CN112278803A

CN112278803A - Finished product stacking device for handkerchief paper machine

Info

Publication number: CN112278803A
Application number: CN202011245086.6A
Authority: CN
Inventors: 袁微; 袁付华
Original assignee: Changde Changling Machinery Manufacturing Technology Co ltd
Current assignee: Changde Changling Machinery Manufacturing Technology Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-01-29
Anticipated expiration: 2040-11-10
Also published as: CN112278803B

Abstract

The invention relates to the technical field of handkerchief paper production, in particular to a finished product stacking device for a handkerchief paper machine. According to the handkerchief box stacking device, the transport box, the storage plate, the enclosing rod, the electric sliding rail, the electric sliding block, the infrared sensor and the transmission belt are arranged, so that the handkerchief box stacked by the handkerchief box stacking device is stacked by the transmission belt, the stacked handkerchief box is pushed by the electric sliding rail and the electric sliding block, the handkerchief box stacking is achieved, the workload and the working difficulty of workers are reduced, the workers can be more efficient in production, the handkerchief box stacking device does not need to pay attention to too many workers, the handkerchief box stacking device is simple to operate, the handkerchief box stacking device can be used by one person for multiple machines, and the handkerchief box stacking device is more convenient for the workers to use.

Description

Finished product stacking device for handkerchief paper machine

Technical Field

The invention relates to the technical field of handkerchief paper production, in particular to a finished product stacking device for a handkerchief paper machine.

Background

The toilet paper is extremely thin and soft paper and is used for cleaning people after the people go to a toilet. The shape of which is a single sheet of square or rolled into a roll. Toilet paper is usually made from wood pulp, which is much as common paper, but is extremely thin and fragile. The handkerchief paper is one of the branches, and is a daily necessity loved by teenagers due to the small appearance, convenient carrying and water absorption, and is more beautiful and elegant.

Along with the improvement of living standard of people, the requirements of people on living goods are more and more, and the handkerchief paper is the evolution product of the winding drum fingers and the handkerchief, and meets the elegant requirements of people in some occasions. Domestic handkerchief paper manufacture factory also has a lot, and most handkerchief paper all can leave in the warehouse after the production and reduce area, but at present part mill still collect the carton through the manual work when carrying out handkerchief paper stacking, and not only work efficiency is not high like this, and has occupied too much manpower resources, consequently needs design a handkerchief paper machine finished product stacking device.

Disclosure of Invention

The invention aims to provide a finished product stacking device for a handkerchief paper machine, which is used for solving the problems that the work efficiency is not high and too much manpower resources are occupied because paper boxes are collected manually when handkerchief paper stacking is carried out in part of factories in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a finished product stacking device for a handkerchief paper machine comprises a device body, wherein the device body comprises a transport box, one side of the transport box is provided with a transport bin, the back surface of the transport box is embedded with an observation window, the inner wall of the transport bin is embedded with an infrared sensor, one end of the transport box is provided with a blanking port, one end of the transport box is fixedly provided with a conveying sleeve, one ends of the transport box on the two sides of the conveying sleeve are embedded with electric slide rails, one ends of the two electric slide rails are movably provided with electric slide blocks, one ends of the two electric slide blocks are fixedly provided with first push rods, the inner surfaces of the two first push rods are uniformly provided with second push rods, one end of the conveying sleeve is provided with a transmission bin, the inner wall of the transmission bin is sleeved with two rotating shafts, and the two rotating shafts are sleeved with transmission belts, the surface of the transmission belt is uniformly provided with separating strips, one surface of the transmission sleeve is fixedly provided with two mounting frames, the number of the mounting frames is two, the inner sides of the two mounting frames are fixedly provided with motors, the output ends of the motors are connected to the left rotating shaft, the bottom end of the inner wall of the transportation bin is provided with two storage mechanisms, each storage mechanism comprises slots, the number of the slots is two, the bottom end of the inner wall of the transportation bin is provided with two slots, the number of the slots is two, the transportation bin is inserted with storage plates, one end of each storage plate is fixedly provided with a support strip, the number of the support strips is two, one end of each storage plate is fixedly provided with a surrounding rod, one side of each surrounding rod is fixedly provided with a handle, the number of the handles is two, the storage plates of the two inner support strips are provided with limit grooves, and the number of the, the conveying mechanism is characterized in that guide mechanisms are arranged on two sides of the conveying sleeve, a stabilizing mechanism is arranged on the conveying box on one side of the conveying sleeve, and a cleaning mechanism is arranged on the inner wall of the transmission bin.

