Automatic production line for office chair legs

Abstract

The utility model discloses an automatic production line for office chair legs. Comprising a first feeding spot welding station, a first reinforcing welding station and a second feeding spot welding station, wherein the first feeding spot welding station is used for spot welding a central pipe on an office chair leg main body; the first reinforcing welding station is used for reinforcing and welding the central pipe; the second feeding spot welding station is used for spot welding a plurality of supporting inner ribs on the office chair leg main body; the second reinforcing welding stations are used for conducting reinforcing welding on different supporting inner ribs respectively, the burr pressing station is used for extruding flashes and burrs of the office chair leg body to be bent inwards, and the third feeding spot welding station is used for conducting spot welding on a plurality of roller seats on the office chair leg body. The third reinforcing welding stations are used for reinforcing and welding different roller seats respectively, the overturning station is used for overturning the office chair leg main body after the roller seats are welded, the reaming station is used for reaming a central pipe on the office chair leg main body, and the unloading station is used for outputting finished office chair legs after reaming. And the adjacent stations are conveyed through a transfer device.

Description

TECHNICAL FIELD

[0001] The utility model relates to an office chair leg automation production line. BACKGROUND

[0002] Office chair legs on the market are generally produced according to the forming process disclosed in Chinese patent application No. 202410663408.0, including a chair leg body stamped and formed by a metal template, the chair leg body including a fixed part at the center, a plurality of support parts extending around the fixed part, and a mounting part at the end of the support part extension, a shaft sleeve in the form of a tube 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, and the two ends of the support inner bone are fixedly connected with the shaft sleeve and the roller seat by welding. In the production process of office chair legs, manual processing is used in multiple processes, which consumes a lot of manpower, takes time and effort, and incurs high labor costs. Moreover, the heavy and monotonous work can easily affect the work efficiency of the operators, thereby affecting the production efficiency.

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

[0004] The utility model aims at overcoming the deficiencies of the prior art and providing an office chair leg automation production line that saves labor and effectively improves production efficiency.

[0005] The utility model is implemented through the following technical solutions:

[0006] An office chair leg automation production line is characterized by comprising a first feeding spot welding station for spot welding a center tube on an office chair leg body, a first reinforcing welding station is arranged on one side of the first feeding spot welding station for reinforcing welding at the joint between the center tube and the office chair leg body, a second feeding spot welding station is arranged on one side of the first reinforcing welding station for spot welding a plurality of support inner bones on the office chair leg body, a plurality of second reinforcing welding stations are arranged on one side of the second feeding spot welding station for reinforcing welding on different support inner bones, a burr pressing station is arranged on one side of the second reinforcing welding station away from the second feeding spot welding station for pressing the flash of the office chair leg body inward, a third feeding spot welding station is arranged on one side of the burr pressing station for spot welding a plurality of roller seats on the office chair leg body, a plurality of third reinforcing welding stations are arranged on one side of the third feeding spot welding station for reinforcing welding on different roller seats, a turnover station is arranged on one side of the third reinforcing welding station away from the third feeding spot welding station for overturning the office chair leg body after welding of the roller seat, a reaming station is arranged on one side of the turnover station for reaming the center tube on the office chair leg body, a discharging station is arranged on one side of the reaming station for outputting the finished office chair leg, and adjacent stations are conveyed through a transfer device.

[0007] The office chair leg automatic production line as described above is characterized in that the first feeding and spot welding station comprises a first vibrating disc for conveying the center tube, a standby positioning device for receiving a plurality of center tubes sent out by the first vibrating disc and sequentially arranging and positioning the center tubes, a first spot welding workbench for bearing the office chair leg body, a first feeding device for placing the center tube on the office chair leg body, a first pressing positioning device for axially pressing the center tube on the office chair leg body, and a first spot welding device for spot welding the joint between the center tube and the office chair leg body.

[0008] The office chair leg automatic production line as described above is characterized in that the second feeding and spot welding station comprises a feeding workbench for bearing the office chair leg body, a support inner bone distribution bin for conveying the support inner bone, a second feeding device for placing the support inner bone on the office chair leg body, a second spot welding workbench for bearing the office chair leg body after the support inner bone is placed, a first positioning device for pushing the support inner bone to abut against the center tube of the office chair leg body, a second positioning device for axially pressing the support inner bone on the office chair leg body, a second spot welding device for spot welding the joint between the two sides of the support inner bone and the office chair leg body, and a fourth spot welding device for spot welding the joint between the end of the support inner bone and the center tube, the second reinforcing welding station comprises a second reinforcing welding workbench for bearing the office chair leg body after the support inner bone is spot welded, a third pressing positioning device for pressing the office chair leg body on the second reinforcing welding workbench, and a second reinforcing welding device for reinforcing welding the joint between the support inner bone and the office chair leg body and the center tube, and the feeding workbench, the second spot welding workbench and the second reinforcing welding workbench are all arranged on the cam divider.

[0009] The office chair leg automatic production line as described above is characterized in that the burr pressing station comprises a burr pressing workbench for bearing the office chair leg body after the support inner bone is welded, and an extrusion device for extruding the flash burr of the office chair leg body to the inside.

[0010] The office chair leg automatic production line as described above is characterized in that: the third feeding and spot welding station comprises a second vibrating disc for conveying the roller seat, a standby material positioning seat for positioning the roller seat, a third feeding device for receiving the roller seat sent by the second vibrating disc and sequentially positioning the roller seat on the standby material positioning seat, a third spot welding workbench capable of bearing the office chair leg body, a fourth feeding device for placing the roller seat on the standby material positioning seat on the office chair leg body, a fourth pressing positioning device for pressing the office chair leg body on the third spot welding workbench, and a third spot welding device for spot welding the joint between the roller seat and the office chair leg body; the third reinforcing welding station comprises a third reinforcing welding workbench for bearing the office chair leg body after the spot welding of the roller seat, a fifth pressing positioning device for pressing the office chair leg body on the third reinforcing welding workbench, and a third reinforcing welding device for reinforcing welding the joint between the roller seat and the office chair leg body; the third spot welding workbench and the third reinforcing welding workbench are arranged on the cam divider; and a flattening station for flattening the roller seat on the office chair leg body is arranged between the third feeding and spot welding station and the third reinforcing welding station.

