Cutting device for ceramic tile processing

Abstract

The utility model discloses a cutting device for ceramic tile processing in the technical field of ceramic tile processing, which comprises a bottom plate, mounting frames are symmetrically welded on one side of the top of the bottom plate, and a feeding mechanism for feeding and cutting ceramic tiles is arranged between the adjacent mounting frames. The ceramic tile cutting device comprises a feeding mechanism, a conveying mechanism is arranged on one side of the feeding mechanism, and the conveying mechanism is matched with the feeding mechanism to work and used for conveying and cutting ceramic tiles. According to the ceramic tile cutting device, the conveying mechanism can convey ceramic tiles into the next step of cutting operation, the ceramic tiles do not need to be manually placed below a cutting knife for cutting operation, labor force is reduced, and the working efficiency is improved; therefore, the situation that tracks of the ceramic tiles deviate in the conveying process, and normal proceeding of follow-up cutting operation is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tile processing, in particular to a cutting device for tile processing. Background Art

[0002] Ceramic tiles are a type of acid- and alkali-resistant porcelain or stone building or decorative material made from refractory metal oxides and semi-metal oxides through a process of grinding, mixing, pressing, glazing, and sintering. The raw materials are typically clay and quartz sand, mixed at high temperatures and compressed, resulting in a very high hardness.

[0003] In the process of processing ceramic tiles, a cutting device is required to cut them into shapes of different sizes according to the dimensions for later use. However, most of the existing cutting devices for ceramic tile processing require manual movement of the ceramic tiles into the cutting device for cutting, which is time-consuming, labor-intensive and inefficient. Therefore, those skilled in the art provide a cutting device for ceramic tile processing to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the present utility model is to provide a cutting device for processing ceramic tiles, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a cutting device for processing ceramic tiles, comprising a base plate, two sets of mounting frames symmetrically welded to one side of the top of the base plate, the sides of the two sets of mounting frames being provided with a loading mechanism for loading and cutting ceramic tiles, one side of the loading mechanism being provided with a conveying mechanism cooperating therewith for conveying and cutting ceramic tiles, the top of the conveying mechanism being provided with a limiting mechanism for limiting the conveying trajectory of the ceramic tiles being conveyed;

[0006] The lifting mechanism comprises a first motor, a first screw, a sliding rod, a support plate, a first hydraulic rod and a pneumatic suction cup, the first motor is installed on the side of one of the mounting frames by bolts, and the side walls of the two groups of mounting frames are provided with a rectangular groove along the length direction, and the first screw and the sliding rod are respectively provided inside the rectangular groove, one end of the first screw is rotatably connected to one side of the inner wall of the rectangular groove by a bearing seat, the other end of the first screw passes through the mounting frame and is fixedly connected to the output end of the first motor by a rotating shaft. Both ends of the sliding rod are welded to the inner wall of the rectangular groove, and the inside of the rectangular groove is slidably connected to a moving block, one group of the moving blocks is rotatably connected to the first screw by a thread, and the other group of the moving blocks is slidably connected to the sliding rod. One end side surface of the moving block is welded to the side surface of the support plate, and the support plate is fixedly connected to a plurality of first hydraulic rods on the side near the bottom plate, and a pneumatic suction cup is installed on the top of the movable end of the first hydraulic rod, and a conveying mechanism is provided on one side of the pneumatic suction cup;

[0007] The conveying mechanism includes a conveying roller and a second motor. One side of the pneumatic suction cup is provided with an equipment slot located at the top of the bottom plate. The inner wall of the equipment slot is rotatably connected to multiple groups of equally spaced conveying rollers, and the adjacent conveying rollers are connected by a chain transmission. A second motor is installed on one side of the bottom plate by bolts. The output end of the second motor passes through the bottom plate and is fixedly connected to the end of any conveying roller by a rotating shaft. A limiting mechanism is provided on the top of the conveying roller.

[0008] A processing cover located on the top of the base plate is welded to one side of the limiting mechanism, and the top of one side of the processing cover is welded to the side end of the mounting frame. A fixing mechanism for fixing the tiles when cutting is provided on the inner wall side of the processing cover, and a cutting mechanism located on the top of the inner wall of the processing cover is provided above the fixing mechanism.

[0009] Preferably: the limiting mechanism includes a screw rod, a limiting frame, a support rod and a roller, the top of the conveying roller is symmetrically welded with a mounting plate located on the top of the base plate, the middle of the inner part of the mounting plate is rotatably connected to a screw rod through a thread, one end of the screw rod extends to the outside of the mounting plate and is welded with a rotating block, the other end of the screw rod extends to the inside of the mounting plate and is rotatably connected to the side of the limiting frame through a bearing seat, one side of the limiting frame is symmetrically welded with support rods located on both sides of the screw rod, the other end of the support rod passes through the mounting plate and is welded with a limiting block, and the support rods are slidably connected to the mounting plate, and the interior of the limiting frame is rotatably connected to multiple groups of evenly distributed rollers through bearings.

[0010] Preferably: the fixing mechanism includes an electric push rod and a fixing plate, the electric push rods are symmetrically installed on the inner wall side surfaces of the processing cover, the top surfaces of the movable ends of the electric push rods are fixed with fixing plates by screws, and a cutting mechanism is provided above the fixing plate and located on the top of the inner wall of the processing cover.

[0011] Preferably: the cutting mechanism includes a third motor, a second screw, a round rod, a second hydraulic rod of a slide and a cutting assembly, a block located in a rectangular distribution on the top of the inner wall of the processing cover is welded above the fixed plate, and a third motor is installed on the side of one of the blocks, and the output end of the third motor is fixedly connected to the second screw through a rotating shaft, and the other end of the second screw passes through the block and is rotatably connected to the side of the other block through a bearing seat, and both ends of the round rod are welded on both sides of the block away from the second screw, and both ends of the slide are installed on the surfaces of the round rod and the second screw, the slide is slidably connected to the round rod and rotatably connected to the second screw through a thread, and a second hydraulic rod is fixedly installed in the middle of the bottom of the slide, and the movable end of the second hydraulic rod is connected to the cutting assembly.

[0012] Preferably: the cutting assembly includes a fourth motor and a cutting knife, a U-shaped frame is installed on the top of the movable end of the second hydraulic rod by a screw, a fourth motor is installed on one side of the U-shaped frame, the output end of the fourth motor is fixedly connected to a rotating rod through a rotating shaft, one end of the rotating rod passes through the U-shaped frame and is rotatably connected to one side of the inner wall of the U-shaped frame, and a cutting knife is welded on the surface of the rotating rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the utility model, the cutting device for ceramic tile processing is provided with a loading mechanism and a conveying mechanism that cooperate with each other. The loading mechanism can sequentially place the ceramic tiles on the top of the conveying roller in the conveying mechanism, and the conveying mechanism can convey the ceramic tiles to the next cutting operation. There is no need to manually place the ceramic tiles under the cutting knife for cutting operations, which reduces labor and improves work efficiency.

[0015] 2. In the present invention, the cutting device for processing ceramic tiles is provided with a limiting mechanism to limit the trajectory of the ceramic tiles during transportation, thereby avoiding the trajectory of the ceramic tiles being deviated during transportation and affecting the normal progress of subsequent cutting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a first side view of the overall structure of the utility model;

[0018] Figure 3 It is a second side view of the overall structure of the utility model;

[0019] Figure 4 It is an enlarged view of the overall structure of the limiting mechanism of the utility model;

[0020] Figure 5 for Figure 2 A magnified view of center.

[0021] In the figure: 1. Base plate; 2. Mounting frame; 3. Processing cover; 9. Rectangular slot; 10. Equipment slot; 11. Mounting plate; 12. Stop block; 13. U-shaped frame; 41. First motor; 42. First screw; 43. Slide rod; 44. Support plate; 45. First hydraulic rod; 46. Pneumatic suction cup; 47. Moving block; 51. Conveyor roller; 52. Second motor; 61. Screw rod; 62. Limiting frame; 63. Support rod; 64. Roller; 65. Rotating block; 66. Limiting block; 71. Electric push rod; 72. Fixed plate; 81. Third motor; 82. Second screw; 83. Round rod; 84. Slide plate; 85. Second hydraulic rod; 86. Fourth motor; 87. Cutting knife; 88. Rotating rod. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 5 In the embodiment of the present invention, a cutting device for processing ceramic tiles is provided. Two sets of mounting frames 2 are symmetrically welded on one side of the top of the bottom plate 1. A feeding mechanism for loading and cutting ceramic tiles is provided on the sides of the two sets of mounting frames 2. The feeding mechanism includes a first motor 41, a first screw 42, a slide rod 43, a support plate 44, a first hydraulic rod 45 and a pneumatic suction cup 46. The first motor 41 is mounted on the side of one of the mounting frames 2 by bolts. A rectangular groove 9 is opened on the side wall of the two sets of mounting frames 2 along the length direction. A first screw 42 and a slide rod 43 are respectively provided inside the rectangular groove 9. One end of the first screw 42 rotates through a bearing seat. It is dynamically connected to one side of the inner wall of the rectangular groove 9, and the other end of the first screw 42 passes through the mounting frame 2 and is fixedly connected to the output end of the first motor 41 through a rotating shaft. Both ends of the slide rod 43 are welded to the inner wall of the rectangular groove 9, and the inside of the rectangular groove 9 is slidably connected with a moving block 47, one group of moving blocks 47 is connected to the first screw 42 by threaded rotation, and the other group of moving blocks 47 is slidably connected to the slide rod 43, and the side surfaces of one end of the moving block 47 are welded to the side surfaces of the support plate 44, and a plurality of first hydraulic rods 45 are fixedly connected to the side of the support plate 44 close to the bottom plate 1, and a pneumatic suction cup 46 is installed on the top of the movable end of the first hydraulic rod 45.

[0024] During use, the tiles are placed on the top of the base plate 1 in sequence and the first hydraulic rod 45 is started. When the movable end of the first hydraulic rod 45 is extended, the pneumatic suction cup 46 is driven to move down to the top of the tile, and then the pneumatic suction cup 46 is adsorbed by the air pump. After the pneumatic suction cup 46 has stably adsorbed the tile, the first hydraulic rod 45 is controlled to operate again to make its movable end contract, thereby causing the tile to move upward through the pneumatic suction cup 46. Then the first motor 41 is started. When the output end of the first motor 41 rotates, the first screw 42 is driven to rotate accordingly, thereby causing the moving block 47 connected to it to slide inside the rectangular groove 9. When the moving block 47 moves, the support plate 44 is used to make another group of moving blocks 47 slide on the surface of the slide rod 43 and another rectangular groove 9, and then the movement of the support plate 44 drives the first hydraulic rod 45 and the pneumatic suction cup 46 to drive the adsorbed tiles to move and load.

[0025] One side of the pneumatic suction cup 46 is provided with a conveying mechanism that cooperates with it to convey and cut tiles. The conveying mechanism includes a conveying roller 51 and a second motor 52. One side of the pneumatic suction cup 46 is provided with an equipment slot 10 located at the top of the base plate 1. The inner wall of the equipment slot 10 is rotatably connected to multiple groups of equidistantly distributed conveying rollers 51, and adjacent conveying rollers 51 are connected by chain transmission. A second motor 52 is installed on one side of the base plate 1 by bolts. The output end of the second motor 52 passes through the base plate 1 and is fixedly connected to the end of any conveying roller 51 through a rotating shaft.

[0026] During use, when the support plate 44 is moved to move the first hydraulic rod 45 and the pneumatic suction cup 46 to move the adsorbed tiles to the top of the conveyor roller 51, the movable end of the first hydraulic rod 45 is controlled to extend so that the pneumatic suction cup 46 can place the tiles on the top of the conveyor roller 51, and then the pneumatic suction cup 46 is turned off to release its adsorption force on the tiles, and then the second motor 52 is started to drive the conveyor roller 51 connected to it to rotate. While the conveyor roller 51 is rotating, the remaining conveyor rollers 51 are driven to run accordingly through the chain transmission, so that the tiles on the top surface of the conveyor roller 51 can be transported in parallel, so that the tiles finally reach the cutting mechanism, and no manual transportation and placement are required, which reduces labor.

[0027] The top of the conveying roller 51 is provided with a limiting mechanism for limiting the conveying trajectory of the tiles in transport. The limiting mechanism includes a screw rod 61, a limiting frame 62, a support rod 63 and a roller 64. The top of the conveying roller 51 is symmetrically welded with a mounting plate 11 located on the top of the base plate 1. The middle of the inner part of the mounting plate 11 is rotatably connected to the screw rod 61 through a thread. One end of the screw rod 61 extends to the outside of the mounting plate 11 and is welded with a rotating block 65. The other end of the screw rod 61 extends to the inside of the mounting plate 11 and is rotatably connected to the side of the limit frame 62 through a bearing seat. One side of the limit frame 62 is symmetrically welded with support rods 63 located on both sides of the screw rod 61. The other end of the support rod 63 passes through the mounting plate 11 and is welded with a limiting block 66, and the support rod 63 is slidably connected to the mounting plate 11. The interior of the limit frame 62 is rotatably connected to multiple groups of evenly distributed rollers 64 through bearings.

[0028] During use, when the tile is being transported on the top of the conveying roller 51, the screw 61 is rotated by rotating the rotating block 65, so that the limit frame 62 moves toward the side of the tile. When the limit frame 62 moves, it drives the support rod 63 to slide along the inner wall of the mounting plate 11. The support rod 63 is used to provide stable force support for the limit frame 62 to limit the side wall of the tile. The limit block 66 is used to prevent one end of the support rod 63 from detaching from the inner wall of the mounting plate 11 when the limit frame 62 moves. When the limit frame 62 drives the roller 64 to move to contact the side of the tile, the conveying trajectory of the tile can be restricted to prevent the moving trajectory from deviating when being transported on the top of the conveying roller 51, thereby affecting the subsequent cutting operation. The provided roller 64 can reduce the friction between the limit frame 62 and the side of the tile.

[0029] The side of the limit frame 62 away from the pneumatic suction cup 46 is welded with a processing cover 3 located on the top of the base plate 1, and the top end of one side of the processing cover 3 is welded to the side end of the mounting frame 2. The inner wall side of the processing cover 3 is provided with a fixing mechanism for fixing the tiles during cutting. The fixing mechanism includes an electric push rod 71 and a fixing plate 72. The inner wall side of the processing cover 3 is symmetrically installed with electric push rods 71, and the top surface of the movable end of the electric push rod 71 is fixed with a fixing plate 72 by screws. When in use, when the tile is transported to the bottom surface of the inner wall of the processing cover 3 by the conveying roller 51, the electric push rod 71 is started at this time to make its movable end extend, thereby driving the fixing plate 72 to move toward the side of the tile, and then fixing and clamping the side of the tile, so that it will not easily move in the subsequent cutting operation.

[0030] A cutting mechanism is provided above the fixed plate 72 and is located at the top of the inner wall of the processing cover 3. The cutting mechanism includes a third motor 81, a second screw 82, a round rod 83, a slide 84, a second hydraulic rod 85 and a cutting assembly. A rectangular block 12 is welded above the fixed plate 72 and is located at the top of the inner wall of the processing cover 3. A third motor 81 is installed on the side of one of the blocks 12. The output end of the third motor 81 is fixedly connected to the second screw 82 through a rotating shaft. The other end of the second screw 82 passes through the block 12 and is rotatably connected to the side of the other block 12 through a bearing seat. Both ends of the round rod 83 are welded to both sides of the block 12 away from the second screw 82. The round rod 83 and the second screw The surface of 82 is equipped with both ends of a slide 84, the slide 84 is slidingly connected to the round rod 83 and is rotationally connected to the second screw 82 by a thread, and a second hydraulic rod 85 is fixedly installed in the middle of the bottom of the slide 84, and the movable end of the second hydraulic rod 85 is connected to the cutting assembly, which includes a fourth motor 86 and a cutting knife 87. The top of the movable end of the second hydraulic rod 85 is installed with a U-shaped frame 13 by a screw, and a fourth motor 86 is installed on one side of the U-shaped frame 13. The output end of the fourth motor 86 is fixedly connected to a rotating rod 88 through a rotating shaft, and one end of the rotating rod 88 passes through the U-shaped frame 13 and is rotatably connected to one side of the inner wall of the U-shaped frame 13. The cutting knife 87 is welded on the surface of the rotating rod 88.

