Pop can body forming device

Abstract

The utility model discloses a zip-top can body forming device, which relates to the technical field of zip-top can production, and comprises a machine body, two forming stations symmetrically distributed on the machine body, a guide assembly, a feeding assembly, a position and a female die part, the guide assembly is arranged on the machine body and is used for supporting and guiding the sliding of a sliding piece, and the position is arranged on the machine body and is positioned on the outer side of a punch. The female die part is installed on the machine body and located on the outer side of the feeding assembly, the bottom die part is installed on the machine body and located on the outer side of the female die part, the discharging plate is arranged on the female die part, and the bearing groove is installed on the machine body and located below the blanking gap. Two times of stretching forming operation can be achieved by enabling the telescopic end of the hydraulic cylinder to stretch and retract back and forth in a reciprocating mode, operation of the driving assembly can be fully utilized, the machining efficiency is greatly improved, the automation degree and the machining precision of the device are high, and the production cost is low. And the quality and the qualified rate of formed finished products can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of can production, in particular to a can body forming device. Background Art

[0002] Aluminum cans have the advantages of light weight, good airtightness, excellent performance, and not easy to break. They are widely used in packaging materials for beverages such as beer, carbonated beverages, and juices. The body of the aluminum can needs to go through processes such as conveying aluminum coils, unwinding coils, punching cups, stretching, trimming and cleaning, printing and decoration, neck shrinking and flanging, and testing and packaging. Among them, punching cups and stretching are the most critical. Cup punching is to pre-punch the round aluminum sheet into a cup shape through the cup punching equipment, and then enter the stretching forming process. This process requires the use of stretching forming equipment and a stretching die to stretch the cup-shaped workpiece into a can body shape to achieve the can body forming.

[0003] During the specific stretching and forming process, the punch needs to be pushed by the driving assembly so that the punch pushes the cup-shaped workpiece into the die cavity. At this time, the cup-shaped workpiece is stretched into a can shape with the cooperation of the die cavity and the bottom die, and then the punch is pulled back to its original position by the driving assembly, and the molded can body is demolded and the cup-shaped workpiece is loaded at the same time, and then the next stretching process is carried out by the driving assembly. It is not difficult to see from the above forming process that each reciprocating drive of the driving assembly can only perform one stretching, so that the driving assembly is in an idle running state during the return and reset process, and the next stretching work can only be performed after it is reset in place, so that the operation of the driving assembly is not fully utilized, resulting in a waste of corresponding resources. Therefore, there is still room for improvement. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a can body forming device for an easy-pull can, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a can body forming device, including a machine body and two forming stations symmetrically distributed on the machine body, and also including: a sliding member, arranged between the two forming stations; a guide assembly, arranged on the machine body, used to support and guide the sliding of the sliding member; a hydraulic cylinder, arranged on the machine body, used to drive the sliding member to slide;

[0008] The forming station includes: a punch, mounted on a slide, for punching the workpiece;

[0009] A feeding assembly is installed on the machine body at a position outside the punch, and is used to feed the cup-shaped workpiece; a die portion is installed on the machine body at a position outside the feeding assembly, and is used to cooperate with the punch to stretch the cup-shaped workpiece into a can shape; a bottom die portion is installed on the machine body at a position outside the die portion, and is used to stamp the bottom of the can-shaped workpiece, and a blanking gap is left between the die portion and the bottom die portion; a stripper plate is provided on the die portion, and is used to demold the formed can workpiece; a receiving groove is installed on the machine body and is located below the blanking gap, and is used to guide the processed can body to the outside.

[0010] Optionally, the guide assembly includes: a stretching guide rail installed on the machine body at a position below the sliding member, and the length direction of the stretching guide rail is parallel to the stretching forming direction; a slider installed on the stretching guide rail and connected to the sliding member so that the sliding member can slide along the length direction of the stretching guide rail.

[0011] Optionally, the feeding assembly includes: a feeding guide rail, which is a square tube type, and its inner cavity is used to hold the cup-shaped workpiece and transport the cup-shaped workpiece to the outer side of the end of the punch; a through groove, which is opened on the feeding guide rail and is used for the passage of the punch during stretching forming; a positioning piece, which is installed in the through groove, and the positioning piece is provided with an arc-shaped positioning groove for positioning the cup-shaped workpiece, and aligning the axis of the cup-shaped workpiece with the axis of the punch.

[0012] Optionally, the die portion includes: a die having a stepped hole-shaped die cavity inside which can match the punch, the die cavity running through the entire die; and a die frame installed on the machine body, for connecting the die to the machine body and for ensuring that the die cavity is coaxial with the punch.

