JPH0133618Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a glass molding mold having locking means provided on the mating surfaces of the split mold to prevent the split mold from shifting.

(Prior art) As a locking means for preventing the split molds from shifting, the mold holders c and d of the split molds a and b are connected by a hinge e, as shown in FIG. ,b
Tapered surfaces j and k are formed on both sides of the cavities h and i at the mating surfaces f and g, respectively, to form the mating surfaces f and g.
By making one cavity part of g protrude and recessing the other cavity part, and by fitting the mating surfaces f and g with the tapered surfaces j and k when the split molds a and b are put together, the cavity is formed. There is a method for positioning h and i.

In addition, as shown in Fig. 7, mold holders l, m
is rotated by its hinge n to separate the split molds o and p.
When the mating surfaces q and r of are combined, the above mating surfaces q,
Divide the bushes s and t, each of which has an inner hole opened at r in a straight line, into mold holders l and m, and molds o and p.
There is also a system in which the cavities u and v are positioned through the bushes s and t by driving dowel pins w and x into the bushes s and t with the split molds o and p aligned.

(Problem to be solved by the invention) However, in the one shown in Fig. 6, the mating surfaces f, g
Wear may cause looseness in the fitting on the tapered surfaces j and k, and looseness may also occur in the hinges e of the mold holders c and d, which tends to cause vertical and lateral misalignment of the cavities h and i. Become. Furthermore, in the case shown in FIG. 7, repeated driving of the dowel pins w and x causes looseness in the engagement between the dowel pins w and x and the bushes s and t, which tends to cause misalignment of the cavities u and v. Become. This results in a decrease in the dimensional accuracy of the glass product and a decrease in productivity, and there is a problem in that it takes time and effort to repair the mold.

(Means for Solving the Problems) The present invention solves these problems by providing at least one pair of semi-cylindrical vertical recesses that match each other on the mating surface of the split mold, and at least one pair of at least one pair of semi-cylindrical vertical recesses that match each other. By providing a semi-cylindrical horizontal recess and removably providing a cylindrical pin in one of the pair of recesses, the vertical and horizontal recesses of the cavity can be utilized. In addition to positioning the pin, the problem of the above-mentioned rattling can be solved by replacing the pin.

That is, a specific means for this purpose is a split mold in which a molding cavity for molding a glass molded object is formed on each mating surface, and a split mold is provided on both mating surfaces surrounding the molding cavities. At least one pair of semi-cylindrical horizontal recesses and at least one pair of semi-cylindrical vertical recesses are formed, which coincide when the molds are put together to form a cylindrical part, and when the split molds are put together, A glass molding mold characterized in that a cylindrical pin that can be fitted into a cylindrical part constituted by each pair of recesses is removably provided in one of the pair of recesses. be.

(Function) In the above-mentioned glass molding mold, since semi-cylindrical recesses are provided in the vertical and horizontal directions,
By fitting the vertical recess of one split mold with the corresponding pin of the other split mold, the cavities of the two split molds are positioned in the lateral direction, and similarly, the horizontal recess and the corresponding pin By mating,
The cavities of the two-part molds are vertically positioned relative to each other. Since the cylindrical pin is removable, the hardness of this pin is lower than that of the recess to prevent wear on the recess, and by replacing the pin, the positioning function of the pin and recess can be maintained. can do.

(Effect of the invention) Therefore, according to the invention, since the semi-cylindrical recesses are provided in the vertical and lateral directions to position the cavity in the vertical and lateral directions, the positioning accuracy is improved. It is possible to improve the quality or yield of the glass products obtained, and it can be applied even when the mating surfaces are not flat and curved.
In addition, since a positioning pin is removably provided in the recess, the positioning function can be maintained by replacing this pin, making maintenance easy. There is also no need to provide protrusions on the mold itself, making it easy to manufacture. becomes easier.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the glass molding mold shown in Fig. 1,
1 and 2 are split molds. Forming cavities 5, 6 for forming the glass molded body B are formed in the mating surfaces 3, 4 of the split molds 1, 2.

