EVA adhesive film production equipment and method

Abstract

The application discloses an EVA adhesive film production equipment and method, which comprises a rack, an extrusion device is installed on the rack, a forming rod is movably connected in the extrusion device, a first screw rod of the extrusion device is sleeved on the forming rod, an air cooling device is arranged at one end of the forming rod, an EVA adhesive recovery device is arranged in the rack, and an EVA adhesive film cutting device is arranged on one section of the rack; the forming rod is attached with 1-3 mm through the change part and the extrusion part, the air cooling device can scrape the EVA adhesive layer to 0.1-0.8 mm, so that the EVA adhesive layer is uniformly coated, the EVA adhesive layer can be rapidly cooled under the action of the air cooling device, the cooling effect is good due to the air cooling mode, the cooling is uniform, the EVA adhesive scraped off in the connecting part can be transported into the extrusion device by the EVA adhesive recovery device, so that the utilization rate of the EVA adhesive is improved through recycling, and the EVA adhesive film attached to the forming rod is moved through the stripping ring, so that the adhesive film is not subjected to external force in the production process and stress is generated.

Description

Technical Field

[0001] This invention relates to the field of EVA film production technology, specifically to an EVA film production equipment and method. Background Technology

[0002] The existing EVA film production process commonly uses the casting process, which requires multiple castings during production. However, casting generates film pressure, necessitating a stress relief process before the winding equipment. To address these issues, we propose an EVA film production equipment and method. Summary of the Invention

[0003] The purpose of this invention is to provide an EVA film production equipment and method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an EVA film production equipment and method, comprising a frame, an extrusion device mounted on the frame, a forming rod movably connected inside the extrusion device, a first spiral rod of the extrusion device sleeved on the forming rod, an air cooling device at one end of the forming rod, an EVA adhesive recycling device inside the frame, an EVA film cutting device at one section of the frame, and a power device for driving the forming rod to move on the frame.

[0005] Preferably, the extrusion equipment includes a housing fixedly connected to and disposed on the frame, the output end of the housing is divided into a changing section and an extrusion section, the diameter of the changing section gradually decreases, and the extrusion section is coaxial with the forming rod and the distance between them is 1-3mm.

[0006] Preferably, the first spiral rod passes through one side of the housing, and one end of the first spiral rod is connected to the EVA adhesive recycling equipment via belt drive / chain drive. A feed box is fixedly connected to the housing, and several heating modules are installed on the housing.

[0007] Preferably, the frame is provided with a connecting part, one side of which is connected to the output end of the extrusion equipment and the other side is connected to the air cooling equipment. The air cooling equipment, the extrusion equipment and the forming rod are coaxial, and the connecting part is connected to the EVA adhesive recycling equipment.

[0008] Preferably, the EVA adhesive recycling equipment includes a recycling chamber disposed within the frame, a second spiral rod rotatably connected to the recycling chamber, one end of the second spiral rod being fixedly connected to a motor, and the other end being connected to the first spiral rod via belt drive / chain drive. The EVA adhesive recycling equipment is connected to the extrusion equipment, and a plurality of heating modules are installed in the recycling chamber.

[0009] Preferably, the air-cooling device includes a block fixedly connected to the frame, the block having a scraping part and a condensation part, the distance between the scraping part and the forming rod being 0.1-0.8mm, the distance between the condensation part and the forming rod being 1-5mm, and the block being equipped with two air valves.

[0010] Preferably, the forming rod is provided with a condensation channel and a pressure chamber, and valves communicating with the condensation channel are installed at both ends of the forming rod;

[0011] The power unit includes a pneumatic rod fixedly connected to and mounted on the frame. The pneumatic rod is slidably connected to the pneumatic chamber and is sealed. One end of the pneumatic rod is connected to the pneumatic system.

[0012] Preferably, the EVA film cutting device includes a rotating rod rotatably connected to and disposed at one end of the frame, the other end of the rotating rod being connected to the frame via a tension spring, and the rotating rod being rotatably connected to a disc-shaped blade.

