JPH03297525A - Punching die set - Google Patents

Abstract

PURPOSE:To improve the operating efficiency of a punching die set by forming a holder and a frame so that they can move relatively in a punching die set wherein a frame having a punch operating ram capable of freely vertical movement is provided on the upper part of holder. CONSTITUTION:A pair of punch 3 and die 4 are faced and arranged through a clearance for inserting a material. In the punching die set wherein the frame 5 having a punch operating ram 8 capable of freely vertical movement is provided on the upper part of the holder 1, the holder 1 and the frame 5 are formed so that they can move relatively. The frame 5 is formed to the holder 1 so that it can turn in the horizontal direction, it can turn in the vertical direction or it can slide in the horizontal direction. In this way, since a space is secured in the upper part of the punch without removing the frame thoroughly, the punch and/or the die can be removed. Further, a new punch and/or die prepared separately can be set and the succeeding work can be reopened at once.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a punch/die set used when drilling or punching, for example, iron plates or other workpiece materials, and particularly relates to a punch/die set that is attached to a press or other processing means. The present invention relates to a punch/dicer cell l- which has been improved so that the punch and/or die can be easily replaced in a state where the punch/dicer cell l- is in a state where the punch/dicer l- is not significantly disassembled. [Prior Art] Conventionally, when drilling or punching a steel plate or other workpiece material, at least one pair of punches and dies are placed in a boulder provided with a gap for inserting the workpiece material. A hole is formed in the workpiece material by using punches and dies arranged oppositely through the gap, and by mounting this punch and die set on the table of a press, for example, and operating the punch through the ram of the press or cylinder. Generally, processing or punching is performed. When drilling or punching multiple holes at the same time, it is common practice to install multiple punch die cera I-s with the above configuration, or to install multiple pairs of punch dies in one punch die. It is a means. On the other hand, when manufacturing a sheet metal product in a predetermined shape by punching, bending, drawing, compression, etc., the workpiece material is
It usually goes through several steps. When manufacturing large quantities of such sheet metal products, each process or stage is processed individually in one processing mold, and the process is sequentially sent to the next stage and additional processing is performed.
A means is adopted to complete the processing at the final stage. This type of processing die structure is called a progressive die.9
For example, one sheet metal product can be obtained for each stamp of the press, which has the advantage of extremely high efficiency. 1. Conventional molds for progressive processing have a high production speed, short delivery time from inputting the workpiece to completion of processing, and there are few work-in-progress processes in the middle of press processing, making it possible to produce large quantities with a small number of people. Although it has the advantage of being possible, it also has the following problems. That is, 1
Because multiple pairs of punches and dies are built into each mold, the mold structure becomes extremely complex, requiring high-precision mold manufacturing technology, prolonging the manufacturing period, and increasing manufacturing costs. That will happen. Furthermore, when repairing or adjusting a partially damaged mold, it is necessary to disassemble the entire mold, which is extremely complicated and requires a large amount of time and man-hours. Furthermore, in the case of high-mix, low-volume production, if a dedicated mold was manufactured for each different shape of the workpiece, the mold cost would be relatively high, so the so-called FMS production method, which has been increasingly in demand in recent years, has been adopted. The problem is that it cannot be done. In order to solve the above problems, the applicant has already provided a punch/die set for machining the pilot part and a plurality of punch/die sets for machining in order in the feeding direction of the workpiece. An arbitrary number of pilot guides to be engaged are provided between the punch and die sets for processing, and the plurality of punch and die sets for processing are connected to the punch and die set for processing the pilot part n(1 ±α)P
(n is any positive integer, 0<α≦1. P is the feed pitch of the workpiece), and the pilot guide is disposed at a distance of nP from the punch/die set for machining the pilot part. , one pilot guide is disposed on the downstream side following the punch and die set for processing the pilot part. An application has been filed regarding a progressive processing device (for example, Japanese Patent Application No. 63-304694). FIG. 14 and FIG. 15 are a front view and a side view of a main part, respectively, showing an example of a punch/die set used in the progressive processing apparatus described above. In both figures, reference numeral 1 denotes a holder 2 made of, for example, steel and formed into a substantially U-shape with two gaps 2, on which a punch 3 and a die 4 are disposed facing each other with the gaps 2 interposed therebetween. Next, reference numeral 5 denotes a frame, which is made of the same material as the holder 1 and has a substantially inverted shape, and is fixed to the upper part of the holder 1 via bolts 6. Reference numeral 7 denotes a hydraulic cylinder, which is attached to the frame 5 and forms the punch 3 so as to be operable via the ram 8. A hydraulic hose 9 connects the hydraulic cylinder 7 and a hydraulic tank (not shown). If a plurality of punch/die sets having the above configuration are arranged at a predetermined interval, a workpiece material is inserted into the gap 2 between the punch 3 and the die 4, and is fed at a predetermined pitch, each of the With the punch and die center, machining corresponding to each stage can be performed sequentially, allowing smooth progressive machining of the workpiece material.

