JPH11156403A - Feeding method into round dies and feeding device into round dies - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the involving of a blank into rolls and to improve the shape of a product by arranging a guide apron at the outlet side of the embossing rolls and forming a thickness reduction part at the one side of tip edge in the inserting direction. SOLUTION: The one side of tip edge of the blank 1 is formed as a step part 1a by reducing the thickness as in a step-shape or tapered shape, and this part is inserted toward the lower roll 4 side easily involving the blank to start the rolling. The step part 1a is made to have the thickness so that transfer of the die surface of the lower roll 4 is not acceptable. The reverse surface side of the step part 1a is pressed with the upper roll 3 and bent toward the lower roll side 4 but is not involved and can surely be laid on the guide apron 6. Further, according to progressing of the rolling, the tip part of bend- deformed part is advanced while supporting on the guide apron 6, and the working force for detaching the following side of the blank 1 from the roll 4 is generated while using this tip part as a supporting point. Then, the height of upper surface of the guide apron 6 is made to near the center side between rolls from the outer surface height of the roll 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll embossing method in which a material is passed between rolls, which are round dies, and the shape of the mold surface formed on the roll is transferred to the material by the rolling force.

[0002]

2. Description of the Related Art Hitherto, as a method of forming an uneven pattern on the surface of a material, a forming method using a roll has been proposed. In this roll molding, a method in which a mold and a material having an uneven pattern formed are passed between the rolls and pressed down, or at least one roll surface of a pair of rolls is subjected to uneven processing,
A method of rolling down the material between the rolls is employed, and the unevenness formed on the mold or roll is transferred to the material by the above-described rolling force, and embossing is performed. By the way, among the above-mentioned embossing methods, the method of forming a concavo-convex pattern on a roll and transferring this to a material can perform embossing with a lower load. Therefore, this method has an advantage that deeper embossing can be performed with a rolling mill having the same capacity.

[0003]

However, when the material is deeply embossed through a thin sheet material between the rolls, the material and the roll come into close contact with each other on the processing surface, and the material is brought into contact with the roll as the roll rotates. It turned out to be involved. In order to prevent this, a guide apron is arranged along the exit surface of the roll on the exit side of the roll with the mold surface shape, and the material discharged from between the rolls is received by this guide apron to prevent entangling. Can be considered. However, as described above, the material is sent out while being wound on the roll in a state in which the material is in close contact with the roll. Therefore, there is a problem that the leading end of the material hits the guide apron end substantially from the front, and the material is greatly deformed. For this reason, at present, a method of embossing using a sharp tool while gradually peeling the material to be sent out from the roll is adopted.
There is a problem that it takes a lot of time and labor and the production cost is greatly increased.

The present invention has been made in view of the above circumstances, and in embossing, as the material is sent out between the rolls, the material is easily peeled off from the rolls to obtain an embossed product having a good shape. It is an object of the present invention to provide a method for feeding a round mold and a device for feeding a round mold.

[0005]

Means for Solving the Problems In order to solve the above problems, among the present invention, a round mold feeding method according to a first invention is directed to a pair of rolls having at least one roll surface having a mold surface shape formed thereon. A guide apron is arranged on the exit side of one of the rolls, in which material is involved due to the shape of the mold surface during roll embossing in which the material is passed through and the mold surface shape is transferred to the material surface by the rolling force. While keeping
On one side of the leading edge of the material in the insertion direction, a thinned portion reduced in the thickness direction is formed, and the material is passed between the rolls so that the thinned portion faces the one roll side. Features. A round mold feeding method according to a second invention is characterized in that, in the first invention, the thinned portion has a stepped shape having a thin end portion. According to a third aspect of the present invention, in the round mold feeding method according to the first aspect, the thinned portion is located at a position closer to the front end of the material.
It is characterized by having a tapered shape that becomes thin.

Further, a round mold feeding device according to a fourth aspect of the present invention provides a pair of rolls having a mold surface shape formed on at least one roll surface, and one roll in which a material is involved by the mold surface shape. And a guide apron arranged on the exit side of the roll, the guide apron having a guide surface whose height position is deviated more toward the center side of the roll than the roll exit surface of the one roll. It is characterized by having. According to a fifth aspect of the present invention, there is provided a round mold feeding device having a pair of rolls having a mold surface shape formed on at least one of the roll surfaces, and including a roll of material by the mold surface shape of the rolls. Is formed of a small-width roll whose rolling surface is smaller in width than the material, and on the exit side of the small-width roll, a height deviated toward the center of the roll from the roll exit surface of the small-width roll. A guide apron having a guide surface at a position is arranged, and the guide apron is characterized in that its width direction end extends in the roll entering side direction and is located on the side of the small width roll. .

According to the present invention, a relatively thin plate thickness (for example, 2 to 1) is used.
This is particularly useful when deep embossing (for example, 8 to 30% of the sheet thickness) is applied to a material having a thickness of 0 mm). The present invention is not limited thereto, and can be applied to a case where embossing is performed on a material having various thicknesses at a desired depth. It should be noted that the embossing shape and the material of the material are not particularly limited, and the processing conditions such as the reduction ratio and the size of the roll that is a round mold and the rolling speed are not particularly limited. Selected as appropriate.

[0008] In the present invention, a method belonging to the first group is to dispose a guide apron on the exit side of a roll, ie, a round mold (hereinafter simply referred to as a roll), which rolls the material, and to form the material to be processed. The present invention relates to a method for forming a thinned portion at a tip. The above guide apron,
It can be arranged at a height position substantially along the exit surface of the roll as in the past, and even if the height position is shifted to the center side of the roll as in a processing device described later. Good. Further, as the thinned portion, a stepped shape or a tapered shape may be used. The thickness of the thinned portion and the range of its formation can be selected as appropriate, but the thickness of the thinned portion must be such that sufficient strength is obtained so that unnecessary deformation does not occur in contact with the guide apron. It is necessary to have. Note that, in the width direction, when the guide surface width of the guide apron is larger than the material in the width direction, the formation range of the thinned portion is assumed to be over the entire width of the material, and when the guide surface width is smaller than the material width, The material is formed with a width at least larger than the guide surface width. In addition, the formation range in the length direction of the thinned portion may be any as long as the front end of the material is smoothly placed on the guide surface of the guide apron. If formed in a range longer than necessary, the strength is impaired, which is not desirable.

As described above, the thinned portion is formed at the tip of the material, and the material is passed between the rolls so that the thinned portion faces the roll on which the material is wound. The surface is pressed by the other roll, and the leading end of the material is pressed and bent toward the thinned portion side. Since the inside of the deformed portion is reduced in thickness, the deformed portion moves forward without being caught in the roll, and its tip rests on the guide surface of the guide apron. Subsequently, when the rolling is continued, the tip of the deformed portion is supported by the guide surface of the guide apron while moving, and using this as a fulcrum, an acting force for separating the material from the roll is generated, and the material is gradually separated from the roll as the rolling is performed. . At this time, since the front end of the material is bent to one side, the acting force is efficiently transmitted to the rear of the material, and the material is separated well. Moreover, the deformation of the material, that is, the processed product due to the peeling is small, and the processed product having a good shape can be efficiently obtained in the peeled state.

Next, the feeding device belonging to the second group of the present invention is one in which the guide apron is deviated toward the center of the roll from the exit surface of the roll. In a general rolling mill, the guide apron is arranged so as to be substantially along the exit surface of the roll from the viewpoint of preventing the rolled material from rattling, but in the present invention, this height position is set to the height of the roll as described above. Displaced clearly toward the center. The material that reaches the exit side while being entangled in the roll hits the guide apron from an oblique direction, so the tip of the material moves smoothly onto the guide surface of the guide apron without being extremely deformed. In addition, it can be gradually peeled off the roll without damaging the shape of the processed product. Although the above-mentioned amount of deviation is not particularly limited as the present invention, it is desirable that the amount of deviation be 0.5 mm or more in order to reliably and sufficiently obtain the above-mentioned effects. If the amount of deviation is too large, the tip of the processed product cannot move smoothly on the guide surface of the guide apron, and the processed product is greatly deformed.
m or less.

In the above-mentioned apparatus, at first, since a processed product hits the guide apron, it is desirable to use a material having high rigidity at least for the distal end portion of the guide apron. It is also possible to make it replaceable as a consumable. Further, in the above-mentioned apparatus, the material can be easily peeled off from the roll after embossing without previously processing the material. After the formation, it is also possible to peel off by guiding with a guide apron whose height position is deviated as described above.

Further, in the present invention, the feeding device belonging to the third group is such that one of the rolls is constituted by a small width roll, and the height position of the guide apron arranged on the exit side of the small width roll is determined by a roll exit surface. The apron is further displaced toward the center of the roll, and the end in the width direction of the apron is extended toward the roll entry side. The small-width roll may have a width smaller than that of the material as a whole, or may have a small width only in a necessary area including a rolling surface. When the material comes into contact with the narrow roll, the material protrudes at least at one end, preferably both ends, of the narrow roll. In addition, it is desirable to extend not only one but also both ends of the guide roll according to the material.

When the material is reduced using the above-described feeding device, even if the central portion of the material is in close contact with the small width roll, the end in the width direction of the material does not adhere to the roll, but the width of the guide apron can be reliably reduced. It is placed on the end, and the end of the material moves on the guide surface of the guide apron as the processing proceeds.
Along with this movement, the leading end of the material in close contact with the narrow roll is peeled off and guided on the guide surface of the guide apron,
The entire tip portion serves as a fulcrum, and a peeling force is uniformly applied to the rear portion of the material. As a result, as the rolling progresses,
It can be peeled off satisfactorily from the narrow roll with almost no deformation of the shape. In addition, in this rolling mill, the material can be easily peeled off from the roll after embossing without having to process the material in advance, but a concave portion corresponding to the width of the narrow roll is formed at the leading end of the material. It is also possible to carry out the above-mentioned operation so that the concave portion can be fitted into a small-width roll. According to this, the material can be reliably positioned with respect to the small width roll.

[0014]

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIGS. 4mm thickness,
A material 1 having a width of 40 mm and a length of 140 mm is prepared.
The lower surface of the leading edge is cut over the entire width, and the step portion 1 is formed as a thinned portion.
a is formed. On the other hand, the embossing machine 2 for processing the material 1 has upper and lower rolls 3 and 4 arranged with a predetermined gap, and the surface of the lower roll 4 has a die having an outer peripheral length range of 1/3. An uneven surface 4a is formed as a surface shape. Guide aprons 5 and 6 are disposed on the entrance side and the exit side of the lower roll 4, respectively, and the guide apron 5 on the entrance side has a gap between the upper roll 3 and the lower roll 4 when the material 1 is placed. The height position of the guide surface is set so as to be located at the center, and the height position of the guide apron 6 on the exit side is set such that the guide surface is located along the roll exit surface of the lower roll 4. ing.

The embossing process using the above-described apparatus will be described. As shown in FIG. 3, the blank 1 is placed on the guide apron 5 so that the step 1a faces downward.
4 are rotated in the directions shown in the drawing to pass the material 1 between the rolls. The material 1 receives a stress only from the upper roll 3 or mainly from the roll 3 at the step portion 1a formed at the distal end, and is deformed so that the distal end is obliquely downwardly pressed. Further, the rear portion of the material 1 following the step portion 1a is pressed down from above and below by the rolls 3 and 4, and the uneven surface 4a formed on the surface of the roll 4 is transferred to the material 1 on the lower surface side. If the processing is continued as it is, the material 1 is gradually fed out, and the tip thereof is placed on the guide apron 6 without being caught in the roll 4 and moves on the guide surface. On the other hand, on the lower surface of the material 1 to which the mold surface shape has been transferred,
Due to the transfer of the shape, the uneven surface 4a and the processed surface of the material 1 are engaged with each other, and the material 1 is wound around the roll 4 as the rolls 3 and 4 rotate. However, since the leading end of the material 1 is supported by the guide apron 6, the supporting portion serves as a fulcrum, and the function of peeling the processed material 1 from the roll 6 works. It is gradually separated from the roll 4. At this time, since a sudden force or an excessive force is not applied to the material 1, the material 1 can be satisfactorily peeled without being forcibly deformed.
In the above-described embodiment, the step portion is formed as the thinned portion formed in the material. However, as shown in FIG. 4, the tapered surface 7 a is formed by chamfering the end of the material 7 into a square shape,
It is also possible to form a curved surface 8a at the end of the raw material 8 to provide a thinned portion.

