Film covering integrated forming machine suitable for popcorn shoe sole and shoe sole forming process

By adopting a coating -covered one -piece molding machine in the split -bearing shoe sole, the steam and negative pressure technology are used to synchronize the molding and coating of the membrane to solve the problem of dark lines on the surface of the sole, and achieve better design and production efficiency.

CN119348060APending Publication Date: 2025-01-24MAOTAI FUJIAN SOLES CO LTD
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Patent Information

Application Number
CN202411376138.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-01-24

AI Technical Summary

Technical Problem

In the existing popcorn sole production process, irregular granular dark patterns on the sole surface, resulting in aesthetic fatigue for consumers and increasing the difficulty of shoe appearance design.

Method used

Adopt a coating of the container of popcorn shoe soles. By synchronizing the bottom surface and side of the soles of the soles of the soles of the soles of the soles of the soles of the soles, the membrane is used to use the steam and negative pressure technology Inject popcorn particles at high temperature to form a viscous surface.

Benefits of technology

Realized the film covering process at the same time in the production process of popcorn shoes, eliminating the steps of material transfer, increasing the degree of automation, reducing labor costs, and improving the design of the product, eliminating the dark lines, improving the beauty of the product And production efficiency.

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Abstract

The invention relates to the technical field of sole production, in particular to a film covering integrated forming machine suitable for popcorn soles and a sole forming process. The equipment comprises a pressing assembly, a die, a steam generator, a positive and negative pressure generator, a stock bin and a film conveying device, the die comprises a female die and a male die, the female die is provided with a cavity and an air pressure cavity, a first air hole is formed in the cavity, the female die is provided with a cutting groove formed around the cavity by a circle, the male die is provided with an embedded block, and a second air hole is formed in the male die; the film conveying device comprises an output roller and a recycling roller, and a film material output by the film material roll penetrates through the space between the female die and the male die and then reaches the recycling roller to be wound and recycled. The effect of eliminating dark fringes is achieved by covering the bottom face and the side face of the popcorn shoe body blank with the film materials, the film covering procedure is synchronously completed in the popcorn shoe sole forming process, the material transferring step is omitted, full-process automatic operation can be achieved, and the labor cost is low.
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Description

Technical Field

[0001] The invention relates to the technical field of sole production, and in particular to a film-coating integrated molding machine suitable for popcorn soles and a sole molding process. Background Art

[0002] ETPU is a type of TPU material formed by supercritical foaming. Because its appearance resembles popcorn, the sports shoe midsole made of ETPU is called popcorn midsole. It has the advantages of excellent resilience, extremely low compression permanent deformation, good wearing experience, and environmentally friendly and efficient processing.

[0003] After the existing popcorn soles are produced, they will show irregular dark grains on the surface. Similar textures bring aesthetic fatigue to consumers, and the grain dark grains also have a certain adverse effect on the appearance design of the shoe body. Therefore, there is a practical demand in the industry to eliminate the grain dark grains on the surface of popcorn soles. In order to eliminate these dark grains, the existing process on the market uses a coating method on the outside of the sole blank to cover the dark grains. The existing process is to complete the coating through another independent coating process after the popcorn sole blank is formed. Although the effect of eliminating the dark grains can be achieved, the steps are cumbersome and the production cost is high. Therefore, how to realize the integrated processing of popcorn sole molding and coating becomes the problem to be solved in this case. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a film-coating integrated molding machine and a sole molding process suitable for popcorn soles that can realize integrated popcorn sole molding and film coating and have a high degree of automation.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: a film-coating integrated molding machine suitable for popcorn soles, comprising: The pressing assembly comprises a first bracket and a second bracket, wherein the first bracket and the second bracket can be moved closer or farther away; The mold is installed in the pressing assembly, including a female mold and a male mold, the female mold is installed on the first bracket, and the male mold is installed on the second bracket. The female mold is provided with a recessed cavity on one side, and a pneumatic cavity is provided in the female mold. A first air hole penetrating to the pneumatic cavity is opened in the cavity. The female mold is provided with a cutting groove arranged around the outside of the cavity. A protruding insert is provided on one side of the male mold, and the insert is adapted to the shape of the cavity and arranged relatively. A plurality of second air holes passing through the insert are opened on the male mold, and the male mold is provided with a steam cavity and an exhaust cavity, a part of the second air holes corresponds to the steam cavity, and another part of the second air holes corresponds to the exhaust cavity. The male mold is provided with a cutter arranged around the insert, and the cutter corresponds to the cutting groove. The male mold is provided with an injection port penetrated by the insert; A steam generator, used to generate steam and connected to the steam chamber; A positive and negative pressure generator, which is used to provide positive pressure or negative pressure and is connected to the air pressure chamber; A silo, wherein popcorn particles are arranged in the silo, and the silo is connected to the injection port; The film conveying device comprises an output roller and a recovery roller, wherein the output roller is arranged above the laminating assembly, and the recovery roller is arranged below the laminating assembly. The film material roll is arranged on the output roller, and the film material output from the film material roll passes between the concave die and the convex die and is then wound around the recovery roller for recovery.

