Thermoplastic elastomer processing cutting device

Abstract

The utility model relates to cutting equipment especially a cutting device for thermoplastic elastomer processing, including support platform, the upper surface fixed mounting of support platform has the conveyer platform, is provided with cutting assembly on the conveyer platform, one end fixed mounting of conveyer platform has pre -press frame, is provided with the compression member in pre -press frame to be used for the pre -compression operation to thermoplastic elastomer, the conveyer platform is provided with a plurality of compression frame along its length direction, is provided with compression preheating piece in compression frame to be used for the again compression operation to thermoplastic elastomer, preliminary shaping is carried out to material through the first fixed roll and second fixed roll of pre -press frame, and the lateral pushboard of a plurality of compression frame and heating compression roller realize secondary compression, can effectively eliminate the internal stress of material, avoid the size fluctuation caused by elastic resilience when cutting.

Description

Technical Field

[0001] This utility model relates to cutting equipment, and in particular to a cutting device for processing thermoplastic elastomers. Background Technology

[0002] Thermoplastic elastomers (TPE / TPR), also known as synthetic rubber or synthetic materials, possess the excellent properties of traditional cross-linked vulcanized rubber, such as high elasticity, aging resistance, and oil resistance, while also having the advantages of ordinary plastics, such as ease of processing and wide range of processing methods. They can be produced by injection molding, extrusion, blow molding, etc., and the sprue scraps can be directly reused after being crushed. The dual properties of rubber and plastic and the wide range of characteristics of thermoplastic elastomers make them widely used in the rubber industry to manufacture daily necessities such as rubber shoes and rubber sheets, as well as various industrial products such as rubber hoses, tapes, strips, sheets, parts, and adhesives.

[0003] For example, patent publication number CN218195417U discloses a cutting device for processing thermoplastic elastomers, including a base and a worktable fixedly mounted on the top surface of the base. A groove is formed in the middle of the top wall of the base. A cutting device is provided on one side of the worktable. A clamping device is provided in the groove. The clamping device includes a first limiting block, a second limiting block, and a tube cutting seat symmetrically arranged. The first limiting block and the second limiting block are symmetrically arranged on the top surface of the worktable. The tube cutting seat is fixedly installed between the first limiting block and the second limiting block. The tube cutting seat is located in the groove. A motor is provided in the second limiting block and is electrically connected to the second limiting block. By setting two limiting blocks on both sides of the worktable, the tube is limited, preventing the tube from tilting during the cutting process, which would lead to poor cutting effect and effectively improve the pass rate of the tube products. The motor drives the limiting blocks to move left and right, ensuring a smoother cutting process.

[0004] While these types of equipment can prevent the hose from tilting during the cutting process and provide stable positioning for thermoplastic elastomers, they lack an effective pretreatment mechanism when cutting thermoplastic elastomers. This is because residual stress exists inside the thermoplastic elastomer after extrusion, and these types of equipment are prone to dimensional deviations due to elastic rebound during cutting, especially for strip-shaped materials. The radial contraction at the moment of cutting can lead to uneven cuts, which cannot meet the assembly requirements of high-precision products such as automotive seals and medical catheters.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To address the aforementioned problems, this invention provides a cutting device for processing thermoplastic elastomers, which can solve the problem of springback dimensional deviations that occur during material cutting.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cutting device for processing thermoplastic elastomers, including a support platform, a conveyor platform fixedly installed on the upper surface of the support platform, a cutting component provided on the conveyor platform, a pre-compression frame fixedly installed at one end of the conveyor platform, a clamping component provided inside the pre-compression frame for pre-compressing the thermoplastic elastomer, and multiple clamping frames provided along the length of the conveyor platform, each clamping frame being provided with a clamping preheating component for further clamping the thermoplastic elastomer.

[0008] Furthermore, multiple support rollers are uniformly and rotatably mounted on the upper surface of the conveyor.

[0009] The above technical solution is used to support and transport thermoplastic elastomer parts.

