JPS63220932A - Die moving piercing device - Google Patents

Abstract

PURPOSE:To lightly move a die and to reduce the die cost by pressurizing an upper die, punching by a punch and die with a die set floating device via a preceding pressing pin and providing the means to move the die set in rail direction by a driving device. CONSTITUTION:When a ram 1 is descended by feeding a work on a die, it pushes down an upper die 6 with compressing an urethane material, etc. 11. A preceding pressing pin 13 pushes down a rail holder 22 by abutting it to seat a lower die 7 on the supporting face 27 of the lower die base 4 by descending a die set floating device 3. With further descent of the upper die 6, a punch 8 makes a hole on a work by fitting into a die hole 14. With the actuation of a driving device 5, the die set 2 including the lower die 7 is moved with a linear bearing 23 on a rail 22 by the ascent of the die floating device 3. A die cost can thus be reduced and the movement of dies can lightly be performed.

Description

Detailed Description of the Invention (Field of Industrial Application) As shown in FIG. This invention relates to a device that separates parrots or parrots.

In the next turn shear, the thin steel plate W with holes punched in this way is cut along the cutting lines t1 and 1. The same trapezoid-shaped products Wl and W can be obtained by cutting the same trapezoid.

(Prior Art) The applicant of the present invention previously proposed an invention in Japanese Patent Application No. 110112/1983 as a device in which the holes are separated into right and left sides. In this method, two die holes are provided in the die, and the punch is moved laterally and used alternately.

(Problems to be Solved by the Invention) In the above-mentioned conventional device, the stroke S is small, and as shown in FIG. If the die holes are too close to each other, it will not be possible to make the die holes, and even if they are very close to each other, the middle part will become thin and the work cannot be done satisfactorily.

(Measures to Solve the Problem) The present invention allows holes to be drilled into left and right sides by moving a set of molds, and also allows easy movement of the molds. The method is to use a hole punching device that uses a punch and a die to make holes in a long sheet that is continuously fed to a press machine.The punch is fixed, and a guide pin is attached to a lower die to which a hypothetical die and a die are fixed. A mold set is constructed by inserting the mold set through the opening and interposing an opening spring, and a lower mold base located below the mold set is provided with a lower mold support surface and a mold set flotation device, and the mold set flotation device ftt-,
The upper surface is composed of a rail with a bearing, a rail holder that holds the rail, and a push-up spring that supports the mold set via these members, and the rail is attached to the upper mold when the upper mold is lowered. The present invention is characterized in that a leading holding pin that contacts the holder is provided, and a drive device that reciprocates the mold set in the direction of the rail is provided between the mold set and the lower mold base.

(Function) With the above configuration, when the upper mold is pressurized, the leading press pin of the upper mold pushes the rail holder and compresses the push-up spring. As a result, the height of the mold set flotation device is reduced, the lower mold is seated on the lower mold base, and as the upper mold continues to descend, the die and punch work together to punch a hole.

When the pressure on the upper mold is then released, the mold is separated from the lower mold base by the extension of the push-up spring and is supported on the rail by the linear bearing. Therefore, by applying a driving force in the direction of the rail, the mold can be easily moved.

(Example) 5J! of the present invention will be described below with reference to the drawings. An example will be explained. 2 and 3 are sectional views of the entire structure at the next position indicated by the A-in line and the B--B line in FIG. 4.

This is the state before the stroke starts.

This is a cylinder that constitutes the drive device for the cut (2).

The mold set (2) consists of an upper mold (6) and a lower mold (7), and a punch (8) is fixed to the upper mold (6), which is further urged by a spring (9) to hold down the next workpiece. 00. A urethane material is attached to reduce the impact of the ram (1), and it is equipped with a vertical guide hole (6) and a downward leading holding pin (to).

The lower mold (7) has a die hole α in the center, and guide posts α9 are fitted and fixed in the four corners, and the upper mold (6) is fitted with the guide posts α9 in the middle of the die holes to form the upper and lower parts. Assemble the molds and align the punch (8) and die hole Q41. In addition, opening springs (4), (to), etc. are interposed between the upper and lower molds, and are installed in recessed holes provided at the front and rear of the base (4), as shown in Figures 4 and 7. A rail Qv extending in the same direction as line A-A, i.e., left and right, and a rail holder ■ integrated with this are held so as to be able to move up and down, and a linear bearing with a gale is installed on the track surface of the rail (c). Slidingly mounted,
A push-up spring applies elastic force to the lower surface of the rail holder frame. What is the elastic force of these springs (c), (c)...?

