TPU (thermoplastic polyurethane) car cover film raw material extruder

Abstract

The utility model is applicable to the technical field of car cover film processing, and provides a TPU car cover film raw material extruder which comprises an extrusion mechanism, a feeding mechanism and a discharging mechanism, the extrusion mechanism comprises an extrusion box, an extrusion shaft driven by a motor is rotatably mounted in the extrusion box, and car cover film raw materials are extruded through a plurality of extrusion fan blades on the extrusion shaft; the feeding mechanism comprises a feeding hopper, the feeding hopper is slidably connected with a lifting groove in the extrusion box, meanwhile, a lifting block slidably connected with the lifting groove is installed on the feeding hopper, a fixing block is installed on the inner wall of the lifting groove, and a connecting spring connected with the lifting block is installed on the fixing block. The feed hopper is driven to vibrate up and down to prevent raw materials from blocking the interior of the feed hopper; the discharging mechanism comprises an inclined discharging plate, a fixing plate is fixedly installed on the discharging plate, an adjusting screw rod driven by a motor is installed on the discharging plate through a fixing frame, the adjusting screw rod drives a limiting plate to move, and then the width of the car cover film is adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of car wrap film processing, and particularly relates to an extruder for TPU car wrap film raw materials. Background Art

[0002] In the current technical field of car wrap film processing, the TPU material, namely thermoplastic polyurethane elastomer, also known as thermoplastic polyurethane rubber, has excellent comprehensive properties such as high strength, high toughness, wear resistance, and oil resistance, and has good processing performance. It is widely used in industries such as national defense, medical treatment, and food, and can be used as the raw material for car wrap films. When processing TPU car wrap films, an extruder is required to extrude the TPU car wrap film raw materials.

[0003] The utility model patent with the publication number CN210651768U discloses an extruder for car film production, which includes a frame. An extrusion barrel and a crushing barrel are arranged on the frame. The crushing barrel is installed above the extrusion barrel. The discharge port of the crushing barrel is connected to the feed port of the extrusion barrel through a feeding pipeline. A crushing device is arranged on the crushing barrel. An extrusion channel is arranged in the extrusion barrel, and a rotatable extrusion screw is arranged in the extrusion channel. One end of the extrusion screw is connected with a driving device. The driving device includes a reducer and a driving motor. The driving motor is connected to the reducer, and the reducer is connected to the extrusion screw. In the utility model, the design of the crushing device can well crush the raw materials, so that the raw materials can have uniform particle sizes, and can be uniformly heated in the extrusion barrel, improving the extrusion effect.

[0004] However, the above patent has the following deficiencies:

[0005] 1. In the above patent, the raw materials are crushed by a crushing device. However, due to the viscosity of the TPU raw materials, when injecting the raw materials, the feeding port is easily blocked, reducing the extrusion efficiency of the raw materials.

[0006] 2. The above patent and common extruders need to extrude the raw materials to form a film. However, during the discharge process of the raw materials, there is no limit on both sides of the raw materials, and the width of the film cannot be adjusted. Utility Model Content

[0007] The utility model provides an extruder for TPU car wrap film raw materials, aiming to solve the problems mentioned in the above background, that is, due to the viscosity of the TPU raw materials, the feeding port is easily blocked, reducing the extrusion efficiency of the raw materials, and at the same time, there is no limit on both sides of the raw materials, and the width of the film cannot be adjusted.

[0008] The utility model is realized as follows. An extruder for TPU car wrap film raw materials includes an extrusion mechanism. The extrusion mechanism includes an extrusion box. A support frame is fixedly installed at the lower end of the extrusion box. Electric heating wires are arranged inside the extrusion box.

[0009] The extrusion box is provided with a feed inlet, and a lifting groove is installed on the extrusion box, and the lifting groove is arranged above the feed inlet;

[0010] A feeding mechanism, the feeding mechanism includes a feed hopper, lifting blocks are arranged on the outer walls on both sides of the feed hopper, and the feed hopper is slidably connected to the lifting groove through the lifting blocks;

[0011] A discharging mechanism, the discharging mechanism is installed on the extrusion mechanism.

[0012] Preferably, two fixing blocks are arranged on the inner wall of the lifting groove, a connecting spring is fixedly installed on the fixing block, one end of the connecting spring is fixedly connected to the fixing block, and the other end is fixedly connected to the lifting block;

[0013] A reduction motor is installed on the lifting groove, and an eccentric block is installed at the output end of the reduction motor; in this solution, the reduction motor drives the eccentric block to rotate, collide with the lifting block, the lifting block squeezes the connecting spring, and drives the lifting block to move longitudinally through the connecting spring, so that the feed hopper vibrates up and down.

