Flexible quick-change mechanism for welding line clamp

Abstract

The utility model relates to the technical field of welding line clamps, in particular to a welding line clamp flexible quick-change mechanism which is provided with a welding frame, and a plurality of supporting and guiding mechanisms are installed on longitudinal beams on the left side and the right side of the welding frame respectively and used for supporting and guiding welding clamps placed on a switching trolley. The welding frame is further provided with a clamp positioning hole used for positioning a welding clamp. A trolley limiting mechanism is arranged at the front end of the welding frame and used for being matched with a limiting mechanism on a welding line rotary table. A first clamp mechanism and a second clamp mechanism are fixedly arranged at the upper end of the welding frame. The first clamp mechanism is used for fixing the switching trolley and the welding clamp. The second clamp mechanism is used for fixing the switching trolley and the welding line rotary table. By arranging the multiple guide mechanisms, the multiple limiting mechanisms and the multiple clamp mechanisms, the clamps on the rotary table are transferred to the clamp flexible quick-change mechanism in a manual pushing mode, the clamps are transferred to a specific clamp library through the quick-change mechanism, and therefore quick switching of the clamps is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding line clamps, in particular to a flexible quick-change mechanism for welding line clamps. Background Art

[0002] Flexible production technology for body-in-white (BIW) welding lines is relatively mature, enabling flexible production of two or four different vehicle models. However, flexible production of multiple models has yet to be successfully implemented. Currently, OEMs rely on turntables to rotate and switch between different models, or use fixture storage to switch between fixtures. However, both approaches present challenges. Turntable solutions cannot accommodate a wider range of vehicle types, while storage solutions theoretically allow for flexible production of a wider range of models, but the cost is prohibitive and neither approach addresses the limited flexibility required for a wider range of models.

[0003] Implementing flexible production within the body-in-white welding line can significantly reduce production costs for automakers. Theoretically, the more models a line can produce, the lower the production costs. Flexible production is already relatively mature in existing technology, but existing flexible production solutions using turntables limit the number of models that can be accommodated within the line, typically between two and four. Another option is to use a fixture switching library for flexible production, but due to cost and other factors, this only allows for two to four models, severely impacting the utilization efficiency of the welding line and increasing vehicle manufacturing costs. Utility Model Content

[0004] The purpose of the utility model is to provide a flexible quick-change mechanism for welding line clamps, aiming to solve the problem that the line body cannot be integrated into more car models or the integration cost is too high, improve the use efficiency of the line body, and reduce the cost of car manufacturing.

[0005] To this end, the utility model proposes a flexible quick-changing mechanism for welding line fixtures, which is a quick-switching trolley with a welding frame, and a number of support and guide mechanisms are respectively installed on the longitudinal beams on the left and right sides of the welding frame, for supporting and guiding the welding fixture placed on the switching trolley; the welding frame is also provided with a fixture positioning hole for positioning the welding fixture; the front end of the welding frame is provided with a trolley limiting mechanism for cooperating with the limiting mechanism on the welding line turntable; the upper end of the welding frame is fixed with a clamp mechanism 1 and a clamp mechanism 2; the clamp mechanism 1 is used to fix the switching trolley and the welding fixture; the clamp mechanism 2 is used to fix the switching trolley and the welding line turntable.

[0006] As a preferred technical solution of the present application, the support and guide mechanism includes a support wheel and a guide wheel 1. The axis of the support wheel is on the horizontal plane. The support wheel is used to support the welding fixture placed on the switching trolley. The axis of the guide wheel 1 is parallel to the vertical direction, which is convenient for cooperation with the guide mechanism at the bottom of the welding fixture.

[0007] As a preferred technical solution of the present application, a trolley guide mechanism is further provided at the front end of the welding frame for cooperating with the guide mechanism on the turntable of the welding line.

[0008] As a preferred technical solution of the present application, the trolley guide mechanism includes a front protruding bracket and a second guide wheel, and the second guide wheel is installed at the front end of the front protruding bracket.

[0009] As a preferred technical solution of the present application, the trolley limiting mechanism is a wedge-shaped block structure, which cooperates with the limiting mechanism on the turntable of the welding line.

[0010] As a preferred technical solution of the present application, a forklift guide groove is provided at the bottom of the welding frame.

[0011] As a preferred technical solution of the present application, universal wheels and directional wheels are installed at the bottom of the welding frame.

[0012] As a preferred technical solution of the present application, a traction pin mechanism is further provided at the front end of the welding frame.

[0013] As a preferred technical solution of the present application, a traction series frame is provided at the rear end of the welding frame.

[0014] As a preferred technical solution of the present application, a handrail is further provided at the rear end of the welding frame.

[0015] The flexible quick-change mechanism for welding line fixtures provided by this utility model utilizes multiple guide mechanisms, limit mechanisms, and clamping mechanisms. The fixture on the turntable is manually pushed onto the flexible quick-change mechanism, which then transfers the fixture to a specific fixture library, thereby enabling fixture switching. This technology enables fixture switching for multiple vehicle models, is cost-effective, and can significantly save costs.

