JPH0217259B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a manufacturing apparatus for forming a strip of irregular cross-section having a convex or concave cross-section.

[Conventional technology]

Generally, this type of manufacturing equipment uses a mold having a protrusion extending in the longitudinal direction of the material, and a rolling roll whose axis is oriented in the longitudinal direction of the material and is moved in the width direction of the material. The structure is such that a part of the material is rolled, and this rolling is repeated in the longitudinal direction of the material to produce a strip with irregular cross section.

By the way, when rolling a material with a rolling roll, the material receives a pressing force in the width direction as a rolling force. Therefore, there was a risk that the material would shift in the width direction.

Therefore, in conventional manufacturing equipment, presser rolls with their axes oriented in the width direction of the material are rotatably disposed on both ends of the rolling roll in the axial direction, and the material is held down by the presser rolls. This was to prevent the material from shifting in the width direction during rolling.

[Problem that the invention seeks to solve]

However, in the conventional manufacturing apparatus, there are bearings or the like at both ends of the rolling roll to support the rolling roll, and therefore the presser roll has to be installed at a location away from the rolling roll. For this reason, there was a problem in that reliability in preventing material displacement was low.

[Purpose of the invention]

This invention was made to solve the above problem, and aims to provide an apparatus for manufacturing strips with irregular cross-sections that can highly reliably prevent the material from shifting in the width direction. .

[Structure of the invention]

In order to achieve the above object, this invention forms an annular groove on the outer periphery of a rolling roll, and between this annular groove and a die, a presser roll that presses the material against the die is arranged such that its axis is aligned with the edge of the material. It is configured to be rotatable in the width direction.

〔Example〕

Hereinafter, the attached first embodiment of the present invention will be described.
This will be explained with reference to FIGS. 6 through 6. In addition, the first
The figure is a perspective view showing the main parts of the manufacturing apparatus according to the present invention, and FIG. 2 is a partially cutaway front view with some parts omitted.

In FIG. 2, reference numeral 1 indicates a lower frame, and reference numeral 2 indicates an upper frame. In the lower frame 1,
A bearing 3 is provided. A mold stand 4 is swingably provided on this bearing 3. This mold stand 4
A mold 5 is attached to the upper surface of. This mold 5 is for rolling a strip of irregular cross-section with a convex cross-section, and as shown in FIG. Projections 6, 6 are formed for this purpose.
The tip of this protrusion 6 is an inclined portion 6a that slopes upward from the tip side to the rear end side, and the degree of processing of the material W gradually increases due to this inclined portion 6a. There is. Further, a flat relief part 6b is formed in the center of the inclined part 6a, extending from one end in the width direction to the other end. This relief part 6b
is set to be equal to or slightly wider than the width of the annular groove 11a of the rolling roll 11, which will be described later.

Further, stoppers 7 and 8 are provided on each side of the bearing 3 so as to be slidable in the width direction of the material W, that is, in the left-right direction in FIG. These stoppers 7 and 8 are for preventing the mold table 4 from swinging in either direction, and both stoppers 7 and 8 are connected to each other, and one stopper 7
When (8) enters between the bearing 3 and the mold stand 4,
The other stopper 8 (7) is designed to come out from between the bearing 3 and the mold stand 4.

Further, a housing 9 is disposed between the lower frame 1 and the upper frame 2. This housing 9 includes a pair of backup rolls 1.
0 and 10 are rotatably supported with their axes directed in the longitudinal direction of the material W. Below between the pair of backup rolls 10, 10, a rolling roll 11 is rotatably disposed parallel to them and in contact with both rolls 10, 10. This rolling roll 11 is supported by a spring (not shown) that biases both ends thereof toward the upper frame 2 side, and the biasing force of this spring causes the back up rolls 10, 10 to be While being brought into contact with the frame 2, the backup roll 10,
10 and housing 9 are supported.

