A sealing device and method for carton packaging

Abstract

The invention discloses a sealing device and method for carton packaging. The device comprises a base and a conveying roller, a conveying assembly with adjustable spacing is arranged on the conveying roller, an inverted U-shaped frame is fixedly arranged above the base, a sealing assembly is arranged in the inverted U-shaped frame, and the sealing assembly is installed on the inverted U-shaped frame through a lifting assembly. The sealing assembly comprises two side plates, the ends of the side plates are fixedly connected through front and rear cross bars, a main board is fixedly arranged at the bottom between the cross bars, a front pressure roller and a rear pressure roller are arranged at an opening in the middle of the main board, an annular groove is arranged in the middle of the front pressure roller, a tape conveying assembly is arranged above the front pressure roller, a third motor is fixedly arranged on the outer wall of the side plate, a cutting unit is arranged on the rotating shaft of the third motor, a cutting disc of the cutting unit extends into the annular groove to divide the tape, and the divided tape is rolled up and compacted by a rotating drum; the device divides the over-wide tape through the cutting unit, a part of the divided tape is used for box sealing, and the other part is rolled up and compacted for reuse, so as to avoid material waste and adapt to the sealing of boxes of different specifications.

Description

Technical Field

[0001] The present invention relates to the technical field of carton packaging, and in particular to a sealing device and method for carton packaging. Background Art

[0002] When sealing carton packaging, tape is mainly used to stick and fix the seams of the box. The specific method is to stick the tape to the seams with the sticky side facing the box, and strengthen the sealing strength by pressing it firmly. Since the specifications and sizes of cartons are different, the sealing position needs to be adjusted according to the specific size of the box. The traditional sealing method usually uses fixed-width tape for sealing operations.

[0003] Chinese patent document (publication number: CN114751022A) discloses a carton packaging tape sealing device, including a transmission frame for conveying cartons, a guide drive mechanism installed on the transmission frame, a mounting seat arranged above the transmission frame and capable of moving up and down, a tape sealing mechanism installed on the mounting seat for sealing the carton, and a pre-processing device arranged in front of the tape sealing mechanism for folding and pressing the carton packaging edge, wherein the pre-processing device includes a wide edge bending device for pressing the wide packaging edge of the carton, a pressing plate for pressing the narrow packaging edge of the carton, and a rear narrow edge bending device. The invention is a pre-processing device capable of folding and buckling the carton packaging edge, which can automatically buckle and press the packaging edge of the carton to be sealed, realize continuous operation, and have high work efficiency; it can also press down packaging edges of different lengths, with a wide range of adaptability and good pressing effect.

[0004] In the prior art, the box is sealed by sticking and fixing the seams of the box with tape. The tape usually used has a fixed width. When sealing a narrow box, the tape will exceed the sealing range, resulting in serious waste of the tape; or when sealing boxes of different widths, it is necessary to frequently stop the machine to replace tapes of other widths, which wastes time and is inefficient. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a sealing device and method for carton packaging. A cutting unit is provided to split the overly wide tape. Part of the split tape is used for sealing the box, and the other part of the tape is rolled up and compacted, which is convenient for reuse, avoids waste, saves time in replacing the tape, and improves work efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A sealing device for carton packaging comprises a base and a conveying roller, a conveying assembly is arranged on the conveying roller, an inverted U-shaped frame is fixedly arranged above the base, a sealing assembly is arranged inside the inverted U-shaped frame, and both sides of the sealing assembly are mounted on the inverted U-shaped frame through a lifting assembly.