[You can do two things. [Problems to be Solved by the Invention] Although the progressive processing device comprising the punch and die set configured as described above can bring about great effects in the so-called FMS production system, there are still some problems that need to be improved. In other words, due to long-term use, punch 3 and/or
Alternatively, if the die 4 is worn or damaged, it needs to be replaced. First, punch 3 must be removed. In this case, a space corresponding to at least the length of the punch 3 is required above the punch 3, but as is clear from FIGS. 14 and 15, this space cannot be secured as is. Therefore, it is necessary to remove the bolts 6 and the frame 5, but since the hydraulic cylinder 7 and the hydraulic hose 9 are attached to the frame 5, this requires complicated work and requires a lot of time and man-hours to install and remove. The problem with hole drilling is that it takes less time to work on the main body, such as machining, and lowers the operating rate of the device. In addition, the frame 5 and the punch 3
The attachment/detachment work is usually carried out in a narrow working space, and there is a problem that not only is each task complicated, but also skill is required for each task, which increases the number of man-hours for each task. The present invention solves the above-mentioned problems and provides an improved punch-die set in which the punch and/or die can be easily replaced without removing the frame even when the holder is attached. With the goal. [Means for Solving the Problems] In order to achieve the above object, in the first invention, at least one pair of punch and die is inserted into a holder provided with a gap for inserting the workpiece material through the gap. In a punch/die set, the holder and the frame are formed to be movable relative to each other in a punch/die set in which a holder is provided with a frame which is disposed facing each other and has a vertically movable ram for actuating the punch. A technical method was adopted. In the above invention, the frame is formed to be horizontally rotatable, vertically rotatable, or horizontally slidable with respect to the holder, or the holder is horizontally slidable on a lower frame formed in an abbreviated shape. In addition, the frame may be fixed onto the lower frame. Further, in the second invention, at least one pair of punch and die are arranged facing each other with the gap interposed in a holder provided with a gap for inserting the workpiece material, and the ram for punch actuation is movable up and down. In a punch/die set including a frame provided on the upper part of the holder, a spacer ram is removably provided at the lower end of the ram. A technical method was adopted. [Function] With the above configuration, space is secured above the punch without the need to completely remove the frame. Punch and/or die can be removed. New punches and/or dies prepared separately can be installed and subsequent machining operations can be resumed immediately. [Embodiment] FIG. 1 is a perspective view of main parts showing a first embodiment of the present invention.
Identical parts are designated by the same reference numerals as in FIGS. 14 and 15. In FIG. 1, reference numeral 61 indicates a bolt hole, into which two bolts (not shown) are inserted. The frame 5 is fixed to the boulder 1 by three bolts together with the bolts 6 during normal machining. When replacing the punch 3, remove the bolt inserted into the bolt hole 61 and loosen the bolt 6 at the corner of the frame 5.
