A fiber cotton-based cotton core forming device and forming method

Abstract

The application relates to the technical field of cotton core processing, in particular to a cotton core forming device and method based on fiber cotton, which comprises a forming die wheel and a plurality of cavities arranged on the forming die wheel, air channels are arranged on the cavities in a uniform manner, a plugging piece capable of moving along the air channel axis direction is arranged in each air channel; an elastic piece is arranged on the plugging piece, a limiting step is arranged at the end of the air channel away from the cavity, 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, the movability of the plugging piece is realized through the cooperation of the elastic piece and the adsorption force, the air channels are dynamically turned on or plugged according to the adsorption demand, the fiber suction amount of each cavity is accurately controlled, and the thickness uneven problem caused by the traditional fixed aperture adsorption is avoided.

Description

TECHNICAL FIELD

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

[0002] In the disposable hygiene product market, the core competitiveness of products such as baby pants and sanitary napkins is highly dependent on the quality and cost control of the cotton core. The absorption performance of the cotton core is closely related to its thickness distribution, and reasonable design of the thickness of each part can not only improve the absorption capacity of the product, but also optimize the material utilization rate and reduce the cost. In the existing cotton core forming technology, Chinese Patent No. CN106264872B discloses a cotton core forming device, which includes a pulverizer, a forming die wheel, and a cotton core forming channel connecting the two. By setting first and second air inlets and corresponding airflow adjusting devices on the channel, it is attempted to control the airflow distribution to achieve differential forming of the cotton core thickness. However, such a scheme still has defects in actual application, such as insufficient precision and stability of airflow adjustment. The existing device relies on the first and second air inlets arranged vertically and the corresponding airflow adjusting devices (such as mechanical structures such as substrates, through holes, and slidable cover plates) to control the airflow size and distribution, but 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, causing airflow interference in different areas, making it difficult to accurately match the motion trajectory of the fibers in the channel, and ultimately causing local thickness deviation (such as uneven thickness between the edge and the middle) of the cotton core, affecting the uniformity of the absorption performance. SUMMARY

[0003] To solve the above problems, a cotton core forming device and method based on fiber cotton are provided, which realize the mobility of the blocking piece through the cooperation of the elastic piece and the adsorption force, dynamically open or block the air duct according to the adsorption demand, accurately control the fiber suction amount of each cavity, and avoid the thickness unevenness problem caused by traditional fixed aperture adsorption.

[0004] To solve the problems in the prior art, the present application provides a cotton core forming device based on fiber cotton, which includes a forming die wheel and a plurality of cavities arranged on the forming die wheel. Uniformly arranged air ducts are arranged on the cavities, and a blocking piece capable of moving along the axis of the air duct is arranged in each air duct. An elastic piece is arranged on the blocking piece to hold the blocking piece and block one end of the air duct close to the cavity. A channel is arranged on the inner wall of the air duct to connect the front and rear chambers of the blocking piece. A limiting step is arranged at the end of the air duct away from the cavity. An adsorption mechanism connected to all air ducts is arranged in the forming die wheel. The adsorption mechanism drives the blocking piece to move to the limiting step by adsorption force, so that the air duct is open to adsorb fibers, until the blocking piece moves to the limiting step to block the air duct again. A positioning assembly is further arranged on the adsorption mechanism to fix the blocking piece on the limiting step.

[0005] Preferably, the adsorption mechanism comprises an air suction box and a first pipeline corresponding to the number of the cavities, and the bottom of each cavity is provided with a second pipeline connected with the first pipeline.

[0006] Preferably, the cavity is provided with a plurality of air holes for adsorbing the cotton core, and a partition plate is arranged in the cavity to divide the cavity into a first adsorption cavity and a second adsorption cavity, the second pipeline penetrates through the second adsorption cavity to communicate with the first adsorption cavity, the air hole is provided with an air pipe penetrating through the partition plate to communicate with the second adsorption cavity, and the second adsorption cavity communicates with an external air suction device.

[0007] Preferably, the second adsorption cavity is provided with a third pipeline connected with the second pipeline, and the third pipeline is provided with an electromagnetic valve.

[0008] Preferably, the positioning assembly comprises an electromagnet sleeved on the air pipe away from the cavity, and the blocking piece is made of ferromagnetic material, and when the electromagnet is powered on, the blocking piece can be adsorbed and fixed.

