KR20060120410A - Rotary cutting apparatus - Google Patents

Abstract

A rotary cutting apparatus is provided to keep the sliding contact condition with the cutting blades of the perimeter of the rotary blade by extension-installing the support projection through the whole width of the fixing blade. A rotary cutting apparatus is composed of a rotary blade(1) formed with a cutting blade(13) at the perimeter and rotated around the shaft; a housing(2) receiving the rotary blade; a plate fixing blade(3) formed with plural blade holes vertically arranged to follow the perimeter of the rotary blade and attached at the aperture mounted at the housing. The object projected from each blade hole in the fixing blade is cut by the operation of the cutting blade of the rotary blade sliding-contacted in the fixing blade. Support projections(47) are each installed at the vicinity of the edge of one side and at the vicinity of the edge of the other side.

Description

Rotary cutting device {ROTARY CUTTING APPARATUS}

1 is a side cross-sectional view of a rotary cutting device according to the present invention.

2 is an external perspective view of the rotary blade.

3 is an external perspective view of the central plate.

Figure 4 is an external perspective view of the rotary blade is fixed to the central plate.

5 is a side view of the rotary blade is fixed to the central plate.

6 is a side cross-sectional view of a housing that accommodates a rotary blade.

It is a perspective view which expands and shows the vicinity of the installation position of the attachment hole of a fixed blade.

8 is an external perspective view of the fixed blade.

9 is an external perspective view illustrating a state in which a fixed blade is held in a holder.

10 is a side cross-sectional view showing a state in which a fixed blade is held in a holder.

<Description of the code>

1: rotary blade 2: housing

3: fixed blade 4: holder

12 wing plate 13 cutting blade

14: weight 20: attachment hole

30: blade hole 31: locking hole

46: hook projection 47: support projection

The present invention relates to a rotary cutting device used to cut and remove an object such as fluff generated on the surface of a textile product.

In textile products such as garments and rugs, there is a problem that the fibers on the surface are agglomerated by the action of friction applied during use, which causes the appearance of the product and damages the appearance of the product. Cutting devices have been proposed (see, for example, Patent Document 1).

This rotary cutting device is provided with the rotary blade which rotates about an axis inside a housing, and the sheet-shaped fixed blade attached so that the opening provided in the said housing may be covered along the outer periphery of this rotary blade. A cutting blade extending in the axial length direction is provided on the outer circumference of the rotary blade, and a plurality of through holes (blade holes) are provided on the fixed blade in parallel with each other vertically and horizontally. The cutting blade and the blade hole are configured to slide in contact with each other to achieve a cutting action.

The rotary cutting device configured as described above is used by rotating the rotary blade against the outer surface of the fixed blade covering the opening of the housing on the surface of the fiber product having the fluff generated. Thereby, the said fluff is accommodated in the blade hole provided in parallel with the fixed blade, protrudes inward, and is cut | disconnected by the action of the cutting blade of the rotary blade which slides in contact with this blade hole.

Further, in the rotary cutting device disclosed in Patent Document 1, the housing is connected to a suction hose of a cleaning machine, and the intake to the suction hose is configured to occur through an opening provided in the housing, and the rotary blade It is comprised as an impeller which generate | occur | produces a rotational force by the action of intake air.

According to this structure, since a dedicated power source for the rotation of the rotary blade is unnecessary, and the reception of the fluff in each blade hole of the fixed blade is facilitated by the action of the intake air, it is a simple configuration to remove the fluff of the target fiber product. It is possible to reliably perform the process, and furthermore, since the cut fluff is sucked into the suction hose together with the intake air and is recovered, the post-treatment is unnecessary and the convenience of use is improved.

[Patent Document 1] Japanese Patent Application Laid-Open No. 7-88797

By the way, in the rotary cutting device comprised as mentioned above, in order to make sure the cutting | disconnection of the fluff accommodated in each blade hole, the cutting blade provided in the circumferential surface of the said rotary blade has a clearance in the inner surface of the said fixed blade provided with the blade hole. It is important to make sliding contact without.

However, the fixed blade is a thin plate that is fixedly supported along the opening of the housing, and since the housing is a molded article made of resin hardly obtaining high shape accuracy, the gap between the cutting edge of the rotary blade and the blade hole of the fixed blade is excluded. It is difficult to assemble.

A rotary cutting device configured to cut an object between a rotary blade having a cutting blade on its outer periphery and a thin plate-shaped fixed blade having a blade hole is also used as an electric shaver. In this type of shaver, the gap between the cutting edge is eliminated as much as possible by improving the forming precision and the processing precision of the fixed blade, thereby realizing a satisfactory cutting feeling due to reliable cutting.

However, in the rotary cutting device configured to cut and remove the fluff generated on the surface of the fiber product, a large-area fiber product such as a carpet is also targeted, so that the size of the fixed blade together with the rotary blade and the housing is unavoidable. In addition, as in the shaver, it is difficult to eliminate the gap by improving the forming and processing precision of the fixed blade.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and by improving the attachment form of the fixed blade covering the opening of the housing provided along the outer circumference of the rotary blade, there is no gap between the blade hole provided in the fixed blade and the cutting blade provided in the rotary blade. It is an object of the present invention to provide a rotary cutting device capable of reliably cutting a projection from a blade hole by sliding contact.

The rotary cutting device according to the first aspect of the present invention includes a rotary blade having a cutting blade on its outer periphery and rotating around an axis, a housing accommodating the rotary blade, and a plurality of blade holes arranged in length and width. A cutting blade of the rotary blade having a plate-shaped fixed blade attached to an opening provided in the housing so as to follow an outer circumference, and slidingly contacting the inner surface of an object projecting from each blade hole to the inner surface of the fixed blade. In the rotary cutting device cut | disconnected by an action, the said fixed blade cancends the one side edge of the rotation direction upstream of the said rotating blade to the peripheral edge part of the said opening, and can be displaced freely in an in-plane direction and a plane perpendicular direction. It is easy to move so that it may be attached.

In the present invention, the attachment of the fixed blade is performed so as to be freely displaced in the plane and perpendicular to the plane by the step support of the rotary blade upstream side of the rotary blade, the sliding contact between the cutting blade and the fixed blade on the circumference of the rotary blade It generates along the following displacement of the fixed blade according to the change of position, and it makes it possible to reliably and stably cut | disconnect at this sliding contact part.

Moreover, the rotary cutting device which concerns on 2nd invention of this invention is provided with the support protrusion which opposes the outer surface and the clearance gap of the said fixed blade, respectively in the vicinity of the said one edge and in the vicinity of the other edge located away from the said one edge. And the structure which allows displacement to the outer side of the said fixed blade by the hardness or curvature which makes only a contact part with one or both of the said support protrusions a support, It is characterized by the above-mentioned.

In this invention, the fixed blade which displaces outward under sliding contact with the cutting blade of a rotary blade is made to contact with one or both of the support protrusions which were arrange | positioned in the vicinity of the edge part of the side supported by the step, and the opposite side, respectively, By the hardness under the action of either of the supporting protrusions or by the bending under the action of both the supporting protrusions, the following displacement to the outside of the fixed blade can be reliably performed to realize a good sliding contact state.

In addition, the rotary cutting device according to the third invention of the present invention is characterized in that the supporting projection is provided to extend over approximately the entire width of the one edge or the other edge.

In the present invention, the supporting projection is brought into contact with the entire width of the fixed blade, the posture of the fixed blade in the state held by the supporting projection is stabilized, and the following displacement of the fixed blade is surely generated.

Furthermore, the rotary cutting device which concerns on the 4th invention of this invention is the vane wheel which the said housing has the connection part to the suction pipe of the cleaning machine, and the said rotary blade rotates by the action of the intake air sucked into the said suction pipe. It is characterized by.

In the present invention, the rotary blade is rotated by the action of the intake air to the suction pipe with the blade wheel, so that a dedicated drive source is unnecessary.

