JP2754931B2 - Clamping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device for positioning and fastening a panel material at a predetermined position.

[0002]

2. Description of the Related Art For example, in a car production line,
An automobile body is formed by welding a large number of panel materials. When a welding operation is performed, each panel material needs to be positioned and fixed at a predetermined position. FIG.
It is a figure which shows the clamp apparatus conventionally used for the stage which forms an assembly line of a motor vehicle in order to position and fasten the above-mentioned panel material in a predetermined position. As shown in the drawing, the conventional clamping device is provided with a panel receiving seat 12 having a locating pin 11 at an upper end portion of the device main body 10, and the locating pin 11 is inserted into a hole formed in a panel material W forming an automobile body. The panel material W is fitted and positioned on the receiving seat 12. A slit 13 extending from the receiving seat 12 to the apparatus main body 10 is formed in the center of the locating pin 11, and a clamp arm 14 is swingable about the shaft 15 in the slit 13. The panel material W is fastened by the clamp arm 14 and the receiving seat 12. This clamp arm 14 is driven by a cylinder 16 provided in the apparatus main body 10.

[0003]

In the conventional clamping device shown in the figure, only one type of hole diameter formed in the panel material W is determined by the locating pin 11. Therefore, when many types of panel materials W are mixed and conveyed to the vehicle body assembly line, FIG.
In order to use the clamping device shown in (1), it is necessary to form a positioning hole having the same diameter in the same place for all types of panel materials. However, depending on the type of panel material, it may not be possible to form a positioning hole having the same diameter at the same location. This is because, as the positioning hole, a hole through which components such as a harness and a hose penetrate may be used, and the diameter of the hole may need to be changed depending on the type of panel material. . Therefore, conventionally, when the type of the panel material W that can be positioned by one locating pin 11 is limited, it is necessary to install a clamp device having another guide pin having a different outer diameter at another position. However, there has been a problem that the configuration of each stage constituting the body assembly line is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and a clamp device capable of positioning and clamping a plurality of types of panel materials having mutually different positioning hole diameters by one clamp device. The purpose is to provide.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a locating pin which is fitted in a positioning hole formed in a panel material adjacent to a receiving seat which is attached to a support member and supports the panel material. the provided mounting the locating pins driving means for driving retractably move the locate pin in the axial direction to the support member, the respective positioning holes formed in the plurality of types of said panel member on the outer peripheral surface of the locating pin
A plurality of fitting portions which correspond respectively integrally formed, providing a forward and backward movable clamping member to a direction inclined with respect to the linear moving direction of the locating pin in the formed accommodating groove in said locating pin, said clamp Near the tip of the member
By moving the clamp member linearly,
The panel is protruded from the accommodation groove and is
Forming a clamp portion for holding the clamp member, connecting a clamp member driving means for driving the clamp member to be able to move forward and backward, to the locate pin drive means, and using the locate pin drive means to correspond to a positioning hole of the panel; A clamp device having a predetermined outer diameter positioned on a surface of the receiving seat and fastening a panel material by the receiving seat and the clamp member.

[0006]

[Action] A locating pie in which a plurality of fitting portions are integrally formed.
The emission, corresponding to the outer diameter of the positioning holes formed in the panel material to be clamped, thereby advancing withdrawal movement with a predetermined stroke. During this forward and backward movement, the clamp member also moves in synchronization. When the clamp member is moved linearly while the panel material is placed on the receiving seat and the locating pin is fitted in the positioning hole of the panel material, the clamp
The clamp formed near the tip of the member
The panel material is protruded, and the panel material is clamped between the clamp portion and the receiving seat. If the type of panel material to be clamped is different and the inner diameter of the positioning hole changes, the locating pin is moved by a predetermined stroke correspondingly. Thus, the panel material can be positioned and clamped by one clamping device corresponding to a plurality of positioning holes having different inner diameters of the positioning holes.

[0007]

Next, a clamp device according to an embodiment of the present invention shown in the drawings will be described. The substrate 21 of the clamp device is fixed to a base (not shown) of a stage constituting an assembly line of a vehicle body. As shown in FIG. 2, two brackets 22 are fixed to the substrate 21, and a panel support 23 is attached to the ends of these brackets 22. The panel material W as a work is placed on the upper surface of the panel support 23. A cylinder 24 is attached to the lower end of the substrate 21.
The vertical movement plate 26 is attached to 5. Accordingly, the vertical movement plate 26 reciprocates in the vertical direction as shown by arrows in FIG. A locating pin 28 is attached to an upper end of the vertically moving plate 26 via a bracket 27. The locating pin 28 has a first fitting portion 28a having a maximum diameter from a lower end portion to an upper end portion,
A second fitting portion 28b having a smaller diameter than this and a third fitting portion 28c having a smaller diameter than this are formed, and a tapered portion 29a is provided between the first fitting portion 28a and the second fitting portion 28b. The second fitting portion 28b and the third fitting portion 28c are linked by a tapered portion 29b. And the third fitting part 2
Above 8c, it is connected to a guide straight portion 28d having a minimum diameter via a tapered portion 29c.

