Film winding device

Abstract

The utility model relates to the technical field of packaging equipment, in particular to a covering film winding device which comprises a side film winding unit and a roller way conveying unit and further comprises a gantry stand column and a top film covering unit, the roller way unit comprises a top film covering conveying roller way and a side film winding conveying roller way, and the gantry stand column stretches across the top film covering conveying roller way. The top film covering unit is connected with the gantry stand column through the first lifting unit and moves up and down along the gantry stand column through the first lifting unit. The side film winding unit is arranged on one side of the side film winding conveying roller way and comprises a supporting stand column and a side film releasing mechanism, the top of the supporting stand column is connected with a rotating arm through a driving module, the side film releasing mechanism is arranged at one end of the rotating beam, and the driving module drives the rotating arm to rotate so that the side film releasing mechanism can rotate around stacked materials to conduct film covering. According to the utility model, top film-side film winding of stacked materials can be completed, the stacked materials are prevented from being scattered in the film laminating process, and the packaging strength of cargo winding is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a film covering and winding device. Background Art

[0002] A film covering and winding machine (winding packaging machine) is widely used in the containerization cost of products such as transportation, food, chemical industry, mechanical and electrical products. It covers a film on the surface of materials, which can prevent the goods from being damaged during handling and play roles such as dust prevention and moisture prevention. Especially on the conveyor line, in order to ensure the overall integrity of the palletized materials on the conveyor line, it is necessary to wind and wrap the film on its surface so that the palletized materials are kept stable and consistent in the vertical height direction, and the palletized materials wrapped with the film as a whole are convenient for subsequent transfer and handling.

[0003] In the traditional film covering and winding, the winding machine is installed on one side bracket, and the palletized materials move to the turntable along with the conveyor belt. The turntable rotates to drive the palletized materials to rotate, so as to realize the winding and wrapping of the film on the palletized materials by the winding machine. However, in the traditional film covering and winding method, since the palletized materials move with the turntable, the palletized materials are easy to be thrown out during the rotation process, and this form of film covering and winding can only wrap the film around the palletized materials and cannot cover the top of the palletized materials, and the top of the palletized materials is exposed and easy to be damaged. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a film covering and winding device to achieve the technical effect of being able to cover the top of the palletized materials with a film and avoiding the materials being thrown out during the film covering process.

[0005] To achieve this technical purpose, the utility model adopts the following scheme:

[0006] A film covering and winding device includes a side film winding unit and a roller conveyor unit. The side film winding unit is located on one side of the roller conveyor unit, and also includes a gantry column and a top film covering unit. The roller conveyor unit includes a top film covering conveyor roller and a side film winding conveyor roller. The gantry column straddles the top film covering conveyor roller. The top film covering unit is connected to the gantry column through a lifting unit one, and the top film covering unit moves up and down along the gantry column through the lifting unit one;

[0007] The side film winding unit is placed on one side of the side film winding conveyor roller. The side film winding unit includes a support column and a side film releasing mechanism. The top of the support column is connected with a rotating arm through a driving module. The side film releasing mechanism is placed at one end of the rotating beam. The driving module drives the rotating arm to rotate so that the side film releasing mechanism rotates around the palletized materials to cover the film.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0009] The utility model first coats the top of the stacked materials with film through the top film covering unit; covers the top of the stacked materials with the top film covering unit to prevent the top materials from being damaged; then the stacked materials covered with the top film are transmitted forward along the roller conveying unit, and the stacked materials are coated with film all around by the side film winding unit, and the end of the top film is pressed inside the side film when the side film is wound to prevent the top film from being loosely pressed; the side film winding unit rotates around the stacked materials to prevent the stacked materials from being thrown out and scattered due to rotation during the coating process, thereby enhancing the film wrapping packaging strength of the goods and also having the effect of rain and moisture protection.

[0010] Further, the preferred solution adopted by the utility model is:

[0011] The top film covering unit includes a hanger and side plates placed at both ends of the hanger, a supporting roller, a driving roller and a driven roller are respectively arranged between the two side plates, and a driving motor 3 is arranged outside one side plate, and the driving motor 3 is controlled in conjunction with the top film covering conveying roller; the output end of the driving motor 3 is connected to the driving roller; the top film roll is placed on the two supporting rollers, and the top film passes between the driving roller and the driven roller;

[0012] The side plates at both ends of the hanger are respectively provided with tensioning modules one at the two ends corresponding to the driven rollers, and the tensioning modules provide a pressing force to the driven rollers to make the driven rollers fit with the active rollers.

