A plastic injection molding machine nozzle mechanism with automatic cleaning function

Abstract

This utility model discloses a plastic injection molding machine nozzle mechanism with automatic cleaning function, belonging to the field of injection molding machine technology. It includes a barrel with a nozzle body on one side. An automatic cleaning component is installed inside the barrel, comprising a connecting cylinder, a screw, a cleaning cylinder, and a conical heating cylinder. The connecting cylinder is fixedly connected to one side of the barrel, and the screw is rotatably connected inside the barrel. The beneficial effects of this utility model are that, through the automatic cleaning component, the cleaning process can be automatically started without manual intervention after the nozzle body is at risk of clogging or after a set production cycle is completed. This provides reliable support for the continuity, safety, and product quality stability of injection molding production. Simultaneously, the heating performance of the conical heating cylinder remelts the residual molten material, and with the help of the spiral guiding structure of the threaded groove, the residual material can be stably carried out of the nozzle body with the rotation of the cleaning cylinder, further ensuring product quality stability.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically to a plastic injection molding machine nozzle mechanism with automatic cleaning function. Background Technology

[0002] Plastic injection molding machines are specialized molding equipment that process plastic raw materials (granules, powders, etc.) into various plastic products. They are one of the most widely used and most efficient core equipment in the plastic processing industry. From small everyday items like bottle caps and mobile phone casings to large items like car bumpers and appliance casings, almost all geometrically complex plastic parts produced in batches rely on injection molding machines for manufacturing. The nozzle mechanism is an important accessory of plastic injection molding machines and is one of the core components that determines the quality of injection molded products and the continuity of production.

[0003] To address this, China Patent Network disclosed a pneumatic nozzle mechanism for an injection molding machine used in the production of magnetic plastics, application number: 202011523741.X. Through the setting of the nozzle mechanism and the limiting mechanism, the movable plug can be used to block the nozzle flow channel, thereby effectively preventing material from flowing out of the nozzle during the plasticizing process of the injection molding machine. At the same time, through the setting of the threaded tube, the first air channel and the second air channel, the movable plug can be tightly attached to the nozzle mechanism by using an external air pipe, so that there will be no leakage due to poor sealing caused by the weakening of the spring elasticity.

[0004] Although the above-mentioned application meets the user's needs to a certain extent, there are still some defects in the use process. The specific problems are as follows: In the process of plastic injection molding, the molten material remaining in the nozzle channel is easy to cool and solidify during the machine stop or temperature fluctuation. The solidified residue will gradually accumulate and block the channel, and may also cause quality defects such as color difference and impurity spots in the product. Based on this, this utility model designs a plastic injection molding machine nozzle mechanism with automatic cleaning function to solve the above problems. Summary of the Invention

[0005] The purpose of this utility model is to provide a plastic injection molding machine nozzle mechanism with automatic cleaning function, so as to solve the problem mentioned in the background art that, during the plastic injection molding process, the molten material remaining in the nozzle flow channel is easily cooled and solidified during the machine stop or temperature fluctuation. The solidified residue will gradually accumulate and block the flow channel, and may also cause quality defects such as color difference and impurity spots in the product.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plastic injection molding machine nozzle mechanism with automatic cleaning function, including a barrel, a nozzle body on one side of the barrel, and an automatic cleaning component installed inside the barrel, the automatic cleaning component including a connecting cylinder, a screw, a cleaning cylinder and a conical heating cylinder; A connecting cylinder is fixedly connected to one side of the barrel, and a screw is rotatably connected inside the barrel. A cleaning cylinder is threaded onto the outside of the screw, and a conical heating cylinder is fixedly connected to one side of the cleaning cylinder. This allows the cleaning process to be automatically started without manual intervention after the nozzle body is at risk of blockage or after the set production cycle is completed, providing reliable support for the continuity, safety and product quality stability of injection molding production. The bottom end of the material cylinder is equipped with a flushing and anti-clogging component, which includes a connecting box, a filter plate, a connecting plate and a flushing chamber. A connecting box is fixedly connected to the bottom of the material cylinder. A filter plate is slidably connected inside the connecting box. A connecting plate is fixedly connected to one side of the filter plate. A rinsing chamber is fixedly connected inside the connecting box. This chamber can perform high-pressure rinsing on the outside of the cleaning cylinder and the conical heating cylinder, ensuring that the components can cooperate smoothly and efficiently complete the melting and removal of residual materials when the cleaning function is started next time.

