Glue feeding structure of one-mold multi-cavity plastic mold

Abstract

The utility model discloses a plastic feeding structure of a one-mold multi-cavity plastic mold, which is arranged on a fixed mold, a water gap plate is arranged on the fixed mold, a plastic feeding runner is arranged on the water gap plate, the plastic feeding runner is communicated with a pressurized liquid storage tank, the plastic feeding runner is communicated with a plurality of hot nozzles, each hot nozzle is communicated with a plurality of forming runners, and each forming runner is communicated with a mold cavity. According to the utility model, the pressurized liquid storage tank is arranged on the central axis of the glue inlet runner, so that the glue liquid entering each hot nozzle can be ensured to maintain approximately the same hydraulic pressure, the temperature of the glue liquid entering each mold cavity is independently adjusted through the hot nozzles, the glue liquid in each mold cavity is ensured to be at a better forming temperature, and the forming quality is ensured; by arranging the slag removal groove and the exhaust hole groove, a discharge space is reserved for slag and gas in the runner, so that the quality of a glue solution entering a mold cavity is ensured, and the undesirable phenomena that bubbles, black spots and the like are formed inside or on the surface of a product due to impure glue solution in the forming process are avoided or slowed down.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a glue feeding structure of a one-mold multi-cavity plastic mold. Background Art

[0002] In mold design, a one-mold-multiple-cavity structure is usually used to improve production efficiency and reduce production costs. In production, the injection parameters in the flow channels of each cavity in the one-mold-multiple-cavity mold structure are affected by factors such as the mold structure layout, the number of cavities actually involved in production, and the layout. It is often the case that the molding defect rate of some cavities is significantly higher than that of other cavities. Especially when the surface area of ​​the plastic part itself is relatively large but the wall thickness is relatively thin, the changes in parameters such as temperature and pressure during the injection of the glue have a more obvious impact on the product quality. If the state of the glue changes slightly, it is easy to cause defects such as bubbles, white spots or slag bags. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a glue feeding structure for a one-mold multi-cavity plastic mold, which can ensure that the glue entering each hot nozzle maintains approximately the same hydraulic pressure, and can independently adjust the temperature of the glue entering each mold cavity through the hot nozzle, thereby ensuring that the glue in each mold cavity is at a good molding temperature and ensuring the molding quality.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A glue feeding structure of a one-mold multi-cavity plastic mold is installed on a fixed mold, an A plate is provided at the end of the fixed mold, and more than two mold cavities are provided on the A plate; a nozzle plate is provided on the fixed mold, and a radial glue feeding flow channel is provided on the nozzle plate, and a pressurized liquid storage tank connected to the glue feeding flow channel is provided at the central axis of the glue feeding flow channel, and the end of the glue feeding flow channel is connected to a plurality of hot nozzles, each of the hot nozzles passes through the nozzle plate and extends to the A plate to be connected to a plurality of molding flow channels on it, and each of the molding flow channels passes through the A plate and is connected to a mold cavity.

[0006] As a further elaboration of the above technical solution:

[0007] In the above technical solution, the number of the hot nozzles is the same as the number of the mold cavities, and the plurality of molding flow channels connected to the same hot nozzle are all connected to the same mold cavity.

[0008] In the above technical solution, each of the molding flow channels includes a first flow channel and a second flow channel that are connected to each other. Each of the first flow channels is arranged at one end of the A plate and is connected to a hot nozzle. Each of the second flow channels passes through the A plate and is connected to a mold cavity arranged at the other end thereof.

[0009] In the above technical solution, a sprue hook is provided on the sprue plate, each of the sprue hooks extends in the same direction as the second flow channel, and its end extends to an end of the second flow channel, and each of the sprue hooks is transmission connected to a driving device and can approach or move away from the second flow channel under the drive of the driving device.

[0010] In the above technical solution, a slag removal groove is also provided at the end portion of each of the first flow channels, and each of the slag removal grooves is connected to the exhaust hole groove.

[0011] In the above technical solution, a cooling pipeline connected to the mold water cooling system is provided on the periphery of each hot nozzle, and control valves are provided on several cooling pipelines, and each control valve is electrically connected to the temperature control component on each hot nozzle.

