Dual-station inverter welding equipment and use method thereof

Abstract

The invention discloses a double-station inverter welding device and a method for using the same, and relates to the technical field of welding equipment. The double-station inverter welding device is provided with two stations and a flipping space; the welding equipment comprises: a table, a welding assembly, two workpiece clamping assemblies, a frame driving device, a frame flipping driving device, and a fixture flipping driving assembly, and the workpiece clamping assembly comprises a clamping frame and a workpiece clamp rotatably connected to the clamping frame. The method for using the device comprises the following steps: the first clamping assembly welds, and the second clamping assembly flips in the opposite direction; the first clamping assembly flips forward, and the second clamping assembly welds; the first clamping assembly welds, and the second clamping assembly flips forward; the first clamping assembly loads, and the second clamping assembly welds; the first clamping assembly welds, and the second clamping assembly loads; the first clamping assembly flips in the opposite direction, and the second clamping assembly welds; the first clamping assembly welds, and the second clamping assembly flips in the opposite direction. The double-station alternating processing of this scheme can improve production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to double-station inverter welding equipment and a use method thereof. Background Art

[0002] As a converter that converts direct current into constant frequency and constant voltage or frequency and voltage adjustable alternating current, the inverter has a wide range of applications, a high utilization rate, and broad market prospects. Ensuring the accuracy of inverter processing is the key to improving the quality of the inverter.

[0003] The inverter includes an external shell and an internal circuit part. The external shell serves as a mounting support carrier and a protective structure for the internal circuit part. Therefore, ensuring the processing accuracy of the inverter shell is also one of the key factors to improve the quality of the inverter.

[0004] The inverter housing provided by the customer includes a housing body and end covers. There are two end covers, which are respectively arranged at both ends of the housing body in the length direction. The end covers are fixed to the housing body by welding.

[0005] In the prior art, the processing of the inverter housing designed by the customer generally adopts the method of workers welding the two ends of the housing body. However, since the inverter housing designed and manufactured by the customer is long, large in size and heavy in weight, welding the inverter housing horizontally will occupy a large plant space, and is not convenient for the layout of automated equipment or manual welding. Therefore, in order to ensure the quality of welding, the inverter housing usually needs to be placed vertically on the inverter welding fixture before welding. After welding one end of the inverter, it is necessary to weld the other end of the inverter. At this time, the staff needs to manually flip the inverter housing 180 degrees to interchange the upper and lower ends of the inverter housing. The manual flipping of the inverter housing brings a heavy workload to the staff, the labor intensity is extremely high, and work-related accidents are prone to occur. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a dual-station inverter welding device and a method of using the same to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0007] The solution of the present invention to solve its technical problem is:

[0008] A double-station inverter welding device having a first direction, a second direction, and an up-down direction;

[0009] The welding equipment is provided with a first station and a second station arranged along a first direction;

[0010] The welding equipment comprises:

[0011] A table top, wherein a turning space is provided below the table top;

[0012] A welding assembly installed above the table, wherein the first station and the second station are symmetrically arranged on both sides of the welding assembly; the welding assembly comprises a welding drive structure and a welding machine, wherein the welding drive structure drives the welding machine to move linearly along a first direction, a second direction, and an up-down direction and to rotate around an axis parallel to the up-down direction;

[0013] Two workpiece clamping assemblies, the two workpiece clamping assemblies are respectively located at the first station and the second station; the workpiece clamping assembly comprises a clamping frame and a plurality of workpiece clamps, the workpiece clamps are rotatably connected to the clamping frame;

[0014] A frame driving device, wherein the frame driving device is fixed relative to the table, and the frame driving device drives the workpiece clamping assembly to move along a first direction;

[0015] A frame turning driving device, wherein the frame turning driving device drives the workpiece clamping assembly to rotate around an axis parallel to the second direction;

[0016] A fixture flipping drive assembly, the fixture flipping drive assembly includes a fixture drive rack, a fixture drive gear, a staggered axis transmission system and a rack drive device; the fixture drive gear is rotatably installed on the clamping frame; the staggered axis transmission system is installed on the clamping frame, the staggered axis transmission system includes a staggered input shaft and a staggered output shaft, the staggered input shaft and the staggered output shaft are perpendicular to each other, and the staggered input shaft and the staggered output shaft are transmission connected; the staggered input shaft is fixed to the fixture drive gear, and the staggered output shaft is fixed to the workpiece fixture; the fixture drive rack extends along a first direction, and the fixture drive rack is used to rotate the fixture drive gear to drive the workpiece fixture to flip 180 degrees relative to the clamping frame; the rack drive device is fixed relative to the table, and the rack drive device drives the fixture drive rack to approach or move away from the fixture drive gear to control the meshing of the fixture drive rack and the fixture drive gear.

[0017] As a further improvement of the above technical solution, the rack drive device is an electric linear drive device.

[0018] As a further improvement of the above technical solution, the flipping space is fixedly provided with a first positioning groove and a second positioning groove, and the first positioning groove and the second positioning groove both extend along the first direction; the clamping frame protrudes with a first positioning protrusion, and the first positioning protrusion extends along the second direction, and the first positioning protrusion is plugged into and slidably connected with the first positioning groove; the workpiece clamp protrudes with a second positioning protrusion, and the second positioning protrusion extends up and down, and the second positioning protrusion is plugged into and slidably connected with the second positioning groove.

[0019] As a further improvement of the above technical solution, the openings of the first positioning groove and the second positioning groove toward the inner side of the flipping space are both trumpet-shaped.

[0020] As a further improvement of the above technical solution, the staggered axis transmission system includes two mutually meshing bevel gears, and the bevel gears are rotatably connected to the clamping frame.

