A nozzle for an injection molding machine

Abstract

The utility model discloses a kind of injection nozzle for injection molding machine, it is related to injection molding machine accessory technical field, including injection nozzle body, injection nozzle cylinder, injection nozzle base, injection nozzle nozzle head, needle valve and piston, injection nozzle base is equipped with water inlet and water outlet, the injection nozzle cylinder is equipped with first water inlet channel and first water outlet channel;The injection nozzle body includes main part and injection part, the main part is equipped with second water inlet channel and second water outlet channel, the outer surface of the injection part is equipped with cooling channel of thread distribution, the water inlet, the first water inlet channel, the second water outlet channel, the cooling channel, the first water outlet channel, the second water outlet channel and the water outlet are sequentially communicated;Still including water jacket, the water jacket is sleeved on the injection part;The utility model is equipped with cooling channel of thread distribution, cooling water flows in cooling channel of thread distribution, can more degreely take away the heat of injection part, cooling effect is better, effectively avoid liquid silicone solidification.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machine parts, specifically an injection nozzle for an injection molding machine. Background Technology

[0002] Liquid silicone injection molding machines are injection molding equipment specifically designed for processing liquid silicone (LSR). They achieve automated production by mixing the various components of liquid silicone in a specific ratio and then injecting them into a mold through a nozzle for shaping.

[0003] The nozzle is an accessory used in liquid silicone injection molding machines to inject liquid silicone.

[0004] Existing nozzles typically have multiple feed channels that feed material into the nozzle body before ejecting it from the nozzle tip. As a result, liquid silicone accumulates within these channels. If the temperature gets too high, the liquid silicone will solidify. Therefore, cooling channels are provided, and cooling water is circulated to lower the liquid silicone. Current nozzles usually use conventional strip-shaped cooling water channels to cool the liquid silicone within the nozzle body channels. However, because the feed channels within the nozzle body are typically quite wide, they contain a large amount of liquid silicone, making the conventional strip-shaped cooling water channels ineffective in cooling the silicone, thus affecting nozzle operation. Utility Model Content

[0005] This utility model discloses an injection nozzle for an injection molding machine to solve the technical problem of poor cooling effect in the feed channel of the injection nozzle body.

[0006] To solve the above-mentioned technical problems, the present invention proposes the following optimized technical solution:

[0007] An injection nozzle for an injection molding machine includes an injection nozzle body, an injection nozzle cylinder, an injection nozzle base, an injection nozzle head, a needle valve, and a piston. The injection nozzle head, the injection nozzle body, the injection nozzle cylinder, and the injection nozzle base are connected in sequence. The injection nozzle base has a feed inlet and a first feed channel. The injection nozzle cylinder has a second feed channel. The injection nozzle body has a third feed channel and a fourth feed channel. The injection nozzle head has an outlet. The feed inlet, the first feed channel, the second feed channel, the third feed channel, the fourth feed channel, and the outlet are connected in sequence. The injection nozzle cylinder has a receiving cavity inside. The piston is movably disposed in the receiving cavity. The needle valve is connected to the piston and passes through the fourth feed channel. The piston moves back and forth to block or release the outlet.

[0008] The nozzle base is provided with a water inlet and a water outlet, and the nozzle cylinder is provided with a first water inlet channel and a first water outlet channel; the nozzle body includes a main body and an injection part, the main body is provided with a second water inlet channel and a second water outlet channel, and the outer surface of the injection part is provided with threaded cooling channels, and the water inlet, the first water inlet channel, the second water outlet channel, the cooling channel, the first water outlet channel, the second water outlet channel and the water outlet are connected in sequence;

[0009] This utility model also includes a water jacket, which is fitted onto the ejection section.

[0010] Furthermore, there are multiple first feeding channels, second feeding channels, and third feeding channels.

[0011] Furthermore, the side of the nozzle cylinder is provided with a first air inlet and a second air inlet, and the piston divides the receiving cavity into a first receiving area and a second receiving area. The first air inlet is connected to the first receiving area, and the second air inlet is connected to the second receiving area. When air is supplied to the first air inlet, the piston moves toward the nozzle tip. When air is supplied to the second air inlet, the piston moves toward the nozzle base.

[0012] Furthermore, the present invention also includes an oil seal cap, which is sleeved on the needle valve and located within the second receiving area.

[0013] Furthermore, the end of the needle valve is pointed.

[0014] Furthermore, the nozzle body, the nozzle cylinder, and the nozzle base are connected in sequence by bolts.

[0015] Furthermore, the present invention also includes a connector, which is connected to the nozzle base and is used to connect the nozzle base to the injection molding machine.

[0016] The present invention has the following advantages over the prior art:

[0017] The nozzle provided by this utility model is also equipped with a water jacket. The outer surface of the injection part of the nozzle body is provided with threaded cooling channels. Cooling water flows in the threaded cooling channels, which can remove the heat of the injection part to a greater extent, resulting in better cooling effect and effectively preventing the liquid silicone from solidifying. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2.

[0020] Figure 3 This is an exploded view of the structure of this utility model.

[0021] Figure 4 This is the structural cross-section of this utility model. Figure 1 .

[0022] Figure 5 This is the structural cross-section of this utility model. Figure 2 .

[0023] Figure 6 This is the structural cross-section of this utility model. Figure 3 .

[0024] Figure 7 This is a schematic diagram of the needle valve, piston, and oil seal cap of this utility model.

[0025] Figure 8 This is a schematic diagram of the nozzle body of this utility model.

[0026] In the diagram: 1. Nozzle body; 11. Third feed channel; 12. Fourth feed channel; 13. Main body; 131. Second water inlet channel; 132. Second water outlet channel; 14. Injection section; 141. Cooling channel; 2. Nozzle cylinder; 21. Second feed channel; 22. Receiving cavity; 221. First receiving area; 222. Second receiving area; 23. First water inlet channel; 24. First water outlet channel; 25. First air inlet; 26. Second air inlet; 3. Nozzle base; 31. Feed inlet; 32. First feed channel; 33. Water inlet; 34. Water outlet; 4. Nozzle head; 41. Discharge outlet; 5. Needle valve; 6. Piston; 7. Water jacket; 8. Oil seal cover; 9. Connector. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] See Figures 1-8A nozzle for an injection molding machine includes a nozzle body 1, a nozzle cylinder 2, a nozzle base 3, a nozzle head 4, a needle valve 5, and a piston 6. The nozzle head 4, the nozzle body 1, the nozzle cylinder 2, and the nozzle base 3 are connected sequentially. The nozzle base 3 has a feed inlet 31 and a first feed channel 32. The nozzle cylinder 2 has a second feed channel 21. The nozzle body 1 has a third feed channel 11 and a fourth feed channel 12. The nozzle head 4 has a discharge outlet 41. 1. The first feed channel 32, the second feed channel 21, the third feed channel 11, the fourth feed channel 12 and the discharge port 41 are connected in sequence. The nozzle cylinder 2 is provided with a receiving cavity 22. The piston 6 is movably disposed in the receiving cavity 22. The needle valve 5 is connected to the piston 6 and passes through the fourth feed channel 12. The piston 6 moves back and forth to block or release the discharge port 41 by the needle valve 5, so as to control the liquid silicone to be ejected from the discharge port 41.

[0029] The nozzle base 3 is provided with an inlet 33 and an outlet 34, and the nozzle cylinder 2 is provided with a first inlet channel 23 and a first outlet channel 24; the nozzle body 1 includes a main body 13 and an injection part 14, the main body 13 is provided with a second inlet channel 131 and a second outlet channel 132, and the outer surface of the injection part 14 is provided with threaded cooling channels 141. The inlet 33, the first inlet channel 23, the second outlet channel 132, the cooling channel 141, the first outlet channel 24, the second outlet channel 132 and the outlet 34 are connected in sequence; the present invention also includes a water jacket 7, which is fitted on the injection part 14. Cooling water is introduced into the inlet 33. The cooling water flows through the first inlet channel 23 and the second outlet channel 132 in sequence, and then reaches the cooling channel 141. The flow in the spirally distributed cooling channel 141 can remove the heat of the liquid silica gel in the fourth feed to a greater extent, preventing the liquid silica gel in the fourth feed from solidifying. Then it flows through the first outlet channel 24 and the second outlet channel 132 in sequence, and finally flows out from the outlet 34, realizing circulation.

