A carton sealing machine using wet adhesive tape

Abstract

The application provides a sealing machine using wet adhesive tape, when the sealing machine is operated, the adhesive tape pulled out from the adhesive tape installation of unwinding device passes between the upper conveying roller and the lower conveying roller, then passes through the tape passing opening of the tape cutting device, winds around the wetting roller of the wetting device, and extends to the lower of the lifting frame. In the working process, the tape cutting device cuts the adhesive tape, and the cut adhesive tape is wetted by the wetting roller and then extends to the lower of the lifting frame. When the box to be sealed is conveyed to the position of the portal frame and moves to the position of the extended wet adhesive tape, the wet adhesive tape is adhered to the gap between the two sealing plates of the box, and moves with the movement of the box, so that the wet adhesive tape adheres to the box to form the sealing process. As can be seen, the application can automatically wet the adhesive tape to form a wet adhesive tape during the conveying process of the adhesive tape, and the wet adhesive tape seals the box, and the application can also adjust the sealing height of the wet adhesive tape by adjusting the height of the lifting frame, so that the application has wide applicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of packaging equipment, in particular to a carton sealing machine using wet adhesive tape. BACKGROUND

[0002] Packaging is a necessary condition for products to enter the circulation field, and the main means to achieve packaging is to use boxes to package products, and the boxes need to be sealed with adhesive tape. With the development of science and technology, the steps of adhesive tape sealing are mostly replaced by carton sealing machines instead of manual work to improve packaging efficiency.

[0003] The current carton sealing machine mostly uses transparent adhesive tape and other self-adhesive tapes. The adhesion of such self-adhesive tapes is lower than that of wet adhesive tape. The current carton sealing machine is not suitable for sealing with wet adhesive tape, and therefore cannot be used for sealing with wet adhesive tape. SUMMARY

[0004] In view of the deficiencies in the above background art, the present application provides a carton sealing machine using wet adhesive tape to overcome the problem that the current carton sealing machine is not suitable for wet adhesive tape.

[0005] The present application adopts the following technical solutions:

[0006] A carton sealing machine using wet adhesive tape, characterized in that the carton sealing machine comprises:

[0007] A conveyor for conveying boxes to be sealed;

[0008] A gantry comprising a column and a lifting frame, the column being fixed on both sides of the conveyor, and the lifting frame being connected between the two columns and being lifted relative to the conveyor;

[0009] A unwinding device comprising an outer shaft connected to one side of the lifting frame for rotation, and a roll of adhesive tape being wound around the outer shaft so that the roll of adhesive tape is fixed relative to the outer shaft;

[0010] A tape feeding device comprising an upper conveying roller and a lower conveying roller both connected to the lifting frame for rotation, and a tape feeding motor fixed to one side of the lifting frame for driving the lower conveying roller to rotate;

[0011] A tape cutting device comprising a knife holder fixed to the lifting frame, and a movable blade moving relative to a tape passing opening of the knife holder;

[0012] A wetting device comprising a second water tank fixed to the lifting frame and containing water, and a wetting roller connected to the second water tank for rotation and having one side immersed in the water in the second water tank;

[0013] The tape pulled out by the film roll installed in the unwinding device passes between the upper conveyor roller and the lower conveyor roller, then passes sequentially through the movable blade of the tape cutting device, around the wet roller of the wettability device, and extends out from under the lifting frame.

[0014] In one possible implementation, a first slider that slides vertically is provided in both of the columns, and a crossbeam is provided between the two columns of the gantry frame. The two ends of the crossbeam are respectively fixed to the two first sliders, and the lifting frame and the crossbeam are fixedly connected.

[0015] In one possible implementation, a first drive cylinder is also fixed inside the column. The telescopic rod of the first drive cylinder extends and retracts vertically, and the telescopic rod of the first drive cylinder is fixed to the first slider. The telescopic rods of the two first drive cylinders extend and retract synchronously.

[0016] In one possible implementation, a vertically arranged first lead screw is also connected inside the column. The first lead screw is restricted to rotating only within the column and spirally passes through the first slider. A sprocket is fixed to the upper end of the first lead screw, and the sprockets at the upper ends of the first lead screws of both columns are engaged with the same chain.

[0017] In one possible implementation, strip-shaped limiting mechanisms are provided on both sides of the conveyor, and the boxes to be packaged are restricted to move between the two limiting mechanisms, and the two limiting mechanisms move synchronously toward the middle or sides of the conveyor.

[0018] In one possible implementation, the conveyor is a roller conveyor, and both ends of the limiting mechanism are fixed with connecting columns. The connecting columns pass through the gap between the two rollers of the conveyor and then fix a second support. Both ends of the conveyor are connected to a second lead screw below the rollers. The two ends of the second lead screw are provided with external threads in opposite directions, and the two external threads are respectively threaded to the second support at the same end of the two limiting structures.

[0019] In one possible implementation, both second lead screws are fixed with second sprockets within the frame of the conveyor, and both second sprockets are engaged with a second chain.

[0020] In one possible implementation, one end of the second lead screw extends out of the frame of the conveyor and is fixedly connected to a second handle.

[0021] In one possible implementation, the belt feeding device further includes an upper pressure plate and a lower pressure plate, the lower pressure plate being fixed to the lifting frame, and the upper pressure plate rotating relative to the lower pressure plate; both the upper and lower pressure plates are provided with clearance gaps, the lower conveyor roller is located below the lower pressure plate, and the upper surface of the lower conveyor roller passes through the clearance gap of the lower pressure plate, the upper conveyor roller is located above the upper pressure plate, and the lower surface of the upper conveyor roller passes through the gap of the upper pressure plate, and the tape passes between the upper and lower pressure plates and between the upper and lower conveyor rollers.

