A tool for office chair seat manufacturing

Abstract

The utility model discloses a kind of tool for office chair seat touch system, including vertical frame, rotating mechanism, support plate, compression mechanism and auxiliary positioning mechanism;Rotating mechanism is set on the upper portion of vertical frame, including air pressure type brake disc;Support plate is set on rotating mechanism, and can rotate with rotating mechanism;Compression mechanism includes two groups, and is symmetrically set in the middle of two opposite sides of support plate, positioning hook is set on the compression mechanism, seat front and seat rear of chair seat are respectively placed on two positioning hooks, and tension is applied to chair seat by the compression mechanism;Auxiliary positioning mechanism includes four groups, respectively symmetrically set on the two sides of compression mechanism, including the auxiliary clamp of elastically movable, to fix the two corner angles of chair seat.The present application solves the problem of high labor intensity of workers in the process of manual touch system, makes operation more convenient, improves efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of office chair processing technology, specifically relating to a tooling for office chair seat upholstery. Background Technology

[0002] For office workers, owning a stylish and comfortable office chair is a dream come true. Mesh office chairs combine both aesthetic appeal and comfort, making them increasingly popular. Currently, most mesh office chairs on the market feature a double-frame design: an inner frame made of mesh fabric, and an outer frame secured with self-tapping screws to ensure structural strength.

[0003] The double-frame design has been proven effective in the market: prolonged sitting causes the nails on the inner frame to loosen, leading to the mesh fabric detaching and rendering the seating function ineffective. Therefore, single-frame seats have become the mainstream. The fabrication and installation of these office chair seats involves manual pressing, which requires significant time and labor intensity. The tightening of the mesh fabric edges, inserting the edges into the slots, and the use of a rubber mallet for tapping are all steps that demand considerable time and effort. Furthermore, tightening the mesh fabric edges during the molding process places a heavy strain on the workers' fingers, potentially leading to accumulated work-related injuries over time. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a tooling for upholstering office chair seats, thereby reducing the upholstering time of the wire mesh frame, lowering production costs, and improving the efficiency and quality of wire mesh frame upholstery. The specific technical solution of this utility model is as follows:

[0005] The aforementioned tooling for upholstering office chair seats includes

[0006] Vertical frame;

[0007] A rotating mechanism, located on the upper part of the vertical frame, includes a pneumatic brake disc;

[0008] A support plate is mounted on the rotating mechanism and can rotate with the rotating mechanism.

[0009] The compression mechanism includes two sets, symmetrically arranged in the middle of two opposite sides of the support plate. The compression mechanism is provided with positioning hooks. The front and back of the chair seat are respectively placed on the two positioning hooks, and the compression mechanism applies tension to the chair seat.

[0010] The auxiliary positioning mechanism includes four sets, which are symmetrically arranged on both sides of the compression mechanism. Each set includes an elastically movable auxiliary clamp to fix the corners of the chair seat.

[0011] Furthermore, the vertical frame is an L-shaped frame that is set upright, and the vertical inner wall of the L-shaped frame is provided with side plates, and the pneumatic brake disc is rotatably mounted on the side plates.

[0012] Furthermore, the pneumatic brake disc is fixedly connected to the support plate via a bushing, and the support plate rotates with the pneumatic brake disc.

[0013] Furthermore, the compression mechanism is used to support and apply tension to the front and back of the seat respectively, and the auxiliary positioning mechanism is used to support and apply tension to both sides of the seat, so that the seat forms a curved structure that is high on both sides and low in the middle.

[0014] Furthermore, the auxiliary positioning mechanism includes a mounting rod, one end of which is fixed to the support plate and the other end is provided with a U-shaped frame. A slide rail is provided between the two side walls of the U-shaped frame, and a slider that can move linearly along the slide rail is provided on the slide rail. The auxiliary clamp is provided on the side wall of the slider, and the slider is connected to the side wall of the U-shaped frame by a spring.

