A clamp flexible switching device

Abstract

The application discloses a clamp flexible switching device, which comprises a ground positioning device, a transfer device and a switching sliding table device; the ground positioning device is fixed on the ground and located at the rear end of the switching sliding table device, and is used for guiding and positioning the transfer device when the transfer device reaches a docking position with the switching sliding table device; the transfer device is used for carrying the clamp and transferring the clamp to the switching sliding table device; and the switching sliding table device is a double-layer sliding table structure, which is composed of a lower fixed sliding table and an upper switching sliding table. The clamp is switched in the form that the double-layer sliding table is matched with the transfer device, and the switching is driven by a linear rodless air cylinder, so that the part of the rod in the traditional air cylinder is removed, and the overall space of the air cylinder is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobile welding fixture, and particularly relates to a fixture flexible switching device capable of realizing quick switching of the fixture in a welding island. BACKGROUND

[0002] With the rapid development of the automobile industry, flexible production has become an inevitable trend. It is required to switch different tooling fixtures at the same station to realize flexible welding of multiple vehicle models, common use of public equipment, and to reduce personnel cost, equipment cost, and save the floor area of the workshop. SUMMARY

[0003] In order to solve the problems of unswitchable tooling fixture and large space occupation, the present application provides a fixture flexible switching device, which realizes the switching of the fixture in the island by cooperating the double-layer sliding table with the transfer device.

[0004] The purpose of the present application is realized by the following technical scheme combined with the drawings:

[0005] The fixture flexible switching device comprises a ground positioning device 1, a transfer device 2 and a switching sliding table device 3. The ground positioning device 1 is fixed on the ground and located at the rear end of the switching sliding table device 3, and is used for guiding and positioning the transfer device 2 when the transfer device 2 reaches the docking position with the switching sliding table device 3. The transfer device 2 is used for carrying the fixture and transferring it to the switching sliding table device 3. The switching sliding table device 3 is a double-layer sliding table structure, which comprises a lower fixed sliding table 3-1 and an upper switching sliding table 3-2. The lower fixed sliding table 3-1 comprises a fixed frame 3-1-1, a guide rail support 3-1-2, a lower layer straight-line rodless cylinder 3-1-3, a drag chain mechanism 3-1-4, a first limit 3-1-5 and a second limit 3-1-6. Two fixed frames 3-1-1 are fixed on the ground in parallel, and each fixed frame 3-1-1 is fixed with a guide rail support 3-1-2. The lower layer straight-line rodless cylinder 3-1-3 is fixed between the two fixed frames 3-1-1 and has the same driving direction as the guide rail support 3-1-2. The drag chain mechanism 3-1-4 is installed outside the guide rail support 3-1-2. The upper switching sliding table 3-2 is slidably connected to the guide rail support 3-1-2, and the upper switching sliding table 3-2 is connected to the output end of the lower layer straight-line rodless cylinder 3-1-3. The entire upper switching sliding table 3-2 is driven by the lower layer straight-line rodless cylinder 3-1-3 to move along the guide rail support 3-1-2. The first limit 3-1-5 and the second limit 3-1-6 are respectively fixed at the front and rear ends of the lower layer straight-line rodless cylinder 3-1-3, and are used for limiting the upper switching sliding table 3-2.

[0006] Further, the upper layer switching sliding table 3-2 comprises a sliding table frame 3-2-1, a sliding table conveying device 3-2-2, an upper layer rodless linear cylinder 3-2-3, a first locking and limiting cylinder 3-2-4, a second locking and limiting cylinder 3-2-5, a first locking cylinder 3-2-6 and a second locking cylinder 3-2-7; the sliding table frame 3-2-1 is slidingly connected to the guide rail support 3-1-2 of the lower layer fixed sliding table 3-1 and connected to the output end of the lower layer linear rodless cylinder 3-1-3; a plurality of the sliding table conveying devices 3-2-2 are arranged and installed at the top of the two sides of the sliding table frame 3-2-1 for conveying the transfer device 2; the upper layer rodless linear cylinder 3-2-3 is fixed on the sliding table frame 3-2-1 and its driving direction is the same as that of the lower layer linear rodless cylinder 3-1-3; the first locking cylinder 3-2-6 and the second locking cylinder 3-2-7 are respectively installed on the two sides of the upper layer rodless linear cylinder 3-2-3, the first locking cylinder 3-2-6 is used for inserting the first limiting part 3-1-5 or the second limiting part 3-1-6 of the lower layer fixed sliding table 3-1 to limit the upper layer switching sliding table 3-2, and the second locking cylinder 3-2-7 is used for cooperating with the clamp to position; the first locking and limiting cylinder 3-2-4 and the second locking and limiting cylinder 3-2-5 are respectively fixed on the rear end and the front end of the outer side of the sliding table frame 3-2-1 for locking and positioning the clamp.

