CN111993304A

CN111993304A - Flexible three-finger clamp

Info

Publication number: CN111993304A
Application number: CN202010776260.3A
Authority: CN
Inventors: 林浩良; 杨铁牛
Original assignee: Wuyi University
Current assignee: Wuyi University
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2020-11-27

Abstract

The invention provides a flexible three-finger clamp, which comprises a shell, a rotating motor arranged in the shell, an inner rotating column, a connecting disc and flexible clamping jaws, wherein the inner rotating column is connected with the rotating motor through the connecting disc, the rotating column is provided with 3 inclined bar-shaped grooves, the shell is provided with a vertical bar-shaped groove matched with the inclined bar-shaped groove, a first connecting end of the flexible clamping jaw is sequentially connected with a sliding block, the vertical bar-shaped groove and the inclined bar-shaped groove through a connecting bolt, and a second connecting end of the flexible clamping jaw is fixed on the shell; the motor is adopted to drive the turntable to rotate, so that the clamping jaw is controlled to move up and down, the object is clamped by squeezing the clamping jaw, and when the clamping force is greater than the bearing force of a product, the clamping jaw generates slight plastic deformation to absorb the redundant clamping force due to the flexible material of the clamping jaw.

Description

Flexible three-finger clamp

Technical Field

The invention relates to the technical field of clamps, in particular to a flexible three-finger clamp.

Background

The clamping jaw air cylinder or the three-jaw air cylinder is generally adopted in industrial clamps, and when fragile and fragile products such as eggs and glass cups are clamped, a method of installing sponge at the clamping jaw is adopted to ensure that the products cannot be damaged in the clamping process.

However, some products are not only fragile but also different in size, so that the force of the clamping jaws is controlled at any time except for installing the sponge at the clamping jaws. And to the different problem of size of product, prior art is solved through changing the cylinder gas claw of corresponding size, and not only more smooth trouble like this, but also check cylinder gas claw dynamics and speed when the claw closes, lead to the cost increase of anchor clamps and increase the process of checking dynamics and speed like this.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the flexible three-finger clamp which can achieve the purpose of protecting fragile products through the flexibility of the clamp and meet the requirement of clamping various products with different sizes through the flexible deformation of the clamp.

The technical scheme of the invention is as follows: the utility model provides a flexible three-finger clamp, includes the casing, sets up rotating electrical machines, interior rotation post, connection pad in the casing and the same flexible clamping jaw of three structure, interior rotation post pass through the connection pad and be connected with rotating electrical machines to through the rotating electrical machines drive interior rotation post is rotatory, three a link of flexible clamping jaw all is connected with interior rotation post, another link is fixed on the casing, and when interior rotation post rotate, three the link that flexible clamping jaw and interior rotation post are connected can reciprocate on the casing, thereby realize three the clamp of flexible clamping jaw is tight or is loosened.

Preferably, all three flexible clamping jaws are made of flexible TPU materials.

Preferably, the flexible clamp comprises a first connecting end, a second connecting end and a clamping end, an arc-shaped arm is arranged between the first connecting end and the clamping end, and a connecting arm is arranged between the second connecting end and the clamping end.

Preferably, the rotating motor is connected with the connecting disc through a connecting flange, and an inner rotating column is arranged at the lower end of the connecting disc.

Preferably, the casing include shell, lower extreme shell, well end shell, upper end shell, the shell setting in the column spinner outside, the shell lower extreme be connected with lower extreme shell, the shell upper end be connected with well end shell, the upper end shell set up in the rotating electrical machines outside and be connected with well end shell.

Preferably, the inner rotating column is of a hollow structure, and three penetrating oblique strip-shaped grooves are further formed in the outer side wall of the inner rotating column.

Preferably, three vertical bar-shaped grooves matched with the oblique bar-shaped grooves are formed in the outer side wall of the shell.

Preferably, each vertical bar-shaped groove is also provided with a sliding rail with a notch, and the sliding rail is connected with a sliding block in a sliding manner; and the notch of the sliding rail is communicated with the vertical strip-shaped groove.

Preferably, the first connecting end of the flexible clamping jaw is connected with the sliding block through a connecting bolt, and the connecting bolt extends inwards and sequentially penetrates through a notch of the sliding rail, a vertical bar-shaped groove of the shell and an inner rotating column inclined bar-shaped groove.

