JPS6257506A - Apparatus for automatically processing closed curve of processed article - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically processing a workpiece along its closed curve.

Traditionally, for example, one of the steps in the shoe manufacturing process was to put a mold inside, wrap leather around the periphery of the shoe sole, cut out the part that protruded from the periphery of the shoe with a cutter, and then use a grinder. The periphery of the sole is chamfered diagonally, and the bottom is finished with a puff.

During these operations, the shoe, which has a wooden or plastic mold inside, is held close to a canter or grinder, and the shoe is rotated by hand, but this process is tedious and tedious. Not only that, but if you carry relatively heavy shoes with wooden lasts inside them for a long time, they will become extremely heavy, which has the disadvantage of gradually decreasing your work efficiency.

The object of the invention is to eliminate the above-mentioned drawbacks and to provide a device for automatically machining a workpiece along its closure curve.

To achieve the above object, the invention provides a table on which the workpiece is fixed, and an outer circumference of the hoop supporting this table and corresponding approximately to the hoop of the closed curve to be machined of the workpiece. a ring having teeth, a support base for movably supporting the ring, a rotatable drive gear meshing with the teeth of the ring, and abutting against the inner periphery of the ring in opposition to the drive gear. a drive gear and a ring at the closing curve of the workpiece fixed so as to have a closing curve to be machined at a position on the table corresponding to the outer periphery of the ring; The processed member may be provided at a position corresponding to the meshing position with the teeth.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention for processing the periphery of a shoe sole will be described with reference to the drawings.

In FIGS. 1 and 2, a shoe whose sole periphery having a closed curve is to be processed is fixed on a roughly oval table 1 as will be described later.

A ring 3 is fixed to the bottom of the table 1, as shown in FIG. 2, and has a ring 3 having an outer circumference that approximately corresponds to the ring around the periphery of a shoe sole, and teeth 4 are formed on the outer periphery of the ring 8. A drive gear 9 fixed to one end of a shaft 8 rotatably supported by a plurality of pole units 5 (a third member 7) with a ring 3 attached to its lower surface is engaged with the other end of the shaft 8. A chain wheel 10 is fixed to the ring 3, and is connected to a motor via a chain (not shown).The transmission means is not limited to chain transmission, but may be gear transmission or similar means.Inside the ring 3, A press roller 11 is rotatably supported by a shaft 12 fixed to a support base 6 at a position facing the drive gear 9 and abutting the inner periphery of the ring 3 .

The operation of the apparatus of the present invention configured as above will be explained.

Place the positioning pin 13 (Fig. 2) on the table 1 on the shoe 2
The shoe is inserted with the sole upward into a hole 15 made in a wooden last 14, which is a container, and at the same time, the upper part of the shoe is placed on the upper receiver 16 of the table 1.

The piston rod 18 of the upper piston-cylinder assembly 17 is then lowered to press against the sole. Then, in order to cut the protruding portion 2a of the leather wrapped around the circumference of the shoe sole, the cutter 19 and the longitudinal guide roller 20 that moves together with the cutter 19 are moved toward the circumferential edge of the shoe sole so that the guide roller 20 comes into contact with the circumferential edge of the shoe sole. Bring them close until they touch and stop. Guide roller 20
The cutter 19 is elastically supported by a spring in the longitudinal direction toward the periphery of the sole and in the vertical direction. Further, in order to guide the cutter 19 in the vertical direction according to the changing height of the periphery of the shoe sole, a vertical guide roller 21 is positioned close to the cutter 19 and is biased downwardly by a spring so as to move the cutter 19 upwardly and downwardly. It's listed on. This vertical guide roller 21 is also mounted so as to move together with the cutter 19. Of course, the positions of the cutter 19 and the guide rollers 20 and 21 must be determined to correspond to the meshing position of the driving gear 9 and the teeth 4 of the ring 3. Then, the motor is started to rotate the drive gear 9 to rotate the ring 8, and the cutter 19 cuts off the sole protrusion 2a at a constant processing speed. Even if the position of the periphery of the sole passing through the cutter 19 changes slightly, it can follow the movement of the periphery of the sole because the cutter 19 and roller 20 are elastically supported in the front-rear direction.

Then, while the ring 3 is further rotated, the peripheral edge of the cut sole is chamfered by a grinder 22 (FIG. 2). Finally, apply a puff finish to the sole of the shoe.

In this embodiment, the present invention has been described only with regard to machining the periphery of the sole of a shoe, but if the outer periphery of the ring 3 is made to match the closed curve of the workpiece to be machined, it is possible to process the closed curve of various workpieces. be.

In the present invention, a ring having teeth on the outer periphery of the hoop that corresponds approximately to the hoop of the closed curve to be machined on the workpiece is movably mounted on the support stand, and a drive gear that meshes with the teeth of the ring is mounted on the support stand. A pressing roller is rotatably supported on a support base at a position facing the driving gear and abutting against the inner periphery of the ring, and has a closing curve to be processed at a position on the table corresponding to the outer periphery of the ring. Since the workpiece is provided at a position corresponding to the meshing position of the drive gear and the ring teeth in the closing curve of the workpiece fixed at It can be processed into Even if the machining position of the closing curve changes slightly with respect to the outer circumference of the ring, if the workpiece is configured so that it can follow the change in the position of the closing curve of the workpiece, as in the example, the workpiece can be machined without any problem. can automatically process closed curves. Therefore, the working efficiency of machining along the closure curve of the workpiece is significantly increased compared to conventional manual work.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of an embodiment in which the device according to the present invention is applied to processing the peripheral edge of a shoe sole forming a closing curve, and Fig. 2 is a perspective view of an embodiment of the device of the present invention with a portion cut away. , FIG. 3 is a sectional view taken along the line ■--■ in FIG.

Claims (1)

[Claims] (1) a table to which the workpiece is fixed; a ring supporting the table and having teeth on the outer periphery of the hoop that approximately corresponds to the hoop of the closed curve to be machined on the workpiece;
A support base for movably supporting the ring, a rotatable drive gear meshing with the teeth of the ring, and a support base rotated to a position facing the drive gear and abutting the inner periphery of the ring. consisting of a presser roller supported in a
The workpiece is fixed at a position on the table corresponding to the outer periphery of the ring so as to have a closing curve to be machined, and a workpiece is provided at a position corresponding to the meshing position of the driving gear and the teeth of the ring in the closing curve of the workpiece. An automatic processing device for closed curves of workpieces, characterized by: