JP6498512B2 - Wire transport mechanism for cutting ALC semi-cured material - Google Patents

Description

  The present invention relates to a wire transport mechanism used when a semi-cured body produced in a manufacturing process of a lightweight cellular concrete panel is cut into a panel shape with a wire.

  Lightweight cellular concrete (hereinafter also referred to as ALC) panels are light in weight because they have a large number of bubbles formed by foaming at the manufacturing stage, and are excellent in fire resistance, heat insulation, and workability. It is widely used as a building material for building walls, roofs, floors, etc.

  As a manufacturing method of this ALC panel, first, a raw material slurry is prepared by adding auxiliary materials such as gypsum and aluminum powder together with water to fine powders mainly composed of siliceous materials such as silica and calcareous materials such as cement and quicklime. It is prepared and poured into a mold in which reinforcing bars are arranged in advance. Then, the temperature of the raw material slurry is adjusted to about 40 to 50 ° C. and foamed by the reaction of the aluminum powder, and a semi-cured ALC (hereinafter also referred to as a semi-cured material) is generated by the reaction of the calcareous raw material.

  Next, the block-shaped semi-cured material is taken out by removing the mold, and cut into a panel shape with a wire such as a piano wire. This is charged into an autoclave and subjected to high temperature and high pressure steam curing to produce tobermorite. Thereby, the finally cured ALC panel can be obtained. By the way, in the above-mentioned cutting of the semi-cured body, conventionally, a wire is stretched between two support portions provided apart in the vertical direction, and a semi-cured ALC block is pressed against this wire to form a panel. The method of slicing into a shape has been used. However, in this method, the cut surface of the semi-cured product may be rubbed off.

  Cut off of the cut surface not only remains on the surface of the ALC panel even after steam curing, but the appearance of the panel itself is not impaired, and wind or rubbing of the cut surface occurs when the panel is stored or moved. Or when the panel is vibrated or the like, it may be scattered as dust, which may be a problem in the work environment in a panel storage place or construction site. In addition, if a normal paint finish is applied to the surface of the ALC panel with the glazed state, the flared portion remains as an uneven portion on the surface of the ALC panel after coating, so a large amount of paint is applied to the aesthetic appearance of the ALC panel surface. There was a need to keep it intact.

  Therefore, in recent years, in order to suppress such fluffing and smooth the cut surface, a pair of bobbins can be used to run the wire in one direction by a roll-to-roll method or by reciprocating the wire. A method of cutting a semi-cured body has been proposed. For example, in Patent Documents 1 and 2, an unwinding bobbin and a winding bobbin are provided at positions opposed to each other across an area through which a semi-cured body passes at the time of cutting, and are conveyed by roll-to-roll using these one pair of bobbins. A method of slicing into a panel shape by pressing a semi-cured body against a wire is disclosed.

JP 56-33295 A JP 2004-358597 A

  As described above, when the semi-cured body is cut with the wire conveyed in a roll-to-roll manner by the pair of bobbins, almost all of the wires wound around the first bobbin of the pair of bobbins are unwound. Then, after being wound around the second bobbin, the rotation direction of the pair of bobbins is reversely rotated, and the wire is unwound from the second bobbin that has been wound and wound around the first bobbin. Is done. By repeating this operation and reciprocating the wire along a predetermined transport path, a plurality of semi-cured bodies can be cut into a panel shape efficiently and continuously.

  However, when a so-called turbulent winding occurs in the wound bobbin, the wire wound around the bobbin one after another runs on the wire wound in the turbulent winding state in an oblique direction, or kinks occur. There is a possibility that a trace of plastic deformation may remain on the wire itself at a place where the kink is generated by climbing in the oblique direction. When the semi-cured body is cut with the wire having the deformation traces left in this way, a streak of the wire deformation traces is attached to the cut surface, which may cause a quality problem. Therefore, it is desired that the bobbin to be wound is a so-called aligned winding without being irregularly wound.

  In order to wind the wire with the winding bobbin, the winding pulley is forcibly reciprocated in the axial direction, and the final pulley that guides the wire to the winding bobbin is secured from the winding bobbin to secure the fleet angle. A device has been devised to make it easy to align and wind naturally by arranging them at a sufficient distance. However, in order to secure the fleet angle that is naturally aligned, it is necessary to secure a distance of 20 times or more the winding bobbin width between the winding bobbin and the guide pulley that makes final contact. It was difficult to do so, and it was necessary to install a guide pulley for forcibly aligning the wires in the immediate vicinity of the winding bobbin.

  The present invention has been made in view of the above-described problems of the prior art, and reciprocates a wire in a roll-to-roll manner using a pair of bobbins with respect to a semi-cured body generated in the manufacturing process of an ALC panel. An object of the present invention is to provide a wire transport mechanism that can perform well-aligned winding on a bobbin where a wire is wound when it is cut into a panel shape by being pressed.

