JPH078703B2 - Wire rod winding end hook device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding start end hooking device for automatically hooking a wire rod winding start end when winding a wire rod on a spool and locking the spool.

2. Description of the Related Art When a wire rod such as a metal wire (including a single wire, a twisted wire, and a covered wire) is wound around a spool in an aligned manner, the winding start end of the wire rod is generally hooked on a part of the spool cylinder at the beginning of winding. Has been done. This wire rod winding start end is hooked on the spool,
It is a common practice to bend and shape the wire winding start end in advance into a hook shape, and insert this bent end into a hooking hole formed in a part of the spool body to hook it. A step of bending the winding start end of the wire and a step of inserting the bent end of the wire into the hooking hole of the spool drum are disadvantageous in terms of man-hours and equipment.

Therefore, as a solution to the above problem, after inserting the winding start end of the wire rod into the hooking hole of the winding drum of the spool, the wire rod end protruding into the winding drum is rotated while being sandwiched by bending tools. A device that is bent into a predetermined shape and hooks in a hook hole has been put into practical use. For wire winding work using this device, insert the winding start end of the wire into the hooking hole of the spool, bend and lock it, then remove the bent tools from the winding start end of the spool. This is done by rotating the wire, and the automatic winding of the wire can be easily performed.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, when the winding start end of the wire rod is bent and locked in the spool retaining hole to start winding the wire rod on the spool, the tensile force of the wire rod is directly applied to the winding start end of the wire rod at the beginning of winding. Join in. Therefore, if the winding start end of the wire rod is bent only about one turn, the winding start end of the wire rod may be stretched by the pulling force at the time of winding and come off the hook hole. This tends to occur frequently in thin wire materials, soft materials, and other weak materials, which deteriorates the operating rate of the automatic winding machine. Also, if the winding start end of the wire rod inserted in the hook hole of the spool is bent over several turns, there is no concern about the wire rod coming off the hook hole, but the wire rod is complicatedly folded for several turns inside the winding drum of the spool. It is technically difficult to bend and it is not practically used.

Means for Solving the Problems The present invention has been made in view of the above-mentioned problems in hooking a wire rod winding start end onto a spool in an automatic winding machine, and the wire rod winding start end is dedicated to a hooking hole of the spool. When bent and locked with the tool of, the tool can be left as it is on the spool side and the winding work can be started, and in the hook hole opened in the cylindrical winding drum of the spool, A winding start end hooking device for a wire rod in a winding machine, wherein a winding start end of a wire rod is inserted and locked from the outside, and a spool is rotated by a spool holder to wind the wire rod around a winding drum of the spool. The winding start end of the wire rod that penetrates the axial direction and advances along the inner surface of the spool winding body and is inserted into the hook hole and protrudes into the cylindrical winding body is bent in the spool axial direction to form the inner surface of the spool winding body. Bending tool for temporary fixing by pressing Tool holder fixed to a tool holder and movably supporting the bending tool in the axial direction, and a tool driving mechanism that is detachably connected to the bending tool and moves the bending tool forward and backward in a constant stroke in the axial direction. Composed of and.

Operation In the above invention, when the winding start end of the wire rod is bent and locked in the locking hole of the spool by the bending tool, the bending tool is fixed while the winding start end of the wire rod is locked by the tool holder. And the tool driving mechanism is separated from the bending tool, so that the bending tool can be rotated integrally with the spool to perform winding, so that even if the wire is pulled during winding, the winding start end is folded. As it is locked by the bending tool, it will not come out of the spool.

Embodiment One embodiment of the present invention will be described below with reference to the drawings.

In the figure, (1) is a spool, and disk-shaped flanges (3) and (3) are integrally provided on the outer circumference of both ends of a cylindrical winding cylinder (2),
One end of the winding drum (2) contacts the root of the flange (3) 1
One hook hole (4) is formed therethrough. (5) and (5 ') position the spool (1) and both flanges (3) and (3)
Is a spool holder for concentrically sandwiching and closely contacting the spool (1) during winding and rotating integrally. Reference numeral (6) is a rotary shaft of an automatic winding machine for rotating the spool holders (5) and (5 '). (7) is a bending tool that axially penetrates a part of one spool holder (5), and (8) is fixed to the spool holder (5) so that the bending tool (7) can be moved in the axial direction. It is a tool holder to support. The bending tool (7) moves forward and backward by a constant stroke in the axial direction at a position where the hooking hole (4) is formed on the inner peripheral surface of the winding drum (2) of the spool (1). A tool driving mechanism (9) is detachably connected to the bending tool (7) to move the bending tool (7) forward and backward.

A specific example of the bending tool (7) will be described with reference to FIGS. 3 to 6, which is formed on the spool holder (5) and the flange (3) positioned and joined to the spool holder (5). It is inserted in a series of through holes (10) (10 '). Furthermore, the tip is held in a fixed position where it retracts from the flange (3) except during the winding operation, and the tip (7a) is located inside the flange (3) only during the winding operation as shown in FIG. It is held in place by projecting to. To hold the forward position and the backward position of the bending tool (7), for example, as shown in FIG. 3, V grooves (11) (11 ') are formed at two positions in the center of the bending tool (7). Then, this V groove (11) (11 ')
Ball plunger (1) embedded in the tool holder (8)
The tool is also positioned by elastically fitting 2). Further, a long groove (13) is formed in the center of the bending tool (7) in the axial direction, and the tool holder (8) is formed in this long groove (13).
The screw (14) screwed onto the screw is fitted to prevent the bending tool (7) from rotating. Tip of bending tool (7) (7a)
When advancing, the surface of the spool (1) facing the retaining hole (4) is a flat surface, and a taper groove (15) is formed in the flat surface in the axial direction. The taper groove (15) is set to a size and shape in which the wire rod (16) inserted from the outside into the retaining hole (4) fits. The rear end portion (7b) of the folding tool (7) always projects from the spool holder (5), and the rear end portion (7b) is formed with a notch groove (17) in the radial direction.

