JP5927026B2 - Mold holder - Google Patents

Description

  The present invention relates to a mold holder for holding a mold such as a punch or die in a bending apparatus for bending a plate-like workpiece, and more specifically, the punch and die are orthogonal to each other. The present invention relates to a mold holder in a bending apparatus provided so as to be rotatable about an axis, a Y-axis, and a Z-axis, and can be simplified and downsized as a whole.

  A press brake is known as a bending apparatus for bending a plate-like workpiece. However, since the press brake is a relatively large machine, if it is a relatively small product such as various chassis in an electrical product and the shape is complicated, it is difficult to change the mold and position the workpiece on the mold. There is a problem that. Therefore, as a bending device for bending small products with complex shapes, punches and dies as molds for bending plate-shaped workpieces held by workpiece clamps are orthogonal to each other. A bending apparatus having a structure that is rotatable about the X axis, the Y axis, and the Z axis has been proposed and put into practical use (see Patent Document 1).

JP-A-2-59118

  The configuration of the bending apparatus 1 described in Patent Document 1 is as shown in FIG. That is, the bending apparatus 1 includes a swivel base 5 that can be swung horizontally around a vertical Z-axis on the base 3, and the swivel base 5 can swing around a horizontal X-axis. A swing base 7 is provided. The swing base 7 is provided with a U-shaped bending base 9 that is rotatable around a Y axis orthogonal to the X axis. A die holder provided with a punch P and a die D as a die for bending a plate-like workpiece W at the front end of the U-shaped bending mount 9 (see FIG. 1). (Not shown) is detachably provided.

  Further, the base 3 is provided with a guide base 11 in the front-rear direction (direction orthogonal to the paper surface in FIG. 1), and a slider 13 supported on the guide base 11 so as to be movable in the front-rear direction. A guide post 15 is erected. An arm member 19 is supported by the vertical slider 17 provided on the guide post 15 so as to be movable up and down. The arm member 19 is supported so as to be movable in the left-right direction. A work clamp 21 that holds the lower side is provided.

  In the bending apparatus 1, when the workpiece W is bent by the cooperation of the punch P and the die D, the punch P and the die D are moved along the X axis in accordance with the bending direction of the workpiece W. , Rotate around the Y axis and the Z axis. According to the bending apparatus 1, as shown in FIGS. 1a and 1b of the patent publication 1, it is possible to bend a product having a complicated bent shape.

  By the way, when a product is bent, a part of the product may interfere with the mold holder that supports the punch P and die D depending on the shape of the product. It was desired. Further, it has been desired that when the mold is attached and detached, it can be easily and quickly performed.

The present invention has been made in view of the above-described problems, and includes a punch and a die for bending a plate-like workpiece held by a workpiece clamp so as to be attachable and detachable. A mold holder in a bending apparatus provided so as to be rotatable about an X axis, a Y axis and a Z axis orthogonal to the mold holder main body, which is detachably attached to the bending apparatus. An L-shaped mold mounting portion comprising an end surface abutting surface that abuts the base end surface of the mold and a side abutting surface that abuts the base end side surface of the mold, and the side surface of the mold is abutted on the side surface A clamping member having a die pressing portion for pressing in the surface direction is provided on the tip side so as to be swingable to the die holder main body, and is a base portion of the mold holder main body and facing the clamping member Provided with a cam receiving recess for swinging the fastening member. A cam member having rotatably housed in the recess, Ri direct contact with tare members said clamping, the fastening member is provided with a plurality in series with said mold holder body, said cam member The plurality of tightening members are in the shape of a round bar that is long in the arrangement direction, and are provided with notch recesses that allow the swinging of the respective tightening members only in portions corresponding to the respective tightening members. Is.

  In the mold holder, the cam member is provided with a circumferential groove in a circular section, and a tip end portion of a retaining pin provided in the mold holder body is engaged with the circumferential groove. To do.

  Further, in the mold holder, the cam member is provided with a rotation restricting member for restricting a rotation range of the cam member.

  According to the present invention, in the mold holder main body, the cam holder recess is provided on the opposite surface of the mold holder main body facing the tightening member provided so as to be swingable, and the cam holder recess is provided rotatably. Since the cam member is in direct contact with the tightening member, the overall configuration of the mold holder can be simplified and downsized, and the above-described problems can be solved.

