Door panel laser edge sealing device with waste recycling mechanism

Abstract

The present application relates to plastic door panel production equipment technical field, specifically said is a kind of door panel laser edge sealing equipment with waste recovery mechanism, including PET board edge sealing equipment, edge sealing equipment is equipped with the dust removal pipeline of collecting plastic processing dust, vertical housing is fixed in the side of edge sealing equipment, the upper end of housing is communicated with feed pipe, feed pipe is connected with dust removal pipeline;Vertical sealing sliding fit has horizontal partition in housing, partition divides housing interior into air inlet chamber and filter chamber from top to bottom;Through the cooperation of partition, carousel, spiral guide rod and one-way bearing, utilize the pressure difference change between air inlet chamber and filter chamber after cloth bag filter piece is blocked, automatically drive partition to move down and drive carousel to rotate, realize the automatic rotation switching of cloth bag filter piece, the whole switching process does not need external electric control element and sensor to participate, structure reliability is high, applicable to dust environment, and there is no electric control hysteresis, switching response is timely, effectively guarantee the dust removal stability in the continuous processing process of laser edge sealing equipment.

Description

Technical Field

[0001] This invention relates to the field of plastic door panel production equipment technology, specifically to a door panel laser edge sealing device with a waste recycling mechanism. Background Technology

[0002] PET plastic door panels are widely used in high-end whole-house customization, kitchen and bathroom cabinets, and decorative door panels due to their advantages such as transparent texture, waterproof and moisture-resistant properties, stable structure, and formaldehyde-free environmental protection. Currently, PET plastic door panels generally adopt laser glue-free edge banding technology. By using laser to instantly melt the functional layer of PET special edge banding tape, the edge banding tape and the end face of PET plastic door panel are molecularly fused together. This technology features seamless edge banding, high flatness, stable bonding strength, and excellent aging resistance, and is gradually replacing the traditional hot melt adhesive edge banding technology. During laser edge banding, in order to ensure that the edge banding end face is flat and the edges and corners are uniform and smooth, the equipment needs to simultaneously complete precision finishing processes such as trimming, grinding, fine finishing, and polishing. The processing will continuously generate a large amount of fine PET plastic dust, molten plastic overflow, and edge banding tape cutting residue. The dust removal and filtration structure of existing laser edge banding equipment is mostly a fixed single-compartment filtration structure, which is simple in structure, coarse in filtration method, and lacks automatic filtration function and independent sealed maintenance structure. Because PET plastic dust is fine-textured and highly viscous, it easily adheres to and clogs filter media during long-term operation. This leads to a decrease in internal air pressure and a continuous decline in dust extraction efficiency, resulting in insufficient dust removal and causing dust accumulation at workstations, dust accumulation in the laser path, and particle defects on the surface of the sheets. Furthermore, existing equipment requires complete machine shutdown and opening for filter bag replacement when the filter bags become clogged, making it impossible to perform single-station filter media maintenance and replacement while the equipment is running normally. This severely disrupts the continuous production line processing rhythm of PET door panels, resulting in low production efficiency and significant downtime losses. Therefore, a door panel laser edge-sealing device with a waste recycling mechanism is proposed. This device achieves efficient recycling of plastic waste and stable dust filtration, while allowing filter media maintenance and replacement to be performed without shutting down the equipment. This effectively ensures processing continuity, improves finished product quality, and reduces production and maintenance costs. Summary of the Invention

[0003] To address the problems in the existing technology, this invention provides a door panel laser edge sealing device with a waste recycling mechanism, which realizes efficient recycling of plastic waste and stable dust filtration. At the same time, the filter material can be inspected and replaced without stopping the equipment, effectively ensuring processing continuity, improving the quality of finished products, and reducing production and maintenance costs.

[0004] The technical solution adopted by this invention to solve its technical problem is a door panel laser edge-sealing device with a waste recycling mechanism, including a PET sheet edge-sealing device. The edge-sealing device is equipped with a dust outlet pipe for collecting plastic processing dust. A vertical shell is fixed on one side of the edge-sealing device, and the upper end of the shell is connected to a feed pipe, which is connected to the dust outlet pipe. A horizontal partition is vertically sealed and slidably fitted inside the shell. The partition divides the interior of the shell into an air inlet chamber and a filter chamber. Several first through holes are distributed along the arc direction on the partition. A turntable is rotatably mounted on the lower surface of the partition. Second through holes corresponding to the first through holes are distributed circumferentially on the turntable. A rotating base corresponding to the second through hole is rotatably mounted on the lower surface of the turntable, and a bag filter is assembled at the lower end of the rotating base; a support transmission structure that drives the turntable is installed at the bottom of the partition. When the air pressure difference between the air inlet chamber and the filter chamber exceeds a threshold, the partition is driven to move down and the turntable is driven to rotate through the support transmission structure to switch the bag filter connected to the first through hole; an air duct is connected to the outer side of the lower end of the shell; an inspection port is opened on the side wall of the shell and a movable door is provided to close the inspection port. An elastic isolation structure is provided inside the shell. The movable door is driven by the transmission component to the elastic isolation structure. When the movable door opens the inspection port, the elastic isolation structure is driven to unfold through the transmission component and isolate the bag filter not connected to the first through hole from the filter chamber.

[0005] Specifically, the supporting transmission structure includes an internal gear ring fixed to the inner wall of the housing via a fixed rod; several vertical sliding holes are provided on the internal gear ring, and a spiral guide rod is slidably connected in the sliding holes. A spiral guide block is installed in the sliding holes and slidably connected to the spiral guide rod. The upper end of the spiral guide rod is rotatably connected to the lower surface of the turntable via a rotating seat. A transmission gear is fixed to the spiral guide rod via a one-way bearing. A gear ring that meshes with the transmission gear is provided on the outer circumference of the turntable. A magnetic strip fixedly connected to the inner wall of the housing is magnetically attracted above the partition. Several sets of circumferentially distributed positioning telescopic rods are fixedly connected to the lower surface of the internal gear ring. The positioning telescopic rods are vertically arranged, and the output end of the positioning telescopic rod passes through the internal gear ring and is fixedly connected to the lower surface of the partition.

