Plastic bottle cap surface automatic spray painting device

Abstract

The utility model relates to the technical field of plastic bottle cap painting, and discloses an automatic plastic bottle cap surface painting device which comprises a conveying table and a painting bin, the painting bin covers the middle section of the conveying table, and a fixing mechanism is fixedly installed on a conveying belt in the conveying table; the fixing mechanism comprises a welding base, the welding base is welded to the conveying table, when the bottle cap is clamped on the lifting cylinder, the bottle cap is pressed forcibly so that the bottle cap can press the lifting cylinder, then the lifting cylinder is driven to move downwards, the lifting cylinder moves downwards to drive an abutting block to move downwards, and the abutting block is pushed by a hinge rod to move out of the lifting cylinder in the downward moving process. When the abutting block abuts against the inner wall of the bottle cap, the bottle cap is supported, it is ensured that the central axis of the bottle cap coincides with the central axis of the lifting cylinder, for the bottle caps with different inner diameters, the abutting block only needs to be pressed downwards to stretch out of the lifting cylinder by different lengths, and the fixing mechanism does not need to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of spray painting on plastic bottle caps, in particular to an automatic spray painting device on the surface of a plastic bottle cap. Background Art

[0002] Plastic bottle caps are generally used to seal the mouths of packaging bottles to seal and store the contents of the bottles. General bottle cap spray painting devices mostly place the bottle caps with the spray painting side facing up and place the bottle caps on a conveyor table. The surface is sprayed with paint by the spray painting device and then dried. Therefore, more and more manufacturers choose to use a bottle cap fixing structure to connect the bottle caps to the conveyor table, so that there is enough space between the bottle caps and the conveyor table, thereby ensuring that the spray painting device can fully spray paint the bottle caps. In order to adapt to bottle caps with various inner diameters, the top ring on the fixing structure that fixes the bottle caps is often set to be detachable, and then by replacing top rings of different diameters, bottle caps with different inner diameters can be clamped and fixed. However, the above method still requires workers to manually replace the top ring, which increases the workload of workers and also has the problem of missing or forgetting to replace. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic spray painting device for the surface of a plastic bottle cap to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic spray painting device for the surface of a plastic bottle cap, comprising a conveying platform and a spray painting chamber, wherein the spray painting chamber is covered at the middle section of the conveying platform, and a fixing mechanism is fixedly installed on the conveyor belt in the conveying platform;

[0005] The fixing mechanism includes a welding base, the welding base is welded on the conveying platform, the top of the welding base is fixedly installed with a disassembly seat by bolts, the top of the disassembly seat is rotatably connected to the vertical rod through a bearing, the top sliding sleeve of the vertical rod is provided with a friction ring, the outer wall of the friction ring is fixedly installed with a lifting cylinder, the outer wall of the vertical rod is provided with friction lines, the top of the vertical rod is fixedly installed with a connecting plate, the connecting plate is located in the lifting cylinder, the top of the connecting plate is fixedly installed with a mounting rod, the outer wall of the mounting rod is fixedly installed with a hinge seat, the outer wall of the hinge seat is hinged with a hinge rod through a pin shaft, the top of the hinge rod is hinged with a resistance block through a pin shaft, the resistance block movably passes through the inner wall of the lifting cylinder, and the top of the mounting rod is fixedly installed with a spring, and the top of the spring is fixedly connected to the top inner wall of the lifting cylinder.

[0006] Furthermore, there are three resistance blocks in the lifting cylinder, and they are distributed in a circular array around the central axis of the mounting rod. The outer wall of the resistance block facing the outside of the lifting cylinder is provided with anti-slip grooves. A protrusion is fixedly provided on the outer wall of the resistance block located inside the lifting cylinder, and a ventilation hole is provided on the top of the lifting cylinder.

[0007] Furthermore, transparent glass is fixedly installed on the front and back of the inkjet printing chamber, and curtains are fixedly installed on the left opening and the right opening of the inkjet printing chamber.

[0008] Furthermore, a second mounting frame is fixedly installed on the front and back of the conveying platform, a spray head is fixedly installed on the top of the second mounting frame, and the second mounting frame and the spray head are located in the spray painting chamber.

[0009] Furthermore, a mounting frame 1 is fixedly installed on the front of the conveying platform, a blower head is fixedly installed on the top of the mounting frame 1, and the mounting frame 1 and the blower head are located in the inkjet printing chamber.

[0010] Furthermore, a rack is fixedly installed on the top of the conveying platform, the rack is located in the inkjet printing chamber, the rack is engaged with a gear, and the gear is fixedly sleeved on the outer wall of the vertical pole.

[0011] Furthermore, a ventilation pipe is provided on the top of the spray painting chamber, and an air pump is provided at the rear of the spray painting chamber, and an air inlet end of the air pump is connected to the ventilation pipe.

[0012] Furthermore, the air outlet end of the air pump is connected to a purification box through a pipeline, and the top of the purification box is connected to an exhaust pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. When the bottle cap is stuck on the lifting cylinder, press the bottle cap hard so that the bottle cap presses on the lifting cylinder, which in turn drives the lifting cylinder downward. The downward movement of the lifting cylinder drives the resistance block downward. During the downward movement of the resistance block, it is pushed by the hinged rod and moves outward from the lifting cylinder until the resistance block contacts the inner wall of the bottle cap, propping up the bottle cap and ensuring that the central axis of the bottle cap coincides with the central axis of the lifting cylinder. For bottle caps with different inner diameters, it is only necessary to press down to extend the resistance block from the lifting cylinder to different lengths, without having to replace the fixing mechanism.

[0015] 2. A spring is provided to push the lifting cylinder upward, thereby driving the resistance block upward, so that the hinged rod pulls the resistance block into the lifting cylinder. Friction lines and friction rings are provided so that when the lifting cylinder moves downward and drives the friction ring downward, friction occurs between the friction ring and the friction lines. After the lifting cylinder is released, the friction between the friction lines and the friction ring prevents the spring from pushing the lifting cylinder upward, thereby ensuring that the lifting cylinder will not be pushed upward by the spring when the bottle cap is lifted.

[0016] 3. When the fixing mechanism is driven by the conveyor table to move, the gear is pushed by the rack to rotate, which in turn drives the vertical rod to rotate. The rotation of the vertical rod drives the connecting plate to rotate, which in turn drives the mounting rod to rotate. The rotation of the mounting rod drives the hinge seat to rotate, which in turn drives the hinge rod to make a circular motion. The hinge rod drives the resistance block to make a circular motion, which in turn drives the bottle cap to rotate, so that the bottle cap rotates while being sprayed, thereby ensuring that the bottle cap can be sprayed evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 For this utility model Figure 1 A schematic diagram of the structure from the back view;

[0019] Figure 3 This is a schematic diagram of the internal structure of the inkjet printing chamber of the utility model;

[0020] Figure 4 This is a structural diagram of the fixing mechanism of the utility model;

[0021] Figure 5 This is a schematic structural diagram of a front cross-sectional view of the lifting cylinder of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the interference block and the hinged rod of the utility model.

[0023] In the figure: 1. Conveying platform; 2. Spray painting chamber; 201. Transparent glass; 3. Fixing mechanism; 301. Welding base; 302. Disassembly base; 303. Vertical pole; 304. Lifting cylinder; 305. Friction pattern; 306. Friction ring; 307. Connecting plate; 308. Mounting rod; 309. Articulated seat; 3010. Articulated rod; 3011. Resistance block; 3012. Spring; 4. Ventilation duct; 5. Vacuum pump; 6. Purification box; 601. Exhaust pipe; 7. Mounting frame 1; 8. Blowing head; 9. Mounting frame 2; 10. Spraying head; 11. Rack; 12. Gear; 13. Ventilation hole; 14. Curtain. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] See also Figures 1-6 The utility model provides a technical solution: an automatic spray painting device for the surface of a plastic bottle cap, comprising a conveying platform 1 and a spray painting chamber 2, wherein the spray painting chamber 2 is covered at the middle section of the conveying platform 1, and a fixing mechanism 3 is fixedly installed on the conveyor belt in the conveying platform 1;

[0026] The fixing mechanism 3 includes a welding base 301, which is welded to the conveyor 1. The top of the welding base 301 is fixedly installed with a disassembly base 302 by bolts. The top of the disassembly base 302 is rotatably connected to the vertical rod 303 through a bearing. The top sliding sleeve of the vertical rod 303 is provided with a friction ring 306. The outer wall of the friction ring 306 is fixedly installed with a lifting cylinder 304. The outer wall of the vertical rod 303 is provided with friction lines 305. The top of the vertical rod 303 is fixedly installed with a connecting disk 307. The connecting disk 307 is located in the lifting cylinder 304. The top of the connecting disk 307 is fixedly installed with a mounting plate. The outer wall of the mounting rod 308 is fixedly installed with a hinge seat 309, and the outer wall of the hinge seat 309 is hinged with a hinge rod 3010 through a pin shaft. The top of the hinge rod 3010 is hinged with a resistance block 3011 through a pin shaft. The resistance block 3011 movably penetrates the inner wall of the lifting cylinder 304. The top of the mounting rod 308 is fixedly installed with a spring 3012. The top of the spring 3012 is fixedly connected to the top inner wall of the lifting cylinder 304. A welding base 301 is welded on the conveyor belt in the conveying platform 1 for installing and removing the seat 302. When the bottle cap is stuck on the lifting cylinder 304, press the bottle cap hard. The bottle cap presses on the lifting cylinder 304, thereby driving the lifting cylinder 304 to move downward. The downward movement of the lifting cylinder 304 drives the resistance block 3011 to move downward. During the downward movement of the resistance block 3011, it is pushed by the hinged rod 3010 and moves toward the outside of the lifting cylinder 304 until the resistance block 3011 is against the inner wall of the bottle cap, propping up the bottle cap and ensuring that the central axis of the bottle cap coincides with the central axis of the lifting cylinder 304. For bottle caps with different inner diameters, it is only necessary to press downward to make the resistance block 3011 extend from the lifting cylinder 304 to different lengths. There is no need to replace the fixing mechanism 3. A spring 3012 is provided to push the lifting cylinder 304 moves upward, thereby driving the resistance block 3011 to move upward, so that the hinge rod 3010 pulls the resistance block 3011 into the lifting cylinder 304. The friction lines 305 and the friction ring 306 are provided so that when the lifting cylinder 304 moves downward and drives the friction ring 306 to move downward, the friction ring 306 and the friction lines 305 will rub against each other. After the lifting cylinder 304 is released, the friction between the friction lines 305 and the friction ring 306 prevents the spring 3012 from pushing the lifting cylinder 304 upward, thereby ensuring that the lifting cylinder 304 will not be pushed upward by the spring 3012 when the bottle cap is supported;

[0027] There are three friction blocks 3011 in the lifting cylinder 304, and they are distributed in a circular array around the central axis of the mounting rod 308. The friction blocks 3011 at three different positions simultaneously support the inner wall of the bottle cap, making the support of the bottle cap more stable. The outer wall of the friction block 3011 facing the outside of the lifting cylinder 304 is provided with anti-slip grooves to increase the friction force on the inner wall of the bottle cap and prevent the bottle cap from falling off from the lifting cylinder 304. The outer wall of the friction block 3011 on one side of the lifting cylinder 304 is fixedly provided with a protrusion to prevent the friction block 3011 from falling off from the lifting cylinder 304 as a whole. The top of the lifting cylinder 304 is provided with a ventilation hole 13. The ventilation hole 13 is provided so that when the lifting cylinder 304 moves up and down relative to the vertical rod 303, the lifting cylinder 304 is connected with the outside world to ensure the air pressure balance in the lifting cylinder 304.

[0028] Transparent glass 201 is fixedly installed on the front and back of the printing chamber 2 to penetrate the printing situation inside the printing chamber 2. Curtains 14 are fixedly installed at the left and right openings of the printing chamber 2 to reduce the amount of dye flying outside during the printing process.