[0021] As a further improvement of the above technical solution, the welding drive structure includes a first linear drive device, a second linear drive device, a third linear drive device and a first rotation drive device; the driving direction of the first linear drive device is parallel to the second direction, and the first rotation drive device is fixedly installed at the output end of the first linear drive device; the second linear drive device is fixedly installed at the output end of the first rotation drive device, and the first rotation drive device drives the second linear drive device to rotate around an axis parallel to the up and down directions; the driving direction of the second linear drive device is parallel to the up and down directions; the third linear drive device is installed at the output end of the second linear drive device, the driving direction of the third linear drive device is parallel to the first direction, and the welding machine is fixedly installed at the output end of the third linear drive device.

[0022] As a further improvement of the above technical solution, the clamp driving rack is arranged in the middle of the turning space.

[0023] As a further improvement of the above technical solution, the workpiece clamping assembly is provided with a straight line stroke, a fast flipping stroke, and a slow flipping stroke. The straight line stroke, the fast flipping stroke, and the slow flipping stroke are arranged in sequence from the outside to the inside of the flipping space. The clamp driving rack is located in the slow flipping stroke. The flipping speed of the workpiece clamping assembly in the fast flipping stroke is greater than the maximum flipping speed in the slow flipping stroke.

[0024] As a further improvement of the above technical solution, the two ends of the slow flipping stroke are respectively set as the first end and the second end, the first end is connected to the fast flipping stroke, and at the second end, the flipping speed of the workpiece clamping assembly is zero, and the speed between the first end and the second end changes linearly.

[0025] A method for using a double-station inverter welding device is applied to the double-station inverter welding device as described in any one of the above items, and the method for using the double-station inverter welding device comprises the following steps:

[0026] Loading: Place the inverter housing and end cover on the workpiece clamping assembly;

[0027] Welding: welding the inverter housing and end cover at the workpiece clamping assembly;

[0028] Flipping: driving the workpiece clamping assembly to move inwardly of the flipping space;

[0029] Drive the clamping frame to flip 90 degrees;

[0030] Drive the workpiece fixture to flip 180 degrees;

[0031] Driving the workpiece clamping assembly to move toward the outside of the flipping space;

[0032] Drive the clamping frame to continue to flip 90 degrees;

[0033] Place the end cap: Place the end cap on the inverter housing of the workpiece clamping assembly;

[0034] Take out the finished product: take out the finished product;

[0035] The two workpiece clamping assemblies are respectively set as a first clamping assembly and a second clamping assembly, and the use method cyclically performs the following steps:

[0036] The first clamping assembly takes the finished product and loads the material; the second clamping assembly places the end cover and welds the second clamping assembly;

[0037] The first clamping assembly is welded; the second clamping assembly is reversely flipped;

[0038] The first clamping assembly is turned forward; the second clamping assembly takes the finished product, the second clamping assembly loads the material, and the second clamping assembly is welded;

[0039] The first clamping assembly is placed on the end cover and the first clamping assembly is welded; the second clamping assembly is turned forward;

[0040] The first clamping assembly takes the finished product and loads the material; the second clamping assembly places the end cover and welds the second clamping assembly;

[0041] The first clamping assembly is welded; the second clamping assembly takes the finished product and the second clamping assembly is loaded with materials;

[0042] The first clamping assembly is reversed and turned over; the second clamping assembly is welded;

[0043] The first clamping assembly is placed on the end cover and welded; the second clamping assembly is reversely turned over.

[0044] The beneficial effects of the present invention are as follows: the present scheme adopts the form of double-station alternating processing. During the welding process of one workpiece clamping assembly, the other workpiece clamping assembly is flipped to effectively utilize the idle time during welding, which can improve the production efficiency of the inverter welding equipment to a certain extent, and the flipping process of the inverter is automatically completed by mechanical equipment, which can reduce the labor intensity of the staff and the probability of work-related accidents.

[0045] The invention is used in the technical field of welding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0047] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0048] Figure 2 is a schematic diagram of the overall structure of a welding assembly according to an embodiment of the present invention;

[0049] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present invention after the welding components and part of the frame are hidden;

[0050] Figure 4 is a schematic diagram of an exploded structure of a workpiece clamping assembly according to an embodiment of the present invention;

[0051] Figure 5 It is a partial structural schematic diagram of an embodiment of the present invention;

[0052] Figure 6 is a schematic cross-sectional structural diagram of a workpiece clamping assembly according to an embodiment of the present invention;

[0053] Figure 7 is a schematic diagram of a forward flipping process of a workpiece clamping assembly according to an embodiment of the present invention;

[0054] Figure 8 4 is a flow chart of a cyclic working process of a welding device according to an embodiment of the present invention.

[0055] In the figure, 100, a frame; 110, a turning space; 120, a second positioning groove; 130, a first positioning groove; 200, a table; 300, a welding assembly; 310, a welding machine; 320, a welding drive structure; 321, a first linear drive device; 322, a first rotary drive device; 323, a second linear drive device; 324, a third linear drive device; 400, a workpiece clamping assembly; 410, a clamping frame; 411, a first positioning protrusion; 412, a avoidance groove; 420, a workpiece fixture; 42 1. Connecting plate; 422. Clamp shaft; 423. Bottom supporting structure; 4231. Bottom supporting plate; 4232. Supporting plate driving device; 424. Second positioning protrusion; 425. Rotating and pressing clamp; 500. Frame flipping driving device; 610. Rack driving device; 620. Staggered axis transmission system; 621. Staggered output shaft; 622. Staggered input shaft; 623. Bevel gear; 630. Clamp driving gear; 640. Clamp driving rack; 700. Frame driving device; 710. Sliding frame. DETAILED DESCRIPTION

[0056] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0057] Reference Figure 1 The double-station inverter welding equipment has a first direction, a second direction and an up-down direction, and the first direction, the second direction and the up-down direction are perpendicular to each other. The first direction is parallel to the X-axis, the second direction is parallel to the Y-axis, and the up-down direction is parallel to the Z-axis.

