Positioning mechanism convenient to take

Abstract

The utility model provides a locating mechanism convenient to take, which comprises a locating seat and a locating pin vertically connected to the locating seat, a lifting hole is vertically formed in the locating seat, and the outer wall of the locating pin is movably attached to the inner wall of the lifting hole; the positioning seat comprises a fixing portion and a base portion connected to the bottom of the fixing portion, the lifting hole is located in the fixing portion, a receding opening is horizontally formed in the base portion and communicated with the lifting hole, a lifting mechanism used for lifting the positioning pin is arranged in the receding opening, and the lifting mechanism is used for lifting the positioning pin. The lifting mechanism can control the top of the positioning pin to be higher than the fixing part or to be as high as the top of the fixing part. The positioning mechanism convenient to take is low in operation difficulty.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling fixtures and relates to a portable positioning mechanism. Background Art

[0002] Fixtures are process devices used to quickly fasten workpieces during processing to keep the machine tool, tool and workpiece in the correct relative position. In other words, fixtures are indispensable parts of mechanical processing. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent and environmentally friendly, fixture technology is developing towards high precision, high efficiency, modular, combined, universal and economical directions.

[0003] At present, in the production process of automobile parts, a large number of fixtures are also used to fix and position the parts, and then welding, polishing, grinding and other operations are carried out after fixing and positioning. Among them, the fixtures in automobile parts mainly include positioning pins and rotating clamping cylinders for use in conjunction; when actually fixing the parts, firstly, the parts (with pre-opened holes that match the positioning pins) are sleeved on the positioning pins on the positioning seat, and then several rotating clamping cylinders are used to press the parts on the positioning seat from top to bottom, so that the position of the parts can be fixed. Among them, since some parts have higher requirements, they need to have higher position stability. At this time, the pre-opened holes and the positioning pins will be closely matched, so that the parts can be guaranteed to have sufficient position stability in the horizontal direction. However, this will result in greater effort when removing the parts from the positioning pins, and the operation is more difficult. Utility Model Content

[0004] The utility model aims to provide a convenient positioning mechanism, aiming to solve the problem of difficult operation.

[0005] In order to solve the above technical problems, the utility model provides a portable positioning mechanism, including a positioning seat and a positioning pin vertically connected to the positioning seat, a lifting hole is vertically opened on the positioning seat, and the outer wall of the positioning pin is movably attached to the inner wall of the lifting hole;

[0006] The positioning seat includes a fixing portion and a base portion connected to the bottom of the fixing portion, the lifting hole is located on the fixing portion, a clearance opening is horizontally opened on the base portion, the clearance opening is communicated with the lifting hole, a lifting mechanism for lifting the positioning pin is arranged in the clearance opening, and the lifting mechanism can control the top of the positioning pin to be higher than the fixing portion or to be at the same height as the top of the fixing portion.

[0007] The utility model is further configured such that an anti-rotation portion is vertically arranged on the side wall of the positioning pin, and an anti-rotation groove movably cooperated with the anti-rotation portion is opened on the fixing portion, and when the positioning pin is at the highest height, the top of the anti-rotation portion is lower than the top of the fixing portion.

[0008] The utility model is further configured that two anti-rotation parts are provided, and the two anti-rotation parts are symmetrically distributed on both sides of the positioning pin.

[0009] The utility model is further configured that the lifting mechanism comprises a first articulated arm and a second articulated arm, the top of the first articulated arm is articulated to the bottom of the positioning pin, the bottom of the second articulated arm is articulated to the bottom of the clearance opening, and the bottom of the first articulated arm is articulated to the top of the second articulated arm;

[0010] The lifting mechanism includes a driving member horizontally movably arranged at the bottom of the clearance opening, the driving member is externally connected to a driving mechanism for driving the driving member to move horizontally, a bending portion is vertically arranged at the top of one end of the driving member close to the first articulated arm, a third articulated arm is hinged at the top of the bending portion, and a free end of the third articulated arm is hinged to the hinge of the first articulated arm and the second articulated arm.

