JP4560364B2 - Air joint and suction drum device - Google Patents

Description

  The present invention relates to an air joint composed of a fixed body and a movable body, and a suction drum device including a suction drum that conveys a belt-like sheet while adsorbing it.

  A suction drum device having a suction drum (also referred to as a suction roll) is often used as a transport means for transporting a belt-like sheet such as a photographic film, a magnetic tape, paper, and a thin metal plate. As is well known, the suction drum is a rotating drum that rotates while sucking air from a vent hole formed in the peripheral surface thereof using a suction device or the like, thereby adsorbing and conveying the sheet to the peripheral surface. As this suction drum, for example, as described in Patent Documents 1 and 2, a hollow outer cylinder having a vent hole formed in the peripheral surface and held rotatably is provided inside the outer cylinder. A so-called double drum type suction drum having an inner cylinder that forms a sealed vacuum chamber with the outer cylinder, and an air passage that is provided in the inner cylinder and connects the suction device and the vacuum chamber is well known. It has been.

  The double drum type suction drum sucks air only when the vent hole that is moved with the rotation of the outer cylinder is connected to the suction device via the vacuum chamber. Further, it is possible to prevent air from being sucked from the air holes that are not involved in the adsorption of the sheet. As a result, even if an inexpensive suction device with a small suction air volume is used, the suction pressure can be increased so that the sheet does not slip. However, with this type of suction drum, the vacuum chamber is completely sealed. Since the space between the cylinder and the inner cylinder is sealed with a sealing material or the like, the abrasion powder of the seal may accumulate between the outer cylinder and the inner cylinder and the vent hole may be clogged.

  Therefore, as described in Patent Document 3, for example, a suction in which a plurality of openings (hereinafter simply referred to as openings) in which a certain number of air holes on the circumferential surface of the drum individually communicate with each other is formed on the side surface of the drum. The drum is known. In this case, each opening communicates with the vent hole through a vent passage formed radially in the suction drum. And the suction block in which the suction hole connected to the suction device was formed is crimped | bonded to the side surface of the suction drum. The suction hole is formed in such a shape as to be connected to the opening communicating with the air hole only when the air hole moved along with the rotation of the suction drum is in a position where it comes into contact with the sheet. For this reason, air is sucked only from the air holes related to the suction of the sheet according to the rotation phase of the suction drum, so that the suction pressure is increased even if the suction air volume of the suction device is small, as in the double drum type suction drum. be able to.

  Further, when a sheet is conveyed using such a suction drum, if the sheet conveying speed is high, the sheet is in close contact with the drum peripheral surface, but the sheet may not be peeled from the drum peripheral surface at a predetermined position. Further, when the sheet is cut in the vicinity of the downstream side in the conveyance direction of the suction drum, the tension for pulling the sheet in the downstream direction in the conveyance direction is reduced, so that the sheet may not be peeled from the drum peripheral surface.

Therefore, in general, the suction block is formed with a blow hole (discharge port) connected to the blower in addition to the suction hole. The ventilation hole is formed at a position where the ventilation hole is connected to an opening communicating with the ventilation hole when the ventilation hole moves to a peeling position where the sheet is peeled off. As a result, when the air hole that adsorbs the sheet is moved to the peeling position, the air is ejected from the air hole that has previously sucked air, so the sheet is forcibly separated from the drum peripheral surface. Can do. As a result, the sheet can be reliably adsorbed and peeled, and the sheet can be conveyed appropriately.
Japanese Patent Laid-Open No. 2-158554 (first page) JP-A-8-175718 (2nd page) JP 2004-26348 A (5th and 6th pages)

  By the way, the suction drum described in Patent Document 3 rotates in a state in which the suction air blowing block is pressure-bonded to the side surface thereof, and therefore, the side surface of the suction drum and the pressure-bonding surface (sliding surface) of the suction block are arranged. In order to suppress wear on both sides, lubricating oil is applied (lubricated). At this time, if the amount of the lubricating oil applied is small, the oil runs out in a short period of time, and the side surface of the suction drum and the pressure-bonding surface of the suction air blowing block are rapidly worn.

  Therefore, it is possible to prevent running out of oil for a long period of time by increasing the amount of lubricant applied. However, since the side surface of the suction drum and the pressure-bonding surface of the suction block are both formed flat, If it increases, lubricating oil will accumulate in an opening and a suction hole. As a result, there is a possibility that the lubricating oil flows out from the opening to the air passage side by the air sent from the blower, or the lubricating oil flows out from the suction hole by the air sucked by the suction device. If the lubricating oil flows out in this way, problems such as running out of oil in a short period of time, or the lubricating oil being ejected from the vent holes together with the air sent from the delivery device, may occur. Resulting in.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide an air joint and a suction drum device in which the lubricating oil does not flow out even when the amount of the lubricating oil applied is increased.

The present invention provides a fixed body having vent holes arranged on at least one surface, and a movable body having a communication hole arranged on at least one surface on a sliding surface that slides on the surface, the communication hole communicating with the vent holes. In the air joint in which air flows between the holes, a groove is formed in at least part of the vicinity of the vent hole and / or the communication hole, and between the vent hole and / or the communication hole and the groove. The height of the partition part is formed so as not to reach the sliding surface .

Further, the present invention includes a rotating drum in which vent holes communicating with side surfaces are arranged on an outer peripheral surface, and a fixed body in which communication holes are arranged on a sliding surface that slides on a side surface of the rotating drum, and the rotating drum In the suction drum device that circulates air between the vent hole and the communication hole while rotating, and sucks and conveys the belt-like sheet to the outer peripheral surface by a part of the vent hole, the vent hole and / or the A groove is formed in at least a part of the vicinity of the communication hole, and the height of the ventilation hole and / or the partition portion between the communication hole and the groove is formed so as not to reach the sliding surface. It is characterized by being.

In addition, the openings of the air holes formed on the side surface of the rotating drum communicate with each of a certain number of air holes according to the order in which the air holes are arranged, and are arranged at a constant pitch in the rotating direction of the rotating drum. It is preferable. Further, the communication hole includes a suction hole connected to a negative pressure source and a discharge hole connected to a positive pressure source, and the suction holes are a predetermined number of adjacent openings among the openings of the plurality of vent holes. Air is sucked through the discharge hole, and the discharge hole discharges air through at least one other opening. When the belt-like sheet is conveyed, the belt-like part is formed in a part of the plurality of vent holes according to the rotation phase of the rotary drum. It is preferable that the sheet is adsorbed on the outer peripheral surface of the rotating drum, and the belt-like sheet is peeled off from the outer peripheral surface of the rotating drum at another part of the vent hole.

  The openings of the vent holes are preferably arranged on the same radius from the rotation axis of the rotary drum, and communicate with the vent holes through vent passages formed radially in the rotary drum. Moreover, it is preferable that a plurality of the vent holes communicate with one of the openings of the vent holes through the vent path. Furthermore, it is preferable that the fixed body is fixed to the rotating drum in the rotational direction and supported so as to be movable in the axial direction.

  The present invention is a movable body having a fixed body having vent holes arranged on at least one surface and a communication surface arranged on at least one surface on a sliding surface that slides on the surface, wherein the communication holes communicate with the vent holes. In an air joint in which air flows between holes, the air joint is applied around at least a part of the vent hole and / or the communication hole to prevent wear of the one surface of the fixed body and the one surface of the movable body. Since the groove for preventing the lubricating oil from flowing out is provided, it is possible to prevent the lubricating oil from flowing out of the vent hole and / or the communication hole even when the amount of the lubricating oil applied is increased. .

  The suction drum device of the present invention includes a rotating drum in which vent holes communicating with side surfaces are arranged on the outer peripheral surface, and a fixed body in which communication holes are arranged on sliding surfaces that slide with the side surfaces of the rotating drum. The air is circulated between the vent hole and the communication hole while rotating the rotating drum, and a belt-like sheet is adsorbed to the outer peripheral surface by a part of the vent hole and conveyed, and the vent hole and / or Since a groove for preventing the lubrication oil applied from flowing out to prevent wear of the side surface of the rotating drum and the sliding surface of the fixed body is provided around at least a part of the communication hole, Even when the amount of coating is increased, the lubricating oil can be prevented from flowing out of the opening or the suction hole.

  In addition, since the height of the partition between the ventilation hole and / or the communication hole and the groove is set to a height that does not reach the sliding surface, the ventilation hole and / or the communication hole may be Lubricating oil can be made hard to accumulate.

  Further, since the oil return groove is formed on the outer peripheral surface of the partition part, it is possible to prevent the lubricating oil from being transmitted from the root side to the tip side of the outer peripheral surface of the partition part.

  FIG. 1 is a schematic view of a 120 type photographic roll film production line (hereinafter simply referred to as production line) 10 equipped with a sheet cutting apparatus of the present invention. The production line 10 is roughly divided into a film supply line 14 for supplying a photographic film strip 13, a light-shielding paper supply line 17 for supplying a light-shielding paper strip (not shown), a film supply line 14, and a light-shielding paper supply line 17. The spool supply line 20 is arranged at a joining point and includes a spool supply line 20 for winding the photographic film strip 13 and the light-shielding paper strip around the spool 19 in a roll shape.

  The film supply line 14 includes a film supply machine 22 arranged at the uppermost stream, a film cutting machine 23, an adhesive tape applying machine 24, and a plurality of conveyance roller pairs and conveyance guides arranged between the machines. Has been. The film feeder 22 includes the suction drum device of the present invention. As will be described in detail later, two film rolls 27a and 27b each having a long photographic film 26 wound into a roll are set. The film feeder 22 draws out the photographic film 26 from the film rolls 27a and 27b by a certain length, side-prints various film information such as size, sensitivity, and film type, and then sends it out to the film cutting machine 23. .

  In the film cutter 23, the conveyed photographic film 26 is cut into fixed lengths and formed into photographic film strips 13. Then, the formed photographic film strip 13 is conveyed toward the adhesive tape applicator 24. Although not shown in the drawings, the adhesive tape applicator 24 is set with an original roll obtained by winding the release paper with the adhesive tape attached thereto. Then, the adhesive tape applicator 24 pulls out the release paper from the original winding roll, peels the adhesive tape from the release paper, and attaches it to the rear end of the photographic film strip 13 in the transport direction. The photographic film strip 13 to which the adhesive tape has been applied is conveyed toward the spool supply line 20.

  The light shielding paper supply line 17 includes a light shielding paper supply machine 29, a sticker pasting machine 30, a light shielding paper cutting machine 31, and a plurality of conveyance roller pairs and conveyance guides arranged between the machines. It is composed of Although not shown in the drawings, a light shielding paper roll obtained by winding a long light shielding paper 32 into a roll shape is set in the light shielding paper supply unit 26. In the light shielding paper supply unit 26, the light shielding paper 32 is pulled out from the light shielding paper roll by a certain length, punched for trimming and winding of the spool 19, and then sent out toward the seal sticking machine 30.