[0031] When in use, start the second hydraulic rod 85 to extend its movable end, so that the cutting knife 87 is located on one side end of the tile through the U-shaped frame 13, and then start the fourth motor 86 to drive the cutting knife 87 to rotate through the rotating rod 88, and then start the third motor 81 to make the second screw 82 rotate, so that one end of the slide 84 moves on its surface, and the other end of the slide 84 moves on the surface of the round rod 83. The round rod 83 is used to provide stable support for the slide 84 during the moving operation. The movement of the slide 84 allows the second hydraulic rod 85 to drive the cutting knife 87 to move and cut the tile.

[0032] Working principle: First, place the tiles in sequence on the top of the bottom plate 1 below the pneumatic suction cup 46, then start the first hydraulic rod 45 to drive the pneumatic suction cup 46 to move down to the top of the tile and adsorb the tile, then contract the movable end of the first hydraulic rod 45 to make the pneumatic suction cup 46 drive the tile to move up, start the first motor 41 to make the moving block 47 drive the support plate 44 to move in translation through the first screw 42, thereby driving the tile to move up to the top of the conveying roller 51, then close the pneumatic suction cup 46 to release its adsorption force on the tile, then start the second motor 52 to control the conveying mechanism to convey and cut the tile, and when the conveying roller 51 conveys the tile, the rotating block is rotated. 65 causes the screw rod 61 to drive the limiting mechanism to operate, so that the limiting frame 62 drives the roller 64 to contact the side of the tile, limiting the conveying trajectory of the tile, and the continuous rotation of the conveying roller 51 causes the tile to be conveyed to the bottom of the cutting knife 87. At this time, the movable end of the electric push rod 71 is controlled to extend so that the fixed plate 72 fixes and clamps the side of the tile, and then the second hydraulic rod 85 is started to drive it to move down to one side end of the tile, and then the fourth motor 86 is started to drive the cutting knife 87 to rotate through the rotating rod 88, and at the same time, the third motor 81 is started so that the second screw rod 82 drives the cutting knife 87 to move and cut the tile through the slide plate 84.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cutting device for processing ceramic tiles, comprising a base plate (1), characterized in that: Two sets of mounting frames (2) are symmetrically welded to one side of the top of the bottom plate (1); the sides of the two sets of mounting frames (2) are provided with a loading mechanism for loading and cutting tiles; one side of the loading mechanism is provided with a conveying mechanism that cooperates with the loading mechanism to convey and cut tiles; the top of the conveying mechanism is provided with a limiting mechanism for limiting the conveying trajectory of the tiles during conveyance; The feeding mechanism comprises a first motor (41), a first screw (42), a slide bar (43), a support plate (44), a first hydraulic rod (45) and a pneumatic suction cup (46); the first motor (41) is mounted on the side of one of the mounting frames (2) by means of bolts; the side walls of the two groups of mounting frames (2) are provided with rectangular grooves (9) along the length direction; the first screw (42) and the slide bar (43) are respectively provided inside the rectangular grooves (9); one end of the first screw (42) is rotatably connected to one side of the inner wall of the rectangular groove (9) through a bearing seat; the other end of the first screw (42) passes through the mounting frame (2) and is fixed to the output end of the first motor (41) by a rotating shaft. Fixed connection, both ends of the slide rod (43) are welded to the inner wall of the rectangular groove (9), and the interior of the rectangular groove (9) is slidably connected with a moving block (47), one group of the moving blocks (47) is connected to the first screw rod (42) by threaded rotation, and the other group of the moving blocks (47) is slidably connected to the slide rod (43), one end side of the moving block (47) is welded to the side of the support plate (44), and a plurality of first hydraulic rods (45) are fixedly connected to the side of the support plate (44) close to the bottom plate (1), and the top of the movable end of the first hydraulic rod (45) is installed with a pneumatic suction cup (46), and a conveying mechanism is provided on one side of the pneumatic suction cup (46); The conveying mechanism comprises a conveying roller (51) and a second motor (52); a device slot (10) located at the top of the bottom plate (1) is opened on one side of the pneumatic suction cup (46); a plurality of groups of equally spaced conveying rollers (51) are rotatably connected to the inner wall of the device slot (10); and adjacent conveying rollers (51) are connected by chain transmission; a second motor (52) is installed on one side of the bottom plate (1) by bolts; an output end of the second motor (52) passes through the bottom plate (1) and is fixedly connected to the end of any conveying roller (51) by a rotating shaft; and a limiting mechanism is provided on the top of the conveying roller (51); A processing cover (3) located at the top of the base plate (1) is welded to one side of the limiting mechanism, and a top end of one side of the processing cover (3) is welded to a side end of the mounting frame (2). A fixing mechanism for fixing tiles when cutting is provided on the side surface of the inner wall of the processing cover (3), and a cutting mechanism located at the top of the inner wall of the processing cover (3) is provided above the fixing mechanism.

