Positioning mechanism

Abstract

The utility model discloses a positioning mechanism. The positioning mechanism comprises a first support, a supporting assembly, two second supports and two positioning assemblies. After the target object is located on the supporting assembly, the two positioning assemblies can conduct contact positioning on the two ends, in the first direction, of the target object. A positioning part and a supporting shaft are arranged in the positioning assembly, and the positioning part is connected to the end of the supporting shaft in a sleeving mode and rotationally connected with the supporting shaft. Therefore, in the rotating process of the target object, the positioning parts in the two positioning assemblies can be driven by the rotating target object, so that the two positioning assemblies and the target object are relatively static, and the risk that the contact surface of the target object and the positioning mechanism is damaged can be reduced; and the situation that the target object cannot rotate due to the fact that the target object is limited too tightly in a mechanical limiting mode is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of positioning devices, in particular to a positioning mechanism. BACKGROUND

[0002] At present, a positioning mechanism directly fixes and limits a target object through mechanical limiting, so for a target object that needs to rotate, the positioning mechanism does not drive the target object during rotation of the target object.

[0003] However, the contact surface of the above positioning mechanism with the target object is prone to damage during rotation of the target object, and the positioning mechanism may also cause the target object to be too tightly limited to rotate. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a positioning mechanism. The technical solution is as follows:

[0005] The positioning mechanism comprises a first support, a supporting assembly, two second supports and two positioning assemblies.

[0006] The supporting assembly is located on the first support, and the supporting assembly is used to support a cylindrical target object.

[0007] The two second supports are respectively located on the two sides of the first support in a first direction, and the first direction is parallel to the axial direction of the target object.

[0008] The two positioning assemblies are respectively located on the two second supports, each positioning assembly comprises a supporting shaft and a positioning part, the supporting shaft is connected with the second support, and the positioning part is sleeved on the end of the supporting shaft and is rotationally connected with the supporting shaft.

[0009] At least one of the positioning assemblies is configured to move in a direction towards the target object after the target object is located on the supporting assembly, so that two positioning parts in the two positioning assemblies are respectively in abutment with two ends of the target object and synchronously rotate with the target object.

[0010] Optionally, the two positioning assemblies are a first positioning assembly and a second positioning assembly.

[0011] The second support corresponding to the first positioning assembly comprises a support body and a mounting plate, the mounting plate is connected with the support body, and the mounting plate can move relative to the support body in the first direction, and the supporting shaft in the first positioning assembly is fixed on the mounting plate.

[0012] The supporting shaft in the second positioning assembly is fixed on the corresponding second support.

[0013] Optionally, the second support corresponding to the first positioning assembly further comprises at least one buffer elastic part, two ends of the at least one buffer elastic part are respectively elastically connected with the support body and the mounting plate in the first direction.

[0014] Optionally, one side of the support body towards the mounting plate has a fixing plate, the fixing plate has a mounting through hole; the buffer elastic part comprises a floating rod and an elastic element sleeved on the floating rod.

[0015] One end of the floating rod is fixedly connected with the mounting plate, the other end of the floating rod has a limiting piece, the fixing plate is sleeved on the floating rod through the mounting through hole, and the limiting piece is located on the side of the fixing plate away from the mounting plate; the elastic element is located between the mounting plate and the fixing plate, and two ends of the elastic element are respectively abutted with the mounting plate and the fixing plate.

[0016] Optionally, the positioning mechanism further comprises a first driving assembly, the first driving assembly is fixed on the support body, and the first driving assembly is connected with the first positioning assembly.

[0017] The first driving assembly is configured to drive the first positioning assembly to move in a direction towards the target object until a side of the target object away from the first positioning assembly is in contact with the positioning part in the second positioning assembly after the target object is located on the support assembly.

[0018] Optionally, the positioning assembly further comprises a rotating bearing, the rotating bearing is installed at the end of the support shaft, and the positioning part is sleeved outside the rotating bearing.

[0019] Optionally, one side of the positioning part away from the support shaft is a support plane; the positioning part has a mounting groove on the side away from the support plane, and at least part of the rotating bearing is located in the mounting groove.

[0020] Optionally, the support assembly comprises a plurality of rolling support parts, the plurality of rolling support parts can be divided into two groups of rolling support parts, one group of the rolling support parts comprises at least one rolling support part.

