Electrical box

Abstract

To provide an electrical box which can increase the operability.SOLUTION: An electrical box 39A is used for a sheet manufacturing device, and includes: a housing 202; a power source set in the housing 202; and a wire 210 for supplying a voltage to a driving unit of the sheet manufacturing device from the power source. The wire 210 includes a high-voltage wire for supplying a high voltage and a low-voltage wire for supplying a low voltage. A recessed part 200 is formed in a ceiling surface 202a of the housing 202 and a drawing port for drawing the wire 210 is formed in the recessed part 200.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an electrical box used in a sheet manufacturing apparatus.

Background Art

[0002] Patent Document 1 discloses a configuration of an electrical box including a box body and a lid that detachably covers an opening of the box body. A relay connector is attached to the surface of the lid so that wiring can be connected without removing the box body. Therefore, the wiring work can be made easier.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the configuration described in Patent Document 1, when the electrical box is enlarged, there is a problem that the wiring connection work becomes difficult and the workability decreases. Further, when high-voltage wiring and low-voltage wiring are used, if they are close to each other, there are problems such as noise propagation between the wirings and short circuits.

Means for Solving the Problems

[0005] The electrical box is an electrical box used in a sheet manufacturing apparatus, and includes a housing, a power source installed in the housing, and wiring for supplying voltage from the power source to a drive unit of the sheet manufacturing apparatus. The wiring includes high-voltage wiring for supplying high voltage and low-voltage wiring for supplying low voltage. A recess is formed on the top surface of the housing, and a lead-out port for leading out the wiring is provided in the recess.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0007] In the following embodiments, a sheet manufacturing apparatus 1 for recycling paper pieces such as waste paper in a dry manner will be exemplified and described with reference to the drawings. The sheet manufacturing apparatus 1 of the present invention is not limited to being dry, and may be wet. In this specification, "dry" means that it is carried out in air such as the atmosphere without being carried out in a liquid.

[0008] In the following figures, three axes orthogonal to each other will be described as the X-axis, Y-axis, and Z-axis. Also, the direction along the X-axis is the "X direction", the direction along the Y-axis is the "Y direction", the direction along the Z-axis is the "Z direction", the direction of the arrow is the + direction, and the direction opposite to the + direction is the - direction. The Z-axis is a virtual axis along the vertical direction, with the +Z direction being upward and the -Z direction being downward. The -Z direction is the direction in which gravity acts. Also, in the sheet manufacturing apparatus 1, the front in the conveyance direction of raw materials, webs, sheets, etc. may be referred to as downstream, and the side in the reverse conveyance direction may be referred to as upstream. For the convenience of illustration, the sizes of the respective members are made different from the actual ones.

[0009] The configuration of the sheet manufacturing apparatus 1 will be described with reference to FIG. 1.

[0010] As shown in FIG. 1, the sheet manufacturing apparatus 1 includes a first unit group 101, a second unit group 102, and a third unit group 103. The sheet manufacturing apparatus 1 has a drive unit that integrally drives each unit group 101, 102, and 103. The directions in which the raw material C, the sheet P3, the slit pieces S, and the end materials move are indicated by white arrows.

[0011] The sheet manufacturing apparatus 1 manufactures the sheet P3 from the raw material C. As shown in FIG. 1, in a side view from the -X direction, the first unit group 101, the third unit group 103, and the second unit group 102 are arranged from the -Y direction toward the +Y direction.

[0012] The raw material C is conveyed from the first unit group 101 to the second unit group 102 through a pipe 21 that crosses inside the third unit group 103. After the raw material C is defibrated or the like in the second unit group 102, it is conveyed to the third unit group 103 through a pipe 24. The raw material C is made into a web W in the third unit group 103 and then formed into a strip-shaped sheet P1. The strip-shaped sheet P1 is cut by the first unit group 101 to form the sheet P3.