[0016] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0018] Figure 1 This is a structural diagram of the flexible quick-change mechanism of the welding line fixture of the present invention;

[0019] Figure 2 This is a structural diagram of the support and guide mechanism in the flexible quick-change mechanism of the welding line fixture of the present invention;

[0020] Figure 3 This is a structural diagram of the trolley guide mechanism in the flexible quick-change mechanism of the welding line fixture of the present invention;

[0021] Figure 4 This is a structural diagram of the fixture positioning hole in the flexible quick-change mechanism of the welding line fixture of the present invention;

[0022] Description of Reference Numerals

[0023] 1. Welding frame; 2. Support and guide mechanism; 3. Trolley guide mechanism; 4. Handrail; 5. Clamp mechanism 1; 6. Clamp mechanism 2; 7. Clamp positioning hole; 8. Trolley limit mechanism; 9. Forklift guide groove; 10. Towing pin mechanism; 11. Towing tandem frame; 21. Support wheel; 22. Guide wheel 1; 31. Front protrusion bracket; 32. Guide wheel 2. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] like Figures 1 to 4 As shown, the basic structure of the flexible quick-changing mechanism of the welding line clamp of the utility model is a quick-switching trolley, which includes a welding frame 1, a support and guide mechanism 2, a trolley guide mechanism 3, an armrest 4, a clamp mechanism 1 5, a clamp mechanism 2 6, a clamp positioning hole 7, a trolley limit mechanism 8, a forklift guide groove 9, a traction pin mechanism 10 and a traction series frame 11.

[0026] Specifically, if Figure 2 As shown, the welding frame 1 is a rectangular frame welded from a plurality of square steels. A plurality of support and guide mechanisms 2 are respectively installed on the longitudinal beams on the left and right sides of the welding frame 1, and four sets of support and guide mechanisms 2 are set on each longitudinal beam.

[0027] The support and guide mechanism 2 includes a support wheel 21 and a guide wheel 22. The axis of support wheel 21 is horizontal and supports the welding fixture placed on the switching carriage. The axis of guide wheel 22 is parallel to the vertical direction, facilitating cooperation with the guide mechanism at the bottom of the fixture to enable rapid forward and backward sliding of the welding fixture. The same support and guide mechanism 2 is also provided on the welding line turntable, allowing the welding fixture to slide quickly onto the turntable, achieving the purpose of rapid replacement of welding fixtures.

[0028] The welding frame 1 is provided with a fixture positioning hole 7. When the welding fixture and the switching trolley are in place, a pin is inserted into the fixture positioning hole 7 to keep the welding fixture and the trolley in position to prevent the fixture from accidentally falling.

[0029] like Figure 3 、 Figure 4 As shown, a clamping mechanism 1 5 is fixed on the upper left and right sides of the rear crossbeam of the welding frame 1, and a clamping mechanism 2 6 is fixed on the upper left and right sides of the front crossbeam of the welding frame 1; the clamping mechanism 1 5 is used to fix the switching trolley and the welding fixture; the manual clamping mechanism 2 6 fixes the switching trolley and the turntable.

[0030] like Figure 3 As shown, a pair of trolley guide mechanisms 3 are provided on the front side of the front cross beam of the welding frame 1. The trolley guide mechanism 3 includes a front protruding bracket 31 and a second guide wheel 32. The second guide wheel 32 is installed at the front end of the front protruding bracket 31. The trolley guide mechanism 3 cooperates with the guide mechanism on the turntable of the welding line. A pair of trolley limiting mechanisms 8 are also provided at the front end of the front cross beam of the welding frame 1. The trolley limiting mechanism 8 is a wedge block structure, which cooperates with the limiting mechanism on the turntable of the welding line. It has a guiding effect to a certain extent, which facilitates the accurate positioning of the turntable and the switching trolley.

[0031] like Figure 1 As shown, a pair of forklift guide grooves 9 are provided at the bottom of the welding frame 1. The forklift guide grooves 9 cooperate with the fork claws of the hydraulic forklift. The hydraulic forklift determines the relative position of the switching trolley and the turntable through the trolley guide mechanism 3, and adjusts the relative height of the welding fixture and the switching trolley through the hydraulic forklift.

[0032] At the same time, the bottom of the welding frame 1 is equipped with universal wheels and fixed wheels. The front end of the welding frame 1 is also equipped with a traction pin mechanism 10. The rear end of the welding frame 1 is equipped with a traction tandem frame 11. Through the traction pin mechanism 10 and the tractor, the switching trolley equipped with the welding fixture can be sent to the storage area for storage. The function of the traction tandem frame 11 is to connect two adjacent switching trolleys in series, and then a tractor can simultaneously drive multiple switching trolleys to move to the set position. In addition, the rear end of the welding frame 1 is also equipped with a handrail 4, which is used to manually adjust the position of the switching trolley.