[0021] The two groups of rolling support parts are distributed in a second direction, the target object can be distributed between the two groups of rolling support parts in the second direction, and the second direction intersects the first direction.

[0022] Optionally, the first support comprises a first sub-support and a second sub-support which are spaced apart in the first direction.

[0023] Two of the rolling support parts are distributed in the first direction in a same group of the rolling support parts; and in the same group of the rolling support parts, one of the rolling support parts is connected with the first sub-bracket, and the other of the rolling support parts is connected with the second sub-bracket.

[0024] Optionally, the positioning mechanism further comprises a second driving assembly fixed on the first bracket and connected with the support assembly.

[0025] The second driving assembly is configured to drive the support assembly to move in a direction close to the two positioning assemblies until the target object is located between the two positioning assemblies in the first direction after the target object is located on the support assembly.

[0026] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0027] After the target object is located on the support assembly, the two positioning assemblies can contact and position the two ends of the target object in the first direction. The positioning assembly is provided with a positioning part and a support shaft, and the positioning part is sleeved on the end of the support shaft and is rotationally connected with the support shaft. Therefore, in the rotation process of the target object, the positioning part in the two positioning assemblies can be driven by the rotating target object to follow the movement, so that the two positioning assemblies and the target object are relatively stationary, thereby reducing the risk of damage to the contact surface of the target object and the positioning mechanism, and avoiding the situation that the mechanical limiting mode limits the target object too tightly to make the target object unable to rotate. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 is a schematic diagram of a three-dimensional structure of a positioning mechanism provided by the embodiments of the present application;

[0030] Figure 2 is Figure 1 is a partial top view of the positioning mechanism provided by the present application at Q1;

[0031] Figure 3 is an exploded schematic diagram of a positioning assembly provided by the embodiments of the present application;

[0032] Figure 4 is Figure 3 is a structural schematic diagram of a positioning part in the positioning assembly provided by the present application;

[0033] Figure 5 is a schematic diagram of another positioning mechanism provided by an embodiment of the present application;

[0034] Figure 6 is a schematic diagram of another positioning mechanism provided by an embodiment of the present application;

[0035] Figure 7 is Figure 6 is a partial enlarged view of the positioning mechanism provided by the present application at Q2.

[0036] The specific embodiments of the present application have been shown in the above-described drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application concept in any way, but to illustrate the present application concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0038] In the related art, the positioning method for the target object usually adopts instantaneous positioning or hard stop positioning. The instantaneous positioning is a positioning method in which the positioning mechanism only contacts the target object for a very short time, and the positioning mechanism is immediately withdrawn after the positioning is completed. Therefore, for the target object that needs to be rotated, the positioning method has the risk that the target object is displaced during the rotation, resulting in poor final process effect. Moreover, the realization of calibration of the positioning mechanism is difficult, and it is difficult to ensure the consistency of the positioning mechanism each time it stops. The hard stop positioning is a positioning method in which the positioning mechanism directly fixes and limits the target object by mechanical limiting, and the positioning component is not driven with the target object during the rotation. Therefore, for the target object that needs to be rotated, the positioning method has the problem that the contact surface of the target object is damaged during the rotation, thereby causing other defects. Moreover, the hard stop positioning may cause the target object to be unable to rotate due to too tight limiting.

[0039] An embodiment of the present application provides a positioning mechanism, please refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of a positioning mechanism provided by an embodiment of the present application, Figure 2 is Figure 1 is a partial top view of the positioning mechanism provided by the present application at Q1. The positioning mechanism 000 includes a first support 100, a support component 200, two second supports 300 and two positioning components 400.

[0040] In the embodiments of the present application, the positioning mechanism 000 can be used to centrally position the target object A which needs to be rotated. For example, the target object A can be a cylindrical battery. In the process of pasting the adhesive on the cylindrical battery, the cylindrical battery needs to be rotated to ensure that its surface can be covered by the adhesive layer. Therefore, the positioning mechanism 000 can be used to rotate and position the cylindrical battery in the process of pasting the adhesive. However, the present application is not limited thereto.

[0041] The support assembly 200 is located on the first support 100, and the support assembly 200 is used to support the cylindrical target object A. Here, the first support 100 is used to mount the support assembly 200, and the specific structure of the first support 100 is not limited in the present application. The support assembly 200 can carry the target object A which needs to be rotated. For example, the contact surface of the support assembly 200 and the target object A can be curved, and then the support assembly 200 can be a cylindrical structure, so as to avoid the support assembly 200 from hindering the rotation of the target object A.

[0042] It should be noted that the embodiments of the present application do not strictly limit the shape of the target object A. For the target object A with other shapes, the positioning mechanism 000 can also position the target object A during the rotation of the target object A.

[0043] The two second supports 300 are respectively located on the two sides of the first support 100 in the first direction X, and the first direction X is parallel to the axial direction of the target object A. Here, the second support 300 can be used to mount the positioning assembly 400, and the specific structure of the second support 300 is not limited in the present application.

[0044] The two positioning assemblies 400 are respectively located on the two second supports 300, and each positioning assembly 400 includes a support shaft 410 and a positioning part 420. The support shaft 410 is connected with the second support 300, and the positioning part 420 is sleeved on the end of the support shaft 410 and is rotationally connected with the support shaft 410. Here, the positioning part 420 can rotate around the support shaft 410 as the rotation axis. In this way, during the rotation of the target object A, based on the friction between the positioning part 420 and the target object A, the positioning part 420 in contact with the target object A can rotate synchronously with the target object A. For example, the material of the positioning part 420 can include polyether ether ketone or ceramic.

[0045] Among them, at least one positioning assembly 400 is configured to move in the direction towards the target object A after the target object A is located on the support assembly 200, so that the two positioning parts 420 in the two positioning assemblies 400 respectively abut against the two ends of the target object A and rotate synchronously with the target object A.

[0046] Figure 1The pre-positioning state of the positioning mechanism 000 can be that the distance between the two positioning assemblies 400 is large and there is a certain spacing between the two positioning assemblies 400 and the target object A before positioning. Figure 2 The post-positioning state of the positioning mechanism 000 can be that at least one of the two positioning assemblies 400 moves in the direction towards the target object A during positioning to ensure that the two positioning portions 420 respectively abut the two ends of the target object A, so that the displacement of the target object A in the first direction X is limited, and the two positioning portions 420 can rotate synchronously with the target object A, thereby ensuring the stability of the target object A during rotation and reducing the risk of damage to the contact surface of the target object A and the positioning mechanism 000.

[0047] It should be noted that at least one of the two positioning assemblies 400 can move in the direction towards the target object A. That is, both of the two positioning assemblies 400 can move in the direction towards the target object A, and the two positioning assemblies 400 are movably connected to the corresponding two second supports 300. Alternatively, the position of one of the two positioning assemblies 400 is fixed, and the other positioning assembly 400 can move in the direction towards the target object A, and one of the two positioning assemblies 400 is movably connected to the corresponding second support 300. In both cases, the two positioning assemblies 400 can position the target object A.

[0048] In summary, the embodiment of the present application provides a support mechanism, in which after the target object is located on the support assembly, the two positioning assemblies can contact and position the two ends of the target object in the first direction. The positioning assembly is provided with a positioning portion and a support shaft, and the positioning portion is sleeved on the end of the support shaft and is rotationally connected with the support shaft. Therefore, during rotation of the target object, the positioning portions in the two positioning assemblies can be driven by the rotating target object to follow the target object, so that the two positioning assemblies and the target object are relatively stationary, thereby reducing the risk of damage to the contact surface of the target object and the positioning mechanism, and avoiding the situation that the mechanical limiting mode limits the target object too tightly to cause the target object to be unable to rotate.

[0049] The structure of the positioning assembly will be described below:

[0050] Please refer to Figure 3 , Figure 3 is an exploded schematic view of a positioning assembly provided by the embodiment of the present application. The positioning assembly 400 further comprises a rotary bearing 430 installed at the end of the support shaft 410, and the positioning portion 420 is sleeved outside the rotary bearing 430.

[0051] The rotating bearing 430 can reduce the friction and resistance of the positioning part 420 during rotation, so that the rotating movement of the positioning part 420 is smoother, thereby ensuring the rotation accuracy and stability of the positioning part 420. The rotating bearing 430 can also effectively prevent the support shaft 410 from being damaged due to bearing large load, so that the support shaft 410 remains in a correct position, thereby prolonging the service life of the positioning mechanism 000. Illustratively, the rotating bearing 430 can be a one-way rotating bearing, and the direction in which the rotating bearing 430 can rotate is consistent with the rotation direction of the target object A, so that the rotating bearing 430 can avoid hindering the rotation of the target object A. However, the present application is not limited thereto, and the rotating bearing 430 can also be a two-way rotating bearing.

[0052] The connection mode of the positioning part 420 and the rotating bearing 430 can be selected according to the actual working condition. Illustratively, the connection mode of the positioning part 420 and the rotating bearing 430 can include at least one of bolt connection, interference fit, riveting and adhesive connection.

[0053] Optionally, please refer to Figure 3 and Figure 4 , Figure 4 is Figure 3 a structural schematic view of a positioning part in a positioning assembly provided by the present application. The side of the positioning part 420 away from the support shaft 410 is a support plane 421. During the rotation positioning of the target object A, the support plane 421 is the contact surface of the target object A, and the contact surface is the support plane 421, which can avoid the influence of the positioning assembly 400 on the rotation of the target object A. The shape of the support plane 421 of the positioning part 420 shown in the above embodiment is circular, which can be adapted to the cylindrical target object A. In addition, the shape of the support plane 421 can also include but is not limited to square, diamond, triangle, polygon and the like.

[0054] The side of the positioning part 420 away from the support plane 421 has a mounting groove 422, and at least part of the rotating bearing 430 is located in the mounting groove 422. The shape and structure of the mounting groove 422 are matched with the rotating bearing 430, so as to facilitate the mounting of the positioning part 420 on the rotating bearing 430. Illustratively, the rotating bearing 430 has a boss, and the mounting groove 422 can be a stepped groove matched with the boss structure.

[0055] To this end, based on the structure of the positioning assembly 400 described above, the positioning part 420 can be caused to rotate synchronously with the target object A. On the one hand, compared with the instantaneous positioning in the related art, the positioning mechanism 000 provided in the present application can ensure the consistency and continuity of positioning and improve the accuracy of rotational positioning, thereby improving the product yield of the process to which the positioning mechanism 000 is applied. On the other hand, compared with the hard-limit positioning in the related art, the positioning mechanism 000 provided in the present application not only can reduce the risk of damaging the contact surface of the target object A to improve the product yield, but also can reduce the risk of hindering the rotation of the target object A to reduce the alarm frequency and the number of failures, thereby improving the productivity of the equipment to which the positioning mechanism 000 is applied.

[0056] The structure of the support assembly will be described below:

[0057] Optionally, referring to Figure 1 and Figure 2 , the support assembly 200 comprises a plurality of rolling support parts 210. The rolling support part 210 can comprise a rotating shaft and a roller sleeve, the rotating shaft being connected with the first support 110, and the roller sleeve being sleeved on the end portion outside the rotating shaft. In this way, when the target object A rotates, the rolling support part 210 can not only be used to support the target object A, but also can rotate synchronously with the target object A, so as to avoid hindering the rotation of the target object A, thereby reducing the alarm frequency and the number of failures and improving the productivity of the equipment to which the positioning mechanism 000 is applied.

[0058] The plurality of rolling support parts 210 can be divided into two groups of rolling support parts 210, and each group of rolling support parts 210 comprises at least one rolling support part 210. Among them, the two groups of rolling support parts 210 are distributed in the second direction Y, and the target object A can be distributed between the two groups of rolling support parts 210 in the second direction Y. The second direction Y intersects the first direction X. That is, the two groups of rolling support parts 210 can support the target object A on both sides thereof in the second direction Y. In the second direction Y, the distance between the two groups of rolling support parts 210 is less than the diameter of the target object A, so as to ensure the stability when the target object A is rotationally positioned.

[0059] Optionally, the first support 100 comprises first sub-supports 110 and second sub-supports 120 which are distributed at intervals in the first direction X.

[0060] The two rolling support parts 210 in one group of rolling support parts 210 are distributed in the first direction X. In the same group of rolling support parts 210, one rolling support part 210 is connected with the first sub-bracket 110, and the other rolling support part 210 is connected with the second sub-bracket 120. That is, the two rolling support parts 210 in one group of rolling support parts 210 are separately arranged, and the two rolling support parts 210 are respectively in contact with the two ends of the target object A in the first direction, so that the contact area with the target object A can be reduced on the basis of ensuring that the support assembly 200 has sufficient support for the target object A.

