JP4969737B2 - Method and apparatus for forming coating film on shaft surface - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention adheres to the surface of a shaft, such as a so-called metal core, which is inserted into the center of a cylindrical elastic foam roller such as a developing roller, a charging roller, a paper feed roller, etc. used in a copying machine. The present invention relates to a method and an apparatus for uniformly forming a coating film such as an agent.
[0002]
[Prior art]
In the manufacturing process of the developing roller, the charging roller and the like, a cored bar having a heat-meltable adhesive coating formed on the surface is inserted into the hole formed in the elastic foam, and then the adhesive is removed. After heating and melting, the cored bar and the elastic foam are bonded to each other, cooled, and then the outer shape of the elastic foam is finished by machining into a cylindrical shape centering on the cored bar.
[0003]
As a conventional method for forming a coating film of a heat-meltable adhesive on the outer peripheral surface of a core metal, for example, a liquid adhesive is cored while rotating a substantially horizontal core metal around its central axis. There is a nozzle that moves toward the gold and moves in parallel with the axis of the core.
[0004]
[Problems to be solved by the invention]
However, in the conventional method as described above, since the adhesive is spirally attached to the outer peripheral surface of the core metal, spiral irregularities are formed on the surface of the coating film, and the irregularities cause the core metal to be elastically foamed. When inserted into a hole in the body, it is caught by the edge of the hole, and the insertion of the core metal becomes unsmooth, or a thick part and a thin part occur in the adhesive layer, and the adhesion between the core metal and the elastic foam is not good. There are problems such as uniformity and uneven adhesion.
[0005]
The present invention has been made in view of the above-mentioned problems of the prior art, and allows the coating film to be uniformly and easily and rapidly formed on the shaft surface without causing irregularities. It aims at providing the coating-film formation method and apparatus to the shaft surface.
[0006]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) In the method of forming a coating film to the shaft surface, heated by the heater, and the outer circumferential surface of the application roller that is constant speed in one direction, a uniform coating material in which a heat-fusible adhesive thickness The coating roller is rotated in parallel with the coating roller while rotating a pre-heated cylindrical shaft around the central axis of the coating roller on the outer peripheral surface of the coating roller. The outer peripheral surface of the coating roller is moved away from the coating material by a distance smaller than the thickness of the coating material, and after the shaft has rotated approximately 360 ° or more after approaching the coating roller, the shaft is separated from the outer circumferential surface of the coating roller.
[0007]
(2) In the above item (1) , the shaft on which the coating film is formed is separated from the coating roller and then cooled.
[0008]
(3) In the above item (1) or (2), the separation speed when the shaft on which the coating film is formed is separated from the coating roller is substantially equal to or greater than the circumferential speed of the outer circumferential surface of the coating roller. To do.
[0009]
(4) In the coating film forming apparatus on the shaft surface, a uniform thickness is applied to the coating roller supported by the frame so that it can be rotated at a constant speed in one direction by a motor and to the outer peripheral surface of the coating roller. The coating material supply means and the columnar shaft on which the coating film is to be formed are rotated around the central axis by a motor and parallel to the application roller, with respect to the outer peripheral surface of the application roller. A workpiece supporting means for supporting the movable body ; and a moving means for moving the shaft in a distance direction while maintaining a parallel state with respect to the application roller. The coating material supply means accommodates the molten coating material. It is assumed that a coating material storage tank and a film thickness adjusting blade attached to the coating material storage tank so as to be adjustable with respect to the outer peripheral surface of the coating roller are provided .
[0010]
(5) In the coating film forming apparatus on the shaft surface, a uniform thickness is applied to the coating roller supported by the frame so as to be rotated at a constant speed in one direction by a motor and to the outer peripheral surface of the coating roller. The coating material supply means and the columnar shaft on which the coating film is to be formed are rotated around the central axis by a motor and parallel to the application roller, with respect to the outer peripheral surface of the application roller. A work supporting means for supporting the movement; and a moving means for moving the shaft in a distance direction while maintaining a parallel state with respect to the application roller; and for heating near the outer peripheral surface of the application roller. the heater is provided, and provided with a preheating means for preheating the shaft to be provided with the coating film.
[0011]
(6) In the above paragraph (5) , the preheating means includes a hot plate that is heated by a heater, and a feed means that moves the shaft on which the coating film is to be formed to roll on the hot plate. Shall be provided.
