CN217345137U - Positioning device - Google Patents

Abstract

A positioning device is used for centering and positioning a product and comprises a base, two first positioning blocks, two second positioning blocks and a floating mechanism. The two first positioning blocks are connected with the base in a sliding mode along a first direction, and first inclined wedge surfaces are arranged on opposite sides of the two first positioning blocks respectively. The two second positioning blocks are connected with the base in a sliding mode along the second direction, and second inclined wedge surfaces are arranged on opposite sides of the two second positioning blocks respectively. The floating mechanism includes a first slider, a second slider, and a first elastic member. The first floating block is connected with the base in a sliding mode along a third direction and provided with two third oblique wedge surfaces, and the two third oblique wedge surfaces correspond to the first oblique wedge surfaces one to one. The second floating block is connected with the first floating block in a sliding mode along the third direction, two fourth inclined wedge surfaces are arranged on the second floating block, and the two fourth inclined wedge surfaces correspond to the second inclined wedge surfaces one to one. The first elastic piece elastically abuts against the second floating block along the third direction. The positioning device can realize the asynchronous centering function.

Description

Positioning device

Technical Field

The application relates to the technical field of processing, in particular to a positioning device.

Background

When products such as a shell are processed, the center of the product needs to be positioned by using a positioning device so as to ensure the operation precision. The existing positioning device comprises positioning blocks in multiple directions, the positioning blocks synchronously move, when one direction is centered and stopped, the positioning blocks in the other direction can also stop moving, the mode is only suitable for products with inner cavities of specifications and shapes, and products with special-shaped inner cavities or inner cavities with large size tolerance can only be centered in one direction, so that the requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a positioning apparatus that can implement asynchronous centering.

The embodiment of the application provides a positioning device for divide well location product, positioning device includes base, two first locating pieces, two second locating pieces and floating machanism. The two first positioning blocks are oppositely arranged along a first direction and are connected with the base in a sliding mode, and first inclined wedge surfaces are respectively arranged on opposite sides of the two first positioning blocks. The two second positioning blocks are oppositely arranged along a second direction and are connected with the base in a sliding mode, second tapered wedge surfaces are respectively arranged on opposite sides of the two second positioning blocks, and the first direction and the second direction are arranged in a crossed mode. The floating mechanism comprises a first floating block, a second floating block and a first elastic piece. The first floating block is connected with the base in a sliding mode along a third direction, the third direction is perpendicular to the first direction and the second direction, the first floating block is provided with two third oblique wedge surfaces which are oppositely arranged along the first direction, and the two third oblique wedge surfaces are in one-to-one corresponding sliding connection with the first oblique wedge surfaces. The second floating block is connected with the first floating block in a sliding mode along the third direction, two fourth inclined wedge surfaces which are oppositely arranged along the second direction are arranged on the second floating block, and the two fourth inclined wedge surfaces are in one-to-one corresponding sliding connection with the second inclined wedge surfaces. The first elastic piece is arranged between the first floating block and the second floating block and elastically abuts against the second floating block along the third direction.

In some embodiments of the present application, the positioning device further includes two second elastic members and two third elastic members, each of the second elastic members is disposed between one of the first positioning blocks and the base, the second elastic member elastically supports the first oblique wedge surface against the third oblique wedge surface, each of the third elastic members is disposed between one of the second positioning blocks and the base, and the third elastic member elastically supports the second oblique wedge surface against the fourth oblique wedge surface.

In some embodiments of the present application, the first slider orientation one side of second slider is equipped with the edge the first concave part that the third direction extends, first concave part is followed the both sides of second direction link up the setting, the part of second slider is inlayed and is located in the first concave part, and can slide in the first concave part, first elastic component one end elasticity top is supported the diapire of first concave part, and other end elasticity top is supported the second slider.

In some embodiments of the present application, the floating mechanism further includes a limiting rod, one end of the limiting rod is fixedly connected to the bottom wall of the first concave portion, the other end of the limiting rod is extended along the third direction, the second floating block is slidably connected to the limiting rod in a limiting manner, and the first elastic piece is sleeved on the limiting rod and is arranged between the bottom wall of the first concave portion and the second floating block.

In some embodiments of the present application, one side of the second slider facing the first slider is provided with two extending portions extending along the third direction, the two extending portions are arranged at intervals along the second direction, and the bottom wall of the first recess is located between the two extending portions.

In some embodiments of the present application, the floating mechanism further includes a first driving member, the first driving member is connected to the base, and the first driving member is in transmission connection with the first slider and is used for driving the first slider to move along the third direction.

In some embodiments of this application, the base is equipped with the through-hole that sets up along the third direction, first slider with second slider slidable is located in the through-hole, the base has the first surface in the third direction on the first surface, the base is equipped with the edge two first spouts, two that first direction set up relatively first spout intercommunication the through-hole, two first locating piece slidable is located in the first spout, the base still is equipped with the edge two second spouts, two that second direction set up relatively second spout intercommunication the through-hole, two second locating piece slidable is located in the second spout.

In some embodiments of the present application, the positioning device further comprises a support covering the first surface, at least a portion of the support facing away from the first surface being for supporting the product in the third direction.

In some embodiments of the present application, the positioning device further includes at least two cam mechanisms, two of the cam mechanisms are symmetrically disposed along the central axis of the through hole, each of the cam mechanisms includes a cam member and a second driving member, the cam member is rotatably connected to the first surface, and the second driving member is connected to the base for driving the cam member to rotate and abut against the product.

In some embodiments of the present application, the first direction is perpendicular to the second direction.

In the positioning device, the first floating block slides along the third direction under the action of external force, and the elastic force of the first elastic piece is used for supporting the second floating block so as to enable the second floating block and the first floating block to synchronously move, so that the second floating block pushes the two second positioning blocks to slide so as to firstly center and position the product in the second direction. When the two second positioning blocks are in the middle position, the resistance of the product to the second floating block through the second positioning blocks is larger than the elastic force of the first elastic piece, and the first floating block continuously slides relative to the second floating block under the action of external force, so that the first floating block pushes the two first positioning blocks to slide and then performs the middle positioning on the product in the first direction. The positioning device can realize the asynchronous centering function.

Drawings

Fig. 1 is a schematic structural diagram of a positioning device according to an embodiment of the present application.

Fig. 2 is a disassembled schematic view of a positioning device according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a floating mechanism in a positioning device according to an embodiment of the present application.

Fig. 4 is a disassembled schematic view of a floating mechanism of a positioning device according to an embodiment of the present application.

Fig. 5 is a sectional view taken along a section line a-a of fig. 3.

Description of the main elements

Positioning device 100

Base 10

Through-hole 11

First surface 12

First sliding groove 121

The first accommodation groove 121a

Second chute 122

The second receiving groove 122a

Position limiting plate 13

First positioning block 20

First tapered wedge surface 21

First convex part 22

Second positioning block 30

Second tapered surface 31

Second convex portion 32

Floating mechanism 40

First slider 41

Third inclined wedge surface 411

First recess 412

Second slider 42

Fourth inclined wedge surface 421

Connecting hole 422

First position-limiting portion 423

Extension 424

First elastic member 43

Stopper rod 44

The second position-limiting portion 441

First driving member 45

Second elastic member 51

Third elastic member 52

Support member 60

Profile section 61

Cam mechanism 70

Cam member 71

Second driving member 72

Product 90

Inner cavity 91

First direction X

Second direction Y

Third direction Z

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "vertical," "horizontal," "left," "right," "top," "bottom," and the like as used herein are for illustrative purposes only and are not intended to limit the present application.

It will be appreciated that when describing the parallel/perpendicular arrangement of two components, the angle between the two components is allowed to have a tolerance of + -10% with respect to standard parallel/perpendicular.

The present application relates to a positioning in a center, and the following is a brief description of the concepts involved in the present application: the centering positioning means positioning the center of the product.

