An eight-station laser welding machine

Abstract

The present invention relates to an eight-station laser welding machine, comprising a cup body conveyor belt device, a film conveyor device, a workbench, a finished cup conveyor belt device, a laser welding device, a film and cup body rotation transmission device, and a control device; it also comprises a driving wheel, the driving wheel can be rotatably set on the workbench, and is connected to the wheel drive motor set on the workbench through a reduction commutator. Eight welding stations are evenly arranged along the circumference of the driving wheel, and every two welding stations are divided into a group, totaling four welding station groups. The control device drives the driving wheel to rotate, so that the four welding station groups rotate with each other to step by step load the film, load the cup body, weld and remove the finished cup. After one welding cycle, it only takes one step to complete the work of loading the film, loading the cup body, welding and removing the finished cup, and the welding work of two cups can be completed each time, which greatly improves work efficiency.

Description

Technical Field

[0001] The invention belongs to the field of processing machinery and equipment, and in particular relates to an eight-station laser welding machine. Background Art

[0002] During the production process of thermos cups, the bottom film and the cup body need to be connected by welding. Currently, the industry basically adopts a single-station welding method for welding. During welding, the bottom film is sucked onto the bottom film holder by a bottom film suction device, and the cup body is further clamped by a robot and placed on the bottom film. Then, the bottom film and the cup body are driven to rotate synchronously for welding. After welding is completed, the finished cup is clamped and the previous round of actions are repeated to carry out the subsequent welding of the bottom film and the cup body. During the period of adding the bottom film, adding the cup body, welding the bottom film and the cup body, and removing the finished cup after welding, the operator has to wait for the entire process to be completed before proceeding to the next welding work. Therefore, a lot of time is wasted in the waiting process. Therefore, the efficiency of this single-station welding method is relatively low. Summary of the Invention

[0003] In order to solve the technical problems existing in this technical field, the present invention provides an eight-station laser welding machine.

[0004] In order to solve the technical problems existing in this technical field, an eight-station laser welding machine is provided, which includes a cup body conveyor device, a film conveyor device, a workbench, a finished cup conveyor device, a laser welding device, a film and cup body rotation transmission device and a control device; it also includes a driving wheel, which is rotatably set on the workbench and is connected to the wheel drive motor set on the workbench through a reduction commutator. Eight welding stations are evenly arranged along the circumference of the driving wheel, and every two welding stations are divided into a group, totaling four welding station groups. The film conveyor is set on The first welding station group is located at the position of the cup body conveyor belt device, the second welding station group is located at the position of the laser welding device and the bottom film and cup body rotation transmission device are located at the position of the third welding station group, and the finished cup conveyor belt device is located at the position of the fourth welding station group; the control device controls the driving wheel to rotate to load the bottom film in the first welding station group, load the cup body in the second welding station group, and in the third welding station group, the bottom film and cup body are driven to rotate by the bottom film and cup body rotation transmission device while the laser welding device is used to weld the bottom film and cup body, and the finished cup is removed in the fourth welding station group. In this way, the eight welding stations set by the driving wheel are divided into two groups, and the control device drives the driving wheel to rotate, so that the four welding station groups rotate with each other to load the bottom film, load the cup body, weld and remove the finished cup in steps. After one welding cycle, it only takes one step to complete the work of loading the bottom film, loading the cup body, welding and removing the finished cup, and the welding of two cups can be completed each time, greatly improving work efficiency.

[0005] Furthermore, the bottom film and cup body rotation transmission device includes bottom film and cup body rotation fixing parts arranged at the eight welding stations of the driving wheel and two motor drive parts arranged at the position of the third welding station group. The two motor drive parts are respectively connected to the two bottom film and cup body rotation fixing parts driven by the driving wheel to the third welding station group through friction transmission.

[0006] Furthermore, the motor drive part includes a fixed plate and a motor bracket, the fixed plate is fixedly set on the workbench, the motor bracket can be slidably set on the fixed plate through a slide rail, a compression spring is provided between the motor bracket and the fixed plate, a driving motor and a driving wheel shaft are provided on the motor bracket, the output end of the driving motor is connected to the driving wheel shaft through a synchronous belt transmission, and a first driving wheel is provided on the driving wheel shaft; the film and cup body rotation fixing part includes a film seat fixing rod, a mounting seat and a second driving wheel, the second driving wheel is provided on the fixing seat, and the fixing seat is rotatably fixed to the mounting seat through a number of bearings, the upper end of the film seat fixing rod passes through the upper end of the mounting seat, the spline rod portion of the lower end of the film seat fixing rod is drive-connected to the fixing seat, and the second driving wheel is friction-drivenly connected to the first driving wheel.