In order to achieve the above object, a wire conveyance mechanism of the present invention is coaxially attached to a rotational drive shaft that can rotate forward and reverse, and a pair of bobbins that convey a wire for cutting in a reciprocating manner by roll-to-roll. , A wire transport mechanism comprising at least one roller that demarcates the transport path of the wire and two guide rolls provided in parallel in the vicinity of the pair of bobbins, each guide roll comprising: away from the wire when the wire is unwound from a corresponding bobbin, reciprocated in the rotation axis direction such that regular winding while the guide in contact with the wire when the wire is wound on the corresponding bobbin, the two In each of the guide rolls, the winding portion around which the wire is wound is reduced in diameter so as to become thinner toward the central portion in the axial direction, and Over the entire periphery in the axial direction central portion, characterized in that the wire just fits crowded at one guide groove in the axial direction central portion size is positioned of a substantially U-shaped cross section is provided It is said.

  According to the present invention, when a semi-cured ALC block is cut while a wire is run roll-to-roll using a pair of bobbins, the wires can always be aligned and wound on the bobbin where the winding is performed. . As a result, even if the reversal of the rotation direction of the pair of bobbins is repeated, the kink marks and the traces of the wires overlapping obliquely do not occur, so the wire cut surface of the semi-cured ALC block can be flattened, Therefore, an ALC panel excellent in appearance quality can be manufactured.

It is a top view which shows one Embodiment of the wire conveyance mechanism of this invention. It is a top view of the guide roll which the wire conveyance mechanism of FIG. 1 has. It is a photograph which shows the state in which the wire conveyed using the specific example of the wire conveyance mechanism of this invention is arranged and wound by the winding bobbin.

  Hereinafter, an embodiment of a wire transport mechanism according to the present invention will be described with reference to FIG. The wire conveyance mechanism shown in FIG. 1 is coaxially attached to a rotational drive shaft 1 that can rotate forward and backward, and a pair of bobbins that convey a wire W such as a piano wire for cutting in a reciprocating manner in a roll-to-roll manner. 2, 3, at least one roller (not shown) that defines a conveyance path of the wire W, and two guide rolls 4, 5 provided in parallel to the pair of bobbins 2, 3, respectively. have. Each of the guide rolls 4 and 5 is separated from the wire when the wire is unwound from the corresponding bobbin, and when the wire is wound around the corresponding bobbin, the guide rolls 4 and 5 are aligned and wound while abutting and guiding the wire. Reciprocates in the direction of the rotation axis.

  Specifically, for example, FIG. 1 shows a state in which the wire unwound from the bobbin 3 is wound around the bobbin 2 via a conveyance path defined by at least one roller (not shown), and the guide roll 5 is separated from the wire W1 immediately after being unwound from the bobbin 3, since the wire is unwound from the corresponding bobbin 3. On the other hand, since the wire is wound around the corresponding bobbin 2, the guide roll 4 contacts the wire W <b> 2 immediately before being wound around the bobbin 2, and guides the wire W <b> 2 to be wound around the bobbin 2. doing. Further, the guide roll 4 reciprocates in the direction of the rotation axis as shown by a white arrow A1 while abutting and guiding the wire W2. As a result, the wire can be wound on the bobbin 2 by aligned winding.

  After almost all of the wire wound around the bobbin 3 is unwound and wound on the bobbin 2, the rotation direction of the rotary drive shaft 1 is reversed so that the wire is unwound from the bobbin 2 and the above described After traveling in the reverse direction on the transport path, the operation of winding with the bobbin 3 is started. At this time, the guide roll 4 moves in the direction perpendicular to the rotation axis as shown by the white arrow A2 and is separated from the wire, while the guide roll 5 moves in the direction perpendicular to the rotation axis and contacts the wire. Guide in touch. The guide roll 5 reciprocates in the direction of the rotation axis while maintaining the contact state. As a result, the wire can be wound on the bobbin 3 by aligned winding.

  By repeating the above-described operation, the wire can be reciprocated along a predetermined conveyance path. At that time, the semi-cured ALC block is moved so as to cross the above-described wire conveyance path. Can be cut into shapes. Since the bobbin that is to be wound is always wound by aligned winding, the bobbin that is to be wound can be prevented from riding on the wire in an oblique direction or causing kinks. It is possible to obtain a flat finish having no trace of the kink or trace of the wire being diagonally overlapped on the wire cut surface of the cured body.

