JPH08260200A - Work clamp device - Google Patents

Abstract

(57) [Summary] [Structure] A pair of upper and lower clamp pieces 5 and 6 are held in the longitudinal middle portion thereof so as to be vertically rotatable about a horizontal axis,
Rear end sides 5b, 6b sandwiching the rotation centers 12, 13 are adapted to come into contact with each other. And the tip side of the lower clamp piece 5
By supporting the work on the upper surface of 5a, the tip side 6a of the upper clamp piece 6 is relatively brought close to the tip side 5a of the lower clamp piece 5, and the work W is clamped. [Effect] The work W can be very easily operated by inserting the work W between the upper and lower clamp pieces 5 and 6 and supporting the work W on the upper surface of the tip side 5a of the lower clamp piece 5. It can be securely clamped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work clamp device for use in, for example, a suspension device for suspending and holding an aluminum material in a horizontal suspension state when an aluminum material is anodized.

[0002]

2. Description of the Related Art For example, in the alumite treatment of an aluminum material, a suspension device having an elevating function is used to hold the aluminum material in a laterally suspended state or the like, and the aluminum is sequentially applied to each treatment tank from pretreatment to sealing treatment. Soaking the material,
It is done like that.

[0003] For example, in this alumite treatment, in order to laterally suspend an aluminum material by a suspension device, conventionally, at one end side of the aluminum material, the one end portion is clamped by a clamp device (51) as shown in FIG. It was done by clamping at.

This clamp device (51) is a horizontal U-shaped frame (53) provided on a side surface of a suspension frame (52) of the suspension device.
It has a structure in which a bolt (54) is screwed into the upper side part (53b) of the aluminum material (W) so that the tip end of the aluminum material (W) can move forward and backward. It is arranged between the upper and lower side parts (53a) (53b) of 53), and the bolt (54) is screwed downward so that the bolt (54) and the lower side part (53a) The aluminum material (W) is clamped by clamping one end of the aluminum material (W).

[0005]

However, in the above clamp device (51), the aluminum material (W) is used.
One end of the aluminum material (W) is clamped to the upper and lower sides (53a) (53a) of the horizontal U-shaped frame (53).
b) Placed between them, and in that arrangement aluminum material (W)
The bolt (54) must be screwed while being supported by hand and held for a while, that is, supporting the aluminum material (W) and tightening the bolt (54) at the same time. This made it difficult for a single worker to do this, and the work was very cumbersome.

Moreover, a tool for tightening the bolt (54) is required, and the operation of tightening the bolt (54) by the tool itself is troublesome and very troublesome.

In view of the above-mentioned conventional problems, it is an object of the present invention to provide a work clamping device capable of extremely easily clamping a work by a simple operation.

[0008]

The above object is to provide a pair of upper and lower clamp pieces, each clamp piece being vertically rotatably held around a horizontal axis at its longitudinally intermediate portion, and The rear end sides of the rotation center are held so as to be in abutting engagement with each other, and the work is supported by the upper surface of the lower clamp piece on the front side of the rotation center, so that the weight of the work is reduced by its own weight. , The rear end side of the lower clamp is rotated upward, and the rear end side of the upper clamp piece is also rotated upward by abutting engagement between the rear end side of the lower clamp piece and the rear end side of the upper clamp piece. As a result, the tip side of the upper clamp piece is relatively brought close to the tip side of the lower clamp piece, and the work is clamped from the vertical direction on both tip sides of the upper and lower clamp pieces. And the workpiece clamping device Thus it is achieved.

In this case, the lower clamp piece is arranged such that the rear end side of the lower clamp piece is rotated upward by its own weight, and the upper clamp piece is arranged after the center of rotation. The end side is rotated downward by its own weight against the upward turning force of the rear end side due to the own weight of the lower clamp piece, and the tip side of the upper clamp piece is located at a predetermined height position. It is preferable that a rotation restricting portion that restricts rotation of the tip end side of the upper clamp piece upward from the initial standby position is provided in order to make the initial standby state.

[0010]

In the above clamping device, the work is inserted between the tip ends of the upper and lower clamp pieces, and the work is supported by the upper surface of the lower clamp piece on the tip side. It is firmly clamped at both tip sides.

[0011]

Embodiments of the present invention will be described below.

The clamp device of this embodiment is a clamp device of a suspension device used for suspending the aluminum material in a horizontal suspension state in the alumite treatment of the aluminum material. Needless to say, the clamp device of the present invention is not limited to this, and can be applied to various devices and equipment.

In FIG. 1, (1) is a suspension frame of the suspension device, (2) is a clamping device, and the clamp device (2) is attached to the suspension frame (1) with bolts (3). There is. In the clamp device (2), (4) is a base piece, (5) is a lower clamp piece, and (6) is an upper clamp piece.

