JP2004154831A - Die apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To widen an application range of a turret punch press with die rotation mechanism by applying mechanism for preventing rising of scrap with air to a rotary mold by enabling air supply even when a die is located at any angles. <P>SOLUTION: For solving the above problem, a die apparatus is provided with rotatable die receivers 64 to mount respective die holders 23 attached with respective dies D having die holes 53 to punch a workpiece W. An annular groove 31a to circulate air A supplied from outside is provided on an outer side surface of the rotatable die receiver 64 and an air introduction part to introduce the air A is provided at a plurality of jet orifices 32 which are inclined downwardly toward a scrap exit hole 35 from the annular groove 31a. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention is applicable to a turret punch press having a mold rotating mechanism, in which air can be supplied no matter at which angle the mold is positioned. The present invention relates to a die device having an expanded application range.
[0002]
[Prior art]
Conventionally, a turret punch press has an upper turret 96 and a lower turret 97, for example, as shown in FIG. 13, a punch P is provided on the upper turret 96 via a punch holder 94, and a die holder is provided on the lower turret 97. The dies D are respectively attached through the 95.
[0003]
With this configuration, when the punch P is pressed by a striker (not shown), the punch P descends, and in cooperation with the die D, the work W gripped by the clamp 93 is punched, for example.
[0004]
Then, the punched waste W1 after punching falls naturally through the waste discharge hole 90, and is collected in an installed waste bucket or the like.
[0005]
After punching, the punch P rises and returns to the original position.
[0006]
[Problems to be solved by the invention]
[0007]
However, the scum W1 generated at the time of the punching (FIG. 13) may stick to the tip of the punch P, rise with the rising punch P, and adhere to the upper surface of the work W.
[0008]
As a result, the work W is scratched or the like, resulting in quality deterioration.
[0009]
As a mechanism for preventing such scum rising, for example, there is a mechanism provided with a cusp pusher at the tip of the punch P, or a mechanism using air (for example, Japanese Patent Application No. 2002-166876).
[0010]
However, among them, the mechanism for preventing the dregs from rising due to air is particularly when the die holder 95 to which the die D is attached is fixed, and cannot be applied to a rotatable die holder.
[0011]
That is, as is well known, the punch holder 94 and the die holder 95 are respectively mounted on a rotatable punch receiver and a die receiver, and a predetermined punch P and a die D having directionality in a punching shape are positioned at the punch center. Thereafter, the punch P and the die D may be rotated to a desired angle, and thereafter, the work W may be subjected to punching.
[0012]
However, in a turret punch press having such a mold rotating mechanism, conventionally, it is not possible to supply air for preventing dregs from rising, and therefore, it is not possible to discharge dregs W1 generated during processing, and as a result, air The application range of the dreg rise prevention mechanism is narrowed.
[0013]
In other words, in the related art, the mechanism for preventing the dregs from rising by air is applied only when the dies P and D are fixed, and is not applied when the dies P and D are rotatable.
[0014]
An object of the present invention is to provide a turret punch press having a mold rotating mechanism, in which air can be supplied regardless of the position of the mold at any angle, so that a mechanism for preventing dregs rising due to air can be applied to a rotating mold. It is to expand the scope of application by making it applicable.
[0015]
[Means for Solving the Problems]
In order to solve the above problems, the present invention, as shown in FIGS.
In a die device in which a die D having a die hole 53 for punching a workpiece W is attached to a die holder 23, and the die holder 23 is attached to a rotatable die receiver 64,
An annular groove 31a for circulating air A supplied from the outside is provided on the outer surface of the rotatable die receiver 64, and a plurality of injection ports inclined downward from the annular groove 31a toward the waste discharge hole 35. A means called a die device is provided, wherein an air introduction section for introducing air A is provided at 32.
[0016]
Therefore, according to the configuration of the present invention, by providing the annular groove 31 a on the outer surface of the rotatable die receiver 64, for example, a plurality of ejector pipes 33 inserted into the opening 41 of the die receiver 64 are provided. When the injection port 32 is provided (FIGS. 6 to 8), the horizontal through hole 31b of the die receiver 64 communicating with the annular groove 31a, and the ejector communicating with the horizontal through hole 31b and the plurality of injection ports 32. If the air introduction portion is constituted by the annular groove 31c on the outer surface of the pipe 33, the air A supplied from the outside will be no matter what angle (for example, α) (FIG. 8A) the die D is positioned at. Injecting from the plurality of injection ports 32 through the air introduction portion from the annular groove 31a and converging at, for example, the position E in the ejector pipe 33, a negative pressure is generated below the die hole 53. , Die hole 5 Air B is sucked from the outside through the by scum W1 generated during workpiece W machined is sucked strongly, it is discharged to the outside.
[0017]
Therefore, according to the present invention, in the turret punch press having the mold rotating mechanism (FIG. 5), the air A can be supplied regardless of the positions of the molds P and D at any angle. The scrap lifting mechanism can also be applied to a rotary mold, and the applicable range can be expanded.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
[0019]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an overall view showing an embodiment of the present invention.
[0020]
The turret punch press shown in FIG. 1 has an upper turret 6 and a lower turret 7, and each of the upper turret 6 and the lower turret 7 includes a plurality of punches P and dies D via a punch holder 22 and a die holder 23. The mold is located.
[0021]
As shown, chains 4 and 5 are wound around a rotation shaft 8 of the upper turret 6 and a rotation shaft 9 of the lower turret 7, and the chains 4 and 5 are wound around the drive shaft 3. Have been.
[0022]
With this configuration, when the drive shaft 3 is rotated by operating the motor M and the chains 4 and 5 are circulated, the upper turret 6 and the lower turret 7 are rotated synchronously, and a desired one of the plurality of dies is selected. The die can be selected at the punch center C.
[0023]
In the turret punch press shown in FIG. 1, the turrets 6 and 7 are rotated, and first, for example, a die for three tracks in a radial direction including a desired die is positioned at the punch center C.
[0024]
Thereafter, the striker cylinder 21 described later is further driven to position the striker 2 at any of the corresponding track positions C1, C2, and C3, and the punch P of the die selected by the positioned striker 2 is pressed. The work W is punched in cooperation with the die D.
[0025]
The striker 2 can be positioned in the Y-axis direction at the punch center C, and the striker 2 is slidably coupled to a ram 20 and coupled to a striker cylinder 21 attached to the outer surface thereof. The ram cylinder 19 provided on the frame 1 moves up and down.
[0026]
With this configuration, when the striker cylinder 21 is driven, the striker 2 can be positioned at the track position C1, C2, or C3 immediately above the molds P, D to be selected. When the ram 20 is driven, the ram 20 descends, and as described above, the striker 2 presses the selected punch P to perform predetermined punching.
[0027]
In this case, in which track position C1, C2, C3 the striker 2 is positioned depends on the number of tracks which is the number of the dies P, D mounted on the holders 22, 23, and in the case of three tracks, ( 2) Any one of the three track positions C1, C2, C3, and in the case of two tracks (FIG. 3), any one of the outer and inner two track positions C1, C3, In the case of a track (FIG. 4), it is positioned at the middle track position C2. .
[0028]
On the other hand, a disc support 24 is provided below the lower turret 7 in the punch center C, and receives the pressure received by the turret 7 when the striker 2 presses the punch P.
[0029]
On the upper surface of the disk support 24, a number of air supply ports 28 corresponding to the number of radial dies P and D selectable in the punch center C are provided.
[0030]
For example, as shown, when one of three dies in the radial direction for three tracks can be selected at the punch center C, the three air supply ports 28 (FIG. 1) Is provided on the upper surface.
[0031]
The three air supply ports 28 are connected to a switching valve 34 (for example, a solenoid valve) through a branch pipe 27, and the switching valve 34 is connected to an air source 25 through a main pipe 26.
[0032]
With this configuration, when the striker position control unit 50D configuring the NC device 50 described later detects the track positions C1, C2, and C3 of the striker 2 based on the feedback signal from the encoder of the striker cylinder 21, the track position C1 , C2, C3, the switching valve 34 is switched so that only the corresponding one of the three air supply ports 28 can be connected to the air source 25.
[0033]
At a position on the lower surface of the lower turret 7 corresponding to a position directly above the air supply port 28 of the disk support 24, an air introduction port 29 communicating with an injection port 32 (for example, FIG. 6) described later is provided.
[0034]
The air inlets 29 are provided for each die holder 23 as described later, and the number of air inlets 29 provided for each die holder 23 depends on the number of dies D mounted on the die holder 23, that is, Corresponds to the number.
[0035]
For example, in FIGS. 1 and 2, one of the three dies in the radial direction for three tracks can be selected, whereby each die holder 23 on the lower turret 7 (FIG. 2) has a track T1. , T2, and T3, a die D is mounted in the radial direction.
