Production line for producing steel coil packaging foamed sheet by recycling plastic and foamed sheet thereof

Abstract

The invention provides a production line for producing a steel coil packaging foamed sheet by plastic recovery and a foamed sheet thereof, the production line comprises a plastic waste pretreatment device, a foaming extruder, a calendaring plate production device and a trimming device which are connected in sequence, the trimming device comprises a support and a suspended ceiling, the production line also comprises a lower clamping plate and an upper clamping plate, the lower clamping plate is fixed on the top of the support, and the upper clamping plate is fixed on the top of the support; the upper clamping plate is hoisted below the suspended ceiling and can ascend and descend, and the lower clamping plate and the upper clamping plate are used for pressing the stacked foaming plates; the perforating mechanism comprises a plurality of perforating rods fixedly installed at the bottom of the suspended ceiling and further comprises openings formed in the centers of the lower clamping plate and the upper clamping plate, and the perforating rods are used for forming a plurality of small holes in the periphery and the center of the foaming plate in a penetrating mode in the circumferential direction; and a trimming mechanism. The production line can synchronously complete the modification process of a plurality of foamed plates in a stacked state, can automatically push out waste materials, can also automatically polish the inner and outer round edges, can realize the automatic jet printing process after modification is completed, and is high in production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of foamed sheet processing, and in particular to a production line for making foamed sheets for steel coil packaging by plastic recycling and the foamed sheets thereof. Background Art

[0002] During the transportation of steel coils, due to their large self-weight, they are difficult to handle, and the transportation environment is difficult to guarantee. Since steel coils are made of steel, they are prone to corrosion when exposed to acid or water, and collisions are likely to occur during handling and rolling, resulting in deformation or damage of the steel coils. Steel coils have high value, and if not properly protected, it will cause great economic losses. Therefore, when steel coils produced by general manufacturers leave the factory, they are usually wrapped with circumferential guard plates, and such guard plates are divided into foamed sheets and solid plates.

[0003] The foamed sheets are generally made of high-strength and tough polyethylene material. At present, in order to meet the needs of energy conservation and emission reduction, some plastic waste and new materials are mixed as raw materials to foam and prepare foamed sheets. The production of foamed sheets requires steps such as raw material mixing, extrusion, calendering and sheet making, cutting and segmentation, modification operation, and circular sheet printing.

[0004] After the foamed sheets are formed, cut into square sheets and stacked, for the modification operation of the square foamed sheets, that is, the trimming process, the existing equipment can only complete the modification process of one sheet at a time, with slow efficiency. After being modified into circular sheets, it is necessary to manually polish the inner and outer circular edges, and the degree of automation and equipment integration is low. Summary of the Invention

[0005] In view of the above problems, the present invention provides a production line for making foamed sheets for steel coil packaging by plastic recycling and the foamed sheets thereof. This production line can synchronously complete the modification process of multiple stacked foamed sheets, can automatically push out waste materials, can also automatically polish the inner and outer circular edges, and can realize an automatic printing process after the modification is completed, with high production efficiency.

[0006] To solve the above problems, the technical solution adopted by the present invention is: ">A production line for making foamed sheets for steel coil packaging by plastic recycling, including a plastic waste pretreatment device, a foaming extruder, a calendering and sheet-making device, and a trimming device connected in sequence. The trimming device includes a bracket and a ceiling, and further includes: A lower clamping plate and an upper clamping plate. The lower clamping plate is fixed on the top of the bracket, and the upper clamping plate is hoisted below the ceiling and can be lifted and lowered. The lower clamping plate and the upper clamping plate are used to clamp the stacked foamed sheets; A perforating mechanism, including multiple perforating rods fixedly installed at the bottom of the ceiling, and further including openings formed at the centers of the lower clamping plate and the upper clamping plate. The multiple perforating rods are used to perforate a plurality of small holes in the periphery and the central circumference of the foamed sheets; The trimming mechanism includes multiple guide cylinders fixedly installed at the center and periphery of the bottom of the lower clamping plate. Electric heating wires are installed in the guide cylinders and can be lifted and lowered through corresponding multiple small holes in the foamed board. It also includes multiple rotating seats rotatably installed on the lower clamping plate, the upper clamping plate, and the circumferential side wall of the opening. The rotating seats are provided with jacks for the perforating rods or the electric heating wires to pass through. The rotating seats are used to drive the electric heating wires to rotate circumferentially to trim the outer circular edge and the central circular opening of the stacked foamed board. The waste pushing mechanism includes a push plate and a push ring installed below the ceiling. The push plate corresponds to the opening and is used to push out the central waste, and the push ring is used to push out the outer waste edge.

