Positioning device

Abstract

A positioning device comprises a supporting mechanism which comprises a base, a supporting plate connected to the base and a supporting assembly connected to the base; the driving mechanism is connected to the supporting mechanism and comprises a driving assembly connected to the supporting plate, a rotating shaft connected to the supporting plate and a first gear connected to the rotating shaft; the clamping mechanism is connected to the supporting mechanism and comprises a left clamping assembly and a right clamping assembly which are respectively connected to the supporting plate, the left clamping assembly comprises a left clamping piece which is in sliding connection with the supporting plate, and the right clamping assembly comprises a right clamping piece which is in sliding connection with the supporting plate; and the braking mechanism is connected to the supporting plate and corresponds to the rotating shaft. According to the positioning device, the workpieces of different sizes can be borne through the supporting assembly, the left clamping assembly and the right clamping assembly in the clamping mechanism are driven by the driving mechanism to get close to each other so that the workpieces can be clamped and positioned in the middle, the workpieces of different sizes can be positioned, the positioning precision is high, the operation efficiency is high, and the labor intensity is low.

Description

TECHNICAL FIELD

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

[0002] In many fields such as modern industrial production, processing and detection, stable clamping and accurate positioning of workpieces are crucial links, which directly affect the smooth progress of production process, the guarantee of processing precision and the accuracy of detection results. When clamping and positioning some workpieces, the workpieces are often positioned in the center for subsequent machining operation. The current positioning method is to manually clamp and position the workpiece by measuring the size of the workpiece by manual measurement. Manual measurement is prone to errors, which affects the precision of finished products. Moreover, different jigs need to be replaced for different sizes of workpieces, resulting in low efficiency and high labor intensity. CONTENT OF THE UTILITY MODEL

[0003] In view of the above, it is necessary to provide a positioning device. The support assembly can carry workpieces of different sizes. The left clamping assembly and the right clamping assembly in the clamping mechanism can be driven to move closer to each other by the driving mechanism, so as to centrally clamp and position the workpiece. Different sizes of workpieces can be positioned, and the positioning precision is high, the work efficiency is high and the labor intensity is low.

[0004] The embodiment of the present application provides a positioning device, which comprises a supporting mechanism, a driving mechanism, a clamping mechanism and a braking mechanism. The supporting mechanism comprises a base arranged horizontally, a supporting plate connected to the base and arranged vertically, and a supporting assembly connected to the base and arranged spaced apart from the supporting plate, and the supporting assembly supports a workpiece. The driving mechanism is connected to the supporting mechanism and comprises a driving assembly connected to the supporting plate, a rotating shaft penetrating through the supporting plate in a direction perpendicular to the supporting plate and rotationally connected to the supporting plate, and a first gear connected to one end of the rotating shaft close to the supporting assembly. The clamping mechanism is connected to the supporting mechanism and comprises a left clamping assembly and a right clamping assembly connected to one side of the supporting plate facing the supporting assembly. The left clamping assembly comprises a first rack arranged on the upper side of the first gear and meshed with the first gear, and a left clamping piece connected to one side of the first rack away from the supporting plate. The right clamping assembly comprises a second rack arranged on the lower side of the first gear and meshed with the first gear, and a right clamping piece connected to one side of the second rack away from the supporting plate. The left clamping piece and the right clamping piece are arranged on the two sides of the supporting assembly respectively at the ends away from the supporting plate. The braking mechanism is connected to the supporting plate and arranged correspondingly to the rotating shaft, and the braking mechanism limits the rotation of the rotating shaft when abutting against the rotating shaft. The driving assembly drives the rotating shaft to rotate forward or reversely, drives the first gear to drive the first rack and the second rack to move leftward or rightward, drives the left clamping piece and the right clamping piece to approach or move away from each other, and clamps or releases the workpiece on the supporting assembly.

