CN218801767U - Clamp - Google Patents

Abstract

The utility model provides an anchor clamps, relates to the anchor clamps field, including base, telescopic machanism, first rocking arm and second rocking arm, in set up on the base and place the platform, be located the one end of placing the platform sets up the dog, with base rotatable coupling sets up first rocking arm with the second rocking arm, telescopic machanism's one end with the head end rotatable coupling of first rocking arm, the end of first rocking arm be located with the position that the dog is relative, and in the end of first rocking arm sets up first pressure mechanism, telescopic machanism's the other end with the head end rotatable coupling of second rocking arm, the end of second rocking arm is located place the bench side, and in the end of second rocking arm sets up the second and supports pressure mechanism. This anchor clamps only need a driving piece can carry out two-way the tight of supporting to a plurality of parts, improves stability and the fastness to many parts centre gripping.

Description

Clamping device

Technical Field

The utility model relates to an anchor clamps especially relate to a can carry out two-way tight anchor clamps of supporting.

Background

The fixture is a device used for fixing parts in a mechanical manufacturing process so that the parts can occupy the correct positions to receive construction or detection. The existing clamps usually clamp and release the part by the relative movement of two clamping blocks. In this way, for a single part, better clamping can be performed, but for a plurality of parts, especially for shaft-shaped parts (hereinafter referred to as shaft parts), when clamping a plurality of shaft parts side by side, there are two ways generally, one way is to press both ends of the plurality of shaft parts tightly at the same time, but in view of the fact that the number of the plurality of shaft parts can be more or less and the radius can also be larger or smaller, when placing side by side, the length or length of the corresponding clamping block is shorter, the clamping block with the corresponding length is customized as required, and the cost is higher; the other mode is that only two shaft members which are positioned on the outermost side between a plurality of shaft members are abutted tightly, but the mode is not good for holding force, the holding force is too large, a part of the shaft members are extruded to float upwards or even fall out of a queue possibly, and the holding force is too small, so that the holding is not firm and is easy to loosen.

Therefore, in view of the above drawbacks, it is desirable to provide a jig that can provide stable clamping of a plurality of parts.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anchor clamps, this anchor clamps only need a driving piece can carry out two-way supporting tightly to a plurality of parts, improves the stability and the fastness to many parts centre gripping.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a fixture comprises a base, a telescopic mechanism, a first rocker arm and a second rocker arm, wherein a placing table is arranged on the base, a stop block is arranged at one end of the placing table, the first rocker arm and the second rocker arm are arranged in a rotatable connection with the base, one end of the telescopic mechanism is rotatably connected with the head end of the first rocker arm, the tail end of the first rocker arm is arranged at a position opposite to the stop block, a first abutting mechanism is arranged at the tail end of the first rocker arm, the other end of the telescopic mechanism is rotatably connected with the head end of the second rocker arm, the tail end of the second rocker arm is arranged above the placing table, and a second abutting mechanism is arranged at the tail end of the second rocker arm; on one hand, the telescopic end of the telescopic mechanism extends out to drive a rocker arm to rotate, in the process, the telescopic mechanism can also receive resistance from the rocker arm and a pressing mechanism on the rocker arm, the resistance reversely acts on the telescopic mechanism to promote the telescopic mechanism to reversely move, the reverse movement of the telescopic mechanism drives the other rocker arm to rotate, so that the rotary driving of the two rocker arms is realized through a single telescopic mechanism, on the other hand, after the pressing mechanism on any one rocker arm is pressed against a part, the telescopic end of the air cylinder continuously extends out to only promote the other rocker arm to continuously rotate until the pressing mechanism on the other rocker arm completely presses against the part, the driving performance of the telescopic mechanism on the rotation of the two rocker arms is ensured in two aspects, the two rocker arms respectively rotate around the rotatable connecting point of the base under the driving effect, so that the two pressing mechanisms are driven to press against the part in two different directions, and the bidirectional clamping is realized;

correspondingly, the telescopic mechanism comprises a cylinder;

correspondingly, the first rocker arm and the second rocker arm are both in an L-shaped structure;

correspondingly, the first abutting mechanism comprises a first abutting block which takes a plane or a curved surface as an abutting surface;

correspondingly, the second abutting mechanism comprises a plurality of stages of abutting units, the next stage of abutting unit can be rotatably arranged on the previous stage of abutting unit, each stage of abutting unit comprises at least one second abutting block, the number of the second abutting blocks in the next stage of abutting unit is more than that of the second abutting blocks in the previous stage of abutting unit, and the abutting unit positioned at the uppermost stage can be rotatably arranged at the tail end of the second rocker arm; by arranging the multi-stage pressing units, each stage of second pressing block has a certain degree of rotational freedom, so that the rotational fitting degree of the lowest pressing block to a part is improved, and particularly for special-shaped parts, the pressing force can be effectively improved;

correspondingly, the side profile of the second pressing block is of a triangular or semicircular structure;

correspondingly, one side of the second pressing block, which is used for pressing the part, is provided with a continuous concave-convex waveform or a plurality of continuous concave arcs; thereby improving the stability of the pressing.

The utility model has the advantages that:

on one hand, the first rocker arm and the second rocker arm are respectively and rotatably connected with the base, and two ends of the telescopic mechanism are respectively and rotatably connected with the first rocker arm and the second rocker arm, so that two ends of the telescopic mechanism have freedom degrees, and the rotary driving of the first rocker arm and the second rocker arm can be realized by means of one telescopic mechanism, so that the clamping in two directions is realized, and the clamping stability of multiple parts is ensured;

on the other hand, the second abutting mechanism comprises a plurality of stages of abutting units, and each stage of second abutting block has a certain degree of freedom of rotation through the plurality of stages of abutting units, so that the rotating fitting degree of the lowermost stage of abutting block to the part is improved, and the abutting force is improved.

Drawings

Fig. 1 is a schematic side view of a clamp according to an embodiment of the present invention, with a part of the base structure omitted;

fig. 2 is a schematic structural diagram of a base according to an embodiment of the present invention;

fig. 3 and 4 are schematic structural diagrams of two different second pressing blocks according to an embodiment of the present invention;

in the figure:

1. a part;

2. a placing table; 21. a stopper; 22. a side plate;

3. a first rotating shaft connecting structure; 4. a second rotating shaft connecting structure; 5. a first rocker arm; 6. a second rocker arm;

7. a cylinder; 71. a piston rod;

8. a first pressing block;

9. a second pressing block; 91. a concave-convex waveform; 92. concave arc shape.

Detailed Description

In the description of the present invention, it is to be understood that the words for indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are used only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1, in one embodiment of the present invention, the clamp comprises a base, a telescoping mechanism, a first swing arm 5 and a second swing arm 6;

in fig. 1, in order to clearly show the key technical structure, a part of the structure on the base is omitted, please further refer to fig. 2, a placing table 2 for placing the shaft members side by side is arranged on the base, a stop 21 is integrally formed with the placing table 2 at one end of the placing table 2, further, side plates 22 are arranged at two sides adjacent to the stop 21 to prevent the parts 1 from falling off from two sides, a rotating shaft connecting structure is arranged at one end of the base opposite to the stop 21 and is called a first rotating shaft connecting structure 3, another rotating shaft connecting structure is also arranged on the base at one end of the stop 21 and above the placing table 2 and is called a second rotating shaft connecting structure 4, and an avoiding space is arranged below the placing table 2 and is used for the occupation of the telescopic mechanism;

