JPH0434967Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a coil material holder that holds a coil material.

(Prior Art) Conventionally, in the case of a coil material holder equipped with a mechanism for expanding and contracting a mandrel arm, the main shaft 2 on the front side of the coil material holder 1 is rotated by a handle 3, as shown in FIG. 4 sets to 3 connected to a movable cylinder 4 that moves laterally in the axial direction as the main shaft 2 rotates.
There was one in which four or three mandrel arms 6 were radially expanded in diameter and reduced in diameter through a set of links 5 to hold the air core portion a of the coil material A. The four to three fixed coil material receivers 7 and the four to three movable coil material receivers 8 in such a coil material receiver 1 expand and contract radially together with the mandrel arm 6. 6, and has four to three radially formed protrusions, the coil material cradle body 1a.
The moving coil material receiver 8 is configured to slide in the radial direction along a guide groove 9 formed in the movable coil material receiver 8.
was provided so as to be able to slide freely along the axial direction on the mandrel arm 6, and was fixed on the mandrel arm 6 with a tightening screw for attachment and detachment.

(Problem that the invention is trying to solve) However, when trying to hold coil materials with various inner diameters with one model, different types This required a model of the same type, which increased equipment costs and was inconvenient and inefficient to use.

(Means for solving the problem) This invention was made to solve the above problem, and its gist is that the main body of the coil material holder is formed radially and has guide grooves formed in the direction of the material axis. a main shaft provided perpendicularly to the main shaft, and a mandrel arm that is expandable and contractible through a link connected to the main shaft and holds the inner diameter portion of the coil material;
A fixed coil material receiver that can expand and contract in the radial direction by following the mandrel arm using the coil material receiver main body as a guide, and a movable coil that is adjustable and fixed on the mandrel arm opposite to the fixed coil material receiver. A coil material holder consisting of a material receiver is provided with a slider that can be expanded and contracted in the radial direction by a link guided by the guide groove of the coil material holder main body, and one end of the mandrel arm is fitted in the slider in the radial direction. A plurality of fitting recesses are formed at appropriate intervals, and a guide portion is formed on one end surface of the fitting recesses for moving the fixed coil material receiver in a radial direction as the mandrel arm moves. is removably attached and fixed to a desired fitting recess of the slider via the fixed coil material receiver.

(Function) To set the mandrel arm to a diameter that can hold the inner diameter of the coil material in advance, pull out the mandrel arm from the fitting recess position of the previous slider, and set the slider arm approximately corresponding to the inner diameter of the coil material to be installed. A fitting recess is selected, and the mandrel arm is inserted into the appropriate position of the fitting recess of the slider through the fixed coil material receiver, and is fixedly attached. and,
The coil material is mounted on the mandrel arm, and then the main shaft is rotated to expand the diameter of the slider in the radial direction via the link, and as the slider moves, the mandrel arm presses and holds the inner diameter of the coil material from the inside. .

(Example) The details of this invention will be explained below based on the illustrated example. In the embodiments shown in FIGS. 1, 2, and 3, the same parts as in the conventional example shown in FIG.

This embodiment is different from the one shown in FIG. The slider 10 is supported by the link 5 in order to move the slider 10 in the radial direction, the mandrel arm 6 is removably attached and fixed to each of the plurality of fitting recesses 11 of the slider 10, and the fixed coil material receiver 12 can be moved onto the slider 10 separately from the mandrel arm 6.

That is, the slider 10 is rotatably supported by the link 5 at its lower end. Also, slider 10
is provided so as to be expandable and contractible in the radial direction by links 5 guided by guide grooves 9 of the coil material holder main body 1a. Furthermore, the slider 10 has a plurality of fitting recesses 11 formed at appropriate intervals in the longitudinal direction, into which the fitting portion 6a formed at one end of the mandrel arm 6 is fitted in the radial direction. The slider 10 has a guide portion 13 formed on its one end surface (that is, the mounting surface for the coil material A) for moving the fixed coil material receiver 12 in the radial direction as the position of the mandrel arm 6 is changed. The arm 6 is removably attached and fixed to appropriate parts of the fitting recess 11 with the fixed coil material receiver 12 interposed therebetween.

