Tire sealing film packaging machine capable of improving sealing film attractiveness

Abstract

The invention relates to the technical field of tire production and processing, in particular to a tire sealing film packaging machine capable of improving sealing film attractiveness. According to the tire sealing film packaging machine, the rack is arranged below the thermal shrinkage station and meshed with the gear on the first positioning shaft, so that a tire can automatically rotate for at least one circle in the thermal shrinkage process, and it is guaranteed that all parts of the surface of the tire are evenly heated. The problem that the tire side wall and the tire tread are heated unevenly due to a traditional fixing mode is effectively solved, and the shrinkage uniformity and the attaching effect of the heat shrinkage film are remarkably improved. Due to the fact that the tire can rotate in the thermal shrinkage station, the thermal shrinkage film can be more evenly attached to the surface of the tire, and wrinkles and irregular shapes on the appearance are eliminated. And the final film sealing structure is smoother and more attractive, and the overall packaging quality and market competitiveness of the product are improved.

Description

Technical Field

[0001] The invention relates to the technical field of tire production and processing, and in particular to a tire film sealing and packaging machine with improved film sealing aesthetics. Background Art

[0002] Tires are circular elastic rubber products that roll on the ground and are installed on various vehicles or machines. They are usually installed on metal rims, can support the vehicle body, buffer external impacts, achieve contact with the road surface and ensure the driving performance of the vehicle. Tires are often used under complex and harsh conditions. They are subjected to various deformations, loads, forces, and high and low temperature effects when driving, so they must have high load-bearing performance, traction performance, and buffering performance. At the same time, they are also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation. When tires are produced, they need to be transported to various places for sale or use. In order to ensure the safety of tires during transportation and avoid friction, the tires will be packaged.

[0003] At present, film sealing and packaging of tires are usually carried out manually or by packaging machines, and most of them are subjected to hot-melt treatment after packaging. At the current stage, the tires are fixed and flattened on the packaging machines, and then conveyed to the hot-melt mechanism for the hot-melt step, so that the outer film of the packaging is tightly attached to the surface of the tire.

[0004] The Chinese invention previously applied by the applicant (publication number: CN118405309A, publication date: 2024-07-30) discloses a tire film sealing packaging machine. The packaging machine includes a body and a film feeding mechanism, a hot melt film cutting mechanism, a tire conveying mechanism and a heat shrinking mechanism arranged on the body; one end of the body is set as an input end, and the other end is set as an output end; the film feeding mechanism includes an upper film feeding unit and a lower film feeding unit; the hot melt film cutting mechanism includes an upper film cutting unit and a lower rubber pad unit; the tire conveying mechanism includes a fixing unit and a transmission unit; the heat shrinking mechanism includes a heat shrinking shell, a heating unit and a plastic sealing unit; wherein the hot melt film cutting mechanism has at least two states, state one is to wrap the heat shrink film circumferentially on the tire tread, and state two is to cut the heat shrink film that wraps the tire. Through this film sealing packaging machine, the heat shrink film can be attached to the tire surface more conveniently and quickly. The patented tire is fixed when entering the heat shrink film, and the wind in the sealing machine blows at a fixed angle. As a result, uneven heating will occur when the outer film on the sidewall shrinks, resulting in poor actual use of the outer film after the tire is sealed and an unsightly packaging structure. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a tire film sealing packaging machine with improved film aesthetics. The tire film sealing packaging machine effectively avoids the problem of uneven heating of the sidewall and tread caused by the Chinese invention (publication number: CN118405309A, publication date: 2024-07-30), and significantly improves the shrinkage uniformity and fitting effect of the heat shrink film. Since the tire can rotate in the heat shrink station, the heat shrink film can be more evenly attached to the tire surface, thereby eliminating wrinkles and irregular shapes in appearance. The final film sealing structure is smoother and more beautiful, which improves the overall packaging quality and market competitiveness of the product.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: A tire film sealing and packaging machine with improved film sealing aesthetics, the packaging machine comprises: a frame, a tire conveying mechanism, a film feeding mechanism, a hot melt film cutting mechanism and a heat shrinking mechanism; one end of the frame is set as an input end, and the other end is set as an output end; the tire conveying mechanism is arranged on the frame, connecting the input end and the output end, so that the tire is vertically conveyed from the input end to the output end; the heat shrinking mechanism is arranged on the frame, and the tire conveying mechanism runs through the heat shrinking mechanism; The tire conveying mechanism comprises two parallel conveying chains and a plurality of positioning shafts arranged between the two conveying chains, the two conveying chains are evenly provided with fixed plate frames, the fixed plate frames are provided with bearings, and the two ends of the positioning shafts are provided on the fixed plate frames through bearings; the two adjacent positioning shafts are respectively the first positioning shaft and the second positioning shaft, and a tire fixing position is formed between the first positioning shaft and the second positioning shaft; one end of the first positioning shaft is provided with a gear, and the end of the second positioning shaft is not provided with a gear; A heat shrink station is arranged inside the heat shrink mechanism, and a rack that can mesh with the gear is arranged on the frame below the heat shrink station along the two conveying chain directions; when the first positioning shaft passes through the heat shrink station, the gear and the rack mesh with each other, driving the first positioning shaft to rotate and driving the tire to rotate at least one circle on the heat shrink station.