[0009] Preferably, the top of the forming die wheel is provided with a first feeding device for feeding the cavity, and the first feeding device comprises a guide box and a conveying belt arranged on the side wall of the guide box.

[0010] Preferably, the top of the forming die wheel is further provided with a second feeding device which is completely identical in structure with the first feeding device, and a gap is arranged between the first feeding device and the second feeding device.

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

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

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

[0014] S1, the forming die wheel is started, and the forming die wheel drives a plurality of cavities to enter the feeding area in sequence, at this time, the elastic piece in the cavity air channel holds the blocking piece to form initial blocking of the air channel.

[0015] S2, when the cavity enters the feeding area, the adsorption mechanism is started and generates adsorption force, the adsorption mechanism drives the blocking piece to move along the air channel axis to the limiting step, at this time, the channel on the air channel is conducted, the adsorption force passes through the channel to make the area above the blocking piece on the air channel have adsorption force, and the fiber in the feeding area is sucked into the cavity.

[0016] S3, when the blocking piece moves to the limiting step and abuts against it, the blocking piece forms secondary blocking to the air passage, the positioning assembly is started, the position of the blocking piece is fixed, the channel loses the adsorption force, at this time the air passage stops adsorbing the fiber, the forming die wheel continues to rotate, and the cavity with completed single adsorption is taken away from the feeding area.

[0017] S4a, whether the blocking piece in each cavity air passage moves to the limiting step is detected.

[0018] S4b, if there is a cavity that does not meet the standard, the cavity is made to enter the feeding area again through the rotation of the forming die wheel, and the steps S2-S3 are repeated until all the blocking pieces are in place.

[0019] S4c, if all the cavities meet the standard, the forming die wheel continues to rotate, and the cavity with completed fiber adsorption is sequentially transported to the subsequent process to form a cotton core with uniform thickness.

[0020] The beneficial effects of the present application compared with the prior art are:

[0021] 1. Through the cooperation of the elastic member and the adsorption force, the present application realizes the mobility of the blocking piece, makes the air passage dynamically conduct or block according to the adsorption demand, accurately controls the fiber adsorption amount of each cavity, and avoids the thickness uneven problem caused by traditional fixed aperture adsorption. In view of the possible uneven adsorption force or fiber distribution difference in the suction process, through the rotation cycle of the forming die wheel, the non-standard cavity can enter the feeding area repeatedly for repeated adsorption until all the blocking pieces are in place, which significantly improves the uniformity of the thickness of each region of the cotton core. The setting of the limiting step and the positioning assembly ensures that the blocking piece can be reliably fixed after adsorption is completed, avoids the reset interference of the elastic member to the adsorption state, cooperates with the continuous rotation of the forming die wheel, realizes the automatic continuous production of the cotton core forming, and improves the processing efficiency.

[0022] 2. Through the staged working mode of the air passage and the air hole, the present application makes the two key steps of fiber adsorption and cotton core fixation be carried out efficiently and orderly. The air passage focuses on the adsorption of the fiber and the preliminary forming of the cotton core, and the air hole provides auxiliary fixation in time when needed, which avoids the influence of unnecessary air flow interference on the forming quality of the cotton core in the adsorption process, and improves the efficiency of the whole forming process.

[0023] 3. Through the setting of the first feeding device, the second feeding device and the visual detection device, the cavity does not need to be subjected to complex turnover or waiting, and the initial feeding, detection and correction feeding can be completed in the continuous rotation process of the forming die wheel, which shortens the production cycle and improves the production efficiency. The detection device can detect the forming quality of the cotton core in the cavity in real time and accurately, and provide accurate correction basis for the second feeding device. Through accurate identification and positioning of the defects of the cotton core, the second feeding device can make targeted supplement, improve the forming quality and uniformity of the cotton core, and reduce the rate of defective products. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of a three-dimensional structure of a fiber cotton-based cotton core forming device and a conveying belt.

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

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

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

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

[0029] Figure 6 is Figure 4 is an enlarged view of A in FIG. 6.

[0030] Figure 7 is Figure 5 is an enlarged view of B in FIG. 6.

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

[0032] Figure 9 is Figure 8 is an enlarged view of C in FIG. 6.

[0033] Figure 10 is a schematic diagram of a three-dimensional structure of a forming die in a fiber cotton-based cotton core forming device.

