Automatic welding equipment for office chair leg supporting inner framework

Abstract

The utility model discloses an office chair leg supporting inner skeleton automatic welding device which comprises a rack, a rotating device is arranged on the rack, and a welding workbench which can bear an office chair leg body and can be driven by the rotating device to rotate is arranged on the rotating device. A first positioning device and a second positioning device are arranged on the rack, wherein the first positioning device is used for pushing the supporting inner bone to enable the supporting inner bone to abut against a central pipe of the office chair leg main body when the supporting inner bone is placed on the office chair leg main body, and the second positioning device can axially press the supporting inner bone on the office chair leg main body; the first welding device is used for welding the joints of the two sides of the supporting inner framework and the office chair leg main body; and the second welding device is used for welding the joints of the ends of the supporting inner framework and the central pipe. Automatic welding of the supporting inner bone, the office chair leg body and the central pipe is achieved, welding is efficient and stable, time and labor are saved, labor cost is saved, production cost can be reduced, product quality can be guaranteed, and industrial injury risks can be reduced to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to an office chair foot support inner bone automatic welding equipment.

BACKGROUND TECHNIQUE

[0002] The office chair foot on the market is generally produced according to the forming process disclosed in the Chinese invention patent with the application number 202410663408.0, comprising a chair foot body formed by metal template stamping, the chair foot body comprising a fixed part at the center, a plurality of support parts extending to the periphery of the fixed part and a mounting part at the extension end of the support part, a shaft sleeve in the form of a pipe is welded at the center of the fixed part, a roller seat is welded in the mounting part, a support inner bone is welded at the support part to improve the structural strength, and the two ends of the support inner bone are fixedly connected with the shaft sleeve and the roller seat by welding. At present, the support inner bone fixed at the center of the chair foot body is generally welded manually by artificial, which not only is time-consuming and laborious, but also consumes high labor cost, and the overall efficiency is not high, the staff is also susceptible to strong light and dust to cause occupational diseases, and the welding quality is unstable, and manual welding is prone to unstable factors such as product appearance defect, virtual welding, delamination and missing welding.

[0003] Therefore, the utility model is just based on the above deficiencies.

TECHNICAL CONTENT

[0004] The utility model aims at overcoming the defects of prior art, and provides an office chair foot support inner bone automatic welding equipment which saves manpower and improves welding efficiency and quality.

[0005] The utility model is realized through the following technical schemes:

[0006] An office chair foot support inner bone automatic welding equipment is characterized by comprising a rack 1, a rotating device 2 is arranged on the rack 1, a welding workbench 3 capable of bearing an office chair foot body 20 and being driven to rotate by the rotating device 2 is arranged on the rotating device 2, a first positioning device 4 for pushing a support inner bone 30 to make the support inner bone 30 abut against a center pipe 40 of the office chair foot body 20 when the support inner bone 30 is placed on the office chair foot body 20, a second positioning device 5 for axially pressing the support inner bone 30 on the office chair foot body 20, a first welding device 6 for welding the office chair foot body 20 at the joint of the two sides of the support inner bone 30 and the office chair foot body 20 and a second welding device 7 for welding the center pipe 40 at the joint of the end of the support inner bone 30 and the center pipe 40 are arranged on the rack 1.

[0007] The office chair foot support inner bone automatic welding equipment as described above, characterized in that: the first positioning device 4 comprises a first mounting frame 41 arranged on the rack 1, a first air cylinder 42 arranged on the first mounting frame 41, a second air cylinder 43 arranged on the first air cylinder 42 and capable of being driven by the first air cylinder 42 to move towards the welding workbench 3, and a third air cylinder 44 arranged on the second air cylinder 43 and capable of moving above the support inner bone 30 when the second air cylinder 43 moves, wherein the third air cylinder 44 is provided with an air cylinder rod 441 extending to one end side of the support inner bone 30 when the third air cylinder 44 moves above the support inner bone 30, and the second air cylinder 43 pushes the third air cylinder 44 to make the air cylinder rod 441 push the support inner bone 30 to make the other end of the support inner bone 30 abut against the center tube 40 when the air cylinder rod 441 extends to one end side of the support inner bone 30.

