TPU (thermoplastic polyurethane) film extrusion device
By introducing adjustment and auxiliary devices into the TPU film extrusion unit, the problems of uneven feeding and equipment vibration caused by material inrush were solved, achieving uniform material feeding and stable equipment operation, ensuring the thickness uniformity of TPU film and the stability of production, and preventing cross-contamination of materials.
Patent Information
- Application Number
- CN202423187488.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In TPU film production, a large amount of material may rush into the feed port of the extrusion unit in a short period of time, resulting in excessively fast and uneven feeding speed. This causes uneven stress on the extruder screw, resulting in abnormal vibration and wear, and may even cause screw deformation or breakage. At the same time, the material may accumulate and form bridges in the feed hopper, affecting production stability and product quality.
A TPU film extrusion device was designed, comprising an adjustment device and an auxiliary device. The adjustment device, through the cooperation of baffles and springs, achieves the isolation and buffering of the internal space of the feed hopper, ensuring uniform material feeding; the auxiliary device accelerates material flow through a servo motor and a striking ball, and, combined with the design of a lead screw and clamping plate, facilitates the disassembly and cleaning of the feed hopper.
It achieves uniform material feeding, ensures stable operation of the extrusion unit, prevents abnormal screw vibration and wear, extends equipment life, prevents cross-contamination of materials, and improves product quality consistency.
Smart Images
Figure CN223545728U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of TPU production equipment technology, and in particular to a TPU film extrusion device. Background Technology
[0002] With the continuous development of materials science, thermoplastic polyurethane has been widely used in various fields due to its excellent physical properties and wide applicability. In the production process of TPU, the film extrusion device plays a crucial role. This device can not only realize the efficient molding of TPU materials, but also ensure the quality and consistency of the products.
[0003] Regarding the aforementioned and existing related technologies, the inventors believe that the following defects often exist: In some large-scale TPU film production, materials may be fed through high-speed conveyor devices such as conveyor belts. Traditional extruders do not have baffles for buffering, and materials may rush into the feed inlet of the extruder in a short period of time, resulting in excessively fast and uneven feeding speeds. This may cause uneven stress on the extruder screw, leading to abnormal vibration and wear, and in severe cases, even screw deformation or breakage, greatly affecting the service life and operational stability of the extruder. Materials may also accumulate and form bridges in the feed hopper, i.e., the material forms an arched structure below the feed inlet, preventing the material from falling normally. Therefore, a TPU film extrusion device is proposed to address the above problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies where a large amount of material may flood into the feed inlet of the extrusion device in a short period of time, resulting in excessively fast and uneven feeding speed. This may cause uneven stress on the extruder screw, leading to abnormal vibration and wear, and in severe cases, even screw deformation or breakage. Therefore, this invention proposes a TPU film extrusion device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a TPU film extrusion device, comprising an extruder device body, wherein an arc surface of the extruder device body is provided with an installation hole, a feed bin is slidably connected to the inner surface of the installation hole of the extruder device body, a sliding hole is provided on the arc surface of the feed bin, an adjustment device is provided on the inner wall of the sliding hole of the feed bin, the adjustment device includes a baffle, the baffle is slidably connected to the inner wall of the feed bin, an L-shaped plate is fixedly connected to one side of the baffle, a long rod is slidably inserted into the L-shaped plate, one end of the long rod is fixedly connected to the feed bin, and a stop block is fixedly connected to one end of the long rod.
[0006] The effect achieved by the above components is as follows: by setting the adjustment device, the internal space of the feeding hopper is isolated, so as to buffer the material in the feeding hopper, make the internal feeding more uniform, which is conducive to the stable operation of the extrusion device and ensures that the produced TPU film has a uniform thickness.
[0007] Preferably, a spring is fitted onto the arc surface of the long rod, and the two ends of the spring are fixedly connected to the L-shaped plate and the feed hopper, respectively.