[0005] The positioning device can support the workpiece through the supporting assembly in the supporting mechanism, and the base and the supporting plate of the supporting mechanism can provide stable support. The driving assembly in the driving mechanism can drive the rotating shaft and the first gear to rotate, drive the first gear to drive the first rack and the second rack to move, and make the left clamping piece on the first rack and the right clamping piece on the second rack approach or move away from each other, so as to centrally clamp the workpiece when the left clamping piece and the right clamping piece approach each other, and realize the positioning of the workpiece. The braking mechanism can abut against the rotating shaft to limit the rotation of the rotating shaft, thereby improving the stability of the left clamping piece and the right clamping piece when clamping and positioning the workpiece. The positioning device can centrally clamp and position the workpiece placed on the supporting assembly. As long as the workpiece can be placed on the supporting assembly and located between the left clamping piece and the right clamping piece, the positioning device is suitable for clamping and positioning workpieces of different sizes, has high positioning accuracy, is convenient to operate, does not need manual measurement of the size and position of the workpiece during positioning, and effectively improves work efficiency and reduces labor intensity.

[0006] In some embodiments, the left clamping assembly also includes a first sliding seat fixedly connected to the side of the support plate facing the support assembly, the first sliding seat is arranged above the first gear, and a first dovetail groove is provided on the side of the first sliding seat facing the first gear, and the extension direction of the first dovetail groove is parallel to the plane where the base is located and the plane where the support plate is located; a first dovetail protrusion adapted to the first dovetail groove is provided on the side of the first rack away from the first gear, and the first dovetail protrusion is slidably arranged in the first dovetail groove to make the first rack slidably connected to the first sliding seat.

[0007] In some embodiments, the right clamping assembly also includes a second sliding seat fixedly connected to the side of the support plate facing the support assembly, the second sliding seat is arranged below the first gear, and a second dovetail groove is provided on the side of the second sliding seat facing the first gear, and the extension direction of the second dovetail groove is parallel to the plane of the base and the plane of the support plate; a second dovetail protrusion adapted to the second dovetail groove is provided on the side of the second rack away from the first gear, and the second dovetail protrusion is slidably arranged in the second dovetail groove to make the second rack slidably connected to the second sliding seat.

[0008] In some embodiments, the driving assembly includes: a driving member, the output end of which is connected to the support plate in a vertical direction; a second gear, connected to the output end of the driving member and the second gear is arranged in a horizontal direction; a driving sliding seat, fixedly connected to the side of the support plate away from the support assembly, and the driving sliding seat is arranged above the rotating shaft; a driving rack, slidingly connected to the driving sliding seat, and the side of the driving rack close to the support plate is meshed with the second gear; and a third gear, connected to the end of the rotating shaft away from the first gear, and the third gear is meshed with the side of the driving rack away from the driving sliding seat; wherein, the driving member drives the second gear to rotate, the second gear drives the driving rack to slide, the driving rack drives the third gear to rotate, and the third gear drives the rotating shaft and the first gear to rotate.

[0009] In some embodiments, a driving dovetail groove is provided on the side of the driving sliding seat facing the base, and the extension direction of the driving dovetail groove is parallel to the plane where the base is located and the plane where the support plate is located; a third dovetail protrusion adapted to the driving dovetail groove is provided on the side of the driving rack away from the third gear, and the third dovetail protrusion is slidably provided in the driving dovetail groove to enable the driving rack to be slidably connected to the driving sliding seat.

[0010] In some embodiments, the brake mechanism comprises a brake assembly connected to one side of the support plate towards the support assembly, and a clamping assembly connected to the brake assembly, the brake assembly comprises a fixed member fixedly connected to the support plate, and a brake handle movably connected to the fixed member, one end of the brake handle is arranged towards the rotating shaft and rotatably connected to the clamping assembly, the brake handle drives the clamping assembly to move towards or away from the rotating shaft, so as to limit the rotation of the rotating shaft when the clamping assembly abuts against the rotating shaft.

[0011] In some embodiments, the clamping assembly comprises a connecting member rotatably connected to one end of the brake handle towards the rotating shaft, and a clamping member detachably connected to one side of the connecting member close to the rotating shaft, one side of the clamping member towards the rotating shaft is provided with a clamping groove matched with the rotating shaft.