[0008] The sealing assembly comprises two side plates, the ends of the two side plates are fixedly connected by a front cross bar and a rear cross bar respectively, a main board is fixedly arranged at the bottom between the front cross bar and the rear cross bar, an opening is arranged in the middle of the main board, a front pressing roller and a rear pressing roller are arranged at intervals at the bottom of the opening, the front pressing roller is rotatably mounted on the main board, a third gear is fixedly arranged at one end of the front pressing roller close to the side plate, a ring groove is arranged in the middle of the front pressing roller, a tape conveying assembly is arranged above the front pressing roller, and the tape conveying assembly guides and conveys the tape;

[0009] The outer wall of the side plate is fixedly provided with a third motor, a rotating shaft installed on the third motor penetrates through the side plate and extends into the interior, a sector-shaped rack is arranged on the outer periphery of the rotating shaft, the sector-shaped rack is fixedly installed on the inner wall of the side plate, and a cutting unit is arranged on the rotating shaft;

[0010] When the third motor drives the rotating shaft and the cutting unit away from the front pressure roller, the sealing assembly uses the full width of the tape for sealing; when the third motor drives the rotating shaft and the cutting unit close to the front pressure roller, the sealing assembly uses the divided width of the tape for sealing.

[0011] As a preferred technical solution of the present invention, the cutting unit includes a rocker arm, a rotating rod, a first gear, a second gear, a rotating drum and a cutting disc; the rocker arm is vertically fixed to the end of the rotating shaft, the rotating rod is sleeved on the other end of the rocker arm, the first gear is installed on the end of the rotating rod close to the side plate, and the first gear is engaged with the fan-shaped rack; the other end of the rotating rod is fixed to the rotating drum, and the cutting disc is fixed to the end of the rotating drum, and the cutting disc can extend into the annular groove; the second gear is fixed on the rotating rod, the second gear is located between the rocker arm and the rotating drum, and the second gear can detachably engage with the third gear.

[0012] As a preferred technical solution of the present invention, a longitudinal plate is arranged on the side of the main board close to the third motor, an arc-shaped groove is provided at the bottom of the longitudinal plate, a winding unit is arranged on the arc-shaped groove, and the winding unit comprises an arc-shaped plate formed by extending the arc-shaped groove to the outside of both sides of the longitudinal plate, arc-shaped teeth are fixedly arranged on the inner wall of one side of the arc-shaped plate close to the third motor, and a smooth curved surface is arranged on the inner wall of the other side of the arc-shaped plate.

[0013] As a preferred technical solution of the present invention, a through groove is provided at the bottom of the longitudinal plate, the through groove is located on one side of the front pressure roller, an I-plate is slidably installed inside the through groove, both sides of the top of the I-plate are connected to the longitudinal plate through a second spring, a blade is fixedly provided on the I-plate, the blade is arranged close to the front pressure roller and the axes of the two are parallel; a hinge seat is provided at the bottom of the I-plate, a touch rod is hinged on the hinge seat, a connecting plate is fixedly provided at the bottom end of the hinge seat to enable the touch rod to rotate between the vertical direction and the horizontal direction, and a reset pad is provided on the upper part of the hinge seat; a pressure plate is fixedly provided on the rotating shaft, the pressure plate and the rocker arm are radially spaced apart, a T-shaped contact plate is provided at the end of the pressure plate, and when the pressure plate presses the touch rod downward, it drives the blade to move downward to cut the tape.

[0014] As a preferred technical solution of the present invention, the conveying assembly includes a shell, a belt and a first motor. The shell is adjustably and symmetrically installed on the conveying roller. Rotating wheels are respectively installed inside the two ends of the shell, and the belt is installed on the rotating wheel. The first motor is installed at the bottom of one end of the shell, and the output end of the first motor is transmission-connected to the rotating wheel.

[0015] As a preferred technical solution of the present invention, the belt conveying assembly includes a first roller, a second roller, a third roller and a fourth roller. The first roller and the second roller are both installed above the longitudinal plate, the third roller and the fourth roller are installed side by side on the longitudinal plate, and the outer periphery of the fourth roller is provided with texture.

[0016] As a preferred technical solution of the present invention, both ends of the rear pressure roller are retractably mounted on the bottom of the main board via first springs.

[0017] As a preferred technical solution of the present invention, the lifting assembly includes a second motor and a threaded rod. Longitudinal grooves are provided on opposite surfaces of the columns on both sides of the inverted U-shaped frame. The second motor is fixedly installed on the top of the column on one side of the inverted U-shaped frame, and a threaded rod is installed on the output end of the second motor. The threaded rod penetrates the inverted U-shaped frame and extends into the interior of the longitudinal groove on one side, and a sliding rod is installed in the interior of the longitudinal groove on the other side; the side plate on one side is slidably connected to the sliding rod, and the side plate on the other side is screwed to the threaded rod.