[0007] Preferably, the tire conveying mechanism also includes a driving motor, an active roller, a passive roller and a transmission gear. The active roller and the passive roller are arranged horizontally on the frame and the arrangement direction is perpendicular to the conveying direction of the packaging machine. The transmission gear is installed on both ends of the active roller and the passive roller. The driving motor is arranged on the frame and is connected to the active roller through the transmission gear.

[0008] Preferably, a friction portion is provided on the first positioning shaft to increase the friction between the first positioning shaft and the tire.

[0009] Preferably, sliding tracks are arranged on the inner sides of the two conveying chains, and rollers are arranged on both sides of the positioning shaft, and the rollers are contact-arranged on the sliding tracks.

[0010] Preferably, the heat shrink mechanism comprises a heat preservation cavity and a hot blowing device, wherein the blowing port of the hot blowing device is arranged on the side wall of the heat preservation cavity, and the hot air is blown to the sidewall of the tire so that the heat shrink film shrinks and wraps on the sidewall.

[0011] Preferably, the hot air blowing device comprises a heat shrinkable shell and a heating and cooling component and a circulating fan component arranged on the heat shrinkable shell; the heat shrinkable shell is provided with a accommodating cavity and a vent, the accommodating cavity is arranged inside the heat shrinkable shell, and the vent is used to connect the insulation cavity and the accommodating cavity.

[0012] Preferably, the heating and cooling assembly comprises a heating tube and a cooling fan, the heating tube is provided in a plurality of groups and is evenly distributed in the accommodating cavity, and the cooling fan is mounted on the heat shrinkable shell and is located in the heat preservation cavity.

[0013] Preferably, the circulation fan assembly is provided with several groups and is evenly distributed on the top of the heat shrinkable shell. The circulation fan assembly includes a circulation fan, an asbestos cover and a centrifugal fan which are sequentially combined in upper and lower parts. The circulation fan assembly is clamped on the top of the heat shrinkable shell through the asbestos cover, and the centrifugal fan is connected to the insulation cavity.

[0014] Preferably, the hot air blowing device further comprises a high-temperature curtain, which is arranged on both ends of the heat shrinkable shell close to the input end and the output end, and the high-temperature curtain is provided with a plurality of slits.

