A carbon fiber ring chair wrap-around adhesive jig

Abstract

A carbon fiber armchair bonding fixture includes a bonding frame mounted on a mobile trolley. The bonding frame is equipped with a crossbeam fixing mechanism, a leg fixing mechanism, a backrest fixing mechanism, an armrest fixing mechanism, a seat cushion fixing mechanism, and a support fixing mechanism for bonding the carbon fiber armchair. The backrest fixing mechanism is located on the upper rear side of the rear portion of the bonding frame. The support fixing mechanism and armrest fixing mechanism are respectively located on the upper left and right sides of the bonding frame. The seat cushion fixing mechanism is located on the left and right sides of the middle portion of the bonding frame. The leg fixing mechanism is located on the front and rear sides of the middle portion of the bonding frame. The crossbeam fixing mechanism is located on the lower left and right sides of the bonding frame. The bonding frame has transverse grooves for the left and right sliding of the two ends of the leg fixing mechanism, armrest fixing mechanism, and support fixing mechanism. This invention is scientifically designed, convenient, and efficient, enabling precise bonding of carbon fiber armchairs and improving bonding accuracy and quality.

Description

Technical Field

[0001] This utility model relates to the field of adhesive bonding fixture technology, and in particular to a carbon fiber ring chair-type adhesive bonding fixture. Background Technology

[0002] Carbon fiber, a material possessing both lightweight and high strength, is increasingly expanding its applications from aerospace to numerous industries such as automotive manufacturing and sporting goods. In furniture design, carbon fiber, with its lightweight, high strength, and good plasticity, is becoming a preferred material for the manufacture of chairs and other furniture products.

[0003] Given the complexity of the carbon fiber chair manufacturing process, achieving unibody molding presents numerous challenges. Therefore, current production strategies tend to employ modular molding followed by gluing. In this process, gluing fixture technology plays a crucial role. A gluing fixture is a customized auxiliary tool whose primary function is to fix and support carbon fiber components, ensuring that the components maintain precise position and shape during gluing. If the gluing gap is too large, the dimensional accuracy of the components cannot be guaranteed. Although high-precision fits can be achieved through machining, this leads to a significant increase in processing costs due to modularization. However, applying gluing fixture technology not only reduces the precision requirements of the fit but also helps achieve low-cost production. Therefore, to ensure the strength and stability of the joints, specially designed gluing fixtures must be used.

[0004] With the continuous advancement of carbon fiber material technology and the constant innovation in furniture design and manufacturing, carbon fiber chair bonding fixture technology is also constantly developing and improving. Looking to the future, as society's requirements for furniture quality and environmental performance continue to rise, carbon fiber chair bonding fixture technology is expected to see wider application and further development. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a scientifically designed, convenient and efficient carbon fiber armchair bonding fixture that can accurately bond carbon fiber armchairs and improve bonding precision and quality.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution. This utility model is a carbon fiber armchair wrapping bonding fixture, including a bonding frame installed on a mobile trolley. The bonding frame is provided with a crossbeam fixing mechanism, a leg fixing mechanism, a backrest fixing mechanism, an armrest fixing mechanism, a seat cushion fixing mechanism, and a support fixing mechanism for bonding the carbon fiber armchair. The backrest fixing mechanism is located on the upper rear side of the rear part of the bonding frame. The support fixing mechanism and the armrest fixing mechanism are respectively located on the upper left and right sides of the bonding frame. The seat cushion fixing mechanism is located on the left and right sides of the middle part of the bonding frame. The leg fixing mechanism is located on the front and rear sides of the middle part of the bonding frame. The crossbeam fixing mechanism is located on the lower left and right sides of the bonding frame. A transverse sliding groove is provided on the bonding frame for the left and right sliding of the two ends of the leg fixing mechanism, armrest fixing mechanism, and support fixing mechanism.