[0061] For example, when the positioning mechanism 000 is applied to the glue sticking process or the coating process of a cylindrical battery, the separate arrangement of the two rolling support parts 210 in one group of rolling support parts 210 can reduce the scratching of the support assembly 200 with the glue or the coating, thereby improving the product yield.

[0062] In an exemplary embodiment, referring to Figure 5 , Figure 5 is a schematic diagram of another positioning mechanism provided by the embodiment of the present application. The two positioning assemblies 400 are respectively a first positioning assembly 400a and a second positioning assembly 400b.

[0063] The second bracket 300 corresponding to the first positioning assembly 400a includes a bracket body 310 and a mounting plate 320, the mounting plate 320 is connected with the bracket body 310, and the mounting plate 320 can move relative to the bracket body 310 along the first direction X, and the support shaft 410 in the first positioning assembly 400a is fixed on the mounting plate 320. Here, the mounting plate 320 can make the first positioning assembly 400a float relative to the bracket body 310, so that there is a certain floating gap between the positioning part 420 in the first positioning assembly 400a and the target object A during the rotation of the target object A, thereby avoiding that the positioning assembly 400 is too tight to limit the target object A in the first direction X, and further avoiding the risk that the target object A cannot rotate.

[0064] The support shaft 410 in the second positioning assembly 400b is fixed on the corresponding second bracket 300. In this way, the positioning part 420 in the second positioning assembly 400b will not float in the first direction X, and the end face of the positioning part 420 in the second positioning assembly 400b towards the target object A can be used as a fixed reference surface, thereby ensuring the stability of the target object A during rotation, and the position of the target object A in the first direction X will not be too large, thereby improving the accuracy of positioning the target object A.

[0065] In the present application, various implementation manners can be adopted to fix the support shaft 410 in the first positioning assembly 400a and the second positioning assembly 400b on the second bracket 300. For example, the second bracket 300 has a mounting hole, and the end of the support shaft 410 away from the mounting portion 420 can pass through the mounting hole and be connected with a limiting piece to avoid the support shaft 410 from being separated from the second bracket 300. Here, the mounting hole in the second bracket 300 corresponding to the first positioning assembly 400a is distributed on the mounting plate 320.

[0066] Optionally, the second bracket 300 corresponding to the first positioning assembly 400a further comprises at least one buffer elastic portion 330, and the two ends of the at least one buffer elastic portion 330 in the first direction X are elastically connected with the bracket body 310 and the mounting plate 320, respectively. Here, the buffer elastic portion 330 can be a component with elasticity, and the direction in which the buffer elastic portion 330 elastically deforms can be parallel to the first direction X. In this way, when the first positioning assembly 400a abuts against the target object A, the buffer elastic portion 330 still has a margin of elastic deformation, so as to avoid the two ends of the target object A from being too tightly limited, thereby ensuring that the target object A can rotate.

[0067] Optionally, please refer to Figure 6 and Figure 7 , Figure 6 is a perspective structural schematic view of another positioning mechanism provided by the present application, Figure 7 is Figure 6 a partial enlarged view of the positioning mechanism at Q2. The side of the bracket body 310 facing the mounting plate 320 has a fixed plate 311, and the fixed plate 311 has a mounting through hole K1. The fixed plate 311 is used to fix the buffer elastic portion 330. For example, the plane in which the fixed plate 311 is located can be perpendicular to the first direction X, so as to facilitate the arrangement of the mounting through hole K1.

[0068] The buffer elastic portion 330 comprises a floating rod 331 and an elastic element 332 sleeved on the floating rod 331. One end of the floating rod 331 is fixedly connected with the mounting plate 320, and the other end of the floating rod 331 has a limiting piece 333. The fixed plate 311 is sleeved on the floating rod 331 through the mounting through hole K1, and the limiting piece 333 is located on the side of the fixed plate 311 away from the mounting plate 320. The elastic element 332 is located between the mounting plate 320 and the fixed plate 311, and the two ends of the elastic element 332 abut against the mounting plate 320 and the fixed plate 311, respectively.

