JP4139995B2 - Die equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
INDUSTRIAL APPLICABILITY In the turret punch press having a mold rotation mechanism, air can be supplied even if the mold is positioned at any angle, so that the mechanism for preventing the residue from rising by air can be applied to the rotation mold. In this manner, the present invention relates to a die apparatus that expands the application range.
[0002]
[Prior art]
Conventionally, the turret punch press has an upper turret 96 and a lower turret 97, for example, as shown in FIG. 13, and the upper turret 96 has a punch P through a punch holder 94 and the lower turret 97 has a die holder. Each die D is attached via 95.
[0003]
With this configuration, when the punch P is struck by a striker (not shown), the punch P is lowered and, for example, the workpiece W held by the clamp 93 is punched out in cooperation with the die D.
[0004]
The punched waste W1 after punching naturally falls through the waste discharge hole 90 and is collected in a punched waste bucket or the like.
[0005]
Further, after punching, the punch P rises and returns to the original position.
[0006]
[Problems to be solved by the invention]
[0007]
However, the residue W1 generated at the time of punching (FIG. 13) sticks to the tip of the punch P, rises with the rising punch P, and may adhere to the upper surface of the workpiece W.
[0008]
As a result, the work W is scratched, causing quality deterioration.
[0009]
As a mechanism for preventing such an uplift, there are, for example, a mechanism in which a cusp pusher is provided at the tip of the punch P, and a mechanism using air (for example, Japanese Patent Application No. 2002-166876).
[0010]
However, among these, the mechanism for preventing the residue from rising due to air is particularly applicable when the die holder 95 to which the die D is attached is fixed, and is not applicable to a rotatable die holder.
[0011]
That is, as is well known, the punch holder 94 and the die holder 95 are respectively attached to the rotatable punch receiver and die receiver, and the predetermined punch P and die D having directionality in the punching shape are positioned at the punch center. Thereafter, the punch P and the die D may be rotated to a desired angle, and then the workpiece W may be punched.
[0012]
However, in the turret punch press having such a mold rotating mechanism, conventionally, air for preventing dregling cannot be supplied, so that dregs W1 generated during processing cannot be discharged. The range of application of the scum-up prevention mechanism due to is narrowed.
[0013]
In other words, conventionally, the mechanism for preventing the residue from rising by air is applied only when the molds P and D are fixed, and is not applied when the molds P and D are rotatable.
[0014]
An object of the present invention is to provide a turret punch press having a mold rotation mechanism that can supply air regardless of the angle of the mold, thereby providing a mechanism for preventing the residue from rising due to air. The purpose is to expand the scope of application.
[0015]
[Means for Solving the Problems]
In order to solve the above problems, the present invention, as shown in FIGS.
In a die apparatus 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.
The die D is placed on the ejector pipe 33 inserted in the opening 41 of the die receiver 64 that constitutes the waste discharging hole 35, An annular groove 31a that circulates 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. 32 is provided with a means called a die apparatus characterized in that an air introduction part for introducing air A is provided.
[0016]
Therefore, according to the configuration of the present invention, by providing the annular groove 31a 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 that communicates with the annular groove 31a, and the ejector that communicates with the horizontal through hole 31b and the plurality of injection ports 32. If the air introduction portion is configured by the annular groove 31c on the outer surface of the pipe 33, the air A supplied from the outside is positioned at any angle (for example, α) (FIG. 8A). Since the air is injected from the plurality of injection ports 32 through the air introduction portion from the annular groove 31a and converges 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 angles of the molds P and D. The residue raising prevention mechanism can be applied to a rotating mold, and the application range can be expanded.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
[0019]
Hereinafter, the present invention will be described with reference to the accompanying drawings by embodiments.
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 the upper turret 6 and lower turret 7 include a plurality of punches P and dies D via a punch holder 22 and a die holder 23. A mold is placed.
[0021]
The rotating shaft 8 of the upper turret 6 and the rotating shaft 9 of the lower turret 7 are wound with chains 4 and 5, respectively, as shown in the figure, and the chains 4 and 5 are wound around the drive shaft 3. Has been.
[0022]
With this configuration, when the motor M is operated to rotate the drive shaft 3 and the chains 4 and 5 are circulated, the upper turret 6 and the lower turret 7 rotate synchronously, and a desired one of the plurality of molds is selected. A mold 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, the dies for three tracks in the radial direction including the desired dies are positioned at the punch center C.
[0024]
Thereafter, a striker cylinder 21 described later is further driven to position the striker 2 at one 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 workpiece 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 the 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 and D to be selected. , When the ram 20 is lowered, as described above, the striker 2 hits the selected punch P to perform a predetermined punching process.
[0027]
In this case, the track position C1, C2, and C3 at which the striker 2 is positioned depends on the number of tracks that is the number of dies P and D mounted on the holders 22 and 23. FIG. 2) Any one of the three track positions C1, C2, C3. In the case of two tracks (FIG. 3), any one of the two outer and inner track positions C1, C3, 1 In the case of a track (FIG. 4), it is positioned at the middle track position C2. .
[0028]
On the other hand, in the punch center C, a disk support 24 is installed below the lower turret 7 so as to receive the pressure received by the turret 7 when the punch P is pressed by the striker 2.
[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, D selectable at the punch center C are provided.
[0030]
For example, as shown in the figure, when one of the 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) have the disc support 24. Is provided on the top surface.
[0031]
The three air supply ports 28 are coupled to a switching valve 34 (for example, a solenoid valve) through a branch pipe 27, and the switching valve 34 is coupled to an air source 25 through a main pipe 26.
[0032]
With this configuration, when the striker position control unit 50D constituting 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 is detected. By switching the switching valve 34 according to C2, C3, only the corresponding air supply port 28 among 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 will be described later. The number of air inlets 29 provided for each die holder 23 is equal to the number of dies D mounted on the die holders 23, that is, tracks. It corresponds to the number.
[0035]
For example, in FIG. 1 and FIG. 2, one of three dies in the radial direction for three tracks can be selected, so that each die holder 23 on the lower turret 7 (FIG. 2) has a track T1. , T2, and T3, a die D is attached in the radial direction.
[0036]
As described above, the three air introduction ports 29 are provided on the lower surface of the lower turret 7 corresponding to the three dies D attached to the die holder 23 and directly above the air supply port 28. Is provided for each die holder 23.
[0037]
Further, when one of the molds P and D for two tracks T1 and T2 (FIG. 3) is selectable, the lower surface of the lower turret 7 with respect to the three air supply ports 28 on the upper surface of the disk support 24. There are two upper air inlets 29.
[0038]
Further, when only the molds P and D for one track T (FIG. 4) can be selected, the air introduction port 29 on the lower surface of the lower turret 7 with respect 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 rotated synchronously (FIG. 1) and the die holder 23 to which one die D to be selected is attached is positioned at the punch center C, three air supply ports 28 on the upper surface of the disk support 24 are provided. For example, one air introduction port 29 on the lower surface of the lower turret 7 is positioned immediately above the uppermost air supply port 28 in FIG. 4 and only the uppermost air supply port 28 is positioned. Is connected to the air source 25 (FIG. 1).
[0040]
Further, in the case of one track, the punch holder 22 and the die holder 23 to which the punch P and the die D are attached 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, as will be described later (FIGS. 6 to 8 and FIGS. 9 to 12), the punch P and the die D can be positioned at any angle. , Air A can be supplied, and this can prevent debris from rising due to air.
[0041]
In this case, the punch holder 22 and the die holder 23 are attached to a punch receiver 63 and a die receiver 64 provided on the upper turret 6 (FIG. 5) and the lower turret 7. 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 in the figure, two punch receivers 63 and die receivers 64 are arranged to face each other, and the worms 67 and 68 of the two punch receivers 63 and die receivers 64 are arranged on the outer sides thereof. The clutches 71B and 72B are attached to the inner side, and the inner sides are connected by connecting shafts 71 and 72 having universal joints 71A and 72A and vibration suppressing brakes 73 and 74, respectively.
[0043]
In FIG. 5, the driven side clutches 71B and 72B of the worms 67 and 68 on the front side face the drive side clutches 75B and 76B, and the drive side clutches 75B and 76B are intermediate, as is well known. The drive units 75 (for example, cylinders) and 76 can be engaged and disengaged with respect to the driven side clutches 71B and 72B, and behind the intermediate drive units 75 and 76, as shown, a rotation drive unit 79 (for example, A rotary drive device using a motor as a drive source is installed.