[0007] Preferably, a pair of first hydraulic cylinders are fixedly installed at the bottom of the ceiling, and the telescopic ends of the first hydraulic cylinders are fixedly connected to the top of the upper clamping plate.

[0008] Preferably, a pair of second hydraulic cylinders are fixedly installed at the top of the ceiling. The telescopic ends of the second hydraulic cylinders penetrate through the ceiling and are fixedly connected to a pressing plate. The upper ends of multiple perforating rods are all fixedly installed at the bottom of the pressing plate.

[0009] Preferably, the trimming mechanism further includes a driving component that can synchronously drive multiple inner and outer rotating seats to rotate synchronously. The driving component includes a pair of annular cavities arranged in the upper clamping plate and the lower clamping plate. An outer gear ring and an inner gear ring are respectively rotatably connected in the pair of annular cavities. Multiple outer rotating seats are all fixedly installed at the bottom of the outer gear ring, and multiple central rotating seats are all fixedly installed at the bottom of the inner gear ring. A transmission channel is provided between the pair of annular cavities. First motors are installed on both the upper clamping plate and the lower clamping plate. The output shafts of the first motors extend into the corresponding transmission channels and are fixed with first gears. The first gears are meshed with the outer gear ring and the inner gear ring. The seat surfaces of the rotating seats are flush with the clamping surfaces of the upper clamping plate and the lower clamping plate.

[0010] Preferably, a pair of first cylinders are fixedly installed at the bottom of the lower clamping plate. The telescopic ends of the first cylinders are fixedly installed with a pulling plate. Two pairs of electromagnetic suction heads are fixedly installed on the pulling plate. The two pairs of electromagnetic suction heads respectively extend into the bottoms of the corresponding guide cylinders and are used to magnetically attract the electric heating wires and pull them into the guide cylinders.

[0011] Preferably, both the upper and lower ends of the electric heating wire are connected with power connection heads. Magnetic rings are embedded at both ends of the power connection heads. Conductive rings matched with the power connection heads are installed in the jacks. Magnetic blocks matched with the magnetic rings are embedded at both ends of the jacks. Power connection rings of an external power supply are fixed in both the upper clamping plate and the lower clamping plate. Conductive heads electrically connected to the conductive rings are embedded on the rotating seats. The conductive heads are in contact with the power connection rings.

[0012] Preferably, a first electric push rod is fixedly installed at the bottom of the ceiling. The telescopic end of the first electric push rod penetrates through the ceiling and is fixed with a connecting plate. A resisting rod penetrating through the ceiling is fixed to the bottom of the connecting plate. The lower end of the resisting rod is fixed to a pushing plate. Second electric push rods are fixedly installed on both sides of the bottom of the ceiling, and the telescopic ends of the second electric push rods are fixedly connected to pushing rings.

[0013] Preferably, a rotary cylinder is installed on the right side of the ceiling. The rotary end of the rotary cylinder is fixed with a second cylinder. The telescopic end of the second cylinder is fixed with a grasping disc. A plurality of negative pressure suction cups are circumferentially installed at the bottom of the grasping disc. A printing device is installed in the middle of the grasping disc. A conveyor belt machine is installed on the right side of the bracket.

[0014] Preferably, a grinding brush roller is sleeved on the resisting rod. Grinding brush rows arranged vertically are fixed to both sides of the pushing ring. A transmission assembly capable of synchronously driving the grinding brush roller to rotate and the grinding brush rows to rotate circumferentially is installed on the ceiling.

[0015] Preferably, the transmission assembly includes a second motor fixedly installed on the connecting plate. The output end of the second motor is fixed to the upper end of the resisting rod. A transmission cavity is arranged inside the ceiling. A pair of belt pulleys are rotatably connected in the transmission cavity. A belt is sleeved between the pair of belt pulleys. Limiting edges are fixed to both sides of the resisting rod. A limiting port for the limiting edges to pass through is arranged on the inner belt pulley. A rotating shaft extending to the bottom of the ceiling is fixed to the outer belt pulley. A second gear is fixed to the end of the rotating shaft. A gear ring meshing with the second gear is rotatably connected to the bottom of the ceiling. The upper ends of the two second electric push rods are both fixed to the bottom of the gear ring.

