A quick coupling mold for injection molded parts
By using a layered structure and high-strength materials in the quick-connect mold design for injection molded parts, the problem of time-consuming and labor-intensive mold replacement has been solved, enabling rapid mold replacement and efficient production, improving mold stability and molding accuracy, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 湖州道和汽车零部件有限公司
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-26
AI Technical Summary
The replacement of existing injection molds is time-consuming and labor-intensive, with complex structures, poor adaptability, and high costs. It is difficult to meet the modern injection molding industry's demand for high efficiency, low cost, and intelligence. Furthermore, long-term use may lead to a decrease in molding accuracy and a shortened mold life.
The quick-connect mold design for injection molded parts adopts a layered structure, with the mold core detachably connected to the top block. Combined with high-strength materials and an automatic reset structure, it ensures the stability and durability of the mold. Each part of the mold can be designed and manufactured independently, facilitating maintenance and replacement.
Significantly reduce the manufacturing cost of new molds, improve the service life and production efficiency of molds, ensure molding accuracy and product quality, reduce manual intervention, and enhance the automation level and production flexibility of molds.
Smart Images
Figure CN224408326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding mold technology, and in particular to a quick-connect mold for injection molded parts. Background Technology
[0002] Injection molding is one of the most widely used molding processes in modern plastic product manufacturing. It involves injecting heated and molten plastic into a mold cavity, which then cools and solidifies to obtain a product of the desired shape. The mold, as a key piece of equipment in injection molding, directly determines the structural precision, molding cycle, and production efficiency of the product.
[0003] Traditional injection mold changes typically involve multiple steps, such as positioning, connection, fastening, and disassembly / reassembly of cooling water and hot runner systems. This process is time-consuming and labor-intensive, severely impacting production efficiency, especially in high-variety, low-batch production models. Furthermore, frequent mold changes can increase equipment idle time and create safety hazards for manual operation.
[0004] Currently, some quick-change mold systems have been applied in injection molding equipment, such as through standardized interfaces, quick clamping mechanisms, and modular design to shorten changeover time. However, existing technologies still suffer from problems such as complex structure, poor adaptability, high cost, and cumbersome operation, making it difficult to meet the modern injection molding industry's demands for high efficiency, low cost, and intelligence.
[0005] Therefore, there is an urgent need for a quick-connect mold design for injection molded parts that is simple in structure, easy to operate, highly versatile, and can achieve rapid mold change, so as to improve the flexibility and automation level of injection molding production.
[0006] Chinese patent CN107553818B discloses a quick-release injection mold, including a female mold and a quick-release injection mold, comprising a middle module, a front module, a rear module, a positioning pin, a locking mechanism, and a limiting mechanism. During production, the metal part is first placed onto the positioning pin in the opening slot, thus smoothly completing the placement of the metal part. Then, the front and rear modules are moved along the guide rod until they abut against and lock with the middle module. This allows the rear wall of the front module, the first protrusion, the second protrusion of the rear module, the opening slot of the middle module, and the positioning pin to collectively form a lower cavity. After mold closing, the lower cavity and the upper cavity on the male mold form a molding space for molding the plastic part. After injection molding, the mold is opened and the female mold is removed. The locking mechanism is released from the front and rear modules and the middle module. The front and rear modules are then driven to disengage the first and second protrusions from the groove and notch, respectively, allowing the product to be removed from the opening slot, thus smoothly completing the demolding and removal operation of the finished charging terminal.
[0007] However, this technical solution uses multiple mold components to work together to form a molding space for molding plastic parts. Long-term use may lead to loosening of the fit, affecting molding accuracy and mold life. In addition, a reliable locking mechanism is required to fix each component. Failure of the locking mechanism may cause unstable mold opening and closing, resulting in poor injection molding quality that does not meet the requirements. Utility Model Content
[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing a quick-connect mold for injection molding parts. By installing a mold core between the top block and the middle block, the function of injection molding is achieved within the mold core. The mold core is the core part of injection molding, used to define the shape and size of the injection molded part. When a new mold is no longer needed, it can be disassembled and the original mold's middle structure restored, allowing the mold to continue to be used normally. This achieves modular replacement, and the design eliminates the need for special fixed tooling for new molds, significantly reducing the manufacturing cost of new molds and effectively accelerating the product development process.
[0009] To achieve the above objectives, this utility model provides the following technical solution:
[0010] A quick-connect mold for injection molding includes: a top plate, a top block disposed below the top plate, an intermediate block disposed below the top block, a plurality of bottom blocks disposed below the intermediate blocks, and a bottom plate disposed below the bottom blocks, wherein a mold core is detachably connected to the interior of the top block.
[0011] Preferably, a main channel is provided in the middle of the top plate, and the main channel is connected to the mold core.
[0012] Preferably, a plurality of ejector plates are provided between the bottom blocks.
[0013] Preferably, a plurality of guide posts are provided between the intermediate block and the ejector plate.
[0014] Preferably, a reset element is sleeved on the outer periphery of the guide post.
[0015] Preferably, a plurality of return needles are provided on one side of the guide post, and the return needles are staggered from the guide post.
[0016] Preferably, a plurality of grooves are provided between the top block and the middle block.
[0017] Preferably, the positioning posts inside the intermediate block are adapted to the positioning guide sleeves inside the top block.
[0018] Preferably, the top plate and the top block are fixedly connected by a plurality of first fasteners.
[0019] Preferably, the bottom block and the bottom plate are fixedly connected by a plurality of second fasteners.
[0020] The beneficial effects of this utility model are as follows:
[0021] (1) The present invention installs the mold core into the top block by means of detachable connection, which makes it easy to replace the mold core to adapt to the production needs of different products. There is no need to process special fixed tooling for the new mold core, which significantly reduces the manufacturing cost of the new mold and effectively speeds up the product development process.
[0022] (2) By adopting a layered structure, the various parts of the mold can be designed and manufactured independently, which is convenient for maintenance and replacement. The layered structure can better withstand the pressure during the injection molding process, improve the stability and durability of the mold, and thus improve the service life of the mold.
[0023] (3) This utility model achieves automatic demolding through an automatic reset structure. The elastic force of the reset component can ensure that the ejector plate is reset smoothly and quickly, improve the automation level of the mold, reduce manual intervention, and thus ensure the stability of each injection cycle.
[0024] (4) This utility model improves the wear resistance and service life of the mold by using high-strength materials to process the quick-connect mold for injection molding, ensures molding accuracy, and reduces deformation and damage. Specifically, high-strength steel such as P20, H13 or 718H is used to manufacture the cavity and core. The mold frame is made of high-quality carbon steel or aluminum alloy to reduce weight. The quick-connect parts are mostly made of wear-resistant, stainless steel and corrosion-resistant materials to ensure durability and quick connection performance. At the same time, it enhances the rigidity of the mold, improves the stability of the injection molding process and product quality, and reduces the maintenance frequency and production cost.
[0025] In summary, this utility model has the advantages of high work efficiency, good product quality, good stability and firmness, long service life, low cost, simple structure and convenient assembly and disassembly. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0027] Figure 2 This is a cross-sectional view of the center section of this utility model;
[0028] Figure 3 This is a sectional view of the central longitudinal section of this utility model;
[0029] Figure 4 This is a cross-sectional view of the present invention taken from the positioning post.
[0030] Figure 5 This is a schematic diagram of the structure of this utility model without the top block and the middle block. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] In the description of this utility model, 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," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0033] Example
[0034] like Figures 1-5 As shown, this embodiment provides a quick-connect mold for injection molding, including: a top plate 1, a top block 2 disposed below the top plate 1, an intermediate block 3 disposed below the top block 2, a plurality of bottom blocks 4 disposed below the intermediate block 3, and a bottom plate 5 disposed below the bottom blocks 4. The top block 2 is detachably connected to a mold core 21. The layered structure allows each part of the mold to be designed and manufactured independently, which is convenient for maintenance and replacement. Moreover, the layered structure can better withstand the pressure during the injection molding process, improve the stability and durability of the mold, and thus improve the service life of the mold.
[0035] Among them, the mold core 21 is the core part of injection molding, which is used to define the shape and size of the injection molded part. Setting the mold core 21 inside the top block 2 can ensure a tight fit between the mold core 21 and the top plate 1, reduce heat loss, improve the molding quality of the injection molded part, and the detachable connection makes it easy to replace the mold core 21 to adapt to the production needs of different products. There is no need to process special fixed tooling for the new mold core 21, which significantly reduces the manufacturing cost of the new mold and effectively accelerates the product development process.
[0036] Meanwhile, a main channel 11 is provided in the middle of the top plate 1, and the main channel 11 is connected to the mold core 21. The main channel 11 is the channel for the plastic melt to enter the mold. The main channel 11 is located in the middle of the top plate 1 to ensure that the plastic melt is evenly distributed in the mold core 21, reduce the resistance of melt flow, improve the injection speed and molding quality, and thus improve the injection efficiency.
[0037] In this embodiment, a plurality of ejector plates 41 are provided between the bottom blocks 4. The ejector plates 41 are used to eject the molded injection parts so that they can be easily demolded from the mold core 21. Preferably, there are two bottom blocks 4, and the two ejector plates 41 are installed close to each other in layers. Installing the ejector plates 41 between the two bottom blocks 4 can make full use of the space, ensure the stability and reliability of the ejector plates 41, improve demolding efficiency, and reduce demolding damage to the injection parts. It is also convenient to design and install multiple ejector plates 41 to adapt to injection parts of different shapes.
[0038] In this embodiment, a plurality of guide posts 42 are provided between the intermediate block 3 and the ejector plate 41. The guide posts 42 are used to guide the movement of the ejector plate 41, ensuring that the ejector plate 41 moves smoothly and accurately during ejection and resetting, improving the movement accuracy of the ejector plate 41, avoiding jamming or deflection, and extending the service life of the mold.
