Injection mold capable of integrally demolding and ejecting

Abstract

The utility model discloses an injection mold capable of integrally demolding and ejecting, which relates to the field of injection molds and comprises a mold main body, a mold core is mounted on the outer wall of the mold main body in a sliding manner, and an ejection mechanism for integrally ejecting and demolding an injection product is arranged in the mold main body. The ejection mechanism comprises a hydraulic cylinder fixedly mounted on the outer wall of the mold body, a piston rod is arranged at the hydraulic end, an ejection plate with the outer wall slidably connected with the interior of the mold body is fixedly mounted at the end of the piston rod, an ejector pin is fixedly mounted on the outer wall of the ejection plate, and an ejection block is fixedly mounted at the end of the ejector pin. An ejection hole is formed in the outer wall of the mold core, and a limiting mechanism used for disassembling and cleaning the mold core is arranged on the outer wall of the mold body. According to the injection mold capable of integrally demolding and ejecting, by arranging the ejecting mechanism, the problem that the outer wall of a finished product is tightly attached to the outer wall of the mold core is effectively solved, the demolding efficiency is greatly improved, the whole injection molding production process is smoother and more efficient, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a kind of injection mold of integrated demolding ejection. BACKGROUND

[0002] Injection mold is the important tool for forming plastic product in plastics processing industry, it is composed of multiple parts, complete the production process of plastic product under the cooperation of injection molding machine, plastic raw material is injected into cavity under high pressure after being heated and melted by injection molding machine, and is shaped into plastic product after cooling and solidification, in injection molding process, the demolding link of mold is crucial.

[0003] In prior art, the patent with the application number CN202420752863.3 discloses an injection mold easy to demold, to solve the problem that the injection mold in prior art generally does not have the structure of auxiliary demolding, thereby being easy to cause damage to the surface and corner of finished product in the process of demolding, thereby affecting the demolding quality, the upper surface of the bottom plate is provided with support frame on both sides, the top of the support frame is provided with top plate, the upper surface of the top plate is installed with air cylinder, the lower surface of the top plate is provided with pneumatic telescopic rod;It also includes: mold, which is arranged between the bottom plate and the top plate, the upper part of the mold is provided with upper mold base, and the lower part of the mold is provided with lower mold base;The top of the upper mold base is provided with first support plate, the bottom of the lower mold base is provided with second support plate, the inside of the first support plate and the second support plate is installed with cooling fan, and the upper surface of the first support plate is provided with connecting sleeve on both sides.

[0004] In combination with the above material, although the prior art is helpful for mold opening and mold closing operation, the outer wall of finished product and the outer wall of mold core are closely attached, which is not conducive to the integral separation of finished product and mold core forming cavity, thereby leading to time-consuming and laborious demolding process, and further affecting production efficiency, therefore, we propose an injection mold capable of integrated demolding and ejection. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an injection mold capable of integrated demolding and ejection to solve the problem that the outer wall of finished product and the outer wall of mold core are closely attached in the above background technology, which is not conducive to the integral separation of finished product and mold core forming cavity, thereby leading to time-consuming and laborious demolding process, and further affecting production efficiency.

[0006] To achieve the above object, the utility model provides the following technical scheme: an injection mold capable of integrated demolding and ejection, comprising a mold main body, a mold core is slidably installed on the outer wall of the mold main body, a ejection mechanism for integrally ejecting and demolding injection product is arranged inside the mold main body;

[0007] The ejection mechanism comprises a hydraulic cylinder fixedly installed on the outer wall of the mold body, a piston rod is arranged at the hydraulic end, a ejection plate is fixedly installed at the end of the piston rod and is in sliding connection with the inner wall of the mold body, a thimble is fixedly installed on the outer wall of the ejection plate, a top block is fixedly installed at the end of the thimble, a guide rod is fixedly installed in the inner wall of the mold body and is in sliding connection with the ejection plate, an ejection hole is formed in the outer wall of the mold core, a sealing gasket is arranged on the outer wall of the mold core, and a limiting mechanism for disassembling and cleaning the mold core is arranged on the outer wall of the mold body.

[0008] Further, the ejection plate is arranged in the inner wall of the mold body and corresponds to the mold core, the outer wall of the ejection plate is attached to the inner wall of the mold body, and an ejection cavity corresponding to the ejection plate is formed in the inner wall of the mold body.

[0009] Further, the length of the guide rod corresponds to the length of the ejection cavity, a plurality of groups of guide rods are arranged at equal angles in the inner wall of the mold body, the end of the piston rod is fixedly connected with the outer wall of the ejection plate, and the outer wall of the piston rod and the outer wall of the mold body are sealed.

[0010] Further, the length of the thimble corresponds to the distance between the outer wall of the ejection plate and the outer wall of the mold core, and a plurality of groups of thimbles are arranged at equal intervals on the outer wall of the ejection plate.

