Positioning device

By designing a positioning device including a vehicle, a cover plate, a downward pressure assembly and a clamping assembly, the problem of quality reduction when dealing with products of different heights in the prior art is solved, and stable clamping and high-quality processing of products of different heights are achieved.

CN222986737UActive Publication Date: 2025-06-17HONGFUJIN PRECISION ELECTRONICS ZHENGZHOU
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Patent Information

Application Number
CN202421730452.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-22
Publication Date
2025-06-17
Estimated Expiration
2034-07-22

AI Technical Summary

Technical Problem

When existing positioning devices process products of different heights, they can easily lead to a decrease in product quality after processing.

Method used

A positioning device including a vehicle, a cover plate, a plurality of downward assembly and a clamp assembly is designed. The down pressure assembly consists of a press head and an elastic member, and the compression amount of the elastic member can be matched with the size of the target member to provide a stable compression force. The clamping assembly drives the clamping member to clamp the cover plate and the carrier through the drive mechanism to ensure that the pressing head applies a uniform compression force to the target member.

Benefits of technology

The positioning device can effectively and stably clamp products of different heights, avoid uneven stress caused by different sizes, improve the clamping stability of the product, and thus improve the quality of the product after processing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of clamping equipment, aims to solve the problem of how to improve the quality of processed products when the products with different heights need to be clamped, and provides a positioning device which comprises a carrier, a cover plate, a plurality of pressing assemblies and a clamping assembly. The carrier is provided with a plurality of bearing parts, and each bearing part is used for bearing a target piece. The cover plate is arranged opposite to the carrier in the first direction. The multiple pressing assemblies are arranged on the cover plate and correspond to the multiple bearing parts respectively, and each pressing assembly comprises a pressing head and an elastic piece; the pressing head is arranged on the side, close to the carrier, of the cover plate and is opposite to the corresponding bearing part in the first direction. The elastic piece elastically abuts against the position between the cover plate and the pressing head. The clamping assembly comprises a driving mechanism and a clamping piece, the clamping piece can abut against the side, away from the carrier, of the cover plate in the first direction, and the driving mechanism is in transmission connection with the clamping piece. The clamping device has the beneficial effects that the clamping stability is improved, and therefore the quality of machined products is improved.
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Description

Technical Field

[0001] The present application relates to the technical field of clamping equipment, and in particular to a positioning device. Background Art

[0002] In order to facilitate the processing of products, a positioning device is provided in the related art for clamping products.

[0003] However, the positioning device in the related art is likely to reduce the quality of the processed products when it is necessary to clamp products of different heights. Utility Model Content

[0004] The present application provides a positioning device to solve the problem of how to improve the quality of products after processing when products of different heights need to be clamped.

[0005] The present application provides a positioning device, including a carrier, a cover plate, a plurality of pressing components and a clamping component. The carrier is provided with a plurality of bearing parts, each bearing part being used to bear a target part. The cover plate is arranged relative to the carrier along a first direction. A plurality of pressing components are respectively arranged on the cover plate, and the plurality of pressing components correspond to the plurality of bearing parts respectively, and each pressing component includes a pressing head and an elastic member; the pressing head is arranged on a side of the cover plate close to the carrier, and is arranged relative to the corresponding bearing part along the first direction; the elastic member elastically abuts between the cover plate and the pressing head to apply an elastic force to the pressing head away from the cover plate along the first direction. The clamping component includes a driving mechanism and a clamping member, the clamping member can abut against a side of the cover plate away from the carrier along the first direction, and the driving mechanism is transmission-connected to the clamping member to drive the clamping member to approach the carrier along the first direction, so that the pressing head presses the target part on the corresponding bearing part.

[0006] In the above positioning device, since the multiple pressing components correspond to the multiple bearing parts one by one, when the multiple bearing parts are used to bear multiple target parts with different sizes along the first direction, the compression amount of the elastic parts corresponding to the target parts can match the size of the target parts, so that the multiple target parts can all be subjected to a stable clamping force, avoiding the situation where target parts of different sizes are subjected to uneven force along the first direction, resulting in unstable clamping of some target parts and reduced processing quality. For example, when the target part is a product and the first direction is the height direction of the product, the positioning device can clamp multiple products with different heights at a time, improve the clamping stability of products of different heights, and thus help improve the quality of the processed products.