[0013] The first unit group 101 includes a buffer tank 13, a metering supply unit 15, a confluence unit 17, and a pipe 21. In the first unit group 101, these components are arranged in the above order from upstream to downstream. The first unit group 101 also includes a first cutting unit 81, a second cutting unit 82, a tray 91, and a shredding unit 95. The first cutting unit 81 and the second cutting unit 82 cut the strip-shaped sheet P1 into a sheet P3 having a predetermined shape.

[0014] The raw material C is introduced from a raw material inlet 11 into the buffer tank 13. The raw material C contains fibers such as cellulose and is, for example, shredded waste paper pieces. Inside the buffer tank 13, air humidified by a second humidifying unit 66 provided in the third unit group 103 is supplied.

[0015] After being temporarily stored in the buffer tank 13, the raw material C is conveyed to the metering and feeding unit 15 according to the operation of the sheet manufacturing apparatus 1. The sheet manufacturing apparatus 1 may be provided with a shredder for shredding waste paper or the like on the upstream side of the buffer tank 13.

[0016] The metering and feeding unit 15 has a weighing instrument 15a and a feeding mechanism (not shown). The weighing instrument 15a weighs the mass of the raw material C. The feeding mechanism feeds the raw material C weighed by the weighing instrument 15a to the downstream confluence section 17. That is, the metering and feeding unit 15 weighs the raw material C by the weighing instrument 15a for each predetermined mass and feeds it to the downstream confluence section 17 by the feeding mechanism.

[0017] As the weighing instrument 15a, either a digital or an analog weighing mechanism can be applied. Specifically, examples of the weighing instrument 15a include physical sensors such as load cells, spring scales, and balances. In the present embodiment, a load cell is used as the weighing instrument 15a. The predetermined mass at which the weighing instrument 15a weighs the raw material C is, for example, about several grams to several tens of grams.

[0018] As the feeding mechanism, known techniques such as a vibratory feeder can be applied. The feeding mechanism may be a configuration included in the weighing instrument 15a.

[0019] The weighing and feeding of the raw material C in the metering and feeding unit 15 is batch processing. That is, the supply of the raw material C from the metering and feeding unit 15 to the confluence section 17 is carried out intermittently. The metering and feeding unit 15 may have a plurality of weighing instruments 15a, and the plurality of weighing instruments 15a may be operated with a time difference to improve the efficiency of weighing.

[0020] In the confluence section 17, the shredded pieces of the slit pieces S supplied from the slitting section 95 are confluent and mixed with the raw material C supplied from the metering and feeding unit 15. The slit pieces S and the slitting section 95 will be described later. The raw material C in which the above-mentioned shredded pieces are mixed flows from the confluence section 17 into the pipe 21.

[0021] The pipe 21 conveys the raw material C from the first unit group 101 to the second unit group 102 by the air flow generated by a blower (not shown).

[0022] Further, the second unit group 102 includes a defibrating unit 31, a separating unit 32, a pipe 23, a mixing unit 33, and a pipe 24. In the second unit group 102, these components are arranged in the above order from upstream to downstream. The second unit group 102 also includes a pipe 25 connected to the separating unit 32, a recovery unit 35, a compressor 38, and a power supply unit 39.

[0023] The raw material C conveyed through the pipe 21 flows into the defibrating unit 31. The defibrating unit 31 dry-defibrates the raw material C supplied from the metering supply unit 15 into fibers. As the defibrating unit 31, a known defibrating mechanism can be applied.

[0024] Examples of the defibrating unit 31 include the following configuration. The defibrating unit 31 includes a stator and a rotor. The stator has a substantially cylindrical inner surface. The rotor is installed inside the stator and rotates along the inner surface of the stator. The pieces of the raw material C are sandwiched between the inner surface of the stator and the rotor and are defibrated by the shearing force generated therebetween. As a result, the entangled fibers contained in the paper pieces of the raw material C are unraveled, and the raw material C becomes fibrous. The fibrous raw material C is conveyed to the separating unit 32.