Preferably, one end of the storage plate is provided with two sliding grooves, and the inner walls of the two sliding grooves are evenly sleeved with lubricating sleeves through rotating shafts.

Preferably, one side fixed mounting who deposits the board has the ironbar, the adsorption tank has been seted up on the transport bin inner wall of ironbar one side, the magnet strip is installed in the inner wall embedding of adsorption tank one side.

Preferably, guiding mechanism includes the fixed strip, the fixed strip is connected and is sheathe in the conveying, the one side fixed mounting of fixed strip has the mounting bar, and the quantity of mounting bar is two, two the one side fixed mounting of mounting bar has the gib block.

Preferably, stabilizing mean includes the stabilizer bar, the stabilizer bar is connected on the transport case, the one end fixed mounting of stabilizer bar has the T-shaped piece, the both sides of T-shaped piece one end have all been cup jointed through the pivot and have been rotated the wheel, one side fixed mounting of stabilizer bar has the installation piece, one side of installation piece has been cup jointed the accessory plate through the pivot, fixed mounting has spacing card on the installation piece of accessory plate one end, the one end fixed mounting of accessory plate has the connecting wire, and the connecting wire extends two surfaces of rotating the wheel, fixed mounting has the balancing weight on the connecting wire.

Preferably, one end of the auxiliary plate is arc-shaped.

Preferably, the cleaning mechanism comprises a mounting seat, the mounting seat is connected to the inner wall of the transmission bin, a cleaning plate is arranged on one side of the mounting seat, a cleaning brush is fixedly mounted on one side of the cleaning plate, a fixing hole is formed in the conveying sleeve at one end of the mounting seat, and a collecting box is inserted into the fixing hole.

Preferably, a buffer groove is formed in one side of the mounting seat, a compression spring is fixedly mounted on the inner wall of the buffer groove, and one side of the compression spring is connected to the cleaning plate.

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

1. through being provided with the transport case, deposit the board, the rail, electronic slide rail, electronic slider, infrared inductor and driving belt, make this device utilize driving belt to stack the handkerchief carton that has packed like this, and utilize electronic slide rail and electronic slider to make the handkerchief carton that stacks pass, thereby realize putting things in good order of handkerchief carton, the work load and the work degree of difficulty of staff have been reduced, make the staff can be more high-efficient in production, and this device need not the staff and pay close attention to and easy operation too much, make the staff can alone to many machines, make this device be convenient for the staff to use more.

2. Through being provided with guiding mechanism, utilize two gibs to make handkerchief packing carton can keep in the middle when carrying like this, let the packing box can aim at the blanking mouth better, reduced the possibility that packing carton blocks, let the stability of this device better, and then let this device have hommization more to and this mechanism simple structure, the more convenient to popularize and produce.

3. Through being provided with stabilizing mean, utilize the accessory plate to come to carry out the auxiliary stay to one side of packing carton like this, avoid packing carton to take place to overturn or block because unexpected vibration when descending, further promoted the stability and the reliability of this device, and utilize the weight of balancing weight, make the accessory plate can not just take place to overturn when packing carton just contacts, and utilize spacing card to make the turned angle of accessory plate carry on spacingly, avoid the accessory plate excessively to rotate and lose effect.

Drawings

FIG. 1 is a schematic sectional elevation view of the structure of the present invention;

FIG. 2 is a schematic top view of the shipping box structure of the present invention;

FIG. 3 is a bottom view of the storage plate structure of the present invention;

FIG. 4 is a top view of the storage plate structure of the present invention;

FIG. 5 is a schematic view of the working state of the limiting groove structure of the present invention;

FIG. 6 is a side view of a second putter structure of the present invention;

FIG. 7 is a schematic top cross-sectional view of the shipping box construction of the present invention;

FIG. 8 is a schematic top view of the guide mechanism of the present invention;

FIG. 9 is a schematic sectional elevation view of the stabilizing mechanism of the present invention;

FIG. 10 is a schematic sectional front view of the cleaning mechanism of the present invention;

fig. 11 is an enlarged view of a portion of a structure shown in fig. 1 according to the present invention.