[0036]
In this manner, three air introduction ports 29 are provided at positions on the lower surface of the lower turret 7 and directly above the air supply ports 28, corresponding to the three dies D attached to the die holder 23. Are provided for each die holder 23.
[0037]
When one of the dies P and D for two tracks T1 and T2 (FIG. 3) can be selected, the three air supply ports 28 on the upper surface of the disk support 24 and the lower surface of the lower turret 7 The upper air inlets 29 are two.
[0038]
Further, when only the dies P and D for one track T (FIG. 4) can be selected, the air inlets 29 on the lower surface of the lower turret 7 correspond to the three air supply ports 28 on the upper surface of the disk support 24. Is one.
[0039]
With this configuration, when the turrets 6 and 7 are synchronously rotated (FIG. 1) and the die holder 23 on which one die D to be selected is mounted is positioned at the punch center C, the three air supply ports 28 on the upper surface of the disk support 24 For example, one air introduction port 29 on the lower surface of the lower turret 7 is positioned just above the uppermost air supply port 28 in FIG. Are connected to the air source 25 (FIG. 1).
[0040]
Further, in the case of one track, the punch P and the die holder 23 on which the punch P and the die D are mounted may be rotatable, so that the punch P and the die D positioned at the punch center C are desired. According to the present invention, the punch P and the die D can be positioned at any angle, as described later (FIGS. 6 to 8 and 9 to 12). , Air A can be supplied, and thereby, it is possible to prevent waste from rising due to air.
[0041]
In this case, the punch holder 22 and the die holder 23 are attached to the punch receiver 63 and the die receiver 64 provided on the upper turret 6 (FIG. 5) and the lower turret 7, and the outer periphery of the punch receiver 63 and the die receiver 64 Worm wheels 65 and 66 are provided, and the worm wheels 65 and 66 mesh with the worms 67 and 68.
[0042]
On the upper turret 6 and the lower turret 7, as shown, two punch receivers 63 and die receivers 64 are respectively arranged facing each other, and the worms 67 and 68 of the two punch receivers 63 and the die receiver 64 are located on the outside thereof. The clutches 71B and 72B are mounted on the inside, and the inside is connected by connecting shafts 71 and 72 having universal joints 71A and 72A and brakes 73 and 74 for suppressing vibration.
[0043]
In FIG. 5, the driven clutches 71B and 72B of the front worms 67 and 68 are opposed to the driving clutches 75B and 76B, and the driving clutches 75B and 76B are, as well known, an intermediate clutch. The drive units 75 (for example, cylinders) and 76 can freely engage and disengage with the driven clutches 71B and 72B. Behind the intermediate drive units 75 and 76, a rotary drive unit 79 (for example, A rotary drive device using a motor as a drive source is provided.
[0044]
With this configuration, when the corresponding punch P and die D are positioned at the punch center C, the cylinders 75 and 76 are driven, and the transmission shafts 86 and 87 coupled thereto project to project the transmission gears G5 and G7. Sliding on the intermediate gears G4, G6 longer in the Y-axis direction, the drive-side clutches 75B, 76B at the tips of the transmission shafts 86, 87 are engaged with the driven-side clutches 71B, 72B.
[0045]
If the motor 79 is driven in this state, the rotational motion of the drive shaft 81 is transmitted from the gear G1 at the tip thereof to the input shafts 77, 78 with universal joints 77A, 78A via the up-down gears G2, G3, The rotational movement of the input shafts 77 and 78 is transmitted to the intermediate shafts 84 and 85 through the timing belts 82 and 83, and further transmitted to the transmission shafts 86 and 87 via the intermediate gears G4 and G6 and the transmission gears G5 and G7. As described above, the transmission is transmitted from the engaged clutches 75B and 71B and 76B and 72B to the connection shafts 71 and 72.
[0046]
As a result, the worms 67 and 68 rotate, and the worm wheels 65 and 66 meshing with the worms also rotate, so that the punch receiver 63 and the die receiver 64 also rotate, and the punch P and the die D can be rotated to desired angles. it can.
[0047]
FIG. 6 shows a first embodiment of the present invention, and FIG. 9 shows a second embodiment of the present invention. The former is for a small diameter (for example, 1/4 inch), and the latter is for a large diameter (for example, 2 inch). In FIGS. 6 and 9, a communication pipe 30 extends upward from the air introduction port 29 on the lower turret 7, penetrates the lower turret 7, and enters an annular groove 31a described later.
[0048]
In FIG. 6, a die holder 23 to which a die D is attached via a key 56 and a key groove 57 is screwed to a rotatable die receiver 64 having the worm wheel 66, and an outer surface of the die receiver 64 , An annular groove 31a is provided.
[0049]
The flange of the ejector pipe 33 on which the die D is mounted is engaged with the shoulder 40A of the insertion hole 40 of the die receiver 64, and the ejector pipe 33 extends downward, and the opening 41 of the die receiver 64, The waste pipe 35 is formed concentrically with the opening 42 of the lower turret 7, the opening 43 of the disc support 24, and the opening 44 of the lower frame 18, so that the ejector pipe 33 is well known. As described above, the die D is pushed up when the mold is changed.
[0050]
The die holder 23 to which the die D placed on the ejector pipe 33 is mounted, the die receiver 64, the worm wheel 66, and the ring member 80 are mounted on the lower turret 7 as shown in FIG. 70.
[0051]
The annular groove 31a provided on the outer surface of the die receiver 64 is closed by a ring member 80 fixed to the lower turret 7, whereby an annular air passage is formed. It communicates with a communication tube 30 connected to the source 25 (FIG. 1).
[0052]
The annular groove 31a on the outer surface of the die receiver 64 is provided with a hole 31b penetrating between the die receiver 64 and the opening 41 in the horizontal direction.
[0053]
For example, two horizontal through holes 31b are provided (FIG. 6A), and each horizontal through hole 31b communicates with an annular groove 31c on the outer surface of the ejector pipe 33, and an ejector is provided in the annular groove 31c. A plurality of injection ports 32 inclined downward toward the inside of the pipe 33 are formed.
[0054]
With this configuration, after positioning the punch P and the die D at the punch center C, the punch receiver 63 and the die receiver 64 are rotated, so that, for example, the die D is rotated by a desired angle α (FIG. 8A). .
[0055]
Then, when processing is started in this state, the air A circulates through the communication pipe 30 in the annular groove 31a of the die receiver 64 rotated by the desired angle α.
[0056]
Thus, no matter what angle α (FIG. 8 (A)) the die receiver 64 and thus the die D is positioned, the air A supplied from the outside flows from the annular groove 31a of the die receiver 64 to the die receiver 64. Through the two horizontal through holes 31b into the annular groove 31c of the ejector pipe 33, and is ejected from the plurality of ejection ports 32 into the inside of the ejector pipe 33.
[0057]
As a result, the air A injected from the injection port 32 (FIG. 8B) converges at the position E in the ejector pipe 33, so that a negative pressure is generated below the die hole 53, and the negative pressure is generated. Based on this, external air B is sucked through the die hole 53.
[0058]
Therefore, the waste W1 generated during the processing of the work W (FIG. 6B) is strongly sucked downward from the die hole 53, and is forcibly discharged to the outside through the waste discharge hole 35 from the waste hole 45. This prevents dust from rising.
[0059]
FIG. 9 shows the second embodiment of the present invention as described above, and differs from the first embodiment of FIG. 6 in that the die holder 23 to which the die D is mounted is mounted on the rotatable die receiver 64 and the annular groove is formed. The nozzle member 46 is incorporated in the die D, and the plurality of injection holes 32 are provided in the nozzle member 46, which is common in that the outer surface of the die receiver 64 is provided with the nozzle 31a. The point that the introduction part for introducing the air A from 31a to the injection port 32 is directed upward (FIG. 12 (B)), and further that the duct 49 is provided on the lower surface of the nozzle member 46, Mainly different.
[0060]
Thereby, as is well known, the negative pressure generating position F is brought closer to the die hole 53 of the die D, the negative pressure is further increased, and the air B sucked from outside through the die hole 53 is sucked. By increasing the force, a large rise of the waste W1 is prevented.
[0061]
That is, the nozzle member 46 is incorporated into the die D of FIG. 9 via the shielding plate 51, and a duct 49 is attached to the nozzle member 46, and the duct 49 has a height almost half that of the ejector pipe 33. To the position.
[0062]
The nozzle member 46 has, for example, a flat cylindrical shape (FIGS. 10 and 11), and has a die hole 53 and a discharge hole 47 communicating with a through hole 54 of a shielding plate 51 described later. Have been.