[0006] Specifically, the rotating base includes a vertically arranged mounting tube, with an external gear ring fixed on the outside of the mounting tube to mesh with the internal gear ring; a filter bag can be detachably mounted at the lower end of the mounting tube, and a cleaning component for cleaning the filter bag is provided in the second through hole.

[0007] Specifically, the cleaning component includes an interlocking U-shaped cleaning rod installed inside the bag filter element, with the top of the U-shaped cleaning rod fixedly connected to the inner wall of the second through hole; an elastic contact element is provided on the outside of the U-shaped cleaning rod, and the elastic contact element abuts against the inner wall of the bag filter element; when the rotating base drives the bag filter element to rotate, the elastic contact element cleans the PET plastic dust adhering to the inner wall of the bag filter element.

[0008] Specifically, the elastic isolation structure includes a first mounting plate fixed to the bottom of the inner wall of the housing, a fan-shaped second mounting plate parallel above the first mounting plate, and an elastic folded sealing film connected between the first mounting plate and the second mounting plate; the side wall of the second mounting plate is in a sealing sliding fit with the inner wall of the housing, a docking ring is fixed in the middle of the second mounting plate, and sealing rings are fixedly connected to the outer side of the lower end of the mounting tube; after the second mounting plate is raised, the docking ring and the lower surface of the sealing ring are in sealing and pressing contact. The edge of the elastic folded sealing film is integrated with two sets of vertical elastic expansion strips. The inner wall of the housing has a sealing groove corresponding to the elastic expansion strips. Several sets of vertically arranged pressure cylinders are fixedly connected to the outside of the mating ring. The upper end of the piston rod of the pressure cylinder corresponds to the lower surface of the sealing ring. The pressure cylinder is connected to the elastic expansion strip through a pipeline.

[0009] Specifically, the transmission assembly includes a mounting cavity located at the bottom of the inner side of the housing; a threaded seat and a sliding seat are fixedly mounted on the side of the second mounting plate, the threaded seat is internally threaded with a vertical screw, the lower end of the screw penetrates the housing and extends into the mounting cavity and is rotatably connected to the housing, and a drive gear is fixedly connected to the bottom end of the screw; a positioning rod is vertically slidably assembled inside the sliding seat, and the lower end of the positioning rod is fixed to the bottom surface of the housing; A drive shaft is vertically installed inside the mounting cavity. A speed-changing gear that meshes with the drive gear is fixed on the drive shaft. A drive gear that drives the moving door is fixed on the upper end of the drive shaft. The drive gear meshes with the moving door for transmission.

[0010] Specifically, a slider is fixedly connected to the side of the sliding door near the housing, and a groove is provided on the outside of the housing to slide horizontally with the slider; a drive groove communicating with the mounting cavity is opened on the outside of the housing, and a drive rack corresponding to the drive groove is fixedly connected to one side of the sliding door, and the drive rack meshes with the drive gear for transmission; a push-pull handle is installed on the outside of the sliding door.

[0011] Specifically, the side of the sliding door facing the inspection port is detachably connected to an annular sliding sealing strip; a sliding sealing ring is embedded in the outer peripheral wall of the partition.

[0012] The beneficial effects of this invention are: (1) The door panel laser edge sealing equipment with waste recycling mechanism described in this invention, through the cooperation of partition, turntable, spiral guide rod and one-way bearing, utilizes the pressure difference change between the air inlet chamber and the filter chamber after the bag filter is blocked, automatically drives the partition to move down and drives the turntable to rotate, realizes the automatic rotation and switching of the bag filter. The entire switching process does not require the participation of external electrical control components and sensors, has high structural reliability, is suitable for dusty environments, and has no electrical control lag. The switching response is timely, effectively ensuring the dust removal stability during the continuous processing of the laser edge sealing equipment.

[0013] (2) The door panel laser edge sealing equipment with waste recycling mechanism described in this invention, through the cooperation of the moving door, the transmission component and the elastic isolation structure, the transmission component drives the elastic isolation structure to unfold in advance before the inspection port is opened, so as to completely isolate the filter bag to be inspected from the filter chamber. This allows the operator to directly disassemble and replace the filter bag in the sealed isolation area after opening the door. The negative pressure of the filter chamber is not affected, and the edge sealing equipment can replace the filter material without stopping the machine. At the same time, it avoids the problem of dust overflowing at the moment of opening the door, causing environmental pollution and workpiece pollution. It is easy to operate and has high maintenance efficiency.

