Positioning mechanism

Abstract

The utility model discloses a positioning mechanism which comprises a shell and a clamping device, and a containing cavity is formed in the shell. The clamping device comprises two movable blocks and a control rod, each movable block is provided with a control section located in the containing cavity and a clamping section extending out of the containing cavity, each control section is provided with a protruding part, the clamping sections are connected with clamping pieces which can abut against each other, and the abutting portion of each clamping piece is provided with a positioning groove. Parts of the edges of the two positioning grooves are attached to each other and jointly form a positioning space, the control rod penetrates through the shell, an extrusion part is arranged on the rod body located in the containing cavity, the protruding parts abut against the two sides of the control part respectively, and the extrusion part can press the protruding parts to drive the movable block to move by pressing the control rod, so that the clamping piece is loosened. According to the technical scheme, the workpiece can be quickly and conveniently positioned, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to a positioning mechanism. Background Art

[0002] In mechanical processing, in order to ensure the position accuracy of the workpiece and obtain dimensional accuracy by adjustment method, the workpiece must occupy a correct position, that is, the workpiece must be positioned. The existing mechanical equipment generally positions the workpiece by using pneumatic components to suck the workpiece and transport it to the workstation for four-claw positioning. After positioning, it flows into the next workstation.

[0003] During the above positioning process, the positioning device is usually complex in structure, cumbersome to operate, and takes a long time, which is quite inconvenient to use. Utility Model Content

[0004] The main purpose of the utility model is to provide a positioning mechanism, which is intended to be able to quickly and conveniently position a workpiece and improve production efficiency.

[0005] To achieve the above-mentioned purpose, the present invention proposes a positioning mechanism comprising:

[0006] a housing, wherein a receiving cavity is formed inside the housing;

[0007] The clamping device comprises two movable blocks and a control rod, each of the two movable blocks having a control section located in the accommodating cavity and a clamping section extending out of the accommodating cavity, the control section being provided with a protrusion, the clamping section being connected with a clamping member that can be tightly pressed against each other, a positioning groove being provided at the abutting portion of the clamping member, partial edges of the two positioning grooves being in contact with each other and jointly forming a positioning space, the control rod passes through the shell, and an extrusion portion is provided on the rod body located in the accommodating cavity, the protrusions respectively abutting against both sides of the extrusion portion, and pressing the control rod can cause the extrusion portion to compress the protrusion to drive the movable block to move, thereby loosening the clamping member.

[0008] In one embodiment of the present invention, the clamping member includes a mounting portion and a clamping portion, a bending portion is formed at the connection between the two, the mounting portion is fitted and fixed to the end face of the clamping section, and the positioning groove is provided at the end of the clamping portion.

[0009] In one embodiment of the present invention, a material discharge platform is provided on the surface of the shell, and the material discharge platform is located between the clamping sections of the two movable blocks. When the clamping parts abut against each other, the clamping sections and the bending parts are both abutted against the material discharge platform.

[0010] In one embodiment of the present invention, a first spring is provided between the control sections of the two movable blocks and the inner wall of the accommodating cavity, and the two first springs are arranged opposite to each other to provide a thrust to the movable blocks to make the clamping members abut against each other.

[0011] In one embodiment of the present invention, the diameter of the extrusion portion gradually decreases from both ends to the middle portion to form two inclined surfaces, and the two inclined surfaces together form an annular groove.

[0012] In one embodiment of the present invention, the rod body of the control rod in the accommodating cavity is further sleeved with a second spring, one end of the second spring abuts against the extrusion portion, and the other end abuts against the inner wall of the accommodating cavity.

[0013] In one embodiment of the present invention, an observation port is provided on the surface of the shell corresponding to the raised portion.

[0014] The technical solution of the utility model is to set a clamping device consisting of two movable blocks and a control rod inside the shell, the control section of the movable block is provided with a protrusion, the clamping section is connected to the clamping piece, and the extrusion part on the control rod can separate / tighten the clamping piece by squeezing the protrusion to position the workpiece. Compared with the traditional positioning method by pneumatic adsorption and four-claw clamping, the technical solution has a simpler structure, is faster and easier to operate, saves time and effort, and effectively improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the clamping device of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the movable block of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the clamping member of the present utility model;

[0020] Figure 5 This is a schematic diagram of the control rod structure of the present utility model.