[0034] Figure 11 is an exploded view of a cavity in a fiber cotton-based cotton core forming device.

[0035] Figure 12 is an exploded view of a cavity in a fiber cotton-based cotton core forming device.

[0036] Reference numerals in the drawings are:

[0037] 1. Molding mold wheel; 11. Cavity; 111. Second pipe; 1111. First adsorption chamber; 112. Air hole; 1121. Air pipe; 113. Partition plate; 114. Second adsorption chamber; 1141. Third pipe; 1142. Solenoid valve; 12. Adsorption mechanism; 121. Air suction box; 1211. First pipe; 13. First feeding device; 131. Guide box; 132. Conveyor belt; 133. Second feeding device; 14. Vision inspection device; 15. Conveyor belt; 2. Air passage; 21. Sealing component; 211. Elastic component; 22. Limiting step; 23. Positioning component; 231. Electromagnet. Detailed Implementation

[0038] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further 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 includes a forming die wheel 1 and multiple cavities 11 disposed on the forming die wheel 1. Air passages 2 are evenly arranged on the cavities 11. Each air passage 2 contains a sealing element 21 that can move along the axis of the air passage 2. An elastic element 211 is disposed on the sealing element 21, which is used to hold the sealing element 21 and seal the end of the air passage 2 near the cavity 11. The inner wall of the air passage 2 is provided with a connection between the front and rear cavities of the sealing element 21. The passageway 2 has a limiting step 22 at one end away from the cavity 11. The molding wheel 1 is equipped with an adsorption mechanism 12 connected to all the air passages 2. The adsorption mechanism 12 is used to drive the sealing member 21 to move towards the limiting step 22 by adsorption force, so that the air passage 2 is open to adsorb fibers until the sealing member 21 moves to the limiting step 22 to block the air passage 2. The adsorption mechanism 12 is also equipped with a positioning component 23 that can fix the sealing member 21 on the limiting step 22.

[0040] The forming die wheel 1 will drive a plurality of cavities 11 to pass through the feeding area in turn by rotating. When the cavity 11 enters the feeding area, the adsorption mechanism 12 is started. The adsorption mechanism 12 is preferably a negative pressure adsorption mechanism, such as a vacuum pump, a negative pressure air source, etc. The adsorption force generated by the adsorption mechanism 12 acts on the blocking piece 21. In the initial state, the elastic piece 211 holds the blocking piece 21 on the air channel 2 near one end of the cavity 11, forming an initial block. After the adsorption force is generated, the blocking piece 21 will overcome the holding force of the elastic piece 211, and the adsorption force will drive the blocking piece 21 to move away from the cavity 11 along the air channel 2 axis, that is, to the limiting step 22, at this time the elastic piece 211 is compressed. With the blocking piece 21 moving away from the blocking position in the initial state, a plurality of passages on the inner wall of the air channel 2 are connected, that is, the space on both ends of the blocking piece 21 in the air channel 2 is connected. At this time, because the blocking piece 21 has not moved to the limiting step 22, the adsorption force can pass through the passage to generate suction in the upper area of the blocking piece 21, thereby generating suction on the end of the air channel 2 close to the cavity, and the fiber in the feeding area is sucked into the cavity 11.

[0041] When the blocking piece 21 moves to the limiting step 22 and abuts against it, the blocking piece 21 blocks the air channel 2 again. At this time, because the limiting step 22 is blocked by the blocking piece 21, the adsorption force cannot be transmitted to the area above the blocking piece 21, so that the air channel loses the adsorption force. At the same time, the positioning assembly 23 is started. The positioning assembly 23 is preferably an electromagnetic adsorption structure. The positioning assembly 23 will fix the blocking piece 21 at the limiting step 22 to prevent the elastic piece 211 from returning to drive the blocking piece 21 to move back, so that the air channel 2 loses the adsorption force. Figure 9 The arrow indicates the direction of air flow.

[0042] Due to factors such as fiber bulkiness and adsorption force fluctuation, some blocking pieces 21 may not move completely to the limiting step 22, resulting in insufficient suction of the corresponding cavity 11. Whether the suction effect is completed is determined by whether the blocking piece 21 moves to the limiting step 22. At this time, the forming die wheel 1 moves to the feeding area again by continuous rotation, or the forming die wheel 1 adjusts the time of staying in the feeding area, until all the blocking pieces 21 move to the limiting step 22 and are fixed by the positioning assembly 23, so as to realize uniform adsorption of the fiber in the cavity 11.

