JP4219365B2 - Round fan manufacturing apparatus and round fan manufacturing method - Google Patents

Description

  The present invention relates to a technique for manufacturing a fan having a fan part and a handle part, and in particular, a fan is manufactured by bending a reinforcing plate forming a handle part and coupling it to a fan body forming a fan part. It is related to the technology.

  Generally, a tool called a fan is configured to have a fan part that is shaken to generate wind and a handle part that is gripped by a user to shake the fan part.

  Patent Document 1 discloses a structure of a conventional example of this type of fan. Specifically, this patent document 1 is disclosing the structure of the round fan manufactured by bending the reinforcement board which comprises a handle | pattern part, and couple | bonding with the fan body which comprises a fan part.

  Conventionally, this type of fan has been manufactured by punching out a fan body and a reinforcing plate from a plate-shaped material using a cutting die, and then bending the reinforcing plate by hand to join the fan body. However, with this manual work, it is difficult to produce a large amount of round fans in a short time.

  Patent Document 2 discloses a technique for automatically manufacturing a fan having a structure different from that disclosed in Patent Document 1. The round fan disclosed in Patent Document 2 is configured to include a round fan aggregate and two sheets of paper that form a circular shape together, which are respectively attached to both sides of the round fan aggregate. Among them, the wax aggregate is configured to integrally have a bone portion on which paper is to be pasted on both sides and a handle portion on a single plane.

  The conventional fan manufacturing apparatus disclosed in Patent Document 2 includes: (a) a conveyor that conveys fan fan aggregate; and (b) a fan aggregate loading station that loads one fan aggregate into the conveyor one by one; (c) a first pasting machine that pastes paper one by one on the lower surface of the fan aggregate supported by the conveyor; and (d) a sheet of paper one by one on the upper surface of the fan aggregate supported by the conveyor. It is comprised so that the 2nd sticking machine to attach may be included.

  Specifically, in this conventional fan manufacturing apparatus, the conveyor is configured as an endless chain that is circulated in one direction, having a lower linear conveying section and an upper linear conveying section that both extend horizontally. . The fan aggregate charging station is disposed at an upstream position of the lower straight conveying section of the conveyor. The 1st and 2nd sticking machines are arrange | positioned in the downstream position of the lower side linear conveyance part.

  More specifically, in this conventional fan manufacturing apparatus, the conveyor grips the handle part of the fan aggregate in such a posture that the bone part of the fan aggregate projects laterally from the conveyor. However, it is configured to carry. That is, this conveyor is configured to convey the fan aggregate while holding it in a sideways and cantilevered manner.

  As a result, the fan aggregate is conveyed by the conveyor in a posture that is exposed on both surfaces of the bone portion. The conveyor further conveys the fan aggregate so that it can be stopped intermittently.

  The first and second applicators are arranged so as to face each other in the vertical direction with a bone portion protruding in the lateral direction from the conveyor out of the round fan aggregate supported by the conveyor. As a result, each of the first and second sticking machines is opposed to both surfaces which are exposed surfaces of the bone portion of the fan aggregate.

  During operation, the first sticking machine picks up the uppermost paper one by one from the first paper stock shelf that stores the paper in a stacked state below the bone portion of the fan aggregate supported by the conveyor. Then, the adsorbed paper is reversed and positioned around the horizontal axis, and then the positioned paper is adhered to the lower surface of the bone portion while the conveyor is stopped.

  On the other hand, during operation, the second sticking machine removes the uppermost paper from the second paper stock shelf that stores the paper in a stacked state above the bone portion of the fan aggregate supported by the conveyor. Each sheet is adsorbed one by one, and the adsorbed paper is rotated by 180 degrees around the vertical axis and positioned, and then the positioned paper is adhered to the upper surface of the bone portion while the conveyor is stopped.

Thus, in this conventional fan manufacturing apparatus, when the fan aggregate is transported to the planned bonding position, it is stopped, and in the stopped state, each paper on each surface of the fan aggregate is against each surface. Bonded by approaching at right angles.
JP 2003-70515 A JP 2001-190316 A

  Patent Document 1 discloses a structure of a conventional example of a fan that is manufactured by bending a reinforcing plate that forms a handle portion and coupling it to a fan body that forms a fan portion. However, this patent document 1 does not disclose a technique for automatically manufacturing a fan of this type.

  On the other hand, Patent Document 2 discloses a conventional example in which a round fan is automatically manufactured by bonding paper to both sides of a bone portion of the round fan aggregate. However, this Patent Document 2 discloses a technique for automatically manufacturing such a round fan by bending a reinforcing plate constituting a handle portion and coupling it to a round fan body constituting a fan portion. Is also not disclosed.

  As described above, Patent Documents 1 and 2 each automatically or independently combine a fan produced by bending a reinforcing plate constituting a handle portion and joining to a fan body constituting a fan portion, either individually or in combination with each other. Does not disclose or even suggest the technology to manufacture.

  Against the backdrop of such circumstances, the present invention has an object to provide a technology for automatically manufacturing a fan by bending a reinforcing plate constituting a handle part and coupling it to a fan body constituting a fan part. It was made.

  The following aspects are obtained by the present invention. Each aspect is divided into sections, each section is given a number, and is described in a form that cites other section numbers as necessary. This is to facilitate understanding of some of the technical features that the present invention can employ and combinations thereof, and the technical features that can be employed by the present invention and combinations thereof are limited to the following embodiments. Should not be interpreted. That is, it should be construed that it is not impeded to appropriately extract and employ the technical features described in the present specification as technical features of the present invention although they are not described in the following embodiments.

  Further, describing each section in the form of quoting the numbers of the other sections does not necessarily prevent the technical features described in each section from being separated from the technical features described in the other sections. It should not be construed as meaning, but it should be construed that the technical features described in each section can be appropriately made independent depending on the nature.

(1) A fan manufacturing apparatus for manufacturing a fan having a fan part and a handle part,
The handle portion has a structure in which an intermediate plate portion is sandwiched between an upper plate portion and a lower plate portion,
The fan has a reinforcing plate that integrally includes the upper plate portion and the lower plate portion on one plane and is bent so that the fan portion and the middle plate portion are integrally formed on one plane. Manufactured by being joined to the fan body,
The fan manufacturing equipment
A conveyor that conveys the reinforcing plate and the fan body in one direction while supporting the fan body in a substantially horizontal posture;
The reinforcing plate has been conveyed in one direction while supporting the fan body in a substantially horizontal posture, and the reinforcing plate has been conveyed to the conveyor, and at least the middle plate portion of the fan body has been conveyed by the conveyor. A fan body feeding device that is placed so as to be superimposed on the lower plate portion of
A folding device that folds the upper plate portion of the reinforcing plate and superimposes it on the middle plate portion after the fan body is superimposed on the reinforcing plate, and
The fan body transporting device is disposed above the conveyor so as to have a height clearance that allows the reinforcing plate to advance by the conveyor, and In view, it moves in the same direction as the reinforcing plate, while in side view, it moves from above the conveyor so as to move along a path that intersects the moving path of the reinforcing plate at an acute angle. Fan making equipment.

  According to this round fan manufacturing apparatus, the reinforcing plate constituting the handle portion is bent by the conveyor, the round fan body conveying device and the folding device, and the round fan is automatically coupled by being coupled to the round fan body constituting the fan portion. Manufactured.

  In this round fan manufacturing apparatus, the round fan body conveying device causes the round fan body to be superimposed on the conveyor, and at least the middle plate portion of the round fan body is superposed on the lower plate portion of the reinforcing plate conveyed by the conveyor. It is thrown into.

  In order to realize this superposition, the fan body moving device moves the fan body in the same direction as the reinforcing plate in plan view, while from the upper side of the conveyor to the reinforcing plate moving path in plan view. It is transported so as to move along a path that intersects at an acute angle.

  Furthermore, in this fan manufacturing apparatus, the fan body conveying device is arranged above the conveyor so as to have a clearance of a height that allows the reinforcing plate to advance by the conveyor.

  Therefore, in this fan manufacturing apparatus, the reinforcing plate and the fan body have the same movement direction in the plan view, but are different from each other so that they gradually approach each other as they move forward in the side view. Then, the reinforcing plate and the fan body are combined with each other.

  That is, the reinforcing plate and the fan body are moved forward along two paths that intersect each other at an acute angle in the vertical plane, and then merged with each other at the intersection of these paths.

  Here, for convenience of explanation, one of the reinforcing plate and the fan body is called an object A, and the other is called an object B. Further, it is assumed that both the objects A and B are moving when the objects A and B merge with each other. The movement of the object A is observed in the moving direction of the object B.

  Under this assumption, the objects A and B are advanced along two paths intersecting each other at an acute angle, and the objects A are observed in the moving direction of the object B when trying to merge with each other. The moving speed of the object A in the case, that is, the apparent moving speed, is reduced as compared with the case where the objects A and B are moved forward along two paths intersecting at right angles to be combined with each other.

  When the moving speed is decreased only by the object A, the combined position of the object A and the object B becomes insensitive to variations in the moving speed and moving direction of the object B. Thus, when the sensitivity of the merged position with respect to variation decreases, the merged position is stabilized regardless of the presence or absence of variation and the magnitude of variation, and as a result, the assembly accuracy of the round fan as a finished product is improved.

  Therefore, according to this fan manufacturing apparatus, it is not indispensable to combine the reinforcing plate and the fan body after stopping one of the reinforcing plate and the fan body to improve the assembly accuracy of the fan. As a result, it is possible to move the reinforcing plate and the fan body together while moving them together, thereby improving the production efficiency of the fan.

