JPH079035A - Bending device for blade plate - Google Patents

Abstract

PURPOSE:To enable setting a scissors type push claw in a manual type small sized blade plate bending device. CONSTITUTION:A receiving die 2 is adjustably provided in the front and the rear positions on a base 1. A sliding plate 3 with its upper surface opened, is accessibly and leavably arranged on the receiving die 2, and a toggle mechanism 6 driving the sliding plate 3, is provided under the sliding plate 3. By arranging the toggle mechanism 6 under the sliding plate 3, the upper surface of the sliding plate 3, is opened, and a scissors-like push claw 4 made by projecting a leg piece 43 to a claw piece 41, can be used. In this case, the tip of the leg piece 43 which is longer than the claw piece 41, is applied to a cam plate on the base 1, and a large force can be outputted by a small force with the theory of a lever.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade plate bending apparatus for bending a blade plate into various curvatures to make a punching blade for making a paper tile of a jigsaw puzzle, a Thomson blade used for making a paper box, and the like. Regarding

[0002]

2. Description of the Related Art Conventionally, as a blade plate bending apparatus of this kind, as shown in FIG. 7, a sliding plate (3) is provided so as to be able to approach and separate from a receiving mold (2) provided on a base (1), A blade plate (9) provided with a push claw (4) on the sliding plate (3) and inserted between the receiving die (2) and the push claw (4).
On the other hand, the slide plate (3) is moved forward by the toggle mechanism (6), and the blade plate (9) is received by the push claw (4) as shown in FIG.
The one that is sandwiched between (2) and bent is implemented.

Toggle mechanism of the blade bending device (6)
As shown in FIG. 8, a support base (13) is provided behind the sliding plate (3) so as to be movable back and forth, and brackets (14) and (14) are attached upward at both front ends of the support base (13). Protruding, bracket (14) (14)
A toggle mechanism (6) is provided between them.

The toggle mechanism (6) has a slide base at each base end.
The free ends of two links (61) and (62) pivotally supported by (3) and the support base (13) are pivotally supported to form a toggle joint (60), and a link (64) is connected to the pivotal support portion of the joint. ) Is pivotally connected to form a continuous rod.
The base end of (64) is pivotally connected to the eccentric position of the rotary shaft (65).

The pivot shaft (65) is rotatably supported between the brackets (14) and (14), and a cutout portion (66) is provided in a part of the outer periphery of the pivot shaft (65) so that the base end of the connecting rod (64). Fit in the notch (66), and
It is pivotally connected by 7). The rotating shaft (65) is provided with a manual handle (68), and by tilting the handle (68),
Extend the toggle joint (60) in a straight line and slide the sliding plate (3)
To move forward.

A support base positioning device (8) is connected to the support base (13), and the support base positioning device (8) screws a screw shaft (81) in the moving direction of the support base (13). The screw shaft (8) is constructed by connecting a handwheel (85) to the screw shaft (8) via bevel gears (82) (84). Depending on the bending curvature and bending angle of the blade plate (9),
In order to perform positioning control of the forward end of the push claw (4), the handle (85) of the support base positioning device (8) is rotated, and the support base (13) is moved back and forth by the screw thrust to move the toggle mechanism (6). The sliding plate (3) is moved in the same direction as that of the support base (13).

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
As described above and shown in FIG. 6, the blade plate (9) is provided with a block-shaped pushing claw.
There is no problem when pressing against the receiving mold (2) by (4),
As shown in FIG. 9, the pair of claw pieces (41) (41) is used to receive the mold (2).
When pressing the blade plate (9) so as to sandwich it, as shown in FIG. 5A, scissor-like push claws in which the leg pieces (43) are projected on each claw piece (41).
Using (4) interferes with the toggle mechanism (6) and the support brackets (14) (14) of the toggle mechanism, and the base (1)
It is impossible unless the sliding plate (3) is formed long in the front and rear.

