JP4289484B2 - Die mounting device in punch press - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a die mounting device in a punch press having a die pressing device or a die vertical movement device.
[0002]
[Prior art]
Conventionally, as is well known, punch presses such as turret punch presses have a die pressing device (lower die pressing device) or a die up-and-down moving device (die up-and-down mechanism) as a device for driving a die during molding processing. The former is disclosed, for example, in JP-A-5-285553, and the latter is disclosed in, for example, JP-A-4-100355.
[0003]
Among them, the die pressing device comprises a contact member 37 at the tip of the piston rod 35 shown in FIG. 1 of JP-A-5-285553 and a hydraulic cylinder (not shown) as a drive source thereof (paragraph number 0016 of the same publication). ) In the case of the upward push-up upward molding, that is, the upward molding performed by the die side where the workpiece is pressed from below while the workpiece is pressed by the upper punch side, only the die chip of the die used for the molding is pushed up from below. (FIG. 2 of the publication).
[0004]
This makes it possible to reduce the distortion and warpage by adjusting the pressure from above and the pressure from below, and by controlling the height of the die chip, it is possible to process a molded part with a large height. It becomes.
[0005]
Further, the die vertical movement device (hydraulic servo cylinder 103 provided with the piston rod 101 shown in FIGS. 1 and 2 (b) of Japanese Patent Laid-Open No. 4-100645) is formed by pressing upward and downward, that is, pressing and pressing the workpiece. In the case of upward molding performed by the punch side pressed down from above, the entire die used for the molding is positioned above the pass line.
[0006]
As a result, the die can be protruded from the pass line only during the molding process, and the back surface of the moving workpiece can be prevented from being damaged.
[Problems to be solved by the invention]
[0007]
However, the above-described conventional die pressing device (Japanese Patent Laid-Open No. 5-285553) and die up-and-down moving device (Japanese Patent Laid-Open No. 4-100355) are intended for dedicated molds having completely different configurations and operations.
[0008]
Therefore, the conventional die pressing device and the die up-and-down moving device cannot be applied to a die other than the dedicated die.
[0009]
For example, a die pressing device (Japanese Patent Laid-Open No. 5-285553) can push up only a die chip of a downwardly-upwardly upward forming die that is a dedicated die, but a die other than a dedicated die, for example, an upwardly-downwardly upwardly-shaped die (JP-A-4-100635) cannot be positioned above the pass line.
[0010]
As a result, the range of use of the die using the die pressing device is limited to a very narrow range of dedicated dies, so conventionally, the range of use of the die in the punch press is narrowed, and the use efficiency of the die is reduced. It is falling.
[0011]
This also applies to the range of use of a die using a die vertical movement device, and the die vertical movement device can be applied only to a dedicated die.
[0012]
An object of the present invention is to extend the range of use of a die in a punch press by allowing the die pressing device or the die up-and-down moving device to be applied to a die other than a dedicated die as it is. It is to improve efficiency.
[0013]
[Means for Solving the Problems]
In order to solve the above problems, according to the present invention, as shown in FIG.
In the punch press having the die pressing device 19 or the die vertical movement device,
Die D ₁ , D ₂ , D _Three A die holder 22 inserted into an opening 23 formed in the die holder 20 and guided in the vertical direction;
A hollow member 31 on which the die holder 22 is placed and locked;
A technical means called a die mounting apparatus in a punch press characterized by comprising a pressing plate 32 detachably provided at the lower end of the hollow member 31 is provided.