[0007] Preferably, the automatic cleaning assembly further includes a rubber ring, a brush plate, a hopper, and a drive motor; A rubber ring is fixedly fitted to the outside of the cleaning cylinder, a brush plate is fixedly connected inside the cylinder, a hopper is fixedly connected to the top of the cylinder, and a drive motor is fixedly installed inside the connecting cylinder.

[0008] Preferably, the flushing anti-clogging assembly further includes a limiting spring, a T-shaped plate, a return spring, a rotary motor, and an eccentric wheel; Limiting springs are symmetrically fixedly connected to one side of the connecting plate, and a T-shaped plate is fixedly connected to the side of the filter plate away from the connecting plate. A return spring is sleeved on the outside of the T-shaped plate. A rotary motor is fixedly installed on one side of the connecting box, and an eccentric wheel is fixedly sleeved on the outside of the output shaft of the rotary motor.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. The automatic cleaning component can automatically start the cleaning process without manual intervention after the nozzle body is at risk of clogging or after the set production cycle is completed. This provides reliable support for the continuity, safety and product quality stability of injection molding production. At the same time, the heating performance of the conical heating cylinder melts the residual molten material again. With the help of the spiral guide structure of the threaded groove, the residual material can be stably carried out of the nozzle body as the cleaning cylinder rotates, further ensuring the stability of product quality.

[0010] 2. The anti-clogging flushing component can perform high-pressure flushing on the outside of the cleaning cylinder, conical heating cylinder and brush plate, ensuring that the components can work smoothly and efficiently to melt and remove residual materials when the cleaning function is started next time. At the same time, the rotating motor drives the eccentric wheel to rotate and strike the T-shaped plate, causing the reset spring and limit spring to deform and thus vibrate the filter plate, avoiding filter plate clogging and ensuring the filtration effect of solid-liquid separation. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a plastic injection molding machine nozzle mechanism with automatic cleaning function according to the present invention; Figure 2 This is a schematic diagram of the automatic cleaning component of this utility model; Figure 3 This is a schematic diagram of the installation structure of the brush plate of this utility model; Figure 4 This is a schematic diagram of the structure of the flushing and anti-clogging component of this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 1. Material cylinder; 2. Automatic cleaning assembly; 201. Connecting cylinder; 202. Screw; 203. Cleaning cylinder; 204. Conical heating cylinder; 205. Rubber ring; 206. Brush plate; 207. Hopper; 208. Drive motor; 3. Flushing and anti-clogging components; 301. Connecting box; 302. Filter plate; 303. Connecting plate; 304. Limit spring; 305. Flushing chamber; 306. T-shaped plate; 307. Return spring; 308. Rotary motor; 309. Eccentric wheel; 4. Nozzle body. Detailed Implementation

