JP4153930B2 - Short punch mold conversion structure - Google Patents

Description

  The present invention relates to a short punch mold conversion structure for converting a short punch mold used in a short punch mold corresponding turret punch press into a long punch mold corresponding turret punch press.

  The turret punch press currently used by press manufacturers is compatible with short punch dies and long punch dies. The supply of turret punch presses has been reduced, and when a press processing company that has used turret punch presses compatible with short punch dies has newly introduced turret punch presses compatible with long punch dies, it will be used until now While storing a lot of short punch dies, many new long punch dies have to be purchased, which imposes a heavy burden on the equipment and cannot absorb the capital investment due to the processing cost. The problem is getting worse.

  The punch part composing the short punch mold is very expensive. In order to reduce the equipment burden on the press processor accompanying the mold exchange, the punch part composing the short punch mold is used as the long punch mold. It can be appropriately converted to a die-supporting turret punch press, thereby solving the above problems.

  In short, as a means for solving the above-mentioned problems, the present invention is configured such that an extension rod for increasing the length of the punch is screwed onto the upper end of the punch constituting the short punch die, and the short punch die is attached to the upper end of the extension rod. The punch head that composes the die is screwed, the coil spring that composes the short punch die and the spacer cylinder are extrapolated to the same rod with the spacer cylinder at the upper position, and the spring at the upper end that holds the punch guide cylinder extrapolated. A holder cylinder having a receiving flange is extrapolated to the upper end rod portion of the punch, and the punch head is hit with a hammer, whereby the coil spring is guided under the guidance of the punch guide cylinder by the punch head, the extension rod and the punch. While compressing between the spacer tube and the spring bearing flange, Configuration and was to be, is to provide a convertible structure of short punch mold to be subjected to conversion use to Long punch mold corresponding turret punch press.

  According to the present invention, a plurality of parts including a punch part of a short punch mold that must be stored or replaced, which are owned in large quantities by a press processor, are reused as conversion parts, and a turret for long punch molds is used. We can provide punch dies that can be used appropriately for punch presses, thereby greatly reducing the economic burden of the turret punch presses that support long punch dies, and the management of press manufacturers whose mainstream is SMEs. The beneficial effect is extremely enormous.

  The best mode for carrying out the present invention will be described below with reference to FIGS. Fig. 1 is a cross-sectional view of a short punch die used in a turret punch press compatible with a short punch die, and Fig. 2 is a new one to convert the punch of a short punch die into a die corresponding to a long punch die. FIG. 3 is a cross-sectional view of a die having a conversion structure used for conversion to a turret punch press corresponding to a long punch die formed using the punch 1 or the like constituting the short punch die. FIG.

  In FIG. 3, the parts used in the short punch mold are represented by cross-sectional oblique lines in the same direction, and parts newly prepared for forming the conversion structure are represented by cross-sectional oblique lines in a direction different from the above. In FIG. 3, the diverted parts of the short punch mold are represented by the same reference numerals as those in FIG. 1.

  As shown in FIG. 1, the short punch die used in the turret punch press corresponding to the short punch die is screwed into the punch head 3 to which the hammer 6 is hit by the upper end rod portion 1a of the punch 1. At the same time, the punch guide tube 2 is extrapolated to a lower end rod portion 1b having a punching blade 1c at the lower end, and the upper end of the punch 1 between the turret receiving seat 2c provided at the upper end of the punch guide tube 2 and the punch head 3. The rod spring 1a has a configuration in which a coil spring 4 is extrapolated.

  A male screw 1d is provided on the outer peripheral surface of the upper end of the upper end rod portion 1a of the punch 1, while the punch head 3 comprises a flange portion 3a and a boss portion 3b, and a female screw is provided on the inner peripheral surface of the boss portion 3b. 3c is provided, and the male screw 1d is screwed into the female screw 3c, thereby integrally attaching the punch head 3 to which the hammer 6 is hit by the upper end rod portion 1a of the punch 1.

  Further, as a means for firmly attaching the punch head 3 and preventing loosening, the boss portion 3b of the punch head 3 is press-fitted into the key cylinder 5 and tightly fitted to achieve the above-mentioned screwing.

  The coil spring 4 is inserted between a spring receiving flange 5 a of the key cylinder 5 and a holder cylinder 7 described below of the punch guide cylinder 2, and is compressed and extended between the both 5 a and 7.

  Further, the punch guide tube 2 is fitted into the inner peripheral surface of the turret receiving seat 2c via the coupling ring 10, and the holder tube 7 is slid onto the upper end of the lower end rod portion 1b to thereby punch the punch guide. The cylinder 2 is extrapolated to the lower end rod portion 1b.

  The lower end rod portion 1b of the punch 1 is made larger in diameter than the upper end rod portion 1a, the punching blade 1c is extended from the lower end thereof, and the lower end surface of the holder tube 7 is brought into contact with the shoulder portion of the large diameter lower end rod portion 1b. The punch guide cylinder 2 is prevented from dropping downward.

