A mold structure for a segmented high pressure injection process

Abstract

The present application relates to the field of mould equipment, more particularly to a segmented high-pressure injection process mould structure, comprising a mould upper cover and a mould base, the bottom surface of the mould upper cover is provided with a mould cavity and a glue overflow cavity, the mould cavity is located inside the glue overflow cavity, and the mould cavity and the glue overflow cavity are communicated through an openable or closable glue overflow channel; a mould body that can be matched with the mould cavity is arranged on the top surface of the mould base, and an injection cavity can be formed between the mould body and the mould cavity. The segmented high-pressure injection process mould structure of the present application is internally provided with a glue overflow channel that can be opened or closed through a channel control mechanism; when the pressure of the second segment is increased, the glue overflow channel is opened to communicate the injection cavity and the glue overflow cavity, the pressure in the injection cavity is reduced, and glue overflow is facilitated.

Description

Technical Field

[0001] This invention relates to the field of mold equipment, and more specifically, to a mold structure for a segmented high-pressure injection process. Background Technology

[0002] Fiber-reinforced composite materials are composite materials formed by winding, molding or pultrusion of reinforcing fiber materials, such as glass fiber, carbon fiber, aramid fiber and matrix material.

[0003] With the continuous development of fiber-reinforced composite material manufacturing processes, more and more composite material products are being used in aerospace, new energy vehicles, sporting goods, and other fields. SHP-RTM (Segmented High-Pressure Injection Transfer Molding), as a new generation of molding technology, places higher demands on mold design. It must meet both the sealing requirements during the first stage of pressure application and the overflow requirements during the second stage. However, traditional mold designs cannot meet the overflow requirements during the second stage of pressure application, thus failing to satisfy the process requirements. Therefore, a new mold design is needed to solve the molding problems of this process. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides a mold structure for a segmented high-pressure injection process, including a mold top cover and a mold base. The bottom surface of the mold top cover has a mold cavity and an overflow cavity. The mold cavity is located inside the overflow cavity, and the mold cavity and the overflow cavity are connected by an openable or closable overflow channel. The top surface of the mold base is equipped with a mold body that can cooperate with the mold cavity, and an injection cavity can be formed between the mold body and the mold cavity.

[0006] Optionally, the mold base is provided with two or more closed-loop sealing strip mounting grooves, and a sealing strip is provided in the sealing strip mounting groove.

[0007] Optionally, the mold cover has one or more vacuum ports for connection to a vacuum pump.

[0008] Optionally, the mold cover is provided with a glue injection port to inject glue into the glue injection cavity through the glue injection port.

[0009] Optionally, the overflow channel is open on one side near the bottom surface of the mold cover.

[0010] Optionally, the overflow channel is provided with an opening and closing channel that runs perpendicularly through the length of the overflow channel, and a channel control mechanism is connected in the opening and closing channel to control the opening or closing of the overflow channel.

[0011] Optionally, the first embodiment of the channel control mechanism is:

[0012] The channel control mechanism includes a hydraulic cylinder and a push rod. The fixed end of the hydraulic cylinder is fixed to the top surface of the mold cover, and the movable end of the hydraulic cylinder is connected to one end of the push rod. The other end of the push rod slides in a sealed manner within the opening and closing channel, so as to seal or release the sealing of the opening and closing channel under the control of the hydraulic cylinder.

[0013] Alternatively, a second embodiment of the channel control mechanism is:

[0014] The channel control mechanism includes a push rod assembly, a mounting base, a guide shaft, a slide tube assembly, a first compression spring, and a sealing tube assembly. The fixed end of the push rod assembly is fixed to the top surface of the mold cover, and the movable end of the push rod assembly is fixed to the mounting base. One end of the guide shaft is fixed on the mounting base, and the other end of the guide shaft is slidably fitted inside the slide tube assembly. The slide tube assembly is connected to the guide shaft through the first compression spring. The slide tube assembly is connected inside the sealing tube assembly, and the sealing tube assembly is slidably fitted in a sealing manner within the opening and closing channel.

