JP2003142330A - Device for manufacturing winding form coil bobbin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing device for a winding form coil bobbin which is stable in quality, superior in production efficiency, and reduced in manufacturing cost. SOLUTION: A winding shaft 6, having an outside diameter nearly equal to the inner diameter of a winding form coil bobbin 22 and suction openings 9a and 9d on its external face, a belt-like sheet material 4, which is nearly equal in length to the external circumference of the winding shaft 6, is attracted and supported on the external circumference of the winding shaft 6, while with winding shaft 6 is rotated, and a winding 21 is wound on the belt-like sheet material 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding coil bobbin manufacturing apparatus which is manufactured by using a belt-shaped sheet material such as kraft paper.

[0002]

2. Description of the Related Art Conventionally, a paper bobbin has been used, but a conventional paper bobbin is formed by spirally winding a long ribbon-shaped paper to form a paper cylinder, and cutting the paper cylinder into a predetermined length. Make up the bobbin. Then, the paper bobbin is generally set on the winding shaft of a winding machine, and the paper bobbin is wound to form a winding coil bobbin.

[0003]

However, in the conventional method for manufacturing the wound coil bobbin, a step of spirally winding a ribbon-shaped paper to produce a paper cylinder, and cutting the paper cylinder into a predetermined length. The process comprises the steps of forming a paper bobbin with a coil, setting the paper bobbin on the winding shaft of a winding machine, and winding the paper bobbin.

As described above, in the conventional manufacturing method, since the step of making the paper cylinder and the step of winding the paper bobbin are separate steps, the number of steps inevitably increases, and the work and the steps are complicated. , Work efficiency is low and cost is high.

When the paper bobbin is set on the winding shaft of the winding machine, the clearance between the inner diameter of the paper bobbin and the outer diameter of the winding shaft must be strictly controlled. That is, when the inner diameter of the paper bobbin is substantially equal to the outer diameter of the winding shaft and there is almost no clearance, it is difficult to set the paper bobbin on the winding shaft, resulting in poor work efficiency. On the other hand, if the inner diameter of the paper bobbin is much larger than the outer diameter of the winding shaft, the gap between the paper bobbin and the winding shaft becomes large, and the paper bobbin cannot be fixed securely. The bobbin has drawbacks such as wrinkles and deterioration of quality.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art, to provide a winding coil bobbin manufacturing apparatus which is stable in quality, has high production efficiency, and can reduce cost.

[0007]

In order to achieve the above object, the first means of the present invention has an outer diameter substantially equal to the inner diameter of a wound coil bobbin, and a plurality of suction openings are formed on the outer peripheral surface. On the outer peripheral surface of the winding shaft, a belt-shaped sheet material having a length substantially equal to the length of the outer circumference of the winding shaft is attracted and supported on the outer peripheral surface of the winding shaft while the winding shaft is rotated, and is wound from above the belt-shaped sheet material. It is characterized by applying a line.

According to a second aspect of the present invention, in the first aspect, a plurality of suction holes, which are individually communicated with the plurality of suction openings, are provided inside the winding shaft, and the suction holes are respectively provided at the rear end of the winding shaft. A plurality of concentric annular grooves that are individually communicated with the suction holes are formed, and a fixed support member that supports a plurality of suction tubes that individually opposes the respective annular grooves abuts the rear end of the winding shaft, and A structure in which the strip-shaped sheet material is attracted from the suction opening when the strip-shaped sheet material winds around the winding shaft as the winding shaft rotates and when the suction opening comes under the strip-shaped sheet material. It is characterized by being.

According to a third aspect of the present invention, in the first aspect, a cutter portion is provided on a conveying path of the strip-shaped sheet material to a winding shaft, and a winding start end of the strip-shaped sheet material is sucked by the suction opening. After being supported, the belt-shaped sheet material is cut into a predetermined length by the cutter portion.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of the entire winding coil bobbin manufacturing apparatus, FIG. 2 is a perspective view of a rotary joint including a winding shaft, FIG. 3 is a front view of a rotary joint including a winding shaft, and FIG. FIG. 5 is an enlarged view of the portion X in FIG. 4, FIG. 6 is a perspective view of the rear end of the winding shaft, FIG. 7 is a side view of the rear end, and FIG. 8 is provided on the fixed side support plate. Showing the positional relationship between the suction tubes, FIG. 9 shows the positional relationship between the annular groove provided at the rear end of the winding shaft and the suction tube provided at the fixed side support plate, and FIGS. FIG. 14 is a view showing a state in which the strip-shaped sheet is attracted to the shaft, and FIG. 14 is a cross-sectional view of a winding coil bobbin having a winding according to the embodiment of the present invention.

As shown in FIG. 1, the winding coil bobbin manufacturing apparatus is mainly composed of a bobbin sheet supply section 1, a cutter section 2, and a winding section 3. A roll 5 around which a long strip-shaped sheet material 4 made of, for example, kraft paper or a plastic sheet is wound is mounted on the bobbin sheet supply unit 1 so as to be able to be fed out while applying a predetermined tension.
The width W1 of the strip-shaped sheet material 4 is the same as the width W2 (see FIG. 14) of the winding coil bobbin. The strip-shaped sheet material 4 is fed toward the winding portion 3, and the cutter portion 2 is installed in the middle of the conveying path.

A large number of winding shafts 6 are arranged side by side in the winding portion 3 at a predetermined interval. Although not shown, the bobbin sheet supply unit 1 and the cutter unit 2 described above are arranged in parallel for each winding shaft 6.

The strip-shaped sheet material 4 cut by the cutter portion 2 is wound around the peripheral surface 7 of the winding shaft 6 for one round. Inside the winding shaft 6, a plurality of L-shaped sheets ( In this embodiment, four suction holes 8 (8a to 8d) are provided in parallel to the axial direction (see FIGS. 4 and 5), and the suction openings 9 thereof are provided.
(9a to 9d) are equally spaced on the circumferential surface 7 of the winding shaft 6 along the circumferential direction (in this embodiment, 90 degrees apart as shown in FIG. 10),
In addition, the circumferential surface 7 is provided along the axial direction of the winding shaft 6 at a predetermined interval, and the peripheral surface 7 serves as a suction surface.

A rotary joint 10 is provided on the rear end side of the winding shaft 6. This rotary joint 10 is shown in FIG.
As shown in, the four annular grooves 13 (13a to 13d) opened toward the end surface 12 on the rear end 11 side of the winding shaft 6 are
Concentric circles are formed around the rotation center axis of the winding shaft 6. In FIG. 7, the four annular grooves 13 (13a to 13d) are hatched. The suction hole 8 is provided in the innermost annular groove 13a.
a is the suction hole 8b in the second annular groove 13b, the suction hole 8c is in the third annular groove 13c (see FIGS. 4 and 5), and the suction hole 8d is in the outermost annular groove 13d (see FIG. 4, FIG. (See FIG. 5), which are in communication with each other.

The fixed-side support plate 14 abuts on the end surface 12 on the rear end 11 side of the winding shaft 6, and the fixed-side support plate 1 as shown in FIG.
Four suction pipes 15 (15a to 15d) are connected to 4, and air valves 16 (16a to 16d) are individually connected to the rear ends of the suction pipes 15 (15a to 15d). FIG. 8 is a diagram showing a positional relationship between the four suction pipes 15 (15a to 15d), and FIG. 9 is a diagram showing a positional relation between the annular groove 13 (13a to 13d) and the suction pipes 15 (15a to 15d).

Therefore, suction openings 9a-9d-suction hole 8a
8d-annular groove 13a-13d-suction pipe 15a-15d
-The air valves 16a to 16d are connected in different systems.

As shown in FIG. 1, the fixed side support plate 14 also connects and supports the bearing portion 17, and the rear end portion 1 of the winding shaft 6 is interposed through a plurality of bearings 18 incorporated in the bearing portion 17.
1 is rotatably supported. By the adjusting screw 19 attached to the bearing portion 17, the contact surface pressure between the rear end portion 11 of the winding shaft 6 and the fixed side support plate 14 is appropriately maintained. As shown in FIG. 5, a labyrinth packing 20 is provided on the contact surface between the rear end 11 of the winding shaft 6 and the fixed-side support plate 14.

Although not shown, the rear end 11 of the winding shaft 6 is connected to a rotating mechanism including a pulley and a belt through the fixed side support plate 14, and the driving force rotates the winding shaft 6 in a predetermined direction. . A rotary joint 10 is constituted by the rear end portion 11 of the winding shaft 6, the fixed-side support plate 14, the bearing portion 17, the rotating mechanism, and the like.