  Thus, in the short punch die, the punch guide tube 2 is inserted into the through hole 8a provided in the turret 8 of the turret punch press, and the turret receiving seat 2c is seated on the inlet side edge of the through hole 8a. When the punch head 3 is hit with a hammer 6 in the mounted state, the coil spring 4 is punched with the punch head 3 and the punch guide tube 2 under the guidance of the punch guide tube 2. The work plate 9 is lowered while being compressed between the holder cylinders 7 of the upper end, and the work plate 9 is punched.

  The side wall of the punch guide tube 2 is provided with a guide groove 2a for sliding the slider 1e protruding from the side surface of the lower end rod portion 1b of the punch 1 to guide the vertical movement of the punch 1 relative to the punch guide tube 2. .

  Further, an opening 2b for allowing the punching blade 1c of the punch 1 to enter and exit is provided on the lower end surface of the punch guide cylinder 2, and the punching blade 1c projects downward from the opening 2b, thereby punching the work plate 9. .

  Hereinafter, a punch die conversion structure that can be appropriately used for a turret punch press corresponding to a long punch die while reusing a plurality of components including the punch portion of the short punch die as a conversion component will be described.

  An extension rod 11 that increases the length of the punch 1 is screwed onto the upper end of the punch 1 constituting the short punch die.

  That is, the lower end of the extension rod 11 is screwed into the male screw 1d by using the male screw 1d provided at the end of the upper end rod portion 1a of the punch 1.

  The extension rod 11 is newly prepared for forming a conversion structure so that the length of the punch 1 of the short punch mold matches the length of the long punch mold.

  In other words, a coupling hole 11a that opens at the lower end surface is provided at the lower end of the extension rod 11, and the end of the upper end rod portion 1a of the punch 1 is inserted into the coupling hole 11a while the male screw 1d is coupled. The upper end surface of the upper end rod portion 1a of the punch 1 is abutted against the inner bottom surface 11c of the coupling hole 11a and tightened strongly.

  A punch head 3 constituting a short punch mold is screwed onto the upper end of the extension rod 11. That is, the boss portion 3b of the punch head 3 is screwed with a male screw 11d provided at the upper end portion of the extension rod 11 with a female screw 3c.

  Further, as a means for firmly attaching the punch head 3 and preventing it from loosening, the boss 3b of the punch head 3 is press-fitted into the key cylinder 5 and is screwed in while being tightly fitted. The key cylinder 5 is a component constituting a short punch mold.

  A coil spring 4 and a spacer cylinder 12 composing a short punch mold on the extension rod 11 are extrapolated with the spacer cylinder 12 in an upper position, and the coil spring 4 and the spacer cylinder 12 are punch punches 3 and a punch guide cylinder which will be described later. 13 is inserted.

  The spacer cylinder 12 is newly prepared for forming the conversion structure so that the length of the coil spring 4 composing the short punch mold matches the length of the long punch mold.

  Further, a holder cylinder 14 having a spring receiving flange 14a at the upper end of the cylinder portion 14b is prepared, and the punch guide cylinder 13 is externally held by the holder cylinder 14 so that the punch guide cylinder 13 is externally held. Is inserted into the upper end rod portion 1 a of the punch 1.

  That is, the holder tube 14 is extrapolated to the upper end rod portion 1a of the punch 1, the lower end of the tube portion 14b of the holder tube 14 is brought into contact with the shoulder portion 1f of the large diameter rod portion (lower end rod portion 1b) of the punch 1, The assembly of the punch guide cylinder 13 and the holder cylinder 14 is extrapolated so as not to fall off the punch 1.

Further, the punch guide tube 13 is closely fitted on the tube portion 14 b of the holder tube 14, and the turret receiving seat 13 a provided at the upper end of the punch guide tube 13 is brought into contact with the lower surface of the spring receiving flange 14 a of the holder tube 14. To do.

A coupling ring 10 is interposed between the inner peripheral surface of the turret receiving seat 13a and the base inner peripheral surface of the cylindrical portion 14b of the holder cylinder 14 to prevent the punch guide cylinder 13 from falling off.

  The side wall of the punch guide tube 13 is provided with a guide groove 13b for sliding the slider 1e protruding from the side surface of the lower end rod portion 1b of the punch 1 to guide the vertical movement of the punch 1 relative to the punch guide tube 13.

  Further, an opening 13c for allowing the punching blade 1c of the punch 1 to enter and exit is provided on the lower end surface of the punch guide cylinder 13, so that the punching blade 1c can move in and out through the opening 13c, and the punching blade 1c projects downward. Thus, the work plate 9 is punched.

