JP4057144B2 - Sheet-like member manufacturing method and sheet-like member manufacturing apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a sheet-like member manufacturing method and a sheet-like member manufacturing apparatus. For example, a sheet-like member is obtained from a raw material solution containing various raw materials such as various fibers such as wood, chemical substances, and metals, or food or sludge. The present invention relates to a manufacturing method and an apparatus for manufacturing a sheet-like member.
[0002]
[Prior art]
  For example, in the manufacture of pulp paper, a sample sheet for checking the finished quality is manufactured in advance, and the fiber concentration of the pulp liquid is measured with the sample sheet. It is checked whether or not. This sample sheet is manufactured before the pulp liquid is passed through the paper machine, and the process is basically the same as the process in the normal paper making line. That is, a process of obtaining a wet sheet by making a sampled pulp liquid by a paper making net (sometimes referred to as “wire”), a press dehydration process of dehydrating by pressing the wet sheet, and heating the wet sheet It is comprised from the heat drying process etc. which are dried with.
[0003]
  In the past, the manufacture of sample sheets by such processes has often relied mostly on manual work, but in view of problems such as time loss in the case of manual work and variations in finished products due to individual differences, At times, attempts have been made to do this mechanically, and several automatic machines have been proposed. For example, in JP-A-2-87041, after a sampled pulp liquid is diluted and stirred, a wet sheet is formed on the filter by sucking the diluted pulp liquid through a filter (mesh net). A wet sheet is described which is dried by heating. Note that if the pulp liquid is forcibly removed by suction when draining the pulp liquid through a papermaking net, the fine fibers are lost and color loss occurs. Therefore, it is desirable that this drainage be dependent on natural falling water.
[0004]
[Problems to be solved by the invention]
  Agitation of the pulp liquid in the paper making process uniformly disperses the fibers contained in the pulp liquid and entangles the fibers well in the uniform dispersion state, thereby preventing the formation of flocs (small lumps) and the entire surface. It has the important significance of obtaining the required strength uniformly. For this reason, even in this type of conventional apparatus, a step of stirring the pulp liquid is provided before the pulp liquid (diluted pulp liquid) is made.
[0005]
  However, in the conventional apparatus, due to the structural limitations of the stirring means and the like, stirring must be stopped when the pulp liquid is actually made. Therefore, while the paper is actually being removed, the fibers dispersed at the corners by stirring partially gather to form flocks, or the fibers are entangled, or the fibers stand up. Extract with postureTakeAs a result, there was a problem that the formation was inevitably worsened and the required strength could not be obtained easily. Unevenness in the papermaking process and insufficient strength are fatal defects even in the case of a sample sheet. The formation unevenness of the sample sheet, especially when making colored paper, is the hue of the finished paper. It is a serious problem because it causes a lot to go wrong.
[0006]
  In addition, in the process of heating and drying the wet sheet, the drying time can be shortened as the heating temperature is increased. However, with the exception of some colored paper, if the heating temperature is too high, the paper Since the color is remarkably changed, the heating temperature cannot be increased so much that, as a result, there is a problem that it takes time to dry. It is not enough to make one paper sample sheet, but it is necessary to make several sheets and check their average values and trends. Efficiency will decrease.
[0007]
  Furthermore, when the holding means for holding the wet sheet is pressed against the press plate while holding the wet sheet, when the holding means leaves the press plate, the wet sheet remains attached to the press plate, In many cases, the surface of the wet sheet was roughened when it was peeled off from the press plate. Such roughening causes a serious quality defect that detracts from the color determination.
[0008]
  In addition, since the holding means that holds the wet sheet itself is also heated considerably in the heating and drying process, this holding means can be used when holding the next wet sheet after one processing cycle. have. If the wet sheet is held while the holding means is very hot, drying proceeds at a stretch here, and since the degree of drying proceeding at this time is not constant, the amount of moisture brought into the next process is very low. As a result, even if the drying process time and the heating temperature are set to be constant, as a result, the degree of drying varies for each wet sheet. Naturally, the variation in drying between sample sheets causes various measured values to be distorted.
[0009]
  Furthermore, since the wet sheet just picked up is very easy to break because the fibers are not yet firmly bonded, it is unexpected to construct a means to peel it off from the paper net and transfer it to the next process. Have difficulty. For this reason, conventionally, a method of moving a wet sheet to a heating plate or the like by reversing the papermaking net has been used, but this method only complicates the apparatus and increases the cost. In addition, there is a problem that the operation is unreliable because the wet sheet may not be well separated from the net.
[0010]
  The above-mentioned problems are not limited to the manufacture of papermaking, but are made into sheets by collecting raw material liquids such as analysis sheets for analysis of raw materials for recycled paper and sludge, and foodstuff sheets. It points out about the manufacturing apparatus of the various sheet-like member which obtains a member.
[0011]
  The present invention has been made in view of the above-described conventional problems, and can optimize the formation of a wet sheet to be drawn on a net and ensure that the entire surface has a uniform strength. It aims at providing the manufacturing method of a sheet-like member, and the manufacturing apparatus of a sheet-like member. The present invention also provides a method and apparatus for producing a sheet-like member that can accelerate the drying of the wet sheet without applying excessive heat, or can uniformly dehydrate or dry the entire surface of the wet sheet. The purpose is to do.
[0012]
  Further, the present invention can always stably hold a wet sheet that is thin and very easy to break, or the wet sheet holding means does not affect the wet sheet thermally, or It aims at providing the manufacturing apparatus of the sheet-like member which can prevent clogging reliably. Then, an object of the present invention is to provide an apparatus for manufacturing a sheet-like member that can smoothly peel a wet sheet pressed against a press plate and that does not damage the wet sheet.
[0013]
[Means for Solving the Problems]
  In order to achieve this object, the method for producing a sheet-like member according to claim 1 comprises:Paper net cup (37) Provided inNet(39)Raw material liquid(P)Paper net by passing through(39)Wet sheet on(3)ScrapeI didIncludes paper removal processOnly,
  After that, the wet sheet (3) Net (39) When receiving from the sheet adsorption surface (112) Adsorption head with (87) By wet sheet (3) Adsorbed and retainedA method for producing a sheet-like member,
  SaidThe paper removal process is the raw material liquid(P)With stirringIs,
  The wet sheet (3) When adsorbing and holding a wet sheet, (3) Sheet adsorption surface formed almost parallel to (112) Then, let the air flow along the surface from the outside, wet sheet (3) Form a nearly uniform negative pressure state on the entire surface of the wet sheet (3) Adsorb and holdIt is what I did.
  Therefore, since the raw material liquid is drawn by the net while being subjected to the uniform dispersion action of the fibers by stirring, the texture of the wet sheet thus obtained is in the best state without flocs, and the fibers are uniform. In a state of being dispersed in the paper, they are well entangled with each other.TakeTherefore, the required strength can be obtained uniformly over the entire surface.
  In addition, since the wet sheet is held by negative pressure suction by the sheet suction surface, the wet sheet is sucked all over the surface at the same time and with a uniform suction force across the entire surface, and the fibers are not yet bound to each other. Even wet sheets that are very easy to tear can be sucked and held smoothly without being torn or wrinkled by suction.
[0014]
  In addition to the requirement of the said Claim 1, the manufacturing method of the sheet-like member of Claim 2 is the said sheet | seat adsorption surface. (112) There is a gap through which air flows (129) Is formed in multiple layersIt is what I did.
