Workpiece positioning device

Abstract

The utility model provides a workpiece positioning device, and relates to the technical field of vehicles. The workpiece positioning device comprises a base which comprises a base body, a supporting structure and a jacking structure, and the supporting structure and the jacking structure are oppositely arranged on the base body; the mounting frame comprises a fixing assembly and a first positioning assembly, the fixing assembly can be detachably connected with the workpiece, and the first positioning assembly can be matched with the workpiece; and the mounting frame is clamped between the supporting structure and the jacking structure. The stability of the workpiece positioning device can be improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, and in particular, to a positioning device of a workpiece. BACKGROUND

[0002] In a vehicle assembly process, the installation of the first support part and the second support part is extremely critical. The existing installation method of the first support part is: a workpiece is installed on the second support part, and then the first support part is connected with the workpiece to realize the installation of the second support part and the first support part.

[0003] However, the stability of the existing positioning device of the workpiece needs to be improved.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] The present disclosure provides a positioning device of a workpiece, which can improve the stability of the positioning device of the workpiece.

[0006] The positioning device of the workpiece provided by the present disclosure is used to connect the second support part and the first support part of a vehicle, and comprises:

[0007] a base comprising a seat body, a support structure and a top pressing structure, the support structure and the top pressing structure being oppositely arranged on the seat body;

[0008] a mounting frame comprising a fixing assembly and a first positioning assembly, the fixing assembly being detachably connected with the workpiece, and the first positioning assembly being capable of cooperating with the workpiece; the mounting frame being clamped between the support structure and the top pressing structure.

[0009] In an embodiment of the present disclosure, the mounting frame further comprises a connecting plate and a positioning plate;

[0010] the positioning plate being connected to one side of the connecting plate close to the seat body;

[0011] the fixing assembly comprising an adjusting rod and a hook claw; the adjusting rod being threadedly connected with the positioning plate, the hook claw being located on one side of the positioning plate close to the seat body and connected with the adjusting rod; and the workpiece being clippable between the hook claw and the positioning plate.

[0012] In an embodiment of the present disclosure, the first positioning assembly comprises at least one first positioning column, the first positioning column being arranged on one side of the connecting plate close to the seat body, and the first positioning column being capable of cooperating with a positioning hole on the workpiece.

[0013] In one embodiment of the present disclosure, the positioning plate is provided with at least one protruding structure on a side close to the seat body.

[0014] When the first positioning column is matched with the positioning hole, the protruding structure can be in contact with the workpiece.

[0015] In one embodiment of the present disclosure, the mounting rack further comprises a second positioning assembly, the second positioning assembly comprises at least one second positioning column, the second positioning column is arranged on a side of the connecting plate close to the seat body, and the support structure is provided with at least one matching hole, and the second positioning column can be matched with the matching hole.

[0016] In one embodiment of the present disclosure, the size of the matching hole along the first direction is greater than the size along the second direction, the first direction is perpendicular to the second direction, and the second support part is arranged along the second direction.

[0017] In one embodiment of the present disclosure, the support structure comprises a first support block and a second support block, the first support block and the second support block are arranged on the seat body along the first direction, and the matching hole is arranged on the second support block; the first support block and the second support block have a placing cavity for placing the second support part therebetween;

[0018] The mounting rack further comprises a first matching block and a second matching block arranged on a side of the connecting plate close to the seat body, the positioning plate is located between the first matching block and the second matching block, the first matching block is arranged on the first support block and detachably connected with the first support block, the second matching block is arranged on the second support block and detachably connected with the second support block, and the second positioning column is connected with the connecting plate through the second matching block;

[0019] The first matching block and the second matching block have a containing cavity for containing the workpiece therebetween.

[0020] In one embodiment of the present disclosure, the first matching block is hollowed out along the first direction.

[0021] In one embodiment of the present disclosure, the mounting rack is provided with a position sensing assembly, and the position sensing assembly sends a sensing signal when the mounting rack is arranged at a specified position on the base.

[0022] In one embodiment of the present disclosure, the top pressing structure comprises a support, a top pressing cantilever, a driving member and a plurality of top pressing blocks arranged on the top pressing cantilever.

[0023] The support is arranged on the base, the driving member is arranged on the support, and the top pressing cantilever is connected with the driving member, so as to drive the top pressing cantilever to move, and to apply pressure to the mounting frame through the top pressing block.

