Replaceable clamp assembly for multiple vehicle types and replacement method of pneumatic clamp of replaceable clamp assembly

Abstract

The invention discloses a replaceable clamp assembly for multiple vehicle types and a replacement method of a pneumatic clamp of the replaceable clamp assembly. The clamp assembly comprises a fixed base, a clamp supporting seat, a pneumatic circuit fixed butt joint device, the pneumatic clamp and a pneumatic circuit movable butt joint device, and the pneumatic clamp comprises a clamp base and a clamp body; the fixture supporting seat is mounted on the fixed base, and the fixture base is placed on the fixture supporting seat; the gas circuit fixing and butting device comprises a fixing seat, an electric socket, a controller and a male head of a gas circuit quick connector; the gas circuit movable butt joint device comprises a connecting base, an electric plug, a circuit board and a female head of a gas circuit quick connector, the female head of the gas circuit quick connector is connected with the clamp body through a hose, gas is used for driving the clamp body to clamp and loosen the automobile workpiece, and welding tongs can conveniently weld the automobile workpiece. According to the pneumatic fixture replacing device, the pneumatic fixture loaded on the fixture supporting seat can be integrally replaced, and different replaced pneumatic fixtures can be controlled only by using one set of controller through butt joint of a gas circuit and a circuit.

Description

Technical Field

[0001] The present invention belongs to the field of clamps, and more particularly, relates to a replaceable clamp assembly for multiple vehicle models and a method for replacing a pneumatic clamp thereof. Background Art

[0002] In the automotive manufacturing industry, welding is a critical step in vehicle body assembly. As core components of welding equipment, the design and application of fixtures directly impact production efficiency, product quality, and cost control. Traditional fixture designs are typically dedicated to a single vehicle model. However, with intensified competition in the automotive market and increasingly diverse consumer demands, automakers need to frequently switch production between different models. This production model places higher demands on the versatility and flexibility of welding fixtures. However, existing technologies have numerous limitations in sharing fixtures across multiple models, making it difficult to meet the efficient and flexible production requirements of modern automotive manufacturing.

[0003] Currently, a common multi-model fixture solution is to equip each vehicle with a separate fixture and share a common welding clamp. These fixtures are typically equipped with wheels and need to be manually pushed to the corresponding welding station. The fixture clamps the automotive workpiece, and then the welding clamps are used to apply the workpiece. Although this solution achieves a certain degree of equipment sharing, it still has many drawbacks. First, each fixture requires an independent control system to control the clamping and release of the fixture, which not only significantly increases the equipment procurement cost but also increases the complexity and cost of subsequent maintenance. The control systems of different fixtures may use different software and hardware architectures, requiring maintenance personnel to master multiple maintenance techniques, increasing labor costs and maintenance time.

[0004] Secondly, wheeled fixtures present numerous difficulties in moving and positioning within the workshop. The steering and braking mechanisms of the wheels are prone to malfunction, preventing the fixture from being accurately parked at its designated workstation, impacting production schedules. Furthermore, the fixture can easily collide with other equipment or personnel during movement, posing a safety hazard. Because wheeled fixtures are prone to movement and shaking, they cannot be stored on shelves and must occupy limited factory floor space. As companies produce more vehicle models, the storage area required for fixtures increases linearly, resulting in reduced factory space utilization. Companies may need to expand their storage areas, further increasing production costs. Summary of the Invention

[0005] In response to the above-mentioned defects or improvement needs of the prior art, the present invention provides a replaceable clamp assembly for multiple vehicle models and a method for replacing the pneumatic clamp thereof, which can replace the pneumatic clamp, replace the pneumatic clamp loaded on the clamp support seat as a whole, and realize the function of controlling the replaced clamp by a set of controllers through air and circuit docking.

[0006] To achieve the above-mentioned object, according to one aspect of the present invention, a replaceable fixture assembly for multiple vehicle types is provided, characterized in that it includes a fixed base, a fixture support seat, a pneumatic fixture, and a pneumatic and circuit fixing and docking device, wherein:

[0007] The fixture support seat is installed on the fixed base;

[0008] The pneumatic clamp includes a clamp base, a clamp body and an air circuit movable docking device, the clamp body is installed on the clamp base, and the clamp base is placed on the clamp support seat;

[0009] The gas circuit fixed docking device includes a fixing seat, an electrical socket, a controller and a male head of a gas circuit quick connector. The fixing seat is fixedly mounted on the fixture support seat. There are multiple male heads of the gas circuit quick connector and they are respectively fixedly mounted on the fixing seat. The electrical socket and the controller are respectively fixedly mounted on the fixing seat, and the electrical socket is electrically connected to the controller.

[0010] The gas-circuit active docking device includes a connecting seat, an electrical plug, a circuit board, and a female head of a gas quick connector. There are multiple female heads of the gas quick connector, which are respectively fixedly mounted on the connecting seat. Each female head is engaged with one male head to achieve gas circuit conduction. The electrical plug and the circuit board are respectively fixedly mounted on the connecting seat, and the electrical plug is electrically connected to the circuit board. The electrical plug is inserted into the electrical socket to achieve circuit conduction.

