Positioning device
The positioning device using the internal positioning method applies positive pressure to the frame-shaped workpiece through the worktable through hole and the drive assembly, which solves the problem of damage to the outer peripheral surface of frame-type parts during clamping and positioning, and achieves high-precision positioning and improved yield.
Patent Information
- Application Number
- CN202520509335.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-21
AI Technical Summary
In automated equipment, frame-type parts are prone to damage to their outer peripheral surfaces during clamping and positioning, resulting in product appearance defects and reduced yield.
The internal positioning method is adopted. Through the through holes and drive components on the worktable, positive pressure is applied to the frame-shaped workpiece for precise positioning using front and rear and left and right positioning components. Combined with photoelectric sensor detection and guide block guidance, the precise positioning of the parts is ensured.
It achieves high-precision positioning of frame-shaped workpieces, avoids damage to the outer circumference of parts, and improves product yield and machining accuracy.
Smart Images
Figure CN223849086U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a positioning device, and belongs to the technical field of automation equipment. BACKGROUND
[0002] With the advancement of technology, more and more factories use automation equipment to manufacture products. Especially in the production field of 3C products, automation equipment has been popularized.
[0003] In the process of preparing products by automation equipment, part positioning is the basis for realizing subsequent working operations, which affects the machining precision and consistency of products.
[0004] In some scenarios, after the parts are taken out from the tray, secondary positioning is needed to ensure the feeding accuracy of the parts. For example, when the part is a frame type part, the positioning mechanism generally clamps the part from various directions and realizes the positioning of the part.
[0005] However, when the part is clamped, the outer peripheral surface of the part is easily damaged or the outer peripheral surface of the part is easily contaminated, thereby causing appearance defects of the product and reducing the yield of the product. CONTENT OF THE INVENTION
[0006] The present disclosure provides a positioning device.
[0007] According to one aspect of the present disclosure, a positioning device for positioning a frame-shaped workpiece is provided, which comprises:
[0008] a workbench, wherein a first direction through hole and a second direction through hole are formed on the workbench; the frame-shaped workpiece is arranged on the workbench, and the interior of the frame-shaped workpiece comprises two first direction through holes and two second direction through holes;
[0009] a front-rear positioning assembly, at least part of which passes through the first direction through hole from below and is located in the interior of the frame-shaped workpiece;
[0010] a first driving assembly for driving the front-rear positioning assembly, so that the front-rear positioning assembly can apply a first direction positive pressure to the inner wall of the frame-shaped workpiece;
[0011] a left-right positioning assembly, at least part of which passes through the second direction through hole from below and is located in the interior of the frame-shaped workpiece;
[0012] a second driving assembly for driving the left-right positioning assembly, so that the left-right positioning assembly can apply a second direction positive pressure to the inner wall of the frame-shaped workpiece.
[0013] The positioning device according to at least one embodiment of the present disclosure further comprises:
[0014] A bottom plate for carrying the workbench, wherein the bottom plate is further used for guiding the movement of the front-rear positioning assembly and the left-right positioning assembly.
[0015] The positioning device according to at least one embodiment of the present disclosure, the front-rear positioning assembly comprises a front positioning member and a rear positioning member; the bottom plate is provided with a front guide groove and a rear guide groove, the front positioning member is slidably arranged in the front guide groove, and the rear positioning member is slidably arranged in the rear guide groove.
[0016] The positioning device according to at least one embodiment of the present disclosure, the first driving assembly comprises:
[0017] A first driving device arranged on the bottom plate; and
[0018] A first driving member provided with a front driving groove and a rear driving groove; at least part of the front positioning member is located in the front driving groove, and at least part of the rear positioning member is located in the rear driving groove, wherein when the first driving device drives the first driving member to move in the second direction, the front positioning member slides in the front driving groove, the rear positioning member slides in the rear driving groove, and the front positioning member and the rear positioning member approach or move away from each other.