[0025] The separating unit 32 removes the components unnecessary for the production of the sheet P3 contained in the fibrous raw material C. Specifically, the separating unit 32 separates relatively long fibers and relatively short fibers. Since the relatively short fibers may cause a decrease in the strength of the sheet P3, they are separated by the separating unit 32. The separating unit 32 also separates and removes colorants, additives, etc. contained in waste paper. As the separating unit 32, a known technique such as a disk mesh method can be applied.

[0026] Inside the separation unit 32, air humidified by the second humidifying unit 66 of the third unit group 103 is supplied. The raw material C has relatively short fibers and the like removed, and is conveyed to the mixing unit 33 via the pipe 23. Unnecessary components such as relatively short fibers and coloring materials are discharged to the recovery unit 35 via the pipe 25.

[0027] The mixing unit 33 mixes a binder and the like with the raw material C in the air to form a mixture. Although not shown in the figure, the mixing unit 33 includes a flow path through which the raw material C is conveyed, a fan, a hopper, a supply pipe, and a valve.

[0028] The hopper communicates with the flow path of the raw material C via the supply pipe. The valve is provided in the supply pipe between the hopper and the flow path. The hopper supplies a binder such as starch into the flow path. The valve adjusts the mass of the binder supplied from the hopper to the flow path. Thereby, the mixing ratio of the raw material C and the binder is adjusted. In addition to the above-described configuration for supplying the binder, the mixing unit 33 may be provided with a similar configuration for supplying a coloring material, an additive, or the like.

[0029] The fan of the mixing unit 33 uses the generated airflow to convey the raw material C downstream while mixing a binder and the like into the air to form a mixture. The mixture flows from the mixing unit 33 into the pipe 24. The recovery unit 35 includes a filter (not shown). The filter filters out unnecessary components of the raw material C conveyed in the pipe 25 by the airflow.

[0030] The compressor 38 generates compressed air. The above filter may become clogged by fine particles and the like among the unnecessary components. It is possible to blow the compressed air generated by the compressor 38 onto the filter to blow off the attached particles and clean the filter.

[0031] The power supply unit 39 includes, in addition to the control unit described above, a power supply device that supplies power to the sheet manufacturing apparatus 1. The power supply unit 39 distributes the power supplied from the outside to each component of the sheet manufacturing apparatus 1.

[0032] The third unit group 103 deposits and compresses a mixture containing fibers and forms it into a belt-shaped sheet P1. The third unit group 103 includes a deposition unit 50, a first conveying unit 61, a second conveying unit 62, a first humidifying unit 65, a second humidifying unit 66, and a forming unit 70. The third unit group 103 has the deposition unit 50, the first conveying unit 61, the second conveying unit 62, the first humidifying unit 65, and the forming unit 70 arranged in this order from upstream to downstream.

[0033] The deposition unit 50 deposits a mixture in the air to generate a web W. The deposition unit 50 includes a drum member 53, a blade member 55 installed inside the drum member 53, a housing 51 that houses the drum member 53, and a suction unit 59. The mixture is taken into the inside of the drum member 53 from a pipe 24.

[0034] Below the deposition unit 50, the first conveying unit 61 is arranged. The first conveying unit 61 includes a mesh belt 61a and five tensioning rollers (not shown) that tension the mesh belt 61a. The suction unit 59 faces the drum member 53 across the mesh belt 61a in the direction along the Z-axis.

[0035] The blade member 55 is inside the drum member 53 and is rotationally driven by a motor (not shown). The drum member 53 is a semi-cylindrical sieve. A net having a sieve function is provided on the side surface of the drum member 53 facing downward. The drum member 53 allows particles such as fibers and the mixture that are smaller than the opening size of the sieve mesh to pass from the inside to the outside.

[0036] The mixture is discharged to the outside of the drum member 53 while being stirred by the rotating blade member 55 inside the drum member 53. Humidified air from the second humidifying unit 66 is supplied to the inside of the drum member 53.

