JPH01222912A - Method for molding article supplying member - Google Patents

Abstract

PURPOSE:To enable an elongate article supplying member equipped with a number of articles to be performed with a die molding by joining integrally the first and second article supplying member into one body such that the fitting part of the first article supplying member, and subsequently the other end of the article supplying member part to be performed with die molding are inserted into the cavity part of a defined molding die. CONSTITUTION:In a state of the cavity 20 which is opened all over the surface, the shaft parts 14b of corresponding vises 14 are inserted respectively into the through holes 20e. An upper die 18 and a lower die 16 are put together, and the side part thereof is closed by an auxiliary die 22. A molten resin 24 is injected into the cavity 20 via a gate. The molten resin within the cavity 20 is cooled and cured. After the operation of die separation, the shaft parts 14b of the vises 14 are inserted respectively into each through hole 20e. The fitting part of 10a1 of the first tape part 10a is inserted into the cavity 20 of a molding die 12, and the open end surface of the second cavity part 20d is closed. As the same manner as the first die operation, the molten resin within the second cavity 20 is cooled and cured. The vises supplying tape 10 is produced wherein the tape part 10a and the second tape part 10b are integrally joined into one body.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to an article supply material forming process in which a long article supply material integrally provided with at least (n+m) articles insert-molded is molded. Regarding the method.

[Prior Art] Conventionally, as a technology for manufacturing a long screw supply tape with a large number of screws supported, for example,
As shown in Japanese Patent No. 178359, a large number of long holes in corrugated paper are each defined as a screw insertion hole, and by inserting and supporting a screw into each screw insertion hole, a long screw supporting a large number of screws can be supplied. It is known to make tape.

Here, since the length of this cardboard is quite long, it is necessary to support a number of screws that can sufficiently correspond to the number of screws required in the normal screw tightening process on one screw supply tape. This is something that can be done.

[Problems to be Solved by the Invention] However, when corrugated paper is used as a screw supply tape in this way, there are problems in this case because the paper itself is easy to tear and the size of the elongated holes is not accurately specified. There is a problem in that it is not possible to accurately define the posture of the screw inserted and supported by the screw, and it is difficult to reliably remove the screw.

Therefore, it is conceivable that the screw supply tape be made of, for example, synthetic resin, and that a large number of screws be molded using insert molding technology.

By molding and forming the product in this way, it becomes sufficiently difficult to tear compared to paper, and each screw is manufactured in a state in which it is in close contact with the screw supply tape, and the mounting position is precisely regulated. That will happen.

However, when molding a screw supply tape from synthetic resin using such insert molding technology,
Its length is limited by the width of the mold, making it difficult to manufacture a long screw supply tape. On the other hand, for example, if the width of the mold is set to be long and the screw supply tape is made to be long, the manufacturing cost of the mold becomes extremely high, making it uneconomical.

This invention has been made in view of the above-mentioned problems, and an object of the invention is to produce a long article comprising a large number of articles using insert molding technology without increasing the production cost of molds. It is an object of the present invention to provide a method for forming an article supply material by which a supply material can be molded.

[Means for Solving the Problems] In order to solve the above-mentioned problems and achieve the objectives, the article supply material forming method according to the present invention provides at least (n+m)
In an article supply material forming method in which a long article supply material integrally provided with insert molded articles is molded, one and the other fittings that can be fitted complementary to each other at one end and the other end are used. a first step of molding a first article supply material portion with n articles, and a first step of mold-forming the first article supply material portion molded in this first step; a second step of inserting the fitting portion into a cavity portion of the mold defining the other end of the article supply material portion to be molded next, and closing the cavity portion; With the second article supply material section connected to the mold, the second article supply material section is molded with m articles, and the fitting part of the first article supply material section and the second article supply material section are molded. (
The method is characterized by comprising a third step of molding an article supply material having n+m) articles.

[Example] Hereinafter, an example of the method for forming an article supply material according to the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 1 shows a screw supply tape 1 as an article supply material manufactured by the article supply material forming method according to the present invention.
1 schematically shows the configuration of a mold 12 for molding 0.

