A fully automatic wrapping machine

Abstract

SUMMARY OF THE INVENTION The present invention relates to a fully automatic wrapping machine with a rational structure, stable movement, and the ability to wrap cartons in an upright arrangement. This fully automatic wrapping machine comprises a base, a feed conveyor, a flip conveyor, and a wrapping pusher. The machine is characterized in that: the feed conveyor is connected to the flip conveyor and is located on the feed path; the wrapping pusher is located on the wrapping path, with the feed path and wrapping path arranged side by side; the feed conveyor comprises a feed conveyor belt; and the flip conveyor comprises a conveying platform, a flip stopper located on the conveying platform, and two lateral flip conveyor belts. This fully automatic wrapping machine can wrap cartons in an upright arrangement, meeting the linkage requirements of a front-end cartoning machine.

Description

[0001] field

[0002] The present invention relates to a packaging machine, in particular to a fully automatic wrapping machine. Background Art

[0003] A wrapping machine is a device used to wrap and seal packages with film. It is widely used in packaging for items such as food and pharmaceuticals. However, in the pharmaceutical packaging industry, a single package (a single carton containing medication) must be arranged into the required number of packages (multiple cartons), then wrapped with film and heat-sealed. Existing wrapping machines can wrap materials, but lack the ability to stand cartons upright for wrapping. There is an urgent need for a machine that can transport cartons, then stand them upright for wrapping. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention innovatively provides a fully automatic wrapping machine with a reasonable structure, stable movement, and the ability to wrap cartons in an upright arrangement.

[0005] The material transporting device of claim 1, wherein the loading mechanism is a feed material and the loading mechanism is a load carrying device, wherein the loading mechanism is a feed material and the loading mechanism is a load carrying device.

[0006] The wrapping path is provided with a lower film device, a front sealing and folding device and a side sealing and folding device, and the wrapping pushing plate can push the material toward the lower film device; the front sealing and folding device is located in front of the lower film device; the side sealing and folding device is located in front of the front sealing and folding device.

[0007] Two left and right supporting guide bars are provided on the wrapping path, and a lower pushing device is provided below the supporting guide bars. The lower pushing device includes a lower pushing seat, multiple lower pushing rods and a lower pushing power source. The multiple lower pushing rods are connected to the lower pushing seat along the front-to-back direction, and there is a spacing between two adjacent lower pushing rods to accommodate materials. The lower pushing seat can be lifted and lowered on the horizontal movable seat, and a lifting power source for driving the lower pushing seat to lift and lower is installed on the horizontal movable seat. The horizontal movable seat can be movably mounted on a horizontal guide rail, and the lower pushing power source can drive the horizontal movable seat to move on the horizontal guide rail.

[0008] The feed conveyor belt of the feed conveying device includes a first conveying surface and a second conveying surface, the first conveying surface is flush with the second conveying surface, and there is a blanking spacing between the first conveying surface and the second conveying surface that is greater than the length of the material. Two left and right guide plates are provided between the first conveying surface and the second conveying surface, and the left and right guide plates are both flush with the conveying surface, and the distance between the left and right guide plates is greater than the width of the material but less than the length of the material.

[0009] The upper portion of the film splicing platform is provided with an upper portion of the film feeding device, and the film feeding device includes a film feeding machine base, and the film feeding machine base is provided with two unwinding stations for placing the film roll, and the film feeding machine base is provided with a film splicing platform, and an upper heat-sealing mechanism and an upper cutting mechanism are provided above the film splicing platform, and the upper heat-sealing mechanism is located in front of the upper cutting mechanism, and the upper heat-sealing mechanism includes an upper heat-sealing head and an upper heat-sealing power source that drives the upper heat-sealing head to move up and down, and the upper cutting mechanism includes an upper cutting knife and an upper cutting power source that drives the upper cutting knife to move up and down; a lower heat-sealing mechanism and a lower cutting mechanism are provided below the film splicing platform, and the lower heat-sealing mechanism is located in front of the lower cutting mechanism, and the lower heat-sealing mechanism includes a lower heat-sealing head and a lower heat-sealing power source that drives the lower heat-sealing head to move up and down, and the lower cutting mechanism includes a lower cutting knife and a lower cutting power source that drives the lower cutting knife to move up and down; a window is provided on the film splicing platform for realizing mold closing between the upper heat-sealing head and the lower heat-sealing head.

[0010] The front end of the film splicing platform has a step portion, the plane of the step portion is lower than the plane of the film splicing platform, the window is located on the step portion, and a through hole for allowing the film to pass through is provided between the step portion and the film splicing platform.

[0011] The lower film device includes a film pulling roller group, a film cutting mechanism and a film feeding mechanism. The film pulling roller group is located above the film cutting mechanism, and the film feeding mechanism is located below the film cutting mechanism. The film cutting mechanism includes a film cutting knife, and the film feeding mechanism includes two left and right film suction components. Each film suction component includes a vacuum film suction synchronous belt and two upper and lower synchronous pulleys. The vacuum film suction synchronous belt is wound around the upper and lower synchronous pulleys. The synchronous pulley is connected to the film feeding power source. Negative pressure holes connected to the air source are distributed in the upper and lower directions on the vacuum film suction synchronous belt.

[0012] An upper air blowing guide block is provided between the film-stretching roller group and the film-cutting mechanism, and an upper air blowing hole is provided on the upper air blowing guide block, which is communicated with the air source, and the upper air hole of the upper air blowing guide block is arranged obliquely downward; an upper film guide strip is provided on the opposite side of the upper air blowing guide block, and a gap is provided between the upper film guide strip and the upper air blowing guide block for allowing the film to pass through; a lower air blowing guide block is provided between the film-cutting mechanism and the film-feeding mechanism, and a lower air blowing hole is provided on the lower air blowing guide block, which is communicated with the air source, and the lower air hole of the lower air blowing guide block is arranged obliquely downward; a lower film guide strip is provided on the opposite side of the lower air blowing guide block, and a gap is provided between the lower film guide strip and the lower air blowing guide block for allowing the film to pass through.