  Although not shown, the seal sticker 30 is provided with an original winding roll of a seal seal. And this sticker sticking machine 30 draws out the seal sticker from the former roll and cuts it to a predetermined length, and presses the adhesive surface of this seal sticker against the light shielding paper 32 with a heat sealer (not shown), so that the seal sticker is Affixed to a predetermined position on the light shielding paper 32. The light shielding paper 32 to which the seal seal is attached is conveyed toward the light shielding paper cutting machine 31.

  In this embodiment, the light shielding paper cutting machine 31 is disposed as close to the spool supply line 20 as possible in order to shorten the tact time of the production line 10. The shading paper cutting machine 31 cuts the transported shading paper 32 every time the spool 19 is wound around the spool 19 to form a shading paper strip (not shown).

  Further, on the upstream side in the conveying direction of the light shielding paper cutting machine 31, back tension is applied so that the light shielding paper 32 does not meander when the photographic film strip 13 and the light shielding paper 32 (light shielding paper strip) are wound around the spool 19. A back tension roller pair 34 is provided.

  The spool supply line 20 is formed in a disk-shaped spool turret 35 rotatably attached to a shaft, a spool supply machine 36 that supplies the spool 19, and is formed on the outer periphery of the spool turret 35. A spool positioning machine 37 that positions the direction of a slit (not shown) for winding the strip, a winder 38 that winds both strips around the spool 19 provided in the dark room, and a light-shielding paper that is wound around the spool 19 A light-shielding paper folding machine 39 that folds an end of a strip (not shown) inward, a seal wrapping machine 40 that winds an opening seal (not shown) around the outer periphery of the light-shielding paper strip, and a formed photographic roll film 42 An inspection machine 43 for inspecting the roll diameter of the paper, and an integrated transport for conveying the photographic roll film 42 that has passed the inspection to a packaging machine or the like Consisting of the machine 44.

  The spool turret 35 is intermittently rotated 45 degrees clockwise in the figure by a motor (not shown). The spool turret 42 is provided with spool holders 46 for holding the spool 19 at equal intervals, and a motor (not shown) for rotating the spool 19 in the winding direction is connected to these spool holders 46. ing. Further, in the vicinity of each spool holder 46, a touch roller device 47 for pressing both strips against the shaft of the spool 19 is provided.

  The positions at which the spool holders 46 are stopped by the intermittent rotation of the spool turret 35 are the first station ST1 to the seventh station ST7 where various operations are performed on the spool 19, and the first station ST1 to the seventh station. In ST7, a spool supply unit 36, a spool positioning unit 37, a winding unit 38, a light shielding paper folding unit 39, a seal winding unit 40, an inspection unit 43, and an integrated conveyance unit 44 are arranged.

  As shown in FIG. 2, the film feeder 22 is roughly divided into film rolls 27a and 27b that are rotatably set on two frames 48a and 48b, respectively, and connected to the rotation shafts of the film rolls 27a and 27b. The photographic film 26 sent out from the film rolls 27a and 27b by motors (not shown) is respectively sent from the respective film rolls 27a and 27b via the dancer roller devices 49a and 49b and the dancer roller devices 49a and 49b. A roll switching device 50 that switches the photographic film 26 to be conveyed downstream, and a rear end portion of the photographic film 26 that is disposed on the downstream side in the conveying direction of the roll switching device 50 and is fed from one film roll 27a (27b). To the next film roll 27b (27a) The joining apparatus 51 for joining the leading end portion of the photographic film 26 and the present invention are implemented. The photographic film 26 is attached to the downstream film cutting machine 23 while adsorbing the surface opposite to the exposure surface. It consists of a suction drum device 52 that sends it out and a plurality of pass rollers 53 arranged between the devices.

  The dancer roller devices 49a and 49b are for applying a constant load to the photographic film 26 fed from the film rolls 27a and 27b so that the photographic film 26 that is running is not loosened. A dancer roller 55 for applying a load, an arm 56 that rotatably holds the dancer roller 55 at one end, and an arm holding member 57 that rotatably holds the other end of the arm 56 are configured. The dancer roller devices 49a and 49b are provided with a detection sensor (not shown) for detecting the position of the dancer roller 55, and the dancer roller 55 is always within a predetermined range based on the position detection result from the detection sensor. The slackness of the photographic film 26 can be prevented by adjusting the speed at which the photographic film 26 is fed from the film rolls 27a and 27b so that the film film 27 is located at the position.

  The roll switching device 50 is provided on the switching plate 60 and a substantially fan-shaped switching plate 60 that is rotatably held by a holding table 59, and holds the leading end of the photographic film 26 fed from each of the film rolls 27a and 27b. Holders 61a and 61b, a pass roller 53 around which the photographic film 26 is wound, and a photographic film 26 provided in the holders 61a and 61b (not shown) with the leading end of the held photographic film 26 facing the bonding device 51. It is comprised from the conveyance roller pair (not shown) to send out. A motor (not shown) is connected to the rotating shaft of the switching plate 60. For example, when the feeding of the photographic film 26 from the film roll 27a is completed, the switching plate 60 is rotated so that the holder 61b faces the joining device 51. Rotate to position. Then, the leading end of the photographic film 26 held by the holder 61 b is sent out toward the joining device 51.

  Although not shown, the joining device 51 includes a cutter that cuts the photographic film 26 that has been fed out, and a photographic film 26 that has been fed from the next film rolls 27a and 27b to the rear end portion (cutting portion) of the photographic film 26. It is comprised from the connector which joins the front-end | tip part. As this bonding device, any bonding device such as an ultrasonic bonding device or an adhesive tape applicator can be used as long as the front end portion and the rear end portion of the photographic film 26 can be bonded. Then, the joined photographic film 26 is sent out toward the film cutting machine 23 on the downstream side by the suction drum device 52.

  Next, the suction drum device 52 will be described with reference to FIG. Here, FIG. 3 is a side view of the suction drum device 52 of FIG. 2 as viewed from the right side in the drawing. The suction drum device 52 is roughly classified into one end of a rotary shaft 64 and is rotated while sucking air from a plurality of air holes 63 formed on the peripheral surface, thereby sucking and transporting the photographic film 26. Connected to the other end of the drum 65 and the rotating shaft 64, is held in a state where it is pressure-bonded to the right side surface of the suction drum 65 in the drawing, and is a vacuum that is a negative pressure source. A suction blower block 70 connected to a pump 68 (suction device) and a blower blower 69 (blower device) that is a positive pressure source, a motor support member 71 that supports a transport motor 66, and a rotating shaft 64 via a bearing 73. The shaft support member 74 rotatably supports the motor support member 71 and the support base 75 on which the shaft support member 74 is erected.

  The suction drum 65 is an iron rotary drum made of SS400 material that has been subjected to tuftride treatment. The suction drum 65 has a cylindrical drum body 77 having a vent hole 63 formed in the peripheral surface thereof, and a right side surface and a left side surface of the drum body 77 in the figure. And is formed of substantially disk-shaped flanges 78a and 78b larger than the diameter of the suction drum 65. The suction drum 65 is a rotating body that rotates as the rotary shaft 64 is rotated by the transport motor 66.

  On the peripheral surface of the drum body 77, the above-described vent holes 63 are formed in two rows at a constant pitch along the drum circumferential direction (rotation direction). As shown in FIG. 4, each vent hole 63 is formed so as to penetrate from the peripheral surface of the drum body 77 to a vent path (vent chamber) 80 formed therein. Here, FIG. 4 shows a cross-sectional view of the drum main body 77 along the line II in FIG. 3 (the flange 78b is not shown). The air passage 80 extends in a direction parallel to the axial direction of the rotating shaft 64 and in a direction from the rotating shaft 64 toward the drum circumferential surface, and a plurality of the air passages 80 are radially formed around the rotating shaft 64 at predetermined intervals. ing. In this embodiment, a certain number of vent holes 63 arranged in the circumferential direction of the drum are connected to each vent passage 80 in the arrangement order. Therefore, by sucking air through each air passage 80, air is simultaneously sucked from all of the air holes 63 connected to the air passage 80.

  The flanges 78a and 78b regulate the position in the width direction of the photographic film 26 sucked and conveyed on the drum peripheral surface, and close the air passage 80 opened on the side surface of the drum body 77. The screw 82 is fixed to the screw hole 81 formed on the side surface. In the present embodiment, as shown in FIG. 5, circular openings 83 respectively connected to the respective air passages 80 are formed in the flange 78 a at a constant pitch at positions on the same radius from the rotation shaft 64. Each opening 83 communicates with a certain number of air holes 63 through the air passage 80. Here, FIG. 5 is a front view of the flange 78a in FIG. 3 as viewed from the front. Since each opening 83 is formed at the same distance from the rotation shaft 64, it is moved so as to draw the same locus along with the rotation of the suction drum 65 during film conveyance (see FIG. 7).

  The suction air blowing block 70 is a substantially cylindrical iron pressure-bonding block made of SS400 material that has been subjected to tuftride treatment similar to the suction drum 65, and is externally fitted to the rotary shaft 64 via a bearing 85 as shown in FIG. It is formed in such a shape. The suction air blowing block 70 is slidably held in the axial direction of the rotary shaft 64 by a guide mechanism 86 formed of a suspension and a bush provided on the shaft support member 74. Furthermore, since the compression coil spring 87 is provided between the suction air blow block 70 and the shaft support member 74 so as to be fitted on the rotary shaft 64, the suction air blow block 70 is disposed on the side surface of the suction drum 65, that is, It is crimped to the flange 78a. Since the suction air blowing block 70 is fixed in the rotation direction by the guide mechanism 86, it is not carried around even if the suction drum 65 is rotating.

  In addition, as described above, the suction pump block 70 is connected to the vacuum pump 68 via the suction pipe 89 and is connected to the blower blower 69 via the blower pipe 90. The suction pipe 89 and the blower pipe 90 pass through the suction blower block 70, respectively, and are formed with a suction hole 91 and a blower hole 92 (see FIG. 5) formed on the pressure contact surface (sliding surface) with the flange 78a (suction drum 65). 6 and FIG. 7). Thus, as will be described in detail later, when the photographic film 26 is conveyed by rotating the suction drum 65, the photographic film 26 is placed on the outer periphery of the suction drum 65 by a part of the vent hole 63 according to the rotation phase of the suction drum 65. The photographic film 26 can be peeled off from the outer peripheral surface of the suction drum 65 by being adsorbed on the surface and the other part of the vent hole 63.

  As shown in FIGS. 6 and 7, since all the openings 83 move so as to draw the same locus, the suction hole 91 has a shape along the locus, and the ventilation hole 63 starts to wind the photographic film 26. Only when it is between the position A and the peeling position B, it is formed in such a shape as to be connected to a certain number of openings 83 communicating therewith. In the present embodiment, the suction hole 91 is formed so that the width thereof is larger than the diameter of the opening 83. Here, FIG. 6 is a front view of the suction air blowing block 70 as viewed from the suction drum 65 side. FIG. 7 is a view of the suction drum 65 viewed from the flange 78a side, and is an explanatory diagram for explaining the shapes and positions of the suction holes 91 and the air blowing holes 92. As a result, the suction of air from the vent hole 63 that is not involved in the adsorption of the photographic film 26 can be prevented, so that the suction pressure can be increased even if the suction air volume of the vacuum pump 68 is small. As a result, even when an inexpensive vacuum pump 68 with a small suction air volume is used, the photographic film 26 can be prevented from slipping on the drum peripheral surface.

  Here, if the suction hole 91 can prevent the photographic film 26 from slipping, the vent hole 63 does not need to be formed in a shape that sucks air in the entire range between AB, and the wrapping angle of the photographic film 26 is not necessary. Accordingly, the air may be formed so as to be sucked only within a predetermined range between AB.

  The blower hole 92 is a discharge hole of the present invention. In the present embodiment, the air hole 92 is formed so that its diameter is larger than the diameter of the opening 83, and when the air hole 63 is moved to the peeling position B, Is formed at a position where it communicates with at least one opening 83 communicating with. As a result, when the air hole 63 adsorbing the photographic film 26 is moved to the peeling position B, air is ejected (discharged) from the air hole 63 that has previously sucked air. It can be forcibly separated from the drum peripheral surface. As a result, the photographic film 26 can be reliably adsorbed and peeled off, and the photographic film 26 can be conveyed appropriately.

  Since the suction drum 65 is rotated while the suction blower block 70 is pressed against the surface of the flange 78a (side surface of the suction drum 65) during film conveyance, the suction blower block that presses against the surface of the flange 78a and the flange 78a. Lubricating oil 93 (see FIG. 9) is applied (lubricated) to the crimping surface 70 in order to suppress wear on both sides. As the lubricating oil 93, grease having a high viscosity is used in this embodiment. Then, as a method of applying (lubricating) the lubricating oil 93 to both surfaces, although not shown in the figure, for example, one end of the suction air blowing block 70 opens in the pressure-bonding surface, and the other end opens in any surface. However, the present invention is not particularly limited, and any method may be used as long as the lubricating oil 93 can be applied (lubricated) on both sides.

  At this time, if the application amount (lubricating amount) of the lubricating oil 93 is small, the oil runs out in a short period of time as described above, and the surface of the flange 78a and the pressure contact surface of the suction blower block 70 are rapidly worn. In order to prevent running out of oil, it is necessary to periodically apply the lubricating oil 93. In this case, however, a problem arises that the work of the operator who manages the suction drum device 52 increases. Therefore, in this embodiment, as shown in FIG. 6, a plurality of recesses 94 for storing the lubricating oil 93 is formed on the pressure-bonding surface of the suction air blowing block 70. Thereby, since the applied lubricating oil 93 can be stored in the recessed part 94, the application quantity which applies the lubricating oil 93 can be increased. Furthermore, in this case, the storage amount of the lubricating oil 93 can be adjusted by adjusting the number, the shape, and the depth of the recesses 94 to be formed.

  Thus, by forming the concave portion 94 on the pressure-bonding surface of the suction air blowing block 70, it is possible to increase the amount of application of the lubricating oil 93, but both the flange 78a and the pressure-bonding surface of the suction air blowing block 70 are flat. As a result, the lubricating oil 93 accumulates in the opening 83. As a result, when the opening 83 is connected to the blower blower 69 via the blower hole 92, the lubricating oil 93 flows out through the opening 83 into the ventilation path 80 by the air sent from the blower blower 69. If the lubricating oil 93 flows out, there is a risk that the oil will run out in a short period of time, or the lubricating oil 93 may be ejected from the vent hole 63 together with air and adhere to the photographic film 26. Further, since air is constantly sucked from the suction hole 91, the lubricating oil 93 may similarly accumulate in the suction hole 91 and flow out into the suction pipe 89.

  Therefore, in the present embodiment, as shown in FIGS. 7 to 9, endless grooves 95 and 96 are formed so as to surround the openings 83 and the suction holes 91, respectively. Here, FIG. 8 is an enlarged view of one of the openings 83 as viewed from the front, and FIG. 9 is a sectional view of the opening 83 of FIG. 8. In this embodiment, for example, the opening of the opening 83 is shown. Each endless groove 95 is formed such that the diameter φ3 of the opening formed by the endless groove 95 is 16 mm when the diameter φ1 is 9 mm and the diameter φ2 of the blower hole 92 is 18 mm. The cross-sectional shape of the suction hole 91 is substantially the same as the cross-sectional shape of the opening 83 and is not shown. However, the opening formed by the endless groove 96 when the width of the suction hole 91 in this embodiment is 15 mm. An endless groove 96 is formed so that the width of the portion is 22 mm. Note that the values such as φ1 to φ3, the width of the suction hole 91, and the width of the endless groove 96 are not limited to the above values, and optimum values are set for each apparatus. Since the endless grooves 95 and 96 are formed so as to surround the opening 83 and the suction hole 91, respectively, the endless grooves 95 and 96 serve as an oil receiver for receiving the lubricating oil 93, and the opening 83 and the suction hole 91 are lubricated. The oil 93 can be made difficult to accumulate.

