Thermos cup automatic welding device

Abstract

The invention discloses an automatic welding device for a thermos cup, wherein a manipulator clamps the cup body and the cup bottom respectively and places them at two clamping devices for clamping, and after clamping, the first turntable rotates to the welding station for welding, and after welding is completed, the clamping device is released, and the lifting device lifts up the semi-finished product, and after lifting up, the first turntable rotates to the loading station and flips 180 degrees, and at the same time, the lifting device adjusts its position and the manipulator clamps the cup neck and places it in the second clamping hole and then clamps it, and then, the first turntable rotates forward or reverses to the welding station and opens the laser welding head for the second welding, and after welding, the two clamping devices are released and the finished product is lifted up by the lifting device, and after lifting up, the upper clamping device is clamped and then the first turntable rotates to the loading station and is clamped by the manipulator, and finally the upper clamping device is released and the finished product is pulled out and placed by the manipulator, the device realizes automatic welding, and realizes loading, unloading and reverse rotation at the same time through position switching, thereby greatly improving the welding efficiency.

Description

Technical Field

[0001] The invention relates to welding equipment, in particular to an automatic welding device for a thermos cup. Background Art

[0002] Thermos cups are used to keep stored water warm and are a very common daily necessity. During production, the cup neck and cup body, and the cup body and cup bottom need to be welded twice.

[0003] The patent with application number CN202122086305.7 discloses a welding device for a thermos cup, and the thermos cup stud welding device includes: a machine, a welding assembly, a rotating assembly, a clamping assembly and a feeding assembly. The machine is provided with a mounting surface; the welding assembly is located on the mounting surface; the rotating assembly is located on the mounting surface, and the rotating assembly is provided with a rotatable turntable; the clamping assembly is installed on the turntable for clamping the thermos cup; the feeding assembly is located on the mounting surface, and the feeding assembly is provided with a feeding pipe, and the feeding pipe is suitable for abutting the stud against the body of the thermos cup; the axis of the feeding pipe and the center of the turntable are located on the same straight line, and when the feeding pipe abuts the stud against the body of the thermos cup, the rotating assembly drives the thermos cup to rotate, and the welding assembly welds the thermos cup and the stud.

[0004] In addition, the patent with application number CN202011562551.9 discloses a straight-mouth welding device for a thermos cup, comprising a frame, a first lifting frame and a first lifting driver for driving the lifting frame to lift the frame, the first lifting frame being provided with a rotating mechanism, the rotating mechanism comprising a rotating disk for receiving the semi-finished thermos cup and a rotating disk drive assembly connected to the rotating disk, an insertion head for inserting into the mouth of the semi-finished thermos cup being installed on the frame through a first pin shaft, a welding mechanism for welding the straight-mouth part of the thermos cup being provided on one side of the frame, the welding head of the welding mechanism being located on the outside of the insertion head, and rolling wheels for rolling the welding part being provided around the insertion head.

[0005] In the above patents, the thermos cup is first moved to the welding station and fixed during welding, and then rotation welding is performed. Each patent only includes one station, and can only perform welding between two sections. Two devices are required for welding between three sections. In addition, the above equipment cannot realize automatic welding of two welds, and manual loading and unloading is required, resulting in low efficiency and high cost. Summary of the invention

[0006] Based on the shortcomings in the prior art that welding stations cannot perform two-pass welding, cannot perform automated welding, and require manual auxiliary welding, resulting in low efficiency, the present invention provides an automatic welding device for a thermos cup.

[0007] The technical solution adopted by the present invention to solve the above technical problems is:

[0008] Thermos cup automatic welding device, including:

[0009] The machine platform has a plurality of welding stations on its top surface, a loading station is provided between adjacent welding stations, the welding stations and the loading station are located on a concentric circle and a mounting column is provided at the center of the concentric circle;

[0010] The first turntable is arranged on the mounting column and has a plurality of first mounting arms radially arranged along the first turntable. A flip arm is rotatably arranged on the first mounting arm. A rotatable upper clamping device and a retractable positioning device are arranged on the flip arm. The upper clamping device has a first clamping hole passing through and the output end of the positioning device can extend below the first clamping hole for positioning support. Two symmetrical infrared rangefinders are arranged on the left and right side walls of the flip arm. The infrared rays emitted by the infrared rangefinder are irradiated on the top surface of the machine and reflected. The infrared rangefinder is used to detect whether the flip arm is horizontal;

[0011] The second turntable is rotatably mounted on the mounting column and has a plurality of second mounting arms radially arranged along the second turntable. The second mounting arms are provided with a rotatable lower clamping device and a jacking device. The lower clamping device has a second clamping hole and the output end of the jacking device can be extended into the second clamping hole for positioning support.

