CN114193799A - Heat preservation mechanism of fiber composite pipe forming equipment - Google Patents

Abstract

The invention provides a heat preservation mechanism of fiber composite pipe forming equipment, and belongs to the technical field of composite pipe production equipment. It has solved the relatively poor problem of shaping quality of current compound pipe. This heat preservation mechanism of compound tub former of fibre, compound tub former of fibre includes forming die and extruder, forming die includes outer die sleeve and the mandrel of setting in outer die sleeve, form the shaping chamber way between outer die sleeve and the mandrel, the preceding port of outer die sleeve is pegged graft and is had the outer tube, and the one end of outer tube stretches into in the outer die sleeve, form the annular chamber way that can supply the fibre to pass between outer tube and the outer die sleeve, wear to be equipped with the core pipe that communicates with the extruder in the outer tube, this heat preservation mechanism is including cup jointing interior heating jacket and a plurality of external heating jacket of cup jointing on outer die sleeve on the core pipe, a plurality of external heating jackets set up along outer die sleeve axial. This heat preservation mechanism of compound pipe former of fibre has promoted the shaping quality of compound pipe.

Description

Heat preservation mechanism of fiber composite pipe forming equipment

Technical Field

The invention belongs to the technical field of composite pipe production equipment, and relates to a heat preservation mechanism of fiber composite pipe forming equipment.

Background

With the continuous development of the existing technology, people have higher and higher requirements on various composite pipes, and the composite pipes still can be stably used in a complex environment for a long time.

If chinese patent application (grant No. CN 206242461U) discloses a two-layer co-extrusion composite pipe mold, including the axial connector and the radial connector that are connected with the extruder discharge gate, the axial connector discharge gate position is equipped with the spreader cone, be equipped with outer shunt body behind the spreader cone, be equipped with interior runner and spiral outer runner on the outer shunt body, wherein interior runner communicates with each other with the mandrel, the radial connector discharge gate communicates with each other through back die body and mandrel through spiral outer runner, mandrel discharge gate position is equipped with inner wall adjusting device, back die body position is equipped with outer wall adjusting device, the surface of whole mold is equipped with the heating collar.

The structure is that an inner layer pipe extruder is started firstly to form an inner layer pipe blank, then another extruder is started to form an outer layer pipe blank, thereby realizing the manufacture of the double-layer pipe blank, because the material extruded in the extruder needs to ensure high temperature, a heating ring is arranged on the surface of the whole die, but in the whole pipe blank forming process, the temperature required by a core die and a shunting cone is different, and in the process of material flow entering from an axial connector or a radial connector, because the temperature in the die is possibly lower than the temperature of the material in the axial connector or the radial connector, the outflow of the material can be unsmooth, the die is only provided with the heating ring on the outer surface, the temperature in the die can not be accurately controlled, the temperature required at each position of the die is different, and the temperature of the heating ring arranged on the surface of the whole die is the whole temperature of the die to be adjusted, the temperature of a certain position of the die can not be independently adjusted, so that the forming quality of the inner layer pipe blank and the outer layer pipe blank is influenced.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a heat preservation mechanism of fiber composite pipe forming equipment, which aims to solve the technical problems that: how to solve the problem that the forming quality of the existing composite pipe is poor.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a compound tub of former's of fibre heat preservation mechanism, compound tub of former of fibre includes forming die and extruder, forming die includes outer die sleeve and sets up the mandrel in outer die sleeve, form the shaping chamber way between outer die sleeve and the mandrel, its characterized in that, the preceding port of outer die sleeve is pegged graft and is had the outer tube, and the one end of outer tube stretches into in the outer die sleeve, form the annular chamber way that can supply the fibre to pass between outer tube and the outer die sleeve, wear to be equipped with the core pipe that communicates with the extruder in the outer tube, this heat preservation mechanism is including cup jointing the interior heating jacket on the core pipe and a plurality of external heating cover of cup jointing on outer die sleeve, and a plurality of external heating covers set up along outer die sleeve axial.