[0058] The double-station inverter welding equipment is provided with a second station and a first station, and the second station and the first station are arranged along a first direction.

[0059] Reference Figure 1 , Figure 3 , Figure 6 The double-station inverter welding equipment includes a frame 100, a table 200, a welding assembly 300, a workpiece clamping assembly 400, a frame flipping driving device 500, a fixture flipping driving assembly, and a frame driving device 700.

[0060] Naturally, the lower end of the frame 100 is provided with rollers and a fixing structure to realize the movement and fixation of the double-station inverter welding equipment.

[0061] The table top 200 is fixedly connected to the upper end of the frame 100 . A turning space 110 is formed between the table top 200 and the frame 100 , and the turning space 110 is located below the table top 200 .

[0062] The welding assembly 300 is installed above the table 200 . Specifically, the welding assembly 300 includes a welding machine 310 and a welding driving structure 320 .

[0063] Reference Figure 2 The welding drive structure 320 drives the welding machine 310 to move linearly along the first direction, the second direction, and the up and down directions, and to rotate around an axis parallel to the up and down directions, so that the welding machine 310 can move back and forth between the first station and the second station, and move on the first station or the second station according to the set welding trajectory.

[0064] Specifically, in this embodiment, the welding drive structure 320 includes: a first linear drive device 321 , a first rotation drive device 322 , a second linear drive device 323 , and a third linear drive device 324 .

[0065] The first linear drive device 321 is set as a linear drive device, the driving direction of the first linear drive device 321 is parallel to the second direction, and the driving mode of the first linear drive device 321 is ball screw drive. The driving mode of the first linear drive device 321 is set as ball screw drive to ensure driving accuracy. In other embodiments, the driving mode of the first linear drive device 321 can also be set as a belt type or other driving modes. Those skilled in the art can select the driving mode of the first linear drive device 321 according to actual needs.

[0066] The first rotation driving device 322 is configured as a servo motor. The first rotation driving device 322 is fixedly mounted on the output end of the first linear driving device 321 . The driving direction of the first rotation driving device 322 is rotation around an axis parallel to the up-down direction.

[0067] The second linear drive device 323 is fixedly mounted on the output end of the first rotary drive device 322. The second linear drive device 323 is configured as a linear drive device, and the driving direction of the second linear drive device 323 is parallel to the up and down direction. Specifically, the driving mode of the second linear drive device 323 is also configured as a ball screw drive device.

[0068] The third linear drive device 324 is fixedly mounted on the output end of the second linear drive device 323. The third linear drive device 324 is configured as a linear drive device, and the driving direction of the third linear drive device 324 is parallel to the first direction. Specifically, the driving mode of the third linear drive device 324 is also configured as a ball screw drive device.

[0069] The welding machine 310 is fixedly installed at the output end of the third linear drive device 324 .

[0070] By setting the welding assembly 300 as a multi-axis linkage structure, the welding machine 310 can accurately cover the annular weld of the inverter housing end cover, and the first linear drive device 321, the second linear drive device 323 and the third linear drive device 324 are set as ball screw drive structures, which can effectively reduce the error of the motion trajectory of the welding machine 310.

[0071] Reference Figure 3 The frame driving device 700 is configured as a linear driving device. In this embodiment, the frame driving device 700 is a ball screw type linear module.

[0072] A sliding frame 710 is fixed to the output end of the frame driving device 700. The sliding frame 710 is slidingly connected to the frame 100. A guide rail is provided between the sliding frame 710 and the frame 100 for guiding, and the frame 100 is provided with a supporting platform for supporting the sliding frame 710. The frame driving device 700 drives the sliding frame 710 to move along a first direction.

[0073] The rack flip driving device 500 is fixedly mounted on the sliding frame 710, and the rack flip driving device 500 moves along the first direction along with the sliding frame 710. Specifically, the rack flip driving device 500 is configured as a servo motor.

[0074] Reference Figure 1 , Figure 4 and Figure 5 The workpiece clamping assembly 400 includes a clamping frame 410 and a workpiece clamp 420 .

[0075] The clamping frame 410 is movably connected to the frame 100, and the clamping frame 410 is fixedly connected to the output end of the frame flipping drive device 500. The frame flipping drive device 500 drives the clamping frame 410 to rotate around an axis parallel to the second direction, so that the clamping frame 410 flips, thereby causing the workpiece clamping assembly 400 to flip as a whole around an axis parallel to the second direction.

[0076] Specifically, in this embodiment, the clamping frame 410 is protrudingly provided with a first positioning protrusion 411. Specifically, the clamping frame 410 is provided with two first positioning protrusions 411 on each side in the second direction, and the two first positioning protrusions 411 are symmetrically arranged about the rotation axis of the clamping frame 410.

[0077] In this embodiment, the number of workpiece fixtures 420 is set to three, and the three workpiece fixtures 420 are arranged along the second direction. In other embodiments, the number of workpiece fixtures 420 can be selected according to actual needs. The three workpiece fixtures 420 are all rotatably connected to the clamping frame 410, and the rotation axis of the workpiece fixture 420 is perpendicular to the second direction.

[0078] Specifically, in this embodiment, the workpiece clamp 420 includes a connecting plate 421 , a clamp rotating shaft 422 , a bottom supporting structure 423 and a rotating pressing clamp 425 .