FIG. 10 to FIG. 13 are views showing the suction order of the strip-shaped sheet on the winding shaft 6. The winding shaft 6 is rotated at a predetermined speed in the arrow R direction by the above-mentioned rotating mechanism,
First, the air valve 16b is switched to the suction mode to perform vacuum suction from the suction hole 8b. Then, the leading end of the belt-shaped sheet material 4 conveyed from the cutter portion 2 side by the conveying means (not shown) is adsorbed to the peripheral surface of the winding shaft 6. In this state, the remaining air valves 16a, 16c, 16d are not in the suction mode, and therefore the remaining suction holes 8a, 8d
Vacuum suction from c and 8d is not performed.

In this manner, the cutter portion 2 is operated to cut the rear side of the strip-shaped sheet material 4 while the tip end portion of the strip-shaped sheet material 4 is adsorbed and supported by the winding shaft 6. The length of the cut strip-shaped sheet material 4 corresponds to the length of one revolution of the winding shaft 6 (see FIGS. 1 and 13). In other words, the distance between the cutter portion 2 and the winding shaft 6 is adjusted so as to correspond to the length of one winding of the winding shaft 6. Therefore, if the diameter of the winding coil bobbin to be formed (that is, the diameter of the winding shaft 6) changes, the distance between the cutter portion 2 and the winding shaft 6 can be adjusted accordingly. Note that in FIG. 1, the cutter portion 2 is drawn sufficiently away from the winding shaft 6 in order to avoid complication of the drawing.

Next, as shown in FIG. 11, when the suction hole 8c comes under the strip-shaped sheet material 4, suction is also started from the suction hole 8c and the portion of the strip-shaped sheet material 4 is sucked onto the winding shaft 6. To do. In this way, the air valves 16 are sequentially switched to the suction mode in synchronization with the rotation of the winding shaft 6, and finally all the air valves 16 are set to the suction mode as shown in FIG. 13 so that the four suction holes 8 (8a to 8d) are formed. ), The strip-shaped sheet material 4 is firmly adsorbed and supported by the winding shaft 6, and the strip-shaped sheet material 4 is formed into a cylindrical shape. In the case of the present embodiment, as shown in FIG. 13, when the strip-shaped sheet material 4 is wound around the winding shaft 6, a slight gap 23 is formed between the winding start end and the winding end thereof. Has been set.

In this attracted state, as shown in FIG.
All the air valves 16 are maintained in the suction mode until the end of the winding, and the suction mode is released when the winding 21 ends, and the winding is automatically taken out from the winding shaft 6. The wound coil bobbin 22 thus taken out is shown in FIG.

In the above-described embodiment, one by one is sequentially sucked from the suction holes 8 (8a to 8d) in synchronism with the rotation of the winding shaft 6, but the present invention is not limited to this, and the winding coil bobbin 22 is not limited thereto. When the diameter is small or the rotation speed of the winding shaft 6 is high, a plurality of adjacent ones, for example, in the case of the present embodiment, a suction hole 8b and a suction hole 8c, and a suction hole 8a and a suction hole 8d are combined at the same time. It is possible to suck, or to suck all the suction holes at the same time.

[0024]

As described above, the present invention (first means) has the outer diameter substantially equal to the inner diameter of the winding coil bobbin, and has a plurality of suction openings formed on the outer peripheral surface thereof. On the outer peripheral surface of the shaft, a belt-shaped sheet material having a length substantially equal to the outer circumference of the winding shaft is attracted to and supported on the outer peripheral surface of the winding shaft while rotating the winding shaft, and the winding is performed from above the belt-shaped sheet material. It is characterized by applying.

According to this structure, it is possible to form and hold the strip-shaped sheet material in a cylindrical shape with respect to the winding shaft, to hold the winding-shaped sheet material, and to wind the strip-shaped sheet material in a series of steps, resulting in high production efficiency and low cost. It can be reduced. Further, since the strip-shaped sheet material is wound in a state of being in close contact with the winding shaft, wrinkles do not occur on the strip-shaped sheet material when the winding is performed, the winding state is good, and the winding quality is stable. Type coil bobbin can be manufactured.

According to the present invention (second means) of claim 2, as described above, a plurality of suction holes individually communicating with the plurality of suction openings are provided inside the winding shaft, and after the winding shaft. A plurality of concentric annular grooves that are individually connected to the suction holes are formed at the end portions, and a fixed support member that supports a plurality of suction pipes that individually oppose the annular grooves contacts the rear end portion of the winding shaft. In contact with each other, the belt-shaped sheet material is wound around the winding shaft as the winding shaft rotates, and the suction of the belt-shaped sheet material from the suction opening is performed at a timing when the suction opening comes under the belt-shaped sheet material. It is characterized by being configured to perform.

