Feeding device for door and window machining center

Abstract

The utility model relates to the technical field of aluminum alloy door and window processing, and discloses a feeding device for a door and window processing center, which comprises a machine body, a conveyor belt is arranged in the machine body, the top of the machine body is fixedly connected with a processing case, and the outer surface of the processing case is fixedly connected with an air cylinder fixing seat. A first driving air cylinder is fixedly connected to the inner wall of the air cylinder fixing base, a pressing fixing plate is fixedly connected to the output end of the first driving air cylinder, and a driving machine box is fixedly connected to the upper surface of the processing machine box. The device has the following advantages and effects that by arranging the conveying belt, the processing machine box, the first driving air cylinder, the pressing fixing plate, the driving machine box, the stepping motor, the threaded rod, the threaded sleeve, the supporting rod, the movable base, the second driving air cylinder, the driving motor and the burr removing brush, the effect that the device can conveniently clean materials is achieved; and the trouble of manually removing burrs is saved, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminium alloy door and window processing technical field, especially relate to a feeding device for door and window machining center. BACKGROUND

[0002] Aluminium alloy door and window refers to the door and window made of aluminium alloy extruded section material, and is called aluminium alloy door and window, and is called aluminium door and window. In the process of aluminium alloy door and window processing, in order to improve the efficiency of work, the feeding device is usually used to feed aluminium profile, so as to improve the processing efficiency.

[0003] Chinese patent publication number (CN216224959U) discloses a kind of for door and window material processing automatic feeding device, including rack, conveying device, processing mechanism and feeding mechanism, feeding mechanism is by feeding tank, contact sensor, feed inlet, cylinder and feeding rack, feeding rack is by mould, transmission motor, rotating chain, signal receiver and transmission wheel composition.The automatic feeding device for door and window material processing is used when carrying out door and window processing, door and window material is placed in the top of feeding rack from feed inlet, cylinder is started, the output end of cylinder drives feeding rack to rise, door and window material is lifted, when the top of feeding rack contacts with contact sensor, contact sensor will send signal to signal receiver, signal receiver sends signal to transmission motor after receiving signal, transmission motor is started, drives transmission wheel to rotate, transmission wheel drives rotating chain meshed with it to rotate, door and window material in the top of mould is transported to the top of conveying device, and completes processing feeding.

[0004] But the above-mentioned utility model still has the following problems: in the actual processing process, door and window material, i.e. aluminium profile, before carrying out spraying process, often needs to clean burr and adhered dust on its surface, to ensure the flatness of spraying and spraying quality, and the above-mentioned utility model can complete the feeding of aluminium profile, but does not have the cleaning effect of aluminium profile surface, so it needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a feeding device for door and window machining center, which has the effect of conveniently cleaning materials.

[0006] The utility model discloses a above-mentioned technical purpose is through following technical scheme can be realized: a door and window processing center is with loading feeding device, including the body, the inside of body is provided with conveyer belt, the top fixed connection of body has the processing machine box, the outer fixed surface connection of processing machine box has the cylinder fixed seat, the inner wall fixed connection of cylinder fixed seat has the first drive cylinder, the output fixed connection of first drive cylinder has the compression fixed plate, the upper surface fixed connection of processing machine box has the drive machine box, the one side fixed connection of drive machine box has the step motor, the output fixed connection of step motor has the screw rod, the outer surface screw joint of screw rod has the screw bush, the bottom fixed connection of screw bush has the support rod, the bottom fixed connection of support rod has the mobile seat, the lower surface fixed connection of mobile seat has the second drive cylinder, the output fixed connection of second drive cylinder has the motor mounting seat, the bottom fixed connection of motor mounting seat has the drive motor, the output fixed connection of drive motor has the deburring brush.