As shown in FIG. 1, the frame 5 can be rotated horizontally. Therefore, a space can be secured above the punch 3, and the corbel 3 can be removed and replaced. As a result, the entire punch/die set can be made compact, and at the same time, it does not strain the hydraulic hose (not shown) to be connected to the hydraulic cylinder 7. Without a doubt. 0 and can be shortened. FIG. 2 is a side view of main parts showing a second embodiment of the present invention,
Identical parts are indicated by the same reference numerals as in FIGS. 1, 14, and 15 (the same applies to the following embodiments). In FIG. 2, reference numeral 10 denotes a hinge, which is provided at the edge of the back side of the holder 1 and the frame 5, so that the frame 5 can be rotated vertically relative to the holder 1. Reference numeral 11 denotes a support column, which is formed to support the frame 5 when the frame 5 is rotated. After loosening bolt 6 as shown in Figure 2. If the frame 5 is rotated in the vertical direction and supported by the pillars 11, a space can be secured above the punch 3, and the punch 3 can be removed upward. Such a configuration is particularly effective when a plurality of holders 1 are arranged close to each other. FIG. 3 is a side view of the main part in partial cross section showing the third embodiment of the present invention, FIG. 4 is a cross sectional view taken along the line A-A in FIG. 3, and FIG. 5 is a side view of the main part in partial cross section showing the open state. It is a diagram. In these figures, the holder 1 and the frame 5 are engaged by dovetail grooves 12 and 13 so as to be horizontally slidable. Reference numeral 14 denotes a support member, which is fixed to the back surface of the holder 1 and supports a driving screw 15 that is screwed into the frame 5. 16 is a handle. With the above configuration, when replacing the punch 3, the third
In the figure, loosen the poles 1-6 and attach the frame 5 and holder 1.
By releasing the fixed state with the punch 3 and rotating the drive screw 15 using the handle 6, the frame 5 can be moved to the right and a space can be secured above the punch 3 as shown in FIG. . This configuration has the advantage that no extra space is required above the frame 5. FIGS. 6 and 7 are a front view and a side view, respectively, of a main part showing a fourth embodiment of the present invention. In both figures, numeral 17 denotes a lower frame, which is formed into a substantially ``1'' shape, and the frame 5 is fixed above it via bolts 6. The holder 1 is formed into a box shape as described later, and the lower frame 1
7 so that it can be slid horizontally. 18 is a positioning pin, and 19 is a fixing bolt. 20 is a rotation axis. It is rotatably provided on the lower frame 17 and engaged with two positioning pins 18 so as to be vertically movable. Reference numeral 21 denotes a lever, which is fixed to the free end of the single rotation shaft 20. Figure 8 shows the positioning pin 18 in Figures 6 and 7.
1 is an enlarged perspective view showing a rotation shaft 20 and a lever 21. FIG. In FIG. 8, reference numeral 22 denotes an eccentric pin, which is eccentrically provided integrally with the tip of the rotation shaft 20, and 1 positioning pin 1.
8 to engage with the groove 23 provided therein. With this configuration, the nine positioning pins 18 can be moved in the near direction by rotating the rotation shaft 20 in the direction of the arrow via the lever 21. Next, the ninth, FIG. 10, and FIG. 1I are an enlarged front view, a side view, and a plan view of the holder 1 in FIGS. 6 and 7, respectively. In FIGS. 9 to 11, reference numeral 24 denotes a mounting hole through which the punch 3 shown in FIGS. 6 and 7 can be mounted. 25 is a peephole, which is bored in the front side of Ruder I. Reference numeral 26 denotes a bolt hole 27, which is a positioning hole, into which the fixing bolt 19 and positioning pin 18 shown in FIGS. 6 and 7 can be inserted, respectively. The operation of the above configuration will be described with reference to FIGS. 6 to 11. First, attach holder 1 to the lower frame]
7 and rotate the rotation shaft 20 via the lever 21, the positioning pin 18 will protrude upward from the lower frame 17 and fit into the positioning hole 27 of the holder 1, thereby performing positioning. Then, at this position, the holder 1 is fixed to the lower frame 17 via the fixing bolts 19. In this state, predetermined processing operations are performed. Next, when replacing the punch 3, the positioning pin 1B is lowered by rotating the lever 21, and by removing the fixing bolt 19, the holder 1 is slid toward you, that is, to the left in FIG. Therefore, a space can be secured above the punch 3. Therefore, the punch 3 can be removed and a new one can be installed. After attaching the punch 3, the holder 1 is fixed in place as described above, and subsequent machining is continued. This configuration has the advantage