JP4071358B2 - Induction heating roll drive device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a device for rotationally driving a pair of induction heating rolls used in a nip form in a laminator, a coater, or the like.
[0002]
[Prior art]
In a laminator process or the like, a pair of nip-type heating rolls is used to heat and pressurize the film. As the heat generating roll, a type heated by supplying hot water, a heat medium, steam, or the like, an electric heating type, a type using induction heat generation, etc. are used. In particular, induction heat generation using induction heat generation is used. Rolls have come to be used frequently because they have advantages such as quick heating and easy temperature control. By the way, when the induction heating roll is energized and heated in a non-rotating state, there is a problem that non-uniform shape deformation occurs due to heat generated by the roll itself. Therefore, in order to avoid this, it is necessary to rotate the induction heating roll not only during normal use but also at the time of temperature rise and fall at the start and end of use. Also, when using a pair of induction heating rolls in the nip form, one induction heating roll can be moved so that the nip can be released when necessary, such as when the film temporarily stops running. The nip may be released in the energized state at the time of temperature increase, temperature decrease, etc., but it is necessary to rotate the pair of induction heating rolls also in that case. For this reason, conventionally, a driving device is connected to each of the pair of induction heating rolls to rotate, and the driving device connected to the moving induction heating roll moves together with the induction heating roll.
[0003]
[Problems to be solved by the invention]
However, when the driving device is connected to each of the pair of induction heating rolls and one of the driving devices is moved together with the induction heating roll, not only the structure becomes complicated, but also a large space is required and the cost is high. There was a problem of becoming.
[0004]
The present invention is intended to solve such problems, and is capable of rotating a pair of induction heat generating rolls that can be released from the nip, respectively, with a simple structure, space saving, and cost saving. It is an object of the present invention to provide a simple induction heating roll driving device.
[0005]
[Means for Solving the Problems]
In order to solve the above-described conventional problems, the present invention has a configuration in which one induction heating roll, that is, a reference-side induction heating roll, is rotated by a driving means, and the other induction heating roll, that is, a nip. The side induction heat generating roll is allowed to rotate, and a transmission shaft that is rotationally driven by the driving means is provided at a predetermined position. When the nip side induction heat generating roll is moved away from the reference side induction heat generating roll and moved back to the predetermined position, the nip The side induction heat generating roll is configured to be drivingly connected to the transmission shaft via a rotation transmission means. With this configuration, the present invention rotates the reference-side induction heating roll while the nip-side induction heating roll is pressed against the reference-side induction heating roll, and the rotation is transmitted to the nip-side induction heating roll. , The rotation is transmitted from the transmission shaft to the nip side induction heating roll, so that the reference side induction heating roll and the nip side induction heating roll can always be driven to rotate by a single driving means.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention includes a reference-side induction heating roll provided at a fixed position, and a nip-side induction heating roll provided so as to be movable to and away from a position where the reference induction heating roll is nipped and at a position away from the reference induction heating roll. An apparatus for rotationally driving, the driving means for rotationally driving the reference-side induction heating roll, and the nip-side induction when the nip-side induction heating roll is moved back to a predetermined position away from the reference-side induction heating roll. A transmission shaft that is disposed at a position where it can be connected to the heat generating roll, and is driven to rotate by the driving means, and when the nip side induction heat generating roll is retracted to the predetermined position, the nip side induction heat generating roll is driven to the transmission shaft. It has the rotation transmission means to connect, It is characterized by the above-mentioned. According to this configuration, the nip-side induction heating roll is driven to rotate by the reference-side induction heating roll when it is pressed against the reference-side induction heating roll, and is rotated by the transmission shaft via the rotation transmission means when it is moved backward. For this reason, by rotating the reference side induction heat generating roll and the transmission shaft by the driving means, both the reference side induction heat generating roll and the nip side induction heat generating roll can always be rotated.