  However, the fan manufacturing apparatus can be implemented in such a manner that the reinforcing plate and the fan body are combined with each other after one of the reinforcing plate and the fan body is stopped.

  In this section and each of the following sections, “inner plate portion” can be interpreted to mean a protruding portion when the fan body has a circular portion and a protruding portion protruding therefrom, for example. . In addition, when the fan body has only a circular portion, the “middle plate portion” is a part of the peripheral portion of the circular portion and is finally sandwiched between the upper plate portion and the lower plate portion of the reinforcing plate It can also be interpreted to mean a part. In short, the “middle plate portion” means a portion of the fan body that is finally sandwiched between the upper plate portion and the lower plate portion.

(2) In the reinforcing plate in the unfolded state, the conveyor has a direction in which a straight direction passing through both the upper plate portion and the lower plate portion coincides with a moving direction of the reinforcing plate, and the upper plate portion Transport the reinforcing plate in the direction where is
In the fan body conveying device, the direction of the center line of the fan set in the fan body so as to extend along the middle plate portion is an orientation that coincides with the moving direction of the reinforcing plate in a plan view. Transport the fan body in the direction where the plate part is at the top,
The bending device is configured to act on the upper plate portion by applying a force in a direction that opposes the forward movement of the upper plate portion of the reinforcing plate advanced in the unfolded state by the conveyor. The fan manufacturing apparatus according to item (1), further including a undulation mechanism that undulates in a direction approaching the upper surface of the middle plate portion.

  In this round fan manufacturing device, on the premise of the specific arrangement direction of the reinforcing plate and the round fan main body with respect to the conveyor, the forward movement of the upper plate portion of the reinforcing plate that is advanced by the folding device by the folding device The force of the direction which opposes is made to act on the upper board part. Thereby, the upper plate portion is raised and lowered in a direction approaching the upper surface of the middle plate portion.

  In the fan manufacturing apparatus, the undulation mechanism is implemented in a mode in which, for example, a force in a direction that opposes the forward movement of the upper plate portion is mechanically applied to the upper plate portion, or the upper plate using a pressure medium is used. It is possible to implement in a mode that acts on the upper part or in a mode that acts on the upper plate part magnetically.

(3) The undulation mechanism is
Including an arm portion rotatable around a rotation axis extending in a direction intersecting a moving direction of the reinforcing plate,
The arm portion is positioned in front of the upper plate portion in the standby state, and when the upper plate portion approaches and shifts to the engaged state, the arm portion is advanced by the conveyor. Is rotated in a direction to bend the upper plate portion with respect to the lower plate portion around the rotation axis by the force received from
The bending device is a pressing mechanism arranged to face the conveyor, and the reinforcing plate enters after the upper plate portion is bent with respect to the lower plate portion. The fan manufacturing apparatus according to item (2), including a device that presses the upper plate portion against the middle plate portion by a joint action with the forward movement of the reinforcing plate by the conveyor.

  In this fan manufacturing device, when the reinforcing plate approaches, the arm portion that engages with the upper plate portion of the reinforcing plate extends in front of the reinforcing plate and in a direction intersecting the moving direction of the reinforcing plate. It arrange | positions in the state which can be rotated around a rotating shaft line.

  When the arm portion is engaged with the upper plate portion, the arm plate is rotated in a direction to bend the upper plate portion with respect to the lower plate portion around the rotation axis by a force received from the upper plate portion. The arm portion converts the force received from the upper plate portion into a moment around the rotation axis by its rotation. The upper plate portion is bent with respect to the lower plate portion by the converted moment.

  Further, in the fan manufacturing apparatus, a pressing mechanism that presses the upper plate portion against the lower plate portion after the upper plate portion is bent by the lower plate portion by the arm portion is disposed to face the conveyor.

  This pressing mechanism presses the upper plate portion against the middle plate portion by a joint action with the forward movement of the reinforcing plate by the conveyor after the upper plate portion has entered the bent state with respect to the lower plate portion. As a result, the upper plate portion is brought into close contact with the middle plate portion.

(4) In the bending apparatus, further, when the reinforcing plate tries to enter the pressing mechanism in the bent state, the upper plate portion is sandwiched from both sides in the lateral direction, thereby the orientation of the upper plate portion. The fan manufacturing apparatus according to item (3), including a correction mechanism for correcting

  In this round fan manufacturing apparatus, when the reinforcing plate is going to enter the pressing mechanism in a bent state, a correction mechanism is provided that sandwiches the upper plate portion from both sides in the lateral direction. By this correction mechanism, the orientation of the upper plate portion is mechanically corrected. Further, the correction is performed before the upper plate portion is pressed against the middle plate portion by the pressing mechanism.

  Therefore, according to this fan manufacturing apparatus, even if the direction of the reinforcing plate may change due to the upper plate portion being bent by the arm portion with respect to the lower plate portion, the direction of the reinforcing plate is corrected. Mechanically modified by the mechanism.

  It is desirable to implement this correction mechanism in such a manner that the orientation of the reinforcing plate is mechanically corrected in a state where the fan body located upstream of the reinforcing plate on the conveyor is firmly held.

  If this aspect is adopted, even if the orientation of the reinforcing plate changes relative to the fan body due to the upper plate portion being bent with respect to the lower plate portion by the arm portion, The orientation is corrected relative to the fan body. As a result, the relative positional relationship between the reinforcing plate and the fan body is normalized.

(5) The fan manufacturing according to any one of (1) to (4), further including an application device that applies an adhesive to the upper surface of the reinforcing plate before the fan body is superimposed on the reinforcing plate. apparatus.

  In this round fan manufacturing apparatus, an adhesive is applied to the upper surface of the reinforcing plate before the round fan body is superimposed on the reinforcing plate. On the other hand, before the round fan body is superimposed on the reinforcing plate, the reinforcing plate is in an unfolded state. That is, the reinforcing plate is in a state where the upper plate portion and the lower plate portion can be accessed from above.

  After the adhesive is applied to the reinforcing plate, the lower surface of the fan body is overlaid on the upper surface of the lower plate portion of the reinforcing plate, and then the reinforcing plate is folded and the lower surface of the upper plate portion of the reinforcing plate. (The lower surface in the bent state) is superimposed on the upper surface of the fan body. As a result, the reinforcing plate is bonded to both sides of the fan body using an adhesive.

  Therefore, according to this fan manufacturing apparatus, the bonding operation for bonding the lower plate portion of the reinforcing plate to the lower surface of the fan body, and the upper plate portion of the reinforcing plate for bonding the upper plate portion to the upper surface of the fan body. The bonding operation can be realized by applying an adhesive from the same position.

  Therefore, according to this fan manufacturing apparatus, it is necessary to apply the adhesive to both sides of the fan body as a result, but the adhesive is applied only to one side of the fan body. Just set the position. As a result, the bonding operation is simplified compared to the case where the application position of the adhesive must be set on both sides of the fan body.

(6) The coating device includes a nozzle disposed at a fixed position above the conveyor, and the adhesive is directed from the nozzle toward the upper surface of the reinforcing plate while the reinforcing plate is advanced by the conveyor. The fan manufacturing apparatus according to item (5), which is discharged.

  According to the fan manufacturing apparatus, the adhesive is applied to the upper surface of the reinforcing plate by discharging the adhesive from a fixed point toward the upper surface of the reinforcing plate while the reinforcing plate is being advanced by the conveyor.

  The adhesive can be discharged continuously or intermittently on the same reinforcing plate. When the adhesive is continuously discharged, the adhesive is formed as a continuous line on the upper surface of the reinforcing plate in a side view. On the other hand, when the adhesive is intermittently discharged, the reinforcement is An adhesive is formed on the upper surface of the plate as a dot row in a side view. In any case, although the adhesive is discharged from a fixed point, the adhesive is distributed over a wide area on the upper surface of the reinforcing plate.

(7) The conveyor is an endless belt that comes into contact with the lower surfaces of the reinforcing plate and the fan body and supports the reinforcing plate and the fan body from below, and the conveyors are arranged in the length direction of the belt. Including those having an air opening of
The fan manufacturing apparatus further includes
The fan manufacturing apparatus according to any one of (1) to (6), further including a negative pressure generating device that generates negative pressure in the plurality of air openings and sucks the reinforcing plate and the fan body toward the belt. .

  According to the fan manufacturing apparatus, the connection between the reinforcing plate and the fan body and the belt is achieved not only by friction between the reinforcing plate and the fan body and the belt but also by suction by a negative pressure.

  Therefore, according to the fan manufacturing apparatus, the coupling force between the reinforcing plate and the fan body and the belt is improved as compared with the case where only the friction between the reinforcing plate and the fan body and the belt is achieved. The possibility that the reinforcing plate and the fan body will be unscheduled with respect to the belt is reduced.

  In addition, it is not essential to implement the technical features described in this section in combination with the technical features described in the above (1) to (6), and can be performed separately. .

(8) A fan manufacturing method for manufacturing a fan having a fan part and a handle part,
The handle portion has a structure in which an intermediate plate portion is sandwiched between an upper plate portion and a lower plate portion,
The fan has a reinforcing plate that integrally includes the upper plate portion and the lower plate portion on one plane and is bent so that the fan portion and the middle plate portion are integrally formed on one plane. Manufactured by being joined to the fan body,
The fan manufacturing method is
Reinforcing plate loading step of loading the reinforcing plates one by one into a conveyor for conveying in one direction while supporting the reinforcing plate and the fan body in a substantially horizontal posture;
A reinforcing plate conveying step of conveying the loaded reinforcing plate using the conveyor;
A fan body charging step of loading the fan body one by one into the fan body transport device for transporting the fan body in one direction while supporting the fan body in a substantially horizontal posture,
The inserted fan body is conveyed using the fan body conveying device, the fan body is transferred to the conveyor, and at least the middle plate portion of the fan body is moved to the lower plate portion of the reinforcing plate. A fan body conveyance process to be placed so as to be superposed,
A folding step in which the upper plate portion of the reinforcing plate is folded and superimposed on the middle plate portion after the fan body is superimposed on the reinforcing plate, and
The fan body conveying device is disposed above the conveyor so as to have a clearance of a height that allows the reinforcing plate to advance by the conveyor, between the conveyor and the conveyor.
In the fan body conveying step, the inserted fan body is moved in the same direction as the reinforcing plate in a plan view, while from the upper side of the conveyor in a side view, with respect to the moving path of the reinforcing plate. The fan manufacturing method of conveying using the said fan main body conveying apparatus so that it may move along the path | route which crosses acutely.

  When this fan manufacturing method is implemented, the reinforcing plate that forms the handle is bent and joined to the fan body that forms the fan to manufacture the fan.

  When this round fan manufacturing method is carried out, the round fan main body conveying device puts the round fan main body into the conveyor, and at least the middle plate portion of the round fan main body is superposed on the lower plate portion of the reinforcing plate.

  In order to realize the superposition, the fan body transport device moves the fan body in the same direction as the reinforcing plate in plan view, while the side plate moves the reinforcing plate from above the conveyor in side view. It is conveyed so as to move along a path that intersects the path at an acute angle.

  Therefore, when the fan manufacturing method is carried out, the reinforcing plate and the fan body have the same moving direction in plan view, but are different from each other so as to gradually approach each other in a side view. It is conveyed along two paths, and then the reinforcing plate and the fan body are combined with each other.

  That is, the reinforcing plate and the fan body are moved forward along two paths that intersect each other at an acute angle in the vertical plane, and then merged with each other at the intersection of these paths.

  Therefore, according to this fan manufacturing method, the speed difference between the two when the reinforcing plate and the fan body are combined with each other causes the reinforcing plate and the fan body to pass through two paths intersecting at right angles to each other. It is less than the case where they are moved forward along each other and united.

  Therefore, according to this fan manufacturing method, when the reinforcing plate and the fan body are combined with each other for the same reason as described above in the section (1), one of the reinforcing plate and the fan body can be stopped. As a result, it becomes easy to move the reinforcing plate and the fan body at a high speed, and it becomes easy to improve the production efficiency of the fan.

(9) In the reinforcing plate transporting step, the straight line direction that passes through both the upper plate portion and the lower plate portion in the reinforcing plate in the unfolded state is a direction that coincides with the moving direction of the reinforcing plate, and In a direction in which the upper plate portion is at the top, including a first conveying step of conveying the reinforcing plate,
In the fan body conveying step, the direction of the center line of the fan set on the fan body so as to extend along the middle plate portion is an orientation that coincides with the moving direction of the reinforcing plate in plan view, and Including a second conveying step of conveying the fan body in a direction in which the plate portion is at the head,
The bending step is performed by causing the upper plate portion to act on the upper plate portion with a force that opposes the forward movement of the upper plate portion of the reinforcing plate that is advanced in the unfolded state by the conveyor. The fan manufacturing method according to item (8), further including a undulation process that undulates in a direction approaching the upper surface of the middle plate portion.

  When this round fan manufacturing method is implemented, on the premise of the specific arrangement direction of the reinforcing plate and the round fan main body with respect to the conveyor, it opposes the forward movement of the upper plate portion of the reinforcing plate that is advanced in the deployed state by the conveyor. The force of the direction to do is made to act on the upper board part. Thereby, the upper plate portion is raised and lowered in a direction approaching the upper surface of the middle plate portion.

  In the fan manufacturing apparatus, the undulation process is performed in such a manner that, for example, a force in a direction that opposes the forward movement of the upper plate portion is mechanically applied to the upper plate portion, or the upper plate is formed using a pressure medium. It is possible to implement in a mode that acts on the upper part or in a mode that acts on the upper plate part magnetically.

(10) In the undulation process, in the front of the reinforcing plate advanced by the conveyor, the upper plate is obstructed by the advancement of the reinforcing plate by the conveyor by interfering with the advancement of the reinforcing plate. Bending the part with respect to the lower plate part,
The bending step further includes
After the upper plate portion is bent with respect to the lower plate portion, the method includes a step of pressing the upper plate portion against the middle plate portion by a joint action with the forward movement of the reinforcing plate by the conveyor. The fan manufacturing method described in 1.

  When this fan manufacturing method is implemented, the advance of the reinforcing plate is obstructed in front of the reinforcing plate advanced by the conveyor. Thereby, an upper board part is bend | folded with respect to a lower board part by the cooperative action with the advance movement of the reinforcement board by a conveyor.

  Furthermore, when this fan manufacturing method is implemented, the upper plate portion is pressed against the middle plate portion by the cooperative action with the forward movement of the reinforcing plate by the conveyor. Thereby, the upper plate portion is brought into close contact with the middle plate portion.

(11) A fan manufacturing apparatus for manufacturing a fan having a fan part and a handle part,
The handle portion has a structure in which an intermediate plate portion is sandwiched between an upper plate portion and a lower plate portion,
The fan has a reinforcing plate that integrally includes the upper plate portion and the lower plate portion on one plane and is bent so that the fan portion and the middle plate portion are integrally formed on one plane. Manufactured by being joined to the fan body,
The fan manufacturing equipment
A conveyor that conveys the reinforcing plate and the fan body in one direction while supporting the fan body in a substantially horizontal posture;
The reinforcing plate has been conveyed in one direction while supporting the fan body in a substantially horizontal posture, and the reinforcing plate has been conveyed to the conveyor, and at least the middle plate portion of the fan body has been conveyed by the conveyor. A fan body feeding device that is placed so as to be superimposed on the lower plate portion of
A fan manufacturing apparatus, comprising: a folding device that folds the upper plate portion of the reinforcing plate and superimposes the upper plate portion on the middle plate portion after the fan body is superimposed on the reinforcing plate.

  The fan manufacturing apparatus is implemented in combination with at least one of the plurality of technical features respectively described in the items (1) to (7), or the plurality of technical features described in the present specification. It can be implemented in combination with at least one of them.

(12) A fan manufacturing method for manufacturing a fan having a fan part and a handle part,
The handle portion has a structure in which an intermediate plate portion is sandwiched between an upper plate portion and a lower plate portion,
The fan has a reinforcing plate that integrally includes the upper plate portion and the lower plate portion on one plane and is bent so that the fan portion and the middle plate portion are integrally formed on one plane. Manufactured by being joined to the fan body,
The fan manufacturing method is
Reinforcing plate loading step of loading the reinforcing plates one by one into a conveyor for conveying in one direction while supporting the reinforcing plate and the fan body in a substantially horizontal posture;
A fan body charging step of loading the fan body one by one into the fan body transport device for transporting the fan body in one direction while supporting the fan body in a substantially horizontal posture,
The inserted fan body is conveyed using the fan body conveying device, the fan body is transferred to the conveyor, and at least the middle plate portion of the fan body is moved to the lower plate portion of the reinforcing plate. A fan body conveyance process to be placed so as to be superposed,
A fan manufacturing method comprising: a folding step of bending the upper plate portion of the reinforcing plate after the fan body is overlaid on the reinforcing plate, and overlapping the middle plate portion.

  This fan manufacturing method is carried out in combination with at least one of the plurality of technical features respectively described in the items (1) to (10), or the plurality of technical features described in the present specification. It can be implemented in combination with at least one of them.

  Hereinafter, one of more specific embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing a fan 10 as a finished product manufactured by a fan manufacturing method according to an embodiment of the present invention. The fan 10 is functionally divided into a fan part 12 that is shaken to generate wind and a handle part 14 that is gripped by the user to shake the fan part 12. The handle portion 14 has a structure in which the middle plate portion 20 is sandwiched between the upper plate portion 22 and the lower plate portion 24.

  As shown in FIGS. 2A and 2B, the fan is divided into a fan body 30 constituting the fan part 12 and a reinforcing plate 32 constituting the handle part 14 in terms of parts. That is, this round fan has a two-part configuration.

  The fan body 30 is formed so as to integrally have the fan 12 and the middle plate 20 on one plane. The fan portion 12 is generally circular, while the middle plate portion 20 is an elongated rectangle extending radially outward from a portion of the outer periphery of the fan portion 12.

  The reinforcing plate 32 is formed so as to integrally have the upper plate portion 22 and the lower plate portion 24 on one plane. The reinforcing plate 32 is symmetric with respect to the longitudinal center line extending in the longitudinal direction of the reinforcing plate 32 and is also symmetric with respect to the lateral center line that intersects the longitudinal center line at right angles at the midpoint of the longitudinal center line. It has a shape.

  The reinforcing plate 32 protrudes outward from the central portion at both end portions thereof. Each overhang portion is generally fan-shaped and has a shape having an outer periphery that exactly matches the outer periphery of the fan body 30 with the reinforcing plate 32 accurately superimposed on the fan body 30.

  In the present embodiment, the fan body 30 and the reinforcing plate 32 are both made of paper. However, the material constituting the fan body 30 and the reinforcing plate 32 can be replaced with a thin material other than paper, for example, a plastic sheet. It is.