[0043] The movability of the plugging piece 21 is realized through the cooperation of the elastic piece 211 and the adsorption force, so that the air duct 2 is dynamically opened or plugged according to the adsorption demand, the fiber suction amount of each cavity 11 is accurately controlled, the adsorption amount is determined by the moving time of the plugging piece 21, and the uneven thickness problem caused by traditional fixed aperture adsorption is avoided. It should be noted that the cavity 11 in the figure is schematically shown as a curved surface matched with the forming die wheel 1, and the length distances of the air ducts 2 inside are inconsistent. At this time, the elastic force of the elastic piece 211 is replaced or adjusted to ensure that the time region of each plugging piece 21 moving is consistent. The figure is only a schematic state, and all air ducts can also be provided with the same length. In view of the possible uneven adsorption force or fiber distribution difference in the suction process, through the rotation cycle of the forming die wheel 1, the substandard cavity 11 can enter the feeding area repeatedly for repeated adsorption until all the plugging pieces 21 are in place, thereby significantly improving the uniformity of the thickness of each region of the cotton core. The setting of the limiting step 22 and the positioning assembly 23 ensures that the plugging piece 21 can be reliably fixed after adsorption is completed, avoids the reset interference of the elastic piece 211 to the adsorption state, cooperates with the continuous rotation of the forming die wheel 1, realizes the automatic continuous production of the cotton core forming, and improves the processing efficiency. Through the dynamic control of the opening and closing of the air duct 2, the fiber redundancy in the edge and other non-key regions can be reduced while ensuring the fiber density in the core region, the material cost is reduced while improving the absorption performance of the cotton core, and the market competitiveness of the product is enhanced.

[0044] As shown in Figure 2 , Figures 4 to 11 : the adsorption mechanism 12 includes an air suction box 121 and a first pipeline 1211 which is the same as the number of cavities 11 and one-to-one corresponding, and the bottom of the cavity 11 is provided with a second pipeline 111 connected with the first pipeline 1211.

[0045] The air suction box 121 is provided with a mounting pipe which is connected with an external air suction mechanism (not shown in the figure) such as a vacuum pump, a negative pressure air source and the like through a pneumatic slip ring (not shown in the figure). The pneumatic slip ring allows the forming die wheel 1 to continuously rotate while keeping the air suction box 121 stationary, ensures the stable connection of the mounting pipe with the external air suction mechanism, and avoids the pipeline distortion or air leakage caused by the rotation of the forming die wheel 1.

[0046] Each cavity 11 is provided with a second pipeline 111 at the bottom, and the second pipeline 111 is communicated with the air suction box 121 through the first pipeline 1211, forming an adsorption passage from the external air suction mechanism to the air duct 2 of the cavity 11. When the cavity 11 enters the feeding area with the forming die wheel 1, the external air suction mechanism applies negative pressure to the air suction box 121 through the mounting pipe, and the suction force is transmitted to the air duct 2 of the cavity 11 through the first pipeline 1211 and the second pipeline 111. The adsorption force drives the plugging piece 21 to overcome the resistance of the elastic piece 211 and move to the limiting step 22, compresses the elastic piece 211 and opens the air duct 2, and the fiber is sucked into the cavity 11 under the action of negative pressure.

[0047] The suction box 121 and the cavity 11 are quickly connected via the first pipe 1211 and the second pipe 111. The pneumatic slip ring uses standardized components, which facilitates equipment installation, debugging and subsequent maintenance, reducing downtime and maintenance costs. Even when the forming mold wheel 1 rotates at high speed, the pneumatic slip ring can still maintain a sealed connection, adapting to the high speed and high stability requirements of continuous industrial production. At the same time, it allows for independent maintenance of a single cavity 11 without affecting the overall production process.