[0011] The office chair leg automatic production line as described above is characterized in that: the flattening station comprises a flattening workbench arranged on the cam divider and capable of bearing the office chair leg body after the spot welding of the roller seat, a sixth pressing positioning device for axially pressing and fixing the office chair leg body on the flattening workbench, and a flattening cylinder arranged above the flattening workbench; and a push rod capable of being driven by the flattening cylinder to extend towards the roller seat to flatten the roller seat on the office chair leg body is arranged on the flattening cylinder.

[0012] The office chair leg automatic production line as described above is characterized in that: the turnover station comprises a lifting table capable of bearing the office chair leg body after the welding of the roller seat, a turnover device capable of grabbing the office chair leg body from the lifting table, turning over the office chair leg body, and placing the turned over office chair leg body back on the lifting table, and a first lifting device capable of driving the lifting table to move upwards to send the office chair leg body to the side of the turnover device or move downwards to reset the lifting table after the turnover device places the turned over office chair leg body back on the lifting table.

[0013] The office chair leg automatic production line as described above is characterized in that: the reaming station comprises a reaming workbench capable of bearing the turned over office chair leg body, a fifth pressing positioning device for axially pressing and fixing the office chair leg body on the reaming workbench, and a reaming device for reaming.

[0014] The office chair leg automatic production line as claimed in the above has the features that the unloading station comprises a conveying belt, a receiving workbench for receiving the office chair leg after the hole is reamed, and a second lifting device capable of driving the receiving workbench to move upwards to receive the office chair leg delivered by the transfer device or to move downwards to place the office chair leg on the conveying belt.

[0015] The office chair leg automatic production line as claimed in the above has the features that the multiple stations are linearly distributed, the transfer device comprises a carrying block arranged at each station, a vertical driving mechanism capable of driving the carrying block to move upwards to take away the office chair leg body from each station, and a horizontal driving mechanism capable of driving the carrying block to horizontally move the office chair leg body to the next station.

[0016] Compared with the prior art, the office chair leg automatic production line has the following advantages:

[0017] 1. The office chair leg automatic production line realizes automatic assembly and welding of the office chair leg, saves time and labor, saves labor cost, is conducive to reducing production cost and improving productivity, avoids unstable factors such as poor appearance, virtual welding, delamination and missed welding of the product caused by manual welding, and maximally reduces the risk of work injury, avoids radiation and harm of welding strong light and smoke to employees, and maximally reduces the risk of occupational diseases. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the office chair leg automatic production line;

[0019] Figure 2 is a structural schematic view of the first feeding spot welding station and the first reinforcing welding station;

[0020] Figure 3 is a structural schematic view of the first vibrating disc;

[0021] Figure 4 is a structural schematic view of the material waiting positioning device;

[0022] Figure 5 is a structural schematic view of the first feeding device, the first pressing positioning device and the first spot welding device;

[0023] Figure 6 is a structural schematic view of the second pressing positioning device and the first reinforcing welding device;

[0024] Figure 7 is a structural schematic view of the first spot welding workbench, the first reinforcing welding workbench and the transfer device on the rack of the office chair leg automatic production line;

[0025] Figure 8 is a structural schematic view of the second feeding spot welding station and the second reinforcing welding station.

[0026] Figure 9 is a structural schematic view of the second feeding device of the utility model;

[0027] Figure 10 is a structural schematic view of the first positioning device of the utility model;

[0028] Figure 11 is a structural schematic view of the second positioning device and the second spot welding device of the utility model;

[0029] Figure 12 is a structural schematic view of the burring station of the utility model;

[0030] Figure 13 is a structural schematic view of the extruding device of the utility model;

[0031] Figure 14 is a structural schematic view of the third feeding spot welding station and the flattening station of the utility model;

[0032] Figure 15 is a structural schematic view of the sixth pressing positioning device and the flattening cylinder of the utility model;

[0033] Figure 16 is a structural schematic view of the third feeding device of the utility model;

[0034] Figure 17 is a structural schematic view of the fourth feeding device and the fourth pressing positioning device of the utility model;

[0035] Figure 18 is a structural schematic view of the third reinforcing welding station of the utility model;

[0036] Figure 19 is a structural schematic view of the turnover station and the reaming station of the utility model;

[0037] Figure 20 is a structural schematic view of the first lifting device of the utility model;

[0038] Figure 21 is a structural schematic view of the turnover device of the utility model;

[0039] Figure 22 is a structural schematic view of the reaming device of the utility model;

[0040] Figure 23 is a structural schematic view of the unloading station of the utility model.

CONCRETE EMBODIMENT

[0041] The utility model will be further described in connection with the drawings:

[0042] As Figures 1 to 23 An office chair leg automatic production line, as shown in the figure, comprises a first feeding spot welding station 1 for spot welding a center pipe 50 on an office chair leg body 60, a first reinforcing welding station 2 is arranged on one side of the first feeding spot welding station 1 for reinforcing welding at the joint of the center pipe 50 and the office chair leg body 60, a second feeding spot welding station 3 is arranged on one side of the first reinforcing welding station 2 for spot welding a plurality of support inner bones 70 on the office chair leg body 60, a plurality of second reinforcing welding stations 4 are arranged on one side of the second feeding spot welding station 3 for reinforcing welding on different support inner bones 70 respectively, a burr pressing station 5 is arranged on one side of the second reinforcing welding station 4 away from the second feeding spot welding station 3 for bending the flash of the office chair leg body 60 inward, a third feeding spot welding station 6 is arranged on one side of the burr pressing station 5 for spot welding a plurality of roller seats 90 on the office chair leg body 60, a plurality of third reinforcing welding stations 7 are arranged on one side of the third feeding spot welding station 6 for reinforcing welding on different roller seats 90 respectively, a turnover station 8 is arranged on one side of the third reinforcing welding station 7 away from the third feeding spot welding station 6 for overturning the office chair leg body 60 after welding of the roller seat 90, a reaming station 9 is arranged on one side of the turnover station 8 for reaming the center pipe 50 on the office chair leg body 60, a discharging station 10 is arranged on one side of the reaming station 9 for outputting the finished office chair leg, and the adjacent stations are conveyed through a transfer device 20. Each station is arranged on a rack 80. The utility model realizes the automatic production of the office chair leg including center pipe welding, support inner bone welding, burr pressing, roller seat welding, turnover and reaming, saves time and effort, saves labor cost, is favorable for reducing production cost and improving productivity, avoids unstable factors such as product appearance defect, virtual welding, delamination and incomplete welding caused by manual welding, and can minimize the risk of work injury, avoid radiation and harm of welding strong light and smoke dust on employees, and minimize the risk of occupational disease.