[0015] Furthermore, the U-shaped frame is horizontally inclined inward toward the support plate, and the slider is connected to the side wall of the U-shaped frame away from the support plate by a spring; the opening of the auxiliary clamp faces away from the support plate, thereby providing support and elastic stretching for the side wall of the chair seat.

[0016] Furthermore, the compression mechanism includes a tension cylinder placed on the support plate, an mounting plate is provided on the output shaft of the tension cylinder, and the positioning hook is fixedly mounted on the mounting plate.

[0017] Furthermore, limiting rods are provided on both sides of the tension cylinder. One end of the limiting rod is set on the mounting plate, and the other end is movably abutted against the support plate to limit the maximum extension and retraction stroke of the output end of the tension cylinder.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) This application sets up a vertical frame at a height and depth determined according to the average height and movement habits of the operators, which facilitates manual operation, reduces labor intensity and operating time; the setting of the rotating mechanism solves the problem of high labor intensity of workers flipping and moving the mesh frame during manual sizing, making operation more convenient and improving efficiency.

[0020] (2) This application solves the problem that the tension of the mesh fabric varies in different places due to the limitations of workers' operating experience and skill level during manual fabrication by using a compression mechanism (assembly positioning hooks, setting positioning points according to the curved surface shape of the chair seat mesh frame) and an auxiliary positioning mechanism (auxiliary mesh frame tension and compression synchronous buffer deformation strength). Using mesh frame fabrication tooling equipment can achieve uniform tension effect and effectively guarantee quality.

[0021] (3) The application uses a mesh frame molding tooling equipment, which has a high safety factor and greatly reduces the risk of workers' fingers being injured during the molding process; through actual use, it can be seen that the molding time of the tooling in this application has been increased from 600s / psc to 240s / psc, and the molding efficiency has been increased by 40%. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the tooling (including the chair seat) of this utility model;

[0023] Figure 2 This is a top view of the tooling of this utility model;

[0024] Figure 3 This is a structural schematic diagram of the tooling (without a chair seat) of this utility model;

[0025] Figure 4 This is a schematic diagram of the vertical frame and rotating mechanism of this utility model.

[0026] In the diagram: 1-Upright frame, 11-Side plate, 2-Rotating mechanism, 21-Pneumatic brake disc, 22-Rotating locking element, 3-Support plate, 4-Compression mechanism, 41-Tension cylinder, 42-Mounting plate, 43-Limiting rod, 5-Positioning hook, 6-Seat, 7-Auxiliary positioning mechanism, 71-Auxiliary clamp, 72-Mounting rod, 73-U-shaped frame, 74-Slide rail, 75-Slider, 76-Spring, 8-Busset, 9-Wheel caster. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] In the traditional process of fabricating seat mesh frames, the fit between the mesh fabric edge and the back frame groove, the accuracy of the positioning of the edge and groove during fabrication, and the angle and uniformity of the striking force applied by a rubber mallet are all key factors affecting the quality of the fabricated mesh frame. To eliminate the impact of these factors on the quality of the fabricated mesh frame, this application designs a novel and stable fabrication fixture for seat mesh frames. This fixture can significantly reduce the fabrication time and production costs, resulting in a marked improvement in both fabrication efficiency and quality.

[0029] like Figures 1-4 As shown, a tooling for upholstering office chair seats includes a vertical frame 1, a rotating mechanism 2, a support plate 3, a compression mechanism 4, and an auxiliary positioning mechanism 7. The rotating mechanism 2 is located on the upper part of the vertical frame 1 and includes a pneumatic brake disc 21. The support plate 3 is located on the rotating mechanism 2 and can rotate with the rotating mechanism 2. The compression mechanism 4 includes two sets, symmetrically arranged on the middle of the two opposite sides of the support plate 3. The compression mechanism 4 is provided with positioning hooks 5. The front and back of the chair seat 6 are respectively placed on the two positioning hooks 5, and the compression mechanism 4 applies a pulling force to the chair seat 6. The auxiliary positioning mechanism 7 includes four sets, symmetrically arranged on both sides of the compression mechanism 4, including an elastically movable auxiliary clamp 71 to fix the two corners of the chair seat 6.

