A high-precision flow control injection mold

Abstract

The utility model relates to the technical field of injection molds, and in particular to a high-precision flow control injection mold, comprising a mold body, and also comprising an injection port arranged on the mold body, a diverter plate arranged in the mold body, a hot runner cavity arranged in the diverter plate, a hot nozzle arranged below the diverter plate, and a flow control component for controlling the discharge flow of the hot nozzle; the utility model arranges a flow control component, and a flow control plate is arranged in the hot nozzle. When it is necessary to control the flow of hot-melt material ejected from the hot nozzle, a rotating drive component drives a rotating shaft to rotate and drives a flow control disk to rotate in the flow control cavity, and a plurality of different flow control holes are connected to the hot-melt through hole, so as to accurately control the flow of hot-melt material passing through the hot-melt outlet channel, and different apertures of flow control holes can be set according to needs to adapt to the production of different injection molded products, and can effectively reduce the uneven filling of plastic products after injection molding.

Description

Technical field:

[0001] The utility model relates to the technical field of injection molds, in particular to a high-precision flow control injection mold. Background technology:

[0002] Injection molding is a method of stirring completely molten plastic material through a screw at a certain temperature, injecting it into a mold cavity through a hot nozzle with high pressure, and obtaining a molded product after cooling and solidification. The existing hot nozzle usually has a needle valve arranged in the hot nozzle, and the needle valve can extend into the flow channel of the hot nozzle to block the flow channel of the hot nozzle. However, although the needle valve can control the opening and closing of the hot nozzle of the hot runner system, it cannot control the extrusion speed of the plastic after hot melting. In many cases, the plastic melt needs to flow according to the actual situation so that the melt can fill different cavities at the same time during multi-cavity molding. When there are multiple hot nozzles and multiple gates, the flow rate of each gate needs to be controlled. If the glue is discharged at the same speed, the smaller cavity will be filled and cooled first, which will lead to uneven filling of the plastic product after injection molding. An injection mold that can accurately control the flow rate is urgently needed. Utility model content:

[0003] The purpose of the utility model is to provide a high-precision flow control injection mold to address the deficiencies in the prior art, which can adjust the plastic material discharge speed and flow rate of the hot nozzle according to demand.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-precision flow control injection mold, including a mold body, and also including an injection port arranged on the mold body, a diverter plate arranged in the mold body, a hot runner cavity arranged in the diverter plate, a hot nozzle arranged below the diverter plate, and a flow control component for controlling the discharge flow of the hot nozzle, the outlet of the injection port is connected to the hot runner cavity, a hot melt outlet channel is arranged in the hot nozzle, and the inlet of the hot melt outlet channel is connected to the hot runner cavity; the flow control component includes a flow control cavity, a rotating device arranged on A rotating shaft in the flow control cavity, a flow control disk fixedly mounted on the rotating shaft, a rotating drive component for driving the rotating shaft to rotate, a flow control plate arranged in the hot melt outlet channel, and two hot melt through holes opened on the flow control plate. A first flow control cavity is arranged in the flow control plate, and a second flow control cavity is arranged in the mold body. The flow of the first flow control cavity is connected with the second flow control cavity to form the flow control cavity. A plurality of flow control holes with different apertures are evenly opened along the circumference of the flow control disk, and the hot melt through holes are connected through the flow control holes.

[0005] A further improvement to the above solution is that a plurality of the flow control holes are evenly opened on the flow control disk along the circumferential direction with the rotating shaft as the axis.

[0006] A further improvement to the above solution is that the flow control hole is a circular hole, and the diameter of the flow control hole with the largest diameter among the flow control holes does not exceed the diameter of the hot melt hole.

[0007] A further improvement to the above solution is that a closed opening for blocking the hot melt through hole is provided between two adjacent flow control holes.

[0008] A further improvement to the above solution is that the rotating shaft is arranged at the connection between the first flow control chamber and the second flow control chamber.

[0009] A further improvement to the above solution is that the rotation drive assembly includes a drive motor, and a power output end of the drive motor is drivingly connected to the rotating shaft.

[0010] A further improvement to the above solution is that the rotation drive assembly also includes a drive rod disposed at a power output end of the drive motor, and the drive rod passes through the diverter plate and is connected to the rotating shaft.

[0011] A further improvement to the above solution is that the drive motor is a servo motor.