In addition, a plurality of weights are arranged on the rotational circumference of the rotary blade at equal intervals, the moment of inertia of the rotary blade is increased, the rotational force of the rotary blade generated by the action of intake is increased, and the rotational force of the weight is obtained. Reliable cutting between the cutting edge of the outer edge of the rotary blade and the blade hole can be realized without increasing the size and speed of the rotary blade.

In addition, in order to impart rotational force by the action of the intake air, the pivot is arranged between the plurality of wing plates provided on the rotary blade, and forms a plate shape to serve as a wing plate that imparts rotational force to the rotary blade. By the synergistic action of, the rotational force of the rotary blade can be made larger.

(Example)

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to drawings which showed embodiment. 1 is a side cross-sectional view of a rotary cutting device according to the present invention. As shown in the drawing, the rotary cutting device according to the present invention includes a rotary blade 1, a housing 2 for accommodating the rotary blade 1, and a fixed blade 3 that forms a plate.

The rotary blade 1 is arranged in the circumferential direction to the boss portion 11 of the center in which the rotary shaft 10 is fitted, and is provided with a plurality of wing plates 12 protruding in the radial direction outwards (six pieces in the figure). It is comprised as a vane provided integrally with 12 ..., One cutting edge 13, 13 ... is attached to the end of each vane 12, 12 ..., respectively, and each vane 12 , 12... Are attached to the central plate 14, 14.

2 is an external perspective view of the rotary blade 1. As shown in the figure, each of the vane plates 12, 12 ... is continuous to the leg portion 12a protruding outward from the boss portion 11 in the radial direction and to the end of the leg portion 12a. And a bent portion 12b that is bent to one side in the circumferential direction, and the bent portion 12b is formed with a slit 12c having an opening at an end thereof over the entire width thereof.

As shown in FIG. 2, the cutting blade 13 attached to the wing plate 12 includes a base portion 13a having a flat plate shape having a width substantially the same as that of the wing plate 12, and the base portion 13a. And a blade portion 13b which is continuous to one side and is bent to one side, and as shown by the arrow in FIG. 2, the base portion 13a is inserted into the slit 12c at the end of the wing plate 12, The blade portion 13b is attached in a direction opposite to that of the bent portion 12b.

In addition, flange portions 13c and 13c protrude outwardly on both sides of the base portion 13a of the cutting blade 13, and each wing plate on both sides of the end portions of the bent portion 12b of the blade plate 12. Notched grooves 12d and 12d are formed so as to be continuous on the same circumference between (12, 12 ...), and the cutting blades 13 inserted into the slit 12c of each wing plate 12 are all wing plates ( The flanges 13c and 13c on both sides are restrained by the stop rings (not shown) wound around the notch grooves 12d and 12d so as to be sandwiched between 12 and 12, and restrained from falling outward.

3 is an external perspective view of the central plate 14. As shown in the figure, the central plate 14 is connected to a main body plate 14a that curves at an appropriate curvature, and is substantially connected to a central portion of one side edge of the main body plate 14a, and toward the radially inner side of the curved circle. It is a plate made of metal having an extended sheet plate 14b. Positioning hole 14c and fixing hole 14d which penetrate the position separated by the predetermined length in the width direction in the thickness direction are provided side by side in the sheet board 14b, and positioning is carried out in the width direction center part of main-body board 14a. A cover portion 14e formed by cutting the corresponding portion of the installation width of the hole 14c and the fixing hole 14d so as to be substantially perpendicular to the sheet plate 14b is provided.

As shown in FIG. 2, the outer side of the boss | hub part 11 of the rotary blade 1 has the above-mentioned center plate 14, 14 ... in the substantially center of the width direction between each blade plate 12, 12 ... Fixing sheets 15, 15... For fixing are provided. The fixing sheet 15 has a sheet surface that is substantially orthogonal to the radial direction of the boss portion 10, and the positioning projection 15a protrudes from one side of the width direction, and the screw hole ( 15b) is formed.

The installation intervals of these positioning projections 15a and the screw holes 15b are aligned with the installation intervals of the positioning holes 14c and the fixing holes 14d in the sheet plate 14b of the central plate 14, and The fixing of the central plate 14 to the fixing sheet 15 fits the positioning hole 14c of the sheet plate 14b into the positioning projection 15a, and at this time, the inside of the fixing hole 14d. The sheet plate 14b is seated on the sheet surface of the fixing sheet 15 by tightening the fixing screw 16 (refer FIG. 4) to the screw hole 15b matched with the screw hole 15b.

