JPH04211911A - Mold and manufacture of molded product for which same is used - Google Patents

Abstract

PURPOSE:To provide a mold which can improve productivity and the manufacture of a molded product for which the mold is used. CONSTITUTION:A mold 10 includes a mold 12 comprised of synthetic resin and a positioning holder 50 to position the mold 12 freely detachably to a fixed position. The mold 12 possesses a molding material filling part 24 for molding of a molding material into a fixed form. Then the manufacture of a molded product for which the mold 10 is used includes the process preparing the mold 12 and positioning holder 50, the process positioning the mold 12 to a fixed position with the positioning holder 50, a process filling the molding material such as a clayey substance into a molding material filling part 24 of the mold 12, a process removing the mold 12 from the holder 50 and the process taking out the molded product such as a golf tee formed of a molding material from the molding material filling part 50 of the mold 12.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold and a method for manufacturing a molded article using the same, for example, a mold for molding a golf tee and a method for manufacturing a molded article using the same.

0002

BACKGROUND OF THE INVENTION Conventional molded products such as golf tees, which form the background of this invention, are molded by filling a mold with a molding material, pressing it, drying and solidifying it, and then removing it from the mold.

[Problem to be solved by the invention]

However, in the conventional method of manufacturing a molded article using a mold, it is not possible to take out the molding material from the mold before the molding material is 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.

[0004] 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.

[0005]

[Means for Solving the Problems] A first invention has a molding material filling part for molding the molding material into a predetermined shape,
This mold includes a mold made of synthetic resin and a positioning holder for removably positioning the mold at a predetermined position.

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

[0007]

[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.

[0008]

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. 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,
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.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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.

[0011] This mold 10 includes a mold 12. The mold 12 includes two mold members 14, 14 of symmetrical construction, as shown in particular in FIGS. 2-4. This mold member 14 is particularly illustrated in FIG.
For example, 3 for molding the golf tee 100 shown in 1.
The mold body 16 includes two mold bodies 16. The mold body 16 includes a semi-cylindrical head 18, and a substantially semi-cylindrical leg 20 having a tapered lower end is formed at the lower end of the head 18. This leg 20
is formed to have a smaller diameter than the head 18, and an inverted semi-conical cylindrical pointed end 22 is formed at its lower end. moreover,
A very small semi-cylindrical notch 22a is formed at the lower end of the pointed end 22 to remove air during molding. Therefore, this mold body 16 holds two golf tees 100.
A molding material filling portion 24 having the same shape and size as the vertically divided portions is formed. In addition, the head 18 of the mold body 16
As shown in FIG. 4, a draft portion 24a is provided on the inner circumferential surface of the upper end portion to facilitate insertion of the punch 70.

These three mold bodies 16 are connected by, for example, a plate-shaped support member 26. In this case, the three mold bodies 16 are connected side by side and in parallel with 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 toward the protruding surface of the mold body 16, respectively. Furthermore, a pin 28 having a circular cross section and constituting one of the engaging 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 on the other end side is formed.
A hole 30 constituting the other part of the engagement means is formed with substantially the same diameter as 8.

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, by fitting the opposing pins 28 and holes 30 of the two mold members 14, 14, 3
For example, the two molding material filling portions 24 are
It has almost the same shape and size. Note that instead of the pin 28 and hole 30 as the engagement means, for example, the ends of the two mold members 14, 14 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 with reference to FIGS. 1 and 5 to 10.

The 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 5
2 and 54 are made of hard metal such as die steel or special tool steel. Further, between the two fixing blocks 52 and 54, for example, six guide blocks 56a, 56b, 56c, 56d, 56e and 5
6f are arranged side by side. These guide blocks 5
6a to 56f are made of hard metal such as die steel or special tool steel.

These guide blocks 56a to 56
Two, for example, circular through holes 57 are formed approximately at the center of f at appropriate intervals in the width direction, and slide pins 58 having a circular cross section are inserted into these through holes 57, as shown in FIG. It is slidably inserted.