[0012] The beneficial effects of the utility model are as follows: the utility model comprises a mold body, an injection port arranged on the mold body, a manifold plate arranged in the mold body, a hot runner cavity arranged in the manifold plate, a hot nozzle arranged below the manifold plate, and a flow control component for controlling the discharge flow of the hot nozzle, wherein the outlet of the injection port is communicated with the hot runner cavity, a hot melt outlet channel is arranged in the hot nozzle, and the inlet of the hot melt outlet channel is communicated with the hot runner cavity; the flow control component comprises a flow control cavity, a rotary rotary unit arranged in the flow control cavity, and a rotary unit arranged in the flow control cavity. A shaft, a flow control disk fixedly sleeved on the rotating shaft, a rotation driving component for driving the rotating shaft to rotate, a flow control plate arranged in the hot melt outlet channel, two hot melt through holes opened on the flow control plate, a first flow control cavity is arranged in the flow control plate, a second flow control cavity is arranged in the mold body, the flow of the first flow control cavity is connected with the second flow control cavity to form the flow control cavity, a plurality of flow control holes with different apertures are evenly opened on the flow control disk along the circumferential direction, and the hot melt through holes are connected through the flow control holes;

[0013] The utility model sets a flow control component, and a flow control plate is arranged in the hot nozzle. When it is necessary to control the flow of hot-melt material sprayed from the hot nozzle, the rotating drive component drives the rotating shaft to rotate and drives the flow control plate to rotate in the flow control cavity. Several different flow control holes are connected to the hot-melt through hole, so as to accurately control the flow of hot-melt material passing through the hot-melt outlet channel. The apertures of different flow control holes can be set according to needs to adapt to the production of different injection molding products, and can effectively reduce the uneven filling of plastic products after injection molding. Description of the drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle.

[0016] Figure 3 It is a structural schematic diagram of the flow control disk of the utility model.

[0017] Explanation of the accompanying drawings: mold body 1, injection port 11, second flow control cavity 12, diverter plate 2, hot runner cavity 21, hot nozzle 3, hot melt outlet channel 31, flow control assembly 4, flow control cavity 41, rotating shaft 42, flow control disk 43, flow control hole 431, closed mouth 432, rotation drive assembly 44, drive motor 441, drive rod 442, flow control plate 45, first flow control cavity 451, hot melt through hole 452. Specific implementation method:

[0018] The utility model will be further described below in conjunction with the accompanying drawings. Figure 1-3As shown, the utility model provides a high-precision flow control injection mold, including a mold body 1, and also including an injection port 11 arranged on the mold body 1, a diverter plate 2 arranged in the mold body 1, a hot runner cavity 21 arranged in the diverter plate 2, a hot nozzle 3 arranged below the diverter plate 2, and a flow control component 4 for controlling the discharge flow of the hot nozzle 3, the outlet of the injection port 11 is connected to the hot runner cavity 21, a hot melt outlet channel 31 is arranged in the hot nozzle 3, and the inlet of the hot melt outlet channel 31 is connected to the hot runner cavity 21; the flow control component 4 includes a flow control cavity 41, a rotating shaft 42 rotatably arranged in the flow control cavity 41, a flow control disk 43 fixedly sleeved on the rotating shaft 42, a rotating drive component 44 for driving the rotating shaft 42 to rotate, a flow control plate 45 arranged in the hot melt outlet channel 31, and a hot melt through hole 452 opened on the flow control plate 45, a first flow control cavity 451 is arranged in the flow control plate 45, and a first flow control cavity 451 is arranged in the mold body 1. Two flow control chambers 12, the flow of the first flow control chamber 451 is connected with the second flow control chamber 12 to form a flow control chamber 41, and a plurality of flow control holes 431 with different apertures are evenly opened on the flow control disk 43 along the circumferential direction. The hot melt through holes 452 are connected through the flow control holes 431. When the hot melt outlet channel 31 flows, the flow control hole 431 rotates to the position of the hot melt through hole 452. By setting the flow control component 4, a flow control plate 45 is provided in the hot nozzle 3. When it is necessary to control the flow of hot melt material sprayed from the hot nozzle 3, the rotating drive component 44 drives the rotating shaft 42 to rotate and drives the flow control disk 43 to rotate in the flow control chamber 41. A plurality of different flow control holes 431 are connected to the hot melt through hole 452, so as to accurately control the flow of hot melt material passing through the hot melt outlet channel 31, and different apertures of the flow control holes 431 can be set according to needs to adapt to the production of different injection molding products, which can effectively reduce the uneven filling of plastic products after injection molding.

[0019] In the present invention, a plurality of flow control holes 431 are evenly arranged on the flow control disk 43 along the circumferential direction with the rotating shaft 42 as the axis. The flow control holes 431 of the present invention are circular holes, and the diameter of the flow control hole 431 with the largest aperture among the flow control holes 431 does not exceed the aperture of the hot melt hole 452. When the flow control holes 431 rotate with the rotating shaft 42 as the axis, the flow control holes 431 with different apertures can be replaced in the first flow control cavity 451. The rotating drive component 44 drives the axis, and the flow control hole 431 that adapts to the current required flow can be rotated to be connected between the hot melt holes 452, thereby realizing precise control of the flow.