[0022] In one possible implementation, the belt feeding device further includes a swing frame, a second swing shaft fixed to one side of the swing frame, the second swing shaft passing through the lifting frame and being restricted to rotate relative to the lifting frame; a swing arm fixed to the second swing shaft on the other side of the lifting frame, the swing arm swinging relative to the lifting frame about the second swing shaft as the axis and then fixed.

[0023] In one possible implementation, the carton sealing machine further includes a pressing device comprising a torsion frame and guide rollers. The lifting frame has a third swing shaft fixed on one side connected to the second water tank. One end of each of the two torsion frames is connected to the third swing shaft for rotation. The guide rollers are connected to the ends of the two torsion frames near the second water tank. The side of the wet tape facing away from the starting end of the conveyor is attached to the two guide rollers. A torsion spring is fitted on the third swing shaft, with both ends of the torsion spring extending into the two torsion frames respectively. A stop bar is fixed on the upper torsion frame of the lifting frame, which blocks the upper torsion frame, causing the lower torsion frame to swing downward under the torsion force of the torsion spring.

[0024] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: In the structure of the present invention, the height of the lifting frame relative to the conveyor can be adjusted by adjusting the height of the crossbeam of the gantry frame, so that the unwinding device, the tape feeding device, the tape cutting device, and the wetting device can rise or fall to a height close to that of the box. During operation, after the tape pulled out of the unwinding device passes between the upper and lower conveyor rollers, it passes sequentially through the tape insertion port of the tape cutting device, around the wetting roller of the wetting device, and extends out under the lifting frame. During operation, the tape cutting device cuts the tape, and the cut tape is wetted by the wetting roller and extends out under the lifting frame. When the box to be sealed is conveyed to the position of the gantry frame and moves to the position of the extended wet tape, the wet tape sticks to the gap between the two sealing plates, and moves with the movement of the box, thus realizing the process of sealing the box by the wet tape cut by the moving blade and then wetted. Therefore, this invention can automatically wet the conveyor belt during the conveyor belt process to form a wet conveyor belt, and seal the box with the wet conveyor belt. It is applicable to the sealing of boxes with wet conveyor belts. Furthermore, this invention can also adjust the sealing height of the box with wet conveyor belts by adjusting the height of the lifting frame, thus having wide applicability. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 for Figure 1 A schematic diagram showing the concealed lifting frame.

[0027] Figure 3 A three-dimensional structural diagram showing the lifting frame with the dust cover concealed.

[0028] Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure from another perspective.

[0029] Figure 5 This is a three-dimensional structural diagram of the gantry frame connecting beams.

[0030] Figure 6 This is a cross-sectional schematic diagram of the internal structure of the column of the gantry frame.

[0031] Figure 7 This is a three-dimensional structural diagram of the conveyor viewed from below.

[0032] Figure 8 for Figure 7 A magnified diagram of point A in the middle.

[0033] Figure 9 This is a schematic diagram of the three-dimensional structure of the two limiting mechanisms.

[0034] Figure 10This is a three-dimensional cross-sectional structural diagram of the unwinding device.

[0035] Figure 11 for Figure 10 A magnified diagram of point B in the middle.

[0036] Figure 12 A three-dimensional structural diagram showing the fixed connection between the central part of the second protective plate and the central axis.

[0037] Figure 13 This is a cross-sectional view of the tapered sleeve handle after it has been screwed into the threaded hole of the clamping part.

[0038] Figure 14 This is a three-dimensional structural diagram of the belt feeding device.

[0039] Figure 15 This is a three-dimensional structural diagram of the belt feeding device viewed from below.

[0040] Figure 16 This is a three-dimensional structural diagram of the slitting device.

[0041] Figure 17 This is a schematic diagram of the internal structure of the cutting device from the front view.

[0042] Figure 18 This is a three-dimensional structural diagram of the water-wetting device.

[0043] Figure 19 A cross-sectional diagram of a water bottle placed on a water replenishment rack.

[0044] Figure 20 A three-dimensional structural diagram showing the pressing device positioned on one side of the second water tank.

[0045] Figure 21 This is a schematic diagram of the lateral cross-sectional structure of the present invention.

[0046] Figure 22 for Figure 21 A magnified diagram of point C.

[0047] Figure 23 This is a structural diagram of the unwinding device, tape feeding device, tape cutting device, wettability device, and tape pressing device located inside the frame.

[0048] Figure 24 This is a three-dimensional structural diagram of the various devices connected below the conveyor.

[0049] Figure 25 for Figure 24 A magnified diagram of point D in the middle. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0051] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0052] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0053] This invention discloses a carton sealing machine using wet tape, as shown in the attached image. Figures 1 to 4 As shown, the carton sealing machine includes a conveyor 1, a gantry frame 2, an unwinding device 3, a tape feeding device 7, a tape cutting device 5, and a wetting device 4, as well as a control system. The gantry frame 2 includes columns 21 and a lifting frame 23. Columns 21 are fixed to both sides of the conveyor 1, and the lifting frame 23 is connected between the two columns 21 and moves relative to the conveyor 1. The lifting frame 23 is also equipped with the unwinding device 3, the tape feeding device 7, the tape cutting device 5, and the wetting device 4 for sealing the upper surface of the carton conveyed to the gantry frame 2 with tape. Notably, dust covers 232 are installed on both sides of the lifting frame 23, and the tape feeding device 7, the tape cutting device 5, and the wetting device 4 are all housed within the dust covers 232.

[0054] As attached Figure 5 and 6As shown, each of the two columns 21 is equipped with a vertically sliding first slider 24. Specifically, a vertically arranged first guide rod 241 can be fixed inside the column 21. A linear bearing is nested inside the first slider 24, and the linear bearing inside the first slider 24 is adapted to fit outside the first guide rod 241, thereby restricting the first slider 24 to slide only vertically relative to the column 21 and the conveyor 1. A crossbeam 22 is also provided between the two columns 21 of the gantry frame 2. The two ends of the crossbeam 22 are respectively fixed to the first slider 24 of the two columns 21. The lifting frame 23 and the crossbeam 22 are fixedly connected to form a structure in which the unwinding device 3, the feeding device 7, the cutting device 5, and the wetting device 4 are lifted relative to the conveyor 1. In this embodiment, the fixing structure can be fixed by threaded connection of through bolts. With this structure, the height of the lifting frame 23 relative to the conveyor 1 can be adjusted according to the height of the boxes, so that the unwinding device 3, the tape feeding device 7, the tape cutting device 5, and the wetting device 4 can rise or fall to a height close to the box, thereby enabling the sealing treatment of boxes of different heights with wet tape. Therefore, it has wide applicability. Preferably, a scale is also fixed on the side of one of the columns 21 of the gantry frame 2 for observing the adjusted height of the lifting frame 23 relative to the conveyor 1, allowing the staff to intuitively observe the required adjustment height.

[0055] The lifting and lowering methods for driving the two first sliders 24 can be as shown in the attached figure. Figure 6 As shown, the side of the first slider 24 is fixed to a first support 251 inside the column 21, and a vertically arranged first lead screw 252 is also connected inside the column 21. Bearings are fixed at both ends of the first lead screw 252 inside the column 21. The two ends of the first lead screw 252 are respectively embedded and fixed to the inner rings of the two bearings, thereby restricting the first lead screw 252 to rotate only within the column 21. The first lead screw 252 also spirally passes through the first slider 24, so that the rotation of the first lead screw 252 can drive the first slider 24 to rise or fall. In addition, the upper end of the first lead screw 252 passes through the bearing and is fixed to a first sprocket 253, and the first sprockets 253 at the upper ends of the first lead screws 252 on both columns 21 are engaged with the first chain 254. During operation, rotating one of the first lead screws 252 causes the first chain 254 to drive the other first lead screw 252 to rotate synchronously and in the same direction, thereby causing the first sliders 24 inside the two columns 21 to rise or fall synchronously, thus realizing the lifting of the lifting frame 23 relative to the conveyor 1. Furthermore, the first lead screw 252 can be rotated by fixing a motor to the top of the column 21, or by fixing a first handle 255 to the top of one of the first lead screws 252, and rotating the first handle 255 will drive the first lead screw 252 to rotate.

[0056] Continue to refer to the appendix Figure 1 and 2 Both sides of the conveyor 1 are provided with strip-shaped limiting mechanisms 12. The structure of the limiting mechanism 12 can be as shown in the attached figure.Figure 9 The belt conveyor shown has conveyor belt 121 positioned on the side. The boxes to be packaged are restricted to move between the conveyor belt 121 of two limiting mechanisms 12, keeping the boxes conveyed in the middle below the lifting frame 23. The two limiting mechanisms 12 move synchronously towards the middle or sides of the conveyor 1, that is, the two limiting mechanisms 12 move in a mirror image relative to the conveyor 1, to adjust for boxes of different widths. Preferably, a scale is fixed to the side of one of the limiting mechanisms 12 facing outward from the conveyor 1, for observing the distance between the adjusted limiting mechanism 12 and the outer edge of the conveyor 1, allowing the operator to more intuitively observe the width formed between the two limiting mechanisms 12 after adjustment.

[0057] Please refer to the appendix. Figures 7 to 9 The conveyor 1 is a roller conveyor. Both ends of the limiting mechanism 12 are fixedly connected to columns 123. The columns 123 pass through the gap between the two rollers of the conveyor 1 and are then fixed to a second support 132. The second support 132, like the first support 251, can be a nut support adapted to the lead screw in the prior art. Both ends of the conveyor 1 are connected to a second lead screw 131 below the rollers. Specifically, both ends of the second lead screw 131 are fixed to two first bearing seats, which are respectively fixed to both sides within the frame 11, thus restricting the second lead screw 131 to rotate axially within the frame 11. The two ends of the second lead screw 131 are provided with external threads in opposite directions. These external threads are threadedly connected to the second supports 132 at the same end of the two limiting mechanisms 12, so that when the second lead screw 131 rotates, it can simultaneously move the two second supports 132 towards the center or sides of the conveyor 1.

[0058] Continue to refer to the appendix Figures 7 to 9 Each of the two second lead screws 131 has a second sprocket 133 fixed at one end inside the frame 11. Both second sprockets 133 are engaged with a second chain 134, which drives the two second lead screws 131 to rotate synchronously. Furthermore, one end of one of the second lead screws 131 extends out of the frame 11 and is fixedly connected to a second handle 255. During operation, rotating the second handle 255 drives the two second lead screws 132 to rotate synchronously, thereby causing the two limiting mechanisms 12 to move synchronously in the middle or to the sides. This operation method is very convenient.

[0059] As attached Figure 10 and 11As shown, the unwinding device 3 includes an outer shaft 31, a central shaft 32, and a protective cover 34. The lifting frame 23 has a fixed bearing housing 33, within which a first bearing 331 is fixed. The outer shaft 31 and the inner ring of the first bearing 331 are connected with an interference fit, allowing the outer shaft 31 to rotate relative to the lifting frame 23. The protective cover 34 is also fixed to the lifting frame 23 via the bearing housing 33. Specifically, the protective cover 34 includes a first protective plate 342 and an outer cover 341 and a second protective plate 343 respectively disposed on both sides of the first protective plate 342. The outer cover 341 is fixed to the bearing housing 33, and the first protective plate 342 and the outer cover 341 are fixed together, thus fixing the first protective plate 342 to the lifting frame 23. The outer shaft 31 passes through the first protective plate 342 and is fixedly connected to the first bearing 331 within the bearing housing 33, thereby creating a structure where the outer shaft 31 rotates relative to the lifting frame 23. An expansion sleeve 311 is fixed outside the outer shaft 31. The through hole in the center of the film roll 9 is fixed on the cylindrical surface outside the expansion sleeve 311, thereby fixing the film roll 9 relative to the outer shaft 31 and enabling the film roll 9 to rotate relative to the lifting frame 23.

[0060] Continue to refer to the appendix Figure 10 and 11The second protective plate 343 is fixed to the other end of the outer shaft 31 relative to the first protective plate 342, so that the film roll 9 is located between the first protective plate 342 and the second protective plate 343, thereby protecting the film roll 9 and preventing it from falling. The structure of fixing the second protective plate 343 to the other end of the outer shaft 31 can be achieved by installing a clamping part 344, a tapered sleeve handle 346, and a central shaft 32. One end face of the central shaft 32 is fixed relative to the unwinding frame 1 by being fixedly connected to the bearing seat 33, and the other end of the central shaft 32 passes through the outer shaft 31. Specifically, one end face of the central shaft 32 is fixed relative to the lifting frame 23 by being fixedly connected to the bearing seat 36, and the other end of the central shaft 32 passes through the outer shaft 31. The clamping part 344 is fixed in the middle of the second protective plate 343, and a connecting hole 345 is provided in the center of the clamping part 344. The connecting hole 345 is adapted to hold the end of the central shaft 32 that protrudes from the outer shaft 31. A groove 3441 is provided on one side of the clamping part 344. The groove 3441 can be formed by making a horizontal or oblique cut from one side of the clamping part 344 to extend to the connecting hole 345. The clamping part 344 is also provided with a notch 3442 along its radius line. The notch 3442 is connected to the connecting hole 345 and the groove 3441, so that the part of the clamping part 344 facing away from the second protective plate 343 after being separated by the groove 3441 and the notch 3442 forms a clamping piece 3443. The clamping piece 3443 forms a structure that can elastically swing relative to the notch 3442. When the connecting hole 345 is fitted onto the end of the central shaft 32, the end of the central shaft 32 can be clamped in the connecting hole 345 by swinging the clamping piece 3443 to one side of the notch 3442. This fixes the clamping part 344 and the central shaft 32 to each other, thereby fixing the second protective plate 343 relative to the central shaft 32 and realizing the installation and fixation of the second protective plate 343.

[0061] Continue to refer to the appendix Figure 12 and 13The clamping part 344 is provided with a threaded hole 3444, and the tapered sleeve handle 346 is adapted to be screwed into the threaded hole 3444. The clamping piece 3443 is provided with a moving hole 3445 on one side of the notch 3442. The moving hole 3445 and the threaded hole 3444 are eccentric (i.e., the centers are not in the same position). The tapered sleeve handle 346 is also provided with a guide portion 3461 of a tapered structure. The guide portion 3461 is fixed to one end of the stud that is screwed into the threaded hole 3444. When the tapered sleeve handle 346 is screwed into the threaded hole 3444, the guide portion 3461 pushes against the side wall of the moving hole 3445, so as to drive the side of the clamping piece 3443 where the moving hole 3445 is located to move towards the other side of the notch 3442. When the tapered sleeve handle 346 is screwed into the threaded hole 3444 more tightly, the guide portion 3461 is embedded deeper into the moving hole 3445. Therefore, the clamping piece 3443 is driven to move to clamp the end of the central shaft 32 more tightly, thereby realizing the fixation of the second protective plate 343 relative to the central shaft 32. That is, the second protective plate 343 is fixed at the other end of the outer shaft 31 relative to the first protective plate 342, forming that the film 9 is provided with the first protective plate 342 and the second protective plate 343 at both ends of the outer shaft 31 for protection.

[0062] As attached Figure 14 and 15 As shown, the conveyor belt 7 includes an upper conveyor roller 71, a lower conveyor roller 72, an upper pressure plate 73, and a lower pressure plate 74. The lower pressure plate 74 is fixed to the side of the vertical plate 231 of the lifting frame 23, and the upper pressure plate 73 is located above the lower pressure plate 74. Both the upper pressure plate 73 and the lower pressure plate 74 have clearance gaps 701. The lower conveyor roller 72 is located below the lower pressure plate 74, and its upper surface passes through the clearance gap 701 of the lower pressure plate 74. The upper conveyor roller 71 is located above the upper pressure plate 73, and its lower surface passes through the clearance gap 701 of the upper pressure plate 73 and presses down on the lower conveyor roller 72. The conveyor belt 91 passes between the upper pressure plate 73 and the lower pressure plate 74, and also between the upper conveyor roller 71 and the lower conveyor roller 72.

[0063] Continue to refer to the appendix Figure 15 The belt feeding device 7 also includes a belt feeding motor 76 fixed on the other side of the vertical plate 231. The output shaft of the belt feeding motor 76 drives the lower conveyor roller 72 to rotate on the other side of the vertical plate 231 via a synchronous belt drive, so as to form as shown in the attached figure. Figure 22 The conveyor belt 91, which is pressed down by the upper conveyor roller 71 and adhered to the surface of the lower conveyor roller 72, is conveyed towards the tape cutting device 5.