[0018] As a preferred technical solution of the present invention, the lifting assembly further includes a position sensor, and the position sensor is used to detect the height position of the sealing assembly.

[0019] The method for sealing using the device comprises the following steps:

[0020] S1. Prepare the tape and adjust the height and width of the device: The tape is guided by four rollers so that the sticky surface faces the carton; start the second motor to drive the threaded rod to adjust the height position of the sealing assembly in the inverted U-shaped frame, and adjust the position of the left and right shells 13 to change the clamping width;

[0021] S2. When using wider tape:

[0022] S21, tape positioning: the third motor drives the rotating shaft and the cutting unit to rotate to a position away from the front pressure roller, so that the tape maintains a full width;

[0023] S22, initial pasting and compacting: When the carton reaches the front pressing roller, the sponge outer layer of the front pressing roller squeezes and pastes the full width of the tape; the carton continues to move forward to the rear pressing roller, and the rear pressing roller compacts the pasted tape under the action of the first spring;

[0024] S23, tape cutting: the top of the carton pushes the I-shaped plate and the blade upward, compressing the second spring, and the carton is released by the rear spring to make the blade fall down and cut;

[0025] S3. When using narrower tape:

[0026] S31, tape cutting: start the third motor to drive the rotating shaft and the swing arm to rotate, so that the first gear, the second gear, the rotating drum and the cutting disc on the swing arm rotate together around the rotating shaft to the front pressure roller. During this process: the first gear meshes with the sector rack to generate self-rotation, driving the rotating drum and the cutting disc to rotate together, the cutting disc extends into the annular groove to cut the tape, and the rotating drum abuts against the front section of the front pressure roller during the self-rotation process to reel up the cut tape;

[0027] S32, initial pasting and pressing and tightening: When the carton reaches the front pressing roller, the sponge outer layer of the front pressing roller squeezes and pastes the cut tape; the carton continues to move forward to the rear pressing roller, and the rear pressing roller presses the pasted tape under the action of the first spring to enhance the sealing strength;

[0028] S33, tape cutting: achieved through the following two modes,

[0029] S331, cutting of box tape: the top of the carton pushes the I-shaped plate and the blade upward, compressing the second spring. When the carton passes, the second spring is released to make the blade fall quickly and cut the tape on the box;

[0030] S332, cutting the tape on the rotating drum: the third motor controls the rotation of the rotating shaft, drives the pressing plate to make a circular motion, squeezes the contact rod through the T-type contact plate, drives the I-shaped plate and the blade downward to cut the tape on the rotating drum;

[0031] S34. Rewinding and compacting: When the drum rewinds the split tape, the shaft drives the cutting unit to revolve, and the second gear meshes with the arc-shaped teeth to produce self-rotation, so that the drum body and the inner wall of the arc-shaped plate rotate in contact with each other, and the inner wall of the arc-shaped plate compacts and tidies the rolled tape. The cutting disc is located at the edge of the arc-shaped plate to cut off the excess tape to obtain a compacted rolled tape, which is convenient for secondary use.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The carton packaging sealing device provided by the present invention adopts a base and a conveying roller as the basic supporting structure, an inverted U-shaped frame is arranged above the base to form a stable working space, and a sealing component capable of adapting to different tape sizes is installed inside; the core structure of the sealing component includes a front pressure roller and a rear pressure roller, wherein an annular groove is arranged on the front pressure roller, which forms a stable match with the innovatively designed cutting unit to achieve accurate segmentation of over-wide tapes; the device adopts an integrated segmentation and rewinding design, so that a part of the segmented tape is used for box sealing, and the other part is orderly rewound and reused, which effectively solves the problem of material waste caused by the fixed tape width in traditional sealing, and also avoids frequent shutdowns to replace tapes of other sizes that delay construction time.

[0034] 2. The cutting unit of the device of the present invention adopts structures such as a rocker arm, a rotating rod, a gear set and a cutting disc. The precise power provided by the servo motor is transmitted through the rotating shaft to realize the positioning movement of the cutting unit; when the tape is too wide, the cutting unit is controlled by the rotating shaft to move precisely to the front pressure roller, and the cutting disc extends into the annular groove of the front pressure roller to realize the rapid segmentation of the tape, and at the same time, the rotating drum synchronously rewinds the excess tape after segmentation at a matching speed; arc-shaped teeth are installed on the inner wall of the arc plate, so that the rotating drum can evenly compact the tape during the winding process, ensuring the density of the wound tape, which is convenient for subsequent recycling; the precise coordination of the cutting and winding structure with the front pressure roller not only realizes the waste-free segmentation of the tape, but also improves the secondary utilization value of the material through compaction and winding, and the material utilization rate reaches the optimal level.

[0035] 3. The blade of the device of the present invention cooperates with the hinge seat, the touch rod, the reset pad, the I-shaped plate, the pressure plate, the second spring and the T-shaped contact plate to realize two cutting modes: in the passive cutting mode, when the box passes, its top will push the I-shaped plate and the blade upward, compressing the second spring to store energy. When the box passes, the second spring releases energy, causing the blade to rebound downward quickly to cut the tape; in the active cutting mode, the third motor controls the rotation of the shaft to drive the pressure plate to make a circular motion, and the T-shaped contact plate on the pressure plate presses the touch rod downward, thereby driving the I-shaped plate and the blade to move downward to cut the tape on the drum. This design realizes precise cutting of the tape through two methods: spring drive and mechanical linkage. The spring drive method responds quickly and cuts cleanly; the mechanical linkage method realizes precise cutting, compact structure, coordinated cooperation of various components, and automatic reset function to ensure continuous working ability.

[0036] 4. The winding unit of the present invention is arranged at the arc groove opened at the bottom of the longitudinal plate, including an arc plate extending to the outside of both sides of the longitudinal plate, an arc tooth is fixed on the inner wall of one side of the arc plate, and a smooth curved surface is arranged on the inner wall of the other side; when the tape on the rotating drum is not completely rolled in and compacted, the rotating shaft drives the rotating drum, the cutting disc and the second gear to perform orbital motion together, and when the second gear is meshed with the arc tooth, it rotates by itself. At this time, the main body of the rotating drum and the inner wall of the arc plate rotate in contact with each other, and the unrolled tape is rolled up and compacted. At the same time, the cutting disc is located at the edge of the arc plate to cut off the excess tape. This design realizes the automatic winding and sorting of the tape through the coordination of gear meshing drive and arc surface compaction. The winding process is continuous and stable, the compaction effect is good, and the cutting is accurate to avoid tape waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The overall installation structure of the device of the present invention is three-dimensional Figure 1 ;

[0038] Figure 2 The overall installation structure of the device of the present invention is three-dimensional Figure 2 ;

[0039] Figure 3 A three-dimensional diagram of the structure of the cutting unit of the device of the present invention in a coordinated state;

[0040] Figure 4 A three-dimensional diagram of the internal structure of the sealing component of the device of the present invention;

[0041] Figure 5 A three-dimensional diagram of the internal disassembled structure of the sealing component of the device of the present invention;