[0019] The positioning device according to at least one embodiment of the present disclosure, the left-right positioning assembly comprises a left positioning member and a right positioning member; the bottom plate is provided with a left guide groove and a right guide groove, the left positioning member is slidably arranged in the left guide groove, and the right positioning member is slidably arranged in the right guide groove.
[0020] The positioning device according to at least one embodiment of the present disclosure, the second driving assembly comprises:
[0021] A second driving device arranged on the bottom plate; and
[0022] A second driving member provided with a left driving surface and a right driving surface; at least part of the left positioning member is in contact with the left driving surface, and at least part of the right positioning member is in contact with the right driving surface, wherein when the second driving device drives the second driving member to move in the first direction, the left positioning member slides relative to the left driving surface, the right positioning member slides relative to the right driving surface, and the left positioning member and the right positioning member approach or move away from each other.
[0023] According to the positioning device of at least one embodiment of the present disclosure, the left spring is installed between the left positioning member and the sidewall of the left guide groove, the right spring is installed between the right positioning member and the sidewall of the right guide groove, and the reset force provided by the left spring and the right spring is used to make the left positioning member and the right positioning member have a mutual approaching tendency.
[0024] According to the positioning device of at least one embodiment of the present disclosure, the mounting hole is formed on the workbench, and the photoelectric sensor is arranged in the mounting hole.
[0025] According to the positioning device of at least one embodiment of the present disclosure, the plurality of guide blocks are arranged on the workbench, the guide blocks define a space for placing the frame-shaped workpiece, and the guide blocks are used to guide the process of the frame-shaped workpiece entering the space.
[0026] According to the positioning device of at least one embodiment of the present disclosure, the support block is arranged on the workbench, and the support block is used to support the frame-shaped workpiece. BRIEF DESCRIPTION OF DRAWINGS
[0027] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the general description of the present disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure. These drawings are included herewith and constitute a part of this specification.
[0028] Figure 1 is a schematic diagram of a use state of a positioning device according to one embodiment of the present disclosure.
[0029] Figure 2 is a schematic diagram of a structure of a positioning device according to one embodiment of the present disclosure.
[0030] Figure 3 is a schematic diagram of a structure of a positioning device according to one embodiment of the present disclosure from another angle.
[0031] Figure 4 is a schematic diagram of a structure of a part of a positioning device according to one embodiment of the present disclosure.
[0032] Figure 5 is a schematic diagram of a structure of a first driving assembly according to one embodiment of the present disclosure.
[0033] Figure 6 is a schematic diagram of a structure of a second driving assembly according to one embodiment of the present disclosure.
[0034] The specific reference signs in the drawings are as follows:
[0035] 100 workbench
[0036] 110 guide block
[0037] 120 support block
[0038] 200 front and back positioning assembly
[0039] 210 front positioning member
[0040] 220 back positioning member
[0041] 300 first driving assembly
[0042] 310 first driving device
[0043] 320 first driving member
[0044] 321 front driving groove
[0045] 322 back driving groove
[0046] 400 left and right positioning assembly
[0047] 410 left positioning member
[0048] 420 right positioning member
[0049] 430 left spring
[0050] 440 right spring
[0051] 500 second driving assembly
[0052] 510 second driving device
[0053] 520 second driving member
[0054] 521 left driving surface
[0055] 522 right driving surface
[0056] 600 base plate
[0057] 700 photoelectric sensor
[0058] 800 third driving assembly DETAILED DESCRIPTION
[0059] The present disclosure will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related content, and not to limit the present disclosure. In addition, it should be noted that only parts related to the present disclosure are shown in the drawings for ease of description.
[0060] It should be noted that the embodiments and features in the embodiments of the present disclosure can be combined with each other without conflict. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.
[0061] Unless otherwise stated, the exemplary implementations / examples illustrated will be understood to provide exemplary features of various details that can be implemented in practice to embody the technological concepts of the present disclosure. Accordingly, features of the various implementations / examples can additionally be combined, separated, interchanged, and / or rearranged, unless otherwise stated, without departing from the technological concepts of the present disclosure.
[0062] The use of cross-hatching and / or shading in the drawings is generally used to indicate different regions within the same component and is not intended to indicate specific materials, material properties, dimensions, ratios, etc. Moreover, the use of same reference numerals in different figures indicates similar and / or identical components. In the drawings, the depicted exemplary embodiments can be somewhat simplified for the sake of illustration.
[0063] When a component is referred to as being “on” or “over” another component, “connected to” or “coupled to” another component, it can be directly on, connected, or coupled to the other component, or intervening components can be present. When a component is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another component, there are no intervening components present. By the term “connected” is meant to include physical or electrical connections, with or without intervening components.
[0064] For descriptive purposes, the present disclosure can use spatial or relative terms, such as “below,” “lower,” “lowermost,” “above,” “upper,” “uppermost,” “vertical,” “horizontal,” and the like, to describe the relationship between one component and another component as the figure(s) are oriented. Unless otherwise stated, the spatial and / or relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the figures. For example, if a device is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the exemplary term “below” can encompass both an orientation of above and below. Moreover, the device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
[0065] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "including," "includes," "having," "has," "a," "an," "one," and / or "said" are used in this specification and / or claims, such terms are intended to be inclusive (meaning as including one or more of items in the list of items that such term describes) and / or to be construed as one or more of the items in the list of items that such term describes. It is also noted that the terms "substantially," "approximately," and other similar terms, where used herein, are used as terms of approximation and not as terms of degree, unless otherwise indicated, so that such terms are construed as permitting a reasonable amount of variance from the recited measurement or value.
[0066] Figure 1 is a schematic diagram of a use state of a positioning device according to an embodiment of the present disclosure. Figure 2 is a schematic diagram of a structure of a positioning device according to an embodiment of the present disclosure. Figure 3 is a schematic diagram of a structure of a positioning device according to an embodiment of the present disclosure.
[0067] As Figure 1 shown, the positioning device of the present disclosure can position a frame-shaped workpiece and make the frame-shaped workpiece be positioned with high precision when in use.
[0068] Specifically, as Figure 2 and Figure 3 shown, the positioning device of the present disclosure can include a workbench 100, a front-rear positioning assembly 200, a first driving assembly 300, a left-right positioning assembly 400, a second driving assembly 500, a bottom plate 600, and the like.
[0069] The workbench 100 of the present disclosure can be square-shaped, which can include a length direction and a width direction. The width direction is the first direction, and the length direction is the second direction. In the direction shown in Figure 2 , the first direction is the up-down direction of Figure 2 (i.e., the front-rear direction when actually used), and the second direction is the left-right direction of Figure 2 .
[0070] The workbench 100 of the present disclosure can be supported by the bottom plate 600. In other words, the workbench 100 of the present disclosure is provided with the bottom plate 600, and the bottom plate 600 can bear the workbench 100.
[0071] Figure 4 is a schematic diagram of a structure of a part of a positioning device according to an embodiment of the present disclosure.
[0072] AsFigures 1 to 4 As shown, the workbench 100 of this disclosure has mounting holes, and a photoelectric sensor 700 is installed in the mounting holes. Specifically, as... Figure 4 As shown, a mounting groove is provided on the base plate 600, which corresponds to the mounting hole of the worktable 100. At least a portion of the photoelectric sensor 700 is located in the mounting groove and at least a portion is located in the mounting hole. The photoelectric sensor 700 is used to detect the presence or absence of the frame-shaped workpiece.
[0073] In one specific embodiment, the workbench 100 of this disclosure is provided with a plurality of guide blocks 110, the guide blocks 110 defining the space for placing the frame-shaped workpiece, and the guide blocks 110 are used to guide the process of the frame-shaped workpiece entering the space.
[0074] In one specific embodiment, the guide block 110 can define two spaces for placing frame-shaped workpieces; preferably, the guide block 110 is located at a corner of the space.
[0075] The space for placing the frame-shaped workpiece in this disclosure is also square-shaped, wherein the length direction of the space is the first direction mentioned above, and the width direction of the space is the second direction mentioned above. Moreover, these two spaces for placing the frame-shaped workpiece are distributed along the length direction of the worktable 100.
