Quick welding tool for four-leg chair frame

Abstract

The utility model discloses a quick welding tool for a four-leg chair frame. The quick welding tool comprises a tool base, a chair frame limiting assembly and a plurality of chair leg limiting assemblies, wherein the chair frame limiting assembly and the chair leg limiting assemblies are installed on the tool base. The chair frame limiting assembly comprises a supporting bracket and a chair frame clamping piece. And the seat frame clamping piece is arranged on the supporting bracket and is used for clamping a frame body part in the seat framework. By arranging the chair frame limiting assembly and the chair leg limiting assembly, the whole seat framework is limited and clamped, and the welding accuracy of all parts of the seat framework is ensured. Meanwhile, a limiting support in the chair leg limiting assembly is divided into a guide part and a limiting part, so that when the chair legs in the chair framework are limited, the insertion direction of the chair legs can be guided through the guide part, the positions of the chair legs are rapidly limited, the machining efficiency is improved, the positions of the chair legs are more accurate during machining, and the machining efficiency is improved. And finally, the chair leg welding effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of seat processing and manufacturing technology, specifically relating to a rapid welding fixture for a four-legged chair frame. Background Technology

[0002] Chairs are a common household item, widely used in homes, schools, offices, bus shelters, and other public places. In current technology, to ensure chair strength, chair frames are generally constructed using welded metal frames. During the assembly process, to ensure the stability of the connections between the metal frames, they need to be welded together using welding equipment.

[0003] Existing home seating typically consists of a seat frame and a seat cushion covered with textile fabric and filled with internal padding. For example, Figure 5 As shown, the seat frame 10 mainly consists of a leg section 10-1 and a frame section 10-2 that connects the legs. Due to the complex shape of the seat frame 10, the connection between the leg section 10-1 and the frame section 10-2 requires precise fitting. Therefore, accuracy and efficiency must be ensured during the welding process.

[0004] Traditional welding processes are typically done manually, with each metal frame component aligned and fixed by hand before welding. However, this manual operation not only makes the chair frame assembly process complex, time-consuming, and labor-intensive, but also involves subjective judgment when aligning the joints of the metal frame components, leading to inaccurate alignment and a high error rate. This directly affects the efficiency of subsequent backrest and seat installation processes and the overall quality of the finished chair. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a rapid welding fixture for four-legged chair frames, which solves the technical problems of low welding efficiency and low finished product quality of existing seat frames.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0007] A quick welding fixture for a four-legged chair frame includes a fixture base and a chair frame limiting assembly and multiple sets of chair leg limiting assemblies mounted on the fixture base.

[0008] The chair frame limiting assembly includes a support bracket and a chair frame clamping member. The chair frame clamping member is disposed on the support bracket and is used to clamp the frame portion of the seat frame.

[0009] The chair leg limiting assembly includes a limiting bracket and a chair leg clamping component. The limiting bracket is divided into a guide portion and a limiting portion. A groove is formed on the guide portion. A first limiting groove is formed on the limiting portion. The chair leg clamping component is disposed on one side of the limiting bracket for further clamping and fixing the chair leg.

[0010] Furthermore, the groove on the guide portion is semi-circular in shape. The axis of the groove coincides with the axis of the first limiting groove.

[0011] Furthermore, the chair frame limiting assembly also includes a frame limiting seat. The frame limiting seat is disposed on the top of the support bracket. The frame limiting seat has a second limiting groove that mates with the frame portion of the seat frame. The chair frame clamping member is installed on one side of the second limiting groove.

[0012] Furthermore, there are two chair frame clamps. The two chair frame clamps are symmetrically arranged on the frame limiting seat.

[0013] Furthermore, multiple snap-fit ​​components are provided on both sides of the frame limiting seat. Each snap-fit ​​component has a snap-fit ​​groove.

[0014] Furthermore, both the chair frame clamp and the chair leg clamp are equipped with rotary telescopic cylinders.

[0015] Furthermore, there are four sets of chair leg limiting components. The bottom of the support bracket is provided with four uprights. The four sets of chair leg limiting components are respectively installed on the four uprights.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention achieves overall positioning and clamping of the seat frame by setting up a chair frame limiting component and a chair leg limiting component, ensuring the accuracy of welding between different parts of the seat frame. Simultaneously, by dividing the limiting bracket in the chair leg limiting component into a guide part and a limiting part, the guide part can guide the insertion direction of the chair leg when limiting it in the seat frame, achieving rapid positioning of the chair leg. This improves processing efficiency and makes the position of the chair leg more accurate during processing, ultimately improving the welding effect of the chair leg. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the chair leg limiting component in this utility model. Figure 1 (Enlarged view of part A in the middle)

[0020] Figure 3 This is a schematic diagram of the structure of the chair frame limiting component in this utility model. Figure 1(Enlarged view of part B in the middle section)

[0021] Figure 4 This is a schematic diagram showing the relative position of the chair frame clamping component on the frame limiting seat in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of a seat frame in the prior art.

[0023] Reference numerals in the attached drawings: 1. Chair frame limiting assembly; 2. Chair leg limiting assembly; 3. Support bracket; 4. Frame limiting seat; 5. Chair frame clamping component; 6. Limiting bracket; 6-1. Guide part; 6-2. Limiting part; 7. Chair leg clamping component; 8. Second limiting groove; 9. Snap-fit ​​component; 10. Seat frame; 10-1. Chair leg part; 10-2. Frame part. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, a quick welding fixture for a four-legged chair frame includes a fixture base, a chair frame limiting assembly 1, and four sets of chair leg limiting assemblies 2 mounted on the fixture base. The chair frame limiting assembly 1 includes a support bracket 3, a frame limiting seat 4, and a chair frame clamping component 5. The support bracket 3 has four uprights at its bottom. Each chair leg limiting component 2 is mounted on one of the uprights and is used to clamp and limit the chair leg portion of the chair frame. The frame limiting seat 4 is fixed to the top of the support bracket 3 and, in conjunction with the chair frame clamping component 5, clamps and limits the frame portion of the chair frame.

[0027] like Figure 1 and 2As shown, the chair leg limiting assembly 2 includes a limiting bracket 6 and a chair leg clamping member 7. The limiting bracket 6 is divided into a guide portion 6-1 and a limiting portion 6-2. The guide portion 6-1 has a semi-circular groove. The limiting portion 6-2 has a through-hole first limiting groove. The axis of the groove coincides with the axis of the first limiting groove, allowing the chair leg to be initially limited by the groove on the guide portion 6-1 when the operator is limiting the chair leg portion of the seat frame. Subsequently, the chair leg is pressed down, causing it to extend into the first limiting groove. The first limiting groove locks the position of the chair leg. The chair leg clamping member 7 is used to further clamp and fix the chair leg.

[0028] In this embodiment, the chair leg clamp 7 is a rotary telescopic cylinder. Initially, the clamp of the chair leg clamp 7 is located on one side of the limiting bracket 6, allowing the guide portion 6-1 of the limiting bracket 6 to be properly positioned. When the worker inserts the chair leg, the clamp of the chair leg clamp 7 rotates to a position perpendicular to the guide portion 6-1 of the limiting bracket 6 and moves towards the limiting bracket 6, thus clamping and fixing the portion of the chair leg located on the guide portion 6-1, ensuring the stability of the chair leg during welding.

[0029] In some embodiments, the rotary telescopic cylinders in each set of chair leg limiting components 2 use the same cylinder switching valve, so that each rotary telescopic cylinder can simultaneously complete the limiting clamping of each chair leg, thereby improving processing efficiency.

[0030] like Figure 3 and 4 As shown, the frame limiting seat 4 has a second limiting groove 8 that mates with the frame part of the seat frame. The frame part is embedded in the second limiting groove 8, forming a position limit and ensuring the stability of the frame part and the chair leg part during welding.

[0031] Furthermore, multiple snap-fit ​​pieces 9 are provided on both sides of the frame limiting seat 4. Each snap-fit ​​piece 9 has a slot. During processing, the connecting parts used to connect two adjacent chair legs snap into the slots.

[0032] like Figure 4 As shown, there are two chair frame clamping members 5, which are symmetrically arranged on the frame limiting seat 4 to further clamp the frame portion embedded in the second limiting groove 8. In this embodiment, the chair frame clamping member 5 is a rotary telescopic cylinder.

[0033] In the initial state, the clamp of the chair frame clamp 5 is located on one side of the second limiting groove 8, allowing the opening of the second limiting groove 8 to be cleared, so that the frame of the seat can be smoothly inserted into the second limiting groove 8. After the frame is inserted into the second limiting groove 8, the clamp of the chair frame clamp 5 rotates to above the opening of the second limiting groove 8 and presses down to further limit and clamp the frame.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick welding fixture for a four-legged chair frame, comprising a fixture base and a chair frame limiting assembly (1) and multiple sets of chair leg limiting assemblies (2) mounted on the fixture base, characterized in that: The chair frame limiting assembly (1) includes a support bracket (3) and a chair frame clamping member (5); the chair frame clamping member (5) is disposed on the support bracket (3) and is used to clamp the frame part in the seat frame; The chair leg limiting assembly (2) includes a limiting bracket (6) and a chair leg clamping member (7); the limiting bracket (6) is divided into a guide part (6-1) and a limiting part (6-2); a groove is provided on the guide part (6-1); a first limiting groove is provided on the limiting part (6-2); the chair leg clamping member (7) is disposed on one side of the limiting bracket (6) for further clamping and fixing the chair leg.

2. The quick welding fixture for a four-legged chair frame according to claim 1, characterized in that: The groove on the guide part (6-1) is semi-circular; the axis of the groove coincides with the axis of the first limiting groove.

3. The quick welding fixture for a four-legged chair frame according to claim 1, characterized in that: The chair frame limiting assembly (1) also includes a frame limiting seat (4); the frame limiting seat (4) is located on the top of the support bracket (3); the frame limiting seat (4) has a second limiting groove (8) that cooperates with the frame part of the seat frame; the chair frame clamping member (5) is installed on one side of the second limiting groove (8).

4. A quick welding fixture for a four-legged chair frame according to claim 3, characterized in that: There are two chair frame clamps (5); the two chair frame clamps (5) are symmetrically arranged on the frame limiting seat (4).

5. A quick welding fixture for a four-legged chair frame according to claim 3, characterized in that: Multiple snap-fit ​​pieces (9) are provided on both sides of the frame limiting seat (4); the snap-fit ​​pieces (9) are provided with snap-fit ​​slots.

6. A quick welding fixture for a four-legged chair frame according to claim 1, characterized in that: Both the chair frame clamp (5) and the chair leg clamp (7) are equipped with rotary telescopic cylinders.

7. A quick welding fixture for a four-legged chair frame according to claim 1, characterized in that: There are four sets of chair leg limiting components (2); the bottom of the support bracket (3) is provided with four uprights; the four sets of chair leg limiting components (2) are respectively set on the four uprights.

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