CN212423672U

CN212423672U - Cotton filling machine material collecting device

Info

Publication number: CN212423672U
Application number: CN202020648854.1U
Authority: CN
Inventors: 张攀; 尹繁; 苏倩倩; 李敬
Original assignee: Jinan Yifeng Textile Co ltd
Current assignee: Jinan Yifeng Textile Co ltd
Priority date: 2020-04-25
Filing date: 2020-04-25
Publication date: 2021-01-29
Anticipated expiration: 2030-04-25

Abstract

The utility model relates to a fill cotton machine material collecting device belongs to the technical field that fills cotton machine, it includes fixed connection in subaerial supporting seat, the supporting seat up end rotates and is connected with the support frame, it has fixture to support the up end joint, the supporting seat deviates from cotton machine one side and is provided with drive support frame pivoted reciprocating mechanism, the supporting seat bears the frame with parallel one side fixedly connected with of ejection of compact direction, the supporting seat is kept away from and is born one side fixedly connected with guide frame, reciprocating assembly includes the reset assembly that drive support frame pivoted drive assembly and drive support frame reset. The utility model discloses thereby have and replace the workman to rotate the effect that the pillow reduces workman intensity of labour.

Description

Cotton filling machine material collecting device

Technical Field

The utility model belongs to the technical field of cotton-filling machine's technique and specifically relates to a cotton-filling machine material collecting device is related to.

Background

The present cotton-filling machine, also known as a filling machine, is a machine for filling fillers such as PP cotton into plush toys, sofa back cushions, throw pillows or pillow inner leather cases. Is generally applicable to industries such as plush toys, home textiles, furniture, clothes and the like. The cotton-filling machine generally adopts a cold plate as a machine shell, the surface of the cold plate is subjected to plastic spraying or paint spraying treatment, a stirring device is arranged in the cotton-filling machine, a small air storage tank is arranged below the cotton-filling machine, and a foot switch device is arranged in the front of the cotton-filling machine. The filling process is completed by sucking PP cotton, pearl cotton, plastic particles, foam particles or other fillers into a cotton filling machine by using the cotton sucking machine or other equipment, fully stirring the fillers in the cotton filling machine, stepping on a foot switch and filling the fillers into a leather shell of a product to be filled by using the impulsive force of gas.

In the production process of the pillow core, in order to ensure the softness of the pillow core and the comfort of a human body, the pillow core sleeve needs to be filled with pillow core materials, and core products made of high-tech composite materials in the current production have excellent performances in the aspects of elastic restoring force, heat preservation, filling power, comfort, washability, service life and the like. Before filling, the raw cotton needs to be opened by a cotton opener and then filled into the pillow inner sleeve by the cotton filler.

The current chinese utility model patent with the granted bulletin number CN206255837U discloses a cotton filling machine in 2017, 6 months and 16 days, which comprises a machine body, a cotton outlet is arranged on the machine body, a nozzle is arranged on the cotton outlet, a small air storage pipe is arranged in the machine frame, a foot switch is arranged in the machine frame, and the foot switch is connected with the small air storage pipe.

When the pillow core sleeve is filled, the pillow core sleeve is taken up, the opening of the pillow core sleeve is aligned with the spray head, one end of the spray head slides into the pillow core sleeve, the pedal switch is stepped, the small air storage pipe sprays the filling cotton in the machine body into the pillow core sleeve, the pillow core sleeve is rotated to enable the filling cotton to be filled in each position in the pillow core sleeve, and the filled pillow core is placed on one side to be replaced by the next empty pillow core sleeve.

The above prior art solutions have the following drawbacks: when filling the pillowcase, in order to make the cotton packing fill in every position of pillowcase, the staff will adjust the posture always, makes the pillowcase follow and rotates, and intensity of labour is high, brings the influence to workman's health after long-time work.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims at providing a fill cotton machine material collecting device. The pillow core is rotated instead of workers, so that the labor intensity of the workers is reduced.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a cotton filling machine material collecting device, includes fixed connection in subaerial supporting seat, the supporting seat up end rotates and is connected with the support frame, it has fixture to support the up end joint, the supporting seat deviates from cotton filling machine one side and is provided with drive support frame pivoted reciprocating mechanism, the supporting seat bears the frame with parallel one side fixedly connected with of ejection of compact direction, the supporting seat is kept away from and is born a frame one side fixedly connected with guide frame, reciprocating mechanism includes drive support frame pivoted drive assembly and the reset assembly that drive support frame resets.

