JPH01138030A - Device for bending axial rod and the like - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a bending device for shaft rods, etc., and particularly to a bending device that enables accurate and automatic processing of shaft rods such as suture needles. It is related to.

<Prior art> Conventional methods for bending this type of shaft rod, etc. into an arc shape include a press method using a press mold, a three-roll method using three rolls, etc. However, the former has the disadvantage that the mold is cylindrical and damages the workpiece, and the latter has the disadvantage that the insertion end is easily damaged, and in particular, the tip of the pointed workpiece is bent.

The present applicant has already developed and put into practical use a technique as disclosed in Japanese Patent Publication No. 18256/1983 in order to improve the conventional processing method and apparatus mentioned above. This special public service 1986-18
The technique shown in Publication No. 256 is a method in which a cylindrical winding roll and a belt are combined, and a shaft rod, etc. is inserted between them and rolled up, thereby bending the shaft rod, etc. into an arc shape. . In addition, when inserting the shaft rod etc. into the belt, a flat plate-shaped stand or auxiliary plate on which the belt is placed has been used.

<Problem to be solved by the invention> However, although the technique shown in Japanese Patent Publication No. 60-18256 mentioned above is extremely effective when carried out manually, it is insufficient when carried out automatically. However, there were various problems as exemplified below.

In other words, since the position of the shaft that is automatically fed onto the belt cannot be controlled in the width direction of the belt, the direction is not determined at all, and the shaft is machined while being placed diagonally on the belt. There was a problem. In addition, when attempting to provide a needle material supply guide to prevent this, there were problems such as the auxiliary plate and the belt on the auxiliary plate getting in the way and making it difficult to properly install the guide.

The processing device according to the present invention solves the conventional problems as mentioned above.
,7. This relates to a completely new technology that has been developed.

<Means for Solving the Problems> The present invention provides a shaft comprising a winding roll, an auxiliary roll adjacent to the roll, and a metal belt that passes between the two rolls and wraps around a part of the winding roll. In a bending device for a rod or the like, the metal belt is used as a shaft rod supply/insertion device that is close to the winding start part when feeding the shaft rod and can be retreated to a position out of the way when discharging the shaft rod after processing. This is a bending device for a shaft rod, etc., characterized in that it is installed along the vicinity where the rod is wound around the winding roll.

As described above, in the present invention, an auxiliary roll is placed adjacent to the winding roll, and a metal belt is passed between these rolls, and when the shaft rod is supplied, it is close to the winding start part, and the shaft after processing is A shaft rod feeding/inserting device that can be moved back to a position out of the way when discharging the rod is provided, so that the shaft rod is inserted between the winding roll and the metal belt by the shaft rod feeding/inserting device. It is possible to feed the shaft to an accurate position while controlling the direction in which the shaft is inserted, and when taking out the shaft, this shaft feeding and inserting device moves back as necessary, so it does not interfere with the metal bell) or the auxiliary plate. The shaft rod that has been machined can be taken out smoothly without any interference.

<Example> An example of the processing apparatus according to the present invention will be specifically described as follows.

The processing device according to the present invention overcomes the above-mentioned drawbacks of the conventional method.
It was developed. First, the basic apparatus for carrying out the method according to the present invention will be explained with reference to FIG. Pass 3,
The right side of the bell I-3 from the roll is extended in an appropriate direction to prevent interference with other parts, and further, a shaft rod such as a needle material is sequentially supplied close to the winding roll 1 and the metal bell (-3). The gutter-like guide 4 is provided so as to be slidable in the horizontal direction.

Therefore, in the processing method according to the present invention, the guide 4 can be provided without being interfered with by the auxiliary plate or the belt, and the direction of the shaft rod (not shown) is regulated by the guide 4. It is precisely fed between the metal belt 3 and the take-up roll 1, and then the shaft rod is rolled up together with the belt 3 into the take-up roll 1, and at the same time the auxiliary roll 2
The shaft rod is bent into an arc shape along the outer peripheral surface of the winding roll 1 while being pressed by the belt 3, and by further rotating the winding roll 1 in the reverse direction, the shaft rod is rewound together with the belt 3, and the shaft rod that has been bent is discharged downward. You can take it out. If the guide 4 is in the way when discharging the shaft, it can be slid back to form a discharge passage.

Next, in the second time, the guide 4 has a ■-shaped groove 4a in the axial direction on its second surface, and the shaft rod insertion device 5 inserts the ■-shaped groove 4a into the guide 4.
The shaft rod 6 introduced into the groove 4a is configured to be pushed between the winding roll 1 and the belt 3 while being fed by a pushing tool 7 whose bottom cross-sectional shape is approximately the same as that of the square groove 4a.

Further, this push tool 7 is attached to a cylinder 9 via a temporary spring 8, and is configured so that the operation of the push tool 7 can be given a certain degree of flexibility by the action of the plate spring 8.

In the above embodiment, a ■-shaped groove 4a is formed on the upper surface of the guide 4.
This groove 4a is formed in accordance with the shape of the shaft rod 6 inserted into this groove 4a, for example, as shown in FIGS. 3(A) to 3(D).
As shown in the figure, it is possible to construct the groove 4a having various cross-sectional shapes.

Tido 3 whose base end is formed into a flat shape as shown in Fig. 4
When inserting the shaft (needle material) 6 for 1 and supplying the shaft 6 to the belt 3 and the winding roll 1, Q is as shown in FIG.
) It is effective to use a groove 4a having an inverted trapezoidal cross-sectional shape as shown in FIG.

In the embodiment described above, a gutter-shaped guide 4 capable of sequentially supplying a shaft rod 6 such as a needle material used for a surgical suture needle was described as an example of the shaft rod supply/insertion device. In addition to the trough-like guide 4, it is also possible to use a chuck or the like that has been conventionally commonly used when processing this type of shaft rod.

<Effects of the Invention> As described above, the processing device according to the present invention has a (
A shaft supply/insertion device consisting of a guide, a chuck, etc. is movably arranged along the vicinity of -1, so that the shaft supply/insertion device can be used to reel in shafts such as needle materials and always between the roll and the belt 7. It can be automatically fed in the correct direction and timing, and this allows the shaft rod to be accurately bent into an arc shape in the correct direction at the correct position, making it possible to automate the machining of the shaft rod at low cost. It has characteristics such as being able to be mass-produced.

[Brief explanation of the drawing]

Fig. 1 is a simplified explanatory diagram of the processing device of the present invention, Fig. 2 is an explanatory diagram of the main parts thereof, Fig. 3 is a sectional view showing the shape of the groove of the guide, and Fig. 4 is an explanatory diagram of the shaft rod. . 1 is a winding roll, 2 is an auxiliary roll, 3 is a metal belt, 4 is a guide, 4a is a groove of the guide, 5 is a shaft insertion device,
6 is a shaft rod, 7 is a push tool, 8 is a temporary spring, and 9 is a cylinder. Patent applicant Matsutani Seisakusho Co., Ltd.

Claims (1)

[Claims] a winding roll and an auxiliary roll adjacent to the roll;
In a device for bending a shaft rod, etc., which is composed of a metal belt that passes between the two rolls and wraps around a part of the winding roll, when the shaft rod is supplied, it is close to the winding start part, and the shaft after processing is A bending device for a shaft rod, etc., characterized in that a shaft rod supply/insertion device that can be retreated to a position out of the way when discharging the rod is provided along the vicinity where the metal belt is wound around the winding roll.