Multi-cavity mold injection molding equipment and method

Abstract

The invention belongs to the technical field of injection molding, and provides multi-cavity mold injection molding equipment and method.The multi-cavity mold injection molding equipment comprises a rack, an injection molding pipe, an injection mold and a feeding pipe, the injection molding pipe, the injection mold and the feeding pipe are arranged on the rack, and a discharging port of the feeding pipe is connected and communicated with a feeding port of the injection molding pipe; the pretreatment assembly is used for pretreating the raw materials so as to remove moisture in the raw materials; the conveying assembly is used for conveying the pretreated raw materials into the feeding pipe; and the feeding assembly is used for conveying the raw materials to the pretreatment assembly. According to the multi-cavity mold injection molding equipment and method, the structure is simple, and moisture in raw materials can be removed.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and specifically to a multi-cavity mold injection molding equipment and method. Background Technology

[0002] Injection molding equipment, also known as injection molding machine, is the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds.

[0003] However, current injection molding equipment may contain moisture in the plastic raw materials during the injection process. Moisture in the raw materials will generate bubbles in the molten state, resulting in air bubbles or pores inside the finished product, leading to quality problems such as reduced strength. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of this invention is to provide a multi-cavity mold injection equipment and method to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0005] To achieve the above objectives, on one hand, the present invention provides a multi-cavity mold injection molding equipment, including a frame and an injection pipe, an injection mold, and a feed pipe disposed on the frame, wherein the outlet of the feed pipe is connected to and communicates with the inlet of the injection pipe, and further includes:

[0006] A pretreatment assembly, disposed on the frame, is used to pretreat raw materials to remove moisture from them;

[0007] A conveying assembly, mounted on the frame, has its inlet connected to and communicating with the pretreatment assembly, and its outlet connected to and communicating with the inlet of the feed pipe. The conveying assembly is used to convey the pretreated raw materials into the feed pipe.

[0008] A feeding assembly is mounted on the frame. The outlet of the feeding assembly is connected to and communicates with the inlet of the pretreatment assembly, and the inlet is connected to and communicates with the feeding funnel. The feeding assembly is used to transport raw materials to the pretreatment assembly.

[0009] Furthermore, both the conveying assembly and the feeding assembly are screw conveyors.

[0010] Furthermore, the preprocessing component includes:

[0011] A pretreatment box, fixedly mounted on a frame, has its inlet connected to and communicating with the outlet of the feeding assembly, and its outlet connected to and communicating with the inlet of the conveying assembly. A first control valve and a second control valve are respectively installed at the inlet and outlet of the pretreatment box.

[0012] Heating elements are mounted on the pretreatment box.

[0013] Furthermore, the pretreatment box is provided with an air outlet, which is connected to and communicates with the air inlet of the vacuum system, and a third control valve is provided at the air outlet.

[0014] Furthermore, the pretreatment component also includes a lifting structure, the lifting structure comprising:

[0015] A rotating seat is coaxially inserted into the pretreatment box and located at the first end of the pretreatment box; the rotating seat is rotatably connected to the pretreatment box.

[0016] The lifting blades are fixedly connected to the first section and the rotating base, and their second end is attached to the inner wall of the second end of the pretreatment box. The side of the lifting blade away from the rotation center line of the rotating base is attached to the inner wall of the pretreatment box. Multiple lifting blades are provided, and these blades are evenly arranged around the rotation center line of the rotating base.

[0017] The lifting motor has its power output shaft connected to the rotating base to drive the rotating base to rotate.

[0018] Furthermore, the pretreatment component also includes an arc-shaped plate with a central angle α, wherein 90°≤α≤180°. The arc-shaped plate is coaxially arranged inside the pretreatment box. The first end of the arc-shaped plate is fixedly connected to the second end of the pretreatment box, and the second end is attached to the rotating seat. The side of the lifting blade facing the rotation center line of the rotating seat can be attached to the outer wall of the arc-shaped plate.

[0019] Furthermore, multiple pretreatment components are provided, and the multiple pretreatment components are arranged sequentially at intervals along the length direction of the spiral conveyor.

[0020] Furthermore, the injection mold is a multi-cavity mold.