The base piece (4) comprises a base body portion (9) having a vertical side surface (7), and upper and lower clamp pieces (5) are provided on the vertical side surface (7) of the base body portion (9). ) (6) is held.

The upper and lower clamp pieces (5) and (6) are respectively arranged along the vertical side surface (7) of the base main body (9).
With the clamp piece (5) on the lower side and the clamp piece (6) on the upper side, the bolt (10) is located at each intermediate position in the length direction.
It is held by (11) so that it can rotate in the vertical direction. Then, in this holding state, their rotation centers (12)
The rear end sides (5b) and (6b) sandwiching the (13) can be brought into abutting engagement with each other. Due to this engagement and abutment, a projection (14) for engagement and abutment is provided in a downwardly projecting state at the lower edge of the rear end side (6b) of the upper clamp piece (6). .

Then, the work (W), that is, an aluminum material in this embodiment, is supported on the upper surface of the tip end side (5a) sandwiching the rotation center (12) of the lower clamp piece (5), The upper and lower clamp pieces (5) and (6) are interlocked with each other by the weight of the work (W) so that the upper and lower clamp pieces (5) and (6) rotate.
a) is relatively close to the tip side (5a) of the lower clamp piece (5), and both tip sides (5) of the upper and lower clamp pieces (5) and (6) are
In (a) and (6a), the work (W) is designed to be clamped from above and below.

That is, this is, for example, as shown in the drawing, the rear end side (5b) of the upper and lower clamp pieces (5) (6).
The distance L1 between the engagement contact position (15) between the (6b) and the rotation center (13) of the upper clamp piece (6) is determined by the engagement contact position (15) and the lower clamp piece (13). 5) Rotation center (1
2) can be realized by designing the gap distance L2 to be shorter than L2.

Further, in a free state in which the work (W) is not held, the tip ends (5a) and (6a) of the upper and lower clamp pieces (5) and (6) are held open. The lower clamp piece (5) is configured such that the rear end side (5b) sandwiching the rotation center (12) is rotated upward by its own weight, and the upper clamp piece (6) is The rear end side (6b) sandwiching the moving center (13) is rotated downward by its own weight against the upward turning force of the rear end side (5b) by the own weight of the lower clamp piece (5). It is designed to be.

Further, in order to allow the tip side of the upper clamp piece (6) to initially stand by at a predetermined height position in a free state in which the work (W) is not held, the upper side of the upper waiting piece (6) is moved upward from the initial stand-by position. Tip side of the upper clamp piece (6) (6
A rotation restricting portion (16) for restricting the rotation of b) is provided. That is, the base piece (4) is provided with the orthogonal plate portion (17) which is connected to the base body portion (9) and is projected to the rear side of the upper and lower clamp pieces (5) and (6). The rear end side (6b) of the piece (6) is brought into contact with the inner vertical surface (19) of the orthogonal plate portion (17) in the process of being rotated from the upper side to the lower side and further rotated downward. Are regulated. In the present embodiment, the orthogonal plate portion (17) is further provided with an extension portion (20) connected thereto, and the base piece (4) and hence the clamp device (2) are connected via the extension portion (20). It is fixed to the suspension frame (1) with the bolts (3) as described above.

In the above clamp device (2), the work (W) is clamped as follows. That is, FIG.
As shown in FIG. 1, one end of the work (W) is inserted between the tip side (5a) (6a) of the upper and lower clamp pieces (5) (6), and the work (W) is inserted into the lower clamp piece ( It is supported on the upper surface of the tip side (5a) of 5). Then, the tip end side (5a) of the lower clamp piece (5) is rotated downward and the rear end side (5b) is rotated upward by the own weight of the work (W), whereby the upper side is rotated. The rear end side (6b) of the clamp piece (6) is rotated upward, the tip side (6a) thereof is rotated downward, and the tip side (6a) is the lower clamp piece (5).
Is relatively approached to the tip side (5a). As a result, the end of the work (W) is clamped and held by the tip ends (5a) (6a) of the upper and lower clamp pieces (5) (6).

When the clamp is released, the work (W) is lifted upward so that the upper and lower clamp pieces (5) and (6) are released from the tip side (5a) (6a). In that state, the work (W) can be removed by pulling it out. After this detachment, the rear end side (6b) of the upper clamp piece (6) is rotated downward by its own weight, and in this rotating process, the orthogonal plate portion (1) of the base piece (4) is rotated.
The clamp device (1) is brought into contact with the vertical surface (19) of 7) and is returned to the initial standby state.

As described above, according to the above-mentioned clamp device (2), one end of the work (W) is placed between the tip side (5a) (6a) of the upper and lower clamp pieces (5) (6). It is very easy to insert one end of the work (W) and support one end of the work (W) on the upper surface of the tip side (5a) of the lower clamp piece (5). Can be clamped securely. Therefore, in the alumite treatment of the work (W), the work (W) can be brought into a suspended state very easily without requiring labor.