[0012] In some embodiments, the support assembly comprises a support base connected to the base, and a bearing base detachably connected to one side of the support base away from the base, one side of the bearing base away from the support base is provided with a through groove for accommodating the workpiece, and the extension direction of the through groove is parallel to the plane where the base is located and the plane where the support plate is located.

[0013] In some embodiments, the bearing base is provided with a plurality of locking members penetrating the groove wall of the through groove, and each of the plurality of locking members is used to abut against the workpiece located in the through groove to fix the workpiece.

[0014] In some embodiments, the base is provided with a positioning strip abutting against the support base away from the support plate, and the positioning strip is used to stop the support base. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structural schematic diagram of a positioning device provided by the embodiments of the present application is shown.

[0016] Figure 2 A structural schematic diagram of a positioning device provided by the embodiments of the present application is shown. Figure 1 A structural schematic diagram of a positioning device provided by the embodiments of the present application is shown.

[0017] Figure 3 A structural schematic diagram of a positioning device provided by the embodiments of the present application is shown. Figure 1 A structural schematic diagram of a positioning device provided by the embodiments of the present application is shown.

[0018] Main element symbol explanation: positioning device 100, support mechanism 10, base 11, support plate 12, containing hole 121, support assembly 13, support seat 131, bearing seat 132, through slot 1321, locking piece 133, positioning strip 14, driving mechanism 20, driving assembly 21, driving piece 211, output end 2111, second gear 212, driving sliding seat 213, driving dovetail groove 2131, driving rack 214, third dovetail protrusion 2141, third gear 215, rotating shaft 22, first gear 23, clamping mechanism 30, left clamping assembly 31, first sliding seat 311, first dovetail groove 3111, first rack 312, first dovetail protrusion 3121, left clamping piece 313, right clamping assembly 32, second sliding seat 321, second dovetail groove 3211, second rack 322, second dovetail protrusion 3221, right clamping piece 323, brake mechanism 40, brake assembly 41, fixing piece 411, brake handle 412, clamping assembly 42, connecting piece 421, clamping piece 422, clamping groove 4221, workpiece 200. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components have the same or similar reference numbers throughout the drawings and a repeated explanation is omitted. The embodiments described below are examples for explaining the present application and should not be construed as limiting the present application.

[0020] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. 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 indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, it should be noted that the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection, an electrical connection, or mutual communication; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] See Figure 1 、 Figure 2 and Figure 3 The present invention provides a positioning device 100 for positioning a workpiece 200. The workpiece 200 is a rectangular parallelepiped. In this embodiment, the workpiece 200 is a raw material, meaning that the length, width, and height of the workpiece 200 may vary. The positioning device 100 includes a support mechanism 10, a drive mechanism 20 connected to the support mechanism 10, a clamping mechanism 30 connected to the support mechanism 10, and a braking mechanism 40 connected to the support mechanism 10.

[0024] In this example, see Figure 1 、 Figure 2 and Figure 3 The support mechanism 10 includes a horizontally arranged base 11, a vertically arranged support plate 12 connected to the base 11, a support assembly 13 connected to the base 11 and spaced apart from the support plate 12, and a positioning bar 14 connected to the base 11.

[0025] The base 11 is a plate-like structure that provides stable support for the support plate 12 and support assembly 13. The support plate 12 is a plate-like structure that provides stable support for the drive mechanism 20, the clamping mechanism 30, and the braking mechanism 40. The support plate 12 defines a receiving hole 121 that extends through the support plate 12 perpendicular to the plane in which the support plate 12 lies.

[0026] The support assembly 13 is used to support the workpiece 200. The support assembly 13 includes a support seat 131 connected to the base 11, a bearing seat 132 detachably connected to the side of the support seat 131 away from the base 11, and a plurality of locking members 133 connected to the bearing seat 132. A through groove 1321 for accommodating the workpiece 200 is provided on the side of the bearing seat 132 away from the support seat 131. The extension direction of the through groove 1321 is parallel to the plane where the base 11 is located and the plane where the support plate 12 is located.