Next, the tool driving mechanism (9) will be described with reference to FIG. 2. (18) is a bracket fixed upright on the fixing base (19), and (20) is fixed to the bracket (18). Bearing (2
A lever that is swingably supported on the shaft (22) of 1) extends vertically and swings toward the spool holder (5). (23) is fixed to bracket (18) and lever (2
The first cylinder that swings (0) with its lower part, (2
4) is an arm whose central part is supported by a shaft (25) pivotally attached to the upper end of the lever (20) and swings in a plane parallel to the spool holder (5) about the shaft (25) as a fulcrum. To do. (26) is a second cylinder fixed on the bracket (18) to swing the arm (24) with its lower part, and (27) is an arm (24).
With a pin protruding from the upper end of the arm, the arm (24) swings to move into and out of the notch groove (17) of the bending tool (7).

Next, the winding operation according to the above embodiment will be described.

First, use the spool holder (5) (5 ') to spool (1)
Position and pinch. At this time, the bending tool (7) is in the retracted position, and the tool driving mechanism (9), for example, fits the pin (27) of the arm (24) into the notch groove (17) of the bending tool (7) in the retracted position. It is supposed to be worn.
In this state, insert the wire (1) into the hook hole (4) of the spool (1).
Insert the winding start end of 6) as shown by the chain line in Fig. 4.
Although not shown, this insertion is automatically performed using a wire rod insertion guide.

Next, the rear end of the lever (20) is pushed out by the first cylinder 23, and the upper end of the lever (20) is moved inward by a constant stroke together with the arm (24). Then the arm (24) pin (2
7) is fitted in the notch groove (17), the bending tool (7) moves forward through both of them, and the tip portion (7a) is locked as shown in FIG. The winding start end of the wire rod (16) that has sunk under the hole (4) and is inserted into the hook hole (4) at this time fits into the taper groove (15), and the hook hole (4) serves as a fulcrum. Then, the tip end (7a) of the folding tool and the inner peripheral surface of the winding drum (2) are finally sandwiched and locked. When the advance of the bending tool (7) is completed, the lower end of the arm (24) is then pushed out by the second cylinder (26), and the tip of the arm (24) is bent as shown in FIG. 7), and the pin (27) is pulled out from the notch groove (17) in the radial direction. Then, when the spool (1) is rotated by the spool holders (5) and (5 ') while maintaining the state of FIG. 6, the wire rod (16) is bent at the hooking hole (4) and the winding start end is a bending tool. (7)
Since it remains locked at, it is wound around the spool (1) without worrying that it will come off the hook hole (4).

When this winding is completed, the spool holders (5) and (5 ') are stopped at a fixed position at the beginning of winding, and the arm (24) is first reversed by the second cylinder (26) to make the pin (27) a notch groove ( 17) and then reverse the lever (20) with the first cylinder (23) to retract the bending tool (7) through the arm (24) and return it to its original position.

The present invention is not limited to the above embodiment, and the tool driving mechanism may be changed to one using cam driving or electromagnetic driving.

EFFECTS OF THE INVENTION According to the present invention, the winding start end of the wire rod is bent and locked by the bending tool in the retaining hole of the spool, so that the wire rod comes off the spool even when a strong tensile force is applied to the wire rod during winding. There is no need to worry, the operating rate of the automatic winding machine can be improved, and it is especially effective for wire rods with a weak waist. In addition, since the bending tool bends the winding start end of the wire rod inward of the spool winding cylinder, when carrying the spool around which the wire rod is wound, it is safe because fingers do not touch the winding start end of the wire rod. .

[Brief description of drawings]

1 and 2 are a side view and a front view showing an embodiment of the present invention, FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. 1, and FIG. 4 is a B- of FIG. Sectional views taken along line B, FIG. 5 and FIG. 6 are sectional views for explaining the operation of the bending tool of FIG. (1) ... spool, (2) ... winding drum, (4) ... retaining hole, (5) (5 ') ... spool holder, (7) ... bending tool, (8) ... Tool holder, (9) …… Tool driving mechanism, (16) …… Wire material.

Claims (1)

[Claims] 1. A winding machine that winds a wire rod by sandwiching a spool having a hooking hole for inserting the tip of the wire rod in a spool winding cylinder with a spool holder and rotating the spool rod to axially penetrate the spool holder. Then, a tool that moves forward and backward along the inner peripheral surface of the spool winding cylinder, a tool holder that is fixed to the spool holder and movably supports the tool in the axial direction, and a tool that is detachably connected to the tool A tool driving mechanism that allows the tool to move forward and backward, wherein the tool has a flat surface facing the retaining hole, and a distal end portion in which a taper groove is formed in the flat surface in the flat surface; A winding start end hooking device for a wire rod, which has a central portion provided with a positioning means for holding the forward and backward positions of the wire rod, and a rear end portion provided with a detachable connecting means which always projects from the spool holder. .