[0021] On the other hand, the present invention also provides an injection molding method for use in the multi-cavity mold injection molding equipment described in any one of the above claims, comprising the following steps:

[0022] S1, the feeding assembly conveys the raw materials into the pretreatment assembly;

[0023] S2, the pretreatment component pretreatments the raw materials;

[0024] S3, the conveying assembly conveys the raw materials to the feed pipe.

[0025] The beneficial effects of this invention are:

[0026] The multi-cavity mold injection equipment and method provided by the present invention, by setting a pretreatment component, removes moisture from the raw materials during operation, thereby avoiding finished product quality problems caused by moisture in the raw materials. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0028] Figure 1 This is a perspective view of a multi-cavity mold injection molding equipment provided in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 An enlarged view of part A shown;

[0030] Figure 3 for Figure 1 A perspective view of the pretreatment components of the multi-cavity mold injection molding equipment shown;

[0031] Figure 4 for Figure 3 The front view of the pretreatment components of the multi-cavity mold injection equipment shown;

[0032] Figure 5 for Figure 4 A cross-sectional perspective view along the BB direction shown;

[0033] Figure 6 for Figure 4 The cross-sectional view shown in the CC direction;

[0034] Figure 7 for Figure 1 The front view of the arc plate of the pretreatment component of the multi-cavity mold injection equipment shown.

[0035] Figure label:

[0036] 100. Frame; 200. Injection pipe; 300. Injection mold; 400. Feed pipe; 500. Pre-treatment assembly; 510. Pre-treatment box; 511. First control valve; 512. Second control valve; 520. Heating element; 530. Pipe; 531. Third control valve; 541. Rotary seat; 542. Lifting blades; 543. Lifting motor; 550. Arc plate; 551. Vent; 600. Conveying assembly; 700. Feeding assembly; 800. Feeding funnel. Detailed Implementation

[0037] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0038] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by those skilled in the art to which this invention pertains.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0040] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] like Figure 1-7As shown, this invention provides a multi-cavity mold injection molding device, including a frame 100. An injection pipe 200, an injection mold 300, and a feed pipe 400 are mounted on the frame 100. The outlet of the feed pipe 400 is connected to and communicates with the inlet of the injection pipe 200. Specifically, in this embodiment, the injection mold 300 is a multi-cavity mold. These are all existing technologies and will not be described in detail here.

[0044] In addition to the above-described structure, the multi-cavity mold injection equipment provided in this embodiment also includes a pretreatment component 500, a conveying component 600, and a feeding component 700.

[0045] The pretreatment component 500 is mounted on the frame 100 and is used to pretreat the raw materials to remove moisture. The conveying component 600 is also mounted on the frame 100. The inlet of the conveying component 600 is connected to and communicates with the pretreatment component 500, and the outlet is connected to and communicates with the inlet of the feed pipe 400. The conveying component 600 is used to convey the pretreated raw materials into the feed pipe 400. Specifically, in this embodiment, the conveying component 600 is a screw conveyor.

[0046] The feeding assembly 700 is mounted on the frame 100. The outlet of the feeding assembly 700 is connected to and communicates with the inlet of the pretreatment assembly 500, and the inlet is connected to and communicates with the feeding funnel 800. The feeding assembly 700 is used to transport raw materials to the pretreatment assembly 500. Specifically, in this embodiment, the feeding assembly 700 is a screw conveyor.

[0047] During operation, firstly, the feeding component 700 conveys the raw materials in the feeding funnel 800 to the pretreatment component 500; the pretreatment component 500 then pre-treats the raw materials to remove moisture; after the pretreatment is completed, the conveying component 600 conveys the pre-treated raw materials into the feeding pipe 400.

[0048] The multi-cavity mold injection equipment provided in this embodiment, by setting a pretreatment component 500, removes moisture from the raw materials during operation, thereby achieving the purpose of avoiding finished product quality problems caused by moisture in the raw materials.

[0049] like Figures 2-6 As shown, in this embodiment, the pretreatment component 500 includes a pretreatment chamber 510 and a heating element 520.

[0050] The pretreatment box 510 is fixedly mounted on the frame 100. The inlet of the pretreatment box 510 is connected to and communicates with the outlet of the feeding assembly 700, and the outlet is connected to and communicates with the inlet of the conveying assembly 600. A first control valve 511 and a second control valve 512 are respectively installed at the inlet and outlet of the pretreatment box 510. A heating element 520 is sleeved on the pretreatment box 510. Specifically, the heating element 520 can be a heating wire, a heating plate, or a heat pipe.