[0010] Furthermore, the clamping component includes a first fixed roller, which is rotatably mounted inside the lower end of the pre-compression frame. A second fixed roller is slidably mounted inside the pre-compression frame along its height direction. The second fixed roller is located above the first fixed roller. A drive motor is fixedly mounted at one end of the first fixed roller, and the drive motor is fixedly mounted on one side of the conveyor table.

[0011] By adopting the above technical solution, the first fixed roller can be driven to rotate by the drive motor.

[0012] Furthermore, slots are provided on both inner walls of the pre-compression frame, and both ends of the second fixed roller are engaged in the slots. A guide rod is inserted into one end of the second fixed roller, and one end of the guide rod is fixedly connected to one end of the conveyor table. A lifting screw is slidably installed on the other end of the second fixed roller, and a lifting motor is provided at the lower end of the lifting screw. The lifting motor is fixedly installed on the conveyor table.

[0013] By adopting the above technical solution, the lifting screw can be driven to rotate by the lifting motor, thereby realizing the lifting and lowering of the second fixed roller.

[0014] Furthermore, the pressing and preheating component includes a first electric push rod, which is symmetrically and evenly fixedly installed on the inner walls of both sides of the pressing frame. A push plate with ball bearings is fixedly installed at the end of the first electric push rod on the same side. The push plate has symmetrical mounting holes at both ends for splicing multiple push plates.

[0015] By adopting the above technical solution, the sidewall of the thermoplastic elastomer can be supported by the push plate with ball bearings.

[0016] Furthermore, the top of the clamping frame is provided with symmetrical second electric push rods at equal intervals, and the lower ends of the two second electric push rods are fixedly installed with clamping rollers, and heating elements are installed inside the clamping rollers.

[0017] By adopting the above technical solution, in order to provide a heat source to the pressing roller through the heating element, the heating element can be selected as a heating wire or a heating rod.

[0018] Furthermore, the cutting assembly includes a cutting frame, within which a cutting blade is fixedly mounted via a telescopic cylinder.

[0019] By adopting the above technical solution, it is possible to cut thermoplastic elastomers.

[0020] In summary, this utility model has the following beneficial effects: 1. In this application, the material is initially shaped by the first and second fixed rollers of the pre-pressing frame, and secondary pressing is achieved by the side push plates of multiple pressing frames and the heated pressing rollers. This can effectively eliminate the internal stress of the material and avoid dimensional fluctuations caused by elastic rebound during cutting.

[0021] 2. In this application, the pressure roller has a built-in heating element, which can perform micro-preheating treatment on the material surface. This can reduce the material hardness to reduce cutting resistance and enable the cut surface to be quickly shaped. At the same time, the push plate ball structure reduces frictional damage during material conveying and improves the surface quality of the finished product.

[0022] 3. In this application, the height of the second fixed roller is adjusted by a lifting screw, the distance between the push plates is adaptively adjusted by the first electric push rod, and the pressure of the pressing roller can be precisely controlled by the second electric push rod, which is compatible with thermoplastic elastomer strip materials of different diameters and hardness. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the position of the drive motor of this utility model; Figure 3 This is a schematic diagram showing the position of the guide rod of this utility model; Figure 4 This is a schematic diagram showing the position of the ball bearings in this utility model; Figure 5 This is a schematic diagram of the structure of the pressing and preheating component of this utility model; Figure 6 for Figure 1 Enlarged view of the structure at point A in the middle.

[0024] In the diagram: 1. Support platform; 2. Conveyor platform; 3. Cutting assembly; 301. Cutting frame; 302. Telescopic cylinder; 303. Cutting blade; 4. Pre-pressing frame; 5. Pressing component; 501. First fixed roller; 502. Second fixed roller; 503. Drive motor; 504. Slot; 505. Guide rod; 506. Lifting screw; 507. Lifting motor; 6. Pressing frame; 7. Pressing preheating component; 701. First electric push rod; 702. Ball bearing; 703. Push plate; 704. Heating component; 705. Second electric push rod; 706. Pressing roller; 8. Support roller. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] like Figure 1-6 As shown in the embodiment of this application, a cutting device for processing thermoplastic elastomers is disclosed, including a support platform 1. A conveyor platform 2 is fixedly installed on the upper surface of the support platform 1. A cutting assembly 3 is provided on the conveyor platform 2. The cutting assembly 3 includes a cutting frame 301. A cutting blade 303 is fixedly installed in the cutting frame 301 through a telescopic cylinder 302. A pre-compression frame 4 is fixedly installed at one end of the conveyor platform 2. A clamping component 5 is provided in the pre-compression frame 4 for pre-compressing the thermoplastic elastomer. Multiple clamping frames 6 are provided along the length of the conveyor platform 2. A clamping preheating component 7 is provided in the clamping frame 6 for re-compressing the thermoplastic elastomer. It should be noted that the electric push rod and motor of this device are powered by an external power source, and the external controller can control the opening and closing of the electric push rod and motor of this device. The support platform 1 is made of welded steel plate, and the four corners of the bottom are fixed to the ground by expansion bolts.