[0027] The support base 131 is a block structure and is fixedly connected to the base 11 by bolts or the like. The bearing seat 132 is also a block structure and has a concave cross section. The bearing seat 132 is detachably connected to the support base 131, which makes the support assembly 13 capable of replacing the bearing seat 132 with a through slot 1321 matching the width of the workpiece 200, thereby improving the applicability of the support assembly 13 to workpieces 200 of different widths. The through slot 1321 is located in the middle of the upper end of the bearing seat 132, so that the side walls on both sides of the through slot 1321 can stably support the workpiece 200. The width of the through slot 1321 is greater than the width of the workpiece 200, so that the workpiece 200 can be placed in the through slot 1321 and can slide in the through slot 1321. The provision of the through slot 1321 can play a preliminary positioning role for the workpiece 200, so that the workpiece 200 can be placed on the bearing seat 132 in a predetermined direction, facilitating subsequent clamping operations.

[0028] The bearing seat 132 is provided with a plurality of locking members 133 penetrating the slot walls of the through slot 1321. The plurality of locking members 133 are used to abut against the workpiece 200 in the through slot 1321 to fix the workpiece 200. The locking member 133 is a flat head screw. The number of locking members 133 can be four, six, eight, etc. The same number of locking members 133 are symmetrically arranged on the two slot walls of the through slot 1321. After the workpiece 200 is clamped and positioned by the clamping mechanism 30, the workpiece 200 can be locked from the front and rear directions by the plurality of locking members 133, thereby improving the stability of the workpiece 200 during machining.

[0029] The base 11 is provided with a positioning strip 14 abutting against the support base 131 away from the support plate 12. The positioning strip 14 is used to stop the support base 131. The positioning strip 14 is a strip structure and can accurately stop the support base 131. When the support assembly 13 is installed, the positioning strip 14 provides a clear positioning reference for the support base 131, ensuring that the position of the support base 131 on the base 11 is accurate and correct, thereby providing a stable and accurate basis for the positioning of the workpiece 200 on the bearing seat 132 and subsequent machining. Through the stopping action of the positioning strip 14 on the support base 131, the support assembly 13 can better maintain the position of the support base 131 on the base 11 when subjected to external forces (such as cutting force, clamping force, etc. during machining), thereby avoiding displacement of the support base 131.

[0030] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The driving mechanism 20 is connected to the support mechanism 10. The driving mechanism 20 includes a driving assembly 21 connected to the support plate 12, a rotating shaft 22 penetrating the support plate 12 in a direction perpendicular to the support plate 12 and rotationally connected to the support plate 12, and a first gear 23 connected to one end of the rotating shaft 22 close to the support assembly 13.

[0031] The driving assembly 21 comprises a driving member 211 rotationally connected with the support plate 12, a second gear 212 connected with an output end 2111 of the driving member 211 and arranged in a horizontal direction, a driving sliding seat 213 fixedly connected with a side of the support plate 12 away from the support assembly 13 and arranged above the rotating shaft 22, a driving rack 214 in sliding connection with the driving sliding seat 213 and in mesh with the first gear 23, and a third gear 215 connected with an end of the rotating shaft 22 away from the first gear 23 and in mesh with a side of the driving rack 214 away from the driving sliding seat 213.

[0032] The output end 2111 of the driving member 211 is rotationally connected with the support plate 12 in a vertical direction, the driving member 211 is a hand wheel, and the driving member 211 is rotated to make the output end 2111 rotate forward or reverse. The second gear 212 is arranged in the accommodating hole 121 of the support plate 12, and the driving member 211 drives the second gear 212 to rotate forward or the driving member 211 drives the second gear 212 to rotate reverse. The driving sliding seat 213 is in a strip structure, a side of the driving sliding seat 213 facing the base 11 is provided with a driving dovetail groove 2131, and the extending direction of the driving dovetail groove 2131 is parallel to the plane where the base 11 is located and the plane where the support plate 12 is located. A side of the driving rack 214 close to the support plate 12 is in mesh with the second gear 212, a side of the driving rack 214 away from the driving sliding seat 213 is in mesh with the third gear 215, and a side of the driving rack 214 away from the third gear 215 is provided with a third dovetail protrusion 2141 matched with the driving dovetail groove 2131, and the third dovetail protrusion 2141 is slidingly arranged in the driving dovetail groove 2131, so that the driving rack 214 is in sliding connection with the driving sliding seat 213.