[0006] Furthermore, the punch also includes an electric heating wire, and a channel is provided in the cutter along the extension direction of the cutter. The electric heating wire is passed through the channel and is in contact with the cutter. The electric heating wire is used to heat the cutter.

[0007] Furthermore, the die is provided with a plurality of third air holes on a side where the cavity is provided, the third air holes are distributed outside the cavity, and the third air holes penetrate into the air pressure cavity.

[0008] Furthermore, the air pressure chamber is divided into a first chamber and a second chamber which are independent of each other. The first chamber is provided with a first pipe opening, and the second chamber is provided with a second pipe opening. The first pipe opening and the second pipe opening are respectively connected to the positive and negative pressure generators, and the positive and negative pressure generators perform independent air pressure control on the first pipe opening and the second pipe opening. Each of the first air holes correspondingly penetrates into the first chamber, and each of the third air holes penetrates into the second chamber.

[0009] Furthermore, the mold also includes a sealing plate and an air equalizing pipe. The sealing plate is closed and connected to the die and an air pressure cavity is formed between the sealing plate and the die. An air pressure port is provided on the sealing plate. The air equalizing pipe is provided in the air pressure cavity. The air equalizing pipe is arranged in a circular shape and has a plurality of air ports distributed on the air equalizing pipe. One end of the air equalizing pipe is connected to the air pressure port.

[0010] Furthermore, the punch includes several groups of air grids, which are installed on the opposite side of the insert block. A partition plate is provided inside the air grid, and the partition plate separates the air grid to form the steam chamber and the exhaust chamber. A steam chamber is correspondingly provided with a steam inlet, and an exhaust chamber is correspondingly provided with an exhaust port, and each steam inlet is connected to a steam generator.

[0011] Furthermore, the pressing assembly also includes a transverse driving mechanism, which is connected to the first bracket and drives the first bracket to move laterally. The second bracket is fixedly arranged, a plurality of concave molds are arranged in an array on the first bracket, a plurality of convex molds are arranged in an array on the second bracket, and one concave mold corresponds to one convex mold laterally.

[0012] Furthermore, it also includes a conveyor belt, which passes under the pressing assembly and receives the sole blank dropped from the pressing assembly and delivers it out.

[0013] Furthermore, the output roller and the recovery roller are driven by a servo motor respectively.

