Automatic assembling and cover pressing equipment for coating aerosol tank

Abstract

The invention discloses automatic assembling and capping equipment for coating aerosol cans, and belongs to the technical field of pressure vessel assembling and processing equipment, and the automatic assembling and capping equipment comprises a conveying line, a cover pressing mechanism, a cover pressing mechanism, a cover pressing mechanism and a cover pressing mechanism, and the conveying line extends on a frame in a preset direction and is used for bearing and conveying the aerosol cans; the guide blowing mechanism comprises guide wheels which are symmetrically arranged on the frame and rotate in friction with the aerosol tank, one end of each guide wheel is in transmission connection with the first transmission wheel through a first conveying belt, and the first transmission wheel is in transmission connection with the second transmission wheel through a second conveying belt; the first conveying belt and the second conveying belt are kept perpendicular to each other, one end of the second transmission wheel is fixed to a reciprocating lead screw, and a lead screw nut fixed to the first sliding block is arranged on the reciprocating lead screw in a spiral transmission mode. The technical problems that under the condition that a product is bumpy in the transportation process, a cover body is prone to being separated from an aerosol tank, the tank body cannot be effectively protected, and the safety of the automatic cover assembling and pressing process is affected can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure vessel assembly and processing equipment, and in particular relates to automatic assembly and capping equipment for paint aerosol cans. Background Art

[0002] An aerosol can is a complete pressure packaging container consisting of a valve, a container, and contents. When the valve is opened, the contents are released at a predetermined pressure in a controlled manner.

[0003] Paint aerosol is a special spray paint based on the principle of air pressure, also known as aerosol paint or hand-painted paint. After special treatment, this spray paint is filled into a small and portable tank under high pressure, allowing users to spray paint anytime and anywhere without polluting the surrounding environment. Paint aerosol is usually used in the fields of coating and painting. It is easy to use and does not require complicated operations. It can provide good coverage and uniform coating effects. In addition, due to the way aerosol is used, it is also suitable for painting details and hard-to-reach places. Therefore, it is widely used in home decoration, car painting and other fields.

[0004] When the cover on the aerosol can is being assembled, it is generally fixed by means of the elastic effect of the cover itself. However, if it is subject to bumps during transportation, the cover is easy to separate from the aerosol can, and the can body cannot be effectively protected, affecting the safety of the automated assembly and capping process. Therefore, the existing snap-on installation method is not conducive to the connection and fixation of structural parts, and the assembly function is relatively single, which is not conducive to the use and promotion of products. In addition, there is no corresponding cleaning component for the foreign particles on the surface of the aerosol can before the cover is assembled, which may cause obstruction and limit during the capping process, which is not conducive to the effective connection between the structural parts and reduces the product capping quality. Summary of the invention

[0005] The purpose of the present invention is to provide an automated assembly and capping device for paint aerosol cans to solve the technical problem that when the product is bumpy during transportation, the cover body is easily separated from the aerosol can, the can body cannot be effectively protected, and the safety of the automated assembly and capping process is affected.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Automatic assembly and capping equipment for paint aerosol cans, including:

[0008] A conveying line extending on the frame along a preset direction and used for carrying and conveying aerosol cans;

[0009] A guide blowing mechanism, the guide blowing mechanism comprising a guide wheel symmetrically arranged on the frame and frictionally rotating with the aerosol can, one end of the guide wheel and the first transmission wheel are connected to each other through a first conveyor belt, and the first transmission wheel and the second transmission wheel are connected to each other through a second conveyor belt;

[0010] Wherein, the first conveyor belt and the second conveyor belt are arranged vertically, and one end of the second transmission wheel is fixed on the reciprocating screw, and a screw nut fixed on the first slider is spirally driven on the reciprocating screw, and one end of the first slider is fixed on the first gear plate, and the outer wall of the first gear plate is meshed with a rotating tooth fixed on the rotating shaft, and both ends of the rotating shaft pass through the spray head and extend to the side plate, one end of the spray head is connected to the nozzle, and the other end is connected to the air pump through a corrugated hose;

[0011] The aerosol can capping mechanism comprises an inverted U-shaped frame mounted on a frame, the inverted U-shaped frame is provided with a material guide pipe connected to the cover body, and the aerosol can capping mechanism is used to connect the cover body to the aerosol can by rotating and covering.