The working principle is as follows: in the whole production process, the fiber needs to be continuously pulled by a tractor, so that the formed pipeline manufactured by the forming equipment can be continuously pulled out, and the continuous production of the pipeline is realized; the material is extruded by the extruder and is extruded into the outer die sleeve through the core pipe, at the moment, the annular cavity channel between the outer pipe and the outer die sleeve can be penetrated by the fiber, the fiber is prevented from entering the outer die sleeve to deform, the extruded material can be directly fused and molded into the composite pipe through the fiber in the core and the outer die sleeve by the core pipe, the temperature in the core pipe is ensured by sleeving the inner heating sleeve on the core pipe, the material is always in a high-temperature state, the unsmooth flow in the material extrusion process is prevented, the temperature in the whole outer die sleeve is ensured by sleeving the outer heating sleeve on the outer die sleeve, the higher temperature can be kept after the material is extruded, because the required temperature of each part of the outer die sleeve is different in the molding process, the temperature in the outer die sleeve is sectionally controlled by arranging a plurality of outer heating sleeves, and the temperature control of the composite pipe in the molding process is more accurate, further improving the forming quality of the composite pipe.

In the heat insulation mechanism of the fiber composite pipe forming equipment, the number of the core pipes is multiple, one core pipe is partially embedded into the outer mold sleeve, the number of the inner heating sleeves is multiple, and each core pipe is sleeved with the inner heating sleeve.

Because need twine the fibre outside the outer tube, consequently, the length that whole outer tube set up is longer, consequently, the material is in the core pipe transportation, because the longer material that easily causes of core pipe length reduces at the transportation process temperature, the mobility of material is relatively poor, and through adopting the core pipe that a plurality of lengths are shorter, consequently, can satisfy the demand of the required temperature of the core pipe of different positions, and all overlap on every core pipe and be equipped with interior heating jacket, every interior heating jacket can both independent controlled temperature, one of them core pipe part imbeds in the outer die sleeve, the outer heating jacket that makes core pipe overcoat establish interior heating jacket and outer die sleeve overcoat can set up relatively and realize inside and outside heating, make the material can continuously keep constant temperature in the transportation, thereby make the forming process of composite tube more stable, further promotion composite tube's shaping quality.

In the heat insulation mechanism of the fiber composite pipe forming equipment, the end part of one end of the core pipe adjacent to the other core pipe is sleeved with the male bearing sleeve or the female bearing sleeve, the male bearing sleeve on one core pipe is abutted against the female bearing sleeve on the other adjacent core pipe and is fixedly connected through the fastener, and the outer wall of the male bearing sleeve and the outer wall of the female bearing sleeve are both attached to the inner wall of the outer pipe.

Through setting up public bearing housing and female bearing housing for the connection of core pipe is more convenient, and with having certain distance between core pipe and the outer tube, makes the core pipe also not influence the outer winding fibre of outer tube when the heating, and public bearing housing and female bearing housing have also played certain supporting role, have improved the stability of core pipe installation, thereby can further promote the shaping quality of compound pipe.

In foretell compound tub of former's of fibre heat preservation mechanism, but set up the line hole of crossing that the power supply line wore to establish on the outer tube, male bearing housing and female bearing are sheathe in and all have with the through wires hole of crossing the line hole intercommunication, the through wires hole of male bearing housing and female bearing housing intercommunication after male bearing housing is connected with corresponding female bearing housing.

The arrangement of the structure enables the electric wire connected to the inner heating sleeve sleeved on the core pipe to penetrate out of the outer pipe through the threading hole and to be electrically connected with the outside, so that the temperature of the inner heating sleeve on the core pipe is controlled more conveniently, and the convenience of the heat preservation mechanism is improved.

In the heat insulation mechanism of the fiber composite pipe forming equipment, the core pipes and the outer pipe are coaxially arranged.

The distance between core pipe and the outer tube is equal to the distance between core pipe and the outer tube, so that the winding fiber on the outer tube is not influenced when the core pipe is heated, and the heat-insulating stability of the core pipe is improved.

In the heat insulation mechanism of the fiber composite pipe forming device, one of the inner heating sleeve close to the outer heating sleeve is arranged opposite to the outer heating sleeve.

The arrangement of the structure enables materials entering the outer mold sleeve from the core pipe outlet to be insulated, the phenomenon that the materials are not smooth due to insufficient temperature is avoided, and the forming quality of the composite pipe is further improved.

