CN209906110U

CN209906110U - Full-automatic winder convenient to change wire clamping mechanism

Info

Publication number: CN209906110U
Application number: CN201920216362.2U
Authority: CN
Inventors: 张正尧; 程兴斌; 周旭记; 罗忠明
Original assignee: Huangshan Sibejo Robot Automation Equipment Co Ltd
Current assignee: Huangshan Sibejo Robot Automation Equipment Co Ltd
Priority date: 2019-02-20
Filing date: 2019-02-20
Publication date: 2020-01-07
Anticipated expiration: 2029-02-20

Abstract

The utility model relates to an automated production field just discloses a full-automatic spooler convenient to change trapping mechanism, including the spooler, the connecting plate is installed at the top of spooler rear side, the top fixed mounting of connecting plate has fixed baseplate, fixed baseplate's top swing joint has trapping mechanism mounting panel. The utility model discloses a when the position of trapping mechanism needs the adjustment, can slide on the mounting panel spout through control trapping mechanism mounting panel, make trapping mechanism's position adjustment more convenient, trapping mechanism installs inside trapping mechanism mounting panel, so that trapping mechanism's change, fix trapping mechanism through the magnetic force between first magnet and the second magnet, can realize trapping mechanism's quick replacement, and the operation is comparatively simple and convenient, the bodily injury that probably causes when having avoided traditional change trapping mechanism, simultaneously the effectual work efficiency that has improved, it has brought very big convenience to change trapping mechanism for the staff.

Description

Full-automatic winder convenient to change wire clamping mechanism

Technical Field

The utility model relates to an automated production field specifically is a full-automatic spooler convenient to change thread tension mechanism.

Background

The full-automatic winding machine is a machine for winding a linear object on a specific workpiece, is a new developed machine, and is designed to meet the requirements of high efficiency and high yield, the full-automatic winding machine generally adopts a multi-head linkage design, most domestic manufacturers refer to the design of imported machines in Taiwan provinces and other places, a programmable controller is adopted as a control core of the machine, and the functions of automatic wire arrangement, automatic foot winding, automatic wire cutting, automatic framework loading and unloading and the like are completed by matching with a mechanical arm, a pneumatic control element and an execution accessory.

Chinese patent application number is CN 206569811U's an automatic spooling equipment, which comprises a bod, be provided with electrical system and winding system on the organism, electrical system control winding system, the spool passes through winding motor and rotates, the extending direction motion of cord gripper mechanism along the spool, the spool rotates the in-process, cord gripper mechanism slides according to predetermined wire winding procedure, the effectual wire winding of distinguishing to each winding, realize full-automatic wire winding, and it is efficient to wind, but the utility model discloses a cord gripper mechanism changes comparatively inconveniently, and can not be fine fixed, consequently need design out the full-automatic spooler of being convenient for change cord gripper mechanism and solve the problem that the aforesaid provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a full-automatic spooler convenient to change clamping mechanism possesses clamping mechanism's change and fixed advantage such as comparatively convenient, has solved clamping mechanism and has changed comparatively inconveniently, can not fine fixed problem moreover.

(II) technical scheme

For the change and the fixed comparatively convenient purpose that realize above-mentioned trapping mechanism, the utility model provides a following technical scheme: the utility model provides a full-automatic spooler convenient to change clamping mechanism, includes the spooler, the connecting plate is installed at the top of spooler rear side, the top fixed mounting of connecting plate has fixed baseplate, fixed baseplate's top swing joint has clamping mechanism mounting panel, the status indicator board is installed at the top on fixed baseplate right side, the workstation is installed on the spooler right side, and the top on workstation right side is installed the controller, the left side of workstation is equipped with the spool, positioning mechanism is installed to one side of clamping mechanism mounting panel.

Preferably, the clamping mechanism is installed at the top of the wire clamping mechanism installing plate, and a wire clamping mechanism placing groove is formed in the middle of the clamping mechanism.

Preferably, the top of the fixed base is provided with a mounting plate sliding groove along the horizontal direction, and the wire clamping mechanism mounting plate is in sliding connection with the mounting plate sliding groove.