[0024] In one embodiment of the present disclosure, a lifting ring is arranged on the mounting frame.

[0025] The positioning device of the workpiece of the present disclosure is detachably connected with the workpiece through the fixing assembly, and the first positioning assembly is matched with the workpiece, so that the workpiece can be installed on the mounting frame. By clamping the mounting frame between the support structure and the top pressing structure, the stability of the entire positioning device is improved, and the positioning accuracy of the workpiece is improved, and the workpiece is conveniently installed on the second support part.

[0026] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present disclosure, and together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 It is a schematic diagram of the assembly of the second support part and the workpiece.

[0029] Figure 2 It is a schematic diagram of the structure of the workpiece.

[0030] Figure 3 It is a schematic diagram of the assembly of the positioning device of the workpiece, the workpiece and the second support part in one embodiment.

[0031] Figure 4 It is a schematic diagram of the structure of the positioning device of the workpiece in one embodiment, which is intended to show the state of the pressure applied to the mounting frame by the top pressing structure.

[0032] Figure 5 It is a schematic diagram of the structure of the positioning device of the workpiece in one embodiment, which is intended to show the state of the pressure applied to the mounting frame by the top pressing structure.

[0033] Figure 6 It is a schematic diagram of the overall structure of the mounting frame in one embodiment.

[0034] Figure 7 It is a schematic diagram of the overall structure of the mounting frame in one embodiment.

[0035] Figure 8 It is a schematic diagram of the local structure of the mounting frame in one embodiment.

[0036] Figure 9 Figure 8 is a partial assembly view of the workpiece, the fixing assembly, and the first positioning column in one embodiment.

[0037] Figure 10 Figure 9 is a structural view of the positioning device of the concealed mounting rack in one embodiment.

[0038] Legend of reference signs:

[0039] 100, second support part; 200, workpiece; 201, top plate; 202, side plate; 203, positioning hole;

[0040] 1, base; 11, seat body; 12, support structure; 121, first support block; 122, second support block; 1221, matching hole; 1222, detection hole; 123, placement cavity; 124, first pad block; 13, jacking structure; 131, support seat; 132, jacking cantilever; 133, driving piece; 134, jacking block; 135, second pad block; 2, mounting rack; 21, connecting plate; 211, bearing block; 212, support rod; 22, fixing assembly; 221, adjusting rod; 222, hook claw; 23, first positioning assembly; 231, first positioning column; 24, positioning plate; 241, protruding structure; 25, first matching block; 26, second matching block; 27, second positioning assembly; 271, second positioning column; 28, accommodating cavity; 29, position sensing assembly; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0041] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Moreover, the figures can not be to scale and some features can be exaggerated to show details of particular embodiments. Figures in the drawings are provided merely as illustrative examples, and therefore should not be construed as being restrictive as to the scope of the present disclosure.

[0042] The terms "one", "a", "an", "said", and "the" are used to indicate the existence of one or more than one element / component / etc.; the term "include" and "has" are used to indicate an open-ended inclusion of one or more elements / components / etc. in the process, method, article, composition or apparatus that are not limiting; the terms "first", "second", and "third" etc. are used merely as labels, and do not limit the number of elements to which they refer.

[0043] The first direction, the second direction and the third direction in the present disclosure are perpendicular to each other, and form the directions of a spatial coordinate system.

[0044] The workpiece 200 is taken as a cross beam support, the first support part is taken as a cross beam, and the second support part 100 is taken as a longitudinal beam.

[0045] In the vehicle assembly process, the workpiece 200 is installed on the second support part 100, and then the first support part is connected with the workpiece 200, so as to realize the installation of the second support part 100 and the first support part. Figure 1 and Figure 2 The workpiece 200 includes an integral top plate 201 and two side plates 202, the two side plates 202 are located on both sides of the top plate 201 and form a containing cavity with the top plate 201. The top plate 201 is provided with a plurality of positioning holes 203, the first support part can be connected with the workpiece 200 through the positioning holes 203, and the second support part 100 is located in the containing cavity and connected with the two side plates 202 through bolts. However, the stability of the existing positioning device of the workpiece is poor, which affects the positioning accuracy of the workpiece 200.

[0046] In order to solve the above problems, the present disclosure provides a positioning device of a workpiece, which comprises a base 1 and a mounting frame 2. Figures 3-7

[0047] The base 1 comprises a seat body 11, a support structure 12 and a top pressing structure 13; the support structure 12 and the top pressing structure 13 are oppositely arranged on the seat body 11.

[0048] The mounting frame 2 comprises a fixing assembly 22 and a first positioning assembly 23, the fixing assembly 22 can be detachably connected with the workpiece 200, and the first positioning assembly 23 can cooperate with the workpiece 200; the mounting frame 2 is clamped between the support structure 12 and the top pressing structure 13.

[0049] In this way, the fixing assembly 22 is detachably connected with the workpiece 200, and the first positioning assembly 23 cooperates with the workpiece 200, so that the workpiece 200 can be installed on the mounting frame 2; by clamping the mounting frame 2 between the support structure 12 and the top pressing structure 13, the stability of the entire positioning device is improved, and the positioning accuracy of the workpiece 200 is improved, so that the workpiece 200 can be installed on the second support part 100.

[0050] The parts of the positioning device of the workpiece of the present disclosure will be described in detail as follows:

[0051] Figure 3 ​​The seat 11 may include a seat plate, a support column, and a mounting plate. The seat plate may be a plate-like structure, and a support structure 12 and a top-pressure structure 13 may be disposed on the seat plate. The seat plate may extend along a first direction X, and the support structure 12 and the top-pressure structure 13 may be distributed on the seat plate along the first direction X. The seat plate and the mounting plate are connected by a support column, which may extend along a second direction Y. The mounting plate is located at the end of the seat plate away from the support column, and the mounting plate can be installed on the ground to fix the seat 11. Furthermore, a reinforcing plate may be welded between the support column and the mounting plate to increase the connection strength between the mounting plate and the support column. Reinforcing ribs may be welded between the support column and the seat plate to increase the connection strength between the seat plate and the support column, thereby improving the stability of the seat 11.

[0052] See Figure 3 , Figure 4 , Figure 10 The support structure 12 includes a first support block 121 and a second support block 122. The first support block 121 and the second support block 122 are spaced apart on the base 11 along a first direction X. The first support block 121 and the second support block 122 can be connected to the base 11 by pins or bolts. The structure of the first support block 121 and the second support block 122 can be I-shaped to increase support stability while reducing the weight of the first support block 121 and the second support block 122. The side of the first support block 121 away from the base 11 can cooperate with the mounting bracket 2, and the side of the second support block 122 away from the base 11 can also cooperate with the mounting bracket 2, so that the first support block 121 and the second support block 122 can jointly bear the weight of the mounting bracket 2. A placement cavity 123 for placing a second support portion 100 is provided between the first support block 121 and the second support block 122, and the second support portion 100 extends along a second direction Y.

[0053] During the positioning of workpiece 200, the second support 100 is pre-assembled with the vehicle body. The vehicle body is then moved to a designated location using a moving device, allowing the second support 100 to pass through the placement cavity 123 along the second direction Y. The workpiece 200 is then positioned on the second support 100 using the mounting bracket 2. The second support 100 is supported by the vehicle body, and the workpiece positioning device does not limit its movement. In other words, once the position of the vehicle body is fixed, the second support 100 is also fixed.

[0054] See Figures 4-10 The mounting bracket 2 also includes a connecting plate 21, a positioning plate 24, a first mating block 25, a second mating block 26, and a second positioning component 27.

[0055] The connecting plate 21 can be a plate structure, the first matching block 25 and the second matching block 26 can be arranged on the side of the connecting plate 21 close to the seat body 11, the positioning plate 24 and the first positioning assembly 23 can be connected to the side of the connecting plate 21 close to the seat body 11 through respective connecting blocks, and the fixing assembly 22 is arranged on the side of the positioning plate 24 along the second direction Y, and the positioning plate 24 is located between the first matching block 25 and the second matching block 26.

[0056] The first matching block 25 is arranged on the first supporting block 121 and detachably connected with the first supporting block 121, the second matching block 26 is arranged on the second supporting block 122 and detachably connected with the second supporting block 122, and the first matching block 25 and the second matching block 26 have a containing cavity 28 for containing the workpiece 200. In an example, the first matching block 25 can be directly placed on the first supporting block 121, and the second matching block 26 can be directly placed on the second matching block 26. In another example, the first matching block 25 can be clamped with the first supporting block 121, and the second matching block 26 can be directly placed on the second matching block 26.

