JPS62287947A - Positioning device - Google Patents

Abstract

PURPOSE:To enable plural kinds of works of different shape to be positioned, by providing plural positioning metal fixtures which form a positioning part in the upper end while an engaging part in the rear end part being swivelably pivotally mounted to a single pivotal shaft. CONSTITUTION:A positioning device, which moves a cylinder 5 in the axial direction, slides a connection metal fixture 3, connected with a piston rod 6 of the cylinder 5, on an engaging part 1b of a positioning metal fixture 1 to be engaged with its predetermined engaging part 1b. Hereafter, the device, which actuates the cylinder 5 to perform extension action, lifts the connection metal fixture 3 by the piston rod 6. And the device, which swivels the positioning metal fixture 1 to the front by lifting the enagaging part 1b of the positioning metal fixture 1 engaged with the connection metal fixture 3, performs positioning of a work by protruding positioning parts 1a. If the cylinder 5 is actuated performing contracting action, the positioning metal fixture 1 is swiveled being reset to the original position by lowering the connection metal fixture 3.

Description

Detailed description of the invention 3. Detailed description of the invention The present invention relates to a positioning device that positions a predetermined position according to a shape.

For example, in the production of automobiles, high-mix, medium- to low-volume production is carried out, in which multiple types of workpieces with different shapes are transferred to a fixed amount on one production line and processed in order to improve productivity. .

In the above production system, a plurality of types of workpieces are continuously conveyed on a line, the workpieces are stopped at a predetermined position by a positioning device, and processed and assembled by an automatic machine such as a robot. In this case, when the type of workpiece changes, the positioning position of the workpiece changes, so in the past, a large number of positioning devices were installed along the line to match all the positioning positions of the workpieces being transported, and The corresponding positioning device is selected and operated to stop the workpiece at a predetermined position on the line.

In addition, as a positioning device, conventionally, a device is used in which an appropriate positioning metal fitting is provided so as to be able to move forward and backward on the line, and the positioning metal fitting is connected via a correspondingly installed drive mechanism, such as a link to a piston rod of a cylinder. The selected cylinder is expanded and contracted, thereby operating the necessary positioning fittings to position the workpiece.

Conventional positioning devices combine one drive mechanism with two positioning fittings, resulting in a complicated and large structure. When installing a large number of devices on a line, a large installation space is required, and there are problems in that the line becomes longer and the number of parts increases, resulting in higher costs.

In order to use a plate, the present invention includes a positioning metal fitting having a positioning part formed at one end and an engaging part formed at the rear end, which is swingably mounted on a pivot.
Connecting fittings that engage with the engaging portions of the positioning fittings are mounted so as to be relatively movable in the axial direction along each engaging portion, and a piston rod of a cylinder is connected to the connecting fittings, and the positioning fittings or the cylinder are connected to each other. is moved by an appropriate driving means to move the positioning metal fitting and the connecting metal fitting relatively, so that the connecting metal fitting is engaged with the positioning metal fitting of the appointed official.

This invention arranges positioning fittings in correspondence with the positioning positions of a plurality of types of workpieces, and when positioning the workpieces, for example, moves the cylinder and the connecting fittings to engage the connecting fittings with the engaging portions of the positioning fittings corresponding to the workpieces. After that, the cylinder is operated to swing a predetermined positioning metal fitting using the connecting metal fitting to project it onto the line, thereby positioning the workpiece.

Figure 1 is a diagram showing an example of the basic structure of the positioning device according to the present invention. The rear part is an engaging part (1b), and an engaging protrusion (1c) is provided on the upper surface of the rear end of the engaging part (1b).
) is installed protrudingly. The positioning metal fittings (1) are provided in plural pieces [
In the drawing, 3 ([!) are arranged in parallel with appropriate distance apart, and the pivot (2) is passed through the corner to support it swingably and slidably. (3) is a connecting fitting, and the upper part is C-shaped. The engaging part (1b) and the engaging protrusion (1) of the positioning fitting (1) are formed on the front end surface.
1c) into which a protrusion (4) is formed. The connecting fitting (3) connects the recess (4) to the engaging portion (1) of the positioning fitting (1).
b) It is slidably attached from the side. (5) is a cylinder that moves the connecting fitting (1) up and down.
The upper end of the throat (6) is connected to the lower end of the connecting fitting (3). The cylinder (5) is supported by appropriate means so as to be movable along the axial direction of the pivot (2).