4 is an external perspective view of the rotary blade 1 to which the central plate 14 is fixed, and FIG. 5 is a side view thereof, and as shown in these figures and FIG. 1, the central plate 14 is curved of the main body plate 14a. The direction is fixed so that it may become the same direction as the bending direction of the bent part 12b of the vane 12. On the other hand, the cover portion 14e provided in the central plate 14 is a straight line of the sheet plate 14b from between the wing plates 12 and 12 adjacent to each other in fixing the central plate 14 formed as described above. The in-perspective view is made possible, and the operation of inserting the positioning projection 15a into the positioning hole 14c and tightening of the fixing screw 16 to the screw hole 15b inside the fixing hole 14d is illustrated in FIG. 5. As shown by the arrow, it is provided in order to perform under perspective from the outer peripheral part of the rotary blade 1.

6 is a side cross-sectional view of the housing 2 containing the rotary blade 1. As shown in the figure, the housing 2 has a cylindrical shape having an inner diameter to accommodate the rotary blade 1, including cutting edges 13, 13... Attached to the ends of the wing plates 12, 12... As a hollow container, an attachment hole 20 to which the fixed blade 3 is attached and an air intake port 21 for intake of outside air are drilled at positions adjacent to each other in the circumferential direction, as described later. On the other side of the 20 and the intake port 21, a connection pipe 22 for connecting to a suction pipe of a cleaning machine (not shown) is integrally connected.

7 is an enlarged perspective view showing the installation position vicinity of the attachment port 20 of the fixed blade 3. As shown in the figure, the housing 2 has an appropriate height from the end wall 24 on the same side of the pressing rib 23, which is curved along the inside, of the attachment hole 20 installed through the outer circumference. It is installed. This pressing rib 23 is similarly provided in the end wall of the housing 2 on the opposite side to FIG. 7, and is located so as to surround both sides of the attachment port 20 in the width direction.

The attachment of the fixed blade 3 to the attachment opening 20 provided in this way is made through the holder 4. FIG. 8 is an external perspective view of the fixed blade 3, and as shown in the drawing, the fixed blade 3 has a plurality of blade holes 30, 30... On both sides of the installation area of these blade holes 30, 30 ..., the large area engaging holes 31, 31 ... are provided side by side along the edge of each side.

9 is an external perspective view showing a state where the fixed blade 3 is held by the holder 4, and FIG. 10 is a side cross-sectional view thereof. As shown in these figures, the holder 4 is a frame formed by providing a rectangular opening 41 in the center of the curved portion 40 which has a curvature corresponding to the outer shape of the housing 2 and is curved in an arc shape. The flat part 42 which contacts one side of the curved part 40 is provided with the fixing edge 44 provided with fixing brackets 43 and 43 on both sides of the width direction, and the flat part 45 which communicates with the other side of the curved part 45. ), A plurality of engaging projections 46, 46... Are arranged side by side. These locking projections 46 and 46 have a trapezoidal shape in which the inner thickness decreases from the base portion to the end portion, and each end portion is bent in a hook shape in the outward direction.

The number of installations and the intervals of installation of the locking projections 46, 46... As described above correspond to the number of installations and the intervals of installation of the locking holes 31, 31... Of the fixed blade 3. 9, as shown in FIG. 10, the side engaging edges 31, 31... Along the end edges of one side are fastened to the engaging projections 46, 46. It is mounted on the top and held in the state where the other end edge is mounted on the flat part 42.

Moreover, the supporting protrusions 47 and 47 protrude from the inner surface of the curved part 40 of the holder 4 in the vicinity of the both edges of the opening 41 along the flat part 42 and 45. As shown in FIG. These supporting protrusions 47 and 47 face the lower surface of the fixed blade 3 held as described above and have a semi-circular cross section of a small diameter as shown in FIG. 10, and as shown in FIG. 9. It extends over the full width of the holder 4.

