JP2807991B2 - Plate joining equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate joining apparatus for cutting and bending a plurality of plate materials in a laminated state to form a cut piece, and then folding the cut piece to join the plate materials.

[0002]

2. Description of the Related Art Conventionally, burring caulking has been generally widely used as a means for joining plate materials such as relatively thin steel plates in a laminated state. As shown in FIG. 8, the burring caulking process includes a punch 50 having a tapered tip and a punch guide 5 for guiding the punch 50.
1, a die 52 having a hole 52a into which the tip of the punch 50 can enter, and an anvil 53 having a substantially conical projection 53a formed on the upper surface.
First, as shown in FIG. 8A, the punch guide 51 is brought into contact with and supported by the plate material S placed on the die 52, and then the punch 50 is lowered to a position where the punch 50 enters the hole 52 a of the die 52. Burring is performed on the plate material S. By this burring process, a burring hole S1 and a burring portion S2 remaining in a cylindrical shape around the burring hole S1 are formed in the plate material. Subsequently, as shown in FIG. 8B, the anvil 53 is arranged on the moving path of the punch 50, and the projection 53a is formed.
After the burring hole S1 of the plate material S is fitted to the plate material S, the plate material S is pressed against the anvil 53 by the punch guide 51 and caulking is performed. The burring portion S
2 is crimped so as to be folded back along the protrusion 53a of the anvil 53.

[0003]

However, in the above burring and crimping, if the burring portion is formed large by sharpening the tip of the punch into a conical shape,
At the time of caulking, the deformation rate on the tip side of the burring portion increases, causing cracks, reducing the bonding force of the plate material and shortening the life of the punch. . Also, if the tip of the punch is flattened to form the burring part appropriately, the tip of the burring part is cut off during burring, so that a discharge processing mechanism for this cut off part is required separately. There are also problems such as the complexity of the system.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a plurality of plate materials in a laminated state are cut and bent integrally to form a cut piece in the plate material. A plate joining apparatus for joining a plate by folding a piece, comprising: a punch having a tip end configured to be able to reciprocate in response to an operation of a reciprocating drive source and to have at least two inclined surfaces intersecting at a tip. A die having a hole into which the tip of the punch can enter, an anvil having a protrusion capable of guiding a folded piece formed on a plate material, and a die and an anvil capable of alternately positioning these dies and anvil on a moving path of the punch. It is characterized by comprising a tool changing unit and a punch guide capable of guiding the punch so as to protrude and pressing a plate material against the die or anvil. In addition,
The tip of the punch is composed of, for example, two surfaces inclined so as to intersect at the tip and two parallel surfaces.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4, reference numeral 1 denotes a plate joining device, which is a reciprocating drive source 14 disposed on the machine base 2.
have. The reciprocating drive source 14 includes a motor 3 attached to the machine base 2, a crank member 4 rotatable by driving the motor 3, an arm 5 rotatably attached to the crank member 4, 5, two links 6a and 6b rotatably attached to the end of the link 5. One end of the link 6a is rotatably connected to the machine base 2, and the other end of the link 6b is , Slider 8.

The slider 8 is guided by a punch guide 7 slidable in the vertical direction while being guided at the front of the machine base. A flange 8a is integrally formed on the upper part of the slider 8 so as to press the punch guide 7. Is formed. The slider 8 and the punch guide 7 are connected by fitting a pin 11 penetrating the slider 8 into a long hole 7a provided in the punch guide 7, and the slider 8 is punched by the length of the long hole 7a. It is movable with respect to the guide 7. An L-shaped operating lever 10 is rotatably disposed on the slider 8 while being supported by the pin. The tip of the operating lever 10 projects to the front of the machine base and is disposed there. Between the pair of cam members 15. The cam member 15 is mounted on the machine base 2.
The front surface is urged in a constantly closing direction, and a cam groove 16 into which the tip of the operation lever 10 is always fitted is symmetrically formed on the opposing surface. This cam groove 1
Reference numeral 6 denotes a first vertical groove 16a, a first inclined groove 16b, a second vertical groove 16c, and a second inclined groove 16d, which are communicated with each other.
It is configured so as to prevent the backward movement of zero.

