Exhaust structure, exhaust method and plastic package mold for injection molding of super-thick product

Abstract

The invention relates to an exhaust structure for injection molding of a super-thick product, which is suitable for a super-thick plastic package product and comprises a demolding groove, at least one deep exhaust groove and at least one shallow exhaust groove, the demolding groove is used for ensuring that an injection-molded product can be smoothly taken out of the mold; the depth of the deep exhaust grooves is larger than that of the shallow exhaust grooves. The deep exhaust grooves are used for enabling a large amount of gas to enter and be exhausted in the injection molding process. The shallow exhaust groove serves as a supplementary structure behind the deep exhaust groove and is used for further exhausting residual gas. According to the exhaust structure, through the synergistic effect of the deep exhaust grooves and the shallow exhaust grooves, gas in the super-thick product is effectively exhausted, and the quality of the product is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of plastic packaging molds, and in particular to an exhaust structure, an exhaust method and a plastic packaging mold for injection molding of ultra-thick products. Background Art

[0002] With the development of injection molding technology, injection molding processes for various materials and product thicknesses have emerged. The characteristic of this technology is that it can achieve precise manufacturing of complex-shaped products by controlling parameters such as injection pressure, speed and mold temperature, which has led to injection molding methods and devices designed specifically for products of different thicknesses.

[0003] In related technologies, in order to deal with the internal air holes generated during the injection molding process, an exhaust system is usually considered in the mold design, such as setting an exhaust hole at the end of the product so that the gas can be discharged smoothly during the injection molding process. Especially for the injection molding process using epoxy molding compound (EMC), a reasonable exhaust design is the key to ensuring product quality.

[0004] However, the above exhaust method or related device has obvious problems when processing ultra-thick products. Due to the large thickness of the product, the gas generated inside the injection molding process is difficult to be discharged through the end exhaust hole in time, resulting in the formation of pores inside the product, affecting the overall quality and performance of the product. Summary of the invention

[0005] Based on this, it is necessary to provide an exhaust structure, exhaust method and plastic sealing mold for the injection molding of ultra-thick products to address the above problems, so as to effectively exhaust the gas inside the ultra-thick products and ensure the quality of the products.

[0006] A venting structure for injection molding of ultra-thick products, suitable for ultra-thick plastic-sealed products, comprising a demoulding groove, at least one deep venting groove and at least one shallow venting groove;

[0007] The demoulding groove is used to ensure that the injection molded product can be smoothly removed from the mold;

[0008] The depth of the deep exhaust groove is greater than the depth of the shallow exhaust groove;

[0009] The deep exhaust groove is used to allow a large amount of gas to enter and exhaust during the injection molding process;

[0010] The shallow exhaust groove serves as a supplementary structure behind the deep exhaust groove and is used to further exhaust residual gas.

[0011] In one embodiment, the deep exhaust groove and the shallow exhaust groove cooperate with each other to form a trend in which the overall depth of the exhaust groove decreases from deep to shallow.

[0012] In one embodiment, the deep exhaust groove and the shallow exhaust groove are sequentially arranged on the exhaust side of the plastic packaging mold;

[0013] During the injection molding process, the gas first enters the deep exhaust groove and is discharged, and the residual gas enters the shallow exhaust groove and is discharged, so that the gas in the injection molding is completely discharged.

[0014] In one embodiment, at least one sensor is integrated at the starting end, middle part and / or end part of the exhaust groove, and the sensor is used to monitor the gas pressure, temperature and flow rate in the exhaust groove in real time and transmit the data to the control system.

[0015] In one embodiment, the sensor is integrated with a control system of the mold, and the control system adjusts injection molding parameters according to the sensor data.

[0016] In one embodiment, the exhaust groove is arranged on the parting surface of the mold.

[0017] In one of the embodiments, a valve body for controlling the opening of the exhaust groove is provided at the outlet position of the exhaust groove end, and the valve body is used to control the opening size of the exhaust groove at the exhaust end to meet different exhaust requirements.

[0018] The invention discloses a venting method for injection molding of ultra-thick products, which uses a venting structure to vent during the injection molding process.

[0019] In one embodiment, the injection molding process is:

[0020] Mould preparation: an exhaust groove is provided on the exhaust side of the mould, and the exhaust groove includes at least one deep exhaust groove and at least one shallow exhaust groove, and the exhaust groove is generally from deep to shallow; the gas exhaust demand during the injection molding process is obtained according to the thickness of the injection moulded product, and the valve body opening at the outlet position at the end of the exhaust groove is adjusted to meet the exhaust demand;

[0021] Injection molding parameter setting: according to the material and thickness characteristics of the injection molding product, set the corresponding injection molding parameters in the control system;

[0022] Real-time monitoring and adjustment: During the injection molding process, the gas state in the deep exhaust groove and the shallow exhaust groove is monitored in real time through sensors, and the injection molding parameters are adjusted according to the sensor data to optimize the gas exhaust effect;

[0023] Product molding and removal: After injection molding is completed, wait for the mold to cool to an appropriate temperature, open the mold and take out the molded product.

