Automatic chair welding device

Abstract

The utility model relates to the technical field of chair processing, in particular to an automatic chair welding device which comprises a box body, a workbench is fixedly installed at the top end of the box body, racks are symmetrically arranged on the two sides of the top end of the workbench, and Y-axis-shaped sliding table modules are arranged at the top ends of the two racks. And an X-axis type sliding table module is arranged between the two Y-axis type sliding table modules. The working table, the clamping head, the bracket and the welding head are used in cooperation, a transverse strip needing to be welded to the supporting legs is placed on the bracket, the two sides of the transverse strip are lapped on the surfaces of the upper ends of the supporting legs, then the position of the welding head is controlled through the Y-axis sliding table module and the X-axis sliding table module, after position positioning is completed, an electric push rod is started, and the welding head is welded to the supporting legs. The electric push rod controls the welding head to descend to automatically weld the connecting positions of the two ends of the transverse strip and the supporting legs, in this way, when a seat is welded, a worker only needs to place the worker on the device, automatic welding can be conducted, and therefore the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chair processing, in particular to an automatic welding device for chairs. Background Art

[0002] A chair is a common piece of furniture used for people to sit down and rest or work. It is usually composed of a seat, a pair of supports (i.e., the backrest) and a set of supporting legs. Chair welding is an important step in the manufacture of metal chairs, which is mainly used to firmly connect the various metal parts of the chair together.

[0003] A horizontal bar is welded between the seat and the supporting legs. During installation, the seat and the horizontal bar are connected and fixed by bolts. Therefore, when processing the chair, two or more horizontal bars need to be welded between the tops of the two supporting legs. Currently, during processing, workers usually perform welding manually, which is inefficient. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic welding device for a chair to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An automatic welding device for chairs, comprising

[0007] A box, a workbench is fixedly installed on the top of the box, racks are symmetrically arranged on both sides of the top of the workbench, Y-axis-type slide modules are arranged on the tops of the two racks, an X-axis-type slide module is arranged between the two Y-axis-type slide modules, and a welding mechanism is arranged on one side of the X-axis-type slide module;

[0008] The motor is fixedly installed on the outer side of the middle part of one end of the workbench, a pair of clamps are movably installed at the four corners of the workbench, a driving mechanism is arranged between the output shaft of the motor and the clamp, and lifting mechanisms are arranged on both sides of the middle part of the workbench.

[0009] Preferably, the welding mechanism comprises a hanger, an electric push rod and a welding head, a hanger is arranged on one side of the X-axis line slide module, the electric push rod is fixedly installed on the top of the hanger, and the output shaft of the electric push rod passes through the hanger to fix the welding head;

[0010] Preferably, the driving mechanism comprises a transmission shaft, a thread groove, a nut sleeve and a connecting piece, the output shaft of the motor is located in the middle of the inner side of the workbench and fixedly connected to the transmission shaft, a pair of thread grooves with opposite thread directions are provided on the outer sides of both ends of the transmission shaft, the thread grooves are threadedly connected to the nut sleeve, and both sides of the nut sleeve are fixedly connected to the clamp through the connecting piece;

[0011] Preferably, the lifting mechanism comprises a lifting cylinder, a bracket, a clamping cylinder and a chuck, the lifting cylinder is fixedly installed on both sides of the middle of the bottom end of the workbench, and the output shafts of the two lifting cylinders are fixedly connected to the bracket;

[0012] Preferably, clamping cylinders are provided on both sides of the middle of the bracket, and the output shafts of the clamping cylinders are fixedly connected to the chucks;

[0013] Preferably, guide rods are arranged outside the bottom ends of both sides of the bracket, and guide grooves movably sleeved with the guide rods are opened on both sides of the workbench below the bracket.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. This automatic welding device for chairs is used in conjunction with a workbench, a clamping head, a bracket and a welding head. The horizontal bar to be welded with the supporting legs is placed on the bracket, and the two sides of the horizontal bar are placed on the upper surface of the supporting legs. The position of the welding head is controlled by the Y-axis line slide module and the X-axis line slide module. When the position positioning is completed, the electric push rod is started, and the electric push rod controls the welding head to descend to automatically weld the two ends of the horizontal bar and the supporting legs. In this way, when welding the seat, the worker only needs to place the worker on the device to perform automatic welding, thereby improving the welding efficiency.