[0012]
(7) In the coating film forming apparatus on the shaft surface, a uniform thickness is applied to the coating roller supported by the frame so as to be rotated at a constant speed in one direction by a motor and to the outer peripheral surface of the coating roller. The coating material supply means and the columnar shaft on which the coating film is to be formed are rotated around the central axis by a motor and parallel to the application roller, with respect to the outer peripheral surface of the application roller. a workpiece support means for supporting a movable, the shaft, relative to the application roller, while maintaining the parallel state, and a moving means for perspective move, further supporting the shaft coating film is formed, a cooling means having a conveyor for naturally cooling the shaft during the transport at low speed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of a coating film forming apparatus for a shaft surface of the present invention.
[0014]
This apparatus includes a hopper (3) for accommodating a plurality of shafts (2) (see FIG. 2) for forming a coating film on a surface at a substantially equal height in a substantially rectangular parallelepiped frame (1), and a preheating. The device (4), the coating device (5), and the cooling device (6) are arranged so as to be arranged from left to right, and the cooling device (6) is arranged from the right end of the preheating device (4). Above the left end, the preheated shaft (2) is transferred from the preheating device (4) to the coating device (5), and at the same time, the shaft (2) on which the coating material is applied in the coating device (5). ) Is transferred to the cooling device (6), and a hot-melt adhesive as a coating material is heated and melted above the right part of the cooling device (6). A coating material melting tank (8) for supplying the coating device (5) is provided.
[0015]
As shown in FIG. 2, the bottom plate (3a) of the hopper (3) is inclined toward the lower right, and is accommodated in the hopper (3) between the right end and the right side plate (3b). In addition, a plurality of shafts (2) are arranged between the pusher (10) and the side plate (3b) that can push up the plurality of shafts (2) upward by the operation of the hydraulic cylinder (9) at an appropriate time. An exit guide (11) is provided that guides 2) in a vertical direction and directed downward.
[0016]
Immediately below the outlet guide (11), the front and rear parts of the lowermost shaft (2) are received by the tip parts of a pair of front and rear arms (12), and the hydraulic cylinder (13) is operated to the right. A feeding device (14) for transferring to the preheating device (4) is provided.
[0017]
As shown in FIGS. 1 to 4, the preheating device (4) has a plurality of shafts (2) fed one by one from the feeding device (14) by means of a plurality of serrated receiving grooves (15 a). A pair of front and rear support plates (15) that are horizontally supported at equal intervals in the left-right direction, and arranged on the outside of each support plate (15) so as to be raised and lowered by a hydraulic cylinder (16), Further, a pair of front and rear lifting plates (18) having a saw-toothed pawl (17) provided at the same pitch as the receiving groove (15a) at the upper end of the support plate (15) and shifted left and right by a half pitch. ) And a pair of front and rear slits (20a) cut in the right direction from the front and rear portions of the left end, the front and rear support plates (15) and the lift plate (18) are accommodated, and the front and rear support By a heater (19) such as a sheathed heater disposed substantially horizontally and in contact with the lower surfaces of the plurality of shafts (2) supported by the plate (15). Includes axes substantially horizontal hot plate and (20) which is adapted to uniformly preheat the (2).
[0018]
Each time the lifting plate (18) is moved up and down by the operation of the hydraulic cylinder (16), the shaft (2) fed by the feeding device (14) and the receiving grooves (15a) of the support plate (15) The received shaft (2) is fed to the right by one pitch of the receiving groove (15a) while rolling sequentially along the edge of the inclined feeding pawl (17) and the edge of the receiving groove (15a). .
[0019]
That is, the supporting plate (15), the hydraulic cylinder (16), the lifting plate (18), etc., cause the plurality of shafts (2) to roll on the heating plate (20) stepwise to the right. A feeding means (21) for moving is formed.
[0020]
The hot plate (20) is preferably made of, for example, beryllium copper or a high-strength aluminum alloy in terms of strength, heat transfer, heat conduction, etc., but may be made of other materials.
[0021]
The preheating temperature of the shaft (2) is preferably 100 ° C. to 130 ° C., and the local variation in temperature is preferably stopped within 10 ° C.