[0057] The number of the second matching blocks 26 can be two, the two second matching blocks 26 are distributed along the second direction Y, and the two second matching blocks 26 have a space exposing a side plate 202 of the workpiece 200, so as to facilitate the workers to connect the second supporting part 100 and the workpiece 200 through bolts.

[0058] The positioning plate 24 can be a plate structure, and the side of the positioning plate 24 close to the seat body 11 is provided with at least one protruding structure 241. In the embodiment of the present disclosure, the number of the protruding structures 241 is two, the two protruding structures 241 are distributed along the first direction X, so as to facilitate the contact of the protruding structures 241 with the top plate 201 of the workpiece 200, reduce the positioning error caused by the contact of the whole positioning plate 24 with the top plate 201 of the workpiece 200, and improve the positioning accuracy and flexibility of the workpiece 200.

[0059] The first positioning assembly 23 comprises at least one first positioning column 231. In the embodiment of the present disclosure, the number of the first positioning columns 231 is two, the two first positioning columns 231 are spaced apart and arranged on the side of the connecting plate 21 close to the seat body 11 along the first direction X, and the interval of the two first positioning columns 231 is adapted to the interval of the two positioning holes 203 of the top plate 201, so as to facilitate the cooperation of the two first positioning columns 231 with the two positioning holes 203 respectively.

[0060] The number of the fixing assemblies 22 is two, and the two fixing assemblies 22 are oppositely arranged on both sides of the positioning plate 24 along the second direction Y. Each fixing assembly 22 comprises an adjusting rod 221 and a hook claw 222. The adjusting rod 221 is threadedly connected with the positioning plate 24 through a fixing block fixed to one side of the positioning plate 24. The hook claw 222 is located on the side of the positioning plate 24 close to the seat body 11 and is connected with the adjusting rod 221. The adjusting rod 221 extends along the third direction Z so that the workpiece 200 can be clamped between the hook claw 222 and the positioning plate 24 to prevent the workpiece 200 from moving away from the connecting plate 21.

[0061] The second positioning assembly 27 comprises at least one second positioning column 271. In the embodiment of the present disclosure, the number of the second positioning columns 271 is two, and the two second positioning columns 271 are spaced apart along the second direction Y and arranged on the side of the second matching block 26 close to the seat body 11, and one second positioning column 271 is arranged on one second matching block 26. Two matching holes 1221 are arranged on the second support block 122, and the two second matching holes 1221 are distributed on the side of the second support block 122 away from the seat body 11 along the second direction Y, and one second positioning column 271 can match one matching hole 1221. The second positioning column 271 matches the matching hole 1221 to facilitate the positioning of the mounting rack 2.

[0062] Referring to Figures 3-5 , the top pressing structure 13 comprises a support 131, a top pressing cantilever 132, a driving member 133, and a plurality of top pressing blocks 134 arranged on the top pressing cantilever 132.

[0063] The support 131 is arranged on the base 1, and the support 131 is a right-angle structural member.

[0064] The driving member 133 is arranged on the support 131, and the top pressing cantilever 132 is connected with the driving member 133, which is used to drive the top pressing cantilever 132 to move to apply pressure to the mounting rack 2 through the top pressing blocks 134.

[0065] The driving member 133 can comprise a turnover air cylinder, a turnover oil cylinder, or other driving members 133. Taking the turnover air cylinder as an example, the driving member 133 is arranged on the support 131 along the third direction Z, the top pressing cantilever 132 is connected with the output shaft of the driving member 133, and the included angle between the output shaft of the driving member 133 and the second direction Y is an acute angle; specifically, the included angle between the output shaft of the driving member 133 and the second direction Y can be 45°, 60°, etc., so as to reduce the interference generated by the top pressing structure 13 during the process that the workpiece 200 and the second support part 100 are installed through bolts.

[0066] The plurality of top pressing blocks 134 are arranged on the side of the top pressing cantilever 132 close to the mounting rack 2 to apply pressure to the mounting rack 2 through the top pressing blocks 134.