Furthermore, the fixing block 52 and the guide block 56f have three fixing screws 55, for example, shown in FIG.
a, 55b and 55c. In this case, the fixing screw 55a is formed at the upper center of the fixing block 52, and the fixing screws 55b and 55c are formed at the upper center of the fixing block 52.
2 are formed at appropriate intervals at the lower center. Similarly, the fixing block 54 and the guide block 56a are
It is fixed with four fixing screws 55a, 55b and 55c. Note that these fixing blocks 52 and 54 are
A vice fixing hole 59 is provided for fixing them to a vice (not shown). This vise fixing hole 59
For example, a screw (not shown) is inserted through the fixing blocks 52 and 54, and the fixing blocks 52 and 54 are fixed to the mouth of a 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.

Furthermore, as shown in FIGS. 7 and 10, the guide blocks 56a and 56b are connected by, for example, two screws 60 as a connector. These two screws 60 are formed at intervals between the slide pins 58, 58. Also, the height from the lower end of the guide block 56a to these two screws 60 is the height of the guide block 56a.
It is formed at the same height as the height from the lower end of the slide pin 6a to the slide pin 58.

In this case, the guide block 56a has, for example, a cylindrical recessed portion 61a in its center at a predetermined length from one end (fixing block 54 side) to the other end.
is formed, and a screw hole 61b communicating with this recessed part 61a
is formed from the recessed portion 61a to the other end of the guide block 56a. Furthermore, a screw hole 61 is provided in the guide block 56b at a predetermined length on the same straight line as the screw hole 61b.
c is formed. Note that a return hole 61d for the head 60a of the screw 60 is formed in the fixing block 54. This return hole 61d is formed to have the same size as the diameter of the recessed part 61a, and is formed on the same straight line as the recessed part 61a. Then, the screw 60 is inserted through the recess 61a, and the tip 60b of the screw 60 is screwed into the screw hole 61c and fixed to the guide block 56b. 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 fixing block 54. Similarly, the guide blocks 56f and 56e are connected by two screws 60 as connectors. In addition, two screws 60 connecting guide blocks 56a and 56b,
Two screws 60 connecting guide blocks 56f and 56e are formed on the same straight line.

Further, as shown in FIGS. 8 and 10, guide blocks 56b and 56c are similarly connected by two screws 60 as connecting members. in this case,
Two screws 60 connecting guide blocks 56b and 56c are formed below the screw 60 connecting 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 portion 61a to the other end of the guide block 56b (on the guide block 56c side). Furthermore, the guide block 56c has a screw hole 6.
A screw hole 61c is formed with a predetermined length on the same straight line as 1b. Note that a return hole 61d for the head 60a of the screw 60 is formed in the guide block 56a. This return hole 61d is formed to have the same diameter as the recessed part 61a, and is formed on the same straight line as the recessed part 61a. Then, the screw 60 is inserted through this recessed portion 61a, and its tip 60
b is screwed into the screw hole 61c and the guide block 56
It is fixed at c. 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, the guide blocks 56e and 56d are connected by two screws 60 as connectors. In this case, the two screws 60 connecting guide blocks 56b and 56c and the two screws 60 connecting guide blocks 56e and 56d 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 blocks 56a and 56f each have a recess 61
The end face 61e of the screw 60 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 56b and between guide blocks 56e and 56f. Furthermore, by pulling out the fixing blocks 52 and 54, the guide blocks 56b and 56e fixed to the tips of the screws 60 are removed.
is 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, gaps are provided between guide blocks 56b and 56c and between guide blocks 56e and 56d. Further, when the fixing blocks 52 and 54 are pulled out, the guide blocks 56c and 56d fixed to the tips 60b of the screws 60 are also pulled out, thereby creating a gap between the guide blocks 56c and 56d. In this embodiment, a space of, for example, 3 mm to 5 mm is provided between each guide block 56a to 56f.

Further, two guide holes 62 are formed on the upper end surface of the fixing block 52 at appropriate intervals in the longitudinal direction.
is formed. A punch 7 is inserted into these two guide holes 62.
A guide post (not shown) connected to 0 is inserted. Therefore, the punch 70 and the positioning holder 50 are positioned.