[0013] A top film hot melt unit is arranged between the two side panels, and the top film hot melt unit includes a driving cylinder 1, a rotating rod and a top film hot melt wire. The rotating rod is placed between the two side panels and is rotatably connected to the two side panels respectively. Both ends of the rotating rod extend to the outside of the side panels and are connected to the swing arms outside the side panels. The swing arms are hinged to the driving cylinder 1 on the side panels, and both ends of the top film hot melt wire are fixedly connected to the two ends of the rotating rod through insulating connectors.

[0014] A cantilever beam is arranged on the top of the supporting column, and the driving module is placed at the end of the cantilever beam; a guide beam is arranged at one end of the rotating arm, and the guide beam is connected to the side film release mechanism through the lifting unit 2; a counterweight block is arranged at the other end of the rotating arm.

[0015] The side film winding mechanism includes a film stretching machine, which has a speed regulating power unit. The speed regulating power unit is linked to a driving module at the end of the cantilever beam. The speed regulating power unit is connected to the front and rear film-drawing rollers through a chain. The speed difference between the front and rear film-drawing rollers is ensured by a two-stage sprocket. A force sensor is provided on the shell of the film stretching machine. A film-drawing roller is rotatably installed at the film-drawing end of the film stretching machine. The force sensor detects the force change of the film roller and feeds back to the speed regulating power unit for speed fine-tuning.

[0016] On one side of the support column, there is an installation base. On the installation base, there is a swing arm frame. One end of the swing arm frame is hinged to the installation base. The position of the swing arm frame close to the hinged end is connected to the second driving cylinder on the installation base. At the end of the swing arm frame far from the installation base, there is a side film thermal fusing and pressing unit arranged vertically.

[0017] The side film thermal fusing and pressing unit includes an installation frame, side film hot melt wires, and a rubber pressing plate. The side film hot melt wires and the rubber pressing plate are respectively installed on the installation frame. The side film hot melt wires are used for fusing the side film, and the rubber pressing plate is used for sticking and pressing the end of the fused side film on the outside of the palletized materials.

[0018] Between the column and the roller conveyor unit, there is also a film clamping unit. The film clamping unit is located below the winding side film where the side film release mechanism is connected to the palletized materials. The film clamping unit includes an adjusting column and a film clamping module. The film clamping module is placed on the top of the adjusting column, and the film clamping module is used for clamping the wound side film.

[0019] The film clamping module includes an installation platform, a movable clamping plate, and a third driving cylinder. The installation platform is placed on the top of the adjusting column. Inside the installation platform, there is a fixed shaft. Sleeve bushes are respectively arranged on the fixed shaft. The sleeve bushes are respectively and hingedly connected to the third driving cylinder. And each movable clamping plate is fixed to the sleeve bush where it is located. The two movable clamping plates rotate relatively under the action of the third driving cylinder to control the opening and closing actions of the movable clamping plates. Description of the Drawings

[0020] Figure 1 is the structural schematic diagram of the present utility model;

[0021] Figure 2 is the structural schematic diagram of the top film covering unit in the present utility model;

[0022] Figure 3 is Figure 2 the enlarged view of part A;

[0023] Figure 4 is the installation structural schematic diagram of the driven roller;

[0024] Figure 5 is the structural schematic diagram of the side film winding unit in the present utility model;

[0025] Figure 6 is the installation structural schematic diagram of the side film release mechanism;

[0026] Figure 7 is the structural schematic diagram of the side film hot melt wires and the pressing plate;

[0027] Figure 8 is the structural schematic diagram of the film clamping unit;

[0028] Figure 9 is the structural schematic diagram of the film clamping module;

