Quick-release mechanism for powder molding machine

Abstract

The utility model relates to the technical field of mould -releasing of forming machine, and disclose a quick mould -releasing mechanism for powder forming machine, including the forming machine main part, the inside of forming machine main part includes the female die and male die, one side of forming machine main part is provided with the support platform, and the top surface of support platform is provided with the anti -sticking die assembly that lubricates female die inner wall, the top surface of support platform still is provided with the material pushing assembly that pushes the finished product after mould -releasing, this utility is through setting up anti -sticking die assembly, utilizes the rotary nozzle that can extend into female die inside, can even, fully spray in female die inner wall with the release agent, forms the effective isolation film, this not only significantly reduced the adhesion between powder and mould and the demoulding resistance, makes the demoulding process smooth and fast, has improved the demoulding efficiency, has avoided the quality problem such as product defect, crack etc. that the product is caused because of sticking to the mould or the unsmooth demoulding simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of demolding technology for molding machines, and more specifically to a rapid demolding mechanism for powder molding machines. Background Technology

[0002] Powder molding machines are core equipment used to press powdered materials such as metals, ceramics, and plastics into blanks of specific shapes. Their working process typically includes three basic stages: filling, pressing, and demolding. Among these, the demolding stage is the key factor that determines product quality, production efficiency, and mold life.

[0003] A search revealed Chinese patent CN222370372U, which discloses an easy-demolding molding structure for a powder molding machine. The structure includes a mold frame, an upper mold assembly slidably connected to the mold frame, an upper mounting base, an upper punch that engages with an upper recess, and a lower mold assembly, including a lower mounting base. However, during the pressing process, the powder particles experience intense friction and compression against the mold wall under high pressure, resulting in significant static friction between the pressed blank and the mold wall. Existing ejection methods require instantaneous overcoming of this enormous static friction, leading to a sharp increase in ejection force at the initial demolding stage. This sudden and significant ejection force easily causes internal cracks or edge chipping in the pressed blank, making it difficult to guarantee the yield rate for green blanks with extremely low strength. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a rapid demolding mechanism for powder molding machines, so as to solve the problem that the huge ejection force in the background art can easily cause internal cracks or edge chipping of the pressed blank.

[0005] This utility model provides the following technical solution: a quick demolding mechanism for a powder molding machine, including a molding machine body, the interior of which includes a female mold and a male mold, a support platform is provided on one side of the molding machine body, and an anti-sticking mold assembly for lubricating the inner wall of the female mold is provided on the top surface of the support platform, and a material pushing assembly for pushing the finished product after demolding is also provided on the top surface of the support platform. The anti-sticking mold assembly includes a lead tube shell, the inside of which is provided with a receiving cavity, and a guide wheel is rotatably connected to the inside of the receiving cavity via a bearing seat. An injection tube is provided inside the receiving cavity, the injection tube passes over the guide wheel and is in contact with the guide wheel. A rotating nozzle is installed at one end of the injection tube near the lead tube shell, and a quick connector is installed at the other end of the injection tube away from the rotating nozzle.

[0006] As a further embodiment of this utility model, the rotating nozzle is located above the female mold, and a cylinder is installed on the top surface of the lead tube shell. The piston rod of the cylinder passes through the top surface of the lead tube shell and is fixedly connected with a clamp, which is sleeved on the surface of the injection tube.

[0007] As a further embodiment of this utility model, the pushing component includes a pushing block fixedly connected to one end of the lead tube shell near the main body of the molding machine. The pushing block is in contact with the top surface of the female mold. A ball screw linear module for pushing the pushing block is installed inside the support platform.

[0008] As a further embodiment of this utility model, the side of the pusher block away from the lead tube shell is provided with an arc-shaped groove for limiting the finished material.

[0009] As a further embodiment of this utility model, a powder injection shell is fixedly connected to one end of the lead tube shell away from the pusher block, a slider is fixedly connected to one side of the powder injection shell, and the slider is slidably connected to the guide rail inside the ball screw linear module. A powder injection pipe for conveying powder is installed on the top surface of the powder injection shell, and a quick connector is installed at the top end of the powder injection pipe.

