Automatic welding system for frame

Abstract

The utility model belongs to the technical field of automatic processing, and provides an automatic welding system of a frame, which comprises a welding unit and a fixing unit, the fixing unit comprises a workbench, and the frame comprises a frame body and a connecting piece used for installing table legs; the workbench is provided with at least three positioning bosses, and the number of the connecting pieces corresponds to the number of the bosses. The boss is used for making contact with the inner wall of the frame body so as to limit the frame body to move on the horizontal plane. The workbench is provided with a first pressing unit used for pressing the frame. The boss is provided with a positioning column, and the positioning column and the inner wall of the frame body form a fixing part used for fixing a connecting piece. According to the welding fixture, the boss is used for limiting the frame body, and the second pressing unit is matched with the fixing part to position and press the connecting piece, so that the connecting piece is prevented from shifting in the welding process, and the welding efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automated processing technology, specifically an automated welding system for frames. Background Technology

[0002] Furniture is an indispensable part of modern home life, mainly including various fixed or movable appliances used in daily life, such as sofas, dining tables, beds, and desks. It not only provides basic functional needs such as rest, dining, and storage, but also greatly influences the aesthetics and atmosphere of the living environment.

[0003] CN201922459408.6 discloses a frame welding fixture, including a base plate, corner fasteners, a pipe fixing assembly, and a central positioning component. The corner fasteners are fixedly connected to the base plate to form a rectangular fixing cavity. The central positioning component is fixedly connected to the middle of the rectangular fixing cavity. The pipe fixing assembly is fixedly connected between adjacent corner fasteners.

[0004] The above technical solution mainly uses corner fasteners to position and place the frame tubes, then uses tube fixing components to fix the tubes, and then uses central positioning components to position the central tubes, thereby improving the positioning accuracy of frame welding and thus improving welding accuracy. However, when welding the frame, workers will weld the connectors onto the frame for subsequent furniture assembly. However, since there is no mechanism to position and fix the connectors, the connectors are prone to displacement during the welding process, requiring rework and affecting efficiency. Utility Model Content

[0005] The purpose of this invention is to solve the above problems and provide an automated welding system for frames. This system uses a boss to limit the frame first, and then uses a second clamping unit to cooperate with the fixing part to position and clamp the connectors, thereby avoiding displacement of the connectors during the welding process and improving welding efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automated welding system for a frame includes a welding unit and a fixing unit. The fixing unit includes a workbench, and the frame includes a body and connectors for mounting table legs. The workbench is provided with at least three positioning bosses, and the number of connectors corresponds to the number of bosses. The bosses are used to contact the inner wall of the body to restrict the movement of the body on a horizontal plane. The workbench is provided with a first clamping unit for clamping the body.

[0008] The boss is provided with a positioning post, which forms a fixing part with the inner wall of the frame for fixing the connector; when the connector is located in the fixing part, the connector contacts the top of the frame; the worktable is also provided with a second pressing unit for pressing the connector onto the frame.

[0009] In the aforementioned automated welding system for a frame, the connector includes a mounting plate and a positioning plate disposed at the bottom of the mounting plate. When the positioning plate is located within the fixing part, the mounting plate contacts the top of the frame.

[0010] In the aforementioned automated welding system for a frame, the frame is a rectangular structure, and the bosses correspond one-to-one with the inner corners of the frame and are attached to the inner surfaces of the inner corners.

[0011] In the aforementioned automated welding system for a frame, the positioning plate has a right-angled triangular structure; when the positioning plate is located within the fixed part, the right-angled surface of the positioning plate is in contact with the inner side of the inner corner of the frame, and the inclined surface of the positioning plate is in contact with the side of the positioning post.

[0012] In the aforementioned automated welding system for a frame, the frame further includes a first reinforcing rib connected within the frame body, and the worktable is provided with a first clamping assembly for pressing the first reinforcing rib onto the worktable.

[0013] In the aforementioned automated welding system for a frame, the frame further includes a second reinforcing rib connected within the frame, with the second reinforcing rib resting on the first reinforcing rib. The workbench is provided with a second clamping assembly for pressing the second reinforcing rib against the first reinforcing rib.

[0014] In the above-mentioned automated welding system for a frame, the first clamping assembly includes two first threaded columns spaced apart on the worktable along the length of the first reinforcing rib, and two first connecting rods threadedly connected to the first threaded columns. The first reinforcing rib can be clamped and fixed by rotating the first connecting rods.