The link 5 has one end pivoted to the lower end of the slider 10 and the other end pivoted to the end of the movable cylinder 4 of the main shaft 2. The movable cylinder 4 is formed to slide left and right on the main shaft 2 using a guide, and furthermore, a female thread 14 is screwed into the core of the main shaft 2, and it can be rotated by the handle 3 on the female thread 14. An expansion/contraction screw member 15 is screwed together. The movable cylinder 4 is connected to an expansion/contraction screw member 15 via a bearing 16 at the opposite end to which the link 5 is pivoted, and is connected to a locking pin 17 implanted at the end of the expansion/contraction screw member 15. The engaging handle 3 moves the expansion/contraction screw member 15 forward and backward into the main shaft 2, and as the expansion/contraction screw member 15 rotates, it is pushed left and right and the main shaft 2
It is configured to slide upward.

The mandrel arm 6 has a cross-sectional shape as shown in FIG. 3, its outer peripheral surface 6b is curved in an arc shape, and the back surface 6c of the outer peripheral surface is circular.
Between the outer circumferential surface 6b and the back surface 6c, recesses 6d facing each other toward the axis are formed parallel to the outer circumferential surface 6b and along the material axis direction of the mandrel arm 6. . Also, the fitting portion 6a of this mandrel arm 6 to the slider 10
has a smaller diameter corresponding to the inner diameter of the fitting recess 11, and a female thread 18a is cut at the tip of the female thread 18a.
A bolt 19 is fastened to the slider 10 with a washer 20 interposed in the bolt 8a.

The fixed coil material receiver 12 is fitted into the guide portion 13 of the slider 10, and has a hole 21 formed in a shape corresponding to the fitting portion 6a of the mandrel arm 6 in its lower part. This hole 21 has a mandrel arm 6
A locking convex portion 21a is formed with which the concave portion 6d engages. Therefore, the fixed coil material receiver 12 is fitted into the recess 6d of the mandrel arm 6 by the locking convex portion 21a, and does not rotate relative to the mandrel arm 6. Conversely, the fixed coil material receiver 12 prevents the mandrel arm 6 from rotating.

The movable coil material receiver 22 is connected to the mandrel arm 6
It is fitted and slidably provided in the direction of the arrow b, and is fixed by a tightening screw 22a.

In the above-described configuration, in order to set the mandrel arm 6 in advance to a diameter that can hold the hollow core portion a of the coil material A, the mandrel arm 6 is pulled out from the position of the fitting recess 11 of the conventional slider 10 and attempted to be installed. Select the fitting recess 11 of the slider 10 that approximately corresponds to the inner diameter of the coil material A, and place the fitting portion 6a of the mandrel arm 6 at the appropriate fitting recess 11 position of the slider 10 with the fixed coil material receiver 12 interposed therebetween. Load, attach and fix. When this mandrel arm 6 is inserted, a fixed coil material receiver 12 having a hole 21 having the same cross-sectional shape as the mandrel arm 6
move the hole 21 upward and place the hole 21 in the desired fitting recess 11, then insert the mandrel arm 6 into the fixed coil material receiver 12 and the slider fitting recess 11, and then tighten the bolt 19 at the tip of the mandrel arm 6 and The mandrel arm 6 is attached and fixed to the slider 10 by a washer 20. Similarly, these remaining 2
The mandrel arms of 3 to 3 are similarly fixed to the slider. Then, the coil material A is mounted on the mandrel arms 6, and then the movable coil material receiver 22 is fitted to the mandrel arm 6, and the mandrel arm 6 is slid on the mandrel arm 6 and pressed against the side surface of the coil material A. 6. Attach and fix on top. Then, the handle 3 is engaged with the locking pin 17 of the expansion/contraction screw member 15, and the handle 3 is turned to rotate the expansion/contraction screw member 15, and the movable cylinder 4 is moved in the direction to press the link 5, so that the link 5 is Spread your legs. Then, the diameter of the slider 10 is expanded in the radial direction, and as the slider 10 moves, the mandrel arm 6 is pressed against the inner diameter of the coil material A from the inside, thereby holding the coil material A.

