JPH06252B2 - Folding type - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention, when bending a plate material to be processed such as a metal side plate used for a wall panel, a cabinet, etc., according to a lateral width dimension of the plate material to be processed. Thus, the present invention relates to a bent structure whose width can be changed.

[Prior Art and its Problems] As shown in FIG. 1, the left and right edges of a plate material 1 having a rectangular shape in a plan view used for wall panels, cabinets, etc. are bent to have a cross section of about 90 degrees. After the ribs 2 and 2 are formed, when the ribs 2 and 2 are bent so that the side edges 3 perpendicular to the ribs 2 and 2 are raised by 90 degrees, the left and right ribs 2 and 2 are formed.
It is necessary to use a bending die having a width dimension (l) that matches the distance between the inner surfaces of 2.

In this case, the folding dies are combined with a group of adjustment dies of thin width dimension and a group of separation dies of appropriate hot width dimension, and these dies are closely fitted together to form a folding die of a predetermined width dimension. I am trying.

However, due to the accuracy error of the bending process, the distance between the inner side surfaces of the side ribs 2, 2 on both the left and right sides varies, and the error size is generally smaller than the width size of the adjustable type. . Therefore, when there is a dimensional error smaller than the thin width dimension of the adjustment die, if one adjustment die is added, the width becomes much larger than the width dimension (l) and the bending die cannot be processed. Remove one adjustment mold so that the bending mold fits perfectly between the left and right ribs 2 and 2.
A gap having a size considerably large with respect to the size error is generated between the inner surface of the one side rib 2 and the end portion of the side edge 3 or the like is formed at an accurate angle or a position without a bending shape. The shape cannot be bent.

These are problems caused by the inability to easily finely adjust the width dimension of the folding die.

Further, as a means for selectively adjusting the size of the bending die according to the size of the bent portion whenever the lateral width of this type of plate material is different, the Japanese Patent Publication No. 61-16 of the prior art is provided.
In Japanese Patent Laid-Open No. 203-203, the bending die is composed of a group of a plurality of adjusting dies having a thin width dimension, a group of a plurality of dividing dies having a thick width dimension, and a pair of left and right end dies sandwiching these, and A mold and a split mold are fitted on a horizontal axis arranged at the rear part of the upper mold body and reversibly attached to the lower part of the upper mold body, and an arbitrary number of adjustment molds and split molds can be inverted by approximately 180 degrees. After pulling backward from the lower surface of the upper mold body, the remaining molds are slid along the axis of the horizontal axis by the pair of left and right end molds so as to be a bent mold having a predetermined width. It is disclosed to configure.

According to this configuration, the length of the width dimension of the bending die is adjusted by dividing the large width dimension of the split die by the number of extracted pieces and the small width dimension of the adjustable die by the extracted number of pieces. It is possible to adjust the width dimension stepwise for each so-called unit width dimension for each dimension equivalent to the sum,
In adjusting a size smaller than that of the adjustment mold having the thin width, it was necessary to separately incorporate a group of the adjustment mold having a small width.

Further, in the above-mentioned prior art, the width dimension of the folding mold is set to a predetermined value by closely adjoining the side faces of adjacent molds without forming a gap between the adjusting mold and the split mold in the folding mold. It was usually set so that

By the way, as a result of various experiments, the present inventor has found that when the size of the gap between two adjacent molds is slightly smaller than the thickness of the plate material to be processed, the presence of the gap causes the bending process. It was discovered that there is no inconvenient deformation such as narrowing down at the bent edge of the plate to be processed.

The present invention has achieved means for solving the above problems by utilizing the above phenomenon, and one of the objects thereof is to enable fine adjustment of the width dimension of a bending die due to a manufacturing error that occurs during bending processing. Another purpose is to be able to provide a folding mold of any width dimension.

[Means for solving problems]

Therefore, a first aspect of the present invention is a bending die in which the width dimension can be adjusted according to the width dimension of a plate material to be processed. In the bending die, a regulation die is slid by an appropriate dimension in an axial midway portion of a horizontal axis whose end die is positionally fixed. The regulating die is movably fitted, and the regulating die is urged away from the end die by a spring inserted in the horizontal axis, and a large number of appropriate width dimensions are provided between the regulating die and the end die. A pair of gap adjusting dies are slidably fitted, and adjacent gap adjusting dies are slidably connected to each other so that the maximum value of the adjacent gaps is regulated, while at least the adjacent gaps. A gap spring for urging the adjusting dies so as to increase the gap therebetween is interposed between the adjusting dies, and the regulating die is pressed in the end die direction. A second aspect of the invention is the configuration of the first aspect of the invention. In addition, on the horizontal axis at a position opposite to the gap adjusting type with the regulation type interposed therebetween,
Separation means that slidably fits a plurality of split dies, and an arbitrary number of the split dies are brought into contact with the regulation die to form an appropriate gap with the remaining split dies. Is provided, and the split mold is integrally pressed in the direction of the end mold.

