Precise injection mold capable of reducing contact indentation of embedded insert

Abstract

The utility model relates to the technical field of injection molds, in particular to a precise injection mold capable of reducing contact indentations of an embedded insert. According to the technical scheme, an injection molding opening is formed in an upper mold base, a forming cavity is formed in a lower mold base, a vibration module is installed in the forming cavity, sliding blocks are installed at the positions, located at the two ends of the vibration module, in the forming cavity in a sliding mode, core rods are fixedly inserted into the sliding blocks, and springs are arranged at the positions, located between baffles and the core rods, of the outer side of the lower mold base in a sleeving mode. An inclined guide rod is arranged below the upper die base and connected with the sliding block in an inserted mode. A rubber block is arranged in the vibration module, and ultrasonic transducers are embedded in the two ends of the rubber block. According to the utility model, the problem that the existing device is limited by the size of the core insert on the cavity plate during injection molding is effectively solved. And the die can produce parts with larger sizes, and meanwhile, high precision and consistency are kept, so that the production scale and the application range of the die are expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely relates to a kind of precision injection mold for reducing embedded insert contact indentation. BACKGROUND

[0002] Injection mold belongs to injection molding field, for producing various shapes of products or parts, specifically refers to the heated molten plastic is injected into mold cavity by high pressure, after cooling solidification, obtain final shaped product. Some injection products will be configured in injection mold insert, such as insert metal sheet, to form the composite of metal and plastic.

[0003] Through retrieval, patent announcement No.CN201810569728.4 discloses injection mold, although the device is used by setting vibration device, the vibration device includes main body part and vibration part connected with the main body part, the vibration part is arranged in the female mold core, and the vibration part is arranged between the adjacent two hot runners. The vibration device of the above-mentioned injection mold applies vibration to female mold core to enhance the bonding strength of plastic at bonding line, but the size of injection molding part is limited by the size of male mold core on female mold plate when the device is used, and male mold core is uniformly distributed on female mold plate, so only small parts can be injection molded. This limitation makes the mold unable to play a role when producing large or medium-sized parts, thereby limiting its production scale and application range. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of precision injection mold for reducing embedded insert contact indentation, solve the problems raised in background art.

[0005] The technical problem solved by the utility model is as follows:

[0006] A kind of precision injection mold for reducing embedded insert contact indentation, including bottom plate, the bottom plate is installed with lower die holder, the lower die holder is installed with upper die holder, and the upper die holder is equipped with injection port;

[0007] The interface of the buffer plate and the lower die holder is communicated by cooling circulation pipe, the lower die holder is provided with forming cavity, the vibration module is installed in the forming cavity, the slider is slidably installed in the forming cavity at the both ends of vibration module, the core rod is inserted and fixed in the slider, the baffle is arranged at the both ends of forming cavity outside the lower die holder, the spring is sleeved between the baffle and the core rod outside the lower die holder, the inclined guide rod is arranged below the upper die holder, and the inclined guide rod and the slider are inserted with each other.

[0008] The injection port is communicated with the molding cavity through a flow channel. A gap is left between the molding cavity and the vibration module. A rubber block is provided in the vibration module. Ultrasonic transducers are embedded at both ends of the rubber block.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, a guide hole is provided on the lower die base, and a vertical guide rod is provided on the upper die base. The upper die base is installed above the lower die base through the vertical guide rod and the guide hole cooperating with each other.

[0011] The beneficial effects of adopting the above further scheme are:

[0012] The combination of vertical guide rods and guide holes ensures precise alignment of the upper and lower mold bases during mold closing. This design reduces mold deviation during mold closing, thereby improving product precision and consistency. The vertical guide rods and guide holes ensure the mold maintains a stable position during the injection molding process. This helps prevent mold deformation or displacement during high-pressure injection molding, thereby ensuring product quality and safety. The design of the vertical guide rods and guide holes simplifies mold installation and commissioning. Workers can easily align and secure the upper and lower mold bases without complex adjustments.

[0013] Furthermore, the oblique guide rod drives the slider to move toward or in opposite directions in the molding cavity, thereby separating the slider and the core rod from the molded part through the action of the oblique guide rod and the core rod.

