JPH0444255Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a roller die device for elongating a wire rod.

(Prior Art) An example of a roller die device in which two rollers each having a special hole shape, that is, an oval hole shape or a round hole shape, are supported rotatably in relative positions within a housing are shown in FIGS. Shown in Figure 4.

That is, in these drawings, reference numeral 1 indicates rollers disposed opposite to each other, and a shaft 2 that rotatably supports the rollers is supported at both ends by a housing 5 via a bearing 3 or a bearing 3 and a chock 4. .

(Problems to be solved by the invention) In the conventional roller die device as described above,
In both cases, each roller has a shaft support structure at both ends,
The diameter of the roller must necessarily be larger than the diameter of the shaft that supports it. Particularly when processing a thin drawn wire rod with a diameter of φ3 mm or less, if the distance between adjacent roller dies in the drawing direction is large and the roller diameter is large, the wire rod will fall. In order to prevent this, it is effective to reduce the diameter of the roller, but if the diameter of the roller is reduced, the shaft diameter and bearing diameter will also become smaller, resulting in a decrease in strength and life. This problem arises. Further, in the apparatus shown in FIG. 4, the bearing portion is not sealed, and it is unsuitable for wet wire drawing or the use of powder lubricants other than bearing lubricants.

The present invention was made to solve the above-mentioned problems, and the roller diameter is made as small as possible to increase the advantage in terms of pulling force and separation force, and the shaft diameter is made as large as possible to increase strength. The purpose of the present invention is to provide a device that can satisfy all the basic conditions required for this type of roller die device, such as increasing the advantage in terms of service life and reducing the distance between adjacent roller dies in the drawing direction. shall be.

(Means for Solving the Problems) A roller die device according to the present invention includes two roller bodies forming a pair with a cantilevered shaft structure in which a shaft portion and a roller formed at one end thereof are integral. , these rollers are arranged facing each other to form a hole pattern, and
Each of these shaft parts is rotatably supported via a bearing in an eccentric hole of a roll chock built into the housing, and a space for adjusting the proximity gap between the pair of opposing rollers in the central space of the housing is provided. The gist is that a roll chock rotation mechanism is provided.

(Function) The roller die device according to the present invention has two roller bodies that form a pair of cantilevered shafts in which a shaft portion and a roller formed at one end form an integral shaft, and a hole shape is formed by these rollers. The shafts of the rollers are rotatably supported via bearings in eccentric holes of a roll chock built into the housing, and the pair of rollers are arranged opposite each other in the central space of the housing. Since the structure is equipped with a roll chock rotation mechanism to adjust the proximity gap, the opposing small diameter rollers provide excellent pulling force and separation force, and the large diameter shaft can also be used with the large diameter shaft. Since it is supported by bearings, it has great strength, and the distance between the rollers can be finely adjusted by rotating the roll chock.

(Example) The present invention will be described below based on an example shown in FIGS. 1 and 2.

In the figure, reference numeral 6 denotes a roller body, which is composed of a small diameter roller 7 formed at one end and a large diameter two-stage shaft portion 8 integral with the roller. The rollers 7 are positioned close to each other to form a hole pattern, thereby forming a set of roller dies. The shaft portion 8 is inserted into and supported by an eccentric hole 11 of a roll chock 10 via a bearing 9.

By the way, the roll chock 10 is rotatably fitted precisely into the hole 13 of the housing 12.
A gear 14 is provided at the outer end, and a chock lid 15 is screwed into the outer end opening, making the bearing portion completely sealed.

Reference numeral 16 denotes a pull bolt which passes through the support frame 17 attached to the outside of the bearing 12 and whose tip is screwed into the screw hole of the chock lid 15. Numeral 18 denotes a pull bolt which is screwed through the support frame 17 and whose tip is screwed into the screw hole of the chock lid 15. The position of the roll chock 10 is determined and fixed by appropriately adjusting both bolts 16 and 18, which are press bolts pressed against the end faces.

19 is a roll chock rotation mechanism, which is operated to rotate the roll chock 10;
The circumferential position of the eccentric hole 11 is changed to cause the roller body 6 to move slightly, thereby changing the distance between the axes of both roller bodies 6 and appropriately determining the proximity gap between the rollers 7.

By the way, the roll chock rotation mechanism 19 in this embodiment meshes the driving gear 20 or idler gear 20' with each gear 14 provided on the roll chock 10 of the pair of rollers 7, and adjusts one of these driving gears 20. They are connected by a shaft 21, and are rotated by manually operating an actuating portion 21' provided on this adjustment shaft 21 with a spanner, etc., so that both roll chocks 10 forming a pair can be rotated in synchronization with each other. Note that the adjustment shaft 21 may be rotated by an electric, hydraulic, or pneumatic drive mechanism via a reduction gear or the like.

Further, in this embodiment, two sets of roller dies are arranged in one housing 12 with their phases changed at right angles, and in this case, the hole shape of the roller 7 may be a round hole shape. For example, the other set has an oval hole type, and if necessary, a plurality of sets of such roller dies are arranged in tandem and used. In addition,
It is also possible to incorporate the oval hole type roller die and the round hole type roller die into the housing 12 separately, and to use a plurality of sets arranged in tandem by alternately combining them.

(Effects of the Invention) As explained above, the roller die device according to the present invention has two roller bodies that form a pair of cantilevered shafts in which the shaft and the roller formed at one end are integral. These rollers are arranged to face each other to form a hole shape, and their shafts are rotatably supported via bearings in eccentric holes of a roll chock built into the housing, and are opposed to each other in the central space of the housing. Since the structure is equipped with a roll chock rotation mechanism to adjust the proximity gap between the pair of rollers, excellent pulling force and separation force can be obtained by the opposing small diameter rollers, and the roller die can be rotated at right angles. When the wire rods are arranged in tandem and used in blocks, the spacing between the rollers becomes smaller, which has the effect of preventing the wire rod from falling over. Furthermore, since the shaft diameter and bearing diameter can be increased, it is extremely advantageous in terms of strength and life.
Furthermore, by making the bearing part a sealed structure, there is an effect that the pultrusion lubrication method can be applied to both dry and wet methods.

[Brief explanation of drawings]

Fig. 1 is a front view in longitudinal cross section of an embodiment of the present invention, Fig. 2 is a side view, and Figs. 3 and 4 are partially cutaway views of the structure of a conventional roller die device. It is something. 6 is a roller body, 7 is a roller, 8 is a shaft portion, 9 is a bearing, 10 is a roll chock, 11 is an eccentric hole, 12 is a housing, 14 is a gear, and 19 is a roll chock rotation mechanism.

Claims (1)

[Scope of utility model registration request] Two roller bodies forming a pair with a cantilevered shaft structure in which a shaft portion and a roller formed at one end thereof are integral are arranged facing each other to form a hole shape with these rollers, and the respective shaft portions are is rotatably supported via a bearing in an eccentric hole of a roller chock built into the housing, and a roll chock rotation mechanism is provided for adjusting the proximity gap between the pair of opposing rollers in the central space of the housing. A roller die device characterized by: