JPH0443975Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a mold for forming a battery case lid for a storage battery with a carrying handle used, for example, in automobiles or golf carts.

(Prior Art) Large storage batteries used in large automobiles such as trucks and golf carts are heavy, so a handle 2 is attached to the battery case lid 1 as shown in FIG. A unit formed in one piece is used.

(Problem to be solved by the invention) However, depending on the vehicle model, this handhold part gets in the way and is difficult or impossible to install. As shown in FIG. 2, it is conceivable to attach a rope pulley to the container lid 1, but it is uneconomical to purchase a new molding die because it increases costs. Furthermore, cutting and removing the handle portion of the molded battery case lid poses problems such as increased processing costs.

(Means for solving the problem) This idea was made in order to eliminate the waste of labor and expense, and it is possible to make a small amount of processing on the existing molding die without having to purchase a new molding die. The purpose is to provide a mold that can manufacture battery case lids that can be easily used in different ways through machining. Different required nests, that is, replacement parts, are inserted and equipped.

(Example) An example of this invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a battery case lid 1 in which a conventional handle portion 2 is integrally molded. FIG. 2 is a perspective view of the battery case lid 1 in which a part of the handle is cut off when the handle is in the way, and a rope pulley is provided on the remaining base. The present invention aims to economically form and manufacture these two types of battery case lids. Figure 3 shows the front view of the battery case lid immediately after molding when manufacturing a battery case lid with the rope shown in Figure 2. A cutting slit portion 3a is formed between the upper curved portion 2a of the handle portion 2 and the base portion 3 of the handle portion. 4 is a through hole for the rope. Then, by cutting the narrowed part 3b using the cutting slit part 3a, the upper curved part 2a of the handle part is cut off and removed, leaving only the base part 3 of the handle part, as shown in FIG. 4. 1 is manufactured, and a rope is passed through the rope through hole 4 of this to manufacture a battery case lid provided with the rope shown in FIG.
Fig. 5 is an enlarged perspective view of the handle part, which is formed in an arch shape, and has a plurality of recesses as shown in the cross-sectional view of Fig. 6, and the hand is passed through the central penetrating part and grasped by the upper curved part for transportation. It is something.

Such a battery case lid is molded using a molding die shown in FIG. 7 and subsequent figures.

As shown in Figure 7a, the molding die is composed of an upper female mold 5, a lower male mold 6, and left and right side male molds 7 and 8, and as shown in Figure 7b, the upper female mold 5 and Side male molds 7 and 8 are combined with each other on both sides of the lower male mold 6, and resin is injected into the space created by the combination of the respective molds to form a battery case lid.

FIG. 8 shows a relative facing surface 7a where the side male mold faces the side surface of the female upper mold (the left and right side male molds have the same shape),
As shown in an enlarged view in FIG. 5, a plurality of protrusions 9 for forming a plurality of recesses and a central protrusion 10 for forming a central penetrating portion are protrudingly provided. The molding die up to this point is the same as the conventional one, but in the present invention, a concave structural part is provided on the opposing surface 7a, and a replacement part is fitted into the part to mold the battery case lid. In the case shown in FIG. 8, concave structural parts 12 are provided at both ends of a plurality of projections 9 projecting in an arch shape, and this is combined with the conventional battery case with a handle part shown in FIG. A complete replacement part 11a of the original shape is inserted and equipped so that the lid can be molded. FIG. 10 shows a cross section of a state in which the side male mold 7 thus constructed is assembled to the side surface where the upper female mold 5 and the lower male mold 6 are combined with each other. Concave structure portion 12
A complete replacement part 11a is fitted and equipped. When this complete replacement part 11a is fitted and equipped, a space for molding the handle portion 2 is formed between it and the female upper mold 5.

FIG. 9 shows a facing surface 7a where the side male mold faces the side surface of the female upper mold (the left and right side molds have the same shape) as in FIG. 8, but in this case, the cutting shown in FIG. A case is shown in which an incomplete replacement part 11b used for forming the slit 3a is fitted into the concave structural part 12. Reference numeral 15 denotes a protrusion for forming a cutting slit, which is provided at the same height as the central protrusion 10, and whose side ends extend to the same plane as the outer surface of the protrusion 9, as shown in FIG. narrow part 3
At b, the handle base 3 and the upper curved part 2a of the handle are formed so as to be joined. 1
4 is a protrusion for forming a rope through hole at the base of the hand portion. FIG. 11 shows a cross section of a state in which the side male mold 7 thus constructed is assembled to the side surface where the upper female mold 5 and the lower male mold 6 are combined with each other. The incomplete replacement part 11b is fitted into the concave structural part 12 and fixed with a pin 13. This incomplete replacement part 1
When 1b is fitted, the protrusion 15 and the protrusion 1
The tip of 4 is brought into contact with the side surface of the female upper mold 5 to form a cutting slit and a rope through hole. Then, the resin is injected into the space where the upper curved part 2a of the handle part is formed through the narrow part of the handle part (which is the back side of the protruding part 15 in FIG. 11). The upper curved portion 2a of the handle portion is molded at the same time. Then, on the assembly line for assembling storage batteries, the upper curved part of the handle part 2 is assembled in the same manner as when assembling using a battery case lid with a handle part as shown in FIG.
After assembly is completed, the narrow part 3b is cut, the upper curved part 2a of the handle part 2 is removed, and the rope is attached as shown in Fig. 2. Cutting the handle part is easy because it is narrow.

Furthermore, the side ends of the protrusions 15 forming the cutting slits extend only to the same plane as the outer surface of the protrusions 9, and do not come into contact with the inner surface of the female upper die 5. They do not rub against each other when combined.

12 shows the state in which the central projection 10 of the side mold 7 is in contact with the female upper mold 5, and the tip of the central projection 10 is in contact with the side surface of the female upper mold 5, as shown in FIGS. 5 and 6. As shown in the enlarged view, form a penetration part for the hand to pass through.

As is clear from the above explanation, according to this invention, there is no need to manufacture a new mold for forming the battery case lid, and a part of the mold is processed to create a structure that allows replacement parts to be replaced. This saves costs, and since the replacement part is an incomplete replacement part, it can be molded while retaining the previous shape, and the work procedure can be done without distinction on the storage battery assembly line. This is efficient, and furthermore, there are no parts that rub against each other when the male and female molds are brought into contact with each other, thereby preventing damage to the molds.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one example of a storage battery container lid, FIG. 2 is a perspective view of another example of a storage battery container lid, and FIG. 3 is a perspective view of a storage battery container lid formed according to an embodiment of this invention. Front view, Figure 4 is a front view of the storage battery cover after processing the battery case lid in Figure 3, Figure 5 is a partially enlarged perspective view of the handle, and Figure 6 is the A-A section in Figure 5. 7 to 12 are cross-sectional views of a mold for forming a storage battery according to an embodiment of this invention, and FIG. 7a is an exploded perspective view, and FIG.
Figure b is a front view when assembled, Figures 8 and 9 are relative front views of the side male molds when different replacement parts are used, and Figure 10 is a cross-sectional view of the part B-B in Figure 8. A partial cross-sectional view of the main part, Figure 11 is C in Figure 9.
FIG. 12 is a partial cross-sectional view of the main part at the center vertical cross-section of FIG. 9. DESCRIPTION OF SYMBOLS 1... Battery container lid, 2... Handle part, 2a... Upper curved part of handle, 3... Handle base, 3a... Cutting slit, 5... Female upper mold, 6... Lower male type, 7, 8...
...Side male mold, 11a...Complete replacement part, 11b
... Incomplete replacement part, 12 ... Concave structure part.

Claims (1)

[Scope of utility model registration request] In a mold for forming a storage battery case lid having a handle part, a part of the opposing surface of one of the male and female molds that are brought together to form the handle part is attached and detached. A concave structural part is provided in which a freely replaceable part can be fitted and attached, and in this concave structural part, the original complete replacement part and the upper curved part of the handle part are removed by cutting after molding. A mold for a storage battery case lid, in which an incomplete replacement part with a cutting slit formed in the handle part is attached by replacement.