JP4551511B2 - Bending machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bending apparatus for bending a long material.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when a long material is bent, a bending apparatus is known in which a material is wound around a bending die in which a groove corresponding to a bending shape is formed.
In this bending apparatus, when bending into different bending shapes, for example, as shown in FIG. 5, a bending die 106 in which a plurality of grooves 102 and 104 corresponding to the bending shape of the material 101 are formed in multiple stages is used. In addition, a bending head including a clamping die 108 provided to face the bending die 106 is used.
[0003]
The clamping mold 108 is also formed with multi-step grooves 110, 112. The material 101 is sandwiched between the clamping mold 108 and the bending mold 106, and the clamping mold 108 is revolved around the bending mold 106 to make the material 101. Bending. When bending the material 101 into different bending shapes, the material 101 is moved in the two directions indicated by the arrows XY and moved to the position of the groove 104 corresponding to the different bending shapes. Alternatively, the bending die 106 and the clamping die 108 are moved in two directions XY so that the groove 104 is located at a position corresponding to the material 101.
[0004]
[Problems to be solved by the invention]
However, in such a conventional apparatus, in order to move to a position corresponding to a different bending shape, it is necessary to move in two directions XY, and when moving the material 101, a chuck mechanism for gripping the material 101 Requires two moving mechanisms to move the two in the X and Y directions. The same applies to the case where the bending mold 106 and the clamping mold 108 are moved in two directions XY, and there is a problem that the apparatus becomes complicated and the control is complicated because the number of actuators is large.
[0005]
The subject of this invention is providing the bending apparatus which can respond to a different bending shape by simple structure.
[0006]
[Means for Solving the Problems]
In order to achieve this problem, the present invention has taken the following measures in order to solve the problem. That is,
A plurality of grooves formed in accordance with different bending shapes of a long material have a bending head having a bending die and a fastening die each formed in multiple stages, and the material is stored in the groove and bent. In a bending apparatus that revolves the clamping mold around the mold and bends the material ,
A moving mechanism for moving a moving table supported so as to be movable in a direction perpendicular to the longitudinal center of the material;
A turning mechanism for supporting a disc-like turning portion supporting the bending head on the moving table so as to be turnable around a longitudinal center of the material;
A lock mechanism capable of locking the turning of the turning portion.
[0007]
The bending head includes a sandwiching cylinder that slides the bending mold and the clamping mold in a direction orthogonal to the material, and drives the both clamping cylinders to form the clamping mold and the clamping mold. It is a bending apparatus characterized by having a clamping mechanism for clamping a material.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, reference numeral 1 denotes a long material such as a pipe or a round bar. The rear end of the material is held by a chuck mechanism mounted on a carriage (not shown), and the carriage is moved so that the material 1 is A predetermined amount can be supplied in the longitudinal direction.
[0009]
As shown in FIG. 2, a bending die 2 and a clamping die 4 are disposed on both sides of the material 1. A plurality of grooves 6 and 8 corresponding to the bending shape of the material 1 are formed in the bending die 2. The grooves 6 and 8 are formed on the outer periphery of the bending die 2, and one groove 6 corresponds to a large bending radius and the other groove 8 corresponds to a small bending radius. Both grooves 6 and 8 are formed in the bending die 2 in multiple stages.
[0010]
The clamping die 4 is also formed with a plurality of grooves 10 and 12 corresponding to both the grooves 6 and 8. When the material 1 is sandwiched between the bending die 2 and the clamping die 4, the material 1 is accommodated in the grooves 6 and 8 of the bending die 2 and the grooves 10 and 12 of the clamping die 4. .
[0011]
The bending die 2 is attached to one cylinder member 16 via a support shaft 14, and the clamping die 4 is attached to the other cylinder member 18. Both cylinder members 16 and 18 are supported by the bending drive base 20 so as to be slidable in a direction perpendicular to the material 1. Pistons 22 and 24 are slidably mounted on both cylinder members 16 and 18, and rods 26 and 28 integral with both pistons 22 and 24 protrude outside the cylinder members 16 and 18, and both rods The tips of 26 and 28 are attached to the bending drive base 20.