[0012] Furthermore, the aerosol can capping mechanism also includes a cylinder fixed on an inverted U-shaped frame, the piston rod on the cylinder is connected to a pushing assembly extending to the inside of the material guide tube, the pushing assembly includes a pushing block installed on the piston rod, the pushing block is arranged in a ring shape, and the bottom end of the pushing block is integrally connected with an annular plate with an opening, a limiting groove is provided in the annular plate that is abutted against the cover body, and a rolling ball connected to the cover body is movably installed at the opening of the annular plate, and an inclined tube connected to the external transmission line is fixedly installed on one side of the material guide tube.

[0013] Furthermore, the piston rod on the cylinder and the vertical center axis of the push block are maintained on the same axis. As the piston rod moves downward, the cover body is subjected to the downward pushing force and the rotational connection of the ball, and the threaded engagement force on the aerosol can cooperates, so that the cover body and the aerosol can are rotationally engaged and fixed.

[0014] Furthermore, both upper and lower ends of the inner wall of the opening are provided with limiting parts connected to the rolling ball, and one side of the limiting part is provided with a rounded corner close to the rolling ball.

[0015] Furthermore, both ends of the piston rod on the cylinder and the second slider on the inverted U-shaped frame are connected by a swing rod, the second slider is connected with a strip groove matching it along the length direction of the inverted U-shaped frame, and one end of the second slider is connected to the fixed rod, the bottom of the fixed rod passes through the inverted U-shaped frame and extends to the second gear plate inside the cover body, the outer wall of the second gear plate is meshed with a third gear plate that moves in the opposite direction through the central gear, and the extension section of the third gear plate is connected to the clamping part through a bracket.

[0016] Furthermore, both ends of the swing rod are installed on the piston rod and the second slider by a rotational connection, the second gear plate and the third gear plate are connected with a slide groove along the inner wall of the cover body, and the upper and lower ends of the central gear are provided with a rotation groove connected to the side wall of the cover body, and the connection between the cover body and the inverted U-shaped frame is connected by locking and fixing with a positioning pin.

[0017] Furthermore, a clamping cavity connected to the aerosol can is provided between the clamping parts, and a slot is provided on the outer wall of the clamping part and fixedly connected to the bracket by insertion.

[0018] Furthermore, a thread groove is formed on the inner wall of the cover and the cover is connected to the aerosol can by a threaded connection.

[0019] Furthermore, a shielding plate connected to the frame is provided on the top of the reciprocating screw, and a sealing ring connected to the nozzle is provided on the edge of the outer wall of the rotating shaft.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] (1) A conveyor line is provided. The conveyor line can not only carry and transport the aerosol cans, but also can rotate the guide wheels by means of friction guide when the aerosol cans are transported, thereby enabling the subsequent guide blowing mechanism to work. No additional power source is required, which saves resources and is beneficial to environmental protection.

[0022] (2) A guide blowing mechanism is provided. The guide wheel can guide the aerosol can during friction rotation. At the same time, the reciprocating screw is rotated under the transmission action of the first conveyor belt and the second conveyor belt. With the help of the spiral transmission action, the first slider drives the first gear plate to move up and down. During the meshing transmission process between the first gear plate and the rotating gear, the rotating gear can be driven to reciprocate, so that the nozzle can be cyclically rotated in two directions by a certain angle to expand the range of the nozzle blowing, thereby improving the blowing and cleaning effect on the aerosol can to ensure that the structural connection of the aerosol can is kept clean before the cap is pressed, which is convenient for the subsequent automated assembly work, improves the stability of the structural connection, and is conducive to the promotion and application of the device.