[0079] The number of the clamp shafts 422 is set to two, and the two clamp shafts 422 are fixedly connected to the connecting plate 421. The clamp shafts 422 are rotatably connected to the clamping frame 410, so that the workpiece clamp 420 can rotate relative to the clamping frame 410 around an axis perpendicular to the second direction.

[0080] The number of the rotating pressing clamps 425 is set to four, and the four rotating pressing clamps 425 are arranged in a rectangular shape at the four corners of the connecting plate 421. The rotating pressing clamps 425 are fixedly connected to the connecting plate 421, and the four rotating pressing clamps 425 respectively press four positions of the inverter housing to prevent the inverter housing from tipping over. The rotating pressing clamps 425 are prior art, and the specific structure of the rotating pressing clamps 425 will not be described in detail here.

[0081] The number of the bottom supporting structures 423 is set to two, and the two bottom supporting structures 423 are respectively arranged at the upper and lower ends of the connecting plate 421. The bottom supporting structure 423 includes a bottom supporting plate 4231 and a supporting plate driving device 4232. The supporting plate driving device 4232 is set as a linear driving device. The supporting plate is used for the driving device to drive the bottom supporting plate 4231 to protrude from the connecting plate 421 or be received in the connecting plate 421. When the bottom supporting plate 4231 protrudes from the connecting plate 421, the bottom supporting plate 4231 can support the lower end of the inverter housing, thereby realizing the limiting of the inverter housing. Specifically, only the bottom supporting plate 4231 located at the bottom protrudes from the connecting plate 421 to support the inverter housing to prevent the inverter housing from falling; while the bottom supporting plate 4231 located at the top does not protrude from the connecting plate 421 to avoid the bottom supporting plate 4231 from hindering the welding.

[0082] Specifically, the connecting plate 421 is fixedly provided with a second positioning protrusion 424, and the second positioning protrusion 424 extends to the outside of the clamping frame 410 (outside the area surrounded by the clamping frame 410), and the number of the second positioning protrusion 424 is set to two, and the two second positioning protrusions 424 are respectively arranged at the upper and lower ends of the connecting plate 421, and the second positioning protrusion 424 is eccentrically arranged on one side of the clamp rotating shaft 422.

[0083] Specifically, it is necessary to ensure that when the workpiece clamp 420 rotates relative to the clamping frame 410 , the two second positioning protrusions 424 will not interfere with the clamping frame 410 , so the clamping frame 410 is provided with a avoiding groove 412 for avoiding the second positioning protrusions 424 .

[0084] Specifically, in order to reduce the impact of the displacement caused by inertia of the workpiece fixture 420 on the clamping frame 410 when it is turned over, a buffer pad is fixedly arranged in the avoidance groove 412 (the buffer pad is not shown in the figure).

[0085] Reference Figure 1 , Figure 3 , Figure 6 , Figure 7 The fixture flipping driving assembly includes a rack driving device 610, a staggered axis transmission system 620, a fixture driving gear 630, and a fixture driving rack 640.

[0086] The clamp driving gear 630 is mounted on the clamping frame 410, and the clamp driving gear 630 is rotatably connected to the clamping frame 410. The clamp driving gear 630 is meshed with any clamp driving rack 640. The clamp driving gear 630 is fixedly connected to a sleeve, which is sleeved on the rotating shaft of the clamping frame 410 and penetrates into the inner side of the profile of the clamping frame 410.

[0087] The staggered shaft transmission system 620 includes a staggered output shaft 621, a staggered input shaft 622 and two bevel gears 623. The staggered output shaft 621, the staggered input shaft 622 and the bevel gears 623 are all installed in the clamping frame 410, and the staggered output shaft 621, the staggered input shaft 622 and the bevel gears 623 are all rotatably connected to the clamping frame 410. The axes of the staggered output shaft 621 and the staggered input shaft 622 are arranged perpendicular to each other. The number of the staggered output shafts 621 is set to four, one of which is rotatably connected to the clamping frame 410, and the other three staggered output shafts 621 are arranged one by one in correspondence with the workpiece fixture 420 in the same workpiece clamping assembly 400. The staggered output shaft 621 closest to the staggered input shaft 622 and the staggered input shaft 622 are respectively fixed to two bevel gears 623, the two bevel gears 623 are meshed with each other, and the two bevel gears 623 are the same components, so as to realize the transmission of power and staggered shaft transmission. The sleeve fixed to the fixture driving gear 630 is connected to the staggered input shaft 622 through components such as chains and sprockets (belt-type transmission can also be used), and the staggered input shaft 622 is connected to the fixture rotating shaft 422 of the workpiece fixture 420 through components such as chains and sprockets. The adjacent staggered output shafts 621 are driven by chains and sprockets, so that when the fixture driving gear 630 rotates, the staggered shaft transmission system 620 drives multiple workpiece fixtures 420 to rotate.

[0088] The rack drive device 610 is fixedly installed in the flipping space 110. Specifically, in this embodiment, the rack drive device 610 is a linear motor.

[0089] The clamp driving rack 640 is fixedly mounted on the frame 100 , and the clamp driving rack 640 extends along a first direction.

[0090] Specifically, in this embodiment, the fixture drive rack 640 is arranged in the middle of the flipping space 110. The fixture drive rack 640 is arranged in the middle of the flipping space 110 so that the workpiece fixture 420 starts to flip at a position close to the center inside the flipping space 110. This can leave enough cooling time for the inverter housing and can prevent the workpiece fixture 420 from flipping prematurely, resulting in part of the workpiece fixture 420 being exposed outside the flipping space 110 during flipping, thereby avoiding collisions with staff during the flipping process to avoid accidents.