[0015] In summary, the advantages of the present invention are as follows: Due to the adoption of the above-mentioned technical solution, the tire film sealing and packaging machine sets a rack under the heat shrink station, which meshes with the gear on the first positioning shaft, so that the tire can automatically rotate at least one circle during the heat shrink process, thereby ensuring that all parts of the tire surface are evenly heated. It effectively avoids the problem of uneven heating of the sidewall and tread caused by the traditional fixing method, and significantly improves the shrinkage uniformity and bonding effect of the heat shrink film. Since the tire can rotate in the heat shrink station, the heat shrink film can be more evenly attached to the tire surface, thereby eliminating wrinkles and irregular shapes on the appearance. The final sealing film structure is smoother and more beautiful, which improves the overall packaging quality and market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the packaging machine; Figure 2 This is a structural diagram of the entrance working platform; Figure 3 It is a structural schematic diagram of the film feeding unit; Figure 4 It is a structural schematic diagram of the downward film delivery unit; Figure 5 Schematic diagram of the structure of the upper hot-melt film cutting unit; Figure 6 It is a partial structural schematic diagram of the lower silicone seat unit; Figure 7 is a structural schematic diagram of a circulation fan assembly; Figure 8 It is a structural schematic diagram of a heating and cooling component; Fig. 9 It is a structural schematic diagram of the tire conveying mechanism; Fig.10 A simplified diagram of the structure of heat shrink film wrapped on the tire tread; Fig.11 It is a schematic diagram of the local structure between the first positioning shaft and the second positioning shaft and the conveying chain in the heat shrink station; Figure numerals: 1, fuselage body; 2, film feeding mechanism; 3, hot melt film cutting mechanism; 4, tire conveying mechanism; 5, heat shrink mechanism; 6, entrance working platform; 11, radial plate; 12, slot; 21, upper film feeding unit; 22, lower film feeding unit; 31, upper hot melt film cutting unit; 32, lower silicone seat unit; 42, conveying unit; 51, heat shrink shell; 52, heating and cooling assembly; 53, circulation fan assembly; 61, platform bracket; 62, platform plate; 63, guide seat; 64, guide rod; 201, upper film feeding motor; 202, upper film feeding active roller; 203, upper auxiliary roller; 204, upper film swing rod; 206, lower film feeding motor; 207, lower film feeding active roller; 208, lower auxiliary roller; 209, lower film swing rod; 211, film blocking ring; 212, first film winding roller; 213 , second film winding roller; 301, upper cylinder; 302, upper middle knife beam; 303, upper film cutting guide rod; 304, upper slider seat; 305, upper knife holder; 306, upper cutter; 307, heating element; 308, lower reinforcing plate; 309, silicone strip; 401, driving motor; 402, transmission chain; 403, active roller; 404, passive roller; 405, transmission gear; 406, first positioning Axis; 407, second positioning axis; 408, gear; 409, rack; 410, fixed plate frame; 411, friction part; 412, sliding track; 413, roller; 501, insulation cavity; 502, vent hole; 503, heating tube; 504, cooling fan; 505, circulating fan; 506, asbestos cover; 507, centrifugal fan; 508, high temperature curtain cloth; 509, slit. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0019] It should also be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0020] The specific implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 9 As shown, a tire film sealing and packaging machine with improved film sealing aesthetics comprises a packaging machine body 1, a film feeding mechanism 2, a hot-melt film cutting mechanism 3, a tire conveying mechanism 4 and a heat shrinking mechanism 5. The packaging machine combines the functions of film sticking, film cutting and film melting. By using the packaging machine to seal and package tires, the tires can be directly converted from a storage state to a transportable state, saving a lot of time.

[0022] Specifically, according to the shape of the body 1, its two ends are defined as an input end and an output end respectively, and the movement direction from the input end to the output end is the transportation direction of the packaging machine.

[0023] like Figures 1 to 9 As shown, the tire conveying mechanism 4 is arranged along the transport direction of the packaging machine, and includes a fixing unit for fixing the tire and a transmission unit 42 for transmitting the tire. The transmission unit 42 is installed on the body 1 and arranged along the input end and the output end of the body 1, and the transmission unit 42 is provided with a plurality of evenly distributed fixing units.

[0024] Specifically, the conveying unit 42 includes a driving motor 401, a conveying chain 402, an active roller 403, a passive roller 404 and a transmission gear 405; the active roller 403 and the passive roller 404 are horizontally arranged on the main body 1 and the arrangement direction is perpendicular to the conveying direction of the packaging machine, the transmission gear 405 is installed on both ends of the active roller 403 and the passive roller 404, and the driving motor 401 is arranged on the main body 1 and is connected to the active roller 403 through the transmission gear 405.

[0025] The fixing unit includes a plurality of first positioning shafts 406 and second positioning shafts 407; specifically, a fixing plate frame 410 is evenly arranged on the two conveying chains 402, a bearing is arranged in the fixing plate frame 410, and the two ends of the positioning shaft are arranged on the fixing plate frame 410 through the bearing, and a certain retention space is arranged between the first positioning shaft 406 and the second positioning shaft 407, so as to form a tire fixing position. By arranging the first positioning shaft 406, the second positioning shaft 407 and the retention space, the tire can be well mounted on the fixing unit, and it is also more convenient to subsequently apply film, cut film and melt film to the tire.

[0026] The length of the reserved space between the first positioning axis 406 and the second positioning axis 407 is smaller than the diameter of the tire, so as to ensure that the tire will not fall onto the fixing unit.

[0027] When the packaging machine needs to seal the tire, the tire needs to be placed on the tire conveying mechanism 4, and the tire is transported to other mechanisms through the tire conveying mechanism 4.

[0028] like Figures 1 to 4 As shown, the film feeding mechanism 2 includes an upper film feeding unit 21 and a lower film feeding unit 22. The upper film feeding unit 21 is arranged above the input end, and the lower film feeding unit 22 is arranged below the input end.