[0069] The elastic element 332 can enable the mounting plate 320 to move relative to the support body 310 along the first direction X, so that the first limiting assembly 400a and the second limiting assembly 400b can cooperate to achieve floating limiting. The elastic element 332 can be in a compressed state, and the elastic element 332 can apply an elastic force to the mounting plate 320 to ensure that the positioning part 420 in the first positioning assembly 400a abuts one end of the target object A. In addition, the elastic element 332 also has a certain compression allowance to deform, so as to achieve floating, thereby ensuring that the target assembly A can rotate. For example, the elastic element 332 can be a spring.

[0070] The floating rod 331 is used to support the elastic element 332 and can limit the direction of elastic deformation of the elastic element 332, thereby improving the stability of the mounting plate 320 when floating relative to the second support 300. For example, the extension direction of the floating rod 331 can be parallel to the first direction X.

[0071] The limiting part 331 can limit one end of the floating rod 331 close to the fixed plate 311, so as to avoid the floating rod 331 from being separated from the fixed plate 311, thereby improving the structural stability of the buffer elastic part 330. The limiting part 331 can also adjust the length of the floating rod 331 distributed between the fixed plate 311 and the mounting plate 320, thereby adjusting the compression amount of the elastic element 332.

[0072] In the second support 300 corresponding to the first positioning assembly 400a, other buffer elastic parts 330 can also be arranged between the support body 310 and the mounting plate 320. For example, the buffer elastic part 330 provided by the present application can include at least one of a spring, a buffer cylinder and a rubber pad.

[0073] The buffer cylinder can convert the energy of compressed air into the reciprocating linear motion of the piston. For example, the motion direction of the piston in the buffer cylinder can be parallel to the first direction X. When the first positioning assembly 400a limits the target object A too tightly, the buffer cylinder can enable the first positioning assembly 400a to float in the first direction X, thereby ensuring that the target assembly A can rotate. The rubber pad has a certain elasticity and can avoid the problem of the first positioning assembly 400a limiting the target object A too tightly by elastic deformation, thereby ensuring that the target assembly A can rotate.

[0074] Optionally, the positioning mechanism 000 further includes a first driving assembly 500, and the first driving assembly 500 is fixed on the support body 310 and connected with the first positioning assembly 400a.

[0075] The first driving assembly 500 is configured to drive the first positioning assembly 400a to move in a direction towards the target object A until a side of the target object A away from the first positioning assembly 400a contacts the positioning part 420 in the second positioning assembly 400b after the target object A is located on the support assembly 200.

[0076] Since the end surface of the positioning part 420 in the second positioning assembly 400b towards the target object A can be used as a fixed reference surface, the position of the second positioning assembly 400b can be unchanged, and the positioning of the target object A can be achieved by only driving the first positioning assembly 400a to move by the first driving assembly 500.

[0077] The first driving assembly 500 can adopt a cam groove assembly, which can include a cam and a follower. One end of the follower moves along a curved trajectory, and the other end is connected with the first positioning assembly 400a, that is, the first positioning assembly 400a can be driven to move in a direction towards the target object A, so as to ensure that the two positioning assemblies 400 can abut against the target object A to achieve the positioning function. It should be noted that, Figure 6 The specific structure of the first driving assembly 500 is not shown, but the embodiments of the present application do not limit this.

[0078] The first driving assembly 500 can also include other transmission structures. For example, the first driving assembly 500 can also include a lead screw nut. The lead screw nut converts rotary motion into linear motion through the meshing of a screw rod and a nut. When the screw rod rotates, the nut will move axially along the screw rod to achieve linear motion. Therefore, the first positioning assembly 400a can also be driven to move in a direction towards the target object A by the lead screw nut.

[0079] In another exemplary embodiment, the second positioning assembly 400b can also be provided with a corresponding first driving assembly 500 to enable the second positioning assembly 400b to move in the first direction X, so as to adjust the position of the second positioning assembly 400b to adapt to various actual use scenarios of the device, thereby increasing the applicability and flexibility of the positioning mechanism 000.

[0080] Optionally, the positioning mechanism 000 further includes a second driving assembly 600, which is fixed on the first support 100 and connected with the support assembly 200.

[0081] The second driving assembly 600 is configured to drive the support assembly 200 to move in a direction close to the two positioning assemblies 400 until the target object A is located between the two positioning assemblies 400 in the first direction X after the target object A is located on the support assembly 200.