[0008] The locate pin 28 having such a shape.
Are extended in the axial direction and are 180 ° out of phase with each other.
One guide groove 30 is formed. The panel receiving base 23 is in contact with these guide grooves 30. Therefore, when the vertical movement plate 26 is moved by driving the cylinder 24, the locate pin 28 is guided by the panel receiving base 23 at the guide groove 30 and moves up and down. An accommodation groove 31 is formed in the center of the locate pin 28, and the accommodation groove 31 is opened at both upper and lower ends of the locate pin 28 and the left side in FIG. And
The right bottom surface 31 of FIGS. 1 and 2 of the accommodation groove 31.
a is inclined with respect to the center axis of the locate pin 28. In the accommodation groove 31, a clamp member 32 provided with a clamp portion 32a for pressing against the panel material W with the surface of the receiving seat 23 is reciprocally movable along the bottom surface 31a.

A cylinder 33 for driving the clamp member 32 is attached to the vertically moving plate 26, and a rod 34 of the cylinder 33 is connected to the clamp member 32. Accordingly, when the vertically moving plate 26 moves, the clamp member 3 is integrally formed with the vertically moving plate 26 via the rod 34.
2 also moves up and down.
8 does not change. And cylinder 3
When the clamp member 32 is moved with respect to the locate pin 28 by driving the locate pin 28, the locate pin 2 of the clamp portion 32a is moved.
8, the position of the third fitting portion 2 as shown in FIG.
8C, the position of the second fitting portion 28b as shown in FIG. 5, and the position of the first fitting portion 28a as shown in FIG. At each position, clamp part 3
The lower surface of 2a crosses the outer peripheral surface of each fitting part.

[0010] The panel material W using the clamp device described above is used.
Next, a procedure for clamping is described. When the panel material W is carried into the stage where the clamp device is installed,
The cylinder 24 operates in accordance with the type, and the vertically movable plate 26 is set at a predetermined position in the vertical direction. Under this state, the clamp member 32 has moved to the position of the ascending limit with respect to the locate pin 28 as shown by a virtual line. Thereby, the clamp portion 32 of the clamp member 32
a will be completely hidden in the locate pin 28.
In this state, the locating pin 28 enters into the positioning hole formed in the panel material W. FIG. 1 shows a state in which a positioning hole having a diameter corresponding to the outer diameter of the third fitting portion 28c is fitted, and FIG. 5 shows a state in which a positioning hole having a diameter corresponding to the outer diameter of the second fitting portion 28b is fitted. FIG. 6 shows a state in which a positioning hole having a diameter corresponding to the first fitting portion 28a is fitted. By driving the cylinder 33 in this state, the clamp member 3
When the 2 is retracted, the clamp portion 32 a is protruded from the accommodation groove 31, and locks the panel material W with the panel receiving seat 23. Therefore, according to the illustrated clamp device, the panel material W corresponding to the three types of positioning holes having different outer diameters can be positioned and fixed.

FIG. 7 is a view showing a clamping device according to another embodiment of the present invention. The outer peripheral surface of the locating pin 28 is entirely conical, and the entire conical surface has a plurality of fitting portions. It has become. In this case, the vertically moving plate 2
6 to move the locate pin 2
8, the outer diameter of the portion that fits into the positioning hole of the panel material W, that is, the outer diameter of the fitting portion can be changed.

[0012]

As described above, according to the present invention, a plurality of fitting portions respectively fitted to one locating pin and each positioning hole formed in a plurality of types of panel materials are provided. another by different outer diameters formed integrally, by moving the locating pin in the axial direction together with positioning a plurality of kinds of panels, pairs clamp member in the axial direction of the locating pin
By moving the panel material obliquely and linearly, the panel material can be fastened in cooperation with the receiving seat. As a result, a plurality of types of panel materials having different inner diameters of the positioning holes can be compactly formed by one clamping device. And it can be easily positioned and fixed.

[Brief description of the drawings]

FIG. 1 is a front view showing a clamp device according to one embodiment of the present invention,

FIG. 2 is a plan view of FIG. 1,

FIG. 3 is a right side view of FIG. 1,

FIG. 4 is a sectional view taken along line 4-4 in FIG. 2;

FIG. 5 is a front view showing a state in which another panel material having an inner diameter different from that of the panel material shown in FIG. 1 is positioned and fixed;

FIG. 6 is a front view showing a state in which another panel material having an inner diameter different from that of the panel material shown in FIGS. 1 and 5 is positioned and fixed;

FIG. 7 is a front view showing a main part of a clamp device according to another embodiment of the present invention,

FIG. 8 is a sectional view showing a conventional clamping device.

[Explanation of symbols]

21: substrate (supporting member), 23: receiving stand (receiving seat), 2
4 ... Cylinder (locating pin driving means), 26 ... Vertical moving plate, 28 ... Locating pin, 33 ... Cylinder (clamp member driving means, W: panel material.

Claims (1)

(57) [Claims] 1. A locating pin fitted into a positioning hole formed in the panel material is provided adjacent to a receiving seat attached to a support member and supporting the panel material, and the locating pin is driven to be able to move forward and backward in the axial direction. Install the locating pin driving means to said support member, integrally formed with a plurality of fitting portions respectively corresponding to the positioning holes formed in the plurality of types of said panel member on the outer peripheral surface of the locating pin, formed in the locating pin A clamp member is provided in the recessed accommodation groove so as to be movable forward and backward in a direction inclined with respect to the forward and backward movement direction of the locating pin, and the clamp member is linearly moved near the tip of the clamp member.
Is moved out of the accommodation groove by moving
To clamp the panel material with the receiving seat.
The locating pin driving means is connected to the locating pin driving means, and the locating pin driving means receives the predetermined outer diameter of the locating pin corresponding to a positioning hole of the panel. A clamp device that is located on a surface of a seat and that fastens a panel material by the receiving seat and the clamp member.