[0014] A sole forming process, based on a film-coated integrated forming machine suitable for popcorn soles, has the following steps: S1. The output roller and the recovery roller cooperate to convey the film material, so that the film material is between the concave mold and the convex mold and the projection of the film material toward the concave mold covers the cavity, and the film material stops conveying; S2. The first bracket and the second bracket move closer to each other until the punch is close to the film material, the steam generator passes steam into the steam chamber of the punch, and the steam is blown toward the film material through the corresponding second pores, and the film material is softened by heat; S3. The positive and negative pressure generator draws air into the air pressure cavity of the concave mold to form a negative pressure state in the air pressure cavity. The first air hole generates negative pressure suction, and the film material is sucked into the cavity. Since the film material softens and becomes ductile when heated, the film material sucked into the cavity is deformed and evenly adheres to the inner wall of the cavity. S4. The first bracket and the second bracket move closer to each other until the punch closes the cavity, and the popcorn particles are injected into the cavity through the injection port and filled; S4. The steam generator passes steam into the steam cavity of the punch, and the steam enters the cavity through the second pore corresponding to the steam cavity, and then is discharged from the second pore corresponding to the exhaust cavity, and the steam passes through the popcorn particles and heats the surface thereof to produce stickiness; S5. The first bracket and the second bracket move close to each other until the male and female molds are combined and pressed tightly. During this process, the cutter is placed in the cutting groove to cut the film material, and the film material in the cavity is cut independently; the insert is pressed toward the cavity, and the popcorn particles are squeezed and bonded to each other to form a sole blank, and the film material is bonded and covered on the bottom and side surfaces of the sole blank; S6. The first bracket is separated from the second bracket and moved until there is a discharge gap between the male and female molds, the positive and negative pressure generators are fed into the air pressure chamber with positive pressure, the first pores generate thrust to push the sole blank out of the cavity, and the sole blank falls out through the discharge gap; S7. The output roller and the recovery roller rotate in coordination, and the cut part of the film material is rolled into the recovery roller, and the process returns to step 1, and the next round of the sole forming process is repeated.

[0015] It can be seen from the above description of the present invention that, compared with the prior art, the film-coating integrated molding machine and sole molding process suitable for popcorn soles provided by the present invention have the following advantages: 1. This application achieves the effect of eliminating dark lines by coating the bottom and sides of the popcorn shoe body with film material, thus providing a better foundation for product appearance design; this application realizes the simultaneous completion of the coating process in the popcorn sole molding process, eliminating the material transfer step, and can achieve full automated operation with low labor costs.

[0016] 2. The film material of the present application is conveyed by a roller group, and a cutting groove and a cutting knife are arranged on the mold. The film material can be cut and separated during the mold closing process, with a high degree of automation. A film material heating and softening process is arranged in the process to make the film material have better ductility. Under the action of negative pressure, the film material can be evenly fitted in the mold cavity, thereby ensuring the integrity and uniformity of the final product coating.

[0017] 3. The cutter is equipped with an electric heating wire. The heated cutter can ensure the complete cutting of the film material, further ensuring the reliability and stability of the production process.

[0018] 4. In the present application, several groups of molds can be arranged in a pressing assembly to work synchronously, so the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic structural diagram of a film-coating integrated molding machine suitable for popcorn soles.

[0020] Figure 2 This is a schematic diagram of the mold structure of Example 1 of the present invention.

[0021] Figure 3 Schematic diagram of the mold decomposition structure of the first embodiment of the present invention Figure 1 .

[0022] Figure 4 Schematic diagram of the mold decomposition structure of the first embodiment of the present invention Figure 2 .

[0023] Figure 5 This is a schematic diagram of the mold cross-section and connection structure of Example 1 of the present invention.

[0024] Figure 6 It is a schematic diagram of an enlarged partial cross section of a mold according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the cross-sectional structure of the mold according to the second embodiment of the present invention.

[0026] The symbols in the figure correspond to the following: 1. Pressing assembly; 11. First bracket; 12. Second bracket; 13. Transverse drive mechanism; 2. Mold; 21. Concave mold; 211. Cavity; 212. Air pressure cavity; 2121. First chamber; 2122. First nozzle; 2123. Second chamber; 2124. Second nozzle; 213. First air hole; 214. Cutting groove; 215. Third air hole; 22. Punch; 221. Insert; 222. Second air hole; 22 3. Steam chamber; 2231. Steam inlet; 224. Exhaust chamber; 2241. Exhaust port; 225. Cutter; 2251. Channel; 226. Electric heating wire; 227. Injection port; 228. Gas grid; 2281. Partition plate; 23. Sealing plate; 231. Air pressure port; 24. Air equalizing pipe; 241. Air port; 3. Steam generator; 4. Positive and negative pressure generator; 5. Silo; 6. Membrane conveying device; 61. Output roller; 62. Recovery roller; 7. Conveyor belt. DETAILED DESCRIPTION

[0027] The present invention is further described below through specific implementation modes.

