A mold with a demolding mechanism

Abstract

The utility model provides a kind of mould with stripping mechanism, including upper die group and lower die group, upper die group and lower die group are set on forming machine;Further include: cavity module is set on upper die group;Link one end is set in the cavity in upper die group, the other end is set in cavity module;Forming module is connected with link;In closed die state, forming module is placed in cavity module;Cavity module is set on lower die group;In closed die state, cavity module is inserted into cavity module, and contact with forming module;The mould with stripping mechanism proposed in the utility model is combined by simplified module, and the complex linkage structure of inner shrinkage slider is omitted, while ensuring the smooth stripping of products with reverse buckling, the mould structure is simplified, the processing cycle is shortened, and the product failure rate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold with a demolding mechanism. Background Technology

[0002] Injection molding is a common process used to mold thermoplastic or thermosetting plastics into various shapes using plastic molds, and it is widely used in the plastics manufacturing industry. Existing injection molds typically consist of a mold core forming the injection molding cavity to achieve the molding of the plastic.

[0003] However, when producing injection-molded products with undercut structures, the male mold core cannot directly mold the product due to the presence of the undercut structure, and the product is difficult to eject directly from the mold after molding. To solve this problem, existing technologies generally use an inward-shrinking slider structure. However, the inward-shrinking slider structure requires the design of multiple sets of linked components, resulting in a cumbersome overall mold structure and increasing the difficulty of mold design. In addition, the complex structure increases the number of mold processing steps, prolongs the processing cycle, and increases the mold manufacturing cost. Furthermore, during the injection molding process, the movement of the inward-shrinking slider is prone to causing wear on parts, which in turn causes defects such as burrs on the product, ultimately leading to product scrap and increasing the production defect rate.

[0004] Given the shortcomings of the existing technology, there is an urgent need for a mold that is simple in structure, low in cost, and can reduce the product defect rate in order to meet the production needs of injection molded products with undercut structures. Utility Model Content

[0005] The purpose of this utility model is to provide a mold with a demolding mechanism, which can solve the above-mentioned technical problems; This utility model provides a mold with a demolding mechanism, including an upper mold assembly and a lower mold assembly, both of which are mounted on a molding machine; it also includes: The cavity module is located on the upper module; The connecting rod has one end inserted into the upper module and opened in the movable cavity, and the other end inserted into the cavity module; The molding module is connected to the connecting rod; in the mold-closed state, the molding module is placed inside the cavity module. The core module is set on the lower module; in the mold-closed state, the core module is inserted into the cavity module and comes into contact with the molding module.

[0006] As a further technical solution, it also includes: a buffer component, which is disposed within the movable cavity and between the movable cavity and the connecting rod.

[0007] As a further technical solution, a mounting groove is provided on the connecting rod, and one end of the buffer is inserted into the mounting groove.

[0008] Preferably, the buffer is a spring.

[0009] As a further technical solution, the molding module is provided with mounting holes, and the fastener passes through the mounting holes and connects to the connecting rod.

[0010] As a further technical solution, the fastener is a bolt, which passes through the mounting hole and is threaded into the connecting rod.

[0011] As a further technical solution, the core module includes: The forming column is set on the lower module; A limiting groove is provided at one end of the forming column, and several limiting holes communicating with the limiting groove are provided on the forming column. Several limiting arms, one end of which passes through a limiting hole and is placed in a limiting groove; The limiting core is set in the limiting groove, and the limiting core is provided with several driving surfaces, which are adapted to one end of several limiting arms.

[0012] As a further technical solution, the core module also includes: A limiting block is set in a limiting groove; a limiting core is inserted through the limiting block, and one end of several limiting arms passes through limiting holes and is placed inside the limiting block.

[0013] As a further technical solution, the limiting block is provided with several sliders, and one end of several limiting arms is provided with a sliding groove, which is set on the slider.

