Production process of aerosol can manufactured by adopting spinning process

Abstract

The invention relates to the technical field of aerosol can production, and discloses a production process of an aerosol can manufactured by adopting a spinning process, which comprises the following steps: transversely punching and extruding raw materials to obtain a can blank; performing internal coating and printing on the can blank to obtain a can body; necking down the open end of the tank body to obtain a necking-down deformed tank body; spinning the opening end of the necking deformation tank body to obtain a neck forming tank body; a lining is assembled in the neck forming tank body through a negative pressure adsorption mechanism, and the aerosol tank is obtained. According to the invention, the necking-down aperture reduction and spinning forming shape are adopted during mouth forming, so that the original necking-down die is greatly reduced, the wear of the inner coating is reduced, the deflection of the opening end is avoided, and the wear of the bushing is avoided by adsorbing and assembling the bushing through negative pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosol can production, and particularly relates to an aerosol can production process manufactured by a spinning process. Background Art

[0002] An aerosol can is a disposable metal container for containing aerosol products. The existing production process of aerosol cans mainly includes processes such as extrusion molding, trimming, internal coating, cleaning, printing, lining installation, necking, etc.

[0003] For a gourd-shaped single-piece aerosol can and its production process and application described in the publication number CN112247005A, S1: Perform necking deformation on the can body along the opening end of the straight body of the single-piece aerosol can to obtain a necked-deformed can body;

[0004] S2: Perform flaring deformation on the can body along the opening end of the necked-deformed can body to obtain a necked can body;

[0005] S3: Perform necking deformation on the can body along the opening end of the necked can body to obtain a gourd-shaped can body;

[0006] S4: Complete the top curling of the opening end of the gourd-shaped can body by roll forming to obtain a gourd-shaped single-piece aerosol can.

[0007] The said step S1 includes:

[0008] Use N first necking dies to perform necking deformation on the can body in sequence until the outer diameter of the necked section of the can body reaches the target size to obtain a necked-deformed can body; where N is a positive integer.

[0009] The said step S3 includes:

[0010] Use K second necking dies to perform necking deformation on the can body in sequence until the outer diameter of the opening end of the can body reaches the target size; where K is a positive integer.

[0011] Based on the above technical features, the problems that occur are as follows: In the prior art, due to the properties of the metal in the original necking process, each set of dies can only complete a small amount of forming. Otherwise, defects such as folding, wrinkling, fracture, scratching, and mouth skew of the metal will occur due to excessive deformation. Therefore, a large number of necking dies are required for the forming of one pipe orifice. If a certain set of dies has problems, defective products will be produced; and there will also be problems such as the mandrel used during necking causing wear to the inner coating mouth and the installed lining.

[0012] Therefore, it is necessary to solve the above problems through an aerosol can production process manufactured by a spinning process. Summary of the Invention

[0013] The purpose of the present invention is to provide a production process for an aerosol can using a spinning process to solve the problems raised in the above background technology.

[0014] To achieve the above object, the present invention provides the following technical solution: a production process of an aerosol can manufactured by a spinning process, comprising the following steps:

[0015] S1, the raw material is subjected to horizontal punching, extrusion and cutting to obtain a can blank;

[0016] S2, the can blank is internally coated and printed to obtain the can body;

[0017] S3, the open end of the can body is shrunken to obtain a shrunken deformed can body;

[0018] S4, the open end of the shrinking deformed can body is spun to obtain a neck-shaped can body;

[0019] S5. The inside of the neck-molded tank body is equipped with a liner through a negative pressure adsorption mechanism to obtain an aerosol can.

[0020] Preferably, the step S4 includes using a spinning structure to perform a spinning process on the open end of the shrinking deformed can body until the open end of the shrinking deformed can body forms a neck of a target size, thereby obtaining a can body with a formed neck.

[0021] Preferably, the spinning structure includes a support that can move up and down, a rotatable core shaft and a rotatable cam; the shrinking deformation tank body is vertically placed on the support; the rotation center axis of the core shaft and the rotation center axis of the cam are both vertically placed; the core shaft is located inside the shrinking deformation tank body, and the cam is located outside the shrinking deformation tank body; the core shaft and the cam rotate to squeeze the open end of the shrinking deformation tank body, and the rotation directions of the core shaft and the cam are opposite.