[0091] Specifically, in the present embodiment, the number of the clamp driving racks 640 is set to two, the two clamp driving racks 640 are arranged at intervals in the upper and lower directions, and the two clamp driving racks 640 are symmetrically arranged in the upper and lower directions.

[0092] Specifically, the fixture drive rack 640 is arranged in the middle of the flipping space 110, and the fixture drive rack 640 is arranged in the middle of the flipping space 110, so that the workpiece fixture 420 starts to flip in the middle of the flipping space 110, leaving sufficient cooling time for the inverter housing, and avoiding the workpiece fixture 420 from flipping prematurely and causing part of it to be exposed outside the flipping space 110 during flipping, thereby avoiding collision with staff during the flipping process of the inverter housing to avoid accidents.

[0093] The two fixture drive racks 640 are respectively fixed to the output ends of the two rack drive devices 610 to control the movement of the two fixture drive racks 640, thereby controlling the fixture drive gear 630 to mesh with any fixture drive rack 640. Each fixture drive rack 640 drives the fixture drive gear 630 to rotate 90 degrees, so that the workpiece fixture 420 rotates 90 degrees during the process of retracting and extending, so as to achieve 180-degree flipping of the workpiece fixture 420. By setting it in this way, it is possible to avoid directly driving the workpiece fixture 420 to flip 180 degrees during the outward or return journey (the outward journey refers to the distance from the outside of the flipping space 110 to the inside of the flipping space 110 of the workpiece clamping assembly 400, and the return journey refers to the distance from the inside of the flipping space 110 to the outside of the flipping space 110 of the workpiece clamping assembly 400) to avoid the flipping speed being too fast, resulting in the inability to stop the flipping in time, thereby avoiding the workpiece fixture 420 from flipping too large an angle.

[0094] That is, during the outward journey, the clamping frame 410 flips 90 degrees and the workpiece clamp 420 flips 90 degrees; during the return journey, the clamping frame 410 flips an additional 90 degrees and the workpiece clamp 420 flips an additional 90 degrees, so that the flipping speed of the clamping frame 410 and the workpiece clamp 420 completes a 180-degree flip within two strokes, thereby reducing the flipping speed, reducing the impact of inertia on the workpiece clamping assembly 400, reducing impact, ensuring the accuracy of the flipping angle, and thus ensuring the normal operation of the equipment.

[0095] Specifically, in this embodiment, the frame 100 is fixedly provided with a second positioning groove 120 and a first positioning groove 130 , and both the second positioning groove 120 and the first positioning groove 130 extend along the first direction.

[0096] Specifically, the number of first positioning grooves 130 corresponding to each station is set to four, and the four first positioning grooves 130 are arranged in a rectangular shape and are symmetrically arranged in groups of two in the second direction. The first positioning protrusion 411 cooperates with the first positioning protrusion 411 provided on the clamping frame 410 to guide the clamping frame 410.

[0097] Specifically, the number of second positioning grooves 120 corresponding to each station is set to be multiple, and every four second positioning grooves 120 cooperate with one workpiece fixture 420. The four second positioning grooves 120 are arranged in a rectangular shape and are symmetrically arranged in groups of two in the vertical direction. The second positioning grooves 120 cooperate with the second positioning protrusions 424 provided on the workpiece fixture 420 to guide the workpiece fixture 420.

[0098] The openings of the second positioning groove 120 and the first positioning groove 130 toward the inner side of the flipping space 110 are both trumpet-shaped structures, so that the second positioning protrusion 424 can more easily enter the second positioning groove 120 and the first positioning protrusion 411 can more easily enter the first positioning groove 130, so that the workpiece fixture 420 and the clamping frame 410 can be adjusted to ensure the welding quality of the inverter.

[0099] By setting the first positioning protrusion 411, the second positioning protrusion 424, the first positioning groove 130, and the second positioning groove 120, the clamping frame 410 and the workpiece fixture 420 first move a certain distance in a straight line in the turning space 110 before starting to turn over, thereby avoiding the clamping frame 410 and the workpiece fixture 420 from turning over too early, resulting in partial exposure outside the turning space 110 during turning over, thereby avoiding collision with the staff during the turning process, so as to avoid accidents. At the same time, since the vibration of the machine during the movement of the clamping frame 410 may cause a slight deviation of the clamping frame 410, the first positioning protrusion 411 and the first positioning groove 130 can position and guide the clamping frame 410, and the second positioning protrusion 424 and the second positioning groove 120 can position and guide the workpiece fixture 420, so that the clamping frame 410 and the workpiece fixture 420 are in a vertical state when extending out of the turning space 110, so as to ensure the accuracy of welding, thereby ensuring the welding quality.

[0100] Specifically, in the present embodiment, the second positioning groove 120 and the first positioning groove 130 are both configured as blind grooves, and the notches of the second positioning groove 120 and the first positioning groove 130 face the inner side of the flipping space 110 .

[0101] Setting the second positioning groove 120 and the first positioning groove 130 as blind grooves can prevent the second positioning protrusion 424 from accidentally detaching from the second positioning groove 120 after extending out of the flipping space 110, and prevent the first positioning protrusion 411 from accidentally detaching from the first positioning groove 130 after detaching from the flipping space 110, thereby preventing the clamping frame 410 and the workpiece fixture 420 from accidentally flipping over, thereby ensuring the welding quality of the equipment to the inverter.

[0102] Specifically, in this embodiment, the openings of the second positioning groove 120 and the first positioning groove 130 are both set to be trumpet-shaped. The trumpet-shaped opening design can guide the second positioning protrusion 424 and the first positioning protrusion 411, so that the second positioning protrusion 424 can more easily enter the second positioning groove 120, and the first positioning protrusion 411 can more easily enter the first positioning groove 130.

