JP3227897B2 - calendar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a calendar for forming a sheet-like molded product from a polymer material such as rubber or plastic.

[0002]

2. Description of the Related Art As an example of a calendar for polymer such as rubber or plastic, as shown in FIG. 4A, a first roll 1, a second roll 2, a third roll 3, a fourth roll 4, and a fourth roll 4 are shown. The five rolls 5 are combined in parallel to form an inverted L-shaped arrangement, and the first roll 1 is horizontally moved to the second, third,
The fifth rolls 2, 3, and 5 can be moved in the vertical direction, and the fourth roll 4 is fixed in position and can be crossed in a horizontal plane. , Between the second and third rolls 2 and 3, between the third and fourth rolls 3 and 4, and between the fourth and fifth rolls 4 and 5, are continuously rolled to form a molded product 7. Then, the molded article 7 is drawn through a space between take-off rolls arranged in multiple rows downstream of the fifth roll 5 or, as shown in FIG. 4 (b), FIG. The model shown in the figure is upside down with an L-shaped arrangement,
As shown in FIG. 4C, each of the rolls 1, 2, 3, 4, 5
, The first roll 1 and the third roll 3 can be moved in the horizontal direction, the second roll 2 can be moved in the vertical direction, the fourth roll 4 is fixed in position, and the fifth roll 5 is moved up and down. One that can move in the direction and can cross in a horizontal plane is already known (Japanese Patent Publication No. 2-36370). B ₁ , B ₂ , B ₃ , and B ₄ indicate banks between the rolls.

[0003]

However, in the case of a calendar of the type shown in FIGS. 4A and 4B, the second to fifth rolls 2, 3, 4, and 5 are vertically aligned in a straight line. Since they are arranged, the third roll 3 and the fixed fourth roll 4
When adjusting the gap between the second roll 2 and the third roll 3, the second roll 2 must be moved simultaneously with the third roll 3. Must move only the second roll 2 alone. Therefore, as a moving mechanism of the second and third rolls 2 and 3, for example, FIG. 5 of JP-B-61-41727 is used. A complicated structure and operation must be used, and there is a problem that the whole structure is expensive.

On the other hand, in a calender of the type shown in FIG. 4C, when the rolled molded product 7 is along the surface of the fourth roll 4 and then peeled off from the fourth roll 4 as shown by a solid line. the, the peripheral speed of the fifth roll 5 must be slower than the fourth roll 4, therefore, becomes the direction of rotation is the same direction of the bank B ₃ and B _4, transformation of the material of the inside bank B ₄ (softening In addition, there is a drawback that the effect is not obtained due to the reversal of the reversal of the material, and the peripheral speed of the fifth roll 5 is made higher than that of the fourth roll 4 as shown by the broken line in the molded product 7. When the fifth roll 5 is crossed in the horizontal direction in order to correct an error in which the center portion is thicker than both end portions of the molded product 7 due to the deflection of the roll due to the rolling force, in the case where the fifth roll 5 is stripped after being conformed to. And between the take-off roll and the fifth roll 5 There is a drawback that the parallelism is lost and a thickness error occurs in the rolled molded product 7, and further, in a model in which the fifth roll 5 is crossed, the distance between the fifth roll 5 and the take-off roll is long. In addition, there is a problem that neck-in easily occurs in the molded product 7.

Accordingly, the present invention provides a calendar in which five rolls are arranged in reverse L or L, so that the gap between the third and fourth rolls can be easily adjusted by the single movement of the third roll. Therefore, it is possible to eliminate the need for a complicated structure and a moving mechanism for operation, and to improve the molding accuracy of the molded product by allowing the take-off roll to be arranged in parallel and close to the roll from which the molded product is peeled off. It is assumed that.

