Injection mold with anti-flash structure

Abstract

The utility model relates to injection mold technical field, and disclose a kind of injection mold with anti-flash structure. This injection mold with anti-flash structure, including male die and female die, male die and female die are mutually adapted, the periphery of male die is fixedly connected with the push rod of four corner distribution, the periphery of female die is fixedly connected with the columnar cylinder of four corner distribution and the push rod adaptation, the inside of columnar cylinder is equipped with cylinder piston, the front side of cylinder piston is equipped with the reset component of annular array distribution and extends to the front side of columnar cylinder, the device has the advantages of automatic blowing cleaning, safe and reliable and cleaning quality stable, solve the manual operation cannot with injection cycle efficient synchronization, possibly lead to production interruption or cleaning not in time, and close-range manual operation possibly expose in high-temperature mold or high-pressure environment, cause work injury risk, rely on personnel experience, cleaning effect fluctuation is big, difficult to guarantee every mould time quality stable problem.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold with an anti-flash structure. Background Technology

[0002] In the injection molding process, the parting surface of the mold, i.e., the contact surface between the male and female molds, is a critical area for ensuring molding quality. Any foreign matter remaining on this sealing surface, such as residual plastic particles or dust, will create gaps when the mold closes, causing molten material to overflow and resulting in flash defects. Flash not only affects the appearance and dimensional accuracy of the product, but also increases subsequent repair costs and may even damage the mold.

[0003] In existing technologies, air blowing cleaning is often done manually by operators. However, manual operation cannot be efficiently synchronized with the injection molding cycle, which may lead to production interruption or untimely cleaning. Furthermore, close-range manual operation may expose the operator to high-temperature molds or high-pressure environments, posing a risk of workplace injury. Relying on personnel experience, the cleaning effect fluctuates greatly, making it difficult to guarantee the consistent quality of each mold.

[0004] In summary, an injection mold with an anti-flash structure is proposed to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an injection mold with an anti-flash structure, which has the advantages of automated air blowing cleaning, safety and reliability, and stable cleaning quality. It solves the problems that manual operation cannot be efficiently synchronized with the injection cycle, which may lead to production interruption or untimely cleaning. Furthermore, close-range manual operation may expose the user to high-temperature molds or high-pressure environments, causing workplace injury risks. It also addresses the issues that rely on personnel experience, resulting in large fluctuations in cleaning effect and difficulty in ensuring stable quality for each mold.

[0007] (II) Technical Solution

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An injection mold with an anti-flash structure includes a male mold and a female mold, which are mutually compatible. The male mold is fixedly connected to a push rod distributed in four corners on its periphery. The female mold is fixedly connected to a columnar cylinder distributed in four corners and compatible with the push rods on its periphery. Each columnar cylinder is equipped with a cylinder piston inside. The front side of each cylinder piston is equipped with a reset component distributed in a ring array and extending to the front side of the columnar cylinder. The left and right sides of the female mold are equipped with air collection pipes. The rear side of each columnar cylinder is equipped with a high-pressure air pipe connected to the air collection pipe on the same side. The rear side of each columnar cylinder is equipped with a one-way valve connected to its interior. The opposite side of each air collection pipe is equipped with an air nozzle that is connected to its interior and compatible with the parting surfaces of both the male and female molds.

[0009] The beneficial effects of this utility model are:

[0010] This injection mold with an anti-flash structure operates as follows: during mold closing, the push rod on the periphery of the male mold inserts into the cylindrical cylinder on the periphery of the female mold. The push rod then pushes the cylinder piston backward inside the cylindrical cylinder, simultaneously compressing the reset assembly. As the cylinder piston moves backward, the one-way valve closes, and gas is delivered to the gas collection pipe through the high-pressure air pipe and sprayed directionally onto the parting surface through the air nozzle to blow away residual foreign matter. When the mold opens, the push rod exits the cylindrical cylinder, and the reset assembly restores its deformation, causing the cylinder piston to move forward. The one-way valve opens until the cylinder piston is reset. This process offers advantages such as automated air blowing cleaning, safety and reliability, and stable cleaning quality.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Furthermore, the reset assembly includes a flat-head rod and a spring. The front side of each cylinder piston is fixedly connected with a flat-head rod arranged in a circular array and extending to the front side of the cylindrical cylinder. The outer side of each flat-head rod is fitted with a spring that abuts against the front side of the cylindrical cylinder.

