Rice bucket injection mold convenient to demold

Abstract

The utility model discloses a rice bucket injection mold convenient to demold, which comprises a transverse plate seat, a fixed lower mold and a movable upper mold, and an injection molding cavity is formed between the movable upper mold and the fixed lower mold; a cavity is formed in the center of the interior of the fixed lower mold, a movable inner core is arranged in the cavity, an annular groove is formed in the top of the inner side of the cavity, an air pump is arranged at the bottom of a transverse plate base on one side of the box body, the output end of the air pump is connected with an air injection pipe in parallel, and the other end of the air injection pipe is connected with an air flow channel formed in the fixed lower mold. The movable inner core is arranged in the fixed lower die, the bottom of the movable inner core is connected with the connecting rod and the attraction piece, and the movable inner core can move downwards to expose the annular groove while the movable upper die moves upwards in cooperation with the attraction effect of the electromagnet. By means of the design, the air pump can inject air into the cavity through the air injection pipe and the air flow channel, and therefore rapid separation of a product and the lower die is achieved.

Description

TECHNICAL FIELD

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

[0002] In the production field of plastic products, injection mold is a widely used forming tool. For the production of rice bucket and other plastic products, the performance of injection mold directly affects the quality, production efficiency and production cost of products.

[0003] At present, the traditional rice bucket injection mold has many problems in the demolding process. On the one hand, the demolding efficiency is low. The traditional mold mostly adopts manual or mechanical forced demolding mode, which needs to consume a lot of manpower and time, especially for the rice bucket with complex shape, the demolding process is often more difficult, which leads to the extension of production cycle and low production efficiency. On the other hand, the product quality is difficult to guarantee. When the product is forced to demold manually or mechanically, the friction between the product and the mold is large, which is easy to cause the quality problems such as surface scratch or deformation of the product, which seriously affects the appearance and use performance of the product. Moreover, the traditional demolding mode cannot guarantee the uniform stress of the product, which may cause local damage of the product in the demolding process, further reducing the qualified rate of the product. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a rice bucket injection mold convenient to demold to solve the problems in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rice bucket injection mold convenient to demold, which comprises a horizontal plate seat, a fixed lower mold and a movable upper mold, the center of the bottom of the horizontal plate seat is provided with a box body, the top of the horizontal plate seat is provided with the fixed lower mold through a supporting plate, the upper side of the fixed lower mold is provided with the movable upper mold, and the movable upper mold and the fixed lower mold form an injection cavity;

[0006] The two ends of the horizontal plate seat are respectively fixed with support frame one and support frame two through bolts, the inner sides of the support frame one and the support frame two are provided with strip grooves, the bottom of the inner side of the strip groove is provided with a telescopic cylinder, the output end of the telescopic cylinder is connected with a horizontal plate frame, and the other end of the horizontal plate frame is fixedly connected with the side wall of the movable upper mold;

[0007] The center of the inside of the fixed lower mold is provided with a cavity, the inside of the cavity is provided with a movable inner core, the bottom end of the inside of the cavity is provided with a spring connected with the movable inner core, the bottom of the movable inner core of the inner side of the spring is provided with a connecting rod, the other end of the connecting rod extends to the inside of the box body and is provided with a suction sheet, and the inside bottom end of the box body below the suction sheet is provided with an electromagnet;

[0008] The top of the cavity is provided with an annular groove, the bottom of the lateral plate seat on one side of the box body is provided with an air pump, the output end of the air pump is connected with an air injection pipe, and the other end of the air injection pipe is connected with the airflow channel arranged in the fixed lower mold.

[0009] Preferably, the center of the top of the movable upper mold is provided with an injection hole, and the bottom of the movable upper mold is provided with a butt joint hole at four corner positions.

[0010] Preferably, the top of the supporting plate is provided with a guide column body at a position corresponding to the butt joint hole, and the volume of the guide column body matches the volume of the butt joint hole.

[0011] Preferably, the center of the supporting plate and the lateral plate seat is provided with a hole for the connecting rod to pass through.

[0012] Preferably, the inner wall of the cavity is uniformly provided with a sliding groove, and the outer side of the movable inner core is provided with a sliding block at a position corresponding to the sliding groove.

[0013] Preferably, the outer side of the fixed lower mold is annularly provided with a groove structure with a sealing gasket at the edge position of the top of the supporting plate.

