CN219522985U - Cold-pushing plate die - Google Patents
Cold-pushing plate die Download PDFInfo
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- CN219522985U CN219522985U CN202320799273.1U CN202320799273U CN219522985U CN 219522985 U CN219522985 U CN 219522985U CN 202320799273 U CN202320799273 U CN 202320799273U CN 219522985 U CN219522985 U CN 219522985U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to the technical field of molding equipment of plastic high polymer materials, in particular to a cold-extrusion plate mold, wherein a plurality of heat exchange channels are horizontally and uniformly distributed on an upper template and a lower template, a plurality of temperature measuring probe holes which extend towards the heat exchange channels vertically and are not communicated with the heat exchange channels are arranged on the outer surfaces of the upper template and the lower template, which deviate from a plate mold cavity, in a matrix manner, and each temperature measuring probe hole is detachably connected with a temperature sensor. According to the utility model, the temperature measuring point position is optimized from the side surface to the front surface of the template, the accurate measurement of the temperature change of the plasticizing material in the middle of the die cavity is realized, the accurate cooling regulation and control of the pumping equipment of the heat exchange medium to the die is ensured, the homogeneity and the product quality of the formed plate are ensured, and the die has the advantages of simple structure, high reliability and low cost, and is convenient to assemble and use, and the production cost of the product is reduced.
Description
Technical Field
The utility model relates to the technical field of molding equipment of plastic high polymer materials, in particular to a cold-extrusion plate mold.
Background
The plastic polymer material is widely used in various fields in production and living, and the molding processing method mainly comprises injection molding, extrusion molding, compression molding, blow molding, calendaring, foaming and the like, wherein the extrusion molding has high efficiency and good continuity, is suitable for large-scale continuous production and manufacture, is beneficial to reducing the molding cost of the plastic polymer material, and is particularly widely applied. The cold-pushing plate die is key material shaping equipment used in an extrusion molding process, is connected to the discharge end of the screw extruder and is used for cooling and shaping plasticizing materials which are continuously melted and extruded by the screw extruder, the structure is simple, the cost is low, the rapid cooling of the plasticizing materials in a die cavity is realized in a heat exchange mode, the molding efficiency is high, the shaping effect is good, and the cold-pushing plate die is suitable for extrusion molding of various plastic polymer materials such as PP, PA, PE, PVC and the like.
The cold extrusion plate die is provided with a heat exchange channel system capable of circulating heat exchange media, real-time temperature monitoring is carried out through a plurality of temperature sensors distributed on the side edges of the die plate, and the pumping equipment of the heat exchange media automatically regulates and controls the medium circulation speed by taking the detection values of the temperature sensors as indexes, so that the regulation and control of the cooling forming speed and the cooling forming effect of the plasticizing materials are realized. Therefore, the layout of the heat exchange channel system and the arrangement of the temperature measuring sites of each temperature sensor can directly influence the molding efficiency and the shaping effect of the plasticizing material in the mold cavity. Most of the existing dies monitor the temperature of the dies by adopting a side temperature detection mode, and the design is convenient for the disassembly and assembly of the temperature sensor, reduces the quantity of temperature measurement detection holes and lowers the manufacturing cost of the dies, but the distribution range of the temperature sensor is narrow, the temperature change of plasticizing materials at the middle position of the die cavity cannot be accurately measured, adverse effects are generated on the effect of controlling the cooling and shaping of the plasticizing materials in the dies by taking a heat exchange medium as a medium by pumping equipment, uneven cooling, local overheating or supercooling of the plasticizing materials in the die cavity are easily caused, and the homogeneity of formed plates is poor and the product quality is low.
Disclosure of Invention
In summary, the utility model aims to solve the technical problems of poor homogeneity and low product quality of formed plates caused by the fact that the structural design of the traditional cold-extrusion plate mold is unreasonable, and the accurate and timely circulation regulation and control of heat exchange medium by pumping equipment are influenced.
In order to solve the technical defects, the utility model adopts the technical scheme that the cold-pushing plate die is connected with the discharge end of a screw extruder and comprises a heat-conducting upper die plate, a heat-conducting lower die plate and an opening frame fixedly clamped between the corresponding inner edges of the upper die plate and the lower die plate, and a plate die cavity for molding plasticizing materials and horizontally and longitudinally continuously extruding is formed after the three die plates are assembled; the method is characterized in that: the upper template and the lower template are horizontally and uniformly distributed on the body close to the upper surface and the lower surface of the plate die cavity, a plurality of heat exchange channels for circulating flow of heat exchange medium are arranged on the outer surface of the upper template and the lower template, which is away from the plate die cavity, in a matrix manner, a plurality of temperature measuring probe holes which extend towards the side of the heat exchange channels but are not communicated with the heat exchange channels are arranged on the outer surface of the upper template and the lower template, and each temperature measuring probe hole is detachably connected with a temperature sensor electrically connected with pumping equipment of the heat exchange medium.
Further, the heat exchange channels horizontally penetrate through the bodies of the upper template and the lower template respectively, and each heat exchange channel on each template comprises a medium inlet channel and a medium return channel which are positioned at the front side and the rear side of the extrusion direction of the formed plate in the plate die cavity, and medium circulation channels uniformly distributed between the medium inlet channel and the medium return channels.
Furthermore, the inlet end and the outlet end of each channel except the inlet end of the medium inlet channel and the outlet end of the medium return channel on the same template are sequentially communicated with each other through guide pipe fittings detachably connected to the side edges of the upper template/the lower template.
Further, the temperature measuring probe holes comprise at least one group of channel outer temperature measuring probe holes which are vertically and radially extended to the outside of the same heat exchange channel, and at least one group of channel inner temperature measuring probe holes which are vertically inserted between two adjacent heat exchange channels.
Further, the temperature measuring probe holes outside the channels are positioned on the feeding side of the plasticized material in the plate die cavity, and the temperature measuring probe holes among the channels are positioned on the inner side of the extrusion end of the formed plate in the plate die cavity.
Further, the number of the out-channel temperature measurement probe holes and the inter-channel temperature measurement probe holes in each group is at least three, and the two end parts and the middle part of the heat exchange channel are respectively corresponding to each other.
Further, an upper anti-sticking membrane partition plate and a lower anti-sticking membrane partition plate are detachably paved on the inner surfaces of the upper template and the lower template respectively, and the upper anti-sticking membrane partition plate and the lower anti-sticking membrane partition plate both comprise a metal substrate and an anti-sticking membrane layer plated on the surface of the metal substrate.
Further, the opening frame is of a U-shaped structure, the opening end of the U-shaped structure, the edges of the upper template and the lower template form an extrusion opening of a formed plate in the plate die cavity together, and a feeding channel for continuously feeding plasticizing materials into the plate die cavity is horizontally and longitudinally arranged on the central axis of the bottom sealing end of the U-shaped structure.
Furthermore, the inner side of the back cover end of the U-shaped structure of the opening frame is a concave structure which is favorable for plasticized materials to flow to two sides of the plate die cavity, and the inner side of the feeding channel connected with the plate die cavity is a flaring structure.
Further, the upper template and the lower template are detachably provided with anti-scalding coating components.
Compared with the prior art, the utility model has the beneficial effects that: through matrix arrangement in upper and lower template surface department, vertical temperature measurement probe hole that extends to the heat transfer channel side, with originally locating the front of mould side edge temperature sensor optimization adjustment to the template, realized the accurate measurement of the plasticizing material middle part temperature change condition in the mould intracavity, in time, accurate regulation and control heat transfer medium circulation rate to pumping equipment, regulation and control mould cooling design effect play positive, accurate guide effect, solved the problem that the shaping panel homogeneity is poor, the quality is low because of the improper shaping panel that leads to of plasticizing material heat transfer cooling. In addition, the die has the advantages of simple structure, convenient assembly and use, convenient maintenance, high use reliability and low cost, and is beneficial to reducing the production cost of the formed plate.