[0008] The office chair foot support inner bone automatic welding equipment as described above, characterized in that: the rack 1 is provided with a second mounting frame 11 located on one side of the welding workbench 3.

[0009] The office chair foot support inner bone automatic welding equipment as described above, characterized in that: the second positioning device 5 comprises a pressing air cylinder 51 arranged vertically on the second mounting frame 11, a rotating support 52 rotatably arranged on the piston rod of the pressing air cylinder 51 and driven by the pressing air cylinder 51 to move towards or away from the welding workbench 3, and a plurality of positioning blocks 53 arranged at the lower end of the rotating support 52 and abutting against each support inner bone 30 after the rotating support 52 moves towards the welding workbench 3.

[0010] The office chair foot support inner bone automatic welding equipment as described above, characterized in that: the welding workbench 3 is provided with a positioning sleeve 31, and the rotating support 52 is provided with a follower column 521 inserted into the positioning sleeve 31 to enable the rotating support 52 to rotate with the welding workbench 3.

[0011] The office chair foot support inner bone automatic welding equipment as described above, characterized in that: the rotating support 52 is provided with a positioning hole 522, the piston rod of the pressing air cylinder 51 is fixedly installed with a follower support 8, and the follower support 8 is provided with a brake elastic pin 9 inserted into the positioning hole 522 to position the rotating support 52 after the rotating support 52 rotates.

[0012] The office chair foot support inner bone automatic welding equipment as described above, characterized in that: the follower support 8 is provided with a vertically arranged guide column 81, the second mounting frame 11 is provided with an air cylinder support 12 for installing the pressing air cylinder 51, and the air cylinder support 12 is provided with a guide shaft sleeve 121 sleeved on the guide column 81.

[0013] The office chair foot support inner bone automatic welding equipment has the characteristics that the positioning blocks 53 are provided with the clamping holes 531 clamped on the support inner bones 30, and each group of the positioning blocks 53 is provided with two clamping holes 531 clamped on the two ends of the support inner bones 30.

[0014] The office chair foot support inner bone automatic welding equipment has the characteristics that the first welding device 6 comprises the first guide rail seat 61 provided on the second mounting frame 11, the first vertical guide rail 62 vertically provided on the first guide rail seat 61, the first sliding table 63 slidably provided on the first vertical guide rail 62, the first screw nut sliding block 64 fixed on the first sliding table 63, the first screw rod 65 provided in parallel with the first vertical guide rail 62 and penetrating through the first screw nut sliding block 64, the first motor 66 driving the first screw rod 65 to rotate and moving the first screw nut sliding block 64 along the first screw rod 65 to drive the first sliding table 63 to move up and down, the first welding gun 67 mounted on the first sliding table 63, the second welding device 7 comprises the second guide rail seat 71 provided on the second mounting frame 11, the second vertical guide rail 72 vertically provided on the second guide rail seat 71, the second sliding table 73 slidably provided on the second vertical guide rail 72, the second screw nut sliding block 74 fixed on the second sliding table 73, the second screw rod 75 provided in parallel with the second vertical guide rail 72 and penetrating through the second screw nut sliding block 74, the second motor 76 driving the first screw rod 65 to rotate and moving the second screw nut sliding block 74 along the second screw rod 75 to drive the second sliding table 73 to move up and down, and the second welding gun 77 mounted on the second sliding table 73.

[0015] The office chair foot support inner bone automatic welding equipment has the characteristics that the first sliding table 63 is provided with the welding gun support 68, the first welding gun 67 is provided with two welding guns and is arranged in parallel on the welding gun support 68, and the rotating device 2 is the cam divider.