[0007] Through adopting above-mentioned technical scheme, through setting conveyer belt, processing machine box, first drive cylinder, compression fixed plate, drive machine box, step motor, screw rod, screw bush, support rod, mobile seat, second drive cylinder, drive motor and deburring brush, after aluminium profile enters processing machine box after the convey of conveyer belt, conveyer belt stops and two first drive cylinders work simultaneously, drive two compression fixed plates to complete the clamping of aluminium profile fixed to each other, then second drive cylinder works and drives drive motor and deburring brush to move downwards, until deburring brush is at the surface of aluminium profile, finally step motor and drive motor work simultaneously, when step motor works, through screw rod, screw bush and support rod, drive mobile seat to carry out reciprocating motion transversely, namely drive motor and deburring brush at the bottom are moved simultaneously, at this moment, deburring brush is driven by drive motor and is driven by top mobile seat, namely can reciprocate transversely on the surface of aluminium profile, and then realizes the removal of burr and dust on the surface of aluminium profile, thereby reaches the effect that the device is convenient to clean material, saves the trouble of manual burr removal, and improves the work efficiency.

[0008] The utility model discloses further provide as: the number of first drive cylinder and compression fixed plate is two, the outer surface fixed connection of two compression fixed plates has antiskid pad.

[0009] Through adopting above-mentioned technical scheme, through setting antiskid pad, can effectively promote the fastening degree of two compression fixed plates when fixing aluminium profile.

[0010] The utility model discloses further provide as: the inner top wall fixed connection of drive machine box has the slide rail, the outer surface sliding connection of slide rail has the sliding block, the sliding block with screw bush fixed connection.

[0011] By adopting the technical scheme, the stability of the moving seat during transverse movement is improved, that is, the stability of the deburring brush during movement is improved.

[0012] The utility model discloses further provide: the lower surface fixed connection of mobile seat has support frame, support frame and second drive cylinder fixed connection.

[0013] By adopting the technical scheme, the stability of the moving seat during transverse movement is improved, that is, the stability of the deburring brush during movement is improved.

[0014] The utility model discloses further provide: the one side fixed connection of machine body has the clutch motor, the output of clutch motor fixed connection has the conveyer belt driving roller, the inner wall rotation of machine body is connected with conveyer belt driven roller, conveyer belt driving roller and conveyer belt driven roller all are connected with the rotation of conveyer belt.

[0015] By adopting the technical scheme, the stability of the moving seat during transverse movement is improved, that is, the stability of the deburring brush during movement is improved.

[0016] The utility model discloses further provide: the outer surface fixed connection of machine body has the connecting frame, the one end fixed connection of connecting frame has the fixed frame, the inner wall fixed connection of fixed frame has the adjustment machine case.

[0017] By adopting the technical scheme, the stability of the moving seat during transverse movement is improved, that is, the stability of the deburring brush during movement is improved.

[0018] The utility model discloses further provide: the upper surface fixed connection of adjustment machine case has synchronous motor, the output fixed connection of synchronous motor has drive gear, the bottom of drive gear is engaged with driven gear, the inner wall plug connection of driven gear has two -way screw rod, the outer surface screw connection of two -way screw rod has limit stop, the bottom fixed connection of limit stop has connecting rod, the bottom fixed connection of connecting rod has limit seat, the bottom fixed connection of limit seat has the connecting strip, the bottom fixed connection of connecting strip has the guide rail.

[0019] By adopting the technical scheme, the synchronous motor drives the bidirectional screw rod to rotate through the transmission of the driving gear and the driven gear when working, and then drives the two limiting blocks to move towards each other or move in opposite directions, that is, drives the two guide rails below to move close to each other or move away from each other, so that the distance between the two guide rails is adjusted, and in actual use, the two guide rails play a guiding role when the aluminum profile is fed, so that the aluminum profile is ensured to be in the center of the conveying belt during feeding, so as to ensure that the subsequent deburring brush can complete the deburring operation on the aluminum profile, and the two adjustable guide rails can be suitable for aluminum profile feeding of different widths, thereby enhancing the applicability and practicality of the device.

[0020] The utility model discloses further provide as follows: the outer surface of guide rail is provided with installation groove, the inner wall of installation groove is connected with the pivot of rotation, the outer surface of pivot is connected with the guide pulley of sleeve.

[0021] By adopting the above technical scheme, the friction between the aluminum profile and the guide rail during feeding can be reduced by setting the installation groove, the pivot and the guide pulley, and the aluminum profile can be prevented from being stuck in the guide rail during feeding.

