JP3940910B2 - Metal rotating rotor and method for manufacturing the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary rotor for a suction port used in a vacuum cleaner and a method for manufacturing the same.
[0002]
[Prior art]
As a conventional method of manufacturing a metal rotating rotor, there is a method of manufacturing by twist extrusion molding as disclosed in JP-A-4-259429.
[0003]
Further, as shown in JP-A-7-178016, a method is known in which a straight extrusion is once performed by an extrusion molding apparatus and then a twisting process is performed around the axis.
[0004]
[Problems to be solved by the invention]
However, in twist extrusion molding, it is difficult to produce a product that is accurately twisted at a set angle, and there is a problem that accuracy cannot be maintained unless a separate twisting step is provided after extrusion. In addition, the method of twisting around the axis after extruding straightly requires two steps, resulting in poor manufacturing efficiency and high cost.
[0005]
The present invention has been made in view of the above points, and it is an object of the present invention to provide a method of manufacturing a rotary rotor that can be accurately twisted to a predetermined angle and does not increase costs.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a method of manufacturing a metal rotary rotor constituting a rotary brush provided in the vicinity of a suction opening for a vacuum cleaner, wherein a circle having a through hole substantially in the same shape as the rotor cross section is provided in front of the extrusion molding device A holding plate on which a plate is rotatably attached is provided in a direction orthogonal to the traveling direction of the rotary rotor material, and the rotary rotor material extruded from the extrusion molding device is extruded through the through hole and simultaneously with the disk Is characterized in that twisting is performed so as to form a spiral with a predetermined twist angle by rotating the.
[0007]
The invention according to claim 2 is characterized in that the extrusion molding apparatus extrudes the rotating rotor material straightly in a straight line.
[0008]
The invention of claim 3 is characterized in that the extrusion molding apparatus twists and extrusion-molds the rotating rotor material with a twisting die or a rotating die.
[0009]
According to the invention of claim 4, a plurality of holding plates are arranged in series in the extrusion molding direction, the rotational speeds of the discs installed on the plurality of holding plates are varied, and the holding plates are installed on the holding plate closest to the extrusion molding apparatus side. It is characterized in that the rotational speed of the disc made is set to be the slowest and the rotational speed is increased as the distance from the extrusion molding apparatus increases.
[0010]
The invention of claim 5 is provided with an adjustment holding plate in which an adjustment disk is installed in front of the holding plate, and the rotation speed of the adjustment disk is set to be larger than the rotation speed corresponding to the target set angle. It has a special feature.
[0011]
According to a sixth aspect of the present invention, there is provided a twist angle stabilizing holding plate in which a twist angle stabilizing disc is installed in front of the holding plate, and the rotational speed of the twist angle stabilizing disc corresponds to a target set angle. It is characterized in that the rotational speed is set.
[0012]
The invention according to claim 7 is provided with a gripping mechanism and a mechanism for applying a tensile force in the pushing direction of the rotating rotor material in front of the holding plate, and rotates so that the rotating rotor material is twisted at a predetermined angle. The rotor material is rotated around the axis while gripping the end of the rotor material, and the rotating rotor material is pulled in the pushing direction by applying a predetermined tensile force by a tensile force adding mechanism.
[0013]
According to an eighth aspect of the present invention, in the metal rotary rotor constituting the rotary brush provided in the vicinity of the suction opening for the vacuum cleaner, a disk having a through-hole having substantially the same shape as the rotor cross section is rotated in front of the extrusion molding device. A holding plate that is attached in a possible manner is provided in a direction perpendicular to the traveling direction of the rotary rotor material, and the rotary rotor material extruded from the extrusion molding device is passed through the through hole to perform extrusion molding and simultaneously rotate the disk. Thus, twisting is performed so as to form a spiral with a predetermined twist angle, and the spiral rotating rotor material subjected to the twist processing is cut into a predetermined length and molded.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a rotating brush used for a vacuum cleaner suction port. The rotating brush 1 has the following configuration. The metal rotary rotor 11 has a spiral groove formed on the outer periphery thereof, and a cleaning body such as a blade 12 or a brush 13 is inserted into the groove. Brackets 14 and 15 and a bearing 16 integrated with a rotary shaft are attached to both ends of the rotary rotor so as to be rotatably attached to the suction port body.
[0015]
FIG. 2 shows the first and second embodiments of the present invention. Here, 21 is an extrusion molding apparatus, and 22 is a rotating rotor material. Reference numeral 23 denotes a holding plate. One or more holding plates 23 are installed in a direction orthogonal to the traveling direction of the rotary rotor material 22. The holding plate 23 is provided with a rotatable disc 25 having a through-hole 24 having substantially the same shape as the cross section of the rotary rotor material 22 at the center.
[0016]
In the first embodiment, the rotary rotor material 22 extruded by the extrusion molding device 21 passes through the through hole 24 provided in the center of the disk 25. In addition, a predetermined twist is applied to the rotating rotor material 22 by extruding the rotating rotor material 22 by the extrusion molding device 21 and simultaneously rotating the disk 25 by external power (not shown).
[0017]
In this method, since the twist angle is determined by the extrusion speed and the rotational speed of the disk, it is possible to manufacture a rotary rotor having a different twist angle by changing the rotational speed of the disk 25 while keeping the extrusion speed constant. It can be done. In the present embodiment, the extrusion molding apparatus is described, but a continuous casting apparatus or the like may be used as long as it can obtain a rotating rotor material having a certain length. In FIG. 2, one disc 25 is provided on the holding plate 23. However, a plurality of discs 25 may be installed according to the number of the rotary rotor materials 22 extruded from the extrusion molding device 21. Further, in FIG. 2, the number of holding plates 23 is two, but the present invention is not limited to this. Further, in the case where a plurality of holding plates 23 are installed, the rotating rotor material 22 is passed through the through holes 24 without rotating the circular plate 25 installed on the holding plate 23 on the side close to the extrusion molding device 21, and the extrusion is performed. By rotating the disc 25 installed on the holding plate 23 on the side farther from the molding device 21 and passing the rotary rotor material 22 through the through hole 24 provided in the disc 25, the rotary rotor material 22 is made to pass. It can also be twisted to a predetermined angle. In this case, since the rotating rotor material immediately after extrusion molding is unstable and avoids the highest temperature, the twist can be started after the temperature has dropped slightly through the through hole of the disk without rotation once. The twist angle and bend are stable.
[0018]
In the second embodiment, the extrusion molding apparatus 21 is a twist extrusion molding apparatus 21 that performs extrusion while twisting the rotary rotor material 22. In this case, the rotating rotor material 22 extruded while twisting can be further twisted by the rotation of the disc 25 when passing through the through hole 24 provided in the disc 25 installed on the holding plate 23, Also, the twist can be stabilized.
[0019]
Next, the third embodiment is a case where the extrusion molding device 26 of FIG. 3 is a linear extrusion molding device 26 for straightly extruding the rotating rotor material 27 to be extruded.
[0020]
In this case, since the rotating rotor material 27 extruded straight passes through the through hole 24 provided in the disc 25 installed on the holding plate 23, a twist is formed by rotating the disc 25. is there.
[0021]
Next, a fourth embodiment is shown in FIG. In this embodiment, the rotary rotor material 22 extruded from the extrusion molding device 21 is inserted into through holes 24a, 24b, and 24c provided in the discs 25a, 25b, and 25c installed in the plurality of holding plates 23a, 23b, and 23c. Pass through.
[0022]
The rotational speeds of the discs 25a, 25b, and 25c are set so that the disc 25a becomes the slowest, and the discs 25a, 25b, and 25c are set so as to become faster as they move away from the extrusion molding apparatus 21. Thereby, the rotating rotor material 22 is gradually twisted step by step, and is set to have a predetermined twist angle when it passes through the last through hole 24c.
[0023]
Note that the number of holding plates 23 is not limited to three as in the present embodiment, and the number can be increased or decreased so that the desired twist angle can be stably obtained.
[0024]
Next, fifth and sixth embodiments will be described with reference to FIG. In the fifth embodiment, the rotary rotor material 22 extruded from the extrusion molding device 21 passes through the through hole 24 provided in the disk 25 installed on the holding plate 23, and the target angle is obtained by the rotation of the disk 25. To be twisted. Further, an adjustment holding plate 30 is further provided in front of the holding plate 23, and the speed at which the rotational speed of the adjustment disc 31 installed on the adjustment holding plate 30 is slightly larger than the target setting angle. It is set to.
[0025]
As a result, the rotating rotor material 22 passes through the through hole 32 provided in the adjustment disc 31, thereby correcting the return of twist due to backlash or the like, and obtaining a predetermined twist angle. Therefore, it is only necessary to install as many adjustment holding plates 30 as necessary to stabilize the twist angle. Note that the number of holding plates 23 installed behind the adjusting holding plate 30 (on the side of the extrusion molding device 21) is not limited to that shown in FIG. 5, and a plurality of holding plates 23 can be installed.