[0007] Further, the ground positioning device 1 comprises a foot plate 1-1, an upper connecting plate 1-2 and a bending plate 1-3; the upper connecting plate 1-2 is fixed on the foot plate 1-1, and the bending plate 1-3 is fixed on the upper connecting plate 1-2, which is used for guiding and limiting the transfer device 2.

[0008] Further, the bending plate 1-3 adopts an "eight-shaped" opening form for guiding and limiting the guide wheels 2-1-2 of the transfer device 2.

[0009] Further, the transfer device 2 comprises a frame 2-1, a guiding mechanism 2-2, a conveying mechanism 2-3 and a locking mechanism 2-4; the guiding mechanism 2-2 is fixed on the front end of the frame 2-1 for interfacing with the switching sliding table device 3; a plurality of the conveying mechanisms 2-3 are arranged and fixed on the frame 2-1 for conveying the clamp along the workpiece feeding direction; the locking mechanism 2-4 is installed on the two sides of the front end and the top of the rear end of the frame 2-1 for fixing the switching sliding table device 3 and the clamp respectively.

[0010] Further, the frame 2-1 comprises a main frame 2-1-1, a guide wheel 2-1-2, a pushing wheel 2-1-3 and a buffer block 2-1-4; the guide wheel 2-1-2 is fixed on the bottom front end of the main frame 2-1-1 for guiding cooperation with the ground device 1; the pushing wheel 2-1-3 is fixed on the bottom of the main frame 2-1-1; and the buffer block 2-1-4 is fixed on the top rear end of the main frame 2-1-1.

[0011] Further, the conveying mechanism 2-3 comprises a connecting plate 2-3-1 and three needle roller cam guides 2-3-2; one needle roller cam guide 2-3-2 is horizontally fixed on the connecting plate 2-3-1, and the other two needle roller cam guides 2-3-2 are vertically fixed on the connecting plate 2-3-1 and are respectively arranged on the inner and outer sides of the connecting plate 2-3-1.

[0012] Further, the transfer device 2 further comprises a transfer fork guard 2-5 fixed on the bottom of the frame 2-1.

[0013] The working principle of the present application is as follows:

[0014] When the forklift sends the transfer device with the clamp to be switched to the workpiece position, the transfer device is manually connected and locked with the ground guide and the sliding table switching device, reaches the workpiece position, as shown in the drawing. Figure 1 The ground detection switch detects the clamp on the transfer device, the upper layer of the switching sliding table drives the locking limit cylinder to extend, the upper layer of the switching sliding table drives the locking limit cylinder to extend after reaching the position, cooperates with the tool clamp to form a driving connection, the locking cylinders on both sides of the upper layer of the switching sliding table extend, locks the upper layer of the sliding table and the tool clamp, the upper layer of the switching sliding table is pulled to the sliding table switching device, reaches the workpiece position, as shown in the drawing. Figure 2 The detection switch sends a signal after reaching the position, and the locking cylinder extends and locks with the lower layer of the fixed sliding table. The transfer device and the sliding table switching device are manually unlocked, and the workpiece position is pushed out. At this time, the tool clamp has been completely switched to the sliding table device, and the workpiece is placed. After the workpiece is placed, the locking cylinder that locks with the lower layer of the fixed sliding table is retracted, the lower layer of the straight line of the switching sliding table is driven to retract, and the detection switch sends a signal after reaching the position, and the locking cylinder extends and locks with the lower layer of the fixed sliding table again, and the clamp is sent to the welding position, as shown in the drawing. Figure 3 The robot starts welding. The space is saved by the rodless cylinder, and a larger walking distance can be realized in a small space.

