JPS5843744B2 - Locking piece group manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a group of locking pieces that is mainly used when attaching a price tag or other display tag to a product, or when connecting a plurality of articles. The present invention relates to an apparatus for manufacturing a group of locking pieces, which greatly reduces the manufacturing cost per locking piece and also facilitates handling.

A locking piece T made of a synthetic resin such as nylon and having a head 1 and a horizontal bar 2 connected by a filament portion 3 to form a generally H-shape as shown in FIG. 1 is already known.

As mentioned above, this locking piece T is often used mainly as a connecting piece when attaching a price tag or the like to a product.

To attach the locking piece T to a product, a group of locking pieces in which a large number of locking pieces T are connected in the thickness direction is inserted into a fixture having a needle with a C-shaped cross section, and then a price tag, etc. is passed through the needle. Penetrate the product with the needle.

Then, one locking piece is separated from the group of locking pieces, and the horizontal bar 2 of this locking piece is pushed into the needle, leaving the filament portion 3 bent so as to be parallel to the horizontal bar 2. Guide the horizontal bar 2 to the back side of the product, and when the horizontal bar 2 comes out from the needle, remove the needle from the product and price tag, etc., and the horizontal bar 2 and filament part 3, which were in a parallel state, will form a T-shape. It is possible to restore products and price tags, etc.

The locking piece T that can be attached in this way is attracting attention because it simplifies the process of connecting products and price tags using thread, which has been done for a long time, and is used in large quantities when attaching price tags to large quantities of clothes, etc. ing.

Therefore, there is a strong demand for good workability and low unit cost of the locking pieces, so by connecting a large number of locking pieces to one connecting member to form a locking piece group. This reduces the number of molding shots and makes handling of the locking piece convenient.

However, when a large number of conventional stop pieces are connected in a row in the thickness direction to form a locking piece group, it is necessary to widen the pitch between each locking piece due to molding problems.

That is, the group of locking pieces is molded using a mold, but unless a partition is provided between the cavities of each locking piece formed in the mold, it is not possible to mold each locking piece independently. .

Therefore, since it is absolutely necessary to secure the outside of this partition, the pitch between each locking piece after molding is generally
The length is the thickness of the thick head or horizontal bar plus the thickness of the partition wall.

In this way, the pitch between each locking piece of the locking piece group is determined,
Further, if the respective locking pieces are connected by a connecting member, the following problems arise.

(1) Since it is not possible to obtain the strength of about 50 to 60 locking pieces in one locking piece group, the number of times the locking piece group is inserted into the fixture increases, resulting in poor workability.

(2) A group of locking pieces is stored in a large number of boxes, so there is tightness between each locking piece; if it is wide, the 10 widths of the locking pieces will be intertwined, and it will take time to unravel this. It will cost.

(3) When the locking piece is separated from the locking piece group, the connecting member for connecting each locking piece becomes a residual material, which wastes material and increases the cost of the locking piece.

(4) Since the number of molded shots in the locking piece group increases, locking piece 1
The actual unit price is high.

This is because, considering that the unit price of the locking piece is in units of sen, the effect of an increase in the number of shots on the unit price is immeasurable.

Each of the above-mentioned problems is an extremely serious problem since the number of devices used is enormous, and solutions to these problems have been desired.

Therefore, the present invention was created as a result of intensive research after changing the way of thinking, and it is possible to connect an extremely large number of locking pieces continuously in a state where they are almost in contact with each other in the thickness direction, and to avoid wasting material. By preventing entanglement between the locking piece groups and reducing the number of times the locking piece groups are inserted into the fixture, the work efficiency of locking piece installation is improved, and the unit cost of each locking piece is reduced. It is an object of the present invention to provide a manufacturing device for a group of locking pieces that can be lowered.

