An automatic switching device for multi-model tooling in a car body welding production line

Abstract

The present invention discloses an automatic switching device for tooling of multiple models in a body welding production line, including a cache storage location, an X-direction track of a transfer system, a tooling storage location, an X-direction transfer trolley of a transfer system, and a transfer trolley drag chain. A cylinder piston is used to push a cylindrical pin in combination with a circular hole for positioning; the wheel group structure and the circular cross-section positioning pin are linear contact rolling friction, which can ensure sufficient deviation correction force and holding force, and reduce friction loss. The positioning method of the roller pin in combination with the long waist hole is supplemented, upgraded and modified; the telescopic transfer mechanism based on the stroke multiplication principle integrates the transfer function of the tooling in the Y-direction storage location into the X-direction transfer trolley, the purpose of which is to save the storage location Y-direction transfer mechanism, greatly reducing the investment cost for the production line; a three-way precision positioning mechanism is newly added to the X-direction transfer trolley to avoid the inaccurate position of the tooling during the X-direction transfer process, which also greatly ensures production safety.

Description

Technical Field

[0001] The invention relates to the technical field of automobile welding, and in particular to an automatic switching device for tooling of multiple vehicle models in a vehicle body welding production line. Background Art

[0002] As the competition in the automobile market becomes increasingly fierce, the pace of automobile product replacement has been accelerated and the replacement cycle has been shortened. Therefore, how to produce updated products and new models in an economical, reasonable, fast and feasible manner has become an urgent practical problem to be solved.

[0003] Among the four major processes of automobile manufacturing, the welding production line is particularly important and plays an important role in the introduction and production of new models. The welding production line is closely related to the changes in product structure. The introduction of new models places more demands on the welding production line. The welding production line needs more changes to have greater flexibility and adaptability to the diversification of new models. For the introduction of new models on the flexible welding production line, in order to make small changes and small investments, and to meet the production needs of various new models and quickly switch production, the automobile welding production line needs to have flexible production capabilities to meet the needs of new model upgrades. Summary of the invention

[0004] The present invention provides an automatic switching device for multi-model tooling in a car body welding production line. The multi-model tooling in the production line can be switched to a working position by using a transfer device to meet the mixed-line production of multiple models.

[0005] The present invention provides the following technical solutions: an automatic tooling switching device for multiple vehicle models in a body welding production line, comprising a buffer storage position, an X-direction track of a transfer system, a tooling storage position, an X-direction transfer trolley of a transfer system, and a transfer trolley drag chain, wherein the buffer storage position is installed on the left side of the X-direction track of the transfer system, the tooling storage position is installed on the right side of the X-direction track of the transfer system, the X-direction transfer trolley of the transfer system is installed on the X-direction track of the transfer system, and the X-direction transfer trolley of the transfer system is located on the X-direction track of the transfer system through the transfer trolley drag chain for X-direction movement, the X-direction track of the transfer system comprises a work position tooling support frame, the X-direction transfer trolley of the transfer system is located on the X-direction track of the transfer system for movement, and the X-direction transfer trolley of the transfer system can be moved to the work position tooling support frame, the end of the work position tooling support frame has a restriction on the movement of the X-direction transfer trolley of the transfer system, and the front end of the X-direction transfer trolley of the transfer system is provided with a transfer system zero position;

