A screw plus powder push rod lower powder structure

Abstract

The utility model provides a kind of screw adds powder push rod lower powder structure, including adjustable mounting base component, screw adds powder component, driving valve component and cambered surface pressing plate component, adjustable mounting base component is movably installed with screw adds powder mounting plate, screw adds powder mounting plate is fixedly installed with screw adds powder component, driving valve component and cambered surface pressing plate component, driving valve component output end is installed with powder cup, the powder cup is set in the upper end surface position of cambered surface pressing plate component, cambered surface pressing plate component lower end surface is inlaid with work surface setting, cambered surface pressing plate component is provided with powder outlet, screw adds powder component output end is opposite with the powder cup setting.The utility model is more stronger in adaptability, and structural stability is better, can realize disposable powder filling, the application is also provided with certain fine adjustment ability large cambered surface pressing plate mechanism and four-corner spring structure, buffering effect is better, can solve the influence brought by part error.

Description

Technical Field

[0001] This utility model relates to the technical field of filling and feeding equipment structure, and in particular to a screw-powder-adding-powder-discharging structure. Background Technology

[0002] In the field of agar beads production equipment technology, liquid, powder and other filling contents can be independently packaged in water-soluble film (such as PVA film) according to different shapes. Since the powder filling used in mass production is continuous, powder needs to be added at a fixed position on a continuously rolling arc surface. At the same time, the filling time and quality on the arc surface must be as accurate and stable as possible.

[0003] In existing powder filling mechanisms, powder falls from the powder feeding mechanism into the mold cavity requiring powder filling due to its own weight. Due to the inherent characteristics of the powder, some powder remains floating above the mold cavity during the falling process and fails to fall completely within the required filling time. As the roller mold surface rolls, the powder floating in the air gradually falls slowly due to its own weight. Some powder may land outside the required powder filling cavity or enter other cavities, leading to poor sealing of the final product or powder mixing with liquid in other cavities, resulting in product defects. Commercially available powder feeding machines typically use a powder nozzle with the same arc surface as the mold surface to solve this problem. The nozzle contacts and rubs against the mold, ensuring that the powder does not float out of the required filling cavity. However, in actual use, due to various errors in the installation components and processing parts, the fit between the nozzle's arc surface and the mold's arc surface is problematic. Furthermore, the roundness of the upper roller mold cannot be guaranteed during installation, and the uneven mold arc surface can jam the nozzle during operation, causing damage. Molds typically require multiple cavities to meet production needs, and correspondingly, multiple powder filling stations are needed to support production.

[0004] Most models on the market use a single large material bin with multiple powder filling stations to meet production needs, which saves costs and space to some extent. However, this results in a bulky mechanism that is difficult to adapt to the filling requirements of different molds and positions. Furthermore, the filling mechanism itself is expensive, and the bulky design leads to high modification costs. Additionally, structural adjustments are difficult when there are errors in the installation position. Mold cavities requiring powder filling are typically of varying shapes and sizes, and the powder outlet is usually a single round hole. While a single round hole is less prone to clogging, if it is too large, it is difficult to fill smaller areas; if it is too small, the filling volume cannot meet the total filling requirements. This often results in molds that are difficult to fill reaching the required weight.

[0005] There is a need for a screw-feeding-powder-pushing-powder-discharging structure that can solve the above problems. Utility Model Content

[0006] This utility model provides a screw-feeding and pusher-feeding structure, which solves the problem of poor filling effect of existing filling equipment by technically modifying the existing feeding equipment.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A screw-feeding and push-rod-discharging structure includes an adjustable mounting base component, a screw-feeding component, a drive valve component, and an arc-shaped pressure plate component. A screw-feeding mounting plate is movably mounted on the adjustable mounting base component. The screw-feeding component, drive valve component, and arc-shaped pressure plate component are fixedly mounted on the screw-feeding mounting plate. A powder cup is mounted at the output end of the drive valve component, positioned on the upper surface of the arc-shaped pressure plate component. The lower surface of the arc-shaped pressure plate component is in contact with the working surface. A powder outlet is provided on the arc-shaped pressure plate component. The output end of the screw-feeding component is opposite to the powder cup. The drive valve component drives the powder cup to move along the upper surface of the arc-shaped pressure plate component to the powder outlet for discharging.

