Triggering type material injection mechanism

Abstract

The utility model discloses a trigger type material injection mechanism which comprises a material injection channel, a feeding channel and a material storage channel, a valve element is arranged in the material injection channel, a material injection inlet and a material injection outlet are respectively formed in the material injection channel, the material injection inlet is communicated with the feeding channel, and the material storage channel is communicated with the material injection inlet and the material injection outlet. The valve core comprises a first limiting part and a second limiting part, the second limiting part is matched with the material injection outlet to block the material injection outlet, and the valve core falls down under the action of gravity, that is, under the general condition, the material injection outlet is in a blocked state, and the screw conveyor conveys materials to the material storage channel. The injection valve further comprises an outlet channel communicated with the injection outlet and an ejector rod connected with the valve element, the ejector rod is arranged in the outlet channel, a discharging interval is formed between the ejector rod and the inner wall of the outlet channel, and when the second limiting part is matched with the injection outlet to block the injection outlet, at least part of the ejector rod penetrates out of the outlet channel.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding parts technology, specifically relating to a trigger-type injection mechanism. Background Technology

[0002] The nozzle head is typically connected to the discharge port of the extrusion screw in an injection molding machine. The heated and molten material enters the mold through the nozzle head, thus undergoing injection molding. Currently, existing nozzle heads generally consist of a cylindrical nozzle head body with a fluid channel within it. One side of the fluid channel is connected to the screw discharge port, and the other end is the ejector head. The heated and molten material flows through the fluid channel within the nozzle head body and is ejected into the mold through the ejector head. Generally, whether or not injection molding material storage occurs is controlled by the screw extruder. However, controlling injection through the screw extruder is slow and prone to leakage. Therefore, it is crucial to develop a trigger-based injection mechanism that overcomes these shortcomings. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, this utility model provides a trigger-type injection mechanism, including an injection channel, a feeding channel and a storage channel. The injection channel has a built-in valve core, and the injection channel forms an injection inlet and an injection outlet respectively. The injection inlet is connected to the feeding channel, and the storage channel is connected to both the injection inlet and the injection outlet.

[0004] The valve core includes a first limiting part and a second limiting part. The second limiting part cooperates with the injection outlet to block the injection outlet. The feeding channel passes through the injection inlet to the injection channel and enters the storage channel. The first limiting part cooperates with the injection inlet to block the injection inlet. The material in the storage channel passes through the injection channel and enters the injection outlet.

[0005] It also includes an injection molding base, on which the injection channel, feeding channel, storage channel and outlet channel are formed. A valve is provided between the feeding channel and the injection channel. The valve has a first channel that is axially connected to the injection channel. A concave ring is formed on the outer wall of the valve. At least one first through hole is formed on the inner wall of the first channel located at the concave ring, so that the material of the feeding channel passes through the first through hole to the first channel and is left in the storage channel.

[0006] It also includes a vertical plate, the injection base is mounted on the vertical plate, and a cylinder is also mounted on the vertical plate, with the cylinder output shaft at least partially disposed in the material storage channel;

[0007] A screw feeder is installed on the upright plate. A feeding groove is provided on the injection molding base. The feeding groove is connected to the feeding channel and is equipped with a feeding component. A second through hole connected to the feeding channel is opened on the feeding component. The top of the screw of the screw feeder is disposed on the feeding component.

[0008] With the above technical solution, the valve core falls under gravity, that is, under normal circumstances, the injection outlet is in a blocked state. The screw conveyor of this utility model transports the material to the storage channel. Since it also includes an outlet channel connected to the injection outlet, it also includes a push rod connected to the valve core. The push rod is arranged in the outlet channel and there is a discharge gap between it and the inner wall of the outlet channel. When the second limiting part cooperates with the injection outlet to block the injection outlet, the push rod at least partially passes through the outlet channel.

[0009] When the injection mold pushes the ejector pin upward, the injection inlet is blocked and the injection outlet is opened. Then, when the output shaft of the cylinder mounted on the vertical plate pushes outward, the material located in the storage channel can be pushed into the injection port of the injection mold to achieve trigger-type injection, which has a fast injection response and high efficiency.

[0010] It also includes an extraction channel, within which an extraction pipe is installed. It also includes an injection mold, the injection port of which at least partially pushes the bottom of the ejector pin upwards, allowing material to enter the injection port from the discharge gap. The injection mold has an insertion groove; an insert containing the outlet channel is inserted into the insertion groove, and the bottom of the insertion groove pushes the ejector pin upwards to open the outlet channel, allowing material to be injected into the injection port. The extraction port of the injection mold is equipped with a steel ball and a spring; when connected to the extraction port, the extraction pipe is inserted into the extraction port of the injection mold. When not extracting air, the steel ball blocks the extraction port; during extraction, an extraction pump is connected, causing the steel ball to separate from the extraction port.

[0011] It also includes a guide rod disposed in the first channel, with a feeding gap formed between the outer wall of the guide rod and the inner wall of the first channel, and the guide rod is connected to the valve core.

[0012] It also includes a nut, which is threadedly connected to the injection-molded base to limit the valve component. The nut has a second channel communicating with the first channel, and the guide rod is at least partially located within the second channel. A guide support is fitted onto the guide rod at the location of the second channel.

[0013] The feeding channel and the storage channel are located on both sides of the injection channel.

[0014] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure. When the vertical plate descends, the surface of the injection mold lifts the ejector rod upward, triggering the injection channel to open the injection channel so that the material in the storage channel can enter the injection mold. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2This is a schematic diagram of the cross-section of the present invention during injection molding;

[0017] Figure 3 This is an enlarged cross-sectional view of the present invention during sealing.

[0018] Figure 4 This is a cross-sectional schematic diagram of the present invention;

[0019] Figure label:

[0020] 1. Injection base; 2. Injection channel; 3. Feeding channel; 4. Storage channel; 5. Feeding groove; 6. Feeding component; 7. Second perforation;

[0021] 8 Valve core; 9 First limiting part; 10 Second limiting part; 11 Valve component; 12 First channel; 13 Concave ring; 14 First through hole; 15 Guide rod; 16 Nut; 17 Second channel; 18 Guide support; 32 Top rod;

[0022] 19 Injection Inlet; 20 Injection Outlet;

[0023] 21 Vertical plate; 22 Cylinder; 23 Screw feeder;

[0024] 24. Air extraction channel; 25. Air extraction pipe; 26. Injection mold; 27. Steel ball; 28. Spring; 29. ​​Air extraction port;

[0025] 30 Feeding distance; 31 Discharge distance; 33 Outlet channel. Detailed Implementation

[0026] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0027] Referring to the accompanying drawings, the present invention adopts the following technical solution: a trigger-type injection mechanism, including an injection channel 2, a feeding channel 3, and a storage channel 4. The injection channel 2 has a built-in valve core 8. The injection channel 2 forms an injection inlet 19 and an injection outlet 20, respectively. The injection inlet 19 is connected to the feeding channel 3, and the storage channel 4 is connected to both the injection inlet 19 and the injection outlet 20.

[0028] The valve core 8 includes a first limiting part 9 and a second limiting part 10. The second limiting part 10 cooperates with the injection outlet 20 to seal the injection outlet 20. The feeding channel 3 passes through the injection inlet 19 to the injection channel 2 and enters the storage channel 4. The first limiting part 9 cooperates with the injection inlet 19 to seal the injection inlet 19. The material in the storage channel 4 passes through the injection channel 2 and enters the injection outlet 20. The first limiting part 9 and the second limiting part 10 are conical to increase the sealing performance.

[0029] It also includes an injection molding base 1, on which the injection channel 2, feeding channel 3, storage channel 4 and outlet channel 33 are formed. A valve 11 is arranged between the feeding channel 3 and the injection channel 2. A first channel 12 is formed in the valve 11 and is axially connected to the injection channel 2. A concave ring 13 is formed on the outer wall of the valve 11. At least one first through hole 14 is formed on the inner wall of the first channel 12 located at the concave ring 13, so that the material of the feeding channel 3 passes through the first through hole 14 to the first channel 12 and is left to the storage channel 4.

[0030] It also includes a vertical plate 21, the injection base 1 is mounted on the vertical plate 21, and a cylinder 22 is also mounted on the vertical plate 21, with the cylinder output shaft at least partially disposed in the material storage channel 4;

[0031] A screw feeder 23 is installed on the upright plate 21. A feeding groove 5 is provided on the injection molding base 1. The feeding groove 5 is connected to the feeding channel 3 and is equipped with a feeding component 6. A second through hole 7 is opened on the feeding component 6, which is connected to the feeding channel 3. The top of the screw of the screw feeder 23 is arranged on the feeding component 6.

[0032] Through the above technical solution, the valve core 8 falls under gravity, that is, under normal circumstances, the injection outlet 20 is in a blocked state. The screw conveyor of this utility model transports the material to the storage channel 4. Since it also includes an outlet channel 33 connected to the injection outlet 20, it also includes a push rod 32 connected to the valve core 8. The push rod 32 is disposed in the outlet channel 33, and there is a discharge gap 31 between it and the inner wall of the outlet channel 33. When the second limiting part 10 cooperates with the injection outlet 20 to block the injection outlet 20, the push rod 32 at least partially passes through the outlet channel 33.

[0033] When the injection mold 26 pushes the ejector rod 32 upward, the injection inlet 19 is blocked and the injection outlet 20 is opened. When the output shaft of the cylinder 22 installed on the vertical plate 21 is pushed outward, the material located in the storage channel 4 can be pushed into the injection port of the injection mold 26 to achieve trigger-type injection, which has a fast injection response and high efficiency.

[0034] It also includes an extraction channel 24, within which an extraction pipe 25 is installed. It also includes an injection mold 26, the injection port of which at least partially pushes the bottom of the ejector pin 32 upwards, allowing material to enter the injection port from the discharge gap 31. The injection mold 26 has an insertion groove; an insert containing the outlet channel 33 is inserted into the insertion groove, and the bottom of the insertion groove pushes the ejector pin 32 upwards to open the outlet channel 33, allowing material to be injected into the injection port. A steel ball 27 and a spring 28 are installed at the extraction port of the injection mold 26. When connected to the extraction port 29, the extraction pipe 25 is inserted into the extraction port of the injection mold 26. When not extracting air, the steel ball 27 blocks the extraction port 29; during extraction, a vacuum pump is connected, causing the steel ball 27 to separate from the extraction port 29.

