A leg connection block welding assembly positioning device capable of detection

Abstract

The present invention relates to a leg connecting block welding assembly positioning device capable of detection, comprising a frame, a lower seat positioning device and an upper seat positioning device are arranged on the frame, the lower seat positioning device comprises a lower seat positioning seat arranged on the frame, the upper end surface of the upper portion of the lower seat positioning seat is a plane, one of the surfaces is an inclined surface with the same inclination as the inclined portion of the lower seat, a lower seat positioning pin which cooperates with the lower seat connecting hole penetrates the inclined surface, and a locking structure which presses the inclined surface of the lower seat is also arranged on the lower seat positioning seat, a lower seat detection block which is flush with its upper end surface is inserted into the upper portion of the lower seat positioning seat, a plug block detection groove which cooperates with the lower seat connecting plug block is opened on the lower seat detection block, a horizontally-oriented rangefinder is embedded in the groove wall of the plug block detection groove, and the number of the rangefinders is two and they are placed up and down; the lower seat connecting groove and the lower seat connecting plug block of the lower seat can be detected in position during positioning, so as to improve the quality of the leg connecting block after welding and reduce the probability of opening holes and grooves.

Description

Technical Field

[0001] The invention relates to the field of assembly equipment, and in particular to a leg connection block welding assembly positioning device capable of detection. Background Art

[0002] like Figure 2-3 As shown, a leg connecting block comprises an upper seat 11 and a lower seat 12. The upper seat 11 and the lower seat 12 are generally connected by welding. An upper seat connecting hole 13 is provided on the top of the upper seat 11, an upper seat connecting groove 14 is provided on the side plate, a lower seat connecting hole 15 is provided on the inclined plate of the lower seat 12, a lower connecting groove 16 is cut on the flat plate of the lower seat, and the cut part is folded to form a lower seat connecting plug 17 vertically downward, and the lower seat connecting hole 15 and the lower seat connecting plug 17 are the main connection points between the leg connecting block and the leg. If there is a position error, interference is likely to occur during assembly with the leg, resulting in the need to re-drill holes or re-grooves. Similarly, whether the docking position of the lower seat 12 and the upper seat 11 is accurate will also affect the assembly with the leg. Therefore, the existing manual docking welding is likely to cause the need to re-drill holes and re-grooves for subsequent assembly with the leg. Summary of the invention

[0003] The present invention relates to a leg connection block welding assembly positioning device capable of detection, which can position a lower seat and an upper seat that need to be welded through a mechanical structure, and can perform position detection on a lower seat connection groove and a lower seat connection plug of the lower seat during positioning, thereby improving the quality of the leg connection block after welding and reducing the probability of opening holes and grooves in the subsequent assembly process.

[0004] In order to achieve the purpose of movement, the technical solution adopted by the present invention is: a detectable leg connecting block welding assembly positioning equipment, including a frame, the frame is provided with a lower seat positioning device and an upper seat positioning device that cooperate with each other, the lower seat positioning device includes a lower seat positioning seat arranged on the frame, the upper end surface of the upper part of the lower seat positioning seat is a plane, one of the surfaces is an inclined surface with the same inclination as the inclined part of the lower seat, a lower seat positioning pin that cooperates with the lower seat connecting hole penetrates the inclined surface, and the lower seat positioning seat is also provided with a locking structure for pressing the inclined surface of the lower seat, a lower seat detection block flush with its upper end surface is inserted into the upper part of the lower seat positioning seat, the lower seat detection block is provided with a plug block detection groove that cooperates with the lower seat connecting plug block, a horizontal rangefinder is embedded in the groove wall of the plug block detection groove, and the number of the rangefinders is two and they are placed up and down.

[0005] Preferably, a contact sensing screen flush with the lower seat detection block and corresponding to the position of the lower seat connection groove is also embedded in the upper surface of the lower seat detection block.

[0006] Preferably, the lower seat positioning seat has no connection with the frame, the frame is provided with a lower seat positioning movable cylinder connected to the lower seat positioning seat, and the frame is also provided with a lower seat positioning intercepting block cooperating with the lower seat positioning seat, the locking structure includes a lower seat locking swivel seat arranged on the lower seat positioning seat, a lower seat locking handle is installed on the lower seat locking swivel seat, and the lower seat locking handle is connected to the lower seat locking swivel block.