Preferably, the clamping groove has all been seted up to the both sides at clamping mechanism top, just the clamping groove is located the both sides of double-layered line mechanism standing groove, second magnet is installed to the bottom of clamping groove, the top of second magnet is equipped with first magnet, the top of first magnet is connected with the fixture block, the top fixedly connected with splint of fixture block, splint keep away from the bottom of double-layered line mechanism standing groove one side and install the connecting block, the bottom of connecting block is connected with the turning block, the middle part fixed mounting of turning block has the axis of rotation, one side that the line mechanism standing groove was kept away from to the turning block is connected with presses the briquetting, the bottom of keeping away from double-layered line mechanism standing groove one side according to the briquetting is connected with first spring, just the bottom fixed connection of first spring is in the top of double-layered line mechanism mounting panel, one side that the.

Preferably, the draw-in groove is kept away from one side of double-layered line mechanism standing groove and has been seted up the auxiliary tank, the spring post is installed along vertical direction to the inside of auxiliary tank, the outside of spring post is around being equipped with reset spring, the outside of spring column bottoms portion all is connected with presses the clamp plate, just press the clamp plate to be located reset spring's below, one side fixed mounting that the connecting block is close to the auxiliary tank has supplementary piece, just supplementary piece is located the below of pressing the clamp plate.

Preferably, positioning mechanism has seted up the activity groove along vertical direction, four stoppers have been seted up to the inboard in activity groove, the inside swing joint in activity groove has the regulation stock, the top fixed mounting who adjusts the stock has the regulation quarter butt, the middle part fixed mounting who adjusts the stock has first limiting plate, just first limiting plate is located the inboard of four stoppers, positioning mechanism's fixed mounting behind one's back has the correcting plate, the bottom of correcting plate is connected with the second spring, just the second spring is around locating the outside of adjusting the stock, one side fixed mounting that positioning mechanism kept away from the regulation stock has the positioning mechanism mounting panel.

Preferably, one side of the connecting plate, which is far away from the fixed base, is provided with a positioning mechanism sliding groove, the positioning mechanism sliding groove is located under the adjusting long rod, the bottom end of the adjusting long rod is fixedly connected with a second limiting plate, and the second limiting plate is located on the inner side of the positioning mechanism sliding groove.

(III) advantageous effects

Compared with the prior art, the utility model provides a full-automatic spooler convenient to change trapping mechanism possesses following beneficial effect:

1. in order to solve the problem that the wire clamping mechanism is inconvenient to replace, the scheme provides the design of the mounting plate of the wire clamping mechanism, solves the problem that the wire clamping mechanism is inconvenient to replace, firstly fixes the wire end on the wire clamping mechanism, then controls the winding shaft to rotate, and simultaneously winds the coil on the outer side of the winding shaft, the indicator light is lighted up according to different working states, so that the user can conveniently and timely know the working state of the equipment, and performs corresponding operation, the wire clamping mechanism is arranged in the wire clamping mechanism mounting plate so as to be convenient for replacing the wire clamping mechanism, the magnetic force between the first magnet and the second magnet is used for fixing the wire clamping mechanism, so that the quick replacement of the wire clamping mechanism can be realized, but also has simple and convenient operation, avoids the personal injury possibly caused by replacing the traditional wire clamping mechanism, meanwhile, the working efficiency is effectively improved, and great convenience is brought to workers to replace the wire clamping mechanism.

2. In order to solve the problem that the fixing cannot be well carried out in the replacement process, the scheme provides the design of the positioning mechanism, and the problem that the fixing cannot be well carried out in the replacement process is solved, when the position of the wire clamping mechanism mounting plate needs to be adjusted, the adjusting long rod can move downwards by pressing the adjusting short rod, the second limiting plate can be separated from the positioning mechanism sliding groove at the moment, then the positioning mechanism is pushed to move along the horizontal direction, so that the aim of adjusting the position of the wire clamping mechanism mounting plate is fulfilled, when the adjusting short rod is adjusted to a proper position, the adjusting short rod can be loosened, the adjusting long rod can move upwards under the tension of a second spring until the second limiting plate can be contacted with the positioning mechanism sliding groove, the second limiting plate can be clamped in the positioning mechanism sliding groove during the contact, so that the positioning mechanism can be well fixed on the connecting plate, and the aim of fixing the wire clamping mechanism mounting plate is fulfilled, the fixing of the wire clamping mechanism in the replacement process is more convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of the bobbin winder of the present invention;