[0043] The first feeding spot welding station 1 comprises a first vibrating disc 11 for conveying the center pipe 50, a material positioning device 12 for receiving a plurality of center pipes 50 sent out by the first vibrating disc 11 and sequentially arranging and positioning, a first spot welding workbench 13 for bearing the office chair leg body 60, a first feeding device 14 for placing the center pipe 50 on the material positioning device 12 on the office chair leg body 60, a first compression positioning device 15 for axially compressing the center pipe 50 on the office chair leg body 60, and a first spot welding device 16 for spot welding at the joint of the center pipe 50 and the office chair leg body 60. The first reinforcing welding station 2 comprises a first reinforcing welding workbench 21 for bearing the office chair leg body 60 after spot welding of the center pipe 50, a second compression positioning device 22 for axially compressing the center pipe 50 on the office chair leg body 60, and a first reinforcing welding device 23 for reinforcing welding at the joint of the center pipe 50 and the office chair leg body 60.

[0044] Specifically, the first spot welding workbench 13 and the first reinforcing welding workbench 21 have grooves for positioning the office chair leg body. The utility model arranges and positions the center pipe in the waiting material positioning device 12 through the first vibration disc 11, places the office chair leg body on the first spot welding workbench 13, then places the center pipe on the office chair leg body through the first feeding device 14 and positions the center pipe through the first pressing positioning device 15, then spot welds the joint between the center pipe and the office chair leg body through the first spot welding device 16, preliminarily fixes the center pipe, sends the office chair leg body after spot welding the center pipe to the first reinforcing welding workbench 21 through the transfer device 20, positions the center pipe through the second pressing positioning device 22, and finally reinforces and welds the joint between the center pipe and the office chair leg body through the first reinforcing welding device 23, so that the automatic welding of the center pipe and the office chair leg body is realized, 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 dust to employees, and the risk of industrial injury is minimized.

[0045] The first vibration disc 11 is provided with a screening device, the screening device comprises a screening block 111, on which a through port 1111 matching the shape of the center pipe and through which the center pipe passes in sequence, and a screening push cylinder 112 for driving the screening block 111 to push the center pipe back into the first vibration disc 11 when the center pipe is clamped in the through port 1111. In a specific embodiment, the center pipe has an outer diameter gradually increasing from top to bottom, the large end is welded on the office chair leg body, and the through port 1111 is approximately trapezoidal with a long bottom edge and a short top edge. When the first vibration disc 11 sends the center pipe to the through port 1111, the center pipe needs to match the through port 1111 to pass through, so that only the center pipe in the correct direction can reach the waiting material positioning device 12 to wait for feeding, otherwise it will be sent back into the first vibration disc 11 by the screening block 111 driven by the screening push cylinder 112.

[0046] The waiting material positioning device 12 comprises a material discharge chute 121 connected to the first vibration disc 11 for the center pipe to enter in sequence and a push rod cylinder 122 fixed on the material discharge chute 121, the other end of the material discharge chute 121 is provided with a waiting station 123 for one center pipe to enter, the push rod cylinder 122 is provided with a push rod 1221 that extends to block the remaining center pipes when one center pipe enters the waiting station 123, the push rod 1221 can block the excess center pipes to avoid affecting the feeding device to take away the center pipe on the waiting station 123; when the center pipe on the waiting station 123 is taken away, the push rod cylinder 122 drives the push rod 1221 to retract, so that the next center pipe can slide onto the waiting station 123.

[0047] The utility model discloses, the first installation frame 801 and the second installation frame 802 are arranged on the frame 80, and the first installation frame 801 and the second installation frame 802 are arranged on the frame 80.

[0048] The utility model discloses, first pressure tight positioning device 15 includes the first pressure tight cylinder 151 of vertical setting in first installation frame 801, and the piston rod of first pressure tight cylinder 151 is equipped and is driven by first pressure tight cylinder 151 and is pressed on the pressure block 152 of center tube, when center tube places on office chair foot main part, first pressure tight cylinder 151 drives pressure block 152 to descend and press tight center tube on office chair foot main part and position, and the smooth progress of subsequent welding work is convenient, when welding is completed, pressure block 152 resets. Second pressure tight positioning device 22 is equipped on second installation frame 802, and second pressure tight positioning device 22 with first pressure tight positioning device 15 structure is same, and all includes first pressure tight cylinder and pressure block.

[0049] The first feeding device 14 comprises a clamping cylinder 141 arranged on the first mounting frame 801 and capable of clamping the center pipe from the waiting positioning device 12, a horizontal feeding mechanism driving the clamping cylinder 141 to move horizontally above the waiting positioning device 12 or above the first spot welding workbench 13, and a vertical moving mechanism driving the clamping cylinder 141 to move up and down to clamp or release the center pipe. The horizontal feeding mechanism comprises a first guide rail seat 1421 arranged on the first mounting frame 801, a first horizontal guide rail 1422 arranged transversely on the first guide rail seat 1421, a first sliding table 1423 slidably arranged on the first horizontal guide rail 1422, a first screw nut sliding block 1424 fixed on the first sliding table 1423, a first screw rod 1425 arranged in parallel with the first horizontal guide rail 1422 and passing through the first screw nut sliding block 1424, a first motor 1426 driving the first screw rod 1425 to rotate so as to drive the first screw nut sliding block 1424 to move along the first screw rod 1425 and drive the first sliding table 1423 to move horizontally, a second guide rail seat 1431 arranged on the first sliding table 1423, and the vertical moving mechanism comprising a first vertical guide rail 1432 arranged vertically on the second guide rail seat 1431, a second sliding table 1433 slidably arranged on the first vertical guide rail 1432, a second screw nut sliding block 1434 fixed on the second sliding table 1433, a second screw rod 1435 arranged in parallel with the first vertical guide rail 1432 and passing through the second screw nut sliding block 1434, a second motor 1436 driving the second screw rod 1435 to rotate so as to drive the second screw nut sliding block 1434 to move along the second screw rod 1435 and drive the second sliding table 1433 to move up and down, a cylinder mounting frame 1437 fixed on the second sliding table 1433, and the clamping cylinder 141 mounted on the cylinder mounting frame 1437. Through the above structure, the clamping cylinder 141 can move up and down and horizontally, and move flexibly between the waiting station 123 and the first spot welding workbench 13. When the clamping cylinder 141 clamps the center pipe, the second motor 1436 drives the clamping cylinder 141 to move up, then the first motor 1426 drives the clamping cylinder 141 to move horizontally above the first spot welding workbench 13, and finally the clamping cylinder 141 places the center pipe on the office chair leg body; when the feeding is completed, the clamping cylinder 141 is reset above the waiting station 123.