  According to the present invention, the entire sheet suction surface can be set to a negative pressure by the gap.
[0015]
  The sheet-like member manufacturing method according to claim 3 is the wet sheet in addition to the requirements of claim 1 or 2. (3) Sheet adsorption surface when adsorbing and holding (112) The flow of air flowing through Sheet adsorption surface (112) It is the air flow which flows toward the center from the outside.
  According to the present invention, the air flowing from the outside toward the center in the gap is substantially uniform in the circumferential direction, so that the adsorption force does not deviate.
[0016]
  Claim4The manufacturing method of the sheet-like member described inIn addition to the requirements of claim 1, 2 or 3, in producing the sheet-like member, in addition to the paper making step, paper was taken up.Wet sheet(3)Press dehydration process and / or wet sheet dewatering by pressing(3)Heating and drying step of drying by heatingMade,
  SaidDuring the pressing in the pressing step and / or during the heating in the heating and drying step, a wet sheet(3)InSuction head (87) byBy applying negative pressure, exudation water and volatile water are positively removed.
  Therefore, moisture exuded by pressing and moisture evaporated by heating are positively removed by negative pressure, so that dehydration and drying proceed quickly, and dehydration and drying on the wet sheet are performed uniformly over the entire surface, Further, the drying for each wet sheet becomes uniform, and it becomes practically possible to set the heating temperature low as the drying proceeds promptly.
[0017]
  Claim5The manufacturing method of the sheet-like member ofIn addition to the requirements of claim 4, the wet sheet (3) IsPulp liquid(P) Is used as a raw material, andHeating temperature in heat drying processIsWithin 30 ° C to 100 ° CSet toIs.
  In other words, in the present invention, the general dye applied to the fiber of the wet sheet is heated at a temperature that does not change or discolor, and thus heating at such a low temperature is practically possible. This is because the drying speed is increased by applying a negative pressure to the wet sheet during pressing or heating.
[0018]
  The sheet-like member manufacturing method according to claim 6 is characterized in that, in addition to the requirements of claim 1, 2, 3, 4 or 5, the papermaking net cup (37) The wet sheet (3) After the finishing of the paper is finished, the paper net cup is (37) The inside is filled with water and the net (39) Is soaked in water.
  By doing in this way, it can prevent reliably that a papermaking cup is clogged.
[0019]
  Claim7The sheet-like member manufacturing apparatus described in 1 is a raw material liquid having an open bottom surface.(P)Is insertedStock inlet (7)When,
  Netting on the upper opening(39)Is stretched and saidStock inlet (7)Paper cups that can be joined and separated from below(37)When,
  Stock inlet (7)Stirring means provided in the interior;
  The netting cup(37)A drainage channel leading to
  Net (39) Wet sheet drawn on top (3) Hold and transportSeat carrier(71)And
  Paper net cup(37)ButStock inlet (7)Combined withStock inlet (7)Raw material liquid(P)And stirring with the stirring means, and the raw material liquid while stirring(P)Net(39)Paper net by draining through(39)Wet sheet on(3)Take this wet sheet(3)The seat carrier(71)Hold and transfer to next processAn apparatus for manufacturing a sheet-like member,
  The sheet carrier (71) The sheet adsorption surface (112) Adsorption head with (87) This suction head consists of (87) Is
  Outer shell with open bottom (89) When,
  This outer shell (89) A net provided to close the opening of
  A divider that overlaps the net from above (99) When,
  This divider (99) A mounting pipe that opens downward and serves as an intake passage (111) And
  This mounting pipe (111) Partition plate due to negative pressure (99) Air above the partition plate (99) Sewing the above mesh from around the mounting pipe (111) The sheet adsorption surface (112) The whole is a negative pressure wet sheet (3) To hold the adsorptionIt is a thing.
  According to this invention,The structure is such that the raw material liquid is stirred above the papermaking net and the raw material liquid is extracted from below the papermaking net. There is no fear.
  Also,In the suction head, when the suction starts from a state in which the sheet suction surface is lightly in contact with or close to the wet sheet, the portion corresponding to the intake path is formed by the net that blocks the lower surface opening of the outer shell. In addition to the negative pressure, the air above the partition plate flows downward from the periphery of the partition plate and flows so as to lick the inside of the sheet suction surface, whereby the entire sheet suction surface becomes negative pressure. In particular, since the air flowing from the outside toward the center after sewing the mesh is substantially uniform in the circumferential direction, negative pressure is not offset. Therefore, since the wet sheet is adsorbed on the entire surface at substantially the same time and with a uniform intake force on the entire surface, even if the wet sheet is very easy to tear because the fibers are not yet bound, It is adsorbed and held smoothly without becoming. In addition, since a uniform intake force is applied to the entire surface, dehydration of the wet sheet can be performed without unevenness.
[0020]
  Claim8The sheet-shaped member manufacturing apparatus according to claim 1, wherein7In addition to the requirements listed,SaidThe net,A plurality are provided overlapping each other,Sheet adsorption surface (112) With multiple voids (129) Are formed in layers, andMultiple nets(103,105,107)Is,Fine objects are located belowBe provided asIs.
  Accordingly, the coarse mesh surely forms a void through which air flows, and the strength of the mesh guarantees the void, while the mesh directly touching the wet sheet is fine so that it is conspicuous on the wet sheet. There is no risk of mesh.
[0021]
  The sheet-like member manufacturing apparatus according to claim 9 includes the attachment pipe in addition to the requirements of claim 7 or 8. (111) The sheet adsorption surface (112) Is provided in the middle of
  Wet sheet (3) When adsorbing and holding the air, the air accompanying the adsorbing action (112) Void (129) Inside wet sheet (3) It is made to flow from the outside toward the center along the surface.
  According to the present invention, the air flowing from the outside toward the center in the gap is substantially uniform in the circumferential direction, so that the adsorption force does not deviate.
[0022]
  Claim10The sheet-like member manufacturing apparatus ofIn addition to the requirement according to claim 7, 8 or 9, the manufacturing apparatus has made paper.Wet sheet(3)For heating and dryingHeating plate (53)TheFurther provided, and the netting cup (37) In addition to the drainage channel, a water supply channel is also connected.
  Wet sheet (3) The heating plate (53) When pressure bonding to the suction head (87) Sheet adsorption surface (112) By wet sheet (3) This is to hold and crimp theSuction head after processing(87) IsThe next wet sheet(3)HoldIn advancePaper net cup(37) WhenJoindo it, Woven net cup(37) InsideInBy supplied waterAt least sheet adsorption surface(112) ButWater coolingBe doneIt is what I did.
  Therefore, when the sheet carrier holds the wet sheet, the sheet holding surface of the sheet carrier is always in a thermal equilibrium state, so this sheet holding surface does not affect the drying of the wet sheet, and the subsequent press means Thus, it is possible to correctly manage the progress of dehydration and drying by heating means, and it is possible to ensure that all wet sheets are uniformly dried.
[0023]
  Claim11The sheet-like member manufacturing apparatus ofRequirements according to claim 7, 8, 9 or 10 In addition, the manufacturing equipment was scrapedWet sheet(3)Pressdo itPress plate to dehydrate(51) Further comprising
  thisPress plate(51)On top ofIsOne end isPress plate (51)Fixed to,On the other endWeight (59)ButAttachedPeeling aid sheet(57) Is provided,
  Wet sheet (3) When dewatering the suction head (87) Sheet adsorption surface (112) Wet sheet held by (3) The press plate (51) Peeling aid sheet (57) Pressed from above to dehydrateIs.