[0014] (3) The door panel laser sealing equipment with waste recycling mechanism described in this invention sets a fixed U-shaped cleaning rod and elastic contact member inside the filter bag, and drives the filter bag to rotate in conjunction with the rotating base, so that the elastic contact member continuously scrapes the PET plastic dust adhering to the inner wall of the filter bag, and completes the self-cleaning of the inner wall of the filter bag in the filtration process, effectively delaying the filter hole clogging rate, extending the duration of a single filtration operation, and reducing the frequency of manual cleaning. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is an isometric view of the present invention; Figure 2 This is an isometric view of the housing of the present invention; Figure 3 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 4 for Figure 3 Enlarged view of region A; Figure 5 This is a schematic diagram of the connection structure between the partition and the internal toothed ring of the present invention; Figure 6 This is a schematic cross-sectional view of the partition structure of the present invention; Figure 7 for Figure 6 Enlarged view of region B; Figure 8 This is a schematic diagram of the mounting pipe connection structure of the present invention; Figure 9 This is a schematic diagram of the U-shaped cleaning rod structure of the present invention; Figure 10 This is a schematic diagram of the connection structure between the first mounting plate and the second mounting plate of the present invention; Figure 11 This is a schematic diagram of the movable door structure of the present invention; Figure 12 This is a schematic diagram of the housing structure of the present invention without the movable door installed; Figure 13This is a schematic diagram of the mounting cavity structure of the present invention; In the diagram: 1. Edge sealing equipment; 2. Dust outlet pipe; 3. Shell; 4. Feed pipe; 5. Baffle plate; 6. Air inlet chamber; 7. Filter chamber; 8. First through hole; 9. Turntable; 10. Second through hole; 11. Push-pull handle; 12. Bag filter element; 13. Exhaust duct; 14. Inspection port; 15. Sliding door; 16. Internal gear ring; 17. Sliding hole; 18. Spiral guide rod; 19. Rotating seat; 20. One-way bearing; 21. Transmission gear; 22. Gear ring; 23. Magnetic strip; 24. Positioning telescopic rod; 25. Installation pipe 26. External gear ring; 27. U-shaped cleaning rod; 28. First mounting plate; 29. ​​Second mounting plate; 30. Elastic folded sealing film; 31. Butt ring; 32. Sealing ring; 33. Elastic expansion strip; 34. Sealing groove; 35. Pressure supply cylinder; 36. Mounting cavity; 37. Threaded seat; 38. Sliding seat; 39. Screw; 40. Drive gear; 41. Positioning rod; 42. Drive shaft; 43. Speed ​​change gear; 44. Drive gear; 45. Slider; 46. Slide groove; 47. Drive groove; 48. Drive rack. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] To achieve efficient recycling of plastic waste and stable dust filtration, while enabling filter media maintenance and replacement without equipment shutdown, effectively ensuring processing continuity, improving finished product quality, and reducing production and maintenance costs, as one embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 12 As shown, the present invention discloses a door panel laser edge banding device with a waste recycling mechanism, comprising a PET sheet edge banding device 1, the edge banding device 1 having a dust outlet pipe 2 for collecting plastic processing dust, a vertical housing 3 fixed on one side of the edge banding device 1, the upper end of the housing 3 being connected to a feed pipe 4, the feed pipe 4 being connected to the dust outlet pipe 2; a horizontal partition 5 is vertically sealed and slidably fitted inside the housing 3, the partition 5 dividing the interior of the housing 3 into an air inlet chamber 6 and a filter chamber 7, a plurality of first through holes 8 distributed along the arc direction on the partition 5, a turntable 9 being rotatably mounted on the lower surface of the partition 5, and second through holes 10 corresponding to the first through holes 8 being distributed circumferentially on the turntable 9; A rotating base corresponding to the second through hole 10 is rotatably mounted on the lower surface of the turntable 9. A bag filter element 12 is assembled at the lower end of the rotating base. A support transmission structure that drives the turntable 9 is installed at the bottom of the partition plate 5. When the air pressure difference between the air inlet chamber 6 and the filter chamber 7 exceeds the threshold, the partition plate 5 is driven to move down and the turntable 9 is driven to rotate through the support transmission structure to switch the bag filter element 12 that is connected to the first through hole 8. An air duct 13 is connected to the outer side of the lower end of the housing 3. An inspection port 14 is opened on the side wall of the housing 3 and a movable door 15 is provided to close the inspection port 14. An elastic isolation structure is provided inside the housing 3. The movable door 15 is driven by the transmission component to the elastic isolation structure. When the movable door 15 opens the inspection port 14, the elastic isolation structure is driven to unfold through the transmission component and isolate the bag filter element 12 that is not connected to the first through hole 8 from the filter chamber 7.

[0019] When in use, the PET door panel is fed into the laser edge banding equipment 1 to perform laser glue-free edge banding. The equipment simultaneously performs edge trimming, grinding, fine finishing and polishing processes on the edge banding position of the door panel. The processing continuously generates highly viscous and fine-particle PET plastic dust and cutting waste. All waste dust is collected centrally through the dust outlet pipe 2 of the equipment and sent into the interior of the vertical housing 3 through the feed pipe 4. The exhaust pipe 13 continuously draws air outward, forming a stable negative pressure airflow inside the housing 3, which actively pulls the dust waste into the filter chamber 7 of the housing 3. Dust and waste enter the air inlet chamber 6. The airflow passes through the first through hole 8 and the second through hole 10, which is aligned and connected with the turntable 9, and flows downward into the bag filter element 12. The bag filter element 12 intercepts PET plastic dust, and the clean airflow is drawn out through the bottom air duct 13 of the housing 3, completing the waste recycling and filtration. After prolonged processing, a large amount of sticky PET dust adheres to the inner wall of the corresponding workstation bag filter element 12, gradually clogging the filter pores, increasing ventilation resistance, and causing the pressure difference between the air inlet chamber 6 and the filter chamber 7 to continuously rise. When the pressure difference exceeds the preset threshold, the air pressure in the air inlet chamber 6 applies downward pressure, and the negative pressure in the exhaust pipe 13 pulls downward simultaneously, jointly pushing the partition 5 to slide vertically downward along the inner wall of the shell 3 for sealing. The downward movement of the partition 5 drives the support transmission structure to rotate, driving the turntable 9 to rotate circumferentially, and the second through hole 10 rotates synchronously, switching the bag filter element 12 connected to the first through hole 8. After the turntable 9 rotates, it directly switches to a new set of bag filter elements 12 for filtration. The filter material can be automatically rotated without stopping the entire machine, and the processing process does not require machine downtime. When the filter element 12 needs to be cleaned or replaced, open the sliding door 15 of the inspection port 14. When the sliding door 15 moves, it drives the transmission assembly to operate synchronously. The transmission assembly drives the elastic isolation structure to unfold. The elastic isolation structure isolates the filter element 12 that is not connected to the first through hole 8 from the filter chamber 7. The housing 3 and filter chamber 7 remain sealed, and the sealing device 1 can continue to operate. Operators can inspect and replace the filter element 12 in the isolation area individually. After the inspection is completed, close the sliding door 15. The transmission assembly reverses and drives the elastic isolation structure to retract. The replaced filter element 12 is reconnected to the filter chamber 7 and is ready to be used when the turntable 9 switches over next time. The inspection and replacement of the filter element 12 can be completed under normal equipment processing conditions, solving the problems of traditional equipment requiring the entire machine to be stopped, interrupting the production line, and resulting in low production efficiency when changing filter media.

