Mechanical claw

Abstract

The utility model relates to the technical field of mechanical claws, and discloses a mechanical claw which comprises a mounting frame, L-shaped through grooves are formed in the two sides of the mounting frame correspondingly, first trapezoidal blocks are slidably mounted in the L-shaped through grooves correspondingly, a second trapezoidal block is slidably mounted between the first trapezoidal blocks, and an electric push rod is mounted in the middle of one side of the mounting frame. The output shaft end of the electric push rod penetrates into the mounting frame to be connected with the second trapezoidal block, a fixing frame is arranged at one end of the first trapezoidal block, a first claw arm and a second claw arm are detachably mounted on the fixing frame, a plurality of elastic mechanisms are mounted on the inner sides of the first claw arm and the second claw arm at equal intervals, and limiting holes are formed in one sides of the top ends of the elastic mechanisms; a first sleeve is arranged on one side of the fixing frame, and a limiting assembly used for fixing the first claw arm and the second claw arm is installed in the first sleeve. According to the grabbing device, irregular workpieces can be grabbed conveniently, the firmness and stability during grabbing are improved, the requirement for work diversification is met, and the first claw arm and the second claw arm can be replaced conveniently.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of mechanical claws, in particular to a mechanical claw. BACKGROUND

[0002] With the gradual development of mechanical automation, the degree of mechanization in production and life is higher and higher, and the field where machinery can be used instead of manual work is also more and more. Nowadays, the use of mechanical claws is more and more, the application range of the mechanical claws is wider and wider, and the functional requirements of the mechanical claws are also higher and higher.

[0003] When the existing mechanical claw is used to grab an irregular workpiece, the firmness and stability of the grabbing are poor due to the absence of a special structure, the grabbing is difficult, the diversified work requirements cannot be met, and when one claw arm is damaged and needs to be replaced in the working process, it is troublesome, thereby reducing the production efficiency. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problem that the existing mechanical claw is used to grab an irregular workpiece, the firmness and stability of the grabbing are poor due to the absence of a special structure, the grabbing is difficult, the diversified work requirements cannot be met, and when one claw arm is damaged and needs to be replaced in the working process, it is troublesome, thereby reducing the production efficiency, the application provides a mechanical claw.

[0005] The application provides a mechanical claw which adopts the following technical scheme:

[0006] A mechanical claw comprises a mounting frame, L-shaped through grooves are formed in the two sides of the mounting frame, first trapezoidal blocks are slidably installed in the L-shaped through grooves, respectively, a second trapezoidal block is slidably installed between the first trapezoidal blocks, an electric push rod is installed in the middle of one side of the mounting frame, the output shaft end of the electric push rod penetrates into the mounting frame and is connected with the second trapezoidal block, a fixed frame is arranged at one end of the first trapezoidal block, a first claw arm and a second claw arm are detachably installed on the fixed frame, respectively, a plurality of elastic mechanisms are installed at the inner sides of the first claw arm and the second claw arm at equal intervals, respectively, a limiting hole is formed in the top end on one side, a first sleeve is arranged on one side of the fixed frame, and a limiting assembly for fixing the first claw arm and the second claw arm is installed in the first sleeve.

[0007] Preferably, the first trapezoidal block adopts a right-angle trapezoidal structure, and the second trapezoidal block adopts an isosceles trapezoidal structure.

[0008] Preferably, a limiting groove is formed in the inside of one side of the first trapezoidal block, and the second trapezoidal block is slidably installed in the limiting groove on the two sides, respectively.

[0009] Preferably, the elastic mechanism comprises a second sleeve mounted inside the first claw arm and the second claw arm, a sliding column sleeved inside the second sleeve, and a first spring mounted between the second sleeve and the inner wall of the sliding column, and the outside of the sliding column is provided with a clamping block.