Drawings
FIG. 1 is a schematic view of the rear side structure of the mold of the present utility model;
FIG. 2 is a schematic view of the front side structure of the mold of the present utility model;
FIG. 3 is a perspective view of the overall structure of the open frame of the mold of the present utility model;
FIG. 4 is a schematic diagram of the cross-sectional structure of the upper plate of the mold of the present utility model;
FIG. 5 is a top perspective view of the overall structure of the mold of the present utility model;
FIG. 6 is a schematic cross-sectional view of a mold release barrier of the present utility model;
fig. 7 is a schematic view of an assembly structure of the anti-scalding coating member of the mold of the present utility model.
In the figure: 1. the device comprises an upper template, a lower template, a 3-opening frame, a 4-fixing screw hole, a 5-die clamping fixing hole, a 6-extrusion opening, a 7-feeding channel, a 8-heat exchange channel, a 81-medium inlet channel, a 82-medium backflow channel, a 83-medium circulation channel, a 9-flow guide pipe fitting, a 91-metal hose, a 92-threaded joint, a 10-temperature measuring probe hole, a 101-channel external temperature measuring probe hole, a 102-channel temperature measuring probe hole, a 11-upper anti-sticking die partition plate, a 12-lower anti-sticking die partition plate, a 103-metal substrate, a 104-anti-sticking film layer and a 13-anti-scalding coating component.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present utility model, the following description will further illustrate the present utility model by way of specific examples, and the specific embodiments adopted in the following examples are only some preferred embodiments of the technical solution of the present utility model, not limiting the present utility model.
Referring to fig. 1 to 2, the cold-pushing plate die comprises a heat-conducting upper die plate 1, a heat-conducting lower die plate 2 and an opening frame 3 fixedly clamped between corresponding inner edges of the upper die plate 1 and the lower die plate 2, and a plate die cavity for molding a plasticizing material and horizontally and longitudinally continuously extruding is formed after the three die plates are clamped.
Specifically, the configuration and the size of the upper and the lower templates are designed according to the actual size of the plate product, wherein the middle parts of the rear side walls of the upper template 1 and the lower template 2 are respectively provided with a fixed screw hole 4 for fixedly connecting with the discharge end of a screw extruder (not shown in the figure), and the left, right and rear side edges of the upper template 1, the lower template 2 and the opening frame 3 are respectively provided with a mold clamping fixing hole 5 for opening and closing the mold. The opening frame 3 is integrally of a U-shaped structure, the opening end of the U-shaped structure is positioned at the front ends of the upper template and the lower template, and the three structures form an extrusion opening 6 for forming the plate in the plate die cavity. The inner side of the back cover end of the U-shaped structure of the opening frame 3 is of a concave structure, wherein a material outlet end of a butt-joint screw extruder and a material inlet channel 7 for continuously feeding melted plasticizing materials into a plate die cavity are horizontally and longitudinally arranged on the axis in a penetrating manner. In this embodiment, the inner side of the bottom sealing end of the U-shaped structure of the opening frame 3 preferably adopts an equilateral triangle-shaped concave waist line structure, and the inner side end of the feeding channel 7 connected with the plate die cavity adopts a flaring structure, so that the design is favorable for the molten plasticizing material continuously entering through the feeding channel 7 to flow to two sides of the plate die cavity, the plasticizing material is prevented from being cooled and accumulated too early in the front part of the feeding channel 7, the uniformity of the formed plate can be obviously improved, and the quality of the formed plate is ensured.
Specifically, referring to fig. 1 to 2, a plurality of heat exchange channels 8 for circulating heat exchange medium are horizontally and uniformly distributed on the upper die plate 1 and the lower die plate 2, which are close to the upper and lower surfaces of the plate die cavity, and each heat exchange channel 8 horizontally penetrates through the upper die plate 1 and the lower die plate 2 respectively, in this embodiment, five heat exchange channels 8 are taken as an example, and in other embodiments, several heat exchange channels 8 are specifically arranged on each die plate in order to meet the actual requirement. The heat exchange channels 8 on the upper and lower templates comprise a medium inlet channel 81 which is positioned on the front and rear sides of the extrusion direction of the formed plate in the plate die cavity and is respectively used for pumping in a heat exchange medium, a medium return channel 82 which is used for returning the heat exchange medium after heat exchange and temperature rise to a pumping-out device (not shown in the figure), and a medium circulation channel 83 which is positioned between the medium inlet channel 81 and the medium inlet channel 81.