  Therefore, in this apparatus, when the press treatment is finished and the sheet carrier is separated from the press plate, the peeling assist sheet is initially pulled up together with the wet sheet, but the wet sheet immediately warps in a bow shape due to the load on both ends. Is naturally peeled off and settles on the upper surface of the press plate. As a result, the sheet carrier can smoothly separate only the wet sheet from the press plate, and the surface of the wet sheet can be taken up in a smooth state, whereby a high quality sample sheet can be obtained.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
  Below, the papermaking sample sheet manufacturing apparatus 1 which concerns on embodiment of this invention is demonstrated according to drawing. In the papermaking sample sheet manufacturing apparatus 1, one thin papermaking sample sheet is created for each cycle operation. Reference numeral 3 (see FIGS. 4 and 6) denotes a disc-shaped wet sheet, and the wet sheet 3 is dried to obtain a target papermaking sample sheet.
[0025]
  Reference numeral 5 denotes a machine frame of the papermaking sample sheet manufacturing apparatus 1, and the right end of the top plate 5a (the direction toward the right in FIG. 1 is the right side, and the front side is the front as viewed in the same figure. The stock inlet 7 is fixed to the direction). A suction pump 9 is installed on the bottom plate 5b of the machine frame 5, and a net lifting / lowering cylinder 11 composed of a two-way type air cylinder is attached to the right end of the bottom plate 5b so as to face upward. Reference numeral 5 c denotes an intermediate base of the machine casing 5. The intermediate base 5 c has a rectangular frame shape that is long in the left-right direction, and is provided horizontally at a substantially intermediate position in the vertical direction of the machine casing 5.
[0026]
  The stock inlet 7 (see FIGS. 1, 2, and 5) has a cylindrical shape that is long in the vertical direction, is coaxial with the axis of the netting lifting cylinder 11 and passes through the top plate 5a of the machine frame 5. Are arranged to be. A flange 7a having a circular band shape is provided at the lower end of the stock inlet 7, and a packing 13 is attached to the lower surface of the flange 7a. 15 is stock inlet7The cover board which obstruct | occluded the upper surface of is shown.
[0027]
  An air injection pipe 17 passes through the center of the lid plate 15, and a pulp liquid automatic charging pipe 19 and a pulp liquid manual charging pipe 21 pass through a position off the center. The lower end of the pulp liquid automatic charging pipe 19 is cut obliquely, and the leading end 19 a of the cut surface extends to a position above the lower end surface of the stock inlet 7 to some extent. A plurality of injection holes 17a (see FIG. 5) that open to the side are formed in the lower end portion of the air injection pipe 17, and the injection holes 17a are connected to the lower end surface of the stock inlet 7 and the pulp liquid automatic input pipe. It is located at the height of the middle of the 19 tip 19a.
[0028]
  A stocker 23 is attached to the upper end of the pulp liquid automatic charging pipe 19, and the stocker 23 can store the pulp liquid P for up to five papermaking sample sheets. A pulp liquid dropping valve 25 of electromagnetic opening / closing type is inserted in the pulp liquid automatic charging pipe 19, and a front end portion of another air injection pipe 27 is inserted immediately above the pulp liquid dropping valve 25. Also stocker23This stocker is located near the bottom of the inside.23A bubble diffusing plate 29 (see FIG. 1) having a disk shape with a diameter smaller than the inner peripheral diameter is arranged in a horizontal direction.
[0029]
  When dropping the pulp liquid P in the stocker 23, the pulp liquid dropping valve 25 is opened. Prior to this dropping, high-pressure air is supplied from the air injection pipe 27 into the stocker 23, and the pulp liquid P in the stocker 23 is sufficiently stirred, so that all the fibers contained in the pulp liquid P are collected. I am trying not to be dropped. The air sprayed into the stocker 23 rises as bubbles and hits the bubble diffusion plate 29 and diffuses to the surroundings. Thereby, the pulp liquid P in the stocker 23 is evenly stirred.
[0030]
  The lower end of the pulp liquid manual charging pipe 21 is located higher than the lower end of the pulp liquid automatic charging pipe 19, and a funnel 31 is provided at the upper end of the pulp liquid manual charging pipe 21. The funnel 31 and the pulp liquid manual injection pipe 21 are for manually inputting the pulp liquid P into the stock inlet 7 and are different from the pulp liquid P stored in the stocker 23, for example. It is used when it is necessary to produce a sample sheet for the pulp liquid, and a predetermined amount is measured and added.
[0031]
  Reference numeral 32 denotes a pulp liquid drop detection sensor. This pulp liquid dropping amount detection sensor 32 is for measuring the amount of pulp liquid P dropped from the stocker 23, and penetrates the cover plate 15 of the stock inlet 7, and its tip electrode is the pulp liquid automatic charging pipe 19. It is located at a position higher than the tip 19a.
[0032]
  A four-port pipe joint 35 is fixed to an upper end portion of the piston rod 33 of the paper net lifting cylinder 11, and a paper net cup 37 is attached to the pipe joint 35. The papermaking net cup 37 has a circular deep dish shape whose upper surface is open, and a circular band-shaped flange 37a protruding outward is provided at the upper opening. An upper opening surface of the papermaking net cup 37 is covered with a papermaking net 39 having a mesh size of about 100, and a circular packing 41 is attached to the flange 37a with the outer periphery of the papermaking net 39 sandwiched. And the hole 37b is formed in the bottom part of the papermaking net cup 37, and the upper port of the pipe joint 35 is connected to this hole 37b. A first vacuum pipe 43 extending from the suction port of the suction pump 9 is connected to one side port of the pipe joint 35.
[0033]
  Accordingly, the papermaking net cup 37 is positioned directly below the stock inlet 7 and is moved in the vertical direction by driving the papermaking net elevating cylinder 11, and this movement is caused by the packing 41 being an intermediate base as shown in FIG. It is performed between a lowered position located slightly higher than 5c and a raised position coupled to the stock inlet 7 as shown in FIG. 5 and indicated by a two-dot chain line in FIG. When the netting cup 37 is in the raised position, the packing 41 is brought into close contact with the packing 13 of the stock inlet 7.
[0034]
  When the papermaking net cup 37 is in the raised position, as shown in FIG. 5, the lower opening of the stock inlet 7 is closed with the papermaking net cup 37 to form a substantially sealed space. Then, the paper net 39 is located near the lower end of the space.
[0035]
  Reference numeral 45 denotes an overflow tray. The overflow tray 45 has a circular dish shape that is slightly larger than the papermaking net cup 37 and is provided so as to surround the papermaking net cup 37, and a drain pipe 47 is connected to the bottom thereof.
[0036]
  On the upper surface of the intermediate base 5c, a press plate 51 is fixed immediately to the left side of the trajectory of the papermaking net cup 37, a heating plate 53 is attached to the left side of the press plate 51, and a removal cup 55 is attached to the left side thereof. It has been. The press plate 51 is for exuding and removing internal moisture by pressing the wet sheet 3, and is formed of a relatively thick flat metal plate, and a peeling assist sheet 57 is covered on the upper surface thereof. The peeling auxiliary sheet 57 is made of a material having good slipperiness such as a Teflon (trade name) sheet, and its right end is fixed to the right side of the press plate 51 and its left end extends to some extent below the press plate 51. A weight 59 having an appropriate weight is attached here.