In foretell fiber composite pipe former's heat preservation mechanism, be equipped with the cylindric support section of thick bamboo that the cover was established at the mandrel outside in the shaping chamber way, it is equipped with the punishment in advance on the support section of thick bamboo, the front end of mandrel is connected with the shunt, the support section of thick bamboo links firmly on the shunt, the export of core pipe is just setting up with the shunt.

The material flows from the export of core pipe, and the accessible shunt shunts and leads the material for the material can be even through supporting on the material hole of crossing of a section of thick bamboo flows in the fibre between a section of thick bamboo and the outer die sleeve, fibre and material mix the back and form compound pipe after cooling the design, make the material that the core pipe flows through supporting a section of thick bamboo and fibre mixture through the shunt, further promotion the shaping quality of compound pipe.

In the heat insulation mechanism of the fiber composite pipe forming equipment, a gap is formed between every two adjacent outer heating sleeves.

The setting in clearance for the regulation of temperature can be relatively independent and not influenced between each external heating cover, further promotion heat preservation effect of heat preservation mechanism.

In the heat insulation mechanism of the fiber composite pipe forming equipment, one end of the male bearing sleeve protrudes to form the mounting convex ring, one end of the female bearing sleeve is sunken to form the mounting groove, and the mounting convex ring can be embedded into the corresponding mounting groove.

The male bearing sleeve and the female bearing sleeve can be positioned through the mounting convex ring and the mounting groove during assembly, radial play of the male bearing sleeve and the female bearing sleeve is avoided, and the stability of core pipe connection is further improved.

Compared with the prior art, this compound tub of former's of fibre heat preservation mechanism has the advantage:

1. through having cup jointed the internal heating cover on the core pipe, the temperature in the core pipe has been guaranteed, make the material be in high temperature state all the time, prevent to extrude the in-process at the material and flow not smooth, the external heating cover has been cup jointed on the outer die sleeve, the temperature in whole outer die sleeve has been guaranteed, guaranteed that the material can also keep higher temperature after extruding, because at the fashioned in-process, the required temperature of every part of outer die sleeve is all inequality, consequently, set up the temperature in a plurality of external heating covers come the segment control outer die sleeve, make the temperature control of composite pipe in the forming process more accurate.

2. Because need twine the fibre outside the outer tube, consequently, the length that whole outer tube set up is longer, consequently, the material is in the core pipe transportation, because the longer material that easily causes of core pipe length reduces transporting the in-process temperature, the mobility of material is relatively poor, and through adopting the core pipe that a plurality of lengths are shorter, and all overlap on every core pipe and be equipped with interior heating jacket, every interior heating jacket can both independent controlled temperature, consequently, can satisfy the demand of the required temperature of core pipe in different positions, make the material keep constant temperature in the transportation.

Drawings

FIG. 1 is a partial sectional view of the heat-insulating mechanism of the fiber composite pipe forming apparatus after assembly.

Fig. 2 is a schematic structural diagram of the fiber composite pipe molding equipment after the heat preservation mechanism is assembled.

FIG. 3 is a sectional view of the heat-insulating mechanism of the fiber composite pipe forming apparatus after assembly.

Fig. 4 is an exploded view of the male bearing sleeve and the female bearing sleeve in the heat insulation mechanism of the fiber composite pipe forming device.

In the figure, 1, a forming die; 11. an outer die sleeve; 11a, an external heating sleeve; 11b, a gap; 12. a core mold; 13. forming a cavity; 14. a support cylinder; 14a, a material passing hole; 15. a flow divider; 2. an extruder; 3. an outer tube; 31. a wire passing hole; 4. an annular channel; 5. a core tube; 51. an internal heating jacket; 52. a male bearing housing; 52a, mounting a convex ring; 53. a female bearing housing; 53a, mounting grooves; 54. threading holes; 6. a fastener.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the heat preservation mechanism of the fiber composite pipe forming device comprises a forming die 1 and anextruder 2, wherein the forming die 1 comprises anouter die sleeve 11 and acore die 12 arranged in theouter die sleeve 11, and a formingcavity channel 13 is formed between theouter die sleeve 11 and thecore die 12.

