JP2009234707A - Suction roll and conveying device of conveying sheet using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction roll capable of eliminating a dimensional error of a carrying sheet by preventing wrinkles and bend of the carrying sheet and eliminating suction trace while restraining degradation of suction force of the entire suction roll by completely sucking and releasing the carrying sheet at a desired position. <P>SOLUTION: The suction roll 1 includes a plurality of suction holes 5 opened on the outer circumferential surface of a roll body 3 and sucking the carrying sheet, a negative pressure supply passage 9 formed along an axis of the roll body 3, communicated with the suction holes, and serving as a passage for supplying negative pressure, and a negative pressure releasing means releasing the negative pressure in the negative pressure supply passage. The suction holes 5 are formed to suck the carrying sheet 101, and to release the carrying sheet 101 by the negative pressure releasing means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a suction roll and a suction roll used for transporting various types of paper, resin films, metallic thin films, thin films, cloths, long sheets, transport sheets such as foam sheets and foam sheets in one direction. More particularly, the present invention relates to a suction roll used for transporting a bubble sheet or a foam sheet, and a sheet transport apparatus using the suction roll.

  2. Description of the Related Art Conventionally, a processing machine that cuts or manufactures a plastic sheet or the like has a pinch roll as means for feeding (conveying) the sheet. The pinch roll is pressed from a lower side of the conveying sheet with a certain pressure and is regulated or fed so as to be fed in the correct direction (desired direction). Since this pinch roll is easy to manufacture and can be manufactured at low cost, it has been generally used.

  However, if a transport sheet made of a highly stretchable material such as a bubble sheet or foam sheet is transported using a pinch roll, it will be pinched with a strong force, so the sheet itself will expand and contract due to its grip strength, reducing dimensional accuracy. The problem will arise. On the other hand, if the conveying sheet is to be conveyed with a weak pinching force, the conveying sheet slips on the pinch roll, making it difficult to convey the desired dimension.

  In particular, a transport sheet such as a bubble sheet or a foamed sheet is different from a smooth sheet, and has various thicknesses and shapes such as bubbles and foams. The shape of the bubbles (for example, round shape, heart star shape, etc.) ), A serious problem that the sheet slips on the nip roll due to unevenness and the like, and the rotation amount of the nip roll does not become the feed amount of a desired dimension, and an error occurs in a required product (so-called cut product, bag, etc.) was there.

  By the way, there is a suction roll as an alternative to such a pinch roll. In this suction roll, an infinite number of slits or holes are formed on the outer peripheral surface of a rotatable roll, and a conveying sheet is sucked or sucked (suctioned) into the slits or holes and conveyed (Patent Document). 1).

  However, with this suction roll, the area for suction (suction) is not limited, and suction is performed even in areas where it is not necessary, so there is a risk of reducing the suction force (suction force) in areas where suction is necessary. there were. That is, when the suction area is performed on the entire roll, there is a problem in that sufficient suction is not performed in the area that should originally be sucked (sucked), and as a result, the transport sheet is likely to slip. It may be possible to solve the problem by increasing the suction force (amount of suction) against such a problem. However, in order to increase the suction force, appropriate equipment is required, which increases the cost burden. It is not a sufficient solution.

  Therefore, there is a suction roll described in the following Patent Document 2. In the suction roll of Patent Document 2, the suction angle is adjusted from the viewpoint of sucking (air) from the peripheral surface portion of the roll main body that is not in contact with the conveyance sheet (not sucked) and preventing a reduction in the whole suction force. An exhaust hole that opens in a range is provided.

  Certainly, in the suction roll described in Patent Document 2, a certain result can be seen by providing an exhaust hole that opens in the range of the suction angle in terms of preventing a reduction in suction force (adsorption force). However, no disclosure has been made about the suction angle and the like, and the concreteness has been lacking. Furthermore, nothing is presented in terms of eliminating dimensional errors.

  As described above, none of the patent documents is still sufficient as a suction roll, and further improvement is desired.

Japanese Patent No. 2899226 JP 2006-36451 A

  The present invention has been made in view of such problems of the prior art, and the problem is that the suction of the entire suction roll is achieved by reliably releasing the suction of the transport sheet at a desired position. Provided are a suction roll and a transport device for a transport sheet using the suction roll, which can eliminate wrinkles and deflections of the transport sheet, eliminate dimensional errors of the transport sheet, and eliminate suction marks while suppressing a decrease in force. In particular, it can be suitably used for a bubble sheet and a foam sheet.

  As a result of intensive studies to achieve the above-mentioned problems, the present inventors have formed a plurality of holes on the outer peripheral surface of the roll body, formed along the axial direction of the roll body, suction holes capable of sucking the conveyance sheet, A negative pressure supply passage that communicates with the suction hole and serves as a negative pressure supply passage; and a negative pressure release means that releases the negative pressure of the negative pressure supply passage. The suction hole can suck the conveyance sheet. It has been found that the above-mentioned problems can be achieved by forming the conveyance sheet so as to be releasable by the negative pressure releasing means, and the present invention has been completed.

  That is, according to the present invention, there are provided a suction roll and a transport apparatus for a transport sheet using the suction roll, which will be described below.

[1] A plurality of perforations formed on the outer peripheral surface of the roll main body and capable of adsorbing the conveying sheet, and a negative pressure supply passage formed along the axial direction of the roll main body and communicating with the adsorption hole. A suction roll having a negative pressure supply passage and a negative pressure release means for releasing the negative pressure of the negative pressure supply passage, wherein the suction hole is formed to be capable of sucking the transport sheet. And a suction roll formed so as to be able to release the transport sheet by the negative pressure releasing means.

[2] When the suction hole is positioned in a range of 0 to 180 degrees with respect to the axis of the roll body by the rotation of the roll body, the transport sheet is formed so as to be sucked, and the roll body The suction roll according to [1], wherein the conveyance sheet is formed so as to be releasable by the negative pressure releasing means when positioned within a range of an angle of 180 to 270 with respect to the axis of the roll main body due to rotation of.

[3] The suction roll according to [1] or [2], which is formed to be capable of adjusting a negative pressure release amount of the negative pressure release means.

[4] The suction roll according to any one of [1] to [3], wherein the negative pressure release of the negative pressure release means is performed by sending outside air into the suction hole through the negative pressure supply passage.

[5] The suction roll according to any one of [1] to [4], wherein the transport sheet is a bubble sheet or a foam sheet.

[6] The suction roll according to any one of [1] to [5], a conveyance sheet supply unit that supplies the conveyance sheet to the suction roll, and a cutting that cuts the conveyance sheet conveyed from the suction roll. The suction roll is configured to be capable of interlocking with the transport sheet supply means and to be able to control the rotation of the roll body, and to transport a desired dimension by the rotation of the roll body. A transport apparatus for a transport sheet configured to be capable of feeding a sheet to a cutting means, wherein the cutting apparatus is configured to be able to cut a transport sheet sent from the suction roll.

[7] The cutting means includes a heat seal bar for fusing the conveyance sheet simultaneously with fusing, a seal cradle for receiving the conveyance sheet conveyed from the suction roll, and a pressing means for pressing the conveyance sheet to the seal cradle. [6] The transport apparatus according to [6], further comprising a press receiving base disposed to face the press means.

  The suction roll of the present invention reliably prevents the conveyance sheet from being wrinkled or bent while suppressing the decrease in the suction force of the entire suction roll by reliably performing the suction release of the conveyance sheet at a desired position. The effect of eliminating the adsorption marks can be achieved. In particular, it can be suitably used for a bubble sheet and a foam sheet.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described below, but the present invention is not limited to the following embodiment, and is based on the ordinary knowledge of those skilled in the art without departing from the gist of the present invention. It should be understood that modifications and improvements as appropriate to the following embodiments also fall within the scope of the present invention.