[0007] Preferably, the upper seat positioning device includes an upper seat positioning seat arranged on the frame, the upper seat positioning seat is provided with an upper seat positioning lifting cylinder, the upper seat positioning lifting cylinder is provided with an upper seat positioning lifting block, the upper seat positioning lifting block is provided with an upper seat positioning mounting block, the upper seat positioning mounting block is provided with an upper seat positioning support plate for supporting the inner side of the upper plate of the upper seat, and the upper seat positioning support plate is provided with an upper seat positioning pin that cooperates with the upper seat connecting hole.

[0008] Preferably, a clamping device is also provided on the frame, and the clamping device includes a clamping mounting seat arranged on the frame, a clamping swivel seat is provided on the clamping mounting seat, a clamping swivel seat is hingedly installed with a clamping rotating block, one end of the clamping swivel block is connected to a clamping connecting block, the other end of the clamping swivel block is hingedly connected to a clamping cylinder, the clamping cylinder is hingedly installed on the clamping mounting seat, and the clamping connecting block is provided with a clamping block that cooperates with the upper seat on the upper seat positioning support plate.

[0009] Preferably, the upper seat positioning lifting cylinder is a two-end telescopic cylinder, and its cylinder body is slidably mounted on a slide rail vertically arranged on the side of the clamping mounting seat.

[0010] Preferably, the clamping mounting seat is further provided with a clamping limiting seat cooperating with the clamping rotating block, and the clamping rotating block is in a horizontal state when limited by the clamping limiting seat.

[0011] Preferably, the frame is provided with an upper seat transfer device which cooperates with the upper seat positioning device, the upper seat transfer device is cooperated with the upper seat conveying device, the upper seat transfer device includes a transfer and flipping motor arranged on the frame through a bracket, the transfer and flipping motor is connected with a transfer turn block, the transfer turn block is connected with a transfer flipping block, the transfer turn block is provided with a transfer movable cylinder, the transfer movable cylinder is connected with the transfer movable block, the transfer movable block is provided with a transfer clamping cylinder, and both ends of the transfer clamping cylinder are connected with transfer clamping structures which cooperate with the side surfaces of the upper seat.

[0012] Preferably, the upper seat conveying device includes an upper seat conveying trough arranged on the frame, the upper seat conveying trough is composed of a bottom plate and two side plates, and the last section of the upper seat conveying trough has only a bottom plate without a side plate, the length of this section is consistent with the length of the upper plate of the upper seat, and the bottom plate of this section is embedded with an electromagnet block, and a conveying interception block is arranged at the end of the upper seat conveying trough, and the lower end of the conveying interception block is connected to a vertical conveying interception spring, and the conveying interception spring is installed on a conveying interception frame arranged below the upper seat conveying trough, and a vertical conveying interception rod is also arranged on the conveying interception frame, and a conveying interception plug rod is provided at the lower part of the conveying interception block. A conveying interception socket cooperating with the conveying interception plug rod is opened.

[0013] Preferably, the transfer clamping structure includes a transfer clamping movable block connected to the transfer clamping cylinder, the transfer clamping movable block is connected to a transfer clamping block that cooperates with the side surface of the upper seat, and the inner side of the transfer clamping block is provided with a transfer clamping plug-in block that cooperates with the upper seat connecting groove sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a structural schematic diagram of a leg connection block welding assembly positioning device capable of detection.

[0015] Figure 2 It is a three-dimensional schematic diagram of the leg connecting block.

[0016] Figure 3 It is a three-dimensional schematic diagram of the leg connecting block.

[0017] Figure 4 It is a three-dimensional schematic diagram of the lower seat positioning device, the upper seat positioning device and the clamping device.

[0018] Figure 5 It is a three-dimensional schematic diagram of the lower seat positioning device.

[0019] Figure 6 It is a structural diagram of the lower seat detection block.

[0020] Figure 7 It is a three-dimensional schematic diagram of the upper seat positioning device.

[0021] Figure 8 This is a partial three-dimensional schematic diagram after the leg connecting block is positioned.

[0022] Fig. 9 It is a three-dimensional schematic diagram of the clamping device.