[0050] The first spot welding device 16 comprises a third guide rail base 161 arranged on the first mounting frame 801, a second vertical guide rail 162 arranged vertically on the third guide rail base 161, a third sliding table 163 slidably arranged on the second vertical guide rail 162, a third screw nut sliding block 164 fixed on the third sliding table 163, a third screw rod 165 arranged in parallel with the second vertical guide rail 162 and passing through the third screw nut sliding block 164, a third motor 166 driving the third screw rod 165 to rotate so as to drive the third screw nut sliding block 164 to move along the third screw rod 165 and drive the third sliding table 163 to move up and down, a first welding gun 167 arranged on the third sliding table 163, and the first reinforcing welding device 23 comprises a fourth guide rail base 231 arranged on the second mounting frame 802, a third vertical guide rail 232 arranged vertically on the fourth guide rail base 231, a fourth sliding table 233 slidably arranged on the third vertical guide rail 232, a fourth screw nut sliding block 234 fixed on the fourth sliding table 233, a fourth screw rod 235 arranged in parallel with the third vertical guide rail 232 and passing through the fourth screw nut sliding block 234, a fourth motor 236 driving the fourth screw rod 235 to rotate so as to drive the fourth screw nut sliding block 234 to move along the fourth screw rod 235 and drive the fourth sliding table 233 to move up and down, and a second welding gun 237 arranged on the fourth sliding table 233. Through the above structure, the first welding gun 167 and the second welding gun 237 can move up and down, which facilitates welding in the working position and resetting after welding. Specifically, the rack 80 is further provided with a motor driving the first spot welding workbench 13 and the first reinforcing welding workbench 21 to rotate. During the welding process, the first spot welding workbench 13 and the first reinforcing welding workbench 21 can drive the office chair leg body to rotate respectively under the driving of the corresponding motor, which facilitates welding at different positions.

[0051] The second feeding point welding station 3 comprises a feeding workbench 31 capable of carrying the office chair leg body 60, a support inner bone distributing bin 32 for conveying the support inner bone 70, a second feeding device 33 for placing the support inner bone 70 on the support inner bone distributing bin 32 on the office chair leg body 60, a second point welding workbench 34 capable of carrying the office chair leg body 60 after the support inner bone 70 is placed, a first positioning device 35 capable of pushing the support inner bone 70 to make the support inner bone 70 abut against the center tube 50 of the office chair leg body 60, a second positioning device 36 capable of axially pressing the support inner bone 70 on the office chair leg body 60, a second point welding device 37 for point welding the office chair leg body 60 at the joint of the two sides of the support inner bone 70, and a fourth point welding device 38 for point welding the joint of the end of the support inner bone 70 and the center tube 50. The second reinforcing welding station 4 comprises a second reinforcing welding workbench 41 for carrying the office chair leg body 60 after the support inner bone 70 is point welded, a third pressing positioning device 42 for pressing the office chair leg body 60 on the second reinforcing welding workbench 41, and a second reinforcing welding device 43 for reinforcing welding at the joint of the support inner bone 70, the office chair leg body 60 and the center tube 50. The feeding workbench 31, the second point welding workbench 34 and the second reinforcing welding workbench 41 are all arranged on the cam divider 30.

[0052] When the support inner bone needs to be welded, the automatic distributing bin sequentially feeds the support inner bones, and then the second feeding device places the support inner bone on the support inner bone distributing bin on the office chair leg body on the second point welding workbench. The first positioning device pushes one end of the support inner bone to make the other end abut against the center tube located in the middle of the office chair leg body, and at the same time, the second positioning device axially presses the support inner bone on the office chair leg body. Then, the second point welding device welds the joint of the two sides of the support inner bone and the office chair leg body, and the second reinforcing welding device welds the joint of the end of the support inner bone and the center tube. When one support inner bone is welded, the cam divider drives the second point welding workbench to rotate to make one support inner bone to be welded move to the welding station, and then the above-mentioned positioning and welding steps are repeated.

[0053] The first positioning device 35 comprises a first support 351 arranged on the frame 1, a first cylinder 352 arranged on the first support 351, a second cylinder 353 arranged on the first cylinder 352 and capable of moving towards the second spot welding workbench 34 driven by the first cylinder 352, and a third cylinder 354 arranged on the second cylinder 353 and capable of moving above the support inner bone 70 with the movement of the second cylinder 353, wherein the third cylinder 354 is provided with a cylinder rod 3541 extending to one end side of the support inner bone 70 when the third cylinder 354 moves above the support inner bone 70, and the second cylinder 353 pushes the third cylinder 354 to make the cylinder rod 3541 push the support inner bone 70 when the cylinder rod 3541 extends to the one end side of the support inner bone 70, so that the other end of the support inner bone 70 abuts against the center pipe 50. Specifically, the first cylinder 352 and the second cylinder 353 are slide table cylinders, and the third cylinder 354 is a push rod cylinder, the cylinder seat of the first cylinder 352 is arranged on the first support 351, the cylinder seat of the second cylinder 353 is arranged on the slide table of the first cylinder 352, and the third cylinder 354 is arranged on the slide table of the second cylinder 353. When positioning is required, the first cylinder 352 first drives the second cylinder 353 and the third cylinder 354 to approach the support inner bone 70, then the cylinder rod 3541 of the third cylinder 354 extends to the one end side of the support inner bone, and finally the second cylinder 353 drives the third cylinder 354 to move towards the support inner bone, so that the cylinder rod 3541 abuts against the one end of the support inner bone, and the other end of the support inner bone abuts against the center pipe, thereby ensuring the welding quality.

[0054] As shown in Figure 9 The second feeding device 33 also has a horizontal feeding mechanism and a vertical moving mechanism, and the difference from the first spot welding device 16 is that the second feeding device 33 uses an electromagnet to replace a clamping cylinder to suck or place the support inner bone 70.

[0055] In the utility model, the frame 80 is provided with a fourth support 804 located on one side of the second spot welding workbench 34.

