Servo following powder discharging system for rotary drum equipment

Abstract

The utility model discloses a servo following powder discharging system for rotary drum equipment, which comprises a powder discharging mechanism and a servo driving mechanism, the powder discharging mechanism is driven by servo to synchronously move back and forth along the rotary tangential direction of a drum, powder is accurately fed into a die cavity, and accurate control and distribution of the powder are realized through a hopper, a material distribution seat and a control assembly. The effect of improving the powder feeding precision and efficiency is achieved, meanwhile, the problems of powder waste and uneven mold cavity filling are effectively avoided, and the production quality and stability of the rotary roller equipment are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of laundry detergent pod production equipment, and more particularly to a servo-following powder dispensing system for a rotating drum device. Background Technology

[0002] Laundry detergent pods, as a highly efficient and convenient washing product, have seen rapid development in production technology in recent years. In the production process of laundry detergent pods, the molded roller and powder dispensing device are key equipment combinations. The molded roller uses mold cavities distributed on its surface to achieve quantitative filling of powder, thus providing a foundation for subsequent molding processes. The application of this technology has greatly improved the automation level and production efficiency of laundry detergent pod production, while ensuring product quality stability, playing a vital role in promoting the development of the laundry industry towards intelligence and efficiency.

[0003] In actual production, to achieve precise powder feeding, the common method is to fix the position of the powder feeding device and use the rotation of the roller to sequentially feed the powder into the mold cavity. While this can meet the powder feeding requirements to a certain extent, it still has several limitations.

[0004] The aforementioned conventional methods are insufficient to address the accuracy issue of relative movement between the powder dispensing device and the roller mold cavity in practical applications. Because the roller rotates continuously while the powder dispensing device is typically stationary, deviations can easily occur during powder feeding, affecting product yield and production efficiency. Therefore, improving the synchronization between the powder dispensing device and the roller mold cavity has become a pressing technical problem. Summary of the Invention

[0005] To improve the accuracy of powder feeding in equipment, this application provides a servo-following powder feeding system for rotary drum equipment.

[0006] This application provides a servo-guided powder feeding system for rotary drum equipment, which adopts the following technical solution:

[0007] A servo-following powder feeding system for a rotating drum device includes a powder feeding mechanism and a servo drive mechanism. The powder feeding mechanism is disposed above the drum and is used to feed powder into the mold cavity on the drum surface. The servo drive mechanism is used to drive the powder feeding mechanism to reciprocate along the tangential direction of the drum rotation. The two endpoints of the reciprocating movement path of the powder feeding mechanism are the powder feeding start point and the powder feeding end point, respectively. The powder feeding mechanism starts the powder feeding action at the powder feeding start point, and the forward movement speed of the powder feeding mechanism is equal to the linear velocity of the drum surface, so that the powder feeding mechanism moves forward synchronously with the mold cavity to be filled on the drum surface. During the forward movement, the powder feeding mechanism continuously feeds powder into the mold cavity to be filled. The powder feeding mechanism stops the powder feeding action at the powder feeding end point.

[0008] By adopting the above technical solution, the powder dispensing mechanism can perform precise reciprocating motion along the tangential direction of the rotating drum, ensuring synchronous movement with the mold cavity to be filled on the drum surface during the powder dispensing process. Since the moving speed of the powder dispensing mechanism matches the linear velocity of the drum surface, inaccurate powder dispensing caused by relative motion is effectively avoided, significantly improving the accuracy and consistency of powder dispensing. Furthermore, after completing the powder dispensing action in each mold cavity, the servo drive mechanism can quickly return the powder dispensing mechanism to the starting point for a new round of powder dispensing, improving the smoothness of powder dispensing. Simultaneously, this synchronous following design reduces powder waste, improves production efficiency, and ensures that each mold cavity is uniformly and fully filled with powder.

[0009] Preferably, the powder feeding mechanism includes a hopper for storing powder and a distribution seat disposed at the bottom of the hopper. The distribution seat is provided with a plurality of independent compartments communicating with the bottom opening of the hopper. Each compartment is provided with a discharge port for discharging powder. The discharge ports of the plurality of compartments are distributed at intervals along the axial direction of the roller. The powder feeding mechanism also includes a control component for controlling the simultaneous opening or closing of the plurality of discharge ports. When the powder feeding mechanism performs the powder feeding action, the discharge ports of the plurality of compartments are aligned one by one with the plurality of mold cavities distributed along the axial direction of the roller. The control component releases the powder in the plurality of compartments into the corresponding mold cavities by opening the discharge ports.