[0022]
The transfer means (7) is moved in the left-right direction within the range between the left limit shown in FIG. 1 and the right limit indicated by the imaginary line by an air cylinder (22) facing horizontally in the horizontal direction supported by the frame (1). A short air cylinder (23) facing downward, a horizontal lift plate (24) provided at the lower end of the air cylinder (23) and lifted and lowered by the operation of the air cylinder (23), Gripping the front and rear ends of the shaft (2) with a pair of open and close fingers (25) provided downward on both sides of the left and right sides of the plate (24) and provided at the lower end Means (26).
[0023]
As shown in FIGS. 1 and 5 to 8, the coating device (5) is fixed to the frame (1) and connected to the coating material melting tank (8) via the coating material supply pipe (27). The coating material storage tank (28) and the shaft (29a) are rotatably mounted on the front and rear side walls thereof, and the lower part is immersed in the molten coating material (30) stored in the coating material storage tank (28). It is attached to the upper end of the applied roller (29) facing in the front-rear direction and the blade mounting wall (28a) provided in the coating material storage tank (28) so that the mounting position in the left-right direction relative to the application roller (29) can be adjusted The film thickness adjusting blade (31), and the coating width limiting blade attached so as to overlap vertically with the film thickness adjusting blade (31) on both sides of the upper end of the blade mounting wall (28a) in the same manner ( 32) The shaft (2) and the shaft (2) are supported in such a manner that they are parallel and horizontal to the application roller (29) while being rotatable and are movable relative to the application roller (29). And a click support means (33).
[0024]
As shown in FIG. 7, the coating material storage tank (28) has a temperature sensor (34) for detecting the temperature of the coating material (30) accommodated therein, and the detected temperature of the temperature sensor (34). The liquid level of the heater (35) for heating the coating material (30) and the coating material (30) in the coating material storage tank (28) is detected so that the preset temperature is maintained. A liquid level sensor (36) for adjusting the supply amount of the coating material (30) from the coating material melting tank (8) is provided so as to be always maintained within a predetermined range.
[0025]
As shown in FIG. 6, a sprocket (37) is fixedly fitted to the rear end portion of the shaft (29a) of the application roller (29) protruding from the rear end of the coating material storage tank (28). ) And a sprocket (39) fixedly fitted to the shaft of the motor (38) installed on the left side of the coating material storage tank (28), a chain (40) is hung around the application roller (29). The motor (38) is rotated at a constant speed counterclockwise in FIG. 7 via the sprockets (37) and (39) and the chain (40) by the operation of the motor (38).
[0026]
As shown in FIGS. 5 and 6, the work support means (33) is disposed below the coating material storage tank (28) so as to face in the front-rear direction, and is laterally moved by the lateral feed device (41). The slide table (42) that can be moved to the top and the support table (43) (43) that stands up from the front and rear ends thereof, and the shaft (2) is connected to the coating material storage tank (28). On the upper side, it is provided on a centering shaft (44) and a main shaft (45) sandwiched from the front and rear so as to face the horizontal and horizontal directions parallel to the application roller (29), and provided on the rear support base (43). ), And a motor (46) for rotating the shaft (2) in the clockwise direction in FIG.
[0027]
The centering shaft (44) and the main shaft (45) may be the same as those in a lathe, and a chuck (not shown) for holding the shaft (2) as a workpiece is provided on the main shaft (45) side. By operating the air cylinders (47) and (48), the shaft (2) which is moved inward and backward by each other and gripped by the gripping means (26) in the transfer means (7) can be gripped under pressure from the front and rear. It can be withdrawn.
[0028]
The lateral feed device (41) includes a screw rod (49) facing left and right that is screwed into a screw hole (not shown) drilled in a downward projection (42a) provided on the lower surface of the slide table (42). The slide table (42) can be moved in the left-right direction by rotating forward and backward with the motor (50) provided in (1).
[0029]
In the coating device (5), the position of the film thickness adjusting blade (31) is adjusted so that the gap (D1) between the outer peripheral surface of the coating roller (29) and the film thickness adjusting blade (31) becomes an appropriate value. The blade mounting wall (28a) is fixed, and the position of the coating width limiting blade (32) is adjusted so that the tip thereof is always in sliding contact with the outer peripheral surface of the coating roller (29). Secure to (28a).