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

[0049] During the cotton core forming process, the air holes 112 on the cavity 11 act as independent air passage 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 forming mold wheel 1 rotates and the cavity 11 enters the feeding area, the adsorption mechanism 12 is activated. The resulting adsorption force drives the sealing member 21 to overcome the holding force of the elastic member 211, causing the sealing member 21 to move along the axis of the air channel 2 towards the limiting step 22. As the sealing member 21 moves, the channel on the air channel 2 is opened, and at this time, a sufficiently strong adsorption force is formed in the cavity 11, drawing the fibers from the feeding area into the cavity 11. In this process, the adsorption force of the air channel 2 not only completes the initial forming of the cotton core but also ensures the stable position of the cotton core within the cavity 11. During this stage, the air holes 112 are in a closed state, serving only as a backup fixing structure and not participating in the fiber suction process.

[0050] When all the sealing components 21 have moved to the limiting step 22, it means that the cotton core adsorption process is complete. At this time, the sealing components 21 block the air passage 2, causing the cavity 11 to lose the adsorption force on the cotton core originally provided by the air passage 2. Especially when the forming mold wheel 1 drives the cotton core with the adsorbed fibers to rotate to the lower half of the forming mold wheel 1, the cotton core faces the risk of falling off or shifting due to the influence of gravity. In order to deal with this situation, multiple air holes 112 will be activated, the external air suction device will start working, and it will be connected to the second adsorption chamber 114, generating a negative pressure in the second adsorption chamber 114. This negative pressure is conducted through the air pipe 1121 through the partition 113 to each air hole 112, so that the air holes 112 generate adsorption force, firmly fixing the cotton core to the cavity 11. This provides stable conditions for the subsequent cotton core pressing steps, effectively counteracts the influence of gravity on the cotton core, and prevents the cotton core from falling off or shifting.

[0051] The phased working mode of the air channel 2 and the air hole 112 enables the two key steps of fiber adsorption and core fixation to be carried out efficiently and orderly. The air channel 2 focuses on the adsorption of fibers and the preliminary forming of the core, and the air hole 112 provides auxiliary fixation in a timely manner when needed, avoiding unnecessary airflow interference during the adsorption process that affects the forming quality of the core, while improving the efficiency of the entire forming process.

[0052] The air hole 112 is started after the completion of core adsorption and the loss of adsorption force of the air channel 2, which can effectively offset the influence of gravity on the core. This reduces the risk of core shedding or displacement during rotation, ensuring the stability of the core during the entire forming process and providing a good foundation for subsequent pressing operations, thereby improving the product qualification rate.

[0053] As an independent air path unit, the start and stop of the air hole 112 are not affected by the adsorption process of the air channel 2, so that the work of the air hole 112 can be accurately controlled according to actual conditions, such as the weight of the core, the speed of the forming mold wheel 1, etc. The size of the adsorption force generated by the air hole 112 can be flexibly adjusted to adapt to different production needs, enhancing the versatility and adaptability of the equipment.

[0054] As shown in Figures 5 to 12 The second adsorption cavity 114 is provided with a third pipeline 1141 connected with the second pipeline 111, and the third pipeline 1141 is provided with an electromagnetic valve 1142.

[0055] When the forming mold wheel 1 rotates to drive the cavity 11 into the feeding area, the electromagnetic valve 1142 opens the circuit to make the external air suction device communicate with the second pipeline 111 on the first adsorption cavity 1111, so that the second adsorption cavity 114 can generate adsorption force to drive the blocking piece 21 to move and open the passage on the air channel 2. Fibers are sucked into the cavity 11 through the air channel 2 under the action of negative pressure, completing the preliminary forming. At this time, the air hole 112 remains closed, and the air path focuses on fiber adsorption to avoid interference.

[0056] When all the blocking pieces 21 are in place and fixed, the electromagnetic valve 1142 switches the air path to disconnect the circuit with the second adsorption cavity 114. The negative pressure of the external air suction device is connected with the second adsorption cavity 114 through the third pipeline 1141, so that the air hole 112 generates adsorption force. When the cavity 11 rotates with the forming mold wheel 1 to the lower half area, the adsorption force of the air hole 112 tightly adheres the core to the wall of the cavity 11, offsetting the influence of gravity and ensuring the stability and fixation of the core before pressing, preventing shedding or displacement. The air channel 2 is closed by the blocking piece 21 and remains closed, completely isolated from the air path of the air hole 112, and does not interfere with each other.