[0022] The utility model discloses further provide as follows: the inner wall of adjusting machine case is fixedly connected with bearing seat, the number of bearing seat is two, two bearing seat all are connected with bidirectional screw rod of rotation, the outer wall of bidirectional screw rod is connected with the limit baffle of sleeve.

[0023] By adopting the above technical scheme, the bearing seat is set to support and fix the bidirectional screw rod, the limit baffle is set to limit the moving position of the limiting block, and the limiting block is prevented from sliding out of the thread of the bidirectional screw rod.

[0024] The utility model discloses further provide as follows: the lower surface of adjusting machine case is fixedly installed with slide rod, the outer surface of limit seat is provided with through -hole, and limit seat is slidably connected with slide rod through through -hole.

[0025] By adopting the above technical scheme, the stability of the limit seat when driving the guide rail to move can be effectively improved by setting the slide rod.

[0026] The utility model discloses an advantageous effect is: through setting up conveyer belt, processing machine case, first drive cylinder, compression fixed plate, drive machine case, stepping motor, screw rod, screw sleeve, support rod, mobile seat, second drive cylinder, drive motor and deburring brush, after aluminium profile enters processing machine case through the delivery of conveyer belt, conveyer belt stops and two first drive cylinders work simultaneously, drive two compression fixed plates to complete the clamping of aluminium profile fixedly to each other, then second drive cylinder works and drives drive motor and deburring brush to move downwards, until deburring brush is at the surface of aluminium profile, finally, stepping motor and drive motor work simultaneously, when stepping motor works, through screw rod, screw sleeve and support rod drive mobile seat to carry out reciprocating motion laterally, that is, drive motor and deburring brush at the bottom move simultaneously, deburring brush is driven by drive motor and is driven by the mobile seat at the top at this moment, can reciprocate laterally on the surface of aluminium profile, and then realize the removal of burr and dust on the surface of aluminium profile, thereby reach the effect that the device is convenient to clean material, save the trouble of manual burr removal, improve the work efficiency, through setting up adjustment machine case, synchronous motor, drive gear, driven gear, bidirectional screw rod, limit block, connecting rod, limit seat, connecting strip and guide rail, when synchronous motor works, drive gear and driven gear drive bidirectional screw rod to rotate, and then drive two limit blocks to move towards each other or opposite, that is, drive two guide rails below to move towards each other or away, realize the adjustment of the distance between two guide rails, in the actual use, two guide rails play the guiding role when the aluminium profile is fed, guarantee that aluminium profile is in the center of conveyer belt when feeding, to ensure that deburring brush can complete the burr removal operation of aluminium profile, and two adjustable guide rails can be applicable to the aluminium profile feeding of different widths, enhance the applicability and practicality of the device. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0028] Figure 1 It is the structural schematic diagram of the utility model;

[0029] Figure 2 It is the structural schematic diagram of deburring brush in the utility model;

[0030] Figure 3 It is the structural schematic diagram of screw rod in the utility model;

[0031] Figure 4 It is the structural schematic diagram of bidirectional screw rod in the utility model;

[0032] Figure 5 It is the structural schematic view of the guide rail in the utility model.

[0033] Figure 6 It is the structural schematic view of the driving roller of the conveyer belt in the utility model.

[0034] In the figure, 1, machine body; 2, conveyer belt; 3, processing machine box; 4, cylinder fixing seat; 5, first driving cylinder; 6, pressing fixing plate; 7, driving machine box; 8, stepping motor; 9, screw rod; 10, screw sleeve; 11, support rod; 12, moving seat; 13, second driving cylinder; 14, motor mounting seat; 15, driving motor; 16, deburring brush; 17, non-slip pad; 18, slide rail; 19, sliding block; 20, support frame; 21, holding brake motor; 22, conveyer belt driving roller; 23, conveyer belt driven roller; 24, connecting frame; 25, fixed frame; 26, adjusting machine box; 27, synchronous motor; 28, driving gear; 29, driven gear; 30, bidirectional screw rod; 31, limiting block; 32, connecting rod; 33, limiting seat; 34, connecting strip; 35, guide rail; 36, mounting groove; 37, rotating shaft; 38, guide pulley; 39, bearing seat; 40, limiting baffle; 41, sliding rod. DETAILED DESCRIPTION

