A waste corner material collecting device for non-woven fabric production

Abstract

This invention discloses a waste scrap collection device for nonwoven fabric production, relating to the field of fabric production waste collection technology. It includes a collection box fixedly connected to the outer wall of the top of a base. The collection box has a pre-compression chamber and a storage chamber arranged sequentially from top to bottom, with a material discharge baffle fixed between the pre-compression chamber and the storage chamber. A negative pressure suction mechanism is provided at the top of the collection box, comprising a feed hood fixedly connected to the top of the collection box, a negative pressure conveying pipe fixedly connected to the top of the feed hood, a suction hood, and a centrifugal fan. This invention employs a two-stage compression structure of "horizontal pre-compression and vertical final compression," first initially compressing the loose scrap into blocks, and then performing high-density compaction in the vertical direction. The compression tooth design effectively prevents rebound, significantly reducing the volume of collected waste, lowering storage space requirements, reducing cleaning frequency, and improving production efficiency, thereby meeting the needs of continuous production.

Description

Technical Field

[0001] This invention relates to the field of waste collection technology in fabric production, and in particular to a waste scrap collection device for nonwoven fabric production. Background Technology

[0002] During the production of nonwoven fabrics, especially in processes such as slitting and trimming, a large amount of waste scraps are generated. These scraps come in various forms, including long, thin strips and fluffy, fibrous materials. Existing scrap collection devices have the following main shortcomings: Firstly, existing technologies mostly employ negative pressure suction and collection bins for material collection. While this method achieves automated collection, scrap materials still accumulate loosely inside the bins, significantly occupying storage space and requiring frequent cleaning of the accumulated waste, thus failing to meet the needs of continuous production.

[0003] Secondly, when the existing negative pressure conveying system processes long fiber scraps, fiber entanglement and blockage are very likely to occur at the bends of the pipes, causing system failure and requiring shutdown for cleaning, which seriously affects the continuity of production. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a waste scrap collection device for nonwoven fabric production that features high collection efficiency, good volume reduction effect, strong anti-clogging capability, and intelligent control function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A waste scrap collection device for non-woven fabric production includes a collection box fixedly connected to the outer wall of the top of the base. The collection box is provided with a pre-compression chamber and a storage chamber from top to bottom, and a material discharge partition is fixed between the pre-compression chamber and the storage chamber. The top of the collection box is provided with a negative pressure suction mechanism, which includes a feed hood fixedly connected to the top of the collection box, a negative pressure conveying pipe fixedly connected to the top of the feed hood, a suction hood fixedly connected to one end of the negative pressure conveying pipe, and a centrifugal fan fixedly connected to the side wall of the collection box through a fan bracket. The pre-compression chamber is equipped with a horizontal compression mechanism, which includes a first hydraulic cylinder fixedly installed on the side wall of the collection box, a horizontal guide assembly, and a first pressure plate fixedly connected to the piston end of the first hydraulic cylinder. A first material level sensor is fixedly installed on the top inner wall of the pre-compression chamber. The storage chamber is equipped with a vertical compression mechanism, which includes a second hydraulic cylinder fixedly installed on the bottom outer wall of the material discharge partition, a vertical guide assembly, and a second pressure plate fixedly connected to the piston end of the second hydraulic cylinder. A second material level sensor is fixedly installed on the bottom outer wall of the material discharge partition. The top of the material discharge partition is provided with a material discharge port, a drive shaft is rotatably installed inside the material discharge port, and a material discharge cover plate adapted to the material discharge port is fixedly connected to the drive shaft. The negative pressure delivery pipeline is equipped with an anti-blocking mechanism, which includes a negative pressure sensor installed on the negative pressure delivery pipeline, a gas supply pipe fixedly connected to the negative pressure delivery pipeline, a gas supply solenoid valve installed on the gas supply pipe, and an electric knocking component located at the bend of the negative pressure delivery pipeline.

[0006] Preferably, the negative pressure conveying pipeline is fixedly connected to the top outer wall of the collection box through a pipeline support, and the air inlet of the centrifugal fan is connected to the feed hood through a pipeline.

[0007] By adopting the above technical solutions, the pipe support ensures the stable installation of the negative pressure conveying pipe; the centrifugal fan is directly connected to the feed hood to form a complete negative pressure circuit, ensuring sufficient suction power.