[0010] Preferably, the limiting assembly comprises a movable rod slidingly penetrating and mounted in the first sleeve, a T-shaped rod connected with the movable rod, and a second spring sleeved outside the movable rod, one end of the T-shaped rod is slidingly mounted in the first sleeve, one end of the second spring is connected with the T-shaped rod, and the other end is connected with the inner wall of the first sleeve.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The mechanical claw is driven by the electric push rod, the spacing between the first claw arm and the second claw arm is adjusted, the purpose of grabbing work is achieved, the irregular workpiece is conveniently grabbed, the firm stability during grabbing is improved, the diversified work demand is met, and the first claw arm and the second claw arm are conveniently replaced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic view of the utility model;

[0014] Figure 2 It is the utility model Figure 1 It is the enlarged view of A in the utility model;

[0015] Figure 3 It is the sectional view of the mounting frame in the utility model;

[0016] Figure 4 It is the internal structure schematic view of the elastic mechanism in the utility model.

[0017] The reference signs are explained as follows: 1, mounting frame; 2, L-shaped through slot; 3, first trapezoidal block; 4, electric push rod; 5, second trapezoidal block; 7, fixed frame; 8, first claw arm; 9, second claw arm; 10, first sleeve; 11, second sleeve; 12, sliding column; 13, first spring; 14, clamping block; 15, movable rod; 16, second spring; 17, T-shaped rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer toFigures 1 to 4 The utility model provides a technical scheme:

[0020] A mechanical claw, including installation frame 1, both sides of installation frame 1 are equipped with L type through slot 2, first trapezoidal block 3 is slidably installed in L type through slot 2 respectively, second trapezoidal block 5 is slidably installed between first trapezoidal block 3, and electric push rod 4 is installed in the middle of one side of installation frame 6, and the output shaft end of electric push rod 4 penetrates to installation frame 1 and is connected with second trapezoidal block 5, first trapezoidal block 3 one end is provided with fixed frame 7, first claw arm 8 and second claw arm 9 are threadedly connected and installed on fixed frame 7 respectively, and a plurality of elastic mechanisms are installed at the inboard of first claw arm 8 and second claw arm 9 respectively, and a limiting hole is formed in the top end side, and first sleeve 10 is arranged on one side of fixed frame 7, and limiting assembly for fixing first claw arm 8 and second claw arm 9 is installed in first sleeve 10.

[0021] When working, second trapezoidal block 5 is driven by electric push rod 4 to slide back and forth between two first trapezoidal blocks 3, so as to adjust the spacing between two first trapezoidal blocks 3, the spacing between first claw arm 8 and second claw arm 9 is adjusted by first trapezoidal block 3, so as to achieve the purpose of grabbing work, a plurality of elastic mechanisms are installed on the inboard of first claw arm 8 and second claw arm 9, so as to facilitate the grabbing of irregular workpieces, improve the firm stability during grabbing, meet the diversified needs of work, and first claw arm 8 and second claw arm 9 are detachably installed between fixed frame 7, so as to facilitate the replacement of first claw arm 8 and second claw arm 9.

[0022] First trapezoidal block 3 adopts a right trapezoidal structure, and second trapezoidal block 5 adopts an isosceles trapezoidal structure, so that when second trapezoidal block 5 slides between two first trapezoidal blocks 3, it can drive two first trapezoidal blocks 3 to move away from each other or close to each other, thereby grabbing the workpiece.

[0023] A limiting groove is formed in the inside of one side of first trapezoidal block 3, limiting blocks are arranged on both sides of second trapezoidal block 5 and are slidably connected with the limiting groove, thereby playing a limiting and guiding role and improving the stability of the movement of second trapezoidal block 5.

[0024] It should be noted that guide grooves are formed in installation frame 1 and located on both sides of L type through slot 2, and guide blocks are symmetrically arranged on one end of first trapezoidal block 3 and are slidably connected with the guide grooves, thereby improving the stability of the sliding of first trapezoidal block 3 in L type through slot 2.