[0023] (3) An aerosol can capping mechanism is provided, and the inclined tube is connected to the external transport line, so that the cap body can be continuously transported, and then the aerosol can slides into the guide tube with the help of its own gravity, and contacts and fits with the top of the aerosol can. At this time, the cylinder starts to move downward. When the push assembly contacts the cap body and is pushed downward, due to the rotation connection of the swing rod, the second sliders at both ends move outward, thereby driving the second gear plate to move together. With the help of the meshing transmission of the central gear, the third gear plate moving in the opposite direction drives the clamping plate to move in a centering and clamping manner, thereby ensuring that the aerosol can is clamped and fixed during the capping process to prevent shaking during the capping process. In addition, the bottom of the cap body is spirally meshed on the aerosol can, and the top of the cap body is rotatably connected to the ball in the annular plate. Therefore, when moving downward, the cap body can be effectively threaded and fixed by the rotational force. The design is reasonable, the structural integration performance is strong, the capping accuracy is high, and the product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 The structure diagram of the automatic assembly and capping equipment of the coating aerosol can of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 The structure diagram of the automatic assembly and capping equipment of the coating aerosol can of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 3 It is a front view of the automatic assembly and capping device for the paint aerosol can of the present invention;

[0028] Figure 4 It is a right side view of the automatic assembly and capping device for the paint aerosol can of the present invention;

[0029] Figure 5 The present invention Figure 1 A magnified image of point A;

[0030] Figure 6 The present invention Figure 2 The enlarged view of point B;

[0031] Figure 7 Schematic diagram of meshing transmission of the central gear of the present invention;

[0032] Figure 8It is a schematic diagram of the connection between the cover body and the aerosol can of the present invention;

[0033] Fig. 9 The present invention Figure 8 Enlarged view of point C.

[0034] 1. guide wheel; 2. first transmission wheel; 3. first conveyor belt; 4. second transmission wheel; 5. second conveyor belt; 6. reciprocating screw; 9. first slider; 10. screw nut; 11. first gear plate; 12. rotating gear; 13. nozzle; 14. nozzle; 15. corrugated hose; 16. air pump; 17. aerosol can capping mechanism; 18. inverted U-shaped frame; 19. cover body; 20. guide pipe; 21. cylinder; 22. push assembly; 23. push block; 24. opening; 25. annular plate; 26. rolling ball; 27. tilting tube; 28. limit part; 29. ​​fillet; 30. second slider; 31. swing rod; 32. fixing rod; 33. second gear plate; 34. center gear; 35. third gear plate; 36. clamping part. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Reference Manual Attached Figure 1 and Figure 2 As shown, the automatic assembly and capping equipment for paint aerosol cans includes:

[0037] Conveying line 1, which extends along a preset direction on the frame and is used to carry and convey aerosol cans;

[0038] The guide blowing mechanism 2 includes a guide wheel 3 which is symmetrically arranged on the frame and rotates with the aerosol can by friction, one end of the guide wheel 3 is connected to the first transmission wheel 4 by a first conveyor belt 5, and the first transmission wheel 4 and the second transmission wheel 6 are connected to each other by a second conveyor belt 7;

[0039] Among them, the first conveyor belt 5 and the second conveyor belt 7 are kept vertically arranged, and one end of the second transmission wheel 6 is fixed on the reciprocating screw 8, and the reciprocating screw 8 is spirally driven with a screw nut 10 fixed on the first slider 9, and one end of the first slider 9 is fixed on the first gear plate 11. The outer wall of the first gear plate 11 is meshed with a rotating tooth 12 fixed on the rotating shaft. Both ends of the rotating shaft pass through the nozzle 13 and extend to the side plate. One end of the nozzle 13 is connected to the nozzle 14, and the other end is connected to the air pump 16 through a corrugated hose 15.

[0040] The bottom end of the frame is mounted on the base plate through a column, thereby providing corresponding support force for the structural members on the frame. The conveyor line 1 is specifically started by a driver and drives the rotation of the transmission roller. The gears at the center of the transmission roller are connected by a chain transmission. Therefore, under the action of the driver, each transmission roller rotates synchronously, thereby achieving the purpose of carrying and conveying the aerosol can. The above-mentioned transmission components are conventional technical means for those skilled in the art and will not be described in detail here, so it does not affect the effective implementation of the technical solution of the present invention.

[0041] A conveyor line 1 is provided, which can not only carry and convey aerosol cans, but also can rotate the guide wheel 3 by means of friction guide when conveying the aerosol cans, thereby enabling the subsequent guide blowing mechanism 2 to work without providing an additional power source, saving resources and being environmentally friendly.

[0042] refer to Figure 2 , Figure 6 and Figure 7 The aerosol can capping mechanism 17 includes an inverted U-shaped frame 18 mounted on a frame, and a material guide pipe 20 connected to a cover body 19 is provided on the inverted U-shaped frame 18. The aerosol can capping mechanism 17 is used to connect the cover body 19 to the aerosol can by rotating the cover body 19.

[0043] Specifically, the aerosol can capping mechanism 17 also includes a cylinder 21 fixed on the inverted U-shaped frame 18, and the piston rod on the cylinder 21 is connected to a pushing assembly 22 extending to the inside of the guide tube 20. The pushing assembly 22 includes a pushing block 23 installed on the piston rod. The pushing block 23 is arranged in a ring shape, and the bottom end of the pushing block 23 is integrally connected with an annular plate 25 with an opening 24. A limiting groove is provided in the annular plate 25 for abutting against the cover body 19, and a rolling ball 26 connected to the cover body 19 is movably installed at the opening 24 on the annular plate 25, and an inclined tube 27 connected to the external transmission line is fixedly installed on one side of the guide tube 20.

[0044] Usually, during the capping process, the cover body 19 and the aerosol can are directly clamped and fixed by pressure. The present invention adopts a threaded press connection method for installation and fixing. In addition, during the threaded connection process, the aerosol can can be effectively clamped and fixed, thereby preventing the aerosol can from shaking during the connection process, effectively ensuring the stability of the capping process. At the same time, during the downward movement of the piston rod on the cylinder 21, the second sliders 30 at both ends will be driven by the swing rod 31 to move outward in the strip groove. In order to enable the clamping part 36 to realize the centering and inward movement of the aerosol can, a second gear plate 33 connected by a fixing rod 32 is provided on the second slider 30. When the second gear plate 33 and the second slider 30 keep moving synchronously, the central gear 34 can drive the meshing transmission of the third gear plate 35 and keep it moving in the opposite direction with the third gear plate 35. In this way, the clamping part 36 connected to the bracket can be effectively clamped in the center, so that the clamping part 36 is pressed against the outer wall of the aerosol can.

[0045] In addition, a limiting groove for the fixing rod 32 is provided on the inverted U-shaped frame 18, which can provide corresponding activity space for the movement of the fixing rod 32, and can also prevent the fixing rod 32 from deviating from its position during the movement, thereby ensuring the stability of the movement of the transmission parts. At the same time, the transmission ratio between the center gear 34 and the second gear plate 33 is kept the same as the transmission ratio between the center gear 34 and the third gear plate 35. Such a transmission ratio design method is conducive to ensuring that the mechanism can move stably, preventing the clamping part 36 from moving too fast and causing greater pressure damage to the aerosol can, thereby improving the protection effect on the product.