[0022] Preferably, a spinning gap is formed between the core shaft and the cam, and the spinning gap matches the target size of the neck of the shrinking and deformed can body.

[0023] Preferably, the spinning structure further comprises a fixedly arranged longitudinal mounting seat, a transverse mounting seat and a platform;

[0024] The longitudinal mounting seat is provided with a first sliding seat which slides in a vertical direction and is slidably mounted on the upper limit position of the longitudinal mounting seat. A vertical fixed sleeve is rotatably mounted on the bottom of the first sliding seat, and the core shaft is coaxially fixed to the bottom of the sleeve. A first driving mechanism is mounted on the first sliding seat, and the first driving mechanism is transmission-connected to the fixed sleeve.

[0025] The transverse mounting seat is provided with a second sliding seat which slides in the horizontal direction and is slidably mounted on the upper limit position of the transverse mounting seat, a vertical camshaft is rotatably mounted on the second sliding seat, and the cam fixing sleeve is arranged on the camshaft; a second driving mechanism is mounted on the second sliding seat, and the second driving mechanism is connected to the camshaft in a transmission manner;

[0026] A cylinder is fixedly mounted on the platform, an output shaft of the cylinder is vertically upward and fixedly connected to a support seat, a support platform is rotatably arranged on the top of the support seat, and the support platform is located below the core shaft.

[0027] Preferably, the first driving mechanism includes a first motor, which is fixed on a first slide; a transmission shaft is rotatably mounted on the first slide, and the transmission shaft is coaxially and fixedly connected to a fixed sleeve; a first pulley is fixedly mounted on the output shaft and the transmission shaft of the first motor, and the two first pulleys are driven and sleeved in a transmission belt.

[0028] Preferably, the second driving mechanism comprises a second motor, and the second motor is fixed on a second slide; a second pulley is fixedly mounted on the output shaft and the camshaft of the second motor, and the two second pulleys are driven and sleeved in a belt.

[0029] Preferably, a tripod is fixedly arranged on the platform, and the cylinder is fixed on the tripod.

[0030] Preferably, the negative pressure adsorption mechanism includes a robot plug; the step S5 includes using the robot plug to negatively pressure adsorb the sleeve; then, the deflated sleeve is placed into the neck molded tank body from the open end of the neck molded tank body; thereafter, the robot plug blows air into the sleeve until the sleeve is restored to obtain an aerosol can.

[0031] Preferably, the bushing is made of a corrosion resistant material.

[0032] The technical effects and advantages of the present invention are as follows: the present invention adopts shrinking to reduce the diameter and spin forming shape during the mouth forming, which greatly reduces the original shrinking mold, reduces the wear of the inner coating, avoids the deflection of the opening end, and assembles the bushing through negative pressure adsorption to avoid the wear of the bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the production process of the present invention;

[0034] Figure 2 This is a schematic diagram of the opening end molding of the present invention;

[0035] Figure 3 It is a schematic diagram of the spinning structure of the present invention;

[0036] Figure 4 It is a schematic diagram of the spinning process of the present invention;

[0037] Figure 5 It is a schematic diagram of the bushing assembly of the present invention.

[0038] In the figure: 1. Vertical mounting base; 2. First sliding seat; 3. Transmission shaft; 4. First motor; 5. Transmission belt; 6. First pulley; 7. Cam; 8. Second motor; 9. Belt; 10. Second pulley; 11. Support frame; 12. Second sliding seat; 13. Horizontal mounting base; 14. Camshaft; 15. Cylinder; 16. Tripod; 17. Platform; 18. Support table; 19. Mandrel; 20. Fixed sleeve; 21. Manipulator plug. Detailed implementation manner

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] The present invention provides an aerosol can production process manufactured by a spinning process as Figures 1 to 5 shown, and as shown in the production process schematic diagram of Figure 1 , it includes the following steps:

[0041] S1. The raw material is subjected to transverse punching and extrusion to obtain a can blank. This process includes that the aluminum material for originally manufacturing the aerosol can passes through cup drawing and stretching in sequence to form a straight pipe, that is, the can blank. This belongs to the prior art and will not be elaborated here.

[0042] S2. The can blank is subjected to internal coating and printing to obtain a can body. Among them, the internal coating process is to coat an anti-corrosion protective lining on the inner wall of the straight pipe, and the printing process is to print brand logos, product information, and decorative designs, etc. on the outer wall of the straight pipe. The above processes belong to the prior art and will not be elaborated here.

[0043] S3. The open end of the can body is subjected to necking to obtain a necked deformed can body. Before necking, it is necessary to use the prior art to press the edge, trim the edge, and reduce the shoulder of the open end of the straight pipe in sequence. After the shoulder reduction is completed, the necking process is carried out using a necking die until the open end of the straight pipe is reduced to the target diameter, and finally the bottom is arched to obtain a necked deformed can body. The above processes belong to the prior art and will not be elaborated here.

[0044] S4. The open end of the necked deformed can body is subjected to spinning to obtain a neck-formed can body. This step includes using a spinning structure to perform spinning processing on the open end of the necked deformed can body until the open end of the necked deformed can body forms a neck with a target size, and a can body with a formed neck is obtained.

[0045] Specifically, the spinning structure includes a vertically movable supporting table 18, a rotatable mandrel 19, and a rotatable cam 7. The supporting table 18 is located below the mandrel 19, and the neck-reduced and deformed tank body is vertically placed on the supporting table 18. The rotation central axes of both the mandrel 19 and the cam 7 are vertical. The mandrel 19 is located inside the neck-reduced and deformed tank body, and the cam 7 is located outside the neck-reduced and deformed tank body.

[0046] A spinning gap is formed between the mandrel 19 and the cam 7, and the spinning gap matches the target size of the neck of the neck-reduced and deformed tank body. The mandrel 19 and the cam 7 rotate to squeeze the open end of the neck-reduced and deformed tank body, and the rotation directions of the mandrel 19 and the cam 7 are opposite.

[0047] The spinning structure further includes a longitudinal mounting seat 1, a transverse mounting seat 13, and a platform 17 fixedly arranged on the frame.

[0048] A first limiting sliding groove is vertically formed on the longitudinal mounting seat 1, and a first sliding seat 2 is slidably mounted in the first limiting sliding groove in a limited manner. A horizontal support plate is welded and fixed on the first sliding seat 2. A transmission shaft 3 is vertically arranged on the support plate. The transmission shaft 3 penetrates through the support plate and is rotatably connected to the support plate.

[0049] A first driving mechanism is mounted on the support plate, and the first driving mechanism is in transmission connection with the transmission shaft 3.

[0050] Specifically, the first driving mechanism includes a first motor 4, and the first motor 4 is fixed on the support plate. A first belt pulley 6 is fixedly sleeved on both the output shaft of the first motor 4 and the transmission shaft 3, and the two first belt pulleys 6 are in transmission connection inside a transmission belt 5.

[0051] The bottom end of the transmission shaft 3 is coaxially and fixedly connected to a fixed sleeve 20, and the mandrel 19 is coaxially inserted into the bottom of the fixed sleeve 20, and the mandrel 19 is fixedly connected to the fixed sleeve 20.

[0052] A triangular frame 16 is fixed on the platform 17, a cylinder 15 is fixedly mounted on the triangular frame 16, the output shaft of the cylinder 15 is vertically upward and fixedly connected to a support seat, and the supporting table 18 is rotatably mounted on the top of the support seat.

[0053] A second limiting sliding groove is horizontally formed on the transverse mounting seat 13, and a second sliding seat 12 is slidably mounted in the second limiting sliding groove in a limited manner. A support frame 11 is welded and fixed to the top of the second sliding seat 12. A camshaft 14 is vertically arranged on the support frame 11, and the camshaft 14 is rotatably connected to the support frame 11.

