Multi-station frame assembly welding device

Abstract

The application discloses a kind of multi-station frame combination welding equipment, including multiple main frame and the main cover plate movably arranged thereon, further including welding table and the limiting mechanism for limiting multiple main frame on the top of which is arranged;Welding mechanism is arranged in welding table, and welding mechanism includes: multiple arc-shaped plates, and corresponding laser welding gun head is movably arranged on the arc-shaped side of each arc-shaped plate respectively.The multi-station frame combination welding equipment provided by the application is welded by multiple laser welding gun heads along the vertical direction and respectively movably arranged in the corner between corresponding main frame to weld the corner, and then multiple laser welding gun heads are moved along the arc-shaped side of corresponding arc-shaped plate and rotated respectively, so that the end of laser welding gun head and the welding seam between corresponding main frame and main cover plate maintain predetermined spacing and are welded, so that the edge seam is simultaneously welded in multiple stations to improve the welding quality of frame combination composed of main frame and main cover plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of frame welding, in particular to a multi-station frame combination welding equipment. BACKGROUND

[0002] In the process of producing large-scale mechanical equipment, etc., the equipment installation shell cover plate is needed, and in order to support the shell cover plate, the frame is generally used to support the cover plate, and the cover plate is welded on the frame, and then the shell of the equipment is formed by the cooperation of the cover plate and the frame.

[0003] According to the patent number CN218225338U, published (announced) on January 6, 2023, a frame welding tool clamp is disclosed, which comprises a frame and an inner support bar arranged on the frame; the welding tool clamp comprises a chassis and a first positioning clamp group, a second positioning clamp group, a third positioning clamp group and a fourth positioning clamp group arranged on the chassis for fixing the frame, and a first auxiliary clamp group and a second auxiliary clamp group for fixing the inner support bar.

[0004] In the prior art including the above patent, for the welding of frame and cover plate combination, a special clamp is generally used to splice multiple frame, and then a welding gun is used to weld multiple frame, and then the cover plate is placed on the welded frame, and the welding gun is used to weld the frame and the cover plate. When multiple frame is welded, multiple workers are needed to weld the cover plate and the frame at the same time to avoid uneven force on the cover plate, which affects the quality of the cover plate welding and the quality of the cover plate welding. It is difficult to ensure synchronization when multiple workers operate the welding station at the same time. SUMMARY

[0005] The purpose of the present application is to provide a multi-station frame combination welding equipment, which can simultaneously weld the cover plate and the frame combination in multiple stations, thereby improving the welding quality of the cover plate on the frame.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a multi-station frame combination welding equipment, comprising a plurality of main frame and a main cover plate movably arranged thereon, further comprising a welding table and a limiting mechanism arranged on the top of the welding table for limiting the plurality of main frame; the welding table is provided with a welding mechanism, and the welding mechanism comprises:

[0007] A plurality of arc-shaped plates, each arc-shaped side of which is movably provided with a corresponding laser welding gun head, and the plurality of laser welding gun heads comprise two stations:

[0008] The first station, a plurality of laser welding gun heads are movably arranged in the vertical direction between the corresponding corner of the main frame;

[0009] The second station, a plurality of laser welding gun heads are movably arranged along the arc side of the corresponding arc plate and rotate to keep the end of the laser welding gun head and the welding seam between the corresponding main frame and the main cover plate at a predetermined distance.

[0010] As a preferred, a plurality of corresponding and synchronous rotating lead screws are arranged in the rotating work cavity of the top of the welding table, the lead screws are provided with a block, and the lead screws rotate to drive the laser welding gun head to move along the arc surface of the arc plate.

[0011] As a preferred, the inner tooth opening arranged on the arc side of the arc plate is engaged with the force gear arranged on the rotating block, and the block moves along the arc surface of the arc plate to drive the force gear and make the laser welding gun head rotate.

[0012] As a preferred, an indirect gear is arranged in the rotating welding table, one of the lead screws is fixedly installed with a small gear matched with the indirect gear, and the driving rack arranged in the sliding welding table is engaged with the indirect gear.

[0013] As a preferred, a notch is arranged in the middle of the main tooth surface of the driving rack, and the driving rack moves to make the indirect gear rotate intermittently.

[0014] As a preferred, the limiting mechanism includes a functional table arranged in the sliding top of the welding table, the slide table is symmetrically arranged between the protrusions arranged symmetrically on the top of the functional table, and the two slide tables are relatively slid to push a plurality of main frames together.

[0015] As a preferred, the limiting mechanism further includes a pressing table movably arranged in the vertical direction on the top of the functional table, the main cover plate is movably arranged on the bottom of the pressing table to be synchronously lowered and attached to the main frame, and the negative pressure adsorption unit is arranged in the pressing table to adsorb the main cover plate.

[0016] As a preferred, the driving rack is kept in transmission between the push plate symmetrically arranged in the sliding outer wall of the relative two sides of the welding table, and the two push plates are respectively slid to the top of the slide table and slide together.

[0017] As a preferred, the lower driving plate and the pressing table symmetrically arranged in the sliding outer wall of the relative two sides of the welding table are kept in relative movement, and the driving rack is kept in transmission between the lower driving plate.

[0018] As a preferred, the functional table and the push plate are kept in relative movement, the functional table is kept in downward movement when the main cover plate is attached to the main frame, and the extrusion spring arranged between the lower driving plate and the bracket is extruded and stored.

[0019] In the above technical scheme, the present invention provides a multi-station frame combination welding device, which has the following beneficial effects: by splicing multiple main side frames, and then using a limiting mechanism to limit the main side frames, further, by using multiple laser welding gun heads to move in the vertical direction at the corners between the corresponding main side frames, and then welding the corners between each two main side frames to simultaneously perform welding between multiple main side frames, and then by using multiple laser welding gun heads to move and rotate along the arc side of the corresponding arc plate, so that the end of the laser welding gun head maintains a predetermined distance from the welding seam between the corresponding main side frame and the main cover plate and welds, thereby performing multi-station simultaneous welding of the side seam between the main side frame and the main cover plate, thereby improving the welding quality of the frame combination composed of the main side frame and the main cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the overall structure of a welding station provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the overall cross-sectional structure of a welding station provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of a partial cross-sectional structure of a welding station provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the cross-sectional structure of a main gear plate provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a top view of the functional platform provided in an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the top view of the welding platform provided in an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the structure of a laser welding gun head during movement provided by an embodiment of the present invention;

[0028] Figure 8 A schematic diagram of the enlarged structure of point A provided in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the enlarged structure of point B provided in an embodiment of the present invention;

[0030] Figure 10 Amplification structure schematic diagram provided at C of the embodiment of the present application;

[0031] Figure 11 Amplification structure schematic diagram provided at D of the embodiment of the present application;

[0032] Figure 12 Amplification structure schematic diagram provided at E of the embodiment of the present application;

[0033] Figure 13 Amplification structure schematic diagram provided at F of the embodiment of the present application;

[0034] Figure 14 Nut block moving path schematic diagram provided by the embodiment of the present application.

[0035] Legend:

[0036] 1, welding table; 2, function table; 3, sliding table; 4, pressing table; 5, hydraulic push rod; 6, bracket; 7, main edge frame; 8, laser welding gun head; 9, screw rod; 11, working cavity; 21, boss; 22, through slot; 23, auxiliary tooth plate; 24, guide table; 25, return spring; 26, direction changing gear; 31, inclined surface; 41, air pipe; 42, main tooth plate; 43, storage groove; 44, suction cup; 45, through hole; 46, guide hole; 47, negative pressure cavity; 48, spigot; 51, cross frame; 52, driving rack; 53, main tooth surface; 54, notch; 61, push plate; 62, second meshing tooth port; 63, mounting table; 64, extrusion spring; 65, lower driving plate; 66, first meshing tooth port; 67, first auxiliary gear; 68, pull spring; 71, main cover plate; 72, inclined surface part; 81, turntable; 82, second auxiliary shaft; 83, driving gear; 84, first auxiliary shaft; 85, pinion; 86, large gear; 87, force gear; 88, arc plate; 89, inner tooth port; 91, small gear; 92, wedge gear; 93, acceleration tooth disc; 94, indirect gear; 95, nut block; 96, supporting block; 97, insertion rod; 98, push spring. DETAILED DESCRIPTION

[0037] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0038] As Figures 1-13 shown, a multi-station edge frame combined welding device, comprising a plurality of main edge frames 7 and a main cover plate 71 movably arranged thereon, further comprising a welding table 1 and a limiting mechanism arranged on the top of the welding table 1 to limit the plurality of main edge frames 7; a welding mechanism is arranged in the welding table 1, and the welding mechanism comprises:

[0039] A plurality of arc-shaped plates 88, the arc-shaped side of each arc-shaped plate 88 movably provided with a corresponding laser welding gun head 8, the plurality of laser welding gun heads 8 including the following two stations:

[0040] The first station, the plurality of laser welding gun heads 8 movably arranged in the corners between the corresponding main edge frames 7 along the vertical direction;

[0041] The second station, the plurality of laser welding gun heads 8 move along the arc-shaped side of the corresponding arc-shaped plate 88 and rotate, so that the end of the laser welding gun head 8 and the welding seam between the corresponding main edge frame 7 and the main cover plate 71 maintain a predetermined distance.

[0042] Specifically, the plurality of main edge frames 7 can be limited by a limiting mechanism. The limiting mechanism can be a plurality of clamps cooperating with each other, or a plurality of electric push rods respectively pushing the limiting blocks to respectively push the plurality of main edge frames 7 for limiting. Alternatively, the limiting mechanism can be any way known to those skilled in the art for limiting the main edge frame 7.

[0043] Further, the arc-shaped plate 88 is fixedly installed on the welding table 1, the main edge frame 7 and the main cover plate 71 are respectively made of stainless steel, and the plurality of laser welding gun heads 8 are respectively connected to the corresponding laser welding machines.

[0044] The number of the plurality of main edge frames 7 can be three, four, or five. After the plurality of main edge frames 7 are spliced and welded, a triangular frame, a rectangular frame, or a pentagonal frame can be formed. The corresponding main cover plate 71 can be a triangular plate, a rectangular plate, or a pentagonal plate, and can match the main edge frame 7 after welding. The number of the plurality of laser welding gun heads 8 matches the number of the plurality of main edge frames 7.

[0045] The laser welding gun head 8 movably arranged in the corner between the corresponding main edge frame 7 along the vertical direction can be moved along the vertical direction by an electric push rod, or can be driven by a connecting rod and a gear. Alternatively, the laser welding gun head 8 movably arranged in the corner between the corresponding main edge frame 7 along the vertical direction can be any way known to those skilled in the art.