[0023] Fig.10 It is a schematic diagram of the structure of the upper seat transfer device and the upper seat conveying device.

[0024] Fig.11 Cross-sectional view of the upper seat conveyor device.

[0025] Fig.12 It is a structural schematic diagram of the transfer clamping part and the upper seat.

[0026] The text labels shown in the figure are as follows: 1. Frame; 2. Lower seat positioning movable cylinder; 3. Lower seat positioning device; 4. Lower seat positioning interception block; 5. Upper seat positioning device; 6. Pressing device; 7. Upper seat conveying device; 8. Upper seat transfer device; 11. Upper seat; 12. Lower seat; 13. Upper seat connecting hole; 14. Upper seat connecting groove; 15. Lower seat connecting hole; 16. Lower seat connecting groove; 17. Lower seat connecting plug block; 21. Lower seat positioning seat; 22. Lower seat positioning pin; 23. Lower seat locking swivel seat; 24. Lower seat locking handle; 25. Lower seat locking swivel block; 26. Lower seat detection block; 27. Contact sensing screen; 28. Plug block detection groove; 29. ​​Distance meter; 31. Upper seat positioning seat; 32. Upper seat positioning lifting cylinder; 33. Upper Seat positioning lifting block; 34, upper seat positioning mounting block; 35, upper seat positioning support plate; 36, upper seat positioning latch; 41, clamping mounting seat; 42, clamping cylinder; 43, clamping rotating block; 44, clamping rotating seat; 45, clamping limit seat; 46, clamping connecting block; 47, clamping block; 51, upper seat conveying trough; 52, electromagnet block; 53, conveying interception frame; 54, conveying interception spring; 55, conveying interception block; 56, conveying interception plug rod; 57, conveying interception socket; 61, transfer and flip motor; 62, transfer rotating block; 63, transfer and flip block; 64, transfer movable cylinder; 65, transfer movable block; 66, transfer clamping cylinder; 67, transfer clamping movable block; 68, transfer clamping block; 69, transfer clamping plug block. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0028] like Figure 1-6As shown, the specific structure of the present invention is: a leg connecting block welding assembly positioning device capable of detection, comprising a frame 1, on which a lower seat positioning device 3 and an upper seat positioning device 5 that cooperate with each other are arranged, the lower seat positioning device 3 comprises a lower seat positioning seat 21 arranged on the frame 1, the upper end surface of the upper portion of the lower seat positioning seat 21 is a plane, one of the surfaces is an inclined surface with the same inclination as the inclined portion of the lower seat 12, a lower seat positioning pin 22 that cooperates with the lower seat connecting hole 15 is penetrated on the inclined surface, and a locking structure for pressing the inclined surface of the lower seat 12 is also arranged on the lower seat positioning seat 21, a lower seat detection block 26 flush with its upper end surface is inserted into the upper portion of the lower seat positioning seat 21, a plug detection groove 28 that cooperates with the lower seat connecting plug block 17 is opened on the lower seat detection block 26, a horizontal rangefinder 29 is embedded in the groove wall of the plug detection groove 28, and the number of the rangefinders 29 is two and they are placed up and down.

[0029] The specific operation is as follows: the upper seat 11 is placed on the upper seat positioning device 5, the lower seat 12 is placed on the lower seat positioning seat 21, and the lower seat positioning pin 22 is passed through the lower seat connecting hole 15, and then the inclined surface of the lower seat 12 is pressed by the locking structure, thereby completing the positioning of the upper seat and the lower seat. After the positioning of the lower seat 12 is completed, the lower seat connecting plug 17 will fall into the plug detection groove 28 of the lower seat detection block 26, and then the distance is measured by two distance meters 29, and the position of the lower seat connecting plug 17 and the lower seat connecting hole 15 is judged by the measured distance. At the same time, it is also possible to determine whether the lower seat connecting block is tilted by measuring the difference in the distances measured by the two rangefinders 29. After the test is qualified, the positioned upper seat 11 and lower seat 12 are welded manually or by a robot, and the leg connecting block is removed after welding. The equipment can position the lower seat and upper seat that need to be welded through a mechanical structure, and can perform position detection on the lower seat connecting groove and the lower seat connecting block of the lower seat during positioning, thereby improving the quality of the leg connecting block after welding and reducing the probability of opening holes and slots in the subsequent assembly process.

