JP2013027799A - Apparatus for removing foreign matter on sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for removing foreign matter capable of reliably removing a lump (foreign matter).SOLUTION: In the apparatus for removing foreign matter on a sheet including a removing unit 5 for removing the foreign matter adhered on a foaming resin sheet, the removing unit 5 includes a pair of suction devices 6, 7 disposed on front and back sides of the sheet to suck the foreign matter adhere on both front and back sides of the sheet. The suction devices 6, 7 are suction parts for sucking the foreign matter by applying suction force to the foaming resin sheet, wherein the plurality of suction parts having a predetermined length along a width direction of the foaming resin sheet are arranged in parallel in the width direction.

Description

  The present invention relates to a sheet foreign matter removing apparatus provided with a removing means for removing foreign matters attached to a foamed resin sheet.

  Conventionally, a foamed resin sheet using a polystyrene-based resin as a base resin has been widely used as a raw material for thermoformed products such as food trays. This polystyrene-based foamed resin sheet is usually produced by continuous extrusion foaming of a polystyrene-based resin composition. And the foamed resin sheet manufactured by the continuous extrusion foaming to the elongate strip shape is made into the state called the original fabric roll etc. which were once wound up by roll shape, and is utilized for a shaping | molding process after that.

  The manufacturing process of the foamed resin sheet will be described in more detail. The polystyrene resin composition is melt-kneaded with a foaming agent or the like in an extruder, and a circular as a mold for extrusion foaming attached to the tip of the extruder. The melt-kneaded material is extruded and foamed from an annular die slit (discharge port) of the die to continuously form a cylindrical foam. Then, after cooling the cylindrical foam from the inside with a cooling mandrel, a continuous cutting along the extrusion direction is made with a cutting device and developed into a strip shape, and the resulting strip-shaped polystyrene-based foamed resin sheet is rolled. The material roll is wound up into a shape.

  By the way, in the vicinity of the discharge port of the mold of the extruder, a lump of resin (foreign matter) called “eyes” accumulates and grows. When this lump grows and becomes large, it separates from the mold and adheres as a foreign matter to the foamed resin sheet that is fed out.

  In order to solve the above problem, an apparatus in which the mold is devised, such as coating the inner surface of the mold so that no lump (foreign matter) accumulates, has already been proposed (see, for example, Patent Document 1).

JP 2000-246782 A

  In the mold subjected to the above treatment, it is difficult to completely prevent the formation of lumps, and there is room for improvement. In addition, there are facilities that do not use a processed mold, and an early improvement is desired.

  In view of this, it is conceivable to separately provide a foreign matter removing apparatus provided with a removing means for removing the lump attached to the extruded foamed resin sheet. For example, it is possible to provide a scraper that scrapes off the lump adhering to the foamed resin sheet to be extruded, or to provide a suction portion that has a length over the entire width of the foamed resin sheet and sucks and removes the lump. .

  When scraping off lump with a scraper, the inconvenience which damages a foamed resin sheet generate | occur | produces, and it is hard to use it. In addition, when the lump is sucked and removed by the suction part, the suction part is long, so the suction force is dispersed and the suction force cannot be reliably applied, and the lump (foreign matter) is surely removed. It cannot be removed.

  Then, this invention is made | formed in view of this situation, and makes it a subject to provide the foreign material removal apparatus which can remove a lump (foreign material) reliably.

  The sheet foreign matter removing apparatus according to the present invention is a sheet foreign matter removing apparatus provided with a removing means for removing foreign matter attached to the foamed resin sheet, wherein the removing means sucks foreign matter attached to both the front and back sides of the foamed resin sheet. A pair of suction devices arranged on both front and back sides of the foamed resin sheet to be removed, the suction device is a suction part that sucks the foreign matter by applying a suction force to the foamed resin sheet, A plurality of suction portions having a predetermined length along the width direction of the sheet and arranged in parallel in the width direction are provided.