[1] Suction roll:
As shown in FIGS. 1 to 3, a plurality of suction rolls 1 of the present invention are formed in the outer peripheral surface of the roll body 3, and suction holes 5 that can suck the conveyance sheet 101, and an axis 7 of the roll body 3. A negative pressure supply passage 9 formed along the direction and communicated with the suction hole 5 and negative pressure release means (see reference numeral 18 in FIG. 6A) for releasing the negative pressure of the negative pressure supply passage 9 are provided. . The suction holes 5 are formed so that the transport sheet 101 can be sucked, and the transport sheet 101 can be released by the negative pressure release means 18.

[1-1] Roll body:
The roll body constitutes a part of the suction roll, and is formed to be rotatable in conjunction with the rotation of the axis (rotation shaft) of the suction roll. This roll main body conveys and guides the cutting sheet, which is the next step, while adsorbing a conveying sheet such as a long sheet on the surface of one drive roll. In particular, it is suitable for transporting a transport sheet such as a bubble sheet or a foam sheet. In addition, the code | symbol Y shown by FIG. 2 shows the rotation direction of a roll.

  As shown in FIGS. 1 to 3, the roll body 3 has a plurality of suction holes 5 formed on the outer peripheral surface thereof, and the negative pressure supply passage 9 is formed along the width direction (axial direction) of the roll body 3. It is installed. Here, the suction roll may be configured such that the rotation shaft, both ends of the roll main body, and the like are integrally formed with the roll main body, or the roll main body may be formed as a separate body as shown in FIGS. However, as shown in FIGS. 1 to 3, both ends of the roll body are formed separately as they are formed separately, and are easier to adjust in terms of roll rotation control, etc. Is more preferable.

  As shown in FIGS. 1 to 3, when the roll main body 3 is configured as a separate body, the roll main body 3 has an end 4 composed of one end 4 a and the other end 4 b, and the length of the roll main body 3. A rotating shaft 7 of the roll body 3 is provided in the direction. The roll body is configured to be rotatable about the rotation axis (axis) by the rotation of the rotation axis 7 (axis). Note that side plates 17 are provided at both ends of the roll body so as not to rotate (rotate) in accordance with the rotation of the shaft center and the rotation of the roll body. This side plate will be described later.

  The shape of the roll body 3 is preferably formed in a columnar shape or a cylindrical shape. This is because it is easy to convey the conveyance sheet, and it is easy to attract the conveyance sheet to the desired position on the outer peripheral surface of the roll body with a uniform force. If uniform suction force cannot be supplied, it is not preferable because slip or the like is likely to occur at a part of the outer peripheral surface of the roll body when the transport sheet is transported. In addition, although it is easy to take the arrangement space of the passage for negative pressure supply and can be made light weight, there is an advantage in the cylindrical shape. However, in the cylindrical shape, the roll main body can be rotated according to the rotation of the rotation shaft and the rotation member. Etc., and the number of parts increases accordingly. Therefore, it is preferable to use them according to the dimensions and shape of the transport sheet.

  As the size (dimensions) of the roll body, those having a diameter of about 90 to 500 mm and a length of about 1 m to 6 m are generally used, but not limited to such dimensions, Any size (dimension) suitable for manufacturing is included in the dimensions of the roll body of this embodiment.

  Examples of the material of the roll body include metals such as aluminum and zinc or alloys thereof, phenol polymers, vinyl chloride polymers, ethylene polymers, imide polymers, amide polymers, and carbonate polymers. Molded by extraction molding. In particular, aluminum is lightweight and has a small moment of inertia, so that there is an advantage in that the response is quick when stopping or rotating.

[1-1-1] Regarding the dimension adjustment of the conveyance sheet:
The suction roll is configured to be able to control the rotation of the roll body. The reason why the roll body can be controlled to rotate is to cut a desired dimension after a suction process in which the transport sheet is sucked and the transport sheet is moved to a desired position. That is, by controlling the roll body so as to be able to rotate as desired, the roll body rotates by a desired amount of rotation. Thus, the conveyance sheet adsorbed on the roll body moves on the roll body by the distance (size) the outer peripheral surface of the roll body moves, or moves away from the rotating roll and flows toward the cutting process (moves). Therefore, by controlling the rotation of the roll body, the desired dimensions of the transport sheet can be controlled (prepared).

  Further, the suction roll is configured such that the rotation of the roll body can be temporarily interrupted (can be stopped) after the transport sheet has moved by a desired dimension. If the roll body continues to rotate, the conveying sheet will continue to flow (move), and the cutting in the cutting process will not be in time or complicated, thus eliminating these possible problems. That is, by allowing the rotation of the roll body to be intermittently adjusted (controlled), when the cutting means is cutting the transport sheet, the rotation of the roll body is stopped and the cutting is appropriately performed. It is possible to prevent the transport sheet from bumping between the suction roll and the cutting means.

  In this way, the suction roll is adjusted for the size of the conveying sheet. In other words, the size of the conveying sheet, especially the bubble sheet, is not expanded or reduced when the size adjustment is not performed on the raw roll serving as the starting point of the conveying sheet. There is a situation where it is easy to maintain accurate dimensional accuracy, and if the travel distance (distance) of the transport sheet from the raw roll to the suction roll is long, the variation in expansion and contraction becomes large and dimensional errors are likely to occur. This is to prevent such an adverse effect by adjusting the dimensions. Moreover, the reason why the size is not adjusted by the cutting means is that the cutting process is easily complicated and the cutting accuracy is likely to be lowered. The fact that cutting such as cutting of the transport sheet is unsatisfactory is a major factor that degrades the quality of the product. Therefore, the cutting means should not perform processing other than cutting as much as possible. Therefore, the dimensions are adjusted in the suction roll conveyance process, which is immediately before the cutting means.

  As will be described later, the roll body and the transport sheet supply means are linked to facilitate transport and cutting, and damage the transport sheet by preventing unwanted expansion and contraction as much as possible. This is to avoid giving For example, by interlocking as described above, while the rotation of the roll body is temporarily stopped, a new transport sheet is not supplied from the original fabric roll to the suction roll, and between the supply means and the suction roll. It is possible to prevent the transport sheet from becoming loose.

  9 and 10 are diagrams schematically showing the flow of the transport sheet when a suction roll is disposed between the original fabric roll 103 and the cutting means. For example, as shown in FIG. 9, when the conveyance sheet adsorbed on the roll body moves between the original roll and the suction roll by the rotation of the roll main body, the original roll is moved in accordance with the movement. The conveyance sheet wound around the sheet may be pulled and rotated so that a new conveyance sheet is sent out. That is, a moderate tension is applied to the transport sheet between the original fabric roll and the suction roll, and when the suction roll rotates, the transport sheet is sent out. Note that the symbol R indicates the flow direction of the transport sheet.

[1-2] Axle (rotating axis):
The roll body is configured to be rotatable according to the rotation of the axis (rotating shaft). For example, as shown in FIG. 2, the shaft center is provided so as to penetrate the roll body 3 and the side plate 17, and can be rotated by a bearing (not shown) such as a bearing (not shown). Installed. The shaft center may be formed integrally with the roll main body, or may be connected to the roll main body after being formed as a separate body and connected so that the roll main body can be rotated according to the rotation of the shaft center. Good. Moreover, although this axial center may be formed from the same raw material as a roll main body, it is not restricted to those raw materials, You may form from a well-known raw material. Furthermore, the shape of the shaft center is not particularly limited as long as the roll body can be easily connected and can be rotated.