[0030]
The gap (D1) should be determined based on the material of the coating material, the thickness of the coating film to be formed on the outer peripheral surface of the shaft (2), etc. For example, the coating material (30) is bonded to the EVA system. When used as an agent, it is preferably 30 to 500 μm.
[0031]
In this embodiment, a coating material melting tank (8), a coating material supply pipe (27), a coating material storage tank (28), a film thickness adjusting blade (31), a coating width limiting blade (32), etc. On the outer peripheral surface of (29), a coating material supply means (51) for supplying the coating material with a uniform thickness is formed.
[0032]
The cooling device (6) supports the front and rear ends of the shaft (2) that is gripped and fed by the right gripping means (26) in the transfer means (7), and moves it toward the right side at a low speed. It is provided with a conveyor (52) adapted to naturally cool the shaft (2) while being conveyed. If necessary, a blower (not shown) for supplying cooling air may be provided on a number of shafts (2) supported on the conveyor (52).
[0033]
Next, an outline of the method for forming a coating film on the shaft surface of the present invention using the above-described apparatus will be described.
[0034]
It is preferable that all of the driving means, heaters, and the like of each part of the above apparatus are automatically controlled by a control device connected thereto so as to operate as described below.
[0035]
A large number of the shafts (2) accommodated in the hopper (3) are fed to the preheating device (4) one by one by a feeding device (14) every predetermined cycle time.
[0036]
In the preheating device (4), the shaft (2) fed by the feeding device (14) is received by the support plate (15) every time the lifting means (24) in the feeding means (21) is lifted and lowered. While rolling to the groove (15a) one pitch at a time, it is sent to the right side step by step. During that time, the heater (19) is heated uniformly by a hot plate (20) heated to a set temperature, for example, 195 ° C ( Preheated).
[0037]
The shaft (2) that has been heated almost uniformly to a predetermined temperature, for example, 110 ° C., and has reached the right end of the support plate (15) is moved back and forth by the left gripping means (26) in the transfer means (7). The end is gripped and transferred to a predetermined position in the coating device (5).
[0038]
At this position, the shaft (2) is pinched from the front and rear by the centering shaft (44) and the main shaft (45) in the work support means (33), and then the fingers (26) of the grip means (26) in the transfer means (7) 25) is opened and the transfer means (7) is returned to its original position.
[0039]
Thereafter, the shaft (2) is rotated clockwise in FIG. 7 by the operation of the motor (46), for example, at a rotational speed of 200 to 400 rpm, and the application roller (41) is operated by the operation of the lateral feed device (41). Toward 29), it is moved to the right at a speed of, for example, 0.5 m / sec.
[0040]
On the other hand, the application roller (29) is rotated counterclockwise in FIG. 7 by the operation of the motor (38), for example, at a rotation speed of 20 rpm. At this time, the lower part is immersed in the coating material (30). Therefore, the coating material (30) adheres to the outer peripheral surface, and the thickness thereof is substantially the same as the gap (D1) set as described above when passing through the film thickness adjusting blade (31). After adjustment, the excess coating material (30) is scraped off by the film thickness adjusting blade (31). In addition, the coating material (30) adhering to both sides of the outer peripheral surface of the application roller (29) is all scraped off by the application width limiting blade (32) and adhered to the outer peripheral surface of the application roller (29). The width of (30) is limited to a desired coating material adhesion region on the outer peripheral surface of the shaft (2).
The coating material (30) is an EVA adhesive, and the temperature of the coating material storage tank (28) is 140 ° C.
[0041]
In this state, when the shaft (2) approaches the coating roller (29) to a predetermined distance smaller than the thickness of the coating material (30) supplied to the outer peripheral surface of the coating roller (29), that is, the shaft (2 ) And the application roller (29) reach a predetermined value smaller than the gap (D1), the lateral movement of the shaft (2) by the lateral feed device (41) is stopped.
[0042]
The gap (D2) is, for example, D2 = D1− (10 to 200 μm) when the coating material (30) is an EVA adhesive and the gap (D1) is 30 to 500 μm as described above. preferable.
[0043]
At this time, the coating material (30) adhering to the outer peripheral surface of the application roller (29) is transferred and uniformly adhered to the outer peripheral surface of the shaft (2).