[0015] Optionally, the slide tube assembly includes a slide tube body, one end of which is inserted into the sealing tube assembly and closed, and the other end of the slide tube body is provided with a slide track that slides with the guide shaft. A first compression spring is fixed between the guide shaft and the bottom surface of the slide track. The end of the slide tube body inserted into the sealing tube assembly is provided with an inclined pressure surface. A disc seat is fixed on the slide tube body, and one end of the sealing tube assembly is connected to the disc seat. A first polygonal rod is fixed on the disc seat, and the middle part of the first polygonal rod slides on the mounting seat. A first reinforcing compression spring is sleeved on the rod body of the first polygonal rod located between the disc seat and the mounting seat.

[0016] Optionally, the slide tube assembly further includes a second polygonal rod, the middle of which slides on the mounting base. A linkage plate is fixed to one end of the second polygonal rod near the disc seat. The linkage plate can fit into the slide groove of the disc seat. A second reinforcing spring is sleeved on the second polygonal rod. The two ends of the second reinforcing spring are fixedly connected to the linkage plate and the mounting base, respectively. A reinforcing connecting rod is threaded onto the linkage plate. The inner end of the reinforcing connecting rod can be inserted into the linkage hole of the disc seat. A limiting screw is fixed on the mounting base. The middle of the limiting screw slides in the longitudinal hole of the disc seat. An adjusting nut is threaded onto the limiting screw. The adjusting nut presses against the bottom surface of the disc seat.

[0017] Optionally, the plugging tube assembly includes a plugging tube body that slides and seals within the opening and closing channel, and a sliding tube body that slides and seals within the plugging tube body. One end of the plugging tube body away from the opening and closing channel rotates on a movable bracket, which is threaded onto a regulating screw. One end of the regulating screw is connected to the output shaft of a regulating motor, and the regulating motor is fixed on a disc base. A rotating tube slides on the regulating screw, and the inner side of the rotating tube has a protruding ridge that slides within the limiting groove of the regulating screw. A first gear is fixed on the rotating tube, and the first gear meshes with a second gear. The second gear is fixed on the plugging tube body, and both the rotating tube and the plugging tube body rotate on a linkage frame.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This invention provides a mold structure for a segmented high-pressure injection molding process, which can effectively meet the processing and usage requirements of the segmented high-pressure injection transfer molding process. It can satisfy both the sealing requirements during the first stage of pressure application and the overflow requirements during the second stage of pressure application in the segmented high-pressure injection transfer molding process. A glue injection cavity can be formed between the mold body and the mold cavity. During injection molding in the glue injection cavity, the vacuum degree and sealing performance of the glue injection cavity can be effectively guaranteed, thereby ensuring the overall sealing of the mold structure. The mold has an overflow channel inside that can be opened or closed by a channel control mechanism. When the press pressure is increased during the second stage of pressure application, opening the overflow channel can connect the glue injection cavity and the overflow cavity, reduce the pressure in the glue injection cavity, and facilitate glue overflow.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 Schematic diagram of the structure of the mold cover and mold base provided in the embodiment of the present invention. Figure 1 ;

[0023] Figure 2 Schematic diagram of the structure of the mold cover and mold base provided in the embodiment of the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of the mold cover provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the mold base provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the mold cover and channel control mechanism provided in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the channel control mechanism provided in an embodiment of the present invention;

[0028] Figure 7 A cross-sectional view of the channel control mechanism provided in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the slide tube assembly provided in an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the sealing tube assembly provided in an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of the slide tube body provided in an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the structure of the mounting base provided in an embodiment of the present invention.