[0015] The present application has the following beneficial effects:

[0016] The present application adopts the form of double-layer sliding table cooperating with the transfer device to realize the switching of the clamp, and is driven by the straight line of the rodless cylinder, without the part of the traditional cylinder rod, thereby reducing the occupation of the overall space of the cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the contents of the embodiments of the present application and the drawings.

[0018] Figure 1 The state schematic diagram of the clamp flexible switching device in the embodiment of the present application when the switching sliding table device is in the upper piece position;

[0019] Figure 2 The state schematic diagram of the clamp flexible switching device in the embodiment of the present application when the switching sliding table device is in the upper piece position;

[0020] Figure 3 The state schematic diagram of the clamp flexible switching device in the embodiment of the present application when the switching sliding table device is in the upper piece position;

[0021] Figure 4 The isometric structure schematic diagram of the clamp flexible switching device in the embodiment of the present application;

[0022] Figure 5 The structure schematic diagram of the ground positioning device in the embodiment of the present application;

[0023] Figure 6 The structure schematic diagram of the transfer device in the embodiment of the present application;

[0024] Figure 7 The frame structure schematic diagram of the transfer device in the embodiment of the present application;

[0025] Figure 8 The local enlarged structure schematic diagram of the clamp flexible switching device of the transfer device in the embodiment of the present application;

[0026] Figure 9 The conveying mechanism structure schematic diagram of the transfer device in the embodiment of the present application;

[0027] Figure 10 The locking mechanism structure schematic diagram of the transfer device in the embodiment of the present application;

[0028] Figure 11 The switching sliding table device structure schematic diagram in the embodiment of the present application;

[0029] Figure 12 The isometric schematic diagram of the switching sliding table device structure in the embodiment of the present application;

[0030] In the drawings:

[0031] 1-ground positioning device; 2-transfer device; 3-switching sliding table device;

[0032] 1-1- base plate; 1-2- upper connecting plate; 1-3- bent plate;

[0033] 2-1- frame; 2-2- guide mechanism; 2-3- conveying mechanism; 2-4- locking mechanism; 2-5- transfer fork guard;

[0034] 2-1-1- main frame; 2-1-2- guide caster; 2-1-3- pushing caster; 2-1-4- buffer block;

[0035] 2-3-1- connecting plate; 2-3-2- needle roller cam guide;

[0036] 3-1- lower layer fixed sliding table; 3-2- upper layer switching sliding table;

[0037] 3-3-1- fixed frame; 3-1-2- guide rail support; 3-1-3- lower layer straight line rodless cylinder; 3-1-4- drag chain mechanism; 3-1-6- No. 2 limiting;

[0038] 3-2-1- sliding table frame; 3-2-2- sliding table conveying device; 3-2-3- upper layer straight line rodless cylinder; 3-2-4- No. 1 locking limiting cylinder; 3-2-5- No. 2 locking limiting cylinder. DETAILED DESCRIPTION

[0039] The application will be further described below in conjunction with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the application, and not to limit the application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the application are shown in the drawings, not all the structures.

[0040] In the description of the present embodiment, the terms "upper", "lower", "left", "right" and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Example

[0043] like Figure 4 As shown, a flexible clamp switching device is disclosed, which employs a double-layer slide table in conjunction with a transfer device. It mainly includes a ground positioning device 1, a transfer device 2, and a switching slide table device 3. The ground positioning device 1 is fixed to the ground and located at the rear end of the switching slide table device 3, and is used to guide and position the transfer device 2 when it reaches the docking position with the switching slide table device 3. The transfer device 2 carries the clamp and transfers it to the switching slide table device 3. The switching slide table device 3 has a double-layer slide table structure.