continuing with fig. 1, a first swing arm 5 and a second swing arm 6 are provided in rotatable connection with the base, in this embodiment, the first swing arm 5 and the second swing arm 6 are both of an "L" shaped configuration, the first swing arm 5 is rotatably connected with the first pivot connecting structure 3, and the second swing arm 6 is rotatably connected with the second pivot connecting structure 4, whereby the end of the first swing arm 5 is located opposite the stopper 21 and the end of the second swing arm 6 is located above the platform 2. In this embodiment, the telescopic mechanism is a unidirectional cylinder 7, the end of the piston rod 71 of the cylinder 7 is hinged to the head end (the head end is also the lower end in the drawing, the same applies below) of the first rocker arm 5, and the end of the cylinder sleeve of the cylinder 7 is hinged to the lower end of the second rocker arm 6. Therefore, when the piston rod 71 of the air cylinder 7 extends out (i.e. extends out to the right in this embodiment), the first rocker arm 5 is driven to rotate around the first rotating shaft connecting structure 3, so as to drive the first abutting mechanism at the upper end of the first rocker arm 5 to abut against the direction of the part 1, in view of the mutual action of the forces, the air cylinder 7 can push the cylinder sleeve end of the air cylinder 7 to move in the direction opposite to the extending direction of the piston rod 71 (i.e. move to the left in the figure, the same applies below) under the premise that the air cylinder 7 is not fixed, the movement of the air cylinder 7 drives the second rocker arm 6 to rotate around the second rotating shaft connecting structure 4, therefore, under the condition that the strokes of the first abutting mechanism and the second abutting mechanism from the part 1 are the same, the first abutting mechanism and the second abutting mechanism can abut against the part 1 at the same time, if the strokes are different, taking the case that the stroke between the first abutting mechanism and the part 1 is smaller than the stroke between the second abutting mechanism and the part 1 as an example, the rotation of the first rocker arm 5 drives the first abutting mechanism to abut against the right side of the part 1 first, at this time, the first rocker arm 5 cannot rotate under the drive of the cylinder 7, the extension of the piston rod 71 only enables the cylinder 7 to move in the direction opposite to the extension direction of the piston rod 71, so that the second rocker arm 6 is driven to rotate around the second rotating shaft connecting structure 4, the second abutting mechanism is driven to abut against the upper side of the part 1, and the two rocker arms can still be driven to rotate by the cylinder 7, so that the purpose of abutting against the part 1 from two directions is realized;

the tail end of the first rocker arm 5 is provided with a first abutting mechanism, and the tail end of the second rocker arm 6 is provided with a second abutting mechanism. In this embodiment, the first pressing mechanism is a rectangular first pressing block 8, so that the first pressing block 8 has a plane pressing surface (i.e. the left side surface of the first pressing block 8 in fig. 1). The second pressing mechanism comprises a plurality of stages of pressing units, the lower stage of pressing unit is rotatably arranged on the upper stage of pressing unit, each stage of pressing unit comprises at least one second pressing block 9, the number of the second pressing blocks 9 in the lower stage of pressing unit is more than that of the second pressing blocks 9 in the upper stage of pressing unit, and the pressing unit positioned at the uppermost stage is hinged at the tail end of the second rocker arm 6. In this embodiment, the second pressing mechanism includes two stages of pressing units, the pressing unit located at the upper stage is hinged to the upper end of the second rocker arm 6, the pressing unit located at the upper stage is set to be a second pressing block 9, the pressing unit located at the lower stage is hinged to the second pressing block 9 located at the upper stage, the pressing unit located at the lower stage is set to be two second pressing blocks 9, as shown in fig. 3 and 4, the side profile of the second pressing block 9 is a triangular or semicircular structure, and one side (i.e., the lower side in the figure) of the two pressing blocks, which is used for pressing the part 1, is provided with a continuous concave-convex waveform 91 or a plurality of continuous concave arcs 92.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. The utility model provides an anchor clamps, includes base, telescopic machanism, first rocking arm and second rocking arm, its characterized in that, set up on the base and place the platform, be located the one end of placing the platform sets up the dog, with base rotatable coupling sets up first rocking arm with the second rocking arm, telescopic machanism's one end with the head end rotatable coupling of first rocking arm, the end of first rocking arm be located with the position that the dog is relative, and in the end of first rocking arm sets up first pressure mechanism, telescopic machanism's the other end with the head end rotatable coupling of second rocking arm, the end of second rocking arm is located place the bench side, and in the end of second rocking arm sets up the second and supports pressure mechanism.

2. The clamp of claim 1, wherein the telescoping mechanism comprises a cylinder.

3. The clamp of claim 1, wherein the first rocker arm and the second rocker arm each have an "L" shaped configuration.

4. The jig according to claim 1, wherein the first pressing mechanism includes a first pressing block having a flat surface or a curved surface as a pressing surface.

5. The clamp according to claim 1, wherein the second pressing mechanism includes a plurality of stages of pressing units, the pressing unit of the next stage is rotatably disposed on the pressing unit of the previous stage, each stage of pressing unit includes at least one second pressing block, the number of the second pressing blocks in the pressing unit of the next stage is greater than that of the second pressing blocks in the pressing unit of the previous stage, and the pressing unit of the uppermost stage is rotatably disposed at the end of the second rocker arm.

6. The clamp of claim 5, wherein the profile of the side of the second pressing block is a triangular or semi-circular structure.

7. The clamp according to claim 5, wherein one side of the second pressing block for pressing the part is provided with a continuous concave-convex waveform or a plurality of continuous concave arcs.

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