JPH10137869A - Rolling mill for embosment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the shock and the noise during the rolling by providing a pair of rolls to be rotated, passing a base plate on which a die and a stacked stock having the length over the die are loaded through the rolls, and moving the base plate in the rolling direction. SOLUTION: The work side of a stock 9 is fitted to a recessed part 7a, and a lower end of a die 7 is fitted to a recessed part 6a of a base plate 6 is fitted and fixed thereto. When a hydraulic cylinder 8 is operated and the base plate 6 is advanced by a pressing plate 10, the base plate is bitten between an upper roll 2 and a lower roll 3 which are moved and rolled on guide rolls 4a, 4b, and the die 7 and the stock 9 are guided between the upper roll 2 and the lower roll 3 together with the base plate 6. Because the base plate 6 has sufficient length, the rear end is supported by the guide rolls 4a, 4b and smoothly bitten into the upper roll 2 and the lower roll 3 without inclination, the shock and noise during the rolling can be prevented, and the uneven shape of the die 7 is transferred to the stock 9 to achieve the embossing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Heretofore, as a method of forming a concavo-convex pattern on the surface of a raw material, a method using a press device is generally used, and a molding method using a roll is also known. In one of the roll forming methods, an uneven pattern is formed on the surface of a flat mold, and the flat mold and the material are overlapped with each other and passed between rolls to reduce the unevenness of the flat mold. Embossing to transfer to the surface is performed.
Usually, the rolling mill, the upper roll, material rolling by lower roll drive is usual, in the production of embossed products, between the upper roll, lower roll, place a mold so that the embossed surface is the upper surface, this The material for embossing is overlaid on the upper surface of the mold and passed between the rolls. By the way, when the material and the mold are passed between the rolls, the material is guided to a position immediately before the rolls by a carry-in table or the like, and is introduced between the rolls. Since the pinching force acts, the mold is inclined, and the lower surface and the rear end of the mold come into contact with the lower roll and the rolling mill member immediately before the lower roll, causing impact and noise, and with this, There is a problem that a roll or a mold is worn.

Conventionally, to solve the above problem, a soft sheet material is disposed between a mold and a roll, and the occurrence of the above-mentioned noise and impact is controlled by utilizing the crushing of the sheet material during rolling. Preventing. As the thin plate material, for example, an aluminum alloy plate having a thickness of about 0.5 mm (JIS A5000 series or the like)
Is used, and is replaced with a new sheet every time embossing is performed due to breakage caused by rolling.

[0004]

However, even with the conventional embossing method using a thin plate material, there is a problem that occurrence of impact or the like cannot be sufficiently prevented. In addition, there is also a problem that the manufacturing cost is inevitably increased because the thin plate material is used as a consumable. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an embossing rolling mill capable of effectively preventing impact and noise during rolling without requiring the use of a thin plate material, that is, a consumable. The purpose is to provide.

[0005]

Means for Solving the Problems In order to solve the above problems, a first invention of the embossing rolling mill of the present invention comprises a pair of rolls driven to rotate, a length exceeding a mold, and It is characterized in that it has a base plate on which the material and the mold in the set state are placed and passed between the rolls, and a base plate driving device for moving the base plate along the rolling direction. A second invention is characterized in that, in the first invention, the base plate driving device can move the base plate independently of the rotation of the roll.
A third invention is characterized in that in the first or second invention, the base plate driving device is provided with base plate support means for suppressing the inclination of the base plate during rolling.

In the present invention, as the material to be embossed, any material can be used as long as it can form an uneven shape on the surface by rolling, and various materials can be used. The concavo-convex shape is also arbitrary, and may be any shape that can be transferred to the material by the rolling force of the roll. The material of the mold is not particularly limited, but a high-strength material that can withstand rolling is desirable. Further, the material of the base plate is not particularly limited, but it is desirable to use a high-strength material such as tool steel or high-speed steel so as to withstand repeated use. This base plate must have a size that at least allows the mold to fit inside the base plate without protruding outside, and furthermore, rolling is performed so that a gap is not generated as much as possible between the mold and the lower roll. It is required to have a length in the direction that exceeds the mold. For example, when the base plate and the mold (+ material) are bitten into the upper and lower rolls, they become skewed, and the rear end of the base plate rubs the rolling mill member just before the lower roll to prevent impact and noise. It is desirable to make the length of the base plate suitable for the roll diameter (appropriate length).

