JPH0230342A - Positioning device for progressive feeding hoop - Google Patents

Abstract

PURPOSE:To position without biting into the hoop by providing an auxiliary pin and a pilot pin forming a hole to slide the auxiliary pin and slitted in the direction authogonal to the feeding direction of the hoop on a pilot member. CONSTITUTION:As the master die 10 is descended, a stripper 15 and the pilot pin 19 are descended. Hereupon, the lower end of the pilot pin 19 is inserted into the pilot hole 21a of the hoop 21. In this case, when the pilot hole 21a is not on the prescribed position due to the generation of a pitch error, the lower end of the pilot pin 19 is inserted while bending around the periphery of the pilot hole 21a to position temporarily. By this method, it becomes not to be apprehended that the pilot pin 19 bites into the periphery of the pilot hole 21a, the back-lash between the pin 19 and the pilot hole 21a is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a progressive hoop material positioning device that can position and process metal hoop materials at predetermined positions while sequentially transporting the hoop materials.

[Conventional technology]

This type of progressive hoop material positioning device is shown in FIG. FIG. 3 is a vertical sectional view showing the main parts of a conventional progressive molding die. In FIG. 3, 1 is an upper mold master, and this upper mold master 1 is mounted on the movable side of the press machine. A lower master 2 is mounted on the fixed side of the press machine so as to face the upper master 1.

On this lower mold master 2 side, there is a gui plate 3.

The hoop material 4 is arranged at both ends of this die plate 3.
It has guide plates 5 and 6 that guide both end edges of the plate.

Further, a punch plate 7 is attached to the upper die master 1 side, and a through hole 8 is formed in the punch plate 7, and a pilot member 9 is fitted into the punch plate 7.

The upper end of this pilot member 9 is fixed to the upper mold master IK, and the lower end of the pilot member 9 is formed into a tapered shape and is bored from the lower surface of the busy punch plate 7.

In such a progressive mold, while the hoop material 4 is fed in a certain direction, the pilot member 9 is inserted into the pilot hole 4a of the hoop material 4, and the hoop material 4 is positioned at a predetermined position by a button. It is now used for processing such as cutting and bending.

[Problem to be solved by the invention]

By the way, in the prior art, the fixed type pilot member 9 is inserted into the pilot hole 4 a Ic of the hoop material 4, so if the hoop material 4 is a thin material or an insert part, the pitch error of the pilot hole 4a due to thermal change will occur. If this occurs, there is a risk that the pilot member 9 will bite off the periphery of the pilot hole 4a of the hoop material 4 during one positioning operation.

Due to this busy work, looseness occurred between the pilot member 9 and the pilot hole 4a, which deteriorated the positional accuracy of the pilot hole 4, lowered the processing accuracy, and increased the defective rate.

Further, in order to solve this problem, it is conceivable to elongate the tip shape of the pilot member 9, for example, to make it into a bullet shape, but in this case, the movement stroke of the pilot pin 9 becomes long.

The moving time of the pilot member 9 is long tl, 7-”f
It was not possible to follow the transport speed of material 4, and there was a limit to the range of application.

The present invention has been made in view of the above-mentioned problems of the prior art and to solve the problems, and its purpose is to provide a positioning device for progressive hoop material that can be positioned without biting into the hoop material.

[Means to solve the problem]

In order to achieve the above object, one aspect of the present invention includes an upper mold master;
It is equipped with a lower mold master disposed opposite to the upper mold master, and a pilot member that is moved toward the lower mold master by the operation of the upper mold master, and forms pilot holes at a predetermined pitch to form a T-hoop material. In the progressive hoop material positioning device, the pilot member is placed between the upper die master and the lower die master and is positioned by inserting the pilot member into the pilot hole while feeding the pilot member in a certain direction, and the pilot member includes an auxiliary pin and the auxiliary pin. The pilot pin has a hole through which the hoop material is slid, and a pilot pin having at least a slit in a direction perpendicular to the feeding direction of the hoop material.

[Effect]

This is because the present invention is configured as described above.

