Corner grinding device for aluminum veneer machining

Abstract

The utility model relates to the technical field of aluminum veneer machining, in particular to an aluminum veneer machining corner polishing device which is simple in structure, can extract and collect dust generated by polishing, improves cleanliness and improves polishing efficiency. Comprising a grinding table, a supporting box, a plurality of supporting legs, a grinding roller, a grinding motor, a dust collection assembly, a feeding assembly, an adsorption assembly and a guide assembly, the supporting box is fixedly connected to the bottom of the grinding table, the supporting legs are fixedly installed at the four corners of the bottom of the supporting box correspondingly, a grinding opening is formed in the middle of the grinding table, and the grinding roller is rotationally installed in the middle of the grinding opening; the input end of the grinding roller penetrates through the front end of the grinding table to be connected with the output end of the grinding motor, the grinding motor is installed in the middle of the front end of the grinding table, the dust collection assembly is installed below the grinding roller at the bottom of the grinding table, the feeding assembly is installed at the rear end of the top of the grinding table, the adsorption assembly is installed on the feeding assembly, and the guide assembly is installed at the front end of the top of the grinding table.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aluminium veneer processing, in particular to an aluminium veneer processing edge and corner polishing device. BACKGROUND

[0002] Aluminium veneer refers to building decoration material formed by fluorocarbon spraying technology after chromium treatment, and the prior art publication No. CN210125934U discloses a burr polishing device used after aluminium veneer cutting, which comprises a supporting frame and a burr polishing machine fixedly arranged above the supporting frame, a sliding mechanism is arranged at the rear end of the burr polishing machine, the front end of the sliding mechanism is fixedly connected with the rear end of the burr polishing machine, a motor mounting frame is tightly welded on the position opposite to the right side of the sliding mechanism at the rear part of the supporting frame, and a motor is fixedly installed on the top surface of the motor mounting frame. UTILITY MODEL CONTENTS

[0003] To solve the above technical problems, the utility model provides an aluminium veneer processing edge and corner polishing device which is simple in structure, can extract and collect the dust generated during polishing, improves the cleanliness and polishing efficiency.

[0004] The aluminium veneer processing edge and corner polishing device comprises a polishing table, a supporting box, a plurality of supporting legs, a polishing roller, a polishing motor, a dust suction assembly, a feeding assembly, an adsorption assembly and a guide assembly, the bottom of the polishing table is fixedly connected with the supporting box, the bottom of the supporting box is fixedly installed with the supporting legs at the four corners, a polishing opening is formed in the middle of the polishing table, the polishing roller is rotatably installed in the middle of the polishing opening, the input end of the polishing roller penetrates through the front end of the polishing table and is connected with the output end of the polishing motor, the polishing motor is installed in the middle of the front end of the polishing table, the dust suction assembly is installed below the polishing roller at the bottom of the polishing table, the feeding assembly is installed at the rear end of the top of the polishing table, the adsorption assembly is installed on the feeding assembly, and the guide assembly is installed at the front end of the top of the polishing table. The equipment is supported by the supporting box and the supporting legs, the aluminium veneer is adsorbed and fixed by the adsorption assembly, the aluminium veneer is fed at a constant speed by the feeding assembly, the polishing quality is ensured, the dust generated during polishing is extracted and collected by the dust suction assembly when the aluminium veneer is polished by the polishing roller, the polishing table can be cleaned in time and effectively, the aluminium veneer is guided by the guide assembly, the stability during polishing is ensured, and the polishing efficiency is improved.

[0005] Preferably, the dust collection assembly comprises a dust collection cover, a dust collection pipe and a dust collector, the dust collection cover is installed at the polishing opening at the bottom of the polishing table, the polishing roller is located inside the dust collection cover, the dust collection pipe is connected to the bottom of the dust collection cover, the output end of the dust collection pipe is connected to the dust collector, the dust collector is located inside the support box and is installed at the bottom of the polishing table, and the front end cleaning cover plate of the dust collector is located outside the support box; during polishing, the dust collector is started to draw the inside of the dust collection cover through the dust collection pipe to generate negative pressure inside the dust collection cover, thereby collecting the dust generated during polishing, so that the polishing table can be cleaned in a timely and effective manner, and the cleanliness of the polishing table is improved.

[0006] Preferably, the feeding assembly comprises a threaded rod, a reversible motor, a moving block, a fixed plate, a fixed column, a second electric telescopic rod, a pushing plate, two guide rods and a lifting column, a feeding chute is formed at the top rear end of the polishing table, the threaded rod is rotatably installed in the feeding chute, the right end of the threaded rod is connected to the output end of the reversible motor through the feeding chute, the moving block is slidably installed in the feeding chute, the moving block is screwed on the outer wall of the threaded rod, the fixed plate is fixedly connected to the top of the moving block, the fixed column is installed on the top of the fixed plate, a lifting sliding cavity is formed at the front end of the fixed column, the second electric telescopic rod is installed at the bottom of the lifting sliding cavity, the top telescopic end of the second electric telescopic rod is connected to the pushing plate, the pushing plate is slidably installed in the lifting sliding cavity, the guide rods are symmetrically installed in the lifting sliding cavity about the second electric telescopic rod, the pushing plate is slidably installed on the guide rods, the lifting column is fixedly installed on the top of the pushing plate, and the lifting column is slidably installed in the lifting sliding cavity; the threaded rod is rotated by starting the reversible motor, the moving block is moved in the feeding chute, the aluminum veneer is moved at a constant speed, the polishing quality is ensured, the pushing plate is moved by the second electric telescopic rod, the lifting column is moved upward, the aluminum veneer is pushed upward, the height of the aluminum veneer is adjusted, the aluminum veneer is conveniently turned over, the other side is polished, and the working efficiency is improved.

[0007] Preferably, the feeding assembly comprises a threaded rod, a reversible motor, a moving block, a fixed plate, a fixed column, a second electric telescopic rod, a pushing plate, two guide rods and a lifting column, a feeding chute is formed at the top rear end of the polishing table, the threaded rod is rotatably installed in the feeding chute, the right end of the threaded rod is connected to the output end of the reversible motor through the feeding chute, the moving block is slidably installed in the feeding chute, the moving block is screwed on the outer wall of the threaded rod, the fixed plate is fixedly connected to the top of the moving block, the fixed column is installed on the top of the fixed plate, a lifting sliding cavity is formed at the front end of the fixed column, the second electric telescopic rod is installed at the bottom of the lifting sliding cavity, the top telescopic end of the second electric telescopic rod is connected to the pushing plate, the pushing plate is slidably installed in the lifting sliding cavity, the guide rods are symmetrically installed in the lifting sliding cavity about the second electric telescopic rod, the pushing plate is slidably installed on the guide rods, the lifting column is fixedly installed on the top of the pushing plate, and the lifting column is slidably installed in the lifting sliding cavity; the threaded rod is rotated by starting the reversible motor, the moving block is moved in the feeding chute, the aluminum veneer is moved at a constant speed, the polishing quality is ensured, the pushing plate is moved by the second electric telescopic rod, the lifting column is moved upward, the aluminum veneer is pushed upward, the height of the aluminum veneer is adjusted, the aluminum veneer is conveniently turned over, the other side is polished, and the working efficiency is improved.

[0008] Preferably, the adsorption assembly comprises a fixed seat, a rotating disc, a limiting rotating ring, a speed reducer motor, a support rod and a plurality of suction cups, the fixed seat is fixedly installed at the top end of the lifting column, an annular limiting rotating groove is formed in the front end of the fixed seat, the limiting rotating ring is rotatably installed in the limiting rotating groove, the rotating disc is connected to the front end of the limiting rotating ring, the speed reducer motor is fixedly installed on the rear side wall of the fixed seat, the output end of the speed reducer motor rotatably penetrates through the middle part of the fixed seat and is concentrically connected with the rotating disc, the support rod is fixedly installed at the front end of the rotating disc, and the plurality of suction cups are uniformly installed at the front end of the support rod; the aluminum veneer is adsorbed and fixed on the plurality of suction cups, so as to drive the aluminum veneer to move, after the grinding of one side is completed, the lifting column moves upward, meanwhile, the speed reducer motor drives the rotating disc to rotate, so that the support rod rotates and drives the aluminum veneer to rotate, and the other side is ground, which is favorable for improving the working efficiency, the rotating disc drives the limiting rotating ring to rotate in the limiting rotating groove, stability is ensured, and the structural strength is improved.