[0011] The utility model is further configured as follows: two first articulated seats are provided at the bottom of the locating pin, two second articulated seats are provided on the base portion, the first articulated arm is in a U-shape with an opening facing downward, the second articulated arm is in a convex shape, the top of the first articulated arm is located between the two first articulated seats and is articulated to the two first articulated seats, the bottom of the second articulated arm is located between the two second articulated seats and is articulated to the two second articulated seats, the top of the second articulated arm is located in the opening of the first articulated arm, an articulated rod is provided for horizontal movement through the first articulated arm and the second articulated arm, and the free end of the third articulated arm, the first articulated arm and the second articulated arm are all rotatably connected to the articulated rod.

[0012] The utility model is further configured such that two third articulated arms are provided, the two third articulated arms are connected to the two ends of the articulated rod, the first articulated arm and the second articulated arm are both located between the two third articulated arms, and when the positioning pin is at the highest height, the first articulated arm and the second articulated arm are both in a vertical state, and the third articulated arm is in a horizontal state.

[0013] The utility model is further configured such that a termination portion is vertically provided at the bottom of the clearance opening, and the first hinged arm and the second hinged arm are both in contact with the termination portion on one side close to the driving member, and the bottom of the termination portion is lower than the bottom of the positioning pin.

[0014] The utility model is further configured such that a termination plate is horizontally arranged at the bottom of the positioning pin, the top of the termination plate abuts against the top of the clearance opening, and an elastic member which is continuously in an extended state is arranged between the bottom of the termination plate and the bottom of the clearance opening.

[0015] The utility model is further configured that a guide member with a U-shaped longitudinal section opening downward is provided at the bottom of the clearance opening, the longitudinal section of the opening of the guide member is rectangular, and the driving member is movably fitted to the inner wall of the clearance opening and the guide member;

[0016] The free end of the driving member is provided with a linkage arm perpendicular to the driving member, the linkage arm is located outside the clearance opening, the free end of the linkage arm is horizontally provided with a cylindrical linkage cylinder, a plurality of positioning bolts are threadedly connected on the linkage cylinder, and each positioning bolt passes through the linkage cylinder;

[0017] It also includes a power rod, which passes through the linkage cylinder. The positioning bolt abuts against the outer wall of the power rod. The power rod is externally connected to a driving cylinder for driving the power rod to move horizontally.

[0018] The utility model is further configured that a plurality of linkage cylinders are sleeved on the power rod.

[0019] Compared with the prior art, the utility model provides a portable positioning mechanism. When positioning the components, the top of the positioning pin is higher than the top of the fixing part, and then the pre-opening on the component is sleeved onto the positioning pin, and the bottom of the component is made to contact the top of the fixing part; then the rotating clamping cylinder or cylinders are used to clamp the components from top to bottom, so that different parts can be fixed, and finally welding, polishing and other operations are performed; after the processing is completed, the lifting mechanism in the positioning mouth lowers the positioning pin, and makes the top of the positioning pin lower than the top of the fixing part or the same height as the top of the fixing part, so that the positioning pin can be separated from the component, so that the operation of removing the component can be simple, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a portable positioning mechanism of the utility model;

[0021] Figure 2 It is a cross-sectional view of an embodiment of a portable positioning mechanism of the utility model;

[0022] Figure 3 yes Figure 2 A magnified view of part A;

[0023] Figure 4 It is a schematic diagram of an embodiment of a lifting mechanism in a portable positioning mechanism of the utility model.

[0024] Among them, 1. positioning seat; 1a. fixing part; 1b. base part; 2. positioning pin; 3. lifting hole; 4. clearance opening; 5. anti-rotation part; 6. first articulated arm; 7. second articulated arm; 8. driving member; 9. bending part; 10. third articulated arm; 11. first articulated seat; 12. second articulated seat; 13. articulated rod; 14. termination part; 15. termination plate; 16. elastic member; 17. guide member; 18. linkage arm; 19. linkage cylinder; 20. positioning bolt. DETAILED DESCRIPTION

[0025] The following is a further detailed description of a portable positioning mechanism proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0026] A convenient positioning mechanism, such as Figures 1 to 4 As shown, it includes a positioning seat 1 and a positioning pin 2 vertically connected to the positioning seat 1, a lifting hole 3 is vertically opened on the positioning seat 1, and the outer wall of the positioning pin 2 is movably attached to the inner wall of the lifting hole 3;

[0027] The positioning seat 1 includes a fixing portion 1a and a base portion 1b connected to the bottom of the fixing portion 1a. The lifting hole 3 is located on the fixing portion 1a. A clearance opening 4 is horizontally opened on the base portion 1b. The clearance opening 4 is communicated with the lifting hole 3. A lifting mechanism for lifting the positioning pin 2 is provided in the clearance opening 4. The lifting mechanism can control the top of the positioning pin 2 to be higher than the fixing portion 1a or to be at the same height as the top of the fixing portion 1a.

