JP2016033016A - Web feeding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a web delivery machine capable of precisely delivering a web by a predetermined amount, and reducing production cost.SOLUTION: A web delivery machine comprises: a cylinder part 10 for forming a web S formed of a resin material into a cylinder shape; drive means for delivering the web S formed into a cylinder shape along a direction where the cylinder part 10 extends; and control means 40 for controlling so that the web S is delivered by a constant amount, by control drive of the drive means. The drive means comprises; a rotary member 20 disposed so as to contact an outer periphery of the cylinder part 10 and rotatable along the direction where the cylinder part 10 extends; and a rotary drive source 25 for applying rotary force to the rotary member 20. The cylinder part 10 comprises a coating film 13b having small friction resistance on its outer periphery, and holds the web S between the rotary member 20 and the coating film 13b and delivers the web S by a constant amount. Thereby, the web S to be delivered slips smoothly the coating film 13b of the cylinder part 10, so that, the web S can be delivered by the predetermined amount precisely, according to rotation of the rotary member 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a web feeding machine capable of bending a planar web into a cylindrical shape and feeding a cylindrical web by a predetermined length while reducing costs.

  As disclosed in Patent Document 1, a conventional web feeding machine has a cylindrical portion that bends a sheet-like web into a tubular shape, and a web that is bent into a tubular shape along the direction in which the tubular portion extends. A rotating member that feeds out; an air suction unit that is arranged adjacent to the rotating member and sucks the web; and a control unit that controls the rotating member and the air suction unit.

  The rotating member is rotated by receiving a drive from a rotation drive source, and is driven around a driving roller disposed at a lower portion of the cylindrical portion, a driven roller disposed at an upper portion of the cylindrical portion, and wound around the driving roller and the driven roller. And a feeding belt that rotates and rotates with them. The feeding belt is provided with a plurality of suction holes at a predetermined interval.

  The air suction means is arranged between the driving roller and the driven roller, and is configured to be able to suck air through the suction hole of the feeding belt that rotates from the outer peripheral side of the cylindrical portion.

  Thus, in the conventional web feeding machine, when the web bent in a cylindrical shape is fed out, the air suction means and the rotation drive source are driven by the control means, respectively, and therefore the surface of the feeding belt on which the web rotates. It becomes difficult to come into contact with the outer periphery of the cylinder part. Therefore, the web is fed out by a predetermined amount along with the rotation of the feeding belt and has an accurate length.

JP 2012-126447 A

  However, since the conventional web feeding machine requires air suction means, there is a problem that the cost increases. Further, since the air suction means always sucks ambient air, for example, in a work environment with much dust, there is a problem that high suction performance cannot be exhibited for a long time and work efficiency is poor. Further, the conventional web feeding machine has to drive and control the air suction means and the rotation drive source, and there is a problem that requires complicated control.

  The present invention has been made in view of the above problems, and a cylindrical portion that bends a web made of a resin material into a cylindrical shape, and a web that is bent into a cylindrical shape is fed out in the extending direction of the cylindrical portion. In a web feeding machine comprising a driving means and a control means for controlling the driving means to drive the web in a fixed amount, the driving means is rotatable along the extending direction of the cylindrical portion and It comprises at least a rotating member arranged in contact with the outer periphery of the cylindrical part and a rotational drive source for imparting rotation to the rotating member, and the cylindrical part is provided with a coating film having a low frictional resistance characteristic on the outer periphery. The web is sandwiched between the rotating member and the coating film, and is fed out quantitatively. The cylindrical portion includes a detachable plate disposed along the extending direction, and the plate is disposed so as to contact the outer periphery of the rotating member, and includes the coating film on the contact surface. Preferably it consists of: The coating film is preferably formed of a fluororesin. Furthermore, it is preferable that the rotating member is a driving roller which is formed in a cylindrical shape and whose friction resistance on the outer periphery thereof is set larger than that of the coating film.