[0063]
A T-shaped groove 31 is formed on both sides of the discharge hole 47 (FIGS. 11 and 12 (A)) and on the upper surface 46A of the nozzle member 46, and the T-shaped groove 31 is formed by the air described above. It constitutes a part of an introduction portion for introducing air A from the circulation path 80 to an injection port 32 described later.
[0064]
The T-shaped groove 31 (FIG. 12 (A)) is constituted by a portion 31A provided near and parallel to the discharge hole 47 and a portion 31B communicating with the parallel portion 31A and extending outward at right angles thereto. Have been.
[0065]
As shown in the drawing, a plurality of injection ports 32 are formed in the parallel portion 31A in the longitudinal direction, and each injection port 32 is inclined downward toward the discharge hole 47.
[0066]
The outer periphery of the upper surface 46A of the nozzle member 46 (FIG. 11) has a step and is lower by one step as shown in the figure, and an annular air passage 55 inclined downward is formed.
[0067]
The orthogonal portion 31B of the T-shaped groove 31 communicates with the annular air passage 55.
[0068]
On the other hand, the shielding plate 51 is made of, for example, nylon, and closes the T-shaped groove 31 and the outer air passage 55 by shielding the upper surface 46A of the nozzle member 46. The nozzle member 46 has a function of making it closely adhere to the wall surface of the waste hole 45, and a through hole 54 having an opening substantially the same size as the opening of the discharge hole 47 of the nozzle member 46 is formed at the center thereof.
[0069]
Further, the duct 49 is, for example, a rectangular parallelepiped tube as a whole, and its opening is slightly larger than the opening of the discharge hole 47 of the nozzle member 46, and brackets 52 are attached to both sides.
[0070]
As described above, the duct 49 focuses the air A injected from the plurality of injection ports 32 at the position F (FIG. 12B) and generates a large negative pressure generated around the position F. By concentrating the external air sucked from the die hole 53 based on the negative pressure in a narrow area, the suction force is strengthened, and a function of passing the waste W1 sucked by the enhanced suction force is provided. .
[0071]
On the other hand, also in the case of FIG. 9, similarly, an annular groove 31 a is provided on the outer surface of the die receiver 64 to which the die holder 23 is attached.
[0072]
The die receiver 64 is provided with an L-shaped through-hole 31d penetrating between the annular groove 31a and the upper surface 64A, and the L-shaped through-hole 31d is provided on a vertical portion of the flange of the ejector pipe 33. The vertical through hole 31e communicates with the inverted L-shaped through hole 48 provided in the die D, and the inverted L-shaped through hole 48 is connected to, for example, the left side as described above. It communicates with an orthogonal portion 31B of the T-shaped groove 31 (FIG. 12A).
[0073]
According to this configuration, after positioning the punch P and the die D at the punch center C, the punch receiver 63 and the die receiver 64 are rotated, so that, for example, the die D is rotated by a desired angle α ′ (FIG. 12A). I do.
[0074]
When the processing is started in this state, the air A circulates through the communication pipe 30 in the annular groove 31a of the die receiver 64 rotated by the desired angle α ′.
[0075]
Thus, no matter what angle α '(FIG. 12A) of the die receiver 64 and thus the die D is positioned, the air A supplied from the outside circulates through the annular groove 31a of the die receiver 64. After going upward through the L-shaped through hole 31d of the die receiver 64 (FIG. 12B) and entering the vertical through hole 31e of the flange of the ejector pipe 33, the inverted L-shaped through hole of the die D is formed. From 48, the liquid passes through the T-shaped groove 31 on the nozzle member 46 and is jetted from a plurality of jets 32.
[0076]
In this case, the air A that has entered from the inverted L-shaped through hole 48 of the die D (FIG. 12A), on the other hand, passes through the orthogonal portion 31B of the T-shaped groove 31 on the left side and becomes parallel to the parallel portion 31A. And is injected from a plurality of injection ports 32. On the other hand, after circulating through the annular air passage 55 and passing through the orthogonal portion 31B of the T-shaped groove 31 on the right side, it enters the parallel portion 31A. It is injected from the individual injection ports 32.
[0077]
As a result, as described above, the air A injected from the injection ports 32 on both sides of the discharge hole 47 (FIG. 12B) of the nozzle member 46 is located immediately below the outlet of the discharge hole 47 and the duct A Since the light is focused on the position F in the inside of the die 49, a large negative pressure is generated below the die hole 53.
