CN114215814A - Mold changing switch and method for connecting mold changing switch and air cylinder - Google Patents

Abstract

The invention provides a mould changing switch and a method for connecting the mould changing switch with a cylinder, comprising a valve body, wherein the valve body comprises a switch base and a switch gland, a cylindrical accommodating part is formed in the valve body, a valve core is rotatably and hermetically arranged in the accommodating part, case and the coaxial line setting of portion of holding, switch base's center department is provided with the air supply hole with the coaxial line of portion of holding, be equipped with at least two sets of gas vent group with first holding tank intercommunication on switch base's the perisporium, gas vent group includes two air vents, the interval setting of equal arc length between the adjacent air vent, the bottom that the case is close to first holding tank is formed with protruding portion and corresponding depressed part, the depressed part is with air supply hole and two above half quantity adjacent air vent intercommunication down, the protruding portion covers surplus air vent, be formed with the exhaust passage that corresponding quantity extends to the top opening part along the case surface on the protruding portion. The invention can meet the requirement that a plurality of groups of cylinders connected with the mold changing switch various different combination states.

Description

Mold changing switch and method for connecting mold changing switch and air cylinder

Technical Field

The invention relates to the technical field of pneumatic control, in particular to a mold changing switch and a method for connecting the mold changing switch with an air cylinder.

Background

At present, the metal plate mold industry uses a cylinder to drive a mold to change the mold so as to realize that one set of mold can produce products with various models.

The invention discloses a four-position seven-way reversing valve which comprises a lower valve body, wherein a middle valve body is fixed on the upper surface of the lower valve body in a sealing mode, a reversing valve core and a compression spring are arranged in the middle valve body, the upper end of the compression spring abuts against the top of the inner wall of the middle valve body, the lower end of the compression spring abuts against the upper surface of the reversing valve core, the lower surface of the reversing valve core is pressed against the upper surface of the lower valve body, an upper valve body is rotatably installed on the upper surface of the middle valve body, a rotating shaft is fixed on the upper valve body, a rotating shaft installation hole is formed in the middle valve body, the rotating shaft is rotatably and hermetically installed in the rotating shaft installation hole, and the lower end of the rotating shaft is fixed with the reversing valve core. The lower surface of the reversing valve core is provided with a first air groove, a second air groove, a third air groove and a fourth air groove which are arc-shaped and independent respectively, the arc where the first air groove is located, the arc where the second air groove is located, the arc where the third air groove is located and the arc where the fourth air groove is located are concentric arcs, the radius of the arc where the first air groove is located is equal to that of the arc where the second air groove is located, the radius of the arc where the third air groove is located is smaller than that of the arc where the fourth air groove is located, and the radius of the arc where the third air groove is located is larger than that of the arc where the second air groove is located.

Although the existing reversing valve can realize the continuous motion of simultaneous control of multiple air paths of an automatic production line, the structure is complex, more than two groups of cylinders cannot be controlled to reach more than four different states, and the existing reversing valve cannot be used for controlling the cylinders to change types quickly in the production process of molds.

Disclosure of Invention

In order to solve the above problems, a first object of the present invention is to provide a mold changing switch with a simple structure, which can control two or more sets of cylinders to reach four or more different operating states.

The second purpose of the invention is to provide a method for connecting the mold changing switch with the air cylinder.

In order to achieve the first purpose, the mold changing switch provided by the invention comprises a valve body, wherein an accommodating part is formed in the valve body, the valve body comprises a switch base and a switch gland, the switch gland is sealed and covered on the top of the switch base, the top of the switch gland is opened and communicated with the accommodating part, a valve core is rotatably and hermetically arranged in the accommodating part, and the valve core and the accommodating part are coaxially arranged;

the accommodating part comprises a cylindrical first accommodating groove and a cylindrical second accommodating groove, the first accommodating groove is arranged in the switch base, the second accommodating groove is arranged in the switch gland, the center of the bottom of the switch base is provided with an air source hole, the air source hole is communicated with the first accommodating groove and is coaxially arranged with the first accommodating groove, at least two groups of air hole groups are arranged on the peripheral wall of the switch base in a penetrating manner, each group of air hole groups comprises two air holes, each air hole is communicated with the first accommodating groove, and the two adjacent air holes are arranged at intervals with equal arc lengths;

the bottom of the valve core close to the first accommodating groove is provided with a protruding portion and a corresponding recessed portion, the recessed portion enables the air source holes to be communicated with any two or more air holes which are below half of the number of the air holes and adjacent to the air holes, the protruding portion covers the rest of the adjacent air holes, the surface of one side of the valve core, where the protruding portion is formed, is provided with air exhaust passages with the number corresponding to the rest of the air holes covered by the protruding portion at intervals of equal arc length, each air exhaust passage corresponds to one air hole, and each air exhaust passage extends to an opening at the top of the switch gland along the surface of the valve core and is communicated with the outside.

Therefore, the air source enters the concave part at the switch valve core through the air source hole at the bottom, the air in the concave part enters one end of the air cylinder through the vent hole connected with the concave part, and the air at the other end of the air cylinder is discharged along the exhaust passage through the vent hole connected with the protruding part at the switch valve core, so that the motion state of the air cylinder is changed, and the operation of driving the mold to change the mold by the air cylinder is realized.

The valve core is cylindrical, and the area of the top opening surface of the switch gland is smaller than that of the top opening surface of the accommodating part.

The valve core comprises a first core body and a second core body, the first core body is fixedly connected with the second core body, the second core body is cylindrical, the second core body is rotatably and hermetically mounted in a second accommodating groove, the first core body is mounted in a first accommodating groove, one end, far away from the bottom of the first accommodating groove, of the first core body corresponds to the shape of the top opening of the first accommodating groove, and the area of the top opening surface of the first accommodating groove is larger than that of the bottom opening surface of the second accommodating groove.

The further proposal is that the valve core is integrally formed.

Therefore, the valve core in the containing part is fixed and limited through the arrangement of the switch gland structure, and the integrally formed valve core is convenient to produce, install and operate.

The further proposal is that one end of the valve core close to the opening at the top of the switch gland is fixedly connected with a handle.

The handle is provided with a first positioning piece, the switch gland is provided with a plurality of second positioning pieces with equal arc length, the first positioning piece and the second positioning pieces are matched for positioning, and the second positioning pieces at different positions enable the concave parts to be communicated with more than two air holes with less than half of the number of the air holes at different positions and adjacent air holes.

The first positioning piece is a spring bolt, one end of the spring bolt, which is close to the switch gland, is hemispherical, and the second positioning piece is a gear recess corresponding to the size of the spring bolt.

The further proposal is that air pipe joints are fixedly arranged in the air source hole and the air vent.

Therefore, through the arrangement of the handle and the matching of the positioning piece between the handle and the switch pressing cover, an operator can more conveniently switch different states of the cylinder group, the state of the switch can be conveniently observed, and the risk of the related operator that the operation is not in place is reduced. The air pipe is conveniently butted by arranging the air pipe joint.

In order to achieve the second object, the present invention provides a method for connecting the mold-changing switch to the cylinder, the method comprising communicating half of the number of the vent holes with the intake ports of the two or more cylinder groups through the air pipes, and communicating the remaining vent holes with the exhaust ports of the two or more cylinder groups through the air pipes, the number of the cylinder groups corresponding to the number of the vent groups, and two of the vent holes communicating with the intake port and the exhaust port of each cylinder, respectively, being arranged in line with each other.

Further, each cylinder group may include more than one cylinder.

Therefore, by adopting the method, when the air inlet and the air outlet of the air cylinder are arranged in a collinear way, more than four working states can be switched by more than two groups of air cylinders, so that the mould changing operation of various moulds can be carried out.

In conclusion, the mold changing switch is simple in structure, and the operation of changing the mold by driving a plurality of groups of molds through the air cylinder can be realized by connecting the corresponding switch and the air cylinder, so that the requirement of simultaneously switching the plurality of groups of molds in the production process is met.

Drawings

FIG. 1 is a perspective view of the mold change switch of the present invention.

Fig. 2 is an exploded view of the die change switch of the present invention.

Fig. 3 is a top view of the die change switch of the present invention.

Fig. 4 is a sectional view taken in the direction of a-a in fig. 3.

Fig. 5 is a perspective view of a valve core of a first embodiment of the mold change-over switch of the present invention.

Fig. 6 is a bottom view of the valve core of the first embodiment of the mold change-over switch of the present invention.

Fig. 7 is a cross-sectional view of a second embodiment of the die-change switch of the present invention.

Fig. 8 is a schematic view of the bottom structures of the valve body and the valve core of the third embodiment of the mold changing switch of the invention.

Fig. 9 is a schematic view of the bottom structures of the valve body and the valve core of the fourth embodiment of the mold changing switch of the invention.