[0035] It also includes a guide rod 15 disposed in the first channel 12, with a feeding gap 30 formed between the outer wall of the guide rod 15 and the inner wall of the first channel 12, and the guide rod 15 is connected to the valve core 8.

[0036] It also includes a nut 16, which is threadedly connected to the injection-molded base to limit the valve component 11. The nut 16 has a second channel 17 that communicates with the first channel 12. The guide rod 15 is at least partially located in the second channel 17. A guide support 18 is sleeved on the guide rod 15 at the location of the second channel 17.

[0037] The feeding channel 3 and the storage channel 4 are respectively located on both sides of the injection channel 2.

[0038] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure. When the vertical plate 21 descends, the surface of the injection mold 26 lifts the push rod 32 to trigger the injection channel, so that the material in the storage channel 4 can enter the injection mold 26.

[0039] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A trigger-type injection mechanism, characterized in that: It includes a material injection channel (2), a material feeding channel (3) and a material storage channel (4). The material injection channel (2) has a built-in valve core (8). The material injection channel (2) forms a material injection inlet (19) and a material injection outlet (20) respectively. The material injection inlet (19) is connected to the material feeding channel (3). The material storage channel (4) is connected to both the material injection inlet (19) and the material injection outlet (20). The valve core (8) includes a first limiting part (9) and a second limiting part (10). The second limiting part (10) cooperates with the injection outlet (20) to block the injection outlet (20). The feeding channel (3) passes through the injection inlet (19) to the injection channel (2) and enters the storage channel (4). The first limiting part (9) cooperates with the injection inlet (19) to block the injection inlet (19). The material in the storage channel (4) passes through the injection channel (2) and enters the injection outlet (20).

2. The trigger-type injection mechanism according to claim 1, characterized in that: It also includes an outlet channel (33) connected to the injection outlet (20), and a push rod (32) connected to the valve core (8). The push rod (32) is disposed in the outlet channel (33) and has a discharge gap (31) between it and the inner wall of the outlet channel (33). When the second limiting part (10) cooperates with the injection outlet (20) to block the injection outlet (20), the push rod (32) at least partially passes through the outlet channel (33).

3. The trigger-type injection mechanism according to claim 1, characterized in that: It also includes an air extraction channel (24), in which an air extraction pipe (25) is disposed.

4. The trigger-type injection mechanism according to claim 2, characterized in that: It also includes an injection mold (26), the injection port of which at least partially pushes the bottom of the ejector pin (32) upward so that material enters the injection port from the discharge gap (31).

5. The trigger-type injection mechanism according to claim 3, characterized in that: It also includes an injection mold (26), and a steel ball (27) and a spring (28) are provided at the air extraction port (29) of the injection mold (26). When the air extraction port (29) is connected, the air extraction pipe (25) is inserted into the air extraction port (29) of the injection mold (26).

6. The trigger-type injection mechanism according to claim 2, characterized in that: It also includes an injection base (1), the injection channel (2), the feeding channel (3), the storage channel (4) and the outlet channel (33) are opened on the injection base (1), a valve (11) is arranged between the feeding channel (3) and the injection channel (2), a first channel (12) is opened in the valve (11) and is axially connected to the injection channel (2), a concave ring (13) is opened on the outer wall of the valve (11), and at least one first through hole (14) is opened on the inner wall of the first channel (12) located at the concave ring (13) so that the material of the feeding channel (3) passes through the first through hole (14) to the first channel (12) and is left to the storage channel (4).

7. The trigger-type injection mechanism according to claim 6, characterized in that: It also includes a guide rod (15) disposed in the first channel (12), the outer wall of the guide rod (15) and the inner wall of the first channel (12) forming a feeding gap (30), and the guide rod (15) is connected to the valve core (8).

8. The trigger-type injection mechanism according to claim 7, characterized in that: It also includes a nut (16) which is threaded to the injection-molded base to limit the valve (11). The nut (16) has a second channel (17) that communicates with the first channel (12). The guide rod (15) is at least partially located in the second channel (17).

9. The trigger-type injection mechanism according to claim 1, characterized in that: The feeding channel (3) and the storage channel (4) are respectively located on both sides of the injection channel (2).

10. The trigger-type injection mechanism according to claim 6, characterized in that: It also includes a vertical plate (21), the injection molding base (1) is mounted on the vertical plate (21), and a cylinder (22) is also mounted on the vertical plate (21), the output shaft of the cylinder being at least partially disposed in the material storage channel (4); A screw feeder (23) is installed on the upright plate (21). A feeding groove (5) is provided on the injection base (1). The feeding groove (5) is connected to the feeding channel (3) and is equipped with a feeding component (6). A second through hole (7) connected to the feeding channel (3) is opened on the feeding component (6). The top of the screw of the screw feeder (23) is arranged on the feeding component (6).

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