[0011] Further, the top block corresponds to the thimble, the outer wall of the top block is at the same horizontal plane as the outer wall of the mold core, the outer diameter of the top block is larger than the outer diameter of the thimble, the outer diameter of the ejection hole corresponds to the outer diameter of the thimble, a plurality of groups of ejection holes are formed in the outer wall of the mold core and the outer wall of the mold body and correspond to the top block, and the length of the ejection hole is greater than the length of the top block.

[0012] Further, the limiting mechanism comprises a fixed block slidingly installed in the inner wall of the mold body, a fixed bolt is fixedly installed at the end of the fixed block and is in threaded connection with the outer wall of the mold body, and a handle is arranged at the end of the fixed bolt, and a clamping groove is arranged on the outer wall of the mold core.

[0013] Further, the end of the fixed block is designed in a circular truncated cone shape, the outer diameter of one end of the fixed block close to the mold core is smaller than the outer diameter of the other end of the fixed block, and the fixed block is symmetrically arranged on both sides of the mold core.

[0014] Further, the fixed bolt corresponds to the fixed block, threads for adjusting the position of the fixed block are formed in the outer wall of the fixed bolt, and one end of the fixed bolt is located outside the mold body, the clamping groove corresponds to the end of the fixed block, and the outer diameter of the clamping groove is smaller than the outer diameter of the fixed block.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] This injection mold with integrated demolding and ejection mechanism, through the setting of an ejection mechanism, allows the power generated by the hydraulic cylinder to be accurately and efficiently transmitted to the ejector plate. Under the stable guidance of the guide rod, the ejector plate ensures smooth and unbiased movement, driving the ejector pins and ejector blocks to move synchronously. The ejector blocks act on the injection molded product through the ejection hole, which can eject the product from the mold core cavity with uniform and sufficient ejection force. At the same time, the air in the ejection air chamber is pushed out through the ejection hole while the ejector plate is ejected, interacting with the ejector pins and ejector blocks. This effectively overcomes the problem of tight fit between the outer wall of the finished product and the outer wall of the mold core, greatly improving demolding efficiency, reducing the time and manpower required for demolding, making the entire injection molding production process smoother and more efficient, and improving production efficiency.

[0017] Furthermore, by setting a limiting mechanism, when the mold core needs to be disassembled and cleaned, rotating the handle drives the fixing bolt to rotate. The threaded structure of the fixing bolt causes it to move on the outer wall of the mold body, thereby causing the fixing block to disengage from the slot on the outer wall of the mold core. At this time, the mold core can be easily removed from the mold body, which facilitates the cleaning and maintenance of the molding cavity and surface inside the mold core, ensuring the accuracy and cleanliness of the mold core, extending the service life of the mold core, and the entire limiting mechanism is simple and convenient to operate, enabling the quick installation and disassembly of the mold core, providing a strong guarantee for the continuous and stable operation of injection molding production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the ejection mechanism of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point B;

[0021] Figure 4 This is a schematic diagram of the mold core, ejector hole, and sealing gasket structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the ejector plate, ejector pin, and ejector block structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the limiting mechanism of this utility model;

[0024] Figure 7 This utility model Figure 6 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Mold body; 101. Ejection chamber; 2. Mold core; 201. Slot; 3. Hydraulic cylinder; 301. Piston rod; 4. Ejection plate; 401. Ejector pin; 402. Ejector block; 403. Guide rod; 5. Ejection hole; 6. Sealing gasket; 7. Fixing block; 701. Fixing bolt; 702. Rotary handle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: Please refer to Figures 1-7 This utility model provides the following technical solution: an injection mold capable of integral demolding and ejection, comprising a mold body 1, a mold core 2 slidably mounted on the outer wall of the mold body 1, an ejection mechanism for integrally ejecting and demolding the injection molded product inside the mold body 1, the ejection mechanism including a hydraulic cylinder 3 fixedly mounted on the outer wall of the mold body 1, a piston rod 301 at the hydraulic end, and an ejection plate 4 whose outer wall is slidably connected to the inside of the mold body 1 fixedly mounted at the end of the piston rod 301, an ejector pin 401 fixedly mounted on the outer wall of the ejection plate 4, and an ejector block 402 fixedly mounted at the end of the ejector pin 401, a guide rod 403 whose outer wall is slidably connected to the ejection plate 4 fixedly mounted inside the mold body 1, an ejection hole 5 opened on the outer wall of the mold core 2, a sealing gasket 6 provided on the outer wall of the mold core 2, the ejection plate 4 located inside the mold body 1, and the ejection plate 4 correspondingly arranged with the mold core 2, and the outer wall of the ejection plate 4 fitting against the inner wall of the mold body 1, the mold body 1 The mold body 1 has an internal ejection chamber 101 corresponding to the ejector plate 4. The guide rod 403 is set with a length corresponding to the length of the ejection chamber 101. Multiple sets of guide rods 403 are set at equal angles inside the mold body 1. The end of the piston rod 301 is fixedly connected to the outer wall of the ejector plate 4. The outer wall of the piston rod 301 is sealed to the outer wall of the mold body 1. The length of the ejector pin 401 is set with a distance corresponding to the distance between the outer wall of the ejector plate 4 and the outer wall of the mold core 2. Multiple sets of ejector pins 401 are set at equal intervals on the outer wall of the ejector plate 4. The ejector block 402 is set with a corresponding ejector pin 401. The top outer wall of the ejector block 402 is on the same horizontal plane as the outer wall of the mold core 2. The outer diameter of the ejector block 402 is larger than the outer diameter of the ejector pin 401. The outer diameter of the ejector hole 5 is set with a corresponding ejector pin 401. Multiple sets of ejector holes 5 are set on the outer walls of both the mold core 2 and the mold body 1, corresponding to the ejector block 402. The length of the ejector hole 5 is greater than the length of the ejector block 402.

