Full-automatic edge covering equipment for mica roll composite material
By designing a fully automated edge-wrapping equipment for mica roll composite materials and utilizing multi-channel edge-wrapping dies and heat-dissipating square tube technology, the problems of cutting waste and abrasion resistance of mica roll composite materials were solved, achieving an efficient and low-cost edge-wrapping process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 浙江荣泰电工器材股份有限公司
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-28
AI Technical Summary
The existing edge-wrapping process for mica roll composite materials easily generates excess waste material from cutting plastic film, and has weak abrasion resistance, leading to powder shedding and decreased mechanical properties.
Design a fully automatic edge-wrapping device for mica roll composite materials. It adopts a screw extruder, edge-wrapping die and multi-stage drying oven. Through the multi-channel structure of the edge-wrapping die and the heat dissipation square tube technology, it can achieve uniform coating and rapid cooling of thermoplastic resin, avoiding cutting and trimming.
It improves edge-wrapping efficiency, reduces waste from cutting plastic film, lowers costs, improves edge-wrapping quality, and eliminates warping and deformation problems caused by internal stress.
Smart Images
Figure CN224170424U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of composite mica roll edge-wrapping equipment, and in particular to a fully automatic edge-wrapping equipment for mica roll composite materials. Background Technology
[0002] Mica coil composite materials have been successfully applied in the automotive, electrical and electronic, and aerospace industries due to their excellent high-temperature resistance, flame retardancy, and insulation breakdown resistance. Mica coil composite materials are commonly used for wrapping wire harnesses, providing excellent flame retardant and insulating protection.
[0003] While existing mica coil composite materials can improve the flame-retardant insulation safety of wrapped wire harnesses, the mica coil composite materials are limited by the manufacturing process and have relatively weak abrasion resistance. When the wrapped mica coil composite materials are squeezed and rubbed, they will shed powder, which will not only produce friction noise, but also affect the mechanical properties and protective effect of the mica coil composite materials.
[0004] To address the relatively weak abrasion resistance of mica roll composites, which leads to powder shedding under pressure and friction, edge-wrapping is performed, involving the lamination of a plastic film onto the surface of the mica roll composite. However, because the matrix resin of the mica roll composite is a high-temperature resistant silicone resin, the plastic film laminated to the surface cannot be laminated using conventional hot-pressing processes. Currently, edge-wrapping production lines involve hot-pressing two plastic films onto the upper and lower surfaces of the mica roll composite, with the two films on either side of the composite being hot-pressed together. The difference in width between a single plastic film and the mica roll composite is more than four times the thickness of the composite. After edge-wrapping, the excess plastic film on the periphery of the mica roll composite must be trimmed to obtain the finished edge-wrapped mica roll composite. In summary, existing edge-wrapping processes for mica roll composites easily generate excess waste material from the trimmed plastic film. Utility Model Content
[0005] To address the problem of excessive waste plastic film from cutting during the edge-wrapping process of existing mica roll composite materials, this application provides a fully automatic edge-wrapping device for mica roll composite materials.
[0006] The fully automatic edge-wrapping equipment for mica roll composite materials provided in this application is achieved through the following technical solution:
[0007] An automated edge-wrapping device for mica roll composite materials includes a screw extruder, a mica roll unwinding roller assembly located upstream of the screw extruder, a transfer roller assembly, a multi-stage drying oven, and a take-up roller assembly located downstream of the screw extruder. The screw extruder is connected to an edge-wrapping die head, which is integrally formed with a channel for conveying the mica roll composite material. The edge-wrapping die head is integrally formed with a plurality of extrusion channels, and a plurality of extrusion channel outlets are arranged around the channel outlets.
[0008] This application can improve the edge-wrapping efficiency of mica roll composite materials, effectively reduce the generation of waste from cutting plastic film, and lower the edge-wrapping cost of mica roll composite materials.
[0009] Preferably, the obturation die head has a first main channel integrally formed along its length on the side facing away from the channel outlet; the obturation die head also has a second main channel integrally formed and connected to the first main channel; one end of the first main channel is connected to the extrusion port of the screw extruder, and the other end is connected to the second main channel; the obturation die head also has a first branch channel, a second branch channel, and a third branch channel integrally formed and connected to the second main channel; the obturation die head has a plurality of upper branch channels integrally formed along its length on the side facing away from the channel inlet, which are connected to the first branch channel; the obturation die head has a plurality of middle branch channels integrally formed along its length on the side facing away from the channel inlet, which are connected to the second branch channel; and the obturation die head has a plurality of lower branch channels integrally formed along its length on the side facing away from the channel inlet, which are connected to the third branch channel.