[0035] The technical scheme of the utility model will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0036] REFERENCE Figures 1-6The utility model provides a kind of feeding device for door and window machining center, including body 1, the inside of body 1 is provided with conveyor belt 2, the top of body 1 is fixedly connected with processing machine box 3, the outer surface of processing machine box 3 is fixedly connected with cylinder fixed seat 4, the inner wall of cylinder fixed seat 4 is fixedly connected with first drive cylinder 5, the output of first drive cylinder 5 is fixedly connected with compression fixed plate 6, the upper surface of processing machine box 3 is fixedly connected with drive machine box 7, the side of drive machine box 7 is fixedly connected with step motor 8, the output of step motor 8 is fixedly connected with screw rod 9, the outer surface of screw rod 9 is threadedly connected with screw sleeve 10, the bottom of screw sleeve 10 is fixedly connected with support rod 11, the bottom of support rod 11 is fixedly connected with moving seat 12, the lower surface of moving seat 12 is fixedly connected with second drive cylinder 13, the output of second drive cylinder 13 is fixedly connected with motor mounting seat 14, the bottom of motor mounting seat 14 is fixedly connected with drive motor 15, the output of drive motor 15 is fixedly connected with deburring brush 16, by setting conveyor belt 2, processing machine box 3, first drive cylinder 5, compression fixed plate 6, drive machine box 7, step motor 8, screw rod 9, screw sleeve 10, support rod 11, moving seat 12, second drive cylinder 13, drive motor 15 and deburring brush 16, after aluminium profile is transported by conveyor belt 2 and enters processing machine box 3, conveyor belt 2 stops and two first drive cylinders 5 work simultaneously, drives two compression fixed plates 6 to be close to each other and completes the clamping of aluminium profile, then second drive cylinder 13 works and drives drive motor 15 and deburring brush 16 to move downwards, until deburring brush 16 is at the surface of aluminium profile, finally step motor 8 and drive motor 15 work simultaneously, when step motor 8 works, moving seat 12 is driven to reciprocate laterally by screw rod 9, screw sleeve 10 and support rod 11, i.The stability of the connection between the second driving cylinder 13 and the moving seat 12 is ensured, one side of the machine body 1 is fixedly connected with a band brake motor 21, the output end of the band brake motor 21 is fixedly connected with a conveyor belt driving roller 22, the inner wall of the machine body 1 is rotatably connected with a conveyor belt driven roller 23, the conveyor belt driving roller 22 and the conveyor belt driven roller 23 are both rotatably connected with the conveyor belt 2, by arranging the band brake motor 21, the conveyor belt driving roller 22 and the conveyor belt driven roller 23, a driving mechanism of the conveyor belt 2 is formed, which provides driving force for the start and stop of the work of the conveyor belt 2, the outer surface of the machine body 1 is fixedly connected with a connecting frame 24, one end of the connecting frame 24 is fixedly connected with a fixed frame 25, the inner wall of the fixed frame 25 is fixedly connected with an adjusting machine box 26, by arranging the connecting frame 24 and the fixed frame 25, the fixing and supporting effect of the adjusting machine box 26 is achieved, the adjusting machine box 26 and the machine body 1 are connected, the upper surface of the adjusting machine box 26 is fixedly connected with a synchronous motor 27, the output end of the synchronous motor 27 is fixedly connected with a driving gear 28, the bottom of the driving gear 28 is meshed with a driven gear 29, the inner wall of the driven gear 29 is inserted with a bidirectional screw rod 30, the outer surface of the bidirectional screw rod 30 is threadedly connected with a limiting block 31, the bottom of the limiting block 31 is fixedly connected with a connecting rod 32, the bottom of the connecting rod 32 is fixedly connected with a limiting seat 33, the bottom of the limiting seat 33 is fixedly connected with a connecting strip 34, the bottom of the connecting strip 34 is fixedly connected with a guide rail 35, by arranging the adjusting machine box 26, the synchronous motor 27, the driving gear 28, the driven gear 29, the bidirectional screw rod 30, the limiting block 31, the connecting rod 32, the limiting seat 33, the connecting strip 34 and the guide rail 35, when the synchronous motor 27 works, the bidirectional screw rod 30 is driven to rotate through the transmission of the driving gear 28 and the driven gear 29, and then the two limiting blocks 31 are driven to move towards each other or move away from each other, that is, the two guide rails 35 below are driven to move close to each other or move away from each other, thereby adjusting the distance between the two guide rails 35, in actual use, the two guide rails 35 play a guiding role when the aluminum profile is fed, and the aluminum profile is ensured to be in the center of the conveyor belt 2 during feeding, so that the subsequent deburring brush 16 can complete the deburring operation of the aluminum profile, and the two adjustable guide rails 35 can be suitable for aluminum profiles of different widths, thereby enhancing the applicability and practicality of the device, the outer surface of the guide rail 35 is provided with a mounting groove 36, the inner wall of the mounting groove 36 is rotatably connected with a rotating shaft 37, the outer surface of the rotating shaft 37 is sleeved with a guide pulley 38, by arranging the mounting groove 36, the rotating shaft 37 and the guide pulley 38, the friction between the aluminum profile and the guide rail 35 during feeding can be reduced, and the aluminum profile is prevented from being stuck in the guide rail 35 during feeding, the inner wall of the adjusting machine box 26 is fixedly connected with a bearing seat 39, the number of the bearing seat 39 is two, the two bearing seats 39 are both rotatably connected with the bidirectional screw rod 30, the outer wall of the bidirectional screw rod 30 is sleeved with a limiting baffle 40, by arranging the bearing seat 39, the supporting and fixing effect of the bidirectional screw rod 30 is achieved, by arranging the limiting baffle 40,The adjusting machine box 26, the synchronous motor 27, the driving gear 28, the driven gear 29, the bidirectional screw rod 30, the limiting block 31, the connecting rod 32, the limiting seat 33, the connecting strip 34 and the guide rail 35 are arranged, the synchronous motor 27 is driven to rotate the bidirectional screw rod 30 through the transmission of the driving gear 28 and the driven gear 29, and then the two limiting blocks 31 are driven to move towards each other or move in the opposite direction, that is, the two guide rails 35 below are driven to move close to each other or move away from each other, so that the distance between the two guide rails 35 is adjusted.