[0010] As a further embodiment of this utility model, two wind-gathering shrouds are symmetrically fixedly connected to both sides of the inlet pipe shell, and a fan is installed at the opening end of one of the wind-gathering shrouds, with the airflow direction of the fan facing the inside of the inlet pipe shell.

[0011] As a further embodiment of this utility model, a waste powder hopper is fixedly connected to the top surface of the support platform by bolts, and the waste powder hopper is located on the side of the support platform close to the main body of the molding machine.

[0012] As a further embodiment of this utility model, the top surface of the support platform is symmetrically connected to two positioning rollers via bearing seats, and the top of both positioning rollers is flush with the bottom surface of the pusher block and the powder injection shell.

[0013] The technical effects and advantages of this utility model are as follows: 1. This utility model, by setting an anti-sticking mold component, utilizes a rotating nozzle that can extend into the interior of the female mold to evenly and comprehensively spray the release agent onto the inner wall of the female mold, forming an effective isolation film. This not only significantly reduces the adhesion between the powder and the mold and the demolding resistance, making the demolding process smooth and fast, and improving demolding efficiency; but also avoids quality problems such as product defects and cracks caused by sticking or poor demolding, and reduces scratching of the mold surface during the demolding process, effectively extending the service life of the mold.

[0014] 2. This utility model integrates powder injection, leveling, and material pushing functions, and is uniformly driven by a ball screw linear module. It can replenish the female mold through the powder injection pipe after demolding. Subsequently, the material pushing block can level the excess powder on the top surface of the female mold during the resetting process, ensuring consistent filling amount each time, guaranteeing the stability of the pressed blank weight, and pushing the scraped excess powder into the waste powder hopper for centralized recycling, which not only keeps the worktable clean, but also avoids material waste.

[0015] 3. This utility model accelerates the airflow inside the inlet tube shell when spraying the release agent by using a fan and a concentrator, which promotes the rapid drying and film formation of the release agent on the mold surface and shortens the production cycle waiting time. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the fan and wind-concentrating cover structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the support platform and powder receiving box structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the support platform and ball screw linear module structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the vertical cross-sectional structure of the lead-in shell of this utility model.

[0021] Figure 6 This is a schematic diagram of the inlet shell and powder injection shell structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Molding machine body; 2. Support platform; 3. Inlet pipe shell; 4. Pushing block; 5. Powder injection shell; 6. Ball screw linear module; 7. Positioning roller; 8. Liquid injection pipe; 9. Rotary nozzle; 10. Cylinder; 11. Guide wheel; 12. Powder injection pipe; 13. Fan; 14. Air concentrator; 15. Waste powder hopper. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-6This utility model provides a quick demolding mechanism for a powder molding machine, including a molding machine body 1. The interior of the molding machine body 1 includes a female mold and a male mold. A support platform 2 is provided on one side of the molding machine body 1, and an anti-sticking mold component for lubricating the inner wall of the female mold is provided on the top surface of the support platform 2. A material pushing component for pushing the finished product after demolding is also provided on the top surface of the support platform 2. The anti-stick mold assembly includes a lead tube shell 3, which has an internal cavity. A guide wheel 11 is rotatably connected to the cavity via a bearing seat. An injection tube 8 is installed inside the cavity, passing over the guide wheel 11 and fitting against it. A rotating nozzle 9 is installed at one end of the injection tube 8 near the lead tube shell 3, and a quick connector is installed at the other end. The rotating nozzle 9 is located above the female mold. A cylinder 10 is installed on the top surface of the lead tube shell 3. The piston rod of the cylinder 10 passes through the top surface of the lead tube shell 3 and is fixedly connected to a clamp, which is fitted onto the surface of the injection tube 8.

[0025] The pushing component includes a pusher block 4 fixedly connected to one end of the lead tube shell 3 near the molding machine body 1. The pusher block 4 is in contact with the top surface of the female mold. The support platform 2 is equipped with a ball screw linear module 6 for pushing the pusher block 4.

[0026] A powder injection shell 5 is fixedly connected to one end of the lead tube shell 3 away from the pusher block 4. A slider is fixedly connected to one side of the powder injection shell 5, and the slider is slidably connected to the guide rail inside the ball screw linear module 6. A powder injection pipe 12 for conveying powder is installed on the top surface of the powder injection shell 5, and a quick connector is installed at the top end of the powder injection pipe 12.

[0027] When the molding machine body 1 is needed, first install the support platform 2 on one side of the molding machine body 1, so that the bottom surface of the pusher block 4 is flush with the top surface of the female mold. Then it can be used. In use, connect the motor inside the ball screw linear module 6 to the external power supply and start it. The ball screw inside the ball screw linear module 6 rotates, thereby indirectly pushing the slider to slide on the guide rail surface, thereby driving the lead tube shell 3 to move towards the molding machine body 1. At this time, the injection tube 8 is pulled and moves in the same direction until the rotating nozzle 9 is directly above the female mold. The ball screw will stop rotating. Then start the cylinder 10. The piston rod of the cylinder 10 will... The clamp drives one end of the injection pipe 8 to extend into the interior of the female mold, while the rotating nozzle 9 is moved along with it. The guide wheel 11, which is in contact with the injection pipe 8, rotates until it reaches the maximum stroke range of the cylinder 10. Then, the external release agent delivery pipe is connected to the injection pipe 8 through a quick connector, so that the release agent flows into the interior of the rotating nozzle 9 through the injection pipe 8 and is sprayed onto the inner wall of the female mold through the rotating nozzle 9. When the rotating nozzle 9 sprays the release agent, it will rotate, so that the spraying is more comprehensive. By attaching the release agent to the inner wall of the female mold, a diaphragm is formed between the powder and the female mold, thereby reducing the resistance during demolding and avoiding damage.

[0028] It should be noted that the cylinder 10 is a power actuator that converts the pressure energy of compressed air into mechanical energy. By controlling the gas in and out, it drives the piston to perform linear reciprocating motion. It can be used in conjunction with a magnetic switch, proximity switch or photoelectric switch to achieve precise control of the extension and retraction displacement of the cylinder piston rod. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0029] This process can effectively improve demolding efficiency while reducing wear on the mold. After the release agent is sprayed, cylinder 10 will automatically reset, driving the relevant parts back to the initial state, preparing for the next operation. The design of the entire device fully considers the convenience of operation and the ease of maintenance. Key components adopt a modular structure, which is easy to disassemble and replace.

[0030] After the release agent is sprayed and reset, the lead screw will rotate again, causing the powder injection shell 5 to move again until the opening of the powder injection pipe 12 is above the female mold. The lead screw will then stop again, and the powder supply port of the external powder supply equipment will be connected to the powder injection pipe 12 through a quick connector. The powder will be transported to the inside of the female mold through the powder injection pipe 12 to replenish the material inside the female mold.

[0031] After the material inside the female mold is replenished, the lead screw reverses, causing the pusher block 4 to return along its original path. Because the bottom surface of the pusher block 4 is in contact with the top surface of the female mold, when the pusher block 4 passes the top surface of the female mold, it will scrape the powder inside the female mold until the pusher block 4 returns to its original position. Then the molding machine body 1 is started again, so that the punch and the female mold cooperate to compress the powder into shape. After the powder is formed, the female mold will push out the finished material. At this time, the release agent diaphragm inside the female mold will be destroyed. Then the pusher block 4 is moved towards the molding machine body 1 again until the pusher block 4 comes into contact with the finished material. The continuous movement of the pusher block 4 will push the finished material away from the female mold.

[0032] It should be noted that the rotary nozzle model 9 is 1 / 2, 19250. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0033] It should be noted that the ball screw linear module 6 includes a ball screw, ball nut, linear guide, slide block and motor, etc. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0034] In this invention, the pusher block 4 has an arc-shaped groove on the side away from the lead tube shell 3 for limiting the finished material.

[0035] When the pusher block 4 comes into contact with the finished product, the finished product should be inside the arc-shaped groove. The arc-shaped groove limits the finished product and prevents it from shifting when it is pushed away from the female mold.

[0036] In this utility model, two wind-gathering hoods 14 are symmetrically fixedly connected to both sides of the inlet shell 3, and a fan 13 is installed at the open end of one of the wind-gathering hoods 14, with the airflow direction of the fan 13 facing the inside of the inlet shell 3.