[0008] Preferably, the horizontal guide assembly includes two guide rails fixedly embedded in the inner walls of the front and rear sides of the pre-compression chamber and two guide sliders welded to the outer walls of the front and rear sides of the first pressure plate, and the two guide sliders are slidably connected to the two guide rails respectively.

[0009] By adopting the above technical solution, the guide slider and the guide rail cooperate to provide precise guidance for the horizontal reciprocating motion of the first pressure plate, prevent the pressure plate from deviating during the compression process, and ensure that the compression force is evenly applied to the scrap material.

[0010] Preferably, the bottom of the second pressure plate is fixed with evenly distributed clamping teeth.

[0011] By adopting the above technical solution, the clamping teeth embed into the surface of the material block during vertical compression, increasing the interlocking and interlocking effect between fibers, effectively preventing the compressed material block from rebounding due to fiber elasticity, and improving compression density and molding stability.

[0012] Preferably, the vertical guide assembly includes two guide grooves formed on the inner walls of the front and rear sides of the storage cavity and two guide blocks welded sequentially to the outer walls of the front and rear sides of the second pressure plate, and the two guide blocks are slidably connected to the two guide grooves respectively.

[0013] By adopting the above technical solution, the guide block and the guide groove cooperate to provide stable guidance for the vertical movement of the second pressure plate, ensuring that the pressure plate remains horizontal during the compression process, so that the material block is subjected to uniform pressure in all parts.

[0014] Preferably, the outer end of the drive shaft is provided with a driver for driving the material discharge cover switch. The driver includes a protective cover fixedly connected to the rear outer wall of the collection box, a stepper motor fixedly installed on the rear outer wall of the protective cover, a drive gear fixedly mounted on the output shaft of the stepper motor, and a transmission gear fixedly mounted on the drive shaft. The output shaft of the stepper motor extends through into the protective cover, and the drive gear and the transmission gear mesh with each other and are both located inside the protective cover.

[0015] By adopting the above technical solution, the stepper motor drives the material discharge cover to open or close precisely through gear transmission, thereby realizing the on / off control between the pre-compression chamber and the storage chamber; the protective cover protects the transmission components from dust contamination.

[0016] Preferably, the storage cavity is provided with a guide seat located directly below the discharge port, and the guide seat is inclined.

[0017] By adopting the above technical solution, the guide seat guides the falling pre-compressed material block to one side of the storage chamber, which facilitates subsequent vertical compression and discharge, and avoids material accumulation directly below the discharge port, which affects the closing of the discharge cover.

[0018] Preferably, the electric striking assembly includes a support plate fixedly connected to the outer wall of the negative pressure conveying pipeline, a drive motor fixedly installed on the rear outer wall of the support plate, a control gear fixedly mounted on the drive motor, a swinging component rotatably connected to the support plate via a rotating pin, a curved lever welded to the lower outer wall of the swinging component, a return spring fixedly connected to the outer wall of the curved lever, a striking rod welded to the upper outer wall of the swinging component, and a rubber striking ball fixed to the end of the striking rod. The bottom end of the curved lever extends into the tooth groove of the control gear, and one end of the return spring is fixedly connected to the support plate via a spring seat.

[0019] By adopting the above technical solution, the drive motor drives the control gear to rotate, and the tooth groove of the control gear periodically moves the curved lever, causing the swinging part to swing back and forth, driving the striking rod and rubber striking ball head to repeatedly strike the outer wall of the negative pressure conveying pipeline. The resulting vibration can effectively shake off the fibrous material attached to the pipe wall and prevent blockage at the bend.

[0020] Preferably, the opening of the suction hood is provided with an opening area adjustment component, which includes two bearing seats symmetrically fixed to the outer wall of the top of the suction hood, a bidirectional screw mounted on the two bearing seats, two threaded connecting rods symmetrically screwed to the two opposite threaded ends of the bidirectional screw, two adjusting plates slidably connected to both sides of the suction hood, and a handwheel fixedly connected to the outer wall of one end of the bidirectional screw, and the two threaded connecting rods are respectively fixedly connected to the two adjusting plates.

[0021] By adopting the above technical solution, rotating the handwheel drives the bidirectional screw to rotate, causing the two threaded connecting rods to move synchronously towards or away from each other, thereby driving the two adjusting plates to adjust the opening area synchronously. The suction area of ​​the suction hood can be flexibly adjusted according to the size of the discharge port of the slitting equipment, thus optimizing the suction efficiency.

