CN216988192U

CN216988192U - Bottle base surface spraying device

Info

Publication number: CN216988192U
Application number: CN202120767801.6U
Authority: CN
Inventors: 简胜利; 佘明阳; 林勇波
Original assignee: Guangzhou Huayan Precision Machinery Co ltd
Current assignee: Guangzhou Huayan Precision Machinery Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2022-07-19
Anticipated expiration: 2031-04-14

Abstract

The utility model discloses a bottle blank outer surface spraying device, which comprises: spraying mechanism, spraying mechanism includes: the spray gun mounting frame comprises a spray gun, a spray gun mounting plate and a spray gun mounting frame; the spray gun mounting frames are fixed on the spray gun mounting plates, the spray guns are connected on the spray gun mounting frames, and the spray guns are simultaneously connected with an access gate valve control air pipe, an atomization air pipe and an anti-wear coating liquid access pipe; a plurality of spray guns are uniformly arranged on the periphery of each PET bottle blank; the atomized liquid recovery mechanism comprises a vacuum generator, a recovery box body, a filter element and a liquid storage cylinder; the vacuum generator is connected with an air inlet pipe and an air outlet pipe, the recovery box body is arranged above the vacuum generator, the recovery box body is provided with a bottom opening, and the filter element is fixed at the bottom opening; the liquid storage cylinder is arranged right below the bottom opening of the recovery box body; and the spraying mechanism is arranged above the atomized liquid recovery mechanism. The utility model has high practicability for users who need to protect the outer surface of the bottle blank against abrasion.

Description

Bottle base surface spraying device

Technical Field

The utility model relates to the field of surface treatment, in particular to a bottle blank outer surface spraying device.

Background

PET is a material with good thermal stability. Compared with other polymer materials, PET is widely applied to packaging of cosmetics, medicines, beverages, mineral water, daily necessities, reagents and the like. With the increasing demand of the market, the development of the injection molding system is faster and faster, and the requirement on the injection molding system is increased day by day. In terms of production quantity, due to the technical limit of the existing mold, the difference of cavity modulus of each large manufacturer is very small, so that the production period is shortened, the yield is improved, and the method is the key of the market competition of the PET injection molding system.

PET has incomparable transparent property with other plastics, and in the high polymer material processing and forming industry, plastic raw materials are subjected to the processes of conveying, melting and plasticizing and extrusion forming, so that a finished product is formed. However, finished PET preforms are also more prone to surface-visible blemishes than other finished plastic preforms: when the bottle blank is not completely cooled, the bottle blank is easy to stick together, and the surface is irreversibly damaged; even after complete cooling, collision or friction between the bottle blanks inevitably occurs during the conveying process, so that the outer surface of the product has damage or damage traces of friction, which has quality defects in the appearance of dairy products and daily chemical products with high requirements on the appearance and can cause quality defects in the appearance of the product. For many bottle preform manufacturers, this apparent defect in appearance is likely to result in lost customers and adversely affect economic efficiency.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a bottle blank outer surface spraying device which can uniformly spray anti-wear coating liquid and attach the anti-wear coating liquid to the surface of a PET bottle blank, and simultaneously recover and treat atomized liquid to avoid the problem that the outer surface of the PET bottle blank is scratched and damaged.

The utility model is realized by the following technical scheme:

the utility model discloses a bottle blank outer surface spraying device, which comprises: the spraying mechanism includes: the spray gun mounting frame comprises a spray gun, a spray gun mounting plate and a spray gun mounting frame; the spray gun mounting frames are fixed on the spray gun mounting frames, the spray guns are connected on the spray gun mounting frames, and the spray guns are simultaneously connected with an access gate valve control air pipe, an atomization air pipe and an anti-wear coating liquid access pipe; PET bottle blanks are arranged on the spray gun mounting plates, and a plurality of spray guns are uniformly arranged in the peripheral direction of each PET bottle blank; the atomized liquid recovery mechanism comprises a vacuum generator, a recovery box body, a filter element and a liquid storage cylinder; the vacuum generator is connected with an air inlet pipe and an air outlet pipe, the recovery box body is arranged above the vacuum generator, and the filter element is arranged in the recovery box body; the bottom of the recovery box body is provided with a filtrate port, and the liquid storage cylinder is arranged below the filtrate port of the recovery box body; the spraying machine platform, the spraying mechanism with the atomized liquid recovery mechanism all is fixed in on the spraying machine platform, the spraying mechanism set up in the top that the atomized liquid recovered the mechanism.