Further, referring to fig. 5, in the present utility model, except for the inlet end of the medium inlet channel 81 and the outlet end of the medium return channel 82, the inlet and outlet ends of the remaining channels are sequentially connected by the guide pipe 9 detachably connected to the side edges of the upper and lower templates 1 and 2.
The heat exchange channels 8 on the upper and lower templates of the die are designed in a transverse arrangement mode, in the process that plasticizing materials in the die cavity of the plate continuously move from one end of the feeding channel 7 to one end of the extrusion port 6, heat exchange is gradually carried out with heat exchange media circularly flowing in each heat exchange channel 8, gradual cooling is realized, the heat exchange efficiency between the heat exchange media flowing in the die cavity and the plasticizing materials is lower as the heat exchange channels 8 are close to the heat exchange channels 8 near the extrusion port 6, the heat release requirement of gradual forming of the plate is met, the problems of local overheating and supercooling of the plasticizing materials in the die cavity of the plate are avoided, continuous cooling, shaping and extrusion of the plasticizing materials are facilitated, and the efficiency and the product quality of plate forming are improved.
Preferably, referring to fig. 5, the diversion pipe fitting 9 adopts a metal hose 91, two ends are detachably connected with the inlet and outlet ends of two adjacent heat exchange channels 8 on the same side of the template through a threaded joint 92, the structural design of the heat exchange channels 8 and the detachable diversion pipe fitting 9 not only reduces the manufacturing difficulty of the upper template and the lower template, facilitates the assembly between the template heat exchange channels 8 and heat exchange medium pumping equipment, but also facilitates the cleaning and dredging of the heat exchange channels 8, is beneficial to the later maintenance, improves the service life of the die and reduces the use cost.
Specifically, referring to fig. 1, 2, 4 and 5, a plurality of temperature measuring probe holes 10 extending vertically to the side of the heat exchange channel 8 but not communicating with the heat exchange channel 8 are arranged in matrix on the outer surfaces of the upper and lower templates 1 and 2 facing away from the plate mold cavity, and each temperature measuring probe hole 10 is detachably connected with a temperature sensor (not shown) electrically connected with a pumping device of the heat exchange medium. In the actual use process, the pump-out equipment automatically adjusts the circulation rate of the heat exchange medium by taking the temperature data detected by each temperature sensor as an index, thereby accurately regulating and controlling the cooling and shaping control of the mould on the plasticizing material.
Further, referring to fig. 4 and 5, in this embodiment, the temperature measuring probe holes 10 on the upper and lower templates each include two sets of outer temperature measuring probe holes 101 extending to the outside of the same heat exchanging channel 8 in a corresponding vertical radial direction, and two sets of outer temperature measuring probe holes 102 inserted between two adjacent heat exchanging channels 8 in a vertical direction, wherein the outer temperature measuring probe holes 101 are located at the feeding side of plasticized material in the plate mold cavity, the inner side of the extrusion end of the molded plate in the plate mold cavity is located at the inter-channel temperature measuring probe holes 102, and the number of each set of outer temperature measuring probe holes 101 and the number of the inter-channel measuring probe holes Wen Tankong are three, which correspond to the two ends and the middle of the heat exchanging channel 8.
In this embodiment, two sets of external temperature measuring holes 101 and two sets of inter-channel temperature measuring holes 102 are taken as examples, and each set of temperature measuring holes 10 includes three sets of external temperature measuring holes 101 and two sets of inter-channel temperature measuring holes 102 respectively located at two ends and in the middle of the heat exchanging channel 8.