[0012] A rotation driving device, wherein the rotation driving device drives the first rotating disk to rotate;

[0013] A flip driving device, which is used to drive the flip arm to flip;

[0014] A laser welding machine is arranged on a machine platform;

[0015] Robots are installed outside the machine and their number is set according to demand;

[0016] The second clamping hole is located at the welding station, and the first clamping hole can be rotated to above the welding station and the loading station;

[0017] The number of manipulators, laser welders, first mounting arms, second mounting arms, welding stations and loading stations is the same. In addition, a controller is also included, which controls the operation of various electrical and pneumatic parts. In this scheme, at the initial position, the first mounting arms and the second mounting arms on the first turntable and the second turntable are staggered and located at the loading station and the welding station respectively. The manipulators clamp the cup body and the cup bottom respectively and place them in the clamping holes of the two clamping devices respectively and support the cup body and the cup bottom respectively through the positioning device and the lifting device. Then the two clamping devices clamp the cup body and the cup bottom. After clamping, the first turntable rotates to the welding station, the laser welding head is turned on, and then the two clamping devices rotate to weld the cup body and the cup bottom to form a semi-finished product. After welding is completed, the two clamping devices are loosened. Open, the lifting device lifts the semi-finished product. After lifting, the first turntable rotates to the loading station and flips 180 degrees. At the same time, the lifting device adjusts its position and the robot clamps the cup neck and places it in the second clamping hole and then clamps it. Then, the first turntable rotates forward or reverses to the welding station and opens the laser welding head for the second welding. After welding, the two clamping devices are released and the finished product is lifted by the lifting device. After lifting, the upper clamping device is clamped and then the first turntable rotates to the loading station and is clamped by the robot. Finally, the upper clamping device is released and the finished product is pulled out and placed by the robot.

[0018] Preferably, the manipulator, the laser welder, the first mounting arm, the second mounting arm, the welding station and the loading station are all four and are evenly distributed in a circular array, and the welding station and the loading station are staggered.

[0019] Preferably, the flip driving device is a flip motor or a flip cylinder.

[0020] Preferably, the upper clamping device and the lower clamping device are pneumatic chucks.

[0021] Preferably, two embedding holes are provided on the flip arm and the second connecting arm, the upper clamping device and the lower clamping device are extended into and rotatably arranged in one of the embedding holes and have an external gear ring, and a rotating motor is provided on the flip arm and the second connecting arm, the output shaft of the rotating motor extends into the other embedding hole and is connected to a gear, and the gear is engaged with the external gear ring to drive the upper clamping device and the lower clamping device to rotate.

[0022] Preferably, the lifting device is a push rod motor or a multi-stage cylinder arranged at the bottom of the second mounting arm, which provides a first positioning plane, a second positioning plane and a third positioning plane when it is extended and retracted. The first positioning plane performs height positioning and support on the cup bottom, the second positioning plane performs height positioning and support on the cup neck, and the third positioning plane is used for lifting and height positioning and support after the first welding. The lifting device is used to position the cup neck and the cup bottom to ensure that the welding line is at the same height. In addition, it is also used to eject the semi-finished product and the finished product after welding from the second clamping hole to avoid interference when the first turntable rotates.

[0023] Preferably, the flip arm is a three-section fold line structure and includes a first horizontal section, a vertical section and a second horizontal section connected in sequence, the upper clamping device is arranged on the second horizontal section, and the positioning device is arranged on the first horizontal section. The first horizontal section and the second horizontal section have a height difference, so that the second welding can be performed after one flip.

[0024] Preferably, the positioning device is an electric push rod or a telescopic cylinder, and a positioning plate is provided at the output end thereof. The positioning plate is used to support and position the welding end of the cup body.

[0025] Preferably, the laser welder is a laser welder with adjustable power, and when the first clamping hole is located at the welding station, the laser emitted by the laser welder forms an acute angle with the first mounting arm.

[0026] Preferably, the driving motor is a self-locking servo motor, and its output shaft is provided with a transmission gear in transmission connection with the first turntable, wherein the transmission gear of the first turntable is meshed with an angle sensor with a gear.

