JPH0420769B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chain such as a watch band or an ornamental bracelet, which has a structure in which a required number of muntins are connected by a shaft, or a chain, which has a structure in which two muntins are connected by a shaft, such as a case. The present invention relates to a mold for forming a connected object such as a structure connected to a lid by a shaft and a hinge-like structure.

A conventional chain is constructed by using the required number of muntins, fitting the ends of each muntin one after another, and connecting each muntin by fitting pins into holes provided in the fitted ends. Alternatively, each muntin is constructed by connecting each muntin using a connecting assembly, which requires work to connect the muntins, which has the drawback of increasing costs.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a mold capable of molding a connected article having a structure in which a required number of muntins are connected by a shaft.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention that achieve the above objects will be described as shown in the drawings.

Fig. 1 is an enlarged perspective view showing an example of a chain molded by the mold of the present invention, Fig. 2 is an enlarged plan view of a part thereof, Fig. 3 is an enlarged side view thereof, and Fig. 4 is the same as Fig. 2. - Line sectional view, Figure 5 is the same as Figure 2 -
6 is a sectional view taken along the - line in FIG. 2, and FIG. 7 is a sectional view taken along the - line in FIG. 3.

In FIGS. 1 to 7, reference numeral 2 indicates a required number of muntins constituting the chain 1. In FIGS. A convex portion 2a is provided at one end of each muntin 2, and a concave portion 2b is formed at the other end. A shaft 3 is integrally formed on both sides of the convex portion 2a of each muntin 2, and a hole 5 into which the shaft 3 fits is formed in both protruding ends 4 forming the concave portion 2b of each muntin 2. There is. The shaft 3 of the protrusion 2a of one muntin 2 is connected to the hole 5 of the protruding end 4 of the muntin 2 connected thereto.
The shaft 3 of the protrusion 2a of this muntin 2 is fitted into the hole 5 of the protruding end 4 of the next muntin 2, and in the same manner, the shaft 3 and hole 5 of each muntin 2 are fitted. and constitutes chain 1. 6 and 7 are connectors connected to both ends of the chain 1 and connected and disconnected from each other. A concave groove 8 is provided in the length direction on the upper surface of one of the connectors 6, and a convex portion of the muntin 2 constituting one end of the chain 1 is provided in the hole 5 formed at both ends of the concave groove 8. The shaft 3 of 2a is fitted. Connection tool 6
Engagement holes 9a and 9b are provided on both sides of the concave groove 8 at predetermined intervals in the length direction. In the illustrated example, three pieces are provided each. The shaft 3 of the other connector 7 is fitted into the hole 5 of the tip 4 of the muntin 2 constituting the other end of the chain 1. Two elastic arms 10a and 10b that spring outward are extended on the side opposite to the connection side of the connector 7.
When the slope portions 11a and 11b are brought into contact with the inner surfaces of both sides of the concave groove 8 and pressed to engage with the engagement holes 9a and 9b of one of the connectors 6, the elastic arms 10a and 10b resist the elastic force. It is inserted into the concave groove 8 while curving inward, and then springs outward to form the engagement holes 9a, 9b.
Locking protrusions 12a, 12b with sloped parts 11a, 11b that engage with the elastic arms 10a, 10b are provided on the outer side of the tips of the elastic arms 10a, 10b. In addition, the elastic arm 10
Finger hooks 13a, 13 are provided at the top of the tips of a, 10b.
b is formed.

The mold of the present invention for molding the chain 1 having a structure in which a required number of muntins 2 are connected as described above includes a pair of molds for molding two or more muntins, and a pair of molds for molding two or more muntins. It consists of a required number of molds for molding a muntin connecting part which are slidably fitted into insertion holes provided on both sides between the two molds between adjacent muntin molding parts.

Fig. 8 is a perspective view showing a part of the mold of the present invention in an open state for easy understanding, and Fig. 9 is a cross-sectional view taken along the - line in Fig. 8 in the mold closed state, with respect to the - line in Fig. 2. FIG. 10 is a sectional view taken along the line - in FIG. 8, and FIG. 11 is a sectional view taken along the line XI--XI in FIG. A cross-sectional view of the mold relative to the - line in Figure 2,
FIG. 12 is a sectional view taken along the line XII-XII of FIG. 8, and a sectional view of the mold taken along the line XII'-XII' of FIG.

The mold of the present invention molds two or more muntins 2 constituting a chain 1, and one end of each muntin 2 is formed into a convex portion 2.
a pair of molds 16 that can be opened and closed, each having an inner surface shape for molding the other end into the recess 2b and having an injection gate 15 for each portion 14 in which each muntin 2 is molded;
17, and is slidably fitted into the insertion holes 18 provided on both sides between the two molds 16, 17 between the adjacent muntin molding parts 14 of the pair of molds 16, 17, and molded. A shaft 3 is integrally attached to both sides of the convex portion 2a of each muntin 2, and a concave portion 2 of the muntin 2 connected thereto.
b includes a mold 19 for molding a muntin connection part for molding holes 5 into which each shaft 3 fits.

In addition, the muntin molding mold 16, 1 in the present invention
Of course, the inner shape of the chain 7 is determined by the shape of the chain 1 to be manufactured.
Furthermore, the mold 19 for forming the muntin connection part has a shaft forming hole 1 in the tip of the shaft 19b of the slide piece 19a.
9c is provided. The mold 19 may be slid in the insertion hole 18 between the molds 16 and 17 by using an angular pin or other appropriate means such as a cylinder.