[0008] The effect achieved by the above components is to maintain the position of the baffle through the elastic force of the spring itself, preventing the baffle from sliding and affecting the normal feeding of materials.
[0009] Preferably, a setting plate is fixedly connected to the surface of the L-shaped plate, and the size of the baffle is adapted to the size of the sliding hole of the feed hopper.
[0010] The effect achieved by the above components is as follows: the push setting plate drives the L-shaped plate to slide on the arc surface of the long rod, and the L-shaped plate drives the baffle to slide on the inner wall of the feed hopper sliding hole, so that the operator can stably push the baffle to move.
[0011] Preferably, a fixing plate is fixedly connected to the arc surface of the extruder device body, a servo motor is fixedly connected to one side of the fixing plate, a placement plate is fixedly connected to the output end of the servo motor, and a striking ball is fixedly connected to one side of the placement plate. The striking ball is made of rubber.
[0012] The effect achieved by the above components is as follows: the servo motor is started, the servo motor drives the placement plate to rotate, and the placement plate drives the striking ball to continuously strike the feed hopper, thereby accelerating the flow of materials in the feed hopper.
[0013] Preferably, the arc surface of the extruder body is provided with an auxiliary device, which includes two mounting blocks. Both mounting blocks are fixedly connected to the arc surface of the extruder body. A lead screw is threaded into the mounting block, and one end of the lead screw is rotatably connected to a clamping plate. The clamping plate is semi-circular in shape.
[0014] The effect achieved by the above-mentioned components is that, by setting up auxiliary devices, the feeding hopper can be disassembled, so that workers can disassemble and clean the feeding hopper and prevent cross-contamination between different batches of materials.
[0015] Preferably, a limiting rod is slidably inserted into the mounting block, and one end of the limiting rod is fixedly connected to the clamping plate.
[0016] The effect achieved by the above components is that rotating the lead screw drives the clamping block to move, and the clamping block drives the limiting rod to slide within the mounting block, preventing the clamping block from rotating with the lead screw and improving the stability of the device.
[0017] Preferably, a handle is fixedly connected to one end of the lead screw, and a protective pad is fixedly connected to the surface of the clamping plate.
[0018] The effect achieved by the above components is as follows: rotating the handle drives the lead screw to rotate within the mounting block, the lead screw drives the clamping plate to move, and the clamping plate drives the protective pad to move, so that the operator can stably rotate the lead screw and accurately control the tightness of the feed hopper.
[0019] In summary, the beneficial effects of this utility model are as follows:
[0020] 1. In this utility model, by setting an adjustment device, the internal space of the feeding hopper is partitioned, so as to buffer the material in the feeding hopper, make the internal feeding more uniform, which is conducive to the stable operation of the extrusion device and ensures that the produced TPU film has a uniform thickness.
[0021] 2. In this utility model, by setting an auxiliary device, the feeding hopper can be disassembled, so that the staff can disassemble and clean the feeding hopper and prevent cross-contamination between different batches of materials. Attached Figure Description
[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0023] Figure 2 This is a schematic diagram of the adjusting device in this utility model;
[0024] Figure 3 This is a partial structural schematic diagram of the adjusting device in this utility model;
[0025] Figure 4 This is a schematic diagram of the auxiliary device in this utility model.
[0026] Legend: 1. Extruder body; 2. Feed hopper; 3. Adjustment device; 301. Baffle; 302. L-shaped plate; 303. Long rod; 304. Stop block; 305. Spring; 306. Setting plate; 307. Fixing plate; 308. Servo motor; 309. Placement plate; 310. Striking ball; 4. Auxiliary device; 41. Mounting block; 42. Lead screw; 43. Clamping plate; 44. Handle; 45. Limiting rod; 46. Protective pad. Detailed Implementation
[0027] Reference Figure 1As shown, this utility model provides a technical solution: a TPU film extrusion device, including an extruder body 1. An installation hole is provided on the arc surface of the extruder body 1. A feed bin 2 is slidably connected to the inner surface of the installation hole. A sliding hole is provided on the arc surface of the feed bin 2. An adjustment device 3 is provided on the inner wall of the sliding hole of the feed bin 2. By setting the adjustment device 3, the internal space of the feed bin 2 is isolated, so as to buffer the material in the feed bin 2, making the internal feeding more uniform, which is conducive to the stable operation of the extrusion device and ensures that the produced TPU film has a uniform thickness. An auxiliary device 4 is provided on the arc surface of the extruder body 1. By setting the auxiliary device 4, the feed bin 2 can be disassembled, so that the staff can disassemble and clean the feed bin 2, preventing cross-contamination between different batches of materials.
[0028] The specific settings and functions of its adjustment device 3 and auxiliary device 4 will be described in detail below.
[0029] Reference Figure 2 and Figure 3 As shown in this embodiment: the adjusting device 3 includes a baffle 301, which is slidably connected to the inner wall of the feeding hopper 2. An L-shaped plate 302 is fixedly connected to one side of the baffle 301. A long rod 303 is slidably inserted into the L-shaped plate 302. One end of the long rod 303 is fixedly connected to the feeding hopper 2, and a stop block 304 is fixedly connected to the other end of the long rod 303. A spring 305 is fitted onto the arc surface of the long rod 303. Both ends of the spring 305 are fixedly connected to the L-shaped plate 302 and the feeding hopper 2, respectively. The position of the baffle 301 is maintained by the elasticity of the spring 305 to prevent the baffle 301 from sliding and affecting the normal feeding of materials. A setting plate 306 is fixedly connected to the surface of the L-shaped plate 302. The size of the baffle 301 is adapted to the size of the sliding hole in the feeding hopper 2. The push plate 306 drives the L-shaped plate 302 to slide on the arc surface of the long rod 303. The L-shaped plate 302 drives the baffle 301 to slide on the inner wall of the sliding hole in the feed hopper 2, so that the operator can stably push the baffle 301 to move it. A fixing plate 307 is fixedly connected to the arc surface of the extruder body 1. A servo motor 308 is fixedly connected to one side of the fixing plate 307. A placement plate 309 is fixedly connected to the output end of the servo motor 308. A striking ball 310 is fixedly connected to one side of the placement plate 309. The striking ball 310 is made of rubber. When the servo motor 308 is started, it drives the placement plate 309 to rotate. The placement plate 309 drives the striking ball 310 to continuously strike the feed hopper 2, accelerating the flow of material in the feed hopper 2.
[0030] Reference Figure 4As shown, specifically, the auxiliary device 4 includes two mounting blocks 41, both of which are fixedly connected to the arc surface of the extruder body 1. A lead screw 42 is threaded into each mounting block 41, and a clamping plate 43 is rotatably connected to one end of the lead screw 42. The clamping plate 43 is semi-circular in shape. A limiting rod 45 is slidably inserted into each mounting block 41, and one end of the limiting rod 45 is fixedly connected to the clamping plate 43. Rotating the lead screw 42 moves the clamping block, causing the limiting rod 45 to slide within the mounting block 41, preventing the clamping block from rotating with the lead screw 42 and improving the stability of the device. A handle 44 is fixedly connected to one end of the lead screw 42, and a protective pad 46 is fixedly connected to the surface of the clamping plate 43. Rotating the handle 44 rotates the lead screw 42 within the mounting block 41, causing the lead screw 42 to move, which in turn moves the clamping plate 43, causing the protective pad 46 to move, allowing the operator to stably rotate the lead screw 42 and precisely control the tightness of the feed hopper 2.
[0031] Working principle: When the operator extrudes TPU, the extruder body 1 is started, and the material is continuously fed into the feed hopper 2. Then, the servo motor 308 is started, which drives the placement plate 309 to rotate. The placement plate 309 drives the striking ball 310 to continuously strike the surface of the feed hopper 2. When a short interruption is needed during the large-scale material feeding process, the setting plate 306 is pushed to drive the L-shaped plate 302 to slide on the arc surface of the long rod 303. The L-shaped plate 302 drives the baffle 301 to slide on the inner wall of the sliding hole of the feed hopper 2. At this time, the baffle 301 isolates the internal space of the feed hopper 2, achieving the effect of isolating the internal space of the feed hopper 2, so as to isolate and buffer the material in the feed hopper 2, making the internal feeding more uniform, which is conducive to the stable operation of the extrusion device and ensures that the produced TPU film has a uniform thickness.
[0032] When staff need to change materials, the feed hopper 2 must first be disassembled to prevent material contamination. The handle 44 is turned to drive the lead screw 42 to rotate within the mounting block 41. The lead screw 42 drives the clamping plate 43 to move, and the clamping plate 43 drives the limit rod 45 to slide within the mounting block 41. The clamping plate 43 drives the protective pad 46 to move until it no longer contacts the feed hopper 2. Finally, the feed hopper 2 is pulled away from the inner wall of the mounting hole of the extruder body 1, thus achieving the effect of disassembling the feed hopper 2. This allows staff to disassemble and clean the feed hopper 2, preventing cross-contamination between different batches of materials.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A TPU film extrusion apparatus, comprising an extruder body (1), characterized in that: The extruder body (1) has an arc-shaped mounting hole. The inner surface of the mounting hole of the extruder body (1) is slidably connected to a feed bin (2). The arc-shaped surface of the feed bin (2) has a sliding hole. The inner wall of the sliding hole of the feed bin (2) is provided with an adjustment device (3). The adjustment device (3) includes a baffle (301). The baffle (301) is slidably connected to the inner wall of the feed bin (2). An L-shaped plate (302) is fixedly connected to one side of the baffle (301). A long rod (303) is slidably inserted into the L-shaped plate (302). One end of the long rod (303) is fixedly connected to the feed bin (2). A stop block (304) is fixedly connected to one end of the long rod (303).
2. The TPU film extrusion apparatus according to claim 1, characterized in that: The arc surface of the long rod (303) is fitted with a spring (305), and the two ends of the spring (305) are fixedly connected to the L-shaped plate (302) and the feed bin (2) respectively.
3. The TPU film extrusion apparatus according to claim 1, characterized in that: The surface of the L-shaped plate (302) is fixedly connected to a setting plate (306), and the size of the baffle (301) is adapted to the size of the sliding hole of the feed hopper (2).
4. The TPU film extrusion apparatus according to claim 1, characterized in that: A fixing plate (307) is fixedly connected to the arc surface of the extruder device body (1). A servo motor (308) is fixedly connected to one side of the fixing plate (307). A placement plate (309) is fixedly connected to the output end of the servo motor (308). A striking ball (310) is fixedly connected to one side of the placement plate (309). The striking ball (310) is made of rubber.
5. A TPU film extrusion apparatus according to claim 1, characterized in that: An auxiliary device (4) is provided on the arc surface of the extruder body (1). The auxiliary device (4) includes two mounting blocks (41). Both mounting blocks (41) are fixedly connected to the arc surface of the extruder body (1). A lead screw (42) is threaded into the mounting block (41). One end of the lead screw (42) is rotatably connected to a clamping plate (43). The clamping plate (43) is semi-circular in shape.
6. A TPU film extrusion apparatus according to claim 5, characterized in that: A limiting rod (45) is slidably inserted into the mounting block (41), and one end of the limiting rod (45) is fixedly connected to the clamping plate (43).
7. A TPU film extrusion apparatus according to claim 5, characterized in that: One end of the lead screw (42) is fixedly connected to a handle (44), and a protective pad (46) is fixedly connected to the surface of the clamping plate (43).