Cotton core forming device and method based on cellucotton

Abstract

The invention relates to the technical field of cotton core processing, in particular to a cotton core forming device based on cellucotton and a forming method.The device comprises a forming die wheel and a plurality of cavities formed in the forming die wheel, the cavities are provided with evenly-arranged air channels, and each air channel is internally provided with a plugging piece capable of moving in the axis direction of the air channel; an elastic piece is arranged on the plugging piece, a limiting step is arranged at the end, away from the cavity, of the air channel, an adsorption mechanism connected with all the air channels is arranged in the forming die wheel, a positioning assembly capable of fixing the plugging piece on the limiting step is further arranged on the adsorption mechanism, and the mobility of the plugging piece is achieved through cooperation of the elastic piece and adsorption force. The air channel is dynamically opened or blocked according to the adsorption requirement, the fiber suction amount of each cavity is accurately controlled, and the problem of uneven thickness caused by traditional fixed-aperture adsorption is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cotton core processing, and in particular to a cotton core forming device and a forming method based on fiber cotton. Background Art

[0002] In the disposable sanitary products market, the core competitiveness of products such as baby pants and sanitary napkins is highly dependent on the quality and cost control of cotton cores. The absorption performance of the cotton core is closely related to its thickness distribution. A reasonable design of the thickness of each part can not only improve the absorption capacity of the product, but also optimize material utilization and reduce costs. In the existing cotton core forming technology, Chinese Patent Authorization Announcement No. CN106264872B discloses a cotton core forming device, including a grinder, a forming die wheel and a cotton core forming channel connecting the two. By arranging the first and second air inlets and the corresponding air flow adjustment device on the channel, an attempt is made to achieve differentiated forming of the cotton core thickness by controlling the air flow distribution. However, such solutions still have defects in practical applications, such as insufficient accuracy and stability of air flow adjustment. Existing devices rely on first and second air inlets set perpendicular to each other and supporting airflow adjustment devices (such as base plates, through holes, sliding covers and other mechanical structures) to control the size and distribution of airflow. However, the airflow in the cotton core forming channel is easily affected by factors such as the bending angle of the arc-shaped air guide plate, resulting in interference between airflows in different areas, making it difficult to accurately match the movement trajectory of the fibers in the channel, and ultimately causing local thickness deviations in the cotton core (such as uneven thickness at the edges and middle), affecting the uniformity of the absorption performance. Summary of the Invention

[0003] To address the above problems, a cotton core forming device and forming method based on fiber cotton are provided. Through the coordination of elastic parts and adsorption force, the mobility of the blocking parts is achieved, so that the airway can be dynamically opened or blocked according to the adsorption requirements, and the fiber suction amount of each cavity can be accurately controlled, avoiding the uneven thickness problem caused by traditional fixed aperture adsorption.

[0004] In order to solve the problems of the prior art, the present invention provides a cotton core forming device based on fiber cotton, comprising a forming die wheel and a plurality of cavities arranged on the forming die wheel, the cavities are provided with evenly arranged air ducts, and each air duct is provided with a sealing part that can move along the axis of the air duct; an elastic part is provided on the sealing part, and the elastic part is used to support the sealing part to seal the end of the air duct close to the cavity, and a channel connecting the front and rear chambers of the sealing part is provided on the inner wall of the air duct; a limiting step is provided on the end of the air duct away from the cavity; an adsorption mechanism connected to all air ducts is provided in the forming die wheel, and the adsorption mechanism is used to drive the sealing part to move toward the limiting step through adsorption force, so that the air duct is opened to adsorb the fiber until the sealing part moves to the limiting step to perform secondary sealing on the air duct; the adsorption mechanism is also provided with a positioning component that can fix the sealing part on the limiting step.

[0005] Preferably, the adsorption mechanism includes an air suction box and first pipes, the number of which is the same as that of the cavities and corresponds one to one, and a second pipe connected to the first pipe is provided at the bottom of the cavity.

[0006] Preferably, a plurality of air holes for adsorbing the cotton core are provided on the mold cavity, a partition is provided in the mold cavity, the partition divides the mold cavity into a first adsorption chamber and a second adsorption chamber, the second pipe passes through the second adsorption chamber and is connected to the first adsorption chamber, an air pipe passing through the partition is provided on the air hole and is connected to the second adsorption chamber, and the second adsorption chamber is connected to an external suction device.

[0007] Preferably, the second adsorption chamber is provided with a third pipe connected to the second pipe, and the third pipe is provided with a solenoid valve.

[0008] Preferably, the positioning assembly includes an electromagnet sleeved on one end of the airway away from the cavity, and the blocking piece is made of ferromagnetic material. When the electromagnet is energized, it can absorb the blocking piece and fix its position.