[0020] To achieve automatic filter media replacement without manual intervention, for example, such as Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, the present invention also includes a supporting transmission structure comprising an internal gear ring 16 fixed to the inner wall of the housing 3 by a fixing rod; the internal gear ring 16 is provided with a plurality of vertical sliding holes 17, a spiral guide rod 18 is slidably connected in the sliding holes 17, a spiral guide block is installed in the sliding holes 17 and slidably connected to the spiral guide rod 18, the upper end of the spiral guide rod 18 is rotatably connected to the lower surface of the turntable 9 through a rotating seat 19, a transmission gear 21 is fixedly connected to the spiral guide rod 18 through a one-way bearing 20, and a gear ring 22 that meshes with the transmission gear 21 is provided on the outer periphery of the turntable 9; a magnetic strip 23 fixedly connected to the inner wall of the housing 3 is magnetically attracted above the partition plate 5; a plurality of circumferentially distributed positioning telescopic rods 24 are fixedly connected to the lower surface of the internal gear ring 16, the positioning telescopic rods 24 are vertically arranged, and the output end of the positioning telescopic rods 24 passes through the internal gear ring 16 and is fixedly connected to the lower surface of the partition plate 5.

[0021] In use, in the initial working state, the partition 5 is magnetically attracted and positioned by the magnetic strip 23 above, while the positioning telescopic rod 24 provides vertical limiting support for the partition 5 to ensure the stability of the partition 5. When a large amount of sticky PET dust adheres to the inner wall of the filter element 12 and causes blockage, the pressure difference between the air inlet chamber 6 and the filter chamber 7 continues to increase, and the downward pressure on the partition 5 gradually increases. When the pressure exceeds the magnetic attraction force of the magnetic strip 23, the partition 5 and the magnetic strip 23 disengage from each other, and the pressure difference continues to push the partition 5 to move downward vertically. During the downward movement of the partition 5, the positioning telescopic rod 24 is pressed down simultaneously. When the partition 5 moves downward, it drives the spiral guide rod 18 to move downward synchronously. The spiral guide rod 18 moves along the spiral inside the sliding hole 17. When the guide blocks slide relative to each other, the spiral guide rod 18 is driven to rotate by the spiral guide block. The transmission gear 21 is driven to rotate synchronously through the one-way bearing 20. The transmission gear 21 meshes with the gear ring 22 set on the outer circumference of the turntable 9, thereby driving the turntable 9 to rotate in a circular motion. The rotation of the turntable 9 synchronously switches the bag filter element 12 that is connected to the first through hole 8 of the partition 5. The clean bag filter element 12 that has been inspected and replaced is switched to the working position for filtration, realizing automatic replacement of filter media without manual intervention. After the workstation switch is completed, the clean bag filter element 12 conducts airflow, the internal pressure difference of the housing 3 drops rapidly, and the downward pressure on the partition 5 decreases accordingly. The positioning telescopic rod 24 pushes the partition 5 upward to reset. During the rise of the partition 5, the spiral guide rod 18 moves upward along the spiral guide block. At this time, the one-way bearing 20 acts as a clutch limiter and will not drive the turntable 9 to rotate in the opposite direction. After the partition 5 is fully raised and reset, the upper surface of the partition 5 is magnetically attracted and attached to the magnetic strip 23 fixed to the inner wall of the housing 3, completing the entire self-circulation switching process. It waits stably for the next filter bag blockage pressure difference to trigger the rotation action without the need for additional electrical control drive, reducing equipment operation and maintenance costs. Furthermore, it should be noted that the magnetic attraction between the magnetic strip 23 and the upper edge of the partition 5 can further improve the sealing performance of the edge of the partition 5 after it is reset.

[0022] For example, such as Figure 6 , Figure 7 , Figure 8 As shown, the present invention also includes a rotating base comprising a vertically arranged mounting tube 25, an external gear ring 26 that meshes with and drives the internal gear ring 16 fixedly on the outside of the mounting tube 25; a bag filter element 12 is detachably mounted at the lower end of the mounting tube 25, and a cleaning element for cleaning the bag filter element 12 is provided in the second through hole 10.

[0023] During use, when the turntable 9 rotates in a circular motion under the pressure differential, it synchronously drives each mounting tube 25 to rotate. During the rotation of the turntable 9, the outer toothed ring 26 engages and rolls along the annular surface of the inner toothed ring 16, thereby driving the mounting tube 25 to rotate on its own. When the mounting tube 25 rotates, it can drive the bottom bag filter element 12 to rotate synchronously. With the help of the cleaning component, the inner wall dust of all bag filter elements 12 can be cleaned simultaneously during the rotation of the turntable 9 to switch positions, reducing the degree of filter media clogging and increasing the duration of single filtration. At the same time, the bag filter element 12 adopts a detachable assembly structure. During subsequent maintenance, the bag filter element 12 can be directly removed from the lower end of the mounting tube 25, which is simple to disassemble and assemble, and reduces the difficulty of filter media replacement.

[0024] To quickly scrape off sticky PET plastic dust adhering to the inner wall of the bag, for example, such as Figure 5 , Figure 6 , Figure 8 As shown, the present invention also includes a cleaning component comprising an interlaced U-shaped cleaning rod 27 disposed within the bag filter 12, the top end of the U-shaped cleaning rod 27 being fixedly connected to the inner wall of the second through hole 10; an elastic abutment is provided on the outer side of the U-shaped cleaning rod 27, the elastic abutment abutting against the inner wall of the bag filter 12; when the rotating base drives the bag filter 12 to rotate, the elastic abutment cleans the PET plastic dust adhering to the inner wall of the bag filter 12.

[0025] When in use, the mounting tube 25 rotates due to the meshing transmission of the outer toothed ring 26 and the inner toothed ring 16, which will drive the bag filter element 12 assembled at the lower end to rotate synchronously. During the rotation of the bag filter element 12, the U-shaped cleaning rod 27 remains stationary. The elastic contact element on the outside of the U-shaped cleaning rod 27 continuously abuts against the inner wall of the bag filter element 12. Relying on the rotation of the bag filter element 12 relative to the U-shaped cleaning rod 27, continuous scraping is formed to quickly scrape off the sticky PET plastic dust adhering to the inner wall of the bag, relieve filter pore blockage, and stabilize the dust collection and filtration efficiency. During the process of the rotary table 9 rotating and switching workstations under the drive of differential pressure, the first through hole 8 on the partition 5 and the second through hole 10 on the rotary table 9 gradually stagger and misalign, and the air inlet chamber 6 and the filter chamber 7 are temporarily completely sealed, blocking the downward flow of dust airflow. This can prevent the dust airflow from continuously scouring the filter bag and causing internal waste to splash and re-attach and contaminate the filter material. At the same time, this closed state will further increase the air pressure inside the air inlet chamber 6, increase the downward pressure on the partition 5, and help push the partition 5 to move down stably, ensuring that the rotary table 9 completes the workstation switching action completely. After the turntable 9 rotates to the workstation switching position, the first through hole 8 and the second through hole 10 are re-aligned and connected, the air inlet chamber 6 and the filter chamber 7 are restored to conduction, and the dust airflow re-enters the corresponding bag filter element 12 to carry out filtration. The filter bag can be self-cleaned simultaneously without additional machine shutdown, reducing the frequency of manual cleaning and maintaining a stable dust removal effect.

[0026] To enable independent filter media replacement at each workstation without shutting down the production line, for example, such as Figure 3 , Figure 4 , Figure 10 , Figure 12 , Figure 13 As shown, the present invention also includes an elastic isolation structure comprising a first mounting plate 28 fixed to the bottom of the inner wall of the housing 3, a fan-shaped second mounting plate 29 parallel above the first mounting plate 28, and an elastic folded sealing film 30 connected between the first mounting plate 28 and the second mounting plate 29; the side wall of the second mounting plate 29 is in a sealing sliding fit with the inner wall of the housing 3, a docking ring 31 is fixedly provided in the middle of the second mounting plate 29, and sealing rings 32 are fixedly connected to the outer side of the lower end of the mounting tube 25; after the second mounting plate 29 is raised, the docking ring 31 and the lower surface of the sealing ring 32 are in sealing and pressing contact. The edge of the elastic folded sealing film 30 is integrally connected to two sets of vertical elastic expansion strips 33. The inner wall of the housing 3 is provided with sealing grooves 34 corresponding to the elastic expansion strips 33. Several sets of vertically arranged pressure cylinders 35 are fixedly connected to the outside of the mating ring 31. The upper end of the piston rod of the pressure cylinder 35 corresponds to the lower surface of the sealing ring 32. The pressure cylinder 35 is connected to the elastic expansion strips 33 through pipelines.

[0027] When the equipment is in use, and it is necessary to disassemble and replace the bag filter element 12 in the idle station, the movable door 15 on the side wall of the housing 3 is pulled outward. The movement of the movable door 15 will output power through the transmission unit, driving the second mounting plate 29 to slide upward in a sealed manner. During the upward movement of the second mounting plate 29, the elastic folded sealing film 30 is stretched and unfolded upward in sync, and the elastic expansion strip 33 slides upward along the corresponding sealing groove 34 in sync. When the second mounting plate 29 is raised to the height of the designated isolation station, the mating ring 31 and the lower surface of the sealing ring 32 are tightly pressed together. At the same time, the piston rod of the pressure cylinder 35 pushes the lower surface of the sealing ring 32 upward, and the pressure cylinder 35 simultaneously delivers pressure medium into the elastic expansion strip 33, so that the elastic expansion strip 33 expands and tightly fills the sealing groove 34 of the housing 3, forming a double-layer sealing structure. Relying on the dual sealing effect of the compression seal of the docking ring 31 and the sealing ring 32 and the expansion seal of the elastic expansion strip 33, the rotating base, the mounting pipe 25 and the bag filter 12 corresponding to the maintenance station are completely isolated from the filter chamber 7, preventing the maintenance port 14 from communicating with the gas inside the filter chamber 7. The PET door panel edge sealing processing equipment can maintain uninterrupted operation and will not stop the whole machine due to the replacement of filter material. The operator can directly disassemble the old bag filter 12 in the isolated and closed area and assemble and fix the new bag filter 12 to the lower end of the mounting pipe 25. The disassembly and assembly operation is not affected by the negative pressure and dust airflow inside the shell 3, and avoids dust leakage during the replacement process from contaminating the equipment and workpieces. After the bag filter element 12 is replaced, the sliding door 15 is pushed inward. The transmission mechanism reverses and drives the second mounting plate 29 to slide downward. During the downward movement of the second mounting plate 29, it no longer squeezes the pressure cylinder 35. After the cylinder is depressurized, the elastic expansion strip 33 gradually contracts and disengages from the sealing groove 34. The elastic folded sealing film 30 folds downward and contracts to return to its initial closed state. The docking ring 31 separates from the bottom sealing ring 32 of the mounting tube 25, releasing the isolation and sealing of the corresponding workstation. The newly replaced clean bag filter element 12 returns to the state of communication with the filter chamber 7 along with the mounting tube 25. It is left to stand and wait for the subsequent rotation of the turntable 9 to switch workstations before it is put into filtration operation. After other bag filter elements 12 become clogged and trigger the rotation action of the turntable 9, the new bag filter element 12 can guide the airflow of the air inlet chamber 6 to participate in dust filtration. It can achieve independent replacement of filter material at a single workstation without stopping the production line, which greatly reduces equipment downtime losses and improves the continuous production efficiency of PET door panels.