[0056] The second positioning device 36 comprises a second pressing cylinder 361 vertically arranged on the fourth mounting frame 804, a rotating support 362 rotatably arranged on a piston rod of the second pressing cylinder 361 and driven by the second pressing cylinder 361 to move towards the second spot welding workbench 34 or away from the second spot welding workbench 34, and a plurality of positioning blocks 363 arranged at a lower end of the rotating support 362 and pressed against the respective support inner bones 70 after the rotating support 362 moves towards the second spot welding workbench 34. After the support inner bones 70 are placed on the office chair leg body 60, the second pressing cylinder 361 drives the positioning blocks 363 to move downwards to press and position the support inner bones 70 on the office chair leg body 60, facilitating the smooth progress of subsequent welding work; and the positioning blocks 363 are reset after welding is completed. Specifically, the positioning blocks 363 are provided with a bayonet 3631 for positioning on the support inner bones 70, and the positioning blocks 363 are evenly distributed in a circumferential direction at the bottom of the rotating support 362, and each group of positioning blocks 363 is provided with two positioning blocks 363 respectively clamped on two ends of the corresponding support inner bones 70.

[0057] The second spot welding device 37 differs from the first spot welding device 16 in that it comprises two welding guns capable of simultaneously welding the positions where the support inner bones on both sides meet the office chair leg body, and the fourth spot welding device 38 has the same structure as the first spot welding device 16. The third pressing and positioning device 42 is arranged on the fifth mounting frame 805 and has the same structure as the second positioning device 36. In a specific implementation, the second reinforcing welding workbench has 10 workbenches, and one support inner bone is welded every two workbenches. The second reinforcing welding device 43 is a welding robot.

[0058] The burr pressing workbench 5 comprises a burr pressing workbench 51 capable of bearing the office chair leg body 60 after welding of the support inner bones 70, and an extrusion device 52 for extruding the flash burrs of the office chair leg body 60 to bend inward. The extrusion device 52 comprises an extrusion cylinder 521 vertically arranged on the sixth mounting frame 806, an extrusion plate 522 arranged on a piston rod of the extrusion cylinder 521 and driven by the extrusion cylinder 521 to move towards the burr pressing workbench 51 or away from the burr pressing workbench 51, and a plurality of extrusion blocks 523 arranged below the extrusion plate 522 and capable of pressing and bending the flash burrs of the office chair leg body 60.

[0059] The third feeding spot welding station 6 comprises a second vibration disc 61 for conveying the roller seat 90, a standby material positioning seat 62 for positioning the roller seat 90, a third feeding device 63 for receiving the roller seat 90 sent by the second vibration disc 61 and positioning the roller seat 90 on the standby material positioning seat 62 in sequence, a third spot welding workbench 64 capable of bearing the office chair leg body 60, a fourth feeding device 65 for placing the roller seat 90 on the standby material positioning seat 62 on the office chair leg body 60, a fourth pressing positioning device 66 for pressing the office chair leg body 60 on the third spot welding workbench 64, and a third spot welding device 67 for spot welding the joint between the roller seat 90 and the office chair leg body 60. The third reinforcing welding station 7 comprises a third reinforcing welding workbench 71 for bearing the office chair leg body 60 after the spot welding of the roller seat 90, a fifth pressing positioning device 72 for pressing the office chair leg body 60 on the third reinforcing welding workbench 71, and a third reinforcing welding device 73 for reinforcing welding the joint between the roller seat 90 and the office chair leg body 60. The third spot welding workbench 64 and the third reinforcing welding workbench 71 are arranged on the cam divider 30. A flattening station 40 is arranged between the third feeding spot welding station 6 and the third reinforcing welding station 7 to flatten the roller seat 90 on the office chair leg body 60. The roller seat is conveyed to the third feeding device by the second vibration disc, the third feeding device positions the roller seat on the standby material positioning seat in sequence to prevent the mispositioning of the second vibration disc, then the fourth feeding device places the roller seat on the standby material positioning seat on the office chair leg body, and then the third spot welding device welds the joint between the roller seat and the office chair leg body. When the spot welding of one roller seat is completed, the cam divider drives the third spot welding workbench to rotate to move the leg of the roller seat to be welded to the welding station, and the aforementioned feeding and welding steps are repeated to realize the automatic spot welding of the roller seat and the office chair leg body. After the spot welding, the transfer device sends the office chair leg body after the spot welding of the roller seat to the third reinforcing welding workbench, then the fifth pressing positioning device positions the office chair leg body on the third reinforcing welding workbench, and then the third reinforcing welding device reinforces welds the joint between the roller seat and the office chair leg body. When the spot welding of one roller seat is completed, the cam divider drives the third reinforcing welding workbench to rotate to move the leg of the roller seat to be welded to the welding station, and the aforementioned feeding and welding steps are repeated to complete the reinforcing welding of the roller seat.

[0060] The flattening station 40 comprises a flattening workbench 401 arranged on the cam divider 30 and capable of bearing the roller seat 90 behind the office chair leg body 60, a sixth pressing positioning device 402 for axially pressing the office chair leg body 60 on the flattening workbench 401 fixedly, and a flattening cylinder 403 arranged above the flattening workbench 401, wherein the flattening cylinder 403 is provided with a push rod 4031 capable of being driven by the flattening cylinder 403 to extend towards the roller seat 90 to press the roller seat 90 on the office chair leg body 60. After the spot welding is completed, the transfer device moves the office chair leg body with the welded roller seat to the flattening workbench 401, and then fixes the office chair leg body on the flattening workbench 401 axially by the sixth pressing positioning device 402 to avoid the office chair leg body from shaking and moving when rotating, and finally the flattening cylinder 403 presses the roller seat flat on the office chair leg body to prevent the roller seat from being lifted due to the cold shrinkage of the solder after the spot welding operation, thereby affecting the subsequent reinforcement welding. After one roller seat is flattened, the cam divider drives the flattening workbench 401 to rotate to move the leg of the office chair leg body with one roller seat to be flattened to the flattening station, and then the above flattening steps are repeated.

[0061] Specifically, the sixth pressing positioning device 402 comprises a third pressing cylinder 4021 arranged vertically on the seventh mounting frame 807, and a rotating pressing disc 4022 arranged rotatably on the piston rod of the third pressing cylinder 4021 and driven by the third pressing cylinder 4021 to move towards the flattening workbench 401 or away from the flattening workbench 401. After the office chair leg body is placed on the flattening workbench 401, the third pressing cylinder 4021 drives the rotating pressing disc 4022 to move downward to press and position the office chair leg body on the flattening workbench 401, thereby facilitating the smooth performance of the subsequent roller seat flattening work; and the flattening workbench 401 is reset after the welding is completed.