[0029] Specifically, the upper film feeding unit 21 includes an upper film feeding motor 201, an upper film feeding active roller 202, an upper auxiliary roller 203, an upper film swinging rod 204 and an upper micro switch. The upper film feeding motor 201 is installed on the top of the machine body 1, and the upper film feeding motor 201 is connected to the upper film feeding active roller 202 by transmission. The upper film feeding active roller 202 is transversely arranged on the machine body 1, and the arrangement direction is perpendicular to the conveying direction of the packaging machine. The upper auxiliary roller 203 is installed on the machine body 1 and transversely parallel to the upper film feeding active roller 202. The upper film swinging rod 204 is arranged below the upper film feeding active roller 202; an upper micro switch is arranged on one side of the machine body 1, and the upper micro switch is used to detect whether the upper film swinging rod 204 swings.

[0030] The lower film feeding unit 22 includes a lower film feeding motor 206, a lower film feeding active roller 207, a lower auxiliary roller 208, a lower film swinging rod 209 and a lower micro switch. The lower film feeding motor 206 is installed at the bottom of the machine body 1, and the lower film feeding motor 206 is connected to the lower film feeding active roller 207 by transmission. The lower film feeding active roller 207 is transversely arranged on the machine body 1, and the arrangement direction is perpendicular to the conveying direction of the packaging machine. The lower auxiliary roller 208 is installed on the machine body 1 and transversely parallel to the lower film feeding active roller 207. The lower film swinging rod 209 is arranged below the lower film feeding active roller 207; a lower micro switch is arranged on one side of the machine body 1, and the lower micro switch is used to detect whether the lower film swinging rod 209 swings.

[0031] Before starting the packaging machine, two heat shrinkable film (outer film) rolls need to be placed between the upper film feeding active roller 202 and the upper auxiliary roller 203, and between the lower film feeding active roller 207 and the lower auxiliary roller 208, respectively. In order to better fix the two film rolls, film retaining rings 211 are provided at both ends of the upper film feeding active roller 202 and the lower film feeding active roller 207. The film retaining rings 211 are provided to limit the fixed position to the left and right, and can only rotate.

[0032] The upper film feeding unit 21 further includes a first film winding roller 212 and a second film winding roller 213 which are arranged on the body 1 and used for winding the heat shrink film, and the first film winding roller 212 and the second film winding roller 213 are both located below the upper film feeding active roller 202. The specific effects of the first film winding roller 212 and the second film winding roller 213 will be described later.

[0033] like Figure 1 to Figure 2 As shown, in order to better ensure that the heat shrink film can perfectly wrap the tire, an inlet working platform 6 is also provided at the input end of the fuselage body 1, and the output port of the inlet working platform 6 is located at the middle position of the heat shrink film. The above-mentioned inlet working platform 6 includes a platform bracket 61, a platform plate 62, a guide seat 63 and a guide rod 64. The platform bracket 61 has two pieces and is relatively arranged at the top of the inlet of the input end of the fuselage body 1, and the two ends of the platform bracket 61 are respectively facing the input end and the output end. The platform plate 62 is installed on the top of the platform bracket 61, and the guide seat 63 has two pieces and is relatively fixed in the middle of the platform bracket 61. The opposite surfaces of the two guide seats 63 are provided with fixedly connected guide rods 64.

[0034] Combined with the above description, since the output port of the entrance working platform 6 is directly opposite to the middle of the heat shrink film, when the tire needs to be sealed and packaged, the tire only needs to be pushed vertically into the entrance working platform 6, and the crown of the tire will abut against the center of the heat shrink film. This setting can reduce the time for workers to place tires and improve work efficiency.

[0035] like Figures 1 to 6 As shown, the hot melt film cutting mechanism 3 is arranged above the tire conveying mechanism 4 with the upper and lower parts opened, and has at least two states; in state one, the hot melt film cutting mechanism 3 is opened at the upper and lower parts, and the tire conveying mechanism 4 vertically feeds the spliced ​​heat shrink film into the tire, and as the tire moves forward, the tire tread is circumferentially wrapped with the heat shrink film; in state two, the hot melt film cutting mechanism 3 is closed at the upper and lower parts, and the heat shrink films on the upper film feeding unit 21 and the lower film feeding unit 22 are respectively introduced into the hot melt film cutting mechanism 3, and the upper and lower heat shrink films are hot-melt spliced ​​on the hot melt film cutting mechanism 3, and the heat shrink film wrapped around the tire is cut off; Specifically, the hot melt film cutting mechanism 3 includes an upper hot melt film cutting unit 31 and a lower silicone seat unit 32; the upper hot melt film cutting unit 31 is installed above the input end and is located behind the upper film feeding unit 21, and the lower silicone seat unit 32 is installed below the input end and is located behind the lower film feeding unit 22, and the upper hot melt film cutting unit 31 and the lower silicone seat unit 32 are arranged to be separated from each other. When the upper hot melt film cutting unit 31 and the lower silicone seat unit 32 are respectively started, the two will abut against each other.

