Quick positioning tool for welding sofa frame

Abstract

The invention provides a quick positioning tool for sofa frame welding, and belongs to the technical field of sofa frame welding. Comprising a machining platform, a clamping assembly and a positioning assembly, the clamping assembly comprises a sliding rail installed in the machining platform, and the inner wall of the sliding rail is slidably connected with a toothed plate. According to the clamping device, toothed plates are driven by an air cylinder to transversely move, opposite toothed plates are driven by transmission of a transmission wheel to oppositely move, then opposite movement of two sets of clamping plates is achieved, a metal part can be clamped in the Y-axis direction in a three-dimensional coordinate system, and then a screw rod is driven by a motor to rotate; the two sets of clamping blocks are driven to move oppositely through rotation of the screw rod, metal pieces are clamped in the X-axis direction, multi-angle clamping of the metal pieces in the sofa frame is improved, meanwhile, sofa frames of different sizes can be matched, the application range of the device is widened, labor input can be reduced, and the dynamic adaptation capacity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sofa frame welding, and particularly relates to a quick positioning tooling for sofa frame welding. Background Art

[0002] The sofa frame is the main supporting structure of the sofa, which is made of wood, metal or other materials to provide the stability and durability of the sofa. In order to provide the strength of the sofa frame, it is usually made by welding metal parts.

[0003] In the field of sofa frame welding, traditional jigs generally have the problems of fixed structure and single function, and it is difficult to meet the diversified and complex welding requirements. For example, most jigs only support horizontal or vertical fixation and cannot meet the processing requirements of special-shaped frames, multi-component collaborative welding and new lightweight materials. At the same time, relying on manual debugging and lacking dynamic adaptation ability lead to low positioning efficiency, poor accuracy, and easy workpiece displacement due to uneven clamping force or thermal deformation during the welding process. To address the above problems and defects, a quick positioning tooling for sofa frame welding is urgently needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a quick positioning tooling for sofa frame welding to solve the problems existing in the field of sofa frame welding, that is, traditional jigs generally have the problems of fixed structure and single function, and it is difficult to meet the diversified and complex welding requirements. For example, most jigs only support horizontal or vertical fixation and cannot meet the processing requirements of special-shaped frames, multi-component collaborative welding and new lightweight materials. At the same time, relying on manual debugging and lacking dynamic adaptation ability lead to low positioning efficiency, poor accuracy, and easy workpiece displacement due to uneven clamping force or thermal deformation during the welding process.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A quick positioning tooling for sofa frame welding, comprising: a processing platform, and a clamping assembly and a positioning assembly installed on the processing platform; the clamping assembly includes a slide rail installed in the processing platform, a toothed plate is slidably connected to the inner wall of the slide rail, an auxiliary plate is slidably connected to the inner wall of the toothed plate, a cylinder is fixedly assembled on the outer wall of the processing platform, a connecting block is fixedly assembled at the end of the telescopic end of the cylinder, the connecting block penetrates the processing platform, and the end of the connecting block away from the cylinder is fixedly connected to the side wall of the toothed plate, a transmission wheel is rotatably connected to the inner wall of the processing platform, a through hole is opened at the top of the processing platform, a positioning frame is fixedly assembled at the top of the toothed plate, the positioning frame penetrates the through hole, and a clamping plate is fixedly assembled at the top of the positioning frame.

[0006] Preferably, the positioning component includes an inner cavity formed in the clamping plate. A motor is fixedly assembled on the outer wall of the clamping plate. The end of the output shaft of the motor is fixedly connected to a speed reducer. The end of the output shaft of the speed reducer is fixedly assembled with a screw rod. A moving ring is threadedly connected to the outer wall of the screw rod. A clamping block is fixedly assembled on the side of the moving ring away from the screw rod.

[0007] Preferably, a groove is formed in the outer wall of the clamping block. A positioning tube is fixedly assembled on the inner wall of the groove. A spring is fixedly assembled on the inner wall of the positioning tube. A positioning pin is fixedly assembled on the end of the spring away from the positioning tube.

[0008] Preferably, a sliding groove is formed in the outer wall of the positioning tube. A slider is slidably connected to the inner wall of the sliding groove. The side of the slider away from the sliding groove is fixedly connected to the positioning pin.

[0009] Preferably, limiting grooves are formed on both sides of the slide rail. A fixing block is fixedly assembled at the bottom of the toothed plate. A pulley is rotatably connected to the side of the fixing block away from the toothed plate. The outer wall of the pulley is in rolling connection with the limiting groove.

