JP3257101B2 - 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.

[0002]

2. Description of the Related Art In a calender for rolling and molding a resin, rubber or the like, a rolling load acting on a calender roll is detected and used for monitoring rolling conditions.

Conventionally, as means for detecting the rolling load, a load meter or the like is provided between the axle box of the calender roll and the frame.

[0004]

However, when the load cell is provided between the axle box of the calender roll and the frame, there is a problem that the rolling load cannot be detected accurately due to the effect of the frictional force acting between the two. there were.

In view of the above circumstances, the present invention has been devised to provide a calender capable of accurately detecting a rolling load by eliminating the influence of friction between the axle box and the frame. .

[0006]

SUMMARY OF THE INVENTION The present invention provides a calender roll axle box whose load is detected by a load detecting means, which is movably held on a frame in a direction to increase or decrease an inter-axis distance. In a calender provided with shaft position adjusting means for moving the axle box in the direction of increasing or decreasing the inter-axis distance between the axle box, a bearing for reducing friction between the axle box and the frame is provided between the axle box and the frame, The load detecting means is provided between a receiving member attached to the axle box on the side opposite to the shaft position adjusting means and a concave portion of a frame accommodating the receiving member, and the bearing is provided between the receiving member and the concave portion. The present invention relates to a calendar provided in the calendar.

[0007]

The bearing is interposed between the calender roll axle box whose load is detected by the load detecting means and the calender frame, and the load detecting means is mounted on the axle box on the side opposite to the shaft position adjusting means. A bearing is provided between the member and the recess of the frame that houses the receiving member, and a bearing for reducing friction is provided between the receiving member and the recess. The effect of friction when moving in the direction of increasing or decreasing the distance is eliminated, and the accuracy of control of the roll gap is improved.

[0008]

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

First, a first embodiment of the present invention will be described with reference to FIGS. This apparatus comprises load meters 11, 12, 1 serving as load detecting means for detecting each roll load of the calendar.
3 and shaft position adjusting means 14 and 15 for increasing and decreasing the distance between the roll axes.

The calendar according to the present embodiment has an S-shape (inclined Z) having four calender rolls 18, 19, 20, 21.
The raw material is supplied to a bank formed between the first roll 18 and the second roll 19 and between the third roll 20 and the fourth roll 21 and the second roll 19
Fabric (steel, etc.) between the third roll 20
Is loaded, and each is rotated in the direction of the arrow in the drawing to perform double coating, thereby forming a sheet-like rubber plate for a tire or a belt. Each of the calender rolls 18, 19, 20, 21 is provided with a shaft box 2 provided at a shaft end.
4, 25, 26, 27, and is supported by a frame 28. In the center of the frame 28, axle boxes 24, 25, 2
An opening 29 is formed in an appropriate shape for accommodating the shafts 6 and 27 movably in a direction in which the inter-axis distance is changed.

The load cell 12 includes a shaft box 26 of the third roll 20.
, And detects a rolling load between the second roll 19 and the third roll 20.
13 is attached to each of the axle boxes 25 and 26 on the side not connected to the shaft position adjusting means 14 and 15, and the rolling load between the first roll 18 and the second roll 19;
The rolling loads between the 0th and fourth rolls 21 are respectively detected.

The shaft position adjusting means 14 and 15 are provided on the first roll 18 and the fourth roll 21 respectively, and are connected to a rotation motor 30 attached to the side end of the frame 28 and to an output shaft of the rotation motor 30. It is mainly constituted by a screw rod 31 appropriately connected in the orthogonal direction and a connecting member 32 attached to the tip of the screw rod 31 and connected to the axle boxes 24 and 27. The screw rod 31 extends in the roll radial direction (the direction of movement between the shafts), and is screwed to a nut 33 attached to the frame 28. That is, the transmission of the rotational force about the axis causes the guide 34 to reciprocate along the opening.