[0028] Reference Figures 1 to 6 As shown, in the first embodiment, a film-coating integrated molding machine suitable for popcorn soles includes a pressing component 1, a mold 2, a steam generator 3, a positive and negative pressure generator 4, a silo 5, a film conveying device 6, and a conveyor belt 7.

[0029] The pressing assembly 1 includes a first bracket 11, a second bracket 12, and a transverse driving mechanism 13. The transverse driving mechanism 13 is connected to the first bracket 11 and drives the first bracket 11 to move transversely. The second bracket 12 is fixedly arranged. The first bracket 11 and the second bracket 12 can move closer or farther.

[0030] The mold 2 is installed in the pressing assembly 1, including a die 21 and a punch 22. The die 21 is installed on the first bracket 11, and the punch 22 is installed on the second bracket 12. A plurality of die 21 are arranged in an array on the first bracket 11, and a plurality of punches 22 are arranged in an array on the second bracket 12, and one die 21 corresponds to one punch 22 laterally.

[0031] A concave cavity 211 is provided on one side of the die 21, a pressure cavity 212 is provided in the die 21, a first air hole 213 penetrating to the pressure cavity 212 is provided in the cavity 211, a cutting groove 214 is provided around the outside of the cavity 211, and a plurality of third air holes 215 are provided on the side of the die 211 provided with the cavity 211. The third air holes 215 are distributed outside the cavity 211 and penetrate to the pressure cavity 212. The mold 2 also includes a sealing plate 23 and an air equalizing tube 24. The sealing plate 23 is sealed and connected to the die 21, and an air pressure cavity 212 is formed between the sealing plate 23 and the die 21. An air pressure port 231 is provided on the sealing plate 23, and the air equalizing tube 24 is provided in the pressure cavity 212. The air equalizing tube 24 is arranged in a circular shape, and a plurality of air ports 241 are distributed on the air equalizing tube 24, and one end of the air equalizing tube 24 is connected to the air pressure port 231.

[0032] The punch 22 is provided with a protruding block 221 on one side, the block 221 is adapted to the shape of the cavity 211 and is arranged opposite to each other, the punch 22 is provided with a plurality of second air holes 222 that pass through the block 221, the punch 22 is provided with a steam cavity 223 and an exhaust cavity 224, a part of the second air holes 222 corresponds to the steam cavity 223, and another part of the second air holes 222 corresponds to the exhaust cavity 224, the punch 22 is provided with a cutter 225 arranged around the block 221, the cutter 225 corresponds to the cutting groove 214, the punch 22 also includes an electric heating wire 226, the cutter 225 is provided with a channel 2251 arranged along the extension direction of the cutter 225, and the electric heating wire 226 passes through the steam cavity 223 and the exhaust cavity 224. It is arranged in the channel 2251, and the electric heating wire 226 is in contact with the cutter 225, the electric heating wire 226 is used to heat the cutter 225, and the punch 22 is provided with an injection port 227 passed through by the insert 221; the punch 22 includes a plurality of groups of gas grids 228, the gas grids 228 are installed on the opposite side of the insert 221, and a partition plate 2281 is provided in the gas grid 228, and the partition plate 2281 separates the gas grid 228 to form the steam chamber 223 and the exhaust chamber 224, a steam chamber 223 is correspondingly provided with a steam inlet 2231, and an exhaust chamber 224 is correspondingly provided with an exhaust port 2241, and each steam inlet 2231 is connected to the steam generator 3.

[0033] The steam generator 3 is used to generate steam and is connected to the steam chamber 223 ; the positive and negative pressure generator 4 is used to provide positive pressure or negative pressure and is connected to the air pressure chamber 212 ; popcorn grains are arranged in the silo 5 , and the silo 5 is connected to the injection port 227 .

[0034] The film conveying device 6 includes an output roller 61 and a recovery roller 62. The output roller 61 is arranged above the laminating assembly 1, and specifically the output roller 61 is installed with the first bracket 11. The recovery roller 62 is arranged below the laminating assembly 1, and specifically the recovery roller 62 is installed with the first bracket 11. The film material roll is arranged on the output roller 61. The film material output by the film roll passes between the concave mold 21 and the convex mold 22 and then is wound around the recovery roller 62 for recovery. The output roller 61 and the recovery roller 62 are driven by a servo motor respectively.