[0011] Each female end of the gas quick connector is connected to the clamp body through a hose, so that gas is used to drive the clamp body to clamp and release the automobile workpiece, making it easier for the welding clamp to weld the automobile workpiece.

[0012] Preferably, the fixture support seat includes a fixture guide fixing frame and a fixture replacement guide mechanism, the fixture guide fixing frame is installed on the fixed base, the fixture replacement guide mechanism is fixedly installed on the fixture guide fixing frame, the fixture replacement guide mechanism supports the fixture base, and a vertical guide groove is provided on the fixture replacement guide mechanism. The fixture base includes a base body and a vertical guide rail provided on the base body, and the guide rail slides into the guide groove.

[0013] Preferably, a plurality of limit blocks are further provided on the base body, and the limit blocks abut against the fixture replacement guide mechanism to limit the horizontal movement of the fixture base.

[0014] Preferably, the fixed base is mounted on the clamp support seat via a rotating mechanism, so that the clamp support seat and the pneumatic clamp on the clamp support seat are driven to rotate when the rotating mechanism rotates.

[0015] Preferably, the rotating mechanism comprises a base plate, a bearing mounting seat, a plurality of bearings and a rotating housing, wherein:

[0016] The bottom plate is fixedly mounted on the fixed base, and a plurality of bearing mounting seats are fixedly mounted on the bottom plate and are arranged circumferentially;

[0017] One bearing is mounted on each of the bearing mounting seats, and the center lines of some of the bearings are arranged vertically, while the center lines of the other bearings are arranged horizontally;

[0018] All bearings arranged with the center line horizontally support the rotating shell together, and all bearings arranged with the center line vertically abut against the inner wall of the rotating shell to realize the rotation of the rotating shell, and the clamp support seat is fixedly installed on the rotating shell.

[0019] Preferably, the rotating mechanism also includes a bearing adjustment mounting seat and a limit support fixedly mounted on the base plate, the bearing adjustment mounting seat is mounted with a bearing with a vertically arranged center line and the bearing abuts against the inner wall of the rotating shell, the bearing adjustment mounting seat is provided with a long hole, and the base plate is provided with a bolt hole at a position corresponding to the long hole, and the bolt fastener passes through the long hole and the bolt hole to fix the bearing adjustment mounting seat and the base plate together, and the limit support is used to limit the displacement of the bearing adjustment mounting seat.

[0020] Preferably, a limit sensor is also provided on the fixed base to limit the rotational travel of the rotating mechanism.

[0021] Preferably, the apparatus further comprises a fixture storage rack, wherein the fixture storage rack has a plurality of storage spaces and the storage spaces are distributed in order from top to bottom;

[0022] The bottom surface of the clamp base is flat so that the pneumatic clamp can be placed on the clamp storage rack, and the bottom of the clamp base has a groove for accommodating the fork rod of a forklift so that the forklift can pick up the pneumatic clamp and place the pneumatic clamp into the storage space of the clamp storage rack.

[0023] Preferably, a limiting structure is provided on the clamp support seat for limiting the horizontal movement of the clamp base to prevent the clamp base from being horizontally displaced.

[0024] According to another aspect of the present invention, a method for replacing a pneumatic clamp of a replaceable clamp assembly for multiple vehicle types is provided, characterized in that the method comprises the following steps:

[0025] 1) Unplug the female connector and electrical plug of the pneumatic circuit movable docking device from the male connector and electrical socket of the pneumatic circuit fixed docking device, then use a forklift to insert the fork into the groove at the bottom of the pneumatic clamp base, and then use the forklift to transfer the entire pneumatic clamp to the storage space of the clamp storage rack;

[0026] 2) Use a forklift to pick up the fixture base of another pneumatic fixture that needs to be used on the fixture storage rack, and then use the forklift to place the pneumatic fixture on the fixture support base. During the placement process, the guide groove on the support base guides and positions the guide rail on the fixture base, allowing the guide rail to slide downward along the guide groove on the support base;

[0027] 3) Insert the female connector and electrical plug of the pneumatic clamp's air circuit movable docking device on the clamp support seat into the male connector and electrical socket of the air circuit fixed docking device respectively. The pneumatic clamp is replaced.

[0028] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0029] 1) The present invention provides a replaceable fixture assembly for multiple vehicle types, which realizes rapid replacement and reliable control of pneumatic fixtures through the organic combination of a fixed base, a fixture support base, an air circuit fixed docking device, a pneumatic fixture and an air circuit movable docking device. The pneumatic fixture is composed of a fixture base and a fixture body, which can be placed on the fixture support base, providing basic physical support and positioning for fixture replacement. The air circuit fixed docking device integrates a fixed base, an electrical socket, a controller and a plurality of male heads of air circuit quick connectors, which are installed on the fixed base to ensure the stability and reliability of the air circuit connection. At the same time, the electrical socket and the controller are also fixed on the fixed base, and the electrical socket and the controller are electrically connected to build a complete circuit control system, which provides stable power support and precise control signals for the operation of the pneumatic fixture. The pneumatic and electrical circuit docking device includes a connector, an electrical plug, a circuit board, and multiple female quick-connect connectors for the pneumatic circuit. These female connectors snap into place with the male connectors, enabling rapid connection of the pneumatic circuit. The electrical plug and circuit board are also mounted on the connector. The plug is electrically connected to the circuit board and precisely docks with the electrical socket, enabling rapid circuit connectivity and ensuring the circuit board can effectively send and receive signals and accurately control the movement of the pneumatic clamp. Furthermore, the female quick-connect connector is connected to the clamp body via a hose, allowing compressed gas to precisely drive the clamp body to clamp or release the automotive workpiece, providing a strong guarantee for efficient welding of automotive workpieces by the welding clamp. The entire assembly is designed to optimize the use of clamps in the automotive welding process, improve production efficiency, reduce production costs, enhance production flexibility and adaptability, and enable production lines to more agilely respond to the complex demands of co-production of multiple models.

