JPH087946Y2 - Turret punch press die equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention mainly relates to a turret punch press die unit used when a plate-shaped work is additionally cut by a turret punch press.

[Conventional technology]

The turret punch press has an upper turret and a lower turret, and punches a plate-shaped work between a punch provided in the upper turret and a die provided in the lower turret.

Further, by successively moving the punch up and down, it is possible to carry out a postcutting process for cutting the work. As the postcutting process, for example, the method described in JP-A-63-130228 is known.

In the overcutting processing method described in the above publication, a punch having an upper end blade, an intermediate blade and a lower end blade in three stages at the lower end is continuously moved up and down by a hydraulic cylinder so that the workpiece is overcut by the lower end blade and the intermediate blade. After cutting, when a certain amount of punched scraps are accumulated in the die, the punched scraps are cut using the upper edge blade, and then the overcutting process is performed again.By controlling the stroke of the hydraulic cylinder, cutting is performed. The lower edge blade, the intermediate edge blade and the upper edge blade are selected.

[Problems to be solved by the device]

However, the mold equipment used for the conventional overcutting method is
Multiple punches are formed on one punch, and the work piece is additionally cut by the lower blade and the intermediate blade by moving the punch up and down with a minute stroke by the hydraulic cylinder, so the distance that can be cut with one stroke of the punch Is small, so it takes a lot of time to process and the work efficiency is poor.Because every time the cutting shape is changed, it must be replaced with a mold device that matches the shape. There were also problems such as deterioration of the sex.

The present invention has been made in order to improve the above-mentioned problems, and provides a die device for a turret punch press that enables efficient post-cutting processing and that the same die can be used even if the cutting shape changes. That is the purpose.

[Means and Actions for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a punch assembly mounted on an upper turret with a plurality of punch chips which are vertically movable, and selectively by using a plurality of strikers provided on a ram. By punching, a plate-shaped work can be freely punched between the punch tip and a die provided in the lower turret, and a punching punch for punching having a rectangular cutting blade among the punch tips. A punch tip having a square cutting blade with the same width as the above-mentioned cutting blade is provided on the same center line of the tip, and this punch tip is used to cut off the punch residue generated during the overcutting process. Since it is possible to perform punching processing of different shapes by the die device, the number of times of exchanging the die can be reduced.

In addition, since the punch cutting can be performed while the punch scraps generated by the punch chip for the punch cutting are cut off by another punch chip, the punch cutting can be performed efficiently.

〔Example〕

 An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, 1 is the upper turret 2 of the turret punch press.
The punch assembly 3 attached to the lower turret 4 is a die attached to the lower turret 4 so that the plate-shaped workpiece 6 can be additionally cut between the punch chip 5 and the die 3 provided in the punch assembly 1. Has become.

The punch assembly 1 has a cylindrical punch guide 7 as shown in FIG. 1, and the punch tip 5 is accommodated in the punch guide 7 so as to be vertically slidable.

The punch tip 5 has a large-diameter punch tip 5 ₁ in which a body 5a is slidably housed in a punch guide 7 and a plurality of guide holes formed in the body 5a of the punch tip 5 _1.
A large-diameter punch tip 5 ₁ is composed of, for example, three small-diameter punch tips 5 ₂ , 5 ₃ , 5 ₄ which are slidably housed in 5b.
A cutting blade 5c having a rectangular shape and a lower surface inclined vertically is formed at the tip of the cutting blade 5c and the die 3
The workpiece 6 can be additionally cut and processed between the rectangular cutting holes 3a formed in.

The punch tip 5 ₂ is the cutting blade 5c of the punch tip 5 ₁ above.
A square cutting blade 5d having the same width as the cutting blade 5c is formed on the same center line as the cutting blade 5c, and the cutting scraps 6a are cut off by the cutting blade 5d.