[0064] Furthermore, both the upper pressure plate 73 and the upper conveying roller 71 oscillate relative to the lower pressure plate 74. The rotation structure can be such that a first swing shaft 731 is fixed to the end of the upper pressure plate 73, passing through the vertical plate 231. Limiting sleeves 732 are screwed to both ends of the first swing shaft 731 at both ends of the vertical plate 231, thereby restricting the first swing shaft 731 to rotate only relative to the vertical plate 231, thus restricting the upper pressure plate 73 to oscillate only relative to the lower pressure plate 74. (Continue referring to the appendix...) Figure 15 The upper conveyor roller 71 is connected to and rotates within the swing frame 75. A second swing shaft 751 is fixed to one side of the swing frame 75. The second swing shaft 751 passes through the vertical plate 231 and, like the first swing shaft 731, is restricted to rotate relative to the vertical plate 231. A swing arm 752 is fixed to the other side of the vertical plate 231 of the lifting frame 23 via the second swing shaft 751. The swing arm 752 swings relative to the lifting frame 23 around the second swing shaft 751 and is then fixed. The fixing method can be to fix the end of the swing arm 752 to the vertical plate 231 by threading screws. With the above structure, when it is necessary to pass the tape 91 through the gap between the lower pressure plate 74 and the upper pressure plate 73, the upper pressure plate 73 is flipped upward by swinging the swing arm 752, which drives the upper conveyor roller 71 upward, creating a larger gap between the upper pressure plate 73 and the lower pressure plate 74, facilitating the passing of the tape 91.

[0065] As attached Figure 16 and 17 As shown, the tape cutting device 5 includes a blade holder 51, a fixed blade 53, and a movable blade 52. The blade holder 51 is fixed to one side of the upright plate 231 of the lifting frame 23. The blade holder 51 is provided with a tape-passing opening 501 for the tape 91 to pass through. The fixed blade 53 and the movable blade 52 are respectively provided on both sides of the tape-passing opening 501. The fixed blade 53 is fixed inside the blade holder 51, and a slide block 54 is slidably connected inside the blade holder 51. The movable blade 52 is fixed to one end of the slide block 54 near the fixed blade 53, so that the movable blade 52 slides relative to the fixed blade 53 inside the blade holder 51, thereby cutting the tape 91 that has passed through the tape-passing opening 501.

[0066] Continue to refer to the appendix Figure 16 and 17The cutting device 5 also includes a cutting motor 561 for driving the movable blade 53 to slide, an eccentric wheel 562, and a rocker arm 564. The cutting motor 561 is fixed to the other side of the upright plate 231, and the output shaft of the cutting motor 561 fixes the eccentric wheel 562. An eccentric pin 563 is fixed to the position of the eccentric wheel 562 off-center. The rocker arm 564 is restricted to rotate relative to the blade holder 51 near the middle position. Specifically, a pin 5641 can be passed through the rocker arm and fixed to the blade holder 51, so that the rocker arm 564 rotates relative to the blade holder 51 with the pin 5641 as the axis. One end of the rocker arm 564 is restricted to rotate relative to the movable blade 53. The connection method can be that both ends of the rocker arm 564 are provided with oblong holes 5642, and the oblong hole 5642 at one end is sleeved on the pin 5641 fixed to the slide 54, so that one end of the rocker arm 564 rotates relative to the movable blade 53. The oblong hole 5642 at the other end of the swing arm 564 is fitted over the eccentric pin 563, restricting the other end of the swing arm 564 to move relative to the eccentric pin 563. When the control system controls the tape cutting motor 561 to work, the tape cutting motor 561 drives the eccentric wheel 562 to rotate, thereby driving the eccentric pin 563 to rotate. The rotation of the eccentric pin 563 pushes the oblong hole 5642 of the swing arm 564 to swing up and down, so that the swing arm 564 drives the movable blade 53 to slide towards or away from the fixed blade 53, thereby cutting the tape 91 and making space for the tape 91 to pass through the tape feeding port 501 and continue to be conveyed forward.

[0067] As attached Figures 18 to 19 As shown, the wetting device 4 includes a second water tank 43 and a wetting roller 44. The second water tank 43 is fixed to one side of the vertical plate 231 of the lifting frame 23 and is filled with water. One end of the wetting roller 44 is connected to one side of the vertical plate 231 and rotates, and one side of the wetting roller 44 is immersed in the water in the second water tank 43. The other end of the vertical plate 231 is connected to a wetting motor 46. The wetting motor 46 drives the wetting roller 44 to rotate on the second water tank 43 through a synchronous belt drive structure, forming an active rotation mode of the wetting roller 44, so that the surface of the wetting roller 44 is kept wet. When the tape 91 is conveyed to the wetting roller 44, the tape 91 is automatically wetted to form a wet tape.

[0068] Preferably, a heating plate (not shown in the figure) that can generate heat is attached to the bottom surface of the second water tank 43. The heating plate can be a silicone rubber electric heating plate. Heating the second water tank 43 by the heating plate can prevent the water in the second water tank 43 from freezing in a cold environment.