[0007] In one embodiment, the bearing portion extends along a second direction, and the second direction is perpendicular to the first direction. A plurality of pressing components corresponding to the same bearing portion are arranged at intervals along the second direction.

[0008] In one embodiment, the indenter is movably disposed through the cover plate in a first direction; the indenter includes a guide rod and a head. The guide rod extends in the first direction. The head is connected to one end of the guide rod close to the carrier in the first direction and can abut against a target on the corresponding bearing portion. The radial dimension of the head is greater than that of the guide rod. The elastic member is disposed through the cover plate in the first direction and sleeved outside the guide rod. The elastic member elastically abuts between the cover plate and the head.

[0009] In one embodiment, the positioning device further includes a plurality of guide bearings disposed in the cover plate. The plurality of guide bearings correspond to the plurality of pressing assemblies one by one. The guide rod is movably disposed through the corresponding guide bearing in the first direction.

[0010] In one embodiment, the pressing assembly further includes a limiting member. The limiting member is disposed through the guide rod in the first direction. One end of the limiting member away from the carrier in the first direction extends out of the guide rod to form a limiting portion. The radial dimension of the limiting portion is greater than that of the guide rod. The limiting portion can abut against the side of the guide bearing away from the carrier in the first direction.

[0011] In one embodiment, the bearing portion extends in a second direction. The bearing portion includes two groups. The two groups of bearing portions are spaced apart from each other in a third direction. The bearing portions in the same group are distributed in the second direction. The first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0012] In one embodiment, the positioning device further includes a first positioning assembly and a second positioning assembly. The first positioning assembly is disposed on the carrier and on opposite sides of each bearing portion in the second direction, so that the first positioning assembly can abut against opposite sides of the target on the bearing portion in the second direction. The second positioning assembly is disposed on the carrier and on opposite sides of each bearing portion in the third direction, so that the second positioning assembly can abut against opposite sides of the target on the bearing portion in the third direction. The first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0013] In one embodiment, the positioning device further includes a base disposed on the side of the carrier away from the cover plate in the first direction. There are a plurality of carriers, and the plurality of carriers are replaceably mounted on the base.

[0014] In one embodiment, the positioning device further includes a base disposed on the side of the carrier away from the cover plate in the first direction. There are a plurality of carriers, and the plurality of carriers are replaceably mounted on the base.

[0015] In one embodiment, the driving mechanism is disposed on one side of the base away from the cover plate along the first direction. The clamping member includes a rod body and a clamping portion. The rod body passes through the cover plate, the carrier and the base along the first direction respectively. One end of the rod body away from the base along the first direction extends out of the cover plate and is connected to the clamping portion. The clamping portion can abut against one side of the cover plate away from the base along the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is the front view of the positioning device in an embodiment of the present application;

[0018] Figure 2 is Figure 1 the partial top view of the positioning device in the illustrated embodiment;

[0019] Figure 3 is Figure 1 the schematic structural view of the positioning device in the illustrated embodiment from another perspective;

[0020] Figure 4 is Figure 3 the partial structural cross-sectional view of the positioning device in the illustrated embodiment at the A-A section.

[0021] MAIN ELEMENT SYMBOL DESCRIPTION:

[0022] Positioning device 100

[0023] Carrier 10

[0024] Carrying portion 11

[0025] Cover plate 20

[0026] Pressing-down assembly 30

[0027] Pressing head 31

[0028] Guide rod 311

[0029] Head 312

[0030] Elastic member 32

[0031] Limiting member 34

[0032] Limiting portion 341

[0033] Clamping assembly 40

[0034] Drive mechanism 41

[0035] Clamping member 42

[0036] Rod body 421

[0037] Clamping portion 422

[0038] Guide bearing 50

[0039] First positioning assembly 60

[0040] Second positioning assembly 70

[0041] Carrier positioning member 80

[0042] Base 90

[0043] Target part 200

[0044] First direction X

[0045] Second direction Y

[0046] Third direction Z Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0048] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art belonging to the field of the present application. The terms used in the description of the present application herein are only for the purpose of describing specific implementation manners, and are not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0050] Some implementation manners of the present application will be described in detail. Without conflict, the following implementation manners and the features in the implementation manners can be combined with each other.