[0016] The present invention also provides a foamed board, which is obtained by using the production line for manufacturing the foamed board for steel coil packaging by recycling plastics as described above.

[0017] The beneficial effects of the present invention are as follows: 1. By installing a plastic waste pretreatment device, a foaming extruder, a calendering plate-making device and a trimming device, the plastic waste pretreatment can remove impurities and crush the plastic waste, then add new materials for mixing, send them into the foaming extruder for melting and plasticizing, then calender the board through the calendering plate-making device, cut out the boards one by one through the trimming mechanism on the device, send the stacked boards into the trimming device to complete the synchronous trimming process, and recycle the trimming waste into the plastic waste pretreatment device, which can save energy and reduce emissions, reduce costs and be more environmentally friendly.

[0018] 2. By installing the upper and lower splints, the perforation mechanism and the trimming mechanism, the stacked square foam sheets are fed onto the lower splint, the first hydraulic cylinder is started to drive the upper splint down, and the stacked foam sheets are clamped in conjunction with the lower splint. The upper and lower pairs of rotary seats clamp the area of the foam sheet to be perforated, and the second hydraulic cylinder is started to drive the plate down, thereby driving the inner and outer perforation rods to descend, pass through the corresponding jacks on the rotary seats, and pierce multiple small holes on the inner and outer sides of the foam sheet as the entry holes for the heating wire, and also as transition holes in the electric heating wire rotary cutting process to avoid continuous operation of the electric heating wire. To solve the problem of uneven temperature and edge jamming caused by uneven temperature, start the first cylinder, and drive multiple electromagnetic suction heads to move up through the pulling plate, and then push the heating wire out of the guide cylinder, pass through the corresponding jack and small hole, and the electric heads at both ends of the heating wire contact the conductive ring in the jack, and the magnetic block magnetically attracts the magnetic ring, thereby fixing the heating wire, and starting the first motor, and driving the outer gear ring and the inner gear ring to rotate through the first gear, driving the internal and external rotary seats to rotate, and then driving the heating wire to rotate, and the electric ring and the conductive head power the heating wire, thereby realizing the trimming process of multiple foam boards in a stacked state, and high production efficiency.

[0019] 3. By installing the waste ejection mechanism, when the wafer reforming process is completed, it is only necessary to start the first electric push rod, which drives the push rod to move down through the connecting plate, and then drives the push plate to move down, through the upper opening, and push the trimmed center waste out of the lower opening. Start a pair of second electric push rods to drive the push ring to descend and push out the outer waste edges.

[0020] 4. By installing the grinding brush roller, grinding brush row and transmission assembly, when the waste pushing process is completed, the grinding brush roller on the push rod enters the central circular opening, and the grinding brush rows on both sides drop to the side of the circular foam board. The second motor is started to drive the push rod to rotate. Under the action of the limiting edge, the inner pulley is driven to rotate, and the outer pulley is driven to rotate synchronously through the belt, and then the grinding brush row is driven to rotate through the second gear and the ring gear. The push rod drives the grinding brush roller to rotate, thereby realizing the synchronous grinding process of the inner and outer circular edges, with a high degree of automation and improved product quality.

[0021] 5. By installing the grabbing plate and printing equipment, when the modification operation is completed, the upper clamping plate rises, the rotating cylinder and the second cylinder are started, and the grabbing plate is driven to rotate to the topmost wafer. The circumferential edge of the wafer is adsorbed by multiple negative pressure suction cups, and it is grabbed from top to bottom. After grabbing, the printing equipment prints on the surface of the wafer, and after printing, it is transferred to the conveyor belt for release, completing the automated printing process. The equipment has a high degree of integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A top perspective view of the present invention; Figure 2 A bottom perspective view of the present invention; Figure 3Cross-sectional view of the present invention; Figure 4 is Figure 3 Schematic enlarged view of the structure at position A in Figure 5 Stereogram of the upper clamping plate proposed by the present invention; Figure 6 Bottom view of the upper clamping plate proposed by the present invention; Figure 7 Stereogram of the perforating mechanism proposed by the present invention; Figure 8 Cross-sectional view of the guiding cylinder proposed by the present invention; Figure 9 Stereogram of the heating wire proposed by the present invention; Figure 10 Schematic diagram of the structure of the second embodiment of the present invention.