[0027] Multiple support rollers 8 are evenly rotated and installed on the upper surface of the conveyor table 2. It should be noted that the two ends of the support rollers 8 are connected to the conveyor table 2 through deep groove ball bearings, and the surface is coated with Teflon to reduce friction.

[0028] The clamping component 5 includes a first fixed roller 501, which is rotatably mounted inside the lower end of the pre-compression frame 4. A second fixed roller 502 is slidably mounted inside the pre-compression frame 4 along its height direction. The second fixed roller 502 is located above the first fixed roller 501. A drive motor 503 is fixedly mounted on one end of the first fixed roller 501. The drive motor 503 is fixedly mounted on one side of the conveyor table 2. The lower end of the guide rod 505 is fixed to the conveyor table 2 through a flange to ensure the verticality of the second fixed roller 502 when it is raised or lowered.

[0029] Both sides of the pre-compression frame 4 have slots 504 on their inner walls. Both ends of the second fixed roller 502 are engaged in these slots 504. A guide rod 505 is inserted into one end of the second fixed roller 502, and one end of the guide rod 505 is fixedly connected to one end of the conveyor table 2. A lifting screw 506 is slidably mounted on the other end of the second fixed roller 502. A lifting motor 507 is mounted on the lower end of the lifting screw 506 and is fixedly mounted on the conveyor table 2. It should be noted that the shaft of the other end of the second fixed roller 502 is threadedly connected to the lifting screw 506. The lower end of the lifting screw 506 is connected to the lifting motor 507 via a reducer (not shown in the figure). The lifting motor 507 is fixed to the motor mounting base of the conveyor table 2 and can be controlled by an external controller (not shown in the figure) to achieve precise height adjustment. The preheating and pressing component 7 includes a first electric push rod 701, which is symmetrically and evenly fixedly installed on the inner walls of both sides of the pressing frame 6. A push plate 703 with ball bearings 702 is fixedly installed at the end of the first electric push rod 701 on the same side. The push plate 703 has symmetrically opened mounting holes at both ends for splicing multiple push plates 703. The top of the pressing frame 6 is evenly spaced and symmetrically arranged with second electric push rods 705. The lower ends of the two second electric push rods 705 are fixedly installed with pressing rollers 706. A heating element 704 is installed inside the pressing rollers 706. It should be noted that the first electric push rods 701 (model DTZ30) are symmetrically fixedly installed on the inner walls of both sides of each pressing frame 6. The ends of the first electric push rods 701 on the same side are fixedly connected to the push plate 703 (made of nylon) by bolts. It should be noted that the mounting holes symmetrically opened at both ends of the push plate 703 can be extended by bolt splicing to adapt to the processing of materials of different thicknesses. The top of the clamping frame 6 is evenly spaced with second electric push rods 705 (model DTZ50). The lower end of the second electric push rod 705 is connected to the clamping roller 706 (aluminum roller body) through a bearing seat. A heating rod (model single-end heating rod) is installed inside the clamping roller 706 along the axis. The heating rod 19 achieves temperature regulation through a temperature controller (since it is a common existing technology in the market, its structure is not described in this device). The roller body surface is covered with a thick Teflon coating to prevent sticking. The clamping roller 70618 corresponds to the support roller 83 vertically. The clamping force is adjusted by the second electric push rod 705 to ensure that the material maintains a stable shape while preheating.