[0014] Preferably, the distance from the annular groove to the opening of the cavity is the same as the distance from the suction sheet to the electromagnet, so that when the suction sheet is adsorbed by the electromagnet, the annular groove is in communication with the cavity.

[0015] The utility model relates to a rice bucket injection mold convenient to demould, compared with prior art, has remarkable technical advantage and positive effect, and the specific is as follows:

[0016] 1. improve demolding efficiency:

[0017] By arranging the movable inner core in the fixed lower mold and connecting the connecting rod and the suction sheet at the bottom of the movable inner core, cooperating with the adsorption of the electromagnet, the movable inner core can be moved downward while the movable upper mold is moved upward, and the annular groove is exposed. This design enables the air pump to inject gas into the cavity through the air injection pipe and the airflow channel, thereby realizing the rapid separation of the product and the lower mold. Compared with the manual or mechanical forced demolding mode of the traditional mold, the utility model significantly improves the demolding efficiency and reduces the production cycle.

[0018] 2. improve product quality:

[0019] Due to the adoption of the gas injection assisted demolding mode, the contact area and friction force between the product and the mold are greatly reduced, the surface scratching or deformation problem caused by mechanical force is avoided, and the surface quality and overall precision of the product are improved. In addition, the design of the annular groove ensures uniform distribution of gas, further ensuring uniform stress and complete demolding of the product.

[0020] 3. Reducing energy consumption and cost:

[0021] The use of electromagnet and air pump reduces the mechanical force and energy consumption required in the traditional demolding process. The adsorption of electromagnet and the gas injection of air pump are efficient and low-energy operation modes, which not only reduce energy consumption, but also reduce equipment wear and maintenance cost, thereby reducing overall production cost.

[0022] 4. Enhancing the versatility and stability of the mold:

[0023] The design of the injection molding cavity between the movable upper mold and the fixed lower mold, combined with the precise matching of the guide column and the butt joint hole, makes the mold more convenient and stable during installation and disassembly. The volume matching of the guide column and the butt joint hole ensures the precise positioning of the mold components, improving the versatility and service life of the mold.

[0024] 5. Optimizing the mold structure and improving the operation convenience:

[0025] The ingenious combination of the horizontal plate seat, support frame, telescopic air cylinder and horizontal plate frame makes the movement of the movable upper mold more stable and controllable. The design of the strip-shaped groove and telescopic air cylinder not only enhances the overall stability of the mold, but also makes the operation process more simple. In addition, the application of the sliding groove and sliding block further optimizes the movement trajectory of the movable inner core, reduces the friction resistance and improves the operation convenience.

[0026] 6. Significant environmental effect:

[0027] Through efficient demolding and reducing the use of mechanical force, the utility model reduces energy consumption, noise and waste generation during production, in line with the green and environmentally friendly production concept. In addition, the gas injection assisted demolding method reduces the use of demolding agent and reduces chemical pollution.

[0028] 7. Technological innovation:

[0029] The utility model provides a new technical concept, through multiple technical innovations such as electromagnet adsorption and gas injection, solves the problems of low demolding efficiency and unstable product quality of traditional injection mold, represents the new development trend of injection mold technology.

[0030] In summary, the utility model has significant technical advantages and positive effects in improving demolding efficiency, improving product quality, reducing energy consumption and cost, enhancing the versatility and stability of the mold, optimizing the mold structure, improving the operation convenience and environmental effect, and has wide application prospect and market value. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.

[0032] Figure 1 It is an overall internal structure schematic view of the present application;

[0033] Figure 2 It is a fixed lower die internal structure schematic view of the present application;

[0034] Figure 3 It is an upper and lower die structure schematic view of the present application;

[0035] Figure 4 It is a support frame side view structure schematic view of the present application;

[0036] Figure 5 It is a fixed lower die top view structure schematic view of the present application;

[0037] In the figure: 1, horizontal plate seat; 2, support frame one; 3, spring; 4, movable upper die; 5, airflow channel; 6, movable inner core; 7, injection molding hole; 8, injection molding cavity; 9, fixed lower die; 10, strip-shaped groove; 11, horizontal plate frame; 12, telescopic air cylinder; 13, support frame two; 14, supporting plate; 15, air pump; 16, electromagnet; 17, suction piece; 18, air injection pipe; 19, butt joint hole; 20, guide column body; 21, box body; 22, hole; 23, sliding block; 24, annular groove; 25, cavity; 26, sliding groove; 27, connecting rod. DETAILED DESCRIPTION

[0038] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0039] Please refer to Figures 1-5 The present application provides an embodiment: a rice bucket injection mold convenient for demolding, comprising a horizontal plate seat 1, a fixed lower die 9 and a movable upper die 4, a box body 21 is arranged at the center of the bottom of the horizontal plate seat 1, a fixed lower die 9 is arranged on the top of the horizontal plate seat 1 through a supporting plate 14, a movable upper die 4 is arranged above the fixed lower die 9, and an injection molding cavity 8 is formed between the movable upper die 4 and the fixed lower die 9.

[0040] A groove structure with a sealing gasket is provided in a ring at the top edge of the support plate 14 on the outer side of the fixed lower mold 9.

[0041] The upper part of the movable mold 4 has an injection hole 7 at the center of its top, and four corners of its bottom have mating holes 19.

[0042] Guide pillars 20 are provided at the top of the tray 14 at the positions corresponding to the docking holes 19, and the volume of the guide pillars 20 matches the volume of the docking holes 19.

[0043] The horizontal plate base 1 is the basic support component of the mold, and a box 21 is set at the center of its bottom. The box 21 is mainly used to accommodate, support and fix the lower mold 9, ensuring the overall stability of the mold. The material of the horizontal plate base 1 is preferably high-strength steel to withstand the high pressure and high temperature during the injection molding process.

[0044] The lower mold 9 is fixed to the top of the horizontal plate seat 1 by a support plate 14. The support plate 14 not only supports the lower mold 9 but also provides additional structural stability. On the outer side of the lower mold 9, at the top edge of the support plate 14, a groove structure with a sealing gasket is provided in a ring. This sealing gasket is mainly used to prevent leakage of molten plastic during injection molding and to ensure the sealing performance of the mold.

[0045] The movable upper mold 4 is located above the fixed lower mold 9, forming an injection cavity 8 between them. The shape of the injection cavity 8 matches the shape of the rice bucket, ensuring that the injection-molded rice bucket has accurate dimensions and a smooth surface. An injection hole 7 is provided at the top center of the movable upper mold 4 for injecting molten plastic. The design of the injection hole 7 should ensure smooth plastic flow and avoid the generation of air bubbles and defects.

[0046] The movable upper mold 4 has a mating hole 19 at each of its four corners at the bottom, which mates with the guide post 20 on the top of the support plate 14. The top of the support plate 14 also has a guide post 20 at the corresponding position of the mating hole 19, and the volume of the guide post 20 matches the volume of the mating hole 19. This design ensures precise alignment of the movable upper mold 4 during opening and closing, avoiding mold damage or product quality issues caused by misalignment.

[0047] The two ends of the horizontal plate seat 1 are respectively fixed with support frame 1 2 and support frame 2 13 by bolts. The inner side of support frame 1 2 and support frame 2 13 are provided with strip groove 10. The bottom of the inner side of the strip groove 10 is equipped with telescopic cylinder 12. The output end of telescopic cylinder 12 is connected to horizontal plate frame 11, and the other end of horizontal plate frame 11 is fixedly connected to the side wall of movable upper mold 4.

[0048] The horizontal plate seat 1 is the basic component of the device, which is made of high-strength steel to ensure the stability and durability of the overall structure. The two ends of the horizontal plate seat 1 are provided with mounting holes for fixing the support frame one 2 and the support frame two 13 through bolts.

[0049] The support frame one 2 and the support frame two 13 are made of the same high-strength steel as the horizontal plate seat 1, and their structure design is reasonable, which can effectively disperse and bear the weight and pressure of the horizontal plate frame 11 and the movable upper die 4. The inner side of the support frame one 2 and the support frame two 13 is provided with a strip-shaped groove 10, and the width of the strip-shaped groove 10 is moderate to facilitate the sliding and positioning of the horizontal plate frame 11.

[0050] The strip-shaped groove 10 is located on the inner side of the support frame one 2 and the support frame two 13, and the bottom is smooth to ensure smooth sliding of the horizontal plate frame 11. The length of the strip-shaped groove 10 is designed according to the actual use requirements, which can meet the needs of the horizontal plate frame 11 in different positions.