The remaining punch chips 5 ₃ and 5 ₄ are arranged on both sides of the punch chip 5 ₁ as shown in FIG. 2, and circular and triangular cutting blades 5e and 5f are formed at the tips thereof.

On the other hand, the upper end side of the punch tip 5 ₁ has a small diameter, and a punch head 9 whose center portion is hit from above by a hitting element 14 ₁ described below is fixed to the upper end of the small diameter portion 5 g, and the punch tip 5 ₁ has a small diameter. strip spring 10 made of elastic material such as rubber between the upper plate 7a provided at the upper portion of the head 9 and the punch guide 7 have been disposed, biases the punch chip 5 ₁ upward.

The upper end of the other punch tips 5 ₂ to 5 ₄ has a small diameter part of 5 g.
Of the punching head 9 and the upper end of the stripping spring 10 through the through hole 10a provided in the strip spring 10 and into the through hole 9a provided in the punching head 9. chip 5 _{2-5 4} of the upper surface is adapted to be substantially flush.

A strip spring 11 made of a coil spring is interposed between a spring seat 5h provided slightly above the intermediate portion of each punch tip 5 ₂ to 5 ₄ and the upper surface of the body portion 5a of the punch tip 5 _1. The punch springs 5 ₂ to 5 ₄ are biased upward by the strip spring 11.

On the other hand, at the striking position of the turret punch press, a ram 14 that is vertically moved by a drive mechanism (not shown) is provided.
A plurality of strikers 14 ₁ , 14 ₂ , 14 ₃ , 14 ₄ are provided on the lower surface of the ram 14 so as to be retractable.

These strikers 14 ₁ to 14 ₃ are provided in the same arrangement as the plurality of punch chips 5 ₁ to 5 ₄ provided in the punch assembly 1, and these strikers 14 ₁ to 14 ₄ are selectively projected. By moving the ram 14 up and down, the striker 14 ₁ to 1
The punch chips 5 ₁ to 5 ₄ corresponding to 4 ₄ can be hit from above.

Then, _{one of the} punch chips 5 ₁ to 5 ₄ is moved downward by the impact of the impactors 14 ₁ to 14 ₄ , and the cutting blades 5c, 5d, 5e, 5f provided at the tip are provided at the lower end of the punch guide 7. was protruding into holes 15 ₁ to lower than 15 ₄ of the stripper plate 15, is cut hole 3a which to not cutting blades 5d formed in the die 3 corresponding to 5f, 3b, the workpiece 6 between 3c to allow punching ing.

In the drawing, 20 is the punch tip 5 with respect to the punch guide 7.
A positioning key 21 for positioning the punch assembly 1, and a positioning key 21 for positioning the punch assembly 1 with respect to the upper turret 2.
Indicates a clamp for moving the workpiece 6 to be subjected to the additional cutting in the XY directions.

Next, the operation of the mold device including the punch assembly 1 and the die 3 will be described.

The first clamp 22 hitting the workpiece 6 in a late cut machining by moving the workpiece 6 is positioned to additionally cut start position of the workpiece 6 in punching position, then the ram 14 striking element 14 ₁ for striking the punch chip 5 ₁ Start the overcutting process by projecting to the lower end of.

When the striker 14 ₁ strikes the punch head 9 at the upper end of the punch tip 5 ₁ by the downward movement of the ram 14, the punch tip 5 ₁ is moved downward against the spring 10 for the strip, and the cutting blade 5 c at the lower end of the punch tip 5 ₁ Protrudes from the hole 15a of the stripper plate 15, and the work 6 is cut by a length l ₁ between the cutting blade 5c and the die 3 as shown in FIG.

After that, as the punch tip 5 ₁ rises, the striker 14 ₁ is immersed, and the striker 14 ₂ to be used next is projected to strike the punch tip 5 ₂ from above as the ram 14 moves downward as shown in FIG. To do.

