JPH0530808Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is designed to bend a workpiece plate material such as a metal side plate used for a wall panel or a cabinet according to the horizontal width dimension of the workpiece plate material. The present invention relates to the structure of a bending device that can change the width dimension.

[Conventional technology]

Conventionally, after forming side ribs by bending the left and right edges of a workpiece plate material that is rectangular in plan view to a cross section of about 90 degrees, used for wall panels, cabinets, etc., the side edges perpendicular to the ribs are bent. When bending so as to stand up 90 degrees, it is necessary to use a bending die whose width is slightly shorter than the distance between the inner surfaces of the left and right ribs.

In this case, the folding mold is made by combining a group of adjustable molds with a thin width dimension and a group of divided molds with an appropriately thick width dimension, and fitting these molds tightly to form a folding mold with a predetermined width dimension. I try to do it.

As a means of selectively adjusting the dimensions of the bending die according to the dimensions of the bending point each time the left and right width dimensions of this type of workpiece plate material differ, Japanese Patent Publication No. 16203/1983 discloses a method of the prior art. The folding mold is composed of a group of multiple adjustable molds with a thin width dimension, a group of multiple split molds with a thick width dimension, and a pair of left and right end molds sandwiching these, and is arranged at the rear of the upper mold body. The split mold and the adjustable mold are slidably and rotatably fitted on the horizontal shaft provided, while the adjustable mold is configured to be freely engageable and detachable from a sliding key provided on the horizontal shaft, and The slide key is configured to be moved relatively along the longitudinal direction by rotation of the horizontal axis, and each split mold is moved up and down by an actuator provided on the rear side of the upper mold body, while any arbitrary For the adjustable number of sheets, only the part that is disengaged from the key attached to the horizontal shaft is turned 180 degrees to the rear of the upper mold body, and after being pulled out backward from the bottom surface of the upper mold body, It is disclosed that a bent mold having a predetermined width is formed by collecting the remaining molds by sliding them along the horizontal axis using the pair of left and right end molds.

[Problem that this invention attempts to solve]

According to this configuration, when adjusting the folding mold to a predetermined width dimension, for example, in order to extract either one or both of the split mold and the adjustable mold constituting the folding mold, it is necessary to After releasing the close contact, either the split mold or the adjustable mold, or both, must be moved upward and downward approximately 180 degrees rearward about the horizontal axis located at the rear lower part of the upper mold body.

Therefore, when changing the width dimension, the bending mold and the upper mold body should be made larger relative to the lower mold so that the tips of these split molds and adjustable molds do not collide with the lower mold when rotated. They had to be raised so as to be separated from each other, and it took time to raise the parts and lower them after the changing operation was completed, and it took a lot of time to change the width dimension.

In addition, each mold becomes larger than necessary in order to fit the split mold and the adjustable mold to the horizontal shaft on the rear side of the upper mold main body, and moreover, the horizontal shaft, the bending mold, the upper mold main body, and the suspension of these molds become larger than necessary. Since the weight of the column member held is considerably large, the elevating and lowering mechanism is inevitably large-sized, resulting in the disadvantage that the entire machine is bulky.

The object of the present invention is to provide a compact folding device that solves these problems.

[Means for solving problems]

In order to achieve this purpose, the present invention is an apparatus for bending workpiece materials such as metal plates with a bending die.
The bending mold is constituted by at least a plurality of divided molds and a tooth tip piece having a thin tooth tip inserted between each of the divided molds, and each of the divided molds is configured to be slidable left and right about a horizontal axis. At the rear end of one of the pair of split molds that are adjacent to each other on the left and right, a tooth tip piece that is disposed so as to be slidable back and forth along the side surface of the one split mold is driven back and forth. An actuator is attached thereto, and a storage recess for storing the tooth tip piece in a retracted position is formed on a side surface of the other split mold opposite to the side surface of the one split mold.

[Functions and effects of the invention]

According to this configuration, when adjacent split molds are brought into close contact with each other from side to side with the tooth tip piece retracted relative to the split mold, the tooth tip piece fits into the storage recess in the other split mold. The width dimension of the bent mold can be set with the dimension without the tip piece, and when the adjacent split molds are brought into close contact with each other while the tip piece is moved forward by the operation of the actuator, the tip of the tooth tip It is possible to form a bent mold whose width is larger by the thickness.