[0013] Preferably, a fixing plate is fixedly connected to the ground, and a peeling ring is fixedly connected inside the fixing plate. The peeling ring is slidably connected to the forming rod.

[0014] A method for producing EVA film includes the following steps:

[0015] Step 1: EVA balls are added into the shell through the feeding box, and the EVA balls are heated by the heating module.

[0016] Step 2: The EVA adhesive is squeezed into the changing section under the action of the first screw. The EVA adhesive adheres to the molding rod by 1-3mm through the changing section and the extrusion section.

[0017] Step 3: The pneumatic system drives the forming rod to move through the air rod. When the forming rod enters the air cooling equipment, the EVA adhesive layer attached to the forming rod will be scraped down to 0.1-0.8mm. The scraped EVA adhesive will enter the recycling chamber and be transported back into the housing by the second spiral rod.

[0018] Step 4: The EVA adhesive layer attached to the molding rod is cooled by an air-cooling device to form an EVA film;

[0019] Step 5: The EVA film will be cut by a disc-shaped blade.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The forming rod is coated with 1-3mm of EVA adhesive through the changing section and the extrusion section. The air cooling equipment can scrape the EVA adhesive layer down to 0.1-0.8mm, ensuring that the EVA adhesive layer is evenly applied. The EVA adhesive layer can be rapidly cooled under the action of the air cooling equipment. Due to the use of air cooling, the cooling effect is good and the cooling is uniform. The EVA adhesive scraped off in the connecting section is transported back to the extrusion equipment by the EVA adhesive recycling equipment. This recycling of EVA adhesive improves the utilization rate. The moving forming rod, through the peeling ring, allows the EVA adhesive film attached to the forming rod to be removed. The adhesive film is not subjected to external forces during the production process, thus avoiding stress. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the modified part and the extrusion part of the present invention;

[0024] Figure 3 This is a schematic diagram of the air-cooling device of the present invention;

[0025] Figure 4 This is a schematic diagram of the forming rod structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the peeling ring of the present invention;

[0027] In the picture:

[0028] 1. Frame; 11. Connecting part; 12. Air rod; 2. Extrusion equipment; 21. Housing; 211. Changing part; 212. Extrusion part; 3. Air cooling equipment; 31. Block; 32. Scraping part; 33. Condensation part; 34. Air valve; 4. Forming rod; 41. Condensation channel; 42. Air pressure chamber; 5. First screw rod; 6. Feed box; 7. EVA adhesive recovery equipment; 71. Second screw rod; 72. Recovery chamber; 8. EVA film cutting equipment; 81. Rotating rod; 82. Disc blade; 83. Fixing plate; 84. Peeling ring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Reference Figure 1 and Figure 5This embodiment of the present invention provides an EVA film production equipment and method, including a frame 1, an extrusion device 2 mounted on the frame 1, a forming rod 4 movably connected inside the extrusion device 2, a first spiral rod 5 of the extrusion device 2 sleeved on the forming rod 4, an air cooling device 3 provided at one end of the forming rod 4, an EVA adhesive recycling device 7 provided inside the frame 1, an EVA film cutting device 8 provided at one section of the frame 1, a power device for driving the forming rod 4 to move installed on the frame 1, a fixing plate 83 fixedly connected to the ground, a peeling ring 84 fixedly connected inside the fixing plate 83, and the peeling ring 84 slidably connected to the forming rod 4.

[0031] Specifically, the EVA balls are melted into EVA adhesive by the extrusion device 2. The extrusion device 2 attaches the EVA adhesive to the forming rod 4 by 1-3 mm. The air cooling device 3 scrapes the EVA adhesive layer down to 0.1-0.8 mm. The scraped-off EVA adhesive is transported back to the extrusion device 2 by the EVA adhesive recycling device 7. The EVA adhesive layer attached to the forming rod 4 solidifies rapidly under the action of air cooling. The EVA film cutting device 8 cuts the EVA film attached to the forming rod 4, so that the annular EVA film is cut into elongated EVA films. The peeling ring 84 peels off the EVA film attached to the forming rod 4. The elongated EVA film is then wound up by the winding device.