[0062] The third feeding device 63 comprises a mounting frame 631 arranged on the frame 80, a row of material seats 632 arranged on the mounting frame 631 and connected with the vibration disc 4 for the roller seats to enter in sequence, a sliding rail 633 horizontally arranged on the mounting frame 631, a sliding block 634 arranged on the sliding rail 633 in a slidable manner, a first pushing cylinder 635 for driving the sliding block 634 to move horizontally along the sliding rail 633, a second pushing cylinder 636 vertically arranged on the sliding block 634, a connecting block 637 driven by the second pushing cylinder 636 to move up and down relative to the mounting frame 631, a first clamping cylinder 638 arranged on the connecting block 637 and capable of placing the roller seat on the row of material seats 632 on the material positioning seat 5, and the material positioning seat 5 is also arranged on the mounting frame 631. The roller seat 90 is in the shape of a cover, has a connecting pipe in the middle for connecting the roller, and the material positioning seat 5 is provided with a boss matched with the roller seat 90 for covering the roller seat 90, and the boss is provided with a positioning hole for inserting the connecting pipe, and specifically, two half cylinders are arranged on the two clamping jaws of the first clamping cylinder 638, and the two half cylinders can be inserted into the connecting pipe after forming a cylinder, and then the two clamping jaws are opened to the two sides so that the two half cylinders are tightly arranged on the inner wall of the connecting pipe, so that the roller seat 90 is firmly locked on the clamping jaw and can move with the first clamping cylinder 638. When the roller seat 90 needs to be fed and positioned, the first pushing cylinder 635 drives the second pushing cylinder 636 to move the first clamping cylinder 638 to one side of the row of material seats 632, the second pushing cylinder 636 drives the first clamping cylinder 638 to move downward, then the clamping jaws of the first clamping cylinder 638 lock the roller seat 90, then the second pushing cylinder 636 drives the first clamping cylinder 638 to move upward to take away the roller seat 90 from the row of material seats 632, the first pushing cylinder 635 drives the second pushing cylinder 636 to move the first clamping cylinder 638 to one side of the material positioning seat 5, and finally the second pushing cylinder 636 drives the first clamping cylinder 638 to move downward to position the roller seat 90 on the material positioning seat 5.

[0063] As shown in the drawings, Figure 17 The fourth feeding device 65 also has a horizontal moving mechanism and a vertical moving mechanism, and the difference from the first spot welding device 16 is that the second clamping cylinder 651 on the fourth feeding device 65 is adapted to the roller seat 90, and the second clamping cylinder 651 clamps the roller seat 90 in the same way as the first clamping cylinder 638. After the second clamping cylinder 651 clamps the roller seat 90, the vertical moving mechanism drives the second clamping cylinder 651 to move upward, then the horizontal moving mechanism drives the second clamping cylinder 651 to move horizontally above the third spot welding workbench 64, and finally the second clamping cylinder 651 places the roller seat 90 on the office chair leg body 60; when the feeding is completed, the second clamping cylinder 651 is reset above the material positioning seat 62.

[0064] The frame 80 is provided with an eighth mounting bracket 808, and the fourth clamping and positioning device 66 is provided on the eighth mounting bracket 808 and has the same structure as the sixth clamping and positioning device 402. The third spot welding device 67 has the same structure as the second spot welding device 37, and includes two welding guns that can be automatically raised and lowered, and can spot weld on both sides of the roller seat 90.

[0065] The frame 80 is provided with a ninth mounting bracket 809, and the fifth clamping and positioning device 72 is provided on the ninth mounting bracket 809 and has the same structure as the sixth clamping and positioning device 402.

[0066] In practice, the third reinforcement welding station 7 has 6 stations, and the third reinforcement welding device 73 is a welding robot.

[0067] like Figure 19 As shown, the flipping station 8 includes a lifting platform 81 capable of welding the office chair leg body 60 after the roller seat 90 is welded; a flipping device 82 capable of grabbing the office chair leg body 60 from the lifting platform 81, flipping it, and placing the flipped office chair leg body 60 back onto the lifting platform 81; and a first lifting device 83 capable of driving the lifting platform 81 upward to send the office chair leg body 60 to the side of the flipping device 82, or driving the lifting platform 81 downward to reset after the flipping device 82 places the flipped office chair leg body 60 back onto the lifting platform 81. After the office chair leg, which has completed the previous process, is placed on the lifting platform by the transfer device, the first lifting device drives the lifting platform upward to send the office chair leg to the side of the flipping device. The flipping device grabs the office chair leg and flips it after the first lifting device drives the lifting platform downward to make room. Then, after the first lifting device drives the lifting platform upward, the flipping device releases the office chair leg, allowing the flipped office chair leg to be placed back on the lifting platform. Finally, the transfer device sends the flipped office chair leg to the reaming station.

[0068] Specifically, the first lifting device 83 includes a first jacking screw 831 supported below the lifting platform 81 and movable up and down relative to the frame 1, a second motor 832 mounted on the frame 1, and a first connecting shaft 834 driven by the second motor 832 to rotate and, during rotation, to move the first jacking screw 831 up and down via a first connecting gear set 833. The first connecting gear set 833 includes multiple meshing gears, with an input gear mounted on the first connecting shaft 834 and an output gear meshing with the first jacking screw 831. When the second motor 832 drives the first connecting shaft 834 to rotate, it drives the first connecting gear set 833, thereby moving the first jacking screw 831 up and down, lifting or lowering the lifting platform 81.

[0069] Specifically, the turnover device 82 comprises a turnover mounting frame 821 mounted on the frame 80 and located at one side of the lifting platform 81, a turnover shaft 822 rotatably arranged on the turnover mounting frame 821, a mounting plate 823 arranged on the turnover shaft 822, a third clamping cylinder 824 arranged on the mounting plate 823, two clamping arms 825 driven by the third clamping cylinder 824 to clamp or release the office chair leg, and a turnover motor 826 mounted on the turnover mounting frame 821 and capable of driving the turnover shaft 822 to rotate to drive the mounting plate 823 to rotate so that the clamping arms 825 drive the office chair leg to turn over. When the lifting platform 81 moves upward with the office chair leg so that one leg of the office chair leg moves between the two clamping arms 825, the third clamping cylinder 824 drives the two clamping arms 825 to close to clamp the leg of the office chair leg, then the lifting platform moves downward to make room, then the turnover motor 826 drives the turnover shaft 822 to rotate, the turnover shaft 822 drives the mounting plate 823 to rotate so that the clamping arms 825 drive the office chair leg to turn over, and finally the lifting platform moves upward and the third clamping cylinder 824 drives the two clamping arms 825 to move away to release the leg of the office chair leg, so that the turned-over office chair leg falls on the lifting platform, and the lifting platform carries the turned-over office chair leg back to the original position.