[0028] To facilitate the movement of the second mounting plate 29, for example, such as Figure 3 , Figure 4 , Figure 10 As shown, the present invention also includes a transmission assembly comprising a mounting cavity 36 located at the bottom of the inner side of the housing 3; a threaded seat 37 and a sliding seat 38 are fixedly mounted on the side of the second mounting plate 29, the threaded seat 37 is internally threaded with a vertical screw 39, the lower end of the screw 39 penetrates the housing 3 and extends into the mounting cavity 36 and is rotatably connected to the housing 3, and a drive gear 40 is fixedly connected to the bottom end of the screw 39; a positioning rod 41 is vertically slidably assembled in the sliding seat 38, and the lower end of the positioning rod 41 is fixed to the bottom surface of the housing 3; Inside the mounting cavity 36, a drive shaft 42 is vertically installed. A speed-changing gear 43 that meshes with the drive gear 40 is fixed on the drive shaft 42. An active gear 44 that drives the movable door 15 is fixed on the upper end of the drive shaft 42. The active gear 44 meshes with the movable door 15 for transmission.

[0029] When in use, when it is necessary to carry out maintenance or replacement of the idle workstation bag filter element 12, the movable door 15 is pulled outward in a forward direction. The movable door 15 and the drive gear 44 at the upper end of the drive shaft 42 form a meshing transmission cooperation. The pulling action drives the drive gear 44 to rotate. The drive gear 44 drives the drive shaft 42 to rotate synchronously. The speed change gear 43 on the drive shaft 42 rotates synchronously. The speed change gear 43 and the drive gear 40 mesh with each other to drive the screw 39 to rotate continuously in a circumferential direction. When the screw 39 rotates, the threaded seat 37 is lifted upward along the screw 39. The sliding seat 38 fixed to the side of the second mounting plate 29 slides vertically upward along the positioning rod 41. The bottom end of the positioning rod 41 is fixed to the bottom surface of the housing 3, which restricts the sliding seat 38 to only move vertically throughout the entire process, so as to prevent the second mounting plate 29 from shifting during the lifting process. The threaded seat 37 is lifted simultaneously, which drives the second mounting plate 29 to slide upward in a sealed manner. Together with the elastic isolation structure, it completes the sealing and isolation of the work station to be inspected, completely isolating the filter element 12 to be replaced from the filter chamber 7. At this time, the negative pressure and airflow inside the filter chamber 7 are not disturbed by the maintenance operation, and the laser edge sealing of the door panel can continue to run without interruption, without the need to stop the whole machine. After the operator completes the disassembly of the old filter bag 12 and the assembly and fixing of the new filter bag 12, the operator pushes the sliding door 15 inward to close it. The sliding door 15 engages in reverse, driving the drive gear 44 to rotate in the opposite direction. The drive shaft 42, the transmission gear 43, and the drive gear 40 then drive in the opposite direction. The screw 39 rotates in the opposite direction, causing the threaded seat 37 to fall downward along the screw 39. The sliding seat 38 slides vertically down along the positioning rod 41. The second mounting plate 29 is reset to its initial low position. The elastic isolation structure retracts simultaneously, releasing the sealing isolation of the corresponding workstation. The newly replaced clean filter bag 12 is reconnected to the filter chamber 7 and left to stand, waiting for the turntable 9 to rotate and switch workstations before being put into filtration use.

[0030] For example, such as Figure 2 , Figure 11 , Figure 12 , Figure 13 As shown, the present invention also includes a slider 45 fixedly connected to the side of the movable door 15 near the housing 3, and a sliding groove 46 on the outer side of the housing 3 that slides horizontally with the slider 45; a drive groove 47 communicating with the mounting cavity 36 is opened on the outer side of the housing 3, and a drive rack 48 corresponding to the drive groove 47 is fixedly connected to one side of the movable door 15, and the drive rack 48 meshes with the drive gear 44 for transmission; a push-pull handle 11 is mounted on the outer side of the movable door 15.

[0031] When it is necessary to replace the filter element 12, the operator holds the push-pull handle 11 and pulls the sliding door 15 outward. The slider 45 slides horizontally outward along the sliding groove 46 of the housing 3, and simultaneously drives the drive rack 48 to move outward in the drive groove 47. The drive rack 48 continuously meshes with the drive gear 44 inside the mounting cavity 36. Before the sliding door 15 is fully opened and the inspection port 14 is connected to the outside atmosphere, the rack disengages from the drive gear 44, and the transmission assembly completes operation. The elastic isolation structure has completely sealed and isolated the work area to be inspected, forming an independent and sealed space in advance to avoid the problem of air leakage in the inspection port 14. Continue to pull the push-pull handle 11 until the inspection port 14 is fully open, and the operator can then disassemble and replace the filter element 12 in the isolated area. After the filter element 12 is replaced, hold the push-pull handle 11 and push the sliding door 15 inward. The slider 45 slides in the opposite direction along the slide groove 46, driving the rack 48 to move inward synchronously. After the inspection port 14 is closed by the sliding door 15, the rack meshes with the drive gear 44, driving the drive gear 44 to rotate, and through the transmission component, the elastic isolation structure is driven to retract and reset synchronously.

[0032] For example, the present invention also includes an annular sliding sealing strip detachably connected to the side of the movable door 15 facing the access port 14; and a sliding sealing ring embedded in the outer peripheral sidewall of the partition 5.

[0033] During use, the annular sliding sealing strip on the sliding door 15 ensures that the inspection port 14 is completely sealed after the sliding door 15 is closed, preventing dust and negative pressure inside the housing 3 from leaking outward. By relying on the embedded sliding sealing ring on the outer periphery of the partition 5, the air intake chamber 6 and the filter chamber 7 can be sealed and separated during the vertical sliding of the partition 5, thus avoiding the attenuation of air pressure inside the chamber.