[0009] Preferably, the guiding assembly comprises a support column, a third electric telescopic rod, a guiding frame and a convex slide rod, the support column is fixedly installed at the top front end of the grinding table, the third electric telescopic rod is fixedly installed at the upper portion of the support column, the guiding frame is fixedly installed at the extending end of the third electric telescopic rod, a guiding rotating wheel is arranged on the guiding frame, the convex slide rod is fixedly installed on the side wall of the guiding frame, a convex limiting sliding groove matched with the guiding frame is formed in the top of the support column, and the convex slide rod is slidably installed in the convex limiting sliding groove; after the suction cup drives the aluminum veneer to move to the grinding position, the third electric telescopic rod drives the guiding frame to move, so that the guiding rotating wheel is in contact with the front end of the aluminum veneer, the stability during grinding is ensured, the grinding quality is improved, the guiding frame is slid on the upper end of the support column during movement of the guiding frame, the stability is ensured, and the structural strength is enhanced.

[0010] Preferably, the grinding table further comprises a support frame and a support sliding block, a guide strip is arranged at the upper end of the rear side wall of the grinding table, a support sliding groove is formed in the bottom of the guide strip, the support frame is fixedly installed on the rear side wall of the fixed plate, the support sliding block is installed at the bottom of the support frame, the support sliding block is slidably installed in the support sliding groove, and the support frame is slidably installed on the guide strip; the fixed plate drives the support frame and the support sliding block to slide on the guide strip during movement, so as to support the fixed plate, ensure the stability of the fixed plate and the fixed column, enhance the structural strength, and ensure the stability during feeding.

[0011] Compared with the prior art, the device has the advantages that: the equipment is supported by the support box and the supporting legs, the aluminum veneer is adsorbed and fixed by the adsorption assembly, the aluminum veneer is fed at a constant speed by the feeding assembly, the grinding quality is ensured, dust generated during grinding of the aluminum veneer by the grinding roller is extracted and collected by the dust collection assembly, the grinding table can be cleaned in time and effectively, the aluminum veneer is guided by the guiding assembly, the stability during grinding is ensured, and the grinding efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1It is the structure schematic view of the utility model;

[0013] Figure 2 It is the isometric structure schematic view of the utility model;

[0014] Figure 3 It is the partial section structure schematic view of the utility model;

[0015] Figure 4 It is the left partial section structure schematic view of the utility model;

[0016] Figure 5 It is the internal structure schematic view of the support box of the utility model;

[0017] Marked in the drawing: 1, polishing table;2, support box;3, support leg;4, polishing roller;5, polishing motor;6, dust collecting cover;7, dust suction pipe;8, dust collector;9, electric telescopic rod;10, bearing plate;11, threaded rod;12, positive and negative motor;13, moving block;14, fixed plate;15, fixed column;16, second electric telescopic rod;17, push plate;18, guide rod;19, lifting column;20, fixed seat;21, rotary table;22, limit swivel;23, speed reducer;24, support rod;25, suction disc;26, support frame;27, support sliding block;28, support stand;29, third electric telescopic rod;30, guide frame;31, convex slide bar. DETAILED DESCRIPTION

[0018] In order to facilitate understanding the utility model, below will be more comprehensive to the utility model with reference to relevant drawings are described.The utility model can be realized in many different forms, and is not limited to the embodiments described herein.Contrarily, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example 1

[0020] As Figure 1 , Figure 3 , Figure 4 And Figure 5As shown, the polishing table 1 bottom fixedly connected with support box 2, support box 2 bottom four corners are fixedly installed with supporting leg 3, polishing table 1 middle part is provided with polishing mouth, polishing mouth middle part is rotatably installed with polishing roller 4, polishing roller 4 input end passes through polishing table 1 front end and is connected with polishing motor 5 output end, polishing motor 5 is installed in polishing table 1 front end middle part, dust hood 6 is installed in polishing table 1 bottom polishing mouth, polishing roller 4 is located in dust hood 6 inside, dust hood 6 bottom is connected with dust extraction pipe 7, dust extraction pipe 7 output end is connected with dust collector 8, dust collector 8 is located in support box 2 inside, is installed in polishing table 1 bottom, and dust collector 8 front end cleaning cover plate is located in support box 2 outside, polishing table 1 top rear end is provided with feeding slide slot, threaded rod 11 is rotatably installed in feeding slide slot, threaded rod 11 right end passes through feeding slide slot and is connected with positive and negative motor 12 output end, moving block 13 is slidably installed in feeding slide slot, and moving block 13 is screwed on the outer wall of threaded rod 11, moving block 13 top is fixedly connected with fixed plate 14, fixed plate 14 top is installed with fixed column 15, fixed column 15 front end is provided with lifting slide cavity, second electric telescopic rod 16 is installed in lifting slide cavity bottom, second electric telescopic rod 16 top telescopic end is connected with push plate 17, push plate 17 is slidably installed in lifting slide cavity, lifting slide cavity inside is installed with guide rod 18 about second electric telescopic rod 16 left and right, push plate 17 left and right sides are slidably installed on guide rod 18, push plate 17 top is fixedly installed with lifting column 19, lifting column 19 is slidably installed in lifting slide cavity, fixed seat 20 is fixedly installed in the top end of lifting column 19, fixed seat 20 front end is provided with annular limit rotation slot, limit rotation ring 22 is rotatably installed in limit rotation slot, limit rotation ring 22 front end is connected with turntable 21, speed reducer 23 is fixedly installed on the rear side wall of fixed seat 20, speed reducer 23 output end is rotatably penetrated through fixed seat 20 middle part and is connected with turntable 21 concentrically, turntable 21 front end is fixedly installed with support rod 24, support rod 24 front end is uniformly provided with a plurality of suction cups 25;

[0021] The device is supported by the support box 2 and the support leg 3. When polishing, the dust collector 8 is started to extract the dust cover 6 through the dust extraction pipe 7, so that a negative pressure is generated in the dust cover 6, dust generated during polishing is extracted and collected, the polishing table 1 can be cleaned in time and effectively, the cleanliness of the polishing table 1 is improved, the positive and negative motor 12 is started to drive the threaded rod 11 to rotate, the moving block 13 is driven to move in the feeding chute, the aluminum veneer is driven to move at a constant speed, the polishing quality is ensured, the second electric telescopic rod 16 pushes the push plate 17 to move, the lifting column 19 is driven to move upwards, the aluminum veneer is pushed upwards, so that the height of the aluminum veneer is adjusted, the aluminum veneer is conveniently turned over, other edges are polished, and the working efficiency is improved. When the push plate 17 moves, the push plate 17 slides on the guide rod 18, the stability during movement is ensured, the aluminum veneer is adsorbed and fixed on the plurality of suction cups 25, so that the aluminum veneer is driven to move, after one side polishing is completed, the lifting column 19 moves upwards, the reduction motor 23 drives the rotating disc 21 to rotate, so that the supporting rod 24 rotates, the aluminum veneer is driven to rotate, other edges are polished, and the working efficiency is improved. The rotating disc 21 drives the limiting rotating ring 22 to rotate in the limiting rotating groove, the stability is ensured, and the structural strength is improved.

[0022] Embodiment 2

[0023] As shown in Figure 2 , Figure 4 and Figure 5 , on the basis of embodiment 1, the polishing table 1 is further provided with a receiving groove formed in the top and left and right sides of the polishing table 1, two electric telescopic rods 9 are fixedly installed at the bottom of the receiving groove, a bearing plate 10 is fixedly connected to the top of the electric telescopic rod 9, the upper surface of the bearing plate 10 is a smooth surface, a support column 28 is fixedly installed at the top of the front end of the polishing table 1, a third electric telescopic rod 29 is fixedly installed at the upper part of the support column 28, a guide frame 30 is fixedly installed at the telescopic end of the third electric telescopic rod 29, a guide rotating wheel is arranged on the guide frame 30, a convex slide rod 31 is fixedly installed on the side wall of the guide frame 30, a convex limiting sliding groove matched with the guide frame 30 is formed in the top of the support column 28, the convex slide rod 31 is slidably installed in the convex limiting sliding groove, a guide strip is arranged on the upper end of the rear side wall of the polishing table 1, a supporting sliding groove is formed in the bottom of the guide strip, a support frame 26 is fixedly installed on the rear side wall of the fixed plate 14, a supporting sliding block 27 is installed at the bottom of the support frame 26, the supporting sliding block 27 is slidably installed in the supporting sliding groove, and the support frame 26 is slidably installed on the guide strip;

