Joint forming machine for metal cans

Abstract

A kind of metal can measuring seam forming machine, including forming expansion die mechanism, metal can conveying mechanism, forming expansion die mechanism includes forming expansion die device, it is characterized in that: measuring seam forming machine further includes pre-positioning device, control device, the forming expansion die device of forming expansion die mechanism is set in upper, and forming expansion die mechanism further includes lifting device, first rotating device, lifting mechanism, first weld detector.The beneficial effects of the present application compared with prior art are that, due to the improvement of structure, the metal cans whose weld position cannot be determined are first rotated to the state of preset angle by using pre-positioning device, so that the forming expansion die mechanism can quickly and accurately position the metal cans in a very short time, greatly reducing the positioning time, and the positioning time is stable, with small difference, so not only the work efficiency is greatly improved, but also the quality of product is greatly improved.

Description

Technical Field

[0001] This invention relates to a weld seam testing and forming device for metal cans, and more specifically to a weld seam testing and forming machine for metal cans capable of sequentially performing weld seam testing and forming expansion mold operations. Background Technology

[0002] Currently, the forming and expanding die processing of metal cans typically involves sequential weld seam inspection and forming and expanding die steps, performed at two separate work positions. The metal can is conveyed to the first work position by a chain conveyor or screw conveyor, where a weld seam inspection mechanism performs weld seam inspection. It is then conveyed to the second work position where a forming and expanding die mechanism performs the forming and expanding die operation.

[0003] For example, Chinese invention patent document CN2794736Y, entitled "An Automatic Crack Detection Device for Metal Cans," discloses an automatic crack detection device for metal cans. It includes a frame, a workpiece longitudinal displacement mechanism, a workpiece rotation mechanism, and a photoelectric detection mechanism. The workpiece longitudinal displacement mechanism consists of a cylinder and a slide frame connected to the cylinder piston rod. The slide frame is slidably fitted on the frame column. The workpiece rotation mechanism consists of a motor, a splined shaft mounted on the motor shaft, a rotating sleeve bracket mounted on the frame column, a rotating sleeve that is rotatably fitted with the rotating sleeve bracket, and a magnetic turntable installed at the end of the splined shaft. The splined shaft and the rotating sleeve are longitudinally slidably fitted. A workpiece push rod is provided on the rotating sleeve at the outer position of the magnetic turntable. The photoelectric detection mechanism consists of a mounting base and a photoelectric detector on the mounting base.

[0004] However, the above-mentioned traditional processing methods and equipment have a drawback: when the metal can enters the seam measuring mechanism and rotates to the correct position, and is then transported to the next working position by the conveying mechanism, the metal can often shift due to uncontrollable factors such as machine vibration, resulting in the metal can's position not being accurate enough during the forming and expanding mold processing. Summary of the Invention

[0005] The purpose of this invention is to provide a weld seam testing and forming machine for metal cans. This machine can sequentially complete weld seam inspection and forming / expanding mold operations, significantly improving work efficiency. The technical solution adopted is as follows:

[0006] A metal can seam forming machine includes a forming and expanding mold mechanism and a metal can conveying mechanism. The forming and expanding mold mechanism includes a forming and expanding mold device. The machine is characterized by further comprising:

[0007] The pre-positioning device rotates the metal can and detects the weld seam. After detecting the weld seam, it continues to rotate the metal can to a preset angle.

[0008] The control device receives weld detection signals and controls the forming expansion mold mechanism, metal can conveying mechanism, and pre-positioning device to work respectively.

[0009] The forming expansion mold mechanism also includes

[0010] The lifting device is located directly below the forming and expanding mold device. It holds the metal can and works with the forming and expanding mold device to complete the forming and expanding of the metal can.

[0011] The first rotating device drives the lifting device to rotate;

[0012] The lifting mechanism drives the first rotating device to rise and fall.

[0013] The first weld detector is installed on the lifting mechanism to detect welds and send the first weld detection signal.

[0014] In a preferred embodiment, the lifting mechanism includes a first cylinder, which drives a first rotating device to lift and lower.