By adopting the technical scheme, the pillow core sleeve is clamped on the clamping mechanism, the pillow core sleeve is placed in the bearing frame in advance, when filling cotton needs to be filled in the pillow core sleeve, the clamping mechanism with the pillow core sleeve is clamped on the upper end surface of the supporting seat, the nozzle enters the pillow core sleeve, the reciprocating mechanism starts the driving supporting frame to rotate by taking the intersection of the nozzle and the pillow core sleeve as a rotation center, and workers are replaced to rotate the pillow core, so that the labor intensity of the workers is reduced.

The present invention may be further configured in a preferred embodiment as: the supporting seat is fixedly connected with a supporting rod, the supporting seat is rotatably connected to the supporting rod, and the axis of the supporting rod and the axis of the cotton outlet are located on the same vertical surface.

By adopting the technical scheme, the support frame rotates by taking the axis of the support rod as a rotating axis, so that the clamping mechanism with the pillow core sleeve rotates by taking the axis of the support rod as the rotating axis, and the filling cotton can conveniently enter the pillow core sleeve.

The present invention may be further configured in a preferred embodiment as: reset assembly includes vertical fixed connection in subaerial first backup pad, first backup pad is towards two elastic component of support frame one side fixedly connected with, two the elastic component is located the bracing piece both sides respectively, the elastic component is the spring, spring one end fixed connection is in support frame towards first backup pad one side, spring other end fixed connection is in first backup pad towards support frame one side.

Through adopting above-mentioned technical scheme, when the support frame rotated, a spring was stretched, and a spring is compressed, and the spring drives the support frame for the reconversion and rotates to make the support frame reset.

The present invention may be further configured in a preferred embodiment as: the drive assembly includes that fixed connection is close to the second backup pad of supporting seat one side in first backup pad, the vertical rotation of second backup pad up end is connected with first dwang and second dwang, first dwang and second dwang up end are the first cam of coaxial fixedly connected with and second cam respectively, first cam uses the centre of a circle to rotate 180 as the axle center and obtains the second cam, first cam and second cam rotation opposite direction, second backup pad up end fixedly connected with driving motor, the first dwang of driving motor drive and second dwang rotate simultaneously.

Through adopting above-mentioned technical scheme, thereby driving motor starts first cam of drive and the second cam rotates simultaneously, rotate the opposite direction and the relative first cam of second cam and pass 180 and obtain because of first cam and second cam, so the second cam rotates the opposite direction with first cam, after first cam promotes support frame one end and spouts the rotation of cotton machine direction, the support frame resets under the spring action, the second cam rotates and promotes the support frame other end and to spouting cotton machine direction rotation this moment, realize the rotation of support frame, thereby drive fixture and the rotation of pillow core cover, easy operation is convenient.

The present invention may be further configured in a preferred embodiment as: the utility model discloses a worm gear, including first dwang lower extreme, the coaxial fixedly connected with of first dwang lower extreme worm wheel, the coaxial fixedly connected with second worm wheel of second dwang lower extreme, second backup pad up end rotates and is connected with first worm and second worm, first worm and first worm wheel meshing, second worm and second worm wheel meshing, the coaxial fixed connection of first worm and second worm, first worm and second worm helix opposite direction, the coaxial fixed connection of driving motor and first worm.

By adopting the technical scheme, the driving motor is started to drive the first worm and the second worm to rotate, at the moment, the first worm wheel and the second worm wheel are driven by the first worm and the second worm to rotate respectively to drive the first rotating rod and the second rotating rod to rotate, and the rotating directions of the second cam and the first cam are opposite because the spiral lines of the first worm and the second worm are opposite and the second cam rotates 180 degrees relative to the first cam; after the first cam pushes one end of the support frame to rotate in the cotton spraying machine direction, the support frame resets under the action of the spring, and the second cam rotates to push the other end of the support frame to rotate in the cotton spraying machine direction, so that the support frame rotates, the clamping mechanism and the pillow core sleeve are driven to rotate, and the operation is simple and convenient.