[0039] In this embodiment, a reset member 43 is sleeved on the outer periphery of the guide post 42, which is generally preferably a reset spring. This is used to reset the ejector plate 41 to its initial position after the ejection action is completed, so as to facilitate product demolding. The elastic force of the reset member 43 can ensure that the ejector plate 41 is reset smoothly and quickly, improve the automation level of the mold, reduce manual intervention, and thus ensure the stability of each injection cycle.
[0040] In this embodiment, a plurality of return pins 44 are provided on one side of the guide post 42 to assist the reset action of the ejector plate 41, ensuring its smooth and reliable action and ensuring that the ejector plate 41 will not get stuck during the reset process; the return pins 44 are staggered from the guide post 42, that is, the two do not interfere with each other, so that the two can work independently and improve the reliability of the mold.
[0041] In this embodiment, a plurality of grooves 22 are provided between the top block 2 and the middle block 3, preferably rectangular grooves, etc. These grooves are used to install auxiliary components or adjust the mold structure (such as cooling channels, heating elements, etc.) to improve the flexibility of the mold and adapt to the needs of different injection molded parts, or to position and fix the mold core 21. The design of the grooves 22 can be adjusted according to specific needs to improve the flexibility of the mold.
[0042] In this embodiment, the plurality of positioning pins 31 inside the intermediate block 3 correspond to and are adapted to the plurality of positioning guide sleeves 23 inside the top block 2. The two work together to ensure that the opening and closing action of the mold is accurate and stable, improve the molding accuracy of the injection molded parts, thereby reducing the wear of the mold during the opening and closing process, reducing the mold maintenance cost, and increasing the service life of the mold.
[0043] In this embodiment, four positioning guide sleeves 23 are preferably installed at the four corners of the top block 2, and four positioning pins 31 are correspondingly set to ensure accurate positioning of the mold and prevent assembly errors.
[0044] In this embodiment, the top plate 1 and the top block 2 are fixedly connected by a number of first fasteners 12, which firmly connect the top plate 1 and the top block 2 together to ensure that they will not loosen during the injection molding process.
[0045] In this embodiment, the bottom block 4 and the bottom plate 5 are fixedly connected by a number of second fasteners 51, which can ensure the stability of the bottom of the mold, prevent loosening or deformation during injection molding, and improve the overall strength and stability of the mold. The second fasteners 51 are further preferably completely penetrating the bottom block 4 and extending into the interior of the middle block 3. That is, the second fasteners 51 fix the middle block 3, the bottom block 4 and the bottom plate 5 together, further ensuring the stability of the overall structure of the mold.
[0046] In this embodiment, both the first fastener 12 and the second fastener 51 can preferably be bolts, which facilitates installation and disassembly and reduces maintenance costs.
[0047] Of course, the quick-connect mold design of this injection mold has a reasonable overall structure and tight fit of the parts, which not only ensures the stability and precision of the mold, but also facilitates the quick disassembly and maintenance of the mold, greatly improving production efficiency and mold service life; and the reinforced design of the bottom block 4 further enhances the load-bearing capacity of the mold and adapts to the needs of high-intensity production.
[0048] In addition, this mold uses high-strength materials to process quick-connect injection molds, which can improve the mold's wear resistance and service life, ensure molding accuracy, and reduce deformation and damage. Specifically, high-strength steel such as P20, H13 or 718H is used to manufacture the cavity and core, and the mold base is made of high-quality carbon steel or aluminum alloy to reduce weight. Quick-connect parts are mostly made of wear-resistant, stainless steel and corrosion-resistant materials to ensure durability and quick connection performance. At the same time, it enhances the rigidity of the mold, improves the stability of the injection molding process and product quality, and reduces maintenance frequency and production costs.
[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A quick-connect mold for injection molded parts, characterized in that, include: The top plate, the top block disposed below the top plate, the middle block disposed below the top block, the several bottom blocks disposed below the middle blocks, and the bottom plate disposed below the bottom blocks, wherein the mold core is detachably connected to the interior of the top block.
2. The quick-connect mold for injection molded parts according to claim 1, characterized in that, A main channel is provided in the middle of the top plate, and the main channel is connected to the mold core.
3. The quick-connect mold for injection molded parts according to claim 1, characterized in that, Several ejector plates are provided between the bottom blocks.
4. A quick-connect mold for injection molded parts according to claim 3, characterized in that, Several guide posts are provided between the intermediate block and the ejector plate.
5. A quick-connect mold for injection molded parts according to claim 4, characterized in that, A reset element is fitted around the outer periphery of the guide post.
6. A quick-connect mold for injection molded parts according to claim 4, characterized in that, A plurality of return needles are provided on one side of the guide post, and the return needles are offset from the guide post.
7. A quick-connect mold for injection molded parts according to claim 1, characterized in that, Several grooves are provided between the top block and the middle block.
8. A quick-connect mold for injection molded parts according to claim 1, characterized in that, The positioning pins inside the intermediate block are matched with the positioning guide sleeves inside the top block.
9. A quick-connect mold for injection molded parts according to claim 1, characterized in that, The top plate and the top block are fixedly connected by a number of first fasteners.
10. A quick-connect mold for injection molded parts according to claim 1, characterized in that, The bottom block and the bottom plate are fixedly connected by a number of second fasteners.