[0078]
Therefore, based on this large negative pressure, a large amount of external air B is sucked through the die hole 53, and the large amount of air B passes through the through hole 54 of the shielding plate 51 and the discharge hole 47 of the nozzle member 46. After that, it concentrates in the duct 49 and passes through it.
[0079]
As a result, the waste W1 generated during the processing of the work W (FIG. 9B) is strongly sucked downward from the die hole 53, so that the through hole 54 of the shielding plate 51, the discharge hole 47 of the nozzle member 46, and the duct. Even if a large waste W1 formed by a large-diameter mold is forcibly discharged to the outside through the outside 49, it is easy to prevent the waste from rising.
[0080]
When the nozzle member 46 is incorporated into the die D (FIG. 11), as is well known, the shielding plate 51 is placed on the upper surface 46A of the nozzle member 46 and the through hole 54 is discharged from the nozzle member 46. With the shielding plate 51 in contact with the ceiling of the waste hole 45 of the die D and the inlet of the duct 49 aligned with the outlet of the discharge hole 47 of the nozzle member 46, the bracket 52 is connected to the nozzle member 46. Make contact with the lower surface.
[0081]
In this state, the bolt 60 is passed through the holes 58 and 59 from below the nozzle member 46 and screwed into the ceiling of the waste hole 45 of the die D. If screwed into the lower surface of the member 46, the nozzle member 46 can be assembled in the die D by closely attaching the nozzle member 46 to the wall surface of the waste hole 45 with the duct 49 attached with the shielding plate 51 interposed.
[0082]
Thereby, for example, the entrance of the orthogonal portion 31B constituting the left T-shaped groove 31 (FIG. 12 (B)) communicates with the inverted L-shaped through hole 48 of the die D, and the shielding plate 51 The T-shaped groove 31 on both sides of the discharge hole 47 is closed, and the annular air passage 55 on the outer periphery of the nozzle member 46 is closed by the shielding plate 51 and the wall surface of the waste hole 45 of the die D.
[0083]
The workpiece W from which the waste W1 is sheared is gripped by a clamp 13 (FIG. 1) during processing, and the clamp 13 is attached to the carriage 12.
[0084]
The carriage 12 is attached to the carriage base 11 via an X-axis guide rail 16, and the carriage 12 is screwed with a ball screw 15 of an X-axis motor Mx.
[0085]
The carriage base 11 is slidably connected to a Y-axis guide rail 17 on a lower frame 18, and a ball screw 14 of a Y-axis motor My is screwed to the carriage base 11.
[0086]
With this configuration, when the X-axis motor Mx and the Y-axis motor My are operated, the carriage 12 moves on the carriage base 11 in the X-axis direction, and the carriage base 11 moves in the Y-axis direction. The work W gripped by the attached clamp 13 can be transported on the processing table 10 and positioned at the punch center C. For example, punching is performed.
[0087]
The control device of the turret punch press having the above configuration is constituted by an NC device 50 (FIG. 1). The NC device 50 includes a CPU 50A, a processing control unit 50B, a turret rotation control unit 50C, and a mold rotation control unit. 50D, a striker position control unit 50E, an input / output unit 50F, a storage unit 50G, and a work positioning control unit 50H.
[0088]
The CPU 50A is a subject of determination of the NC device 50, and integrally controls the entire device shown in FIG. 1, such as the processing control unit 50B, the turret rotation control unit 50C, and the mold rotation control unit 50D.
[0089]
The processing control unit 50B operates the ram cylinder 19 to lower the striker 2 positioned at the predetermined track positions C1, C2, and C3, thereby pressing the selected punch P and pressing the corresponding die D The work W is cooperated to perform a predetermined processing. During the processing, the air source 25 is operated, and the air A is supplied through an air supply port 28 connected to the air source 25.
[0090]
The turret rotation control unit 50C operates the motor M to synchronously rotate the turrets 6 and 7 around the turret center R, and moves the holders 22 and 23 on which the desired molds P and D to be selected are attached to the punch center C. Position.
[0091]
After the desired dies P and D are positioned at the punch center C, the die rotation control unit 50D operates the motor 79 (FIG. 5) to rotate the punch receiver 63 and the die receiver 64, thereby The molds P and D are rotated to a desired angle.