As shown in FIG. 2, the calender roll 1 is provided with a sliding surface 41 for slidably holding the axle boxes 25, 26 in a direction 40 perpendicular to the direction in which the distance between the axes is changed.
Receiving member 42 attached to axle boxes 25, 26 of 9, 20
And a concave portion 43 formed in the opening portion 29 of the frame 28, a bearing 39 such as a rolling bearing is provided so as to be movable in a direction in which the distance between the axes of the calender rolls 18, 19 and 20, 21 is increased or decreased.

Next, the operation will be described.

The calender rolls 18, 19, 20, 21 are formed by a change in the amount of the bank due to a change in the rubber supply amount.
The rolling force fluctuates during the interval. Correspondingly, each of the calender rolls 18, 1 is controlled by the load cells 11, 12, 13.
A change value of the roll load between 9, 20, and 21 is detected, and the rotation motor 30 is rotated based on the detected value. Then, the rotation motor 30 is operated to transmit the rotation force to the screw rod 31, the axle boxes 24, 27 are moved in the inter-axis direction, the roll shaft position is corrected, and the roll gap is maintained constant.

At this time, the axle boxes 25 and 26 of the calender rolls 19 and 20 are provided with sliding surfaces 41 for holding the axle boxes 25 and 26 slidably in a direction 40 perpendicular to the direction in which the distance between the axes is changed. The attached receiving member 42 and the frame 2
Since a bearing 39 such as a rolling bearing is interposed between the calender rolls 18, 19 and 20, 21 in a direction to increase or decrease the distance between the shafts, the bearing 39 is interposed between the concave portion 43 formed in the opening 29 of FIG. The receiving member 42 and the concave portion 4 are formed by the bearing 39.
3 eliminates the influence of friction, and the detection accuracy of the load cells 11 and 13 is improved.

FIG. 3 shows a second embodiment of the present invention, in which the first embodiment is applied to an inverted L-shaped calendar, and has the same structure as that of the first embodiment. As a result, the same operation and effect can be obtained.

Further, the structure of the present invention can utilize a shaft position adjusting mechanism provided in a conventional calendar, and is practical and extremely versatile.

In each of the embodiments, only one side of the roll is shown. However, by performing the operations separately on the left and right axle boxes, it is possible to detect a deviation in the distribution of the rolling force applied in the width direction of the roll. .

In the above embodiment, the shaft position adjusting mechanism is performed by the rotary motor and the screw. However, the shaft position adjusting mechanism may be constituted by a hydraulic cylinder and a hydraulic control valve (including a servo valve) instead. Included in the scope of the invention.

Further, in the present embodiment, the case where the present invention is applied to an S-shaped or inverted L-shaped calendar having four rolls is shown. The present invention can be applied to a calendar of an L type, a Z type or the like.

[0022]

In summary, according to the present invention, an excellent effect that the accuracy of detecting the rolling load can be improved without the influence of the friction between the axle box and the frame.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a side view showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Load cell (load detection means) 12 Load cell (load detection means) 13 Load cell (load detection means) 14 Axis position adjustment means 15 Axis position adjustment means 18 Calendar roll 19 Calendar roll 20 Calendar roll 21 Calendar roll 24 Shaft box 25 Axle box 26 axle box 27 axle box 28 frame 39 bearing 42 receiving member 43 recess

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Eiichi Harada 1st Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishikawajima-Harima Heavy Industries Co., Ltd. No. 1 Haramachi Ishikawajima-Harima Heavy Industries, Ltd. Yokohama No. 2 Factory (56) References JP-A-3-292114 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 43/46 B29C 43/24 B29C 43/58

Claims (1)

(57) [Claims] An axle box of a calender roll, the load of which is detected by a load detection means, is movably held on a frame in a direction to increase or decrease an inter-axis distance, and an axle box is provided between the frame and the axle box. In a calender provided with shaft position adjusting means for moving the shaft in the direction of increasing or decreasing the inter-axis distance, a bearing for reducing friction between the axle box and the frame is interposed between the axle box and the frame, and the load detecting means The receiving member is provided between a receiving member attached to the axle box on the position adjusting means side and a concave portion of a frame accommodating the receiving member, and the bearing is provided between the receiving member and the concave portion. Calendar to do.