  According to the present invention, foreign matter (for example, a lump of resin) adhering to the front surface and the back surface of the foamed resin sheet can be sucked and removed by the suction force of a pair of suction devices disposed on the front and back sides of the sheet. Here, since the suction device includes a plurality of suction portions arranged in parallel in the width direction of the foamed resin sheet, foreign matter can be sucked and removed by the suction force of each suction portion, and the foreign matter (resin lump) adhered to the foamed resin sheet. Etc.) can be removed reliably.

  Moreover, in the foreign material removing apparatus for a sheet according to the present invention, at least one of the plurality of suction portions is disposed so as to be displaced in the length direction of the foamed resin sheet with respect to the other suction portions. It is preferable.

  According to such a configuration, when at least one of the plurality of suction parts is displaced in the length direction of the foamed resin sheet with respect to the other suction parts, the suction force acting on the foamed resin sheet is long. Since the concentrated resin does not act in one place in the direction, the foamed resin sheet can be sent out satisfactorily without a large bending force in the width direction acting on the foamed resin sheet.

  Moreover, in the foreign substance removing apparatus for a sheet according to the present invention, the plurality of suction portions are arranged such that adjacent suction portions are displaced from each other in the length direction of the foamed resin sheet, and adjacent suction portions are adjacent to each other. It is preferable that the wraps in the length direction.

  According to such a configuration, the adjacent suction portions of adjacent suction portions wrap in the length direction, so that the suction force between the adjacent end portions of adjacent suction portions may be reduced. In addition, foreign matter (such as a lump of resin) attached to any position of the foamed resin sheet can be reliably sucked.

  As described above, according to the present invention, by providing a suction device having a plurality of suction portions arranged in parallel in the width direction of the foamed resin sheet, foreign matter can be sucked and removed by the suction force of each suction portion, Foreign matter (such as a lump of resin) adhering to the sheet can be reliably removed.

It is a schematic side view of the manufacturing equipment which manufactures the polystyrene-type foaming resin sheet incorporating the foreign material removal apparatus of this invention. It is a side view of the foreign material removal apparatus. It is a top view of the foreign material removal apparatus. It is a top view which shows the principal part of the foreign material removal apparatus. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is a front view of the foreign substance removal apparatus which added the air supply path.

  Hereinafter, an embodiment of a sheet foreign matter removing apparatus according to the present invention will be described with reference to FIGS.

  The foreign matter removing device is one of devices used by being incorporated in a production facility for producing, for example, a polystyrene-based foamed resin sheet. As shown in FIG. 1, this manufacturing facility includes a tandem extruder 100 as an extruder for melt-kneading a polystyrene resin composition containing a foam material. At the tip of the tandem extruder 100, a circular die 102 as an extrusion foaming mold for extruding the polystyrene resin composition in a foamed state to form a cylindrical foam 101 is mounted.

  The manufacturing facility also includes a cooling mandrel (also referred to as a plug) 103 provided in front of the circular die 102. The cooling mandrel 103 cools the foam 101 discharged in a cylindrical shape from an annular die slit (discharge port) opened on the front surface of the circular die 102 from the inner surface side and expands the diameter of the foam 101. Thus, it is configured to be formed in a cylindrical shape of a predetermined size.

  Furthermore, the manufacturing equipment includes a cutting device 111 for providing a continuous cut along the extrusion direction in the cylindrical foam 101 cooled by the cooling mandrel 103. With this cutting device 111, the cylindrical foam 101 can be developed to form a strip-shaped polystyrene-based foamed resin sheet (hereinafter simply referred to as sheet F).