[0076] Although the accompanying drawings of this disclosure only show a case where the number of spaces for placing frame-shaped workpieces is two, those skilled in the art will understand that multiple spaces for placing frame-shaped workpieces can be formed on the worktable 100 of this disclosure. This disclosure does not limit the number of spaces for placing frame-shaped workpieces.
[0077] like Figure 2 As shown, the workbench 100 of this disclosure is provided with a support block 120, which is used to support the frame-shaped workpiece. In a specific embodiment, the support block 120 can be made of plastic material, so that the support block 120 can provide support force to the frame-shaped workpiece without damaging it.
[0078] The worktable 100 of this disclosure has a first-direction through hole and a second-direction through hole; a frame-shaped workpiece is placed on the worktable 100, such that the interior of the frame-shaped workpiece includes two first-direction through holes and two second-direction through holes. Both the first-direction through holes and the second-direction through holes are elongated holes, with the length direction of the first-direction through hole being the first direction and the length direction of the second-direction through hole being the second direction.
[0079] The disclosure of the frame-shaped workpiece including two first-direction through holes and two second-direction through holes means that two first-direction through holes and two second-direction through holes are formed on the worktable directly below the interior of the frame-shaped workpiece. Those skilled in the art should understand that the two first-direction through holes can also be connected and form a whole, and similarly, the two second-direction through holes can also be connected and form a whole; this implementation is also within the protection scope of this disclosure.
[0080] In this disclosure, at least a portion of the front and rear positioning assembly 200 passes through a first direction through hole from below and is located inside the frame-shaped workpiece; a first driving assembly 300 is used to drive the front and rear positioning assembly 200 so that the front and rear positioning assembly 200 can apply a first direction positive pressure (i.e., forward positive pressure and backward positive pressure) to the inner wall of the frame-shaped workpiece; at least a portion of the left and right positioning assembly 400 passes through a second direction through hole from below and is located inside the frame-shaped workpiece; a second driving assembly 500 is used to drive the left and right positioning assembly 400 so that the left and right positioning assembly 400 can apply a second direction positive pressure (i.e., left positive pressure and right positive pressure) to the inner wall of the frame-shaped workpiece.
[0081] Figure 5 This is a schematic diagram of the structure of a first driving component according to one embodiment of the present disclosure. Figure 6 This is a schematic diagram of the structure of a second drive component according to one embodiment of the present disclosure.
[0082] like Figures 1 to 6 As shown, the front and rear positioning assembly 200 of this disclosure includes a front positioning member 210 and a rear positioning member 220; the left and right positioning assembly 400 includes a left positioning member 410 and a right positioning member 420. In a specific embodiment, the front positioning member 210, rear positioning member 220, left positioning member 410, and right positioning member 420 of this disclosure have the same or similar structures, for example, they all include a sliding plate, a follower disposed on the lower surface of the sliding plate, and a positioning post disposed on the upper surface of the sliding plate; wherein, the sliding plate is configured to be square in shape, thereby the base plate 600 can guide the movement of the front and rear positioning assembly 200 and the left and right positioning assembly 400.
[0083] In one specific embodiment, the front positioning member 210 has two positioning posts arranged along the second direction, so that the frame workpiece is positioned in the same posture after being positioned by the contact between the two positioning posts and the inner wall surface of the frame workpiece.
[0084] In the present disclosure, the front guide groove and the rear guide groove are formed on the bottom plate 600, the sliding plate of the front positioning member 210 is slidably arranged in the front guide groove, and the sliding plate of the rear positioning member 220 is slidably arranged in the rear guide groove, so that the front positioning member 210 can move along the first direction, and the rear positioning member 210 can also move along the first direction. Similarly, the left guide groove and the right guide groove are formed on the bottom plate 600, the sliding plate of the left positioning member 410 is slidably arranged in the left guide groove, and the sliding plate of the right positioning member 420 is slidably arranged in the right guide groove, so that the left positioning member 410 can move along the second direction, and the right positioning member 420 can also move along the second direction.