The present invention may be further configured in a preferred embodiment as: the clamping mechanism comprises a first connecting rod clamped in the supporting frame, and two groups of clamping components for clamping the pillow core sleeve are arranged on the upper end face of the first connecting rod.

Through adopting above-mentioned technical scheme, the first connecting rod joint can increase the connection stability of pillow cover on the support frame.

The present invention may be further configured in a preferred embodiment as: the centre gripping subassembly includes the second connecting rod of fixed connection in head rod up end, coaxial rotation is connected with the torsional spring on the second connecting rod, it has two connecting plates to articulate on the second connecting rod, the torsional spring both ends point is contradicted respectively in two connecting plates, the torsional spring is contradicted in connecting plate towards another connecting plate one side and torsional spring both ends point and is located same one side of second connecting rod.

Through adopting above-mentioned technical scheme, rotate connecting plate one end and make the connecting plate other end rotatory to with the centre gripping of pillowcase on centre gripping subassembly, conveniently dismantle the installation pillowcase.

The present invention may be further configured in a preferred embodiment as: the bearing frame is located on one side, close to workers, of the supporting frame, a first sliding groove is vertically formed in the bearing frame, the first connecting rod is connected into the first sliding groove in a sliding mode, second sliding grooves are formed in two side walls of the first sliding groove, and two ends of the first connecting rod are connected into the second sliding grooves in a sliding mode.

Through adopting above-mentioned technical scheme, head rod sliding connection is in first spout, and head rod both ends sliding connection is in the second spout to the fixture that will install the pillow core cover conveniently puts things in good order in bearing the frame.

The present invention may be further configured in a preferred embodiment as: the horizontal opening of the upper end face of the material guide frame is provided with a third sliding groove, the direction of the third sliding groove is perpendicular to the discharging direction, and the first connecting rod is connected in the third sliding groove in a sliding mode.

Through adopting above-mentioned technical scheme, the third spout slides to the head rod and plays the guide effect to conveniently hold the fixture who finishes the pillow core cover of filling from one side roll-off, make things convenient for the same collection of workman to handle with the family.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the pillow core sleeve is clamped on the clamping mechanism, the pillow core sleeve is placed in the bearing frame in advance, when filling cotton needs to be filled into the pillow core sleeve, the clamping mechanism with the pillow core sleeve is clamped on the upper end face of the supporting seat, the spray head enters the pillow core sleeve, the reciprocating mechanism starts to drive the supporting frame to rotate by taking the intersection of the spray head and the pillow core sleeve as a rotation center, and workers are replaced to rotate the pillow core, so that the labor intensity of the workers is reduced;

2. when the support frame rotates, one spring is stretched and the other spring is compressed, and the support frame is driven to rotate by the springs in an original state, so that the support frame is reset;

3. the driving motor is started to drive the first worm and the second worm to rotate, at the moment, the first worm wheel and the second worm wheel are driven by the first worm and the second worm to rotate respectively to drive the first rotating rod and the second rotating rod to rotate, and the rotating directions of the second cam and the first cam are opposite because the spiral lines of the first worm and the second worm are opposite and the second cam rotates 180 degrees relative to the first cam; after the first cam pushes one end of the support frame to rotate in the cotton spraying machine direction, the support frame resets under the action of the spring, and the second cam rotates to push the other end of the support frame to rotate in the cotton spraying machine direction, so that the support frame rotates, the clamping mechanism and the pillow core sleeve are driven to rotate, and the operation is simple and convenient.

Drawings

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

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

fig. 3 is a partial schematic structural diagram of the present embodiment, which is mainly used for showing the driving assembly.