[0037]
  The heating plate 53 is for heating and drying the wet sheet 3 and is also formed of a relatively thick flat metal plate, and a heater 61 is attached to the lower surface thereof. 61 is heated. This heating temperature is set according to the quality of the sampled pulp liquid P, and when it is not desired to give the wet sheet 3 strong thermal denaturation, the heating temperature is preferably set to 100 ° C. or lower. For example, in the case of colored pulp, the range is 30 ° C to 100 ° C. In particular, when the pulp liquid is colored yellow, the temperature is about 50 ° C. to 65 ° C., preferably about 60 ° C. Of course, the heating temperature can be set to 100 ° C. or higher when thermal denaturation can be ignored to some extent, such as when the target sample sheet is used only for checking the fiber concentration.
[0038]
  The removal cup 55 is means for reliably removing the wet sheet 3 sucked and held by the suction head, which will be described later, from the suction head, and has substantially the same structure as the paper making net cup 37. That is, the removal cup 55 has a circular deep dish shape with an upper surface opened, and a circular flange 55a projecting outward is provided at the upper opening. The upper opening surface of the removal cup 55 is covered with a wire mesh 63 having a mesh size of about 100. A second vacuum pipe 65 is connected to a hole (not shown) formed in the bottom of the removal cup 55, and this second vacuum pipe 65 is connected to a suction port of the suction pump 9 together with a third vacuum pipe described later. ing.
[0039]
  The upper surface of the papermaking net cup 37, the upper surface of the press plate 51, the upper surface of the heating plate 53, and the upper surface of the removal cup 55 that are in the lowered position are all located in the same horizontal plane.
[0040]
  Reference numeral 71 denotes a sheet carrier (see FIG. 1), and the sheet carrier 71 sucks and holds the wet sheet 3 drawn on the paper making net 39 and conveys it. Reference numeral 73 denotes a moving base of the sheet carrier 71. The moving base 73 moves on a guide rail 75 that is supported by the machine casing 5 and extends in the left-right direction. A motor 77 is attached to the rear surface of the moving base 73, and a pinion gear (not shown) rotated by the motor 77 meshes with a rack 79 installed on the machine frame 5, and the motor 77 rotates. The moving base 73 is moved in the left-right direction.
[0041]
  A suction head elevating cylinder 81 comprising a two-way type air cylinder is mounted in a downward posture on a horizontal wall that forms the upper end of the moving base 73, and an upper port of a three-port pipe joint 85 is attached to the tip of the piston rod 83. Is fixed. A suction head 87 (see FIGS. 3, 7, and 8 for details) is attached to the lower port of the pipe joint 85. This suction head 87 is a mechanism that directly bears the suction of the wet sheet 3.
[0042]
  Reference numeral 89 denotes an outer shell of the suction head 87. The outer shell 89 has a substantially circular dish shape with an open bottom surface, and a circular hole 91a is formed at the center of the top wall 91. The lower end portion of the pipe joint 85 is fixed so as to communicate with. An intake hole 91b is formed at a position off the center of the top wall 91, and a valve mounting pipe 93 is fixed so as to communicate with the intake hole 91b. An intake air amount adjustment valve 95 is attached to the valve attachment pipe 93.
[0043]
  Inside the outer shell 89, a metal upper partition plate 97 and lower partition plate 99, a rubber plate 101, an upper net 103, an intermediate net 105, and a lower net 107 are arranged in a hierarchy from the top. . Among these, the diameter of the upper partition plate 97 is substantially equal to the inner diameter of the outer shell 89, and the diameters of the other members are somewhat smaller than the diameter of the upper partition plate 97. The lower partition plate 99 is relatively thick, and a rubber plate 101 is bonded to the lower surface of the lower partition plate 99. A circular insertion hole 97 a is formed at the center of the upper partition plate 97. A mounting hole 109 is formed at the center of the lower partition plate 99 and the rubber plate 101, and the lower end portion of the mounting pipe 111 is fitted and fixed to the mounting hole 109.
[0044]
  The upper partition plate 97 is fixed to the lower partition plate 99 by a plurality of bolts 113, and a space 117 is provided between the upper partition plate 97 and the lower partition plate 99 by a spacer 115. The upper end portion of the attachment pipe 111 protrudes upward through the insertion hole 97 a of the upper partition plate 97. The upper end portion of the attachment pipe 111 is screwed into the lower port of the pipe joint 85, whereby the upper and lower partition plates 97 and 99 and the rubber plate 101 are disposed in the outer shell 89.
[0045]
  A space 119 with the head of the bolt 113 as a spacer is left between the top wall 91 of the outer shell 89 and the upper partition plate 97, and the periphery of this space 119 is hermetically closed by filling with silicon 121. It is. The attachment pipe 111 is inserted through the insertion hole 97a with a sufficient margin around it. Therefore, the upper space 119 and the lower space 117 communicate with each other through the insertion hole 97a. Further, the lower surface of the rubber plate 101 is positioned at substantially the same height as the lower surface of the outer shell 89.
[0046]
  Reference numeral 123 denotes a circular band-shaped gasket. Two gaskets 123 are arranged below the peripheral edge of the upper partition plate 97 in a state of being overlapped. A bolt through hole 91 c is formed in a portion along the periphery of the top wall 91 of the outer shell 89, and the bolt 125 passing through the bolt through hole 91 c is formed by the silicon 121 layer and the peripheral edge of the upper partition plate 97. The bolt through hole 97b formed in the portion and the bolt through hole 123a formed in the peripheral portion of the gasket 123 are passed through, and the tip of the bolt 125 is fixed to a net frame described later.
[0047]
  A mesh 8 mesh is used for the upper network 103, and a mesh 12 mesh is used for the middle network 105. The lower net 107 has a mesh number 60. Reference numeral 127 denotes a metal net frame. The net frame 127 is formed in an annular shape having substantially the same size as the gasket 123, and the peripheral portion of the lower net 107 is brazed to the lower surface of the net frame 127. Yes.
[0048]
  Then, with the middle net 105 and the upper net 103 placed on the lower net 107, the net frame 127 is superimposed on the gasket 123 from below, and in this state, the tip of the bolt 125 is screwed into the screw hole 127a of the net frame 127. Screwed into. As a result, the lower surface of the outer shell 89 is covered with the lower net 107, so that the suction head 87 has a flat air gap 129 consisting of three layers of nets, in particular, a large number of meshes of the upper net 103 having a coarse mesh and the middle net 105. And the lower end of the attachment pipe 111 opens toward the center of the gap 129.
[0049]
  A thin mask sheet 131 (shown only in FIG. 3) is attached to the lower surface of the lower net 107. The mask sheet 131 has an annular shape, and its outer diameter is substantially the same as the diameter of the lower net 107, and its inner diameter is slightly smaller than the diameter of the wet sheet 3. Therefore, the lower net 107 is exposed downward with a slightly smaller area than the wet sheet 3. As can be seen from FIG. 7, the portion excluding the peripheral portion of the lower surface of the lower net 107 is located below the lower surface of the outer shell 89.
[0050]
  Since the suction head 87 has such a structure, only the circular area exposed from the mask sheet 131 in the lower net 107 becomes the sheet suction surface 112 having air permeability. Inside the outer shell 89, with the intake air amount adjusting valve 95 as one end, the valve mounting pipe 93 -the space 119 -the insertion hole 97a -the space 117 -the outer periphery of the lower partition plate 99 -the gap 129 -the inner side of the mounting pipe 111 The forward air passage 132 is formed.