[0014]
Therefore, according to the configuration of the present invention, for example, in the turret punch press having the die pressing device 19, the die is formed as an upwardly pressed down forming die D. ₁ 1st shaping | molding die D comprised by (FIG. 3) ₁ In this case, the first forming die D ₁ Is directly held by the die holder 22 (FIG. 3 (A)), and with the pressing plate 32 attached to the hollow member 31, the lower ram 18 constituting the moving portion 18 of the die pressing device 19 (FIG. 3 ( B)) If the pressing plate 32 is pressed, the hollow member 31 rises and the first forming die D ₁ The whole is positioned above the pass line PL, or the above die is pushed upward and the upward forming die D ₂ Second forming die D constituted by (FIG. 4) ₂ In this case, the second forming die D ₂ (FIG. 4 (A)) is held by the die holder 22 through the spacer 38 so as to match the pass line PL, and the pressing plate 32 is separated from the hollow member 31, the lower ram of the die pressing device 19 can be obtained. Since the outer diameter of 18 is smaller than the inner diameter of the hollow member 31, the lower ram 18 is caused to enter the hollow member 31 (FIG. 4B) to press the spring seat 45 at the lower end of the die chip 41. As a result, only the die chip 41 is pushed up from below.
[0015]
Thereby, the die pressing device 19 is the second molding die D that is a dedicated die as it is. ₂ (FIG. 4) as well as other, for example, first molding die D ₁ This is also applied to (FIG. 3), and the range of use of the die is expanded.
[0016]
Therefore, according to the present invention, the die pressing device or the die up-and-down moving device can be applied to a die other than the dedicated die as it is, thereby expanding the usage range of the die in the punch press, The utilization efficiency can be improved.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the accompanying drawings by embodiments. FIG. 1 shows a turret punch press to which a die mounting device 60 according to the present invention is applied. The turret punch press has a die pressing device 19.
[0018]
This turret punch press has an upper turret 6 and a lower turret 7, and punches P and dies D are arranged concentrically on the upper turret 6 and the lower turret 7.
[0019]
Chains 4 and 5 are wound around the rotation shafts 8 and 9 of the turrets 6 and 7 and the drive shaft 3 is wound around. Thus, the predetermined molds P and D are selected at the punch center C.
[0020]
An upper ram 2 for hitting the punch P is provided in the upper frame 1 just above the punch P in the punch center C.
[0021]
Further, a die pressing device 19 is installed in the lower frame 21 immediately below the die D in the punch center C, and a moving part 18 of the die pressing device 19, for example, a piston rod tip of a built-in hydraulic cylinder 19A. The lower ram 18 faces a hollow member 31 (to be described later) constituting the die mounting device 60 according to the present invention.
[0022]
In this case, the outer diameter of the lower ram 18 (FIGS. 3 and 4) is formed smaller than the inner diameter of the hollow member 31.
[0023]
Therefore, as will be described later, the die pressing device 19 is a dedicated die, which is a downward push-up upward forming die D. ₂ That is, the second forming die D ₂ (FIG. 4) When only the die chip 41 is pushed up from below, if the pressing plate 32 is detached from the hollow member 31 (FIG. 4A), the lower ram 18 is hollowed (FIG. 4B). It can be made to enter the member 31, whereby only the die chip 41 can be pushed up.
[0024]
However, the die pressing device 19 is a mold other than a dedicated mold, for example, an upwardly pressed upward forming die D ₁ That is, the first molding die D ₁ When positioning the whole (FIG. 3) above the pass line PL, if the pressing plate 32 is attached to the hollow member 31 (FIG. 3A), the lower ram 18 (FIG. 3B) ) By pressing the pressing plate 32, the first molding die D ₁ The whole can be positioned by projecting upward from the pass line PL.
[0025]
The die pressing device 19 is originally a second molding die D that is a dedicated die as described above. ₂ 4 (FIG. 4) is a device that pushes up only the die chip 41 (FIG. 4B) from below. ₁ (Fig. 3), punching die D described later _Three (FIG. 6), the range of use of the mold in the punch press is expanded, and the use efficiency of the mold is improved.
[0026]
As a driving method of the die pressing device 19, there are electric pressure, pneumatic pressure and the like in addition to the above-described hydraulic pressure.
[0027]
On the other hand, a center table (not shown) is fixed at the center of the turret punch press, and a carriage base 11 is disposed across the center table.
[0028]
The carriage base 11 is placed on a support bracket 16 slidably coupled to a Y-axis guide 17, and side tables 10 and 15 disposed on both sides of the center table are attached to the support bracket 16. .
[0029]
A ball screw 14 of a Y-axis motor My is screwed onto the carriage base 11, and when the Y-axis motor My is driven, the ball screw 14 is rotated. It moves in the axial direction.