  And the foreign material removal apparatus 1 which removes the foreign material adhering to both the front and back surfaces of the belt-like sheet F formed by being cut by the cutting device 111 is provided on the sheet length direction lower side (extrusion direction lower side) of the cooling mandrel 103. It has been. The foreign matter is a lump of resin called a spear deposited in the vicinity of the protruding opening of the circular die 102. The foreign matter separates from the circular die 102 and adheres to the sheet F, and the adhered lump (foreign matter) is removed by the foreign matter removing apparatus 1. The sheet F that has been subjected to the foreign substance removal processing by the foreign substance removal apparatus 1 is wound up by the winder 104. In addition, in front of the foreign substance removing apparatus 1, from the upstream side in the sheet length direction, a developing roll 105 for developing the sheet F, and both end portions in the width direction of the moving sheet F are sandwiched from above and below to position the end. A cross guider 106 to be set is provided.

  The winder 104 includes a pair of upper and lower nip rolls 107 for applying a predetermined pressure to the sheet from the upstream side in the sheet length direction, a pair of upper and lower S rolls 108 for winding the sheet F in an S shape, and the sheet immediately before winding. A guide roll 109 for guiding F and a winding roll 110 for winding the sheet F are provided.

  As shown in FIGS. 2 and 3, the foreign matter removing apparatus 1 is provided on a rectangular frame 2 including a pair of front and rear frame portions 2A and 2B and a pair of left and right frame portions 2C and 2D, and a front upper end of the frame 2. The upper and lower sides of the sheet F (see FIG. 1) developed by the cutting device 111 are arranged on the left and right sides so as to control the positions of the both ends in the width direction of the sheet F (see FIG. 1) by sandwiching both ends in the vertical direction. The cross guider 106 composed of a pair of sandwiching rolls 3, 3, 4 and 4 (see FIG. 3 and FIG. 5) and the front and back surfaces of the sheet F whose position is controlled by the pair of upper and lower sandwiching rolls 3, 3, 4, 4 And removing means 5 for removing the foreign matter. The pair of upper and lower sandwiching rolls 3, 3, 4, and 4 are rotatably supported by support members E provided upright on the pair of left and right frame portions 2C and 2D, respectively.

  The removing means 5 includes a pair of suction devices 6 and 7 disposed on both the front and back sides of the sheet, that is, on the upper side and the lower side of the sheet in order to suck foreign matter from both sides of the sheet.

  As shown in FIGS. 3 to 6, the upper suction device 6 is attached to a metal case 10 and a spacer 13 in the case 10, and suction openings 11 </ b> K and 12 </ b> K are formed at the lower end to form a width. A plurality of first and second upper box-like bodies 11 and 12 made of metal constituting a suction portion are provided in parallel (two in this case) in the direction.

  The case 10 includes a ceiling wall 10A and front and rear walls 10B and 10C that hang downward from the front and rear ends of the ceiling wall 10A, and is configured in an arch shape in which the lower end and the left and right ends are open.

  Since the first and second upper box-like bodies 11 and 12 have the same configuration, the first upper box-like body 11 will be described. The first upper box-shaped body 11 includes a ceiling wall 11A, front and rear walls 11B and 11B hanging downward from the front and rear ends of the ceiling wall 11A, and left and right walls 11C and 11C hanging downward from the left and right ends of the ceiling wall 11A. 6, only one of them is shown), and the lower part is configured in a box shape having an open side.

  As shown in FIG. 4, the first upper box-shaped body 11 is the center portion of the case 10 in the front-rear direction (the length direction of the seat F) and the left side in the left-right direction (the left side in the width direction orthogonal to the length direction of the seat F). It is arranged at a position close to. Further, the second upper box-like body 12 is located at the front end portion of the case 10 in the front-rear direction (the length direction of the seat F) so as to be located in front of the first upper box-like body 11 and on the right side in the left-right direction. It is arranged at a position close to (the right side in the width direction orthogonal to the length direction of the sheet F). The two upper box-like bodies 11 and 12 are arranged in a state where the left and right end portions adjacent in the width direction orthogonal to the length direction of the sheet F wrap in the front-rear direction (the length direction of the sheet F). Has been. The wrap amount is set to a space where an air muffler 18 or a suction pipe 19 described later is arranged, but can be freely changed. The rear end of the case 10 in the front-rear direction is a space.

