Rubber cutting device for manufacturing and processing polyurethane tires

Abstract

The invention relates to the technical field of rubber cutting equipment, and discloses a rubber cutting device for polyurethane tire manufacturing and processing, the rubber cutting device comprises a supporting frame, a discharging assembly, a lifting assembly and a sliding rail are arranged on the supporting frame, a pressing roller assembly, a cutter assembly and a material moving assembly are sequentially connected to the sliding rail, the pressing roller assembly is located on the side close to the lifting assembly, and the cutter assembly is located on the side close to the lifting assembly. The pressing roller assembly is located above the lifting assembly, a front pressing roller is arranged at the bottom of the pressing roller assembly, and the height of the front pressing roller can be adjusted. According to the rubber cutting device for manufacturing and processing the polyurethane tire, when a large rubber block is cut into pieces, the distance between the cutting knife and the top of the rubber block is always equal, so that the thicknesses of the rubber pieces are always the same during cutting, meanwhile, a rear pressing roller and a front pressing roller are arranged in front of and behind the cutting knife respectively, and the rear pressing roller and the front pressing roller apply proper pressure to the rubber block; the residual rubber blocks are prevented from synchronously moving along with the cutting knife, so that the rubber blocks are prevented from being deformed, and the thickness uniformity of the cut rubber sheets is further ensured.

Description

Technical Field

[0001] The present application relates to the technical field of rubber cutting equipment, and in particular to a rubber cutting device for polyurethane tire manufacturing and processing. Background Art

[0002] Polyurethane rubber raw materials are usually provided in the form of large blocks or rolls. In tire production, different production process links have specific requirements for the size of polyurethane rubber raw materials. Before mixing, the polyurethane rubber raw materials need to be cut into smaller blocks or strips. In order to ensure the uniformity of mixing, the size of the rubber blocks cut into blocks or strips needs to be relatively consistent.

[0003] When the polyurethane rubber raw material is in a large block, it is necessary to cut the large block into slices first, and then cut the slices into smaller blocks or strips. However, since polyurethane rubber has good elasticity and light weight, when cutting a large block of rubber into slices, as the thickness of the rubber decreases, the remaining rubber may be greatly deformed under the force of the cutting knife, making the thickness of the cut rubber sheet different, and then making the size of the rubber block further divided into blocks or strips different.

[0004] When a large block of rubber is cut into slices, the position of the film changes significantly, whether it is cut horizontally or vertically, and it needs to be reorganized and positioned during subsequent cutting, which increases the design difficulty of automated cutting. Summary of the invention

[0005] The present application proposes a rubber cutting device for polyurethane tire manufacturing and processing. When a large rubber block is cut into slices, the distance between the cutting knife and the top of the rubber block is always equal. At the same time, a rear pressure roller and a front pressure roller are respectively provided in front and behind the cutting knife. The rear pressure roller and the front pressure roller apply appropriate pressure to the rubber block to avoid the remaining rubber block from moving synchronously with the cutting knife, thereby ensuring that the thickness of the cut rubber slice is uniform.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a rubber cutting device for polyurethane tire manufacturing and processing, comprising a support frame, on which a material discharge component, a lifting component and a sliding rail are arranged, the material discharge component is located on one side of the lifting component, the material discharge component can convey the rubber material to be cut placed thereon to the lifting component, and the lifting component moves up and down, a sliding rail is arranged above the lifting component, and a pressure roller component, a cutter component and a material moving component are connected to the sliding rail in sequence, the pressure roller component is located on a side close to the lifting component, and the cutter component, the pressure roller component and the material moving component are movable with the sliding rail The cutting tool assembly is dynamically connected, and a driving device capable of driving the cutting tool assembly, the pressure roller assembly and the material shifting assembly to move is arranged on the sliding rail. A cutting tool is arranged at the bottom of the cutting tool assembly, and the pressure roller assembly is located above the lifting assembly. A front pressure roller is arranged at the bottom of the pressure roller assembly, and the height of the front pressure roller can be adjusted. When the lifting assembly moves upward with the rubber material to be cut, the top of the rubber material to be cut contacts with the pressure roller assembly and stops moving. The cutting tool assembly moves sideways to cut the rubber material to be cut. At the same time, the pressure roller assembly and the material shifting assembly move synchronously with the cutting tool assembly when the cutting tool assembly cuts the rubber material to be cut. The material shifting assembly is used to collect the cut film.