[0067] Thus, the top plate 201 of the workpiece 200 is placed between the two hook claws 222, the hook claws 222 can exert a force on the top plate 201 of the workpiece 200 close to the positioning plate 24 by adjusting the adjusting rod 221 to drive the hook claws 222 to rotate, until the top plate 201 of the workpiece 200 abuts against the protruding structure 241; meanwhile, each first positioning column 231 cooperates with each corresponding positioning hole 203, so as to clamp the top plate 201 between the hook claws 222 and the positioning plate 24, and realize the positioning of the workpiece 200. By placing the mounting rack 2 on the support structure 12, the second support part 100 is located in the accommodating cavity of the workpiece 200, and the first cooperating block 25 cooperates with the first support block 121, the second cooperating block 26 cooperates with the second support block 122, and the second positioning column 271 cooperates with the corresponding cooperating hole 1221, so as to position the mounting rack 2 on the support structure 12, and realize the positioning of the workpiece 200 on the second support part 100; finally, the driving piece 133 drives the top pressing cantilever 132 to overturn until the top pressing block 134 abuts against the side of the mounting rack 2 away from the seat body 11, so as to clamp the mounting rack 2 between the support structure 12 and the top pressing structure 13, facilitate the complete positioning of the workpiece 200 on the support structure 12, and improve the positioning stability and positioning accuracy of the workpiece 200.

[0068] In an embodiment of the present disclosure, referring to Figure 3 and Figure 4 , the first cooperating block 25 is hollowed out along the first direction X to expose the other side plate 202 of the workpiece 200, so as to facilitate the worker to connect the second support part 100 and the workpiece 200 by bolts.

[0069] In an embodiment of the present disclosure, referring to Figure 3 and Figure 4 , the first support block 121 is provided with a clamping groove away from the seat body 11, and the first pad 124 is arranged in the clamping groove, and the end of the first cooperating block 25 away from the connecting plate 21 can abut against the first pad 124, so as to reduce the abrasion between the first cooperating block 25 and the first support block 121 by the first pad 124, and improve the service life of the workpiece positioning device.

[0070] In an embodiment of the present disclosure, referring to Figure 10The size of the matching hole 1221 along the first direction X is greater than the size along the second direction Y, that is, the matching hole 1221 is a waist-shaped hole, the length direction of the matching hole 1221 is the first direction X, the width direction is the second direction Y, and the depth direction is the third direction Z. In this way, by setting the matching hole 1221 as a waist-shaped hole, the matching of the positioning device in the first direction X is flexible, and when the workpiece 200 is matched with the second support part 100, the matching error of the workpiece 200 and the second support part 100 in the first direction X can be compatible, the assembly difficulty of the workpiece 200 and the second support part 100 is reduced, and the compatibility of the positioning device of the workpiece is improved.

[0071] In an embodiment of the present disclosure, the side of the connecting plate 21 away from the positioning plate 24 is provided with a plurality of bearing blocks 211, the plurality of bearing blocks 211 are distributed at intervals along the first direction X, the number of the bearing blocks 211 is the same as the number of the top pressing blocks 134, and one top pressing block 134 can abut against one bearing block 211. In this way, by abutting the top pressing block 134 against the bearing block 211, it is convenient to apply pressure along the third direction Z to the mounting frame 2.

[0072] In an embodiment of the present disclosure, referring to Figure 4 , the side of the top pressing block 134 close to the bearing block 211 is provided with a second pad 135, and the second pad 135 is used to buffer the acting force between the top pressing block 134 and the bearing block 211, thereby reducing the wear of the top pressing block 134 and the bearing block 211 and prolonging the service life of the top pressing block 134 and the bearing block 211.

[0073] In an embodiment of the present disclosure, referring to Figure 3 , the side of the connecting plate 21 away from the positioning plate 24 is provided with a lifting ring (not shown in the drawings of the present disclosure), and the lifting ring is connected with the connecting plate 21 through a support rod 212, and the height of the support rod 212 is higher than the sum of the heights of the top pressing block 134, the second pad 135, and the bearing block 211. In this way, when it is necessary to install and dismount the mounting frame 2, the lifting hook of the crown block can be hooked with the lifting ring to realize the installation and dismounting of the mounting frame 2, thereby saving manpower and improving safety.