[0103] When the clamping frame 410 moves to the designated position, the clamp driving gear 630 meshes with the clamp driving rack 640 , and the clamp driving gear 630 starts to rotate, thereby driving the workpiece clamp 420 to rotate relative to the clamping frame 410 .

[0104] Specifically, the workpiece clamping assembly 400 is provided with a linear stroke, a fast flip stroke, and a slow flip stroke, which are sequentially arranged from the outside of the flip space 110 to the inside of the flip space 110. The two ends of the slow flip stroke are respectively set as the second end and the first end, and the first end is connected to the fast flip stroke.

[0105] Within the linear travel, the frame driving device 700 drives the frame flipping driving device 500 and the workpiece clamping assembly 400 to perform linear motion along the first direction.

[0106] In the rapid flipping stroke, while the frame driving device 700 drives the frame flipping driving device 500 and the workpiece clamping assembly 400 to perform linear motion in the first direction, the frame flipping driving device 500 drives the workpiece clamping assembly 400 to rotate around an axis parallel to the second direction. At this time, the flipping speed of the workpiece clamping assembly 400 is set to the first speed (the first speed is the angular speed). At this time, since the fixture driving gear 630 is not engaged with the fixture driving rack 640, the workpiece clamp 420 will not flip relative to the clamping frame 410 in the rapid flipping stroke.

[0107] In the slow turning stroke, the frame driving device 700 drives the frame turning driving device 500 and the workpiece clamping assembly 400 to move linearly along the first direction, at which time the fixture driving gear 630 is meshed with the fixture driving rack 640, and driven by the staggered axis transmission system 620, during the movement of the workpiece clamping assembly 400 along the first direction, the clamping frame 410 turns around an axis parallel to the second direction, and the workpiece clamp 420 turns at a third speed relative to the clamping frame 410 around an axis perpendicular to the second direction. At the same time, the frame turning driving device 500 drives the workpiece clamping assembly 400 to rotate around an axis parallel to the second direction, so that the workpiece clamping assembly 400 turns around an axis parallel to the second direction at a second speed, and under the control of the frame driving device 700, the speed of the workpiece clamping assembly 400 moving along the first direction gradually decreases, so that the third speed gradually decreases, and at the same time, the second speed changes linearly and gradually decreases, and finally at the second end, the movement speed of the workpiece clamping assembly 400 along the first direction, the first speed, and the second speed are zero.

[0108] By setting a fast flipping stroke and a slow flipping stroke, and gradually decreasing the second speed and the third speed within the slow flipping stroke, a sudden drop in the movement speed of the clamping frame 410 and the workpiece fixture 420 can be avoided, thereby reducing the influence of inertia on the workpiece clamping assembly 400 and reducing the impact. The accuracy of the flipping angle can be guaranteed to a certain extent to avoid excessive flipping angles of the clamping frame 410 and the workpiece fixture 420 during the subsequent return stroke, thereby ensuring the normal operation of the equipment.

[0109] In order to simplify the drawings, the chain in this solution is not specifically shown in the drawings, but is simply represented by lines.

[0110] Reference Figures 1 to 8 Each workpiece clamping assembly 400 includes the steps of loading, welding, flipping, placing end covers, and taking finished products.

[0111] The loading step is that the staff places the inverter housing and the end cover on the workpiece clamping assembly 400 and fixes the inverter housing by the workpiece clamp 420.

[0112] The welding step is that the welding driving structure 320 drives the welding machine 310 to move above the workpiece clamping assembly 400, and makes the welding machine 310 move along a set path to weld and fix the inverter housing and the end cover.

[0113] The flipping steps are:

[0114] The frame driving device 700 drives the workpiece clamping assembly 400 to move toward the inside of the flipping space 110, so that the workpiece clamping assembly 400 performs linear motion along the first direction within the linear stroke;

[0115] When the workpiece clamping assembly 400 moves to the fast flipping stroke, the clamping frame 410 flips around an axis parallel to the second direction at a first speed;

[0116] When the workpiece clamping assembly 400 moves to the slow flipping stroke, the frame flipping driving device 500 drives the clamping frame 410 of the workpiece clamping assembly 400 to flip at the second speed, and the fixture driving rack 640 is engaged with the fixture driving gear 630, driving the workpiece clamp 420 to flip relative to the clamping frame 410 around an axis perpendicular to the second direction, so that the workpiece clamp 420 flips 90 degrees; and within the slow flipping stroke, the driving speeds of the frame driving device 700 and the frame flipping driving device 500 gradually decrease, so that the movement speed, the second speed, and the third speed of the workpiece clamping assembly 400 along the first direction gradually decrease linearly;

[0117] When the workpiece clamping assembly 400 moves to the second end, it pauses for a while to allow time to switch the fixture drive rack 640; the rack drive device 610 drives another fixture drive rack 640 to mesh with the fixture drive gear 630, so that the flipping direction of the workpiece clamp 420 during the return stroke is the same as the flipping direction during the outward stroke;

[0118] The frame driving device 700 drives the workpiece clamping assembly 400 to move toward the outside of the flipping space 110, and the frame flipping driving device 500 drives the clamping frame 410 to continue flipping 90 degrees (this flipping is in the same direction as the previous flipping). During the return journey, the frame flipping driving device 500 can drive the workpiece clamping assembly 400 to rotate at the first speed, so that the inverter housing on the workpiece clamping assembly 400 is turned upside down.