[0006] The workstation tooling support frame is located at the top of the X-direction transfer trolley of the transfer system, a secondary transfer assembly is installed on the top of the workstation tooling support frame, the bottom of the secondary transfer assembly is connected to the workstation tooling support frame, the top of the secondary transfer assembly is fixedly installed with the transfer trolley telescopic mechanism X, Y direction precise positioning cylinder latch mechanism, the left side of the secondary transfer assembly is installed with the transfer trolley zero position, the middle part of the transfer trolley zero position is installed with a gas-electric energy quick plug-in mechanism, the left side of the transfer trolley zero position is installed with the transfer trolley X, Y direction guide wheel assembly, the right side of the secondary transfer assembly is installed with a telescopic structure drag chain, and the right side of the secondary transfer assembly is installed with a transfer A Z-direction guide wheel assembly for the transfer trolley, an X-direction transfer trolley support wheel assembly is installed at the front end of the right side of the Z-direction guide wheel assembly of the transfer trolley, a tooling X-direction and Y-direction precision positioning cylinder latch mechanism is installed on the left side of the X-direction transfer trolley support wheel assembly, an X-direction transfer trolley support wheel lubrication mechanism is included on the X-direction transfer trolley support wheel assembly, an X-direction transfer trolley transmission gear automatic lubricating oiler is installed on the right side of the Z-direction guide wheel assembly of the transfer trolley, an X-direction transfer trolley transmission gear lubricating brush is installed at one end of the X-direction transfer trolley transmission gear automatic lubricating oiler, and an X-direction transfer trolley transmission gear lubricating brush is movably installed at the bottom of the X-direction transfer trolley transmission gear lubricating brush;

[0007] The X-axis transfer trolley of the transfer system includes a transfer system transfer structure, and the transfer system transfer structure includes a transfer system linear guide rail, a transfer system drive motor is installed on one side of the transfer system linear guide rail, and a transfer system transmission gear 1 is installed on the output end of the transfer system drive motor, and a transfer system secondary transfer component transmission rack is installed on the transfer system transmission gear 1, and a transfer system transmission rack lubrication system is installed on the transfer system linear guide rail. A transfer system in-position sensor and a transfer system mechanical limit are installed on the front end of the transfer system linear guide rail, and the transfer system in-position sensor is located on one side of the transfer system mechanical limit, and a transfer system guide wheel assembly is installed on the inner side of the front end of the transfer system linear guide rail, and A transferring system anti-overturning guide wheel assembly is installed on the outer side of the transferring system guide wheel assembly, and the transferring system first-level transferring assembly and the transferring system third-level transferring assembly are respectively installed on the outer side of the transferring system linear guide rail, the transferring system first-level transferring assembly is installed with the transferring system guide wheel assembly mechanical zero position, the transferring system first-level transferring assembly is installed with the transferring system first-level transferring assembly transmission rack, the transferring system first-level transferring assembly is installed with the transferring system transmission automatic lubrication system on the outer side of the transferring system first-level transferring assembly, and the transferring system transmission gear 2 and the transferring system transmission gear 3 are installed on the transferring system first-level transferring assembly near the transferring system transmission automatic lubrication system, and the transferring system transmission gear 2 and the transferring system transmission gear 3 are both connected with a transfer drag chain.

[0008] Preferably, the first-level transfer component of the transfer system is a fixed component, the second-level transfer component serves as a force transmission component of the system, and the third-level transfer component of the transfer system serves as a final output end of the system.

[0009] Preferably, a rack is designed at one end of the secondary transfer component, which meshes with a gear connected to the motor to drive the motion component to move, and a coaxially rotating gear set is designed at the other end of the secondary transfer component frame, and the gears are arranged in an up-and-down manner.

[0010] Preferably, the piston of the X and Y-axis precise positioning cylinder latch mechanism of the tooling drives the guide wheel assembly to move up and down in the guide shaft sleeve.

[0011] Preferably, a floating connection piece is designed between the guide wheel assembly and the cylinder, and the cross section of the guide wheel assembly is circular.

[0012] The present invention has the following beneficial effects:

[0013] The multi-model tooling automatic switching device in the body welding production line, based on the existing products, proposes a new tooling translation mechanism from the perspective of cost saving, and is loaded on the transfer platform. At the same time, a secondary positioning structure that requires precise positioning of the working position is added. This reduces the drive transmission components and processing requirements of other parts, and reduces the overall implementation cost when multiple warehouses are used;