[0033] The working principle and working process of the flexible quick-change mechanism of the welding line clamp of the present invention are briefly described below.

[0034] When the welding fixture needs to be switched, the switching trolley is pulled to the working position, and the hydraulic forklift is aligned with the forklift guide groove 9 on the switching trolley, and the hydraulic forklift is pushed into place. The hydraulic forklift is then pushed through the switching trolley guide mechanism 3 to determine the relative position of the switching trolley and the turntable, and the relative height of the fixture and the switching trolley is adjusted by the hydraulic trolley, and then the trolley limit mechanism 8 is used to limit it into place.

[0035] After the switching trolley is in place, the switching trolley and the turntable are fixed by the manual clamp mechanism 2 6, the mechanism of locking the fixture on the turntable is opened, and the fixture is manually pushed onto the switching trolley. The position of the fixture is determined through the fixture positioning hole 7, and then the welding fixture is fixed by the manual clamp mechanism 1 5.

[0036] After the fixation is completed, the manual clamp mechanism 2 6 is opened, the hydraulic forklift is pulled to take the switching trolley away from the working position, and the fixture is sent to the storage area for storage through the traction pin mechanism 10. Then the fixture to be used is switched to the turntable in the above manner to realize the switching of multiple types of fixtures.

[0037] Switching the trolley mechanism can realize arbitrary switching of more car models, and it has a low cost and can meet the flexible production needs of the welding line. In theory, it can greatly increase the number of car models that can be integrated into the production of a line.

[0038] The innovation of this application is that it can meet the flexible production of more car models while the flexible line itself can only accommodate a limited number of car models. In theory, as long as the white body welding process does not change much, this invention can complete the welding of all car models based on only the manufacture of new fixtures, greatly improving the utilization efficiency of the line.

[0039] Considering the cost, this design only requires the use of a turntable mechanism with switchable fixtures when the line is initially designed. When switching is required, the switching trolley can be made to complete the switching of fixtures. This can significantly reduce the cost for new or modified lines.

[0040] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A flexible quick-change mechanism for welding line fixtures, characterized by: A quick switching trolley with a welding frame (1) is provided, wherein a plurality of supporting and guiding mechanisms (2) are respectively installed on the longitudinal beams on the left and right sides of the welding frame (1) for supporting and guiding the welding fixture placed on the switching trolley; The welding frame (1) is also provided with a fixture positioning hole (7) for positioning the welding fixture; the front end of the welding frame (1) is provided with a trolley limiting mechanism (8) for cooperating with the limiting mechanism on the welding line turntable; A clamp mechanism 1 (5) and a clamp mechanism 2 (6) are fixedly provided on the upper end of the welding frame (1); the clamp mechanism 1 (5) is used to fix the switching trolley and the welding fixture; the clamp mechanism 2 (6) is used to fix the switching trolley and the welding line turntable.

2. The flexible quick-change mechanism for welding line fixtures according to claim 1, characterized in that: The support and guide mechanism (2) comprises a support wheel (21) and a guide wheel (22). The axis of the support wheel (21) is on a horizontal plane. The support wheel (21) is used to support a welding fixture placed on a switching trolley. The axis of the guide wheel (22) is parallel to the vertical direction, so as to facilitate cooperation with the guide mechanism at the bottom of the welding fixture.

3. The flexible quick-change mechanism for welding line fixtures according to claim 1, characterized in that: The front end of the welding frame (1) is also provided with a trolley guide mechanism (3) for cooperating with the guide mechanism on the turntable of the welding line.

4. The flexible quick-change mechanism for welding line fixtures according to claim 3, characterized in that: The trolley guide mechanism (3) comprises a front protruding bracket (31) and a second guide wheel (32), wherein the second guide wheel (32) is mounted on the front end of the front protruding bracket (31).

5. The flexible quick-change mechanism for welding line fixtures according to claim 1, characterized in that: The trolley limiting mechanism (8) is a wedge-shaped block structure, which cooperates with the limiting mechanism on the welding line turntable.

6. The flexible quick-change mechanism for welding line fixtures according to claim 1, characterized in that: A forklift guide groove (9) is provided at the bottom of the welding frame (1).

7. The flexible quick-change mechanism for welding line fixtures according to claim 1, characterized in that: Universal wheels and directional wheels are installed at the bottom of the welding frame (1).

8. The flexible quick-change mechanism for welding line fixtures according to claim 7, characterized in that: The front end of the welding frame (1) is also provided with a traction pin mechanism (10).

9. The flexible quick-change mechanism for welding line fixtures according to claim 8, characterized in that: The rear end of the welding frame (1) is provided with a traction series frame (11).

10. The flexible quick-change mechanism for welding line fixtures according to claim 1, characterized in that: The rear end of the welding frame (1) is also provided with a handrail (4).

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