Waste discharging structure of injection molding opening of mold

Abstract

The utility model discloses a mold injection molding port waste discharge structure, which relates to the technical field of injection molding, and comprises an injection mold, the injection mold is fixedly provided with an injection molding port, the injection mold is provided with a conveying pipeline and a mounting groove, and the injection molding port is provided with a discharge assembly. The discharging assembly comprises a heat preservation shell fixedly installed on the outer side of the injection molding opening and a cleaning piston movably installed at the bottom of the injection molding opening, an electric heating wire is fixedly installed in the heat preservation shell, a nut frame is fixedly installed in the middle of the cleaning piston, and a cleaning ejector rod is installed in the nut frame in a threaded mode. A linear groove is formed in the upper end of the cleaning ejector rod, butt joint threads are arranged at the lower end of the cleaning ejector rod, and an inflation mechanism is connected to the bottom of the injection molding opening and comprises an inflation cylinder fixedly installed on the injection mold. According to the mold injection molding opening waste discharging structure, through cooperative use of the discharging assembly and the inflation mechanism, injection molding and conveying pipelines can be rapidly cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a waste material discharge structure at an injection molding port of a mold. Background Art

[0002] Injection molds are specialized tools used in the plastic injection molding process. They inject heated, molten plastic and allow it to cool and solidify within the mold cavity, resulting in a desired plastic product shape. Injection molds are widely used in a variety of fields, including automotive, electronics, medical, packaging, consumer goods, and industrial equipment. They can efficiently and accurately produce a variety of complex shapes and high-precision plastic parts, such as automotive parts, electronic housings, and medical devices. The characteristics of injection molds, including high precision, long life, versatility, and efficient automated production, make them an indispensable tool in the modern plastics processing industry.

[0003] When the injection mold is in use, raw materials need to be added into the injection mold through the injection port. The raw materials entering the injection mold may remain in the injection port and the conveying pipeline. If they are not cleaned for a long time, the injection port and the conveying pipeline are easily blocked, thereby affecting the injection molding of the product. Therefore, a mold injection port waste discharge structure is proposed. Summary of the Invention

[0004] The utility model aims to provide a waste material discharge structure for a mold injection port, so as to solve the problem in the prior art that the injection port is difficult to clean after being clogged.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a waste material discharge structure of a mold injection port, comprising an injection mold, the injection mold is fixedly installed with an injection port, the injection mold is provided with a conveying pipeline and a mounting groove, the injection port is provided with a discharge assembly, the discharge assembly comprises a heat-insulating shell fixedly installed on the outside of the injection port and a cleaning piston movably installed at the bottom of the injection port, a heating wire is fixedly installed in the heat-insulating shell, a nut rack is fixedly installed in the middle position of the cleaning piston, a cleaning ejector rod is threadedly installed in the nut rack, a slot is provided at the upper end of the cleaning ejector rod, a docking thread is provided at the lower end of the cleaning ejector rod, an inflation mechanism is connected to the bottom of the injection port, the inflation mechanism comprises an inflation cylinder body fixedly installed on the injection mold, a return spring is provided in the inflation cylinder body, a piston plate is movably installed in the inflation cylinder body, the bottom of the inflation cylinder body is connected to a gas pipeline, a one-way air outlet valve is provided in the gas pipeline, and the inflation cylinder body and the injection port are connected through the gas pipeline.

[0006] Preferably, a feeding port is provided in the middle of the cleaning piston, and the feeding port is aligned with the conveying pipeline on the injection mold in the upper and lower directions, and the raw material in the injection port can pass through the cleaning piston through the feeding port.

[0007] Preferably, the upper and lower ends of the heat-insulating shell are provided with docking ports, and the heat-insulating shell is connected to the injection molding port through the docking ports. The heat-insulating shell can reduce heat loss of the heating wire.

[0008] Preferably, the heating wire is installed on the outside of the injection port through the insulation shell, the cleaning push rod is installed on the nut rack through the docking thread, the cleaning push rod is installed above the feed port through the nut rack, and the cleaning push rod is aligned with the feed port up and down, and the cleaning push rod can enter the conveying pipeline.

[0009] Preferably, an air inlet is provided at the bottom of the inflatable cylinder, and a one-way air inlet valve is provided in the air inlet, and the one-way air inlet valve only allows external gas to enter the inflatable cylinder through the air inlet.

[0010] Preferably, the one-way air outlet valve only allows the gas in the inflation cylinder to be discharged through the gas pipeline.

