Injection mold with easy demolding

Abstract

The utility model discloses an injection mold convenient to demould belongs to injection mold technical field. This kind of injection mold convenient to demould, including the bottom plate, the top of bottom plate is equipped with four height -increasing seat, the top of height -increasing seat is equipped with lower mould seat, the top of lower mould seat is seted up to have the mould cavity, the inside bottom of mould cavity is equipped with a pair of die, the inside both sides of mould cavity are all installed with the separating mechanism for separating a pair of die, the adjacent side of a pair of die all is seted up to have the forming chamber, the top both sides of die all are installed with inclined block, the top of lower mould seat is equipped with upper mould seat, the top of upper mould seat is installed with top plate, the bottom of upper mould seat is seted up to have a pair of guide slot, the utility model discloses can effectively realize the accurate forming and efficient demould of injection product, guarantee product integrity, promote injection production efficiency, have higher practical value.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is an injection mold convenient to demould. BACKGROUND

[0002] Injection mold is important equipment for plastics injection molding, and it injects molten plastics raw materials into mold cavity, and after the plastics raw materials are cooled and solidified, the molded plastics products are taken out by opening the mold, that is, a injection molding process is completed. In the prior art, injection mold often faces many problems in the demolding process. Because the plastics products are closely attached to the inner wall of the mold cavity after cooling and solidification, especially for some complex structure, deep cavity or thin wall characteristics of plastics products, the adhesion between the mold cavity is larger, which leads to demolding difficulty.

[0003] Based on the above, the inventor found that the following problems exist: the common demolding method depends on a single ejection mechanism, such as ejector pin ejection, which is easy to make the product unevenly stressed in the ejection process, and further produce deformation, rupture and other problems, which cannot meet the production demand of high quality and high efficiency.

[0004] Therefore, in view of the above, the existing structure and defects are improved, and an injection mold convenient to demould is provided to achieve the purpose of having more practical value. INVENTION CONTENTS

[0005] The utility model discloses an injection mold convenient to demould to solve the common demolding method in the background art, which depends on a single ejection mechanism, such as ejector pin ejection, which is easy to make the product unevenly stressed in the ejection process, and further produce deformation, rupture and other problems, which cannot meet the production demand of high quality and high efficiency.

[0006] In view of the above problems, the technical scheme provided by the utility model is:

[0007] The utility model provides an injection mold of facilitating demoulding, including bottom plate, the top of bottom plate is equipped with four heightening seat, the top of heightening seat is equipped with lower mould seat, the top of lower mould seat is equipped with mould cavity, is equipped with a pair of mould core in the inside bottom of mould cavity, the both sides in the inside of mould cavity are all installed for separating a pair of mould core's separation mechanism, the adjacent side of a pair of mould core is all equipped with forming chamber, the both sides of the top of mould core are all installed with inclined block, the top of lower mould seat is equipped with upper mould seat, the top of upper mould seat is installed with top plate, the bottom of upper mould seat is equipped with a pair of guide groove, the both sides of inside top of guide groove are all in the form of inclination, the outside of inclined block and the inside of guide groove slide connection, the both sides of top of bottom plate are all installed with a pair of guide mechanism, the top of guide mechanism and the bottom of top plate fixed connection, the inside bottom of mould cavity is equipped with ejection hole, the inside of ejection hole is equipped with ejection mechanism.

[0008] Further, the separation mechanism includes a tension spring, one end of the tension spring is fixedly connected with the inner side of the mold cavity, and the other end of the tension spring is fixedly connected with the outer side of the mold core.

[0009] The beneficial effects of the above further scheme are that the inner side of the mold cavity and the outer side of the mold core are connected by the tension spring in the separation mechanism. When the mold is opened, the elastic tension of the tension spring pulls the two mold cores apart, so that the product is separated from the inner wall of the forming chamber of the mold core, and the difficulty of demolding caused by the close adhesion of the product to the mold core is avoided.

