JP2000027848A - Heat roll and heat roll press device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat roll further minimized in dispersion of surface temperature and a heat roll press device minimized in distortion by heat by providing a passage extending along the circumferential surface of a roll so as to carry a heat medium in the passage, and constituting the whole circumferential surface of the roll in bellows form. SOLUTION: A shaft part 101a has a supplying path 120 and discharge path for supplying a heat medium to a passage. The supplying path 120 and discharge path 130 are extended axially in the radial center part of a heat roller 100, and connected to linear passages through respective connecting paths 122, 132. The supplying path 120 is partially surrounded an inner pipe 125. The inner pipe 125 is extended through the discharge path 130. In the discharge path 130, the heat medium supplied from the outside is passed through the inner pipe 125, and the heat medium to be discharged is passed through the outside of the inner pipe 125. Since the heat medium is circulated along the roll surface in this way, the temperature of the roll outer surface can be uniformized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot roll press apparatus for applying heat and pressure to a workpiece such as a resin to form a plate, and a hot roll used in the hot roll press apparatus. .

FIG. 9 shows the structure of a conventional heat roll. The conventional heat roll 300 has a body portion 301 hollow. A steam injection tube 305 is inserted into the hollow portion 302 through a shaft portion 303 of the roll. By injecting steam from the steam injection pipe 305 into the hollow portion 302, the outer peripheral surface of the heat roll 300 is heated. The liquid in which the vapor is liquefied is pumped up by the siphon 306, and is discharged to the outside of the roll from a discharge pipe 307 provided inside the steam injection pipe.

[0003]

However, in such a conventional heat roll 300, it is difficult to maintain the temperature of the hollow portion 302 having a large volume at a constant temperature.
There has been a problem that the temperature of the outer peripheral surface of the heat roll tends to vary, and accurate press molding cannot be performed.

[0004] In addition, the conventional hot roll press has another problem that the heat of the hot roll is easily transmitted to the main body of the apparatus via the bearing portion, so that the main body of the apparatus tends to be distorted.

The present invention has been made in view of the above circumstances, and provides a heat roll having less variation in surface temperature.
It is an object of the present invention to provide a hot roll press device that does not have to worry about distortion due to heat.

[0006]

According to a first aspect of the present invention, there is provided a heat roll provided with a flow path near the outer peripheral surface of the roll and extending along the outer peripheral surface of the roll. Is configured so that the heat medium flows. The above flow path can be formed in a bellows shape over the entire outer peripheral surface of the roll. According to this configuration, the heat medium flows back along the roll surface, so that the temperature of the outer surface of the roll can be made uniform.

[0007] Specifically, the flow path includes a plurality of straight portions extending in the axial direction of the roll and a bent portion connecting the plurality of adjacent straight portions. The straight portion is formed so as to penetrate the body portion of the roll, and the bent portion is formed on a side flange (on both sides of the body portion).

According to another aspect of the present invention, there is provided a hot roll press apparatus configured to heat and press a workpiece between two hot rolls, wherein at least one of the hot rolls is rotatable. A member having a cooling water flow path is interposed between the bearing portion to be held and the apparatus main body.

With this configuration, it is possible to prevent the heat of the heat roll from being transmitted to the apparatus main body through the bearing. That is, distortion of the apparatus main body due to heat of the heat roll can be prevented. Further, when the bearing portion of one of the heat rolls is mounted on the movable frame so that the distance between the two rolls can be adjusted, deformation of the guide rail and the like can be prevented by providing the cooling water path in the movable frame. it can.

[0010]

Embodiments of the present invention will be described. FIG. 1 is a side sectional view of the heat roll 100 of the embodiment. FIG. 2 is a cross-sectional view of the heat roll 100 taken along line AA ′ in FIG. As shown in FIG. 1, the heat roll 100 includes a body portion 101 and shaft portions 101a, 10a on both sides thereof.
1b. The heat roll 100 is substantially solid, and a plurality of straight flow paths 111 extending in the roll axis direction are formed along the outer periphery of the body 101. Further, ring-shaped side flanges 102 and 103 are fixed to both side surfaces of the body 101, respectively.