[0013] The front sealing and folding device includes a heat sealing mechanism, which includes a heat sealing head, a heat sealing connecting rod, a guide wheel, a guide wheel groove and a heat sealing power source. The heat sealing head is connected to one end of the heat sealing connecting rod, and the other end of the heat sealing connecting rod is hinged on the heat sealing lifting seat. The heat sealing lifting seat is transmission-connected to the heat sealing power source that drives the heat sealing lifting seat to rise and fall. The guide wheel is connected to the heat sealing connecting rod, and the guide wheel is located in the guide wheel groove, and the guide wheel groove is arranged obliquely upward.

[0014] The front sealing folding device includes a folding mechanism, which is arranged above and below the heat sealing mechanism, and there is a space between the folding mechanism and the heat sealing mechanism for allowing materials to pass through; the folding mechanism includes a front folding plate, a folding cam, a tension spring and a folding power source, the front folding plate is rotatably mounted on the folding lifting seat, the folding lifting seat is transmission-connected to the folding power source that drives the folding lifting seat to move up and down, the front folding plate is connected to a roller arm, the roller arm is connected to a roller, the folding cam is located on one side of the roller arm, one end of the tension spring is fixed, and the other end of the tension spring is connected to the front folding plate, and the tension spring drives the roller to act on the cam surface of the folding cam.

[0015] According to the present invention, a fully automatic wrapping machine can wrap cartons in a vertical arrangement, meeting the linkage requirements of a front-end cartoning machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention;

[0017] Figure 2 It is the front view of the present invention;

[0018] Figure 3 for Figure 2 A partial enlarged view of point C in the middle;

[0019] Figure 4 This is the front view of the push-down device;

[0020] Figure 5It is a perspective view of the feed conveying device;

[0021] Figure 6 It is a front view of the feeding and conveying device;

[0022] Figure 7 This is the internal structure diagram of the feeding and conveying device;

[0023] Figure 8 It is a three-dimensional diagram of the film supply device;

[0024] Figure 9 It is the front view of the film supply device;

[0025] Figure 10 This is a three-dimensional diagram of the film splicing platform;

[0026] Figure 11 It is a three-dimensional diagram of the lower membrane device;

[0027] Figure 12 This is the main view of the lower membrane device;

[0028] Figure 13 for Figure 12 A partial enlarged view of point E in the middle;

[0029] Figure 14 for Figure 11 A partial enlarged view of point D in the middle;

[0030] Figure 15 Schematic diagram of the upper air blowing guide block and the lower air blowing guide block;

[0031] Figure 16 This is the front view of the front sealing and folding device;

[0032] Figure 17 It is a three-dimensional diagram of the folding mechanism;

[0033] Figure 18 It is the main view of the folding mechanism;

[0034] Figure 19 It is the main view of the heat sealing mechanism. Implementation Method

[0035] This fully automatic wrapping machine is used to work in conjunction with a cartoning machine to arrange a single material W (such as a carton containing medicine) packaged by the cartoning machine into multiple materials W (multiple cartons) as required, and then wrap them all with film and heat seal them.

[0036] like Figure 1 and Figure 2As shown, this fully automatic wrapping machine includes a base, a feed conveyor device 1, a tilting conveyor device 2, and a wrapping pusher device 4. The feed conveyor device 1 is connected to the tilting conveyor device 2 and is located on the feed path A; the wrapping pusher device 4 is located on the wrapping path B, and the feed path A and the wrapping path B are arranged side by side. The feed conveyor device 1 includes a feed conveyor belt; the tilting conveyor device 2 includes a conveying platform 20, a tilting stopper 21 located on the conveying platform 20, and two left and right side tilting conveyor belts 22, with the tilting stopper 21 located between the left and right tilting conveyor belts 22. A side pusher mechanism 3 is provided in front of the tilting conveyor device 2. The side pusher mechanism 3 includes a side pusher plate and a side pusher power source that drives the side pusher plate to move left and right. The side pusher plate can push the material on the feed path A to the wrapping path B. The wrapping pusher device 4 is provided on the opposite side of the side pusher mechanism 3. The wrapping pusher device 4 includes a wrapping pusher plate and a wrapping pusher power source that drives the wrapping pusher plate to move back and forth.

[0037] Its working principle is as follows: the cartons coming out of the cartoning machine first enter the feeding conveyor 1, and the feeding conveyor 1 conveys the cartons to the wrapping and pushing device 4. Since the cartons coming out of the cartoning machine are all flat, and they need to be placed upright when wrapping, it is also necessary to stand the cartons on the wrapping and pushing device 4, such as Figure 3 As shown, after the material enters the conveying platform 20 of the flip conveyor device 2, the left and right flip conveyor belts 22 move forward with the material W. When the material W hits the flip stopper 21, the material W is automatically flipped and stood up under the action of the flip conveyor belt 22. In this way, the material continues to move forward under the push of the flip conveyor belt 22 and is arranged into a row of upright material groups; after that, the side pushing power source of the side pushing mechanism 3 drives the side pushing plate to move, and pushes the multiple upright material groups on the feeding path A to the wrapping path B, and then the wrapping pushing power source of the wrapping pushing device 4 drives the wrapping pushing plate to push the multiple upright material groups forward, and finally enters the wrapping station to complete the wrapping work.