[0044] like Figure 5 As shown, the ground positioning device 1 mainly consists of a base plate 1-1, an upper connecting plate 1-2, and a bending plate 1-3. The upper connecting plate 1-2 is fixed to the base plate 1-1, and the bending plate 1-3 is fixed to the upper connecting plate 1-2. The bending plate 1-3 is used to guide and limit the guide casters 2-1-2 of the transfer device 2. The bending plate 1-3 adopts a "figure-eight" opening, and the guide casters 2-1-2 of the transfer device 2 first enter the guide from the larger end of the "figure-eight" opening, which facilitates manual operation. The ground positioning device 1 mainly plays a coarse guiding role, which can more easily guide the transfer device and send it to the correct working position.

[0045] like Figure 6 As shown, the transfer device is a device for transferring fixtures, used to carry the fixtures to be switched, and to dock and lock with the slide device. The transfer device 2 mainly consists of a frame 2-1, a guide mechanism 2-2, a conveying mechanism 2-3, a locking mechanism 2-4, and a transfer fork guard 2-5. The guide mechanism 2-2 is fixed to the front end of the frame 2-1 and is used to dock with the switching slide device 3. Multiple conveying mechanisms 2-3 are arranged at intervals and fixed on the frame 2-1 for conveying fixtures along the workpiece feed direction. The locking mechanism 2-4 is installed on both sides of the front end and the top of the rear end of the frame 2-1, respectively for positioning when the transfer device docks with the switching slide device 3 and for docking and fixing with the fixture. The transfer fork guard 2-5 is fixed to the bottom of the frame 2-1.

[0046] As Figure 7 shown, the frame 2-1 is the main body of the whole transfer device, which is composed of four parts: the main frame 2-1-1, the guide caster 2-1-2, the push caster 2-1-3 and the buffer block 2-1-4. The main frame 2-1-1 is the main body of the frame part, mainly serving as a carrier. The guide caster 2-1-2 is fixed at the bottom front end of the main frame 2-1-1, used to form a guide cooperation with the ground device 1, and serves as a coarse guide. The push caster 2-1-3 is fixed at the bottom of the main frame 2-1-1, and is the source of movement of the transfer device. The buffer block 2-1-4 is fixed at the top rear end of the main frame 2-1-1, and serves as a buffer when the clamp is pushed onto the transfer device by the switching sliding table device.

[0047] As Figure 8 shown, the guide mechanism 2-2 is installed at the front end of the frame, used to form a "V" block cooperation with the switching sliding table device 3, and form a fine guide cooperation.

[0048] As Figure 9 shown, the conveying mechanism 2-3 is mainly composed of a connecting plate 2-3-1 and three needle roller cam guides 2-3-2. One needle roller cam guide 2-3-2 is fixed horizontally on the connecting plate 2-3-1, and the other two needle roller cam guides 2-3-2 are fixed vertically on the connecting plate 2-3-1 and are respectively arranged on the inner and outer sides of the connecting plate 2-3-1. The horizontally arranged needle roller cam guide can greatly reduce the friction of the horizontal movement of the switching clamp, and reduce the selection of the linear cylinder in the switching sliding table device. The vertically arranged needle roller cam guide can not only reduce the friction of the horizontal movement of the switching clamp, but also serve as a limiting function of the switching clamp in the transfer device.

[0049] As Figure 10 shown, the locking mechanism 2-4 is a standard purchased hand clamp, mainly installed in two positions. The first position is installed at the interface between the transfer device and the switching sliding table, mainly used to fix the relative position of the transfer device and the switching sliding table device. The second position is installed on the transfer device and the clamp, used to fix the clamp on the transfer device.

[0050] As Figure 6 shown, the transfer fork guard 2-5 is two guards made according to the distance between the transfer forklifts, which facilitates long-distance transfer.

[0051] As Figure 11 , 12 shown, the switching sliding table device 3 is an important part of the flexible switching of the clamp. The sliding table switching device is mainly composed of a lower fixed sliding table 3-1 and an upper switching sliding table 3-2. The lower fixed sliding table 3-1 is fixed on the ground and cooperates with the upper switching sliding table 3-2 to realize flexible switching.