This mold 12 is for insert molding a screw 14 as an article, and as shown in the figure, it has a lower mold 16 as a fixed mold, an upper mold 18 as a movable mold, and as described later, It basically includes an auxiliary mold 22 that releasably closes the open end of a cavity 20 that defines a molded product. Note that the screw 14 has a head 14a and a head 14.
The shaft portion 14b is integrally connected to the shaft portion a.

The upper die 18 is configured to move up and down toward and away from the fixed lower die 16 via a drive source (not shown). Then, with the upper mold 18 joined to the lower mold 16, the lower mold 1 is opened so that a cavity 20 is formed inside.
6 and the upper mold 18 have recesses 16a and 18.
a are formed respectively.

The cavity 20 is configured to define the outer shape of the screw supply tape portions 10a, 10b, . There is. That is, this cavity 20 includes a plurality of, for example, ten, cylindrical cavity parts 20a formed to surround the shaft part 14b of the screw 14 to be inserted, and a connection cavity that communicates the mutually adjacent cylindrical cavity parts 20a with each other. 20b, and a first end cavity portion 20c located outside (left side in the figure) and connected to the cylindrical cavity portion 20a on one end side (left side in the figure) to define one end of the cavity 20. , and a second end cavity part 20d that is located outside (on the right side) and connected to the cylindrical cavity part 20a on the other end side (on the right side in the figure) to define the other end of the cavity 20. ing.

Here, in a state where the lower mold 16 and the upper mold 18 are joined to each other, the first end cavity portion 20c of the cavity 20 is connected to the first fitting portion 10 of each molded product 10a, 10b, .
al , 10b+ , . . . are respectively defined and closed. On the other hand, the second end cavity portion 20d is open laterally. During the first injection molding, the aforementioned auxiliary mold 22 is connected to close the open end surface of the second end cavity 20d.

In this way, with the cavity 20 completely closed by the auxiliary mold 22, the first injection is carried out in order to mold the first molded product, that is, the first screw supply tape portion 10a, as will be described later. A molding operation is performed. Note that this auxiliary mold 22 is removed and not used in the second and subsequent injection molding operations.

On the other hand, a through hole 20e is formed in one end surface defining each cylindrical cavity portion 20a, through which the shaft portion 14b of the base 14 is inserted. In addition, the first
The end cavity portion 20c is connected to the adjacent cylindrical cavity portion 20a, and is connected to the aforementioned connection cavity portion 20b.
A first cavity portion 20c is set to have the same height and a slight width as the connecting cavity portion 20b.
The second connection cavity portion 20b has a height approximately half that of the connection cavity portion 20b and a width approximately equal to the width of the connection cavity portion 20b.
It is composed of a cavity portion of 2 Oct. Here, the surface portion of the upper die 18 that defines the upper surface of the second cavity portion 20c2 is formed in a so-called jagged shape.

Here, as described above, the first end cavity portion 20c
has the first cavity portion 20c+,
The first screw supply tape portion 10a is formed and the mold 1
2, when molding the second screw supply tape portion 10b, the first fitting portion 10a of the first screw supply tape portion 10a is removed from the second end of the cavity 20. In the first fitting part 10a, when inserted into the cavity part 20d, the part defined by the first cavity part 20c+ described above is
The open end surface of the second end cavity portion 20d is completely closed.

A molding method for manufacturing the long screw supply tape 10 as shown in FIG. 6 using the mold 12 configured as described above will be explained in detail with reference to FIGS. 2 to 5. First, a method for insert molding the first molded product, that is, the first screw supply tape portion 10a, will be explained.

In this insert molding, first, although not shown, the upper mold 18 is lifted upward from the lower mold 16, and with the cavity 20 completely open, ten through holes 2 are inserted.
2e, respectively insert the corresponding shaft portions 14b of the screws 14. After that, the upper mold 18 is lowered and joined to the lower mold 16,
As shown in FIG.
2, the cavity 20 is completely closed.