[0051] Embodiment

[0052] Figure 1 It is a front view of a positioning device 100 in one embodiment of the present application; Figure 2 for Figure 1 A partial structural top view of the positioning device 100 in the illustrated embodiment; Figure 3 for Figure 1 A schematic structural diagram of the positioning device 100 in the illustrated embodiment from another perspective; Figure 4 for Figure 3 The illustrated embodiment is a partial structural cross-sectional view of the positioning device 100 at section AA.

[0053] See also Figures 1 to 3 An embodiment of the present application provides a positioning device 100 , including a carrier 10 , a cover plate 20 , a plurality of pressing components 30 and a clamping component 40 .

[0054] The carrier 10 has a plurality of carrying portions 11 (see Figure 2 ), each carrying portion 11 is used to carry a target part 200. The cover plate 20 is arranged opposite to the carrier 10 along the first direction X. Figure 4 As shown, a plurality of pressing components 30 are respectively arranged on the cover plate 20, and the plurality of pressing components 30 correspond to the plurality of bearing parts 11, respectively. Each pressing component 30 includes a pressing head 31 and an elastic member 32. The pressing head 31 is arranged on a side of the cover plate 20 close to the carrier 10, and is arranged opposite to the corresponding bearing part 11 along the first direction X. The elastic member 32 elastically presses between the cover plate 20 and the pressing head 31 to apply an elastic force to the pressing head 31 away from the cover plate 20 along the first direction X. Figure 3 As shown, the clamping assembly 40 includes a driving mechanism 41 and a clamping member 42. The clamping member 42 can abut against a side of the cover plate 20 away from the carrier 10 along the first direction X. The driving mechanism 41 is connected to the clamping member 42 to drive the clamping member 42 to approach the carrier 10 along the first direction X, so that the pressing head 31 presses the target part 200 on the corresponding bearing part 11.

[0055] In the positioning device 100, the target part 200 is clamped in the space formed between the pressure head 31 and the bearing part 11. The driving mechanism 41 drives the clamping member 42 to clamp the cover plate 20 and the carrier 10. The elastic member 32 elastically presses between the cover plate 20 and the pressure head 31, thereby pressing the target part 200 between the pressure head 31 and the bearing part 11, so as to facilitate the processing of the target part 200. A plurality of bearing parts 11 are provided so that the positioning device 100 can clamp a plurality of target parts 200 at a time, thereby improving the clamping efficiency of the target part 200, reducing the workload of repeated clamping, reducing labor intensity, and improving processing efficiency. When in use, before the cover plate 20 and the pressing assembly 30 are covered on the carrier 10, the plurality of target parts 200 are placed on the plurality of bearing parts 11 respectively. In this way, the target part 200 can be conveniently taken and placed.

[0056] Since multiple pressing components 30 respectively correspond to multiple bearing parts 11, when the dimensions of multiple target parts 200 carried by multiple bearing parts 11 are different in the first direction X, the compression amount of each elastic member 32 can be matched with the dimension of the corresponding target part 200 along the first direction X, so that multiple target parts 200 can all be subjected to a stable pressing force, avoiding that due to the different dimensions of multiple target parts 200 in the first direction X, some target parts 200 cannot be stably pressed, resulting in a decrease in the quality of the target parts 200 after processing. For example, when the target part 200 is a product and the first direction X is the height direction of the product, the positioning device 100 can press multiple products with different heights at one time, so that multiple products on the carrier 10 are all subjected to a reliable pressing force, thereby improving the clamping stability of multiple products, and further being beneficial to improving the quality of the products after processing.

