JPH0367942B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a bobbin mounting device for a winding machine that winds a wire rod around a bobbin with an appropriate number of turns, and in particular, it is capable of firmly fixing a bobbin and is capable of attaching wire rods of different shapes. The present invention relates to a bobbin mounting device for a winding machine that can also be mounted on a bobbin.

[Conventional technology]

As shown in FIG. 8, a conventional bobbin mounting device of this type includes a core metal 1 that can expand and contract diagonally by forming a plurality of slots along the longitudinal direction of a square rod shaft. This core metal 1 is always biased and supported in the contraction direction by a disc-shaped support part 2 located coaxially, and a connecting shaft (not shown) is connected concentrically to the main shaft of the winding machine at the base end. 3 and a core holding part 4 having a core bar holding part 4 having a core bar holding part 4 having a core bar holding part 4 having a core bar holding part 4 having a diameter of 3. In order to mount, for example, a bobbin 5 for forming a transformer into this bobbin mounting device, the core metal 1 is contracted in the center direction,
The diameter hole 6 of the bobbin 5 is directly fitted to the outer circumferential surface of the core metal 1 as shown by arrow A, and then the core metal 1
was expanded in the diagonal direction by a suitable movable mechanism, and the bobbin 5 was mounted and fixed with the outer circumferential surface of the core bar 1 in close contact with the inner circumferential wall of the aperture hole 6.

[Problem that the invention seeks to solve]

However, in such a conventional bobbin mounting device, the core metal 1 is configured to be able to expand and contract in the diagonal direction by forming a plurality of slots on the square bar shaft, so that the diameter hole of the bobbin 5 can be expanded and contracted. It is good if the diagonal direction and dimensions of 6 correspond to the expansion direction and dimensions of the core bar 1, but if these directions and dimensions are misaligned, the core bar 1 may not expand sufficiently. , the adhesion was insufficient. Therefore, the bobbin 5 was not firmly fixed to the core metal 1 in some cases. For this reason, the winding of the wire rod around the bobbin 5 was sometimes not completed neatly. In order to prevent this, the processing accuracy of the core metal 1 must be increased, which is expensive. In addition, in one core metal 1, the shape of the diameter hole 6 of the bobbin 5 is limited to one type, and multiple types of bobbins 5 with diameter holes 6 of different shapes, such as square, rectangle, or circle, are respectively fitted. It was not possible to install it. Therefore, it was necessary to prepare a bobbin mounting device having a dedicated core bar 1 for each bobbin 5 having aperture hole 6 of each shape. As a result, the number of parts of the winding machine as a whole increases, and the winding machine becomes expensive.

Therefore, an object of the present invention is to provide a bobbin mounting device for a winding machine that can solve such problems.

[Means for solving problems]

The means of the present invention for solving the above problems is to drill a central hole having a tapered hole through the axial center of the round bar shaft, and to form a plurality of slots along the longitudinal direction of the round bar shaft. A core metal is formed so that it can be expanded and contracted, and this core metal is always biased and supported in the contraction direction by a supporting part located on the same axis. a core metal holding part having a coupling shaft coupled to the core metal, and a core metal holding part that is slidably inserted into the center hole of the core metal and has a tapered part at a position corresponding to the taper hole of the core metal, and a direction in which the metal core comes out from the taper hole. An operating shaft is always energized, and a circular fitting hole is drilled in the center of the shaft to fit into the outer circumferential surface of the cored metal, which is divided into multiple blocks along the longitudinal direction and expanded. ,
By means of a bobbin mounting device in a winding machine, which is retractable and is comprised of a split sleeve jig that constantly urges and connects the plurality of blocks in the contraction direction, and that fits and mounts a bobbin on the outer peripheral surface. It will be done.

[Effect]

The bobbin mounting device configured in this way has a core metal that can be expanded and contracted by forming multiple slots along the longitudinal direction of the round bar shaft, and a round hole that fits into the outer peripheral surface of the core metal. A split sleeve jig, which has a shaped fitting hole and can be expanded and contracted by dividing it into multiple blocks along the longitudinal direction, is fitted, and the diameter of the bobbin is fitted onto the outer peripheral surface of this split sleeve jig. After the holes are fitted, the split sleeve jig is expanded by expanding the core metal, and the bobbin is attached and fixed to the core metal.

[Example] Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a central longitudinal sectional view showing an embodiment of a bobbin mounting device for a winding machine according to the present invention. This bobbin mounting device includes a core metal 10 and a core metal holding part 11.
, an operating shaft 12 , and a split sleeve jig 13 . The core metal 10 fixes the bobbin 5 via a split sleeve jig 13, and has a center hole 15 that penetrates the axial center of the round bar shaft and has a tapered hole 14 that partially opens to the right in the figure. are drilled along the longitudinal direction of the round bar shaft, as shown in FIG.
For example, four slots 16, 16, . . . are formed in a cross shape, and can expand and contract radially in the circumferential direction from the axial center of the round bar shaft. Furthermore, a flange portion 17 and a headband groove portion 18 are formed at the root portion of the core metal 10 for connection with a core metal holding portion 11, which will be described later.

A core metal holding portion 11 is coupled to the root portion of the core metal 10. This core metal holding part 11 supports and fixes the core metal 10, and has a support part 19 at one end formed in a disc shape with a larger diameter than the root part of the core metal 10 and located coaxially. In addition, the base end portion has a coupling shaft 20 concentrically coupled to a winding machine main shaft (not shown). Core metal 10 of the support part 19
A large-diameter recess 21 and a small-diameter recess 22 are formed in two stages on the side end face concentrically with the support portion 19, and the core metal 10 is placed inside the small-diameter recess 22. The collar portion 17 of the core bar 10 is fitted into the large diameter recess 21, and the headband groove portion 1 of the root portion of the core bar 10 is fitted into the large diameter recess 21.
A donut-shaped core metal holding plate 23 incorporated in 8 is fitted and fixed, and this core metal holding plate 23 holds the core metal 1
0 is fixed so that it does not fall out. and,
Within the thickness of the core metal holding plate 23, there are compression springs 2, for example, located at four locations centripetally from the circumferential direction to the axial direction.
4, 24,... are provided, and this compression spring 2
4, 24, . . . , the core metal 10 is always urged in the contraction direction toward the axis and is supported and fixed. In addition, at the axial center of the core metal holding part 11,
A through hole 25 with a slightly small diameter is bored to communicate with the center hole 15 of the core metal 10, and the connecting shaft 20
A male thread is formed on the outer circumferential surface of.

The operating shaft 12 is slidably inserted into the center hole 15 and through hole 25 that are continuous at the axial center of the combined core metal 10 and core metal holding part 11 . This operating shaft 12 is for expanding and contracting the core metal 10, and is used to expand and contract the core metal 10 and the core metal holding part 1.
1, and a tapered portion 26 whose diameter increases to the right in FIG. 1 is formed at a position corresponding to the tapered hole 14 of the cored metal 10. For example, a washer 27 is attached to the base end inserted into the core holding portion 11, and when this washer 27 abuts against a small diameter stepped portion 28 formed in the middle of the through hole 25, the operating shaft 1
2 is prevented from coming off. A compression spring 29 is fitted between the lower part of the neck on the small diameter side of the tapered hole 26 and the bottom surface of the small diameter recess 22 of the core metal holding part 11.
The resilient force constantly urges the operating shaft 12 in the direction shown by arrow B from the tapered hole 14 of the core metal 10.

A split sleeve jig 1 is attached to the outer peripheral surface of the core metal 10.
3 is fitted. This split sleeve jig 13 has a bobbin 5 having, for example, a square diameter hole fitted on its outer peripheral surface.
As shown in the figures and FIG.
A circular fitting hole 30 that fits into the outer peripheral surface of the block 0 is bored, and four blocks 13a, 13b, . It is divided into 13c and 13d and can be expanded and contracted radially from the axis toward the outer circumference. At this time, each block 13a to 13d
are connected to each other by guide pins 32, 32, . . . so that the expansion and contraction operations are guided. Furthermore, the outer peripheral surface of each block 13a to 13d is provided with circumferential grooves 3
3, 33, . The four blocks 13a to 13d are always urged in the direction of contraction toward the axis and connected by force.