[0015] The second clamping assembly includes two second threaded posts spaced apart on the worktable along the length of the second reinforcing rib, and two second connecting rods threadedly connected to the second threaded posts. The second reinforcing rib can be clamped and fixed by rotating the second connecting rods.

[0016] In the aforementioned automated welding system for a frame, the frame is composed of two horizontal bars and two vertical bars connected together; the first clamping unit includes a first fixing component corresponding to each horizontal bar and a second fixing component corresponding to each vertical bar, which are set on the worktable; the first fixing component is used to clamp the horizontal bars, and the second fixing component is used to clamp the vertical bars.

[0017] In the aforementioned automated welding system for a frame, the first fixing component includes two third threaded posts spaced apart on the worktable along the length of the crossbar, and two third connecting rods threadedly connected to the third threaded posts; the crossbar can be pressed down by rotating the third connecting rods.

[0018] The second fixing component includes two fourth threaded posts spaced apart on the worktable along the length of the vertical rod, and two fourth connecting rods threadedly connected to the fourth threaded posts; the vertical rod can be pressed down by rotating the fourth connecting rods.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention uses a boss to limit the frame first, and then uses a second clamping unit to cooperate with the fixing part to position and clamp the connector, thus avoiding displacement of the connector during the welding process and improving welding efficiency. Attached Figure Description

[0021] Figure 1 This is a perspective view of an automated welding system with a frame, as described in Embodiment 1.

[0022] Figure 2 This is a top view of the fixed unit of an automated welding system with a frame, as described in Embodiment 1.

[0023] Figure 3 This is a perspective view of the fixed unit of an automated welding system with a frame, as described in Embodiment 1.

[0024] Figure 4 This is a perspective view of the connector of an automated welding system for a frame according to Embodiment 1;

[0025] The figure labels for each figure are as follows:

[0026] 1. Workbench; 2. Frame; 21. Frame body; 211. Horizontal bar; 212. Vertical bar; 213. First reinforcing rib; 214. Second reinforcing rib; 22. Connector; 221. Mounting plate; 222. Positioning plate; 3. Boss; 31. Positioning post; 311. Fixing part; 4. First clamping unit; 41. First fixing component; 411. Third threaded post; 412. Third connecting rod; 42. Second fixing component; 421. Fourth threaded post; 422. Fourth connecting rod; 5. Second clamping unit; 6. First clamping component; 61. First threaded post; 62. First connecting rod; 7. Second clamping component; 71. Second threaded post; 72. Second connecting rod; A. Fixing unit; B. Welding unit. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] refer to Figures 1-4 An automated welding system for a frame includes a welding unit B and a fixing unit A. The fixing unit A includes a workbench 1, and the frame 2 includes a frame body 21 and connectors 22 for mounting table legs. The workbench 1 is provided with at least three positioning bosses 3, and the number of connectors 22 corresponds to the number of bosses 3. The bosses 3 are used to contact the inner wall of the frame body 21 to restrict the movement of the frame body 21 on a horizontal plane. The workbench 1 is provided with a first clamping unit 4 for clamping the frame body 21.

[0030] The boss 3 is provided with a positioning post 31, which forms a fixing part 311 for fixing the connector 22 by forming with the inner wall of the frame 21; when the connector 22 is located in the fixing part 311, the connector 22 contacts the top of the frame 21; the workbench 1 is also provided with a second pressing unit 5 for pressing the connector 22 onto the frame 21.

[0031] It should be noted here that welding unit B is a welding robot.

[0032] In this design, the worker first places the frame 21 on the workbench 1 and uses the boss 3 to restrict the movement of the frame 21 on the horizontal plane. Then, the first clamping unit 4 clamps and fixes the frame 21. Next, the connector 22 is fixed by the fixing part 311 formed by the positioning post 31 and the inner wall of the frame 21. Then, the second clamping unit 5 presses the connector 22 onto the frame 21. After the connector 22 is fixed, the connector is welded by the welding unit B. After the connector 22 is welded, the first clamping unit 4 and the second clamping unit 5 are released and the frame 21 is taken out. In this way, the displacement of the connector 22 during the welding process is avoided, and the welding efficiency is improved.

[0033] The second clamping unit 5 can be a quick clamp.

[0034] In this embodiment, the connector 22 includes a mounting plate 221 and a positioning plate 222 disposed at the bottom of the mounting plate 221. When the positioning plate 222 is located inside the fixing part 311, the mounting plate 221 contacts the top of the frame 21.

[0035] The frame 21 has a rectangular structure, and the protrusions 3 correspond one-to-one with the inner corners of the frame 21 and are attached to the inner surfaces of the inner corners.

[0036] The positioning plate 222 has a right-angled triangular structure; when the positioning plate 222 is located inside the fixing part 311, the right-angled surface of the positioning plate 222 is in contact with the inner side of the inner corner of the frame 21, and the inclined surface of the positioning plate 222 is in contact with the side of the positioning post 31.

[0037] Specifically, the inner side of the boss 3 is attached to the inner corner of the frame 21, which can better limit and position the frame 21.

[0038] Mounting plate 221 is used to mount table legs. When positioning mounting plate 221 on top of frame 21, positioning plate 222 with right-angled triangle structure is used for positioning. The right-angled surface of positioning plate 222 is attached to the inner side of the inner corner of frame 21, and the side of positioning post 31 is in contact with the inclined surface of positioning plate 222. In this way, when positioning plate 222 is located in fixing part 311, mounting plate 221 can be positioned on frame 21. Then, mounting plate 221 is pressed by second pressing unit 5.

[0039] Preferably, the frame 2 further includes a first reinforcing rib 213 connected within the frame 21, and the workbench 1 is provided with a first pressing assembly 6 for pressing the first reinforcing rib 213 onto the workbench 1;

[0040] The frame 21 also includes a second reinforcing rib 214 connected inside the frame 21, and the second reinforcing rib 214 rests on the first reinforcing rib 213. The workbench 1 is provided with a second pressing component 7 for pressing the second reinforcing rib 214 onto the first reinforcing rib 213.

[0041] Furthermore, the first reinforcing rib 213 and the second reinforcing rib 214 are used to reinforce the structure of the frame 21. The two ends of the first reinforcing rib 213 are in contact with the frame 21 and pressed by the first pressing component 6. Then, the second reinforcing rib 214 is placed on the first reinforcing rib and pressed by the second pressing component 7 onto the first reinforcing rib 213, thereby completing the fixation of the first reinforcing rib 213 and the second reinforcing rib 214. After the fixation is completed, welding can be performed.

[0042] Preferably, the first clamping assembly 6 includes two first threaded posts 61 arranged at intervals along the length direction of the first reinforcing rib 213 on the workbench 1, and two first connecting rods 62 threadedly connected to the first threaded posts 61, so that the first reinforcing rib 213 can be clamped and fixed by rotating the first connecting rods 62;

[0043] The second clamping assembly 7 includes two second threaded posts 71 arranged at intervals along the length of the second reinforcing rib 214 on the workbench 1, and two second connecting rods 72 threadedly connected to the second threaded posts 71. The second reinforcing rib 214 can be clamped and fixed by rotating the second connecting rods 72.

[0044] Specifically, when fixing the first reinforcing rib 213, the first connecting rod 62 on the first threaded post 61 is rotated to press the first reinforcing rib 213 tightly. When fixing the second reinforcing rib 214, the second connecting rod 72 on the second threaded post 71 is rotated to press the second reinforcing rib 214 tightly. After the first reinforcing rib 213 and the second reinforcing rib 214 are welded, the first connecting rod 62 and the second connecting rod 72 are rotated in opposite directions to loosen the fixation of the first reinforcing rib 213 and the second reinforcing rib 214.

[0045] More preferably, the frame 21 is composed of two horizontal bars 211 and two vertical bars 212 connected together; the first pressing unit 4 includes a first fixing component 41 corresponding to the horizontal bars 211 and a second fixing component 42 corresponding to the vertical bars 212, which are disposed on the workbench 1; the first fixing component 41 is used to press the horizontal bars 211, and the second fixing component 42 is used to press the vertical bars 212.

[0046] Furthermore, when fixing the frame 21, the first clamping component 6 and the second clamping component 7 are used to clamp and fix the horizontal bar 211 and the vertical bar 212 to prevent them from shifting during the welding process.