[0032] refer to Figure 2 The extrusion device 2 includes a housing 21 fixedly connected and disposed on the frame 1. The output end of the housing 21 is divided into a variable part 211 and an extrusion part 212. The diameter of the variable part 211 gradually decreases. The extrusion part 212 is coaxial with the forming rod 4 and the distance between them is 1-3 mm.

[0033] Specifically, under the action of the first spiral rod 5, the melted EVA adhesive will first fill the change part 211. As the diameter of the change part 211 gradually decreases, the EVA adhesive will fully fill the change part 211, which can make the EVA adhesive fully adhere to the molding rod 4.

[0034] refer to Figure 1The first spiral rod 5 passes through one side of the housing 21. One end of the first spiral rod 5 is connected to the EVA adhesive recycling device 7 via belt drive / chain drive. A feed box 6 is fixedly connected to the housing 21. Several heating modules are installed on the housing 21. The EVA adhesive recycling device 7 includes a recycling chamber 72 disposed in the frame 1. A second spiral rod 71 is rotatably connected to the recycling chamber 72. One end of the second spiral rod 71 is fixedly connected to a motor, and the other end is connected to the first spiral rod 5 via belt drive / chain drive. The EVA adhesive recycling device 7 is connected to the extrusion device 2. Several heating modules are installed in the recycling chamber 72.

[0035] Specifically, the air-cooling device 3 can scrape the EVA adhesive layer to 0.1-0.8mm. The scraped-off EVA adhesive will fall into the recycling chamber 72 and be transported back to the extrusion device 2 for reuse by the second screw rod 71. The heating module keeps the EVA adhesive in a melted state. The motor starts and drives the second screw rod 71 to rotate. The second screw rod 71 drives the first screw rod to rotate through belt drive / chain drive.

[0036] Figure 1 and Figure 3 The frame 1 is provided with a connecting part 11. One side of the connecting part 11 is connected to the output end of the extrusion device 2, and the other side is connected to the air cooling device 3. The air cooling device 3, the extrusion device 2 and the forming rod 4 are coaxial, and the connecting part 11 is connected to the EVA adhesive recycling device 7.

[0037] Specifically, the quality of the produced EVA film is related to the processing precision. The air cooling device 3, the extrusion device 2, and the forming rod 4 are coaxial, so that the EVA adhesive can be evenly attached to the forming rod 4. The air cooling device 3 can scrape the EVA adhesive to 0.1-0.8mm.

[0038] refer to Figure 3 and Figure 4 The air-cooling device 3 includes a block 31 fixedly connected to the frame 1. The block 31 has a scraping part 32 and a condensation part 33. The distance between the scraping part 32 and the forming rod 4 is 0.1-0.8 mm, and the distance between the condensation part 33 and the forming rod 4 is 1-5 mm. The block 31 is equipped with two air valves 34. The forming rod 4 has a condensation channel 41 and a pressure chamber 42. Valves communicating with the condensation channel 41 are installed at both ends of the forming rod 4. The power device includes an air rod 12 fixedly connected to and mounted on the frame 1. The air rod 12 is slidably connected to the pressure chamber 42 and has a sealing property. One end of the air rod 12 is connected to the air pressure system.

[0039] Specifically, the condensate water passing through the condensation channel 41 keeps the surface temperature of the molding rod 4 low, making it easy for the molding rod 4 to adhere to its surface. Since the distance between the scraper part 32 and the molding rod 4 is 0.1-0.8mm, the block 31 will scrape off most of the EVA adhesive, leaving a 0.1-0.8mm EVA film on the molding rod 4. Cold air enters the block 31 through the air valve 34, and the EVA film will solidify under the action of air cooling.

[0040] refer to Figure 1 and Figure 5 The EVA film cutting device 8 includes a rotating rod 81 rotatably connected to and disposed at one end of the frame 1. The other end of the rotating rod 81 is connected to the frame 1 via a tension spring. The rotating rod 81 is rotatably connected to a disc-shaped blade 82.