[0007] Furthermore, the lifting assembly is provided with a first baffle and a second baffle, the second baffle is located relative to the direction in which the rubber material to be cut is pushed into the discharge assembly, the second baffle extends into the discharge assembly, and the first baffle is located relative to the direction in which the pushing member is extended.

[0008] Furthermore, the first baffle is connected to the lifting plate through an adjusting rod, the adjusting rod is movably connected to the lifting plate, and the adjusting rod is fixedly connected to the first baffle. When the lifting plate descends, the bottom of the adjusting rod contacts the support frame and stops moving. The first baffle is lifted up by the adjusting rod, and a large gap is left between the first baffle and the upper surface of the lifting plate, so that the remaining rubber can fall from the gap.

[0009] Furthermore, the material moving assembly comprises a moving block, which moves independently relative to the cutter assembly. A rear pressure roller is provided at the bottom of the moving block, which is elastic and can move along the remaining rubber material.

[0010] Furthermore, the moving block is also movably connected with a flip box, which moves with the cutter assembly. An output belt is provided under the sliding rail, and a transfer rack is provided on the output belt. The transfer rack includes a transfer box, which can rotate relative to the output belt. A second side panel is provided at the front end of the transfer box, and the end is open. A first side panel is provided at the end of the flip box to prevent the film from falling from the end. When the flip box moves out of the range of the rubber material to be cut, the flip box rotates, and at the same time, the transfer rack rotates to make the flip box and the transfer box parallel, and the flip box and the transfer rack maintain an angle of 45 to 90 degrees. After the transfer rack contacts the flip box, the transfer rack and the flip box rotate synchronously until the film is transferred to the transfer rack. After the flip box is reset, the material moving assembly starts the next cutting process, and the transfer rack continues to rotate until the film falls on the output belt and is transported away with the output belt.

[0011] Furthermore, a rubber pushing port is provided at the end of the flip box, and an inclined plate is provided at the position corresponding to the rubber pushing port on the middle rotating frame. When the middle rotating frame and the flip box rotate synchronously, the inclined plate is gradually inserted into the rubber pushing port.

[0012] Furthermore, a ramp is provided above the cutting knife, and the ramp is detachably connected to a lifting column through magnetic force. An electromagnet is provided inside the ramp, and the diameter of the lifting column is greater than the height of the ramp. When the cutting knife assembly reaches the set position, the ramp is powered off for a set period of time and then powered on again.

[0013] Furthermore, the opposing surfaces of the cutter assembly and the pressure roller assembly are attracted together by magnetic force, and the pressure roller assembly moves along with the cutter assembly. A limiting structure is provided on the sliding rail, and the pressure roller assembly is separated from the cutter assembly after being blocked by the limiting structure. The limiting structure prevents the pressure roller assembly from moving out of the range of the lifting assembly along with the movement of the cutter assembly.

[0014] Furthermore, a rotating column is provided at the bottom of the transfer box, the rotating column at the end can rotate actively, and a thread is provided on the rotating column.

[0015] The beneficial effects of the present invention are as follows: The present application provides a rubber cutting device for polyurethane tire manufacturing and processing. When cutting a large rubber block into slices, the distance between the cutting knife and the top of the rubber block is always equal, so that the thickness of the rubber sheet is always the same during cutting. At the same time, a rear pressure roller and a front pressure roller are respectively provided in front and behind the cutting knife. The rear pressure roller and the front pressure roller apply appropriate pressure to the rubber block to prevent the remaining rubber block from moving synchronously with the cutting knife and causing the rubber block to deform, thereby further ensuring that the thickness of the cut rubber sheet is uniform.

[0016] The position of the cut film changes little, and after being transferred and sorted by the transfer rack, it is output at a specific position angle, which is convenient for the subsequent cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work: Figure 1 It is a schematic diagram of the present invention; Figure 2 A top view of the present invention; Figure 3 is a side view of the present invention; Figure 4 It is a front view of the material transfer group and the intermediate transfer rack in the present invention; Figure 5 For the present invention Figure 2 A magnified view of middle; Figure 6 It is a side view of the transfer rack in the present invention.