[0014] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: a plastic injection molding machine nozzle mechanism with automatic cleaning function, including a barrel 1, a nozzle body 4 on one side of the barrel 1, and an automatic cleaning component 2 installed inside the barrel 1. The automatic cleaning component 2 includes a connecting cylinder 201, a screw 202, a cleaning cylinder 203 and a conical heating cylinder 204. A connecting cylinder 201 is fixedly connected to one side of the barrel 1. A screw 202 is rotatably connected inside the barrel 1. A cleaning cylinder 203 is threaded onto the outside of the screw 202. A conical heating cylinder 204 is fixedly connected to one side of the cleaning cylinder 203. Threaded grooves are provided on the outer sides of both the cleaning cylinder 203 and the conical heating cylinder 204. The melted residue will naturally adhere to the inside of the threaded grooves on the surfaces of the cleaning cylinder 203 and the conical heating cylinder 204. With the help of the spiral guiding structure of the threaded grooves, the residue can be stably carried out of the nozzle body 4 as the cleaning cylinder 203 rotates. The storage design of the threaded grooves can ensure more thorough cleaning of the residue and reduce the risk of the residue mixing with the new material during subsequent injection molding. The automatic cleaning component 2 also includes a rubber ring 205, a brush plate 206, a hopper 207, and a drive motor 208; A rubber ring 205 is fixedly sleeved on the outside of the cleaning cylinder 203. A brush plate 206 is fixedly connected inside the material cylinder 1. The brush plate 206 can clean the outside of the cleaning cylinder 203 and the conical heating cylinder 204. A hopper 207 is fixedly connected to the top of the material cylinder 1 for easy addition of molten material. A drive motor 208 is fixedly installed inside the connecting cylinder 201. The output shaft of the drive motor 208 is fixedly connected to the screw 202. The drive motor 208 is electrically connected to the output terminal of an external power supply to facilitate the movement of the cleaning cylinder 203 and the conical heating cylinder 204 for pushing or cleaning. The worker feeds molten material into the hopper 207, where it falls into the barrel 1. The drive motor 208 is then activated, driving the screw 202. Since the screw 202 and the cleaning cylinder 203 are threadedly connected, the rotation of the screw 202 pushes the cleaning cylinder 203 axially towards the nozzle body 4. Simultaneously, the cleaning cylinder 203 moves the conical heating cylinder 204 forward. The rubber ring 205 ensures airtightness, smoothly pushing the molten material in the barrel 1 to the nozzle body 4. Finally, the molten material is injected into the mold cavity through the nozzle body 4, completing the injection molding process. When cleaning the nozzle body 4 is required, the conical heating cylinder 204 is energized and heated. Its heat is transferred to the nozzle body 4 and the residual molten material near the nozzle end of the barrel 1, causing the originally cooled and solidified residue to gradually melt, with most of it melting. The waste material is pushed out from the nozzle body 4 to prepare for subsequent removal. At this time, the drive motor 208 drives the screw 202 to rotate. The melted residue naturally adheres to the threaded grooves on the outside of the cleaning cylinder 203 and the conical heating cylinder 204 due to its stickiness. With the help of the spiral guiding structure of the threaded grooves, the residue is stably "collected" and gradually carried out of the nozzle body 4 with the movement of the cleaning cylinder 203, avoiding residue retention and blockage of the flow channel. During the movement of the cleaning cylinder 203 and the conical heating cylinder 204, their outer sides are in close contact with the brush plate 206 fixed inside the material cylinder 1. The brush plate 206 physically cleans the surfaces of both and the gaps in the threaded grooves, improving the thoroughness of cleaning. At the same time, the rubber ring 205 on the outside of the cleaning cylinder 203 can slide against the inner wall of the material cylinder 1 to scrape off the trace amount of melted material remaining on the inner wall of the material cylinder 1, avoiding residue accumulation.

[0016] The bottom end of the material cylinder 1 is equipped with a flushing and anti-clogging component 3, which includes a connecting box 301, a filter plate 302, a connecting plate 303, and a flushing chamber 305. The connecting box 301 is rotatably connected to a movable door, which is convenient to open to clean the waste material above the filter plate 302. The bottom end of the material cylinder 1 is fixedly connected to the connecting box 301. A drain pipe is provided on one side of the connecting box 301. The filter plate 302 is slidably connected inside the connecting box 301. A connecting plate 303 is fixedly connected to one side of the filter plate 302. A rinsing chamber 305 is fixedly connected inside the connecting box 301. A liquid inlet pipe is provided on one side of the rinsing chamber 305.

