Embossing device for TPU (thermoplastic polyurethane) film

Abstract

The utility model discloses an embossing device for a TPU (thermoplastic polyurethane) film, which belongs to the technical field of TPU film embossing and comprises a concave frame, a first roll shaft is rotatably mounted at the top of one side of the rear side in the concave frame through a bearing, and a first motor is fixedly mounted at the position, corresponding to the first roll shaft, of the rear side of the concave frame. A rotating shaft at the output end of the first motor is fixedly connected with the rear side end of the first roller shaft, and a guide roller is rotationally mounted in the center of the rear side of the interior of the concave frame through a bearing. According to the technical scheme, a second electric hydraulic push rod, a second concave mounting frame and an adjusting roller are arranged, a TPU film passes through the position below the adjusting roller, if the tightness degree of the TPU film is not enough in the transmission process, the second electric hydraulic push rod can be directly controlled to drive the adjusting roller in the second concave mounting frame to move downwards, and therefore the TPU film can be tightened; and the tightness of the TPU film in the transmission process is improved, and the situation that the embossing effect is affected due to the insufficient tightness of the TPU film is avoided.

Description

Technical Field

[0001] This utility model relates to the field of TPU film embossing technology, and more specifically, to an embossing device for TPU film. Background Technology

[0002] TPU, or thermoplastic TPU elastomer, is made by extrusion compounding of MDI containing NCO functional groups and POLYOL and 1,4-BG containing OH functional groups. Due to its good elasticity, excellent physical properties, and good mechanical strength, it is widely used in injection molding, extrusion, calendering, and solution-based resin processing. It is a commonly used plastic material in the plastics processing industry, and its products cover a wide range of industrial applications and consumer necessities. During TPU film processing, the surface needs to be embossed according to the requirements of the mounting, which requires the use of TPU film. Embossing devices for TPU films, while existing designs, suffer from several drawbacks in practical use. For example, the aforementioned method uses a vertically shifting embossing plate to emboss the passing TPU film, resulting in low efficiency and interruptions in the embossing pattern, affecting the final effect and hindering usability. Furthermore, existing TPU film embossing devices lack a cleaning mechanism, making it impossible to clean the TPU film surface. Dust on the surface can negatively impact the embossing quality. Additionally, the lack of a tension adjustment mechanism for the TPU film means that insufficient tension will also affect the embossing quality. Therefore, we propose an embossing device for TPU films. Utility Model Content

[0003] The purpose of this invention is to provide an embossing device for TPU film to solve the problems mentioned in the background art.

[0004] An embossing device for TPU film includes a concave frame. A first roller shaft is rotatably mounted on the top of the rear side of the concave frame via a bearing. A first motor is fixedly mounted at a position corresponding to the first roller shaft on the rear side of the concave frame, and the rotation shaft of the output end of the first motor is fixedly connected to the rear end of the first roller shaft. A guide roller is rotatably mounted on the center of the rear side of the concave frame via a bearing, and a mating roller is rotatably mounted on the center of the rear side of the concave frame facing away from the first roller shaft via a bearing. The bottom of the guide roller is flush with the top of the mating roller. A first concave mounting frame is installed above the mating roller via a first electric hydraulic push rod, and an embossing roller is rotatably mounted inside the first concave mounting frame via a bearing. A third motor is fixedly mounted at the front end of the first concave mounting frame, and the rotating shaft at the output end of the third motor is fixedly connected to the front end of the embossing roller. A second roller shaft is rotatably mounted inside the concave frame at the bottom of the rear side facing the first roller shaft via a bearing, and a second motor is fixedly mounted at the position corresponding to the second roller shaft on the rear side of the concave frame, and the rotating shaft at the output end of the second motor is fixedly connected to the rear end of the second roller shaft.

[0005] A dust-collecting plate is fixedly installed on the rear side of the concave frame between the guide roller and the mating roller, and a fan is fixedly installed on the top of the concave frame. The input end of the fan is connected to the output end of the dust-collecting plate through a conduit. A collection box is fixedly installed on the top of the concave frame near the fan, and the output end of the fan is connected to the input end of the collection box through a conduit.

[0006] A second electro-hydraulic push rod is fixedly installed at the inner bottom of the concave frame, and a second concave mounting bracket is fixedly installed at the top of the second electro-hydraulic push rod, and an adjusting roller is movably installed at the inner top of the second concave mounting bracket.

[0007] As an optional solution to the technical solution of this application, welding rods are welded to the four corners of the bottom of the concave frame, and a base plate is welded to the bottom of the welding rods.