[0033] The driving member 211 drives the second gear 212 to rotate, the second gear 212 drives the driving rack 214 to slide along the driving dovetail groove 2131, the driving rack 214 drives the third gear 215 to rotate, and the third gear 215 drives the rotating shaft 22 and the first gear 23 to rotate, so that power transmission from the driving member 211 to the rotating shaft 22 is realized. This multi-stage transmission mode can convert the rotary motion of the driving member 211 into the rotation of the rotating shaft 22, thereby realizing the effect of accurately controlling the rotation of the first gear 23.

[0034] In the embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , the clamping mechanism 30 is connected with the supporting mechanism 10 and comprises a left clamping assembly 31 and a right clamping assembly 32 connected with a side of the support plate 12 facing the support assembly 13.

[0035] The left clamping assembly 31 comprises a first sliding seat 311 fixedly connected to one side of the support plate 12 facing the support assembly 13, a first rack 312 slidingly connected to the first sliding seat 311, and a left clamping piece 313 connected to one side of the first rack 312 away from the support plate 12. The first sliding seat 311 is arranged above the first gear 23, and one side of the first sliding seat 311 facing the first gear 23 is provided with a first dovetail groove 3111, and the extension direction of the first dovetail groove 3111 is parallel to the plane where the base 11 is located and the plane where the support plate 12 is located. The first rack 312 is arranged on the upper side of the first gear 23 and is engaged with the first gear 23, and one side of the first rack 312 away from the first gear 23 is provided with a first dovetail protrusion 3121 matched with the first dovetail groove 3111. The first dovetail protrusion 3121 is slidingly arranged in the first dovetail groove 3111, so that the first rack 312 is slidingly connected with the first sliding seat 311. Through the cooperation of the first dovetail groove 3111 and the first dovetail protrusion 3121, accurate guidance is provided for the first rack 312, so that the first rack 312 can only move in the direction of the first dovetail groove 3111 during sliding, avoiding deviation or shaking during left and right movement, thereby ensuring the linearity and accuracy of the movement of the left clamping piece 313.

[0036] The right clamping assembly 32 comprises a second sliding seat 321 fixedly connected to one side of the support plate 12 facing the support assembly 13, a second rack 322 slidingly connected to the second sliding seat 321, and a right clamping piece 323 connected to one side of the second rack 322 away from the support plate 12. The second sliding seat 321 is arranged below the first gear 23, and one side of the second sliding seat 321 facing the first gear 23 is provided with a second dovetail groove 3211, and the extension direction of the second dovetail groove 3211 is parallel to the plane where the base 11 is located and the plane where the support plate 12 is located. The second rack 322 is arranged on the lower side of the first gear 23 and is engaged with the first gear 23, and one side of the second rack 322 away from the first gear 23 is provided with a second dovetail protrusion 3221 matched with the second dovetail groove 3211. The second dovetail protrusion 3221 is slidingly arranged in the second dovetail groove 3211, so that the second rack 322 is slidingly connected with the second sliding seat 321. Through the cooperation of the second dovetail groove 3211 and the second dovetail protrusion 3221, accurate guidance is provided for the second rack 322, so that the second rack 322 can only move in the direction of the second dovetail groove 3211 during sliding, avoiding deviation or shaking during left and right movement, thereby ensuring the linearity and accuracy of the movement of the right clamping piece 323.

[0037] The left clamping piece 313 and the right clamping piece 323 are arranged at two sides of the bearing seat 132 respectively at one end of the support plate 12 away from the support plate 12, the driving assembly 21 drives the rotating shaft 22 to rotate forward or reversely, and then drives the first rack 312 and the second rack 322 to move leftward or rightward through the first gear 23, so as to drive the left clamping piece 313 and the right clamping piece 323 to move close to or away from each other, and then clamp or unclamp the workpiece 200 on the support assembly 13.