[0030]
A carriage 12 carrying a clamp 13 for gripping the workpiece W is slidably coupled to the carriage base 11, and a ball screw (not shown) of an X-axis motor (not shown) is screwed to the carriage 12. When the X-axis motor is driven, the ball screw rotates, and the carriage 12 moves in the X-axis direction.
[0031]
With this configuration, the clamp 13 is moved in the X-axis direction and the Y-axis direction, and the workpiece W gripped by the clamp 13 is positioned at the punch center C.
[0032]
In this state, in the punch center C, an upwardly pressed down upward forming die D mounted on a desired mold, for example, the die mounting apparatus 60 according to the present invention. ₁ (FIG. 3A), that is, the first molding die D ₁ And the corresponding punch P ₁ Is selected, the die pressing device 19 is operated (FIG. 3B), the pressing plate 32 of the hollow member 31 is pressed by the lower ram 18, and the hollow member 31 is raised.
[0033]
Thereby, the first molding die D ₁ The whole is positioned so as to protrude upward from the pass line PL, and in this state, the upper ram 2 is operated (FIG. 1) to operate the punch P ₁ (FIG. 7C), the punch P ₁ The first molding die D positioned above the pass line PL by simultaneously pressing the workpiece W from above while pressing the upper surface of the workpiece W. ₁ A predetermined upward molding process is performed in cooperation with the above.
[0034]
Hereinafter, the die mounting apparatus 60 according to the present invention will be described in detail.
On the lower turret 7 (FIG. 2), a die holder 20 is installed via a lower holder 33, and an opening 23 is formed in the die holder 20.
[0035]
A plurality of grooves 25 are formed in the opening 23 in the vertical direction. A return spring 24 is built in the groove 25. The upper end of the return spring 24 is on the upper surface of the groove 25, and the lower end is described later. The die holders 22 are respectively attached to pins 27 protruding laterally from the die holder 22, thereby urging the die holder 22 downward.
[0036]
In this case, the die holding tool 22 inserted into the opening 23 can be the first molding die D even without an elastic member such as a return spring 24. ₁ If the lower ram 18 of the die pressing device 19 (FIG. 7 (D)) is lowered after the upward molding process (FIG. 7 (C)) is completed while holding the first die D ₁ And the gravity of the hollow member 31 and the pressing plate 32 return to the original position.
[0037]
However, even if the lower ram 18 is lowered, the die holder 22 may be caught in the opening 23 and not returned to the original position. In order to avoid this, the die holder 22 is The return spring 24 is preferably forcibly biased downward.
[0038]
A die hole 29 is formed in the die holder 22, and an annular protrusion 30 is provided inward at the bottom of the die hole 29, and a die D described later is provided on the annular protrusion 30. ₁ (Fig. 3) or D ₂ (Fig. 4) or D _Three (FIGS. 5 and 6) are seated.
[0039]
In this case, the die D held by the die holder 22 ₁ , D ₂ , D _Three As, for example, the above-described upward push-down forming die D ₁ The first molding die D ₁ (Fig. 3), upwardly upward forming die D ₂ The second forming die D ₂ (Fig. 4) or punching die D _Three (FIGS. 5 and 6).
[0040]
In the die holder 22, the first molding die D ₁ Is held (FIG. 3), as described above, the pressing plate 32 is left attached to the hollow member 31, but the second molding die D ₂ Is held (FIG. 4), this second forming die D ₂ Is a dedicated die for the die pressing device 19, and the second molding die D is introduced by allowing the lower ram 18 to enter the hollow member 31 (FIG. 4B). ₂ In order to push up only the die chip 41 from below, the pressing plate 32 is detached from the hollow member 31.
[0041]
Further, for example, the first molding die D is formed on the annular protrusion 30 formed in the die hole 29 (FIG. 3A) of the die holder 22. ₁ As shown in the figure, the first forming die D is ₁ Is set to a depth d from the upper end of the die hole 29 to the annular protrusion 30 so as to coincide with the pass line PL.