[0069] Continue to attach Figure 18 and 19The water-wetting device 4 also includes a first water tank 42 and a water bottle 41 located on the other side of the upright plate 231. The first water tank 42 and the second water tank 43 are connected by a connecting pipe 421, allowing water in the first water tank 42 to flow into the second water tank 43. Preferably, the connecting pipe 421 can be a flexible hose. A one-way valve 411 is installed at the mouth of the water bottle 41, allowing one-way flow from inside the water bottle 41 to the outside. A water replenishment rack 45 is also provided on the other side of the upright plate 231, which can be fixed to the upright plate 231 or the gantry frame 2. The water bottle 41 is placed upside down on the water replenishment rack 45, thereby keeping the water bottle 41 with its mouth facing downwards within the first water tank 42. In this state, the water in the water bottle 41 flows to the first water tank 42 through the one-way valve 411. When the water level in the first water tank 42 reaches the outlet of the one-way valve 411, the water level in the first water tank 42 is maintained at the position of the outlet of the one-way valve 411 due to atmospheric pressure. Similarly, the second water tank 43 is also kept at the same water level.

[0070] In addition, several pressure plates 47 are fixed above the wet roller 44. The upper part of the pressure plates 47 is an arc-shaped structure coaxial with the wet roller 44. Each pressure plate 47 can be connected by a first fixing rod 471 to form a fixed whole. Several guide plates 48 are also provided below the side of the wet roller 44 facing away from the tape cutting device 5. Each guide plate 48 can be connected by a second fixing rod 481 to form a fixed whole. Both the second fixing rod 481 and the first fixing rod 471 can be fixed to one side of the vertical plate 231 of the lifting frame 23. During operation, the tape 91 is passed through the gap between the pressure plate 47 and the wet roller 44, so that the pressure plate 49 can restrict the tape 91 from being too close to the wet roller 44, preventing the tape 91 from being too loose and unable to contact the wet roller 44. This ensures that the tape 91 is kept attached to the upper surface of the wet roller 44 during transport, guaranteeing the wetting effect of the tape 91. It also allows the tape 91 to be smoothly transported downwards along the guide plate 48.

[0071] Furthermore, even without the wet motor 47 driving the wet roller 44, the wet roller 44 can still rotate due to friction between the conveyor belt 91 and the wet motor 47 during transport, forming a passive rotation mode for the wet roller 44. Further, the wet roller 44 can be made of stainless steel smooth roller, stainless steel mesh roller, or sponge roller. In the active rotation mode driven by the wet motor 47, the wet roller 44 can be a stainless steel smooth roller or a stainless steel mesh roller; while in the passive rotation mode, the wet roller 44 can be a sponge roller.

[0072] Please refer to the appendix. Figure 20As shown, the present invention also includes a pressing device 8, which comprises two pivotally connected torsion frames 81 and guide rollers 82 at the ends of both torsion frames 81. The lifting frame 23 connects the two torsion frames 81 to one side of the upright plate 231, and each torsion frame 81 is connected to a guide roller 82 at its end near the second water tank 43. A third swing shaft 83 is fixed to the side of the upright plate 231 connected to the second water tank 43, and one end of each torsion frame 81 is connected to the third swing shaft 83 for rotation, causing the two torsion frames 81 to swing relative to each other. Further, two torsion springs 84 are fitted onto the third swing shaft 83, with both ends of the torsion springs 84 extending into the two torsion frames. The torque of the torsion springs 84 keeps the two torsion frames 81 in an open state relative to the third swing shaft 83. Additionally, a stop bar 85 is fixed to the upper torsion frame 81 on the upright plate 231. This stop bar 85 blocks the upper torsion frame 81, causing the lower torsion frame 81 to swing downwards under the torque of the torsion springs 84. When the wet tape extends 23 times beyond the lifting frame, as shown in the attached image. Figure 22 As shown, the side facing away from the starting end of the conveyor 1 is attached to the guide roller 82 for conveying, forming two guide rollers 82 to guide and limit the wet tape 92. In this structure, the upper guide roller 82 can play a guiding role, and the lower guide roller 82 can press the wet tape 92 downward, so that the wet tape 92 is pressed against the box under the conveyor gantry 2, thereby allowing the wet tape 92 to adhere downward to the box.

[0073] With the above structure, the tape 91 pulled out from the unwinding device 3 passes between the upper conveyor roller 71 and the lower conveyor roller 72, then sequentially passes through the tape-passing opening 501 of the tape-cutting device 5, around the wet roller 44 of the wet-wetting device 4, and extends out below the lifting frame 23. During operation, the tape-cutting device 5 cuts the tape 91, causing the cut tape 91 to be wetted by the wet roller 44 and extend out below the lifting frame 23. When the box to be sealed is transported to the position of the gantry 2, the sealing plates on both sides of the box are kept flat on the bottom plane of the lifting frame 23 to seal the top of the box. After the box moves to the position of the extended wet tape 92, the wet tape 92 sticks to the gap between the two sealing plates, and moves with the box, thus realizing the process of sealing the box by sticking the wet tape 92, which has been cut and wetted by the movable blade 52.

[0074] In addition, a distance sensor 565 is fixed to the vertical plate 231 of the lifting frame 23, outside the side of the eccentric wheel 562, for example, attached to... Figure 17The eccentric pin 563 is located below the eccentric wheel 562, and the distance sensor 565 senses the position of the eccentric pin 563. The control system receives the signal from the distance sensor 565 to control the cutting motor 561 to pause. Specifically, when the eccentric pin 563 rotates downward to a position below the eccentric wheel 562, it triggers the distance sensor 565. The distance sensor 565 sends a signal to the control system, which then controls the cutting motor 561 to drive the eccentric wheel 562 to rotate until the movable blade 53 moves away from the fixed blade 52 via the rocker arm 564, at which point it stops, completing the resetting of the cutting device and awaiting the next cutting command. Additionally, it is worth mentioning that a sensor (not shown in the figures) can also be configured at the position of the gantry 2 to sense the box to be packaged and send a signal to the control system. The control system can be a PLC controller, and after receiving the signal triggered by the sensor, the control system controls the feeding motor 76, the cutting motor 561, and the wet motor 46 to operate.