[0038] It can be understood that in the embodiment, the left clamping piece 313 and the right clamping piece 323 move synchronously, and when moving close to each other, the workpiece 200 can be pushed to the middle position of the bearing seat 132, so that the length and height of the workpiece 200 to be positioned can be different, that is, the workpiece 200 can have different sizes, as long as the workpiece 200 can be placed in the through slot 1321 of the bearing seat 132 and the workpiece 200 is located between the left clamping piece 313 and the right clamping piece 323, the workpiece 200 can be centrally positioned when the left clamping piece 313 and the right clamping piece 323 move close to each other.

[0039] In the embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The brake mechanism 40 is connected to the support plate 12 and is arranged correspondingly to the rotating shaft 22, and the brake mechanism 40 limits the rotation of the rotating shaft 22 when abutting against the rotating shaft 22.

[0040] The brake mechanism 40 includes a brake assembly 41 connected to one side of the support plate 12 facing the support assembly 13 and a clamping assembly 42 connected to the brake assembly 41, the brake assembly 41 includes a fixed piece 411 fixedly connected to the support plate 12 and a brake handle 412 movably connected to the fixed piece 411, one end of the brake handle 412 is arranged towards the rotating shaft 22 and is rotationally connected with the clamping assembly 42, the brake handle 412 drives the clamping assembly 42 to move close to or away from the rotating shaft 22, so as to limit the rotation of the rotating shaft 22 when the clamping assembly 42 abuts against the rotating shaft 22. The fixed piece 411 is a block structure, the main body part of the brake handle 412 is a rod structure, one end away from the rotating shaft 22 is provided with a rotating handle, the brake handle 412 is screw-connected with the fixed piece 411, and when the brake handle 412 is rotated, the brake handle 412 moves towards or away from the rotating shaft 22 under the guidance of the screw thread.

[0041] The clamping assembly 42 comprises a connecting piece 421 connected with the brake handle 412 at one end of the rotating shaft 22, and a clamping piece 422 detachably connected to the connecting piece 421 at a side close to the rotating shaft 22, and the side of the clamping piece 422 close to the rotating shaft 22 is provided with a clamping groove 4221 matched with the rotating shaft 22. The connecting piece 421 is rotationally connected with the brake handle 412, that is, the brake handle 412 can rotate in the connecting piece 421, and the connecting piece 421 does not rotate by itself. The material of the clamping piece 422 is super glue, and the brake handle 412 can drive the connecting piece 421 to move towards the rotating shaft 22, so that the clamping piece 422 abuts against the rotating shaft 22 to limit the rotation of the rotating shaft 22. The clamping piece 422 is detachably connected with the connecting piece 421, and when the clamping piece 422 is worn or damaged, only the clamping piece 422 needs to be replaced, and the entire clamping assembly 42 does not need to be replaced, thereby reducing the maintenance cost and difficulty.

[0042] The positioning device 100 provided by the embodiment of the present application can support the workpiece 200 through the support assembly 13 in the support mechanism 10, and the base 11 and the support plate 12 of the support mechanism 10 can provide stable support, and the rotating shaft 22 and the first gear 23 can be driven to rotate through the driving assembly 21 in the driving mechanism 20, and then the first rack 312 and the second rack 322 are driven to move through the first gear 23, so that the left clamping piece 313 on the first rack 312 and the right clamping piece 323 on the second rack 322 are close to or away from each other, so as to centrally clamp the workpiece 200 when the left clamping piece 313 and the right clamping piece 323 are close to each other, and the positioning of the workpiece 200 is realized. And the rotating shaft 22 can be abutted by the brake mechanism 40 to limit the rotation of the rotating shaft 22, thereby improving the stability of the left clamping piece 313 and the right clamping piece 323 when clamping and positioning the workpiece 200. The positioning device 100 provided by the embodiment of the present application can centrally clamp and position the workpiece 200 placed on the support assembly 13, as long as the workpiece 200 can be placed on the support assembly 13 and located between the left clamping piece 313 and the right clamping piece 323, which is suitable for clamping and positioning workpieces 200 of different sizes, has high positioning accuracy, is easy to operate, and does not need to measure the size and position of the workpiece 200 manually during positioning, thereby effectively improving work efficiency and reducing labor intensity.