[0023] In the figure: 1 support, 2 lower clamping plate, 3 upper clamping plate, 4 pull plate, 5 electromagnetic chuck, 6 guiding cylinder, 7 first motor, 8 first cylinder, 9 conveyor belt, 10 printing equipment, 11 grasping disc, 12 negative pressure suction cup, 13 pushing ring, 14 pushing plate, 15 second electric push rod, 16 perforating rod, 17 ceiling, 18 abutting disc, 19 first hydraulic cylinder, 20 second hydraulic cylinder, 21 first electric push rod, 22 abutting rod, 23 foaming board, 24 rotating cylinder, 25 second cylinder, 26 outer gear ring, 27 first gear, 28 rotating base, 29 jack, 30 slip ring, 31 magnetic block, 32 conductive ring, 33 annular cavity, 34 heating wire, 35 electrical connection head, 36 magnetic ring, 37 opening, 38 inner gear ring, 39 second motor, 40 transmission cavity, 41 belt, 42 belt pulley, 43 second gear, 44 gear ring, 45 grinding brush row, 46 grinding brush roller, 47 limiting edge. Detailed implementation manners

[0024] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementations disclosed below.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manners. Example 1

[0026] Reference Figures 1-9 , a production line for making foamed plates for steel coil packaging by recycling plastics, which includes a plastic waste pretreatment device, a foaming extruder, a calendering plate-making device, and a trimming device connected in sequence. The plastic waste pretreatment can remove impurities and crush the plastic waste, then add new materials for mixing, send it into the foaming extruder for melting and plasticizing, then calender the plates through the calendering plate-making device, cut out pieces of plates through the trimming mechanism on the device, send the stacked plates into the trimming device to complete the synchronous trimming process, and recycle the trimming waste into the plastic waste pretreatment device again, saving energy, reducing emissions, reducing costs, and being more environmentally friendly.

[0027] The trimming device includes a bracket 1 and a ceiling 17, and further includes: a lower clamping plate 2 and an upper clamping plate 3. The lower clamping plate 2 is fixed to the top of the bracket 1, and the upper clamping plate 3 is hoisted below the ceiling 17 and can be lifted and lowered. A pair of first hydraulic cylinders 19 are fixedly installed at the bottom of the ceiling 17, and the telescopic ends of the first hydraulic cylinders 19 are fixedly connected to the top of the upper clamping plate 3. The lower clamping plate 2 and the upper clamping plate 3 are used to clamp the stacked foamed plates 23.

[0028] The perforating mechanism includes multiple perforating rods 16 fixedly installed at the bottom of the ceiling 17, and further includes openings 37 opened at the centers of the lower clamping plate 2 and the upper clamping plate 3. The multiple perforating rods 16 are used to pierce a plurality of small holes in the periphery and the circumferential direction of the center of the foamed plate 23. A pair of second hydraulic cylinders 20 are fixedly installed at the top of the ceiling 17, and the telescopic ends of the second hydraulic cylinders 20 penetrate through the ceiling 17 and are fixedly connected to a pressing plate 18. The upper ends of the multiple perforating rods 16 are all fixedly installed at the bottom of the pressing plate 18. Starting the second hydraulic cylinder 20 drives the pressing plate 18 to descend, and then drives the multiple inner and outer perforating rods 16 to descend, pass through the insertion holes 29 on the corresponding rotary seats 28, and pierce a plurality of small holes on the inner and outer sides of the foamed plate 23, which serve as the entry holes for the heating wire 34 and also as the transition holes during the rotary cutting process of the heating wire 34, avoiding the situation of uneven temperature and edge jamming caused by the continuous operation of the heating wire 34.

[0029] The trimming mechanism includes multiple guide cylinders 6 fixedly installed at the center and the periphery of the bottom of the lower clamping plate 2. Heating wires 34 that can be lifted and lowered through corresponding small holes on the foamed plate 23 are installed inside the guide cylinders 6. It further includes multiple rotary seats 28 rotatably installed on the circumferential side walls of the lower clamping plate 2, the upper clamping plate 3, and the opening 37. Insertion holes 29 for the perforating rods 16 or the heating wires 34 to pass through are opened on the rotary seats 28. The rotary seats 28 are used to drive the heating wires 34 to rotate circumferentially to trim the outer circular edge and the central circular opening of the stacked foamed plates 23.