FIG. 2 is a schematic view of the mounting structure of the mounting plate of the wire clamping mechanism of the present invention;

FIG. 3 is a schematic cross-sectional structure view of the clamping mechanism of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure of the positioning mechanism of the present invention;

FIG. 5 is a schematic view of the structure at the position A of the present invention;

fig. 6 is the left side surface structure schematic diagram of the installation plate of the wire clamping mechanism of the present invention.

In the figure: 1. a connecting plate; 2. a winder; 3. a fixed base; 4. a wire clamping mechanism mounting plate; 5. a positioning mechanism; 6. a status indicator panel; 7. a controller; 8. a spool; 9. mounting plate chutes; 10. a wire clamping mechanism placing groove; 11. a clamping mechanism; 12. a positioning mechanism sliding groove; 13. a splint; 14. rotating the block; 15. a fixing plate; 16. a pressing block; 17. a spring post; 18. a card slot; 19. an auxiliary groove; 20. an auxiliary block; 21. connecting blocks; 22. a rotating shaft; 23. a first spring; 24. adjusting the short rod; 25. a movable groove; 26. a first limit plate; 27. a correction plate; 28. a second spring; 29. a second limiting plate; 30. a limiting block; 31. adjusting the long rod; 32. a positioning mechanism mounting plate; 33. a clamping block; 34. a pressing plate; 35. a first magnet; 36. a second magnet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, a full-automatic winder convenient for replacing a wire clamping mechanism comprises a winder 2, a connecting plate 1 is installed at the top of the rear side of the winder 2, a fixed base 3 is fixedly installed at the top of the connecting plate 1, a wire clamping mechanism mounting plate 4 is movably connected to the top of the fixed base 3, a state indicating plate 6 is installed at the top of the right side of the fixed base 3, a workbench is installed at the right side of the winder 2, a controller 7 is installed at the top of the right side of the workbench, a winding shaft 8 is arranged at the left side of the workbench, a positioning mechanism 5 is installed at one side of the wire clamping mechanism mounting plate 4, when the winder is used, a wire end is fixedly installed on the wire clamping mechanism, then the winding shaft 8 is controlled to rotate, a coil is wound on the outer side of the winding shaft 8, an indicating lamp is lightened according to different working states, the wire clamping mechanism is arranged in the wire clamping mechanism mounting plate 4 so as to be convenient for replacing the wire clamping mechanism.

Furthermore, a clamping mechanism 11 is installed at the top of the wire clamping mechanism installation plate 4, a wire clamping mechanism placing groove 10 is formed in the middle of the clamping mechanism 11, the wire clamping mechanism can be installed inside the wire clamping mechanism placing groove 10 in the middle of the clamping mechanism 11, and the wire clamping mechanism can be replaced only by adjusting the clamping mechanism 11.

Furthermore, a mounting plate sliding groove 9 is formed in the top of the fixing base 3 in the horizontal direction, the wire clamping mechanism mounting plate 4 is connected with the mounting plate sliding groove 9 in a sliding mode, and when the position of the wire clamping mechanism needs to be adjusted, the wire clamping mechanism mounting plate 4 can be controlled to slide on the mounting plate sliding groove 9, so that the position of the wire clamping mechanism can be adjusted more conveniently.

