High-precision cutting device for thermoplastic elastomer

Abstract

The utility model relates to the technical field of thermoplastic elastomers, in particular to a thermoplastic elastomer high-precision cutting device which comprises a cutting machine body and a cutter arranged on the cutting machine body, a supporting plate and a limiting pipe are fixedly installed on the cutting machine body, and the limiting pipe is used for limiting a tubular thermoplastic elastomer in an outward extending mode. The cutting machine body is provided with an anti-adhesion assembly used for preventing adhesion of a notch when the tubular thermoplastic elastomer is cut. By arranging the anti-adhesion assembly, when the tubular thermoplastic elastomer is cut, after the semicircular adsorption ring adsorbs the tubular thermoplastic elastomer to move on the long rod to reach the cutting length, the tubular thermoplastic elastomer is adsorbed and fixed through the adsorption ring and the semicircular adsorption ring to keep the straightening effect and the cutting stability; and the situation that the cutting precision is affected due to the fact that a notch is in an inclined state due to the fact that the tubular thermoplastic elastomer slides or twists under the cutting pressure is prevented, and therefore cutting can be more precise.

Description

Technical Field

[0001] This utility model relates to the field of thermoplastic elastomer technology, and in particular to a high-precision cutting device for thermoplastic elastomers. Background Technology

[0002] Thermoplastic elastomers (TPEs) are polymeric materials that combine the properties of rubber and plastic. They exhibit the elasticity of rubber at room temperature and can be plasticized and molded at high temperatures. They are easy to process, environmentally friendly and non-toxic, and have a comfortable feel. They are widely used in many fields. Extrusion molding is one of the common processing methods for thermoplastic elastomers. For example, when thermoplastic elastomers are used in hydraulic hoses, automotive pipelines, and other fields, they need to be extruded into tubular shapes.

[0003] After extrusion molding, tubular thermoplastic elastomers need to be cut. Conventional cutting equipment gradually feeds the tubular thermoplastic elastomer through the cutter to achieve the cutting. However, during the cutting process, the contact surface between the cutter and the tubular thermoplastic elastomer generates heat due to friction. Especially during high-speed cutting or when the cutter becomes dull, the local temperature rise will accelerate the softening of the material. In addition, the pressure generated by the cutter during cutting causes deformation at the cut, resulting in the upper and lower halves of the cut melting and sticking together, which affects the quality of the cut product.

[0004] To address this, a high-precision cutting device for thermoplastic elastomers is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision cutting device for thermoplastic elastomers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision cutting device for thermoplastic elastomers, comprising a cutting machine body and a cutting tool disposed on the cutting machine body, wherein a support plate and a limiting tube are fixedly installed on the cutting machine body, and the limiting tube is used to limit the outward extension of the tubular thermoplastic elastomer; the cutting machine body is provided with an anti-adhesion component for preventing the cut from forming adhesion during the cutting of the tubular thermoplastic elastomer, the anti-adhesion component comprising an adsorption ring fixedly connected to the limiting tube, a semi-circular adsorption ring on one side of the adsorption ring, and a long rod for inserting into the inner cavity of the tubular thermoplastic elastomer in the middle of the semi-circular adsorption ring.

[0007] Preferably, a semi-circular guide ring is fixedly connected to the semi-circular adsorption ring, and the semi-circular guide ring is in contact with the adsorption ring. The semi-circular guide ring is used to guide the tubular thermoplastic elastic material from the adsorption ring into the semi-circular adsorption ring.

[0008] Preferably, a guide block is fixedly connected to the long rod, the end of the guide block is chamfered, the guide block is used to guide the tubular thermoplastic elastic sleeve to the long rod, and there is a gap between the end of the guide block and the adsorption ring, and the gap is used for the cutting of the blade.

[0009] Preferably, a semi-circular support block is attached to the bottom end of the semi-circular adsorption ring, and a pull plate is fixedly connected to the semi-circular support block.

[0010] Preferably, both the semi-circular adsorption ring and the adsorption ring have adsorption holes, a connecting plate is fixedly connected to the semi-circular adsorption ring, and a vacuum pump is provided on the top of the adsorption ring and the connecting plate. The vacuum pump is used to generate adsorption force between the semi-circular adsorption ring and the adsorption ring.

[0011] Preferably, a first electric slide rail is fixedly installed on the pallet, and a movable plate is fixedly installed on the slider of the first electric slide rail. A second electric slide rail is fixedly installed on the movable plate, and the slider of the second electric slide rail is fixedly connected to the connecting plate.

[0012] Preferably, the pull plate is slidably connected in the movable plate, and the pull plate is fixedly connected to the long rod. An electric push rod is fixedly connected to the movable plate, and the electric push rod is fixedly connected to the pull plate. The long rod is provided with ball bearings.

[0013] The beneficial effects of this utility model are:

[0014] This invention, by setting an anti-adhesion component, allows the tubular thermoplastic elastomer to move along the long rod to the cutting length when being cut, with the semi-circular adsorption ring adsorbing the elastomer. After reaching the cutting length, the adsorption ring and the semi-circular adsorption ring further adsorb and fix the elastomer, maintaining its tautness and cutting stability. This prevents the tubular thermoplastic elastomer from sliding or twisting under cutting pressure, which could cause the cut to be tilted and affect the cutting accuracy, thus making the cutting more precise.

[0015] Meanwhile, the cutting position is located between the end of the guide block and the adsorption ring. The adsorption ring adsorbs and fixes the tubular thermoplastic elastomer, so that the left cut will not deform when the tubular thermoplastic elastomer is subjected to cutting pressure. Even if the friction between the blade and the tubular thermoplastic elastomer causes the temperature to rise and the material at the cut to soften, the cut will not deform and will not melt and stick. At the right cut, due to the limiting effect of the guide block, the guide block is located in the middle of the tubular thermoplastic elastomer. During cutting, the right side of the cut cannot deform much and will not stick at the cut. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a high-precision thermoplastic elastomer cutting device according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of the cutting machine body of a high-precision cutting device for thermoplastic elastomers according to an embodiment of the present invention.

[0019] Figure 3 This invention relates to a high-precision cutting device for thermoplastic elastomers. Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the semi-circular adsorption ring structure of a high-precision thermoplastic elastomer cutting device according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the semi-circular adsorption ring moving state of a high-precision thermoplastic elastomer cutting device according to an embodiment of the present invention.

[0022] The components in the diagram are labeled as follows: 1. Cutting machine body; 2. Cutting tool; 3. Support plate; 4. Limiting tube; 5. Adsorption ring; 6. Semi-circular adsorption ring; 7. Long rod; 8. Semi-circular guide ring; 9. Guide block; 10. Semi-circular support block; 11. Pull plate; 12. Adsorption hole; 13. Connecting plate; 14. Vacuum pump; 15. First electric slide rail; 16. Moving plate; 17. Second electric slide rail; 18. Electric push rod; 19. Ball bearing. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figures 1 to 5 As shown in the figure, a specific embodiment of this utility model provides a high-precision cutting device for thermoplastic elastomers, including a cutting machine body 1 and a cutting tool 2 disposed on the cutting machine body 1. A support plate 3 and a limiting tube 4 are fixedly installed on the cutting machine body 1. The limiting tube 4 is used to limit the outward extension of the tubular thermoplastic elastomer. The cutting machine body 1 is provided with an anti-adhesion component to prevent the cut from sticking together when the tubular thermoplastic elastomer is cut. By setting the anti-adhesion component, the tubular thermoplastic elastomer can be prevented from sticking together due to heat generated by friction between the cutting tool 2 and the tubular thermoplastic elastomer during cutting. This prevents the material from softening and causing the cut to stick together, thereby preventing poor product quality. The anti-adhesion component includes an adsorption ring 5 fixedly connected to the limiting tube 4. A semi-circular adsorption ring 6 is provided on one side of the adsorption ring 5. A long rod 7 for inserting into the inner cavity of the tubular thermoplastic elastomer is provided in the middle of the semi-circular adsorption ring 6.

[0026] like Figures 2 to 4 As shown, specifically, during the use of the cutting machine body 1, the tubular thermoplastic elastomer is placed in the equipment and gradually moves into the limiting tube 4 under the drive of the equipment. The inner cavity of the limiting tube 4 is adapted to the tubular thermoplastic elastomer, thereby limiting it and preventing it from shifting during steady movement. A semi-circular guide ring 8 is fixedly connected to the semi-circular adsorption ring 6, and the semi-circular guide ring 8 is attached to the adsorption ring 5. The semi-circular guide ring 8 is used to guide the tubular thermoplastic elastomer from the adsorption ring 5 into the semi-circular adsorption ring 6. A guide block 9 is fixedly connected to the long rod 7. The end of the guide block 9 is chamfered. The guide block 9 is used to guide the tubular thermoplastic elastomer to be sleeved on the long rod 7. There is a gap between the end of the guide block 9 and the adsorption ring 5, and the gap is used for the cutting blade 2 to cut. A semi-circular support block 10 is attached to the bottom of the semi-circular adsorption ring 6. A pull plate 11 is fixedly connected to the semi-circular support block 10. Figure 3As shown, the tubular thermoplastic elastomer in the limiting tube 4 continues to move gradually into the adsorption ring 5 under the action of the cutting machine body 1, and enters the semi-circular adsorption ring 6 under the guidance of the semi-circular guide ring 8. During this process, the tubular thermoplastic elastomer gradually fits onto the long rod 7 under the guidance of the guide block 9. The chamfered end of the guide block 9 facilitates the smooth movement of the port of the tubular thermoplastic elastomer onto the long rod 7 until the port of the tubular thermoplastic elastomer moves to the right end face of the semi-circular adsorption ring 6, after which the tubular thermoplastic elastomer stops moving.

[0027] At this point, the tubular thermoplastic elastomer is positioned between the semicircular adsorption ring 6 and the semicircular support block 10. It is worth noting that both the semicircular adsorption ring 6 and the semicircular support block 10 are configured to fit the tubular thermoplastic elastomer, allowing it to adhere to these components after being positioned between them. The long rod 7 contains ball bearings 19, and the tubular thermoplastic elastomer is fitted onto the long rod 7. The long rod 7 is designed with a diameter smaller than the inner diameter of the tubular thermoplastic elastomer. The ball bearings 19 on the long rod 7 allow them to fit and adhere to the inner wall of the tubular thermoplastic elastomer. This means that as the tubular thermoplastic elastomer moves along the long rod 7, it does not rub against the long rod 7 but instead rubs against the ball bearings 19, thus reducing the frictional force generated by the tubular thermoplastic elastomer and facilitating its movement along the long rod 7.

[0028] like Figures 2 to 4As shown, specifically, both the semicircular adsorption ring 6 and the adsorption ring 5 have adsorption holes 12. A connecting plate 13 is fixedly connected to the semicircular adsorption ring 6. Vacuum pumps 14 are installed on the top of the adsorption ring 5 and on the connecting plate 13. The vacuum pumps 14 are used to generate adsorption force between the semicircular adsorption ring 6 and the adsorption ring 5. During the above process, the tubular thermoplastic elastomer is located in the semicircular adsorption ring 6 and the adsorption ring 5. At this time, the vacuum pump 14 at the top of the connecting plate 13 generates negative pressure to generate adsorption force. Through the pipe, the semicircular adsorption ring 6 can generate adsorption. The semicircular adsorption ring 6 generates adsorption force outward through the adsorption holes 12 and fixes and adsorbs the part near the end of the tubular thermoplastic elastomer. A first electric slide rail 15 is fixedly installed on the support plate 3, and a moving plate 16 is fixedly installed on the slider in the first electric slide rail 15. A second electric slide rail 17 is installed, and the slider in the second electric slide rail 17 is fixedly connected to the connecting plate 13. When the second electric slide rail 17 is started, the slider can drive the connecting plate 13 to move to the right. The movement of the connecting plate 13 drives the semi-circular adsorption ring 6 and the semi-circular guide ring 8 to move, which can drive the fixedly adsorbed tubular thermoplastic elastomer to move along the long rod 7. During this process, the cutting machine body 1 releases the fixation of the tubular thermoplastic elastomer, thereby ensuring that the tubular thermoplastic elastomer can move steadily along the long rod 7 with the semi-circular adsorption ring 6. When the slider on the second electric slide rail 17 moves to the other end and stops moving, the semi-circular adsorption ring 6 and the tubular thermoplastic elastomer stop moving. Then, by starting the vacuum pump 14 at the top of the adsorption ring 5, the adsorption ring 5 can produce a fixed adsorption effect on the tubular thermoplastic elastomer.

