High-efficiency metal can manufacturing process and manufacturing system

Abstract

The high-efficiency metal can manufacturing process comprises the following steps that S1, a template is cut out from a metal raw material plate, the template comprises a plurality of side plates used for forming a can body in an enclosing mode and an end plate used for forming a can bottom, and the end plate is integrally connected with one of the side plates; s2, the end plate and the side plate are bent for the first time, so that a tank containing cavity with openings in the two faces is defined by the end plate and the side plate; s3, the side plate is bent again, so that the end plate and the side plate define a tank body containing cavity with an opening in one face; and S4, the end plates and the side plates are connected in a welded mode, and the side plates located at the two ends are connected in a welded mode to form the tank body. According to the high-efficiency metal can manufacturing process and system, the can body and the can bottom can be machined at a time, the working procedures are reduced, and the machining efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal can processing, in particular to a high-efficiency metal can manufacturing process and a manufacturing system. Background Art

[0002] Metal cans are a type of container with a wide range of applications. Usually, some metal cans will directly hold items, mainly used to hold liquids or granular solids, such as beverages or milk powder; some metal cans will indirectly hold items, and the items themselves are sealed and packed in packaging bags and then put into metal cans. At this time, the metal cans are used as outer packaging, such as tea packaging. Metal cans as packaging structures are mainly made of tinplate, and usually the can body, can bottom and can lid are manufactured separately. The can body, can bottom and can lid are then assembled. The whole process requires multiple material transfers and multiple connection processes. For metal cans used as external packaging materials, the sealing performance requirements are not high, and the existing manufacturing process is too inefficient. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a high-efficiency metal can manufacturing process and manufacturing system, which can process the can body and the can bottom at one time, saving working steps and effectively improving the processing efficiency.

[0004] In order to achieve the above object, the specific scheme adopted by the present invention is: A highly efficient metal can manufacturing process comprises the following steps: S1: Cutting a template from a metal raw material plate, wherein the template includes a plurality of side plates for enclosing and forming a can body and an end plate for forming a can bottom, and the end plate is integrally connected to one of the side plates; S2: initially bending the end plate and the side plate so that the end plate and the side plate enclose a tank body cavity with openings on two sides; S3: bending the side plate again so that the end plate and the side plate enclose a tank cavity with an opening on one side; S4: The end plate is connected to the side plate by welding, and the side plates at both ends are connected by welding to form the tank body.

[0005] Preferably, in step S1, the template includes four side panels, and the four side panels are distributed along a straight line; In step S4, the two side plates at both ends are welded and connected to form the tank body.

[0006] Preferably, in step S1, the template further includes three end connecting pieces and one side connecting piece, the end connecting pieces are integrally connected to the end plates, and the side connecting piece is integrally connected to one of the side plates located at the end.

[0007] Preferably, in step S4, the end connecting piece is welded to the three side plates accordingly so that the end plates form the tank bottom, and the side connecting piece is welded to another side plate located at the end.

[0008] A highly efficient metal can manufacturing system, comprising: A cutting machine, used for cutting the template from the metal raw material plate; A loading conveyor, used for transporting the template; A molding mechanism, used for processing the template based on the process to obtain the can body with the can bottom; The unloading conveyor is used for transporting the tank body.

[0009] Preferably, the forming mechanism includes a bending machine for bending the template, a welding machine for welding the template, and a template transfer machine for transferring the template to the bending machine and the welding machine.

[0010] Preferably, the template transfer machine includes a main support plate, one side of the main support plate is rotatably connected to a rotating plate, the other side of the main support plate is provided with a rotary drive for driving the rotating plate to rotate, the rotating plate is vertically fixedly connected to a plurality of connecting rods, the connecting rods are fixedly connected to a template transfer block, and the template transfer block is provided with at least one template attractor for attracting the template so that the template moves with the template transfer block.

[0011] Preferably, a material discharge cylinder is fixedly provided on the connecting rod, and a channel is opened on the template transfer block, and the piston rod of the material discharge cylinder can pass through the channel.

[0012] Preferably, the loading conveyor and the unloading conveyor are both arranged horizontally, and the main support plate is arranged vertically.

[0013] Preferably, the bending machine includes a first base plate and a second base plate which are perpendicular to each other and fixedly connected, the first base plate being fixedly connected to two second side bending cylinders, the second side bending cylinders being driven and connected to a second side bending pin for initially bending the side plate, the second base plate being fixedly connected to an end bending cylinder and a first side bending cylinder, the end bending cylinder being driven and connected to an end bending pin for initially bending the end plate, and the first side bending cylinder being driven and connected to a first side bending pin for bending the side plate again.