[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 conductive shafts 86 and 87 coupled thereto project to project the conductive gears G5 and G7. It slides on the intermediate gears G4 and G6 that are longer in the Y-axis direction, and the drive side clutches 75B and 76B at the tips of the transmission shafts 86 and 87 engage with the driven side clutches 71B and 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 the universal joints 77A, 78A via the vertical 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 through the intermediate gears G4 and G6 and the transmission gears G5 and G7. As already described, the clutches 75B and 71B and 76B and 72B engaged with each other are transmitted to the connecting shafts 71 and 72.
[0046]
Accordingly, since the worms 67 and 68 rotate, the worm wheels 65 and 66 that mesh with the worms 67 and 68 also rotate, so that the punch receiver 63 and the die receiver 64 also rotate, and the punch P and die D can be rotated to a desired angle. 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 (eg, 1/4 inch) and the latter is for a large diameter (eg, 2 inch). 6 and 9, from the air inlet 29 on the lower turret 7, a communication pipe 30 extends upward, 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, An annular groove 31a is provided.
[0049]
The flange of the ejector pipe 33 on which the die D is placed is engaged with the shoulder 40A of the insertion hole 40 of the die receiver 64, the ejector pipe 33 extends downward, and the opening 41 of the die receiver 64, The ejector pipe 33 is well-known by being arranged concentrically with the waste discharge hole 35 formed by the opening 42 of the lower turret 7, the opening 43 of the disk support 24, and the opening 44 of the lower frame 18. As shown, the die D is pushed up when the mold is exchanged.
[0050]
The die holder 23 to which the die D placed on the ejector pipe 33 is attached, the die receiver 64, the worm wheel 66, and the ring member 80 are housed on the lower turret 7 as shown in the figure. 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, thereby forming an annular air passage, which is the air passage described above. The communication pipe 30 communicates with 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 in a horizontal direction between the opening 41 of the die receiver 64.
[0053]
For example, two horizontal through holes 31b (FIG. 6A) are provided, and each horizontal through hole 31b communicates with an annular groove 31c on the outer surface of the ejector pipe 33. The annular groove 31c includes an ejector. A plurality of injection ports 32 inclined downward toward the inside of the pipe 33 are formed.
[0054]
With this configuration, after the punch P and the die D are positioned at the punch center C, the punch receiver 63 and the die receiver 64 are rotated, for example, so that the die D is rotated by a desired angle α (FIG. 8A). .
[0055]
When machining is started in this state, air A circulates through the annular groove 31a of the die receiver 64 rotated through the communication tube 30 by a desired angle α.
[0056]
As a result, regardless of the angle α (FIG. 8A) at which the die receiver 64, and hence the die D is positioned, the air A supplied from the outside passes through the annular groove 31 a of the die receiver 64. The two horizontal through holes 31 b enter the annular groove 31 c of the ejector pipe 33, and are ejected from the plurality of ejection ports 32 to 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, and thus a negative pressure is generated below the die hole 53, and the negative pressure is increased. Based on this, the external air B is sucked through the die hole 53.
[0058]
Accordingly, the residue W1 generated during the processing of the workpiece W (FIG. 6B) is strongly sucked downward from the die hole 53, and is forcibly discharged to the outside from the residue discharge hole 45 through the residue discharge hole 35. This prevents the residue from rising.
[0059]
FIG. 9 shows the second embodiment of the present invention as described above. The first embodiment of FIG. 6 is different from the first embodiment of FIG. 6 in that the die holder 23 to which the die D is attached is attached to the rotatable die receiver 64 and has an annular groove. Although common in that 31a is provided on the outer surface of the die receiver 64, a nozzle member 46 is incorporated in the die D, and the plurality of injection ports 32 are provided in the nozzle member 46, whereby an annular groove is provided. The point where the introduction part for introducing the air A from 31a to the injection port 32 is directed upward (FIG. 12B), and further, the point that the duct 49 is provided on the lower surface of the nozzle member 46, Mainly different.
[0060]
Thus, as is well known, the negative pressure generation position F is brought closer to the die hole 53 of the die D, the negative pressure is increased, and the suction of the air B sucked from the outside through the die hole 53 is performed. By increasing the force, the large dregs W1 is prevented from rising.
[0061]
That is, the nozzle member 46 is incorporated in the die D of FIG. 9 via the shielding plate 51, and the duct 49 is attached to the nozzle member 46, and the duct 49 is approximately half the height of the ejector pipe 33. It extends to the position.