[0070] Specifically, the mounting plate 823 is provided with a guide rail 827, the guide rail 827 is provided with two sliding blocks 828 capable of sliding horizontally along the guide rail 827, and the two clamping arms 825 are respectively and correspondingly arranged on the two sliding blocks 828. Through the above structure, the clamping arms 825 can operate stably.

[0071] The reaming station 9 comprises a reaming workbench 91 capable of bearing the turned-over office chair leg body 60, a fifth pressing positioning device 92 for axially pressing and fixing the office chair leg body 60 on the reaming workbench 91, and a reaming device 93 for reaming.

[0072] Specifically, the reaming device 93 comprises a reaming mounting frame 931 mounted on the frame 80, a seventh pressing positioning device 932 arranged on the reaming mounting frame 931 and used for axially pressing and fixing the office chair leg on the reaming workbench 91, a reaming cutter 933 capable of descending to the office chair leg after the seventh pressing positioning device 932 presses and fixes the office chair leg, and a driving device 934 for driving the reaming cutter 933 to rotate to ream. The driving device 934 is a driving motor. When the seventh pressing positioning device 932 presses and fixes the office chair leg and the reaming cutter 933 is driven by the machine head internal lifting assembly to descend to the office chair leg, the driving motor drives the reaming cutter 933 to rotate to ream.

[0073] Specifically, the seventh pressing positioning device 932 comprises a pressing cylinder 9321 vertically arranged on the second mounting frame 931, a pressing block 9322 arranged on the piston rod of the pressing cylinder 9321 and driven by the pressing cylinder 9321 to move towards the hole reaming workbench 5 or away from the hole reaming workbench 5, and a through hole is arranged on the pressing block 9322 for the hole reaming cutter 933 to pass through.

[0074] As shown in Figure 23 The unloading station 10 comprises a conveying belt 101, a receiving workbench 102 for bearing the office chair leg after hole reaming, and a second lifting device 103 capable of driving the receiving workbench 102 to move upwards to receive the office chair leg delivered by the transfer device 20 or to move downwards to place the office chair leg on the conveying belt 101. The second lifting device 103 comprises a pushing cylinder 103, and the receiving workbench 102 is arranged on the cylinder rod 1031 of the pushing cylinder 103.

[0075] In the utility model, the plurality of stations are linearly distributed, the transfer device 20 comprises a carrying block 201 arranged at each station, a vertical driving mechanism 202 for driving the carrying block 201 to move upwards to take away the office chair leg body 60 on each station, and a horizontal driving mechanism 203 for driving the carrying block 201 to move horizontally to the next station with the office chair leg body 60. The horizontal driving mechanism 203 comprises a fifth guide rail base 2031 extending from the first spot welding workbench 13 to the first reinforcing welding workbench 21 and capable of moving up and down relative to the rack 80, a second horizontal guide rail 2033 arranged along the length direction of the fifth guide rail base 2031, a fifth sliding table 2034 slidably arranged on the second horizontal guide rail 2033, a fifth screw nut sliding block 2035 fixed on the fifth sliding table 2034, a fifth screw rod 2036 arranged in parallel with the second horizontal guide rail 2033 and sleeved on the fifth screw nut sliding block 2035, a seventh motor 2037 for driving the fifth screw rod 2036 to rotate so that the fifth screw nut sliding block 2035 moves along the fifth screw rod 2036 to drive the fifth sliding table 2034 to move horizontally, and the carrying block 98 is arranged on the fifth sliding table 2034. In the initial state, the carrying block 201 is below the office chair leg body, after the central pipe is spot welded on the office chair leg body, the vertical driving mechanism 202 drives the fifth guide rail base 2031 to move upwards, so that the carrying block 201 moves upwards to support the office chair leg body, then the seventh motor 2037 works, drives the fifth screw rod 2036 to rotate so that the fifth screw nut sliding block 2035 moves along the fifth screw rod 2036 to drive the fifth sliding table 2034 to move horizontally, so that the carrying block 201 with the office chair leg body arrives at the first reinforcing welding workbench 21, and finally the vertical driving mechanism 202 drives the fifth guide rail base 2031 to move downwards to make the office chair leg body fall on the first reinforcing welding workbench 21 to be positioned, and then reinforcing welding is carried out.

[0076] Specifically, the vertical driving mechanism 202 comprises a second push screw 2021 supported below the fifth guide rail seat 2031 and movable up and down relative to the rack 80, an eighth motor 2022 arranged on the rack 80, a connecting rotating shaft 2024 driven to rotate by the eighth motor 2022 and driving the second push screw 2021 to move up and down through a meshing gear set 2023 when rotating. The meshing gear set 2023 comprises a plurality of meshing gears, one input gear arranged on the connecting rotating shaft 2024 and one output gear meshing with the second push screw 2021. When the eighth motor 2022 drives the connecting rotating shaft 2024 to rotate, the meshing gear set 2023 is driven to rotate, thereby driving the second push screw 2021 to move up and down, lifting or lowering the fifth guide rail seat 2031.

Claims

1. An office chair foot automated production line, characterized by: The utility model provides a kind of office chair leg production line, including the first feeding spot welding station (1) for spot welding center tube (50) on office chair leg body (60), the first reinforcing welding station (2) for reinforcing welding at the joint of center tube (50) and office chair leg body (60) is equipped on the side of the first feeding spot welding station (1), the second feeding spot welding station (3) for spot welding multiple support inner bones (70) on office chair leg body (60) is equipped on the side of the first reinforcing welding station (2), multiple second reinforcing welding stations (4) for reinforcing welding different support inner bones (70) respectively are equipped on the side of the second feeding spot welding station (3), the burr pressing station (5) for bending the burr of extrusion office chair leg body (60) to inside is equipped on the side of the second reinforcing welding station (4) away from the second feeding spot welding station (3), the third feeding spot welding station (6) for spot welding multiple roller seat (90) on office chair leg body (60) is equipped on the side of the burr pressing station (5), multiple third reinforcing welding stations (7) for reinforcing welding different roller seat (90) respectively are equipped on the side of the third feeding spot welding station (6), the turnover station (8) for overturning office chair leg body (60) after welding roller seat (90) is equipped on the side of the third reinforcing welding station (7) away from the third feeding spot welding station (6), the reaming station (9) for reaming center tube (50) on office chair leg body (60) is equipped on the side of the turnover station (8), the unloading station (10) for outputting finished product office chair leg after reaming is equipped on the side of the reaming station (9), and conveying device (20) is conveyed between adjacent stations.