[0011] Preferably, the air supply pipe is installed in the injection mold through the mounting groove, one end of the air supply pipe is connected to the inflation cylinder body, and the other end of the air supply pipe is connected to the injection port, one end of the return spring is connected to the bottom of the inflation cylinder body, and the other end of the return spring is connected to the piston plate. The return spring provides elastic force for the piston plate, so that the piston plate has a tendency to move upward.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In this application, the electric heating wire can melt the plastic inside the injection port. After the plastic is melted, a screwdriver can be used to rotate the cleaning push rod to move the cleaning push rod downward to block the feed port. After the feed port is blocked, the piston plate can be pressed back and forth to squeeze the gas in the inflation cylinder into the injection port, so that the cleaning piston moves upward to squeeze out the waste material in the injection port, and the injection port is quickly cleaned.

[0014] In this application, after the injection port is cleaned, the piston plate can be inverted and placed in the injection port. After the piston plate is inverted and placed in the injection port, the piston plate can be pressed down. After pressing the piston plate down, it will drive the cleaning push rod into the conveying pipeline, thereby ejecting the waste in the conveying pipeline and quickly cleaning the conveying pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the discharge assembly of the present utility model;

[0018] Figure 4It is a schematic diagram of the inflation mechanism of the present utility model.

[0019] Numbers in the figure: Schematic diagram of a new type of inflation mechanism.

[0020] Numbers in the figure: 1. Injection mold; 2. Injection port; 3. Delivery pipeline; 4. Mounting groove; 5. Discharge assembly; 501. Insulation shell; 502. Heating wire; 503. Cleaning push rod; 504. Slotted groove; 505. Docking thread; 506. Nut rack; 507. Feed port; 508. Cleaning piston; 6. Inflating mechanism; 601. Inflating cylinder; 602. Piston plate; 603. Return spring; 604. One-way air inlet valve; 605. Air inlet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2 As shown, the utility model provides a technical solution for the waste discharge structure of the mold injection port, including an injection mold 1, the injection mold 1 is fixedly installed with an injection port 2, the injection mold 1 is provided with a conveying pipeline 3 and a mounting groove 4, the injection port 2 is provided with a discharge component 5, and the bottom of the injection port 2 is connected to an inflation mechanism 6. By using the discharge component 5 in conjunction with the inflation mechanism 6, the injection port 2 and the conveying pipeline 3 can be quickly cleaned.

[0023] like Figure 2 and Figure 3 As shown, the discharge component 5 includes an insulating shell 501 fixedly mounted on the outside of the injection port 2 and a cleaning piston 508 movably mounted on the bottom of the injection port 2. A heating wire 502 is fixedly mounted in the insulating shell 501, a nut rack 506 is fixedly mounted in the middle position of the cleaning piston 508, a cleaning push rod 503 is threadedly mounted on the inner thread of the nut rack 506, a slot 504 is provided at the upper end of the cleaning push rod 503, a docking thread 505 is provided at the lower end of the cleaning push rod 503, a feed port 507 is provided in the middle position of the cleaning piston 508, and the feed port 507 is aligned with the conveying pipeline 3 on the injection mold 1 up and down, and docking interfaces are provided at the upper and lower ends of the insulating shell 501, and the insulating shell 501 is connected to the injection port 2 through the docking interfaces.

[0024] Specifically, after the cleaning push rod 503 is rotated downward, it will block the feed port 507. After the feed port 507 is blocked, the piston plate 602 can be pressed back and forth to make the cleaning piston 508 move upward, squeezing out the waste material in the injection port 2, and quickly cleaning the injection port 2. After the injection port 2 is cleaned, the piston plate 602 can be inverted and placed in the injection port 2. After the piston plate 602 is inverted and placed in the injection port 2, the piston plate 602 can be pressed down. After pressing the piston plate 602 down, it will drive the cleaning push rod 503 to enter the conveying pipeline 3, thereby ejecting the waste material in the conveying pipeline 3, and quickly cleaning the conveying pipeline 3.

[0025] like Figure 2 and Figure 3 As shown, the inflation mechanism 6 includes an inflation cylinder body 601 fixedly mounted on the injection mold 1, a return spring 603 is provided in the inflation cylinder body 601, a piston plate 602 is movably installed in the inflation cylinder body 601, the bottom of the inflation cylinder body 601 is connected to an air supply pipeline 607, a one-way air outlet valve 606 is provided in the air supply pipeline 607, an air inlet 605 is opened at the bottom of the inflation cylinder body 601, a one-way air inlet valve 604 is provided in the air inlet 605, and the one-way air inlet valve 604 only allows external gas to enter the inflation cylinder body 601 through the air inlet 605, and the one-way air outlet valve 606 only allows the gas in the inflation cylinder body 601 to be discharged through the air supply pipeline 607.

[0026] Specifically, after pressing the piston plate 602, it will move downward, thereby squeezing the gas in the inflation cylinder 601 into the injection port 2. When the piston plate 602 is released, the return spring 603 will drive the piston plate 602 to move upward, thereby sucking the outside air into the inflation cylinder 601. After pressing the piston plate 602 back and forth, the gas in the inflation cylinder 601 will be squeezed into the injection port 2, controlling the rise and fall of the piston plate 602.