[0119] The step of placing the end cap is that the staff places the end cap on the inverter housing after turning it upside down. As a subsequent improvement of this solution, the end cap can also be placed on the inverter housing by a robot.

[0120] The step of taking out the finished product is that the staff takes out the finished product of the end caps with both ends welded from the workpiece fixture 420. Similarly, the subsequent improvement of this solution can also take out the finished product by a robot.

[0121] In order to conveniently describe and demonstrate the use process of the dual-station inverter welding equipment, the two workpiece clamping assemblies 400 are respectively configured as a first clamping assembly and a second clamping assembly.

[0122] The following describes in detail the use of the double-station inverter welding equipment based on the actual operation situation. The use of the double-station inverter welding equipment includes the following steps:

[0123] The staff first places the inverter housing and end cover on the first clamping assembly.

[0124] The welding driving structure 320 drives the welding machine 310 to move above the first clamping assembly, and the welding machine 310 welds the end cover on the first clamping assembly and the inverter housing.

[0125] The welding driving structure 320 drives the welding machine 310 to move above the second clamping assembly, and the welding machine 310 welds the end cover on the second clamping assembly and the inverter housing.

[0126] The frame driving device 700 drives the first clamping assembly to move toward the inside of the flipping space 110, so that the first clamping assembly performs a linear motion along a first direction within a linear stroke.

[0127] When the first clamping assembly moves to the fast flipping stroke, the clamping frame 410 flips at a first speed around an axis parallel to the second direction.

[0128] When the first clamping component moves to the slow flipping stroke, the frame flipping drive device 500 drives the clamping frame 410 of the first clamping component to flip at the second speed, and the clamp driving rack 640 engages with the clamp driving gear 630, driving the workpiece clamp 420 to flip relative to the clamping frame 410 around an axis perpendicular to the second direction, so that the workpiece clamp 420 flips 90 degrees in the forward direction; and within the slow flipping stroke, the driving speed of the frame driving device 700 and the frame flipping drive device 500 gradually decreases, so that the movement speed of the first clamping component along the first direction, the second speed, and the third speed gradually decrease linearly.

[0129] During the return journey, there is no requirement for a gradual speed change. In other embodiments, in order to ensure the accuracy of the flipping angle, the flipping speed of the clamping frame 410 and the workpiece fixture 420 can be adjusted by adjusting the driving speed of the frame flipping drive device 500 and the frame driving device 700, so that the flipping speed of the clamping frame 410 and the workpiece fixture 420 changes linearly.

[0130] When the first clamping assembly moves to the second end, it pauses for a while to allow time to switch the clamp drive rack 640; the rack drive device 610 drives another clamp drive rack 640 to engage with the clamp drive gear 630, so that the flipping direction of the workpiece clamp 420 during the return stroke is the same as the flipping direction during the outward stroke.

[0131] The frame driving device 700 drives the first clamping assembly to move toward the outside of the flipping space 110, and the frame flipping driving device 500 drives the clamping frame 410 to continue to flip forward 90 degrees (this flip is in the same direction as the previous flip). During the return journey, the frame flipping driving device 500 can drive the first clamping assembly to rotate at the first speed, so that the inverter housing on the first clamping assembly is turned upside down.

[0132] The step of loading the second clamping assembly is performed, and then the step of welding the second clamping assembly is performed. While welding the inverter housing of the second clamping assembly, the step of forward flipping the first clamping assembly is performed.

[0133] The staff places the end cap on the inverter housing of the first clamping component. During the process of placing the end cap, the welding drive structure 320 drives the welding machine 310 to move to the top of the first clamping component (the description of the movement of the welding machine 310 when the workstation is switched will be omitted later). After the end cap is placed, the welding step of the first clamping component is performed. When the welding step of the first clamping component is performed, the second clamping component performs the forward flipping step.

[0134] The staff takes out the finished product of the first clamping assembly, and then puts the new inverter housing and end cover into the first clamping assembly. At the same time, the staff puts the end cover into the second clamping assembly, and then performs the welding steps of the second clamping assembly.

[0135] The first clamping assembly performs the welding step, while the staff takes out the finished product of the second clamping assembly, and then completes the loading of the second clamping assembly.

[0136] The first clamping assembly flips over in the opposite direction, while the second clamping assembly performs a welding step;

[0137] The first clamping assembly places the end cover, and then the first clamping assembly is welded, while the reverse flipping step of the second clamping assembly is performed.

[0138] Then enter the working cycle.

[0139] The working cycle process is:

[0140] S001, the first clamping assembly takes the finished product and loads the material; the second clamping assembly places the end cover and welds the second clamping assembly;

[0141] S002, welding the first clamping assembly; and flipping the second clamping assembly in the opposite direction;

[0142] S003, the first clamping assembly is turned forward; the second clamping assembly takes the finished product, the second clamping assembly loads the material, and the second clamping assembly is welded;

[0143] S004, the first clamping assembly is placed on the end cover, and the first clamping assembly is welded; the second clamping assembly is turned forward;

[0144] S005, the first clamping assembly takes the finished product and loads the material; the second clamping assembly places the end cover and welds the second clamping assembly;

[0145] S006, welding of the first clamping assembly; taking of the finished product by the second clamping assembly and loading of the material by the second clamping assembly;

[0146] S007, the first clamping assembly is reversed and turned over; the second clamping assembly is welded;

[0147] S008, placing the end cover on the first clamping assembly, welding the first clamping assembly; and flipping the second clamping assembly in the opposite direction.

[0148] This solution adopts the form of double-station alternating processing. During the welding process of one workpiece clamping assembly 400, the other workpiece clamping assembly 400 is flipped to effectively utilize the idle time during welding, which can improve the production efficiency of the inverter welding equipment to a certain extent, and the flipping process of the inverter is automatically completed by mechanical equipment, which can reduce the labor intensity of the staff and the probability of work-related accidents.

