JP5987979B2 - Punch press - Google Patents

Description

Related applications

  This application claims the priority of Japanese Patent Application No. 2013-109586 filed on May 24, 2013, which is incorporated herein by reference in its entirety.

  The present invention relates to a punch press for punching a plate material, and more particularly to a technique for improving die replacement work.

  For example, in a turret punch press, a die holder is installed on a lower turret as an integrated die support, and a die as a lower mold is supported on the die holder. When exchanging dies, place the hand or tool between the upper and lower turrets and perform the exchanging work. This exchange operation is difficult because the die installation part of the die holder is hidden under the upper turret and cannot be seen well. In particular, in the case of a die holder in which a plurality of dies are supported side-by-side in the radial direction of the lower turret, it is difficult to replace the back side die as viewed from the outer periphery of the lower turret because the hand cannot reach from the outside of the lower turret. Is possible.

  Therefore, there are a type in which a part of the die holder can be removed so that the die replacement work can be easily performed, a type in which the die holder can be removed from the lower turret (for example, Patent Document 1), and the like. In addition, a mechanism has been proposed in which the die holder can be removed from the lower turret and a mechanism for exchanging the removed die holder with a die holder of a tool magazine provided separately from the lower turret (for example, Patent Document 2). Furthermore, there has also been proposed a structure in which a space for replacement is secured above the die by making the outer diameter of the lower turret larger than the outer diameter of the upper turret (for example, Patent Document 3).

Japanese Patent No. 2861928 No. 7-53777 Japanese Patent No. 2602176

  However, as in Patent Document 1, it takes time to remove the whole or part of the die holder because, in addition to the replacement work of the die, another heavy and hard work of detaching the die holder from the lower turret must be performed. The burden on the operator is large. In addition, as in Patent Document 2, it is necessary to install a mechanism for exchanging the die holder. Furthermore, as in Patent Document 3, it is necessary to make the outer diameter of the lower turret larger than the outer diameter of the upper turret.

  An object of the present invention is to provide a punch press having a simple structure and capable of easily and efficiently exchanging a die with respect to an integrated die support such as a lower turret.

  The punch press according to the present invention includes an integrated die support on which a plurality of punches are mounted, and an integrated die on which a plurality of dies that are below the integrated punch support and perform punching in cooperation with the punch are installed. A support. The integrated die support is configured such that the plurality of dies are installed along the outer edge of the integrated die support. The integrated die support includes an integrated die support main body, and an entrance / exit that can be in a state in which at least a part of the integrated die support main body is outside the outer edge while being connected to the integrated die support main body. A plurality of dies which are a part of the plurality of dies installed on the integrated die support are installed on the access body.

  According to this configuration, at least a part of the entrance / exit body is out of the outer edge of the integrated die support, and the die installed on the entrance / exit body is replaced with another die, or the die is temporarily taken out and polished. Reinstall after performing the above process. When the in / out body is out of the outer edge of the integrated die support, there is a wide space above and below the die installation part of the die holder, and the die can be checked visually, so the die can be replaced. Work can be done easily, reliably and safely. Since a plurality of dies are installed in the entry / exit body, a plurality of dies can be exchanged by putting one entry / exit body out of the outer edge of the integrated die support, which is efficient. The entry / exit body is outside the outer edge of the integrated die support body while maintaining the connection with the integrated die support body body. It is easy to carry out die replacement work.

  In this invention, the integrated die support may be a turret. When the integrated die support is a turret, a large number of dies are installed. Therefore, the advantage of the present invention that the die can be easily and efficiently exchanged for the integrated die support such as the lower turret is effective. Become.

  In this invention, the said entry / exit body may turn around the turning center axis provided in the said integrated die support body main body, and may enter / exit the inside and outside of the said outer edge. By adopting a configuration in which the in / out body is swiveled around the turning center axis, for example, the in / out body can be accurately moved in and out of the outer edge of the integrated die support as compared to a configuration in which the in / out body is linearly advanced / retracted. Can do. In addition, the mechanism for moving in and out of the body becomes simple and can be manufactured at low cost.

  In the present invention, a plurality of die holders may be detachably fixed to the entry / exit body, and the plurality of dies may be individually or plurally installed in each of the plurality of die holders. The number of dies installed in one die holder is not limited. When a die is installed on the entrance / exit through the die holder, various types of dies can be installed on the entrance / exit by exchanging the die holder with one corresponding to the die.

  Any combination of at least two configurations disclosed in the claims and / or the specification and / or drawings is included in the present invention. In particular, any combination of two or more of each claim in the claims is included in the present invention.

The present invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings. However, the embodiments and drawings are for illustration and description only and should not be used to define the scope of the present invention. The scope of the invention is defined by the appended claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.
It is a side view of the punch press concerning one embodiment of this invention. It is the perspective view which abbreviate | omitted a part of the punch press. It is a top view of the lower turret of the punch press. It is a perspective view which shows the state which one exit / entry body of the same lower turret came out of the outer edge of a lower turret. It is a perspective view of the entrance / exit body arrangement | positioning part of the lower turret. It is sectional drawing which shows the turning support part of the entrance / exit body of the same lower turret. It is a top view of the fixing means of the same entrance / exit body. It is sectional drawing along the VIIB-VIIB line | wire of FIG. 7A. It is sectional drawing which followed the VIIC-VIIC line | wire of FIG. 7A. It is a partial top view of the same lower turret. It is sectional drawing which followed the VIIIB-VIIIB line | wire of FIG. 8A.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall side view of this embodiment, and FIG. 2 is a perspective view with a part thereof omitted. The illustrated punch press is a turret punch press having upper and lower turrets 2 and 3. In FIG. 2, the upper turret 2 is omitted. Both the upper and lower turrets 2 and 3 have a circular planar shape, and are supported by the upper horizontal frame portion 1a and the lower horizontal frame portion 1b of the frame 1 so as to be rotatable around vertical axes that are concentric with each other. The upper turret 2 is an integrated punch support, and a plurality of punches 4 are mounted side by side along the outer edge of the upper turret 2. The lower turret 3 is an integrated die support, and a plurality of dies 5 are arranged side by side along the outer edge of the lower turret 3. In the case of the turrets 2 and 3, the “outer edge” is an outer peripheral edge.

  The upper and lower turrets 2 and 3 are rotated in synchronization with each other by a motor (not shown), so that a pair of punches 4 and dies 5 forming a pair are indexed at the processing position P. The punch 4 indexed at the processing position P is driven up and down by a punch driving source 8 such as a motor through a ram 7 to punch the plate material W by the cooperation of the punch 4 and the die 5. .

  In FIG. 1, the plate material W is fed forward, backward, left and right on the table 14 by the plate material feeding means 13 so that the processing position comes to the punch position P. The plate material feeding means 13 includes a carriage 15 that moves back and forth (Y direction) and a cross slide 16 that moves left and right (X direction), and a work holder 17 that grips an end of the plate material W is attached to the cross slide 16. It is.

  FIG. 3 is a plan view of the lower turret 3, and FIG. 4 is a perspective view showing a state different from FIG. 3 of the lower turret 3. The lower turret 3 includes a lower turret body 21 that is an integrated die support body, and a plurality of (for example, four) entrance / exit bodies 22 provided on the upper surface of the lower turret body 21 along the outer edge and arranged in the circumferential direction. Is done. A plurality of die holders 23 are detachably fixed to the upper surface of the lower turret main body 21 or the entrance / exit body 22, and the die 5 is installed in each die holder 23. In the example of the figure, one or two dies 5 are installed in one die holder 23, but three or more dies 5 may be installed in one die holder 23.

  At the center of the lower turret body 21, a plate material feeding table 24 is provided so that the upper surface is substantially the same height as the upper surface of each die 5. In addition, the two entrance / exit bodies 22 on the upper side of the drawing in FIG. 3 show a state in which the die holder 23 is not provided.

  As shown in FIG. 5, the entrance / exit body 22 is supported by the lower turret body 21 so as to be able to turn around a turning center axis 25 located in the vicinity of one end of the entrance / exit body 22 in the circumferential direction. It is possible to switch between the use position (shown by a solid line in FIG. 3) that falls within the outer edge of the turret 3 and the replacement position (shown by a two-dot chain line in the same figure) where most of the portion is outside the outer edge. . At the position of use, positioning is performed by abutting against a positioning member 26 that protrudes from the upper surface of the lower turret body 21. A fixing means 27 is provided across the lower turret body 21 and the entrance / exit body 22 to fix the entrance / exit body 22 in the use position in the vicinity of the other circumferential end of the entrance / exit body 22.

  At the exchange position, the dies 5 installed in the die holders 23 provided in the entrance / exit 22 are in a state of being out of the outer edge of the lower turret 3. It is not always necessary that all the dies 5 installed in the die holders 23 provided in the entrance / exit 22 are in a state of being out of the outer edge of the lower turret 3, and some dies 5 have outer edges. It may be located inside. In the illustrated example, one die 5 (indicated by 5X in FIG. 3) located in the vicinity of the turning center shaft 25 is located inside the outer edge of the lower turret 3 in a state where the entrance / exit body 22 is in the use position. However, since the position is very close to the outer edge and can be easily reached from the outer periphery of the lower turret 3, there is no problem in die replacement work described later.

  As described above, when a plurality of dies 5 are installed in the entry / exit body 22, some of the dies 5 installed in the entry / exit body 22 are in a state where the entry / exit body 22 is in the replacement position. As long as the hand can be reached from the outer periphery of the lower turret 3, it may be located inside the outer edge of the lower turret 3. Here, “partial dies 5” means that not all dies 5, regardless of whether they are large or small.

  FIG. 6 is a cross-sectional view of the turning support portion of the entrance / exit body 22 by the turning center shaft 25. The turning center shaft 25 includes a large-diameter portion 25 a that fits into a recess 30 provided on the upper surface of the lower turret body 21, and a small-diameter portion 25 b that fits freely in a through-hole 31 provided in the entrance / exit body 22 via a bush 32. It is a stepped shaft consisting of The turning center shaft 25 is fixed to the lower turret main body 21 by screwing a bolt 33 inserted through a bolt insertion hole provided in the bottom surface of the lower turret main body 21 into a screw hole provided in the large diameter portion 25a. . Thereby, the entrance / exit body 22 is supported so as to be able to turn around the turning center axis 25.

  The bush 32 has a collar portion 32a at the upper portion, and this collar portion 32a is mounted on a countersink formed at the upper portion of the through hole 31, and is fixed to the entrance / exit body 22 by a bolt 34 inserted through the collar portion 32a. ing. A plurality of circumferential grease reservoir grooves 35 are formed on the outer peripheral surface of the small diameter portion 25 b of the turning center shaft 25.

  Further, a retaining member 36 is attached from above with respect to the turning center shaft 25 by a bolt 37, and the collar portion 36 a of the retaining member 36 covers the upper surface of the collar portion 32 a of the bush 32, whereby the entrance / exit body 22. And the bush 32 is prevented from coming off. In the state where the retaining member 36 is in contact with the upper end surface of the turning center shaft 25, a minute gap is formed between the flange portion 36a of the retaining member 36 and the bush 32.

  7A is a plan view of the fixing means 27 of the entrance / exit 22, FIG. 7B is a sectional view of the VIIB-VIIB, and FIG. 7C is a sectional view of the VIIC-VIIC. The fixing means 27 includes a female screw member 41 that fits into a recess 40 provided on the upper surface of the lower turret body 21, a bolt insertion member 42 provided on the access body 22, and a fixing bolt 43. 7A and 7C show a state where the fixing bolt 43 is not provided.

  The female screw member 41 is fixed to the lower turret body 21 by a bolt 45 inserted from the bottom surface of the lower turret body 21. The bolt insertion member 42 has a mounting portion 42a whose lower portion spreads in a flat plate shape, and is fixed to the entrance / exit body 22 by a bolt 46 at the mounting portion 42a. The female screw member 41 is provided with a screw hole 47 and the bolt insertion member 42 is provided with a bolt insertion hole 48 on the same axis. The screw hole 47 and the bolt insertion hole 48 are inclined inward from the outer periphery of the lower turret along the lower turret radial direction so that the lower turret outer diameter side is higher. By inserting the fixing bolt 43 into the bolt insertion hole 48 from the outer diameter side of the lower turret and screwing the male screw portion into the screw hole 47, the entrance / exit body 22 is fixed to the lower turret body 21.

  As described above, when the entrance / exit body 22 is turned around the turning center axis 25 so that the entrance / exit body 22 enters and exits the inside and outside of the outer edge of the lower turret 3, the entrance / exit body 22 can enter and exit with high accuracy. In addition, the mechanism for moving the in / out body 22 in and out becomes simple and can be manufactured at low cost. Further, when the fixing means 27 is configured to advance and retract the fixing bolt 43 obliquely downward, it is easy to perform an operation of loosening and tightening the fixing bolt 43 from the outer diameter side of the lower turret. The turning center shaft 25 may be fixed to the entrance / exit 22 and rotatable with respect to the lower turret 3.

  8A and 8B are a plan view and a cross-sectional view, respectively, of a part of the lower turret 3, and represent the installation part of the die holder 23 indicated by the white arrow in FIG. The die holder 23 supports the two dies 5 (5A, 5B) with respect to the entrance / exit body 22. For example, the die 5A has a circular planar shape and a square punching hole 5Aa at the center. The die 5B has a circular planar shape and has a circular punching hole 5Ba in the center. The die holder 23 has a substantially fan shape whose planar shape is wider toward the outer diameter side of the lower turret, and is fixed to the entrance / exit 22 by a plurality of bolts 50 inserted from the bottom surface of the entrance / exit 22 of the die holder 23.

  The dies 5 are respectively fitted into countersink-shaped die holding recesses 51 provided on the upper surface of the die holder 23, and are seated on the annular bottom surface of the die holding recess 51 with the upper end protruding from the upper surface. Following the bottom surface of the die holding recess 51, a slag discharge hole 52 having a smaller diameter than the die holding recess 51 extends downward. The slag discharge hole 52 communicates with the slag drop hole 53 of the entrance / exit 22 and the slag drop hole 54 of the lower turret 3.