Fig. 10 is a schematic view of the bottom structures of the valve body and the valve core of the fifth embodiment of the mold changing switch of the invention.

Fig. 11 is a schematic view of the connection of the first or second embodiment of the mold changing switch of the present invention to the air cylinder.

Fig. 12(a), 12(b), 12(c), and 12(d) are schematic views of the valve body in fig. 11 in four shift positions, respectively.

Detailed Description

Mold change-over switch first embodiment:

referring to fig. 1 to 6, the mold changing switch 1 includes avalve body 3 made of stainless steel, thevalve body 3 is entirely in a tetrahedron shape, preferably a regular tetrahedron shape, thevalve body 3 is formed with a containingportion 5, a valve core 6 is rotatably arranged in the containingportion 5 in a sealing manner, and ahandle 2 is arranged on the mold changing switch 1 to facilitate the switching and gear shifting operations. Valvebody 3 includesswitch gland 31 andswitch base 32, the portion ofholding 5 includes cylindricfirst holding tank 52 and cylindricsecond holding tank 51,first holding tank 52 sets up inswitch base 32,second holding tank 51 sets up inswitch gland 31,air supply hole 324 has been seted up to the bottom center department ofswitch base 32,air supply hole 324 and the setting of the 5 coaxial lines of portion of holding, fourair vents 321 are worn to be equipped with in the interval of the isoperiboly length on the perisporium ofswitch base 32, everyair vent 321 is 90 degrees to the radial contained angle in the axle center promptly, everyair vent 321 all communicates withfirst holding tank 52. The twopositioning holes 312 and the two threadedholes 313 penetrate through theswitch gland 31 and are arranged in theswitch base 32, and thepositioning columns 311 are fixed in the twopositioning holes 312 and are used for positioning before theswitch gland 31 and theswitch base 32 are fastened, so that the production operation is convenient. Theswitch cover 31 and theswitch base 32 are fixedly connected bybolts 323. Alternatively, the connection may be performed by using an existing fixing connection manner such as welding, which is not described herein again.

Referring to fig. 2 and 4 in combination with fig. 5 and 6, the valve element 6 is formed with a step portion dividing the valve element 6 into a lowerfirst core 42 and an uppersecond core 41 of different sizes, thesecond core 41 is cylindrically mounted in the second receivinggroove 51, thefirst core 41 is mounted in the first receivinggroove 52, and one end of thefirst core 42 close to the second receivinggroove 51 is cylindrically fitted to the top opening of the first receivinggroove 52. The area of the cylindrical top surface of thefirst core 42 is larger than the area of the bottom surface of thesecond core 41. The surface area of the opening of the second receivinggroove 51 in theswitch cover 31 is smaller than the surface area of the opening of the top of thefirst receiving groove 52 in theswitch base 32.

One end of thefirst core 41 close to theswitch base 32 is formed with aprotruding portion 421 and a correspondingrecessed portion 422, therecessed portion 422 is connected to theair source hole 324 at the bottom, therecessed portion 422 can communicate theair source hole 324 with twoadjacent vent holes 321 at any position, the remaining twovent holes 321 are covered by the protrudingportion 421, one side of the valve core 6 where the protrudingportion 421 is formed is further provided with twoair vents 43, theair vents 43 extend to the opening at the top of theswitch gland 31 along the surfaces of thefirst core 42 and thesecond core 41, and the coveredvent holes 321 are communicated with the outside through theair vents 43, so that air in the air cylinder 6 can be exhausted, and the working state of the air cylinder 6 can be switched. Theair source hole 324 and thevent hole 321 are provided withair pipe joints 322, which are convenient for directly and tightly connecting air pipes.

Referring to fig. 1 to 4, thehandle 2 fixedly connects thevalve core 4 and thehandle 2 through afastening bolt 22 and abolt hole 23 penetrating thehandle 2 to the valve core 6, the top end of thesecond valve core 41 is higher than the top end of theswitch gland 31, theswitch gland 31 is provided with fourgear recesses 311, the handle is further provided with aspring bolt 21, one end of thespring bolt 21 close to theswitch gland 41 is hemispherical, and the shape of thegear recess 311 corresponds to the shape of the hemispherical end of thespring bolt 21. Thedifferent shift recesses 311 enable therecess 422 to communicate with any twoadjacent vent holes 321 at different positions.

