Auxiliary positioning tool for welding and processing office desks and chairs

Abstract

The utility model discloses an auxiliary positioning tool for office table and chair welding processing, and relates to the technical field of office table and chair welding processing, the auxiliary positioning tool comprises a supporting part, a clamping part and an adjusting part, the supporting part provides stable support, the clamping part fixes a table plate or a chair plate through an adjustable positioning mechanism, a clamping sliding rod, a connecting rod and other parts, and the adjusting part is used for adjusting the clamping sliding rod. And the adjusting part realizes flexible positioning of the table legs or the chair legs by virtue of an adjusting shaft, an adjusting sliding frame, an adjusting seat, an adjusting clamping disc and an adjusting screw rod. The production efficiency can be remarkably improved, the positioning mechanism and the adjusting part are convenient to operate, and the preparation and treatment time before and after welding can be greatly shortened; the equipment universality is greatly improved, and the welding requirements of table plates and chair plates of different sizes and table legs and chair legs of different specifications can be met; the positioning accuracy is effectively improved, it is ensured that the welding position is accurate, the welding quality of office tables and chairs is improved, and the quality problem is reduced.

Description

Technical Field

[0001] This utility model relates to the field of office desk and chair welding technology, specifically an auxiliary positioning fixture for office desk and chair welding. Background Technology

[0002] In the welding process of office desks and chairs, auxiliary positioning fixtures play a crucial role in ensuring welding accuracy and quality and improving production efficiency.

[0003] Utility model patent CN217618658U discloses a tooling fixture for auxiliary positioning in the welding of metal structural parts, including a base and a support plate. A support rod is fixed to the top of the base, and the top of the support rod is connected to a sleeve via a movable connecting device. A support plate is fixedly mounted on the top of the sleeve. A first clamping plate is connected to the right side of the support plate via a movable connecting device. In this tooling fixture design, the support rod provides support force for the first and second clamping plates on the support plate. Combined with the first spring, fixing rod, and fixing plate in the fixing assembly, it provides the necessary elastic force to the clamping plates, ensuring that the first and second clamping plates firmly position and fix the metal parts. Simultaneously, a movable component is provided at the bottom of the clamping plates, allowing adjustment of the distance between the first and second clamping plates to accommodate metal structural parts of different sizes. This design improves the versatility and applicability of the fixture in welding processes.

[0004] However, existing technology struggles to flexibly adapt to the positioning needs of tabletops and chairs of different sizes, often requiring frequent tooling changes or complex adjustments for different board specifications, which significantly reduces production efficiency. Furthermore, fixing table and chair legs is inconvenient and lacks precision, easily leading to structural instability and loose component connections in the welded tables and chairs. Additionally, existing tooling is typically only applicable to specific styles of office desks and chairs, lacking versatility and failing to meet diverse market demands. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides the following technical solution: An auxiliary positioning fixture for welding office desks and chairs, comprising a support part, the support part including a support base plate and a support frame; the support base plate and the support frame are fixedly disposed between support side plates, and further including a clamping part for fixing the tabletop and an adjusting part for flexibly positioning the table legs; the clamping part includes a clamping slide rod one and a clamping slide rod two, the clamping slide rod one and the clamping slide rod two are slidably disposed on the support frame, a clamping connecting rod two is rotatably disposed on the clamping slide rod one, and the other end of the clamping connecting rod two is rotatably disposed on the clamping connecting rod two. On rod one, a clamping link three is rotatably mounted at the other end of clamping link one, and the other end of clamping link three is rotatably mounted on clamping slide rod two; at least two adjustable positioning mechanisms are respectively provided on clamping slide rod one and clamping slide rod two, and the positioning mechanisms are used to position the table board; the adjustment part includes an adjustment shaft slidably mounted on the support side plate, an adjustment sliding frame slidably mounted on the adjustment shaft, an adjustment seat slidably mounted on the adjustment sliding frame, symmetrical adjustment clamping discs are arranged on the adjustment seat, and an adjustment screw is rotatably mounted on the adjustment clamping disc, and the adjustment screw and the adjustment seat are engaged by threads.

[0006] Furthermore, the positioning mechanism includes a clamping seat, which is slidably mounted on clamping slide rod one and clamping slide rod two. A clamping adjustment rod is slidably mounted on the clamping seat. The clamping adjustment rod cooperates with the insertion holes on clamping slide rod one and clamping slide rod two to adjust its position. A clamping return spring is provided between the clamping adjustment rod and the clamping seat. A clamping rotating ring is rotatably mounted on the clamping seat. A clamping plate one and a clamping plate two are fixedly mounted on the clamping rotating ring. A clamping roller one is rotatably mounted on clamping plate one, and a clamping roller two is rotatably mounted on clamping plate two. The clamping plate two is mounted on the clamping seat by a clamping spring.

[0007] Furthermore, the middle part of the adjustment seat has a hollow structure, and the diameter of the hollow structure is larger than the diameter of the table leg.

[0008] Furthermore, the adjusting clamping disc is slidably mounted on the adjusting seat via a guide post, and the adjusting clamping disc is provided with rubber protrusions for increasing friction.

[0009] Furthermore, both clamping roller one and clamping roller two are made of rubber material.

[0010] Furthermore, the insertion holes are arranged in a row along the axial direction of clamping slide rod one and clamping slide rod two.

[0011] Furthermore, the included angle between the clamping plate one and the clamping plate two is 90°.

[0012] The advantages of this utility model compared with the prior art are:

[0013] 1. Significantly Improved Production Efficiency: The positioning mechanism of this tooling is easily adjustable. Operators only need to pull the clamping adjustment rod and push the clamping seat to quickly adjust the position according to the size of the table or chair. After adjustment, the positioning mechanism automatically fixes itself, eliminating the need for frequent tooling changes. Simultaneously, the adjustment unit simplifies the position adjustment and fixing of table and chair legs, and allows for quick disassembly after welding. This greatly shortens preparation time before welding and post-weld processing time, significantly improving the welding efficiency of office desks and chairs.

[0014] 2. Significantly Enhances Equipment Versatility: This fixture can handle tabletops and chairs of different sizes, as well as table legs and chair legs of different specifications, with ease. For tabletops and chairs, the flexible adjustment of the positioning mechanism accommodates their size differences; for table legs and chair legs, the adjustable seat, adjusting clamping plate, and adjusting screw enable clamping and positioning of components of different diameters, meeting the welding needs of diverse office desk and chair styles. This effectively improves the equipment's versatility and reduces the costs incurred by companies due to tooling replacements.

[0015] 3. Effectively Improves Positioning Accuracy: The clamping unit, through the coordinated operation of the clamping motor, clamping linkage, and clamping slide, accurately positions the tabletop or chair panel in the designated location, ensuring a tight fit between the panel edges. The adjustment unit, controlled by the adjusting screw, controls the adjusting clamping plate to firmly clamp the table or chair legs. Operators can also precisely move the adjusting seat to accurately align the welding points between the table legs and the tabletop, thus ensuring the accuracy of the welding position. This effectively improves the welding quality of office desks and chairs, reducing quality problems such as structural instability and loose component connections caused by inaccurate positioning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a frontal view of the overall structure of this utility model.

[0018] Figure 3 This is a side view of the overall structure of this utility model.

[0019] Figure 4 This is a schematic diagram of a partial structure of the clamping part of this utility model. Figure 1 .

[0020] Figure 5 This is a schematic diagram of a partial structure of the clamping part of this utility model. Figure 2 .

[0021] Figure 6 This is a schematic diagram of a partial structure of the clamping part of this utility model. Figure 3 .

[0022] Figure 7This is a schematic diagram of a partial structure of the clamping part of this utility model. Figure 4 .

[0023] Figure 8 This is a schematic diagram of a partial structure of the clamping part of this utility model. Figure 5 .

[0024] Figure 9 This is a schematic diagram of a partial structure of the clamping part of this utility model. Figure 6 .

[0025] Figure 10 This is a schematic diagram of a partial structure of the adjusting part of this utility model. Figure 1 .

[0026] Figure 11 This is a schematic diagram of a partial structure of the adjusting part of this utility model. Figure 2 .

[0027] Figure 12 This is a partial structural diagram of the support part of this utility model.

[0028] Reference numerals: 1-Clamping part; 2-Adjusting part; 3-Supporting part; 4-Tabletop; 101-Clamping adjusting rod; 102-Clamping return spring; 103-Clamping seat; 104-Clamping rotating ring; 105-Clamping roller one; 106-Clamping roller two; 107-Clamping spring; 108-Clamping plate one; 109-Clamping plate two; 110-Clamping motor; 111-Clamping connecting rod one; 112-Clamping connecting rod two; 113-Clamping connecting rod three; 114-Clamping slide rod one; 115-Clamping slide rod two; 201-Adjusting shaft; 202-Adjusting sliding frame; 203-Adjusting seat; 204-Adjusting clamping plate; 205-Adjusting screw; 301-Supporting base plate; 302-Supporting frame; 303-Supporting side plate. Detailed Implementation

[0029] 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.

[0030] like Figures 1 to 12 As shown, an auxiliary positioning fixture for welding office desks and chairs includes a clamping part 1, an adjusting part 2, and a supporting part 3; the clamping part 1 is used to fix the position of the tabletop 4, the adjusting part 2 is used to flexibly position the table legs, and the supporting part 3 is used to provide support.

[0031] like Figures 1 to 12As shown, the support part 3 includes a support base plate 301, a support frame 302, and a support side plate 303; there are two support side plates 303, and the support base plate 301 and the support frame 302 are fixedly arranged between the two support side plates 303, and a sliding groove is provided on the support side plate 303.

[0032] like Figures 1 to 12 As shown, the clamping part 1 includes a clamping motor 110, a first clamping link 111, a second clamping link 112, a third clamping link 113, a first clamping slide bar 114, a second clamping slide bar 115, and a positioning mechanism. The first clamping slide bar 114 and the second clamping slide bar 115 are slidably mounted on the support frame 302. The second clamping link 112 is rotatably mounted on the first clamping slide bar 114, and the other end of the second clamping link 112 is rotatably mounted on the first clamping link 111. The first clamping rod 111 is fixedly mounted on the output shaft of the clamping motor 110, and the clamping motor 110 is fixedly mounted on the support frame 302. The other end of the first clamping rod 111 is rotatably mounted on the third clamping rod 113, and the other end of the third clamping rod 113 is rotatably mounted on the second clamping slide rod 115. At least two adjustable positioning mechanisms are respectively provided on the first clamping slide rod 114 and the second clamping slide rod 115. The positioning mechanisms are used to position the table 4.

[0033] like Figures 1 to 12 As shown, the positioning mechanism includes a clamping adjusting rod 101, a clamping return spring 102, a clamping seat 103, a clamping rotating ring 104, a clamping roller 105, a clamping roller 106, a clamping spring 107, a clamping plate 108, and a clamping plate 109. The clamping seat 103 is axially slidably mounted on the clamping slide rod 114 and the clamping slide rod 115. The clamping adjusting rod 101 is axially slidably mounted on the clamping seat 103. The clamping adjusting rod 101 engages with the insertion holes on the clamping slide rod 114 and the clamping slide rod 115 to adjust its position. A clamping return spring 102 is provided between the clamping adjusting rod 101 and the clamping seat 103. A clamping rotating ring 104 is rotatably mounted on the clamping seat 103. 04. A clamping plate 108 and a clamping plate 109 are fixedly mounted on the clamping rotating ring 104. A clamping roller 105 is rotatably mounted on the clamping plate 108, and a clamping roller 106 is rotatably mounted on the clamping plate 109. The clamping plate 109 is connected to the clamping seat 103 through a clamping spring 107. One end of the clamping spring 107 is fixed to the clamping seat 103, and the other end is connected to the clamping plate 109 to provide elastic support for the clamping plate 109. Both the clamping roller 105 and the clamping roller 106 are made of rubber material. The insertion holes are arranged in a row along the axial direction of the clamping slide rod 114 and the clamping slide rod 115. The included angle between the clamping plate 108 and the clamping plate 109 is 90°.

[0034] like Figures 1 to 12As shown, the adjustment part 2 includes an adjustment shaft 201, an adjustment sliding frame 202, an adjustment seat 203, an adjustment clamping plate 204, and an adjustment screw 205. The adjustment shaft 201 is slidably mounted on the support side plate 303 along a groove provided on the support side plate 303. The adjustment sliding frame 202 is slidably mounted on the adjustment shaft 201, and the adjustment seat 203 is slidably mounted on the adjustment sliding frame 202. The middle part of the adjustment seat 203 has a hollow structure, and the diameter of the hollow structure is larger than the diameter of the table leg. The adjustment clamping plate 204 is symmetrically arranged on the adjustment seat 203 along the rotation center of the hollow structure. The adjustment screw 205 is rotatably mounted on the adjustment clamping plate 204. The adjustment screw 205 is threadedly engaged with the adjustment seat 203. The adjustment clamping plate 204 is slidably mounted on the adjustment seat 203 through a guide post. The adjustment clamping plate 204 is provided with rubber protrusions to increase friction with the table leg. The adjusting seat 203, the adjusting sliding frame 202, and the adjusting shaft 201 are all equipped with fixing bolts. By tightening these fixing bolts, the position of the adjusting sliding frame 202 on the adjusting shaft 201 is fixed, the position of the adjusting seat 203 on the adjusting sliding frame 202 is fixed, and the position of the adjusting shaft 201 on the supporting side plate 303 is fixed.

[0035] like Figures 1 to 12As shown, this utility model discloses an auxiliary positioning fixture for welding office desks and chairs. Its working principle is as follows: the tabletop 4 is fixed; the tabletop 4 is slid from the support base plate 301 into the positioning mechanism; the operator adjusts the position of the positioning mechanism according to the size of the tabletop 4 in the batch being processed; specifically, the operator pulls the clamping adjustment rod 101, which slides out of the insertion hole on the clamping slide rod 114 or the clamping slide rod 115; then the operator pushes the clamping seat 103. The clamping rotating ring 104, clamping plate one 108, clamping plate two 109, clamping roller one 105, clamping roller two 106, clamping spring 107 and other components set on the clamping seat 103 slide synchronously with the clamping seat 103 to adjust the position of the positioning mechanism, so as to clamp and fix table boards 4 of different sizes. After the positioning mechanism is adjusted, under the action of the clamping reset spring 102, the clamping adjustment rod 101 is pushed to cooperate with the insertion hole again to fix the position of the positioning mechanism. Then, the clamping motor 110 is started. The clamping motor 110 rotates and drives the clamping link 111. The clamping link 111 drives the clamping link 2 112 and the clamping link 3 113, which in turn pull the clamping slide bar 1 114, the clamping slide bar 2 115, and the positioning mechanism set on the clamping slide bar 1 114 and the clamping slide bar 2 115 to slide along the support frame 302 towards the table 4. At this time, the clamping roller 105 first puts one side of the table 4 into contact. As the clamping slide bar 1 114 and the clamping slide bar 2 115 continue to move closer to the table 4, when the clamping roller 105 puts one side of the table 4 into contact, the clamping rotating ring 104 rotates, so that the clamping roller 2 106 puts the other side of the table 4 into contact and positions the table 4 in the designated position, thus completing the fixation of the position of the table 4.

[0036] After the tabletop 4 is positioned, the operator inserts the table legs to be welded onto the tabletop 4 through the adjusting seat 203. Then, the operator turns the adjusting screw 205, causing it to rotate and slide the adjusting clamping disc 204, clamping the table legs between the two adjusting clamping discs 204. The operator then moves the adjusting seat 203 to align the welding area of ​​the table legs with the tabletop 4. The operator then tightens the fixing bolts to fix the position of the adjusting sliding bracket 202 on the adjusting shaft 201, the position of the adjusting seat 203 on the adjusting sliding bracket 202, and the position of the adjusting shaft 201 on the supporting side plate 303. This fixes the relative position between the table legs and the tabletop 4. Welding then begins. After welding, the fixing bolts are loosened, and the adjusting shaft 201 is moved to the highest point on the supporting side plate 303, disengaging the table legs from the adjusting seat 203. The tabletop 4 is then removed, completing the welding operation.

