CN114289266A

CN114289266A - Production device for environment-friendly decorative material plate

Info

Publication number: CN114289266A
Application number: CN202111598378.2A
Authority: CN
Inventors: 陆运军; 杨昌益; 周文生
Original assignee: Hunan Lvzhou New Material Technology Co ltd
Current assignee: Hunan Lvzhou New Material Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-04-08

Abstract

The invention relates to the field of decorative material production, in particular to an environment-friendly decorative material plate production device which comprises a base, wherein a lifting and rotating piece is arranged inside the base, a fixed plate piece is arranged at the end part of the lifting and rotating piece, a fixed frame extends from the upper end surface of the base, a fixed piece is arranged at the end part of the fixed frame, two groups of connecting frames are symmetrically arranged on the outer surface of the fixed piece, a cleaning piece is arranged at the end part of one group of connecting frames, the cleaning piece is positioned right above the fixed plate piece, and a painting piece is arranged at the end part of the other group of connecting frames. The invention can carry out rework production on the workpiece, improve the applicability of the workpiece, and ensure the quality of painting and the normal operation of production operation.

Description

Production device for environment-friendly decorative material plate

Technical Field

The invention relates to the field of decorative material production, in particular to an environment-friendly decorative material plate production device.

Background

In the process of producing the environment-friendly decorative material, a production device is often required to be used for painting round plate workpieces, the phenomenon of poor painting is caused by factors such as surface flaws after painting of some workpieces, reworking production is required to be carried out to remove the paint on the poor workpieces and paint is applied again, however, the existing production device can only carry out painting operation, so that the painting operation cannot be carried out during the production of reworked workpieces, and the applicability of the reworking workpiece is seriously influenced.

Disclosure of Invention

The invention aims to solve the defects in the background art and provides an environment-friendly decorative material plate production device.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the utility model provides an environmental protection decorative material board apparatus for producing, includes the base, the internally mounted of base has the piece that rises to change, solid plate spare is installed to the tip that rises to change the piece, the up end of base extends there is the mount, the mounting is installed to the tip of mount, two sets of links are installed to the surface symmetry of mounting, and one of them is a set of the tip of link is installed and is clear away the piece, clear away and be located solid plate spare directly over, another group the brush lacquer spare is installed to the tip of link.

Preferably, the equal slope of terminal surface extends there is the reinforcing frame around the mount, the tip and the base fixed connection of reinforcing frame, it includes the bearing groove that runs through and set up in the side of base to rise the piece, the inside laminating of bearing groove is installed and is born the frame, the shape that bears the frame is the T font, the tip fixed mounting who bears the frame has brake motor, the inside bottom surface fixed mounting who bears the groove has electronic jar, the tip of electronic jar and the lower terminal surface fixed connection who bears the frame.

Preferably, the solid board spare includes coaxial fixed mounting at the epaxial threaded rod of brake motor's output, the coaxial inlaying of tip of threaded rod has the tray, the up end ring array of tray runs through and has seted up four groups of quad slit, four groups the inside of quad slit is inlayed respectively and is had four groups guide bars, four groups the surface of guide bar is laminated respectively and is installed four groups uide bushing, the up end fixed mounting of uide bushing has the ring of gathering together, the outside of threaded rod is screwed threaded turntable, the slope of the surface top edge department of threaded turntable is rotated and is connected with the pull rod, the tip of pull rod is rotated with the lower extreme of uide bushing and is connected.

Preferably, the mounting is including inlaying the solid fixed ring at the tip of mount, gu fixed ring's inside coaxial arrangement has the post of stretching out, and is two sets of the link is all fixed in the surface of stretching out the post and is close to a side edge department, the surface of stretching out the post is close to opposite side edge and has two sets of stationary dogs, and is two sets of the tip of stationary dog all is seted up flutedly, gu fixed ring laminates in the inside of recess, the side of stationary dog is run through and is screwed fixing stud, fixing stud runs through in solid fixed ring's side.

Preferably, the clearing part comprises a lower fixed seat fixedly installed at the end part of one of the connecting frames, a grinding rod is embedded in the lower fixed seat in a rotating mode and located right above the tray, the length of the grinding rod is larger than the radius of the tray, a servo motor is installed on the side face of the lower fixed seat, and the end part of the servo motor is fixedly connected with the grinding rod.