[0007]
Here, as the rotation transmission means for transmitting the rotation of the transmission shaft to the nip side induction heating roll, a roll side rotation transmission wheel (for example, a roll, attached to the nip side induction heating roll so as to rotate integrally with the nip side induction heating roll). And a shaft-side rotation transmission wheel (for example, a roll, a gear, etc.) attached so as to rotate integrally with the transmission shaft, and when the nip-side induction heating roll is retracted to a predetermined position, the roll It is preferable that the outer periphery of the side rotation transmission wheel be in contact with the outer periphery of the shaft side rotation transmission wheel to transmit the rotation. With this configuration, rotation transmission can be performed using a rotation transmission wheel with a simple structure, and the nip side induction heating roll is simply reciprocated linearly to enter a rotation transmission state with respect to the transmission shaft. Can be separated.
[0008]
When the two sets of the reference side induction heating roll and the nip side induction heating roll are rotationally driven using a common driving means, the driving means is a common drive that serves as a driving source for both the reference side induction heating rolls. A first drive transmission device disposed on a first reference surface perpendicular to the drive shaft and transmitting the rotation of the drive shaft to one reference-side induction heating roll; and a second parallel to the first reference surface A second drive transmission device disposed on a reference surface and transmitting the rotation of the drive shaft to the other reference-side induction heating roll; and a second drive transmission device disposed on the second reference surface and configured to rotate the one reference-side induction heating roll. A third drive transmission device that transmits to a transmission shaft combined therewith, and a fourth drive transmission device that is disposed on the first reference surface and transmits the rotation of the other reference-side induction heating roll to the transmission shaft combined therewith. It is preferable to do. With this configuration, the first, second, third, and fourth drive transmission devices can be arranged in the two reference planes, and space can be saved. Specific examples of the first, second, third, and fourth drive transmission devices used here include a combination of a pulley and a belt, a combination of a chain wheel and a chain, a gear train, and the like. .
[0009]
The induction heating roll driving device of the present invention can be used in any process or apparatus using a nip type induction heating roll, and can be used, for example, in a lamination process, a coating process, a film drying process, and the like.
[0010]
【Example】
Hereinafter, preferred embodiments of the present invention shown in the drawings will be described.
FIG. 1 is a schematic side view showing a roll arrangement of a laminator incorporating an induction heating roll driving device according to an embodiment of the present invention, wherein 1a and 1b are films to be bonded to each other, 1 is a film after being bonded, Reference numerals 3 denote nip devices for pressurizing and heating the stacked films 1a and 1b, respectively, and are provided with reference-side induction heating rolls 5A and 5B and nip-side induction heating rolls 6A and 6B, respectively. 8 is a winding device which winds up the film 1 after bonding.
[0011]
2 is a schematic side view showing a portion of the embodiment of FIG. 1 where the induction heating roll driving device is arranged, FIG. 3 is a schematic sectional view taken along the line AA of FIG. 2, and FIG. It is a schematic plan view shown. 2 to 4, 11 is a side frame, and 12 is a bearing that rotatably holds the reference-side induction heating rolls 5A and 5B. The bearing 12 is fixed to the side frame 11, and therefore the reference-side induction heating rolls 5A and 5B are held at fixed positions. On the other hand, the nip-side induction heat generating rolls 6A and 6B are rotatably held by a bearing 14, and the bearing 14 is movably attached to a guide 15 provided perpendicular to the side frame 11 and connected to a detachable cylinder 16. Has been. Thus, the nip induction heating rolls 6A and 6B are pressed against the reference side induction heating roll 5 by the detachable cylinder 16 with a predetermined pressing force, and a retreat position (downward from the reference side induction heating rolls 5A and 5B ( The position can be moved to a position indicated by a two-dot chain line 6 in FIG.
[0012]
20 is an induction heating roll driving device for rotationally driving the induction heating rolls 5A, 5B, 6A, 6B of the two sets of nip devices 2, 3, and an auxiliary frame 21 attached in parallel to the side frame 11, The auxiliary frame 21 is rotatably held and connected to the reference side induction heat generating rolls 5A and 5B. The reference side induction heat generating rolls 5A and 5B are rotationally driven via the connection shafts 22A and 22B. Drive means 23 for transmission, transmission shafts 24A, 24B, etc., rotatably supported by the auxiliary frame 21.
