JPH0390316A - Mold and manufacture of molded item used thereof - Google Patents

Abstract

PURPOSE:To enhance the productivity by a structure wherein a positioning holder detachably positioning each mold, in which molding material filling part is provided, at the predetermined position is equipped. CONSTITUTION:Each mold member 14 contains three mold main bodies 16, for example, for molding gold tees 100. The mold main body 16 contains semitubular head parts 18, at the lower end of each of which a nearly semitubular leg part 20 converging to its tip is formed. Concretely, in the mold main body 16, molding material filling parts 24, each of which is the same shape and dimensions as those, which are obtained by bisecting the golf tee 100 lengthwise, are formed. After the molds 16 are positioned in their predetermined positions by a positioning holder 50, molding material is filled in the molding material filling parts 24. Before the drying and solidification of the molding material, the mold main bodies 16 together with the filled molding material can be removed from the holder 50. Accordingly, the positioning of the molds, the filling of molding material in the molds and the removal of the molds can be performed continuously, resulting in allowing to shorten the production time per molded item 1 and to enhance the productivity of the molded item.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a mold and a method for manufacturing a molded product using the same, such as a mold for molding a golf tee and a method for manufacturing a molded product using the same. Regarding the method.

(Prior art) The conventional golf tee molded product, which is the background of this invention, is made by filling a mold with a molding material, pressing it, drying it, and solidifying it.
It is molded by removing it from the mold.

(Problem to be solved by the invention) However, in the conventional method of manufacturing a molded product using a mold,
It was not possible to remove the molding material from the mold before it dried and solidified. Therefore, it is difficult to continuously take out the molded products from the mold, and it is not possible to improve productivity.

Therefore, the main object of the present invention is to provide a mold and a method of manufacturing a molded article using the same, which can improve productivity.

(Means for Solving the Problems) The first invention has a molding material filling part for molding the molding material into a predetermined shape, and the mold is made of a synthetic resin and the mold is removably placed in a predetermined position. The mold includes a positioning holder for positioning.

The second invention has a molding material filling part for molding the molding material into a predetermined shape, and includes a step of preparing a mold made of synthetic resin, and a positioning step for removably positioning the mold at a predetermined position. A step of preparing a holder, a step of positioning the mold in a predetermined position with a positioning holder, a step of filling the molding material filling part of the mold with molding material, a step of removing the mold from the positioning holder, and a step of filling the mold with molding material. This is a method for manufacturing a molded article, including a step of taking out a molded article made of a molding material from a molded article.

(Operation) The mold is positioned at a predetermined position by the positioning holder. Then, the molding material filling portion of the mold is filled with molding material. The mold together with the molding material is then removed from the positioning holder. Next, the molded article made of the molding material is taken out from the molding material filling part of the mold.

(Effects of the Invention) According to the present invention, the mold can be removed from the positioning holder together with the filled molding material before the molding material is dried and solidified. The filling and removal of the mold from the positioning holder can be carried out continuously. therefore,
The manufacturing time per molded product can be shortened and productivity can be improved.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Example) FIG. 1 is an illustrative view of essential parts showing an embodiment of the present invention.

In this embodiment, a mold for manufacturing, for example, a golf tee will be described.

This mold 10 includes a mold 12.

The mold 12, as shown in particular in FIGS. 2A to 2C,
It includes two mold members 14.14 of symmetrical construction.

This mold member 14 is particularly suitable for the golf tee 100 shown in FIG.
It includes, for example, three mold bodies 16 for molding. The mold body 16 includes a semi-cylindrical head 1B, and this head 18
A substantially semi-cylindrical leg portion 20 whose lower end is tapered
is formed.

The leg portion 20 is formed to have a smaller diameter than the head portion 18, and has a tip portion 22 in the shape of an inverted semi-conical cylinder at its lower end. Furthermore, a very small semi-cylindrical notch 22a is formed at the lower end of the pointed end 22 for molding, especially for removing air.

Therefore, the mold body 16 is formed with a molding material filling portion 24 having the same shape and size as the golf tee 100 cut vertically into two. The head 18 of the mold body 16
As shown in Fig. 1C, there is a punch 7 on the inner peripheral surface of the upper end of the
A sloped portion 24a is provided to facilitate insertion of the zero.

These three mold bodies 16 are connected by, for example, a plate-shaped support member 26. In this case, three mold bodies 16
are connected side by side and in parallel at a predetermined interval. Note that the number of mold bodies 16 to be connected may be changed arbitrarily.

Further, both ends 26a and 26b in the longitudinal direction of this support member 26 are bent at appropriate angles to accommodate the protrusion of the mold body 16, respectively.

Further, a pin 28 having a circular cross section and constituting one of the retaining means is formed on one longitudinal end side of the support member 26 on the concave surface side of the mold body 16, and a pin 28 and a pin 28 on the other end side are formed. A hole 30 constituting the other of the retaining means having substantially the same diameter is formed.

The mold member 14 is integrally formed by press molding from, for example, a hard plastic material that does not undergo plastic deformation even when pressurized at room temperature.

Then, the opposing pins 28 of the two mold members 14.14
By fitting the holes 30 and 30 together, the two bottom-shaped material-filled portions 24 have substantially the same shape and size as, for example, the golf tee 100. Note that instead of the pin 28 and the hole 30 as the engagement means, for example, two mold members 14 and 14 are used.
The ends may be connected by a hinge.

Next, the positioning holder 50 for positioning the mold 12 at the position of the punch 70 will be explained in FIGS. 1 and 3A.
The explanation will be given by using Figures 3F and 3F as fish farming.

This positioning holder 50 includes, for example, two fixing blocks 52 and 54 that are approximately T-shaped in cross section and of the same size. These two fixing blocks 52 and 54
is made of a hard metal such as die steel or special tool steel.

Further, between the two fixing blocks 52 and 54, there are, for example, six guide blocks 56a, 56.
b, 56c, 56d, 56e and 56f are arranged side by side. These guide blocks 56a to 56f are made of hard metal such as die steel or special tool steel.

Two, for example, circular through holes 57 are formed approximately in the center of these guide blocks 56a to 56f at appropriate intervals in the width direction, and these through holes 57 include:
As shown in FIG. 3E, a slide bin 58 having a circular cross section is slidably inserted.

Furthermore, the fixing block 52 and the guide block 56f are formed by, for example, three fixing screws 55a and 55 shown in FIG. 3B.
b and fixed at 55c. In this case, the fixing screw 55
a is formed at the upper center of the fixing block 52, and fixing screws 55b and 55c are formed at the lower center of the fixing block 52 at appropriate intervals. Similarly, the fixing block 54 and the guide block 56a are fixed with three fixing screws 55a, 55b and 55c.

Note that these fixing blocks 52 and 54 are provided with a vice fixing hole 59 for fixing them to a vise (not shown). For example, a screw (not shown) is inserted through the vice fixing hole 59, and the fixing blocks 52 and 54 are fixed to the mouth of the vice (not shown). Further, the vice is formed so that it can be pulled out in the longitudinal direction of the positioning holder 50 from both sides of the fixing blocks 52 and 54 by a device having, for example, a hydraulic mechanism.

Further, the guide blocks 56a and 56b are, for example, two guide blocks 60 as shown in FIGS. 3C and 3F.
are connected. These two screws 60 are formed at intervals between the slide bins 58, 58. Also,
These two screws 60 are inserted from the lower end of the guide block 56a.
The height from the lower end of the guide block 56a to the slide bin 58 is the same as the height from the lower end of the guide block 56a to the slide bin 58.

In this case, for example, a cylindrical recess 61a is formed in the center of the guide block 56a with a predetermined length from one end (fixing block 52 side) to the other end.
A screw hole 61b communicating with this recessed portion 61a is formed from the recessed portion 61a to the other end of the guide block 56a. Furthermore, the guide block 56b has a screw hole 61.
A screw hole 61c is formed with a predetermined length on the same straight line as b.

Note that the fixing block 52 has a head 60a of a screw 60.
A return hole 61d is formed. The return hole 61d is formed to have the same size as the diameter of the recessed portion 61a, and
It is formed on the same straight line as the recessed portion 61a.

Then, the screw 60 is inserted through this recessed part 61a,
The tip 60b of the screw 60 is screwed into the screw hole 61C and fixed to the guide block 56b. At this time, screw 6
The head 60a of No. 0 is fixed at a position where its tip slightly enters the return hole 61d of the guide block 56a. Similarly, the guide blocks 56f and 56e are connected to the two screws 6.
Concatenated with 0. Note that the guide blocks 56a and 56b
and the guide block 56f.
The two screws 60 connecting 56e and 56e are formed on the same straight line.

Further, as shown in FIGS. 3D and 3F, the guide blocks 56b and 56c are also
are connected. In this case, the two screws 60 connecting the guide blocks 56b and 56c are formed below the screw 60 connecting the guide blocks 56a and 56b. That is, a cylindrical recess 61a is formed at the lower center of the guide block 56b with a predetermined length from one end (guide block 56a side) to the other end, and a screw hole communicating with this recess 61a is formed. 61b is formed from the recessed part 61a to the other end of the guide block 56b (guide block 56c side).Furthermore, a screw hole 61c is formed in the guide block 56c with a predetermined length on the same straight line as the screw hole 61b. The return hole 61 of the head 60a of the screw 60 is formed in the guide block 56a.
d is formed. This return hole 61d has a recessed portion 6
It is formed to have the same diameter as 1a, and is formed on the same straight line as the recessed portion 6ta. Then, screw 6 from this recessed part 61a.
0 is inserted, and its tip 60b is screwed into the screw hole 61c and fixed to the guide block 56c. At this time, the head 60a of the screw 60 is fixed at a position where its tip slightly enters the return hole 61d of the guide block 56a. Similarly, guide blocks 566 and 56d are connected with the screw 60. In this case, the guide block 56
The two screws 60 connecting b and 56c and the two screws 60 connecting guide blocks 56e and 56d are:
They are formed on the same straight line.