In order to achieve this object, the present invention has a locking piece that connects a head and a correspondingly spaced horizontal bar with a filament part, and a locking piece that connects a number of locking pieces that can be separated in the thickness direction. A method for manufacturing a group of locking pieces, comprising: a device for forming a locking piece block having a cross section shaped like the locking piece; and a block guide body having a through hole into which the locking piece block is fitted. A device for manufacturing a group of locking pieces, comprising: a cutter arranged so as to substantially contact the exit end face of the locking piece; and a device for cutting the locking piece mass with a certain thickness leaving a portion of the locking piece mass with the cutter. It is.

Next, the present invention will be explained in detail with reference to the drawings, where each reference symbol is
The description will be made using the above-mentioned symbols as they are.

In FIG. 1, at the tip of the extruder 4, there is a die 5 for continuously extruding a locking piece mass TI made of synthetic resin, for example, nylon, and having a cross-sectional shape of the locking piece 1. It is attached.

In front of the die 5, a cutting device 6 for cutting the locking piece Tl with a portion left in the longitudinal direction is arranged. is provided.

The conveying device may be a normal conveyor device, and the cooling device may be water, oil, or air cooling, and water or oil cooling is preferable in order to enhance the cutting effect in a short time. .

The cutting device 6 will be explained with reference to FIGS. 1 to 3. The lump guide body 7 and the locking piece group guide body 8 are integrally fixed by bolts (FIG. 2) or the like.

Guide holes 9 and 10 in the shape of the locking pieces 1 are formed through the block guide body 7 and the locking piece group guide body 8.

A circular cutter guide groove 11 is formed in the mating surface of the lump guide body 7 with the locking piece group guide body 8, and a cutter 12 formed in a substantially circular shape is rotatably inserted into this cutter guide groove 11. It is fitted.

The position of the cutter 12 with respect to the guide hole 9° 10 is such that the rotation center O of the cutter 120 is located slightly closer to the horizontal bar 2 than the connection point between the horizontal bar 2 of the locking piece 1 and the filament portion 3. The cutter 1 faces the guide holes 9 and 10.
2 has a cutter groove 1 having the same size and shape as the guide holes 9 and 10.
3 is formed.

Therefore, when the cutter 12 rotates in the direction of arrow A-B as shown in FIG. It rotates around a position slightly closer to the horizontal bar 2 than the position corresponding to the point, that is, around the rotation center 0.

Further, the width of the cutter 120 is formed to be the same as the width of one locking piece 10 or the width of a plurality of locking pieces 10.

The cutter 12 formed in this manner is reciprocated in the direction of arrows A-B by an actuator (not shown) or the like via a connecting rod 14 that reciprocates in the direction of arrow C-D.

In order to align the cutter groove 13 of the cutter 12 with the guide hole 9.degree. 10, it is preferable to provide a positioning stopper on the lump guide body 7 and the like.

A stretching device 15 is located in front of the cutting device 6 formed as described above via a conveying device (not shown).

As shown in FIG. 1, this stretching device 15 includes a locking piece group'
A fixed bar 16 extends from the cutting device 6 in the direction of arrow E to support the lower side of the horizontal bar 2 at the left and right positions of the intersection of the horizontal bar 2 and the filament portion 3, serving as a guide bar for l'n and TN. As shown in FIGS. 1 and 4, along with the movement of the unstretched locking piece group Tn in the direction of arrow E, arrow G in FIG.
, H, and JKO, and are arranged at left and right positions of the intersection between the head 1 of the locking piece T and the filament part.
and an actuation device (not shown) for this.

In FIG. 1, a locking piece TI made of, for example, nylon is extruded from a die 5 and conveyed to a cutting device 6 by a conveying device (not shown).

During this process, the locking piece TI is cooled to a temperature at which it can be easily cut in a cooling device (not shown).

The locking piece mass TI transported while being cooled in this way
eventually reaches the cutting device 6, passes through the guide hole 9 of the lump guide body 7, and reaches the cutter 12.