[0027] Compared with the prior art, the advantages of the present invention are as follows: in the present application, in the initial position, the first mounting arm and the second mounting arm on the first turntable and the second turntable are staggered and respectively located at the loading station and the welding station, the manipulator respectively clamps the cup body and the cup bottom and places them in the clamping holes of the two clamping devices respectively and supports the cup body and the cup bottom through the positioning device and the lifting device respectively, and then the two clamping devices clamp the cup body and the cup bottom, after clamping, the first turntable rotates to the welding station, the laser welding head is turned on, and then the two clamping devices rotate to weld the cup body and the cup bottom to form a semi-finished product, after welding is completed, the two clamping devices are loosened, the lifting device lifts the semi-finished product, and after lifting, the first turntable rotates to the loading station And flip 180 degrees. At the same time, the jacking device adjusts its position and the robot clamps the cup neck and places it in the second clamping hole and then clamps it. Then, the first turntable rotates forward or reverses to the welding station and opens the laser welding head for the second welding. After welding, the two clamping devices are released and the finished product is lifted up by the jacking device. After lifting, the upper clamping device is clamped and then the first turntable is rotated to the loading station and clamped by the robot. Finally, the upper clamping device is released and the finished product is pulled out and placed by the robot. The welding process realizes automated operation. In addition, through the continuous rotation and switching of the first turntable and the flipping of the rotating arm, loading, unloading and reverse rotation at different positions are carried out simultaneously, which greatly improves the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0029] Figure 1 A side view of the present application;

[0030] Figure 2 A top view of the present application;

[0031] Figure 3 A perspective view of the present application;

[0032] Figure 4 A perspective view of the present application;

[0033] Figure 5 This is the explosion diagram at the first turntable;

[0034] Figure 6 This is the explosion diagram at the second turntable;

[0035] In the figure: 01, loading station; 02, welding station; 10, machine; 20, first turntable; 201, first mounting arm; 202, flip arm; 203, flip drive device; 204, upper clamping device; 205, rotating motor; 206, embedding hole; 207, positioning device; 2071, positioning leveling plate; 208, rotating drive device; 30, second turntable; 301, second mounting arm; 302, lower clamping device; 303, lifting device; 40, column; 50, laser welder. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0037] Example

[0038] Automatic welding device for thermos cups, such as Figure 1-Figure 6 As shown, including:

[0039] The machine platform 10 has a plurality of welding stations 02 on its top surface, and a loading station 01 is provided between adjacent welding stations 02. The welding stations 02 and the loading station 01 are located on a concentric circle, and a mounting column 40 is provided at the center of the concentric circle.

[0040] The first turntable 20 is arranged on the mounting column 40, and has a plurality of first mounting arms 201 radially arranged along the first turntable 20. A flip arm 202 is rotatably arranged on the first mounting arm 201. A rotatable upper clamping device 204 and a retractable positioning device 207 are arranged on the flip arm 202. The upper clamping device 204 has a first clamping hole passing through it, and the output end of the positioning device 207 can extend below the first clamping hole for positioning support. Two symmetrical infrared rangefinders are arranged on the left and right side walls of the flip arm 202. The infrared rays emitted by the infrared rangefinders are irradiated on the top surface of the machine platform 10 and reflected. The infrared rangefinders are used to detect whether the flip arm 202 is horizontal;

[0041] The second turntable 30 is rotatably mounted on the mounting column 40 and has a plurality of second mounting arms 301 radially arranged along the second turntable 30. The second mounting arms 301 are provided with a rotatable lower clamping device 302 and a jacking device 303. The lower clamping device 302 has a second clamping hole and the output end of the jacking device 303 can be extended into the second clamping hole for positioning support.

[0042] A rotation drive device 208, the rotation drive device 208 drives the first turntable 20 to rotate. Preferably, the second turntable 30 is also rotatably disposed on the column 40 and is driven to rotate by another set of rotation drive devices 208;

[0043] A flip driving device 203, which is used to drive the flip arm 202 to flip;

[0044] A laser welding machine 50 is disposed on the machine platform 10;

[0045] A robot, which is arranged outside the machine 10, has multiple degrees of freedom and pneumatic grippers, and there are 8 of them, 4 of which are used for loading and unloading the cup body, and the other 4 are used for loading the cup bottom and cup neck;

[0046] The second clamping hole is located at welding station 02, and the first clamping hole can be rotated to above welding station 02 and loading station 01;