[0046] The aerosol can capping mechanism 17 is provided, and the inclined tube 27 is connected to the external transport line, so that the cap 19 can be continuously transported, and then the aerosol can slides into the guide tube 20 by its own gravity, and contacts and fits with the top of the aerosol can. At this time, the cylinder 21 starts to move downward. When the push assembly 22 contacts the cap 19 and pushes downward, due to the rotation connection of the swing rod 31, the second sliders 30 at both ends move outward, thereby driving the second gear plate 33 to move together, and with the help of the central gear 3 4, the meshing transmission effect makes the third gear plate 35 moving in the opposite direction drive the clamping plate to move in the centering clamping, so as to ensure that the aerosol can is clamped and fixed during the capping process to prevent shaking during the capping. In addition, the bottom of the cover body 19 is spirally meshed on the aerosol can, and the top of the cover body 19 is rotatably connected to the ball 26 in the annular plate 25. Therefore, when moving downward, the cover body 19 can be effectively threaded and fixed by the rotational force. The design is reasonable, the structural integration performance is strong, the capping accuracy is high, and the product quality is improved.

[0047] refer to Figure 8 and Fig. 9The piston rod on the cylinder 21 and the vertical center axis of the push block 23 remain on the same axis. As the piston rod moves downward, the cover body 19 is pushed downward and the rotational connection of the ball 26 cooperates with the threaded engagement force on the aerosol can, so that the cover body 19 is rotationally engaged and fixed with the aerosol can.

[0048] Specifically, both upper and lower ends of the inner wall of the opening 24 are provided with limiting portions 28 connected to the ball 26, and a rounded corner 29 is provided on one side of the limiting portion 28 near the ball 26. Both ends of the piston rod on the cylinder 21 and the second slider 30 on the inverted U-shaped frame 18 are connected by a swing rod 31. The second slider 30 is connected with a strip groove matched with it along the length direction of the inverted U-shaped frame 18, and one end of the second slider 30 is connected to the fixing rod 32. The bottom of the fixing rod 32 passes through the inverted U-shaped frame 18 and extends to the second gear plate 33 inside the cover body. The outer wall of the second gear plate 33 is meshed with a third gear plate 35 that moves in the opposite direction through the central gear 34, and the extension section of the third gear plate 35 is connected to the clamping portion 36 through a bracket.

[0049] The pushing block 23 on the pushing assembly 22 is arranged in a ring shape, which is mainly for adapting and connecting with the circular cover body 19 so that it can effectively contact and fit with the cover body 19. The opening 24 on the annular plate 25 not only provides a movement space for the ball 26, but also enables the cover body 19 to rotate by rolling friction, thereby effectively reducing friction, reducing friction damage, and increasing the service life of the device.

[0050] At the same time, the limiting portion 28 with rounded corners 29 on the opening 24 can shield and protect the rotation of the ball 26, preventing the ball 26 from leaving the rotating track. At the same time, the rounded corners 29 on the limiting portion 28 can increase the contact area of ​​the structural parts during collision contact, thereby reducing the pressure during collision by increasing the contact surface, thereby effectively protecting the product structure.

[0051] refer to Figure 1 , Figure 3 and Figure 4 Both ends of the swing rod 31 are installed on the piston rod and the second slider 30 by a rotational connection. The second gear plate 33 and the third gear plate 35 are connected with a slide groove along the inner wall of the cover body, and the upper and lower ends of the central gear 34 are provided with a rotation groove connected to the side wall of the cover body. The connection between the cover body and the inverted U-shaped frame 18 is connected by a positioning pin locking and fixing method.

[0052] Specifically, a clamping cavity connected to the aerosol tank is provided between the clamping parts 36, and a slot is provided on the outer wall of the clamping part 36 and is fixedly connected to the bracket by insertion, a threaded groove is provided on the inner wall of the cover body 19 and is connected to the aerosol tank by threaded connection, a baffle plate connected to the frame is provided on the top of the reciprocating screw 8, and a sealing ring connected to the nozzle 13 is provided on the edge of the outer wall of the rotating shaft.