2. The office chair foot automated production line of claim 1, wherein: The first feeding spot welding station (1) includes a first vibration plate (11) for conveying center tube (50), a waiting positioning device (12) for receiving multiple center tubes (50) sent by the first vibration plate (11) and sequentially arranging and positioning, a first spot welding workbench (13) for carrying office chair leg body (60), a first feeding device (14) for placing the center tube (50) on the waiting positioning device (12) on the office chair leg body (60), a first compression positioning device (15) for axially compressing the center tube (50) on the office chair leg body (60), and a first spot welding device (16) for spot welding at the joint of the center tube (50) and the office chair leg body (60), the first reinforcing welding station (2) includes a first reinforcing welding workbench (21) for carrying the office chair leg body (60) after spot welding the center tube (50), a second compression positioning device (22) for axially compressing the center tube (50) on the office chair leg body (60), and a first reinforcing welding device (23) for reinforcing welding at the joint of the center tube (50) and the office chair leg body (60).

3. The office chair foot automated production line of claim 1, wherein: The second feeding point welding station (3) comprises a feeding workbench (31) capable of carrying the office chair leg body (60), a support inner bone distribution bin (32) for conveying the support inner bone (70), a second feeding device (33) for placing the support inner bone on the support inner bone distribution bin (32) on the office chair leg body (60), a second spot welding workbench (34) capable of carrying the office chair leg body (60) after the support inner bone (70) is placed, a first positioning device (35) capable of pushing the support inner bone (70) to abut against the center tube (50) of the office chair leg body (60), a second positioning device (36) capable of axially pressing the support inner bone (70) on the office chair leg body (60), a second spot welding device (37) for spot welding the office chair leg body (60) at the joint of the two sides of the support inner bone (70), and a fourth spot welding device (38) for spot welding the joint of the end of the support inner bone (70) and the center tube (50), the second reinforcing welding station (4) comprises a second reinforcing welding workbench (41) for carrying the office chair leg body (60) after the support inner bone (70) is spot welded, a third pressing positioning device (42) for pressing the office chair leg body (60) on the second reinforcing welding workbench (41), and a second reinforcing welding device (43) for reinforcing welding at the joint of the support inner bone (70) and the office chair leg body (60) and the center tube (50), and the feeding workbench (31), the second spot welding workbench (34) and the second reinforcing welding workbench (41) are arranged on the cam divider (30).

4. The office chair foot automated production line of claim 1, wherein: The burr pressing station (5) comprises a burr pressing workbench (51) capable of carrying the office chair leg body (60) after the support inner bone (70) is welded, and an extrusion device (52) for extruding the flash burr of the office chair leg body (60) to the inside.

5. The office chair foot automated production line of claim 1, wherein: The third feeding spot welding station (6) comprises a second vibrating disc (61) for conveying the roller seat (90), a standby material positioning seat (62) for positioning the roller seat (90), a third feeding device (63) for receiving the roller seat (90) sent by the second vibrating disc (61) and sequentially positioning the roller seat (90) on the standby material positioning seat (62), a third spot welding workbench (64) capable of bearing the office chair leg body (60), a fourth feeding device (65) for placing the roller seat (90) on the standby material positioning seat (62) on the office chair leg body (60), a fourth pressing positioning device (66) for pressing the office chair leg body (60) on the third spot welding workbench (64), and a third spot welding device (67) for spot welding at the joint between the roller seat (90) and the office chair leg body (60), the third reinforcing welding station (7) comprises a third reinforcing welding workbench (71) for bearing the office chair leg body (60) after the spot welding of the roller seat (90), a fifth pressing positioning device (72) for pressing the office chair leg body (60) on the third reinforcing welding workbench (71), and a third reinforcing welding device (73) for reinforcing welding at the joint between the roller seat (90) and the office chair leg body (60), the third spot welding workbench (64) and the third reinforcing welding workbench (71) are arranged on the cam divider (30), and the third feeding spot welding station (6) and the third reinforcing welding station (7) are provided with a flattening station (40) for flattening the roller seat (90) on the office chair leg body (60).

6. The office chair foot automated production line of claim 5, wherein: The flattening station (40) comprises a flattening workbench (401) arranged on the cam divider (30) and capable of bearing the office chair leg body (60) after the spot welding of the roller seat (90), a sixth pressing positioning device (402) for axially pressing and fixing the office chair leg body (60) on the flattening workbench (401), and a flattening cylinder (403) arranged above the flattening workbench (401), the flattening cylinder (403) is provided with a push rod (4031) capable of being driven by the flattening cylinder (403) to extend towards the roller seat (90) to flatten the roller seat (90) on the office chair leg body (60).

7. The office chair foot automated production line of claim 1, wherein: The overturning station (8) comprises a lifting platform (81) capable of welding the office chair leg body (60) after the spot welding of the roller seat (90), an overturning device (82) capable of grabbing the office chair leg body (60) from the lifting platform (81) to overturn and placing the overturned office chair leg body (60) back on the lifting platform (81), and a first lifting device (83) capable of driving the lifting platform (81) to move upwards to send the office chair leg body (60) to one side of the overturning device (82) or to move downwards to reset after the overturned office chair leg body (60) is placed back on the lifting platform (81) by the overturning device (82).

8. The office chair foot automated production line of claim 1, wherein: The hinge drilling station (9) comprises a hinge drilling workbench (91) capable of carrying the turned office chair leg body (60), an eighth pressing positioning device (92) for axially pressing the office chair leg body (60) on the hinge drilling workbench (91), and a hinge drilling device (93) for drilling.

9. The office chair foot automated production line of claim 1, wherein: The unloading station (10) comprises a conveying belt (101), a receiving workbench (102) for carrying the finished office chair leg after hinge drilling, and a second lifting device (103) capable of driving the receiving workbench (102) to move upwards to receive the finished office chair leg delivered by the transfer device (20) or to move downwards to place the finished office chair leg on the conveying belt (101).

10. The office chair foot automated production line of claim 1, wherein: The plurality of stations are linearly distributed, and the transfer device (20) comprises a carrying block (201) arranged at each station, a vertical driving mechanism (202) for driving the carrying block (201) to move upwards to take away the office chair leg body (60) on each station, and a horizontal driving mechanism (203) for driving the carrying block (201) to horizontally move the office chair leg body (60) to the next station.

Images