[0008] Preferably, the adjustable mounting base component includes a mounting base plate, a linear guide rail, a linear slider, a frame mounting plate, and a screw powder adding mounting plate. The linear guide rail is mounted on the mounting base plate, and the linear slider is slidably mounted on the linear guide rail. The screw powder adding mounting plate is fixedly mounted on the linear slider. The frame is provided with a working position and a parking position. The screw powder adding mounting plate is movable between the working position and the parking position along the linear guide rail. Frame mounting plates are also fixedly mounted on both sides of the mounting base plate for connection to the frame.

[0009] Preferably, the screw powder feeding component includes a powder hopper, a sealing assembly, an electric drive assembly, a screw mounting base, a screw, and a powder feeding valve seat. The screw mounting base is detachably mounted on the screw powder feeding mounting plate by screws. The screw is inserted through the screw mounting base, and a cavity for receiving powder is formed inside the screw mounting base. A powder hopper for discharging is mounted on the upper end of the screw mounting base. The upper end of the powder hopper is connected to an external material suction machine for storage. The lower end of the powder hopper is connected to the cavity of the screw mounting base. A sealing assembly is mounted on the screw mounting base near the electric drive assembly. One end of the screw passes through the sealing assembly and is connected to the output end of the electric drive assembly. The other end of the screw passes away from the electric drive assembly. The screw mounting base is connected to the powder feeding valve seat, and the bottom of the powder feeding valve seat has an opening facing the powder cup.

[0010] Preferably, the driving valve component includes a motor, a motor connecting rod, a fisheye connector, a linear motion connector, a powder cup adjusting plate, a connecting rod, and a powder cup. The motor is fixedly mounted on the screw powder feeding mounting plate. The motor output end is connected to the fisheye connector via the motor connecting rod. The other end of the fisheye connector is connected to the linear motion connector. The linear motion connector is also fixedly connected to the push plate adjusting plate. Connecting rods are respectively installed on the left and right sides of the push plate adjusting plate for connecting to the powder cup. The motor is used to drive the linear motion connector to move the powder cup on the upper surface of the arc-shaped pressure plate component.

[0011] Preferably, a fixed bearing seat is also fixedly installed at the bottom of the screw powder feeding mounting plate, and the linear motion connector passes through the fixed bearing seat.

[0012] Preferably, the drive valve component includes a cylinder assembly, a locking tongue plate adjusting block, a locking tongue plate, and a powder cup. The cylinder assembly is fixedly mounted on the screw powder feeding mounting plate. The output end of the cylinder assembly is connected to a locking tongue plate adjusting block. The locking tongue plate adjusting block is provided with an adjustment fixing slot. The locking tongue plate is adjustable and fixed in the adjustment fixing slot by fixing bolts. The powder cup is also fixedly mounted on the locking tongue plate. The cylinder assembly is used to drive the locking tongue plate and the powder cup to move and be set on the upper end surface of the arc-shaped pressure plate component.

[0013] Preferably, the arc-shaped pressure plate component includes a screw mounting plate, a plug screw, a spring, and an arc-shaped pressure plate. The screw mounting plate is fixedly installed on the left and right sides of the front end of the screw powder feeding mounting plate. A plug screw is installed through the screw mounting plate. The lower end of the plug screw is fixedly connected to the perimeter of the upper surface of the arc-shaped pressure plate. A spring is installed between the plug screw and the arc-shaped pressure plate. The lower surface of the arc-shaped pressure plate is provided with an arc surface that fits against the working surface. The powder outlet provided on the arc-shaped pressure plate extends out from the bottom arc surface. The diameter of the powder outlet gradually decreases from top to bottom.

[0014] Preferably, the bottom arc end of the arc-shaped pressure plate is continuously provided with a beveled surface.

[0015] Preferably, the powder outlet is provided with an output port that matches the shape of the mold cavity.

[0016] The beneficial effects of this utility model are as follows: Compared to the traditional powder feeding mechanism that uses a single material box and multiple stations, the multi-station and multi-material box structure of this application is more flexible, and the distance between the stations can be adjusted to adapt to molds with different distances. The structural stability has also been improved. The curved pressure plate of this application guides the uneven parts on the working surface through the beveled surface, reducing the risk of contact friction during operation. Traditionally, the powder nozzle is fixed on the powder feeding mechanism, and the powder is continuously fed through the round hole to complete the filling. This application uses a push rod and powder cup to push the powder onto the powder outlet of the curved pressure plate, which can achieve one-time powder filling, resulting in higher powder filling efficiency and more stable powder feeding.