[0062]
Of these, the nozzle member 46 has, for example, a flat cylindrical shape (FIGS. 10 and 11), and a discharge hole 47 communicating with the die hole 53 and a through hole 54 of the shielding plate 51 described later is formed inside. Has been.
[0063]
A T-shaped groove 31 is formed on both sides of the discharge hole 47 (FIGS. 11 and 12A) and on the upper surface 46A of the nozzle member 46, and the T-shaped groove 31 has the air described above. A part of the introduction part for introducing the air A from the circulation path 80 to the injection port 32 described later is configured.
[0064]
The T-shaped groove 31 (FIG. 12A) includes a portion 31A provided in the vicinity of the discharge hole 47 and parallel to the discharge hole 47, and a portion 31B communicating with the parallel portion 31A and orthogonally extending outward. Has been.
[0065]
Among these, a plurality of injection ports 32 are formed in the longitudinal direction in the parallel portion 31 </ b> A, and each injection port 32 is inclined downward toward the discharge hole 47.
[0066]
Further, as shown in the drawing, the outer periphery of the upper surface 46A of the nozzle member 46 is stepped and lowered one step, and an annular air passage 55 inclined downward is formed.
[0067]
The annular air passage 55 communicates with an orthogonal portion 31 </ b> B constituting the T-shaped groove 31.
[0068]
On the other hand, the shielding plate 51 is made of nylon, for example, and closes the T-shaped groove 31 and the outer air passage 55 by shielding the upper surface 46A of the nozzle member 46, and the nozzle member 46 is die-molded. A through-hole 54 having an opening having 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 cuboid cylinder 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 to the position F (FIG. 12B) and generates a large negative pressure generated around the position F. And by concentrating the external air sucked from the die hole 53 based on the negative pressure in a narrow region, the suction force is strengthened, and the waste W1 sucked by the strengthened suction force is passed. .
[0071]
On the other hand, in the case of FIG. 9 as well, an annular groove 31a 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. The L-shaped through hole 31d is a vertical provided on the flange of the ejector pipe 33. The vertical through hole 31e communicates with an inverted L-shaped through hole 48 provided in the die D, and the inverted L-shaped through hole 48 is formed on the left side, for example, on the left side. It communicates with the orthogonal portion 31B of the T-shaped groove 31 (FIG. 12A).
[0073]
With this configuration, after the punch P and the die D are positioned at the punch center C, the punch receiver 63 and the die receiver 64 are rotated, for example, so that the die D is rotated by a desired angle α ′ (FIG. 12A). To do.
[0074]
When processing is started in this state, air A circulates through the annular groove 31a of the die receiver 64 rotated through the communication pipe 30 by a desired angle α ′.
[0075]
As a result, the air A supplied from the outside circulates through the annular groove 31a of the die receiver 64 regardless of the angle α ′ (FIG. 12A) where the die receiver 64 and hence the die D are positioned. After passing 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 reverse L-shaped through hole of the die D is formed. From 48, it passes through the T-shaped groove 31 on the nozzle member 46 and is injected from a plurality of injection ports 32.
[0076]
In this case, the air A entering from the inverted L-shaped through hole 48 of the die D (FIG. 12A), on the other hand, passes through the orthogonal part 31B of the left T-shaped groove 31 and enters the parallel part 31A. And then 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 right T-shaped groove 31, it enters the parallel portion 31A, and similarly 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 directly under the outlet of the discharge hole 47, and the duct. 49, a large negative pressure is generated on the lower side of the die hole 53.
[0078]
Therefore, a large amount of external air B is sucked through the die hole 53 based on this large negative pressure, 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 residue W1 generated during processing of the workpiece W (FIG. 9B) is strongly sucked downward from the die hole 53, whereby the through hole 54 of the shielding plate 51, the discharge hole 47 of the nozzle member 46, and the duct. Even if it is a large dregs W1 that passes through 49 and is forcibly discharged to the outside and is formed by a large-diameter mold, dregs rise is easily prevented.
[0080]
When the nozzle member 46 is incorporated in 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. The bracket 52 is attached to the nozzle member 46 in a state in which the shielding plate 51 is brought into contact with the ceiling of the residue hole 45 of the die D and the inlet of the duct 49 is aligned with the outlet of the discharge hole 47 of the nozzle member 46. Make contact with the bottom 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 die removal hole 45 of the die D, and the bolt 61 is passed through the hole 62 from below the bracket 52 and the nozzle. If screwed into the lower surface of the member 46, the nozzle member 46 can be brought into close contact with the wall surface of the dregs hole 45 with the shielding plate 51 interposed and the duct 49 attached, so that it can be incorporated into the die D.