[0052] The lower fixed sliding table 3-1 is mainly composed of a fixed frame 3-1-1, a guide rail support 3-1-2, a lower layer straight line rodless cylinder 3-1-3, a drag chain mechanism 3-1-4, a first limiting stop 3-1-5 and a second limiting stop 3-1-6; two fixed frames 3-1-1 are fixed on the ground in parallel, each fixed frame 3-1-1 is fixed with a guide rail support 3-1-2, the lower layer straight line rodless cylinder 3-1-3 is fixed between the two fixed frames 3-1-1 and its driving direction is the same as that of the guide rail support 3-1-2, and they are all arranged along the workpiece feeding direction; the drag chain mechanism 3-1-4 is installed outside the guide rail support 3-1-2; the upper layer switching sliding table 3-2 is slidingly connected to the guide rail support 3-1-2, and the upper layer switching sliding table 3-2 is connected to the output end of the lower layer straight line rodless cylinder 3-1-3, so that the entire upper layer switching sliding table 3-2 is driven by the lower layer straight line rodless cylinder 3-1-3 to move along the guide rail support 3-1-2; the first limiting stop 3-1-5 and the second limiting stop 3-1-6 are respectively fixed at the front end and the rear end of the lower layer straight line rodless cylinder 3-1-3, and are used for limiting the upper layer switching sliding table 3-2.

[0053] The upper layer switching sliding table 3-2 is mainly composed of a sliding table frame 3-2-1, a sliding table conveying device 3-2-2, an upper layer rodless straight line cylinder 3-2-3, a first locking limiting cylinder 3-2-4, a second locking limiting cylinder 3-2-5, a first locking cylinder 3-2-6 and a second locking cylinder 3-2-7; the sliding table frame 3-2-1 is slidingly connected to the guide rail support 3-1-2 of the lower layer fixed sliding table 3-1, and is connected to the output end of the lower layer straight line rodless cylinder 3-1-3; a plurality of sliding table conveying devices 3-2-2 are arranged at intervals on the top of the sliding table frame 3-2-1 on both sides, and are used for conveying the transfer device 2, and the structure of the sliding table conveying device 3-2-2 is the same as that of the conveying mechanism 2-3; the upper layer rodless straight line cylinder 3-2-3 is fixed on the sliding table frame 3-2-1 and its driving direction is the same as that of the lower layer straight line rodless cylinder 3-1-3; the first locking cylinder 3-2-6 and the second locking cylinder 3-2-7 are respectively installed on both sides of the upper layer rodless straight line cylinder 3-2-3, the first locking cylinder 3-2-6 is used for inserting the first limiting stop 3-1-5 or the second limiting stop 3-1-6 of the lower layer fixed sliding table 3-1 to limit the upper layer switching sliding table 3-2; the second locking cylinder 3-2-7 is used for cooperating with the clamp to position; the first locking limiting cylinder 3-2-4 and the second locking limiting cylinder 3-2-5 are respectively fixed at the rear end and the front end outside the sliding table frame 3-2-1, and are used for locking and positioning the clamp.

[0054] The working principle of the switching sliding table device 3 is as follows:

[0055] The lower linear rodless cylinder 3-1-3 drives the whole upper layer switching slide 3-2 to extend, and sends out a signal after reaching the position to detect the switch, detects the upper layer slide to be in place, the first locking cylinder 3-2-6 extends and inserts into the second limiting 3-1-6 to form a limiting, locks the upper layer slide; reaches the upper piece position, feeds back a signal, and the artificial can push the transfer device 2 with the clamp to cooperate with the upper layer switching slide 3-2 and lock the locking mechanism 2-4, like Figure 10 Position 1; the locking mechanism of the clamp cooperating with the transfer device is opened, like Figure 10 Position 2. The operator presses the button after discharging, at which time the upper layer slide receives an instruction, the first locking cylinder 3-2-6 retracts, the linear rodless cylinder 3-2-3 of the upper layer switching slide extends, and sends out a signal after reaching the position to detect the switch, the second locking cylinder 3-2-7 extends and cooperates with the positioning hole in the switching clamp BASE plate, the first locking limiting cylinder 3-2-4 and the second locking limiting cylinder 3-2-5 extend to position the clamp. After reaching the piece position, a signal is received, the upper layer rodless linear cylinder 3-2-3 retracts and takes the clamp needing switching to the upper piece position, the first locking cylinder 3-2-6 extends, and the artificial receives an instruction to put the workpiece. After the workpiece is put, the operator presses the button to discharge, the switching slide receives an instruction, the first locking cylinder 3-2-6 retracts, the lower linear rodless cylinder 3-1-3 retracts, takes the clamp to the welding position, and the first locking cylinder 3-2-6 extends. The robot starts welding, and after welding, an instruction is sent, and the whole slide switching device enters the next cycle.