[0033] Icons: Mold top cover 1; Mold cavity 101; Overflow cavity 102; Overflow channel 103; Vacuum port 104; Injection port 105; Opening and closing channel 106; Mold base 2; Channel control mechanism 3; Push rod assembly 4; Mounting seat 5; Guide shaft 6; Slide tube assembly 7; Slide tube body 701; Disc seat 702; First multi-faceted rod 703; First reinforcing spring 704; Second multi-faceted rod 705; Linkage plate 706; Second reinforcing spring 707; Reinforcing connecting rod 708; Limiting screw 709; Adjusting nut 710; First spring 8; Sealing tube assembly 9; Sealing tube body 901; Movable bracket 902; Adjusting screw 903; Adjusting motor 904; Rotating tube 905; First gear 906; Second gear 907; Linkage frame 908. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0036] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0037] The following is in conjunction with the appendix Figure 1-11 The present invention will be described in further detail below.

[0038] Example 1

[0039] like Figure 1-11 As shown, a mold structure for a segmented high-pressure injection process includes a mold cover 1 and a mold base 2. The bottom surface of the mold cover 1 has a mold cavity 101 and an overflow cavity 102. The mold cavity 101 is located inside the overflow cavity 102. The mold cavity 101 and the overflow cavity 102 are connected by an openable or closable overflow channel 103. The top surface of the mold base 2 is equipped with a mold body that can cooperate with the mold cavity 101. An injection cavity can be formed between the mold body and the mold cavity 101.

[0040] The working principle and beneficial effects of the above technical solution are as follows:

[0041] This invention provides a mold structure for a segmented high-pressure injection molding process. A mold cavity 101 and an overflow cavity 102 are formed on the bottom surface of the mold upper cover 1. A mold body that mates with the mold cavity 101 is mounted on the top surface of the mold base 2. When the mold upper cover 1 and mold base 2 are engaged by a press, an injection cavity for resin injection is formed between the mold body and the mold cavity 101. During injection molding, the vacuum and sealing within the injection cavity are effectively guaranteed, thus ensuring the overall sealing of the mold structure. This meets the sealing requirements during the first stage of pressure application in the segmented high-pressure injection transfer molding process. The mold cavity 101 and the overflow cavity 102 are connected by an openable or closable overflow channel 103. When the press pressure increases during the second stage of pressure application, opening the overflow channel connects the injection cavity and the overflow cavity, reducing the pressure within the injection cavity and facilitating overflow. This meets the overflow requirements during the second stage of pressure application in the segmented high-pressure injection transfer molding process, effectively satisfying the processing and usage requirements of the segmented high-pressure injection transfer molding process.

[0042] The mold base 2 is provided with two or more closed-loop sealing strip mounting grooves, and a sealing strip is provided in the sealing strip mounting groove.

[0043] The mold cover 1 has one or more vacuum ports 104 for connection to a vacuum pump.

[0044] The upper cover 1 of the mold is provided with a glue injection port 105 for injecting glue into the glue injection cavity through the glue injection port 105.

[0045] The overflow channel 103 is open on one side near the bottom surface of the mold cover 1.

[0046] The overflow channel 103 is provided with an opening and closing channel 106 that runs vertically through the length of the overflow channel 103. The opening and closing channel 106 is connected to a channel control mechanism 3, which controls the opening or closing of the overflow channel 103. When the press pressure is increased in the second stage of pressure application, the overflow channel 103 is opened to connect the injection chamber and the overflow chamber 102, thereby reducing the pressure in the injection chamber and facilitating the overflow of glue. This meets the overflow requirements of the segmented high-pressure injection transfer molding process during the second stage of pressure application and can effectively meet the processing and usage requirements of the segmented high-pressure injection transfer molding process.

[0047] The mold structure of this invention can effectively meet the requirements of segmented high-pressure injection molding process. The following are the specific steps for processing composite material products using segmented high-pressure injection molding process and this mold structure:

[0048] S1. Place the fiber-reinforced material into the mold base 2 in sequence;

[0049] S2. The upper cover 1 of the mold and the base 2 of the mold are closed by the press. At this time, the injection port 105 is closed, the overflow channel 103 is closed, and the vacuum port 104 is closed.

[0050] S3. After the mold top cover 1 and mold base 2 are closed in place (one stage of pressure application ends), the glue injection port 105 is closed, the glue overflow channel 103 is opened, and the vacuum extraction hole 4 is opened.

[0051] S4. After vacuuming for the set time, vacuum port 104 is closed and overflow channel 103 is closed.

[0052] S5. Begin injecting adhesive; open the adhesive injection port 105.

[0053] S6. Glue injection complete, glue injection port 105 closed;

[0054] S7. Prepare for the second stage of pressure application; open the overflow channel 103.

[0055] S8, press machine applies pressure in two stages;

[0056] S9. After the second stage of pressure application is completed, the overflow channel 103 is closed;

[0057] S10. After heat preservation and pressure curing for a set time, the product is demolded and post-processed to obtain the processed fiber-reinforced composite material product.

[0058] By adopting the mold structure of the present invention, it is possible to produce products with high fiber volume content, large batches, continuous production, and consistent product performance. The processed fiber-reinforced composite materials have higher fiber content, higher production efficiency, and higher product yield.

[0059] Example 2

[0060] like Figure 1-11 As shown, the channel control mechanism 3 includes a push rod assembly 4, a mounting base 5, a guide shaft 6, a slide tube assembly 7, a first compression spring 8, and a sealing tube assembly 9. The fixed end of the push rod assembly 4 is fixed to the top surface of the mold cover 1, and the movable end of the push rod assembly 4 is fixed to the mounting base 5. The guide shaft 6 is fixed on the mounting base 5, and the guide shaft 6 is slidably fitted inside the slide tube assembly 7. The slide tube assembly 7 is connected to the guide shaft 6 through the first compression spring 8. The slide tube assembly 7 is connected inside the sealing tube assembly 9, and the sealing tube assembly 9 slides and seals within the opening and closing channel 106.

[0061] The working principle and beneficial effects of the above technical solution are as follows:

[0062] This invention provides a mold structure for a segmented high-pressure injection process. The channel control mechanism 3 controls the opening and closing of the overflow channel 103. When the overflow channel 103 needs to be opened or closed, the push rod assembly 4 is electrically activated. The push rod assembly 4 can be an electric push rod or a hydraulic push rod. After activation, the push rod assembly 4 drives the receiving seat 5 to move. When the receiving seat 5 moves, it drives the sealing tube assembly 9 to slide within the opening / closing channel 106 through the cooperation of the guide shaft 6, the slide tube assembly 7, and the first compression spring 8, thereby opening or closing the opening / closing channel 106. When the opening / closing channel 106 needs to be partially opened, in addition to control via the push rod assembly 4, the sealing tube assembly 9 can be partially removed from the slide tube assembly 7, i.e., the sealing tube assembly 9 is controlled to move outwards, so that one end of the slide tube assembly 7 located within the opening / closing channel 106 is exposed. At this time, a channel for injecting and overflowing adhesive is formed between the opening / closing channel 106 and the slide tube assembly 7, meeting the usage requirements under different conditions. Multiple control modes are available to meet the usage requirements under different conditions.

[0063] Example 3

[0064] like Figure 1-11 As shown, the slide tube assembly 7 includes a slide tube body 701, which is inserted into and closed at one end of the sealing tube assembly 9. The other end of the slide tube body 701 is provided with a slide track that slides with the guide shaft 6. A first compression spring 8 is fixed between the guide shaft 6 and the bottom surface of the slide track. The end of the slide tube body 701 inserted into the sealing tube assembly 9 is provided with an inclined pressure surface. A disc seat 702 is fixed on the slide tube body 701, and one end of the sealing tube assembly 9 is connected to the disc seat 702. A first polygonal rod 703 is fixed on the disc seat 702. The middle part of the first polygonal rod 703 slides on the mounting seat 5. A first reinforcing compression spring 704 is sleeved on the rod body of the first polygonal rod 703 located between the disc seat 702 and the mounting seat 5.