  As shown in FIGS. 3 to 6, the lower suction device 7 is attached with a metal case 14 and a spacer 17 in the case 14, and suction openings 15 </ b> K and 16 </ b> K are formed at the upper end. A plurality of (in this case, two) metal-made first and second lower box-like bodies 15 and 16 constituting a suction portion are provided.

  The case 14 includes a bottom wall 14A and front and rear walls 14B and 14C raised upward from the front and rear ends of the bottom wall 14A, and is configured in an inverted arch shape with the upper end and both left and right ends open.

  Since the 1st and 2nd lower box-shaped bodies 15 and 16 are the same structures, the 1st lower box-shaped body 15 is demonstrated. The first lower box-shaped body 15 includes a bottom wall 15A, front and rear walls 15B and 15B raised upward from the front and rear ends of the bottom wall 15A, and left and right walls 15C raised upward from the left and right ends of the bottom wall 15A. 15C (only one is shown in FIG. 6), and the upper part is configured as an open box.

  The first lower box-like body 15 is disposed at the rear end portion of the case 14 in the front-rear direction (the length direction of the seat F) and at the left side in the left-right direction (the left side in the width direction orthogonal to the length direction of the seat F). Has been. Further, the second lower box-like body 16 is located at the center of the case 10 in the front-rear direction (the length direction of the seat F) so as to be located in front of the first lower box-like body 15 and on the right side in the left-right direction. It is arranged at a position close to (the right side in the width direction orthogonal to the length direction of the sheet F). The two lower box-like bodies 15 and 16 are arranged in such a manner that the left and right end portions adjacent in the width direction orthogonal to the length direction of the sheet F wrap in the front-rear direction (length direction of the sheet F). Has been. The wrap amount is set to a space where an air muffler 18 or a suction pipe 19 described later is arranged, but can be freely changed. The front end of the case 14 in the front-rear direction is a space.

  The lower case 14 is displaced to the rear side in the sheet length direction with respect to the upper case 10. As shown in FIGS. 3, 4, and 6, the deviation amount is approximately the width of one box-like body 15, but this deviation amount can be changed. Due to such misalignment, the lower two first and second lower box-like bodies 15 and 16 are positioned next to the two first and second upper box-like bodies 11 and 12 of the upper case 10. It will be. Specifically, the second upper box-like body 12, the first upper box-like body 11, the second lower box-like body 16, and the first lower box-like body 15 are arranged in order from the front side.

  Further, the dimension in the sheet length direction of the upper case 10 is extended by one box-like body to the rear side in the sheet length direction to provide a space, and the dimension in the sheet length direction of the lower case 14 is set to the sheet length. A space is provided by extending one box-like body forward in the direction. As a result, the amount of wrap in the sheet length direction between the upper case 10 and the lower case 14 is increased, and the guide distance at which the sheet F is guided between the upper case 10 and the lower case 14 is increased. Yes.

  As shown in FIG. 6, the upper case 10 includes horizontal plate portions 10 a and 10 c having bottom surfaces that are bent at 90 ° inward in the front-rear direction and having a flat bottom surface, and the horizontal plate portion 10 a. , 10c are provided with vertical plate portions 10b, 10d which are bent upward by 90 degrees from the inner end. The lower case 14 includes horizontal plate portions 14a and 14c having upper surfaces of the front and rear walls 14B and 14C bent 90 degrees inward in the front-rear direction and having a flat upper surface, and inner ends of the horizontal plate portions 14a and 14c. The vertical plate portions 14b and 14d are bent 90 degrees downward.

