A cold runner system with valve gated primary nozzle control

Abstract

The utility model discloses a main nozzle valve port control's cold runner system, including main nozzle valve port control mechanism and cold runner mechanism, the cold runner mechanism is located the outside of main nozzle valve port control mechanism rear end, the main nozzle valve port control mechanism includes cylinder seat, the front end surface fixed mounting of cylinder seat has main jet runner board, the middle part fixed mounting of main jet runner board has main nozzle insert, the inside fixed mounting of cylinder seat has first cylinder, the output fixed mounting of first cylinder has first valve needle, the inside fixed mounting of main jet runner board upper end has main runner insert, the rear of cylinder seat is installed with second cylinder, the below of second cylinder is installed with runner steering insert. The utility model discloses through to injection nozzle setting valve port control's self -lock function, can realize in injection interval automatic locking main nozzle, prevents liquid silicone rubber accidental loss, ensures the continuity and stability of production process.

Description

Technical Field

[0001] This utility model relates to the field of injection nozzle technology, specifically a cold flow channel system with valve control for the main injection nozzle. Background Technology

[0002] The injection nozzle (also called a jet nozzle or spray nozzle) of an injection molding machine is a key component connecting the injection molding machine barrel and the mold gate. Its core function is to precisely inject molten plastic into the mold cavity under high pressure. It acts as a sealing interface between the barrel and the mold gate sleeve, ensuring that the molten plastic flows into the mold runner without leakage. The spherical design (or flat structure) at the tip of the nozzle precisely matches the groove of the mold gate sleeve to form a high-pressure seal, preventing plastic from overflowing.

[0003] When injecting liquid silicone into existing injection molding machines, the high fluidity of the silicone causes it to drool, leading to material leakage. Therefore, this does not meet the current requirements. To address this, we propose a cold runner system with valve control for the main nozzle. Utility Model Content

[0004] The purpose of this invention is to provide a cold runner system with valve control for the main nozzle, in order to solve the problem mentioned in the background art that when the injection nozzle of the existing injection molding machine injects high-temperature and high-pressure rubber, the high fluidity of the silicone causes drooling, which in turn leads to leakage of the rubber.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cold runner system with valve control for the main nozzle, comprising a main nozzle valve control mechanism and a cold runner mechanism. The cold runner mechanism is located on the outer side of the rear end of the main nozzle valve control mechanism. The main nozzle valve control mechanism includes a cylinder seat. A main injection runner plate is fixedly installed on the front end face of the cylinder seat. A main nozzle insert is fixedly installed in the middle of the main injection runner plate. A first cylinder is fixedly installed on the inner side of the cylinder seat. A first valve needle is fixedly installed at the output end of the first cylinder. A main flow runner insert is fixedly installed on the inner side of the upper end of the main injection runner plate. A second cylinder is installed behind the cylinder seat. A flow runner deflector insert is installed below the second cylinder. A second valve needle is slidably connected to the inner side of the flow runner deflector insert. A cold nozzle is slidably connected to the outer side of the bottom end of the second valve needle. A rubber flow runner is provided between the main flow runner insert and the flow runner deflector insert.

[0006] Preferably, a pressure sensor is fixedly installed on the inner side of the main nozzle insert, and a transmission block is installed at the bottom end of the pressure sensor. The transmission block is slidably connected to the main nozzle insert, and the transmission block is in close contact with the bottom end of the pressure sensor. The bottom end of the transmission block is inserted into the inner side of the adhesive flow channel.

[0007] Preferably, the cold runner mechanism includes a supporting base plate, a synchronous guide plate is installed above the supporting base plate, a heat insulation plate is fixedly installed between the supporting base plate and the synchronous guide plate, a code template is fixedly installed on the upper end face of the synchronous guide plate, an air valve is fixedly installed at the front end of the supporting base plate, and cooling water channels are provided inside the synchronous guide plate and the code template.

[0008] Preferably, the cylinder seat is fixedly connected to the support base plate, the air valve is connected to both the first cylinder and the second cylinder through a hose, the second cylinder and the flow channel deflector are fixedly connected to the code template, and the upper end of the second valve needle passes through the cold nozzle, the synchronous guide plate, the flow channel deflector and the code template in sequence and is fixedly connected to the output end of the second cylinder.

[0009] Preferably, the cylinder seat, main injection flow channel plate, and synchronous guide plate are connected through the rubber flow channel. Both ends of the rubber flow channel are connected through the main injection nozzle insert and the cold nozzle. The front end of the cooling water circuit passes through the cylinder seat and the main injection flow channel plate and is arranged in a spiral on the outside of the rubber flow channel.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This utility model injects liquid silicone into the inner side of the adhesive flow channel through a cold nozzle, so that the adhesive flow channel is turned by the flow channel turning insert and the main flow channel insert in sequence, and the adhesive is injected through the main nozzle insert. The front end of the cooling water channel passes through the cylinder seat and the main injection flow channel plate and is arranged in a spiral on the outer side of the adhesive flow channel, so that the cooling water channel can cool the adhesive during the process of guiding the adhesive in the adhesive flow channel, and prevent the liquid silicone from solidifying in the adhesive flow channel 17.