[0085] As shown in Figure 5 The first driving assembly 300 of the present disclosure includes a first driving device 310 and a first driving member 320; the first driving device 310 is arranged on the bottom plate 600; the first driving member 320 is provided with a front driving groove 321 and a rear driving groove 322; at least part (follower) of the front positioning member 210 is located in the front driving groove 321, and at least part (follower) of the rear positioning member 220 is located in the rear driving groove 322, wherein when the first driving device 310 drives the first driving member 320 to move along the second direction, the front positioning member 210 slides in the front driving groove 321, the rear positioning member 220 slides in the rear driving groove 322, and the front positioning member 210 and the rear positioning member 220 approach or move away from each other in the first direction.
[0086] In other words, the front positioning member 210 and the rear positioning member 220 of the present disclosure have opposite movement directions, so that the positioning column of the front positioning member 210 can exert a forward force on the front end of the frame-shaped workpiece, and the positioning column of the rear positioning member 220 can exert a rearward force on the rear end of the frame-shaped workpiece, at this time, the front positioning member 210 and the rear positioning member 220 can position the frame-shaped workpiece in the first direction.
[0087] Similarly, the second driving assembly 500 includes a second driving device 510 and a second driving member 520; wherein the second driving device 510 is arranged on the bottom plate 600; the second driving member 520 is provided with a left driving surface 521 and a right driving surface 522; at least part (follower) of the left positioning member 410 is in contact with the left driving surface 521, and at least part (follower) of the right positioning member 420 is in contact with the right driving surface 522, wherein when the second driving device 510 drives the second driving member 520 to move along the second direction, the left positioning member 410 slides relative to the left driving surface 521, the right positioning member 420 slides relative to the right driving surface 522, and the left positioning member 410 and the right positioning member 420 approach or move away from each other in the second direction.
[0088] In other words, the left positioning member 410 and the right positioning member 420 have opposite movement directions, so that the positioning column of the left positioning member 410 can exert a leftward force on the left end of the frame-shaped workpiece, and the positioning column of the right positioning member 420 can exert a rightward force on the right end of the frame-shaped workpiece, at this time, the left positioning member 410 and the right positioning member 420 can position the frame-shaped workpiece in the second direction.
[0089] The left spring 430 is installed between the left positioning member 410 and the side wall of the left guide groove, and the right spring 440 is installed between the right positioning member 420 and the side wall of the right guide groove, and the reset force provided by the left spring 430 and the right spring 440 is used to make the left positioning member 410 and the right positioning member 420 have a mutual approaching tendency.
[0090] Specifically, as shown in Figure 4 The left spring 430 is located on the left side of the left positioning member 410, and the left spring 430 is in a pre-compressed state, so that the left spring 430 can exert a rightward force on the left positioning member 410; similarly, the right spring 440 is located on the right side of the right positioning member 420, and the right spring 440 is in a pre-compressed state, so that the right spring 440 can exert a leftward force on the right positioning member 420. Therefore, when the second driving member 520 returns to the initial position, the left positioning member 410 and the right positioning member 420 will approach each other and move away from the frame-shaped workpiece.
[0091] As shown in Figure 5 To realize positioning of another frame-shaped workpiece, the positioning device of the present disclosure can further include a third driving assembly 800, which has a similar structure to the first driving assembly 300 and is symmetrically arranged. At the same time, the front and rear positioning assembly 200 of the present disclosure is arranged as two, and the other front and rear positioning assembly 200 is driven by the third driving assembly 800, so that the front and rear directions of another frame-shaped workpiece can be positioned by the front and rear positioning assembly. Similarly, the left and right positioning assemblies of the present disclosure are arranged as two, and the other left and right positioning assembly can be driven by the second driving assembly 500, so that the left and right directions of a frame-shaped workpiece are positioned.
[0092] Unlike the external positioning method in the prior art, the positioning device of the present disclosure realizes positioning of the frame-shaped workpiece by the internal positioning method, and solves the technical problems mentioned in the background art.