[0010] Further, the top end of one side of the mold core is provided with a sliding hole, a guide rod is slidably connected to the inner side of the sliding hole, and the two ends of the guide rod are fixedly connected to the inner sides of the mold cavity.

[0011] The beneficial effects of the above further scheme are that the sliding hole at the top end of one side of the mold core is slidably connected with the guide rod, and the guide rod is fixedly connected to the inner sides of the mold cavity, so that the mold core is limited to move horizontally along the direction of the guide rod, and deviation or inclination of the mold core during separation or convergence is avoided.

[0012] Further, the guide mechanism includes a sleeve rod, the bottom end of the sleeve rod is fixedly connected with the top end of the bottom plate, a lengthening rod is slidably connected to the inner side of the sleeve rod, the top end of the lengthening rod is fixedly connected with the bottom end of the top plate, a spring is installed at the bottom end of the lengthening rod, and the bottom end of the spring is fixedly connected with the inner bottom end of the sleeve rod.

[0013] The beneficial effect of the above further scheme is that the sleeve rod in the guide mechanism is fixed at the top end of the bottom plate to provide stable sliding support for the extension rod; through the sliding cooperation of the extension rod and the sleeve rod, the top plate and the upper die seat are guided to move in the vertical direction, ensuring that the upper die seat accurately docks with the lower die seat during mold closing, avoiding damage caused by upper and lower dislocation of the mold; through the spring at the bottom end of the extension rod, the elastic force of the spring pushes the extension rod upward during mold opening, assisting the automatic mold opening of the upper die seat, reducing the power demand for mold opening, buffering the impact force during mold closing, avoiding damage of the mold parts due to hard collision, and prolonging the service life of the mold.

[0014] Further, the ejection mechanism includes a ejector rod, the outer side of the ejector rod and the inner side of the ejection hole are in sliding sealing cooperation, the middle part of the top end of the bottom plate is provided with a gas cylinder, and the output end of the gas cylinder is fixedly connected with the bottom end of the ejector rod.

[0015] The beneficial effect of the above further scheme is that the ejector rod in the ejection mechanism and the ejection hole are in sliding sealing cooperation, ensuring the sealing of the inside of the mold cavity during injection molding, preventing molten plastic from leaking from the ejection hole; the gas cylinder at the top end of the bottom plate provides automatic power for the ejector rod, and during demolding, the gas cylinder pushes the ejector rod to move upward along the ejection hole, smoothly ejecting the product from the mold cavity, replacing manual demolding and improving demolding efficiency.

[0016] Further, the top end of the top plate is provided with an injection hole in the middle part, and one end of the injection hole extends to the bottom end of the upper die seat.

[0017] The beneficial effect of the above further scheme is that the injection hole at the top end of the top plate extends to the bottom end of the upper die seat, providing a channel for injecting molten plastic into the mold cavity.

[0018] Further, the top end of the bottom plate and the bottom end of the top plate are both provided with mounting holes at the four corners.

[0019] The beneficial effect of the above further scheme is that through the mounting holes at the four corners of the bottom plate and the top plate, the mold is firmly installed on the workbench and the pressing mechanism of the injection molding machine using bolts, preventing the mold from being displaced as a whole due to vibration and pressure during injection molding.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This easy-to-demold injection mold provides a stable load-bearing foundation for the mold through the base plate, supporting core components such as the riser and lower mold base, ensuring that the overall structure of the mold does not shift during injection molding and guaranteeing product molding accuracy; the four riser seats at the top of the base plate raise the lower mold base, providing installation and movement space for the ejection mechanism and avoiding interference between the ejection components and the ground; the mold cavity at the top of the lower mold base cooperates with the mold core to form the basic space for product molding, and the molding chamber of the mold core precisely matches the product shape, ensuring product molding quality; through the separation mechanism inside the mold cavity, a pair of mold cores are pushed apart during demolding, breaking the tight fit between the product and the mold core. This invention features a design that facilitates precise mold closing and avoids product damage during demolding. A ramp at the top of the mold core engages with a guide groove at the bottom of the upper mold base. When the upper mold base closes, the ramp pushes the ramp, causing the mold core to automatically close, ensuring accurate positioning. Guide mechanisms on both sides of the base plate connect to the top plate, guiding the upper mold base to close and open vertically, preventing mold damage or product misalignment due to upper mold base displacement. An ejector hole at the bottom of the mold cavity engages with an ejector mechanism to eject the product from the mold cavity during demolding, achieving automated demolding and reducing manual intervention. This invention effectively achieves precise molding and efficient demolding of injection-molded products, ensuring product integrity, improving injection molding production efficiency, and possessing high practical value. Attached Figure Description