[0065] The working principle and beneficial effects of the above technical solution are as follows:

[0066] This invention provides a mold structure for a segmented high-pressure injection process. The slide tube body 701, inserted into the sealing tube assembly 9, has a sloping pressure surface at one end. When the sealing tube assembly 9 is partially removed from the slide tube assembly 7, the end of the slide tube body 701 with the sloping pressure surface is exposed. At this time, an injection adhesive overflow channel can be formed, automatically adjusting the overflow outlet size according to the injection force. Specifically, the sloping pressure surface of the slide tube body 701 contacts the overflowing injection adhesive. The injection adhesive generates an outward pushing force on the sloping pressure surface of the slide tube body 701, causing the slide tube body 701 to exert pressure on the first compression spring 8, thereby sliding outward on the guide shaft 6, thus forming... Different sized overflow outlets: This structural design allows for the adjustment of the pressure exerted by the injected adhesive on the inclined pressure surface of the slide tube body 701 according to the pressure applied a second time by the press, automatically forming overflow outlets of different sizes. This ensures that excess adhesive overflows while preventing excessive adhesive overflow due to overly large overflow outlets. Furthermore, when the size of the overflow outlet is automatically changed by the pressure applied a second time by the press, the first compression spring 8 acts on the slide tube body 701 to limit the size of the overflow outlet. To a certain extent, this can cooperate with the press to achieve a bidirectional squeezing effect, improving the squeezing effect of the adhesive in the injection chamber and ultimately improving the quality of the processed products.

[0067] In addition, the first multi-faceted rod 703 is fitted with a first reinforcing spring 704 on the rod body between the disc seat 702 and the mounting seat 5, which can further increase the pressure required to adjust the size of the overflow port, and also help to improve the positional stability of the slide tube body 701 in the normal state, making it less prone to loosening.

[0068] Example 4

[0069] like Figure 1-11 As shown, the slide tube assembly 7 also includes a second polygonal rod 705, the middle of which slides on the mounting base 5. A linkage plate 706 is fixed to one end of the second polygonal rod 705 near the disc base 702. The linkage plate 706 can be fitted into the slide groove of the disc base 702. A second reinforcing spring 707 is sleeved on the second polygonal rod 705. The two ends of the second reinforcing spring 707 are fixedly connected to the linkage plate 706 and the mounting base 5, respectively. A reinforcing connecting rod 708 is threaded on the linkage plate 706. The inner end of the reinforcing connecting rod 708 can be inserted into the linkage hole of the disc base 702. A limiting screw 709 is fixed on the mounting base 5. The middle of the limiting screw 709 slides in the longitudinal hole of the disc base 702. An adjusting nut 710 is threaded on the limiting screw 709. The adjusting nut 710 presses against the bottom surface of the disc base 702.

[0070] The working principle and beneficial effects of the above technical solution are as follows:

[0071] This invention provides a mold structure for a segmented high-pressure injection process, which further includes a combination of a second multi-faceted rod 705, a linkage plate 706, a second reinforcing spring 707, and a reinforcing connecting rod 708. When a higher pressure is required to adjust the overflow outlet size, the reinforcing connecting rod 708 can be inserted into the linkage hole of the disc seat 702. At this time, the number of springs that drive the disc seat 702 to compress when the slide tube body 701 moves outward increases, requiring simultaneous compression of the first reinforcing spring 704 and the second reinforcing spring 707. This results in a higher required pressure, better meeting the needs of different situations. The number of connections of the combination of the second multi-faceted rod 705, linkage plate 706, second reinforcing spring 707, and reinforcing connecting rod 708 can be set according to actual needs to meet the requirements of different situations.

[0072] The mounting base 5 is also fixed with a limiting screw 709, and a regulating nut 710 is threaded onto the limiting screw 709. The regulating nut 710 presses against the bottom surface of the disc base 702. When there is no need to automatically adjust the size of the overflow port according to the pressure, rotating the regulating nut 710 changes the contact position between the regulating nut 710 and the disc base 5, so that the first reinforcing spring 704 and the second reinforcing spring 707 are fully compressed. At this time, the distance between the disc base 702 and the mounting base 5 reaches its minimum. At this time, the slide tube assembly 7 and the guide shaft 6 cannot move relative to each other, so that the present invention will not automatically adjust the size of the overflow port according to the pressure during use, so as to better meet the usage requirements of the present invention.