[0013] The beneficial effect of adopting the above-mentioned further solution is that when the mold is closed, the push rod pushes the cylinder piston to move backward inside the cylindrical cylinder, while the spring is compressed by the flat-head rod. When the mold is opened, the push rod exits the cylindrical cylinder, the spring recovers its elastic deformation, and the cylinder piston moves forward to reset by the flat-head rod, realizing the automatic reset of the cylinder piston without manual intervention, which significantly improves the continuity and efficiency of the production line.

[0014] Furthermore, silicone pads adapted to the push rod are bonded to the front side of each cylinder piston.

[0015] The beneficial effects of adopting the above-mentioned further solution are that the silicone pad is bonded to the front side of the cylinder piston, which plays a buffering role when the push rod hits the cylinder piston, effectively absorbing impact energy, reducing hard contact noise between metal parts, creating a quiet working environment, and preventing deformation or damage caused by frequent impacts.

[0016] Furthermore, each side of the air collection pipe is embedded with air nozzles that are symmetrically distributed from left to right and vertically equidistant. The air nozzles are all connected to the air collection pipe, and the air jet direction of the air nozzles is adapted to the parting surface of the male mold and the female mold.

[0017] The beneficial effects of adopting the above-mentioned further solution are that the air nozzles are symmetrically distributed on the left and right and arranged vertically at equal intervals, ensuring that the high-pressure airflow can evenly cover the entire parting surface of the male and female molds, avoiding local omissions, thoroughly removing residual plastic particles or dust, and preventing flash from the root. The air jet direction of the air nozzles is precisely calibrated and perfectly matched with the parting surface, so that the airflow is concentrated to impact the key sealing area, improving cleaning efficiency, reducing gas waste, and reducing energy consumption.

[0018] Furthermore, the one-way valve allows gas to enter the cylindrical cylinder through it, while preventing gas inside the cylindrical cylinder from being discharged through the one-way valve.

[0019] The beneficial effect of adopting the above-mentioned further solution is that, during mold closing, the push rod pushes the cylinder piston to move backward inside the cylindrical cylinder, and the one-way valve closes at this time. The gas inside the cylindrical cylinder is transported to the gas collection pipe through the high-pressure air pipe, and then sprayed directionally towards the parting surface through the air nozzle to blow away residual foreign matter. During mold opening, the push rod exits the cylindrical cylinder, the cylinder piston moves forward to reset, and the one-way valve opens at this time, so that the cylindrical cylinder is connected to the outside through the one-way valve until the cylinder piston stops moving after resetting, and the one-way valve closes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the combined male and female mold structure of this utility model;

[0022] Figure 3 This is a cross-sectional view of the cylindrical cylinder structure of this utility model.

[0023] In the diagram: 1. Male mold; 2. Female mold; 3. Push rod; 4. Cylindrical cylinder; 5. Cylinder piston; 6. Reset assembly; 601. Flat-head rod; 602. Spring; 7. Air collection pipe; 8. High-pressure air pipe; 9. One-way valve; 10. Air nozzle; 11. Silicone pad. Detailed Implementation

[0024] 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.

[0025] In the embodiments, by Figure 1-3The present invention provides an injection mold with an anti-flash structure. The present invention includes a male mold 1 and a female mold 2, which are adapted to each other. The male mold 1 is fixedly connected to the periphery with push rods 3 distributed in four corners. The female mold 2 is fixedly connected to the periphery with columnar cylinders 4 distributed in four corners and adapted to the push rods 3. Each columnar cylinder 4 is provided with a cylinder piston 5. Each cylinder piston 5 is provided with a reset component 6 distributed in a ring array and extending to the front of the columnar cylinder 4. Each side of the female mold 2 is provided with an air collection pipe 7. Each columnar cylinder 4 is provided with a high-pressure air pipe 8 connected to the air collection pipe 7 on the same side. Each columnar cylinder 4 is provided with a one-way valve 9 connected to the rear of the cylinder. Each side of the air collection pipe 7 is provided with an air nozzle 10 connected to the rear of the cylinder and adapted to the parting surface of the male mold 1 and the female mold 2.

