CN113751518B

CN113751518B - Clamping mechanism

Info

Publication number: CN113751518B
Application number: CN202110556530.4A
Authority: CN
Inventors: 陆军明; 陆振飞; 盛凯伟; 居靖杰
Original assignee: Jiaxing Baoli Machinery Co ltd
Current assignee: Jiaxing Baoli Machinery Co ltd
Priority date: 2020-06-01
Filing date: 2021-05-21
Publication date: 2023-08-22
Anticipated expiration: 2041-05-21
Also published as: CN113751518A

Abstract

The invention discloses a clamping mechanism, which comprises: a main body; the clamping claw is arranged in the main body and is used for clamping an object; a power assembly including a first portion coupled to the pawl, and a second portion; the auxiliary device comprises a guide rail arranged on the second part and a movable piece connected with the guide rail; the clamping mechanism is provided with at least a first stroke and a second stroke, the first part moves relative to the second part in the first stroke, the clamping claw clamps an object, and the movable part is propped against the clamping claw; in the second stroke, the first part is relatively static, the second part moves relative to the first part, and the guide rail drives the movable piece to rotate to form a movable gap for loosening objects by the clamping jaw. The invention has stable clamping, and when the object needs to be separated, the object can be easily separated from the claw without applying external force or applying smaller external force; the whole process is automatically carried out, so that the labor cost is reduced, and the safety performance is improved; the clamping object has small volume, less scrapped materials and reduced lost raw materials, and saves the processing cost.

Description

Clamping mechanism

Technical Field

The invention belongs to the technical field of reinforcement processing machinery, and particularly relates to a clamping mechanism.

Background

The steel is usually processed by forcing the steel blank through a die orifice under external tension to obtain the desired shape, size and mechanical properties of the finished steel. The drawing device in the current market needs manual feeding, the raw materials that manual chain-guiding feeding consumed are more, the cost is increased, manual discharging is needed after processing is completed, personal injury is easily caused due to the fact that the weight of steel is large and difficult to control, the labor cost is high, the machine is required to be stopped for operation, and when drawing is performed again, the change of linear velocity is caused due to the stop rotation and restarting of the rotary winding drum, and the outer diameter of the head end of the machine is not in accordance with the requirement.

Disclosure of Invention

In order to overcome the defects of the prior art, the clamping mechanism provided by the invention is stable and effective in clamping, convenient in clamping releasing and simple in structure, and is small in waste raw materials, high in drawing efficiency and good in drawing effect when being applied to round steel drawing.

The technical scheme adopted for solving the technical problems is as follows: a clamping mechanism comprising:

a main body;

the clamping claw is arranged in the main body and is used for clamping an object;

a power assembly including a first portion coupled to the pawl, and a second portion;

the auxiliary device comprises a guide rail arranged on the second part and a movable piece connected with the guide rail;

the clamping mechanism has at least a first stroke and a second stroke,

in the first travel, the first part moves relative to the second part, the claw clamps an object, and the movable piece is propped against the claw;

in the second stroke, the first part is relatively static, the second part moves relative to the first part, and the guide rail drives the movable piece to rotate to form a movable gap for loosening objects by the clamping jaw.

According to the invention, in the first row Cheng Gachi of objects, the clamping is stable, the objects cannot easily slip, and when the objects are loosened, the clamping jaws and the objects are mutually embedded and cannot easily separate, and a gap is formed between the movable piece and the clamping jaw through the movement of the second part in the second stroke, so that a movable gap is provided for the separation of the clamping jaw and the objects, and the objects can easily separate from the clamping jaw; the whole structure is simple, the design is ingenious, the object can be automatically separated from the clamping mechanism, the feeding operation of the object is not needed by manpower, the damage of the object to workers is avoided, and the safety performance is higher; the object contacted by the clamping mechanism is small in size, so that the larger loss of materials is avoided, and the processing cost is reduced.

Further, the movable piece is close to the end part of the side wall of the clamping jaw to form a cutting surface, and the cutting surface and the clamping jaw form an avoidance space. The design of the cutting surface prevents the movable piece from interfering the clamping jaw after rotating, and simultaneously ensures the auxiliary compaction effect of the movable piece on the clamping jaw in the clamping state.

Further, the movable piece is rotatably connected with the main body through the rotating shaft, when the first end of the movable piece moves along the guide track, the second end of the movable piece rotates by taking the rotating shaft as a fulcrum, so that the first end of the movable piece is far away from the clamping jaw, and a movable gap between the movable piece and the clamping jaw is formed.