[0028] After the injection molding process is completed and the plastic product cools and solidifies in the molding cavity of the mold core 2, the ejection mechanism is activated. The hydraulic cylinder 3 installed on the outer wall of the mold body 1 begins to work. The piston rod 301 at the end of the hydraulic cylinder 3 extends outward. Since the end of the piston rod 301 is fixedly connected to the ejector plate 4, the extension of the piston rod 301 pushes the ejector plate 4 to slide upward in the ejection air chamber 101 inside the mold body 1. During the movement of the ejector plate 4, the guide rod 403 fixedly installed inside the mold body 1 plays an important role. The outer wall of the guide rod 403 is slidably connected to the ejector plate 4, and multiple sets of guide rods 403 are set at equal angles inside the mold body 1. This allows the ejector plate 4 to move smoothly along the guide rods 403, avoiding deviation. Multiple sets of ejector pins 401 are fixedly installed on the outer wall of the ejector plate 4. As the ejector plate 4 moves upward synchronously, the length of the ejector pins 401 corresponds to the distance between the outer wall of the ejector plate 4 and the outer wall of the mold core 2. The ejector blocks 402 fixedly installed at their ends also rise together. The outer wall of the mold core 2 has ejection holes 5 corresponding to the ejector blocks 402. The ejector blocks 402 gradually approach and contact the injection molded product through the ejection holes 5. At the same time, the air in the ejection air chamber 101 is compressed as the ejector plate 4 rises, and then discharged outward through the ejection holes 5. This airflow cooperates with the ejection force of the ejector pins 401 and the ejector blocks 402 to act on the injection molded product. Finally, with a uniform and sufficient ejection force, the product is ejected from the molding cavity of the mold core 2 as a whole, completing the demolding action.

[0029] Example 2: Based on Example 1, a limiting mechanism is also disclosed, the specific structure of which is as follows: The outer wall of the mold body 1 is provided with a limiting mechanism for disassembling and cleaning the mold core 2. The limiting mechanism includes a fixing block 7 that is slidably installed inside the mold body 1, and a fixing bolt 701 with its outer wall threadedly connected to the outer wall of the mold body 1 is fixedly installed at the end of the fixing block 7. The fixing bolt 701 is provided with a handle 702 at its end. The outer wall of the mold core 2 is provided with a groove 201. The end of the fixing block 7 is designed in the shape of a frustum. The outer diameter of the fixing block 7 at the end close to the mold core 2 is smaller than the outer diameter of the other end of the fixing block 7. The fixing blocks 7 are symmetrically arranged on both sides of the mold core 2. The fixing bolt 701 is correspondingly arranged with the fixing block 7. The outer wall of the fixing bolt 701 is provided with a thread for adjusting the position of the fixing block 7. One end of the fixing bolt 701 is located outside the mold body 1. The groove 201 is correspondingly arranged with the end of the fixing block 7. The outer diameter of the groove 201 is smaller than the outer diameter of the fixing block 7.

