Rubber filtering and cutting equipment and method for rubber processing

Abstract

The invention discloses rubber filtering and cutting equipment and method for rubber processing, and relates to the technical field of rubber filtering and cutting equipment.The rubber filtering and cutting equipment comprises a device base, a rubber filtering device is installed at the upper end of the device base, a feeding port is formed in the upper end of the exterior of the rubber filtering device, and a rubber filtering motor is installed on the left side of the rubber filtering device; a discharging plate is installed at the right end of the rubber filtering device, a plurality of discharging holes are evenly formed in the discharging plate at equal intervals, a second hinge piece is arranged at the position, close to the ejector rod, of the cutting device, the second hinge piece is rotationally connected with one end of the ejector rod, and after the driving ring rotates, the first hinge piece rotates relative to the second hinge piece; the first hinge piece applies pressure to one end of the ejector rod, the other end of the ejector rod applies acting force to the second hinge piece, the second hinge piece drives the cutting device and the cutting blade to make contact with the extruded rubber strip in multiple directions, and rapid cutting of the rubber strip is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber filter rubber cutting equipment. More specifically, the present invention relates to a rubber processing filter rubber cutting equipment and its method. Background Art

[0002] High-temperature vulcanized silicone rubber refers to the process in which polysiloxane becomes an elastomer. It is formed by high-temperature vulcanization. It mainly uses high-molecular-weight polymethylvinylsiloxane as raw rubber, mixed with reinforcing fillers, vulcanizing agents, etc., and vulcanized into an elastomer under heating and pressure. The silicone rubber filtration extruder extrudes the filtered silicone rubber into regular strips, and then workers cut appropriate weights of silicone raw materials according to subsequent needs for subsequent processing; Existing filter rubber cutting devices, such as a filter cutting device for silicone rubber with the publication number CN220030424U, include that when using this filter cutting device, the position of the infrared emitter is adjusted according to the required length of the silicone rubber, so that the cutting device can cut silicone rubber of different lengths, improving the cutting effect of the cutting device and reducing the workload of the staff. At the same time, with the cooperation of the scale groove, the cutting length can be made more accurate; However, most of the existing rubber cutting devices cut from one direction, resulting in a large cutting stroke and a long cutting time. Moreover, the existing cutting methods mostly use a fixed cutting edge to contact the rubber strip and cut the rubber by pressure, making the cross-section of the rubber easily deformed by extrusion, and subsequent removal of the deformed cross-section is required, thus increasing the processing cost of the rubber. Summary of the Invention

[0003] The present invention aims to solve the technical problems in the prior art, such as a large cutting stroke, a long cutting time, and cutting the rubber by pressure, which makes the cross-section of the rubber easily deformed.

[0004] The objectives and effects of the present invention are achieved by the following specific technical means: A rubber processing rubber filtering and cutting device, including a device base, a rubber filtering device is installed at the upper end of the device base, a feeding port is installed at the upper outer part of the rubber filtering device, a rubber filtering motor is installed on the left side of the rubber filtering device, an installation plate is arranged on the upper end of the device base corresponding to the right side of the rubber filtering device, a discharge plate is installed at the right end of the rubber filtering device, a plurality of discharge holes are evenly and equidistantly arranged on the discharge plate, a cutting device is installed at the edge corresponding to the circular through hole inside the installation plate, one end of the cutting device is provided with a rotating part, the rotating part is arranged in a disc shape, shafts are arranged at the centers of the two outer sides of the rotating part, the outer ends of the shafts extend into the inside of the installation plate, and the cutting device can rotate around the shafts as the center, a cutting blade is installed on the side of the cutting device facing the middle of the installation plate, a cavity for the cutting blade to move is arranged inside the cutting device, one side of the cutting blade penetrates out of the inside of the cutting device and is provided with a serrated part, and the serrated part is evenly distributed along one side of the cutting blade. A rotating groove is arranged inside the installation plate corresponding to the outside of the rotating part, the rotating groove is in an arc shape, convex teeth are arranged on the inner side of the rotating groove, one end of the cutting blade is connected with an extension rod, a driving ring is arranged inside the installation plate, a driving motor is arranged inside the device base and is connected with a driving shaft rod, an inner groove is arranged on the inner side of the driving ring, a first hinge is connected to the inner side of the inner groove, a top rod is rotatably connected to the first hinge, the other end of the top rod extends towards the outside of the cutting device, and a second hinge is arranged at the position where the cutting device is close to the top rod, and the second hinge is rotatably connected to one end of the top rod.

