JPS585043B2 - Method for manufacturing laces or shoelaces - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for mechanically winding and attaching a hard tip to the tip of a shoelace or lace to create a lace of a certain length.

Conventionally, this type of lace is made by cutting the string material to a predetermined length in advance, and then manually wrapping reinforcing metal fittings such as celluloid or brass around both ends of the string. However, the process was extremely inefficient, and the drawback was that the quality of the product was particularly inconsistent. Therefore, the timing of each step of drawing out the string and winding and cutting the metal plate was adjusted relative to each other. Recently, methods have been proposed that involve a series of combined mechanical devices.

However, although this method has a simple process and is easy to standardize in terms of quality, since each process is performed in series using separate equipment, timing problems such as expansion and contraction of the string, slackness, and rotational inconsistency may occur. There were difficulties in fitting the parts together, and the products were inevitably inconsistent.

Furthermore, since it is difficult to match the timing in this manner, it is virtually impossible to carry out each process with one mechanical device, and it is also uneconomical in terms of installation space.

In view of the above-mentioned circumstances, the present invention eliminates these drawbacks, makes it possible to carry out all of the above steps automatically and with a single mechanical device, and streamlines production, including reducing labor costs. This method utilizes a pair of strap hanging frames having a plurality of hanging rods arranged oppositely at a required interval, and rotates the opposing hanging rods with a phase shift, making each rotation a cycle. Hanging the string consists of a passing operation, an operation of wrapping non-ferrous thin plates such as brass at regular intervals around the string, an operation of cutting the string together with the string at the center, and an operation of releasing the cut string. It is characterized by automatically repeating a series of operations in sequence and at the same timing.

Hereinafter, specific embodiments of the manufacturing method of the present invention will be further described in detail.

FIG. 1 shows a mechanism for guiding the string that becomes the raw material in the method of the present invention. In the figure, 1 is a crank, 2 is a drive wheel, and 3 is the drive wheel 2 and guide rolls 4, 5, 6. Although not shown, the crank 1 converts the internal rotation into semicircular rotation of the drive wheel 2, causing the endless chain 3 to reciprocate, and fixing the metal fitting 7 at one point. By doing so, the string that is being let out is reciprocated, and the string 9 is successively and continuously passed to the tip of the string hanging frame 8 shown in FIGS. 3 and 4 in a deformed U-shape.

As shown in FIG. 3, the strap hanging frame 8 is formed by a plurality of hanging rods 10, four hanging rods in the figure, extending outward from the core member 11, as shown in FIG. The two pieces are coaxially fixed at a required distance from each other, and can be rotated by an appropriate drive source (not shown).

In addition, as shown in FIG. 2, this string hanging frame 8 is equipped with an iron frame 12 for hanging the string separately from the mounting frame 8 in order to stabilize the passing.
is provided adjacent to the inside, and a total of 16 pairs of scissors 13 that can be opened and closed, two for each end of the hanging rod of the string hanging frame 8, a total of 8, are installed, so that the strap hanging frame 8 can be opened and closed. The string guided by the rotation is continuously connected to the tip of the hanging rod of the frame 8 and the scissors 13.
The hook is passed through the hook in a deformed U-shape, and the scissors 13 are closed to fix the string, and then the string is rotated to the position where the next thin plate of non-ferrous metal such as brass is to be wound.

FIGS. 4 and 5 illustrate the condition in which such a string is passed.

In this case, by changing the interval between the pair of string hanging frames 8, the length of the binding string etc. can be adjusted as appropriate.
Set the spacing in advance to suit the length of the string.

In this way, the hook that has been rotated to the second position to wind the thin metal sheet is attached to the passed cord, and then the winding device A installed at the position places the hook at a certain point, that is, a pair of strap hooks. A thin non-ferrous metal plate such as brass is wrapped around the frame at approximately the middle position as shown in Figure 5.
The basic structure of this winding device A is the same as that of conventionally known devices, and the required thin metal sheet 14 is, for example, a strip-shaped thin sheet with a width of about 10 to 60 mm and a thickness of about 0.1 mm, depending on the product set. It is cut to a length of about 7 μm, sent out in accordance with the moving speed of the string, and wrapped around the string using a pair of winding dies consisting of a clamping die and its receiving die.

FIG. 6 shows an example of a device for winding the thin plate 14 around such a string, in which the non-ferrous metal thin plate 14 fed out from below is placed between a clamping mold 15 facing the receiving mold 15 and A mode in which the material is clamped by a clamping mold 16 that moves toward the mold at any time is clarified.