[0014] The metal can manufacturing process of the present invention can process the can body and the can bottom at one time. Compared with the existing processing method of separately processing the can body and the can bottom and then transferring, docking and connecting them, it saves working steps and effectively improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] Figure 1 It is a schematic diagram of the structure of the template; Figure 2 It is a schematic diagram of the state of the template after the initial bending; Figure 3 This is a schematic diagram of the state after the template is bent again; Figure 4 It is a structural diagram of the manufacturing system; Figure 5 It is a schematic diagram of the main structure of the bending machine.

[0017] Figure markings: 1-side plate, 2-side connecting plate, 3-end plate, 4-end connecting plate, 5-tank cavity, 6-main support plate, 7-rotation drive, 8-rotating plate, 9-connecting rod, 10-unloading cylinder, 11-template transfer block, 12-channel, 13-template sucker, 14-loading conveyor, 15-welding machine, 16-unloading conveyor, 17-bending machine, 18-first substrate, 19-second substrate, 20-end bending cylinder, 21-first side bending cylinder, 22-first side bending head, 23-end bending head, 24-second side bending head, 25-second side bending cylinder. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1 to 5 , Figure 1 It is a schematic diagram of the template structure. Figure 2 This is a schematic diagram of the state of the template after the initial bending. Figure 3 This is a schematic diagram of the state after the template is bent again. Figure 4 It is a structural diagram of the manufacturing system. Figure 5 It is a schematic diagram of the main structure of the bending machine.

[0020] A highly efficient metal can manufacturing process comprises the following steps: S1: Cut a template from a metal raw material sheet, the template includes a plurality of side panels 1 for enclosing a can body and an end panel 3 for forming a can bottom, and the end panel 3 is integrally connected to one of the side panels 1. The number of side panels 1 can be determined according to the shape of the metal can to be processed, and ensure that all side panels 1 can be distributed along a straight line and connected end to end to form a cylindrical can body, so that the end panel 3 can seal one end of the can body to form a can bottom. As a preferred solution, in S1, the template includes four side panels 1, and the four side panels 1 are distributed along a straight line, and the four side panels 1 enclose a square cylindrical can body, and accordingly, the end panel 3 is set as a rectangular panel.

[0021] S2: Initially bend the end plate 3 and the side plate 1 so that the end plate 3 and the side plate 1 enclose a tank cavity 5 with two openings. Specifically, first bend the first and third of the four side plates 1 in the same direction so that the first and third side plates 1 are perpendicular to the second, and bend the end plate 3 so that it is perpendicular to all the side plates 1. The result is as follows: Figure 2 shown.

[0022] S3: Bend the side plate 1 again, so that the end plate 3 and the side plate 1 enclose a tank cavity 5 with an opening on one side. Specifically, the first and the fourth of the four side plates 1 are in contact, and the first and the third are parallel to each other, and the second and the fourth are parallel to each other. The four side plates 1 together form a square cylindrical tank body, and the end plate 3 is perpendicular to and in contact with the four side plates 1, forming a tank cavity 5 with only one opening. The result is as follows: Figure 3 shown.

[0023] S4: The end plate 3 is welded to the side plate 1, and the side plates 1 at both ends are welded to form a tank body. More specifically, in S4, the two side plates 1 at both ends are welded to form a tank body.

[0024] The metal can manufacturing process of the present invention can process the can body and the can bottom at one time, which saves steps and effectively improves the processing efficiency compared with the existing processing method of processing the can body and the can bottom separately and then transferring, docking and connecting them. It should be noted that the present invention is suitable for metal cans with low requirements for sealing performance, that is, the product itself has other sealed packaging such as plastic bags, and only uses the metal can as the outer layer of the packaging structure with protective function.

[0025] Because the end plate 3 needs to be welded to the side plate 1, and the first and fourth side plates 1 also need to be welded, in order to facilitate welding, in S1, the template also includes three end connecting pieces 4 and one side connecting piece 2, the end connecting piece 4 is integrally connected to the end plate 3, and the side connecting piece 2 is integrally connected to one of the side plates 1 located at the end. The end connecting piece 4 is used to connect the end plate 3 and the side plate 1, and the side connecting piece 2 is used to connect the first and fourth side plates 1, that is, in S4, the end connecting piece 4 is correspondingly welded to the three side plates 1 so that the end plate 3 forms the tank bottom, and the side connecting piece 2 is welded to another side plate 1 located at the end.

[0026] The present invention further provides a highly efficient metal can manufacturing system, comprising a cutting machine, a feeding conveyor 14, a forming mechanism and a discharging conveyor 16. The cutting machine is used to cut a template from a metal raw material sheet, the feeding conveyor 14 is used to transport the template, the forming mechanism is used to process the template based on the process to obtain a can body with a can bottom, and the discharging conveyor 16 is used to transport the can body.

[0027] When the manufacturing system is used to implement the above manufacturing process, the metal raw material sheet is first cut into a template using a cutting machine, and then the template is conveyed to the forming mechanism using the feeding conveyor 14, and the template is processed into a can body with a can bottom using the forming mechanism, and finally, the processed can body with a can bottom is conveyed to other subsequent processing equipment and processes using the unloading conveyor 16. Because the processed can body with a can bottom needs to be closed with a can cover, and before closing, the product needs to be loaded into the can body, the process of product loading and can cover closing is completed by other equipment and processes, which are conventional technologies in the field and will not be repeated here. In the system of the present invention, the cutting machine can adopt the existing stamping and cutting equipment, the loading conveyor 14 and the unloading conveyor 16 can both adopt the existing belt conveyors, and a first positioning component for positioning the template can be arranged on the loading conveyor 14, and the first positioning component can include a plurality of first positioning blocks that can be fitted on the edge of the template, and a second positioning component for positioning the tank body can be arranged on the unloading conveyor 16, and the second positioning component can include a plurality of second positioning blocks that can be fitted on the edge of the tank body, so as to improve the positioning accuracy and ensure the overall processing accuracy.

[0028] Because the forming and connection process of the tank body and the tank bottom mainly includes bending and welding, the forming mechanism includes a bending machine 17 for bending the template, a welding machine 15 for welding the template, and a template transfer machine for transferring the template to the bending machine 17 and the welding machine 15. After the template is transported to the position of the forming mechanism by the feeding conveyor 14, the template is grasped by the template transfer machine and transferred to the position of the bending machine 17, and the bending machine 17 is used to complete the initial bending and the re-bending, and then the template transfer machine continues to transfer the bent template to the position of the welding machine 15, and the welding machine 15 is used to complete the welding between the end plate 3 and the side plate 1 and the welding of the first and fourth side plates 1 to obtain a tank body with a tank bottom, and finally the template transfer machine is used to transfer the processed tank body to the unloading conveyor 16. The welding machine 15 can use existing welding equipment, which belongs to the prior art in this field and will not be repeated here.

[0029] Because the template transfer machine needs to transfer the template in multiple positions, on this basis, in order to simplify the structure of the template transfer machine, the template transfer machine includes a main support plate 6, one side of the main support plate 6 is rotatably connected to a rotating plate 8, and the other side of the main support plate 6 is provided with a rotary driver 7 for driving the rotating plate 8 to rotate, and the rotating plate 8 is vertically fixedly connected to multiple connecting rods 9, and the connecting rods 9 are fixedly connected to a template transfer block 11, and the template transfer block 11 is provided with at least one template suction device 13 for attracting the template so that the template moves with the template transfer block 11. The rotary driver 7 can drive the rotating plate 8 to rotate, and then the rotating plate 8 drives the connecting rods 9 and the template transfer block 11 to move to different positions to realize the transfer process of the template. The template transfer block 11 grabs the template by suction, and the structure is simpler and will not cause damage to the template. If the metal raw material sheet used is a conventional tinplate, the template suction device 13 can be an electromagnet or a vacuum suction cup, which are conventional components and will not be repeated here. The rotary driver 7 can include a drive motor and a reducer, which is also a mature existing technology. On the basis of the first positioning assembly being arranged on the feeding conveyor 14, the grasping accuracy of the template sucker 13 can also be ensured, and the grasped template will not be skewed, thereby preventing the wrong shape from occurring after bending.

[0030] After two bendings by the bending machine, the formed tank body with a tank bottom is actually mounted on the template transfer block 11. The friction between the template transfer block 11 and the tank body may make it difficult to separate the tank body. In addition, in order to facilitate the use of the loading conveyor 14 to transport the template, it is best to set the loading conveyor 14 horizontally to avoid the template sliding on the loading conveyor 14 and causing position displacement. This requires that the template transfer block 11 must also be set horizontally to facilitate attracting the template, which in turn causes the tank body to be unable to be separated from the template transfer block 11 under the action of gravity. In order to solve this problem, a unloading cylinder 10 is fixedly arranged on the connecting rod 9, and a channel 12 is opened on the template transfer block 11, and the piston rod of the unloading cylinder 10 can pass through the channel 12. After the tank body with the tank bottom is processed, the template transfer block 11 is transferred to the top of the unloading conveyor 16, and then the unloading cylinder 10 is activated, and its piston rod passes through the channel 12 and presses on the tank bottom, thereby pushing the tank bottom and the tank body to move, until the tank body falls off the template transfer block 11 and falls onto the unloading conveyor 16, completing the unloading. On this basis, the loading conveyor 14 and the unloading conveyor 16 are both arranged horizontally, and the main support plate 6 is arranged vertically.

[0031] The main bending process of the bending machine 17 includes the initial bending of the side plate 1 and the end plate 3 and the re-bending of the side plate 1. In order to realize the two bending processes, the bending machine 17 includes a first base plate 18 and a second base plate 19 which are perpendicular to each other and fixedly connected. The first base plate 18 is fixedly connected with two second side bending cylinders 25, and the second side bending cylinder 25 is driven and connected with a second side bending head 24 for initial bending of the side plate 1. The second base plate 19 is fixedly connected with an end bending cylinder 20 and a first side bending cylinder 21. The end bending cylinder 20 is driven and connected with an end bending head 23 for initial bending of the end plate 3, and the first side bending cylinder 21 is driven and connected with a first side bending head 22 for re-bending the side plate 1. During the initial bending, the two second side bending cylinders 25 are actuated, and the end bending cylinder 20 is actuated. During the re-bending, the first side bending cylinder 21 is actuated.

[0032] In a specific embodiment of the manufacturing system of the present invention, it includes a cutting machine, a loading conveyor 14 , a forming mechanism and a unloading conveyor 16 .The forming mechanism is used to process the template based on the process to obtain a tank body with a tank bottom. The forming mechanism includes a bending machine 17 for bending the template, a welding machine 15 for welding the template, and a template transfer machine for transferring the template to the bending machine 17 and the welding machine 15. After the template is transported to the position of the forming mechanism by the feeding conveyor 14, the template transfer machine is used to grab the template and transfer it to the position of the bending machine 17. The bending machine 17 is used to complete the initial bending and the second bending. After that, the template transfer machine continues to transfer the bent template to the position of the welding machine 15. The welding machine 15 is used to complete the welding between the end plate 3 and the side plate 1 and the welding of the first and fourth side plates 1 to obtain a tank body with a tank bottom. Finally, the processed template is transferred by the template transfer machine. The can body is transferred to the unloading conveyor 16. The template transfer machine includes a main support plate 6. One side of the main support plate 6 is rotatably connected to a rotating plate 8. The other side of the main support plate 6 is provided with a rotary drive 7 for driving the rotating plate 8 to rotate. The rotating plate 8 is vertically fixedly connected to a plurality of connecting rods 9. The connecting rods 9 are fixedly connected to a template transfer block 11. The template transfer block 11 is provided with at least one template suction device 13 for attracting the template so that the template moves with the template transfer block 11. The rotary drive 7 can drive the rotating plate 8 to rotate, and then the rotating plate 8 drives the connecting rod 9 and the template transfer block 11 to move to different positions to realize the transfer process of the template. The template transfer block 11 grabs the template by suction, and the structure is simpler. A material unloading cylinder 10 is arranged, and a channel 12 is opened on the template transfer block 11. The piston rod of the material unloading cylinder 10 can pass through the channel 12. After the processing of the tank body with the tank bottom is completed, the template transfer block 11 is transferred to the top of the material unloading conveyor 16, and then the material unloading cylinder 10 is actuated, and its piston rod passes through the channel 12 and presses on the tank bottom, thereby pushing the tank bottom and the tank body to move, until the tank body falls from the template transfer block 11 and falls onto the material unloading conveyor 16, completing the material unloading. On this basis, the material loading conveyor 14 and the material unloading conveyor 16 are both arranged horizontally, and the main support plate 6 is arranged vertically. The main bending process of the bending machine 17 includes the initial bending of the side plate 1 and the end plate 3 and the re-bending of the side plate 1. In order to achieve two bending processes The bending machine 17 includes a first base plate 18 and a second base plate 19 which are perpendicular to each other and fixedly connected. The first base plate 18 is fixedly connected with two second side bending cylinders 25. The second side bending cylinder 25 is driven and connected with a second side bending head 24 for initially bending the side plate 1. The second base plate 19 is fixedly connected with an end bending cylinder 20 and a first side bending cylinder 21. The end bending cylinder 20 is driven and connected with an end bending head 23 for initially bending the end plate 3. The first side bending cylinder 21 is driven and connected with a first side bending head 22 for bending the side plate 1 again. During the initial bending, the two second side bending cylinders 25 are actuated and the end bending cylinder 20 is actuated. During the second bending, the first side bending cylinder 21 is actuated.