It is front explanatory drawing which showed roughly the whole structure of the bending processing apparatus. It is composition explanatory drawing which shows the structure of the metal mold | die holder in a bending processing apparatus. It is explanatory drawing which shows the structure of a cam member. It is AA, BB, CC sectional explanatory drawing in FIG. 2 (B). It is sectional drawing in alignment with the DD cross section in FIG. 2 (B), It is explanatory drawing which shows the state which clamped and fixed the metal mold | die, and the state which cancel | released fixation.

  Hereinafter, the mold holder according to the embodiment of the present invention will be described with reference to the drawings. Since the bending apparatus 1 using the mold holder has a well-known configuration as described above, The configuration of the mold holder will be described.

  The mold holder 23 detachably attached to the distal end portion of the bending mount 9 in the bending apparatus 1 has a configuration as shown in FIG. That is, the mold holder 23 includes a mold holder body 25 that is long in the left-right direction (the direction of the fold line when the workpiece is bent) in FIG. The mold holder main body 25 includes a thick base portion 27. On the upper surface of the base portion 27, a mold mounting portion 31 for mounting a mold 29 such as a punch or a die is provided. The mold mounting portion 31 includes an end surface contact surface 31A that contacts the base end surface 29A of the mold 29, and a side surface contact surface 31B that contacts one side surface 29B of the base end side of the mold 29. It is the structure provided orthogonally, Comprising: It forms in L shape over the full length of the metal mold | die holder main body 25. FIG.

  In addition, the lower surface of the mold holder main body 25 is provided with a mounting portion 33 for mounting the bending base 9 in the bending apparatus 1. An L-shaped notch 39 having a vertical surface and a horizontal surface is formed on the front surface (right side surface in FIG. 2A) of the mold holder body 25, and a plurality of notches 39 are formed in the notch 39. The fastening member 37 is swingably provided. The plurality of fastening members 37 are provided over the entire length of the mold holder body 25.

  The clamping member 37 has a mold pressing portion 35 that presses a V groove 29D formed in the left and right direction (direction perpendicular to the paper surface in FIG. 2A) over the entire length of the other side surface 29C of the mold 29. In this configuration, the front end side (upper end surface) is provided obliquely projecting in the direction of the side surface contact surface 31B. The fastening member 37 is supported by a fixture 41 such as a plurality of bolts screwed to the mold holder main body 25 so as to be swingable in the direction in which the mold 29 is fastened.

  In order to swing the clamping member 37, it is a front surface of the base portion 27 in the mold holder main body 25, that is, a vertical surface on which the notch portion 39 is formed, and is opposed to the proximal end side of the clamping member 37. The left and right cam accommodating recesses 43 are formed over the entire length on the opposite surface. And in this cam accommodation recessed part 43, the cam member 45 for rocking | fluctuating the said fastening member 37 is accommodated rotatably. The cam member 45 has a length substantially equal to the length of the mold holder body 25, and an appropriate rotary tool (not shown) for rotating the cam member 45 is engaged with both ends. A rotating tool engaging portion 47 is provided.

  The cam member 45 and the tightening member 37 are in direct contact with no inclusions interposed therebetween, and the mold 29 is released from the portion corresponding to the tightening member 37 of the cam member 45. A notch recess 49 (see FIG. 3) is provided for allowing the fastening member 47 to swing in the direction to be engaged. A circumferential groove 51 is formed in a portion of the cam member 45 where the cut-out recess 49 is avoided and has a circular cross section. The circumferential groove 51 is provided in the mold holder body 25. The tip of the retaining pin 53 (see FIG. 4C) is engaged.

  Further, a rotation restricting member 55 (see FIG. 4B) such as a stopper pin for restricting the rotation range of the cam member 45 is provided at an appropriate position of the cam member 45. That is, the rotation restricting member 55 can freely pass through a vertical groove 37A formed in the tightening member 37, and is provided on a step portion 39A formed on the horizontal surface of the notch 39 in the mold holder body 25. By abutting, the rotation range of the cam member 45 is regulated. Note that an elastic member 57 such as a coil spring that biases the mold 29 in a direction to release the clamping of the mold 29 by the clamping member 37 (see FIG. 4) is provided between each of the clamping members 37 and the mold holder body 25. (See (A)).