  Since the web feeding machine according to the present invention does not require an air suction means as in the prior art, it can reduce the cost associated with its manufacture. Further, the web feeding machine of the present invention has a structure in which the web is sandwiched between the rotating member and the cylindrical portion. However, since the coating film having a low frictional resistance is applied to the outer periphery of the cylindrical portion, Even if it is fed out in contact with the cylindrical part, it is smoothly slipped out in the extending direction of the cylindrical part. Therefore, idling of the rotating member is unlikely to occur, and the web is fed out by an accurate length. That is, the web feeding machine of the present invention has an advantage that the web can be fed out with an accurate length and the cost for manufacturing the web can be reduced as compared with the conventional one.

  Furthermore, the web feeding machine according to the present invention includes a plate member that is arranged along the extending direction of the tube portion and is detachable from the tube portion, and the coating film is applied to the surface of the plate member. Therefore, only a part of the outer periphery of the cylindrical portion that is brought into contact between the rotating member and the cylindrical portion and the web that is fed out can be made a member having a small frictional resistance. That is, since it is not necessary to apply the coating film to the entire outer periphery of the cylindrical portion, there is an advantage that the range in which the coating film is applied can be minimized and the cost for manufacturing the cylindrical portion can be reduced. Further, the web feeding machine according to the present invention, for example, has been unable to smoothly feed out the web due to wear of the coating film or lamination of the wax adhering to the surface of the web from above the coating film due to long-term use. Even if it is a case, since the said board | plate material is comprised so that attachment or detachment is possible, there also exists an advantage which can be restored rapidly to the characteristic of the initial small frictional resistance only by replacing | exchanging the said board | plate material.

  In the web feeding machine of the present invention, the coating film is made of a fluororesin that is relatively distributed in the market. This also has the advantage that the cost associated with the coating process is lower than that of special coating materials that are not widely distributed.

  In addition, the web feeding machine according to the present invention uses a driving roller having a frictional resistance larger than that of the coating film as the rotating member, and therefore does not require a driven roller or a feeding belt as in the prior art. Therefore, there is an advantage that the cost for manufacturing the driving means can be reduced as compared with the conventional one. In addition, since the outer peripheral surface of the driving roller is set to be larger than the frictional resistance of the coating film, the web sandwiched between the cylindrical portion and the driving roller is smooth in the coating film. It is easy to slip and is fed out according to the rotation amount of the drive roller without slipping on the outer peripheral surface of the drive roller. That is, since the web feeding machine of the present invention has a difference in frictional resistance between the outer periphery of the cylindrical portion and the outer periphery of the rotating member, the web is easy to cling to the outer periphery of the rotating member, and the cylindrical portion Since it is easy to slip on the outer periphery, there is an advantage that a predetermined amount is reliably fed out.

It is a schematic explanatory drawing which concerns on the web feeding machine of this invention. It is a perspective view which shows the cylinder part of the web feeding machine of this invention. It is a schematic explanatory drawing for demonstrating the cylinder part of the web feeding machine of this invention, (a) is a right view which shows one Embodiment of a cylinder part, (b) is the AA line of (a). It is sectional drawing.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. The web feeding machine 1 of the present invention has a cylindrical portion 10 arranged to extend in the vertical direction, a rotating member 20 arranged to always contact the outer periphery of the cylindrical portion 10, and rotation transmitted to the rotating member 20. And a control unit 40 that controls the rotational drive source so that a predetermined amount of the web S sandwiched between the outer periphery of the cylindrical portion 10 and the rotational member 20 is fed out. Become.

  The cylindrical portion 10 includes a guide plate 12 that guides the sheet-shaped web S to flow in a vertical direction, a cylindrical main body 11 that guides the web S that is inserted into the guide plate 12 and bent into a cylindrical shape, The plate body 13 is provided on the lower outer periphery of the cylinder main body 11 and arranged at a position in contact with the rotating member 20.

  The guide plate 12 includes an inner peripheral surface 12a formed in a cylindrical shape by winding a SUS plate, and an inclined surface 12b disposed at one end. Further, the guide plate 12 is arranged on the upper portion of the cylinder body 11, and is arranged such that the inclined surface 12b faces upward. As a result, the web S flows downward through the gap between the inclined surface 12b and the cylinder body 11, and is bent into a cylindrical shape.