Further, the two sides of the top of the clamping mechanism 11 are both provided with clamping grooves 18, the clamping grooves 18 are located on the two sides of the wire clamping mechanism placing groove 10, the bottom of the clamping groove 18 is provided with a second magnet 36, the top of the second magnet 36 is provided with a first magnet 35, the top of the first magnet 35 is connected with a clamping block 33, the top of the clamping block 33 is fixedly connected with a clamping plate 13, the bottom of the clamping plate 13, far away from the wire clamping mechanism placing groove 10, is provided with a connecting block 21, the bottom of the connecting block 21 is connected with a rotating block 14, the middle of the rotating block 14 is fixedly provided with a rotating shaft 22, one side of the rotating block 14, far away from the wire clamping mechanism placing groove 10, is connected with a pressing block 16, the bottom of the pressing block 16, far away from the wire clamping mechanism placing groove 10, is connected with a first spring 23, the bottom end of the first spring, when the clamping mechanism is used, the pressing block 16 is pressed, the connecting block 21 drives the clamping plate 13 to rotate at the moment, meanwhile, the clamping plate 13 can be driven to move upwards through rotation of the rotating shaft 22, then the pressing plate 34 arranged on the auxiliary block 20 also lifts the clamping plate 13 through the assistance of magnets which lift up mutual attraction, a user can install the clamping mechanism in the clamping mechanism placing groove 10, the pressing block 16 is put down, the first magnet 35 and the second magnet 36 attract each other, and the purpose of fixing the clamping mechanism in the clamping mechanism placing groove 10 is achieved.

Furthermore, an auxiliary groove 19 is formed in one side of the clamping groove 18, which is far away from the wire clamping mechanism placing groove 10, a spring column 17 is installed in the auxiliary groove 19 along the vertical direction, a return spring is wound on the outer side of the spring column 17, the outer side of the bottom of the spring column 17 is connected with a pressing plate 34, the pressing plate 34 is located below the return spring, an auxiliary block 20 is fixedly installed on one side of the connecting block 21, which is close to the auxiliary groove 19, the auxiliary block 20 is located below the pressing plate 34, the auxiliary groove 19 and the auxiliary block 20 can lift the clamping plate 13 to a certain extent, the clamping plate 13 can be lifted by controlling the first magnet 35 and the second magnet 36 to be separated, the purpose of replacing the wire clamping mechanism in the wire clamping mechanism placing groove 10 is achieved, the spring column 17 and the return spring on the outer side can limit the clamping plate 13, and the position of the clamping plate 13 can be well prevented from shifting in the moving process, simultaneously reset spring can play certain cushioning effect to splint 13 activity process, can be fine prevent the wearing and tearing of clamping mechanism 11 in the activity process, it is more convenient to make the use, the problem of spooler 2 convenient inadequately is solved, fix clamping mechanism through the magnetic force between first magnet 35 and second magnet 36, can realize clamping mechanism's quick replacement, and the operation is comparatively simple and convenient, the bodily injury that probably causes when having avoided traditional change clamping mechanism, simultaneously effectual work efficiency that has improved, it brings very big convenience to change clamping mechanism for the staff.

Further, the positioning mechanism 5 is provided with a movable groove 25 along the vertical direction, the inner side of the movable groove 25 is provided with four limit blocks 30, the inner part of the movable groove 25 is movably connected with an adjusting long rod 31, the top part of the adjusting long rod 31 is fixedly provided with an adjusting short rod 24, the middle part of the adjusting long rod 31 is fixedly provided with a first limit plate 26, the first limit plate 26 is positioned at the inner side of the four limit blocks 30, the back of the positioning mechanism 5 is fixedly provided with a correcting plate 27, the bottom part of the correcting plate 27 is connected with a second spring 28, the second spring 28 is wound at the outer side of the adjusting long rod 31, one side of the positioning mechanism 5 far away from the adjusting long rod 31 is fixedly provided with a positioning mechanism mounting plate 32, the positioning mechanism 5 can fix the wire clamping mechanism mounting plate 4, when the position of the wire clamping mechanism mounting plate 4 needs to be adjusted, the adjusting long, at this moment, the second limiting plate 29 can be separated from the positioning mechanism sliding groove 12, and then the positioning mechanism 5 is pushed to move along the horizontal direction, so as to achieve the purpose of adjusting the position of the wire clamping mechanism mounting plate 4, when the proper position is adjusted, the short rod 24 can be loosened and adjusted, at this moment, the long rod 31 can move upwards under the tension of the second spring 28, until the second limiting plate 29 can be contacted with the positioning mechanism sliding groove 12, the second limiting plate 29 can be clamped inside the positioning mechanism sliding groove 12 during contact, so that the positioning mechanism 5 is well fixed on the connecting plate 1, and the purpose of fixing the wire clamping mechanism mounting plate 4 is achieved.

Further, one side of the connecting plate 1, which is far away from the fixed base 3, is provided with a positioning mechanism sliding groove 12, the positioning mechanism sliding groove 12 is positioned under the adjusting long rod 31, the bottom end of the adjusting long rod 31 is fixedly connected with a second limiting plate 29, the second limiting plate 29 is positioned on the inner side of the positioning mechanism sliding groove 12, the second limiting plate 29 can control the wire clamping mechanism mounting plate 4 to slide when not in contact with the positioning mechanism sliding groove 12, when the second limiting plate 29 is in contact with the positioning mechanism sliding groove 12, the second limiting plate 29 can be clamped inside the positioning mechanism sliding groove 12, and the purpose of conveniently controlling the position adjustment of the wire clamping mechanism mounting plate 4 is achieved.

The working principle is as follows: the wire clamping mechanism can be arranged in a wire clamping mechanism placing groove 10 in the middle of a clamping mechanism 11, the wire clamping mechanism can be replaced only by adjusting the clamping mechanism 11, when the position of the wire clamping mechanism needs to be adjusted, the position of the wire clamping mechanism can be adjusted more conveniently by controlling a wire clamping mechanism mounting plate 4 to slide on a mounting plate sliding groove 9, when the wire clamping mechanism is used, a pressing block 16 is pressed, a connecting block 21 drives a clamping plate 13 to rotate at the moment, meanwhile, the upward movement is driven by the rotation of a rotating shaft 22, then, a pressing plate 34 arranged on an auxiliary block 20 also lifts the clamping plate 13 by lifting magnets which attract each other, a user can install the wire clamping mechanism in the wire clamping mechanism placing groove 10, the pressing block 16 is put down, a first magnet 35 and a second magnet 36 attract each other, the purpose of fixing the wire clamping mechanism in the wire clamping mechanism placing groove 10 is achieved, and the first magnet 35 and the second magnet 36 can be separated by controlling, make splint 13 lift, reach the purpose of changing the inside wire clamping mechanism of wire clamping mechanism standing groove 10, the reset spring in spring post 17 and the outside can carry on spacingly to splint 13, can be fine prevent that splint 13 from taking place the skew at removal in-process position, reset spring can play certain cushioning effect to splint 13 moving process simultaneously, can be fine prevent the wearing and tearing of clamping mechanism 11 in the moving process, make the use more convenient, the problem of spooler 2 convenient inadequately has been solved, fix wire clamping mechanism through the magnetic force between first magnet 35 and the second magnet 36, can realize wire clamping mechanism's quick replacement, and the operation is comparatively simple and convenient, the bodily injury that probably causes when having avoided traditional change wire clamping mechanism, simultaneously effectual work efficiency that has improved, it brings very big convenience to change wire clamping mechanism for the staff.

To sum up, this kind of trapping mechanism of spooler changes comparatively conveniently, fix trapping mechanism through the magnetic force between first magnet 35 and the second magnet 36, can realize trapping mechanism's quick replacement, and it is comparatively simple and convenient to operate, the bodily injury that probably causes when having avoided traditional change trapping mechanism, simultaneously effectual work efficiency that has improved, it has brought very big convenience to change trapping mechanism for the staff, can control trapping mechanism mounting panel 4 and slide when second limiting plate 29 and positioning mechanism sliding tray 12 contactless, when second limiting plate 29 and positioning mechanism sliding tray 12 contact, second limiting plate 29 can block inside positioning mechanism sliding tray 12, reach the purpose of convenient control trapping mechanism mounting panel 4 position adjustment.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a full-automatic spooler convenient to change clamping mechanism, includes spooler (2), its characterized in that: connecting plate (1) is installed at the top of spooler (2) rear side, the top fixed mounting of connecting plate (1) has fixed baseplate (3), the top swing joint of fixed baseplate (3) has wire clamping mechanism mounting panel (4), status indicator board (6) are installed at the top on fixed baseplate (3) right side, the workstation is installed on spooler (2) right side, and controller (7) are installed at the top on workstation right side, and the left side of workstation is equipped with spool (8), positioning mechanism (5) are installed to one side of wire clamping mechanism mounting panel (4).