[0009] Preferably, a first feeding device for feeding the cavity is provided above the forming die wheel, and the first feeding device comprises a material guide box and a conveyor belt provided on a side wall of the material guide box.

[0010] Preferably, a second feeding device having a structure completely consistent with that of the first feeding device is further provided above the forming die wheel, and a gap is provided between the first feeding device and the second feeding device.

[0011] Preferably, a visual inspection device is further provided between the first feeding device and the second feeding device, and the first feeding device and the second feeding device are provided on both sides of the visual inspection device in a mirror-symmetrical state.

[0012] Preferably, a conveyor belt for receiving the cotton core is provided below the forming die wheel.

[0013] A cotton core forming method based on fiber cotton, applied to the above-mentioned cotton core forming device based on fiber cotton, comprises the following steps:

[0014] S1. The forming die wheel is started, and the forming die wheel drives multiple cavities to enter the loading area in sequence. At this time, the elastic part in the air passage of the cavity supports the blocking part, so that the blocking part forms an initial blocking on the air passage.

[0015] S2. When the cavity enters the loading area, the adsorption mechanism starts and generates adsorption force. The adsorption mechanism drives the blocking piece to move along the airway axis toward the limit step. At this time, the channel on the airway is opened, and the adsorption force passes through the channel so that the area above the blocking piece on the airway has adsorption force, and the fibers in the loading area are sucked into the cavity.

[0016] S3. When the blocking piece moves to the limit step and abuts against it, the blocking piece forms a secondary blockage on the airway, and the positioning component starts to fix the position of the blocking piece, causing the channel to lose its adsorption force. At this time, the airway stops adsorbing the fiber, and the molding die wheel continues to rotate, bringing the cavity that has completed a single adsorption away from the loading area.

[0017] S4a, check whether the blocking parts in the air passages of each cavity have moved to the limit steps.

[0018] S4b. If there is a cavity that does not meet the standards, the cavity will enter the loading area again as the molding die wheel rotates, and steps S2-S3 are repeated until all the sealing parts are in place.

[0019] S4c. If all cavities meet the standards, the molding die wheel continues to rotate and the cavities that have completed fiber adsorption are sequentially transported to subsequent processes to form a cotton core with uniform thickness.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention realizes the mobility of the blocking member through the coordination of the elastic member and the adsorption force, so that the airway can be dynamically opened or blocked according to the adsorption demand, and the fiber suction amount of each cavity can be accurately controlled to avoid the uneven thickness problem caused by the traditional fixed aperture adsorption. In order to address the uneven adsorption force or fiber distribution differences that may occur during the suction process, through the rotation cycle of the molding die wheel, the substandard cavities can enter the loading area for repeated adsorption multiple times until all the blocking members are in place, which significantly improves the uniformity of the thickness of each area of the cotton core. The setting of the limiting step and the positioning component ensures that the blocking member is reliably fixed after the adsorption is completed, avoids the resetting of the elastic member to interfere with the adsorption state, and cooperates with the continuous rotation of the molding die wheel to realize the automated continuous production of cotton core molding and improve processing efficiency.

[0022] 2. This invention utilizes a phased operation mode of air channels and pores, enabling efficient and orderly execution of the two key steps of fiber adsorption and wick fixation. The air channels focus on fiber adsorption and initial wick formation, while the pores provide auxiliary fixation when needed. This prevents unnecessary airflow interference during the adsorption process that could affect wick formation quality, while also improving the efficiency of the entire forming process.

[0023] 3. By arranging the first and second feeding devices and the visual inspection device, the present invention eliminates the need for complex cavity rotation or waiting. Initial feeding, inspection, and corrective feeding can be completed during the continuous rotation of the forming die wheel, shortening the production cycle and improving production efficiency. The inspection device can accurately detect the molding quality of the cotton core in the mold cavity in real time, providing accurate correction basis for the second feeding device. By accurately identifying and locating cotton core defects, the second feeding device can carry out targeted feeding, improving the molding quality and uniformity of the cotton core and reducing the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of a cotton core forming device and a conveyor belt based on fiber cotton.

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of a cotton core forming device based on fiber cotton.

[0026] Figure 3 It is a top view of a cotton core forming device based on fiber cotton.

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of a cotton core forming device based on fiber cotton.

[0028] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of a cotton core forming device based on fiber cotton.

[0029] Figure 6 yes Figure 4 Enlarged view of point A in the middle.

[0030] Figure 7 yes Figure 5 Enlarged view of point B in the middle.