  FIG. 3 is a process diagram showing a fan manufacturing method according to the present embodiment.

  In the fan manufacturing method, the reinforcing plates 32 are loaded one by one into the conveyor 40 (see FIGS. 5 and 6) using the reinforcing plate loading device 42 (see FIGS. 5 and 6) in the unfolded state. It includes a charging process S1 and an adhesive application process S2 in which an adhesive is applied to the upper surface of the charged reinforcing plate 32 using an adhesive application device 44 (see FIGS. 5 and 6).

  The conveyor 40 is used to convey the reinforcing plate 32 and the fan body 30 in one direction while supporting them in a substantially horizontal posture. The configurations and operations of the conveyor 40, the reinforcing plate feeding device 42, and the adhesive application device 44 will be described in detail later.

  The fan manufacturing method further includes a reinforcing plate conveying step S <b> 3 in which the reinforcing plate 32 put into the conveyor 40 is conveyed using the conveyor 40.

  This round fan manufacturing method further includes a round fan body feeding step S4 in which the round fan bodies 30 are put into the round fan body transporting device 48 using the round fan body feeding device 46 (see FIGS. 5 and 6) one by one. . This fan body charging step S4 is executed in parallel with the reinforcing plate charging step S1. The configuration and operation of the fan body charging device 46 will be described in detail later.

  The fan body conveying device 48 is configured to convey the fan body 30 in one direction (see FIGS. 5 and 6) while supporting the fan body 30 in a substantially horizontal posture. The fan body conveying device 48 is arranged above the conveyor 40 so as to have a clearance of a height that allows the reinforcing plate 32 to advance by the conveyor 40. The configuration and operation of the fan body transport device 48 will be described in detail later.

  The fan manufacturing method further includes a fan body transporting step S5 for transporting the fan body 30 introduced by the execution of the fan body charging process S4 using the fan body transporting device 48. This fan main body conveyance process S5 is performed in parallel with the reinforcement board conveyance process S3.

  When this round fan main body transporting step S5 is performed, the round fan main body 30 moves in the same direction as the reinforcing plate 32 in a plan view, while in the side view, the moving path of the reinforcing plate 32 from above the conveyor 40. Is transported using the fan body transport device 48 so as to move along a path that intersects at an acute angle. Furthermore, when this round fan main body conveyance process S5 is performed, the round fan main body 30 is superimposed on the conveyor 40, and at least the middle plate portion 20 of the round fan main body 30 is superimposed on the lower plate portion 24 of the reinforcing plate 32. It is thrown.

  When this round fan main body conveyance process step S5 is executed, at least the middle plate portion 20 of the round fan main body 30 is superimposed on the lower plate portion 24 of the reinforcing plate 32 as shown in FIG. A combined product is produced.

  As shown in FIG. 3, this fan manufacturing method further uses the folding device 50 (see FIGS. 5 and 6) after the fan body 30 is overlaid on the reinforcing plate 32. A bending step S <b> 6 is included in which the upper plate portion 22 is bent and superimposed on the middle plate portion 20. The configuration and operation of the bending apparatus 50 will be described in detail later. When this bending step S6 is executed, the fan is completed. FIG. 4B shows the completed fan in a plan view.

  FIG. 5 shows a fan manufacturing apparatus 60 according to the present embodiment in a plan view, and FIG. 6 shows a side view. 5 and 6, the right side is the upstream side in the manufacturing process, the left side is the downstream side, and the manufacturing process proceeds as the reinforcing plate 32 and the fan body 30 move from the right side to the left side.

  As shown in FIGS. 5 and 6, the fan manufacturing apparatus 60 includes a conveyor 40, a reinforcing plate charging device 42, an adhesive application device 44, a fan body charging device 46, a fan body conveying device 48, and a folding device. The bending device 50 and the posture stabilization device 52 are configured to be included.

  As will be described in detail later, the conveyor 40 includes a hollow frame 90 that is straight and horizontally extending in a generally rectangular cross section, as shown in FIGS. 5 and 6. As shown in FIG. 5, a plurality of belts 96 are arranged on the frame 90 so as to extend in the length direction of the frame 90.

  As will be described in detail later, the bending device 50 is hooked by a rotating claw 294 (see FIG. 20) so that the upper plate portion 22 that is the leading end of the reinforcing plate 32 faces the lower plate portion 24 that is the trailing end. It is designed to have a bending function of bending and a pressing function of pressing the bent upper plate portion 22 against the fan body 30 to bring it into close contact with the middle plate portion 20.

  As will be described in detail later, the posture stabilization device 52 functions to stabilize the postures of the fan body 30 and the reinforcing plate 32 on the belt 96 of the conveyor 40, and the posture of the fan body 30 in the fan body transfer device 48. It has a function to stabilize. In order to perform these functions, the posture stabilizing device 52 presses the fan body 30 and the reinforcing plate 32 against the belt 96 to increase the frictional force therebetween, and the fan body 30 is moved to the belt 164 of the fan body conveying device 48. It is designed to increase the friction force between the two.

  As shown in FIGS. 5 and 6, the reinforcing plate charging device 42, the adhesive application device 44, the fan body charging device 46, the fan body transporting device 48, the folding device 50, and the posture stabilization device 52, Are attached to the frame 90.

  As shown in the block diagram of FIG. 7, the fan manufacturing apparatus 60 further includes an operation panel 70 operated by an operator, a plurality of limit switches (abbreviated as “LS” in FIG. 7) 72, A plurality of motors 74, a negative pressure generation device 76, an overrun prevention device 78, and a control device 80 are included.

  The plurality of motors 74, the negative pressure generator 76, and the overrun prevention device 78 are all electrically connected to the power source 82. The negative pressure generator 76, the overrun prevention device 78, and the control device 80 are all attached to the frame 90.

  The operation panel 70 has a plurality of switches operated by an operator. These switches are operated, for example, a power switch 84 that is operated to turn on the power supply 82, a start switch 86 that is operated to start the fan manufacturing apparatus 60, and a fan manufacturing apparatus 60 that is stopped. And a stop switch 88.

  The plurality of limit switches 72 are provided as sensors that detect that the fan body 30 and the reinforcing plate 32 of the conveyor 40 have reached specific positions. The plurality of motors 74 are provided to drive the conveyor 40, the reinforcing plate feeding device 42, the fan body feeding device 46, the fan body feeding device 48, the folding device 50, and the posture stabilizing device 52.

  The negative pressure generating device 76 includes a negative pressure for adsorbing the reinforcing plate 32 and the fan 10 to the belt 96 of the conveyor 40, and a negative pressure for adsorbing the fan body 30 to the belt 164 of the fan body conveying device 48. It is provided to generate at least the former in the corresponding one of the closed space in the conveyor 40 and the closed space in the fan body transport device 48.

  Although not shown, the negative pressure generating device 76 includes a pump that sucks air from at least the former of the closed space in the conveyor 40 and the closed space in the fan body conveying device 48, and a motor that drives the pump. It is configured.

  In the present embodiment, the negative pressure generator 76 is configured to include two pumps (for example, ring blowers) and two motors that respectively drive the pumps (not shown). One of these two pumps is connected to a closed space in the fan body conveying device 48 via a duct and a flexible hose to suck the fan body 30, and the other sucks the reinforcing plate 32 and the fan 10. In order to do this, it is connected to a closed space in the conveyor 40 via a duct and a flexible hose.

  As partially shown in FIG. 5, a plurality of air openings 97 are formed in the belt 96 along the length direction of the belt 96 at equal intervals. When the reinforcing plate 32 and the fan 10 are placed on the belt 96 so as to block the corresponding air opening 97, negative pressure is applied to the reinforcing plate 32 and the fan 10 through the air opening 97. As a result, the reinforcing plate 32 and the fan body 30 are attracted to the belt 96.

  When it is necessary to adsorb the fan body 30 to the belt 164 of the fan body conveying device 48, a plurality of air openings 97 are formed in the belt 164 as well as the belt 96.

  The overrun prevention device 78 is an example of a synchronization device that synchronizes the operation of the fan body 30 and the operation of the reinforcing plate 32 with each other.

  Specifically, the overrun prevention device 78 controls the timing at which the fan body conveying device 48 puts the fan body 30 into the conveyor 40 by selectively restricting the forward movement of the fan body 30. As a result, it is further ensured that the fan body 30 is put into the conveyor 40 from the fan body conveying device 48 at regular timing.

  Based on the operation state of the operation panel 70 and the output signal of the limit switch 72, the control device 80 starts / stops and rotates the motors 74, the timing at which the adhesive application device 44 discharges the liquid adhesive, the negative It is provided to control the start / stop of the pressure generator 76 and the start / stop of the overrun prevention device 78. The control device 80 is designed to execute a predetermined operation using a sequencer or a computer.

  As shown in FIG. 6, a drive pulley 92 and a driven pulley 94 that are arranged so that their axial positions are different from each other in a side view are rotatably attached to the frame 90 of the conveyor 40.

  As shown in FIG. 6, three endless belts 96 extending in the front-rear direction are wound around the drive pulley 92 and the driven pulley 94 in parallel with each other. As a result, each belt 96 is circulated in one direction in the frame 90 by driving of the corresponding motor 74.

  As shown in FIG. 6, the frame 90 is supported by a plurality of casters 98 so as to be movable in any direction on the floor on which the fan manufacturing apparatus 60 is to be installed.

  As shown in FIG. 6, any belt 96 extends linearly from the upstream end position (right end position in the figure) to the downstream end position (left end position in the figure) of the frame 90, and as a result, any belt 96. Both have an upper straight portion and a lower straight portion that are both substantially horizontal and parallel to each other.

  Each belt 96 supports the lower surface of the fan body 30 and the reinforcing plate 32 in a horizontal posture on the upper surface of the upper straight portion, and the fan body 30 and the reinforcing plate 32 in one direction. Transport.

  As shown in FIG. 6, the reinforcing plate loading device 42 includes a stacker 100 that houses a plurality of reinforcing plates 32 each in a horizontal posture, and a lowermost reinforcing plate 32 in the stacker 100. The separator 102 is separated from the reinforcing plate 32 using friction. The separator 102 feeds the reinforcing plates 32 taken out from the stacker 100 one by one to the upstream end position of the belt 96.

  FIG. 8 shows the stacker 100 in a plan view. In the stacker 100, a reinforcing plate 32 in a horizontal posture is sandwiched between a plurality of lateral guides 104 that respectively support a plurality of lateral sides that are separated from each other in the lateral direction, and the reinforcing plate 32 is sandwiched in the front-rear direction. A front guide 106 and a rear guide 108 are supported. Both the distance between the lateral guides 104 facing each other and the distance between the front guide 106 and the rear guide 108 can be adjusted within a certain range by the slide fitting structure of the pin and the elongated hole.

  FIG. 9 shows the front guide 106 and the rear guide 108 in a side view. A slope 110 is formed at the lower end of the rear guide 108 so that the distance from the front guide 106 decreases as it goes downward. The inclined surface 110 contributes to ensuring the operation of removing the reinforcing plates 32 from the stacker 100 one by one.

  FIG. 10 shows the separator 102 in a plan view. The separator 102 has a drive pulley 120 and a driven pulley 122 that are arranged so that their axial positions are different from each other in a side view. The drive pulley 120 is driven by a motor 74. Three endless belts 124 extending in the front-rear direction are wound around the drive pulley 120 and the driven pulley 122 in parallel with each other.

  As a result, both belts 124 have upper and lower straight portions that are both substantially horizontal and parallel to each other. Each belt 124 conveys the reinforcing plate 32 in one direction while supporting the lower surface of the reinforcing plate 32 in a horizontal posture on the upper surface of the upper straight portion.

  5 and 6 show the adhesive application device 44 in a plan view and a side view, respectively. The adhesive application device 44 is classified as a well-known solenoid-driven discharge gun. Briefly, the adhesive application device 44 includes a solenoid, a valve controlled by the electromagnetic force of the solenoid, a nozzle connected to the discharge side of the valve, and an adhesive discharged or jetted or dropped. Is configured to include.

  As shown in FIGS. 5 and 6, the adhesive application device 44 is disposed on the conveyor 40 at a position between the reinforcing plate charging device 42 and the fan body charging device 46. As shown in a plan view in FIG. 11, the adhesive application device 44 synchronizes the droplet-like adhesive with the movement of the reinforcing plate 32 from three nozzles arranged in the horizontal direction with their positions fixed. And intermittent discharge.

  As a result, the adhesive applicator 44 is in the form of droplets along the three straight lines parallel to each other on the upper surface of the reinforcing plate 32 in the unfolded state due to the cooperative action with the forward movement of the reinforcing plate 32 by the conveyor 40. This adhesive can be applied discretely.

  As shown in FIG. 6, the fan body inserting device 46 includes a stacker 130 that houses the fan bodies 30 among a plurality of sheets each in a horizontal posture, and the lowermost fan body 30 in the stacker 130. A separator 132 that separates from the fan body 30 using friction is provided. The separator 132 feeds the fan bodies 30 taken out from the stacker 130 one by one to the upstream end position of the fan body conveying device 48.

  FIG. 12 shows the stacker 130 in a plan view. The stacker 130 sandwiches the fan body 30 in a horizontal posture with a plurality of lateral guides 134 that respectively support a plurality of lateral sides that are separated from each other in the lateral direction, and the fan body 30 is sandwiched in the front-rear direction. It has a front guide 136 and a rear guide 138 to support. Both the distance between the lateral guides 134 facing each other and the distance between the front guide 136 and the rear guide 138 can be adjusted within a certain range by the slide fitting structure of the pin and the long hole.

  As shown in FIG. 12, the front guide 136 has a groove 140 of a size that allows the middle plate portion 20 of the fan body 30 to enter completely in plan view. The front guide 136 is designed to contact and support the front portion of the fan body 30 on the rear surface 142 thereof.

  FIG. 13 shows the front guide 136 and the rear guide 138 in a side view. A slope 144 is formed at the lower end of the rear guide 138 so that the distance from the front guide 136 decreases as it goes downward. This inclined surface 144 contributes to ensuring the operation of taking out the fan body 30 from the stacker 130 one by one.

  As shown in FIG. 12, the plurality of lateral guides 134 include two pairs of lateral guides 134 that face each other with the fan body 30 interposed therebetween. In FIG. 14, only one of the two pairs of lateral guides 134 is typically shown in a side view.

  FIG. 15 shows the separator 132 in a plan view. The separator 132 includes a drive pulley 150 and a driven pulley 152 that are arranged so that their axial positions are different from each other in a side view. The drive pulley 150 is driven by a motor 74. Seven endless belts 154 extending in the front-rear direction are wound around the drive pulley 150 and the driven pulley 152 in parallel with each other.

  As a result, each belt 154 has an upper straight portion and a lower straight portion that are both substantially horizontal and parallel to each other. Each belt 154 conveys the fan body 30 in one direction while supporting the lower surface of the fan body 30 in a horizontal posture on the upper surface of each upper straight portion.

  As shown in FIGS. 5 and 6, a fan body conveying device 48 is installed immediately downstream of the fan body charging device 46. FIG. 16 shows the fan body conveying device 48 in a plan view, while FIG. 17 shows a side view.

  As shown in FIG. 17, the fan body transport device 48 includes a drive pulley 160 and a driven pulley 162 that are arranged so that their axial positions are different from each other in a side view. The driving pulley 160 is driven by a motor 74. As shown in FIG. 16, three endless belts 164 extending in the front-rear direction are wound around the drive pulley 160 and the driven pulley 162 in parallel with each other.

  As a result, each belt 164 has an upper straight portion and a lower straight portion. Each belt 164 conveys the fan body 30 in one direction while supporting the lower surface of the fan body 30 in a horizontal posture on the upper surface of each upper straight portion. The round fan main body transporting device 48 feeds the round fan main bodies 30 loaded from the round fan main body loading device 46 one by one to the substantially central position of the conveyor 40.

  As shown in FIG. 17, the fan body transport device 48 includes a portion of the fan body transport device 48 that faces the upper surface of the conveyor 40, that is, the lower surface of the lower straight portion of each belt 164, and the upper surface of the conveyor 40. The clearance 90 is attached to the frame 90 so as to form a clearance CL that does not hinder the advance of the reinforcing plate 32 by the conveyor 40. The height of the clearance CL is set so that the adhesive adhering to the upper surface of the reinforcing plate 32 does not adhere to the center of the three belts 164.

  In FIG. 17, an overrun prevention device 78 is further shown in a side view. The overrun prevention device 78 includes an electromagnetic actuator 172 that moves the plunger 170 in and out, and a stopper 174 attached to the plunger 170.

  The plunger 170 is always located at the retracted position shown in FIG. At this time, the stopper 174 is positioned at the non-operating position, and permits the fan body 30 to be advanced beyond the stopper 174 by the belt 164.

  On the other hand, when the electromagnetic actuator 172 is excited, the plunger 170 is retracted from the electromagnetic actuator 172, and accordingly, the stopper 174 is displaced from the non-operating position to the operating position.

  The stopper 174 abuts against the fan body 30 at its operating position, thereby preventing the fan body 30 from being advanced beyond the stopper 174 by the belt 164. As a result, the timing at which the fan body 30 is put into the conveyor 40 from the fan body conveying device 48 is controlled.

  In the fan manufacturing apparatus 60, the limit switch 72 detects that the reinforcing plate 32 to be combined with the fan body 30 to be put into the conveyor 40 by the fan body conveying apparatus 48 has reached a predetermined position by the conveyor 40. Then, the control device 80 drives the motor 74 of the fan body conveying device 48 for a predetermined time.

  As a result, every time the reinforcing plate 32 reaches a predetermined position, the belt 164 of the fan body transport device 48 is intermittently driven, and the fan body 30 is united one by one from the fan body transport device 48. While being synchronized with the power reinforcing plate 32, it is put into the conveyor 40.

  When the fan body 30 is put into the conveyor 40 from the fan body conveying device 48, the fan body 30 is combined with the reinforcing plate 32 conveyed by the belt 96 of the conveyor 40.

  Specifically, as shown in FIG. 4, the middle plate portion 20 of the fan body 30 overlaps the straight portion of the lower plate portion 24 of the reinforcing plate 32, while the middle plate portion of the fan body 30. The fan body 30 and the reinforcing plate 32 are combined with each other so that the fan-shaped region adjacent to 20 overlaps the overhanging portion which is the end portion of the lower plate portion 24.

  In the present embodiment, the reinforcing plate 32 and the fan body 30 are advanced along two paths intersecting each other at an acute angle in a side view, and are combined with each other. Therefore, when the reinforcing plate 32 is observed in the moving direction of the fan body 30, the moving speed of the reinforcing plate 32, that is, the apparent moving speed, is such that the reinforcing plate 32 and the fan body 30 cross two paths perpendicular to each other. It is less than the case where it is made to advance along each other and unite with each other.