[0030] 2) The replaceable fixture assembly for multiple vehicle models of the present invention realizes the rapid replacement and docking of pneumatic fixtures through a carefully designed replaceable fixture assembly, greatly shortening the time required for fixture replacement, enabling the production line to be quickly adjusted when switching between different vehicle models, reducing the downtime caused by fixture replacement, thereby significantly improving the efficiency of the entire production process, helping enterprises to produce more automotive products within a limited time, and significantly improving production efficiency.

[0031] 3) The replaceable clamp assembly for multiple vehicle models of the present invention allows a set of controllers to uniformly control different replaced pneumatic clamps, avoiding the high equipment procurement costs and subsequent maintenance costs associated with the traditional method of equipping each set of pneumatic clamps with an independent control system.

[0032] 4) The present invention provides a replaceable fixture assembly for multiple vehicle models. The fixture support provides a stable support platform for the fixture base. Combined with the snap-fitting male and female gas quick connectors and the docking of the electrical plug and socket, this allows for rapid connection of the gas and electrical circuits. This enables production lines to quickly replace fixtures and flexibly adjust production tasks based on different vehicle models and production process requirements. This high degree of flexibility and adaptability enables companies to better respond to diverse market demands and achieve co-production of multiple vehicle models. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is the front view of the present invention;

[0034] Figure 2 This is a schematic diagram of the rotating mechanism of the present invention being installed on a fixed base;

[0035] Figure 3 It is an exploded schematic diagram of the present invention;

[0036] Figure 4 A schematic diagram of placing layered pneumatic clamps on a clamp storage rack in the present invention;

[0037] Figure 5 Schematic diagram of the rotating mechanism of the present invention;

[0038] Figure 6 is a schematic diagram of the clamp base in the present invention;

[0039] Figure 7 It is a schematic diagram of the present invention when the gas circuit movable docking device and the gas circuit fixed docking device are docked together;

[0040] Figure 8 It is a schematic diagram of the gas circuit fixing docking device of the present invention being installed on the fixture replacement guide mechanism of the support base.

[0041] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0042] 1. Fixed base; 2. Rotating mechanism; 2-1. Connecting ring; 2-2. Bottom plate; 2-3. Radial support bearing mounting seat; 2-4. Bearing; 2-5. Axial support bearing mounting seat; 2-6. Limit support; 2-7. Bearing adjustment mounting seat; 2-8. Rotating ring; 3. Fixture guide fixing frame; 4. Fixture replacement guide mechanism; 5. Fixture base; 5-1. Base body; 5-2. Guide rail; 5-3. Limit block; 6. Air circuit movable docking device; 7. Limit sensor; 8. Air circuit fixed docking device; 9. Fixture storage rack; 10. Pneumatic fixture; 11. Fixture body; 12. Fixture support seat; 8-1. Fixed seat; 8-2. Electric socket; 8-3. Male connector; 6-1. Connecting seat; 6-2. Electric plug; 6-3. Female connector; 4-1. Guide groove; 12-1. Limit structure. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0044] Reference Figures 1 to 8 A replaceable fixture assembly for multiple vehicle models includes a fixed base 1, a fixture support seat 12, a pneumatic fixture 10 and an air circuit fixing and docking device 8, wherein:

[0045] The fixture support seat 12 is installed on the fixed base 1.

[0046] The pneumatic clamp 10 includes a clamp base 5, a clamp body 11 and an air circuit movable docking device 6, the clamp body 11 is installed on the clamp base 5, and the clamp base 5 is placed on the clamp support seat 12 to facilitate the replacement of the pneumatic clamp 10. If the clamp base 5 is relatively heavy and not prone to displacement and shaking, the clamp base 5 can be free of position limits. If the clamp base 5 is to be effectively prevented from shifting, the clamp base 5 and the clamp support seat 12 can be detachably connected by bolts. The present invention preferably provides a limiting structure 12-1 on the clamp support seat 12 for limiting the horizontal movement of the clamp base 5 to prevent the clamp base 5 from horizontal displacement. The limiting structure 12-1 does not affect the normal placement and replacement of the pneumatic clamp 10.

[0047] The gas circuit fixed docking device 8 includes a fixed seat 8-1, an electrical socket 8-2, a controller and a male head 8-3 of a gas circuit quick connector. The fixed seat 8-1 is fixedly installed on the clamp support seat 12. There are multiple male heads 8-3 of the gas circuit quick connector and they are respectively fixedly installed on the fixed seat 8-1. The electrical socket 8-2 and the controller are respectively fixedly installed on the fixed seat 8-1, and the electrical socket 8-2 is electrically connected to the controller.

