JPH032337Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a device for confirming the position of a material in a press die, and more particularly to a device for confirming the position of a supplied material by moving over a lower die.

(Prior Art) When punching or drilling holes in materials of different sizes using the same press mold, it is necessary to confirm that the materials are in a predetermined position on the lower mold of the press according to their size.

As a device for checking the position of the material when the material is being fed by moving over the lower mold of the press, a plurality of combinations of gauges and electric switches are arranged in series from the inside to the outside of the lower mold. be. With this device,
Each set of gauges and electric switch is removably installed in a recess provided in the lower mold, and when processing large materials, the inner gauge and electric switch are removed from the lower mold. The position of the material is confirmed by the action of the outer gauge and electric switch, and when processing small materials, the inner gauge and electric switch are attached to the predetermined positions of the lower mold, and the inner gauge and electric switch are connected to each other. The position of the material is confirmed through interaction with an electric switch.

(Problem that the invention aims to solve) By the way, the recesses provided in the lower die for the gauges and electric switches are just dead spaces for press working, so the holes that need to be made in large materials are If processing such as opening happens to have to be done in a part opposite to a recess that accommodates a gauge or electric switch located inside, processing becomes impossible, so a separate lower mold is provided. ,
There are defects such as restrictions on product processing. Since electric switches are relatively large, such problems are more likely to occur as the number of electric switches increases.

Furthermore, depending on the size of the material, when attaching and detaching the electric switch together with the gauge to the lower mold, it is necessary to change the electric wiring each time, which is complicated.

Therefore, the purpose of the present invention is to suppress the increase in the number of lower dies as much as possible, increase the degree of freedom in product processing, and to create a material position that does not require switching electrical wiring depending on the size of the material. The objective is to provide a verification device.

(Means for Solving the Problem) The present invention is a device that moves over the lower mold of a press to check the position of the supplied material, and is arranged in series from the inside to the outside of the lower mold. , at least two holders removably attached to the lower mold, a gauge slidably supported by each holder, and a spring biasing the gauge inwardly of the lower mold; The device includes a connecting rod disposed between adjacent gauges, and a switch disposed outside the outermost gauge that emits an electric signal when the gauge moves a predetermined amount.

(Function) When a large material is to be supplied, the holder and gauge inside the lower mold are removed from the lower mold, and if necessary, the connecting rod is removed before use. When the material reaches the outer gauge, the movement of this gauge activates an electric switch to confirm the location of the material.

If small materials are to be supplied, install the holder and gauge in place inside. When the material reaches the inner gauge and moves this gauge, this movement is transmitted through the connecting rod to the outer gauge, and the movement of the outer gauge activates an electric switch. .

(Example) Examples of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the material position confirmation device 10 is a device that moves on a lower die 12 of a press to confirm the position of a large material B or a small material C that is supplied. In the illustrated example, the material B and the material C are being fed while moving in the A direction. This device 10 includes two holders 14, 16, gauges 18, 20, springs 22, 24, and a connecting rod 26.
and a switch 28.

The lower die 12 is provided with various punching holes etc. according to the processing to be performed on the material B or the material C. In the illustrated example, the punching holes 30a and 3 to be performed on the material B are provided.
0b, . . . etc. are provided. The lower mold 12 further includes two recesses 3 arranged in series from the inside to the outside of the lower mold, that is, in the illustrated example, in the direction A.
2,34. The recess 32 on the inside of the lower mold has a substantially T-shaped planar shape, whereas the recess 34 on the outside has a rectangular planar shape.

The holder 14 integrally includes a guide part 36 arranged in the wide part of the recess 32 of the lower mold 12 and a holding part 37 extending outward from the guide part 36 and arranged in the narrow part of the recess 32. A hole 38 extending in the direction A is passed through the guide portion 36, and a hollow hole 39 is provided in the holding portion 37. Furthermore, holder 1
A hole 40 extending in the A direction is penetrated through the upwardly protruding end of the outside of the hole 4 . The holder 14 has a pin 42 projecting downward from the guide portion 36, and the pin 42 is inserted into the hole 44 of the lower mold 12, so that the holder 14 is fixed at a predetermined position with respect to the lower mold 12. . In this fixed position, the inner end surface 41 of the holder 14 functions as a stopper to hold the material C in a predetermined position.

The holder 16 has a guide portion 46 and a guide portion 46.
It integrally has a holding part 47 extending outward from the main body.
A hole 48 extending in the direction A passes through the guide portion 46, and a hollow hole 49 is provided in the holding portion 47. However, the holding part 47 has the same width as the guide part 46, and the upper surface 50 of the holding part 47 is formed flat. The holder 16 is connected to the lower mold 12 by the pin 52.
is fixed in place. In this fixed position, the inner end surface 51 of the holder 16 functions as a stopper to hold the material B in a predetermined position.

The gauge 18 is slidably inserted into the hole 38 of the holder 14, and the gauge 20 is slidably inserted into the hole 48 of the holder 16. Both gauges have the same shape and have abutment portions 19 that protrude upward and downward at their outer ends. When the abutting portion 19 hits the periphery of the hole end, the gauge is prevented from moving in the direction opposite to the A direction, that is, inwardly, and when the abutting portion 19 hits the periphery of the hole end, Each gauge is formed to have a length that projects inwardly from the holder. This protrusion length is
When the holder moves outward and its inner end is located on the same plane as the inner end surface of the holder, the switch is actuated via a mechanism to be described later. Each gauge is also formed at such a height that a portion thereof protrudes upward from the surface 13 of the lower mold 12 when it is attached to the lower mold 12 via a holder as shown in the figure. In the illustrated example, the inner end surface 17 of each gauge is inclined with respect to the A direction. Thereby, even when the material is fed in the D direction, the position of the material can be confirmed.

The spring 22 is disposed in the hollow hole 39 of the holder 14 and biases the gauge 18 in a direction opposite to the moving direction A of the material, that is, toward the inside of the lower die. Further, the spring 24 is disposed within the hollow hole 49 of the holder 16 and biases the gauge 20 inward.

A connecting rod 26 is located between the gauges 18,20. In the illustrated example, the connecting rod 26 is slidably inserted loosely into the hole 40 of the holder 14, with its inner end contacting the gauge 18 and its outer end contacting the gauge 18.
It is fitted into the hole 21 of the gauge 20 and fixed to the gauge 20.

The switch 28 is connected to the gauge 2 located outside the lower mold.
Attached to the holder 16 on the outside of the gauge 2
When 0 moves a predetermined amount, it emits an electric signal. This switch can be a limit switch or a proximity switch.

(Operation of the embodiment) When a small material C is supplied to the lower mold 12, the inner holder 14 and the gauge 18 are attached to the lower mold 12 as shown in the figure. When the material C moves in the direction A on the lower die 12, the material C moves into the holder 14.
The end face 17 of the gauge 18 protruding inwardly from the outer wall contacts the end face 17 of the gauge 18, which pushes the gauge 18 outward.
0 and pushes the gauge 20 outward. When the material C moves further and comes into contact with the end surface 41 of the holder 14, the material C reaches a predetermined position and stops moving. At this time, the gauge 18 is completely pushed out, and the gauge 20 pushed outward via the connecting rod 26 activates the switch 28 to generate an electric signal. Thereby, it can be confirmed that the material C is in the predetermined position.

When a large material B is supplied onto the lower die 12,
Remove the inner holder 14, gauge 18, spring 22, etc. from the lower mold 12. Then, the material B moving in the direction A comes into contact with the end surface 17 of the gauge 20 protruding inward from the outer holder 16, and pushes the gauge 20 outward. When the material B comes into contact with the end surface 51 of the holder 16, the material B is at a predetermined position and stops moving. At this time, the gauge is 20
The switch 28 is actuated to generate an electrical signal. Thereby, it can be confirmed that the material B is in the predetermined position.

(Another Example) In the above example, two molds are arranged in series from the inside to the outside of the lower mold of the holder. Alternatively, three or more holders can be arranged in series and a gauge can be placed in each holder, in which case the switch is placed outside the gauge at the outermost side of the lower mold.

Further, the material can also be supplied in a direction other than the A direction, for example, in the D direction.

(Effects of the invention) According to the invention, since the switch is placed only on the outside of the outermost gauge, the recess for the switch in the lower die of the press can be reduced, and it is possible to process large materials. The scope of processing such as drilling holes can be expanded. That is, in the past, a switch was placed in relation to each gauge, so recesses for the inner gauges and switches were provided in the lower mold, as shown by the imaginary lines in Figure 1. When this recess happened to coincide with the position of a hole in a large material, machining was impossible, resulting in problems such as having to prepare a separate lower die. On the other hand, in this invention, the large material B has 30c, 30d, 30
It is possible to make holes such as e. As a result, it is possible to suppress an increase in the number of lower dies.

Furthermore, depending on the size of the material, there is no need to attach or detach the switch to the lower mold, so there is no need to change the electrical wiring each time, and costs can be reduced by reducing the number of electrical switches.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing essential parts of a material position confirmation device according to the present invention, and FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. 10...Material position confirmation device, 12...Lower mold, 1
4, 16...Holder, 18,20...Gauge, 2
2, 24... Spring, 26... Connecting rod, 28... Switch, 32, 34... Recess.

Claims (1)

[Scope of utility model registration request] At least two devices that move over the lower die of the press to confirm the position of the supplied material, and are arranged in series from the inside to the outside of the lower die and are detachably attached to the lower die. holder and
a gauge slidably supported by each holder; a spring biasing the gauge inward of the lower mold; and a connecting rod disposed between adjacent gauges;
arranged outside the outermost gauge,
A material position confirmation device in a press mold, including a switch that emits an electric signal when the gauge moves a predetermined amount.