[0057] When designing the positioning device 100, multiple target parts 200 can be respectively clamped and positioned on the positioning device 100, and multiple target parts 200 are respectively processed. After processing, the dimensions of multiple target parts 200 are measured to detect whether the dimensions of the target parts 200 meet the error accuracy. If they meet, the positioning device 100 is put into normal production. If they do not meet, the parameters of the positioning device 100 can be adjusted so that the quality of the target parts 200 after processing meets the requirements.

[0058] In some embodiments, as Figure 1 and Figure 4 shown, the bearing part 11 extends along the second direction Y, and the second direction Y is perpendicular to the first direction X. Multiple pressing components 30 corresponding to the same bearing part 11 are arranged at intervals along the second direction Y. In this way, setting the bearing part 11 to extend along the second direction Y makes the bearing part 11 applicable to the target part 200 in a long strip shape, so that the target part 200 can be stably carried, and it is beneficial to save the space on the carrier 10. By setting multiple pressing components 30 corresponding to the same bearing part 11 to be arranged at intervals along the second direction Y, multiple pressing components 30 respectively abut against different parts of the target part 200, so that different parts of the target part 200 along the second direction Y receive a more balanced elastic force, thereby enabling the pressing components 30 to more stably press the corresponding target parts 200, and further improving the clamping stability of the target parts 200.

[0059] In use, the second direction Y can be the length direction of the target part 200.

[0060] In one embodiment, as Figure 4 shown, each bearing part 11 corresponds to two pressing components 30. In some other embodiments, the number of pressing components 30 corresponding to each bearing part 11 can also be set according to actual needs, which is not limited herein.

[0061] In some embodiments, as Figure 4 shown, the indenter 31 is movably disposed through the cover plate 20 along the first direction X. The indenter 31 includes a guide rod 311 and a head 312. The guide rod 311 extends along the first direction X. The head 312 is connected to one end of the guide rod 311 close to the carrier 10 along the first direction X and can abut against the target 200 on the corresponding bearing portion 11. The radial dimension of the head 312 is greater than that of the guide rod 311. The elastic member 32 is disposed through the cover plate 20 along the first direction X, and the elastic member 32 is sleeved outside the guide rod 311. The elastic member 32 elastically abuts between the cover plate 20 and the head 312. Thus, by arranging the elastic member 32 to be sleeved outside the guide rod 311, a guiding effect is provided for the compression or elongation of the elastic member 32 along the first direction X, so that the elastic force applied by the elastic member 32 to the indenter 31 is more stable, thereby improving the stability of the indenter 31 moving along the first direction X and the clamping stability of the target 200.

[0062] In some embodiments, as Figure 4 shown, the positioning device 100 further includes a plurality of guide bearings 50. The guide bearings 50 are disposed in the cover plate 20, and the plurality of guide bearings 50 correspond to the plurality of pressing components 30 one by one. The guide rod 311 is movably disposed through the corresponding guide bearing 50 along the first direction X. Thus, by arranging the guide bearings 50, the moving accuracy and moving stability of the indenter 31 moving relative to the cover plate 20 along the first direction X are improved, and the friction is reduced.

[0063] Optionally, the guide bearing 50 is a linear bearing.

[0064] In some embodiments, as Figure 4 shown, the pressing component 30 further includes a limiting member 34. The limiting member 34 is disposed through the guide rod 311 along the first direction X. One end of the limiting member 34 away from the carrier 10 along the first direction X extends out of the guide rod 311 and forms a limiting portion 341. The radial dimension of the limiting portion 341 is greater than that of the guide rod 311. The limiting portion 341 can abut against the side of the guide bearing 50 away from the carrier 10 along the first direction X to limit the movement of the indenter 31 relative to the cover plate 20 along the first direction X.

[0065] In some embodiments, as Figure 2 and Figure 4 shown, the bearing portion 11 extends along the second direction Y. The bearing portion 11 includes two groups, and the two groups of bearing portions 11 are spaced apart from each other along the third direction Z. The bearing portions 11 in the same group are distributed along the second direction Y. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other in pairs. Thus, the plurality of bearing portions 11 are more compactly distributed on the carrier 10, which is beneficial to reducing the volume of the positioning device 100 and further improving the clamping efficiency of the target 200.