[0037] The suction unit 59 is arranged below the drum member 53. The suction unit 59 sucks the air inside the housing 51 through a plurality of holes in the mesh belt 61a. The plurality of holes in the mesh belt 61a allow air to pass through while making it difficult for fibers, binders, etc. contained in the mixture to pass through.

[0038] As a result, the mixture discharged to the outside of the drum member 53 is sucked downward together with air. The suction unit 59 is a known suction device such as a blower. The mixture is dispersed in the air inside the housing 51 and accumulates on the upper surface of the mesh belt 61a by gravity and the suction of the suction unit 59 to form the web W.

[0039] The mesh belt 61a is an endless belt and is stretched by five tension rollers. The mesh belt 61a rotates counterclockwise in FIG. 1 due to the rotation of the tension rollers. As a result, the mixture continuously accumulates on the mesh belt 61a to form the web W. The web W contains a relatively large amount of air and is soft and swollen. The first conveying unit 61 conveys the formed web W downstream by the rotation of the mesh belt 61a.

[0040] The second conveying unit 62 conveys the web W downstream of the first conveying unit 61 in place of the first conveying unit 61. The second conveying unit 62 peels the web W from the upper surface of the mesh belt 61a and conveys it toward the forming unit 70. The second conveying unit 62 is above the conveying path of the web W and is arranged slightly upstream of the starting point on the return side of the mesh belt 61a. A part of the +Y direction of the second conveying unit 62 and the -Y direction of the mesh belt 61a overlap in the vertical direction.

[0041] The second conveying unit 62 has a transport belt (not shown), a plurality of rollers, and a suction mechanism. The transport belt is provided with a plurality of holes for passing air. The transport belt is stretched by a plurality of rollers and rotates by the rotation of the rollers.

[0042] The second conveying unit 62 sucks the upper surface of the web W to the lower surface of the transport belt by the negative pressure generated by the suction mechanism. By rotating the transport belt in this state, the web W is adsorbed to the transport belt and conveyed downstream.

[0043] The first humidifying unit 65 is an ultrasonic humidifier that supplies mist M from below to the web W conveyed by the second conveying unit 62 to humidify it. The first humidifying unit 65 is disposed below the second conveying unit 62 and faces the web W conveyed by the second conveying unit 62 in the direction along the Z axis.

[0044] When the web W is humidified with the mist M, the function as a binder for starch is promoted, and the strength of the sheet P3 is improved. Also, since humidification is performed from below to the web W, the fall of droplets derived from the mist onto the web W is prevented. Further, since humidification is performed from the opposite side of the contact surface between the transport belt and the web W, the adhesion of the web W to the transport belt is reduced. The second conveying unit 62 conveys the web W to the forming unit 70.

[0045] The forming unit 70 heats and presses the web W to form it into a belt-shaped sheet P1. The forming unit 70 has a pair of heating rollers 71, 72. Each of the pair of heating rollers 71, 72 incorporates an electric heater and has a function of heating the roller surface.

[0046] By continuously passing the web W between the pair of heating rollers 71, 72, the web W is pressed while being heated. As a result, the air contained in the relatively soft web W containing a lot of air is reduced, and the fibers are bound to each other by the binder, and a belt-shaped sheet P1 is formed. The belt-shaped sheet P1 is conveyed to the first unit group 101 by a conveying roller (not shown).

[0047] The second humidifying unit 66 is disposed below the first humidifying unit 65. The second humidifying unit 66 is a vaporizing humidifier. The second humidifying unit 66 supplies humidified air to the inside of the buffer tank 13, the separation unit 32, and the drum member 53 via a plurality of pipes (not shown). The humidified air suppresses the charging of the fibers and particles of the raw material C in each of the above configurations and suppresses the adhesion due to these static charges.

[0048] The strip-shaped sheet P1 conveyed to the first unit group 101 reaches the first cutting part 81. The first cutting part 81 cuts the strip-shaped sheet P1 in a direction intersecting the conveying direction, for example, in the direction along the X axis. The strip-shaped sheet P1 is cut into single-sheet-shaped sheets P2 at the first cutting part 81. The single-sheet-shaped sheet P2 is conveyed from the first cutting part 81 to the second cutting part 82.

