Injection molding machine with gas protection device

Abstract

The utility model is suitable for the technical field of injection molding equipment, and provides an injection molding machine with a gas protection device, which comprises an injection assembly, a detection assembly and a protection assembly, the injection assembly comprises a storage tank and an injection cylinder, the detection assembly is connected with the storage tank, and the detection assembly is used for detecting the concentration of oxygen in the storage tank; the protection assembly is used for providing gas protection for materials and comprises a first blowing part and a second blowing part. According to the device, the oxygen concentration in the storage tank is detected through the detection assembly, so that the situation that materials are oxidized due to the fact that the oxygen concentration in the storage tank is too high can be avoided, the first blowing piece is arranged at the discharging opening of the storage tank, and the materials at the discharging opening are protected through gas blown out by the first blowing piece to avoid material oxidation; and when the material is injected by the injection cylinder and is injected through the nozzle, gas blown out by the second blowing piece is used for protecting the material, so that the material is prevented from being in contact with air to generate oxidation, and the influence of material leakage on the product forming effect is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding equipment technology, and in particular relates to an injection molding machine with a gas protection device. Background Technology

[0002] Injection molding equipment plays a crucial role in the molding process. It enables the injection molding process by collaboratively completing a series of steps, including feeding, plasticizing, mold filling, pressure holding and shrinkage compensation, cooling, and demolding, ultimately forming the desired plastic product. Injection molding equipment is indispensable; by precisely controlling various parameters during the injection process, it ensures the high-quality production of plastic products and is widely used in numerous industries, providing vital support for the development of modern manufacturing.

[0003] In the existing technology, during the injection molding process of most products, the material comes into contact with air before entering the mold cavity, which causes oxidation. This leads to appearance defects or performance degradation in the molded product, affecting the yield rate of the product. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide an injection molding machine with a gas protection device, which aims to solve the problem that in the injection molding process of most products, the material will oxidize due to contact with air before entering the mold cavity, resulting in appearance defects or performance degradation of the molded product, thus affecting the yield of the product.

[0005] This utility model embodiment is implemented as follows: an injection molding machine with a gas protection device, the injection molding machine with the gas protection device includes:

[0006] An injection assembly, comprising a storage tank and an injection cylinder, wherein the injection assembly is used to inject material from the storage tank into the mold cavity through the nozzle of the injection cylinder;

[0007] A detection component, connected to a storage tank, is used to detect the oxygen concentration in the storage tank;

[0008] A protective assembly located outside the injection barrel is used to provide gas protection for the material. The protective assembly includes a first air blower and a second air blower. The first air blower faces the discharge port of the storage tank to protect the material being conveyed from the storage tank to the injection barrel, and the second air blower faces the nozzle of the injection barrel to protect the material injected into the mold cavity by the nozzle.

[0009] Preferably, the protective assembly further includes an air valve, multiple air pipes, and a first detection element. The air valve is used to control the gas flow to the first air blowing element and the second air blowing element. The air valve is provided with an air inlet and multiple air outlets. The air inlet is connected to a gas generator, and each of the air outlets is connected to an air pipe.

[0010] The first air blowing component, the second air blowing component, and the first detection component are each connected to an air pipe. The first detection component is used to detect the air pressure of the gas generator.

[0011] Preferably, the protective assembly further includes a first regulating valve and a second regulating valve, wherein the first connecting end of the first regulating valve is connected to the first air blowing element, and the second connecting end of the first regulating valve is connected to the first air outlet, and the first regulating valve is used to regulate the air pressure of the first air blowing element.

[0012] The first connection end of the second regulating valve is connected to the second air blowing element, and the second connection end of the second regulating valve is connected to the second air outlet. The second regulating valve is used to regulate the air pressure of the second air blowing element.

[0013] Preferably, the gas generator is used to generate a gas for the protective material, the gas being composed of one or more of nitrogen, argon, and carbon dioxide.

[0014] Preferably, the detection component includes a first control valve and a second detection element. The first control valve is installed on the storage tank, and the second detection element is connected to the air outlet of the storage tank. The second detection element is used to detect the oxygen concentration in the storage tank.

[0015] Preferably, the injection molding machine with gas protection device further includes a mounting frame and a connecting assembly. The mounting frame is used for mounting the injection assembly and the protective assembly. The first air blowing component is inserted into the mounting frame so that the first air blowing component faces the connection between the storage tank and the injection cylinder. The second air blowing component is mounted on the side of the mounting frame. The connecting assembly is used to connect the storage tank and the injection cylinder. The injection cylinder is used to transport the material from the storage tank from the nozzle to the mold cavity.

[0016] Preferably, the connecting assembly includes a second control valve, a third control valve, and a connecting cylinder. The second control valve is connected to the outlet of the storage tank and is used to control the opening or closing of the storage tank. The second control valve is connected to the third control valve and the third control valve is connected to the connecting cylinder. The connecting cylinder is connected to the inlet of the injection cylinder and the third control valve is used to control whether the material in the storage tank enters the injection cylinder.

[0017] Preferably, the injection cylinder includes a cylinder body and a screw, the connecting cylinder is inserted into the cylinder body, the cylinder body and the connecting cylinder are connected to facilitate the material in the storage tank to enter the cylinder body, and the cylinder body is connected to the first air blowing component to facilitate the gas to be blown into the screw to realize the protective material;

[0018] The screw is installed inside the cavity of the cylinder. The screw is used to push the material so that the material is injected into the mold cavity from the nozzle. The nozzle is provided with a fourth control valve, which is used to control the opening or closing of the nozzle.

[0019] This invention provides an injection molding machine with a gas protection device. The machine includes a material storage tank and an injection cylinder that injects material from a nozzle into the mold cavity for molding. A detection component is included to monitor the oxygen concentration in the material storage tank, preventing excessive oxygen concentration from causing material oxidation and affecting the final product molding. A protective component is located outside the injection cylinder. A first air blower in the protective component blows gas towards the material outlet of the storage tank to protect the material at the outlet. A second air blower blows gas towards the nozzle of the injection cylinder to protect the material ejected from the nozzle and prevent leakage. The detection component monitors the oxygen concentration in the storage tank to prevent oxidation caused by excessive oxygen. The first air blower protects the material at the outlet from oxidation, and the second air blower protects the material during injection through the nozzle, preventing oxidation from contact with air and preventing leakage that could affect the final product molding. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of an injection molding machine with a gas protection device provided for an embodiment of this utility model;

[0021] Figure 2 A cross-sectional view of an injection molding machine with a gas protection device provided for an embodiment of this utility model.

[0022] In the attached diagram: 1. Injection assembly; 11. Storage tank; 12. Injection cylinder; 121. Nozzle; 122. Fourth control valve; 123. Screw; 124. Cylinder; 2. Detection assembly; 21. First control valve; 22. Second detection element; 3. Protective assembly; 31. First air blowing element; 32. Second air blowing element; 33. Air valve; 34. First regulating valve; 35. Second regulating valve; 4. Mounting bracket; 5. Connecting assembly; 51. Second control valve; 52. Third control valve; 53. Connecting cylinder. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] like Figure 1 The diagram shown is a structural diagram of an injection molding machine with a gas protection device provided in an embodiment of the present invention. It includes: an injection assembly 1, which includes a storage tank 11 and an injection cylinder 12. The injection assembly 1 is used to inject the material in the storage tank 11 into the mold cavity through the nozzle 121 of the injection cylinder 12.

[0026] Detection component 2, which is connected to storage tank 11, is used to detect the oxygen concentration in storage tank 11;

[0027] The protective component 3 is located outside the injection cylinder 12. The protective component 3 is used to provide gas protection for the material. The protective component 3 includes a first air blowing element 31 and a second air blowing element 32. The first air blowing element 31 faces the discharge port of the storage tank 11 to protect the material conveyed from the storage tank 11 to the injection cylinder 12. The second air blowing element 32 faces the nozzle 121 of the injection cylinder 12 to protect the material injected into the mold cavity by the nozzle 121.

[0028] In this embodiment of the present invention, preferably, the injection molding machine with a gas protection device is mainly used for injecting material into the mold cavity through the injection cylinder 12 so that the material is formed in the mold. The injection molding machine with a gas protection device mainly includes an injection assembly 1, a detection assembly 2, and a protection assembly 3. The injection assembly 1 includes a storage tank 11 and an injection cylinder 12. The storage tank 11 is used to store material, and the discharge port of the storage tank 11 is connected to the injection cylinder 12 to facilitate the material being transported into the injection cylinder 12 so that the injection cylinder 12 pushes the material and ejects it from the nozzle 121 so that the material enters the mold cavity. The detection assembly 2 is connected to the storage tank 11 and is used to detect the oxygen concentration in the storage tank 11 to prevent the material from oxidizing due to excessive oxygen concentration in the storage tank 11. The storage tank 11 and the detection assembly 2 can be located above the injection cylinder 12 and the protection assembly 3. The protection assembly 3 is located outside the injection cylinder 12 and is mainly used for... The gas protection device provides gas protection for the material during the injection molding process, preventing oxidation and affecting the product molding effect. The protection component 3 includes a first air blowing component 31 and a second air blowing component 32. The first air blowing component 31 can be directed towards the connection between the material outlet of the storage tank 11 and the injection barrel 12, so that the blown gas can protect the material delivered from the material outlet to the injection barrel 12 from oxidation due to contact with air. The second air blowing component 32 can be directed towards the nozzle 121 connected to the injection barrel 12, so that the blown gas can protect the material ejected from the nozzle 121 and prevent material leakage at the nozzle 121. The material is stored in a vacuum storage tank 11. The detection component 2 detects the internal oxygen concentration in real time. The protection component 3 sprays gas at the material outlet of the storage tank 11 and when the material is ejected from the nozzle 121 to protect the material, preventing oxidation of the material before entering the mold cavity and affecting its molding effect, thereby improving the product molding yield.

[0029] In one embodiment of this invention, a material storage tank 11 is provided for storing materials, and an injection cylinder 12 is used to inject materials from a nozzle 121 into the mold cavity so that the materials are formed within the mold cavity. A detection component 2 is provided to detect the oxygen concentration in the material storage tank 11 in the injection assembly 1, so as to prevent the oxygen concentration in the material storage tank 11 from being too high, which would cause the material to oxidize and affect the product's post-molding effect. A protective component 3 is provided on the outside of the injection cylinder 12. The gas blown by the first air blowing element 31 in the protective component 3 is directed towards the material outlet of the material storage tank 11 to protect the material at the material outlet. The gas blown by the second air blowing element 31 is directed towards the material outlet of the material storage tank 11 to protect the material at the material outlet. The gas blown out by the gas component 32 is directed toward the nozzle 121 of the injection cylinder 12 to protect the material sprayed at the nozzle 121 and prevent material leakage from the nozzle 121. The oxygen concentration in the storage tank 11 is detected by the detection component 2 to prevent the oxygen concentration in the storage tank 11 from being too high and causing material oxidation. The gas blown out by the first gas component 31 is used to protect the material at the discharge port to prevent material oxidation. When the material is injected into the injection cylinder 12 and injected through the nozzle 121, the gas blown out by the second gas component 32 is used to protect the material to prevent the material from contacting the air and causing oxidation, and to prevent material leakage from affecting the product molding effect.

[0030] like Figures 1-2 As shown, in a preferred embodiment of the present invention, the protective component 3 further includes an air valve 33, multiple air pipes and a first detection element. The air valve 33 is used to control the gas to be diverted to the first air blowing element 31 and the second air blowing element 32. The air valve 33 is provided with an air inlet and multiple air outlets. The air inlet is connected to a gas generator, and each of the air outlets is connected to an air pipe.

[0031] The first air blowing component 31, the second air blowing component 32, and the first detection component are each connected to an air pipe. The first detection component is used to detect the air pressure of the gas generator.

[0032] In this embodiment of the present invention, preferably, the protective component 3 further includes an air valve 33, multiple air pipes, and a first detection element. The air valve 33 is used to guide the gas generated by the gas generator from the air inlet through multiple air outlets and air pipes and to the first blowing element 31 and the second blowing element 32. The air valve 33 can be a magnetically controlled four-way air valve 33. The first detection element connected to any air outlet can be a gas pressure detection switch. The first detection element is used to detect the pressure of the gas being blown out and to detect whether the pressure of the gas blown out by the gas generator meets the usage requirements.

[0033] like Figures 1-2As shown, in a preferred embodiment of the present invention, the protective component 3 further includes a first regulating valve 34 and a second regulating valve 35. The first connecting end of the first regulating valve 34 is connected to the first air blowing element 31, and the second connecting end of the regulating valve is connected to the first air outlet. The first regulating valve 34 is used to regulate the air pressure of the first air blowing element 31.

[0034] The first connection end of the second regulating valve 35 is connected to the second air blowing element 32, and the second connection end of the second regulating valve is connected to the second air outlet. The second regulating valve 35 is used to regulate the air pressure of the second air blowing element 32.

[0035] In this embodiment of the present invention, preferably, the protective component 3 further includes a first regulating valve 34 and a second regulating valve 35. The first regulating valve 34 is installed between the first air blowing element 31 and any air outlet. The first regulating valve 34 can adjust the gas pressure of the first air blowing element 31. The first regulating valve 34 is provided with a first connection end to the first air blowing element 31 and a second connection end to the air outlet. The first regulating valve 34 can adjust the pressure of the gas blown out from the first air blowing element 31 by rotating the knob. The second regulating valve 35 operates on the same principle as the first regulating valve 34, thereby adjusting the pressure of the gas blown out by the second air blowing element 32.

[0036] like Figures 1-2 As shown in the preferred embodiment of this utility model, the gas generator is used to generate gas for protective materials, and the gas is composed of one or more of nitrogen, argon, and carbon dioxide.

[0037] In this embodiment of the present invention, preferably, the gas generator connected to the gas valve 33 is a device mainly used to generate the required gas and is connected to the gas valve 33 so as to divert the gas to the first blowing element 31 and the second blowing element 32. The generated gas can be an inert gas such as nitrogen or argon or a low-activity gas so as to isolate the material from contact with oxygen in the air and avoid material oxidation that would affect the product molding effect. The type of gas selected is related to its characteristics and the material, and can be selected according to the usage requirements.

[0038] like Figures 1-2 As shown, in a preferred embodiment of the present invention, the detection component 2 includes a first control valve 21 and a second detection element 22. The first control valve 21 is installed on the storage tank 11, and the second detection element 22 is connected to the air outlet of the storage tank 11. The second detection element 22 is used to detect the concentration of oxygen in the storage tank 11.

[0039] In this embodiment of the present invention, preferably, the detection component 2 connected to the storage tank 11 mainly includes a first control valve 21 and a second detection element 22. The vacuum storage tank 11 can keep the internal material in a low-oxygen state. The first control valve 21 can keep the storage tank 11 in a vacuum and low-oxygen state. The air outlet on the storage tank 11 can be located on the side of the storage tank 11 and connected to the second detection element 22. The second detection element 22 is used to detect the oxygen concentration in the storage tank 11. The second detection element 22 can be an oxygen concentration detection alarm to detect whether the oxygen concentration meets the usage requirements, so as to avoid the oxidized material being injected into the mold cavity and affecting the product molding effect.

[0040] like Figures 1-2 As shown in the preferred embodiment of the present invention, the injection molding machine with gas protection device further includes a mounting frame 4 and a connecting assembly 5. The mounting frame 4 is used for mounting the injection assembly 1 and the protective assembly 3. The first air blowing component 31 is inserted into the mounting frame 4 so that the first air blowing component 31 faces the connection between the storage tank 11 and the injection cylinder 12. The second air blowing component 32 is mounted on the side of the mounting frame 4. The connecting assembly 5 is used to connect the storage tank 11 and the injection cylinder 12. The injection cylinder 12 is used to transport the material from the storage tank 11 from the nozzle 121 into the mold cavity.