[0014] Preferably, a plurality of telescopic rods are installed at the lower end of the feed hopper, and the telescopic rods are slidably connected to the extrusion box;

[0015] A support spring is sleeved on the telescopic rod, and a limit frame is fixedly installed at the lower end of the telescopic rod. One end of the support spring is connected to the limit frame, and the other end is connected to the inner wall of the extrusion box; in this solution, the support springs are respectively fixedly connected to the limit frame and the extrusion box. When the telescopic rod descends, the support spring resets through its own elasticity, thereby supporting the feed hopper and extending the service life of the feed hopper.

[0016] Preferably, an extrusion shaft is rotatably installed in the extrusion box, and extrusion fan blades connected end to end are arranged on the outer wall of the extrusion shaft;

[0017] A first bevel gear is fixedly installed on the extrusion shaft, and a first driving motor is fixedly installed on the outer wall of the extrusion box. A second bevel gear meshing with the first bevel gear is installed at the output end of the first driving motor; in this solution, the first driving motor drives the extrusion shaft to rotate through gear transmission, and uses the extrusion fan blades connected end to end to push the melted raw materials, thereby extruding the raw materials.

[0018] Preferably, a discharge port is formed on the lower surface of the extrusion box, and an extrusion head is installed on the discharge port; in this solution, the extruded raw materials are discharged through the discharge port and discharged by the extrusion head.

[0019] Preferably, the discharging mechanism includes a discharge plate, the discharge plate is fixedly installed on the support frame obliquely, and the discharge plate is arranged below the extrusion head;

[0020] A fixed plate is fixedly installed on the discharge plate, and a fixing frame is installed on the discharge plate. The fixing frame is installed above the fixed plate. An adjusting screw rod is rotatably installed in the fixing frame, and a slider is threadedly connected to the adjusting screw rod. A second driving motor is installed on the fixing frame, and the second driving motor is drivingly connected to the adjusting screw rod;

[0021] The slider is fixedly installed with a limiting plate; in this solution, the second driving motor drives the adjusting screw rod to rotate, drives the slider to move, and further adjusts the distance between the moving plate and the fixed plate, facilitating the adjustment of the width of the car clothing film.

[0022] Preferably, hydraulic push rods are fixedly installed on the bottom wall of the extrusion box and the support frame respectively. Rotating rollers are rotatably installed at the telescopic ends of the two hydraulic push rods; in this solution, the two hydraulic push rods drive the two rotating rollers to approach each other to extrude the raw materials.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows: A TPU car clothing film raw material extruder of the present utility model

[0024] 1. The feed hopper is slidably connected to the lifting groove on the extrusion box. At the same time, a lifting block slidably connected to the lifting groove is installed on the feed hopper, and a fixed block is installed on the inner wall of the lifting groove. A connecting spring connecting the lifting block is installed on the fixed block. The eccentric block on the reduction motor can knock against the lifting block to drive the feed hopper to vibrate up and down, preventing the raw materials from clogging the inside of the feed hopper;

[0025] 2. The discharge mechanism includes an inclined discharge plate. A fixed plate is fixedly installed on the discharge plate. An adjusting screw rod driven by a motor is installed on the discharge plate through a fixing frame. The adjusting screw rod drives the limiting plate to move. The limiting plate and the fixed plate limit the width of the car clothing film, reducing the cutting amount on both sides of the car clothing film, and the use cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the whole of the present utility model

[0027] Figure 2 of the present utility model Figure 1 is an enlarged view of part A

[0028] Figure 3 is a schematic structural diagram of the discharge plate of the present utility model

[0029] In the figure:

[0030] 1. Extrusion mechanism; 11. Extrusion box; 111. Feed inlet; 112. Discharge outlet; 12. Support frame; 13. Extrusion shaft; 131. Bevel gear one; 132. Extrusion fan blade; 14. First driving motor; 141. Bevel gear two; 15. Electric heating wire; 16. Extrusion head;

[0031] 2. Feeding mechanism; 21. Feeding hopper; 211. Lifting block; 22. Lifting groove; 221. Fixed block; 23. Reduction motor; 231. Eccentric block; 24. Connecting spring; 25. Telescopic rod; 251. Supporting spring; 252. Limiting frame;

[0032] 3. Discharging mechanism; 31. Discharging plate; 32. Fixed plate; 33. Limiting plate; 34. Fixed frame; 341. Adjusting screw; 342. Second driving motor; 343. Slide block; 35. Hydraulic push rod; 351. Pressing roller. Detailed implementation manners

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0034] Generally, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0035] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] Please refer to Figures 1-3, the present utility model provides a technical solution: a TPU car film raw material extruder, including an extrusion mechanism 1. The extrusion mechanism 1 includes an extrusion box 11. A support frame 12 is fixedly installed at the lower end of the extrusion box 11. An electric heating wire 15 is arranged inside the extrusion box 11. A feed inlet 111 is opened on the extrusion box 11, and a lifting groove 22 is installed on the extrusion box 11. The lifting groove 22 is arranged on the feed inlet 111. A feeding mechanism 2, the feeding mechanism 2 includes a feed hopper 21. Lifting blocks 211 are arranged on the outer walls on both sides of the feed hopper 21. The feed hopper 21 is slidably connected to the lifting groove 22 through the feed hopper 21. A discharging mechanism 3, the discharging mechanism 3 is installed on the extrusion mechanism 1.

