Flexible switching positioning tool for automobile welding bottom plate production line

Abstract

The utility model provides a flexible switching positioning tool for an automobile welding bottom plate production line, which comprises a cam divider mounting seat, and a cam divider is mounted above the cam divider mounting seat. The cam divider is provided with an input shaft, a first mounting face, a positioning shaft, a second side mounting face, an output shaft, a third mounting face, a fourth mounting face, a fifth mounting face, a sixth mounting face and a seventh mounting face, the seventh mounting face is fixed to the upper end face of the cam divider mounting base, a rotating disc is mounted on the first mounting face and positioned to the outer diameter of the positioning shaft, and the output shaft is fixed to the third mounting face. And a positioning mechanism is mounted on the turntable, and a speed reducing motor is assembled on the mounting surface IV. The device has the beneficial effects that the cam divider is adopted to carry out flexible equal-division switching, the driving can be carried out only by a common motor, the vehicle type and the position relation are controlled through a sensor, the repeated positioning precision can be ensured to be 0.015 mm, and the accuracy of the positioning mechanism is ensured to be 0.015 mm. Therefore, not only can the investment cost of factories be reduced, but also multi-vehicle-type production can be realized.

Description

[0001] This application's patent claims domestic priority from the utility model patent with the application number 2024208857676. Technical Field

[0002] The present utility model relates to the technical field of automotive production line switching and positioning, and particularly to a flexible switching and positioning tool for an automotive body-in-white welding floor production line. Background Art

[0003] With the development of science and technology, the requirements of human society for the functions and quality of products are getting higher and higher, the product replacement cycle is getting shorter and shorter, and the complexity of products is also increasing accordingly. The traditional mass production method has been challenged. This challenge not only threatens small and medium-sized enterprises but also troubles large and medium-sized state-owned enterprises. Because in the mass production method, flexibility and productivity are contradictory. As is well known, only with a single variety, large batch, special equipment, stable process, and high efficiency can economies of scale be achieved; on the contrary, for multi-variety and small-batch production, the equipment has low specificity. In the case of similar processing forms, the work clamps need to be adjusted frequently, and the difficulty of stabilizing the process increases, which will inevitably affect production efficiency. In order to improve the flexibility and production efficiency of the manufacturing industry at the same time, shorten the product production cycle, reduce the product cost while ensuring product quality, and ultimately enable small and medium-batch production to compete with large-batch production, the flexible automation system came into being. In the automotive industry, due to numerous accessories, the flexible automation system is particularly important.

[0004] There are currently 3 main similar inventions on the market:

[0005] Invention 1: A windmill flexible positioning device for a body-in-white welding production line (CN108176940A)

[0006] This invention discloses a windmill flexible positioning device for a body-in-white welding production line, including a turntable frame. On one side of the turntable frame, there is a vertically arranged and rotatable windmill turntable. The turntable frame is provided with a driving device for driving the windmill turntable to rotate. The disk body of the windmill turntable is provided with a plurality of uniformly arranged positioning stations. Removable positioning mechanisms for clamping workpieces are installed on the positioning stations. A station switching mechanism for controlling the rotation position of the windmill turntable is provided between the windmill turntable and the turntable frame. An automatic emergency stop mechanism is provided between the turntable frame and the windmill turntable. The structure of this invention is simple, easy to maintain and repair, low in price, easy to control, good in versatility, and can adapt to flexible positioning for switching among multiple platforms and multiple vehicle models.

[0007] Invention 2: A body fixing with a large-load flexible switching unit (CN206998707U)

[0008] The utility model relates to a body fixing tooling with a large-load flexible switching unit. The lifting roller bed is placed on the ground; the skid is installed on the top of the lifting roller bed and realizes lifting movement through the lifting roller bed; the large-load flexible switching unit is installed and fixed on the ground on both sides of the lifting roller bed, and comprises a plurality of positioning units, a mounting plate, a rotating disc, a camshaft, an output shaft and a motor. Among them, the mounting plate is installed and fixed on both sides of the lifting roller bed and the skid, the rotating disc is installed on the mounting plate and rotates in a plane parallel to the mounting plate, a plurality of positioning units are arranged facing the skid and installed and fixed on the rotating disc, the camshaft is fixedly sleeved on the output shaft connected to the motor, and the rotating disc is connected to the output shaft through the camshaft. The body fixing tooling with a large-load flexible switching unit of the utility model comprises a plurality of positioning units, so as to realize the rapid switching of multiple different vehicle models.