[0054] A second driving mechanism is mounted on the support frame 11, and the second driving mechanism is in transmission connection with the camshaft 14. The second driving mechanism includes a second motor 8, and the second motor 8 is fixed on the support frame 11. A second belt pulley 10 is fixedly sleeved on both the output shaft of the second motor 8 and the camshaft 14, and the two second belt pulleys 10 are in transmission connection inside a belt 9.

[0055] The cam 7 is fixedly sleeved on the camshaft 14.

[0056] The working principle of the spinning structure is as follows: Initially, the output shaft of the cylinder 15 is in a contracted state, the support table 18 is in a low position, and the first sliding seat 2 and the second sliding seat 12 are respectively at the upper limit position and the right end limit position. When the necked and deformed tank body reaches the support table 18, the output shaft of the cylinder 15 extends upward and drives the support table 18 to lift the necked and deformed tank body through the support seat until the position to be processed at the neck of the necked and deformed tank body is at the same height as the cam 7.

[0057] Then, the first sliding seat 2 slides downward until the mandrel 19 is inserted into the interior of the necked and deformed tank body. This process can be driven by a hydraulic cylinder to slide the first sliding seat 2, which belongs to the prior art and will not be elaborated here.

[0058] Subsequently, the second sliding seat 12 slides horizontally to the left and drives the support frame 11 to slide horizontally to the left. The support frame 11 drives the cam 7 to gradually approach until it presses against the neck of the necked and deformed tank body. This process can also be driven by an existing hydraulic cylinder to slide the second sliding seat 12.

[0059] Then, the cam 7 pushes the necked and deformed tank body to move, so that the inner wall of the necked and deformed tank body fits against the mandrel 19. Then, the first motor 4, the second motor 8, and the hydraulic cylinder driving the second sliding seat 12 are started, so that the mandrel 19 and the cam 7 rotate in opposite directions at the same speed and perform a spinning operation.

[0060] After spinning is completed, a tank body with a formed neck is obtained.

[0061] After that, the support table 18, the first sliding seat 2, and the second sliding seat 12 all return to their initial positions, and the tank body with a formed neck is transported out from the support table 18 to perform step S5.

[0062] Optionally, in actual production, the contour shape of the cam 7 can be designed according to the required spinning shape; the sliding distance of the second sliding seat 12 can be adjusted according to the required spinning depth; the stroke of the cylinder 15 can be adjusted according to the spinning position to adjust the height of the cam 7 relative to the necked and deformed tank body.

[0063] S5. A liner is assembled inside the tank body with a formed neck through a negative pressure adsorption mechanism to obtain an aerosol can.

[0064] Specifically, the negative pressure adsorption mechanism includes a manipulator plug 21. The manipulator plug 21 is an inverted conical platform and is fixedly installed on an existing manipulator. A gas flow channel is opened inside the manipulator plug 21. The gas flow channel penetrates through the manipulator plug 21, and the top opening of the gas flow channel is connected to the air port of the exhaust pump through a connecting tank.

[0065] Step S5 includes using the robot plug 21 to negatively adsorb the sleeve. During this process, the exhaust pump extracts the air inside the sleeve through the connecting pipe and the gas flow channel on the robot plug 21; at this time, the sleeve is deflated under the action of atmospheric pressure; then, the deflated sleeve is placed into the neck molded tank body from the open end of the neck molded tank body; thereafter, the exhaust pump blows air into the sleeve until the sleeve is restored, the sleeve assembly is completed, and the aerosol can is obtained.

[0066] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An aerosol can production process manufactured by a spinning process, characterized in that, It includes the following steps: S1. The raw materials are subjected to horizontal punching and extrusion to obtain can blanks; S2. The can blanks are internally coated and printed to obtain can bodies; S3. The open end of the can body is necked down to obtain a necked-down deformed can body; S4. The open end of the necked-down deformed can body is spun to obtain a can body with a formed neck; S5. A bushing is assembled inside the can body with a formed neck by a negative pressure adsorption mechanism to obtain an aerosol can.