[0057] The gas circuit is switched by the electromagnetic valve 1142 to realize the independent operation of the air passage 2 and the air hole 112, avoid the function conflict of a single gas circuit in different stages, ensure the stable and orderly of each process. The phased gas circuit control and the double fixing mechanism ensure that the shape of the cotton core is stable during the whole process from adsorption to pressing, reduce the waste and downtime caused by displacement or falling off, and ensure the continuous operation of the production line, providing reliable support for the automatic production of high-quality cotton cores.

[0058] As shown in Figures 4 to 12 : The positioning assembly 23 includes an electromagnet 231 sleeved on the air passage 2 away from the cavity 11. The blocking piece 21 is made of ferromagnetic material, and when the electromagnet 231 is powered on, it can adsorb the blocking piece 21 and fix its position.

[0059] When the cavity 11 enters the loading area, the adsorption mechanism 12 generates negative pressure to drive the blocking piece 21 to move to the limiting step 22. The limiting step 22 can be integrated with a position sensor such as a micro switch, a proximity sensor, etc. When the blocking piece 21 is displaced to the limiting step 22 and abuts against it, the sensor is triggered and a signal is generated to the control system at the back end. After receiving the signal, the control system immediately sends a power-on instruction to the electromagnet 231. After the electromagnet 231 is powered on, a strong magnetic field is generated to exert an adsorption force on the blocking piece 21 made of ferromagnetic material, so that it is tightly attached to the surface of the limiting step 22. This ensures the blocking effect on the air passage 2, while avoiding the elastic piece 211 driving the blocking piece 21 to reset. When the cavity 11 completes fiber adsorption and leaves the loading area, the control system sends a power-off instruction according to the position signal of the forming die wheel 1 such as encoder feedback, and the electromagnet 231 loses magnetism. The blocking piece 21 is reset to the initial blocking position under the action of the elastic piece 211, and the sensor synchronously detects the reset state to prepare for the next adsorption cycle.

[0060] Through the setting of the positioning assembly 23, the blocking piece 21 is reliably fixed after being adsorbed in place, avoiding the position deviation caused by the fatigue of the elastic piece 211 or the fluctuation of the adsorption force. Compared with the traditional mechanical buckle structure, the positioning accuracy is improved and there is no risk of mechanical wear.

[0061] As shown in Figures 1 to 5 : The upper side of the forming die wheel 1 is provided with a first loading device 13 for loading the cavity 11. The first loading device 13 includes a material guiding box 131 and a conveying belt 132 arranged on the side wall of the material guiding box 131.

[0062] External fiber raw materials, such as cotton pulp and non-woven fibers, are continuously transported to the guide box 131 via a conveyor belt 132 operating at a constant or adjustable speed. The bottom opening of the guide box 131 corresponds to the feeding area of ​​the forming mold wheel 1. When the cavity 11 rotates with the forming mold wheel 1 to below the guide box 131, the adsorption mechanism 12 is activated simultaneously. The fibers transported by the conveyor belt 132 form a loose material layer at the opening of the guide box 131. The negative pressure generated by the air passage 2 or air hole 112 of the cavity 11 passes through the gap between the guide box 131 and the fiber layer, directly drawing the fibers into the cavity 11.

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

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

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

[0066] like Figures 1 to 5 As shown: Above the forming mold wheel 1, there is a second feeding device 133 with the same structure as the first feeding device 13, and a gap is provided between the first feeding device 13 and the second feeding device 133.

[0067] After the cavity 11 rotates away from the first feeding device 13 as the forming mold wheel 1 rotates, it will determine whether there is a problem of local under-absorption or uneven accumulation of cotton core. If uneven cotton core is detected, the control system will immediately trigger the second feeding device 133 to start, and its conveyor belt 132 will transport the same fibers as the first feeding device 13. At this time, the adsorption mechanism 12 remains in working state, and the sealing part 21 that is not fully in place moves again under the action of adsorption force, opening the channel on the air channel 2, so that the fibers of the second feeding device 133 can be supplemented by adsorption to the under-absorption area through the air channel 2.

[0068] Since both the second feeding device 133 and the first feeding device 13 are located above the forming mold wheel 1, the cavity 11 does not need to wait for the forming mold wheel 1 to complete a full rotation. It only needs to pass through the gap before it can be corrected below the second feeding device 133. After the correction and adsorption, the cavity 11 continues to rotate and enters the subsequent process. The entire process does not require returning to the first feeding device 13.

