JPH04128816U - mold - Google Patents

Abstract

(57) [Summary] [Purpose] Insert parts 2 with multiple split molds 1 and 4
1, and the molding material is bonded to a predetermined location of the insert part 21 at the same time as the molding, the actual thickness of the sandwiched part of the insert part 21 is the design value c.
Even if the insert part 21 is smaller, the insert part 21 is reliably held and the molding material is prevented from going around to unnecessary parts. [Structure] The distance b between the positioning surface 2 of the first divided mold 1 and the pressing surface 5 of the third divided mold 4 is set smaller than the design value c, and the distance b is smaller than the actual thickness. The third split mold 4 is moved along tapered surfaces 6 and 7 provided at the contact portion between the third split mold 4 and the second split mold 3.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention enables molding materials such as rubber to be applied to predetermined locations of insert parts at the same time as molding. This invention relates to improvements in molds that adhere to.

0002

[Conventional technology]

For example, when molding the molded product shown in Figure 4, conventionally the mold shown in Figure 5 is used. has been done. The molded product shown in Fig. 4 is specifically a rubber baked washer, and is a ring-shaped metal washer. An annular rubber 22 is baked onto the inner peripheral side of the washer 21 made of metal. Figure 5 mold is equipped with a plurality of split molds, and in particular two of these split molds 11 and 12 are used to insert the insert. The washer 21, which is a seat part, is held between the upper and lower sides. 13 is a game 14 is a cavity.

0003

[Problem that the idea aims to solve]

The above conventional technology has the following problems. In other words, as shown in the enlarged view in Figure 6, the washer If the thickness a of the washer 21 is smaller than the design value, the washer 21 may be attached to the split molds 11 and 12. Therefore, a gap 15 is created between the washer 21 and the split mold 12 without being pinched, and the molding material A part of the molding material enters this gap 15 and is bonded to the entire end surface of the washer 21. Because it is glued to a part other than the designated part of the washer 21, it is difficult to finish it in the later finishing process. The molding material must then be removed.

0004

[Means to solve the problem]

In view of the above points, the present invention has been devised to solve the problems seen in the above-mentioned conventional technology. In order to achieve this purpose, insert parts are manufactured using multiple split dies. The molding material is bonded to a predetermined location of the insert part at the same time as the molding material is molded. In the mold, the first part is formed with a positioning surface for positioning the insert part. 1 split mold, and a split mold placed on the opposite side of the insert part with respect to the first split mold. a second split mold that is disposed on the same side as the second split mold, and the insert portion a third split mold forming a pressing surface for pressing the product, the second split mold and the front The third split mold is in contact with each other, and the clamping force is transferred from the second split mold to the third split mold. forming a pair of tapered surfaces that transmit information to the split mold, and forming a pair of tapered surfaces between the positioning surface and the pressing surface. The gap was set smaller than the design value for the thickness of the sandwiched part of the insert part. To provide a mold characterized by the following.

[0005]

[Effect]

The mold of the present invention having the above configuration has a positioning surface of the first divided mold and a third divided mold. The insert part is held between the pressing surface of the mold, and the positioning surface and The distance from the pressing surface is smaller than the design value for the thickness of the sandwiched part of the insert part. Because of this setting, the actual thickness of the clamped part may differ from the design value within the range of this setting. Insert parts can be held even if they are small. The third split type is sandwiched It slides on a pair of tapered surfaces against the second split mold according to the actual thickness of the holding part, and clamps the mold. complete the process.

[0006]

【Example】

Next, an embodiment of the present invention will be explained according to the drawings. The molded product shown in Fig. 4 is molded in the same way as the previous technology, and the following is applied to the mold shown in Fig. 5. It has the characteristics of

[0007] That is, as shown in FIG. and a positioning surface 2 for supporting the washer 21 and positioning the washer 21. 1 split mold 1, a second split mold 3 placed above the washer 21, and the washer 2 A third portion is disposed above 1 and forms a pressing surface 5 that presses the washer 21 from above. A split mold 4 is provided. The second split mold 3 and the third split mold 4 are each annular. be. A clamping force is applied to the contact area between the second split mold 3 and the third split mold 4. A pair of tapered surfaces 6 and 7 are formed to transmit the information from The surfaces 6 and 7 are arranged in this positional relationship where the third split mold 4 is placed on the outer peripheral side of the second split mold 3. In this case, the diameter is gradually reduced from the top to the bottom. position The distance b between the deciding surface 2 and the pressing surface 5 is determined by the thickness of the washer 21, as shown in an enlarged view in FIG. is set smaller than the design value c (b<c).

[0008] The second split mold 3 and the third split mold 4 are arranged in a pair of tapered surfaces 6 and 7 in the direction of the arrow. In other words, the distance b between the positioning surface 2 and the pressing surface 5 is the actual thickness of the washer 21. a (Fig. 6), the third split mold 4 moves along the tapered surfaces 6 and 7 in the outer circumferential direction. Move to. The annular third split mold 4 moves in the outer circumferential direction because the third split mold 4 moves in the outer circumferential direction. 4 comes into contact with the washer 21 and stops the mold clamping movement, but the second split mold 3 Continuing the tightening movement, the second split mold 3 wraps around the third split mold 4 with the tapered surfaces 6 and 7. This is because it is pushed outward in the direction of the outer periphery. toward the outer circumference of this third split mold 4. There are gaps on the outer periphery and on the upper side of the third split mold 4 so as not to obstruct the movement of the parts. 8 and 9 are provided.

[0009] The mold having the above configuration includes a positioning surface 2 of the first divided mold 1 and a third divided mold 4. The washer 21 is held between the pressing surface 5 of the to the inner peripheral side of the washer 21, and as described above, the third split mold 4 acts to absorb the dimensional error of the washer 21, the actual thickness of the washer 21 is Even if the width a is smaller than the design value c, the washer 21 can be securely held and the excess rubber can be removed. It is possible to prevent it from going around.

0010 In the above embodiment, the pair of tapered surfaces 6 and 7 are initially flat with the same inclination angle. However, as shown in Figure 3, line contact is made with an angle θ relative to the You may also do so. When the tapered surfaces 6 and 7 come into line contact, the contact pressure is concentrated and the rubber becomes tapered. Intrusion between the outer surfaces 6 and 7 can be effectively prevented.

[0011]

[Effect of the idea]

The present invention has the following effects. In other words, the third split mold has the dimensions of the insert part. Actual thickness of the clamped part of the insert part to act to absorb errors. The insert part can be securely clamped even if the This can prevent it from going around the place.

[Brief explanation of drawings]

[Fig. 1] Half-cut sectional view of a mold according to an embodiment of the present invention

[Figure 2] Enlarged cross-sectional view of main parts of the same mold

[Fig. 3] Enlarged sectional view of main parts of a mold according to another embodiment of the present invention

[Figure 4] Half-cut cross-sectional view of molded product

[Fig. 5] Half-cut sectional view of a mold according to a conventional example

[Figure 6] Enlarged cross-sectional view of main parts of the same mold

[Explanation of symbols]

1 First split type 2 Positioning surface 3 Second split type 4 Third split type 5 Pressure surface 6,7 Tapered surface 8,9 Gap 13 Gate 14 Cavity 21 Washer (insert part) 22 Rubber

Claims (1)

[Scope of utility model registration request] 1. A molding die in which an insert part 21 is held between a plurality of split molds 1 and 4, and a molding material is bonded to a predetermined location of the insert part 21 at the same time as the molding.
a first divided mold 1 forming a positioning surface 2 for positioning the insert component 21; a second divided mold 3 disposed on the opposite side of the insert component 21 with respect to the first divided mold 1; disposed on the same side as the second split mold 3,
a third divided mold 4 formed with a pressing surface 5 for pressing the insert part 21, the second divided mold 3 and the third divided mold 4 are in contact with each other, and a clamping force is applied to the second divided mold 3 and the third divided mold 4. A pair of tapered surfaces 6 and 7 are formed to transmit the pressure from the second split mold 3 to the third split mold 4, and the distance b between the positioning surface 2 and the pressing surface 5 is adjusted to the extent that the insert part 21 is covered. A molding die characterized in that the thickness of the clamping portion is set smaller than the design value c.