CN216704839U - Surface spraying equipment for paper pulp molded product - Google Patents

Abstract

The utility model relates to a surface spraying device for a paper pulp molding product, which comprises a spraying area, a dust removing area, a drying area and an aerosol control area, the spraying area comprises fixed-point spraying and comprehensive spraying, the dust removal area is arranged on the front side and the rear side of the spraying area, the drying area is arranged on the rear side of the dust removal area, the spraying line crawler and the drying line crawler drive a product to be sprayed through the spraying area and then convey the product to the drying area for drying, so that the product reaches a preset drying temperature, the problem that the product needs to be fixed by a specific clamping jig when the metal piece is sprayed is solved, and usually A, B two plates are arranged, one plate is ready to be loaded, the other plate is sprayed, the jig of each plate can rotate around the shaft to ensure that the spraying of each surface of the product is even, and the spraying environment usually adopts a water curtain washing type paint spraying cabinet, and the spray paint needs to be manually taken down and then sent to be dried after the spraying is finished, so that the spray paint is not suitable for the spraying of the paper pulp molding products.

Description

Surface spraying equipment for paper pulp molded product

Technical Field

The utility model relates to the field of surface optimization processes of paper-plastic products, in particular to surface spraying equipment for a paper pulp molding product.

Background

In recent years, with the release of plastic-limited commands and the prevalence of green and environment-friendly packaging, the development of the packaging industry is increasingly advancing towards paper packaging, and pulp molded packaging products are recently widely applied to packaging of various large products due to the characteristics of wide raw material sources, environmental protection, easy degradation, good mechanical properties such as strength and plasticity and the like. However, the problems of fluffing, chipping and the like easily occur on the surface of the paper-plastic product due to inevitable movements of vibration, collision, friction and the like in the actual transportation process, and the product appearance is very influenced due to the fact that static electricity is adsorbed to the surface of the product. At present, the appearance problem is solved in the paper-plastic product forming process, the technology is not mature, and the preset effect is difficult to achieve. Therefore, the treatment of the product appearance by spraying is very important.

The spraying of metalwork needs specific clamp tool to fix the product, and sets up A, B two quotations usually, and a dish waits to feed on, and a dish carries out the spraying, and the tool of each dish can be rotatory so that each side of product spraying is even. The spraying usually adopts a spraying robot arm which is installed in a hanging way, the height, the angle, the stepping displacement, the spraying amount and the like of a spray gun can be adjusted according to the change of a product, but the volume is overlarge, the sprayed product is easy to grain, bubble, sag and the like, the purchase cost is higher, the spraying environment usually adopts a water curtain type spray booth, the spray booth is manually taken down and then sent to be dried after the spraying is finished, and the spray booth is not suitable for the spraying of pulp molding products. And a mode of placing fixed-point spraying equipment at multiple positions and multiple angles beside a working line is adopted, so that the product is sprayed in the moving process, the number of required spray heads is large, the thickness of a formed film is not constant, and the spraying method is not suitable for spraying paper-plastic products. And the spraying of the metal piece needs to firstly spray sand to remove rust, then spray primer to make the surface uniform, and finally spray finish to make the surface appearance good, the process is complicated, and a long production line is needed, and the production process flow is not suitable for spraying paper-plastic products. At present, no special spraying equipment for the pulp molding product exists in the market, and the utility model is beneficial to the development of the future packaging industry.

SUMMERY OF THE UTILITY MODEL

In order to solve the above background art, the following proposals are made: the utility model provides a paper pulp molding product surface spraying device which comprises a device box body, wherein the device box body is provided with a spraying area, a dedusting area, a drying area and an aerosol control area, the dedusting area is arranged on the front side and the rear side of the top of the spraying area, the drying area is arranged on the rear side of the dedusting area, and the aerosol control area is arranged on the lower side of the spraying area.

Preferably, a positioning baffle is fixedly arranged on the front side of the spraying area on the equipment box body, and the positioning baffle is used for placing a product to be sprayed.

Preferably, the aerial fog control district is including fixed point air spray controlgear and comprehensive air spray controlgear, fixed point air spray controlgear all includes air pressure adjusting device with comprehensive air spray controlgear, fixed point air spray controlgear and comprehensive air spray controlgear all with the air feed jar with put gluey bucket intercommunication.