[0029] Figure 10 Schematic structural diagram of the splint

[0030] Figure 11 Schematic structural diagram of the side film release structure

[0031] Figure 12 For Figure 11 Top view

[0032] Figure 13 For Figure 11 Bottom view

[0033] The markings in the figure are: 1. Support column; 2. Roller conveyor unit; 201. Top film covering conveyor roller; 202. Side film winding conveyor roller; 3. Gantry column

[0034] 4. Side film winding unit; 401. Rotating arm; 402. Side film release mechanism; 403. Guide beam; 404. Counterweight two; 405. Rack; 406. Driving motor four; 407. Linear slide rail

[0035] 5. Top film covering unit; 501. Hanger; 502. Side plate; 503. Material supporting roller; 504. Driving roller; 505. Driven roller; 506. Annular retaining ring; 507. Transmission sprocket two; 508. Transmission chain

[0036] 6. Film clamping unit; 601. Adjusting column; 602. Installation platform; 603. Movable splint; 604. Driving cylinder three; 605. Fixed shaft; 606. Bush; 607. Slot; 608. Insert block; 609. Movable arm

[0037] 7. Lifting unit one; 701. Driving motor two; 702. Transmission shaft; 703. Sprocket; 704. Lifting chain

[0038] 8. Top film roll; 9. Driving motor three; 10. Mounting plate; 11. Pin shaft; 12. Connecting pin; 13. Positioning pin one; 14. Fixed seat one; 15. Bolt one; 16. Spring one; 17. Nut one; 18. Hook

[0039] 19. Top film hot melting unit; 1901. Driving cylinder one; 1902. Swing arm; 1903. Rotating rod; 1904. Top film hot melting wire

[0040] 20. Orbit; 21. Roller; 22. Cantilever beam; 23. Driving motor 1; 24. Mounting seat; 25. Swing arm frame; 26. Side film hot melt wire; 27. Rubber pressing plate; 28. Driving cylinder 2; 29. Mounting frame; 30. Connecting plate; 31. Rotating shaft; 32. Fixed seat 2; 33. Spring 2; 34. Bolt 2; 35. Nut 2; 36. Positioning pin 2; 37. Extrusion head; 38. Force measuring sensor; 39. Film outlet roller; 40. Front film pulling roller; 41. Rear film pulling roller; 42. Speed regulating motor. Detailed implementation mode

[0041] To fully understand the purpose, features and effects of the present utility model, through the following specific implementation modes, as Figures 1 to 9 shown, the present utility model will be described in detail, but the present utility model is not limited thereto.

[0042] As Figure 1 shown, a film covering and winding device is composed of a support column 1, a roller conveyor unit 2, a gantry column 3, a side film winding unit 4 and a top film covering unit 5. In this embodiment, there are two groups of roller conveyor units 2, one group is a top film covering conveyor roller path 201, and the other group is a side film winding conveyor roller path 202.

[0043] As Figures 2 to 4 shown, the gantry column 3 straddles the top film covering conveyor roller path 201. A lifting unit 1 7 is provided at the top of the gantry column 3. The lifting unit 1 7 is composed of a driving motor 2 701 and a transmission shaft 702. The driving motor 2 701 is installed at the top of the gantry column 3. The output end of the driving motor 2 701 is connected to the transmission shaft 702 through a speed reducer. Sprockets 703 are respectively installed at both ends of the transmission shaft 702. Lifting chains 704 are respectively provided on each sprocket 703. One end of the lifting chain 704 is placed inside the gantry column 3 and a counterweight 1 is fixedly connected to the end thereof; the other end of the lifting chain 704 is connected to the top film covering unit 5. The driving motor 2 701 drives the sprocket 703 to rotate through the transmission shaft 702, and by controlling the forward and reverse rotation of the driving motor 2 701, the lifting chain 704 drives the top film covering unit 5 to lift.

[0044] The top film covering unit 5 is placed above the top film covering conveyor roller path 201. The top film covering unit 5 is composed of a hanger 501 and L-shaped side plates 502 placed at both ends of the hanger 501. A material supporting roller 503, a driving roller 504, a driven roller 505 and a top film hot melt unit 19 are respectively arranged between the two side plates 502. The top film roll 8 is placed on the material supporting roller 503, and the top film end of the top film roll 8 passes through between the driving roller 504 and the driven roller 505.