[0008] As an optional solution to the technical solution of this application, the bottom of the base plate is welded with casters at the four corners, and a brake lever is provided on the rear side of the casters.

[0009] As an optional solution to the technical solution of this application, the collection box is provided with an exhaust vent on one side, and a filter screen is provided at the port of the exhaust vent.

[0010] As an optional solution to the technical solution of this application, the top of the collection box is screwed on with a top cover, and the top cover is provided with anti-slip texture around its perimeter.

[0011] As an optional solution to the technical solution of this application, the dust collection plate is hollow inside, and the bottom of the dust collection plate is provided with at least two sets of equidistant dust collection ports.

[0012] As an optional solution to the technical solution of this application, the adjusting roller is located between the second roller shaft and the mating roller, and the embossing roller corresponds to the mating roller.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] 1. In the TPU film embossing process of this application, the TPU film is fixed to the first roller shaft, then passes through the guide roller and the mating roller in sequence, and finally the end of the TPU film is connected to the second roller shaft. Then, the first roller shaft and the second roller shaft are rotated synchronously to wind the TPU film on the first roller shaft onto the second roller shaft. During this process, the first electric hydraulic push rod is controlled to drive the embossing roller to move down, and the mating roller clamps the TPU film. The clamping degree can be adjusted according to the situation. Then, the third motor is controlled to drive the embossing roller to rotate. Therefore, during the TPU film transmission process, the pattern on the surface of the embossing roller will complete the embossing treatment of the TPU film surface, which can ensure the continuity of the embossing on the TPU film surface without interruption, greatly improving the performance of the device.

[0015] 2. The technical solution of this application, through the setting of a fan, a dust suction plate and a collection box, can control the operation of the fan during the TPU film transmission process, and then the dust suction plate will remove and clean the dust on the surface of the TPU film, ensuring the cleanliness of the TPU film surface, thereby ensuring the quality of subsequent embossing of the TPU film.

[0016] 3. The technical solution of this application, through the setting of a second electro-hydraulic push rod, a second concave mounting frame and an adjusting roller, allows the TPU film to pass under the adjusting roller. If the tension of the TPU film is insufficient during the transmission process, the second electro-hydraulic push rod can be directly controlled to drive the adjusting roller inside the second concave mounting frame to move downward, thereby tightening the TPU film, improving the tension of the TPU film during the transmission process, and avoiding the TPU film's insufficient tension affecting its embossing effect. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional view of the front view of an embossing device for a TPU film disclosed in an embodiment of this application;

[0018] Figure 2 This is a front view of an embossing device for a TPU film disclosed in an embodiment of this application;

[0019] Figure 3 This is a rear view of an embossing device for a TPU film disclosed in an embodiment of this application;

[0020] Figure 4 This is an enlarged structural diagram of part A in an embossing device for a TPU film disclosed in an embodiment of this application;

[0021] Figure 5 This is an enlarged structural diagram of part B in an embossing device for a TPU film disclosed in an embodiment of this application.

[0022] The following are the labels in the diagram: 1. Concave frame; 101. Welding rod; 102. Base plate; 103. Caster wheel; 104. Brake lever; 2. First roller shaft; 201. First motor; 3. Second roller shaft; 301. Second motor; 4. Guide roller; 5. Matching roller; 6. First electro-hydraulic push rod; 601. First concave mounting bracket; 602. Embossing roller; 603. Third motor; 7. Dust suction plate; 701. Dust suction port; 8. Fan; 9. Collection box; 901. Exhaust port; 902. Filter cloth; 903. Top cover; 10. Second electro-hydraulic push rod; 1001. Second concave mounting bracket; 1002. Adjusting roller. Detailed Implementation

[0023] This utility model provides a technical solution:

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, an embossing device for TPU film includes a concave frame 1. Welding rods 101 are welded to the four corners of the bottom of the concave frame 1, and a base plate 102 is welded to the bottom of each welding rod 101. The welding rods 101 and the base plate 102 provide fixed support for the device. Universal wheels 103 are welded to the four corners of the bottom of the base plate 102, and a brake lever 104 is provided on the rear side of each universal wheel 103. The universal wheels 103 facilitate device displacement, and the brake lever 104 is used to brake the universal wheels 103. The universal wheels 103 with brake levers 104 are an existing structure and will not be described in detail here. A first roller shaft 2 is rotatably mounted on the top of the rear side of the interior of the concave frame 1 via a bearing. The TPU film is fixed to the first roller shaft 2, and the concave frame 1... A first motor 201 is fixedly installed at the rear side of the concave frame 1, corresponding to the position of the first roller shaft 2. The first motor 201, second motor 301, and third motor 603 are all model YS; this is just an example and can be replaced as needed. The rotating shaft at the output end of the first motor 201 is fixedly connected to the rear end of the first roller shaft 2, allowing the first motor 201 to drive the first roller shaft 2 to rotate. A guide roller 4 is rotatably installed at the center of the rear side inside the concave frame 1 via a bearing. The guide roller 4 is used to guide the TPU film. A mating roller 5 is rotatably installed at the center of the rear side of the concave frame 1, opposite to the first roller shaft 2, via a bearing. The bottom of the guide roller 4 is flush with the top of the mating roller 5. While guiding the TPU film, it can also be used with the embossing roller 602 to emboss the TPU film. Inside the concave frame 1, above the mating roller 5, a first concave mounting bracket 601 is mounted via a first electro-hydraulic push rod 6. Inside the first concave mounting bracket 601, the embossing roller 602 is rotatably mounted via bearings. The embossing roller 602 has a pattern and corresponds to the mating roller 5. The first electro-hydraulic push rod 6 can drive the embossing roller 602 inside the first concave mounting bracket 601 to descend. Then, the embossing roller 602, in conjunction with the mating roller 5, clamps the TPU film. The clamping of the TPU film by the embossing roller 602 and the mating roller 5 can be controlled by the extension and retraction of the first electro-hydraulic push rod 6. The depth of embossing can be controlled. A third motor 603 is fixedly installed at the front end of the first concave mounting frame 601, and the rotation shaft of the output end of the third motor 603 is fixedly connected to the front end of the embossing roller 602. The third motor 603 can drive the embossing roller 602 to rotate. A second roller 3 is rotatably installed on the bottom of the rear side of the concave frame 1 facing the first roller 2 through a bearing. The second roller 3 can roll up the embossed TPU film. A second motor 301 is fixedly installed at the position corresponding to the second roller 3 on the rear side of the concave frame 1, and the rotation shaft of the output end of the second motor 301 is fixedly connected to the rear end of the second roller 3. The second motor 301 is used to drive the second roller 3 to rotate.

[0025] In this embodiment, during the embossing process of the TPU film, the TPU film is first fixed to the first roller shaft 2, then one end of the TPU film is pulled out and passes through the guide roller 4 and the mating roller 5 in sequence, and finally connects to the second roller shaft 3. At this time, the first electro-hydraulic push rod 6 is controlled to drive the embossing roller 602 inside the first concave mounting bracket 601 to descend. Then, the embossing roller 602 and the mating roller 5 clamp the TPU film. The clamping of the TPU film by the embossing roller 602 and the mating roller 5 can be controlled by the extension and retraction of the first electro-hydraulic push rod 6. The tightness of the embossing allows for control over the depth of the embossing. Simultaneously, the first motor 201, the second motor 301, and the third motor 603 are controlled to operate. At this time, the TPU film on the first roller 2 is released, and then the second roller 3 winds up the released TPU film. During this process, the embossing roller 602 rotates and works in conjunction with the cooperating roller 5 to complete the embossing process on the surface of the TPU film until all the TPU film is embossed. Therefore, the continuity of the embossing on the TPU film can be guaranteed without any interruption, greatly improving the performance of the device.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A dust-collecting plate 7 is fixedly installed on the rear side of the concave frame 1, between the guide roller 4 and the mating roller 5. The dust-collecting plate 7 is hollow inside, and its bottom has at least two sets of equidistant dust-collecting ports 701. The dust-collecting ports 701 are used to remove dust from the surface of the TPU film. A fan 8 is fixedly installed on the top of the concave frame 1. The fan 8 is model DF-4, which is only an example and can be replaced as needed. The input end of the fan 8 is connected to the output end of the dust-collecting plate 7 through a conduit. When the fan 8 is working, the dust-collecting ports 701 generate suction. A dust-collecting plate 7 is fixedly installed on the top of the concave frame 1 near the fan 8. There is a collection box 9, and the output end of the fan 8 is connected to the input end of the collection box 9 through a duct. The collection box 9 can store the absorbed dust. There is an exhaust port 901 on one side of the collection box 9, and a filter cloth 902 is provided at the port of the exhaust port 901. The exhaust port 901 is used for discharge, and the filter cloth 902 filters the dust and keeps it inside the collection box 9. A top cover 903 is screwed on the top of the collection box 9. After opening the top cover 903, the dust inside the collection box 9 can be treated. The top cover 903 has anti-slip texture around its perimeter to ensure the stability of the top cover 903 when it is screwed on.