[0024] The side of the aluminum veneer needing polishing slides on the top of the bearing plate 10, the bearing plate 10 is pushed out in the storage groove through the electric telescopic rod 9, the polishing depth of the polishing roller 4 to the aluminum veneer can be adjusted, use is convenient, after the suction cups 25 drive the aluminum veneer to move to the polishing position, the third electric telescopic rod 29 pushes the guide frame 30 to move, the guide wheel is contacted with the front end of the aluminum veneer, stability during polishing is guaranteed, polishing quality is improved, the guide frame 30 drives the guide frame 30 to slide on the upper end of the support column 28 during movement, stability is guaranteed, structural strength is enhanced, the support frame 26 and the support sliding block 27 slide on the guide strip during movement of the fixing plate 14, the fixing plate 14 is supported, stability of the fixing plate 14 and the fixing column 15 is guaranteed, structural strength is enhanced, and stability during feeding is guaranteed.

[0025] As shown in Figures 1 to 5 The aluminum veneer is adsorbed and fixed on the plurality of suction cups 25 during work, the screw rod 11 is driven to rotate by starting the reversible motor 12, the moving block 13 is driven to move in the feeding sliding groove, the aluminum veneer is driven to move at a constant speed, the side of the aluminum veneer needing polishing slides on the top of the bearing plate 10, the bearing plate 10 is pushed out in the storage groove through the electric telescopic rod 9, the polishing depth of the polishing roller 4 to the aluminum veneer can be adjusted, after the aluminum veneer moves to the polishing position, the third electric telescopic rod 29 pushes the guide frame 30 to move, the guide wheel is contacted with the front end of the aluminum veneer, stability during polishing is guaranteed, the polishing roller 4 is driven to rotate by starting the polishing motor 5, the aluminum veneer is polished, during polishing, the dust collector 8 is started to extract in the dust collecting cover 6 through the dust extraction pipe 7, negative pressure is generated in the dust collecting cover 6, dust generated during polishing is extracted and collected, the polishing table 1 can be cleaned in time and effectively, after one side polishing is completed, the second electric telescopic rod 16 pushes the push plate 17 to move, the lifting column 19 is pushed to move upwards, the aluminum veneer is pushed upwards, so that the height of the aluminum veneer is adjusted, the support rod 24 is rotated by the reduction motor 23 driving the rotating disc 21, the aluminum veneer is rotated, and other sides can be polished.

[0026] The polishing motor 5, the dust collector 8, the reversible motor 12 and the reduction motor 23 of the aluminum veneer processing edge polishing device are purchased on the market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, without the technical personnel in the field paying creative labor.

[0027] The preferred embodiments of the utility model are described above, and it should be pointed out that, for ordinary technical personnel in the technical field, a plurality of improvements and modifications can be made without departing from the technical principles of the utility model, and these improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. An aluminum veneer machining corner polishing device, characterized by, The polishing table (1) is fixedly connected with the support box (2) at the bottom, the support box (2) is fixedly installed with the supporting legs (3) at the bottom of four corners, the polishing table (1) is provided with a polishing opening in the middle, the polishing roller (4) is rotatably installed in the polishing opening, the input end of the polishing roller (4) penetrates through the front end of the polishing table (1) and is connected with the output end of the polishing motor (5), the polishing motor (5) is installed in the middle of the front end of the polishing table (1), the dust suction assembly is installed below the polishing roller (4) at the bottom of the polishing table (1), the feeding assembly is installed at the top rear end of the polishing table (1), the dust suction assembly is installed on the feeding assembly, and the guiding assembly is installed at the top front end of the polishing table (1).

2. The device for processing the edge and corner of an aluminum veneer according to claim 1, wherein The dust suction assembly comprises a dust collecting cover (6), a dust suction pipe (7) and a dust collector (8), the dust collecting cover (6) is installed at the polishing opening of the bottom of the polishing table (1), the polishing roller (4) is located in the dust collecting cover (6), the dust collecting cover (6) is connected with the dust suction pipe (7) at the bottom, the output end of the dust suction pipe (7) is connected with the dust collector (8), the dust collector (8) is located in the support box (2) and is installed at the bottom of the polishing table (1), and the front end cleaning cover plate of the dust collector (8) is located outside the support box (2).