[0030] Further, the trimming mechanism further includes a driving component that can synchronously drive a plurality of inner and outer rotating seats 28 to rotate synchronously. The driving component includes a pair of annular cavities 33 provided in the upper clamping plate 3 and the lower clamping plate 2. An outer gear ring 26 and an inner gear ring 38 are respectively rotatably connected in the pair of annular cavities 33. A plurality of outer peripheral rotating seats 28 are fixedly installed at the bottom of the outer gear ring 26, and a plurality of central rotating seats 28 are fixedly installed at the bottom of the inner gear ring 38. A transmission channel is provided between the pair of annular cavities 33. A first motor 7 is installed on both the upper clamping plate 3 and the lower clamping plate 2. The output shaft of the first motor 7 extends into the corresponding transmission channel and is fixed with a first gear 27. The first gear 27 meshes with the outer gear ring 26 and the inner gear ring 38. The seat surface of the rotating seat 28 is flush with the clamping surface of the upper clamping plate 3 and the lower clamping plate 2. When the first motor 7 is started, the outer gear ring 26 and the inner gear ring 38 are driven to rotate by the first gear 27, driving a plurality of inner and outer rotating seats 28 to rotate, and then driving the heating wire 34 to rotate. The power supply ring 30 and the conducting head supply power to the heating wire 34, realizing the reforming process of multiple foamed plates in a stacked state, with high production efficiency.

[0031] Further, a pair of first cylinders 8 are fixedly installed at the bottom of the lower clamping plate 2. The telescopic end of the first cylinder 8 is fixedly installed with a pulling plate 4. Two pairs of electromagnetic suction heads 5 are fixedly installed on the pulling plate 4. The two pairs of electromagnetic suction heads 5 respectively extend into the bottom of the corresponding guiding cylinder 6, and are used for magnetically attracting the heating wire 34 and pulling it into the guiding cylinder 6.

[0032] Specifically, electrical connection heads 35 are connected to both the upper and lower ends of the heating wire 34. Magnetic rings 36 are embedded at both ends of the electrical connection head 35. A conductive ring 32 that cooperates with the electrical connection head 35 is installed in the jack 29. Magnetic blocks 31 that cooperate with the magnetic rings 36 are embedded at both ends of the jack 29. Power supply rings 30 connected to an external power supply are fixed in both the upper clamping plate 3 and the lower clamping plate 2. Conductive heads electrically connected to the conductive ring 32 are embedded in the rotating seat 28. The conductive heads abut against the power supply ring 30. The electrical connection heads 35 at both ends of the heating wire 34 contact the conductive ring 32 in the jack 29, and the magnetic blocks 31 magnetically attract the magnetic rings 36, thereby fixing the heating wire 34. After the reforming is completed, the electromagnetic suction heads 5 pull the heating wire 34 back into the guiding cylinder 6.

[0033] The waste pushing mechanism includes a push plate 14 and a push ring 13 installed below the ceiling 17. The push plate 14 corresponds to the opening 37 and is used to push out the central waste. The push ring 13 is used to push out the peripheral waste edges. A first electric push rod 21 is fixedly installed at the bottom of the ceiling 17. The telescopic end of the first electric push rod 21 passes through the ceiling 17 and is fixed with a connecting plate. The bottom of the connecting plate is fixed with a push rod 22 that passes through the ceiling 17. The lower end of the push rod 22 is fixed to the push plate 14. Second electric push rods 15 are fixed on both sides of the bottom of the ceiling 17. The telescopic end of the second electric push rod 15 is fixedly connected to the push ring 13. Start the first electric push rod 21, and drive the push rod 22 to move downward through the connecting plate, thereby driving the push plate 14 to move downward, pass through the upper opening 37, and push out the trimmed central waste from the lower opening 37. Start a pair of second electric push rods 15, and drive the push ring 13 to descend, and push out the peripheral waste edges.