[0007] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the carbon fiber ring chair circumferential adhesive jig described above, the crossbeam fixing mechanism is a U-shaped groove structure, a polytetrafluoroethylene bushing is embedded in the U-shaped groove structure, and a fine adjustment bolt is screwed on the U-shaped groove structure.

[0008] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the above-mentioned carbon fiber round chair wrap-around adhesive jig, the chair leg fixing mechanism includes a locking block for clamping the chair leg of the carbon fiber round chair and a chair leg base that is slidably installed on the transverse slide groove. The locking block is installed on the chair leg base by bolts.

[0009] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the above-mentioned carbon fiber armchair wrap-around adhesive fixture, the backrest fixing mechanism includes a backrest base and a locking block for clamping the back of the carbon fiber armchair. The locking block is installed on the backrest base, and a number of backrest positioning blocks for cooperating with the back of the carbon fiber armchair are slidably installed on the backrest base through a backrest slider.

[0010] The technical problem to be solved by this utility model can also be further achieved through the following technical solutions: For the carbon fiber armchair wrap-around glued fixture mentioned above, the armrest fixing mechanism includes an armrest round rod clamp, which is slidably installed on the transverse slide groove. The armrest fixing mechanism is a split clamp structure and includes two semi-circular clamping blocks fastened by bolts.

[0011] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the carbon fiber armchair wrap-around adhesive jig described above, the seat cushion fixing mechanism includes a seat cushion tray, which is a rectangular frame structure and has L-shaped baffles around its perimeter.

[0012] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the above-mentioned carbon fiber armchair wrap-around adhesive jig, the support and fixing mechanism includes an adjusting rod, the adjusting rod is slidably installed on the transverse slide groove through a slider, the adjusting rod is screwed on the slider, and a rubber head for cooperating with the carbon fiber armchair is provided on the adjusting rod.

[0013] The technical problem to be solved by this utility model can also be further achieved through the following technical solutions: For the above-mentioned carbon fiber armchair wrap-around adhesive jig, the adhesive frame is provided with a number of fixing holes for fixing the carbon fiber armchair and a number of weight reduction holes; the moving trolley is made of square tube, and the bottom of the moving trolley is provided with two one-way wheels and two universal wheels for easy movement; each component of the jig is made of stainless steel or aluminum alloy and the surface is provided with a ceramic-based heat insulation coating.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by equipping the glued frame with a crossbeam base, leg fixing mechanism, backrest fixing mechanism, armrest fixing mechanism, seat cushion fixing mechanism and support fixing mechanism adapted to the round-back chair, ensures that all parts of the round-back chair can be firmly fixed on the same frame and accurately positioned, which facilitates the glued operation. This not only improves the operation efficiency and significantly increases the glued success rate, but also enhances the production efficiency and realizes rapid mass production. 2. This gluing fixture integrates an ergonomically designed mobile trolley and gluing frame, making it easy to operate and helping to improve the efficiency of gluing operations. Through the precise cooperation between various fixing mechanisms and chair components, unnecessary sliding cooperation is reduced, assembly adjustment errors are lowered, and the needs of high-precision chair assembly are met. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a diagram showing one usage state of the present invention; Figure 3 This is a schematic diagram of a carbon fiber armchair manufactured using this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Reference Figure 1-3 A carbon fiber armchair wrapping bonding fixture includes a bonding frame 2 mounted on a mobile trolley 1, which enables the entire fixture to move flexibly and be easily transferred between different workstations to meet various needs in the production process. The bonding frame 2 is equipped with a crossbeam fixing mechanism 3, a leg fixing mechanism 4, a backrest fixing mechanism 5, an armrest fixing mechanism 6, a seat cushion fixing mechanism 7, and a support fixing mechanism 8 for bonding the carbon fiber armchair. Each fixing mechanism performs its own function and works together to ensure that the carbon fiber armchair can be accurately positioned and firmly fixed during the bonding process.