[0073] Example 5

[0074] like Figure 1-11 As shown, the plugging tube assembly 9 includes a plugging tube body 901 that slides within the opening / closing channel 106, and a sliding tube body 701 that slides within the plugging tube body 901. One end of the plugging tube body 901 away from the opening / closing channel 106 rotates on a movable bracket 902. The movable bracket 902 is threaded onto a regulating screw 903. One end of the regulating screw 903 is connected to the output shaft of a regulating motor 904, which is fixed on a disc seat 702. A rotating tube 905 slides on the regulating screw 903. The inner side of the rotating tube 905 has a protruding ridge that slides within a limiting groove of the regulating screw 903. A first gear 906 is fixed on the rotating tube 905, and the first gear 906 meshes with a second gear 907, which is fixed on the plugging tube body 901. Both the rotating tube 905 and the plugging tube body 901 rotate on a linkage frame 908.

[0075] The working principle and beneficial effects of the above technical solution are as follows:

[0076] This invention provides a mold structure for a segmented high-pressure injection process. The structural arrangement of the sealing tube assembly 9 increases the usability of the invention. The sealing tube assembly 9 facilitates the operation of the sleeve range of the slide tube body 701. When it is necessary to completely block the opening and closing channel 106, the sealing tube body 901 is completely sleeved outside the slide tube body 701. When it is necessary to partially open the opening and closing channel 106, the sealing tube body 901 is partially sleeved on the slide tube body 701. At this time, the regulating motor 904 is powered on and started. After the regulating motor 904 is started, it can drive the regulating screw 903 to rotate, thereby changing the contact position between the regulating screw 903 and the movable bracket 902, and then driving the relative movement between the movable bracket 902 and the disc seat 702, thereby controlling the sealing tube body 901 to slide on the slide tube body 701 and changing the range of sleeve on the slide tube body 701.

[0077] Furthermore, when the regulating motor 904 drives the regulating screw 903 to rotate, the regulating screw 903 can drive the rotating tube 905 to rotate through the cooperation of the protrusion and the limiting groove. When the rotating tube 905 rotates, it can drive the first gear 906 to rotate. The rotation of the first gear 906 meshes and drives the second gear 907 to rotate, thereby driving the sealing tube body 901 to rotate. This allows the sealing tube body 901 to rotate within the opening and closing channel 106, which can better remove the adhesive in the opening and closing channel 106 and improve the cleaning effect of the adhesive in the opening and closing channel 106.

[0078] The mold structure for a segmented high-pressure injection molding process of the present invention further includes:

[0079] A displacement sensor is fixed on the mold cover 1 to detect the total distance of the sliding motion of the sealing tube body 901 on the mold cover 1;

[0080] A temperature sensor is installed on the mold cover 1 to detect the actual temperature of the mold cover 1 when the sealing tube body 901 is in use;

[0081] A speed sensor is installed on the mold cover 1 to detect the rotational speed of the sealing tube body 901.

[0082] A pressure sensor is used to detect the pressure resistance experienced by the plugging tube body 901 as it slides within the opening and closing channel 106.

[0083] An alarm is installed on the mold cover 1;

[0084] The controller is installed on the mold cover 1 and is electrically connected to the displacement sensor, temperature sensor and alarm.