2. The fully automatic winder convenient for replacing the wire clamping mechanism according to claim 1, characterized in that: clamping mechanism (11) are installed at the top of clamping mechanism mounting panel (4), clamping mechanism standing groove (10) have been seted up at clamping mechanism's (11) middle part.

3. The fully automatic winder convenient for replacing the wire clamping mechanism according to claim 1, characterized in that: mounting panel spout (9) have been seted up along the horizontal direction at the top of fixed baseplate (3), just sliding connection between clamping mechanism mounting panel (4) and mounting panel spout (9).

4. The fully automatic winder convenient for replacing the wire clamping mechanism according to claim 2, characterized in that: the clamping mechanism is characterized in that clamping grooves (18) are formed in two sides of the top of the clamping mechanism (11), the clamping grooves (18) are located on two sides of the wire clamping mechanism placing groove (10), a second magnet (36) is installed at the bottom of each clamping groove (18), a first magnet (35) is arranged at the top of each second magnet (36), a clamping block (33) is connected to the top of each first magnet (35), a clamping plate (13) is fixedly connected to the top of each clamping block (33), a connecting block (21) is installed at the bottom of one side, away from the wire clamping mechanism placing groove (10), of each clamping plate (13), a rotating block (14) is connected to the bottom of the connecting block (21), a rotating shaft (22) is fixedly installed in the middle of each rotating block (14), a pressing block (16) is connected to one side, away from the wire clamping mechanism placing groove (10), of each rotating block (14), and a first spring (23) is connected to the bottom of one side, away, and the bottom end of the first spring (23) is fixedly connected to the top of the wire clamping mechanism mounting plate (4), and one side, away from the rotating block (14), of the rotating shaft (22) is connected with a fixing plate (15).

5. The fully automatic winder convenient for replacing the wire clamping mechanism according to claim 4, characterized in that: auxiliary groove (19) have been seted up to draw-in groove (18) one side of keeping away from double-layered line mechanism standing groove (10), spring post (17) are installed along vertical direction to auxiliary groove (19) inside, the outside of spring post (17) is around being equipped with reset spring, the outside of spring post (17) bottom all is connected with presses clamp plate (34), just press clamp plate (34) to be located reset spring's below, one side fixed mounting that connecting block (21) are close to auxiliary groove (19) has supplementary piece (20), just supplementary piece (20) are located the below of pressing clamp plate (34).

6. The fully automatic winder convenient for replacing the wire clamping mechanism according to claim 1, characterized in that: activity groove (25) have been seted up along vertical direction in positioning mechanism (5), four stopper (30) have been seted up to the inboard in activity groove (25), the inside swing joint in activity groove (25) has regulation stock (31), the top fixed mounting who adjusts stock (31) has regulation quarter butt (24), the middle part fixed mounting who adjusts stock (31) has first limiting plate (26), just first limiting plate (26) are located the inboard of four stopper (30), fixed mounting behind one's back of positioning mechanism (5) has correcting plate (27), the bottom of correcting plate (27) is connected with second spring (28), just second spring (28) are around locating the outside of adjusting stock (31), one side fixed mounting that adjusting stock (31) was kept away from in positioning mechanism (5) has positioning mechanism mounting panel (32).

7. The fully automatic winder convenient for replacing the wire clamping mechanism according to claim 1, characterized in that: positioning mechanism sliding tray (12) have been seted up to one side that fixed baseplate (3) were kept away from in connecting plate (1), just positioning mechanism sliding tray (12) are located and adjust under stock (31), the bottom fixedly connected with second limiting plate (29) of adjusting stock (31), just second limiting plate (29) are located the inboard of positioning mechanism sliding tray (12).