Preferably, the side slope of solid seat extends down has the support body, the tip and the servo motor fixed connection of support body, the preceding terminal surface slope of solid seat extends down has the frame of stretching out, the preceding terminal surface fixed mounting who stretches out the frame has the air duct, the lower terminal surface of air duct runs through to inlay has the multiunit air cock, the air cock is the setting of past slope, the intake pipe is installed to the upper end of air duct.

Preferably, the mopping piece includes that fixed mounting is at the last solid seat of the end of another group link, go up the preceding terminal surface of solid seat and install and lead the lacquer pipe, the upper end of leading the lacquer pipe is run through and is inlayed there is the multiunit discharge pipe, the lower extreme of leading the lacquer pipe is run through and is inlayed and have into the lacquer pipe, the up end elastic mounting who goes up solid seat has and compresses tightly the seat, the up end that compresses tightly the seat extends towards the place ahead direction slope of keeping away from the discharge pipe and has scrapes the strip, the side of scraping the strip is rotated and is inlayed and has the guide pulley, the front end that compresses tightly the seat is installed the brush, the up end of scraping the strip is opened and is established to the cambered surface, the top surface of guide pulley is higher than the up end of scraping the strip.

Preferably, the preceding terminal surface that compresses tightly the seat extends and has fixed cell body, fixed cell body with compress tightly seat integrated into one piece, the brush is laminated in the inside of fixed cell body, the preceding terminal surface of fixed cell body runs through to screw and presses the clamp bolt, press bolt's tip compresses tightly on the brush, the lower terminal surface edge of going up solid seat extends and has the framework, the lower terminal surface laminating of framework runs through installs the cylinder, the cylinder laminating runs through in the lower terminal surface of last solid seat, the tip of cylinder with compress tightly seat fixed connection, the coaxial inlaying in the outside of cylinder has the pressure disk, the pressure disk laminating runs through in the inside side of framework, the outside winding of cylinder has the spring body, the spring body is located between the inside bottom surface of pressure disk and framework.

Compared with the prior art, the invention has the following beneficial effects:

1. through the piece of cleaing away that sets up, can drive the stick that grinds round the axle center of self at servo motor's drive and rotate, electronic jar contacts work piece jack-up and pivoted stick that grinds this moment, and drive the work piece rotation under brake motor's effect, in order to utilize the stick that grinds workpiece surface's lacquer in order to polish down, and polish workpiece surface flat, blow down the debris that the production will be polished under the effect of the multiunit air cock that leans out the setting simultaneously from the work piece, can carry out the mopping operation afterwards, with this reach the purpose of carrying out the production of doing over again to the work piece, improve its suitability.

2. Through the mopping spare that sets up, can follow stationary dog and solid fixed ring with fixed stud and unscrew, rotate afterwards and stretch out the post, make the upper solid seat on upper portion be changeed down, guide pulley on the scraping strip and the brush on the fixed cell body are compressed tightly on the work piece by the spring body this moment, in order to make under the effect of guide pulley and scrape and leave the gap between strip and the work piece, lacquer flows through the dispersion of multiunit discharge pipe afterwards and falls on the work piece, and be scraped by subsequent scraping strip and move, in order to scrape away and will scrape unnecessary lacquer through scraping the strip on the work piece, utilize subsequent brush to brush the lacquer of scraping away to move, in order to brush the even brush of lacquer on the work piece, with this quality of guaranteeing the mopping.

3. Through the solid plate spare that sets up, can place the work piece on the tray, rotate the screw thread carousel afterwards, make the screw thread carousel utilize and the threaded rod between the screw thread move down, in order to stimulate the pull rod, and then stimulate the uide bushing of pull rod tip, slide on the guide rod in order to order about the uide bushing, and then drive four groups on the uide bushing and gather together the ring and move inwards in step, in order to press from both sides tightly the work piece, make the work piece spacing under clear away piece and mopping piece simultaneously, in order to guarantee to clear away piece and mopping piece can the full action on the work piece at the during operation, guarantee the normal clear-up of production operation promptly.

