JP2014124669A - Turret punch press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turret punch press in which an ejector pipe does not become an obstacle and which allows fabrication by pushing up only a molding die by a pressing part of molding equipment even in an index station at a position on a turret where a die rotation mechanism is provided.SOLUTION: A die holder 39 to which a first ejector pipe 42 which freely rotates by a die rotation mechanism and loads a molding die Df is attached is provided to a lower turret 15, a second ejector pipe 43 is attached to a lower end of the first ejector pipe 42 as a free state in a circumferential direction, the second ejector pipe 43 is fixed to the lower turret 15, a notch 44 is provided at a lower end of the second ejector pipe 43, and when the molding die Df is selected at a processing position K1, an elevated pressing part 48 of molding equipment 70 passes through the notch 44 of the second ejector pipe 43 to push up only the molding die Df.

Description

  The present invention relates to a turret punch press, and more particularly to a turret punch press that includes a mold exchanging device and a mold rotating mechanism, and has a lower turret diameter larger than an upper turret diameter and a molding apparatus installed at a processing position.

  Conventionally, a turret punch press having a mold exchanging device and having a lower turret diameter larger than an upper turret diameter is disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-58226 (FIGS. 6 and 7 of the same publication). .

  A die push-up cylinder 109 is installed below the die replacement position in the lower turret 101L having a larger diameter (FIG. 7 of the same publication), and the ejector pipe 113 is pushed up by the die push-up cylinder 109 to be attached to the die holder 111. The die D is removed.

  The removed die D is returned to the tool magazine 107 via the tool changer 105 (FIG. 6 of the publication).

  Further, instead of the returned die D, a new die D is taken out from the tool magazine 107 and mounted on the die holder 111 via the tool changer 105.

JP 2001-58226 A

  However, as shown in FIG. 6 of the publication, a forming cylinder 119 for forming may be provided below the lower turret 7101L at the processing position (just below the ram 117).

  In this case, there is a problem in that the ejector pipe 119 is in the way and the forming cylinder 119 cannot push up the forming die, so that the forming process itself cannot be performed.

  That is, the pressurizing portion of the molding apparatus (protrusion 45 described later (FIG. 2 of the same publication)) has a rectangular shape in cross section so that it can be applied to all molding dies from a small diameter to a large diameter. For this reason, as described above, the molding die D cannot be pushed up by interfering with the ejector pipe.

  Therefore, as shown in FIG. 3B of the publication, a notch 51 is provided at the lower end portion of the ejector pipe 49, and the piston rod 41 (same as shown in FIGS. 4 and 5 of the publication) is formed. The protrusion 45 on the upper surface of the head 43 in FIG. 3) of the gazette, that is, the pressurizing part of the molding apparatus can pass through the notch 51 to push up only the intermediate pin 47 of the molding die Df, enabling molding processing. It was.

  However, in an index station which is a position on an upper turret and a lower turret (hereinafter simply referred to as a turret) where a mold rotating mechanism is provided, the die is set so that the direction of the cutting edge of the forming die is directed to a predetermined angle. When it is rotated, the ejector pipe is also structurally rotated (for example, Japanese Patent Application Laid-Open No. 2000-61550). Therefore, even if the notch is provided as described above, the ejector pipe and the pressurizing portion of the molding apparatus interfere with each other. Resulting in.

  As a result, there is a problem that molding cannot be performed at an index station (for example, a processing position immediately below the ram) at a position on the turret where the mold rotation mechanism is provided.

  An object of the present invention is to form the molding station by pushing up only the molding die by the pressure unit of the molding apparatus, even in the index station which is a position on the turret where the mold rotation mechanism is provided. A turret punch press capable of processing is provided.