[0015] In a more preferred embodiment, the lifting mechanism further includes a first mounting frame, a first liftable frame mounted on the first mounting frame and capable of vertically lifting and lowering along the first mounting frame, a forming expansion mold device and a first cylinder respectively mounted on the first mounting frame, the first liftable frame mounted on the first piston shaft of the first cylinder, and a first rotating device mounted on the first liftable frame.

[0016] In a preferred embodiment, the first rotating device is a first servo motor, and the lifting device is mounted on the first output shaft of the first servo motor.

[0017] A preferred embodiment is that the lifting device is a tray.

[0018] In a preferred embodiment, the pre-positioning device includes

[0019] The pressure vessel presses down on the metal cans located on the metal can conveying mechanism;

[0020] The second rotating device drives the pressure tank device to rotate;

[0021] The pressing device drives the second rotating device to move downwards;

[0022] The second weld detector detects the weld and sends a second weld detection signal.

[0023] A better embodiment is that the pressing device includes a second cylinder, which drives a second rotating device to rise and fall.

[0024] In a more preferred embodiment, the pressing device further includes a second mounting bracket, a second liftable bracket mounted on the second mounting bracket and capable of vertically lifting and lowering along the second mounting bracket, the pressing device and the second cylinder respectively mounted on the second mounting bracket, the second liftable bracket mounted on the second piston shaft of the second cylinder, and the second rotating device mounted on the second liftable bracket.

[0025] A better solution is that the second rotating device is a second servo motor, and the pressure vessel device is mounted on the second output shaft of the second servo motor.

[0026] A better solution is that the pressure vessel device is a pressure vessel plate.

[0027] A better solution is to mount the second weld detector on the second mounting bracket.

[0028] In a preferred embodiment, the test joint forming machine also includes

[0029] The metal can transfer mechanism transfers metal cans between the metal can conveying mechanism and the lifting device of the forming and expanding mold device.

[0030] In one embodiment, the metal can transfer mechanism is a robotic arm.

[0031] In one embodiment, the metal can transfer mechanism is a clamping mechanism.

[0032] The advantages of this invention compared to the prior art are that, due to the structural improvements, a pre-positioning device is used to rotate all metal cans with uncertain weld seam positions to a preset angle. Furthermore, the forming and expanding mold mechanism, in cooperation with the first rotating device of the lifting mechanism, enables the lifting of the can while simultaneously rotating and measuring the weld seam. Therefore, the forming and expanding mold mechanism can quickly and accurately position the metal can in a very short time, greatly reducing the positioning time. Moreover, the positioning time is stable with minimal variation, thus significantly improving work efficiency and product quality. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention;

[0034] Figure 2 yes Figure 1 The diagram shown illustrates the usage state of the forming expansion mold mechanism in the embodiment.

[0035] Figure 3 yes Figure 1 The circuit block diagram of the embodiment shown;

[0036] Figure 4 yes Figure 1 A schematic diagram of the initial state of the metal can of the prepositioning device in the embodiment shown;

[0037] Figure 5 yes Figure 1 A schematic diagram showing the detection of weld seams in a metal can using a pre-positioning device in the illustrated embodiment;

[0038] Figure 6 yes Figure 1 A schematic diagram of the final state of the metal can of the prepositioning device in the embodiment shown;

[0039] Figure 7 yes Figure 1 A schematic diagram of the initial state of the metal can using the forming expansion mold mechanism in the embodiment shown.

[0040] Figure 8 yes Figure 1 A schematic diagram of the final state of the metal can using the forming expansion mold mechanism in the embodiment shown.

[0041] Figure 9 This is a schematic diagram of another embodiment of the present invention. Detailed Implementation

[0042] like Figure 1-3 As shown, a metal can seam forming machine in one embodiment of this application includes a forming and expanding mold mechanism 1 and a metal can conveying mechanism. The forming and expanding mold mechanism 1 includes a forming and expanding mold device 101. The seam forming machine also includes...

[0043] The pre-positioning device 3 rotates the metal can 5 in the forward direction and detects the weld 501. After detecting the weld 501, it continues to rotate the metal can 5 to a preset angle.

