Shearing device for cold header with adjustable shearing positionTechnical Field
The utility model relates to the technical field of cold heading machines, in particular to a shearing device for a cold heading machine with an adjustable shearing position.
Background
The cold header is an important stamping machine in mechanical manufacturing, is specially used for utilizing metal plastic forming at normal temperature to produce fasteners such as nuts, bolts and the like in batches, and is characterized in that power is transmitted through a belt wheel and a gear, linear motion is realized through a crank connecting rod and a sliding block mechanism, and a blank of a machined part is subjected to plastic deformation or separation by utilizing a male die and a female die, so that the workpiece is formed into a required shape;
The prior art is mainly characterized in that all components of the cold header are in transmission connection through a transmission mechanism, so that when a transmission mechanism is driven by a driving mechanism and a transmission mechanism to convey steel wires into equipment, the conveying process of the steel wires is consistent, the length of the steel wires cut off once is consistent, when the single conveying length of the steel wires is required to be adjusted, the positions of connecting rods between a driving crank and a driven crank are required to be adjusted, the push-pull distance of the driving crank to the connecting rods is adjusted, but the prior adjusting mode is mainly used for directly disassembling a rotating shaft connected with the connecting rods and the driving crank and adjusting the rotating shaft to bearings at other positions on the driving crank, so that the whole adjusting process is complicated, meanwhile, the improvement of adjusting precision cannot be realized, in addition, the position of one end of the connecting rod on the driving crank is adjusted in a part of adopting a mode of adjusting the sliding block and the screw rod, but the mode is easy to cause the screw rod to rotate due to vibration and the like when the equipment is operated, the conveying length of the steel wires is easy to change when the equipment is operated, and therefore products are not in accordance with processing requirements.
Disclosure of utility model
The utility model aims to provide a shearing device for a cold header with an adjustable shearing position, which solves the problem that the conveying and shearing length of cold header steel wires cannot be conveniently adjusted in the related art.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The utility model provides a shearing mechanism for adjustable cold heading machine of shearing position, includes the frame, movable mounting has the cold heading mould in the frame, frame one side fixed mounting has conveying mechanism, conveying mechanism's input movable mounting has first crank, frame opposite side movable mounting has the bent axle, is located frame movable mounting has the second crank on bent axle one side, the spout has been seted up in the second crank, movable mounting has accommodate the lead screw and slider in the spout respectively, just swing joint has the connecting rod between second crank and the first crank, accommodate the lead screw bottom fixed mounting has the second fixed axle, second fixed axle bottom fixed mounting has the hexagonal seat, second crank bottom is provided with adjustment mechanism, adjustment mechanism includes fixed ring gear and movable ring gear, fixed ring gear fixed mounting is in second crank bottom, movable ring gear bottom fixed mounting has the spacer sleeve and movable mounting is in the hexagonal seat outside.
Optionally, a cam is fixedly arranged on a crankshaft positioned outside the frame;
Based on this, the second crank is driven to reciprocate by the rotation of the crank drive cam.
Optionally, the second crank shaft is connected to one side of the frame, the bottom of the second crank is provided with a mounting groove, and one side of the top of the second crank is contacted with the cam.
Optionally, the sliding block is slidably installed in the sliding groove and is in threaded connection with the adjusting screw rod, a first fixed shaft is fixedly installed on one side of the sliding block, one end of the connecting rod is axially connected to the first fixed shaft, and the other end of the connecting rod is axially connected to one side of the first crank;
Based on the above, the reciprocating motion of the first crank can be realized through the matching of the second crank capable of reciprocating and the connecting rod, so that the conveying mechanism is controlled to convey the steel wire in a fixed length.
Optionally, a plurality of counter bores are formed in the fixed toothed ring, and the fixed toothed ring is fixedly installed in the installation groove through screws penetrating through the counter bores.
Optionally, a third fixed shaft is fixedly arranged at the bottom of the hexagonal seat, and a clamp spring is clamped at the outer side of the third fixed shaft.