[0026]
Next, the sixth embodiment is a case in which a twist angle stabilizing holding plate 33 is installed in place of the adjustment holding plate 30 shown in the fifth embodiment. The twist angle stabilizing disk 34 is installed on the twist angle stabilizing holding plate 30, and the rotational speed of the twist angle stabilizing disk 34 is set to a target set angle.
[0027]
As a result, the rotating rotor material 22 passes through the through hole 35 provided in the twist angle stabilizing disk 34, thereby correcting the return of twist due to backlash or the like, and obtaining a predetermined twist angle. Therefore, it is sufficient to install as many twist angle stabilization holding plates 33 as necessary to stabilize the twist angle. Note that the number of holding plates 23 installed behind the twist angle stabilizing holding plate 33 (on the side of the extrusion molding apparatus 21) is not limited to that shown in FIG. 5, and a plurality of holding plates 23 can be installed.
[0028]
Next, a seventh embodiment will be described with reference to FIG. The rotary rotor material 22 extruded from the extrusion molding device 21 passes through a through hole 24 provided in a disk 25 installed on one or a plurality of holding plates 23, and then passes through the rearmost through hole 24. The tip of the rotary rotor material 22 is gripped by a device 39 having a gripping mechanism and a tensile force application mechanism that can rotate around the axis, and a predetermined angle is applied while applying a tensile force in the pushing direction of the rotary rotor material 22. It is rotated around the axis so that it can be twisted.
[0029]
【The invention's effect】
According to a first aspect of the present invention, there is provided a method of manufacturing a metal rotary rotor constituting a rotary brush provided in the vicinity of a suction opening for a vacuum cleaner, wherein a circle having a through-hole having substantially the same shape as the rotor cross section is provided in front of the extrusion molding device. A holding plate on which a plate is rotatably attached is provided in a direction orthogonal to the traveling direction of the rotary rotor material, and the rotary rotor material extruded from the extrusion molding device is extruded through the through hole and simultaneously with the disk Therefore, it is not necessary to provide the twisting process independently, and the manufacturing cost can be reduced. In addition, since the target twist angle can be obtained by adjusting the speed of the disk, it is possible to cope with various specifications with the same apparatus and to improve the production efficiency.
[0030]
The invention of claim 2 is characterized in that the extrusion molding apparatus extrudes the rotating rotor material straightly, so that the rotating rotor material extruded linearly has very good dimensional accuracy and penetrates the disk. High dimensional accuracy can be maintained even after being twisted through the hole. In addition, a die for extruding in a straight line is economical because it is cheaper, has a longer life, and is easier to maintain than a twisting die.
[0031]
The invention of claim 3 is characterized in that the extrusion molding apparatus is characterized in that the rotating rotor material is twisted and extruded with a twisting die or a rotating die. Thus, a rotating rotor with an excellent rotational balance can be manufactured without impairing the insertability of the blades and brushes even at a large twist angle that makes insertion difficult or the rotational balance becomes poor.
[0032]
Furthermore, even if the rotary rotor has a hollow portion whose cross-sectional shape tends to collapse, after the extrusion with a twisting die to the vicinity of the target twist angle, it is sufficient to twist the remaining insufficient angle by rotating the disk, A highly accurate hollow rotary rotor can be manufactured without greatly breaking the shape.
[0033]
According to the invention of claim 4, a plurality of holding plates are arranged in series in the extrusion molding direction, the rotational speeds of the discs installed on the plurality of holding plates are varied, and the holding plates are installed on the holding plate closest to the extrusion molding apparatus side. Since the rotation speed of the disc is set to be the slowest and the rotation speed is increased as the distance from the extrusion molding device increases, the rotation speed can be gradually changed without changing the twist angle rapidly. The angle can be accurately created.
[0034]
The invention of claim 5 is provided with an adjustment holding plate in which an adjustment disk is installed in front of the holding plate, and the rotation speed of the adjustment disk is set to be larger than the rotation speed corresponding to the target set angle. Since it has particular features, it can be molded while correcting the return of the twist due to backlash or the like, and the twist angle can be made with high accuracy.
[0035]
According to a sixth aspect of the present invention, there is provided a twist angle stabilizing holding plate in which a twist angle stabilizing disc is installed in front of the holding plate, and the rotational speed of the twist angle stabilizing disc corresponds to a target set angle. Since the rotation speed is set, the molding can be performed while preventing the twist from returning due to a backlash or the like, and the twist angle can be accurately created.
[0036]
The invention according to claim 7 is provided with a gripping mechanism and a mechanism for applying a tensile force in the pushing direction of the rotating rotor material in front of the holding plate, and rotates so that the rotating rotor material is twisted at a predetermined angle. One or more of the rotor material is characterized in that it rotates around the axis while gripping the end of the rotor material and pulls the rotating rotor material in the pushing direction by applying a predetermined tensile force by the tensile force application mechanism. Since the straightness of the rotating rotor material lost due to the resistance generated by passing through the through-holes can be maintained, and rotation can also be applied by the gripping mechanism, a stable target twist angle can be obtained.
