JPH04250010A - Injection molding method for packing vessel for battery - Google Patents

Abstract

PURPOSE:To automate easily from molding up to packing or crating by making a vessel moldable continuously, by a method wherein the vessel is molded into a sheetlike state, a tongue is formed on a sheetlike part and one side of the antecedent vessel and the tongue of the following vessel are joined to each other. CONSTITUTION:Synthetic resin is injected through a sprue 37 and filled into a cavity between both a male and female molds 31, 34 to injection-mold a packing vessel for a battery. Then the male mold 31 is separated from the female mold 34, a movable mold 38 is moved in the direction C and separated respectively from a protrusion 33 of the male mold 31 and a recessed part 36 of the female mold 34. The movable mold 38 is moved in the direction A in succession, a recessed part 39 of the movable mold 38 is confronted with a protrusion 32 of the female mold 31, a knockout pin 40 is ejected in the direction E, a molded vessel 10 is separated from the protrusion 32 and fitted into the recessed part 39. Then the movable mold is moved in the direction B and the vessel 10 is fitted into a space between the recessed part 36 and protrusion 33. Then the synthetic resin is refilled into the cavity and a sheetlike parts 11 of the vessels 10 each are connected with each other through a tongue 18.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding method for a battery packaging container for storing and holding batteries.

0002

[Background Art] To protect the electrode surface of the battery and make it easier to carry when the battery used as a power source for the electronic device is removed from the electronic device and carried, or when a spare battery is carried. Battery packaging containers are used in Furthermore, batteries are usually displayed at stores and the like while being housed in packaging containers.

FIG. 12 shows an example of a conventional packaging container of this type. In the figure, a cap 2 whose one side is openably and closably connected to the front surface of the container body 1 via a hinge portion 1b is provided in an opening 1a at the upper end of a container body 1 having a rectangular cross section. A hook portion 2a is integrally provided on the other side of the cap 2, and by locking this onto the rear surface of the container body 1, the cap 2 closes the opening portion 1a. Further, a hanger part 3 is connected to the upper part of the cap 2, and a locking hole 3a is formed in the hanger part 3. This locking hole 3a is a hole on which a display rod or the like is hung when storing the battery and displaying it on a display shelf or the like.

[0004] On the other hand, conventional packaging containers constructed as described above are each formed into a box shape by injection molding. After confirming the quantity, these containers are placed in returnable boxes and sent to a packaging factory, where workers manually insert batteries into the containers along with instruction manuals. In addition, the work of wrapping the container into which batteries and the like were inserted using a shrink sheet, etc., and then packing the container into a carton or the like was also performed manually.

[0005]

[Problems to be Solved by the Invention] As mentioned above, conventional battery packaging containers were formed into box shapes one by one, which resulted in poor workability during injection molding and increased costs due to the large size of the mold. There was a problem. Furthermore, if the thickness of the battery changes, the container must also be changed, and many types of molds are required. Furthermore, since the empty box has a large volume while the battery is in use, it takes up unnecessary space in a carrying bag or the like.

[0006] On the other hand, since conventional containers are molded individually one by one, there is a problem in that it takes time and effort to confirm the quantity, transport, and store them. In addition, it is difficult to insert the battery into the container, wrap it, and automate packaging, and since the battery is inserted manually, the inserted battery may be bent or turned inside out, resulting in packaging defects. There was also the problem.

The present invention has been made in view of the above points, and can improve the workability of injection molding, easily automate everything from molding to packaging, and reduce costs. An object of the present invention is to provide a method for injection molding a battery packaging container.

[0008]

[Means for Solving the Problems] The injection molding method for a battery packaging container of the present invention is a method for injection molding a battery packaging container in which the container is formed by injection molding between a pair of molds. At the same time as molding, a tongue piece is integrally molded so as to protrude from one side of the container. After molding one container, the mold is opened, the molded container is moved by a predetermined pitch in the direction in which the tongue piece is formed, and then the tongue piece is molded again. The method is characterized in that the next container is injection molded between the molds, one side of the preceding container and the tongue of the next container are integrally joined, and the containers are successively molded.

[0009]

[Operation] In the above injection molding method for a battery packaging container, the container is molded into a plate shape, so the mold is small and inexpensive. In addition, since the length and width of the bottom of the battery are fixed depending on the standard, even if the type of battery changes, only the thickness will change, and containers molded with the same mold can be used in common. Can be done. On the other hand, since a plurality of containers are successively injection molded via the tongue piece, they can be moved at a constant pitch on a conveyor using a robot, for example. Therefore, these operations can be easily automated by installing automatic insertion, wrapping, and packing equipment along the conveyor. Further, since the container is formed into a band shape, it moves in a hoop shape when being moved, making it easy to confirm the quantity.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the injection molding method for a battery packaging container according to the present invention will be described below with reference to the drawings.

An embodiment of the present invention is shown in FIGS. 1 to 11. In this embodiment, a continuous injection molding apparatus for manufacturing battery packaging containers will be described.

FIG. 7 is a perspective view of the battery 21 housed and held by the packaging container of this embodiment, viewed from the bottom side. A pair of locking grooves 23 are provided on two longitudinally opposing sides of the bottom surface 22 of the substantially rectangular battery 21, respectively. The locking groove 23 is formed in a hook shape with one end in the same direction open to the bottom surface 22 and the other end closed. The locking groove 23 is for engaging and fixing the battery 21 with a claw provided on the electronic device when the battery 21 is attached to the electronic device (not shown). Furthermore, a pair of electrodes 24 and a positioning recess 25 are formed on the bottom surface 22 of the battery 21.

FIG. 8 is a perspective view showing the packaging container 10 according to this embodiment. In FIG. 8, a substantially rectangular plate portion 11
Ribs 12 projecting at right angles are provided on two opposing sides in the longitudinal direction. Further, the distance between the inner surfaces of the ribs 12 is approximately equal to the length in the longitudinal direction of the battery 21 shown in FIG. Moreover, on the inner surface of the rib 12,
Claw portions 15 are provided that engage with locking grooves 23 provided in the battery 21, respectively. The claw portion 15 is formed into a hook shape with one end opened in the same direction and the other end closed. The claw portion 15 is inserted through the opening of the locking groove 23 and is locked at the closed end.

Furthermore, on one longitudinal side of the plate-shaped portion 11 on the open end side of the claw portion 15, two notches 11a are formed at right angles to the side. Then, the outside of the portion divided by the notch 11a is bent at a right angle, and the locking portion 16
is formed. Furthermore, a protrusion 17 that engages with a recess 25 formed in the bottom surface 22 of the battery 21 is provided at the base of the locking portion 16 .

Of the two sides of the plate-shaped part 11 on which the claw parts 15 are provided, a hanger part 18 is located on the right side in the figure.
It extends integrally through 9. Further, the hanger portion 18 is provided with a locking hole 18a for hooking onto a display rod such as a display shelf.

Next, the procedure for installing the battery 21 into the packaging container configured as described above will be explained. The claw portion 15 of the plate-shaped portion 11 is inserted into the opening of the locking groove 23 of the battery 21, and the battery 21 is fitted between the ribs 12. Next, as shown in FIG. 9, the battery 21 is
By moving in the direction of arrow A, the locking groove 2
3. The claw portion 15 is fitted into the inside. At this time, the protrusion 17 is pressed against the bottom surface 22 of the battery 21, and the notch 11 is formed near the protrusion 17.
The locking portion 16 formed with a is elastically deformed downward in FIG. When the bottom surface 22 of the battery 21 and the top surface of the plate-shaped part 11 reach a position where they are aligned, the locking part 16, which had been elastically bent downward, moves along the side surface of the battery 21 and returns to its original position. At the same time, the protrusion 17 engages with the recess 25. In FIG. 9, the movement of the battery 21 to the right is
The distal end of the claw portion 15 is regulated by coming into contact with the closed portion of the locking groove 23 . Movement to the left is regulated by contact of the locking portion 16 with the left side surface of the battery 21 . Further, the movement in the vertical direction is controlled by the ribs 12 on the upper and lower sides of the battery 21.
It is regulated by contact with. In this way, battery 2
1 is firmly held by the plate-like portion 11. The electrode 24 provided on the bottom surface of the battery 21 is covered and protected by the plate member 11.

When removing the battery 21 from the plate-shaped part 11, push down the locking part 16 to release it from the side surface of the battery 21, and then move the battery 21 to the plate-shaped part 11 in the direction opposite to the arrow A shown in FIG. The locking groove 23 may be disengaged from the claw portion 15 by moving the locking groove 23 .

Furthermore, as shown in FIG.
It can be easily carried by folding it and inserting it into the belt of the person carrying it.

Next, an embodiment of an injection molding method for a battery packaging container constructed as described above will be described with reference to FIGS. 1 to 6.

One of the molds, the male mold 31, has a container 10
Two convex portions 32 and 33 having a shape matching the upper surface of are provided at a predetermined interval. The female mold 34, which is the other mold, is provided with recesses 35 and 36, respectively, at positions facing the protrusions 32 and 33 provided on the male mold 31. The shape of one of the recesses 35 matches the top surface of the container 10, and the female mold 34 has a sprue 37 that communicates the recess 35 with the outside.

A movable mold 3 is provided between the male mold 31 and the female mold 34.
8, and a recess 39 having a shape that matches the recess 35 provided in the female mold 34 is formed on the surface of the movable mold 38 facing the male mold 31. The shape of the movable mold 38 on the side facing the female mold 34 is such that it can be closely fitted into a recess 36 provided in the female mold 34. When the male mold 31 and the female mold 34 are in close contact with each other and the movable mold 38 is placed in the recess 36, the space between the convex part 32 of the male mold 31 and the concave part 35 of the female mold 34 and the convex part of the male mold 31 33 and the recess 39 of the movable mold 38, substantially the same predetermined gap (cavity) is formed.

On the other hand, the movable mold 38 is moved by a driving means (not shown) in the direction shown by the arrow A-B parallel to the mold surface and in the direction shown by the arrow C-D perpendicular to the mold surface. It has become. Further, the male die 31 is provided with a knockout pin 40 that can be projected from the convex portion 32, and is moved in the direction of arrow E-F to knock the molded container 10 out of the convex portion 32 of the male die 31.
It is designed to be separated from 2.

Next, each step of injection molding will be explained with reference to FIGS. 1 to 6. In the drawings, illustrations of parts that are not necessary in each step are omitted as appropriate.

With the male mold 31 and female mold 34 shown in FIG. 1 in close contact with each other, synthetic resin is injected from the sprue 37 to fill the cavity between the molds 31 and 34. At this time,
The movable mold 38 is fitted into the recess 36 of the female mold 34.

In FIG. 2, the male mold 31 is removed from the female mold 34, and at the same time, the movable mold 38 is also moved in the direction of arrow C and removed from the protrusion 33 of the male mold 31 and the recess 36 of the female mold 34.

In FIG. 3, the movable mold 38 is moved in the direction of arrow A so that the concave portion 39 of the movable mold 38 faces the convex portion 32 of the male mold 31. Then, the knockout pin 40 is projected in the direction of arrow E, and the molded container 10 is removed from the convex portion 32 and fitted into the concave portion 39.

In FIG. 4, the movable mold 38 supporting the container 10 is moved in the direction of arrow B and stopped at a position facing the recess 36 of the female mold 34.

In FIG. 5, the male mold 31 is brought into close contact with the movable mold 38 and the female mold 34, and the container 10 is fitted into the convex portion 33 of the male mold 31.

In FIG. 6, the cavity is again filled with synthetic resin in the same manner as in the step of FIG. At this time, the newly molded container 10a and the container 10 in the movable mold 38 are connected via the tongue piece 18 serving as a hanger.

By repeating the above operations, FIG.
A container 10 is obtained which is continuously formed into a band shape through the tongue piece 18 as shown in FIG.

According to this embodiment, the container 10 can be continuously formed into a hoop shape. Furthermore, the movable mold 38 can also be applied to the case of molding flat containers.

[0032]

As explained above, according to the injection molding method for a battery packaging container of the present invention, since the container is continuously molded into a band shape through the tongue piece, it is possible to insert the product at the same time as molding. , wrapping, packing, etc. can be easily automated, and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the manufacturing process of an embodiment of the injection molding method for a battery packaging container of the present invention.

FIG. 2 is an explanatory diagram showing the manufacturing process of an embodiment of the injection molding method for a battery packaging container of the present invention.

FIG. 3 is an explanatory diagram showing the manufacturing process of an embodiment of the injection molding method for a battery packaging container of the present invention.

FIG. 4 is an explanatory diagram showing the manufacturing process of an embodiment of the injection molding method for a battery packaging container of the present invention.

FIG. 5 is an explanatory view showing the manufacturing process of an embodiment of the injection molding method for a battery packaging container of the present invention.

FIG. 6 is an explanatory diagram showing the manufacturing process of an embodiment of the injection molding method for a battery packaging container of the present invention.

FIG. 7 is a perspective view of a battery, which is an example of an item packaged in a container molded according to this embodiment, as viewed from the bottom.

FIG. 8 is a perspective view showing an example of the container.

FIG. 9 is a perspective view showing a state in which the battery is housed and held in the same container.

FIG. 10 is a side view illustrating an example of how the container is used.

FIG. 11 is a perspective view showing a state in which the container is continuously injection molded.

FIG. 12 is a perspective view showing the structure of an example of a conventional battery packaging container.

[Explanation of symbols]

10 Battery packaging container 18 Tongue piece 21 Battery 31 Core (mold) 34 Female mold (mold)

Claims (1)

[Claims] Claim 1: An injection molding method for a battery packaging container, in which the container is molded by injection molding between a pair of molds,
The container is molded into a substantially plate shape, and a tongue piece is integrally molded so as to protrude from one side of the container, and after molding one container, the mold is opened, and the tongue piece forms the molded container. The next container is injection molded again between the molds, and one side of the preceding container and the tongue of the next container are integrally joined to form a continuous mold. 1. A method for injection molding a battery packaging container, comprising: molding the container.