In the figure: 1. a device body; 110. a transport case; 111. a transport bin; 112. an observation window; 113. an infrared sensor; 114. a blanking port; 115. an electric slide rail; 116. an electric slider; 117. a first push rod; 118. a second push rod; 119. a transfer sleeve; 120. a transmission bin; 121. a rotating shaft; 122. a drive belt; 123. a mounting frame; 124. a motor; 125. a dividing strip; 2. a storage mechanism; 210. a slot; 211. a storage plate; 212. a supporting strip; 213. a handle; 214. a surrounding rod; 215. a limiting groove; 216. a sliding groove; 217. a lubricating sleeve; 218. iron bars; 219. an adsorption tank; 220. a magnet strip; 3. a guide mechanism; 310. a fixing strip; 311. mounting a bar; 312. a guide strip; 4. a stabilizing mechanism; 410. a stabilizing strip; 411. a T-shaped block; 412. a rotating wheel; 413. a connecting wire; 414. a balancing weight; 415. an auxiliary plate; 416. mounting blocks; 417. a limiting card; 5. a cleaning mechanism; 510. a mounting seat; 511. cleaning the plate; 512. cleaning the brush; 513. a fixing hole; 514. a collection box; 515. a buffer tank; 516. compressing the spring.

Detailed Description

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

Referring to fig. 1-11, an embodiment of the present invention:

a finished product stacking device for a handkerchief paper machine comprises a device body 1, wherein an infrared sensor 113, a motor 124, an electric slide rail 115 and an electric slide block 116 which are used in the device body 1 are all products which can be directly purchased in the market, the principle and the connection mode of the device body are the prior art which are well known by the technical personnel in the field, and therefore the description is omitted, the device body 1 comprises a transport box 110, a transport bin 111 is arranged on one side of the transport box 110, an observation window 112 is embedded in the back of the transport box 110, the infrared sensor 113 is embedded in the inner wall of the transport bin 111, a blanking port 114 is arranged at one end of the transport box 110, a transport sleeve 119 is fixedly arranged at one end of the transport box 110, the electric slide rails 115 are embedded in one end of the transport box 110 on two sides of the transport sleeve 119, the electric slide blocks 116 are movably arranged at one end of the two electric slide rails 115, the inner surfaces of the two first push rods 117 are uniformly provided with second push rods 118, one end of the conveying sleeve 119 is provided with a transmission bin 120, the inner wall of the transmission bin 120 is sleeved with two rotating shafts 121, the two rotating shafts 121 are sleeved with a driving belt 122, one surface of the conveying sleeve 119 is uniformly provided with separating strips 125, one surface of the transmission bin 119 is fixedly provided with two mounting frames 123, the number of the mounting frames 123 is two, the inner sides of the two mounting frames 123 are fixedly provided with motors 124, the output ends of the motors 124 are connected to the left rotating shaft 121, the bottom end of the inner wall of the transportation bin 111 is provided with a storage mechanism 2, the storage mechanism 2 comprises two slots 210, the number of the slots 210 is two, the bottom end of the inner wall of the transportation bin 111 is provided with slots 210, the number of the slots 210 is two, the storage plate 211 is inserted into the transportation bin 111, and one end of, and the number of the supporting bars 212 is two, one end of the storage plate 211 is fixedly provided with the surrounding bar 214, one side of the surrounding bar 214 is fixedly provided with the handle 213, the number of the handle 213 is two, the storage plate 211 on the inner side of the two supporting bars 212 is provided with the limiting groove 215, the number of the limiting groove 215 is two, two sides of the conveying sleeve 119 are both provided with the guide mechanism 3, the transport box 110 on one side of the conveying sleeve 119 is provided with the stabilizing mechanism 4, the inner wall of the transmission bin 120 is provided with the cleaning mechanism 5, so that the device stacks the packaged handkerchief cartons by using the transmission belt 122, and pushes the stacked handkerchief cartons by using the electric slide rail 115 and the electric slide block 116, thereby realizing stacking of the handkerchief cartons, reducing the workload and the working difficulty of workers, leading the workers to be more efficient in production, and the device does not need much attention of the workers and has simple operation, make the staff can alone to many machines for this device is convenient for the staff more and uses.