When inserting or removing the mandrel arm 6 from the slider 10, the mandrel arm 6 or the fixed coil material receiver 12 are both structured to prevent rotation, so the fixed coil material receiver 12 must be inserted onto the mandrel arm 6. This can also be done while the vehicle is still on board.

In this way, move the mandrel arm 6 to the slider 1.
0 and another fitting recess 11 of the slider 10
can be easily replaced. Furthermore, the mandrel arm 6 can be set in advance to a diameter corresponding to the hollow core portion a of the coil material A to be attached. Moreover, one model can hold coil materials with various inner diameters.

(Effects of the invention) As explained above, in this invention, a main shaft is provided orthogonally to the main body of the coil material holder, which is formed radially and has a guide groove formed in the direction of the material axis, and a link connected to the main shaft. a mandrel arm that can be freely expanded and contracted through a mandrel arm that holds the inner diameter part of the coil material, and a fixed coil material holder that can be expanded and contracted in the radial direction by following the mandrel arm using the coil material holder main body as a guide. and a movable coil material holder that is adjustable and fixed on the mandrel arm opposite to the fixed coil material holder, the coil material holder is configured by a link using the guide groove of the coil material holder main body as a guide. A slider that can be expanded and contracted in the radial direction is provided, and the slider has a plurality of fitting recesses formed at appropriate intervals in the radial direction into which one end of the mandrel arm fits, and further has the fixed coil material on one end surface thereof. A guide portion is formed to move the receiver in the radial direction as the mandrel arm moves, and the mandrel arm is removably attached and fixed to a desired fitting recess of the slider via the fixed coil material receiver. By this,
The mandrel arm can be detached from the slider 10 and easily replaced with another fitting recess of the slider 10. Therefore, this mandrel arm can be set in advance in the fitting recess corresponding to the diameter of the hollow core portion of the coil material A to be installed, so that work efficiency can be improved. In addition, by replacing this mandrel arm, the coil material holder of one model can be used to hold coil materials of different inner diameters, making it more versatile, reducing equipment costs for other models compared to the previous model. can be reduced.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a side view showing the main parts of the coil material holder, FIG. 2 is a plan view of FIG. 1, and FIG. is the first
The front view of the figure and FIG. 4 are an overall view of a conventional coil material holder. 1... Coil material holder, 1a... Coil material holder main body, 2... Main shaft, 3... Handle, 4... Moving tube, 5... Link, 6... Mandrel arm,
6a... Fitting portion, 6b... Outer peripheral surface, 6c... Back surface, 6d... Recessed portion, 7... Fixed coil material receiver, 8
...Movable coil material receiver, 9...Guide groove, 10...
... Slider, 11 ... Fitting recess, 12 ... Fixed coil material receiver, 13 ... Guide section, 14 ... Female thread, 15 ... Expansion/contraction screw member, 16 ... Bearing, 1
7... Locking pin, 19... Bolt, 20... Washer, 21... Hole, 21a... Locking protrusion, 22...
...Movable coil material receiver, 22a...Tightening screw.

Claims (1)

[Scope of utility model registration request] A main axis is provided perpendicularly to the main body of the coil holder, which is formed radially and has a guide groove formed in the direction of the material axis, and is expandable and contractible via a link connected to the main axis. a mandrel arm that holds a fixed coil material receiver that can be freely expanded and contracted in the radial direction by following the mandrel arm using the coil material receiver body as a guide; In a coil material holder consisting of a movable coil material holder fixed to a movable coil material holder in an adjustable manner, a slider is provided which can be expanded and contracted in the radial direction by a link guided by a guide groove in the coil material holder main body. a plurality of fitting recesses into which one end of the mandrel arm fits are formed at appropriate intervals in the direction;
Further, a guide portion is formed on one end surface of the fixed coil material receiver to move the fixed coil material receiver in a radial direction as the mandrel arm moves, and the mandrel arm is guided through the fixed coil material receiver to fit the slider in a desired manner. A coil material holder characterized by being detachably attached and fixed in a recess.