[0042]
For this reason, the first molding die D ₁ 2nd molding die D lower than ₂ (Fig. 4), punching die D _Three (FIG. 5), when inserting into the die hole 29 of the die holder 22 and seating on the annular protrusion 30, the second molding die D is interposed with a spacer 38 interposed. ₂ And punching die D _Three Is made to coincide with the pass line PL in advance (FIGS. 4A and 5).
[0043]
However, by using the die pressing device 19 (FIG. 6), the punching die D _Three Is made to coincide with the pass line PL without using the spacer 38, the punching die D _Three Is directly seated on the annular protrusion 30 of the die hole 29 and is held by the die holder 22 (FIG. 6A).
[0044]
In the die hole 29 (FIG. 2), a key groove 57 is formed, and the die D seated on the annular protrusion 30 is formed. ₁ , D ₂ , D _Three However, it does not rotate in the die holder 22 via the respective keys 54, 58, 59 (FIGS. 3 to 6).
[0045]
As described above, the die holder 22 (FIG. 2) is biased downward via the return spring 24 in contact with the pin 27, and the key 28 (FIG. 3 (A)) protruding sideward. The key groove 48 on the die holder 20 side prevents rotation and is guided in the vertical direction.
[0046]
Further, the lower holder 33 (FIG. 2) has a through hole 35 through which the hollow member 31 passes, and the hollow member 31 extends to, for example, an insertion hole 7A formed in the lower turret 7, Alternatively, it can be projected downward from the insertion hole 7A.
[0047]
The hollow member 31 is provided with a pressing plate 32 in a detachable manner at the lower end. As described above, for the die pressing device 19, a mold other than a dedicated mold, such as the first molding die D, is provided. ₁ It is used when the whole is raised and positioned above the pass line PL (FIG. 3B).
[0048]
Further, as described above, the hollow member 31 is a die other than the other dedicated die, for example, the die die D, for the die pressing device 19. _Three (FIG. 6) with the die holding tool 22 directly holding the punching die D _Three Is also used to match with the pass line PL (FIG. 6B).
[0049]
The hollow member 31 (FIG. 2) is constituted by, for example, a cylindrical pressure adapter. A flange 36 is provided on the upper surface of the pressure adapter 31, and a pressure is applied to the lower surface 40 opposite to the flange 36. A disc-shaped pressure plate constituting the plate 32 is detachably attached via bolts 34, 39, for example.
[0050]
A lower surface 36B of the flange 36 of the pressure adapter 31 is engaged with a stepped portion 37 formed in the upper portion of the through hole 35 of the lower holder 33, and an upper surface 36A of the flange 36 is connected to the lower surface of the die holder 22. Has been placed.
[0051]
With this configuration, when the pressing plate 32 attached to the hollow member 31 is pressed by the lower ram 18 of the die pressing device 19, the hollow member 31 leaves the stepped portion 37 of the lower holder 33 (FIG. 3B). The die holder 22 placed thereon rises against the restoring force of the return spring 24, for example, the first molding die D ₁ The whole is positioned above the pass line PL.
[0052]
The first forming die D ₁ As mentioned above, punch P ₁ (FIG. 7 (C)) is pressed downward from above to hold down the workpiece W and pressurize at the same time. In other words, both pressing and pressing of the workpiece W are performed by the punch P. ₁ It is an upward push-down upward forming die used for upward molding performed by the side.
[0053]
This first forming die D ₁ (FIG. 3A) has a die chip 49 formed integrally with the die body 50, and an ejector plate 51 is disposed around the die chip 49, and the ejector plate 51 is attached to the die body 50. On the other hand, it is urged upward by a return spring 44 described later, and is guided in the vertical direction by guide members 52 and 53.
[0054]
One guide member 52 abuts on the upper spring seat 42 directly below, whereby the ejector plate 51 is biased upward by the return spring 44, and the other guide member 53 is above the ejector plate 51. The upper limit position (FIG. 3A) at the time of urging is regulated, and the lower limit position (FIG. 7C) at the time of molding is regulated.