[0047] The number of manipulators, laser welders 50, first mounting arms 201, second mounting arms 301, welding stations 02 and loading stations 01 is the same. The first clamping hole and the second clamping hole have equal diameter sections, which are the same as the maximum diameter of the thermos cup so that the welded parts are in a vertical position when placed in the thermos cup. In addition, a controller is also included to control the operation of the electrical and pneumatic parts. In this solution, at the initial position, the first mounting arm 201 and the second mounting arm 301 on the first turntable 20 and the second turntable 30 are staggered and respectively located at the loading station 01 and the welding station 02. The manipulators respectively clamp the cup body and the cup bottom and place them in the clamping holes of the two clamping devices and respectively support the cup body and the cup bottom through the positioning device 207 and the lifting device 303. Then, the two clamping devices clamp the cup body and the cup bottom. After clamping, the first turntable 20 rotates to the welding station 02, the laser welding head is turned on, and then the two clamping devices rotate to weld the cup body and the cup bottom to form a semi-finished product. After welding is completed, the two clamping devices are released. The lifting device 303 lifts the semi-finished product. After lifting, the first turntable 20 rotates to the loading station 01 and flips 180 degrees. At the same time, the lifting device 303 adjusts its position and the robot clamps the cup neck and places it in the second clamping hole and then clamps it. Then, the first turntable 20 rotates forward or reverses to the welding station 02 and opens the laser welding head for the second welding. After welding, the two clamping devices are released and the finished product is lifted by the lifting device 303. After lifting, the upper clamping device 204 is clamped and then the first turntable 20 rotates to the loading station 01 and is clamped by the robot. Finally, the upper clamping device 204 is released and the finished product is pulled out and placed by the robot.

[0048] like Figure 2 and 3 As shown, the manipulator, the laser welder 50, the first mounting arm 201, the second mounting arm 301, the welding station 02 and the loading station 01 are all four and are evenly distributed in a circular array, and the welding station 02 and the loading station 01 are staggered.

[0049] like Figure 3 As shown, the turning drive device 203 is a turning motor or a turning cylinder.

[0050] like Figure 3 As shown, the upper clamping device 204 and the lower clamping device 302 are pneumatic chucks.

[0051] like Figure 5 As shown, two embedding holes 206 are provided on the flip arm 202 and the second connecting arm, the upper clamping device 204 and the lower clamping device 302 are extended into and rotatably arranged in one of the embedding holes 206 and have an outer gear ring, and a rotating motor 205 is provided on the flip arm 202 and the second connecting arm, and the output shaft of the rotating motor 205 is extended into the other embedding hole 206 and is connected to a gear, and the gear is meshed with the outer gear ring to drive the upper clamping device 204 and the lower clamping device 302 to rotate.

[0052] like Figure 6 As shown, the lifting device 303 is a push rod motor or a multi-stage cylinder arranged at the bottom of the second mounting arm 301, which provides a first positioning plane, a second positioning plane and a third positioning plane when it is extended and retracted. The first positioning plane is used to perform height positioning and support on the cup bottom, the second positioning plane is used to perform height positioning and support on the cup neck, and the third positioning plane is used for lifting and height positioning and support after the first welding. The lifting device 303 is used to position the cup neck and the cup bottom to ensure that the welding line is at the same height. In addition, it is also used to eject the semi-finished product and the finished product after welding from the second clamping hole to avoid interference when the first turntable 20 rotates.

[0053] like Figure 5 As shown, the flip arm 202 is a three-section broken line structure and includes a first horizontal section, a vertical section and a second horizontal section connected in sequence, the upper clamping device 204 is arranged on the second horizontal section, and the positioning device 207 is arranged on the first horizontal section. The first horizontal section and the second horizontal section have a height difference, so that the second welding can be performed after one flip.

[0054] like Figure 5 As shown, the positioning device 207 is an electric push rod or a telescopic cylinder, and its output end is provided with a positioning leveling plate 2071. The positioning leveling plate 2071 is used to support and position the welding end of the cup body.

[0055] like Figure 3 As shown, the laser welder 50 is a laser welder 50 with adjustable power. When the first clamping hole is located at the welding station 02 , the laser emitted by the laser welder 50 forms an acute angle with the first mounting arm 201 .