[0082]
As a result, for example, the entrance of the orthogonal portion 31B constituting the left T-shaped groove 31 (FIG. 12B) communicates with the inverted L-shaped through hole 48 of the die D, and the shielding plate 51 The T-shaped grooves 31 on both sides of the discharge hole 47 are 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 residue hole 45 of the die D.
[0083]
The original workpiece W from which the residue W1 is sheared is gripped by the 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 a ball screw 15 of an X-axis motor Mx is screwed to the carriage 12.
[0085]
The carriage base 11 is slidably coupled to the Y-axis guide rail 17 on the lower frame 18, and the ball screw 14 of the 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 workpiece 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 for the turret punch press having the above configuration is configured by an NC device 50 (FIG. 1), which includes a CPU 50A, a machining control unit 50B, a turret rotation control unit 50C, and a mold rotation control unit. 50D, striker position control unit 50E, input / output unit 50F, storage unit 50G, and workpiece positioning control unit 50H.
[0088]
The CPU 50A is a determination subject of the NC device 50 and comprehensively controls the entire apparatus shown in FIG. 1, such as the machining control unit 50B, the turret rotation control unit 50C, and the mold rotation control unit 50D.
[0089]
The machining control unit 50B operates the ram cylinder 19 and lowers the striker 2 positioned at the predetermined track positions C1, C2, and C3, thereby hitting the selected punch P, and corresponding die D and A predetermined processing is performed on the workpiece W in cooperation with each other, and during the processing, the air source 25 is operated, and the air A is supplied through the 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 to which desired dies P and D to be selected are attached to the punch center C. Position to.
[0091]
After the desired molds P and D are positioned at the punch center C, the mold 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 predetermined track positions C1, C2, and C3, and as described above, based on the feedback signal from the encoder of the striker cylinder 21, The switching valve 34 is switched in accordance with the track positions C1, C2, and C3 of the striker 2, and only the corresponding air supply port 28 on the upper surface of the disk support 24 is connected to the air source 25.
[0093]
The input / output unit 50F inputs a machining program, data, and the like with a key, a mouse, and the like and confirms them on the screen, and the inputted machining program is stored in the storage unit 50G.
[0094]
The workpiece positioning control unit 50H operates the X-axis motor Mx and the Y-axis motor My to position the workpiece W gripped by the clamp 13 on the punch center C.
[0095]
The operation of the present invention having the above configuration will be described below.
[0096]
For example, when a workpiece W is loaded into a turret punch press (FIG. 1) from a workpiece loading / unloading device (not shown), the CPU 50A that detects the workpiece W controls the workpiece 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 rotate the turrets 6 and 7 synchronously, so that the holders 22 and 23 to which the desired dies P and D to be selected are attached are attached. Position to 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 causing the molds P and D to move to a desired angle, for example, α (FIG. 8). (A)) or α ′ (FIG. 12A) is rotated.
[0099]
Next, the CPU 50A operates the striker cylinder 21 via the striker position control unit 50E to position the striker 2 at predetermined track positions C1, C2, and C3 of the molds P and D to be selected, and then the machining control unit. 50B is controlled, the ram cylinder 19 is operated to lower the positioned striker 2, the selected punch P is struck, 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 the ram cylinder 19 is operated in this state. The workpiece W (FIGS. 6B and 9B) is punched by the cooperation of the punch P and the die D, and a waste W1 is generated.
[0101]
At the same time, the CPU 50A controls the striker position control unit 50E (FIG. 1) to switch the switching valve 34 in accordance with the track position C2 of the striker 2 based on the 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]
Thus, the air A supplied from the corresponding air supply port 28 (FIG. 6B, FIG. 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]
As a result, the air A supplied from the outside passes through the introduction portion as described above from the air circulation path 80 no matter what angle α, α ′ the die receiver 64 and hence the die D are positioned at. (FIG. 8 (B) or FIG. 12 (B)), the negative pressure generated below the die hole 53 is injected from a plurality of downwardly inclined nozzles 32 and converges to the position E or F. As a result, air B is sucked from the die hole 53, and the waste W1 generated when the workpiece W is processed is strongly sucked below the die hole 53 to be forcibly discharged to the outside.
