JP4515196B2 - Pulp crusher - Google Patents

Description

  The present invention relates to a pulp crusher for crushing pulp for an absorber.

2. Description of the Related Art Conventionally, a pulverizer for pulverizing sheet-like pulp has been used in the manufacture of an absorbent used for sanitary goods such as paper diapers. For example, in Patent Document 1, absorption is performed by laminating a sheet-shaped pulp wound around a drum by unwinding (pulverizing) with a defibrating machine (pulverizing device) and blowing the defibrated pulp onto a nonwoven fabric. A technique for forming a body liquid-absorbing layer is disclosed.
JP 2001-309945 A

  By the way, in such a pulverizing apparatus, when the end portion of the supplied pulp is pulverized, the pulp piece after passing through the feed roller is pulled by the pulverization blade and is not pulverized in the pulverization chamber provided with the pulverization blade. There is a risk of entering. Moreover, even if the pulp pieces are not caught, the moving speed of the pulp is increased by the rotational force of the pulverizing blade, and the amount of pulverized pulp generated per unit time increases from the specified amount and the pulverized pulp becomes rough. End up. Furthermore, since the preceding pulp end part and the following pulp are separated and no pulverized pulp is produced during that time, the amount and quality of the pulverized pulp produced per unit time vary, and the quality of the formed absorbent body The uniformity of the will deteriorate.

  For this reason, the work of stopping the apparatus before the end of the pulp ends and removing the end of the pulp from the feed roller is carried out, but the cause of the difficulty in improving the yield while reducing the efficiency of the grinding operation It has become. In addition, although the fall of the efficiency of a grinding | pulverization operation | work is prevented by providing two pulp supply mechanisms and making it operate | move alternately, an apparatus will enlarge.

  Until a coarsely pulverized pulp becomes a predetermined size or less by providing a screen in which many fine openings are formed at the discharge port of the pulverized pulp from the pulverization chamber and providing another pulverization mechanism in the pulverization chamber. In some cases, re-pulverization is repeated in the pulverization chamber, or two pulverization devices of coarse pulverization and fine pulverization are used in parallel so that the production of pulverized pulp is not completely interrupted. However, even in these methods, the amount of pulverized pulp produced per unit time is not maintained constant, and the pulverized pulp needs to be measured before the absorber is formed.

  The present invention has been made in view of the above problems, and aims to maintain a constant supply rate of pulp in the vicinity of the end of the pulp and to improve the amount of pulverized pulp produced per unit time and uniformity of quality. Yes.

The invention according to claim 1 is a pulp pulverizing apparatus for pulverizing the absorbent pulp, a pulp supply mechanism for supplying sheet-like pulp in a predetermined supply direction, and the supply in parallel with the pulp. direction a circular cylindrical you around the vertical axis of rotation, a grinding cylinder for grinding the pulp entering toward the outer peripheral surface by rotating about said rotation axis, enters the outer circumferential surface and a plate-shaped support portion you support against the rotation of the outer peripheral surface of the pulp, the grinding cylinder, the rotation axis perpendicular discoid to the rotary shaft arranged to provide a gap along the A supply roller having at least one disk portion that enters the gap and abuts against one main surface of the pulp, and the supply roller sandwiching the pulp. Opposite Provided Te comprises abutting roller facing portion on the other main surface of the pulp, by rotating the feed roller, and a roller rotating mechanism for feeding the pulp to the supply direction.

  The invention according to claim 2 is the pulp crusher according to claim 1, wherein the roller facing portion is a roller.

  A third aspect of the present invention is the pulp pulverizing apparatus according to the first or second aspect, wherein the disk portion of the supply roller is disposed in each of all the gaps of the plurality of pulverizing blades.

  The invention according to claim 4 is the pulp crusher according to any one of claims 1 to 3, wherein each of the plurality of crushing blades includes a plurality of teeth at a constant pitch on an outer periphery, and the crushing On the outer peripheral surface of the cylinder, a plurality of teeth of the plurality of grinding blades are arranged in a spiral shape.

The invention described in claim 5 is the pulp disintegrator device according to any one of claims 1 to 4, wherein the grinding cylinder, you around said rotary shaft smaller in diameter than said plurality of grinding blades a disc-shaped further comprising a plurality of auxiliary grinding blades provided in a gap between the plurality of grinding blades.