[0014] Through modular integration and intelligent control of the transfer platform and storage location, a cylinder-driven circular pin combined with a circular hole is used for positioning, which includes an X- and Y-direction wheel group structure and a Z-direction support structure. X- and Y-direction positioning pins and floating structures are also designed on the X-direction conveyor trolley. The wheel group structure and the circular cross-section positioning pin are linear contact rolling friction, which can ensure sufficient correction force and holding force, and reduce friction loss. The positioning method of the roller pin combined with the long waist hole has been supplemented, upgraded and modified; the telescopic transfer mechanism based on the stroke multiplication principle integrates the transfer function of the tooling in the Y-direction storage location into the X-direction transfer trolley. The purpose is to save the Y-direction transfer mechanism of the storage location and greatly reduce the investment cost of the production line; a three-way precision positioning mechanism has been newly added to the X-direction transfer trolley to avoid inaccurate tooling position during the X-direction transfer process, which also greatly ensures production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the multi-vehicle tooling transfer system of the present invention;

[0016] Figure 2 It is a schematic diagram of the X-axis transfer trolley of the multi-type tooling transfer system of the present invention;

[0017] Figure 3It is a schematic diagram of the transfer structure of the multi-vehicle tooling transfer system of the present invention.

[0018] In the figure: 1. Cache storage position; 2. X-axis track of transfer system; 3. Tool storage position; 4. X-axis transfer trolley of transfer system; 5. Transfer trolley drag chain; 6. Transfer system zero position; 7. Work station tool support frame; 8. Z-axis guide wheel assembly of transfer trolley; 9. X-axis and Y-axis precise positioning cylinder latch mechanism of transfer trolley telescopic mechanism; 10. Zero position of transfer trolley; 11. X-axis and Y-axis guide wheel assembly of transfer trolley; 12. Gas and electric energy quick plug mechanism; 13. Secondary transfer assembly; 14. Telescopic structure drag chain; 15. X-axis and Y-axis precise positioning cylinder latch mechanism of tool; 16. X-axis transfer trolley support wheel assembly; 17. X-axis transfer trolley support wheel lubrication mechanism; 18. X-axis transfer trolley transmission gear; 19. X-axis transfer trolley transmission gear lubrication brush; 20. 1. Automatic lubricating oiler for the transmission gear of the transfer trolley; 21. Linear guide rail of the transfer system; 22. Driving motor of the transfer system; 23. Transmission gear one of the transfer system; 24. The first-level transfer component of the transfer system; 25. Transmission rack of the second-level transfer component of the transfer system; 26. Lubrication system of the transmission rack of the transfer system; 27. In-position sensor of the transfer system; 28. Mechanical limit of the transfer system; 29. ​​Guide wheel assembly of the transfer system; 30. Anti-overturning guide wheel assembly of the transfer system; 31. Mechanical zero position of the guide wheel assembly of the transfer system; 32. Transmission rack of the first-level transfer component of the transfer system; 33. Automatic lubrication system of the transfer system; 34. Transmission gear two of the transfer system; 35. Transmission gear three of the transfer system; 36. Transfer drag chain; 37. The third-level transfer component of the transfer system. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-3, an automatic switching device for tooling of multiple models in a body welding production line, comprising a cache position 1, a transfer system X-direction track 2, a tooling position 3, a transfer system X-direction transfer trolley 4 and a transfer trolley drag chain 5, the cache position 1 is installed on the left side of the transfer system X-direction track 2, the tooling position 3 is installed on the right side of the transfer system X-direction track 2, the transfer system X-direction transfer trolley 4 is installed on the transfer system X-direction track 2, and the transfer system X-direction transfer trolley 4 is located on the transfer system X-direction track 2 through the transfer trolley drag chain 5 for X-direction movement, the transfer system X-direction track 2 includes a work position tooling support frame 7, the transfer system X-direction transfer trolley 4 is located on the transfer system X-direction track 2 and moves, and The X-direction transfer trolley 4 of the transfer system can be moved to the work station tooling support frame 7, and the end of the work station tooling support frame 7 has a restricted movement for the X-direction transfer trolley 4 of the transfer system, and the front end of the X-direction transfer trolley 4 of the transfer system is provided with a transfer system zero position 6; the bottom is the track for the tooling switching and transferring X-direction conveying, followed by the tooling switching and transferring X-direction conveying trolley, the tooling switching and transferring Y-direction transfer telescopic mechanism, and the tooling. A group of cylinder guide positioning systems are designed on the tooling switching and transferring X-direction conveying trolley and the floor frame in the tooling switching and transferring system respectively, and a tooling support device is designed on the floor frame in the tooling switching and transferring system, the purpose is to ensure the repeated positioning accuracy and equipment reliability when the tooling is in place.

[0021] The workstation tooling support frame 7 is located at the top of the X-direction transfer trolley 4 of the transfer system, and a secondary transfer assembly 13 is installed on the top of the workstation tooling support frame 7. The Y-direction telescopic transfer trolley is cleverly integrated on the X-direction conveying trolley. The purpose of this design is to reduce the driving motor in the cache storage position in the system, which greatly saves the cost of the equipment, and the layout is more scientific. The bottom of the secondary transfer assembly 13 is connected to the workstation tooling support frame 7, and the top of the secondary transfer assembly 13 is fixedly installed with the X, Y-direction precise positioning cylinder latch mechanism 9 of the transfer trolley telescopic mechanism, the left side of the secondary transfer assembly 13 is installed with the transfer trolley zero position 10, the middle part of the transfer trolley zero position 10 is installed with a gas-electric energy quick-insertion mechanism 12, the left side of the transfer trolley zero position 10 is installed with the transfer trolley X, Y-direction guide wheel assembly 11, the right side of the secondary transfer assembly 13 is installed with a telescopic structure drag chain 14, and the right side of the secondary transfer assembly 13 is installed with a transfer The Z-direction guide wheel assembly 8 of the transfer trolley is provided with an X-direction transfer trolley supporting wheel assembly 16 at the front end on the right side of the Z-direction guide wheel assembly 8 of the transfer trolley. The left side of the X-direction transfer trolley supporting wheel assembly 16 is provided with a tooling X-direction and Y-direction precision positioning cylinder latch mechanism 15. The piston of the tooling X-direction and Y-direction precision positioning cylinder latch mechanism 15 drives the guide wheel assembly to move up and down in the guide shaft sleeve. A floating connector is designed between the guide wheel assembly and the cylinder. The cross section of the guide wheel assembly is circular. The X-direction transfer trolley supporting wheel assembly 16 includes an X-direction transfer trolley supporting wheel lubrication mechanism 17. The right side of the Z-direction guide wheel assembly 8 of the transfer trolley is provided with an X-direction transfer trolley transmission gear automatic lubrication oiler 20. One end of the X-direction transfer trolley transmission gear automatic lubrication oiler 20 is provided with an X-direction transfer trolley transmission gear lubrication brush 19. The bottom of the X-direction transfer trolley transmission gear lubrication brush 19 is movably provided with an X-direction transfer trolley transmission gear 18.

[0022] A rack is designed at one end of the secondary transfer assembly 13, and the gear meshing with the motor drives the motion assembly to move. At the same time, a coaxially rotating gear set is designed on the other end of the frame of the secondary transfer assembly 13, and the gears are arranged in an up-and-down manner;

[0023] The transfer system X-axis transfer trolley 4 includes a transfer system transfer structure, and the transfer system transfer structure includes a transfer system linear guide 21, a transfer system drive motor 22 is installed on one side of the transfer system linear guide 21, a transfer system transmission gear 1 23 is installed on the output end of the transfer system drive motor 22, a transfer system secondary transfer component transmission rack 25 is installed on the transfer system transmission gear 1 23, a transfer system transmission rack lubrication system 26 is installed on the transfer system linear guide 21, a transfer system in-position sensor 27 and a transfer system mechanical limit 28 are installed on the front end of the transfer system linear guide 21, the transfer system in-position sensor 27 is located on one side of the transfer system mechanical limit 28, a transfer system guide wheel assembly 29 is installed on the inner side of the front end of the transfer system linear guide 21, and the transfer system A transfer system anti-overturning guide wheel assembly 30 is installed on the outer side of the guide wheel assembly 29, and a transfer system first-level transfer assembly 24 and a transfer system third-level transfer assembly 37 are respectively installed on the outer side of the transfer system linear guide rail 21, a transfer system guide wheel assembly mechanical zero position 31 is installed on the transfer system first-level transfer assembly 24, a transfer system first-level transfer assembly transmission rack 32 is installed on the transfer system first-level transfer assembly 24, and a transfer system transmission automatic lubrication system 33 is installed on the outer side of the transfer system first-level transfer assembly 24. A transfer system transmission gear 2 34 and a transfer system transmission gear 3 35 are installed on the transfer system first-level transfer assembly 24 near the transfer system transmission automatic lubrication system 33, and the transfer system transmission gear 2 34 and the transfer system transmission gear 3 35 are both connected with a transfer drag chain 36.