[0085] In this invention, the actual sealing performance of the sealing tube body 901 on the opening and closing channel 106 is crucial. The actual sealing performance of the sealing tube body 901 on the opening and closing channel 106 affects the sealing performance of the processed product, and ultimately the processing quality of the product. The actual sealing performance of the internal sealing tube body 901 on the opening and closing channel 106 can be calculated using the following formula:

[0086]

[0087] In the formula:

[0088] θ x This refers to the actual sealing performance of the sealing pipe body 901 on the opening and closing channel 106;

[0089] θ0 represents the preset sealing performance of the sealing tube body 901 on the opening and closing channel 106;

[0090] The total distance of sliding motion of the sealing tube body 901 on the mold cover 1, as detected by the displacement sensor;

[0091] P μ The maximum distance that the pre-set sealing tube body 901 slides on the mold cover 1;

[0092] The actual temperature of the mold cover 1 when the sealing tube body 901 is in use is detected by the temperature sensor.

[0093] The temperature of the mold cover 1 when the pre-set sealing tube body 901 is in use;

[0094] S f The actual pressure resistance experienced by the sealing tube body 901 as it slides within the opening and closing channel 106, as detected by the pressure sensor.

[0095] S i The pressure resistance experienced by the pre-set sealing tube body 901 when it slides within the opening and closing channel 106;

[0096] (Y r -πτ)÷l is the actual rotational speed of the sealing tube body 901 detected by the speed sensor;

[0097] R γ The preset rotational speed of the sealing tube body 901;

[0098] The material strength of the sealing pipe body 901.

[0099] The beneficial effects of the above formula are:

[0100] The above formula can effectively calculate the actual sealing performance of the sealing tube body 901 on the opening and closing channel 106. The calculation results are accurate and efficient, which helps to ensure the sealing performance of processed products, improve the quality of processed products, and ensure processing efficiency and effect. The above formula fully considers a variety of factors in actual use, including the total distance of the sliding movement of the sealing tube body 901 on the mold cover 1 detected by the displacement sensor. The larger this value is, the greater the actual wear value of the sealing tube body 901, and the worse the sealing effect produced by the sealing tube body 901. It also includes the actual temperature of the mold cover 1 detected by the temperature sensor when the sealing tube body 901 is in use. The higher the actual temperature, the greater the impact on the sealing tube body 901, the more easily the sealing tube body 901 is damaged, the lower the performance of the sealing tube body 901, and the shorter its lifespan. It also combines... The actual rotational speed of the sealing tube body 901, detected by the internal speed sensor of this invention, is higher. Although a higher actual rotational speed of the sealing tube body 901 results in a faster and more effective cleaning of the adhesive in the opening and closing channel 106, it also leads to greater wear and tear from the contact between the sealing tube body 901 and the inner wall of the opening and closing channel 106. This results in lower stability of the sealing tube body 901 and a lower actual sealing performance of the sealing tube body 901 in the opening and closing channel 106. After calculating the actual sealing performance of the sealing tube body 901 in the opening and closing channel 106, it is determined whether the actual sealing performance is within a preset sealing performance range. If the actual sealing performance is lower than the preset sealing performance range, the controller activates an alarm to prompt staff to perform timely inspection and maintenance, thus ensuring the sealing performance of this invention during product processing.

[0101] In the description of this invention, 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

[0102] In this invention, unless otherwise explicitly 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0103] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A mold structure for a segmented high-pressure injection molding process, characterized in that, The mold includes a mold top cover (1) and a mold base (2). The bottom surface of the mold top cover (1) is provided with a mold cavity (101) and an overflow cavity (102). The mold cavity (101) is located inside the overflow cavity (102). The mold cavity (101) and the overflow cavity (102) are connected by an overflow channel (103) that can be opened or closed. The top surface of the mold base (2) is provided with a mold body that can cooperate with the mold cavity (101). An injection cavity can be formed between the mold body and the mold cavity (101). The overflow channel (103) is provided with an opening and closing channel (106) that runs vertically through the length of the overflow channel (103). The opening and closing channel (106) is connected to a channel control mechanism (3) so as to control the opening or closing of the overflow channel (103) through the channel control mechanism (3). The channel control mechanism (3) includes a push rod assembly (4), a mounting base (5), a guide shaft (6), a slide tube assembly (7), a first compression spring (8), and a sealing tube assembly (9); the fixed end of the push rod assembly (4) is fixed on the top surface of the mold cover (1), the movable end of the push rod assembly (4) is fixed to the mounting base (5), the guide shaft (6) is fixed on the mounting base (5), the guide shaft (6) is slidably fitted inside the slide tube assembly (7), and the slide tube assembly (7) is connected to the guide shaft (6) through the first compression spring (8); the slide tube assembly (7) is connected inside the sealing tube assembly (9), and the sealing tube assembly (9) slides in a sealed manner within the opening and closing channel (106).