[0046] The plurality of laser welding gun heads 8 movably arranged along the arc-shaped side of the corresponding arc-shaped plate 88 can be provided with a sliding groove on the outer wall of the arc-shaped side of the arc-shaped plate 88, and a corresponding block is slidably arranged in the sliding groove. The laser welding gun head 8 rotates on the block, and when the block moves on the arc surface of the arc-shaped plate 88, the distance between the block and the main edge frame 7 changes. At this time, the laser welding gun head 8 rotates to maintain a predetermined distance between the end of the laser welding gun head 8 and the welding seam between the corresponding main edge frame 7 and the main cover plate 71, thereby ensuring stable welding of the plurality of laser welding gun heads 8. The predetermined distance can be 2mm-7mm.

[0047] The self-rotation of the laser welding gun head 8 can be driven by a motor, or by a gear rack and an electric push rod, or by any other method known to those skilled in the art.

[0048] In the above technical solution, the multiple main edge frames 7 are spliced together, and then the main edge frames 7 are positioned by the limiting mechanism. Further, the multiple laser welding gun heads 8 are respectively moved along the vertical direction to the corners between the corresponding main edge frames 7, so as to weld the corners between every two main edge frames 7 to simultaneously weld the multiple main edge frames 7. Then, the multiple laser welding gun heads 8 are moved along the arc-shaped side of the arc-shaped plate 88 and self-rotate, so that the end of the laser welding gun head 8 and the welding seam between the corresponding main edge frame 7 and the main cover plate 71 are kept at a predetermined interval and welded, thereby simultaneously welding the edge seam between the main edge frame 7 and the main cover plate 71 in multiple stations, and the welding quality of the edge frame combination composed of the main edge frame 7 and the main cover plate 71 is improved.

[0049] As a further embodiment of the present application, multiple lead screws 9 corresponding to the laser welding gun head 8 are rotatably arranged in the working cavity 11 on the top of the welding table 1 and synchronously rotate. A nut block 96 is arranged on the lead screw 9, and the lead screw 9 rotates to move the nut block 96 and the laser welding gun head 8 along the arc surface of the arc-shaped plate 88.

[0050] Specifically, multiple nut blocks 95 are threadedly arranged on the multiple lead screws 9, and the nut blocks 95 are slidably arranged in the working cavity 11. Insert rods 97 fixedly installed on the nut block 96 are slidably arranged in the nut block 95. A push spring 98 is fixedly installed on the first end of the insert rod 97 and on the nut block 95. The push spring 98 pushes the nut block 96 to make it adhere to the arc surface of the arc-shaped plate 88. The laser welding gun head 8 rotatably arranged on the nut block 96 corresponds to the lead screw 9. When the multiple lead screws 9 synchronously rotate, the multiple nut blocks 95 threadedly rotate on the corresponding lead screws 9, and the nut blocks 95 slide to move the nut block 96 on the arc surface of the arc-shaped plate 88, cooperating with the self-rotation of the laser welding gun head 8 on the nut block 96, so as to move the laser welding gun head 8 for welding.

[0051] The synchronous rotation of the multiple lead screws 9 can be driven by a motor, or by a belt transmission between multiple friction wheels to synchronously rotate the multiple lead screws 9, or by any other method known to those skilled in the art.

[0052] As another embodiment of the present application, the inner tooth 89 arranged on the arc-shaped side of the arc-shaped plate 88 is engaged with the stress gear 87 rotatably arranged on the nut block 96. The nut block 96 moves along the arc surface of the arc-shaped plate 88 to push the stress gear 87 and make the laser welding gun head 8 rotate.

[0053] Specifically, the four screw rods 9 are arranged in a rectangular shape, and each of the screw rods 9 is rotatably arranged in the working cavity 11. The end of each two adjacent screw rods 9 is fixedly installed with a bevel gear 92. The two bevel gears 92 are engaged with each other. When one of the screw rods 9 is driven to rotate, the plurality of screw rods 9 simultaneously rotate. As shown by the arrow in Figure 14 , when the screw rod 9 rotates, the nut block 95 is screwed on the screw rod 9. At this time, the four laser welding gun heads 8 on the nut block 95 move clockwise, thereby synchronously welding the rectangular frame composed of the four main frame 7.

[0054] Further, when the nut block 95 drives the laser welding gun head 8 to move, as shown in Figure 10 , the force gear 87 rotatably arranged on the supporting block 96 is engaged with the inner tooth 89. The first auxiliary shaft 84 and the second auxiliary shaft 82 are rotatably arranged in the supporting block 96. The outer wall of the first auxiliary shaft 84 is fixedly installed with a pinion 85 and a gear 86. The outer wall of the second auxiliary shaft 82 is fixedly installed with a driving gear 83. The top end of the second auxiliary shaft 82 is fixedly installed with a turntable 81. The force gear 87 is engaged with the gear 86, and the pinion 85 is engaged with the driving gear 83. The force of the pinion 85 and the gear 86 is transmitted to reduce the rotation amplitude of the second auxiliary shaft 82 when the force gear 87 rotates, thereby realizing the small amplitude swing of the laser welding gun head 8 fixedly installed on the top of the turntable 81 to weld the edge seam between the main frame 7 and the main cover plate 71.

[0055] One of the screw rods 9 can be driven to rotate by a motor. The plurality of screw rods 9 can be synchronously rotated by the engagement between the bevel gears 92 fixedly installed at the ends of each two adjacent screw rods 9. The plurality of nut blocks 95 can be synchronously screwed on the screw rods 9.