[0030] like Figure 6 As shown, a contact sensing screen 27 flush with the lower seat detection block 26 and corresponding to the position of the lower seat connection groove 16 is also embedded on the upper surface of the lower seat detection block 26 .

[0031] The design of the touch sensing screen 27 can detect the shape of the lower seat connection groove 16, and further can detect the shape of the lower seat connection plug.

[0032] like Figure 1-5As shown, the lower seat positioning seat 21 has no connection with the frame 1, the frame 1 is provided with a lower seat positioning movable cylinder 2 connected to the lower seat positioning seat 21, and the frame 1 is also provided with a lower seat positioning intercepting block 4 cooperating with the lower seat positioning seat 21, the locking structure includes a lower seat locking swivel seat 23 arranged on the lower seat positioning seat 21, a lower seat locking handle 24 is installed on the lower seat locking swivel seat 23, and the lower seat locking handle 24 is connected to the lower seat locking swivel block 25.

[0033] When positioning the lower seat 12 for material discharge, the lower seat positioning seat 21 can be pushed outwards by the lower seat positioning movable cylinder 2, and then the lower seat can be discharged. This can avoid interference with the upper seat positioning device during material discharge. After the lower seat 12 is placed, the lower seat locking handle 24 drives the lower seat locking turn block 25 to rotate, so that the lower seat locking turn block 25 will press the inclined part of the lower seat 12, and then the lower seat positioning seat 21 is driven by the lower seat positioning movable cylinder 2 to move until it is intercepted by the lower seat positioning intercepting block 4. In this way, the lower seat 12 is positioned and moved to a position that cooperates with the upper seat positioning device. After welding is completed, the lower seat positioning movable cylinder 2 pushes out the lower seat positioning seat 21, which also facilitates the removal of the welded leg connecting seat.

[0034] like Figure 7-8 As shown, the upper seat positioning device 5 includes an upper seat positioning seat 31 arranged on the frame 1, the upper seat positioning seat 31 is provided with an upper seat positioning lifting cylinder 32, the upper seat positioning lifting cylinder 32 is provided with an upper seat positioning lifting block 33, the upper seat positioning lifting block 33 is provided with an upper seat positioning mounting block 34, the upper seat positioning mounting block 34 is provided with an upper seat positioning support plate 35 for supporting the inner side of the upper plate of the upper seat 11, and the upper seat positioning support plate 35 is provided with an upper seat positioning pin 36 that cooperates with the upper seat connecting hole 13.

[0035] The specific operation of the upper seat positioning device 5 is as follows: first, the upper seat 11 is placed on the upper seat positioning support plate 35, and the upper seat positioning pin 36 is passed through the upper seat connecting hole 13, and then the upper seat positioning lifting cylinder 32 is used to drive the upper seat positioning lifting block 33 to descend to the set height, so that the positioning of the upper seat can be completed and it can be docked with the position of the lower seat 12.

[0036] like Fig. 9As shown, a clamping device 6 is also provided on the frame 1, and the clamping device 6 includes a clamping mounting seat 41 arranged on the frame 1, and a clamping swivel seat 44 is provided on the clamping mounting seat, and a clamping swivel seat 44 is hingedly installed with a clamping swivel block 43, one end of the clamping swivel block 43 is connected to a clamping connecting block 46, and the other end of the clamping swivel block 43 is hingedly connected to a clamping cylinder 42, and the clamping cylinder 42 is hingedly installed on the clamping mounting seat 41, and the clamping connecting block 46 is provided with a clamping block 47 that cooperates with the upper seat 11 on the upper seat positioning support plate 35.

[0037] The design of the clamping device can cooperate with the upper seat positioning support block 35 to clamp the upper seat to avoid shaking during welding. The specific clamping operation is to extend the clamping cylinder 42 to drive the clamping rotary block 43 to rotate around the hinge position of the clamping rotary seat 44, so that the clamping block 47 contacts and clamps the upper seat 11 on the upper seat positioning support plate 35. The operation is simple and will not interfere with the lifting and positioning of the upper seat positioning device.

[0038] like Figure 7 As shown, the upper seat positioning lifting cylinder 32 is a two-end telescopic cylinder, and its cylinder body is slidably installed on a slide rail vertically arranged on the side of the clamping mounting seat 41.

[0039] The upper seat positioning lifting cylinder 32 is set as a cylinder with telescopic ends, which can increase the lifting range of the upper seat positioning lifting cylinder 32 within a limited space. At the same time, the large cylinder body of the upper seat positioning lifting cylinder 32 is slidably installed on the side of the clamping mounting seat 41, which can avoid tilting during the lifting process.

[0040] like Fig. 9 As shown, the pressing mounting seat 41 is also provided with a pressing limiting seat 45 cooperating with the pressing rotating block 43 , and the pressing rotating block 43 is in a horizontal state when limited by the pressing limiting seat 45 .

[0041] Through the design of the clamping limit seat 45, the rotation of the clamping rotating block 43 can be limited to avoid the clamping rotating block 43 from rotating too much.

[0042] like Figure 1 and 10As shown, the frame 1 is provided with an upper seat transfer device 8 which cooperates with the upper seat positioning device 5, and the upper seat transfer device 8 is cooperated with the upper seat conveying device 7. The upper seat transfer device 8 includes a transfer and flipping motor 61 which is arranged on the frame 1 through a bracket, and the transfer and flipping motor 61 is connected to a transfer block 62, and the transfer block 62 is connected to a transfer flipping block 63. The transfer block 62 is provided with a transfer movable cylinder 64, and the transfer movable cylinder 64 is connected to a transfer movable block 65. The transfer movable block 65 is provided with a transfer clamping cylinder 66, and both ends of the transfer clamping cylinder 66 are connected to transfer clamping structures which cooperate with the side surfaces of the upper seat 11.

[0043] The existing operation is to manually load the upper seat by the positioning device 5, but this will lead to reduced efficiency and easily interfere with the loading and positioning of the lower seat. Generally, the upper seat and the lower seat can only be loaded and positioned in turn, and synchronous loading operation cannot be achieved. The present application is designed with a loading transfer device, which can cooperate with the upper seat conveying device with the upper plate facing downward to achieve automatic loading and positioning of the upper seat. The specific operation is as follows: first, the transfer clamping cylinder 66 drives the transfer clamping structure to clamp the side of the upper seat 11 at the end of the upper seat conveying device 7, and then the transfer movable cylinder 64 drives the transfer movable block 65 to retract, so that the upper seat 11 is clamped to a position away from the upper seat conveying device 7, and then the transfer flip motor 61 drives the transfer rotating block 62 to rotate 180 degrees, thereby driving the transfer flip block and its upper The structure is flipped 180 degrees at the same time, so that the clamped upper seat 11 is flipped 180 degrees to a state where the upper plate is facing upward. At the same time, through the design of the distance, it can be designed that the center point line of the upper seat connecting hole after the flipping and the center point line of the upper seat positioning pin are in the same vertical plane. After that, the clamped upper seat can be placed on the upper seat positioning support plate 35 through the coordinated action of the transfer active cylinder 64 and the upper seat positioning lifting cylinder 32, and the upper seat positioning pin 36 is passed through the upper seat connecting hole 13. Then, the upper seat positioning lifting cylinder 32 is lowered to drive the upper seat 11 to a position that cooperates with the lower seat 12, and the upper seat transfer device returns to its original position to clamp and transfer the next upper seat. In this way, automatic loading of the upper seat is realized, and at the same time, interference with the lower seat positioning structure is avoided, so that the lower seat and the upper seat can be positioned synchronously to improve the positioning and docking efficiency.

[0044] like Fig.11As shown, the upper seat conveying device 7 includes an upper seat conveying trough 51 arranged on the frame 1, and the upper seat conveying trough 51 is composed of a bottom plate and two side plates, and the last section of the upper seat conveying trough 51 has only a bottom plate without a side plate, the length of this section is consistent with the length of the upper plate of the upper seat 11, and the bottom plate of this section is embedded with an electromagnet block 52, and a conveying interception block 55 is arranged at the end of the upper seat conveying trough 51, and the lower end of the conveying interception block 55 is connected with a vertical conveying interception spring 54, and the conveying interception spring 54 is installed on a conveying interception frame 53 arranged below the upper seat conveying trough 51, and the conveying interception frame 53 is also provided with a vertical conveying interception rod 56, and the lower part of the conveying interception block 55 is provided with a conveying interception socket 57 cooperating with the conveying interception rod 56.