(Embodiment 2) Next, another embodiment will be described with reference to FIGS. In this embodiment, the guide apron 16 on the output side is deviated from the outlet surface 4b of the roll 4 toward the center of the roll (downward in this embodiment). It is made of a material having a higher rigidity than the part, and is detachably attached. Only the part can be replaced if desired. Since the other configuration is the same as that of the processing machine 2 described in the first embodiment, the same reference numerals are given and the description is omitted. The material 11 to be processed
Has the same dimensions as in the first embodiment, and does not have a thinned portion with the step at its tip.

The embossing process using the above-described apparatus will be described. As shown in FIG. 5, the blank 1 is placed on a guide apron 5, and the upper and lower rolls 3 and 4 are rotated in the directions shown in the drawings to form rolls 3 and 4, respectively. The material 1 is passed through the gap, and the uneven surface 4 a formed on the surface of the roll 4 is transferred to the material 11. Material 11
Is sent out in a state of being in close contact with the roll 4 and moves while being wound in the roll 4 as the processing proceeds. Therefore, the material 1 gradually descends from the tip due to the shape of the roll 4, and finally the tip 16 of the guide apron 16.
The tip hits a. Since this end occurs when the tip of the material 1 is obliquely downward, the material 11 is not forcibly deformed, and the tip of the material 11 can be easily moved to the guide apron 1.
6. Move up. Thereafter, the leading end of the material 1 moves on the guide apron 16 and gradually separates the rear part of the material 11 from the roll 5. Then, as the processing is completed, a material having a good shape peeled from the roll 5, that is, a processed product is obtained.

(Embodiment 3) Next, another embodiment will be described with reference to FIG.
This will be described with reference to FIG. In this embodiment, the material width is larger than the surface to be machined of the material 21, and therefore, the machined surface of the lower roll 24 is formed to have a smaller width than the material 21, and the small width roll is adjusted to the machined surface. 24a
Is provided. A guide apron 5 is arranged on the entrance side of the lower roll 24 in the same manner as in the above embodiments, while a guide apron 26 according to the present invention is arranged on the exit side of the lower roll 24. I have. The guide surface of the guide apron 26 is deviated toward the center of the roll (below) from the exit surface of the narrow roll 24a, and the width thereof exceeds the width of the narrow roll 24a. In addition, small width roll 2
Both ends 26a, 26a in the width direction of the guide apron 26 which exceed the width 4a in the width direction extend toward the entry side of the roll, and the guide surface is located on the side of the small width roll 24a.
Note that this guide surface does not interfere with the material 21,
It is located below the lower surface of the material 21 installed on the entry side.

Next, the feeding method using the above-described apparatus will be described. As shown in FIG.
1, and the upper and lower rolls 3, 24 are respectively rotated in the illustrated direction to pass the material 21 between the rolls. In this state, the material 21 has both sides in the width direction protruding to the side of the small width roll 24a. When the rolls 3 and 24 are rolled down in this state, the uneven surface formed on the surface of the narrow roll 24a is transferred to the material 21 with a predetermined width. For this reason, the raw material 21 is sent out in a state of being in close contact with the small width roll 24a on the processing surface, and the small width roll 24a
It moves with being caught in. However, when the position of the leading end of the material 21 is lowered by this movement, the small width roll 2
Both side portions of the material protruding to the side of 4a hit the guide surfaces of both end portions 26a of the guide apron 26, and prevent further lowering. For this reason, the small width roll 24a
As the rotation progresses, the end of the material 21 advances on the guide surface, and a force for peeling the material 21 from the small width roll 24a acts on the guide surface as a fulcrum, thereby smoothly separating the material 21 from the small width roll 24a. Thereby, an embossed product having a good shape and peeled from the roll can be efficiently obtained.

[0020]

As described above, according to the method for feeding round dies of the present invention, a material is passed between a pair of rolls having a mold surface shape formed on at least one roll surface, and the rolling force is reduced. In the roll embossing method for transferring the mold surface shape to the surface of the material, a guide apron is arranged on the exit side of one of the rolls where the material is caught by the mold surface shape, and On one side of the leading edge of the insertion direction, a thinned portion that has been thinned in the thickness direction is formed,
Since the material is passed between the rolls so that the thinned portion faces the one roll, the material is peeled off from the roll without unnecessary deformation as the processing proceeds, and an embossed product having a good shape is obtained. There is an effect that can be obtained efficiently.