In order to solve the above problems, the present invention, as shown in FIGS.
In the turret punch press 1 having a mold exchanging device 79 and a mold rotating mechanism, an upper turret 11 and a lower turret 15, and having a molding device 70 installed at a processing position K1,
A die receiver 39, which is rotatable by a mold rotating mechanism and has a first ejector pipe 42 on which a forming die Df is mounted, is provided in the lower turret 15, and a second ejector pipe is provided at the lower end of the first ejector pipe 42. 43 is attached in a free state in the circumferential direction, the second ejector pipe 43 is fixed to the lower turret 15 in the circumferential direction, a notch 44 is provided at the lower end of the second ejector pipe 43, and the molding die Df Is selected as the processing position K1, the die pressurizing portion 48 of the molding device 70 passes through the notch 44 of the second ejector pipe 43 and pushes up only the molding die Df. The device 2 is taken.

  Therefore, according to the configuration of the present invention, the die receiver 39 (FIG. 2) is used by the mold rotating mechanism at an index station, for example, the processing position K1 (FIG. 1), which is a position on the turret where the mold rotating mechanism is provided. ) Is rotated and the first ejector pipe 42 is rotated together with the forming die Df, the second ejector pipe 43 attached to the first ejector pipe 42 is fixed to the lower turret 15 (FIG. 2). Therefore, the pressurizing part 48 of the molding apparatus 70 that has been lifted through the notch 44 of the fixed second ejector pipe 43 pushes up only the molding die Df, so that molding can be performed.

  As described above, according to the present invention, even in the index station which is a position on the turret where the mold rotation mechanism is provided, the ejector pipe does not get in the way, and the pressurizing unit of the molding apparatus pushes up only the molding die. By this, there exists an effect | action and effect of providing the turret punch press which enables a shaping | molding process.

1 is an overall view showing an embodiment of the present invention. It is a figure which shows the detail of this invention. It is a figure which shows the relationship between the 1st ejector pipe 42 and the 2nd ejector pipe 43 by this invention. FIG. 4 is an exploded perspective view of FIG. 3.

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.

  The turret punch press shown in FIG. 1 has an upper frame 9 and a lower frame 3. An upper turret 11 is provided on the lower surface of the upper frame 9 via a rotation shaft 13, and a lower turret 15 is provided on the upper surface of the lower frame 3. Are rotatably supported via a rotating shaft 17.

  Each of the upper turret 11 and the lower turret 15 is provided with a plurality of dies each composed of a punch P and a die D, and the diameter of the lower turret 15 is larger than the diameter of the upper turret 11. 17 are eccentric to each other.

  In the turret punch press 1, the upper turret 11 and the lower turret 15 are rotated synchronously to select a desired punch P and die D, and the punch P is struck by a ram 21 (electric type). A machining position K1 for punching the workpiece W in cooperation is provided, and a molding apparatus 70 is installed at the machining position K1.

  Further, the turret punch press 1 is provided with a punch exchange position K2 in the upper turret 11 and a die exchange position K3 in the lower turret 15 in relation to a mold exchanging device 79 described later. An ejector cylinder 97 is installed at K3.

  A center table 23 is fixed to the upper surface of the lower frame 3, and side tables (not shown) that move in the Y-axis direction together with the carriage base 29 are provided on both sides (X-axis direction). ing.

  A Y-axis ball screw 27 that is rotationally driven by a Y-axis motor 25 is screwed onto the carriage base 29, whereby the carriage base 29 is accompanied by the side table (not shown) in the Y-axis direction. Move to.

  A carriage 31 provided with a clamp 33 for gripping the workpiece W is slidably coupled to the carriage base 29 and an X-axis ball screw (not shown) that is rotationally driven by an X-axis motor (not shown) is screwed. As a result, the carriage 31 moves in the X-axis direction.

  Therefore, the carriage 31 and the carriage base 29 constitute a positioning means for the workpiece W held by the clamp 33.

  FIG. 2 shows details of the present invention.

  In FIG. 2, a die receiver 39 (shaded portion) rotatably attached to the lower turret 15 by means of a bearing 40 is provided with a worm wheel 38, which is connected to a worm (not shown) of a mold rotating mechanism. The blade edge of the forming die Df is set to a desired angle.