[0048] The gas-circuit movable docking device 6 includes a connecting seat 6-1, an electric plug 6-2, a circuit board and a female head 6-3 of a gas circuit quick connector. There are multiple female heads 6-3 of the gas circuit quick connector and they are respectively fixedly mounted on the connecting seat 6-1. Each of the female heads 6-3 is respectively engaged with one of the male heads 8-3 to achieve gas circuit conduction. The electric plug 6-2 and the circuit board are respectively fixedly mounted on the connecting seat 6-1, and the electric plug 6-2 is electrically connected to the circuit board. The electric plug 6-2 is inserted into the electrical socket 8-2 to achieve circuit conduction.

[0049] Each female end 6 - 3 of the gas quick connector is connected to the clamp body 11 through a hose, so that gas is used to drive the clamp body 11 to clamp and release the automobile workpiece, making it easier for the welding clamp to weld the automobile workpiece.

[0050] The male end 8-3 of the gas quick connector and the female end 6-3 of the gas quick connector can both adopt standardized interface forms. When docking, just plug and snap them together, and the gas circuit is connected. This type of quick connector usually has good sealing performance and can effectively prevent air leakage. Clear functional identification can also be set at the gas circuit interface, and the corresponding gas circuit interface can be connected according to the identification to ensure the correct connection of the gas circuit and prevent the pneumatic clamp 10 from malfunctioning due to incorrect gas circuit connection.

[0051] There are multiple pneumatic clamps 10, and corresponding pneumatic clamps 10 can be replaced to clamp the automobile workpiece according to the shape and size of the automobile workpiece of different models.

[0052] Furthermore, the circuit boards on each pneumatic clamp 10 must meet certain compatibility and consistency requirements. While the control system of the controller on the pneumatic circuit docking device 8 is unified, the circuit boards on each pneumatic clamp 10 may need to connect to different actuators or sensors. Therefore, the design of the circuit boards for each pneumatic clamp 10 needs to be determined based on the specific devices connected to the pneumatic clamp 10. This may result in differences in the type, number, and layout of interfaces on the circuit boards of different pneumatic clamps 10. In this case, the circuit boards need to be customized based on specific functional requirements to meet the unique requirements of pneumatic clamps 10 for different vehicle models. Therefore, the circuit boards on all pneumatic clamps 10 must meet compatibility and consistency requirements. All circuit boards on the pneumatic clamps 10 must use the same communication protocol to ensure effective data exchange with the controller's control system. For example, if the controller's control system uses a specific industrial fieldbus protocol, the circuit boards on each pneumatic clamp 10 must support this protocol to receive control commands and provide feedback on operating status. The circuit boards on each pneumatic clamp 10 should have the same power supply voltage and current requirements to ensure compatibility with the controller's power supply. If the circuit boards of different pneumatic grippers 10 have significantly different power requirements, this can lead to unstable power supply or damage to the circuit boards. Therefore, while the circuit boards of different pneumatic grippers 10 may differ in specific functionality, they should all adhere to a unified control logic. This ensures that after replacing a pneumatic gripper 10, the controller's control system can interact with the new pneumatic gripper 10 in the same manner.

[0053] Furthermore, the fixture support seat 12 includes a fixture guide fixing frame 3 and a fixture replacement guide mechanism 4, the fixture guide fixing frame 3 is installed on the fixed base 1, the fixture replacement guide mechanism 4 is fixedly installed on the fixture guide fixing frame 3, the fixture replacement guide mechanism 4 supports the fixture base 5, and the fixture replacement guide mechanism 4 is provided with a vertical guide groove 4-1, the fixture base 5 includes a base body 5-1 and a vertical guide rail 5-2 provided on the base body 5-1, and the guide rail 5-2 slides into the guide groove 4-1.

[0054] The fixture replacement guide mechanism 4 is responsible for guiding the fixture base 5 into position. When the fixture base 5 is placed on the fixture support seat 12, the vertical guide groove 4-1 on the fixture replacement guide mechanism 4 precisely matches the vertical guide rail 5-2 on the fixture base 5, and the guide rail 5-2 slides smoothly along the guide groove 4-1. This process provides a clear movement direction and positioning reference for the fixture base 5, ensuring that the fixture base 5 can be accurately placed in the predetermined position. This design greatly improves the convenience and accuracy of the fixture replacement operation, allowing operators to complete the replacement task of the pneumatic fixture 10 more easily and quickly, laying a good foundation for the subsequent air circuit and circuit docking work, and further improving the efficiency and stability of the entire production process.

[0055] By setting up the matching structure of the vertical guide groove 4-1 and the guide rail 5-2, precise guiding and positioning functions are provided for the placement of the clamp base 5, effectively avoiding the problems of offset, skewness, etc. that may occur in the placement process of the clamp base 5, and ensuring that the clamp base 5 can be accurately placed at the designated position on the clamp support seat 12.

[0056] The combined design of the fixture guide frame 3 and the fixture replacement guide mechanism 4 simplifies the fixture replacement process. The operator simply needs to roughly align the fixture base 5 with the fixture support 12. The guide mechanism automatically performs the remaining precise guidance and positioning, significantly reducing the operator's operational difficulty and labor intensity, making the replacement of the pneumatic fixture 10 simpler and faster.