[0029] The front and back of the conveying platform 1 are fixedly mounted with mounting brackets 2 9, and a spray head 10 is fixedly mounted on the top of the mounting brackets 2 9. The mounting brackets 2 9 and the spray head 10 are located in the spray painting chamber 2. The mounting brackets 2 9 are set on the front and back of the conveying platform 1, and are used to set the spray head 10 in the front and back directions of the conveying platform 1, and then spray the bottle caps from the front and back directions to ensure that the outer surface of the bottle caps can be pushed for full spray painting;

[0030] A mounting frame 7 is fixedly installed on the front of the conveyor 1, and a blower head 8 is fixedly installed on the top of the mounting frame 7. The mounting frame 7 and the blower head 8 are located in the inkjet printing chamber 2. After inkjet printing, the blower head 8 blows air to the bottle cap to accelerate the curing of the sprayed dye.

[0031] A rack 11 is fixedly installed on the top of the conveying platform 1. The rack 11 is located in the inkjet printing chamber 2. The rack 11 is meshed with a gear 12. The gear 12 is fixedly sleeved on the outer wall of the vertical rod 303. When the fixing mechanism 3 is driven by the conveying platform 1 to move, the gear 12 is pushed by the rack 11 to rotate, thereby driving the vertical rod 303 to rotate. The rotation of the vertical rod 303 drives the connecting plate 307 to rotate, thereby driving the installation rod 308 to rotate. The rotation of the installation rod 308 drives the hinge seat 309 to rotate, thereby driving the hinge rod 3010 to make a circular motion. The hinge rod 3010 drives the resistance block 3011 to make a circular motion, thereby driving the bottle cap to rotate, so that the bottle cap rotates while being sprayed, thereby ensuring that the bottle cap can be sprayed evenly;

[0032] The top of the spray painting chamber 2 is connected to a ventilation pipe 4, and the rear of the spray painting chamber 2 is provided with an air pump 5. The air inlet end of the air pump 5 is connected to the ventilation pipe 4. After the blowing head 8 blows air to the bottle cap after spraying, the air flow passes through the bottle cap to accelerate the drying of the dye. At this time, the air flow is extracted by the air pump 5 to prevent the air flow from flowing to the right, thereby causing the dye sprayed by the spray head 10 to be disturbed by the air flow;

[0033] The air outlet end of the vacuum pump 5 is connected to the purification box 6 through a pipeline. The top of the purification box 6 is connected to an exhaust pipe 601. The purification box 6 is provided to purify the airflow sucked in by the vacuum pump 5 to prevent the harmful odor of the dye volatilized in the airflow from being emitted into the air. The exhaust pipe 601 is provided to discharge the airflow purified by the purification box 6.

[0034] Working principle: When in use, press the bottle cap on the top of the lifting cylinder 304, and then press the bottle cap downward with force, so that the bottle cap pushes the lifting cylinder 304 to move downward, and the lifting cylinder 304 moves downward, driving the resistance block 3011 to move downward. During the downward movement of the resistance block 3011, it is pushed by the hinged rod 3010 and moves toward the outside of the lifting cylinder 304 until the resistance block 3011 contacts the inner wall of the bottle cap, propping up the bottle cap and ensuring that the central axis of the bottle cap coincides with the central axis of the lifting cylinder 304. At this time, the conveying platform 1 is turned on to drive the fixing mechanism 3 to move, and then drives the bottle cap to move. The bottle cap moves into the spray painting chamber 2. After the bottle cap passes the spray painting position of the spray head 10, the spray head 10 is turned on to spray the bottle cap. After the spray painting is completed, the bottle cap can be removed from the lifting cylinder 304 by pulling it upward. When replacing bottle caps of different specifications, it is only necessary to pull the lifting cylinder 304 upward so that the lifting cylinder 304 reaches the highest point before placing the bottle cap. During this process, the resistance block 3011 is pulled by the hinged rod 3010 and moves into the lifting cylinder 304. When the lifting cylinder 304 reaches the highest point, the length of the resistance block 3011 is the smallest.