[0069] like Figures 1 to 5As shown: A vision inspection device 14 is also provided between the first feeding device 13 and the second feeding device 133. The first feeding device 13 and the second feeding device 133 are arranged in a mirror symmetrical manner on both sides of the vision inspection device 14.

[0070] After the cavity 11 passes through the first feeding device 13, the forming mold wheel 1 rotates to a position below the vision inspection device 14. The vision inspection device 14 quickly performs high-precision inspection of the appearance, thickness, density distribution, and other aspects of the cotton core inside the cavity 11. It transmits the collected image information to the control system, which analyzes and evaluates the forming quality of the cotton core using preset algorithms and standard parameters, determining whether there are problems such as unevenness, missing material, or impurities in the cotton core, and accurately identifying the location and extent of the defects.

[0071] If the visual inspection device 14 detects unevenness or other defects in the cotton core, the control system will issue a command to the second feeding device 133 based on the detection result. Since the first feeding device 13 and the second feeding device 133 are mirror images of each other on both sides of the visual inspection device 14, the second feeding device 133 can respond quickly. Its conveyor belt 132 transports fibers, and the adsorption mechanism 12 works again to precisely replenish the fibers to the defective parts of the cotton core within the cavity 11, thus correcting the quality of the cotton core molding. If the visual inspection shows that the cotton core quality is qualified, the second feeding device 133 may not be activated or may perform fine-tuning feeding to further optimize the cotton core quality.

[0072] The visual inspection device 14 can detect the molding quality of the cotton core in the cavity 11 in real time and accurately, providing accurate correction basis for the second feeding device 133. Through the accurate identification and positioning of cotton core defects, the second feeding device 133 can replenish material in a targeted manner, improving the molding quality and uniformity of the cotton core and reducing the defect rate.

[0073] The cavity 11 does not require complicated turnover or waiting. The initial feeding, inspection and correction feeding can be completed during the continuous rotation of the forming mold wheel 1, which shortens the production cycle and improves production efficiency.

[0074] like Figure 1 As shown: A conveyor belt 15 for receiving cotton cores is provided below the forming mold wheel 1.

[0075] When the cavity 11 rotates with the forming mold wheel 1 to the bottom demolding area, the air passage 2 will use back-blowing to separate the molded cotton core from the inner wall of the cavity 11. The conveyor belt 15 runs at the same speed as 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 difference. The conveyor belt 15 receives the demolded cotton core and directly transports it to the subsequent process, eliminating the efficiency bottleneck caused by traditional manual material receiving or intermittent transfer, and making the high-speed rotation of the forming mold wheel 1 seamlessly connected with the downstream process, thus improving production efficiency.

[0076] As shown in Figures 1 to 9 A cotton core forming method based on fiber cotton is applied to the cotton core forming device based on fiber cotton, and includes the following steps:

[0077] S1, the forming die wheel 1 is started, and the forming die wheel 1 drives a plurality of cavities 11 to enter the feeding area in sequence. At this time, the elastic member 211 in the air channel 2 of the cavity 11 supports and blocks the blocking member 21, so that the blocking member 21 forms initial blocking on the air channel 2.

[0078] S2, when the cavity 11 enters the feeding area, the adsorption mechanism 12 is started and generates adsorption force, and the adsorption mechanism 12 drives the blocking member 21 to move along the air channel 2 axis to the limiting step 22. At this time, the channel on the air channel 2 is conducted, and the adsorption force makes the area above the blocking member on the air channel 2 have adsorption force, so that the fiber in the feeding area is sucked into the cavity 11.

[0079] S3, when the blocking member 21 moves to the limiting step 22 and abuts against it, the blocking member 21 forms secondary blocking on the air channel 2, the positioning assembly 23 is started, and the position of the blocking member 21 is fixed, so that the channel loses the adsorption force. At this time, the air channel 2 stops adsorbing the fiber, and the forming die wheel 1 continues to rotate to take the cavity 11 which completes single adsorption away from the feeding area.

[0080] S4a, detect whether the blocking member 21 in each cavity 11 air channel 2 moves to the limiting step 22.

[0081] S4b, if there is a cavity 11 that does not meet the standard, the cavity 11 is made to enter the feeding area again with the rotation of the forming die wheel 1, and the steps S2-S3 are repeated until all the blocking members 21 are in place.

