CN220074720U - Mechanical gripper - Google Patents

Abstract

The utility model relates to a mechanical gripper which comprises a frame body, arc-shaped elastic pieces and a pushing mechanism, wherein the frame body is provided with the two arc-shaped elastic pieces which are symmetrical to each other, the cross section of each arc-shaped elastic piece is arc-shaped, the pushing mechanism is provided with two poking blocks, the poking blocks are provided with U-shaped poking parts matched with the arc-shaped elastic pieces, and the pushing mechanism is used for pushing the two poking blocks to be close to or far away from each other. The utility model provides a mechanical gripper, which adopts an arc-shaped elastic sheet to replace a clamping jaw and can clamp fragile objects.

Description

Mechanical gripper

Technical Field

The utility model relates to the technical field of mechanical grippers, in particular to a mechanical gripper.

Background

When the manipulator is used, the manipulator is usually arranged at the front end of the manipulator to clamp parts, and the common manipulator comprises clamping jaws, sucking discs, magnets or hooks, so that the shape and the material of an object to be clamped are adjusted to ensure firm and safe clamping of the object.

The clamping jaw is the most commonly used mechanical gripper, is widely applied to various mechanical automatic production systems, has the advantages of simplicity, reliability, wide applicability and the like, can adapt to different objects by adjusting the shape and the size of the clamping jaw, is suitable for grabbing objects of various shapes and sizes, and can adapt to different application scenes. However, for some fragile or delicate objects, the jaws may exert excessive pressure causing damage.

Disclosure of Invention

The utility model aims to solve the technical problems and provide a mechanical gripper which adopts an arc-shaped elastic sheet to replace a clamping jaw and can clamp fragile objects.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a mechanical tongs, includes support body, arc shell fragment and pushing mechanism, be provided with two mutual symmetrical arc shell fragments on the support body, the cross section of arc shell fragment is convex, be provided with two on the pushing mechanism and stir the piece, stir the piece on be provided with arc shell fragment complex "U" shape and stir the portion, pushing mechanism is used for promoting two and stir the piece and be close to each other or keep away from.

Further, the pushing mechanism is a finger cylinder, and the two poking blocks are respectively arranged on the two clamping jaws of the finger cylinder.

Further, the outside cladding of arc shell fragment is provided with the silica gel cover.

Further, anti-skid patterns are arranged on the outer side of the silica gel sleeve.

After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:

according to the utility model, the arc-shaped elastic pieces are adopted to replace clamping jaws, when the two arc-shaped elastic pieces are close, the parts are clamped under the action of elastic force, the pressure applied to the parts can be within a certain range, fragile objects can not be damaged, the arc-shaped elastic pieces are stirred by the stirring blocks, the bottom ends of the arc-shaped elastic pieces face to the corresponding sides, so that the bottom ends of the two arc-shaped elastic pieces are mutually close to or far away from each other, and the objects are clamped;

the outer side of the arc-shaped elastic sheet can be provided with the silica gel sleeve so as to play a role in protecting, the arc-shaped elastic sheet is prevented from scratching the outer surface of a part, and the anti-skid patterns formed on the outer surface of the silica gel sleeve can increase the stability of clamping.

The utility model will now be described in detail with reference to the drawings and examples.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is an exploded view of the present utility model;

fig. 4 is a state change diagram of the arc spring.

In the drawings, the list of components represented by the various numbers is as follows:

1. a frame body; 11. a fixing plate; 12. a U-shaped plate; 13. a mounting plate; 14. a fixed block; 2. an arc-shaped elastic sheet; 21. a silica gel sleeve; 3. a pushing mechanism; 4. a poking block; 41. the U-shaped poking part.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1, fig. 2 and fig. 3, a mechanical gripper comprises a frame body 1, an arc-shaped elastic sheet 2 and a pushing mechanism 3, wherein two arc-shaped elastic sheets 2 which are symmetrical to each other are arranged on the frame body 1, the cross section of each arc-shaped elastic sheet 2 is arc-shaped, two stirring blocks 4 are arranged on the pushing mechanism 3, a U-shaped stirring part 41 which is matched with the arc-shaped elastic sheet 2 is arranged on the stirring blocks 4, and the pushing mechanism 3 is used for pushing the two stirring blocks 4 to be close to or far away from each other.

Specifically, the "U" shaped stirring portion 41 is in an inverted "U" shape, two ends of the bottom of the "U" shaped stirring portion 41 are located at the inner side and the outer side of the arc-shaped elastic sheet 2 (as shown in fig. 1, the inner side and the outer side are the left side and the right side (or the right side and the left side) of the arc-shaped elastic sheet 2), the front side and the rear side of the stirring block 4 located at the arc-shaped elastic sheet 2 are both provided with "U" shaped stirring portions 41, one end of the bottom of the "U" shaped stirring portion 41 located at the outer side is used for stirring the arc-shaped elastic sheet 2 inwards, and one end of the bottom of the "U" shaped stirring portion 41 located at the inner side is used for stirring the arc-shaped elastic sheet outwards;

the U-shaped toggle part 41 is used for pushing two sides of the arc-shaped elastic sheet 2 (namely two ends of the arc-shaped cross section) to change the direction of the two sides of the arc-shaped elastic sheet 2, so that the bottom end of the arc-shaped elastic sheet 2 is changed.

