JPS5922890Y2 - press drilling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press drilling device that uses a punch and a die to punch a hole in the opening edge of a plate material having an opening in the middle.

BACKGROUND ART Conventionally, when drilling a hole in a plate material using a press, a drilling device is generally employed in which a die is attached upward to a base on which the plate material is placed, and a punch is lowered by a ram.

However, if the plate material has a rising part extending toward the ram around this hole-drilling part, when placing the plate material on the base by cross-feeding, etc., it is necessary to It is necessary to position the punch above the height of the rising part, and even if a stroke of about 5 mm is sufficient for drilling, the ram must be stroked extra so that the punch is positioned above the height of the rising part. In addition, the amount of air required to stroke the ram increases, and the protruding length of the punch needs to be increased to avoid interference between the ram and the rising part during drilling, which results in an increase in the size of the drilling device.

Additionally, a plurality of guide posts are erected around the base of the drilling device to guide the descent of the ram, but if the plate material is large, the plate material will interfere with the guide posts when replacing the plate material. There was a problem in that it was necessary to widen the interval between the guide posts, making the drilling device even larger and increasing the cost.

In view of this, the present invention provides three support parts, high, medium, and low, that support the plate material in an inclined state on the base, and while the die is installed horizontally on the support part in the middle part, with respect to this die,
The rotary arm with the punch cylinder attached is set up so that it can move up and down using the outer position of the low support part as a fulcrum between a horizontal working position where the punch and die face each other and a retracted position where the punch is retracted above the fulcrum. Furthermore, an attempt is made to provide a press drilling device in which a guide post is provided on the side of the high support part, which can be inserted into a positioning hole provided in the rotary arm through an opening in a plate material when the rotary arm is in a horizontal working position. It is something to do.

In other words, the purpose of the present invention is to miniaturize the press drilling device and improve the workability of pressurizing the hole. By rotating the punch to a horizontal working position and making the punch face the die, the punch stroke required for drilling a hole in a plate material can be shortened.The length of the rotating arm can be shortened by supporting the plate material at an angle. The positioning with respect to the die is performed by inserting the guide post provided on the high plate support side into the positioning hole of the rotating arm through the opening of the plate, and the guide post can be positioned close to the die without interfering with the plate. By making it possible to provide the device at any location, the object is a distant relative of the above object.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, 1 is a press hole punching device, 2 is a base, 3 is a punch unit, and 4 is a guide post. It is driven by the guide post I/cylinder 6 to drill holes in the plate material 7.

In this example, the plate material 7 is an automobile rear fender shown in FIG. 2, and a hole is made in the molding attachment part 8 of the window frame.

The base 2 has a high central portion 10, and the die 12 is oriented horizontally, that is, toward the punch unit side, on a plate support portion 11 that supports the opening edge (molding attachment portion 8) of the plate 7 above the central portion 10. A through hole 13 is provided at the upper end of the central portion 10 to allow the guide post I-4 to pass therethrough.

A plate support part 14 lower than the plate support part 11 and a plate support part 15 higher than the plate support part 11 are provided on both sides of the central part 10, and a plate support part 15 having a window opening in the middle part is provided. can be supported in an inclined state by these plate support parts 11, 14, and 15.

The punch unit 3 has a punch cylinder 17 with a punch 27 attached to an arm 16, and the arm 16 is pivoted on a support part 18 that projects upward from the base 2 at a position outside the low plate support part 14. The punch 27 and the die 12 face each other in a horizontal working position (indicated by a solid line in FIG. (indicated by a chain line) so that it can freely rotate in the vertical direction.

The arm 16 has a stopper 21 at its tip that fits into the upper end of the center part 10 of the base 2, and a fixing piece 22 is provided protruding downward from the stopper 21 on the proximal side. A positioning hole 23 into which is inserted is opened,
Further, a connecting portion 25 with the arm swing cylinder 5 is provided to protrude rearward from the pivot portion 24 at the base end.

The bunch cylinder 17 is provided below the arm 16 so that its axis is orthogonal to the axis of the pivoting part of the arm 16, and a punch 27 is attached to the tip of the piston rod 26.