[0024] Also, at the opposing upper portions of the six guide blocks 56a to 56f, three of the mold members 14 are provided.
Three mold insertion portions 68 are formed corresponding to the one mold body 16. These mold insertion parts 68 are for inserting and holding the mold body 16 of the mold 12 therein, and are for holding the mold body 16 of the mold 12 therein.
It is formed to have the same shape and size as the three mold bodies 16. Therefore, each mold insertion portion 68 between these guide blocks 56a to 56f has a mold main body 16 of the mold 12.
can be installed respectively.

Note that rectangular notches 64, for example, are formed at opposing upper corners of the six guide blocks 56a to 56f, respectively. Therefore, when these guide blocks 56a to 56f are connected by the slide pin 58 or the like, a rectangular recess 66 is formed by the opposing notches 64. The mold 1 is placed in this recess 66.
When the mold body 16 of No. 2 is inserted into the mold insertion portion 68, the mold main body 16 of No. 2
Both ends of the second support member 26 are inserted.

Next, the operation or operation of this mold 10 will be explained.

First, the mold 12 is mounted on the positioning holder 50. In this case, the mold body 16 of the mold 12 is inserted into the mold insertion portion 68 of the positioning holder 50, and the support member 26 of the mold 12 is inserted into the recess 66 of the positioning holder 50. In addition, in this embodiment, the fixing block 52 of the positioning holder 50
and 54 with a vise to create a gap between each guide block 56a to 56f, and
The mold 12 can be easily mounted on the positioning holder 50 by tightening the fixing blocks 52 and 54 again with a vise.

Then, in the molding material filling part 24 of the mold 12,
The golf tee 100 is filled with a molding material such as a clay-like substance. Then, after pressurizing the molding material in the molding material filling portion 24 from above with the push-in pin 72 of the punch 70, the push-in pin 72 is removed from the mold 12.

Next, the mold 12 is removed from the positioning holder 50. In this case, if a gap is created between each guide block 56a to 56f by pulling out the fixing blocks 52 and 54 of the positioning holder 50 with a vise,
The mold 12 can be easily removed from the positioning holder 50.

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 it is possible to attach the mold 12 to the positioning holder 50 and to apply the molding material to the mold 12. Filling and removal of the mold 12 from the positioning holder 50 can be carried out continuously. Therefore, when manufacturing a large quantity of molded products, the manufacturing time per molded product can be shortened.

Furthermore, the mold 12 has two mold members 14, 14.
Since the molded product can be divided into two parts, the molded product that is in close contact with the mold 12 can be easily taken out from the mold 12. in this case,
Since both ends 26a and 26b of the support member 26 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. can.

[0033] In the above embodiments, a golf tee was used as an example of the molded product, but the present invention can be applied to other molded products.

[Brief explanation of the drawing]

FIG. 1 is an illustrative view of main parts showing an embodiment of the present invention.

FIG. 2 is a front view of a mold used in the mold shown in FIG. 1;

3 is a plan view of a mold used in the mold shown in FIG. 1. FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 2;

FIG. 5 is a plan view showing a positioning holder for positioning the mold shown in FIGS. 2 to 4;

FIG. 6 is a front view showing the fixing block.

7 is a front view showing a guide block fixed to the fixing block shown in FIG. 6. FIG.

8 is a front view showing another guide block connected to the guide block shown in FIG. 7. FIG.

9 is an illustrative cross-sectional view taken along line IX-IX in FIG. 5. FIG.

FIG. 10 is an illustrative cross-sectional view taken along line XX in FIG. 5;

11 is an illustrative view showing a golf tee manufactured with the mold shown in FIG. 1. FIG.

[Explanation of symbols]

10 Mold 12 type 14 Mold member 16 Type body 24 Molding material filling part 26 Support member 28 pin 30 holes 50 Positioning holder 66 Recess 68 Mold insertion part 70 Punch 100 Golf tee

Claims (2)

[Claims] 1. A mold comprising 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. 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, and a positioning holder for removably positioning the mold at a predetermined position. a step of positioning the mold at a predetermined position with the 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 removing the mold from the positioning holder. A method for manufacturing a molded article, including the step of taking out a molded article formed from the molding material from the molding material filling section.