[0014] The beneficial effects of adopting the above further scheme are:

[0015] The design of the inclined guide rod enables the slider to move toward or against each other within the mold cavity. This movement ensures smooth separation between the slider and core rod and the molded part. Compared with traditional demolding methods, this design can significantly improve demolding efficiency and reduce production time. Due to the coordinated action of the inclined guide rod and slider, the friction experienced by the molded part during the demolding process is greatly reduced. This helps to reduce indentations and damage on the molded part surface, improving the surface quality and aesthetics of the product. The smooth movement of the inclined guide rod and slider helps to reduce mold wear during the demolding process. Compared with traditional demolding methods, this design can significantly reduce mold wear, thereby extending the mold's service life.

[0016] Furthermore, there are two molding cavities in total, and both molding cavities are communicated with the flow channel.

[0017] The beneficial effects of adopting the above further scheme are:

[0018] The dual-cavity design allows two parts to be produced simultaneously during a single injection molding process, doubling production efficiency compared to single-cavity molds. In large-scale production, this design can significantly shorten production cycles and improve overall production efficiency. This increased production efficiency reduces fixed costs per product (such as mold depreciation, worker wages, and energy consumption). Furthermore, dual-cavity molds offer higher utilization rates, further reducing the cost per product. Both mold cavities are connected to the runner, ensuring that the molten plastic flows and fills the mold in the same manner. This helps ensure consistent dimensions, weight, and quality between the two parts, meeting the requirements of high-precision production. Dual-cavity molds more fully utilize the injection molding machine's injection capacity and the mold's load-bearing capacity during the injection molding process. Compared to single-cavity molds, this design reduces the frequency of mold changes and adjustments, improving mold utilization and overall production efficiency.

[0019] Furthermore, heat insulation plates are provided at both ends of the vibration module, and the heat insulation plates are located between the ultrasonic transducer and the raw material.

[0020] The beneficial effects of adopting the above further scheme are:

[0021] The presence of the thermal shield effectively blocks heat transfer, ensuring the stability and consistency of the raw material during the injection molding process. It also reduces the impact of heat from the mold and other components on the ultrasonic transducer. While blocking heat, the shield also optimizes the transmission of ultrasonic vibrations. This allows for a more concentrated transfer of ultrasonic vibrations to the raw material, minimizing energy loss and dispersion, thereby improving the effectiveness and efficiency of ultrasonic processing.

[0022] Furthermore, a wire inlet is provided at the bottom end of the vibration module.

[0023] The beneficial effects of adopting the above further scheme are:

[0024] The cable inlet design allows the wires required for the vibration module to enter the mold neatly and orderly, avoiding disorganization and entanglement. This not only improves mold cleanliness but also helps reduce the risk of wire damage from friction or compression. By routing the wires through a dedicated cable inlet, safety regulations are ensured for their placement within the mold. This helps prevent safety hazards such as electric shock and short circuits caused by exposed or improperly arranged wires. If the vibration module or wires malfunction, the cable inlet allows for convenient repair and replacement. This reduces repair complexity and time costs, improving mold maintenance efficiency.

[0025] Furthermore, the vibration module is cooled by the lower die base.

[0026] The beneficial effects of adopting the above further scheme are:

[0027] Cooling the vibration module through the lower die base fully utilizes the mold's internal cooling system. The lower die base is equipped with cooling water channels or cooling medium channels that effectively remove heat generated by the vibration module, thereby improving cooling efficiency. This helps ensure that the vibration module maintains a stable temperature during operation, preventing overheating that affects its performance and lifespan. Integrating the cooling of the vibration module with the lower die base simplifies the mold's cooling structure. This eliminates the need to design a complex cooling system for the vibration module, reducing mold manufacturing cost and complexity.

[0028] The utility model provides a precision injection mold that reduces contact indentations of embedded inserts. It has the following beneficial effects:

[0029] Through specific structural design, such as the sliding installation of the slider and core rod, and the coordinated use of the oblique guide rod, the separation of the molded part and the mold can be effectively achieved, thereby reducing the contact indentation of the embedded insert during the injection molding process and improving the surface quality and precision of the product.