[0010] Preferably, a connecting groove is formed at the top of the slide rail. A roller is rotatably connected to the bottom of the auxiliary plate. The outer wall of the roller is in rolling connection with the connecting groove. An adapting groove is formed in the inner wall of the toothed plate.

[0011] Preferably, a brush is fixedly assembled on the inner wall of the through hole. The number of the brushes is several, and several brushes are evenly distributed on both sides of the inner wall of the through hole.

[0012] Preferably, the number of the toothed plates, the auxiliary plates and the clamping plates is two groups. The two groups of toothed plates and the auxiliary plates are symmetrically distributed on both sides of the transmission wheel. The positions of the two groups of toothed plates and the auxiliary plates are opposite.

[0013] Preferably, the shapes of the positioning frame and the clamping block are both "L" type, and the width of the clamping block is adapted to the height of the positioning frame.

[0014] Preferably, the number of the positioning tubes, the springs and the positioning pins is several groups, and several groups of positioning tubes, springs and positioning pins are evenly distributed on the inner wall of the groove.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: 1. In the above solution, the cylinder is used to drive the toothed plate to move horizontally, and the transmission wheel drives the toothed plate on the opposite side to move in the opposite direction, thereby realizing the opposite movement of the two sets of clamping plates, enabling the clamping of the metal part in the Y-axis direction of the three-dimensional coordinate system. Then, the motor is used to drive the screw to rotate, and the rotation of the screw drives the two sets of clamping blocks to move in the opposite direction, clamping the metal part in the X-axis direction. This is beneficial to improving the multi-angle clamping of the metal parts in the sofa frame, and at the same time can adapt to sofa frames of different sizes, expanding the application range of the device. It can also reduce the labor input and improve the dynamic adaptation ability.

[0016] 2. In the above solution, by setting the positioning tube, spring and positioning pin, when the clamping block clamps the metal part, the metal part squeezes the positioning pin, and the positioning pin moves into the interior of the positioning tube. The positioning pin that does not contact the metal part can limit the metal part to a certain extent. This not only improves the clamping effect on the metal part, but also locates the special-shaped metal part, which is beneficial to improving the reliability and stability of the positioning component and ensuring the welding accuracy of the sofa frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0018] Figure 1 is a three-dimensional structural schematic diagram of a quick positioning tooling for sofa frame welding; Figure 2 is a first perspective sectional three-dimensional structural schematic diagram of a quick positioning tooling for sofa frame welding; Figure 3 is a second perspective sectional three-dimensional structural schematic diagram of a quick positioning tooling for sofa frame welding; Figure 4 is a partial sectional enlarged three-dimensional structural schematic diagram of a quick positioning tooling for sofa frame welding; Figure 5 is a third perspective sectional three-dimensional structural schematic diagram of a quick positioning tooling for sofa frame welding; Figure 6 is Figure 3 an enlarged three-dimensional structural schematic diagram of part A in Figure 7 is Figure 3 an enlarged three-dimensional structural schematic diagram of part B in Figure 8 is Figure 5 an enlarged three-dimensional structural schematic diagram of part C in Figure 9 is Figure 8 an enlarged three-dimensional structural schematic diagram of part D in

[0019] Reference numerals: 1, processing platform; 2, clamping assembly; 21, slide rail; 211, limit groove; 212, connection groove; 22, toothed plate; 221, fixing block; 222, pulley; 223, mating groove; 23, auxiliary plate; 231, roller; 24, cylinder; 25, connecting block; 26, transmission wheel; 27, through hole; 271, brush; 28, positioning bracket; 29, clamping plate; 3, positioning assembly; 31, inner cavity; 32, motor; 33, reduction gearbox; 34, screw; 35, moving ring; 36, clamping block; 361, groove; 362, positioning tube; 363, spring; 364, positioning pin; 365, chute; 366, slider.

[0020] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. Detailed implementation manners

