Rapid demolding structure for injection molding shell

Abstract

The utility model discloses a quick demolding structure for an injection molding shell, which relates to the technical field of injection molds and comprises a base, a mold is mounted on the inner wall of the base, an extrusion block is mounted on the outer wall of the mold, a positioning rod is mounted at the bottom of the mold, and a reset rod is mounted on the side wall of the extrusion block. The outer wall of the reset rod is provided with an extrusion spring, the top of the base is provided with a support, the top of the support is provided with an electric air cylinder, the inner wall of the support is provided with a limiting rod, the bottom of the limiting rod is provided with a pressing head, and the side wall of the base is provided with a fixing frame. According to the utility model, through the arrangement of the stock bin, the transmission motor and the blanking rod, raw materials needing injection molding are put into the stock bin, and then the blanking rod is driven by the transmission motor to rotate according to the set fixed number of turns, so that the quantitative and accurate blanking of the injection molding raw materials is realized, and the phenomenon of overflow waste in the compression molding process caused by excessive blanking is avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a quick demolding structure for injection molded shells. Background Technology

[0002] In the field of injection molding, the production of injection-molded shells is a very common process. After injection molding, the molded shell needs to be ejected from the mold cavity. However, the existing demolding method is to eject the molded shell by ejector pins. However, the ejector pins are relatively thin, and when ejecting the shell, the stress on the pin head is concentrated, which can easily cause cracks, deformation and other damage to the shell. At the same time, during the injection molding process, manual injection cannot accurately control the amount of raw materials. When feeding, the excess material will be squeezed out by the mold, resulting in overflow and waste. To solve the above problems, a quick demolding structure for injection-molded shells is needed.

[0003] The existing demolding structure for injection molded shells has problems such as being unable to demold quickly and being unable to feed materials quantitatively during operation. Therefore, there is an urgent need for a rapid demolding structure for injection molded shells. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a quick demolding structure for injection molded shells, so as to solve the problems that existing demolding structures for injection molded shells cannot demold quickly or feed materials quantitatively during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick demolding structure for injection-molded shells, comprising a base, a mold mounted on the inner wall of the base, an extrusion block mounted on the outer wall of the mold, a positioning rod mounted on the bottom of the mold, a reset rod mounted on the side wall of the extrusion block, a compression spring mounted on the outer wall of the reset rod, a bracket mounted on the top of the base, an electric cylinder mounted on the top of the bracket, a limit rod mounted on the inner wall of the bracket, a pressure head mounted on the bottom of the limit rod, a fixing frame mounted on the side wall of the base, a material hopper mounted on the inner wall of the fixing frame, a drive motor mounted on the top of the material hopper, and a feeding rod mounted on the bottom of the drive motor.

[0006] Preferably, the extrusion blocks are arranged symmetrically around the central axis of the mold, and the mold and the extrusion blocks are movably connected.

[0007] Preferably, the compression block forms a telescopic structure with the base via a compression spring, and the reset rod is movably connected to the base.

[0008] Preferably, the bracket is welded to the base, and the outer diameter of the pressure head matches the outer diameter of the mold.

[0009] Preferably, the pressure head is telescopically connected to the support via an electric cylinder, and the pressure head is in close contact with the mold.

[0010] Preferably, the hopper is engaged with the fixed frame, and the feeding rod forms a rotating structure with the hopper via a drive motor.

[0011] Preferably, the feeding rod is spirally arranged and is tightly fitted to the inner wall of the hopper.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the setting of a base, mold, extrusion block, positioning rod, reset rod, extrusion spring, bracket, electric cylinder, limit rod, pressure head, and fixing frame, places the injection molding material into the base and covers the mold. Then, the electric cylinder controls the pressure head to press down. During the pressing process, the pressure head will squeeze the mold downward, while the extrusion block slides with the mold and squeezes to both sides. After the internal injection molding material is extruded and formed, the pressure head is controlled to rise. At this time, the pressure on the top of the mold disappears, and the extrusion block pushes inward by the elastic force of the extrusion spring, pushing the mold upward, thereby pushing the formed shell out of the base, realizing rapid demolding. Furthermore, the mold directly pushes out the formed shell. The mold top area is large, so the mold will not damage the formed shell when the mold pushes out the formed shell, thus improving the product quality of the formed shell.

[0014] 2. This utility model uses a hopper, a drive motor, and a feeding rod to place the raw material to be injected into the hopper. Then, the drive motor drives the feeding rod to rotate according to a set fixed number of turns, thereby achieving precise quantitative feeding of the injection molding raw material and avoiding excessive feeding, which would lead to overflow and waste during the molding process. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the present utility model from the front view;

[0016] Figure 2 This is a side view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram showing the internal cross-section of the base of this utility model;

[0018] Figure 4 This is a schematic diagram showing the internal cross-section of the hopper of this utility model.

[0019] In the diagram: 1. Base; 2. Mold; 3. Extrusion block; 4. Positioning rod; 5. Reset rod; 6. Extrusion spring; 7. Bracket; 8. Electric cylinder; 9. Limiting rod; 10. Press head; 11. Fixing frame; 12. Hopper; 13. Drive motor; 14. Feeding rod. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] The embodiments of this utility model will be described below based on its overall structure.