[0036] Specifically, the upper hot melt film cutting unit 31 includes an upper cylinder 301, an upper middle knife beam 302, an upper film cutting guide rod 303, an upper slider seat 304, an upper knife holder 305, an upper cutter 306 and a heating element 307; the upper film cutting guide rod 303 is provided with two groups and is vertically arranged on the left and right sides of the fuselage body 1, the upper slider seat 304 is slidably connected to the upper film cutting guide rod 303, the upper middle knife beam 302 is mounted on the upper slider seat 304 on the left and right sides, the upper cylinder 301 is arranged above the upper middle knife beam 302 and is transmission-connected to the upper middle knife beam 302, the upper knife holder 305 is arranged below the upper middle knife beam 302, and the upper cutter 306 and the heating element 307 are installed at the bottom of the upper knife holder 305, and the heating element 307 conducts heat to the upper cutter 306.

[0037] The lower silicone seat unit 32 includes a lower cylinder, a lower reinforcing plate 308, a lower film cutting guide rod, a lower slider seat and a silicone strip 309. The lower film cutting guide rod is provided with two groups and is vertically arranged on the left and right sides of the fuselage body 1. The lower slider seat is slidably connected to the lower film cutting guide rod. The lower reinforcing plate 308 is mounted on the lower slider seats on the left and right sides. The lower cylinder is arranged below the lower reinforcing plate 308 and is transmission-connected to the lower reinforcing plate 308. The silicone strip 309 is installed on the top surface of the lower reinforcing plate 308. The upper cutting knife 306 and the silicone strip 309 are located on the same vertical plane.

[0038] like Figures 1 to 8 As shown, the heat shrink mechanism 5 is arranged at the rear end of the hot melt film cutting mechanism 3, and the tire conveying mechanism 4 is arranged through the heat shrink mechanism 5. The heat shrink mechanism 5 includes a heat preservation cavity 501 and a hot blowing device. The blowing port of the hot blowing device is arranged on the side wall of the heat preservation cavity 501, and the hot air is blown to the sidewall of the tire, so that the heat shrink film shrinks and wraps on the sidewall.

[0039] The above-mentioned hot air blowing device includes a heat shrinkable shell 51, a heating and cooling component 52 and a circulation fan component 53; the heat shrinkable shell 51 is installed in the middle of the body 1, and the heating and cooling component 52 is arranged inside the heat shrinkable shell 51, and the circulation fan component 53 is arranged at the top of the heat shrinkable shell 51, and extends upward from the inside of the heat shrinkable shell 51 to the outside of the heat shrinkable shell 51.

[0040] Specifically, a heat-insulating cavity 501 is provided between the fuselage body 1 and the heat-shrinkable shell 51, and a receiving cavity and a vent 502 are provided on the heat-shrinkable shell 51. The receiving cavity is arranged inside the heat-shrinkable shell 51, and the vent 502 is used to connect the heat-insulating cavity 501 and the receiving cavity, so that the heating and cooling component 52 can better transfer the heat to the heat-insulating cavity 501 through the vent 502.

[0041] The heating and cooling assembly 52 includes a heating tube 503 and a cooling fan 504 . The heating tube 503 is provided in a plurality of groups and is evenly distributed in the accommodating cavity. The cooling fan 504 is installed on the heat shrinkable shell 51 and is located in the heat preservation cavity 501 .

[0042] The circulation fan assembly 53 is provided with several groups and is evenly distributed on the top of the heat shrinkable shell 51. The circulation fan assembly 53 includes a circulation fan 505, an asbestos cover 506 and a centrifugal fan 507 which are sequentially combined in upper and lower order. The circulation fan assembly 53 is clamped on the top of the heat shrinkable shell 51 through the asbestos cover 506, and the centrifugal fan 507 is connected to the insulation cavity 501.