Furthermore, the sliding grooves 216 are formed in one end of the storage plate 211, the number of the sliding grooves 216 is two, and the lubricating sleeves 217 are evenly sleeved on the inner walls of the two sliding grooves 216 through the rotating shafts, so that the friction force between the bottom end of the packing box and one end of the storage plate 211 is smaller, and the packing box can be lubricated more when pushed by the first push rod 117 and the second push rod 118.

Further, one side fixed mounting of storing plate 211 has ironbar 218, has seted up on the transport bin 111 inner wall of ironbar 218 one side and has adsorbed groove 219, and the embedding of the inner wall one side of adsorbed groove 219 is installed magnet strip 220, utilizes the adsorption of ironbar 218 and magnet strip 220 to make storing plate 211 place more stable like this, avoids storing plate 211 because the motion of packing box and moves about.

Further, guiding mechanism 3 includes fixed strip 310, fixed strip 310 is connected on conveying cover 119, the one side fixed mounting of fixed strip 310 has mounting strip 311, and the quantity of mounting strip 311 is two, the one side fixed mounting of two mounting strips 311 has guide strip 312, utilize two guide strips 312 to make handkerchief packing carton can keep in the middlest when carrying out the transport like this, let the packing box can aim at blanking mouth 114 better, the possibility that the packing carton blocks has been reduced, let the stability of this device better, and then let this device have hommization more, and this mechanism simple structure, the more facilitate promotion production.

Further, the stabilizing mechanism 4 includes a stabilizing strip 410, the stabilizing strip 410 is connected to the transport box 110, one end of the stabilizing strip 410 is fixedly provided with a T-shaped block 411, both sides of one end of the T-shaped block 411 are sleeved with a rotating wheel 412 through a rotating shaft, one side of the stabilizing strip 410 is fixedly provided with an installation block 416, one side of the installation block 416 is sleeved with an auxiliary plate 415 through a rotating shaft, the installation block 416 at one end of the auxiliary plate 415 is fixedly provided with a limit card 417, one end of the auxiliary plate 415 is fixedly provided with a connecting wire 413, the connecting wire 413 extends through the surfaces of the two rotating wheels 412, the connecting wire 413 is fixedly provided with a counterweight 414, so that the auxiliary plate 415 is used for auxiliary support of one side of the packaging carton, the packaging carton is prevented from being overturned or clamped due to unexpected vibration when descending, the stability and reliability of the device are further improved, and the, so that the auxiliary board 415 is not turned over when the packing carton is just touched, and the limit card 417 is used to limit the rotation angle of the auxiliary board 415, thereby preventing the auxiliary board 415 from being out of action due to over-rotation.

Further, one end of the auxiliary board 415 is formed in an arc shape, so that the packing case is more easily put on the auxiliary board 415.

Further, clean mechanism 5 includes mount pad 510, mount pad 510 is connected on the inner wall of transmission bin 120, one side of mount pad 510 is equipped with cleaning plate 511, one side fixed mounting of cleaning plate 511 has cleaning brush 512, the fixed orifices 513 has been seted up on the conveying cover 119 of mount pad 510 one end, it has collection box 514 to insert in the fixed orifices 513, utilize cleaning brush 512 to clear up the surface of transmission belt 122 like this, utilize collection box 514 to collect the waste material that falls after the clearance simultaneously.

Furthermore, a buffer groove 515 is formed in one side of the mounting seat 510, a compression spring 516 is fixedly mounted on the inner wall of the buffer groove 515, and one side of the compression spring 516 is connected to the cleaning plate 511, so that the cleaning brush 512 can be attached to the transmission belt 122 more tightly by using the elastic potential energy of the compression spring 516.