WgN of flotation device (3), mold set (2), workpiece, etc.
It needs to be large enough to push up the amount.

On the lower surface of the lower die (7), a turretane material (to) that cushions the impact when the linear bearing @ rises, and a strut horn &: ■ to prevent relative movement of the linear bearing (2) are attached. Then, when the ram (1) moves upward, a gap C1 of about 1 inch is created between the support surface of the lower mold base (4) and the lower surface of the lower mold (7), and the mold set ( In 2), the opening spring (5) creates a distance of 60 m between the upper surface of the lower mold (7) and the workpiece presser head.

A gap c2 of approximately

Further, in FIG. 4, the ridge is a damper attached to the lower die, the ridge is a stopper that cooperates with the damper, and (1) is a urethane stopper with which the upper die (6) directly collides.

With the above configuration, when the workpiece is supplied to the gap C2 on the die and the ram (1) is lowered in the state shown in Figs. While compressing, it comes into contact with the upper surface of the upper mold (6) and presses down the upper mold. By pressing this down, the leading presser pin is attached to the rail holder (A).
It collides with and pushes it up against the spring (c) and pushes it down. As a result, the floating device [(3+) descends, creating a gap C3 between the linear bearing (to) and the urethane material (e) as shown in Figure 6, and the lower mold (7) Sit on the support surface.

At this time, a gap C4 still remains on the lower surface of the rail holder @. Subsequently, when the upper mold (6) is lowered as shown in Figures 8 and 9, the / Zener (8) fits into the die hole α fathom to make a hole in the workpiece, and at the same time the rail holder (A) However, the clearance C4 allows the lowering.

When the ram (1) is raised here, the leading holding pin a3 also rises together with the upper mold (6), releasing the pressure on the rail holder (a).
C), the linear bearing contacts the urethane material (A) and pushes up the lower mold (7), and the support surface of the lower mold base (4) and the lower mold (7) A gap of 0. is created between the lower surfaces of.

Next, when the drive device (5) is activated, the mold set (2) including the lower mold (7) can move lightly on the rail (2) together with the linear bearing (to), and the mold set (2) can be moved lightly on the rail (2) together with the linear bearing (to).

(7) Stop at a predetermined position with K, move on to drilling work at another position, and repeat the above operation wIt-.

(Effects of the Invention) As described above, in the present invention, multiple holes at different positions can be punched out using one set of punch and die, and the MNA bearing can be used to lift the holes and move them easily. This linear bearing is pushed by the upper mold and automatically retreats to ensure that the mold is supported by the lower mold base, but these operations are performed automatically by the vertical movement of the ram. There is no need to provide a separate drive mechanism, and the structure is simple and can be manufactured at low cost.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of drilling work by the device of the present invention;
The following figures show an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the entire device taken at the A-entry line position in FIG. 4 before entering the punching process. Figure 3 is the same (cross-sectional view taken along line B-B, Figure 4 is a plan view with the upper mold removed, Figure 5 is a bottom view of the upper mold, Figure 6 is an end view of the mold flotation device, Figure 7 is also a partial side view.
Figure 8 is a cross-sectional view at the same position as Figure 2 during punching, and Figure 9 is a cross-sectional view at the same position as Figure 3 (4)...lower mold base.
(5)...Drive device (6)...Upper mold
(7)...Lower die α3...Advanced presser pin (goods)
...Rail holder...Rail holder (To)...Linear bearing (To)...Push-up spring 1st rIA 2nd rlA Fig. 3 Fig. 4

Claims (1)

[Claims] In a hole punching device that sequentially punches holes in long sheets that are continuously fed to a press using a punch and a die, guide pins are inserted through the upper mold to which the punch is fixed and the lower mold to which the die is fixed. A mold set is constructed with an opening spring interposed therebetween, a lower mold support surface and a mold set flotation device are provided on a lower mold base located below the mold set, and the mold set flotation device is installed in a straight line on the upper surface. It consists of a rail equipped with a bearing, a rail holder that holds the rail, and a push-up spring that supports the mold set via these members, and comes into contact with the rail holder when the upper mold is lowered. A mold moving hole punching device, characterized in that a leading holding pin is provided, and a drive device is provided between the mold set and the lower mold base to reciprocate the mold set in the direction of the rail.