The punch guide cylinder 13 having a turret receiving seat 13a at the upper end is a punch guide cylinder of a long punch mold commercially available from the manufacturer of the turret punch press , and this punch guide cylinder 2 constitutes the short punch mold. Use instead .

  As described above, the length of the punch 1 is increased by the extension rod 11, and the punch guide cylinder 13 is extrapolated to the upper end rod portion 1 a of the increased punch 1 via the holder cylinder 14.

  For this reason, the cylinder part 14b of the holder cylinder 14 is extrapolated to substantially the entire length of the outer peripheral surface of the upper end rod part 1a so that the lower end surface of the cylinder part 14b is in contact with the shoulder part 1f. Insert between 1a.

  Therefore, the holder cylinder 14 is newly prepared for remodeling the length of the punch 1 of the short punch mold to match the length of the long punch mold, that is, for forming a conversion structure.

  Further, a dish-shaped recess 14c that can be opened on the peripheral surface of the upper end rod portion 1a is provided on the upper surface of the spring receiving flange 14a of the holder tube 14, and an inverted conical portion 11e is provided on the peripheral surface of the lower end of the extension rod 11. When the extension rod 11 is lowered together with the punch 1, the inverted conical portion 11e is received in the dish-shaped recess 14c to increase the downward stroke of the punch 1, and thus the punch required for the long punch die The stroke was secured.

Thus, in the punch die corresponding to the long punch die having the above-mentioned conversion structure, the punch guide tube 13 is inserted into the through hole 8a provided in the turret 8 of the turret punch press, and the turret receiving seat 13a is inserted into the through hole 8a. The punch head 3 is seated on the edge of the inlet side of the punch, and the punch head 3 is hit with the hammer 6 in the mounted state, whereby the punch head 3, the extension rod 11 and the punch 1 are guided by the punch guide tube 13. The coil spring 4 is lowered while being compressed between the spacer cylinder 12 and the spring receiving flange 14a, and the work plate 9 can be punched.

  As described above, when the punch 1 is lowered, the inverted conical portion 11e at the lower end portion of the extension rod 11 is received into the dish-shaped recess 14c, and a punch stroke necessary for the long punch die can be secured.

Sectional drawing of the short punch metal mold | die currently used for the turret punch press corresponding to a short punch metal mold | die. A to D are cross-sectional views of main components newly prepared for converting a punch or the like of a short punch die into a die corresponding to a long punch die. Sectional drawing of the metal mold | die with the conversion structure used for conversion to the turret punch press corresponding to the long punch metal mold | die formed using the punch etc. which comprise the said short punch metal mold | die.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Punch, 1a ... Upper end rod part, 1b ... Lower end rod part, 1c ... Punching blade, 1d ... Male screw, 1e ... Slider, 1f ... Shoulder part, 2 ... Punch guide cylinder, 2a ... Guide groove, 2b ... Opening 2c ... Turret receiving seat, 3 ... Punch head, 3a ... Flange part, 3b boss part, 4 ... Coil spring, 5 ... Key cylinder, 5a ... Spring receiving flange, 6 ... Hammer, 7 ... Holder cylinder, 8 ... Turret, 8a ... through hole, 9 ... work plate, 10 ... coupling ring, 11 ... extension rod, 11a ... coupling hole, 11b ... female screw, 11c ... inner bottom surface, 11d ... female screw, 11e ... inverted cone, 12 ... spacer Tube, 13 punch guide tube, 13a ... Turret receiving seat , 14 ... Holder tube, 14a ... Spring receiving flange, 14b ... Tube portion, 14c ... Dish shaped recess

Claims (1)

A short punch die conversion structure for converting a short punch die used for a short punch die into a turret punch press compatible with a long punch die, the short punch die being a punch A punch head to which hammering is applied is screwed to the upper end of the upper end rod portion of the upper end of the punch guide tube, and a punch guide tube is extrapolated to the lower end rod portion having a punching blade on the lower end of the upper end rod portion. A coil spring is extrapolated to the upper end rod portion of the punch between the turret receiving seat and the punch head , and the punch is added to the upper end of the upper end rod portion of the punch constituting the short punch mold to increase the length. screwed extension rod, to the composition of the short punch tool to the upper end of the extension rod above Panchihe With screwing de, the coil springs and the spacer tube for the composition of the short punch in the extension rod extrapolated to the higher of the spacer tube further receives the turret to the upper end of the composition of the short punch Instead of the punch guide cylinder having a seat, a punch guide cylinder having a turret receiving seat at the upper end composing the long punch mold is used, and a holder cylinder having a spring receiving flange at the upper end for holding the punch guide cylinder by extrapolation is provided. extrapolated to the upper rod portion of the punch, the coil spring under guidance by the punch guide tube the same punch head and the extension rod and the punch which composition the long punch by striking the punch head with a hammer your between the spacer tube and the spring receiving flange Convertible structure of the short punch, characterized in that where the structure descends while compressing Te.

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