[0043] like Figures 1 to 8 As shown, in order to better ensure that the heat shrink film can perfectly and firmly fit on the outer surface of the tire, a high-temperature curtain 508 is provided on the heat shrink shell 51. The high-temperature curtain 508 is installed on both ends of the heat shrink shell 51 close to the input end and the output end. By providing these two high-temperature curtains 508, the high-temperature hot air in the insulation cavity 501 is not easy to escape, which better ensures that the temperature in the insulation cavity 501 is within a relatively constant temperature range.

[0044] A plurality of slits 509 are provided on the high temperature cord fabric 508, and the slits 509 can facilitate the tire to enter and exit.

[0045] like Fig.11 As shown, in order to ensure that the heat shrink film can be heated more evenly in the heat shrink mechanism 5, it is necessary to ensure that at least one of the first positioning axis 406 and the second positioning axis 407 used to fix the tire can rotate and drive the tire to rotate at the same time.

[0046] Specifically, a gear 408 is provided at one end of the first positioning shaft 406, and a gear 408 is not provided at the end of the second positioning shaft 407; a heat shrink station is provided inside the heat shrink mechanism 5, and a rack 409 that can mesh with the gear 408 is provided on the frame 1 below the heat shrink station along the directions of the two conveying chains 402; when the first positioning shaft 406 passes through the heat shrink station, the gear 408 and the rack 409 mesh with each other, driving the first positioning shaft 406 to rotate and driving the tire to rotate at least one circle on the heat shrink station.

[0047] In order to ensure the structural stability of the tire when it rotates, a sliding track 412 is provided on the inner side of the two conveying chains 402 , and rollers 413 are provided on both sides of the two positioning shafts, respectively, and the rollers 413 are provided on the sliding track 412 in contact.

[0048] In order to increase the friction between the positioning shaft and the tire, a friction portion 411 is provided on the first positioning shaft 406. The second positioning shaft 407 may also be provided with a friction portion 411 at a position corresponding to the first positioning shaft 406.

[0049] When the tire enters the heat shrinking station of the heat shrinking mechanism 5 under the conveyance of the tire conveying mechanism 4, the gear 408 of the first positioning shaft 406 will mesh with the rack 409, and after meshing, the first positioning shaft 406 will rotate counterclockwise along the conveying direction of the packaging machine, and during the rotation process, the tire will be driven to rotate together. At this time, the heat shrink film is evenly heated under the action of the hot blowing device.

[0050] like Figures 1 to 10 As shown, combined with the above packaging machine, the specific packaging operation process is as follows: First, take out two heat shrink film rolls, place one between the upper film feed active roller 202 and the upper auxiliary roller 203 and limit it using the film retaining ring 211 on the upper film feed active roller 202, and place the other between the lower film feed active roller 207 and the lower auxiliary roller 208 and limit it using the film retaining ring 211 on the lower film feed active roller 207.

[0051] Then, the openings of the two film rolls are torn open and the heat shrink films are respectively wound on the upper film swing rod 204, the first film winding roller 212, the second film winding roller 213 and the lower film swing rod 209, and then the open ends of the two heat shrink films are placed in the middle of the hot melt film cutting mechanism 3, the upper film feeding motor 201 is started to drive the upper hot melt film cutting unit 31 to move downward and the lower film feeding motor 206 is started to drive the lower silicone seat unit 32 to move upward. When the upper cutter 306 and the silicone strip 309 abut against the heat shrink film, the heating element 307 will heat-melt the two heat shrink films together, and the excess part will be cut off by the upper cutter 306. After the cutting is completed, the hot melt film cutting mechanism 3 will be reset.

[0052] At this time, the tire can be vertically input from the entrance working platform 6, and when the tire passes through the guide seat 63 and the guide rod 64, it is exactly located at the center of the heat shrink film, and its crown abuts against the heat shrink film. Under the influence of potential energy, the tire will then fall on the first positioning shaft 406 and the second positioning shaft 407, and be vertically stuck in the retention space.

[0053] By starting the conveying unit 42, the tire moves one body position, and the upper film swing rod 204 and the lower film swing rod 209 are driven to swing at the same time. After the upper microswitch and the lower microswitch detect the swing of the film swing rod, they will drive the upper film feed motor 201 and the lower film feed motor 206 to start, and the heat shrink film will be transported out through the upper film feed active roller 202 and the lower film feed active roller 207.