[0016] Compared with the prior art, the office chair foot support inner bone automatic welding equipment has the following advantages:

[0017] 1、When the support inner bone needs to be welded, the office chair foot body is placed on the welding workbench and a plurality of support inner bones are placed on the office chair foot body, then the first positioning device pushes one end of the support inner bone to make the other end of the support inner bone abut against the center pipe located in the middle of the office chair foot body, at the same time the second positioning device axially compresses the support inner bone on the office chair foot body, then the first welding device welds the joint between the two sides of the support inner bone and the office chair foot body, and the second welding device welds the joint between the end of the support inner bone and the center pipe, when one support inner bone is welded, the rotating device drives the welding workbench to rotate to make one support inner bone to be welded move to the welding station, and then the positioning and welding steps are repeated, so that the automatic welding of the support inner bone, the office chair foot body and the center pipe is realized, the welding is efficient and stable, time and labor are saved, labor cost is saved, production cost is reduced and product quality is guaranteed, automatic production avoids the radiation and harm of welding strong light and smoke to employees, and the risk of industrial injury is minimized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the perspective view of the utility model;

[0019] Figure 2 is the structural schematic view of the first positioning device of the utility model;

[0020] Figure 3 is the structural schematic view of the second positioning device, the first welding device and the second welding device installed on the second mounting frame;

[0021] Figure 4 is the structural schematic view of the utility model when the first positioning device and the second positioning device position the support inner bone;

[0022] Figure 5 is the structural schematic view of the utility model when welding.

DETAILED DESCRIPTION

[0023] The utility model will be further described in connection with the drawings:

[0024] As Figures 1 to 5As shown, an office chair foot support inner bone automatic welding device comprises a rack 1, a rotating device 2 arranged on the rack 1, a welding workbench 3 capable of bearing an office chair foot body 20 and being driven to rotate by the rotating device 2, a first positioning device 4 arranged on the rack 1 and capable of pushing a support inner bone 30 to abut against a center tube 40 of the office chair foot body 20 when the support inner bone 30 is placed on the office chair foot body 20, a second positioning device 5 capable of axially pressing the support inner bone 30 against the office chair foot body 20, a first welding device 6 for welding the office chair foot body 20 at both sides of the support inner bone 30, and a second welding device 7 for welding the support inner bone 30 at an end portion thereof. Specifically, the rotating device 2 is a cam divider; the welding workbench 3 has a groove for positioning the office chair foot body 20, when the support inner bone 30 needs to be welded, the office chair foot body 20 is placed on the welding workbench, and a plurality of support inner bones are placed on the office chair foot body by means of automatic material dividing bin, mechanical hand or manual placement, etc.; as shown, Figure 4 as shown, then the first positioning device 4 pushes one end of the support inner bone 30 to make the other end of the support inner bone 30 abut against the center tube 40 located in the middle of the office chair foot body 20, while the second positioning device 5 axially presses the support inner bone 30 against the office chair foot body 20; as shown, Figure 5 as shown, then the first welding device 6 welds the office chair foot body 20 at both sides of the support inner bone 30, and the second welding device 7 welds the support inner bone 30 at an end portion thereof, when one support inner bone 30 is welded, the rotating device 2 drives the welding workbench 3 to rotate to move one support inner bone 30 to be welded to a welding station, and the foregoing positioning and welding steps are repeated to realize automatic welding of the support inner bone, the office chair foot body and the center tube, which is efficient and stable, saves time and labor, saves labor cost, is conducive to reducing production cost and ensuring product quality, and avoids radiation and harm of welding strong light and smoke dust to employees in automatic production, which can minimize the risk of injury.