[0056] The working principle of the embodiment is as follows:

[0057] When the forklift sends the transfer device with the clamp needing switching to the piece position, the artificial locks the transfer device through the ground guide and the slide switching device, reaches the piece position, like Figure 1 The ground detection switch detects the clamp on the transfer device to be in place, the upper layer rodless linear cylinder of the upper layer switching slide drives the locking limiting cylinder to extend, the upper layer rodless linear cylinder extends after reaching the position, the locking cylinder extends, cooperates with the tool clamp to form a driving connection, the locking cylinders on both sides of the upper layer switching slide extend, locks the upper layer slide and the tool clamp, the upper layer rodless cylinder retracts and takes the tool clamp to the slide switching device, reaches the upper piece position, like Figure 2 The detection switch sends out a signal after reaching the position, the locking cylinder extends and locks with the lower fixed slide. The artificial unlocks the transfer device and the slide switching device, pushes out the work position. At this time, the tool clamp has been completely switched to the slide device, and the workpiece is put. After the workpiece is put, the locking cylinder locked with the lower fixed slide retracts, the lower linear rodless cylinder drives the whole switching clamp and the upper layer switching slide to retract, the detection switch sends out a signal after reaching the position, the locking cylinder extends and locks with the lower fixed slide again, and takes the clamp to the welding position, like Figure 3The robot starts welding. The space-saving push by the rodless cylinder enables a greater walking distance in a small space.

[0058] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the scope of protection of the present application is not limited to the specific details of the above-described embodiments. Any person skilled in the art within the technical concept of the present application can make equivalent replacements or changes to the technical solutions and the inventive concept of the present application within the technical scope disclosed by the present application, and these simple modifications all belong to the scope of protection of the present application.