[0007] A punch 12 urged by a spring 13 is guided to the punch guide 7 so as to be able to protrude from the tip thereof, and this punch 12 is, as shown in FIGS. 4 (a) and 4 (b). A front end portion 12a composed of two opposing parallel surfaces f1 and f1 and two inclined surfaces f2 and f2 orthogonal to the two surfaces and intersecting at the front ends. The punch 12
A punch 12 is provided on the bottom surface of the
A fitting hole 10a capable of fitting is formed at the upper end.

On the other hand, a punch 12 is
A downwardly protruding arm 17 is integrally attached to the arm 17, and a tool changing unit 18 capable of selectively arranging a die 27 and an anvil 28 on the moving path of the punch 12 is arranged on the arm 17. This tool change unit 18
Has a first slide member 19 slidably disposed along the upper surface of the arm portion 17, and a rack gear 20 is integrally fixed to the first slide member 19. A cylinder 21 is attached to the base end of the arm 17, and a second slide member 22 slidable on the first slide member 19 is connected to a rod 21 a of the cylinder 21. . A spring 23 is housed inside the second slide member 22, and
A stopper 24 is attached at the rear end,
The first slide member 19 is always urged backward by a spring 23, and is stopped by a stopper 24 at a predetermined position. Further, a stopper (not shown) is attached to the arm portion 17 on the retreating movement path of the first slide member 19 so as to stop the retreating first slide member 19 at a predetermined position. ing.

A tool support 26 is rotatably disposed on the second slide member 22.
A die 27 and an anvil 28 are symmetrically mounted on the upper part of the die 6. The die 27 has a guide hole 27a having a rectangular cross section into which the tip 12a of the punch 12 can enter.
Is formed in a penetrating manner. The anvil 28 has a configuration in which a trapezoidal projection 28a is formed. Further, a pinion gear 30 that constantly meshes with the rack gear 20 via a one-way clutch 29 is attached to a lower portion of the tool support 26. The one-way clutch 29 is configured to integrally rotate the tool support 26 only when the pinion gear 30 is rotationally moved to the cylinder 21 side.

In the above-mentioned plate joining apparatus 1, a die 27 is arranged on a moving path of the punch 12, and a plate S such as a steel plate in a stacked state is placed on the die, and then a start switch (not shown) is pressed. , The motor 3 rotates forward to rotate the crank member 4, and the crank arm 5, the link 6a,
6b are respectively rotated accordingly. By the rotation of the links 6a and 6b, the slider 8 and the punch guide 7 descend integrally, and first, the punch guide 7 comes into contact with the plate S as shown in FIGS. 5 (a) and 7 (a). At this time, since the operating lever 10 is guided by the first linear groove 16a of the cam groove 16 and descends integrally with the slider 8, the fitting hole 10a is aligned with the upper end of the punch 12, and the punch 12 is actuated by the reciprocating drive source. To communicate. For this reason, as shown in FIG. 5B and FIG. 7B, the punch 12 descends to a position where its tip enters the guide hole 27a of the die 27, and the tip 12a
The sheet material S is cut and bent. As a result, a rectangular cut hole H and a cut piece P cut and raised on the opposite side of the hole H are formed in the plate material S as shown in FIGS. Is done.

Subsequently, the slider 8 is turned upward by the crank action and the link action, and in response to this, the operating lever 1 is received.
0 is separated from the punch 12, and as shown in FIG.
It rotates along the first inclined groove 16b and reaches the second vertical groove 16c. On the other hand, after the plate material S is once detached from the die 27, the cylinder 21 is operated and the first slide member 19 and the second slide member 22 are retracted integrally. At this time, since the rack gear 20 and the pinion gear 30 move integrally, the tool support 26 moves without rotating. Thereafter, when the first slide member 19 comes into contact with a stopper (not shown) and stops, only the second slide member 22 retreats, so that the pinion gear 30 rotates along the rack gear 20 and is acted on by the one-way clutch 29. The tool support 26 is rotated integrally. By this time, by the time the second slide member 22 stops, the tool support 26 rotates half a turn to exchange the positions of the die 27 and the anvil 28.