[0038] The wrapping station is located on wrapping path B and is generally equipped with a lower film device 5, a front seal and folding device 6, and a side seal and folding device 7. The front seal and folding device 6 is located in front of the lower film device 5, while the side seal and folding device 7 is located in front of the front seal and folding device 6. The lower film device 5 is used to cut the film and send it in front of the wrapping pusher 4. When the wrapping pusher 4 pushes the material forward, the film automatically wraps the material. The front seal and folding device 6 is used to heat-seal the front end of the film wrapped around the material; the side seal and folding device 7 is used to heat-seal the side edges of the film wrapped around the material. It is worth mentioning that the fully automatic wrapping machine of the present invention can adopt the lower film device 5, front seal and folding device 6, and side seal and folding device 7 of the prior art.

[0039] As described above, after the front end of the film wrapping the material is heat-sealed by the front sealing and folding device 6, the material needs to be transported forward to the side sealing and folding device 7 for side heat sealing. Existing models on the market use the front package to push the entire package, which can easily cause adhesion between the individual packages (due to the stickiness of the film after heat sealing). It can also easily squeeze and deform the paper box, causing damage to the wrapped items and wasting film and paper boxes. To this end, the present invention provides two left and right support guides B0 on ​​the wrapping path B, such as Figure 4 As shown, the material W is placed on the left and right supporting guide bars B0, and a lower pushing device 8 is provided below the supporting guide bar B0. The lower pushing device 8 includes a lower pushing seat 81, multiple lower pushing rods 80 and a lower pushing power source 84. Multiple lower pushing rods 80 are connected to the lower pushing seat 81 along the front-to-back direction, and there is a distance between two adjacent lower pushing rods 80 to accommodate the material. The lower pushing seat 81 can be lifted and lowered on the horizontal movable seat 83. The horizontal movable seat 83 is provided with a lifting power source 82 for driving the lower pushing seat to lift and lower 83. The horizontal movable seat 83 is movably mounted on the horizontal guide rail, and the lower pushing power source 84 can drive the horizontal movable seat 83 to move on the horizontal guide rail.

[0040] The working principle of the lower pushing device 8 is as follows: after the front sealing and folding device 6 completes the front end heat sealing, the lifting power source 82 drives the lower pushing seat 81 to move upward, and the lower pushing rod 80 passes through the left and right support guide bars B0 to the front of the material, and then the lower pushing power source 84 drives the lower pushing seat 81 to move forward, so that the lower pushing rod 80 pushes the material forward. Since there are multiple lower pushing rods 80, each of which can separate two adjacent materials, the two adjacent materials W will not stick together, and the materials will not be squeezed, thereby ensuring the beauty of the material wrapping.

[0041] like Figure 1 As shown, the feeding conveyor device 1 can be a common conveyor device (with only one conveying surface). When the cartoning machine sends cartons to the wrapping machine, some cartons are not placed vertically, but tilted or placed horizontally. At this time, these cartons cannot be arranged vertically, and wrapping will also cause problems. In order to solve this problem, Figure 5 and Figure 6 As shown, the feed conveyor belt 110 of the feed conveying device 1 includes a first conveying surface 11 and a second conveying surface 12, the first conveying surface 11 is flush with the second conveying surface 12, and there is a blanking spacing 13 between the first conveying surface 11 and the second conveying surface 12 that is greater than the length of the material, and two left and right guide plates 14 are provided between the first conveying surface 11 and the second conveying surface 12, and the left and right guide plates 14 are both flush with the conveying surface (that is, flush with the first conveying surface 11 and the second conveying surface 12), and the distance between the left and right guide plates 14 is greater than the width of the material but less than the length of the material.

[0042] During operation, cartons are first conveyed forward on the first conveying surface 11. When the cartons are placed longitudinally, the distance between the left and right guide plates 14 is less than the length of the cartons, so the left and right guide plates 14 can support the cartons, allowing them to pass smoothly and then reach the second conveying surface 12. When the cartons are placed transversely, the distance between the left and right guide plates 14 is greater than the width of the cartons, and the gap 13 between the first conveying surface 11 and the second conveying surface 12 is greater than the length of the material, so the cartons fall through the gap 13. In this way, only cartons placed transversely can reach the second conveying surface 12, and then they are arranged longitudinally, allowing multiple cartons to be wrapped smoothly with film.

[0043] The first conveying surface 11 and the second conveying surface 12 can be formed by two independent feed conveyor belts. However, the two feed conveyor belts must be driven by two power sources, which is costly and difficult to achieve complete synchronization between the two feed conveyor belts.

[0044] In order to solve this problem, the first conveying surface 11 and the second conveying surface 12 of the present invention are formed by a conveyor belt. The specific structure is as follows: Figure 7 As shown, the conveying mechanism includes a first lower belt roller 111, a first right belt roller 112, a first left belt roller 113, a tensioning roller 115, a transmission roller 116, a second right belt roller 117, a second left belt roller 118, a second lower belt roller 119 and a feed conveyor belt 110. The feed conveyor belt 110 is wound around the first lower belt roller 111, the first right belt roller 112, the first left belt roller 113, the tensioning roller 115, the transmission roller 116, the second right belt roller 117, the second left belt roller 118, and the second lower belt roller 119 in sequence. On the upper side, the transmission roller 116 is connected to the conveying power source 19; the first lower belt roller 111 is located below the first right belt roller 112, and the second lower belt roller 119 is located below the second left belt roller 118. A blanking spacing 13 is formed between the first right belt roller 112 and the second left belt roller 118. The feed conveyor belt 110 between the first right belt roller 112 and the first left belt roller 113 forms a first conveying surface 11, and the feed conveyor belt 110 between the second right belt roller 117 and the second left belt roller 118 forms a second conveying surface 12. With the above structure, two conveying surfaces with a blanking spacing 13 can be formed while using one feed conveyor belt 110. In this way, only one conveying power source 19 is needed to drive the feed conveyor belt 110 to move, which is more cost-effective. Moreover, since it is only one feed conveyor belt 110, the linear speeds of the first conveying surface 11 and the second conveying surface 12 can remain exactly the same.