[1-3] Adsorption hole:
A plurality of suction holes are formed along the outer peripheral surface of the roll body, as shown in FIGS. The number of suction holes formed on the outer peripheral surface of the roll body varies depending on the shape, opening shape, opening size, etc. of the suction hole, or the suction force, and the size (dimension) of the roll body. However, it is preferable that the outer peripheral surface of the roll body is formed evenly (equally spaced) so as not to be attracted at least so as to easily adsorb the transport sheet. This is because if the suction holes formed on the outer peripheral surface of the roll main body are uneven, there are places where it is easy to suck the transport sheet in the desired area and places where it is difficult to suck, and this is not preferable in terms of transportability. The suction hole may be formed using a drill, laser light, or the like.

  In general, when the roll body has a diameter of 90 to 500 mm and a length of about 1 to 6 m, about 6000 to 200,000 are often formed on the outer peripheral surface. However, it is not limited to this number.

  Further, the shape of the suction hole is not limited to the word and phrase, and may be any shape that can easily suck the transport sheet or that can easily release the transport sheet at a desired position after suction. Hole-shaped ones such as a groove, a U-shaped groove and a U-shaped groove.

  For example, in FIG. 4, the suction hole 5 is formed as a low and low shape having a substantially trapezoidal shape in cross section. However, the suction hole 5 is not limited to such a bottomed shape, and negative pressure is supplied without forming a bottomed shape. You may penetrate to the passage 9 for use. When the suction hole 5 communicates with the negative pressure supply passage 9 formed along the axial direction of the roll body in this way, the air is decompressed and vacuumed into the suction hole 5 through the negative pressure supply passage 9. It will be in a state and can convey a conveyance sheet.

  Here, as a communication method when the suction hole and the negative pressure supply passage are integrally formed, in the case of a cylindrical roll body, for example, negative pressure is supplied in the length direction (axial direction) of the roll body. It is advisable to penetrate the service passage. Furthermore, suction holes such as slits are integrally formed in the roll body so as to be perpendicular to the axis of the roll body and perpendicular to the negative pressure supply path. Moreover, even if it is cylindrical, if it forms the outer peripheral surface of a roll main body thickly, it can form similarly to a column-shaped roll main body.

  Further, in the case of being configured as a cylindrical roll body having no wall thickness (or thin wall), suction holes such as slits are formed, and the cylindrical roll body is tubular in its length direction. A negative pressure supply passage may be arranged, and a small through hole that connects (communicates) the suction hole and the negative pressure supply passage may be provided. For example, as shown in FIG. 4, small through holes 11 (11 a, 11 b, 11 c, 11 d) are provided in the bottom wall 5 a of the suction hole 5, and the bottom wall 5 a of the suction hole 5 extends to the axis 7 of the roll body 3. It may be formed by extending toward the negative pressure supply passage 9. However, when using a cylindrical roll body with no wall thickness (or a thin wall), the molding process is complicated and it is necessary to adjust the sealing property (shield) to create a vacuum. There are also many disadvantages over the roll body described above. Therefore, a roll body made of a columnar shape and a roll body made of a thick cylindrical shape are more preferable.

  Further, an area (hereinafter referred to as “vacuum zone”, which is appropriately referred to as a “vacuum zone”, and denoted by reference numeral V) for suctioning the conveyance sheet to the suction hole is formed according to the rotation direction of the roll body, the conveyance sheet flow direction (flow process), and the like. It is preferable. For example, as shown in FIGS. 1 and 9, there is a case where the transport sheet 101 is slid (moved) in the horizontal direction to be transported from the suction roll 1 as shown in FIGS. When such a flow process is adopted, the flow process is configured as a flat surface, but it is necessary to secure an installation space. However, it is preferable because it has an advantage of easy maintenance. Further, for example, as shown in FIG. 10, when the transport sheet 101 is transported from the suction roll 1 in a so-called vertical direction, or the transport sheet is slid in the horizontal direction shown in FIG. Instead, there are various things such as a case where the suction roll is turned as a base point for turning back to move the conveying sheet in a U shape (not shown). When these flow processes are employed, the flow process is configured in a three-dimensional manner, but there is an advantage that it is not necessary to secure a wide space. As described above, it is preferable that a vacuum zone is formed in a desired range of the suction roll according to the installation state of the suction roll, the rotation direction of the roll body, the flow direction of the transport sheet, and the like.

  However, it is more preferable that the vacuum zone is formed in a desired range as described below, which can reliably adsorb the conveyance sheet and does not cause a dimensional error.

  For example, when the conveyance sheet is conveyed by sliding (moving) in the horizontal direction, when the suction hole is positioned in a range of 0 to 180 degrees with respect to the axis of the roll body due to the rotation of the roll body, It is preferable that the conveyance sheet is formed so as to be sucked. In this case, the suction holes are formed over the entire outer peripheral surface of the roll body, but the conveying sheet is sucked (sucked) at a position of 0 to 180 degrees with respect to the axis of the roll body. is there. On the other hand, if the suction range (vacuum zone) is larger than the position of 0 to 180 degrees, a dimensional error of the transport sheet is likely to occur. In other words, even if the transport sheet moves away from the suction roll and reaches a position to be moved to the cutting process, the transport sheet is attracted to the suction roll, and as a result, the transport sheet is bent and twisted, and the subsequent sheet is sent out. A dimensional error will occur.

  Further, for example, when the transport sheet is transported by moving in the vertical direction, a range of 0 to 180 degrees with respect to the axis of the roll body is preferable. As described above, it is preferable because control can be performed so as not to cause an error in the sheet feeding dimension.

  Further, for example, in the case where the conveyance sheet is turned and moved in a U shape using the suction roll as a base point of folding without sliding the conveyance sheet in the horizontal direction, The range is 180 degrees. As described above, it is preferable because control can be performed so as not to cause an error in the sheet feeding dimension.

  The reason why the vacuum zone has a certain width as described above is to ensure that the transport sheet is attracted to the roll body. When negative pressure is supplied and the conveyance sheet is adsorbed to the suction hole, the grounding surface of the suction hole and the conveyance sheet is in a vacuum state or a reduced pressure state close to a vacuum state. Depending on the conveyance sheet, a range in which the negative pressure is supplied Even if it does not have, it can be adsorbed for a certain amount of time, but if the conveyance sheet is accidentally separated from the outer peripheral surface of the roll body or the adsorbed state becomes unstable, it will cause dimensional errors such as warping and deflection, The negative pressure was supplied within a certain range so that it can be reliably conveyed.

  In addition, even when the conveyance sheet does not need to be sucked (adsorbed), if negative pressure is supplied to the suction hole via the negative pressure supply passage, there is no so-called lid of the conveyance sheet, so the suction hole is opened. The outside air is constantly taken in from the club. Thus, there occurs a situation in which the negative pressure is not sufficiently supplied to the suction holes to be supplied with negative pressure. As a result, the suction force of the suction holes is weakened (decreased), and the conveyance sheet may not be reliably sucked. . As a method of compensating for the reduced adsorption force, it is conceivable to increase the negative pressure supply amount, but an excessive facility such as a further power source is required, which may cause a vicious circle (bad effect). Therefore, it is preferable to control the suction location to the desired angle as described above.

  Here, instead of providing the above-described desired suction location (vacuum zone), a method is also conceivable in which a shield is provided in suction holes located outside the vacuum zone so that the transport sheet is not sucked (released). However, when such a method is employed, the sucked (sucked) conveyance sheet is sucked in the suction hole and in a vacuum state, so that suction (sucking) is difficult to be immediately released (released). In addition, a conveyance sheet that does not easily cause wrinkles or twists may be used, but a conveyance sheet such as a bubble sheet or a foam sheet is often made of a material that is likely to cause wrinkles or twists. Therefore, even if the above-described shielding object is provided, the shielding object is caught, bent, kinked, or the conveyance sheet is damaged. For this reason, since it is far from eliminating the dimensional error, it is not desirable to shield a portion where suction is not desired with a shielding object or the like.

