Demolding assembly for injection molding

Abstract

The demolding assembly comprises a movable mold plate, a fixed mold plate, a stripper plate, connecting plates and a sprue puller, the movable mold plate and the fixed mold plate are oppositely arranged up and down, a forming cavity is formed in the upper surface of the fixed mold plate in a concave mode, the stripper plate is horizontally arranged in the forming cavity, the connecting rods comprise the first connecting rod and the second connecting rod, and the sprue puller is arranged on the first connecting rod and the second connecting rod. The first connecting rod is perpendicularly fixed to the stripper plate, the second connecting rod is perpendicularly fixed to the top of the first connecting rod, a longitudinally-through positioning hole is formed in the second connecting rod, and the material pulling rod is perpendicularly fixed to the lower surface of the movable mold plate and penetrates through the positioning hole to be correspondingly connected with the second connecting rod. And a first avoiding hole corresponding to the sprue puller is formed in the fixed mold plate. Through the mode, the demolding assembly for injection molding can directly realize demolding of an injection molding part during mold opening, can automatically finish positioning during mold closing, and is convenient to disassemble and maintain.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to a demoulding component for injection molding. Background Art

[0002] In the process of plastic injection molding, injection molds are indispensable. The injection mold consists of a fixed mold and a movable mold. After the molds are closed, the molten plastic is input into the mold cavity composed of the fixed mold and the movable mold, and the plastic parts are cooled and solidified. Finally, the mold is opened to take out the plastic parts.

[0003] At present, ejectors are usually used to remove plastic parts from molds. The ejectors have a small force area when used, and defects are easily caused when ejecting parts of the injection molded parts, affecting the overall appearance of the injection molded parts. In addition, the ejectors need to disassemble multiple templates during maintenance, which is inconvenient to load and unload. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a demoulding component for injection molding, which can directly realize the demoulding of the injection molded part when the mold is opened, can automatically complete the positioning when the mold is closed, and can be conveniently disassembled and repaired.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a demolding assembly for injection molding, including a movable template, a fixed template, a stripper plate, a connecting plate and a pulling rod, the movable template and the fixed template are arranged relatively to each other up and down, the upper surface of the fixed template is concavely provided with a molding cavity, the stripper plate is horizontally arranged in the molding cavity, the connecting plate includes a first connecting plate and a second connecting plate, the first connecting plate is vertically fixed on the stripper plate, the second connecting plate is vertically fixed on the top of the first connecting plate, the second connecting plate is provided with a longitudinally penetrating positioning hole, the pulling rod is vertically fixed to the lower surface of the movable template and passes through the positioning hole to be connected with the second connecting plate, and the fixed template is provided with a first avoidance hole corresponding to the pulling rod.

[0006] In a preferred embodiment of the present invention, a plurality of molding cavities are provided.

[0007] In a preferred embodiment of the present invention, a plurality of stripping plates are provided and correspond one-to-one with the forming cavities.

[0008] In a preferred embodiment of the present invention, a first connecting plate is provided on any of the stripping plates, and a plurality of the first connecting plates are commonly connected to a second connecting plate.

[0009] In a preferred embodiment of the present invention, a first embedding groove is concavely provided in the side wall of the molding cavity corresponding to the first connecting plate.

[0010] In a preferred embodiment of the present invention, the upper surface of the fixed template is provided with a second embedding groove corresponding to the second connecting plate.

[0011] In a preferred embodiment of the present invention, a supporting block located below the second connecting plate is provided at the bottom of the pulling rod.

[0012] In a preferred embodiment of the utility model, the movable template is further provided with guide rods on both sides of the drawing rod.

[0013] In a preferred embodiment of the present invention, a guide hole corresponding to the guide rod is provided on the second connecting plate, and a second avoidance hole corresponding to the guide rod is provided on the fixed template.

[0014] The beneficial effects of the utility model are as follows: the demoulding assembly for injection molding disclosed by the utility model can directly realize the demoulding of the injection molded part when the mold is opened, can automatically complete the positioning when the mold is closed, can be conveniently disassembled, and is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0016] Figure 1 The utility model is a structural schematic diagram of a preferred embodiment of a demoulding component for injection molding. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1 , the utility model embodiment includes:

[0019] A demoulding assembly for injection molding comprises a movable mold plate 1, a fixed mold plate 2, a stripping plate 3, a connecting plate and a pulling rod 4. The movable mold plate 1 and the fixed mold plate 2 are arranged opposite to each other up and down.