[0041] Specifically, the forming rod 4 reciprocates under the action of the air rod 12. EVA adhesive is attached to the extrusion section 212. The forming rod 4 moves to the scraping section 32, leaving an EVA film of 0.1-0.8 mm on the surface of the forming rod 4. It then moves to the coagulation section 33 and solidifies by air cooling. The disc blade 82 abuts against the forming rod 4 under the action of the tension spring. During the movement of the forming rod 4, a cutting line is cut out of the EVA film. Under the action of the peeling ring 84, the EVA film can be scraped off. The reciprocating motion of the forming rod 4 can continuously produce EVA film. The produced EVA film is wound up by a winding machine, which provides traction force to the EVA film.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An EVA film production equipment, characterized in that: Includes a frame (1), on which an extrusion device (2) is installed, and a forming rod (4) is movably connected inside the extrusion device (2). The first spiral rod (5) of the extrusion device (2) is sleeved on the forming rod (4). An air cooling device (3) is provided at one end of the forming rod (4). An EVA adhesive recycling device (7) is provided inside the frame (1). An EVA adhesive film cutting device (8) is provided at one end of the frame (1). A power device for driving the forming rod (4) to move is installed on the frame (1). The air-cooling device (3) includes a block (31) fixedly connected to the frame (1). The block (31) is provided with a scraping part (32) and a condensing part (33). The distance between the scraping part (32) and the forming rod (4) is 0.1-0.8 mm, and the distance between the condensing part (33) and the forming rod (4) is 1-5 mm. The block (31) is equipped with two air valves (34). The forming rod (4) is provided with a condensation channel (41) and a pressure chamber (42), and valves connecting the condensation channel (41) are installed at both ends of the forming rod (4); The power unit includes a pneumatic rod (12) fixedly connected to and mounted on the frame (1). The pneumatic rod (12) is slidably connected to the pneumatic chamber (42) and has a sealing property. One end of the pneumatic rod (12) is connected to the pneumatic system.

2. The EVA film production equipment according to claim 1, characterized in that: The extrusion equipment (2) includes a housing (21) fixedly connected and disposed on the frame (1). The output end of the housing (21) is divided into a variable part (211) and an extrusion part (212). The diameter of the variable part (211) gradually decreases. The extrusion part (212) is coaxial with the forming rod (4) and the distance between them is 1-3 mm.

3. The EVA film production equipment according to claim 2, characterized in that: The first spiral rod (5) passes through one side of the housing (21). One end of the first spiral rod (5) is connected to the EVA glue recycling equipment (7) through belt drive / chain drive. A feed box (6) is fixedly connected to the housing (21). Several heating modules are installed on the housing (21).

4. The EVA film production equipment according to claim 1, characterized in that: The frame (1) is provided with a connecting part (11). One side of the connecting part (11) is connected to the output end of the extrusion device (2), and the other side is connected to the air cooling device (3). The air cooling device (3), the extrusion device (2) and the forming rod (4) are coaxial, and the connecting part (11) is connected to the EVA glue recycling device (7).

5. The EVA film production equipment according to claim 1, characterized in that: The EVA adhesive recycling device (7) includes a recycling chamber (72) disposed in the frame (1). The recycling chamber (72) is rotatably connected to a second screw rod (71). One end of the second screw rod (71) is fixedly connected to a motor, and the other end is connected to the first screw rod (5) through belt drive / chain drive. The EVA adhesive recycling device (7) is connected to the extrusion device (2). Several heating modules are installed in the recycling chamber (72).

6. The EVA film production equipment according to claim 1, characterized in that: The EVA film cutting device (8) includes a rotating rod (81) rotatably connected to and disposed at one end of the frame (1), the other end of the rotating rod (81) being connected to the frame (1) via a tension spring, and a disc-shaped blade (82) being rotatably connected to the rotating rod (81).

7. The EVA film production equipment according to claim 6, characterized in that: A fixing plate (83) is fixedly connected to the ground, and a peeling ring (84) is fixedly connected inside the fixing plate (83). The peeling ring (84) is slidably connected to the forming rod (4).

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