Therefore, in this positioning holder 50, by pulling out the fixing blocks 52 and 54 at a predetermined pitch using a vise (not shown), a predetermined interval is created between each guide block 56a to 56f. That is, by pulling out the fixing blocks 52 and 54, the guide blocks 56a and 56f fixed thereto are also pulled out together. In this case, the guide block 56a
and 56f are the end surfaces 61e of the recessed portions 61a, respectively.
is pulled out to a position where it hits the head 60a of the screw 60. Therefore, gaps are provided between guide blocks 56a and 56b1 and between guide blocks 56e and 56f. Further, by pulling out the fixing blocks 52 and 54, the guide blocks 56b and 56e fixed to the tips of the screws 60 are pulled. These guide blocks 56b and 56e are also pulled out to a position where the end surface 61e of the recessed portion 61a contacts the head 60a of each screw 60. Therefore, guide blocks 56b and 56C1 and guide blocks 56e and 5
A gap is created between the 6d and the 6d. Furthermore, when the fixing blocks 52 and 54 are pulled out, the guide blocks 56c and 5 fixed to the tips 60b of the screws 60 are
6d is also pulled out, and the guide block 5
A gap is created between 6cε56d. In this embodiment, between each guide block 56a to 56f,
For example, an interval of 3u to 5H is provided.

Then, the molding material in the removed mold 12 is solidified by drying naturally or in a dryer. That is, this mold 12 can be used, for example, as a shape-retaining mold for solidification and drying. Note that the molding material in the mold 12 may be dried and solidified while the mold 12 is attached to the positioning holder 50.

Then, the mold 12 is divided into two mold members 14, 14, and the dried and solidified golf tee (molded product) is taken out from therein.

In this embodiment, the mold 12 can be taken out together with the molding material from the positioning holder 50 before the molding material is dried and solidified, so that the mold 12 can be attached to the positioning holder 50, the mold 12 can be filled with the molding material, and the positioning can be carried out. Holder 50
The mold 12 can be continuously removed from the mold 12.

Therefore, when manufacturing a large quantity of molded products, the manufacturing time per molded product can be shortened.

Furthermore, since the mold 12 can be divided into two mold members 14.14, a molded article that is in close contact with the mold 12 can be easily removed from the mold 12. In this case, since both ends 26a and 26b of the support member 260 of the mold 12 are bent outward, the mold 12 can be easily divided into two mold members 14.14 by sandwiching the ends 26a and 26b. be able to.

In the above-described embodiments, a golf tee was used as an example of the molded product, but the present invention can also be applied to other molded products.

[Brief explanation of drawings]

FIG. 1 is an illustrative view of essential parts showing an embodiment of the present invention. 2A to 2C are diagrams showing a mold used in the mold shown in FIG. 1, and FIG. 2A is a front view thereof,
FIG. 2B is a plan view thereof, and FIG. 2C is a sectional view taken along line 11C-rIG in FIG. 2A. FIG. 3A is a plan view showing a positioning holder for positioning the mold shown in FIGS. 2A to 2C. FIG. 3B is a front view showing the fixing block, and FIG.
Figure C is a front view showing a guide plotter fixed to the fixing block shown in Figure 3B, and Figure 3D is a front view showing another guide block connected to the guide block shown in Figure 3C. . 3E is an illustrative cross-sectional view at line I[IE-1[IE in FIG. 3A, and FIG. 3F is a cross-sectional diagram at line mF-I[IE in FIG.
[This is an illustrative cross-sectional view at F. FIG. 4 is an illustrative view showing a golf tee manufactured with the mold shown in FIG. 1. In the figure, 10 is a mold, 12 is a mold, i4 is a mold member, 6 is a mold body, 24 is a bottom material filling part, 26 is a support member,
28 is a bottle, 30 is a hole, 5o is a positioning holder, 66 is a recessed portion, 68 is a mold insertion portion, 70 is a punch, and lOO is a golf tee.

Claims (1)

[Scope of Claims] 1. A mold made of synthetic resin, having a molding material filling part for molding the molding material into a predetermined shape, and a positioning holder for removably positioning the mold at a predetermined position. Including mold. 2. A step of preparing a mold made of synthetic resin and having a molding material filling part for molding the molding material into a predetermined shape; A step of preparing a positioning holder for removably positioning the mold at a predetermined position. , positioning the mold at a predetermined position with the positioning holder, filling the molding material filling portion of the mold with molding material, removing the mold from the positioning holder, and filling the mold with the molding material. A method for producing a molded article, the method comprising the step of taking out a molded article formed from the molding material from the molding section.