  Further, an area in which the suction hole that sucks the transport sheet allows the transport sheet to be released (hereinafter, referred to as “negative pressure release zone” as appropriate, indicated by Z) is the end of the aforementioned vacuum zone V or the vacuum zone. It is preferable to be provided in the area after (after the vacuum zone). This is because the transport sheet after being vacuumed can be released.

  The area (negative pressure release zone Z) in which the conveyance sheet can be released is formed according to the installation state of the suction roll such as the rotation direction of the roll body and the flow direction of the conveyance sheet, and further, the formation position of the vacuum zone. It is preferable. For example, as shown in FIGS. 1 and 9, when transporting a transport sheet by sliding (moving) in the horizontal direction, although not strictly, the transport sheet is so-called vertical as shown in FIG. In the case of conveying, or without conveying the conveying sheet by sliding in the horizontal direction as shown in FIG. 1, the conveying sheet is turned and moved in a U-shape with the suction roll as the starting point of folding ( This is for facilitating the release of the conveying sheet depending on the situation.

  More preferably, when the conveyance sheet is conveyed by sliding (moving) in the horizontal direction, the suction hole is positioned within a range of 180 ± 270 degrees with respect to the axis of the roll body due to the rotation of the roll body. The negative pressure release zone is formed so that the transport sheet can be released. Even if the conveyance sheet adsorbed in the adsorption hole passes the vacuum zone, the grounding surface (adsorption surface) in contact with the conveyance sheet and the adsorption hole is in a so-called vacuum state or at least a reduced pressure state, and the roll The “separation” between the main body (suction hole) and the conveyance sheet is worse. Such bad separation causes a warp and the like, and as a result, an error occurs in the delivery size of the conveyance sheet from the suction roll to the cutting process. Therefore, the sucked conveyance sheet can be reliably released at the above-mentioned desired position (desired angle), and the occurrence of deflection or deflection of the conveyance sheet which causes a dimensional error is prevented.

  As a method for making the transport sheet releasable, for example, as shown in FIG. 5, when the suction hole 5 moves to the desired position, a negative pressure release in which a slit capable of taking in outside air (air) is formed. It may be performed by connecting (communication) the means 19 and the negative pressure supply passage 9. By communicating in this way, outside air is taken into the suction hole 5 communicating with the supply passage via the negative pressure supply passage 9 (from the slit). That is, the sheet is supplied to the suction hole 5 via the negative pressure supply passage 9 and the transport sheet 101 can be released (released). Therefore, the vacuum state or reduced pressure state of the suction hole is relaxed or released (released), and the transport sheet is separated from or easily separated from the suction hole. However, it is not limited to such a specific example.

  Further, as a method for making the transport sheet releasable, when the suction hole moves to the negative pressure release zone, air (taken outside air) may be applied from the suction hole to the transport sheet side. One of the preferred forms. When air (outside air) is sent from the negative pressure release means to the suction hole through the negative pressure supply passage, and the air hits the transport sheet, the suction between the transport sheet and the suction hole can be easily released, and the transport sheet Since it becomes easy to leave | separate from a roll main body, it is preferable.

  However, if this amount of air hits (the amount of jets) is large, the transport sheet will rise above the roll more than necessary, causing new twists and deflections, so the amount of air jets can be adjusted. preferable.

  Moreover, it is also one of the preferable forms to wind a wire etc. on the adsorption | suction hole, ie, the outer peripheral surface of a roll main body (winding helically). If the surface of the suction hole (the outer peripheral surface of the roll body) is covered with the wire in this way, it becomes difficult for the transport sheet to have suction marks, and furthermore, the surface of the transport sheet can be prevented from being damaged (damaged). is there.

  Even if the surface of the suction hole is covered with a wire or the like, an infinite number of fine holes are formed between the wire and the wire (gap), so that the transport sheet is sucked through the gap. Furthermore, it is preferable to wind by adjusting (interval) between the wires.

  Examples of the wire include nets made of rubber, nylon, urethane and the like, wires, and the like.

  In addition, when the wire rod is wound in this manner, the negative pressure generating means (intake device) is operated and the rotation shaft connected to the drive source is rotated, so that the outer peripheral surface of the roll body covers the suction hole. The air is sucked from the gap of the wire wound around the wire, and the conveying sheet such as a long sheet is adsorbed on the surface of the wire.

[1-4] Negative pressure supply passage:
As shown in FIGS. 2 and 3, the negative pressure supply passage in the present embodiment is formed along the axis 7 direction of the roll body 3 and is formed so as to communicate with the suction hole 5. The negative pressure supply passage 9 is provided along the width direction (axial direction) of the roll body 3 to supply negative pressure by communicating with the suction holes 5 provided on the outer peripheral surface of the roll body 3. This is to make it possible. The negative pressure supply passage may be formed, for example, in a penetrating manner in the axial direction of the roll body, and may be formed by arranging tubular members (see 11a to 11d in FIG. 4) that can serve as a negative pressure supply path. May be.

  However, it is more preferable to form the negative pressure supply passage by forming the outer peripheral surface of the roll body to be thick to some extent. This is because when communicating with the suction holes, the number of parts is reduced and the suction holes can be formed at low cost.

  In addition, it is not restricted to such a formation method, it can supply a negative pressure to the suction hole, and it is formed along the axial direction of the roll body and is formed so as to communicate with the suction hole. In the case of the supply passage, it can be used as a negative pressure supply passage in the present embodiment.

  In addition, the position where the negative pressure is fed into the vacuum zone from the negative pressure supply passage, that is, the position where the vacuum zone is formed is such that the suction hole communicating with the negative pressure supply passage is 0 to the axis of the roll body. It is preferably formed when positioned at 180 degrees. More preferably, the suction hole communicating with the negative pressure supply passage is formed when the suction hole is positioned in an angle range of 90 to 180 degrees with respect to the axis of the roll body. As shown in FIG. 1, the negative pressure supply passage supplies negative pressure to the suction holes when the suction holes move to a desired position (vacuum zone V). Here, on the outer peripheral surface of the roll body, there is an adsorption hole that does not necessarily adsorb the conveyance sheet. In other words, the suction roll of this embodiment does not roll the conveyance sheet, but adsorbs it to a part on the outer periphery of the roll body and conveys it to a desired area. In the through-hole formed in the main body, a conveyance sheet is not attracted (see FIG. 1). Therefore, the negative pressure is not supplied to the suction hole, and when the suction hole is located at the desired angle, the negative pressure is supplied from the negative pressure supply passage communicating with the suction hole. Therefore, it is preferable that the transport sheet is formed so as to be reliably transported.

  If the negative pressure is continuously supplied to all the suction holes including the suction holes in the place where the transport sheet is not sucked, the place where the transport sheet is not sucked (suction hole) will be open to the outside air. The vacuum state (or reduced pressure state) cannot be achieved, and the state is open. From such an open suction hole, there is no so-called lid, so outside air continues to be taken in, and it is not possible to sufficiently supply a negative pressure to a required location. Furthermore, in order to supply sufficient negative pressure to places where the negative pressure is insufficient, it is necessary to increase the amount of negative pressure generated by the negative pressure generating means, or it is difficult to adjust the negative pressure because the negative pressure is increased. As a result, suction marks remain on the transport sheet or dimensional errors occur. Therefore, it is preferable that the negative pressure generating means is configured to be connectable at a desired position.

  As a method for enabling such a vacuum zone, for example, the connection port 13 is provided in a region provided on the inner surface of a side plate, which will be described later, as shown in FIG. It is done. With this configuration, when the negative pressure generating means is connected to the connection port, and the negative pressure supply passage is connected (connected) to the connection port while communicating with the suction hole located in the vacuum zone. Can supply negative pressure.