Next, the use of the bobbin mounting device configured as described above will be explained with reference to FIG. 5. Fifth
The figure shows a case where a bobbin 5 having a square diameter hole 6 is attached. First, in FIG. 1, the tip end 12' of the operating shaft 12 is set in a free state, and by moving the operating shaft 12 in the direction of arrow B by the elastic force of the compression spring 29, the tapered portion 12' is moved.
6 comes out from the tapered hole 14 in the core metal 10. Then, the core metal 10 is urged toward the axis by the elastic force of the compression springs 24, 24, etc. provided in the support part 19 of the core metal holding part 11, and is contracted in the axial direction and radially becomes small. In this state, as shown by arrow D in FIG. 10 fits. At this time, the split sleeve jig 13 is contracted toward the axis by the coil spring 34 wound around its outer peripheral surface. Next, as shown by arrow E in FIG. 5, the diameter hole 6 of the bobbin 5 is fitted onto the outer peripheral surface of the split sleeve jig 13 attached to the core metal 10, and the bobbin 5 is attached to the split sleeve jig 13. It fits into the jig 13.

Thereafter, in this state, the operating shaft 1 in FIG.
2 is pushed in the direction of arrow C by a pressing mechanism not shown. Then, the operating shaft 12 moves to the left in the figure against the elastic force of the compression spring 29, and as a result, its tapered portion 26 comes into contact with the inner circumferential surface of the tapered hole 14 of the core metal 10. While moving to the left. As a result, as the tapered portion 26 advances, each piece of the core metal 10 expands radially in the circumferential direction by the action of the tapered hole 14 against the compression springs 24, 24, . . . in the support portion 19. I'm going to be done. Then, due to the expansion operation of the core metal 10, the outer peripheral surface of the core metal 10 comes into contact with the inner peripheral surface of the fitting hole 30 of the split sleeve jig 13, and the split sleeve jig 13 is caused by the contraction of the coil spring 34. It expands against the force. Therefore,
This split sleeve jig 13 gradually expands radially toward the outer circumference, and finally, as shown in FIG. The bobbin 5 is firmly attached to the core metal 10 via a split sleeve jig 13.

In this state, the connecting shaft 2 of the core metal holding part 11
A required wire rod is wound around the bobbin 5 by rotating the main shaft of a winding machine (not shown) to which the wire rod 0 is connected. In order to remove the bobbin 5, it is sufficient to release the pressing force exerted by a pressing mechanism (not shown) that was pushing the tip end 12' of the operating shaft 12 in the direction of arrow C. Then, the operating shaft 12 becomes
The elastic force of the compression spring 29 causes the tapered portion 26 to come out in the direction of arrow B, and the tapered portion 26 moves to the right in the figure to release the expansion of the tapered hole 14 of the core metal 10. As a result, the core metal 10 is attached to the compression spring 2 in the support portion 19.
4, 24, . . . contract toward the axis.
As a result, the expansion of the split sleeve jig 13 is also released, and the split sleeve jig 13 is contracted toward the axis by the contraction force of the coil spring 34. Therefore, the aperture hole 6 of the bobbin 5 is no longer in close contact with the inner circumferential wall, and the bobbin 5 can be removed.

6 and 7 are a front view and a right side view showing a modification of the split sleeve jig 13. FIG. In this modification, the split sleeve jig 13 is formed into a prismatic shape with a rectangular cross section as a whole. In this case, a bobbin 5 having a rectangular diameter hole 6 can be fitted and mounted. Although not shown, the shape of the split sleeve jig 13 is not limited to that shown in FIG. 3 or FIG. 6, and may be formed into a cylindrical shape with a circular cross section, for example. in this case,
A bobbin having a circular diameter hole can be fitted and mounted.