According to this structure, since the strip-shaped sheet material is sequentially adsorbed to the winding shaft, the production efficiency is high and the cost can be reduced.

As described above, the present invention (second means) according to claim 2 is such that a cutter portion is provided on the conveyance path to the winding shaft of the strip-shaped sheet material, and the winding start end of the strip-shaped sheet material is the suction. The strip-shaped sheet material is cut into a predetermined length by the cutter portion after being sucked and supported by the use opening.

According to this structure, when the strip-shaped sheet material is cut, the winding start end of the strip-shaped sheet material is already adsorbed and supported by the winding shaft, so that the strip-shaped sheet material can be easily cut and the strip-shaped sheet material after cutting is not prepared. In addition, it can be smoothly taken up by the winding shaft without dropping off from the conveying path, the production efficiency is high, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an entire winding coil bobbin manufacturing apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view of a rotary joint including a winding shaft.

FIG. 3 is a front view of a rotary joint including a winding shaft.

FIG. 4 is a sectional view of a rotary joint including a winding shaft.

FIG. 5 is an enlarged view of part X in FIG. 4;

FIG. 6 is a perspective view of a rear end portion of the winding shaft.

FIG. 7 is a side view of a rear end portion.

FIG. 8 is a diagram showing a positional relationship of suction tubes provided on a fixed side support plate.

FIG. 9 is a diagram showing a positional relationship between an annular groove provided at a rear end portion of a winding shaft and a suction tube provided at a fixed side support plate.

FIG. 10 is a view showing a suction order of the strip-shaped sheets with respect to the winding shaft.

FIG. 11 is a view showing a suction order of the belt-shaped sheet with respect to the winding shaft.

FIG. 12 is a view showing a suction order of the strip-shaped sheets with respect to the winding shaft.

FIG. 13 is a view showing a suction order of the belt-shaped sheet with respect to the winding shaft.

FIG. 14 is a cross-sectional view of a wound coil bobbin obtained according to an embodiment of the present invention.

[Explanation of symbols]

1 Bobbin seat supply unit 2 cutter 3 winding part 4 band-shaped sheet material 5 rolls 6 reel 7 circumference 8, 8a-8d Suction hole 9,9a-9d suction opening 10 rotary joint 11 Rear end 12 end faces 13, 13a to 13d annular groove 14 Fixed side support plate 15, 15a to 15d suction tube 16, 16a-16d Air valve 17 Bearing 18 bearings 19 Adjustment screw 20 Labyrinth packing 21 winding 22 winding coil bobbin 23 Gap

Claims (3)

[Claims] 1. A winding shaft having an outer diameter substantially equal to the inner diameter of a winding coil bobbin and having a plurality of suction openings formed on the outer peripheral surface thereof, has a length substantially equal to the outer circumference of the winding shaft. An apparatus for manufacturing a winding bobbin, characterized in that the belt-shaped sheet material is adsorbed on and supported by an outer peripheral surface of the belt-shaped sheet material while rotating the winding shaft, and winding is performed on the belt-shaped sheet material. 2. The winding coil bobbin manufacturing apparatus according to claim 1, wherein a plurality of suction holes individually communicating with the plurality of suction openings are provided inside the winding shaft, and each of the suction holes has a rear end portion. A plurality of concentric annular grooves that are individually communicated with the suction holes are formed, and a fixed support member that supports a plurality of suction tubes that individually opposes the respective annular grooves abuts the rear end of the winding shaft, A structure in which the strip-shaped sheet material is attracted from the suction opening when the strip-shaped sheet material winds around the winding shaft as the winding shaft rotates and when the suction opening comes under the strip-shaped sheet material. An apparatus for manufacturing a wound coil bobbin, which is characterized in that 3. The winding coil bobbin manufacturing apparatus according to claim 1, wherein a cutter portion is provided on a conveying path of the strip-shaped sheet material to a winding shaft, and a winding start end of the strip-shaped sheet material is sucked by the suction opening. The outer peripheral surface of the winding coil bobbin has an outer diameter substantially equal to the inner diameter of the winding coil bobbin, and is configured to cut the strip-shaped sheet material into a predetermined length by the cutter after being supported. A belt-shaped sheet material having a length substantially equal to the length of the outer circumference of the winding shaft is attracted to and supported on the outer peripheral surface of the winding shaft having the opening for use while rotating the winding shaft. A winding bobbin manufacturing apparatus characterized by winding a wire from above a material.