Further, on the side of the housing 9, a crankshaft 12 is arranged which is rotated by a drive source (not shown). A rod 13 is provided between the crankshaft 12 and the housing 9, and one rotation of the crankshaft 12 moves the rolling roll 11 through the housing 9 and back-up rolls 10, 10 as shown in FIG. It is designed to make one round trip in the left and right direction. Furthermore, when the rolling roll 11 makes one reciprocation, the stoppers 7 and 8 move in and out of the space between the bearing 3 and the mold stand 4 once. That is, when the rolling roll 11 moves to the right from the state shown in FIG. . At this time, since the stopper 8 is connected to the stopper 7, it comes out from between the bearing 3 and the mold stand 4. Therefore, the mold stand 4 can rotate in the direction of arrow A, but cannot rotate in the direction of arrow B. On the other hand, when the rolling roll 11 moves left and right from the rightward movement limit position and leaves the left edge of the material W, the stopper 8 is pushed by the housing 9 and enters between the bearing 3 and the mold base 4. At the same time, the stopper 7 comes out from between the bearing 3 and the mold stand 4. In this state, the mold stand 4
can rotate in the direction of arrow B, but cannot rotate in the direction of arrow A.

Further, FIGS. 4 and 5 each show the feeding means used in this manufacturing apparatus.

The feeding means 14 shown in FIG. 4 rotates a winding machine 15 for winding up the molded product W _G that has been rolled by a rotary drive source 16 such as a motor via a belt 17 _. It is designed to constantly apply tension to the. Here, the frictional force acting between the belt 17 and the pulley 15a of the winding machine 15 and the pulley 1 of the belt 17 and the rotational drive source 16 are
6a is set to be smaller than the holding force for the material W by the rolling roll 11 and the mold 5 during rolling. Therefore, when processing by the rolling rolls 11 starts, the material W is stopped, and is fed a predetermined length until the rolling rolls 11 pass the material W and start rolling again. This feed amount is, for example, the inclined portion 6a of the protrusion 6 in the mold 5.
It is set to about 1/4 of the length obtained by subtracting the width of the relief portion 6b from the length l.

On the other hand, the feeding means 18 shown in FIG. 5 utilizes a cam mechanism and a ratchet mechanism. That is, the cam 19 is connected to the large gear 2 by the crankshaft 12.
0 and a small gear 21. Here, the large gear 20 and the small gear 2
The ratio of the number of teeth to 1 is set to 2:1. Therefore, the cam 19 rotates twice when the crankshaft 12 rotates once, that is, when the rolling roll 11 makes one reciprocation. Further, the cam 19 constitutes a positive cam mechanism with the slider 22, and is formed in a shape that moves the slider 22 in the direction of arrow C when the rolling roll 11 is in a non-processing state where the workpiece W is not processed. has been done. And slider 2
2 is moved in the direction of arrow C, the swinging arm 23 rotates around its one end, and the claw 24 provided on the swinging arm 23 causes the swinging arm 23 to move in the direction of arrow C.
The feed roll 25 centered on the rotation center of
This feed roll 2 is rotated a predetermined amount in the direction of
The molded product WG pressed by the pinch rolls 26 is fed to the molded product _WG by a predetermined amount.
It should be noted that when the slider 22 moves in the direction of arrow D, the ratchet mechanism provided on the pawl 24 operates, so that the feed roll 25 is not rotated in the direction of arrow F.

By the way, as mentioned above, when the work W is formed by the manufacturing apparatus having the above configuration, the work W may be displaced in the width direction due to the pressing force applied to the work W in the width direction by the rolling rolls 11. be. Particularly, when the workpiece W is fed, the workpiece W may be lifted up from the mold 5, and in such a case, the displacement of the workpiece W appears to be large.

Therefore, in this manufacturing apparatus, the vicinity of the forming part of the workpiece W by the mold 5 and the rolling roll 11 is pressed against the mold 5. That is, as shown in FIG. 1, an annular groove 11a is formed in the center portion of the outer periphery of the rolling roll 11, that is, in a portion corresponding to the escape portion 6b of the protrusion 6 of the mold 5 described above. A presser roll 27 is installed between the annular groove 11a and the mold 5. Both ends of this presser roll 27 are rotatably and vertically movably supported by support parts 28 provided on the mold stand 4. Moreover, the presser roll 27 is urged toward the mold 5 by a spring or an air cylinder (none of which are shown), and is configured to press down the center portion of the workpiece W at the forming processing location. .