  When the moving speed is reduced only by the reinforcing plate 32, the combined position of the reinforcing plate 32 and the fan body 30 becomes insensitive to variations in moving speed and moving direction of the reinforcing plate 32. Thus, when the sensitivity of the merged position with respect to variation decreases, the merged position is stabilized regardless of the presence or absence of variation and the magnitude of variation, and as a result, the assembly accuracy of the fan 10 as a finished product is improved.

  Therefore, in the fan manufacturing apparatus 60, the reinforcing plate 32 and the fan body 30 are both combined with each other while being moved.

  As shown in FIG. 5 and FIG. 6, the posture stabilizing device 52 is one belt 96 located at the center in the left-right direction among the three belts 96 of the conveyor 40 (hereinafter referred to as “center belt 96”). One belt driving device 180 extending along the two belts 96, and two belt driving devices 184 extending along two belts 96, 96 located on both sides in the left-right direction of the three belts 96. Yes.

  FIG. 18A is an enlarged side view of the belt driving device 180. The belt driving device 180 is provided to feed the fan body 30 in synchronization with the belt 164 while pressing the fan body 30 supported by the belt 164 of the fan body conveying device 48 against the belt 164.

  As shown in FIG. 18A, the belt driving device 180 includes one driving pulley 190 and two driven pulleys 192 and 194 that are arranged so that their axial positions are different from each other in a side view. Yes. One endless belt 196 extending in the front-rear direction is wound around the driving pulley 190 and the driven pulleys 192 and 194. The driving pulley 190 is driven by a corresponding one of the plurality of motors 74.

  As a result, the belt 196 has an upper straight portion 200 and a lower straight portion 202 that are substantially horizontal and parallel to each other. The lower straight portion 202 is bent at a substantially central position in the length direction thereof, and as a result, a front straight portion 204 and a rear straight portion 206 are formed.

  The belt 196 conveys the fan body 30 in one direction while pressing the upper surface of the fan body 30 on the lower surface of the rear straight portion 206 thereof. The belt driving device 180 collaborates with the fan body conveying device 48 to feed the fan bodies 30 one by one onto the conveyor 40.

  As shown in FIG. 18A, the belt driving device 180 includes a support 210 that extends in the length direction of the belt 196. The support 210 is supported by a shaft 212 coaxially and integrally rotatable with the drive pulley 190 and a shaft 214 coaxially and relatively rotatable with the driven pulley 192 via a bearing (not shown). The shafts 212 and 214 are attached to the frame 90 so as to be rotatable at fixed positions via bearings (not shown).

  The support 210 has at least one free roller 220 that can rotate about a rotation axis parallel to the drive pulley 190 and the driven pulley 192 and elastically swing about an oscillation axis that is eccentric to the rotation axis. It is supported movably.

  In order to realize the elastic support, a swing arm 222 is disposed between the free roller 220 and the support 210 or a stationary member instead thereof, and further, the free roller 220 or a member that swings integrally therewith (swing). (Not shown) (not shown) (coil spring, torsion spring, leaf spring, etc.) is disposed between the support 210 and the stationary member instead.

  The free roller 220 is rotated so as to follow the movement in the length direction of the belt 196 while contacting the belt 196. Further, the free roller 220 is swung so as to follow the displacement of the belt 196 in the thickness direction.

  As shown in FIG. 18A, the belt driving device 180 has a height between the lower surface of the front straight portion 204 and the upper surface of the conveyor 40 so as not to obstruct the advancement of the reinforcing plate 32 by the conveyor 40. It is attached to the frame 90 so that the clearance CL is formed. The height of the clearance CL is set so that the adhesive adhering to the upper surface of the reinforcing plate 32 does not adhere to the belt 96 of the belt driving device 180.

  In FIG. 18B, the belt driving device 184 is enlarged and shown in a side view. The belt driving device 184 feeds the fan body 30 and the reinforcing plate 32 in synchronization with the belt 96 while pressing the fan body 30 and the reinforcing plate 32 supported by the belt 96 of the conveyor 40 against the belt 96. Is provided. Since the structure of the belt driving device 184 is basically the same as that of the belt driving device 180, it will be briefly described.

  As shown in FIG. 18B, the belt driving device 184 has one driving pulley 230 and two driven pulleys 232 and 234 that are arranged such that their axial positions are different from each other in a side view. Yes. The driven pulley 232 is supported on the shaft 212 so as to be relatively rotatable. Like the driven pulley 192 of the belt driving device 180, the driven pulley 234 is supported on the shaft 214 so as to be relatively rotatable.

  As shown in FIG. 18B, one endless belt 236 extending in the front-rear direction is wound around the drive pulley 230 and the driven pulleys 232 and 234. The drive pulley 230 is driven by a corresponding one of the plurality of motors 74.

  As a result, the belt 236 has an upper straight portion and a lower straight portion that are substantially horizontal and parallel to each other. The belt 236 conveys the fan body 30 and the reinforcing plate 32 in one direction while pressing the upper surfaces of the fan body 30 and the reinforcing plate 32 on the lower surface of the lower linear portion thereof.

  As shown in FIG. 18B, the belt driving device 184 includes a support 240 that extends in the length direction of the belt 236. The support 240 is supported by shafts 212 and 214 and a shaft 242 that can rotate integrally with the drive pulley 230 via a bearing (not shown). The shaft 242 is rotatably attached to the frame 90 at a fixed position via a bearing (not shown).

  In the support 240, at least one free roller 250 is rotatable around a rotation axis parallel to the drive pulley 230 and the driven pulleys 232 and 234, and is elastic around a swing axis that is eccentric with respect to the rotation axis. Is swingably supported. The elastic support is realized by the swing arm 252 and a spring (not shown) as in the belt driving device 180.

  The free roller 250 is rotated so as to follow the movement in the length direction of the belt 236 while contacting the belt 236. Further, the free roller 250 is swung so as to follow the displacement of the belt 236 in the thickness direction. As a result, although the relative position between the driving pulley 230 and the driven pulleys 232 and 234 and the belt 96 of the conveyor 40 is unchanged, the belt 236 moves the fan body 30 and the reinforcing plate 32 to the belt 96 of the conveyor 40. Pressing is ensured.

  19 is a plan view of a folding mechanism 260 that performs the above-described folding function of the folding device 50, and FIG. 20 is a side view thereof. FIG. 21A shows a side view of the pressing mechanism 262 that performs the above-described pressing function of the bending apparatus 50, and FIG. 21B corrects the direction of the reinforcing plate 32 in the bending apparatus 50. A straightening mechanism 264 is shown in plan view.

  As shown in FIG. 5, the pressing mechanism 262 is disposed at the downstream end position in the fan manufacturing apparatus 60. As shown in FIG. 20, the bending mechanism 260 is disposed between the posture stabilization device 52 and the pressing mechanism 262.

  As shown in FIGS. 19 and 20, the bending mechanism 260 is configured to press the reinforcing plate 32 discharged from the belt driving device 180 of the posture stabilizing device 52 against the central belt 96 of the conveyor 40 while pressing the reinforcing mechanism 262. When the front end of the reinforcing plate 32 is bent, an end pressing mechanism 270 that presses the rear end of the reinforcing plate 32 is provided.

  The end pressing mechanism 270 has a pair of supports 272 and 272 fixedly attached to the frame 90 via members (not shown). The pair of supports 272 and 272 extend along the vertical plane while facing each other in the horizontal direction. Furthermore, these supports 272 and 272 are arranged so as to extend in parallel with the central belt 96 in plan view and to face each other with the central belt 96 therebetween.

  As shown in FIG. 19 and FIG. 20, a driven pulley 276 is rotatably attached to each support 272 at the front end thereof. A belt 280 is wound around the driven pulley 276 and a driving pulley 278 that is coaxially and integrally mounted on a shaft 212 that is coaxially and integrally rotatable with the driving pulley 190 of the roller driving device 180. ing. The drive pulley 278 is driven by a corresponding one of the plurality of motors 74.

  As a result, each belt 280 has an upper straight portion and a lower straight portion that are substantially horizontal and parallel to each other. Each belt 280 is designed to convey the reinforcing plate 32 in one direction while pressing the upper surface of the reinforcing plate 32 on the lower surface of the lower linear portion thereof.

  However, the pair of belts 280 and 280 are opposed to each other across the central belt 96 in plan view. On the other hand, the reinforcing plate 32 has a wider width at the center portion at the front end portion and the rear end portion. The pair of belts 280 and 280 are arranged so as not to contact the central portion of the reinforcing plate 32, so that the folding function of the folding mechanism 260 is not hindered.

  Further, each belt 280 has a narrower width than the central belt 96, so that each belt 280 has the adhesive shown in FIG. 11 out of the front end portion and the rear end portion of the reinforcing plate 32. It comes in contact with a region that deviates laterally from the application region.

  As shown in FIG. 20, a tension pulley 284 is also rotatably attached to each support 272, and appropriate tension is applied to the corresponding belt 280.

  As shown in FIG. 20, each support 272 is further provided with at least one free roller 286 along the lower straight portion of the corresponding belt 280. Each free roller 286 is attached to a corresponding support 272 so that it can rotate and elastically move up and down. As a result, the ability of each belt 280 to follow the positional changes of the fan body 30 and the reinforcing plate 32 on the conveyor 40 is improved.