[0016] 2. This automatic welding device for chairs is used in conjunction with a bracket, a clamping cylinder, a chuck, a guide rod and a guide groove. The bracket can control the lifting height through the lifting cylinder, which is convenient for adapting to support feet of different heights. The horizontal bar is placed on the bracket, and the clamping cylinders on both sides of the middle of the bracket can be started. The clamping cylinder controls the chuck at the end to be clamped horizontally in the bracket, so that the horizontal bar can be prevented from displacement during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the motor installation of the utility model;

[0019] Figure 3 It is a top view schematic diagram of the workbench of the utility model;

[0020] Figure 4 For the utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0021] Figure 5 For the utility model Figure 2 The enlarged schematic diagram of point B in the middle;

[0022] Figure 6For the utility model Figure 3 Enlarged schematic diagram at point C in the middle.

[0023] In the figure: 1. Box; 2. Workbench; 3. Frame; 4. Y-axis line slide module; 5. X-axis line slide module; 6. Motor; 7. Chuck; 8. Hanger; 9. Electric push rod; 10. Welding head; 11. Transmission shaft; 12. Thread groove; 13. Nut sleeve; 14. Connector; 15. Lifting cylinder; 16. Bracket; 17. Clamping cylinder; 18. Chuck; 19. Guide rod; 20. Guide groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-6 As shown, a technical solution provided by the utility model:

[0026] A chair automatic welding device comprises a box body 1, a workbench 2 is fixedly installed on the top of the box body 1, racks 3 are symmetrically arranged on both sides of the top of the workbench 2, Y-axis line slide modules 4 are arranged on the tops of the two racks 3, an X-axis line slide module 5 is arranged between the two Y-axis line slide modules 4, a welding mechanism and a motor 6 are arranged on one side of the X-axis line slide module 5, the motor 6 is fixedly installed on the outer side of the middle part of one end of the workbench 2, a pair of clamping heads 7 are movably installed at the four corners of the workbench 2, a driving mechanism is arranged between the output shaft of the motor 6 and the clamping head 7, a lifting mechanism is arranged on both sides of the middle part of the workbench 2, the welding mechanism comprises a hanger 8, an electric push rod 9 and a welding head 10, a hanger 8 is arranged on one side of the X-axis line slide module 5, an electric push rod 9 is fixedly installed on the top of the hanger 8, and the output shaft of the electric push rod 9 passes through the hanger 8 to fix the welding head 10;

[0027] In this embodiment, when working, first place the two seat support feet between a pair of clamps 7 on both sides of the workbench 2 respectively, then start the motor 6, the motor 6 controls the transmission shaft 11 to rotate, the transmission shaft 11 controls the nut sleeve 13 to move linearly through the threaded groove 12, and then drives the clamp 7 to clamp and fix the support feet through the connecting piece 14, and then start the lifting cylinder 15, the lifting cylinder 15 controls the bracket 16 to lift, and then place the horizontal bar that needs to be welded with the support feet on the bracket 16, and the two sides of the horizontal bar are placed on the upper end surface of the support feet, and then control the position of the welding head 10 through the Y-axis line slide module 4 and the X-axis line slide module 5. When the positioning is completed, start the electric push rod 9, and the electric push rod 9 controls the welding head 10 to descend to automatically weld the two ends of the horizontal bar to the connecting position with the support feet. In this way, when welding the seat, the worker only needs to place the worker on this device to perform automatic welding, thereby improving the welding efficiency.

[0028] like Figure 3 As shown, the driving mechanism includes a transmission shaft 11, a thread groove 12, a nut sleeve 13 and a connecting piece 14. The output shaft of the motor 6 is located in the middle of the inner side of the workbench 2 and is fixedly connected to the transmission shaft 11. A pair of thread grooves 12 with opposite thread directions are provided on the outer sides of both ends of the transmission shaft 11. The thread grooves 12 are threadedly connected to the nut sleeve 13. Both sides of the nut sleeve 13 are fixedly connected to the clamp 7 through the connecting piece 14.

[0029] In this embodiment, since the thread directions of the thread grooves 12 at both ends of the transmission shaft 11 are opposite, when the motor 6 drives the transmission shaft 11 to rotate, the thread grooves 12 will control the two nut sleeves 13 to move in the same direction or in opposite directions. When the nut sleeves 13 move in the same direction, they can control the clamping head 7 to clamp the supporting foot. When the nut sleeves 13 move in the opposite direction, the clamped clamping head 7 can be withdrawn from both sides of the supporting foot, thereby achieving the purpose of facilitating clamping and fixing.