[0029] At this point, the tubular thermoplastic elastomer is simultaneously fixed and adsorbed by the adsorption ring 5 and the semi-circular adsorption ring 6, thus maintaining the stability of the tubular thermoplastic elastomer during the cutting process. This ensures that the tubular thermoplastic elastomer remains taut, resulting in more precise cutting and less error. During the cutting process, the cutting pressure applied by the blade 2 can cause the tubular thermoplastic elastomer to slide or twist, leading to a tilted cut and affecting cutting accuracy. The adsorption ring 5 and the semi-circular adsorption ring 6 adsorb and fix it, maintaining its tautness and effectively preventing the tubular thermoplastic elastomer from sliding or twisting. After the tubular thermoplastic elastomer is fixed in place, the cutting machine body 1 drives the blade 2 downwards. The blade 2 gradually passes between the end of the guide block 9 and the adsorption ring 5, thus completing the cutting of the tubular thermoplastic elastomer. The cutting position is at the guide block. Between the end of 9 and the adsorption ring 5, the adsorption ring 5 adsorbs and fixes the tubular thermoplastic elastomer, so that the left cut will not deform when the tubular thermoplastic elastomer is subjected to cutting pressure. Even if the friction between the cutter 2 and the tubular thermoplastic elastomer causes the temperature to rise and the material at the cut to soften, the cut will not deform and will not melt and stick. At the right cut, due to the limiting effect of the guide block 9, the guide block 9 is located in the middle of the tubular thermoplastic elastomer. During cutting, the cut cannot deform much and will not stick at the cut. Therefore, after the cutter 2 completes the cutting of the tubular thermoplastic elastomer, there will be no sticking at both sides of the cut. Even if the guide block 9 is inside the tubular thermoplastic elastomer and cannot completely fit with it, it can still limit it during cutting. Otherwise, the cut will deform much.

[0030] like Figures 4 to 5 As shown, specifically, the pull plate 11 is slidably connected to the moving plate 16, and the pull plate 11 is fixedly connected to the long rod 7. An electric push rod 18 is fixedly connected to the moving plate 16, and the electric push rod 18 is fixedly connected to the pull plate 11. After one section of the tubular thermoplastic elastomer is cut, it is removed. The first electric slide rail 15 is activated, causing the slider to move the moving plate 16, thereby moving the long rod 7 and the semi-circular suction ring 6, and other components, thus moving the cut-off tubular thermoplastic elastomer to the other end of the first electric slide rail 15. Figure 5As shown, the second electric slide rail 17 is then driven in the reverse direction, causing the semi-circular suction ring 6 to move in the opposite direction, that is, moving the tubular thermoplastic elastomer from the right side to the left side. After the semi-circular suction ring 6 moves to fit against the semi-circular support block 10, the electric push rod 18 is then activated to push the pull plate 11, causing the semi-circular support block 10 and the long rod 7 to move. This causes the long rod 7 to be pulled out from the inside of the tubular thermoplastic elastomer, and the semi-circular support block 10 to move out from the bottom of the tubular thermoplastic elastomer. At this point, the suction of the semi-circular suction ring 6 on the tubular thermoplastic elastomer is released, and the tubular thermoplastic elastomer will automatically fall to the bottom support block under the action of gravity. On plate 3, workers can then pick up the cut tubular thermoplastic elastomer from plate 3, thus completing the cutting of a section of tubular thermoplastic elastomer. In the subsequent process, the first electric slide rail 15 is driven in reverse to move the moving plate 16 and move the semi-circular suction ring 6 and the semi-circular guide ring 8 to the corresponding position with the suction ring 5. Then, the cutting machine body 1 is driven to move the tubular thermoplastic elastomer back into the semi-circular suction ring 6 and the semi-circular support block 10. The cutting process is then repeated to achieve the purpose of gradually and cyclically cutting the tubular thermoplastic elastomer.