[0030] In one specific embodiment, the vertical frame 1 is an L-shaped frame that is set upright. The vertical inner wall of the L-shaped frame is provided with a side plate 11, and the pneumatic brake disc 21 is rotatably mounted on the side plate 11. The pneumatic brake disc 21 is fixedly connected to the support plate 3 through a bushing 8. The support plate 3 rotates with the pneumatic brake disc 21. The pneumatic brake disc 21 is locked / unlocked by a foot switch controlling the rotation locking component. Referring to the principle of a brake disc, the pneumatic locking of the brake disc solidifies the molding work at the upper end, reducing unnecessary movement waste.

[0031] Compression mechanism 4 is used to support and apply tension to the front and back of the chair seat respectively, and auxiliary positioning mechanism 7 is used to support and apply tension to both sides of the chair seat, so that the chair seat 6 forms a curved structure with high sides and low middle (i.e., the mesh frame is formed by stretching and deforming the mesh frame with a cylinder). The working process of compression mechanism 4 can be found in patent CN118254389A (fitting tooling and its fitting method). Specifically, compression mechanism 4 includes a tension cylinder 41 placed on support plate 3, and a mounting plate 42 is provided on the output shaft of tension cylinder 41. Positioning hook 5 is fixedly set on mounting plate 42. Limiting rods 43 are provided on both sides of tension cylinder 41. One end of the limiting rod 43 is set on mounting plate 42, and the other end is movably abutting against support plate 3 to limit the maximum extension and retraction stroke of the output end of tension cylinder 41. When tension cylinder 41 retracts until the end of limiting rod 43 abuts against support plate 3, it indicates that the limit stroke has been reached and stretching can no longer continue. The positioning hook 5 also serves to support the chair seat, which is beneficial for assembly and adjustment, effectively preventing it from slipping off the edge of the chair seat when the tension is transmitted, thus optimizing the transmission effect of the tension.

[0032] In this application, the auxiliary positioning mechanism 7 includes a mounting rod 72, one end of which is fixed to the support plate 3, and the other end is provided with a U-shaped frame 73. A slide rail 74 is provided between the two side walls of the U-shaped frame 73, and a slider 75 that can move linearly along the slide rail 74 is provided on the slide rail 74. An auxiliary clamp 71 is provided on the side wall of the slider 75, and the slider 75 is connected to the side wall of the U-shaped frame 73 by a spring 76. The U-shaped frame 73 is horizontally inclined inward toward the support plate 3, and the slider 75 is connected to the side wall of the U-shaped frame 73 away from the support plate 3 by a spring 76. The opening of the auxiliary clamp 71 faces away from the support plate 3, thereby providing support and elastic tension to the side wall of the seat 6.

[0033] To facilitate the movement of the tooling used for upholstering the chair seat, this application provides casters 9 at the bottom of the vertical frame 1.

[0034] To ensure production safety, this application's chair frame upholstery fixture completely replaces the high-labor-intensity operation of traditional manual upholstery, avoiding the risk of accumulated finger injuries to workers during traditional manual upholstery. The fixture adopts a vertical frame operation method, with positioning devices (compression mechanism 4 and positioning hooks 5) and auxiliary positioning mechanisms 7 at the four corners designed according to the curved shape of the back of the frame, avoiding quality degradation caused by incorrect placement of the frame by workers. The operation process of the fixture is as follows: the chair seat and frame are positioned vertically, the air intake switch is activated to pull the frame narrower, and the auxiliary positioning mechanisms 7 at the four corners perform auxiliary positioning simultaneously; then, the positioning hooks 5 are inserted into the center point of the front of the seat for positioning, the two corners on both sides of the front of the seat are evenly inserted, and then one side of the rubber edge is inserted; the foot pedal is pressed to release the pneumatic brake disc 21, the support plate 3 is rotated to the other side, and the foot pedal is pressed to suspend the frame upholstery; finally, it is rotated to the back of the seat to fix and complete the upholstery operation. Seat frame upholstery tooling equipment saves workers' operation time and greatly improves production efficiency; it also eliminates quality problems caused by individual differences during operation, effectively ensuring quality.