The straight flow path 111 is formed as a through hole penetrating the body 101. Adjacent straight channel 111
Are connected by a U-shaped hole 112 formed in the side flange portions 102 and 103. Thus, as schematically shown in FIG. 3, the body 101 is formed in a bellows shape (in a zigzag manner).
Is formed around the outer peripheral surface.

As shown in FIG. 1, the shaft portion 101a is provided with a supply path 120 for supplying a heat medium (oil or the like) to the flow path 110 and a discharge path 130 for discharging the heat medium. . The supply path 120 and the discharge path 130
00 extends radially in the center in the radial direction,
2 and 132, the end of the straight channel 110 (11 in FIG. 1).
3, 114).

Note that a part of the supply passage 120 (shaft portion 101a)
To the middle of the trunk 101) are surrounded by an inner tube 125. The inner pipe 125 passes through the discharge path 130. That is, in the discharge path 130, the heat medium supplied from the outside passes through the inside of the inner tube 125, and the heat medium discharged passes through the outside of the inner tube 125.

As described above, the heat roll 10 of this embodiment
According to 0, since the heat medium circulates along the roll surface, the temperature of the roll outer surface can be made uniform.

Next, the rotary joint 150 for supplying a heat medium to the rotating heat roll 100 will be described. FIG. 4 is a side view showing the rotary joint 150 with a part cut away. Rotary joint 15
0 has a housing 155 and a rotating shaft 158.
The rotation shaft 158 is fixed to the shaft portion 101 a of the heat roll 100 and rotates together with the heat roll 100.

The housing 155 has two pairs of radial ball bearings 160 for receiving the rotating shaft 158 and the rotating shaft 15.
8 is provided with a floating ring 161 for sealing the sliding portion, and a bellows 162 and a gasket 163 for applying a sealing pressure to the floating ring 161.

The housing 155 has a discharge hole 152 for discharging the heat medium flowing out of the rotation shaft 158 to the outside.
And a guide hole 157 for guiding the heat medium from the end of the rotating shaft 158 to the outlet 152. This allows
The heating medium that has finished circulating through the flow path 110 of the heating roll 100 is:
It is discharged from the discharge port 152 through the rotating shaft 158 and the guide hole 157.

An elbow 156 is provided at the left end of the housing 155 in the figure. The above-described inner tube 125 of the heat roll 100 reaches the elbow 156 through the rotation shaft 158 and the guide hole 157, and the tip of the inner tube 125 is fixed to the elbow 156. That is, the inner tube 125 is a so-called fixed tube that does not rotate with the heat roll 100.
Thereby, the supply port 15 which is the end of the elbow section 156 is provided.
When the heat medium is supplied to the heat roller 1, the heat medium is guided to the flow channel 110 in the heat roll 100 via the inner pipe 125.

Next, a hot roll press apparatus 200 using the hot roll 100 of the embodiment will be described. FIG.
It is a front view of the hot roll press apparatus 200. 6 and 7 are a left side view and a right side view of the hot roll press device 200 as seen from the directions of arrows B and C. The hot roll press device 200 is provided with two above-mentioned hot rolls 100, and heats and presses a workpiece (not shown) between the two hot rolls 100,100.

The hot roll press device 200 includes a base 20
1 and a pair of right and left columns 20 erected on the base 201.
2, 202 (FIGS. 6 and 7). On the base 201, a pair of left and right support plates 205 having a water cooling function (described later) is provided. Support plate 20
5, 205, a pair of left and right bearings 210, 210 that rotatably support the lower heat roll 100 are attached. In addition, as shown in FIG.
Rotary joint 15 attached to 0,100
0,150 heat medium supply port 151 and discharge port 152
The flexible hoses H2 and H1 (FIG. 6) are connected to a heating medium heating device (not shown).

The hot roll press device 200 is configured to change the gap between the two hot rolls 100 by driving the upper hot roll 100 up and down. Therefore, as shown in FIG. 6 and FIG.
5,255 are attached respectively. Guide rail 25
The movable frames 250, 250 are slidably attached to the 5, 255 via a carriage 252. Then, bearings 220, 22 for supporting the upper heat roll 100 are provided on the front surfaces of the movable frames 250, 250.
0 is fixed.