[0024] A plastic encapsulation mold for injection molding of ultra-thick products, wherein a deep exhaust groove and a shallow exhaust groove are sequentially opened on the exhaust side of the plastic encapsulation mold.

[0025] The exhaust structure, exhaust method and plastic packaging mold used for injection molding of ultra-thick products can more thoroughly exhaust residual gas through the design of shallow exhaust grooves with deep exhaust grooves. The existence of shallow exhaust grooves ensures that even if the deep exhaust grooves cannot completely exhaust the gas, it can also be effectively removed in the subsequent process, thereby further improving the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the injection molding process provided in one embodiment of the present application.

[0027] Figure 2 This is a schematic diagram of the exhaust structure provided in one embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1. Demolding groove; 2. First exhaust groove; 3. Second exhaust groove. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is 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, and does not indicate or imply 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 a limitation on the present application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0036] See also Figure 1 , Figure 1 A schematic diagram of the injection molding process of an ultra-thick product in one embodiment of the present application is shown.

[0037] Combination Figure 2 As shown, Figure 2 A schematic diagram of the exhaust structure in an embodiment of the present application is shown.

[0038] In some embodiments, an exhaust structure for injection molding of ultra-thick products provided in an embodiment of the present application includes a demolding groove 1, at least one deep exhaust groove and at least one shallow exhaust groove; wherein the deep exhaust groove is the first exhaust groove 2, and the shallow exhaust groove is the second exhaust groove 3.

[0039] In some embodiments, the demolding groove 1 is arranged on the parting surface of the mold, and its function is to ensure that the injection molded product can be smoothly removed from the mold; in actual work, the design of the demolding groove 1 is usually customized according to the shape and size of the product to ensure that the adhesion between the mold and the product is minimized during the injection molding process, thereby facilitating the removal of the product.

[0040] In some embodiments, the depth of the first exhaust groove 2 is greater than the depth of the second exhaust groove 3, and its function is to allow a large amount of gas to enter and be discharged during the injection molding process. Since ultra-thick products will produce more gas during the injection molding process, the structural design of the deep exhaust groove can effectively accommodate and discharge the gas.

[0041] In some embodiments, the second exhaust groove 3 serves as a supplementary structure behind the first exhaust groove 2 to further exhaust residual gas; the design of the shallow exhaust groove 3 helps to ensure that even if the deep exhaust groove 2 fails to completely exhaust the gas, it can also be effectively removed in the subsequent process.

[0042] The first exhaust groove 2 and the second exhaust groove 3 work together in the exhaust process, forming a trend of the exhaust groove from deep to shallow. This combination of deep and shallow exhaust groove design allows the gas to be discharged more thoroughly, thereby further improving the quality of the product.

[0043] In a specific embodiment, taking the injection molding of 20C (um) EMC as an example, the depth of the first exhaust groove 2 is designed to be 100um, which is convenient for a large amount of gas to enter the groove body and be discharged. The depth of the second exhaust groove 3 is designed to be 10-12um, which can further discharge the residual gas. This solution is combined with the injection molding parameters to effectively discharge the gas inside the ultra-thick product.

[0044] In some embodiments, at least one sensor is integrated at the starting end, middle and / or end of the exhaust groove for real-time monitoring of the gas pressure, temperature and flow rate in the exhaust groove; the sensor is integrated with the control system of the mold, so that the control system can automatically adjust the injection molding parameters according to the sensor data, such as injection speed, pressure and mold temperature, etc. This adjustment method helps to optimize the gas exhaust effect and improve product quality and production efficiency.

[0045] In some embodiments, valve bodies (not shown in the figure) for controlling the opening of the groove bodies are provided at the end outlet positions of the first exhaust groove 2 and the second exhaust groove 3. The function of the valve body is to control the opening size of the exhaust groove at the exhaust end to adapt to different exhaust requirements; by adjusting the opening of the valve body, the gas exhaust effect can be further optimized to ensure that the gas in the injection molding process can be discharged smoothly without causing overflow or blockage.

[0046] In some embodiments, the present application provides a venting method for injection molding of ultra-thick products, the process of which is as follows:

[0047] First, the mold is prepared; exhaust grooves are opened on the exhaust side of the mold, including at least one first exhaust groove 2 (deep exhaust groove) and at least one second exhaust groove 3 (shallow exhaust groove); at the same time, the gas exhaust demand during the injection molding process is obtained according to the thickness of the injection molded product, and the valve body opening at the outlet position of the exhaust groove end is pre-adjusted to meet the exhaust demand;

[0048] Next, set the injection molding parameters; according to the material and thickness characteristics of the injection molding product, set the corresponding injection molding parameters in the control system, such as injection speed, pressure and mold temperature. The setting of these parameters should be based on the previous experimental data and process requirements to ensure the best injection molding effect and product quality;

[0049] Then, real-time monitoring and adjustment; during the injection molding process, sensors are used to monitor the gas status in the deep exhaust groove and the shallow exhaust groove in real time, including key parameters such as gas pressure, temperature and flow rate; based on the sensor data, the control system adjusts the injection molding parameters to optimize the gas exhaust effect; real-time monitoring and adjustment methods help ensure that the gas in the injection molding process can be discharged smoothly, thereby improving product quality and production efficiency;

[0050] Finally, the product is formed and taken out; after the injection molding is completed, wait for the mold to cool to the appropriate temperature, open the mold and take out the molded product. Before taking out the product, make sure that the gas in the mold has been completely discharged to avoid damage to the product or affect the product quality.