[0012] 2. This utility model uses a first cylinder and a second cylinder to drive the first valve needle and the second valve needle to be inserted into the inner side of the main nozzle insert and the cold nozzle, respectively, to achieve synchronous active sealing operation of the inner side of the main nozzle insert and the cold nozzle, that is, both ends of the rubber flow channel. This allows the rubber to be trapped inside the rubber flow channel, which helps to avoid output gaps in the rubber injection during subsequent injection. The pressure sensor can monitor the rubber pressure in the rubber flow channel in real time through the transmission block, which facilitates auxiliary monitoring of the opening and closing control of the rubber flow channel by the first cylinder and the second cylinder. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the entire utility model;

[0015] Figure 3 This utility model Figure 2A magnified structural diagram of region A in the middle.

[0016] In the diagram: 1. Cylinder seat; 2. Main injection flow channel plate; 3. Main injection nozzle insert; 4. Main flow channel insert; 5. First cylinder; 6. First valve needle; 7. Cooling water circuit; 8. Support base plate; 9. Code template; 10. Second cylinder; 11. Synchronous guide plate; 12. Flow channel deflector insert; 13. Air valve; 14. Cold nozzle; 15. Second valve needle; 16. Heat insulation plate; 17. Rubber flow channel; 18. Transmission block; 19. Pressure sensor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] The first cylinder 5 (model MDBB40-150Z) and the second cylinder 10 (model CDQMB80-50DZ) mentioned in this utility model can be obtained from the market or through private customization.

[0019] Please see Figure 1 and Figure 2 This utility model provides an embodiment of a cold runner system with a main nozzle valve port control, comprising a main nozzle valve port control mechanism and a cold runner mechanism. The cold runner mechanism is located outside the rear end of the main nozzle valve port control mechanism. The main nozzle valve port control mechanism includes a cylinder seat 1, a main injection runner plate 2 fixedly mounted on the front end face of the cylinder seat 1, a main nozzle insert 3 fixedly mounted on the middle part of the main injection runner plate 2, a first cylinder 5 fixedly mounted on the inner side of the cylinder seat 1, a first valve needle 6 fixedly mounted on the output end of the first cylinder 5, a main injection runner insert 4 fixedly mounted on the inner side of the upper end of the main injection runner plate 2, and a second valve needle 6 mounted behind the cylinder seat 1. The cylinder 10 has a flow channel deflector 12 installed below it. The inner side of the flow channel deflector 12 is slidably connected to the second valve needle 15. The outer side of the bottom end of the second valve needle 15 is slidably connected to the cold nozzle 14. A rubber flow channel 17 is provided between the main flow channel insert 4 and the flow channel deflector 12, so that the first cylinder 5 and the second cylinder 10 respectively drive the first valve needle 6 and the second valve needle 15 to insert into the inner side of the main nozzle insert 3 and the cold nozzle 14, thereby realizing the synchronous active sealing operation of the inner side of the main nozzle insert 3 and the cold nozzle 14, i.e., the two ends of the rubber flow channel 17, and thus the rubber can be intercepted to the inner side of the rubber flow channel 17.

[0020] Please see Figure 1 and Figure 2The cold runner mechanism includes a support base plate 8, a cylinder seat 1 fixedly connected to the support base plate 8, a synchronous guide plate 11 installed above the support base plate 8, the cylinder seat 1, the main injection runner plate 2, and the synchronous guide plate 11 connected through a material flow channel 17, a heat insulation plate 16 fixedly installed between the support base plate 8 and the synchronous guide plate 11, a code template 9 fixedly installed on the upper end face of the synchronous guide plate 11, a second cylinder 10 and a flow channel deflector insert 12 both fixedly connected to the code template 9, and the upper end of the second valve needle 15 sequentially passes through the cold nozzle 14, the synchronous guide plate 11, the flow channel deflector insert 12, and the code template 9, and is connected to the first cylinder 10. The output ends of the two cylinders 10 are fixedly connected, and the front end of the support base plate 8 is fixedly installed with a valve 13. The valve 13 is connected to the first cylinder 5 and the second cylinder 10 through a hose. The synchronous guide plate 11 and the code plate 9 are provided with a cooling water channel 7. The two ends of the glue flow channel 17 are connected to the main nozzle insert 3 and the cold nozzle 14. The front end of the cooling water channel 7 passes through the cylinder seat 1 and the main injection flow channel plate 2 and is arranged in a spiral on the outside of the glue flow channel 17. The cooling water channel 7 can cool the glue during the process of guiding the glue in the glue flow channel 17, so as to prevent the liquid silicone from solidifying in the glue flow channel 17.