[0017] The flushing anti-clogging component 3 also includes a limit spring 304, a T-shaped plate 306, a return spring 307, a rotary motor 308, and an eccentric wheel 309; A limit spring 304 is symmetrically fixedly connected to one side of the connecting plate 303. A T-shaped plate 306 is fixedly connected to the side of the filter plate 302 away from the connecting plate 303. A reset spring 307 is sleeved on the outside of the T-shaped plate 306. A rotary motor 308 is fixedly installed on one side of the connecting box 301. The rotary motor 308 is electrically connected to the output end of an external power supply. An eccentric wheel 309 is fixedly sleeved on the outside of the output shaft of the rotary motor 308, which can strike the T-shaped plate 306 to make the filter plate 302 vibrate, avoid the filter plate 302 from clogging, and ensure the filtration effect of solid-liquid separation. Connect the inlet pipe on one side of the rinsing chamber 305 to the external cleaning fluid pump. The nozzles inside the rinsing chamber 305 spray high-pressure cleaning fluid onto the outer sides of the cleaning cylinder 203, the conical heating cylinder 204, the threaded grooves, and the brush plate 206 to remove residual material debris and oil stains adhering to the surface of the components, preventing the residue from solidifying and caking again after cooling, which would affect future use. The waste liquid naturally falls into the connecting box 301 below, where it is filtered through the filter plate 302 inside the connecting box 301 and discharged through the drain pipe on one side of the connecting box 301. Residual material debris remains above the filter plate 302, achieving solid-liquid separation. During the filtration process, the rotary motor 308 is powered on and started. Its output shaft drives the eccentric wheel 309 to rotate. When the eccentric wheel 309 rotates, it periodically strikes the T-shaped plate 306 on one side of the filter plate 302. After being struck, the T-shaped plate 306 drives the filter plate 302 to slide along the inside of the connecting box 301. At the same time, the return spring 307 on the outside of the T-shaped plate 306 is repeatedly stretched and contracted, causing the filter plate 302 to generate high-frequency slight vibration, which prevents residual material and debris from clogging the pores of the filter plate 302 and ensures stable filtration effect. The operator can open the movable door of the rotating connection inside the connecting box 301 to clean the residual material and debris on the filter plate 302.

[0018] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0019] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A plastic injection molding machine nozzle mechanism with automatic cleaning function, comprising a barrel (1), one side of the barrel (1) is provided with a nozzle body (4), characterized in that: The material cylinder (1) is equipped with an automatic cleaning component (2), which includes a connecting cylinder (201), a screw (202), a cleaning cylinder (203), and a conical heating cylinder (204). A connecting cylinder (201) is fixedly connected to one side of the material cylinder (1), a screw (202) is rotatably connected inside the material cylinder (1), a cleaning cylinder (203) is threaded onto the outside of the screw (202), and a conical heating cylinder (204) is fixedly connected to one side of the cleaning cylinder (203). The bottom end of the material cylinder (1) is equipped with a flushing anti-clogging component (3), which includes a connecting box (301), a filter plate (302), a connecting plate (303), and a flushing chamber (305). The bottom end of the material cylinder (1) is fixedly connected to a connecting box (301), a filter plate (302) is slidably connected inside the connecting box (301), a connecting plate (303) is fixedly connected to one side of the filter plate (302), and a rinsing chamber (305) is fixedly connected inside the connecting box (301).

2. A plastic injection molding machine nozzle mechanism with automatic cleaning function according to claim 1, characterized in that: The automatic cleaning component (2) also includes a rubber ring (205), a brush plate (206), a hopper (207), and a drive motor (208). A rubber ring (205) is fixedly sleeved on the outside of the cleaning cylinder (203), a brush plate (206) is fixedly connected inside the material cylinder (1), a hopper (207) is fixedly connected to the top of the material cylinder (1), and a drive motor (208) is fixedly installed inside the connecting cylinder (201).

3. The injection nozzle mechanism of a plastic injection molding machine with automatic cleaning function according to claim 1, characterized in that: Both the cleaning cylinder (203) and the conical heating cylinder (204) have threaded grooves on their outer sides.

4. The injection nozzle mechanism of a plastic injection molding machine with automatic cleaning function according to claim 2, characterized in that: The output shaft of the drive motor (208) is fixedly connected to the screw (202).

5. The injection nozzle mechanism for a plastic injection molding machine with automatic cleaning function according to claim 1, characterized in that: The flushing anti-clogging assembly (3) also includes a limiting spring (304), a T-shaped plate (306), a reset spring (307), a rotary motor (308), and an eccentric wheel (309). A limit spring (304) is symmetrically fixedly connected to one side of the connecting plate (303). A T-shaped plate (306) is fixedly connected to the side of the filter plate (302) away from the connecting plate (303). A reset spring (307) is sleeved on the outside of the T-shaped plate (306). A rotary motor (308) is fixedly installed on one side of the connecting box (301). An eccentric wheel (309) is fixedly sleeved on the outside of the output shaft of the rotary motor (308).

6. The injection nozzle mechanism of a plastic injection molding machine with automatic cleaning function according to claim 5, characterized in that: The rotary motor (308) is electrically connected to the output terminal of an external power source.

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