[0010] Preferably, the plurality of upper branch channels are located above the channel outlet; the plurality of lower branch channels are located below the channel outlet; and the plurality of middle branch channels are located on both sides of the channel outlet.
[0011] Preferably, the diameter of the upper branch channel is 0.5-2 mm; the distance between the central axes of adjacent upper branch channels is 2-6 times the diameter of the upper branch channel; and the vertical distance from the central axis of the upper branch channel to the upper surface of the channel outlet is 3-5 mm.
[0012] Preferably, the diameter of the lower branch channel is 0.5-2 mm; the distance between the central axes of adjacent lower branch channels is 2-6 times the diameter of the lower branch channel; and the vertical distance from the central axis of the lower branch channel to the lower surface of the channel outlet is 3-5 mm.
[0013] Preferably, the middle branch channel is divided into a middle branch channel L located on the left side of the channel outlet and a middle branch channel R located on the right side of the channel outlet.
[0014] Preferably, the diameter of the central branch channel L is 0.25-1mm; the distance between the central axes of adjacent central branch channels L is equal to 2-4 times the diameter of the central branch channel L; and the vertical distance from the central axis of the central branch channel L to the upper surface of the channel outlet is 2-5mm.
[0015] Preferably, the diameter of the central branch channel R is 0.25-1mm; the distance between the central axes of adjacent central branch channels R is equal to 2-4 times the diameter of the central branch channel R; and the vertical distance from the central axis of the central branch channel R to the upper surface of the channel outlet is 2-5mm.
[0016] The molten material extruded by the self-designed edge-sealing die can be evenly coated on the outer surface of the mica roll composite material, ensuring the edge-sealing quality of the mica roll composite material, effectively reducing the generation of waste from cutting plastic film, and lowering the edge-sealing cost of mica roll composite material.
[0017] Preferably, the edge-sealing die head outlet is connected to a discharge hopper; the extruded molten material in the upper branch channel, middle branch channel, and lower branch channel all flows into the discharge hopper; the discharge end of the discharge hopper is connected to a heat dissipation square tube, and a heat exchange medium flow channel is integrally formed inside the heat dissipation square tube; the bottom of the heat dissipation square tube is connected to a heat exchange medium input interface that communicates with the heat exchange medium flow channel; the top of the heat dissipation square tube is connected to a heat exchange medium output interface that communicates with the heat exchange medium flow channel.
[0018] Preferably, the length of the inner channel cross-section in the heat dissipation square tube is 0.1-0.2 mm longer than the width of the mica roll composite material; and the width of the inner channel cross-section in the heat dissipation square tube is 0.1-0.2 mm longer than the thickness of the mica roll composite material.
[0019] The thermoplastic resin uniformly coated on the outer surface of the mica roll composite material can be rapidly cooled to below its Tg temperature by the heat dissipation square tube. The edge-wrapped mica roll composite material output by the heat dissipation square tube can ensure its dimensional stability by passing through the transfer roller group. After being heat-treated in a multi-stage oven to eliminate internal stress, it is then wound into the winding roller group.
[0020] In summary, this application has the following advantages:
[0021] 1. The fully automatic edge-wrapping equipment for mica roll composite materials is used to wrap the edges of mica roll composite materials without the need for secondary cutting and trimming, which effectively reduces the generation of waste plastic film and lowers the edge-wrapping cost.
[0022] 2. Using fully automatic edge-wrapping equipment for mica roll composite materials to edge-wrap mica roll composite materials eliminates the need for secondary cutting and trimming, thereby improving the edge-wrapping efficiency of mica roll composite materials.
[0023] 3. Using fully automatic edge-wrapping equipment for mica roll composite materials to wrap the edges, the multi-stage oven heat treatment can eliminate the internal stress of the plastic film, which can improve the problems of warping, deformation and cracking caused by high internal stress of the plastic film, thereby improving the edge-wrapping quality. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of a fully automatic edge-wrapping equipment for mica roll composite materials according to this application.
[0025] Figure 2 This is the front view of the edge-sealing mold head in the embodiments of this application.
[0026] Figure 3 This is a cross-sectional view of the edge-sealing die head in the embodiments of this application.
[0027] Figure 4 This is a cross-sectional view of the heat dissipation square tube in an embodiment of this application.
[0028] In the diagram, 1 is the screw extruder; 2 is the edge-sealing die; 20 is the discharge hopper; 201 is the heat dissipation square tube; 202 is the heat exchange medium flow channel; 2021 is the upper heat exchange medium flow channel; 2022 is the middle heat exchange medium flow channel; 2023 is the lower heat exchange medium flow channel; 203 is the heat exchange medium input interface; 2031 is the upper heat exchange medium input interface; 2032 is the middle heat exchange medium input interface; 2033 is the lower heat exchange medium input interface; 204 is the heat exchange medium output interface; 2044 is the upper heat exchange medium output interface; 204 2. Middle heat exchange medium output interface; 2043. Lower heat exchange medium output interface; 21. Channel; 22. First main channel; 221. Second main channel; 23. First branch channel; 231. Upper branch channel; 24. Second branch channel; 241. Middle branch channel; 2411. Middle branch channel L; 2412. Middle branch channel R; 25. Third branch channel; 251. Lower branch channel; 3. Unwinding roller group; 4. Transfer roller group; 5. Multi-section drying oven; 6. Rewinding roller group. Detailed Implementation
[0029] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments.
[0030] Example: Refer to Figure 1 A fully automatic edge-wrapping device for mica roll composite materials includes a screw extruder 1, a mica roll unwinding roller group 3 located upstream of the screw extruder 1, a transfer roller group 4 located downstream of the screw extruder 1, a multi-stage drying oven 5, and a take-up roller group 6.
[0031] Reference Figure 1 and Figure 2, a screw extruder 1 is connected to a edge wrapping die head 2, and a channel 21 for transmitting mica roll composite materials is integrally formed on the edge wrapping die head 2. The edge wrapping die head 2 is integrally formed with a plurality of extrusion channels, and the outlets of the plurality of extrusion channels are arranged around the outlet of the channel 21.
[0032] Referring to Figure 2 and Figure 3 , on the side of the edge wrapping die head 2 facing away from the outlet of the channel 21, a first main channel 22 is integrally formed along its own length direction. The edge wrapping die head 2 is integrally formed with a second main channel 221 communicating with the first main channel 22, and the second main channel 221 is in a rectangular shape with a horizontal bar in the middle. One end of the first main channel 22 is connected to the extrusion outlet of the screw extruder 1, and the other end is connected to the second main channel 221.
[0033] Referring to Figure 2 and Figure 3 , the edge wrapping die head 2 is integrally formed with a first branch channel 23, a second branch channel 24, and a third branch channel 25 communicating with the second main channel 221. On the side of the edge wrapping die head 2 facing away from the inlet of the channel 21, a plurality of upper branch holes 231 communicating with the first branch channel 23 are integrally formed along its own length direction, and the plurality of upper branch holes 231 are located above the outlet of the channel 21. The diameter of the upper branch holes 231 is 0.5 - 2 mm. Preferably, the diameter of the upper branch holes 231 is 1 mm. The distance between the central axes of adjacent upper branch holes 231 is equal to 2 - 6 times the diameter of the upper branch holes 231. Preferably, the distance between the central axes of adjacent upper branch holes 231 is equal to 2 - 2.5 times the diameter of the upper branch holes 231. The vertical distance from the central axis of the upper branch holes 231 to the upper surface of the outlet of the channel 21 is 3 - 5 mm. Preferably, the vertical distance from the central axis of the upper branch holes 231 to the upper surface of the outlet of the channel 21 is 3 - 3.5 mm.
[0034] Referring to Figure 2 and Figure 3 , on the side of the edge wrapping die head 2 facing away from the inlet of the channel 21, a plurality of middle branch holes 241 communicating with the second branch channel 24 are integrally formed along its own length direction, and a plurality of lower branch holes 251 are located below the outlet of the channel 21. The diameter of the lower branch holes 251 is 0.5 - 2 mm. Preferably, the diameter of the lower branch holes 251 is 1 mm. The distance between the central axes of adjacent lower branch holes 251 is equal to 2 - 6 times the diameter of the lower branch holes 251. Preferably, the distance between the central axes of adjacent lower branch holes 251 is equal to 2 - 2.5 times the diameter of the lower branch holes 251. The vertical distance from the central axis of the lower branch holes 251 to the lower surface of the outlet of the channel 21 is 3 - 5 mm. Preferably, the vertical distance from the central axis of the lower branch holes 251 to the lower surface of the outlet of the channel 21 is 3 - 3.5 mm.
[0035] Referring to Figure 2 and Figure 3The side facing away from the inlet of channel 21 has several lower branch channels 251 integrally formed along its own length direction, which are connected to the third branch channel 25. The middle branch channel 241 is divided into a middle branch channel L2411 located on the left side of the outlet of channel 21 and a middle branch channel R2412 located on the right side of the outlet of channel 21.
[0036] Reference Figure 2 and Figure 3 The diameter of the middle branch channel L2411 is 0.25-1 mm. Preferably, the diameter of the middle branch channel L2411 is 1 mm. The distance between the central axes of adjacent middle branch channels L2411 is 2-4 times the diameter of the middle branch channel L2411. Preferably, the distance between the central axes of adjacent middle branch channels L2411 is 2-2.5 times the diameter of the middle branch channel L2411. The vertical distance from the central axis of the middle branch channel L2411 to the upper surface of the outlet of channel 21 is 2-5 mm. Preferably, the vertical distance from the central axis of the middle branch channel L2411 to the upper surface of the outlet of channel 21 is 3-3.5 mm.
[0037] Reference Figure 2 and Figure 3 The diameter of the central branch channel R2412 is 0.25-1 mm. Preferably, the diameter of the central branch channel R2412 is 1 mm. The distance between the central axes of adjacent central branch channels R2412 is 2-4 times the diameter of the central branch channel R2412. Preferably, the distance between the central axes of adjacent central branch channels R2412 is 2-2.5 times the diameter of the central branch channel R2412. The vertical distance from the central axis of the central branch channel R2412 to the upper surface of the outlet of channel 21 is 2-5 mm. Preferably, the vertical distance from the central axis of the central branch channel R2412 to the upper surface of the outlet of channel 21 is 3-3.5 mm.
[0038] Reference Figure 2 and Figure 3 The extrusion channels integrally formed by the edge-sealing die head 2 are the upper branch channel 231, the lower branch channel 251, the middle branch channel L2411, and the middle branch channel R2412.
[0039] Reference Figure 1 and Figure 2 The edge-sealing die head 2 has an outlet connected to a hopper 20, which is fixedly connected to the side of the edge-sealing die head 2 facing away from the outlet of channel 21 by an interference fit, so that the extruded molten material in the upper branch channel 231, middle branch channel 241, and lower branch channel 251 all flows into the hopper 20. A heat dissipation square tube 201 is fixedly connected to the discharge end of the hopper 20.
[0040] Reference Figure 1 and Figure 4The heat dissipation square tube 201 has an integrally formed heat exchange medium flow channel 202. The bottom of the heat dissipation square tube 201 is connected to a heat exchange medium input interface 203 that is connected to the heat exchange medium flow channel 202, and the top of the heat dissipation square tube 201 is connected to a heat exchange medium output interface 204 that is connected to the heat exchange medium flow channel 202.
[0041] Reference Figure 1 and Figure 4 To achieve good heat dissipation efficiency, the thermoplastic resin uniformly coated on the outer surface of the mica roll composite material is rapidly cooled to below its Tg temperature. The heat exchange medium flow channel 202 integrally formed inside the heat dissipation square tube 201 is divided into an upper heat exchange medium flow channel 2021, a middle heat exchange medium flow channel 2022, and a lower heat exchange medium flow channel 2023. The heat exchange medium input interface 203 connected to the bottom of the heat dissipation square tube 201 is divided into an upper heat exchange medium input interface 2031 connected to the upper heat exchange medium flow channel 2021, a middle heat exchange medium input interface 2032 connected to the middle heat exchange medium flow channel 2022, and a lower heat exchange medium input interface 2033 connected to the lower heat exchange medium flow channel 2023. The heat exchange medium output interface 204 connected to the top of the heat dissipation square tube 201 is divided into a heat exchange medium output interface 2041 connected to the upper heat exchange medium flow channel 2021, a middle heat exchange medium output interface 2042 connected to the middle heat exchange medium flow channel 2022, and a lower heat exchange medium output interface 2043 connected to the lower heat exchange medium flow channel 2023. By controlling the flow rate of the heat exchange medium in the upper heat exchange medium input interface 2031, the flow rate of the heat exchange medium in the middle heat exchange medium input interface 2032, and the flow rate of the heat exchange medium in the lower heat exchange medium input interface 2033, the cooling rate of the thermoplastic resin covering the outer surface of the mica roll composite material inside the heat dissipation square tube 201 can be adjusted, so that the thermoplastic resin uniformly covering the outer surface of the mica roll composite material can be rapidly cooled to below its Tg temperature. The edge-wrapped mica roll composite material output from the heat dissipation square tube 201 can ensure its dimensional stability after passing through the transfer roller group 4, and then is wound into the winding roller group after being heat-treated in a multi-stage oven to eliminate internal stress.
[0042] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A fully automatic edge-binding device for mica roll composite materials, comprising a screw extruder (1), characterized in that: It also includes a mica roll unwinding roller group (3) located upstream of the screw extruder (1), a transfer roller group (4) located downstream of the screw extruder (1), a multi-section drying oven (5) and a take-up roller group (6). The screw extruder (1) is connected to a sealing die (2). The sealing die (2) is integrally formed with a channel (21) for the transfer of mica roll composite material. The sealing die (2) is integrally formed with several extrusion channels, and several outlets of the extrusion channels are arranged around the outlet of the channel (21).
2. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 1, characterized in that: The edge-sealing die (2) has a first main channel (22) integrally formed on its side facing away from the outlet of the channel (21) along its own length direction; the edge-sealing die (2) has a second main channel (221) integrally formed and connected to the first main channel (22); one end of the first main channel (22) is connected to the extrusion port of the screw extruder (1), and the other end is connected to the second main channel (221); the edge-sealing die (2) has a first branch channel (23) and a second branch channel (24) integrally formed and connected to the second main channel (221). 24) The third branch channel (25); the side of the inlet of the back channel (21) is integrally formed with several upper branch channels (231) communicating with the first branch channel (23) along its own length direction; the side of the inlet of the back channel (21) is integrally formed with several middle branch channels (241) communicating with the second branch channel (24) along its own length direction; the side of the inlet of the back channel (21) is integrally formed with several lower branch channels (251) communicating with the third branch channel (25) along its own length direction.
3. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 2, characterized in that: A plurality of the upper branch channels (231) are located above the outlet of the channel (21); a plurality of the lower branch channels (251) are located below the outlet of the channel (21); and a plurality of the middle branch channels (241) are located on both sides of the outlet of the channel (21).
4. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 2, characterized in that: The diameter of the upper branch channel (231) is 0.5-2 mm; the distance between the central axes of adjacent upper branch channels (231) is 2-6 times the diameter of the upper branch channel (231); the vertical distance from the central axis of the upper branch channel (231) to the upper surface of the outlet of the channel (21) is 3-5 mm.
5. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 2, characterized in that: The diameter of the lower branch channel (251) is 0.5-2 mm; the distance between the central axes of adjacent lower branch channels (251) is 2-6 times the diameter of the lower branch channel (251); the vertical distance from the central axis of the lower branch channel (251) to the lower surface of the outlet of the channel (21) is 3-5 mm.
6. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 2, characterized in that: The middle branch channel (241) is divided into a middle branch channel L (2411) located on the left side of the outlet of the channel (21) and a middle branch channel R (2412) located on the right side of the outlet of the channel (21).
7. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 6, characterized in that: The diameter of the middle branch channel L (2411) is 0.25-1mm; the distance between the central axes of adjacent middle branch channels L (2411) is 2-4 times the diameter of the middle branch channel L (2411); the vertical distance from the central axis of the middle branch channel L (2411) to the upper surface of the outlet of the channel (21) is 2-5mm.
8. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 6, characterized in that: The diameter of the middle branch channel R (2412) is 0.25-1mm; the distance between the central axes of adjacent middle branch channels R (2412) is 2-4 times the diameter of the middle branch channel R (2412); the vertical distance from the central axis of the middle branch channel R (2412) to the upper surface of the outlet of the channel (21) is 2-5mm.
9. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 2, characterized in that: The edge-sealing die head (2) is connected to a discharge hopper (20) at its outlet; the extruded molten material in the upper branch channel (231), middle branch channel (241), and lower branch channel (251) all flows into the discharge hopper (20); the discharge end of the discharge hopper (20) is connected to a heat dissipation square tube (201), and a heat exchange medium flow channel (202) is integrally formed inside the heat dissipation square tube (201); the bottom of the heat dissipation square tube (201) is connected to a heat exchange medium input interface (203) that is connected to the heat exchange medium flow channel (202); the top of the heat dissipation square tube (201) is connected to a heat exchange medium output interface (204) that is connected to the heat exchange medium flow channel (202).
10. The fully automatic edge-wrapping equipment for mica roll composite materials according to claim 9, characterized in that: The length of the inner channel cross-section of the heat dissipation square tube (201) is 0.1-0.2 mm longer than the width of the mica roll composite material; the width of the inner channel cross-section of the heat dissipation square tube (201) is 0.1-0.2 mm longer than the thickness of the mica roll composite material.