[0055]
A return spring 44 is interposed between the upper spring seat 42 (FIG. 3A) and the lower spring seat 61 below the upper spring seat 42, and the lower spring seat 61 is a bolt screwed into the lower portion of the die body 50. The bolt 43 passes through the lower spring seat 61, the return spring 44, and the upper spring seat 42.
[0056]
With this configuration, as described above, the lower ram 18 of the die pressing device 19 (FIG. 3B) presses the pressing plate 32 attached to the hollow member 31 to hold the first holding member 22 on the die holder 22. 1 Mold D ₁ After the whole is positioned above the pass line PL while contacting the lower surface of the workpiece W, the punch P ₁ When the workpiece W is pressed down while pressing down (FIG. 7C) from above, the ejector plate 51 on which the workpiece W is placed is pressed.
[0057]
As a result, the guide member 52 of the ejector plate 51 presses the upper spring seat 42, so that the return spring 44 is compressed, the ejector plate 51 is bent and the die chip 49 is exposed, and upward molding is performed.
[0058]
After processing (FIG. 7D), the punch P ₁ When the lower ram 18 is lowered at the same time as the ascent is raised, the first forming die D ₁ Is released, the hollow member 31 is locked to the stepped portion 37 of the lower holder 33, and the ejector plate 51 is biased upward by the restoring force of the return spring 44 to return to the original position.
[0059]
FIG. 4 is a diagram showing a second embodiment of the present invention. The difference from the first embodiment described above (FIG. 3) is the second molding die D. ₂ (FIG. 4A), as described above, is held by the die holder 22 via the spacer 38 so as to match the pass line PL, and the second forming die D ₂ The die holder 22 is left as it is, and only the die chip 41 is pushed up from below (FIG. 4B).
[0060]
Second molding die D ₂ As described above, the workpiece P is moved upward through the punch P. ₂ Die D that can push up the pressure of the workpiece W from below with the side pressed ₂ Upward molding performed by the side, in other words, pressing the workpiece W with the punch P ₂ Dies D pressurizes the workpiece W ₂ It is a downward push-up upward forming die used for upward molding performed by the side.
[0061]
This second forming die D ₂ (FIG. 4) has a die body 56 in which the base 26 is fixed by a bolt 26A, and the die chip 41 is movable up and down while being biased downward by a return spring 46 described later. It is attached.
[0062]
The lower limit position of the die chip 41 is regulated by the lower surface of the die chip 41 coming into contact with the upper surface of the base 26 (FIG. 4A).
[0063]
Further, the height when the die chip 41 is pushed up from below can be freely controlled by the lower ram 18 of the die pressing device 19 according to the height of the part to be molded, as described above. The upper end position of the die chip 41 is regulated by the base end portion 41A projecting laterally coming into contact with the ceiling of the concave portion 56A formed in the die body 56 (FIG. 4B).
[0064]
Further, a driver 47 is screwed into the lower portion of the die chip 41, and the driver 47 extends downward through the base 26 and a contact portion 55 fixed to the lower surface of the base 26. The spring seat 45 is fixed, and the return spring 46 described above is interposed between the contact portion 55 and the spring seat 45.
[0065]
With this configuration, as described above, the lower ram 18 of the die pressing device 19 (FIG. 4B) is connected to the hollow member 31 with the pressing plate 32 detached from the hollow member 31 (FIG. 4A). When it enters, the lower ram 18 presses the spring seat 45.
[0066]
As a result, the driver 47 attached to the spring seat 45 rises against the restoring force of the return spring 46, so that only the die chip 41 into which the driver 47 is screwed is pushed up from below, and the upper punch P ₂ The workpiece W pressed by is pressed from below by the die chip 41, and a predetermined upward forming process is performed.
[0067]
After processing, punch P ₂ Since the lower ram 18 descends at the same time as the ascent increases, the second molding die D ₂ The die chip 41 is urged downward by the restoring force of the return spring 46 and comes into contact with the base 26 of the die body 56 to return to the original position (corresponding to FIG. 4A).