Drawings

FIG. 1 is a schematic structural diagram of an apparatus for producing an environmentally friendly decorative material sheet according to the present invention;

FIG. 2 is a schematic view of the gas-guide tube of the apparatus for producing an environmentally friendly decorative material sheet according to the present invention;

FIG. 3 is a schematic view of a fixing ring of the apparatus for producing an environmentally friendly decorative material sheet according to the present invention;

FIG. 4 is a schematic view of a paint guide tube of the apparatus for producing an environmental decorative material sheet according to the present invention;

FIG. 5 is a schematic view of a frame of an apparatus for producing an environmentally friendly decorative material sheet according to the present invention;

FIG. 6 is a bottom view of a pallet tray of the apparatus for producing an environmentally friendly decorative material sheet according to the present invention.

In the figure: 1. a base; 2. a bearing groove; 3. a carrier; 4. an electric cylinder; 5. a brake motor; 6. a pallet tray; 7. a fixed mount; 8. a reinforcing frame; 9. a fixing ring; 10. extending the column; 11. a connecting frame; 12. a lower fixed seat; 13. a servo motor; 14. grinding a rod; 15. an air duct; 16. a paint guide pipe; 17. a projecting frame; 18. an air tap; 19. a guide bar; 20. a guide sleeve; 21. a square hole; 22. gathering rings; 23. a pull rod; 24. a threaded rod; 25. a threaded turntable; 26. a fixed jaw; 27. fixing the stud; 28. an upper fixing seat; 29. a discharge pipe; 30. a frame body; 31. a pressing seat; 32. scraping the strips; 33. a guide wheel; 34. fixing the trough body; 35. a brush; 36. a hold-down bolt; 37. a platen; 38. a cylinder; 39. a spring body.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

The production device for the environment-friendly decorative material plate comprises a base 1, wherein a lifting and rotating piece is arranged inside the base 1, a fixed plate piece is arranged at the end part of the lifting and rotating piece, a fixed frame 7 extends from the upper end surface of the base 1, a fixed piece is arranged at the end part of the fixed frame 7, two groups of connecting frames 11 are symmetrically arranged on the outer surface of the fixed piece, a cleaning piece is arranged at the end part of one group of connecting frames 11 and is positioned right above the fixed plate piece, and a painting piece is arranged at the end part of the other group of connecting frames 11.

The equal slope of terminal surface extends around mount 7 has the strengthening frame 8, the tip and the 1 fixed connection of base of strengthening frame 8, it includes the bearing groove 2 that runs through and sets up in the side of base 1 to rise the piece, the inside laminating of bearing groove 2 is installed and is born frame 3, the shape that bears frame 3 is the T font, the tip fixed mounting who bears frame 3 has brake motor 5, the inside bottom surface fixed mounting who bears groove 2 has electronic jar 4, electronic jar 4's tip and the lower terminal surface fixed connection who bears frame 3, strengthening frame 8 through the setting can strengthen mount 7, bearing groove 2 plays the effect of leading to bearing frame 3, bear frame 3 and play and erect fixed effect to brake motor 5, brake motor 5 plays and drives the work piece when cleaing away and the mopping and carry out pivoted effect.

The plate fixing piece comprises a threaded rod 24 coaxially and fixedly installed on an output shaft of the brake motor 5, a tray plate 6 is coaxially embedded in the end portion of the threaded rod 24, four groups of square holes 21 are formed in the upper end face of the tray plate 6 in a penetrating mode in an annular array mode, four groups of guide rods 19 are respectively embedded in the four groups of square holes 21, four groups of guide sleeves 20 are respectively installed on the outer surfaces of the four groups of guide rods 19 in a fitting mode, gathering rings 22 are fixedly installed on the upper end face of the guide sleeves 20, a threaded rotary disc 25 is screwed on the outer side of the threaded rod 24, a pull rod 23 is connected to the upper edge portion of the outer surface of the threaded rotary disc 25 in an inclined and rotating mode, the end portion of the pull rod 23 is connected with the lower end of the guide sleeve 20 in a rotating mode, the brake motor 5 can be connected with the tray plate 6 through the arranged threaded rod 24, meanwhile, the threaded rod 24 can drive the threaded rotary disc 25 to move up and down, and the threaded rotary disc 25 can drive the guide sleeve 20 to pull the guide sleeve 20, the guide rod 19 plays a role of guiding the guide sleeve 20, and the gathering ring 22 plays a role of clamping and limiting a workpiece.

The mounting is including inlaying the solid fixed ring 9 at the tip of mount 7, gu fixed ring 9's inside coaxial arrangement has the post 10 of stretching out, two sets of link 11 all are fixed in the surface that stretches out post 10 and are close to one side edge, the surface that stretches out post 10 is close to opposite side edge and has two sets of stationary dog 26 of symmetry extension respectively, the tip of two sets of stationary dog 26 all is seted up flutedly, gu fixed ring 9 laminates in the inside of recess, gu fixed jaw 26's side is run through to be screwed has fixing stud 27, fixing stud 27 runs through in gu fixed ring 9's side, gu fixed ring 9 through setting up can bear fixedly to stretching out post 10, fixing stud 26 plays and will stretch out post 10 and erect the effect in order to be located solid fixed ring 9 middle part, cooperate between stationary dog 26 and the fixing stud 27 simultaneously and can be fixed mutually with solid fixed ring 9.

Clear away the piece and include fixed mounting at the lower solid seat 12 of the tip of one of them a set of link 11, the inside of lower solid seat 12 is rotated and is inlayed and has excellent 14 of grinding, excellent 14 of grinding is located tray 6 directly over, the length of excellent 14 of grinding is greater than the radius of tray 6, the side-mounting of lower solid seat 12 has servo motor 13, servo motor 13's tip and excellent 14 fixed connection of grinding, lower solid seat 12 through the setting can bear excellent 14 of grinding, the length of excellent 14 of grinding is greater than the radius of tray 6, can be at the comprehensive work piece that covers of the in-process of polishing.

The side slope of lower solid seat 12 extends there is the support body, the tip and the servo motor 13 fixed connection of support body, the preceding terminal surface slope of lower solid seat 12 extends and has stretched out frame 17, the preceding terminal surface fixed mounting who stretches out frame 17 has air duct 15, the lower terminal surface of air duct 15 runs through to inlay has multiunit air cock 18, air cock 18 is the slope setting outward, the intake pipe is installed to the upper end of air duct 15, the support body through setting up can be fixed servo motor 13, it plays the effect of fixing to air duct 15 to stretch out frame 17, the intake pipe plays the effect of admitting air.

The painting part comprises an upper fixing seat 28 fixedly arranged at the end part of another group of connecting frames 11, a paint guide pipe 16 is arranged on the front end surface of the upper fixing seat 28, a plurality of groups of discharge pipes 29 are embedded in the upper end of the paint guide pipe 16 in a penetrating manner, a paint inlet pipe is embedded in the lower end of the paint guide pipe 16 in a penetrating manner, a pressing seat 31 is elastically arranged on the upper end surface of the upper fixing seat 28, a scraping strip 32 extends obliquely towards the front direction far away from the discharge pipes 29 on the upper end surface of the pressing seat 31, a guide wheel 33 is embedded in the side surface of the scraping strip 32 in a rotating manner, a brush 35 is arranged at the front end of the pressing seat 31, the upper end surface of the scraping strip 32 is opened into a cambered surface, the top surface of the guide wheel 33 is higher than the upper end surface of the scraping strip 32, the upper fixing seat 28 is arranged to play a role in bearing and fixing, the paint inlet pipe plays a role in adding paint into the paint guide pipe 16, the scraping strip 32 extends obliquely towards the front direction far away from the discharge pipes 29, can better scrape paint, the discharge pipes 29 play a role in making the paint fall in a dispersed way, the guide roller 33 serves to ensure that a gap is left between the wiper strip 32 and the workpiece.