[0051]
  The horizontal movement of the sheet carrier 71 is performed between the positions directly above the paper making cup 37, the press plate 51, the heating plate 53, and the removal cup 55 by the suction head 87. Further, when the suction head 87 is moved up and down by driving the suction head elevating cylinder 81 and is pulled up, as shown in FIG. 1, the suction head 87 is separated to some extent above the horizontal plane on which the press plate 51 and the like are located. When the piston rod 83 protrudes from this state, it is pressure-bonded to one of the paper making cup 37, the press plate 51, the heating plate 53, and the removal cup 55.
[0052]
  FIG. 9 shows a piping system. A netting dewatering valve 133 is inserted in the first vacuum pipe 43 described above. A drainage pipe 135 and a water supply pipe 137 are joined to a part of the first vacuum pipe 43 on the side of the papermaking net dehydrating valve 133 to the papermaking net cup 37, and the waterfall pipe 139 is connected to the waterfall pipe 139. 137 is provided with a water supply valve 141, respectively. An air release valve 143 is provided at the other side port of the pipe joint 35 to which the papermaking net cup 37 is attached.
[0053]
  Reference numeral 145 denotes a sheet suction valve provided in the second vacuum pipe 65. A third vacuum pipe 147 extending from the suction port of the suction pump 9 is connected to a side port of the pipe joint 85 to which the suction head 87 is attached, and the suction head negative pressure valve 149 is connected to the third vacuum pipe 147. Is inserted in parallel with the sheet suction valve 145. The above-described netting dewatering valve 133, water dropping valve 139, water supply valve 141, air release valve 143, sheet suction valve 145, and suction head negative pressure valve 149 are all electromagnetic open / close types. The papermaking sample sheet manufacturing apparatus 1 is configured as described above.
[0054]
  Next, the operation of the papermaking sample sheet manufacturing apparatus 1 will be described in order (see FIGS. 10 to 14).
(A. Initial state)
  In the initial state, the papermaking net cup 37 stands by at the lowered position, and the suction head 87 stands by at a position directly above the papermaking net cup 37. The control valves are “closed”, and the suction pump 9 is not in operation. The heating plate 53 is heated up by turning on the main power and maintains the set temperature. In the stocker 23, a required amount of the pulp liquid P sampled from the papermaking line is put.
[0055]
(B. Thermal equilibrium treatment of suction head)
  When the start switch is turned on from the initial state, the suction head 87 is lowered and pressed against the papermaking net cup 37 (see FIG. 10), and a closed space is formed by the suction head 87 and the papermaking net cup 37. . When it is detected by a sensor (not shown) that the suction head 87 is crimped to the paper making net cup 37, the suction head negative pressure valve 149, the water supply valve 141, and the air release valve 143 are each opened and the suction pump 9 is turned on. Start driving. As a result, fresh water is supplied to the closed space through the water supply pipe 137 and the first vacuum pipe 43, and this fresh water passes through the three layers of the nets 107, 105, 103 of the suction head 87 and then passes through the pipe joint 85. It is sucked into the suction pump 9 through the three vacuum pipes 147. Therefore, the three layers of metal nets 107, 105, 103, the rubber plate 101, etc., which are the lower surface of the suction head 87, are thermally balanced by the flow of the clean water.
[0056]
  When one minute has passed since the suction head 87 was pressure-bonded to the papermaking net cup 37, the water supply valve 141 was closed and the water supply was stopped, and the suction head 87 was returned to the upper side (the papermaking net cup 37). The suction head negative pressure valve 149 and the air release valve 143 are both “closed”, and the operation of the suction pump 9 is stopped. Then, the sheet carrier 71 is moved to a position directly above the press plate 51 and waits here.
[0057]
(C. Pulp liquid input and stock inlet)
  When it is detected by a proximity switch (not shown) that the suction head 87 has come to a position directly above the press plate 51, the papermaking net cup 37 is moved to the raised position and is crimped to the stock inlet 7 from below. A closed space is formed by the netting cup 37 and the stock inlet 7. Next, the water supply valve 141 is “opened” and the fresh water 151 is supplied to the closed space. When the liquid level of the fresh water 151 reaches the tip 19a of the pulp liquid automatic charging pipe 19 (see FIG. 5), a level meter using the pulp liquid automatic charging pipe 19 as an electrode detects the completion of the supply of fresh water, The water supply valve 141 is “closed” and the water supply is stopped. In this state, as can be seen from FIG. 5, the injection hole 17 a of the air injection pipe 17 is located in the fresh water 151.
[0058]
  When the water supply to the stock inlet 7 is stopped, high-pressure air is injected from the air injection pipe 27 into the stocker 23, and the pulp liquid P in the stocker 23 is stirred. When 15 seconds have elapsed since the start of the stirring, the pulp liquid dropping valve 25 is “opened” and the pulp liquid P is dropped into the stock inlet 7. When the liquid level of the fresh water 151 rises by this dropping and comes into contact with the lower end of the pulp liquid dropping amount detection sensor 32, the pulp liquid dropping valve 25 is "closed" and the dropping of the pulp liquid P is stopped. The injection of high-pressure air by the injection pipe 27 is also stopped. Thereby, the pulp liquid P for one papermaking sample sheet is added to the fresh water 151.
[0059]
  As soon as the dropping of the pulp liquid P is stopped, high-pressure air is injected into the stock inlet 7 from the air injection pipe 17, and the pulp liquid P and fresh water 151 are sufficiently stirred and mixed by this injection. Accordingly, the dropped pulp liquid P is diluted with the fresh water 151 and stirred with the bubbles of the pneumatic air to be jetted to uniformly disperse the fibers, that is, stock inlet. This process is continued for about 10 seconds.
[0060]
(D. Wet sheet makingTakeRito dehydration)
  When 10 seconds have elapsed since the pulp liquid P was dropped, the water supply valve 139 was “opened” while the supply of high-pressure air was continued, and the diluted pulp liquid P in the closed space became the first vacuum pipe. 43 and the drainage pipe 135 are naturally drained. At this time, the fibers in the pulp liquid P are made by the paper making net 39 to form the wet sheet 3 (see FIG. 4).
[0061]
  When the level meter detects that the water level in the closed space has dropped due to this falling water and the liquid level has reached the tip 19a of the pulp liquid automatic charging pipe 19, the supply of high-pressure air is stopped. When 30 seconds have elapsed, the water drop valve 139 is “closed”, the paper net dewatering valve 133 is “opened”, and the suction pump 9 starts operation. Thereby, the moisture adhering to the papermaking net 39 and the moisture above the saturated moisture of the wet sheet 3 are removed.
[0062]
(E. Wet sheet pickup)
  When this dewatering is performed for 2 seconds, the papermaking net cup 37 is returned to the lowered position (separated from the stock inlet 7), and then the sheet carrier 71 is moved, so that the suction head 87 is moved to After passing through the upper position, the paper mesh cup 37 is again crimped. Here, the paper net dewatering valve 133 is “closed”, and the suction head negative pressure valve 149 and the air release valve 143 are “open”. As a result, the space inside the papermaking net cup 37 is opened to the atmosphere and the inside of the suction head 87 becomes negative pressure, and the wet sheet 3 on the papermaking net 39 is sucked and held by the suction head 87.