[0010] By adopting the above technical solution, the cooperation between the hopper and the distribution seat enables the storage and distribution of powder. The design of several compartments allows the powder to be precisely divided into multiple independent parts, thus accommodating multiple mold cavities distributed along the roller axis. The control components enable simultaneous opening or closing control of all discharge ports, ensuring the synchronization and accuracy of powder feeding, avoiding potential issues of missed or excessive powder feeding, and improving production efficiency and product quality.

[0011] Preferably, the control component includes a vertical cylinder disposed at the material distribution seat and a plurality of blocking rods disposed at the end of the vertical cylinder. The plurality of blocking rods correspond one-to-one with a plurality of compartments, and the blocking rods extend vertically through the corresponding compartments. The vertical cylinder is used to drive the plurality of blocking rods to move up and down. The control component achieves the function of closing the discharge port by blocking the discharge channel in the compartments with the blocking rods, and achieves the function of opening the discharge port by removing the blocking rods from the discharge channel.

[0012] By adopting the above technical solution, the vertical cylinder drives the sealing rod to move up and down, enabling precise control of the opening and closing of the discharge channel within the compartment. When the sealing rod blocks the discharge channel, the outlet closes, effectively preventing accidental powder leakage; when the sealing rod is removed from the discharge channel, the outlet opens, allowing for rapid powder delivery. This design ensures the accuracy and stability of powder delivery, avoiding powder waste or uneven mold cavity filling caused by untimely opening and closing of the outlet.

[0013] Preferably, the discharge port is vertically downward and a blocking member is provided on the outer periphery of the discharge port. When the discharge port feeds powder into the corresponding mold cavity, the blocking member blocks the area around the opening of the mold cavity.

[0014] By adopting the above technical solution, the vertical downward setting of the discharge port ensures that the powder falls accurately into the mold cavity, reducing powder scattering during the dispensing process. The shielding component further improves the accuracy of powder dispensing. When the discharge port dispenses powder into the mold cavity, the shielding component blocks the area around the mold cavity opening, effectively preventing powder from overflowing or spilling outside the mold cavity, thereby improving the efficiency and cleanliness of powder dispensing.

[0015] Preferably, the shielding element is an elastic pad.

[0016] By adopting the above technical solution, the elastic pad can effectively reduce the splashing of powder during the feeding process. Due to the flexibility of the elastic pad, when powder is fed into the mold cavity from the discharge port, the elastic pad fits tightly around the opening of the mold cavity, forming a good shielding effect, preventing powder from overflowing or spilling into non-target areas, thereby improving the accuracy of powder feeding and reducing material waste.

[0017] Preferably, the servo drive mechanism includes a servo motor and a ball screw that is driven by the powder feeding mechanism. The output shaft of the servo motor is coaxially and fixedly connected to the ball screw. The servo motor drives the ball screw to rotate, thereby driving the powder feeding mechanism to move along the tangential direction of the drum rotation.

[0018] By adopting the above technical solution, the cooperation between the servo motor and the ball screw can precisely control the moving speed and position of the powder dispensing mechanism, ensuring that the powder dispensing mechanism makes smooth and accurate reciprocating motion along the tangential direction of the drum rotation. Combined with the design of the powder dispensing mechanism moving synchronously with the mold cavity on the drum surface, this solution further improves the accuracy of powder dispensing and avoids problems such as powder spillage or insufficient filling caused by speed mismatch. At the same time, the ball screw transmission method has the characteristics of high efficiency and high precision, which can effectively improve the stability and reliability of the system.

[0019] Preferably, it also includes a mounting bracket, wherein a horizontal slide rail is provided at the mounting bracket, and the powder dispensing mechanism is slidably connected to the horizontal slide rail.

[0020] By adopting the above technical solution, the mounting bracket provides a stable installation foundation for the entire servo-following powder dispensing system. The horizontal slide rail allows the powder dispensing mechanism to move smoothly along the tangential direction of the rotating drum, ensuring accuracy during synchronous movement of the powder dispensing mechanism along the mold cavity of the following drum surface and avoiding inaccurate powder dispensing due to shaking or deviation. The sliding connection between the powder dispensing mechanism and the horizontal slide rail further improves the system's flexibility and reliability, enabling the powder dispensing mechanism to smoothly complete the reciprocating motion from the powder dispensing start point to the powder dispensing end point, effectively improving the efficiency and accuracy of powder dispensing.

[0021] Preferably, the horizontal slide rail can be vertically adjusted in position along the height direction of the mounting bracket.