[0021] Description of Figure Numbers:

[0022] 1. Shell; 11. Accommodating chamber; 12. Discharging platform; 13. Observation port; 2. Clamping device; 3. Movable block; 31. Control section; 311. Protrusion; 312. First spring; 32. Clamping section; 4. Control rod; 41. Extrusion section; 411. Inclined surface; 412. Annular groove; 42. Second spring; 5. Clamping member; 51. Positioning groove; 511. Positioning space; 52. Mounting section; 53. Clamping section; 54. Bending section.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0025] Reference Figures 1 to 5 The present invention proposes a positioning mechanism, including a shell 1 and a clamping device 2. The shell 1 is formed with a accommodating cavity 11; the clamping device 2 includes two movable blocks 3 and a control rod 4. Both movable blocks 3 have a control section 31 located in the accommodating cavity 11 and a clamping section 32 extending out of the accommodating cavity 11. The control section 31 is provided with a protrusion 311. The clamping section 32 is connected to a clamping member 5 that can be tightly pressed against each other. A positioning groove 51 is provided at the abutting portion of the clamping member 5. Partial edges of the two positioning grooves 51 fit together and jointly form a positioning space 511. The control rod 4 passes through the shell 1 and is provided with an extrusion portion 41 on the rod body located in the accommodating cavity 11. The protrusions 311 respectively abut against both sides of the extrusion portion. Pressing the control rod 4 can cause the extrusion portion 41 to press the protrusion 311 to drive the movable block 3 to move, thereby loosening the clamping member 5.

[0026] It can be understood that the shell 1 plays a certain protective role for the clamping device 2 arranged in the accommodating cavity 11, preventing it from being directly exposed to the outside and damaged by collision, extrusion, etc. The clamping device 2 is composed of two movable blocks 3 and a control rod 4. One end of the two movable blocks 3 remains in the accommodating cavity 11, and the other end extends out of the accommodating cavity 11. The two movable blocks 3 can move toward / away from each other in the accommodating cavity 11.

[0027] Optionally, the two movable blocks 3 can be brought closer to each other by magnetic attraction, or by setting a spring to make the movable blocks 3 approach each other. Hydraulic, pneumatic, electric telescopic rods and other devices can also be set to drive the movable blocks 3 to approach each other.

[0028] The end of the clamping section 32 of the movable block 3 is connected to a clamping member 5. When the two movable blocks 3 are close to each other, the two clamping members 5 will abut against each other. A positioning groove 51 is provided at the abutting part. The two positioning grooves 51 are attached together to form a positioning space 511. The workpiece is positioned in the positioning space 511. It should be noted that the edge of the positioning space 511 should be consistent with the edge of the workpiece. When the two clamping members 5 are in the process of abutting against each other, the workpiece is in the position between the two positioning grooves 51. The edge of the positioning groove 51 first contacts the workpiece and pushes the workpiece to move. When the two positioning grooves 51 are attached to form the positioning space 511, the positioning space 511 just surrounds the workpiece, so that the edge of the workpiece is completely attached to the positioning space 511, and the positioning of the workpiece is completed. Compared with the traditional four-claw positioning method, it is undoubtedly more convenient and quick, and the structure is simpler and more practical.

[0029] The control section 31 of the movable block 3 has a protrusion 311, which abuts against the two sides of the extrusion part of the control rod 4 respectively. It should be noted that the diameter of the extrusion part is not uniform, but has a part with a thicker diameter and a part with a thinner diameter. When no external force is applied to the control rod 4 and the movable block 3, the two protrusions 311 abut against the part with a thinner diameter of the extrusion part. When the movable blocks 3 need to be moved away from each other to separate the clamping members 5 for loading or removing materials, it is only necessary to press the control rod 4 so that the part with a thicker diameter of the extrusion part is pressed between the two protrusions 311, so that the two movable blocks 3 can be stretched apart and the clamping members 5 can be separated. The above arrangement can more conveniently control the clamping members 5 to be separated or tightened, is simple to operate, and saves time and effort.

[0030] Reference Figures 2 to 4 In one embodiment of the present application, the clamping member 5 includes a mounting portion 52 and a clamping portion 53 , a bending portion 54 is formed at the connection between the two, the mounting portion 52 is fitted and fixed to the end face of the clamping section 32 , and the positioning groove 51 is opened at the end of the clamping portion 53 .