[0082] S4c, if all the cavities 11 meet the standard, the forming die wheel 1 continues to rotate, and the cavities 11 which complete fiber adsorption are sequentially conveyed to the subsequent process to form a cotton core with uniform thickness.

[0083] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A fiber cotton based core forming apparatus comprising a forming die wheel and a plurality of cavities provided on the forming die wheel, characterized in that, The cavity is provided with uniformly arranged air passages, and each air passage is provided with a blocking piece capable of moving along the air passage axis; The blocking piece is provided with an elastic piece, which is used to support the blocking piece to block one end of the air passage close to the cavity; The end of the air passage away from the cavity is provided with a limiting step, and the forming die wheel is provided with a suction mechanism connected with all the air passages, which is used to drive the blocking piece to move to the limiting step by suction force to make the air passage conductive to suction the fibers until the blocking piece moves to the limiting step to block the air passage again; The suction mechanism is further provided with a positioning assembly capable of fixing the blocking piece on the limiting step.

2. A fiber cotton based wick forming device as claimed in claim 1, wherein, The suction mechanism comprises a suction box and a first pipeline corresponding to the number of cavities.

3. A fiber cotton based wick forming device as claimed in claim 2, wherein, The cavity is provided with a plurality of air holes for suctioning the cotton core, and a partition plate is arranged in the cavity to divide the cavity into a first suction chamber and a second suction chamber.

4. A fiber cotton based wick forming device as claimed in claim 3, wherein, The second pipeline penetrates through the second suction chamber to communicate with the first suction chamber, and the air hole is provided with an air pipe penetrating through the partition plate to communicate with the second suction chamber.

5. A fiber cotton based wick forming device as claimed in claim 1, wherein, The second suction chamber is communicated with an external suction device.

6. The cotton core forming device based on fiber cotton according to claim 1, characterized in that, The second suction chamber is provided with a third pipeline connected with the second pipeline, and the third pipeline is provided with a solenoid valve.

7. A fibre cotton based wick forming device as claimed in claim 6, wherein, The positioning assembly comprises an electromagnet sleeved on the end of the air passage away from the cavity, and the blocking piece is made of ferromagnetic material.

8. A fibre cotton based wick forming device as claimed in claim 7, wherein, The upper part of the forming die wheel is provided with a first feeding device for feeding the cavity, and the first feeding device comprises a guide box and a conveying belt arranged on the side wall of the guide box.

9. A fiber cotton based wick forming device as claimed in claim 1, wherein, The upper part of the forming die wheel is further provided with a second feeding device identical in structure to the first feeding device, and a gap is arranged between the first feeding device and the second feeding device.

10. A method for forming a fiber cotton-based wick, applied to the fiber cotton-based wick forming apparatus according to any one of claims 1 to 9, characterized by, A visual detection device is further arranged between the first feeding device and the second feeding device, and the first feeding device and the second feeding device are arranged on the two sides of the visual detection device in a mirror-symmetrical state. The lower part of the forming die wheel is provided with a conveying belt for receiving the cotton core. The method comprises the following steps: S1, the forming die wheel is started, and the forming die wheel drives a plurality of cavities to enter the feeding area in sequence, at this time the elastic piece in the cavity air passage supports the blocking piece to form initial blocking of the air passage; S2, when the cavity enters the feeding area, the suction mechanism is started and generates suction force, the suction mechanism drives the blocking piece to move along the air passage axis to the limiting step, at this time the passage on the air passage is opened, and the suction force makes the area above the blocking piece on the air passage have suction force, and the fibers in the feeding area are sucked into the cavity; S3, when the blocking piece moves to the limiting step and abuts against it, the blocking piece forms secondary blocking of the air passage, the positioning assembly is started to fix the position of the blocking piece, so that the passage loses suction force, at this time the air passage stops suctioning the fibers, and the forming die wheel continues to rotate to take the cavity completing single suction away from the feeding area; S4a, whether the blocking pieces in all cavity air passages move to the limiting step is detected; S4b, if there is a non-compliant cavity, the cavity is rotated again into the loading area, repeating steps S2-S3 until all the blocking pieces are in place; S4c, if all the cavities are up to standard, the molding wheel continues to rotate, and the completed fiber-adsorbed cavities are sequentially transported to the subsequent process to form a cotton core with uniform thickness.

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