JPH0416277B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) This invention relates to a long-scale material press that bends or punches a long-scale plate-shaped workpiece along its longitudinal direction. Regarding processing equipment.

(Prior Art) As is well known, a press working device for bending a metal plate, for example, has a cross section approximately V on a table.
In addition to installing a lower mold with a letter-shaped groove,
An upper mold having a protrusion that is loosely fitted into the groove of the lower mold is installed on the movable ram. Then, the movable ram is lowered by a flywheel, a hydraulic cylinder, etc., and the metal plate is compressed between the upper die and the lower die, thereby performing the bending.

However, when such conventional press processing equipment uses a flywheel, it requires a crank mechanism to convert rotational force into reciprocating motion, a clutch mechanism that connects and disconnects the transmission of the rotational force of the flywheel to the crank mechanism, and A brake mechanism, etc. is required, which results in a complicated and large structure, which results in a large weight.There are also problems in that the number of sliding and rotating parts increases, resulting in severe wear and tear of the parts. In addition, in normal use, the motor for rotating the flywheel is often constantly rotating, resulting in an economical disadvantage. Furthermore, with conventional press processing equipment, each time the thickness or bending angle of the metal plate is changed, the distance between the lower mold and the upper mold must be finely adjusted, which is inconvenient in terms of handling. It's summery.

In particular, when bending a long-scale metal plate along its longitudinal direction, the sizes of the table, lower die, movable ram, upper die, etc. It is necessary to set it according to the length. By the way, as a conventional press working apparatus for bending such a long scale metal plate, there is one in which a movable ram is lowered by hydraulic cylinders provided at both ends thereof. For this reason, when the upper die squeezes the metal plate, a bend occurs in the center, making it impossible to apply uniform pressure over the entire length of the long scale metal plate.
A problem arises in that accurate bending cannot be performed.

Therefore, recently it has been considered to place a hydraulic cylinder in the center of the long scale movable ram, but it is still not practical enough in terms of applying pressure uniformly over the entire long scale metal plate. It is something that is lacking. It has also been considered to arrange multiple hydraulic cylinders in the longitudinal direction of the movable ram, but this would complicate the configuration and increase the size, resulting in an economical disadvantage. Another problem is that it becomes difficult to control the plurality of hydraulic cylinders so that pressure is applied uniformly.

(Problems to be Solved by the Invention) As described above, the conventional press processing equipment for long-scale materials has a complicated structure, large size, and heavy weight, which is economically disadvantageous and inconvenient to handle. However, it still has the problem that it cannot be said to be fully put into practical use.

Therefore, this invention was made in consideration of the above circumstances, and is an extremely good long-scale material that has a simple structure, is suitable for small size and light weight, is economically advantageous, is easy to handle, and can be fully put to practical use. The purpose is to provide press processing equipment.

[Structure of the Invention] (Means for Solving the Problems) That is, the long-scale material press processing apparatus according to the present invention includes a long-scale table supported horizontally, and a long-scale table on the top surface of the table in the longitudinal direction. a long scale first processing member installed along the first processing member; a long scale connecting member set above the first processing member along the longitudinal direction and supported so as to be movable in the vertical direction; A long-scale second processing member is installed along the longitudinal direction of the lower surface of the connecting member and works together with the first processing member to process the long-scale material. A fixing member fixed in position along the longitudinal direction of the fixing member, and an urging force supported by the fixing member to pull the connecting member upward and separating the second processing member from the first processing member. a first platform member having a long scale and having a surface of a constant height installed on the lower surface of the fixed member along its longitudinal direction; and a first platform member installed on the upper surface of the connecting member along its longitudinal direction. , a long-scale second platform member having a surface at a constant height opposite to the surface of the first platform member, and a longitudinal direction between each surface of the first and second platform members. is interposed along the inside, expands when pressure fluid is injected into the inside, and pushes down the second processing member against the biasing force of the biasing mechanism;
A hose-like member that is used for processing with the first processing member and is made of a flexible material that has a jacket portion woven from thin synthetic resin threads and a rubber lining inside. and protection that is installed on the side surfaces of the first and second platform members and covers the hose-like member interposed between the first and second platform members from the outside, both when the hose is inflated and when it is not inflated. A control mechanism for injecting pressure fluid into the hose-like member and discharging the pressure fluid from the hose-like member.

(Function) According to the above configuration, by injecting and discharging pressure fluid into the hose-like member interposed between the first and second table-like members, the second processing Since the parts can be lowered and raised, there is no need for a flyhole or crank mechanism as in the past, and the simple structure allows for miniaturization and weight reduction, which is economically advantageous.
There are fewer sliding parts and rotating parts, allowing smooth operation with less wear and tear on parts. In addition, even if the thickness of the workpiece changes, as long as the pressure of the pressure fluid supplied to the hose-like member is within a certain range, there is no need to readjust the pressure each time, and this can be easily handled. , which can be easily handled. Furthermore, by injecting pressure fluid into one hose-like member, a uniform pressing force is applied to the entire second processing member, so that
Accurate pressing can be performed without causing partial bending or excessive bending.

In addition, the hose-like member is made of a flexible material with a rubber lining inside the jacket woven from thin synthetic resin threads, so it is strong enough to withstand frequent inflation and non-inflation. It can withstand enough. Furthermore, a protective member is installed on the side surface of the first and second platform members, and covers the hose-like member interposed between the first and second platform members from the outside when it is inflated and when it is not inflated. This prevents the hose-like member from moving inadvertently, and
Various measures have been taken in detail, such as protecting the hose-like member from foreign objects such as cutting debris and oil, and taking measures to prevent danger to workers, so that it can be put to practical use. It's something you get.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First, FIGS. 1a and 1b are a side sectional view and a front view, respectively, showing the overall configuration of a press working apparatus described in this embodiment. That is, reference numerals 11 and 12 in the figure are support pillars arranged perpendicularly to the floor (not shown). A long-scale fixing member 13 and a table 14 each having a substantially E-shaped cross section are installed horizontally between the upper end portions and the center portions of the support columns 11 and 12 in the figure.

Of these, the table 14 is
Lifting mechanism 1 installed at the lower end in figures 1 and 12
5 and 16, the horizontal position can be adjusted in the vertical direction in the figure. In addition, the above table 1
4, a long scale lower die 17, which is a first processing member, is fixed to the upper surface in the figure. in this case,
The lower die 17 is supported by screws (not shown) supported by a plurality of pairs (four pairs in the illustrated case) of fixtures 18 that are fixed oppositely between both sides of the table 14 on the upper surface in the figure. It is fixed to the table 14.

On the other hand, a long scale upper die 20, which is a second processing member, is attached to the support column 11,
It is installed so that it is constructed between 12 spaces. This press mechanism 19 has a function of moving the upper die 20 in the vertical direction in the figure, and by moving the upper die 20 in the downward direction in the figure, a long distance is created between the upper die 20 and the lower die 17. A scale metal plate (not shown) is squeezed and bent.

Here, FIGS. 2a and 2b are a side sectional view and a front view showing details of the press mechanism 19, respectively. That is, on the lower surface of the fixing member 13 in the figure, two long-scale frames 21, 21 having a substantially U-shaped cross section and forming the first platform member are arranged.
They are arranged and fixed in parallel along the longitudinal direction of the fixing member 13 so that their open ends are in contact with each other.

Further, around the frames 21, 21, a long scale slide member 2 is formed with a substantially U-shaped cross section so as to surround the frames 21, 21 from the lower side in the figure.
2 is placed. On the inner surface of the base of the slide member 22, there are two long-scale frames 23, 23 having a substantially U-shaped cross section and forming a second platform member.
but with their open ends touching,
They are arranged and fixed in parallel along the longitudinal direction of the slide member 22.

Here, one air hose 24 formed of a flexible material is interposed between the base rear surfaces of the frames 21, 21 and the base rear surfaces of the frames 23, 23. This air hose 24 is connected to a solenoid valve (not shown) via a connector 25 provided at its end, and is configured to inject compressed air into the interior and discharge compressed air from the interior. ing. This air hose 24 has a jacket part woven from thin threads made of synthetic resin.
A rubber-lined member is used, and is covered from the outside by both sides of the slide member 22 in a state in which compressed air is discharged.

On the other hand, collar portions 22a and 22b are formed at the opening of the slide member 22. Shafts 26 and 27 are loosely inserted into these flanges 22a and 22b, respectively. Further, the shafts 26 and 27 are inserted through the flanges 22a and 22b from the lower side in the figure, and then inserted into ring-shaped spacers 28 and 29, and plates fixed to the lower part of the fixing member 13 in the figure and protruding in the width direction. body 3
0 and 31, coiled springs 32 and 33, and a plate 34 fixed to the upper surface of the fixing member 13 in the figure and protruding in the width direction thereof, etc. are loosely inserted, respectively.