[0033] The unloading conveyor 16 is used to transport the tank body. A first positioning component for positioning the template is arranged on the loading conveyor 14. The first positioning component may include a plurality of first positioning blocks that can be fitted on the edge of the template. A second positioning component for positioning the tank body may be arranged on the unloading conveyor 16. The second positioning component may include a plurality of second positioning blocks that can be fitted on the edge of the tank body to improve the positioning accuracy and ensure the overall processing accuracy.

[0034] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0035] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A highly efficient metal can manufacturing process, characterized in that: The steps include: S1: cutting a template from a metal raw material plate, the template comprising a plurality of side plates (1) for enclosing and forming a can body and an end plate (3) for forming a can bottom, and the end plate (3) is integrally connected to one of the side plates (1); S2: initially bending the end plate (3) and the side plate (1) so that the end plate (3) and the side plate (1) enclose a tank body cavity (5) with openings on two sides; S3: bending the side plate (1) again so that the end plate (3) and the side plate (1) enclose a tank cavity (5) having an opening on one side; S4: The end plate (3) is welded to the side plate (1), and the side plates (1) at both ends are welded to form the tank body.

2. A high-efficiency metal can manufacturing process as claimed in claim 1, characterized in that: In step S1, the template comprises four side plates (1), and the four side plates (1) are distributed along a straight line; in step S4, the two side plates (1) located at the two ends are welded and connected to form the tank body.

3. A high-efficiency metal can manufacturing process as claimed in claim 2, characterized in that: In step S1, the template further comprises three end connecting pieces (4) and one side connecting piece (2), wherein the end connecting piece (4) is integrally connected to the end plate (3), and the side connecting piece (2) is integrally connected to one of the side plates (1) located at the end.

4. A high-efficiency metal can manufacturing process as claimed in claim 3, characterized in that: In step S4, the end connecting piece (4) is correspondingly connected to the three side plates (1) by welding so that the end plate (3) forms the tank bottom, and the side connecting piece (2) is connected to another side plate (1) located at the end by welding.

5. A manufacturing system for a highly efficient metal can manufacturing process as claimed in claim 1, characterized in that: It includes: a cutting machine, used for cutting the template from the metal raw material plate; A loading conveyor (14) for transporting the template; A molding mechanism, used for processing the template based on the process to obtain the can body with the can bottom; The unloading conveyor (16) is used to transport the tank body.

6. The manufacturing system according to claim 5, characterized in that The forming mechanism comprises a bending machine (17) for bending the template, a welding machine (15) for welding the template, and a template transfer machine for transferring the template to the bending machine and the welding machine (15).

7. The manufacturing system according to claim 6, characterized in that: The template transfer machine comprises a main support plate (6), one side of the main support plate (6) is rotatably connected to a rotating plate (8), the other side of the main support plate (6) is provided with a rotary drive (7) for driving the rotating plate (8) to rotate, the rotating plate (8) is vertically fixedly connected to a plurality of connecting rods (9), the connecting rods (9) are fixedly connected to a template transfer block (11), and the template transfer block (11) is provided with at least one template attractor (13) for attracting the template so that the template moves along with the template transfer block (11).

8. The manufacturing system according to claim 7, characterized in that: A material discharge cylinder (10) is fixedly arranged on the connecting rod (9), and a channel (12) is provided on the template transfer block (11), and a piston rod of the material discharge cylinder (10) can pass through the channel (12).

9. The manufacturing system according to claim 7, characterized in that: The loading conveyor (14) and the unloading conveyor (16) are both arranged horizontally, and the main support plate (6) is arranged vertically.

10. The manufacturing system according to claim 6, characterized in that The bending machine (17) comprises a first base plate (18) and a second base plate (19) which are perpendicular to each other and fixedly connected. The first base plate (18) is fixedly connected to two second side bending cylinders (25). The second side bending cylinders (25) are driven and connected to a second side bending pin (24) for initially bending the side plate (1). The second base plate (19) is fixedly connected to an end bending cylinder (20) and a first side bending cylinder (21). The end bending cylinder (20) is driven and connected to an end bending pin (23) for initially bending the end plate (3). The first side bending cylinder (21) is driven and connected to a first side bending pin (22) for bending the side plate (1) again.

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