[0045] The upper seat conveying device 7 is structurally designed such that the upper seat 11 is conveyed in the upper seat conveying slot 51. The first upper seat 11 will be conveyed to the electromagnet block 52 and intercepted by the conveying interception block 55. The upper surface of the conveying interception block 55 is generally designed to be an inclined surface. Then, the electromagnet block 52 is energized to adsorb and position the upper seat 11 to prevent the subsequent upper seat 11 from pushing the upper seat. Then, the upper seat that has been adsorbed and positioned is clamped by the clamping part of the upper seat transfer device, thereby avoiding the interference problem caused by the upper seat conveying slot 51 on the clamping, and at the same time achieving After the upper seat 11 is positioned and clamped, the electromagnet block 52 is powered off, and then the clamping part is driven to move along the conveying direction of the upper seat conveying groove 51 by the transfer movable cylinder, which will cause the conveying interception block 55 to drop and press down the conveying interception spring. In this way, the upper seat can be completely separated from the upper seat conveying groove 51, realizing the upper seat conveying positioning and transfer while avoiding interference. The design of the conveying interception rod 56 and the conveying interception socket 57 can avoid the problem of tilting movement of the conveying interception block 55 and ensure that it only produces lifting movement.

[0046] like Fig.12 As shown, the transfer clamping structure includes a transfer clamping movable block 67 connected to the transfer clamping cylinder 66, the transfer clamping movable block 67 is connected to a transfer clamping block 68 that cooperates with the side of the upper seat 11, and the inner side of the transfer clamping block 68 is provided with a transfer clamping plug-in block 69 that cooperates with the plug-in sleeve of the upper seat connecting groove 14.

[0047] The design of the transfer clamping structure can not only clamp the side of the upper seat 11 through the transfer clamping block 68, but also insert the transfer clamping plug 69 into the upper seat connecting groove 14. During the flipping process, it can avoid large relative movement or even slipping between the upper seat and the transfer clamping block 68.

[0048] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes 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 apparatus.

[0049] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A leg connection block welding assembly positioning device capable of detection, comprising a frame (1), characterized in that: The frame (1) is provided with a lower seat positioning device (3) and an upper seat positioning device (5) that cooperate with each other. The lower seat positioning device (3) includes a lower seat positioning seat (21) arranged on the frame (1). The upper end surface of the upper portion of the lower seat positioning seat (21) is a plane, one of the surfaces is an inclined surface with the same inclination as the inclined portion of the lower seat (12), a lower seat positioning pin (22) that cooperates with the lower seat connecting hole (15) passes through the inclined surface, and the lower seat positioning seat (21) is also provided with a locking structure for pressing the inclined surface of the lower seat (12). A lower seat detection block (26) flush with its upper end surface is inserted into the upper portion of the lower seat positioning seat (21), and a plug detection groove (28) that cooperates with the lower seat connecting plug block (17) is provided on the lower seat detection block (26). A horizontal distance meter (29) is embedded in the groove wall of the plug detection groove (28), and the number of the distance meters (29) is two and they are placed up and down. The upper seat positioning device (5) comprises an upper seat positioning seat (31) arranged on the frame (1), the upper seat positioning seat (31) is provided with an upper seat positioning lifting cylinder (32), the upper seat positioning lifting cylinder (32) is provided with an upper seat positioning lifting block (33), the upper seat positioning lifting block (33) is provided with an upper seat positioning mounting block (34), the upper seat positioning mounting block (34) is provided with an upper seat positioning support plate (35) for supporting the inner side of the upper plate of the upper seat (11), and the upper seat positioning support plate (35) is provided with an upper seat positioning pin (36) that cooperates with the upper seat connecting hole (13).

2. The detectable leg connection block welding assembly positioning device according to claim 1, characterized in that: The upper surface of the lower seat detection block (26) is also embedded with a contact sensing screen (27) that is flush with the lower seat detection block and corresponds to the position of the lower seat connection groove (16).

