A two-stage welding tool slide switching mechanism

Abstract

The utility model relates to a two -segment type welding tool sliding table switching mechanism is provided in the one side of sliding station switching track, is used for driving welding fixture fixed plate, the mechanism includes fixed base and mobile platform, the mobile platform movable installation is in fixed base, the stroke of mobile platform is equal to the half of welding fixture fixed plate along the mobile platform moving direction length, the upper end of fixed base is equipped with sliding guide unit, welding fixture fixed plate connects sliding guide unit, mobile platform detachable type connection welding fixture fixed plate. Compared with prior art, the utility model has the advantages of small floor space, positioning accuracy is high.

Description

Technical Field

[0001] This utility model relates to the field of bicycle production line devices, and in particular to a two-stage welding fixture slide switching mechanism. Background Technology

[0002] This slide-table switching mechanism is used in the body-in-white welding workshop of an automotive OEM. It is primarily used for the automatic switching of fixtures between different vehicle platforms. The mechanism is fixed to the ground with high-strength chemical bolts and, by cooperating with different body-in-white fixtures, achieves high-speed automatic switching. This reduces the design complexity of the fixtures and improves the flexibility of the welding workshop line.

[0003] Currently, conventional slide table switching mechanisms on the market employ a single, long-stroke motion. This means the motor continuously drives the fixture base from its storage location to the switching trolley of the slide table switching mechanism. This motion mode is limited by the frame of the switching trolley, requiring the drag point to be close to the edge of the fixture to ensure a safe distance from the trolley frame. Furthermore, given the current requirements of OEMs for low footprint and high flexibility, the large footprint of conventional slide table switching mechanisms increases the difficulty for OEMs in planning flexible production lines. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, which has a long switching track and a large footprint, and to provide a two-stage welding fixture slide switching mechanism.

[0005] The objective of this utility model can be achieved through the following technical solutions: A two-stage welding fixture slide switching mechanism is provided on one side of the slide station switching track for driving the welding fixture fixing plate. The mechanism includes a fixed base and a moving platform. The moving platform is movably installed in the fixed base, and the stroke of the moving platform is equal to half the length of the welding fixture fixing plate along the moving direction of the moving platform. The upper end of the fixed base is provided with a sliding guide unit, the welding fixture fixing plate is connected to the sliding guide unit, and the moving platform is detachably connected to the welding fixture fixing plate.

[0006] Preferably, the mobile platform is provided with a connecting telescopic pin, and the welding fixture fixing plate is provided with a first connecting hole and a second connecting hole corresponding to the connecting telescopic pin on the side near the mobile platform; The first connecting hole is located at one end of the welding fixture fixing plate near the moving platform, and the second connecting hole is located at the center of the welding fixture fixing plate; the straight line containing the first connecting hole and the second connecting hole is parallel to the moving direction of the moving platform, and the distance between them is equal to the travel of the moving platform.

[0007] Preferably, the fixed base is provided with a first-section clamp telescopic pin on one side, and the welding clamp fixing plate is provided with a first limiting hole and a second limiting hole corresponding to the first-section clamp telescopic pin; the first-section clamp telescopic pin is located at the center position on one side of the fixed base; The first limiting hole is located at one end of the welding fixture fixing plate near the moving platform, and the second limiting hole is located at the center of the welding fixture fixing plate. The straight line containing the first limiting hole and the second limiting hole is parallel to the moving direction of the moving platform, and the distance between them is equal to the travel of the moving platform.

[0008] Preferably, a sensing metal component is provided on one side of the mobile platform, and an initial position sensor and a working position sensor are fixed on the side of the fixed base near the sensing metal component. The initial position sensor is located at the initial position of the mobile platform's travel, and the working position sensor is located at the end position of the mobile platform's travel; the distance between the initial position sensor and the working position sensor is equal to the travel distance of the mobile platform.

[0009] Preferably, both the initial position sensor and the working position sensor are inductive proximity switches.

[0010] Preferably, when the initial position sensor is triggered, the connecting telescopic pin extends and the first segment clamp telescopic pin retracts; when the working position sensor is triggered, the connecting telescopic pin retracts and the first segment clamp telescopic pin extends.

[0011] Preferably, the sliding guide unit includes multiple pulley groups, each pulley group being symmetrically fixed on both sides of the fixed base, and the welding fixture fixing plate moving along the pulley groups.

[0012] Preferably, the pulley assembly includes a mounting base and a first roller, a second roller, and a third roller rotatably fixed on the mounting base; the rotation center axes of the first roller and the second roller are parallel to each other and located in the same horizontal plane, the first roller and the second roller are located on both sides of the mounting base and both abut against the bottom surface of the welding fixture fixing plate; the rotation center axis of the third roller is perpendicular to the horizontal plane, and the outer circle of the third roller abuts against the side surface of the welding fixture fixing plate.