Furthermore, the bottle blank outer surface spraying device also comprises a spraying driving mechanism; the spraying mechanism includes: the horizontal driving motor, the transmission rod, the transmission wheel, the transmission chain, the chain connecting seat and the first guide rail; the output end of the driving motor is connected with the transmission rod, the transmission wheel is fixedly connected to the end part of the transmission rod, the transmission chain is meshed with the transmission wheel, and the chain connecting seat is fixedly connected to the transmission chain; the chain connecting seat and the sliding block of the first guide rail are fixedly connected to the bottom of the spray gun mounting plate; the spraying mechanism further comprises: the device comprises a first guide rail mounting plate, a guide rod, a cylinder mounting plate and a telescopic cylinder; the first guide rail is fixed on the first guide rail mounting plate, the guide rod is perpendicularly connected to the bottom of the first guide rail mounting plate, the cylinder mounting plate is fixed to the bottom of the guide rod, and the telescopic cylinder is fixed on the cylinder mounting plate.

Furthermore, the spraying mechanism also comprises a spray gun adjusting block; the spray gun mounting frame is T-shaped, and the side part of the spray gun adjusting block is rotatably connected to the cross rod of the spray gun mounting frame; the spray gun is connected to the spray gun regulating block.

Furthermore, the spraying mechanism also comprises a spray gun adjusting rod; one end of the spray gun adjusting rod is connected to the bottom of the spray gun adjusting block in a sliding mode, and the other end of the spray gun adjusting rod is fixedly connected with the spray gun.

Further, the atomized liquid recovery mechanism further comprises: filtering with a screen; the filter screen sets up the filter core top is located retrieve the box.

Further, the atomized liquid recovery mechanism further comprises: a drawer body; the side part of the recovery box body is provided with an opening for the drawer body to be put in or taken out, the drawer body is inserted into the recovery box body, and the filter element is arranged on the drawer body.

Further, retrieve the box and include left box and right box, be equipped with a filter screen and filter core in left side box and the right box respectively, left side box with the below of right side box is provided with one respectively deposit the liquid section of thick bamboo, vacuum generator arranges in two deposit between the liquid section of thick bamboo.

Further, the atomized liquid recovery mechanism includes: a second guide rail; the bottom of the spraying machine platform is fixedly connected to the sliding block of the second guide rail.

Further, the bottle base surface spraying device still includes: a bottle blank transfer mechanism; the bottle blank transfer mechanism comprises a blank suction plate for sucking the bottle blank and a two-axis manipulator for driving the blank suction plate to move; the two-axis robot includes: the X-axis motor, the third guide rail, the sliding seat, the fourth guide rail, the mounting frame, the Y-axis motor and the ball screw are arranged on the base; the bottle blank outer surface spraying device further comprises a main frame, the third guide rail is horizontally arranged on the main frame, the sliding seat is fixed on a sliding block of the third guide rail, the X-axis motor is fixed on the main frame, and the X-axis motor drives the sliding seat to horizontally slide along the third guide rail through synchronous belt transmission; the fourth guide rail is vertically arranged on the mounting frame, the sliding seat is simultaneously fixed on a sliding block of the fourth guide rail, the Y-axis motor is fixed on the mounting frame, and the ball screw is in transmission connection with the Y-axis motor so as to drive the mounting frame to vertically move along the fourth guide rail; the blank suction plate is fixedly connected below the mounting frame.

Furthermore, the bottle blank outer surface spraying device also comprises a discharging belt; the blanking belt is arranged on the side part of the spraying machine table.

Compared with the prior art, the utility model can achieve the following beneficial effects:

the PET bottle blank is sprayed with the wear-resistant coating liquid through the spraying mechanism, and the bottle blank is sprayed by a plurality of spray guns in a surrounding manner, so that the effect of uniform coating is achieved; the atomized liquid recovery mechanism can recover the anti-wear coating liquid atomized liquid diffused in the air, on one hand, atomized particles are sucked away through the vacuum generator, on the other hand, the atomized liquid is filtered through the recovery box body and then recovered into the liquid storage cylinder for collection and treatment, and the recycling of the anti-wear coating liquid is realized.