Specifically, as shown in fig. 1 to 4, anouter tube 3 is inserted into a front end of anouter die sleeve 11, one end of theouter tube 3 extends into theouter die sleeve 11, anannular cavity 4 through which fibers can pass is formed between theouter tube 3 and theouter die sleeve 11, acore tube 5 communicated with anextruder 2 is inserted into theouter tube 3, the heat preservation mechanism includes aninner heating sleeve 51 sleeved on thecore tube 5 and a plurality ofouter heating sleeves 11a sleeved on theouter die sleeve 11, and the plurality ofouter heating sleeves 11a are axially arranged along theouter die sleeve 11.

The working principle is as follows: in the whole production process, the fiber needs to be continuously pulled by a tractor, so that the formed pipeline manufactured by the forming equipment can be continuously pulled out, and the continuous production of the pipeline is realized; the material is extruded by theextruder 2 and is extruded into theouter die sleeve 11 through thecore pipe 5, at the moment, theannular cavity 4 between theouter pipe 3 and theouter die sleeve 11 can be penetrated by the fiber, and the fiber is prevented from entering theouter die sleeve 11 to deform, thecore pipe 5 can directly melt and mold the extruded material with the fiber in theouter die sleeve 11 through thecore mold 12 into a composite pipe, the temperature in thecore pipe 5 is ensured by sleeving theinner heating sleeve 51 on thecore pipe 5, so that the material is always in a high-temperature state, the unsmooth flow in the material extrusion process is prevented, theouter heating sleeve 11a is sleeved on theouter die sleeve 11, the temperature in the wholeouter die sleeve 11 is ensured, the material can be kept at a higher temperature after being extruded, because the required temperature of each part of theouter die sleeve 11 is different in the molding process, and a plurality ofouter heating sleeves 11a are arranged to control the temperature in theouter die sleeve 11 in a subsection manner, the temperature control of the composite pipe in the forming process is more accurate, and the forming quality of the composite pipe is further improved.

As shown in fig. 1, a plurality ofcore tubes 5 are provided, onecore tube 5 is partially embedded in theouter jacket 11, a plurality ofinner heating jackets 51 are provided, and eachcore tube 5 is sleeved with aninner heating jacket 51. Because need twine the fibre outsideouter tube 3, consequently, the length that wholeouter tube 3 set up is longer, consequently, the material is incore pipe 5 transportation, because the longer material that easily causes ofcore pipe 5 length reduces at the in-process temperature that transports, the mobility of material is relatively poor, and through adopting thecore pipe 5 that a plurality of lengths are shorter, and all overlap on everycore pipe 5 and be equipped withinterior heating jacket 51, everyinterior heating jacket 51 can both independent controlled temperature, consequently, can satisfy the demand of the required temperature ofcore pipe 5 of different positions, make the material keep constant temperature in the transportation, thereby make the forming process of composite pipe more stable, further promotion composite pipe's shaping quality.

As shown in fig. 1 to 4, the end of one end of thecore tube 5 adjacent to theother core tube 5 is sleeved with a male bearingsleeve 52 or afemale bearing sleeve 53, the male bearingsleeve 52 on onecore pipe 5 is abutted against thefemale bearing sleeve 53 on the otheradjacent core pipe 5 and fixedly connected through the fastener 6, the outer wall of themale bearing sleeve 52 and the outer wall of thefemale bearing sleeve 53 are both attached to the inner wall of theouter pipe 3, theouter pipe 3 is provided with thewire passing hole 31 through which a power supply wire can pass, themale bearing sleeve 52 and thefemale bearing sleeve 53 are both provided withwire passing holes 54 communicated with thewire passing hole 31, thewire passing holes 54 of the male bearingsleeve 52 are communicated with thewire passing holes 54 of thefemale bearing sleeve 53 after the male bearingsleeve 52 is connected with the correspondingfemale bearing sleeve 53, one end of the male bearingsleeve 52 protrudes to form aninstallation convex ring 52a, one end of the female bearingsleeve 53 is sunken to form aninstallation groove 53a, and theinstallation convex ring 52a can be embedded into thecorresponding installation groove 53 a.

As shown in fig. 1 to 3, thecore tubes 5 are arranged coaxially with theouter tube 3, and in this embodiment, there are fourinner heating jackets 51 and threeouter heating jackets 11a, and one of theinner heating jackets 51 adjacent to theouter heating jacket 11a is arranged opposite to theouter heating jacket 11a with agap 11b between each two adjacentouter heating jackets 11 a.