Therefore, conventionally, as shown in FIG. 9, a receiving mold (2)
A cam groove (12) (12) is formed on the upper surface (11) of the base supporting the, and a downward shaft (40) is formed on a pair of claw pieces (41) (41) that are openably and closably arranged on the sliding plate (3). (40) is projected, and the shaft (40) is provided with the cam plate groove (12).
It is slidably fitted into (12) and the sliding plate (3) advances,
The claw pieces (41) (41) are closed along the cam plate groove (12).

In the case of the conventional example shown in FIG. 9, the force is applied to the tip side of the claw piece (41) to open and close the claw piece (41), which is disadvantageous in outputting a large force. , The shaft (40) is
The shaft (40) and the cam groove (12) are prematurely worn due to rubbing against 2). Further, since the shaft (40) is cantilevered by the claw piece (41), the force applied to the shaft (40) causes the claw piece (41) to move toward the claw piece (41).
There is a problem that the supporting shaft (48) is subjected to a tilting force and the supporting shaft (48) and the claw piece (41) are rattled at an early stage.

The applicant has applied the toggle mechanism (6) to the sliding plate (3).
It was considered to deploy it at a position lower than the upper surface of the, but the toggle mechanism support base (13) was provided so that it could move back and forth.
In order to connect the toggle mechanism (6) to (13), in order to secure the rigidity of the base (1), it is necessary to increase the height of the base (1), which increases the size of the entire apparatus and reduces the cost. There are problems that are difficult to handle, as well as high costs. INDUSTRIAL APPLICABILITY The present invention clarifies a small and easy-to-handle blade plate bending device by omitting the toggle mechanism support base, connecting the base and the sliding plate only by the toggle mechanism, and disposing the receiving mold so that the front and rear positions can be adjusted. It is something to do.

[0011]

According to the present invention, a sliding plate (3) is provided on a receiving die (2) provided on a base (1) so that the sliding plate (3) can be moved toward and away from the receiving mold (2) and is pushed onto the sliding plate (3). The pawl (4) is provided, and the sliding plate (3) is moved forward by the toggle mechanism (6) with respect to the blade plate (9) inserted between the receiving die (2) and the pressing pawl (4), In a device that presses the blade plate (9) against the receiving mold (2) at (4) and bends it, the positioning block is slidable and positionable on the base (1) in the sliding direction of the sliding plate (3). (5) is provided and the positioning block is provided.
A toggle mechanism (6) having a receiving die (2) provided on (5) and linked to the sliding plate (3) is arranged below the sliding plate (3), and constitutes a toggle joint (60). Of the two links (61) and (62), the position of the pivot (63) of the link (62) pivotally connected to the base (1) is fixed, and the upper surface of the sliding plate (3) is scissor-shaped. It is open so that the push claw (4) can be attached.

[0012]

[Operation and effect] Of the two links (61) and (62) forming the toggle joint (60) of the toggle mechanism (6), one of the links (62) is rotatably supported directly on the base (1). As a result, the structure for connecting the sliding plate (3) and the base (1) is simplified, and the required rigidity can be secured without increasing the height of the base (1). The toggle mechanism (6) can be housed within the bracket) without difficulty.

Axis (63) of link (62) of toggle mechanism (6)
When the position of is fixed to the base (1), the toggle joint (6
(0) is fully extended, the forward end of the sliding plate (3), that is, the sliding plate
(3) It becomes impossible to adjust the forward end of the upper push claw (4) back and forth. Therefore, the receiving mold (2) that is the opponent of the push claw (4)
Even if the bending conditions such as the shape of the receiving die (2), the bending curvature of the blade plate, the type of the push claw (4), etc. are changed, the toggle joint of the toggle mechanism (6) is always configured.
The position of the die (2) can be adjusted and used so that the (60) is fully extended and maximum output is possible. The positioning block (5) supporting the receiving mold (2) may be arranged on the base (1) so that it can be moved back and forth and can be positioned. Therefore, in order to arrange the positioning block (5), the base (1) It is not necessary to increase the height of the.

As described above, the toggle mechanism (6) is attached to the sliding plate.
Since it is placed below (3), the upper surface of the sliding plate (3) is opened, and the leg pieces (43) are pushed out by the scissors-like push-outs as shown in FIGS. 1 and 2. Claws (4) can be used, in this case claw pieces
Attach the tip of the leg piece (43) longer than (41) to the cam plate (4
Applying 5), a large force can be output with a small force according to the principle of folding.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a sliding plate (3) is located on the right side and a positioning block (5) is located on the left side of the center of a horizontally elongated hollow base (1) having an open upper surface. It is slidable in the longitudinal direction of (1). Sliding plate (3) and positioning block
The height of the upper surface of (5) corresponds to the height of the upper end of the base (1).
A square receiving hole (51) is opened in the center of the upper surface of the sliding block (3) side end of the positioning block (5), and the receiving die (2) is attached to the receiving hole (51). Also, the positioning block (5) has a sliding plate
An auxiliary plate (50) is fixed to the opposite side of (3), and the auxiliary plate (50)
Is for attaching a reinforcing jig (not shown) for preventing the receiving mold (2) from falling.

The receiving mold (2) has a rectangular base portion (21) in the lower part, and the base portion (21) is detachably fitted in the receiving hole (51).
A tightening screw (52) for reducing the receiving hole (51) is screwed into the positioning block (5), and the tightening screw (52) is a base.
A long hole (13) opened in the side wall of (1) is slidably penetrated, and a handle (53) is projected at the tip. Handle (53)
Tighten the screws (52) with the positioning block
The positioning block (5) can be removed from the receiving hole (51) by loosening the screw (52) when (5) is clamped.

The positioning block (5) includes a positioning device.
(7) are connected, and the positioning device (7) screw-engages the screw shaft (71) in the moving direction of the positioning block (5), and the screw shaft (71)
Is supported by a connecting block (14) connecting both side walls (10), (10) of the base (1) so as to be rotatable and immovable in the axial direction. Screw shaft (71)
A rotary shaft (73) is connected to the base end of the rotary shaft via bevel gears (72) and (74), and a manual handle (75) is attached to the rotary shaft.

The handle (75) can be turned to move the positioning block (5) and hence the receiving mold (2) back and forth by screw thrust. A clamp screw (54) with a handle (55) is screwed through the side wall (10) of the base (1),
The positioning block (5) can be clamped by turning (55).

A toggle mechanism (6) is provided below the sliding plate (3). The toggle mechanism (6) pivots the free ends of the links (61) and (62) whose base ends are pivotally supported by the base (1) and the slide base (3), respectively, to attach the toggle joint (60). The distal end of the connecting rod (64) is pivotally connected to the pivotal support portion of the joint, and the downward base end of the connecting rod (64) is pivotally connected to the eccentric position of the rotating shaft (65).

The rotating shaft (65) is rotatably supported between the side walls (10) and (10) of the base (1), and a cutout (66) is provided in a part of the outer periphery thereof to connect the connecting rod ( Fit the base end of 64) into the cutout (66) and
It is pivotally connected by 7). The rotating shaft (65) is provided with a manual handle (68), and by tilting the handle (68),
Extend the toggle joint (60) in a straight line and slide the sliding plate (3)
To move forward.

A supporting shaft (31) is provided at the center of the upper surface of the sliding plate (3) on the side of the positioning block (5), and a scissor-like push claw (4) is provided on the supporting shaft (31) so that it can be opened and closed. To do. The push claw (4) projects the rearward by intersecting the leg pieces (43) (43) with each of the pair of claw pieces (41) (41) and projecting the base end portion of the claw pieces (41) (41). The supporting shaft (31) is rotatably supported. A compression spring (470) is interposed between the leg pieces (43) (43) and urges the claw pieces (41) (41) in the opening direction.