Preferably, the spraying district spouts equipment and spouts equipment comprehensively including the fixed point, the fixed point is spouted equipment and is connected with fixed point air spray control equipment, it is connected with comprehensive air spray control equipment to spout equipment comprehensively, the fixed point is spouted equipment and is set up the rear side of equipment is spouted comprehensively, the fixed point is spouted equipment and is included connecting rod one, be equipped with a plurality of fixed point shower nozzles on the connecting rod one, and both ends symmetric connection has the telescopic link around connecting rod one.

Preferably, the comprehensive spraying equipment comprises a first comprehensive spraying head and a second comprehensive spraying head, the two comprehensive spraying heads are symmetrically arranged on the front side and the rear side of the comprehensive spraying equipment, the two comprehensive spraying heads are placed outwards, the two comprehensive spraying heads are symmetrically arranged on the left side and the right side of the comprehensive spraying equipment, and the two comprehensive spraying heads are placed inwards.

Preferably, the two overall spray heads I and the two overall spray heads II are respectively provided with an opening, a knob I and a knob II, the openings are used for air inlet and glue inlet, the knob I is used for controlling the size of an opening valve of the overall spray heads, and the knob II is used for controlling the atomization breadth of the overall spray heads.

Preferably, the drying area comprises an oven, a baking lamp, a fan and a temperature sensor, the baking lamp and the fan are arranged at the top in the oven, the temperature sensor is arranged on the side wall of the oven and horizontally arranged, a smoke collector is arranged in the dust removing area and is connected with the oil smoke processor through a drainage pipeline.

Preferably, the equipment in aerial fog control area and spraying area is connected with control panel.

Preferably, the positioning baffle is equipped with power component, power component includes the operation chamber, the operation chamber sets up the inside at the positioning baffle, and both sides are rotated around the middle part in operation chamber and are equipped with a screw thread section of thick bamboo, a screw thread section of thick bamboo and two fixed connection of bevel gear, with threaded rod threaded connection, two left sides meshing of bevel gear have bevel gear one, bevel gear two and axis of rotation fixed connection, the axis of rotation fixedly connected with band pulley of both sides around, and the band pulley of both sides passes through the belt and connects around, the axis of rotation of front side runs through the side and the operation piece fixed connection in operation chamber, the threaded rod runs through-hole and connecting block fixed connection in operation chamber upper end.

Preferably, positioning baffle upper end middle part is equipped with the loading board, bilateral symmetry is equipped with the direction subassembly around positioning baffle's the upper end, the direction subassembly includes two guide bars, and two guide bar symmetries set up the left and right sides at positioning baffle, the middle part and the two rotations of connecting rod of guide bar are connected, the left and right sides connecting rod two respectively with the left and right sides of connecting block is rotated and is connected, positioning baffle's one end is kept away from to the guide bar and the guide holder rotates to be connected, and is equipped with the spring between guide holder and the guide bar, the guide holder rotates with the guide bar and is connected.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a front view of a surface spraying apparatus for a pulp molded product according to the present invention;

FIG. 2 is a schematic view of a structure of a general spraying head of a surface spraying apparatus for pulp molded products in the utility model;

FIG. 3 is a front view of a full-face nozzle I of a surface coating apparatus for a pulp molded product according to the present invention;

FIG. 4 is a front view of a second overall spray head of the surface spraying apparatus for pulp molded products in accordance with the present invention;

FIG. 5 is a partial perspective view showing a spot spray section of a surface spray apparatus for a pulp molded product according to the present invention;

FIG. 6 is a bottom view of a drying line of a surface spraying apparatus for a pulp molded product according to the present invention;

FIG. 7 is a side view of the attachment structure of the positioning baffle of the present invention;

FIG. 8 is a side view of the adjustable positioning baffle of the present invention.