[0049] The second cutting part 82 cuts the single-sheet-shaped sheet P2 in the conveying direction, for example, in the direction along the Y axis. Specifically, the second cutting part 82 cuts the vicinity of both sides in the direction along the X axis of the single-sheet-shaped sheet P2. Thereby, the single-sheet-shaped sheet P2 becomes a sheet P3 having a predetermined shape such as A4 size or A3 size. The sheet P3 is conveyed obliquely upward and stacked on the tray 91. The sheet P3 can be applied as a substitute for, for example, copy paper.

[0050] When cutting the single-sheet-shaped sheet P2 into the sheet P3 at the second cutting part 82, a slit piece S which is a scrap is generated. The slit piece S is conveyed in the substantially -Y direction and reaches the shredding part 95 which is a shredder. The shredding part 95 shreds the slit piece S into shredded pieces and supplies them to the confluence part 17. A mechanism for measuring the shredded pieces of the slit piece S and supplying them to the confluence part 17 may be installed between the shredding part 95 and the confluence part 17.

[0051] Next, with reference to FIGS. 2 to 7, the configuration of the electrical equipment box 39A will be described.

[0052] As shown in FIG. 2, in the sheet manufacturing apparatus 1, the recovery part 35 and the power supply part 39 are arranged side by side. The power supply part 39 has an electrical equipment box 39A and a frame 201 that supports the electrical equipment box 39A.

[0053] As shown in FIG. 3, the power supply part 39 has an electrical equipment box 39A and a frame 201. The frame 201 has a frame 201a and leg parts 201b that support the electrical equipment box 39A.

[0054] The electrical component box 39A has a housing 202, a suction fan 310 disposed below the housing 202, and an exhaust port 320 disposed above the housing 202.

[0055] On the top surface 202a of the housing 202, a recess 200 is provided on the side (-Y direction) adjacent to the recovery unit 35 (see FIG. 2). In the recess 200, a lead-out port 230 (see FIG. 5) for leading out the wiring 210 is provided.

[0056] The recess 200 has, for example, a length of 250 mm in the X direction, a length of 120 mm in the Y direction, and a length of 100 mm in the Z direction. The housing 202 has, for example, a length of 800 mm in the X direction, a length of 1100 mm in the Z direction, and a length of 200 mm in the Y direction.

[0057] In this way, since the recess 200 for leading out the wiring 210 is provided on the top surface 202a of the housing 202, it is possible to form a gap for winding and retaining the wiring 210. When connecting the wiring, no matter in which direction the housing 202 is placed on the floor or the like, it is possible to prevent pinching the wiring 210 between the housing 202. In addition, even when the electrical component box 39A is large and heavy, the work can be carried out while lying it on the floor. Also, even after arranging the recovery unit 35 and the power supply unit 39 in contact with each other, the wiring 210 can be led out or extended. Therefore, the workability during wiring connection in the sheet manufacturing apparatus 1 can be improved.

[0058] As shown in FIG. 4, a power supply 220 is disposed inside the housing 202. The wiring 210 is connected to the power supply 220. The wiring 210 includes, for example, a high-voltage wiring 211 for supplying a high voltage of 200V and a low-voltage wiring 212 for supplying a low voltage of 48V or less.

[0059] The high-voltage wiring 211 and the low-voltage wiring 212 electrically connect the power supply 220 and the drive units of the respective parts constituting the sheet manufacturing apparatus 1. The high-voltage wiring 211 and the low-voltage wiring 212 supply voltage from the power supply 220 to the drive units of the respective parts constituting the sheet manufacturing apparatus 1.

[0060] As shown in FIG. 5, the electrical component box 39A is provided with a recess 200 at a side adjacent to the recovery part 35 on the top surface 202a of the housing 202, that is, at a corner where the -Y direction and the +X direction intersect on the top surface 202a.