The working principle is as follows: when the staff uses this device, at first remove this device to suitable position, with the driving belt 122 on this device to the packagine machine afterwards, insert storage plate 211 again in transport bin 111, keep promoting storage plate 211 for storage plate 211 moves until ironbar 218 inserts in absorption groove 219 and let ironbar 218 and magnet stone strip 220 produce and adsorb spacing.

With this device external power supply and open motor 124 through control panel afterwards, after motor 124 starts, the output of motor 124 can drive axis of rotation 121 and rotate, drives driving belt 122 promptly and rotates, can make electronic slide rail 115, electronic slider 116 and infrared inductor 113 be in the on-state behind the external power supply simultaneously.

Then the packed handkerchief carton by the packing machine falls onto the transmission belt 122, then the handkerchief carton is displaced due to the movement of the transmission belt 122, when the handkerchief carton moves to a certain position, the guide strip 312 is extruded to one end of the handkerchief carton, meanwhile, because the handkerchief carton moves all the time, the guide strip 312 guides the handkerchief carton, so that the handkerchief carton is displaced on the transmission belt 122 and keeps at the middle position on the transmission belt 122, then the handkerchief carton continues to move, finally, one side of the handkerchief carton presses down the auxiliary plate 415 and rotates along with the transmission belt 122, so that the contact area between the handkerchief carton and the auxiliary plate 415 is gradually increased, finally, the balance position of the auxiliary plate 415 and the counterweight 414 is broken, so that the auxiliary plate 415 rotates, when the auxiliary plate 415 rotates, the connecting line 413 is driven to move and the counterweight 414 is lifted, finally, the auxiliary board 415 is turned over a certain angle, the packing carton falls down and finally enters the transportation bin 111 through the blanking opening 114, and when the packing carton falls down, the weight of the side of the auxiliary board 415 becomes lighter, and the weight 414 pulls the auxiliary board 415 back to the previous position again due to the self weight.

When the handkerchief carton falls into the transportation bin 111, the handkerchief carton falls onto the storage plate 211, another handkerchief carton falls onto the first handkerchief carton after waiting for a period of time, the second handkerchief carton is located at a position close to the infrared sensor 113, the optical signal of the infrared sensor 113 is blocked, the infrared sensor 113 generates a corresponding electrical signal after being blocked for one second, the electrical signal is transmitted to the single chip microcomputer through a conducting wire, the single chip microcomputer sends the electrical signal to the two electric sliding rails 115 after processing, the two electric sliding rails 115 move after receiving the signal, even if the first push rod 117 and the second push rod 118 move, the first push rod 117 and the second push rod 118 drive the stacked handkerchief cartons to move, and then the first push rod 117 and the second push rod 118 return to the original positions, waiting for the next electrical signal.