[0056] like Figure 4 As shown, the driving motor is a self-locking servo motor, and its output shaft is provided with a transmission gear in transmission connection with the first rotating disk 20, wherein the transmission gear of the first rotating disk 20 is meshed with an angle sensor with a gear.

[0057] In addition, a machine vision camera is set on the machine platform 10 to take real-time photos of the welding seam. When the opening is too large, the wire feeding speed is adjusted by adjusting the motor speed to adjust the rotation speed of the wire feeding roller in the laser welder 50 to adapt it. If the opening is too large, an alarm is issued and the laser welder 50 is shut down, and the parts to be welded are replaced by a robot.

[0058] The above is an introduction to the automatic welding device for thermos cups provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. The automatic welding device for thermos cups, characterized in that: include: The machine platform has a plurality of welding stations on its top surface, a loading station is provided between adjacent welding stations, the welding stations and the loading station are located on a concentric circle and a mounting column is provided at the center of the concentric circle; The first turntable is arranged on the mounting column and has a plurality of first mounting arms radially arranged on the first turntable, a flip arm is rotatably arranged on the first mounting arm, a rotatable upper clamping device and a retractable positioning device are arranged on the flip arm, the upper clamping device has a first clamping hole passing through, and the output end of the positioning device can extend to the bottom of the first clamping hole for positioning support; The second turntable is rotatably mounted on the mounting column and has a plurality of second mounting arms radially arranged along the second turntable. The second mounting arms are provided with a rotatable lower clamping device and a jacking device. The lower clamping device has a second clamping hole and the output end of the jacking device can be extended into the second clamping hole for positioning support. A rotation driving device, wherein the rotation driving device drives the first rotating disk to rotate; A flip driving device, which is used to drive the flip arm to flip; A laser welding machine is arranged on a machine platform; A robot arm, which is arranged outside the machine platform; The second clamping hole is located at the welding station, and the first clamping hole can be rotated to above the welding station and the loading station; The number of manipulators, laser welders, first mounting arms, second mounting arms, welding stations and loading stations is the same.

2. The automatic welding device for a thermos cup according to claim 1, characterized in that: The manipulator, the laser welder, the first mounting arm, the second mounting arm, the welding station and the loading station are all evenly distributed in four circular arrays, and the welding station and the loading station are staggered.

3. The automatic welding device for a thermos cup according to claim 1, characterized in that: The turning drive device is a turning motor or a turning cylinder.

4. The automatic welding device for a thermos cup according to claim 1, characterized in that: The upper clamping device and the lower clamping device are pneumatic chucks.

5. The automatic welding device for a thermos cup according to claim 4, characterized in that: Two embedding holes are provided on the flip arm and the second connecting arm. The upper clamping device and the lower clamping device are extended into and rotatably arranged in one of the embedding holes and have an external gear ring. A rotating motor is provided on the flip arm and the second connecting arm. The output shaft of the rotating motor extends into the other embedding hole and is connected to a gear. The gear is meshed with the external gear ring to drive the upper clamping device and the lower clamping device to rotate.

6. The automatic welding device for a thermos cup according to claim 1, characterized in that: The lifting device is a push rod motor or a multi-stage cylinder arranged at the bottom of the second mounting arm. When it is extended or retracted, it provides a first positioning plane, a second positioning plane and a third positioning plane. The first positioning plane performs height positioning and support on the cup bottom, the second positioning plane performs height positioning and support on the cup neck, and the third positioning plane is used for lifting, height positioning and support after the first welding.

7. The automatic welding device for a thermos cup according to claim 1, characterized in that: The flip arm is a three-section fold line structure and comprises a first horizontal section, a vertical section and a second horizontal section which are connected in sequence. The upper clamping device is arranged on the second horizontal section, and the positioning device is arranged on the first horizontal section.

8. The automatic welding device for a thermos cup according to claim 1 or 7, characterized in that: The positioning device is an electric push rod or a telescopic cylinder, and a positioning leveling plate is provided at the output end thereof.

9. The automatic welding device for a thermos cup according to claim 1, characterized in that: The laser welder is a power-adjustable laser welder. When the first clamping hole is located at the welding station, the laser emitted by the laser welder forms an acute angle with the first mounting arm.

10. The automatic welding device for a thermos cup according to claim 1, characterized in that: The driving motor is a self-locking servo motor, and a transmission gear in transmission connection is arranged on the output shaft of the driving motor and the first rotating disk, wherein an angle sensor with a gear is meshed on the transmission gear of the first rotating disk.

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