  A flat table 56 is provided on the upper portion of the die holder 23, and a large number of brushes 57 that support the plate material W from below are implanted in the table 56 upward. A similar brush 58 is also implanted upward on the table 24 of the lower turret body 21. Instead of the brushes 57 and 58, ball bearings (not shown) for supporting the plate material W from below may be provided on the tables 24 and 56.

  The die holder 23 shown in FIGS. 8A and 8B is an example of a plurality of die holders 23, but other die holders 23 basically have the same structure except for the difference in the number, size, and shape of the dies 5 to be installed. is there.

  As shown in FIGS. 3 and 4, the lower turret 3 has a die holder 23 fixed to the lower turret body 21 and a die holder 23 fixed to the entrance / exit body 22. In the example of the figure, the number of die holders 23 fixed to the lower turret body 21 is two, and they are arranged at positions facing each other across the center O of the lower turret 3. In these two die holders 23, only one relatively large die 5 is installed. The number of entry / exit bodies 22 is four, and six or eight die holders 23 are fixed to each entry / exit body 22.

  The two entry / exit bodies 22 to which the six die holders 23 are fixed are arranged at positions facing each other across the center of the lower turret 3. Similarly, the two entry / exit bodies 22 to which the eight die holders 23 are fixed are also arranged at positions facing each other across the center of the lower turret 3. In addition, each entry / exit body 22 is adapted to turn around the turning center axis 25 on the same side in the circumferential direction of the lower turret. That is, each of the entrance / exit bodies 22 and the die holders 23 are arranged point-symmetrically. The above is an example, and the number and arrangement of the entrance / exit body 22 and the die holders 23 provided on the entrance / exit body 22 are not limited thereto. For example, the number of entry / exit bodies 22 may be 1 to 3, or 5 or more.

  In use, the punch press having this configuration is such that all the entry / exit bodies 22 are positioned at the use position and fixed by the fixing means 27. When exchanging the die 5, the entrance / exit body 22 in which the die 5 to be exchanged is installed is set to the exchange time position. At the time of replacement, there is a wide space above and below the die installation part of the die holder 23, and the die installation part can be confirmed well visually, so that the replacement work of the die 5 can be performed easily, reliably and safely. Can be done.

  Since the plurality of dies 5 are installed in the entry / exit body 22, the plurality of dies 5 can be exchanged by putting one entry / exit body 22 into the replacement position, which is efficient. Since the entry / exit body 22 is in a state of leaving the outer edge of the lower turret 3 while maintaining the connection with the lower turret body 21, the entry / exit body 22 at the time of replacement can be secured at an appropriate position, It is easy to replace the die 5.

  If the die holders 23 on which the die 5 having a high replacement frequency are installed are collectively provided in the same entrance / exit body 22, the number of entrance / exit bodies 22 can be reduced and the efficiency of the exchange operation can be improved. Further, even if the dies 5 used for processing one product are collectively provided in the same entry / exit body 22, the efficiency of the replacement work can be improved.

  As in this embodiment, when the die 5 is installed on the lower turret main body 21 or the entrance / exit body 22 of the lower turret 3 via the die holder 23, various types of types can be obtained by replacing the die holder 23 with one corresponding to the die 5. The die 5 can be placed on the lower turret 3 which is an integrated die support. The die 5 may be installed directly on the lower turret body 21 or the entrance / exit body 22 without providing the die holder 23.

  As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification. For example, the punch press of the above embodiment is a turret punch press, but the present invention can also be applied to punch presses other than the turret type. For example, an integrated punch support and an integrated die support can be applied to a rectangular punch press. Accordingly, such changes and modifications are to be construed as within the scope of the invention as defined by the appended claims.

2 Upper turret (integrated punch support)
3 Lower turret (integrated die support)
4 Punch 5 Die 21 Lower turret body (Integrated die support body)
22 Entry / exit body 23 Die holder 25 Rotation center axis

Claims (4)

Punch comprising an integrated punch support on which a plurality of punches are mounted, and an integrated die support on which a plurality of dies under the integrated punch support and performing punch processing in cooperation with the punch are installed A press,
The integrated die support is configured such that the plurality of dies are installed along the outer edge of the integrated die support. The integrated die support includes an integrated die support body, an integrated die support body, An entrance / exit body that can be in a state where at least a part of the outer edge is outside the outer edge while maintaining the connection of the plurality of dies installed in the integrated die support body. A punch press in which multiple dies that are part of the machine are installed.   The punch press according to claim 1, wherein the integrated die support is a turret.   3. The punch press according to claim 1, wherein the entry / exit body pivots around a pivot center axis provided in the integrated die support body and enters / exits the outer edge.   The plurality of die holders are detachably fixed to the entry / exit body, and the plurality of dies are individually or plurally installed in each of the plurality of die holders. Punch press.

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