that since the punch 3 and die 4 can be taken out together with the holder 1, replacement and alignment of the punch 3 and die 4 can be easily performed, resulting in good workability. be. FIG. 12 and FIG. 13 are side views of essential parts, respectively, showing a fifth embodiment of the present invention. In FIG. 12, a spacer ram 28 is formed into a cylindrical shape, for example, and is detachably screwed onto the lower end of the ram 8. The height of the frame 5 is made slightly larger than that of the previous embodiment, and the distance between the lower end of the ram 8 and the upper end of the holder 1 is greater than the length of the punch 3. In this state, normal processing using the punch 3 and die 4 is performed. Next, when replacing the punch 3, by removing the spacer ram 28 from the ram 8, a space is secured above the punch 3, so that the punch 3 can be removed as shown in FIG. In the above embodiment, an example was described in which the holder was provided with a pair of punches and a die. Even if a plurality of pairs of punches and dies are provided in the same holder, the effect is the same. Further, the locking and disengaging means having the function of restricting or allowing movement in each direction is not limited to the structure shown in the above embodiment, and other known locking and disengaging means can be applied. Furthermore, the cross-sectional shape of the punch and die can be circular, square, or other geometric shapes, and the holes can of course be used for drawing or other processing in addition to processing and punching. It is. Note that the punch and die set of the present invention can be applied not only to a progressive processing device but also when used alone. Further, the cylinder for operating the ram may use air or other fluid pressure in addition to hydraulic pressure, and furthermore, electric or mechanical driving means other than the cylinder may be used. [Effects of the Invention] Since the present invention has the structure and operation as described above,
Because space is secured above the bunch without completely removing the frame that makes up the punch/die set, the punch and/or die can be easily removed, and a new punch and/or die prepared separately can be removed. You can install the die. Subsequent machining operations can be resumed immediately. Therefore, there is an effect that the operating efficiency of the punch/die set can be greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts showing a first embodiment of the present invention. FIG. 2 is a side view of main parts showing a second embodiment of the present invention. FIG. 3 is a partially cross-sectional side view of essential parts showing a third embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along the line A--A in FIG. 3. FIG. 5 is a partially sectional side view showing the released state, FIGS. 6 and 7 are a front view and partially sectional side view of the main part showing the fourth embodiment of the present invention, respectively, and FIG. 6 and 7 are enlarged perspective views showing the positioning bin, rotation shaft, and lever, and FIGS. 9, 10, and 11 are enlarged front views showing the holder in FIGS. 6 and 7, respectively. A side view and an open plan view, and FIGS. 12 and 13 are a side view of essential parts, FIG. 14, and FIG.
Figure 5 shows the punches used in progressive processing equipment.
FIG. 2 is a front view and a side view of a main part showing an example of a die set. 1: Holder, 3: Punch, 4: Gui, 5: Frame,
8: Ram, 17: Lower frame, 28 Ni spacer ram.

Claims (6)

[Claims] (1) A frame in which at least one pair of punch and die are arranged facing each other across the gap in a holder provided with a gap for inserting the workpiece material, and a ram for actuating the punch is provided vertically movably. A punch/die set provided on the upper part of the holder, characterized in that the holder and frame are formed to be movable relative to each other. (2) The punch/die set according to claim (1), wherein the frame is formed to be horizontally rotatable relative to the holder. (3) The punch die set according to claim (1), wherein the frame is formed to be movable in the vertical direction with respect to the holder. (4) The punch/die set according to claim (1), wherein the frame is formed to be horizontally slidable with respect to the holder. (5) The punch-die set according to claim (1), wherein the holder is horizontally slidably provided on a substantially L-shaped lower frame, and the frame is fixed onto the lower frame. (6) A frame in which at least one pair of punch and die are arranged facing each other across the gap in a holder provided with a gap for inserting the workpiece material, and a ram for actuating the punch is provided so as to be movable up and down. A punch/die set provided at the upper part of the holder, characterized in that a spacer ram is detachably provided at the lower end of the ram.