[0022] By adopting the above technical solution, the powder feeding mechanism can flexibly adjust its position according to changes in the height of the roller, ensuring accurate alignment with the mold cavity for powder feeding on roller equipment at different heights, thus improving the system's adaptability and compatibility. The vertical adjustment function further enhances the practicality of the powder feeding system, meeting the needs of various working conditions.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The powder feeding mechanism is driven by a servo drive mechanism to move along the tangential direction of the drum rotation, and the moving speed of the powder feeding mechanism is synchronized with the linear speed of the drum surface, thereby significantly improving the accuracy of the powder feeding process and effectively solving the deviation problem when the powder feeding device moves relative to the drum cavity.

[0025] 2. The powder feeding mechanism continuously feeds powder during its movement from the powder feeding start point to the powder feeding end point, ensuring that the powder can be accurately filled into the mold cavity on the surface of the roller, and extending the powder feeding action time, thereby achieving the purpose of full filling;

[0026] 3. By closely coordinating the movement of the powder feeding mechanism with the rotation of the drum, powder waste or insufficient filling caused by speed mismatch is avoided, thereby improving the product qualification rate and overall production efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a servo-following powder feeding system for a rotating drum device according to an embodiment of this application.

[0028] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0029] Figure 3 This is a schematic diagram of the internal structure of the powder feeding mechanism in a servo-following powder feeding system for a rotating drum device according to an embodiment of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Roller; 11. Mold cavity; 2. Powder feeding mechanism; 21. Hopper; 22. Control component; 221. Vertical cylinder; 222. Sealing rod; 23. Material distribution seat; 231. Compartment; 232. Discharge port; 3. Servo drive mechanism; 31. Servo motor; 32. Ball screw; 4. Horizontal slide rail; 5. Blocking component. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a servo-following powder feeding system for a rotary drum device, referring to... Figure 1 and Figure 2 The system includes a powder dispensing mechanism 2 and a servo drive mechanism 3. The powder dispensing mechanism 2 is positioned above the roller 1 and is used to dispense powder into the mold cavity 11 on the surface of the roller 1. The servo drive mechanism 3 drives the powder dispensing mechanism 2 to reciprocate along the tangential direction of the roller 1's rotation. The two endpoints of the reciprocating movement path of the powder dispensing mechanism 2 are the powder dispensing start point and the powder dispensing end point, respectively. The powder dispensing mechanism 2 begins its powder dispensing action at the powder dispensing start point, and its forward movement speed is equal to the linear velocity of the roller 1's surface, ensuring that the powder dispensing mechanism 2 moves forward synchronously with the mold cavity 11 on the roller 1's surface. During its forward movement, the powder dispensing mechanism 2 continuously dispenses powder into the mold cavity 11. The powder dispensing mechanism 2 stops its powder dispensing action at the powder dispensing end point. By precisely controlling the movement speed of the powder dispensing mechanism 2 through the servo drive mechanism 3, its synchronization with the mold cavity 11 on the roller 1's surface is ensured, thereby effectively improving the accuracy of powder dispensing. Furthermore, after each powder feeding action is completed in a row of mold cavities 11, the servo drive mechanism 3 can drive the powder feeding mechanism 2 to quickly return to the powder feeding starting point and perform a new round of powder feeding operation, which helps to improve the smoothness of powder feeding. At the same time, this synchronous following design reduces powder waste, improves production efficiency, and ensures that each mold cavity 11 can be filled with powder evenly and fully.

[0033] Reference Figure 2 and Figure 3The powder dispensing mechanism 2 includes a hopper 21 for storing powder and a distribution seat 23 installed at the bottom of the hopper 21. The distribution seat 23 has several independent compartments 231 connected to the bottom opening of the hopper 21. Each compartment 231 has a discharge port 232 for discharging powder. The ends of the discharge ports 232 of the compartments 231 are vertically downward to facilitate dispensing. The discharge ports 232 of the compartments 231 are spaced apart along the axial direction of the roller 1. The powder dispensing mechanism 2 also includes a control component 22 for controlling the simultaneous opening or closing of the discharge ports 232. When the powder dispensing mechanism 2 performs the powder dispensing action, the discharge ports 232 of the compartments 231 are aligned one by one with several mold cavities 11 distributed axially along the roller 1. The control component 22 opens the discharge ports 232 to dispense the powder from the compartments 231 into the corresponding mold cavities 11.

[0034] The hopper 21 is constructed of stainless steel with a smooth inner wall to prevent powder adhesion. A feed inlet is located at the top of the hopper 21, fitted with a sealing cap to prevent dust entry. The bottom of the hopper 21 is conical, facilitating concentrated powder flow into the distribution seat 23. The distribution seat 23 is constructed with several compartments 231 spaced along the axis of the roller 1, exhibiting good dimensional accuracy and surface finish. The compartments 231 are cylindrical or square in shape and can be inclined, utilizing the powder's own weight for discharge. Discharge can be achieved by pushing the powder within the compartments 231 towards the outlet 232 using a push rod.