[0025] The elastic mechanism comprises a second sleeve 11 mounted inside the first claw arm 8 and the second claw arm 9, a sliding column 12 sleeved inside the second sleeve 11, and a first spring 13 mounted between the inner wall of the second sleeve 11 and the sliding column 12, and the outside of the sliding column 12 is provided with a clamping block 14; when the irregular workpiece is gripped, the first claw arm 8 and the second claw arm 9 move towards the workpiece direction respectively until the clamping block 14 contacts the outer surface of the workpiece; under the action of the first spring 13, some clamping blocks 14 in the elastic mechanism retract into the second sleeve 11 along with the sliding column 12, and some clamping blocks 14 extend along with the sliding column 12, so that the contact area with the workpiece is increased, and the gripping effect is improved.

[0026] The limiting assembly comprises a movable rod 15 slidably penetrating and mounted in the first sleeve 10, a T-shaped rod 17 connected with the movable rod 15, and a second spring 16 sleeved outside the movable rod 15; one end of the T-shaped rod 17 is slidably mounted in the first sleeve 10, one end of the second spring 16 is connected with the T-shaped rod 17, the other end is connected with the inner wall of the first sleeve 10, and the T-shaped rod 17 is matched with the limiting hole.

[0027] During installation, the movable rod 15 is first pulled outwards relative to the first sleeve 10, the first claw arm 8 and the second claw arm 9 are respectively sleeved on the fixed frame 7, and the first claw arm 8 and the second claw arm 9 are screwed and connected by being rotated; after being screwed and connected, the insertion holes on the first claw arm 8 and the second claw arm 9 are opposite to the position of the T-shaped rod 17; the movable rod 15 is released, the second spring 16 restores the elastic force, the T-shaped rod 17 is inserted into the limiting hole for limiting and fixing, and the first claw arm 8 and the second claw arm 9 are prevented from loosening during work, so that the firmness of installation is improved.

[0028] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0029] Secondly: the structure involved in the drawings of the utility model discloses the embodiment, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0030] Finally: the above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0031] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A mechanical gripper, characterized by: The utility model relates to a kind of installation frame, including installation frame (1), L-shaped through slot (2) is set in the both sides of installation frame (1), first trapezoidal block (3) is slidably installed in L-shaped through slot (2) respectively, second trapezoidal block (5) is slidably installed between the first trapezoidal block (3), electric push rod (4) is installed in the middle of one side of installation frame (1), the output shaft end of electric push rod (4) is connected with second trapezoidal block (5) by penetrating into installation frame (1), fixed frame (7) is arranged in one end of first trapezoidal block (3), first claw arm (8) and second claw arm (9) are threadedly connected and installed on fixed frame (7) respectively, the inside of first claw arm (8) and second claw arm (9) is respectively installed with several elastic mechanisms at equal intervals, and limit hole is set in top end side, first sleeve (10) is arranged in one side of fixed frame (7), limit component for fixing first claw arm (8) and second claw arm (9) is installed in first sleeve (10).

2. A mechanical gripper according to claim 1, characterized in that: The first trapezoidal block (3) adopts a right-angle trapezoidal structure, and the second trapezoidal block (5) adopts an isosceles trapezoidal structure.

3. A mechanical gripper according to claim 2, wherein: The first trapezoidal block (3) is internally provided with a limiting groove on one side, and the second trapezoidal block (5) is provided with limiting blocks in sliding connection with the limiting groove on both sides.

4. A mechanical gripper according to claim 3, wherein: The elastic mechanism comprises a second sleeve (11) mounted in the inner side of the first claw arm (8) and the second claw arm (9), a sliding column (12) slidably sleeved in the second sleeve (11), and a first spring (13) mounted between the second sleeve (11) and the inner wall of the sliding column (12), and the outer side of the sliding column (12) is provided with a clamping block (14).

5. A mechanical gripper according to claim 4, wherein: The limit component comprises a movable rod (15) slidably penetratingly mounted in the first sleeve (10), a T-shaped rod (17) connected with the movable rod (15), and a second spring (16) sleeved on the outer side of the movable rod (15), one end of the T-shaped rod (17) is slidably mounted in the first sleeve (10), one end of the second spring (16) is connected with the T-shaped rod (17), and the other end is connected with the inner wall of the first sleeve (10), and the T-shaped rod (17) is matched with the limit hole.

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