[0056] As another embodiment of the present application, an indirect gear 94 is rotatably arranged in the welding table 1. A small gear 91 is fixedly installed on one of the screw rods 9. The driving rack 52 slidably arranged in the welding table 1 is engaged with the indirect gear 94.

[0057] Specifically, the shaft of the indirect gear 94 is fixedly installed with the accelerating gear disc 93, and the accelerating gear disc 93 is engaged with the small gear 91 fixedly installed on one of the lead screws 9, so that when the driving rack 52 is driven to move to be engaged with the indirect gear 94, the indirect gear 94 rotates to drive the accelerating gear disc 93 to rotate and be engaged with the small gear 91, at this time, one of the lead screws 9 rotates, and then the end wedge gears 92 between every two adjacent lead screws 9 are engaged with each other, so that the plurality of lead screws 9 can rotate synchronously, and the plurality of nut blocks 95 can rotate synchronously on the lead screws 9.

[0058] Further, the number of teeth of the accelerating gear disc 93 is more than that of the indirect gear 94 and the small gear 91, and the accelerating gear disc 93 and the indirect gear 94 are coaxial, so that when the indirect gear 94 rotates, the rotating speed of the small gear 91 is accelerated through the accelerating gear disc 93.

[0059] The driving rack 52 can be moved by an electric push rod, or by a motor cooperating with a gear, or by a manner known to those skilled in the art.

[0060] As the optimal embodiment provided by the application, the middle part of the main tooth surface 53 provided on the driving rack 52 is provided with the notch 54, and the driving rack 52 is moved to make the indirect gear 94 rotate intermittently.

[0061] Specifically, when the four main edge frames 7 are spliced to form a rectangle and the main cover plate 71 is placed on the top of the four main edge frames 7, at this time, the spliced four main edge frames 7 and the main cover plate 71 are moved along the vertical direction to be close to the laser welding gun heads 8, the four laser welding gun heads 8 are respectively located at the corners between every two adjacent main edge frames 7, the laser welding gun heads 8 are opened to move along the bottom end to the top end of the corner by using the laser welding gun heads 8, so as to realize welding at the corner, when the end of the laser welding gun head 8 moves to the top end of the corner, at this time, the driving rack 52 is driven to move to be engaged with the indirect gear 94, the indirect gear 94 rotates to drive the accelerating gear disc 93 to rotate and be engaged with the small gear 91, at this time, one of the lead screws 9 rotates, and then the end wedge gears 92 between every two adjacent lead screws 9 are engaged with each other, so that the plurality of lead screws 9 can rotate synchronously, at this time, the plurality of nut blocks 95 respectively rotate on the corresponding lead screws 9 and slide in the working cavities 11, the supporting blocks 96 are located on the arc surface of the arc plate 88 by using the push spring 98 to push the supporting block 96.

[0062] Further, when the nut block 95 drives the laser welding gun head 8 to move, at this time, as Figure 10As shown, the force gear 87 rotatably arranged on the support block 96 is engaged with the inner tooth 89 to rotate, the force gear 87 is engaged with the large gear 86, and the pinion 85 is engaged with the driving gear 83, thereby realizing the small amplitude swing of the laser welding gun head 8 fixedly installed on the rotating disc 81 at the top end of the second auxiliary shaft 82, and the laser welding gun head 8 is driven by the nut block 95 to move to weld the edge seam between the main frame 7 and the main cover plate 71.

[0063] As shown, the force gear 87 rotatably arranged on the support block 96 is engaged with the inner tooth 89 to rotate, the force gear 87 is engaged with the large gear 86, and the pinion 85 is engaged with the driving gear 83, thereby realizing the small amplitude swing of the laser welding gun head 8 fixedly installed on the rotating disc 81 at the top end of the second auxiliary shaft 82, and the laser welding gun head 8 is driven by the nut block 95 to move to weld the edge seam between the main frame 7 and the main cover plate 71. Figure 11 As shown, the force gear 87 rotatably arranged on the support block 96 is engaged with the inner tooth 89 to rotate, the force gear 87 is engaged with the large gear 86, and the pinion 85 is engaged with the driving gear 83, thereby realizing the small amplitude swing of the laser welding gun head 8 fixedly installed on the rotating disc 81 at the top end of the second auxiliary shaft 82, and the laser welding gun head 8 is driven by the nut block 95 to move to weld the edge seam between the main frame 7 and the main cover plate 71. Figure 7 As shown, the force gear 87 rotatably arranged on the support block 96 is engaged with the inner tooth 89 to rotate, the force gear 87 is engaged with the large gear 86, and the pinion 85 is engaged with the driving gear 83, thereby realizing the small amplitude swing of the laser welding gun head 8 fixedly installed on the rotating disc 81 at the top end of the second auxiliary shaft 82, and the laser welding gun head 8 is driven by the nut block 95 to move to weld the edge seam between the main frame 7 and the main cover plate 71.

[0064] As an embodiment of the present application, the limiting mechanism comprises a functional table 2 slidably arranged on the top of the welding table 1, and a slide table 3 is symmetrically slidably arranged between the bosses 21 on the top of the functional table 2, and the slide table 3 is relatively slid to push a plurality of main frames 7 together.