[0035] In this embodiment, the control component 22 includes a vertical cylinder 221 installed at the material distribution seat 23 and several blocking rods 222 disposed at the end of the vertical cylinder 221. The vertical cylinder 221 is fixed to the upper surface of the material distribution seat 23 by a bracket and is vertically downward. Each of the blocking rods 222 corresponds to one of the compartments 231, and the blocking rods 222 vertically penetrate into the corresponding compartment 231. The vertical cylinder 221 drives the blocking rods 222 to move up and down. The discharge port 232 of the compartment 231 is vertically downward, and the axis of the blocking rod 222 coincides with the axis of the discharge port 232 of the corresponding compartment 231. The control component 22 closes the discharge port 232 by blocking the discharge channel within the compartment 231 using the blocking rods 222, and opens the discharge port 232 by removing the blocking rods 222 from the discharge channel.

[0036] The vertical cylinder 221 features a compact design, small size, light weight, and easy installation. The piston rod is chrome-plated to improve wear resistance and corrosion resistance. The sealing rod 222 is made of stainless steel with a smooth surface to prevent scratching the inner wall of the compartment 231. The end of the sealing rod 222 is chamfered for easy insertion and removal from the discharge channel.

[0037] In this embodiment, a shielding member 5 is fixed to the outer periphery of the discharge port 232 of each compartment 231. When the discharge port 232 feeds powder into the corresponding mold cavity 11, the shielding member 5 shields the area around the opening of the mold cavity 11. This effectively prevents powder from overflowing or spilling outside the mold cavity 11, thereby improving the efficiency and cleanliness of powder feeding. The specific structural features of the shielding member 5 are as follows: the shielding member 5 is an elastic pad made of silicone or rubber, with good flexibility and resilience. The shielding member 5 is ring-shaped or rectangular and is fitted around the outer periphery of the discharge port 232. Due to the elasticity of the elastic pad, when the discharge port 232 feeds powder into the mold cavity 11, the elastic pad fits tightly against the area around the opening of the mold cavity 11, forming a good shielding effect and preventing powder from scattering. The thickness of the shielding member 5 is 2-5mm, which ensures a good sealing effect without affecting the movement of the powder feeding mechanism 2.

[0038] In addition, the servo-following powder feeding system also includes a mounting frame (not shown in the figure), with a horizontal slide rail 4 installed at the top of the mounting frame. The material distribution seat 23 of the powder feeding mechanism 2 is slidably connected to the horizontal slide rail 4. The horizontal slide rail 4 can be vertically adjusted along the height of the mounting frame to accommodate rollers 1 of different diameters. The specific structural features of the horizontal slide rail 4 are as follows: the slide rail is made of aluminum alloy with an anodized surface, providing excellent corrosion resistance and wear resistance. The slide rail has a dovetail or T-shaped cross-section, which cooperates with the slider at the bottom of the powder feeding mechanism 2 to ensure smooth movement of the powder feeding mechanism 2. The slider is made of a self-lubricating material to reduce friction, and ball bearings are embedded inside the slider to further improve sliding smoothness.

[0039] In this embodiment, the servo drive mechanism 3 is installed at the mounting bracket, specifically including a servo motor 31 and a ball screw 32 that drives the powder dispensing mechanism 2. The output shaft of the servo motor 31 is coaxially and fixedly connected to the ball screw 32. The servo motor 31 drives the ball screw 32 to rotate, thereby driving the powder dispensing mechanism 2 to move along the tangential direction of the rotation of the drum 1. The forward and reverse rotation of the servo motor 31 realizes the reciprocating motion function of the powder dispensing mechanism 2. The servo motor 31 can be replaced by a stepper motor or other types of precision motors, and the ball screw 32 can also be replaced by other forms of transmission structures, such as synchronous belt pulleys or gear and rack transmissions. The specific structural features of the ball screw 32 are as follows: the screw is made of high-strength alloy steel, and the surface is hardened, giving it good wear resistance and fatigue resistance. Both ends of the screw are fixed to the mounting bracket by bearing seats, which are deep groove ball bearings capable of withstanding radial and axial loads. The nut seat of the ball screw 32 is rigidly connected to the powder feeding mechanism 2. The nut seat has a ball circulation channel inside, in which the balls roll, reducing friction and improving transmission efficiency.