[0037] When the rotating nozzle 9 sprays the release agent, the fan 13 is activated. The fan 13 blows air into the inside of the inlet tube shell 3, and the gas inside the inlet tube shell 3 is discharged from the inside of another air shroud 14. By increasing the air flow rate inside the inlet tube shell 3, the drying speed of the release agent is accelerated, and a diaphragm is formed quickly.

[0038] In this utility model, a waste powder hopper 15 is fixedly connected to the top surface of the support platform 2 by bolts, and the waste powder hopper 15 is located on the side of the support platform 2 close to the molding machine body 1.

[0039] When the pusher block 4 retracts, it smooths out the powder and pushes excess powder into the waste powder hopper 15, so that the powder can be effectively collected and material waste is avoided.

[0040] In this utility model, the top surface of the support platform 2 is symmetrically connected to two positioning rollers 7 through bearing seats, and the top of the two positioning rollers 7 is flush with the bottom surface of the pusher block 4 and the powder injection shell 5.

[0041] As the pusher block 4 moves above the support platform 2, the positioning roller 7 comes into contact with the bottom surface of the powder injection shell 5, thus supporting the powder injection shell 5 and ensuring its stability during movement, while reducing wear caused by friction. The symmetrical design of the two positioning rollers 7 can evenly distribute the pressure, avoiding tilting or jamming caused by uneven force.

[0042] It should be noted that the injection pipe 8 in this application is a flexible hose, so the movement of the rotating nozzle 9 does not affect the normal connection and use of the injection pipe 8.

[0043] The use of this utility model involves the following steps: S1: When the molding machine body 1 needs to be used, first install the support platform 2 on one side of the molding machine body 1, so that the bottom surface of the pusher block 4 is flush with the top surface of the female mold. Then it can be used. When using it, connect the motor inside the ball screw linear module 6 to the external power supply and start it. The screw inside the ball screw linear module 6 rotates, thereby indirectly pushing the slider to slide on the guide rail surface, thereby driving the lead tube shell 3 to move towards the molding machine body 1. At this time, the injection tube 8 is pulled and extends in the same direction until the rotating nozzle 9 is directly above the female mold. The screw will stop rotating. Then start the cylinder 10. The piston rod of the cylinder 10 The clamp will drive one end of the injection pipe 8 to extend into the interior of the female mold, while the rotating nozzle 9 will be moved along with it. The guide wheel 11, which is in contact with the injection pipe 8, will rotate until the cylinder 10 reaches its maximum stroke range. Then, the external release agent delivery pipe will be connected to the injection pipe 8 through a quick connector, so that the release agent flows into the interior of the rotating nozzle 9 through the injection pipe 8 and is sprayed onto the inner wall of the female mold through the rotating nozzle 9. When the rotating nozzle 9 sprays the release agent, the rotating nozzle 9 will rotate, so that the spraying is more comprehensive. By attaching the release agent to the inner wall of the female mold, a diaphragm is formed between the powder and the female mold, thereby reducing the resistance during demolding and avoiding damage. S2: After the release agent is sprayed and reset, the screw will rotate again, causing the powder injection shell 5 to move again until the opening of the powder injection pipe 12 is above the female mold. The screw will stop again, and then the powder supply port of the external powder supply equipment will be connected to the powder injection pipe 12 through a quick connector. The powder will be transported to the inside of the female mold through the powder injection pipe 12 to replenish the material inside the female mold. S3: After the material inside the female mold is replenished, the lead screw reverses, causing the pusher block 4 to return along the original path. Because the bottom surface of the pusher block 4 is in contact with the top surface of the female mold, when the pusher block 4 passes the top surface of the female mold, the pusher block 4 will scrape the powder inside the female mold until the pusher block 4 returns to its original position. Then the molding machine body 1 is started, so that the punch and the female mold cooperate to compress the powder into shape. After the powder is formed, the female mold will push out the finished product. At this time, the release agent membrane inside the female mold will be destroyed. Then the pusher block 4 is moved towards the molding machine body 1 again until the pusher block 4 comes into contact with the finished product. The continuous movement of the pusher block 4 will push the finished product away from the female mold. S4: When the pusher block 4 comes into contact with the finished product, the finished product should be inside the arc-shaped groove. The arc-shaped groove limits the finished product and prevents it from shifting when it is pushed away from the female mold. S5: When the rotating nozzle 9 is spraying the release agent, the fan 13 is started. The fan 13 blows air into the inside of the inlet tube shell 3. The gas inside the inlet tube shell 3 is discharged from the inside of another air shroud 14. By increasing the air flow rate inside the inlet tube shell 3, the drying speed of the release agent is accelerated, and the diaphragm is formed quickly. S6: When the pusher block 4 is retracted, while smoothing the powder, the pusher block 4 will also push the excess powder into the interior of the waste powder hopper 15, so that the powder can be effectively collected and material waste is avoided. S7: When the pusher block 4 moves above the support platform 2, the positioning roller 7 will fit against the bottom surface of the powder injection shell 5, thereby supporting the powder injection shell 5, ensuring its stability during movement, and reducing wear caused by friction. The symmetrical design of the two positioning rollers 7 can evenly distribute the pressure.