In addition, since the tooth tip piece is simply moved back and forth relative to the split mold, there is no need to raise the entire bending mold significantly relative to the lower mold when adjusting the width dimension of the bending mold. The time needed to adjust the width of the folding mold can be shortened by not raising the mold too much, and the retracted tooth tip piece can be easily stored in the storage recess on the rear side of the adjacent split mold. Even if the width of the piece is large, the width of the entire bending mold can be shortened.

Therefore, according to the present invention, the width adjustment work of the folding mold can be done quickly, and the height and width dimensions of the folding device can be reduced, and the entire device can be made compact. play.

〔Example〕

Next, to explain the embodiment of the present invention, the first embodiment
In the figure, reference numeral 2 denotes an upper body having a downward U-shaped cross section in a gate-shaped frame 1 of the press machine, and reference numeral 3 suspends it from the lower surface of the upper body 1 via a hydraulic cylinder 4.
In addition, each of the mold suspension frames pressed downward by a pressure rod 5 with a hydraulic cylinder 5a is shown, and a bending die 6 as an upper mold is attached to the mold suspension frame on the lower surface side of the mold suspension frame 3. It fits onto the horizontal shaft 7 supported on both left and right sides of the body 3.

Reference numeral 8 denotes a lower die, numeral 1, which holds a workpiece 9, which is a plate material to be processed, between the bending die 6, which is the upper die.
0 indicates a movable mold for bending the workpiece 9 by moving up and down on the front edge side of the lower mold 8 and the upper mold 6, which are the folding molds.

The bending mold 6 includes a split mold 11 at the end fixedly fitted to the base end side of the horizontal shaft 7, and a plurality of split molds 11 (in the embodiment) fitted to the horizontal shaft 7 so as to be slidable along its axis. 3
) split mold 12, and these split molds 11 and 1
It consists of a tooth tip piece 13 with a thin thickness dimension inserted between the two and 12, and a large number of adjustment molds 14 with the same thickness dimension and slidably arranged on the sides of the divided molds.

Each of the molds 11, 12, 13, 14 is provided with a shaft hole 15 through which the horizontal shaft 7 passes,
A key shaft 17 for maintaining posture arranged parallel to the horizontal shaft 6
An auxiliary hole 16 is also drilled through which the split mold 12 is inserted.
The adjustment die 14 is configured to be slidable along the horizontal axis 7.

In the embodiment, the tip thickness dimensions a1, a2, and a3 of the three tooth tip pieces 13 inserted between the end split mold 11 and the adjacent split molds 12 are constant from the side closest to the split mold 11. Set the pitch to be large.

For example, when the thickness dimension of the adjustable mold 14 is b,
Tip thickness dimension of the thickest tip piece 13 =
(a3) = (b/2), and the next thinner tooth tip piece 1
Thickness dimension of the tip of tooth 3 (a2) = (half of a3), Thickness dimension of the tip of tooth tip of tip piece 13 (a1) = (a2), which is very thin
By setting the length dimension of the bending die 6 to be half of the above-mentioned dimension (a1), the length dimension of the bending die 6 can be adjusted by the pitch of the dimension (a1).

Reference numeral 18 indicates the end split mold 11 and the other split mold 1.
A guide groove formed longitudinally in one side of 2,
Reference numeral 19 indicates a guide plate provided in the middle of the guide groove 18 to prevent it from falling off, and reference numeral 20 indicates this guide groove 1.
The piston rod 20 of the actuator 20 is an actuator such as an air cylinder that is attached via a bracket 21 to the rear surface of the split molds 11 and 12 provided with the piston rod 20.
a is fixed to the rear end of the tooth tip piece 13 with a screw, etc., and each tooth tip piece 1 is fixed by the actuator operation.
3 is driven forward and backward.

Reference numeral 22 denotes a storage recess formed on the rear side of the opposing side surface of the split mold 12 adjacent to the one split mold 11 or 12, and this storage recess 22
The front end of is set at a position a distance (l1) from the front end of each split mold 11, 12.