[0021] Figure 1 This is one of the three-dimensional structural schematic diagrams disclosed in the embodiments of this utility model;

[0022] Figure 2 This is one of the disassembled three-dimensional structural diagrams disclosed in the embodiments of this utility model;

[0023] Figure 3 This is the second disassembled three-dimensional structural diagram disclosed in the embodiment of this utility model;

[0024] Figure 4 This is the third disassembled three-dimensional structural diagram disclosed in the embodiment of this utility model;

[0025] Figure 5 The embodiments disclosed herein Figure 4 A magnified schematic diagram of structure A in the middle.

[0026] In the diagram: 1. Base plate; 2. Elevator seat; 3. Lower mold base; 301. Mold cavity; 302. Ejector hole; 4. Upper mold base; 401. Guide groove; 5. Top plate; 6. Guide mechanism; 601. Sleeve rod; 602. Extension rod; 7. Injection hole; 8. Mold core; 801. Molding chamber; 802. Angled block; 803. Sliding hole; 9. Separation mechanism; 901. Tension spring; 902. Guide rod; 10. Ejector mechanism; 1001. Ejector rod; 1002. Cylinder; 11. Mounting hole. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-5 This utility model provides a technical solution: an injection mold for easy demolding, including a base plate 1, four riser seats 2 installed on the top of the base plate 1, a lower mold base 3 installed on the top of the riser seats 2, a mold cavity 301 opened on the top of the lower mold base 3, a pair of mold cores 8 provided at the bottom of the interior of the mold cavity 301, a separation mechanism 9 for separating the pair of mold cores 8 installed on both sides of the interior of the mold cavity 301, a molding chamber 801 opened on the adjacent sides of the pair of mold cores 8, and inclined blocks 802 installed on both sides of the top of the mold cores 8. An upper mold base 4 is provided on the top of the lower mold base 3, and the top of the upper mold base 4... The mold base 4 is equipped with a top plate 5 and a pair of guide grooves 401 at its bottom. The top sides of the guide grooves 401 are inclined. The outer side of the inclined block 802 is slidably connected to the inner side of the guide grooves 401. A pair of guide mechanisms 6 are installed on both sides of the top of the bottom plate 1. The top of the guide mechanism 6 is fixedly connected to the bottom of the top plate 5. The bottom of the mold cavity 301 has an ejection hole 302. An ejection mechanism 10 is installed inside the ejection hole 302. The bottom plate 1 provides a stable bearing base for the mold, supporting core components such as the riser 2 and the lower mold base 3, ensuring the stability of the injection molding process. The overall mold structure remains stable, ensuring product molding accuracy. Four riser seats 2 at the top of the base plate 1 elevate the lower mold base 3, providing installation and movement space for the ejector mechanism 10 and preventing interference between the ejector components and the ground. The mold cavity 301 at the top of the lower mold base 3 cooperates with the mold core 8 to form the basic space for product molding. The molding chamber 801 of the mold core 8 precisely matches the product shape, ensuring product molding quality. The separation mechanism 9 inside the mold cavity 301 pushes a pair of mold cores 8 apart during demolding, breaking the tight fit between the product and the mold cores 8 and preventing damage to the product during demolding. The inclined block 802 at the top of the mold core 8 cooperates with the guide groove 401 at the bottom of the upper mold base 4. When the upper mold base 4 closes the mold, the inclined surface of the guide groove 401 pushes the inclined block 802 to make the mold core 8 automatically close, ensuring that the mold core 8 is accurately positioned when the mold is closed. The guide mechanism 6 on both sides of the base plate 1 connects to the top plate 5, guiding the upper mold base 4 to close and open the mold in the vertical direction, avoiding the upper mold base 4 from shifting, which may cause mold damage or product misalignment. The ejection hole 302 at the bottom of the mold cavity 301 cooperates with the ejection mechanism 10 to eject the product from the mold cavity 301 during demolding, realizing automated demolding and reducing manual intervention.