Claims

1. A flexible clamp switching device, characterized in that, The system includes a ground positioning device (1), a transfer device (2), and a switching slide device (3). The ground positioning device (1) is fixed on the ground and located at the rear end of the switching slide device (3). It is used to guide and position the transfer device (2) when it reaches the docking position with the switching slide device (3). The transfer device (2) is used to carry the fixture and transfer it to the switching slide device (3). The switching slide device (3) is a double-layer slide structure, consisting of a lower fixed slide (3-1) and an upper switching slide (3-2). The lower fixed slide (3-1) includes a fixed frame (3-1-1), a guide rail bracket (3-1-2), and a lower... The system includes a linear rodless cylinder (3-1-3), a cable chain mechanism (3-1-4), a first limit switch (3-1-5), and a second limit switch (3-1-6); two fixed frames (3-1-1) are fixed parallel to each other on the ground, and each fixed frame (3-1-1) has a guide rail bracket (3-1-2) fixed on it; the lower linear rodless cylinder (3-1-3) is fixed between the two fixed frames (3-1-1) and its driving direction is the same as that of the guide rail bracket (3-1-2); the cable chain mechanism (3-1-4) is installed on the outside of the guide rail bracket (3-1-2); the upper switching slide (3-2) is slidably connected to the guide rail bracket (3-1-2), and the upper... The upper layer switching slide (3-2) is connected to the output end of the lower layer linear rodless cylinder (3-1-3), and the lower layer linear rodless cylinder (3-1-3) drives the entire upper layer switching slide (3-2) to move along the guide rail bracket (3-1-2); the first limit switch (3-1-5) and the second limit switch (3-1-6) are respectively fixed at the front and rear ends of the lower layer linear rodless cylinder (3-1-3) to limit the upper layer switching slide (3-2); the upper layer switching slide (3-2) includes a slide frame (3-2-1), a slide conveying device (3-2-2), an upper layer rodless linear cylinder (3-2-3), a first locking limit cylinder (3-2-4), and a second locking limit cylinder. Limiting cylinder (3-2-5), locking cylinder No. 1 (3-2-6), and locking cylinder No. 2 (3-2-7); the slide frame (3-2-1) is slidably connected to the guide rail bracket (3-1-2) of the lower fixed slide (3-1) and connected to the output end of the lower linear rodless cylinder (3-1-3); multiple slide conveying devices (3-2-2) are arranged at intervals on both sides of the top of the slide frame (3-2-1) for conveying the transfer device (2); the upper rodless linear cylinder (3-2-3) is fixed on the slide frame (3-2-1) and its driving direction is the same as that of the lower linear rodless cylinder (3-1-3);Locking cylinder No. 1 (3-2-6) and locking cylinder No. 2 (3-2-7) are respectively installed on both sides of the upper rodless linear cylinder (3-2-3). Locking cylinder No. 1 (3-2-6) is used to insert into the first limit (3-1-5) or the second limit (3-1-6) of the lower fixed slide (3-1) to limit the upper switching slide (3-2). Locking cylinder No. 2 (3-2-7) is used to cooperate with the fixture for positioning. Locking limit cylinder No. 1 (3-2-4) and locking limit cylinder No. 2 (3-2-5) are respectively fixed to the rear end and front end of the outer side of the slide frame (3-2-1) for locking the positioning fixture.

2. The clamp flexible switching device as described in claim 1, characterized in that, The ground positioning device (1) includes a base plate (1-1), an upper connecting plate (1-2), and a bending plate (1-3); the upper connecting plate (1-2) is fixed on the base plate (1-1), the bending plate (1-3) is fixed on the upper connecting plate (1-2), and the bending plate (1-3) is used to guide and limit the transfer device (2).

3. The clamp flexible switching device as described in claim 2, characterized in that, The bending plate (1-3) adopts an "eight-shaped" opening form to guide and limit the guide casters (2-1-2) of the transfer device (2).

4. The clamp flexible switching device as described in claim 1, characterized in that, The transfer device (2) includes a frame (2-1), a guide mechanism (2-2), a conveying mechanism (2-3), and a locking mechanism (2-4); the guide mechanism (2-2) is fixed at the front end of the frame (2-1) and is used to dock with the switching slide device (3); multiple conveying mechanisms (2-3) are arranged at intervals and fixed on the frame (2-1) for conveying the fixture along the workpiece feed direction; the locking mechanism (2-4) is installed on both sides of the front end and the top of the rear end of the frame (2-1) and is used to fix the switching slide device (3) and the fixture, respectively.

5. The clamp flexible switching device as described in claim 4, characterized in that, The frame (2-1) includes a main frame (2-1-1), guide casters (2-1-2), push casters (2-1-3), and a buffer block (2-1-4); the guide casters (2-1-2) are fixed at the bottom front end of the main frame (2-1-1) and are used to form a guiding engagement with the ground device (1); the push casters (2-1-3) are fixed at the bottom of the main frame (2-1-1); and the buffer block (2-1-4) is fixed at the top rear end of the main frame (2-1-1).

6. The clamp flexible switching device as described in claim 4, characterized in that, The conveying mechanism (2-3) includes a connecting plate (2-3-1) and three needle roller cam guides (2-3-2); one needle roller cam guide (2-3-2) is horizontally fixed on the connecting plate (2-3-1), and the other two needle roller cam guides (2-3-2) are vertically fixed on the connecting plate (2-3-1) and respectively arranged on the inner and outer sides of the connecting plate (2-3-1).

7. The clamp flexible switching device as described in claim 4, characterized in that, The transfer device (2) also includes a transfer fork guard (2-5), which is fixed to the bottom of the frame (2-1).

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