[0093] In the description of the specification, the description of the terms "one embodiment / way", "some embodiments / ways", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment / way or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments / ways or examples. In addition, the person skilled in the art can combine and combine the different embodiments / ways or examples described in the specification and the features of the different embodiments / ways or examples, without contradiction.
[0094] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0095] The person skilled in the art should understand that the above-mentioned embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present disclosure.
Claims
1. A positioning device for positioning a frame-shaped workpiece, characterized by, The application relates to a frame-shaped workpiece positioning device, which comprises the following parts: a workbench, wherein first-direction through holes and second-direction through holes are formed in the workbench; the frame-shaped workpiece is arranged on the workbench, and the interior of the frame-shaped workpiece comprises two first-direction through holes and two second-direction through holes; a front-and-back positioning assembly, at least part of the front-and-back positioning assembly passes through the first-direction through holes from below and is located in the interior of the frame-shaped workpiece; a first driving assembly, which is used for driving the front-and-back positioning assembly so that the front-and-back positioning assembly can apply positive pressure of a first direction to the inner wall of the frame-shaped workpiece; a left-and-right positioning assembly, at least part of the left-and-right positioning assembly passes through the second-direction through holes from below and is located in the interior of the frame-shaped workpiece; a second driving assembly, which is used for driving the left-and-right positioning assembly so that the left-and-right positioning assembly can apply positive pressure of a second direction to the inner wall of the frame-shaped workpiece.
2. The positioning device of claim 1, wherein, The application further comprises: a bottom plate, which is used for bearing the workbench, wherein the bottom plate is also used for guiding the movement of the front-and-back positioning assembly and the left-and-right positioning assembly.
3. The positioning device of claim 2, wherein, The front-and-back positioning assembly comprises front positioning members and back positioning members; front guiding grooves and back guiding grooves are formed in the bottom plate, the front positioning members are slidably arranged in the front guiding grooves, and the back positioning members are slidably arranged in the back guiding grooves.
4. The positioning device of claim 3, wherein, The first driving assembly comprises: a first driving device, which is arranged on the bottom plate; and a first driving member, which is provided with front driving grooves and back driving grooves; at least part of the front positioning members is located in the front driving grooves, and at least part of the back positioning members is located in the back driving grooves, wherein when the first driving device drives the first driving member to move in a second direction, the front positioning members slide in the front driving grooves, the back positioning members slide in the back driving grooves, and the front positioning members and the back positioning members approach or move away from each other.
5. The positioning device of claim 2, wherein, The left-and-right positioning assembly comprises left positioning members and right positioning members; left guiding grooves and right guiding grooves are formed in the bottom plate, the left positioning members are slidably arranged in the left guiding grooves, and the right positioning members are slidably arranged in the right guiding grooves.
6. The positioning device of claim 5, wherein, The second driving assembly comprises: a second driving device, which is arranged on the bottom plate; and a second driving member, which is provided with a left driving surface and a right driving surface; at least part of the left positioning members is in contact with the left driving surface, and at least part of the right positioning members is in contact with the right driving surface, wherein when the second driving device drives the second driving member to move in a first direction, the left positioning members slide relative to the left driving surface, the right positioning members slide relative to the right driving surface, and the left positioning members and the right positioning members approach or move away from each other.
7. The positioning device of claim 6, wherein, A left spring is arranged between the left positioning members and the side wall of the left guiding groove, a right spring is arranged between the right positioning members and the side wall of the right guiding groove, and the reset force provided by the left spring and the right spring is used for making the left positioning members and the right positioning members have a mutual approaching tendency.
8. The positioning device of claim 1, wherein, The workbench is provided with a mounting hole, and a photoelectric sensor is arranged in the mounting hole.
9. The positioning device of claim 1, wherein, The workbench is provided with a plurality of guide blocks, the guide blocks define a space for placing a frame-shaped workpiece, and the guide blocks are used for guiding the frame-shaped workpiece to enter the space.
10. The positioning device of claim 1, wherein, The workbench is provided with a support block, and the support block is used for supporting the frame-shaped workpiece.