[0044] Control device 4 receives weld detection signals and controls the forming expansion mold mechanism 1, metal can conveying mechanism, and pre-positioning device 3 to work respectively;

[0045] The forming expansion mold mechanism 1 also includes

[0046] The lifting device 102 is located directly below the forming and expanding mold device 101, and stores the metal can 5 and cooperates with the forming and expanding mold device 101 to complete the forming and expanding work of the metal can 5.

[0047] The first rotating device 103 drives the lifting device 102 to rotate in the opposite direction;

[0048] The lifting mechanism 104 drives the first rotating device 103 to rise and fall.

[0049] The first weld detector 105 is installed on the lifting mechanism 104 to detect weld 501 and send the first weld detection signal.

[0050] Forward rotation and counter-clockwise rotation are in opposite directions. That is, if forward rotation is clockwise, then counter-clockwise rotation is counter-clockwise; if forward rotation is counter-clockwise, then counter-clockwise rotation is clockwise.

[0051] like Figure 4-8 As shown, in one optional embodiment of this application, forward rotation is counterclockwise, and reverse rotation is clockwise.

[0052] like Figure 1 , 2 As shown, in one alternative embodiment of this application, the lifting mechanism 104 includes a first cylinder 1041, which drives the first rotating device 103 to rise and fall.

[0053] like Figure 1 , 2 As shown, in an alternative embodiment of this application, the lifting mechanism 104 further includes a first mounting frame 1042, a first liftable frame 1043 mounted on the first mounting frame 1042 and capable of vertically lifting along the first mounting frame 1042, a forming expansion mold device 101 and a first cylinder 1041 respectively mounted on the first mounting frame 1042, the first liftable frame 1043 mounted on the first piston shaft of the first cylinder 1041, and a first rotating device 103 mounted on the first liftable frame 1043.

[0054] like Figure 1 , 2 As shown, in one alternative embodiment of this application, the first rotating device 103 is a first servo motor, and the lifting device 102 is mounted on the first output shaft of the first servo motor.

[0055] like Figure 1 , 2 As shown, in one alternative embodiment of this application, the lifting device 102 is a tray.

[0056] like Figure 1 , 2 As shown, in one alternative embodiment of this application, the pre-positioning device 3 includes...

[0057] Pressure vessel 301 presses down on the metal can 5 located on the metal can conveying mechanism;

[0058] The second rotating device 302 drives the pressure tank device 301 to rotate;

[0059] The pressing device 303 drives the second rotating device 302 to move downwards;

[0060] The second weld detector 304 detects weld 501 and sends a second weld detection signal.

[0061] like Figure 1 , 2 As shown, in one alternative embodiment of this application, the pressing device 303 includes a second cylinder 3031, which drives the second rotating device 302 to rise and fall.

[0062] like Figure 1 , 2 As shown, in an alternative embodiment of this application, the pressing device 303 further includes a second mounting bracket 3032 and a second lifting bracket 3033 mounted on the second mounting bracket 3032 and capable of vertically lifting along the second mounting bracket 3032. The pressing device 303 and the second cylinder 3031 are respectively mounted on the second mounting bracket 3032, the second lifting bracket 3033 is mounted on the second piston shaft of the second cylinder 3031, and the second rotating device 302 is mounted on the second lifting bracket 3033.

[0063] like Figure 1 , 2 As shown, in one alternative embodiment of this application, the second rotating device 302 is a second servo motor, and the pressure vessel device 301 is mounted on the second output shaft of the second servo motor.

[0064] like Figure 1 , 2 As shown, in one alternative embodiment of this application, the pressure vessel device 301 is a pressure vessel plate.

[0065] like Figure 1 , 2 As shown, in one alternative embodiment of this application, the second weld detector 304 is mounted on the second mounting bracket 3032.

[0066] like Figure 1 , 2 As shown in one embodiment of this application, the metal can conveying mechanism includes a chain conveyor 2.

[0067] In one alternative embodiment of this application, the metal can conveying mechanism further includes...

[0068] The metal can transfer device transfers the metal can 5 between the chain conveyor 2 and the lifting device 102 of the forming and expanding mold device 101.

[0069] In one alternative embodiment of this application, the metal can transfer device is a robotic arm.

[0070] like Figure 9 As shown, in one alternative embodiment of this application, the metal can conveying mechanism is a clamping mechanism 6.