[0045] Specifically, there are two material supporting rollers 503 arranged in parallel, and annular retaining rings 506 are sleeved on both ends of each material supporting roller 503. The top film roll 8 is placed between the annular retaining rings 506 at both ends of the material supporting roller 503, and the annular retaining rings 506 play a limiting role on both ends of the top film roll 8.

[0046] A third driving motor 9 is installed on the side plate 502 at one end of the hanger 501. The third driving motor 9 is linked with the motor of the top film covering conveying roller path 201 through a controller. A first driving sprocket is installed at the output end of the third driving motor 9. A second driving sprocket 507 is installed at the end of the driving roller 504 corresponding to the side where the third driving motor 9 is located. The first driving sprocket is connected with the second driving sprocket 507 through a driving chain 508. When the third driving motor 9 rotates, the driving roller 504 is driven to rotate through the driving chain 508, and the top film is released.

[0047] In this embodiment, mounting plates 10 are respectively arranged on the outer sides of each side plate 502. The mounting plates 10 are rotationally connected to the corresponding side plates 502 through pins 11. Both ends of the driven roller 505 are respectively rotationally connected to the mounting plates 10 on their corresponding sides. Tightening modules one are respectively arranged outside each side plate. The tightening modules one provide a pressing force to the driven roller to make the driven roller fit with the driving roller.

[0048] The tightening module one is composed of a hook 18 and a first spring 16. A first positioning pin 13 and a first fixing seat 14 are respectively arranged at the positions below the mounting plates 10 on each side plate 502. The first positioning pin 13 is hinged to one end of the hook 18, and the other end of the hook 18 is clamped with a connecting pin 12 fixedly connected to the lower end of the mounting plate 10. A through hole is formed in the first fixing seat 14, and a first bolt 15 is arranged in the through hole. The top of the first bolt 15 is connected to the lower end of the first spring 16, and the upper end of the first spring 16 is connected to the bottom of the hook 18. A first nut 17 is threadedly connected to the first bolt 15. The first nut 17 is placed below the first fixing seat 14. The length of the first bolt 15 extending upward from the first fixing seat 14 is adjusted through the first nut 17 to adjust the tension of the first spring 16, and further adjust the pressing degree of the driven roller 505 on the driving roller 504, so as to ensure the distance between the driven roller 505 and the driving roller 504, and make the driven roller 505 press the top film tightly.

[0049] The top film hot melting unit 19 is composed of a driving cylinder 1901, a rotating rod 1903 and a top film hot melting wire 1904. The rotating rod 1903 is placed between two side plates 502 and is rotatably connected to the side plates 502 respectively. The two ends of the rotating rod 1903 extend outwards to the outside of the side plates 502, and the extended ends of the rotating rod 1903 are fixedly connected to one ends of swing arms 1902 outside the side plates 502. The other ends of the swing arms 1902 are hinged to the telescopic ends of the driving cylinders 1901 fixed outside the side plates 502. The two ends of the top film hot melting wire 1904 are fixedly connected to the two ends of the rotating rod 1903 through insulating connectors. The driving cylinders 1901 outside the two side plates 502 are driven simultaneously, so that their telescopic ends pull the swing arms 1902 to drive the rotating rod 1903 to rotate, and then the top film hot melting wire 1904 rotates to fuse the top film.

[0050] On the opposite side walls of the two vertical rods of the gantry column 3, tracks 20 are respectively arranged. At the two ends of the top of the hanging frame 501, rollers 21 adapted to the tracks 20 are respectively arranged corresponding to the tracks 20 for assisting the lifting of the hanging frame 501.

[0051] As Figure 5 As shown in the figure, the side film winding unit 4 is composed of a support column 1, a rotating arm 401 and a side film releasing mechanism 402. The support column 1 is placed on one side of the side film winding and conveying roller path 202. A cantilever beam 22 is fixedly connected to the top of the support column 1 in the horizontal direction. A driving module is installed at the hanging end of the cantilever beam 22. In this embodiment, the driving module is a driving motor 23. The driving motor 23 is fixedly installed at the end of the cantilever beam 22. The output end of the driving motor 23 is connected to the rotating arm 401 through a slewing bearing, and the rotation center of the rotating arm 401 is located on the center line of the side film winding and conveying roller path 202. The driving motor 23 drives the rotating arm 401 to rotate in both forward and reverse directions.