[0063]
  The suction of the wet sheet 3 by the suction head 87 is specifically performed as follows. When the suction head 87 is pressure-bonded to the papermaking net cup 37, the sheet suction surface 112 is accommodated inside the packing 41 of the papermaking net cup 37 and lightly contacts or approaches the wet sheet 3. Therefore, a closed space is formed by the wet sheet 3, the packing 41, and the sheet suction surface 112. From this state, when the suction head negative pressure valve 149 is opened and the inside of the attachment pipe 111 becomes negative pressure, the central portion of the wet sheet 3 is adsorbed by the sheet adsorption surface 112, and at the same time, the air in the outer shell 89 is partitioned. It goes down from the periphery of the plate 99 and flows to the mounting pipe 111 through the gap 129. Due to this air flow, the entire sheet adsorbing surface 112 becomes negative pressure, and the wet sheet 3 is adsorbed on the sheet adsorbing surface 112 by this overall negative pressure.
[0064]
  As described above, the entire surface of the wet sheet 3 is adsorbed to the sheet adsorbing surface 112 at substantially the same time. This action is possible because the sheet suction surface 112 and the wet sheet 3 are in light contact with each other or are in close proximity to each other, and suction is started from the state where the sheet suction surface 112 is provided. This is because the entire surface 112 can be set to a negative pressure. In particular, the air flowing in the gap 129 from the outside toward the center is substantially uniform in the circumferential direction, so that the suction force is not offset.
[0065]
  Thus, since the adsorption of the wet sheet 3 is performed almost simultaneously and with a uniform suction force over the entire surface, even a wet sheet in which fibers are not yet bound to each other can be broken or wrinkled by the adsorption. There is nothing, and adsorption is held firmly. Since the uniform intake force is applied to the entire surface, dehydration of the wet sheet 3 can be progressed without any unevenness, which is also an important factor that does not cause soot.
[0066]
  The degree of opening of the intake air amount adjustment valve 95 is adjusted to such an extent that the wet seat 3 is not cooled.
[0067]
(F. Dehydration by press)
  Next, after the suction head 87 is moved upward, the sheet carrier 71 is moved to a position directly above the press plate 51, where the suction head 87 is pressed against the press plate 51 with the auxiliary peeling sheet 57 interposed therebetween (FIG. 11). reference). Thereby, the wet sheet 3 is pressed against the press plate 51 to exude moisture, and the thickness is made uniform.
[0068]
  At this time, the pressure with which the suction head 87 presses the wet sheet 3 against the press plate 51 is uniformly applied to the entire surface of the wet sheet 3. That is, the pressure of the suction head 87 is applied to the wet sheet 3 from the lower partition plate 99 and the rubber plate 101 through the upper net 103, the middle net 105, and the lower net 107, and when passing through the three metal nets 103, 105, 107. This is because it is dispersed and finally added through the wire of the lower net 107 which is the finest. In addition, since this pressure passes through the rubber plate 101 in the middle, even if the parallelism between the suction head 87 and the press plate 51 is slightly broken, this breakage is absorbed by the rubber plate 101. Further, since the pressure on the wet sheet 3 is applied in this manner, the wet sheet 3 does not have a noticeable mesh (mesh of the middle net 105 or the upper net 103).
[0069]
  The gap 129 is formed by three metal meshes 103, 105, and 107. In particular, since the upper mesh 103 and the middle mesh 105 have coarse meshes, the strength is high. Even when pressed against the press plate 51, the gap 129 is not crushed. Therefore, even while the wet sheet 3 is being pressed, the air flow in the air passage 132 is ensured, and moisture exuded from the wet sheet 3 is positively removed by this air flow. This pressing is continued for 3 minutes, and the moisture of the wet sheet 3 is reduced to about 15 percent by this pressing process.
[0070]
(G. Water retention of paper nets)
  At a predetermined timing after the suction head 87 escapes from the papermaking net cup 37, the water supply valve 141 is "opened" and water is supplied to the papermaking net cup 37. This water supply overflows to some extent from the papermaking net cup 37. Stop after being continued for a sufficient amount of time. The overflow water is received by the overflow tray 45 and drained from the drain pipe 47. The water supplied to the paper screen cup 37 is held as it is. Accordingly, the net 39 is constantly retained by being immersed in the water stored in the net cup 37, thereby preventing the fibers of the pulp liquid P from adhering to the net 39 and being clogged. The
[0071]
(H. Peeling from the press plate)
  When the pressing process is completed, the suction head 87 is pulled up. At this time, the exfoliation auxiliary sheet 57 is initially lifted together with the wet sheet 3 as shown by a two-dot chain line in FIG. It settles on the upper surface of the press plate 51. As a result, the suction head 87 can smoothly separate only the wet sheet 3 from the press plate 51, and it is possible to prevent the surface of the wet sheet 3 from being roughened as well as not to break this.
[0072]
(I. Heat drying)
  After the suction head 87 is separated from the press plate 51 in this way, the sheet carrier 71 is pressure-bonded to the heating plate 53 through a position directly above the heating plate 53 (see FIG. 12). As a result, the wet sheet 3 is heated and dried, and again, the water evaporated from the wet sheet 3 is positively removed by the suction action of the suction pump 9. In this case, the moisture is removed uniformly over the entire surface, so that no wrinkles occur. This heating is performed for approximately 3 minutes, and the wet sheet 3 is completely dried.
[0073]
  The heat of the heating plate 53 is also transmitted to the suction head 87 through the wet sheet 3, but since the rubber plate 101 is disposed on the three layers of metal nets 107, 105, 103, the rubber plate 101 is considerably insulated. , It is less likely to travel above the lower partition plate 99.
[0074]
  After 3 minutes from the start of heating, the sheet carrier 71 is pulled up. Immediately before the pulling is performed, the sheet suction valve 145 is opened, and a part of the suction force by the suction pump 9 is released to reduce the negative pressure of the suction head 87. Therefore, the wet sheet 3 is easily detached from the suction head 87 in the next removal step.
[0075]
(J. Removal)
  When the suction head 87 is separated from the heating plate 53, the sheet carrier 71 is moved to a position directly above the removal cup 55. Then, the air release valve 143 and the suction head negative pressure valve 149 are set to “closed” to increase the negative pressure suction force at the metal mesh 63 of the removal cup 55, and then the suction head 87 is pressure-bonded to the removal cup 55 (see FIG. 13). ). As a result, the wet sheet 3 that has been held on the sheet suction surface 112 of the suction head 87 until then is sucked by the metal net 63 of the removal cup 55. Next, the paper net dewatering valve 133 is opened, and the suction force of the cup 55 is weakened to facilitate the removal of the wet sheet 3.
[0076]
  Thereafter, after the suction head 87 is pulled up, the sheet carrier 71 is moved to a position just above the papermaking net cup 37 and waits there until the thermal equilibration process starts, and the suction pump 9 stops operating. Then, the paper net dewatering valve 133 and the sheet suction valve 145 are “closed”.
[0077]
  The above operation is repeated to produce a required number of sample sheets. In this case, first, since the sheet suction surface 112 of the suction head 87 is thermally balanced by water cooling, the heated suction head 87 comes into contact with the wet sheet 3 drawn on the paper making net 39 and the wet sheet 3. It is reliably prevented from giving heat denaturation such as rapid drying and discoloration.
[0078]
  In this papermaking sample sheet manufacturing apparatus 1, moisture is leached by pressing before the wet sheet 3 is heated and dried. However, in some cases, the pressing process is omitted and only drying by heating is performed. good.
[0079]
  Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. include.