In the figure: 1. an equipment box body; 2. placing a glue barrel; 3. an air supply tank; 4. positioning a baffle plate; 401. an operating chamber; 402. A first bevel gear; 403. a rotating shaft; 404. a pulley; 405. an operation block; 406. a carrier plate; 407. a threaded barrel; 408. a threaded rod; 409. connecting blocks; 410. a second connecting rod; 411. a guide bar; 412. a second bevel gear; 413. a guide seat; 414. a guide wheel; 415. a spring; 5. spraying equipment comprehensively; 51. a first knob; 52. a second knob; 53. opening a hole; 54. a first overall spray head; 55. a second overall spray head; 6. a fume treatment machine; 7. a dust removal area; 8. fixed-point spraying equipment; 81. a fixed-point spray head; 82. a first connecting rod; 83. a telescopic rod; 9. a fixed point air spray control system; 10. a comprehensive air spray control system; 12. a control panel; 13. a drying zone; 14. an oven; 15. a fan; 16. baking a lamp; 17. a temperature sensing meter.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example 1

As shown in fig. 1, the utility model provides a pulp molded product surface spraying device, which comprises a device box 1, wherein the device box 1 is provided with a spraying area 11, a dust removing area 7, a drying area 13 and an aerosol control area, the dust removing area 7 is arranged at the front side and the rear side of the top of the spraying area 11, the drying area 13 is arranged at the rear side of the dust removing area 7, and the aerosol control area is arranged at the lower side of the spraying area 11;

the equipment box body 1 is movably provided with a positioning baffle 4 along the front-back direction, and the positioning baffle 4 is used for placing a product to be sprayed.

The beneficial effects of the above technical scheme are:

the spraying area 11 can be used for spraying the products to be sprayed in a fixed-point spraying and comprehensive spraying mode, the products to be sprayed are placed at the position of the positioning baffle 4, the positioning baffle 4 plays a role in positioning and guiding the products to be sprayed, the transmission speeds of the spraying line crawler belt and the drying line crawler belt are adjusted to appropriate values, the products to be sprayed are driven to pass through the spraying area 11 for spraying, then the product is conveyed to a drying area 13 for drying, so that the product reaches the preset drying temperature, the problem that the product needs to be fixed by a specific clamping jig during the spraying of the metal piece is solved, and usually A, B two plates are arranged, one plate is ready to be loaded, the other plate is sprayed, the jig of each plate can rotate around the shaft to ensure that the spraying of each surface of the product is even, however, the spraying environment of the spray paint is usually a water curtain washing type spray paint cabinet, and the spray paint needs to be manually taken down and then sent to be dried after the spraying is finished, so that the spray paint is not suitable for the spraying of the pulp molding products.

Example 2

On the basis of the embodiment 1, as shown in fig. 1-4, the aerosol control area comprises a fixed point aerosol control device 9 and a comprehensive aerosol control device 10, the fixed point aerosol control device 9 and the comprehensive aerosol control device 10 both comprise air pressure adjusting devices, the fixed point aerosol control device 9 and the comprehensive aerosol control device 10 are both communicated with the air supply tank 3 and the glue placing barrel 2, and the air pressure adjusting devices of the fixed point aerosol control device 9 and the comprehensive aerosol control device 10 can be gas pressure reducing valves with the model of QTY-20;

the spraying area 11 comprises a fixed-point spraying device 8 and a comprehensive spraying device 5, the fixed-point spraying device 8 is connected with a fixed-point air spray control device 9, the comprehensive spraying device 5 is connected with a comprehensive air spray control device 10, the fixed-point spraying device 8 is arranged on the rear side of the comprehensive spraying device 5, the fixed-point spraying device 8 comprises a connecting rod I82, a plurality of fixed-point spray heads 81 are arranged on the connecting rod I82, and the front end and the rear end of the connecting rod I82 are symmetrically connected with telescopic rods 83;

the comprehensive spraying equipment 5 comprises two comprehensive spraying heads I54 and two comprehensive spraying heads II 55, the two comprehensive spraying heads I54 are symmetrically arranged on the front side and the rear side of the comprehensive spraying equipment 5, the two comprehensive spraying heads I54 are arranged outwards, the two comprehensive spraying heads II 55 are symmetrically arranged on the left side and the right side of the comprehensive spraying equipment 5, and the two comprehensive spraying heads II 55 are arranged inwards;

the two overall spray heads 54 and the two overall spray heads 55 are respectively provided with an opening 53, a knob 51 and a knob 52, the opening 53 is used for air inlet and glue inlet, the knob 51 is used for controlling the valve opening size of the overall spray heads, and the knob 52 is used for controlling the atomization breadth of the overall spray heads.