[0054] When the upper and lower heat shrink films wrap the outer diameter of the tire during movement, the hot melt film cutting mechanism 3 is started again to cut off the wrapped heat shrink film, and the hot melt film cutting mechanism 3 is reset after the cutting is completed. (The above is controlled by setting other micro switches for induction) After wrapping the tire, the conveying unit 42 will convey the tire on the fixed unit into the heat shrinkable shell 51 of the heat shrinking mechanism 5, and completely adhere the heat shrinkable film to the tire surface through the heating and cooling component 52 and the circulating fan component 53. At this time, the heat shrinkable film wraps the crown, shoulder, sidewall and bead of the tire, and extends to the center to protrude the bead, and the protruding length is 1.0-6.0 cm.

[0055] After completion, the tire is transported out of the output end by the conveying unit 42. Since the fixing units are evenly spaced on the conveying unit 42, the tires to be packaged can be continuously sealed and packaged before the heat shrink film is used up.

[0056] A motor control cabinet may also be provided on the packaging machine, and various mechanisms on the packaging machine may be controlled by the motor control cabinet.

[0057] In order to prove that the tire film sealing packaging machine improves the uniformity and flatness of the film by rotating the tire during the heat shrink process, the present invention obtains the following comparative data through the following experiments: 1. Experimental Setup Experimental group: A tire film sealing and packaging machine with a rotating function was used, that is, a rack was set under the heat shrink station, which meshed with the gear on the first positioning shaft, so that the tire could automatically rotate at least one circle during the heat shrink process; 50 tires were produced.

[0058] Control group: Using the traditional Chinese invention (publication number: CN118405309A, publication date: 2024-07-30) film sealing packaging machine, without rotating the tires in the heat shrink station; producing 50 tires.

[0059] 2. Experimental indicators In order to verify the improvement effect of film sealing uniformity and flatness, the following experimental indicators are selected: 1) Film sealing uniformity coefficient: Use an infrared thermal imager to detect the thickness distribution of the heat shrink film and calculate the thickness variation coefficient (CV) of the heat shrink film on the tread and sidewall. The smaller the CV, the more uniform the film sealing.

[0060] 2) Appearance smoothness score: Three professional judges will score the tire sealing film based on its appearance smoothness (including wrinkles, uneven shrinkage, etc.) (1-10 points, the higher the score, the better the smoothness).

[0061] 3) Heat shrink film adhesion test: Use a peel strength tester to measure the adhesion of the tire sealing film on the tread and sidewall, expressed in N / cm. The higher the adhesion, the tighter the sealing film adheres to the tire surface.

[0062] 4) Film sealing aesthetics: Measure the appearance of the film sealing, including the flatness and wrinkle-freeness of the outer film, and give a comprehensive score.

[0063] 3. Experimental Data

[0064] 4. Experimental results analysis 1) Film sealing uniformity: The film sealing uniformity coefficient of the experimental group was 4.2%, which was 8.5 percentage points lower than that of the control group, which was 12.7%. This shows that the thickness distribution of the heat shrink film on the tread and sidewall is more uniform through the rotation of the tire.

[0065] 2) Appearance smoothness score: The score of the experimental group was 8.5, which was significantly higher than the 5.6 of the control group, indicating that the rotation function effectively reduced wrinkles and irregular shapes, making the sealing film smoother and more beautiful.

[0066] 3) Adhesion of heat shrink film: The adhesion of the experimental group was 6.8 N / cm, which was 2.5 N / cm higher than that of the control group (4.3 N / cm). This indicates that the rotation method helps the heat shrink film to adhere more closely to the tire surface and improves the adhesion effect of the sealing film.

[0067] 4) Film sealing aesthetics score: The experimental group scored 9.0 points, while the control group scored only 5.7 points, proving that rotation improves the aesthetics of the film sealing and meets the market's high-quality demand for product appearance.

[0068] 5. Conclusion Experimental data show that the tire film sealing and packaging machine, by setting a rack under the heat shrink station and engaging the gear on the positioning shaft, allows the tire to automatically rotate during the heat shrink process, which indeed improves the uniformity, adhesion and flatness of the heat shrink film, avoids problems such as uneven film sealing and wrinkles caused by traditional fixing methods, and significantly improves the packaging quality and market competitiveness of the product.