And the cavity 5 of these mating surfaces 3 and 4,
6 is surrounded by a pair of molds whose axes are in the vertical direction (in the axial direction of a hinge to be described later for joining the split molds 1 and 2) and whose upper ends are open at the upper end surfaces of the split molds 1 and 2. semi-cylindrical vertical recesses 7 and 8; a pair of semi-cylindrical vertical recesses 9 whose lower ends are opened at the lower end surfaces of the split molds 1 and 2 with their axes extending vertically;
10, a pair of semi-cylindrical horizontal recesses 11 and 12 whose axes are in the horizontal direction perpendicular to the above-mentioned longitudinal direction, and whose ends are open on one side of the split molds 1 and 2; A pair of semi-cylindrical transverse recesses 13 and 14 with one end open are formed on the other side of the split molds 1 and 2. These respective pairs of recesses 7 to 14 are formed when the split molds 1 and 2 are put together.
They can be matched with each other to form a cylindrical portion.

As shown in FIG. Cylindrical vertical pins 15, 16 that can be fitted into
is removably provided with setscrews 19, 19. Further, the pair of horizontal recesses 11,
12, and one of 13 and 14 (in this example, the split mold 2) is provided with a cylindrical horizontal pin 17 that can be fitted into the cylindrical portion thereof, as shown in FIG. 18 is similarly provided removably by set screws 19, 19. These pins 15-1
The hardness of mold 8 is set slightly lower than that of split molds 1 and 2.

20 is a mold holder, each split mold 1, 2
As shown in FIG. 2, one ends of the arc-shaped holder members 21a and 21b are connected by a hinge pin 22 to form a hinge 23, thereby making the split molds 1 and 2 rotatable. Further, as shown in FIG. 3, each split mold 1, 2 has a holder member 21a, 21
b by screws 24, 24.

Note that the vertical pins 15 and 16 and the horizontal pin 1
7 and 18, it is appropriate to make the length 1 to 1.5 times the diameter, and in this example, the vertical and horizontal pins are 2
Although one set is provided, the number of each set may be one or three or more. Of course, the pins 15 to 18 may be provided on the split mold 1.

Therefore, in the glass molding mold described above, when the split molds 1 and 2 are combined, the vertical recesses 7 and 9 of one split mold 1 and the vertical pin 15 attached to the other split mold 2 , 16, the cavities 5, 6 of the split molds 1, 2 are positioned with respect to each other in the lateral direction. Also, by fitting the horizontal recesses 11 and 13 of one split mold 1 with the horizontal pins 17 and 18 attached to the other split mold 2,
The cavities 5 and 6 of the split molds 1 and 2 are vertically positioned relative to each other.

Furthermore, in such a fitted state, the vertical pin 1
The vertical positioning state is reliably maintained by the contact between the end surfaces 25, 25 of the molds 5, 16 and the position regulating surfaces 26, 26 of the split mold 1, which constitute the end surfaces of the corresponding vertical recesses 7, 9. , the end faces 27, 27 of the lateral pins 17, 18 and the corresponding lateral recesses 11, 1
Position regulating surface 2 of split mold 1 constituting the end surface of 3
8, 28 ensures that the lateral positioning is maintained.

Since the hardness of the pins 15 to 18 is set slightly lower than that of the split molds 1 and 2, even if the split molds 1 and 2 are repeatedly opened and closed, the respective recesses 7, 9, 11 and 13 do not wear out or deform, but the pins 15 to 18 side wear out or deform. Therefore, if the cavities 5 and 6 become misaligned, the pins 15 to 1
All you have to do is replace 8.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view showing a glass molding mold in an open state, Fig. 2 is a front view showing a partial cross section of the mold, and Fig. 3 is a perspective view of the same mold. Partially sectional plan view showing the mold in a closed state, No. 4
The figure is a sectional view showing how the vertical pin is installed in the recess of the split mold, Figure 5 is a sectional view showing the horizontal pin installed in the recess of the split mold, and Figures 6 and 7 are FIG. 3 is a perspective view showing a conventional glass molding mold in an open state. 1, 2... split mold, 3, 4... mating surface, 5,
6... Molding cavity, 7-10... Vertical recess, 11-14... Lateral recess, 15, 16...
Vertical pins, 17, 18...Horizontal pins, 19...
...Set screw for removal and removal.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A split mold in which a molding cavity for molding a glass molded object is formed on each mating surface, and each of the mating surfaces surrounding the molding cavities includes: At least one pair of semi-cylindrical horizontal recesses that match together to form a cylindrical part when the split molds are put together, and at least one pair of semi-cylindrical vertical recesses are formed, and when the split molds are put together, A glass molding mold characterized in that a cylindrical pin that can be fitted into a cylindrical part constituted by a pair of recesses is removably provided in one of the pair of recesses. . (2) The cylindrical pin is removably installed in the recess with a set screw.
The mold for glass molding described in .