The left and right movable frames 250, 250 are connected by a cross bar 251 extending in the left-right direction. Brackets 261 and 261 projecting forward are attached to the upper ends of the columns 202 and 202, and the movable frames 250 and 2 are attached to the brackets 261 and 261.
Lift cylinders 260 for driving the lift 50 up and down
Is supported. The lower ends of the plungers of the lifting cylinders 260 are fixed to the upper surface of the crossbar 251.

With this configuration, when the left and right lifting cylinders 260, 260 are driven, the left and right movable frames 250, 250 are simultaneously moved up and down, whereby the upper heat roll 100 is moved up and down.

As shown in FIG. 6, the upper and lower heat rolls 10
To adjust the distance between 0 and 100, the upper bearing 220
An interval adjusting mechanism 280 is provided between the lower bearing 210 and the lower bearing 210. The gap adjusting mechanism 280 includes a cotter 282 that slides along the upper surface of the bearing metal 212 of the lower bearing 210 and a bearing metal 2 of the upper bearing 220.
And a contact portion 284 attached to the lower surface of the cotter 22 and in contact with the cotter 282.

The cotter 282 is tapered so that the rear is higher than the front.
Is slid in the front-rear direction, the contact portion 284
The height abutting on 82 changes. Thereby, the bearing 2
The vertical position of 20 changes, and accordingly, the distance between the bearing 220 and the bearing 210 changes. Note that a dial 285 for moving the cotter 282 is attached to the front side of the bearing 210. Although not shown in FIG. 7, the gap adjusting mechanism 280 is also provided between the right bearing 220 and the right bearing 210.

With this configuration, the lifting cylinders 260, 260 are driven to drive the lifting frames 250, 2
After the dial 50 is raised and the dial 285 is rotated, the elevating cylinders 260 are driven again to lower the movable frames 250, so that the contact portions 284, 284
And the cotters 282 and 282 contact each other, and the upper and lower heat rolls 1
The interval between 00 and 100 is a desired interval.

The upper bearing 220 is provided with a dial gauge 286 to indicate the interval between the upper and lower heat rolls 100, 100. The tip of the needle of the dial gauge 286 is in contact with the top surface of the contacted member fixed to the bearing 210, and changes according to the interval between the bearings 210 and 220.

As shown in FIG. 5, the right bearing 210,
Motor units 230 and 240 for rotating the upper and lower heat rolls 100 and 100 are attached to the side surface of the 220. The motor unit 230 is provided with a servo motor 231. A pinion (not shown) attached to the main shaft of the servo motor 231
An attached intermediate gear (not shown) is engaged with the 0 shaft portion 101b. Similarly, in the motor unit 240, the servo motor 241 is configured to drive the upper heat roll 100 via a pinion / intermediate gear (not shown). Thus, the upper and lower heat rolls 100, 100 are respectively servo-driven.

Finally, the water cooling function provided on the support plates 205, 205 and the like will be described. FIG. 8 shows the support plate 205.
It is a perspective view of. A cooling water passage 206 for passing cooling water is formed inside the support plate 205. The cooling water flow path 206 extends in a bellows shape over the entire surface of the support plate 205,
The supporting plate 205 has an opening at the side end surface. One opening 20
A pipe (not shown) is connected to 7, and cooling water is sent from a cooling water supply system (not shown). The cooling water that has finished circulating through the cooling water flow path 206 is discharged to a discharge system (not shown) via a pipe (not shown) connected to the other opening 208.

The movable frame 250, 250 also has a support plate 2
A water cooling function similar to that of the water cooling function 05 is provided (the structure is the same as that shown in FIG. 8 and is not shown). As described above, the support plates 205, 20 having the water cooling function are provided between the bearing portions 210, 220 of the upper and lower heat rolls 100, 100 and the apparatus main body (the base 205, the columns 202, 203, the guide rails 255, etc.).
5 and the movable frames 250, 250 are interposed,
Even if the hot rolls 100, 100 are heated, the heat transmitted to the hot roll press device 200 is very small. This allows
It is possible to prevent distortion of the device main body due to heat.

The support plates 205 are also provided on the wall surfaces 232, 242 of the motor units 230, 240 on the side of the heat roll 100.
The same water cooling function is provided. As a result, the influence of the heat of the heat rolls 100, 100 is reduced by the servo motor 23.
1, 241 can be prevented. In addition,
In FIGS. 5, 6, and 7, members having a cooling function such as the support plate 205 are indicated by dotted hatching.