  The invention according to claim 6 is the pulp crusher according to claim 5, wherein a plurality of protrusions projecting toward the plurality of auxiliary crushing blades in a gap between the plurality of crushing blades. Protrusions are provided.

  In the present invention, the supply rate of the pulp in the vicinity of the end of the pulp can be maintained constant, and the amount of pulverized pulp produced per unit time and the uniformity of quality can be improved. In the invention of claim 2, the pulp can be supplied more smoothly. In invention of Claim 3, a pulp can be supplied more stably.

  In the invention of claim 4, it is possible to efficiently pulverize the vicinity of the portion of the pulp that contacts each pulverizing blade. In the invention of claim 5, the portion of the pulp facing the gap between the plurality of pulverizing blades can be more reliably pulverized. In the invention of claim 6, the portion of the pulp facing the gap between the plurality of pulverizing blades can be pulverized more reliably.

  FIG. 1 is a diagram showing a configuration of an absorbent body manufacturing apparatus 1 according to the first embodiment of the present invention. The absorbent body manufacturing apparatus 1 is an apparatus for manufacturing an absorbent body 90 used for a paper diaper, a sanitary napkin, and the like, and the absorbent body 90 is obtained by pulverizing a thin pulp 9 cut to a certain size. Manufactured using ground pulp. For convenience of illustration, FIG. 1 shows a part of the pulp crushing mechanism 3 or the like so that the internal structure can be seen (the same applies to FIG. 2).

  The absorbent body manufacturing apparatus 1 is supplied by a pulp supply mechanism 2 that supplies pulp 9 along a predetermined supply path in the (−X) direction in FIG. 1, and on the downstream side of the pulp supply mechanism 2. A pulp crushing mechanism 3 for crushing the pulp 9, an absorbent body forming mechanism 4 for forming the absorbent body 90 by molding the pulverized pulp generated by the pulp crushing mechanism 3, and a control unit 5 for controlling these mechanisms are provided. In the absorber manufacturing apparatus 1, the pulp supply mechanism 2 and the pulp crushing mechanism 3 serve as a pulp crushing apparatus that crushes the pulp 9 for the absorber.

  The pulp supply mechanism 2 includes a pulp placement unit 21 on which a plurality of stacked pulps 9 are placed, a pulp take-out mechanism 22 that takes out the pulp 9 one by one from the pulp placement unit 21, and a pulp 9 from the pulp take-out mechanism 22. A conveyor 23 that receives and conveys it in the (−X) direction, and a supply path 24 that is disposed on the (−X) side of the conveyor 23 and guides the pulp 9 to the pulp crushing mechanism 3.

  FIG. 2 is an enlarged front view showing the vicinity of the supply path 24 and the pulp crushing mechanism 3. As shown in FIG. 2, the supply path 24 includes a substantially plate-like upper plate 241 and lower plate 242 that are in contact with the main surfaces of the pulp 9 on the (+ Z) side and the (−Z) side. The pulp supply mechanism 2 further includes an upper roller 243 disposed inside the crushing chamber 30 of the pulp crushing mechanism 3 and a lower roller 244 that is a roller facing portion provided to face the upper roller 243 across the pulp 9. The upper roller 243 and the lower roller 244 abut on the (+ Z) side and (−Z) side main surfaces of the pulp 9 through openings provided in the upper plate 241 and the lower plate 242.

  The pulp crushing mechanism 3 includes a crushing cylinder 31 that crushes the pulp 9, and the crushing cylinder 31 is parallel to the pulp 9 and substantially perpendicular to the feeding direction of the pulp feeding mechanism 2 (that is, in the Y direction in FIG. 2). It is substantially cylindrical with the cylinder rotation shaft 311 as the center. As the crushing cylinder 31 rotates about the cylinder rotation shaft 311, the pulp 9 entering toward the outer peripheral surface is crushed.