Second embodiment of the mold changeover switch:

referring to fig. 7, the present embodiment is different from the first embodiment in that theaccommodating portion 5 is cylindrical, that is, the first receivinggroove 52 and the second receivinggroove 51 have the same horizontal cross-sectional area, thevalve body 4 is cylindrical and the top surface of thevalve body 4 has an area larger than the top opening surface of theswitch cover 31, and the shape of thevalve body 4 corresponds to the shape of theaccommodating portion 5. The end of thehandle 2 close to thevalve core 4 is cylindrical, the size of the cylindrical end of thehandle 2 corresponds to the size of the top opening of theswitch gland 31 and is inserted into the top opening of theswitch gland 31 to be fixedly connected with thevalve core 4, and theexhaust passage 43 extends to the cylindrical end of thehandle 2 along one side surface of thevalve core 4 where theprotruding part 421 is formed and is communicated with the outside.

Third embodiment of the mold remodel switch:

referring to fig. 8, the present embodiment is different from the first and second embodiments in that thevalve body 3 has a cylindrical shape.

Fourth embodiment of the mold remodel switch:

referring to fig. 9, the difference between this embodiment and the previous three embodiments is that thevalve body 3 is a regular hexahedron, sixvent holes 321 are formed in the peripheral wall of theswitch base 32 of thevalve body 3 in an equal arc length, therecess 422 of thevalve core 4 communicates theair source hole 323 with the adjacent threevent holes 321, the protrudingportion 421 covers the remaining threevent holes 321, threeair discharge ducts 43 are formed on the surface of thevalve core 4 on the side where theprotruding portion 421 is formed, and six gear recesses (not shown in the figure) are formed on theswitch gland 31, and the switch of this embodiment can control three groups of cylinders to achieve working states of six different combinations.

Fifth embodiment of the mold remodel switch:

referring to fig. 10, the present embodiment is different from the fourth embodiment in that arecess 422 of avalve core 4 connects agas source hole 323 with twoadjacent vent holes 321, aprotrusion 421 covers the remaining fourvent holes 321, fourgas discharge passages 43 are provided on a surface of thevalve core 4 on which theprotrusion 421 is formed, and six shift recesses (not shown) are provided on aswitch cover 31, and the switch of the present embodiment can control three groups of cylinders to six combined operating states different from the fourth embodiment.

The invention also provides a method for connecting the mold changing switch and the air cylinder in the first embodiment or the second embodiment, which comprises the following steps:

referring to fig. 11 and 12, thefirst vent hole 3221 communicates with an intake port of thesecond cylinder 62, thesecond vent hole 3222 communicates with an intake port of thefirst cylinder 61, thethird vent hole 3223 communicates with an exhaust port of thesecond cylinder 62, thefourth vent hole 3224 communicates with an exhaust port of thefirst cylinder 61, thefirst vent hole 3221 and thethird vent hole 3223 are arranged in line, and thesecond vent hole 3222 and thefourth vent hole 3224 are arranged in line. When the valve core 4 is correspondingly in the first state, as shown in fig. 12(a), the recess 422 connects the second vent hole 3222 and the third vent hole 3223 with the air source hole 323, at this time, the first cylinder 61 is in the extended state, and the second cylinder 62 is in the contracted state; when the valve core 4 is in the second state, as shown in fig. 12(b), the recess 422 connects the third vent hole 3223 and the fourth vent hole 3224 with the air source hole 323, and at this time, the first cylinder 61 and the second cylinder 62 are both in the contracted state; when the valve core 4 is correspondingly in the third state, as shown in fig. 12(c), the concave portion 422 connects the fourth vent hole 3224 and the first vent hole 3221 with the air source hole 323, at this time, the first cylinder 61 is in the contracted state, and the second cylinder 62 is in the extended state; when the valve element 4 is in the fourth state, as shown in fig. 12(d), the recess 422 connects the first and second vent holes 3221 and 3222 to the air source hole 323, and both the first and second cylinders 61 and 62 are in the extended state.

Referring to fig. 11, the fourth embodiment may be connected to three groups of cylinders 6, each group of cylinders 6 includes more than one cylinder 6, and twoair vents 321 communicating with the intake port and the exhaust port of each cylinder 6 are arranged in line with each other, in this case, the three groups of cylinders of the fifth embodiment include: the device comprises six different working states of extending-extending, extending-contracting, extending-contracting, contracting-extending, contracting-extending and contracting-contracting.

And the three groups of cylinders 6 of the fifth embodiment comprise: the method comprises the following steps of extending, keeping the existing state unchanged, contracting, keeping the existing state unchanged, extending, contracting, keeping the existing state unchanged, contracting, extending, keeping the existing state unchanged, contracting and keeping the existing state unchanged, extending and extending.