[0007] Furthermore, the film and cup body rotation fixing part also includes a film seat fixing rod position adjustment part, and the film seat fixing rod position adjustment part includes an adjustment seat, and the film seat fixing rod is rotatably set in the adjustment seat through a number of bearings, and the adjustment seat is movably set in the mounting seat, and a support part that can be clamped or released with it is also provided on the outside of the adjustment seat, and the support part can be movably set up and down on the mounting seat through a guide rod limited at the upper end, and a reset spring is also provided between the support part and the mounting seat.

[0008] Furthermore, the cup body conveyor belt device is provided with a conveyor belt bracket, and the conveyor belt bracket is provided with a first conveyor belt assembly and a second conveyor belt assembly, the first conveyor belt assembly and the second conveyor belt assembly share a driven shaft, the output end of the first conveying drive motor provided in the first conveyor belt assembly is connected to the bearing on the driven shaft through a plurality of first conveyor belts, and the output end of the second conveying drive motor provided in the second conveyor belt assembly is connected to the bearing on the driven shaft through a plurality of second conveyor belts, and the plurality of first conveyor belts and the plurality of second conveyor belts are arranged at intervals.

[0009] Furthermore, a first intercepting device is provided at the driven shaft position shared by the first conveyor belt assembly and the second conveyor belt assembly, a second intercepting device is provided at a predetermined position on the second conveyor belt assembly, and an induction switch is provided at the output end position of the second conveying drive motor of the second conveyor belt assembly and the positions of the first intercepting device and the second intercepting device.

[0010] Furthermore, each of the first conveyor belt and each of the second conveyor belt is provided with a separate bearing on the driven shaft for transmission; the first intercepting device includes an intercepting movable plate and a first intercepting cylinder, the intercepting movable plate can be rotatably set on the conveyor belt bracket, and is transmission-connected to the output end of the first intercepting cylinder, the intercepting movable plate can be moved by the first intercepting cylinder, and its head end and tail end are respectively away from or close to the first conveyor belt assembly or the second conveyor belt assembly; the second intercepting cylinder provided in the second intercepting device releases or intercepts the cup body through the intercepting head at its output end; a group of width-adjustable limit plates are provided on the conveyor belt bracket, and the limit plates are used to limit cup bodies of different diameters.

[0011] Furthermore, the film conveying device includes a film conveyor belt mechanism and a film extraction mechanism. The film extraction mechanism is provided with two suction cups, and the two suction cups are arranged at the output end of the rotating cylinder. The rotating cylinder is arranged at the output end of the suction cup up and down adjustment cylinder. The suction cup up and down adjustment cylinder can be slidably arranged on the suction cup guide rail through a slider, and is connected to the output end of the suction cup drive motor arranged on the suction cup guide rail through a synchronous belt transmission.

[0012] Furthermore, the third welding station group and the fourth welding station group are respectively provided with a cup body clamping device and a finished cup clamping device, and the cup body clamping device and the finished cup clamping device have the same structure; the cup body clamping device is provided with two groups of clamping robots, and each group of clamping robots is provided with a clamping cylinder, and the two groups of clamping cylinders are provided at the output end of the clamping up and down adjustment cylinder, and the clamping up and down adjustment cylinder can be slidably set on the position adjustment slide rail through a slider, and is connected to the output end of the position adjustment motor provided on the position adjustment slide rail through a synchronous belt drive.

[0013] Furthermore, the laser welding device includes a laser welding head, which is slidable up and down on a movable block through a slider and can be adjusted up and down by a first adjustment handle. The movable block can be slidably set on a workbench and can be adjusted away from or close to the bottom film and the cup body rotating fixing part by a second adjustment handle to weld the bottom film and the cup body.

[0014] Furthermore, the fourth welding station group is also provided with an ejection device, which includes a pair of ejection rods. The upper ends of the pair of ejection rods are abutted against the two bottom plates transmitted to the fourth welding station group and the lower end of the bottom plate holder fixing rod provided on the cup body rotation fixing part. The ejection rods can be slid up and down on the workbench through the guide rods, and are connected to the output end of the ejection drive motor provided on the workbench.

[0015] The present invention relates to an eight-station laser welding machine, comprising a cup body conveyor device, a film conveyor device, a workbench, a finished cup conveyor device, a laser welding device, a film and cup body rotation transmission device, and a control device; it also comprises a driving wheel, the driving wheel can be rotatably set on the workbench, and is connected to the wheel drive motor set on the workbench through a reduction commutator. Eight welding stations are evenly arranged along the circumference of the driving wheel, and every two welding stations are divided into a group, totaling four welding station groups. By driving the driving wheel to rotate by the control device, the four welding station groups are rotated with each other to step by step load the film, load the cup body, weld and remove the finished cup. After one welding cycle, it only takes one step to complete the work of loading the film, loading the cup body, welding and removing the finished cup, and the welding work of two cups can be completed each time, which greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 and Figure 2 This is a schematic diagram of the three-dimensional structure of an eight-station laser welding machine;

[0017] Figure 3 and Figure 4 This is a schematic diagram of the layout of the drive wheel station of the eight-station laser welding machine;

[0018] Figure 5-Figure 7 It is a schematic diagram of the structure of the film and cup body rotation transmission device;

[0019] Figure 8 and Figure 9 This is a schematic diagram of the cup body transmission belt device structure;

[0020] Figure 10 It is a structural schematic diagram of a film conveying device;

[0021] Figure 11 It is a schematic diagram of the structure of the cup body grasping device and the finished cup grasping device. DETAILED DESCRIPTION

[0022] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the present invention, but the description is for the purpose of illustrating the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be as defined in the appended claims.

[0023] The present invention will be further described below in conjunction with the accompanying drawings, but this does not limit the present invention.

[0024] Example

[0025] like Figure 1-4 As shown, an eight-station laser welding machine includes a cup body conveyor device 1, a film conveyor device 2, a workbench 3, a finished cup conveyor device 5, a laser welding device 6, a film and cup body rotation transmission device 7 and a control device;

[0026] It also includes a driving wheel 4, which can be rotatably set on the workbench 3 and is connected to the wheel drive motor 4b set on the workbench 3 through a reduction commutator 4a. Eight welding stations are evenly arranged along the circumference of the driving wheel 4, and every two welding stations are divided into a group, totaling four welding station groups A, B, C, and D. The film conveying device 2 is set at the first welding station group A, the cup body conveyor device 1 is set at the second welding station group B, the laser welding device 6 and the film and cup body rotation transmission device 7 are set at the third welding station group C, and the finished cup conveyor device 5 is set at the fourth welding station group D. The control device controls the driving wheel 4 to rotate the film in the first welding station group A and the cup body in the second welding station group B. In the third welding station group C, the film and cup body are driven to rotate by the film and cup body rotation transmission device 7, and the film and cup body are welded by the laser welding device 6. The finished cup is taken out in the fourth welding station group D.

[0027] Working process: Eight welding stations are evenly arranged along the circumference of the driving wheel 4, and every two welding stations are divided into a group, totaling four welding station groups A, B, C, and D. The wheel drive motor 4b drives the four welding station groups A, B, C, and D through the reduction commutator 4a to rotate the positions; when in the first welding station group A position, the film clamping device 2 clamps the film and places it on the welding station of the first welding station group A, and further drives the wheel 4 to rotate to the second welding station group B position, and the second welding station group B The cup body clamping device 10 set at the upper end of the connection position clamps two spaced cup bodies 9 and places them on the bottom film of the second welding station group B, and then further drives the wheel disc 4 to continue rotating and transmit it to the third welding station group C. At this time, the pressing head of the cup body pressing head mechanism 8 set at the upper end of the third welding station group C (the pressing head can rotate with the cup body) moves downward to press the cup body 9. At the same time, the bottom film and cup body rotation transmission device 7 at the third welding station group C drive the bottom film and cup body at the corresponding position to rotate synchronously, and the laser welding device 6 (attached Figure 3For the convenience of observation, only one laser welding device 6 is shown at the position of the third welding station group C. A laser welding device 6 is also provided at the position of the other film and cup body rotating transmission device 7. After the film and the cup body are welded, the driving wheel 4 continues to rotate to the position of the fourth welding station group D, and the finished cup clamping device 11 takes out the welded finished cup to the finished cup conveyor device 5. The finished cup conveyor device 5 drives the conveyor belt through the output drive motor 5a to output the finished cup. In this way, the eight welding stations set by the driving wheel 4 are grouped in pairs. The control device drives the driving wheel 4 to rotate, so that the four groups of welding stations rotate with each other to step by step load the film, load the cup body, weld and take out the finished cup. After one welding cycle, it only takes the time of the first step to complete the work of loading the film, loading the cup body, welding and taking out the finished cup, and the welding of two cups can be completed each time, which greatly improves work efficiency.

[0028] Preferably, the bottom film and cup body rotation transmission device 7 includes a bottom film and cup body rotation fixing part 7a arranged at the eight welding stations of the driving wheel 4 and two motor drive parts 7b arranged at the position of the third welding station group C. The two motor drive parts 7b are respectively connected to the two bottom film and cup body rotation fixing parts 7a driven by the driving wheel 4 to the third welding station group C by friction transmission.

[0029] More preferably, Figure 5-Figure 7 As shown, the motor drive unit 7b includes a fixed plate 7b1 and a motor bracket 7b3, the fixed plate 7b1 is fixedly set on the workbench 3, the motor bracket 7b3 is slidably set on the fixed plate 7b1 through a slide rail, a compression spring 7b7 is set between the motor bracket 7b3 and the fixed plate 7b1, a drive motor 7b2 and a drive shaft 7b4 are set on the motor bracket 7b3, the output end of the drive motor 7b2 and the drive shaft 7b4 are connected by a synchronous belt 7b5, and the drive shaft 7b4 is set There is a first driving wheel 7b6; the film and cup body rotation fixing part 7a includes a film seat fixing rod 7a1, a mounting seat 7a6 and a second driving wheel 7a7, the second driving wheel 7a7 is arranged on the fixing seat 7a8, and the fixing seat 7a8 is rotatably fixed on the mounting seat 7a6 through a number of bearings. The upper end of the film seat fixing rod 7a1 passes through the upper end of the mounting seat 7a6, and the spline rod part of the lower end of the film seat fixing rod 7a1 is drivingly connected to the fixing seat 7a8, and the second driving wheel 7a7 is frictionally connected to the first driving wheel 7b6.

[0030] During operation, the drive motor 7b2 of the motor drive unit 7b drives the drive wheel shaft 7b4 and the first drive wheel 7b6 to rotate synchronously. At the same time, the first drive wheel 7b6 is frictionally connected to the second drive wheel 7a7, thereby rotating the second drive wheel 7a7 along with the first drive wheel 7b6. The second drive wheel 7a7 then drives the fixing seat 7a8 and the film holder fixing rod 7a1 to rotate synchronously, thereby driving the film holder, the film, and the cup body 9 arranged at the upper end of the film holder fixing rod 7a1 to rotate synchronously. When the film and the cup body 9 rotate synchronously, the laser welding device 6 arranged at the position of the third welding station group C welds the junction of the film and the cup body. Therefore, by adopting a friction transmission method between the motor drive unit 7b and the film and cup body rotation fixing part 7a, the eight welding stations, each of which is a group of two welding stations, can be rotated and cyclically driven to complete the rotation of the film and the cup body, thereby achieving the simultaneous driving and welding of the two welding stations at the position of the third welding station group C, which can improve the welding efficiency of the multi-station laser welding machine.

[0031] More preferably, the film and cup body rotation fixing part 7a also includes a film seat fixing rod position adjustment part, and the film seat fixing rod position adjustment part includes an adjustment seat 7a2, and the film seat fixing rod 7a1 is rotatably set in the adjustment seat 7a2 through a number of bearings, and the adjustment seat 7a2 is movably set in the mounting seat 7a6. A support part 7a3 that can be clamped or released with it is also provided on the outside of the adjustment seat 7a2, and the support part 7a3 can be movably set up and down on the mounting seat 7a6 through a guide rod with an upper end limit, and a reset spring 7a4 is also provided between the support part 7a3 and the mounting seat 7a6.

[0032] Since the film base fixing rod 7a1 is rotatably arranged in the adjustment seat 7a2 through a plurality of bearings, the film base fixing rod 7a1 can rotate relative to the adjustment seat 7a2 in real time, and Figure 6 As shown, the spline rod portion at the lower end of the film holder fixing rod 7a1 can be moved up and down in the fixing seat 7a8; at the same time, the support portion 7a3 can be tightened and connected to the adjustment seat 7a2, and can be moved up and down as a whole under the guidance of the guide rod; when it is necessary to adjust the up and down positions of the adjustment seat 7a2 and the film holder fixing rod 7a1, the support portion 7a3 is released and loosened, and the up and down positions of the film holder fixing rod 7a1 can be adjusted. After adjusting the positions of the adjustment seat 7a2 and the film holder fixing rod 7a1, the support portion 7a3 is locked to form a whole with the adjustment seat 7a2, thereby adapting to welding of films of different heights.

[0033] More preferably, Figure 7As shown, the support portion 7a3 is further provided with an adjustment handle 7a5, which can be rotated to open or close the mouth of the adjustment support portion 7a3, thereby adjusting the degree of clamping between the support portion 7a3 and the adjustment seat 7a2, thereby facilitating the adjustment of the relative position of the support portion 7a3 and the adjustment seat 7a2. After adjustment, the adjustment handle 7a5 is rotated to clamp and fix the support portion 7a3 and the adjustment seat 7a2.

[0034] More preferably, the support portion 7a3 is threadedly connected to the adjustment seat 7a2. The support portion 7a3 and the adjustment seat 7a2 are threadedly connected. By releasing and loosening the support portion 7a3, the adjustment seat 7a2 can be rotated to adjust the relative position of the adjustment seat 7a2 and the support portion 7a3, which is more conducive to more precise adjustment of the position of the adjustment seat 7a2.

[0035] More preferably, Figure 8-Figure 9 As shown, the cup body conveyor belt device 1 is provided with a conveyor belt bracket 1a, and the conveyor belt bracket 1a is provided with a first conveyor belt component 1b and a second conveyor belt component 1c. The first conveyor belt component 1b and the second conveyor belt component 1c share a driven shaft 1d, and the output end of the first conveying drive motor 1b1 provided in the first conveyor belt component 1b is connected to the bearing on the driven shaft 1d through a plurality of first conveyor belts 1b2, and the output end of the second conveying drive motor 1c1 provided in the second conveyor belt component 1c is connected to the bearing on the driven shaft 1d through a plurality of second conveyor belts 1c2, and the plurality of first conveyor belts 1b2 and the plurality of second conveyor belts 1c2 are arranged at intervals.

[0036] The first conveyor belt assembly 1b and the second conveyor belt assembly 1c share the driven shaft 1d and are controlled by the first conveying drive motor 1b1 and the second conveying drive motor 1c1 respectively to sort the cup bodies 9 at intervals. When the cup bodies 9 are conveyed on the second conveyor belt assembly 1c, the first conveyor belt assembly 1b stops working, thereby effectively preventing the subsequent cup bodies 9 on the first conveyor belt assembly 1b from being squeezed forward and backward and tipping over.

[0037] More preferably, a first intercepting device 1e is provided at the position of the driven shaft 1d shared by the first conveyor belt assembly 1b and the second conveyor belt assembly 1c, a second intercepting device 1f is provided at a predetermined position on the second conveyor belt assembly 1c, and an induction switch is provided at the output end position of the second conveying drive motor 1c1 of the second conveyor belt assembly 1c and the positions of the first intercepting device 1e and the second intercepting device 1f.

[0038] like Figure 8 and Figure 9As shown, the distance from the position of the second intercepting device 1f to the output end position of the second conveying drive motor 1c1 is equal to the distance between the two welding stations of the second welding station group B. After the cup body clamping device 10 clamps the two cup bodies 9, they can be directly placed on the two welding stations of the second welding station group B. Therefore, the position of the second intercepting device 1f can be adjusted to adapt to the changes in the distance difference between the two welding stations of the second welding station group B set in different models. The specific working method is: after the first interception device 1e position releases two cup bodies 9, the first interception device will work to intercept the subsequent cup bodies 9 to prevent the subsequent cup bodies 9 from continuing to be transmitted to the second conveyor belt assembly 1c. At the same time, the first conveyor belt assembly 1b stops running. When the first cup body 9 passes the second interception device 1f, it will slowly reach the output end position of the second transmission drive motor 1c1. When the second cup body 9 reaches the second interception device 1f position, it will be immediately intercepted and wait for the cup body clamping device 10 to simultaneously clamp the cup body 9 at the output end position of the second transmission drive motor 1c1 and the second interception device 1f position to the two welding stations of the second welding station group B, and then continue the next round of work. In this way, the first interception device 1e position releases two more cup bodies 9 to the second conveyor belt assembly 1c, and the cycle accurately completes the sorting of the cup bodies 9.

[0039] More preferably, the first intercepting device 1e includes an intercepting movable plate 1e1 and a first intercepting cylinder 1e2. The intercepting movable plate 1e1 can be rotatably set on the conveyor belt bracket 1a and is transmission-connected to the output end of the first intercepting cylinder 1e2. The intercepting movable plate 1e1 can be driven by the first intercepting cylinder 1e2, and its head end 1e1-1 and tail end 1e1-2 are respectively away from or close to the first conveyor belt assembly 1b or the second conveyor belt assembly 1c. Thus, the first intercepting cylinder 1e2 drives the intercepting movable plate 1e1 to move its head end 1e1-1 away from the second conveyor belt assembly 1c, allowing a cup body 9 to pass, while its tail end 1e1-2 is close to the first conveyor belt assembly 1b to intercept the subsequent cup body to continue to move forward, thereby improving the interception accuracy of the cup body 9.

[0040] More preferably, the second interception device 1f is equipped with a second interception cylinder, which releases or intercepts the cup body through the interception head at its output end. More preferably, the conveyor belt support 1a is equipped with a set of width-adjustable limit plates 1g, which are used to limit the position of cup bodies of different diameters. More preferably, each of the first conveyor belts 1b2 and each of the second conveyor belts 1c2 is equipped with a separate bearing on the driven shaft 1d for transmission, effectively preventing interference between the first conveyor belt 1b2 and the second conveyor belt 1c2 during operation.

[0041] More preferably, Figure 10As shown, the film conveying device 2 includes a film conveyor belt mechanism 2a and a film extraction mechanism 2b. The film conveyor belt mechanism 2a can adopt the same structure as the cup body conveyor belt device 1. The film extraction mechanism 2b is provided with two suction cups 2b1. The two suction cups 2b1 are arranged at the output end of the rotating cylinder 2b2. The rotating cylinder 2b2 is arranged at the output end of the suction cup up and down adjustment cylinder 2b3. The suction cup up and down adjustment cylinder 2b3 can be slidably arranged on the suction cup guide rail 2b4 through a slider, and is connected to the output end of the suction cup drive motor 2b5 arranged on the suction cup guide rail 2b4 through a synchronous belt drive.

[0042] More preferably, the film conveying device 2 also includes a film correction mechanism 2c arranged on the workbench 3, and the film correction mechanism 2c is provided with two correction cylinders, and correction heads are provided at the output ends of the two correction cylinders. After the film sucked up by the two suction cups 2b1 of the film extraction mechanism 2b is placed at the position of the first welding station group A, the correction head at the output end of the correction cylinder presses the film and the film placed on the cup body rotating fixing part 7a to prevent it from being skewed or not placed in place.

[0043] More preferably, Figure 11 As shown, the third welding station group C and the fourth welding station group D are further provided with a cup body clamping device 10 and a finished cup clamping device 11, respectively. The cup body clamping device 10 and the finished cup clamping device 11 have the same structure; the cup body clamping device 10 is provided with two groups of clamping manipulators 10a, and each group of clamping manipulators 10a is provided with a clamping cylinder 10b. The two groups of clamping cylinders 10b are provided at the output end of the clamping up and down adjusting cylinder 10c, and the clamping up and down adjusting cylinder 10c can be slidably provided on the position adjusting slide rail 10d through a slider, and is connected to the output end of the position adjusting motor 10e provided on the position adjusting slide rail 10d through a synchronous belt drive. During operation, two groups of clamping robots 10a clamp the cup body 9 at the position of the cup body conveyor device 1, and then drive it to the position of the third welding station group C through the position adjustment motor 10e and place it on the bottom film of the welding station and the cup body rotating fixed part 7a. At the same time, the position adjustment motor 10e drives the two groups of clamping robots 10a to reset and wait for the next round of clamping work.