[0031] It can be understood that the mounting portion 52 is completely fitted and fixed to the end face of the clamping section 32, and the larger contact surface can make the connection between the two more firm, so that the clamping member 5 is also relatively stable in the process of following the movement of the movable block 3, and is not prone to shaking and affecting the positioning of the workpiece or even causing damage to the workpiece; the clamping portion 53 is used to clamp and position the workpiece, and the positioning groove 51 is opened at the end of the clamping portion 53. The clamping portion 53 and the mounting portion 52 are separated by the bending portion 54, so that different functional areas on the clamping member 5 are separated, so that the clamping and positioning function of the workpiece and the connection function with the movable block 3 are completely separated and do not interfere with each other.

[0032] Reference Figures 1 to 2In one embodiment of the present application, a discharge platform 12 is provided on the surface of the shell 1. The discharge platform 12 is located between the clamping sections 32 of the two movable blocks 3. When the clamping parts 53 abut against each other, the clamping sections 32 and the bending parts 54 are both abutted and limited to the discharge platform 12.

[0033] It can be understood that the unloading table 12 provides a platform for placing the workpiece on the one hand, making the positioning operation of the workpiece more convenient. On the other hand, it also serves as a limit for the movable block 3 and the clamping member 5. When the clamping section 32 of the movable block 3 and the bent portion 54 of the clamping member 5 abut against the unloading table 12, the positioning grooves 51 of the clamping member 5 just fit together to position the workpiece. The above arrangement can avoid excessive force when the clamping members 5 abut against each other, causing damage to the workpiece. Moreover, the clamping portion 53 of the clamping member 5 is in contact with the surface of the unloading table 12 when moving, and friction can be generated between the contact surfaces of the two, further reducing the force and speed of the clamping member 5 when it is pressed tightly.

[0034] Reference Figures 1 to 2 In one embodiment of the present application, a first spring 312 is provided between the control section 31 of each of the two movable blocks 3 and the inner wall of the accommodating cavity 11, and the two first springs 312 are arranged opposite to each other to provide a thrust to the movable block 3 so that the clamping member 5 abuts against each other.

[0035] It can be understood that the use of a spring to provide thrust to the movable block 3 has the following advantages: high elasticity, the spring has high elasticity and resilience, can quickly return to its original shape after being subjected to force, and the spring has a large elastic range, and can maintain stable elastic properties under various stresses; good controllability, the elastic properties of the spring can be adjusted by parameters such as material selection, wire diameter, pitch, number of turns, etc. to meet different engineering needs and design requirements; strong durability, the spring is usually made of metal, has high durability and fatigue resistance, and is not easy to deform or lose elasticity after long-term use; large load-bearing capacity, the spring can withstand large compression, tension or torsional forces, and can play an important elastic support and buffering role in various mechanical devices; good stability, the elastic properties of the spring are relatively stable, are not affected by most environmental factors, and can maintain relatively stable mechanical properties.

[0036] Reference Figure 5 In one embodiment of the present application, the diameter of the extrusion portion 41 gradually decreases from its two ends to the middle to form two inclined surfaces 411 , and the two inclined surfaces 411 together constitute an annular groove 412 .

[0037] As can be understood, the extrusion portion 41 is a structure with thick ends and a thin center, with the annular groove 412 being its thinner portion. The two protrusions 311 of the movable block 3 abut against the bottom of the annular groove 412. The annular groove 412 is flanked by two inclined surfaces 411. When the control lever 4 is pressed, the inclined surfaces 411 gradually compress the protrusions 311, causing the two protrusions 311 to gradually move away from each other, causing the movable block 3 to be stretched open and the clamping members 5 to release from each other. At this point, the material can be placed on or taken out of the material discharging platform 12. When the control lever 4 is no longer pressed, the protrusions 311, under the action of the two first springs 312, move closer to each other, compressing the inclined surfaces 411 and driving the control lever 4 to move, eventually returning the protrusions 311 to the bottom of the annular groove 412. This arrangement makes it relatively easy to control the loosening or tightening of the clamping member 5 by simply pressing the control lever 4, which is convenient and quick to operate, saving time and effort.

[0038] Reference Figures 1 to 2 In one embodiment of the present application, the rod body of the control rod 4 in the accommodating chamber 11 is also sleeved with a second spring 42, one end of the second spring 42 abuts against the extrusion portion 41, and the other end abuts against the inner wall of the accommodating chamber 11.