Compared with the existing mold for detecting the temperature at the side edge, the temperature measuring probe holes 10 are arranged on the outer surfaces of the upper and lower templates in a matrix arrangement mode and vertically extend to the side of the heat exchange channel 8, the arrangement mode ensures that temperature sensors are inserted in main cooling areas of the mold, particularly in the middle position of the corresponding plate mold cavity, the accurate measurement of the temperature change condition of the middle part of a plasticizing material in the mold cavity is realized, the positive and accurate guiding function is realized on timely and accurate regulation of the circulation rate of the heat exchange medium of a pumping device and the cooling and shaping effects of the mold, and the problems of poor homogeneity and low quality of formed plates caused by improper heat exchange and cooling of the plasticizing material are solved.
In addition, the utility model further optimizes and improves the layout position of the temperature measuring probe holes 10, through the temperature sensors which are correspondingly and radially extended into the outside temperature measuring probe holes 101 of the same heat exchange channel 8, the heat exchange condition between the heat exchange medium entering at the initial temperature and the molten plasticizing material just entering into the die cavity of the plate can be accurately monitored, and simultaneously, through the temperature sensors which are vertically extended into the temperature measuring probe holes 102 between the channels between two adjacent heat exchange channels 8, the heat exchange condition between the heat exchange medium after heating and the plasticizing material tending to be shaped and solidified can be accurately monitored, thereby effectively avoiding the problems of too fast initial cooling speed, premature condensation and solidification of the plasticizing material, untimely and excessive subsequent cooling, poor homogeneity and low quality of the shaped plate, and further improving the cooling and shaping efficiency and the shaping effect of the plasticizing material by the die.
Further, referring to fig. 1, 2 and 6, an upper anti-sticking membrane 11 and a lower anti-sticking membrane 12 are detachably paved on the inner surfaces of the upper die plate 1 and the lower die plate 2 of the die respectively, and the upper anti-sticking membrane and the lower anti-sticking membrane respectively comprise a metal substrate 103 and an anti-sticking membrane layer 104 plated on the surface of the metal substrate 103.
The inner surfaces of the upper and lower templates of the existing cold-pushing plate die are usually coated with anti-sticking film layers to promote continuous shaping extrusion of plasticizing materials in the plate die cavity, so that the extrusion movement of smooth shaping materials is realized, and the effect of sticking the viscous fluid materials to the die is prevented. However, with the increase of the use duration, the loss of the anti-sticking film layer is aggravated, the effect of effectively preventing sticking of the film layer can not be finally achieved, the film layer can only be stopped, the anti-sticking film layer can be plated on the upper and lower templates again, or the film layer can be operated after a new standby template is replaced, the continuous production is delayed, the equipment purchase cost is high, and the production efficiency and the cost of the plate product are low.
Compared with the design that anti-sticking film layers are directly plated on the upper template and the lower template, the anti-sticking film layer 104 on the surfaces of the upper template and the lower template can be worn and then be used continuously after being turned over and assembled, or the novel anti-sticking film layer can be directly replaced and assembled after both surfaces are worn.
Further, referring to fig. 7, the upper die plate 1 and the lower die plate 2 of the die are detachably provided with the anti-scalding coating member 13, so that scalding accidents caused by mistaken touch of operators in the production process can be effectively prevented, and the safety is higher.
The foregoing examples are merely for the purpose of illustrating the technical solution of the present utility model, and are not intended to limit the embodiments of the present utility model. Various modifications and alterations of this utility model will be apparent to those skilled in the art without departing from the spirit and substance of this utility model, and it is intended to cover all such modifications and alterations as fall within the true scope of this utility model.