Preferably, the second connecting end of the flexible clamping jaw is connected with the lower end shell.

Preferably, the angle between two adjacent flexible clamping jaws is 120 degrees.

When the internal rotation post rotate, because connecting bolt stretches into in the oblique bar-shaped recess of internal rotation post, consequently, flexible clamping jaw accessible slider reciprocate in the vertical bar-shaped recess of shell, because the clamping jaw adopts flexible material to make to the second connecting end of flexible clamping jaw is fixed on the lower extreme shell, consequently, when the clamping jaw moves down, the arc arm and the linking arm of clamping jaw all can extrude the shrink to central direction, the exposed core of clamping jaw extends to the central point of shell to realize the centre gripping action.

The invention has the beneficial effects that:

1. the clamping device is simple in structure and convenient to operate, and the three clamping jaws are made of flexible materials, so that the fragile objects are prevented from being broken in the clamping process;

2. the motor is adopted to drive the turntable to rotate, so that the clamping jaw is controlled to move up and down, the clamping of an object is realized by squeezing the clamping jaw, and when the clamping force is greater than the bearing capacity of a product, the clamping jaw generates slight plastic deformation to absorb the redundant clamping force due to the flexible material of the clamping jaw;

3. according to the invention, the three clamping jaws are mutually matched, so that the stress of the object from 3 places is ensured, the clamping stability is improved, the uniform stress of the object is ensured, and the object is prevented from being damaged;

4. the invention controls the space between the three clamping jaws by controlling the rotation size of the motor, thereby being suitable for clamping objects with different sizes.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the hidden part structure of the present invention;

FIG. 4 is a schematic view of a jaw of the present invention;

FIG. 5 is a schematic view of the structure of the inner spin column of the present invention;

FIG. 6 is a schematic structural view of the housing of the present invention;

in the figure, 1-rotating motor, 2-connecting flange, 3-connecting disc, 4-inner rotating column, 5-flexible clamping jaw, 6-outer shell, 7-lower end shell, 8-middle end shell, 9-upper end shell, 10-inclined strip-shaped groove, 11-vertical strip-shaped groove, 12-sliding rail, 13-notch, 14-sliding block, 15-connecting bolt, 16-first connecting end, 17-second connecting end, 18-clamping end, 19-arc arm and 20-connecting arm.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1-3, the present embodiment provides a flexible three-finger clamp, which includes a rotating electrical machine 1, an inner rotating column 4, a connecting plate 3, and three flexible clamping jaws 5 with the same structure, in the present embodiment, the rotating electrical machine 1 is connected to the connecting plate 3 through a connecting flange 2, the inner rotating column 4 is mounted at the lower end of the connecting plate 3 through a plurality of screws, and in the present embodiment, the rotating electrical machine 1 drives the connecting plate 3 to rotate, so as to drive the inner rotating column 4 to rotate. In addition, the inner rotary column 4 described in this embodiment is a hollow structure, and three penetrating oblique strip-shaped grooves 10 are further provided on the outer side wall of the inner rotary column 4, as can be seen in fig. 5.

In this embodiment interior rotation post 4 still be provided with

shell

6, 6 lower extremes of shell be provided with lower end shell 7, 6 upper ends of shell be connected with well

end shell

8, 8 upper ends of well end shell be connected with upper end shell 9, upper end shell 9 cover establish in the rotating electrical machines 1 outside to play the effect of protection rotating electrical machines 1.

As shown in fig. 6, three vertical grooves 11 for matching with the slanted grooves 10 are disposed on the outer side wall of the housing 6. Each vertical bar-shaped groove 11 is also provided with a sliding rail 12 with a notch 13, and the sliding rail 12 is connected with a sliding block 14 in a sliding way; and the notches 13 of the slide rails 12 are communicated with the vertical bar-shaped grooves 12.

As shown in fig. 3, three flexible clamping jaws 5 of the present embodiment are connected to the inner rotary column 4, and the angle between two adjacent flexible clamping jaws 5 is 120 degrees. In addition, in order to avoid the object damage of the clamping jaws 5 during the object clamping process, in this embodiment, three flexible clamping jaws 5 are made of flexible TPU material.