[0035] This utility model is an innovative tooling independently developed to improve the standardized process of office chair seat frame upholstery, aiming to provide efficient support for the molding of office chair seat frames. This tooling is designed to ensure consistent strength and tension of the seat frame mesh, emphasizing the stringent requirements for quality control and process compliance in the office chair manufacturing industry. Through this original solution, it aims to solidify the seat frame's seating comfort and employee work efficiency, thereby improving the overall quality and comfort of the final product.

[0036] 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 tooling for upholstering office chair seats, characterized in that, include Vertical frame (1); The rotating mechanism (2) is located on the upper part of the vertical frame (1) and includes a pneumatic brake disc (21). The support plate (3) is mounted on the rotating mechanism (2) and can rotate with the rotating mechanism (2); Compression mechanism (4) includes two sets, symmetrically arranged in the middle of the two opposite sides of the support plate (3). Positioning hooks (5) are provided on the compression mechanism (4). The front and back of the seat (6) are respectively placed on the two positioning hooks (5), and the compression mechanism (4) applies tension to the seat (6). The auxiliary positioning mechanism (7) includes four sets, which are symmetrically arranged on both sides of the compression mechanism (4), including an elastically movable auxiliary clamp (71) to fix the corners of the seat (6) on both sides.

2. The tooling for upholstering office chair seats according to claim 1, characterized in that, The vertical frame (1) is an L-shaped frame that is set upright. The vertical inner wall of the L-shaped frame is provided with a side plate (11). The pneumatic brake disc (21) is rotatably mounted on the side plate (11).

3. The tooling for upholstering office chair seats according to claim 2, characterized in that, The pneumatic brake disc (21) and the support plate (3) are fixedly connected by a bushing (8), and the support plate (3) rotates with the pneumatic brake disc (21).

4. The tooling for upholstering office chair seats according to claim 1, characterized in that, The compression mechanism (4) is used to support and apply tension to the front and back of the seat respectively, and the auxiliary positioning mechanism (7) is used to support and apply tension to both sides of the seat, so that the seat (6) forms a curved structure with high sides and low middle.

5. The tooling for upholstering office chair seats according to claim 4, characterized in that, The auxiliary positioning mechanism (7) includes a mounting rod (72), one end of which is fixed to the support plate (3) and the other end is provided with a U-shaped frame (73). A slide rail (74) is provided between the two side walls of the U-shaped frame (73). A slider (75) that can move linearly along the slide rail (74) is provided on the slide rail (74). An auxiliary clamp (71) is provided on the side wall of the slider (75), and the slider (75) is connected to the side wall of the U-shaped frame (73) by a spring (76).

6. A tooling for upholstering office chair seats according to claim 5, characterized in that, The U-shaped frame (73) is horizontally inclined inward toward the support plate (3), and the slider (75) is connected to the side wall of the U-shaped frame (73) away from the support plate (3) by a spring (76); the opening of the auxiliary clamp (71) faces away from the support plate (3) to achieve support and elastic stretching of the side wall of the seat (6).

7. A tooling for upholstering office chair seats according to any one of claims 1-5, characterized in that, The compression mechanism (4) includes a tension cylinder (41) placed on the support plate (3), and a mounting plate (42) is provided on the output shaft of the tension cylinder (41). The positioning hook (5) is fixedly installed on the mounting plate (42).

8. A tooling for upholstering office chair seats according to claim 7, characterized in that, Limiting rods (43) are provided on both sides of the tension cylinder (41). One end of the limiting rod (43) is set on the mounting plate (42), and the other end is movably abutted against the support plate (3) to limit the maximum extension stroke of the output end of the tension cylinder (41).

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