Thereafter, the cylinder 21 moves back and the rod 2
When 1a is extended, first, the second slide member 22 advances with respect to the first slide member 19 to rotate the pinion gear 30 along the rack gear 20, but at this time, only the pinion gear 30 is rotated by the one-way clutch 29. Then, the second slide member 22 comes into contact with the first slide member 19 and moves the same integrally, thereby disposing the anvil 28 on the moving path of the punch 12.

As described above, after the die 27 and the anvil 28 are exchanged by the tool exchanging unit 18, the motor 3 is driven again and the slider 8 is lowered again. Abut. At this time, since the operation lever 10 is guided in the second vertical groove 16c while being rotated, the punch 12 cannot be pushed,
Retreats into the punch guide 7. Therefore, FIG.
As shown in (b) and FIG. 7 (c), the plate S is pressed by the punch guide 7 and pressed against the anvil 28, and the cut piece P is folded back along the protrusion 28a and joined.

Thereafter, the slider 8 together with the punch guide 7, the punch 12, etc., rises and returns to the top dead center.
At this time, the operation lever 10 is moved from the second vertical groove 16c to the second
The inclined groove 16d is guided to return to the first vertical groove 16a. On the other hand, in the tool changing unit 18, the die 27 and the anvil 28 are exchanged by the above-described operation, and the die 27 is positioned again on the moving path of the punch 12. Then, it prepares for the joining work of the next plate material. In addition, in the above joining work of the plate material,
Since the die 27 and the anvil 28 are alternately positioned on the moving path of the punch 12 by the tool changing unit 18, the tip 12 a of the punch 12 and the guide hole 27 of the die 27 are formed.
The alignment of a and the alignment of the tip 12a of the punch 12 and the projection 28a of the anvil 28 may be performed only when the die 27 and the anvil 28 are attached to the tool changing unit 18.

[0015]

As described above, in the plate joining apparatus according to the present invention, the plate can be cut and bent to form a cut piece, and the cut piece can be folded back to join the plate.
There is an advantage that the plate material can be firmly joined by securing a large cut and bent piece. In addition, since blank chips are not generated when the cut bent piece is formed, there is an advantage that there is no need to provide a separate blank chip discharging mechanism. Furthermore, since a tool exchange unit is provided, the die and anvil can be exchanged automatically, and the plate joining process can be fully automated.

[Brief description of the drawings]

FIG. 1 is an enlarged partial cutaway sectional view of a main part of a plate joining apparatus.

FIG. 2 is a partially cutaway front view of the plate joining apparatus.

FIG. 3 is an enlarged partial cutaway sectional view of a main part of the plate joining apparatus.

FIG. 4 is an enlarged perspective view of a main part of the plate joining apparatus.

FIG. 5 is an explanatory view of the operation of the plate joining apparatus.

FIG. 6 is an explanatory view of the operation of the plate joining apparatus.

FIG. 7 is an explanatory diagram of the operation of the plate joining apparatus.

FIG. 8 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate joining apparatus 7 Punch guide 10 Operation lever 12 Punch 12a Tip part 14 Reciprocating drive source 15 Cam member 18 Tool exchange unit 27 Die 27a Guide hole 28 Anvil 28a Projection S Plate material H Cut hole P Cut bent piece

Claims (2)

(57) [Claims] A plate joining apparatus for cutting a plurality of plate materials in a laminated state together to form a cut piece, and then turning the cut piece to join the plate materials, wherein a reciprocating drive source is operated. A punch having a front end portion that is reciprocally movable upon receipt and configured so that at least two inclined surfaces intersect at a front end, a die having a hole into which the front end of the punch can enter, and a cut piece formed in a plate material An anvil having a protruding portion capable of guiding the die back, a tool changing unit capable of alternately positioning the die and the anvil on the moving path of the punch, a guide for guiding the punch so as to protrude, and pressing a plate material against the die or anvil. An apparatus for joining plate materials, comprising a punch guide capable of being used. 2. The plate joining apparatus according to claim 1, wherein the tip of the punch comprises two surfaces inclined so as to intersect at the tip and two parallel surfaces.