[0080]
  For example, in the embodiment, a wire mesh is used as a mesh constituting the sheet suction surface of the suction head. However, the mesh is not limited to a normal wire mesh woven with wire, and has a structure with a gap in the cross section. Anything can be used. In particular, when trying to produce a sample sheet or the like to be subjected to the paper strength test defined in JIS (Japanese Industrial Standards), a wire mesh as shown in the embodiment (especially, a coarse mesh such as the above-described upper mesh or medium mesh). If a strong press pressure as specified is applied to the wet sheet while it is attached, the mesh may adhere to the wet sheet, but the surface has very fine irregularities, for example, a paper machine dryer. If a mesh made of synthetic resin called “Cambus” or the like used in is used, even if a strong press pressure is applied, a mesh that is at least more conspicuous than a metal mesh will not be attached.
[0081]
  Further, although high-pressure air is used as the stirring means, the stirring means may be a stirring blade or ultrasonic vibration. Furthermore, in the embodiment, the present invention is applied to a papermaking sample sheet manufacturing apparatus. However, the present invention is not limited to such a sheet, for example, various sheets including synthetic fibers and metal fibers, waste paper raw materials, The present invention can be widely applied to various sheet-like member manufacturing methods and apparatuses, such as sludge and other content analysis sheets, or sheet-like ingredients mainly composed of vermicelli, small fish, seaweed and other ingredients. In this case, there is no question that the target sheet-like member is a so-called sample and a mass-produced product, and it goes without saying that the size of these various sheet-like members is not limited to a particularly small one.
[0082]
【The invention's effect】
  As described above, according to the method for manufacturing a sheet-like member according to claim 1, since the raw material liquid is picked up by the paper net while being subjected to the uniform dispersion action of the fibers by stirring, the raw material liquid was picked up. The wet sheet is in the best condition without flocs, and the fibers are entangled well with the fibers evenly dispersed.TakeTherefore, the required strength can be obtained uniformly over the entire surface.
[0083]
  According to the method for manufacturing a sheet-like member of claim 2, the entire sheet adsorbing surface can be set to a negative pressure by the gap.
[0084]
  According to the manufacturing method of the sheet-like member of claim 3, since the air flowing from the outside toward the center becomes substantially uniform in the circumferential direction, the attracting force is not offset.
[0085]
  Claim4According to the method for producing a sheet-like member, moisture exuded by pressing or moisture volatilized by heating is positively removed by negative pressure, so that dehydration and drying proceed quickly, Drying is performed uniformly over the entire surface, and all the wet sheets are also uniformly dried, so that the heating temperature can be set low as the drying proceeds promptly.
[0086]
  Claim5In this sheet-shaped member manufacturing method, the general dye applied to the fiber of the wet sheet is heated at a temperature that does not change or discolor, and heating at such a low temperature is practically possible. This is because the drying speed is increased by applying a negative pressure to the wet sheet during pressing or heating.
[0087]
  Production of sheet-like member according to claim 6MethodAccording to this, it is possible to reliably prevent clogging of the papermaking net cup.
[0088]
  Claim7According to the sheet-like member manufacturing apparatus, since the raw material liquid is stirred above the papermaking net and the raw material liquid is drawn from the lower part of the papermaking net, it is impossible to make papermaking while stirring the raw material liquid. And there is no possibility of complicating the apparatus.
  AlsoBecause the suction of the wet sheet is performed almost simultaneously and with a uniform suction force on the entire surface, even if the wet sheet is very easy to tear because the fibers are not yet bound, It will be adsorbed and held smoothly without becoming. In addition, since a uniform intake force is applied to the entire surface, dehydration of the wet sheet can be performed without unevenness.
[0089]
  Claim8According to the sheet-like member manufacturing apparatus, the coarse mesh surely forms a void through which air flows, and the strength of the mesh ensures the void, and the mesh that directly touches the wet sheet is fine. Because it is a thing, there is no risk of noticeable mesh on the wet sheet.
[0090]
  According to the sheet-like member manufacturing apparatus of the ninth aspect, the air flowing in the gap from the outside toward the center becomes substantially uniform in the circumferential direction, so that the adsorption force does not deviate.
[0091]
  Claim10According to this sheet-like member manufacturing apparatus, when the sheet carrier holds a wet sheet, the sheet holding surface of the sheet carrier is always in a thermal equilibrium state, so this sheet holding surface affects the drying of the wet sheet. In this case, the subsequent dehydration by the pressing means and the progress of drying by the heating means can be correctly managed, and it is possible to ensure that all the wet sheets are uniformly dried.
[0092]
  Claim11According to the sheet-like member manufacturing apparatus, since the sheet carrier can smoothly separate only the wet sheet from the press plate, and the surface of the wet sheet can be taken up in a smooth state, a high-quality sample sheet can be obtained. Obtainable.
[Brief description of the drawings]
FIG. 1 is a front view of a paper sample sheet manufacturing apparatus according to an embodiment of the present invention, with a part cut away.
FIG. 2 is an enlarged perspective view of a main part of the papermaking sample sheet manufacturing apparatus shown in FIG.
FIG. 3 is an enlarged bottom view of the suction head in the papermaking sample sheet manufacturing apparatus shown in FIG.
4 is an enlarged perspective view of a main part of the papermaking cup in the papermaking sample sheet manufacturing apparatus shown in FIG. 1 with a partially cutaway wet sheet. FIG.
5 is an enlarged longitudinal sectional view of a main part showing a state in which a stock inlet container and a papermaking net cup are coupled in the papermaking sample sheet manufacturing apparatus shown in FIG. 1. FIG.
FIG. 6 is an enlarged front view of a main part showing a state of press processing in the paper making sample sheet manufacturing apparatus shown in FIG. 1;
7 is an enlarged central vertical sectional view of a suction head in the papermaking sample sheet manufacturing apparatus shown in FIG.
8 is an exploded perspective view of the paper making sample sheet manufacturing apparatus shown in FIG. 1 with the suction head partially cut away and enlarged.
FIG. 9 is a diagram showing a piping system of the papermaking sample sheet manufacturing apparatus shown in FIG. 1;
10 is a front view showing a main part of the paper making sample sheet manufacturing apparatus shown in FIG. 1 in a state where a suction head is pressure-bonded to a paper making cup. FIG.
FIG. 11 is a front view showing a main part of the paper making sample sheet manufacturing apparatus shown in FIG. 1 in a state where the suction head is pressure-bonded to a press plate.
12 is a front view showing a main part of the paper making sample sheet manufacturing apparatus shown in FIG. 1 in a state in which a suction head is pressure-bonded to a heating plate. FIG.
FIG. 13 is a front view showing a main part of the paper making sample sheet manufacturing apparatus shown in FIG. 1 in a state where the suction head is removed and pressed against the cup.