[0030] In this embodiment, there are multiple first feed channels 32, second feed channels 21, and third feed channels 11. That is, after the liquid silicone enters from the feed port 31, it flows through multiple channels into the fourth feed channel 12, resulting in a faster feeding speed.

[0031] In this embodiment, the side of the nozzle cylinder 2 is provided with a first air inlet 25 and a second air inlet 26. The piston 6 divides the receiving cavity 22 into a first receiving area 221 and a second receiving area 222. The first air inlet 25 communicates with the first receiving area 221, and the second air inlet 26 communicates with the second receiving area 222. When air is supplied to the first air inlet 25, the piston 6 moves toward the nozzle head 4. When air is supplied to the second air inlet 26, the piston 6 moves toward the nozzle base 3, thereby controlling the feeding and stopping of feeding.

[0032] In this embodiment, the present invention also includes an oil seal cap 8, which is sleeved on the needle valve 5 and located within the second receiving area 222. When air is supplied to the first air inlet 25, the gas pushes the piston 6 to move towards the nozzle head 4. At this time, the piston 6 squeezes the oil seal cap 8, which is used to block the connection between the receiving cavity 22 and the nozzle body 1 channel.

[0033] In this embodiment, the end of the needle valve 5 is pointed to match the discharge shape of the nozzle head 4.

[0034] In this embodiment, the nozzle body 1, the nozzle cylinder 2, and the nozzle base 3 are connected in sequence by bolts.

[0035] In this embodiment, the present invention also includes a connector 9, which is connected to the nozzle base 3 and is used to connect the nozzle base 3 to the injection molding machine.

[0036] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A nozzle for an injection molding machine, comprising a nozzle body, a nozzle cylinder, a nozzle base, a nozzle head, a needle valve, and a piston, wherein the nozzle head, the nozzle body, the nozzle cylinder, and the nozzle base are sequentially connected; the nozzle base has a feed inlet and a first feed channel; the nozzle cylinder has a second feed channel; the nozzle body has a third feed channel and a fourth feed channel; the nozzle head has an outlet; the feed inlet, the first feed channel, the second feed channel, the third feed channel, the fourth feed channel, and the outlet are sequentially connected; the nozzle cylinder has a receiving cavity inside; the piston is movably disposed within the receiving cavity; the needle valve is connected to the piston and passes through the fourth feed channel; the piston moves back and forth to block or release the outlet of the needle valve, characterized in that... ； The nozzle base is provided with a water inlet and a water outlet, and the nozzle cylinder is provided with a first water inlet channel and a first water outlet channel; the nozzle body includes a main body and an injection part, the main body is provided with a second water inlet channel and a second water outlet channel, and the outer surface of the injection part is provided with threaded cooling channels, and the water inlet, the first water inlet channel, the second water outlet channel, the cooling channel, the first water outlet channel, the second water outlet channel and the water outlet are connected in sequence; It also includes a water jacket, which is fitted onto the ejection section.

2. A nozzle for an injection molding machine as defined in claim 1, wherein There are multiple first feeding channels, second feeding channels, and third feeding channels.

3. A nozzle for an injection molding machine as defined in claim 1, wherein The side of the nozzle cylinder is provided with a first air inlet and a second air inlet. The piston divides the receiving cavity into a first receiving area and a second receiving area. The first air inlet is connected to the first receiving area, and the second air inlet is connected to the second receiving area. When air is supplied to the first air inlet, the piston moves toward the nozzle tip. When air is supplied to the second air inlet, the piston moves toward the nozzle base.

4. A nozzle for an injection molding machine as defined in claim 3, wherein It also includes an oil seal cap, which is fitted onto the needle valve and located within the second receiving area.

5. The nozzle of claim 1 wherein, The end of the needle valve is pointed.

6. A nozzle for an injection molding machine as defined in claim 1, wherein The nozzle body, the nozzle cylinder, and the nozzle base are connected in sequence by bolts.

7. The nozzle of claim 1 wherein, It also includes a connector that is attached to the nozzle base and is used to connect the nozzle base to the injection molding machine.

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