[0027] Working principle: When the injection port 2 is blocked, the power supply of the heating wire 502 can be connected and the delivery pipeline 3 can be blocked. After the power supply of the heating wire 502 is connected, it will generate heat to melt the plastic inside the injection port 2. After the plastic is melted, a screwdriver can be connected to the slot 504, and the screwdriver can be used to rotate the cleaning push rod 503 to move the cleaning push rod 503 downward to block the feed port 507. After the feed port 507 is blocked, the piston plate 602 can be pressed back and forth. Since one end of the gas pipeline 607 is connected to the inflation cylinder 601, and the other end of the gas pipeline 607 is connected to the injection port 2, after pressing the piston plate 602, it will move downward, thereby squeezing the gas in the inflation cylinder 601 into the injection port 2. When the piston plate 602 is released inside the molding port 2, the return spring 603 will drive the piston plate 602 to move upward, thereby sucking the outside air into the inflation cylinder 601. After the gas in the inflation cylinder 601 is squeezed into the injection molding port 2, the cleaning piston 508 will move upward. After the cleaning piston 508 moves upward, the waste material in the injection molding port 2 will be squeezed out, and the injection molding port 2 will be cleaned quickly. After the injection molding port 2 is cleaned, the piston plate 602 can be inverted and placed in the injection molding port 2. After the piston plate 602 is inverted and placed in the injection molding port 2, the piston plate 602 can be pressed down. After pressing down the piston plate 602, it will drive the cleaning push rod 503 to enter the conveying pipeline 3, thereby ejecting the waste material in the conveying pipeline 3.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A mold injection port waste discharge structure, comprising an injection mold (1), wherein the injection mold (1) is fixedly mounted with an injection port (2), and the injection mold (1) is provided with a conveying pipeline (3) and a mounting groove (4), characterized in that: The injection port (2) is provided with a discharge assembly (5), the discharge assembly (5) comprising a heat-insulating shell (501) fixedly mounted on the outside of the injection port (2) and a cleaning piston (508) movably mounted on the bottom of the injection port (2), a heating wire (502) fixedly mounted in the heat-insulating shell (501), a nut rack (506) fixedly mounted in the middle of the cleaning piston (508), a cleaning ejector rod (503) being mounted on the inner thread of the nut rack (506), and a slot (504) being provided on the upper end of the cleaning ejector rod (503) ), the lower end of the cleaning ejector rod (503) is provided with a docking thread (505), the bottom of the injection port (2) is connected to an inflation mechanism (6), the inflation mechanism (6) comprises an inflation cylinder (601) fixedly mounted on the injection mold (1), a return spring (603) is provided in the inflation cylinder (601), a piston plate (602) is movably mounted in the inflation cylinder (601), the bottom of the inflation cylinder (601) is connected to an air supply pipeline (607), and a one-way air outlet valve (606) is provided in the air supply pipeline (607).

2. The mold injection port waste discharge structure according to claim 1, characterized in that: A feeding port (507) is provided in the middle of the cleaning piston (508), and the feeding port (507) is aligned vertically with the delivery pipeline (3) on the injection mold (1).

3. The mold injection port waste discharge structure according to claim 2, characterized in that: The upper and lower ends of the heat-insulating shell (501) are both provided with docking ports, and the heat-insulating shell (501) is connected to the injection molding port (2) via the docking ports.

4. The mold injection port waste discharge structure according to claim 3, characterized in that: The heating wire (502) is installed on the outside of the injection port (2) through the heat-insulating housing (501), the cleaning ejector rod (503) is installed on the nut rack (506) through the docking thread (505), and the cleaning ejector rod (503) is installed above the feed port (507) through the nut rack (506), and the cleaning ejector rod (503) is aligned with the feed port (507) in an upper and lower direction.

5. The mold injection port waste discharge structure according to claim 4, characterized in that: An air inlet (605) is provided at the bottom of the inflation cylinder (601), and a one-way air inlet valve (604) is provided in the air inlet (605). The one-way air inlet valve (604) only allows external gas to enter the inflation cylinder (601) through the air inlet (605).

6. The mold injection port waste discharge structure according to claim 1, characterized in that: The one-way gas outlet valve (606) only allows the gas in the inflation cylinder (601) to be discharged through the gas transmission pipe (607).

7. The mold injection port waste discharge structure according to claim 1, characterized in that: The air delivery pipe (607) is installed in the injection mold (1) through the installation groove (4), one end of the air delivery pipe (607) is connected to the inflation cylinder (601), and the other end of the air delivery pipe (607) is connected to the injection port (2), one end of the return spring (603) is connected to the bottom of the inflation cylinder (601), and the other end of the return spring (603) is connected to the piston plate (602).

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