[0030] During the daily use of the injection mold, the mold core 2 needs to be disassembled and cleaned periodically to ensure the precision of the mold and the quality of the injection molded products. At this time, the limiting mechanism comes into play. The fixing bolt 701 in the limiting mechanism has a handle 702 at its end. When the mold core 2 needs to be disassembled, the operator turns the handle 702. The rotation of the handle 702 drives the fixing bolt 701 to rotate. Since the outer wall of the fixing bolt 701 is threaded to the outer wall of the mold body 1, the fixing bolt 701 moves along the outer wall of the mold body 1 during rotation. The fixing block 7, which is fixedly installed at the end of the fixing bolt 701, moves synchronously with the movement of the fixing bolt 701. The fixing block 7 has a frustum-shaped design and is symmetrically arranged on both sides of the mold core 2. When the fixing bolt 701 moves the fixing block 7, the end of the fixing block 7 gradually disengages from the slot 201 on the outer wall of the mold core 2. The slot 201 is correspondingly set with the end of the fixing block 7, and the outer diameter of the slot 201 is smaller than the outer diameter of the fixing block 7. When the fixing block 7 is completely disengaged from the slot 201, the mold core 2 loses its fixed constraint and can be easily slid off from the mold body 1. The operator can easily clean and maintain the molding cavity and surface inside the mold core 2. After cleaning, the handle 702 is rotated in the opposite direction so that the fixing bolt 701 drives the fixing block 7 to re-engage into the slot 201 on the outer wall of the mold core 2, realizing the quick installation of the mold core 2 and ensuring that the injection mold can continuously and stably carry out production work.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] 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. An injection mold that can be ejected in one piece, comprising a mold body (1), wherein a mold core (2) is slidably mounted on the outer wall of the mold body (1), and an ejection mechanism for ejecting and demolding the injection molded product in one piece is provided inside the mold body (1); Its features are: The ejection mechanism includes a hydraulic cylinder (3) fixedly installed on the outer wall of the mold body (1), and a piston rod (301) is provided at the hydraulic end. An ejection plate (4) with its outer wall slidably connected to the inside of the mold body (1) is fixedly installed at the end of the piston rod (301). An ejector pin (401) is fixedly installed on the outer wall of the ejection plate (4), and an ejector block (402) is fixedly installed at the end of the ejector pin (401). A guide rod (403) with its outer wall slidably connected to the ejection plate (4) is fixedly installed inside the mold body (1). An ejection hole (5) is opened on the outer wall of the mold core (2). A sealing gasket (6) is provided on the outer wall of the mold core (2). A limiting mechanism for disassembling and cleaning the mold core (2) is provided on the outer wall of the mold body (1).

2. The injection mold capable of integral demolding and ejection according to claim 1, characterized in that: The ejector plate (4) is located inside the mold body (1), and the ejector plate (4) is correspondingly provided with the mold core (2). The outer wall of the ejector plate (4) is in contact with the inner wall of the mold body (1). The mold body (1) has an ejection air chamber (101) corresponding to the ejector plate (4) inside.

3. The injection mold capable of integral demolding and ejection according to claim 1, characterized in that: The length of the guide rod (403) is corresponding to the length of the ejection air chamber (101), and multiple sets of guide rods (403) are arranged at equal angles inside the mold body (1). The end of the piston rod (301) is fixedly connected to the outer wall of the ejection plate (4), and the outer wall of the piston rod (301) and the outer wall of the mold body (1) are sealed together.

4. The injection mold capable of integral demolding and ejection according to claim 1, characterized in that: The length of the ejector pin (401) is set in accordance with the distance between the outer wall of the ejector plate (4) and the outer wall of the mold core (2), and multiple sets of ejector pins (401) are set at equal intervals on the outer wall of the ejector plate (4).

5. The injection mold capable of integral demolding and ejection according to claim 1, characterized in that: The top block (402) is correspondingly provided with the ejector pin (401), and the top outer wall of the top block (402) is on the same horizontal plane as the outer wall of the mold core (2). The outer diameter of the top block (402) is larger than the outer diameter of the ejector pin (401). The outer diameter of the ejector hole (5) is correspondingly provided with the outer diameter of the ejector pin (401). Multiple sets of ejector holes (5) are opened on the outer walls of the mold core (2) and the mold body (1) corresponding to the top block (402). The length of the ejector hole (5) is greater than the length of the top block (402).

6. The injection mold capable of integral demolding and ejection according to claim 1, characterized in that: The limiting mechanism includes a fixing block (7) that is slidably installed inside the mold body (1), and a fixing bolt (701) whose outer wall is threadedly connected to the outer wall of the mold body (1) is fixedly installed at the end of the fixing block (7), and a handle (702) is provided at the end of the fixing bolt (701), and a slot (201) is provided on the outer wall of the mold core (2).

7. The injection mold capable of integral demolding and ejection according to claim 6, characterized in that: The fixed block (7) has a frustum-shaped end, and the outer diameter of the fixed block (7) at the end close to the mold core (2) is smaller than the outer diameter of the other end of the fixed block (7). The fixed blocks (7) are symmetrically arranged on both sides of the mold core (2).

8. The injection mold capable of integral demolding and ejection according to claim 6, characterized in that: The fixing bolt (701) is provided corresponding to the fixing block (7), and the outer wall of the fixing bolt (701) is provided with a thread for adjusting the position of the fixing block (7). One end of the fixing bolt (701) is located outside the mold body (1). The slot (201) is provided corresponding to the end of the fixing block (7), and the outer diameter of the slot (201) is smaller than the outer diameter of the fixing block (7).

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