[0025] as shown, Figure 2As shown, the first positioning device 4 comprises a first mounting frame 41 arranged on the rack 1, a first cylinder 42 arranged on the first mounting frame 41, a second cylinder 43 arranged on the first cylinder 42 and capable of being driven by the first cylinder 42 to move towards the welding workbench 3, a third cylinder 44 arranged on the second cylinder 43 and capable of moving above the support inner bone 30 with the movement of the second cylinder 43, and a cylinder rod 441 arranged on the third cylinder 44 and extending to one end side of the support inner bone 30 when the third cylinder 44 moves above the support inner bone 30. When the cylinder rod 441 extends to the one end side of the support inner bone 30, the second cylinder 43 pushes the third cylinder 44 to make the cylinder rod 441 push the support inner bone 30 to make the other end of the support inner bone 30 abut against the center pipe 40. Specifically, the first cylinder 42 and the second cylinder 43 are slide table cylinders, and the third cylinder 44 is a push rod cylinder. The cylinder seat of the first cylinder 42 is mounted on the first mounting frame 41, the cylinder seat of the second cylinder 43 is mounted on the slide table of the first cylinder 42, and the third cylinder 44 is mounted on the slide table of the second cylinder 43. When positioning, the first cylinder 42 first drives the second cylinder 43 and the third cylinder 44 to approach the support inner bone 30, then the cylinder rod 441 of the third cylinder 44 extends to the one end side of the support inner bone 30, and finally the second cylinder 43 drives the third cylinder 44 to move towards the support inner bone 30 to make the cylinder rod 441 abut against the one end of the support inner bone 30, so that the other end of the support inner bone 30 abuts against the center pipe 40 and tightly abuts against the center pipe 40, so as to ensure the welding quality.

[0026] In the utility model, the rack 1 is provided with a second mounting frame 11 located at one side of the welding workbench 3.

[0027] As shown in the drawings, Figure 3 As shown, the second positioning device 5 comprises a pressing cylinder 51 vertically arranged on the second mounting frame 11, a rotating support 52 rotatably arranged on the piston rod of the pressing cylinder 51 and driven by the pressing cylinder 51 to move towards the welding workbench 3 or away from the welding workbench 3, and a plurality of positioning blocks 53 arranged at the lower end of the rotating support 52 and abutting against the support inner bones 30 after the rotating support 52 moves towards the welding workbench 3. After the support inner bones 30 are placed on the office chair leg main body 20, the pressing cylinder 51 drives the positioning blocks 53 to move downwards to press and position the support inner bones 30 on the office chair leg main body 20, so as to facilitate the smooth progress of subsequent welding work, and the positioning blocks 53 are reset after welding is completed. Specifically, the positioning blocks 53 are provided with a bayonet 531 for positioning on the support inner bones 30, and the positioning blocks 53 are circumferentially and uniformly distributed at the bottom of the rotating support 52, and each group of positioning blocks 53 is provided with two positioning blocks 531 and is respectively arranged at the two ends of the corresponding support inner bones 30.

[0028] Further, the welding workbench 3 is provided with a positioning sleeve 31, and the rotating support 52 is provided with a follower column 521 which is inserted into the positioning sleeve 31 so that the rotating support 52 can rotate with the welding workbench 3. Through the cooperation of the follower column 521 and the positioning sleeve 31, when the welding workbench 3 is driven to rotate by the rotating device 2, the rotating support 52 can be driven to rotate together, so that the rotating force is not all applied to the positioning block 53, and the service life of the positioning block 53 is improved.

[0029] Further, the rotating support 52 is provided with a positioning hole 522, the piston rod of the pressing cylinder 51 is fixedly installed with a follower support 8, and the follower support 8 is provided with a brake elastic pin 9 which is clamped into the positioning hole 522 for positioning when the rotating support 52 rotates.

[0030] Specifically, the follower support 8 is provided with a vertically arranged guide column 81, the second mounting frame 11 is provided with a cylinder support 12 for mounting the pressing cylinder 51, and the cylinder support 12 is provided with a guide shaft sleeve 121 which is sleeved on the guide column 81. Through the cooperation of the guide column 81 and the guide shaft sleeve 121, when the rotating support 52 and the components thereon move up and down relative to the second mounting frame 11, the rotating support 52 and the components thereon can run stably.