[0051] The telescopic air cylinder 12 is installed at the bottom of the inner side of the strip-shaped groove 10 and connected with the support frame one 2 and the support frame two 13 through fixing bolts. The telescopic air cylinder 12 selects high-precision and high-reliability pneumatic components, and its output end is connected with the horizontal plate frame 11 through a connecting piece. The telescopic air cylinder 12 realizes the telescopic movement of the horizontal plate frame 11 through the compression and release of gas, thereby adjusting the position of the movable upper die 4.

[0052] The horizontal plate frame 11 is made of light weight and high strength material, and its structure design is reasonable, which can maintain good rigidity while bearing large pressure. One end of the horizontal plate frame 11 is connected with the output end of the telescopic air cylinder 12, and the other end is fixedly connected with the side wall of the movable upper die 4. Through the driving of the telescopic air cylinder 12, the horizontal plate frame 11 can slide in the strip-shaped groove 10, thereby driving the movable upper die 4 to move up and down.

[0053] The movable upper die 4 is one of the key components of the device, and its side wall is fixedly connected with the horizontal plate frame 11. The material and structure of the movable upper die 4 are designed according to the actual use requirements, which can meet the use requirements under different working conditions.

[0054] The center of the fixed lower die 9 is provided with a cavity 25, and the cavity 25 is provided with a movable inner core 6. The bottom end of the cavity 25 is provided with a spring 3 connected with the movable inner core 6. The bottom of the movable inner core 6 inside the spring 3 is provided with a connecting rod 27, and the other end of the connecting rod 27 extends into the inside of the box body 21 and is provided with a suction sheet 17. The inside of the box body 21 below the suction sheet 17 is provided with an electromagnet 16.

[0055] The distance from the annular groove 24 to the opening of the cavity 25 is the same as the distance from the suction sheet 17 to the electromagnet 16, so that when the suction sheet 17 and the electromagnet 16 are adsorbed, the annular groove 24 and the cavity 25 are communicated.

[0056] The center of the fixed lower die 9 is provided with a cavity 25.

[0057] The center of the fixed lower die 9 is provided with a cavity 25.

[0058] The bottom of the movable inner core 6 is provided with a connecting rod 27, one end of the connecting rod 27 is fixedly connected with the bottom of the movable inner core 6, and the other end extends to the inside of the box body 21.

[0059] The annular groove 24 is located outside the fixed lower die 9, and the distance from the annular groove 24 to the opening of the cavity 25 is the same as the distance from the suction sheet 17 to the electromagnet 16.

[0060] The center of the fixed lower die 9 is provided with a cavity 25.

[0061] The top of the inside of the cavity 25 is provided with an annular groove 24, the bottom of the lateral plate seat 1 on one side of the box body 21 is provided with an air pump 15, the output end of the air pump 15 is connected with a gas injection pipe 18 in parallel, the other end of the gas injection pipe 18 is connected with the gas flow channel 5 arranged inside the fixed lower die 9, and the other end of each gas flow channel 5 extends to the inside of the annular groove 24.

[0062] The inner wall of the cavity 25 is uniformly provided with a sliding groove 26, and the outer side of the movable inner core 6 is provided with a sliding block 23 corresponding to the position of the sliding groove 26.

[0063] The air pump 15 is selected from a high-efficiency and low-noise type to ensure that it can provide stable and continuous airflow during operation. The output end of the air pump 15 is connected with the gas injection pipe 18 in parallel, and the gas injection pipe 18 is made of a pressure-resistant and corrosion-resistant material to ensure that it will not be broken or aged during long-term use.

[0064] The other end of the air injection pipe 18 is connected with the air flow channel 5 arranged inside the fixed lower mold 9 respectively. The other end of each air flow channel 5 extends to the inside of the annular groove 24, ensuring that the air flow can be uniformly distributed to each part of the annular groove 24. The design of the air flow channel 5 should ensure that the air flow is unobstructed, avoiding air flow obstruction caused by narrow or excessively curved channels.

[0065] The inner wall of the cavity 25 is uniformly provided with a sliding groove 26, and the depth and width of the sliding groove 26 are designed according to the size of the movable inner core 6, so as to ensure that the movable inner core 6 can smoothly slide in the sliding groove 26. The number and distribution of the sliding grooves 26 should be optimized according to the actual application requirements to ensure the stability of the movable inner core 6 in the cavity 25.

