A quick-locking device for automatically switching clamps

Abstract

This utility model provides a quick locking device for automatic fixture switching, including a displacement mechanism; a locking and positioning mechanism, which is installed on the displacement mechanism and rotates to adjust its position under the rotation drive of the displacement mechanism; and a welded fixture seat, which is movably installed on the locking and positioning mechanism, forming a positioning and clamping connection with the locking and positioning mechanism. By setting a quick-positioning positioning pin and a wedge-shaped locking method, the device achieves rapid and accurate positioning and locking installation of the fixture during the switching process. Combined with AGV automatic conveying, it meets the requirements for automatic and rapid fixture switching, satisfies the requirements for fixture installation reliability, and improves the operational efficiency of product changeover production.

Description

Technical Field

[0001] This utility model relates to the field of automotive automated production lines, and in particular to a quick-locking device for automatically switching fixtures. Background Technology

[0002] In automotive body welding production lines, with increasing automation and a growing demand for multi-product co-production, the need for automated welding fixture switching has emerged. However, existing automotive welding production lines require operators to reposition, install, and debug welding fixtures during co-production changeovers, resulting in lengthy changeover times, slow cycle times, and low production efficiency. Utility Model Content

[0003] The technical problem this invention aims to solve is that in existing welding production lines, the time for fixture changeover, installation, and debugging is long and production efficiency is low. This invention provides a quick locking device for automatically switching fixtures to solve the above problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a quick locking device for automatic clamp switching, including a displacement mechanism; a locking and positioning mechanism, which is installed on the displacement mechanism and rotates to adjust its position under the rotation drive of the displacement mechanism; and a welding clamp seat, which is movably installed on the locking and positioning mechanism and forms a positioning and clamping connection with the locking and positioning mechanism.

[0005] Furthermore: the locking and positioning mechanism includes a positioning seat, a positioning pin, and a clamping device; the positioning pin is a tapered pin and is installed on the positioning seat; the welding fixture seat is provided with a positioning hole corresponding to the positioning pin; the clamping device includes a movable wedge block and a driving device for driving the movable wedge block to move; the welding fixture seat is provided with a fixed wedge block corresponding to the movable wedge block.

[0006] Further: the driving device includes a screw, a slide rail, a slider, and a sliding frame; the screw has threads with opposite directions at both ends, and a nut is installed on each thread segment of the screw; the slide rail is arranged parallel to the screw, and the slider is slidably arranged on the slide rail corresponding to each nut; a sliding frame is arranged corresponding to each thread segment of the screw, and the sliding frame is fixedly connected to the nut and the slider corresponding to that thread segment; a drive motor is also provided on the screw, and the drive motor drives the screw to rotate, thereby driving the two sliding frames to move closer or further apart along the screw axis; the movable wedge block is installed on the sliding frame.

[0007] Furthermore, the displacement mechanism includes a rotary gear that is rotatably mounted, a displacement flange mounted on the rotary gear, and a displacement gear that drives the rotary gear to rotate. The displacement gear meshes with the rotary gear, and the locking and positioning mechanism is detachably mounted on the displacement flange by bolts.

[0008] The beneficial effects of this utility model are that the quick locking device for automatic fixture switching achieves rapid and accurate positioning and locking of the fixture during the switching process by setting a quick positioning pin and a wedge locking method. Combined with AGV automatic conveying, it realizes the automatic and rapid switching requirements of the fixture, meets the reliability requirements of fixture installation, and improves the operation efficiency of product changeover production. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0010] Figure 1 This is a structural diagram of a quick-locking device for automatically switching clamps; Figure 2 and Figure 4 This is a partial structural diagram of the locking and positioning mechanism; Figure 3 This is a schematic diagram of the structure in which the positioning hole and the fixing wedge block are installed on the positioning seat; In the diagram: 1. Positioning mechanism; 2. Locking and positioning mechanism; 3. Welding fixture seat; 4. Positioning seat; 5. Positioning pin; 6. Clamping device; 7. Positioning hole; 8. Movable wedge block; 9. Drive device; 10. Fixed wedge block; 11. Screw; 12. Slide rail; 13. Slider; 14. Sliding frame; 15. Nut; 16. Drive motor; 17. Rotary gear; 18. Positioning flange; 19. Positioning gear. Detailed Implementation

[0011] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0012] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0013] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0014] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of the present invention pertain.

[0015] like Figures 1 to 4 As shown, this utility model provides a quick locking device for automatically switching clamps, including a displacement mechanism 1; a locking and positioning mechanism 2, which is installed on the displacement mechanism 1 and rotates to adjust its position under the rotation drive of the displacement mechanism 1; and a welding clamp seat 3, which is movably installed on the locking and positioning mechanism 2 and forms a positioning and clamping connection with the locking and positioning mechanism 2.

[0016] The quick-locking device of this application allows the welding fixture seat 3 to be quickly positioned on the locking and positioning mechanism 2 and to complete a quick clamping operation. It can also be used in conjunction with an AGV to achieve automated operation. The AGV first transports the welding fixture to the center of the quick-locking device, then places the welding fixture seat 3 on the locking and positioning mechanism 2, completing automatic positioning and locking of the welding fixture seat 3. After completion, the external robot and the displacement mechanism 1 cooperate to complete the automated welding work. When it is necessary to change the type or replace the welding fixture, the locking and positioning mechanism 2 quickly releases the clamped welding fixture seat 3 to complete the switch, realizing the rapid switching of the welding fixture.

[0017] The locking and positioning mechanism 2 includes a positioning seat 4, a positioning pin 5, and a clamping device 6. The positioning pin 5 is a tapered pin and is installed on the positioning seat 4. The welding fixture seat 3 is provided with a positioning hole 7 corresponding to the positioning pin 5. The clamping device 6 includes a movable wedge block 8 and a driving device 9 for driving the movable wedge block 8 to move. The welding fixture seat 3 is provided with a fixed wedge block 10 corresponding to the movable wedge block 8.