The beneficial effects of the above technical scheme are:

the air supply tank 3 is used for supplying high-pressure air to an aerosol control area, when the control panel 12 selects full spraying, the high-pressure air enters the full-scale air spray control device 10 through a main air inlet, the air is conveyed by a pipeline in a distributor in the full-scale air spray control device 10 according to the amount, an air pressure adjusting device of the full-scale air spray control device 10 is used for controlling the air pressure of an atomizing pipeline communicated with the open hole 53 and the air pressure of a valve opening pipeline, the distributor is also connected with a glue path air pressure controller, the glue path air pressure controller adjusts the air pressure of the pipeline connected with the glue placing barrel 2, and glue to be sprayed is pressed into the open hole 53 by utilizing the air pressure; when the control panel 12 selects fixed-point spraying, the high-pressure gas enters the fixed-point air spray control device 9 through the main air inlet, an air pressure adjusting device in the fixed-point air spray control device 9 is used for adjusting the liquid path air pressure, the valve opening air pressure and the atomization air pressure of one fixed-point nozzle 81, the adjusted high-pressure gas is respectively output to the fixed-point nozzles 81 through pipelines, and the air pressure of an atomization pipeline and the pressure of the valve opening pipeline are controlled by controlling the opening of a cutoff port in a gas pressure reducing valve;

referring to fig. 3, the nozzles of the front left overall nozzle first 54 face the front direction, the nozzles of the rear overall nozzle first 54 face the rear direction, referring to fig. 4, the nozzles of the left overall nozzle second 55 face the right direction, and the nozzles of the right overall nozzle second 55 face the left direction;

if the product is sprayed at a fixed point, the telescopic rod 83 descends to enable the fixed point spraying equipment 8 to move downwards to a proper spraying height, the comprehensive spraying equipment 5 returns to a limit breadth position which does not influence the fixed point spraying effect, when the comprehensive spraying is carried out, the telescopic rod 83 ascends to an upper limit position which does not interfere the comprehensive spraying, two comprehensive spraying heads I54 are placed outwards to avoid interference of the two spraying breadth, a knob II 52 is used for controlling the atomization breadth of the comprehensive spraying heads, the utility model patent CN 201410482852-a nozzle with adjustable spraying area is referred to, a plurality of baffle plates are arranged at the nozzle opening of the comprehensive spraying heads, an inner adjusting piece is arranged inside the comprehensive spraying heads, force which enables the baffle plates to rotate inwards is exerted by the inner wall of the inner adjusting piece and the outer walls of the baffle plates in a propping manner, outer threads matched with inner threads of the inner wall of the knob II 52 are arranged on the outer wall of the inner adjusting piece, the inner adjusting piece is driven to move by rotating the outer adjusting piece, the inner adjusting piece drives the baffle plate to rotate inwards or outwards, so that the atomization breadth of the overall spray head is changed.

Example 3

On the basis of embodiment 1, as shown in fig. 5, the drying region 13 includes an oven 14, a baking lamp 15, a fan 16, and a temperature sensor 17, the baking lamp 15 and the fan 16 are disposed at the top of the oven 14, the temperature sensor 17 is disposed on a side wall of the oven 14, the temperature sensor 17 is disposed horizontally, a smoke collector is disposed inside the dust removing region 7, the smoke collector is connected to the soot processor 6 through a drainage pipe, the smoke collector includes a collection cover and a vacuum pump, and the soot processor 6 can select a JH-a32 model electrostatic soot processor;

the equipment of the aerial fog control area and the spraying area 11 is connected with a control panel 12.