[0045] The cartoning machine for packaging cartons conveys cartons to the feeding conveyor 1 of the wrapping machine. However, there is a slight difference between the discharge speed of the cartoning machine and the feeding speed of the feeding conveyor 1, which may cause the cartons to be blocked on the feeding conveyor 1. In order to prevent blockage, Figure 7As shown, the present invention has a moving roller 114 on the left side of the first lower belt roller 111, and a tensioning roller 115 on the left side of the moving roller 114. The feed conveyor belt 110 passes around the first left belt roller 113, the moving roller 114, and the tensioning roller 115 in sequence. The first left belt roller 113 and the moving roller 114 are mounted on a moving base 120, which is slidably mounted on a guide rail 122. The moving base 120 is in transmission connection with an anti-blocking power source 121 that drives the moving base 120 to move forward on the guide rail 122. When the conveying mechanism is blocked, the anti-blocking power source 121 drives the moving base 120 forward on the guide rail 122, so that the first left belt roller 113 and the moving roller 114 move forward together (the movement of the moving roller 114 together can keep the feed conveyor belt 110 always taut). The first left belt roller 113 forms a gap with the discharge end of the cartoning machine, and the paper boxes fall from this gap, thereby preventing the occurrence of material blockage.

[0046] In addition, to detect whether a material jam has occurred in the conveying mechanism, the present invention provides a material jam photoelectric eye 15 above the first conveying surface 11. This material jam photoelectric eye 15 is electrically connected to a programmable logic controller (PLC), which controls the operation of an anti-jam power source 121. When the material jam photoelectric eye 15 detects a material jam, it transmits a signal to the PLC, which in turn controls the operation of the anti-jam power source 121, which in turn controls the movement of the first left belt roller 113.

[0047] like Figure 1 As shown, the present invention is provided with a film supply device 9 above the feed conveyor device 1. The film supply device 9 is used to provide film material. Existing wrapping machines on the market are only equipped with a single film roll. When any film roll is used up, the machine needs to be stopped and manually replaced. This will cause the production line to stop and affect upstream and downstream equipment. Manual film splicing also causes significant waste, increases workload and the probability of error.

[0048] In order to solve this problem, the present invention provides a film supply device 9 for achieving continuous film supply. Figure 8 and Figure 9 As shown, the film supply device 9 includes a film supply base 91, which has two unwinding stations 92 for placing film rolls, and each unwinding station 92 can place a film roll. Figure 9As shown, a film splicing platform 98 is installed on the film supply machine base 91, and an upper heat sealing mechanism and an upper cutting mechanism are provided above the film splicing platform 98. The upper heat sealing mechanism is located in front of the upper cutting mechanism, the upper heat sealing mechanism includes an upper heat sealing head 93 and an upper heat sealing power source 930 for driving the upper heat sealing head 93 to move up and down, and the upper cutting mechanism includes an upper cutting knife 95 and an upper cutting power source 950 for driving the upper cutting knife 95 to move up and down; and a lower heat sealing mechanism and a lower cutting mechanism are provided below the film splicing platform 98. The lower heat sealing mechanism is located in front of the lower cutting mechanism, the lower heat sealing mechanism includes a lower heat sealing head 94 and a lower heat sealing power source 940 for driving the lower heat sealing head 94 to move up and down, and the lower cutting mechanism includes a lower cutting knife 96 and a lower cutting power source 960 for driving the lower cutting knife 96 to move up and down; the film splicing platform 98 has a window for allowing the upper heat sealing head 93 and the lower heat sealing head 94 to achieve mold closing.

[0049] The film splicing principle is as follows: the front end of one film roll is pulled above the film splicing platform 98, and the front end of the other film roll is pulled below the film splicing platform 98, so that one of the film rolls is in the unloading state. When the film roll is almost used up (sensed by a photoelectric eye or sensor), the tail end of the film roll corresponds to the front end of the other film roll, and then the upper heat sealing head 93 and the lower heat sealing head 94 act together to heat-seal the two film rolls head to tail and connect them together. At the same time, the upper cutting knife 95 or the lower cutting knife 96 corresponding to the tail end of the film roll cuts off the tail end of the film roll (because the tail end of the film roll is attached to the film reel by tape, the tail end of the film roll must be connected to the tape and cut off together), thereby completing the film splicing work.

[0050] To ensure that the ends of the two film rolls are perfectly aligned, two upper baffles 97 are located above the film splicing platform 98. These baffles form an upper gap between the two baffles to allow the film to pass through. Furthermore, two lower baffles 970 are located below the film splicing platform 98. These baffles 97 limit the position of the upper film roll, while the lower baffles 970 limit the position of the lower film roll. This ensures that the upper and lower film rolls are perfectly aligned, ensuring that the ends of the two film rolls are perfectly aligned, improving the film splicing process.

[0051] As described above, the film splicing process begins when a film roll is nearly finished. To determine whether a film roll is nearly finished, the present invention provides a film splicing detection photoelectric eye 920 at the unwinding station 91 (both unwinding stations 91 have this photoelectric eye). This photoelectric eye 920 is electrically connected to a programmable logic controller (PLC), which controls the operation of an upper heat-sealing power source 930, a lower heat-sealing power source 940, an upper cutting power source 950, and a lower cutting power source 960. When this photoelectric eye 920 detects that the film roll is nearly finished, it transmits a signal to the PLC, which then controls the operation of each power source, completing the film splicing process described above.