[0013] Preferably, the fixed base is fixed with a positioning scale at the initial position of the mobile platform, and a positioning pointer is installed on the side of the mobile platform close to the positioning scale.

[0014] Preferably, the mobile platform is provided with an elastic contact protection component on the side near the sliding table station switching track.

[0015] Compared with the prior art, the present invention has the following advantages: (1) This solution sets the stroke of the mobile platform to half the length of the welding fixture fixing plate, and the mobile platform moves twice during its full stroke to fully load or unload the welding fixture fixing plate. The two-stage sliding table switching structure reduces the required track length of the mobile platform, reduces the maintenance cost of the main engine manufacturer, greatly reduces the overall footprint of the structure, occupies less space, is more flexible in use, and has a wider range of applications.

[0016] (2) This solution uses a voltage proximity sensor between the moving platform and the fixed base to perform high-precision positioning of the fixture platform, ensuring the position accuracy of the secondary drive of the moving platform and the final position of the switching trolley, thereby improving the accuracy and reliability of the fixture platform movement. Attached Figure Description

[0017] Figure 1 A schematic diagram of the welding fixture slide switching mechanism provided by this utility model; Figure 2 A schematic diagram of the overall switching structure provided by this utility model; Figure 3 A top view of the welding fixture fixing plate provided by this utility model; Figure 4 A top view of the mobile platform provided by this utility model; Figure 5 The initial position of the slide table for switching the first segment of the stroke provided by this utility model; Figure 6 The slide table provided by this utility model is used to switch the end position of the first segment of the stroke; Figure 7 The initial position of the slide table for switching the second segment of the stroke provided by this utility model; Figure 8 The slide table provided by this utility model is used to switch the end position of the second segment of the stroke; In the diagram: 1. Slide table station switching track; 2. Welding fixture fixing plate; 3. Fixed base; 4. Moving platform; 5. Pulley block; 21. First connecting hole; 22. Second connecting hole; 23. First limiting hole; 24. Second limiting hole; 31. Initial position sensor; 32. Working position sensor; 33. First section fixture telescopic pin; 41. Connecting telescopic pin; 51. Mounting base; 52. First roller; 53. Second roller; 54. Third roller. Detailed Implementation

[0018] 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] Example 1 like Figures 1 to 4As shown, this embodiment provides a two-section welding fixture slide switching mechanism, which is set on one side of the slide station switching track 1 and is used to drive the welding fixture fixing plate 2. The mechanism is characterized by including a fixed base 3 and a moving platform 4; the moving platform 4 is movably installed in the fixed base 3, and the stroke of the moving platform 4 is equal to half the length of the welding fixture fixing plate 2 along the moving direction of the moving platform 4; the upper end of the fixed base 3 is provided with a sliding guide unit, the welding fixture fixing plate 2 is connected to the sliding guide unit, and the moving platform 4 is detachably connected to the welding fixture fixing plate 2.

[0025] After the mobile platform 4 is connected to the welding fixture fixing plate 2, it drives the welding fixture fixing plate 2 to move along the sliding guide unit. After the mobile platform 4 has traveled a full stroke, it is reset with the welding fixture fixing plate 2 and reconnects to the welding fixture fixing plate 2, thus driving the welding fixture fixing plate 2 to move, thereby completing the loading or unloading of the welding fixture fixing plate 2.

[0026] By setting the stroke of the mobile platform 4 to half the length of the welding fixture fixing plate 2, the mobile platform moves twice during its full stroke to completely load or unload the welding fixture fixing plate 2. This two-stage sliding table switching structure reduces the required track length of the mobile platform, lowers the maintenance costs for the OEM, significantly reduces the overall footprint, occupies less space, and offers greater flexibility and wider applicability.

[0027] In a preferred embodiment, the mobile platform 4 is provided with a connecting telescopic pin 41, and the welding fixture fixing plate 2 is provided with a first connecting hole 21 and a second connecting hole 22 corresponding to the connecting telescopic pin 41 on the side near the mobile platform. The first connecting hole 21 is located at one end of the welding fixture fixing plate 2 near the moving platform 4, and the second connecting hole 22 is located at the center of the welding fixture fixing plate 2; the straight line containing the first connecting hole 21 and the second connecting hole 22 is parallel to the moving direction of the moving platform 4, and the distance between them is equal to the travel of the moving platform 4.

[0028] Furthermore, a first-section clamp telescopic pin 33 is provided on one side of the fixed base 3, and a first limiting hole 23 and a second limiting hole 24 corresponding to the first-section clamp telescopic pin 33 are provided on the welding clamp fixing plate 2; the first-section clamp telescopic pin 33 is located at the center position on one side of the fixed base 3. The first limiting hole 23 is located at one end of the welding fixture fixing plate 2 near the moving platform 4, and the second limiting hole 24 is located at the center of the welding fixture fixing plate 2. The straight line containing the first limiting hole 23 and the second limiting hole 24 is parallel to the moving direction of the moving platform 4, and the distance between them is equal to the stroke of the moving platform 4.