Further, according to the round mold feeding device of the present invention, a pair of rolls having a mold surface shape formed on at least one roll surface, and one of the rolls in which a material is involved by the mold surface shape And a guide apron disposed on the exit side of the guide apron, since the height position of the guide surface of the guide apron is shifted to the center side of the roll from the roll exit surface of the one roll, The processed material can be separated from the roll without requiring any special processing on the material.

Further, according to another round mold feeding device of the present invention, at least one roll has a pair of rolls having a mold surface shape formed on the surface of the roll, and among the rolls, One of the rolls in which the material is entangled by the shape of the mold surface is formed of a small-width roll whose rolling surface is smaller in width than the material. A guide apron having a guide surface is disposed at a height position deviated to the width direction end of the guide apron is extended in the roll entering side direction and positioned on the side of the small width roll. The processed material can be reliably separated from the roll without requiring processing.

[Brief description of the drawings]

FIG. 1 is a perspective view from below of a material used in a method according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a material is arranged in the processing apparatus.

FIG. 3 is a front view showing the deformation behavior of a material before and after processing.

FIG. 4 is a partial front view showing a modified example of the thinned portion of the material.

FIG. 5 is a perspective view showing a state in which a material is arranged in an apparatus according to another embodiment of the present invention.

FIG. 6 is a front view showing the deformation behavior of the material during processing.

FIG. 7 is a perspective view showing a state in which materials are arranged in an apparatus according to still another embodiment of the present invention.

FIG. 8 is a side view showing a state where a material is similarly arranged.

FIG. 9 is a perspective view showing the lower roll.

FIG. 10 is a perspective view showing a guide apron on the delivery side.

FIG. 11 is a front view showing the deformation behavior of the material during processing.

[Explanation of symbols]

 Reference Signs List 1 material 1a stepped portion 2 embossing machine 3 upper roll 4 lower roll 4a uneven surface 4b roll exit surface 5 guide apron 6 guide apron 7 material 7a taper surface 8 material 8a curved surface 11 material 16 guide apron 21 material 24 lower roll 24a small width roll 26 Guide apron 26a Both ends of guide apron width direction

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI B44B 5/00 B44B 5/00 B 5/02 5/02 (72) Inventor Satoru Masada 4th Chazu-cho, Muroran-shi, Hokkaido Japan, Ltd. Inside the steel mill

Claims (5)

[Claims] In a roll embossing process in which a material is passed between a pair of rolls having a mold surface shape formed on at least one roll surface and the mold surface shape is transferred to the material surface by a rolling force, the roll is embossed. A guide apron is arranged on the exit side of one of the rolls in which the material is caught by the mold surface shape, and on one side of the leading edge of the material in the insertion direction,
It is necessary to form a reduced thickness portion in the thickness direction so as not to receive the transfer of the mold surface shape, and pass the material between the rolls such that the reduced thickness portion faces the one roll side. Characteristic round mold feeding method 2. The method according to claim 1, wherein the thinned portion has a stepped shape with a thin end portion. 3. The method according to claim 1, wherein the thinned portion has a tapered shape that becomes thinner toward the front end of the material. 4. A pair of rolls having a mold surface shape formed on at least one roll surface, and a guide apron arranged on an outlet side of one of the rolls in which a material is involved by the mold surface shape. The guide apron, wherein a height position of a guide surface thereof is deviated to a center side of the roll from a roll exit surface of the one roll, wherein a round mold feeding device is provided. 5. A roll having a pair of rolls in which a mold surface shape is formed on at least one roll surface, and one of the rolls in which a material is involved by the mold surface shape is a rolled surface. Is formed of a small width roll having a width smaller than the material, and a guide apron having a guide surface at a height position deviated to the roll center side from the roll exit surface of the small width roll on the exit side of the small width roll. The guide apron has a widthwise end extending in the roll entry direction and is positioned on the side of the narrow roll.