  The said cylinder main body 11 is comprised from the thick pipe which consists of SUS materials, and is distribute | arranged so that it may extend in a perpendicular direction. Further, the cylinder body 11 is provided with an opening 11a for introducing a part to be packed (not shown) at its upper end, and a part insertion passage 11b for guiding the part that is introduced and dropped. Further, the cylinder body 11 has two surface widths 11c and 11c formed on the outer periphery of the lower portion and arranged at opposing positions. The bottom surface of these two surface widths 11c is arranged at two places above and below the part insertion. Tap holes 11d and 11d communicating with the passage 11b are provided. The two-sided widths 11c and 11c are provided with counterbore holes 13a and 13a for accommodating the heads of countersunk screws that can be screwed into the tap holes 11d, and a coating film 13b applied to at least one surface. The provided plate members 13 and 13 are arranged, respectively, and these plate members 13 and 13 are fixed by the countersunk screws and configured to be detachable from the tube main body 11.

  The coating film 13b has a characteristic of low frictional resistance. In the present embodiment, the coating film 13b is configured to be coated with a fluororesin and to have excellent slipping characteristics. Accordingly, even when the web S flowing downward is rubbed against the surface of the plate 13, the web S smoothly slides downward due to the excellent characteristics of the coating film 13b.

  Further, since the web S is made of a resin material and is wound in a roll shape, the web S is peeled off from being overlapped in layers before being supplied to the guide plate 12, and the posture is changed to a sheet shape. That is, the posture of the web S must be easily changed from a roll shape to a sheet shape, and the above-described overlapping surface is coated with a highly peelable wax in advance. As a result, although the wax adheres to both surfaces of the web S whose posture has been changed to a sheet shape, it does not easily adhere to the plate material 13 due to the characteristics of the coating film 13b even if it contacts the surface of the plate material 13. Therefore, the surface of the plate member 13 has excellent slipperiness over a long period of time, and the plate member 13 does not need to be frequently replaced.

  Moreover, the said web S bent in the cylinder shape has the location which overlaps in the longitudinal direction, and this overlap location is heat-welded by the vertical seal means which is not shown in figure. On the other hand, the transverse direction of the web S is also thermally welded by lateral sealing means (not shown). The vertical sealing means is disposed along the extending direction of the tube main body 11, is disposed between the guide plate 12 and the plate members 13, 13, and the overlapping portion of the web S is defined as the tube main body. It is comprised so that it may heat-weld against 11 outer periphery. On the other hand, the horizontal sealing means is disposed below the cylinder body 11 and sandwiches the web S formed in a cylindrical shape in the width direction so as to be heat-welded and fall off the parts introduced from the opening 11a. It is configured to heat weld so that there is no. That is, the web S is formed into a bottomed bag by thermal welding of the vertical sealing means and the horizontal sealing means.

  Moreover, the said horizontal sealing means is equipped with the cutter which cut | disconnects the above-mentioned pinched web S in the width direction. As a result, the heat-welded part in the width direction is divided into upper and lower parts, the upper end of the bag falling downward can be closed and discharged as a single bag, and the web S positioned above is molded into a bottomed bag. Is done.

  The drive means includes an AC servomotor 25 which is an example of a rotational drive source, and a rotating member 20 that rotates as the AC servomotor 25 rotates. The AC servo motor 25 is connected to the control device 40, and is configured to rotate in response to a command from the control device 40. The rotating member 20 is directly connected to the AC servomotor 25 and receives the rotation of the drive roller 21 that rotates in the direction of feeding the web S downward as shown in FIG. The driving roller 21 includes a driven roller 22 that rotates in the opposite direction. Further, both the driving roller 21 and the driven roller 22 are formed in a columnar shape, and the outer periphery thereof is made of urethane rubber having characteristics larger than the frictional resistance of the coating film. The drive roller 21 is arranged so that the outer periphery thereof is in contact with the surface of one of the plate members 13, and the drive roller 21 and the driven roller 22 are connected to a single tension spring 23. Thereby, both the driving roller 21 and the driven roller 22 are always in contact with the surface of the plate 13. Therefore, when the web S passes through the plate material 13, the web S is pushed out by the outer periphery of the driving roller 21 and the driven roller 22 and is drawn downward while contacting the plate materials 13 and 13.