[0014] As a further technical solution, a boss is provided at one end of the connecting rod placed in the movable cavity to prevent the connecting rod from dislodging from the movable cavity.

[0015] This invention eliminates the complex linkage components of the internal sliding block by combining a cavity module, connecting rods, and a molding module. During mold closing, the molding module is positioned within the cavity module via the connecting rods, directly forming a product molding cavity with an undercut structure in conjunction with the core module. During mold opening, no multi-part coordinated movement is required; the key demolding action is achieved solely through the constraint of the connecting rods. This simplified design not only reduces the overall complexity of the mold structure but also minimizes the work involved in troubleshooting multi-part interference and verifying linkage logic during the design process. Furthermore, it reduces mold processing steps, shortens the processing cycle, and solves the problems of difficult mold design and low processing efficiency in existing technologies. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a mold with a demolding structure according to the present invention; Figure 2 This is a schematic diagram of the structure of a mold with a demolding structure according to the present invention; Figure 3 for Figure 2 A cross-sectional view along the AA direction; Figure 4 for Figure 3 Enlarged structural diagram of section X in the middle; Figure 5 for Figure 3 A magnified schematic diagram of the structure of the Y-section.

[0018] Explanation of reference numerals in the attached figures: 101-Upper module; 102-Lower module; 200-Cavity module; 300-Connecting rod; 301-Mounting slot; 302-Boss; 400-Molding module; 401-Mounting hole; 500-Core module; 501-Molding column; 502-Limiting groove; 503-Limiting arm; 504-Limiting core; 505-Limiting block; 506-Slider; 600-Buffer; 700-Product. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] 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", "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 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, and therefore should not be construed as a limitation of this utility model.

[0021] 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 as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1-5 As shown, this utility model provides a mold with a demolding mechanism, including an upper mold assembly 101 and a lower mold assembly 102, both of which are mounted on a molding machine. It should be noted that the upper mold assembly 101 and the lower mold assembly 102 utilize existing technology, and will not be further described here. The mold proposed in this utility model also includes: The cavity module 200 is disposed on the upper module 101. In this invention, preferably, the cavity module 200 is embedded in the upper module 101 and moves simultaneously with the upper module 101. One end of the connecting rod 300 passes through the upper module 101 and is formed in the movable cavity, and the other end passes through the cavity module 200. The molding module 400 is connected to the connecting rod 300. In the mold-closed state, the molding module 400 is placed in the cavity module 200. The core module 500 is disposed on the lower module 102. In the mold-closed state, the core module 500 is inserted into the cavity module 200 and contacts the molding module 400. Figure 5As shown, in the mold-closed state, a molding cavity is formed inside the cavity module 200, outside the molding module 400, and outside the core module 500. The product 700 is formed inside the molding cavity, enclosing the cavity module 200, molding module 400, and core module 500. When the mold opens, since the product 700 is enclosed outside the molding module 400 and core module 500, as the upper mold group 101 and lower mold group 102 gradually separate, the product 700 moves simultaneously with the core module 500, pulling the molding module 400 during the movement. Simultaneously, the connecting rod 300 moves within the movable cavity until the other end of the connecting rod 300 contacts the cavity module 200, preventing further movement of the connecting rod 300. Meanwhile, as the lower mold group 102 continues to move... During the molding process, product 700 deforms and separates from molding module 400, completing the demolding operation of product 700; product 700 is then removed from core module 500, completing one molding of product 700; it should be noted that the end of connecting rod 300 placed in the movable cavity is provided with a boss 302 to prevent connecting rod 300 from detaching from the movable cavity; during mold opening, connecting rod 300 moves simultaneously with molding module 400 until boss 302 contacts cavity module 200 and then stops moving, which can prevent connecting rod 300 from detaching from the movable cavity, and at the same time, the boss 302 restricts the movement of connecting rod 300, which can better achieve the separation of product 700 from molding module 400; in addition, the size of connecting rod 300 is set according to actual needs, and the movement distance of molding module 400 can be adjusted by changing the distance of connecting rod 300.