[0018] In the figure: 1. support frame; 2. material discharge assembly; 21. material discharge frame; 22. slide-in roller; 23. side sliding roller; 24. pushing member; 3. lifting assembly; 31. lifting plate; 32. driving member; 33. guide rod; 34. second baffle; 35. first baffle; 36. adjustment rod; 4. sliding rail; 5. cutter assembly; 6. pressure roller assembly; 7. material transfer assembly; 71. moving block; 72. rear pressure roller; 73. flip box; 74. first side plate; 8. output belt; 9. inclined table; 10. transfer frame; 101. transfer box; 102. rotating column; 103. inclined plate; 104. second side plate; 11. rubber material to be cut; 12. lifting column. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] For example, see Figure 1-Figure 3 A rubber cutting device for manufacturing and processing polyurethane tires, comprising a support frame 1, on which a material discharge component 2, a lifting component 3 and a sliding rail 4 are arranged, and the material discharge component 2 is located on one side of the lifting component 3, see Figure 2The discharge assembly 2 includes a discharge frame 21 fixedly connected to the support frame 1, and a sliding roller 22 is movably connected to the discharge frame 21. Large pieces of rubber are pushed onto the sliding roller 22 to be cut. A pushing member 24 is provided on one side of the discharge assembly 2. The pushing member 24 pushes the large rubber block into the lifting assembly 3. In order to facilitate the pushing of the rubber block, the support frame 1 is also connected to a side sliding roller 23, and the side sliding roller 23 can be raised and lowered. When it is necessary to push the rubber block, the side sliding roller 23 rises, and after lifting the rubber block, the pushing member 24 pushes it again. When the rubber block is in place, the pushing member 24 descends and resets again, so as not to interfere with the entry of the next piece of rubber to be cut.

[0021] The lifting assembly 3 includes a guide rod 33 fixedly connected to the support frame 1, and the guide rod 33 is movably connected to the lifting plate 31. The lifting plate 31 moves up and down along the guide rod 33. When the lifting plate 31 is at the lowest point, its upper surface is lower than the upper surface of the discharge assembly 2, which is convenient for the rubber block to enter. The lifting plate 31 is movably connected to a driving member 32, and the driving member 32 drives the lifting plate 31 to move up and down. In this embodiment, the driving member 32 is a screw rod. In other embodiments, the driving member 32 can also be a cylinder or a linear motor. The lifting plate 31 is provided with a first baffle 34 and The second baffle 35 is located relative to the direction in which the rubber material to be cut is pushed into the discharge assembly 2. The second baffle 35 extends to one side of the slide-in roller 22. When the rubber material to be cut is pushed into the discharge assembly 2, the second baffle 35 blocks the rubber material so that the position in which the rubber material to be cut is pushed is relatively consistent. The first baffle 34 is located relative to the direction in which the pusher 24 is extended and retracted. The first baffle 34 makes the position in which the rubber material to be cut is pushed into the lifting assembly 3 consistent. The support frame 1 has a gap for the lifting position of the lifting plate 31, and the rubber material to be cut can be lifted and lowered from the gap.

[0022] A sliding rail 4 is provided above the lifting assembly 3, and a pressure roller assembly 6, a cutter assembly 5 and a material moving assembly 7 are sequentially connected to the sliding rail 4. The pressure roller assembly 6 is located on a side close to the lifting assembly 3, and the cutter assembly 5, the pressure roller assembly 6 and the material moving assembly 7 are movably connected to the sliding rail 4. A driving device capable of driving the cutter assembly 5, the pressure roller assembly 6 and the material moving assembly 7 to move is provided on the sliding rail 4. The cutter assembly 5 is provided with a cutting knife. In this embodiment, the driving device is a screw rod, and the screw rod is hidden in the sliding rail 4 ( Figure 1-Figure 3 (not shown), in other embodiments, the driving device may also be a cylinder or a linear motor.

