Twin-screw extrusion equipment for thermoplastic elastomer production

Abstract

The utility model relates to the technical field of twin-screw extrusion equipment, in particular to twin-screw extrusion equipment for thermoplastic elastomer production, which comprises a support frame, the support frame is fixedly mounted on the bottom surface and can support the whole device, and a twin-screw extruder body is fixedly connected to the top surface of the support frame through bolts. A plurality of raw material particles can be melted, mixed and extruded, one end of the top face of the double-screw extruder body is fixedly connected with a feeding hopper communicated with the interior of the double-screw extruder body, and the crushing mechanism is arranged in the feeding hopper and can crush large-particle raw materials into small particles. According to the double-screw extruder disclosed by the utility model, large-particle raw materials can be extruded and crushed through the rotation of the two crushing rollers, so that in the process of melting and mixing the raw materials by the double-screw extruder body, the raw materials can be quickly melted and mixed, the extruded raw materials can be prevented from containing hard raw material particles, and the production quality of thermoplastic elastomers can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of twin-screw extrusion equipment, specifically a twin-screw extrusion equipment for the production of thermoplastic elastomers. Background Technology

[0002] Thermoplastic elastomers, abbreviated as TPE or TPR, are a new type of polymer material that lies between rubber and plastic. At room temperature, they exhibit the elasticity of rubber, while at high temperatures they possess the ability to be plasticized and molded. Their structural characteristics are formed by chemical bonds connecting different resin and rubber segments. The resin segments create physical cross-linking points, while the rubber segments contribute to elasticity. During the production of thermoplastic elastomers, a twin-screw extruder is used to heat and shear various raw material particles, melting, plasticizing, and fusing them. As the screw rotates, the plastic is uniformly extruded through the barrel and die to form the final product.

[0003] Currently, when using existing twin-screw extruders, the varying sizes of raw material particles during the feeding process cause some larger particles to fail to melt quickly during the melting and fusion process. This results in some semi-melted raw materials mixing with the fully melted raw materials, leading to low-quality extruded products. Utility Model Content

[0004] The purpose of this invention is to provide a twin-screw extrusion apparatus for the production of thermoplastic elastomers, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Twin-screw extrusion equipment for thermoplastic elastomer production includes:

[0007] The support frame, installed and fixed to the bottom surface, can support the entire device;

[0008] The twin-screw extruder body is fixedly connected to the top surface of the support frame by bolts. It can melt, mix and extrude various raw material particles. One end of the top surface of the twin-screw extruder body is fixedly connected to a feed hopper that communicates with the inside of the twin-screw extruder body.

[0009] The crushing mechanism is located inside the feed hopper and can crush large raw materials into small particles. The crushing mechanism includes two symmetrical round rods that are rotatably connected to each other on opposite sides inside the feed hopper. Crushing rollers are fixedly connected to the outer walls of the round rods.

[0010] The vibration mechanism, located inside the feed hopper and below the crushing mechanism, ensures that the raw material falls evenly into the interior of the twin-screw extruder body, preventing the raw material from clogging the feed inlet.

[0011] Furthermore, a pad is fixedly connected to the outer side of the feed hopper, one end of the round rod passes through the side of the feed hopper and is fixedly connected to a gear, the two gears mesh and drive each other, a motor is fixedly connected to the top surface of the pad, and the output end of the motor is fixedly connected to one of the round rods.

[0012] Furthermore, a guide plate is fixedly connected to the inner top of the feed hopper along the length of the crushing roller.

[0013] Furthermore, a fixing block is fixedly connected between two adjacent sides inside the feed hopper, and the vibration mechanism includes a screen plate that slides inside the feed hopper. A telescopic member for limiting the position of the screen plate is fixedly connected between the screen plate and the fixing block.

[0014] Furthermore, two symmetrical rotating rods are rotatably connected between the two opposite sides inside the feed hopper, and cams are fixedly connected to both ends of the outer wall of each rotating rod.

[0015] Furthermore, a second pad is fixedly connected to the side of the feed hopper, one end of the rotating rod passes through the side of the feed hopper and is fixedly connected to a synchronous pulley, the two synchronous pulleys are driven by a synchronous belt, a second motor is fixedly connected to the top surface of the second pad, and the output end of the second motor is fixedly connected to one of the rotating rods.