[0044] More preferably, the laser welding device 6 includes a laser welding head 6a, which is slidably mounted on a movable block 6c via a slider and can be adjusted up and down by a first adjustment handle 6b. The movable block 6c is slidably mounted on the workbench 3 and can be adjusted away from or closer to the bottom sheet and the cup body rotation fixing portion 7a by a second adjustment handle 6d to weld the bottom sheet and the cup body. The position of the laser welding head 6a can be adjusted by the first adjustment handle 6b and the second adjustment handle 6d to accommodate welding of bottom sheets and cup bodies of different heights and sizes.

[0045] More preferably, the fourth welding station group D is further provided with an ejector device 12, comprising a pair of ejector rods 12a, the upper ends of which abut against the lower ends of the film holder fixing rods 7a1 provided on the two film and cup body rotation fixing portions 7a, which are transmitted to the fourth welding station group D. The ejector rods 12a are slidably mounted on the workbench 3 via guide rods and are in transmission connection with the output ends of an ejector drive motor 12c provided on the workbench 3. After the welding work is completed, the ejector drive motor 12c of the ejector device 12 drives the pair of ejector rods 12a upward, ejecting the film holder fixing rods 7a1 upward by a certain distance to facilitate demolding and clamping of the finished cup.

[0046] The foregoing description shows and describes preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the inventive concept described herein by the teachings above or by techniques or knowledge in the relevant art. Modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the appended claims.

Claims

1. An eight-station laser welding machine, comprising a cup body conveyor device (1), a film conveyor device (2), a workbench (3), a finished cup conveyor device (5), a laser welding device (6), a film and cup body rotation transmission device (7), and a control device; Its characteristics are: It also includes a driving wheel (4), which is rotatably arranged on the workbench (3) and is connected to a wheel drive motor (4b) arranged on the workbench (3) through a speed reduction commutator (4a). Eight welding stations are evenly arranged along the circumference of the driving wheel (4), and every two welding stations are divided into a group, totaling four welding station groups (A, B, C, D). The control device controls the driving wheel (4) to rotate the bottom film on the first welding station group (A) and the cup body on the second welding station group (B). In the third welding station group (C), the bottom film and the cup body are driven to rotate by the bottom film and the cup body rotation transmission device (7) while the bottom film and the cup body are welded by the laser welding device (6). The finished cup is taken out in the fourth welding station group (D). The bottom film and cup body rotation transmission device (7) comprises bottom film and cup body rotation fixing parts (7a) arranged at eight welding stations of the driving wheel (4) and two motor driving parts (7b) arranged at the position of the third welding station group (C), and the two motor driving parts (7b) are respectively connected to the two bottom film and cup body rotation fixing parts (7a) driven by the driving wheel (4) to the third welding station group (C) by friction transmission; The motor drive unit (7b) comprises a fixed plate (7b1) and a motor bracket (7b3), wherein the fixed plate (7b1) is fixedly arranged on the workbench (3), and the motor bracket (7b3) is slidably arranged on the fixed plate (7b1) via a slide rail, and a compression spring (7b7) is arranged between the motor bracket (7b3) and the fixed plate (7b1), and a driving motor (7b2) and a driving wheel shaft (7b4) are arranged on the motor bracket (7b3), and the output end of the driving motor (7b2) and the driving wheel shaft (7b4) are connected to each other via a synchronous belt (7b5), and a driving wheel shaft (7b4) is provided. A first driving wheel (7b6) is provided; the film and cup body rotation fixing portion (7a) comprises a film seat fixing rod (7a1), a mounting seat (7a6) and a second driving wheel (7a7); the second driving wheel (7a7) is provided on a fixing seat (7a8); the fixing seat (7a8) is rotatably fixed to the mounting seat (7a6) via a plurality of bearings; the upper end of the film seat fixing rod (7a1) passes through the upper end of the mounting seat (7a6); the spline rod portion at the lower end of the film seat fixing rod (7a1) is drivingly connected to the fixing seat (7a8); the second driving wheel (7a7) is frictionally connected to the first driving wheel (7b6); The film and cup body rotation fixing portion (7a) also includes a film seat fixing rod position adjustment portion, the film seat fixing rod position adjustment portion includes an adjustment seat (7a2), the film seat fixing rod (7a1) is rotatably arranged in the adjustment seat (7a2) through a plurality of bearings, the adjustment seat (7a2) is movably arranged in the mounting seat (7a6), and a support portion (7a3) that can be tightly held or released is further provided on the outer side of the adjustment seat (7a2), the support portion (7a3) is movably arranged on the mounting seat (7a6) through a guide rod with an upper end limit, and a reset spring (7a4) is further provided between the support portion (7a3) and the mounting seat (7a6).