  In addition, as for the traveling speed of the wire at the time of cut | disconnecting a semi-hardened body, it is desirable to set it as about 10 times or less to the moving speed of the semi-hardened body which crosses the conveyance path | route of the said wire. When the traveling speed of the wire is slower than the moving speed of the semi-cured body, the effect of smoothing the cut surface may be reduced. On the other hand, if it becomes faster than 10 times the moving speed of the semi-cured body, the required wire length becomes too long and it becomes impractical.

  The above-described axial reciprocation of each guide roll can be realized by rotatably supporting one end of the guide roll via a general reciprocating means such as a ball screw. In this case, the reciprocating speed and stroke length of each guide roll in the axial direction may be adjusted as appropriate so that good alignment winding is performed during winding, but in general, the winding bobbin makes one rotation. It is preferable that each winding is aligned and wound so as to move in the axial direction by the same distance as the wire diameter. Moreover, the movement of the guide roll between the position away from the wire and the position in contact with the wire may be performed, for example, by moving the support portion supporting the reciprocating means with a rack and a pinion. The operation timing in this case may be operated in accordance with, for example, the reversal of the rotary drive shaft 1.

  The winding portion around which the wire is wound in each guide roll is reduced in diameter so as to become thinner toward the central portion in the axial direction, and the wire can be fitted over the entire circumference in the central portion in the axial direction. It is preferable that one guide groove is provided. Thus, when the rotation drive shaft 1 is reversed, even if the guide roll corresponding to the bobbin that switches from unwinding to winding is separated at an arbitrary position in the axial direction, the guide roll moves toward the contact position. When the wire W is pressed against the wire, the wire W that contacts the reduced diameter portion 10 slides toward the axial center along the slope of the reduced diameter portion 10 and drops into the guide groove 11 as shown in FIG. Is included. Thereby, since a wire is always positioned in the axial direction center part of a guide roll, the function of aligned winding can be exhibited reliably.

  A pair of bobbins 2 and 3 that are coaxially attached to a rotational drive shaft 1 that can rotate forward and backward as shown in FIG. 1 and two pairs of bobbins 2 and 3 that are provided in parallel to the pair of bobbins 2 and 3, respectively. A wire transport mechanism comprising guide rolls 4 and 5 was prepared. Both ends of a piano wire having an outer diameter of 0.9 mm were respectively engaged with the pair of bobbins 2 and 3 and then wound around one side. Then, by rotating the rotary drive shaft 1 forward and backward, the piano wire was reciprocated at a travel speed of 24 m / min by roll-to-roll along a conveyance path passing through a reverse roll (not shown). At that time, the semi-cured ALC block was moved so as to cross the transport path, and the ALC block was cut into slices.

  Each of the guide rolls 4 and 5 is separated from the piano wire when the piano wire is unwound from the corresponding bobbin, and is indicated by a white arrow A1 while being in contact with the piano wire when the piano wire is wound around the corresponding bobbin. Were reciprocated in the direction of the rotation axis. The speed of the reciprocating motion was adjusted so as to move by 0.9 mm in the axial direction every time the corresponding bobbin made one rotation. As a result, as shown in FIG. 3, the piano wire could be well aligned and wound around the bobbin. Moreover, when the cut surface of the ALC block after cutting | disconnection was confirmed visually, there was no trace which the kink trace and the piano wire overlapped diagonally, and it was cut | disconnected flat. Next, when the ALC block was cut into slices in the same manner as described above at a piano wire traveling speed of 40 m / min, in this case as well, it was possible to cut the same without any problems.

DESCRIPTION OF SYMBOLS 1 Rotation drive shaft 2, 3 Pair of bobbins 4, 5 Guide roll W Wire W1 Wire immediately after unwinding W2 Wire immediately before being wound 10 Reduced diameter portion 11 Guide groove

Claims (2)

A pair of bobbins attached coaxially to a rotational drive shaft capable of rotating in the forward and reverse directions and transporting a cutting wire in a reciprocating manner in a roll-to-roll manner; and at least one roller defining a transportation path of the wire; A wire transport mechanism comprising two guide rolls provided in parallel in the vicinity of the pair of bobbins,
Each guide roll reciprocates in the direction of the rotation axis so that when the wire is unwound from the corresponding bobbin, the guide roll is separated from the wire, and when the wire is wound around the corresponding bobbin, the guide roll is in contact with the wire and is aligned and wound. And
The winding portion around which the wire is wound in each of the two guide rolls is reduced in diameter so as to become thinner toward the central portion in the axial direction, and over the entire circumference in the central portion in the axial direction, A wire transport mechanism, characterized in that a single guide groove having a substantially U-shaped cross section is provided in such a size that the wire just fits and is positioned at the central portion in the axial direction . A cutting apparatus for a semi-cured ALC block, comprising the wire transport mechanism according to claim 1 .