As described above, the holder 4 holding the fixed blade 3 has one side (flat portion 45 side) at one side edge of the attachment opening 20 provided in the housing 2 as shown in FIG. 1. Inserting, and turning the inserted end as a pivot axis, and the mounting bracket 20 in the state to follow the arc portion 40, the fixing brackets 43, 43 installed on the other side (flat portion 42 side) ) Is attached to the same side of the attachment hole 20 by screwing. Accordingly, the fixed blade 3 is curved to follow the opening 41 provided in the arc portion 40 of the holder 4 by the action of the pressing ribs 23 and 23 provided on both sides of the attachment hole 20. In this case, the outer surface of the fixed blade (3) is opposed to the support protrusions (47, 47) protrudingly installed in the circular arc portion (40), as described above, in a state opposite to each other. do.

The fixed blade 3 attached in this manner can be freely displaced in the in-plane direction within the range of the clearance secured between the engaging holes 31, 31... And the engaging projections 46, 46. Further, in the direction perpendicular to the plane, the contact position can be freely displaced within the gap secured between the support protrusions 47 and 47, and also after the contact with the support protrusions 47 and 47, the contact position with either of the support protrusions 47 is adjusted. It is freely displaceable by the bending between the hardness serving as the support point and the contact positions with both the supporting protrusions 47 and 47.

The rotary cutting device which concerns on this invention comprised as mentioned above connects the connection pipe 22 of the housing | casing 2 to the suction pipe of a cleaning machine, and it is a connection pipe as shown by the white arrow in FIG. While intake air is generated in the 22, the fixed blade 3 attached to the attachment port 20 as described above is used in contact with the surface of the object, for example, the surface of a fiber product such as a carpet.

The inside of the housing 2 is in communication with the outside through the opening 41 provided in the holder 4 of the fixed blade 3 and the intake port 21 drilled in the circumferential wall, when the intake air as described above occurs, As shown by arrows in FIG. 1, the outside air is sucked into the inside of the housing 2, and the outside air is sucked in. The flow of intake air generated in this way is supported inside the housing 2. The rotary blade 1 is rotated counterclockwise in contact with the blade plates 12, 12... Of the rotary blade 1.

Moreover, the projections from the surface of the object to which the fixed blade 3 covering the opening 41 is abutted by the intake air generated through the opening 41, for example, the fluff generated on the surface of the carpet, are sucked in, and the fixed blade 3 Protrudes into the housing 2 from each blade hole 30, 30. At this time, inside the housing 2, the rotary blade 1 is rotated by the action of the intake air, and is attached to the outer circumference of the rotary blade 1, that is, the end of each wing plate 12, 12... Since the cutting blades 13, 13... Are in sliding contact with the inner surface of the fixed blade 3 in turn, the projections such as the fluff have a synergistic action between the blade holes 30, 30... Is cut by On the other hand, the cut material thus cut is sucked into the suction pipe through the connection pipe 22 together with the intake air, and is recovered to the dust collecting part of the cleaning machine.

In the rotary cutting device according to the present invention, the fixed blade (3) cantilever support one edge of the rotary blade (1) upstream by rotating the locking projection (46, 46 ...) of the holder (4). In other words, it is freely displaceable in the in-plane direction and in the perpendicular direction without any restraint on other parts. The fixed blade 3 attached in this way first contacts the cutting edge 13 installed on the outer circumference of the rotary blade 1 at the locking side, and the cutting blade 13 according to the rotation of the rotary blade 1 thereafter. Since the following displacement is caused by the combination of the above-described displacements in accordance with the movement of, sliding between the blade holes 30, 30... The contact is always made satisfactorily, and the above-mentioned cutting | disconnection in this sliding contact part can be made reliably and stably.