Thereafter, the spool and runner (not shown) are sequentially edged, and the molten resin 24 is injected into the cavity 20 through the gate. As shown in FIG. 3, after the cavity 20 is completely filled with the molten resin 24, the injection operation is stopped, at least the surrounding area of the cavity 20 of the mold 12 is cooled, and the cavity 20 is completely filled with the molten resin 24. The molten resin inside is cooled and solidified. In this way, the molten resin 24 is cooled and
In the solidified state, the first screw supply tape portion 10a in which ten screws 14 are integrally insert-molded is injection molded.

Thereafter, the upper mold 18 is lifted from the lower mold 16, and the first screw supply tape portion 10a as a molded product is released from the mold 12.

After this mold release operation, an insert molding operation of the second screw supply tape portion 10b as the second molded product is performed.

That is, in the molding operation of the second screw supply tape portion 10b, first, as described above, after the mold release operation of the first screw supply tape portion 10a, the upper mold 18 is moved to the lower mold 1.
6, insert screws 1 into each through hole 20e.
4. Insert the shaft portion 14b. Then, the upper mold 18 is lowered and joined to the lower mold 16, and as shown in FIG. second end cavity part 2 of
Insert into Od.

As a result, the first
Specifically, in this first fitting part 10a+, the first cavity part 20c+
The open end surface of the second cavity portion 20d of the cavity 20 is closed by the portion defined by. In addition, in this inserted state, the inserted first fitting portion 10aI
The space in the second end cavity part 20d excluding the second fitting part 10b of the second screw supply tape part 10b
A cavity portion defining Z will be defined.

After this, in the same way as the first molding operation, the molten resin 2
4 is injected into the cavity 20. As shown in FIG. 5, after the cavity 20 is completely filled with the molten resin 24, the injection operation is stopped, at least the surrounding area of the cavity 20 of the mold 12 is cooled, and the cavity 20 is completely filled with the molten resin 24. The molten resin inside is cooled and solidified.

In this state where the molten resin 24 is cooled and solidified, the second screw supply tape portion 10b, in which the ten screws 14 are integrally insert-molded, is injection molded.

Here, the second fitting portion 10b2 of the second screw supply tape 10b molded with this mold 10 is
It is in a state where it is integrally joined to the first fitting portion 10a+ of the first screw supply tape portion 10a connected to the first screw supply tape portion 10a.

This is the first fitting part 10al (10bl) and the second fitting part 10al (10bl).
The fitting portions 1Oa2 (lOb2) of the molded article 10a2 (lOb2) are formed in a jagged shape complementary to each other, and in the process of molding the second molded product 10b, the second fitting portion 10b2 of the second molded product 10b is defined. Second end cavity portion 20d
When the molten resin is injected, the first fitting part 10a+ connected here is partially melted by the heat of the molten resin, and as a result, the first fitting part 10a+ of the first screw supply tape part 10a is partially melted. This is because the first fitting portion 10a+ and the second fitting portion 10bz of the second screw supply tape portion 10b are welded to each other.

By releasing the molded second screw supply tape portion 10b from the mold 12 in this way, as shown in FIG. 6, the first screw supply tape portion 10a and the second screw supply tape are separated. The portion 10b is the first fitting portion 1 of the former
A screw supply tape 10 is manufactured which is integrally joined with the second fitting portion 10b and the latter second fitting portion 10bt. As is clear from the above description, this screw supply tape 10 integrally includes 20 screws 14 (10 screws + 10 screws) in an insert-molded state.

Incidentally, at the time when each screw supply tape portion 10a, 10b is injection molded, a sprocket is attached to a portion defined by each connection cavity portion 20b, although not explained in detail, as shown in FIG. A hole 26 is formed therein.

As detailed above, in this embodiment, when manufacturing the screw supply tape IO using one mold 12, one injection molding operation of this mold 12 produces 10
First screw supply tape section 10a with book screws 14
However, as mentioned above,
When injection molding the second screw supply tape portion 10b, by connecting the pre-molded first screw supply tape portion 10a to the mold 12, the second screw supply tape portion 10b is injection molded. At this point, a screw supply tape 10 integrally joined with this connected first screw supply tape portion 10a is manufactured. In this screw supply tape 10, a total of 20 screws 14 provided in the first and second screw supply tape portions 10a and 10b are attached.