[0042] In the figure: base 11; conveyor roller 12; housing 13; belt 14; first motor 15; inverted U-shaped frame 16; side plate 17; threaded rod 18; second motor 19; front crossbar 20; rear crossbar 21; longitudinal plate 22; longitudinal rod 23; front pressure roller 24; rear pressure roller 25; first roller 26; tape roll 27; second roller 28; third roller 29; fourth roller 30; tape 31; main board 32; first spring 33; Blade 34; rotating shaft 35; swing arm 36; rotating rod 37; first one-way bearing 38; first gear 39; second gear 40; rotating drum 41; cutting disc 42; sector rack 43; third gear 44; annular groove 45; arc plate 46; arc tooth 47; third motor 48; pressure plate 49; second one-way bearing 50; through groove 51; I-shaped plate 52; second spring 53; hinge seat 54; touch rod 55; reset pad 56. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0044] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] Figure 1-Figure 5 As shown in, a sealing device for carton packaging comprises a base 11 and a conveying roller 12, a conveying assembly is arranged on the conveying roller 12, an inverted U-shaped frame 16 is fixedly arranged above the base 11, a sealing assembly is arranged inside the inverted U-shaped frame 16, and both sides of the sealing assembly are installed on the inverted U-shaped frame 16 through a lifting assembly, the sealing assembly comprises two side panels 17, the ends of the two side panels 17 are fixedly connected by a front cross bar 20 and a rear cross bar 21 respectively, a main board 32 is fixedly arranged at the bottom between the front cross bar 20 and the rear cross bar 21, an opening is arranged in the middle of the main board 32, a front pressing roller 24 and a rear pressing roller 25 are arranged at intervals at the bottom of the opening, the front pressing roller 24 is rotatably mounted on the main board 32, and a third gear 4 is fixedly arranged at one end of the front pressing roller 24 close to the side panel 17 4. An annular groove 45 is provided in the middle of the front pressure roller 24, and a tape conveying assembly is arranged above the front pressure roller 24, and the tape conveying assembly guides and conveys the tape 31; a third motor 48 is fixedly arranged on the outer wall of the side plate 17, and a rotating shaft 35 installed on the third motor 48 penetrates the side plate 17 and extends into the interior, a fan-shaped rack 43 is arranged on the periphery of the rotating shaft 35, and the fan-shaped rack 43 is fixedly installed on the inner wall of the side plate 17, and a cutting unit is arranged on the rotating shaft 35; when the third motor 48 drives the rotating shaft 35 and the cutting unit away from the front pressure roller 24, the sealing assembly uses the full width of the tape 31 for sealing; when the third motor 48 drives the rotating shaft 35 and the cutting unit close to the front pressure roller 24, the sealing assembly uses the divided width of the tape 31 for sealing.

[0046] Among them, the conveying component can adjust the horizontal clamping spacing for boxes of different widths; the lifting component can adjust the vertical size of the sealing component for boxes of different heights; when the box enters the conveying component, the belt of the conveying component will drive the box to move inside the device, and the sealing component will use tape 31 to stick and seal the top seam of the box;

[0047] For the joints with larger box width, the full width of the tape 31 is used for sealing; for the joints with smaller box width, the tape 31 can be cut by the cutting unit and then pasted for sealing. The unused tape after cutting can be collected into a roll by the rotating drum 41, which is convenient for next use and avoids material waste.

[0048] When the full width of the adhesive tape 31 is used for sealing, the cutting unit rotates with the rotating shaft 35 to a position away from the front pressing roller 24, and the box is driven by the conveying assembly to move toward the inside of the device at the bottom of the sealing assembly. At this time, the free end of the adhesive tape 31 is located at the front pressing roller 24, and the outer periphery of the front pressing roller 24 is wrapped with sponge, which has a compressible deformation space, which is conducive to squeezing the adhesive tape for sticking, and the adhesive surface of the adhesive tape 31 faces the box;

[0049] When the box body approaches the front pressure roller 24, the front pressure roller 24 presses the tape to adhere to the seam of the box body, and under the action of the transmission component, the box body is driven to move into the inside of the device, and the tape roll 27 is driven to rotate and release the tape 31; the front end of the box body approaches the rear pressure roller 25 to squeeze the rear pressure roller 25 upward; wherein, the top of the rear pressure roller 25 is connected to the main board 32 through the second spring 53, and the second spring 53 applies a downward reaction force to the rear pressure roller 25, so that the rear pressure roller 25 can press and firmly adhere to the tape 31 that has been adhered to the box body during the rotation process, thereby enhancing the strength of the seal; wherein, under the action of the second spring 53, the rear pressure roller 25 in the normal state is lower than the upper plane of the box body, which is beneficial for the rear pressure roller 25 to press and firmly adhere to the tape 31 on the side of the box body, so that the contact surface between the sealing tape and the box body is adhered as a whole, thereby ensuring the adhesion strength of the seal.

[0050] When the cutting width of the adhesive tape 31 is used for sealing, the cutting unit rotates with the rotating shaft 35 to the position of the front pressure roller 24; the third motor 48 is started to drive the rotating shaft 35 and the swing rod 36 to rotate together, and the first gear 39, the second gear 40, the rotating drum 41 and the cutting disc 42 on the swing rod 36 rotate together around the rotating shaft 35. During this revolution, the first gear 39 meshes with the sector rack 43, and the first gear 39 rotates, and at the same time drives the rotating drum 41 and the cutting disc 42 to rotate together. The cutting disc 42 extends into the annular groove 45 to split the adhesive tape 31. During the rotation process, the rotating drum 41 abuts against the front section of the front pressure roller 24 and reels the split adhesive tape;

[0051] The first gear 39 eventually disengages from the sector rack 43 as it revolves, and at this time the second gear 40 and the third gear 44 mesh with each other for transmission. When the box enters the device for sealing, the split tape at one end away from the third gear 44 sticks and seals the box, and the split tape at the other end is rolled up on the rotating drum 41. When the box with the tape sticking to it moves toward the inside of the device, it drives the tape to move, and the movement of the tape drives the front pressure roller 24 to rotate, so that the third gear 44 meshes and drives the second gear 40, the rotating drum 41 and the cutting disc 42 to rotate together, the cutting disc 42 rotates the split tape 31, and the rotating drum 41 rotates to roll up the split tape. When the box moves to the rear pressure roller 25, the rear pressure roller 25 presses and firmly fixes the tape that has been stuck to the box during the rotation process, thereby enhancing the strength of the seal.

[0052] In the device, a keyway structure is used between the rotating drum 41 and the rotating rod 37, and a threaded connection is used between the cutting disc 42 and the top of the rotating rod 37, so that the rotating drum 41 after winding can be quickly disassembled and replaced.

[0053] A first one-way bearing 38 is disposed at the connection between the swing rod 36 and the rotating rod 37, and a second one-way bearing 50 is disposed at the connection between the first gear 39 and the rotating rod 37. Figure 3 As shown in the figure, when the first gear 39 rotates counterclockwise, the second one-way bearing 50 is locked to make the rotating rod 37 rotate together with the first gear 39, and the first one-way bearing 38 is idle at this time. On the contrary, when the first gear 39 rotates clockwise, the first gear 39 is idle; the second gear 40, the rotating drum 41 and the rotating rod 37 are all fixedly connected. When they rotate clockwise together, the first one-way bearing 38 and the swing rod 36 are locked to prevent the second gear 40 and the rotating drum 41 from rotating. In this process, the wound split tape is prevented from rotating in the reverse direction; the rotating drum 41 after winding the split tape revolves with the rotating shaft 35 ( Figure 3 When the tape 31 moves away from the front pressure roller 24 in a clockwise direction, the rotating drum 41 drags the tape 31 downward to the blade 34 for cutting.

[0054] Furthermore, the cutting unit includes a rocker arm 36, a rotating rod 37, a first gear 39, a second gear 40, a rotating drum 41 and a cutting disc 42; the rocker arm 36 is vertically fixed to the end of the rotating shaft 35, the rotating rod 37 is sleeved on the other end of the rocker arm 36, the first gear 39 is installed on the end of the rotating rod 37 close to the side plate 17, and the first gear 39 is engaged with the fan-shaped rack 43; the other end of the rotating rod 37 is fixed with a rotating drum 41, the end of the rotating drum 41 is fixed with a cutting disc 42, and the cutting disc 42 can extend into the inside of the annular groove 45; the second gear 40 is fixed on the rotating rod 37, the second gear 40 is located between the rocker arm 36 and the rotating drum 41, and the second gear 40 can detachably engage with the third gear 44.

[0055] Figure 4 and Figure 5As described above, the drum 41 after winding the split tape revolves along with the rotating shaft 35 ( Figure 4 , 5 When the front pressing roller 24 is moved counterclockwise in the middle, the pressing plate 49 rotates with the rotating shaft 35, and the T-shaped contact plate at the end of the pressing plate 49 presses the touch rod 55 downward, driving the I-shaped plate 52 and the blade 34 to move downward together, and the blade 34 moves downward to cut the tape 31; wherein, a reset pad 56 is provided on the upper part of the hinge seat 54, and when the I-shaped plate 52 rotates in the opposite direction, the touch rod 55 is pushed upward, and the touch rod 55 presses the reset pad 56 and then returns to a horizontal state, which is convenient for the next use.