[0071] like Figure 1 , 2As shown in one embodiment of this application, the forming expansion mold device 101 includes a third cylinder 1011, a support frame 1012, and a forming expansion mold 1013. The support frame 1012 is mounted on a first mounting frame 1042, the third cylinder 1011 is mounted on the third mounting frame 1012, and the forming expansion mold 1013 is mounted on a third piston shaft that extends vertically downward from the third cylinder 1011.

[0072] like Figure 4-8 As shown, the forming process of the metal can 5 includes the following steps in sequence:

[0073] (1) The metal can conveying mechanism conveys the metal can 5 to the prepositioning device 3;

[0074] (2) The prepositioning device 3 rotates the metal can 5 in the forward direction and detects the weld 501. After the weld 501 is detected, the metal can 5 continues to rotate until the metal can 5 stops after rotating a preset angle.

[0075] (3) The metal can conveying mechanism conveys the metal can 5 to the forming expansion mold mechanism 1 and transfers the metal can 5 located on the metal can conveying mechanism to the lifting device 102 of the forming expansion mold mechanism 1;

[0076] (4) The lifting mechanism 104 drives the first rotating device 103 to rise, and at the same time the first rotating device 103 drives the lifting device 102 to rotate in the opposite direction. The first weld detector 105 detects the weld 501 of the metal can 5. When the first weld detector 105 detects the weld 501 of the metal can 5, it sends a first weld detection signal. The control device 4 receives the first weld detection signal and controls the first rotating device 103 to stop working. The metal can 5 stops rotating. The lifting mechanism 104 drives the first rotating device 103 to continue to rise and cooperates with the forming expansion mold device 101 to complete the forming expansion work of the metal can 5. The lifting mechanism 104 drives the first rotating device 103 to fall back to its original position.

[0077] (5) The metal can transfer mechanism transfers the metal can 5 that has been formed and expanded on the lifting device 102 of the forming and expanding mold mechanism 1 to the metal can conveying mechanism, and the metal can conveying mechanism sends the metal can 5 that has been formed and expanded away.

[0078] This process is repeated continuously, allowing the forming and expansion of one metal can after another to be completed.

[0079] like Figure 4-6As shown, the specific steps of step (2) are as follows: the pressing device 303 drives the second rotating device 302 and the pressure vessel device 301 to descend until the pressure vessel device 301 touches the top of the metal can 5 and presses the metal can 5 tightly; then the second rotating device 302 drives the pressure vessel device 301 to rotate in the forward direction, and the pressure vessel device 301 drives the metal can 5 to rotate in the forward direction; the second weld detector 304 detects the weld 501, and sends a second weld detection signal after the second weld detector 304 detects the weld 501; after the control device 4 receives the second weld detection signal, it controls the second rotating device 302 to continue rotating for a period of time, so that the metal can 5 rotates another preset angle and then stops rotating; finally, the pressing device 303 drives the second rotating device 302 and the pressure vessel device 301 to rise back to their original positions.

[0080] The preset angle range is 3-10 degrees.

[0081] like Figure 6 As shown, in one optional embodiment, the preset angle is 5 degrees.

[0082] In one alternative embodiment, the preset angle is 3 degrees.

[0083] In one alternative embodiment, the preset angle is 10 degrees.

[0084] Since the pre-positioning device 3 first rotates all the metal cans 5 whose weld seam positions are uncertain to a preset angle, the forming expansion mold mechanism 1 can quickly and accurately position the metal cans 5 in a very short time, greatly reducing the positioning time. Moreover, the positioning time is stable and the difference is small. Therefore, it not only greatly improves the work efficiency, but also greatly improves the quality of the product (because the position of the weld seam is very accurate and the precision is high).

[0085] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this invention are included within the scope of protection of this invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this invention or exceed the scope defined in these claims, all of which should fall within the scope of protection of this invention.