  Even when the endless grooves 95 and 96 are formed in this way, the tip surface (opening) of the opening 83 and the pressure-bonding surface of the suction air blowing block 70 are in contact with each other, If the surface of the flange 78a is in contact with the surface of the flange 78a, the lubricating oil 93 may accumulate in the opening 83 or the suction hole 91. Therefore, in the present embodiment, as shown in FIG. 9, the partition portion 97 formed between the endless groove 95 and the opening 83 has a height that is lower than the surface of the flange 87a by a predetermined length h. To form. Note that. The length of h is not particularly limited, but in this embodiment, the partition portion 97 is formed so that h is 2.5 mm. Similarly, the partition 98 formed between the endless groove 96 and the suction hole 91 is also formed so that its height is lower than the pressure contact surface of the suction air blowing block 70 by h. As a result, the tip surface of the opening 83 formed on the tip surface of the partition portion 97 does not come into contact with the pressure-bonding surface of the suction air blowing block 70, so that the lubricating oil 93 can be prevented from accumulating in the opening 83. Similarly, since the tip end surface of the suction hole 91 is not in contact with the surface of the flange 78a, it is possible to prevent the lubricating oil 93 from accumulating in the suction hole 91.

  Further, even when the endless grooves 95 and 96 of the oil receiver described above are formed around the opening 83, the lubricating oil 93 that has flowed into the endless groove 95 extends along the outer peripheral surfaces (outer surfaces) of the partition portions 97 and 98. There is a risk of flowing into the opening 83. Therefore, in the present embodiment, the oil return groove 100 that prevents the lubricating oil 93 from being transmitted from the root side to the tip side of the outer peripheral surface of the partition portion along the circumferential direction on the outer peripheral surface of the partition portion 97 (FIG. 9). Reference). Although not shown, the oil return groove 100 is also formed on the outer peripheral surface of the partition portion 98. Here, in FIG. 9, the oil return groove 100 is formed on the base side of the endless groove 95, but the present invention is not limited to this, and any position on the outer peripheral surface of the partition portion 97 may be used. It may be formed. Thereby, it can suppress that the lubricating oil 93 flows into the opening 83 and the suction hole 91 along the outer peripheral surface of the partition parts 97 and 98. FIG.

  As described above, the endless grooves 95 and 96 are formed around the opening 83 and the suction hole 91, and the partition portions 97 and 98 formed by the endless grooves 95 and 96 have heights on the surface of the flange 87a, respectively. The lubricant is applied to the surface of the flange 78a and the pressure-bonding surface of the suction air blow block 70 by forming the oil return groove 100 on the outer peripheral surface of the suction air blow block 70 while being formed to be lower than the pressure-bonding surface of the suction air blowing block 70. Even if the amount of the oil 93 is increased, the lubricating oil 93 can be prevented from accumulating in the opening 83 and the suction hole 91. As a result, the lubricating oil 93 is prevented from flowing into the air passage 80 through the opening 83 by the air sent from the blower blower 69 and from flowing into the suction pipe 89 by the air sucked into the vacuum pump 68. Can do.

  Next, the operation of the production line 10 provided with the suction drum device 52 having this configuration will be described. When the operation of the line is started by the operator, as shown in FIG. 2, the photographic film 26 is pulled out from the film roll 27a (27b) set in the film feeder 22, and the dancer roller device 49a (49b) and roll switching are performed. It is conveyed toward the suction drum device 52 through the device 50 and the joining device 51.

  As shown in FIGS. 3 and 7, the photographic film 26 conveyed to the suction drum device 52 is wound around the peripheral surface of the suction drum 65 on the surface opposite to the exposure surface. While the vent hole 63 formed in the drum peripheral surface is moved from the winding start position A toward the peeling position B, the opening 83 communicating with the vent hole 63 is connected to the vacuum pump 68 via the suction hole 91. Therefore, air is sucked from the vent hole 63. Therefore, the photographic film 26 wound around the drum peripheral surface can be sequentially conveyed to the peeling position B while adsorbing to the drum peripheral surface so as not to slip.

  When the vent hole 63 is moved to the peeling position B, the opening 83 communicating with the vent hole 63 is connected to the blower blower 90 via the blower hole 92, so that air is ejected from the vent hole 63. As a result, the photographic film 26 adsorbed on the drum peripheral surface while being conveyed from the winding start position A to the peeling position B is forcibly peeled off at the peeling position B, and directed toward the film cutting machine 23 on the downstream side. Can be sent out.

  At this time, in this embodiment, the plurality of recesses 94 are formed on the pressure-bonding surface of the suction air blowing block 70 to be pressure-bonded to the surface of the flange 78a (side surface of the suction drum 65). The amount can be increased. Thus, the occurrence of running out of oil can be suppressed over a long period of time without periodically applying (lubricating) the lubricating oil 93 (see FIG. 6). Further, endless grooves 95 and 96 are formed around the opening 83 and the suction hole 91, respectively, and the partition portions 97 and 98 formed by the endless grooves 95 and 96 have a height corresponding to the surface of the flange 87a and suction. Since the oil return groove 100 is formed on the outer peripheral surface of the blower block 70 so as to be lower than the pressure-bonding surface, the lubricating oil 93 is applied even when the amount of application of the lubricating oil 93 is increased. Can be prevented from accumulating in the opening 83 and the suction hole 91. As a result, the air sent from the blower blower 69 prevents the lubricating oil 93 from flowing into the air passage 80 through the opening 83 and from flowing into the suction pipe 89 by the air sucked into the vacuum pump 68. be able to.