  In the configuration as described above, as shown in FIGS. 2 and 5A, when the mold 29 is mounted on the mold holder 23, each fastening member 37 contacts the peripheral surface of the cam member 45. Thus, it is in a state of swinging in the direction in which the mold 29 is tightened. As described above, when the mold 29 is attached to and fixed to the mold holder body 25 of the mold holder 23, the rotary tool engagement provided at the end of the cam member 45 is performed in order to replace the mold 29. The rotary tool is engaged with the portion 47, the cam member 45 is rotated in the clockwise direction in FIG. 5, and the notch recess 49 formed in the cam member 45 is made to correspond to the tightening member 37.

  As described above, when each notch recess 49 of the cam member 45 corresponds to each tightening member 37, each tightening member 37 swings in the direction in which the mold 29 is released by the action of the elastic member 57 ( (See FIG. 5B). That is, all the plurality of fastening members 37 are simultaneously swung in the direction in which the mold 29 is released. Therefore, it is possible to easily remove the mold 29 without individually operating the plurality of fastening members 37.

  The mold 29 is attached to the mold holder main body 25 by positioning the mold 29 on the mold mounting portion 31 of the mold holder main body 25 and then reversely moving the cam member 45 in FIG. When rotated counterclockwise, the state shown in FIG. 5A is obtained, and the V-shaped groove 29D formed in the mold 29 is pressed by the mold pressing portion 35 of the fastening member 37, and the mold of the mold holder main body 25 is pressed. The mold 29 can be fastened and fixed to the mold mounting portion 31.

  As described above, when the cam member 45 is rotated, the rotation restricting member 55 provided in the cam member 45 comes into contact with the step portion 39A, and the rotation is restricted. Therefore, when the mold 29 is tightened by the tightening member 37, the cam member 45 is not rotated excessively, and the notch recess 49 of the cam member 45 does not correspond to the tightening member 37 again. Can be securely fixed.

  As will be understood from the above description, the mold holder 23 in the present embodiment simultaneously performs the operations of tightening and releasing all the plurality of tightening members 37 by rotating the cam member 45. It is possible to easily and quickly replace the mold 29 with respect to the mold holder 23. In addition, the cam member 45 has a configuration in which a notch recess 49 is formed on the outer peripheral surface of the round bar. The cam member 45 is easy and easy to process, and the fastening member 37 is in direct contact with the cam member 45. Therefore, the configuration can be simplified and downsized.

  Further, since the retaining pin 53 is engaged with the circumferential groove 51 formed in the cam member 45, for example, when the mold 29 is removed, when rotating around the X axis, the Y axis, and the Z axis, The cam member 45 does not move in the axial direction. Further, since the rotation restricting member 55 for restricting the rotation of the cam member 45 is provided, the cam member 45 is not excessively rotated, and the mold 29 can be securely fixed. Is.

DESCRIPTION OF SYMBOLS 1 Bending processing apparatus 9 Bending stand 21 Work clamp 23 Mold holder 25 Mold holder main body 29 Mold 31 Mold mounting part 35 Mold pressing part 37 Tightening member 39 Notch part 43 Cam accommodation recessed part 45 Cam member 47 Rotating tool Engagement section 49 Notch recess 51 Circumferential groove 53 Retaining pin 55 Rotation restricting member (stopper pin)

Claims (3)

Punches and dies for bending plate-shaped workpieces held by the workpiece clamps can be attached and removed, and the punches and dies can be rotated around the X, Y, and Z axes that are orthogonal to each other. A mold holder in a bending apparatus that is freely provided, and an end surface abutting surface that abuts a base end surface of the mold on a mold holder main body that is detachably attached to the bending apparatus, and the mold A clamp having an L-shaped mold mounting portion comprising a side surface abutting against the proximal side surface, and a mold pressing portion for pressing the side surface of the mold in the direction of the side surface abutting surface An attachment member is provided on the mold holder main body so as to be swingable, and a cam housing recess is provided on a surface of the mold holder main body facing the fastening member so as to swing the fastening member. A cam member rotatably provided in the cam housing recess. Ri direct contact with tare the timber, the fastening member is provided with a plurality in series with said mold holder body, said cam member is a long round bar in the arrangement direction of the plurality of fastening member, A mold holder, wherein only a portion corresponding to each tightening member is provided with a notch recess that allows the swinging of each tightening member. 2. The mold holder according to claim 1, wherein a circumferential groove is provided in a circular section of the cam member, and a distal end portion of a retaining pin provided in the mold holder body is engaged with the circumferential groove. Mold holder characterized by. 3. The mold holder according to claim 1, wherein the cam member is provided with a rotation restricting member for restricting a rotation range of the cam member.

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