[0052] When splicing the film, both the upper and lower heat-sealing heads 93 and 94 need to be heated. To preheat the upper and lower heat-sealing heads 93 and 94 in advance, the present invention provides a preheating photoelectric eye 921 at the unwinding station 91. The preheating photoelectric eye 921 is electrically connected to the PLC, which controls the preheating of the upper and lower heat-sealing heads 93 and 94. When the preheating photoelectric eye 921 detects that the film roll has been used to a certain extent, the preheating photoelectric eye 921 transmits a signal to the PLC, which controls the preheating of the upper and lower heat-sealing heads 93 and 94. After the upper and lower heat-sealing heads 93 and 94 have completed heat sealing, they no longer heat the upper and lower heat-sealing heads 93 and 94, thereby minimizing energy consumption.

[0053] In order to allow the film roll below the film splicing platform 98 to have a film hanging position, and at the same time allow the splicing positions of the upper and lower films to be attached together before heat sealing, such as Figure 10 As shown, the present invention has a step portion 980 at the front end of the film splicing platform 98, the plane of the step portion 980 is lower than the plane of the film splicing platform 98, the window 981 is located on the step portion 980, and there is a perforation 982 between the step portion 980 and the film splicing platform 98 for the film to pass through, so that the film below the film splicing platform 98 passes through the perforation 982 and hangs on the step portion 980. Since the plane of the step portion 980 is lower than the plane of the film splicing platform 98, the film above the film splicing platform 98 droops at the step portion 980 and fits together with the film below. Since the upper and lower films are bonded together and then heat-sealed, the film will not be pulled during heat sealing, and the heat sealing effect is better. Of course, the step portion 980 and the film splicing platform 98 can be an integral structure or a split structure, both of which fall within the scope of protection of the present invention.

[0054] like Figure 1 and Figure 2 As shown, the film lowering device 5 is used to cut the next sheet of film from the roll and place it in front of the wrapping and pushing device 4. In common wrapping machines currently on the market, the film lowering device cuts the film and then blows the film downward using air blowing. However, this film blowing method takes a long time to fall the film, and the film is easily deformed, resulting in unsightly packaging and low packaging efficiency.

[0055] To this end, the present invention provides a novel lower membrane device 5, such as Figure 11 and Figure 12 As shown, the film lowering device 5 includes a film pulling roller group 51, a film cutting mechanism 54 and a film feeding mechanism 57. The film pulling roller group 51 is located above the film cutting mechanism 54, and the film feeding mechanism 57 is located below the film cutting mechanism 54. The film pulling roller group 51 pulls the film downward. When it is pulled to a certain length, the film cutting mechanism 54 cuts the film and then feeds it downward through the film feeding mechanism 57. Figure 13 As shown, the film cutting mechanism 54 includes a film cutting knife 540, and the film feeding mechanism 57 includes two left and right film suction components, as shown in FIG. Figure 14 As shown, each film suction assembly includes a vacuum film suction timing belt 570 and two upper and lower timing pulleys. The vacuum film suction timing belt 570 is wound around the upper and lower timing pulleys, which are in driving connection with a film feeding power source 572. The vacuum film suction timing belt 570 is provided with negative pressure holes 571 connected to the air source distributed vertically. Driven by the film feeding power source 572, the left and right vacuum film suction timing belts 570 move vertically.

[0056] During operation, the film on the film roll, pulled by the film-pulling roller assembly 51, moves downward. When the film reaches the set position, the film cutting blade 540 of the film-cutting mechanism 54 cuts the film. The left and right vacuum film-absorbing synchronous belts 570 of the film-feeding mechanism 57 absorb the film through the negative pressure holes 571 on their surfaces, conveying the film downward. Due to the high speed of the vacuum film-absorbing synchronous belts 570, the film takes less time to move downward, significantly improving packaging efficiency. Moreover, since the film is absorbed by the vacuum film-absorbing synchronous belts 570, it remains more flat, ensuring the beauty of the subsequent wrapping.

[0057] Since there is a gap between the film-drawing roller group 51 and the film-cutting mechanism 54 (due to installation problems, it is unavoidable), the film may be deformed at this position during the downward movement. In order to prevent this from happening, Figure 13 As shown, the present invention is provided with an upper blowing guide block 52 between the film drawing roller group 51 and the film cutting mechanism 54. Figure 15 As shown, the upper air blowing guide block 52 is provided with an upper air blowing hole 520 that communicates with the air source and is positioned obliquely downward. An upper film guide strip 53 is provided on the opposite side of the upper air blowing guide block 52, with a gap between the upper film guide strip 53 and the upper air blowing guide block 52 allowing film to pass through. The upper air blowing hole 520 of the upper air blowing guide block 52 blows the film obliquely downward, ensuring that the film always rests flatly on the upper film guide strip 53. This effectively prevents deformation of the film between the film-drawing roller assembly 51 and the film-cutting mechanism 54, ensuring that the film remains flat.

[0058] like Figure 13As shown, the film-drawing roller group 51 includes an active film-drawing roller 510 and a driven film-drawing roller 511. The active film-drawing roller 510 is connected to a film-drawing power source 512, and the active film-drawing roller 510 and the driven film-drawing roller 511 cooperate to draw the film. In order to allow the film to move smoothly downward after entering between the active film-drawing roller 510 and the driven film-drawing roller 511, the driven film-drawing roller 511 or the active film-drawing roller 510 of the present invention has an annular groove along the circumference, and the upper end of the upper film guide strip 53 extends into the annular groove. This structure does not affect the coordinated traction of the active film-drawing roller 510 and the driven film-drawing roller 511. At the same time, after the film enters between the active film-drawing roller 510 and the driven film-drawing roller 511, it can move downward under the guidance of the upper film guide strip 53, thereby ensuring the flatness of the film.