[0104]
【The invention's effect】
As described above, according to the present invention, in a die apparatus 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. The die is placed on an ejector pipe inserted into an opening of a die receiver that constitutes a waste discharging hole, An annular groove for circulating air supplied from the outside is provided on the outer surface of the rotatable die receiver, and air is introduced from the annular groove into a plurality of injection ports inclined downward toward the waste discharge hole. By providing an air introduction part, in a turret punch press having a mold rotating mechanism, air can be supplied regardless of the angle of the mold, thereby preventing the scum rise prevention mechanism by air. The effect of expanding the application range so that it can be applied to the mold was also achieved.
[0105]
[Brief description of the drawings]
FIG. 1 is an overall view showing an embodiment of the present invention.
FIG. 2 is a view 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 and an air introduction port 29 in the case of 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 a first embodiment of the present invention (in the case of molds P and D of 1/4 inch).
7 is a view showing an air introduction part of FIG. 6;
FIG. 8 is an operation explanatory diagram 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).
10 is a view showing the air introduction part of FIG. 9;
11 is a view showing a relationship among the die D, the shielding plate 51, the nozzle member 46, and the duct 49 of FIG.
12 is an operation explanatory diagram of FIG. 9. FIG.
FIG. 13 is a general explanatory view of a conventional turret punch press.
[Explanation of symbols]
1 Upper frame
2 striker
3 Drive shaft
4, 5 chain
6 Upper turret
7 Lower turret
8,9 Rotating shaft
10 tables
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 striker cylinder
22 Punch holder
23 Die holder
24 disk support
25 Air source
26 Main line
27 Branch pipe
28 Air supply port
29 Air inlet
30 communication pipe
31 T-shaped groove
31a, 31c annular groove
32 injection port
33 Ejector pipe
34 Switching valve
35 Waste discharge hole
40 Die insertion hole
41 Opening of die holder 23
42 Opening of lower turret 7
43 Opening of disc support 24
44 Opening of lower frame 18
45 Dust hole in Die D
46 Nozzle member
47 Discharge hole of nozzle member 46
48 Air Inlet formed in Die D
49 Duct
50 NC unit
50A CPU
50B Machining control unit
50C Turret rotation controller
50D mold rotation controller
50E striker position controller
50F I / O section
50G storage unit
50H Work positioning controller
51 Shielding plate
52 Bracket of duct 49
53 Die hole
54 Through-hole of shielding plate 51
55 Annular air passage
56 keys
57 Keyway
58, 59, 62 holes
60, 61 bolt
63 Punch holder
64 die receiver
65 Worm wheel of punch receiver 63
66 Worm wheel of die receiver 64
67 Worm meshing with worm wheel 65
68 Worm meshing with worm wheel 66
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 axis
A Air from air source 25
B Air from outside
C punch center
D die
E, F Air A focusing position
P punch
R Turret center
W Work
W1 unplug

Claims (3)

In a die apparatus 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.
The die is placed on an ejector pipe inserted into an opening of a die receiver that constitutes a waste discharging hole, and an annular groove that circulates air supplied from the outside is provided on the outer surface of the rotatable die receiver. A die apparatus comprising: an air introducing portion that introduces air from the annular groove to a plurality of injection ports inclined downward toward the waste discharge hole.   When a plurality of injection ports are provided in the ejector pipe, the air introduction portion communicates with an annular groove provided in the outer surface of the die receiver and a horizontal through hole provided in the die receiver and the horizontal through hole 2. The die apparatus according to claim 1, wherein the die apparatus is constituted by an annular groove provided on an outer surface of the ejector pipe so as to communicate with the hole and the plurality of injection ports.   When a plurality of injection ports are provided in the nozzle member that is installed in the die above the ejector pipe, the air introduction portion communicates with an annular groove provided in the outer surface of the die receiver. An L-shaped through-hole provided in the receiver, a vertical through-hole communicated with the L-shaped through-hole and provided in a flange of the ejector pipe, and an inverted L-shaped communicated with the vertical through-hole and provided in the die The die apparatus according to claim 1, comprising a through-hole, and a T-shaped groove provided on the upper surface of the nozzle member so as to communicate with the inverted L-shaped through-hole and the plurality of injection ports.

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