[0029] In this embodiment, a sensing metal part is provided on one side of the mobile platform 4, and an initial position sensor 31 and a working position sensor 32 are fixed on the side of the fixed base 3 near the sensing metal part. The initial position sensor 31 is located at the initial position of the travel of the moving platform 4, and the working position sensor 32 is located at the end position of the travel of the moving platform 4; the distance between the initial position sensor 31 and the working position sensor 32 is equal to the travel of the moving platform 4.

[0030] Furthermore, when the initial position sensor 31 is triggered, the connecting telescopic pin 41 extends and the first section of the clamp telescopic pin 33 retracts; when the working position sensor 32 is triggered, the connecting telescopic pin 41 retracts and the first section of the clamp telescopic pin 33 extends.

[0031] like Figures 5 to 8 As shown, taking the conveying of the welding fixture fixing plate 2 to the slide table switching track 1 as an example, in the first stroke, the connecting telescopic pin 41 pushes out and inserts into the second connecting hole 22 of the welding fixture fixing plate 2, and the moving platform 4 drives the welding fixture fixing plate 2 forward. Until the working position sensor 32 is triggered, the moving platform 4 stops, the connecting telescopic pin 41 retracts and disengages from the second connecting hole 22, and at the same time, the first clamp telescopic pin 33 extends and inserts into the first limiting hole 23. The moving platform 4 resets until the initial position sensor 31 is triggered, the connecting telescopic pin 41 pushes out and inserts into the first connecting hole 21 of the welding fixture fixing plate 2, the first clamp telescopic pin 33 retracts and disengages from the first limiting hole 23, the moving platform 4 moves forward until the working position sensor 32 is triggered, the moving platform completes two strokes, the connecting telescopic pin 41 retracts, and the welding fixture fixing plate 2 is conveyed to the slide table switching trolley of the slide table switching track, completing one cycle of two-stage conveying. The process of switching the welding fixture fixing plate 2 from the slide table to the track 1 is reversed. After the welding fixture fixing plate 2 is removed, it can be fixed by the first section of the fixture telescopic pin 33 in conjunction with the second limiting hole 24.

[0032] The high-precision position sensor positions the fixture during its movement, achieving a positioning accuracy of ±0.1mm. Depending on the tooling, the servo motor's moving axis meets the requirements, ensuring a single-positioning accuracy of less than 0.1mm and a repeatability of less than 0.2mm. Due to optimized motor travel, the overall footprint of the slide table switching mechanism is significantly reduced. This low-footprint slide table switching mechanism provides an efficient solution for enterprise production, greatly reducing space occupancy compared to similar products on the market while maintaining the required accuracy. This slide table switching mechanism offers a small footprint, high precision, and improves workshop flexibility, production efficiency, and work productivity.

[0033] In this embodiment, both the initial position sensor 31 and the working position sensor 32 are inductive proximity switches. The model of the initial position sensor 31 and the working position sensor 32 can be NI50U-CK40-AP6X2-H1141. The function of the inductive proximity switch is to improve the accuracy of the single movement stroke of the moving platform and ensure the positioning accuracy between the welding fixture fixing plate and the moving platform during two-stage movement. Therefore, other types of sensors, such as photoelectric sensors or displacement sensors, can also be used.

[0034] In a preferred embodiment, the sliding guide unit includes multiple pulley groups 5, each pulley group 5 is symmetrically fixed on both sides of the fixed base 3, and the welding fixture fixing plate 2 moves along the pulley group 5.

[0035] In this embodiment, the pulley block includes a mounting base 51 and a first roller 52, a second roller 53, and a third roller 54 rotatably fixed on the mounting base 51. The rotation center axes of the first roller 52 and the second roller 53 are parallel to each other and located in the same horizontal plane. The first roller 52 and the second roller 53 are located on both sides of the mounting base 51 and both abut against the bottom surface of the welding fixture fixing plate 2. The rotation center axis of the third roller 54 is perpendicular to the horizontal plane, and the outer circle of the third roller 54 abuts against the side surface of the welding fixture fixing plate 2.

[0036] The welding fixture fixing plate 2 is supported by the first roller 52 and the second roller 53, and the welding fixture fixing plate 2 is limited by the auxiliary third roller 54, thereby improving the stability and reliability of the transfer of the welding fixture fixing plate 2.

[0037] In this embodiment, a positioning scale is fixed to the initial position of the moving platform 4 on the fixed base 2, and a positioning pointer is installed on the side of the moving platform 4 near the positioning scale. The position of the moving platform can be reset and corrected by the relationship between the positioning pointer and the positioning scale, ensuring the accuracy of the moving platform's position.