[0044]
At this time, it is preferable that the peripheral speed of the outer peripheral surface of the shaft (2) and the peripheral speed of the outer peripheral surface of the application roller (29) are substantially matched. As a result, the thickness of the coating material (30) adhering to the outer peripheral surface of the shaft (2) becomes thinner than desired (when the shaft (2) side is faster), or the shaft on the outer peripheral surface of the application roller (29). This is because it is possible to prevent the accumulation of the coating material (30) on the upstream side of (2) (when the shaft (2) side is slow).
[0045]
When the shaft (2) stops moving to the right, when the shaft (2) rotates approximately 360 ° or more, the transverse feed device (41) operates in the opposite direction to the above, and the shaft (2) It can be moved to the left to leave 29).
[0046]
At this time, the separation speed when the shaft (2) is separated from the application roller (29) is set to a value substantially equal to or greater than the peripheral speed of the outer peripheral surface of the application roller (29), for example, 2 m / sec. Is preferred. If the speed is lower than that, the pool of the coating material (30) on the upstream side of the shaft (2) moves to the outer peripheral surface of the shaft (2), and the outer peripheral surface of the shaft (2) is coated in the axial direction. This is because a raised portion of the material (30) is formed, and the thickness of the coating material (30) on the outer periphery of the shaft (2) becomes uneven.
[0047]
When the shaft (2) is moved to the delivery position to the transfer means (7), the operation of the lateral feed device (41) stops, and then the left grip means (26) in the transfer means (7) At the same time as gripping the rightmost shaft (2) in the preheating device (4), the front and rear of the painted shaft (2) supported by the work support means (33) by the right gripping means (26) And the centering shaft (44) and the main shaft (45) of the work support means (33) are opened back and forth, and then the painted shaft (2) is transferred to the conveyor (6) in the cooling device (6). 52) is transferred onto the left end.
[0048]
At the same time, the new shaft (2) gripped by the left gripping means (26) is transferred to the work support means (33) in the same manner as described above, and the same steps as described above are performed. Repeated.
[0049]
【Effect of the invention】
According to the first aspect of the present invention, the coating material adhered to the outer peripheral surface of the coating roller is transferred so as to be transferred to the outer peripheral surface of the shaft. It is possible to form uniformly, easily and quickly.
[0050]
Moreover, even a highly viscous adhesive can be uniformly applied to the shaft surface.
[0051]
According to the second aspect of the present invention, the hot-melt adhesive adhered to the shaft surface can be rapidly cured.
[0052]
According to the third aspect of the present invention, the pool of coating material generated on the upstream side of the shaft on the outer peripheral surface of the coating roller is transferred to the shaft surface, and a rising portion of the coating material facing the axial direction is formed on the shaft surface. Can be prevented.
[0053]
According to the invention described in claims 4, 5 and 7, the method invention described in claim 1 can be effectively implemented, and an apparatus having a simple structure and a low cost can be provided.
[0054]
According to the invention of claim 4, the thickness of the coating material adhering to the outer peripheral surface of the coating roller can be freely adjusted.
[0055]
According to the fifth aspect of the present invention, it is possible to provide an apparatus capable of effectively implementing the method of the first aspect of the invention and uniformly applying a heat-meltable coating material to the shaft surface.
[0056]
According to the sixth aspect of the present invention, the shaft on which the coating film is to be formed can be preheated continuously and uniformly by an inexpensive means.
[0057]
According to the invention described in claim 7, it is possible to provide an inexpensive apparatus capable of effectively carrying out the method invention described in claim 2 .
[Brief description of the drawings]
FIG. 1 is a front view, partly broken, of an embodiment of an apparatus of the present invention.
FIG. 2 is also a longitudinal sectional front view of a hopper and a preheating device in the apparatus.
FIG. 3 is a plan view schematically showing the main part of the preheating device.
FIG. 4 is a front view schematically showing the main part of the preheating device.
FIG. 5 is also a front view of the coating apparatus.
FIG. 6 is also a plan view of the coating apparatus.
FIG. 7 is also a longitudinal front view schematically showing the main part of the coating apparatus.
FIG. 8 is also a plan view schematically showing the main part of the coating apparatus.