2. The mold structure for a segmented high-pressure injection molding process according to claim 1, characterized in that, The mold base (2) is provided with two or more closed-loop sealing strip mounting grooves, and a sealing strip is provided in the sealing strip mounting groove.

3. The mold structure for a segmented high-pressure injection molding process according to claim 1, characterized in that, The mold cover (1) has one or more vacuum ports (104) for connection to a vacuum pump.

4. The mold structure for a segmented high-pressure injection molding process according to claim 1, characterized in that, The mold cover (1) is provided with a glue injection port (105) for injecting glue into the glue injection cavity through the glue injection port (105).

5. The mold structure for a segmented high-pressure injection molding process according to claim 1, characterized in that, The overflow channel (103) is open on one side near the bottom of the mold cover (1).

6. The mold structure for a segmented high-pressure injection molding process according to claim 1, characterized in that, The slide tube assembly (7) includes a slide tube body (701), which is inserted into the sealing tube assembly (9) and closed at one end. The other end of the slide tube body (701) is provided with a slide rail that slides with the guide shaft (6). A first compression spring (8) is fixed between the guide shaft (6) and the bottom surface of the slide rail. The end of the slide tube body (701) inserted into the sealing tube assembly (9) is provided with an inclined pressure surface. A disc seat (702) is fixed on the slide tube body (701), and one end of the sealing tube assembly (9) is connected to the disc seat (702). A first polygonal rod (703) is fixed on the disc seat (702). The middle part of the first polygonal rod (703) slides on the mounting seat (5). A first reinforcing compression spring (704) is sleeved on the rod between the disc seat (702) and the mounting seat (5).

7. The mold structure for a segmented high-pressure injection molding process according to claim 6, characterized in that, The slide tube assembly (7) also includes a second polygonal rod (705), the middle part of which slides on the mounting base (5). A linkage plate (706) is fixed at one end of the second polygonal rod (705) near the disc base (702). A second reinforcing spring (707) is sleeved on the second polygonal rod (705). The two ends of the second reinforcing spring (707) are fixed to the linkage plate (706) and the mounting base (5) respectively. A reinforcing connecting rod (708) is threaded on the linkage plate (706). The inner end of the reinforcing connecting rod (708) is inserted into the linkage hole of the disc base (702). A limiting screw (709) is fixed on the mounting base (5). The middle part of the limiting screw (709) slides in the longitudinal hole of the disc base (702). An adjusting nut (710) is threaded on the limiting screw (709). The adjusting nut (710) presses against the bottom surface of the disc base (702).

8. The mold structure for a segmented high-pressure injection process according to claim 7, characterized in that, The sealing tube assembly (9) includes a sealing tube body (901) that slides within the opening and closing channel (106), and a sliding tube body (701) that slides within the sealing tube body (901). One end of the sealing tube body (901) away from the opening and closing channel (106) rotates on a movable bracket (902). The movable bracket (902) is threaded onto a regulating screw (903). One end of the regulating screw (903) is connected to the output shaft of a regulating motor (904), which is fixed to... On the disc base (702); the adjusting screw (903) is slidably fitted with the rotating tube (905), the inner side of the rotating tube (905) is provided with a protruding ridge, the protruding ridge slides in the limiting groove of the adjusting screw (903), the rotating tube (905) is fixed with a first gear (906), the first gear (906) meshes with a second gear (907), the second gear (907) is fixed on the sealing tube body (901), and the rotating tube (905) and the sealing tube body (901) both rotate on the linkage frame (908).

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