[0006]

According to the present invention, in order to solve the above problems, a second roll is arranged beside a first roll,
In a calendar in which a third roll, a fourth roll, and a fifth roll are sequentially arranged below the second roll, each roll is arranged in an inverted L-shape, and the fourth roll has a fixed position.
The axis position of the second roll is shifted laterally from a straight line connecting the axis centers of the third roll, the fourth roll, and the fifth roll,
Further, the third roll is arranged so as to be displaceable in an oblique vertical direction.

Further, the arrangement of the rolls may be reversed so that the rolls are arranged in an L-shape.

[0008]

Since the second roll is displaced from the vertical straight line passing through the axis of the third roll, the third roll can move obliquely up and down. Therefore,
When adjusting the gap between the third roll and the fourth roll, only the third roll needs to be moved alone.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. Similar to the calendar shown in FIG. 4A, a first roll 1 and a second roll 2 are arranged in parallel in a horizontal direction. A third roll 3, a fourth roll 4, and a fifth roll 5 are sequentially arranged in parallel in the vertical direction below the second roll 2, and the fourth roll 4 can be crossed horizontally and fixed in position. In the configuration having a character-shaped roll arrangement, the first roll 1
Straight line l ₁ connecting the axis O ₁ of the second roll and the axis O ₂ of the second roll 2.
When, the axis O ₃ of the axis O ₂ and the third roll 3 of the second roll 2
While keeping the angle between the straight line l ₂ connecting
The straight line l ₂ is the axis O ₃ of the third roll 3 4, the axis O of the axis O _4, O ₅ with respect to the vertical straight line l ₃ connecting the third roll 3 of the fifth roll 4 and 5 The first roll 1 is displaced together with the second roll 2 so as to be inclined to the side away from the first roll 1 around the center ₃ , that is, the axis O ₂ of the second roll is shifted from the straight line l ₃ . The first roll 1 is arranged obliquely laterally of the second roll 2 by being shifted laterally, and the first roll 1 can be moved obliquely up and down (in the direction of arrow a) along the straight line l _1. The third roll 3 can be moved in an oblique vertical direction (the direction of arrow b) along the straight line l ₂ , and
₂ is movable in the perpendicular oblique vertical direction (direction of an arrow c), the fifth roll 5 and movable in the vertical direction along the straight line l ₃ (the direction of arrow d), the gap between the rolls, each roll 1, Adjustment is made by moving 2, 3, and 5 independently. In addition, 8 indicates a take-off roll.

With the above configuration, when adjusting the gap between the rolls, the first roll 1, the second roll 2, the third roll 3, and the fifth roll 5 are respectively indicated by arrows a,
It can be performed by independently moving in the b, c, and d directions.

In the above, except for the case where the gap between the third roll 3 and the fourth roll 4 is adjusted, substantially the same operation as the conventional calendar shown in FIG. The gap between the third roll 4 and the fourth roll 4 can be adjusted more easily than in the case of the above-mentioned conventional type. That is, the second roll 2, a straight line l ₂ connecting the axis O ₂ of the second roll 2 the axis O ₃ of the third roll 3, the straight line l in the vertical direction passing through the axis O ₃ of the third roll 3 third around the axis O ₃ of the roll 3 with respect to ₃ arranged so as to be inclined position on the side away from the first roll 1, yet the first axis O ₁ and the second axis of the roll 2 rolls 1 Straight line l ₁ connecting O ₂
Since the first roll 1 is disposed at a position perpendicular to the straight line l ₂ , the third roll 3 can be moved in a direction approaching / separating from the fourth roll 4. Therefore, as in the above-mentioned conventional type, the second roll 2 and the third roll 3
It is possible to eliminate the need for a moving mechanism having a complicated structure for moving the rollers simultaneously or independently, and to adjust the gap between the rolls 3 and 4 with a simple operation. or,
In the above description, since the second roll 2 and the third roll 3 come into contact with the third roll 4 and the fourth roll 4 from diagonal directions, the load applied to the third roll 3 and the fourth roll 4 is a combined force. As it becomes smaller than the conventional model,
There is an advantage that the deflection of the roll is reduced.

Further, in the present invention, the rolled molded article 7
Is peeled off from the surface of the fifth roll 5 and pulled out by the take-off roll 8 as shown by a solid line or a two-dot chain line, so that the fourth roll 4 is crossed in a horizontal plane to correct the thickness of the molded product 7. However, since the parallelism between the fifth roll 5 and the take-off roll 8 does not change, the take-off roll 8 can be arranged close to the fifth roll 5 as illustrated. Therefore, there is no possibility that a neck-in easily occurs in the drawn-out molded article 7.

FIG. 2 shows another embodiment of the present invention. In a configuration similar to that of the embodiment of FIG. 1, the first roll 1 is connected to the shaft center O ₁ of the first roll 1. The two rolls 2 are arranged so that a straight line l ₁ connecting the axis O ₂ thereof is horizontal, that is, the first roll 1 is arranged right beside the second roll 2, and the first roll 1 is placed in a horizontal straight line. horizontal direction along the l ₁ is obtained by movable into (arrow a 'direction).

In the embodiment shown in FIG. 2, since the third roll 3 can be moved alone, the same operation and effect as those in the embodiment shown in FIG. 1 can be obtained.

FIGS. 3A and 3B show still another embodiment of the present invention corresponding to the embodiments of FIGS. 1 and 2, respectively. FIG. FIG. 3 (b) shows a case where the roll arrangement is reversed and the arrangement is L-shaped.
2 shows the case where the roll arrangement in FIG. 2 is inverted and the arrangement is L-shaped.

In the embodiment shown in FIGS. 3A and 3B, the same operation and effect as the above embodiment can be obtained.

It should be noted that the present invention is not limited to only the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the present invention.

[0019]

As described above, according to the calendar of the present invention, the second roll is arranged beside the first roll, and the third, fourth, and fifth rolls are arranged above or below the second roll. In the configuration in which the L-shaped or inverted L-shaped rolls are arranged and the fourth roll is fixed in position, the second roll is shifted together with the first roll from a vertical straight line passing through the axis of the third roll. The gap between the third roll and the fourth roll can be adjusted by moving the third roll obliquely up and down with respect to the fourth roll because of the arrangement, whereby the complicated structure as in the conventional type can be adjusted. In addition, the moving mechanism that required complicated operations can be omitted, and the molded product is peeled off from the fifth roll and pulled out, so that the fifth roll can be shifted in the horizontal plane. Takeoffro against roll Since the parallelism of the rolls does not collapse, the take-off roll can be arranged in close proximity to the fifth roll, thereby exhibiting excellent effects such as not easily causing neck-in in the molded product. I do.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of a calendar of the present invention.

FIG. 2 is a schematic view of another embodiment of the present invention.

FIG. 3 is a view showing still another embodiment of the present invention.
3 is a schematic diagram corresponding to the embodiment of FIG. 1 and FIG. 2B is a schematic diagram corresponding to the embodiment of FIG.

FIG. 4 shows a conventional calendar, in which (a) and (b)
(C) is a schematic diagram showing different models.

[Explanation of symbols]

1 first roll 2 second roll 3 the third roll 4 fourth roll 5 fifth roll _{O 2, O 3, O 4} , O 5 axial l ₃ linear

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-128215 (JP, A) JP-A-61-41727 (JP, A) JP-A-52-43862 (JP, A) JP-A-62 7519 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 43/22-43/24 B29C 43/44-43/46

Claims (2)

(57) [Claims] 1. A second roll is arranged beside a first roll,
In a calendar in which a third roll, a fourth roll, and a fifth roll are sequentially arranged below the second roll, each roll is arranged in an inverted L-shape, and the fourth roll has a fixed position.
The axis position of the second roll is shifted laterally from a straight line connecting the axis centers of the third roll, the fourth roll, and the fifth roll,
A calendar, wherein the third roll is disposed so as to be displaceable in an oblique vertical direction. 2. The calendar according to claim 1, wherein each roll is arranged upside down to form an L-shaped arrangement.