  Further, the upper first upper box-like body 11 includes horizontal plate portions 11a and 11a whose bottom surfaces have a flat surface by bending the lower ends of the front and rear walls 11B and 11B inward in the front-rear direction, and the horizontal plate portions 11a and 11a. The vertical plate portions 11b and 11b are bent 90 degrees upward from the inner end of 11a. The bottom surface (lower surface) of the horizontal plate portions 11a, 11a of the upper first upper box-shaped body 11 is positioned above the bottom surface (lower surface) of the horizontal plate portions 10a, 10c of the upper case 10. Has been. Further, the first lower box-like body 15 on the lower side has horizontal plate portions 15a and 15a having a flat surface with the bottom surface being bent horizontally by bending the upper end portions of the front and rear walls 15B and 15B inward in the front-rear direction, and the horizontal plate. And vertical plate portions 15b, 15b bent 90 degrees downward from the inner ends of the portions 15a, 15a. The top surfaces (upper surfaces) of the horizontal plate portions 15a, 15a of the lower first lower box-like body 15 are positioned below the top surfaces (upper surfaces) of the horizontal plate portions 14a, 14c of the lower case 14. Is configured to do. The upper second upper box-like body 12 and the lower second lower-box-like body 16 are also configured in the same manner as the upper first upper box-like body 11 and the lower first lower box-like body 15. . That is, the upper second upper box-like body 12 is formed by bending the lower end portion of the front and rear walls 90 degrees inward in the front-rear direction and the lower surface having a flat surface, and 90 degrees upward from the inner end of the horizontal plate portion. And a bent vertical plate portion. Further, the lower second lower box-like body 16 includes a horizontal plate portion whose lower end portion is bent 90 degrees inward in the front-rear direction and the lower surface has a flat surface, and 90 ° upward from the inner end of the horizontal plate portion. And a vertical plate part that is bent at a time.

  Further, one (upper side) suction device 6 of the pair of suction devices 6 and 7 has a piston of a pair of air cylinders 8 and 9 projecting from upper ends on both the left and right sides of the frame 2 as shown in FIG. The rods 8 </ b> A and 9 </ b> A are attached in a state of being spanned between the tips. The other (lower) suction device 7 is attached in a state of being spanned between the cylinder tubes 8B, 9B of the pair of air cylinders 8, 9.

  As shown in FIGS. 3, 4, 5, and 7, one end (lower end) of the air muffler 18 constituting the external air intake portion is provided at one end in the width direction of the box-like bodies 11, 12, 15, and 16. A suction pipe 19 that is connected through and sucks air taken in from the air muffler 18 together with foreign substances and discharges it outside the box-like body is provided at the other end in the width direction of the box-like bodies 11, 12, 15, 16. Through-connection.

  More specifically, the mounting positions of the air muffler 18 and the suction pipe 19 include the air muffler 18 at the width direction outer ends of the upper two first and second upper box-like bodies 11, 12, and A pipe 19 is provided at the inner end in the width direction. In addition, an air muffler 18 is provided at the outer end in the width direction of the lower two first and second lower box-like bodies 15, 16, and a pipe 19 is provided at the inner end in the width direction.

  As shown in FIG. 7, pressure gauges PI, PI, PI, and PI are connected to four pipes 19 (two pipes on the upper side and two pipes on the lower side) via four pipes 20 to 23, respectively. The valves 28A, 28B are connected to the pressure gauges PI, PI on the outlet side of one of the two pipes 20, 21, and the outlet ends of the two pipes 20, 21 are connected to one pipe 24. A joint first pipe 25 for joining is connected. In addition, valves 29A and 29B are connected to the pressure gauges PI and PI on the other two pipes 22 and 23, and the outlet ends of the two pipes 22 and 23 are connected to one pipe 26. A joint second pipe 27 for joining is connected. The discharge ports of the two pipes 24 and 26 are joined to one pipe 30, a hopper 31 is connected to the end of the pipe 30, and a suction blower (pump) P 1 is connected to the hopper 31.

  An air supply pump P is connected to the two air cylinders 8 and 9 via a switching valve 32.

  The upper suction part is composed of the first and second upper box-like bodies 11 and 12, the air muffler 18 and the suction pipe 19 connected to the upper box-like bodies 11 and 12, respectively. The lower suction part is composed of the first and second lower box-like bodies 15 and 16, the air muffler 18 and the suction pipe 19 connected to the lower box-like bodies 15 and 16, respectively. ing.