[Explanation of symbols]
(1) Frame
(2) Axis
(3) Hopper
(3a) Bottom plate
(3b) Side plate
(4) Preheating device
(5) Coating device
(6) Cooling device
(7) Transfer means
(8) Coating material melting tank
(9) Hydraulic cylinder
(10) Pusher
(11) Exit guide
(12) Arm
(13) Hydraulic cylinder
(14) Feeder
(15) Support plate
(15a) Receiving groove
(16) Hydraulic cylinder
(17) Feeding nail
(18) Lift plate
(19) Heater
(20) Hot plate
(20a) Slit
(21) Feeding means
(22) Air cylinder
(23) Air cylinder
(24) Lift plate
(25) Finger
(26) Grasping means
(27) Coating material supply pipe
(28) Coating material storage tank
(28a) Blade mounting wall
(29) Application roller
(29a) shaft
(30) Coating material
(31) Thickness adjustment blade
(32) Application width limit blade
(33) Work support means
(34) Temperature sensor
(35) Heater
(36) Liquid level sensor
(37) Sprocket
(38) Motor
(39) Sprocket
(40) Chain
(41) Horizontal feed device
(42) Slide table
(42a) Downward protrusion
(43) Support stand
(44) Centering shaft
(45) Spindle
(46) Motor
(47) (48) Air cylinder
(49) Screw 杆
(50) Motor
(51) Coating material supply means
(52) Conveyor
(D1) (D2) Gap

Claims (7)

Supply the coating material as a heat-meltable adhesive with a uniform thickness to the outer peripheral surface of the application roller heated by a heater and rotated at a constant speed in one direction , and on the outer peripheral surface of the application roller, The pre-heated columnar shaft for forming the coating film is rotated around its central axis, and is parallel to the coating roller, and smaller than the thickness of the coating material supplied to the outer peripheral surface of the coating roller. A method of forming a coating film on a shaft surface, characterized in that the shaft is moved away from the outer peripheral surface of the coating roller after the shaft is rotated by approximately 360 ° or more after approaching the coating roller after being moved away by a distance. 2. The method of forming a coating film on a shaft surface according to claim 1 , wherein the shaft on which the coating film is formed is cooled after being separated from the coating roller. 3. The coating film on the shaft surface according to claim 1 or 2 , wherein the separating speed when the shaft on which the coating film is formed is separated from the coating roller is substantially equal to or greater than the circumferential speed of the outer circumferential surface of the coating roller. Forming method. A coating roller supported by the frame so as to be rotated at a constant speed in one direction by a motor, a coating material supply means for coating the coating material with a uniform thickness on the outer peripheral surface of the coating roller, and a coating film A workpiece support means for supporting a columnar shaft to be formed so as to be movable in a distance with respect to the outer peripheral surface of the coating roller while being rotated around a central axis by a motor and parallel to the coating roller. And a moving means for moving the coating roller in a parallel manner while maintaining a parallel state , the coating material supply means having a coating material storage tank for storing the melted coating material, and an interval with respect to the outer peripheral surface of the coating roller And a film thickness adjusting blade attached to the coating material storage tank so as to be adjustable . A coating roller supported by the frame so as to be rotated at a constant speed in one direction by a motor, a coating material supply means for coating the coating material with a uniform thickness on the outer peripheral surface of the coating roller, and a coating film A workpiece support means for supporting a columnar shaft to be formed so as to be movable in a distance with respect to the outer peripheral surface of the coating roller while being rotated around a central axis by a motor and parallel to the coating roller. , with respect to the application roller, while maintaining the parallel state, and a moving means for perspective move further, a heater for heating provided near the outer peripheral surface of the application roller, and to be formed a coating film wherein film forming apparatus in the axial surface characterized in that a preheating means for preheating the shaft. The preheating means comprises a hot plate heated by a heater, and a feed means for moving a shaft for forming a coating film so as to roll on the hot plate. 5. The apparatus for forming a coating film on the shaft surface according to 5 . A coating roller supported by the frame so as to be rotated at a constant speed in one direction by a motor, a coating material supply means for coating the coating material with a uniform thickness on the outer peripheral surface of the coating roller, and a coating film A workpiece support means for supporting a columnar shaft to be formed so as to be movable in a distance with respect to the outer peripheral surface of the coating roller while being rotated around a central axis by a motor and parallel to the coating roller. , with respect to the application roller, while maintaining the parallel state, and a moving means for perspective move, further supporting the shaft coating film is formed, to cool the shaft while transporting at a low speed conveyor film forming apparatus in the axial surface characterized in that a cooling means having a.

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