JPH0642141U - Mold locate ring protection cap - Google Patents

Abstract

(57) [Summary] [Purpose] By covering the mold locate ring with a protective cap, the mold can be managed easily and surely, and the locate ring can be easily removed and the sprue Surely prevent clogging of dust. A plastic protective cap 7 attached to a locate ring 3 protruding from an upper surface 2 of a mold 1, which is an upper surface portion 8 for covering the upper surface 5 of the locate ring 3.
A side surface portion 9 integrally formed with the upper surface portion 8 and elastically pressed against the outer surface 4 of the locate ring 3 is provided, and an inner side surface 11 provided on a part of the upper surface portion 8 for entering management items. Locate ring protection cap.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a protective cap for a locate ring provided on a mold.

[0002]

[Prior art]

 In plastic injection molding, the mold attached to the injection molding machine is replaced each time the product is different.At that time, the center of the mold, that is, the sprue position of the mold is aligned with the nozzle of the resin material heating device on the same axis. Must match. In general molds, a locating ring is projected on the center axis of the mold to facilitate positioning of the center of the mold, and the locate ring is fitted into the reference hole provided on the injection molding machine side. The molds were positioned by matching them.

[0003]

[Problems to be solved by the device]

 By the way, in injection molding specialized factories, many molds must be owned, so it is necessary to manage and store the molds appropriately. However, the conventional method of managing and storing molds is, for example, inserting a pin with a management slip into a sprue that is opened on the upper surface of the mold from above the locate ring, or by using an oil-based pen. It was just to write predetermined management items on the surface of the mold.

As a result, the former management means has a problem that the pin may be accidentally pulled out from the sprue, or the sprue may be damaged by the pin. In addition, the latter management method has a problem that the management items written by Magic are erased while the mold is moved. In addition, if the mold is stored poorly, leaving the locate ring exposed may cause problems such as the mold sprue being clogged with dust or debris, or the locate ring may be more difficult than the mold. While traveling, there is a risk that the locate ring may hit other obstacles and lose some of them, which causes problems when positioning the mold.

Therefore, the technical problem to be solved by the present invention is that the mold can be managed by a simple means and surely when the mold is stored, and the locate ring is not damaged. Is to protect.

[0006]

[Means for Solving the Problems]

 The protective cap for the locate ring of the mold according to the present invention is a plastic protective cap that is attached to the locate ring protruding from the surface of the mold, and includes a covering portion that covers the locate ring and an integral part of the covering portion. It is characterized in that it is provided with a fixing portion formed on the locating ring elastically in pressure contact with the locating ring, and a management item entry surface provided on a part of the covering portion.

[0007]

[Action]

 According to the above-mentioned means, the protective cap is put on the locate ring, and the fixed portion is elastically pressed to the locate ring to surely attach it, and when removing it, just pull up the end of the protective cap. So you can take it easily. Furthermore, by simply entering the mold management items on the protective cap, it is possible to perform reliable management for each mold.

[0008]

【Example】

 Hereinafter, an embodiment of a protective cap for a locate ring according to the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the mold 1 is provided with a cylindrical locate ring 3 on a surface 2 (upper surface) facing a resin material heating device (not shown). The locate ring 3 has an outer side surface 4 and a flat upper surface 5 which serve as a reference surface when the mold 1 is positioned, and the center of the locate ring 3 coincides with the sprue 6 of the mold 1. It is attached to the mold 1.

As shown in FIGS. 1 to 3, the protective cap 7 is a disc-shaped lid formed by resin molding, and is attached by covering the locate ring 3 from above. ing. Specifically, a disc-shaped upper surface portion 8 that covers the upper surface 5 of the locate ring 3, and a side surface portion 9 that is formed as a downward vertical wall around the upper surface portion 8 and that covers the outer side surface 4 of the locate ring 3. It is composed of.

The inner surface 11 of the upper surface portion 8 is slightly recessed as compared with the outer peripheral surface 10. In addition, in this embodiment, the inner side surface 11 has a satin finish and is formed as a matte surface with fine irregularities. The inner side surface 11 is used as an entry surface for entering various management items when the die 1 is managed, and in order to make it particularly easy to use in this embodiment, as shown in FIG. , The horizontal direction is divided into two frames, and the vertical direction is divided into four frames, and the characters of the management items such as manufacturer name, model name, product name, and charge are pre-filled in the left side frame from the top. Therefore, the operator can easily and surely manage by simply entering the specifications corresponding to the management items with an oil-based pen or the like in the right side frame according to this item. It should be noted that the management items such as the manufacturer's name and the horizontal ruled lines 16 forming the frame are formed together when the protective cap 7 is molded.

The side surface portion 9 is provided along the entire outer periphery of the upper surface portion 8 described above, and has semi-circular recessed portions 12 formed at predetermined intervals. . The recess 12 has an elastic action, and as shown in FIGS. 4 and 5, when the protective ring 7 is pushed over the locate ring 3, the recess 12 is formed on the outer peripheral side of the locate ring 3. The back surface side of the locating ring 3 is fitted, and the recess 12 is elastically pressed against the outer side surface 4 of the locating ring 3 to be fixed to the locating ring 3. Since the recess 12 constantly elastically presses the outer side surface 4 of the locate ring 3, the protective cap 7 does not easily come off from the locate ring 3.

Further, as shown in FIGS. 2 and 3, the protective cap 7 according to this embodiment is provided with a tongue piece 13 extending horizontally from a part of the side surface portion 9. The tongue piece 13 has a structure in which a V-shaped groove 14 is provided on the front side of the base end portion and a through hole 15 is opened in the upper portion. Therefore, when a large number of protective caps 7 are to be stored in a predetermined space, the V-shaped groove 14 acts as a resin hinge and the tongue piece 13 is folded inward as shown in FIG. In addition, the mold 1 can be stored in a large amount, and when the mold 1 is used, the protection cap 7 can be easily removed from the locate ring 3 by grasping the tongue piece 13 and pulling it up as it is. If the cap 7 is hung at a predetermined position using the through hole 15 of the tongue piece 13, the protective cap 7 will not be lost when the mold 1 is used.

Therefore, according to this embodiment, after the necessary management items are entered on the upper surface 8 of the protective cap 7 determined for each mold 1, the locate ring 3 of the mold 1 is covered with this from above. By pushing in a little, the recessed portion 12 is pushed out a little by the elastic action, and as shown in FIG. 5, the recessed portion 12 is closely attached to the side surface portion 9 of the locate ring 3. Since the protective cap 7 is fixed to the locate ring 3 by the elastic action of the recess 12, the protective cap 7 does not easily come off even if it hits another object when the mold 1 is moved. As a result, As a result, the locate ring 3 will not be lost. Further, since the upper surface 5 of the locate ring 3 is covered and hidden by the upper surface portion 8 of the protective cap 7, the sprue 6 of the mold 1 will not be clogged with dust. Moreover, in the above-mentioned embodiment, since the upper surface portion 8 of the protective cap 7 has a satin finish, there is no fear that the entered items will be easily erased. In addition, since the satin-finished inner side surface 11 is formed one step lower than the outer peripheral surface 10, the entry surface is less likely to become dirty, and an item once entered does not become unrecognizable due to dirt.

The protective cap 7 according to the above-described embodiment has been described with respect to the example in which a plurality of the recessed portions 12 are provided over the entire circumference of the side surface portion 9, but at least one protective cap 7 may be provided, and the shape thereof is also set. As long as it is fixed to the locate ring 3, it need not be a semicircular recess as described above. Further, in the previous embodiment, the case where the side surface portion 9 is provided on the entire circumference of the upper surface portion 8 has been described, but the side surface portion 9 does not necessarily have to be provided on the entire circumference, and is provided at a predetermined interval. It may have a function of holding the ring 3. In this case, the side surface 9 plate itself can be made to have an elastic action without providing the recess 12 as in the above embodiment.

Furthermore, even if the protective cap 7 according to the present invention does not have the upper surface portion 8 and the side surface portion 9 as described above, as long as it has a structure for covering the locate ring 3, Of course, the shape is not limited to the above. Further, it goes without saying that the items of management items are not limited to those of the above-mentioned embodiment. Further, according to the present invention, the protective caps 7 of various colors are prepared, and the mold 1 is color-coded in accordance with the entry of the above management items, so that the management is further facilitated.

[0016]

[Effect of device]

 As described above, according to the protective cap for the locate ring of the mold according to the present invention, the mold can be managed easily and surely by only covering the locate ring. This has the effect of reliably preventing the missing locating ring and clogging of the sprue with dust.

[Brief description of drawings]

FIG. 1 is a perspective view showing a locate ring of a mold and a protective cap according to the present invention.

FIG. 2 is a perspective view of a protective cap according to the present invention.

3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a cross-sectional view when a locate cap of a mold is covered with a protective cap.

5 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Mold 3 Locate Ring 4 Outside of Locate Ring 5 Top of Locate Ring 7 Protective Cap 8 Top (Coating) 9 Side (Coating) 11 Inner Side (Filling Surface) 12 Recess (Fixing)

Claims (2)

[Scope of utility model registration request] 1. A plastic protective cap that is attached to a locate ring that protrudes from the surface of a mold, the cover portion covering the locate ring, and the locate ring elastically formed on the locate ring integrally with the cover portion. A locate ring protection cap for a mold, comprising: a fixing portion that is pressed into contact with the control portion; 2. The locate ring protection cap for a mold according to claim 1, wherein the writing surface is provided with fine irregularities.