[0066] The outer side of the movable inner core 6 is provided with a sliding block 23 at a position corresponding to the sliding groove 26. The sliding block 23 is made of wear-resistant and low-friction material to reduce friction when sliding in the sliding groove 26 and improve the moving efficiency of the movable inner core 6. The size and shape of the sliding block 23 should be designed according to the size of the sliding groove 26 to ensure that it can be tightly matched with the sliding groove 26.

[0067] In the working process, after the air pump 15 is started, the air flow is delivered to the air flow channel 5 inside the fixed lower mold 9 through the air injection pipe 18, and the air flow enters the annular groove 24 through the air flow channel 5 and forms uniform air flow distribution in the annular groove 24.

[0068] When the embodiment of the present application is used,

[0069] Mold clamping preparation

[0070] Mold installation: Place the cross plate seat 1 in a suitable working position, and fix the support frame one 2 and the support frame two 13 on both ends of the cross plate seat 1 respectively through bolts. Check whether the cross plate seat 1 is stable to ensure that it can withstand the pressure in the injection molding process.

[0071] Part inspection: Check whether the telescopic air cylinder 12 is installed at the bottom inside the strip-shaped groove 10 and firmly connected with the cross plate frame 11; confirm that the movable upper mold 4 is fixedly connected with the cross plate frame 11, and that the butt joint hole 19 at the bottom of the movable upper mold 4 can be accurately aligned with the guide column body 20 on the supporting plate 14; check whether the spring 3, the connecting rod 27, the suction piece 17, the electromagnet 16 and other components are installed correctly and have no damage; check whether the connection of the air pump 15, the air injection pipe 18 and the air flow channel 5 is tight and has no air leakage phenomenon.

[0072] Initial state adjustment: Ensure that the telescopic air cylinder 12 is in the elongated state, so that the movable upper mold 4 is separated from the fixed lower mold 9 by a certain distance; the electromagnet 16 is in the off state, the movable inner core 6 is in the upper position in the cavity 25 under the action of the spring 3, and the annular groove 24 is not connected with the cavity 25.

[0073] Mold closing process

[0074] Extension cylinder activation: The control system of the extension cylinder 12 is activated, causing the output end to retract, which pushes the crossbar frame 11 to slide downward within the bar-shaped groove 10.

[0075] Movable upper mold descent: The crossbar frame 11 moves the movable upper mold 4 downward, and the bottom of the movable upper mold 4 descends precisely along the guide cylinder 20 until the movable upper mold 4 tightly fits the fixed lower mold 9, forming a sealed injection molding cavity 8. At this time, the groove structure with a sealing gasket ensures that molten plastic does not leak during the injection molding process.

[0076] Injection molding process

[0077] Injection of molten plastic: Molten plastic is injected into the injection molding cavity 8 through the injection hole 7 using an injection molding device. During the injection molding process, the injection pressure and speed are controlled to ensure that the plastic uniformly fills the entire injection molding cavity 8, avoiding the formation of bubbles and defects.

[0078] Pressure holding and cooling: After the injection molding is completed, a certain pressure is maintained for a period of time to allow the plastic to fully form within the cavity. At the same time, the mold is cooled through the mold cooling system to accelerate the solidification of the plastic.

[0079] Demolding preparation

[0080] Movable upper mold ascent: After the injection molded product cools and forms, the output end of the extension cylinder 12 is controlled to extend, causing the crossbar frame 11 to slide upward within the bar-shaped groove 10, thereby moving the movable upper mold 4 upward and separating it from the fixed lower mold 9.

[0081] Electromagnet energization: At the same time as the movable upper mold 4 ascends, the electromagnet 16 is energized, generating a magnetic force that attracts the suction piece 17. The suction piece 17, through the connecting rod 27, moves the movable inner core 6 downward against the spring force of the spring 3. Since the distance from the annular groove 24 to the opening of the cavity 25 is the same as the distance from the suction piece 17 to the electromagnet 16, when the suction piece 17 is attracted to the electromagnet 16, the annular groove 24 is connected to the cavity 25.

[0082] Demolding process

[0083] Air pump activation: The air pump 15 is activated, and the air pump 15 delivers air flow through the air injection pipe 18 to the air flow channel 5 inside the fixed lower mold 9.

[0084] Gas injection demolding: The air flow enters the annular groove 24 through the air flow channel 5 and forms a uniform air flow distribution within the annular groove 24, then enters the cavity 25. The pressure of the gas acts on the bottom of the injection molded product, causing the product to quickly separate from the fixed lower mold 9, completing the demolding process.