[0021] Please see Figure 2 and Figure 3 A pressure sensor 19 is fixedly installed on the inner side of the main nozzle insert 3. A transmission block 18 is installed at the bottom of the pressure sensor 19. The transmission block 18 is slidably connected to the main nozzle insert 3. The transmission block 18 is in contact with the bottom of the pressure sensor 19. The bottom of the transmission block 18 is inserted into the inner side of the glue flow channel 17. The pressure sensor 19 can monitor the glue pressure in the glue flow channel 17 in real time through the transmission block 18, which facilitates the auxiliary monitoring of the opening and closing control of the glue flow channel 17 by the first cylinder 5 and the second cylinder 10.

[0022] In summary, during injection molding, the main nozzle insert 3 is brought into contact with the mold gate, and liquid silicone is injected into the inner side of the material flow channel 17 through the cooling nozzle 14. When the power is turned on, the material flow channel 17 is turned by the flow channel turning insert 12 and the main flow channel insert 4 in sequence, and the material is injected through the main nozzle insert 3. The front end of the cooling water channel 7 passes through the cylinder seat 1 and the main injection flow channel plate 2 and is arranged in a spiral on the outside of the material flow channel 17. This allows the cooling water channel 7 to cool the material during the process of guiding the material in the material flow channel 17, thus preventing the liquid silicone from solidifying inside the material flow channel 17.

[0023] During the gap in the injection of the rubber material, the first cylinder 5 and the second cylinder 10 are activated, so that the first cylinder 5 and the second cylinder 10 drive the first valve needle 6 and the second valve needle 15 to be inserted into the inner side of the main nozzle insert 3 and the cold nozzle 14, so as to realize the synchronous active sealing operation of the inner side of the main nozzle insert 3 and the cold nozzle 14, that is, the two ends of the rubber material flow channel 17, thereby trapping the rubber material to the inner side of the rubber material flow channel 17, so as to avoid the output gap of the rubber material injection during the next injection. The pressure sensor 19 can monitor the rubber material pressure in the rubber material flow channel 17 in real time through the transmission block 18, so as to facilitate the auxiliary monitoring of the opening and closing control of the rubber material flow channel 17 by the first cylinder 5 and the second cylinder 10.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cold runner system with valve control for the main nozzle, comprising a main nozzle valve control mechanism and a cold runner mechanism, wherein the cold runner mechanism is located outside the rear end of the main nozzle valve control mechanism, characterized in that: The main nozzle valve control mechanism includes a cylinder seat (1), a main injection channel plate (2) is fixedly installed on the front end face of the cylinder seat (1), a main injection nozzle insert (3) is fixedly installed in the middle of the main injection channel plate (2), a first cylinder (5) is fixedly installed on the inner side of the cylinder seat (1), a first valve needle (6) is fixedly installed at the output end of the first cylinder (5), a main channel insert (4) is fixedly installed on the inner side of the upper end of the main injection channel plate (2), a second cylinder (10) is installed behind the cylinder seat (1), a flow channel deflector insert (12) is installed below the second cylinder (10), a second valve needle (15) is slidably connected to the inner side of the flow channel deflector insert (12), a cold nozzle (14) is slidably connected to the outer side of the bottom end of the second valve needle (15), and a rubber flow channel (17) is provided between the main channel insert (4) and the flow channel deflector insert (12).

2. The cold flow channel system with valve control for the main nozzle according to claim 1, characterized in that: A pressure sensor (19) is fixedly installed on the inner side of the main nozzle insert (3). A transmission block (18) is installed at the bottom end of the pressure sensor (19). The transmission block (18) is slidably connected to the main nozzle insert (3). The transmission block (18) is in close contact with the bottom end of the pressure sensor (19). The bottom end of the transmission block (18) is inserted into the inner side of the rubber flow channel (17).

3. A cold flow channel system with valve control for the main nozzle according to claim 2, characterized in that: The cold runner mechanism includes a support base plate (8), a synchronous guide plate (11) is installed above the support base plate (8), a heat insulation plate (16) is fixedly installed between the support base plate (8) and the synchronous guide plate (11), a code template (9) is fixedly installed on the upper end face of the synchronous guide plate (11), an air valve (13) is fixedly installed at the front end of the support base plate (8), and cooling water channels (7) are provided inside the synchronous guide plate (11) and the code template (9).

4. A cold flow channel system with valve control for the main nozzle according to claim 3, characterized in that: The cylinder seat (1) is fixedly connected to the support base plate (8). The valve (13) is connected to the first cylinder (5) and the second cylinder (10) through a hose. The second cylinder (10) and the flow channel deflector insert (12) are fixedly connected to the code template (9). The upper end of the second valve needle (15) passes through the cold nozzle (14), the synchronous guide plate (11), the flow channel deflector insert (12) and the code template (9) in sequence and is fixedly connected to the output end of the second cylinder (10).

5. A cold flow channel system with valve port control for a main nozzle according to claim 4, characterized in that: The cylinder seat (1), main injection channel plate (2) and synchronous guide plate (11) are connected through the rubber flow channel (17). Both ends of the rubber flow channel (17) are connected through the main nozzle insert (3) and the cold nozzle (14). The front end of the cooling water channel (7) passes through the cylinder seat (1) and the main injection channel plate (2) and is arranged in a spiral on the outside of the rubber flow channel (17).

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