[0016] Furthermore, the telescopic component includes a sleeve fixedly connected to the mesh plate, a sleeve rod slidably connected inside the sleeve and fixedly connected to a fixing block at a corresponding position, and a spring fixedly connected between the sleeve rod and the sleeve at the corresponding position.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The rotation of two crushing rollers can crush large raw materials. Therefore, during the melting and mixing of raw materials in the twin-screw extruder body, the raw materials can be melted and mixed quickly, which can prevent the extruded raw materials from containing hard raw material particles, thereby improving the quality of thermoplastic elastomer production.

[0019] 2. The two rotating rods can be driven by the second motor to rotate. The rotating rods can cause the two cams at the corresponding positions to rotate. The rotation of the cams can cause the screen plate to vibrate up and down under the action of the four telescopic parts. The vibration of the screen plate can make the raw material on the top surface fall evenly, thereby preventing the raw material from blocking the connection between the feed hopper and the twin-screw extruder body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2This is a schematic diagram of the feed hopper in this utility model;

[0022] Figure 3 This is a schematic diagram of the crushing mechanism in this utility model;

[0023] Figure 4 This is a schematic diagram of the vibration mechanism in this utility model.

[0024] In the diagram: 1. Support frame; 2. Twin-screw extruder body; 21. Feed hopper; 22. Guide plate; 23. Pad plate one; 24. Fixing block; 25. Pad plate two; 3. Crushing mechanism; 31. Crushing roller; 32. Gear; 33. Motor one; 4. Vibration mechanism; 41. Mesh plate; 42. Sleeve; 43. Sleeve rod; 44. Cam; 45. Synchronous pulley; 46. Motor two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 In this embodiment of the present invention, a twin-screw extrusion equipment for thermoplastic elastomer production includes a support frame 1, a twin-screw extruder body 2, a crushing mechanism 3, and a vibration mechanism 4. The support frame 1 is fixedly installed on the bottom surface to support the entire device. The twin-screw extruder body 2 is fixedly connected to the top surface of the support frame 1 by bolts, and can melt, mix, and extrude various raw material particles. One end of the top surface of the twin-screw extruder body 2 is fixedly connected to a feed hopper 21 that communicates with the interior of the twin-screw extruder body 2. The crushing mechanism 3 is located inside the feed hopper 21 and can crush large raw material particles into small particles. The crushing mechanism 3 includes two symmetrical round rods that are rotatably connected to the two opposite sides inside the feed hopper 21. A crushing roller 31 is fixedly connected to the outer wall of the round rods. The vibration mechanism 4 is located inside the feed hopper 21 and below the crushing mechanism 3, and can make the raw material fall evenly into the interior of the twin-screw extruder body 2 to prevent the raw material from blocking the feed inlet.

[0027] Specifically, firstly, various raw materials are poured into the feed hopper 21. The rotation of two crushing rollers 31 can crush large particles of raw materials. The crushed raw material particles and small particles fall onto the vibration mechanism 4. The activation of the vibration mechanism 4 can vibrate the raw materials on it, so that the raw materials can fall evenly into the interior of the twin-screw extruder body 2. Then, the activation of the twin-screw extruder body 2 can transport various raw materials to its discharge port. During the transport process, the twin-screw extruder body 2 can perform operations such as melting and mixing of various raw materials. The melted and mixed raw materials are extruded from the discharge port. Since some large particles in the raw materials are crushed by the two crushing rollers 31, the raw materials can be melted and mixed quickly during the melting and mixing process of the twin-screw extruder body 2. This can prevent the extruded raw materials from containing hard raw material particles, thereby improving the quality of thermoplastic elastomer production.

[0028] Example 1

[0029] like Figure 3 As shown, in this embodiment, a pad 23 is fixedly connected to the outer side of the feed hopper 21, one end of a round rod passes through the side of the feed hopper 21 and is fixedly connected to a gear 32, and the two gears 32 mesh for transmission. A motor 33 is fixedly connected to the top surface of the pad 23, and the output end of the motor 33 is fixedly connected to one of the round rods. A guide plate 22 is fixedly connected to the inner top of the feed hopper 21 and along the length of the crushing roller 31.

[0030] In this embodiment, the two gears 32 can be rotated by the drive of the motor 33. Since the two gears 32 mesh and drive each other, the two crushing rollers 31 rotate in opposite directions, so that large raw materials can be crushed into small particles, so that the twin-screw extruder body 2 can quickly melt and mix the raw materials. The raw materials can fall between the two crushing rollers 31 through the two guide plates 22.

