JP2687497B2 - Rotary bender machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a rotary bender machine, which is used for molding a frame or the like for an automobile having a three-dimensionally bent shape. .

(Prior Art) A conventional rotary bender machine uses a rotary cylinder to rotate a rotary table while rotating the hydraulic tension.
It is a machine that bends the work around the bender type by applying tension to the work with a cylinder and moving the tension post to the bender type following the rotation.
This is shown in FIG.

In (a) and (b) of FIG. 5, reference numeral 10 is for bending by the frame of the automobile, 7 is a tension chuck,
Reference numeral 9 is a bender type chuck, in which tension force is applied to the work 10 by the tension cylinder 6 and rotary cylinder 1
Then, the rotary table 3 rotates via the rack and pinion 2, and accordingly, the tension post 5 is pulled by the work 10 and moved to the rotary table 3 side, so that the work 10 is wound around the bender type 9 and bent. Is processed.

In addition, the hint is attached by the check pinch 4 and 3
The dimensional bending is performed by moving the tension post 5 up and down by the post vertical cylinder 8.

(Problems to be solved by the invention) However, the slide mechanism of the tension cylinder 6 and the tension post 8 of the rotary bender machine is controlled by the action of hydraulic pressure, and the operating temperature of the hydraulic pressure and the rotation of the rotary table 3 are controlled. There is a problem that variations in the bending shape of the work 10 occur due to variations in speed and slide resistance of the tension post 5, and in particular, movement of the tension post due to the operation of the tension cylinder 6 has a great influence.

SUMMARY OF THE INVENTION The present invention has a technical object to provide an apparatus which does not cause variations in bending shape due to slide resistance of each mechanism when a rotary bending machine performs a two-dimensional or three-dimensional bending shape on a work.

[Configuration of the invention]

(Means for Solving the Problems) Means taken for solving the technical problems are as follows. That is, the rotary table is rotated by the movement of the rotary cylinder, the work is held by the tension chuck provided on the tension post and the chuck provided on the bender type, and the tension post is bender type on the work by the tension cylinder. To a rotary bender machine in which the work is wound around the bender type to perform two-dimensional bending, and the three-dimensional bending is performed by the upper and lower sides of the tension post provided on the tension post and the tension post. The tension post is provided with a cam roller, the cam roller contacts the cam plate, and the tension post moves to the bender type while tensioning the work, thereby bending the work two-dimensionally or three-dimensionally. It is a rotary bender machine that does.

(Operation) Tension is applied to the work by the tension cylinder, the tension cylinder is locked, and then the bender type is rotated by the rotary cylinder.

By the cam plate fixed to the rotary cylinder and the cam roller fixed to the tension post, the tension post moves to the bender type side and the work is two-dimensional or three-dimensional.
It can be bent into a dimension. In this case, the movement of the tension post is not the action of the tension cylinder due to hydraulic pressure,
Since it is implemented by the cam plate and the cam roller, the mechanical work of the cam and the roller allows the work to be bent without variation.

Example An example will be described below.

In FIG. 1, 1 is a rotary cylinder, 2 is a rack and pinion, 3 is a rotary table, and the rotary table is rotated by the forward and backward movement of the rotary cylinder.

Reference numeral 4 is a retension chuck, 5 is a tension post, 6 is a tension cylinder, 7 is a tension chuck, and the post cylinder 8 is used to move the wrench chuck 4 up and down.

Reference numeral 9 is a bender type, 11 is a cam roller fixed to the tension post 5, and 12 is a cam plate fixed to the cylinder 1.

To explain the operation in the above-mentioned structure, the work tension chuck 7 and the bender type chuck 9a are used for clamping.

Next, a tension force is applied to the work by the tension cylinder 6 to lock the tension cylinder, and then the rotary table 3 is rotated by the rotary cylinder 1 via the rack and pinion 2.

In addition, the cam plate 12 conforming to the shape of the bender die 9 also moves forward to the rotary cylinder, and along with this, the tension post 5 moves to the rotary table 3 side via the cam roller 11 to move the work piece 10 to the bender die 9. Is wrapped and bent.

When a three-dimensional bending process is required, the tension post 5 is bent up and down by the post up-and-down cylinder 8 so that the two-dimensional bending is performed by advancing the tension post 5.

The three-dimensional bending is obtained above and below the tension post 5, and the upper twist is performed by the tick twist 4.

In the rotary cam bender of the present embodiment, the tension post is mechanically determined by the cam plate 12 which fits the bending shape of the rotary cylinder 1 in accordance with the bending shape of the rotary cylinder 1 to determine the movement locus of the tension post 5. By eliminating the variations in the slide resistance and the sliding speed when the post 5 is moved, it is possible to perform bending with less variation in two-dimensional bending.

2 to 3 show another embodiment, and FIG. 2 shows a device in which a cam plate 12 is attached to the shaft of a rotary table 3, a rack and pinion having a transmission gear 13 and a cam plate.
It is something to be transmitted to 12.

 Next, the operation sequence of the rotary cam bender machine is shown.

(Set work 10) → (Clamp on bender type chuck-9, tension chuck 7) → (Apply tension to work 10 with tension cylinder 6) →
(In the rotary cylinder 1, the rotary table 3 is rotated through the rack and pinion, the work is wound around the bender die 9, and the cam plate 12 is moved forward, so that the tension post 5 is moved through the cam roller 11 to the rotary table 3. 3) → (Check operation 4; move tension post 5 up and down with post up / down cylinder) → (Stretch bending completed) → (Tension cutting) →
(Bender type chuck unclamp 9, tension chuck unclamp) → (workpiece removal) → (tension cylinder 6 to return to the original position by tension post 5; post up / down cylinder 8 to tension post 5
Return to original position, return to original position with check pin 4) ((Return to original position via rotary and pinion 2 by rotary cylinder 1 retracts rotary table 3 and cam plate 12, respectively) → Completed all operations Three-dimensional bending is completed.

 FIG. 4 is a perspective view of the main part of this embodiment.

[Effects of the Invention] The present invention has the following effects. That is, variations in the bending shape of the work are reduced, and in particular, variations in two-dimensional bending can be reduced by using the cam plate.

[Brief description of the drawings]

FIG. 1 is an explanatory view of the present embodiment, (a) is a plan view, (b) is a side view, FIGS. 2 and 3 are explanatory views of other embodiments, and FIG.
The figure is an external perspective view of FIG. 1, and (a) and (b) of FIG. 5 are perspective views of a conventional example. 1 ... Rotary cylinder, 3 ... Rotary table, 4 ... Tension chuck, 5 ... Tension post, 6 ... Tension cylinder, 9 ... Vendor type, 10 ... Work, 11 ... Cam roller, 12 …… Cam plate.

Claims (1)

(57) [Claims] 1. A rotary table is rotated by movement of a rotary cylinder, and a tension chuck provided on a tension post and a chuck provided on a bender type hold the work, and the tension cylinder applies the tension to the work. Following the rotation of the rotary table, the tension post moves to the bender type and the work winds around the bender type to perform two-dimensional bending, and further the three-dimensional bending by the vertical movement of the tension post and the tension post provided on the tension post. In the rotary bender machine, the cam plate is fixed to the rotary cylinder, the tension roller is provided with a cam roller, the cam roller contacts the cam plate, and the tension post is applied while tensioning the work. Move to the bender type and work is two-dimensional or three-dimensional. Based on bending rotary vendor machine to perform.