[0013] Optionally, it also includes an oil supply pipe, one end of which is connected to the die and communicates with the die cavity, for providing lubricating oil to the cup-shaped workpiece during stretching, and the other end of the oil supply pipe is connected to an external oil supply system.

[0014] Optionally, the bottom die portion includes: a bottom die, cooperating with the punching end of the punch to punch and form the bottom of the can body workpiece; and a bottom die frame, installed on the machine body, for installing the bottom die on the machine body.

[0015] Optionally, the stripping plate is installed on the die frame in several numbers, and the several stripping plates are distributed in a circular array along the axis of the die cavity, one end of the stripping plate extends radially along the die cavity to the outlet of the die cavity, the end of the stripping plate close to the outlet of the die cavity is in an arc shape, and the diameter of the arc is the same as the outer diameter of the punch, and the diameter of the circle formed by the arc ends of the several stripping plates is the same as the outer diameter of the punch.

[0016] Optionally, a material dropping hole is provided on the machine body below the material dropping gap and above the receiving groove, so as to allow the unloaded can body to pass through and drop onto the receiving groove.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The telescopic end of the hydraulic cylinder can drive the forming station on the corresponding side to perform stretching and forming work whether it is extended outward or retracted, and there is no "idle running state" proposed in the technical background, so that the telescopic end of the hydraulic cylinder can achieve two stretching and forming operations by reciprocating and retracting one time, which can make fuller use of the operation of the drive component, avoid the waste of corresponding resources, and greatly improve the processing efficiency;

[0020] 2. It can also realize the purpose of automatic feeding of cup-shaped workpieces. At the same time, the formed can body can be automatically unloaded by the setting of the unloading plate, thereby ensuring the degree of automation of the device and further increasing its processing efficiency to a certain extent. At the same time, the accuracy of workpiece feeding can be ensured by positioning, and the smooth guidance of the punch by the guide component can effectively guarantee the quality and qualified rate of the formed finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the molding station of the utility model;

[0024] Figure 4 This is a schematic diagram of the partial structure of the molding station of the utility model in front view and section;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the side view of the concave mold part of the utility model;

[0026] Figure 6 It is a schematic diagram of the side sectional structure of the feeding assembly of the utility model.

[0027] In the figure: 1. body; 101. blanking hole; 2. sliding part; 3. guide assembly; 301. stretching guide rail; 302. slider; 4. hydraulic cylinder; 5. punch; 6. feeding assembly; 601. feeding guide rail; 602. through slot; 603. positioning part; 9. die part; 901. die; 902. die cavity; 903. die frame; 10. oil supply pipe; 11. bottom die part; 1101. bottom die; 1102. bottom die frame; 12. unloading plate; 13. receiving slot. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides Figures 1 to 6 The embodiment of a can body forming device shown in the figure comprises a body 1 and two forming stations symmetrically distributed on the body 1;

[0030] Also includes:

[0031] Sliding member 2, arranged between two forming stations;

[0032] The guide assembly 3 is provided on the machine body 1 and is used to support and guide the sliding of the sliding member 2 to ensure the stability of the stretching sliding, thereby ensuring the precision of the stretching forming;

[0033] The guide assembly 3 comprises:

[0034] The stretching guide rail 301 is installed on the body 1 at a position below the sliding member 2, and the length direction of the stretching guide rail 301 is parallel to the stretching forming direction;

[0035] The slider 302 is mounted on the stretching guide rail 301 and connected to the slide member 2 so that the slide member 2 can slide along the length direction of the stretching guide rail 301;

[0036] The hydraulic cylinder 4 is provided on the machine body 1 and is used to drive the sliding member 2 to slide along the direction of the stretching guide rail 301;

[0037] The molding stations include:

[0038] A punch 5 is mounted on the slide 2 and is used to punch the workpiece;

[0039] A feeding assembly 6 is installed on the machine body 1 at a position outside the punch 5 and is used to feed the cup-shaped workpiece;

[0040] The feeding assembly 6 comprises:

[0041] The feeding guide rail 601 is a square tube, and its inner cavity is used to hold the cup-shaped workpieces and sequentially transport the cup-shaped workpieces to the outer side of the end of the punch 5;

[0042] A through slot 602 is provided on the feeding guide rail 601 for the punch 5 to pass through during stretch forming;

[0043] The positioning member 603 is installed in the through slot 602, and the positioning member 603 is provided with an arc-shaped positioning slot for positioning the cup-shaped workpiece, and aligning the axis of the cup-shaped workpiece with the axis of the punch 5, further ensuring the accuracy of the stretching forming;

[0044] The die portion 9 is mounted on the machine body 1 at a position outside the feeding assembly 6 and is used to cooperate with the punch 5 to stretch the cup-shaped workpiece into a can shape;

[0045] The die portion 9 comprises:

[0046] The die 901 has a stepped hole-shaped die cavity 902 inside thereof that can match the punch 5. The die cavity 902 runs through the entire die 901. Figure 4 As shown, during the stretching process, the punch 5 pushes the cup-shaped workpiece through the die cavity 902, and the diameter of each section of the stepped die cavity 902 decreases in sequence along the punching direction. Therefore, when the cup-shaped workpiece passes through the die cavity 902, it will gradually become longer and thinner under the extrusion of each section of the die cavity 902, and finally it will be stretched into a can body workpiece after coming out of the die cavity 902;

[0047] The die holder 903 is mounted on the machine body 1 and is used to connect the die 901 to the machine body 1 and to ensure that the die cavity 902 is coaxial with the punch 5;

[0048] It also includes an oil supply pipe 10, one end of which is connected to the die 901 and communicated with the die cavity 902, and is used to provide lubricating oil to the cup-shaped workpiece during stretching, provide sufficient lubrication for the stretching work, and play a role in cooling, thereby ensuring the qualified rate of the finished stretching product, and the other end of the oil supply pipe 10 is connected to an external oil supply system;

[0049] The bottom die portion 11 is installed on the machine body 1 at a position outside the concave die portion 9, and is used to stamp the bottom of the can-shaped workpiece, and a blanking gap is left between the concave die portion 9 and the bottom die portion 11;

[0050] The bottom mold part 11 comprises:

[0051] The bottom die 1101 cooperates with the punching end of the punch 5 to punch and form the bottom of the can body workpiece;

[0052] The bottom mold frame 1102 is installed on the machine body 1 and is used to install the bottom mold 1101 on the machine body 1;

[0053] like Figure 3 and Figure 4 As shown, the can body workpiece coming out of the die cavity 902 will be pushed further to the bottom die portion 11 by the punch 5. At this time, the closed end of the can body workpiece will contact the bottom die 1101, and the stamping end of the punch 5 is also provided with a groove matching the bottom of the can. With the cooperation of the groove and the protrusion of the bottom die 1101, the end of the can body workpiece can be stamped into the shape of the bottom of the can.

[0054] A stripper plate 12 is provided on the die portion 9 and is used to demould the formed can body workpiece;

[0055] The stripper plates 12 are installed on the die frame 903, and the number is several. The stripper plates 12 are distributed in a circular array along the axis of the die cavity 902. One end of the stripper plate 12 extends along the radial direction of the die cavity 902 to the outlet of the die cavity 902. The end of the stripper plate 12 close to the outlet of the die cavity 902 is in an arc shape, and the arc diameter is the same as the outer diameter of the punch 5. The diameter of the circle formed by the arc ends of the stripper plates 12 is the same as the outer diameter of the punch 5.

[0056] The receiving groove 13 is installed on the machine body 1 and is located below the blanking gap, and is used to guide the processed can body to the outside.

[0057] A material dropping hole 101 is provided on the machine body 1 below the material dropping gap and above the receiving groove 13 , for allowing the unloaded can body to pass through and drop onto the receiving groove 13 .

[0058] When the device is working specifically: first, multiple cup-shaped workpieces are stacked in sequence and placed in the cavity of the loading guide rail 601, and the cup-shaped workpiece at the bottom falls into the positioning groove on the positioning piece 603, and then the hydraulic cylinder 4 is started, and the telescopic end of the hydraulic cylinder 4 begins to push the sliding piece 2 and the punch 5 to slide. During this process, the punch 5 on one side of the sliding direction will first enter the through groove 602, and insert its end into the cup-shaped inner cavity on the positioning piece 603, and then the punch 5 continues to slide to push the workpiece into the die cavity 902 on the die 901. After the die cavity 902 cooperates with the punch 5, the workpiece is stretched into a can shape, and then is pushed out from the outer outlet of the die cavity 902. During this process, the arc end of the unloading plate 12 is squeezed by the outer side of the can copper workpiece, so the unloading plate 12 is bent to a certain extent outward until the can workpiece is After the workpiece is bent and separated from the stripper plate 12, it will return to its original shape under its own rebound action. At this time, the arc end of the stripper plate 12 abuts against the outer surface of the punch 5, and the punch 5 will continue to slide in the stretching direction under the drive of the hydraulic cylinder 4 until the end of the can body workpiece slides to the bottom die 1101. After completing the stamping of the end, the telescopic end of the hydraulic cylinder 4 begins to retract and pulls the punch 5 to slide back synchronously. During this process, the arc end of the stripper plate 12 will block the formed can body workpiece, so as to pull it off from the punch 5 and drop it into the receiving groove 13 through the blanking hole 101 on this side, so that one-time stretching forming can be achieved through the forming station on this side. After the punch 5 on this side slides out from the feeding guide rail 601, the cup-shaped workpiece on the upper part of the feeding guide rail 601 will also fall on the positioning member 603 under the action of gravity, waiting for subsequent stretching, and realizing the purpose of automatic feeding.