  3 is a plan view showing the vicinity of the crushing cylinder 31, and FIG. 4 is a side view of the vicinity of the crushing cylinder 31 as viewed from the (−X) side in the (+ X) direction. As shown in FIGS. 3 and 4, the crushing cylinder 31 includes a plurality of crushing blades 32 arranged with a constant gap 322 along the cylinder rotation shaft 311, and a plurality of auxiliary crushing provided in the gap 322. A blade 33 is provided. The pulverizing blade 32 and the auxiliary pulverizing blade 33 have a substantially disk shape with the cylinder rotating shaft 311 as the center, and are arranged along the cylinder rotating shaft 311 in a posture perpendicular to the cylinder rotating shaft 311. The diameter of the auxiliary grinding blade 33 is made smaller than the diameter of the grinding blade 32.

  As shown in FIG. 2, each of the plurality of crushing blades 32 includes a plurality (24 in the present embodiment) of teeth 321 at a constant pitch on the outer periphery. As shown in FIG. 3, each crushing blade 32 has a tooth 321 that is 3 ° apart from the crushing blade 32 adjacent to the (−Y) side in the rotation direction of the crushing cylinder 31 (ie, counterclockwise in FIG. 2). Since they are arranged so as to deviate from each other, the plurality of teeth 321 of the plurality of crushing blades 32 are arranged spirally on the outer peripheral surface of the crushing cylinder 31. The same applies to the plurality of auxiliary grinding blades 33 and the plurality of teeth 331 of the auxiliary grinding blade 33.

  As shown in FIGS. 3 and 4, the upper roller 243 includes an upper roller rotation shaft 2431 parallel to the cylinder rotation shaft 311 and a plurality of disk-shaped disks 2432 attached to the upper roller rotation shaft 2431. The disk 2432 is inserted into each of all the gaps 322 of the plurality of pulverizing blades 32 and is disposed in proximity to the auxiliary pulverizing blade 33, and the opening (the shape of the opening will be described later) of the upper plate 241 shown in FIG. .) Is brought into contact with the pulp 9.

  As shown in FIG. 4, the lower roller 244 includes a lower roller rotation shaft 2441 parallel to the cylinder rotation shaft 311 and a plurality of disks 2442 attached to the lower roller rotation shaft 2441, similarly to the upper roller 243. The plurality of disks 2442 are arranged in the gap 322 so as to face the plurality of disks 2432 of the upper roller 243 across the upper plate 241, the pulp 9 and the lower plate 242 (see FIG. 2). The lower roller 244 is pressed toward the upper roller 243 by a pressing mechanism.

  FIG. 5 is an enlarged plan view showing part of the crushing cylinder 31 and the vicinity of the (−X) side tip of the upper plate 241. In FIG. 5, for convenience of illustration, the disk 2432 of the upper roller 243 is drawn with a two-dot chain line, and the upper roller rotating shaft 2431 is not shown. As shown in FIG. 5, the tip of the upper plate 241 includes a plurality of protrusions 2411 that protrude toward the plurality of auxiliary pulverization blades 33 in the gaps 322 of the plurality of pulverization blades 32, and (−X ) Side edge is close to the outer periphery of the auxiliary grinding blade 33. An edge of a portion (hereinafter referred to as “concave portion”) 2412 between the plurality of protruding portions 2411 of the upper plate 241 is close to the outer periphery of the crushing blade 32 (that is, the outer peripheral surface of the crushing cylinder 31). In addition, a plurality of openings 2413 are formed at the tip of the upper plate 241 as described above, and the disk 2432 of the upper roller 243 contacts the main surface on the (+ Z) side of the pulp 9 through each opening 2413. . The tip of the lower plate 242 shown in FIG. 2 has the same shape as that of the upper plate 241, and the disk 2442 (see FIG. 4) is located on the (−Z) side of the pulp 9 through the opening provided in the lower plate 242. Contact the main surface.

  As shown in FIG. 4, a motor 2433 is connected to the upper roller rotating shaft 2431 of the upper roller 243 via a plurality of timing belts 2434, and the upper roller rotating shaft 2431 is rotated to the lower roller via gears 2435 and 2443. It is connected to the shaft 2441. In the pulp supply mechanism 2, the upper roller 243 and the lower roller 244 rotate synchronously by these mechanisms. That is, the motor 2433, the timing belt 2434, and the gears 2435 and 2443 serve as a roller rotation mechanism that rotates the upper roller 243 and the lower roller 244. A motor 312 is connected to the cylinder rotation shaft 311 via a plurality of timing belts 313.