  Moreover, it is preferable that outside air (or air) is difficult to enter the above-described region except for a connection port for connecting to the negative pressure generating means and an opening communicating with the negative pressure supply passage. This is because if the outside air or the like easily enters, the negative pressure is not sufficiently supplied and the suction of the transport sheet is affected. Specifically, a groove may be provided inside the side plate, and a connection port may be provided in front of the side plate. If formed in this way, the negative pressure supply passage for the groove of the side plate becomes a cover of the groove, so that air enters the vacuum zone from the side plate (from the inside of the roll body). It becomes difficult. That is, it becomes easy to control the suction. Furthermore, since negative pressure generating means is connected to the connection port provided in the side plate, it is still impossible to take in outside air. Therefore, the vacuum zone is depressurized and further evacuated by the negative pressure generated by the negative pressure generating means. When communicating (connected) with the negative pressure supply passage, negative pressure is supplied. It becomes possible to supply into the service passage.

  When the suction hole moves to a position of 0 to 180 degrees with respect to the axis of the roll body, the negative pressure supply passage also preferably moves to a position of 0 to 180 degrees with respect to the axis of the roll body. . The negative pressure supply passage is formed so as to penetrate through the suction hole and is installed (or formed) in the axial direction of the roll body, so the negative pressure supply passage is also on a straight line from the shaft center to the suction hole. This is because they are preferably arranged.

  The above-described vacuum zone is an example, and is not limited to the negative pressure supply passage according to the configuration of such a vacuum zone. Negative pressure is supplied from negative pressure generating means provided outside. Since the effect of the present application can be obtained as long as it is formed so as to be able to be supplied to the use passage and to be fed into the negative pressure supply passage and thus to the suction hole, it is included in the vacuum zone in the present embodiment.

  As shown in FIG. 3, as a method for connecting the negative pressure generating means and the negative pressure supply passage, the negative pressure generating means 15 can be connected to at least one end of the roll body (both ends of the roll body in FIG. 3). A connection port 13 is preferably provided. Further, the negative pressure supply passage 9 can be connected to the connection port 13 according to the rotation of the roll body 3, and the negative pressure supply passage 9 is connected from the connection port 13 by rotating the roll body. It is preferable to be formed so as to be detached.

  Also, connection ports 13a and 13b are provided at both ends of the roll body so that it is easy to supply negative pressure equally to the suction holes located in the vacuum zone, and they are formed so that they can be connected to the negative pressure generating means 15a and 15b, respectively. More preferably (see FIG. 3). In connection with only one end, it is difficult to supply negative pressure to the suction hole located on the other end side, so it is preferable that the connection is provided at both ends so that negative pressure can be reliably supplied.

  Thus, when the connecting method of the negative pressure generating means and the negative pressure supply passage is configured, the roll main body rotates and the negative pressure supply passage 9 that is detached (moved) from the connection port 13 is connected to the roll main body 3. Is further rotated and returned (moved) to the position where the connection port 13 is provided again, it can be rotated once and connected to the connection port 13 again. Therefore, negative pressure is supplied to the suction hole through the connection port 13.

  Further, the position where the negative pressure supply passage is connected to the connection port may be any position as long as suction can be appropriately performed in the vacuum zone. For example, the one at the end of the vacuum zone as shown in FIG. 7A or the one at the beginning of the vacuum zone as shown in FIG. 7B can be mentioned. As described above, since the position of the connection port can be formed at a desired position, it is possible to flexibly cope with problems such as the arrangement space of components.

  However, when a connection port is provided at the end or start of the vacuum zone, it is preferable to improve the sealing performance in the vacuum zone. Without sealing, if the connection port is at the end of the vacuum zone, there is not enough suction near the beginning of the vacuum zone, and if the connection port is at the beginning of the vacuum zone, near the end of the vacuum zone This is because the suction at this point is not sufficient, and eventually an error of the conveyance sheet may occur.

  More preferably, the suction hole is preferably located at a position of 180 to 270 degrees with respect to the axis of the roll body, and more preferably, the suction hole is located at a position in the range of 90 to 180 with respect to the axis of the roll body. is there. This is because the conveying sheet can be suctioned efficiently and reliably with a small negative pressure, and dimensional errors can be easily controlled.

[1-5] Negative pressure release means:
The negative pressure releasing means is provided to release the negative pressure of the conveying sheet sucked by the suction hole. Specifically, negative pressure releasing means such as a slit is provided at one end (or both ends) of the roll body. As an example. In addition, when the suction hole rotates and moves (moves) to the negative pressure release zone, it may be brought into contact with the slit, etc., and the negative pressure supply passage may be exposed to the outside air to release the negative pressure. Alternatively, the negative pressure may be released by sending outside air into the negative pressure supply passage.

  In this way, by forming the negative pressure releasing means, for example, when the suction hole rotates and moves to a desired position, the negative pressure supply passage communicates (connects) with the negative pressure releasing means. Since there is a difference in atmospheric pressure between the outside air and the negative pressure supply passage, the air is taken into the negative pressure supply passage from the negative pressure release means as if the ventilation hole is assigned by this communication. That is, the negative pressure is released, and the transport sheet is easily separated from the roll body (suction hole). Therefore, there is no sagging or more of the sheet at a predetermined position, so that a dimensional error is hardly generated and the effect of the present invention can be achieved.

  Moreover, it is preferable that the position where the negative pressure is released from the negative pressure releasing means via the negative pressure supply passage is formed to be a position after the vacuum zone. That is, even if the negative pressure is released via the negative pressure supply passage before the vacuum zone, the conveyance sheet is not adsorbed. In addition, even if the negative pressure is released via the negative pressure supply passage in the vacuum zone where the conveyance sheet is not sufficiently adsorbed, adsorption of the conveyance sheet is hindered, and further, the conveyance sheet is moved to an appropriate position. It is because there exists a possibility of inhibiting conveyance.

  As the negative pressure releasing means, for example, as shown in FIG. 5, a slit 19 may be provided at one end of the roll body (one end of the side plate 17), and the negative pressure releasing means 18 may be configured. When the negative pressure supply passage moves to the slit position along with the rotation of the roll body, the slit is opened to the outside air, so the outside air is taken into the negative pressure supply passage from the slit, and further, the negative pressure supply passage The negative pressure of the suction hole is released through the passage. Therefore, the conveyance sheet is easily separated from the suction hole.

  The negative pressure releasing means is preferably formed so that the negative pressure releasing amount can be adjusted. The sheet separation is not uniform depending on the shape of the transport sheet. An appropriate negative pressure release amount for a certain sheet shape may not be an appropriate negative pressure release amount for another sheet. In particular, in the foam sheet and the foam sheet, the sheet-like structure that encloses the foam and foam tends to bend and twist, and easily cause a dimensional error. Therefore, it is necessary to control the release of suction to the suction holes by setting an appropriate amount of negative pressure release. As the adjustment of the release amount, in the case of the slit as shown in FIG. 5, for example, a lid (plug) that covers the slit from the outside air direction, and the lid can be slid with respect to the end surface of the roll body. It is good to form. Furthermore, the amount of release can be easily adjusted by making slide adjustment possible.

  Further, it is preferable that the negative pressure releasing means is formed so as to be connectable with an air feeding means (not shown). It is difficult to immediately reduce the negative pressure in the negative pressure supply passage and also in the suction hole only by opening to the outside air such as a slit or simply releasing the negative pressure using the difference in atmospheric pressure from the outside air. (It is difficult to release). Therefore, the conveyance sheet can be easily released by making it possible to connect air (outside air) to the negative pressure supply passage and further to the air feeding means capable of feeding the suction hole.

  In addition, if the amount of air (outside air) is excessively strong, the transport sheet will rise more than necessary due to the air that is sent in, causing deflection and warping, which may cause dimensional errors. It is preferable that it is adjustable.