[0059] Similarly, since there is a gap between the film cutting mechanism 54 and the film feeding mechanism 57 (due to installation problems, it is unavoidable), the film may be deformed at this position during the downward movement. In order to prevent this from happening, Figure 13 As shown, the present invention is provided with a lower blowing guide block 55 between the film cutting mechanism 54 and the film feeding mechanism 57. Figure 15 As shown, the lower air blowing guide block 55 is provided with a lower air blowing hole 550 that communicates with the air source. The lower air blowing hole 550 of the lower air blowing guide block 55 is arranged obliquely downward. A lower film guide strip 56 is provided on the opposite side of the lower air blowing guide block 55. A gap is provided between the lower film guide strip 56 and the lower air blowing guide block 55 to allow the film to pass through. The lower air blowing hole 550 of the lower air blowing guide block 55 blows the film obliquely downward, ensuring that the film always rests flatly on the lower film guide strip 56. This effectively prevents the film from deforming between the film cutting mechanism 54 and the film feeding mechanism 57, ensuring that the film remains flat.

[0060] Since there is space between the left and right film suction assemblies, in order to prevent the film from deforming in this space, the present invention has two front and rear film blocking strips 58 between the left and right film suction assemblies. There is a gap between the front and rear film blocking strips 58 to allow the film to pass through. While the left and right sides of the film are adsorbed on the left and right vacuum film suction synchronous belts 570, the middle part of the film is located between the front and rear film blocking strips 58. In this way, the middle part of the film will not deform, ensuring that the film is flat.

[0061] The film cutting mechanism 54 can adopt an ordinary flat cutting mechanism or a rolling cutting structure. In the case of adopting the rolling cutting structure, the film cutting mechanism 54 includes, in addition to the film cutting knife 540, a fixed cutter 541. The film cutting knife 540 is mounted on a rotating shaft 542, and the rotating shaft 542 is connected to the film cutting power source. When driven by the film cutting power source, the rotating shaft 542 rotates, and the film cutting knife 540 rotates to cooperate with the fixed cutter 541 to achieve film cutting.

[0062] like Figure 1As shown, the front sealing and folding device 6 is used to heat seal the front end of the film wrapping the material. Figure 16 As shown, the front-sealing folding device 6 includes a folding mechanism 61 and a heat-sealing mechanism 62, which are arranged one above the other. There is a space between the folding mechanism 61 and the heat-sealing mechanism 62 for allowing materials to pass through. The folding mechanism 61 folds the upper end of the film wrapping the material 63 downward, while the heat-sealing mechanism 62 pushes the lower end of the film wrapping the material 63 upward, and at the same time heat-seals the upper and lower ends of the film together.

[0063] The specific structures and working principles of the heat sealing mechanism 62 and the folding mechanism 61 are respectively introduced below.

[0064] like Figure 19 As shown, the heat sealing mechanism 62 of the front sealing and folding device 6 includes a heat sealing head 620, a heat sealing connecting rod 621, a guide wheel 622, a guide wheel groove 624 and a heat sealing power source 629. The heat sealing head 620 is connected to one end of the heat sealing connecting rod 621, and the other end of the heat sealing connecting rod 621 is hinged to the heat sealing lifting seat 623. Figure 16 As shown, the heat sealing lift seat 623 is connected to the heat sealing power source 629 that drives the heat sealing lift seat 623 to rise and fall, and the guide wheel 622 is connected to the heat sealing connecting rod 621. The guide wheel 622 is located in the guide wheel groove 624, and the guide wheel groove 624 is set obliquely upward.

[0065] During operation, the heat sealing power source 629 drives the heat sealing lifting seat 623 to move upward, and the heat sealing connecting rod 621 moves upward accordingly. The guide wheel 622 also moves upward in the guide wheel groove 624. Since the guide wheel groove 624 is set obliquely upward, the guide wheel 622 also moves obliquely upward, thereby driving the upper end of the heat sealing connecting rod 621 to move obliquely upward. In this way, the heat sealing head 620 connected to the upper end of the heat sealing connecting rod 621 acts obliquely upward on the film. Since the heat sealing head 620 has a component force acting on the film positively, it can achieve a better heat sealing effect.

[0066] To ensure more stable movement of the heat sealing head 620, the present invention connects a spring seat 626 to the heat sealing lift 623. A spring 625 is mounted on the spring seat 626. This spring 625 acts on the heat sealing link 621. The point of action of the spring 625 is located below the guide wheel 622 and above the hinge point 627 between the heat sealing link 621 and the heat sealing lift 623. The action of the spring 625 ensures more stable and less wobbling movement of the heat sealing link 621, further enhancing the heat sealing effect.

[0067] like Figure 17 and Figure 19As shown, the folding mechanism 61 includes a folding plate 610, a folding cam 616, a tension spring 615 and a folding power source 619. The folding plate 610 is rotatably mounted on the folding lifting seat 612. The folding lifting seat 612 is transmission-connected to the folding power source 619 that drives the folding lifting seat 612 to move up and down. The folding plate 610 is connected to a roller arm 613, and the roller arm 613 is connected to a roller 614. The folding cam 616 is located on one side of the roller arm 613. One end of the tension spring 615 is fixed, and the other end of the tension spring 615 is connected to the folding plate 610. The tension spring 615 drives the roller 614 to act on the cam surface of the folding cam 616.

[0068] During operation, the folding power source 619 drives the folding lifting seat 612 to move downward, and the tension spring 615 drives the roller 614 to always act on the cam surface of the folding cam 616. The roller 614 on the roller arm 613 rolls on the cam surface of the folding cam 616. Due to the action of the folding cam 616, the roller arm 613 drives the folding plate 610 to rotate. In this way, the folding plate 610 can move downward while also acting on the film from the front, that is, there is a component force acting on the film from the front, which can make the film tightly attached to the material 63, making the film's wrapping better and the packaging more compact and beautiful.