[0027] In this embodiment, when the device is working, the fan 8 can be controlled to work simultaneously. At this time, the dust suction port 701 generates suction to remove dust from the surface of the TPU film, ensuring the quality of subsequent TPU film embossing. The absorbed dust enters the collection box 9 for centralized storage.

[0028] like Figure 1 and Figure 2As shown, a second electro-hydraulic push rod 10 is fixedly installed at the bottom inner side of the concave frame 1, and a second concave mounting bracket 1001 is fixedly installed at the top of the second electro-hydraulic push rod 10. An adjusting roller 1002 is movably installed at the top inner side of the second concave mounting bracket 1001. The adjusting roller 1002 is located between the second roller shaft 3 and the mating roller 5. When the TPU film passes under the adjusting roller 1002, the second electro-hydraulic push rod 10 can drive the adjusting roller 1002 to descend and tighten the TPU film.

[0029] In this embodiment, if the TPU film is not tight enough during the embossing process of the device, the second electric hydraulic push rod 10 can be controlled to drive the adjusting roller 1002 to descend, thereby tightening the TPU film and avoiding the embossing effect caused by insufficient tension of the TPU film.

Claims

1. An embossing device for a TPU film, comprising a concave frame (1), characterized in that: The top of the rear side of the concave frame (1) is rotatably mounted on a first roller shaft (2) via a bearing. A first motor (201) is fixedly mounted at the position corresponding to the first roller shaft (2) on the rear side of the concave frame (1). The rotating shaft of the output end of the first motor (201) is fixedly connected to the rear end of the first roller shaft (2). A guide roller (4) is rotatably mounted on the center of the rear side of the concave frame (1) via a bearing. A mating roller (5) is rotatably mounted on the center of the rear side of the concave frame (1) facing away from the first roller shaft (2) via a bearing. The bottom of the guide roller (4) is flush with the top of the mating roller (5). The concave frame (1) is located above the mating roller (5) via a first electric hydraulic system. The push rod (6) is equipped with a first concave mounting bracket (601), and the first concave mounting bracket (601) is rotatably mounted with an embossing roller (602) through a bearing. The front end of the first concave mounting bracket (601) is fixedly mounted with a third motor (603), and the rotating shaft of the output end of the third motor (603) is fixedly connected to the front end of the embossing roller (602). The bottom of the concave frame (1) facing the first roller shaft (2) is rotatably mounted with a second roller shaft (3) through a bearing. The second motor (301) is fixedly mounted at the position corresponding to the second roller shaft (3) on the rear side of the concave frame (1), and the rotating shaft of the output end of the second motor (301) is fixedly connected to the rear end of the second roller shaft (3). A dust-collecting plate (7) is fixedly installed on the rear side of the concave frame (1) between the guide roller (4) and the mating roller (5), and a fan (8) is fixedly installed on the top of the concave frame (1). The input end of the fan (8) is connected to the output end of the dust-collecting plate (7) through a conduit. A collection box (9) is fixedly installed on the top of the concave frame (1) near the fan (8), and the output end of the fan (8) is connected to the input end of the collection box (9) through a conduit. The inner bottom of the concave frame (1) is fixedly installed with a second electric hydraulic push rod (10), and the top of the second electric hydraulic push rod (10) is fixedly installed with a second concave mounting bracket (1001), and the inner top of the second concave mounting bracket (1001) is movably installed with an adjusting roller (1002).

2. The embossing device for a TPU film according to claim 1, characterized in that: The concave frame (1) has welding rods (101) welded to the four corners of its bottom, and a base plate (102) is welded to the bottom of the welding rods (101).

3. The embossing device for a TPU film according to claim 2, characterized in that: The bottom of the base plate (102) is welded with casters (103) at the four corners, and a brake lever (104) is provided on the rear side of the casters (103).

4. The embossing device for a TPU film according to claim 1, characterized in that: The collection box (9) has an exhaust vent (901) on one side, and a filter cloth (902) is provided at the port of the exhaust vent (901).

5. The embossing device for a TPU film according to claim 1, characterized in that: The top of the collection box (9) is screwed with a top cover (903), and the top cover (903) has anti-slip texture around its perimeter.

6. The embossing device for a TPU film according to claim 1, characterized in that: The vacuum plate (7) is hollow inside, and the bottom of the vacuum plate (7) is provided with at least two sets of equidistant vacuum ports (701).

7. The embossing device for a TPU film according to claim 1, characterized in that: The adjusting roller (1002) is located between the second roller shaft (3) and the mating roller (5), and the embossing roller (602) corresponds to the mating roller (5).

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