[0052] One end of the rotating arm 401 is fixedly connected vertically with a guiding beam 403. The guiding beam 403 is connected to the side film releasing mechanism 402 through a lifting unit 2.

[0053] In this embodiment, in order to ensure the balanced force at both ends of the rotating arm 401, a counterweight 404 is installed at the other end of the rotating arm 401.

[0054] The lifting unit 2 is composed of a transmission gear (not marked due to the perspective problem of the attached drawing) and a rack 405. The rack 405 is fixedly connected to the side wall of the guiding beam 403. A driving motor 406 is fixedly installed on the housing of the side film releasing mechanism 402. A transmission gear is installed at the output end of the driving motor 406. The transmission gear meshes with the rack 405. The driving motor 406 drives the transmission gear to rotate, and the transmission gear meshes with the rack 405 to lift the side film releasing mechanism 402.

[0055] In this embodiment, two linear slide rails 407 are fixedly installed on the side wall of the guiding beam 403. A slider adapted to the linear slide rail 407 is installed on the housing of the side film releasing mechanism 402. The side film releasing mechanism 402 slides on the linear slide rail 407 through the cooperation of the slider and the linear slide rail 407.

[0056] The side film winding mechanism 402 includes a film stretching machine. The film stretching machine has a speed regulating power unit. The speed regulating power unit is linked with the driving module at the end of the cantilever beam 22. The speed regulating power unit is connected to the front and rear film pulling rollers through a sprocket chain drive. The speed difference between the front and rear film pulling rollers is ensured by two-stage sprockets. A force measuring sensor 38 is arranged on the housing of the film stretching machine. A film outlet roller 39 is rotatably installed at the film outlet end of the film stretching machine. The force measuring sensor 38 detects the force change of the film outlet roller 39 and feeds it back to the speed regulating power unit for speed fine-tuning. Specifically:

[0057] The side film winding mechanism 402 is a film stretching machine. The speed regulating power unit of the film stretching machine is a speed regulating motor 42. The speed regulating motor 42 is linked with the first driving motor 23. A front film pulling roller 40 and a rear film pulling roller 41 are arranged inside the film stretching machine. The output end of the speed regulating motor 42 is connected to the front film pulling roller 40 through a sprocket chain drive (as Figure 12 ), the front film pulling roller 40 is connected to the rear film pulling roller 41 through a sprocket chain drive. The difference in the diameters of the two-stage sprockets between the front film pulling roller 40 and the rear film pulling roller 41 forms a speed difference (as Figure 13 shown).

[0058] A film outlet roller 39 is arranged at the film outlet end of the film stretching machine. Connecting plates 30 are respectively installed at both ends of the film outlet roller 39. Each connecting plate 30 is respectively rotatably connected to the housing of the film stretching machine through a rotating shaft 31; one connecting plate 30 at one end of the film outlet roller 39 is connected to the film stretching machine through a second tensioning module. The second tensioning module is used for tensioning and resetting the film outlet roller 39.

[0059] The second tensioning module is composed of a second fixed seat 32 and a second spring 33. The second fixed seat 32 is fixedly installed on the housing of the film stretching machine. A through hole is opened on the second fixed seat 32. A second bolt 34 is arranged in the through hole. One end of the second bolt 34 is connected to a second nut 35. The second nut 35 is used for limiting the second bolt 34 and the second fixed seat 32; the other end of the second bolt 34 is connected to one end of the second spring 33. The other end of the second spring 33 is connected to a second positioning pin 36 on the connecting plate 30 on the side where the second tensioning module is located; by rotating the second nut 35, the length of the second bolt 34 extending out of the second fixed seat 32 is adjusted, thereby adjusting the pulling force of the second spring 33 on the film outlet roller 39.