[0038] In this embodiment, the mobile platform 4 is provided with an elastic contact protection component on the side near the sliding table switching track 1. This elastic contact protection component, made of elastic materials such as rubber, protects the movement of the mobile platform from impacts that could affect its positional accuracy.

[0039] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A two-section welding fixture slide switching mechanism, disposed on one side of the slide station switching track (1), for driving the welding fixture fixing plate (2), characterized in that, The mechanism includes a fixed base (3) and a moving platform (4); the moving platform (4) is movably installed in the fixed base (3), and the stroke of the moving platform (4) is equal to half the length of the welding fixture fixing plate (2) along the moving direction of the moving platform (4); the upper end of the fixed base (3) is provided with a sliding guide unit, the welding fixture fixing plate (2) is connected to the sliding guide unit, and the moving platform (4) is detachably connected to the welding fixture fixing plate (2).

2. The two-stage welding fixture slide switching mechanism according to claim 1, characterized in that, The mobile platform (4) is provided with a connecting telescopic pin (41), and the welding fixture fixing plate (2) is provided with a first connecting hole (21) and a second connecting hole (22) corresponding to the connecting telescopic pin (41) on the side near the mobile platform. The first connecting hole (21) is located at one end of the welding fixture fixing plate (2) near the moving platform (4), and the second connecting hole (22) is located at the center of the welding fixture fixing plate (2); the straight line where the first connecting hole (21) and the second connecting hole (22) are located is parallel to the moving direction of the moving platform (4), and the distance between them is equal to the stroke of the moving platform (4).

3. The two-stage welding fixture slide switching mechanism according to claim 2, characterized in that, The fixed base (3) has a first-section clamp telescopic pin (33) on one side, and the welding clamp fixing plate (2) has a first limiting hole (23) and a second limiting hole (24) corresponding to the first-section clamp telescopic pin (33); the first-section clamp telescopic pin (33) is located at the center of one side of the fixed base (3). The first limiting hole (23) is located at one end of the welding fixture fixing plate (2) near the moving platform (4), and the second limiting hole (24) is located at the center of the welding fixture fixing plate (2). The straight line containing the first limiting hole (23) and the second limiting hole (24) is parallel to the moving direction of the moving platform (4), and the distance between them is equal to the stroke of the moving platform (4).

4. The two-stage welding fixture slide switching mechanism according to claim 3, characterized in that, The mobile platform (4) is provided with a sensing metal part on one side, and the fixed base (3) is fixed with an initial position sensor (31) and a working position sensor (32) on the side near the sensing metal part. The initial position sensor (31) is located at the initial position of the travel of the moving platform (4), and the working position sensor (32) is located at the end position of the travel of the moving platform (4); the distance between the initial position sensor (31) and the working position sensor (32) is equal to the travel of the moving platform (4).

5. The two-stage welding fixture slide switching mechanism according to claim 4, characterized in that, Both the initial position sensor (31) and the working position sensor (32) are inductive proximity switches.

6. The two-stage welding fixture slide switching mechanism according to claim 4, characterized in that, When the initial position sensor (31) is triggered, the connecting telescopic pin (41) extends and the first segment clamp telescopic pin (33) retracts; when the working position sensor (32) is triggered, the connecting telescopic pin (41) retracts and the first segment clamp telescopic pin (33) extends.

7. The two-stage welding fixture slide switching mechanism according to claim 1, characterized in that, The sliding guide unit includes multiple pulley groups (5), each pulley group (5) is symmetrically fixed on both sides of the fixed base (3), and the welding fixture fixing plate (2) moves along the pulley group (5).

8. A two-stage welding fixture slide switching mechanism according to claim 7, characterized in that, The pulley assembly includes a mounting base (51) and a first roller (52), a second roller (53), and a third roller (54) rotatably fixed on the mounting base (51). The rotation center axes of the first roller (52) and the second roller (53) are parallel to each other and located in the same horizontal plane. The first roller (52) and the second roller (53) are located on both sides of the mounting base (51) and both abut against the bottom surface of the welding fixture fixing plate (2). The rotation center axis of the third roller (54) is perpendicular to the horizontal plane, and the outer circle of the third roller (54) abuts against the side surface of the welding fixture fixing plate (2).

9. A two-stage welding fixture slide switching mechanism according to claim 1, characterized in that, The fixed base (3) has a positioning scale fixed at the initial position of the moving platform (4), and the moving platform (4) has a positioning pointer installed on the side close to the positioning scale.

10. A two-stage welding fixture slide switching mechanism according to claim 1, characterized in that, The mobile platform (4) is provided with an elastic contact protection component on the side near the sliding table station switching track (1).

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