The beneficial effects of the above technical scheme are:

open fan 15 and oven roast lamp 16, make the product after the spraying reach the stoving and predetermine the temperature, collect the flue gas in the operational environment by collecting cover and vacuum pump, carry out high-pressure electrostatic precipitator via drainage tube feeding oil smoke processor 6, the inside spraying effect in spraying district has effectively been improved, control panel 12 is arranged in the switching of spraying line and each shower nozzle in the control spraying district, the operator accomplishes the spraying of waiting to spray the product through operation control panel 12, control panel 12 is the control panel of electrical control box, electrical control box is connected with sensor module and drive assembly electricity, sensor module and drive assembly are connected with the equipment electricity in aerial fog control district and spraying district 11.

Example 4

On the basis of embodiment 1, as shown in fig. 6, the positioning baffle 4 is provided with a power assembly, the power assembly includes an operation cavity 401, the operation cavity 401 is disposed inside the positioning baffle 4, and front and rear sides of the middle portion of the operation cavity 401 are rotatably provided with threaded cylinders 407, the threaded cylinders 407 are fixedly connected with a bevel gear ii 412 and are in threaded connection with a threaded rod 408, the left side of the bevel gear ii 412 is engaged with a bevel gear ii 402, the bevel gear ii 412 is fixedly connected with a rotating shaft 403, the rotating shafts 403 on the front and rear sides are fixedly connected with belt pulleys 404, the belt pulleys 404 on the front and rear sides are connected through a belt, the rotating shaft 403 on the front side penetrates through the side end of the operation cavity 401 and is fixedly connected with an operation block 405, and the threaded rod 408 penetrates through a through hole in the upper end of the operation cavity 401 and is fixedly connected with a connection block 409;

locating baffle 4 upper end middle part is equipped with loading board 406, bilateral symmetry is equipped with the direction subassembly around locating baffle 4's the upper end, the direction subassembly includes two guide bars 411, and two guide bars 411 symmetries set up the left and right sides at locating baffle 4, the middle part and the two 410 rotations of connecting rod of guide bar 411 are connected, the left and right sides connecting rod two 410 respectively with the left and right sides of connecting block 409 rotates to be connected, the one end that locating baffle 4 was kept away from to guide bar 411 rotates with guide holder 413 to be connected, and is equipped with spring 415 between guide holder 413 and the guide bar 411, guide holder 413 rotates with leading wheel 414 to be connected.

The beneficial effects of the above technical scheme are:

when a product to be sprayed is installed on the positioning baffle 4, the operation block 405 is rotated to drive the rotating shaft 403 to rotate, the rotating shaft 403 drives the first bevel gear 402 to rotate, the first bevel gear 402 drives the second bevel gear 412 to rotate, the second bevel gear 412 drives the threaded barrel 407 to rotate, so that the threaded rod 408 moves downwards, the threaded rod 408 drives the connecting block 409 to move downwards, the connecting rod two 410 is driven to rotate, the connecting rod two 410 drives the guide rod 411 to rotate in a direction close to each other, the guide rod 411 drives the guide seat 413 to rotate, the guide seat 413 can be continuously rotated after being contacted with the product to be sprayed through the arrangement of the spring 415, so that the guide seat 413 is kept horizontal in the front-back direction, the direction of the guide wheel 414 is adjusted to be horizontal, the guide wheel 414 plays a role in guiding the product to be sprayed, and the product to be sprayed is kept smooth when moving in the spraying area 1 in the front-back direction, the product to be sprayed placed on the bearing plate 406 is positioned and guided, the bearing plate 406 is a cushion pad, the stability of the product to be sprayed in the moving process can be improved, and the width of the bearing plate 406 is smaller than that of the product to be sprayed.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A pulp molding product surface spraying equipment is characterized in that: including equipment box (1), equipment box (1) is equipped with spraying area (11), dust removal district (7), drying area (13) and aerial fog control district, dust removal district (7) set up both sides around the top of spraying area (11), drying area (13) set up the rear side at dust removal district (7), aerial fog control district sets up the downside at spraying area (11).

2. A pulp moulded product surface coating apparatus according to claim 1, characterised in that a positioning baffle (4) is fixedly arranged on the apparatus case (1) at the front side of the coating area (11), and the positioning baffle (4) is used for placing the product to be coated.

3. The pulp molded product surface coating device according to claim 1, wherein the aerosol control area comprises a fixed point air spray control device (9) and a comprehensive air spray control device (10), the fixed point air spray control device (9) and the comprehensive air spray control device (10) both comprise an air pressure adjusting device, and the fixed point air spray control device (9) and the comprehensive air spray control device (10) both communicate with the air supply tank (3) and the glue placing barrel (2).