[0035] The conveyor belt 7 passes under the pressing assembly 1 , and receives the sole blank dropped from the pressing assembly 1 and delivers it out.

[0036] The first embodiment of the present application is further described below with reference to a specific process of forming.

[0037] A sole forming process, the steps are as follows: S1. The output roller 61 and the recovery roller 62 cooperate to convey the film material, the film material is between the concave mold 21 and the convex mold 22, and the projection of the film material toward the concave mold 21 covers the range of the cavity 211, and the film material is close to the surface of the concave mold 21. After the required new film material is between the concave mold 21 and the convex mold 22, the film material stops conveying; S2. The transverse driving mechanism 13 drives the first bracket 11 to move transversely, so that the first bracket 11 moves toward the second bracket 12 until the punch 22 is close to the film material. The steam generator 3 introduces steam into the steam chamber 223 of the punch 22, and the steam is blown toward the film material through the corresponding second air holes 222. The film material is partially softened by heat. At this time, the air pressure of the input steam is relatively low, and the steam mainly plays a heating role, and the air pressure will not blow the film material; S3. The positive and negative pressure generator 4 draws air into the air pressure cavity 212 of the die 21 to form a negative pressure state in the air pressure cavity 212. The negative pressure of the third air hole 215 adsorbs the film material to the surface of the die 21. The negative pressure suction of the first air hole 213 causes the film material to be sucked into the cavity 211. Since the film material at this position is softened by heat and has ductility, the film material sucked into the cavity 211 is deformed and evenly adheres to the inner wall of the cavity 211. S4. The lateral drive mechanism 13 drives the first bracket 11 to move closer to the second bracket 12 again, until the punch 22 closes the cavity 211, and the silo 5 is injected and filled with popcorn particles into the cavity 211 through the injection port 227; S4. The steam generator 3 passes steam into the steam chamber 223 of the punch 22. The steam has a high pressure. The steam enters the cavity 211 through the second air hole 222 corresponding to the steam chamber 223, and then is discharged from the second air hole 222 corresponding to the exhaust chamber 224. The steam heats the popcorn particles and makes their surface sticky. S5. The transverse driving mechanism 13 drives the first bracket 11 to move toward the second bracket 12 again until the male mold 22 and the female mold 21 are combined and pressed. During this process, the cutter 225 is placed in the cutting groove 214 to cut the film material, and the film material in the cavity 211 is cut independently. At the same time, the electric heating wire 226 in the cutter 225 works to heat the cutter 225, further ensuring reliable cutting of the film material; the insert 221 is pressed toward the cavity 211, and the popcorn particles are pressed and bonded to each other to form a sole blank, and the cut film material in the cavity 211 is bonded and covered on the bottom and side surfaces of the sole blank; S6. The first bracket 11 and the second bracket 12 are separated and moved until there is a discharge gap between the male mold 22 and the female mold 21. The positive and negative pressure generator 4 introduces positive pressure into the air pressure chamber 212. First, a positive pressure of relatively low pressure is passed. The positive pressure is mainly blown out from the third air hole 215. The air pressure can separate the film material from the surface of the concave film 21. Then, an instantaneous high-pressure gas is introduced, which is mainly blown out from the first air hole 213. The first air hole 213 generates a thrust to push the sole blank out of the cavity 211. The sole blank falls out through the discharge gap, falls onto the conveyor belt 7, and is sent out by the conveyor belt 7. S7. The output roller 61 rotates in coordination with the recovery roller 62 to reel the cut portion of the film material into the recovery roller 62, and the process returns to step 1 to repeat the next round of the sole forming process.