[0057] Furthermore, a plurality of limit blocks 5 - 3 are provided on the base body 5 - 1 , and the limit blocks 5 - 3 abut against the fixture replacement guide mechanism 4 to limit the horizontal movement of the fixture base 5 .

[0058] After the clamp base 5 is positioned vertically via the guide rails 5-2 and guide grooves 4-1, the limit blocks 5-3 further constrain the horizontal freedom of movement of the clamp base 5, ensuring that the clamp base 5 maintains a stable, fixed position on the clamp support 12. In an actual production environment, when the pneumatic clamp 10 is in use and subjected to various forces during the welding process, the limit blocks 5-3 effectively prevent the clamp base 5 from horizontal displacement or shaking due to external forces, thereby ensuring the relative position accuracy between the pneumatic clamp 10 and the automotive workpiece, providing a strong guarantee for the precise execution of the welding work.

[0059] Furthermore, the fixed base 1 is mounted with the clamp support seat 12 via a rotating mechanism 2 , so that the clamp support seat 12 and the pneumatic clamp 10 on the clamp support seat 12 are driven to rotate when the rotating mechanism 2 rotates.

[0060] The rotating mechanism 2 enables the pneumatic clamp 10 to flexibly adjust its angle and position during operation based on actual welding requirements, greatly facilitating welding operations on automotive workpieces using the welding clamp. The rotating mechanism 2 not only enriches the pneumatic clamp 10's functionality but also significantly enhances the flexibility and adaptability of the welding process, enabling production lines to more efficiently handle diverse vehicle models and complex welding tasks, further optimizing the automotive welding and assembly process.

[0061] The setting of the rotating mechanism 2 enables the fixture support seat 12 and the pneumatic fixture 10 to rotate flexibly, thereby providing the welding clamp with a wider welding operation space and a better welding angle. In the automobile manufacturing process, the welding requirements of different parts are different. The welding of some special parts may require the automobile workpiece to be at a specific angle. Through the rotating mechanism 2, the operator can quickly and accurately adjust the pneumatic fixture 10 and the automobile workpiece to the ideal position, realizing multi-angle and all-round welding of the automobile workpiece, effectively solving the problems of traditional fixed fixtures being inconvenient to operate and having many welding dead angles when welding complex structural parts, significantly improving the flexibility and adaptability of the welding process, and being able to better meet the diverse welding process requirements in the co-production of multiple models. When facing welding tasks of different models, there is no need to frequently replace the pneumatic fixture 10 or perform complicated re-clamping operations on the automobile workpiece. By quickly adjusting the angle of the pneumatic fixture 10 through the rotating mechanism 2, new welding requirements can be met, which greatly shortens the production preparation time and adjustment time and improves the overall utilization rate of the equipment. The rotating mechanism 2 can achieve precise angle adjustment, so that the workpiece always maintains the best welding position and posture during the welding process, which is conducive to the operation of the welding clamp according to the ideal welding process parameters, ensuring the stability and consistency of the welding quality, thereby improving the welding quality.

[0062] Further, see Figure 5 The rotating mechanism 2 includes a base plate 2-2, a bearing mounting seat, a plurality of bearings 2-4 and a rotating shell, wherein:

[0063] The base plate 2 - 2 is fixedly mounted on the fixed base 1 , and a plurality of bearing mounting seats are fixedly mounted on the base plate 2 - 2 and are arranged circumferentially.

[0064] A bearing 2-4 is installed on each of the bearing mounting seats, and the center lines of some of the bearings 2-4 are set vertically, while the center lines of other bearings 2-4 are set horizontally; the bearings 2-4 with the center lines set vertically are radial support bearings, and the bearings 2-4 with the center lines set horizontally are axial support bearings. The bearing mounting seat for installing the radial support bearing 2-4 is the radial support bearing mounting seat 2-3, and the bearing mounting seat for installing the axial support bearing 2-4 is the axial support bearing mounting seat 2-5.

[0065] All bearings 2-4 arranged with the centerline horizontally support the rotating shell together, and all bearings 2-4 arranged with the centerline vertically abut the inner wall of the rotating shell to achieve rotation of the rotating shell. The fixture support seat 12 is fixedly mounted on the rotating shell. The rotating shell includes a connecting ring 2-1 and a rotating ring 2-8. The connecting ring 2-1 is a plate member and is fixedly connected to the fixture support seat 12. The radial support bearings 2-4 abut the inner wall of the rotating ring 2-8, and the axial support bearings 2-4 support the connecting ring 2-1.

[0066] The combination of base plate 2-2, bearing mount, bearing 2-4, and rotating housing provides solid, reliable mechanical support and precise rotational guidance for the pneumatic clamp 10. The rational arrangement and coordinated operation of multiple bearings 2-4 effectively disperse the various forces generated during rotation, reducing the load on individual bearings 2-4 and improving the overall load-bearing capacity and wear resistance of the rotating mechanism 2. This ensures that the clamp support 12 and the pneumatic clamp 10 maintain a stable and smooth motion during rotation, avoiding problems such as workpiece shaking and welding deviation caused by unstable rotation, improving welding quality and production efficiency, and ensuring the stability and reliability of the production process.