[0017] Commercially available pressure plates using a single spring are commonly used to press the working surface. While this mechanism theoretically meets all operational requirements, in practice, installation and manufacturing errors often result in the pressure plate not fully adhering to the working surface. The single spring outputs pressure directly below, which is insufficient to cover the entire surface when dealing with larger molds. This application utilizes a large-arc pressure plate mechanism with some fine-tuning capability and springs at the four corners to mitigate the impact of errors to a certain extent, and also provides a more stable spring force output.

[0018] Meanwhile, a mold-like shape can be made on the powder outlet under the curved pressure plate. Compared with the round hole, the molded hole can fill the corners of the shape, making the filling quality more stable. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the adjustable mounting base component of this utility model; Figure 3 This is a schematic diagram of the screw powder feeding component of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of the screw powder feeding component of this utility model; Figure 5 This is a schematic diagram of the assembly of the drive valve component and the arc-shaped pressure plate component of this utility model; Figure 6 This is a schematic diagram of the bottom structure of the drive valve component and the arc-shaped pressure plate component of this utility model; Figure 7-8 This is a schematic diagram of the installation structure of the drive valve component in another embodiment 2 of this utility model; Reference numerals: Adjustable mounting base component 1, mounting base plate 11, linear guide rail 12, linear slider 13, frame mounting plate 14, screw powder filling mounting plate 15, screw powder filling component 2, powder tank 21, sealing assembly 22, electric drive assembly 23, screw mounting seat 24, screw 25, powder filling valve seat 26, drive valve component 3, motor 31, motor connecting rod 32, fisheye connector connector 33, linear motion connector 34, powder cup adjusting plate 35, connecting rod 36, powder cup 37, fixed bearing seat 38, cylinder assembly 301, locking tongue plate adjusting block 302, locking tongue plate 303, arc-shaped pressure plate component 4, screw mounting plate 41, plug screw 42, spring 43, arc-shaped pressure plate 44, powder outlet 441, beveled surface 45. Detailed Implementation

[0020] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1-6 As shown, this utility model provides a screw-feeding and push-rod-feeding structure, including an adjustable mounting base component 1, a screw-feeding component 2, a drive valve component 3, and an arc-shaped pressure plate component 4. A screw-feeding mounting plate 15 is movably mounted on the adjustable mounting base component 1. The screw-feeding component 2, the drive valve component 3, and the arc-shaped pressure plate component 4 are fixedly mounted on the screw-feeding mounting plate 15. A powder cup 37 is installed at the output end of the drive valve component 3. The powder cup 37 is located on the upper end face of the arc-shaped pressure plate component 4. The lower end face of the arc-shaped pressure plate component 4 is in contact with the working surface. A powder outlet 441 is provided on the arc-shaped pressure plate component 4. The output end of the screw-feeding component 2 is opposite to the powder cup 37. The drive valve component 3 is used to drive the powder cup 37 to move along the upper end face of the arc-shaped pressure plate component 4 to the powder outlet 441 for feeding.

[0022] Furthermore, the adjustable mounting base component 1 includes a mounting base plate 11, a linear guide rail 12, a linear slider 13, a frame mounting plate 14, and a screw powder adding mounting plate 15. The linear guide rail 12 is mounted on the mounting base plate 11, and the linear slider 13 is slidably mounted on the linear guide rail 12. The screw powder adding mounting plate 15 is fixedly mounted on the linear slider 13. The frame is provided with a working position and a parking position. The screw powder adding mounting plate 15 is movably positioned between the working position and the parking position along the linear guide rail 12. Frame mounting plates 14 are also fixedly mounted on both sides of the mounting base plate 11 for connection to the frame.

[0023] When in the parking position, the mechanism moves backward to facilitate the hydrogel film wrapping around the mold roller surface after startup. After being pushed to the working position, the electric drive assembly 23 drives the screw 25 to rotate to complete the powder addition. The powder falls into the powder cup 37, and the powder is transported by the drive valve assembly 3.