[0012]
One cylinder member 16, piston 22 and rod 26 constitute a clamping cylinder 30, and the other cylinder member 18, piston 24 and rod 28 constitute a clamping cylinder 32. Further, a clamping mechanism 34 is constituted by the clamping cylinders 30 and 32 and the bending drive base 20.
[0013]
An output shaft 38 of a speed reducer 36 is fixed to the bending drive base 20, and the output shaft 38 is rotationally driven via the speed reducer 36 by driving an electric motor 40 attached to the speed reducer 36. . The rotation center of the output shaft 38 and the center of the bending die 2 are arranged so as to coincide with each other. The rotation of the output shaft 38 causes the bending drive base 20 to turn around the bending die 2 so that the clamping die 4 is bent. It is configured to revolve around the mold 2. In this embodiment, the bending head 42 is configured by the bending die 2, the fastening die 4, the support shaft 14, the clamping mechanism 34, the bending drive base 20, the speed reducer 36, and the electric motor 40.
[0014]
The reduction gear 36 is attached to a support member 44, and a turning portion 46 is formed on the support member 44. The turning part 46 is formed in a disk shape, and a large-diameter hole 48 is formed at the center of the turning part 46. The material 1 is inserted through the large diameter hole 48.
[0015]
The swivel unit 46 is supported by the movable table 50 via the holding member 49 so as to be able to swivel around the center in the longitudinal direction of the material 1. Further, a bolt 52 is screwed into the holding member 49, and by rotating the bolt 52, the tip of the bolt 52 comes into contact with the turning portion 46, and the turning of the turning portion 46 can be locked. Yes. In the present embodiment, a turning mechanism 54 is configured by the turning portion 46, the holding member 49, and the moving base 50. Further, the bolt 52 constitutes a lock mechanism 56.
[0016]
The moving table 50 is supported so as to be movable along a pair of rails 60 and 62 laid on the mounting member 58, and the moving direction of the moving table 50 is configured to be orthogonal to the longitudinal direction of the material 1. . A moving cylinder 64 is attached to the attachment member 58, and the moving cylinder 64 is driven to move the moving table 50 along the rails 60 and 62. In the present embodiment, a moving mechanism 66 is configured by the moving base 50, the rails 60 and 62, the mounting member 58, and the moving cylinder 64.
[0017]
A nose member 68 passed through the large-diameter hole 48 is attached to the attachment member 58, and the nose member 68 is configured to hold the material 1 penetrating the attachment member 58 in the vicinity of the bending die 2. The attachment member 58 is attached to the apparatus main body (not shown).
[0018]
Next, the operation of the bending apparatus of this embodiment described above will be described.
First, prior to bending, as shown in FIG. 4, the bolt 52 is loosened and the turning portion 46 is turned around the longitudinal center of the material 1. In the state where the material 1 is clamped by the bending mold 2 and the clamping mold 4 by the clamping mechanism 34, the centers of the one groove 6, 10 and the other groove 8, 12 according to the bending shape are the movable table. The swivel unit 46 is swung so as to be aligned in a straight line in the movement direction of 50, and the swivel unit 46 is locked by tightening the bolt 52.
[0019]
On the other hand, when bending is first performed by one of the grooves 6 and 10 corresponding to a large bending radius, the moving cylinder 64 is driven so that the center of the one groove 6 and 10 and the center in the longitudinal direction of the material 1 are moved. Match. Even when the bending die 2 is replaced with another bending die corresponding to another bending shape, the turning portion 46 is turned so that the plurality of grooves are aligned.
[0020]
Then, the material 1 is fed between the bending die 2 and the clamping die 4 by moving a carriage (not shown). Next, both clamping cylinders 30 and 32 are driven to clamp the material 1 between the bending mold 2 and the clamping mold 4. Therefore, the material 1 is accommodated in one of the grooves 6 and 10.