A fixed groove body 34 extends from the front end face of the pressing seat 31, the fixed groove body 34 and the pressing seat 31 are integrally formed, a brush 35 is attached inside the fixed groove body 34, a pressing bolt 36 penetrates through and is screwed into the front end face of the fixed groove body 34, the end part of the pressing bolt 36 is pressed onto the brush 35, a frame body 30 extends from the edge of the lower end face of the upper fixed seat 28, a cylinder 38 is mounted on the lower end face of the frame body 30 in a penetrating manner in a fitting manner, the cylinder 38 is mounted on the lower end face of the upper fixed seat 28 in a penetrating manner in a fitting manner, the end part of the cylinder 38 is fixedly connected with the pressing seat 31, a pressure plate 37 is coaxially embedded outside the cylinder 38, the pressure plate 37 is mounted on the inner side face of the frame body 30 in a penetrating manner in a fitting manner, a spring body 39 is wound outside the cylinder 38, the spring body 39 is positioned between the pressure plate 37 and the inner bottom face of the frame body 30, the brush 35 can be limited through the fixed groove body 34, and the pressing bolt 36 plays a role in pressing and fixing the brush 35, the cooperation between the frame 30 and the pressure plate 37 can ensure that the column 38 moves linearly, and further ensure that the pressing seat 31 moves linearly, and the spring body 39 plays a role in pressing, so that the guide wheel 33 and the hairbrush 35 can be always in contact with a workpiece.

When the device is used, a workpiece is placed on the supporting plate disc 6, then the threaded rotary disc 25 is rotated, the threaded rotary disc 25 moves downwards by utilizing the threads between the threaded rod 24 to pull the pull rod 23, further the guide sleeve 20 at the end part of the pull rod 23 is pulled to drive the guide sleeve 20 to slide on the guide rod 19, further the four groups of gathering rings 22 on the guide sleeve 20 are driven to synchronously move inwards to clamp the workpiece, meanwhile, the workpiece is limited under the cleaning piece and the painting piece, then the grinding rod 14 is driven to rotate around the self axis under the action of the servo motor 13, at the moment, the electric cylinder 4 jacks up the workpiece to be contacted with the rotating grinding rod 14 and drives the workpiece to rotate under the action of the brake motor 5, so that the painting on the surface of the workpiece is ground by utilizing the grinding rod 14, and simultaneously, sundries generated by grinding are blown down from the workpiece under the action of the plurality of outwards inclined air nozzles 18, the fixing stud 27 is then screwed down from the fixing claw 26 and the fixing ring 9, and then the extending column 10 is rotated to make the upper fixing seat 28 on the upper portion rotated down, at this time, the guide wheel 33 on the scraping strip 32 and the brush 35 on the fixing groove body 34 are pressed on the workpiece by the spring body 39, so that a gap is left between the scraping strip 32 and the workpiece under the action of the guide wheel 33, and then the paint is scattered and flows out through a plurality of groups of discharge pipes 29 and falls on the workpiece, and is scraped by the subsequent scraping strip 32, so that the paint falling on the workpiece is scraped by the scraping strip 32 and the redundant paint is hung, and then the scraped paint is brushed by the subsequent brush 35, so that the paint is uniformly brushed on the workpiece.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an environmental protection decorative material board apparatus for producing, includes base (1), its characterized in that: the internally mounted of base (1) has the piece that rises to change, the solid plate spare is installed to the tip that rises to change, the up end of base (1) extends there is mount (7), the mounting is installed to the tip of mount (7), two sets of link (11) are installed to the surface symmetry of mounting, and one of them is a set of the tip of link (11) is installed and is clear away the piece, clear away and be located solid plate spare directly over, another group the brush lacquer spare is installed to the tip of link (11).

2. The apparatus for producing an environmentally friendly decorative material sheet as defined in claim 1, wherein: the utility model discloses a motor vehicle brake device, including mount (7), reinforcing frame (8) have all inclined to extend to the terminal surface around mount (7), the tip and base (1) fixed connection of reinforcing frame (8), the piece that rises is including running through bearing groove (2) of seting up in the side of base (1), the inside laminating of bearing groove (2) is installed and is born frame (3), the shape that bears frame (3) is the T font, the tip fixed mounting who bears frame (3) has brake motor (5), the inside bottom surface fixed mounting who bears groove (2) has electronic jar (4), the tip of electronic jar (4) and the lower terminal surface fixed connection who bears frame (3).