Here, among the shafts 26 and 27, the plate body 30,
Washers 35 and 36 are fitted in the portions between 31 and plate 34, respectively. The springs 32 and 33 are connected to the plates 30 and 3, respectively.
1 and washers 35 and 36. Further, thread grooves are formed in the lower portions of the respective shafts 26 and 27 in the drawings, and nuts 37 and 38 are screwed into the shafts 26 and 27 to contact the lower surfaces of the flanges 22a and 22b of the slide member 22 in the drawings.

Therefore, the slide member 22
2 and 33, it is always urged upward in the drawing. However, when the slide member 22 is moved upward in the figure, the flanges 22a and 22b are connected to the spacer 2.
8 and 29. Also,
The slide member 22 is movable downward in the figure against the urging force of springs 32 and 33.

Here, one edge portion of a connecting member 39 having a substantially E-shaped cross section is fixed to the central portion of the back surface of the base of the slide member 22 . At the other edge of the connecting member 39, a support 40 having a substantially L-shaped cross section,
The upper mold 20 is fixed via 41.

Further, both ends (only one end is shown in FIG. 2b) of the connecting member 39 are connected to the support columns 11 and 12 (only one support column 12 is shown in FIG. 2b) via a slide function 42. ) is connected to. This slide function 42 is configured as shown in FIG. 2c. That is, the end of the connecting member 39 is fixed to one end of the slide member 43. A protrusion 43a is formed at the center of the other end of the slide member 43.

On the other hand, a guide member 44 having a substantially U-shaped cross section is screwed onto the support column 12 with a screw 45 . This screw 45 also has the function of fixing a pad 46 loosely inserted inside the guide member 44.
The protrusion 43a of the slide member 43 is loosely inserted between the pads 46, and the position of the pad 46 is adjusted by the screw 47, so that the slide member 43, that is, the connecting member 39 is connected to the support column 1.
1 and 12, it is slidable.

In the above configuration, when compressed air is injected into the air hose 24 from the electromagnetic valve via the connector 25, the air hose 24 expands and the slide member 22 moves against the urging force of the springs 32 and 33. Moved downward in the figure. For this reason,
A metal plate (not shown) is compressed and bent between the upper die 20 and the lower die 17. Note that the air hose 24 is covered from the outside by both side surfaces of the slide member 22 even when inflated.

Thereafter, when the compressed air in the air hose 24 is discharged from the electromagnetic valve via the connector 25, the slide member 22 is moved upward in the figure by the urging force of the springs 32 and 33, and the upper mold 20 is moved to the lower mold. It is separated from 17, and the bending process of the metal plate is completed here. At this time, the frames 21, 21 and 2
3 and 23, a predetermined gap is set so that the air hose 24 is not completely crushed.

Therefore, according to the configuration of the above embodiment, the upper mold 20 can be lowered and raised by injecting and discharging compressed air into the air hose 24, so that it is possible to lower and raise the upper mold 20, unlike the conventional method. , a flywheel, a crank mechanism, etc. are not required, and the structure can be made smaller and lighter, which is economically advantageous. Furthermore, there are fewer sliding parts and rotating parts, allowing smooth operation with less loss. Furthermore, even if the thickness or bending angle of the long-scale material that is the workpiece is changed, it can be easily handled by simply controlling the amount of compressed air supplied to the air hose 24, making handling easier. It is. In addition, by injecting compressed air into one air hose 24, a uniform pressing force is applied to the entire upper mold 20, so there is no partial bending or excessive bending, and uneven bending is avoided. It is possible to perform accurate bending.

Furthermore, since the air hose 24 is made of a flexible material with a rubber lining inside the jacket part woven from thin threads made of synthetic resin, it has sufficient strength to withstand frequent cycles of inflation and non-inflation. can withstand. Furthermore, since both sides of the slide member 22 cover the air hose 24 from the outside when the air hose 24 is inflated and when it is not inflated, the air hose 24 is covered when compressed air is injected or discharged.
The air hose 24 can be prevented from moving inadvertently, and the air hose 24 can be protected from foreign objects such as cutting debris, oil, and the like. Furthermore, it also serves as a safety measure for workers.