[0028] An anti-rotation portion 5 is vertically provided on the side wall of the positioning pin 2, and an anti-rotation groove movably cooperated with the anti-rotation portion 5 is opened on the fixing portion 1a. When the positioning pin 2 is at the highest height, the top of the anti-rotation portion 5 is lower than the top of the fixing portion 1a.

[0029] Two anti-rotation parts 5 are provided, and the two anti-rotation parts 5 are symmetrically distributed on both sides of the positioning pin 2 .

[0030] The lifting mechanism comprises a first articulated arm 6 and a second articulated arm 7, the top of the first articulated arm 6 is articulated to the bottom of the positioning pin 2, the bottom of the second articulated arm 7 is articulated to the bottom of the clearance opening 4, and the bottom of the first articulated arm 6 is articulated to the top of the second articulated arm 7;

[0031] The lifting mechanism includes a driving member 8 which is horizontally movable and arranged at the bottom of the clearance opening 4. The driving member 8 is externally connected to a driving mechanism for driving the driving member 8 to move horizontally. A bending portion 9 is vertically arranged at the top of one end of the driving member 8 close to the first articulated arm 6. A third articulated arm 10 is hinged at the top of the bending portion 9. The free end of the third articulated arm 10 is hinged to the hinge of the first articulated arm 6 and the second articulated arm 7.

[0032] Two first articulated seats 11 are provided at the bottom of the locating pin 2, and two second articulated seats 12 are provided on the base portion 1b. The first articulated arm 6 is in a U-shape with an opening facing downward, and the second articulated arm 7 is in a convex shape. The top of the first articulated arm 6 is located between the two first articulated seats 11 and is hinged to the two first articulated seats 11. The bottom of the second articulated arm 7 is located between the two second articulated seats 12 and is hinged to the two second articulated seats 12. The top of the second articulated arm 7 is located in the opening of the first articulated arm 6. An articulated rod 13 is provided for horizontal movement through the first articulated arm 6 and the second articulated arm 7. The free end of the third articulated arm 10, the first articulated arm 6 and the second articulated arm 7 are all rotatably connected to the articulated rod 13.

[0033] The third articulated arms 10 are provided with two, and the two third articulated arms 10 are connected to the two ends of the articulated rod 13, and the first articulated arm 6 and the second articulated arm 7 are both located between the two third articulated arms 10. When the positioning pin 2 is at the highest height, the first articulated arm 6 and the second articulated arm 7 are both in a vertical state, and the third articulated arm 10 is in a horizontal state.

[0034] A stop portion 14 is vertically provided at the bottom of the clearance opening 4 , and the first hinged arm 6 and the second hinged arm 7 are both in contact with the stop portion 14 on one side close to the driving member 8 , and the bottom of the stop portion 14 is lower than the bottom of the positioning pin 2 .

[0035] A stop plate 15 is horizontally disposed at the bottom of the positioning pin 2 , the top of the stop plate 15 abuts against the top of the clearance opening 4 , and an elastic member 16 that is continuously in an extended state is disposed between the bottom of the stop plate 15 and the bottom of the clearance opening 4 .

[0036] The bottom of the clearance opening 4 is provided with a guide member 17 with a U-shaped longitudinal section opening downward, and the longitudinal section of the opening of the guide member 17 is rectangular, and the driving member 8 is movably fitted to the clearance opening 4 and the inner wall of the guide member 17;

[0037] The free end of the driving member 8 is provided with a linkage arm 18 perpendicular to the driving member 8, the linkage arm 18 is located outside the clearance opening 4, and the free end of the linkage arm 18 is horizontally provided with a cylindrical linkage cylinder 19, and the linkage cylinder 19 is threadedly connected with a plurality of positioning bolts 20, and each positioning bolt 20 passes through the linkage cylinder 19;

[0038] It also includes a power rod, which passes through the linkage cylinder 19, the positioning bolt 20 abuts against the outer wall of the power rod, and the power rod is externally connected to a driving cylinder for driving the power rod to move horizontally. A plurality of linkage cylinders 19 are sleeved on the power rod.