[0023] See also Figure 4The pressure roller assembly 6 is located above the notch, and a front pressure roller is provided at the bottom of the pressure roller assembly 6. The height of the front pressure roller can be adjusted. When the lifting assembly 3 moves upward with the rubber material 11 to be cut, the top of the rubber material 11 to be cut contacts the pressure roller assembly 6 and stops moving. A pressure sensor is provided on the pressure roller. When the pressure sensor sensing value is greater than the threshold value, the lifting assembly 3 is triggered to stop rising, so that the height of the rubber material 11 to be cut after rising is always consistent, and then the height difference of the rubber material 11 to be cut relative to the cutting plane of the cutter assembly 5 is always consistent, ensuring the same cutting thickness. The cutting thickness is adjusted by adjusting the height of the pressure roller. When cutting When the knife assembly 5 moves, the cutter assembly 5 pushes the pressure roller assembly 6 to move, and the front pressure roller rolls on the surface of the rubber material 11 to be cut. The pressure roller assembly 6 applies appropriate pressure to the rubber material 11 to be cut, so that the remaining rubber block will not be pushed and deformed by the cutter assembly 5, thereby ensuring consistent cutting thickness. The opposite surfaces of the cutter assembly 5 and the pressure roller assembly 6 are attracted together by magnetic force, and the pressure roller assembly 6 moves with the cutter assembly 5. A limiting structure is provided on the sliding rail 4. The pressure roller assembly 6 is separated from the cutter assembly 5 after being blocked by the limiting structure. The limiting structure can ensure that the pressure roller assembly 6 will not move out of the gap range with the movement of the cutter assembly 5.

[0024] The first baffle 34 is connected to the lifting plate 31 through an adjusting rod 36, and the adjusting rod 36 is movably connected to the lifting plate 31, and the adjusting rod 36 is fixedly connected to the first baffle 34. When the lifting plate 31 rises, the first baffle 34 sticks to the upper surface of the lifting plate 31, and can block the movement of the rubber material 11 to be cut. When the lifting plate 31 descends, the bottom of the adjusting rod 36 contacts the support frame 1 and stops moving. The first baffle 34 is lifted up by the adjusting rod 36, and a large gap is left between the first baffle 34 and the upper surface of the lifting plate 31. When the next rubber material 11 to be cut is hit by the top lifting component 3, the lifting component 3 squeezes the remaining rubber material that is easy to deform and difficult to cut out from the gap.

[0025] The material moving assembly 7 includes a moving block 71, which moves independently relative to the cutter assembly 5. The screw rods driving the moving block 71 and the cutter assembly 5 are hidden on both sides of the sliding rail 4 respectively. The pressure roller assembly 6 moves with the cutter assembly 5. A rear pressure roller 72 is provided at the bottom of the moving block 71. The rear pressure roller 72 is elastic and the bottom is slightly lower than the lowest point of the cutter assembly 5. When the cutter assembly 5 separates the rubber block, the rear pressure roller 72 then presses the separated position to apply appropriate force to the rubber material to prevent the rear side rubber material from being pulled and deformed by the cutter assembly 5.

[0026] The moving block 71 is also movably connected to a flip box 73, which moves with the cutter assembly 5. The cut film will fall into the flip box 73. When the film is completely cut, the cutter assembly 5 and the material moving assembly 7 move in opposite directions, and the flip box 73 moves the cut rubber away. An output belt 8 is provided under the sliding rail 4, and the rubber falls from the material moving assembly 7 onto the output belt 8 and is transported away by the output belt 8.

[0027] Since the rubber material falls from the material transfer assembly 7 to the output belt 8, the position is uncertain, which is not convenient for the next cutting process. A transfer rack 10 is provided on the output belt 8. The transfer rack 10 includes a transfer box 101. The transfer box 101 can rotate relative to the output belt 8. A rotating column 102 is provided at the bottom of the transfer box 101. A second side plate 104 is provided at the front end of the transfer box 101. The flip box 73 is movably connected to the moving block 71. The flip box 73 can rotate relative to the moving block 71. The end of the flip box 73 is provided with a first side plate 74. The end refers to the direction of rubber material output. The front end is opposite to the end. The first side plate 74 can block the film to prevent the film from falling from the end. After the box 73 moves out of the notch range, the flip box 73 rotates, and the transfer rack 10 rotates at the same time, so that the flip box 73 and the transfer box 101 are parallel, and the transfer box 101 maintains 45 to 90 degrees, and the film will not be flipped and fall. After the transfer box 101 contacts the flip box 73, the material moving assembly 7 continues to move, and the transfer rack 10 and the flip box 73 rotate synchronously until the film is transferred to the transfer box 101. The transfer box 101 continues to rotate. At this time, the film naturally pours over and falls on the transfer rack 10, and as the transfer rack 10 rotates, the transfer rack 10 continues to rotate below the horizontal, and the film slides from the transfer rack 10 to the output belt 8 and is transported away with the output belt 8.