  The removal of foreign matter such as debris attached to the sheet by the foreign matter removing apparatus having the above configuration will be described. First, by switching the switching valve 32 from the central position shown in FIG. 7 to the left side, the air from the air supply pump P is supplied to the air cylinders 8 and 9 to extend the air cylinders 8 and 9. As a result, the upper suction device 6 is moved away from the lower suction device 7. In this separated state, the seat F is inserted between the upper case 10 and the lower case 14, and after the insertion, the switching valve 32 is moved to the right side, and the air from the air supply pump P is supplied to the air cylinders 8, 9. The air cylinders 8 and 9 are shortened. As a result, the upper suction device 6 is returned to the initial position where the upper suction device 6 is brought closer to the lower suction device 7, thereby setting the sheet sandwiched between the upper case 10 and the lower case 14.

  After the setting is completed, the suction blower (pump) P1 is operated for suction and the sheet is sent out. By this suction operation, outside air is supplied from the air muffler 18 to the four box-like bodies 11, 12, 15, 16. If foreign matter adheres to the sheet F, the foreign matter is sucked and stored in the hopper 31 from the corresponding pipe 19 through the pipes 20, 21, 22, and 23. At this time, as shown in FIG. 6, the lower end surface or lower lower side of the horizontal plate portions 11a, 11a of the upper box-like bodies 11, 12 (only the first upper box-like body 11 is shown in FIG. 6). There is a slight gap H between the upper end surfaces of the horizontal plate portions 15a and 15a of the box-like bodies 15 and 16 (only the first lower box-like body 15 is shown in FIG. 6) and the upper or lower surface of the sheet F. It has occurred. From this, the lower plate of the horizontal plate portions 11a, 11a of the upper box-like bodies 11, 12 (only the first upper box-like body 11 is shown in FIG. 6) or the horizontal plate portions of the lower box-like bodies 15, 16 The upper end surfaces of 15a and 15a (only the first lower box-like body 15 is shown in FIG. 6) are not caught by the sheet F and give a large movement resistance to the sheet F.

  Also, as shown in FIG. 4, from the sheet length direction starting end side, the upper second upper box-like body 12, the upper first upper box-like body 11, the lower second lower box-like body 16, and the lower side The first lower box-shaped body 15 is displaced in order. For this reason, when all the box-shaped bodies 12, 11, 16, and 15 are arranged in a line along the width direction, the suction force is concentrated on one position of the moving sheet F, and the width direction is applied to the sheet. There is no such thing as a large bending force. Therefore, the sheet F can be moved smoothly.

  Further, adjacent end portions of the first and second box-like bodies 11 and 12 adjacent in the width direction and adjacent end portions of the first and second lower box-like bodies 15 and 16 are wrapped in the length direction. Therefore, the suction force between the adjacent end portions of the box-like bodies 11 and 12, 15 and 16 in the width direction does not decrease. For this reason, the foreign matter adhering to any position of the sheet F can be reliably sucked.

  Moreover, if the pipe 19 is provided at the inner end in the width direction, the sheet can be surely exerted the suction action regardless of the sheet width. On the other hand, when the pipe 19 is provided at the outer end in the width direction, a gap is generated between the sheet and the suction portion when the width direction ends of the sheet do not reach the suction portion. End up. For this reason, the suction air leaks out from the gap, and the suction force is greatly reduced.

  The sheet foreign matter removing apparatus according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

  In the embodiment, two box-like bodies are provided on the upper side and the lower side of the sheet, respectively, but three or more box-like bodies may be provided. In addition, it is optimal to provide the same number of box-like bodies on the upper side and the lower side of the sheet. However, depending on the case, different numbers of box-like bodies may be provided on the upper side and the lower side.