[0039] The utility model provides a portable positioning mechanism. When positioning a component, the top of the positioning pin 2 is higher than the top of the fixing portion 1a. Then, the pre-opening on the component is sleeved onto the positioning pin 2, and the bottom of the component is made to contact the top of the fixing portion 1a. Then, the rotating pressing cylinder or the cylinder is used to press the component from top to bottom, so that different parts can be fixed, and finally welding, polishing and other operations are performed. After the processing is completed, the lifting mechanism in the positioning opening 4 lowers the positioning pin 2, and makes the top of the positioning pin 2 lower than the top of the fixing portion 1a or the same height as the top of the fixing portion 1a, so that the positioning pin 2 can be separated from the component, so that the operation of removing the component can be simple, and the operation is convenient.

[0040] When the component is sleeved onto the positioning pin 2, the driving cylinder (preferably an air cylinder or an oil cylinder, etc.) drives the power rod to move, and at the same time drives all the linkage cylinders 19 on the tooling to move. In actual use, it is necessary to design the shape of the corresponding linkage arm 18 according to different components (that is, the shape, length, etc. of different linkage arms 18 may be different), so that multiple linkage cylinders 19 can be connected to the power rod, and multiple linkage arms 18 can be driven to move.

[0041] Driven by the power rod, all the third articulated arms 10 pull the first articulated arm 6 and the second articulated arm 7 to a vertical state, and the end portion 14 at this time can limit and support the first articulated arm 6 and the second articulated arm 7; at this time, the components can be directly sleeved onto the locating pin 2, wherein the periphery of the top of the locating pin 2 is preferably chamfered or rounded to facilitate sleeve connection.

[0042] After the processing is completed, the driving cylinder drives the power rod to move forward, and the power rod drives all the linkage cylinders 19 to move forward. Then the linkage cylinder 19, the linkage arm 18, the driving member 8, the bending portion 9, and the third articulated arm 10 are all active, and drive the first articulated arm 6 and the second articulated arm 7 to rotate. During the rotation process, the height of the locating pin 2 is lowered, so that the top of the locating pin 2 can be separated from the component.

[0043] During the lifting process of the positioning pin 2, the anti-rotation parts 5 on both sides are limited by the anti-rotation grooves, so that the positioning pin 2 can only be lifted vertically and cannot rotate. In this way, the first articulated arm 6, the second articulated arm 7 and the third articulated arm 10 can move stably, and the use effect is better.

[0044] After the parts are removed, the driving rod drives all the driving members 8 to move back through the power rod, thereby pulling the first articulated arm 6 and the second articulated arm 7 to rotate through the third articulated arm 10, and at the same time raising the positioning pin 2 to the highest position until the final stop plate 15 contacts the top of the clearance opening 4. Since the first articulated arm 6 and the second articulated arm 7 are both in a vertical state during use, the strength and support stability of the positioning pin 2 can be guaranteed. Secondly, when lowering the positioning pin 2, the elastic member 16 can also play an auxiliary role, so that the positioning pin 2 can go down smoothly.

[0045] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A portable positioning mechanism, characterized in that: It comprises a positioning seat (1) and a positioning pin (2) vertically connected to the positioning seat (1); a lifting hole (3) is vertically opened on the positioning seat (1); and the outer wall of the positioning pin (2) is movably fitted to the inner wall of the lifting hole (3); The positioning seat (1) comprises a fixing portion (1a) and a base portion (1b) connected to the bottom of the fixing portion (1a); the lifting hole (3) is located on the fixing portion (1a); a clearance opening (4) is horizontally opened on the base portion (1b); the clearance opening (4) is communicated with the lifting hole (3); a lifting mechanism for lifting the positioning pin (2) is arranged in the clearance opening (4); the lifting mechanism can control the top of the positioning pin (2) to be higher than the fixing portion (1a) or to be at the same height as the top of the fixing portion (1a).

2. A portable positioning mechanism according to claim 1, characterized in that: An anti-rotation portion (5) is vertically arranged on the side wall of the positioning pin (2), and an anti-rotation groove movably matched with the anti-rotation portion (5) is opened on the fixing portion (1a). When the positioning pin (2) is at the highest height, the top of the anti-rotation portion (5) is lower than the top of the fixing portion (1a).