This device has highly compatible characteristic, because the injection molding system generally has longer life, if adopt the mode of eliminating current injection molding system or injection mold to carry out the spraying, the economic cost who causes is comparatively high, and can prolong the cycle of equipment production, and this device can make the adjustment according to the injection molding system of difference, in other words expand a spraying special area at the injection molding system outward, this spraying special area can match current the most PET bottle base injection molding system, user's upgrading cost can be saved, can not influence the production cycle of equipment, to the user that has the demand to the protection that wear-resistants of bottle base surface, has very high practicality.

Drawings

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is an overall elevational view of the present invention;

FIG. 3 is a perspective view of the spray area;

FIG. 4 is a front view of the spray area;

FIG. 5 is a perspective view of the spray mechanism;

FIG. 6 is an exploded view of the spray mechanism;

FIG. 7 is a perspective view of the spray actuator;

FIG. 8 is a front view of the spray drive mechanism;

FIG. 9 is a perspective view of the atomized liquid recovery mechanism;

FIG. 10 is a sectional view showing the atomized liquid recovery mechanism;

FIG. 11 is an overall schematic view of the preform transfer mechanism;

FIG. 12 is a perspective view of the vertical portion of the preform transfer mechanism;

fig. 13 is a rear view of the vertical portion of the preform transfer mechanism.

In the figure: 10. a spraying mechanism; 11. a spray gun; 12. a spray gun mounting plate; 13. a spray gun mounting rack; 14. a spray gun adjusting block; 15. a spray gun adjusting rod; 20. an atomized liquid recovery mechanism; 21. a vacuum generator; 22. a recovery box body; 221. a left box body; 222. a right box body; 23. a filter element; 24. a liquid storage cylinder; 25. an air inlet pipe; 26. An air outlet pipe; 27. filtering with a screen; 28. a drawer body; 29. a second guide rail; 30. spraying a machine platform; 40. a spray driving mechanism; 41. a horizontal driving motor; 42. a transmission rod; 43. a driving wheel; 44. a drive chain; 45. A chain connecting seat; 46. a first guide rail; 47. a first guide rail mounting plate; 48. a guide bar; 49. a cylinder mounting plate; 410. a telescopic cylinder; 50. a two-axis manipulator; 51. an X-axis motor; 52. a third guide rail; 53. A sliding seat; 54. a fourth guide rail; 55. a mounting frame; 56. a Y-axis motor; 57. a ball screw; 58. a main frame; 60. a blank sucking plate; 70. feeding a material belt; 80. PET bottle blank.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

The utility model discloses a bottle blank outer surface spraying device, which is shown in figures 3-4 and comprises: a spraying mechanism 10, an atomized liquid recovery mechanism 20 and a spraying machine table 30.

Referring to fig. 5-6, among others, the spray mechanism 10 includes: a spray gun 11, a spray gun mounting plate 12 and a spray gun mounting plate 13; a plurality of spray gun mounting frames 13 are simultaneously fixed on the spray gun mounting frame 12, the spray guns 11 are connected on the spray gun mounting frames 13, and the spray guns 11 are simultaneously connected with an access gate valve control air pipe, an atomization air pipe and an anti-wear coating liquid access pipe so as to control the spray guns 11 to output atomized anti-wear coating liquid; PET bottle blanks 80 serving as workpieces are placed on the spray gun mounting plate 12, and a plurality of spray guns 11 are uniformly distributed on the periphery of each PET bottle blank 80 so as to realize comprehensive and uniform coating on the outer surface of each PET bottle blank 80. In this embodiment, each PET bottle preform 80 is sprayed by four spray guns 11 in different directions to achieve uniform effect.

Referring to fig. 9 to 10, the atomized liquid recovery mechanism 20 includes: a vacuum generator 21, a recovery box 22, a filter element 23 and a liquid storage cylinder 24; the vacuum generator 21 is used for generating negative pressure and is connected with an air inlet pipe 25 and an air outlet pipe 26; the recovery box body 22 is arranged above the vacuum generator 21, and the filter element 23 is arranged in the recovery box body 22; the bottom of the recovery box body 22 is provided with a filtrate port, and the liquid storage cylinder 24 is arranged below the filtrate port of the recovery box body 22; because the anti-wear masking liquid in the device can be emitted to the outside difficultly and further pollute the external working environment, the atomized liquid recovery mechanism 20 is arranged to collect and treat the atomized liquid. On one hand, the vacuum generator 21 generates negative pressure, and atomized particles in the air are sucked into the air inlet pipe and discharged through the air outlet pipe; on the other hand, the atomized liquid enters the filter element 23 of the recovery box body 22 and then is filtered, and the filtered liquid drops into the liquid storage cylinder 24, so that the recycling of the wear-resistant coating liquid is realized, and meanwhile, the air in the working environment is ensured not to be polluted.