[0034] In addition, a rotating cylinder 24 is installed on the right side of the ceiling 17, and a second cylinder 25 is fixed to the rotating end of the rotating cylinder 24, and a grabbing plate 11 is fixed to the telescopic end of the second cylinder 25. A plurality of negative pressure suction cups 12 are installed circumferentially on the bottom of the grabbing plate 11, and a printing device 10 is installed in the middle of the grabbing plate 11. A conveyor belt machine 9 is installed on the right side of the bracket 1. The rotating cylinder 24 and the second cylinder 25 are started to drive the grabbing plate 11 to rotate to the topmost wafer, and the circumferential edge of the wafer is adsorbed by the plurality of negative pressure suction cups 12, and it is grabbed from top to bottom in sequence. After grabbing, the printing device 10 prints on the surface of the wafer, and after printing, it is transferred to the conveyor belt machine 9 for release, completing the automated printing process.

[0035] The stacked square foam sheets are fed onto the lower clamping plate 2, and the first hydraulic cylinder 19 is started to drive the upper clamping plate 3 to descend, and cooperate with the lower clamping plate 2 to clamp the stacked foam sheets 23. The upper and lower pairs of rotary seats 28 clamp the areas of the foam sheets 23 to be perforated. The second hydraulic cylinder 20 is started to drive the plate 18 to descend, and then drive the inner and outer perforating rods 16 to descend, pass through the corresponding sockets 29 on the rotary seats 28, and pierce multiple small holes on the inner and outer sides of the foam sheets 23 as entry holes for the heating wire 34, and also as transition holes in the peeling process of the heating wire 34, to avoid the uneven temperature and edge jamming caused by the continuous operation of the heating wire 34. The first cylinder 8 is started, The pulling plate 4 drives the multiple electromagnetic suction heads 5 to move upward, and then the heating wire 34 is pushed out of the guide cylinder 6, passing through the corresponding jack 29 and the small hole, and the electric heads 35 at both ends of the heating wire 34 contact the conductive ring 32 in the jack 29, and the magnetic block 31 magnetically attracts the magnetic ring 36, thereby fixing the heating wire 34, and starting the first motor 7. The outer gear ring 26 and the inner gear ring 38 are driven to rotate through the first gear 27, and the multiple inner and outer rotary seats 28 are driven to rotate, and then the heating wire 34 is driven to rotate. The electric ring 30 and the conductive head supply power to the heating wire 34, and the heating wire 34 is hot-melted and cut, thereby realizing the transformation process of multiple foamed boards in a stacked state, with high production efficiency.

[0036] After being cut into discs, the plurality of electromagnetic suction heads 5 rise, magnetically attract the heating wire 34 and pull it back into the guide tube 6 for next use.

[0037] When the wafer reforming process is completed, it is only necessary to start the first electric push rod 21, which drives the push rod 22 downward through the connecting plate, and then drives the push plate 14 downward, passes through the upper opening 37, and pushes the trimmed center waste out of the lower opening 37. Then, start a pair of second electric push rods 15 to drive the push ring 13 to descend and push out the outer waste edges.

[0038] When the modification operation is completed, the upper clamping plate 3 rises, and the rotating cylinder 24 and the second cylinder 25 are started to drive the grabbing plate 11 to rotate to the topmost wafer. The circumferential edge of the wafer is adsorbed by multiple negative pressure suction cups 12, and it is grabbed from top to bottom in sequence. After grabbing, the printing device 10 prints on the surface of the wafer, and after printing, it is transferred to the conveyor belt machine 9 for release, completing the automated printing process with high equipment integration. Example 2

[0039] Reference Figure 10 The difference between this embodiment and the first embodiment is that a grinding brush roller 46 is provided on the push rod 22, and a vertically arranged grinding brush row 45 is fixed on both sides of the push ring 13. A transmission assembly that can synchronously drive the grinding brush roller 46 to rotate and the grinding brush row 45 to rotate circumferentially is installed on the ceiling 17. The transmission assembly includes a second motor 39 fixedly mounted on the connecting plate, the output end of the second motor 39 is fixed to the upper end of the push rod 22, a transmission chamber 40 is provided in the ceiling 17, and a pair of pulleys 42 are rotatably connected in the transmission chamber 40. A belt 41 is sleeved between the pair of pulleys 42, and limiting edges 47 are fixed on both sides of the push rod 22. A limiting opening for the limiting edge 47 to pass through is provided on the inner pulley 42, and a rotating shaft extending to the bottom of the ceiling 17 is fixed on the outer pulley 42. A second gear 43 is fixed on the end of the rotating shaft. The bottom of the ceiling 17 is rotatably connected to a gear ring 44 that meshes with the second gear 43, and the upper ends of the two second electric push rods 15 are fixed to the bottom of the gear ring 44.