Reference numerals: 100. a supporting seat; 110. a support bar; 200. a support frame; 210. a groove; 300. a clamping mechanism; 310. a first connecting rod; 320. a clamping assembly; 321. a second connecting rod; 322. a torsion spring; 323. a connecting plate; 400. a reciprocating mechanism; 410. a drive assembly; 411. a second support plate; 412. a first rotating lever; 413. a second rotating lever; 414. a first worm gear; 415. a second worm gear; 416. a first worm; 417. a second worm; 418. a drive motor; 419. a first cam; 4110. a second cam; 420. a reset assembly; 421. a first support plate; 422. an elastic member; 430. a third support plate; 500. a carrier; 510. a first chute; 520. a second chute; 600. a material guide frame; 610. and a third chute.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a cotton-filling machine material collecting device, including fixed connection in subaerial supporting seat 100, the up end of supporting seat 100 rotates and is connected with support frame 200, supports the up end joint and has had fixture 300, and supporting seat 100 deviates from cotton-filling machine one side and is provided with drive support frame 200 pivoted reciprocating mechanism 400, and supporting seat 100 bears frame 500 with the parallel one side fixedly connected with of ejection of compact direction, and supporting seat 100 keeps away from and bears 500 one side fixedly connected with guide frame 600.

The pillow core sleeve is clamped on the clamping mechanism 300, the pillow core sleeve is placed in the bearing frame 500 in advance, when filling cotton needs to be filled into the pillow core sleeve, the clamping mechanism 300 with the pillow core sleeve is clamped on the upper end face of the supporting seat 100, the spray head enters the pillow core sleeve, the reciprocating mechanism 400 is started to drive the supporting frame 200 to rotate by taking the intersection of the spray head and the pillow core sleeve as a rotation center, after filling is finished, the clamping mechanism 300 is slid onto the material guide frame 600 from the supporting frame 200, and workers can conveniently collect and enter the next process.

Referring to fig. 1, a support rod 110 is fixedly connected to the support base 100, the support base 100 is rotatably connected to the support rod 110, and the axis of the support rod 110 and the axis of the cotton outlet are located on the same vertical plane.

Referring to fig. 1, the clamping mechanism 300 includes a first connecting rod 310 clamped in the supporting frame 200, and two sets of clamping assemblies 320 for clamping the pillow case are disposed on the upper end surface of the first connecting rod 310.

Referring to fig. 1 and 2, the clamping assembly 320 includes a second connecting rod 321 fixedly connected to the upper end surface of the first connecting rod 310, a torsion spring 322 is coaxially and rotatably connected to the second connecting rod 321, two connecting plates 323 are hinged to the second connecting rod 321, two end points of the torsion spring 322 respectively abut against the two connecting plates 323, the torsion spring 322 abuts against one side of the connecting plate 323 facing the other connecting plate 323, and two end points of the torsion spring 322 are located on the same side of the second connecting rod 321.

Referring to fig. 1, a groove 210 is formed on an upper end surface of the supporting frame 200, and a first connecting rod 310 is clamped in the groove 210. Rotating one end of the coupling plate 323 rotates the other end of the coupling plate 323 to clamp the core sleeve to the clamp assembly 320.

Referring to fig. 1, the carriage 500 is located at a side of the supporting frame 200 close to a worker, a first sliding groove 510 is vertically formed on the carriage 500, and the first connecting rod 310 is slidably connected in the first sliding groove 510. The second sliding grooves 520 are disposed on two side walls of the first sliding groove 510, and two ends of the first connecting rod 310 are slidably connected to the second sliding grooves 520.

Referring to fig. 1, a third chute 610 is horizontally arranged on the upper end surface of the material guide frame 600, the direction of the third chute 610 is perpendicular to the discharging direction, and the first connecting rod 310 is slidably connected in the third chute 610.

Referring to fig. 1, the reciprocating mechanism 400 includes a driving assembly 410 for driving the supporting frame 200 to rotate and a resetting assembly 420 for resetting the supporting frame 200.

Referring to fig. 1, the reset assembly 420 includes a first supporting plate 421 vertically and fixedly connected to the ground, two elastic members 422 are fixedly connected to the first supporting plate 421 toward one side of the supporting frame 200, the two elastic members 422 are respectively located at two sides of the supporting rod 110, the elastic members 422 are springs, one end of each spring is fixedly connected to one side of the supporting frame 200 toward the first supporting plate 421, and the other end of each spring is fixedly connected to one side of the first supporting plate 421 toward the supporting frame 200.

When the supporting frame 200 rotates, one spring is stretched and compressed, and the spring drives the supporting frame 200 to rotate for the restitution, so that the supporting frame 200 is reset.