[0067] Furthermore, the rotating mechanism 2 also includes a bearing adjustment mounting seat 2-7 and a limit support 2-6 fixedly mounted on the base plate 2-2, the bearing adjustment mounting seat 2-7 is installed with a bearing 2-4 with a vertically arranged center line and the bearing 2-4 is in contact with the inner wall of the rotating shell, the bearing adjustment mounting seat 2-7 is provided with a long hole, and the base plate 2-2 is provided with a bolt hole at a position corresponding to the long hole, and the bolt fastener passes through the long hole and the bolt hole to fix the bearing adjustment mounting seat 2-7 and the base plate 2-2 together, and the limit support 2-6 is used to limit the displacement of the bearing adjustment mounting seat 2-7.

[0068] The bearing adjustment mount 2-7 is fixedly mounted on the base plate 2-2, and a bearing 2-4 is mounted thereon, which is arranged vertically with its centerline. This bearing 2-4 abuts against the inner wall of the rotating shell and, together with the other vertically arranged bearings 2-4 mentioned in claim 5, further enhances the vertical support and stability of the rotating shell. At the same time, a long hole is cleverly provided on the bearing adjustment mount 2-7, and bolt holes are provided at corresponding positions on the base plate 2-2. Bolt fasteners are passed through the long hole and the bolt hole to securely connect the bearing adjustment mount 2-7 and the base plate 2-2 together. This structure allows the bearing adjustment mount 2-7 to be adjusted within a certain range, facilitating fine adjustments to the preload and position of the bearing 2-4 during the equipment installation and commissioning phase or after long-term use, thereby ensuring that the rotating mechanism 2 always maintains its optimal operating state. The introduction of the limit support 2-6 is mainly used to limit the displacement of the bearing adjustment mount 2-7, preventing it from excessive movement or offset during the adjustment process or when subjected to external forces, ensuring that the bearing adjustment mount 2-7 can stably and reliably perform its supporting and adjustment functions, thereby further improving the stability and reliability of the rotating mechanism 2 and ensuring the normal operation and precise operation of the entire fixture assembly.

[0069] Over long-term use, key components of rotating mechanism 2, such as bearings 2-4, inevitably wear out, resulting in reduced rotational accuracy or the appearance of clearance. The adjustable design of bearing adjustment mount 2-7 allows operators to easily adjust the preload or fine-tune the position of bearing 2-4 during equipment maintenance to compensate for the wear clearance of bearing 2-4 and restore the original accuracy and performance of rotating mechanism 2.

[0070] Furthermore, a limit sensor 7 is provided on the fixed base 1 to limit the rotation stroke of the rotating mechanism 2, so that the pneumatic clamp 10 can achieve 270° rotation during operation.

[0071] By adding a limit sensor 7 to the fixed base 1, effective limitation and precise control of the rotation stroke of the rotating mechanism 2 are achieved. As a high-precision detection device, the limit sensor 7 can monitor the rotation angle and position of the rotating mechanism 2 in real time and feed back the corresponding signal to the control system. When the rotating mechanism 2 is about to reach its predetermined maximum rotation angle or enter the prohibited rotation area, the limit sensor 7 will promptly send a signal. After receiving the signal, the control system will quickly take measures to control the rotating mechanism 2 to stop rotating or adjust the rotation direction, thereby ensuring that the rotating mechanism 2 always operates within a safe and reasonable angle range. This design can flexibly adjust and precisely control the rotation stroke of the rotating mechanism 2 according to different welding process requirements and vehicle characteristics, thereby improving the intelligence level and operational flexibility of the equipment and providing a strong guarantee for the efficient and stable progress of the automobile welding process.

[0072] Furthermore, the apparatus further comprises a fixture storage rack 9, wherein the fixture storage rack 9 has a plurality of storage spaces and the storage spaces are distributed in order from top to bottom;

[0073] The bottom surface of the clamp base 5 is flat so that the pneumatic clamp 10 can be placed on the clamp storage rack 9, and the bottom of the clamp base 5 has a groove for accommodating the fork rod of a forklift so that the forklift can pick up the pneumatic clamp 10 and place the pneumatic clamp 10 into the storage space of the clamp storage rack 9.

[0074] Focusing on the storage and management of the entire multi-model replaceable fixture assembly, an innovative solution of adding a fixture storage rack 9 was proposed. The fixture storage rack 9 has multiple storage spaces distributed in order from top to bottom, which can reasonably and orderly store pneumatic fixtures 10 of various specifications and uses, providing an efficient solution for fixture management at the production site. At the same time, the structure of the fixture base 5 is cleverly designed to keep its bottom surface flat, and a groove for accommodating the fork rod of a forklift is provided at the bottom. In this way, the forklift can be easily inserted into the groove at the bottom of the fixture base 5, and the pneumatic fixture 10 can be easily forked and smoothly placed in the designated storage space of the fixture storage rack 9, realizing efficient storage and convenient transportation of the pneumatic fixture 10. This design not only optimizes the storage method of the pneumatic fixture 10, but also improves the storage density and space utilization of the pneumatic fixture 10, bringing great convenience to the space management of the production site and further improving the use and management system of the multi-model replaceable fixture assembly.

[0075] The multi-layered storage design of the fixture storage rack 9 fully utilizes vertical space resources, transforming traditional flat-surface storage into a three-dimensional storage model. This significantly reduces the floor space occupied by the pneumatic fixtures 10. Within the limited factory space, companies can store a wider variety and quantity of pneumatic fixtures 10, effectively resolving the conflict between the increasing number of fixtures and insufficient storage space caused by the co-production of multiple models, thereby improving space utilization on the production site.

[0076] The orderly distribution and standardized storage space design of the fixture storage racks 9 make the storage and access of pneumatic fixtures 10 more standardized and convenient. Each pneumatic fixture 10 has its own storage location, making it easy for operators to quickly find the required pneumatic fixture 10 and improving production preparation efficiency. Furthermore, the convenient handling function of the forklift makes the transfer of pneumatic fixtures 10 between the fixture storage racks 9 and welding stations more efficient, reducing the labor intensity and time cost of manual handling. This allows for the mechanization and automation of fixture storage management, improves the logistics efficiency and management level of the production site, and provides strong support for enterprises to create a modern and efficient production environment.

[0077] The structural design of the fixture storage rack 9 fully considers the safe storage requirements of the pneumatic fixture 10. Its multiple storage spaces are planned according to reasonable sizes and layouts, which can ensure that the pneumatic fixture 10 remains stable and reliable during storage, and avoid damage to the fixture due to unstable stacking or collisions. The flat bottom surface of the fixture base 5 fits tightly with the support surface of the storage rack, and the coordination between the bottom groove of the fixture base 5 and the forklift fork rod has also been carefully designed to ensure the stability of the pneumatic fixture 10 during transportation and storage. In addition, the fixture storage rack 9 can also be customized according to the different weights and sizes of the pneumatic fixtures 10, further improving the safety and reliability of the fixture storage rack 9 storage, reducing production delays and economic losses caused by damage to the fixture storage rack 9, and ensuring the continuity and stability of production.

[0078] According to another aspect of the present invention, a method for replacing a pneumatic clamp of a replaceable clamp assembly for multiple vehicle models is provided, comprising the following steps:

[0079] 1) Unplug the female connector 6-3 and the electrical plug 6-2 of the movable air circuit docking device 6 from the male connector 8-3 and the electrical socket 8-2 of the fixed air circuit docking device. Then, use a forklift to insert the fork into the groove at the bottom of the fixture base 5 of the pneumatic clamp 10. Then, use the forklift to transfer the entire pneumatic clamp 10 to the storage space of the clamp storage rack 9.

[0080] 2) Use a forklift to lift the fixture base 5 of another pneumatic fixture 10 that needs to be used on the fixture storage rack 9, and then use the forklift to place the pneumatic fixture 10 on the fixture support base 12. During the placement process, the guide groove 4-1 on the support base guides and positions the guide rail 5-2 on the fixture base 5, so that the guide rail 5-2 slides downward along the guide groove 4-1 on the support base;

[0081] 3) Insert the female connector 6-3 and the electrical plug 6-2 of the pneumatic clamp 10 on the clamp support 12 into the male connector 8-3 and the electrical socket 8-2 of the pneumatic clamp fixedly connected to the clamp support 12, and the pneumatic clamp 10 is replaced.

[0082] This replacement method is applicable to interchangeable fixture assemblies for multiple vehicle models, meeting the need for rapid fixture switching during the production of different models. Through a simple, unified replacement process, companies can flexibly adjust fixture configurations on the production line, quickly respond to market changes and order demands, and achieve co-production of multiple models.

[0083] This replacement method fully reflects the design advantages of replaceable fixture components for multiple models, organically integrates the functions and characteristics of each component, and realizes the efficiency, convenience and precision of the replacement process of the pneumatic fixture 10, providing automobile manufacturers with a practical and feasible operation plan for quickly switching pneumatic fixtures 10 and improving production efficiency during the co-production of multiple models.

[0084] The pneumatic clamp 10 is moved with the help of auxiliary equipment such as a forklift, which reduces the operator's physical labor intensity and makes the replacement of the pneumatic clamp 10 easier and more convenient.

[0085] The present invention not only realizes the rotation function, but also has the function of replacing the pneumatic clamp 10, and can replace the pneumatic clamp 10 loaded thereon in its entirety. And through the connection of air circuits and circuits, a set of electrical control systems is implemented to control the replaced pneumatic clamp 10, avoiding the need for push-type clamps, each with its own control and operating system, saving equipment investment. Furthermore, the pneumatic clamps 10 of the vehicle model are stored on shelves and transferred for storage by forklift, occupying a small area of ​​factory space. The above solution can be used in limited workspaces and can realize the use of multiple pneumatic clamps 10.