[0037] Similarly, when welding office chairs, replace the tabletop 4 with the chair board and the table legs with the chair legs, and follow the same operating principle to complete the welding of the office chair. This provides auxiliary positioning for welding office desks and chairs, improves processing efficiency, and enhances the versatility of the equipment.

Claims

1. An auxiliary positioning fixture for welding office desks and chairs, comprising a support part (3), the support part (3) comprising a support base plate (301) and a support frame (302); the support base plate (301) and the support frame (302) are fixedly disposed between support side plates (303), characterized in that: It also includes a clamping part (1) for fixing the tabletop (4) and an adjusting part (2) for flexibly positioning the table legs; The clamping part (1) includes a clamping slide bar one (114) and a clamping slide bar two (115). The clamping slide bar one (114) and the clamping slide bar two (115) are slidably mounted on the support frame (302). A clamping connecting rod two (112) is rotatably mounted on the clamping slide bar one (114). The other end of the clamping connecting rod two (112) is rotatably mounted on the clamping connecting rod one (111). A clamping connecting rod three (113) is rotatably mounted on the other end of the clamping connecting rod one (111). The other end of the clamping connecting rod three (113) is rotatably mounted on the clamping slide bar two (115). At least two adjustable positioning mechanisms are respectively provided on the clamping slide bar one (114) and the clamping slide bar two (115). The positioning mechanisms are used to position the table board (4). The adjustment part (2) includes an adjustment shaft (201) slidably disposed on the support side plate (303), an adjustment sliding frame (202) slidably disposed on the adjustment shaft (201), an adjustment seat (203) slidably disposed on the adjustment sliding frame (202), an adjustment clamping plate (204) symmetrically disposed on the adjustment seat (203), an adjustment screw (205) rotatably disposed on the adjustment clamping plate (204), and the adjustment screw (205) and the adjustment seat (203) are engaged by threads.

2. The auxiliary positioning fixture for welding office desks and chairs according to claim 1, characterized in that: The positioning mechanism includes a clamping seat (103), which is slidably mounted on clamping slide rod one (114) and clamping slide rod two (115). A clamping adjustment rod (101) is slidably mounted on the clamping seat (103). The clamping adjustment rod (101) cooperates with the insertion holes on clamping slide rod one (114) and clamping slide rod two (115) to adjust its position. A clamping joint is provided between the clamping adjustment rod (101) and the clamping seat (103). A clamping spring (102) is provided on the clamping seat (103), and a clamping rotating ring (104) is rotatably provided on the clamping rotating ring (104). A clamping plate one (108) and a clamping plate two (109) are fixedly provided on the clamping rotating ring (104). A clamping roller one (105) is rotatably provided on the clamping plate one (108), and a clamping roller two (106) is rotatably provided on the clamping plate two (109). The clamping plate two (109) is provided on the clamping seat (103) through a clamping spring (107).

3. The auxiliary positioning fixture for welding office desks and chairs according to claim 2, characterized in that: The middle part of the adjustment seat (203) has a hollow structure, and the diameter of the hollow structure is larger than the diameter of the table leg.

4. The auxiliary positioning fixture for welding office desks and chairs according to claim 3, characterized in that: The adjusting clamping disc (204) is slidably mounted on the adjusting seat (203) via a guide post, and the adjusting clamping disc (204) is provided with rubber protrusions for increasing friction.

5. The auxiliary positioning fixture for welding office desks and chairs according to claim 4, characterized in that: Both clamping roller one (105) and clamping roller two (106) are made of rubber material.

6. The auxiliary positioning fixture for welding office desks and chairs according to claim 5, characterized in that: The insertion holes are arranged in a row along the axial direction of clamping slide bar one (114) and clamping slide bar two (115).

7. An auxiliary positioning fixture for welding office desks and chairs according to claim 6, characterized in that: The included angle between clamping plate one (108) and clamping plate two (109) is 90°.

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