4. A pulp molded product surface coating apparatus according to claim 3,

spraying district (11) spout equipment (8) and spout equipment (5) comprehensively including the fixed point, the fixed point is spouted equipment (8) and is connected with fixed point jet fog controlgear (9), it is connected with comprehensive jet fog controlgear (10) to spout equipment (5) comprehensively, the fixed point is spouted equipment (8) and is set up the rear side of spouting equipment (5) comprehensively, the fixed point is spouted equipment (8) and is included connecting rod (82), be equipped with a plurality of fixed point shower nozzles (81) on connecting rod (82), and both ends symmetric connection has telescopic link (83) around connecting rod (82).

5. The pulp molded product surface coating device according to claim 4, wherein the overall spray device (5) comprises two overall spray heads one (54) and two overall spray heads two (55), the two overall spray heads one (54) are symmetrically arranged at the front side and the rear side of the overall spray device (5), the two overall spray heads one (54) are arranged outwards, the two overall spray heads two (55) are symmetrically arranged at the left side and the right side of the overall spray device (5), and the two overall spray heads two (55) are arranged inwards.

6. The pulp molding product surface spraying device according to claim 5, characterized in that the two overall spray heads I (54) and the two overall spray heads II (55) are respectively provided with an opening (53), a knob I (51) and a knob II (52), wherein the opening (53) is used for air inlet and glue inlet, the knob I (51) is used for controlling the opening size of the overall spray heads, and the knob II (52) is used for controlling the atomization breadth of the overall spray heads.

7. The pulp molding product surface spraying device according to claim 1, characterized in that the drying area (13) comprises an oven (14), a baking lamp (15), a fan (16) and a temperature sensor (17), the baking lamp (15) and the fan (16) are arranged at the top in the oven (14), the temperature sensor (17) is arranged on the side wall of the oven (14), the temperature sensor (17) is horizontally arranged, and a smoke collector is arranged in the dust removing area (7) and connected with the smoke processor (6) through a drainage pipeline.

8. A pulp moulding surface coating apparatus according to claim 1, characterized in that the control panel (12) is connected to the apparatus of the aerosol control zone and the coating zone (11).

9. The pulp molded product surface spraying equipment as recited in claim 2, wherein the positioning baffle (4) is provided with a power assembly, the power assembly comprises an operation cavity (401), the operation cavity (401) is arranged inside the positioning baffle (4), the front side and the back side of the middle part of the operation cavity (401) are rotatably provided with a threaded cylinder (407), the threaded cylinder (407) is fixedly connected with a second bevel gear (412) and is in threaded connection with a threaded rod (408), the left side of the second bevel gear (412) is engaged with a first bevel gear (402), the second bevel gear (412) is fixedly connected with a rotating shaft (403), the rotating shafts (403) on the front side and the back side are fixedly connected with belt wheels (404), the belt wheels (404) on the front side and the back side are connected through a belt, the rotating shaft (403) on the front side penetrates through the side end of the operation cavity (401) and is fixedly connected with an operation block (405), the threaded rod (408) penetrates through a through hole in the upper end of the operation cavity (401) and is fixedly connected with the connecting block (409).

10. The pulp molded product surface coating apparatus according to claim 9, a bearing plate (406) is arranged in the middle of the upper end of the positioning baffle plate (4), guide assemblies are symmetrically arranged on the front side and the rear side of the upper end of the positioning baffle plate (4), each guide assembly comprises two guide rods (411), and the two guide rods (411) are symmetrically arranged at the left side and the right side of the positioning baffle plate (4), the middle part of the guide rod (411) is rotationally connected with a second connecting rod (410), the second connecting rods (410) on the left side and the right side are respectively rotationally connected with the left side and the right side of the connecting block (409), one end of the guide rod (411) far away from the positioning baffle (4) is rotatably connected with the guide seat (413), and a spring (415) is arranged between the guide seat (413) and the guide rod (411), and the guide seat (413) is rotatably connected with the guide wheel (414).

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