[0018] From a spatial layout perspective, the backrest fixing mechanism 5 is located on the upper rear side of the back of the glued frame 2, providing stable and suitable support and fixation for the backrest. The support fixing mechanism 8 and the armrest fixing mechanism 6 are respectively located on the upper left and right sides of the glued frame 2, effectively distributing and fixing the force on the corresponding components. The seat cushion fixing mechanism 7 is located on the middle left and right sides of the glued frame 2, matching the actual position of the seat cushion to ensure the stability of the seat cushion during gluing. The chair leg fixing mechanism 4 is located on the front and rear sides of the middle of the glued frame 2, constraining the chair legs from multiple directions. The crossbeam fixing mechanism 3 is located on the lower left and right sides of the glued frame 2, providing a reliable fixing foundation for the crossbeam. In addition, the glued frame 2 is provided with transverse sliding grooves 11 for the chair leg fixing mechanism 4, armrest fixing mechanism 6, and support fixing mechanism 8 to slide left and right at both ends, enabling the fixture to adapt to carbon fiber armchairs of different sizes, greatly improving the versatility and flexibility of the fixture.

[0019] Specifically: The crossbeam fixing mechanism 3 is a U-shaped groove structure, which can fit the shape of the crossbeam well and provide stable support for the crossbeam. A polytetrafluoroethylene (PTFE) bushing is embedded in the U-shaped groove structure. PTFE has excellent self-lubricating and corrosion resistance, which can effectively reduce friction between the crossbeam and the U-shaped groove, reduce wear, and prevent the heat generated by friction from affecting the crossbeam. This ensures the accuracy and quality of the crossbeam during the fixing process. A fine-adjusting bolt is screwed onto the U-shaped groove structure. By rotating the fine-adjusting bolt, the position of the crossbeam can be finely adjusted to ensure that the horizontal accuracy of the crossbeam meets the requirements. The horizontality error can be controlled within a very small range, laying a good foundation for the subsequent gluing process.

[0020] The chair leg fixing mechanism 4 includes a locking block 9 for clamping the carbon fiber round chair legs and a chair leg base 10 slidably mounted on the transverse slide groove 11. The locking block 9 is bolted to the chair leg base 10, so that the locking block 9 can be firmly fixed to the chair leg base 10, while facilitating disassembly and replacement. When fixing the chair legs, the chair legs are placed on the chair leg base 10, and then the chair legs are tightly clamped by the locking block 9 to ensure that the chair legs will not move during the gluing process. Moreover, the chair leg base 10 can slide on the transverse slide groove 11, and the position of the chair leg base 10 can be flexibly adjusted according to different specifications of carbon fiber round chair legs.

[0021] The backrest fixing mechanism 5 includes a backrest base 12 and a locking block 13 for clamping the carbon fiber armchair backrest. The locking block 13 is installed on the backrest base 12. Several backrest positioning blocks 15 for cooperating with the carbon fiber armchair backrest are slidably installed on the backrest base 12 via a backrest slider 14. The backrest positioning blocks 15 can be precisely adjusted according to the shape and size of the backrest, fit tightly with the backrest, and provide multiple fixing points for the backrest. This allows the backrest to be constrained from multiple directions, ensuring the positional accuracy of the backrest during the gluing process and preventing the backrest from shifting or deforming.

[0022] The handrail fixing mechanism 6 includes a handrail rod clamp, which is slidably installed on the transverse slide groove 11. The handrail fixing mechanism 6 is a split clamp structure, including two semi-circular clamping blocks that are fastened by bolts, so that the handrail rod clamp can be easily opened and closed, facilitating the installation and removal of the handrail. When fixing the handrail, the handrail rod is placed between the two semi-circular clamping blocks, and then the clamping blocks are fastened by bolts, thereby achieving a firm fixation of the handrail rod.

[0023] The seat cushion fixing mechanism 7 includes a seat cushion tray, which has a rectangular frame structure and L-shaped guards around its perimeter. The rectangular frame structure of the seat cushion tray provides a stable support platform for the seat cushion, and the L-shaped guards effectively prevent the seat cushion from sliding or shifting during the gluing process, ensuring that the seat cushion is fixed in position.

[0024] The supporting and fixing mechanism 8 includes an adjusting rod, which is slidably mounted on the transverse slide groove 11 via a slider. The adjusting rod is screwed onto the slider, allowing for flexible adjustment in both horizontal and vertical directions to adapt to different height and position support requirements. The adjusting rod is equipped with a rubber head for engaging with the carbon fiber armchair, possessing good elasticity and friction to provide stable support while preventing damage to the surface of the carbon fiber armchair. Through the adjustment of the adjusting rod and the engagement of the rubber head, the supporting and fixing mechanism 8 provides reliable support for the carbon fiber armchair, ensuring the structural stability of the entire armchair during the bonding process.

[0025] The glued frame 2 is provided with several fixing holes for fixing the carbon fiber armchair and several weight-reducing holes. The fixing holes provide precise positions for the installation and fixing of each fixing mechanism, ensuring that each component can be firmly installed on the glued frame 2. The weight-reducing holes effectively reduce the weight of the entire fixture while ensuring the structural strength of the glued frame 2. The overall weight can be reduced by 20%-30%, making it easier and less strenuous for the mobile trolley 1 to move the fixture, and also reducing production costs.

[0026] The mobile trolley 1 is made of square tubing, which has the characteristics of high strength and good stability, and can provide reliable support for the plywood frame 2. The bottom of the mobile trolley 1 is equipped with two one-way wheels and two omnidirectional wheels for easy movement. The combination of one-way wheels and omnidirectional wheels supports 360° turning and fixing, adapts to various workshop ground environments, and reduces movement resistance by 40%. This allows the mobile trolley 1 to move stably in a straight line and flexibly change direction during movement, meeting the movement needs in different work scenarios.

[0027] In practical use, the components of this fixture are made of stainless steel or aluminum alloy. Both materials possess high strength and corrosion resistance, ensuring that the fixture is not easily damaged during long-term use and extending its service life. Simultaneously, each component surface is coated with a ceramic-based heat-insulating coating. This coating has excellent heat insulation properties, effectively preventing heat dissipation during the heated bonding process, reducing thermal conductivity by 60%. This avoids heat transfer affecting other components of the fixture and the carbon fiber ring, ensuring the precision and quality of the bonding process. Transverse slide groove 11 fit tolerance: The sliding fit of the slide groove adopts H7 / g6 clearance fit, and the tolerance range is controlled within 0.02mm~0.05mm to ensure smooth sliding without shaking, and positioning accuracy ≤0.1mm; Positioning block surface fitting: The curved surfaces of the backrest positioning blocks, armrest fixing points, and other components that come into contact with the carbon fiber components are fitted with 1:1 curved surfaces through 3D scanning modeling, with a fit gap of ≤0.3mm, reducing assembly errors caused by shape deviations.

[0028] A method for bonding carbon fiber armchairs using a wrap-around technique, resulting in a 16-inch carbon fiber armchair. Figure 3 As shown, the steps of this method are as follows: (1) Component pre-assembly: The crossbeam, legs, backrest, armrests, and seat cushion of the carbon fiber round chair are placed on the corresponding fixing mechanism of the fixture. The horizontal error of the crossbeam should not exceed ±0.5mm. To achieve this requirement, the operator can use measuring tools such as a level to check and adjust to ensure that the crossbeam is in the correct position in the horizontal direction, so as to provide a good foundation for the subsequent gluing process. (2) Position adjustment: According to the specifications of the carbon fiber armchair, the spacing between the fixed points is adjusted by sliding each base through the transverse slide groove 11 to ensure that all parts are aligned with an alignment error of no more than ±0.3mm. During the adjustment process, the operator needs to carefully observe the positional relationship of each part and use measuring tools for precise measurement and adjustment. For example, for the leg fixing mechanism 4, the spacing between the legs can be adjusted by sliding the position of the leg base 10 on the transverse slide groove 11 according to the length and spacing of the legs. For the armrest fixing mechanism 6, the position of the armrest round rod clamp on the transverse slide groove 11 can be adjusted according to the length and curvature of the armrest to align the armrest with other parts of the armchair. Through precise position adjustment, it can be ensured that the various parts of the carbon fiber armchair can be accurately joined during gluing, thus improving the gluing quality. (3) Clamping and fixing: After the position adjustment is completed, the clamping and fixing stage begins. Each component is clamped by locking blocks with a clamping torque of 50-100 N·m. The clamping blocks are then fixed by screws passing through the fixing holes with a tightening torque of 20-50 N·m. This ensures that each component does not shift during the gluing process, while also preventing damage to the components due to excessive clamping force. This enhances the fixing stability of each component and ensures that each component maintains an accurate position and posture throughout the gluing process.