[0075] In addition, as attached Figure 21 and 24 As shown, a clearance gap 101 is formed below the lifting frame 23 corresponding to the lower part of the conveyor 1. The frame 11 of the conveyor 1 is also equipped with an unwinding device 3, a feeding device 7, a cutting device 5, a wetting device 4, and a pressing device 8. In the frame 11 of the conveyor 1, the tape 91 pulled out by the unwinding device 3 passes between the upper conveyor roller 71 and the lower conveyor roller 72, then sequentially passes through the threading opening of the cutting device 5, around the wetting roller 44 of the wetting device 4, and extends upward to form the clearance gap 101. The torsion frame 81 above the pressing device 8, under the torsion of the torsion spring 84, pushes the guide roller 82 upward, allowing the guide roller 82 to lift the wet tape 92 upward. During operation, the cutting device 5 cuts the tape 91, causing the cut tape 91 to be wetted by the wetting roller 44 and extend into the clearance gap 101. When the box to be sealed is conveyed to the position of gantry 2, the sealing plates on both sides of the bottom of the box are kept flat on the surface of conveyor 1 to seal the top of the box. After the box moves to the position of the extended wet tape 92, the wet tape 92 sticks to the gap between the two sealing plates and moves with the box. The wet tape 92 is cut by the movable blade 52 and then wetted to stick to the bottom surface of the box to form a sealing process. In this way, the top and bottom sides of the box conveyed to the position of gantry 2 can be sealed with tape at the same time, which is very convenient and helps to improve the sealing efficiency.

[0076] Please refer to the appendix. Figure 23As shown, a first slide 61 and a second slide 62 are also provided inside the frame 11, and both the first slide 61 and the second slide 62 can move relative to the side of the frame 11. The unwinding device 3 located inside the frame 11 is connected to the first slide 61, while the tape feeding device 7, tape cutting device 5, wettability device 4, and tape pressing device 8 located inside the frame 11 are connected to the second slide 62. The water replenishment rack 45 of the wettability device 4 located inside the frame can be fixed to the outer side of the frame 11 to facilitate water replacement of the water bottle 41.

[0077] The first carriage 61 is an attachment. Figure 23 The T-shaped structure shown has its bearing seat 33 of the unwinding device 6 within the frame 11 fixed below the middle position of the first slide 61. Second sliders 632 are fixed to both ends of the first slide 61. Two second guide rods 631 are fixed inside the frame 11, passing through the two second sliders 632 respectively, thus restricting the first slide 61 to slide linearly only along the second guide rods 631 relative to both sides of the frame 11. A pull rod 65 is fixed to one end of the first slide 61, extending beyond one side of the frame 11. When it is necessary to push or pull the first slide 61, the end of the pull rod 65 can be pulled or pushed from outside the frame 11, making operation relatively convenient. (See attached diagram.) Figure 25 One end of the pull rod 65 that extends out of one side of the frame 11 has a recessed annular groove 651 on the annular surface near the end. A rotatable snap-fit ​​member 66 is connected to the side of the pull rod 65 outside the frame 11. The snap-fit ​​member 66 has a snap-fit ​​groove 661. When the snap-fit ​​member 66 is rotated until the snap-fit ​​groove 661 is engaged outside the annular groove 651 of the pull rod 65, the pull rod 65 is restricted, preventing the pull rod 65 from moving, thereby preventing the first carriage 61 and the unwinding device 6 inside the frame 11 from moving.

[0078] The second carriage 62 is an accessory. Figure 23 The flat plate structure shown has guide sleeves 642 fixed at both ends of the second carriage 62. Two third guide rods 641 are fixed inside the frame 11, and the two third guide rods 641 respectively adapt to and pass through the two guide sleeves 642, thereby restricting the second carriage 62 to slide only linearly along the third guide rods 641 relative to both sides of the frame 11. (See attached diagram.) Figure 24 In the pressing device 8 located in the frame 11, the lower torsion frame 81 is blocked by a stop bar (not shown in the figure) fixed on the side of the second slide 62, so that the upper torsion frame 81 swings upward under the torsion of the torsion spring 84 until it passes through the clearance gap 101. By passing the torsion frame 81 through the clearance gap 101, the second slide 62 can be restricted from sliding relative to the second guide rod 641, thus forming the positioning of the second slide 62.

[0079] With the above structure, when film 9 needs to be replaced, the torsion frame 81, which protrudes upward beyond the clearance gap 101, is pressed down into the frame 11, and then the second carriage 62 is pushed to the side near the frame 11. Afterwards, the locking piece 66 is flipped over and the pull rod 65 is pulled out to move the first carriage 61 to the side near the frame 11. Compared with the method of changing film 9 by drilling into the frame 11, changing film 9 at the side of the frame 11 is more convenient. After changing film 9, the first carriage 61 is pushed into the frame 11 until the torsion frame 81 protrudes beyond the clearance gap 101. Then, the pull rod 65 is pushed into the frame 11 to move the first carriage 61 into the frame 11. Then, the locking piece 66 is rotated until the locking groove 661 is locked outside the annular groove 651 of the pull rod 65, thus restricting the pull rod 65 and preventing the first carriage 61 and the unwinding device 6 in the frame 11 from moving. Therefore, the structure of the present invention also allows for easy replacement of the film roll 9 located below the frame 11.