[0047] In this embodiment, the first fixing component 41 includes two third threaded posts 411 spaced apart on the workbench 1 along the length of the crossbar 211, and two third connecting rods 412 threaded to the third threaded posts 411; the crossbar 211 can be pressed by rotating the third connecting rods 412.

[0048] The second fixing component 42 includes two fourth threaded posts 421 spaced apart along the length of the vertical rod 212 on the workbench 1, and two fourth connecting rods 422 threaded to the fourth threaded posts 421; the vertical rod 212 can be pressed by rotating the fourth connecting rods 422.

[0049] Specifically, when fixing the horizontal bar 211, the third connecting rod 412 on the third threaded post 411 is rotated to press and fix the horizontal bar 211. When fixing the vertical bar 212, the fourth connecting rod 422 on the fourth threaded post 421 is rotated to press and fix the vertical bar 212.

[0050] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements or modifications can be made without departing from the principle of the present utility model, and these improvements or modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automated welding system of a frame, comprising a welding unit and a fixing unit, characterized in that, The fixing unit comprises a workbench, and the frame comprises a frame body and connecting pieces for mounting table legs; the workbench is provided with at least three positioning bosses, and the connecting pieces correspond to the number of bosses; the bosses are used for contacting the inner wall of the frame body to limit the movement of the frame body in the horizontal plane; the workbench is provided with a first pressing unit for pressing the frame body; The bosses are provided with positioning columns, and the positioning columns form fixing portions for fixing the connecting pieces by contacting the inner wall of the frame body; when the connecting pieces are located in the fixing portions, the connecting pieces contact the top of the frame body; the workbench is further provided with a second pressing unit for pressing the connecting pieces on the frame body.

2. An automated welding system of frames as claimed in claim 1, wherein, The connecting pieces comprise a mounting plate body and a positioning plate body arranged at the bottom of the mounting plate body; when the positioning plate body is located in the fixing portion, the mounting plate body contacts the top of the frame body.

3. An automated welding system of frames as claimed in claim 2, wherein, The frame body is of a rectangular structure, and the bosses correspond to the inner corners of the frame body one by one and are attached to the inner side surfaces of the inner corners.

4. The automated welding system of claim 3, wherein, The positioning plate body is of a right-angled triangular structure; when the positioning plate body is located in the fixing portion, the right-angled surface of the positioning plate body is attached to the inner side surface of the inner corner of the frame body, and the inclined surface of the positioning plate body contacts the side surface of the positioning column.

5. The automated welding system of claim 1, wherein, The frame further comprises a first reinforcing rib connected in the frame body, and the workbench is provided with a first pressing assembly for pressing the first reinforcing rib on the workbench.

6. An automated welding system of frames as claimed in claim 5, wherein, The frame body further comprises a second reinforcing rib connected in the frame body, and the second reinforcing rib is arranged on the first reinforcing rib; the workbench is provided with a second pressing assembly for pressing the second reinforcing rib on the first reinforcing rib.

7. An automated welding system of frames as claimed in claim 6, wherein, The first pressing assembly comprises two first threaded columns arranged on the workbench along the length direction of the first reinforcing rib, and two first connecting rods threadedly connected with the first threaded columns; the first reinforcing rib can be pressed and fixed by rotating the first connecting rods; The second pressing assembly comprises two second threaded columns arranged on the workbench along the length direction of the second reinforcing rib, and two second connecting rods threadedly connected with the second threaded columns; the second reinforcing rib can be pressed and fixed by rotating the second connecting rods.

8. The automated welding system of claim 1, wherein, The frame body is composed of two horizontal rods and two vertical rods; the first pressing unit comprises first fixing assemblies corresponding to the horizontal rods and second fixing assemblies corresponding to the vertical rods arranged on the workbench; the first fixing assemblies are used for pressing the horizontal rods, and the second fixing assemblies are used for pressing the vertical rods.

9. An automated welding system of frames as claimed in claim 8, wherein, The first fixing assembly comprises two third threaded columns arranged on the workbench along the length direction of the horizontal rod, and two third connecting rods threadedly connected with the third threaded columns; the horizontal rod can be pressed by rotating the third connecting rods; The second fixing assembly comprises two fourth threaded columns arranged on the workbench along the length direction of the vertical rod, and two fourth connecting rods threadedly connected with the fourth threaded columns; the vertical rod can be pressed by rotating the fourth connecting rods.

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