[0034] In use, the PET door panel is fed into the laser edge sealing equipment 1 to complete the edge trimming, grinding and polishing process. The sticky PET fine dust generated during the process is sent into the air inlet chamber 6 of the vertical shell 3 through the dust outlet pipe 2 and the feed pipe 4. The air duct 13 at the bottom of the shell 3 continuously draws air to form a stable negative pressure. The airflow passes through the first through hole 8 of the partition 5 and the second through hole 10 of the turntable 9 in sequence. The dust is intercepted by the bag filter 12, and the clean airflow is discharged to complete the waste recycling. After long-term filtration, the inner wall of the filter bag is covered with PET dust, which obstructs ventilation. The pressure difference between the air inlet chamber 6 and the filter chamber 7 continues to rise. The pressure overcomes the attraction force of the magnetic strip 23, and the partition 5 slides down and presses down the positioning telescopic rod 24. The partition 5 moves down and drives the spiral guide rod 18 down along the spiral guide block, converting linear motion into rotational motion. Through the one-way bearing 20, the transmission gear 21 meshes with the gear ring 22 of the turntable 9, driving the turntable 9 to rotate circumferentially. The turntable 9 switches the alignment relationship between the first through hole 8 and the second through hole 10, connecting the clean filter bag station to the air circuit. No sensors, motors, solenoid valves and other electronic control components are required. It is not prone to failure in harsh dust environments and there is no lag in electronic control signals. The rotation of turntable 9 drives the installation tube 25 and the filter bag 12 to rotate synchronously. The U-shaped cleaning rod 27 inside the filter bag remains fixed, while the elastic contact piece on the outside continuously scrapes against the inner wall of the filter bag, cleaning the filter bag 12. This significantly reduces the frequency of manual cleaning, slows down the clogging of the filter holes, and extends the duration of continuous filtration. At the same time, when switching positions, the first through hole 8 and the second through hole 10 briefly alternate to close the air passage, further increasing the air pressure in the air inlet chamber 6. The auxiliary baffle 5 moves completely downward to complete the repositioning of turntable 9, while blocking the airflow and preventing the dust from splashing and re-adhering to the filter bag. After the turntable 9 completes the workstation switching, the clean bag guides the airflow, the pressure difference of the shell 3 drops rapidly, and the positioning telescopic rod 24 pushes the partition 5 upward to reset; the upward movement of the partition 5 drives the spiral guide rod 18 to slide in the opposite direction, the one-way bearing 20 rotates without driving the turntable 9, and after the partition 5 is fully raised, it re-magnetically adheres to the magnetic strip 23 and seals. The reset magnetic strip 23 adsorbs and seals the upper gap of the partition 5, further improving the sealing of the air inlet chamber 6 and stabilizing the negative pressure of the whole machine; the entire switching cycle runs automatically back and forth without manual intervention, ensuring uninterrupted dust removal on the door panel production line; When the clogged filter bag needs to be replaced, hold the outward push-pull handle 11 of the movable door 15 and pull the door body outward. The slider 45 slides horizontally along the slide groove 46 of the housing 3, and the drive rack 48 moves synchronously to engage the drive gear 44. The rack drives the drive shaft 42, the speed change gear 43, and the screw 39 in sequence. The screw 39 lifts the threaded seat 37 and the second mounting plate 29 and moves them upward as a whole. The elastic folded sealing film 30 is stretched upward, and the elastic expansion strip 33 is stretched upward along the sealing groove 34. The second mounting plate 29 and the mating ring 31 squeeze the sealing ring 32 of the mounting tube 25. The pressure cylinder 35 simultaneously tightens the sealing ring 32 and pressurizes and expands the elastic expansion strip 33, forming a double-layer isolation. The double-layer isolation is completed before the inspection port 14 is fully opened and connected to the outside atmosphere. The equipment can be operated and maintained without shutting down the whole machine. The double-layer sealing structure prevents dust leakage and air pressure loss when the door is opened, and will not contaminate the processed workpiece and the workshop environment. After the inspection port 14 is fully open, the operator removes the clogged filter bag 12 from the lower end of the installation tube 25 in an independent, sealed isolation area, installs a brand new filter bag 12, and completes the assembly and fixation. After the filter bag 12 is replaced, the push-pull handle 11 is pushed inward to close the moving door 15, driving the rack 48 to mesh with the gear pair in the opposite direction, and the screw 39 rotates in the opposite direction to drive the second mounting plate 29 to move downward and reset; the pressure cylinder 35 releases pressure, the elastic expansion strip 33 contracts and disengages from the sealing groove 34, the elastic folded sealing film 30 is pulled downward, the docking ring 31 separates from the sealing ring 32, the newly replaced filter bag station is reconnected to the filter chamber 7, and the replaced clean filter bag is placed to stand still, waiting for the next pressure differential to trigger the turntable 9 to automatically start the filtration operation.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A door panel laser edge-sealing device with a waste recycling mechanism, characterized in that, The equipment includes a PET sheet edge sealing device (1), which is equipped with a dust outlet pipe (2) for collecting plastic processing dust. A vertical shell (3) is fixed on one side of the edge sealing device (1). The upper end of the shell (3) is connected to the feed pipe (4), which is connected to the dust outlet pipe (2). A horizontal partition (5) is vertically sealed and slidably fitted inside the shell (3). The partition (5) divides the interior of the shell (3) into an air inlet chamber (6) and a filter chamber (7). Several first through holes (8) are distributed along the arc direction on the partition (5). A turntable (9) is rotatably mounted on the lower surface of the partition (5). Second through holes (10) corresponding to the first through holes (8) are distributed circumferentially on the turntable (9). A rotating base corresponding to the second through hole (10) is rotatably mounted on the lower surface of the turntable (9). A bag filter (12) is assembled at the lower end of the rotating base. A support transmission structure that drives the turntable (9) is installed at the bottom of the partition (5). The partition (5) is driven to move down and the turntable (9) is driven to rotate through the support transmission structure to switch the bag filter (12) connected to the first through hole (8). An air duct (13) is connected to the outer side of the lower end of the housing (3). An inspection port (14) is opened on the side wall of the housing (3) and a movable door (15) is provided to close the inspection port (14). An elastic isolation structure is provided inside the housing (3). The movable door (15) is driven by the transmission component to the elastic isolation structure. When the movable door (15) opens the inspection port (14), the elastic isolation structure is driven to unfold through the transmission component and the bag filter (12) that is not connected to the first through hole (8) is isolated from the filter chamber (7).