[0022] Please see Figures 1-4 A quick demolding structure for injection molded shells includes a base 1, a mold 2 mounted on the inner wall of the base 1, an extrusion block 3 mounted on the outer wall of the mold 2, a positioning rod 4 mounted on the bottom of the mold 2, a reset rod 5 mounted on the side wall of the extrusion block 3, a compression spring 6 mounted on the outer wall of the reset rod 5, a bracket 7 mounted on the top of the base 1, an electric cylinder 8 mounted on the top of the bracket 7, a limit rod 9 mounted on the inner wall of the bracket 7, a pressure head 10 mounted on the bottom of the limit rod 9, and a fixing frame 11 mounted on the side wall of the base 1. The extrusion block 3 is symmetrically arranged around the central axis of the mold 2, and the mold 2 and the extrusion block 3 are movably connected. The extrusion block 3 forms a telescopic structure with the base 1 via the compression spring 6, and the reset rod 5 is movably connected to the base 1. The bracket 7 is welded to the base 1. The outer diameter of the pressure head 10 matches the outer diameter of the mold 2. The pressure head 10 forms a telescopic structure with the bracket 7 via the electric cylinder 8, and the pressure head 10... The mold 1 and mold 2 are tightly fitted together. Through the base 1, mold 2, extrusion block 3, positioning rod 4, reset rod 5, extrusion spring 6, bracket 7, electric cylinder 8, limit rod 9, pressure head 10 and fixing frame 11, the injection molding material is placed into the base 1 and covers the mold 2. Then, the pressure head 10 is pressed down by the electric cylinder 8. During the pressing process, the pressure head 10 will squeeze the mold 2 downward, while the extrusion block 3 slides with the mold 2 and squeezes to both sides. After the internal injection molding material is extruded and formed, the pressure head 10 is raised. At this time, the pressure on the top of the mold 2 disappears, and the extrusion block 3 is pushed inward by the elastic force of the extrusion spring 6, pushing the mold 2 upward, thereby pushing the formed shell out of the base 1, realizing rapid demolding. The mold 2 directly pushes out the formed shell. The top area of ​​the mold 2 is large, so the mold 2 will not damage the formed shell when pushing it out, thus improving the product quality of the formed shell.

[0023] Please see Figures 1-4A quick demolding structure for injection molded shells is disclosed. A material hopper 12 is installed on the inner wall of a fixed frame 11. A drive motor 13 is installed on the top of the material hopper 12, and a feeding rod 14 is installed on the bottom of the drive motor 13. The material hopper 12 is engaged with the fixed frame 11, and the feeding rod 14 forms a rotating structure with the material hopper 12 through the drive motor 13. The feeding rod 14 is spirally arranged and fits tightly against the inner wall of the material hopper 12. Through the material hopper 12, drive motor 13, and feeding rod 14, the raw material to be injected is placed into the material hopper 12. Then, the drive motor 13 drives the feeding rod 14 to rotate according to a set fixed number of turns, thereby realizing precise quantitative feeding of the injection molding raw material and avoiding excessive feeding, which would lead to overflow and waste during the molding process.

[0024] Working principle: In use, first move the device to the desired position, then place the raw material to be injected into the hopper 12. Then, the drive motor 13 drives the feeding rod 14 to rotate according to a set fixed number of revolutions, thereby achieving precise quantitative feeding of the injection molding raw material and avoiding excessive feeding, which would lead to overflow and waste during the molding process. After the injection molding raw material is placed into the base 1, it covers the mold 2. Then, the electric cylinder 8 controls the pressure head 10 to press down. During the downward pressing process, the pressure head 10 will squeeze the mold 2 downwards, while the extrusion block 3 slides with the mold 2, squeezing to both sides. After the internal injection molding material is extruded and formed, the pressure head 10 is raised. At this time, the pressure on the top of the mold 2 disappears, and the extrusion block 3 pushes inward by the elastic force of the extrusion spring 6, pushing the mold 2 upward, thereby pushing the formed shell out of the base 1, realizing rapid demolding. The mold 2 directly pushes out the formed shell. The top area of ​​the mold 2 is large, so the mold 2 will not damage the formed shell when it pushes it out, thus improving the product quality. This completes the use of the device. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick demolding structure for injection-molded housings, comprising a base (1), characterized in that: The base (1) has a mold (2) installed on its inner wall, an extrusion block (3) installed on its outer wall, a positioning rod (4) installed at the bottom of the mold (2), a reset rod (5) installed on the side wall of the extrusion block (3), a compression spring (6) installed on the outer wall of the reset rod (5), a bracket (7) installed on the top of the base (1), an electric cylinder (8) installed on the top of the bracket (7), a limit rod (9) installed on the inner wall of the bracket (7), a pressure head (10) installed at the bottom of the limit rod (9), a fixing frame (11) installed on the side wall of the base (1), a hopper (12) installed on the inner wall of the fixing frame (11), a drive motor (13) installed on the top of the hopper (12), and a feeding rod (14) installed at the bottom of the drive motor (13).

2. The quick demolding structure for injection molded housing according to claim 1, characterized in that: The extrusion block (3) is symmetrically arranged around the central axis of the mold (2), and the mold (2) and the extrusion block (3) are movably connected.

3. The quick demolding structure for injection molded housing according to claim 1, characterized in that: The compression block (3) forms a telescopic structure with the base (1) through the compression spring (6), and the reset rod (5) is movably connected to the base (1).

4. The quick demolding structure for injection molded housing according to claim 1, characterized in that: The bracket (7) is welded to the base (1), and the outer diameter of the pressure head (10) matches the outer diameter of the mold (2).

5. The quick demolding structure for injection molded housing according to claim 1, characterized in that: The pressure head (10) forms a telescopic structure with the bracket (7) via an electric cylinder (8), and the pressure head (10) is in close contact with the mold (2).

6. The quick demolding structure for injection molded housing according to claim 1, characterized in that: The hopper (12) is engaged with the fixed frame (11), and the feed rod (14) forms a rotating structure with the hopper (12) through the drive motor (13).

7. The quick demolding structure for injection molded housing according to claim 1, characterized in that: The feeding rod (14) is spirally arranged and is tightly fitted to the inner wall of the hopper (12).

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