[0031] As shown in FIG. 1, the rotating device 2 is provided with a rotating base 21, and the rotating base 21 is provided with a rotating shaft 22 which is rotatably installed on the rotating base 21. Figure 3As shown, the first welding device 6 comprises a first guide rail seat 61 arranged on the second mounting frame 11, a first vertical guide rail 62 vertically arranged on the first guide rail seat 61, a first sliding table 63 slidably arranged on the first vertical guide rail 62, a first screw nut sliding block 64 fixed on the first sliding table 63, a first screw rod 65 arranged in parallel with the first vertical guide rail 62 and passing through the first screw nut sliding block 64, a first motor 66 driving the first screw rod 65 to rotate so as to drive the first screw nut sliding block 64 to move along the first screw rod 65 and drive the first sliding table 63 to move up and down, a first welding gun 67 arranged on the first sliding table 63, the second welding device 7 comprises a second guide rail seat 71 arranged on the second mounting frame 11, a second vertical guide rail 72 vertically arranged on the second guide rail seat 71, a second sliding table 73 slidably arranged on the second vertical guide rail 72, a second screw nut sliding block 74 fixed on the second sliding table 73, a second screw rod 75 arranged in parallel with the second vertical guide rail 72 and passing through the second screw nut sliding block 74, a second motor 76 driving the first screw rod 65 to rotate so as to drive the second screw nut sliding block 74 to move along the second screw rod 75 and drive the second sliding table 73 to move up and down, and a second welding gun 77 arranged on the second sliding table 73. Through the above structure, the first welding gun 67 and the second welding gun 77 can move up and down, which facilitates the welding in the working position and the resetting after moving up. Specifically, five avoiding holes 523 are evenly arranged on the rotating support 52 in the circumferential direction, when the second welding gun 77 is driven to move down for welding, the end of the second welding gun 77 passes through the avoiding hole 523 to the position where the support inner bone end and the central pipe meet, when the welding of one support inner bone is completed, the second welding gun 77 is driven to move up for resetting, then the rotating device drives the welding workbench to rotate so as to drive the next support inner bone to be welded to move to the welding position, after the support inner bone is positioned, the first welding gun 67 and the second welding gun 77 are used for welding respectively. The second mounting frame 11 is further provided with a welding wire feeder 10 for feeding welding wires to the first welding gun 67 and the second welding gun 77 respectively.

[0032] Specifically, the first sliding table 63 is provided with a welding gun support 68, and the first welding gun 67 is provided with two welding guns arranged in parallel on the welding gun support 68, which can simultaneously weld the positions where the two sides of the support inner bone meet the office chair leg body.

Claims

1. An office chair foot support inner leg automatic welding device, characterized in that: The utility model provides a welding device for office chair foot, which comprises a frame (1), a rotating device (2) is arranged on the frame (1), a welding workbench (3) capable of bearing office chair foot body (20) and being driven to rotate by the rotating device (2) is arranged on the rotating device (2), a first positioning device (4) for pushing a support inner bone (30) to abut against a central pipe (40) of the office chair foot body (20) when the support inner bone (30) is placed on the office chair foot body (20) is arranged on the frame (1), a second positioning device (5) for axially pressing the support inner bone (30) on the office chair foot body (20), a first welding device (6) for welding the support inner bone (30) on both sides of the office chair foot body (20) and a second welding device (7) for welding the support inner bone (30) on the end of the central pipe (40) are arranged on the frame (1).

2. The office chair foot support inner leg automatic welding apparatus of claim 1, wherein: The first positioning device (4) comprises a first mounting frame (41) arranged on the frame (1), a first cylinder (42) arranged on the first mounting frame (41), a second cylinder (43) arranged on the first cylinder (42) and capable of being driven to move towards the welding workbench (3) by the first cylinder (42) and a third cylinder (44) arranged on the second cylinder (43) and capable of moving above the support inner bone (30) when the second cylinder (43) moves, wherein one end of the third cylinder (44) is provided with a cylinder rod (441) extending to one end side of the support inner bone (30) when the third cylinder (44) moves above the support inner bone (30), and the second cylinder (43) pushes the third cylinder (44) to make the cylinder rod (441) push the support inner bone (30) to make the other end of the support inner bone (30) abut against the central pipe (40) when the cylinder rod (441) extends to one end side of the support inner bone (30).