[0065] Specifically, the through slot 22 is arranged on the top of the functional table 2 between the two bosses 21 and the two slide tables 3, and is connected and matched with the working cavity 11, two main frames 7 are placed on the adjacent side of the two bosses 21 on the top of the functional table 2, and then the two main frames 7 are placed on the adjacent side of the two slide tables 3, the two slide tables 3 are simultaneously driven to relatively slide and approach each other, at this time, the two slide tables 3 respectively push the main frames 7 to approach the main frames 7 on the side of the two bosses 21, as shown in Figure 5The two ends of the main edge frame 7 are respectively provided with inclined surface parts 72, when the four main edge frames 7 are close to each other, the inclined surface parts 72 are mutually extruded and abutted, so that the main edge frame 7 can be stably abutted on the outer wall of one side of the boss 21, and the four main edge frames 7 are matched to form a rectangle.

[0066] Then, the function table 2 is driven to move in the vertical direction to drive the assembled main edge frame 7 to move downward to be close to the laser welding gun head 8, at this time, the four laser welding gun heads 8 are respectively located on the side of the corner formed by the abutment of the inclined surface parts 72 on each two main edge frames 7 along the through slot 22 on the function table 2, and in the process of moving downward of the function table 2, the four laser welding gun heads 8 are opened to synchronously and multi-station weld the four corners formed by the assembly of the main edge frame 7, so as to connect and fix the plurality of main edge frames 7.

[0067] The function table 2 can be driven to move in the vertical direction by an electric push rod, or by a motor cooperating with a gear, or by a way known to those skilled in the art.

[0068] The relative sliding of the two sliding tables 3 to be close to each other can be by the respective pushing of the two electric push rods, or by the pushing of a motor cooperating with a gear and a connecting rod, or by a way known to those skilled in the art.

[0069] As another embodiment provided by the application, the limiting mechanism further comprises a pressing table 4 movably arranged on the top of the function table 2 in the vertical direction, and the main cover plate 71 is movably arranged on the bottom of the pressing table 4 to be synchronously moved downward and abutted on the main edge frame 7, and the pressing table 4 is provided with a negative pressure suction unit for suctioning the main cover plate 71.

[0070] Specifically, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 8 , the bottom of the pressing table 4 is provided with a receiving groove 43 matched with the main cover plate 71, the negative pressure suction unit comprises a plurality of suction cups 44 fixedly installed in the receiving groove 43 and a negative pressure cavity 47 formed in the pressing table 4, the bottom of the suction cup 44 is provided with a through hole 45, the through hole 45 is respectively communicated with the negative pressure cavity 47 through a guide hole 46 formed in the pressing table 4, the inner wall of one side of the negative pressure cavity 47 is symmetrically provided with a socket part 48, the socket part 48 is communicated with an air pipe 41, and the air pipe 41 is respectively communicated with a vacuum machine negative pressure pump.

[0071] By placing the main cover plate 71 in the receiving groove 43, at this time by using the vacuum machine negative pressure pump to form negative pressure in the negative pressure cavity 47, the main cover plate 71 on one side of the suction cup 44 is sucked along the perforated hole 45 through the negative pressure cavity 47 and the plurality of guide holes 46, and then the main cover plate 71 is adsorbed on the plurality of suction cups 44 and is attached to the pressing table 4. Then, by driving the pressing table 4 to move in the vertical direction to synchronously drive the main cover plate 71 to move on the top of the function table 2, and then when the splicing between the plurality of main edge frames 7 is completed, the pressing table 4 is driven to move downward to make the main cover plate 71 attached to the plurality of main edge frames 7, so as to facilitate the subsequent welding of the edge seam between the main edge frame 7 and the main cover plate 71.

[0072] The driving of the pressing table 4 to move in the vertical direction can be achieved by an electric push rod, or by a motor cooperating with a gear, or by any other means known to those skilled in the art.

[0073] As further provided by the present application, the two push plates 61 symmetrically arranged on the outer wall of the welding table 1 relative to both sides are in driving transmission with the driving racks 52, and the two push plates 61 are respectively arranged at the top of the sliding table 3 to slide close to each other.

[0074] Specifically, as shown in Figure 2 and Figure 9 , the hydraulic push rod 5 is fixedly installed in the welding table 1, the output end of the hydraulic push rod 5 is fixedly installed with the cross frame 51, the bracket 6 is slidably arranged in the welding table 1, the two push plates 61 are respectively fixedly installed on the bracket 6, a plurality of tension springs 68 are arranged between the cross frame 51 and the bracket 6, and the two ends of the tension spring 68 are respectively fixedly installed on the cross frame 51 and the bracket 6, one side of the two sliding tables 3 is respectively provided with an inclined surface 31, and the top of the push plate 61 is movably arranged on the inclined surface 31, as shown in Figure 2 , two driving racks 52 are symmetrically fixedly installed on the cross frame 51, when the hydraulic push rod 5 pushes the cross frame 51 to move upward, the push plate 61 on the bracket 6 is also moved, so that the push plate 61 and the driving rack 52 are in corresponding transmission.

[0075] By placing the two main edge frames 7 on the two adjacent sides of the protrusions 21 on the top of the function table 2, and then placing the two main edge frames 7 on the two adjacent sides of the sliding tables 3, and then pushing the cross frame 51 upward by the hydraulic push rod 5 to drive the bracket 6 to move upward, at this time the top of the two push plates 61 on the bracket 6 is respectively slid on the inclined surface 31, so that the two sliding tables 3 are synchronously relatively slid to close to each other, and the two sliding tables 3 respectively push the main edge frames 7 on one side of them, so that the two main edge frames 7 are close to and attached to the main edge frames 7 on one side of the two protrusions 21, so as to facilitate the subsequent welding of the main edge frames 7.

[0076] As another embodiment provided by the present application, the lower driving plate 65 and the pressing table 4 are kept relative movement, and the transmission is kept between the lower driving plate 65 and the driving rack 52.

[0077] Specifically, as shown in Figure 1 and Figure 4 two bosses 21 are respectively provided with a guide table 24, the pressing table 4 is respectively slidably arranged on the two guide tables 24, the bottom of the pressing table 4 is symmetrically provided with a main gear plate 42, the first auxiliary gear 67 is respectively rotatably arranged in the two guide tables 24, and the two first auxiliary gears 67 are respectively engaged with the main gear plate 42, the bracket 6 is symmetrically provided with a mounting table 63, the two lower driving plates 65 are respectively slidably arranged on the two corresponding mounting tables 63, the extrusion spring 64 is arranged between the bottom end of the lower driving plate 65 and the mounting table 63, and the two ends of the extrusion spring 64 are respectively fixedly arranged on the lower driving plate 65 and the mounting table 63, and the first meshing tooth gap 66 arranged on one side of the outer wall of the lower driving plate 65 is engaged with the first auxiliary gear 67. When the hydraulic push rod 5 pushes the horizontal frame 51 to move upwards, the lower driving plate 65 on the bracket 6 is driven to move, so that the transmission is kept between the lower driving plate 65 and the driving rack 52.

[0078] Further, since the lower driving plate 65 is arranged on the bracket 6, the two main edge frames 7 are placed on the adjacent side of the two bosses 21 on the top of the function table 2, and then the two main edge frames 7 are placed on the adjacent side of the two sliding tables 3, and the main cover plate 71 is placed in the storage groove 43. At this time, the negative pressure cavity 47 is formed by using the vacuum machine negative pressure pump to form negative pressure, and the main cover plate 71 on one side of the suction cup 44 is sucked along the perforated hole 45 through the negative pressure cavity 47 and the plurality of guide holes 46, so that the main cover plate 71 is adsorbed on the plurality of suction cups 44 and is attached to the pressing table 4. Then, the hydraulic push rod 5 pushes the horizontal frame 51 to move upwards, and the bracket 6 is driven to move upwards by the pulling spring 68. At this time, the top of the two push plates 61 on the bracket 6 is respectively slidably arranged on the inclined surface 31, so that the two sliding tables 3 are synchronously relatively slid to close, and the two sliding tables 3 respectively push the main edge frame 7 on one side thereof, so that the two main edge frames 7 are close to and attached to the main edge frame 7 on one side of the two bosses 21, so as to facilitate the subsequent welding of the main edge frame 7.

[0079] Further, as shown in Figure 4The lower drive plate 65 shown moves up synchronously with the bracket 6 to make the first meshing tooth opening 66 and the first auxiliary gear 67 mesh to drive the first auxiliary gear 67 to rotate, and then the first auxiliary gear 67 and the main gear plate 42 mesh to drive the press table 4 to move down, by driving the functional table 2 to slide on the top of the welding table 1 to move down, at this time the functional table 2 slides relative to the lower drive plate 65 to accelerate the engagement of the first auxiliary gear 67 and the first meshing tooth opening 66, thereby causing the press table 4 to move down quickly, and the functional table 2 moves down in the vertical direction to drive the assembled main side frame 7 to move down. Close to the laser welding gun head 8, at this time, the four laser welding gun heads 8 are respectively along the through groove 22 on the functional table 2 to be located on one side of the corner formed by the inclined surface 72 on each two main side frames 7, and in the process of the functional table 2 moving downward, the four laser welding gun heads 8 are opened to synchronously and multi-stationarily weld the four corners formed by the splicing of the main side frames 7, thereby connecting and fixing the multiple main side frames 7, and then in the downward movement of the press table 4, when the laser welding gun head 8 approaches the top of the corner, the press table 4 moves downward to fit the multiple main side frames 7 on the functional table 2. Then, when the functional platform 2 continues to move downward, the four laser welding gun heads 8 weld the gaps at the connection between the corners of the main side frame 7 and the main cover plate 71 in a synchronous and multi-station manner. Since the pressing platform 4 has been attached to the main side frame 7, when the functional platform 2 continues to move downward and the hydraulic push rod 5 continues to push, the first auxiliary gear 67 can no longer drive the pressing platform 4 to move downward and stops rotating. The continued pushing of the hydraulic push rod 5 will compress the extrusion spring 64, so that the extrusion spring 64 accumulates force.

[0080] As an optimal embodiment further provided by the present invention, the functional table 2 and the push plate 61 maintain relative movement, and when the main cover plate 71 is attached to the main side frame 7, the functional table 2 keeps moving downward, and the extrusion spring 64 arranged between the lower drive plate 65 and the bracket 6 is squeezed and stores force.

[0081] Specifically, such as Figure 9 As shown, the outer wall of one side of the push plate 61 is provided with a second meshing tooth opening 62, and a direction-changing gear 26 is symmetrically rotated inside the welding table 1. The auxiliary tooth plates 23 symmetrically fixedly installed at the bottom of the functional table 2 are respectively slidably set on the top of the welding table 1, and the bottoms of the auxiliary tooth plates 23 are respectively fixedly installed with return springs 25, and the first ends of the return springs 25 are respectively fixedly installed on the welding table 1, and the direction-changing gears 26 are respectively engaged with the auxiliary tooth plates 23 and the second meshing tooth opening 62.