The hot roll press of this embodiment is provided with a cover 270 that covers the upper hot roll 100. The cover 270 is attached to the above-mentioned crossbar 251 attached to the movable frame 250 (the attachment 272).
Fixed).

[0033]

As described above, according to the heat roll of the present invention, since the heat medium flow path can be recirculated along the roll surface, the temperature of the roll outer surface can be made uniform. Become. Further, according to the hot roll press device of the present invention, by disposing a member having a water cooling function between the bearing portion of the hot roll and the device main body, distortion of the device main body due to heat of the hot roll can be prevented. .

[Brief description of the drawings]

FIG. 1 is a side view of a heat roll according to an embodiment.

FIG. 2 is a sectional view taken along line A-A 'of the heat roll of FIG.

FIG. 3 is a perspective view of the heat roll of FIG. 1;

FIG. 4 is a side view of a rotary joint.

FIG. 5 is a front view of the hot roll press device.

FIG. 6 is a left side view of the hot roll press device of FIG.

FIG. 7 is a right side view of the hot roll press device of FIG.

FIG. 8 is a perspective view of a support plate.

FIG. 9 is a side sectional view showing a conventional heat roll.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 heat roll 110 flow path 111 straight flow path 112 U-shaped hole 120 supply path 130 discharge path 150 rotary joint 200 hot roll press device 205 support plate 206 cooling water flow path 210, 220 bearing unit 230, 240 motor unit 250 movable frame

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) // B29L 7:00 (72) Inventor Yoshitomo Watanabe 123-4 Kuramitsu, Ekimaecho, Fukuyama-shi, Hiroshima Po Mishima 304 F term (reference) 3J103 AA02 AA23 AA24 AA37 AA49 AA73 AA83 BA09 CA63 DA01 FA01 GA02 GA24 4F204 FA06 FB02 FQ32

Claims (14)

[Claims] 1. A heat roll, wherein a flow path extending along the outer peripheral surface of the roll is provided near the outer peripheral surface of the roll, and a heat medium flows through the flow path. 2. The heat roll according to claim 1, wherein the flow path extends in a bellows shape over the entire outer peripheral surface of the roll. 3. The flow path according to claim 1, wherein the flow path includes a plurality of straight portions extending in an axial direction of the roll and a bent portion connecting the plurality of adjacent straight portions. Heat roll. 4. The roll has a body portion and side flanges on both sides of the body portion, the straight portion penetrates the body portion, and the bent portion is formed on the side flange. The heat roll according to any one of claims 1 to 3, wherein 5. The flow path has a first end and a second end, and a supply path for supplying a heat medium to the flow path is connected to the first end. The heat roll according to any one of claims 1 to 4, wherein a discharge path for discharging the heat medium from the flow path is connected to an end of the heat roll. 6. The hot roll according to claim 5, wherein the supply path and the discharge path pass through a radial center of the roll. 7. The roll is provided with a shaft, and the supply path and the discharge path penetrate the shaft.
The hot roll according to claim 6, wherein: 8. The hot roll according to claim 1, wherein the roll is a solid roll, and the flow path is a hole formed in the solid roll. 9. The heat-equipped heat roll according to claim 1, further comprising: two heat rolls, wherein the work is heated and pressurized between the two rolls. Roll press equipment. 10. The hot roll press device according to claim 9, wherein the interval between the two rolls can be adjusted. 11. A hot roll press apparatus comprising two hot rolls, and configured to heat and press a workpiece between the two hot rolls, wherein at least one of the hot rolls is rotatably held. A member having a cooling water flow path is interposed between the bearing portion and the apparatus main body. 12. In order to make it possible to adjust the interval between the two heat rolls, a bearing portion of one of the heat rolls is mounted on a movable frame, and a cooling water path is also provided on the movable frame. The hot roll press device according to claim 11, wherein 13. A housing accommodating a motor for rotating and driving at least one of the heat rolls, wherein a cooling water passage is provided on a wall near the heat roll. Item 13. The hot roll press device according to item 11 or 12. 14. A hot roll press device having at least one hot roll and configured to heat and press a workpiece, between a bearing portion for rotatably holding the hot roll and a device body. And a support member having a cooling water flow path interposed therebetween.