[0037]
According to an eighth aspect of the present invention, in the metal rotary rotor constituting the rotary brush provided in the vicinity of the suction opening for the vacuum cleaner, a disk having a through-hole having substantially the same shape as the rotor cross section is rotated in front of the extrusion molding device. A holding plate that is attached in a possible manner is provided in a direction perpendicular to the traveling direction of the rotary rotor material, and the rotary rotor material extruded from the extrusion molding device is passed through the through hole to perform extrusion molding and simultaneously rotate the disk. Since it is characterized by being twisted so as to become a spiral with a predetermined twist angle, and being formed by cutting the spiral rotating rotor material subjected to the twist processing into a predetermined length. Since the target twist angle can be obtained by adjusting the speed of the disk, and the same device can cope with various specifications and the production efficiency is good, a very inexpensive rotary rotor can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a rotating brush.
FIG. 2 is an explanatory diagram showing first and second embodiments of the present invention.
FIG. 3 is an explanatory diagram showing a third embodiment of the present invention.
FIG. 4 is an explanatory view showing a fourth embodiment of the present invention.
FIG. 5 is an explanatory diagram showing fifth and sixth embodiments of the present invention.
FIG. 6 is an explanatory view showing a seventh embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotating brush 11 Rotating rotor 12 Blade 13 Brushes 13 and 15 Bracket 16 Bearing 21 Extrusion molding device 22 Rotating rotor material 23 Holding plate 24 Through hole 25 Disc 39 Apparatus provided with a gripping mechanism and a tensile force adding mechanism

Claims (8)

In a method for manufacturing a metal rotary rotor that constitutes a rotary brush provided near the suction opening for a vacuum cleaner, a disk having a through-hole having substantially the same shape as the rotor cross section is rotatably attached to the front of the extrusion molding device. A holding plate is provided in a direction orthogonal to the traveling direction of the rotary rotor material, and the rotary rotor material extruded from the extrusion molding device is passed through the through-hole to perform extrusion molding and at the same time rotate the disk A method of manufacturing a rotary rotor, characterized in that twisting is performed so as to form a spiral with a twist angle. 2. The method of manufacturing a rotary rotor according to claim 1, wherein the extrusion molding apparatus linearly extrudes the rotary rotor material. 2. The method of manufacturing a rotary rotor according to claim 1, wherein the extrusion molding apparatus twists and extrudes the rotary rotor material with a twisting die or a rotating die. A plurality of holding plates are arranged in series in the extrusion molding direction, and the rotation speeds of the disks installed on the plurality of holding plates are made different from each other. 4. The method of manufacturing a rotary rotor according to claim 1, wherein the rotational speed is set to be the slowest and the rotational speed is increased as the distance from the extrusion molding apparatus increases. An adjustment holding plate in which an adjustment disk is installed in front of the holding plate is provided, and the rotation speed of the adjustment disk is set to be larger than the rotation speed corresponding to a target setting angle. The manufacturing method of the rotating rotor in any one of 1-3. A twist angle stabilizing holding plate having a twist angle stabilizing disk installed in front of the holding plate is set, and the rotation speed of the twist angle stabilizing disk is set to a rotation speed corresponding to a target set angle. The method for manufacturing a rotary rotor according to any one of claims 1 to 3. A holding mechanism and a mechanism for applying a tensile force in the pushing direction of the rotating rotor material are provided in front of the holding plate, and the end of the rotating rotor material is gripped so that the rotating rotor material is twisted at a predetermined angle. The rotating rotor according to any one of claims 1 to 3, wherein the rotating rotor material is pulled in the push-out direction by being rotated about an axis while being applied with a predetermined tensile force by a tensile force adding mechanism. Production method. In a metal rotary rotor constituting a rotary brush provided in the vicinity of the suction opening for a vacuum cleaner, a holding plate in which a circular plate having a through-hole having substantially the same shape as the rotor cross section is rotatably mounted in front of the extrusion molding device. The rotating rotor material is provided in a direction orthogonal to the traveling direction of the rotating rotor material, and the rotating rotor material extruded from the extrusion molding device is passed through the through-hole to perform extrusion molding, and at the same time, by rotating the disk, a predetermined twist angle A rotary rotor characterized by being twisted so as to have a spiral shape, and formed by cutting the twisted rotary rotor material into a predetermined length.

Images