Further, the guide rail is arc-shaped, and the outer arc surface of the guide rail is close to the clamping jaw. The movable range of the movable piece is limited by the guide rail, when the first end of the movable piece moves to one end of the guide rail, the movable piece is tightly attached to the clamping jaw, when the first end of the movable piece moves to the other end of the movable piece along the guide rail, the movable piece is far away from the clamping jaw, a movable gap for separating objects by the clamping jaw is provided, and due to the fact that the movable piece abuts against the end of the guide rail, the smoothness of movement is improved due to the design of the arc-shaped structure, and the movable piece can be kept in the state.

Further, the second portion is resiliently coupled to the body. The second part of the elastic connection can be automatically reset after the object is loosened, and manual reset is not needed.

Further, the second part comprises a mounting plate parallel to the main body, a guide slideway perpendicular to the mounting plate and a guide block capable of propping against the step structure on the main body, and the guide rail is arranged on the guide block.

Further, the first part comprises a piston which is connected with the claw after passing through the guide slideway, and an oil cylinder for pushing the piston to translate, and the oil cylinder is connected with the mounting plate.

Further, a base is formed on the mounting plate, the connecting rod penetrates out of the base and then is connected with the main body, and one end of the reset piece sleeved in the connecting rod in the base abuts against the main body. The base guarantees that the piece that resets can not squint at will, and the connecting rod guarantees the straight line translation of mounting panel.

Further, the clamping jaw comprises a clamping jaw I and a clamping jaw II, the auxiliary device comprises a first auxiliary device arranged on the side where the clamping jaw I is located, and a second auxiliary device arranged on the side where the clamping jaw II is located, and the first auxiliary device and the second auxiliary device are symmetrically arranged. The stability of overall structure is guaranteed to the first auxiliary device and the second auxiliary device that the symmetry set up for jack catch both sides atress is balanced, and is more stable to the centre gripping of object.

Further, an inclined surface matched with the claw is formed in the main body, and the inclined surface is the same as the inclined angle and the inclined direction of the outer wall of the claw.

The beneficial effects of the invention are as follows: 1) The force for clamping the object is large, the clamping is stable, and when the object needs to be separated, a movable gap for separating the clamping jaw from the object is provided, so that the object can be easily separated from the clamping jaw without applying external force or applying smaller external force; 2) The whole process is automatically carried out without manual operation of feeding and discharging, so that the labor cost is reduced, and the safety performance is improved; 3) The clamping object has small volume, less scrapped materials and reduced lost raw materials, and saves the processing cost.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the second embodiment of the present invention.

Fig. 3 is a perspective view of the present invention.

Fig. 4 is a perspective view of the present invention.

Fig. 5 is a front view of the present invention.

Fig. 6 is a side cross-sectional view of the present invention.

Fig. 7 is a front cross-sectional view of the present invention.

Fig. 8 is a sectional view showing an initial state of the present invention.

Fig. 9 is a sectional view showing a state after clamping an object according to the present invention.

Fig. 10 is a sectional view showing a state after the object is released according to the present invention.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the following description will make clear and complete descriptions of the technical solutions of the embodiments of the present invention with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

As shown in fig. 1 to 7, a clamping mechanism comprises a main body 1, a claw 2 arranged in the main body 1, a power assembly connected with the claw 2, and an auxiliary device arranged in the main body 1 and matched with the claw 2.

The clamping jaw 2 comprises a clamping jaw I21 and a clamping jaw II 22 which can be movably close to or far from each other, and in order to firmly clamp an object, a saw-tooth structure is formed on the side wall of the clamping jaw I21, which is close to the clamping jaw II 22, and a saw-tooth structure is also formed on the side wall of the clamping jaw II 22, which is close to the clamping jaw I21. The side wall of the first claw 21, which is far away from the second claw 22, is provided with an inclined plane, an inclined plane 13 is formed in the main body 1, the inclined angle and the inclined direction of the inclined plane 13 are the same as those of the inclined plane, the second claw 22 has the same structure, and no description is repeated, so that when the first claw 21 and the second claw 22 translate upwards along the main body 1 (the direction shown in fig. 5 is taken as a reference), the opening formed by the two inclined planes 13 is smaller and smaller, and the extrusion acting force on the second claw 2 is larger and larger.

The auxiliary device comprises a first auxiliary device 401 arranged on the side of the first claw 21 and a second auxiliary device 402 arranged on the side of the second claw 22, and the first auxiliary device 401 and the second auxiliary device 402 have the same structure and are symmetrically arranged.

The structure of the first auxiliary device 401 and the second auxiliary device 402, which includes the guide rail 41 and the movable member 42, is illustrated as an auxiliary device; the guide rail 41 is arc-shaped, the outer arc surface of the guide rail 41 is close to the clamping jaw 2, the guide rail 41 extends from bottom to top in an arc shape from outside to inside by taking the direction shown in fig. 5 as a reference, and the guide rail is of a concave arc structure; the movable member 42 includes a first end 425 and a second end 426, the second end 426 is rotatably connected to the main body 1 through the rotating shaft 11, the first end 425 extends vertically to form a protruding column, and the protruding column extends vertically into the guide rail 41, so as to connect the movable member 42 and the guide rail 41.

