CN215320589U

CN215320589U - Rubber paster device for rubber roll

Info

Publication number: CN215320589U
Application number: CN202121709365.3U
Authority: CN
Inventors: 焦建
Original assignee: SUZHOU BAOSU MINING AND METALLURGY EQUIPMENT CO Ltd
Current assignee: SUZHOU BAOSU MINING AND METALLURGY EQUIPMENT CO Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-12-28
Anticipated expiration: 2031-07-26

Abstract

The utility model belongs to the technical field of rubber roll processing, and particularly relates to a rubber paster device for a rubber roll, which comprises a workbench and a support frame, wherein the two sides of the top of the workbench are both connected with the support frame in a sliding manner, the outer wall of the support frame on the right side is fixedly connected with a control box, a motor is fixedly arranged in the inner cavity of the control box, the output end of the motor is fixedly connected with a rotating shaft, and the other end of the rotating shaft penetrates through the support frame and is fixedly connected with a fixed block; according to the utility model, through the matching of the bidirectional threaded screw rod, the screw sleeve, the limiting block and the T-shaped rod, the rubber plate clamps and fixes two ends of the rubber roller, so that workers can adjust the rubber plate to fix the rubber rollers with different sizes according to actual conditions, the rotating shaft is driven by the control motor to rotate for one circle, the fixing block drives the rubber roller to rotate for one circle, the workers can wind the rubber strips at two ends of the rubber roller conveniently, the situation that the workers manually rotate the rubber roller to wind the rubber strips is avoided, and the working strength is reduced.

Description

Rubber paster device for rubber roll

Technical Field

The utility model relates to the technical field of rubber roller processing, in particular to a rubber paster device for a rubber roller.

Background

The traditional rubber patch manufacturing process is complicated (a plurality of layers of rubber cakes need to be pasted and slurry glue needs to be brushed), the production efficiency is low, the yield is low, especially, the exhaust of the end face of a large-diameter rubber roller in the manufacturing process and the bonding strength with an iron core are difficult to guarantee, so that the end face is not firmly bonded after the end face of a finished product is vulcanized, the bubbling phenomenon among the plurality of layers of rubber cakes cannot be avoided, the manufacturing needs to be reworked again, the waste is very large, the influence of the diameter of the rubber roller and the formula of the rubber variety is large, and the larger the diameter of the rubber roller and the larger the manufacturing difficulty of the poor softness of the rubber formula are.

At present, in the improved rubber pasting process, a worker winds a rubber strip on the end face of a rubber roller in a circle, the method has no exhaust problem, the end face rubber is firmly bonded after the finished product is vulcanized and processed, the bubbling phenomenon cannot occur, the yield is high, the pasting process cannot be limited by the diameter of the rubber roller and the variety of the rubber formula, and the process applicability is strong, however, the existing rubber pasting process needs the worker to manually cut and wind the rubber in the processing process, and the time and the energy of the worker are greatly wasted; therefore, a rubber paster device for rubber rollers is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

In order to make up for the defects of the prior art and solve the problems that in the existing rubber pasting process, workers need to manually cut and wind rubber in the processing process, and the time and energy of the workers are greatly wasted, the utility model provides a rubber pasting device for a rubber roller.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the rubber paster device for the rubber roller comprises a workbench and a support frame, wherein the two sides of the top of the workbench are both connected with the support frame in a sliding mode, the outer wall of the support frame on the right side is fixedly connected with a control box, a motor is fixedly installed in the inner cavity of the control box, the output end of the motor is fixedly connected with a rotating shaft, the other end of the rotating shaft penetrates through the support frame and is fixedly connected with a fixed block, the support frame on the left side is rotatably connected with a connecting shaft through a bearing, the connecting shaft is fixedly connected with the other fixed block, fixing grooves are formed in the end faces of the two fixed blocks on the opposite sides, two rubber plates are symmetrically arranged in the fixing grooves from top to bottom, and the rubber plates are connected with an adjusting assembly through a connecting assembly; through the adjustment assembly, the cooperation between coupling assembling and the rubber sheet is convenient for the staff to press from both sides the clamp tightly fixedly to the both ends of rubber roll, when carrying out the paster, the staff fixes the one end at the rubber roll at the both ends of rubber roll earlier, drives the rotatory round of pivot through control motor for the fixed block drives the rotatory round of rubber roll, and the staff of being convenient for twines the rubber strip at the both ends of rubber roll, has avoided the manual rotatory rubber roll of staff to carry out the winding of rubber strip.