[0024] The first-stage transfer component 24 of the transfer system is a fixed component, the second-stage transfer component 13 is the force transmission component of the system, and the third-stage transfer component 37 of the transfer system is the final output end of the system; the movable pulley and lever arm amplification principle is used, and the short-stroke driving structure is used to amplify the stroke through the telescopic structure. In order to solve the problem of precision in the horizontal arrangement of the movable pulley and the end disturbance of the telescopic transfer fork, a linear guide is added to each telescopic structure, which solves the problem of repeated positioning accuracy and end disturbance of the equipment.

[0025] Working principle: The tooling is placed on the equipment cache position. When the X-axis conveyor trolley brings the finished tooling to the Y-axis alignment with the equipment cache position, the tooling is ready to be switched. The upper end of the Y-axis telescopic transfer trolley runs to the bottom of the tooling in the cache position. After the position sensor confirms, the cylinder piston with the guide shaft on the telescopic transfer fork enters the guide shaft sleeve on the tooling. At this time, the cylinder piston with the guide shaft of the constraint fixture on the X-axis conveyor trolley is disengaged from the guide wheel at the lower end of the tooling, and a group of guide shafts on the telescopic transfer fork extend into the two toolings respectively. When the telescopic transfer trolley starts working, the tooling that needs to be switched is transported to the trolley that can be transported along the X-axis, and the switched tooling is transported to the cache position on the other side of the equipment. The cylinder piston of the constraint tooling on the X-axis conveyor trolley is opened, and the tooling that needs to be switched is constrained to ensure the safety of the equipment. The cylinder piston on the telescopic transfer trolley retracts, the telescopic transfer fork retracts, and the X-axis transfer trolley starts working to transport the tooling to the working position.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic tooling switching device for multiple vehicle types in a vehicle body welding production line, comprising a buffer storage location (1), an X-direction track of a transfer system (2), a tooling storage location (3), an X-direction transfer trolley of a transfer system (4), and a transfer trolley drag chain (5), characterized in that: The buffer storage position (1) is installed on the left side of the transfer system X-direction track (2), the tool storage position (3) is installed on the right side of the transfer system X-direction track (2), the transfer system X-direction transfer trolley (4) is installed on the transfer system X-direction track (2), and the transfer system X-direction transfer trolley (4) is located on the transfer system X-direction track (2) through the transfer trolley drag chain (5) for X-direction movement, the transfer system X-direction track (2) includes a work position tool support frame (7), the transfer system X-direction transfer trolley (4) is located on the transfer system X-direction track (2) for movement, and the transfer system X-direction transfer trolley (4) can be moved to the work position tool support frame (7), the end of the work position tool support frame (7) has a limited movement for the transfer system X-direction transfer trolley (4), and the front end of the transfer system X-direction transfer trolley (4) is provided with a transfer system zero position (6); The workstation tool support frame (7) is located at the top of the X-direction transfer trolley (4) of the transfer system. A secondary transfer assembly (13) is installed on the top of the workstation tool support frame (7). The bottom of the secondary transfer assembly (13) is connected to the workstation tool support frame (7). The top of the secondary transfer assembly (13) is fixedly installed with a transfer trolley telescopic mechanism X and Y-direction precise positioning cylinder latch mechanism (9). The left side of the secondary transfer assembly (13) is installed with a transfer trolley zero position (10). The middle part of the transfer trolley zero position (10) is installed with a gas-electric energy quick plug mechanism (12). The left side of the transfer trolley zero position (10) is installed with a transfer trolley X and Y-direction guide wheel assembly (11). The right side of the secondary transfer assembly (13) is installed with a telescopic structure drag chain (14). The secondary transfer assembly (13) A transfer trolley Z-direction guide wheel assembly (8) is installed on the right side, an X-direction transfer trolley support wheel assembly (16) is installed at the