[Operation and effect of the invention]

According to the first aspect of the present invention, the group of a large number of gap adjusting dies slidably fitted on the horizontal axis is located between the end die and the regulation die,
A gap spring that urges the gap adjustment dies in a direction of increasing the gap size is interposed between the gap adjustment dies, and the adjacent gap adjustment dies are regulated in the maximum size of the adjacent gaps. Since they are connected and the regulation die is urged by a spring in a direction away from the end die, the maximum gap in which the gap between each gap adjustment die is regulated when the regulation die is not pressed toward the end die. Can be extended to.

Therefore, the maximum width dimension (l1) of the folding type is a state in which the above-mentioned gap dimension is maximum. That is, the width dimension (a) of the end mold,
Number of gap adjustment molds (n) x its width dimension (b), maximum regulated gap dimension (e0) x number of gaps (m), and regulation die width dimension (c)
And the maximum width dimension of the bent type [l1 = a + (n × b) + (m × e0) + c].

On the contrary, if the regulation die is pressed in the end die direction so that the gap between the side faces of each adjacent die becomes 0, the minimum width dimension (l2) of the folding die is 0 when the gap dimension is 0. Yes, that is, the width dimension of the end die (a) and the number of gap adjustment dies (n) x their respective width dimensions (b)
And the width dimension (c) of the regulation type is the minimum width dimension [l2 = a + (n × b) + c] of the bending type, and the regulated maximum gap dimension (e0) × the number of gaps. It can be shortened by the width corresponding to (m).

At the intermediate pressing force, the clearance springs inserted between the adjacent clearance adjustment dies contract, so the clearance dimension (e1) between adjacent clearance adjustment dies becomes smaller than the above dimension (e0). ,
The bending die can be made shorter than the maximum width dimension by a dimension obtained by multiplying this by the number of gaps.

In this way, it is possible to perform fine adjustment to obtain an arbitrary width dimension between the maximum width dimension (l1) and the minimum width dimension (l2) depending on the magnitude of the pressing force.

Therefore, by increasing the number of the gap adjusting dies, the number of gaps can be increased and the width dimension that can be finely adjusted can be arbitrarily increased.

Moreover, the above-mentioned restricted maximum clearance dimension (e0) is such that unevenness such as uneven wrinkles does not occur at the bending edge due to the presence of the clearance during bending, and the clearance at one location Since it is not so large that it becomes inconvenient during the bending process, neither shape error nor defect of the bending process occurs.

According to the second aspect of the invention, a plurality of split dies are slidably fitted on the horizontal axis on the side opposite to the gap adjusting die with the restriction die sandwiched therebetween, and any number of the plurality of split dies is placed on the regulation die side. Since the separating means is provided so as to be positioned and to form an appropriate gap with the remaining split dies, the split dies are integrally and collectively pressed toward the end dies. Similarly to the first invention, it is possible to adjust a minute gap between the gap adjusting dies, and it is possible to adjust the entire width dimension of the bending die over a minute range, and at the same time, divide the die with an appropriate width dimension (d). By closely adhering to the regulated die, the distance from the end die to the side surface of the closely attached split die is adjusted to the width dimension of the plate material to be processed, and the unit width dimension (d) of the split die Large, step-wise adjustment of width dimension to increase or decrease overall width dimension It made.

Therefore, an end die having a predetermined width dimension, a gap adjusting die,
Only the four types of the regulation type and the split type have a remarkable effect that the width dimension of the bending type can be adjusted steplessly to the extent possible.

In any of the present invention, the end die, the gap adjusting die, the regulating die, and the separating die can adjust the width dimension of the entire folding die while being slidably fitted on the horizontal axis, and therefore, as in the conventional case. There is no need for the work of pulling out the adjustment mold from the bending mold, and since the structure for holding the posture of the extracted mold at that position is also unnecessary, the structure can be simplified and the space for that is also unnecessary. This has the effect of making the entire device compact.

〔Example〕

Next, a description will be given of an embodiment of the present invention. Reference numeral 4 in FIG. 2 indicates a bending die as an upper die in a press machine, and the bending die 4 is provided between front portions of a pair of left and right arms 5 and 5. An end die 7 fixed to the supported horizontal shaft 6, and a large number of gap adjusting dies 8 that are slidably fitted on the horizontal shaft 6 along the axis thereof.
It consists of a regulation type and a large number of divided types 10.

