Spraying device and method for external treatment of bottle body based on glass bottle production

Abstract

The present invention relates to the technical field of spraying devices, and discloses a spraying device and method for external treatment of bottle bodies based on glass bottle production, wherein the spraying device for external treatment of bottle bodies based on glass bottle production comprises a spraying reciprocator, a workbench arranged on one side of the spraying reciprocator, and a spray gun arranged on a movable rod of the spraying reciprocator. The workbench is provided with a support assembly rotatably used to place glass bottles, and two mounting racks are symmetrically arranged on the circumference of the support assembly. The mounting racks are provided with hollow shielding cloths for covering the glass bottle bodies, and the mounting racks are also provided with strong magnets, and the strong magnets on the two mounting racks attract each other when they are close to each other; a driving mechanism is also provided on the circumference of the support assembly. The device replaces disposable consumables with hollow shielding cloths that can be reused hundreds of times, and combines with an adaptive fitting design to significantly reduce production costs and waste emissions.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying devices, and in particular to a spraying device and method for treating the exterior of glass bottles. Background Art

[0002] In the field of glass bottle packaging, in order to enhance brand recognition and product value, local spraying (such as corporate decorative patterns, etc.) is often performed on the outer surface of the bottle. This type of spraying usually requires precise masking of non-target areas of the bottle to ensure clear patterns and sharp boundaries, while preventing the paint from contaminating other parts of the bottle.

[0003] The currently widely used local occlusion technology has the following significant defects:

[0004] 1. Rigid hollow fixture method: Although it can fix the bottle body and expose the local spray area, its adaptability is poor. When changing the bottle shape or pattern, a new fixture needs to be customized, which has the problems of high cost, long cycle, and cumbersome storage and switching.

[0005] 2. Disposable film partial shielding method: Although it has certain flexibility, it relies on high-frequency consumables, and the cost of material consumption and waste disposal continues to accumulate, which puts great pressure on the environmental protection.

[0006] Therefore, existing technologies are difficult to simultaneously meet the market demands for small batches, multiple varieties and sustainable production. Summary of the Invention

[0007] In view of the problems in the existing technology such as poor adaptability and high cost of rigid hollow fixtures, large waste of disposable masking film consumables and great environmental pressure, a spray device and method for external treatment of bottle bodies based on glass bottle production are proposed.

[0008] On the one hand, the present application provides a spraying device for external treatment of bottle bodies based on glass bottle production, the purpose of which is to replace disposable consumables with hollow masking cloth that can be reused hundreds of times, combined with an adaptive fitting design, to significantly reduce production costs and waste emissions, and ultimately achieve the coordinated optimization of economy, environmental protection and high-quality spraying.

[0009] The technical solution of the present invention is: a spraying device for external treatment of bottle bodies based on glass bottle production, including a spraying reciprocator, a workbench arranged on one side of the spraying reciprocator and a spray gun arranged on the movable rod of the spraying reciprocator, a support assembly rotatably used to place glass bottles is provided on the workbench, two mounting racks are symmetrically arranged on the circumference of the support assembly, a hollow shielding cloth for covering the glass bottle body is provided on the mounting rack, a strong magnet is also provided on the mounting rack, and the strong magnets on the two mounting racks attract each other when they are close; a driving mechanism is also provided on the circumference of the support assembly, the driving mechanism is used to drive the hollow shielding cloth to cover the glass bottle body; the driving mechanism includes two arc-shaped push plates that can approach each other for pushing the mounting rack; a separation mechanism is provided on the workbench, the hollow shielding cloth is covered on the glass bottle body, and the separation mechanism is used to force the two mounting racks to separate and then reset.

[0010] Furthermore, the mounting frame includes a connecting member arranged on the peripheral side of the support component, a transverse rod arranged at one end of the connecting member, and a longitudinal rod arranged at the other end of the connecting member, and there are multiple transverse rods, and two adjacent transverse rods are plugged into each other, wherein one end of the two transverse rods is plugged into one end of the connecting member, and there are multiple longitudinal rods, and two adjacent longitudinal rods are plugged into each other, wherein one end of the two longitudinal rods is plugged into the other end of the connecting member, the hollow shielding cloth is sleeved on the rod walls of the multiple transverse rods and the multiple longitudinal rods, and the strong magnet is fixedly installed on the outer wall of the connecting member.

[0011] Furthermore, the support assembly includes a vertical pole rotatably mounted on the top surface of the workbench, a threaded section arranged on the top end of the vertical pole, and a bearing block detachably mounted on the threaded section.

[0012] Furthermore, the inner wall of the bearing block is threadedly connected to the outer wall of the threaded section.

[0013] Furthermore, the driving mechanism also includes a fixing frame arranged at the bottom of the mounting frame, a sliding hole opened on the outer wall of the arc-shaped push plate for installing the fixing frame, a through groove opened on the rod wall of the fixing frame, a sleeve arranged on the rod wall of the vertical rod, and a pull rod hinged on the bottom surface of the arc-shaped push plate, and the end of the pull rod away from the arc-shaped push plate is rotatably connected to the outer wall of the sleeve; the driving mechanism also includes a positioning cylinder threadedly installed on the outer wall of the threaded section.

[0014] Furthermore, the driving mechanism also includes a lifting cylinder mounted on the outer wall of the arc-shaped push plate, and the inner wall of the lifting cylinder is fixedly connected to the outer wall of the fixed frame; the driving mechanism also includes a tension spring arranged on the inner wall of the lifting cylinder, and the end of the tension spring away from the lifting cylinder is fixedly connected to the outer wall of the arc-shaped push plate; the driving mechanism also includes a bracket arranged on the bottom surface of the lifting cylinder, and the bracket can be raised and lowered on the workbench.

[0015] Furthermore, the driving mechanism also includes a roller arranged at the bottom end of the bracket, a slide rail arranged on the workbench, a wedge block arranged on the slide rail, and a pedal arranged on the outer wall of the wedge block, and the outer wall of the wedge block and the outer wall of the roller are adapted to each other.

[0016] Furthermore, the separation mechanism includes multiple groups of separation spring fragments arranged on the top of the lifting cylinder, each group of separation spring fragments includes two separation spring fragments, and the tips of the two separation spring fragments contact each other to form an inverted V shape, and the tips of the separation spring fragments are coated with a hardened layer; the separation mechanism also includes an inclined groove opened on the side of the separation spring fragment close to the strong magnet.

[0017] Furthermore, the separation mechanism also includes a mounting groove opened on the top of the lifting cylinder and an adjustment plate arranged inside the mounting groove, and one end of the adjustment plate close to the separation spring piece is fixedly connected to the bottom end of the separation spring piece.

[0018] Furthermore, the present invention also provides a spraying method for treating the exterior of a bottle body based on glass bottle production, using a spraying device for treating the exterior of a bottle body based on glass bottle production, comprising the following steps:

[0019] Step 1: The two arc-shaped push plates move closer to each other to push the hollow shielding cloth close to the glass bottle body, causing the strong magnets on the two mounting frames to attract each other, and finally the two mounting frames are fixed on the glass bottle body, and the hollow shielding cloth shields the non-sprayed part of the glass bottle body; Step 2: The spray gun sprays the hollow area of ​​the hollow shielding cloth to complete the local spraying of the outer surface of the glass bottle body; Step 3: The lifting and lowering cylinder is lifted so that the tips of the two adjacent separation shrapnel are inserted into the middle of the strong magnets that are adsorbed together, and then the inclined surface of the separation shrapnel exerts a radial separation force on the strong magnet, and the two mounting frames are released from the encircling state; Step 4: The two mounting frames are reset under the action of gravity, and the hollow shielding cloth is detached from the glass bottle body.

[0020] Beneficial effects of the present invention:

[0021] 1. The modular mounting frame, adjustable transverse and longitudinal rods enable quick adaptation to glass bottles of different sizes and shapes, significantly improving production efficiency.

[0022] 2. The strong magnetic attraction and non-contact hollow shielding cloth design ensure the shielding stability while avoiding the paint penetration problem caused by traditional contact shielding, significantly improving product quality.

[0023] 3. In terms of environmental protection and economy, reusable hollow screen fabrics can reduce consumable costs compared to disposable film processes, while also reducing waste generation, meeting green manufacturing requirements;

[0024] 4. All operations can be completed by pushing the pedal, which not only reduces energy consumption but also simplifies human-computer interaction. Overall, this device is significantly superior to traditional spraying processes in terms of adaptability, precision, environmental protection and ease of operation. It is particularly suitable for the customized production needs of small batches and multiple varieties of high-end glass bottles. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a perspective view of the spraying device of the present invention;

[0026] Figure 2 This is a schematic diagram of the installation of the pedal in the present invention;

[0027] Figure 3 is a cross-sectional view of the lifting cylinder of the present invention;

[0028] Figure 4 For the present invention Figure 3 A magnified schematic diagram of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the installation of the hollow shielding cloth in the present invention;

[0030] Figure 6 is a three-dimensional diagram of the mounting frame of the present invention;

[0031] Figure 7 A three-dimensional diagram of the hollow shielding cloth of the present invention;

[0032] Figure 8 This is a schematic diagram of the installation of the transverse insertion rod in the present invention;

[0033] Figure 9 Schematic diagram of the installation of the pull rod in the present invention;

[0034] Figure 10 This is a schematic diagram of the installation of the separation spring in the present invention;

[0035] Figure 11 A three-dimensional diagram of the separation spring in the present invention;

[0036] Figure 12 It is a front view of the separation spring piece in the present invention.

[0037] In the picture:

[0038] 1. Spray reciprocating machine; 2. Workbench; 3. Spray gun; 4. Support assembly; 5. Hollow shielding cloth; 6. Mounting frame; 7. Connector; 8. Horizontal plug rod; 9. Vertical plug rod; 10. Strong magnet; 11. Lifting cylinder; 12. Fixing frame; 13. Through slot; 14. Arc push plate; 15. Slide hole; 16. Pull rod; 17. Sleeve; 18. Vertical pole; 19. Threaded section; 20. Loading block; 21. Positioning cylinder; 22. Bracket; 23. Roller; 24. Wedge; 25. Pedal; 26. Slide rail; 27. Mounting slot; 28. Adjustment plate; 29. ​​Separation spring; 30. Inclined slot; 31. Tension spring. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] Example 1, with reference to Figures 1-12 , which is the first embodiment of the present invention, provides: a spraying device for external treatment of bottle bodies based on glass bottle production, comprising a spraying reciprocator 1, a workbench 2 fixedly mounted on one side of the spraying reciprocator 1, and a spray gun 3 slidably mounted on the movable rod of the spraying reciprocator 1, a support assembly 4 rotatably provided on the workbench 2 for placing glass bottles, two mounting racks 6 symmetrically provided on the circumference of the support assembly 4, a hollow shielding cloth 5 for covering the glass bottle body is provided on the mounting rack 6, a strong magnet 10 is also provided on the mounting rack 6, and the strong magnets 10 on the two mounting racks 6 attract each other when they are close; a driving mechanism is also provided on the circumference of the support assembly 4, the driving mechanism is used to drive the hollow shielding cloth 5 to cover the glass bottle body; the driving mechanism includes two arc-shaped push plates 14 that can approach each other for pushing the mounting rack 6; a separation mechanism is provided on the workbench 2, the hollow shielding cloth 5 is covered after the glass bottle body, and the separation mechanism is used to force the two mounting racks 6 to separate and reset.

[0041] Reference Figure 2-Figure 3 The support assembly 4 includes a vertical rod 18 rotatably mounted on the top surface of the workbench 2, a threaded section 19 provided at the top of the vertical rod 18, and a bearing block 20 detachably mounted on the threaded section 19. The inner wall of the bearing block 20 is threadedly connected to the outer wall of the threaded section 19.

[0042] Specifically, a stepper motor (not shown in the figure) is connected to the bottom of the vertical rod 18, and the speed is controlled by PLC to drive the glass bottle to rotate to ensure uniformity of spraying. At the same time, the vertical rod 18 can be controlled to rotate to a fixed angle or not to rotate through the stepper motor, or the vertical rod 18 can be manually controlled to rotate or not to rotate by the sprayer. The top shape of the supporting block 20 corresponds to the shape of the bottle mouth of the glass bottle. The height of the supporting block 20 and the glass bottle is adjusted by the threaded section 19 so that the center of the bottle body is aligned with the spray gun 3. In addition, the supporting blocks 20 corresponding to different specifications can be replaced through the threaded section 19.

[0043] The hollow shielding cloth 5 is provided with a pattern (not shown in the figure) that needs to be partially sprayed, and the specific shape of the pattern can be determined according to actual use requirements.

[0044] Reference Figure 5-Figure 8 The mounting frame 6 includes a connecting member 7 arranged on the side of the supporting component 4, a horizontal plug rod 8 arranged at one end of the connecting member 7, and a longitudinal plug rod 9 arranged at the other end of the connecting member 7, and a plurality of horizontal plug rods 8 are provided, and two adjacent horizontal plug rods 8 are plugged into each other, wherein one end of the two horizontal plug rods 8 is plugged into one end of the connecting member 7, and a plurality of longitudinal plug rods 9 are provided, and two adjacent longitudinal plug rods 9 are plugged into each other, wherein one end of the two longitudinal plug rods 9 is plugged into the other end of the connecting member 7, the hollow shielding cloth 5 is sleeved on the rod wall of the plurality of horizontal plug rods 8 and the plurality of longitudinal plug rods 9, and the strong magnet 10 is fixedly installed on the outer wall of the connecting member 7.

[0045] Specifically, the outer wall of the connector 7 is provided with a positioning protrusion (not shown in the figure), which cooperates with the groove of the adjacent mounting frame 6 to ensure that the position deviation of the strong magnet 10 is small when it is attracted. Because the transverse rods 8, longitudinal rods 9, and connector 7 need to have a certain degree of elastic deformation, they are preferably made of plastic. Through the combined design of the connector 7, transverse rods 8, and longitudinal rods 9, the device can flexibly adjust the number of transverse rods 8 and longitudinal rods 9 on the mounting frame 6 according to the size of the bottle body, ensuring that the hollow shielding cloth 5 can completely cover the area of ​​the glass bottle body that needs to be shielded, thereby increasing the applicability of the device.

[0046] Reference Figures 1-9 The driving mechanism also includes a fixing frame 12 arranged at the bottom of the mounting frame 6, a sliding hole 15 opened on the outer wall of the arc-shaped push plate 14 for installing the fixing frame 12, a through groove 13 opened on the rod wall of the fixing frame 12, a sleeve 17 sleeved on the rod wall of the vertical rod 18, and a pull rod 16 hinged on the bottom surface of the arc-shaped push plate 14, and the end of the pull rod 16 away from the arc-shaped push plate 14 is rotatably connected to the outer wall of the sleeve 17; the driving mechanism also includes a positioning cylinder 21 threadedly installed on the outer wall of the threaded section 19.

[0047] Specifically, by rotating the positioning cylinder 21, the height of the positioning cylinder 21 can be adjusted, and then the height of the hollow shielding cloth 5 (hollow part) on the glass bottle body can be adjusted. When the sleeve 17 contacts the positioning cylinder 21, the two arc-shaped push plates 14 can approach each other to push the mounting frame 6 closer to the glass bottle.

[0048] Reference Figure 1-Figure 2 The driving mechanism also includes a lifting cylinder 11 sleeved on the outer wall of the arc-shaped push plate 14, and the inner wall of the lifting cylinder 11 is fixedly connected to the outer wall of the fixed frame 12; the driving mechanism also includes a tension spring 31 fixedly installed on the inner wall of the lifting cylinder 11, and the end of the tension spring 31 away from the lifting cylinder 11 is fixedly connected to the outer wall of the arc-shaped push plate 14; the driving mechanism also includes a bracket 22 fixedly installed on the bottom surface of the lifting cylinder 11, and the bracket 22 can be lifted and lowered on the workbench 2.

[0049] Specifically, the tension spring 31 can provide the two arc-shaped push plates 14 with power to reset after the two arc-shaped push plates 14 approach each other, and can drive the lifting cylinder 11 to move upward by controlling the bracket 22 to move upward.