Reference numeral 23 denotes an engaging portion that can be engaged with an engaging protrusion 24 protruding from the other side of each tip piece 13, and a guide body that fits into the guide groove 18 is provided on one side of each tip piece 13. 25, and a longitudinal longitudinal groove 26 into which the upper end of the guide plate 19 fits, and on the other side of each tooth tip piece 13, the vertically elongated engagement protrusion 24 and a dimension (l1) from the tip of each tooth tip piece 13 are provided. ) is provided with a stopper portion 27.

Reference numerals 28a, 28b, and 28c denote engagement holes 29a, 29b, and 29c whose base ends are fixed to the front surface of one of the split molds 11 and 12 with bolts or the like, and which are recessed in the front surface of the other split mold. A connecting piece configured to fit a bent end claw into each engagement hole 2.
The length dimensions on both the left and right sides of 9a, 29b, and 29c are set to be longer than the thickness dimension of the tip of the tooth tip pieces 13, 13, 13 at the corresponding locations, and shorter than the thickness dimension of each stopper portion 27. do.

Reference numeral 30 denotes an air actuator for moving left and right the fourth divided mold 12 from the end divided mold 11 among the four divided molds connected by the three connecting pieces, and the piston rod of the air actuator 30 When the split mold 12 to which the piston rod is attached moves by protruding the piston rod, the rear split molds 12, 12,
From the relationship with the engagement holes 29c, 29b, 29a into which the tip claws of the connecting pieces 28c, 28b, 28a in 11 fit, excluding the split type 11 with fixed end positions,
The three movable split molds 12 can each be moved with appropriate gaps left on the sides (8th
(see figure).

Conversely, when the piston rod of the air actuator 30 is retracted, the adjacent split dies 11 and 12
The sides of the plates can be moved to a position close to each other (see Figure 7).

Note that even if there is a gap between the adjacent split molds 11 and 12, the front end surface of the stopper portion 27 at the rear end of each tooth tip piece is designed to interfere with the front end surface of the storage recess 22 in the opposing split mold. (Tooth tip piece 13
When the tip piece 13 is moved forward, the stopper portion 27 sets the tip piece 13 in a state in which it cannot move forward any further.

Reference numeral 31 indicates a pair of left and right claws 32, 32 inserted from the rear side of the split mold 14 at an arbitrary position among the plurality of adjustment molds 14, and one of the plurality of adjustment molds 14 is moved in the direction of the split mold 12. This is a separation means for forming an appropriate passage gap between the workpiece 9 and the remaining adjustment mold 14 into which one side rib of the workpiece 9 can fit.

The moving frame 33 to which the separating means 31 is attached is screwed into a threaded shaft 34 arranged parallel to the rear of the horizontal shaft 7, and is moved laterally along a guide rail 35 arranged on the lower surface of the portal frame 1. A control motor 3 configured to be movable and driven by a command from a control device (not shown)
By rotating the screw shaft 34 in the forward and reverse directions at step 6, the pair of pawls 3 in the separating means 31 are rotated.
A pair of left and right pawls 32, 3 are arranged so that the left and right claws 32, 3 are located behind the arbitrary position adjustment 14, and a hydraulic cylinder 37 for longitudinal movement attached to the moving frame 33
2 is divided into the grooves 14 on the rear surface of the adjustment mold 14.
integrally move back and forth so as to fit into or disengage from a,
The pair of left and right pawls 3 are opened and closed by the opening/closing hydraulic cylinder 38.
2 and 32 can be moved to the left and right to spread apart.

In this configuration, as shown in FIGS. 5 and 6, a guide groove 18 on one side of one of the left and right divided molds 11, 12, 12
When the piston rod of the air actuator 30 is retracted with the guide body 25 on one side of the tip piece 13 fitted and the piston rod 20a of the actuator 20 retracting the tip piece 13, as shown in FIG. As shown, the tooth tip pieces 13, 13,
13, the opposing sides of each split mold can be brought into close contact with each other.

Next, as shown in FIG. 8, the piston rod of the air actuator 30 is made to protrude and
1 and 12 so that a gap is created between each tooth tip piece that is larger than the thickness of the tooth tip and shorter than the thickness of the stopper part 27, and then move any tip piece toward the front end of the split mold. Move it forward (Figure 9 shows the state in which three tooth tip pieces are advanced).