Optionally, the transverse section of the limiting sleeve is regular hexagon, a plurality of connecting plates are fixedly connected between the movable toothed ring and the limiting sleeve, and the limiting sleeve is installed on the outer side of the hexagonal seat in a penetrating manner;
Based on this, carry out the joint each other with movable ring gear and fixed ring gear, can restrict the axial motion of movable ring gear through fixed ring gear to the axial motion of adjusting screw has been restricted through the cooperation of movable ring gear with connecting plate, stop collar, and vibrations that produce when preventing equipment operation lead to adjusting screw sustainable deflection, thereby influence the mounted position of slider, lead to the first crank of connecting rod drive to reciprocate the swing progress and appear changing.
Optionally, a compression spring is arranged on a third fixed shaft sleeve between the clamp spring and the limiting sleeve;
Based on this, through jump ring and compression spring's setting, can exert a force to fixed ring gear direction to stop collar and movable ring gear.
The working principle and the beneficial effects of the utility model are as follows:
1. According to the utility model, the adjusting screw rod and the sliding block are movably arranged in the second crank, so that the mounting height of one end of the connecting rod can be adjusted through the adjusting screw rod and the sliding block, the reciprocating swing amplitude of the first crank is further controlled, the length of the steel wire which is singly conveyed by the conveying mechanism can be adjusted, and the adjustment of the shearing position of the steel wire is realized.
2. According to the utility model, the bottom of the second crank is provided with the adjusting mechanism, the adjusting mechanism consists of the fixed toothed ring, the movable toothed ring and other parts, and the micro and continuous deflection of the adjusting screw rod caused by equipment vibration can be prevented through the mutual clamping of the fixed toothed ring and the movable toothed ring, so that the change of the push-pull amplitude of the connecting rod to the second crank caused by the displacement of the sliding block is prevented.
Drawings
The above features, technical features, advantages and implementation of the present utility model will be further described in the following description of preferred embodiments with reference to the accompanying drawings in a clear and easily understood manner.
FIG. 1 is a schematic diagram of the main structure of the present utility model;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic diagram of a second crank construction of the present utility model;
FIG. 4 is a schematic view of the structure of the movable ring gear and the limiting sleeve according to the present utility model;
Fig. 5 is a schematic diagram of a disassembly structure of an adjusting mechanism of the present utility model.
The device comprises a machine frame 1, a cold heading die 2, a conveying mechanism 4, a first crank, a crank shaft 5, a 6, a cam, a 7, a second crank, an 8, an adjusting screw rod 9, a sliding block 10, a connecting rod 11, an adjusting mechanism 12, a fixed toothed ring 13, a movable toothed ring 14, a limiting sleeve 15, a sliding chute 16, a first fixed shaft 17, an installation groove 18, a counter bore 19, a second fixed shaft 20, a hexagonal seat 21, a third fixed shaft 22, a clamping spring 23, a connecting plate 24 and a compression spring.
Detailed Description
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For simplicity of the drawing, only the parts relevant to the utility model are schematically shown in each drawing, and they do not represent the actual structure thereof as a product. In addition, in order to simplify the drawings and facilitate understanding, components having the same structure or function in some drawings are only schematically illustrated in one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one", and "a number" includes "two" and "two or more".
In this context, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or communicate between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Example 1:
As shown in fig. 1 to 5, in a first embodiment of the present utility model, a shearing device for a cold header with an adjustable shearing position is provided, which includes a frame 1, a cold header die 2 is movably installed in the frame 1, a conveying mechanism 3 is fixedly installed at one side of the frame 1, a first crank 4 is movably installed at an input end of the conveying mechanism 3, a crankshaft 5 is movably installed at the other side of the frame 1, a second crank 7 is movably installed at the frame 1 at one side of the crankshaft 5, a sliding groove 15 is formed in the second crank 7, an adjusting screw 8 and a sliding block 9 are movably installed in the sliding groove 15, a connecting rod 10 is movably connected between the second crank 7 and the first crank 4, a second fixed shaft 19 is fixedly installed at the bottom of the adjusting screw 8, a hexagonal seat 20 is fixedly installed at the bottom of the second fixed shaft 19, an adjusting mechanism 11 is provided at the bottom of the second crank 7, the adjusting mechanism 11 includes a fixed toothed ring 12 and a movable toothed ring 13, the fixed toothed ring 12 is fixedly installed at the bottom of the second crank 7, a limit sleeve 14 is fixedly installed at the bottom of the movable toothed ring 13, and movably installed at the outside of the hexagonal seat 20.