  In the pulp supply mechanism 2, the motor 2433 is driven by the controller 5 (see FIG. 1), the plurality of disks 2432 rotate clockwise in FIG. 2 together with the upper roller rotating shaft 2431, and the plurality of disks 2442 rotate in the lower roller. By rotating counterclockwise together with the shaft 2441, the pulp 9 sandwiched between the disk 2432 and the disk 2442 is fed in the supply direction (that is, (−X) direction) while being guided by the upper plate 241 and the lower plate 242. And is smoothly supplied to the pulp crushing mechanism 3.

  In the pulp crushing mechanism 3, when the motor 312 shown in FIG. 4 is driven by the control unit 5, the plurality of crushing blades 32 and the plurality of auxiliary crushing blades 33 rotate counterclockwise in FIG. 2 together with the cylinder rotation shaft 311. Then, the pulp 9 supplied by the pulp supply mechanism 2 is pulverized. At this time, due to the teeth 321 of the plurality of pulverizing blades 32, not only the part of the pulp 9 that enters the pulverizing blade 32 but also the peripheral part thereof (that is, the part facing the gap 322 of the pulverizing blade 32 shown in FIG. 3). The pulp 9 is pulverized so as to be drawn, and the entire pulp 9 is pulverized on the outer peripheral surface of the pulverizing cylinder 31 in principle in the width direction. Even if a part of the pulp 9 facing the gap 322 remains without being pulverized by the pulverization blade 32, the remaining part is the protrusion 2411 and the protrusion 2411 of the upper plate 241 shown in FIG. Is guided by the protruding portion of the lower plate 242 (refer to FIG. 2) facing and enters the auxiliary crushing blade 33, and is crushed by the teeth 331 of the auxiliary crushing blade 33.

  At this time, the front end portion of the upper plate 241 (that is, the concave portion 2412 and the protruding portion 2411) serves as a support portion that supports the pulp 9 entering the grinding cylinder 31 against the rotation of the grinding blade 32 and the auxiliary grinding blade 33. As a result, the pulp 9 is reliably crushed by the pulp crushing mechanism 3. Further, the tip of the lower plate 242 serves as a holding part that holds the pulp 9 from the (−Z) side while facing the tip of the upper plate 241.

  In the absorbent body manufacturing apparatus 1 shown in FIG. 1, the pulverized pulp generated by the above-described pulp pulverization mechanism 3 is absorbed through the duct 41 by the air blown from the air outlet 301 (see FIG. 2) of the pulverization chamber 30. 4 is mixed with a water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) supplied from the polymer supply unit 421 and sprayed onto the cylindrical adsorption drum 42. The suction drum 42 rotates clockwise in FIG. 1 and is pulverized pulp and water-absorbing polymer on the outer peripheral surface of the suction drum 42 provided with fine suction holes by a suction mechanism (not shown) connected to the inside. Is adsorbed to a predetermined height. The mixing of the water-absorbing polymer may be omitted depending on the absorption power required for the absorber 90.

  The pulverized pulp and the water-absorbing polymer adsorbed on the outer peripheral surface of the adsorbing drum 42 move to the (−Z) side of the adsorbing drum 42 as the adsorbing drum 42 rotates, and are fed out from the roll 43 and conveyed by the conveyor 401. It is transferred to the tissue paper 92 conveyed in the (−X) direction. An adhesive (for example, hot melt) is applied in advance to the upper surface of the tissue paper 92 by an adhesive supply unit 431, and the pulverized pulp and the water-absorbing polymer are adhered onto the tissue paper 92 to form a pulp layer 900. .

  While the pulp layer 900 is conveyed in the (−X) direction by the conveyor 401, an adhesive is applied to the surface on one side of the tissue paper 93 fed out from another roll 44 by the adhesive supply unit 441, and the tissue paper 93 Is adhered to the pulp layer 900 and the tissue paper 92 with the adhesive application surface facing the pulp layer 900. The pulp layer 900 wrapped in the tissue papers 92 and 93 from the (−Z) side and the (+ Z) side becomes a piece having a predetermined length in the cutting part 471 (because it becomes a core part of the absorber 90, hereinafter “ The absorbent core 901 is cut into 901, and the plurality of absorbent cores 901 are conveyed in the (−X) direction at a predetermined interval by the conveyor 402.