A shaft hole 1 through which the horizontal shaft 6 is passed through each of the molds 7, 8, 9 and 10.
Each of the molds 7, 8, 9 and 10 is slidably movable along a longitudinal key 11 attached to the horizontal shaft 6.

An oval pin hole 14 is bored so as to intersect with a long internal hole 13 that opens at one end of the horizontal shaft 6, and a knock pin 15 fixed to the regulation die 9 penetrates the pin hole 14 and It is configured to be slidable along the axis by an appropriate dimension (f). Further, one end of the compression spring 16 fitted and inserted in the internal hole 13 is brought into contact with the knock pin 15, and the other end is pressed by a plug body 17 screwed into one end opening portion of the internal hole 13, so that the regulation mold 9 is pushed. It is configured so as to be urged away from the end die 7.

As shown in FIG. 6 and FIG. 7, the end die 7 is a block having a width dimension (a) and a height dimension (H1) along the axis of the horizontal axis 6, and the end die 7 has a front lower end portion and a rear surface. Edge fittings 18 and 19 for forming predetermined bent edges on the side edges 3 of the plate material 1 to be processed are bolted to the upper end portion.

Reference numeral 20 is a female screw portion for fixing the end die 7 to the horizontal shaft 6 in a positionally fixed manner by bolts, and the gap adjusting dies 8 and 8 are connected to a gap regulating sleeve 21 as described later in detail. The bolts 22 are connected so as to be slidable with each other and the maximum clearance dimension (e0) is restricted (the clearance dimension e can vary from 0 to e0), and a clearance spring 23 is further inserted.

Reference numeral 24 denotes a ring-shaped hydraulic cylinder for pressing the split dies 10 in the direction of the end dies 7, and reference numeral 25 denotes left and right from the rear surface direction of the split dies 10 at any position of the multiple split dies 10. Inserting the pair of claws 26, 26, one of the plurality of split dies 10 is brought into close contact with the regulation die 9, and one side rib 2 of the plate material 1 is fitted between the rest of the split dies 10. It is a separating means for forming a proper (g) passage gap portion 27 that can be formed.

Numerals 10a, 10a are concave grooves formed at the rear corners and front corners of the split molds 10 at the upper and lower mid-height positions, respectively, so that the claw bodies 26 can be fitted therein (see FIG. 10). And FIG. 11).

The moving frame 29 to which the separating means 25 is attached is screwed onto a screw shaft 28 arranged in parallel behind the horizontal shaft 6, and is arranged on the lower surface of the upper frame 30 in parallel with both shafts 6, 28. A pair of pawls in the separating means 25 is configured to be laterally movable along the guide rails 31 and a control motor 32, which is driven by a command from a control device (not shown), appropriately rotates the screw shaft 28 forward and backward. 26, 26 are arranged so as to be located behind the split mold 10 at the arbitrary position, and the moving frame 29
A pair of left and right pawls 26, 26 are integrally moved forward and backward by a hydraulic cylinder 33 for forward and backward movement so as to be fitted in or disengaged from the recessed groove 10a on the rear surface of the split mold 10. The pair of left and right claw bodies 26, 26 can be moved so as to be separated from each other in the left and right directions.

In the gap adjusting mold 8 in this embodiment, the one shown in FIG. 12 and the one shown in FIG. 14 having a symmetrical shape with this are alternately arranged.

For example, when a total of 40 gap adjusting dies 8 are used, the ones shown in FIG. 14 are used for the odd-numbered positions and the ones shown in FIG. As will be understood with reference to FIGS. 19 and 20, the side surface of the die 8 faces the concave portion 36 with the female screw portion 35 on the side surface of the one side gap adjusting die 8 and the other side gap adjusting die 8 A large-diameter seat hole 38 with a sleeve hole 37 on each side surface, and a small hole 39 into which one end of the gap spring 23 fits on each side.
To provide.

And, in the large diameter seat hole 38 with each sleeve hole 37,
The connection bolt 22 is fastened to the female screw portion 35 of the adjacent gap adjusting die 8 in a state in which the gap regulating sleeve 21 with the large diameter seat 21a is slidably inserted. At this time, the foot of each gap regulating sleeve 21 projects by the dimension (e0) to regulate the maximum value of the gap between the adjacent gap adjusting dies 8 and the head of the connecting bolt 22. The parts can fit into the recesses 36 of the mating gap adjusting mold 8 without interference.