Referring to fig. 1 and 3, the driving assembly 410 includes a second supporting plate 411 fixedly connected to one side of the first supporting plate 421 close to the supporting seat 100, an upper end surface of the second supporting plate 411 is vertically and rotatably connected with a first rotating rod 412 and a second rotating rod 413, upper end surfaces of the first rotating rod 412 and the second rotating rod 413 are respectively and coaxially and fixedly connected with a first cam 419 and a second cam 4110, and the first cam 419 rotates 180 ° around a circle center to obtain the second cam 4110.

Referring to fig. 3, a first worm wheel 414 is coaxially and fixedly connected to the lower end of the first rotating rod 412, a second worm wheel 415 is coaxially and fixedly connected to the lower end of the second rotating rod 413, a first worm 416 and a second worm 417 are rotatably connected to the upper end surface of the second supporting plate 411, the first worm 416 is meshed with the first worm wheel 414, the second worm 417 is meshed with the second worm wheel 415, the first worm 416 is coaxially and fixedly connected with the second worm 417, the spiral directions of the first worm 416 and the second worm 417 are opposite, a driving motor 418 is fixedly connected to the upper end surface of the second supporting plate 411, and the driving motor 418 is coaxially and fixedly connected with the first worm 416.

The driving motor 418 is started to drive the first worm 416 and the second worm 417 to rotate, at this time, the first worm wheel 414 and the second worm wheel 415 are driven by the first worm 416 and the second worm 417 to rotate respectively, so as to drive the first rotating rod 412 and the second rotating rod 413 to rotate, and because the first worm 416 and the second worm 417 have opposite spiral lines and the second cam 4110 rotates 180 ° relative to the first cam 419, the second cam 4110 rotates in an opposite direction to the first cam 419; after the first cam 419 pushes one end of the supporting frame 200 to rotate in the cotton spraying machine direction, the supporting frame 200 is reset under the action of the spring, and at the moment, the second cam 4110 rotates to push the other end of the supporting frame 200 to rotate in the cotton spraying machine direction, so that the supporting frame 200 is rotated, and the clamping mechanism 300 and the pillow core sleeve are driven to rotate.

Referring to fig. 3, two third support plates 430 are fixedly connected to the upper end surface of the second support plate 411, and the first worm 416 and the second worm 417 are rotatably connected to the inside of the third support plates 430.

The implementation manner of the embodiment is as follows: the width side of the pillow core sleeve is clamped on the first connecting rod 310 through the clamping assembly 320, the first connecting rod 310 drives the pillow core sleeve to be placed in the bearing frame 500, when the pillow core sleeve needs to be filled, the first connecting rod 310 clamping the pillow core sleeve is taken out of the bearing frame 500, the first connecting rod 310 drives the pillow core sleeve to slide on the upper end of the support frame 200 towards the cotton spraying machine, the spraying head slides into the pillow core sleeve, the first connecting rod 310 continues to slide, and when the pillow core sleeve reaches the groove 210, the first connecting rod 310 is clamped in the groove 210.

The driving motor 418 is started to drive the first worm 416 and the second worm 417 to rotate, at this time, the first worm wheel 414 and the second worm wheel 415 are driven by the first worm 416 and the second worm 417 to rotate respectively, so as to drive the first rotating rod 412 and the second rotating rod 413 to rotate, and because the spiral lines of the first worm 416 and the second worm 417 are opposite and the second cam rotates 180 degrees relative to the first cam, the rotation direction of the second cam is opposite to that of the first cam; after the first cam pushes one end of the supporting frame 200 to rotate in the cotton spraying machine direction, the supporting frame 200 is reset under the action of the spring, and at the moment, the second cam rotates to push the other end of the supporting frame 200 to rotate in the cotton spraying machine direction, so that the supporting frame 200 rotates, and the clamping mechanism 300 and the pillow case are driven to rotate.