[0080] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A carton sealing machine using wet tape, characterized in that, The carton sealing machine includes: A conveyor for conveying boxes to be packaged, and a first carriage is also provided inside the frame of the conveyor, the first carriage being movable relative to the side of the frame; A gantry frame, comprising columns and a lifting frame, wherein the columns are fixed on both sides of the conveyor, and the lifting frame is connected between the two columns and moves relative to the conveyor. An unwinding device is connected to the first carriage. The unwinding device includes an outer shaft that is connected to one side of the lifting frame and rotates. The film roll is sleeved on the outer shaft, so that the film roll is fixed relative to the outer shaft. The belt feeding device includes an upper conveyor roller, a lower conveyor roller, and a belt feeding motor. The upper conveyor roller and the lower conveyor roller are both connected to the lifting frame for rotation. The belt feeding motor is fixed to one side of the lifting frame and drives the lower conveyor roller to rotate. A tape cutting device, comprising a knife holder and a movable blade, wherein the knife holder is fixed to the lifting frame, the knife holder is provided with a tape threading opening, and the movable blade moves relative to the tape threading opening; A water-wetting device, comprising a second water tank and a water-wetting roller, wherein the second water tank is fixed to the lifting frame and contains water, and the water-wetting roller is connected to the second water tank and rotates, with one side of the water-wetting roller immersed in the water in the second water tank; The tape pulled from the unwinding device passes between the upper and lower conveyor rollers, then sequentially passes through the movable blade of the tape cutting device, around the wet roller of the wettability device, and extends out from under the lifting frame. One end of the first carriage is fixed with a pull rod, which extends out of one side of the frame. The end of the pull rod outside the frame has a recessed annular groove near its end. A rotatable locking member is connected to the side of the pull rod outside the frame. The locking member has a slot. When the locking member is rotated until the slot is engaged outside the annular groove of the pull rod, the first carriage is restricted.

2. A carton sealing machine using wet tape as described in claim 1, characterized in that: Both columns are equipped with vertically sliding first sliders. The gantry frame has a crossbeam between the two columns. The two ends of the crossbeam are respectively fixed to the two first sliders. The lifting frame and the crossbeam are fixedly connected.

3. A carton sealing machine using wet tape as described in claim 2, characterized in that: The column is also connected to a vertically arranged first lead screw, which is restricted to rotating only within the column. The first lead screw spirally passes through the first slider. A sprocket is fixed to the upper end of the first lead screw, and the sprockets at the upper ends of the first lead screws of both columns are engaged with the same chain.

4. A carton sealing machine using wet tape as described in claim 1, characterized in that: The conveyor is equipped with strip-shaped limiting mechanisms on both sides, which restrict the movement of the boxes to be packaged between the two limiting mechanisms, and the two limiting mechanisms move synchronously toward the middle or sides of the conveyor.

5. A carton sealing machine using wet tape as described in claim 4, characterized in that: The conveyor is a roller conveyor. Both ends of the limiting mechanism are fixed with connecting columns. The connecting columns pass through the gap between the two rollers of the conveyor and then fix a second support. Both ends of the conveyor are connected to a second lead screw below the roller. The two ends of the second lead screw are provided with external threads in opposite directions. The two external threads are respectively threaded to the second support at the same end of the two limiting mechanisms.

6. A carton sealing machine using wet tape as described in claim 5, characterized in that: Both second lead screws are fixed with second sprockets inside the frame of the conveyor, and both second sprockets are engaged with the second chain.

7. A carton sealing machine using wet tape as described in claim 5 or 6, characterized in that: One end of the second lead screw extends out of the frame of the conveyor and is fixedly connected to the second handle.

8. A carton sealing machine using wet tape as described in claim 1, characterized in that: The belt feeding device further includes an upper pressure plate and a lower pressure plate. The lower pressure plate is fixed to the lifting frame, and the upper pressure plate rotates relative to the lower pressure plate. Both the upper pressure plate and the lower pressure plate are provided with clearance gaps. The lower conveyor roller is located below the lower pressure plate, and the upper surface of the lower conveyor roller passes through the clearance gap of the lower pressure plate. The upper conveyor roller is located above the upper pressure plate, and the lower surface of the upper conveyor roller passes through the gap of the upper pressure plate. The belt passes between the upper pressure plate and the lower pressure plate and between the upper conveyor roller and the lower conveyor roller.

9. A carton sealing machine using wet tape as described in claim 1 or 8, characterized in that: The belt feeding device further includes a swing frame, on one side of which a second swing shaft is fixed. The second swing shaft passes through the lifting frame and is restricted from rotating relative to the lifting frame. On the other side of the lifting frame, a swing arm is fixed to the second swing shaft. The swing arm swings relative to the lifting frame with the second swing shaft as its axis and is then fixed.

10. A carton sealing machine using wet tape as described in claim 1, characterized in that: The sealing machine also includes a pressing device, which includes a torsion frame and guide rollers. The lifting frame has a third swing shaft fixed on one side connected to the second water tank. One end of each of the two torsion frames is connected to the third swing shaft for rotation. The guide rollers are connected to the ends of the two torsion frames near the second water tank. The side of the wet tape facing away from the starting end of the conveyor is attached to the two guide rollers. A torsion spring is sleeved on the third swing shaft. The two ends of the torsion spring extend into the two torsion frames respectively. The lifting frame has a stop bar fixed on the upper torsion frame. The stop bar blocks the upper torsion frame, causing the lower torsion frame to swing downward under the torsion force of the torsion spring.

Images