The arm swing cylinder 5 is attached to the side surface of the base 2 in the vertical direction behind the punch unit 3.
The tip of the piston rod 28 is connected to the connecting portion 2 of the arm 16.
5 through a pin 29.

The guide post cylinder 6 is laterally attached to a mounting base 30 fixed to the base 2 on the opposite side of the punch unit 3 with respect to the center portion 10 of the base 2, that is, on the side of the high plate support portion 15, and faces the arm 16. A guide post (4) is attached to the tip of the piston rod 31.

In addition, in FIG. 1, 32 is the discharge port 33 when drilling the plate material 7.
Scrap box for receiving iron scraps discharged from
4 is a cushion rubber that alleviates the shock when drilling holes.
35 is an air booster that controls the operation of the punch cylinder 17.

In the above structure, the plate material 7 is moved in and out in the vertical direction, that is, placed on the base 2 and removed from the base 2, while the punch unit 3 is rotated upward to the retracted position.

When drilling holes, first the plate material 7 is attached to the plate material support part 11.1.
4.15 and supported in an inclined state, the punch unit 3 is rotated downward by the arm swing cylinder 5, and the stopper 21 is fitted to the upper end of the center part 10 of the base 2, and the punch unit 3 is placed in a horizontal working position.

Then, by activating the guide post cylinder 6 and fitting the guide post 4 into the positioning hole 23 of the arm 16 through the opening of the plate 7, the punch 27 and the die 1
2 is positioned, and the punch cylinder 17 is operated to punch a hole in the plate material 7.

Incidentally, in the above embodiment, the punch cylinder 17 is operated by the air booster 35, but it may be operated by a hydraulic booster.

In addition, a plurality of plate support parts are provided in the center part 10 of the base 2, and the die is attached horizontally to each plate support part, while
A structure may be adopted in which a plurality of punch units are provided so that the plate material 7 can be punched at a plurality of locations.

Therefore, according to the present invention, the plate material is supported in an inclined state, the die is placed sideways, and the rotating arm is configured to rotate between a horizontal working position and an upright retreat position. , by providing the guide post 1~ on the side of the plate material support part at a higher position and fitting it into the positioning hole of the rotating arm in the horizontal working position through the opening of the plate material.
It is possible to move the board in and out from the bottom direction, and the distance between the upper and lower support parts of the board, the length of the rotating arm, and the punch slot and loaf required for drilling can be shortened.
The guide post can be brought close to the die without interfering with the plate material, and since the punch is positioned relative to the fixed die, positioning is accurate, making press hole punching equipment more compact and improving the workability of hole punching. .

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a front view showing a press drilling device partially in section, and FIG. 2 shows the cut point of the plate material shown in cross section in FIG. 1 along line I-I. It is a front view of a plate material. 1...Press drilling device, 2...Base, 3...Punch unit, 4...
To guide post 1, 5... Am swing cylinder, 6
...Guide post l-cylinder, 7...
Plate material, 11.14.15... Plate material support part, 12
...Die, 13...Through hole, 16...
...Arm, 17...Punch cylinder, 2
3...Positioning hole, 26...Bunch cylinder screw I/rod, 27...Punch,
28... Screw I/rod of arm swing cylinder, 31... Piston rod of guide post cylinder.

Claims (1)

[Scope of utility model registration request] This is a press drilling device for drilling holes in the opening edge of a plate material having an opening in the middle part, and the machine is designed so that one side is high and the other side is low so that the plate material is supported in an inclined state on the base, and the middle part is A plate support part formed to support the opening edge of the plate material, and a die installed laterally at a position corresponding to the hole-drilled part of the plate material of the support part provided in the middle part of the plate support part. A rotary arm equipped with a punch cylinder equipped with a punch corresponding to the die is connected to the punch and the die using the outer position of the lower side support part of the plate support part as a fulcrum. The rotary arm is attached to the base so as to be rotatable in the vertical direction between a horizontal working position where the a guide post cylinder, which is provided with a drive means for moving the rotary arm, has a positioning hole in the rotary arm, and has a guide post that can be fitted into the positioning hole through the opening of the plate material when the rotary arm is in a horizontal working position. is attached to the base on the side of the high-shaped plate support part.