[0051] During feeding, the first control valve 511 is opened and the second control valve 512 is closed, so that the raw materials conveyed by the feeding assembly 700 can enter the pretreatment box 510 from the feed port.

[0052] During pretreatment, the first control valve 511 and the second control valve 512 are closed, and the heating element 520 heats the pretreatment box 510, thereby heating the raw materials in the pretreatment box 510. The moisture in the raw materials evaporates after being heated, thereby removing the moisture from the raw materials. The structure is simple.

[0053] During discharge, the first control valve 511 is closed and the second control valve 512 is opened, so that the raw materials in the pretreatment box 510 can enter the conveying assembly 600 from the discharge port of the pretreatment box 510 and be finally conveyed by the conveying assembly 600 to the feed pipe 400.

[0054] like Figures 2-5 As shown, in this embodiment, the pretreatment box 510 is provided with an air outlet, which is connected to the air inlet of the vacuum system through a pipe 530. A third control valve 531 is provided on the pipe 530.

[0055] During the pretreatment of raw materials, the third control valve 531 opens, and the vacuum system extracts the gas from the pretreatment chamber 510, thereby reducing the pressure inside the chamber. Since higher gas pressure corresponds to a higher boiling point of water, and vice versa, the vacuum system's extraction of gas from the pretreatment chamber 510 lowers the pressure, allowing the moisture in the raw materials to change from a liquid to a gaseous state at a lower temperature. This eliminates the need to heat the raw materials to excessively high temperatures, enabling rapid evaporation of moisture and resulting in higher efficiency. Simultaneously, the lower pretreatment temperature also prevents oxidation and thermal damage to the raw materials.

[0056] like Figure 5 and Figure 6 As shown, in this embodiment, the pretreatment component 500 further includes a lifting structure, which includes a rotating base 541, lifting blades 542, and a lifting motor 543.

[0057] A rotating base 541 is coaxially disposed within a pretreatment box 510 and located at the first end of the pretreatment box 510, and is rotatably connected to the pretreatment box 510. The first end of a lifting blade 542 is fixedly connected to the rotating base 541, and the second end is attached to the inner wall of the second end of the pretreatment box 510. The side of the lifting blade 542 away from the rotation center line of the rotating base 541 is attached to the inner wall of the pretreatment box 510. Multiple lifting blades 542 are provided, and these blades are evenly arranged around the rotation center line of the rotating base 541. Specifically, in this embodiment, six lifting blades 542 are provided. The power output shaft of the lifting motor 543 is connected to the rotating base 541 to drive the rotating base 541 to rotate.

[0058] During pretreatment, the lifting motor 543 drives the rotating seat 541 to rotate, which in turn drives the lifting blades 542 to rotate. Under the action of the lifting blades 542, the raw materials in the pretreatment box 510 are lifted up, thereby achieving the purpose of uniform heating of the raw materials in the pretreatment box 510, and thus improving the pretreatment effect and efficiency.

[0059] like Figure 5 , Figure 6 and Figure 7 As shown, the pretreatment assembly 500 also includes an arc-shaped plate 550, with a central angle α corresponding to the arc-shaped plate 550, where 90°≤α≤180°. The arc-shaped plate 550 is coaxially arranged inside the pretreatment box 510. The first end of the arc-shaped plate 550 is fixedly connected to the second end of the pretreatment box 510, and the second end is attached to the rotating seat 541. The side of the lifting blade 542 facing the rotation center line of the rotating seat 541 can be attached to the outer wall of the arc-shaped plate 550. This allows any two adjacent lifting blades 542 to correspond to the arc-shaped plate 550, forming a storage cavity between the arc-shaped plate 550, the lifting blades 542, and the pretreatment box 510. This allows the lifting blades 542 to carry the raw material to a higher position before dumping it down, so that the raw material can move from top to bottom for a longer time each time it is lifted, thereby avoiding excessive accumulation of raw material and improving the pretreatment effect.

[0060] Preferably, the arc-shaped plate 550 has a plurality of ventilation holes 551.