Claims (10)
1. A cold-pushing plate die is connected with a discharge end of a screw extruder and comprises a heat-conducting upper die plate, a heat-conducting lower die plate and an opening frame fixedly clamped between corresponding inner edges of the upper die plate and the lower die plate, wherein a plate die cavity for molding a plasticizing material and horizontally and longitudinally continuously extruding the plasticizing material is formed after the three die plates are combined; the method is characterized in that: the upper template and the lower template are horizontally and uniformly distributed on the body close to the upper surface and the lower surface of the plate die cavity, a plurality of heat exchange channels for circulating flow of heat exchange medium are arranged on the outer surface of the upper template and the lower template, which is away from the plate die cavity, in a matrix manner, a plurality of temperature measuring probe holes which extend towards the side of the heat exchange channels but are not communicated with the heat exchange channels are arranged on the outer surface of the upper template and the lower template, and each temperature measuring probe hole is detachably connected with a temperature sensor electrically connected with pumping equipment of the heat exchange medium.
2. A cold-extrusion sheet metal die as set forth in claim 1, wherein: the heat exchange channels horizontally penetrate through the bodies of the upper template and the lower template respectively, and each heat exchange channel on each template comprises a medium inlet channel and a medium return channel which are positioned at the front side and the rear side of the extrusion direction of the formed plate in the plate die cavity, and medium circulation channels uniformly distributed between the medium inlet channel and the medium return channels.
3. A cold-extrusion sheet metal die as claimed in claim 2, wherein: the inlet and outlet ends of the channels except the inlet end of the medium inlet channel and the outlet end of the medium return channel on the same template are sequentially communicated with each other through guide pipe fittings detachably connected to the side edges of the upper template/the lower template.
4. A cold-extrusion sheet metal die as set forth in claim 1, wherein: the temperature measuring probe holes comprise at least one group of channel outer temperature measuring probe holes which respectively extend to the outside of the same heat exchange channel in a corresponding vertical radial direction, and at least one group of channel inner temperature measuring probe holes which are respectively inserted between two adjacent heat exchange channels in a vertical direction.
5. A cold-extrusion sheet metal die as in claim 4 wherein: the temperature measurement probe holes outside the channels are positioned on the feeding side of the plasticized material in the plate die cavity, and the temperature measurement probe holes among the channels are positioned on the inner side of the extrusion end of the formed plate in the plate die cavity.
6. A cold-extrusion sheet metal die as in claim 4 wherein: the number of the out-channel temperature measurement probe holes and the number of the inter-channel temperature measurement probe holes in each group are at least three, and the two end parts and the middle part of the heat exchange channel are respectively corresponding to each other.
7. A cold-extrusion sheet metal die as set forth in claim 1, wherein: an upper anti-sticking die partition plate and a lower anti-sticking die partition plate are detachably paved on the inner surfaces of the upper die plate and the lower die plate, and each of the upper anti-sticking die partition plate and the lower anti-sticking die partition plate comprises a metal substrate and an anti-sticking film layer plated on the surface of the metal substrate.
8. A cold-extrusion sheet metal die as set forth in claim 1, wherein: the opening frame is of a U-shaped structure, the opening end of the U-shaped structure, the edges of the upper template and the lower template form an extrusion opening of a formed plate in the plate die cavity together, and a feeding channel for continuously feeding plasticizing materials into the plate die cavity is horizontally and longitudinally arranged on the central axis of the bottom sealing end of the U-shaped structure.
9. A cold-extrusion sheet metal die as in claim 8 wherein: the inner side of the bottom sealing end of the U-shaped structure of the opening frame is a concave structure which is beneficial to the plasticized material to flow to two sides of the plate die cavity, and the inner side of the feeding channel connected with the plate die cavity is a flaring structure.
10. A cold-extrusion sheet metal die as set forth in claim 1, wherein: the upper template and the lower template are detachably provided with anti-scalding coating components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320799273.1U CN219522985U (en) | 2023-04-12 | 2023-04-12 | Cold-pushing plate die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320799273.1U CN219522985U (en) | 2023-04-12 | 2023-04-12 | Cold-pushing plate die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219522985U true CN219522985U (en) | 2023-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320799273.1U Active CN219522985U (en) | 2023-04-12 | 2023-04-12 | Cold-pushing plate die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219522985U (en) |
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2023
- 2023-04-12 CN CN202320799273.1U patent/CN219522985U/en active Active
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