[0024] Further, the screw powder feeding component 2 includes a powder hopper 21, a sealing assembly 22, an electric drive assembly 23, a screw mounting base 24, a screw 25, and a powder feeding valve seat 26. The screw mounting base 24 is detachably mounted on the screw powder feeding mounting plate 15 via screws. The screw 25 passes through the screw mounting base 24, and a cavity for receiving powder is formed within the screw mounting base 24. The powder hopper 21 for discharging is mounted on the upper end of the screw mounting base 24, and the upper end of the powder hopper 21 is connected to the external... The material suction machine is connected to the powder hopper 21. The lower end of the powder hopper 21 is connected to the cavity of the screw mounting base 24. A sealing component 22 is installed on the screw mounting base 24 near the electric drive assembly 23. One end of the screw 25 passes through the sealing component 22 and is connected to the output end of the electric drive assembly 23. The other end of the screw 25 passes away from the electric drive assembly 23. The screw mounting base 24 is connected to the powder feeding valve seat 26. The bottom of the powder feeding valve seat 26 has an opening that faces the powder cup 37. The electric drive assembly 23 is equipped with a drive motor, a reducer, and a coupling. The output end of the drive motor is connected to the screw 25 through the reducer and coupling. The number of revolutions during operation corresponds to different powder feeding masses. At the same time, the sealing component 22 is installed on the screw 25 to ensure that the powder does not affect the driving operation of the screw 25. A large powder cylinder is fixedly installed on the external suction machine. The lower end of the large powder hopper 21 is connected to the powder hopper 21 through a flexible tube to meet the movement requirements of the screw powder feeding component 2.

[0025] Furthermore, the driving valve component 3 includes a motor 31, a motor connecting rod 32, a fisheye connector 33, a linear motion connector 34, a powder cup adjusting plate 35, a connecting rod 36, and a powder cup 37. The motor 31 is fixedly mounted on the screw powder feeding mounting plate 15. The output end of the motor 31 is connected to the fisheye connector 33 through the motor connecting rod 32. The other end of the fisheye connector 33 is connected to the linear motion connector 34. The linear motion connector 34 is also fixedly connected to the push plate adjusting plate. Connecting rods 36 are respectively installed on the left and right sides of the push plate adjusting plate for connecting to the powder cup 37. The motor 31 is used to drive the linear motion connector 34 to move the powder cup 37 on the upper surface of the arc-shaped pressure plate component 4.

[0026] Two sets of powder cup 37 and screw powder feeding component 2 are provided, which can perform multi-station feeding and increase feeding efficiency.

[0027] Furthermore, a fixed bearing seat 38 is also fixedly installed at the bottom of the screw powder feeding mounting plate 15, and the linear motion connector 34 passes through the fixed bearing seat 38. The fixed bearing seat 38 can keep the linear motion connector 34 moving in the horizontal direction without deflection.

[0028] When motor 31 starts, it drives motor connecting rod 32 to rotate. Motor connecting rod 32 drives spherical connector 33 to move. Then, through linear motion connector 34 connected to spherical connector 33, the distance between the extended ends of connecting rod 36 and powder cup 37 is adjusted, controlling the working position of powder cup 37. Linear motion connector 34 works in two parts: one end is connected to spherical connector 33 and motor connecting rod 32 to motor 31 as the power output end; the other end is connected to powder cup adjusting plate 35 and connecting rod 36, responsible for converting rotational motion into linear motion. Furthermore, linear motion connector 34, through fixed bushing and connecting rod 36, controls the adjustable powder cup adjusting plate 35 of powder cup 37 to prevent positional shift due to the adjustable deflection of spherical connector.

[0029] like Figure 7-8 As shown, in another embodiment 2, the driving valve component 3 includes a cylinder assembly 301, a locking tongue plate adjusting block 302, a locking tongue plate 303, and a powder cup 37. The cylinder assembly 301 is fixedly mounted on the screw powder feeding mounting plate. The output end of the cylinder assembly 301 is connected to a locking tongue plate adjusting block 302. The locking tongue plate adjusting block 302 is provided with an adjusting and fixing slot 3021. The locking tongue plate 303 can be adjusted and fixedly installed in the adjusting and fixing slot 3021 by fixing bolts. The powder cup 37 is also fixedly mounted on the locking tongue plate 303. The cylinder assembly 301 is used to drive the locking tongue plate 303 and the powder cup 37 to move on the upper end surface of the arc-shaped pressure plate component.