  In this case, the mold rotating mechanism is a mechanism for setting a cutting edge of a mold generally composed of a punch P (FIG. 1) and a die D to a desired angle, for example, a processing position K1 (FIG. 1). Since it is provided at the opposite position and is well known (for example, [0041] to [0046] in Japanese Patent No. 4139955, FIG. 5), description thereof is omitted.

  A die holder 37 is screwed to the die receiver 39, and the molding die Df is attached to the die holder 37 via a key 35 and a key groove 36. The molding die Df is a first ejector pipe 42 to be described later. The flange 50 is mounted.

  The die holder 37 to which the molding die Df is attached, the die receiver 39, and the worm wheel 38 are covered with a housing 34 on the lower turret 15, as shown in FIG.

  Each of the first ejector pipe 42 and the second ejector pipe 43 described later has a hollow cylindrical shape (FIG. 3) and has the following functions as well known.

  In other words, at the die exchange position K3 of the lower turret 15 (FIG. 1), the second ejector pipe 43 is pushed up together with the first ejector pipe 42 by the ejector cylinder 97 installed immediately below, and the forming die Df is taken out. Accordingly, the first ejector pipe 42 and the second ejector pipe 43 have a function of taking out the forming die Df.

  As shown in the figure, the first ejector pipe 42 has a flange 50 engaged with a shoulder 49A of an insertion hole 49 formed in the die receiver 39. Further, the first ejector pipe 42 is connected to the interior of the die receiver 39. And, it passes through the opening 41 of the lower turret 15 and slightly protrudes downward from the lower surface of the lower turret 15, and an annular convex portion 42A (FIGS. 2 and 4) is formed at the lowest position on the outer periphery of the protruding portion. Has been.

  That is, the annular convex portion 42A, for example, a circular convex portion 42A is formed at the lowest position on the outer periphery of the lower end portion of the first ejector pipe 42.

  An annular recess 43A formed on the inner periphery of the second ejector pipe 43, for example, the circular recess 43A, is engaged with the circular protrusion 42A, and the flange 51 of the second ejector pipe 43 is connected to the first ejector. It is inserted into the groove 52 of the pipe 42.

  With this configuration, the second ejector pipe 43 is attached to the lower end portion of the first ejector pipe 42 in a free state in the circumferential direction.

  In addition, key grooves 47 are formed at opposite positions in the circumferential direction on the outer periphery of the second ejector pipe 43 (FIG. 2B), and the keys 46 inserted into the key grooves 47 are connected to the lower turret. It is fixed so as to correspond to each key groove 47 at the opposed position on the 15 side.

  In other words, as described above, the second ejector pipe 43 is attached to the lower end of the first ejector pipe 42 in a free state in the circumferential direction, and is attached to the lower turret 15 by the key groove 47 and the key 46. The second ejector pipe 43 is fixed in the circumferential direction.

  That is, when the worm (not shown) of the mold rotating mechanism meshes with the worm wheel 38 (FIG. 2), the die receiver 39 rotates, and accordingly, the first ejector pipe 42 moves relative to the second ejector pipe 43. The second ejector pipe 43 is fixed in the circumferential direction with respect to the lower turret 15 and thus does not rotate.

  However, the second ejector pipe 43 is slidable in the vertical direction (Z-axis direction) together with the first ejector pipe 42, and as described above, both are pushed up by the ejector cylinder 97 (FIG. 1) and molded. The die Df (FIG. 2) is taken out.

  Furthermore, a notch 44 is formed at the lower end portion of the second ejector pipe 43, and the notch 44 is large enough to allow the pressurizing portion 48 of the molding apparatus 70 to pass through (FIG. 2, FIG. 2). 3).

  In addition, regarding the pressurizing part 48 of the molding apparatus (for example, hydraulic cylinder) 70 (FIG. 2A), the pressurizing part 48 is, for example, a cross section provided on the upper surface of the head 72 of the piston rod 71 (FIG. 3). Is a rectangular parallelepiped having a long rectangular shape, and the entire structure is well known ([0023] to [0025] of Japanese Patent Laid-Open No. 2007-58226, projection 45 in FIG. 2), and the description thereof is omitted.