[0030] The mold is equipped with a cooling circulation pipe, which feeds cooling medium into the buffer plate and lower mold base through the interface to achieve rapid cooling of the mold. This helps shorten the injection molding cycle and improve production efficiency. It also helps maintain mold temperature stability, thereby ensuring consistent product quality.

[0031] The vibration module installed in the molding cavity can generate vibrations through ultrasonic transducers. This vibration helps to evenly distribute the plastic raw materials in the mold and quickly solidify them. It can also assist in demolding, reduce the friction between the mold and the molded part, and further reduce indentations and damage.

[0032] The upper and lower mold bases are positioned in a limited position through the cooperation of vertical guide rods and guide holes, ensuring mold clamping accuracy and stability. Furthermore, the sliding installation of the slider and core rod, along with the elastic support of the spring, enables the mold to adapt to varying injection pressures and temperatures during the injection process, improving its adaptability and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0034] In the attached figure:

[0035] Figure 1 This is a schematic diagram of the main appearance of the utility model;

[0036] Figure 2 This is a schematic diagram of the main exploded structure of the utility model;

[0037] Figure 3 This is a schematic diagram of the explosion structure when viewed from above of the present utility model;

[0038] Figure 4 It is a cross-sectional schematic diagram of the vibration module of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] 1. Buffer plate; 2. Bottom plate; 3. Lower mold base; 301. Interface; 302. Cooling circulation pipe; 303. Baffle; 304. Guide hole; 305. Slider; 306. Vibration module; 3061. Heat insulation board; 3062. Rubber block; 3063. Heat conductive block; 3064. Wire inlet; 3065. Ultrasonic transducer; 307. Runner; 308. Spring; 309. Core rod; 310. Molding cavity; 4. Upper mold base; 401. Injection port; 402. Vertical guide rod; 403. Diagonal guide rod. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] See also Figures 1 to 4 As shown, the embodiment provided by the utility model:

[0043] Example 1

[0044] A precision injection mold for reducing contact indentations of embedded inserts includes a base plate 2, a lower mold base 3 is mounted on the base plate 2, an upper mold base 4 is mounted on the lower mold base 3, a guide hole 304 is provided on the lower mold base 3, and a vertical guide rod 402 is provided on the upper mold base 4. The upper mold base 4 is mounted above the lower mold base 3 by means of the vertical guide rod 402 and the guide hole 304, and the precise fit between the vertical guide rod 402 and the guide hole 304 ensures that the upper mold base 4 and the lower mold base 3 are precisely aligned during the mold closing process. This design significantly reduces the deviation when the mold is closed, thereby improving the accuracy and consistency of the product. Through the limiting assembly of the vertical guide rod 402 and the guide hole 304, the mold can maintain a stable positioning during the injection molding operation, effectively preventing the mold from deforming or displacing under high-pressure injection molding conditions, thereby ensuring the quality and safety of the product. In addition, this design simplifies the installation and debugging process of the mold. The staff can easily align and fix the upper mold base 4 and the lower mold base 3 without complicated adjustment operations. The upper mold base 4 is provided with an injection port 401, and the buffer plate 1 and the lower mold base 3 are provided with interfaces 301 on both sides. The interfaces 301 of the buffer plate 1 and the lower mold base 3 are connected through a cooling circulation pipe 302. A cooling medium is introduced into the buffer plate 1 and the lower mold base 3 through the interface 301 to cool the buffer plate 1 and the lower mold base 3. A molding cavity 310 is provided on the lower mold base 3, and a vibration module 306 is installed in the molding cavity 310. The vibration module 306 is cooled by the lower mold base 3. By cooling the vibration module 306 through the lower mold base 3, the cooling system resources inside the mold can be fully utilized. The cooling water channel or cooling medium channel equipped with the lower mold base 3 can effectively take away the heat generated by the vibration module 306, thereby improving the cooling efficiency. This helps ensure that the vibration module 306 maintains a stable temperature range during operation, avoiding overheating that affects its performance and service life. Combining the cooling of the vibration module 306 with the lower mold base 3 simplifies the cooling structure design of the mold, eliminating the need to design a complex cooling system for the vibration module 306, thereby reducing the manufacturing cost and complexity of the mold. Sliders 305 are slidably installed at both ends of the vibration module 306 in the molding cavity 310, and a core rod 309 is inserted and fixed in the slider 305. Baffles 303 are provided on the outside of the lower mold base 3 at both ends of the molding cavity 310. A spring 308 is sleeved between the baffle 303 and the core rod 309 on the outside of the lower mold base 3. An oblique guide rod 403 is provided below the seat 4 and is interlocked with the slider 305. The oblique guide rod 403 drives the slider 305 to move toward or in opposite directions within the molding cavity 310, thereby separating the slider 305 and the core rod 309 from the molded part. The innovative design of the oblique guide rod 403 enables the slider 305 to move flexibly toward or in opposite directions within the molding cavity 310. This movement mechanism ensures that the slider 305 and the core rod 309 can be smoothly separated from the molded part. Compared with traditional demolding methods, this design significantly improves demolding efficiency and shortens production cycle time.The tight fit between the inclined guide rod 403 and the slider 305 effectively reduces friction during demolding, thereby minimizing surface marks and damage, and improving the surface quality and aesthetics of the product. Furthermore, the smooth movement of the inclined guide rod 403 and the slider 305 reduces mold wear during demolding, extending the mold's service life.

[0045] Example 2

[0046] In order to ensure that the raw materials are evenly distributed in the molding cavity 310, for example, Figures 1 to 4As shown, the present application also includes: injection molding port 401 is communicated with forming cavity 310 through flow channel 307, forming cavity 310 is provided with two, and two forming cavities 310 are communicated with flow channel 307, double forming cavity 310 design allows two products to be produced simultaneously in one injection molding cycle, compared with single forming cavity 310 mold, the production efficiency is doubled. In mass production, this design can significantly shorten the production cycle and improve the overall production efficiency. Due to the improvement of production efficiency, the fixed cost (such as mold depreciation, labor cost, energy consumption, etc.) of each product is correspondingly reduced. In addition, the utilization rate of double forming cavity 310 mold is higher, which further reduces the cost of single product. Two forming cavities 310 are communicated with flow channel 307, which ensures the consistency of the flow and filling process of molten plastic in the two cavities, thereby ensuring the consistency of the size, weight and quality of the two products, meeting the requirements of high-precision production. At the same time, double forming cavity 310 mold can make full use of the injection capacity of injection molding machine and the bearing capacity of mold, reduce the frequency of mold replacement and debugging, improve the utilization rate of mold and overall production efficiency, and leave a gap between forming cavity 310 and vibration module 306. Rubber block 3062 is arranged in vibration module 306, ultrasonic transducer 3065 is embedded at both ends of rubber block 3062, heat insulation plate 3061 is arranged at both ends of vibration module 306, heat insulation plate 3061 is located between ultrasonic transducer 3065 and raw materials, and the existence of heat insulation plate 3061 effectively blocks the heat transfer path, ensuring the thermal stability and consistency of the raw materials during injection molding. Heat insulation plate 3061 can significantly reduce the heat influence of ultrasonic transducer 3065 on the mold and other parts. At the same time, the heat insulation plate 3061 can optimize the transmission path of ultrasonic vibration, and the ultrasonic vibration is more concentratedly transmitted to the raw materials, reducing the loss and dispersion of energy, thereby improving the effect and efficiency of ultrasonic treatment. The bottom end of vibration module 306 is provided with wire inlet 3064, and the design of wire inlet 3064 realizes the neat and orderly entry of the wires required by vibration module 306 into the mold, avoiding the disorder and mutual entanglement of the wires. This not only improves the neatness of the mold, but also helps to reduce the risk of damage to the wires due to friction or extrusion. By introducing the wires from the special wire inlet 3064, it is ensured that the arrangement of the wires in the mold meets the electrical safety specifications, preventing the risk of electric shock, short circuit and other safety hazards caused by exposed or improper arrangement of the wires. When vibration module 306 or wires fail, maintenance and replacement operations can be easily performed through wire inlet 3064, reducing the difficulty and time cost of maintenance and improving the maintenance efficiency of the mold.

[0047] Working principle:

[0048] Plastic pellets are heated to melting temperature, typically by a heating barrel and screw. The injection molding machine's screw pushes the molten plastic under high pressure into the mold's runners 307. The molten plastic flows through runners 307 into two molding cavities 310. The design of the molding cavities 310 ensures that the plastic fills the entire mold cavity evenly and fully.