3. A portable positioning mechanism according to claim 2, characterized in that: Two anti-rotation parts (5) are provided, and the two anti-rotation parts (5) are symmetrically distributed on both sides of the positioning pin (2).

4. The portable positioning mechanism according to claim 1, characterized in that: The lifting mechanism comprises a first articulated arm (6) and a second articulated arm (7), the top of the first articulated arm (6) is articulated to the bottom of the positioning pin (2), the bottom of the second articulated arm (7) is articulated to the bottom of the clearance opening (4), and the bottom of the first articulated arm (6) is articulated to the top of the second articulated arm (7); The lifting mechanism comprises a driving member (8) which is horizontally movable and arranged at the bottom of the clearance opening (4); the driving member (8) is externally connected to a driving mechanism for driving the driving member (8) to move horizontally; a bending portion (9) is vertically arranged at the top of one end of the driving member (8) close to the first articulated arm (6); a third articulated arm (10) is hinged at the top of the bending portion (9); and a free end of the third articulated arm (10) is hinged to a hinge point between the first articulated arm (6) and the second articulated arm (7).

5. The portable positioning mechanism according to claim 4, characterized in that: Two first hinge seats (11) are arranged at the bottom of the positioning pin (2), and two second hinge seats (12) are arranged on the base portion (1b); the first hinge arm (6) is in a U-shape with an opening facing downward, and the second hinge arm (7) is in a convex shape; the top of the first hinge arm (6) is located between the two first hinge seats (11) and is hinged to the two first hinge seats (11); the bottom of the second hinge arm (7) is located between the two second hinge seats (12) and is hinged to the two second hinge seats (12); the top of the second hinge arm (7) is located in the opening of the first hinge arm (6); a hinge rod (13) is arranged to horizontally move through the first hinge arm (6) and the second hinge arm (7); the free end of the third hinge arm (10), the first hinge arm (6) and the second hinge arm (7) are all rotatably connected to the hinge rod (13).

6. The portable positioning mechanism according to claim 5, characterized in that: The third articulated arms (10) are provided with two, the two third articulated arms (10) are connected to the two ends of the articulated rod (13), the first articulated arm (6) and the second articulated arm (7) are both located between the two third articulated arms (10), and when the positioning pin (2) is at the highest height, the first articulated arm (6) and the second articulated arm (7) are both in a vertical state, and the third articulated arm (10) is in a horizontal state.

7. The portable positioning mechanism according to claim 6, characterized in that: A termination portion (14) is vertically arranged at the bottom of the clearance opening (4), and the first hinged arm (6) and the second hinged arm (7) are both in contact with the termination portion (14) on one side close to the driving member (8), and the bottom of the termination portion (14) is lower than the bottom of the positioning pin (2).

8. The portable positioning mechanism according to claim 7, characterized in that: A stop plate (15) is horizontally arranged at the bottom of the positioning pin (2), the top of the stop plate (15) abuts against the top of the clearance opening (4), and an elastic member (16) which is continuously in an extended state is arranged between the bottom of the stop plate (15) and the bottom of the clearance opening (4).

9. The portable positioning mechanism according to claim 4, characterized in that: A guide member (17) having a U-shaped longitudinal section and opening downward is provided at the bottom of the clearance opening (4); the longitudinal section of the opening of the guide member (17) is rectangular; and the driving member (8) is movably fitted to the inner wall of the clearance opening (4) and the guide member (17); The free end of the driving member (8) is provided with a linkage arm (18) perpendicular to the driving member (8), the linkage arm (18) is located outside the clearance opening (4), the free end of the linkage arm (18) is horizontally provided with a cylindrical linkage cylinder (19), a plurality of positioning bolts (20) are threadedly connected to the linkage cylinder (19), and each positioning bolt (20) passes through the linkage cylinder (19); It also includes a power rod, which passes through the linkage cylinder (19), the positioning bolt (20) abuts against the outer wall of the power rod, and the power rod is externally connected to a driving cylinder for driving the power rod to move horizontally.

10. The portable positioning mechanism according to claim 9, characterized in that: A plurality of linkage cylinders (19) are sleeved on the power rod.

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