[0149] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Dual-station inverter welding equipment, characterized by: Having a first direction, a second direction, and an up-down direction; The welding equipment is provided with a first station and a second station arranged along a first direction; Welding equipment includes: A table top with a turning space provided below the table top; A welding assembly is installed above the table, wherein the first station and the second station are symmetrically arranged on both sides of the welding assembly; the welding assembly comprises a welding drive structure and a welding machine, and the welding drive structure drives the welding machine to move linearly along a first direction, a second direction, and an up-down direction and to rotate around an axis parallel to the up-down direction; Two workpiece clamping assemblies, the two workpiece clamping assemblies are respectively located at a first station and a second station; the workpiece clamping assembly comprises a clamping frame and a plurality of workpiece clamps, and the workpiece clamps are rotatably connected to the clamping frame; A frame driving device, the frame driving device is fixed relative to the table, and a sliding frame is fixed to the output end of the frame driving device; A frame flipping driving device, the frame flipping driving device is fixedly mounted on the sliding frame, the frame flipping driving device drives the workpiece clamping assembly to rotate around an axis parallel to the second direction, and the frame driving device drives the sliding frame, the frame flipping driving device and the workpiece clamping assembly to move along the first direction; The fixture flipping drive assembly comprises a fixture driving rack, a fixture driving gear, a staggered shaft transmission system and a rack driving device; the fixture driving gear is fixedly connected to a sleeve, and the sleeve is sleeved on the rotating shaft of the clamping frame; the staggered shaft transmission system is installed on the clamping frame, and the staggered shaft transmission system comprises a staggered input shaft and a plurality of staggered output shafts, the staggered input shaft and the staggered output shafts are perpendicular to each other, and the staggered input shaft and the staggered output shaft are transmission-connected; the sleeve is transmission-connected to the staggered input shaft; one staggered output shaft is rotationally connected to the clamping frame, and the other staggered output shafts are arranged one-to-one corresponding to the workpiece fixtures of the same workpiece clamping assembly; when the fixture driving gear rotates, the multiple workpiece fixtures are driven to rotate through the staggered shaft transmission system; the rack driving device is fixed relative to the table, and the rack driving device drives the fixture driving rack to approach or move away from the fixture driving gear to control the meshing of the fixture driving rack and the fixture driving gear, the fixture driving rack extends along a first direction, and the fixture driving rack is used to drive the rotation of the fixture driving gear; The fixture drive rack is arranged in the middle of the flipping space; the number of the fixture drive racks is set to two, the two fixture drive racks are arranged at intervals along the upper and lower sides, and the two fixture drive racks are symmetrically arranged up and down, and each fixture drive rack drives the fixture drive gear to rotate 90 degrees respectively, thereby driving the workpiece fixture to flip 180 degrees relative to the clamping frame; The workpiece clamping assembly is provided with a linear stroke, a fast flipping stroke and a slow flipping stroke. The linear stroke, the fast flipping stroke and the slow flipping stroke are arranged in sequence from the outside of the flipping space to the inside of the flipping space. In the fast flipping stroke, the fixture drive gear is not engaged with the fixture drive rack. In the slow flipping stroke, the fixture drive gear is engaged with the fixture drive rack.

2. The double-station inverter welding equipment according to claim 1, characterized in that: The rack drive is an electric linear drive.

3. The double-station inverter welding equipment according to claim 1, characterized in that: The flipping space is fixedly provided with a first positioning groove and a second positioning groove, and both the first positioning groove and the second positioning groove extend along the first direction; the clamping frame is protruded with a first positioning protrusion, and the first positioning protrusion extends along the second direction, and the first positioning protrusion is plugged into and slidably connected with the first positioning groove; the workpiece clamp is protruded with a second positioning protrusion, and the second positioning protrusion extends up and down, and the second positioning protrusion is plugged into and slidably connected with the second positioning groove.

4. The double-station inverter welding equipment according to claim 3 is characterized in that: The openings of the first positioning groove and the second positioning groove toward the inner side of the flipping space are both trumpet-shaped.

5. The double-station inverter welding equipment according to claim 1, characterized in that: The staggered shaft transmission system comprises two mutually meshing bevel gears, and the bevel gears are rotationally connected to the clamping frame.

6. The double-station inverter welding equipment according to claim 1, characterized in that: The welding drive structure includes a first linear drive device, a second linear drive device, a third linear drive device and a first rotary drive device; the driving direction of the first linear drive device is parallel to the second direction, and the first rotary drive device is fixedly installed at the output end of the first linear drive device; the second linear drive device is fixedly installed at the output end of the first rotary drive device, and the first rotary drive device drives the second linear drive device to rotate around an axis parallel to the up and down directions; the driving direction of the second linear drive device is parallel to the up and down directions; the third linear drive device is installed at the output end of the second linear drive device, the driving direction of the third linear drive device is parallel to the first direction, and the welding machine is fixedly installed at the output end of the third linear drive device.

7. The double-station inverter welding equipment according to claim 1, characterized in that: The fixture driving rack is located within the slow turning stroke, and the turning speed of the workpiece clamping assembly within the fast turning stroke is greater than the maximum turning speed in the slow turning stroke.

8. The double-station inverter welding equipment according to claim 7, characterized in that: The two ends of the slow flipping stroke are respectively set as the first end and the second end, the first end is connected to the fast flipping stroke, at the second end, the flipping speed of the workpiece clamping assembly is zero, and the speed between the first end and the second end changes linearly.

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