FIG. 13 is an explanatory cross-sectional view when sliding the mold 19 for molding the muntin connection part using an angular pin, in which figure a shows the mold open and figure b shows the mold closed. There is. This mold sliding mechanism is constructed by fitting an angular pin 21 into a hole 20 formed in a V-shaped cross section in one muntin molding mold 16, and inserting the angular pin 21 into the muntin molding mold 16. , 17 into the hole 22 formed in the same V-shape in the mold 19 for molding the muntin connection part in the insertion hole 18 between the molds 16, 1.
The angular pin 2
A recessed portion 23 serving as a relief for the tip of one muntin is provided in the other mold 17 for molding muntin.

Next, using the mold of the present invention configured as described above, a first
The ability to mold the chain 1 shown in FIGS. 7 to 7 will be described. First, the molds 16 and 17 are closed, and the mold 19 in the insertion hole 18 between the molds 16 and 17 is moved from the mold open position (see Figure 13 a) to the mold closed position (see Figure 13 a). (see b). Thereafter, when a material, such as a molten plastic or metal, is injected through each injection gate 15, the material fills each muntin molding part 14 formed between the molds 16 and 17, and then flows through the mold 19. Shaft forming hole 1
It fills in 9c and solidifies. Once solidified, mold 1
6 and 17, and insert the insertion hole 18 between the molds 16 and 17.
If the inner mold 19 is slid from the mold closed position shown in FIG. 13b to the mold opened position shown in FIG. 13a,
A chain 1 in which a required number of muntins 2 are connected by a shaft 3 from inside the molds 16 and 17 as shown in FIGS. 1 to 7.
can be manufactured by molding.

In addition, in order to form the connectors 6 and 7 that can be connected and disconnected from each other as shown in FIG.
5 As shown in the figure, the muntin molding part 14 of the molds 16 and 17
Injection gates (not shown) are provided in the portions 24 and 25 that form the inner surface shape of both ends of the group and form the connectors 6 and 7, and injection gates (not shown) are provided on both sides of the convex portion 2a of the muntin 2 that constitutes one end of the chain 1. and the connector 7 on the recess 2b side of the muntin 2 constituting the other end of the chain 1.
Shafts 3 are formed on both sides of the base of the shaft 3, and holes 5 are formed at both ends of the concave groove 8 of the connector 6 connected to these shafts 3 and at both protruding ends 4 forming the concave portion 2b of the muntin 2. By additionally providing a mold 26 for molding the connector connection portion, the chain 1 having the connectors 6 and 7 can be integrally manufactured by molding.

In addition, in the embodiment, a case has been described in which the case is applied to forming a chain having a structure in which a large number of muntins are connected by a shaft, but the present invention is applicable to a chain having a structure in which two muntins are connected by a shaft, such as a case. Needless to say, the present invention can also be applied to molding a structure in which the lid is connected by a shaft or a structure such as a hinge.

As is clear from the above description, the present invention comprises a pair of molds for molding two or more muntins and a required number of molds for molding the muntin joints, and these molds By combining molds, it is possible to integrally manufacture a connected object with a structure in which the required number of muntins are connected by a shaft, eliminating the need for the work of connecting muntins and reducing costs. play. In addition, in the case of chain molding, the shape of the inner surface of both ends of the muntin molding part group of a pair of molds for molding two or more muntins is made into a shape that can form a connecting tool for connecting and disconnecting each other, and
By additionally installing two fitting molding molds, a chain having a connecting fitting can be integrally manufactured by molding.

[Brief explanation of drawings]

Fig. 1 is an enlarged perspective view showing an example of a chain molded by the mold of the present invention, Fig. 2 is an enlarged plan view of a part thereof, Fig. 3 is an enlarged side view thereof, and Fig. 4 is the same as Fig. 2. - Line sectional view, Figure 5 is the same as Figure 2 -
6 is a sectional view taken along the - line in FIG. 2, FIG. 7 is a sectional view taken along the - line in FIG. 3, and FIG. 8 shows a part of the mold of the present invention in an open state for easy understanding. Fig. 9 is a perspective view of Fig. 8 in the mold closed state.
10 is a sectional view taken along the line - in FIG. 8, FIG. 11 is a sectional view taken along the line XI-XI in FIG. 8, and FIG. 12 is a sectional view taken along the line XII-XII in FIG. 8.
13a and 13b are sectional views for explaining when the mold is opened and when the mold is closed, respectively, when the mold for molding the muntin connection part is slid using the angular pin;
15 and 15 are perspective views showing a connecting tool connected to both ends of the chain and a part of a mold for molding the connecting portion in an open state for easy understanding. 1... Chain (connected object), 2... Kumiko, 2a
... Convex portion, 2b ... Concave portion, 3 ... Shaft, 4 ... Tip end, 5 ... Hole, 6, 7 ... Connector, 14 ... Part for molding muntin (muntin molding part), 15... Injection gate, 16, 17... Mold for muntin molding, 18...
Insertion hole, 19... Mold for molding the muntin connection part, 19c
. . . Shaft forming hole, 24, 25 . . . Portion for molding the connecting tool, 26 . . . Mold for forming the connecting part of the connecting tool.

Claims (1)

[Claims] 1 Molding two or more muntins 2 constituting a connected object, and having an inner surface shape for molding one end of each muntin 2 into a convex part 2a and the other end into a concave part 2b, and each muntin 2 A pair of molds 16 and 17 that are opened and closed and each part 14 for molding the child 2 has an injection gate 15, and each adjacent muntin molding section 1 of this pair of molds 16 and 17
A shaft 3 is integrally fitted on both sides of the convex portion 2a of each muntin 2 to be molded by being slidably fitted into the insertion hole 18 provided on both sides between the molds 16 and 17 between the molds 16 and 17.
A shaft forming hole 19c for forming a hole 5 into which each shaft 3 fits into the recess 2b of the muntin 2 connected thereto.
A mold for molding a joint portion comprising a mold 19 for molding a muntin joint portion.