[1-6] Negative pressure generating means:
The negative pressure generating means serves as a generation source for supplying a negative pressure to the suction hole via the negative pressure supply passage. The negative pressure generating means includes, for example, a vacuum pump, an exhaust blower, and the like. If the negative pressure can be supplied as the negative pressure supply device, it is included in the negative pressure generating means in the present invention. Such negative pressure generating means is preferably configured to be connectable to at least one end of the roll body. However, it is not limited to such a configuration, and may be installed in the roll body. From the viewpoint of ease of molding (arrangement), processing cost, etc., it is more preferable to be connected to an external negative pressure generating means.

  In the case where the negative pressure generating means is installed outside, for example, as shown in FIG. 2, if the negative pressure generating means 15 is connected to the connection port 13 to supply negative pressure, the convenience is improved.

  As shown in FIG. 2, it is preferable to connect the negative pressure generating means 15 by providing connection ports 13 a and 13 b at both ends of the roll body. Inhalation force on the entire outer peripheral surface, particularly on one side, is not constant at the edge portion and the central portion, and may be non-uniform, and conveyance of a conveyance sheet such as a long sheet becomes non-uniform. That is, a dimensional error is likely to occur. Therefore, it is preferable that the connection ports 13a and 13b are arranged on both sides of the roll body so as to be connectable to the negative pressure generating means 15.

[1-7] Side plate:
The side plates are respectively attached to both ends of the roll body with a constant pressure via biasing means. By attaching the side plate in this way, the side plate may be arranged so as not to rotate in accordance with the rotation of the rotation shaft (shaft or axis) provided so as to penetrate the roll body. it can. Therefore, the connection location (connection port) provided when the negative pressure generator is externally installed, the negative pressure releasing means such as the slit for releasing the negative pressure, etc. are combined together according to the roll body or the roll axis. It is possible to avoid so-called rotation that rotates.

  Specifically, as shown in FIG. 3, the roll body 3 is attached to the roll body by a roll body 3, a rotating shaft 7 (shaft, shaft center) provided so as to penetrate the roll body 3, and a biasing means 21 such as a spring. A pair of side plates 17 that are urged toward each other and are respectively brought into contact with both ends of the roll body at a constant pressure are provided. The rotating shaft 7 is supported by a bearing (not shown).

  At least one of the side plates 17 is provided with a connection port 13 communicating with the negative pressure generating means 15 and a negative pressure releasing means 18. Further, when air feeding means is used as means for feeding outside air into the suction hole 5 via the negative pressure supply passage 9, it is preferable to provide a connection port with the air feeding means.

  As described above, the connection port of the side plate is configured to be connectable to an external negative pressure generating means, and is configured to be connectable (communicable) to the negative pressure supply passage. The connection (communication) to the negative pressure supply passage is made possible. If the negative pressure supply passage is continuously connected, negative pressure is continuously applied to the suction hole through the negative pressure supply passage. This is because the conveyance sheet can be adsorbed in the range, and the conveyance sheet cannot be released in the desired range. That is, the conveyance sheet continues to be adsorbed to the adsorption holes, causing kinking, bending, bumping, and the like, resulting in dimensional errors. Therefore, by enabling connection (communication) to the negative pressure supply passage, negative pressure can be supplied to the suction hole through the negative pressure supply passage within a desired range.

  Specifically, as shown in FIG. 3, when the suction hole 5 is positioned at an angle of 180 to 270 with respect to the axis 7 due to the rotation of the roll body 3, the suction hole 5 communicates with the negative pressure generating means 15. The connection port 13 and the negative pressure supply passage 9 communicate with each other, and the air in the suction hole 5 is sucked from the negative pressure generating means 15 through the connection port 13 and the negative pressure supply passage 9. Here, when the conveyance sheet is not adsorbed to the suction hole 5, there is nothing to block the adsorption hole 5. However, if the conveyance sheet covers (closes) the surface of the adsorption hole 5, it is as if it is conveyed. The sheet serves as a lid for the suction hole, and the air in the suction hole is depressurized to be in a vacuum state. That is, the conveyance sheet is adsorbed.

  The connection port of the side plate may continue to be supplied with external air from an external negative pressure generating means, unlike the negative pressure supply passage. This is because even if negative pressure is continuously supplied from the negative pressure generating means, the negative pressure supply passage can be connected (communication) to adjust the negative pressure supplied to the vacuum zone. In other words, only the negative pressure supply passage communicating with the suction hole to which negative pressure is to be supplied is connected to the connection port and not connected to the negative pressure supply passage communicating with the suction hole not located in the vacuum zone. .

  Here, the side plate will be specifically described with reference to FIGS. 6A, 6B, and 8. 6A schematically shows a front view of the side plate, and FIG. 6B schematically shows an inner side of the side plate (axial direction when attached to the suction roll). Further, FIG. 8 is a diagram schematically showing a cross section of the side plate. For convenience of explanation, grooves and the like provided in the side plate are omitted.

  As shown in FIGS. 6A, 6B, and 8, the side plate 17 has a rotation shaft insertion port 33, and the rotation shaft (shaft center) of the suction roll is passed through the rotation shaft insertion port 33. The roll body is formed to be rotatable. Further, the side plate 17 is provided with a vacuum zone V for supplying negative pressure and a connection port 13 in a negative pressure supply passage communicating with the suction hole located in the vacuum zone V. The vacuum zone V and the negative pressure release means 15 are preferably formed apart from each other in order to ensure the sealing performance of the vacuum zone. Even in the case where it is formed in the vicinity, providing a sealing property with a sealing member or the like is one of the preferred embodiments because the negative pressure can be supplied smoothly. In FIG. 8, the negative pressure release means 15 is formed in a groove shape, but is not limited to this shape, and is capable of releasing negative pressure by taking in outside air, such as a slit, a round hole shape, or a star shape. If it is a thing, it is contained in the negative pressure release means in this embodiment.

  As shown in FIG. 6A, the connection port provided on the side plate that can be connected to the negative pressure supply device is provided at the end of the vacuum zone (the vacuum zone that is farthest from the rotation direction). Good.

  Furthermore, it is preferable that connection ports are provided on both of the side plates attached to the roll body so that negative pressure can be supplied from the two connection ports into the negative pressure supply passage. This is because the negative pressure can be uniformly supplied to all the suction holes in the desired region, and partial suction of the transport sheet can be avoided.

  Further, when the outside air is sent to the negative pressure releasing means using the air feeding means for sending outside air, it is preferable to provide a connection port that can be connected to the negative pressure releasing means. As the air feeding means, the above-described negative pressure generating device such as a vacuum pump or an exhaust blower can be connected in reverse. This is because the negative pressure can be released by feeding air or the like exhausted by the negative pressure generating means.

  The shape of the side plate is preferably a shape matching the diameter of the roll body, for example, a shape such as a circle shown in FIGS. 2 and 3, but a shape that can easily give a certain pressure through the biasing means, Any shape that does not hinder the rotation of the roll body may be used.

[2] Conveyance sheet:
The conveyance sheet conveyed by the suction roll in this embodiment is a sheet-like thing, for example, a bubble sheet, a foam sheet, etc. Here, the bubble sheet or the foam sheet is one of cushioning materials used for packaging or the like. For example, one of the two sheets is formed into a cylindrical projection and air is trapped therein. In some cases, the air pressure realizes the function of the cushioning material.

[3] Conveying sheet supply means:
A conveyance sheet supply means is a means for sending out a conveyance sheet to a suction roll, Comprising: It is generally comprised from the original fabric roll which rolled the original fabric of the conveyance sheet. The original fabric roll is formed to be rotatable in conjunction with the rotation of the suction roll. Here, “interlocking” with the suction roll means that the original roll is rotated according to the rotation of the suction roll, and the transport sheet is supplied to the suction roll. The reason for interlocking with the suction roll in this way is that the suction roll rotates intermittently. In other words, even if the rotation of the suction roll is temporarily stopped, if the rotation of the original fabric roll is continued, the conveyance sheet may be bumped or twisted between the original fabric roll and the suction roll. This is because the effects of can not be achieved.