[0029] The separation mechanism 9 includes a tension spring 901. One end of the tension spring 901 is fixedly connected to the inner side of the mold cavity 301, and the other end of the tension spring 901 is fixedly connected to the outer side of the mold core 8. The tension spring 901 in the separation mechanism 9 connects the inner side of the mold cavity 301 and the outer side of the mold core 8. When the mold is opened, the elastic tension of the tension spring 901 pulls the two mold cores 8 to separate outward, so that the product is separated from the inner wall of the molding chamber 801 of the mold core 8, avoiding the product from being difficult to demold due to being tightly stuck to the mold core 8.

[0030] The mold core 8 has a sliding hole 803 on one side of its top end. A guide rod 902 is slidably connected to the inside of the sliding hole 803. The two ends of the guide rod 902 are fixedly connected to the inside sides of the mold cavity 301, respectively. Through the sliding hole 803 on one side of the top end of the mold core 8 and the guide rod 902 slidingly engaged, the guide rod 902 is fixed to the inside sides of the mold cavity 301, restricting the mold core 8 to move horizontally only along the direction of the guide rod 902, and preventing the mold core 8 from shifting or tilting when it separates or comes together.

[0031] The guiding mechanism 6 includes a sleeve rod 601, the bottom end of which is fixedly connected to the top end of the base plate 1. An extension rod 602 is slidably connected to the inner side of the sleeve rod 601, the top end of which is fixedly connected to the bottom end of the top plate 5. A spring is installed at the bottom end of the extension rod 602, and the bottom end of the spring is fixedly connected to the inner bottom end of the sleeve rod 601. The sleeve rod 601 in the guiding mechanism 6 is fixed to the top end of the base plate 1, providing stable sliding support for the extension rod 602. Through the sliding cooperation between the extension rod 602 and the sleeve rod 601, the top plate 5 and the upper mold base 4 are guided to move in the vertical direction, ensuring that the upper mold base 4 accurately aligns with the lower mold base 3 when the mold is closed, avoiding damage caused by misalignment of the mold. Through the spring at the bottom end of the extension rod 602, the elastic force of the spring pushes the extension rod 602 upward to reset when the mold is opened, assisting the upper mold base 4 to open automatically, reducing the power requirement for mold opening, and buffering the impact force when the mold is closed, avoiding damage to mold components due to hard collisions, and extending the service life of the mold.

[0032] The ejection mechanism 10 includes an ejector rod 1001, which slides and seals against the outer side of the ejector rod 1001 and the inner side of the ejection hole 302. A cylinder 1002 is installed at the top center of the base plate 1, and the output end of the cylinder 1002 is fixedly connected to the bottom end of the ejector rod 1001. The sliding and sealing fit between the ejector rod 1001 and the ejection hole 302 in the ejection mechanism 10 ensures the sealing of the mold cavity 301 during injection molding and prevents molten plastic from leaking from the ejection hole 302. The cylinder 1002 at the top of the base plate 1 provides automated power to the ejector rod 1001. During demolding, the cylinder 1002 pushes the ejector rod 1001 upward along the ejection hole 302, smoothly ejecting the product from the mold cavity 301, replacing manual demolding and improving demolding efficiency.

[0033] The top plate 5 has an injection hole 7 at the center of its top end. One end of the injection hole 7 extends to the bottom end of the upper mold base 4. The injection hole 7 at the top of the top plate 5 extends to the bottom end of the upper mold base 4, providing a channel for the molten plastic to be injected into the mold cavity 301.

[0034] Mounting holes 11 are provided at the top four corners of the base plate 1 and the bottom four corners of the top plate 5. Through the mounting holes 11 at the four corners of the base plate 1 and the top plate 5, the mold is firmly installed on the worktable and pressing mechanism of the injection molding machine using bolts to prevent the mold from shifting as a whole due to vibration and pressure during the injection process.

[0035] Specifically, the working principle of this easy-to-demold injection mold is as follows: During use, the base plate 1 provides a stable bearing foundation for the mold, supporting core components such as the riser 2 and lower mold base 3, ensuring that the overall structure of the mold does not shift during injection molding and guaranteeing product molding accuracy; the four riser 2 at the top of the base plate 1 raise the lower mold base 3, providing installation and movement space for the ejection mechanism 10 and avoiding interference between the ejection component and the ground; the mold cavity 301 at the top of the lower mold base 3 cooperates with the mold core 8 to form the basic space for product molding, and the molding chamber 801 of the mold core 8 precisely matches the product shape, ensuring product molding quality; the separation mechanism 9 inside the mold cavity 301 pushes a... Separating the mold core 8 breaks the tight fit between the product and the mold core 8, preventing damage to the product during demolding. The inclined block 802 at the top of the mold core 8 engages with the guide groove 401 at the bottom of the upper mold base 4. When the upper mold base 4 closes, the inclined surface of the guide groove 401 pushes the inclined block 802, causing the mold core 8 to automatically close, ensuring accurate positioning of the mold core 8 during mold closing. The guide mechanisms 6 on both sides of the base plate 1 connect to the top plate 5, guiding the upper mold base 4 to close and open vertically, preventing mold damage or product misalignment due to upper mold base 4 displacement. The ejector hole 302 at the bottom of the mold cavity 301 engages with the ejector mechanism 10, ejecting the product from the mold cavity 301 during demolding, achieving automated demolding and reducing manual intervention. The inner side of the mold cavity 301 is connected to the outer side of the mold core 8 by a tension spring 901 in the separation mechanism 9. When the mold opens, the elastic tension of the tension spring 901 pulls the mold cores 8 on both sides to separate outward, so that the product separates from the inner wall of the molding cavity 801 of the mold core 8, avoiding the product from being difficult to demold due to tight adhesion to the mold core 8. The guide rod 902 is slidably engaged with the sliding hole 803 at the top of one side of the mold core 8. The guide rod 902 is fixed inside the mold cavity 301 on both sides, restricting the mold core 8 to move horizontally only along the direction of the guide rod 902, avoiding the offset or tilting when the mold core 8 separates or comes together. The extension rod 601 in the guide mechanism 6 is fixed to the top of the base plate 1, providing stable sliding support for the extension rod 602. The extension rod 602 slides with the sleeve rod 601 to guide the top plate 5 and the upper mold base 4 to move vertically, ensuring that the upper mold base 4 accurately aligns with the lower mold base 3 when the mold is closed, thus avoiding damage caused by misalignment of the mold. The spring at the bottom of the extension rod 602 pushes the extension rod 602 upward to reset when the mold is opened, assisting the upper mold base 4 to open automatically, reducing the power requirement for mold opening, and buffering the impact force when the mold is closed, thus preventing damage to the mold components due to hard collisions and extending the service life of the mold. The ejector rod 1001 in the ejection mechanism 10 slides and seals with the ejection hole 302 to ensure the sealing of the mold cavity 301 during injection, preventing molten plastic from leaking from the ejection hole 302.The cylinder 1002 at the top of the base plate 1 provides automated power to the ejector rod 1001. During demolding, the cylinder 1002 pushes the ejector rod 1001 upward along the ejection hole 302, smoothly ejecting the product from the mold cavity 301, replacing manual demolding and improving demolding efficiency. The injection hole 7 at the top of the top plate 5 extends to the bottom of the upper mold base 4, providing a channel for molten plastic to be injected into the mold cavity 301. Through the mounting holes 11 at the four corners of the base plate 1 and the top plate 5, bolts are used to firmly install the mold on the worktable and pressing mechanism of the injection molding machine, preventing the mold from shifting as a whole due to vibration and pressure during the injection process. This utility model can effectively achieve precise molding and efficient demolding of injection molded products, ensure product integrity, improve injection molding production efficiency, and has high practical value.