  As shown in FIGS. 19 and 20, the bending mechanism 260 further includes an arm portion 290. The arm portion 290 is attached to the frame 90 so as to be rotatable around a rotation axis AP extending in a direction perpendicular to the moving direction of the reinforcing plate 32 as shown in a side view in FIG. Yes.

  As shown in FIG. 20, the arm portion 290 is coaxially and rotatably attached to a shaft extending coaxially with the rotation axis AP at its proximal end portion 292, while at its free end portion, A rotating claw 294 for hooking the front end portion of the reinforcing plate 32 is provided.

  In a standby state where the arm portion 290 is not engaged with the reinforcing plate 32, the arm portion 290 is positioned at the lowest end position LM indicated by a two-dot chain line in FIG. When the front end portion of the reinforcing plate 32 is engaged with the arm portion 290, the driving force of the conveyor 40 is transmitted to the arm portion 290 via the reinforcing plate 32.

  As a result, a moment in the direction of moving away from the reinforcing plate 32 is generated around the rotation axis AP in the arm portion 290. The axial force acting on the arm portion 290 from the reinforcing plate 32 is converted into a moment around the rotation axis AP by the arm portion 290.

  When the arm portion 290 is rotated in the clockwise direction in FIG. 20 and the front end portion of the reinforcing plate 32 reaches and reaches the rotation claw 294, the rotation angle from the initial position of the arm portion 290 increases thereafter. Accordingly, the front end portion of the reinforcing plate 32 is lifted and raised by the rotating claw 294.

  On the other hand, when the reinforcing plate 32 is die-cut from the blank material, the boundary line between the portion that will eventually become the upper plate portion 22 and the portion that will eventually become the lower plate portion 24 is pressed into the reinforcing plate. 32. As a result, the stress concentration degree of the reinforcing plate 32 is locally increased at the boundary line formed by embossing.

  Therefore, when the front end portion of the reinforcing plate 32 is lifted in a state where the rear end portion of the reinforcing plate 32 is pressed against the central belt 96 by the end pressing mechanism 270, the boundary line formed by the stamping is naturally formed. The bend line is used to bend the reinforcing plate 32. As a result, in the reinforcing plate 32, the upper plate portion 22 is bent with respect to the lower plate portion 24.

  When the upper plate portion 22 is bent with respect to the lower plate portion 24 by a certain angle or more, the arm portion 290 starts to descend despite the advancement of the reinforcing plate 32. In FIG. 20, the arm portion 290 at the uppermost end position UM is indicated by a two-dot chain line.

  FIG. 21A shows the pressing mechanism 262 in a side view. The pressing mechanism 262 is common to the belt driving device 184 shown in FIG. 18B with respect to the basic structure, but is different in the arrangement position. Specifically, as shown in FIG. 5, the pressing mechanism 262 is disposed so as to extend while facing the central belt 96.

  After the upper plate portion 22 is bent with respect to the lower plate portion 24 by the bending mechanism 290, the reinforcing plate 32 is caused to enter between the pressing mechanism 262 and the conveyor 40 with the bent portion as the head. By this approach, the upper plate portion 22 is bent at an acute angle with respect to the lower plate portion 24, and the upper plate portion 22 is brought into close contact with the middle plate portion 20 in due course.

  Since the structure of the pressing mechanism 262 is basically the same as that of the belt driving device 184, it will be briefly described.

  As shown in FIG. 21A, the pressing mechanism 262 includes a driving pulley 300 and a driven pulley 302 that are arranged so that their axial positions are different from each other in a side view. The driven pulley 302 is supported on a shaft 242 coaxial with the driving pulley 190 of the belt driving device 184 so as to be relatively rotatable.

  The driving pulley 300 is supported coaxially and integrally on a shaft 304 parallel to the shaft 242 so as to be rotatable. The shaft 304 is attached to the frame 90 so as to be rotatable at a fixed position via a bearing (not shown). The drive pulley 300 is driven by a corresponding one of the plurality of motors 74.

  As shown in FIG. 21A, one endless belt 306 extending in the front-rear direction is wound around the driving pulley 300 and the driven pulley 302.

  As a result, the belt 306 has an upper straight portion and a lower straight portion that are substantially horizontal and parallel to each other. The belt 306 is designed to convey the fan body 30 and the reinforcing plate 32 in one direction while pressing the upper surfaces of the fan body 30 and the reinforcing plate 32 on the lower surface of the lower linear portion thereof.

  As shown in FIG. 21A, the pressing mechanism 262 includes a support 310 that extends in the length direction of the belt 306. The support 310 is supported by shafts 242 and 304 via a bearing (not shown).

  The support 310 has at least one free roller 312 that is rotatable about a rotation axis that is parallel to the drive pulley 300 and the driven pulley 302 and that elastically swings about a swing axis that is eccentric to the rotation axis. It is supported movably. The elastic support is realized by a swing arm 314 and a spring (not shown) as in the belt driving device 184.

  The free roller 312 is rotated so as to follow the movement in the length direction of the belt 306 while contacting the belt 306. Further, the free roller 312 is swung so as to follow the displacement of the belt 306 in the thickness direction. As a result, the belt 306 presses the fan body 30 and the reinforcing plate 32 against the belt 96 of the conveyor 40 even though the relative position between the driving pulley 300 and the driven pulley 302 and the belt 96 of the conveyor 40 is unchanged. Is ensured.

  20 shows the correction mechanism 264 in a side view, and FIG. 21 (b) shows it in a plan view. The straightening mechanism 264 has a pair of edge guides 320 and 320 fixed to the support 310. The edge guides 320 and 320 allow the upper plate portion 22 to contact a portion of the belt 306 that contacts the rear portion of the driven pulley 302 after being bent by the arm portion 290.

  The edge guides 320 and 320 have a pair of regulating surfaces 322 and 322 that face each other in parallel in the lateral direction. The distance between the restricting surfaces 322 and 322 has a dimension slightly larger than the width dimension of the central portion of the upper plate portion 22. Both of the restricting surfaces 322 and 322 extend vertically.

  The edge guides 320 and 320 further have a pair of introduction surfaces 324 and 324 that are opposed to each other in the lateral direction so that the distance is wider than the distance between the regulation surfaces 322 and 322 as the distance from the driven pulley 302 increases. . Even if the direction of the reinforcing plate 32 is slightly deviated while the introduction surfaces 324 and 324 are bent by the arm portion 290, the upper plate portion 22 approaches the driven pulley 302 and contacts the belt 306 after the bending. It works to ensure that.

  Therefore, when the reinforcing plate 32 is bent by the arm portion 290 and then enters the portion between the pressing mechanism 262 and the belt 96 of the conveyor 40, the upper plate portion of the reinforcing plate 32 is caused by the edge guides 320 and 320. The orientation of the reinforcing plate 32 is corrected so that 22 stands upright when viewed in the front-rear direction of the conveyor 40.

  As shown in FIG. 21B, in this embodiment, each introduction surface 324 is formed as a surface (C surface) that changes discontinuously with respect to the adjacent restriction surface 322. It is not essential to carry out the present invention. Each introduction surface 324 can be formed, for example, as a surface that continuously changes with respect to the corresponding restriction surface 322 (for example, an R surface that protrudes toward the upper plate portion 22).

  22 and 23 show how the upper plate portion 22 is bent with respect to the lower plate portion 24 by the arm portion 290 in a stepwise manner, and after the bending, the pressing mechanism 262 causes the upper plate portion 22 to be bent. It is shown in a stepwise manner that is bent more acutely with respect to the lower plate portion 24.

  As shown in FIG. 23C, when the angle formed by the upper plate portion 22 and the lower plate portion 24 is smaller than a certain angle, the arm portion 290 need not be assisted to bend the upper plate portion 22.

  Therefore, in the present embodiment, when the angle formed by the upper plate portion 22 and the lower plate portion 24 is smaller than a certain angle, the upper plate portion 22 is retracted from the arm portion 290 by its own weight. The descending speed is moderately limited by a weight and a damper (not shown).

  The damper is designed to generate a damping force using a fluid flow generated based on the rotational motion of the arm portion 290.

  The lowering speed of the arm part 290 is adjusted in advance so that the arm part 290 is restored to the lowest end position LM prior to the engagement in preparation for the engagement between the arm part 290 and the next reinforcing plate 32.

  As shown in FIG. 5 and FIG. 6, a pair of upper feed belts 330, 330 extends in the same direction as the conveyor 40, with the front end portion of the pressing mechanism 262 partially sandwiched from both sides, downstream of the pressing mechanism 262. ing. The pair of upper feed belts 330 and 330 are opposed to the pair of lower feed belts 332 and 332 below them. The upper feed belts 330 and 330 and the lower feed belts 332 and 332 are driven by corresponding ones of the plurality of motors 74.

  The fan 10 as a finished product is sandwiched between the pressing mechanism 262 and the conveyor 40 and then exits from the pressing mechanism 262. The fan 10 is continuously sent between the upper feed belts 330 and 330 and the lower feed belts 332 and 332 and further downstream. As a result, the fan 10 is discharged one by one from the fan manufacturing apparatus 60 and stored in an appropriate place (not shown).

  As described above, one embodiment of the present invention has been described in detail with reference to the drawings. The present invention can be implemented in other forms with various modifications and improvements.