[0028] See also Figure 5 and Figure 6 A rubber pushing port 75 is provided at the end of the flip box 73, and an inclined plate 103 is provided at the position of the rubber pushing port 75 of the transfer box 101. When the transfer box 101 and the flip box 73 are parallel, as the two rotate synchronously, the first side plate 74 gradually approaches the inclined plate 103. At the same time, the film begins to contact the inclined plate 103, and the inclined plate 103 lifts the film and pushes the film away from the first side plate 74. The end of the film slides into the transfer box 101 along the inclined plate 103 to ensure that the film can be poured toward the transfer rack 10.

[0029] Since it takes a long time for the material transfer assembly 7 and the intermediate transfer rack 10 to transfer the film, if the cutter assembly 5 moves synchronously with the material transfer assembly 7, the cutting efficiency will be too low. Figure 4, an inclined platform 9 is provided above the cutting knife, and the inclined platform 9 is detachably connected to a lifting column 12 through magnetic force. An electromagnet is provided in the inclined platform 9, and the diameter of the lifting column 12 is greater than the height of the inclined platform 9. When the cutting knife cuts the rubber material 11 to be cut, the film moves along the inclined platform 9 and is placed on the lifting column 12. When the cutting knife assembly 5 reaches the set position, the inclined platform 9 disconnects the power supply, and the inclined platform 9 releases the lifting column 12. The lifting column 12 remains at a position close to the edge of the rubber material 11 to be cut, separating the cut film from the original rubber block. After the material moving assembly 7 transfers the film to the transfer rack 10, the flip box 73 cuts into the separated gap and catches up with the cutting knife assembly 5 while pushing the lifting column 12 toward the inclined platform 9. The inclined platform 9 attracts the lifting column 12 again, and a sensor for sensing the position of the cutting knife assembly 5 is provided on the sliding rail 4. When the cutting knife assembly 5 reaches the set position, the electromagnet in the inclined platform 9 is powered off for a certain period of time, and the lifting column 12 is released.

[0030] See also Figure 6 The rotating column 102 at the end is connected to a motor. The rotating column 102 can rotate actively, and a thread is provided on the rotating column 102. When the rotating column 102 rotates, an appropriate lateral force is applied to the film, so that the film is attached to the side of the transfer box 101. The rotating column 102 actively rotates to apply force to the film to ensure that the film can move smoothly toward the output belt 8. At the same time, the thread causes the film to move laterally to ensure that the position of the film falling on the output belt 8 is relatively consistent.

[0031] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rubber cutting device for manufacturing and processing polyurethane tires, comprising a support frame (1), wherein a material discharge assembly (2), a lifting assembly (3) and a sliding rail (4) are arranged on the support frame (1), wherein the material discharge assembly (2) is located on one side of the lifting assembly (3), and the material discharge assembly (2) can transport the rubber material (11) to be cut placed thereon to the lifting assembly (3), and the lifting assembly (3) moves up and down with the rubber material (11) to be cut, and wherein: A sliding rail (4) is provided above the lifting assembly (3), and a pressure roller assembly (6), a cutter assembly (5) and a material transfer assembly (7) are sequentially connected to the sliding rail (4); the pressure roller assembly (6) is located on a side close to the lifting assembly (3); the cutter assembly (5), the pressure roller assembly (6) and the material transfer assembly (7) are movably connected to the sliding rail (4); a driving device capable of driving the cutter assembly (5), the pressure roller assembly (6) and the material transfer assembly (7) to move is provided on the sliding rail (4); a cutting knife is provided at the bottom of the cutter assembly (5); and the pressure roller assembly (6) is located on a side close to the lifting assembly (3). A front pressure roller is provided at the bottom of the pressure roller assembly (6) above the lifting assembly (3), and the height of the front pressure roller can be adjusted up and down. When the lifting assembly (3) moves upward while holding the rubber material (11) to be cut, the top of the rubber material (11) to be cut contacts the pressure roller assembly (6) and stops moving. The cutter assembly (5) moves sideways to cut the rubber material (11) to be cut. At the same time, the pressure roller assembly (6) and the material transfer assembly (7) move synchronously with the cutter assembly (5) when the cutter assembly (5) cuts the rubber material (11) to be cut. The material transfer assembly (7) is used to collect the cut film.