[0023] When the mold closes again, the upper mold 101 and the lower mold 102 gradually approach each other. During the movement of the upper mold 101 and the lower mold 102, the core module 500 contacts the molding module 400 and then squeezes the molding module 400 through the core module 500, and the molding module 400 squeezes the connecting rod 300, so that the connecting rod 300 resets in the movable cavity, completing the mold closing operation. The mold opening and closing operations are repeated to carry out mass production of product 700.

[0024] The technical solution of this utility model eliminates the complex linkage component of the inner sliding block 506 by combining the cavity module 200, the connecting rod 300, and the molding module 400. When the mold is closed, the molding module 400 is positioned inside the cavity module 200 through the connecting rod 300, and directly forms the molding cavity of the product 700 with the undercut structure in cooperation with the core module 500. When the mold is opened, there is no need for the coordinated movement of multiple parts; the key demolding action can be achieved solely through the movement constraint of the connecting rod 300. This simplified design not only reduces the complexity of the overall mold structure, but also reduces the work of troubleshooting interference between multiple parts and verifying linkage logic during the design process. At the same time, it reduces the number of mold processing steps, shortens the processing cycle, and solves the problems of difficult mold design and low processing efficiency in the prior art.

[0025] like Figure 4 As shown, this utility model also includes a buffer member 600, which is disposed within the movable cavity and between the movable cavity and the connecting rod 300. During mold closing, the connecting rod 300 compresses the buffer member 600, placing it in a compressed state. During mold opening, the buffer member 600 actuates the push connection, reducing the tensile force on the product 700. Specifically, the connecting rod 300 has a mounting groove 301, and one end of the buffer member 600 is inserted into the mounting groove 301 to limit the buffer member 600, thereby preventing displacement of the buffer member 600 between the movable cavity and the connecting rod 300. Preferably, the buffer member 600 is a spring.

[0026] like Figure 5 As shown, the molding module 400 is provided with a mounting hole 401. The fixing member passes through the mounting hole 401 and is connected to the connecting rod 300, thereby ensuring that the molding module 400 and the connecting rod 300 can move synchronously. Specifically, the fixing member is a bolt, which passes through the mounting hole 401 and is threadedly connected to the connecting rod 300. In this utility model, the bolt is an internal hex bolt, and the bolt head is placed in the mounting hole 401 after installation to avoid the bolt contacting the core module 500 in the mold-closed state.

[0027] In this utility model, the core module 500 includes a forming post 501, a limiting groove 502, several limiting arms 503, and a limiting core 504; the forming post 501 is disposed on the lower module 102; the limiting groove 502 is formed at one end of the forming post 501, and several limiting holes communicating with the limiting groove 502 are formed on the forming post 501; one end of each of the several limiting arms 503 passes through the limiting holes and is placed in the limiting groove 502; the limiting core 504 is disposed in the limiting groove 502, and several driving surfaces are provided on the limiting core 504, the driving surfaces being adapted to one end of each of the several limiting arms 503; wherein, the limiting core... 504 can move within the limiting groove 502. When the mold is closed, the molding module 400 contacts the limiting core 504 and pushes the limiting core 504 to move within the limiting groove 502. Due to the presence of the driving surface, the limiting core 504 will push several limiting arms 503 to move within the limiting holes during the movement, and place one end of several limiting arms 503 outside the molding pillar 501. In this way, after the product 700 is formed, the limiting core 504 can limit the product 700. At the same time, when the mold is opened, the several limiting arms 503 can make the product 700 more firmly placed on the molding pillar 501.

