JPH0726010U - Die fixing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a die fixing device capable of easily attaching and detaching the die to and from the die holder with good operability. [Structure] A die fixing bolt 33 connected to a lower bottom portion of a die 17 installed on the die holder 15, and a jaw portion 2 screwed to the die fixing bolt 33 and formed on the die holder 15.
5 and the die fixing nut 37 that is fastened by
In the die fixing device for fixing the die 17 to the die holder 15, a tool engaging hole 39 into which a rod-shaped nut turning tool is inserted in the outer peripheral surface of the die fixing nut 37 so that the tool can be inserted and removed in the radial direction of the nut is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a die fixing device, and more particularly to a die fixing device for fixing a die to a die holder in a plate bending device such as a press brake.

[0002]

[Prior art]

 Conventionally, in a plate bending device such as a press brake, fixing a die mounted on the die holder to the die holder is performed by screwing a die fixing nut to a die fixing bolt connected to the bottom bottom surface of the die, This is done by bringing the die fixing nut into contact with the jaw formed on the die holder by tightening the fixing nut.

[0003]

[Problems to be solved by the device]

 Conventionally, the die fixing nut is composed of a hexagon nut, etc., and tightening, tightening and loosening of this is done with a spanner, etc.However, since there is usually not enough space provided in the hexagon nut arrangement part, the spanner must be rotated. It was difficult to tighten and tighten this hex nut, and the operability for loosening was poor.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a die fixing device which has a good operability and allows a die to be easily attached to and detached from a die holder. I am trying.

[0005]

[Means for Solving the Problems]

 According to the present invention, the objects as described above correspond to a die fixing bolt connected to a lower bottom portion of a die installed on the die holder and a jaw portion screwed to the die fixing bolt and formed on the die holder. In a die fixing device that fixes the die to the die holder by a die fixing nut that is contacted and fastened, a tool into which a rod-shaped nut turning tool is inserted into the outer peripheral surface of the die fixing nut so that the tool can be inserted and removed in the radial direction of the nut. A die fixing device characterized in that an engagement hole is formed, or a headed rod member connected to the lower bottom surface of the die installed on the die holder, a jaw formed on the die holder, and A wedge member arranged between the head portion of the headed rod member and a wedge tightening bolt for tightening and fixing the wedge member to the die holder. It is achieved by the die fastening device, characterized in that.

[0006]

[Action]

 In the former type, a rod-shaped nut turning tool is inserted into the tool engagement hole of the die fixing nut in the radial direction of the nut with good operability, and the die fixing nut is turned by this nut turning tool to tighten the die fixing nut. Loosening is performed, which causes the die to be attached to and detached from the die holder.

In the latter, the wedge member is tightened between the jaw portion of the die holder and the head portion of the headed rod member by turning the wedge tightening bolt by a bolt turning tool, The die is attached to and detached from the die holder.

[0008]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows an embodiment of a press brake type bending device to which a die fixing device according to the present invention is applied. This bending device has, for example, a plate-shaped lower fixed table 3 fixed to the frame 1 and a plate-shaped upper ram member 5 provided on the frame 1 so as to be vertically movable. A ram drive mechanism (not shown) incorporated in the No. 1 unit drives the ram vertically.

A punch 11 is rotatably fixed to the lower end of the upper ram member 5 by an intermediate plate 7, a stopper plate 9, and the like.

A die holder 15 is fixedly attached to the upper end of the lower fixed table 3 by a stopper 13 or the like, and the die 17 is exchangeably fixed on the die holder 15 by a die fixing device described below. There is.

Next, an embodiment of the die fixing apparatus according to the present invention will be described with reference to FIGS. 2 and 3. The die holder 15 is composed of a bar-shaped upper member 21 and a lower member 23 that are fixedly connected to each other by bolts 19. The upper member 21 has a collar portion 25 and the upper surface of the upper member 21, that is, the die mounting surface. A plurality of die-fixing openings 29, which open at 27, are formed at equal intervals in the longitudinal direction.

A plurality of die fixing bolts 33 are fixedly connected to the lower bottom portion of the die 17 by the planting screw portions 31 at the same intervals as the intervals of the die fixing openings 29. The die fixing bolts 33 are received in the respective die fixing openings 29 when the die 17 is installed on the die mounting surface 27 of the upper member 21.

A die fixing screw portion 35 is formed in a portion where the die fixing bolt 33 is located in the die fixing opening 29. The die fixing screw portion 35 has a ring-shaped die fixing nut 37. Are screwed together.

A plurality of tool engaging holes 39 into which a rod-shaped nut turning tool T is inserted in the outer peripheral surface of the die fixing nut 37 so that the tool T can be inserted and removed in the radial direction of the nut are formed at equal intervals in the circumferential direction. Has been done.

In this die fixing device, when the die 17 is fixed, the die 17 to which the die fixing bolt 33 to which the die fixing nut 37 is already screwed is connected is moved in the front-back direction with respect to the die holder 15 ( It is mounted on the die mounting surface 27 of the upper member 21 while being shifted in the left-right direction in FIG. As a result, the die fixing bolts 33 and the die fixing nuts 37 are located in the die fixing openings 29.

In the tool engaging hole 39 of the die fixing nut 37, the nut turning tool T is easily inserted into the tool engaging hole 39 located on the front surface or near the front surface in the nut radial direction from the front side of the die holder 15. Insert and turn the die fixing nut 37 with this nut turning tool T to tighten it, and press the die fixing nut 37 against the jaw 25 to tighten the die fixing nut 37. As a result, the die 17 is pressed against the die mounting surface 27 of the upper member 21 and the die 17 is fixed on the die holder 15.