[0049] During or after the injection molding process, vibration module 306 begins operation. Ultrasonic transducer 3065 generates vibrations, which are transmitted to the plastic in molding cavity 310 via heat shield 3061. This vibration helps evenly distribute the plastic material within the mold. It also reduces friction between the mold and the molded part, facilitating subsequent demolding.

[0050] A cooling medium (such as water or coolant) is introduced into the buffer plate 1 and lower mold base 3 through the interface 301. The cooling circulation pipe 302 ensures that the cooling medium circulates inside the mold, thereby rapidly reducing the mold temperature. As the mold temperature decreases, the plastic in the molding cavity 310 gradually solidifies.

[0051] When the plastic is completely solidified, the upper mold base 4 begins to rise. The oblique guide rod 403 is plugged into the slider 305 and drives the slider 305 to move in the opposite direction within the molding cavity 310. As the slider 305 moves, the core rod 309 is gradually pulled out of the molded part. The elastic support of the spring 308 ensures that the slider 305 and the core rod 309 can be separated from the molded part smoothly and smoothly. Finally, the mold is opened and the molded part that has been separated from the mold is removed. Due to the auxiliary function of the vibration module 306 and the design of the oblique guide rod 403, the surface quality of the molded part is significantly improved, and the contact indentation of the embedded insert is greatly reduced.

[0052] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0053] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A precision injection mold for reducing contact indentations of embedded inserts, comprising a buffer plate (1) and a base plate (2), wherein a lower mold base (3) is mounted on the base plate (2), an upper mold base (4) is mounted on the lower mold base (3), and an injection port (401) is provided on the upper mold base (4), characterized in that: Interfaces (301) are provided on both sides of the buffer plate (1) and the lower die base (3), and the interfaces (301) of the buffer plate (1) and the lower die base (3) are communicated through a cooling circulation pipe (302). A molding cavity (310) is provided on the lower die base (3), a vibration module (306) is installed in the molding cavity (310), sliders (305) are slidably installed at both ends of the vibration module (306) in the molding cavity (310), a core rod (309) is inserted and fixed in the slider (305), baffles (303) are provided on the outer side of the lower die base (3) at both ends of the molding cavity (310), a spring (308) is sleeved between the baffles (303) and the core rod (309) on the outer side of the lower die base (3), an oblique guide rod (403) is provided below the upper die base (4), and the oblique guide rod (403) and the slider (305) are plugged into each other; The injection port (401) is connected to the molding cavity (310) through a flow channel (307), a gap is left between the molding cavity (310) and the vibration module (306), a rubber block (3062) is provided in the vibration module (306), and ultrasonic transducers (3065) are embedded at both ends of the rubber block (3062).

2. A precision injection mold for reducing contact indentations of embedded inserts according to claim 1, characterized in that: A guide hole (304) is provided on the lower die base (3), a vertical guide rod (402) is provided on the upper die base (4), and the upper die base (4) is installed above the lower die base (3) by means of the vertical guide rod (402) and the guide hole (304) cooperating with each other to limit the position.

3. A precision injection mold for reducing contact indentations of embedded inserts according to claim 1, characterized in that: The oblique guide rod (403) drives the slider (305) to move toward or in opposite directions in the molding cavity (310), thereby separating the slider (305) and the core rod (309) from the molded part through the action of the oblique guide rod (403) and the core rod (309).

4. A precision injection mold for reducing contact indentations of embedded inserts according to claim 1, characterized in that: There are two molding cavities (310) in total, and both molding cavities (310) are in communication with the flow channel (307).

5. The precision injection mold for reducing contact indentations of embedded inserts according to claim 1, characterized in that: Heat insulation plates (3061) are provided at both ends of the vibration module (306), and the heat insulation plates (3061) are located between the ultrasonic transducer (3065) and the raw material.

6. The precision injection mold for reducing contact indentations of embedded inserts according to claim 1, characterized in that: A wire inlet (3064) is provided at the bottom end of the vibration module (306).

7. The precision injection mold for reducing contact indentations of embedded inserts according to claim 1, characterized in that: The vibration module (306) is cooled by the lower die base (3).

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