[0031] Figure 8 It is a schematic diagram of the cross-sectional structure of a cavity in a cotton core molding device based on fiber cotton.

[0032] Figure 9 yes Figure 8 Enlarged view of point C in the middle.

[0033] Figure 10 It is a schematic diagram of the three-dimensional structure of a molding die wheel in a cotton core molding device based on fiber cotton.

[0034] Figure 11 It is an exploded view of the cavity in a cotton core molding device based on fiber cotton.

[0035] Figure 12 It is an exploded view of the cavity in a cotton core molding device based on fiber cotton.

[0036] The numbers in the figure are:

[0037] 1. Molding die wheel; 11. Cavity; 111. Second pipeline; 1111. First adsorption chamber; 112. Air hole; 1121. Air pipe; 113. Partition; 114. Second adsorption chamber; 1141. Third pipeline; 1142. Solenoid valve; 12. Adsorption mechanism; 121. Suction box; 1211. First pipeline; 13. First feeding device; 131. Material guide box; 132. Conveyor belt; 133. Second feeding device; 14. Visual inspection device; 15. Conveyor belt; 2. Air duct; 21. Sealing part; 211. Elastic part; 22. Limiting step; 23. Positioning assembly; 231. Electromagnet. DETAILED DESCRIPTION

[0038] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1 to 9 As shown: A cotton core forming device based on fiber cotton, comprising a forming die wheel 1 and a plurality of cavities 11 arranged on the forming die wheel 1, the cavities 11 are provided with evenly arranged air channels 2, each of which is provided with a blocking member 21 that can move along the axis of the air channel 2; an elastic member 211 is provided on the blocking member 21, and the elastic member 211 is used to support the blocking member 21 to block the end of the air channel 2 close to the cavity 11, and a cavity connecting the front and rear cavities of the blocking member 21 is provided on the inner wall of the air channel 2 The air channel 2 is provided with a limiting step 22 at one end away from the cavity 11; an adsorption mechanism 12 connected to all the air channels 2 is provided in the molding die wheel 1, and the adsorption mechanism 12 is used to drive the blocking member 21 to move toward the limiting step 22 through the adsorption force, so that the air channel 2 is opened to adsorb the fiber until the blocking member 21 moves to the limiting step 22 to block the air channel 2; the adsorption mechanism 12 is also provided with a positioning component 23 that can fix the blocking member 21 on the limiting step 22.

[0040] The molding die wheel 1 drives multiple cavities 11 to pass through the loading area in sequence through rotation. When the cavity 11 enters the loading area, the adsorption mechanism 12 is activated. The adsorption mechanism 12 is preferably set as a negative pressure adsorption mechanism, such as a vacuum pump, a negative pressure gas source, etc., and the adsorption force generated by the adsorption mechanism 12 acts on the blocking member 21. In the initial state, the elastic member 211 supports the blocking member 21 so that it is close to one end of the cavity 11 on the airway 2, forming an initial blockage. After the adsorption force is generated, the blocking member 21 will overcome the supporting force of the elastic member 211, and the adsorption force will drive the blocking member 21 to move along the axis of the airway 2 toward the end away from the cavity 11, that is, toward the limit step 22. At this time, the elastic member 211 is compressed. As the blocking piece 21 leaves the blocking position in the initial state, multiple channels on the inner wall of the airway 2 are opened, that is, the spaces at both ends of the blocking piece 21 in the airway 2 are connected. At this time, since the blocking piece 21 has not moved to the limit step 22, the adsorption force can pass through the channel to generate suction in the area above the blocking piece 21, thereby generating suction at the end of the airway 2 close to the cavity, and sucking the fibers in the loading area into the cavity 11.

[0041] When the blocking piece 21 moves to the limit step 22 and abuts against it, the blocking piece 21 blocks the airway 2 for the second time. At this time, because the limit step 22 is blocked by the blocking piece 21, the adsorption force cannot be transmitted to the area above the blocking piece 21, causing the airway to lose its adsorption force. At the same time, the positioning component 23 is started. The positioning component 23 preferably uses an electromagnetic adsorption structure. The positioning component 23 will fix the blocking piece 21 located at the limit step 22 to prevent the elastic piece 211 from resetting and driving the blocking piece 21 to move back, causing the airway 2 to lose its adsorption force. Figure 9 The arrow in the middle indicates the direction of air flow.

[0042] Due to factors such as fiber bulkiness and fluctuations in adsorption force, some blocking members 21 may not fully move to the limiting step 22, resulting in insufficient material absorption in the corresponding cavity 11. Whether the blocking member 21 has moved to the limiting step 22 is used to determine whether the material absorption effect is complete. At this time, the forming die wheel 1 continues to rotate and moves back to the feeding area, or the forming die wheel 1 adjusts the time it stays in the feeding area until all blocking members 21 move to the limiting step 22 and are secured by the positioning assembly 23, thereby achieving uniform absorption of the fibers in the cavity 11.