  As such interlocking, there are (1) one that passively interlocks with the rotation of the suction roll, and (2) one that automatically interlocks with the rotation of the suction roll.

  As one (1) that is passively interlocked with the rotation of the suction roll, there is a case where the original roll is rotated such that the conveyance sheet is pulled by the rotation of the suction roll. For example, starting from the original fabric roll, a certain amount of tension is applied to the conveying sheet to attract it to the suction roll, and the original fabric roll rotates and the conveying sheet is sent out so as to be pulled by the rotation of the suction roll. Further, when the rotation of the suction roll is stopped, the original roll is no longer pulled through the conveying sheet, so that the rotation of the original sheet is also stopped. Therefore, it is possible to prevent the transport sheet from becoming loose between the raw fabric roll and the suction roll. In addition, the above-described method of applying tension refers to a state where the sheet is pulled to such an extent that it is not caused by the conveying sheet or bumping. If the tension is applied excessively, the conveyance sheet is damaged, and the suction trace of the suction roll remains, which is not preferable. Therefore, by forming in this way, it is only necessary to attach a power (motor or the like) that rotates only to the suction roll. Furthermore, since the dimension adjustment of the transport sheet can be performed only by the suction roll, it is easy to control and is convenient. preferable.

  As (2) that automatically interlocks with the rotation of the suction roll, not only the suction roll but also the original fabric roll can be formed so as to be able to rotate spontaneously. The raw roll is preferable because it can spontaneously adjust the feeding sheet and adjust the dimensions at an early stage. However, since it is necessary to further adjust the feeding amount of the transport sheet between the raw roll and the suction roll in a subsequent process, in addition, it is necessary to rotate the raw roll by attaching power such as a motor. The number of parts increases and is inferior to (1) in terms of convenience.

[4] Cutting means:
The cutting means is mainly configured by a cutting device such as a shear blade so that the conveyance sheet can be cut (cut). However, since the conveyance sheet, especially the bubble sheet, is formed by laminating two sheets, it contains a myriad of bubbles inside, so if the cut surface is on the bubbles, it will be cut The cut end face made through the process tends to be inferior, leading to quality degradation. Therefore, it is more preferable to use a cutting means for fusing and welding.

  Specifically, as shown in FIG. 9, the cutting means includes a heat seal bar 24 and a pair of presser bars 25 and 26, and the heat seal bar 24 is disposed between the pair of presser bars 25 and 26. Is done. Further, the heat seal bar 24 is formed in a plate shape, and is arranged so that the plate surface thereof is parallel to the conveyance sheet direction, and the plate surface thereof is arranged to be parallel to the width direction of the conveyance sheet. Furthermore, the heat seal bar 24 is formed in a wedge shape having a V-shaped cross section at the end close to the transport sheet 101, and is embedded with a heater that overheats when energized. Further, the heat seal bar 24 is provided with a moving mechanism, and is configured to move in a direction approaching the transport sheet (down) and a direction away from the transport sheet (up).

  The press bars are arranged on the upstream side and the downstream side in the conveying sheet flow direction of the heat seal bar. Below the press bars 25 and 26, a pair of press receiving bases 27 and 28 corresponding to the press bars 25 and 26, respectively. Is provided. The pressing bars 25 and 26 are plate-shaped, and their plate surfaces are arranged in the length direction (flow direction) of the transport sheet. Further, the presser bases 27 and 28 are formed in a plate shape, and the plate surfaces thereof are arranged in parallel with the flow direction of the transport sheet 101.

  The holding bar is provided with a moving mechanism similar to that of the heat seal bar, and is configured to be movable in the vertical direction in FIG. 9, that is, the direction approaching the transport sheet (down) and the direction away from the transport sheet (up). ing. In addition, the surface of the pressing bar that faces the transport sheet is configured as press surfaces 25a and 26a that press the transport sheet.

  In the pressing bar, inclined surfaces 25b and 26b corresponding to the wedge shape of the heat seal bar are formed on the surface facing the heat seal bar. For this reason, the pressing bar is formed so that its cross section is widened toward the pressing surface, and the end of the pressing surface is close to the tip of the heat seal bar.

  Further, the transport sheet 101 can pass over the press receiving bases 27 and 28. The pair of press receiving bases 27 and 28 are arranged with a gap in the flow direction of the transport sheet 101 (so-called downstream side).

  Further, a seal receiving roll 29 is provided below the pair of press receiving bases. The seal receiving roll is configured as a heat seal cradle when cutting and sealing the transport sheet with a heat seal bar.

  By being configured in this way, the conveyance sheet 101 can be cut by the heat seal bar while being pressed by the pair of pressing bars 25 and 26. In addition, it is one of the preferable forms to be sealed at the same time as cutting.

  The seal receiving roll of the present embodiment is configured in a cylindrical shape and is arranged in parallel with the sheet flow direction. The upper end of the seal receiving roll is located in the gap between the pair of press receiving bases. The seal receiving roll is provided with a rotation mechanism, and is configured to always rotate in a direction in which the conveyance sheet is moved downstream in the sheet flow direction. The seal receiving roll is made of a material having heat resistance and elasticity, for example, a material such as silicon. In addition, a fluororesin sheet is attached to the surface of the seal receiving roll in order to make it difficult for impurities such as debris to adhere when sealing with a heat seal bar.

  A removal member 30 for removing impurities from the surface of the seal receiving roll is provided in the vicinity of the seal receiving roll. The removing member is configured to remove impurities attached to the surface of the seal receiving roll by rotating the seal receiving roll when the seal receiving roll is sealed at the tip. The removing member is composed of a scraper (a spatula), a brush, or the like.

  Further, on the downstream side in the sheet flow direction such as the heat seal bar and the press bar, take-up conveyors 31 and 32 that take the conveyance sheet sealed by the heat seal bar downstream may be provided.

  Note that the cutting means is not limited to the heat sealing bar or the like as described above. For example, when the cutting means is made of a material not suitable for fusing, the cutting may be performed with a metallic cutter or the like.

[5] How to use suction roll:
A desired original fabric roll is set at a predetermined position as a starting point. The suction roll is adjusted in advance so that the desired dimension can be rotated. This rotation adjustment is carried out by a control mechanism via a computer, and is performed by adjusting the number of rotations of a motor or the like as a power source by the control mechanism. Next, the conveying sheet is stretched (pulled) from the raw roll to the suction roll by human means such as hands or mechanical means, and the power source of the suction roll and the cutting means is switched on. The conveyance sheet is attracted, the conveyance sheet flows to the cutting means, and cutting is performed. Furthermore, the cut conveyance sheet having a desired size is accumulated at a predetermined position by a take-up conveyor or the like. Then, it progresses to the process of binding a conveyance sheet | seat.

[6] Conveying device:
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be described. However, the present invention is not limited to the following embodiment, and is within the scope of the gist of the present invention. Based on the knowledge, it should be understood that modifications and improvements as appropriate to the following embodiments are also included in the scope of the present invention.

  A conveying device of the present invention is a conveying device comprising a suction roll, a conveying sheet supply unit that supplies a conveying sheet to the suction roll, and a cutting unit that cuts the conveying sheet conveyed from the suction roll. Is configured to be able to be interlocked with the transport sheet supply means and to be able to control the rotation of the roll body, and to be capable of feeding a transport sheet having a desired dimension to the cutting means by the rotation of the roll body. It is preferable that the conveyance sheet fed from the roll is configured to be capable of being cut. More preferably, the cutting means includes a heat seal bar for fusing the conveyance sheet simultaneously with fusing, a seal cradle for receiving the conveyance sheet conveyed from the suction roll, and a pressing means for pressing the conveyance sheet to the seal cradle. And a press receiving base arranged to face the pressing means. This is because the effects of the present application can be achieved. Hereinafter, it demonstrates concretely, referring drawings.