2. A cutting device for tile processing according to claim 1, characterized in that: The limiting mechanism comprises a screw rod (61), a limiting frame (62), a support rod (63) and a roller (64); the top of the conveying roller (51) is symmetrically welded with a mounting plate (11) located on the top of the bottom plate (1); the middle of the interior of the mounting plate (11) is rotatably connected to the screw rod (61) through a thread; one end of the screw rod (61) extends to the outside of the mounting plate (11) and is welded with a rotating block (65); the other end of the screw rod (61) extends to the inside of the mounting plate (11) and is rotatably connected to the side of the limiting frame (62) through a bearing seat; one side of the limiting frame (62) is symmetrically welded with support rods (63) located on both sides of the screw rod (61); the other end of the support rod (63) passes through the mounting plate (11) and is welded with a limiting block (66), and the support rods (63) are slidably connected to the mounting plate (11); the interior of the limiting frame (62) is rotatably connected to multiple groups of evenly distributed rollers (64) through bearings.

3. The cutting device for tile processing according to claim 1, characterized in that: The fixing mechanism comprises an electric push rod (71) and a fixing plate (72), the electric push rods (71) are symmetrically mounted on the inner wall side surfaces of the processing cover (3), the top surfaces of the movable ends of the electric push rods (71) are mounted with fixing plates (72) via screws, and a cutting mechanism located on the top of the inner wall of the processing cover (3) is provided above the fixing plate (72).

4. A cutting device for tile processing according to claim 3, characterized in that: The cutting mechanism comprises a third motor (81), a second screw (82), a round rod (83), a slide plate (84), a second hydraulic rod (85) and a cutting assembly. A rectangular block (12) is welded above the fixed plate (72) and is located at the top of the inner wall of the processing cover (3). The third motor (81) is installed on the side of one of the blocks (12). The output end of the third motor (81) is fixedly connected to the second screw (82) through a rotating shaft. The other end of the second screw (82) passes through the block (12) and is connected to the second screw (82) through the shaft. The support is rotatably connected to the side of another stopper (12), and both ends of the round rod (83) are welded to both sides of the stopper (12) away from the second screw rod (82). Both ends of a slide plate (84) are installed on the surface of the round rod (83) and the second screw rod (82). The slide plate (84) is slidably connected to the round rod (83) and is rotatably connected to the second screw rod (82) through a thread. A second hydraulic rod (85) is fixedly installed in the middle of the bottom of the slide plate (84), and the movable end of the second hydraulic rod (85) is connected to the cutting assembly.

5. A cutting device for tile processing according to claim 4, characterized in that: The cutting assembly comprises a fourth motor (86) and a cutting knife (87); the top of the movable end of the second hydraulic rod (85) is mounted with a U-shaped frame (13) by means of screws; a fourth motor (86) is mounted on one side of the U-shaped frame (13); an output end of the fourth motor (86) is fixedly connected to a rotating rod (88) via a rotating shaft; one end of the rotating rod (88) passes through the U-shaped frame (13) and is rotatably connected to one side of the inner wall of the U-shaped frame (13); and a cutting knife (87) is welded on the surface of the rotating rod (88).

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