Preferably, the adjusting assembly comprises a bidirectional threaded screw rod and a screw sleeve, a first cavity is arranged in the fixed block, the inner wall of the first cavity is rotatably connected with the bidirectional threaded screw rod through a bearing, the top end of the bidirectional threaded screw rod penetrates through the fixed block, the screw sleeve is sleeved on the bidirectional threaded screw rod, and the screw sleeve is fixedly connected with the connecting assembly; through rotatory two-way screw lead screw for two silk cover relative slip on the two-way screw lead screw, and then make coupling assembling drive the rubber slab and press from both sides tightly fixedly to the both ends of rubber roll, the staff of being convenient for adjusts the rubber slab according to actual conditions and fixes the rubber roll of not unidimensional.

Preferably, the connecting assembly comprises a limiting block, a first spring and a T-shaped rod, second cavities are formed in the fixing blocks above and below the fixing groove, the first spring is fixedly connected to the inner wall of each second cavity, the other end of the first spring is fixedly connected with the T-shaped rod, the T-shaped rod penetrates through the second cavities and is fixedly connected with the rubber plate, the T-shaped rod in each second cavity is fixedly connected with the screw sleeve through the limiting block, and the first cavity is communicated with the second cavities through limiting openings; the fixing effect of the rubber plate is further enhanced through elastic potential energy of the spring I, and the phenomenon that the screw sleeve and the bidirectional threaded screw rod rotate to influence the fixing effect of the rubber roller is avoided.

Preferably, both sides of the top of the workbench are provided with a sliding chute and a plurality of screw holes, the support frame is connected with the sliding chute in a sliding manner, and the support frame is in threaded connection with the workbench through bolts; the supporting frame is convenient to fix after the rubber roll is placed on the sliding supporting frame through the bolts, and the supporting frame is prevented from sliding when the rubber roll rotates to affect the process of surface mounting.

Preferably, a cutting groove is formed in the bottom of the workbench, an air cylinder is fixedly mounted in the inner cavity of the workbench above the cutting groove, the bottom end of the air cylinder extends into the cutting groove and is fixedly connected with a mounting plate, and the mounting plate is fixedly connected with the cutter holder through a buffer assembly; drive mounting panel and blade holder lapse through the cylinder and cut the sheet rubber, avoided the staff manual cutting, reduced staff's working strength.

Preferably, the buffering component comprises a second spring and a T-shaped block, a plurality of buffering grooves are formed in the bottom of the mounting plate, the second spring is fixedly connected in each buffering groove, the T-shaped block is fixedly connected to the bottom end of the second spring, and the bottom end of the T-shaped block penetrates through the mounting plate and is fixedly connected with the tool apron; the elastic potential energy of the second spring is matched with the T-shaped block, so that the impact generated when the tool apron is in contact with the rubber sheet is reduced, the impact on the blade on the tool apron is effectively reduced, and the service life of the blade is prolonged.

Preferably, a plurality of blades are uniformly and fixedly connected to the end surface of the bottom of the cutter holder, a plurality of cutter grooves are formed in the bottom of the cutting groove, and the cutter grooves are matched with the blades; the bottom end of the cutter holder is provided with a blade which is matched with a cutter groove in the cutting groove, so that the blade can cut the rubber sheet conveniently.

Preferably, the end surfaces of the two sides of the cutting groove are respectively provided with a guide groove, a guide rod is fixedly connected in the guide groove, the bottom of the guide rod is sleeved with a buffer pad, the two sides of the mounting plate are respectively fixedly connected with a guide block, and the guide blocks are slidably connected with the guide rods; through the sliding fit between guide block and the guide bar, be convenient for play the guide effect to the slip of mounting panel, the blotter that overlaps through the guide bar bottom has reduced the impact when the guide block whereabouts effectively, and then has reduced the downward trend of mounting panel.