[0030] The operating principle of the cutting device for thermoplastic elastomer processing in this embodiment is as follows: the drive motor 503 drives the first fixed roller 501 in the pre-compression frame 4 to rotate through the coupling. The first fixed roller 501 and the second fixed roller 502 above it use the friction between the two rollers to pull the material forward. At the same time, the lifting design of the second fixed roller 502 can adapt to materials of different diameters, ensuring uniform traction force during conveying and avoiding material slippage or stretching deformation. The multiple support rollers 8 on the surface of the conveyor 2 adopt a passive rotation design. When the material moves under the traction of the first fixed roller 501, the support rollers 8 rotate synchronously with the material. Rolling friction replaces sliding friction, reducing frictional damage to the material surface and providing stable support for the material to prevent bending and deviation during the conveying process. Throughout the conveying process, the feed speed is precisely controlled by adjusting the speed of the drive motor 503 through a frequency converter, ensuring that the material conveying speed matches the subsequent cutting frequency and avoiding cutting misalignment or material accumulation. Furthermore, pressure sensors can be installed on the second fixed roller 502 and the pressure roller 706 in this device, thereby enabling real-time monitoring of the extrusion force on the thermoplastic elastomer. Since this is a common existing technology in the market, its structure is not described in this device.

[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A cutting device for processing thermoplastic elastomers, comprising a support platform (1), a conveyor platform (2) fixedly mounted on the upper surface of the support platform (1), and a cutting assembly (3) disposed on the conveyor platform (2), characterized in that: A pre-compression frame (4) is fixedly installed at one end of the conveyor (2). A clamping component (5) is provided inside the pre-compression frame (4) for pre-compressing the thermoplastic elastomer. Multiple clamping frames (6) are provided on the conveyor (2) along its length. A clamping preheating component (7) is provided inside the clamping frame (6) for re-compressing the thermoplastic elastomer.

2. The cutting device for processing thermoplastic elastomers according to claim 1, characterized in that: Multiple support rollers (8) are uniformly mounted on the upper surface of the conveyor (2).

3. The cutting device for processing thermoplastic elastomers according to claim 1, characterized in that: The clamping component (5) includes a first fixed roller (501), which is rotatably installed inside the lower end of the pre-pressing frame (4). A second fixed roller (502) is slidably installed inside the pre-pressing frame (4) along its height direction. The second fixed roller (502) is located above the first fixed roller (501). A drive motor (503) is fixedly installed at one end of the first fixed roller (501). The drive motor (503) is fixedly installed on one side of the conveyor table (2).

4. The cutting device for processing thermoplastic elastomers according to claim 3, characterized in that: The inner walls of both sides of the pre-compression frame (4) are provided with slots (504). Both ends of the second fixed roller (502) are engaged in the slots (504). A guide rod (505) is inserted into one end of the second fixed roller (502). One end of the guide rod (505) is fixedly connected to one end of the conveyor table (2). A lifting screw (506) is slidably installed on the other end of the second fixed roller (502). A lifting motor (507) is provided at the lower end of the lifting screw (506). The lifting motor (507) is fixedly installed on the conveyor table (2).

5. The cutting device for processing thermoplastic elastomers according to claim 1, characterized in that: The pressing and preheating component (7) includes a first electric push rod (701). The first electric push rod (701) is symmetrically and evenly fixedly installed on the inner walls of both sides of the pressing frame (6). A push plate (703) with ball bearings (702) is fixedly installed at the end of the first electric push rod (701) on the same side. The push plate (703) has symmetrical mounting holes at both ends for splicing multiple push plates (703).

6. The cutting device for processing thermoplastic elastomers according to claim 5, characterized in that: The top of the clamping frame (6) is provided with symmetrical second electric push rods (705) at equal intervals. The lower ends of the two second electric push rods (705) are fixedly installed with clamping rollers (706). A heating element (704) is installed inside the clamping rollers (706).

7. The cutting device for processing thermoplastic elastomers according to claim 1, characterized in that: The cutting assembly (3) includes a cutting frame (301), and a cutting blade (303) is fixedly installed inside the cutting frame (301) by a telescopic cylinder (302).

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