Further, in addition to or together with the selection of the appropriate length, a base plate supporting means for suppressing the inclination of the base plate during rolling can be provided in the base plate driving device. Examples of the base plate supporting means include a stopper that hits the base plate at a predetermined position and prevents the base plate from further tilting and a holding device that holds the base plate and suppresses the tilting of the base plate.

In rolling, it is desirable that the base plate and the mold and the material do not deviate from each other. When the mold is mounted on the base plate, the mold is fitted into a recess formed in the base plate or the mold is fixed with a bracket. It is desirable to temporarily fix it, for example, by fixing it to a base plate. Also,
As the driving means for moving the base plate, those having various structures can be used. For example, it is made to move forward and backward along the rolling direction by the expansion and contraction operation of a rod of a cylinder such as a hydraulic pressure, the rotation of a chain, and the like, or is made to move forward and backward by rotating a plurality of small rolls on which a base plate is mounted by a motor or the like. be able to. According to these driving means, the movement of the base plate can be controlled independently of the rotation of the roll.

[0009]

According to the present invention, the material and the mold are moved together by the base plate driving device while being placed on the base plate, so that the three members maintain a good positional relationship and the rolling start position is maintained. , And the material and the mold are satisfactorily rolled by the pair of rolls. In this case, it is desirable that the base plate be positioned and moved along the roll entrance of the lower roll. At the time of the introduction, the base plate serves to guide the mold and the material between the rolls, and is passed between the rolls together with the mold and the material, so that the contact between the roll and the mold can be avoided. In addition, the mold can be moved independently of the roll, and the angle of engagement is set according to the roll diameter (base plate length).
Can be easily performed.

[0010] The base plate has a length exceeding the length of the die, and the impact generated when the die passes between the rolls while avoiding as much as possible impact contact with the lower roll or the rolling mill member immediately before the lower roll, Noise and the like can be reduced and prevented. Further, if the base plate is supported by the base plate supporting means provided in the base plate driving device and the inclination during rolling is prevented, the inclination can be prevented while the base plate is being moved. Can be rolled. It is desirable that the base plate support means supports the base plate before the base plate starts to incline, thereby preventing an impact from being generated between the base plate and the base plate support means at the start of the incline. In rolling, the pressing force from the lower roll is transmitted to the material and the mold via the base plate, while the pressing force is transmitted from the upper roll from above, so that the material and the mold are reduced, and the pattern of the mold is reduced. Is transferred to

If the movement of the base plate is controlled independently of the rotation of the roll, the rotation of the base plate can be arbitrarily slower, faster, or even synchronized with the rotation of the roll. Thus, the base plate, that is, the mold and the material can be passed between the rolls, and embossing can be performed under optimum conditions. This control can be performed by dynamically changing the speed at the time of rolling. However, the speed may be appropriately selected for each rolling according to the target material, the size of the mold, the material, and the like.
Further, if the mold is fixed to the base plate so as not to be displaced during rolling, the rolling position is fixed, and favorable rolling can be performed.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIGS. The embossing rolling mill 1 has an upper roll 2 and a lower roll 3 connected to a roll driving device via a transmission mechanism, and the entrance side of the lower roll 3 is aligned with the roll surface apex of the lower roll 3. And guide rolls 4a, 4b, 5a, 5b on the outlet side. These guide rolls 4a to 5b can be driven to rotate by a driving device (not shown). Guide rolls 4a, 4
A base plate 6 that is long in the rolling direction is movably mounted on the base plate b. The base plate 6 has a recess 6a in the center in the width direction, into which the lower end of the mold 7 is fitted. A hydraulic cylinder 8 having a cylinder rod 8a directed forward is fixed to the rear side of the rolling mill 1, and a rear end of the base plate 6 is attached to a pressing plate 10 provided at the tip of the cylinder rod 8a. The base plate 6 can be pushed forward at an arbitrary speed. In the above-described mold 7, a concave portion 7a into which the material 9 fits is formed on a mold surface that becomes an upper surface when the mold 7 is set on the base plate 6, and a concave and convex shape for transfer (not shown) is formed on the upper surface of the concave portion 7a. Are formed.

The operation of the rolling mill 1 will be described first.
The work surface of the material 9 is aligned with the upper surface of the concave portion 7a of the mold 7, the material 9 is fitted into the concave portion 7a, and the two are overlapped, and the lower end of the mold 7 is fitted into the concave portion 6a of the base plate 6 and fixed. In this state, the base plate 6 is at the rolling start position, and the mold 7 and the material 9 can be easily and accurately arranged at predetermined positions. Next, the hydraulic cylinder 8 is operated, the cylinder rod 8a is advanced, and the pressing plate 10
When the base plate 6 is pushed forward at an appropriate speed, the base plate 6 moves along the guide rolls 4a and 4b and is caught between the rotating upper roll 2 and lower roll 3. Note that, at this time, the width direction position correcting rollers 11 and 11 are in contact with both side surfaces of the base plate 6 to guide the base plate 6.

When the base plate 6 is moved, first, the tip of the base plate 6 is pushed between the upper roll 2 and the lower roll 3 along the roll entrance of the lower roll 3, and then the mold 7 and the material 9 are moved. Is guided between the rolls together with the base plate 6. At this time, the base plate 6
Has a sufficient length, its rear end is supported by the guide rolls 4a and 4b, and is smoothly caught between the upper roll 2 and the lower roll 3 without being inclined. Is effectively prevented.

Then, pressure from the lower roll 2 is applied to the mold 7 and the material 9 passed between the rolls 2 and 3 from below via the base plate 6, and pressure from the upper roll is directly applied from above. Then, the mold 7 and the material 9 are pressed down, and the uneven shape of the mold 7 is transferred to the material 9. At the time of the above rolling, the mold 7 and the base plate 6 are fitted and fixed in the recess 6a, and the mold 7 and the material 9 are fitted and fixed in the recess 7a. In addition, the rolling force is accurately and accurately transmitted to both, so that good working is performed.

During the rolling, it is possible to dynamically change the moving speed of the base plate 6 by controlling the operation of the hydraulic cylinder 8. You can slow down, speed up, or synchronize relatively. In addition, even when it is not dynamically changed, the optimum moving speed can be selected in advance according to the mold, the shape and the material of the material, and the like.

(Embodiment 2) Next, another embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the same configuration as the first embodiment is described.
The same reference numerals are given to omit or simplify the description.
The embossing rolling mill 20 has an upper roll 2 and a lower roll 3 similarly to the above-mentioned rolling mill 1, and has an entrance side and an exit side of the lower roll 3 aligned with the roll surface apex of the lower roll 3. Guide rolls 24... 24 and guide rolls 25. Guide roll 24
24, a rectangular parallelepiped base plate 26 whose width and length are slightly larger than the mold 7 is disposed. At the center of the surface of the base plate 26, a concave portion 26a into which the lower end of the mold 7 is fitted is formed. ing. Also, the recess 26a
A bracket housing groove 26b for housing the bracket 27 extends forward or rearward on both sides of the front and rear ends of the bracket.
Further, on both sides of the front and rear ends of the base plate 26, chain fittings 28 are fixed.

Further, chain sprockets 30, 30-33, 33 are arranged in pairs at both ends of the entry side and the exit side of the rolling mill, and at positions below the both ends so as to face each other in the width direction. The chain sprockets that are paired with each other are separated by the same width as the base plate 26 and are fixed to a common shaft member. A sprocket drive motor 31a is connected to the shaft of the sprocket 31 among these shafts. A chain 34 is gently stretched from the sprocket 30 on each side to the sprockets 31, 32, 33 on both sides of the sprocket described above. Attached to. An air cylinder 35 directed inward is disposed outside the chains 34 and 34 between the sprockets 30 and 31 and between the sprockets 32 and 33. Tension sprockets 36, 36 that can be pressed against the chains 34, 34 are attached.

Next, a hydraulic cylinder 8 having a cylinder rod 8a directed forward is fixed to the rear side of the rolling mill 20, and a base plate holding device 40 as base plate support means is fixed to the tip of the cylinder rod 8a. Have been. Specifically, a long piece-like holding device attachment 40a is fixed to the tip of the cylinder rod 8a, and the vertical rods 40b, 40b are arranged on both sides of the tip of the holding device attachment 40a, and the attachment 40a The central part is axially fixed through a long hole formed at the tip. Further, the vertical rods 40b, 4
The ends of the horizontal rods 40c, 40c are fixed to the upper and lower ends between 0b, and the base plate holder 41 is fixed to the distal ends of the horizontal rods 40c, 40c. The holding tool 41 has a U-shaped cross section with an open front end, and the inner surface 41a of the front end has a shape conforming to the shape of the rear end of the base plate 26 and the mold 7 and the material 9 housed therein. .

A guide rail 42 fixed to the rolling mill 20 is disposed below the holding device 40 toward the lower roll 3, and the lower portion of the guide block 43 is movable on the guide rail 42. Attached to. The guide block 43 has a through-hole formed in the upper part thereof in the front-rear direction, and the above-mentioned holding device fitting 40a penetrates the through-hole. Also, the guide block 43
The fixed pieces 43a, 4
3a is provided, and the fixing pieces 43a, 43a are located between the distal end portion of the holding device attachment 40a and the vertical rod 40b, and are fixed together with the attachment 40a and the vertical rod 40b.

The operation of the rolling mill 20 will be described. The mold 7 in which the raw material 9 is stacked is fitted into the concave portion 26a of the base plate 26, and the mold 7 is fixed by the bracket 27. A hemispherical portion 27a is provided at the tip of the bracket 27, and the hemispherical portion 27a fits into a hemispherical concave portion formed on the side surface of the mold 7, thereby further fixing the mold 7. Next, the tension sprockets 36, 36 are advanced by the air cylinder 35, tension is applied to the chains 30, 30, and the sprocket drive motor 31a is operated to rotate the chains 34, 34 clockwise in the drawing to retract the base plate 26. . The base plate 26 finally hits the block stopper 45 by the retreat and stops at the rolling start position. Here, the sprocket drive motor 31a is stopped, and the tension sprockets 36, 36 are retracted.

Next, when the cylinder rod 8a of the hydraulic cylinder 8 is advanced, the holding device mounting member 40a is
It moves forward relative to 1 by the length of the long hole, and its tip hits the holder 41 and pushes it forward. At this time, the guide block 43 also moves integrally while being pulled by the holding device fitting 40a.
2 moves forward while being guided. When the holder 41 is further advanced, the inner surface 41a of the tip thereof and the base plate 2
6, the mold 7, and the rear end of the material 9 are fitted. Further, when the cylinder rod 8a is advanced, the base plate 26
Is pushed forward while being supported by the holder 41, and accordingly, the chains 34, 34 gently wound around the sprockets 30 to 33 rotate. When the cylinder rod 8a is further advanced and the base plate 26 is pushed forward, the base plate 26 is caught between the upper roll 2 and the lower roll 3, which rotate while the mold 7 and the material 9 are stacked.
Then, the rotation of the rolls 2 and 3 causes the base plate 2 to rotate.
6 tends to incline so that the rear side descends, but since it is supported by the holder 41, a slight inclination is allowed by the rotation of the holding device 40 at each of the shaft stoppers, but any further inclination is allowed. Will be blocked. As the engagement between the rolls 2 and 3 progresses, the base plate 26 gradually becomes horizontal, and accordingly, the holding device 40 also rotates and moves at the shaft stopper. Due to the above, no gap is formed between the lower roll 3 and the mold 7, and the rear end does not come into contact with the rolling mill member.
Being trapped in between, the generation of impact and noise is effectively prevented.

Then, the base plates 26 are rolls 2, 3
The extension of the rod 8a by the hydraulic cylinder 8 stops as it gets caught between the rolls 2 and 3 because the extension of the rod 8a by the hydraulic cylinder 8 also stops, and the advance of the holding device 40 also stops. Mold 7 passed between rolls
An appropriate rolling force is applied to the material 9 and the material 9, and the uneven shape of the mold 7 is transferred to the material 9. At the time of the above-mentioned rolling, the mold 7 and the base plate 26 are fixed in the recesses 26a and fixed by the brackets 27, so that the respective displacements during the embossing are reliably prevented, and more favorable rolling is achieved. Is secured. Base plate 2
6 passes between the rolls 2 and 3, after the tension sprockets 36 and 36 advance, the sprocket drive motor 3
The chain 34 is further advanced by rotating the chains 34, 34 by 1a. Since the base plate 26 finally hits the stopper piece 46, the sprocket drive motor 31
a) and tension sprocket 3
6, 36 is retracted. After that, transport to other places and molds,
Perform necessary work such as removing materials.

[0024]

As described above, according to the embossing mill of the present invention, a pair of rolls driven to rotate,
It has a length exceeding the mold, and has a base plate that is placed between the rolls with the stacked material and mold placed thereon, and a base plate driving device that moves the base plate along the rolling direction. It is possible to effectively prevent impact and noise from being generated between the roll and the roll, and to perform embossing under optimum rolling conditions.

Further, if the base plate driving device can control the movement of the base plate independently of the rotation of the roll, embossing can be performed under optimum conditions by changing the movement speed of the base plate. Furthermore, if the base plate driving device is provided with a base plate supporting means for suppressing the inclination of the base plate during rolling, the transition of the inclination of the base plate during the movement of the base plate is reliably prevented, and the occurrence of impact and the like is more effectively prevented. , And rolling is also performed favorably.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view partially omitted.

FIG. 3 is a partially enlarged front view of the same.

FIG. 4 is a front view showing another embodiment.

FIG. 5 is a partially enlarged front view of a state in which a base plate, a mold, and a material are similarly overlapped.

FIG. 6 is a partially enlarged plan view showing a state in which a base plate, a mold, and a material are overlapped.

FIG. 7 is a partially enlarged front view of the base plate holder.

FIG. 8 is a partially enlarged plan view of the base plate holder.

FIG. 9 is a partially enlarged front view showing the state of the base plate when it is rolled down.

FIG. 10 is a partially enlarged plan view showing a base plate portion after the completion of rolling.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Embossing rolling mill 2 Upper roll 3 Lower roll 6 Base plate 6a Depression 7 Type 7a Depression 8 Hydraulic cylinder 9 Material 20 Embossing rolling mill 26 Base plate 26a Depression 27 Bracket 40 Base plate holding device 40a Holding device attaching tool 40b Vertical rod 40c Horizontal rod 41 Holder

Claims (3)

[Claims] 1. A pair of rolls driven in rotation (2, 3)
And a base plate (6) having a length exceeding the mold (7) and being passed between the rolls (2, 3) on which the stacked material (9) and the mold (7) are placed; A base plate driving device (8) for moving the base plate (6) in the rolling direction. 2. The embossing mill according to claim 1, wherein the base plate driving device (8) can control the movement of the base plate (6) independently of the rotation of the roll. 3. The base plate driving device (8) according to claim 1, further comprising a base plate supporting means (40) for suppressing the inclination of the base plate (26) during rolling. Embossing mill