[0020] In the utility model, a closing opening 432 for blocking the hot melt through hole 452 is provided between two adjacent flow control holes 431. The closing opening 432 is provided between the two flow control holes 431. When the closing opening 432 is rotated to between the hot melt through holes 452, the hot melt through holes 452 are blocked, thereby blocking the hot melt outlet channel 31, completing the function of opening and closing the hot melt outlet channel 31, and facilitating regulation.

[0021] The rotating shaft 42 of the utility model is disposed at the connection between the first flow control chamber 451 and the second flow control chamber 12 , and the rotating shaft 42 rotates in the flow control chamber 41 .

[0022] The utility model comprises a rotation drive assembly 44 including a drive motor 441, the power output end of the drive motor 441 drives the connected rotating shaft 42, the rotation drive assembly 44 also includes a drive rod 442 arranged at the power output end of the drive motor 441, the drive rod 442 passes through the diverter plate 2 and is connected to the rotating shaft 42, the drive motor 441 is a servo motor, the drive motor 441 drives the rotating shaft 42 to rotate via the drive rod 442, the drive motor 441 is configured as a servo motor, the rotation precision is high, and the rotation of the flow control disk 43 can be more accurately controlled.

[0023] Working principle:

[0024] During operation, the hot melt material flows into the hot runner cavity 21 in the manifold 2 through the injection port 11, and flows into the hot melt outlet channel 31 in the hot nozzle 3 through the hot runner cavity 21. The hot nozzle 3 is provided with a flow control plate 45. When it is necessary to control the flow of the hot melt material ejected from the hot nozzle 3, the rotating drive assembly 44 drives the rotating shaft 42 to rotate, thereby driving the flow control disk 43 to rotate in the flow control cavity 41. Several different flow control holes 431 are connected to the hot melt through hole 452, so as to accurately control the flow of the hot melt material passing through the hot melt outlet channel 31. Different apertures of the flow control holes 431 can be set as needed to adapt to the production of different injection molded products, and can effectively reduce the uneven filling of plastic products after injection molding.

[0025] Of course, the above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A high-precision flow control injection mold, comprising a mold body (1), characterized in that: The mold body (1) further comprises an injection port (11) arranged on the mold body (1), a manifold (2) arranged in the mold body (1), a hot runner cavity (21) arranged in the manifold (2), a hot nozzle (3) arranged below the manifold (2), and a flow control component (4) for controlling the discharge flow of the hot nozzle (3), wherein the outlet of the injection port (11) is in communication with the hot runner cavity (21), a hot melt outlet channel (31) is arranged in the hot nozzle (3), and the inlet of the hot melt outlet channel (31) is in communication with the hot runner cavity (21); the flow control component (4) comprises a flow control cavity (41), a rotating shaft (42) rotatably arranged in the flow control cavity (41), and a flow control component (4) fixedly sleeved on the rotating shaft (42). A flow control disk (43), a rotation drive assembly (44) for driving the rotating shaft (42) to rotate, a flow control plate (45) arranged in the hot melt outlet channel (31), and two hot melt through holes (452) opened on the flow control plate (45), wherein a first flow control cavity (451) is arranged in the flow control plate (45), and a second flow control cavity (12) is arranged in the mold body (1), and the flow of the first flow control cavity (451) is connected with the second flow control cavity (12) to form the flow control cavity (41), and a plurality of flow control holes (431) with different apertures are evenly opened on the flow control disk (43) along the circumferential direction, and the hot melt through holes (452) are connected through the flow control holes (431).

2. A high-precision flow control injection mold according to claim 1, characterized in that: A plurality of flow control holes (431) are evenly arranged on the flow control disk (43) along the circumferential direction with the rotating shaft (42) as the axis.

3. A high-precision flow control injection mold according to claim 2, characterized in that: The flow control hole (431) is a circular hole, and the diameter of the flow control hole (431) with the largest diameter among the flow control holes (431) does not exceed the diameter of the hot melt hole (452).

4. A high-precision flow control injection mold according to claim 1, characterized in that: A closing opening (432) for blocking the hot melt through hole (452) is provided between two adjacent flow control holes (431).

5. The high-precision flow control injection mold according to claim 1, characterized in that: The rotating shaft (42) is arranged at the connection between the first flow control chamber (451) and the second flow control chamber (12).

6. A high-precision flow control injection mold according to claim 1, characterized in that: The rotation driving assembly (44) comprises a driving motor (441), and a power output end of the driving motor (441) is drivingly connected to the rotating shaft (42).

7. A high-precision flow control injection mold according to claim 6, characterized in that: The rotation drive assembly (44) further comprises a drive rod (442) arranged at the power output end of the drive motor (441), and the drive rod (442) passes through the diverter plate (2) and is connected to the rotating shaft (42).

8. A high-precision flow control injection mold according to claim 7, characterized in that: The driving motor (441) is a servo motor.

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