[0041] In this embodiment of the present invention, preferably, the injection assembly 1 further includes a mounting frame 4 and a connecting assembly 5. The mounting frame 4 can be used to install the injection assembly 1 and the protective assembly 3. The mounting frame 4 is provided with a mounting plate for installing the protective assembly 3. The first air blowing element 31 is inserted into the bottom surface of the mounting frame 4 so as to blow gas toward the connection between the injection cylinder 12 and the discharge port of the storage tank 11. The air valve 33, the first regulating valve 34 and the second regulating valve 35 can be mounted on the mounting plate. The second air blowing element 32 is mounted on the mounting frame 4 through a long air pipe and arranged in parallel with the nozzle 121 so that the gas blown by the second air blowing element 32 is blown toward the nozzle 121.

[0042] like Figures 1-2 As shown, in a preferred embodiment of this utility model, the connecting assembly 5 includes a second control valve 51, a third control valve 52, and a connecting cylinder 53. The second control valve 51 is connected to the outlet of the storage tank 11 and is used to control the opening or closing of the storage tank 11. The second control valve 51 is connected to the third control valve 52, and the third control valve 52 is connected to the connecting cylinder 53. The connecting cylinder 53 is connected to the inlet of the injection cylinder 12, and the third control valve 52 is used to control whether the material in the storage tank 11 enters the injection cylinder 12.

[0043] In this embodiment of the present invention, preferably, the connecting assembly 5 for connecting the storage tank 11 and the injection cylinder 12 may include a second control valve 51, a third control valve 52, and a connecting cylinder 53. The second control valve 51 is connected to the outlet of the storage tank 11 to control the opening and closing of the outlet of the storage tank 11. The second control valve 51 is connected to the third control valve 52 through a quick-release chuck. The quick-release chuck is used to facilitate the replacement of the storage tank 11 and the material. During replacement, the second control valve 51 closes the storage tank 11, and the third control valve 52 closes the connecting cylinder 53 to prevent the material from contacting air and causing oxidation. The second control valve 51 and the third control valve 52 may be butterfly valves. During the material replacement process, the butterfly valve is closed to prevent the material from contacting air. The connecting cylinder 53 connected to the third control valve 52 may be inserted into the inlet of the injection cylinder 12 to facilitate the delivery of material. The connecting cylinder 53 may be a funnel structure to facilitate the control of the material flow direction.

[0044] like Figures 1-2 As shown, in a preferred embodiment of the present invention, the injection cylinder 12 includes a cylinder body 124 and a screw 123. The connecting cylinder 53 is inserted into the cylinder body 124. The cylinder body 124 is connected to the connecting cylinder 53 so that the material in the storage tank 11 can enter the cylinder body 124. The cylinder body 124 is connected to the first air blowing element 31 so that gas can be blown into the screw 123 to realize the protective material.

[0045] The screw 123 is installed in the cavity inside the cylinder 124. The screw 123 is used to push the material so that the material is injected into the mold cavity from the nozzle 121. The nozzle 121 is provided with a fourth control valve 122, which is used to control the nozzle 121 to open or close.