[0082] The second driving assembly 600 can adopt a slide table cylinder, which controls the movement of a piston in the cylinder by compressed air provided by an air source, so as to realize the pushing of the slide table. The slide table is connected with the support assembly 200, and thus can drive the support assembly 200 to move in the height direction. It should be noted that, Figure 6 The specific structure of the second driving assembly 600 is not shown, but the embodiments of the present application do not limit this. The second driving assembly 600 can also include other transmission structures. For example, the second driving assembly 600 can also include a lead screw nut, which will not be described in detail here.

[0083] In the present application, the positioning mechanism 000 can be used in various devices that need to rotate and position the target object A. By providing the second driving assembly 600 to drive the support assembly 200 to move in the height direction, the actual use scene working conditions of various devices can be adapted, so as to increase the applicability and flexibility of the positioning mechanism 000.

[0084] For example, the device applying the positioning mechanism 000 can include a clamping assembly for clamping the target object A, which can not be at the same height as the positioning assembly 400. After the clamping assembly places the target object A on the support assembly 200, the second driving assembly 600 can lift the target object A placed on the support assembly 200 upward, so that the target object A is located between the two positioning assemblies 400 in the first direction X, and the two end faces of the target object A in the first direction X are respectively opposite to the two positioning assemblies 400, so as to ensure that the two positioning assemblies 400 can abut against the target object A to realize the positioning function.

[0085] Optionally, the device applying the positioning mechanism 000 can also include a third driving assembly for driving the target object A to rotate. The action steps of the positioning mechanism 000 will be described below according to an exemplary embodiment:

[0086] The target object A is placed on the support assembly 200 by the clamping assembly, and the support assembly 200 is driven to move in the direction of approaching the two positioning assemblies 400 until the target object A is located between the two positioning assemblies 400 in the first direction X. The first driving assembly 500 drives the first positioning assembly 400a to move in the direction towards the target object A until the side of the target object A away from the first positioning assembly 400a contacts the positioning part 420 in the second positioning assembly 400b. According to the size of the target object A, the compression amount of the elastic element 332 is adjusted by the limiting piece 331 to ensure that the first positioning assembly 400a well positions the target object A. The target object A starts to rotate under the driving of the third driving assembly, and the positioning parts 420 in the two positioning assemblies 400 are synchronously rotated, so that the positioning mechanism 000 can realize real-time positioning of the target object A during rotation.

[0087] In summary, the embodiment of the present application provides a supporting mechanism, wherein, after the target object is located on the supporting assembly, the two positioning assemblies can contact and position the two ends of the target object in the first direction. The positioning assembly is provided with a positioning part and a supporting shaft, and the positioning part is sleeved on the end of the supporting shaft and rotationally connected with the supporting shaft. Therefore, in the rotation process of the target object, the positioning part in the two positioning assemblies can be driven by the rotating target object to follow the movement, so that the two positioning assemblies and the target object are relatively static, thereby reducing the risk of damage to the contact surface of the target object and the positioning mechanism, and avoiding the situation that the mechanical limiting mode limits the target object too tightly to cause the target object unable to rotate.

[0088] In the present application, the term "at least one of A and B" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, at least one of A and B can mean that A exists alone, A and B exist simultaneously, and B exists alone. Similarly, "at least one of A, B and C" means that there can be seven relationships, which can mean that A exists alone, B exists alone, C exists alone, A and B exist simultaneously, A and C exist simultaneously, C and B exist simultaneously, and A, B and C exist simultaneously. Similarly, "at least one of A, B, C and D" means that there can be fifteen relationships, which can mean that A exists alone, B exists alone, C exists alone, D exists alone, A and B exist simultaneously, A and C exist simultaneously, A and D exist simultaneously, C and B exist simultaneously, D and B exist simultaneously, C and D exist simultaneously, A, B and C exist simultaneously, A, B and D exist simultaneously, A, C and D exist simultaneously, B, C and D exist simultaneously, and A, B, C and D exist simultaneously.

[0089] It should be noted that in the drawings, the dimensions of layers and regions can be exaggerated for clarity. Also, it is to be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer, or intervening layers can also be present. Further, it is to be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or layer, or one or more intervening layers or elements can also be present. In addition, it is to be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer or element between the two layers or elements, or one or more intervening layers or elements can also be present. Similar reference numerals can indicate similar elements throughout the specification.