[0069] It is worth mentioning here that the folding plate 610 can be directly hinged on the folding lifting seat 612, but the structure is relatively complicated. The present invention hinges the roller arm 613 on the folding lifting seat 612. Since the roller arm 613 is connected to the folding plate 610, it is equivalent to the folding plate 610 being rotatably installed on the folding lifting seat 612. This connection method has a simpler structure, is more conducive to manufacturing, and can also reduce costs.

[0070] Before heat sealing, in order to make the upper and lower film surfaces more flat, Figure 16 As shown, the present invention is provided with a front pressing mechanism 64 on the front side of the folding mechanism 61, as shown in FIG. Figure 18 As shown, the front pressing mechanism 64 includes a front pressing plate 640, a front spring 642, and a front support 643. The front pressing plate 640 is slidably mounted on the front support 643 via a front guide post 641. The front spring 642 is sleeved on the front guide post 641 and positioned between the front support 643 and the front pressing plate 640. Due to the action of the front spring 642, the front pressing plate 640 has the elasticity to move up and down. When the material passes under the front pressing plate 640, the front pressing plate 640 can press on the material, so that the film wrapped on the material can be more smoothly attached to the material, thereby improving the film wrapping performance and making the packaging more beautiful.

[0071] After the material is heat-sealed, in order to make the upper and lower film surfaces more flat, Figure 16 As shown, the rear side of the folding mechanism 61 is provided with a rear pressing mechanism 65, as shown in FIG. Figure 18 As shown, the rear pressing mechanism 65 includes a rear pressing plate 650, a rear spring, and a rear support 653. The rear pressing plate 650 is slidably mounted on the rear support 653 via a rear guide post 651. The rear spring is sleeved on the rear guide post 651 and is located between the rear support 653 and the rear pressing plate 650. Due to the action of the rear spring, the rear pressing plate 650 has the elasticity to move up and down. When the material passes under the rear pressing plate 650, the rear pressing plate 650 can press on the material, so that the film wrapped on the material can be more smoothly attached to the material, thereby improving the film wrapping performance and making the packaging more beautiful.

[0072] like Figure 1 As shown, the side sealing and folding device 7 includes two left and right side folding plates and two left and right side heat sealing plates. The side heat sealing plates are located in front of the side folding plates. The side folding plates can fold the film on the side of the material, and then the side heat sealing plates are pressed against the side of the material to heat seal the film on the side of the material.

[0073] Finally, it is worth mentioning that the present invention is provided with a discharge conveyor device 70 in front of the side seal folding device 7. The discharge conveyor device 70 includes a discharge conveyor belt, and the lower pushing device 8 pushes the material onto the discharge conveyor belt. An upper shaping mechanism is provided above the discharge conveyor device 70. The upper shaping mechanism includes an upper heating plate and an upper shaping power source that drives the upper heating plate to move up and down. The upper heating plate presses down on the upper surface of the material, allowing the film on the upper surface of the material to heat-seal and shrink and shape it, making it more beautiful. A lower shaping mechanism is provided below the upper conveying surface of the discharge conveyor belt. The lower shaping mechanism includes a lower heating plate and a lower shaping power source that drives the lower heating plate to move up and down. The lower heating plate can heat the upper conveying surface of the discharge conveyor belt, and the upper conveying surface of the discharge conveyor belt can heat-seal and shrink the film on the lower surface of the material, making it more beautiful.

Claims

1. A fully automatic wrapping machine, comprising a base, a feeding conveying device (1), a turning conveying device (2) and a wrapping pushing device (4), characterized in that: The feeding conveying device (1) is connected to the turning conveying device (2) and is located on the feeding path (A); the wrapping pushing device (4) is located on the wrapping path (B), and the feeding path (A) and the wrapping path (B) are arranged side by side; the feeding conveying device (1) includes a feeding conveyor belt (110); the turning conveying device (2) includes a conveying platform (20), a turning stopper (21) located on the conveying platform (20), and two left and right side turning conveyor belts (22), and the turning stopper (21) is located between the left and right turning conveyor belts (22); a side pushing mechanism (3) is provided in front of the turning conveying device (2) The side pushing mechanism (3) includes a side pushing plate and a side pushing power source for driving the side pushing plate to move left and right, and the side pushing plate can push the material on the feeding path (A) to the wrapping path (B); the wrapping pushing device (4) is arranged on the opposite side of the side pushing mechanism (3), and the wrapping pushing device (4) includes a wrapping pushing plate and a wrapping pushing power source for driving the wrapping pushing plate to move forward and backward; the wrapping path (B) is provided with a lower film device (5), a front sealing and folding device (6) and a side sealing and folding device (7), and the wrapping pushing plate can push the material to the lower film device (5); the front sealing and folding device (6) is located in front of the lower film device (5); The side sealing and folding device (7) is located in front of the front sealing and folding device (6); the lower film device (5) includes a film pulling roller group (51), a film cutting mechanism (54) and a film feeding mechanism (57), wherein the film pulling roller group (51) is located above the film cutting mechanism (54), and the film feeding mechanism (57) is located below the film cutting mechanism (54), wherein the film cutting mechanism (54) includes a film cutting knife (540), and the film feeding mechanism (57) includes two left and right film suction components, each of which includes a vacuum film suction synchronous belt (570) and two upper and lower synchronous pulleys, wherein the vacuum film suction synchronous belt (570) is wound around the upper and lower synchronous pulleys, and the synchronous pulleys are connected to the film feeding power source (572), and negative pressure holes (571) connected to the air source are distributed along the upper and lower directions on the vacuum film suction synchronous belt (570).