The sprayer platform 30 plays a role of supporting and providing a mounting position, and the spraying mechanism 10 and the atomized liquid recovery mechanism 20 are both fixed on the sprayer platform 30, wherein the spraying mechanism 10 is arranged above the atomized liquid recovery mechanism 20.

In order to drive the spraying mechanism 10 to move and control the spray gun 11 to move back and forth to improve the effect of uniform spraying, the present invention preferably further comprises a spraying drive mechanism 40. Referring to fig. 7-8, the spray driving mechanism 40 is used to drive the spray gun 11 in a vertical direction and a horizontal direction. The horizontal driving part includes: a horizontal driving motor 41, a transmission rod 42, a transmission wheel 43, a transmission chain 44, a chain connecting seat 45 and a first guide rail 46; the output end of the driving motor is connected with the transmission rod 42, the transmission wheel 43 is fixedly connected with the end part of the transmission rod 42, the transmission chain 44 is meshed with the transmission wheel 43, and the chain connecting seat 45 is fixed on the transmission chain 44, so that the driving motor can drive the chain connecting seat 45 to horizontally move along the chain; the chain connecting seat 45 and the sliding block of the first guide rail 46 are fixedly connected to the bottom of the spray gun mounting plate 12, so that the drive motor can drive the spray gun mounting plate 12 to slide along the first guide rail 46. The vertical driving part includes: a first guide rail mounting plate 47, a guide rod 48, a cylinder mounting plate 49 and a telescopic cylinder 410; the first guide rail 46 is fixed on a first guide rail mounting plate 47, the guide rod 48 is vertically connected to the bottom of the first guide rail mounting plate 47, the cylinder mounting plate 49 is fixed at the bottom of the guide rod 48, and the telescopic cylinder 410 is fixed on the cylinder mounting plate 49; therefore, the telescopic cylinder 410 can drive the guide rod 48 to drive the first rail mounting plate 47 to move vertically, and thus drive the spray gun 11 on the spray gun mounting plate 12 to move vertically. The device finishes the uniform spraying of the PET bottle blank 80 by horizontally driving and vertically driving the spray gun 11.

Referring to fig. 4, the spraying machine 30 is a three-layer structure, which is composed of a spraying mechanism 10, a spraying driving mechanism 40 and an atomized liquid recycling mechanism 20 from top to bottom, and forms a spraying area.

Preferably, the spray mechanism 10 also includes a gun adjustment block 14. Referring to fig. 6, the spray gun mounting frame 13 is T-shaped, the side of the spray gun adjusting block 14 is rotatably connected to the cross bar of the spray gun mounting frame 13, and the spray gun 11 is connected below the spray gun adjusting block 14 to adjust the rotation angle of the spray gun 11 to adapt to PET bottle blanks 80 of different specifications.

Further preferably, the spraying mechanism 10 further comprises a gun adjusting lever 15. One end of the spray gun adjusting rod 15 is slidably connected to the bottom of the spray gun adjusting block 14, and the other end is fixedly connected to the spray gun 11 and used for adjusting the horizontal height of the spray gun 11.

Preferably, referring to fig. 9, the atomized liquid recovery mechanism 20 further includes a filter screen 27, and the filter screen 27 is disposed on the top of the filter element 23 and is located in the recovery tank 22. The filter screen 27 can realize coarse filtration, and the filtrate after coarse filtration enters the filter element 23 to further realize fine filtration.

Preferably, the atomized liquid recovery mechanism 20 further includes a drawer body 28; an opening for placing or drawing out the drawer body 28 is formed in the side part of the recovery box body 22, the drawer body 28 is inserted in the recovery box body 22, and the filter element 23 is arranged on the drawer body 28. Through the drawer type arrangement mode, be convenient for put into fast or take out filter core 23, shorten the time of changing filter core 23.