[0040] The servo-driven powder feeding system operates on the principle of precisely controlling the forward movement speed of the powder feeding mechanism 2 via the servo drive mechanism 3, ensuring it maintains the same linear velocity as the mold cavity 11 on the surface of the roller 1, thus achieving synchronous movement. When the powder feeding mechanism 2 retracts to the powder feeding starting point, the reverse speed of the servo motor 31 can be increased to allow the powder feeding mechanism 2 to quickly return to its original position, preparing for the feeding of powder into the next row of mold cavities 11. Furthermore, the material distribution seat 23 and control component 22 inside the powder feeding mechanism 2 work together to ensure accurate powder feeding into the mold cavity 11. The entire system has a simple structure, is easy to operate, significantly improves the accuracy of powder feeding and production efficiency, and solves the accuracy problem of relative movement between the powder feeding device and the mold cavity 11 of the roller 1 in existing technologies.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A servo-following powder feeding system for a rotating drum device, characterized in that, The device includes a powder feeding mechanism (2) and a servo drive mechanism (3). The powder feeding mechanism (2) is positioned above the roller (1) and is used to feed powder into the mold cavity (11) on the surface of the roller (1). The servo drive mechanism (3) is used to drive the powder feeding mechanism (2) to make a reciprocating motion along the tangential direction of the rotation of the roller (1). The two endpoints of the reciprocating movement path of the powder feeding mechanism (2) are the powder feeding start point and the powder feeding end point, respectively. The powder feeding mechanism (2) starts the powder feeding action at the powder feeding start point, and the forward movement speed of the powder feeding mechanism (2) is equal to the linear velocity of the surface of the roller (1), so that the powder feeding mechanism (2) moves forward synchronously with the mold cavity (11) to be filled on the surface of the roller (1). The powder feeding mechanism (2) continuously feeds powder into the mold cavity (11) to be filled during the forward movement. The powder feeding mechanism (2) stops the powder feeding action at the powder feeding end point.

2. The servo-following powder feeding system for a rotating drum device according to claim 1, characterized in that: The powder feeding mechanism (2) includes a hopper (21) for storing powder and a distribution seat (23) at the bottom of the hopper (21). The distribution seat (23) is provided with several independent compartments (231) that are connected to the bottom opening of the hopper (21). Each compartment (231) is provided with a discharge port (232) for discharging powder. The discharge ports (232) of the compartments (231) are distributed at intervals along the axial direction of the roller (1). The powder feeding mechanism (2) also includes a control component (22) for controlling the simultaneous opening or closing of the discharge ports (232). When the powder feeding mechanism (2) performs the powder feeding action, the discharge ports (232) of the compartments (231) are aligned one by one with the mold cavities (11) distributed along the axial direction of the roller (1). The control component (22) opens the discharge ports (232) to feed the powder in the compartments (231) into the corresponding mold cavities (11).

3. The servo-following powder feeding system for a rotating drum device according to claim 2, characterized in that: The control component (22) includes a vertical cylinder (221) located at the material distribution seat (23) and several blocking rods (222) located at the end of the vertical cylinder (221). The blocking rods (222) correspond one-to-one with several compartments (231), and the blocking rods (222) penetrate vertically into the corresponding compartments (231). The vertical cylinder (221) is used to drive the blocking rods (222) to move up and down. The control component (22) closes the discharge port (232) by blocking the discharge channel in the compartment (231) with the blocking rods (222), and opens the discharge port (232) by removing the blocking rods (222) from the discharge channel.

4. The servo-following powder feeding system for a rotating drum device according to claim 3, characterized in that: The discharge port (232) is set vertically downward, and a shielding member (5) is provided on the outer periphery of the discharge port (232). When the discharge port (232) puts powder into the corresponding mold cavity (11), the shielding member (5) shields the area around the opening of the mold cavity (11).

5. The servo-following powder feeding system for a rotating drum device according to claim 4, characterized in that: The shielding component (5) is an elastic pad.

6. The servo-following powder feeding system for a rotating drum device according to claim 1, characterized in that: The servo drive mechanism (3) includes a servo motor (31) and a ball screw (32) that is driven by the powder feeding mechanism (2). The output shaft of the servo motor (31) is coaxially and fixedly connected to the ball screw (32). The ball screw (32) is driven to rotate by the servo motor (31) so as to drive the powder feeding mechanism (2) to move along the tangential direction of the rotation of the roller (1).

7. The servo-following powder feeding system for a rotating drum device according to claim 1, characterized in that: It also includes a mounting bracket, on which a horizontal slide rail (4) is provided, and the powder feeding mechanism (2) is slidably connected to the horizontal slide rail (4).

8. The servo-following powder feeding system for a rotating drum device according to claim 7, characterized in that: The horizontal slide rail (4) can be vertically adjusted in the height direction of the mounting frame.

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