The crankshaft 5 outside the frame 1 is fixedly provided with a cam 6, based on the cam 6 is driven to rotate by the crankshaft 5, the second crank 7 can be driven to reciprocate, the second crank 7 is connected to one side of the frame 1 in a shaft mode, an installation groove 17 is formed in the bottom of the second crank 7, one side of the top of the second crank 7 is in contact with the cam 6, the sliding block 9 is slidably arranged in the sliding groove 15 and is in threaded connection with the adjusting screw rod 8, one side of the sliding block 9 is fixedly provided with a first fixed shaft 16, one end of the connecting rod 10 is connected to the first fixed shaft 16 in a shaft mode, the other end of the connecting rod 10 is connected to one side of the first crank 4 in a shaft mode, based on the first fixed shaft 16, the second crank 7 capable of reciprocating can realize reciprocating motion of the first crank 4 through matching and the connecting rod 10, and accordingly the conveying mechanism 3 is controlled to convey steel wires in a fixed length mode.
Example 2:
Referring to fig. 3-5, in a second embodiment of the present utility model, unlike the first embodiment, a plurality of counter bores 18 are formed in the fixed toothed ring 12, the fixed toothed ring 12 is fixedly installed in the installation groove 17 through screws penetrating through the counter bores 18, a third fixed shaft 21 is fixedly installed at the bottom of the hexagonal seat 20, a clamping spring 22 is clamped at the outer side of the third fixed shaft 21, the transverse section of the limiting sleeve 14 is regular hexagon, a plurality of connecting plates 23 are fixedly connected between the movable toothed ring 13 and the limiting sleeve 14, the limiting sleeve 14 is installed at the outer side of the hexagonal seat 20 in a penetrating manner, based on the fact that the movable toothed ring 13 and the fixed toothed ring 12 are clamped with each other, the axial movement of the movable toothed ring 13 can be limited through the fixed toothed ring 12, so that the axial movement of the adjusting screw 8 is limited through the cooperation of the movable toothed ring 13, the connecting plates 23 and the limiting sleeve 14, the continuous deflection of the adjusting screw 8 caused by vibration generated during operation of equipment is prevented, the installation position of the sliding block 9 is influenced, the reciprocating progress of the connecting rod 10 driving the first crank 4 is changed, the third connecting plate 21 between the clamping spring 22 and the limiting sleeve 14 is fixedly connected with the limiting sleeve 14, and the limiting sleeve 24 is compressed to the fixed toothed ring 14 through the compressing spring 24, and the limiting sleeve 14 is arranged on the fixed toothed ring and the fixed toothed ring 12.
It should be noted that, the shearing device for the cold heading machine with adjustable shearing position is provided by the utility model, when the length of a steel wire to be conveyed by the conveying mechanism 3 for a single time needs to be adjusted, adjusting tools such as a spanner can be inserted between three connecting plates 23, and the spanner is manually pressed down, so that the spanner presses down the limiting sleeve 14, meanwhile, the limiting sleeve 14 compresses the compression spring 24 onto the snap spring 22, so that the limiting sleeve 14 cooperates with the three connecting plates 23 to drive the movable toothed ring 13 to move down, the top of the movable toothed ring 13 is separated from the bottom of the fixed toothed ring 12, then, the three connecting plates 23 can be rotated by the spanner, and then, the three connecting plates 23 cooperate with the hexagonal base 20 to drive the second fixed shaft 19 to rotate with the adjusting screw rod 8, so that two ends of the adjusting screw rod 8 respectively rotate in bearings in the second crank 7, and the adjusting screw rod 8 also rotates in a screw hole in the sliding block 9, and then, the sliding block 9 moves up or moves down in the sliding groove 15 through forward and backward rotation of the adjusting screw rod 8, thereby adjusting the height of one end of the first fixed shaft 16, the movable toothed ring 13 can be separated from the bottom of the fixed toothed ring 12, then, the three connecting plates 23 can rotate by the spanner, and the three connecting plates 23 can cooperate with the hexagonal base 20 to drive the second fixed shaft 19 to rotate with the second fixed shaft 8, and the second fixed shaft 8, thereby change the length, and the steel wire can be machined, and the required to be cut, and the steel wire can be machined, and the required, and the length of the steel wire can be cut, and the required, can be cut, and the steel or the steel wire, and the required, can be cut, and the required, and can be cut.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.