3. The device for processing the edge and corner of an aluminum veneer according to claim 1, wherein The feeding assembly comprises a threaded rod (11), a reversible motor (12), a moving block (13), a fixed plate (14), a fixed column (15), a second electric telescopic rod (16), a pushing plate (17), two guide rods (18) and a lifting column (19), the polishing table (1) is provided with a feeding chute at the top rear end, the threaded rod (11) is rotatably installed in the feeding chute, the right end of the threaded rod (11) penetrates through the feeding chute and is connected with the output end of the reversible motor (12), the moving block (13) is slidably installed in the feeding chute, the moving block (13) is screwed on the outer wall of the threaded rod (11), the fixed plate (14) is fixedly connected to the top of the moving block (13), the fixed column (15) is installed on the top of the fixed plate (14), the lifting slide cavity is formed in the front end of the fixed column (15), the second electric telescopic rod (16) is installed at the bottom of the lifting slide cavity, the top telescopic end of the second electric telescopic rod (16) is connected with the pushing plate (17), the pushing plate (17) is slidably installed in the lifting slide cavity, the guide rods (18) are symmetrically installed in the lifting slide cavity about the second electric telescopic rod (16), the pushing plate (17) is slidably installed on the guide rods (18) on the left and right sides, and the lifting column (19) is fixedly installed on the top of the pushing plate (17) and slidably installed in the lifting slide cavity.

4. The device for processing the edge and corner of an aluminum veneer according to claim 1, wherein Two groups of electric telescopic rods (9) and two bearing plates (10) are further included, the polishing table (1) is provided with receiving grooves at the left and right sides of the top, the two electric telescopic rods (9) are fixedly installed at the bottom of the receiving grooves, the top of the electric telescopic rod (9) is fixedly connected with the bearing plate (10), and the upper surface of the bearing plate (10) is a smooth surface.

5. The device for processing the edge and corner of an aluminum veneer according to claim 3, wherein The adsorption assembly comprises a fixing base (20), a rotating disc (21), a limiting rotating ring (22), a speed reducer motor (23), a supporting rod (24) and a plurality of suction cups (25), the fixing base (20) is fixedly installed at the top end of the lifting column (19), an annular limiting rotating groove is formed in the front end of the fixing base (20), the limiting rotating ring (22) is rotatably installed in the limiting rotating groove, the rotating disc (21) is connected to the front end of the limiting rotating ring (22), the speed reducer motor (23) is fixedly installed on the rear side wall of the fixing base (20), the output end of the speed reducer motor (23) is rotatably penetrated through the middle part of the fixing base (20) and is concentrically connected with the rotating disc (21), the supporting rod (24) is fixedly installed at the front end of the rotating disc (21), and the plurality of suction cups (25) are uniformly installed at the front end of the supporting rod (24).

6. The device for processing the edge and corner of an aluminum veneer according to claim 1, wherein The guide assembly comprises a supporting column (28), a third electric telescopic rod (29), a guide frame (30) and a convex sliding rod (31), the supporting column (28) is fixedly installed at the top front end of the polishing table (1), the third electric telescopic rod (29) is fixedly installed at the upper portion of the supporting column (28), the guide frame (30) is fixedly installed at the telescopic end of the third electric telescopic rod (29), the guide frame (30) is provided with a guide rotating wheel, the convex sliding rod (31) is fixedly installed on the side wall of the guide frame (30), and the top of the supporting column (28) is provided with a convex limiting sliding groove matched with the guide frame (30), and the convex sliding rod (31) is slidably installed in the convex limiting sliding groove.

7. The device according to claim 3, wherein the device is characterized by: The polishing table (1) is further provided with a supporting frame (26) and a supporting sliding block (27), a guide strip is arranged on the rear side wall of the polishing table (1), a supporting sliding groove is formed in the bottom of the guide strip, the supporting frame (26) is fixedly installed on the rear side wall of the fixing plate (14), the supporting sliding block (27) is installed at the bottom of the supporting frame (26), the supporting sliding block (27) is slidably installed in the supporting sliding groove, and the supporting frame (26) is slidably installed on the guide strip.

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