front end of the right side of the transfer trolley Z-direction guide wheel assembly (8), a tool X-direction and Y-direction precision positioning cylinder latch mechanism (15) is installed on the left side of the X-direction transfer trolley support wheel assembly (16), the X-direction transfer trolley support wheel assembly (16) includes an X-direction transfer trolley support wheel lubrication mechanism (17), an X-direction transfer trolley transmission gear automatic lubricating oiler (20) is installed on the right side of the transfer trolley Z-direction guide wheel assembly (8), an X-direction transfer trolley transmission gear lubricating brush (19) is installed at one end of the X-direction transfer trolley transmission gear automatic lubricating oiler (20), and an X-direction transfer trolley transmission gear (18) is movably installed at the bottom of the X-direction transfer trolley transmission gear lubricating brush (19); The transfer system X-axis transfer trolley (4) comprises a transfer system transfer structure, the transfer system transfer structure comprises a transfer system linear guide rail (21), a transfer system drive motor (22) is installed on one side of the transfer system linear guide rail (21), a transfer system transmission gear (23) is installed on the output end of the transfer system drive motor (22), a transfer system secondary transfer component transmission rack (25) is installed on the transfer system transmission gear (23), a transfer system transmission rack lubrication system (26) is installed on the transfer system linear guide rail (21), a transfer system in-position sensor (27) and a transfer system mechanical limit (28) are installed on the front end of the transfer system linear guide rail (21), the transfer system in-position sensor (27) is located on one side of the transfer system mechanical limit (28), a transfer system guide wheel assembly (29) is installed on the inner side of the front end of the transfer system linear guide rail (21), and the transfer system The outer side of the system guide wheel assembly (29) is equipped with a transfer system anti-overturning guide wheel assembly (30); the outer side of the transfer system linear guide rail (21) is equipped with a transfer system first-level transfer assembly (24) and a transfer system third-level transfer assembly (37); the transfer system first-level transfer assembly (24) is equipped with a transfer system guide wheel assembly mechanical zero position (31); the transfer system first-level transfer assembly (24) is equipped with a transfer system first-level transfer assembly transmission rack (32); the transfer system first-level transfer assembly (24) is equipped with a transfer system transmission automatic lubrication system (33) on the outer side of the transfer system first-level transfer assembly (24); the transfer system first-level transfer assembly (24) is located near the transfer system transmission automatic lubrication system (33) and is equipped with a transfer system transmission gear 2 (34) and a transfer system transmission gear 3 (35); the transfer system transmission gear 2 (34) and the transfer system transmission gear 3 (35) are both connected with a transfer drag chain (36).

2. The automatic switching device for multiple vehicle types in a vehicle body welding production line according to claim 1 is characterized in that: The primary transfer component (24) of the transfer system is a fixed component, the secondary transfer component (13) serves as a force transmission component of the system, and the tertiary transfer component (37) of the transfer system serves as a final output end of the system.

3. The automatic switching device for multiple vehicle types in a vehicle body welding production line according to claim 1 is characterized in that: One end of the secondary transfer component (13) is designed with a rack, which meshes with a gear connected to the motor to drive the motion component to move. At the same time, the other end of the frame of the secondary transfer component (13) is designed with a coaxially rotating gear set, and the gears are arranged in an up-and-down manner.

4. The automatic switching device for multiple vehicle types of tooling in a vehicle body welding production line according to claim 1 is characterized in that: The piston of the X- and Y-axis precise positioning cylinder latch mechanism (15) of the tooling drives the guide wheel assembly to move up and down in the guide shaft sleeve.

5. The automatic switching device for multiple vehicle types in a vehicle body welding production line according to claim 1 is characterized in that: A floating connection piece is designed between the guide wheel assembly and the cylinder, and the cross section of the guide wheel assembly is circular.

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