[0061] The recess 200 has a first side wall 200a and a second side wall 200b formed by a surface intersecting the first side wall 200a. A first opening 231 is provided in the first side wall 200a. A second opening 232 is provided in the second side wall 200b.

[0062] The high-voltage wiring 211 is drawn out from the housing 202 to the outside through the first opening 231. The low-voltage wiring 212 is drawn out from the housing 202 to the outside through the second opening 232. The first opening 231 and the second opening 232 are preferably separated so that the high-voltage wiring 211 and the low-voltage wiring 212 do not come into contact with each other. For example, they are each formed in an elliptical shape.

[0063] The first opening 231 and the second opening 232 have, for example, a straight-line part length of 90 mm and a width in the Z direction of 30 mm.

[0064] Thus, since the first opening 231 through which the high-voltage wiring 211 is drawn out is provided in the first side wall 200a of the recess 200, and the second opening 232 through which the low-voltage wiring 212 is drawn out is provided in the second side wall 200b of the recess 200, it is possible to draw out the high-voltage wiring 211 and the low-voltage wiring 212 separately, and it is possible to suppress the propagation of noise and the occurrence of a short circuit between the high-voltage wiring 211 and the low-voltage wiring 212. In addition, the safety standards regarding wiring separation in the electrical component box 39A can be satisfied.

[0065] As shown in FIGS. 6 and 7, for example, when the lid 202b located in the +Y direction of the housing 202 is opened, the power supply 220 is arranged at the front. FIG. 6 shows the housing of the housing 202 located in the +Y direction, that is, the state seen when the lid 202b is opened.

[0066] At the upper right of the housing 202 shown in FIG. 6, that is, at the corner where the +X direction, -Y direction, and +Z direction in the housing 202 intersect, a recess 200 is provided.

[0067] The high-voltage wiring 211 and the low-voltage wiring 212 connected to the power supply 220 are drawn out to the outside of the housing 202 through the recess 200.

[0068] Below the electrical equipment box 39A, for example, a plurality of control units 240, drivers, etc. that control the voltage supplied to the drive units of each part of the sheet manufacturing apparatus 1 are arranged. A suction fan 310 is arranged on the lid 202b located in the +Y direction of the housing 202 (see FIG. 3). Therefore, the inside of the housing 202 of the electrical equipment box 39A is at a positive pressure.

[0069] Since the suction fan 310 is arranged below the housing 202 and the recess 200 having the first opening 231 and the second opening 232 is provided above the housing 202, the air inside the housing 202, specifically, the heat generated by the control unit 240 etc., can be exhausted from the recess 200, and it is possible to suppress the inside of the housing 202 from getting hot. In other words, it is possible to create an air flow from the lower side to the upper side of the housing 202, and the heat can be exhausted efficiently.

[0070] As described above, the electrical equipment box 39A of the present embodiment includes a housing 202, a power supply 220 installed in the housing 202, and wiring 210 that supplies voltage from the power supply 220 to the drive unit of the sheet manufacturing apparatus 1. The wiring 210 includes a high-voltage wiring 211 that supplies a high voltage and a low-voltage wiring 212 that supplies a low voltage. A recess 200 is formed in the top surface 202a of the housing 202, and a lead-out port 230 for leading out the wiring 210 is provided in the recess 200.

[0071] According to this configuration, since the recess 200 having the outlet 230 for drawing out the wiring 210 is provided on the top surface 202a of the housing 202, it is possible to form a gap for holding the wiring 210, and no matter in which direction the housing 202 is placed on the floor or the like, it is possible to prevent the wiring 210 from being sandwiched between the housing 202. Therefore, the workability during wiring connection can be improved. Further, since the outlet 230 is provided in the recess 200, it is possible to exhaust the heat generated inside the housing 202 from the outlet 230, and it is possible to suppress the inside of the housing 202 from getting hot.