[0005] Further, a circular through hole is arranged inside the installation plate, and the discharge plate corresponds to the through hole of the installation plate.

[0006] Further, the cutting device is arranged in a long strip shape, and a plurality of cutting devices are arranged at equal intervals along the circumference of the edge of the circular through hole of the installation plate.

[0007] Further, a sliding strip is arranged on the other side of the cutting blade opposite to the serrated part, the sliding strip is arranged in a long strip shape, and a sliding groove matched with the sliding strip is arranged inside the cutting device.

[0008] Further, the convex teeth are in the shape of an obtuse triangle, and a plurality of convex teeth are arranged at equal intervals along the inner wall circumference of the rotating groove.

[0009] Further, the extension rod penetrates into the inside of the rotating part, one end of the extension rod is in the shape of an obtuse triangle, and penetrates out of the inside of the rotating part and contacts the convex teeth.

[0010] Further, a circumferentially equidistant tooth groove is arranged on the outer side of the driving ring, a driving shaft rod is installed inside the device base corresponding to the lower side of the driving ring, and the outer side of the driving shaft rod is engaged with the tooth groove on the outer side of the driving ring.

[0011] Further, a limiting groove is provided inside the rotating part corresponding to one side of the extension rod. A return spring is placed inside the limiting groove. A limiting block is provided on one side of the extension rod, and one end of the limiting block enters the inside of the limiting groove.

[0012] A method for a rubber processing rubber filtering and cutting device, the steps are as follows; First step, put the rubber filtering raw material into the rubber filtering device from the feeding port, start the rubber filtering motor, and drive the internal structure through the rubber filtering motor to perform rubber filtering work; Second step, extrude the rubber material from the discharge plate so that the rubber material forms the required strip shape; Third step, a cutting device is provided inside the mounting plate. A second hinge is provided outside the cutting device. A driving ring is also installed inside the mounting plate; Fourth step, drive the driving ring to rotate through the drive shaft rod, so that the first hinge can apply pressure to one end of the ejector rod; Fifth step, after the ejector rod can be pushed by the first hinge to rotate, apply a force to the second hinge, so that the cutting device rotates inward with the rotating part as the center; Sixth step, a rotating groove is provided inside the mounting plate, and a convex block is provided inside the rotating groove. When the cutting device rotates, one end of the extension rod can contact the convex block to drive the cutting blade to move intermittently; Seventh step, use the cutting blade and the serrated part to move intermittently on the outside of the rubber strip, so as to complete the efficient cutting of the rubber strip. Beneficial effects

[0013] A rubber processing rubber filtering and cutting device and its method have the following beneficial effects: 1. A cutting device is installed inside the mounting plate corresponding to the edge of the circular through hole. The cutting device is arranged in a long strip shape. A plurality of cutting devices are arranged at equal intervals in a circle on the edge of the circular through hole of the mounting plate. One end of the cutting device is provided with a rotating part. The rotating part is arranged in a disc shape. Shaft bodies are provided at the centers of the outer sides of the rotating part. The outer ends of the shaft bodies extend into the inside of the mounting plate. The cutting device can rotate with the shaft body as the center. A cutting blade is installed on one side of the cutting device facing the middle of the mounting plate. When the cutting blade moves towards the center of the mounting plate, it can contact the extruded rubber strip to complete cutting.

[0014] 2. There is a driving ring inside the mounting plate. There are equally spaced tooth grooves on the outer side of the driving ring. A driving shaft rod is installed inside the device base corresponding to the lower side of the driving ring. The outer side of the driving shaft rod is engaged with the tooth grooves on the outer side of the driving ring. A driving motor is arranged inside the device base and connected to the driving shaft rod. There is an inner groove on the inner side of the driving ring. A first hinge is connected to the inner side of the inner groove. A top rod is rotatably connected to the first hinge. The other end of the top rod extends outward from the cutting device. A second hinge is arranged at the position where the cutting device is close to the top rod. The second hinge is rotatably connected to one end of the top rod. Then, when the driving ring rotates, the first hinge rotates relative to the second hinge, so that the first hinge applies a pressure to one end of the top rod, and the other end of the top rod applies a force to the second hinge, causing the second hinge to drive the cutting device and the cutting blade to contact the extruded rubber strip from multiple directions, completing the rapid cutting of the rubber strip.

