JPS6059137B2 - Core material supply method and device for manufacturing coiled fastener elements with core material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for supplying a core material in the manufacture of a coiled fastener element in which a core material is inserted. The object of the present invention is to provide a feeding method and device for feeding core material into an element forming process in a non-stretched state, and a second object is to provide a feeding device that can adjust and regulate the amount of core material fed with a simple mechanism.

Conventionally known core material feeding devices of this type, such as those disclosed in Japanese Patent Publications No. 113-1972 and No. 4093-4093, swing from side to side in response to the vertical movement of the core rod holder. A core material guide roller is provided between the element forming mechanism and the core material storage section, and the core material is drawn out from the core material storage section by outward swinging of this core material guide roller. Since the back tension is applied and the core material is in an expanded state, and the core material is fed into the element forming mechanism in this stretched state, the amount of core material fed is not sufficient when forming the element.

In addition, since the core material is pulled out from the core material storage section by the outward swinging of the core material guide roller and by the rudder action, variations in the amount of core material drawn out tend to occur.

When a coiled fastener element containing a core material is attached to a tape by sewing means, the sewing thread generally passes through the core material, so the core material may meander or bulge due to the passage of the sewing thread and sewing needle, and the sewn core material Since it shrinks within the coil element, it is necessary to insert an amount that takes into account this amount of shrinkage into the element. Furthermore, in the prior art, since the core material is drawn out and fed in by vertical movement of the core rod holder, it is difficult to adjust the amount of core material fed.

For example, when the material, structure, etc. of the core material changes, the contact friction force between the core material and the inner wall of the core material guide hole changes, which may result in an excess or deficiency in the amount of core material fed. , it was difficult to make fine adjustments to adjust this excess and deficiency. This invention is
The present invention has been improved in order to eliminate the above-mentioned defects, and embodiments of the present invention will be described below with reference to the drawings.

A core material C is placed between the element forming mechanism 1 and the core material storage section 2.
A core material transfer mechanism 3 is provided for forcibly drawing out and transferring the core material from the storage section 2.

This core material transfer mechanism 3 is formed of a drive roller 4 and a pressure roller 5 that is in pressure contact with the drive roller 4. Gears 6 and 7 that mesh with each other are fixed to the drive roller 4 and the pressure roller 5, respectively. has been done.

Note that the pressure roller 5 is pivotally supported by an arm 9 whose one end is pivotally supported by the frame 8. A spring 10 is stretched between the other end of the arm 9 and the frame 8, so that the arm 9 is always urged toward the drive roller 4 and is configured to follow the drive roller 4. On the other hand, a ratchet wheel 12 is fixed to the shaft 11 to which the drive roller 4 is attached, and a swing lever 13 that swings in conjunction with the element forming mechanism 1 is also pivotally supported.

A ratchet 14 that engages with a ratchet wheel 12 is pivotally supported on the swing lever 13, and the swing of the swing lever 13 causes the drive roller 4 to be actuated intermittently. In this case, the rotational speed of the drive roller 4 is adjusted so that it rotates slightly faster than the element forming speed. Next, a fixed sleeve 15 is fixed to the frame 8, a sliding shaft 16 is fitted into the fixed sleeve 15, and a core rod holder 17 is fixed to the tip thereof. The core rod holder 17 and the sliding shaft 16 move forward and backward in synchronization with the operation of the screw 18 of the element forming mechanism 1. Furthermore, the sliding shaft 16
A guide hole 19 for guiding the core material C through the core rod holder 17 is bored inside the core rod holder 17, and in the case of the core rod holder 17, it communicates with a guide hole 19 bored in the center of the sliding shaft 16. A guide hole 19 is bored from the center of the holder 17 to the surface, then back to the center, and further along the core rod 20 to the top surface.

The guide hole 19 in this case is bent at an obtuse angle and is formed so as to generate contact friction with the guiding core material C. In the figure, 21 is a vibrator that guides the core material C from the core material transfer mechanism 3 to the guide hole 19 bored in the sliding shaft 16;
is the brake, and E is the fastener element.

The present invention has the above-mentioned configuration, and its operation is such that first, the core material C from the core material storage section 2 is conducted between the drive roller 4 and the pressure roller 5, and the required amount is forced by the operation of both rollers. Pull out and transfer. Next, the core material C passes through the guide vibe 21 and the guide hole 19 of the sliding shaft 16 that reciprocates.
is further guided to the guide hole 19 of the core rod holder 17, and is inserted into the element forming mechanism 1 from the top surface of the holder 17.
transported to. In the core material supplying means of the present invention, a transfer mechanism consisting of a drive roller and a pressure roller operates at a speed slightly higher than the element forming speed to forcibly draw out the required amount of core material, and the drawn core material is moved by a movable body. The core material is introduced into the guide hole of a certain core rod holder, and the core material is supported in the guide hole by the frictional force between the core material and the wall of the curved guide hole, and the core rod holder holding the core material is raised. Since the core material is fed into the element forming mechanism, the core material to be fed can be transported in a non-stretched state without any back tension being applied to the core material, and a necessary and sufficient amount of the core material can be supplied into the element.

Because the core material drawing process by the core material transfer mechanism and the core material transport process by the reciprocating movement of the core rod holder are separated,
The feeding amount of the core material can be easily adjusted in the core material drawing process.

Further, by adjusting the amount of core material drawn out in the core material drawing step, the amount of core material fed can be regulated accurately and without stretching, which has the advantage of allowing highly accurate core material supply.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a fastener element row, Fig. 2 is an explanatory drawing showing the process of this invention, Fig. 3 is a partial cross-sectional view of the main part showing an overview of the device, and Fig. 4 is a core material transfer. It is a front view showing a mechanism. 1... Element forming mechanism, 2... Core material storage section, 3... Core material transfer mechanism, 4... Drive roller, 5... pressure roller, 1
6... Sliding shaft, 17... Core rod holder, 19... Core material guide hole, C... Core material, E...
...Zipper element.

Claims (1)

[Claims] 1. A step of forcibly drawing out and transferring the core material at a speed slightly faster than the forming speed of the element, and furthermore, a step of forcibly drawing out and transferring the core material at a speed slightly faster than the forming speed of the element, and furthermore, a required amount of core material is not applied to the core material to be sent to the element forming step in an unstretched state without applying any back tension. A method for supplying a core material in the production of a coiled fastener element containing a core material, characterized by supplying the core material to an element forming process through a process of transporting the core material while securing the core material. 2. Between the element forming mechanism and the core material storage section, there is a core material transfer mechanism formed of a drive roller that rotates at a speed slightly faster than the element forming speed and a pressure roller that is pressed against the drive roller, and this core material A core rod holder that moves forward and backward in synchronization with the element forming mechanism is disposed between the transfer mechanism and the element forming mechanism, and a core material guide hole in which contact friction occurs partially is formed in the core rod holder. A core material supply device for manufacturing a coiled fastener element containing a core material. 3. The core material supply device according to claim 2, wherein the drive roller is connected to a ratchet mechanism that operates in conjunction with the element forming mechanism. 4. The core material supply device according to claim 2, wherein the core material guide hole is bent at an obtuse angle at several locations.