[0072] Also, by providing the recess 200 on the top surface 202a of the electrical component box 39A, even when the electrical component box 39A is placed upright, it can be stably placed without affecting the balance. Specifically, for example, when the recess 200 is provided on the lower surface of the electrical component box 39A, when the electrical component box 39A is placed upright, the balance deteriorates and the stability decreases.

[0073] Also, in the electrical component box 39A of the present embodiment, the recess 200 preferably has a first side wall 200a and a second side wall 200b formed by a surface intersecting the first side wall 200a, and the outlet 230 preferably has a first opening 231 provided in the first side wall 200a and a second opening 232 provided in the second side wall 200b. According to this configuration, since the first opening 231 is provided in the first side wall 200a and the second opening 232 is provided in the second side wall 200b, it is possible to draw out the wiring 210 separately to the first opening 231 and the second opening 232, and it is possible to suppress the propagation of noise or the occurrence of a short between the wirings 211 and 212. Specifically, the safety standards regarding wiring separation in the electrical component box 39A can be satisfied.

[0074] Also, in the electrical component box 39A of the present embodiment, it is preferable that the high-voltage wiring 211 is drawn out of the housing 202 from the first opening 231, and the low-voltage wiring 212 is drawn out of the housing 202 from the second opening 232. According to this configuration, since the high-voltage wiring 211 is drawn out from the first opening 231 and the low-voltage wiring 212 is drawn out from the second opening 232, it becomes possible to separately draw out the wirings 211 and 212 having different voltages, and it is possible to suppress noise from propagating or a short circuit from occurring between the wirings 211 and 212. Specifically, the safety standards regarding wiring separation in the electrical component box 39A can be satisfied.

[0075] Hereinafter, a modification of the above-described embodiment will be described.

[0076] As described above, the present invention is not limited to providing the first opening 231 in the first side wall 200a and the second opening 232 in the second side wall 200b. For example, two or three or more openings may be provided in each of the side walls 200a and 200b.

Explanation of Reference Numerals

[0077] 1... Sheet manufacturing apparatus, 11... Raw material inlet, 13... Buffer tank, 15... Quantitative supply unit, 15a... Meter, 17... Confluence section, 21, 23, 24, 25... Pipes, 31... Fiberizing section, 32... Separation section, 33... Mixing section, 35... Recovery section, 38... Compressor, 39... Power supply unit, 39A... Electrical equipment box, 50... Deposition section, 51... Housing, 53... Drum member, 55... Blade member, 59... Suction section, 61... First conveying section, 61a... Mesh belt, 62... Second conveying section, 65... First humidifying section, 66... Second humidifying section, 70... Forming section, 71, 72... Pair of heating rollers, 81... First cutting section, 82... Second cutting section, 91... Tray, 95... Shredding section, 101... First unit group, 102... Second unit group, 103... Third unit group, 200... Recess, 200a... First side wall, 200b... Second side wall, 201... Frame, 201a... Frame, 201b... Legs, 202... Housing, 202a... Top surface, 202b... Lid, 210... Wiring, 211... High voltage wiring, 212... Low voltage wiring, 220... Power supply, 230... Outlet, 231... First opening, 232... Second opening, 240... Control unit, 310... Suction fan, 320... Exhaust port.

Claims

1. An electrical box for use in a seat manufacturing apparatus, A housing, a power source installed in the housing, and wiring that supplies a voltage from the power source to a drive unit of the sheet manufacturing apparatus, The wiring includes a high-voltage wiring for supplying a high voltage and a low-voltage wiring for supplying a low voltage, A recess is formed on the top surface of the housing, The recess is provided with an outlet for leading the wiring out, the electrical box.

2. 2. The electrical box according to claim 1, The recess has a first side wall and a second side wall formed of a surface intersecting the first side wall, The outlet port has a first opening provided in the first side wall and a second opening provided in the second side wall.

3. 3. The electrical box according to claim 2, The high voltage wiring is led out of the housing through the first opening, The low voltage wiring is led out from the second opening to the outside of the housing.

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