[0050] Reference Figure 1-Figure 2 The driving mechanism also includes a roller 23 rotatably mounted at the bottom end of the bracket 22, a slide rail 26 fixedly mounted on the workbench 2, a wedge 24 slidably mounted on the slide rail 26, and a pedal 25 fixedly mounted on the outer wall of the wedge 24, and the outer wall of the wedge 24 is adapted to the outer wall of the roller 23.

[0051] Specifically, by pushing the pedal 25, the wedge block 24 can be driven to slide along the slide rail 26, and its inclined surface pushes the roller 23 to rise, thereby driving the lifting cylinder 11 to move upward, which reduces energy consumption and simplifies human-computer interaction.

[0052] Reference Figure 10-12 The separation mechanism includes multiple sets of separation springs mounted on the top of the lifting cylinder 11. Each set includes two separation springs 29, with the tips of the two separation springs 29 contacting each other to form an inverted V-shape. The tips of the separation springs 29 are hardened. The separation mechanism also includes an inclined slot 30 defined on the side of the separation springs 29 that is closest to the powerful magnet 10. The separation mechanism also includes a mounting slot 27 defined on the top of the lifting cylinder 11 and an adjustment plate 28 slidably mounted within the mounting slot 27. The end of the adjustment plate 28 that is closest to the separation spring 29 is fixedly connected to the bottom end of the separation spring 29.

[0053] Specifically, the number of mounting slots 27 corresponds to the number of separation spring groups. The hardened tip of the combined inverted V-shaped separation spring 29 is inserted into the gap of the strong magnet 10, which can release the magnetic attraction of the strong magnet 10. The position of the separation spring 29 can be adjusted by sliding the adjustment plate 28, thereby being able to adapt to glass bottles of more specifications and separate the strong magnets 10 on the glass bottles of more specifications.

[0054] After the two mounting frames 6 are pushed by the arc-shaped push plate 14 to cover the body of the glass bottle, the lifting cylinder 11 descends and passes through the inclined slot 30, and the two adjacent separation springs 29 are deformed in opposite directions, which plays a certain position correction role on the strong magnet 10.

[0055] Working principle: First, the operator places the glass bottle to be sprayed on the supporting block 20 of the support assembly 4, and adjusts the height of the supporting block 20 and the glass bottle through the threaded section 19 so that the center of the bottle body is aligned with the spray gun 3. In addition, the supporting blocks 20 corresponding to different specifications can also be replaced through the threaded section 19. Then, the number of horizontal rods 8 and vertical rods 9 on the mounting frame 6 is adjusted according to the size of the bottle body to ensure that the hollow shielding cloth 5 can completely cover the area that needs to be shielded on the glass bottle body.

[0056] By pushing pedal 25, wedge 24 slides along rail 26, whose inclined surface pushes roller 23 upward, thereby driving lift cylinder 11 upward. Simultaneously, the height of positioning cylinder 21 is adjustable. When sleeves 17 come into contact with each other, the two curved push plates 14 move closer together, pushing mounting bracket 6 toward the glass bottle. During this process, the hollow screen 5 gradually wraps around the bottle, and the powerful magnets 10 on mounting bracket 6 attract each other as they approach, keeping the hollow screen 5 in a stable and fitted state.

[0057] It should be noted that the outer periphery of the hollow shielding cloth 5 (the part sleeved on the horizontal insertion rod 8 and the longitudinal insertion rod 9) is in contact with the body of the glass bottle, while a certain gap is maintained between the inside of the hollow shielding cloth 5 and the bottle body. On the one hand, this gap can prevent the hollow part of the hollow shielding cloth 5 from directly contacting the body of the glass bottle and causing paint penetration; on the other hand, it can prevent the gap from being too large, causing the paint to spread when passing through the hollow part of the hollow shielding cloth 5.

[0058] During the spraying stage, the spray gun 3 moves along the movable rod driven by the spray reciprocating machine 1 to accurately spray the opening area of ​​the hollow shielding cloth 5. The support component 4 drives the glass bottle to rotate slowly to ensure that the coating evenly covers the target area.

[0059] After spraying is completed, the operator releases the pedal 25, and the lifting cylinder 11 descends under the action of gravity. At this time, the separation spring 29 fixed on the top of the lifting cylinder 11 is inserted into the gap between the two powerful magnets 10. Its inverted V-shaped tip and inclined groove 30 are designed to exert radial separation force on the magnets, forcing the mounting bracket 6 to separate from the bottle body. Finally, the mounting bracket 6 is reset under the action of gravity, and the hollow shielding cloth 5 is separated from the bottle body, completing a working cycle.

[0060] Example 2, reference Figures 1-12 , which is a second embodiment of the present invention, provides: a spraying method for treating the exterior of a bottle body based on glass bottle production, using a spraying device for treating the exterior of a bottle body based on glass bottle production, comprising the following steps:

[0061] Step 1: The operator places the glass bottle to be sprayed on the bearing block 20 of the support assembly 4. The two arc-shaped push plates 14 move closer to each other to push the hollow shielding cloth 5 close to the glass bottle body, causing the strong magnets 10 on the two mounting brackets 6 to attract each other. Finally, the two mounting brackets 6 are fixed around the glass bottle body, and the hollow shielding cloth 5 shields the non-spraying part of the glass bottle body. The arc-shaped push plates 14 are reset under the action of the tension spring 31.

[0062] Step 2: The spray gun 3 sprays the hollow area of ​​the hollow shielding cloth 5 to complete the partial spraying of the outer surface of the glass bottle;

[0063] Step 3: Lift the lowering cylinder 11 upward, so that the tips of the two adjacent separation springs 29 are inserted into the middle of the strong magnets 10 that are attracted together. Then, the inclined surfaces of the separation springs 29 exert radial separation force on the strong magnets 10, and the two mounting frames 6 are released from the encircling state.

[0064] Step 4: The two mounting frames 6 are reset under the action of gravity, the hollow shielding cloth 5 is separated from the glass bottle body, and the glass bottle is partially sprayed.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A spraying device for treating the exterior of a bottle body in glass bottle production, comprising a spraying reciprocating machine (1), a workbench (2) arranged on one side of the spraying reciprocating machine (1), and a spray gun (3) arranged on the movable end of the spraying reciprocating machine (1), characterized in that: The workbench (2) is provided with a rotatable support assembly (4) for placing glass bottles, and two mounting racks (6) are symmetrically provided on the circumference of the support assembly (4). The mounting racks (6) are provided with hollow shielding cloths (5) for covering the bodies of the glass bottles, and the mounting racks (6) are also provided with strong magnets (10), and the strong magnets (10) on the two mounting racks (6) attract each other when they are close to each other. A driving mechanism is also provided on the peripheral side of the support assembly (4), and the driving mechanism is used to drive the hollow shielding cloth (5) to cover the glass bottle body; The driving mechanism comprises two arc-shaped push plates (14) that can approach each other and are used to push the mounting frame (6); The workbench (2) is provided with a separation mechanism, and the hollow shielding cloth (5) is wrapped behind the glass bottle body. The separation mechanism is used to force the two mounting frames (6) to separate and then reset; The support assembly (4) comprises a vertical rod (18) rotatably mounted on the top surface of the workbench (2), a threaded section (19) disposed at the top end of the vertical rod (18), and a bearing block (20) detachably mounted on the threaded section (19); The driving mechanism further comprises a fixing frame (12) arranged at the bottom of the mounting frame (6), a sliding hole (15) provided on the outer wall of the arc-shaped push plate (14) for installing the fixing frame (12), a through groove (13) provided on the rod wall of the fixing frame (12), a sleeve (17) sleeved on the rod wall of the vertical rod (18), and a pull rod (16) hinged to the bottom surface of the arc-shaped push plate (14), and the end of the pull rod (16) away from the arc-shaped push plate (14) is rotatably connected to the outer wall of the sleeve (17); The driving mechanism further comprises a positioning cylinder (21) threadedly mounted on the outer wall of the threaded section (19); The driving mechanism further comprises a lifting cylinder (11) sleeved on the outer wall of the arc-shaped push plate (14), and the inner wall of the lifting cylinder (11) is fixedly connected to the outer wall of the fixing frame (12); The driving mechanism further comprises a tension spring (31) arranged on the inner wall of the lifting cylinder (11), and one end of the tension spring (31) away from the lifting cylinder (11) is fixedly connected to the outer wall of the arc-shaped push plate (14); The driving mechanism further includes a bracket (22) arranged on the bottom surface of the lifting cylinder (11), and the bracket (22) is capable of being raised and lowered on the workbench (2); The separation mechanism comprises a plurality of separation spring pieces arranged on the top of the lifting cylinder (11), each separation spring piece group comprising two separation spring pieces (29), the tips of the two separation spring pieces (29) contacting each other to form an inverted V shape, and the tips of the separation spring pieces (29) are plated with a hardened layer; The separation mechanism further includes an inclined slot (30) formed on a side of the separation spring (29) close to the strong magnet (10).

2. The spraying device for treating the exterior of a glass bottle according to claim 1, characterized in that: The mounting frame (6) includes a connecting member (7) arranged on the peripheral side of the supporting assembly (4), a transverse plug rod (8) arranged at one end of the connecting member (7), and a longitudinal plug rod (9) arranged at the other end of the connecting member (7), and a plurality of transverse plug rods (8) are provided, and two adjacent transverse plug rods (8) are plugged into each other, wherein one end of the two transverse plug rods (8) is plugged into one end of the connecting member (7), and a plurality of longitudinal plug rods (9) are provided, and two adjacent longitudinal plug rods (9) are plugged into each other, wherein one end of the two longitudinal plug rods (9) is plugged into the other end of the connecting member (7), the hollow shielding cloth (5) is sleeved on the rod walls of the plurality of transverse plug rods (8) and the plurality of longitudinal plug rods (9), and the strong magnet (10) is fixedly installed on the outer wall of the connecting member (7).

3. The spraying device for treating the exterior of a glass bottle according to claim 1, characterized in that: The inner wall of the bearing block (20) is threadedly connected to the outer wall of the threaded section (19).

4. The spraying device for treating the exterior of a glass bottle according to claim 1, characterized in that: The driving mechanism further comprises a roller (23) arranged at the bottom end of the bracket (22), a slide rail (26) arranged on the workbench (2), a wedge (24) arranged on the slide rail (26), and a pedal (25) arranged on the outer wall of the wedge (24), wherein the outer wall of the wedge (24) and the outer wall of the roller (23) are adapted to each other.

5. The spraying device for treating the exterior of a glass bottle according to claim 1, characterized in that: The separation mechanism further includes a mounting groove (27) provided on the top of the lifting cylinder (11) and an adjustment plate (28) arranged inside the mounting groove (27), and one end of the adjustment plate (28) close to the separation spring piece (29) is fixedly connected to the bottom end of the separation spring piece (29).

6. A spray coating method for treating the exterior of a glass bottle, using the spray coating device for treating the exterior of a glass bottle according to claim 1, characterized in that: The following steps are involved: Step 1: The operator places the glass bottle to be sprayed on the bearing block (20) of the support assembly (4), controls the two arc-shaped push plates (14) to move closer to each other and push the hollow shielding cloth (5) close to the glass bottle body, so as to cause the strong magnets (10) on the two mounting frames (6) to attract each other, and finally the two mounting frames (6) are fixed around the glass bottle body, and the hollow shielding cloth (5) shields the non-spraying part of the glass bottle body, and the arc-shaped push plate (14) is reset under the action of the tension spring (31); Step 2: The spray gun (3) sprays the hollow area of ​​the hollow shielding cloth (5) to complete the partial spraying of the outer surface of the glass bottle; Step 3: Lift the lowering cylinder (11) upwards so that the tips of the two adjacent separation springs (29) are inserted into the middle of the strong magnets (10) adsorbed together, and then the inclined surfaces of the separation springs (29) exert radial separation force on the strong magnets (10), and the two mounting frames (6) are released from the encircling state; Step 4: The two mounting frames (6) are reset under the action of gravity, the hollow shielding cloth (5) is separated from the glass bottle body, and the glass bottle is partially sprayed.

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