[0044] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs. The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A quick demolding mechanism for a powder molding machine, comprising a molding machine body (1), wherein the interior of the molding machine body (1) includes a female mold and a male mold, characterized in that: A support platform (2) is provided on one side of the molding machine body (1), and an anti-sticking mold assembly for lubricating the inner wall of the female mold is provided on the top surface of the support platform (2). A material pushing assembly for pushing the finished product after demolding is also provided on the top surface of the support platform (2). The anti-sticking mold assembly includes a lead tube shell (3), the lead tube shell (3) has a receiving cavity inside, and a guide wheel (11) is rotatably connected inside the receiving cavity through a bearing seat. An injection tube (8) is provided inside the receiving cavity. The injection tube (8) passes over the guide wheel (11) and is in contact with the guide wheel (11). A rotating nozzle (9) is installed at one end of the injection tube (8) near the lead tube shell (3), and a quick connector is installed at the other end of the injection tube (8) away from the rotating nozzle (9).

2. The rapid demolding mechanism for a powder molding machine according to claim 1, characterized in that: The rotating nozzle (9) is located above the female mold. A cylinder (10) is installed on the top surface of the inlet shell (3). The piston rod of the cylinder (10) passes through the top surface of the inlet shell (3) and is fixedly connected with a clamp. The clamp is sleeved on the surface of the injection pipe (8).

3. The rapid demolding mechanism for a powder molding machine according to claim 1, characterized in that: The pushing component includes a pusher block (4) fixedly connected to one end of the lead tube shell (3) near the molding machine body (1). The pusher block (4) is in contact with the top surface of the female mold. The support platform (2) is equipped with a ball screw linear module (6) for pushing the pusher block (4).

4. The quick demolding mechanism for a powder molding machine according to claim 3, characterized in that: The pusher block (4) has an arc-shaped groove on the side away from the inlet shell (3) for limiting the finished material.

5. The rapid demolding mechanism for a powder molding machine according to claim 3, characterized in that: The end of the lead tube shell (3) away from the pusher block (4) is fixedly connected to a powder injection shell (5). A slider is fixedly connected to one side of the powder injection shell (5), and the slider is slidably connected to the guide rail inside the ball screw linear module (6). A powder injection pipe (12) for conveying powder is installed on the top surface of the powder injection shell (5), and a quick connector is installed at the top end of the powder injection pipe (12).

6. The rapid demolding mechanism for a powder molding machine according to claim 2, characterized in that: Two wind-gathering hoods (14) are symmetrically fixedly connected to both sides of the inlet shell (3), and a fan (13) is installed at the open end of one of the wind-gathering hoods (14), with the airflow direction of the fan (13) facing the inside of the inlet shell (3).

7. The rapid demolding mechanism for a powder molding machine according to claim 1, characterized in that: The top surface of the support platform (2) is fixedly connected to a waste powder hopper (15) by bolts. The waste powder hopper (15) is located on the side of the support platform (2) close to the molding machine body (1).

8. The quick demolding mechanism for a powder molding machine according to claim 5, characterized in that: The top surface of the support platform (2) is symmetrically connected to two positioning rollers (7) via bearing seats, and the top of the two positioning rollers (7) is flush with the bottom surface of the pusher block (4) and the powder injection shell (5).

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