JPH055217U - Box bending mold device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a box bending mold device capable of performing accurate bending even if the mold body is deformed by a bending load. [Constitution] Mold body 1 for bending a plate-like work 2 into a box
In the box bending mold device in which the swing mold 3 is slidably mounted at the end of the swing mold 3, the swing mold 3 is vertically adjusted between the end of the mold body 1 and the upper surface of the swing mold 3. Then, the bending portion 3a of the swing mold 3 can be preset in advance downward with respect to the bending portion 1a of the mold body 1, so that the deformation of the mold body 1 due to the bending load is taken into consideration. By presetting the oscillating die 3, accurate bending can be performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a box bending die device used for box bending of a plate-like work. .

[0002]

[Prior art]

  Conventionally, the work is bent into a box by the press brake, and the mold c is pulled from the work a. When pulling out, the flange part b of the work a that has already been bent interferes with part of the mold c. In order to prevent this, as shown in FIG. 8, the end of the mold c is swung up and down by a pin d. A swinging mold e supported freely is provided, or, for example, Japanese Utility Model Publication No. 56-14887. Sliding diagonally to the end of the mold, as in Japanese Patent Publication No. 2-76612 A die unit provided with a sliding die is used.

[0003]

[Problems to be solved by the device]

  However, all of the above-mentioned conventional mold devices are swinging type (or sliding type) when the work is bent. Since the structure that supports the load applied to the upper side of the side mold provided on both sides of the swing side, The precision during processing is determined by the precision of the abutment part of the swing type and side face type, and this part has high precision. Since it is required, there is a problem that the die device becomes expensive.

[0004]   When the side mold that supports the swing mold e is deformed by the bending load, the swing mold e As shown by the phantom line of 8, the bending angle of this part becomes large because it escapes upward. There is also a problem that the bending angle with other parts varies and the processing accuracy decreases. It was.   This invention was made in order to improve the above-mentioned problems. The present invention intends to provide a box bending mold device that enables work.

[0005]

[Means for Solving the Problems]

  In order to achieve the above object, this invention is a die book for bending a plate-like work into a box. A box bending mold device in which an oscillating mold is vertically slidably provided at an end of a body. Between the end of the body and the upper surface of the swing mold, adjust the swing mold up and down to bend the mold body. On the other hand, it is provided with adjusting means for presetting the swing-type bending part downward in advance. is there.

[0006]

[Work]

  With the above configuration, the rocking mold is preset in consideration of deformation of the mold body due to bending load. The bending angle between the bent part of the mold body and the bent part of the swing mold. It enables highly accurate bending without variation.

[0007]

【Example】

  An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. In the figure In addition, the plate-shaped mold body is elongated in the left-right direction, and the plate-shaped workpiece 2 is bent at the bottom. The bent portion 1a is formed in a straight line, and the upper side portion 1b is left at both ends to form a straight line. A rectangular notch 1c is formed.

[0008]   The rocking mold 3 is housed in these cutouts 1c. The oscillating mold 3 has one end side Is fixed to the other end of a lever 5 pivotally supported on the mold body 1 via a support shaft 4. 2 from the position shown in FIG. 1 around the support shaft 4 in the vertical direction. It can be rotated.   When the lower part of the swing mold 3 is accommodated in the notch 1c of the mold body 1, The bent portion 3a is formed so as to be substantially in line with the bent portion 1a of the mold body 1. And the outer end of the bent portion 3a is projected outward from both end surfaces of the mold body 1. When the work 2 is bent in a box, the other end of the work 2 can be bent. It

[0009]   Further, the vertical side portions 1d of the cutout portions 1c formed on both end sides of the mold body 1 have lower end sides. It is formed in an arc shape centered on the support shaft 4 so that the swing mold 3 can swing smoothly. And the front side of the mold body 1 near the vertical side portion 1d and the front of the swing mold 3. Grooves 1e and 3b are formed on the surfaces, respectively, and inside the groove 1f on the die body 1 side. One side of the steady rest plate 6 is fixed.   As shown in FIG. 5, the other side of the steady rest plate 6 is placed in the concave groove 3b of the swing die 3. It is fitted in the so that it can prevent the swinging die 3 from swinging when swinging in the vertical direction. ing.   In the figure, 7 is a stopper pin that is planted almost in the middle of the lever 5. Is fitted in an arcuate long groove 1e centered on a spindle 4 formed in the mold body 1, The lower swing range of the swing mold 3 is restricted.