[0043] The working process of the positioning device 100 provided by the embodiment of the present application is as follows:

[0044] Firstly, the workpiece 200 is placed in the through slot 1321 of the bearing seat 132 of the supporting assembly 13, then the driving member 211 is rotated, the output end 2111 of the driving member 211 drives the connected second gear 212 to rotate, the second gear 212 drives the driving rack 214 engaged with the second gear 212 to slide on the driving sliding seat 213, the driving sliding seat 213 is stably slid by the cooperation of the driving dovetail groove 2131 and the third dovetail protrusion 2141 of the driving rack 214. The sliding driving rack 214 drives the third gear 215 to rotate, the third gear 215 drives the rotating shaft 22 to rotate, and the rotating shaft 22 in turn drives the first gear 23 to rotate.

[0045] With the rotation of the first gear 23, since the first gear 23 is engaged with the first rack 312 of the left clamping assembly 31 and the second rack 322 of the right clamping assembly 32 respectively, the first rack 312 moves to the right under the guidance of the first dovetail groove 3111 of the first sliding seat 311 and the first dovetail protrusion 3121 of the first rack 312, and the second rack 322 moves to the left under the guidance of the second dovetail groove 3211 of the second sliding seat 321 and the second dovetail protrusion 3221 of the second rack 322. The first rack 312 drives the left clamping piece 313 to move to the right, and the second rack 322 drives the right clamping piece 323 to move to the left synchronously, so that the left clamping piece 313 and the right clamping piece 323 approach each other, and the workpiece 200 is clamped.

[0046] Then the clamping assembly 42 is driven by the brake handle 412 to move towards the rotating shaft 22, so that the clamping piece 422 of the clamping assembly 42 abuts against the rotating shaft 22 to limit the rotation of the rotating shaft 22, and the clamping state is kept stable.

[0047] Finally, the workpiece 200 is locked by the locking piece 133 on the bearing seat 132.

[0048] If it is needed to release the workpiece 200, firstly, the second gear 212 is reversely driven by the driving member 211 to rotate, and then the rotating shaft 22 is reversely rotated by the driving rack 214 and the third gear 215, so that the first gear 23 is also reversely rotated. Then, the first gear 23 reversely rotates and drives the first rack 312 to move to the left and the second rack 322 to move to the right, the first rack 312 drives the left clamping piece 313 to move to the left, and the second rack 322 drives the right clamping piece 323 to move to the right, so that the left clamping piece 313 and the right clamping piece 323 move away from each other, and then the workpiece 200 is released, and the workpiece 200 is released by adjusting the locking piece 133.

[0049] It is apparent that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

[0050] Finally, it should be noted that the above embodiments are merely used to illustrate the technical solutions of the present application, rather than limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A positioning device, characterized in that Comprise: Supporting mechanism, including horizontally arranged base, connecting to the base and vertically arranged support plate and connecting to the base and with the support plate spaced apart support assembly, the support assembly supports the workpiece; Drive mechanism, connected to the supporting mechanism, including connecting to the support plate drive assembly, along the direction perpendicular to the support plate and with the support plate rotating shaft through the support plate and connected to the rotating shaft near the support assembly one end of the first gear; Clamping mechanism, connected to the supporting mechanism, including connecting to the support plate towards the support assembly one side of the left clamping assembly and right clamping assembly, the left clamping assembly includes arranged on the first gear side and with the first gear meshing first rack and connecting to the first rack away from the support plate one side of the left clamping piece, the right clamping assembly includes arranged on the first gear lower side and with the first gear meshing second rack and connecting to the second rack away from the support plate one side of the right clamping piece, the left clamping piece and the right clamping piece away from the support plate one end is arranged on both sides of the support assembly respectively; and Brake mechanism, connected to the support plate and with the rotating shaft corresponding arrangement, the brake mechanism in resistance to the rotating shaft when the rotating shaft; wherein, The drive assembly drives the rotating shaft positive or negative rotation, drive the first gear drive the first rack and the second rack to the left or right, to drive the left clamping piece and the right clamping piece close to each other or away from each other, in order to clamp or loose the workpiece on the support assembly.