  Therefore, in the index station which is a position on the turret where the mold rotation mechanism is provided, for example, when the molding die Df (FIG. 2) is selected at the processing position K1 (FIG. 1), the mold rotation mechanism Even if the die receiver 39 is rotated and the first ejector pipe 42 is rotated accordingly, the second ejector pipe 43 is fixed, so that the pressurizing portion 48 of the forming apparatus 70 passes through the notch 44. Thus, only the forming die Df is pushed up to enable the forming process.

  In this case, the molding die Df (FIG. 2 (A)) has a molding jig (intermediate pin) 45 extending from its lower surface, and the molding jig 45 penetrates the inside of the first ejector pipe 42, and The second ejector pipe 43 reaches almost the same height as the lowest position (FIG. 3).

  More specifically, the ascending pressure portion 48 of the molding apparatus 70 passes through the notch 44 of the second ejector pipe 43 and presses the molding jig 45 to thereby be placed on the first ejector pipe 42. Only the placed forming die Df is pushed up.

  Therefore, according to the present invention, even in the index station which is the position on the turret where the mold rotating mechanism is provided, the ejector pipe does not get in the way, and the pressurizing part of the molding apparatus pushes up only the molding die. The effect of providing a turret punch press capable of forming is achieved.

  As shown in FIG. 4, the second ejector pipe 43 is divided into two parts 431 and 432, each having semicircular recesses 43 </ b> A <b> 1 and 43 </ b> A <b> 2 and semicircular flanges 511 and 512.

  With this configuration, the semicircular concave portions 43A1 and 43A2 are locked to the circular convex portion 42A on the first ejector pipe 42 side, and the semicircular flanges 511 and 512 are inserted into the grooves 52 on the first ejector pipe 42 side. If the bolts 53, 54, 55, for example, half bolts, are screwed in the state in which the two portions 431 and 432 are in contact with each other, they are brought into close contact with each other to form one second ejector pipe 43 as shown in FIG.

  On the other hand, a die changer 79 is installed adjacent to the turret punch press 1 (FIG. 1), and the die changer 79 is composed of a tool changer 81 and a tool magazine 83, which are already well known. Only the outline will be described below.

  The punch changer arm 85 of the tool changer 81 attaches or detaches the punch P by the punch gripper 84 at the punch changer position K2 of the upper turret 11, and the die changer arm 87 moves at the die changer position K3 of the lower turret 15. The die gripper 86 attaches or detaches the die D.

  The punch exchange arm 85 and the die exchange arm 87 are attached to a rotatable support column 89 via gears G1 and G2 by a motor M1, and are respectively rotated up and down.

  The tool magazine 83 has a punch storage turret 93 and a die storage turret 95. The former can store a large number of punches P and the latter can store a large number of dies D. Both turrets 93 and 95 are gears G3 and G4 by a motor M2. It is attached to a support column 91 that can be freely rotated.

  The operation of the turret punch press according to the present invention having the above configuration will be described below.

  First, by rotating the upper turret 11 (FIG. 1) and the lower turret 15 synchronously, a desired die, for example, a forming die Df (FIG. 2 (A)) and a corresponding punch are selected at the processing position K1. Then, the worm (not shown) of the mold rotating mechanism installed at the processing position K1 meshes with the worm wheel 38, the die receiver 39 rotates, and the first ejector pipe 42 together with the forming die Df is also rotated. Rotate.

  However, even if the first ejector pipe 42 rotates, the second ejector pipe 43 does not rotate by the key groove 47 (FIGS. 2B and 3) and the key 46 as described above. Yes.

  Therefore, when the pressurization unit 48 of the molding apparatus 70 (FIGS. 1 to 3) installed at the processing position K <b> 1 rises, the pressurization unit 48 is notched 44 formed in the second ejector pipe 43. Then, the molding jig 45 is pressed, and only the molding die Df (FIG. 2) connected to the molding jig 45 is pushed up, so that molding can be performed.