Claims

1. A metal can seam forming machine, comprising a forming and expanding mold mechanism and a metal can conveying mechanism, wherein the forming and expanding mold mechanism includes a forming and expanding mold device, characterized in that: The test joint forming machine also includes The pre-positioning device rotates the metal can and detects the weld seam. After detecting the weld seam, it continues to rotate the metal can to a preset angle. The control device receives weld detection signals and controls the forming expansion mold mechanism, metal can conveying mechanism, and pre-positioning device to work respectively. The forming expansion mold mechanism also includes The lifting device is located directly below the forming and expanding mold device. It holds the metal can and works with the forming and expanding mold device to complete the forming and expanding of the metal can. The first rotating device drives the lifting device to rotate; The lifting mechanism drives the first rotating device to rise and fall. The first weld detector is installed on the lifting mechanism to detect welds and send the first weld detection signal.

2. The metal can seam forming machine as described in claim 1, characterized in that: The lifting mechanism includes a first cylinder, which drives a first rotating device to lift and lower.

3. The metal can seam forming machine as described in claim 2, characterized in that: The lifting mechanism further includes a first mounting frame, a first liftable frame mounted on the first mounting frame and capable of vertically lifting and lowering along the first mounting frame, a forming expansion mold device and a first cylinder respectively mounted on the first mounting frame, the first liftable frame mounted on the first piston shaft of the first cylinder, and a first rotating device mounted on the first liftable frame.

4. The metal can seam forming machine as described in claim 1, characterized in that: The first rotating device is a first servo motor, and the lifting device is mounted on the first output shaft of the first servo motor.

5. The metal can seam forming machine as described in any one of claims 1-4, characterized in that: The prepositioning device includes The pressure vessel presses down on the metal cans located on the metal can conveying mechanism; The second rotating device drives the pressure tank device to rotate; The pressing device drives the second rotating device to move downwards; The second weld detector detects the weld and sends a second weld detection signal.

6. The metal can seam forming machine as described in claim 5, characterized in that: The pressing device includes a second cylinder, which drives a second rotating device to rise and fall.

7. The metal can seam forming machine as described in claim 6, characterized in that: The pressing device also includes a second mounting frame, a second liftable frame mounted on the second mounting frame and capable of vertically lifting and lowering along the second mounting frame, the pressing device and the second cylinder respectively mounted on the second mounting frame, the second liftable frame mounted on the second piston shaft of the second cylinder, and the second rotating device mounted on the second liftable frame.

8. The metal can seam forming machine as described in claim 5, characterized in that: The forming process of the metal can includes the following steps in sequence: (1) The metal can conveying mechanism conveys the metal can to the pre-positioning device; (2) The prepositioning device rotates the metal can in the forward direction and detects the weld. After the weld is detected, the metal can continues to rotate until it stops after rotating a preset angle. (3) The metal can conveying mechanism conveys the metal can to the forming expansion mold mechanism and transfers the metal can located on the metal can conveying mechanism to the lifting device of the forming expansion mold mechanism; (4) The lifting mechanism drives the first rotating device to rise, and at the same time the first rotating device drives the lifting device to rotate in the opposite direction. The first weld detector detects the weld of the metal can. When the first weld detector detects the weld of the metal can, it sends the first weld detection signal. The control device receives the first weld detection signal and controls the first rotating device to stop working. The metal can stops rotating. The lifting mechanism drives the first rotating device to continue to rise and cooperates with the forming expansion mold device to complete the forming expansion work of the metal can. The lifting mechanism drives the first rotating device to fall back to its original position. (5) The metal can transfer mechanism transfers the metal can that has been shaped and expanded on the lifting device of the forming and expanding mold mechanism to the metal can conveying mechanism, and the metal can conveying mechanism sends the metal can that has been shaped and expanded away.

9. The metal can seam forming machine as described in claim 8, characterized in that: The specific steps of step (2) are as follows: the pressing device drives the second rotating device and the pressure vessel device to descend until the pressure vessel device touches the top of the metal can and presses the metal can tightly; then the second rotating device drives the pressure vessel device to rotate in the forward direction, and the pressure vessel device drives the metal can to rotate in the forward direction; the second weld detector detects the weld, and sends a second weld detection signal after the second weld detector detects the weld; after the control device receives the second weld detection signal, it controls the second rotating device to continue rotating for a period of time, so that the metal can rotates another preset angle and then stops rotating; finally, the pressing device drives the second rotating device and the pressure vessel device to rise back to their original positions.

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