  In the above embodiment, the cases 10 and 14 for preventing the contact between the box-shaped body and the sheet are provided in addition to the sheet guidance. However, the cases 10 and 14 are omitted and only the box-shaped body is used. You can also

  Moreover, in the said embodiment, all four of upper 1st and 2nd upper box-shaped bodies 11 and 12 and lower 1st and 2nd lower box-shaped bodies 15 and 16 are made into the length direction of a foamed resin sheet. However, it may be configured such that at least one box-shaped body is displaced in the length direction of the foamed resin sheet. In addition, you may arrange | position so that the upper side 1st and 2nd upper box-shaped bodies 11 and 12 may be located in a straight line without shifting in the length direction of a foamed resin sheet. Similarly, the lower first and second lower box-like bodies 15, 16 may be arranged in a straight line without being displaced in the length direction of the foamed resin sheet.

  Moreover, in the said embodiment, although the up-and-down suction apparatuses 6 and 7 have shifted | deviated and arrange | positioned in the length direction of a foamed resin sheet, you may arrange | position in the same position, without being displaced.

  Moreover, in the said embodiment, although the pipe 19 was provided in the width direction inner side edge part, and the muffler 18 was provided in the width direction outer side edge part, the pipe 19 was provided in the width direction outer side edge part on the contrary, And you may provide the muffler 18 in the width direction inner side edge part.

  DESCRIPTION OF SYMBOLS 1 ... Foreign material removal apparatus, 2 ... Frame, 2A, 2B, 2C, 2D ... Frame part, 3, 4 ... Nipping roll, 5 ... Removal means, 6, 7 ... Suction device, 8, 9 ... Air cylinder, 8A, 9A ... piston rod, 8B, 9B ... cylinder tube, 10, 14 ... case, 10A ... ceiling wall, 10B, 10C ... front and rear walls, 10a, 10c ... horizontal plate portion, 10b, 10d ... vertical plate portion, 11, 12, 15 , 16 ... Box-shaped body, 11A ... Ceiling wall, 11K, 12K ... Suction opening, 11B ... Front and rear walls, 11C ... Left and right walls, 11a ... Horizontal plate portion, 11b ... Vertical plate portion, 13, 17 ... Spacer, 14A ... Bottom wall, 14B, 14C ... front and rear walls, 14a, 14c ... horizontal plate portion, 14b, 14d ... vertical plate portion, 15A ... bottom wall, 15K, 16K ... suction opening, 15B ... front and rear walls, 15C ... left and right walls, 15a Horizontal plate part, 15b ... Vertical plate part 18 ... Air muffler, 19 ... Pipe, 20-27, 30 ... Piping, 28, 29 ... Valve, 31 ... Hopper, 32 ... Switching valve, 100 ... Tandem extruder, 101 ... Foam, 102 ... Circular die, 103 ... Cooling mandrel, 104 ... winding machine, 105 ... developing roll, 106 ... cross guider, 107 ... nip roll, 108 ... S roll, 109 ... guide roll, 110 ... winding roll, 111 ... cutting device, F ... sheet, H ... Clearance, P ... Air supply pump, P1 ... Suction blower, PI ... Pressure gauge

Claims (3)

In the sheet foreign matter removing apparatus provided with a removing means for removing the foreign matter attached to the foamed resin sheet,
The removing means includes a pair of suction devices disposed on both front and back sides of the foamed resin sheet in order to suck and remove foreign substances adhering to both sides of the foamed resin sheet. A suction portion that sucks the foreign matter by having a predetermined length along the width direction of the foamed resin sheet, and a plurality of suction portions arranged side by side in the width direction. Sheet foreign material removal device.   2. The sheet foreign matter according to claim 1, wherein at least one of the plurality of suction portions is arranged to be displaced in the length direction of the foamed resin sheet with respect to the other suction portions. Removal device.   The plurality of suction parts are characterized in that adjacent suction parts are displaced in the length direction of the foamed resin sheet, and adjacent end parts of adjacent suction parts are wrapped in the length direction. The sheet foreign matter removing apparatus according to claim 1 or 2.

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