As an implementation manner, the pushing mechanism 3 is a finger cylinder, and the two poking blocks 4 are respectively arranged on the two clamping jaws of the finger cylinder.

Preferably, the outer side cladding of arc shell fragment 2 is provided with silica gel cover 21, the outside of silica gel cover 21 is provided with the anti-skidding line.

The working principle of the utility model is as follows:

in the initial state, the state schematic diagram of the two arc-shaped shrapnel 2 is shown in fig. 1.

When in clamping, a part to be clamped is positioned between the two arc-shaped elastic pieces 2, the finger cylinder pushes the two poking blocks 4 to be close to each other, the arc-shaped elastic pieces 2 are poked inwards through the U-shaped poking parts 41, the bottom end of the arc-shaped elastic pieces 2 is turned to the inner side, as shown in fig. 4, and the part is clamped;

when the parts are required to be loosened, the finger cylinder pushes the two poking blocks 4 to be away from each other, the arc-shaped elastic sheet 2 is poked to the outside through the U-shaped poking part 41, and the bottom end of the arc-shaped elastic sheet 2 is enabled to turn to the outside, so that the parts are loosened.

Example 2:

the present embodiment is substantially the same as that of embodiment 1, except for the improvement in the structure of the frame body 1.

In order to ensure that the gripper can normally operate, the gripper needs to be regularly overhauled and maintained regularly, the appearance of the gripper is regularly cleaned to remove dust, dirt or other impurities, keep the gripper clean and corrosion-free, and whether the fasteners on the gripper are firm or not, so that the direct stability of each part is realized.

Therefore, the frame body 1 is designed, so that the disassembly of the grippers is convenient, and the daily maintenance and overhaul are convenient.

As shown in fig. 2 and 3, in this embodiment, the gripper is used for grabbing parts in the vertical direction, the frame 1 includes fixed plate 11, U-shaped plate 12, mounting panel 13 and fixed block 14, U-shaped plate 12 sets up in the bottom of fixed plate 11, pushing mechanism 3 (i.e. finger cylinder) sets up in the front surface of fixed plate 11, mounting panel 13 sets up in the lower surface front end of U-shaped plate 12, and two mounting grooves that are used for installing arc shell fragment 2 have been seted up to the bottom of mounting panel 13, the top shape and the mounting groove adaptation of arc shell fragment 2, and the fixed orifices have been seted up on the inside wall of mounting groove, the through-hole with fixed orifices complex is seted up on the top of arc shell fragment 2, one side of fixed block 14 is provided with fixed orifices complex cylinder arch, fixed block 14 is fixed in mounting panel 13 through the bolt, and the cylinder arch inserts in the fixed orifices after running through-hole, in order to be fixed in the mounting groove with arc shell fragment 2.

Preferably, gaskets are arranged on the outer sides of the cylindrical protrusions, which are located on the two sides of the arc-shaped elastic sheet 2.

Specifically, the fixing plate 11, the U-shaped plate 12, the mounting plate 13 and the fixing block 14 are all fixed through bolt connection, the finger cylinder is fixed on the fixing plate 11 through bolts, and a plurality of mounting holes are formed in the fixing plate 11 and used for being assembled with other instruments (such as a manipulator).

The foregoing is illustrative of the best mode of carrying out the utility model, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the utility model is defined by the claims, and any equivalent transformation based on the technical teaching of the utility model is also within the protection scope of the utility model.

Claims (4)

1. The mechanical gripper is characterized by comprising a frame body (1), arc-shaped elastic pieces (2) and a pushing mechanism (3), wherein the two arc-shaped elastic pieces (2) which are symmetrical to each other are arranged on the frame body (1), the cross section of each arc-shaped elastic piece (2) is arc-shaped, two stirring blocks (4) are arranged on the pushing mechanism (3), a U-shaped stirring part (41) which is matched with the arc-shaped elastic pieces (2) is arranged on the stirring blocks (4), and the pushing mechanism (3) is used for pushing the two stirring blocks (4) to be close to or far away from each other.

2. The mechanical gripper according to claim 1, wherein the pushing mechanism (3) is a finger cylinder, and the two toggle blocks (4) are respectively arranged on two clamping jaws of the finger cylinder.

3. The mechanical gripper according to claim 1, characterized in that the outer side of the arc-shaped elastic sheet (2) is coated with a silicone sleeve (21).

4. A mechanical gripper according to claim 3, characterized in that the outer side of the silicone sleeve (21) is provided with anti-slip threads.