The embodiment of the application provides a positioner for divide well location product, positioner include base, two first locating pieces, two second locating pieces and relocation mechanism. The two first positioning blocks are oppositely arranged along a first direction and can be connected with the base in a sliding mode, and first inclined wedge surfaces are respectively arranged on opposite sides of the two first positioning blocks. The two second positioning blocks are oppositely arranged along the second direction and are connected with the base in a sliding mode, second tapered wedge surfaces are respectively arranged on opposite sides of the two second positioning blocks, and the first direction and the second direction are arranged in a crossed mode. The floating mechanism comprises a first floating block, a second floating block and a first elastic piece. The first floating block is connected with the base in a sliding mode along a third direction, the third direction is perpendicular to the first direction and the second direction, the first floating block is provided with two third oblique wedge surfaces which are oppositely arranged along the first direction, and the two third oblique wedge surfaces are in one-to-one corresponding sliding connection with the first oblique wedge surfaces. The second floating block is connected with the first floating block in a sliding mode along the third direction, two fourth inclined wedge surfaces which are oppositely arranged along the second direction are arranged on the second floating block, and the two fourth inclined wedge surfaces are in one-to-one corresponding sliding connection with the second inclined wedge surfaces. The first elastic piece is arranged between the first floating block and the second floating block and elastically abuts against the second floating block along the third direction.

In the positioning device, the first floating block slides along the third direction under the action of external force, and the elastic force of the first elastic piece is used for supporting the second floating block so as to enable the second floating block and the first floating block to synchronously move, so that the second floating block pushes the two second positioning blocks to slide so as to firstly divide and position the product in the second direction. When the two second positioning blocks are in the middle position, the resistance of the product to the second floating block through the second positioning blocks is larger than the elastic force of the first elastic piece, and the first floating block continuously slides relative to the second floating block under the action of external force, so that the first floating block pushes the two first positioning blocks to slide and then performs the middle positioning on the product in the first direction. The positioning device can realize the asynchronous centering function.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, a positioning device 100 according to an embodiment of the present application is used for centering and positioning a product 90. To illustrate the working principle of the positioning device 100, the product 90 is first briefly described, the product 90 is provided with an inner cavity 91, and the product 90 may be, but is not limited to, a housing.

Referring to fig. 2, the positioning device 100 includes a base 10, two first positioning blocks 20, two second positioning blocks 30, and a floating mechanism 40. The base 10 is used for carrying two first positioning blocks 20, two second positioning blocks 30 and a floating mechanism 40. The two first positioning blocks 20 are oppositely disposed along the first direction X and slidably connected to the base 10. The opposite sides of the two first positioning blocks 20 are respectively provided with a first inclined wedge surface 21. The two second positioning blocks 30 are oppositely arranged along the second direction Y and slidably connected to the base 10, and second tapered surfaces 31 are respectively disposed on opposite sides of the two second positioning blocks 30. The first direction X and the second direction Y are arranged crosswise.

Referring to fig. 3, 4 and 5, the floating mechanism 40 includes a first floating block 41, a second floating block 42 and a first elastic member 43. The first slider 41 is slidably connected to the base 10 along a third direction Z, which is arranged perpendicular to the first direction X and the second direction Y. The first slider 41 is provided with two third tapered wedge surfaces 411 which are oppositely arranged along the first direction X, and the two third tapered wedge surfaces 411 are in one-to-one corresponding sliding connection with the first tapered wedge surfaces 21.

When the first slider 41 slides along the third direction Z, the third tapered wedge surface 411 slides relative to the first tapered wedge surface 21, and pushes the two first positioning blocks 20 to synchronously slide along the first direction X to abut against the two side walls of the cavity 91 along the first direction X. And since the two first sliders 20 move the same distance in synchronism, the center of the product 90 in the first direction X is located at the centers of the two first sliders 20 (i.e., the centers of the first sliders 41).