[0010]   On the other hand, reference numeral 8 in the drawing denotes an adjusting mechanism, which is provided below the upper side portions 1b provided at both ends of the mold body 1. , A taper groove 8a is formed which is gradually lowered toward the center of the mold body 1 on the other end side, A wedge-shaped adjusting member 8b swings in the taper groove 8a toward the center of the mold body 1. Currently housed.

[0011]   A long hole 8c is formed in the adjusting member 8b in the moving direction, and the long hole 8c is formed in the long hole 8c. The adjusting screw 8d inserted from below allows the adjusting member 8b to move freely into the taper groove 8a. While being attached, one end side of the adjusting screw 8e rotates at the tip of the upper side 1b. And the other end of the adjusting screw 8e is screwed to the end of the adjusting member 8b. Have been combined.   Note that 8f is a lock nut that fixes the adjusting member 8b at the adjusting position.   Although the drawing shows only the left end side of the mold body 1, the same is true for the right end side of the mold body 1. Such a swinging type 3 is provided.

[0012]   Next, the operation will be described. When the plate-shaped work 2 is box-bent as shown in FIG. In the swing mold 3 provided at both ends of the mold body 1, the bent portion 3a is projected outward. However, the swing mold 3 is adjusted in consideration of this deformation. Sanawa After that, warm the lock nut 8f and rotate the adjusting screw 8e to adjust along the taper groove 8a. The member 8b is moved and adjusted to the center of the mold body 1.   As a result, the swing mold 3 is pushed down to the position shown by the solid line in FIG.

[0013]   That is, when both ends of the mold body 1 are deformed by a bending load, the mold body 1 is bent. Fold the mold body 1 in advance so that the bending portion 1a and the bending portion 3a of the swinging die 3 are aligned with each other. The bending portion 3a of the oscillating die 3 is preset downward by δ from the bending portion 1a.   The preset amount δ varies depending on the plate thickness and material of the work 2 to be bent. Therefore, the work 2 is preliminarily bent to detect the optimum value and adjusted according to this optimum value. To do.

[0014]   If the swing type 3 is preset as described above, the box bending process is performed in the same manner as the conventional method. When the long side 2b is bent, the short side 2c and the flange portion 2a have already been started. Even if it is bent, the swing mold 3 moves to the position shown in FIG. 2 as the mold body 1 rises. Since the oscillating die rotates, the swing die 3 does not interfere with the flange portion 2a, and the box bending process is performed. The mold body 1 can be pulled out from the completed work 2.

[0015]

[Effect of device]

  As described in detail above, this device considers that the mold body is deformed by bending load. Since the swing type can be preset with consideration, the mold body can be used at the end of bending. Adjust the preset amount so that the bent part and the swing-type bent part are aligned. This allows the bending angle of the bent part of the mold body and the bent part of the swing mold to be different. Bending with high accuracy and no flaws is possible.

[0016]   Also, since the positions of the mold body and the swing mold can be adjusted after the mold is manufactured, it does not shake at the manufacturing stage. The precision of the dynamic die support is not very necessary, and it makes the die production easier. In addition, even if both ends of the mold body are permanently deformed during long-term use, the adjustment work Since it can be used continuously, the life of the mold is extended.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a mold apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of the swing type swinging downward.

3 is a view from the direction A in FIG.

4 is a cross-sectional view taken along the line BB of FIG.

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

FIG. 6 is an explanatory view of an operation at the time of presetting an oscillating mold.

FIG. 7 is a perspective view of a work bent in a box.

FIG. 8 is an explanatory view of a conventional mold device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Mold body, 1a Bending part, 2 work pieces, 3 swinging type, 3a Bending part, 8b Adjustment member, 8e Adjustment screw.

Claims (2)

[Scope of utility model registration request] 1. A box bending mold apparatus in which an oscillating mold 3 is vertically slidably provided at an end of a mold main body 1 for bending a plate-like work 2 into a box, and the end of the mold main body 1 is provided. Adjustment of vertically adjusting the swinging die 3 between the upper portion and the upper surface of the swinging die 3 so as to preset the bending portion 3a of the swinging die 3 downward with respect to the bending portion 1a of the mold body 1. A box bending mold device provided with means. 2. A wedge-shaped adjusting member 8b in which the adjusting means is slidably accommodated in a taper groove 8a formed at the end of the mold body 1, and an adjusting screw for moving and adjusting the adjusting member 8b. The mold apparatus according to claim 1, which is composed of 8e.