[0009] Invention 3: Four-station fixture flexible switching windmill (CN210160606U)

[0010] The utility model relates to a four-station fixture flexible switching windmill, which comprises a fixed base, a fixture fixing turntable, a four-station electric indexing turntable and a position recognition sensor. The four-station electric indexing turntable is installed on the fixed base, the fixture fixing turntable is installed on the four-station electric indexing turntable and driven by the four-station electric indexing turntable to rotate in four stations, and the position recognition sensor is arranged on the fixed base and can detect the four stations of the fixture fixing turntable. The structure of the utility model is simple and compact, reducing the floor space, with high running precision, good stability, and being beneficial to reducing noise.

[0011] Such inventions all have deficiencies: the design rigidity of the positioning adjustment mechanism is insufficient; positioning is carried out through a servo motor, with a high cost; there is a lack of maintenance safety measures; during operation, this mechanism is prone to deformation, resulting in inaccurate positioning and poor equipment stability. Summary of the utility model

[0012] In order to overcome the above problems existing in the prior art, the utility model provides a flexible switching positioning tool for an automobile welding floor production line.

[0013] The utility model discloses a flexible switching positioning tool for an automobile welding floor production line, which comprises a cam divider mounting seat. Above the cam divider mounting seat, a cam divider is installed. The cam divider is provided with an input shaft, a first mounting surface, a positioning shaft, a second side mounting surface, an output shaft, a third mounting surface, a fourth mounting surface, a fifth mounting surface, a sixth mounting surface and a seventh mounting surface. The seventh mounting surface is fixed on the upper end surface of the cam divider mounting seat. A turntable is installed on the first mounting surface, and the turntable is positioned on the outer diameter of the positioning shaft. A positioning mechanism is installed on the turntable. A reduction motor is assembled on the fourth mounting surface, and the reduction motor is inserted on the outer diameter of the input shaft. A position sensor sensing block is installed on the output shaft. A position sensor protective cover is installed on the second side mounting surface, and a position sensor is installed on the position sensor protective cover. A vehicle type identification sensor mechanism is installed on the fifth mounting surface. An over-travel mechanism is installed on the third mounting surface. A maintenance plug mechanism is installed on the sixth mounting surface.

[0014] On this basis, the positioning mechanism comprises a pin cylinder, a mounting plate, a first connecting plate, a gasket, a second connecting plate and a third connecting plate. The pin cylinder is installed on one side of the mounting plate. The first connecting plate is installed on the other side of the mounting plate after adding a gasket. A clamping groove that fits the upper and lower surfaces of the mounting plate is formed on the first connecting plate. The second connecting plate is installed on the first connecting plate after adding a gasket. The second connecting plate is provided with a clamping groove that fits the upper and lower surfaces of the first connecting plate. The upper end surface of the third connecting plate is installed on the lower end surface of the second connecting plate through a gasket. The side surface of the third connecting plate is installed on the turntable mounting surface.

[0015] On this basis, the first connecting plate, the second connecting plate and the third connecting plate are in an "L" shape.

[0016] On this basis, the maintenance plug mechanism comprises a handle, a plug, a first connecting block, a fourth connecting plate, a fifth connecting plate, a first mounting seat, a bending part, an air pipe joint, a sensor and a first sensor bracket. The first mounting seat is installed on the sixth mounting surface. The bending part is installed on the mounting surface of the first mounting seat. A plurality of air pipe joints are distributed on the mounting holes of the bending part. A fifth connecting plate is installed on the first mounting seat. The fifth connecting plate is provided with a kidney-shaped hole, and the fourth connecting plate is installed on the fifth connecting plate through the kidney-shaped hole. The fourth connecting plate is provided with a kidney-shaped hole, and a first connecting block is installed on the fourth connecting plate. The plug passes through the positioning hole of the first connecting block. The handle is installed in the threaded hole of the plug. The first connecting block is provided with a carry and a retreat groove, so as to ensure the safety during maintenance or tool operation. The sensor is installed on the fourth connecting plate through the first sensor bracket and locked.