After the filling, the first connecting rod 310 is taken out of the groove 210 and slid to the upper end surface of the guide frame 600. The above operation is repeated with a new pillow case.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a fill cotton machine material collecting device which characterized in that: including fixed connection in subaerial supporting seat (100), supporting seat (100) up end rotates and is connected with support frame (200), it has fixture (300) to support the up end joint, supporting seat (100) deviate from cotton machine one side and are provided with drive support frame (200) pivoted reciprocating mechanism (400), supporting seat (100) bear frame (500) with the parallel one side fixedly connected with of ejection of compact direction, supporting seat (100) are kept away from and are born fixedly connected with guide frame (600) in one side of frame (500), reciprocating mechanism (400) are including drive support frame (200) pivoted drive assembly (410) and drive support frame (200) reset assembly (420) that resets.

2. The cotton-filling machine material collecting device of claim 1, characterized in that: fixedly connected with bracing piece (110) on supporting seat (100), supporting seat (100) rotate to be connected on bracing piece (110), bracing piece (110) axis is in same vertical face with the cotton outlet axis.

3. The cotton-filling machine material collecting device of claim 2, characterized in that: reset assembly (420) include vertical fixed connection in subaerial first backup pad (421), first backup pad (421) are towards two elastic component (422) of support frame (200) one side fixedly connected with, two elastic component (422) are located bracing piece (110) both sides respectively, elastic component (422) are the spring, spring one end fixed connection is in support frame (200) towards first backup pad (421) one side, spring other end fixed connection is in first backup pad (421) towards support frame (200) one side.

4. The cotton-filling machine material collecting device of claim 3, characterized in that: drive assembly (410) include second backup pad (411) of fixed connection in first backup pad (421) orientation supporting seat (100) one side, the vertical rotation of second backup pad (411) up end is connected with first dwang (412) and second dwang (413), first dwang (412) and second dwang (413) up end coaxial fixedly connected with first cam (419) and second cam (4110) respectively, first cam (419) use the centre of a circle to rotate 180 as the axle center and obtain second cam (4110), first cam (419) and second cam (4110) rotation opposite direction, second backup pad (411) up end fixedly connected with driving motor (418), driving motor (418) drive first dwang (412) and second dwang (413) rotate simultaneously.

5. The cotton-filling machine material collecting device of claim 4, characterized in that: the coaxial fixedly connected with first worm wheel (414) of first dwang (412) lower extreme, the coaxial fixedly connected with second worm wheel (415) of second dwang (413) lower extreme, second backup pad (411) up end rotates and is connected with first worm (416) and second worm (417), first worm (416) and first worm wheel (414) meshing, second worm (417) and second worm wheel (415) meshing, first worm (416) and the coaxial fixedly connected of second worm (417), first worm (416) and second worm (417) helix direction are opposite, driving motor (418) and the coaxial fixedly connected of first worm (416).

6. The cotton-filling machine material collecting device of claim 5, characterized in that: the clamping mechanism (300) comprises a first connecting rod (310) clamped in the supporting frame (200), and two groups of clamping components (320) for clamping the pillow core sleeve are arranged on the upper end face of the first connecting rod (310).

7. The cotton-filling machine material collecting device of claim 6, characterized in that: centre gripping subassembly (320) include second connecting rod (321) of fixed connection in head rod (310) up end, coaxial rotation is connected with torsional spring (322) on second connecting rod (321), it has two connecting plates (323) to articulate on second connecting rod (321), torsional spring (322) both ends point is contradicted respectively in two connecting plates (323), torsional spring (322) are contradicted and are located same one side of second connecting rod (321) in connecting plate (323) towards another connecting plate (323) one side and torsional spring (322) both ends point.

8. The cotton-filling machine material collecting device of claim 7, characterized in that: the bearing frame (500) is located on one side, close to a worker, of the support frame (200), a first sliding groove (510) is vertically formed in the bearing frame (500), the first connecting rod (310) is connected into the first sliding groove (510) in a sliding mode, second sliding grooves (520) are formed in two side walls of the first sliding groove (510), and two ends of the first connecting rod (310) are connected into the second sliding grooves (520) in a sliding mode.

9. The cotton-filling machine material collecting device of claim 8, characterized in that: the horizontal opening of the upper end face of the material guide frame (600) is provided with a third sliding groove (610), the direction of the third sliding groove (610) is perpendicular to the discharging direction, and the first connecting rod (310) is connected in the third sliding groove (610) in a sliding mode.