[0015] 3. There is a cavity for the cutting blade to move inside the cutting device. One side of the cutting blade passes through the inside of the cutting device and is provided with a serrated part. The serrated part is evenly distributed along one side of the cutting blade. A sliding strip is arranged outside the other side of the cutting blade opposite to the serrated part. The sliding strip is arranged in a long strip shape. A sliding groove matching the sliding strip is arranged inside the cutting device, so that the cutting blade can slide inside the cutting device. Among them, a rotating groove is arranged inside the mounting plate corresponding to the outside of the rotating part. The rotating groove is arc-shaped. Convex teeth are arranged inside the rotating groove. The convex teeth are in the shape of a triangular obtuse angle, and a plurality of convex teeth are arranged at equal intervals along the inner wall circumference of the rotating groove. One end of the cutting blade is connected with an extension rod. The extension rod penetrates into the inside of the rotating part. One end of the extension rod is in the shape of a triangular obtuse angle and passes through the inside of the rotating part and contacts the convex teeth. A limiting groove is arranged inside the rotating part corresponding to one side of the extension rod. A return spring is placed inside the limiting groove. A limiting block is arranged on one side of the extension rod. One end of the limiting block enters the inside of the limiting groove. Then, when the rotating part and the cutting device rotate together, one end of the extension rod can continuously contact the convex block, so that the extension rod is driven by the inclined surface of the convex block to move inward and is driven by the return spring to reset, achieving the effect of intermittently moving the cutting blade to cut the rubber strip by using the serrated part and avoiding the deformation of the rubber strip under pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic external view of the whole of the present invention.

[0017] Figure 2 It is a schematic cross-sectional view of the inner side of the mounting plate of the present invention.

[0018] Figure 3 It is a schematic cross-sectional view of the front of the inner side of the mounting plate of the present invention.

[0019] Figure 4 For the present invention Figure 3 The enlarged schematic view at A in

[0020] Figure 5 For the present invention Figure 4 The enlarged schematic view at position B in

[0021] Figure 6 The three-dimensional schematic view of the cutting device of the present invention

[0022] Figures 1-6 Wherein: 1 - device base, 101 - mounting plate, 102 - material conveying conveyor belt, 2 - rubber filtering device, 201 - feeding port, 202 - rubber filtering motor, 203 - discharge plate, 3 - return spring, 4 - driving ring, 401 - inner groove, 402 - first hinge, 5 - driving shaft rod, 6 - cutting device, 601 - rotating part, 602 - second hinge, 603 - limiting groove, 7 - ejector rod, 8 - sliding bar, 9 - cutting blade, 901 - serrated part, 902 - extension rod, 10 - limiting block, 11 - shaft body, 12 - rotating groove, 1201 - convex teeth Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention

[0024] Referring to Figures 1-6 FIG. A rubber processing rubber filtering and cutting device, including a device base 1, a rubber filtering device 2 is installed at the upper end of the device base 1, a feeding port 201 is installed at the upper outer end of the rubber filtering device 2, a rubber filtering motor 202 is installed on the left side of the rubber filtering device 2, a mounting plate 101 is arranged corresponding to the right side of the rubber filtering device 2 at the upper end of the device base 1, a circular through hole is arranged inside the mounting plate 101, a discharge plate 203 is installed at the right end of the rubber filtering device 2, the discharge plate 203 corresponds to the through hole of the mounting plate 101, a plurality of discharge holes are uniformly arranged at equal intervals on the discharge plate 203, a cutting device 6 is installed corresponding to the edge of the circular through hole inside the mounting plate 101, the cutting device 6 is arranged in a long strip shape, a plurality of cutting devices 6 are arranged at equal intervals on the circumference of the edge of the circular through hole of the mounting plate 101, one end of the cutting device 6 is provided with a rotating part 601, the rotating part 601 is arranged in a disc shape, shaft bodies 11 are arranged at the centers of the outer sides of both sides of the rotating part 601, the outer ends of the shaft bodies 11 extend into the inside of the mounting plate 101, the cutting device 6 can rotate around the shaft body 11 as the center, and a cutting blade 9 is installed on the side of the cutting device 6 facing the middle of the mounting plate 101 In a specific implementation, a cavity for the cutting blade 9 to move is provided inside the cutting device 6. One side of the cutting blade 9 penetrates out of the inside of the cutting device 6, and a serrated portion 901 is provided. The serrated portion 901 is evenly distributed along one side of the cutting blade 9. A sliding bar 8 is provided outside the other side of the cutting blade 9 opposite to the serrated portion 901. The sliding bar 8 is arranged in a long strip shape, and a sliding groove matching the sliding bar 8 is provided inside the cutting device 6; In a specific implementation, a rotating groove 12 is provided inside the mounting plate 101 corresponding to the outside of the rotating portion 601. The rotating groove 12 is arc-shaped, and convex teeth 1201 are provided inside the rotating groove 12. The convex teeth 1201 are in the shape of a triangular obtuse angle, and a plurality of convex teeth 1201 are arranged equidistantly along the inner wall circumference of the rotating groove 12. One end of the cutting blade 9 is connected with an extension rod 902. The extension rod 902 penetrates into the inside of the rotating portion 601. One end of the extension rod 902 is in the shape of a triangular obtuse angle and penetrates out of the inside of the rotating portion 601 to contact the convex teeth 1201. A limiting groove 603 is provided inside the rotating portion 601 corresponding to one side of the extension rod 902. A return spring 3 is placed inside the limiting groove 603. A limiting block 10 is provided on one side of the extension rod 902, and one end of the limiting block 10 enters the inside of the limiting groove 603; In a specific implementation, a driving ring 4 is provided inside the mounting plate 101. Tooth grooves are provided at equal intervals on the outside of the driving ring 4. A driving shaft rod 5 is installed inside the device base 1 corresponding to the lower side of the driving ring 4. The outside of the driving shaft rod 5 is engaged with the tooth grooves on the outside of the driving ring 4. A driving motor is provided inside the device base 1 and is connected with the driving shaft rod 5. An inner groove 401 is provided inside the driving ring 4. A first hinge member 402 is connected inside the inner groove 401. A top rod 7 is rotatably connected to the first hinge member 402. The other end of the top rod 7 extends towards the outside of the cutting device 6. A second hinge member 602 is provided at a position where the cutting device 6 is close to the top rod 7. The second hinge member 602 is rotatably connected to one end of the top rod 7; A method for a rubber processing rubber filtering and cutting device, the steps of which are as follows; In the first step, the rubber filtering raw material is put into the rubber filtering device 2 from the feeding port 201, and the rubber filtering motor 202 is started to drive the internal structure to perform rubber filtering work through the rubber filtering motor 202; In the second step, the rubber material is extruded from the discharge plate 203 to form the required strip shape; In the third step, a cutting device 6 is provided inside the mounting plate 101, a second hinge member 602 is provided outside the cutting device 6, and a driving ring 4 is also installed inside the mounting plate 101; In the fourth step, the driving shaft rod 5 drives the driving ring 4 to rotate, so that the first hinge member 402 can apply pressure to one end of the top rod 7; In the fifth step, after the top rod 7 is pushed by the first hinge member 402 to rotate, it applies a force to the second hinge member 602, causing the cutting device 6 to rotate inwards with the rotating portion 601 as the center; Step 6: Since the mounting plate 101 is provided with a rotating groove 12 and the rotating groove 12 is provided with a convex block 1201, when the cutting device 6 rotates, one end of the extension rod 902 can contact the convex block 1201 to drive the cutting blade 9 to move intermittently; Step 7: By using the intermittent movement of the cutting blade 9 and the serrated portion 901 on the outer side of the rubber strip, the efficient cutting of the rubber strip is completed. Working principle: A cutting device 6 is installed at the edge of the circular through-hole inside the mounting plate 101. The cutting device 6 is arranged in a long strip shape. A plurality of cutting devices 6 are arranged at equal circumferential intervals at the edge of the circular through-hole of the mounting plate 101. One end of the cutting device 6 is provided with a rotating part 601. The rotating part 601 is arranged in a disc shape. Shaft bodies 11 are arranged at the centers of the outer sides of both sides of the rotating part 601. The outer ends of the shaft bodies 11 extend into the inside of the mounting plate 101. The cutting device 6 can rotate around the shaft bodies 11 as the center. A cutting blade 9 is installed on the side of the cutting device 6 facing the middle of the mounting plate 101. When the cutting blade 9 moves towards the center of the mounting plate 101, it can contact the extruded rubber strip to complete cutting. Then, a driving ring 4 is arranged inside the mounting plate 101. Tooth grooves are arranged at equal circumferences on the outer side of the driving ring 4. A driving shaft rod 5 is installed inside the device base 1 corresponding to the lower side of the driving ring 4. The outer side of the driving shaft rod 5 is engaged with the tooth grooves on the outer side of the driving ring 4. A driving motor is arranged inside the device base 1 and is connected to the driving shaft rod 5. An inner groove 401 is arranged on the inner side of the driving ring 4. A first hinge member 402 is connected to the inner side of the inner groove 401. A top rod 7 is rotatably connected to the first hinge member 402. The other end of the top rod 7 extends towards the outside of the cutting device 6. A second hinge member 602 is arranged at the position where the cutting device 6 is close to the top rod 7. The second hinge member 602 is rotatably connected to one end of the top rod 7. When the driving ring 4 rotates, the first hinge member 402 rotates relative to the second hinge member 602, so that the first hinge member 402 applies pressure to one end of the top rod 7, and the other end of the top rod 7 applies a force to the second hinge member 602, so that the second hinge member 602 drives the cutting device 6 and the cutting blade 9 to contact the extruded rubber strip from multiple directions to complete the rapid cutting of the rubber strip. Then, a cavity for the cutting blade 9 to move is arranged inside the cutting device 6. One side of the cutting blade 9 passes through the inside of the cutting device 6 and is provided with a serrated part 901. The serrated part 901 is evenly distributed along one side of the cutting blade 9. A sliding strip 8 is arranged outside the other side of the cutting blade 9 opposite to the serrated part 901. The sliding strip 8 is arranged in a long strip shape. A sliding groove matching with the sliding strip 8 is arranged inside the cutting device 6. The cutting blade 9 can slide inside the cutting device 6. Among them, a rotating groove 12 is arranged inside the mounting plate 101 corresponding to the outside of the rotating part 601. The rotating groove 12 is in an arc shape. Convex teeth 1201 are arranged on the inner side of the rotating groove 12. The convex teeth 1201 are in a triangular obtuse shape, and a plurality of convex teeth 1201 are arranged at equal circumferential intervals along the inner wall of the rotating groove 12. One end of the cutting blade 9 is connected with an extension rod 902. The extension rod 902 penetrates into the inside of the rotating part 601. One end of the extension rod 902 is in a triangular obtuse shape and passes through the inside of the rotating part 601 to contact the convex teeth 1201. A limiting groove 603 is arranged on one side of the rotating part 601 corresponding to the extension rod 902. A return spring 3 is placed inside the limiting groove 603. A limiting block 10 is arranged on one side of the extension rod 902. One end of the limiting block 10 enters the inside of the limiting groove 603. When the rotating part 601 and the cutting device 6 rotate together,One end of the extension rod 902 can be continuously in contact with the convex block 1201, so that the extension rod 902 is driven by the inclined surface of the convex block 1201 to move inward and is reset by the return spring 3, achieving the effect of intermittently moving the cutting blade 9 to cut the rubber strip with the serrated portion 901 and avoiding the deformation of the rubber strip under pressure.