After the infrared sensor 113 receives multiple electric signals, the worker closes the packing machine of the handkerchief paper towel when seeing that the space position on the storage plate 211 is not much through the observation window 112, the feeding is stopped, at this time, the worker inserts the fork teeth of the forklift into the insertion slots 210 and moves upwards in a small range, the clamping blocks on the fork teeth clamp the limiting slots 215, then, the storage plate 211 can be taken out and rotated to a warehouse, and finally, the new storage plate 211 is placed in, and the work can be carried out again.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a finished product stacking device for handkerchief paper machine, includes device body (1), its characterized in that: the device body (1) comprises a transport box (110), a transport bin (111) is arranged on one side of the transport box (110), an observation window (112) is installed at the back of the transport box (110) in an embedded mode, an infrared inductor (113) is installed on the inner wall of the transport bin (111) in an embedded mode, a blanking port (114) is formed in one end of the transport box (110), a conveying sleeve (119) is fixedly installed at one end of the transport box (110), electric sliding rails (115) are installed at one ends of the transport box (110) on the two sides of the conveying sleeve (119) in an embedded mode, electric sliding blocks (116) are movably installed at one ends of the two electric sliding rails (115), first push rods (117) are fixedly installed at one ends of the two electric sliding blocks (116), second push rods (118) are evenly installed on the inner faces of the two first push rods (117), and a transmission bin (120) is formed in one end, the inner wall of the transmission bin (120) is sleeved with two rotating shafts (121), the number of the rotating shafts (121) is two, two transmission belts (122) are sleeved on the rotating shafts (121), the surface of each transmission belt (122) is uniformly provided with a separation strip (125), one surface of each transmission sleeve (119) is fixedly provided with a mounting frame (123), the number of the mounting frames (123) is two, the inner sides of the two mounting frames (123) are fixedly provided with motors (124), the output ends of the motors (124) are connected onto the left rotating shaft (121), the bottom end of the inner wall of the transportation bin (111) is provided with a storage mechanism (2), the storage mechanism (2) comprises slots (210), the number of the slots (210) is two, the bottom end of the inner wall of the transportation bin (111) is provided with the slots (210), the number of the slots (210) is two, and the storage plates (211) are inserted into the transportation bin (111), the one end fixed mounting who deposits board (211) has support bar (212), and the quantity of support bar (212) is two, the one end fixed mounting who deposits board (211) has surrounding rod (214), one side fixed mounting of surrounding rod (214) has handle (213), and the quantity of handle (213) is two, two spacing groove (215) have been seted up on the board (211) of depositing of support bar (212) inner face, and the quantity of spacing groove (215) is two, the two sides of conveying cover (119) all are equipped with guiding mechanism (3), be equipped with stabilizing mean (4) on conveying case (110) of conveying cover (119) one side, be equipped with cleaning mechanism (5) on the inner wall of transmission storehouse (120).

2. The finished product stacking device for the handkerchief paper machine as claimed in claim 1, wherein: sliding grooves (216) are formed in one end of the storage plate (211), the number of the sliding grooves (216) is two, and lubricating sleeves (217) are evenly sleeved on the inner walls of the two sliding grooves (216) through rotating shafts.

3. The finished product stacking device for the handkerchief paper machine as claimed in claim 1, wherein: one side fixed mounting who deposits board (211) has ironbar (218), adsorption tank (219) have been seted up on transport bin (111) inner wall of ironbar (218) one side, magnet strip (220) are installed in the inner wall embedding of adsorption tank (219) one side.

4. The finished product stacking device for the handkerchief paper machine as claimed in claim 1, wherein: guiding mechanism (3) are including fixed strip (310), fixed strip (310) are connected on conveying cover (119), one side fixed mounting of fixed strip (310) has mounting bar (311), and the quantity of mounting bar (311) is two, two one side fixed mounting of mounting bar (311) has guide bar (312).

5. The finished product stacking device for the handkerchief paper machine as claimed in claim 1, wherein: stabilizing mean (4) includes stabilizer bar (410), stabilizer bar (410) are connected on transport case (110), the one end fixed mounting of stabilizer bar (410) has T-shaped piece (411), the both sides of T-shaped piece (411) one end have all cup jointed through the pivot and have rotated wheel (412), one side fixed mounting of stabilizer bar (410) has installation piece (416), one side of installation piece (416) has cup jointed subplate (415) through the pivot, fixed mounting has spacing card (417) on the installation piece (416) of subplate (415) one end, the one end fixed mounting of subplate (415) has connecting wire (413), and connecting wire (413) extend through two surfaces of rotating wheel (412), fixed mounting has balancing weight (414) on connecting wire (413).

6. The finished product stacking device for the handkerchief paper machine as claimed in claim 5, wherein: one end of the auxiliary plate (415) is arc-shaped.

7. The finished product stacking device for the handkerchief paper machine as claimed in claim 1, wherein: clean mechanism (5) are including mount pad (510), mount pad (510) are connected on the inner wall of transmission storehouse (120), one side of mount pad (510) is equipped with cleaning plate (511), one side fixed mounting of cleaning plate (511) has clean brush (512), fixed orifices (513) have been seted up on transport sleeve (119) of mount pad (510) one end, it collects box (514) to insert in fixed orifices (513).

8. The finished product stacking device for the handkerchief paper machine as claimed in claim 7, wherein: buffer slot (515) have been seted up to one side of mount pad (510), fixed mounting has compression spring (516) on the inner wall of buffer slot (515), and one side of compression spring (516) is connected on cleaning plate (511).