During operation, the cylinder (5) is moved in the axial direction, and the connecting fitting (3) connected to the piston rod (6) of the cylinder (5) is connected to the engaging part of the positioning fitting (1) (1)... (l
b) (lb)...Slide the top and move the connecting fitting (3) to the engagement part (1) of the positioning fitting (1).
b). After this, the cylinder (5) is extended and the piston rond (6) pushes up the connecting fitting (3), and the positioning fitting (1) engaged with the connecting fitting (3) is pushed up.
) by pushing up the engaging part (1b) of the positioning fitting (1).
The cylinder (5) is swung forward to project the positioning part (1a) to position the workpiece (see Figure 2).
When the is shortened, the connecting fitting (3) is lowered and the positioning fitting (1) is swung back to its original position.

Repeat the above operation to position the officer's positioning bracket (1)
Select and swing to position the workpiece.

When the positioning device is used in an automobile body production line, for example, as shown in FIG.
10) are installed at the front and rear so that the front and rear of the vehicle can be positioned, that is, four positioning devices are installed for one vehicle body (10).
) (1) are distributed and arranged at predetermined positioning positions of the vehicle body (10) according to the shape of the vehicle body (10) to be transported. When the car body (10) is transported on the production line (11), the connecting fitting (3) is attached to the engaging part (1b) of the positioning fitting (1) corresponding to the car body (10) in each positioning device.
Move the cylinder (5) so that it engages with the vehicle body (1).
0), the cylinder (5) is extended, and a predetermined positioning metal fitting (1) is swung to move the positioning part (
1a) is projected onto the production line (11), and the positioning portion (1a) presses and positions the vehicle body (], 0'').After this, the vehicle body (10) is processed, and after the processing is completed, The cylinder (5) is operated briefly, the positioning metal fitting (1) is returned to its swinging position, the vehicle body (10) is released, and the vehicle body (10) is transported on the production line (11).

The above operations are repeated to accurately position a plurality of types of vehicle bodies being transported.

When installing positioning devices in the front and back direction of the production line (11) as described above, if there is a certain relationship between the positioning fittings (1) (1) that operate in the front and rear positioning devices, for example, as shown in FIG. , the connecting fittings (3) (3) of the positioning device arranged in the front and back direction are connected and integrated,
The integrated connecting fitting (3) may be operated by one cylinder (5).

Incidentally, the number of positioning metal fittings (1) provided in the positioning device may be as long as the number of stages required depending on the type of workpieces to be conveyed in the commonly used production line. In addition, the shape of the positioning bracket (1) can be changed, and the positioning part (1b) of the positioning bracket (1) can also be changed to an appropriate shape according to the shape of the workpiece. Fix the positioning metal fitting (1) along the axis (2) to move it to any positioning metal fitting (1).
and the connecting fitting (3) may be engaged with each other. In this case, the positioning position 3 is always constant, so it is necessary to transport the work so that the positioning part of the workpiece is at a constant position.

Since this invention can operate multiple positioning metal fittings with a single drive source to correspond to multiple positioning positions, it is suitable for production lines that transport and process multiple types of workpieces with different shapes. When used, the positioning device is small and requires little installation space, making it possible to downsize the production line.In addition, the number of parts is small and costs are low.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part showing an example of the basic structure of a positioning device according to the present invention, FIG. 2 is a perspective view of a main part showing its operating state,
FIG. 3 is a perspective view of a main part showing an example of a positioning device used in a production line, and FIG. 4 is a perspective view of a main part showing another embodiment. (1) - Positioning bracket, (la) - Positioning part,
(lb) -Engagement part, (2)... Pivot, (3
)・Series fitting, (5) −・Cylinder. Patent applicant: Daihatsu Motor Co., Ltd.
4 illustrations jointly written by Rijin and Gangwon Province.

Claims (1)

[Claims] (1) A positioning part is formed at the upper end, an engaging part is formed at the rear end, and a plurality of positioning fittings are pivotally attached to one pivot shaft, and the engaging parts of the positioning fittings are engaged with each other. A connecting fitting supported so as to be relatively movable along the axial direction of a pivot, and a cylinder that moves the connecting fitting up and down at a predetermined position to swing an arbitrary positioning fitting. Characteristic positioning device.