[0040] When the waste pushing process is completed, the grinding brush roller 46 mounted on the push rod 22 enters the central circular opening, and the grinding brush rows 45 on both sides drop to the side of the circular foam plate. The second motor 39 is started to drive the push rod 22 to rotate. Under the action of the limiting edge 47, the inner pulley 42 is driven to rotate, and the outer pulley 42 is driven to rotate synchronously through the belt 41, and then the grinding brush row 45 is driven to rotate through the second gear 43 and the ring gear 44, and the push rod 22 drives the grinding brush roller 46 to rotate, thereby realizing the synchronous grinding process of the inner and outer circular edges, with a high degree of automation and improved product quality.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A production line for making foamed plates for steel coil packaging from plastic recycling, characterized in that, It includes a plastic waste pretreatment device, a foaming extruder, a calendering plate-making device, and a trimming device connected in sequence. The trimming device includes a bracket (1) and a ceiling (17), and further includes: A lower clamping plate (2) and an upper clamping plate (3). The lower clamping plate (2) is fixed to the top of the bracket (1), and the upper clamping plate (3) is hoisted below the ceiling (17) and can be lifted. The lower clamping plate (2) and the upper clamping plate (3) are used to clamp the stacked foamed plates (23); A perforating mechanism, including multiple perforating rods (16) fixedly installed at the bottom of the ceiling (17), and further including openings (37) opened at the centers of the lower clamping plate (2) and the upper clamping plate (3). The multiple perforating rods (16) are used to perforate a plurality of small holes in the periphery and the central circumferential direction of the foamed plate (23); A trimming mechanism, including multiple guide cylinders (6) fixedly installed at the center and the periphery of the bottom of the lower clamping plate (2). Electric heating wires (34) that can be lifted and pass through corresponding multiple small holes in the foamed plate (23) are installed in the guide cylinders (6). It also includes multiple rotating seats (28) rotatably installed on the circumferential side walls of the lower clamping plate (2), the upper clamping plate (3), and the opening (37). A jack (29) for the perforating rod (16) or the electric heating wire (34) to pass through is opened on the rotating seat (28). The rotating seat (28) is used to drive the electric heating wire (34) to rotate circumferentially to trim the outer circular edge and the central circular opening of the stacked foamed plates (23); A waste material pushing mechanism, including a push plate (14) and a push ring (13) installed below the ceiling (17). The push plate (14) corresponds to the opening (37) and is used to push out the central waste material, and the push ring (13) is used to push out the outer waste edge.

2. The production line for making foamed plates for steel coil packaging by plastic recycling according to claim 1, wherein A pair of first hydraulic cylinders (19) are fixedly installed at the bottom of the ceiling (17), and the telescopic ends of the first hydraulic cylinders (19) are fixedly connected to the top of the upper clamping plate (3).

3. The production line for making foamed sheets for steel coil packaging by plastic recycling according to claim 1, characterized in that, A pair of second hydraulic cylinders (20) are fixedly installed at the top of the ceiling (17). The telescopic ends of the second hydraulic cylinders (20) penetrate the ceiling (17) and are fixedly connected to a pressing plate (18). The upper ends of the multiple perforating rods (16) are all fixedly installed at the bottom of the pressing plate (18).

4. The production line for making foamed plates for steel coil packaging by plastic recycling according to claim 1, characterized in that, The trimming mechanism further includes a driving component that can drive multiple inner and outer rotating seats (28) to rotate synchronously. The driving component includes a pair of annular cavities (33) arranged in the upper clamping plate (3) and the lower clamping plate (2). An outer gear ring (26) and an inner gear ring (38) are respectively rotatably connected in the pair of annular cavities (33). Multiple outer rotating seats (28) are all fixedly installed at the bottom of the outer gear ring (26), and multiple inner rotating seats (28) are all fixedly installed at the bottom of the inner gear ring (38). A transmission channel is provided between the pair of annular cavities (33). First motors (7) are installed on both the upper clamping plate (3) and the lower clamping plate (2). The output shafts of the first motors (7) extend into the corresponding transmission channels and are fixed with first gears (27). The first gears (27) are meshed with the outer gear ring (26) and the inner gear ring (38). The seat surface of the rotating seat (28) is flush with the clamping surfaces of the upper clamping plate (3) and the lower clamping plate (2).