[0030] After the screw rotates and completes the powder feeding, all the powder falls into the powder cup 37. When the mold rotates on the powder feeding mold cavity, the cylinder assembly 301 pulls the locking tongue 303 back, the valve opens, and the powder falls into the powder outlet 441 corresponding to the arc-shaped pressure plate. In order to accommodate the change in position of the screw powder feeding component 2, different powder feeding intervals also need to be adjusted by adjusting the position of the locking tongue 303 through the locking tongue adjusting block 302.

[0031] Furthermore, the arc-shaped pressure plate component 4 includes a screw mounting plate 41, a plug screw 42, a spring 43, and an arc-shaped pressure plate 44. The screw mounting plate 41 is fixedly installed on the left and right sides of the front end of the screw powder mounting plate 15. The plug screw 42 is installed through the screw mounting plate 41. The lower end of the plug screw 42 is fixedly connected to the upper surface of the arc-shaped pressure plate 44 around the perimeter. A spring 43 is installed between the plug screw 42 and the arc-shaped pressure plate 44. The lower surface of the arc-shaped pressure plate 44 is provided with an arc surface that fits against the working surface. The powder outlet 441 provided on the arc-shaped pressure plate 44 extends out from the bottom arc surface. The diameter of the powder outlet 441 gradually decreases from top to bottom.

[0032] When pushed to the working position, the plug screw 42 extends, the spring 43 retracts, and the arc-shaped pressure plate 44 is pressed against the working surface by the pressure of the spring 43. Through the gap fit between the hole on the screw mounting plate 41 and the plug screw 42, the entire arc-shaped pressure plate 44, the plug screw 42 and the spring 43 can be slightly adjusted in angle, which can reduce the arc surface not fitting due to installation errors.

[0033] Furthermore, the bottom arc end of the arc plate 44 is continuously provided with a beveled surface 45. The uneven part of the working surface moves smoothly along the beveled surface 45, which can avoid damage to the arc plate 44 due to the unevenness of the arc surface itself.

[0034] Furthermore, in another embodiment 2, the powder outlet 441 is provided with an output port that matches the shape of the mold cavity. When faced with a mold cavity with a unique shape or a large variation in cross-sectional size, the small opening can be changed to an output port similar to the shape of the mold, allowing the powder to be filled into the mold cavity more evenly.

[0035] Compared to the traditional powder feeding mechanism that uses a single material box and multiple stations, the multi-station and multi-material box structure of this application is more flexible, and the distance between the stations can be adjusted to adapt to molds with different distances. The structural stability is also improved. The curved pressure plate 44 of this application guides the uneven parts on the working surface through the inclined surface 45, reducing the risk of contact friction during operation. Traditionally, the powder nozzle is fixed on the powder feeding mechanism, and the powder is continuously fed through the round hole to complete the filling. This application uses a push rod and powder cup 37 to push the powder onto the powder outlet of the arc-shaped pressure plate 44, which can achieve one-time powder filling, resulting in higher powder filling efficiency and more stable powder feeding.

[0036] In commercially available systems, a single spring 43 is commonly used to connect a pressure plate to press the working surface. Theoretically, this mechanism can fully meet operational requirements. However, in actual use, installation and machining errors often result in the pressure plate not fully adhering to the working surface. The single spring 43 outputs pressure force directly below, which is insufficient to cover the entire surface when dealing with larger molds. This application utilizes a large-arc pressure plate component 4 with a certain degree of fine-tuning capability and springs 43 at the four corners to mitigate the impact of errors to some extent, and also provides a more stable spring force.

[0037] Meanwhile, a mold-like shape can be made on the powder inlet of the curved pressure plate 44. Compared with the round hole, the molded hole can fill the corners of the shape, making the filling quality more stable.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

[0039] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A screw-feeding-powder-pushing-powder structure, characterized in that, The device includes an adjustable mounting base, a screw powder feeding component, a drive valve component, and an arc-shaped pressure plate component. A screw powder feeding mounting plate is movably mounted on the adjustable mounting base. The screw powder feeding component, drive valve component, and arc-shaped pressure plate component are fixedly mounted on the screw powder feeding mounting plate. A powder cup is mounted on the output end of the drive valve component, and the powder cup is positioned on the upper surface of the arc-shaped pressure plate component. The lower surface of the arc-shaped pressure plate component is in contact with the working surface, and a powder outlet is provided on the arc-shaped pressure plate component. The output end of the screw powder feeding component is positioned opposite to the powder cup. The drive valve component is used to move the powder cup along the upper surface of the arc-shaped pressure plate component to the powder outlet for discharging.