[0017] On this basis, the over-travel mechanism includes a safety block, a second mounting plate, a third mounting plate, a first safety sensor, a second safety sensor, and a protective cover. The safety block is mounted on the turntable. The second mounting plate is mounted on the third mounting surface. The third mounting plate is mounted on the second mounting plate. The second mounting plate mounts the first safety sensor and the second safety sensor. The protective cover is mounted on the third mounting plate.

[0018] On this basis, the over-travel mechanism further includes a safety virtual block provided on the turntable. The angle between the safety virtual block and the first safety sensor is 30°. The angle between the first safety sensor and the second safety sensor is 30°. The angle between the second safety sensor and the safety block is 30°.

[0019] On this basis, the vehicle type identification sensor mechanism includes an induction head, a vehicle type identification sensor bracket, and a vehicle type identification sensor. The induction heads are distributed and mounted in the turntable mounting holes. The vehicle type identification sensor bracket is mounted on the third mounting surface. The vehicle type identification sensor is mounted in the mounting hole of the vehicle type identification sensor bracket.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] (1) For the flexible switching positioning tool of the automobile welding floor production line of the present utility model, a cam divider is used for flexible equal division switching. The drive only requires an ordinary motor to move. The vehicle type and position relationship are controlled by sensors, and the repeat positioning accuracy can be guaranteed to be within 0.015 mm. This can not only reduce the factory input cost but also solve the production of multiple vehicle types.

[0022] (2) For the flexible switching positioning tool of the automobile welding floor production line of the present utility model, a card edge form is adopted at the positioning adjustment structure. In this way, when a 10KG tensile force is applied at the positioning point, the accuracy of the equipment can be guaranteed to be below 0.1 mm, meeting the requirements of actual production.

[0023] (3) For the flexible switching positioning tool of the automobile welding floor production line of the present utility model, an activity maintenance plug pin form is adopted, which can be completed only by manual pushing and pulling and is identified by sensors to ensure safety; during operation, to prevent the equipment from over-traveling and causing accidents, safety sensors are used to monitor the over-travel of the equipment operation to ensure the stability of production.

[0024] (4) The flexible switching positioning tool of the automobile welding floor production line of the present utility model can be used for positioning at multiple positions with different sizes of the body positioning holes. There are multiple vehicle types of induction heads provided on the turntable and are identified by vehicle type sensors. A vehicle type identification sensor is provided at the input end of the cam divider to control the rotation position. The entire equipment is restricted by safety sensors and vehicle type identification sensors to achieve precise control of vehicle type and position.

[0025] (5) The flexible switching and positioning tool for the automobile welding floor production line of the present utility model detects overtravel and adopts a 90° three-equal-part design method. The angle between the safety virtual block and safety sensor 1 is 30°, the angle between safety sensor 1 and safety sensor 2 is 30°, and the angle between safety sensor 2 and the safety block is 30°, ensuring that the equipment is consistent in the starting state and the state of rotating 270°, and ensuring that it can be quickly judged during overtravel and an alarm signal is given.

[0026] (6) The flexible switching and positioning tool for the automobile welding floor production line of the present utility model is identified by a vehicle type identification sensor, and induction heads are arranged on the turntable. To meet the identification function of the vehicle type sensor, the induction heads are arranged in an 80° distribution and connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the flexible switching and positioning tool for the automobile welding floor production line of the present utility model;

[0028] Figure 2 is a schematic front structural diagram of the cam divider of the present utility model;

[0029] Figure 3 is a schematic reverse structural diagram of the cam divider of the present utility model;

[0030] Figure 4 is a schematic structural diagram of the positioning mechanism of the present utility model;

[0031] Figure 5 is a schematic structural diagram of the maintenance plug mechanism of the present utility model;

[0032] Figure 6 is a schematic structural diagram of the overtravel mechanism of the present utility model;

[0033] Figure 7 is a schematic front structural diagram of the overtravel mechanism of the present utility model;

[0034] Figure 8 is a schematic structural diagram of the vehicle type identification sensor mechanism of the present utility model;