Claims

1. A rubber processing rubber filtering and cutting device, comprising a device base (1) and a rubber filtering device (2), characterized in that: A rubber filter device (2) is installed at the upper end of the device base (1), a material inlet (201) is installed at the upper end of the outside of the rubber filter device (2), a rubber filter motor (202) is installed on the left side of the rubber filter device (2), a mounting plate (101) is provided at the upper end of the device base (1) corresponding to the right side of the rubber filter device (2), a material discharge plate (203) is installed at the right end of the rubber filter device (2), a cutting device (6) is installed at the edge of the circular through hole inside the mounting plate (101), and the cutting device (6) ) is provided with a rotating portion (601) at one end, the rotating portion (601) being in the shape of a disk, shaft bodies (11) are provided at the center of the circle on both sides of the outside of the rotating portion (601), the outer ends of the shaft bodies (11) extend into the interior of the mounting plate (101), the cutting device (6) can rotate with the shaft body (11) as the center, a cutting blade (9) is installed on one side of the cutting device (6) facing the middle of the mounting plate (101), and a cavity is provided inside the cutting device (6) for the cutting blade (9) to move. One side of the cutting blade (9) passes through the interior of the cutting device (6) and is provided with a sawtooth portion (901); a rotating groove (12) is provided inside the mounting plate (101) corresponding to the outer side of the rotating portion (601); the rotating groove (12) is arc-shaped; a convex tooth (1201) is provided inside the rotating groove (12); one end of the cutting blade (9) is connected to an extension rod (902); a driving ring (4) is provided inside the mounting plate (101); and a driving ring (4) is provided inside the device base (1). The motor is connected to the driving shaft (5); an inner groove (401) is provided on the inner side of the driving ring (4); a first hinge (402) is connected to the inner side of the inner groove (401); a push rod (7) is rotatably connected to the first hinge (402); the other end of the push rod (7) extends toward the outside of the cutting device (6); a second hinge (602) is provided at a position close to the cutting device (6) and the push rod (7); the second hinge (602) is rotatably connected to one end of the push rod (7).