The second slider 42 is slidably connected to the first slider 41 along the third direction Z, the second slider 42 is provided with two fourth tapered wedge surfaces 421 oppositely arranged along the second direction Y, and the two fourth tapered wedge surfaces 421 are in one-to-one corresponding sliding connection with the second tapered wedge surfaces 31.

When the second slider 42 slides along the third direction Z, the fourth tapered wedge surface 421 slides relative to the second tapered wedge surface 31, and pushes the two second positioning blocks 30 to synchronously slide along the second direction Y to abut against the two sidewalls of the cavity 91 along the second direction Y. And since the two second positioning blocks 30 move synchronously by the same distance, the center of the product 90 in the second direction Y is located at the centers of the two second positioning blocks 30 (i.e., the center of the first slider 41).

The products 90 are positioned in the first direction X in a centered mode through the two first positioning blocks 20, the products 90 are positioned in the second direction Y in a centered mode through the two second positioning blocks 30, the first direction X and the second direction Y are arranged in a crossed mode, the center of each product 90 is overlapped with the center of the corresponding first floating block 41, and therefore the products 90 are positioned in the centered mode.

The first elastic member 43 is disposed between the first slider 41 and the second slider 42, and elastically abuts against the second slider 42 along the third direction Z.

In the positioning device 100, during use, the first slider 41 slides along the third direction Z under the action of an external force, and the elastic force of the first elastic member 43 is used for supporting the second slider 42 so as to enable the second slider 42 and the first slider 41 to move synchronously, so that the second slider 42 pushes the two second positioning blocks 30 to slide to firstly center and position the product in the second direction Y. When the two second positioning blocks 30 are centered and in place, that is, when the two second positioning blocks 30 abut against the two side walls of the inner cavity 91 along the second direction Y, the resistance applied by the product 90 to the second floating block 42 through the second positioning blocks 30 is greater than the elastic force of the first elastic member 43, and the first floating block 41 continues to slide relative to the second floating block 42 under the external force, so that the first floating block 41 pushes the two first positioning blocks 20 to slide and then center-divide and position the product 90 in the first direction X.

In the positioning device 100, the product is centered and positioned in the second direction Y, and then the product 90 is centered and positioned in the first direction X, so as to implement the asynchronous centering function. Compared with the existing mode of synchronously centering in multiple directions, the positioning device is not only suitable for the product 90 with the inner cavity 91 in the specification shape, but also suitable for the product 90 with the special-shaped inner cavity 91 or the product 90 with the larger dimensional tolerance of the inner cavity 91, and the universality of the positioning device 100 is improved.

In some embodiments, the first direction X is disposed perpendicular to the second direction Y.

It will be appreciated that in some embodiments, the angle between the first direction X and the second direction Y may be one of 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, 105 °, 120 °, 135 °, 150 °, 165 °, etc.

Referring again to fig. 2, in some embodiments, the base 10 is provided with a through hole 11 disposed along the third direction Z, and the first slider 41 and the second slider 42 are slidably disposed in the through hole 11 to improve the stability of the first slider 41 and the second slider 42 along the third direction Z.

The base 10 has a first surface 12 in the third direction Z, and one end of the through hole 11 penetrates through the first surface 12. On the first surface 12, the base 10 is provided with two first sliding grooves 121 oppositely arranged along the first direction X, and the two first positioning blocks 20 are slidably arranged in the first sliding grooves 121. The two first sliding grooves 121 communicate with the through hole 11, so that the two third tapered surfaces 411 and the first tapered surfaces 21 are in one-to-one corresponding sliding connection. The base 10 further has two second sliding grooves 122 oppositely disposed along the second direction Y, and the two second positioning blocks 30 are slidably disposed in the second sliding grooves 122. The two second sliding grooves 122 are communicated with the through hole 11, so that the two fourth tapered surfaces 421 are in one-to-one corresponding sliding connection with the second tapered surfaces 31.