The structure of the clamping pressure receiving mold 15 and the clamping mold 16 is, for example,
The structure is described in Japanese Patent No. 7-6235, and the moving clamping die 16 cooperates with the base 17 to press the thin metal plate 1.
4 into appropriate lengths, for example around 7 mm, as described above,
This is moved toward the receiving mold 15, and at that position, the hook is pressed so as to wrap around the string 9 that is being passed, and tightly wrapped.

Numeral 18 is a groove for assisting the thin plate 14 to wrap around the string 9 during winding.

Then, at the same time as winding the clamping mold 15 and the clamping mold 16.
The cutting blade as shown in Figs. 8 and 9 operates, and the thin plate 1
Cut the cord with 4 sandwiched in the middle.

At the same time as winding, after the cutting blades a, b, c, and d attached to the clamping die for winding are fixed, one of the movable blades is fixed.
The cutting blade d moves several mm from the other cutting blades a and c, making it possible to perform substantially simultaneous cutting. A lace or shoelace 19 is constructed by winding the laces or shoelaces 19.

The thus cut laces or shoelaces 19 are stored in a receiving frame (not shown) at a subsequent position during rotation and are carried to the subsequent process, but the receiving frame is placed in a position where the laces or shoelaces reach a predetermined quantity. Preferably, the position is then automatically changed and replaced.

A completed product such as a lace or shoelace is formed by letting out the string material as a material in an upward direction, but the operations during this time are performed in a sequential manner, and the lace hanging frame 8
One step is completed in one rotation of the cord, and from then on, the string hanging frame 8
It is possible to automatically and continuously produce products with one rotation as one cycle.

As described above, according to the manufacturing method of the present invention, it is possible to carry out each process necessary for completing the product at each position during the rotation of the strapping frame, so that each separate machine Not only can it be arranged compactly without requiring any equipment, reducing the installation space of the machine, but the process is extremely efficient, and the length of the string is reliably regulated by the string hanging frame. This makes it possible to automatically obtain products of a certain length and quantity, and together with improving product value through uniform quality and reducing labor costs through process rationalization, it has several excellent practical effects. It is something to play.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an example of a mechanism for guiding the material string in the method of the present invention, and Fig. 2 is an explanation showing how the string is passed, which is the first step of the method of the present invention, together with a string hanging frame, etc. 3 is a side view showing the mode of the strap hanging frame and iron frame used in the method of the present invention, FIG. 4 is a perspective schematic view showing the mode of strap hanging, and FIG.
The figure is a schematic diagram showing the wrapping and cutting position of the passed cord.
The figure is a schematic view showing an example of a winding and cutting mechanism, FIG. 1 is a cross-sectional view showing a part of the finished product, and FIGS. 8 and 9 are explanatory views showing the mode of cutting. 8...String frame, 9...Material string, 10
...hanging rod, 12... iron frame, 13...
... scissors, 14 ... thin metal plate, 15 ...
・Pinch type, 16...Pinch type, 19...
・Product group, A... Clamping device.

Claims (1)

[Scope of Claims] 1. A pair of strap hanging frames having hanging rods arranged oppositely at a required interval are rotated once while the opposing rods are rotated out of phase. Kake is an operation in which the string is sequentially deformed and passed to the opposing hanging rods with the movement as a cycle, and a thin plate of the specified width is rolled up at a certain point between a pair of opposing string hanging frames of the passed string. At the same time, the operation of cutting the wound thin plate together with the string at the center of the thin plate winding part and the operation of releasing the cut string are automatically repeated at a series of timings, and both ends are cut. 1. A method for manufacturing laces or shoelaces, which comprises continuously producing a string of a certain length around which a thin plate is wound. 2. A method for manufacturing a lace or shoelace according to claim 1, in which the string passed through the hanging rod is stably held by the iron parts of each iron frame provided inside each of the pair of lace hanging frames. . 3. The method for manufacturing a binding lace or shoelace according to claim 2, wherein the number of iron parts of the iron frame is twice the number of hanging rods of the lace hanging frame. 4. A method for making a lace or shoelace according to claim 1, 2 or 3, wherein the length of the lace is adjusted by changing the interval between a pair of opposing lace hanging frames. 5. Claim 1, in which the operations of wrapping a thin plate around a string and cutting the wrapped thin plate together with the string from the center of the thin plate winding part are performed in one step by combining a cutting blade with a thin plate winding type. 2. A method for manufacturing a lace or shoelace according to item 2, item 3, or item 4. 6. A method for manufacturing a lace or shoelace according to any one of claims 1 to 5, wherein the laces cut from the center of the thin plate winding part are sequentially discharged and stored in a receiving frame. 1. The method for manufacturing a lace or shoelace according to claim 6, wherein the receiving frame automatically changes its position and is replaced when the number of laces housed therein reaches a predetermined number.