Cam plates (45) are provided on both side walls (10) (10) of the base (1).
(45) are arranged so that they can approach and separate from each other, and the roller (44) provided at the tip of the leg piece (43) contacts the cam plate (45). Cam plate
Outside the (45) is a support block (47) fixed to the base (1).
(47) is provided, the screw shaft (46) is rotatably supported by passing through the support block (47), and the screw shaft (46) is screwed to the cam (45). By turning the screw shaft (46), the cam (45)
(45) can be moved closer and further away.

However, of the two links (61) and (62) forming the toggle joint (60) of the toggle mechanism (6), one link (62) is rotatably supported directly on the base (1). Therefore, the connection structure of the sliding plate (3) and the base (1) is simplified,
The required rigidity of the base (1) is secured without increasing the height of the base (1), and the toggle mechanism (6) can be accommodated in the base (1) without difficulty.

Axis (63) of link (62) of toggle mechanism (6)
When the position of is fixed to the base (1), the toggle joint (6
(0) is fully extended, the forward end of the sliding plate (3), that is, the sliding plate
(3) The forward end of the upper push claw (4) cannot be adjusted back and forth. Therefore, the receiving die (2), which is the partner of the pushing claw (4), is configured to be able to be positioned in the front-back direction, and the shape of the receiving die (2), the bending curvature of the blade plate, the type of the pushing claw (4), etc. Even if the bending conditions change, the toggle joint of the toggle mechanism (6) is always
The position of the die (2) can be adjusted and used so that the (60) is fully extended and maximum output is possible.

Positioning block (5) for supporting the receiving mold (2)
Need only be placed on the base (1) so that it can be moved back and forth and can be positioned, so there is no need to make the height of the base (1) particularly long in order to install the positioning block (5).

As described above, the toggle mechanism (6) is attached to the sliding plate.
(3) Since the upper surface of the sliding plate (3) is opened by arranging it downward, the scissor-shaped push claw in which the leg piece (43) is projected to the claw piece (41) as shown in FIGS. 1 and 2. (4) can be used. In this case, the tip of the leg piece (43) longer than the claw piece (41) is brought into contact with the cam plate (45) on the base (1), and the principle of folding is used. , Can output a large force with a small force. The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the claims.

[Brief description of drawings]

FIG. 1 is a perspective view of a blade bending device.

FIG. 2 is a plan view of the above.

FIG. 3 is a sectional view of the above.

FIG. 4 is a cross-sectional view of a state in which a push claw is advanced.

FIG. 5 is an explanatory diagram of bending the blade plate with scissor-shaped push claws.

FIG. 6 is a plan view of a bent state of a blade plate.

FIG. 7 is a perspective view of a conventional example.

FIG. 8 is a sectional view of the above.

FIG. 9 is a plan view showing a state in which a retractable push pawl according to a conventional example is attached.

[Explanation of symbols]

 (1) Base (2) Receiving mold (3) Sliding plate (4) Push claw (5) Positioning block (6) Toggle mechanism (7) Positioning device

Claims (1)

[Claims] 1. A sliding plate (3) is provided on a base (1) so as to be able to approach and separate from a receiving mold (2), and a push claw is provided on the sliding plate (3).
(4) is provided, and the slide plate (3) is advanced by the toggle mechanism (6) with respect to the blade plate (9) inserted between the receiving die (2) and the pressing claw (4), In a device for pressing the blade plate (9) against the receiving mold (2) and bending the blade plate (4) with the base plate (1), a positioning block (slideable and slidable in the sliding direction of the slide plate (3) on the base (1)) 5) is provided and the receiving mold (2) is placed on the positioning block (5).
The toggle mechanism (6) provided with the slide plate (3) is provided below the slide plate (3), and is included in the two links (61) (62) that form the toggle joint (60). , The position of the pivot (63) of the link (62) pivotally connected on the base (1) is fixed, and the upper surface of the sliding plate (3) is opened so that scissors-like push claws (4) can be attached. Blade plate bending device.