In some embodiments, the through hole 11 is located at the center of the first surface 12, and the two first sliding grooves 121 and the two second sliding grooves 122 are distributed and arranged with the through hole 11 as the center.

In some embodiments, the base 10 is further provided with a plurality of detachable limiting plates 13. The partial limit plate 13 covers the opening of the first sliding chute 121 in the third direction Z, so that the first positioning block 20 is slidably connected between the first sliding chute 121 and the limit plate 13 in a limit manner. The remaining part of the limit plate 13 covers the opening of the second sliding chute 122 in the third direction Z, so that the second positioning block 30 is slidably connected between the second sliding chute 122 and the limit plate 13 in a limiting manner.

In some embodiments, the positioning device 100 further comprises two second elastic members 51 and two third elastic members 52. Each second elastic member 51 is disposed between one first positioning block 20 and the base 10, and the second elastic member 51 elastically pushes the first tapered surface 21 against the third tapered surface 411. Each third elastic element 52 is disposed between one second positioning block 30 and the base 10, and the third elastic element 52 elastically pushes the second inclined wedge surface 31 against the fourth inclined wedge surface 421.

In some embodiments, the bottom wall of the first sliding chute 121 is provided with a first accommodating groove 121a, and the first positioning block 20 is provided with a first protrusion 22 extending into the first accommodating groove 121 a. The second elastic member 51 is disposed in the first receiving groove 121a, one end of the second elastic member 51 elastically abuts against a groove wall of the first receiving groove 121a, and the other end elastically abuts against the first protrusion 22, so that the second elastic member 51 elastically abuts against the first floating block 20 toward the first floating block 41.

The bottom wall of the second sliding slot 122 is provided with a second receiving slot 122a, and the second positioning block 30 is provided with a second protrusion 32 extending into the second receiving slot 122 a. The third elastic element 52 is disposed in the second receiving groove 122a, one end of the third elastic element 52 elastically abuts against a groove wall of the second receiving groove 122a, and the other end elastically abuts against the second protrusion 32, so that the third elastic element 52 elastically abuts against the second positioning block 30 toward the second floating block 42.

Referring again to fig. 1 and 2, in some embodiments, the positioning device 100 further includes a supporting member 60, and the supporting member 60 covers the first surface 12. At least a portion of the support 60 facing away from the first surface 12 is intended to support the product 90 in the third direction Z, i.e. to support a top wall of the cavity 91 along the third direction Z. Two first positioning blocks 20 may extend from between the supporting member 60 and the base 10, and two second positioning blocks 30 may extend from between the supporting member 60 and the base 10 to respectively abut against the sidewalls of the inner cavity 91.

In some embodiments, the side of the support 60 facing away from the first surface 12 is provided with a profile 61, the profile 61 being profiled with a top wall of the cavity 91 in the third direction Z to improve the accuracy of the positioning.

Referring again to fig. 3, 4 and 5, in some embodiments, a side of the first slider 41 facing the second slider 42 is provided with a first recess 412 extending in the third direction Z. The first recess 412 is provided to penetrate along both sides in the second direction Y. A portion of the second slider 42 is embedded in the first recess 412 and is slidable in the first recess 412 to improve stability of sliding of the first slider 41 relative to the second slider 42. Specifically, both sides of the second slider 42 in the second direction Y are exposed from both sides of the first recess 412 in the second direction Y, and both sides of the second slider 42 in the first direction X are slidably connected to both sides of the first recess 412 in the first direction X, respectively.

One end of the first elastic member 43 elastically abuts against the bottom wall of the first concave portion 412, and the other end elastically abuts against the second floating block 42, so as to elastically abut against the second floating block 42 along the third direction Z.