[0021] The following will describe in detail a quick positioning tooling for sofa frame welding provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also implement them in other alternative ways; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0022] Such as Figure 1 , Figure 2 and Figure 3As shown in the figure, an embodiment of the present invention provides a quick positioning tooling for welding a sofa frame, including: a processing platform 1, and a clamping assembly 2 and a positioning assembly 3 installed on the processing platform 1; the clamping assembly 2 includes a slide rail 21 installed inside the processing platform 1, a toothed plate 22 is slidably connected to the inner wall of the slide rail 21, an auxiliary plate 23 is slidably connected to the inner wall of the toothed plate 22, a cylinder 24 is fixedly assembled on the outer wall of the processing platform 1, and a connecting block 25 is fixedly assembled at the end of the telescopic end of the cylinder 24. The connecting block 25 penetrates the processing platform 1, and the end of the connecting block 25 away from the cylinder 24 is fixedly connected to the side wall of the toothed plate 22. A transmission wheel 26 is rotatably connected to the inner wall of the processing platform 1. The transmission wheel 26 is a gear. A through hole 27 is opened at the top of the processing platform 1. A positioning frame 28 is fixedly assembled at the top of the toothed plate 22. The positioning frame 28 penetrates the through hole 27, and a clamping plate 29 is fixedly assembled at the top of the positioning frame 28. The number of the toothed plate 22, the auxiliary plate 23 and the clamping plate 29 is two groups, and the two groups of toothed plates 22 and the auxiliary plate 23 are symmetrically distributed on both sides of the transmission wheel 26. The positions of the two groups of toothed plates 22 and the auxiliary plate 23 are opposite. By limiting the number and position of the toothed plate 22, the auxiliary plate 23 and the clamping plate 29, it is beneficial to drive the two groups of toothed plates 22 and the auxiliary plate 23 to move towards each other under the action of the transmission wheel 26 and finally drive the two groups of clamping plates 29 to move towards each other until the metal parts of the sofa frame are clamped and fixed, so as to ensure the normal use of the device.

[0023] As Figure 1 , 3 -5 and Figure 8 As shown in the figure, the positioning assembly 3 includes an inner cavity 31 opened inside the clamping plate 29. A motor 32 is fixedly assembled on the outer wall of the clamping plate 29. The end of the output shaft of the motor 32 is fixedly connected to a reduction box 33. The end of the output shaft of the reduction box 33 is fixedly assembled with a screw rod 34. A moving ring 35 is threadedly connected to the outer wall of the screw rod 34. The number of the moving rings 35 is two groups, and the two groups of moving rings 35 are symmetrically distributed on both sides of the screw rod 34. A clamping block 36 is fixedly assembled on the side of the moving ring 35 away from the screw rod 34.

[0024] In the above structure, the motor 32 and the reduction box 33 are used to drive the screw rod 34 to rotate. The rotation of the screw rod 34 drives the two groups of moving rings 35 and the clamping blocks 36 to move towards each other. Through the opposite movement of the clamping blocks 36, the metal part materials of the sofa frame can be clamped and fixed, which is beneficial to improving the multi-angle clamping effect of the sofa frame and the convenience of clamping the metal parts of the sofa frame.

[0025] As Figure 4 , Figure 8 and Figure 9As shown, a groove 361 is formed on the outer wall of the clamping block 36. A positioning tube 362 is fixedly assembled on the inner wall of the groove 361. A spring 363 that provides elastic force is fixedly assembled on the inner wall of the positioning tube 362. A positioning pin 364 is fixedly assembled at one end of the spring 363 away from the positioning tube 362.

[0026] In the above structure, by providing the groove 361, the positioning tube 362, the spring 363 and the positioning pin 364 on the outer wall of the clamping block 36, when the clamping block 36 clamps the metal part, the top of the positioning pin 364 is squeezed by the metal part, and the positioning pin 364 moves deeper into the positioning tube 362. When the clamping of the metal part is completed, the spring 363 pushes the positioning pin 364 out to a position away from the positioning tube 362 to reset the positioning pin 364, thereby improving the firmness of clamping the metal part, and cooperating with the clamping assembly 2 and the positioning assembly 3 to improve the stability of clamping the metal part and ensure the welding accuracy of the sofa frame.

[0027] As Figure 9 shown, a sliding groove 365 is formed on the outer wall of the positioning tube 362. A slider 366 is slidably connected to the inner wall of the sliding groove 365. One side of the slider 366 away from the sliding groove 365 is fixedly connected to the positioning pin 364.

[0028] In the above structure, by providing the sliding groove 365 and the slider 366, when the positioning pin 364 slides in the positioning tube 362, the sliders 366 on both sides of the positioning pin 364 slide on the inner wall of the sliding groove 365, thereby improving the stability of the movement of the positioning pin 364 and preventing the positioning pin 364 from getting stuck when clamping the metal part.

[0029] As Figure 3 and Figure 6 shown, limiting grooves 211 are formed on both sides of the slide rail 21. A fixing block 221 is fixedly assembled at the bottom of the toothed plate 22. A pulley 222 is rotatably connected to one side of the fixing block 221 away from the toothed plate 22. The outer wall of the pulley 222 is in rolling connection with the limiting groove 211.

[0030] In the above structure, by providing the limiting groove 211 on the slide rail 21, and providing the fixing block 221 and the pulley 222 at the bottom of the toothed plate 22, it is beneficial for the toothed plate 22 to slide in the limiting groove 211 during the movement process. This can not only improve the smoothness of the movement of the toothed plate 22, but also provide a certain support for the toothed plate 22, and ultimately improve the stability of fixing the sofa frame.

[0031] As Figure 3 and Figure 7, a connecting groove 212 is formed at the top of the slide rail 21. A roller 231 is rotatably connected to the bottom of the auxiliary plate 23. The outer wall of the roller 231 is in rolling connection with the connecting groove 212. An adaptation groove 223 is formed in the inner wall of the toothed plate 22. The inner diameter of the adaptation groove 223 is adapted to the width of the roller 231.

[0032] In the above structure, by providing the connecting groove 212 on the slide rail 21 and the roller 231 at the bottom of the auxiliary plate 23, it is beneficial to support the auxiliary plate 23 during the lateral movement of the auxiliary plate 23, improving the stability of the clamping assembly 2 during use. At the same time, by providing the adaptation groove 223, when the auxiliary plate 23 moves into the toothed plate 22, the roller 231 is embedded into the inner wall of the adaptation groove 223, preventing the toothed plate 22 from obstructing the roller 231. Such as Figure 3 , Figure 4 And Figure 5 As shown, a brush 271 is fixedly assembled on the inner wall of the through hole 27. The number of the brushes 271 is several, and several brushes 271 are evenly distributed on both sides of the inner wall of the through hole 27.

[0033] In the above structure, by providing several brushes 271 in the through hole 27, it is beneficial to block the waste generated by welding through the brushes 271 when welding the sofa frame, preventing the waste from falling into the interior of the processing platform 1 through the through hole 27. These wastes will not only cause difficulties in cleaning but also affect the normal operation of the toothed plate 22, the auxiliary plate 23 and the transmission wheel 26.

[0034] Such as Figure 1 , Figure 4 And Figure 8 As shown, the shapes of the positioning frame 28 and the clamping block 36 are both "L" - shaped, and the width of the clamping block 36 is adapted to the height of the positioning frame 28.

[0035] In the above structure, by limiting the positioning frame 28 and the clamping block 36, it is beneficial to first place the metal parts in the sofa frame on the positioning frame 28 and then cooperate with the clamping block 36 to fix the metal parts, which is beneficial to improving the convenience of clamping the sofa frame and further improving the use efficiency of the positioning tooling.

[0036] Such as Figure 5 , Figure 8 And Figure 9 , the number of the positioning tubes 362, the springs 363 and the positioning pins 364 is several groups, and several groups of the positioning tubes 362, the springs 363 and the positioning pins 364 are evenly distributed on the inner wall of the groove 361.

[0037] In the above structure, by limiting the quantity and positions of the positioning tube 362, spring 363 and positioning pin 364, it is beneficial to cooperate with the clamping block 36 to improve the firmness of clamping the sofa frame. At the same time, by arranging multiple groups of the positioning tube 362, spring 363 and positioning pin 364, the special-shaped sofa frame can be effectively clamped and fixed, improving the application range and welding precision of the device.

[0038] In the technical solution provided by the present invention, during operation, first place the metal parts of the sofa frame on the top of the positioning frame 28, and then drive the screw 34 to rotate through the motor 32 and the reduction box 33. The rotation of the screw 34 drives the two moving rings 35 to move towards each other, and the two moving rings 35 drive the two clamping blocks 36 to move towards each other during the movement towards each other, thereby clamping the metal parts. When the clamping block 36 clamps the metal parts, the metal parts squeeze the positioning pin 364, and the positioning pin 364 moves towards the inside of the positioning tube 362. The positioning pins 364 that do not contact the metal parts can limit the metal parts to a certain extent, which can not only improve the clamping effect on the metal parts, but also position the special-shaped metal parts. After welding the metal parts, when it is necessary to combine the two metal parts to form a sofa frame, the cylinder 24 is used to drive the toothed plate 22 to move horizontally. During the movement of the toothed plate 22, the driving wheel 26 is driven to rotate. The rotation of the driving wheel 26 drives the toothed plate 22 on the opposite side to move. The moving directions of the two toothed plates 22 are opposite. The two toothed plates 22 drive the two positioning frames 28 to move towards each other during the movement towards each other. During the movement of the positioning frame 28, the auxiliary plate 23 is also driven to move. The auxiliary plate 23 supports and assists the movement of the positioning frame 28. Finally, according to the actual size requirements of the sofa frame, the two positioning frames 28 can be moved and then combined and welded to form a sofa frame.