[0085] Resetting process

[0086] The electromagnetic iron is powered off: after the demolding is completed, the power supply of the electromagnetic iron 16 is turned off, the electromagnetic iron 16 loses the magnetic force, the movable inner core 6 is reset upward under the elastic force of the spring 3, returns to the initial position, and the annular groove 24 and the cavity 25 are disconnected again.

[0087] The movable upper die is reset: the telescopic cylinder 12 is controlled to drive the movable upper die 4 to rise to the initial separation position, so as to prepare for the next injection molding.

[0088] Product taking out and mold cleaning

[0089] The product is taken out: the rice bucket product after demolding is taken out from the mold by using a tool, and the quality of the product is checked, such as whether there is a defect in appearance, whether the size meets the requirements, etc.

[0090] The mold is cleaned: the plastic and impurities remaining on the surface of the mold and the cavity are cleaned, whether each part of the mold is damaged or worn is checked, and timely maintenance and replacement are performed if necessary, so as to prepare for the next injection molding production.

[0091] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0092] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0093] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0094] The above is only a preferred embodiment of the present application and does not limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rice bucket injection mold for easy demolding, comprising a horizontal plate base (1), a fixed lower mold (9), and a movable upper mold (4), characterized in that: A box (21) is provided at the center of the bottom of the horizontal plate seat (1), and a fixed lower mold (9) is provided at the top of the horizontal plate seat (1) through a support plate (14). A movable upper mold (4) is provided above the fixed lower mold (9), and an injection cavity (8) is formed between the movable upper mold (4) and the fixed lower mold (9). The two ends of the horizontal plate base (1) are respectively fixed with support frame one (2) and support frame two (13) by bolts. The inner sides of support frame one (2) and support frame two (13) are provided with strip grooves (10). A telescopic cylinder (12) is installed at the bottom of the inner side of the strip groove (10). The output end of the telescopic cylinder (12) is connected to the horizontal plate frame (11), and the other end of the horizontal plate frame (11) is fixedly connected to the side wall of the movable upper mold (4). The fixed lower mold (9) has a cavity (25) in the center, and a movable inner core (6) is provided inside the cavity (25). A spring (3) connected to the movable inner core (6) is provided at the bottom of the cavity (25). A connecting rod (27) is provided at the bottom of the movable inner core (6) inside the spring (3). The other end of the connecting rod (27) extends into the box (21) and is provided with a suction piece (17). An electromagnet (16) is installed at the bottom of the box (21) below the suction piece (17). An annular groove (24) is provided on the top of the inner side of the cavity (25). An air pump (15) is provided at the bottom of the horizontal plate seat (1) on one side of the box body (21). An air injection pipe (18) is connected in parallel to the output end of the air pump (15). The other end of the air injection pipe (18) is connected to the airflow channel (5) provided inside the fixed lower mold (9). The other end of each airflow channel (5) extends into the interior of the annular groove (24).

2. The rice bucket injection mold for easy demolding according to claim 1, characterized in that: The upper movable mold (4) has an injection hole (7) at the center of its top, and four corners of its bottom are provided with mating holes (19).

3. The rice bucket injection mold for easy demolding according to claim 1, characterized in that: Each of the top of the tray (14) is provided with a guide post (20) at the position corresponding to the docking hole (19), and the volume of the guide post (20) matches the volume of the docking hole (19).

4. The rice bucket injection mold for easy demolding according to claim 1, characterized in that: Both the tray (14) and the cross plate seat (1) have holes (22) at their centers for the connecting rod (27) to pass through.

5. The rice bucket injection mold for easy demolding according to claim 1, characterized in that: The inner wall of the cavity (25) is uniformly provided with grooves (26), and the movable inner core (6) is provided with sliders (23) at the positions corresponding to the grooves (26) on the outer side.

6. The rice bucket injection mold for easy demolding according to claim 1, characterized in that: The top edge of the support plate (14) on the outer side of the fixed lower mold (9) is provided with a groove structure with a sealing gasket.

7. The rice bucket injection mold for easy demolding according to claim 1, characterized in that: The distance from the annular groove (24) to the opening of the cavity (25) is the same as the distance from the attracting piece (17) to the electromagnet (16), so that when the attracting piece (17) and the electromagnet (16) are attracted, the annular groove (24) and the cavity (25) are connected.

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