[0068]
FIG. 5 is a diagram showing a third embodiment of the present invention. The difference from the first (FIG. 3) and second (FIG. 4) embodiments described above is that the die pressing device 19 (FIG. 3, FIG. 4) Punching die D without using _Three Is held by the die holder 22 via the spacer 38 and is made to coincide with the pass line PL.
[0069]
However, as is well known, since debris is generated from the workpiece during punching, the debris is accumulated in the hollow member 31 to which the pressing plate 32 is attached during processing, and the pressing plate is removed from the hollow member 31 after processing. By removing 32, the waste accumulated inside is discharged to the outside.
[0070]
Or if the press plate 32 in which the dregs hole 32A was formed as shown in the figure is attached to the hollow member 31, the dregs being processed will be discharged to the outside through this dregs hole 32A.
[0071]
FIG. 6 is a view showing a fourth embodiment of the present invention. The difference from the third embodiment (FIG. 5) described above is that the punching die D is used. _Three (FIG. 6 (A)), by directly holding the die holder 22 and using the die pressing device 19, the punching die D _Three Is matched with the pass line PL.
[0072]
In FIG. 6, when the pressing plate 32 is pressed with the lower ram 18 of the die pressing device 19 (FIG. 6B) with the pressing plate 32 attached to the hollow member 31 (FIG. 6A), the hollow member 31 is pressed. , The die holder 22 on the die and the punching die D held by the die holder 22 _Three As a result, the punching die D _Three Matches the pass line PL.
[0073]
Also in this case, as described in FIG. 5, when the punch is punched, debris is generated from the workpiece. This debris is accumulated in the hollow member 31 to which the pressing plate 32 is attached during the machining, and is removed from the hollow member 31 after the machining. By removing the pressing plate 32, the waste accumulated inside is discharged to the outside.
[0074]
The operation of the present invention having the above configuration will be described below with reference to FIG.
[0075]
(1) First operation (FIG. 7A).
First, the motor M is operated (FIG. 1) to rotate the upper turret 6 and the lower turret 7 synchronously, and the punch center C (FIG. 7A) is held by the die holder 22 of the die mounting apparatus 60 according to the present invention. For example, an upward pressing die D ₁ The first molding die D ₁ And the corresponding punch P ₁ And the X-axis motor (not shown) and the Y-axis motor My (FIG. 1) are driven to move the workpiece W gripped by the clamp 13 to position the punch center C (FIG. 7A). To do.
[0076]
At this stage, Punch P ₁ Is at the top dead center, and is waiting above the workpiece W as shown in the figure.
[0077]
A pressing plate 32 is attached to the hollow member 31.
[0078]
(2) Second operation (FIG. 7B).
Next, when the die pressing device 19 is operated (FIG. 7B) and the pressing plate 32 is pressed by the lower ram 18, the hollow member 31 is removed from the stepped portion 37 of the lower holder 33 as described above. Leave.
[0079]
As a result, the die holder 22 placed thereon rises against the restoring force of the return spring 24, whereby the first molding die D held by the die holder 22 is obtained. ₁ The whole is positioned above the pass line PL while abutting and lifting the workpiece W.
[0080]
(3) Third operation (FIG. 7C).
In this state, the upper ram 2 is operated (FIG. 1) to operate the punch P ₁ (FIG. 7C), the punch P ₁ However, by pressing the upper surface of the work W and simultaneously pressing the work W from above, the ejector plate 51 on which the work W is placed is pushed downward.
[0081]
As a result, the ejector plate 51 is moved down against the restoring force of the return spring 44 together with the guide members 52 and 53 attached integrally with the upper spring seat 42, and the ejector plate 51 is bent. Since the die chip 49 is exposed, the punch P pushed down from above ₁ A predetermined upward molding process is performed on the workpiece W pressurized to a predetermined pressure.
[0082]
(4) Fourth operation (FIG. 7D).
After the upward forming process is completed (FIG. 7D), the punch P ₁ Since the lower ram 18 descends simultaneously with the rise of the first molding die D held by the die holder 22 ₁ Is released from the force constraint and returns to its original position.
[0083]
That is, when the lower ram 18 that has been pressing the pressing plate 32 is lowered, the die holder 22 placed on the hollow member 31 to which the pressing plate 32 is attached causes the restoring force of the return spring 24 to be restored. The hollow member 31 is locked to the stepped portion 37 of the lower holder 33 accordingly.
[0084]
Further, since the ejector plate 51 once lowered together with the die holder 22 loses the force of pressing from above by being lowered, the restoring force of the return spring 44 causes the upper spring seat 42 together with the guide members 52 and 53. Then, it is biased upward and returns to its original position.
[0085]
In this way, a desired upward molding process is performed by repeating the operations of FIGS. 7 (A) to 7 (D).
[0086]
In the present embodiment, the turret punch press having the die pressing device 19 (FIG. 1) has been described in detail. However, the present invention is not limited to this, and the upward pressing down forming die D ₁ A turret having a die vertical movement device (corresponding to the hydraulic servo cylinder 103 provided with the piston rod 101 shown in FIGS. 1 and 2B of the Japanese Patent Laid-Open No. 4-100645) using (FIG. 3) a dedicated die. Also for the punch press, according to the die mounting device 60 according to the present invention, this die up-and-down moving device is a die other than a dedicated die, for example, a downward push-up upward forming die D ₂ It is possible to push up only the die chip 41 shown in FIG. 4 and, of course, the same operations and effects can be achieved.
[0087]
【The invention's effect】
As described above, according to the present invention, the die pressing device or the die up-and-down moving device can be applied to a die other than the dedicated die as it is, thereby expanding the use range of the die in the punch press, There is an effect of improving the utilization efficiency of the mold.
[0088]
[Brief description of the drawings]
FIG. 1 is an overall view of the present invention.
FIG. 2 is a perspective view showing an embodiment of the present invention.
FIG. 3 is a diagram showing a first embodiment of the present invention.
FIG. 4 is a diagram showing a second embodiment of the present invention.
FIG. 5 is a diagram showing a third embodiment of the present invention.
FIG. 6 is a diagram showing a fourth embodiment of the present invention.
FIG. 7 is an operation explanatory diagram of the present invention.
[Explanation of symbols]
1 Upper frame
2 Upper ram
3 Drive shaft
4, 5 chain
6 Upper turret
7 Lower turret
8,9 Rotating shaft
10, 15 Side table
11 Carriage base
12 Carriage
13 Clamp
14 Ball screw
16 Support bracket
17 Y-axis guide
18 Lower ram
19 Die pressing device
20 Die holder
21 Lower frame
22 Die holder
23 Opening of die holder 20
24, 44, 46 Return spring
25 groove
26 base
27 pins
28 Key of die holder 22
29 Die hole
30 Annular protrusion
31 Hollow member
32 Press plate
33 Lower holder
34, 39, 43 bolts
35 Through hole
36 Flange
37 steps
38 Spacer
40 Lower surface of the hollow member 31
41, 49 Die chip
42 Upper spring seat
45 Spring seat
47 Driver
48 Keyway of die holder 20
50, 56 Die body
51 Ejector plate
52, 53 Guide member
54, 58, 59 Predetermined die D ₁ , D ₂ , D _Three key of
55 Contact part
57 Keyway of die holder 22
60 Die mounting device
61 Lower spring seat
D die
P punch
W Work

Claims (4)

In a punch press having a die pressing device or a die vertical movement device,
A die holder that can hold the die and is inserted into an opening formed in the die holder and guided in the vertical direction;
A hollow member placed and locked to the die holder;
A die mounting apparatus in a punch press comprising a pressing plate detachably provided at a lower end of the hollow member. The die mounting apparatus in a punch press according to claim 1, wherein the die holder is urged downward by an elastic member. 2. The punch according to claim 1, wherein the moving part of the die pressing device or the die up-and-down moving device is constituted by a lower ram at the tip of the piston rod of the cylinder, and the outer diameter of the lower ram is smaller than the inner diameter of the hollow member. Die mounting device for press. 2. A die mounting apparatus in a punch press according to claim 1, wherein a dreg hole is formed in the pressing plate.

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