[0029] (4) Gluing operation: After fixing, apply adhesive and bond. If heat bonding is used, the fixture material must be heat-stabilized and the surface heat-insulating coating must be applied to prevent heat diffusion from affecting accuracy. The heating temperature range is 50-70℃, and the heating time is 30-60 minutes to ensure that the fixture will not deform or be damaged during the heating process, thereby ensuring bonding accuracy. Of course, different types of adhesives and carbon fiber chair materials may require different heating parameters. Operators need to adjust and optimize according to the actual situation to ensure that the adhesive can be fully cured and achieve the best bonding effect.

[0030] (5) Movement and curing: The fixture is moved to the curing area via a mobile trolley 1. The curing area has a temperature of 20-25℃, a humidity of 40%-60%, and a curing time of 12-24 hours. Within this temperature and humidity range, the adhesive can cure at a suitable speed, ensuring bonding strength and quality. If the temperature is too high or too low, or the humidity is too high or too low, it may affect the curing effect of the adhesive, leading to insufficient bonding strength or other quality problems. After curing, the locking block and clamping block are removed, and the finished product is taken out. During disassembly, care should be taken to avoid damaging the finished product and ensure its appearance and structural integrity.

[0031] In this method, the setting of the fixing points of each fixing mechanism is one of the key factors to ensure the bonding quality. Specifically: The chair leg fixing mechanism 4 constrains each chair leg of the carbon fiber round chair through 3-5 fixing points, and the position of the points can be adjusted on the transverse slide groove 11 according to the specifications of the chair legs. This allows for flexible adjustment of the position and number of fixing points according to the diameter, length and shape of different chair legs, ensuring that each chair leg can be stably and reliably fixed and preventing the chair legs from shaking or shifting during the gluing process. The armrest fixing mechanism 6 constrains the round rod of the carbon fiber armrest of the chair through 2-4 fixing points. Two of the points are fixed to the glued frame 2, and the other two points can slide and adjust on the transverse slide groove 11 with the armrest fixing mechanism 6. It can adapt to armrests of different lengths and curvatures. By adjusting the position of the sliding points, the armrest can be accurately fixed in both horizontal and vertical directions, ensuring the alignment and gluing quality of the armrest with other parts of the chair. The backrest fixing mechanism 5 constrains the carbon fiber round chair backrest through 3-5 fixing points. The backrest positioning block has 3-5 fixing points, and the connection between the backrest base and the glued frame 2 has 2 fixing points. These points are fixed relative to the backrest position. Through the coordinated action of multiple fixing points, the backrest can be constrained from multiple directions such as the top, bottom and sides, ensuring the flatness and verticality of the backrest during the glued process and preventing the backrest from deforming or tilting. The seat cushion fixing mechanism 7 constrains the relevant components of the carbon fiber armchair seat cushion through 2-4 fixed points. These points are distributed on the left and right sides of the middle of the glued frame 2 and are fixed in position. They can be evenly distributed around the seat cushion to provide stable support and fixation, ensuring the flatness and stability of the seat cushion during the glued process and preventing the seat cushion from sinking or shifting. The crossbeam fixing mechanism 3 constrains the crossbeam of the carbon fiber armchair through 3-5 fixed points, which are distributed on the corresponding positions on the left and right sides of the lower part of the plywood frame 2 and are fixed in position. This can firmly fix the two ends of the crossbeam, ensure the stability of the crossbeam in the horizontal direction, and provide reliable support for the entire structure of the carbon fiber armchair.

[0032] In summary, this carbon fiber armchair wrap-around bonding fixture, through its reasonable structural design and precise operating procedures, can achieve accurate positioning, firm fixing, and high-quality bonding of various components of the carbon fiber armchair, providing reliable technical support for the production of carbon fiber armchairs.

Claims

1. A carbon fiber ring chair wrap-around adhesive jig, characterized in that: The assembly includes a glued frame mounted on a mobile trolley. The glued frame is equipped with a crossbeam fixing mechanism, a leg fixing mechanism, a backrest fixing mechanism, an armrest fixing mechanism, a seat cushion fixing mechanism, and a support fixing mechanism for bonding carbon fiber armchairs. The backrest fixing mechanism is located on the upper rear side of the rear portion of the glued frame. The support fixing mechanism and armrest fixing mechanism are respectively located on the upper left and right sides of the glued frame. The seat cushion fixing mechanism is located on the middle left and right sides of the glued frame. The leg fixing mechanism is located on the front and rear sides of the middle portion of the glued frame. The crossbeam fixing mechanism is located on the lower left and right sides of the glued frame. The glued frame is provided with transverse sliding grooves for the left and right sliding of the two ends of the leg fixing mechanism, armrest fixing mechanism, and support fixing mechanism.

2. The carbon fiber ring chair wrap-around adhesive jig according to claim 1, characterized in that: The beam fixing mechanism is a U-shaped groove structure, with a polytetrafluoroethylene bushing embedded in the U-shaped groove structure and a fine-adjustment bolt screwed onto the U-shaped groove structure.

3. The carbon fiber armchair wrap-around adhesive jig according to claim 1, characterized in that: The chair leg fixing mechanism includes a locking block for clamping the carbon fiber round chair legs and a chair leg base that is slidably mounted on a transverse groove. The locking block is mounted on the chair leg base by bolts.

4. The carbon fiber armchair wrap-around adhesive jig according to claim 1, characterized in that: The backrest fixing mechanism includes a backrest base and a locking block for clamping the backrest of the carbon fiber armchair. The locking block is installed on the backrest base, and several backrest positioning blocks for cooperating with the backrest of the carbon fiber armchair are slidably installed on the backrest base via a backrest slider.

5. The carbon fiber ring chair wrap-around adhesive jig according to claim 1, characterized in that: The handrail fixing mechanism includes a handrail round rod clamp, which is slidably installed on a transverse slide groove. The handrail fixing mechanism is a split clamp structure and includes two semi-circular clamping blocks that are fastened by bolts.

6. The carbon fiber armchair wrap-around adhesive jig according to claim 1, characterized in that: The seat cushion fixing mechanism includes a seat cushion tray, which has a rectangular frame structure and L-shaped baffles around its perimeter.

7. The carbon fiber armchair wrap-around adhesive jig according to claim 1, characterized in that: The support and fixing mechanism includes an adjusting rod, which is slidably mounted on a transverse slide groove via a slider. The adjusting rod is screwed onto the slider, and a rubber head is provided on the adjusting rod for engaging with the carbon fiber armchair.

8. The carbon fiber ring chair wrap-around adhesive jig according to claim 1, characterized in that: The glued frame is provided with several fixing holes for fixing the carbon fiber armchair and several weight reduction holes; the mobile trolley is made of square tube, and the bottom of the mobile trolley is provided with two one-way wheels and two universal wheels for easy movement; all parts of the fixture are made of stainless steel or aluminum alloy and have a ceramic-based heat insulation coating on the surface.

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