Here, the force F for moving the upper die 20 downward in the figure is defined by the width of the air hose 24 in contact with the frames 23, 23 being W, the pressure of the compressed air injected into the air hose 24 being P, Letting the length of the air hose 24 be L, it is given by F=W・P・L. Further, the relationship between the force F and the movement stroke S of the upper die 20 is as shown in FIG.
It has a characteristic that the smaller the moving stroke S, the larger the force F becomes.

Here, FIG. 4 shows the compression required to weave and bend the metal plate at the same angle when the width of the metal plate material is changed using the thickness t of the metal plate and the movement stroke S of the upper die 20 as parameters. This figure shows the results of an experiment investigating the air injection pressure. Characteristic A: t=1.2mm, S=36mm Characteristic B: t=1.2mm, S=21mm Characteristic C: t=1.0mm, S=36mm Characteristic D: t=1.0mm, S=21mm .

Further, in the above embodiments, bending of a metal plate has been described, but it goes without saying that the present invention can be widely applied to punching of a metal plate. Further, in the above embodiment, a case has been described in which compressed air is used as the pressure fluid, but oil, water, etc., for example, may also be used as the pressure fluid.

It should be noted that the present invention is not limited to the above embodiments, and can be implemented with various modifications without departing from the gist thereof.

[Effects of the Invention] Therefore, as described in detail above, the present invention has a simple structure, is suitable for small size and light weight, is economically advantageous, is easy to handle, and is very good for practical use. It is possible to provide a press processing apparatus for long-scale materials.

[Brief explanation of drawings]

Figures 1a and 1b are a side view and a front view, respectively, showing an embodiment of a press working apparatus for long-scale materials according to the present invention, and Figures 2a, b, and c respectively show the configuration of the main parts of the same embodiment. 3 is a characteristic diagram showing the relationship between the moving force F and the moving stroke S of the upper die of the same example, and FIG. 4 is a graph showing the relationship between the thickness t of the metal plate and the upper die. FIG. 3 is a characteristic diagram showing experimental results of investigating the injection pressure of compressed air required to bend the metal plate at the same angle when the width of the metal plate material is changed using the movement stroke S as a parameter. 11, 12...Support column body, 13...Fixing member,
14... Table, 15, 16... Lifting mechanism, 1
7... Lower die, 18... Fixture, 19... Press mechanism, 20... Upper die, 21... Frame, 22... Slide member, 23... Frame, 24... Air hose,
25... Connector, 26, 27... Shaft, 28, 29
... Spacer, 30, 31 ... Plate, 32, 33
... Spring, 34 ... Plate, 35, 36 ...
Washer, 37, 38...Nut, 39...Connection member, 40, 41...Support, 42...Slide mechanism, 43...Slide member, 44...Guiding member, 45...Screw, 46...Putt , 47...screw.

Claims (1)

[Claims] 1. A horizontally supported long scale table,
A first processing member with a long scale is installed on the top surface of the table along its longitudinal direction, and the first processing member is set above the first processing member along its longitudinal direction and supported so as to be movable in the vertical direction. a long-scale connecting member, and a second long-scale connecting member installed along the longitudinal direction of the lower surface of the connecting member and working together with the first processing member to process the long-scale material. a processing member; a fixing member fixed in position above the connecting member along its longitudinal direction; a biasing mechanism for separating the processing member from the first processing member; and a long-scale first table-shaped member having a surface of a constant height installed on the lower surface of the fixed member along the longitudinal direction thereof. a second pedestal member with a long scale, which is installed along the longitudinal direction on the upper surface of the connecting member and has a surface at a constant height that faces the surface of the first pedestal member; It is interposed between the respective surfaces of the first and second table-shaped members along their longitudinal direction, and expands when pressure fluid is injected into the inside, and causes the second processing member to act as the biasing mechanism. It is pressed down against an urging force to be subjected to processing with the first processing member, and is made of a flexible material in which a rubber lining is applied to the inside of a jacket portion woven with synthetic resin fine threads. One hose-like member is formed, and the hose-like member installed on the side surfaces of the first and second platform members and interposed between the first and second platform members is expanded. a protective member for covering from the outside when inflated and when not inflated; and injecting the pressure fluid into the hose-like member;
A press working apparatus for long scale materials, comprising a control mechanism for discharging the pressure fluid from within the hose-like member.