[0021]
Subsequently, the electric motor 40 is driven to rotate the bending drive base 20 via the speed reducer 36 and the output shaft 38. Therefore, the bending die 2 rotates around its center, and the clamping die 4 revolves around the bending die 2. Therefore, the material 1 is bent with a large bending radius according to the grooves 6 and 10 according to the revolution angle.
[0022]
On the other hand, when bending with a small bending radius corresponding to the other grooves 8 and 12, the clamping cylinders 30 and 32 are driven to release the material 1 between the bending mold 2 and the clamping mold 4. Then, a predetermined amount of material 1 is supplied by moving a carriage (not shown).
Next, the moving cylinder 64 is driven, and the moving table 50 is moved along the rails 60 and 62 in the direction of arrow A so that the centers of the other grooves 8 and 12 coincide with the longitudinal center of the material 1. . At that time, the bending die 2 and the clamping die 4 are separated from the material 1 as shown by a two-dot chain line in FIG. 4, so that the material 1, the bending die 2 and the clamping die 4 do not interfere with each other. .
[0023]
After moving the movable table 50, the clamping cylinders 30 and 32 are driven to clamp the material 1 between the bending mold 2 and the clamping mold 4. Thereby, the raw material 1 is accommodated in the other grooves 8 and 12. After the clamping, the electric motor 40 is driven to turn the bending drive base 20 via the speed reducer 36 and the output shaft 38. Therefore, the bending die 2 rotates around its center, and the clamping die 4 revolves around the bending die 2. Therefore, the material 1 is bent with a small bending radius according to the other grooves 8 and 12 according to the revolution angle.
[0024]
In this way, by moving the movable table 50 in one direction, the bending head 42 can be moved according to the one groove 6, 10 and the other groove 8, 12, corresponding to a plurality of bending shapes. be able to. Therefore, one moving cylinder 64 may be provided as an actuator as in the present embodiment, and the apparatus is miniaturized and control is facilitated.
[0025]
The present invention is not limited to such embodiments as described above, and can be implemented in various modes without departing from the gist of the present invention.
[0026]
【The invention's effect】
As described above in detail, the bending apparatus of the present invention can move the bending head in accordance with a plurality of grooves by moving the moving table in one direction, and can cope with a plurality of bending shapes. Therefore, there is an effect that the apparatus is downsized and the control is facilitated with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a front view showing, in section, a part of a bending apparatus as an embodiment of the present invention.
2 is a cross-sectional view taken along the line BB in FIG.
FIG. 3 is a plan view of the bending apparatus according to the present embodiment.
FIG. 4 is an explanatory diagram for explaining the operation of the bending apparatus according to the present embodiment.
FIG. 5 is an explanatory diagram for explaining the operation of a conventional bending apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,101 ... Material 2,106 ... Bending die 4, 108 ... Clamping die 6, 8, 10, 12, 102, 104, 110, 112 ... Groove 16, 18 ... Cylinder member 20 ... Bending drive stand 30, 32 ... Clamping Cylinder 34 ... clamping mechanism 36 ... speed reducer 38 ... output shaft 40 ... electric motor 42 ... bending head 46 ... turning part 50 ... moving table 52 ... bolt 54 ... turning mechanism 56 ... lock mechanism 64 ... moving cylinder 66 ... moving mechanism

Claims (1)

A plurality of grooves formed in accordance with different bending shapes of a long material have a bending head having a bending die and a fastening die each formed in multiple stages, and the material is stored in the groove and bent. In a bending apparatus that revolves the clamping mold around the mold and bends the material,
A moving mechanism for moving a moving table supported so as to be movable in a direction perpendicular to the longitudinal center of the material;
A turning mechanism for supporting a disc-like turning portion supporting the bending head on the moving table so as to be turnable around a longitudinal center of the material;
A lock mechanism capable of locking the turning of the turning portion,
The bending head includes a sandwiching cylinder that slides the bending mold and the clamping mold in a direction orthogonal to the material, and drives the both clamping cylinders to form the clamping mold and the clamping mold. A bending apparatus having a clamping mechanism for clamping a material.

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