Since the pilot pin can flex in the hoop material feed direction, even if the pilot hole is misaligned, the pilot pin will flex and be inserted into the pilot pin, and the auxiliary pin inside the pilot pin will inserted in the direction. This prevents the pilot pin from digging into the periphery of the pilot hole, and when positioning the pilot pin by inserting the auxiliary pin in the direction of the pilot pin to increase the rigidity of the pilot pin, the auxiliary pin and the pilot hole slide directly. Since they do not touch each other, the pilot hole will not be galled even when the auxiliary pin is inserted.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 (al, (bl, (cl) is a cross-sectional view of a main part showing each step of the positioning operation in a progressive molding die to which the progressive hoop material positioning device according to the present invention is applied, and FIG. 2 (a) %
(bl is a vertical cross-sectional view and a bottom view of the pilot pin.

In this example, as a mold.

For example, 5 molding dies are listed for bending and forming hoop materials.

In these figures, reference numeral 10 denotes an upper mold master attached to a ram (not shown) on the movable side of the press machine via a fastening means, and 11 denotes an upper mold master (not shown) on the fixed side of the press machine opposite to this upper mold master 10. This is a lower mold master that is attached to a bed that does not have a base plate through a fastening means.

A die plate 12 is attached to the lower mold master 11 side, and a reference pin (not shown) fixed to the lower mold master 11 is inserted into a hole formed at a corresponding position on the side end of this die plate 12. That is, the die plate 12 is positioned with respect to the lower mold master 11 by this reference pin. This die plate 12 is provided with an escape hole 13 for a pie hit member, which will be described later. Further, although not shown in the drawings, the die plate 12 is provided with a bending punch, a knockout, a knockout pin, etc. in accordance with the shape of the part.

Further, on the upper mold raster 11 side, a support plate 14 and a stripper 5 are supported so as to be movable toward and away from the upper mold master 11. A through hole 16 is bored in this stripper 15 at a position corresponding to the escape hole 13, and a VC pilot member 17 is provided in this through hole 16. The pilot member 17 consists of an auxiliary pin 18 and a pilot pin 19 into which the auxiliary pins 18 are slidably inserted. This auxiliary pin 18 includes a flange-shaped stopper N18a, a shaft portion 18b with an IC protruding from the upper and lower surfaces of this stopper portion 18a,
The shaft portion 18b is inserted into a through hole 14a bored in the plate 14.

On the other hand, the shaft portion 18c is slidably inserted into a round hole 19a formed in the pilot pin 19. Further, a flange-shaped stopper 19b extends from the upper end of the pilot pin 19, and this stopper 19b and a stopper portion 18a of the auxiliary pin 18 are accommodated in the upper large diameter portion 16a of the through hole 16 of the stopper 15. . Due to this.

A stopper portion 18a of the auxiliary pin 18 abuts against the lower surface of the plate 14, and a stopper portion 18b of the pilot pin 19 abuts against the bottom surface of the large diameter portion 16a of the through hole 20 to prevent removal. Moreover, these stopper parts 18a, 19bls
JIK is equipped with a coil spring 20 and has an auxiliary pin I.
8 is urged upward, and the pilot pin 19 is urged downward. The lower end of the pilot pin 19 is a stopper 15
It protrudes from the lower end of the pilot pin 19.
A direction substantially perpendicular to the feeding direction of the hoop material 21 at the lower end of the hoop material 21;
Slits 22a and 22b are formed in the same direction as the feeding direction, that is, in a cross shape.

Incidentally, reference numeral 23 is a recessed portion for escape of the hoop material 21 formed on the lower surface of the stripper 15.

Next, the positioning operation of the embodiment configured as described above will be explained.

In the state shown in FIG. 1A, the auxiliary pin 18 is in the upper position due to the urging force of the coil spring 20, and the lower end of the auxiliary pin 18 does not reach the lower part of the round hole 19a of the pilot pin 19. Therefore, the pilot pin 19 is
Due to the action of 22a and 22b, it can be bent in the plane direction.

When the upper mold master 10 is lowered from the state shown in FIG. 1al, the stripper 15 and the hyperilot pin 19 are lowered in accordance with this lowering. Then, the lower end of the pilot pin 18 is inserted into the pilot hole 21alc of the hoop material 21. At this time, if an error occurs in the pitch and the pilot hole 21a is not in the predetermined position, the lower end of the pilot pin 18 is inserted while being bent along the periphery of the pilot hole 21a, and the hoop material 21 is inserted as shown in FIG. Temporary positioning is performed as shown in (b).

When the upper die master 10 further descends from the state shown in FIG. Then, the auxiliary pin 18 is lowered. This lowering causes the shaft portion 18c of the auxiliary pin 18 to slide within the round hole 19a of the pilot pin 19, and the lower end of the shaft portion 18c reaches the bottom surface of the round hole 19a. Then, Surin) 22a.

Pilot pin 19 was bent so as to narrow 22b.
The lower part of the auxiliary pin 18 is pushed back outward by the lowered shaft portion 18cK of the auxiliary pin 18. As a result, the lower part of the pilot pin 19 that has been pushed back pushes the peripheral surface of the pilot hole 21a and moves through the pilot hole 21a, completing the positioning as shown in FIG. 1 (cl).

Furthermore, when the upper mold master 10 is raised from the state shown in FIG. Return to the state shown in figure (a).

In the embodiment configured in this way, the pilot member 17 forms the auxiliary pin 18 and the round hole 19a into which the auxiliary pin 18 slides, and also extends in a direction substantially perpendicular to the feeding direction of the hoop material 21. Since the pilot pin 19 has a slit 22a formed therein, the pilot pin 19
can be bent in the feeding direction of the hoop material 21, and even if there is a positional deviation in the pilot hole 21a due to a pitch error, the pilot pin 19 is inserted into the pilot hole 21a while being bent, so that the pilot pin 19 is inserted into the pilot hole 21a. hole 21
There is no risk of it biting into the periphery of a. As a result, there will be no looseness between the pilot pin 19 and the pilot hole 21a, and processes such as machining can be performed reliably. Also, the round hole 19 of the pilot pin 19
Since the auxiliary pin 18 is lowered after being temporarily fixed in the hole a, the auxiliary pin 18 does not come into direct contact with the periphery of the pilot hole 21a, and even when the auxiliary pin 18 is lowered for final positioning, there is no contact with the pilot hole 21a. Biting can be prevented. Furthermore, when transitioning from the state shown in FIG. 1(c) to the state shown in FIG. As a result, the fitted state between the pilot pin 19 and the pilot hole 21a becomes loose, and the pilot pin 19 is removed from the pilot hole 21a.
The stripper comes off, and there is no need for a guide plate as a stripper as in the past, and the number of parts is v1.1. ), f
cl is a sectional view of a main part showing each step of positioning operation in a progressive molding die to which the progressive hoop material positioning device according to the present invention is applied, FIG. 2 (al,
(b) is a vertical cross-sectional view and a bottom view of the pilot pin, and FIG. 3 is a vertical cross-sectional view showing the main parts of a conventional molding die.
...Upper mold master, 11...Lower mold master, 1
7... Pilot member, 18... Auxiliary pin, 19... Pilot pin, 20...
... Coil spring, 21 ... Hoop material, 2
1a...Pilot hole, 22a, 22b
······slit.

For example, it can be applied to guard blocks, etc., and it can also be applied to positioning devices other than molding molds, such as plating devices, insert devices, etc.

[Brief explanation of the drawing]

Figure 1 (0) Figure I (C)

Claims (1)

[Claims] The method includes an upper mold master, a lower mold master disposed opposite to the upper mold master, and a pilot member that is moved toward the lower mold master by the operation of the upper mold master, and forms pilot holes at a predetermined pitch. In the progressive hoop material positioning device, the pilot member is inserted into the pilot hole and positioned while the hoop material is placed between the upper die master and the lower die master and fed in a certain direction, the pilot member is an auxiliary pin. A progressive hoop material positioning device comprising: a pilot pin having a hole through which the auxiliary pin slides and a slit formed at least in a direction substantially perpendicular to the feeding direction of the hoop material.