[0043] Through the coordination of the elastic member 211 and the adsorption force, the mobility of the blocking member 21 is achieved, so that the airway 2 is dynamically opened or blocked according to the adsorption demand, and the fiber suction amount of each cavity 11 is accurately controlled. The adsorption amount is determined by the movement time of the blocking member 21, avoiding the uneven thickness problem caused by traditional fixed aperture adsorption. It should be noted that the cavity 11 in the figure is shown as a curved surface that matches the molding die wheel 1, and the lengths and distances of the airways 2 inside it are inconsistent. At this time, the elastic force of the elastic member 211 will be replaced or adjusted to ensure that the time zone for the movement of each blocking member 21 is consistent. The figure is only a schematic state, and all airways can also be set to the same length. In response to the uneven adsorption force or fiber distribution differences that may occur during the suction process, through the rotation cycle of the molding die wheel 1, the substandard cavity 11 can enter the loading area for repeated adsorption multiple times until all the blocking members 21 are in place, significantly improving the uniformity of the thickness of each area of the cotton core. The placement of the limiting step 22 and positioning assembly 23 ensures that the blocking member 21 is securely fixed after adsorption is complete, preventing the elastic member 211 from resetting and interfering with the adsorption state. Combined with the continuous rotation of the forming die wheel 1, this enables automated and continuous production of the cotton core, improving processing efficiency. Dynamically controlling the opening and closing of the airway 2 ensures that fiber density in the core area is maintained while reducing fiber redundancy in non-critical areas such as the edges. This improves the cotton core's absorbency while reducing material costs and enhancing the product's market competitiveness.

[0044] like Figure 2 、 Figures 4 to 11 As shown, the adsorption mechanism 12 includes an air suction box 121 and first pipes 1211 , the number of which is the same as and corresponds to the number of the cavities 11 , and a second pipe 111 connected to the first pipe 1211 is provided at the bottom of the cavity 11 .

[0045] A mounting tube is provided on the suction box 121. This tube is connected to an external suction mechanism (not shown), such as a vacuum pump or negative pressure air source, via a pneumatic slip ring (not shown). The pneumatic slip ring allows the forming die wheel 1 to rotate continuously while keeping the suction box 121 stationary. This ensures a stable connection between the mounting tube and the external suction mechanism and prevents distortion or leakage in the tube caused by the rotation of the forming die wheel 1.

[0046] A second pipe 111 is provided at the bottom of each cavity 11. This second pipe 111 is connected to the suction box 121 via the first pipe 1211, forming an adsorption path from the external suction mechanism to the airway 2 of the cavity 11. When the cavity 11 enters the loading area along with the molding die wheel 1, the external suction mechanism applies negative pressure to the suction box 121 via the mounting pipe. The suction force is transmitted to the airway 2 of the cavity 11 via the first pipe 1211 and the second pipe 111. This adsorption force drives the blocking member 21 to overcome the resistance of the elastic member 211 and move toward the limiting step 22, compressing the elastic member 211 and opening the airway 2. The fiber is then drawn into the cavity 11 under the action of the negative pressure.

[0047] The suction box 121 is quickly connected to the mold cavity 11 via a first conduit 1211 and a second conduit 111. The pneumatic slip ring utilizes standardized components, facilitating equipment installation, commissioning, and subsequent maintenance, reducing downtime and maintenance costs. Even when the mold wheel 1 rotates at high speeds, the pneumatic slip ring maintains a sealed connection, meeting the high speed and high stability requirements of industrial continuous production. It also allows for independent maintenance of individual mold cavities 11 without disrupting the overall production process.

[0048] like Figures 4 to 12 As shown: a plurality of air holes 112 for adsorbing the cotton core are provided on the mold cavity 11, a partition 113 is provided in the mold cavity 11, the partition 113 divides the mold cavity 11 into a first adsorption chamber 1111 and a second adsorption chamber 114, the second pipe 111 passes through the second adsorption chamber 114 and is connected to the first adsorption chamber 1111, an air pipe 1121 passing through the partition 113 and is connected to the second adsorption chamber 114, and the second adsorption chamber 114 is connected to an external suction device.

