JPS6331867Y2 - - Google Patents

Description

[Detailed description of the invention] As shown in Figs. 1 and 2, the present invention supplies circular dish-shaped parts having a downward protrusion and a hole in the center, arranged in a fixed position. This relates to a positioning device for processing or processing.

Conventionally, the alignment and positioning of a circular dish-shaped part B' having a protruding part A' that protrudes downward by a length l' from the bottom surface of the part as shown in Fig. 2 has been done manually by an operator using a positioning jig. For example, as shown in FIG. This was done by guiding the parts to a predetermined position and aligning and positioning them. However, when aligning and positioning a component whose protruding portion A is shorter than the bottom surface of a circular dish-shaped component B by a length l as shown in FIG. 1, there is no means for positioning the component.
The only way to do this is by manually attaching and positioning the parts directly to a jig, which requires a long time and low work efficiency as each part is processed one by one.

In view of the above, the purpose of the present invention is to provide an index table, a pinion gear attached to a fixed shaft fixed to the index table, an internal gear installed around the index table, and a stopper rail fixed to the internal gear. Due to the simple mechanism used,
It is an object of the present invention to provide a device that consistently aligns and positions protrusions of parts in a reliable and short time.

The present invention will be explained in detail below using an embodiment of the device. FIG. 4 is a plan view of the device of the present invention, and FIG. 5 is a cross-sectional view taken from FIG. 4. In the figure, fixed shafts 12 are provided upright on an index table 11 in the number of index tables, and their flange portions 13 are fixed to the index table 11 with bolts 14. A pinion gear 17 is attached to the shaft portion 15 of the fixed shaft 12 via a bearing 16, and the pinion gear 17 is attached to the fixed shaft 12 so as to be freely rotatable. Reference numeral 18 denotes a product holder fixed on the pinion gear 17 with a bolt 19. The shaft portion 15 of the fixed shaft 12 is loosely fitted into the center of the product holder 18, and the upper end of the shaft portion 15 has a tapered head. The guide bolt 20 which has become worn out is screwed in, and the product holder 18 is secured to the shaft portion 15 via the presser plate 21 so as not to fall off. Note that the taper of the head of the guide bolt 20 is
The guide bolt 20 serves as a guide to easily insert the part B placed on the product holder 18 into the central hole, and the guide bolt 20 is a positioning pin that allows the part B to rotate and prevents it from moving in the horizontal direction. Also serves as the role of
On the other hand, a guide 24 fixed with bolts 23 on a frame 22 installed around the index table 11 has an internal gear 25 cut therein, which is centered on the rotation axis of the index table 11 and meshes with the pinion gear 17. do. Further, the upper end of the guide 24 is positioned slightly below the lower surface of the component B including the protrusion A when placed on the product holder 18,
A stopper rail 26 is also formed on the inner surface of the protrusion A. In addition, in FIG. 4, 27 indicates a component loading position, and when the component B is placed on the product holder 18 at the position of the protrusion A indiscriminately by a loading device (not shown), the protrusion Since the position of part A is not regulated, a cut groove 28 is formed to prevent the protrusion A from coming into contact with the stopper rail 26, and 29 is a part where the protrusion A of part B needs to be finally positioned. Indicates processing position or discharge position.

The present invention has the above-mentioned structure, and at the component loading position 27 shown in FIG. The part B is placed on the product holder 18 while being guided through the center hole by the guide bolt 20. From this state, as the index table 11 performs index rotation in the direction of arrow A, for example, the index table 1
A pinion gear 17 rotatably attached to the shaft portion 15 of the fixed shaft 12 provided in the frame 22 meshes with an internal gear 25 cut into a guide 24 fixed to the frame 22 and rotates in the direction of arrow B. , rotates around the shaft portion 15 of the fixed shaft 12. For this reason, the product holder 18 fixed to the pinion gear 17
At the same time, the fixed shaft 12 rotates in the direction of arrow B about the shaft portion 15, and the part B placed on the product holder 18 also rotates about the head of the guide bolt 20 at the upper end of the shaft portion 15. . Due to this rotation, the protrusion A of the component B placed at an arbitrary position at the component loading position 27 will eventually come into contact with the guide rail 26, and after the protrusion A has come into contact with the guide rail 26, the index Even if the pinion gear 17 rotates due to the rotation of the table 11, slipping occurs between the part B and the product holder 18, and the part B is no longer centered around the guide bolt 20 with the protrusion A in contact with the guide rail 26. It does not rotate. Therefore, from now on, as the index table 11 rotates, the protrusion A slides along the guide rail 26 and is guided to the part processing position 29, where the part B is processed.
can align the positions of the protrusions at certain positions. Note that if the number of teeth of the pinion gear 17 and the internal gear 25 is set so that the pinion gear 17 rotates one rotation or more during index rotation of the index table 11 from the component loading position 27 to the component processing position 29, Regardless of the position of the protrusion A of the component B at the component loading position 27, all the protrusions can be aligned at a constant position at the component processing position 29.

As described above, the present invention automatically maintains the position of the protrusion of the part by simply placing part B on the product holder at the component loading position, regardless of the position of the protrusion. can be aligned and positioned, and the positioning accuracy is high.
In addition, because of its simple mechanism, it can be applied as a positioning device for automatic assembly machines, press machines, etc., and has higher work efficiency than the conventional method of processing one by one, and has the effect of being used in a wide variety of ways. It is.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the shape of a part targeted by the present invention, Fig. 2 is an explanatory diagram of the shape of a part that can be conventionally positioned, and Fig. 3 is an explanatory diagram of the conventional method. FIG. 4 is a plan view of an embodiment of the device of the present invention, and FIG. 5 is a cross-sectional view of FIG. 4. 11... Index table, 12... Fixed shaft, 15... Shaft portion, 17... Pinion gear, 18
...Product pedestal, 20...Guide bolt, 25...
Internal gear, 26...stopper rail.

Claims (1)

[Scope of utility model registration request] A positioning device for a circular dish-shaped component having a downward protrusion and a hole in the center, which includes an index table that performs rotational indexing, and a position at a component loading position and a component positioning position when indexing the index table. A fixed shaft fixed on an index table configured as shown in FIG. a guide bolt that fits into the center hole of the part;
An internal gear that meshes with the pinion gear and is located around the index table's axial center, and a stopper rail that is fixed to the internal gear and is centered on the index table's axial center that can come into contact with the protruding parts of the parts. and a cut groove provided in the stopper rail at the component loading position of the index table.