[0031] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0032] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-precision cutting device for thermoplastic elastomers, comprising a cutting machine body (1) and a cutting tool (2) disposed on the cutting machine body (1), characterized in that: The cutting machine body (1) is fixedly installed with a tray (3) and a limiting tube (4), and the limiting tube (4) is used to limit the outward extension of the tubular thermoplastic elastomer. The cutting machine body (1) is provided with an anti-adhesion component to prevent the cut from sticking together when cutting the tubular thermoplastic elastomer. The anti-adhesion component includes an adsorption ring (5) fixedly connected to the limiting tube (4). A semi-circular adsorption ring (6) is provided on one side of the adsorption ring (5). A long rod (7) for inserting into the inner cavity of the tubular thermoplastic elastomer is provided in the middle of the semi-circular adsorption ring (6).

2. The high-precision cutting device for thermoplastic elastomers according to claim 1, characterized in that, A semicircular guide ring (8) is fixedly connected to the semicircular adsorption ring (6), and the semicircular guide ring (8) is attached to the adsorption ring (5). The semicircular guide ring (8) is used to guide the tubular thermoplastic elastic material from the adsorption ring (5) into the semicircular adsorption ring (6).

3. The high-precision cutting device for thermoplastic elastomers according to claim 1, characterized in that, A guide block (9) is fixedly connected to the long rod (7). The end of the guide block (9) is chamfered. The guide block (9) is used to guide the tubular thermoplastic elastic sleeve to the long rod (7). There is a gap between the end of the guide block (9) and the adsorption ring (5), and the gap is used for the cutting tool (2) to cut.

4. The high-precision cutting device for thermoplastic elastomers according to claim 1, characterized in that, The bottom end of the semi-circular adsorption ring (6) is fitted with a semi-circular support block (10), and a pull plate (11) is fixedly connected to the semi-circular support block (10).

5. The high-precision cutting device for thermoplastic elastomers according to claim 4, characterized in that, The semicircular adsorption ring (6) and the adsorption ring (5) are both provided with adsorption holes (12). A connecting plate (13) is fixedly connected to the semicircular adsorption ring (6). A vacuum pump (14) is provided on the top of the adsorption ring (5) and the connecting plate (13). The vacuum pump (14) is used to generate adsorption force between the semicircular adsorption ring (6) and the adsorption ring (5).

6. The high-precision cutting device for thermoplastic elastomers according to claim 5, characterized in that, A first electric slide rail (15) is fixedly installed on the pallet (3), and a movable plate (16) is fixedly installed on the slider in the first electric slide rail (15). A second electric slide rail (17) is fixedly installed on the movable plate (16), and the slider in the second electric slide rail (17) is fixedly connected to the connecting plate (13).

7. The high-precision cutting device for thermoplastic elastomers according to claim 6, characterized in that, The pull plate (11) is slidably connected in the movable plate (16), and the pull plate (11) is fixedly connected to the long rod (7). An electric push rod (18) is fixedly connected on the movable plate (16), and the electric push rod (18) is fixedly connected to the pull plate (11). A ball bearing (19) is provided in the long rod (7).

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