[0026] The reset assembly 6 includes a flat rod 601 and a spring 602. The front side of the cylinder piston 5 is fixedly connected with flat rods 601 arranged in a ring array and extending to the front side of the columnar cylinder 4. The outer side of the flat rod 601 is fitted with a spring 602 that abuts against the front side of the columnar cylinder 4.

[0027] The front side of the cylinder piston 5 is covered with silicone pads 11 that are compatible with the push rod 3;

[0028] On the opposite side of the air collection pipe 7, there are air nozzles 10 that are symmetrically distributed on the left and right and vertically equidistant. All air nozzles 10 are connected to the air collection pipe 7. The air jet direction of the air nozzles 10 is adapted to the parting surface of the male mold 1 and the female mold 2.

[0029] One-way valve 9 allows gas to enter cylindrical cylinder 4 through it, and prevents gas inside cylindrical cylinder 4 from being discharged through one-way valve 9.

[0030] Working principle:

[0031] Step 1: During the mold closing process, the push rod 3 on the side of the male mold 1 is inserted into the cylindrical cylinder 4 on the side of the female mold 2. The push rod 3 then pushes the cylinder piston 5 to move backward inside the cylindrical cylinder 4. At the same time, the spring 602 is compressed by the flat rod 601. The one-way valve 9 is closed at this time. The gas inside the cylindrical cylinder 4 is transported to the gas collection pipe 7 through the high-pressure air pipe 8, and then sprayed directionally towards the parting surface through the air nozzle 10 to blow away residual foreign matter.

[0032] Step 2: When the mold is opened, the push rod 3 exits the cylindrical cylinder 4, the spring 602 recovers its elastic deformation, and drives the cylinder piston 5 to move forward through the flat rod 601. At this time, the one-way valve 9 opens, so that the cylindrical cylinder 4 is connected to the outside through the one-way valve 9 until the cylinder piston 5 stops moving after resetting, and the one-way valve 9 closes to prepare for the next blowing.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection mold with an anti-flash structure, comprising a male mold (1) and a female mold (2), wherein the male mold (1) and the female mold (2) are mutually compatible, characterized in that: The male mold (1) is fixedly connected to push rods (3) arranged in four corners on its periphery. The female mold (2) is fixedly connected to columnar cylinders (4) arranged in four corners and adapted to the push rods (3) on its periphery. Each columnar cylinder (4) is provided with a cylinder piston (5). Each cylinder piston (5) is provided with a reset assembly (6) arranged in a ring array and extending to the front of the columnar cylinder (4) on its front side. Each female mold (2) is provided with an air collection pipe (7) on its left and right sides. Each columnar cylinder (4) is provided with a high-pressure air pipe (8) connected to the air collection pipe (7) on its rear side. Each columnar cylinder (4) is provided with a one-way valve (9) connected to its interior on its rear side. Each air collection pipe (7) is provided with an air nozzle (10) that is connected to its interior and adapted to the parting surfaces of the male mold (1) and the female mold (2) on its opposite side.

2. The injection mold with an anti-flash structure according to claim 1, characterized in that: The reset assembly (6) includes a flat-head rod (601) and a spring (602). The front side of the cylinder piston (5) is fixedly connected with flat-head rods (601) arranged in a ring array and extending to the front side of the columnar cylinder (4). The outer side of the flat-head rod (601) is fitted with a spring (602) that abuts against the front side of the columnar cylinder (4).

3. The injection mold with an anti-flash structure according to claim 1, characterized in that: Each cylinder piston (5) has a silicone pad (11) that is compatible with the push rod (3) bonded to its front side.

4. The injection mold with an anti-flash structure according to claim 1, characterized in that: Each side of the air collection pipe (7) is provided with air nozzles (10) that are symmetrically distributed on the left and right and vertically equidistant. The air nozzles (10) are all connected to the air collection pipe (7). The air jet direction of the air nozzles (10) is adapted to the parting surface of the male mold (1) and the female mold (2).

5. An injection mold with an anti-flash structure according to claim 1, characterized in that: The one-way valve (9) allows gas to enter the cylindrical cylinder (4) through it, and prevents the gas inside the cylindrical cylinder (4) from being discharged through the one-way valve (9).

Images