[0035] Figure 9 is a schematic front structural diagram of the vehicle type identification sensor mechanism of the present utility model;

[0036] In the figure: 1, turntable; 2, positioning mechanism, 2-1, pin cylinder, 2-2, mounting plate, 2-3, connecting plate I, 2-4, gasket, 2-5, connecting plate II, 2-6, connecting plate III; 3, cam divider, 3-1, input shaft, 3-2, mounting surface I, 3-3, positioning shaft, 3-4, side mounting surface II, 3-5, output shaft, 3-6, mounting surface III, 3-7, mounting surface IV, 3-8, mounting surface V, 3-9, mounting surface VI, 3-10, mounting surface VII; 4, reduction motor; 5, cam divider mounting seat; 6, vehicle type identification sensor mechanism, 6-1, sensing head, 6-2, vehicle type identification sensor bracket, 6-3, vehicle type identification sensor IV, 6-4, vehicle type identification sensor III, 6-5, vehicle type identification sensor II, 6-6, vehicle type identification sensor I; 7, over-travel mechanism, 7-1, safety block, 7-2, mounting plate II, 7-3, mounting plate III, 7-4, safety sensor I, 7-5, safety sensor II, 7-6, protective cover, 7-7, safety virtual block; 8, in-position sensor sensing block; 9, in-position sensor; 10, in-position sensor protective cover; 11, maintenance pin mechanism, 11-1, handle, 11-2, pin, 11-3, connecting block I, 11-4, connecting plate IV, 11-5, connecting plate V, 11-6, mounting seat I, 11-7, bending part, 11-8, air pipe joint, 11-9, sensor, 11-10, sensor bracket I. Detailed implementation mode

[0037] The following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0038] The present utility model discloses a flexible switching positioning tool for an automobile body-in-white welding floor production line. Refer to Figure 1 、 Figure 2 and Figure 3, including a cam divider mounting base 5, with a cam divider 3 mounted above the cam divider mounting base 5. The cam divider 3 is provided with an input shaft 3-1, a first mounting surface 3-2, a positioning shaft 3-3, a second side mounting surface 3-4, an output shaft 3-5, a third mounting surface 3-6, a fourth mounting surface 3-7, a fifth mounting surface 3-8, a sixth mounting surface 3-9, and a seventh mounting surface 3-10. The seventh mounting surface 3-10 is fixed to the upper end surface of the cam divider mounting base 5. A turntable 1 is mounted on the first mounting surface 3-2, and the turntable 1 is positioned on the outer diameter of the positioning shaft 3-3. A positioning mechanism 2 is mounted on the turntable 1. A speed reduction motor 4 is assembled on the fourth mounting surface 3-7, and the speed reduction motor 4 is inserted onto the outer diameter of the input shaft 3-1. A position sensor sensing block 8 is mounted on the output shaft 3-5, and a position sensor protective cover 10 is mounted on the second side mounting surface 3-4. A position sensor 9 is mounted on the position sensor protective cover 10 for identifying the position sensor sensing block 8. A vehicle type identification sensor mechanism 6 is mounted on the fifth mounting surface 3-8, an over-travel mechanism 7 is mounted on the third mounting surface 3-6, and a maintenance pin mechanism 11 is mounted on the sixth mounting surface 3-9. The cam divider 3 is used for flexible equal division switching, and only an ordinary motor is required for driving to perform the movement.

[0039] Reference Figure 1 and Figure 4 , the positioning mechanism 2 includes a pin cylinder 2-1, a mounting plate 2-2, a first connecting plate 2-3, a gasket 2-4, a second connecting plate 2-5, and a third connecting plate 2-6. The pin cylinder 2-1 is mounted on the reverse side of the mounting plate 2-2. The first connecting plate 2-3 is mounted on the front side of the mounting plate 2-2 after adding the gasket 2-4. The first connecting plate 2-3 is provided with a clamping groove that fits the upper and lower surfaces of the mounting plate 2-2. The second connecting plate 2-5 is mounted on the first connecting plate 2-3 after adding the gasket 2-4. The second connecting plate 2-5 is provided with a clamping groove that fits the upper and lower surfaces of the first connecting plate 2-3. After the clamping grooves are fitted, they are used to ensure the rigidity of the tool during operation. The upper end surface of the third connecting plate 2-6 is mounted on the lower end surface of the second connecting plate 2-5 through the gasket 2-4. The side surface of the third connecting plate 2-6 is mounted on the mounting surface of the turntable 1. The first connecting plate 2-3, the second connecting plate 2-5, and the third connecting plate 2-6 are in an "L" shape. The gasket 2-4 is used for XYZ-direction adjustment of the tool and is adjusted by adjusting the thickness of the gasket 2-4.