Claims

1. A tire film sealing packaging machine for improving the aesthetics of the film sealing, the packaging machine comprising: A frame (1), a tire conveying mechanism (4), a film feeding mechanism (2), a hot melt film cutting mechanism (3) and a heat shrinking mechanism (5); one end of the frame (1) is set as an input end, and the other end is set as an output end; the tire conveying mechanism (4) is arranged on the frame (1), connecting the input end and the output end, and allowing the tire to be vertically conveyed from the input end to the output end; the heat shrinking mechanism (5) is arranged on the frame (1), and the tire conveying mechanism (4) passes through the heat shrinking mechanism (5); The tire conveying mechanism (4) comprises two parallel conveying chains (402) and a plurality of positioning shafts arranged between the two conveying chains (402); fixed plates (410) are evenly arranged on the two conveying chains (402); bearings are arranged in the fixed plates (410); two ends of the positioning shafts are arranged on the fixed plates (410) through bearings; the two adjacent positioning shafts are respectively a first positioning shaft (406) and a second positioning shaft (407); a tire fixing position is formed between the first positioning shaft (406) and the second positioning shaft (407); a gear (408) is arranged at one end of the first positioning shaft (406), and a gear (408) is not arranged at the end of the second positioning shaft (407); A heat shrinking station is arranged inside the heat shrinking mechanism (5), and a rack (409) capable of meshing with a gear (408) is arranged on the frame (1) below the heat shrinking station along the direction of two conveying chains (402); when the first positioning shaft (406) passes through the heat shrinking station, the gear (408) and the rack (409) mesh with each other, driving the first positioning shaft (406) to rotate and driving the tire to rotate at least one circle on the heat shrinking station.

2. A tire film sealing and packaging machine for improving the aesthetics of the film according to claim 1, characterized in that: The tire conveying mechanism (4) also includes a driving motor (401), an active roller (403), a passive roller (404) and a transmission gear (405). The active roller (403) and the passive roller (404) are transversely arranged on the frame (1) and the arrangement direction is perpendicular to the conveying direction of the packaging machine. The transmission gear (405) is installed on both ends of the active roller (403) and the passive roller (404). The driving motor (401) is arranged on the frame (1) and is connected to the active roller (403) through the transmission gear (405).

3. A tire film sealing and packaging machine with improved film sealing aesthetics according to claim 1, characterized in that: A friction portion (411) is provided on the first positioning shaft (406) to increase the friction force between the first positioning shaft (406) and the tire.

4. A tire film sealing and packaging machine for improving the aesthetics of the film sealing according to claim 1, characterized in that: Sliding tracks (412) are arranged inside the two conveying chains (402), and rollers (413) are arranged on both sides of the positioning shaft respectively, and the rollers (413) are arranged in contact with the sliding tracks (412).

5. The tire film sealing and packaging machine with improved film sealing aesthetics according to claim 1, characterized in that: The heat shrink mechanism (5) comprises a heat preservation cavity (501) and a hot blowing device, wherein the blowing port of the hot blowing device is arranged on the side wall of the heat preservation cavity (501) to blow hot air to the sidewall of the tire so that the heat shrink film shrinks and wraps on the sidewall.

6. A tire film sealing and packaging machine for improving the aesthetics of the film sealing according to claim 5, characterized in that: The hot air blowing device comprises a heat shrinkable shell (51) and a heating and cooling component (52) and a circulating fan component (53) arranged on the heat shrinkable shell (51); the heat shrinkable shell (51) is provided with a receiving cavity and a vent (502), the receiving cavity is arranged inside the heat shrinkable shell (51), and the vent (502) is used to connect the heat preservation cavity (501) and the receiving cavity.

7. A tire film sealing and packaging machine for improving the aesthetics of the film according to claim 6, characterized in that: The heating and cooling assembly (52) includes a heating tube (503) and a cooling fan (504). The heating tube (503) is provided in a plurality of groups and is evenly distributed in the accommodating cavity. The cooling fan (504) is installed on the heat shrinkable shell (51) and is located in the heat preservation cavity (501).

8. The tire film sealing and packaging machine with improved film sealing aesthetics according to claim 6, characterized in that: The circulation fan assembly (53) is provided with a plurality of groups and is evenly distributed on the top of the heat shrinkable shell (51). The circulation fan assembly (53) comprises a circulation fan (505), an asbestos cover (506) and a centrifugal fan (507) which are sequentially assembled up and down. The circulation fan assembly (53) is clamped on the top of the heat shrinkable shell (51) through the asbestos cover (506), and the centrifugal fan (507) is connected to the heat preservation cavity (501).

9. The tire film sealing and packaging machine with improved film sealing aesthetics according to claim 6, characterized in that: The hot air blowing device further comprises a high temperature curtain (508), which is arranged on both ends of the heat shrinkable shell (51) close to the input end and the output end, and a plurality of slits (509) are arranged on the high temperature curtain (508).

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