[0074] In an embodiment of the present disclosure, referring to Figures 4-7 , Figure 10The mounting frame 2 is provided with a position sensing assembly 29. The position sensing assembly 29 can be two position sensors. The two position sensors are connected to the connecting plate 21 near the side of the connecting plate 21 close to the seat body 11 through respective mounting blocks, and the two position sensors are spaced apart along the second direction Y, one of the position sensors is located between the two second matching blocks 26 and is arranged close to one of the second matching blocks 26, and the other second matching block 26 is located between the two position sensors; the second support block 122 is provided with a detection hole 1222 on the side of the second support block 122 away from the seat body 11, the detection hole 1222 is located between the two matching holes 1221, and is used for the position sensor located between the two second matching blocks 26 to pass through. When the mounting frame 2 is placed at the specified position on the base 1, one of the position sensors is located in the detection hole 1222, and the other position sensor does not contact the support structure 12, and the two position sensors emit sensing signals to reflect that the mounting frame 2 is assembled accurately. If any one of the sensors contacts the support structure 12, the position sensor does not emit a sensing signal to reflect that the mounting frame 2 is not assembled at the specified position and needs to be adjusted.

[0075] In this way, whether the mounting frame 2 is assembled in place is detected by the two position sensors, so as to further improve the positioning accuracy of the workpiece 200.

[0076] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. This application is intended to cover any variations, uses or adaptations of the disclosure that are deemed to fall within the general principles of the disclosure and include commonly known or customary practice in the art. The specification and examples are to be considered exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A positioning device of a workpiece for connecting a first support portion and a second support portion of a vehicle, characterized by, The positioning device comprises: The base comprises a seat body, a support structure and a top pressing structure, the support structure and the top pressing structure are oppositely arranged on the seat body; The mounting frame comprises a fixing assembly and a first positioning assembly, the fixing assembly is detachably connected with the workpiece, and the first positioning assembly is matched with the workpiece; the mounting frame is clamped between the support structure and the top pressing structure.

2. The workpiece positioning apparatus of claim 1, wherein, The mounting frame further comprises a connecting plate and a positioning plate; The positioning plate is connected to the side of the connecting plate close to the seat body; The fixing assembly comprises an adjusting rod and a hook claw; the adjusting rod is threadedly connected with the positioning plate, the hook claw is located on the side of the positioning plate close to the seat body and connected with the adjusting rod; and the workpiece can be clamped between the hook claw and the positioning plate.

3. The workpiece positioning apparatus of claim 2, wherein, The first positioning assembly comprises at least one first positioning column, the first positioning column is arranged on the side of the connecting plate close to the seat body, and the first positioning column is matched with the positioning hole on the workpiece.

4. The workpiece positioning apparatus of claim 3, wherein, The side of the positioning plate close to the seat body is provided with at least one protruding structure; When the first positioning column is matched with the positioning hole, the protruding structure can contact the workpiece.

5. The workpiece positioning apparatus of claim 3, wherein, The mounting frame further comprises a second positioning assembly, the second positioning assembly comprises at least one second positioning column, the second positioning column is arranged on the side of the connecting plate close to the seat body, the support structure is provided with at least one matching hole, and the second positioning column is matched with the matching hole.

6. The workpiece positioning apparatus of claim 5, wherein, The size of the matching hole along the first direction is greater than the size along the second direction, the first direction is perpendicular to the second direction, and the second support part is arranged along the second direction.

7. The workpiece positioning apparatus of claim 6, wherein, The support structure comprises a first support block and a second support block, the first support block and the second support block are spaced apart on the seat body along the first direction, and the matching hole is arranged on the second support block; the first support block and the second support block have a placing cavity for placing the second support part; The mounting frame further comprises a first matching block and a second matching block arranged on the side of the connecting plate close to the seat body, the positioning plate is located between the first matching block and the second matching block, the first matching block is arranged on the first support block and detachably connected with the first support block, the second matching block is arranged on the second support block and detachably connected with the second support block, and the second positioning column is connected with the connecting plate through the second matching block; The first matching block and the second matching block have a containing cavity for containing the workpiece.

8. The workpiece positioning apparatus of claim 7, wherein, The first matching block is hollow along the first direction.

9. The workpiece positioning apparatus of claim 1, wherein, The mounting frame is provided with a position sensing assembly, and the position sensing assembly sends a sensing signal when the mounting frame is arranged at a specified position on the base.

10. The workpiece positioning apparatus of claim 1, wherein, The top pressing structure comprises a support, a top pressing cantilever, a driving member and a plurality of top pressing blocks arranged on the top pressing cantilever; The support is arranged on the base, the driving member is arranged on the support, the top pressing cantilever is connected with the driving member, and the top pressing cantilever is used for driving the top pressing cantilever to move, so as to apply pressure to the mounting frame through the top pressing blocks.

11. The workpiece positioning apparatus of any of claims 1-10, wherein, The mounting frame is provided with a lifting ring.

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