[0039] It can be understood that the second spring 42 is used to provide a thrust to the extrusion portion 41, so that when the control rod 4 stops being pressed, the control rod 4 can rebound quickly, accelerating the process of the protrusion 311 from the inclined surface 411 to the bottom of the annular groove 412, so that the two clamping members 5 can be quickly pressed together. In addition, using a spring to provide thrust also has the advantages of high elasticity, good controllability, strong durability, large load-bearing capacity, and good stability.

[0040] Reference Figure 1 In one embodiment of the present application, an observation port 13 is provided on the surface of the housing 1 corresponding to the raised portion 311 .

[0041] It can be understood that the setting of the observation port 13 makes the structure inside the accommodating cavity 11 clear at a glance, and can more conveniently observe the movement of the protrusion 311 and the control rod 4 inside the shell 1, making it convenient to detect and maintain the working condition of the mechanism.

[0042] The technical solution of the present invention is to set a clamping device 2 consisting of two movable blocks 3 and a control rod 4 inside the shell 1, the control section 31 of the movable block 3 is provided with a protrusion 311, the clamping section 32 is connected to the clamping piece 5, and the extrusion portion 41 on the control rod 4 can separate / tighten the clamping piece 5 by squeezing the protrusion 311 to position the workpiece. Compared with the traditional positioning method by pneumatic adsorption and four-claw clamping, the technical solution has a simpler structure, is faster and easier to operate, saves time and effort, and effectively improves work efficiency.

[0043] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A positioning mechanism, characterized in that: include A housing (1), wherein a receiving cavity (11) is formed inside the housing (1); A clamping device (2), the clamping device (2) comprising two movable blocks (3) and a control rod (4), the two movable blocks (3) each having a control section (31) located in the accommodating cavity (11) and a clamping section (32) extending out of the accommodating cavity (11), the control section (31) being provided with a protruding portion (311), the clamping section (32) being connected to a clamping member (5) that can be pressed against each other, the abutting portion of the clamping member (5) being provided with a positioning groove (51), the two movable blocks (3) each having a control section (31) located in the accommodating cavity (11) and a clamping section (32) extending out of the accommodating cavity (11), the control section (31) being provided with a protruding portion (311), the clamping section (32) being connected to a clamping member (5) that can be pressed against each other, the abutting portion of the clamping member (5) being provided with a positioning groove (51), Partial edges of the positioning groove (51) are in contact with each other and together form a positioning space (511); the control rod (4) passes through the shell (1), and a pressing portion (41) is provided on the rod body in the accommodating cavity (11); the protruding portion (311) respectively abuts against two sides of the pressing portion; pressing the control rod (4) allows the pressing portion (41) to press the protruding portion (311) to drive the movable block (3) to move, thereby releasing the clamping member (5).

2. The positioning mechanism according to claim 1, characterized in that: The clamping member (5) comprises a mounting portion (52) and a clamping portion (53), a bending portion (54) being formed at the connection between the two, the mounting portion (52) being fitted and fixed to the end surface of the clamping section (32), and the positioning groove (51) being provided at the end of the clamping portion (53).

3. The positioning mechanism according to claim 2, characterized in that: A material discharging platform (12) is arranged on the surface of the shell (1), and the material discharging platform (12) is located between the clamping sections (32) of the two movable blocks (3). When the clamping parts (53) abut against each other, the clamping sections (32) and the bending parts (54) are both abutted against the material discharging platform (12).

4. The positioning mechanism according to claim 3, characterized in that: A first spring (312) is arranged between the control sections (31) of the two movable blocks (3) and the inner wall of the accommodating cavity (11), and the two first springs (312) are arranged opposite to each other to provide a thrust to the movable blocks (3) so that the clamping members (5) abut against each other.

5. The positioning mechanism according to claim 4, characterized in that: The diameter of the extrusion portion (41) gradually decreases from its two ends to its middle portion to form two inclined surfaces (411), and the two inclined surfaces (411) together form an annular groove (412).

6. The positioning mechanism according to claim 5, characterized in that: The rod body of the control rod (4) in the accommodating cavity (11) is also sleeved with a second spring (42), one end of the second spring (42) abuts against the extrusion portion (41), and the other end abuts against the inner wall of the accommodating cavity (11).

7. The positioning mechanism according to any one of claims 1 to 6, characterized in that: An observation port (13) is provided on the surface of the shell (1) corresponding to the raised portion (311).

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