When removing the die 17, in the tool engaging hole 39 of the die fixing nut 37, the tool engaging hole 39 located on the front surface or near the front is inserted in the nut radial direction from the front side of the die holder 15. Then, the nut turning tool T is inserted without difficulty, and the die fixing nut 37 is turned by the nut turning tool T to loosen the die fixing nut 37 to separate the die fixing nut 37 from the contact with the jaw portion 25. As a result, the fixing of the die 17 is released, the die 17 is displaced in the front-rear direction with respect to the die holder 15, and the die fixing bolt 33 and the die fixing nut 37 come out from the die fixing opening 29. More removed.

4 and 5 show another embodiment of the die fixing device according to the present invention. 4 and 5, parts corresponding to those in FIGS. 2 and 3 are denoted by the same reference numerals as those in FIGS. 2 and 3. In this embodiment, a plurality of headed rod members 43 having heads 41 are fixedly connected to the lower bottom portion of the die 17 by the planting screw portions 45 at the same intervals as the die fixing openings 29. Has been done. The headed rod member 43 is received in each die fixing opening 29 when the die 17 is installed on the die mounting surface 27 of the upper member 21.

The collar portion 25 has a wedge lower surface 47 that is inclined downward as it goes from the front side toward the rear side, and a wedge member 49 is provided between the collar portion 25 and the head portion 41 of the headed rod member 43. It is arranged. The wedge member 49 has a wedge upper surface 51 joined to the wedge lower surface 47, a rod passing opening 53 extending in the vertical direction, and an elongated bolt passing hole 55 penetrating in the front-rear direction. .

A wedge tightening bolt 59, which is screwed into the screw hole 57 of the collar portion 25 at the tip, is inserted into the bolt through hole 55 from the front surface (front surface) of the wedge member 49. The wedge tightening bolt 59 is composed of a normal hexagon socket head cap screw and is rotated by a normal hexagon wrench.

A compression coil spring 61 is interposed between the collar portion 25 and the wedge member 49 for urging the two members in a direction in which they are separated from each other.

In this embodiment, when the die 17 is fixed, the die 17 to which the headed rod member 43 is connected is displaced relative to the die holder 15 in the front-rear direction (left-right direction in FIG. 5). It is mounted on the die mounting surface 27 of 21. As a result, each headed rod member 43 is positioned in the die fixing opening 29.

Then, a wedge tightening bolt 59 is tightened by a hexagonal wrench (not shown) to displace the wedge member 49 to the left in FIG. With this displacement, the wedge member 49 is displaced downward due to the sliding contact of the wedge upper surface 51 with the wedge lower surface 47. As a result, the wedge member 49 is tightened between the collar portion 25 and the head portion 41 of the headed rod member 43, and accordingly, the die 17 is pressed against the die mounting surface 27 of the upper member 21 to move the die 17 to the die holder. It is fixed on 15.

When the die 17 is removed, the wedge tightening bolt 59 is loosened by using a hexagon wrench (not shown), and the tightening of the wedge member 49 is released. As a result, the fixing of the die 17 is released, the die 17 is displaced in the front-rear direction with respect to the die holder 15, and the headed rod member 43 comes out from the die fixing opening 29, so that the die 17 is removed from the die holder 15. To be done.

In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to these, and various embodiments are possible within the scope of the present invention. It will be obvious to those skilled in the art.

[0027]

[Effect of device]

 As can be understood from the above description, according to the die fixing device of the present invention, a rod-shaped nut turning tool is inserted in the tool engaging hole of the die fixing nut in the nut radial direction with good operability. When the die fixing nut is turned by, the die fixing nut is tightened and loosened, and the die is attached to and detached from the die holder, or the wedge tightening bolt is turned by the bolt turning tool, Is tightened between the jaw of the die holder and the head of the headed rod member, and the die is attached to and detached from the die holder.In either case, operability is good and the die is easily attached to the die holder. Be removed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a press brake type bending device to which a die fixing device according to the present invention is applied.

FIG. 2 is a front view showing an embodiment of a die fixing device according to the present invention.

3 is a cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a front view showing another embodiment of the die fixing device according to the present invention.

5 is a cross-sectional view taken along the line VV of FIG.

[Explanation of symbols]

 1 Frame 3 Lower Fixed Table 5 Upper Ram Member 11 Punch 15 Die Holder 17 Die 25 Collar 29 Die Fixing Opening 33 Die Fixing Bolt 37 Die Fixing Nut 39 Tool Engagement Hole 43 Headed Rod Member 49 Wedge Member 59 Wedge Tightening Bolt T Nut turning tool

Claims (2)

[Scope of utility model registration request] 1. A die fixing bolt connected to a lower bottom portion of a die installed on a die holder, and a die fixing screwed to the die fixing bolt and abuttingly fastened to a jaw formed on the die holder. In a die fixing device for fixing the die to the die holder by means of a nut, a tool engaging hole into which a rod-shaped nut turning tool is inserted so that it can be inserted and removed in the nut radial direction is formed on the outer peripheral surface of the die fixing nut. A die fixing device characterized by the above. 2. A headed rod member connected to a lower bottom surface of a die installed on a die holder, and disposed between a jaw formed on the die holder and a head of the headed rod member. A die fixing device comprising: a wedge member; and a wedge tightening bolt that tightens and fastens the wedge member to the die holder so that the wedge member can be loosened.