3. The apparatus for producing an environmentally friendly decorative material sheet as defined in claim 2, wherein: solid board spare includes threaded rod (24) of coaxial fixed mounting on the output shaft of brake motor (5), the coaxial inlaying of tip of threaded rod (24) has tray (6), the up end ring array of tray (6) runs through and has seted up four group quad slit (21), four groups the inside of quad slit (21) is inlayed respectively and is had four groups guide bar (19), four groups the surface of guide bar (19) is laminated respectively and is installed four groups uide bushing (20), the up end fixed mounting of uide bushing (20) has the ring (22) of gathering together, the outside of threaded rod (24) is screwed threaded carousel (25), the slope of the surface top edge department of threaded carousel (25) is rotated and is connected with pull rod (23), the tip of pull rod (23) is rotated with the lower extreme of uide bushing (20) and is connected.

4. The apparatus for producing an environmentally friendly decorative material sheet as defined in claim 1, wherein: the mounting is including inlaying solid fixed ring (9) at the tip of mount (7), the inside coaxial arrangement of solid fixed ring (9) has and stretches out post (10), and is two sets of link (11) all are fixed in the surface of stretching out post (10) and are close to a side edge department, the surface of stretching out post (10) is close to opposite side edge respectively the symmetry and extends and has two sets of stationary dog (26), and is two sets of the tip of stationary dog (26) is all seted up flutedly, gu fixed ring (9) laminate in the inside of recess, the side of stationary dog (26) is run through and is screwed fixing stud (27), fixing stud (27) run through in the side of solid fixed ring (9).

5. The apparatus for producing an environmentally friendly decorative material sheet as claimed in claim 3, wherein: clear away the piece including fixed mounting at the lower solid seat (12) of the tip of one of them a set of link (11), the inside of solid seat (12) is rotated and is inlayed and have excellent (14) down, excellent (14) are located tray dish (6) directly over, the length of excellent (14) of grinding is greater than the radius of tray dish (6), the side-mounting of solid seat (12) has servo motor (13) down, the tip and the excellent (14) fixed connection of grinding of servo motor (13).

6. The apparatus for producing an environmentally friendly decorative material sheet as claimed in claim 5, wherein: the side slope of lower solid seat (12) extends there is the support body, the tip and servo motor (13) fixed connection of support body, the preceding terminal surface slope of lower solid seat (12) extends and has stretch out frame (17), the preceding terminal surface fixed mounting who stretches out frame (17) has air duct (15), the lower terminal surface of air duct (15) runs through to inlay has multiunit air cock (18), air cock (18) are toward outer slope setting, the intake pipe is installed to the upper end of air duct (15).

7. The apparatus for producing an environmentally friendly decorative material sheet as defined in claim 1, wherein: the mopping spare is including fixed mounting at last solid seat (28) of the tip of another set of link (11), go up the preceding terminal surface of solid seat (28) and install lead lacquer pipe (16), the upper end of leading lacquer pipe (16) is run through and is inlayed and have multiunit discharge pipe (29), the lower extreme of leading lacquer pipe (16) is run through and is inlayed and have into lacquer pipe, the up end elastic mounting who goes up solid seat (28) has and compresses tightly seat (31), the up end face that compresses tightly seat (31) is towards the place ahead direction slope of keeping away from discharge pipe (29) and is extended and have scrape strip (32), the side of scraping strip (32) is rotated and is inlayed and has guide pulley (33), brush (35) are installed to the front end that compresses tightly seat (31), the up end of scraping strip (32) is opened and is established the cambered surface, the top surface of guide pulley (33) is higher than the up end of scraping strip (32).

8. The apparatus for producing an environmentally friendly decorative material sheet as claimed in claim 7, wherein: the front end face of the pressing seat (31) extends to form a fixed groove body (34), the fixed groove body (34) and the pressing seat (31) are integrally formed, the brush (35) is attached to the inside of the fixed groove body (34), the front end face of the fixed groove body (34) penetrates through and is screwed with a pressing bolt (36), the end portion of the pressing bolt (36) is pressed on the brush (35), a frame body (30) extends from the edge of the lower end face of the upper fixed seat (28), a cylinder (38) is attached to and penetrates through the lower end face of the upper fixed seat (28), the end portion of the cylinder (38) is fixedly connected with the pressing seat (31), a pressing disc (37) is coaxially embedded in the outer side of the cylinder (38), the pressing disc (37) is attached to and penetrates through the inner side face of the frame body (30), and a spring body (39) is wound on the outer side of the cylinder (38), the spring body (39) is located between the pressure plate (37) and the inner bottom surface of the frame body (30).