Preferably, as shown in fig. 4, the flexible clamping jaw 5 of the present embodiment includes a first connecting end 16, a second connecting end 17, and a clamping end 18, an arc-shaped arm 19 is disposed between the first connecting end 16 and the clamping end 18, and a connecting arm 20 is disposed between the second connecting end 17 and the clamping end 18. The first connecting end 16 of the flexible clamping jaw 5 is connected with the sliding block 14 through a connecting bolt 15, and the connecting bolt 15 extends inwards and sequentially passes through the notch 13 of the sliding rail 12, the vertical bar-shaped groove 12 of the shell 6 and the inclined bar-shaped groove 10 of the inner rotating column 4. And the second connecting end 17 of the flexible clamping jaw 5 is fixedly connected with the lower end shell 7.

Preferably, when the inner rotary column 4 described in this embodiment rotates, since the connecting bolt 15 extends into the slanted bar shaped groove 10 of the inner rotary column 4, the flexible clamping jaw 5 can move up and down in the vertical bar shaped groove 11 of the housing 6 through the slider 14, since the clamping jaw 5 is made of a flexible material, and the second connecting end 17 of the flexible clamping jaw 5 is fixed on the lower end shell 7, when the flexible clamping jaw 5 moves down, the arc-shaped arm 19 and the connecting arm 20 of the flexible clamping jaw 5 both squeeze and contract towards the central direction, and the clamping end 18 of the flexible clamping jaw 5 extends towards the central direction of the housing 6, so as to reduce the distance between the 3 clamping ends 18, thereby realizing the object clamping action. Correspondingly, when an object needs to be loosened, the rotating motor 1 rotates reversely, the sliding block 14 drives the first connecting end 16 of the flexible clamping jaw 5 to move upwards, and the clamping end 18 is far away from the center of the shell 5, so that the distance between the three clamping ends 18 is increased and decreased, and the object is loosened.

The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.

Claims

1. The flexible three-finger clamp is characterized by comprising a shell, a rotating motor arranged in the shell, an inner rotating column, a connecting disc and three mutually matched flexible clamping jaws with the same structure, wherein the inner rotating column is connected with the rotating motor through the connecting disc;

and when the inner rotary column rotates, the connecting ends of the three flexible clamping jaws and the inner rotary column can move up and down on the shell.

2. The flexible three-fingered clip of claim 1, wherein: the angle between any two adjacent flexible clamping jaws in the three flexible clamping jaws is 120 degrees.

3. The flexible three-fingered clip of claim 2, wherein: the three flexible clamping jaws are all made of flexible TPU materials.

4. The flexible three-fingered clip of claim 3, wherein: the flexible clamp comprises a first connecting end, a second connecting end and a clamping end, an arc-shaped arm is arranged between the first connecting end and the clamping end, and a connecting arm is arranged between the second connecting end and the clamping end.

5. The flexible three-fingered clip of claim 1, wherein: the rotating motor is connected with the connecting disc through the connecting flange, and the lower end of the connecting disc is provided with an inner rotating column.

6. The flexible three-fingered clip of claim 5, wherein: the inner rotating column is of a hollow structure, and three penetrating oblique strip-shaped grooves are further formed in the outer side wall of the inner rotating column.

7. The flexible three-fingered clip of claim 1, wherein: the casing include shell, lower extreme shell, well end shell, upper end shell, the shell setting in the column spinner outside, the shell lower extreme be connected with the lower extreme shell, the shell upper end be connected with well end shell, the upper end shell set up in the rotating electrical machines outside and be connected with well end shell.

8. The flexible three-fingered clip of claim 7, wherein: the outer side wall of the shell is provided with three vertical bar-shaped grooves which are matched with the oblique bar-shaped grooves.

9. The flexible three-fingered clip of claim 8, wherein: each vertical bar-shaped groove is also provided with a sliding rail with a notch, and a sliding block is connected to the sliding rail in a sliding manner; and the notch of the sliding rail is communicated with the vertical strip-shaped groove.

10. The flexible three-finger grip of claim 4, wherein: the first connecting end of the flexible clamping jaw is connected with the sliding block through a connecting bolt, and the connecting bolt extends inwards and sequentially penetrates through a notch of the sliding rail, a vertical bar-shaped groove of the shell and an inner rotating column inclined bar-shaped groove;

and the second connecting end of the flexible clamping jaw is connected with the lower end shell.