To avoid interference, the second end 426 of the movable member 42 forms a cutting surface 6 adjacent the side wall of the jaw 2, the cutting surface 6 defining a relief space 63 with the jaw 2. To increase structural stability, an arcuate surface 427 is formed at the second end 426 of the movable member 42 about the half circumference of the rotary shaft 11, and an arcuate surface conforming to the arcuate surface 427 is formed in the main body 1. Of course, the number of movable members 42 is the same as the number of auxiliary devices, including the first movable member 421 and the second movable member 422.

The power assembly comprises a first portion 31 connected to the jaws 2 and a second portion 32 elastically connected to the body 1; specifically, the second portion 32 includes a mounting plate 321, a guide rail 322 perpendicular to the mounting plate 321, and a guide block 323, the mounting plate 321 is a plate-shaped body parallel to one side surface of the main body 1, and the guide rail 41 is disposed on the guide block 323; to limit the translational formation of the second portion 32, a step structure 12 is formed on the body 1, the guide block 323 being movable against the step structure 12.

The first part 31 comprises a piston 311 connected with the claw 2 after passing through a guide slideway 322, and an oil cylinder 312 for pushing the piston 311 to translate, wherein the oil cylinder 312 is fixedly connected to the outer side of the mounting plate 321 away from the main body 1.

The second portion 32 is elastically connected to the main body 1 through a restoring member 73, specifically, the mounting plate 321 is far away from the outer side of the main body 1 to form a base 71, a connecting rod 72 passes through the base 71 and the mounting plate 321 and then is connected to the main body 1, and most of the restoring member 73 sleeved outside the connecting rod 72 is located in the base 71, one end of the restoring member abuts against the inner wall of the base 71, and the other end abuts against the outer side wall of the main body 1.

In order to improve the structural stability, a first base 711 and a second base 712 with the same structure are symmetrically arranged on two sides of the oil cylinder 312 of the mounting plate 321; the first connecting rod 721 passes through the first base 711 and the mounting plate 321 and then is connected with the main body 1, the first resetting piece 731 is sleeved outside the first connecting rod 721, one end of the first resetting piece abuts against the inner wall of the first base 711, and the other end of the first resetting piece abuts against the outer side wall of the main body 1; the second connecting rod 722 passes through the second base 712 and the mounting plate 321 and then is connected with the main body 1, and the second resetting piece 732 is sleeved outside the second connecting rod 722, one end of the second resetting piece abuts against the inner wall of the second base 712, and the other end of the second resetting piece abuts against the outer side wall of the main body 1.

The clamping mechanism of the invention can be applied to drawing and pulling of round steel, as shown in fig. 8, in an initial state, a large space is reserved between the first clamping jaw 21 and the second clamping jaw 22, and the end part of an object, in the embodiment, the object is round steel, and is inserted after passing through a drawing die; at this time, the first end 425 of the first movable member 421 falls on the upper end of the first rail 411, the side wall of the first movable member 421 close to the first jaw 21 is attached to the inclined surface on the first jaw 21, the first end of the second movable member 422 falls on the upper end of the second rail 412, and the side wall of the second movable member 422 close to the second jaw 22 is attached to the inclined surface on the second jaw 22; both the first restoring member 731 and the second restoring member 732 are in an extended state.

As shown in fig. 9, the cylinder 312 pushes the piston 311 to translate upwards for a first stroke, that is, the first portion 31 of the power assembly translates relative to the second portion 32, so as to drive the claw 2 to move upwards, and under the cooperation of the inclined surface 13 in the main body 1, the claw 21 and the claw 22 approach each other to clamp the round steel 3, at this time, the second portion 32 remains relatively stationary, and the movable member 42 and the claw 2 remain in a fitted state;

when the drawing of the round steel is completed, the end part of the round steel needs to be separated from the clamping mechanism, at the moment, the end part of the round steel is extruded and deformed by the clamping jaw 2, so that the outer wall part of the round steel is embedded into the saw-tooth structure of the clamping jaw 2, the clamping jaw 2 and the round steel are tightly meshed, the movable piece 42 is abutted against the clamping jaw 2 to enable the round steel to be immovable, and the round steel cannot move along the axial direction; moreover, due to the reverse pulling force of the round steel to the claw 2, the piston 311 cannot translate downwards, i.e. the first portion 31 cannot reset;

as shown in fig. 10, under the action of the drawing force of the round bar, the first portion 31 is relatively stationary, the second portion 32 translates relative to the first portion 31, i.e. the second portion 32 translates upward by a second stroke, i.e. the guide rail 41 on the second portion 32 moves upward, while both the first restoring element 731 and the second restoring element 732 are in a compressed state;