As a result, the punch chip 5 ₂ is moved downward, and the punched scrap 6a cut by the punch chip 5 _{1 is} cut off between the cutting blade 5d of the punch chip 5 ₂ and the die 3, and the work 6 is cut to a length l ₂
Rectangular holes are formed.

In this case in the variable vertical stroke of the ram 14, by changing the vertical stroke of the punch chip 5 _1, it can be varied within a certain range of length l ₂ of the hole.

_First, after cutting the length l ₁ with the punch tip 5 ₁ , the punch scrap 5 ₂ is cut off with the punch tip 5 ₂ and the long hole 6 b with the length l ₂ is cut.
In the example shown in FIG. 7, the vertical stroke of the ram 14 is changed to cut the length l _{3 first} by the punch tip 51, and then the punch tip 5 is cut as shown in FIG. According to this method, the scrap 6a is cut off by the length l ₄ while leaving the cut portion l ₅ by ₂ and then the additional cutting is performed following the cut portion l _5. According to this method, as shown in FIG. ) To (d), the punching process can be performed without leaving a drooping mark, and the number of saw-toothed marks formed on the sheared surface can be reduced.

Further, by hitting the rest of the punch chip ₃ or ₄ in the striker 14 ₃ or 14 ₄ when changing the punching shape of the workpiece, the round hole in between the cutting hole 3c of the punch chip ₃ and the die 3, also be triangular hole between the cutting hole ₄ of the punch chip 5 ₄ and the die 3 are respectively punched.

Of course, punching of other shapes is possible by changing the shape of the cutting blades 5e, 5f of the punch chips 5 ₃ , 5 ₄ .

[Effect of device]

As described in detail above, this invention provides a plurality of punch chips in the punch assembly, and selectively punches these punch chips to enable punching of different shapes. Since the number of times of changing the mold can be reduced as compared with the case where the mold is changed every time it changes, the productivity can be improved.

In addition, since the punch chip for punching scrap cutting having a square cutting blade having the same width as the above-mentioned cutting blade is provided on the same center line of the punching chip for post-cutting processing having a rectangular cutting blade, Addition cutting is performed by punching a workpiece using a punch tip for processing, and by continuing the addition cutting work while cutting off the scraps generated by the cutting work with the punch chip for cutting scraps. Since the length can be made longer than that of the conventional mold device, the working efficiency is greatly improved and the occurrence of saw-tooth marks can be reduced.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a sectional view of a mold device, Fig. 2 is a view from the direction of Fig. 1 II, and Fig. 3 is a view from the direction III of Fig. 1. FIG. 4, FIG. 4 and FIG. 5 are explanatory views of the operation, and FIGS. 6 (a) to 6 (d), FIG. 7 and FIG. 8 are explanatory views showing other additional cut-off dimensions. 1 is a punch assembly, 2 is an upper turret, 3 is a die, 4 is a lower turret, 5 ₁ to 5 ₄ are punch tips, 5 c and 5 d are cutting blades, 6 is a work, 14 is a ram, and 14 ₁ to 14 ₄ are Striker.

Claims (1)

[Scope of utility model registration request] 1. A punch assembly 1 attached to an upper turret 2 is provided with a plurality of punch tips 5 ₁ to 5 ₄ which are vertically movable, and these punch tips 5 ₁ to 5 ₄ are attached to a ram 14.
The plate-shaped work 6 is punched between the punch chips 5 ₁ to 5 ₄ and the die 3 provided on the lower turret 4 by selectively hitting with a plurality of hitting elements 14 ₁ to 14 ₄ provided on the lower turret 4. The punch chips 5 ₁ to 5
Of ₄ 5, on the same center line of the punching tip 5 ₁ for post-cutting processing having a rectangular cutting blade 5 c, a punching tip 5 ₂ having a square cutting blade 5 d having the same width as the above cutting blade 5 c is provided. , the mold apparatus of the turret punch press is formed by a so cut off scrap generated during additionally cut processing by the punch chip 5 _2.