[0039] Among them, the raw materials are placed inside the extrusion box 11. The feed hopper 21 is slidably connected to the lifting groove 22 through the lifting blocks 211, which is convenient for the longitudinal movement of the feed hopper 21. At the same time, the electric heating wire 15 raises the temperature inside the extrusion box 11 to melt the raw materials.

[0040] Two fixing blocks 221 are arranged on the inner wall of the lifting groove 22. A connecting spring 24 is fixedly installed on the fixing blocks 221. One end of the connecting spring 24 is fixedly connected to the fixing block 221, and the other end is fixedly connected to the lifting block 211. A reduction motor 23 is installed on the lifting groove 22. An eccentric block 231 is installed at the output end of the reduction motor 23. A plurality of telescopic rods 25 are installed at the lower end of the feed hopper 21. The telescopic rods 25 are slidably connected to the extrusion box 11. A support spring 251 is sleeved on the telescopic rods 25, and a limit frame 252 is fixedly installed at the lower end of the telescopic rods 25. One end of the support spring 251 is connected to the limit frame 252, and the other end is connected to the inner wall of the extrusion box 11.

[0041] In addition, the reduction motor 23 drives the eccentric block 231 to rotate. When the eccentric block 231 rotates, it touches the lifting block 211. The lifting block 211 squeezes the connecting spring 24, and the connecting spring 24 drives the lifting block 211 to reset, making the feed hopper 21 vibrate up and down to prevent the raw materials from sticking inside the feed hopper 21 and blocking the feed hopper 21.

[0042] An extrusion shaft 13 is rotatably installed inside the extrusion box 11. Extrusion fan blades 132 connected end to end are arranged on the outer wall of the extrusion shaft 13. A first bevel gear 131 is fixedly installed on the extrusion shaft 13, and a first driving motor 14 is fixedly installed on the outer wall of the extrusion box 11. A second bevel gear 141 meshing with the first bevel gear 131 is installed at the output end of the first driving motor 14. A discharge port 112 is opened on the lower surface of the extrusion box 11, and an extrusion head 16 is installed on the discharge port 112.

[0043] In addition, the first driving motor 14 drives the extrusion shaft 13 to rotate by gear transmission, driving the rotation of the extrusion fan blades 132. The melted raw materials are pushed by the extrusion fan blades 132, so that the raw materials are discharged from the discharge port 112 and the extrusion head 16.

[0044] The discharging mechanism 3 includes a discharging plate 31 which is fixedly installed on the support frame 12 in an inclined manner, and the discharging plate 31 is arranged below the extrusion head 16. A fixed plate 32 is fixedly installed on the discharging plate 31, and a fixing frame 34 is installed on the discharging plate 31. The fixing frame 34 is installed above the fixed plate 32. An adjusting screw 341 is rotatably installed in the fixing frame 34, and a slider 343 is threadedly connected to the adjusting screw 341. A second driving motor 342 is installed on the fixing frame 34, and the second driving motor 342 is drivingly connected to the adjusting screw 341. A limiting plate 33 is fixedly installed on the slider 343.

[0045] Furthermore, the discharging plate 31 receives the discharged raw material. The second driving motor 342 drives the adjusting screw 341 to rotate, drives the limiting plate 33 to move through the slider 343, and a sealing gasket is arranged at the bottom end of the limiting plate 33 to prevent the raw material from leaking. Furthermore, it cooperates with the fixed plate 32 to limit the width of the car wrap film, reduce the cutting amount of the car wrap film, and save costs.

[0046] Hydraulic push rods 35 are fixedly installed on both the bottom wall of the extrusion box 11 and the support frame 12, and rolling rollers 351 are rotatably installed at the telescopic ends of the two hydraulic push rods 35.

[0047] Specifically, the telescopic ends of the two hydraulic push rods 35 drive the rolling rollers 351 to approach each other, and the two rolling rollers 351 are used to initially extrude the car wrap film raw material, so that the car wrap film raw material is conveyed into the corresponding cooling machine for cooling.