[0022] Preferably, a main controller is fixedly installed on the front outer wall of the collection box, and a discharge door communicating with the storage chamber is hinged to one side of the collection box.

[0023] By adopting the above technical solution, the main controller centrally controls each actuator to achieve automated operation; the discharge gate facilitates the removal of compressed and molded material blocks, making operation convenient.

[0024] The beneficial effects of this invention are as follows: 1. This invention adopts dual compression, which has a significant volume reduction effect: It adopts a two-stage compression structure of "horizontal pre-compression and vertical final compression". First, the loose scraps are initially compressed into blocks, and then high-density compaction is carried out in the vertical direction. The compression tooth design effectively prevents rebound, greatly reduces the volume of collected waste, reduces storage space occupation, reduces cleaning frequency, and improves production efficiency, thereby meeting the needs of continuous production. 2. This invention has strong anti-clogging capabilities and ensures continuous operation: It integrates negative pressure monitoring, pulse backflushing and electric knocking components into one unit. When the negative pressure in the pipeline is abnormal, the anti-clogging program is automatically activated to effectively remove the fibrous material wrapped around the bends in the pipeline, avoid downtime for cleaning due to blockage, and adapt to long-term continuous operation. 3. This invention uses dual level sensors to monitor the material level status of the pre-compression chamber and the storage chamber in real time, and the control system automatically adjusts the working sequence of the compression mechanism to achieve intelligent operation of "compressing when full and storing when finished", thereby avoiding frequent manual inspections and improving equipment utilization. 4. The present invention has good material suction adaptability and adjustable efficiency: the material suction hood opening area adjustment component can flexibly adjust the material suction area according to the size of the discharge port of the slitting equipment, optimize the material suction efficiency, and avoid insufficient material suction or wasted air volume due to mismatch of opening area. Attached Figure Description

[0025] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 This is a cross-sectional view of the collection box of the present invention; Figure 3 This is a three-dimensional structural diagram of the collection box body of the present invention; Figure 4 This is a three-dimensional enlarged structural schematic diagram of the horizontal compression mechanism of the present invention; Figure 5 This is a three-dimensional enlarged structural diagram of the bottom of the second pressure plate of the present invention; Figure 6 This is a three-dimensional enlarged structural schematic diagram of the actuator used to drive the opening and closing of the material discharge cover plate according to the present invention; Figure 7 This is a three-dimensional enlarged structural diagram of the connection between the feed hood and the centrifugal fan of the present invention; Figure 8 This is a three-dimensional enlarged structural diagram of the connection between the negative pressure conveying pipeline and the support plate of the present invention; Figure 9 This is a three-dimensional enlarged structural diagram of the electric striking component of the present invention; Figure 10 This is a three-dimensional enlarged structural schematic diagram of the opening area adjustment component of the present invention; Figure 11 This is a rear-view three-dimensional structural diagram of the present invention.