[0066] In use, the third direction Z can be the width direction of the target part 200.

[0067] In one embodiment, as Figure 2 shown, the number of each set of bearing parts 11 is 3. In other embodiments, the number of each set of bearing parts 11 can also be set to other values according to the usage requirements, which are not limited herein.

[0068] In one embodiment, as Figure 2 shown, the positioning device 100 further includes a first positioning component 60 and a second positioning component 70. The first positioning component 60 is arranged on the carrier 10 and on the opposite sides of each bearing part 11 along the second direction Y, so that the first positioning component 60 can abut against the opposite sides of the target part 200 on the bearing part 11 along the second direction Y. The second positioning component 70 is arranged on the carrier 10 and on the opposite sides of each bearing part 11 along the third direction Z, so that the second positioning component 70 can abut against the opposite sides of the target part 200 on the bearing part 11 along the third direction Z. The first direction X, the second direction Y and the third direction Z are perpendicular to each other in pairs. In this way, by setting the first positioning component 60, the target part 200 on the bearing part 11 is fixed relative to the carrier 10 along the second direction Y, and by setting the second positioning component 70, the target part 200 on the bearing part 11 is fixed relative to the carrier 10 along the third direction Z, so that the target part 200 is more reliably fixed relative to the carrier 10, which further helps to improve the quality of the target part 200 after processing.

[0069] In use, first place a plurality of target parts 200 on the bearing parts 11 respectively, then cover the cover plate 20 on the carrier 10, and cover the pressing head 31 on the target parts 200. Drive the clamping part 42 to approach the carrier 10 along the first direction X through the driving mechanism 41, so that the pressing head 31 and the bearing part 11 press the target parts 200 tightly. Then install the first positioning component 60 and the second positioning component 70 on the carrier 10 respectively, so that the target parts 200 are fixed relative to the carrier 10 along the second direction Y and the third direction Z respectively.

[0070] In some embodiments, as Figure 1 and Figure 2 shown, the positioning device 100 further includes a carrier positioning part 80. The carrier positioning part 80 penetrates through the carrier 10 and the cover plate 20 along the first direction X respectively. In this way, the cover plate 20 is positioned relative to the carrier 10, that is, the pressing head 31 (see Figure 4 ) is positioned relative to the carrier 10, and the positioning accuracy of the pressing head 31 relative to the carrier 10 is improved.

[0071] In some embodiments, as Figure 3As shown, the positioning device 100 further includes a base 90, and the base 90 is disposed on the side of the carrier 10 away from the cover plate 20 along the first direction X. There are multiple carriers 10, and the multiple carriers 10 are replaceably mounted on the base 90. In this way, when one of the carriers 10 is mounted between the base 90 and the cover plate 20 and processes multiple target parts 200 on the carrier 10, the other carriers 10 are not mounted on the base 90, so that the target parts 200 (see Figure 2 ) can be placed on the other carriers 10, saving the clamping time of the target parts 200.

[0072] In some embodiments, as Figure 3 shown, the driving mechanism 41 is disposed on the side of the base 90 away from the cover plate 20 along the first direction X. The clamping member 42 includes a rod body 421 and a clamping portion 422. The rod body 421 passes through the cover plate 20, the carrier 10, and the base 90 along the first direction X respectively. The end of the rod body 421 away from the base 90 along the first direction X extends out of the cover plate 20 and is connected to the clamping portion 422. The clamping portion 422 can abut against the side of the cover plate 20 away from the base 90 along the first direction X. In this way, by driving the clamping member 42 to approach the base 90 along the first direction X through the driving mechanism 41, the cover plate 20, the carrier 10, and the base 90 are relatively fixed along the first direction X, and the target part 200 is pressed between the pressing head 31 and the bearing portion 11.