In some embodiments, the floating mechanism 40 further includes a limiting rod 44, and one end of the limiting rod 44 is fixedly connected to the bottom wall of the first recess 412, and the other end extends along the third direction Z. The second slider 42 is slidably coupled to a stopper rod 44. Specifically, the second slider 42 is provided with a connection hole 422 penetrating in the third direction Z, and the stopper rod 44 passes through the connection hole 422. The second floating block 42 is further provided with a first limiting portion 423 protruding from the hole wall of the connecting hole 422, a second limiting portion 441 protruding from one end of the limiting rod 44 penetrating through the first limiting portion 423, the second limiting portion 441 is used for clamping the first limiting portion 423, so that the second floating block 42 can be slidably limited and connected to the limiting rod 44.

The first elastic member 43 is sleeved on the limiting rod 44 and is disposed between the bottom wall of the first recess 412 and the second slider 42. When the resistance of the product 90 applied to the second slider 42 by the second positioning block 30 is greater than the elastic force of the first elastic member 43, the first slider 41 continues to slide relative to the second slider 42 under the external force, the first slider 41 drives the limiting rod 44 to move relative to the second slider 42, and the second limiting portion 441 is away from the first limiting portion 423. After the external force is removed, the elastic force of the first elastic member 43 resets the first slider 41 relative to the second slider 42, so that the second position-limiting portion 441 holds the first position-limiting portion 423.

In some embodiments, the second slider 42 is provided with two extensions 424 extending along the third direction Z on a side facing the first slider 41, and the two extensions 424 are spaced apart along the second direction Y. The bottom wall of the first recess 412 is located between the two extensions 424 to further improve the stability of the sliding of the first slider 41 relative to the second slider 42. In some embodiments, the bottom wall of the first recess 412 slides along two extensions 424 along two sides of the second direction Y.

In some embodiments, the floating mechanism 40 further includes a first driving member 45, the first driving member 45 is connected to the base 10, and the first driving member 45 is in transmission connection with the first slider 41 for driving the first slider 41 to move along the third direction Z. In some embodiments, the first drive member 45 is a cylinder or a motor.

Referring again to fig. 1, in some embodiments, the positioning device 100 further includes at least two cam mechanisms 70. The two cam mechanisms 70 are symmetrically arranged along the central axis of the through-hole 11. Each cam mechanism 70 comprises a cam member 71 and a second driving member 72, the cam member 71 being rotatably connected to the first surface 12, the second driving member 72 being connected to the base 10 for driving the cam member 71 to rotate and abut against the product 90, so as to further improve the centering accuracy of the positioning device 100. Specifically, the two cam mechanisms 70 are rotated simultaneously through the same angle so that the center of the product 90 is located at the center of the two cam mechanisms 70.

In some embodiments, the positioning device 100 further comprises four cam mechanisms 70, and two cam mechanisms 70 are grouped and symmetrically arranged.

In the positioning device 100, the first slider 41 slides along the third direction Z under the action of an external force, and the elastic force of the first elastic member 43 is used for supporting the second slider 42 so as to enable the second slider 42 and the first slider 41 to move synchronously, so that the second slider 42 pushes the two second positioning blocks 30 to slide to firstly center and position the product in the second direction Y. When the two second positioning blocks 30 are centered in place, the resistance exerted by the product 90 on the second floating block 42 through the second positioning blocks 30 is greater than the elastic force of the first elastic member 43, and the first floating block 41 continues to slide relative to the second floating block 42 under the action of an external force, so that the first floating block 41 pushes the two first positioning blocks 20 to slide and then center the product 90 in the first direction X. The positioning apparatus 100 can implement asynchronous centering function. Compared with the existing mode of synchronously dividing in multiple directions, the positioning device is not only suitable for the product 90 with the inner cavity 91 in the specification and shape, but also suitable for the product 90 with the special-shaped inner cavity 91 or the product 90 with the larger dimensional tolerance of the inner cavity 91, and the universality of the positioning device 100 is improved.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present application and are not to be taken as limiting the present application, and that suitable changes and modifications to the above embodiments are within the scope of the present disclosure as long as they are within the spirit and scope of the present application.