[0082] Further, the two main side frames 7 are placed on the two adjacent sides of the two protrusions 21 on the top of the function table 2, and then the two main side frames 7 are placed on the two adjacent sides of the two sliding tables 3, and the main cover plate 71 is placed in the receiving groove 43. At this time, the negative pressure cavity 47 is formed by using the vacuum machine negative pressure pump to form negative pressure, and the main cover plate 71 on one side of the suction cup 44 is sucked along the through hole 45 through the negative pressure cavity 47 and the plurality of guide holes 46, so that the main cover plate 71 is adsorbed on the plurality of suction cups 44 and is attached to the pressing table 4. Then the hydraulic push rod 5 pushes the horizontal frame 51 to move up to cooperate with the pulling spring 68 to drive the bracket 6 to move up, at this time the top of the two push plates 61 on the bracket 6 respectively slides on the inclined surface 31, so that the two sliding tables 3 are synchronously relatively slid to close, and the two sliding tables 3 respectively push the main side frame 7 on one side of the two main side frames 7 to make the two main side frames 7 close to the main side frame 7 on one side of the two protrusions 21, and because the bracket 6 moves up to drive the lower driving plate 65 to move up, at this time the first meshing tooth port 66 and the first auxiliary gear 67 are engaged to drive the first auxiliary gear 67 to rotate, and then the first auxiliary gear 67 and the main tooth plate 42 are engaged to drive the pressing table 4 to move down.

[0083] Further, when the push plate 61 passes the inclined surface 31, at this time as shown in Figure 9 , the second meshing tooth port 62 on the push plate 61 starts to engage with the reversing gear 26 to make the reversing gear 26 rotate, and the reversing gear 26 rotates and engages with the auxiliary tooth plate 23, at this time the auxiliary tooth plate 23 moves down to compress the return spring 25 while driving the function table 2 to move down, because the function table 2 moves down in the vertical direction to drive the spliced main side frame 7 to move down to close to the laser welding gun head 8, as shown in Figure 5 , at this time the four laser welding gun heads 8 are respectively located on the side of the corner formed by the inclined surface part 72 of each two main side frames 7 along the through slot 22 on the function table 2, and in the process of moving down the function table 2, the four laser welding gun heads 8 are opened to synchronously and multi-station weld the four corners formed by the spliced main side frame 7, so that the plurality of main side frames 7 are connected and fixed, at this time the first meshing tooth port 66 continues to engage with the first auxiliary gear 67 to make the pressing table 4 continue to move down, when the laser welding gun head 8 approaches the corner top, at this time the pressing table 4 moves down to attach to the plurality of main side frames 7 on the function table 2.

[0084] Furthermore, under the continued pushing of the hydraulic push rod 5, the second meshing toothing 62 continues to mesh with the change direction gear 26 to make the lower movement of the function table 2, at this time the four laser welding gun heads 8 move upward relative to the function table 2 to synchronously and multi-station weld the gaps at the connection between the corner of the main side frame 7 and the main cover plate 71, and since the pressing table 4 has been attached to the main side frame 7, when the function table 2 continues to move downward and the hydraulic push rod 5 continues to push, at this time the first auxiliary gear 67 cannot drive the pressing table 4 to move downward and stops rotating, then the continued pushing of the hydraulic push rod 5 will compress the compression spring 64 to make the compression spring 64 store energy. When the laser welding gun head 8 reaches the top end of the corner of the main side frame 7, the bracket 6 is attached to the welding table 1, and the function table 2 stops moving downward.

[0085] Then under the continued pushing of the hydraulic push rod 5, the two drive racks 52 on the cross frame 51 are driven to continuously move upward to approach the indirect gear 94, the tension spring 68 is tensioned to store energy to make the bracket 6 remain attached to the welding table 1. As shown in Figure 3 The two parallel lead screws 9 are respectively fixedly installed with small gears 91, during the time when the drive racks 52 continuously move upward to approach the indirect gear 94, the four laser welding gun heads 8 can respectively continuously weld the gaps at the connection between the four corners of the main side frame 7 and the main cover plate 71 to enhance the welding strength of the corners, then the main tooth surface 53 on the drive rack 52 meshes with the indirectly arranged indirect gear 94 in the welding table 1 during the upward movement of the two drive racks 52, the acceleration gear disc 93 on the shaft of the indirect gear 94 meshes with the two small gears 91 respectively to make the two lead screws 9 rotate, as shown in Figure 13 and Figure 6 The lead screw 9 is four. Then the end wedge gears 92 between every two adjacent lead screws 9 mesh with each other to make the multiple lead screws 9 rotate synchronously, at this time the multiple nut blocks 95 are respectively threadedly rotated on the corresponding lead screws 9 and slide in the working cavity 11, the push block 96 is pushed by the pushing spring 98 to make the push block 96 located on the arc surface of the arc plate 88.

[0086] Further, when the nut block 95 drives the laser welding gun head 8 to move, at this time as shown in Figure 10 The force gear 87 rotatingly arranged on the push block 96 meshes with the inner toothing 89, the force gear 87 meshes with the large gear 86, and the pinion 85 meshes with the drive gear 83, then the laser welding gun head 8 fixedly installed on the rotating disc 81 at the top end of the second auxiliary shaft 82 slightly swings, and the laser welding gun head 8 is driven by the nut block 95 to move to weld the side seam between the main side frame 7 and the main cover plate 71.