[0026] In the diagram: 1. Base; 2. Collection box; 3. Discharge baffle; 4. Pre-compression chamber; 5. Storage chamber; 6. Feed hood; 7. Negative pressure conveying pipe; 8. Suction hood; 9. Centrifugal fan; 10. First hydraulic cylinder; 11. First pressure plate; 12. Guide slide rail; 13. Guide slider; 14. Second hydraulic cylinder; 15. Second pressure plate; 16. Clamping teeth; 17. Guide block; 18. Guide chute; 19. First material level sensor; 20. Second material level sensor; 21. Discharge port; 22. Drive shaft; 23. Discharge... 24. Material cover plate; 25. Protective cover; 26. Stepper motor; 27. Drive gear; 28. Transmission gear; 29. ​​Negative pressure sensor; 30. Air supply pipe; 31. Air supply solenoid valve; 32. Support plate; 33. Drive motor; 34. Control gear; 35. Swing component; 36. Bent lever; 37. Return spring; 38. Striking rod; 39. Rubber striking ball head; 40. Bearing seat; 41. Bidirectional screw; 42. Threaded connecting rod; 43. Adjusting plate; 44. Handwheel; 45. Main controller; 46. Discharge gate. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example 1, referring to Figure 1-6 A waste scrap collection device for non-woven fabric production includes a collection box 2 fixedly connected to the top outer wall of the base 1. The collection box 2 is provided with a pre-compression chamber 4 and a storage chamber 5 from top to bottom. A material drop partition 3 is fixed between the pre-compression chamber 4 and the storage chamber 5. Furthermore, the top of the collection box 2 is provided with a negative pressure suction mechanism, which includes a feed hood 6 fixedly connected to the top of the collection box 2, a negative pressure conveying pipe 7 fixedly connected to the top of the feed hood 6, a suction hood 8 fixedly connected to one end of the negative pressure conveying pipe 7, and a centrifugal fan 9 fixedly connected to the side wall of the collection box 2 through a fan bracket. Furthermore, a horizontal compression mechanism is provided in the pre-compression chamber 4. The horizontal compression mechanism includes a first hydraulic cylinder 10 fixedly installed on the side wall of the collection box 2, a horizontal guide assembly, and a first pressure plate 11 fixedly connected to the piston end of the first hydraulic cylinder 10. A first material level sensor 19 is fixedly installed on the top inner wall of the pre-compression chamber 4. The piston end of the first hydraulic cylinder 10 penetrates the side wall of the collection box 2. The first material level sensor 19 is a photoelectric diffuse reflection sensor. Furthermore, a vertical compression mechanism is provided in the storage chamber 5. The vertical compression mechanism includes a second hydraulic cylinder 14 fixedly installed on the bottom outer wall of the discharge partition 3, a vertical guide assembly, and a second pressure plate 15 fixedly connected to the piston end of the second hydraulic cylinder 14. A second material level sensor 20 is fixedly installed on the bottom outer wall of the discharge partition 3. The second material level sensor 20 is a photoelectric diffuse reflection sensor. Furthermore, a discharge port 21 is provided on the top of the discharge baffle 3, and a drive shaft 22 is rotatably installed inside the discharge port 21. A discharge cover plate 23 adapted to the discharge port 21 is fixedly connected to the drive shaft 22. Furthermore, the negative pressure conveying pipeline 7 is fixedly connected to the top outer wall of the collection box 2 through the pipeline support, and the air inlet of the centrifugal fan 9 is connected to the feed hood 6 through the pipeline. A filter interception grid is provided at the connection between the air inlet of the centrifugal fan 9 and the feed hood 6 to prevent some waste from entering the centrifugal fan 9. Furthermore, the horizontal guide assembly includes two guide slide rails 12 fixedly embedded in the inner walls of the front and rear sides of the pre-compression chamber 4 and two guide sliders 13 welded to the outer walls of the front and rear sides of the first pressure plate 11. The two guide sliders 13 are slidably connected to the two guide slide rails 12 respectively. Furthermore, the bottom of the second pressure plate 15 is fixed with evenly distributed pressing teeth 16. The pressing teeth are embedded in the surface of the material block during compression, increasing the interlocking between fibers and preventing springback after compression. Furthermore, the vertical guide assembly includes two guide grooves 18 formed on the inner walls of the front and rear sides of the storage cavity 5 and two guide blocks 17 welded sequentially to the outer walls of the front and rear sides of the second pressure plate 15. The two guide blocks 17 are slidably connected to the two guide grooves 18 respectively. Furthermore, the outer end of the drive shaft 22 is provided with a driver for driving the switch of the discharge cover 23. The driver includes a protective cover 24 fixedly connected to the rear outer wall of the collection box 2, a stepper motor 25 fixedly installed on the rear outer wall of the protective cover 24, a drive gear 26 fixedly mounted on the output shaft of the stepper motor 25, and a transmission gear 27 fixedly mounted on the drive shaft 22. The output shaft of the stepper motor 25 extends through into the protective cover 24, and the drive gear 26 and the transmission gear 27 mesh with each other and are both located inside the protective cover 24. Furthermore, the storage chamber 5 is equipped with a guide seat located directly below the discharge port 21. The guide seat is inclined at an angle of 45° and is made of mirror-polished stainless steel plate with a surface smoothness Ra≤0.8μm to ensure that the edge material slides smoothly into the compression area. In addition, a main controller 44 is fixedly installed on the front outer wall of the collection box 2. The main controller 44 centrally controls each actuator to realize automated operation. A discharge door 45 connected to the storage chamber 5 is hinged on one side of the collection box 2. The discharge door 45 facilitates the removal of the compressed material blocks and is easy to operate. The main controller 44 uses a PLC (Siemens S7-1200) as its core and is equipped with a touch screen human-machine interface. The PLC automatically controls the working sequence of the horizontal compression mechanism according to the signal of the first material level sensor 19 to realize "pressing when the material is full". The signal of the second material level sensor 20 triggers a full load alarm (audio and visual alarm) and displays the prompt "The storage chamber is full, please empty" on the touch screen.