  The photographic film 26 sent out from the suction drum device 52 is side-printed with various types of film information such as size, sensitivity, and film type, and is then conveyed toward the film cutting machine 23. As shown in FIG. 1, the film cutting machine 23 cuts the conveyed photographic film 26 into a photographic film strip 13 by cutting the photographic film 26 every predetermined length. The photographic film strip 13 is conveyed toward the spool supply line 20 after an adhesive tape (not shown) is adhered to the rear end portion in the conveyance direction in the adhesive tape affixing machine 24.

  At the same time, the light-shielding paper feeder 29 pulls out the light-shielding paper 32 by a certain length from a light-shielding paper roll (not shown), performs trimming and punching for winding up the spool 19, and then sends it out toward the seal applicator 30. The light shielding paper 32 is conveyed toward the spool supply line 20 after passing through the light shielding paper cutting machine 31 after the seal sticker is stuck at a predetermined position in the seal sticking machine 30.

  In the first station ST 1 on the outer periphery of the spool turret 35, the spool 19 is set from the spool feeder 36 to the spool holder 46. The spool turret 35 rotates intermittently when the spool 19 is set, and stops the spool holder 46 at the second station ST2. In the second station ST2, the direction of the slit (not shown) of the spool 19 is positioned by the spool positioning machine 37. When the positioned spool 19 is transported to the third station ST3, the light shielding paper 32 is transported toward the third station ST3 (winding machine 38), and the leading end thereof is inserted into the slit of the spool 19. The

  Next, a motor (not shown) connected to the spool holder 46 rotates the spool 19 by several turns in the film winding direction, and winds the light shielding paper 32 around the shaft of the spool 19. When the light shielding paper 32 is wound around the spool 19 for several turns, the photographic film strip 13 is conveyed from the film supply line 14 and is superimposed on the back surface of the light shielding paper 32. A motor (not shown) further rotates the spool 19 in the winding direction to wind the light shielding paper 32 and the photographic film strip 13 around the spool 19. The touch roller device 47 presses the light-shielding paper 32 (light-shielding paper strip) and the photographic film strip 13 against the shaft portion of the spool 19 with an appropriate pressing force, so that the light-shielding paper 32 (light-shielding paper strip) and the photographic film strip 13 are pressed. Extrude air between. At this time, the back tension roller pair 34 applies an appropriate tension to the light shielding paper 30, so that the light shielding paper 30 is wound around the spool 19 without meandering. When the light shielding paper 32 is wound around the spool 19 for a predetermined length, the light shielding paper cutting machine 31 cuts the light shielding paper 32 to form a light shielding paper strip.

  The spool 19 around which the photographic film strip 13 and the light-shielding paper 32 (light-shielding paper strip) are wound at the third station ST3 is pressed by the touch roller device 47 so that the light-shielding paper 32 is not loosened. It is conveyed to the next fourth station ST4 by rotation. At the fourth station ST4, the end portion (rear end portion in the transport direction) of the light shielding paper strip (not shown) is folded inward by the light shielding paper folding machine 39.

  At the fifth station ST5, an opening seal (not shown) is wound around the outer periphery of the light shielding paper strip by the seal winding machine 40. At the sixth station ST6, the roll diameter of the photographic roll film 42 is inspected by the inspection machine 43. The photographic roll film 42 that has failed the inspection of the winding diameter is taken out of the spool holder 46 and discharged out of the inspection machine 43. Then, the photographic roll film 42 determined to be non-defective is taken out from the spool holder 46 at the seventh station ST7, sent to the stacking and conveying device 44, and conveyed toward the packaging machine or the like.

  In the present embodiment, the recess 94 is formed on the pressure-bonding surface of the suction air blowing block 70, but the present invention is not limited to this, and when the flange 78a is sufficiently thick, the flange 78a. Alternatively, it may be formed on the side surface of the suction drum 65. Further, the concave portions 94 may be formed on both surfaces of the surface of the flange 78a and the pressure-bonding surface of the air blowing block 70.

  In the present embodiment, the suction air blowing block 70 is formed in a substantially cylindrical shape, but the present invention is not limited to this, and the pressure contact surface with the suction drum 65 (flange 78a) is formed in a flat shape. If it is, the shape may be formed in an arbitrary shape. In the present embodiment, the opening 83 is formed in a circular shape, but the present invention is not limited to this, and may be formed in an arbitrary shape such as a square.

  Further, in the present embodiment, in order to prevent the lubricating oil 93 from flowing out into the air passage 80 through the opening 83, an endless groove 95 is formed around the opening 83 (similarly to the suction hole 91), The partition portion 97 formed between the endless groove 95 and the opening 83 is formed so that its height is lower than the height of the surface of the flange 78a, and the oil return groove 100 is formed on the outer peripheral surface thereof. However, if it is only necessary to suppress the outflow of the lubricating oil 93 to some extent, the oil return groove 100 does not need to be formed as shown in FIG. In this case, the lubricating oil 93 may flow in a small amount along the outer peripheral surface of the partition portion 97 into the opening 83. However, since the oil return groove 100 does not need to be formed, the manufacturing cost of the suction drum 65 can be kept low. There is an advantage. Furthermore, when it is desired to keep the manufacturing cost of the suction drum 65 low, the amount of outflow of the lubricating oil 93 increases, but the height of the partition portion 97 does not have to be formed low (not shown).