[0012] Compared with the prior art, the beneficial effects of the utility model are: by arranging the pressurized liquid storage tank on the central axis of the glue inlet flow channel, it can be ensured that the glue entering each hot nozzle maintains approximately the same hydraulic pressure; by arranging a plurality of molding channels at the end of each hot nozzle, the temperature of the glue entering each mold cavity can be independently adjusted by the hot nozzle, ensuring that the glue in each mold cavity is at a good molding temperature and ensuring the molding quality; by arranging a slag removal groove at the end of each first channel and connecting it to the exhaust hole groove, a discharge space is reserved for the slag and gas in the flow channel, thereby ensuring the quality of the glue entering the mold cavity, avoiding or slowing down the formation of bubbles and black spots inside or on the surface of the product due to impure glue during the molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the structure of this embodiment (A plate is not shown);

[0014] Figure 2 is a structural schematic diagram of another viewing angle of this embodiment;

[0015] Figure 3 Schematic diagram of the structure of plate A in this embodiment;

[0016] Figure 4 It is a structural schematic diagram of plate A from another perspective in this embodiment.

[0017] In the figure: 10, A plate; 20, nozzle plate; 30, pressurized liquid storage tank; 40, hot nozzle; 41, temperature control component; 50, cooling pipeline; 1, mold cavity; 2, glue inlet flow channel; 3, molding flow channel; 301, first flow channel; 302, second flow channel; 303, slag removal groove; 304, exhaust hole groove; 4, nozzle hook needle; 5, nozzle. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] like Figure 1-4As shown, a glue feeding structure of a one-mold multi-cavity plastic mold is installed on a fixed mold, an A plate 10 is provided at the end of the fixed mold, and more than two mold cavities 1 are provided on the A plate 10; a sprue plate 20 is provided on the fixed mold, and a radial glue feeding flow channel 2 is provided on the sprue plate 20, and a pressurized liquid storage tank 30 connected to the glue feeding flow channel 2 is provided at the central axis thereof, and the end of the glue feeding flow channel 2 is connected to a plurality of hot nozzles 40, each of the hot nozzles 40 passes through the sprue plate 20 and extends to the A plate 10 to be connected to a plurality of molding flow channels 3 thereon, and each molding flow channel 3 passes through the A plate 10 and is connected to a mold cavity 1.

[0021] In this embodiment, the glue inlet channel 2 is a centrally symmetrical structure, and the pressurized liquid storage tank 20 is arranged on its central axis to ensure that the glue entering each hot nozzle 40 maintains approximately the same hydraulic pressure.

[0022] Furthermore, the number of the hot nozzles 40 is the same as the number of the mold cavities 1 , and the plurality of molding runners 3 connected to the same hot nozzle 40 are all connected to the same mold cavity 1 .

[0023] Furthermore, each molding flow channel 3 includes a first flow channel 301 and a second flow channel 302 that are connected to each other. Each first flow channel 301 is arranged at one end of the A plate 10 and is connected to a hot nozzle 40. Each second flow channel 302 passes through the A plate 10 and is connected to a mold cavity 1 arranged at the other end thereof.

[0024] Furthermore, a sprue hook 4 is provided on the sprue plate 20, each sprue hook 4 extends in the same direction as the second flow channel 302, and its end extends to the end of a second flow channel 302, and each sprue hook 4 is transmission connected to a driving device and can approach or move away from the second flow channel 302 under the drive of the driving device.

[0025] Furthermore, a slag removal groove 303 is provided at the end of each first flow channel 301 , and each slag removal groove 303 is connected to the exhaust hole groove 304 .

[0026] Furthermore, a cooling pipeline 50 connected to the mold water cooling system is provided on the periphery of each hot nozzle 40 , and control valves are provided on several cooling pipelines 50 , and each control valve is electrically connected to the temperature control component 41 on each hot nozzle 40 .

[0027] The hot nozzle is a component commonly used in plastic molds to adjust the temperature of the glue injection. Its specific structure and working principle are common knowledge to those skilled in the art and will not be described in detail here.