2. The positioning device according to claim 1, wherein The left clamping assembly further comprises a first sliding seat fixedly connected to the support plate towards the support assembly one side, the first sliding seat is arranged above the first gear, the first sliding seat towards the first gear one side is provided with a first dovetail groove, the extension direction of the first dovetail groove is parallel to the plane of the base and the plane of the support plate; The first rack away from the first gear one side is provided with a first dovetail convex which is matched with the first dovetail groove, the first dovetail convex is slidingly arranged in the first dovetail groove, so that the first rack is slidingly connected with the first sliding seat.

3. The positioning device according to claim 1, wherein The right clamping assembly further comprises a second sliding seat fixedly connected to the support plate towards the support assembly one side, the second sliding seat is arranged below the first gear, the second sliding seat towards the first gear one side is provided with a second dovetail groove, the extension direction of the second dovetail groove is parallel to the plane of the base and the plane of the support plate; The second rack away from the first gear one side is provided with a second dovetail convex which is matched with the second dovetail groove, the second dovetail convex is slidingly arranged in the second dovetail groove, so that the second rack is slidingly connected with the second sliding seat.

4. The positioning device according to claim 1, wherein The drive assembly comprises: a driving member, an output end of the driving member being rotationally connected to the support plate in a vertical direction; a second gear connected to the output end of the driving member and arranged in a horizontal direction; a driving sliding seat fixedly connected to a side of the support plate away from the support assembly, the driving sliding seat being arranged above the rotating shaft; a driving rack slidably connected to the driving sliding seat, a side of the driving rack close to the support plate being engaged with the second gear; and a third gear connected to an end of the rotating shaft away from the first gear, the third gear being engaged with a side of the driving rack away from the driving sliding seat; wherein the driving member drives the second gear to rotate, the second gear drives the driving rack to slide, the driving rack drives the third gear to rotate, and the third gear drives the rotating shaft and the first gear to rotate.

5. The positioning device of claim 4, wherein a driving dovetail groove is arranged on a side of the driving sliding seat facing the base, an extension direction of the driving dovetail groove being parallel to a plane on which the base and the support plate are arranged; a third dovetail protrusion adapted to the driving dovetail groove is arranged on a side of the driving rack away from the third gear, the third dovetail protrusion being slidably arranged in the driving dovetail groove, so that the driving rack is slidably connected to the driving sliding seat.

6. The positioning device of claim 1, wherein the brake mechanism comprises a brake assembly connected to a side of the support plate facing the support assembly, and a clamping assembly connected to the brake assembly, the brake assembly comprises a fixed member fixedly connected to the support plate, and a brake handle movably connected to the fixed member, an end of the brake handle facing the rotating shaft is rotationally connected to the clamping assembly, the brake handle drives the clamping assembly to approach or move away from the rotating shaft, so as to limit the rotation of the rotating shaft when the clamping assembly abuts against the rotating shaft.

7. The positioning device of claim 6, wherein the clamping assembly comprises a connecting member rotationally connected to an end of the brake handle facing the rotating shaft, and a clamping member detachably connected to a side of the connecting member close to the rotating shaft, a side of the clamping member facing the rotating shaft is provided with a clamping groove adapted to the rotating shaft.

8. The positioning device of claim 1, wherein the support assembly comprises a support seat connected to the base, and a bearing seat detachably connected to a side of the support seat away from the base, a side of the bearing seat away from the support seat is provided with a through groove for accommodating the workpiece, an extension direction of the through groove is parallel to a plane on which the base and the support plate are arranged.

9. The positioning device of claim 8, wherein a plurality of locking members are arranged on the bearing seat and penetrate the groove wall of the through groove, the plurality of locking members are used to abut against the workpiece in the through groove to fix the workpiece.

10. The positioning device of claim 8, wherein The base is provided with a positioning strip abutting against the support seat away from the support plate, and the positioning strip is used for stopping the support seat.

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