The utility model has the advantages that:

1. according to the rubber roller fixing device, the two ends of the rubber roller are clamped and fixed by the rubber plate through the cooperation of the two-way threaded screw rod, the screw sleeve, the limiting block and the T-shaped rod, so that workers can adjust the rubber plate to fix rubber rollers with different sizes according to actual conditions, the fixing effect of the rubber plate is further enhanced through elastic potential energy of the spring I, the phenomenon that the screw sleeve and the two-way threaded screw rod rotate to influence the fixing effect of the rubber roller is avoided, the rotating shaft is driven to rotate for a circle by the control motor, the fixing block drives the rubber roller to rotate for a circle, workers can wind rubber strips at the two ends of the rubber roller conveniently, the phenomenon that the workers wind the rubber strips by manually rotating the rubber roller is avoided, and the working strength is reduced;

2. according to the rubber sheet cutting device, the mounting plate and the tool apron are driven by the air cylinder to slide downwards to cut a rubber sheet, so that manual cutting of workers is avoided, the working strength of the workers is reduced, impact generated when the tool apron is in contact with the rubber sheet is reduced by matching elastic potential energy of the spring II with the T-shaped block, impact on a blade on the tool apron is effectively reduced, the service life of the blade is prolonged, the blade is convenient to cut the rubber sheet by matching the blade arranged at the bottom end of the tool apron with the tool groove in the cutting groove, the guide effect on sliding of the mounting plate is facilitated by sliding matching between the guide block and the guide rod, and impact when the guide block falls is effectively reduced by sleeving the cushion pad at the bottom of the guide rod.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of the overall internal structure of a first embodiment;

FIG. 2 is a schematic view of a portion A of FIG. 1;

FIG. 3 is a schematic view of a portion of the enlarged structure at B in FIG. 1;

FIG. 4 is a schematic view of a portion of the enlarged structure at C in FIG. 1;

FIG. 5 is a schematic perspective view of a fixing block according to an embodiment;

fig. 6 is a partial structural schematic diagram in the second embodiment.

In the figure: 1. a work table; 2. a support frame; 3. a motor; 4. a fixed block; 5. a control box; 6. a bidirectional threaded screw rod; 7. sleeving the silk; 8. a limiting block; 9. heat dissipation holes; 10. a first spring; 11. a T-shaped rod; 12. a rubber plate; 13. a cylinder; 14. mounting a plate; 15. a tool apron; 16. a second spring; 17. a T-shaped block; 18. a blade; 19. a cutter groove; 20. a guide bar; 21. a guide block; 22. a cushion pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-5, a rubber adhesive tape sticking device for a rubber roll comprises a workbench 1 and a support frame 2, wherein the support frame 2 is slidably connected to both sides of the top of the workbench 1, a control box 5 is fixedly connected to the outer wall of the support frame 2 on the right side, a motor 3 is fixedly installed in the inner cavity of the control box 5, the output end of the motor 3 is fixedly connected with a rotating shaft, the other end of the rotating shaft penetrates through the support frame 2 and is fixedly connected with a fixed block 4, a connecting shaft is rotatably connected to the support frame 2 on the left side through a bearing and is fixedly connected with another fixed block 4, fixing grooves are formed in the end faces of the two fixed blocks 4 on the opposite sides, two rubber plates 12 are symmetrically arranged in the fixing grooves from top to bottom, and the rubber plates 12 are connected with an adjusting assembly through a connecting assembly; during operation, when the installation rubber roll, the staff is convenient for put the rubber roll between two support frames 2 through two support frames 2 of reverse slip, through adjusting part, cooperation between coupling assembling and the rubber slab 12 is convenient for the staff to press from both sides the clamp to fix the both ends of rubber roll, when carrying out the paster, the staff fixes the both ends at the rubber roll with the one end of rubber strip earlier, drive the rotatory round of pivot through control motor 3, make fixed block 4 drive the rotatory round of rubber roll, the staff of being convenient for twines the rubber strip at the both ends of rubber roll, the staff manual rotatory rubber roll has been avoided and the winding that the rubber strip was carried out to the staff.