[0037] In the utility model, through setting up conveying belt 2, processing machine box 3, first drive cylinder 5, compression fixed plate 6, drive machine box 7, step motor 8, screw rod 9, screw sleeve 10, support rod 11, moving seat 12, second drive cylinder 13, drive motor 15 and deburring brush 16, after aluminium profile is conveyed through conveying belt 2 and enters processing machine box 3, conveying belt 2 stops and two first drive cylinders 5 work simultaneously, drive two compression fixed plates 6 to complete the clamping and fixing of aluminium profile to each other, then second drive cylinder 13 works and drives drive motor 15 and deburring brush 16 to move downwards until deburring brush 16 is at the surface of aluminium profile, finally step motor 8 and drive motor 15 work simultaneously, when step motor 8 works, moving seat 12 is driven to move reciprocatingly transversely through screw rod 9, screw sleeve 10 and support rod 11, that is, drive motor 15 and deburring brush 16 at the bottom are driven to move simultaneously, at this moment, deburring brush 16 is driven by drive motor 15 and is driven by moving seat 12 at the top, that is, can move reciprocatingly transversely on the surface of aluminium profile, and then the removal of burrs and dust on the surface of aluminium profile is realized, so the effect that the device is convenient for cleaning material is achieved, the trouble of removing burrs manually is saved, and the work efficiency is improved.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A feeding device for loading a window and door machining center, comprising a machine body (1), characterized in that: The inside of the machine body (1) is provided with a conveyor belt (2), the top of the machine body (1) is fixedly connected with a processing machine box (3), the outer surface of the processing machine box (3) is fixedly connected with a cylinder fixing seat (4), the inner wall of the cylinder fixing seat (4) is fixedly connected with a first drive cylinder (5), the output end of the first drive cylinder (5) is fixedly connected with a pressing fixed plate (6), the upper surface of the processing machine box (3) is fixedly connected with a drive machine box (7), one side of the drive machine box (7) is fixedly connected with a stepping motor (8), the output end of the stepping motor (8) is fixedly connected with a screw rod (9), the outer surface of the screw rod (9) is threadedly connected with a screw sleeve (10), the bottom of the screw sleeve (10) is fixedly connected with a supporting rod (11), the bottom of the supporting rod (11) is fixedly connected with a moving seat (12), the lower surface of the moving seat (12) is fixedly connected with a second drive cylinder (13), the output end of the second drive cylinder (13) is fixedly connected with a motor mounting seat (14), the bottom of the motor mounting seat (14) is fixedly connected with a drive motor (15), the output end of the drive motor (15) is fixedly connected with a deburring brush (16).