[0039] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A quick positioning tooling for welding of a sofa frame, characterized in that Including: A processing platform (1), and a clamping assembly (2) and a positioning assembly (3) installed on the processing platform (1); The clamping assembly (2) includes a slide rail (21) installed inside the processing platform (1). A toothed plate (22) is slidably connected to the inner wall of the slide rail (21). An auxiliary plate (23) is slidably connected to the inner wall of the toothed plate (22). A cylinder (24) is fixedly assembled on the outer wall of the processing platform (1). The end of the telescopic end of the cylinder (24) is fixedly assembled with a connecting block (25). The connecting block (25) penetrates the processing platform (1), and the end of the connecting block (25) away from the cylinder (24) is fixedly connected to the side wall of the toothed plate (22). A transmission wheel (26) is rotatably connected to the inner wall of the processing platform (1). A through hole (27) is opened at the top of the processing platform (1). A positioning frame (28) is fixedly assembled on the top of the toothed plate (22). The positioning frame (28) penetrates the through hole (27), and a clamping plate (29) is fixedly assembled on the top of the positioning frame (28).

2. The quick positioning tooling for welding the sofa frame according to claim 1, characterized in that, The positioning assembly (3) includes a cavity (31) opened inside the clamping plate (29). A motor (32) is fixedly assembled on the outer wall of the clamping plate (29). The end of the output shaft of the motor (32) is fixedly connected to a reduction gearbox (33). The end of the output shaft of the reduction gearbox (33) is fixedly assembled with a screw rod (34). A moving ring (35) is threadedly connected to the outer wall of the screw rod (34). A clamping block (36) is fixedly assembled on the side of the moving ring (35) away from the screw rod (34).

3. The quick positioning tooling for welding the sofa frame according to claim 2, characterized in that, A groove (361) is opened on the outer wall of the clamping block (36). A positioning tube (362) is fixedly assembled on the inner wall of the groove (361). A spring (363) is fixedly assembled on the inner wall of the positioning tube (362). The end of the spring (363) away from the positioning tube (362) is fixedly assembled with a positioning pin (364).

4. The rapid positioning tooling for welding of the sofa frame according to claim 3, characterized in that, A sliding groove (365) is opened on the outer wall of the positioning tube (362). A slider (366) is slidably connected to the inner wall of the sliding groove (365). The side of the slider (366) away from the sliding groove (365) is fixedly connected to the positioning pin (364).

5. The quick positioning tooling for welding the sofa frame according to claim 1, characterized in that, Limiting grooves (211) are opened on both sides of the slide rail (21). A fixing block (221) is fixedly assembled on the bottom of the toothed plate (22). A pulley (222) is rotatably connected to the side of the fixing block (221) away from the toothed plate (22). The outer wall of the pulley (222) is in rolling connection with the limiting groove (211).

6. The quick positioning tooling for welding the sofa frame according to claim 1, characterized in that, A connecting groove (212) is opened at the top of the slide rail (21). A roller (231) is rotatably connected to the bottom of the auxiliary plate (23). The outer wall of the roller (231) is in rolling connection with the connecting groove (212). An adapting groove (223) is opened on the inner wall of the toothed plate (22).

7. The quick positioning tooling for welding the sofa frame according to claim 1, characterized in that, A brush (271) is fixedly assembled on the inner wall of the through hole (27). The number of the brushes (271) is several, and several brushes (271) are evenly distributed on both sides of the inner wall of the through hole (27).

8. The quick positioning tooling for welding the sofa frame according to claim 1, characterized in that The number of the toothed plates (22), auxiliary plates (23) and clamping plates (29) is two groups, and the two groups of toothed plates (22) and auxiliary plates (23) are symmetrically distributed on both sides of the transmission wheel (26), and the positions of the two groups of toothed plates (22) and auxiliary plates (23) are opposite.

9. The quick positioning tooling for welding the sofa frame according to claim 2, wherein, The shapes of the positioning frames (28) and the clamping blocks (36) are both "L" type, and the width of the clamping blocks (36) is adapted to the height of the positioning frames (28).

10. The quick positioning tooling for welding the sofa frame according to claim 4, characterized in that, The number of the positioning tubes (362), springs (363) and positioning pins (364) is several groups, and the several groups of positioning tubes (362), springs (363) and positioning pins (364) are evenly distributed on the inner wall of the groove (361).

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