2. The door panel laser edge-sealing equipment with a waste recycling mechanism according to claim 1, characterized in that, The supporting transmission structure includes an internal gear ring (16) fixed to the inner wall of the housing (3) by a fixing rod; the internal gear ring (16) has several vertical sliding holes (17), a spiral guide rod (18) is slidably connected in the sliding holes (17), a spiral guide block is installed in the sliding holes (17) and slidably connected to the spiral guide rod (18), the upper end of the spiral guide rod (18) is rotatably connected to the lower surface of the turntable (9) through a rotating seat (19), and a one-way bearing (20) is connected to the spiral guide rod (18). A transmission gear (21) is fixedly connected, and a gear ring (22) that meshes with the transmission gear (21) is provided on the outer periphery of the turntable (9); a magnetic strip (23) that is fixedly connected to the inner wall of the housing (3) is magnetically attracted above the partition (5); a number of circumferentially distributed positioning telescopic rods (24) are fixedly connected to the lower surface of the inner gear ring (16). The positioning telescopic rods (24) are vertically set, and the output end of the positioning telescopic rods (24) passes through the inner gear ring (16) and is fixedly connected to the lower surface of the partition (5).

3. A door panel laser edge-sealing device with a waste recycling mechanism according to claim 2, characterized in that, The rotating base includes a vertically arranged mounting tube (25), and an external gear ring (26) that meshes with the internal gear ring (16) is fixed on the outside of the mounting tube (25); a bag filter element (12) can be detachably assembled at the lower end of the mounting tube (25), and a cleaning element for cleaning the bag filter element (12) is provided in the second through hole (10).

4. A door panel laser edge-sealing device with a waste recycling mechanism according to claim 3, characterized in that, The cleaning component includes an interlocking U-shaped cleaning rod (27) installed inside the bag filter (12). The top of the U-shaped cleaning rod (27) is fixedly connected to the inner wall of the second through hole (10). An elastic contact element is provided on the outside of the U-shaped cleaning rod (27), and the elastic contact element abuts against the inner wall of the bag filter (12). When the rotating base drives the bag filter (12) to rotate, the elastic contact element cleans the PET plastic dust adhering to the inner wall of the bag filter (12).

5. A door panel laser edge-sealing device with a waste recycling mechanism according to claim 4, characterized in that, The elastic isolation structure includes a first mounting plate (28) fixed to the bottom of the inner wall of the housing (3), a fan-shaped second mounting plate (29) parallel above the first mounting plate (28), and an elastic folded sealing film (30) connected between the first mounting plate (28) and the second mounting plate (29); the side wall of the second mounting plate (29) is sealed and slidingly fitted with the inner wall of the housing (3), a docking ring (31) is fixed in the middle of the second mounting plate (29), and sealing rings (32) are fixedly connected to the outer side of the lower end of the mounting tube (25); after the second mounting plate (29) is raised, the docking ring (31) and the lower surface of the sealing ring (32) are sealed and squeezed into contact. The edge of the elastic folded sealing film (30) is integrally connected to two sets of vertical elastic expansion strips (33), and the inner wall of the housing (3) is provided with a sealing groove (34) corresponding to the elastic expansion strip (33); several sets of vertically arranged pressure cylinders (35) are fixedly connected to the outside of the docking ring (31), the upper end of the piston rod of the pressure cylinder (35) corresponds to the lower surface of the sealing ring (32), and the pressure cylinder (35) is connected to the elastic expansion strip (33) through a pipeline.

6. A door panel laser edge-sealing device with a waste recycling mechanism according to claim 5, characterized in that, The transmission assembly includes a mounting cavity (36) located at the bottom of the inner side of the housing (3); a threaded seat (37) and a sliding seat (38) are fixedly mounted on the side of the second mounting plate (29); a vertical screw (39) is threadedly connected to the threaded seat (37); the lower end of the screw (39) penetrates the housing (3) and extends into the mounting cavity (36) and is rotatably connected to the housing (3); a drive gear (40) is fixedly connected to the bottom end of the screw (39); a positioning rod (41) is vertically slidably mounted inside the sliding seat (38); the lower end of the positioning rod (41) is fixed to the bottom surface of the housing (3); The mounting cavity (36) is vertically provided with a drive shaft (42), and a speed-changing gear (43) that meshes with the drive gear (40) is fixed on the drive shaft (42). The upper end of the drive shaft (42) is fixed with an active gear (44) that drives the movable door (15). The active gear (44) meshes with the movable door (15) for transmission.

7. A door panel laser edge-sealing device with a waste recycling mechanism according to claim 6, characterized in that, A slider (45) is fixedly connected to the side of the sliding door (15) near the housing (3). A sliding groove (46) is provided on the outside of the housing (3) to slide horizontally with the slider (45). A drive groove (47) communicating with the mounting cavity (36) is provided on the outside of the housing (3). A drive rack (48) corresponding to the drive groove (47) is fixedly connected to one side of the sliding door (15). The drive rack (48) meshes with the drive gear (44) for transmission. A push-pull handle (11) is mounted on the outside of the sliding door (15).

8. A door panel laser edge-sealing device with a waste recycling mechanism according to claim 7, characterized in that, The sliding door (15) is detachably connected to an annular sliding sealing strip on the side facing the inspection port (14); the partition (5) has a sliding sealing ring embedded in its outer peripheral sidewall.

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