[0060] A connecting plate 30 at the other end of the film outlet roller 39 is fixedly installed with an extrusion head 37. A force measuring sensor 38 is installed at the position of the housing of the film stretching machine corresponding to the extrusion head 37, and the force measuring sensor 38 is linked with the speed regulating motor. The probe of the force measuring sensor 38 contacts the extrusion head 37. When the film outlet roller 39 rotates under force, the extrusion head 37 will rotate accordingly to squeeze the probe of the force measuring sensor 38. The probe of the force measuring sensor 38 is squeezed to form a force signal, and the speed regulating motor 42 adjusts its speed according to the signal fed back by the force measuring sensor.

[0061] Due to the different soft and hard degrees of the outer packaging of the palletized materials, there may be differences in the tension of the film during the winding process. When the tension of the film is too large during the winding process, the film may break. When the tension of the film is insufficient, the film may be wound too loosely. In this embodiment, the speed regulating motor 42 adjusts its speed according to the force change of the film outlet roller 39 collected by the force measuring sensor 38 to adjust the film feeding speed of the film stretching machine. At the same time, the film stretching machine is linked with the first driving motor 23, and the first driving motor 23 also adjusts its rotation speed according to the speed of the film stretching machine, thereby adjusting the tension of the film.

[0062] As Figure 6 、 Figure 7 As shown in the figure, a mounting seat 24 is fixedly connected to one side of the support column 1. A swing arm frame 25 is arranged on the mounting seat 24, and one end of the swing arm frame 25 is hinged to the mounting seat 24; a second driving cylinder 28 is installed at the bottom of the mounting seat 24 near the hinged end of the swing arm frame 25, and the telescopic end of the second driving cylinder 28 is hinged to the bottom of the swing arm frame 25. A side film thermal fusing and pressing unit is also installed at the end of the swing arm frame 25 away from the mounting seat 24.

[0063] The side film thermal fusing and pressing unit is composed of a side film hot melt wire 26 and a rubber pressing plate 27. The side film hot melt wire 26 and the rubber pressing plate 27 are respectively installed on the mounting frame 29. When the telescopic end of the second driving cylinder 28 extends, it drives the swing arm frame 25 to rotate, so that the side film hot melt wire 26 contacts the side film and cuts the side film; then the swing arm frame 25 continues to rotate, and the rubber pressing plate 27 rotates with the swing arm frame 25 to contact the palletized materials. The rubber pressing plate 27 presses the end of the side film on the side film on the surface of the palletized materials to make it fit better and prevent the end of the side film from slipping off the palletized materials after being cut.

[0064] In this embodiment, the swing arm frame 25 can be set as a telescopic structure, and the length of the swing arm frame 25 can be adjusted according to the position of the palletized materials to ensure that the side film can be smoothly fused and the rubber pressing plate 27 can press the end of the side film on the side film on the surface of the palletized materials.

[0065] As Figure 1 、 Figures 8 to 10As shown in the figure, a film clamping unit 6 is further provided between the support column 1 and the side film winding and conveying roller path 202. The film clamping unit 6 is located below the winding side film where the side film releasing mechanism 402 is connected to the palletized materials.

[0066] The film clamping unit 6 is composed of an adjusting column 601 and a film clamping module. The height of the film clamping module can be adjusted through the adjusting column 601. The adjusting column 601 in this embodiment is a conventional structure and can be completed through conventional structures such as telescopic sleeves and cylinders.

[0067] The film clamping module is composed of an installation platform 602, clamping plates 603, and driving cylinder three 604. The installation platform 602 is placed on the top of the adjusting column 601. Two fixed shafts 605 are arranged in parallel inside the installation platform 602. Bushings 606 with movable arms 609 are respectively sleeved on each fixed shaft 605. The two ends of the bushing 606 are respectively rotatably connected to the fixed shaft 605 where it is located; two driving cylinder threes 604 are arranged inside the installation platform 602. The telescopic ends of each driving cylinder three 604 are respectively hinged to the bushing 606 through the movable arm 609 in a one-to-one correspondence; an active clamping plate 603 is respectively installed at one end of each bushing 606 close to the conveying table. Each active clamping plate 603 is fixed to the bushing 606 where it is located. The two active clamping plates 603 rotate relative to each other under the action of the driving cylinder three 604 to achieve the effect of opening and closing of the two active clamping plates 603.

