JPH01289516A - Form punching apparatus - Google Patents

Abstract

PURPOSE:To simultaneously perform the forming work and punching work by entering and leaving a pressurized fluid into a cylinder corresponding to an elevating movement of a sub-punch-holder and making a forming punch and piercing punch possible to relatively move. CONSTITUTION:When a shank plate 9 is lowered by operating a press ram, the punch holder 5 is descended along a guide post 4, a dishing punch 19 pushes a sheet material 29 loaded on the die 3 to perform a prescribed forming work to stick the dishing punch 19 to the die 3. A striker 28 is abutted on a limit switch 26b to make the ON state making a solenoid valve open, the cylinder 41 is made in the communicating state. Further, because the load is still operating on the shunk plate 9, lowering the piercing punch 20 through a space rod 7 and the punch holder 5 to perform the prescribed piercing work.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a forming punching device that can simultaneously perform forming and punching on plate materials and other workpiece materials. This invention relates to an improvement of a forming punching device in which a punch and a hole punch for processing are formed so as to be movable relative to each other.

[Conventional technology]

Conventionally, when machining plate-shaped recesses and holes in plate materials or other workpiece materials, it is necessary to use a plate push punch and a hole punch, so forming equipment and drilling equipment are used. The most practical method is to process it in two steps. However, since the above processing is so-called sheet metal processing using a press, it is efficient to carry out simultaneous processing using the same press in one step.

FIG. 7 is a longitudinal sectional view of a main part showing an example of a conventional forming punching device. In FIG. 7, 51 is a frame;
It is formed into a roughly U-shape using steel material.

Forming punches and dies are provided at the open end so as to face each other.

That is, 52 is a die 1 made of tool steel, for example, and formed into a cylindrical shape having a through hole 53 in the center.
It is fixed under the open end of.

Next, reference numeral 54 denotes a stripper, which is formed into a hollow cylindrical shape, has an adjuster 55 fixed to its upper end, and has a countersunk punch 56 and a hole bunch 57 slidably accommodated therein. The countersunk punch 56 and the hole punch 57 are each made of tool steel, for example, and the lower end of the countersunk punch 56 has a truncated conical shape corresponding to the recess to be formed, and the hole bunch 57 has a shape corresponding to the hole size to be formed. It is formed to correspond and to be able to engage with the through hole 53 of the die 52. Spacers 58 and 59, which are coaxial with each other and whose opposing surfaces are formed into convex conical shapes, are placed above the countersunk punch 56 to hold the steel balls 6.
It is slidably interposed with the hole punch 57 via the hole punch 57. Next 6
1 is the punch head.

The port 62 is in close contact with the upper end of the spacer 58.
It is fixed to the upper end of the hole punch 57 via.

63 and 64 are compression coil springs, respectively, and the frame 51
and the adjuster 55 and the punch head 61,
It is interposed between the collar 65 fixed on the adjuster 55. Reference numerals 66 and 67 designate cushioning materials, which are formed into an annular shape using urethane or other elastic material, and are interposed between the punch head 61 and the collar 65 and between the steel ball 60 and the adjuster 55, respectively.

With the above configuration, when the frame 51 is attached to a press table (not shown) and the punch head 61 is lowered with the plate material 68 placed on the die 52, the stripper 54 first presses the plate material 68 and The concave portion can then be formed using a countersunk punch 56, and a hole can then be formed in the center using a hole punch 57. That is, the pressing force of the plate material 68 is ensured by the compression coil spring 63, and from this state, the punch head 6 is applied to the countersunk punch 56.
The impact force of 1 is 59. The signal is transmitted via the steel ball 60 and the spacer 58. When the rod 61 is further lowered toward the punch, the steel ball 60 is pushed out in a direction perpendicular to the axis by the spacers 58 and 59, so that the hole punch 57 can be further lowered to make a predetermined hole. punch head 61
When the load is released, the restoring force of the compression coil springs 63, 64 and the buffer material 67 returns to the initial state.

[Problem to be solved by the invention]

In the above-mentioned conventional forming punching device, the relative movement in the axial direction between the one-plate push punch 56 and the hole punch 57 is controlled by the steel ball 60.
Since this is performed by moving in a direction perpendicular to the axes of the countersunk punch 56 and the hole punch 57, there is a problem that the service life is short.

In other words, since the spacers 58, 59 and the steel ball 60 are in point contact, the contact area is easily damaged and slippage becomes poor. Furthermore, although it can be used for light loads, it cannot be used for single-heavy loads and/or when the relative movement dimension between the countersunk punch 56 and the hole punch 57 is large, which limits the scope of application. There is a point.

SUMMARY OF THE INVENTION An object of the present invention is to provide a forming punching device that solves the problems existing in the above-mentioned prior art, is fully applicable to single-heavy loads, and has a long life.

[Means to solve the problem]

In order to achieve the above object, the present invention has the following features.

A molding comprising a molding punch and a hole punch formed to be relatively movable in the axial direction, and a die having a corresponding molding part and a hole facing the molding punch and hole punch so as to be able to engage and disengage. In a punching device, a punch holder is slidably mounted on multiple guide posts set up on a die holder with a die mounted in the center, and a shank plate is fixed above the punch holder via multiple space rods. , fix the cylinder below the shank plate and into this cylinder.

A plunger with a plunger head provided at the lower end is slidably fitted below the plunger head.

A sub-punch holder is fixed to the sub-punch holder via a plurality of sub-posts that are slidably formed through the punch holder, and a forming punch is fixed to the sub-punch holder,
The forming punch and the hole punch are configured to be movable relative to each other by causing pressure fluid to enter and exit the cylinder in response to the vertical movement of the sub-punch holder. A technical method was adopted.

[Function] With the above configuration, during processing and forming, the pressurizing nozzle j of the plunger using pressure fluid acts on the forming punch, and -
The mechanical striking force of the press ram can be applied individually to the universal punch, and the forming of Fi material and the drilling can be performed at the same time.

〔Example〕

FIG. 1 is a sectional front view of main parts showing an embodiment of the present invention.

2 and 3 are a sectional view taken along the line AA and BB in FIG. 1, respectively, and FIG. 4 is a vertical sectional view showing an example of a pressure fluid source in an embodiment of the present invention. be. In these figures, reference numeral 1 denotes a gou holder, which is formed into a flat plate shape made of steel material, to which a gou 3 made of tool steel or the like is fixed via a gou plate 2 to the center, and a guide post 4 is attached to, for example, two groves of trees. Set up Reference numeral 5 designates a punch holder, which is provided so as to be vertically slidable on the guide post 4 through a guide bush 6. For example, four space rods 7 are erected above the punch holder 5, and these A shank plate 9 having a shank 8 projecting from substantially the center thereof is fixed upwardly. A cylinder 10 is fixed to the lower part of the shank plate 9, and a plunger 12 is provided in the cylinder 10 with a plunger 11 at the lower end.
be slidably fitted. 13 and 14 are O-rings, which are fitted between the plunger 12 and the cylinder 10 in a liquid-tight manner. 15 is a pipe, which is connected to a pressure fluid supply source 40 (see FIG. 4), which will be described later. Next, reference numeral 16 denotes a sub-post, which is attached to the lower part of the plunger head 11 via bolts 17, for example, at four different positions.
6 is formed to vertically penetrate the punch holder 5 and to be slidable.

A sub-punch holder 18 is fixed to the lower end of the sub-post 16. Reference numeral 19 denotes a countersunk punch, which is made of, for example, tool steel and has a hole in the center and a truncated conical surface, and is fixed to the substantially central portion of the sub-punch holder 18. Reference numeral 20 denotes a hole punch, which is formed into a cylindrical shape from a material such as tool steel, and is fixed to the approximate center of the punch holder 5 via a banking plate 21, a slot 22 to the hole punch, and a punch guide 23. A punch holder 18 and a countersunk punch 19 are formed to be inserted therethrough and slidable thereon. Reference numeral 24 denotes an LDI material, which is formed into a hollow cylindrical shape from an elastic material such as urethane, and 25 is a switch bracket interposed between the punch guide 23 and the sub-punch holder 18.

For example, the limit switches 26a, 26 are formed into an abbreviated shape made of a material such as angle iron and installed upright on the upper surface of the gouger holder 1.
Attach b. A holder 27 is fixed to the side edge of the sub-punch holder 18 and a striker 28 is attached thereto. Note that the striker 28 is the limit switch 26.
a, 26b, and limit switches 26a, 26 at the upper and lower limits of the sub-punch holder 18.
b are individually operable.

Next, the configuration of the pressure fluid supply *40 will be described with reference to FIG. Reference numeral 41 denotes a cylinder, which is formed into a hollow cylindrical shape and has disk-shaped flanges 42 protruding from both ends. A piston 43 is fitted into the cylinder 41 so as to be movable in the axial direction. 44 is an O-ring. A flanged lid member 45 is fixed to both ends of the cylinder 41, a compression coil spring 46 is interposed between one lid member 45 and the piston 43, and a piping 15 is inserted between the other lid member 45. of':
It is connected via a control device such as a magnetic valve (not shown) to enable communication of pressure fluid with the cylinder 10 shown in FIG.

The operation of the above configuration will be described first. First, the cylinder to, 41 via a hydraulic pump (not shown)
Pressure oil is supplied into the chamber to create the conditions shown in FIGS. 1 and 4. In this state, the striker 28 shown in FIG. 1 turns on the upper limit switch 26a, so the solenoid valve (not shown) installed in the pipe 15 is kept closed, as shown in FIG. The cylinder 10 and the cylinder 41 shown in FIG. 4 are not in communication with each other. Next, when the press ram (not shown) is operated to lower the shank plate 9, the punch holder 5 descends along the guide post 4 via the guide bush 6, and the plate material 29 placed on the gouer 3 is moved down. The two-plate push punch 19 and the gooey 3 are brought into close contact with each other by pressing the two-plate punch 19 and performing a predetermined forming process. As a result of the above, the sub-punch holder 18 reaches the lower end.

Since the striker 28 comes into contact with the lower limit switch 26b to turn it on and open the solenoid valve, the cylinder 10 and the cylinder 41 shown in FIG. 4 are brought into communication. Note that since a load is still acting on the shank plate 9, the hole punch 20 is lowered via the space rod 7 and the punch holder 5 to punch a predetermined hole.
It is compressed by the sub-punch holder 18 and increases its outer diameter, deforming it and accumulating strain energy. At the same time as the upper hole is machined, the pressure oil 10a in the cylinder 10 is compressed, and the oil is transferred to the cylinder 4 shown in FIG.
1 and moves the piston 43 to the left against the force of the compression coil spring 46.

When the shank plate 9 is pulled upward after the above-mentioned forming process is completed, the pressure inside the cylinder 10 decreases, so the fourth
Pressure oil 10a in the cylinder 41 shown in the figure moves through the pipe 15 into the cylinder 10 shown in FIG. By further raising the shank plate 9, the punch holder 5 and plunger head 11 come into contact with each other, and the sub-punch holder 18 is raised. Note that when the sub-punch holder 18 rises after the above-mentioned forming process and hole forming process are completed, the hole bunch 20 and the plate material 29 may be firmly stuck together and rise as they are.

The hole punch 20 can be returned to its original position by the repulsive restoring force based on the strain energy accumulated in the compressed and deformed buffer material 24 as described above, and the plate material 29 can be dropped. When the sub-punch holder 18 reaches its upper limit, the striker 28 contacts the upper limit switch 26a, closes the solenoid valve installed in the pipe 15, and returns to the original state. By repeating the above operations, three-plate pressing and hole drilling can be performed simultaneously.

FIGS. 5 and 6 are longitudinal sectional views of main parts showing other embodiments of the present invention, and the same parts are designated by the same reference numerals as in FIGS. 1 to 3. In both figures, reference numeral 71 denotes a holding member, which has a through hole 72 in its center, is fixed to the lower surface of the punch holder 5 via a compression coil spring 73, and is formed to be movable relative to the hole punch 20 in the axial direction. Next 74
9 is a molded punch 9 formed into, for example, a flat plate shape or a bar shape, and is fixed to a plunger head (not shown, but see reference numeral 11 in FIG. 1) such that the punch holder 5 can be inserted therethrough and relatively movable. A molding portion 2a is provided on a part of the gooey plate 2 in a protruding manner, and is formed to be able to be freely engaged with and disengaged from the molding punch 74. 75 is a driving member, and the punch holder 5
A sliding slope 75a is provided at the lower end. Next, reference numeral 76 denotes a forming punch, which is provided protruding from the side surface of a driving member 77 provided horizontally movably on the gooey holder 1, and is formed so as to be able to engage and disengage from the molded portion 2a of the gooey plate 2. Note that a sliding slope 77 provided at the upper end of the drive member 77
a is formed at the same angle as the sliding slope 75a of the driving member 75 and is always in close contact with the sliding slope 75a, for example, via a pressing means such as a spring;
In addition, they are made to be able to slide freely relative to each other, and by vertical movement of the driving member 75.

The drive member 77 is configured to be able to move laterally.

The rest of the structure is the same as the embodiment shown in FIGS. 1 to 4 above.

The operation of the above configuration will be described first. When the shank plate (see reference numeral 9 in the first part) is lowered by the operation of the press ram (not shown) in the same manner as in the previous embodiment, the presser member 71 presses the plate material 29 against the die plate 2 by the pressing force of the compression coil spring 73. and press it against the upper surface of the die 3.

Next, by lowering the forming punch 74, the end portion of the plate material 29 is bent until it becomes approximately perpendicular. Even after the forming punch 74 reaches the lower limit, the punch holder 5 further descends, so the forming punch 76 moves leftward by the drive members 75 and 77, in cooperation with the forming part 2a provided on the die plate 2.

The end of the plate material 29 is formed into a U-shaped cross section. This state is shown in FIG. Note that the operation of punching holes with the 5-hole punch 20 using the Ni lower part of the punch holder 5 is the same as in the previous embodiment, and the compression coil spring 73 is not operated while the plate material 29 is being bent and punched. Pressing member 7
1 to press and secure the plate material 29 onto the die plate 2 and the die 3. After the above forming process is completed, when the shank plate is pulled upward, the hole punch 2o and the forming punch 74. Furthermore, the pressing member 71 also rises with a slight delay. Note that as the punch holder 5 rises, the drive member 75 also rises, the drive member 77 moves to the right, the forming punch 76 detaches from the forming part 2a, and returns to the initial state after passing through the state shown in FIG. Return. By repeating the above operations, vi
Drilling and bending of the material 29 can be performed at the same time.

In this embodiment, an example was described in which a countersunk punch, which is a forming punch, was formed into a truncated cone shape, but it may be formed into a shape other than a truncated cone. In other words, it can be widely applied to structures in which there is relative movement in the axial direction between the hole punch and the hole punch. Further, the configuration is not limited to only one pair of punches and dies, and the same effect can be obtained even if there are multiple pairs as required. Furthermore, it goes without saying that the pressure fluid within the cylinder may be another fluid other than oil removal.

In this embodiment, it is convenient to use hexagon socket head bolts as the fixing means between the constituent members, but it is also possible to use welding, adhesion, or other fixing means. Furthermore, it goes without saying that the number of guide posts, space rods, sub-posts, etc. to be installed should be appropriately selected in consideration of the dimensions, material, etc. of the equipment to be processed.

〔Effect of the invention〕

Since the present invention has the structure and operation as described above,
You can expect the following effects.

+11 Since the forming punch is actuated by pressure fluid, and - the universal punch is actuated by mechanical impact force, there are no wear parts like in conventional devices, and the service life can be greatly extended.

(2) Since the forming punch and hole punch have separate operating mechanisms, it is possible to set a large relative movement dimension in the axial direction between the forming punch and the hole punch, and it is also possible to apply a single load, making it possible to apply a wide range of applications. is extremely wide.

(3) The operating force of the forming punch can be adjusted steplessly by simply adjusting the pressure of the pressure fluid.

Extremely easy to operate.

[Brief explanation of the drawing]

FIG. 1 is a sectional front view of a main part showing an embodiment of the present invention. 2 and 3 are a cross-sectional view taken along line AA and line B-B in FIG. 1, respectively, and FIG. 4 is a vertical cross-sectional view of a main part showing an example of a pressure fluid source in an embodiment of the present invention. FIG. 5 and FIG. 6 are longitudinal cross-sectional views of main parts showing other embodiments of the present invention, respectively;
FIG. 7 is a longitudinal sectional view of a main part showing an example of a conventional forming punching device. 1: Die holder, 4 Ni guide post, 5: Punch holder, 7: Space rod, 10 Niji cylinder, tX Ni plunger head, 16: Sub post, tS: Sub punch holder, 2o: Hole punch. 74: Forming punch. Patent Applicant Myagi Co., Ltd. Representative Patent Attorney Mori 1) Hiroshi (3 others) 1-1. Da 44 Gireta 2 Bu 2 no S+3 Sono IJcL 弗 512] Ki 7 Figure

Claims (1)

[Scope of Claims] A forming punch and a hole punch that are formed to be relatively movable in the axial direction, and a die that is provided with a forming portion and a hole that correspond to the forming punch and hole punch can be freely engaged and disengaged. In a forming punching device configured as shown in FIG. A cylinder is fixed below the shank plate, and a plunger having a plunger head at the lower end is slidably fitted into the cylinder, and the punch holder is attached below the plunger head. A sub-punch holder is fixed via a plurality of sub-posts formed to be inserted and slidable, and a forming punch is fixed to the sub-punch holder, and pressure is applied within the cylinder in response to the vertical movement of the sub-punch holder. A forming punching device characterized in that a forming punch and a hole punch are configured to be movable relative to each other by allowing fluid to enter and exit.