[0073] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A positioning device, characterized in that: include: A carrier, provided with a plurality of carrying parts, each of the carrying parts is used to carry a target part; A cover plate, arranged opposite to the carrier along a first direction; A plurality of pressing components are respectively arranged on the cover plate, the plurality of pressing components respectively correspond to the plurality of bearing parts, and each pressing component comprises a pressing head and an elastic member; the pressing head is arranged on a side of the cover plate close to the carrier, and is arranged opposite to the corresponding bearing part along the first direction; the elastic member elastically presses between the cover plate and the pressing head to apply an elastic force to the pressing head away from the cover plate along the first direction; The clamping assembly includes a driving mechanism and a clamping member, wherein the clamping member can abut against a side of the cover plate away from the carrier along the first direction, and the driving mechanism is connected to the clamping member to drive the clamping member to approach the carrier along the first direction, so that the pressing head presses the target part on the corresponding bearing part.

2. The positioning device according to claim 1, characterized in that: The bearing portion extends along a second direction, and the second direction is perpendicular to the first direction; A plurality of the pressing components corresponding to the same bearing portion are arranged at intervals along the second direction.

3. The positioning device according to claim 1, characterized in that: The pressure head is movably disposed on the cover plate along the first direction; the pressure head comprises a guide rod and a head, the guide rod extends along the first direction, the head is connected to one end of the guide rod close to the carrier along the first direction, and can abut against the target part on the corresponding bearing part, and the radial dimension of the head is greater than the radial dimension of the guide rod; The elastic member is arranged through the cover plate along the first direction, and is sleeved outside the guide rod. The elastic member elastically abuts between the cover plate and the head.

4. The positioning device according to claim 3, characterized in that: The positioning device further comprises a plurality of guide bearings, the guide bearings being arranged in the cover plate, and the plurality of guide bearings corresponding to the plurality of pressing components one by one; The guide rod is movably arranged in the corresponding guide bearing along the first direction.

5. The positioning device according to claim 4, characterized in that: The pressing assembly further includes a limiting member; The limiting member is penetrated through the guide rod along the first direction, and the limiting member extends out of the guide rod at one end away from the carrier along the first direction to form a limiting portion, the radial dimension of the limiting portion is greater than the radial dimension of the guide rod, and the limiting portion can be abutted against the side of the guide bearing away from the carrier along the first direction.

6. The positioning device according to claim 1, characterized in that: The bearing portion extends along a second direction; The bearing parts include two groups, the two groups of bearing parts are arranged at intervals from each other along the third direction, and the bearing parts in the same group are distributed along the second direction; The first direction, the second direction and the third direction are perpendicular to each other.

7. The positioning device according to claim 1, characterized in that: The positioning device also includes a first positioning component and a second positioning component; The first positioning assembly is disposed on the carrier and disposed on two opposite sides of each of the carrying portions along the second direction, so that the first positioning assembly can abut against two opposite sides of the target component on the carrying portion along the second direction; The second positioning assembly is disposed on the carrier and disposed on two opposite sides of each of the carrying portions along the third direction, so that the second positioning assembly can abut against two opposite sides of the target component on the carrying portion along the third direction; The first direction, the second direction and the third direction are perpendicular to each other.

8. The positioning device according to claim 1, characterized in that: The positioning device also includes a carrier positioning member; The carrier positioning member is respectively disposed through the carrier and the cover plate along the first direction.

9. The positioning device according to claim 1, characterized in that: The positioning device further includes a base, and the base is disposed on a side of the carrier away from the cover plate along the first direction; The carrier includes a plurality of carriers, and the plurality of carriers can be replaceably installed on the base.

10. The positioning device according to claim 9, characterized in that: The driving mechanism is arranged on a side of the base away from the cover plate along the first direction; The clamping member comprises a rod body and a clamping portion; The rod body is respectively arranged through the cover plate, the carrier and the base along the first direction, and one end of the rod body away from the base along the first direction extends out of the cover plate and is connected to the clamping portion; The clamping portion can abut against a side of the cover plate away from the base along the first direction.