[0038] refer to Figure 7 As shown, the second embodiment is different from the first embodiment in that the second embodiment divides the air pressure chamber 212 into a first chamber 2121 and a second chamber 2123 which are independent of each other. The first chamber 2121 is provided with a first pipe opening 2122, and the second chamber 2123 is provided with a second pipe opening 2124. The first pipe opening 2122 and the second pipe opening 2124 are respectively connected to the positive and negative pressure generator 4, and the positive and negative pressure generator 4 performs independent air pressure control on the first pipe opening 2122 and the second pipe opening 2124. Each first air hole 213 correspondingly penetrates into the first chamber 2121, and each third air hole 215 penetrates into the second chamber 2123.

[0039] The difference in the molding process of the second embodiment is that in S3, S3. The positive and negative pressure generator 4 draws air through the first pipe port 2121 and the second pipe port 2122, so that the first air hole 213 and the third air hole 215 generate negative pressure. The negative pressure of the third air hole 215 adsorbs the film material to the surface of the fitting die 21, and the negative pressure suction of the first air hole 213 causes the film material to be sucked into the cavity 211. Since the film material at this position is softened by heat and has ductility, the film material sucked into the cavity 211 is deformed and evenly fits the inner wall of the cavity 211. S6. The first bracket 11 and the second bracket 12 are separated and moved until there is a discharge gap between the male mold 22 and the female mold 21, and the positive and negative pressure generator 4 passes a positive pressure of a relatively small pressure through the second pipe opening 2122, and the air pressure blown out by the third air hole 215 can separate the film material from the surface of the concave film 21; the positive and negative pressure generator 4 passes an instantaneous positive high-pressure air through the first pipe opening 2121, and the first air hole 213 generates a thrust to push the sole blank out of the cavity 211, and the sole blank falls out through the discharge gap, falls onto the conveyor belt 7, and is sent out by the conveyor belt 7.

[0040] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A film-coating integrated molding machine suitable for popcorn soles, characterized in that: include: The pressing assembly comprises a first bracket and a second bracket, wherein the first bracket and the second bracket can be moved closer or farther away; The mold is installed in the pressing assembly, including a female mold and a male mold, the female mold is installed on the first bracket, and the male mold is installed on the second bracket. The female mold is provided with a recessed cavity on one side, and a pneumatic cavity is provided in the female mold. A first air hole penetrating to the pneumatic cavity is opened in the cavity. The female mold is provided with a cutting groove arranged around the outside of the cavity. A protruding insert is provided on one side of the male mold, and the insert is adapted to the shape of the cavity and arranged relatively. A plurality of second air holes passing through the insert are opened on the male mold, and the male mold is provided with a steam cavity and an exhaust cavity, a part of the second air holes corresponds to the steam cavity, and another part of the second air holes corresponds to the exhaust cavity. The male mold is provided with a cutter arranged around the insert, and the cutter corresponds to the cutting groove. The male mold is provided with an injection port penetrated by the insert; A steam generator, used to generate steam and connected to the steam chamber; A positive and negative pressure generator, which is used to provide positive pressure or negative pressure and is connected to the air pressure chamber; A silo, wherein popcorn particles are arranged in the silo, and the silo is connected to the injection port; The film conveying device comprises an output roller and a recovery roller, wherein the output roller is arranged above the laminating assembly, and the recovery roller is arranged below the laminating assembly. The film material roll is arranged on the output roller, and the film material output from the film material roll passes between the concave die and the convex die and is then wound around the recovery roller for recovery.

2. A film-coating integrated molding machine suitable for popcorn soles according to claim 1, characterized in that: The male mold also includes an electric heating wire. The cutter is provided with a channel arranged along the extension direction of the cutter. The electric heating wire is passed through the channel and contacts the cutter. The electric heating wire is used to heat the cutter.

3. The film-coating integrated molding machine suitable for popcorn soles according to claim 1, characterized in that: The concave mold is provided with a plurality of third air holes on one side where the mold cavity is provided. The third air holes are distributed outside the mold cavity and penetrate into the air pressure cavity.

4. The film-coating integrated molding machine suitable for popcorn soles according to claim 3, characterized in that: The air pressure chamber is divided into a first chamber and a second chamber which are independent of each other. The first chamber is provided with a first pipe opening, and the second chamber is provided with a second pipe opening. The first pipe opening and the second pipe opening are respectively connected to the positive and negative pressure generators, and the positive and negative pressure generators perform independent air pressure control on the first pipe opening and the second pipe opening. Each of the first air holes correspondingly penetrates into the first chamber, and each of the third air holes penetrates into the second chamber.