[0090] In the present application, the terms "first", "second" and "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance. The term "multiple" refers to two or more, unless otherwise explicitly limited.

[0091] The above merely provides the optional embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning mechanism, characterized by, The positioning mechanism comprises a first support, a support assembly, two second supports and two positioning assemblies; The support assembly is located on the first support, and the support assembly is used for supporting a cylindrical target object; The two second supports are respectively located on two sides of the first support in a first direction, and the first direction is parallel to the axial direction of the target object; The two positioning assemblies are respectively located on the two second supports, and each positioning assembly comprises a support shaft and a positioning part, the support shaft is connected with the second support, and the positioning part is sleeved on the end of the support shaft and is rotationally connected with the support shaft; At least one of the positioning assemblies is configured to move in a direction towards the target object after the target object is located on the support assembly, so that the two positioning parts of the two positioning assemblies are respectively in contact with two ends of the target object and rotate synchronously with the target object.

2. The positioning mechanism according to claim 1, characterized in that The two positioning assemblies are respectively a first positioning assembly and a second positioning assembly; The second support corresponding to the first positioning assembly comprises a support body and a mounting plate, the mounting plate is connected with the support body, and the mounting plate can move relative to the support body in the first direction, and the support shaft in the first positioning assembly is fixed on the mounting plate; The support shaft in the second positioning assembly is fixed on the corresponding second support.

3. The positioning mechanism according to claim 2, characterized in that The second support corresponding to the first positioning assembly further comprises at least one buffer elastic part, and the two ends of the at least one buffer elastic part in the first direction are respectively elastically connected with the support body and the mounting plate.

4. The positioning mechanism according to claim 3, characterized in that The side of the support body facing the mounting plate has a fixed plate, and the fixed plate has a mounting through hole; the buffer elastic part comprises a floating rod and an elastic element sleeved on the floating rod; One end of the floating rod is fixedly connected with the mounting plate, the other end of the floating rod has a limiting piece, the fixed plate is sleeved on the floating rod through the mounting through hole, and the limiting piece is located on the side of the fixed plate away from the mounting plate; the elastic element is located between the mounting plate and the fixed plate, and the two ends of the elastic element are respectively in contact with the mounting plate and the fixed plate.

5. A positioning mechanism according to any one of claims 2-4, characterized in that The positioning mechanism further comprises a first driving assembly, the first driving assembly is fixed on the support body, and the first driving assembly is connected with the first positioning assembly; The first driving assembly is configured to drive the first positioning assembly to move in a direction towards the target object after the target object is located on the support assembly, until the side of the target object away from the first positioning assembly is in contact with the positioning part in the second positioning assembly.

6. The positioning mechanism according to any one of claims 1 to 4, wherein The positioning assembly further comprises a rotating bearing, the rotating bearing is installed on the end of the support shaft, and the positioning part is sleeved outside the rotating bearing.

7. The positioning mechanism according to claim 6, characterized in that The side of the positioning part away from the support shaft is a support plane; the side of the positioning part away from the support plane has a mounting groove, and at least part of the rotating bearing is located in the mounting groove.

8. The positioning mechanism according to any one of claims 1 to 4, 7, wherein The support assembly comprises a plurality of rolling support parts, which can be divided into two groups of rolling support parts, one group of the rolling support parts comprising at least one rolling support part; The two groups of rolling support parts are distributed in a second direction, and the target object can be distributed between the two groups of rolling support parts in the second direction; the second direction intersects the first direction.

9. The positioning mechanism of claim 8, wherein, The first support comprises a first sub-support and a second sub-support distributed in the first direction; One group of the rolling support parts comprises two rolling support parts distributed in the first direction; and in the same group of the rolling support parts, one rolling support part is connected with the first sub-support, and the other rolling support part is connected with the second sub-support.

10. The positioning mechanism according to any one of claims 1-4, 7, 9, wherein The positioning mechanism further comprises a second driving assembly fixed on the first support and connected with the support assembly; The second driving assembly is configured to drive the support assembly to move in a direction close to the two positioning assemblies until the target object is located between the two positioning assemblies in the first direction after the target object is located on the support assembly.

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