When the tooth tip piece is advanced in this manner, the front end surface of the stopper portion 27 of the tooth tip piece comes into contact with the front end surface of the storage recess 22, and the tooth tip piece does not advance any further.

After this, when the piston rod of the air actuator 30 is moved backward, at the point where the tip piece has moved forward, the engaging protrusion 24 of each tip piece is fitted into the engaging part 23 of the other split mold, and the left and right parts are separated. Since the molds 11, 12 or 12, 12 are in close contact with each other with the tooth tip piece 13 sandwiched between them (see Fig. 10), the width of the entire bending mold 6 is increased by the thickness of the tooth tip in that tooth tip piece. It will become.

Further, the adjustment mold 14 can be moved by using the separating means 31 to move a predetermined number of sheets in the direction of the divided mold 12 and bring it into close contact with the side surface thereof.

In addition, in this example, three tooth tip pieces 1
The tooth tip thickness dimensions of 3, 13, and 13 are 2.5 mm, 5.0 mm,
If there are 3 types of 10mm, by combining 1 to 3 of these, you can make 8 with a pitch of 2.5mm from 0mm to 17.5mm.
It becomes possible to adjust the thickness dimension in stages, and if the width dimension (b = 20 mm) of each of the plurality of adjustment molds 14 is
The thickness of the bending mold 6 can be adjusted with a pitch of 2.5 mm.

After that, the folding die 6 is lowered together with the movable die suspension frame 3 to sandwich the workpiece 9 between it and the lower die 8, and the front edge of the workpiece 9 is folded as the movable die 10 rises. It is possible to form a song.

By sequentially selecting the number of tooth tip pieces 13 and adjustment molds 14 that should be brought into close contact with the side surfaces of the split molds 11 and 12 as described above, the distance between the pair of left and right side ribs 9a of the workpiece 9 can be significantly changed. Even if it is done,
A bending mold 6 corresponding to this can be provided, and in this case, the split molds 11 and 12 are connected to the horizontal axis 7.
Since there is no need to extract the mold from the mold, the preparation work for setting the mold dimensions is also extremely simple.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a front view of the main parts of the bending device, FIG. 2 is a partially cutaway side view of FIG. 1, and FIG. 4 is an enlarged cross-sectional view of FIG. 3, FIGS. 5 and 6 are perspective views of the split die and tooth tip piece, and FIGS. 7 to 10 are split views. A bottom view showing the positional relationship between the mold and the tooth tip piece, FIG. 7 is an explanatory diagram of the tooth tip piece in a retracted state, and FIG.
The figure is an explanatory diagram of a state in which the split molds are separated, FIG. 9 is an explanatory diagram of a state in which the tooth tip piece is advanced, and FIG. 10 is an explanatory diagram of a state in which the advanced tooth tip piece is held between the divided molds. . DESCRIPTION OF SYMBOLS 1...Gate-shaped frame, 2...Upper body, 3...Model hanging frame body, 6...Bending type, 7...Horizontal shaft, 8...Lower mold, 9...Work, 10...Movable Type, 11, 12
...Divided type, 13...Tooth tip piece, 14...Adjustable type, 15...Shaft hole, 18...Guide groove, 19...
Guide plate, 20... Actuator, 21... Bracket, 22... Storage recess, 23... Engagement split type, 24... Engagement protrusion, 25... Guide body, 27
... Stopper part, 28a, 28b, 28c ... Connection piece, 29a, 29b, 29c ... Engagement hole, 30
...air actuator, 31...separation means,
32...Claw body.

Claims (1)

[Scope of utility model registration request] In an apparatus for bending a workpiece plate material such as a metal plate with a bending mold, the bending mold is formed by at least a plurality of divided molds and a tooth tip piece with a thin tooth tip inserted between each of the divided molds. each split mold is mounted so as to be able to slide left and right on a horizontal axis, and a rear end of one of the pair of split molds adjacent to each other on the left and right is provided with a An actuator for driving a tooth tip piece disposed so as to be slidable back and forth along the side surface is installed back and forth, and the tooth tip piece is moved backward on the side surface of the other split mold that is opposite to the side surface of the one split mold. A folding device characterized in that a storage recess is formed for storage at a certain position.