[0086] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A replaceable fixture assembly for multiple vehicle types, characterized in that: It includes a fixed base, a fixture support base, a pneumatic fixture and a pneumatic circuit fixing and docking device, wherein: The fixture support seat is installed on the fixed base; The pneumatic clamp includes a clamp base, a clamp body and an air circuit movable docking device, the clamp body is installed on the clamp base, and the clamp base is placed on the clamp support seat; The gas circuit fixed docking device includes a fixing seat, an electrical socket, a controller and a male head of a gas circuit quick connector. The fixing seat is fixedly mounted on the fixture support seat. There are multiple male heads of the gas circuit quick connector and they are respectively fixedly mounted on the fixing seat. The electrical socket and the controller are respectively fixedly mounted on the fixing seat, and the electrical socket is electrically connected to the controller. The gas-circuit active docking device includes a connecting seat, an electrical plug, a circuit board, and a female head of a gas quick connector. There are multiple female heads of the gas quick connector, which are respectively fixedly mounted on the connecting seat. Each female head is engaged with one male head to achieve gas circuit conduction. The electrical plug and the circuit board are respectively fixedly mounted on the connecting seat, and the electrical plug is electrically connected to the circuit board. The electrical plug is inserted into the electrical socket to achieve circuit conduction. Each female end of the gas quick connector is connected to the clamp body through a hose, so that gas is used to drive the clamp body to clamp and release the automobile workpiece, making it easier for the welding clamp to weld the automobile workpiece.

2. A replaceable fixture assembly for multiple vehicle types according to claim 1, characterized in that: The fixture support seat includes a fixture guide fixing frame and a fixture replacement guide mechanism. The fixture guide fixing frame is installed on the fixed base. The fixture replacement guide mechanism is fixedly installed on the fixture guide fixing frame. The fixture replacement guide mechanism supports the fixture base. A vertical guide groove is provided on the fixture replacement guide mechanism. The fixture base includes a base body and a vertical guide rail provided on the base body. The guide rail slides into the guide groove.

3. The replaceable fixture assembly for multiple vehicle types according to claim 2, characterized in that: The base body is further provided with a plurality of limit blocks, which abut against the fixture replacement guide mechanism to limit the horizontal movement of the fixture base.

4. The replaceable fixture assembly for multiple vehicle types according to claim 1, characterized in that: The fixed base is mounted on the clamp support seat via a rotating mechanism, so that the clamp support seat and the pneumatic clamp on the clamp support seat are driven to rotate when the rotating mechanism rotates.

5. The replaceable fixture assembly for multiple vehicle types according to claim 4, characterized in that: The rotating mechanism includes a base plate, a bearing mounting seat, a plurality of bearings and a rotating housing, wherein: The bottom plate is fixedly mounted on the fixed base, and a plurality of bearing mounting seats are fixedly mounted on the bottom plate and are arranged circumferentially; One bearing is mounted on each of the bearing mounting seats, and the center lines of some of the bearings are arranged vertically, while the center lines of the other bearings are arranged horizontally; All bearings arranged with the center line horizontally support the rotating shell together, and all bearings arranged with the center line vertically abut against the inner wall of the rotating shell to realize the rotation of the rotating shell, and the clamp support seat is fixedly installed on the rotating shell.

6. The replaceable fixture assembly for multiple vehicle types according to claim 5, characterized in that: The rotating mechanism also includes a bearing adjustment mounting seat and a limit support fixedly mounted on the base plate, the bearing adjustment mounting seat is mounted with a bearing with a vertical centerline and the bearing abuts against the inner wall of the rotating shell, the bearing adjustment mounting seat is provided with an elongated hole, and the base plate is provided with a bolt hole at a position corresponding to the elongated hole, and a bolt fastener passes through the elongated hole and the bolt hole to fix the bearing adjustment mounting seat and the base plate together, and the limit support is used to limit the displacement of the bearing adjustment mounting seat.

7. The replaceable fixture assembly for multiple vehicle types according to claim 5, characterized in that: A limit sensor is also provided on the fixed base to limit the rotational travel of the rotating mechanism.

8. The replaceable fixture assembly for multiple vehicle types according to claim 1, characterized in that: Also included is a fixture storage rack having a plurality of storage spaces and the storage spaces are distributed in order from top to bottom; The bottom surface of the clamp base is flat so that the pneumatic clamp can be placed on the clamp storage rack, and the bottom of the clamp base has a groove for accommodating the fork rod of a forklift so that the forklift can pick up the pneumatic clamp and place the pneumatic clamp into the storage space of the clamp storage rack.

9. The replaceable fixture assembly for multiple vehicle types according to claim 1, characterized in that: A limiting structure is provided on the clamp support seat for limiting the horizontal movement of the clamp base to prevent the clamp base from horizontal displacement.

10. A method for replacing a pneumatic clamp of a replaceable clamp assembly for multiple vehicle models, characterized in that: The following steps are involved: 1) Unplug the female connector and electrical plug of the pneumatic circuit movable docking device from the male connector and electrical socket of the pneumatic circuit fixed docking device, then use a forklift to insert the fork into the groove at the bottom of the pneumatic clamp base, and then use the forklift to transfer the entire pneumatic clamp to the storage space of the clamp storage rack; 2) Use a forklift to pick up the fixture base of another pneumatic fixture that needs to be used on the fixture storage rack, and then use the forklift to place the pneumatic fixture on the fixture support base. During the placement process, the guide groove on the support base guides and positions the guide rail on the fixture base, allowing the guide rail to slide downward along the guide groove on the support base; 3) Insert the female connector and electrical plug of the pneumatic clamp's air circuit movable docking device on the clamp support seat into the male connector and electrical socket of the air circuit fixed docking device respectively. The pneumatic clamp is replaced.

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