Claims

1. An injection mold that facilitates demolding, characterized in that, The system includes a base plate (1), four riser seats (2) are installed on the top of the base plate (1), a lower mold base (3) is installed on the top of the riser seats (2), a mold cavity (301) is opened on the top of the lower mold base (3), a pair of mold cores (8) are provided at the bottom of the interior of the mold cavity (301), a separation mechanism (9) for separating the pair of mold cores (8) is installed on both sides of the interior of the mold cavity (301), a molding chamber (801) is opened on the adjacent sides of the pair of mold cores (8), and a wedge (802) is installed on both sides of the top of the mold cores (8). An upper mold base is provided on the top of the lower mold base (3). (4) A top plate (5) is installed on the top of the upper mold base (4). A pair of guide grooves (401) are opened at the bottom of the upper mold base (4). The two sides of the top of the guide groove (401) are inclined. The outer side of the inclined block (802) and the inner side of the guide groove (401) are slidably connected. A pair of guide mechanisms (6) are installed on both sides of the top of the bottom plate (1). The top of the guide mechanism (6) and the bottom of the top plate (5) are fixedly connected. An ejection hole (302) is opened at the bottom of the mold cavity (301). An ejection mechanism (10) is provided inside the ejection hole (302).

2. The injection mold for easy demolding according to claim 1, characterized in that, The separation mechanism (9) includes a tension spring (901), one end of which is fixedly connected to the inner side of the mold cavity (301), and the other end of which is fixedly connected to the outer side of the mold core (8).

3. The injection mold for easy demolding according to claim 2, characterized in that, Each of the top sides of the mold core (8) is provided with a sliding hole (803), and a guide rod (902) is slidably connected to the inner side of the sliding hole (803). The two ends of the guide rod (902) are respectively fixedly connected to the inner sides of the mold cavity (301).

4. The injection mold for easy demolding according to claim 1, characterized in that, The guide mechanism (6) includes a sleeve rod (601), the bottom end of which is fixedly connected to the top end of the base plate (1), an extension rod (602) is slidably connected to the inner side of the sleeve rod (601), the top end of which is fixedly connected to the bottom end of the top plate (5), a spring is installed at the bottom end of the extension rod (602), and the bottom end of the spring is fixedly connected to the inner bottom end of the sleeve rod (601).

5. The injection mold for easy demolding according to claim 1, characterized in that, The ejection mechanism (10) includes an ejector rod (1001), the outer side of the ejector rod (1001) and the inner side of the ejection hole (302) are slidably sealed together, and a cylinder (1002) is installed at the top center of the base plate (1), and the output end of the cylinder (1002) is fixedly connected to the bottom end of the ejector rod (1001).

6. The injection mold for easy demolding according to claim 1, characterized in that, The top plate (5) has an injection hole (7) at the center of its top end, and one end of the injection hole (7) extends to the bottom end of the upper mold base (4).

7. The injection mold for easy demolding according to claim 1, characterized in that, Mounting holes (11) are provided at the top four corners of the base plate (1) and the bottom four corners of the top plate (5).

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