The adjusting assembly comprises a bidirectional threaded screw rod 6 and a screw sleeve 7, a first cavity is arranged in the fixed block 4, the inner wall of the first cavity is rotatably connected with the bidirectional threaded screw rod 6 through a bearing, the top end of the bidirectional threaded screw rod 6 penetrates through the fixed block 4, the screw sleeve 7 is sleeved on the bidirectional threaded screw rod 6, and the screw sleeve 7 is fixedly connected with the connecting assembly; during operation, when fixing the rubber roller, through rotatory two-way screw lead screw 6 for two silk cover 7 relative slip on the two-way screw lead screw 6, and then make coupling assembling drive rubber slab 12 press from both sides tight fixedly to the both ends of rubber roller, the staff of being convenient for adjusts rubber slab 12 according to actual conditions and fixes the rubber roller of not unidimensional.

The connecting assembly comprises a limiting block 8, a first spring 10 and a T-shaped rod 11, second cavities are formed in the fixed block 4 above and below the fixed groove, the first spring 10 is fixedly connected to the inner wall of each second cavity, the T-shaped rod 11 is fixedly connected to the other end of the first spring 10, the T-shaped rod 11 penetrates through the second cavities and is fixedly connected with a rubber plate 12, the T-shaped rod 11 in each second cavity is fixedly connected with a screw sleeve 7 through the limiting block 8, and the first cavities are communicated with the second cavities through limiting openings; during operation, when the screw sleeve 7 starts to slide, the limiting block 8 fixedly connected with the screw sleeve 7 drives the T-shaped rod 11 to slide relatively, so that the rubber roller in the fixed groove is fixedly clamped by the rubber plate 12 fixedly connected with the T-shaped rod 11, meanwhile, the first spring 10 is in a stretching state, the fixing effect of the rubber plate 12 is further enhanced through the elastic potential energy of the first spring 10, and the screw sleeve 7 and the two-way threaded screw rod 6 are prevented from rotating to influence the fixing effect of the rubber roller.

Both sides of the top of the workbench 1 are provided with a sliding chute and a plurality of screw holes, the support frame 2 is connected with the sliding chute in a sliding manner, and the support frame 2 is in threaded connection with the workbench 1 through bolts; during operation, the support frame 2 is convenient to fix after the rubber roll is placed on the sliding support frame 2 through the bolts, and the support frame 2 is prevented from sliding when the rubber roll rotates to affect the process of surface mounting.

A cutting groove is formed in the bottom of the workbench 1, an air cylinder 13 is fixedly installed in an inner cavity of the workbench 1 above the cutting groove, the bottom end of the air cylinder 13 extends into the cutting groove and is fixedly connected with an installation plate 14, and the installation plate 14 is fixedly connected with a tool apron 15 through a buffer assembly; during operation, when cutting the sheet rubber, put into the groove of cutting out with the sheet rubber, drive mounting panel 14 and blade holder 15 through cylinder 13 and slide downwards and cut the sheet rubber, avoided staff's manual cutting, reduced staff's working strength.

The buffering component comprises a second spring 16 and a T-shaped block 17, a plurality of buffering grooves are formed in the bottom of the mounting plate 14, the second spring 16 is fixedly connected in each buffering groove, the T-shaped block 17 is fixedly connected at the bottom end of the second spring 16, and the bottom end of the T-shaped block 17 penetrates through the mounting plate 14 and is fixedly connected with the tool apron 15; when the tool apron 15 slides downwards in work, the elastic potential energy of the second spring 16 is matched with the T-shaped block 17 to reduce the impact generated when the tool apron 15 is in contact with a rubber sheet, so that the impact on the blade 18 on the tool apron 15 is effectively reduced, and the service life of the blade 18 is prolonged.