2. The fully automatic wrapping machine according to claim 1, characterized in that: The wrapping path (B) is provided with two left and right support guide bars (B0), and a lower pushing device (8) is provided below the support guide bar (B0). The lower pushing device (8) includes a lower pushing seat (81), a plurality of lower pushing rods (80) and a lower pushing power source (84). The plurality of lower pushing rods (80) are connected to the lower pushing seat (81) along the front-back direction, and there is a spacing between two adjacent lower pushing rods (80) for accommodating materials. The lower pushing seat (81) can be installed on a horizontal movable seat (83) in a lifting manner. A lifting power source (82) for driving the lower pushing seat (81) to lift and lower is installed on the horizontal movable seat (83). The horizontal movable seat (83) can be movably installed on a horizontal guide rail, and the lower pushing power source (84) can drive the horizontal movable seat (83) to move on the horizontal guide rail.

3. The fully automatic wrapping machine according to claim 1, characterized in that: The feed conveyor belt (110) of the feed conveying device (1) includes a first conveying surface (11) and a second conveying surface (12), the first conveying surface (11) and the second conveying surface (12) are flush with each other, a blanking spacing (13) greater than the length of the material is provided between the first conveying surface (11) and the second conveying surface (12), two left and right guide plates (14) are provided between the first conveying surface (11) and the second conveying surface (12), the left and right guide plates (14) are both flush with the conveying surface, and a distance between the left and right guide plates (14) is greater than the width of the material but less than the length of the material.

4. The fully automatic wrapping machine according to claim 1, characterized in that: A film supply device (9) is provided above the feed conveying device (1), and the film supply device (9) includes a film supply machine base (91), and the film supply machine base (91) has two unwinding stations (92) for placing film rolls. A film splicing platform (98) is installed on the film supply machine base (91), and an upper heat sealing mechanism and an upper cutting mechanism are provided above the film splicing platform (98). The upper heat sealing mechanism is located in front of the upper cutting mechanism. The upper heat sealing mechanism includes an upper heat sealing head (93) and an upper heat sealing power source (930) for driving the upper heat sealing head (93) to move up and down. The upper cutting mechanism includes an upper cutting knife (95) and an upper cutting power source (950) for driving the upper cutting knife (95) to move up and down; a lower heat sealing mechanism and a lower cutting mechanism are provided below the film splicing platform (98), the lower heat sealing mechanism is located in front of the lower cutting mechanism, the lower heat sealing mechanism includes a lower heat sealing head (94) and a lower heat sealing power source (940) for driving the lower heat sealing head (94) to move up and down, the lower cutting mechanism includes a lower cutting knife (96) and a lower cutting power source (960) for driving the lower cutting knife (96) to move up and down; the film splicing platform (98) has a window (981) for allowing the upper heat sealing head (93) and the lower heat sealing head (94) to achieve mold closing.

5. The fully automatic wrapping machine according to claim 4, characterized in that: The front end of the film-joining platform (98) has a step portion (980), the plane of the step portion (980) is lower than the plane of the film-joining platform (98), the window (981) is located on the step portion (980), and a through hole (982) for allowing the film to pass through is provided between the step portion (980) and the film-joining platform (98).

6. The fully automatic wrapping machine according to claim 1, characterized in that: An upper air blowing guide block (52) is provided between the film-drawing roller group (51) and the film-cutting mechanism (54), and an upper air blowing hole (520) communicating with an air source is provided on the upper air blowing guide block (52), and the upper air blowing hole (520) of the upper air blowing guide block (52) is arranged obliquely downward; an upper film guide strip (53) is provided on the opposite side of the upper air blowing guide block (52), and a gap is provided between the upper film guide strip (53) and the upper air blowing guide block (52) to allow the film to pass through. A lower air blowing guide block (55) is provided between the film cutting mechanism (54) and the film feeding mechanism (57), and a lower air blowing hole (550) communicating with an air source is provided on the lower air blowing guide block (55), and the lower air blowing hole (550) of the lower air blowing guide block (55) is arranged obliquely downward; a lower film guide strip (56) is provided on the opposite side of the lower air blowing guide block (55), and a gap is provided between the lower film guide strip (56) and the lower air blowing guide block (55) for allowing the film to pass through.

7. The fully automatic wrapping machine according to claim 1, characterized in that: The front sealing and folding device (6) includes a heat sealing mechanism (62), and the heat sealing mechanism (62) includes a heat sealing head (620), a heat sealing connecting rod (621), a guide wheel (622), a guide wheel groove (624) and a heat sealing power source (629). The heat sealing head (620) is connected to one end of the heat sealing connecting rod (621), and the other end of the heat sealing connecting rod (621) is hinged to the heat sealing lifting seat (623). The heat sealing lifting seat (623) is in transmission connection with the heat sealing power source (629) that drives the heat sealing lifting seat (623) to rise and fall. The guide wheel (622) is connected to the heat sealing connecting rod (621), and the guide wheel (622) is located in the guide wheel groove (624), and the guide wheel groove (624) is arranged obliquely upward.

8. The fully automatic wrapping machine according to claim 7, characterized in that: The front sealing folding device (6) includes a folding mechanism (61), the folding mechanism (61) and the heat sealing mechanism (62) are arranged up and down, and there is a space between the folding mechanism (61) and the heat sealing mechanism (62) for allowing materials to pass through; the folding mechanism (61) includes a front folding plate (610), a folding cam (616), a tension spring (615) and a folding power source (619), the front folding plate (610) is rotatably mounted on the folding lifting seat (612), and the folding lifting seat (612) is connected to the driving The movable hemming lifting seat (612) is connected to a hemming power source (619) for moving up and down. The front hemming plate (610) is connected to a roller arm (613), and the roller arm (613) is connected to a roller (614). The hemming cam (616) is located on one side of the roller arm (613). One end of the tension spring (615) is fixed, and the other end of the tension spring (615) is connected to the front hemming plate (610). The tension spring (615) drives the roller (614) to act on the cam surface of the hemming cam (616).

Images