Preferably, the recycling box 22 specifically includes two parts, namely a left box 221 and a right box 222, wherein a filter screen 27 and a filter element 23 are respectively arranged in the left box 221 and the right box 222, a liquid storage cylinder 24 is respectively arranged below the left box 221 and the right box 222, and the two liquid storage cylinders 24 respectively collect the left box 221, the right box 222 and the filtrate. The vacuum generator 21 is disposed between the two liquid storage cylinders 24.

In order to facilitate pulling out the liquid storage cylinder 24, maintaining and recovering the wear-resistant coating liquid, referring to fig. 1, the atomized liquid recovery mechanism 20 further includes a second guide rail 29, and the bottom of the spraying machine platform 30 is fixedly connected to a slide block of the second guide rail 29. The applicator station 30 is pulled out along the second guide rail 29, which facilitates the removal of the liquid storage cylinder 24.

Preferably, the utility model further comprises a bottle blank transfer mechanism, wherein the bottle blank transfer mechanism is used for sucking the bottle blank, placing the bottle blank in a spraying area for spraying, and placing the bottle blank at a discharging end for blanking after the spraying is finished. Referring to fig. 11 to 13, the bottle preform transfer mechanism includes a preform sucking plate 60 for sucking the bottle preform and a two-axis robot 50 for driving the preform sucking plate 60 to move: the blank sucking plate 60 is a prior art known to those skilled in the art, and the bottle blank is sucked by negative pressure, and the principle is not described again; the two-axis robot 50 specifically includes: the X-axis motor 51, the third guide rail 52, the sliding seat 53, the fourth guide rail 54, the mounting frame 55, the Y-axis motor 56 and the ball screw 57. The two-axis manipulator comprises a main frame 58, a third guide rail 52, a sliding seat 53, an X-axis motor 51, a synchronous belt and a two-axis manipulator 50, wherein the third guide rail 52 is horizontally arranged on the main frame 58, the sliding seat 53 is fixed on a sliding block of the third guide rail 52, the X-axis motor 51 is fixed on the main frame 58, and power output by the X-axis motor 51 drives the sliding seat 53 to horizontally slide along the third guide rail 52 through the transmission of the synchronous belt, so that the movement of the two-axis manipulator 50 along the X-axis direction is realized; the fourth guide rail 54 is vertically arranged on the mounting frame 55, the sliding seat 53 is simultaneously fixed on a sliding block of the fourth guide rail 54, the Y-axis motor 56 is fixed on the mounting frame 55, the ball screw 57 is in transmission connection with the Y-axis motor 56, and the rotary motion output by the Y-axis motor 56 is converted into linear motion through the ball screw 57 to drive the mounting frame 55 to vertically move along the fourth guide rail 54, so that the movement of the two-axis manipulator 50 along the Y-axis direction is realized; the blank absorbing plate 60 is fixedly connected below the mounting frame 55.

Preferably, referring to fig. 1-2, the present invention further includes a blanking belt 70, and the blanking belt 70 is disposed at a side of the coater station 30.

The two-axis robot 50 first sucks the PET bottle preform 80 on a feeding belt (not shown), and places the bottle preform into a spraying area for spraying the abrasion-resistant coating solution through the coordinated movement of the X-axis and the Y-axis. After the spraying is finished, the two-axis manipulator 50 absorbs the PET bottle blank 80 again and transfers the PET bottle blank into the blanking belt 70 area, and the bottle blank enters the stacking area for stacking after being blanked.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a bottle base surface spraying device which characterized in that includes:

the spraying mechanism includes: the spray gun mounting frame comprises a spray gun, a spray gun mounting plate and a spray gun mounting frame; the spray gun mounting frames are fixed on the spray gun mounting frames, the spray guns are connected on the spray gun mounting frames, and the spray guns are simultaneously connected with an access gate valve control air pipe, an atomization air pipe and an anti-wear coating liquid access pipe; PET bottle blanks are arranged on the spray gun mounting plates, and a plurality of spray guns are uniformly arranged in the peripheral direction of each PET bottle blank;

the atomized liquid recovery mechanism comprises a vacuum generator, a recovery box body, a filter element and a liquid storage cylinder; the vacuum generator is connected with an air inlet pipe and an air outlet pipe, the recovery box body is arranged above the vacuum generator, and the filter element is arranged in the recovery box body; the bottom of the recovery box body is provided with a filtrate port, and the liquid storage cylinder is arranged below the filtrate port of the recovery box body;

the spraying machine platform, the spraying mechanism with the atomized liquid recovery mechanism all is fixed in on the spraying machine platform, the spraying mechanism set up in the top of the atomized liquid recovery mechanism.