As described above, in this manufacturing apparatus, the annular groove 11a is formed on the outer periphery of the rolling roll 11, and the presser roll 27 is installed between the annular groove 11a and the mold 5, so that the forming process of the workpiece W is possible. It is possible to press down the vicinity of the point. Therefore, displacement of the workpiece W during forming by the rolling rolls 11 and lifting of the workpiece W during feeding can be prevented with high reliability.

Next, a case in which a strip with an irregular cross section is formed by the manufacturing apparatus having the above configuration will be described with reference to FIG. 6.

As shown in FIG. 6A, the rolling roll 11 is now positioned at the leftward movement limit position. At this time, the mold base 4 is allowed to rotate counterclockwise, but is prevented from rotating clockwise by the stopper 8. From this state, the rolling roll 11 is moved to the right and placed on the left edge of the workpiece W. Then, the mold stand 4 rotates counterclockwise as shown in FIG. 1B. Therefore, the left side portion of the workpiece W is not rolled.

However, as shown in FIGS. 6C and D, when the rolling roll 11 passes through the center of the workpiece W, the rolling roll 11 and the molding die are prevented from rotating clockwise. 5 starts the molding process.

When the rolling roll 11 passes the workpiece W, the stoppers 7 and 8 begin to move to the right in the figure, and the stopper 7 engages with the mold stand 4, while the engagement of the stopper 8 with the mold stand 4 is released. Ru. Therefore, the mold stand 4 cannot be rotated counterclockwise.

When the rolling roll 11 reaches the rightward movement limit position, it begins to move to the left. Note that the workpiece W is fed by a predetermined amount after the rolling roll 11 passes the workpiece W until it reaches the workpiece W again, but in FIG. 6, for convenience of explanation, the workpiece W is not fed. It is shown as a thing.

When the rolling roll 11 reaches the center of the workpiece W, rolling processing of the workpiece W starts from the center toward the left edge. When the rolling roll 11 passes the left edge of the workpiece W, the stoppers 7 and 8 start moving rightward, and the workpiece W is fed by a predetermined amount, as shown in FIGS. 6G and 6H. The state shown in Figure 6A is reached.

By repeating the above-described series of operations, the workpiece W is formed sequentially along its longitudinal direction.

In addition, in the above embodiment, the annular groove 11a
Although only one is formed, a plurality of presser rolls 27 may be provided correspondingly.

〔Effect of the invention〕

As explained above, according to the apparatus for manufacturing strips with irregular cross-sections of the present invention, an annular groove is formed on the outer periphery of the rolling roll, and a presser roll is provided between the annular groove and the die to press the material against the die. Since it is configured to be rotatable with its axis pointing in the width direction of the material, the presser roll can press down a part of the workpiece very close to the forming part, thus making it possible to form the workpiece. The effect is that it is possible to reliably prevent the workpiece from shifting in the width direction during loading and feeding.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the main parts of the apparatus for manufacturing irregular cross-sectional strips according to the present invention, Fig. 2 is a partially cutaway front view with some parts omitted, and Fig. 3 shows an example of a mold. The perspective view shown, FIGS. 4 and 5 are schematic configuration diagrams each showing an example of the feeding means, and FIGS. 6A to 6H are diagrams showing the state of the molding process. 5... Mold, 11... Roll, 11a...
Annular groove, 27...presser roll.

Claims (1)

[Claims] 1 A mold on which a part of a long strip-shaped material that is fed intermittently in the longitudinal direction is placed; In an apparatus for producing strips with irregular cross-sections, comprising a rolling roll that rolls the material in cooperation with the mold, an annular groove is formed on the outer periphery of the rolling roll, and a ring groove is formed between the annular groove and the mold. An apparatus for manufacturing strips with irregular cross-sections, characterized in that a presser roll for pressing the material against the mold is rotatably provided with its axis directed in the width direction of the material.