[0048] The working principle and usage process of the present utility model: Please refer to Figures 1-3 , pour the raw material from the feed hopper 21. The reduction motor 23 drives the eccentric block 231 to rotate. When the eccentric block 231 rotates, it touches the lifting block 211. The lifting block 211 squeezes the connecting spring 24, and the connecting spring 24 drives the lifting block 211 to reset, causing the feed hopper 21 to vibrate up and down, preventing the raw material from sticking inside the feed hopper 21 and blocking the feed hopper 21. The raw material enters the extrusion box 11 from the feed port 111. The heating wire 15 raises the temperature inside the extrusion box 11 to melt the raw material. The first driving motor 14 drives the extrusion shaft 13 to rotate by means of gear transmission, drives the extrusion fan blades 132 to rotate, and uses the extrusion fan blades 132 to push the melted raw material, so that the raw material is discharged from the discharge port 112 and the extrusion head 16. The discharging plate 31 receives the discharged raw material. The second driving motor 342 drives the adjusting screw 341 to rotate, drives the limiting plate 33 to move through the slider 343, and further cooperates with the fixed plate 32 to limit the width of the car wrap film, reduce the cutting amount of the car wrap film, and save costs.

[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A TPU car cover film raw material extruder, characterized by: The invention comprises an extrusion mechanism (1), wherein the extrusion mechanism (1) comprises an extrusion box (11), a support frame (12) is fixedly mounted on the lower end of the extrusion box (11), and a heating wire (15) is arranged inside the extrusion box (11); The extrusion box (11) is provided with a feed port (111), and a lifting groove (22) is installed on the extrusion box (11), and the lifting groove (22) is arranged on the feed port (111); A feeding mechanism (2), the feeding mechanism (2) comprising a feeding hopper (21), both sides of the outer wall of the feeding hopper (21) being provided with lifting blocks (211), the feeding hopper (21) being slidably connected to the lifting groove (22) via the lifting blocks (211); A discharge mechanism (3), wherein the discharge mechanism (3) is mounted on the extrusion mechanism (1).

2. A TPU car cover film raw material extruder as claimed in claim 1, characterized in that: The inner wall of the lifting groove (22) is provided with two fixed blocks (221), and a connecting spring (24) is fixedly installed on the fixed block (221), and one end of the connecting spring (24) is fixedly connected to the fixed block (221), and the other end is fixedly connected to the lifting block (211); A reduction motor (23) is installed on the lifting slot (22), and an eccentric block (231) is installed at the output end of the reduction motor (23).

3. A TPU car cover film raw material extruder as claimed in claim 1, characterized in that: A plurality of telescopic rods (25) are installed at the lower end of the feed hopper (21), and the telescopic rods (25) are slidably connected to the extrusion box (11); A support spring (251) is mounted on the telescopic rod (25), and a limit frame (252) is fixedly mounted on the lower end of the telescopic rod (25); one end of the support spring (251) is connected to the limit frame (252), and the other end is connected to the inner wall of the extrusion box (11).

4. A TPU car cover film raw material extruder as claimed in claim 1, characterized in that: An extrusion shaft (13) is rotatably mounted in the extrusion box (11), and extrusion blades (132) connected end to end are arranged on the outer wall of the extrusion shaft (13); A bevel gear 1 (131) is fixedly mounted on the extrusion shaft (13), and a drive motor 1 (14) is fixedly mounted on the outer wall of the extrusion box (11); a bevel gear 2 (141) meshing with the bevel gear 1 (131) is mounted on the output end of the drive motor 1 (14).

5. A TPU car cover film raw material extruder as claimed in claim 1, characterized in that: The lower surface of the extrusion box (11) is provided with a discharge port (112), and an extrusion head (16) is installed on the discharge port (112).

6. A TPU car cover film raw material extruder as claimed in claim 5, characterized in that: The discharge mechanism (3) comprises a discharge plate (31), the discharge plate (31) is fixedly mounted on the support frame (12) in an inclined manner, and the discharge plate (31) is arranged below the extrusion head (16); A fixing plate (32) is fixedly mounted on the discharge plate (31), and a fixing frame (34) is mounted on the discharge plate (31), the fixing frame (34) is mounted above the fixing plate (32), an adjusting screw (341) is rotatably mounted in the fixing frame (34), and a slider (343) is threadedly connected to the adjusting screw (341), a second driving motor (342) is mounted on the fixing frame (34), and the second driving motor (342) is transmission-connected to the adjusting screw (341); The sliding block (343) is fixedly mounted on the limiting plate (33).

7. A TPU car cover film raw material extruder as claimed in claim 1, characterized in that: Hydraulic push rods (35) are fixedly mounted on the bottom wall of the extrusion box (11) and the support frame (12), and pressure rollers (351) are rotatably mounted on the telescopic ends of the two hydraulic push rods (35).

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