[0028] During molding, the glue in the pressurized liquid storage tank 30 enters several hot nozzles 40 through the glue inlet flow channel 1 on the nozzle plate 20. Each hot nozzle 40 independently controls the temperature of the glue therein to ensure that the glue entering each mold cavity 1 maintains consistent parameters. The glue flows into the second flow channel 302 through the first flow channel 301 and then enters the mold cavity for molding. The release agent and other impurities in the flow channel are flushed into the slag removal groove 303 to form a slag bag. The gas in the flow channel is discharged through the exhaust hole groove 304 to ensure that the glue fills the flow channel. After completion, the mold is opened, and the movable mold drives the product to leave the fixed mold and pushes the product out of the movable mold. After the movable mold moves a distance, it pulls the A plate 10 to separate from the nozzle plate 20. The nozzle hook 4 on the nozzle plate 20 pulls the nozzle 5 in the molding flow channel 3 to separate from the A plate 10. At this time, the nozzle 5 can be removed from the nozzle hook 4 manually or by using a robot.

[0029] The novel method of using the present invention can ensure that the glue liquid entering each hot nozzle 40 maintains approximately the same hydraulic pressure by arranging the pressurized liquid storage tank 30 on the central axis of the glue inlet flow channel 2; by arranging a plurality of molding channels at the end of each hot nozzle 40, the temperature of the glue liquid entering each mold cavity 1 can be independently adjusted by the hot nozzle 40, thereby ensuring that the glue liquid in each mold cavity 1 is at a good molding temperature and the molding quality is ensured; by arranging a slag removal groove 303 at the end of each first channel 301 and connecting it with the exhaust hole groove 304, a discharge space is reserved for the slag and gas in the flow channel, thereby ensuring the quality of the glue liquid entering the mold cavity 1, and avoiding or slowing down the formation of bubbles and black spots inside or on the surface of the product due to impure glue during the molding process.

[0030] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A plastic injection structure of a one-mold multi-cavity plastic mold, mounted on a fixed mold, the fixed mold is provided with an A plate, and the A plate is provided with more than two mold cavities; characterized in that: A sprue plate is provided on the fixed mold, a radial glue feed channel is provided on the sprue plate, a pressurized liquid storage tank connected to the glue feed channel is provided at the central axis of the glue feed channel, the end of the glue feed channel is connected to a plurality of hot nozzles, each of the hot nozzles passes through the sprue plate and extends to the A plate to be connected to a plurality of molding channels on it, and each of the molding channels passes through the A plate and is connected to a mold cavity.

2. The glue feeding structure of a one-mold multi-cavity plastic mold according to claim 1, characterized in that: The number of the hot nozzles is the same as the number of the mold cavities, and the plurality of molding flow channels connected to the same hot nozzle are all connected to the same mold cavity.

3. The glue feeding structure of a one-mold multi-cavity plastic mold according to claim 1, characterized in that: Each of the molding flow channels includes a first flow channel and a second flow channel that are connected. Each of the first flow channels is arranged at one end of the A plate and is connected to a hot nozzle. Each of the second flow channels passes through the A plate and is connected to a mold cavity arranged at the other end thereof.

4. The glue feeding structure of a one-mold multi-cavity plastic mold according to claim 3, characterized in that: A sprue hook is provided on the sprue plate, each of the sprue hooks extends in the same direction as the second flow channel, and its end extends to an end of the second flow channel. Each of the sprue hooks is transmission connected to a driving device and can approach or move away from the second flow channel under the drive of the driving device.

5. The glue feeding structure of a one-mold multi-cavity plastic mold according to claim 3, characterized in that: A slag removal groove is also provided at the end of each of the first flow channels, and each of the slag removal grooves is connected to the exhaust hole groove.

6. A glue feeding structure of a one-mold multi-cavity plastic mold according to any one of claims 1 to 5, characterized in that: The periphery of each hot nozzle is provided with a cooling pipeline connected to the mold water cooling system, and a number of the cooling pipelines are provided with control valves, and each of the control valves is electrically connected to the temperature control component on each hot nozzle.

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