[0030] like Figure 5 As shown, the lifting mechanism includes a lifting cylinder 15, a bracket 16, a clamping cylinder 17 and a chuck 18. The lifting cylinder 15 is fixedly installed on both sides of the middle of the bottom end of the workbench 2. The output shafts of the two lifting cylinders 15 are fixedly connected to the bracket 16. The clamping cylinders 17 are arranged on both sides of the middle of the bracket 16. The output shafts of the clamping cylinders 17 are fixedly connected to the chuck 18. Guide rods 19 are arranged on the outside of the bottom ends of both sides of the bracket 16. Guide grooves 20 movably connected to the guide rods 19 are opened on both sides of the workbench 2 near the bottom of the bracket 16.

[0031] In this embodiment, the bracket 16 can control the lifting height through the lifting cylinder 15, which is convenient for adapting to support feet of different heights, and the horizontal bar is placed on the bracket 16, and the clamping cylinders 17 on both sides of the middle of the bracket 16 can be started. The clamping cylinders 17 control the clamps 18 at the end to clamp them horizontally in the bracket 16, so that the horizontal bar can be prevented from displacement during welding.

[0032] Working principle: When working, first place the two seat support feet between a pair of clamps 7 on both sides of the workbench 2, and then start the motor 6. The motor 6 controls the rotation of the transmission shaft 11. The transmission shaft 11 controls the linear movement of the nut sleeve 13 through the threaded groove 12, and then drives the clamp 7 through the connecting piece 14 to clamp and fix the support feet. Then start the lifting cylinder 15. The lifting cylinder 15 controls the lifting of the bracket 16. Then place the horizontal bar that needs to be welded with the support feet on the bracket 16, and the two sides of the horizontal bar are placed on the upper end surface of the support feet. Then control the position of the welding head 10 through the Y-axis slide module 4 and the X-axis slide module 5. When the positioning is completed, start the electric push rod 9. The electric push rod 9 controls the welding head 10 to descend and automatically weld the two ends of the horizontal bar to the connecting position with the support feet.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic welding device for chairs, characterized in that: include A box body (1), a workbench (2) is fixedly mounted on the top of the box body (1), racks (3) are symmetrically arranged on both sides of the top of the workbench (2), a Y-axis-type slide module (4) is arranged on the top of the two racks (3), an X-axis-type slide module (5) is arranged between the two Y-axis-type slide modules (4), and a welding mechanism is arranged on one side of the X-axis-type slide module (5); A motor (6) is fixedly mounted on the outer side of the middle part of one end of the workbench (2); a pair of clamps (7) are movably mounted on the four corners of the workbench (2); a driving mechanism is arranged between the output shaft of the motor (6) and the clamps (7); and lifting mechanisms are arranged on both sides of the middle part of the workbench (2).

2. The automatic welding device for chairs according to claim 1, characterized in that: The welding mechanism comprises a hanger (8), an electric push rod (9) and a welding head (10); a hanger (8) is arranged on one side of the X-axis line slide module (5); the electric push rod (9) is fixedly installed on the top of the hanger (8); and the output shaft of the electric push rod (9) passes through the hanger (8) to fix the welding head (10).

3. The automatic welding device for chairs according to claim 1, characterized in that: The driving mechanism comprises a transmission shaft (11), a thread groove (12), a nut sleeve (13) and a connecting piece (14); the output shaft of the motor (6) is located in the middle of the inner side of the workbench (2) and is fixedly connected to the transmission shaft (11); a pair of thread grooves (12) with opposite thread directions are provided on the outer sides of both ends of the transmission shaft (11); the thread grooves (12) are threadedly connected to the nut sleeve (13); and both sides of the nut sleeve (13) are fixedly connected to the clamp (7) through the connecting piece (14).

4. The automatic welding device for chairs according to claim 1, characterized in that: The lifting mechanism comprises a lifting cylinder (15), a bracket (16), a clamping cylinder (17) and a clamp (18); the lifting cylinder (15) is fixedly mounted on both sides of the middle of the bottom end of the workbench (2); and the output shafts of the two lifting cylinders (15) are fixedly connected to the bracket (16).

5. The automatic welding device for chairs according to claim 4, characterized in that: A clamping cylinder (17) is provided on both sides of the middle of the bracket (16), and the output shaft of the clamping cylinder (17) is fixedly connected to a clamping head (18).

6. The automatic welding device for chairs according to claim 4, characterized in that: Guide rods (19) are arranged outside the bottom ends of both sides of the bracket (16), and guide grooves (20) movably sleeved with the guide rods (19) are opened on both sides of the workbench (2) below the bracket (16).

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