[0068] In this embodiment, in order to ensure that the two active clamping plates 603 stably clamp the end of the side mold, a slot 607 - plug 608 structure is respectively arranged on the opposite sides of the two clamping plates 603. That is, a slot 607 is opened along the height direction on the side of one active clamping plate 603, and a plug 608 adapted to the slot 607 is arranged on the side of the other active clamping plate 603. When the side film is placed between the two active clamping plates 603, the side mold is clamped through the cooperation of the slot 607 and the plug 608.

[0069] When this film covering and winding device is working, the specific working process is as follows:

[0070] S1. According to the height of the palletized materials, start the lifting unit one 7 and adjust the overall height of the top film covering unit 5 to ensure that the top film covering unit 5 is at a certain distance above the top of the palletized materials to avoid contact between the two.

[0071] S2. Then start the driving motor three 9. The driving motor three 9 drives the driving roller 504 to rotate and release the top film. When releasing the top film, the end of the top film is lower than or equal to half of the height of the palletized materials.

[0072] S3. The palletized material is transported from the previous process to below the gantry column 3 through the top film covering conveyor roller path 201. At this time, the photoelectric sensor on the gantry column 3 detects the palletized material, and the driving motor three 9 starts to release the top film at a constant speed. At the same time, the palletized material is transported forward at a constant speed along with the top film covering conveyor roller path 201. The palletized material is covered on the top of the palletized material through the friction force between the top film and the top and side surfaces of the palletized material until the rear end of the palletized material completely passes below the gantry column 3, and at this time the photoelectric sensor cannot detect the palletized material. After a certain delay, the driving motor three 9 stops, and the top film covering conveyor roller path 201 stops transporting. At this time, the driving cylinder one 1901 drives its telescopic end to pull the rotating rod 1903 to rotate, so that the top film hot melt wire 1904 contacts the top film and cuts it off.

[0073] S4. After the top film is cut off, the end of the cut top film falls on the rear end of the palletized material, and the top film covering conveyor roller path restarts. The palletized material continues to be transported forward along with the top film covering conveyor roller path 201;

[0074] S5. The palletized material is completely transported to the side film winding conveyor roller path 202 along with the top film covering conveyor roller path 201. The side film winding conveyor roller path 202 stops transporting. After ensuring that the end of the side film is clamped in the film clamping module, the driving motor one 23 drives the rotating arm 401 to rotate counterclockwise to start winding the side film. After the side film releasing mechanism 402 rotates one week, two driving cylinders three 604 are started. The driving cylinders three 604 drive the respective corresponding bushings 606 to rotate in the opposite direction, thereby causing the two clamping plates 603 to open; the side film releasing mechanism 402 completes the process of winding from bottom to top and then from top to bottom through the drive of the lifting unit two. After the side film releasing mechanism 402 finishes winding, it stops at the rear end of the palletized material. At the same time, the driving cylinders three 604 drive the respective corresponding bushings 606 to rotate towards each other, so that the two clamping plates 603 clamp the side film.

[0075] S6. Start the driving cylinder two 28. The telescopic end of the driving cylinder two 28 pushes the swing arm frame 25 towards the side film. When the side film hot melt wire 26 contacts the side film, the side film is cut off. At the same time, the driving cylinder two 28 continues to push the swing arm frame 25, so that the end of the rubber pressing plate 27 contacts the palletized material, pressing the side film end on the side film on the surface of the palletized material to prevent the side film from slipping, and the film covering is completed.

[0076] S7. Start the side film winding conveyor roller path 202 to continue transporting the palletized material with the film covering completed forward.

[0077] Finally, it should be noted that the above-listed are only the preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and its equivalent technologies, they should all be considered within the protection scope of the present invention.

Claims

1. A film covering and winding device, comprising a side film winding unit and a roller conveyor unit, the side film winding unit being located on one side of the roller conveyor unit, characterized in that: It further includes a gantry column and a top film covering unit. The roller path unit includes a top film covering conveyor roller path and a side film winding conveyor roller path. The gantry column straddles the top film covering conveyor roller path. The top film covering unit is connected to the gantry column through a first lifting unit and moves up and down along the gantry column through the first lifting unit. The side film winding unit is placed on one side of the side film winding conveyor roller path. The side film winding unit includes a support column and a side film releasing mechanism. The top of the support column is connected with a rotating arm through a driving module. The side film releasing mechanism is placed at one end of the rotating beam. The driving module drives the rotating arm to rotate so that the side film releasing mechanism rotates around the palletized material to cover the film.