2. The production process of an aerosol can manufactured by a spinning process according to claim 1, wherein: The step S4 includes using a spinning structure to spin the open end of the necked-down deformed can body until the open end of the necked-down deformed can body forms a neck with a target size, thereby obtaining a can body with a formed neck.

3. A production process for aerosol cans manufactured by a spinning process according to claim 2, characterized in that: The spinning structure includes a vertically movable support table (18), a rotatable mandrel (19), and a rotatable cam (7); the necked-down deformed can body is vertically placed on the support table (18); the rotation central axes of both the mandrel (19) and the cam (7) are vertical; the mandrel (19) is located inside the necked-down deformed can body, and the cam (7) is located outside the necked-down deformed can body; the mandrel (19) and the cam (7) rotate to squeeze the open end of the necked-down deformed can body, and the rotation directions of the mandrel (19) and the cam (7) are opposite.

4. A production process for aerosol cans manufactured by a spinning process according to claim 3, characterized in that: A spinning gap is formed between the mandrel (19) and the cam (7), and the spinning gap matches the target size of the neck of the necked-down deformed can body.

5. The production process of an aerosol can manufactured by a spinning process according to claim 3, characterized in that: The spinning structure further includes a fixedly arranged longitudinal mounting seat (1), a transverse mounting seat (13), and a platform (17); A first sliding seat (2) that slides vertically is installed on the longitudinal mounting seat (1) in a limited sliding manner. A vertically arranged fixed sleeve (20) is rotatably installed at the bottom of the first sliding seat (2), and the mandrel (19) is coaxially fixed to the bottom of the sleeve (20); a first driving mechanism is installed on the first sliding seat (2), and the first driving mechanism is drivingly connected to the fixed sleeve (20); A second sliding seat (12) that slides horizontally is installed on the transverse mounting seat (13) in a limited sliding manner. A vertically arranged camshaft (14) is rotatably installed on the second sliding seat (12), and the cam (7) is fixedly sleeved on the camshaft (14); a second driving mechanism is installed on the second sliding seat (12), and the second driving mechanism is drivingly connected to the camshaft (14); A cylinder (15) is fixedly installed on the platform (17). The output shaft of the cylinder (15) faces vertically upward and is fixedly connected to a support seat. The support table (18) is rotatably arranged on the top of the support seat, and the support table (18) is located below the mandrel (19).

6. The production process of an aerosol can manufactured by a spinning process according to claim 5, characterized in that: The first driving mechanism includes a first motor (4), and the first motor (4) is fixed on the first sliding seat (2); a transmission shaft (3) is rotatably installed on the first sliding seat (2), and the transmission shaft (3) is coaxially and fixedly connected to the fixed sleeve (20); a first belt pulley (6) is fixedly sleeved on both the output shaft of the first motor (4) and the transmission shaft (3), and the two first belt pulleys (6) are drivingly sleeved in a transmission belt (5).

7. A production process of an aerosol can manufactured by a spinning process according to claim 5, characterized in that: The second driving mechanism comprises a second motor (8), the second motor (8) being fixed on a second slide seat (12); a second pulley (10) is fixedly mounted on the output shaft of the second motor (8) and the cam shaft (14), and the two second pulleys (10) are transmission-connected in a belt (9).

8. A production process of an aerosol can manufactured by a spinning process according to claim 5, characterized in that: A tripod (16) is fixedly arranged on the platform (17), and the cylinder (15) is fixed on the tripod (16).

9. The production process of an aerosol can manufactured by a spinning process according to claim 1, characterized in that: The negative pressure adsorption mechanism comprises a manipulator plug (21), and the step S5 comprises using the manipulator plug (21) to negatively adsorb the sleeve; then, placing the deflated sleeve into the neck molded tank body from the open end of the neck molded tank body; thereafter, the manipulator plug (21) blows air into the sleeve until the sleeve is restored to its original shape, thereby obtaining an aerosol can.

10. A production process of an aerosol can manufactured by a spinning process, as claimed in claim 9, characterized in that: The bushing is made of corrosion resistant material.

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