By repeating the above manufacturing method, theoretically, a screw supply tape of infinite length can be manufactured.

In this way, in this embodiment, one mold 1
By repeatedly using 4, a long screw supply tape 10 can be manufactured extremely easily.

In other words, the length of the cavity 20 in the mold 12 is a predetermined finite length, so that manufacturing costs can be kept low.

Furthermore, in this embodiment, the screws 14 provided thereon are integrally connected to the tape, so that the mounting state is maintained stably, and the mounting posture is as follows. The screws 14 are maintained accurately and constantly, and the operation for taking out the screws 14 can be performed reliably and easily.

It goes without saying that this invention is not limited to the configuration of the one embodiment described above, and can be modified in various ways without departing from the gist of the invention.

For example, in the embodiment described above, the number of screws 14 used in the first insert molding operation and the number of screws 14 used in the second insert molding operation are described as being the same. The number of screws 14 used in each molding operation may be set to be different.

Furthermore, in the embodiment described above, it was explained that the type of screw 14 used in the first insert molding operation and the type of screw 14 used in the second insert molding operation are the same. The screw 14 used in each molding operation is not limited to
The types may be set differently.

Further, in the embodiment described above, the joint surface of the fitting portion is described as having a jagged shape, but the joint surface is not limited to this, and may be flat.

[Effects of the Invention] As detailed above, the article supply material forming method according to the present invention molds a long article supply material integrally provided with at least (n+m) articles in a state of insert molding. In the article supply material forming method, a first article supply material portion is formed by having n articles with one end and the other end having fitting portions that can be fitted complementary to each other. A first step of molding, and a mold that defines the fitting portion of the first article supply material portion molded in this first step and the other end of the article supply material portion to be molded next. A second cavity is inserted into the cavity to close the cavity.
step, and with the first article supply material part connected to the mold by this second step, having m articles,
The second article supplying material portion is molded, and the fitting portion of the first article supplying material portion and the other end of the second article supplying material portion are integrally joined to each other, and (n+m) articles are formed. The method is characterized by comprising a third step of molding an article supply material comprising:

Therefore, according to the present invention, there is provided an article supply material that can be molded into a long article supply material having a large number of articles using insert molding technology without increasing the manufacturing cost of the mold. A molding method will be provided.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing the configuration of a mold for carrying out an embodiment of the method for molding article supply materials according to the present invention; FIGS. 2 to 5 show an example of the method for molding article supply materials according to the present invention; FIG. 6 is a front sectional view showing the sequence of operations; and FIG. 6 is a perspective view showing the configuration of the article supply material manufactured by this molding method. In the figure, 10... screw supply tape, 10a... first molded product (first screw supply tape portion), 10b...
Second molded product (second screw supply tape part), 10
a+; 10b+ - first fitting part, 10az
;10bz...second fitting part, 12...molding mold, 1
4... Screw, 14a... Head, 14b... Shaft,
16...lower mold, 16a...recess, 18...upper mold,
18a... recess, 20... cavity, 20a...
・Cylindrical cavity part, 20b... connection cavity part,
20c...first end cavity part, 20c+...
First cavity part, 20C2... Second cavity part, 20d... Second end cavity part, 20e
... Through hole, 22 ... Auxiliary mold, 24 ... Molten resin,
26...Sprocket hole. Patent applicant Canon Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] (1) In an article supply material forming method in which a long article supply material integrally provided with at least (n+m) articles insert-molded is molded, n articles are integrally provided with a fitting part at one end. a first step of molding a first article supplying material portion with an article; and a second step of molding the fitting portion of the first article supplying material portion molded in this first step. a second step of inserting the other end of the first article supply material portion into a defining cavity of the mold to close this cavity; and a second step of inserting the first article supply material portion into the mold. A second article supplying material section is molded with m articles in a state connected to the fitting part of the first article supplying material section and the other end of the second article supplying material section. and a third step of molding an article supply material comprising (n+m) articles in a state in which the articles are integrally joined to each other.