Further, in this embodiment, the first gap adjusting die 8 and the regulation die 9 are provided.
And the 40th gap adjusting die 8 and the end die 7 are also connected by the gap regulating sleeve 21 and the connecting bolt 22 having the same configuration as described above, and the gap between the adjacent die is A gap spring 23 that biases the gap so as to increase is inserted.

In the present embodiment, the width dimension of the end die 7 (a = 100 m
m), the dimensions of each of the 40 gap adjusting dies 8 (b = 20 mm),
The maximum gap size (e0 = 0.5 mm), the width dimension of the regulation die 9 (c = 40 mm), the width dimension of each of the 59 split dies 10 (d =
40 mm), there is a gap of 4 from the end die 7 to the regulation die 9.
The lateral width dimension (f) of the pin hole 134 is determined so that the regulation die 9 can be moved left and right by one position, and the regulation die 9 can move laterally by the maximum clearance dimension (e0) × 41.

In this configuration, when the ring-shaped hydraulic cylinder 24 is not operated, the regulation die 8 moves so that the regulation die 9 separates from the end die 7 via the spring 16 and the knock pin 15 in the horizontal shaft 6, and A gap having a maximum gap size e0 = 0.5 mm exists between the gap adjusting dies 8 located between the dies 7 and 9 due to the biasing force of the gap spring 23, and the total gap size is Is 20.5 mm.

Then, the separating means 25 inserts a pair of claws 26, 26 into the concave grooves 10a, 10a at the rear end of the two adjacent split dies 10 at arbitrary positions, and the width (g) is appropriately set.
When the ring-shaped hydraulic cylinder 24 is pressed from the side surface of the split die 10 at the end in the direction of the end die 7 in this state, the split die 10, the regulating die 9 and the gap adjusting die 8 are simultaneously pushed. Although it moves in the direction of the end die 7, depending on the magnitude of the pressing force of the hydraulic cylinder 24, the elastic force of the spring 16 and all the gap springs 23 causes the regulating die 9 and each gap adjusting die 8 to move.
And a uniform gap dimension (e1 <e0) exists between and (see FIG. 20).

In addition, the pressing force of the hydraulic cylinder 24 is increased to increase the regulation type 9
If the side faces of the gap adjusting die 8 and the end die 7 are pressed so as to come into close contact with each other, the regulation die 9 will result in one gap adjusting die 8
This means that the end mold 7 has moved by a distance of 20.5 mm, which is larger than the width dimension of 20 mm (see FIG. 19).

In this way, the width dimension of the folding die 4 can be adjusted steplessly according to the pressing force of the hydraulic cylinder 24.

Thereafter, the folding die 4 is lowered together with the vertically movable upper frame 30 to sandwich the plate material 1 to be processed with the table 50, and the side edge 3 of the plate material 1 can be vertically moved to the side end of the table 50. It is possible to bend the side edge 3 upward by about 90 degrees along the lower edge of the bending die 4 by facing the edge bending die 51 and raising the edge bending die 51.

In a device that does not have the split mold 10, a long sleeve is loosely fitted to the horizontal shaft 6 between the hydraulic cylinder 24 and the restriction mold 9, and the pressing force of the hydraulic cylinder 24 is applied via the sleeve to the restriction mold 9. Is transmitted to the end die 7, or the one pawl 26 driven by the opening / closing hydraulic cylinder 34 instead of the hydraulic cylinder 24 is directly attached to the side surface of the regulating die 9. The end die 7 may be pressed in the direction of the end die 7 and pressed.

Even if the distance between the pair of left and right side ribs 2 of the plate material 1 is significantly changed by sequentially selecting the number of the split dies 10 that should be in close contact with the side surface of the regulation die 9 as described above. It is possible to provide the bending die 4 corresponding to this, and at this time, it is not necessary to pull out the split die 10 from the horizontal shaft 6, so that the setup work for setting the die dimensions is extremely simple. .

As shown in FIG. 2 and FIG. 22, the pair of left and right arms 5 and 5 of the device are attached to the reference rotation fulcrum shaft 41,
It is mounted so as to be vertically rotatable around 41, and the middle portions of both arms 5 and 5 are configured to be vertically movable by suspension supports 42 and 42, while one end of a horizontal shaft 6 supporting the bending die 4 and If the belt 44 is wound between the belt pulleys 43, 43 respectively attached to the one rotation fulcrum shaft 41, and the belt can be rotationally driven by the driving means 45 such as a rotary hydraulic cylinder, By appropriately lowering the left and right suspension supports 42, 42, the folding die 4 supported by the horizontal shaft 6 together with the left and right arms 5, 5 as shown by the alternate long and short dash line in FIG. Move away from the guide rail 46. In this state, when the belt 45 is rotated by the driving means 45,
As shown by the chain double-dashed line, since the folding die 4 can be turned upside down, the arms 5 and 5 are pulled up again to move the folding die 4 to the upper frame 30.
And the trapezoidal guide rail 46.