In conclusion, the invention designs the corresponding structures of the vent hole, the exhaust hole, the air source hole and the valve core of the mold changing switch, not only has simple structure, but also can realize the operation of changing the mold by driving a plurality of groups of molds through the air cylinder by the method of connecting the corresponding switch and the air cylinder so as to meet the requirement of simultaneously switching a plurality of groups of molds in the production process.

It should be noted that the above is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept also fall within the protection scope of the present invention.

Claims (10)

1. A mold remodel switch comprising: the valve comprises a valve body, wherein an accommodating part is formed in the valve body, the valve body comprises a switch base and a switch gland, the switch gland is sealed and covered on the top of the switch base, the top of the switch gland is open and is communicated with the accommodating part, a valve core is rotatably and hermetically arranged in the accommodating part, and the valve core and the accommodating part are coaxially arranged;

the method is characterized in that:

the accommodating part comprises a cylindrical first accommodating groove and a cylindrical second accommodating groove, the first accommodating groove is arranged in the switch base, the second accommodating groove is arranged in the switch gland, the center of the bottom of the switch base is provided with an air source hole, the air source hole is communicated with the first accommodating groove and is coaxially arranged with the first accommodating groove, at least two groups of air hole groups are arranged on the peripheral wall of the switch base in a penetrating manner, each group of air hole groups comprises two air holes, each air hole is communicated with the first accommodating groove, and the two adjacent air holes are arranged at equal arc-length intervals;

the bottom of the valve core close to the first accommodating groove is provided with a protruding portion and a corresponding recessed portion, the recessed portion enables the air source holes to be communicated with more than two arbitrary vent holes which are less than half of the number of the vent holes and adjacent to the vent holes, the protruding portion covers the rest of the adjacent vent holes, exhaust passages which correspond to the vent holes covered by the protruding portion in number are arranged on the surface of one side of the valve core at intervals of equal arc length, each exhaust passage corresponds to one vent hole, and each exhaust passage extends to an opening at the top of the switch gland along the surface of the valve core and is communicated with the outside.

2. The mold change-over switch of claim 1, wherein:

the valve core is cylindrical, and the area of the top opening surface of the switch gland is smaller than that of the top opening surface of the accommodating part.

3. The mold change-over switch of claim 1, wherein:

the valve core comprises a first core body and a second core body, the first core body is fixedly connected with the second core body, the second core body is cylindrical, the second core body is rotatably and hermetically installed in the second accommodating groove, the first core body is installed in the first accommodating groove, one end, far away from the bottom of the first accommodating groove, of the first core body corresponds to the shape of the top opening of the first accommodating groove, and the area of the top opening surface of the first accommodating groove is larger than that of the bottom opening surface of the second accommodating groove.

4. The mold change-over switch according to any one of claims 1 to 3, wherein:

the valve core is integrally formed.

5. The mold change-over switch according to any one of claims 1 to 3, wherein:

and one end of the valve core close to the opening at the top of the switch gland is fixedly connected with a handle.

6. The mold change-over switch of claim 5, wherein;

the handle is provided with a first positioning piece, the switch gland is provided with a plurality of second positioning pieces with equal arc length, the first positioning piece and the second positioning piece are mutually matched and positioned, and the second positioning piece at each different position enables the concave part to be communicated with more than two, less than half of the vent holes and adjacent to the vent holes.

7. The mold change-over switch of claim 6, wherein:

the first positioning piece is a spring bolt, one end of the spring bolt close to the switch gland is hemispherical, and the second positioning piece is a gear recess corresponding to the size of the spring bolt.

8. The mold change-over switch according to any one of claims 1 to 3, wherein:

and air pipe joints are fixedly arranged in the air source hole and the air vent.

9. A method of connecting a mold changing switch to a cylinder, which is applied to the mold changing switch according to any one of claims 1 to 8, the method comprising:

half of the number of the vent holes are communicated with the air inlets of more than two cylinder groups through air pipes, the rest of the vent holes are communicated with the exhaust ports of more than two cylinder groups through the air pipes, the number of the cylinder groups corresponds to the number of the air hole groups, and the two vent holes communicated with the air inlets and the exhaust ports of each cylinder are arranged in a same line with each other.

10. The method of claim 9, wherein the method further comprises the step of connecting a mold-changing switch to a gas cylinder:

each of the cylinder groups includes more than one cylinder.

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