As shown in fig. 1, acylindrical support cylinder 14 sleeved outside thecore mold 12 is arranged in themolding cavity 13,material passing holes 14a are distributed on thesupport cylinder 14, aflow divider 15 is connected to the front end of thecore mold 12, thesupport cylinder 14 is fixedly connected to theflow divider 15, and the outlet of thecore tube 5 is arranged opposite to theflow divider 15.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (9)

1. A heat preservation mechanism of fiber composite pipe forming equipment comprises a forming mold (1) and an extruder (2), wherein the forming mold (1) comprises an outer mold sleeve (11) and a core mold (12) arranged in the outer mold sleeve (11), a forming cavity channel (13) is formed between the outer mold sleeve (11) and the core mold (12), the heat preservation mechanism is characterized in that an outer pipe (3) is inserted into a front port of the outer mold sleeve (11), one end of the outer pipe (3) extends into the outer mold sleeve (11), an annular cavity channel (4) for fibers to pass through is formed between the outer pipe (3) and the outer mold sleeve (11), a core pipe (5) communicated with the extruder (2) is arranged in the outer pipe (3) in a penetrating manner, the heat preservation mechanism comprises an inner heating sleeve (51) sleeved on the core pipe (5) and a plurality of outer heating sleeves (11a) sleeved on the outer mold sleeve (11), a plurality of outer heating jackets (11a) are axially arranged along the outer die sleeve (11).

2. The heat insulation mechanism of the fiber composite pipe forming equipment according to claim 1, wherein a plurality of core pipes (5) are provided, one core pipe (5) is partially embedded into the outer die sleeve (11), a plurality of inner heating sleeves (51) are provided, and each core pipe (5) is sleeved with an inner heating sleeve (51).

3. The heat insulation mechanism of the fiber composite pipe forming equipment according to claim 2, wherein a male bearing sleeve (52) or a female bearing sleeve (53) is sleeved on the end part of one end of the core pipe (5) adjacent to the other core pipe (5), the male bearing sleeve (52) on one core pipe (5) is abutted against the female bearing sleeve (53) on the other adjacent core pipe (5) and fixedly connected through a fastener (6), and the outer wall of the male bearing sleeve (52) and the outer wall of the female bearing sleeve (53) are both attached to the inner wall of the outer pipe (3).

4. The heat insulation mechanism of the fiber composite pipe forming equipment according to claim 3, wherein the outer pipe (3) is provided with a threading hole (31) through which a power supply line can be threaded, the male bearing sleeve (52) and the female bearing sleeve (53) are both provided with threading holes (54) communicated with the threading hole (31), and the threading holes (54) of the male bearing sleeve (52) are communicated with the threading holes (54) of the female bearing sleeve (53) after the male bearing sleeve (52) is connected with the corresponding female bearing sleeve (53).

5. The heat-insulating mechanism of the fiber composite pipe forming equipment according to any one of claims 1 to 4, wherein the core pipes (5) are all arranged coaxially with the outer pipe (3).

6. The insulating mechanism of fiber composite pipe forming equipment according to any one of claims 2 to 4, wherein an inner heating jacket (51) adjacent to the outer heating jacket (11a) is disposed opposite to the outer heating jacket (11 a).

7. The heat insulation mechanism of the fiber composite pipe forming equipment according to any one of claims 1 to 4, wherein a cylindrical support cylinder (14) sleeved outside the core mold (12) is arranged in the forming cavity (13), material passing holes (14a) are formed in the support cylinder (14) in a spread mode, a flow divider (15) is connected to the front end of the core mold (12), the support cylinder (14) is fixedly connected to the flow divider (15), and an outlet of the core pipe (5) is arranged opposite to the flow divider (15).

8. The insulating mechanism of fiber composite pipe forming equipment according to any one of claims 1 to 4, characterized in that a gap (11b) is formed between every two adjacent outer heating jackets (11 a).

9. The heat insulation mechanism of the fiber composite pipe forming device according to claim 3 or 4, wherein one end of the male bearing sleeve (52) protrudes to form a mounting convex ring (52a), one end of the female bearing sleeve (53) is recessed to form a mounting groove (53a), and the mounting convex ring (52a) can be embedded into the corresponding mounting groove (53 a).

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