A plurality of blades 18 are uniformly and fixedly connected to the bottom end surface of the cutter holder 15, a plurality of cutter grooves 19 are formed in the bottoms of the cutting grooves, and the cutter grooves 19 are matched with the blades 18; when the rubber sheet cutting machine works, the bottom end of the cutter holder 15 is provided with the blade 18 which is matched with the cutter groove 19 on the cutting groove, so that the blade 18 can conveniently cut the rubber sheet.

Guide grooves are formed in the end faces of the two sides of the cutting groove, a guide rod 20 is fixedly connected in each guide groove, a cushion pad 22 is sleeved at the bottom of each guide rod 20, guide blocks 21 are fixedly connected to the two sides of the mounting plate 14, and the guide blocks 21 are connected with the guide rods 20 in a sliding mode; during operation, through the sliding fit between guide block 21 and guide rod 20, be convenient for play the guide effect to the slip of mounting panel 14, the blotter 22 of cover in the bottom through guide rod 20 has reduced the impact when guide block 21 whereabouts effectively, and then has reduced the downward trend of mounting panel 14.

Example two

Referring to fig. 6, in a first comparative example, as another embodiment of the present invention, a plurality of heat dissipation holes 9 are uniformly formed in the control box 5; during operation, through 9 times of heat dissipation on the control box 5, a good working environment is provided for the operation of the motor 3, and the phenomenon that the motor 3 generates heat after long-time operation and is accumulated in the control box 5 to cause the normal operation of the motor 3 influenced by overhigh temperature in the control box 5 is avoided.

The working principle is that when the rubber roller is installed, a worker can conveniently place the rubber roller between the two supporting frames 2 by reversely sliding the two supporting frames 2, the worker can conveniently clamp and fix the two ends of the rubber roller by matching the adjusting component, the connecting component and the rubber plate 12, when the rubber roller is pasted, the worker firstly fixes one end of the rubber strip at the two ends of the rubber roller, the control motor 3 drives the rotating shaft to rotate for one circle, so that the fixing block 4 drives the rubber roller to rotate for one circle, the worker can conveniently wind the rubber strip at the two ends of the rubber roller, the worker can avoid manually rotating the rubber roller to wind the rubber strip, when the rubber roller is fixed, the two thread sleeves 7 on the two-way thread screw 6 can relatively slide by rotating the two-way thread screw 6, the connecting component drives the rubber plate 12 to clamp and fix the two ends of the rubber roller, and the worker can conveniently adjust the rubber plate 12 to fix the rubber rollers with different sizes according to actual conditions, when the screw sleeve 7 starts to slide, the limiting block 8 fixedly connected with the screw sleeve 7 drives the T-shaped rod 11 to slide relatively, so that the rubber plate 12 fixedly connected with the T-shaped rod 11 fixedly clamps the rubber roller in the fixing groove, meanwhile, the spring I10 is in a stretching state, the fixing effect of the rubber plate 12 is further enhanced through the elastic potential energy of the spring I10, the phenomenon that the screw sleeve 7 and the two-way threaded screw rod 6 rotate to influence the fixing effect of the rubber roller is avoided, the support frame 2 is conveniently fixed after the rubber roller is placed on the sliding support frame 2 through bolts, the phenomenon that the support frame 2 slides when the rubber roller rotates to influence the process of surface mounting is avoided, when the rubber sheet is cut, the rubber sheet is placed into the cutting groove, the mounting plate 14 and the cutter holder 15 are driven by the air cylinder 13 to slide downwards to cut the rubber sheet, the manual cutting of a worker is avoided, the working strength of the worker is reduced, and when the cutter holder 15 slides downwards, the elastic potential energy of the second spring 16 is matched with the T-shaped block 17 to reduce the impact generated when the cutter holder 15 is in contact with a rubber sheet, the impact on the blade 18 on the cutter holder 15 is effectively reduced, the service life of the blade 18 is prolonged, the bottom end of the cutter holder 15 is provided with the blade 18 and the cutter groove 19 on the cutting groove in a matched mode, the blade 18 can be used for cutting the rubber sheet conveniently, the sliding fit between the guide block 21 and the guide rod 20 is realized, the guide effect on the sliding of the mounting plate 14 is facilitated, the cushion pad 22 sleeved at the bottom of the guide rod 20 effectively reduces the impact when the guide block 21 falls, and the downward trend of the mounting plate 14 is further reduced.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims

1. The utility model provides a rubber paster device for rubber roll which characterized in that: including workstation (1) and support frame (2), the equal sliding connection in top both sides of workstation (1) has support frame (2), right side the outer wall fixedly connected with control box (5) of support frame (2), the inner chamber fixed mounting of control box (5) has motor (3), the output and the pivot rigid coupling of motor (3), the other end of pivot runs through support frame (2) and fixed block (4) rigid coupling, and is left it is connected with the connecting axle to rotate through the bearing on support frame (2), connecting axle and another fixed block (4) rigid coupling, two the opposite side terminal surface of fixed block (4) all is equipped with the fixed slot, vertical symmetry is equipped with two rubber slab (12) in the fixed slot, rubber slab (12) are connected with adjusting part through coupling assembling.

2. The rubber roller mounting device as claimed in claim 1, wherein: the adjusting part comprises a two-way threaded screw rod (6) and a screw sleeve (7), a first cavity is arranged in the fixed block (4), the inner wall of the first cavity is connected with the two-way threaded screw rod (6) through a bearing in a rotating mode, the top end of the two-way threaded screw rod (6) penetrates through the fixed block (4), the screw sleeve (7) is sleeved on the two-way threaded screw rod (6), and the screw sleeve (7) is fixedly connected with the connecting assembly.

3. The rubber roller mounting device as claimed in claim 2, wherein: coupling assembling includes stopper (8), spring (10) and T type pole (11), about the fixed slot all be equipped with the second cavity in fixed block (4), second cavity inner wall rigid coupling has spring (10), the other end rigid coupling of spring (10) has T type pole (11), T type pole (11) run through second cavity and rubber slab (12) rigid coupling, in the second cavity T type pole (11) are through stopper (8) and silk cover (7) rigid coupling, first cavity is through spacing opening and second cavity intercommunication.

4. The rubber roller mounting device as claimed in claim 3, wherein: the top both sides of workstation (1) all are equipped with spout and a plurality of screw, support frame (2) and spout sliding connection, support frame (2) pass through bolt and workstation (1) threaded connection.

5. The rubber roller mounting device as claimed in claim 4, wherein: the cutting groove is formed in the bottom of the workbench (1), the air cylinder (13) is fixedly mounted in the inner cavity of the workbench (1) above the cutting groove, the bottom end of the air cylinder (13) extends into the cutting groove and is fixedly connected with the mounting plate (14), and the mounting plate (14) is fixedly connected with the cutter holder (15) through the buffer assembly.

6. The rubber roller mounting device as claimed in claim 5, wherein: buffer unit includes two (16) of spring and T type piece (17), mounting panel (14) bottom is equipped with a plurality of dashpots, the rigid coupling has two (16) of spring in the dashpot, the bottom rigid coupling of two (16) of spring has T type piece (17), mounting panel (14) and blade holder (15) rigid coupling are run through to the bottom of T type piece (17).

7. The rubber roller mounting device as claimed in claim 6, wherein: the end face of the bottom of the cutter holder (15) is uniformly and fixedly connected with a plurality of blades (18), a plurality of cutter grooves (19) are formed in the bottom of the cutting groove, and the cutter grooves (19) are matched with the blades (18).

8. The rubber roller mounting device as claimed in claim 7, wherein: the cutting groove is characterized in that guide grooves are formed in the end faces of the two sides of the cutting groove, guide rods (20) are fixedly connected into the guide grooves, cushions (22) are sleeved at the bottoms of the guide rods (20), guide blocks (21) are fixedly connected to the two sides of the mounting plate (14), and the guide blocks (21) are connected with the guide rods (20) in a sliding mode.