5. The film-coating integrated molding machine suitable for popcorn soles according to claim 1, characterized in that: The mold also includes a sealing plate and an air equalizing pipe. The sealing plate is closed and connected to the die and an air pressure cavity is formed between the sealing plate and the die. An air pressure port is provided on the sealing plate. The air equalizing pipe is provided in the air pressure cavity. The air equalizing pipe is arranged in a circular shape and has a plurality of air ports distributed on the air equalizing pipe. One end of the air equalizing pipe is connected to the air pressure port.

6. The film-coating integrated molding machine suitable for popcorn soles according to claim 1, characterized in that: The punch comprises a plurality of groups of gas grids, wherein the gas grids are installed on the opposite side of the insert block, and a partition plate is provided inside the gas grids, and the partition plate separates the gas grids into the steam chamber and the exhaust chamber. A steam chamber is provided with a steam inlet, and an exhaust chamber is provided with an exhaust port, and each steam inlet is connected to a steam generator.

7. The film-coating integrated molding machine suitable for popcorn soles according to claim 1, characterized in that: The pressing assembly also includes a transverse driving mechanism, which is connected to the first bracket and drives the first bracket to move laterally. The second bracket is fixedly arranged, a plurality of concave molds are arranged in an array on the first bracket, a plurality of convex molds are arranged in an array on the second bracket, and one concave mold corresponds to one convex mold laterally.

8. The film-coating integrated molding machine suitable for popcorn soles according to claim 1, characterized in that: It also includes a conveyor belt, which passes through the bottom of the pressing assembly and receives the sole blank dropped from the pressing assembly and sends it out.

9. The film-coating integrated molding machine suitable for popcorn soles according to claim 1, characterized in that: The output roller and the recovery roller are driven by a servo motor respectively.

10. A sole forming process, characterized in that: A film-coating integrated molding machine suitable for popcorn soles according to any one of claims 1 to 9, the steps are as follows: S1. The output roller and the recovery roller cooperate to convey the film material, so that the film material is between the concave mold and the convex mold and the projection of the film material toward the concave mold covers the cavity, and the film material stops conveying; S2. The first bracket and the second bracket move closer to each other until the punch is close to the film material, the steam generator passes steam into the steam chamber of the punch, and the steam is blown toward the film material through the corresponding second pores, and the film material is softened by heat; S3. The positive and negative pressure generator draws air into the air pressure cavity of the concave mold to form a negative pressure state in the air pressure cavity. The first air hole generates negative pressure suction, and the film material is sucked into the cavity. Since the film material softens and becomes ductile when heated, the film material sucked into the cavity is deformed and evenly adheres to the inner wall of the cavity. S4. The first bracket and the second bracket move closer to each other until the punch closes the cavity, and the popcorn particles are injected into the cavity through the injection port and filled; S4. The steam generator passes steam into the steam cavity of the punch, and the steam enters the cavity through the second pore corresponding to the steam cavity, and then is discharged from the second pore corresponding to the exhaust cavity, and the steam passes through the popcorn particles and heats the surface thereof to produce stickiness; S5. The first bracket and the second bracket move close to each other until the male and female molds are combined and pressed tightly. During this process, the cutter is placed in the cutting groove to cut the film material, and the film material in the cavity is cut independently; the insert is pressed toward the cavity, and the popcorn particles are squeezed and bonded to each other to form a sole blank, and the film material is bonded and covered on the bottom and side surfaces of the sole blank; S6. The first bracket is separated from the second bracket and moved until there is a discharge gap between the male and female molds, the positive and negative pressure generators are fed into the air pressure chamber with positive pressure, the first pores generate thrust to push the sole blank out of the cavity, and the sole blank falls out through the discharge gap; S7. The output roller and the recovery roller rotate in coordination, and the cut part of the film material is rolled into the recovery roller, and the process returns to step 1, and the next round of the sole forming process is repeated.

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