the first boss 423 moves along the first track 411 to drive the second end 426 of the first movable member 421 to rotate clockwise around the first rotation shaft 111, the first end 425 of the first movable member 421 rotates in a direction away from the first jaw 21, and a first movable gap 51 between the first movable member 421 and the first jaw 21 is formed in cooperation with the first cutting surface 61;

the second boss 424 moves along the second track 412 to drive the second end of the second movable member 422 to rotate counterclockwise around the second rotation axis 112, the first end of the second movable member 422 rotates away from the second jaw 22, and a second movable gap 52 is formed between the second movable member 422 and the second jaw 22 in cooperation with the second cutting surface 62;

due to the existence of the movable gap 5 formed by the first movable gap 51 and the second movable gap 52, a movable space is provided for the first clamping jaw 21 and the second clamping jaw 22 to be separated from each other, so that round steel can be separated from the clamping jaw 2;

after the round steel is separated from the claw 2, the first reset piece 731 and the second reset piece 732 stretch and reset to drive the second part 32 to move downwards for reset, and due to the first step structure 121 and the second step structure 122 in the main body 1, the guide block 323 of the power assembly abuts against the step structure 12, so that the downward translation stroke of the second part 32 is limited.

The foregoing detailed description is provided to illustrate the present invention and not to limit the invention, and any modifications and changes made to the present invention within the spirit of the present invention and the scope of the appended claims fall within the scope of the present invention.

Claims

1. A clamping mechanism, comprising:

a main body (1);

the clamping claw (2) is arranged in the main body (1) and is used for clamping an object (3);

a power assembly comprising a first portion (31) connected to the jaws (2), and a second portion (32);

the auxiliary device comprises a guide rail (41) arranged on the second part (32), and a movable piece (42) connected with the guide rail (41);

the clamping mechanism has at least a first stroke and a second stroke,

in a first stroke, the first part (31) moves relative to the second part (32), the clamping jaw (2) clamps the object (3), and the movable piece (42) is propped against the clamping jaw (2);

in the second stroke, the first part (31) is relatively static, the second part (32) moves relative to the first part (31), and the guide rail (41) drives the movable piece (42) to rotate to form a movable gap (5) for the clamping jaw (2) to loosen the object (3).

2. The clamping mechanism of claim 1, wherein: the movable piece (42) is close to the side wall end of the clamping jaw (2) to form a cutting surface (6), and the cutting surface (6) and the clamping jaw (2) form an avoidance space.

3. The clamping mechanism according to claim 1 or 2, characterized in that: the movable piece (42) is rotationally connected with the main body (1) through the rotating shaft (11), and when the first end (425) of the movable piece (42) moves along the guide track (41), the second end (426) of the movable piece (42) rotates by taking the rotating shaft (11) as a fulcrum, so that the first end (425) of the movable piece (42) is far away from the clamping jaw (2), and a movable gap (5) between the movable piece (42) and the clamping jaw (2) is formed.

4. A clamping mechanism according to claim 3, wherein: the guide rail (41) is arc-shaped, and the outer arc surface of the guide rail is close to the clamping jaw (2).

5. The clamping mechanism of claim 1, wherein: the second portion (32) is elastically connected to the body (1).

6. The clamping mechanism of claim 1, wherein: the second part (32) comprises a mounting plate (321) parallel to the main body (1), a guide slideway (322) perpendicular to the mounting plate (321) and a guide block (323) capable of propping against the step structure (12) on the main body (1), and the guide rail (41) is arranged on the guide block (323).

7. The clamping mechanism of claim 6, wherein: the first part (31) comprises a piston (311) which is connected with the clamping jaw (2) after passing through a guide slideway (322), and an oil cylinder (312) for pushing the piston (311) to translate, wherein the oil cylinder (312) is connected with a mounting plate (321).

8. The clamping mechanism of claim 6, wherein: the mounting plate (321) is provided with a base (71), the connecting rod (72) is connected with the main body (1) after penetrating out of the base (71), and one end of a reset piece (73) sleeved in the connecting rod (72) in the base (71) is propped against the main body (1).

9. The clamping mechanism of claim 1, wherein: the clamping jaw (2) comprises a clamping jaw I (21) and a clamping jaw II (22), the auxiliary devices comprise a first auxiliary device (401) arranged on the side where the clamping jaw I (21) is located, and a second auxiliary device (402) arranged on the side where the clamping jaw II (22) is located, and the first auxiliary device (401) and the second auxiliary device (402) are symmetrically arranged.

10. The clamping mechanism of claim 1, wherein: an inclined surface (13) matched with the clamping jaw (2) is formed in the main body (1), and the inclined angle and the inclined direction of the inclined surface (13) are the same as those of the outer wall of the clamping jaw (2).