[0035] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. An automatic spray painting device for the surface of a plastic bottle cap, comprising a conveying platform (1) and a spray painting chamber (2), characterized in that: The inkjet printing chamber (2) is covered at the middle section of the conveying platform (1), and a fixing mechanism (3) is fixedly installed on the conveying belt inside the conveying platform (1); The fixing mechanism (3) comprises a welding base (301), the welding base (301) is welded to the conveying platform (1), a disassembly base (302) is fixedly installed on the top of the welding base (301) by means of bolts, the top of the disassembly base (302) is rotatably connected to a vertical rod (303) via a bearing, a friction ring (306) is provided on the top sliding sleeve of the vertical rod (303), a lifting cylinder (304) is fixedly installed on the outer wall of the friction ring (306), a friction pattern (305) is provided on the outer wall of the vertical rod (303), a connecting disk (307) is fixedly installed on the top of the vertical rod (303), and the connecting disk (307) is located in the lifting cylinder (304), the top of the connecting plate (307) is fixedly installed with a mounting rod (308), the outer wall of the mounting rod (308) is fixedly installed with a hinge seat (309), the outer wall of the hinge seat (309) is hinged with a hinge rod (3010) through a pin shaft, the top of the hinge rod (3010) is hinged with a resistance block (3011) through a pin shaft, the resistance block (3011) is movable through the inner wall of the lifting cylinder (304), the top of the mounting rod (308) is fixedly installed with a spring (3012), the top of the spring (3012) is fixedly connected to the top inner wall of the lifting cylinder (304).

2. The automatic spray painting device for the surface of a plastic bottle cap according to claim 1, characterized in that: There are three abutment blocks (3011) in the lifting cylinder (304), and they are arranged in a circular array around the central axis of the mounting rod (308). The outer wall of the abutment block (3011) facing the outside of the lifting cylinder (304) is provided with anti-slip grooves. The outer wall of the abutment block (3011) located in the lifting cylinder (304) is fixed with a protrusion. The top of the lifting cylinder (304) is provided with a ventilation hole (13).

3. The automatic spray painting device for the surface of a plastic bottle cap according to claim 1, characterized in that: Transparent glass (201) is fixedly installed on the front and back of the inkjet printing chamber (2), and curtains (14) are fixedly installed on the left opening and right opening of the inkjet printing chamber (2).

4. The automatic spray painting device for the surface of a plastic bottle cap according to claim 1, characterized in that: The front and back sides of the conveying platform (1) are fixedly mounted with mounting frames (9), the top of the mounting frames (9) is fixedly mounted with a spray head (10), and the mounting frames (9) and the spray head (10) are located in the spray painting chamber (2).

5. The automatic spray painting device for the surface of a plastic bottle cap according to claim 1, characterized in that: A mounting frame (7) is fixedly mounted on the front of the conveying platform (1), and a blower head (8) is fixedly mounted on the top of the mounting frame (7). The mounting frame (7) and the blower head (8) are located in the inkjet printing chamber (2).

6. The automatic spray painting device for the surface of a plastic bottle cap according to claim 1, characterized in that: A rack (11) is fixedly installed on the top of the conveying platform (1), and the rack (11) is located in the inkjet printing chamber (2). The rack (11) is engaged with a gear (12), and the gear (12) is fixedly sleeved on the outer wall of the vertical rod (303).

7. The automatic spray painting device for the surface of a plastic bottle cap according to claim 1, characterized in that: The top of the inkjet printing chamber (2) is connected to a ventilation pipe (4), and an air extraction pump (5) is provided at the rear of the inkjet printing chamber (2), and the air inlet end of the air extraction pump (5) is connected to the ventilation pipe (4).

8. The automatic spray painting device for the surface of a plastic bottle cap according to claim 7, characterized in that: The air outlet end of the air extraction pump (5) is connected to a purification box (6) via a pipeline, and the top of the purification box (6) is connected to an exhaust pipe (601).

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