[0018] The positioning of the welding fixture base 3 and the locking and positioning mechanism 2 is achieved by the conical positioning pin 5. The conical positioning hole 7 on the welding fixture base 3 cooperates with the positioning pin 5 for positioning. The positioning accuracy of this positioning method can reach ±0.05mm, and it can be easily removed when it needs to be removed. It has the advantages of high positioning accuracy and rapid positioning.

[0019] The welding fixture seat 3 can be quickly clamped by the cooperation of the movable wedge block 8 and the fixed wedge block 10. The inclined surface of the movable wedge block 8 is pressed and squeezed against the fixed wedge block 10 by the clamping device 6. The mutually pressing inclined surfaces generate a reliable locking force on the welding fixture seat 3, which has reliable self-locking performance and ensures the fixation of the welding fixture seat 3.

[0020] The driving device 9 includes a screw 11, a slide rail 12, a slider 13, and a sliding frame 14. The screw 11 has oppositely helical threads at both ends, and a nut 15 is installed on each thread segment of the screw 11. The slide rail 12 is parallel to the screw 11, and the slider 13 is slidably mounted on the slide rail 12 corresponding to each nut 15. A sliding frame 14 is provided corresponding to each thread segment of the screw 11, and the sliding frame 14 is fixedly connected to the nut 15 and the slider 13 corresponding to that thread segment. A drive motor 16 is also provided on the screw 11, which drives the screw 11 to rotate, thereby driving the two sliding frames 14 to move closer or further apart along the axial direction of the screw 11. The movable wedge block 8 is mounted on the sliding frame 14.

[0021] The screw 11 has a double-ended thread with opposite directions of rotation. Driven by the drive motor 16, the screw 11 rotates, causing the two sliding frames 14 to move closer or further apart. This allows the movable wedge blocks 8 on the sliding frames 14 to move relative to the fixed wedge blocks 10, thus achieving automatic clamping or loosening. The mutual movement of the two movable wedge blocks 8 locks the welding fixture 3. This wedge structure drive method ensures that the plane and the component forces generated on the wedge connection of the threads with opposite directions are equal in magnitude and opposite in direction, so as to cancel each other out. In this way, the welding fixture 3 is only subjected to the resultant force in the clamping direction and is not subjected to adverse external forces in other directions, improving the stress environment of the welding fixture 3 and increasing its stability.

[0022] The displacement mechanism 1 includes a rotary gear 17 rotatably mounted, a displacement flange 18 mounted on the rotary gear 17, and a displacement gear 19 that drives the rotary gear 17 to rotate. The displacement gear 19 is meshed with the rotary gear 17. The locking and positioning mechanism 2 is detachably mounted on the displacement flange 18 by bolts.

[0023] The rotation of the displacement gear 19 drives the rotation of the rotary gear 17. A locking and positioning mechanism 2 is mounted on the rotary gear 17 via a displacement flange 18, thus enabling the locking and positioning mechanism 2 to rotate and shift in the rotational direction. The displacement flange 18 is fixed to the rotary gear 17 and has several threaded holes. By adjusting the connection and fixing methods between different threaded holes and the locking and positioning mechanism 2, the specific position of the locking and positioning mechanism 2 on the displacement flange 18 can be adjusted to accommodate different models of welding fixture seats 3, improving the adaptability of this quick-locking device.

[0024] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A quick locking device for automatic switching gripper, characterized by: include Displacement mechanism (1); The locking and positioning mechanism (2) is installed on the displacement mechanism (1) and rotates to adjust its position under the rotation drive of the displacement mechanism (1); The welding fixture seat (3) is movably mounted on the locking and positioning mechanism (2) and forms a positioning and clamping connection with the locking and positioning mechanism (2).

2. A quick locking device for an automatic switching clamp as claimed in claim 1, characterized in that: The locking and positioning mechanism (2) includes a positioning seat (4), a positioning pin (5), and a clamping device (6). The positioning pin (5) is a tapered pin and is installed on the positioning seat (4). The welding fixture seat (3) is provided with a positioning hole (7) corresponding to the positioning pin (5). The clamping device (6) includes a movable wedge block (8) and a driving device (9) for driving the movable wedge block (8) to move. The welding fixture seat (3) is provided with a fixed wedge block (10) corresponding to the movable wedge block (8).

3. A quick locking device for an automatic switching clamp as claimed in claim 2, characterized in that: The driving device (9) includes a screw (11), a slide rail (12), a slider (13), and a sliding frame (14). The screw (11) has threads with opposite directions at both ends, and a nut (15) is installed on each thread of the screw (11). The slide rail (12) is parallel to the screw (11), and the slider (13) is slidably installed on the slide rail (12) corresponding to each nut (15). The sliding frame (14) is installed on each thread of the screw (11), and the sliding frame (14) is fixedly connected to the nut (15) and the slider (13) corresponding to that thread. A drive motor (16) is also installed on the screw (11), and the drive motor (16) drives the screw (11) to rotate, thereby driving the two sliding frames (14) to move closer or further away from each other along the axial direction of the screw (11). The movable wedge block (8) is installed on the sliding frame (14).

4. A quick locking device for an automatic switching clamp as claimed in claim 3, characterized in that: The displacement mechanism (1) includes a rotary gear (17) rotatably mounted, a displacement flange (18) mounted on the rotary gear (17), and a displacement gear (19) that drives the rotary gear (17) to rotate. The displacement gear (19) meshes with the rotary gear (17). The locking and positioning mechanism (2) is detachably mounted on the displacement flange (18) by bolts.

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