2. A rubber cutting device for polyurethane tire manufacturing and processing according to claim 1, characterized in that: The lifting assembly (3) is provided with a first baffle (35) and a second baffle (34); the second baffle (34) is located relative to the direction in which the rubber material to be cut is pushed into the material discharge assembly (2); the second baffle (34) extends into the material discharge assembly (2); and the first baffle (35) is located in the direction in which the pusher (24) is extended and retracted.

3. A rubber cutting device for polyurethane tire manufacturing and processing according to claim 2, characterized in that: The first baffle plate (35) is connected to the lifting plate (31) via an adjusting rod (36), the adjusting rod (36) is movably connected to the lifting plate (31), and the adjusting rod (36) is fixedly connected to the first baffle plate (35). When the lifting plate (31) descends, the bottom of the adjusting rod (36) contacts the support frame (1) and stops moving. The first baffle plate (35) is lifted up by the adjusting rod (36), and a large gap is left between the first baffle plate (35) and the upper surface of the lifting plate (31), so that the remaining rubber material can fall from the gap.

4. A rubber cutting device for polyurethane tire manufacturing and processing according to claim 1, characterized in that: The material moving assembly (7) comprises a moving block (71), the moving block (71) moves independently relative to the cutter assembly (5), a rear pressure roller (72) is provided at the bottom of the moving block (71), and the rear pressure roller (72) is elastic and can move along the remaining rubber material.

5. A rubber cutting device for polyurethane tire manufacturing and processing according to claim 4, characterized in that: The moving block (71) is also movably connected to a flip box (73), and the flip box (73) moves with the cutter assembly (5). An output belt (8) is provided below the sliding rail (4), and a transfer rack (10) is provided on the output belt (8). The transfer rack (10) includes a transfer box (101), and the transfer box (101) can rotate relative to the output belt (8). The front end of the transfer box (101) is provided with a second side plate (104), and the end is open. The end of the flip box (73) is provided with a first side plate (74) to prevent the film from falling from the end. When the flip box (73) moves out of the film to be cut, After the film reaches the range of the adhesive, the flip box (73) rotates, and at the same time, the intermediate transfer frame (10) rotates, so that the flip box (73) and the intermediate transfer frame (101) are parallel, and the flip box (73) and the intermediate transfer frame (10) maintain an angle of 45 degrees to 90 degrees. After the intermediate transfer frame (10) contacts the flip box (73), the intermediate transfer frame (10) and the flip box (73) rotate synchronously until the film is transferred to the intermediate transfer frame (10). After the flip box (73) is reset, the material transfer component (7) starts the next cutting process, and the intermediate transfer frame (10) continues to rotate until the film falls on the output belt (8) and is transported along the output belt (8).

6. A rubber cutting device for polyurethane tire manufacturing and processing according to claim 5, characterized in that: The tip of the flip box (73) is provided with a rubber pushing port (75), and the middle rotating frame (10) is provided with an inclined plate (103) at a position corresponding to the rubber pushing port (75). When the middle rotating frame (10) and the flip box (73) rotate synchronously, the inclined plate (103) is gradually inserted into the rubber pushing port (75).

7. A rubber cutting device for polyurethane tire manufacturing and processing according to claim 6, characterized in that: An inclined platform (9) is provided above the cutting knife. The inclined platform (9) is detachably connected to a support column (12) through magnetic force. An electromagnet is provided inside the inclined platform (9). The diameter of the support column (12) is greater than the height of the inclined platform (9). When the cutting knife assembly (5) reaches a set position, the inclined platform (9) is powered off for a set period of time and then powered on again.

8. A rubber cutting device for polyurethane tire manufacturing and processing according to claim 7, characterized in that: The opposing surfaces of the cutter assembly (5) and the pressure roller assembly (6) are attracted together by magnetic force, and the pressure roller assembly (6) moves along with the movement of the cutter assembly (5). A limiting structure is provided on the sliding rail (4), and the pressure roller assembly (6) is separated from the cutter assembly (5) after being blocked by the limiting structure. The limiting structure prevents the pressure roller assembly (6) from moving out of the range of the lifting assembly (3) along with the movement of the cutter assembly (5).

9. A rubber cutting device for polyurethane tire manufacturing and processing according to claim 8, characterized in that: A rotating column (102) is provided at the bottom of the transfer box (101); the rotating column (102) at the end is capable of actively rotating, and a thread is provided on the rotating column (102).

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