2. A rubber processing rubber filtering and cutting equipment as claimed in claim 1, characterized in that: The outer side of the drive ring (4) is provided with tooth grooves at equal distances from the circumference, and a drive shaft (5) is installed inside the device base (1) corresponding to the lower side of the drive ring (4), and the outer side of the drive shaft (5) is engaged with the tooth grooves on the outer side of the drive ring (4).

3. The rubber processing rubber filtering and cutting equipment according to claim 1, characterized in that: A circular through hole is provided inside the mounting plate (101), and the discharge plate (203) corresponds to the through hole of the mounting plate (101).

4. The rubber processing rubber filtering and cutting equipment according to claim 1, characterized in that: The cutting device (6) is arranged in a long strip shape, and a plurality of the cutting devices (6) are arranged at equal distances on the edge circumference of the circular through hole of the mounting plate (101).

5. The rubber processing rubber filtering and cutting equipment according to claim 1, characterized in that: A sliding bar (8) is arranged on the outside of the other side of the cutting blade (9) opposite to the sawtooth portion (901); the sliding bar (8) is arranged in a long strip shape; and a sliding groove matching the sliding bar (8) is arranged inside the cutting device (6).

6. The rubber processing rubber filtering and cutting equipment according to claim 1, characterized in that: The convex teeth (1201) are in the shape of a triangular obtuse angle, and a plurality of convex teeth (1201) are arranged at equal intervals along the circumference of the inner wall of the rotating groove (12); a limiting groove (603) is arranged inside the rotating portion (601) on a side corresponding to the extension rod (902); a return spring (3) is placed inside the limiting groove (603); and a limiting block (10) is arranged on one side of the extension rod (902).

7. A rubber processing rubber filtering and cutting device as claimed in claim 8, characterized in that: The extension rod (902) penetrates into the interior of the rotating part (601); one end of the extension rod (902) is in a triangular obtuse shape and penetrates out of the interior of the rotating part (601) to contact the convex tooth (1201).

8. A rubber processing rubber filtering and cutting equipment method as described in claims 1-7, wherein the steps are: The first step is to put the rubber filtering raw materials into the rubber filtering device (2) from the material inlet (201), start the rubber filtering motor (202), and drive the internal structure to perform the rubber filtering operation through the rubber filtering motor (202); The second step is to extrude the rubber material from the discharge plate (203) so that the rubber material is formed into a desired strip shape; The third step is to arrange a cutting device (6) on the inner side of the mounting plate (101), and to arrange a second hinged member (602) on the outer side of the cutting device (6), and to also install a driving ring (4) on the inner side of the mounting plate (101); Step 4: driving the driving ring (4) to rotate by driving the shaft (5), so that the first hinge (402) can apply pressure to one end of the push rod (7); Step 5: After the push rod (7) is pushed and rotated by the first hinge (402), a force is applied to the second hinge (602), so that the cutting device (6) rotates inward with the rotating part (601) as the center; Step 6: By providing a rotating groove (12) in the mounting plate (101), and providing a protrusion (1201) in the rotating groove (12), when the cutting device (6) rotates, one end of the extension rod (902) can contact the protrusion (1201), thereby driving the cutting blade (9) to move intermittently; In the seventh step, the cutting blade (9) and the sawtooth portion (901) are intermittently moved on the outer side of the rubber strip, thereby completing efficient cutting of the rubber strip.

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