[0092]
The striker position control unit 50E operates the striker cylinder 21 to position the striker 2 at the predetermined track positions C1, C2, and C3, and based on the feedback signal from the encoder of the striker cylinder 21 as described above. The switching valve 34 is switched in accordance with the track positions C1, C2, C3 of the striker 2, and only the corresponding air supply port 28 on the upper surface of the disc support 24 is connected to the air source 25.
[0093]
The input / output unit 50F inputs a processing program, data, and the like using a key, a mouse, or the like, and confirms the input on a screen.
[0094]
The work positioning control unit 50H operates the X-axis motor Mx and the Y-axis motor My to position the work W gripped by the clamp 13 at the punch center C.
[0095]
Hereinafter, the operation of the present invention having the above configuration will be described.
[0096]
For example, when a work W is carried into the turret punch press (FIG. 1) from a work carry-in / out device (not shown), the CPU 50A that detects the work W controls the work positioning control unit 50G to control the X-axis motor Mx and the Y-axis. The motor My is driven to position the workpiece W held by the clamp 15 at the punch center C.
[0097]
Next, the CPU 50A operates the motor M via the turret rotation control unit 50C to synchronously rotate the turrets 6 and 7 so that the holders 22 and 23 on which the desired molds P and D to be selected are mounted. It is positioned at the punch center C.
[0098]
Thereafter, the CPU 50A operates the motor 79 (FIG. 5) via the mold rotation control unit 50D to rotate the punch receiver 63 and the die receiver 64, thereby setting the dies P and D to a desired angle, for example, α (FIG. 8). (A)) or α ′ (FIG. 12A).
[0099]
Next, the CPU 50A operates the striker cylinder 21 via the striker position control unit 50E to position the striker 2 at the predetermined track positions C1, C2, C3 of the dies P, D to be selected, and then sets the processing control unit. By controlling 50B, the ram cylinder 19 is operated to lower the positioned striker 2, the selected punch P is pressed, and the workpiece W is subjected to predetermined processing in cooperation with the corresponding die D. .
[0100]
For example, in the case of one track as in the present invention (FIGS. 6 and 9), as described above, the striker 2 is positioned at the middle track position C2, and if the ram cylinder 19 is operated in this state. The work W is punched (FIG. 6B, FIG. 9B) by the cooperation of the punch P and the die D, and the waste W1 is generated.
[0101]
At the same time, the CPU 50A (FIG. 1) controls the striker position controller 50E to switch the switching valve 34 in accordance with the track position C2 of the striker 2 based on a feedback signal from the encoder of the striker cylinder 21. As described above (FIG. 4), only the corresponding air supply port 28 on the upper surface of the disk support 24 is connected to the air source 25 (FIG. 1).
[0102]
Thereby, the air A supplied from the corresponding air supply port 28 (FIGS. 6B and 9B) connected to the air source 25 passes through the communication pipe 30 from the air introduction port 29. Circulate through the annular groove 31a of the die receiver 64 rotated by a desired angle α (FIG. 8A) or α ′ (FIG. 12A).
[0103]
Thus, no matter what angle α, α ′ the die receiver 64, and thus the die D is positioned at, the air A supplied from the outside passes through the above-described introduction section from the air circulation path 80. (FIG. 8 (B) or FIG. 12 (B)), the negative pressure generated below the die hole 53 because it is injected from the plurality of downwardly inclined injection ports 32 and converges at the position E or F. Accordingly, the air B is sucked from the die hole 53, and the waste W1 generated during the processing of the work W is forcibly discharged to the outside by being strongly sucked below the die hole 53.
[0104]
【The invention's effect】
As described above, according to the present invention, in a die device in which a die having a die hole for punching a work is attached to a die holder, and the die holder is attached to a rotatable die receiver, an outer surface of the rotatable die receiver is provided. In addition, by providing an annular groove for circulating air supplied from the outside, from the annular groove, by providing an air introduction portion for introducing air to a plurality of injection ports inclined downward toward the waste discharge hole, In a turret punch press with a mold rotation mechanism, air can be supplied regardless of the position of the mold at any angle. This has the effect of expanding the range.
[0105]
[Brief description of the drawings]
FIG. 1 is an overall view showing an embodiment of the present invention.
FIG. 2 is a diagram showing a relationship between an air supply port 28 of a disk support 24 and an air introduction port 29 of a lower turret 7 constituting the present invention (in the case of a three-track system).
FIG. 3 is a diagram showing a relationship between an air supply port 28 and an air introduction port 29 in a two-track system.