In this case, the work of extracting these dies from the horizontal shaft 6 is performed by making the respective upper and lower edge portions of the end die 7, the gap adjusting die 8, the regulating die 9 and the split die 10 different in shape as described above. Since it becomes the same as when the mold is replaced without using the mold, it becomes extremely easy to change the bending shape of the side edge 3 of the plate material 1 to be processed into two types.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a perspective view of a material to be processed, Fig. 2 is a plan view of the apparatus, and Fig. 3 is III-I of Fig. 2.
II side view, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, and FIG.
Figure is a partial cutaway cross-sectional view of the horizontal axis, Figure 6 is a rear view of the end mold,
FIG. 7 is a side view of VII-VII of FIG. 6, FIG. 8 is a side view of the regulation type, FIG. 9 is a rear view of IX-IX of FIG. 8, and FIG. FIG. 11 is a rear view as seen from XI-XI in FIG. 10, FIG. 12 is a side view of the gap adjusting type, and FIG.
XIII-XIII rear view of the figure, FIG. 14 is a side view of the gap adjusting type, FIG. 15 is a rear view of the XV-XV of FIG. 14, and FIG. 16 is an enlarged sectional view of the XVI-XVI of FIG. FIG. 17 is an enlarged sectional view taken along the line XVII-XVII in FIG. 12, FIG. 18 is a sectional view in the vicinity of the regulation die, FIG. 19 is a sectional view when the gap adjusting die is in a close contact state, and FIG. FIG. 21 is an enlarged sectional view taken along the line XXI-XXI of FIG. 2, and FIG. 22 is an enlarged side sectional view taken along the line XXII-XXII of FIG. 1 ... Work plate material, 2, 2 ... Side ribs, 3 ... Side edges, 4 ... Bend type, 5, 5 ... Arm, 6 ... Horizontal axis, 7 ... End type, 8 ... Gap adjusting type, 9 ... Regulation Mold, 10 ... Split mold, 10a ... Recessed groove, 1
DESCRIPTION OF SYMBOLS 1 ... Key, 14 ... Pin hole, 15 ... Knock pin, 16 ... Compression spring, 17 ... Plug body, 21 ... Gap control sleeve, 22 ...
Connection bolt, 23 ... gap spring, 24 ... hydraulic cylinder,
25 ... Separation means, 26 ... Claw body, 28 ... Screw shaft, 30
... upper frame, 31 ... guide rail, 46 ... trapezoidal guide rail, 32 ... control motor, 33 ... longitudinal hydraulic cylinder, 3
4 Open / close hydraulic cylinder.

Claims (2)

[Claims] 1. A bending die whose width can be adjusted in accordance with the width of a plate material to be processed. A regulating die can be slid by an appropriate dimension on an axial midway portion of a horizontal shaft whose end die is positionally fixed at one end. The regulating die is urged away from the end die by a spring inserted into the horizontal axis, and a large number of sheets having an appropriate width dimension are provided between the regulating die and the end die. A gap adjusting die is slidably fitted, and adjacent gap adjusting dies are slidably connected to each other so that the maximum value of the adjacent gap is regulated, and at least the adjacent gap adjusting die A gap spring that urges each other to increase the gap is inserted between
A bending die, characterized in that the regulation die is pressed toward the end die. 2. A bending die whose width can be adjusted in accordance with the width of a plate material to be processed. A regulating die can be slid by an appropriate dimension on an axial midway portion of a horizontal shaft whose end die is positionally fixed at one end. The regulating die is urged away from the end die by a spring inserted into the horizontal axis, and a large number of sheets having an appropriate width dimension are provided between the regulating die and the end die. A gap adjusting die is slidably fitted, and adjacent gap adjusting dies are slidably connected to each other so that the maximum value of the adjacent gap is regulated, and at least the adjacent gap adjusting die A gap spring that urges each other to increase the gap is inserted between
A plurality of split dies are slidably fitted on the abscissa at positions opposite to the gap adjustment dies with the regula- tion die sandwiched therebetween, and any number of the split dies is regulated among the plurality of split dies. A bending die, characterized in that it is provided with a separating means which comes into contact with the die and forms an appropriate gap between the remaining die and the die so as to integrally press the die toward the end die.