2. The film covering and winding device according to claim 1, wherein: The top film covering unit includes a hanging frame and side plates placed at both ends of the hanging frame. A material supporting roller, a driving roller and a driven roller are respectively arranged between the two side plates. And a third driving motor is arranged outside one side plate. The third driving motor is in interlock control with the top film covering conveyor roller path. The output end of the third driving motor is connected with the driving roller. The top film roll is placed on the two material supporting rollers. The top film passes through between the driving roller and the driven roller. Tightening modules one are respectively arranged at both ends of the side plates at both ends of the hanging frame corresponding to both ends of the driven roller. The tightening modules one provide a pressing force for the driven roller to make the driven roller fit with the driving roller.

3. The film-covered winding device according to claim 2, characterized in that: A top film hot melting unit is arranged between the two side plates. The top film hot melting unit includes a first driving cylinder, a rotating rod and a top film hot melting wire. The rotating rod is placed between the two side plates and is respectively rotatably connected with the two side plates. Both ends of the rotating rod extend to the outside of the side plates and are connected with swing arms outside the side plates. The swing arms are hinged with the first driving cylinder on the side plates. Both ends of the top film hot melting wire are fixedly connected with both ends of the rotating rod through insulating connectors.

4. The film-covered winding device according to claim 1, wherein: A cantilever beam is arranged at the top of the support column. The driving module is placed at the end of the cantilever beam. A guiding beam is arranged at one end of the rotating arm. The guiding beam is connected with the side film releasing mechanism through a second lifting unit. A counterweight is arranged at the other end of the rotating arm.

5. The film-coated winding device according to claim 1, wherein: The side film winding mechanism includes a film stretching machine. The film stretching machine has a speed regulating power unit. The speed regulating power unit is linked with the driving module at the end of the cantilever beam. The speed regulating power unit is connected with the front and rear film pulling rollers through a chain. The speed difference between the front and rear film pulling rollers is ensured by two-stage sprockets. A force measuring sensor is arranged on the shell of the film stretching machine. An outlet film roller is rotatably installed at the film outlet end of the film stretching machine. The force measuring sensor detects the force change of the outlet film roller and feeds it back to the speed regulating power unit for speed fine tuning.

6. The film covering and winding device according to claim 4, characterized in that: An installation seat is arranged on one side of the support column. A swing arm frame is arranged on the installation seat. One end of the swing arm frame is hinged with the installation seat. The position of the swing arm frame close to the hinged end is connected with a second driving cylinder on the installation seat. A side film hot fusing and pressing unit is vertically arranged at the end of the swing arm frame far away from the installation seat.

7. The film-covered winding device according to claim 6, characterized in that: The side film hot fusing and pressing unit includes an installation frame, a side film hot melting wire and a rubber pressing plate. The side film hot melting wire and the rubber pressing plate are respectively installed on the installation frame. The side film hot melting wire is used for fusing the side film. The rubber pressing plate is used for sticking and pressing the end of the fused side film on the outside of the palletized material.

8. The film covering and winding device according to claim 1, characterized in that: A film clamping unit is further arranged between the column and the roller path conveying unit. The film clamping unit is located below the winding side film where the side film releasing mechanism is connected with the palletized material. The film clamping unit includes an adjusting column and a film clamping module. The film clamping module is placed at the top of the adjusting column. The film clamping module is used for clamping the winding side film.

9. The film-coated winding device according to claim 8, wherein: The diaphragm clamping module includes an installation platform, movable clamping plates, and a driving cylinder III. The installation platform is placed on the top of the adjustment column. A fixed shaft is arranged inside the installation platform, and bushings are respectively arranged on the fixed shaft. The bushings are hinged to the driving cylinder III in a one-to-one correspondence, and each movable clamping plate is fixed to the bushing where it is located. The two movable clamping plates rotate relatively under the action of the driving cylinder III to control the opening and closing actions of the movable clamping plates.

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