In addition, in FIG. 1, the operating shaft 12 is shown as being inserted through almost the entire length of the combined core metal 10 and the core metal holding part 11, but the present invention is not limited to this. Center hole 1 passing through 10
5 may be inserted so as to be slidable in the directions of arrows B and C. In addition, in FIGS. 4 and 7, the elastic body that always urges the split sleeve jig 13 in the contraction direction is shown as a coil spring 34, but is not limited to this, and may be other elastic body such as rubber. It may be hot. Furthermore, although the coil spring 34 is shown as being wound around the outer peripheral surface of the split sleeve jig 13 in a band shape, the present invention is not limited to this, and each of the blocks 13a to 13d
It may be embedded inside.

〔Effect of the invention〕

Since the present invention is configured as described above, a plurality of slots 16, 16,
Core metal 10 that can be expanded and contracted by forming...
Then, a split sleeve jig 13 that can be expanded and contracted by dividing into a plurality of blocks 13a to 13d is fitted, and the diameter hole 6 of the bobbin 5 is fitted to the outer peripheral surface of this split sleeve jig 13. After that, by expanding the core metal 10, the split sleeve jig 13 can be expanded, and the bobbin 5 can be attached and fixed to the core metal 10. At this time, the outer circumferential surface of the core metal 10 is in the shape of a round bar, and the fitting hole 30 of the split sleeve jig 13
Since it has a round hole shape, the direction and dimensions of the force acting for expansion do not deviate, and the expansion movement of the core bar 10 is reliably transmitted to the split sleeve jig 13.
The split sleeve jig 13 can be fully expanded. Therefore, the outer peripheral surface of the split sleeve jig 13 can be brought into close contact with the diameter hole 6 of the bobbin 5, and the bobbin 5 can be firmly fixed. As a result, the winding of the wire around the bobbin 5 can be finished neatly.

Moreover, by preparing a plurality of types of split sleeve jigs 13 whose cross-sectional shapes are square, rectangular, or circular, bobbins 5 with different shapes such as aperture holes 6 having square, rectangular, or circular cross-sectional shapes can be prepared. Even if they are, they can be fitted and installed. Therefore, it is only necessary to prepare the split sleeve jig 13 for each bobbin 5 having a diameter hole 6 of each shape, and the number of parts of the winding machine as a whole can be reduced, and costs can be reduced. be able to.

[Brief explanation of drawings]

FIG. 1 is a central vertical sectional view showing an embodiment of the bobbin mounting device for a winding machine according to the present invention, FIG. 2 is a right side view of FIG. 1, and FIGS. 3 and 4 show a split sleeve jig. A front view and a right side view, FIG. 5 is a perspective explanatory view showing the usage state of the bobbin mounting device of the present invention,
6 and 7 are a front view and a right side view showing a modified example of the split sleeve jig, and FIG. 8 is a perspective explanatory view showing a conventional bobbin mounting device. 5... Bobbin, 6... Diameter hole, 10... Core metal,
11... Core metal holding part, 12... Operating shaft, 13...
Split sleeve jig, 13a-13d...Block of split sleeve jig, 14...Tapered hole, 15...Center hole, 16...Slit, 19...Support part, 20...
...Connection shaft, 23... Core metal presser plate, 24... Compression spring, 25... Through hole, 26... Taper part, 29...
...compression spring, 30...fitting hole, 31...split, 3
2...Guide pin, 33...Concave groove, 34...Coil spring.

Claims (1)

[Claims] 1. A core that can be expanded and contracted by drilling a central hole having a tapered hole through the axial center of the round bar shaft and forming a plurality of slots along the longitudinal direction of the round bar shaft. a metal core, and a core metal holding part that supports the metal core by constantly urging it in the contraction direction with a coaxial support part, and has a connecting shaft concentrically connected to the main shaft of the winding machine at the base end. an operating shaft that is slidably inserted into the center hole of the core metal, has a tapered portion at a position corresponding to the taper hole of the core metal, and is constantly biased in a direction to come out of the taper hole; A circular fitting hole that fits into the outer circumferential surface of the core metal is drilled in the part so that it can be divided into a plurality of blocks along the longitudinal direction and expanded and contracted, and the plurality of blocks can be expanded and contracted. 1. A bobbin mounting device for a winding machine, comprising a split sleeve jig that constantly urges and connects the bobbin in the direction of contraction, and that fits and mounts the bobbin on the outer peripheral surface.