  Therefore, according to the present invention, even in the index station which is the position on the turret where the mold rotating mechanism is provided, the ejector pipe does not get in the way, and the pressurizing part of the molding apparatus pushes up only the molding die. A turret punch press capable of forming can be provided.

  Further, the molding die Df (FIG. 2) selected at the processing position K1 is not necessary, and when replacing with another die, the molding die Df is positioned at the die replacement position K3 of the lower turret 15 (FIG. 1). After that, the ejector cylinder 97 installed at the die exchange position K3 is raised.

  In this case, as described above, the second ejector pipe 43 (FIG. 2) is slidable in the vertical direction (Z-axis direction) together with the first ejector pipe 42. The ejector pipe 43 is pushed up together with the first ejector pipe 42, and the forming die Df is taken out through the die gripper 86 of the die changer arm 87 (FIG. 1) constituting the tool changer 81 (FIG. 1). After returning to the storage turret 95, an alternative die is taken out by the die gripper 86 and mounted on the lower turret 15 at the die exchange position K3 on the turret punch press 1 side.

  In the index station which is a position on the turret where the mold rotation mechanism is provided, the ejector pipe does not get in the way, and the pressurizing part of the molding apparatus pushes up only the molding die, thereby performing the molding process. It is used for a turret punch press that can be used, and is extremely useful.

DESCRIPTION OF SYMBOLS 1 Turret punch press 2 Die apparatus 3 Lower frame 9 Upper frame 11 Upper turret 13 Upper turret rotating shaft 15 Lower turret 17 Lower turret rotating shaft 21 Ram 23 Center table 25 Y-axis motor 27 Y-axis ball screw 29 Carriage base 33 Clamp 34 Housing 35, 46 key
36, 47 Key groove 37 Die holder 38 Warm wheel 39 Die receiver 40 Bearing 41 Opening portion 42 of lower turret 15 First ejector pipe 43 Second ejector pipe 44 Notch 45 Molding jig 48 Pressing portion 49 of molding apparatus Insertion hole 50 51 Flange 52 Groove 70 Molding device 71 Piston rod 72 of molding device 70 Head 79 of piston rod 71 Die changing device 81 Tool changer 83 Tool magazine 84 Punch gripper 85 Punch changing arm 86 Die gripper 87 Die changing arm 89, 91 Post 93 Storage turret for punch 95 Storage turret for die 97 Ejector cylinder D Die Df Molding die P Punch G1, G2, G3, G4 Gear
K1 Processing position K2 Punch replacement position K3 Die replacement position W Workpiece

Claims (3)

In a turret punch press that includes a mold exchanging device and a mold rotating mechanism, and an upper turret and a lower turret, and a molding device is installed at a processing position.
A die receiver, which is rotatable by a mold rotating mechanism and has a first ejector pipe on which a molding die is placed, is provided on the lower turret, and a second ejector pipe is disposed in the circumferential direction at the lower end of the first ejector pipe. When the second die ejector pipe is fixed to the lower turret in the circumferential direction, the notch is provided at the lower end of the second ejector pipe, and the forming die is selected as the processing position, The turret punch press characterized in that the pressurizing portion of the forming apparatus ascends passes through the notch of the second ejector pipe and pushes up only the forming die.   An annular convex portion is formed on the outer periphery of the lower end portion of the first ejector pipe, and an annular concave portion on the inner periphery on the second ejector pipe side is locked to the annular convex portion, and an outer peripheral key of the second ejector pipe is locked. The turret punch press according to claim 1, wherein a key fixed to the lower turret side is inserted into the groove.   The second ejector pipe is slidable in the vertical direction together with the first ejector pipe. The second ejector pipe is pushed up together with the first ejector pipe by the ejector cylinder installed at the die replacement position of the lower turret and the molding die is taken out. The turret punch press according to claim 1.

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