[0040] Reference Figure 1 and Figure 5, the maintenance bolt mechanism 11 includes a handle 11-1, a bolt 11-2, a first connecting block 11-3, a fourth connecting plate 11-4, a fifth connecting plate 11-5, a first mounting seat 11-6, a bending member 11-7, an air pipe joint 11-8, a sensor 11-9 and a first sensor bracket 11-10. The first mounting seat 11-6 is mounted on the sixth mounting surface 3-9. The bending member 11-7 is mounted on the mounting surface of the first mounting seat 11-6. A plurality of air pipe joints 11-8 are distributed on the mounting holes of the bending member 11-7 for arranging the air pipes and cables of the pin cylinder 2-1 to avoid the phenomenon of pipe winding during the operation of the tool. A fifth connecting plate 11-5 is mounted on the first mounting seat 11-6. The fifth connecting plate 11-5 is provided with a waist-shaped hole. The fourth connecting plate 11-4 is mounted on the fifth connecting plate 11-5 through the waist-shaped hole. The fourth connecting plate 11-4 is provided with a waist-shaped hole. The maintenance position can be adjusted in two directions through the waist-shaped holes on the fifth connecting plate 11-5 and the fourth connecting plate 11-4. A first connecting block 11-3 is mounted on the fourth connecting plate 11-4. The bolt 11-2 passes through the positioning hole of the first connecting block 11-3. The handle 11-1 is mounted in the threaded hole of the bolt 11-2. The first connecting block 11-3 is provided with a carry and a retreat groove to ensure the safety during maintenance or tool operation. The sensor 11-9 is mounted on the fourth connecting plate 11-4 through the first sensor bracket 11-10 and locked for detecting the maintenance state. The bolt 11-2 is used to position the jack 1-2 on the turntable. When the sensor 11-9 has no signal, the tool stops running, thus ensuring the safety of the maintenance personnel. The air pipe joint 11-8 is connected to the air inlet of the pin cylinder 2-1 to ensure that the tool will not have the phenomenon of pipe winding during operation.

[0041] Reference Figure 1 , Figure 6 and Figure 7 , the over-travel mechanism 7 includes a safety block 7-1, a second mounting plate 7-2, a third mounting plate 7-3, a first safety sensor 7-4, a second safety sensor 7-5 and a protective cover 7-6. The safety block 7-1 is mounted on the turntable 1. The second mounting plate 7-2 is mounted on the third mounting surface 3-6. The third mounting plate 7-3 is mounted on the second mounting plate 7-2. The second mounting plate 7-2 mounts the first safety sensor 7-4 and the second safety sensor 7-5. The protective cover 7-6 is mounted on the third mounting plate 7-3.

[0042] Reference Figure 6 and Figure 7, a position is set on the turntable 1, designated as the safety virtual block 7-7. During the actual working process, when the turntable 1 rotates 270°, the central position of the safety virtual block 7-7 and the central position of the safety block 7-1 form a 90° angle, the central position of the safety sensor 1 7-4 and the central position of the safety block 7-1 form a 30° angle, and the central position of the safety sensor 2 7-5 and the central position of the safety sensor 1 7-4 form a 30° angle. The safety sensor 1 7-4, the safety sensor 2 7-5, and the safety block 7-1 are used to prevent the tool from overtravel during operation. Among them, through the installation positions of the safety sensor 1 7-4, the safety sensor 2 7-5, and the safety block 7-1, and according to the position of the safety virtual block 7-7 rotated 270°, rapid determination can be ensured, and an alarm signal is given.