[0028] After the mold is opened, several limiting arms 503 can be pushed (after the product 700 cools down, the limiting arms 503 can be pushed manually). The limiting arms 503 push the limiting core 504 to move within the limiting groove 502, and at the same time, the limiting arms 503 are placed within the limiting holes. The product 700 is then separated from the molding column 501 manually or by using a robotic arm. In this invention, it is preferable to provide two limiting holes and two limiting arms 503 on the molding column 501, so that the number of limiting holes and driving surfaces matches the number of limiting arms 503. The fitting accuracy of the limiting core 504 and the limiting arms 503 meets the molding requirements.

[0029] Of course, to improve the stability of the limiting arm 503 during movement, a limiting block 505 is preferably also provided, which is disposed in the limiting groove 502; the limiting core 504 passes through the limiting block 505, and one end of each of the limiting arms 503 passes through the limiting hole and is placed in the limiting block 505; and a number of sliders 506 are provided on the limiting block 505, and one end of each of the limiting arms 503 is provided with a sliding groove, which is disposed on the slider 506; in this utility model, the sliders 506 are inclinedly disposed on the limiting block 505, and the sliding grooves at one end of each of the limiting arms 503 are inclinedly disposed; when the limiting core 504 is used to press the limiting arms 503, the sliding grooves on the limiting arms 503 can move along the sliders 506, ensuring the synchronicity and stability of the movement of the limiting arms 503.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mold with a demolding mechanism, comprising an upper mold assembly (101) and a lower mold assembly (102), both the upper mold assembly (101) and the lower mold assembly (102) being mounted on a molding machine; characterized in that, Also includes: A cavity module (200) is disposed on the upper module (101); The connecting rod (300) has one end inserted into the upper module (101) and opened in the movable cavity, and the other end inserted into the cavity module (200); A molding module (400) is connected to the connecting rod (300); in the mold-closed state, the molding module (400) is placed inside the cavity module (200); The core module (500) is disposed on the lower module (102); in the mold-closed state, the core module (500) is inserted into the cavity module (200) and contacts the molding module (400).

2. The mold with a demolding mechanism according to claim 1, characterized in that, Also includes: A buffer (600) is disposed within the movable cavity and between the movable cavity and the connecting rod (300).

3. The mold with a demolding mechanism according to claim 2, characterized in that, The connecting rod (300) has an installation groove (301), and one end of the buffer (600) is inserted into the installation groove (301).

4. The mold with a demolding mechanism according to claim 3, characterized in that, The buffer (600) is a spring.

5. The mold with a demolding mechanism according to claim 1, characterized in that, The molding module (400) is provided with a mounting hole (401), and the fastener passes through the mounting hole (401) and is connected to the connecting rod (300).

6. The mold with a demolding mechanism according to claim 5, characterized in that, The fastener is a bolt, which passes through the mounting hole (401) and is threaded to the connecting rod (300).

7. The mold with a demolding mechanism according to claim 1, characterized in that, The core module (500) includes: A forming column (501) is disposed on the lower module (102); A limiting groove (502) is provided at one end of the forming column (501), and a plurality of limiting holes communicating with the limiting groove (502) are provided on the forming column (501). Several limiting arms (503) have one end passing through the limiting hole and placed in the limiting groove (502); A limiting core (504) is disposed in the limiting groove (502), and the limiting core (504) is provided with a plurality of driving surfaces, which are adapted to one end of a plurality of limiting arms (503).

8. The mold with a demolding mechanism according to claim 7, characterized in that, The core module (500) also includes: A limiting block (505) is disposed in the limiting groove (502); the limiting core (504) passes through the limiting block (505), and one end of several limiting arms (503) passes through the limiting hole and is placed in the limiting block (505).

9. The mold with a demolding mechanism according to claim 8, characterized in that, The limiting block (505) is provided with a plurality of sliders (506), and one end of the plurality of limiting arms (503) is provided with a sliding groove, which is provided on the slider (506).

10. The mold with a demolding mechanism according to claim 1, characterized in that, The connecting rod (300) is provided with a boss (302) at one end placed in the movable cavity to prevent the connecting rod (300) from disengaging from the movable cavity.

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