2. The eight-station laser welding machine according to claim 1, characterized in that: The cup body conveyor belt device (1) is provided with a conveyor belt bracket (1a), and a first conveyor belt assembly (1b) and a second conveyor belt assembly (1c) are provided on the conveyor belt bracket (1a). The first conveyor belt assembly (1b) and the second conveyor belt assembly (1c) share a driven shaft (1d). The output end of the first conveyor drive motor (1b1) provided in the first conveyor belt assembly (1b) is connected to the bearing on the driven shaft (1d) through a plurality of first conveyor belts (1b2). The output end of the second conveyor drive motor (1c1) provided in the second conveyor belt assembly (1c) is connected to the bearing on the driven shaft (1d) through a plurality of second conveyor belts (1c2). The plurality of first conveyor belts (1b2) and the plurality of second conveyor belts (1c2) are arranged at intervals.

3. The eight-station laser welding machine according to claim 2, characterized in that: A first intercepting device (1e) is provided at the position of the driven shaft (1d) shared by the first conveyor belt assembly (1b) and the second conveyor belt assembly (1c); a second intercepting device (1f) is provided at a predetermined position on the second conveyor belt assembly (1c); and induction switches are provided at the output end of the second transmission drive motor (1c1) of the second conveyor belt assembly (1c) and at the positions of the first intercepting device (1e) and the second intercepting device (1f).

4. An eight-station laser welding machine according to any one of claims 1 to 3, characterized in that: The negative film conveying device (2) comprises a negative film conveyor belt mechanism (2a) and a negative film extraction mechanism (2b). The negative film extraction mechanism (2b) is provided with two suction cups (2b1). The two suction cups (2b1) are provided at the output end of a rotating cylinder (2b2). The rotating cylinder (2b2) ​​is provided at the output end of a suction cup vertical adjustment cylinder (2b3). The suction cup vertical adjustment cylinder (2b3) is slidably provided on a suction cup guide rail (2b4) via a slider and is connected to the output end of a suction cup drive motor (2b5) provided on the suction cup guide rail (2b4) via a synchronous belt transmission.

5. An eight-station laser welding machine according to any one of claims 1 to 3, characterized in that: The third welding station group (C) and the fourth welding station group (D) are also provided with a cup body clamping device (10) and a finished cup clamping device (11), respectively. The cup body clamping device (10) and the finished cup clamping device (11) have the same structure; the cup body clamping device (10) is provided with two groups of clamping manipulators (10a), and each group of clamping manipulators (10a) is provided with a clamping cylinder (10b). The two groups of clamping cylinders (10b) are provided at the output end of the clamping up and down adjustment cylinder (10c). The clamping up and down adjustment cylinder (10c) can be slidably provided on the position adjustment slide rail (10d) through a slider, and is connected to the output end of the position adjustment motor (10e) provided on the position adjustment slide rail (10d) through a synchronous belt transmission.

6. An eight-station laser welding machine according to any one of claims 1 to 3, characterized in that: The laser welding device (6) comprises a laser welding head (6a), which is slidably mounted on a movable block (6c) via a slider and can be adjusted up and down via a first adjustment handle (6b). The movable block (6c) can be slidably mounted on a workbench (3) and can be adjusted to move away from or closer to the bottom plate and the cup body rotating fixed portion (7a) via a second adjustment handle (6d) to weld the bottom plate and the cup body.

7. An eight-station laser welding machine according to any one of claims 1 to 3, characterized in that: The fourth welding station group (D) is also provided with an ejection device (12), the ejection device (12) comprising a pair of ejection rods (12a), the upper ends of the pair of ejection rods (12a) being in contact with the lower ends of the bottom film holder fixing rods (7a1) provided on the two bottom films and the cup body rotation fixing portion (7a) transmitted to the fourth welding station group (D), the ejection rods (12a) being slidable up and down on the workbench (3) via guide rods, and being transmission-connected to the output end of an ejection drive motor (12c) provided on the workbench (3).

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