[0049] During the cotton core molding process, the air holes 112 on the cavity 11 act as independent air path units, cooperating with the adsorption process of the air channel 2. In the initial stage, the air channel 2 is the main channel for fiber adsorption. When the molding die wheel 1 rotates and the cavity 11 enters the feeding area, the adsorption mechanism 12 starts, and the generated adsorption force drives the blocking member 21 to overcome the holding force of the elastic member 211, so that the blocking member 21 moves along the axis of the air channel 2 toward the limit step 22. As the blocking member 21 shifts, the channel on the air channel 2 is opened. At this time, a sufficiently strong adsorption force is formed in the cavity 11, and the fibers in the feeding area are brought into the cavity 11. In this process, the adsorption force of the air channel 2 not only completes the preliminary molding of the cotton core, but also ensures the stable position of the cotton core in the cavity 11. At this stage, the air hole 112 is in a closed state, serving only as a spare fixed structure and does not participate in the fiber suction process.

[0050] When all the blocking pieces 21 are moved to the limit step 22, it means that the adsorption process of the cotton core has been completed. At this time, the blocking piece 21 blocks the airway 2, causing the cavity 11 to lose the adsorption force on the cotton core originally provided by the airway 2. In particular, when the molding die wheel 1 drives the cotton core that has already adsorbed the fibers to rotate to the lower half of the molding die wheel 1, the cotton core faces the risk of falling off or shifting due to the influence of gravity. In order to cope with this situation, multiple air holes 112 will be started, and the external suction device will start working, connecting with the second adsorption chamber 114, generating negative pressure in the second adsorption chamber 114. This negative pressure passes through the air pipe 1121 of the partition 113 and is transmitted to each air hole 112, so that the air hole 112 generates adsorption force, firmly fixing the cotton core on the cavity 11. This provides stable conditions for the subsequent cotton core pressing step, effectively offsets the influence of gravity on the cotton core, and prevents the cotton core from falling off or shifting.

[0051] The phased operation of air channel 2 and air holes 112 ensures efficient and orderly execution of the two key steps of fiber absorption and wick fixation. Air channel 2 focuses on fiber absorption and initial wick formation, while air holes 112 provide auxiliary fixation when needed. This prevents unnecessary airflow interference during the absorption process that could affect wick formation quality, while improving the efficiency of the entire forming process.

[0052] The air holes 112 are activated after the cotton core is completely adsorbed and the air channel 2 loses its adsorption force, effectively offsetting the effect of gravity on the cotton core. This reduces the risk of the cotton core falling off or shifting during rotation, ensures the stability of the cotton core throughout the molding process, provides a good foundation for subsequent pressing operations, and improves the product qualification rate.

[0053] As an independent air path unit, the start and close of the air hole 112 are not affected by the adsorption process of the air channel 2, so that the operation of the air hole 112 can be precisely controlled according to actual conditions. For example, the adsorption force generated by the air hole 112 can be flexibly adjusted according to factors such as the weight of the cotton core and the rotation speed of the forming die wheel 1 to adapt to different production needs, thereby enhancing the versatility and adaptability of the equipment.

[0054] like Figures 5 to 12 As shown, the second adsorption chamber 114 is provided with a third pipe 1141 connected to the second pipe 111 , and the third pipe 1141 is provided with a solenoid valve 1142 .

[0055] When the mold wheel 1 rotates and drives the mold cavity 11 into the loading area, the solenoid valve 1142 opens the circuit, connecting the external suction device to the second pipe 111 on the first adsorption chamber 1111. This allows the second adsorption chamber 114 to generate an adsorption force, driving the blocking member 21 to move through the channel on the airway 2. Under the action of negative pressure, the fiber is drawn into the mold cavity 11 through the airway 2, completing the initial molding process. At this time, the air hole 112 remains closed, and the airway is focused on fiber adsorption, avoiding interference.

[0056] When all the sealing parts 21 are in place and fixed, the solenoid valve 1142 switches the air circuit and disconnects the circuit with the second adsorption chamber 114. The negative pressure of the external suction device is connected to the second adsorption chamber 114 through the third pipe 1141, causing the air hole 112 to generate an adsorption force. When the cavity 11 rotates to the lower half of the mold with the molding die wheel 1, the adsorption force of the air hole 112 presses the cotton core against the wall of the cavity 11, offsetting the influence of gravity and ensuring that the cotton core is stably fixed before pressing to prevent it from falling off or shifting. The airway 2 remains closed due to the sealing of the sealing part 21, and is completely isolated from the air path of the air hole 112, without interfering with each other.

[0057] Solenoid valve 1142 switches the air path, enabling independent operation of airway 2 and air hole 112. This prevents functional conflicts between individual air paths at different stages and ensures stable and orderly operation of each process. Phased air path control and a dual fixation mechanism ensure that the cotton wick maintains a stable shape throughout the entire process from adsorption to compression, reducing waste and downtime caused by displacement or shedding, ensuring continuous production line operation, and providing reliable support for the automated production of high-quality cotton wicks.

[0058] like Figures 4 to 12 As shown: the positioning component 23 includes an electromagnet 231 sleeved on the end of the airway 2 away from the cavity 11, and the blocking piece 21 is made of ferromagnetic material. When the electromagnet 231 is energized, it can absorb the blocking piece 21 and fix its position.

[0059] When the cavity 11 enters the loading area, the adsorption mechanism 12 generates negative pressure, driving the blocking piece 21 to move toward the limit step 22. The limit step 22 can be aligned with the end of the blocking piece 21 through an integrated position sensor, such as a micro switch, a proximity sensor, etc. When the blocking piece 21 moves with the airflow to the limit step 22 and abuts against it, the sensor is triggered and generates a signal to the control system at the back end. After receiving the signal, the control system immediately sends a power-on command to the electromagnet 231. After being energized, the electromagnet 231 generates a strong magnetic field, which applies an adsorption force to the blocking piece 21 made of ferromagnetic material, so that it fits tightly to the surface of the limit step 22. Ensure the sealing effect of the airway 2, and at the same time prevent the elastic piece 211 from driving the blocking piece 21 to reset. When the cavity 11 completes the fiber adsorption and leaves the loading area, the control system sends a power-off command based on the position signal of the molding die wheel 1, such as encoder feedback, and the electromagnet 231 loses its magnetism. The blocking member 21 is reset to the initial blocking position under the action of the elastic member 211 , and the sensor simultaneously detects the reset state, preparing for the next cycle of adsorption.

[0060] By setting the positioning component 23, the sealing member 21 is ensured to be reliably fixed after being adsorbed into place, avoiding position deviation caused by fatigue of the elastic member 211 or fluctuation of the adsorption force. Compared with the traditional mechanical snap-fit structure, the positioning accuracy is improved and there is no risk of mechanical wear.

[0061] like Figures 1 to 5 As shown, a first loading device 13 for loading materials into the cavity 11 is provided above the molding die wheel 1 . The first loading device 13 includes a material guide box 131 and a conveyor belt 132 provided on the side wall of the material guide box 131 .

[0062] A conveyor belt 132, operating at a constant or adjustable speed, continuously conveys external fiber raw materials, such as cotton pulp and non-woven fabrics, into a guide box 131. The bottom opening of the guide box 131 aligns with the loading area of the forming die wheel 1. When the mold cavity 11 rotates with the forming die wheel 1 and moves below the guide box 131, the suction mechanism 12 is activated. The fibers transported by the conveyor belt 132 form a loose layer at the opening of the guide box 131. The negative pressure generated by the air passage 2 or air holes 112 of the mold cavity 11 flows through the gap between the guide box 131 and the fiber layer, drawing the fibers directly into the mold cavity 11.

[0063] The inside of the material guide box 131 may also be provided with a diversion slope or a breaking structure (not shown in the figure), so that the fibers are evenly distributed at the bottom opening of the material guide box 131 under the action of gravity and the thrust of the conveyor belt 132 to avoid agglomeration or accumulation.

[0064] The combination of the material guide box 131 and the conveyor belt 132 pre-disperses the fiber raw materials into a uniform material layer, avoiding the problem of uneven fiber accumulation caused by traditional manual loading or free fall, so that the fiber density contacted by each cavity 11 during the adsorption process is consistent, thereby improving the uniformity of the cotton core thickness and gram weight from the source.

[0065] The feeding device is integrated directly above the forming die wheel 1, and utilizes the top space of the equipment to form a vertical feeding path. Compared with the feeding from below, it reduces the fiber loss caused by pipeline transmission, and at the same time makes the structure of the entire forming device more compact, reducing the equipment's footprint.

[0066] like Figures 1 to 5 As shown, a second feeding device 133 having the same structure as the first feeding device 13 is provided above the forming die wheel 1 , and a gap is provided between the first feeding device 13 and the second feeding device 133 .

[0067] After the mold cavity 11 rotates away from the first feeding device 13 along with the mold wheel 1, it determines whether the cotton core has a partial under-absorption or uneven accumulation problem. If uneven cotton core is detected, the control system immediately triggers the second feeding device 133 to start, and its conveyor belt 132 delivers the same fiber as the first feeding device 13. At this time, the suction mechanism 12 remains in operation, and the blocking member 21 that is not fully in place moves again under the action of the suction force, opening the channel on the airway 2, allowing the fiber from the second feeding device 133 to be absorbed into the under-absorption area through the airway 2.

[0068] Because the second loading device 133 and the first loading device 13 are both located above the mold wheel 1, the mold cavity 11 does not need to wait for the mold wheel 1 to complete a full rotation. It can be corrected by simply passing through the gap under the second loading device 133. After correction, the mold cavity 11 continues to rotate and enter the subsequent process without returning to the first loading device 13.

[0069] like Figures 1 to 5As shown, a visual inspection device 14 is further provided between the first loading device 13 and the second loading device 133 , and the first loading device 13 and the second loading device 133 are provided on both sides of the visual inspection device 14 in a mirror-symmetrical state.

[0070] After the mold cavity 11 passes through the first loading device 13, the mold wheel 1 rotates to the position below the visual inspection device 14. This device quickly and accurately inspects the appearance, thickness, and density distribution of the cotton core within the mold cavity 11. The device transmits the captured image information to the control system, which analyzes and evaluates the molding quality of the cotton core using preset algorithms and standard parameters. It determines whether the core has any problems such as unevenness, material shortages, or impurities, and accurately identifies the location and extent of any defects.

[0071] If the visual inspection device 14 detects unevenness or other defects in the cotton core, the control system will issue instructions to the second feeding device 133 based on the detection results. Because the first and second feeding devices 13, 133 are arranged in mirror-image symmetry on either side of the visual inspection device 14, the second feeding device 133 can respond quickly. Its conveyor belt 132 transports the fiber, and the suction mechanism 12 operates again, precisely replenishing the fiber to the defective areas of the cotton core in the mold cavity 11, thereby correcting the cotton core molding quality. If the visual inspection shows that the cotton core quality is acceptable, the second feeding device 133 can be deactivated or fine-tuned to further optimize the cotton core quality.

[0072] Visual inspection device 14 can accurately and in real time detect the molding quality of the cotton core within cavity 11, providing accurate correction information for second feeding device 133. By accurately identifying and locating cotton core defects, second feeding device 133 can provide targeted replenishment, improving the molding quality and uniformity of the cotton core and reducing the defective rate.

[0073] The mold cavity 11 does not need to perform complicated turnover or waiting, and the initial loading, inspection and correction loading can be completed during the continuous rotation of the molding die wheel 1, which shortens the production cycle and improves production efficiency.

[0074] like Figure 1 As shown: a conveyor belt 15 for receiving the cotton core is provided below the forming die wheel 1.

[0075] When cavity 11 rotates with mold wheel 1 to the bottom demolding area, air channel 2 back-blows the molded cotton core away from the inner wall of cavity 11. Conveyor belt 15 runs at a speed consistent with the linear velocity of the mold wheel, ensuring that the cotton core is smoothly received at the moment of demolding, avoiding deformation or tearing caused by gravity or speed differences. Conveyor belt 15 receives the demolded cotton core and transports it directly to subsequent processes, eliminating the efficiency bottlenecks caused by traditional manual material connection or intermittent transfer. It seamlessly connects the high-speed rotation of mold wheel 1 with downstream processes, improving production efficiency.

[0076] like Figures 1 to 9 As shown: A cotton core forming method based on fiber cotton, applied to the above-mentioned cotton core forming device based on fiber cotton, includes the following steps:

[0077] S1. The forming die wheel 1 is started, and the forming die wheel 1 drives multiple cavities 11 to enter the loading area in sequence. At this time, the elastic member 211 in the air passage 2 of the cavity 11 presses the blocking member 21, so that the blocking member 21 forms an initial blocking on the air passage 2.

[0078] S2. When the cavity 11 enters the loading area, the adsorption mechanism 12 starts and generates adsorption force. The adsorption mechanism 12 drives the blocking piece 21 to move along the axis of the airway 2 toward the limiting step 22. At this time, the channel on the airway 2 is opened, and the adsorption force passes through the channel so that the area above the blocking piece on the airway 2 has adsorption force, and the fibers in the loading area are sucked into the cavity 11.

[0079] S3. When the blocking piece 21 moves to the limiting step 22 and abuts against it, the blocking piece 21 forms a secondary blockage on the airway 2, and the positioning assembly 23 is activated to fix the position of the blocking piece 21, so that the channel loses its adsorption force. At this time, the airway 2 stops adsorbing fibers, and the molding die wheel 1 continues to rotate, bringing the cavity 11 that has completed a single adsorption away from the loading area.

[0080] S4a, checking whether the blocking members 21 in the air passages 2 of the cavities 11 have all moved to the limiting steps 22 .

[0081] S4b. If there is a cavity 11 that does not meet the standards, the cavity 11 is allowed to enter the loading area again as the molding die wheel 1 rotates, and steps S2-S3 are repeated until all the blocking pieces 21 are in place.

[0082] S4c. If all the cavities 11 meet the standards, the molding die wheel 1 continues to rotate, and the cavities 11 that have completed fiber adsorption are sequentially transported to subsequent processes to form a cotton core with uniform thickness.

[0083] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A cotton core forming device based on fiber cotton, comprising a forming die wheel and a plurality of cavities arranged on the forming die wheel, characterized in that: The cavity is provided with evenly arranged air channels, and each air channel is provided with a blocking member that can move along the air channel axis; The blocking piece is provided with an elastic piece, which is used to hold the blocking piece against the end of the airway close to the cavity to block the airway. The inner wall of the airway is provided with a channel connecting the front and rear chambers of the blocking piece. A limiting step is provided on one end of the airway away from the cavity, and an adsorption mechanism connected to all the airways is provided in the molding die wheel. The adsorption mechanism is used to drive the blocking piece to move toward the limiting step through adsorption force, so that the airway is open to adsorb fibers until the blocking piece moves to the limiting step to perform a secondary blocking of the airway. The adsorption mechanism is also provided with a positioning component which can fix the blocking piece on the limiting step.

2. A cotton core forming device based on fiber cotton according to claim 1, characterized in that: The adsorption mechanism includes an air suction box and first pipes, the number of which is the same as that of the cavities and corresponds one to one. The bottom of the cavity is provided with a second pipe connected to the first pipe.

3. A cotton core forming device based on fiber cotton according to claim 2, characterized in that: The mold cavity is provided with a plurality of air holes for adsorbing the cotton core, and a partition is provided in the mold cavity, which divides the mold cavity into a first adsorption chamber and a second adsorption chamber. The second pipe passes through the second adsorption chamber and is connected to the first adsorption chamber. An air pipe passing through the partition is provided on the air hole and is connected to the second adsorption chamber, and the second adsorption chamber is connected to an external suction device.

4. A cotton core forming device based on fiber cotton according to claim 3, characterized in that: The second adsorption chamber is provided with a third pipeline connected with the second pipeline, and the third pipeline is provided with a solenoid valve.

5. The cotton core forming device based on fiber cotton according to claim 1, characterized in that: The positioning component includes an electromagnet sleeved on one end of the airway away from the cavity. The blocking piece is made of ferromagnetic material. When the electromagnet is energized, it can absorb the blocking piece and fix its position.

6. The cotton core forming device based on fiber cotton according to claim 1, characterized in that: A first feeding device for feeding the cavity is provided above the forming die wheel. The first feeding device comprises a material guide box and a conveyor belt provided on a side wall of the material guide box.

7. A cotton core forming device based on fiber cotton according to claim 6, characterized in that: A second feeding device having the same structure as the first feeding device is also provided above the forming die wheel, and a gap is provided between the first feeding device and the second feeding device.

8. A cotton core forming device based on fiber cotton according to claim 7, characterized in that: A visual inspection device is further provided between the first feeding device and the second feeding device. The first feeding device and the second feeding device are provided on both sides of the visual inspection device in a mirror-symmetrical state.

9. The cotton core forming device based on fiber cotton according to claim 1, characterized in that: A conveyor belt for receiving the cotton core is provided below the forming die wheel.

10. A method for forming a cotton core based on fiber cotton, applied to a cotton core forming device based on fiber cotton according to any one of claims 1 to 9, characterized in that: The following steps are included: S1. The forming die wheel starts and drives multiple cavities into the loading area in sequence. At this time, the elastic member in the cavity airway presses against the blocking member, so that the blocking member forms an initial blocking on the airway; S2. When the cavity enters the feeding area, the suction mechanism starts and generates suction force, driving the blocking piece to move along the airway axis toward the limit step. At this time, the passage on the airway is opened, and the suction force through the passage makes the area above the blocking piece on the airway have suction force, sucking the fibers in the feeding area into the cavity. S3. When the blocking piece moves to the limit step and contacts it, it forms a secondary blockage on the airway. The positioning assembly starts to fix the blocking piece, causing the channel to lose its adsorption force. At this time, the airway stops adsorbing fibers, and the molding die wheel continues to rotate, carrying the cavity that has completed a single adsorption process away from the loading area. S4a, checking whether the blocking parts in the air passages of each cavity have moved to the limit steps; S4b, if there is a cavity that does not meet the standard, the cavity is re-entered into the loading area as the molding die wheel rotates, and steps S2-S3 are repeated until all the blocking parts are in place; S4c. If all cavities meet the standards, the molding die wheel continues to rotate and the cavities that have completed fiber adsorption are sequentially transported to subsequent processes to form a cotton core with uniform thickness.

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