  In the present embodiment, the rotating member 20 includes the driving roller 21 and the driven roller 22. However, the present invention is not limited to this. For example, the web S is pressed against the plate member 13. It may be a rotating belt (not shown) that functions and rotates.

  The control device 40 is connected to the AC servomotor 25 and is capable of inputting rotation pulses of the AC servomotor. The control device 40 is connected to the AC servomotor control unit 41 and connected to the AC servomotor 25 in a predetermined manner. And a storage unit 43 for storing setting conditions such as the rotation speed and rotation time of the AC servomotor 25. In addition, the storage unit 43 is configured so that a setting device such as a personal computer 50 installed outside can be appropriately connected, and stores the setting conditions input by the setting device in advance.

  Next, the operation of the web feeding machine 1 according to the present invention will be described. The web S wound in a roll shape is turned into a sheet shape and is inserted into a gap between the guide plate 12 and the cylinder main body 11 and bent into a cylinder shape. Further, the web S is set so as to be sandwiched between the driving roller 21 and the plate material 13 as well as the driven roller 22 and the plate material 13.

  Here, the vertical sealing means and the horizontal sealing means are driven to thermally weld the web S, and the bottom portion of the bag thermally welded by the horizontal sealing means is cut so as to be vertically divided. Next, the control device 40 reads the setting conditions described above from the storage unit 43 and commands the rotation drive source 25 to rotate via the command unit 42 and the AC servo motor control unit 41. As a result, the web S formed in the bottomed bag is fed downward by a predetermined length. As a result, preparations for starting the packaging of the parts are completed.

  Next, a predetermined number of the parts are put into the opening 11a, pass through the part insertion passage 11b, and reach the bottom of the bag. In response to this, the vertical sealing means and the horizontal sealing means are driven to thermally weld the web S as described above. Further, since the lateral sealing means cuts the bag at the same time as the above-described heat welding, the bagging operation of the parts is completed and the bag-packed product is discharged downward.

  Thereby, the control device 40 rotates the rotation drive source 25 based on the setting condition as described above. At this time, the web S is pressed against the plate members 13 and 13 by the driving roller 21 and the driven roller 22 biased by the tension spring 23. However, a coating film 13b having a small frictional resistance is formed on the surface of each of the plate members 13 and 13, and the outer periphery of the driving roller 21 and the driven roller 22 is larger than the frictional resistance of the coating film 13b. It has great characteristics. As a result, the web S is less likely to slip on the outer periphery of the drive roller 21 and the driven roller 22, and conversely, the coating films 13 b and 13 b are less likely to slip, so that the drive roller 21 and the driven roller 22 are less likely to idle. There are advantages.

DESCRIPTION OF SYMBOLS 1 Web feeding machine 10 Cylinder part 11 Cylinder main body 13 Plate material 13b Coating film 20 Rotating member 21 Drive roller 22 Driven roller 25 Rotation drive source 40 Control device S Web

Claims (4)

A cylindrical portion that bends a web made of a resin material into a cylindrical shape, a driving means that feeds the web bent in a cylindrical shape along the direction in which the cylindrical portion extends, and a drive control that controls the driving means to determine the web. In a web feeding machine comprising control means for controlling to feed out,
The driving means comprises at least a rotating member that is rotatable along the extending direction of the cylindrical part and is in contact with the outer periphery of the cylindrical part, and a rotational driving source that imparts rotation to the rotating member,
The cylindrical portion is provided with a coating film having a small frictional resistance on the outer periphery thereof, and the web is sandwiched between the rotating member and the coating film, and is fed out quantitatively. The cylindrical portion includes a detachable plate arranged along the extending direction,
The web feeding machine according to claim 1, wherein the plate member is disposed so as to be in contact with an outer periphery of the rotating member, and the coating film is provided on a surface contacting the plate member.   3. The web feeding machine according to claim 1, wherein the coating film is made of a fluororesin.   4. The web feeding according to claim 1, wherein the rotating member is a driving roller that is formed in a cylindrical shape and has a frictional resistance set to be larger than that of the coating film. 5. Machine.

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