[0031] Example 2

[0032] like Figure 4As shown, in this embodiment, a fixing block 24 is fixedly connected between two adjacent sides inside the feed hopper 21. The vibration mechanism 4 includes a screen plate 41 that slides inside the feed hopper 21. A telescopic member for limiting the position of the screen plate 41 is fixedly connected between the screen plate 41 and the fixing block 24. Two symmetrical rotating rods are rotatably connected between two opposite sides inside the feed hopper 21. Cams 44 are fixedly connected to both ends of the outer wall of the rotating rods. A pad plate 25 is fixedly connected to the side of the feed hopper 21. One end of the rotating rod passes through the side of the feed hopper 21 and is fixedly connected to a synchronous pulley 45. The two synchronous pulleys 45 are driven by a synchronous belt. A motor 46 is fixedly connected to the top surface of the pad plate 25. The output end of the motor 46 is fixedly connected to one of the rotating rods. The telescopic member includes a sleeve 42 fixedly connected to the screen plate 41. A sleeve rod 43 fixedly connected to the fixing block 24 at the corresponding position is slidably connected inside the sleeve 42. A spring is fixedly connected between the sleeve rod 43 and the sleeve 42 at the corresponding position.

[0033] In this embodiment, the two rotating rods can be driven by the second motor 46 to rotate. The rotating rods can cause the two cams 44 at the corresponding positions to rotate. The rotation of the cams 44 can cause the screen plate 41 to vibrate up and down under the action of the four telescopic members. The vibration of the screen plate 41 can make the raw material on its top surface fall evenly, thereby preventing the raw material from blocking the connection between the feed hopper 21 and the twin-screw extruder body 2.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A twin-screw extruder for producing thermoplastic elastomers, characterized in that, include: The support frame (1) is installed and fixed on the bottom surface, which can support the entire device; The twin-screw extruder body (2) is fixedly connected to the top surface of the support frame (1) by bolts. It can melt, mix and extrude various raw material particles. One end of the top surface of the twin-screw extruder body (2) is fixedly connected to a feed hopper (21) that communicates with the inside of the twin-screw extruder body (2). The crushing mechanism (3) is set inside the feed hopper (21) and can crush large particles into small particles. The crushing mechanism (3) includes two symmetrical round rods that are rotatably connected to the two opposite sides inside the feed hopper (21). The outer wall of the round rods is fixedly connected to a crushing roller (31). The vibration mechanism (4) is located inside the feed hopper (21) and below the crushing mechanism (3). It can make the raw material fall evenly into the interior of the twin-screw extruder body (2) and prevent the raw material from blocking the feed port.

2. The twin-screw extruder for thermoplastic elastomer production according to claim 1, characterized in that, A pad (23) is fixedly connected to the outer side of the feed hopper (21). One end of the round rod passes through the side of the feed hopper (21) and is fixedly connected to a gear (32). The two gears (32) mesh and drive each other. A motor (33) is fixedly connected to the top surface of the pad (23). The output end of the motor (33) is fixedly connected to one of the round rods.

3. The twin-screw extruder for thermoplastic elastomer production according to claim 2, characterized in that, A guide plate (22) is fixedly connected to the inner top of the feed hopper (21) and along the length of the crushing roller (31).

4. The twin-screw extruder for thermoplastic elastomer production according to claim 2, characterized in that, A fixing block (24) is fixedly connected between two adjacent sides inside the feed hopper (21). The vibration mechanism (4) includes a mesh plate (41) that slides inside the feed hopper (21). A telescopic member for limiting the mesh plate (41) is fixedly connected between the mesh plate (41) and the fixing block (24).

5. The twin-screw extruder for thermoplastic elastomer production according to claim 4, characterized in that, The feed hopper (21) has two symmetrical rotating rods rotatably connected between its two opposite sides, and cams (44) are fixedly connected to both ends of the outer wall of each rotating rod.

6. The twin-screw extruder for thermoplastic elastomer production according to claim 5, characterized in that, A pad two (25) is fixedly connected to the side of the feed hopper (21). One end of the rotating rod passes through the side of the feed hopper (21) and is fixedly connected to a synchronous pulley (45). The two synchronous pulleys (45) are driven by a synchronous belt. A motor two (46) is fixedly connected to the top surface of the pad two (25). The output end of the motor two (46) is fixedly connected to one of the rotating rods.

7. The twin-screw extruder for thermoplastic elastomer production according to claim 6, characterized in that, The telescopic component includes a sleeve (42) fixedly connected to the mesh plate (41), and a sleeve rod (43) fixedly connected to a fixing block (24) at a corresponding position is slidably connected inside the sleeve (42). A spring is fixedly connected between the sleeve rod (43) and the sleeve (42) at the corresponding position.

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