In addition, as described above, the sliding contact state is supported by the hardness of the fixed blade 3 in the state supported by any one of the support protrusions 47 and 47, or by the support protrusions 47 and 47 on both sides. Since it is maintained by the bending of the fixed blade 3 in a state, it is not necessary to excessively raise the shape precision and the assembly precision of this fixed blade 3. Therefore, as shown in the embodiment, it becomes possible to make good and stable cutting even in a large rotary cutting device on the premise that it is connected to the dust collecting pipe of the cleaning machine, and when applied to a small rotary cutting device such as a razor, Reduction of machining and assembly precision can contribute to reduction of product cost.

Moreover, since the support protrusions 47 and 47 which hold | maintain the fixed blade 3 during the operation | movement mentioned above are extended over the full width of the said fixed blade 3, these support protrusions 47 and 47 make it the full width. The posture of the fixed blade 3 held over is stable, and since the support protrusions 47 and 47 are only in line contact with the fixed blade 3 at each position, the displacement in the in-plane direction of the fixed blade 3 is fixed. Is less likely to be impaired, and the following displacement of the fixed blade 3 according to the rotation of the rotary blade 1 can be reliably performed.

On the other hand, in the above embodiment, the case where the rotary blade 1 is configured as a vane for generating a rotational force by the action of intake air into the housing 2 has been described. However, the rotary blade 1 is rotated by the transmission power from a rotational drive source such as an electric motor. Of course, the application of the present invention is also possible in a rotary cutting device having a rotary blade (1).

In the rotary cutting device according to the first invention of the present invention, the fixed blade attached by supporting only the edge of the rotary direction upstream side of the rotary blade is displaced in the in-plane and plane perpendicular directions in accordance with the rotation of the rotary blade. It becomes possible to reliably and stably cut the object by sliding contact with the cutting edge of the outer periphery, and therefore it is not necessary to excessively increase the machining and assembling precision of the fixed blade, so that it can be applied to a large apparatus.

Further, in the rotary cutting device according to the second aspect of the invention, since the fixed blade displaced outward in accordance with the rotation of the rotary blade is supported by the supporting protrusions contacted at two defined positions, the following displacement of the fixed blade is supported only by either one. It can be surely generated by the hardness in the knocked-down state or the bending in the state held by both sides, so that a good sliding contact state with the cutting blade outer circumference can be realized.

Moreover, in the rotary cutting device which concerns on 3rd invention, since the support protrusion extended over the whole width of the fixed blade, the attitude | position of the fixed blade in the state supported by this support protrusion is stabilized, The sliding contact state of can be kept good.

Moreover, in the rotary cutting device which concerns on 4th invention, since the housing which accommodates a rotary blade was made connectable to the suction pipe of a cleaning machine, and the rotary blade comprised as a vane was used, the rotary blade was acted on by the action of the intake air to a suction pipe. The present invention achieves an excellent effect, such that it is possible to rotate the motor, and does not require a dedicated drive source such as a motor, thereby making it possible to simplify the device configuration.

Claims (4)

A rotary blade having a cutting blade on its outer circumference and rotating around the shaft, a housing for accommodating the rotary blade, and a plurality of blade holes arranged side by side and along the outer circumference of the rotary blade to be attached to an opening provided in the housing In the rotary cutting device provided with the plate-shaped fixed blade which cuts the object which protrudes from each blade hole in the inner surface of this fixed blade by the action of the cutting blade of the said rotary blade sliding-contacted to the said inner surface, The fixed blade is supported by the cantilever by hooking one edge of the rotary blade upstream to the edge of the opening and supporting the cantilever, and being freely displaceable in the in-plane direction and the plane perpendicular direction. Rotary cutting device characterized in that. The support protrusions of claim 1, wherein the supporting protrusions facing each other with a gap between the outer surface of the fixed blade are provided in the vicinity of the one edge and in the vicinity of the other edge positioned away from the one edge. A rotary cutting device, characterized in that the displacement is allowed by a hardness or a warp that allows only a contact portion with one or both of the supporting protrusions to be supported. The rotary cutting device according to claim 2, wherein the support protrusion extends over approximately the entire width of the one edge or the other edge. The housing according to any one of claims 1 to 3, wherein the housing has a connection portion to a suction pipe of a cleaning machine, and the rotary blade is a vane that rotates by the action of intake air sucked into the suction pipe. Rotary cutting device characterized in that.

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