Then, the lump guide body enters into the cutter groove 13 of the cutter 12, and when the lump guide body 7 enters to a point where the lump guide body 1 corresponds to the thickness of the locking piece T, it is connected by an actuator (not shown) or the like. Move the rod 14 in the direction of arrow C.

As a result, the cutter 12 rotates around the rotation center O, so as shown in FIG. An unstretched locking piece connected to the uncut portion is completed.

In this way, unstretched locking piece groups Tn that are releasably connected 18 by repeated cutting are continuously formed.

Next, when it is necessary to further stretch the filament portion of the unstretched locking piece group Tn continuously formed in this way, the unstretched filament portion moving in the direction of arrow E as shown in FIG. The extension bar 17 is located at the J position at the same speed as the locking piece group Tn.
while sending it in the direction of arrow E and lowering it in the direction of arrow F.

Therefore, the stretching bar 17 moves in the direction of the arrow, and as a result, the unstretched locking piece group Tn is stretched by a constant number while moving in the direction of the arrow E.

As a result, it is possible to manufacture the locking piece mass TI continuously and consistently from the locking piece group TN after stretching, and moreover, it is possible to produce a tight locking structure with almost no gaps between each locking piece T. Single group Tn or TN
can be created.

Note that the stretching bar 17 after stretching is G, as shown in FIG.
Moving in the order of H and J, the unstretched locking piece group Tn is continuously stretched.

Further, as shown in FIGS. 5 and 6, the cutter 12a for cutting the locking piece T1 may be of a rotary type as shown in the figures.

In this case, since the connecting portions 18a are formed at both ends of the horizontal bar 20, the completed locking piece group Tn or TN will not be twisted in the lateral direction, so when storing it or attaching the locking piece T to the article. During installation, there is no need for support due to the locking piece T jumping out to the side during work.

Further, as shown in FIGS. 7 and 8, the cutter 12b for cutting the locking piece mass TI is moved vertically as shown in the figure or transversely with respect to the locking piece mass TI. A cutter may also be used.

In this case, the connecting portion 18b may be formed on the side of the horizontal bar 2 opposite to the filament 30, and only this portion may be left uncut.

Note that the connecting portion 18b can also be applied to the embodiments shown in FIGS. 1 to 4 and the embodiments shown in FIGS. 5 and 6.

As described above, according to the present invention, a large number of locking pieces can be connected in a state that they are almost in contact with each other in the thickness direction, so entanglement between groups of locking pieces can be prevented, and a large number of locking pieces can be connected to one group of locking pieces. Since the locking pieces can be arranged in a row, the number of times the locking piece group is inserted into the fixture can be reduced.

Therefore, the attachment of the engagement +h piece can significantly improve work efficiency.

Further, since there is no need for a special member for connection like a conventional locking piece, materials can be saved.

[Brief explanation of drawings]

The drawings show an apparatus for explaining the present invention in detail, in which FIG. 1 is a perspective view, FIG. 4 is an explanatory diagram of the operation of the stretching device, FIG. 5 is a front view showing another embodiment corresponding to FIG. 2, and FIG. 6 is a sectional view taken along the line FIG. 7 is a front view of a cutting device showing still another embodiment, and FIG.
FIG. 7 is a sectional view taken along the line ■-■. 1...Head, 2...Horizontal bar, 3...
...Filament part, 4...Extruder, 5.
...Die, 6...Cutting device, T, γa,
7b...Lump guide body, 12°12a, 12b.
... Cutter, T ... Locking piece, Tn. TN...Latching piece group.

Claims (1)

[Claims] 1. A device for manufacturing a locking piece group in which a large number of locking pieces are connected to each other by a filament portion, each of which connects a head and a horizontal bar placed at a correspondingly distant position. W position for forming the locking piece shaped like a locking piece, and a lump guide body q having a through hole into which the locking piece is fitted; A device for manufacturing a group of locking pieces, comprising: a device for arranging a cutter, and using the cutter to cut the locking piece to a certain thickness, leaving a portion.