2. The screw-feeding-powder-pushing-powder-discharging structure according to claim 1, characterized in that, The adjustable mounting base component includes a mounting base plate, a linear guide rail, a linear slider, a frame mounting plate, and a screw powder filling mounting plate. The linear guide rail is mounted on the mounting base plate, and the linear slider is slidably mounted on the linear guide rail. The screw powder filling mounting plate is fixedly mounted on the linear slider. The frame is provided with a working position and a parking position. The screw powder filling mounting plate is movable between the working position and the parking position along the linear guide rail. Frame mounting plates are also fixedly mounted on both sides of the mounting base plate for connection to the frame.

3. The screw-feeding-powder-pushing-powder-discharging structure according to claim 1, characterized in that, The screw powder feeding component includes a powder hopper, a sealing assembly, an electric drive assembly, a screw mounting base, a screw, and a powder feeding valve seat. The screw mounting base is detachably mounted on the screw powder feeding mounting plate via screws. A screw passes through the screw mounting base, which has a cavity for receiving powder. A powder hopper for discharging is mounted on the upper end of the screw mounting base, and the upper end of the powder hopper is connected to an external material suction machine for storage. The lower end of the powder hopper is connected to the cavity of the screw mounting base. A sealing assembly is mounted on the screw mounting base near the electric drive assembly. One end of the screw passes through the sealing assembly and connects to the output end of the electric drive assembly, while the other end of the screw passes away from the electric drive assembly. The screw mounting base is connected to the powder feeding valve seat, which has an opening at its bottom facing the powder cup.

4. The screw-feeding-powder-pushing-powder-discharging structure according to claim 1, characterized in that, The driving valve component includes a motor, a motor connecting rod, a fisheye connector, a linear motion connector, a powder cup adjusting plate, a connecting rod, and a powder cup. The motor is fixedly mounted on the screw powder feeding mounting plate. The motor output end is connected to the fisheye connector via the motor connecting rod. The other end of the fisheye connector is connected to the linear motion connector. The linear motion connector is also fixedly connected to the push plate adjusting plate. Connecting rods are installed on the left and right sides of the push plate adjusting plate for connecting to the powder cup. The motor drives the linear motion connector to move the powder cup on the upper surface of the arc-shaped pressure plate component.

5. The screw-feeding-powder-pushing-powder-discharging structure according to claim 4, characterized in that, A fixed bearing seat is also fixedly installed at the bottom of the screw powder feeding mounting plate, and the linear motion connector passes through the fixed bearing seat.

6. The screw-feeding-powder-pushing-powder-discharging structure according to claim 1, characterized in that, The drive valve component includes a cylinder assembly, a locking tongue plate adjusting block, a locking tongue plate, and a powder cup. The cylinder assembly is fixedly mounted on the screw powder feeding mounting plate. The output end of the cylinder assembly is connected to a locking tongue plate adjusting block. The locking tongue plate adjusting block is provided with an adjustment fixing slot. The locking tongue plate can be adjusted and fixedly installed in the adjustment fixing slot by fixing bolts. The powder cup is also fixedly installed on the locking tongue plate. The cylinder assembly is used to drive the locking tongue plate and the powder cup to move and be set on the upper end surface of the arc-shaped pressure plate component.

7. The screw-feeding-powder-pushing-powder-discharging structure according to claim 1, characterized in that, The arc-shaped pressure plate component includes a screw mounting plate, a plug screw, a spring, and an arc-shaped pressure plate. The screw mounting plate is fixedly installed on the left and right sides of the front end of the screw powder feeding mounting plate. A plug screw is installed through the screw mounting plate. The lower end of the plug screw is fixedly connected to the upper surface of the arc-shaped pressure plate around the perimeter. A spring is installed between the plug screw and the arc-shaped pressure plate. The lower end surface of the arc-shaped pressure plate is provided with an arc surface that fits against the working surface. The powder outlet on the arc-shaped pressure plate is provided to protrude from the bottom arc surface. The diameter of the powder outlet gradually decreases from top to bottom.

8. The screw-feeding-powder-pushing-powder-discharging structure according to claim 7, characterized in that, The bottom arc end of the arc-shaped pressure plate is continuously provided with a beveled surface.

9. The screw-feeding-powder-pushing-powder-discharging structure according to claim 7, characterized in that, The powder outlet is provided with an output port that matches the shape of the mold cavity.

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