Moreover, the height of one end of the work (W) to be clamped does not have to be constant, and the upper and lower clamp pieces (5) and (6) are clamped between the tip sides (5a) and (6a). If the work has a height less than the maximum possible height, it is possible to properly clamp and hold work of various heights with a clamp device of the same structure, even if the work has any height. As described above, the work can be clamped and held very easily by the extremely simple operation.

In addition, the upper and lower clamp pieces (5) (6)
In the initial standby state where the work (W) is not held,
By holding the front end sides (5a) and (6a) open vertically at a predetermined height position, the work (W) is held at the front end portions of the upper and lower clamp pieces (5) (6) ( Five
a) It can be inserted into (6a) very easily, and the work (W) can be clamped by a simpler operation.

[0025]

According to the above, the clamp device of the present invention is provided with a pair of upper and lower clamp pieces, and each clamp piece is held at the middle portion in the longitudinal direction thereof so as to be vertically rotatable about the horizontal axis. At the same time, the rear ends of the lower clamp piece are held so as to be in abutting engagement with each other, and the work is supported by the upper surface of the lower clamp piece on the front end side of the center of rotation. The rear end side of the lower clamp is rotated upward by the self-weight of the work, and the rear end side of the upper clamp piece is also contacted by the rear end side of the lower clamp piece and the rear end side of the upper clamp piece. By rotating upward, the tip side of the upper clamp piece is relatively brought close to the tip side of the lower clamp piece, and the work is clamped from the vertical direction on both tip sides of the upper and lower clamp pieces. There is something. Therefore, the work can be clamped and held very easily by an extremely simple operation of inserting the work between the tip sides of the upper and lower clamp pieces and supporting the work on the tip side upper surface of the lower clamp piece. You can

Moreover, the height of the work to be clamped does not have to be constant, and if the work has a height not higher than the maximum height that can be clamped between the upper and lower clamp pieces, the clamp having the same structure is used. The device can properly clamp and hold workpieces of various heights, and even if the workpiece has any height, it can be clamped and held very easily by the extremely simple operation as described above. can do.

In addition, the lower clamp piece is configured such that the rear end side which is sandwiched by the rotation center is rotated upward by its own weight, and the upper clamp piece is the rear end which is sandwiched by the rotation center. Side is rotated downward by its own weight against the upward turning force of the rear end side due to the own weight of the lower clamp piece, and the tip side of the upper clamp piece is set to a predetermined height position. The upper and lower clamp pieces are provided with a rotation restricting portion that restricts the rotation of the tip end side of the upper clamp piece above the initial standby position so that the upper and lower clamp pieces do not clamp the workpiece. In this state, their tip ends are held vertically open at a predetermined height position, so that the workpiece can be inserted between the tip portions of the upper and lower clamp pieces very easily, and Easy operation It is possible to clamp a click.

[Brief description of drawings]

1A and 1B show a clamp device according to an embodiment, FIG. 1A is a side view, and FIG. 1B is a plan view.

FIG. 2 is a side view showing a clamped state of a work by the clamp device.

FIG. 3 is a side view of a clamp device according to a conventional example.

[Explanation of symbols]

 2 ... Clamping device 5 ... Lower clamp piece 5a ... Tip side 5b ... Rear end side 6 ... Upper clamp piece 6a ... Tip side 6b ... Rear end side 12 ... Rotation center 13 ... Rotation center 14 ... Abutment engagement projection W ... work

Claims (2)

[Claims] 1. A pair of upper and lower clamp pieces is provided, and each clamp piece is vertically rotatably held around a horizontal axis at an intermediate portion in the longitudinal direction thereof, and a rear end sandwiching the center of the rotation. The work pieces are held so that their sides can contact and engage with each other, and the work piece is supported on the upper surface of the tip side that sandwiches the center of rotation of the lower clamp piece.
The rear end side of the lower clamp is rotated upward, and the rear end side of the upper clamp piece is also rotated upward by abutting engagement between the rear end side of the lower clamp piece and the rear end side of the upper clamp piece. , Whereby the tip side of the upper clamp piece is relatively brought close to the tip side of the lower clamp piece, and the work is clamped from the vertical direction on both tip sides of the upper and lower clamp pieces. Work clamp device. 2. The lower clamp piece is configured such that a rear end side that sandwiches a rotation center is rotated upward by its own weight, and the upper clamp piece is a rear end that sandwiches the rotation center. Side is rotated downward by its own weight against the upward turning force of the rear end side due to the own weight of the lower clamp piece, and the tip side of the upper clamp piece is set to a predetermined height position. The clamp device for a workpiece according to claim 1, further comprising a rotation restricting portion that restricts rotation of the tip end side of the upper clamp piece upward from the initial standby position so as to make the initial standby.