[0043] Detect the overtravel and adopt a 90° three-equal-part design method. The angle between the safety virtual block 7-7 and the safety sensor 1 7-4 is 30°, the angle between the safety sensor 1 7-4 and the safety sensor 2 7-5 is 30°, and the angle between the safety sensor 2 7-5 and the safety block 7-1 is 30°. Ensure that the device is consistent from the starting state and the state of rotating 270°, and ensure that rapid determination can be made during overtravel, and an alarm signal is given.

[0044] Reference Figure 8 , in this embodiment, four vehicle models can be recognized. The vehicle model recognition sensor mechanism 6 includes the induction head 6-1, the vehicle model recognition sensor bracket 6-2, and the vehicle model recognition sensor 4 6-3, the vehicle model recognition sensor 3 6-4, the vehicle model recognition sensor 2 6-5, and the vehicle model recognition sensor 1 6-6. The induction heads 6-1 are distributed and installed in the mounting holes of the turntable 1, the vehicle model recognition sensor bracket 6-2 is installed on the mounting surface 3 3-6, and the vehicle model recognition sensor 4 6-3, the vehicle model recognition sensor 3 6-4, the vehicle model recognition sensor 2 6-5, and the vehicle model recognition sensor 1 6-6 are installed in the mounting holes of the vehicle model recognition sensor bracket 6-2.

[0045] Reference Figure 8 And Figure 9 , the four induction heads 6-1 are distributed and installed on the turntable 1, and the vehicle model recognition sensor 4 6-3, the vehicle model recognition sensor 3 6-4, the vehicle model recognition sensor 2 6-5, and the vehicle model recognition sensor 1 6-6 are distributed and installed on the vehicle model recognition sensor bracket 6-2. Since rotating 90° will cause the positions to overlap and unable to be recognized, the angle between adjacent vehicle model recognition sensors is set to 10°, and the angle between the induction heads 6-1 is kept at 80°. In this way, it can be ensured that when the tool rotates 90°, the corresponding vehicle model can be quickly recognized.

[0046] This device can be used for positioning at four different positions of the body positioning holes. There are four vehicle models on the turntable that are sensed by the sensing heads and identified by the vehicle model sensors. The input end of the cam divider 3 is provided with a vehicle model identification sensor to control the rotation position. The entire device is mutually restricted by the safety sensor and the vehicle model identification sensor to achieve precise control of the vehicle model and position.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0048] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection", "padding", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in the relevant field. And the changes and modifications made by those skilled in the art that do not depart from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A flexible switching positioning tool for an automobile welding bottom panel production line, comprising a cam divider mounting seat (5), characterized in that: A cam divider (3) is installed above the cam divider mounting seat (5), and the cam divider (3) is provided with an input shaft (3-1), a mounting surface 1 (3-2), a positioning shaft (3-3), a side mounting surface 2 (3-4), an output shaft (3-5), a mounting surface 3 (3-6), a mounting surface 4 (3-7), a mounting surface 5 (3-8), a mounting surface 6 (3-9) and a mounting surface 7 (3-10), wherein the mounting surface 7 (3-10) is fixed to the upper end surface of the cam divider mounting seat (5), a rotating disk (1) is installed on the mounting surface 1 (3-2), and the rotating disk (1) is positioned on the outer diameter of the positioning shaft (3-3), and the rotating disk ( 1), a positioning mechanism (2) is installed on the mounting surface four (3-7), a reduction motor (4) is installed on the mounting surface four (3-7), the reduction motor (4) is inserted into the outer diameter of the input shaft (3-1), a position sensor induction block (8) is installed on the output shaft (3-5), a position sensor protective cover (10) is installed on the side mounting surface two (3-4), a position sensor (9) is installed on the position sensor protective cover (10), a vehicle type identification sensor mechanism (6) is installed on the mounting surface five (3-8), an overtravel mechanism (7) is installed on the mounting surface three (3-6), and a maintenance latch mechanism (11) is installed on the mounting surface six (3-9).