2. The feeding device for loading a machining center for doors and windows according to claim 1, characterized in that: The number of the first drive cylinder (5) and the pressing fixed plate (6) is two, the outer surface of the two pressing fixed plates (6) is fixedly connected with an anti-skid pad (17).

3. The feeding device for loading a machining center for doors and windows according to claim 1, characterized in that: The inner top wall of the drive machine box (7) is fixedly connected with a sliding rail (18), the outer surface of the sliding rail (18) is slidingly connected with a sliding block (19), and the sliding block (19) is fixedly connected with the screw sleeve (10).

4. The feeding device for loading a machining center for doors and windows according to claim 1, characterized in that: The lower surface of the moving seat (12) is fixedly connected with a supporting frame (20), and the supporting frame (20) is fixedly connected with the second drive cylinder (13).

5. The feeding device for loading a machining center for doors and windows according to claim 1, characterized in that: One side of the machine body (1) is fixedly connected with an electromagnetic brake motor (21), the output end of the electromagnetic brake motor (21) is fixedly connected with a conveyor belt driving roller (22), the inner wall of the machine body (1) is rotatably connected with a conveyor belt driven roller (23), and the conveyor belt driving roller (22) and the conveyor belt driven roller (23) are rotatably connected with the conveyor belt (2).

6. The feeding device for loading a machining center for doors and windows according to claim 1, characterized in that: The outer surface of the machine body (1) is fixedly connected with a connecting frame (24), one end of the connecting frame (24) is fixedly connected with a fixed frame (25), and the inner wall of the fixed frame (25) is fixedly connected with an adjusting machine box (26).

7. The feeding device for loading a window and door machining center according to claim 6, characterized in that: The upper surface of the adjusting machine box (26) is fixedly connected with a synchronous motor (27), the output end of the synchronous motor (27) is fixedly connected with a drive gear (28), the bottom of the drive gear (28) is engaged with a driven gear (29), the inner wall of the driven gear (29) is inserted with a bidirectional screw rod (30), the outer surface of the bidirectional screw rod (30) is threadedly connected with a limit block (31), the bottom of the limit block (31) is fixedly connected with a connecting rod (32), the bottom of the connecting rod (32) is fixedly connected with a limit seat (33), the bottom of the limit seat (33) is fixedly connected with a connecting strip (34), and the bottom of the connecting strip (34) is fixedly connected with a guide rail (35).

8. The feeding device for loading a window and door machining center according to claim 7, characterized in that: The outer surface of the guide rail (35) is provided with a mounting groove (36), the inner wall of the mounting groove (36) is rotationally connected with a rotating shaft (37), and the outer surface of the rotating shaft (37) is sleeved with a guide pulley (38).

9. The feeding device for loading a machining center for doors and windows according to claim 6, characterized in that: The inner wall of the adjusting machine box (26) is fixedly connected with a bearing seat (39), the number of the bearing seat (39) is two, the two bearing seats (39) are rotationally connected with a bidirectional screw rod (30), and the outer wall of the bidirectional screw rod (30) is sleeved with a limiting baffle (40).

10. The feeding device for loading a window and door machining center according to claim 7, characterized in that: The lower surface of the adjusting machine box (26) is fixedly provided with a sliding rod (41), the outer surface of the limiting seat (33) is provided with a through hole, and the limiting seat (33) is slidably connected with the sliding rod (41) through the through hole.

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