[0087] Since the middle of the main tooth surface 53 of the driving rack 52 is provided with a notch 54, when the driving rack 52 is driven to move, when the notch 54 in the middle of the driving rack 52 is located on one side of the indirect gear 94, as shown in FIG. Figure 11 The indirect gear 94 is no longer engaged with the main tooth surface 53 and stops rotating, and the corresponding screw rod 9 stops rotating, thereby causing the laser welding gun head 8 located on the support block 96 to stop moving and stop swinging, as shown in FIG. Figure 7 As shown, at this time, the laser welding gun head 8 is located in the middle of the side seam between the main side frame 7 and the main cover plate 71, and continues to weld the middle side seam, thereby enhancing the welding strength of the middle area of ​​the side seam between the main side frame 7 and the main cover plate 71, so that the main cover plate 71 is more stably located on the main side frame 7. Then, with the continued movement of the drive rack 52, the indirect gear 94 is again engaged with the main tooth surface 53. At this time, the indirect gear 94 rotates again, and the screw rod 9 is driven to rotate again by the acceleration gear plate 93. The laser welding gun head 8 on the screw rod 9 moves again to continue welding the subsequent side seams. When the welding between the main side frames 7 and the main side frames 7 and between the main side frames 7 and the main cover plate 71 is completed, the welding of the laser welding gun head 8 is stopped.

[0088] By driving the hydraulic push rod 5 to reset, the driving rack 52 is engaged with the indirect gear 94 again to rotate the screw 9, and the force gear 87 is engaged with the inner tooth mouth 89 again to make the laser welding gun head 8 swing back. When the bracket 6 moves down to drive the lower drive plate 65 to move down, the first meshing tooth mouth 66 and the first auxiliary gear 67 are engaged again to drive the first auxiliary gear 67 to reset and rotate, and then the first auxiliary gear 67 and the main tooth plate 42 are engaged again to drive the press table 4 to move up. Since the main cover plate 71 is adsorbed on the suction cup 44, the frame combination of the main cover plate 71 and the main side frame 7 that has been welded can be driven to move up during the upward movement of the press table 4, so that the worker can take the frame combination out of the welding table 1.

[0089] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A multi-station frame assembly welding apparatus comprising a plurality of main frame assemblies and a main cover plate movably disposed thereon, characterized in that, The welding table is internally provided with a welding mechanism, and the welding mechanism comprises: A plurality of arc-shaped plates, which are respectively and movably provided with corresponding laser welding gun heads on arc-shaped sides of the arc-shaped plates, and the plurality of laser welding gun heads comprise two working positions: The first working position, in which the plurality of laser welding gun heads are movably arranged between corresponding corner frames in a vertical direction; The second working position, in which the plurality of laser welding gun heads move along the arc-shaped sides of the corresponding arc-shaped plates and rotate, so that the laser welding gun heads keep a predetermined interval from welding seams between the corresponding corner frames and the main cover plate; A plurality of screws are rotatably arranged in a working cavity on the top of the welding table and are synchronous with the laser welding gun heads, the screws are provided with supporting blocks, and the screws are rotated to drive the supporting blocks to move along the arc surfaces of the arc-shaped plates; The inner tooth opening arranged on the arc-shaped side of the arc-shaped plate is engaged with the stress gear rotatably arranged on the supporting block, and the supporting block moves along the arc surface of the arc-shaped plate to drive the stress gear and the laser welding gun head to rotate; An indirect gear is rotatably arranged in the welding table, one of the screws is fixedly installed with a small gear matched with the indirect gear, and a driving rack is slidably arranged in the welding table and engaged with the indirect gear; A notch is arranged in the middle of the main tooth surface of the driving rack, and the driving rack is moved to drive the indirect gear to rotate intermittently; The limiting mechanism comprises a functional table slidably arranged on the top of the welding table, and slide tables are symmetrically slidably arranged between the bosses symmetrically arranged on the top of the functional table, and the two slide tables are relatively slid to push the plurality of corner frames together; The two push plates are relatively slid to push the slide tables together. A second engagement tooth opening is arranged on the outer wall of one side of the push plate, a direction-changing gear is symmetrically rotatably arranged in the welding table, auxiliary tooth plates are symmetrically fixedly installed on the bottom of the functional table and slidably arranged on the top of the welding table, the bottom of each auxiliary tooth plate is fixedly installed with a reset spring, the first end of each reset spring is fixedly installed on the welding table, and the direction-changing gear is engaged with the auxiliary tooth plate and the second engagement tooth opening; When the driving rack is driven to reset and move along the original path again, the main tooth surface of the driving rack is engaged with the indirect gear again, and the laser welding gun head is reset and swung, so that the laser welding gun head can be used to perform secondary reinforcing welding on the edge seam between the corner frame and the main cover plate again.

2. The multi-station bezel assembly welding apparatus of claim 1, wherein, The limiting mechanism further comprises a pressing table movably arranged on the top of the functional table in a vertical direction, and the main cover plate is movably arranged on the bottom of the pressing table to be synchronously lowered and attached to the corner frame, and the pressing table is provided with a negative pressure adsorption unit for adsorbing the main cover plate.

3. The multi-station bezel assembly welding apparatus of claim 1, wherein, The lower driving plate and the pressing table are relatively moved, the lower driving plate and the driving rack are in transmission, the functional table and the push plate are relatively moved, the functional table is lowered when the main cover plate is attached to the corner frame, and the pressing spring arranged between the lower driving plate and the bracket is extruded and stored.

4. The multi-station bezel assembly welding apparatus of claim 3, wherein, ​

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