[0013]
The driving means 21 is connected to a motor (not shown) and serves as a common driving source for the two nip devices 2 and 3, a pulley 27 attached to the driving shaft 26, and one reference side A pulley 28 attached to a connecting shaft 22A connected to the induction heat generating roll 5A, and a belt 29 hung on both pulleys 27, 28, are provided, and the rotation of the drive shaft 26 is transmitted to one reference side induction heat generating roll 5A. A drive transmission device, a pulley 31 attached to the drive shaft 26, a pulley 32 attached to a connecting shaft 22B connected to the other reference side induction heating roll 5B, and a belt 33 hung on both pulleys 31, 32 And a second drive transmission device that transmits the rotation of the drive shaft 26 to the other reference-side induction heat generating roll 5B. Here, the pulleys 27 and 31 are attached at different positions in the axial direction of the same drive shaft 26, so that the first drive transmission device composed of the pulleys 27 and 28 and the belt 29 has a first angle perpendicular to the drive shaft 26. The second drive transmission device, which is arranged on one reference plane P-P and includes the pulleys 31, 32 and the belt 33, is arranged on a second reference plane Q-Q parallel to the first reference plane PP.
[0014]
The driving means 21 further includes a pulley 35 attached to the connecting shaft 22A connected to one reference-side induction heating roll 5A, a pulley 36 attached to the transmission shaft 24A, and a belt 37 hung on both pulleys 35, 36. A third drive transmission means for transmitting the rotation of one reference side induction heating roll 5A to the transmission shaft 24A combined therewith, and a pulley 38 attached to a connecting shaft 22B connected to the other reference side induction heating roll 5B, A pulley 39 attached to the transmission shaft 24B, a belt 40 hung on both pulleys 38, 39, and a fourth drive transmission device for transmitting the rotation of the other reference side induction heating roll 5B to the transmission shaft 24B assembled therewith are also provided. ing. The third drive transmission device including the pulleys 35 and 36 and the belt 37 is disposed on the second reference plane QQ, and the fourth drive transmission device including the pulleys 38 and 39 and the belt 40 is the first reference plane P. -P. Thus, by arranging the first, second, third and fourth drive transmission devices on the two reference planes PP and QQ, the whole can be arranged compactly and space can be saved. .
[0015]
As can be clearly seen from FIG. 3, a roll-side rotation transmission wheel 42 made of a rubber roll is attached to the end of the nip-side induction heating roll 6A. The transmission shaft 24A is disposed below the nip-side induction heat generating roll 6A in the nip state so that the axis is parallel to the nip-side induction heat generation roll 6A, and an end of the shaft-side rotation transmission wheel 43 made of a rubber roll is disposed. Is attached. The mounting position of the transmission shaft 24A and the shaft-side rotation transmission wheel 43 at the end thereof is separated from the roll-side rotation transmission wheel 42 when the nip-side induction heating roller 6A is pressed against the reference-side induction heating roller 5A. When the nip-side induction heating roll 6A is separated from the reference-side induction heating roll 5A and retracted to the lower retreat position, the outer periphery of the roll-side rotation transmission wheel 42 is connected to the shaft-side rotation transmission wheel 43 as indicated by a two-dot chain line. It is determined so that rotation can be transmitted by contacting the outer periphery of the plate with an appropriate pressing force. Therefore, the roll side rotation transmission wheel 42 and the shaft side rotation transmission wheel 43 are transmitted by the nip side induction heating roller 6A when the nip side induction heating roller 6A moves back to a predetermined position away from the reference side induction heating roller 5A. A rotation transmitting means that is coupled so as to be rotationally driven by the shaft 24A is configured. The configuration of the other nip side induction heating roll 6B and the transmission shaft 24B combined therewith is the same.
[0016]
Next, the operation of the induction heating roll driving device having the above configuration will be described. During normal operation, as shown in FIGS. 1 and 3, the nip-side induction heating rolls 6A and 6B are pressed against the reference-side induction heating rolls 5A and 5B to nip the films 1a and 1b to be bonded. In this state, the reference-side induction heating rolls 5A and 5B are rotated by the driving means 21, and the nip-side induction heating rolls 6A and 6B are rotated by the reference-side induction heating rolls 5A and 5B. Press and paste together. Next, at the start of operation, at the time of temporary stop, at the end, etc., the nip side induction heating rolls 6A and 6B are moved to the retreat positions away from the reference side induction heating rolls 5A and 5B, and are provided respectively. The outer periphery of the roll-side rotation transmission wheel 42 contacts the outer periphery of the shaft-side rotation transmission wheel 43 provided on the transmission shafts 24A and 24B with an appropriate pressing force. Thus, the nip-side induction heating rolls 6A and 6B are rotationally driven by the transmission shafts 24A and 24B. As described above, the reference-side induction heating rolls 5A and 5B are always driven to rotate by the driving means 21, and when the nip-side induction heating rolls 6A and 6B are in the nip position, the reference-side induction heating rolls 5A and 5B In this state, the rotation is driven by the transmission shafts 24A and 24B. For this reason, abnormal thermal deformation due to heat generation of the induction heating roll can be prevented.