It is a perspective view which shows the round fan manufactured by the round fan manufacturing apparatus according to one Embodiment of this invention. It is a top view which shows two components which comprise the fan shown in FIG. It is process drawing which shows the fan manufacturing method implemented using the said fan manufacturing apparatus. It is a top view for demonstrating a mode that the round fan shown in FIG. 1 is manufactured using two components shown in FIG. It is a top view which shows the said fan manufacturing apparatus. It is a side view which shows the fan manufacturing apparatus shown in FIG. It is a block diagram for demonstrating the electric system of the fan manufacturing apparatus shown in FIG. It is a top view which expands and shows the stacker of the reinforcement board injection | throwing-in apparatuses in FIG. It is a side view for demonstrating a mode that the several reinforcement board is accommodated in the stacker shown in FIG. It is a top view which expands and shows the separator of the reinforcement board injection | throwing-in apparatuses in FIG. It is a top view for demonstrating a mode that an adhesive agent is apply | coated to a reinforcement board by the adhesive agent coating apparatus in FIG. It is a top view which expands and shows the stacker of the fan main body injection | throwing-in apparatuses in FIG. FIG. 13 is a side view showing a plurality of guides for accommodating a fan body among a plurality of sheets in the stacker shown in FIG. 12. FIG. 13 is a side view showing a plurality of other guides for accommodating the fan body among the plurality of sheets in the stacker shown in FIG. 12. It is a top view which expands and shows the separator of the fan main body injection | throwing-in apparatus in FIG. It is a top view which expands and shows the fan main body conveyance apparatus in FIG. It is a side view which shows the fan main body conveying apparatus shown in FIG. It is a top view which expands and shows the attitude | position stabilization apparatus in FIG. It is a top view which expands and shows the bending mechanism of the bending apparatuses in FIG. FIG. 20 is a side view showing the bending mechanism shown in FIG. 19 together with a part of the pressing mechanism. FIG. 21 is a side view showing the entire pressing mechanism shown in FIG. 20 and a plan view showing the correction mechanism shown in FIG. 20. FIG. 20 is a side view showing stepwise the first half of the process in which the upper plate portion is bent with respect to the lower plate portion by the arm portion and the pressing mechanism in FIG. 19. FIG. 20 is a side view showing stepwise the latter half of the process in which the upper plate portion is bent with respect to the lower plate portion by the arm portion and the pressing mechanism in FIG. 19.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fan 12 Fan part 14 Handle part 20 Middle board part 22 Upper board part 24 Lower board part 30 Fan body 32 Reinforcement board 40 Conveyor 42 Reinforcement board feeding device 44 Adhesive application device 46 Fan body feeding device 48 Fan body conveyance device 50 Folding Bending device 60 Fan manufacturing device 76 Negative pressure generating device 96 Belt 97 Air opening 260 Bending mechanism 262 Pressing mechanism 264 Correction mechanism 290 Arm

Claims (10)

A fan manufacturing apparatus for manufacturing a fan having a fan part and a handle part,
The handle portion has a structure in which an intermediate plate portion is sandwiched between an upper plate portion and a lower plate portion,
The fan has a reinforcing plate that integrally includes the upper plate portion and the lower plate portion on one plane and is bent so that the fan portion and the middle plate portion are integrally formed on one plane. Manufactured by being joined to the fan body,
The fan manufacturing equipment
A conveyor that conveys the reinforcing plate and the fan body in one direction while supporting the fan body in a substantially horizontal posture;
The reinforcing plate has been conveyed in one direction while supporting the fan body in a substantially horizontal posture, and the reinforcing plate has been conveyed to the conveyor, and at least the middle plate portion of the fan body has been conveyed by the conveyor. A fan body feeding device that is placed so as to be superimposed on the lower plate portion of
A folding device that folds the upper plate portion of the reinforcing plate and superimposes it on the middle plate portion after the fan body is superimposed on the reinforcing plate, and
The fan body transporting device is disposed above the conveyor so as to have a height clearance that allows the reinforcing plate to advance by the conveyor, and In view, it moves in the same direction as the reinforcing plate, while in side view, it moves from above the conveyor so as to move along a path that intersects the moving path of the reinforcing plate at an acute angle. Fan making equipment. The conveyor has a direction in which a straight direction passing through both the upper plate portion and the lower plate portion of the reinforcing plate in the unfolded state coincides with a moving direction of the reinforcing plate, and the upper plate portion is at the head. In a certain direction, transport the reinforcing plate,
In the fan body conveying device, the direction of the center line of the fan set in the fan body so as to extend along the middle plate portion is an orientation that coincides with the moving direction of the reinforcing plate in a plan view. Transport the fan body in the direction where the plate part is at the top,
The bending device is configured to act on the upper plate portion by applying a force in a direction that opposes the forward movement of the upper plate portion of the reinforcing plate advanced in the unfolded state by the conveyor. The fan manufacturing apparatus of Claim 1 containing the raising / lowering mechanism which raises / lowers in the direction which approaches the upper surface of the said intermediate | middle board part. The undulation mechanism is
Including an arm portion rotatable around a rotation axis extending in a direction intersecting a moving direction of the reinforcing plate,
The arm portion is positioned in front of the upper plate portion in the standby state, and when the upper plate portion approaches and shifts to the engaged state, the arm portion is advanced by the conveyor. Is rotated in a direction to bend the upper plate portion with respect to the lower plate portion around the rotation axis by the force received from
The bending device is a pressing mechanism arranged to face the conveyor, and the reinforcing plate enters after the upper plate portion is bent with respect to the lower plate portion. The fan manufacturing apparatus of Claim 2 including what presses the said upper board part to the said middle board part by the cooperative action with the advance movement of the said reinforcement board by the said conveyor.   The bending device further corrects the orientation of the upper plate portion by sandwiching the upper plate portion from both sides in the lateral direction when the reinforcing plate attempts to enter the pressing mechanism in the bent state. The fan manufacturing apparatus of Claim 3 containing a correction mechanism.   Furthermore, the fan manufacturing apparatus in any one of the Claims 1 thru | or 4 containing the coating device which apply | coats an adhesive agent on the upper surface of the said reinforcing board before the said fan body is piled up on the said reinforcing board.   The coating device has a nozzle disposed at a fixed position above the conveyor, and discharges the adhesive from the nozzle toward the upper surface of the reinforcing plate while the reinforcing plate is advanced by the conveyor. Item 5. A fan manufacturing apparatus according to item 5. The conveyor is an endless belt that contacts the lower surfaces of the reinforcing plate and the fan body and supports the reinforcing plate and the fan body from below, and has a plurality of air openings arranged in the length direction of the belt. Including those having
The fan manufacturing apparatus further includes
The fan manufacturing apparatus according to any one of claims 1 to 6, further comprising a negative pressure generating device that generates negative pressure in the plurality of air openings and sucks the reinforcing plate and the fan body toward the belt. A fan manufacturing method for manufacturing a fan having a fan part and a handle part,
The handle portion has a structure in which an intermediate plate portion is sandwiched between an upper plate portion and a lower plate portion,
The fan has a reinforcing plate that integrally includes the upper plate portion and the lower plate portion on one plane and is bent so that the fan portion and the middle plate portion are integrally formed on one plane. Manufactured by being joined to the fan body,
The fan manufacturing method is
Reinforcing plate loading step of loading the reinforcing plates one by one into a conveyor for conveying in one direction while supporting the reinforcing plate and the fan body in a substantially horizontal posture;
A reinforcing plate conveying step of conveying the loaded reinforcing plate using the conveyor;
A fan body charging step of loading the fan body one by one into the fan body transport device for transporting the fan body in one direction while supporting the fan body in a substantially horizontal posture,
The inserted fan body is conveyed using the fan body conveying device, the fan body is transferred to the conveyor, and at least the middle plate portion of the fan body is moved to the lower plate portion of the reinforcing plate. A fan body conveyance process to be placed so as to be superposed,
A folding step in which the upper plate portion of the reinforcing plate is folded and superimposed on the middle plate portion after the fan body is superimposed on the reinforcing plate, and
The fan body conveying device is disposed above the conveyor so as to have a clearance of a height that allows the reinforcing plate to advance by the conveyor, between the conveyor and the conveyor.
In the fan body conveying step, the inserted fan body is moved in the same direction as the reinforcing plate in a plan view, while from the upper side of the conveyor in a side view, with respect to the moving path of the reinforcing plate. The fan manufacturing method of conveying using the said fan main body conveying apparatus so that it may move along the path | route which crosses acutely. The reinforcing plate transporting step is such that a straight line direction that passes through both the upper plate portion and the lower plate portion of the reinforcing plate in the unfolded state coincides with a moving direction of the reinforcing plate, and the upper plate portion Including a first transporting step of transporting the reinforcing plate in a direction in which
In the fan body conveying step, the direction of the center line of the fan set on the fan body so as to extend along the middle plate portion is an orientation that coincides with the moving direction of the reinforcing plate in plan view, and Including a second conveying step of conveying the fan body in a direction in which the plate portion is at the head,
The bending step is performed by causing the upper plate portion to act on the upper plate portion with a force that opposes the forward movement of the upper plate portion of the reinforcing plate that is advanced in the unfolded state by the conveyor. The fan manufacturing method of Claim 8 including the undulation process which undulates in the direction which approaches the upper surface of the said intermediate | middle board part. In the undulation process, the front plate of the reinforcing plate moved forward by the conveyor obstructs the advancement of the reinforcing plate, and the upper plate portion is moved by the cooperative action with the forward movement of the reinforcing plate by the conveyor. Including a step of bending the lower plate portion,
The bending step further includes
The method according to claim 9, further comprising a step of pressing the upper plate portion against the middle plate portion after the upper plate portion is bent with respect to the lower plate portion, in cooperation with a forward movement of the reinforcing plate by the conveyor. The round fan manufacturing method of description.

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