[0051] In some embodiments, the present application provides a plastic encapsulation mold for injection molding of ultra-thick products, and the plastic encapsulation mold is provided with a first exhaust groove 2 (deep exhaust groove) and a second exhaust groove 3 (shallow exhaust groove) on the exhaust side in sequence; through the synergistic effect of the first exhaust groove 2 and the second exhaust groove 3, the mold can effectively exhaust gas during the injection molding process, thereby ensuring the quality of the product.

[0052] The present application adopts a design of deep and shallow exhaust grooves to discharge residual gas more thoroughly. The existence of the shallow exhaust grooves ensures that even if the deep exhaust grooves fail to completely discharge the gas, it can be effectively removed in the subsequent process, thereby further improving the quality of the product.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A venting structure for injection molding of ultra-thick products, suitable for ultra-thick plastic-sealed products, characterized in that: including a demoulding groove, at least one deep venting groove and at least one shallow venting groove; The demoulding groove is used to ensure that the injection molded product can be smoothly removed from the mold; The depth of the deep exhaust groove is greater than the depth of the shallow exhaust groove; The deep exhaust groove is used to allow a large amount of gas to enter and exhaust during the injection molding process; The shallow exhaust groove serves as a supplementary structure behind the deep exhaust groove and is used to further exhaust residual gas.

2. The exhaust structure for injection molding of ultra-thick products according to claim 1, characterized in that: The deep exhaust groove and the shallow exhaust groove cooperate with each other to form a trend that the overall depth of the exhaust groove decreases from deep to shallow.

3. The exhaust structure for injection molding of ultra-thick products according to claim 2, characterized in that: The deep exhaust groove and the shallow exhaust groove are sequentially arranged on the exhaust side of the plastic packaging mold; During the injection molding process, the gas first enters the deep exhaust groove and is discharged, and the residual gas enters the shallow exhaust groove and is discharged, so that the gas in the injection molding is completely discharged.

4. The exhaust structure for injection molding of ultra-thick products according to claim 1, characterized in that: At least one sensor is integrated at the starting end, the middle part and / or the end part of the exhaust groove, and the sensor is used to monitor the gas pressure, temperature and flow rate in the exhaust groove in real time and transmit the data to the control system.

5. The exhaust structure for injection molding of ultra-thick products according to claim 4, characterized in that: The sensor is integrated with the control system of the mold, and the control system adjusts the injection molding parameters according to the sensor data.

6. The exhaust structure for injection molding of ultra-thick products according to claim 1, characterized in that: The exhaust groove is arranged on the parting surface of the mold.

7. The exhaust structure for injection molding of ultra-thick products according to claim 1, characterized in that: A valve body for controlling the opening of the slot is arranged at the outlet position of the exhaust slot end, and the valve body is used to control the opening size of the exhaust slot at the exhaust end to meet different exhaust requirements.

8. A venting method for injection molding of ultra-thick products, characterized in that: The exhaust structure for injection molding of ultra-thick products as described in any one of claims 1 to 7 is used to perform exhaust during the injection molding process.

9. The exhaust method for ultra-thick product injection molding according to claim 8, characterized in that: The injection molding process is: Mould preparation: an exhaust groove is provided on the exhaust side of the mould, and the exhaust groove includes at least one deep exhaust groove and at least one shallow exhaust groove, and the exhaust groove is generally from deep to shallow; the gas exhaust demand during the injection molding process is obtained according to the thickness of the injection moulded product, and the valve body opening at the outlet position at the end of the exhaust groove is adjusted to meet the exhaust demand; Injection molding parameter setting: according to the material and thickness characteristics of the injection molding product, set the corresponding injection molding parameters in the control system; Real-time monitoring and adjustment: During the injection molding process, the gas state in the deep exhaust groove and the shallow exhaust groove is monitored in real time through sensors, and the injection molding parameters are adjusted according to the sensor data to optimize the gas exhaust effect; Product molding and removal: After injection molding is completed, wait for the mold to cool to an appropriate temperature, open the mold and take out the molded product.

10. A plastic encapsulation mold for injection molding of ultra-thick products, characterized in that: The deep exhaust groove and the shallow exhaust groove as described in any one of claims 1 to 7 are sequentially opened on the exhaust side of the plastic packaging mold.

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