[Explanation of symbols]
  1Paper making sample sheet manufacturing equipment (Sheet-like member manufacturing equipment)
  3 Wet sheet (sheet-like member)
  5        Machine frame
  5a      Top board
  5b      Bottom plate
  5c      Intermediate base
  7Stock inlet
  7a      Flange
  9        Suction pump
  11      Net lifting cylinder
  13      Packing
  15      Lid plate
  17Air injection pipe (Stirring means)
  17a    Injection hole
  19      Pulp liquid automatic charging pipe
  19a    tip
  21      Pulp liquid manual injection pipe
  23      stocker
  25      Pulp drop valve
  27      Air injection pipe
  29      Bubble diffuser
  31      funnel
  32      Pulp liquid drop detection sensor
  33      Piston rod
  35      Pipe fittings
  37 Papermaking cup
  37a    Flange
  37b    Hole
  39 Paper net
  41      Packing
  43(First) vacuum pipe (Drainage channel, water supply channel)
  45      Overflow tray
  47      Drain pipe
  51 Press plate (pressing means)
  53Heating plate (Heating means)
  55      Removal cup
  55a    Flange
  57 Peeling aid sheet
  59Weight
  61Heater(Heating means)
  63      Wire mesh
  65      (Second) vacuum pipe
  71 sheet carrier
  73      Moving base
  75      Guide rail
  77      motor
  79      rack
  81      Suction head lifting cylinder
  83      Piston rod
  85      Pipe fittings
  87 Suction head
  89 outer shell
  91      Sky wall
  91a    Hole
  91b    Air intake hole
  91c    Bolt through hole
  93      Valve mounting pipe
  95      Intake air amount adjustment valve
  97      Partition plate (upper side)
  97a    Insertion hole
  97b    Bolt through hole
  99 divider(Lower)
  101    Rubber plate
  103 net
  105 net
  107 Net (fine mesh)
  109    Mounting hole
  111Mounting pipe
  112 Sheet adsorption surface
  113    bolt
  115    Spacer
  117    space
  119    space
  121    silicon
  123    gasket
  123a  Bolt through hole
  125    bolt
  127    Mesh frame
  127a  Screw hole
  129    Void
  131    Mask sheet
  132    Air passage
  133    Paper net dewatering valve
  135Falling water pipe (Drainage channel)
  137Water supply pipe (Water supply)
  139    Water valve
  141    Water supply valve
  143    Atmospheric release valve
  145    Seat adsorption valve
  147    (Third) vacuum pipe
  149    Suction head negative pressure valve
  150    (Second) air release valve
  151    Shimizu
  P Pulp liquid (raw material liquid)

Claims (11)

Paper making mesh cup paper making mesh provided (37) (39) to the starting solution making mesh by passing (P) (39) paper making up that to take the paper making wet sheet (3) on the process only contains,
Thereafter, when receiving the wet sheet (3) from the paper net (39 ) , the wet sheet (3) is sucked and held by the suction head (87) having the sheet suction surface (112). A method for producing a sheet-shaped member,
The paper removal step is performed while stirring the raw material liquid (P) ,
Further, when the suction holding the wet sheet (3) is paper making the sheet adsorbing surface (112) which is substantially formed parallel to the wet sheet (3) to be taken, the air along the surface from the outside flow, to form a substantially uniform negative pressure on the entire surface of the wet sheet (3), the method for manufacturing a sheet-like member, characterized in that the wet sheet (3) to hold the adsorption. The sheet suction surface (112) There is a gap through which air flows (129) The sheet-shaped member manufacturing method according to claim 1, wherein the plurality of layers are formed to form a plurality of layers. The wet sheet (3) Sheet adsorption surface when adsorbing and holding (112) The air flow flowing through the (112) The method of manufacturing a sheet-like member according to claim 1, wherein the airflow flows from the outside to the center. Wherein in manufacturing the sheet-like member, in addition to the paper making-up step, heating the press dewatering step and / or wet sheet (3) for dewatering by pressing the wet sheet (3) took paper making in a heating drying step of drying comprises Nde including,
During said heating in the press and / or in the heat-drying step in the press process, wet sheet (3) so as to actively remove the exudation moisture and volatile water by applying a negative pressure by the suction head (87) The method for producing a sheet-like member according to claim 1, 2 or 3 . The wet sheet (3) are those taken making paper pulp solution (P) as a raw material, also the heating temperature in the heating and drying step, to be set in the range of 30 ° C of 100 ° C The manufacturing method of the sheet-like member according to claim 4 characterized by things. The paper making net cup (37) is filled with water in the paper making net cup (37) after the paper making of the wet sheet (3) is once finished and before the next paper making starts. 6. The method for producing a sheet-like member according to claim 1 , wherein the papermaking net (39) is immersed in water . Stock inlet (7) where the lower surface is opened and the raw material liquid (P) is charged ,
An upper opening surface to the paper making mesh (39) is stretched paper making mesh cup that is coupled detachably coupled from below to the stock inlet (7) (37),
Stirring means provided in the stock inlet (7) ;
A drainage channel leading to the netting cup (37) ;
A sheet carrier (71) that holds and conveys the wet sheet (3) drawn on the net (39) ;
And stirred with a paper making mesh cup (37) is a raw material liquid to the stock inlet (7) in a state bound to the stock inlet (7) (P) said stirring means was charged, the raw material solution while the stirring (P ) the paper making mesh (39) to pick up the paper making wet sheet (3) on the paper making mesh by draining (39) through the following the wet sheet (3) holds the seat carrier (71) An apparatus for manufacturing a sheet-like member that is transferred to the process of
It said seat carrier (71) is made includes a suction head having a sheet adsorbing surface (112) (87), the suction head (87) is
An outer shell (89) with an open bottom ;
A net provided to close the opening of the outer shell (89) ;
A partition plate (99) overlapping the net from above ,
Opening downward of this partition plate (99) , and provided with a mounting pipe (111) serving as an intake passage ,
It flows into the mounting pipe (111) air above the partition plate (99) by the mounting pipe (111) is a negative pressure is sewn eyes of the net from around the partition plate (99), sheet by such a configuration An apparatus for producing a sheet-like member, characterized in that the entire suction surface (112) has a negative pressure to suck and hold the wet sheet (3) . The network is provided with a plurality on top of each other, a plurality of voids in the sheet attraction surface (112) (129) is intended to be formed to form a layer, and a plurality of networks (103, 105, 107) are those having a small eye The apparatus for producing a sheet-like member according to claim 7, wherein the apparatus is provided so as to be positioned on a lower side. The mounting pipe (111) The sheet adsorption surface (112) Is provided in the middle of
Wet sheet (3) When adsorbing and holding the air, the air accompanying the adsorbing action (112) Void (129) Inside wet sheet (3) The sheet-like member manufacturing apparatus according to claim 7 or 8, wherein the apparatus flows along the surface of the sheet from the outside toward the center. The manufacturing apparatus further includes a heating plate (53) for heating and drying the wet sheet (3), and the papermaking net cup (37) is connected to a water supply channel in addition to a drainage channel. Is made up of,
When the wet sheet (3) is pressure-bonded to the heating plate (53) , the wet sheet (3) is sucked and held by the sheet suction surface (112) of the suction head (87) and pressed. There ended suction head (87) is per to hold the next wet sheet (3), in combination with pre-paper making mesh cup (37), the water supplied to the paper making mesh cup (37) in At least sheet adsorbing surface (112) is manufactured of a sheet member according to claim 7, 8 or 9 further characterized in that the water-cooled. The manufacturing apparatus further includes a press plate (51) for pressing and dewatering the wet sheet (3) that has been scraped off ,
On the upper surface of this press plate (51) , there is provided an auxiliary peeling sheet (57) with one end fixed to the press plate (51) and the other end attached with a weight (59) ,
In dehydrating the wet sheet (3), a wet sheet (3) which holds the sheet suction surface of the suction head (87) (112), against the top of the peeling auxiliary sheet press plate (51) (57) The apparatus for producing a sheet-like member according to claim 7, 8, 9 or 10, wherein dehydration is performed .

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