3. The detectable leg connection block welding assembly positioning device according to claim 1, characterized in that: The lower seat positioning seat (21) has no connection relationship with the frame (1); a lower seat positioning movable cylinder (2) connected to the lower seat positioning seat (21) is provided on the frame (1); and a lower seat positioning intercepting block (4) cooperating with the lower seat positioning seat (21) is also provided on the frame (1); the locking structure comprises a lower seat locking rotating seat (23) arranged on the lower seat positioning seat (21); a lower seat locking handle (24) is installed on the lower seat locking rotating seat (23); and the lower seat locking handle (24) is connected to the lower seat locking rotating block (25).

4. The detectable leg connection block welding assembly positioning device according to claim 1, characterized in that: The frame (1) is also provided with a clamping device (6), the clamping device (6) comprising a clamping mounting seat (41) arranged on the frame (1), the clamping mounting seat being provided with a clamping rotating seat (44), the clamping rotating seat (44) being hingedly provided with a clamping rotating block (43), one end of the clamping rotating block (43) being connected with a clamping connecting block (46), the other end of the clamping rotating block (43) being hingedly connected with a clamping cylinder (42), the clamping cylinder (42) being hingedly provided on the clamping mounting seat (41), and the clamping connecting block (46) being provided with a clamping block (47) cooperating with the upper seat (11) on the upper seat positioning support plate (35).

5. The detectable leg connection block welding assembly positioning device according to claim 4, characterized in that: The upper seat positioning lifting cylinder (32) is a two-end telescopic cylinder, and its cylinder body is slidably mounted on a slide rail vertically arranged on the side of the pressing mounting seat (41).

6. The detectable leg connection block welding assembly positioning device according to claim 4, characterized in that: The clamping mounting seat (41) is also provided with a clamping limiting seat (45) cooperating with the clamping rotating block (43), and the clamping rotating block (43) is in a horizontal state when being limited by the clamping limiting seat (45).

7. The detectable leg connection block welding assembly positioning device according to claim 1, characterized in that: The frame (1) is provided with an upper seat transfer device (8) that cooperates with the upper seat positioning device (5), and the upper seat transfer device (8) is cooperated with the upper seat conveying device (7). The upper seat transfer device (8) includes a transfer flipping motor (61) arranged on the frame (1) through a bracket, and the transfer flipping motor (61) is connected to a transfer block (62), and the transfer block (62) is connected to a transfer flipping block (63). The transfer block (62) is provided with a transfer movable cylinder (64), and the transfer movable cylinder (64) is connected to a transfer movable block (65). The transfer movable block (65) is provided with a transfer clamping cylinder (66), and both ends of the transfer clamping cylinder (66) are connected to transfer clamping structures that cooperate with the side surfaces of the upper seat (11).

8. The detectable leg connection block welding assembly positioning device according to claim 7, characterized in that: The upper seat conveying device (7) comprises an upper seat conveying trough (51) arranged on the frame (1), the upper seat conveying trough (51) is composed of a bottom plate and two side plates, and the end section of the upper seat conveying trough (51) has only a bottom plate without a side plate, the length of this section is consistent with the length of the upper plate of the upper seat (11), and the bottom plate of this section is embedded with an electromagnet block (52), and a conveying interception block (55) is arranged at the end of the upper seat conveying trough (51), and the lower end of the conveying interception block (55) is connected to a vertical conveying interception spring (54), and the conveying interception spring (54) is installed on a conveying interception frame (53) arranged below the upper seat conveying trough (51), and the conveying interception frame (53) is also provided with a vertical conveying interception plug rod (56), and the lower part of the conveying interception block (55) is provided with a conveying interception plug hole (57) that cooperates with the conveying interception plug rod (56).

9. The detectable leg connection block welding assembly positioning device according to claim 8, characterized in that: The transfer clamping structure comprises a transfer clamping movable block (67) connected to a transfer clamping cylinder (66); the transfer clamping movable block (67) is connected to a transfer clamping block (68) matched with a side surface of an upper seat (11); and a transfer clamping plug-in block (69) matched with a plug-in sleeve of a connecting groove (14) of the upper seat is arranged on the inner side of the transfer clamping block (68).

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