[0017]
【The invention's effect】
As described above, the present invention is configured such that the reference-side induction heat generating roll is rotationally driven by the driving means, the nip-side induction heat generating roll is rotatable, and further, a transmission shaft that is rotationally driven by the driving means is provided, and the nip When the side induction heat generating roll is moved away from the reference side induction heat generating roll and retracted to a predetermined position, the nip side induction heat generating roll is driven and connected to the transmission shaft via the rotation transmission means. Using the drive means, both the reference-side induction heating roll and the nip-side induction heating roll can be driven to rotate both in the nip state and in the separated state, so that abnormal deformation due to heat generation can be prevented, and the structure is simple. It has the effect of saving space and cost.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing a roll arrangement of a laminator incorporating an induction heating roll driving device according to an embodiment of the present invention. FIG. 2 is a schematic view of a portion where an induction heating roll driving device is arranged in the embodiment of FIG. Side view [Fig. 3] Schematic cross-sectional view taken along arrow AA in Fig. 2 [Fig. 4] Schematic plan view showing the induction heating roll driving device in an expanded manner [Explanation of symbols]
1, 1a, 1b Film 2, 3 Nip device 5A, 5B Reference side induction heating roll 6A, 6B Nip side induction heating roll 11 Side frame 12, 14 Bearing 15 Guide 16 Removable cylinder 20 Induction heating roll drive device 21 Auxiliary frame 22A , 22B Connecting shaft 23 Driving means 24A, 24B Transmission shaft 26 Driving shaft 27, 28, 31, 32, 35, 36, 38, 39 Pulley 29, 33, 37, 40 Belt 42 Roll side rotation transmission wheel 43 Axle side rotation transmission ring

Claims (3)

To rotationally drive a reference-side induction heating roll provided at a fixed position and a nip-side induction heating roll provided so as to be movable to and away from a position where the reference induction heating roll is nipped and separated from the reference induction heating roll. A driving means for rotationally driving the reference side induction heating roll, and driving the nip side induction heating roll when the nip side induction heating roll is moved back to a predetermined position away from the reference side induction heating roll. A transmission shaft that is disposed at a position where it can be connected and is rotationally driven by the driving means, and a rotational transmission that drives and connects the nip-side induction heating roll to the transmission shaft when the nip-side induction heating roll is retracted to the predetermined position. Induction heating roll drive device having means.   The rotation transmission means has a roll-side rotation transmission wheel attached to rotate integrally with the nip-side induction heating roll, and a shaft-side rotation transmission wheel attached to rotate integrally with the transmission shaft. 2. When the nip side induction heat generating roll is retracted to a predetermined position, the outer periphery of the roll side rotation transmission wheel is in contact with the outer periphery of the shaft side rotation transmission wheel to transmit the rotation. The induction heating roll drive device described.   Two sets of the reference side induction heating roll and the nip side induction heating roll are provided in parallel, and the driving means has a common driving shaft as a driving source for both the reference side induction heating roll, and the driving shaft. A first drive transmission device disposed on a first reference surface perpendicular to the first drive transmission device for transmitting the rotation of the drive shaft to one reference-side induction heating roll; and a second reference surface parallel to the first reference surface; A second drive transmission device that transmits the rotation of the drive shaft to the other reference-side induction heat generating roll, and the second drive transmission device that is disposed on the second reference surface and transmits the rotation of the one reference-side induction heat generation roll to the transmission shaft that is combined therewith. The third drive transmission device and a fourth drive transmission device arranged on the first reference surface and transmitting the rotation of the other reference-side induction heating roll to a transmission shaft combined therewith. 2. Induction heating roller drive Apparatus.

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