[0053] Compared with the current press-fit fixing method, fixing by threaded connection can effectively connect and fix the structural parts, making it less likely for the structures to fall off, thereby ensuring the stability of the connection.

[0054] By extension, in the technical solution of the present invention, the guide wheel 3 can also be provided with a driving motor, so that the driving motor drives the rotation of the guide wheel 3, and a more stable rotation operation can be achieved. In addition, the first conveyor belt 5 and the second conveyor belt 7 are arranged on the guide blowing mechanism 2 to cooperate with the first transmission wheel 4 and the second transmission wheel 6 to play a role of transition guide. Compared with directly rotating the reciprocating screw 8 through the conveyor belt, the transmission force cannot be effectively transmitted only through the conveyor belt due to the long distance, and the vertical staggered arrangement of the first conveyor belt 5 and the second conveyor belt 7 can avoid motion interference between the transmission parts, thereby ensuring that the structural parts can perform stable transmission work, so that the reciprocating screw 8 can perform normal rotation work.

[0055] The corrugated hose 15 has a certain elastic expansion and contraction function, so when the rotating shaft drives the nozzle 13 to rotate back and forth, the corrugated hose 15 can be pulled to rotate together, and the normal rotation of the rotating shaft can be avoided. Both ends of the corrugated hose 15 can be installed on the air pump 16 and the nozzle 13 by threaded connection, which is convenient for personnel to operate and facilitates the installation and disassembly work between structural parts.

[0056] During the reciprocating rotation, the nozzle 13 can effectively blow and clean the surface of the aerosol can, especially the top, to prevent particulate impurities from adhering to the aerosol can, thereby affecting the subsequent threaded connection work, thereby reducing the efficiency and quality of the product's automated assembly and capping.

[0057] A guide blowing mechanism 2 is provided, and the guide wheel 3 can guide the aerosol can when it rotates by friction. At the same time, under the transmission action of the first conveyor belt 5 and the second conveyor belt 7, the reciprocating screw 8 is rotated. With the help of the spiral transmission action, the first slider 9 drives the first gear plate 11 to move up and down. During the meshing transmission process between the first gear plate 11 and the rotating gear 12, the rotating gear 12 can be driven to reciprocate, so that the nozzle 13 can be cyclically rotated in two directions by a certain angle to expand the activity range of the nozzle 14 for blowing, and the blowing work cannot be carried out comprehensively and evenly, thereby improving the blowing and cleaning effect on the aerosol can to ensure that the aerosol can maintains the cleanliness of the structural connection before the capping, facilitating the subsequent automated assembly work, improving the stability of the structural component connection, and facilitating the popularization and application of the device.

[0058] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0059] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Automatic assembly and capping equipment for paint aerosol cans, characterized in that: include: A conveying line (1), the conveying line (1) extending along a preset direction on the frame and used for carrying and conveying aerosol cans; A guide blowing mechanism (2), the guide blowing mechanism (2) comprising a guide wheel (3) symmetrically arranged on a frame and frictionally rotating with the aerosol can, one end of the guide wheel (3) and a first transmission wheel (4) are connected to each other through a first conveyor belt (5), and the first transmission wheel (4) and a second transmission wheel (6) are connected to each other through a second conveyor belt (7); The first conveyor belt (5) and the second conveyor belt (7) are arranged vertically, and one end of the second transmission wheel (6) is fixed on a reciprocating screw (8), and a screw nut (10) fixed on a first slider (9) is spirally driven on the reciprocating screw (8), and one end of the first slider (9) is fixed on a first gear plate (11), and the outer wall of the first gear plate (11) is meshed with a rotating tooth (12) fixed on a rotating shaft, and both ends of the rotating shaft pass through a spray head (13) and extend to a side plate, and one end of the spray head (13) is connected to a nozzle (14), and the other end is connected to an air pump (16) through a corrugated hose (15); An aerosol can capping mechanism (17) comprises an inverted U-shaped frame (18) mounted on a frame, a material guide pipe (20) connected to a cover body (19) is provided on the inverted U-shaped frame (18), and the aerosol can capping mechanism (17) is used to connect the cover body (19) to the aerosol can by rotating and capping.