  Then, the top sheet 94 and the back sheet 95, which are fed out from the rolls 45 and 46 and coated with the adhesive from the adhesive supply parts 451 and 461 on one side, are placed on the tissue paper 93 and 92 sandwiching the absorbent core 901. Further, the top sheet 94 and the back sheet 95 are cut at the gap between the adjacent absorbent cores 901 by the cutting portion 472 to form the absorbent body 90. The manufactured absorber 90 is carried out from the absorber manufacturing apparatus 1 by the conveyor 403.

  As described above, in the pulp supply mechanism 2, the pulp 9 is crushed by the disk 2432 of the upper roller 243 and the disk 2442 of the lower roller 244 that enter the gap 322 of the plurality of pulverization blades 32 and abut against the main surface of the pulp 9. It is supplied to the cylinder 31. Therefore, in the pulp supply mechanism 2 and the pulp crushing mechanism 3, the positions where the upper roller 243 and the lower roller 244 restrain the pulp 9 can be arranged in the very vicinity of the crushing cylinder 31, and the end of the pulp 9 (that is, (+ X The pulp 9 can be restrained by the upper roller 243 and the lower roller 244 even during pulverization in the vicinity of the) side end). As a result, even in the vicinity of the end of the pulp 9, resistance to the force applied to the pulp 9 by the rotation of the pulverizing cylinder 31 (that is, the force that pulls the pulp 9 in the (−X) direction) is imparted to the pulp 9. Can be prevented from being drawn into the pulverizing cylinder 31, and the supply rate of the pulp 9 can be maintained constant, and the amount of pulverized pulp produced per unit time and the uniformity of the quality can be improved. For this reason, in the absorber manufacturing apparatus 1, the uniformity of the quality of the absorber 90 can be improved. Moreover, the yield of pulverized pulp can be improved by pulverizing the pulp 9 supplied to the pulp pulverizing mechanism 3 over the entire length while avoiding removal from the apparatus without pulverizing the vicinity of the end of the pulp as in the prior art. Realized.

  In the pulp supply mechanism 2, since the pulp 9 is supplied by the upper roller 243 and the lower roller 244, the pulp 9 can be supplied more smoothly than in the case of being supplied by any one of the rollers. Further, since the disk 2432 of the upper roller 243 and the disk 2442 of the lower roller 244 are disposed in all the gaps 322 of the plurality of pulverizing blades 32, the pulp 9 can be supplied more stably.

  In the pulp crushing mechanism 3, the pulp 9 is sequentially crushed from the (+ Y) side to the (−Y) side by a plurality of teeth 321 arranged in a spiral shape on the outer peripheral surface of the crushing cylinder 31, whereby a large number of teeth are obtained. The portion of the pulp 9 that is prevented from simultaneously contacting the pulp 9 and facing the gaps 322 of the plurality of grinding blades 32 of the pulp 9 (hereinafter referred to as “gap facing portion”) is mainly the (+ Y) side grinding blade 32. Can be efficiently pulverized. As a result, it is possible to efficiently pulverize the periphery of the portion of the pulp 9 that contacts the pulverizing blades 32.

  In the pulp crushing mechanism 3, the auxiliary crushing blade 33 is provided in the gaps 322 of the plurality of crushing blades 32, so that when a part of the gap 9 facing the gap of the pulp 9 remains without being crushed by the crushing blade 32, Since the portion can be pulverized by the auxiliary pulverization blade 33, the gap facing portion of the pulp 9 can be more reliably pulverized. In addition, in the pulp supply mechanism 2, by providing a plurality of projecting portions projecting toward the auxiliary pulverizing blade 33 at the tip portions of the upper plate 241 and the lower plate 242, the auxiliary pulverizing blade reliably ensures the remaining portion of the pulp 9 Therefore, the gap facing portion of the pulp 9 can be pulverized more reliably.

  FIG. 6 is an enlarged plan view showing a part of the vicinity of the tip portion on the (−X) side of the crushing cylinder 31 and the upper plate 241a of the absorber manufacturing apparatus according to the second embodiment of the present invention. The absorbent body manufacturing apparatus according to the second embodiment includes an auxiliary pulverizing blade 33 illustrated in FIG. 5 from the absorbent body manufacturing apparatus 1 illustrated in FIG. 1, a protruding portion 2411 of the upper plate 241, and a lower portion facing the protruding portion 2411. Except for the point that the protruding portion of the plate 242 (see FIG. 2) is omitted, the other configurations are the same as those in FIG. 1, and the same reference numerals are given in the following description. Moreover, since the manufacturing process of the absorber 90 by the absorber manufacturing apparatus which concerns on 2nd Embodiment is the same as that of 1st Embodiment, description is abbreviate | omitted. In FIG. 6, as in FIG. 5, the disk 2432 of the upper roller 243 is drawn with a two-dot chain line, and the upper roller rotating shaft 2431 is not shown.

  As shown in FIG. 6, the tip of the upper plate 241 a includes a plurality of projecting portions 2411 a that project toward the plurality of pulverizing blades 32, and the (−X) side edge of the projecting portion 2411 a Close to the perimeter. The disks 2432 of the upper roller 243 are arranged so as to enter into the gaps 322 of each of the plurality of crushing blades 32, and between the plurality of protrusions 2411a of the upper plate 241a, Contact the surface. The tip of the lower plate (not shown) has the same shape as that of the upper plate 241a, and the disk 2442 of the lower roller 244 arranged so as to enter all the gaps 322 of the plurality of grinding blades 32 protrudes from the lower plate. Abutting against the main surface on the (−Z) side of the pulp 9 while facing the disk 2432 between the portions. Further, the width of each gap 322 of the grinding blade 32 of the grinding cylinder 31 is made narrower than that in the first embodiment.

  As described above, the pulp 9 is supplied while being sandwiched between the upper roller 243 and the lower roller 244 as in the first embodiment. Further, since the disks of these rollers enter all the gaps 322 of the grinding blade 32, Stable supply is also realized.

  In the pulp crushing mechanism 3, as in the first embodiment, the pulp 9 is sequentially crushed by the plurality of teeth 321 arranged in a spiral shape on the outer peripheral surface of the crushing cylinder 31. It is drawn into the grinding blade 32 and efficiently crushed. As a result, it is possible to efficiently pulverize the periphery of the portion of the pulp 9 that contacts the pulverizing blades 32 and pulverize the entire width of the pulp 9. At this time, the protruding portion 2411a of the upper plate 241a serves as a support portion for reliably pulverizing the pulp 9 by supporting the pulp 9 entering the pulverizing cylinder 31 against the rotation of the pulverizing blade 32.

  Also in the pulp supply mechanism 2 and the pulp crushing mechanism 3 of the absorbent body manufacturing apparatus according to the second embodiment, the upper roller 243 and the lower roller 244 that supply the pulp 9 while being sandwiched are arranged in the very vicinity of the crushing cylinder 31. This prevents the pulp 9 from being drawn into the pulverizing cylinder 31 even during pulverization near the end of the pulp 9. For this reason, the supply speed of the pulp 9 can be kept constant even in the vicinity of the end of the pulp 9, and the amount of pulverized pulp produced per unit time and the uniformity of quality can be improved. As a result, in the absorbent body manufacturing apparatus according to the second embodiment, the quality uniformity of the absorbent body 90 can be improved. Moreover, the improvement of the yield of a pulverized pulp is implement | achieved by grind | pulverizing the pulp 9 supplied with respect to the pulp grinding | pulverization mechanism 3 over a full length. In this way, if it is guaranteed that the pulp 9 entering between the grinding blades 32 is crushed, the pulp 9 is removed from the auxiliary grinding blade 33 and the gap 322 between the grinding blades 32 from the apparatus of the first embodiment. The structure to support may be abbreviate | omitted.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible. For example, the lower roller 244 does not necessarily need to be connected to the upper roller 243 and may be passively rotated as the pulp 9 moves.

  In the pulp supply mechanism 2, the disk 2432 and the disk 2442 do not need to be provided in all the gaps 322 of the plurality of pulverizing blades 32, and may be provided in at least one gap 322. Further, the diameter of either one of the two disks may be reduced so that the disk faces the other disk without entering the gap 322. Furthermore, in the pulp supply mechanism 2, either the upper roller 243 or the lower roller 244 may be omitted. For example, when the lower roller 244 is omitted, the lower plate 242 serves as a roller facing portion that faces the upper roller 243.

  In the crushing cylinder 31, each crushing blade 32 may be arranged such that the position of the tooth 321 is shifted from the position of the tooth 321 of the adjacent crushing blade 32 by half the pitch of the tooth 321. Further, when a plurality of (for example, two or three) crushing blades 32 are arranged without a gap in the crushing cylinder 31, the plurality of crushing blades 32 are handled as one blade in the above embodiment. You may be broken.

  The pulp pulverized by the pulp pulverization mechanism 3 may be in the form of a sheet. For example, roll-shaped pulp wound around a drum may be fed out and supplied to the pulp pulverization mechanism 3.

It is a figure which shows the structure of the absorber manufacturing apparatus which concerns on 1st Embodiment. It is a front view which expands and shows the supply path and the pulp crushing mechanism vicinity. It is a top view which shows the crushing cylinder vicinity. It is a side view which shows the crushing cylinder vicinity. It is a top view which expands and shows a part of tip part vicinity of a crushing cylinder and an upper plate. It is a top view which expands and shows a part of front-end | tip part vicinity of the grinding | pulverization cylinder and upper plate of the absorber manufacturing apparatus which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorber manufacturing apparatus 2 Pulp supply mechanism 3 Pulp grinding mechanism 9 Pulp 31 Grinding cylinder 32 Grinding blade 33 Auxiliary grinding blade 90 Absorber 241, 241 a Upper plate 243 Upper roller 244 Lower roller 311 Cylinder rotation shaft 321 Teeth 322 Gap 2411 Projection 2432, 2442 Disc 2433 Motor 2434 Timing belt

Claims (6)

A pulp crusher for crushing pulp for an absorber,
A pulp supply mechanism for supplying sheet-like pulp in a predetermined supply direction;
The pulp is circular cylindrical you around the vertical axis of rotation in the feeding direction which is parallel, crushed to crush the pulp entering toward the outer peripheral surface by rotating about said rotation axis A cylinder,
A plate-shaped support portion you support against the pulp enters the outer circumferential surface to the rotation of the outer peripheral surface,
With
The crushing cylinder includes a plurality of disc-shaped crushing blades perpendicular to the rotation axis arranged with a gap along the rotation axis,
The pulp supply mechanism is
A supply roller having at least one disc portion that enters the gap and abuts against one main surface of the pulp;
A roller facing portion provided opposite to the supply roller with the pulp sandwiched therebetween, and abutting against the other main surface of the pulp;
A roller rotation mechanism for feeding the pulp in the supply direction by rotating the supply roller;
A pulp crusher characterized by comprising: The pulp crusher according to claim 1,
The pulp crushing apparatus, wherein the roller facing portion is a roller. The pulp crusher according to claim 1 or 2,
The pulp crusher characterized in that a disc portion of the supply roller is arranged in each of all the gaps of the plurality of crushing blades. The pulp crusher according to any one of claims 1 to 3,
Each of the plurality of grinding blades includes a plurality of teeth at a constant pitch on the outer periphery,
A pulp crusher characterized in that a plurality of teeth of the plurality of crushing blades are spirally arranged on the outer peripheral surface of the crushing cylinder. The pulp crusher according to any one of claims 1 to 4,
The crushing cylinder, further comprising a plurality of auxiliary grinding blades provided in a gap between the plurality of grinding blades a plurality of grinding disc shape even around said rotary shaft smaller in diameter than the blade Characterized pulp crusher. The pulp crusher according to claim 5,
The pulp crushing apparatus, wherein a tip of the support part includes a plurality of projecting portions projecting toward the plurality of auxiliary grinding blades in a gap between the plurality of grinding blades.

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