5. The production line for making foamed plates for steel coil packaging by plastic recycling according to claim 1, characterized in that, A pair of first cylinders (8) are fixedly installed at the bottom of the lower clamping plate (2). A pull plate (4) is fixedly installed at the telescopic end of the first cylinder (8). Two pairs of electromagnetic suction heads (5) are fixedly installed on the pull plate (4). The two pairs of electromagnetic suction heads (5) respectively extend into the bottom inside of the corresponding guide cylinders (6) for magnetically attracting the heating wire (34) and pulling it into the guide cylinders (6).

6. The production line for making foamed plates for steel coil packaging by plastic recycling according to claim 1, characterized in that, Power connection heads (35) are connected to both the upper and lower ends of the heating wire (34). Magnetic rings (36) are embedded at both ends of the power connection head (35). A conductive ring (32) cooperating with the power connection head (35) is installed in the jack (29). Magnetic blocks (31) cooperating with the magnetic rings (36) are embedded at both ends of the jack (29). Power connection rings (30) of an external power supply are fixedly installed in both the upper clamping plate (3) and the lower clamping plate (2). A conductive head electrically connected to the conductive ring (32) is embedded in the rotary base (28), and the conductive head abuts against the power connection ring (30).

7. The production line for making steel coil packaging foamed plates by plastic recycling according to claim 1, wherein, A first electric push rod (21) is fixedly installed at the bottom of the suspended ceiling (17). The telescopic end of the first electric push rod (21) penetrates through the suspended ceiling (17) and is fixed with a connecting plate. A pressing rod (22) penetrating through the suspended ceiling (17) is fixed to the bottom of the connecting plate. The lower end of the pressing rod (22) is fixed to the push plate (14). Second electric push rods (15) are fixedly installed on both sides of the bottom of the suspended ceiling (17). The telescopic ends of the second electric push rods (15) are fixedly connected to the push rings (13).

8. The production line for manufacturing the foamed board for steel coil packaging by plastic recycling according to claim 1, wherein, A rotary cylinder (24) is installed on the right side of the suspended ceiling (17). A second cylinder (25) is fixed to the rotary end of the rotary cylinder (24). A grasping disc (11) is fixed to the telescopic end of the second cylinder (25). A plurality of negative pressure suction cups (12) are circumferentially installed at the bottom of the grasping disc (11). A printing device (10) is installed in the middle of the grasping disc (11). A conveyor belt machine (9) is installed on the right side of the bracket (1).

9. The production line for making foamed plates for steel coil packaging by plastic recycling according to claim 7, wherein, A grinding brush roller (46) is sleeved on the pressing rod (22). Vertical grinding brush rows (45) are fixed to both sides of the push ring (13). A transmission assembly for synchronously driving the rotation of the grinding brush roller (46) and the circumferential rotation of the grinding brush rows (45) is installed on the suspended ceiling (17). The transmission assembly includes a second motor (39) fixedly installed on the connecting plate. The output end of the second motor (39) is fixed to the upper end of the pressing rod (22). A transmission cavity (40) is provided inside the suspended ceiling (17). A pair of belt pulleys (42) are rotatably connected in the transmission cavity (40). A belt (41) is sleeved between the pair of belt pulleys (42). Limiting edges (47) are fixed to both sides of the pressing rod (22). A limiting port for the limiting edges (47) to pass through is provided on the inner belt pulley (42). A rotating shaft extending to the bottom of the suspended ceiling (17) is fixed to the outer belt pulley (42). A second gear (43) is fixed to the end of the rotating shaft. A gear ring (44) meshing with the second gear (43) is rotatably connected to the bottom of the suspended ceiling (17). The upper ends of the two second electric push rods (15) are both fixed to the bottom of the gear ring (44).

10. A foamed board, characterized in that, It is produced by using the production line for making foamed plates for steel coil packaging from recycled plastics according to any one of claims 1-9.

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