2. The preform outer surface spray coating device of claim 1, wherein the preform outer surface spray coating device further comprises a spray driving mechanism; the spraying mechanism includes: the horizontal driving motor, the transmission rod, the transmission wheel, the transmission chain, the chain connecting seat and the first guide rail; the output end of the driving motor is connected with the transmission rod, the transmission wheel is fixedly connected to the end part of the transmission rod, the transmission chain is meshed with the transmission wheel, and the chain connecting seat is fixedly connected to the transmission chain; the chain connecting seat and the sliding block of the first guide rail are fixedly connected to the bottom of the spray gun mounting plate; the spraying mechanism further comprises: the device comprises a first guide rail mounting plate, a guide rod, a cylinder mounting plate and a telescopic cylinder; the first guide rail is fixed on the first guide rail mounting plate, the guide rod is perpendicularly connected to the bottom of the first guide rail mounting plate, the cylinder mounting plate is fixed to the bottom of the guide rod, and the telescopic cylinder is fixed on the cylinder mounting plate.

3. The apparatus for spray coating the outer surface of a preform according to claim 1, wherein the spray mechanism further comprises a spray gun adjusting block; the spray gun mounting frame is T-shaped, and the side part of the spray gun adjusting block is rotatably connected to the cross rod of the spray gun mounting frame; the spray gun is connected to the spray gun regulating block.

4. The apparatus for spray coating the outer surface of a preform according to claim 3, wherein the spray mechanism further comprises a spray gun adjusting lever; one end of the spray gun adjusting rod is connected to the bottom of the spray gun adjusting block in a sliding mode, and the other end of the spray gun adjusting rod is fixedly connected with the spray gun.

5. The apparatus for spray coating the outer surface of a preform according to claim 1, wherein the atomized liquid recovery mechanism further comprises: filtering with a screen; the filter screen sets up the filter core top is located retrieve the box.

6. The apparatus for spray coating the outer surface of a preform according to claim 1, wherein the atomized liquid recovery mechanism further comprises: a drawer body; the side part of the recovery box body is provided with an opening for the drawer body to be put in or drawn out, the drawer body is inserted in the recovery box body, and the filter element is arranged on the drawer body.

7. The apparatus for spraying the outer surface of a preform according to claim 4, wherein the recycling box comprises a left box and a right box, a filter screen and a filter core are respectively disposed in the left box and the right box, one of the liquid storage cylinders is disposed below the left box and the right box, and the vacuum generator is disposed between the two liquid storage cylinders.

8. The apparatus for spray coating the outer surface of a preform according to claim 1, wherein the atomized liquid recovery mechanism comprises: a second guide rail; the bottom of the spraying machine platform is fixedly connected to the sliding block of the second guide rail.

9. The preform outer surface spray coating device of claim 1, wherein the preform outer surface spray coating device further comprises: a bottle blank transfer mechanism; the bottle blank transfer mechanism comprises a blank suction plate for sucking the bottle blank and a two-axis manipulator for driving the blank suction plate to move; the two-axis robot includes: the X-axis motor, the third guide rail, the sliding seat, the fourth guide rail, the mounting frame, the Y-axis motor and the ball screw are arranged on the base; the bottle blank outer surface spraying device further comprises a main frame, the third guide rail is horizontally arranged on the main frame, the sliding seat is fixed on a sliding block of the third guide rail, the X-axis motor is fixed on the main frame, and the X-axis motor drives the sliding seat to horizontally slide along the third guide rail through synchronous belt transmission; the fourth guide rail is vertically arranged on the mounting rack, the sliding seat is simultaneously fixed on a sliding block of the fourth guide rail, the Y-axis motor is fixed on the mounting rack, and the ball screw is in transmission connection with the Y-axis motor so as to drive the mounting rack to vertically move along the fourth guide rail; inhale embryo board fixed connection in mounting bracket below.

10. The apparatus for spray coating the outer surface of a preform according to claim 9, wherein said apparatus further comprises a blanking belt; the blanking belt is arranged on the side part of the spraying machine table.