  As shown in FIG. 9, the conveying device of the present invention includes the suction roll 1 described above, a conveying sheet supply means 103 for supplying the conveying sheet 101 to the suction roll 1, and a conveying sheet conveyed from the suction roll 1. And a cutting device 23 for cutting 101. The suction roll 1 can be interlocked with the conveyance sheet supply unit 103 and can control the rotation of the roll body 3, and can feed the conveyance sheet 101 having a desired dimension to the cutting unit 23 by the rotation of the roll body 3. Preferably it is comprised.

  By configuring the transport device in this way, for example, when the transport sheet adsorbed on the roll body moves between the raw roll and the suction roll by the rotation of the roll body, The conveying sheet wound around the anti-roll is pulled and rotated, and further the conveying sheet is sent out. That is, it can be interlocked, and the looseness of the conveyance sheet can be eliminated. In addition, as described above, this linkage is performed by attaching a power source to each of the raw fabric roll and the suction roll, in addition to using a moderate tension on the transport sheet between the original fabric roll and the suction roll. It may be configured to be rotatable and interlockable.

  In addition, the conveyance device of the present embodiment may be configured by installing conveyance means such as a belt conveyor between the suction roll and the cutting means so that the conveyance sheet easily flows (is easily conveyed). For example, it is preferable to arrange a take-up conveyor between the suction roll and the cutting means as shown in FIG.

  In addition, if the conveyance apparatus of this embodiment is comprised so that a conveyance sheet may be conveyed (flow) from an original fabric roll to a suction roll, and from a suction roll to a cutting means, a plurality of small rolls may be appropriately used. You may arrange | position between a roll and a suction roll or between a suction roll and a cutting means. Furthermore, you may arrange | position the belt conveyor for making it convey. In addition, the small roll shown in FIG. 9 may not be disposed between the original fabric roll and the suction roll, and the conveyance sheet may be directly conveyed from the original fabric roll to the suction roll.

  Furthermore, as shown in FIG. 9, the transport device of the present embodiment is not limited to the horizontal flow (movement) direction, and can take various flows. For example, the suction roll shown in FIG. 9 is shown so that the transport sheet is transported from the left side to the right side on the paper surface of FIG. 9, but is not limited to such a configuration. Further, the direction from the left side to the right side is not limited to the strictly horizontal flow direction.

  For example, FIG. 10 is a diagram schematically illustrating a state where the transport sheet flows from top to bottom. In this way, by configuring the transport device, the transport sheet naturally flows (falls) downward due to its own weight, so that it is less likely to cause wobbling and blurring, and between the suction roll and the cutting means, It is not necessary to provide a conveyor and the convenience can be improved. If the cradle indicated by reference numeral 35 is provided and arranged as shown in the figure, the cut conveyance sheet hits the cradle and moves to the take-up conveyors 31 and 32 so as to slide, so that it is convenient in terms of stacking of the conveyance sheets. There is.

  The suction roll of the present invention and the transport device for the transport sheet using the suction roll are used as various transport rolls for various printing devices, coating devices, calendar devices, slitter devices, laminator devices, fiber processing devices, packaging devices, etc. Can do. In particular, it is suitable for conveying a bubble sheet and a foam sheet.

It is a figure which shows typically one Embodiment of the suction roll of this invention. It is the whole suction roll view of the present invention, and is the figure shown typically. It is the figure which showed typically the front view of the suction roll of this invention in the partial cross section. It is the figure which expanded partially the suction hole peripheral member of the suction roll of this invention, and is the figure shown typically. It is the figure which showed typically the front view of the suction roll of this invention in the partial cross section, Comprising: It is the figure which showed typically the state which the negative pressure release means and the negative pressure supply channel | path are connected. It is the front view which showed the side plate which can be used conveniently for the suction roll of this invention, Comprising: It is the figure which showed the side plate typically. It is the figure which showed the inner side of FIG. 6A typically. It is the front view which showed the side plate which can be used for the suction roll of this invention, Comprising: It is the figure which showed typically an example of the connection port. It is the front view which showed the side plate which can be used for the suction roll of this invention, Comprising: It is the figure which showed typically an example of the connection port. It is the side view which showed the side plate which can be used conveniently for the suction roll of this invention, and is the figure shown typically. It is the figure which showed typically one Embodiment of the suction roll and conveying sheet conveying apparatus of this invention. It is the figure which showed typically one Embodiment of the suction roll of this invention, and the conveyance apparatus of a conveyance sheet | seat.

Explanation of symbols

1: Suction roll, 3: Roll main body, 4, 4a, 4b: End of roll main body, 5: Suction hole, 5a: Bottom wall, 7: Shaft (axial center, rotating shaft), 9: Negative pressure supply passage 11, 11a, 11b, 11c, 11d: small through hole, 13, 13a: connection port, 15: negative pressure generating means, 17: side plate, 18: negative pressure releasing means, 19: slit, 21: biasing means 24: heat seal bar, 25: pressing bar, 25a: pressing surface, 25b: inclined surface, 26: pressing bar, 26a: pressing surface, 26b: inclined surface, 27: pressing table, 28: pressing table, 29 : Seal receiving roll, 30: removal member, 31: take-up conveyor, 32: take-up conveyor, 35: seal receiving stand, 101: transport sheet, 103: raw fabric roll, V: vacuum zone, Z: negative pressure release zone.

Claims (7)

A plurality of holes formed on the outer peripheral surface of the roll body, and suction holes capable of sucking the transport sheet;
A negative pressure supply passage that is formed along the axial direction of the roll body and communicates with the suction hole and serves as a negative pressure supply passage, and a negative pressure release means that releases the negative pressure of the negative pressure supply passage. A suction roll comprising:
A suction roll in which the suction hole is formed so as to be capable of sucking the transport sheet, and is formed so as to be capable of releasing the transport sheet by the negative pressure releasing means.   When the suction hole is positioned in a range of 0 to 180 degrees with respect to the axis of the roll body by the rotation of the roll body, the transport sheet is formed so as to be sucked, and by the rotation of the roll body. 2. The suction roll according to claim 1, wherein the conveying sheet is formed to be releasable by the negative pressure releasing means when positioned in a range of 180 to 270 degrees with respect to an axis of the roll main body.   The suction roll according to claim 1 or 2, wherein the negative pressure release amount of the negative pressure release means is adjustable.   The suction roll according to any one of claims 1 to 3, wherein the negative pressure release of the negative pressure release means is performed by sending outside air into the suction hole through the negative pressure supply passage.   The suction roll according to any one of claims 1 to 4, wherein the transport sheet is a bubble sheet or a foam sheet. The suction roll according to any one of claims 1 to 5,
Conveying sheet supply means for supplying the conveying sheet to the suction roll;
A cutting device for cutting a transport sheet transported from the suction roll, and a transport device comprising:
The suction roll is configured to be capable of interlocking with the transport sheet supply means, and to be able to control the rotation of the roll body, and is configured to be able to send a transport sheet having a desired dimension to the cutting means by the rotation of the roll body.
The conveyance apparatus of the conveyance sheet comprised so that the said cutting means can cut the conveyance sheet sent out from the said suction roll. The cutting means includes a heat seal bar for fusing the conveying sheet simultaneously with fusing,
A seal cradle for receiving a transport sheet transported from the suction roll;
Holding means for holding the conveying sheet against the seal cradle;
The conveying apparatus according to claim 6, further comprising a pressing cradle arranged to face the pressing means.

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