Claims (10)

1. The utility model provides a positioner for divide well location product, positioner includes the base, its characterized in that: the positioning device further comprises:

the two first positioning blocks are oppositely arranged along a first direction and are connected with the base in a sliding manner, and one opposite sides of the two first positioning blocks are respectively provided with a first inclined wedge surface;

the two second positioning blocks are oppositely arranged along a second direction and are connected with the base in a sliding manner, second inclined wedge surfaces are respectively arranged on opposite sides of the two second positioning blocks, and the first direction and the second direction are arranged in a crossed manner;

a floating mechanism including a first floating block, a second floating block and a first elastic member,

the first floating block is connected with the base in a sliding mode along a third direction, the third direction is perpendicular to the first direction and the second direction, the first floating block is provided with two third inclined wedge surfaces which are oppositely arranged along the first direction, and the two third inclined wedge surfaces are in one-to-one corresponding sliding connection with the first inclined wedge surfaces;

the second floating block is connected with the first floating block in a sliding manner along the third direction, the second floating block is provided with two fourth tapered wedge surfaces which are oppositely arranged along the second direction, and the two fourth tapered wedge surfaces are in one-to-one corresponding sliding connection with the second tapered wedge surfaces;

the first elastic piece is arranged between the first floating block and the second floating block and elastically abuts against the second floating block along the third direction.

2. The positioning device of claim 1, wherein: the positioning device further comprises two second elastic pieces and two third elastic pieces, each second elastic piece is arranged between one first positioning block and the base, the first inclined wedge face is elastically abutted against the third inclined wedge face by the second elastic pieces, each third elastic piece is arranged between one second positioning block and the base, and the second inclined wedge face is elastically abutted against the fourth inclined wedge face by the third elastic pieces.

3. The positioning device of claim 1, wherein: one side of the first floating block, facing the second floating block, is provided with a first concave part extending along the third direction, the first concave part is arranged along two sides of the second direction in a penetrating manner, part of the second floating block is embedded in the first concave part and can slide in the first concave part, one end of the first elastic piece elastically abuts against the bottom wall of the first concave part, and the other end elastically abuts against the second floating block.

4. The positioning device of claim 3, wherein: the floating mechanism further comprises a limiting rod, one end of the limiting rod is fixedly connected with the bottom wall of the first concave portion, the other end of the limiting rod extends in the third direction, the second floating block can be slidably and limitedly connected with the limiting rod, and the first elastic piece is sleeved on the limiting rod and is arranged between the bottom wall of the first concave portion and the second floating block.

5. The positioning device of claim 3, wherein: one side of the second floating block, facing the first floating block, is provided with two extending portions extending along the third direction, the two extending portions are arranged at intervals along the second direction, and the bottom wall of the first concave portion is located between the two extending portions.

6. The positioning device of claim 1, wherein: the floating mechanism further comprises a first driving piece, the first driving piece is connected with the base, and the first driving piece is in transmission connection with the first floating block and used for driving the first floating block to move along the third direction.

7. The positioning device of claim 1, wherein: the base is equipped with the through-hole that sets up along the third direction, first slider with second slider slidable ground is located in the through-hole, the base has the first surface in the third direction on the first surface, the base is equipped with the edge two first spouts that the first direction set up relatively, two first spout intercommunication the through-hole, two first locating piece slidable ground is located in the first spout, the base still is equipped with the edge two second spouts that the second direction set up relatively, two second spout intercommunication the through-hole, two second locating piece slidable ground is located in the second spout.

8. The positioning device of claim 7, wherein: the positioning device further comprises a support covering the first surface, at least a portion of the support facing away from the first surface for supporting the product in the third direction.

9. The positioning device of claim 7, wherein: the positioning device further comprises at least two cam mechanisms, the two cam mechanisms are symmetrically arranged along the central axis of the through hole, each cam mechanism comprises a cam piece and a second driving piece, the cam piece is rotatably connected to the first surface in a first connection mode, and the second driving piece is connected to the base and used for driving the cam piece to rotate and abut against the product.

10. The positioning device of claim 1, wherein: the first direction is perpendicular to the second direction.

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