[0061] like Figure 1 As shown, in this embodiment, multiple pretreatment components 500 are provided, and the multiple pretreatment components 500 are arranged sequentially at intervals along the length direction of the screw conveyor.

[0062] During operation, the feeding component 700 sequentially feeds raw materials into each pretreatment component 500, thereby improving pretreatment efficiency.

[0063] The present invention also provides an injection molding method for use in the multi-cavity mold injection molding equipment described in any of the above embodiments, comprising the following steps:

[0064] S1, the feeding component 700 conveys the raw materials into the pretreatment component 500;

[0065] S2, Pre-treatment component 500 pre-treats the raw materials;

[0066] S3, the conveying assembly 600 conveys the raw materials to the feed pipe 400.

[0067] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A multi-cavity mold injection molding equipment, comprising a frame and an injection pipe, an injection mold, and a feed pipe mounted on the frame, wherein the outlet of the feed pipe is connected to and communicates with the inlet of the injection pipe, characterized in that, Also includes: A pretreatment assembly, disposed on the frame, is used to pretreat the raw materials to remove moisture from them; A conveying assembly is mounted on the frame. The inlet of the conveying assembly is connected to and communicates with the pretreatment assembly, and the outlet is connected to and communicates with the inlet of the feed pipe. The conveying assembly is used to convey the pretreated raw materials into the feed pipe. as well as A feeding assembly is mounted on the frame. The outlet of the feeding assembly is connected to and communicates with the inlet of the pretreatment assembly, and the inlet is connected to and communicates with the feeding funnel. The feeding assembly is used to transport raw materials to the pretreatment assembly.

2. The multi-cavity mold injection molding equipment according to claim 1, characterized in that, Both the conveying assembly and the feeding assembly are screw conveyors.

3. The multi-cavity mold injection molding equipment according to claim 2, characterized in that, The preprocessing components include: A pretreatment box, fixedly mounted on a frame, has its inlet connected to and communicating with the outlet of the feeding assembly, and its outlet connected to and communicating with the inlet of the conveying assembly. A first control valve and a second control valve are respectively installed at the inlet and outlet of the pretreatment box. Heating elements are mounted on the pretreatment box.

4. The multi-cavity mold injection molding equipment according to claim 3, characterized in that, The pretreatment box is provided with an air outlet, which is connected to and communicates with the air inlet of the vacuum system, and a third control valve is provided at the air outlet.

5. The multi-cavity mold injection molding equipment according to claim 3 or 4, characterized in that, The pretreatment component further includes a lifting structure, the lifting structure comprising: A rotating seat is coaxially inserted into the pretreatment box and located at the first end of the pretreatment box; the rotating seat is rotatably connected to the pretreatment box. The lifting blades are fixedly connected to the first section and the rotating base, and their second end is attached to the inner wall of the second end of the pretreatment box. The side of the lifting blade away from the rotation center line of the rotating base is attached to the inner wall of the pretreatment box. Multiple lifting blades are provided, and these blades are evenly arranged around the rotation center line of the rotating base. The lifting motor has its power output shaft connected to the rotating base to drive the rotating base to rotate.

6. The multi-cavity mold injection molding equipment according to claim 5, characterized in that, The pretreatment assembly also includes an arc-shaped plate with a central angle α, where 90°≤α≤180°. The arc-shaped plate is coaxially arranged inside the pretreatment box. The first end of the arc-shaped plate is fixedly connected to the second end of the pretreatment box, and the second end is attached to the rotating seat. The side of the lifting blade facing the rotation center line of the rotating seat can be attached to the outer wall of the arc-shaped plate.

7. The multi-cavity mold injection molding equipment according to claim 6, characterized in that, The pretreatment components are provided in multiple ways, and the multiple pretreatment components are arranged at intervals along the length direction of the spiral conveyor.

8. The multi-cavity mold injection molding equipment according to claim 1, 2, 3, 4, 6 or 7, characterized in that, The injection mold is a multi-cavity mold.

9. An injection molding method for use in the multi-cavity mold injection molding equipment according to any one of claims 1-8, characterized in that, Includes the following steps: S1, the feeding assembly conveys the raw materials into the pretreatment assembly; S2, the pretreatment component pretreatments the raw materials; S3, the conveying assembly conveys the raw materials to the feed pipe.

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