[0046] In this embodiment of the present invention, preferably, the injection cylinder 12 mounted on the mounting frame 4 mainly includes a cylinder body 124 and a screw 123. The cylinder body 124 is mounted on the mounting frame 4 and is provided with a feed port connected to the connecting cylinder 53. A through hole for positioning the first air blowing element 31 is provided on the wall opposite to the feed port. The screw 123 is located inside the cylinder body 124. The screw 123 rotates to drive the material forward so that the material is ejected from the nozzle 121 and enters the mold cavity. The second air blowing element 32 is mounted on the outside of the nozzle 121 and the blowing direction is towards the direction of the nozzle 121 to protect the material. A fourth control valve 122 is also provided on the outside of the nozzle 121. The fourth control valve 122 is used to control the opening and closing of the nozzle 121. The nozzle 121 is opened when the material is ejected from the nozzle 121 and closed at other times to ensure that the material does not overflow from the nozzle 121.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An injection molding machine with a gas protection device, characterized in that, The injection molding machine equipped with a gas protection device includes: An injection assembly, comprising a storage tank and an injection cylinder, wherein the injection assembly is used to inject material from the storage tank into the mold cavity through the nozzle of the injection cylinder; A detection component, connected to a storage tank, is used to detect the oxygen concentration in the storage tank; A protective assembly located outside the injection barrel is used to provide gas protection for the material. The protective assembly includes a first air blower and a second air blower. The first air blower faces the discharge port of the storage tank to protect the material being conveyed from the storage tank to the injection barrel, and the second air blower faces the nozzle of the injection barrel to protect the material injected into the mold cavity by the nozzle.

2. The injection molding machine with a gas protection device according to claim 1, characterized in that, The protective assembly also includes an air valve, multiple air pipes, and a first detection element. The air valve is used to control the gas flow to the first air blowing element and the second air blowing element. The air valve is provided with an air inlet and multiple air outlets. The air inlet is connected to a gas generator, and each of the air outlets is connected to an air pipe. The first air blowing component, the second air blowing component, and the first detection component are each connected to an air pipe. The first detection component is used to detect the air pressure of the gas generator.

3. The injection molding machine with a gas protection device according to claim 2, characterized in that, The protective assembly further includes a first regulating valve and a second regulating valve. The first connecting end of the first regulating valve is connected to the first air blowing element, and the second connecting end of the first regulating valve is connected to the first air outlet. The first regulating valve is used to regulate the air pressure of the first air blowing element. The first connection end of the second regulating valve is connected to the second air blowing element, and the second connection end of the second regulating valve is connected to the second air outlet. The second regulating valve is used to regulate the air pressure of the second air blowing element.

4. The injection molding machine with a gas protection device according to claim 2, characterized in that, The gas generator is used to generate a gas for the protective material, the gas being composed of one or more of nitrogen, argon, and carbon dioxide.

5. The injection molding machine with a gas protection device according to claim 1, characterized in that, The detection assembly includes a first control valve and a second detection element. The first control valve is installed on the storage tank, and the second detection element is connected to the air outlet of the storage tank. The second detection element is used to detect the oxygen concentration in the storage tank.

6. The injection molding machine with a gas protection device according to claim 2, characterized in that, The injection molding machine with gas protection device also includes a mounting frame and a connecting assembly. The mounting frame is used for mounting the injection assembly and the protective assembly. The first air blowing component is inserted into the mounting frame so that the first air blowing component faces the connection between the storage tank and the injection cylinder. The second air blowing component is mounted on the side of the mounting frame. The connecting assembly is used to connect the storage tank and the injection cylinder. The injection cylinder is used to transport the material from the storage tank from the nozzle to the mold cavity.

7. The injection molding machine with a gas protection device according to claim 6, characterized in that, The connecting assembly includes a second control valve, a third control valve, and a connecting cylinder. The second control valve is connected to the outlet of the storage tank and is used to control the opening or closing of the storage tank. The second control valve is connected to the third control valve, and the third control valve is connected to the connecting cylinder. The connecting cylinder is connected to the inlet of the injection cylinder, and the third control valve is used to control whether the material in the storage tank enters the injection cylinder.

8. The injection molding machine with a gas protection device according to claim 7, characterized in that, The injection cylinder includes a cylinder body and a screw rod. The connecting cylinder is inserted into the cylinder body. The cylinder body and the connecting cylinder are connected to facilitate the entry of material from the storage tank into the cylinder body. The cylinder body is connected to the first air blowing component so that gas can be blown into the screw rod to provide protective material. The screw is installed inside the cavity of the cylinder. The screw is used to push the material so that the material is injected into the mold cavity from the nozzle. The nozzle is provided with a fourth control valve, which is used to control the opening or closing of the nozzle.

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