  In the present embodiment, the endless groove 96 is formed around the suction hole 91 in order to prevent the lubricating oil 93 from flowing into the suction pipe 89 due to the air sucked by the vacuum pump 68. When the amount of the lubricating oil 93 flowing out into the suction pipe 89 is small, the endless groove 93 need not be formed. As a result, since the suction hole 91 comes into contact with the flange 78a, the air sucked into the vacuum pump 68 may cause the lubricating oil 93 to slightly flow into the suction pipe 89. However, the manufacturing cost of the suction air blowing block 70 is reduced. It can be kept low.

  In the present embodiment, the air blowing hole 92 is formed in the pressure-bonding surface of the suction air blowing block 70 so that the photographic film 26 adsorbed on the peripheral surface of the suction drum 65 can be forcibly separated at a predetermined position. The present invention is not limited to this, and when the photographic film 26 is peeled off from the surface of the suction drum 65 only by a tension that pulls the photographic film 26 downstream in the transport direction, the air holes 92 are not provided. Good. In this case, since it is not necessary to form the endless groove 95 around each opening 83, the manufacturing cost of the suction blower block 70 can be kept low.

  In the present embodiment, the suction drum device 52 is disposed in the film feeder 22. However, the present invention is not limited to this, and the photographic film 26 (the photographic film strip 13), the light shielding paper 32, and the like. As a sheet conveying means for conveying the image, it may be arranged in the light shielding paper supply machine 29 or between each machine on the film supply line 14 or the light shielding paper supply line 17. Further, the suction drum device 52 of the present invention is not limited to the one provided in the production line 10 for producing the photographic roll film 42, and the suction drum conveys various belt-like sheets such as a thin metal plate, paper and film. It can be applied to a drum device.

  The present invention is not limited to the suction drum device, and is considerably different from a fixed body in which vent holes are arranged on at least one surface, and a movable body in which communication holes are arranged on a surface that slides on one surface of the fixed body. The present invention can also be applied to various air joints in which air flows between the air hole of the fixed body and the communication hole of the movable body.

It is the schematic of the manufacturing line of the roll film for photography provided with the suction drum apparatus of this invention. It is the schematic of the film supply machine arrange | positioned in the most upstream of the film supply line which comprises the same production line. It is a side view of the suction drum device of the present invention. It is sectional drawing along the II line in FIG. 3 of the drum main body of the suction drum which comprises a suction drum apparatus. It is a front view of the flange which comprises a suction drum. It is the front view which looked at the suction ventilation block which comprises a suction drum apparatus from the suction drum side. It is explanatory drawing for demonstrating the shape and position of the suction hole and ventilation hole which were formed in the crimping | compression-bonding surface of a suction ventilation block. It is an enlarged view of the opening formed in the flange. It is sectional drawing of the opening of FIG. It is sectional drawing which showed the other Example which simplified the shape around the opening.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Production line 14 Film supply line 22 Film supply machine 26 Photo film 52 Suction drum apparatus 63 Vent hole 64 Rotating shaft 65 Suction drum 68 Vacuum pump 69 Blower blower 70 Suction fan block 78a Flange 80 Ventilation path 83 Opening 91 Suction hole 92 Blower hole 93 Lubricating oil 94 Concave part 95, 96 Endless groove 97, 98 Partition part 100 Oil return groove

Claims (7)

A fixed body having vent holes arranged on at least one surface; and a movable body having a communication hole arranged on at least one surface on a sliding surface that slides on the surface, between the vent holes and the communication hole. In the air joint where air flows through
A groove is provided in at least part of the vicinity of the vent hole and / or the communication hole,
The air joint, wherein a height of the ventilation hole and / or a partition part between the communication hole and the groove is formed so as not to reach the sliding surface. A rotating drum having a vent hole communicating with a side surface arranged on an outer peripheral surface; and a fixed body having a communication hole arranged on a sliding surface sliding with the side surface of the rotating drum, and the passage through the rotating drum while rotating the rotating drum. In the suction drum device that circulates air between air holes and the communication holes, and adsorbs and conveys the belt-like sheet to the outer peripheral surface by a part of the air holes,
A groove is formed in at least a part of the ventilation hole and / or the vicinity of the communication hole,
The suction drum device, wherein a height of the ventilation hole and / or a partition portion between the communication hole and the groove is formed so as not to reach the sliding surface. The openings of the air holes formed on the side surface of the rotating drum are individually communicated with each other for a certain number of air holes according to the arrangement order of the air holes, and are arranged at a constant pitch in the rotating direction of the rotating drum. The suction drum device according to claim 2 . The communication hole includes a suction hole connected to a negative pressure source and a discharge hole connected to a positive pressure source, and the suction hole passes through a certain number of adjacent openings among the openings of the plurality of vent holes. The discharge hole discharges air through at least one of the other openings, and when the belt-like sheet is conveyed, the belt-like sheet is formed at a part of the plurality of vent holes according to the rotation phase of the rotary drum. 4. The suction drum device according to claim 2 , wherein the suction drum device is adsorbed on the outer peripheral surface of the rotating drum, and the belt-like sheet is peeled off from the outer peripheral surface of the rotating drum at another part of the vent hole. The opening of the vent holes are arranged on the same radius from the axis of rotation of said rotary drum, said rotary drum through the air passage formed radially features that communicates with the vent hole claim 2 5. The suction drum device according to any one of claims 4 to 4 . The suction drum device according to claim 5 , wherein a plurality of the vent holes communicate with one of the openings of the vent holes through the vent path. The suction drum device according to any one of claims 2 to 6 , wherein the fixed body is fixed to the rotating drum in a rotating direction and is movably supported in an axial direction.

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