2. The automatic assembly and capping equipment for paint aerosol cans according to claim 1, characterized in that: The aerosol can capping mechanism (17) further comprises a cylinder (21) fixed on the inverted U-shaped frame (18); a piston rod on the cylinder (21) is connected to a pushing assembly (22) extending into the interior of the material guide tube (20); the pushing assembly (22) comprises a pushing block (23) mounted on the piston rod; the pushing block (23) is arranged in a ring shape; and an annular plate (25) with an opening (24) is integrally formed and connected to the bottom end of the pushing block (23); a limiting groove is provided in the annular plate (25) and is abutted against the cover body (19); a rolling ball (26) connected to the cover body (19) is movably mounted at the opening (24) on the annular plate (25); and an inclined tube (27) connected to an external transmission line is fixedly mounted on one side of the material guide tube (20).

3. The automatic assembly and capping equipment for paint aerosol cans according to claim 2, characterized in that: The piston rod on the cylinder (21) and the vertical center axis of the push block (23) are kept on the same axis. As the piston rod moves downward, the cover body (19) is subjected to the downward pushing force and the rotational connection action of the rolling ball (26), and cooperates with the threaded engagement force on the aerosol can, so that the cover body (19) and the aerosol can are rotationally engaged and fixed.

4. The automatic assembly and capping equipment for paint aerosol cans according to claim 2, characterized in that: Limiting portions (28) connected to the rolling ball (26) are provided at both upper and lower ends of the inner wall of the opening (24), and a rounded corner (29) is provided on one side of the limiting portion (28) close to the rolling ball (26).

5. The automatic assembly and capping equipment for paint aerosol cans according to claim 2, characterized in that: The two ends of the piston rod on the cylinder (21) and the second slider (30) on the inverted U-shaped frame (18) are connected via a swing rod (31); the second slider (30) is connected with a strip groove matching the inverted U-shaped frame (18) along the length direction of the inverted U-shaped frame (18); one end of the second slider (30) is connected to a fixed rod (32); the bottom of the fixed rod (32) passes through the inverted U-shaped frame (18) and extends to a second gear plate (33) inside the cover body; the outer wall of the second gear plate (33) is meshed with a third gear plate (35) that moves in the opposite direction through a central gear (34); an extension section of the third gear plate (35) is connected to a clamping portion (36) via a bracket.

6. The automatic assembly and capping equipment for paint aerosol cans according to claim 5, characterized in that: Both ends of the swing rod (31) are mounted on the piston rod and the second slider (30) in a rotationally connected manner; the second gear plate (33) and the third gear plate (35) are connected with a slide groove along the inner wall of the cover body, and the upper and lower ends of the central gear (34) are provided with a rotation groove connected to the side wall of the cover body; the connection between the cover body and the inverted U-shaped frame (18) is connected in a locking and fixing manner by a positioning pin.

7. The automatic assembly and capping equipment for paint aerosol cans according to claim 5, characterized in that: A clamping cavity connected to the aerosol can is provided between the clamping parts (36), and a slot is provided on the outer wall of the clamping part (36) and is fixedly connected to the bracket by insertion.

8. The automatic assembly and capping equipment for paint aerosol cans according to claim 1, characterized in that: The inner wall of the cover body (19) is provided with a thread groove and is connected to the aerosol can by means of a threaded connection.

9. The automatic assembly and capping equipment for paint aerosol cans according to claim 1, characterized in that: A shielding plate connected to the frame is provided on the top of the reciprocating screw (8), and a sealing ring connected to the nozzle (13) is provided on the edge of the outer wall of the rotating shaft.

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