JPH05417U - Injection mold - Google Patents

Abstract

(57) [Summary] [Construction] The fixed mold 1 is provided with a mold release block 13, and the mold release block 13 is designed such that the molded product 2 can be pushed out and released by the restoring force of the spring 14 when the mold is opened. A concave groove 132 is provided on the sliding surface 131 of the mold block 13. [Effect] The groove 1 is formed on the sliding surface 131 of the release block 13.
Since 32 is provided, the area of friction is reduced,
The release block 13 slides smoothly, and the molded product 2 is released smoothly.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a mold for injection molding, which includes a fixed mold and a movable mold. This is to ensure smooth operation.

[0002]

[Prior art]

  Conventionally, in the case of injection molding dies consisting of a fixed mold and a movable mold, particularly complicated shapes When molding a molded product, a fixed mold and a mold are At least one of the movable molds is opened by the mold and by the restoring force of the spring. Known is one that has a release block that slides from the body to release the molded product from the mold surface. Has been.

[0003]   The restoring force of such a spring slides from the mold body to release the molded product from the mold surface. If a release block is provided, the inclined pin is used to operate the release block. And mold to avoid using combination with slide core or hydraulic cylinder It has the advantage of being simple in structure and has been frequently used.

[0004]

[Problems to be solved by the device]

  However, in this type of conventional injection molding die, the restoring force of the spring is large. There is a natural limit to the size, and the release block does not operate smoothly, which is why molded products There was a problem that the mold release was incomplete and cheap.

[0005]   The present invention has been made in view of such problems in the conventional injection mold. The purpose is to solve the above problems and the release block is a circle. An object of the present invention is to provide an injection molding die that operates smoothly.

[0006]

[Means for Solving the Problems]

  In order to achieve the above-mentioned object, in the present invention injection molding mold waste container,   Sliding surface of the mold release block with the mold body or separation of the mold body provided with the mold release block The sliding surface with the mold block has a groove parallel to the sliding direction of the mold release block. It is characterized by that.

[0007]   In the present invention, one or a plurality of recessed grooves are provided on the mold release block or the mold body. You can get rid of it.   The release block may be provided in either a fixed type or a movable type.

[0008]

[Action]

  In the mold for injection molding of the present invention, the slide surface of the mold release block and the mold body are separated from each other. The sliding surface of the mold body provided with the mold block with the mold release block is parallel to the sliding direction. Since the groove is provided, friction on the sliding surface is reduced and the release block Operates smoothly.

[0009]

【Example】

  Next, an embodiment of the present invention will be described with reference to the drawings.   FIG. 1 is a sectional view showing an example of a mold for injection molding of the present invention, and FIG. 2 is a perspective view of a release block. FIG. 3 and FIG. 3 are enlarged cross-sectional views of essential parts showing a state in which the movable die is slightly opened.

[0010]   In these figures, 1 is a fixed type, 11 is a mounting plate of the fixed type 1, and 12 is a mounting plate 1. 1 is a locate ring provided on the fixed mold 1 and 13 is a release block provided on the fixed mold 1. Thus, part of the release block 13 forms a mold surface. The mold release block 13 opens the mold At the same time, the molded product 2 is released by sliding due to the restoring force of the compression coil spring 14. Has become. The slide surface 131 of the release block 13 is provided with a plurality of recessed grooves 132. Has been.

[0011]   3 is a movable die, 31 is a core provided in the movable die 3, and the movable die 3 is a fixed die 1. In the state where the molds are in close contact with each other, a molded product is provided between the mold surface of the fixed mold 1 and the mold surface of the movable mold 3. A cavity 4 corresponding to the outer shape of 2 is provided. Incidentally, 32 is the mounting of the movable die 3. A plate, 33 is an ejector pin, and 34 is a mounting plate for the ejector pin 33. [Operation of Example]   As shown in FIG. 1, when the movable mold 3 is in close contact with the fixed mold 1 and the mold is closed, the mold release block The tip of the lock 13 hits the movable die 3 against the restoring force of the compression coil spring 14. The mold release block 13 is in the retracted position, and a part of the mold release block 13 and the fixed mold 1 And a cavity corresponding to the outer shape of the molded product 2 to be molded by each mold surface of the movable mold 3. Tee 4 is formed.

[0012]   Next, the molten resin is injected into the cavity 4 and the molten resin is injected into the cavity 4. After being filled and the molten resin has been cooled and solidified, the movable mold 3 is retracted to open the mold, The molded product 2 in the bite 4 is in close contact with the core 31 of the movable mold 3 and the fixed mold 1 together with the movable mold 3. However, at this time, the release block 13 causes the compression force of the compression coil spring 14 to be restored. The flange portion 21 of the molded product 2 is extruded from the mold surface of the fixed mold 1 by Helps release from standard 1 The release block 13 is used for the restoring force of the compression coil spring 14. Mold release block when the flange portion 21 of the molded product 2 is pushed out from the mold surface of the fixed mold 1 The sliding surface 131 of 13 slides on the main body of the fixed mold 1. Since 32 is provided, sliding is performed smoothly with few friction surfaces.

[0013]

[Effect of device]

  In the mold for injection molding of the present invention, the slide surface of the mold release block and the mold body are separated from each other. The sliding surface of the mold body provided with the mold block with the mold release block is parallel to the sliding direction. Since the groove is provided, friction on the sliding surface is reduced and the release block It operates smoothly, and even molded products with complicated shapes can be released reliably.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of an injection molding die of the present invention.

FIG. 2 is a perspective view of a release block.

FIG. 3 is an enlarged sectional view of an essential part showing a state where the movable die is slightly opened.

[Explanation of symbols]

1 fixed type 13 Release block 131 sliding surface 132 groove 14 spring 3 mobile

Claims (2)

[Scope of utility model registration request] 1. An injection molding die comprising a fixed die and a movable die, wherein at least one of the fixed die and the movable die is opened and a molded article is slid from a die body by a restoring force of a spring. A mold for injection molding, comprising a release block for releasing from a mold surface, and a groove parallel to the sliding direction is provided on a sliding surface of the mold block with respect to the mold body. 2. An injection molding die comprising a fixed die and a movable die, wherein at least one of the fixed die and the movable die is opened from the die and slid from the die body by a restoring force of a spring to form a molded article. A mold releasing block for releasing the mold surface from the mold surface is provided, and a concave groove parallel to the sliding direction with the mold releasing block is provided on the sliding surface of the mold body provided with the mold releasing block. Mold for injection molding.