2. The flexible switching positioning tool for the automobile bottom panel welding production line according to claim 1 is characterized in that: The positioning mechanism (2) comprises a pin cylinder (2-1), a mounting plate (2-2), a connecting plate one (2-3), a gasket (2-4), a connecting plate two (2-5) and a connecting plate three (2-6); the pin cylinder (2-1) is mounted on one side of the mounting plate (2-2); the connecting plate one (2-3) is mounted on the other side of the mounting plate (2-2) by adding a gasket (2-4); a slot is provided on the connecting plate one (2-3) and matches with the upper and lower sides of the mounting plate (2-2); the connecting plate two (2-5) is mounted on the connecting plate one (2-3) by adding a gasket (2-4); the connecting plate two (2-5) is provided with a slot matches with the upper and lower sides of the connecting plate one (2-3); the upper end surface of the connecting plate three (2-6) is mounted on the lower end surface of the connecting plate two (2-5) through the gasket (2-4); and the side surface of the connecting plate three (2-6) is mounted on the mounting surface of the turntable (1).

3. The flexible switching positioning tool for the automobile bottom panel welding production line according to claim 2 is characterized in that: The connecting plate 1 (2-3), the connecting plate 2 (2-5) and the connecting plate 3 (2-6) are "L" shaped.

4. The flexible switching positioning tool for the automobile bottom panel welding production line according to claim 1 is characterized in that: The maintenance latch mechanism (11) comprises a handle (11-1), a latch (11-2), a connection block (11-3), a connection plate (11-4), a connection plate (11-5), a mounting seat (11-6), a bending piece (11-7), an air pipe joint (11-8), a sensor (11-9) and a sensor bracket (11-10); the mounting seat (11-6) is mounted on the mounting surface (3-9); the bending piece (11-7) is mounted on the mounting surface of the mounting seat (11-6); a plurality of air pipe joints (11-8) are distributed on the mounting holes on the bending piece (11-7); the mounting seat (11-6) is mounted with a connection plate (11-5) -5), the connecting plate five (11-5) is provided with a waist-shaped hole, the waist-shaped hole installs the connecting plate four (11-4) onto the connecting plate five (11-5), the connecting plate four (11-4) is provided with a waist-shaped hole, the connecting block one (11-3) is installed on the connecting plate four (11-4), the latch (11-2) passes through the positioning hole of the connecting block one (11-3), the handle (11-1) is installed in the threaded hole of the latch (11-2), the connecting block one (11-3) is provided with advance and retreat grooves, so as to ensure the safety during maintenance or tool operation, and the sensor (11-9) is installed on the connecting plate four (11-4) through the sensor bracket one (11-10) and locked.

5. The flexible switching positioning tool for the automobile bottom panel welding production line according to claim 1 is characterized in that: The overtravel mechanism (7) comprises a safety block (7-1), a second mounting plate (7-2), a third mounting plate (7-3), a safety sensor 1 (7-4), a safety sensor 2 (7-5) and a protective cover (7-6); the safety block (7-1) is mounted on the turntable (1); the second mounting plate (7-2) is mounted on the third mounting surface (3-6); the third mounting plate (7-3) is mounted on the second mounting plate (7-2); the first safety sensor (7-4) and the second safety sensor (7-5) are mounted on the second mounting plate (7-2); and the protective cover (7-6) is mounted on the third mounting plate (7-3).

6. The flexible switching positioning tool for the automobile bottom panel welding production line according to claim 5 is characterized in that: The overtravel mechanism (7) further comprises a safety virtual block (7-7) arranged on the turntable (1); the angle between the safety virtual block (7-7) and the safety sensor 1 (7-4) is 30°, the angle between the safety sensor 1 (7-4) and the safety sensor 2 (7-5) is 30°, and the angle between the safety sensor 2 (7-5) and the safety block (7-1) is 30°.

7. The flexible switching positioning tool for the automobile bottom panel welding production line according to claim 1 is characterized in that: The vehicle type recognition sensor mechanism (6) comprises a sensing head (6-1), a vehicle type recognition sensor bracket (6-2) and a vehicle type recognition sensor, wherein the sensing head (6-1) is installed in a mounting hole of the turntable (1), the vehicle type recognition sensor bracket (6-2) is installed on a mounting surface three (3-6), and the vehicle type recognition sensor is installed in a mounting hole of the vehicle type recognition sensor bracket (6-2).

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