[0029] Example 2, refer to Figure 1 and Figure 7-9 This embodiment is an optimization based on embodiment 1. Specifically, the negative pressure conveying pipeline 7 is provided with an anti-blocking mechanism, which includes a negative pressure sensor 28 installed on the negative pressure conveying pipeline 7, a gas supply pipe 29 fixedly connected to the negative pressure conveying pipeline 7, a gas supply solenoid valve 30 installed on the gas supply pipe 29, and an electric knocking component located at the bend of the negative pressure conveying pipeline 7. Furthermore, the negative pressure source uses a 7.5kW centrifugal fan 9 with an air volume of 1500m³. 3 / h, negative pressure value -15kPa. A negative pressure sensor 28 (range -20-0kPa) is installed on the negative pressure delivery pipeline 7, which is linked with the air replenishment solenoid valve 30 (DN25, normally closed). When the negative pressure value is lower than -12kPa (i.e., the suction force increases abnormally) for more than 3 seconds, the main controller 44 determines that the pipeline is prone to blockage, opens the air replenishment solenoid valve 33 to perform pulse backflushing (open for 0.5 seconds, close for 2 seconds, cycle 3 times), and uses external airflow to flush and clear the blockage; Furthermore, the electric striking assembly includes a support plate 31 fixedly connected to the outer wall of the negative pressure conveying pipe 7, a drive motor 32 fixedly installed on the rear outer wall of the support plate 31, a control gear 33 fixedly mounted on the drive motor 32, a swing member 34 rotatably connected to the support plate 31 via a rotating pin, a curved lever 35 welded to the lower outer wall of the swing member 34, a return spring 36 fixedly connected to the outer wall of the curved lever 35, a striking rod 37 welded to the upper outer wall of the swing member 34, and a rubber rod fixed to the end of the striking rod 37. The rubber striking ball head 38 and the bottom end of the curved lever 35 extend into the tooth groove of the control gear 33. One end of the return spring 36 is fixedly connected to the support plate 31 through the spring seat. The output shaft of the drive motor 32 passes through the support plate 31. In this way, the drive motor 32 drives the control gear 33 to rotate. The tooth groove of the control gear 33 periodically moves the curved lever 35, causing the swing member 34 to swing back and forth. This drives the striking rod 37 and the rubber striking ball head 38 to repeatedly strike the outer wall of the pipe bend. The resulting vibration causes the fibers attached to the pipe wall to fall off.

[0030] Example 3, referring to Figure 10-11 This embodiment is an optimization based on embodiment 1. Specifically, the opening area of ​​the suction hood 8 is provided with an opening area adjustment component. The opening area adjustment component includes two bearing seats 39 symmetrically fixed to the outer wall of the top of the suction hood 8, a bidirectional screw 40 rotatably mounted on the two bearing seats 39, two threaded connecting rods 41 symmetrically screwed to the two opposite threaded ends of the bidirectional screw 40, two adjusting plates 42 slidably connected to both sides of the suction hood 8, and a handwheel 43 fixedly connected to the outer wall of one end of the bidirectional screw 40. The two threaded connecting rods 41 are respectively fixedly connected to the two adjusting plates 42. Furthermore, the suction hood 8 has slide rails on both sides for sliding the two adjusting plates 42. In use, rotating the handwheel 43 drives the bidirectional screw 40 to rotate, causing the two threaded connecting rods 41 to move synchronously towards or away from each other, thereby driving the two adjusting plates 42 to adjust the opening area synchronously. The suction area of ​​the suction hood can be flexibly adjusted according to the size of the discharge port of the slitting equipment to optimize the suction efficiency.

[0031] The usage process of this invention is as follows: S1 Negative pressure suction and material level monitoring: Start the centrifugal fan 9 to create negative pressure in the negative pressure conveying pipe 7. The suction hood 8 is placed at the discharge port of the slitting equipment. Scrap materials are sucked in under negative pressure and fall into the pre-compression chamber 4 through the negative pressure conveying pipe 7 and the feeding hood 6. The first material level sensor 19 monitors the material level in the pre-compression chamber 4 in real time. When the material level reaches the set upper limit, the main controller 44 sends a signal to pause suction and start the horizontal compression program.

[0032] S2 Horizontal Pre-compression: The piston rod of the first hydraulic cylinder 10 extends, driving the first pressure plate 11 to move horizontally along the guide rail 12, pushing the loose scrap material in the pre-compression chamber 4 to one side and initially compressing it. After compression, the piston rod of the first hydraulic cylinder 10 drives the first pressure plate 11 to retract back to its original position. At this time, the stepper motor 25 starts, driving the drive shaft 22 to rotate through the meshing effect of the drive gear 26 and the transmission gear 27, and the material discharge cover 23 flips down to open the material discharge port 21. The pre-compressed material block falls into the storage chamber 5 through the material discharge port 21 under the action of gravity, landing on the inclined guide seat and sliding to one side of the storage chamber 5. After the material discharge is completed, the material discharge cover 23 closes, restoring the material suction state.

[0033] S3 Vertical Final Compression: The second level sensor 20 monitors the material level in the storage chamber 5. When a certain amount of pre-compressed material blocks accumulate in the storage chamber 5, the main controller 44 starts the vertical compression program. The piston rod of the second hydraulic cylinder 14 extends, driving the second pressure plate 15 to move vertically downward along the guide groove 18. The clamping teeth 16 at the bottom of the second pressure plate 15 embed into the surface of the material block, performing high-density vertical compaction on the material block and interlocking the fibers tightly. After compression, the piston rod of the second hydraulic cylinder 14 drives the second pressure plate 15 to retract back to its original position. After two stages of compression, horizontal pre-compression and vertical final compression, the volume of scrap material can be significantly reduced, forming a dense material block.

[0034] S4 Anti-clogging Control: Negative pressure sensor 28 monitors the negative pressure value in the negative pressure delivery pipeline 7 in real time. When the negative pressure value is abnormal, the main controller 44 determines that the pipeline is prone to blockage and then activates the anti-clogging program: First, the air replenishment solenoid valve 30 is opened, and outside air enters the pipeline through the air replenishment pipe 29, forming a pulse backflush airflow to disperse the blockage; at the same time, the electric knocking component is activated, and the drive motor 32 drives the control gear 33 to rotate. The tooth groove of the control gear 33 periodically moves the curved lever 35, causing the swinging component 34 to swing back and forth, driving the knocking rod 37 and the rubber knocking ball head 38 to repeatedly knock the outer wall of the pipeline bend. The resulting vibration causes the fibers attached to the pipeline wall to fall off. The combined effect of air replenishment backflush and mechanical knocking quickly clears the blockage and restores the negative pressure delivery capacity.

[0035] S5 Discharge and Circulation: When the material blocks in the storage chamber 5 accumulate to the full load, the main controller 44 issues a full load alarm. The operator opens the discharge door 45, removes the compressed material blocks, and the equipment continues to circulate.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A waste scrap collection device for non-woven fabric production, comprising a collection box (2) fixedly connected to the top outer wall of a base (1), characterized in that, The collection box (2) is provided with a pre-compression chamber (4) and a storage chamber (5) from top to bottom, and a material drop partition (3) is fixed between the pre-compression chamber (4) and the storage chamber (5). The top of the collection box (2) is provided with a negative pressure suction mechanism, and the negative pressure suction mechanism includes a feed hood (6) fixedly connected to the top of the collection box (2), a negative pressure conveying pipe (7) fixedly connected to the top of the feed hood (6), a suction hood (8) fixedly connected to one end of the negative pressure conveying pipe (7), and a centrifugal fan (9) fixedly connected to the side wall of the collection box (2) through a fan bracket. The pre-compression chamber (4) is provided with a horizontal compression mechanism, which includes a first hydraulic cylinder (10) fixedly installed on the side wall of the collection box (2), a horizontal guide assembly, and a first pressure plate (11) fixedly connected to the piston end of the first hydraulic cylinder (10). A first material level sensor (19) is fixedly installed on the top inner wall of the pre-compression chamber (4). The storage chamber (5) is provided with a vertical compression mechanism, which includes a second hydraulic cylinder (14) fixedly installed on the bottom outer wall of the discharge partition (3), a vertical guide assembly, and a second pressure plate (15) fixedly connected to the piston end of the second hydraulic cylinder (14). A second material level sensor (20) is fixedly installed on the bottom outer wall of the discharge partition (3). The top of the material discharge partition (3) is provided with a material discharge port (21), a drive shaft (22) is rotatably installed inside the material discharge port (21), and a material discharge cover plate (23) adapted to the material discharge port (21) is fixedly connected to the drive shaft (22). The negative pressure conveying pipeline (7) is provided with an anti-blocking mechanism, which includes a negative pressure sensor (28) installed on the negative pressure conveying pipeline (7), a gas supply pipe (29) fixedly connected to the negative pressure conveying pipeline (7), a gas supply solenoid valve (30) installed on the gas supply pipe (29), and an electric knocking assembly located at the bend of the negative pressure conveying pipeline (7).

2. The waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The negative pressure conveying pipe (7) is fixedly connected to the top outer wall of the collection box (2) through the pipe support, and the air inlet of the centrifugal fan (9) is connected to the feed hood (6) through the pipe.

3. The waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The horizontal guide assembly includes two guide rails (12) fixedly embedded in the inner walls of the front and rear sides of the pre-compression chamber (4) and two guide sliders (13) welded to the outer walls of the front and rear sides of the first pressure plate (11), and the two guide sliders (13) are slidably connected to the two guide rails (12) respectively.

4. The waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The bottom of the second pressure plate (15) is fixed with evenly distributed clamping teeth (16).

5. The waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The vertical guide assembly includes two guide grooves (18) opened on the inner walls of the front and rear sides of the storage cavity (5) and two guide blocks (17) welded to the outer walls of the front and rear sides of the second pressure plate (15) in sequence, and the two guide blocks (17) are slidably connected to the two guide grooves (18) respectively.

6. The waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The outer end of the drive shaft (22) is provided with a driver for driving the switch of the material discharge cover (23). The driver includes a protective cover (24) fixedly connected to the rear outer wall of the collection box (2), a stepper motor (25) fixedly installed on the rear outer wall of the protective cover (24), a drive gear (26) fixedly mounted on the output shaft of the stepper motor (25), and a transmission gear (27) fixedly mounted on the drive shaft (22). The output shaft of the stepper motor (25) extends through into the protective cover (24), and the drive gear (26) and the transmission gear (27) mesh with each other and are both located inside the protective cover (24).

7. The waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The storage chamber (5) is provided with a guide seat located directly below the discharge port (21), and the guide seat is inclined.

8. The waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The electric striking assembly includes a support plate (31) fixedly connected to the outer wall of the negative pressure conveying pipe (7), a drive motor (32) fixedly installed on the rear outer wall of the support plate (31), a control gear (33) fixedly mounted on the drive motor (32), a swing member (34) rotatably connected to the support plate (31) via a rotating pin, a curved lever (35) welded to the lower outer wall of the swing member (34), a return spring (36) fixedly connected to the outer wall of the curved lever (35), a striking rod (37) welded to the upper outer wall of the swing member (34), and a rubber striking ball head (38) fixed to the end of the striking rod (37). The bottom end of the curved lever (35) extends into the tooth groove of the control gear (33), and one end of the return spring (36) is fixedly connected to the support plate (31) via a spring seat.

9. A waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The opening of the suction hood (8) is provided with an opening area adjustment component, which includes two bearing seats (39) symmetrically fixed to the outer wall of the top of the suction hood (8), a bidirectional screw (40) rotatably installed on the two bearing seats (39), two threaded connecting rods (41) symmetrically screwed to the two opposite thread ends of the bidirectional screw (40), two adjusting plates (42) slidably connected to both sides of the suction hood (8), and a handwheel (43) fixedly connected to the outer wall of one end of the bidirectional screw (40). The two threaded connecting rods (41) are respectively fixedly connected to the two adjusting plates (42).

10. A waste scrap collection device for nonwoven fabric production according to claim 1, characterized in that, The front outer wall of the collection box (2) is fixedly equipped with a main controller (44), and a discharge door (45) that communicates with the storage chamber (5) is hinged to one side of the collection box (2).

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