[0059] While the telescopic end of the hydraulic cylinder 4 retracts to drive the punch 5 to move back, the punch 5 on the other side will also be pushed to slide synchronously through the sliding member 2. Therefore, as in the above operation, the cup-shaped workpiece located at the forming station on the other side will be stretched and formed through the forming station on the other side. In this way, the telescopic end of the hydraulic cylinder 4 will drive the forming station on the corresponding side to perform stretching and forming work regardless of whether it extends outward or contracts.

[0060] The above description is only a preferred specific implementation manner 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A can body forming device, comprising a body (1) and two forming stations symmetrically distributed on the body (1), characterized in that: Also includes: A sliding member (2) is arranged between two forming stations; A guide assembly (3) is provided on the machine body (1) and is used to support and guide the sliding of the sliding member (2); A hydraulic cylinder (4) is provided on the machine body (1) and is used to drive the sliding member (2) to slide; The molding stations include: A punch (5) is mounted on the sliding member (2) and is used to punch the workpiece; A loading assembly (6) is mounted on the machine body (1) at a position outside the punch (5) and is used for loading the cup-shaped workpiece; The female die portion (9) is mounted on the machine body (1) at a position outside the feeding assembly (6) and is used to cooperate with the punch (5) to stretch the cup-shaped workpiece into a can body shape; The bottom die portion (11) is installed on the machine body (1) at a position outside the concave die portion (9) and is used for stamping the bottom of the can-shaped workpiece, and a blanking gap is left between the concave die portion (9) and the bottom die portion (11); A stripper plate (12) is provided on the concave mold portion (9) and is used to demould the molded can body workpiece; The receiving groove (13) is installed on the machine body (1) and is located below the blanking gap, and is used to guide the processed can body to the outside.

2. The can body forming device according to claim 1, characterized in that: The guide assembly (3) comprises: A stretching guide rail (301) is installed on the machine body (1) at a position below the sliding member (2), and the length direction of the stretching guide rail (301) is parallel to the stretching forming direction; The slider (302) is mounted on the stretching guide rail (301) and connected to the sliding member (2) so that the sliding member (2) can slide along the length direction of the stretching guide rail (301).

3. The can body forming device according to claim 1, characterized in that: The feeding assembly (6) comprises: The feeding guide rail (601) is a square tube, and its inner cavity is used to hold the cup-shaped workpiece and transport the cup-shaped workpiece to the outer side of the end of the punch (5); A through slot (602) is provided on the feeding guide rail (601) and is used for the punch (5) to pass through during stretch forming; The positioning member (603) is installed in the through groove (602), and the positioning member (603) is provided with an arc-shaped positioning groove for positioning the cup-shaped workpiece and aligning the axis of the cup-shaped workpiece with the axis of the punch (5).

4. The can body forming device of claim 1, characterized in that: The die portion (9) comprises: A die (901) is provided with a stepped hole-shaped die cavity (902) inside thereof that can match the punch (5), and the die cavity (902) runs through the entire die (901); The die frame (903) is mounted on the machine body (1) and is used to connect the die (901) to the machine body (1) and to ensure that the die cavity (902) and the punch (5) are coaxial.

5. The can body forming device of claim 4, characterized in that: It also includes an oil supply pipe (10), one end of which is connected to the die (901) and communicates with the die cavity (902) for providing lubricating oil to the cup-shaped workpiece during stretching, and the other end of which is connected to an external oil supply system.

6. The can body forming device of claim 1, characterized in that: The bottom mold part (11) comprises: The bottom die (1101) cooperates with the punching end of the punch (5) to punch and form the bottom of the can body workpiece; The bottom mold frame (1102) is installed on the machine body (1) and is used to install the bottom mold (1101) on the machine body (1).

7. The can body forming device of claim 6, characterized in that: The stripper plates (12) are installed on the die frame (903), and there are several stripper plates (12). The stripper plates (12) are distributed in a circular array along the axis of the die cavity (902). One end of the stripper plate (12) extends along the radial direction of the die cavity (902) to the outlet of the die cavity (902). The end of the stripper plate (12) close to the outlet of the die cavity (902) is in the shape of an arc, and the diameter of the arc is the same as the outer diameter of the punch (5). The diameter of the circle formed by the arc ends of the several stripper plates (12) is the same as the outer diameter of the punch (5).

8. The can body forming device of claim 1, characterized in that: A material dropping hole (101) is provided on the machine body (1) below the material dropping gap and above the receiving groove (13), for allowing the unloaded can body to pass through and drop onto the receiving groove (13).

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