FIG. 4 is a diagram showing a relationship between an air supply port and an air introduction port 29 in the case of a one-track system.
FIG. 5 is a view showing a mold rotating mechanism used in the present invention.
FIG. 6 is a view showing the first embodiment of the present invention (in the case of molds P and D of 1 ・ inch).
FIG. 7 is a view showing an air introduction unit of FIG. 6;
FIG. 8 is an operation explanatory view of FIG. 6;
FIG. 9 is a view showing a second embodiment of the present invention (in the case of 2-inch molds P and D).
FIG. 10 is a view showing an air introduction unit of FIG. 9;
11 is a view showing a relationship among a die D, a shielding plate 51, a nozzle member 46, and a duct 49 in FIG.
FIG. 12 is an operation explanatory view of FIG. 9;
FIG. 13 is a general explanatory view of a conventional turret punch press.
[Explanation of symbols]
Reference Signs List 1 upper frame 2 striker 3 drive shaft 4, 5 chain 6 upper turret 7 lower turret 8, 9 rotating shaft 10 table 11 carriage base 12 carriage 13 clamp 14, 15 ball screw 16 X-axis guide rail 17 Y-axis guide rail 18 Lower frame 19 Ram cylinder 20 Ram 21 Strike cylinder 22 Punch holder 23 Die holder 24 Disk support 25 Air source 26 Main pipe 27 Branch pipe 28 Air supply port 29 Air introduction port 30 Communication pipe 31 T-shaped grooves 31a, 31c Annular groove 32 Injection port 33 ejector pipe 34 switching valve 35 waste discharge hole 40 die insertion hole 41 opening 42 of die holder 23 opening 43 of lower turret 7 opening 44 of disk support 24 opening 45 of lower frame 18 waste hole 46 of die D nozzle member 47 no Air inlet 49 ducts formed in the discharge hole 48 die D of the seal member 46 50 NC apparatus 50A CPU
50B Machining control unit 50C Turret rotation control unit 50D Die rotation control unit 50E Striker position control unit 50F Input / output unit 50G Storage unit 50H Work positioning control unit 51 Shield plate 52 Bracket 53 of duct 49 Die hole 54 Through hole of shield plate 51 55 annular air passage 56 key 57 key groove 58, 59, 62 hole 60, 61 bolt 63 punch receiver 64 die receiver 65 worm wheel 66 of punch receiver 63 worm wheel 67 of die receiver 64 worm 68 which engages with worm wheel 65 worm wheel 66 Worm 70 Housing 71, 72 Connecting shaft 73, 74 Brake 75, 76 Intermediate drive 77, 78 Input shaft 79 Rotation drive 80 Ring member 81 Drive shaft 82, 83 Timing belt 84, 85 Intermediate shaft 86, 87 Conduction Air C punch center D die E, focusing position of F air A P Punches R turret center W workpiece W1 scrap from air B outside from A air source 25

Claims (3)

In a die device in which a die having a die hole for punching a workpiece is attached to a die holder, and the die holder is attached to a rotatable die receiver, air supplied from outside is circulated on the outer surface of the rotatable die receiver. A die device, comprising: an annular groove to be provided; and an air introduction unit for introducing air from the annular groove to a plurality of injection ports inclined downward toward the waste discharge hole. When the die is placed on an ejector pipe inserted into an opening of a die receiver constituting a waste discharge hole, and a plurality of injection ports are provided in the ejector pipe, the air introduction unit is provided with a die. A horizontal through-hole provided in the die receiver communicating with the annular groove provided on the outer surface of the receiver, and an annular groove provided on the outer surface of the ejector pipe communicating with the horizontal through hole and the plurality of injection ports. The die apparatus according to claim 1, wherein the die apparatus is formed. The die is mounted on an ejector pipe inserted into an opening of a die receiver constituting a waste discharge hole, and a plurality of injection ports are provided above the ejector pipe and in a nozzle member incorporated in the die. When provided, the air introduction portion communicates with an annular groove provided on the outer surface of the die receiver, and has an L-shaped through hole provided in the die receiver, and an ejector pipe communicating with the L-shaped through hole. A vertical through-hole provided in the flange, an inverted L-shaped through-hole provided in the die communicating with the vertical through-hole, and a nozzle member communicating with the inverted L-shaped through-hole and the plurality of injection ports. 2. The die device according to claim 1, wherein the die device is constituted by a T-shaped groove provided on the upper surface.

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