3. The office chair foot support inner leg bone automatic welding apparatus of claim 1, wherein: The frame (1) is provided with a second mounting frame (11) on one side of the welding workbench (3).

4. The office chair foot support inner leg automatic welding apparatus of claim 3, wherein: The second positioning device (5) comprises a pressing cylinder (51) arranged vertically on the second mounting frame (11), a rotating support (52) arranged on the piston rod of the pressing cylinder (51) and capable of being driven to move towards or away from the welding workbench (3) by the pressing cylinder (51) and a plurality of positioning blocks (53) arranged on the lower end of the rotating support (52) and capable of abutting against each support inner bone (30) when the rotating support (52) moves towards the welding workbench (3).

5. The office chair foot support inner leg automatic welding apparatus of claim 4, wherein: The welding workbench (3) is provided with a positioning sleeve (31), and the rotating support (52) is provided with a follower column (521) inserted into the positioning sleeve (31) to enable the rotating support (52) to rotate with the welding workbench (3).

6. The office chair foot support inner leg automatic welding apparatus of claim 4, wherein: The rotating support (52) is provided with a positioning hole (522), the piston rod of the pressing cylinder (51) is fixedly provided with a follower support (8), and the follower support (8) is provided with a brake elastic pin (9) capable of being clamped into the positioning hole (522) to position the rotating support (52) when the rotating support (52) rotates.

7. The office chair foot support inner leg automatic welding apparatus of claim 6, wherein: The follow-up support (8) is provided with a vertical guide column (81), the second mounting frame (11) is provided with a cylinder support (12) for mounting a pressing cylinder (51), and the cylinder support (12) is provided with a guide shaft sleeve (121) sleeved on the guide column (81).

8. The office chair foot support inner leg bone automatic welding apparatus of claim 4, wherein: The positioning block (53) is provided with a clamping hole (531) clamped on the support inner bone (30), and each group of positioning blocks (53) is provided with two and is clamped on both ends of the support inner bone (30).

9. The office chair foot support inner leg bone automatic welding apparatus of claim 3, wherein: The first welding device (6) comprises a first guide rail seat (61) arranged on the second mounting frame (11), a first vertical guide rail (62) vertically arranged on the first guide rail seat (61), a first sliding table (63) slidably arranged on the first vertical guide rail (62), a first screw nut sliding block (64) fixed on the first sliding table (63), a first screw rod (65) arranged in parallel with the first vertical guide rail (62) and sleeved on the first screw nut sliding block (64), a first motor (66) driving the first screw rod (65) to rotate to move the first screw nut sliding block (64) along the first screw rod (65) and drive the first sliding table (63) to move up and down, a first welding gun (67) arranged on the first sliding table (63), the second welding device (7) comprises a second guide rail seat (71) arranged on the second mounting frame (11), a second vertical guide rail (72) vertically arranged on the second guide rail seat (71), a second sliding table (73) slidably arranged on the second vertical guide rail (72), a second screw nut sliding block (74) fixed on the second sliding table (73), a second screw rod (75) arranged in parallel with the second vertical guide rail (72) and sleeved on the second screw nut sliding block (74), a second motor (76) driving the first screw rod (65) to rotate to move the second screw nut sliding block (74) along the second screw rod (75) and drive the second sliding table (73) to move up and down, and a second welding gun (77) arranged on the second sliding table (73).

10. The office chair foot support inner leg automatic welding apparatus of claim 9, wherein: The first sliding table (63) is provided with a welding gun support (68), the first welding gun (67) is provided with two and is arranged in parallel on the welding gun support (68), and the rotating device (2) is a cam divider.

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