[0020] The upper surface of the fixed mold plate 2 is concavely provided with a plurality of molding cavities 5 for molding a plurality of injection molded parts by one mold.

[0021] The stripping plates 3 are provided in plurality and correspond to the forming cavities 5 one by one. The stripping plates 3 are arranged in a contour with the forming cavities 5 , and different stripping plates 3 are designed as required.

[0022] The connecting plate includes a first connecting plate 6 and a second connecting plate 7. The first connecting plate 6 is provided in plurality and is vertically fixed one by one on a plurality of stripping plates 3. Specifically, the first connecting plate 6 is connected to the side of the stripping plate 3. The side wall of any of the molding cavities 5 is concavely provided with a first embedding groove 8 corresponding to the first connecting plate 6 to avoid affecting the molding shape of the injection molded parts.

[0023] The second connecting plate 7 is vertically fixedly connected to the top of the plurality of first connecting plates 6 and is connected to the plurality of stripping plates 3. The upper surface of the fixed plate 2 is provided with a second embedding groove 9 corresponding to the second connecting plate 7 to avoid affecting the pressing between the movable plate 1 and the fixed plate 2.

[0024] The second connecting plate 7 is provided with a longitudinally penetrating positioning hole 10, the drawing rod 4 is vertically fixed on the lower surface of the movable template 1 and passes through the positioning hole 10 to be connected with the second connecting plate 7, the bottom of the drawing rod 4 is provided with a support block 11 located below the second connecting plate 7, the drawing rod 4 lifts the second connecting plate 7 through the support block 11 when lifting, and the fixed template 2 is provided with a first avoidance hole 12 corresponding to the drawing rod 4 for easy pressing. The support block 11 and the drawing rod 4 are threadedly connected, which is convenient for loading and unloading.

[0025] The movable template 1 is also provided with guide rods 13 on both sides of the pulling rod 4, the second connecting plate 7 is provided with guide holes 14 corresponding to the guide rods 13, and the fixed template 2 is provided with second avoidance holes 15 corresponding to the guide rods 13, which are used for guiding the second connecting plate 7 when it is raised and lowered, and at the same time ensuring the positioning accuracy.

[0026] In summary, the demoulding assembly for injection molding disclosed in the utility model can directly realize the demoulding of the injection molded part when the mold is opened, can complete the positioning by itself when the mold is closed, and can be easily disassembled and repaired.

[0027] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A demoulding assembly for injection molding, characterized in that: It includes a movable template, a fixed template, a stripper plate, a connecting plate and a pulling rod. The movable template and the fixed template are arranged opposite to each other up and down. A forming cavity is concavely arranged on the upper surface of the fixed template. The stripper plate is horizontally arranged in the forming cavity. The connecting plate includes a first connecting plate and a second connecting plate. The first connecting plate is vertically fixed on the stripper plate, and the second connecting plate is vertically fixed on the top of the first connecting plate. A longitudinal positioning hole is arranged on the second connecting plate. The pulling rod is vertically fixed on the lower surface of the movable template and passes through the positioning hole to be connected with the second connecting plate accordingly. The fixed template is provided with a first avoidance hole corresponding to the pulling rod.

2. The demoulding assembly for injection molding according to claim 1, characterized in that: The molding cavity is provided in plurality.

3. The demoulding assembly for injection molding according to claim 2, characterized in that: The stripping plates are provided in plurality and correspond one to one with the forming cavities.

4. The demoulding assembly for injection molding according to claim 3, characterized in that: A first connecting plate is provided on any of the stripping plates, and a plurality of the first connecting plates are commonly connected to a second connecting plate.

5. The demoulding assembly for injection molding according to claim 1, characterized in that: The side wall of the molding cavity is concavely provided with a first embedding groove corresponding to the first connecting plate.

6. The demoulding assembly for injection molding according to claim 1, characterized in that: The upper surface of the fixed template is provided with a second embedding groove corresponding to the second connecting plate.

7. The demolding assembly for injection molding according to claim 1, characterized in that: A supporting block located below the second connecting plate is arranged at the bottom of the pulling rod.

8. The demoulding assembly for injection molding according to claim 1, characterized in that: The movable template is also provided with guide rods on both sides of the drawing rod.

9. The demoulding assembly for injection molding according to claim 8, characterized in that: The second connecting plate is provided with a guide hole corresponding to the guide rod, and the fixed template is provided with a second avoidance hole corresponding to the guide rod.

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