[0056] Furthermore, a through slot 51 is provided at the bottom of the longitudinal plate 22, and the through slot 51 is located on one side of the front pressure roller 24. An I-shaped plate 52 is slidably installed inside the through slot 51. Both sides of the top of the I-shaped plate 52 are connected to the longitudinal plate 22 through a second spring 53. A blade 34 is fixed on the I-shaped plate 52, and the blade 34 is arranged close to the front pressure roller 24 and the axes of the two are parallel; a hinge seat 54 is provided at the bottom of the I-shaped plate 52, and a touch rod 55 is hinged on the hinge seat 54. A connecting plate is fixed at the bottom end of the hinge seat 54 to enable the touch rod 55 to rotate between the vertical direction and the horizontal direction, and a reset pad 56 is provided on the upper part of the hinge seat 54; a pressing plate 49 is fixed on the rotating shaft 35, and the pressing plate 49 and the rocker 36 are radially spaced apart. A T-shaped contact plate is provided at the end of the pressing plate 49. When the pressing plate 49 presses the touch rod 55 downward, it drives the blade 34 to move downward to cut the tape 31.

[0057] Figure 4 and Figure 5 As described in the figure, the I-plate 52 and the blade 34 are installed on the longitudinal plate 22 through the second spring 53 to achieve up and down reciprocating motion. In the process of taping the box, the I-plate 52 and the blade 34 are squeezed to the upper part by the top of the box. At this time, the second spring 53 is in a compressed state. When the box is separated from the I-plate 52 after the tape is taped, the blade 34 is quickly rebounded downward and extends out to cut the tape 31 under the reset action of the second spring 53.

[0058] Furthermore, a longitudinal plate 22 is provided on one side of the main board 32 close to the third motor 48, an arc-shaped groove is provided at the bottom of the longitudinal plate 22, a winding unit is provided on the arc-shaped groove, and the winding unit includes an arc-shaped plate 46 extending from the arc-shaped groove to the outside of both sides of the longitudinal plate 22, an arc-shaped tooth 47 is fixedly provided on the inner wall of one side of the arc-shaped plate 46 close to the third motor 48, and a smooth curved surface is provided on the inner wall of the other side of the arc-shaped plate 46.

[0059] Figure 3As described above, the tape cut off on the rotating drum 41 is not completely rolled in and compacted, and the rotating shaft 35 drives the rotating drum 41, the cutting disc 42 and the second gear 40 to revolve together. When the second gear 40 is engaged with the arc-shaped tooth 47, it also rotates. At this time, the main body of the rotating drum 41 and the inner wall of the arc-shaped plate 46 rotate to roll up and compact the unwound tape, and the cutting disc 42 is located at the edge of the arc-shaped plate 46 to cut off the excess tape; the cut tape is sorted to facilitate the next switching use.

[0060] Furthermore, the transmission assembly includes a shell 13, a belt 14 and a first motor 15. The shell 13 is adjustably and symmetrically mounted on the transmission roller 12. Rotating wheels are respectively mounted inside the two ends of the shell 13, and the belt 14 is mounted on the rotating wheels. The first motor 15 is mounted at the bottom of one end of the shell 13, and the output end of the first motor 15 is transmission-connected to the rotating wheel.

[0061] Figure 1 and Figure 2 As described in the figure, the outer surface of the belt 14 close to the box body is provided with anti-slip grooves to facilitate the clamping of the box body. The first motor 15 is started to drive the wheel to rotate, thereby driving the belt 14 to run and realize the clamping and transmission of the box body. The shells 13 on the left and right sides can move along the axial direction of the conveying roller 12, and a detachable clamping connector (not shown in the figure) is provided at the connection between the shell 13 and the conveying roller 12, such as a snap connection, to realize the adjustment of the width.

[0062] Furthermore, the tape conveying assembly includes a first roller 26, a second roller 28, a third roller 29 and a fourth roller 30, the first roller 26 and the second roller 28 are both installed above the longitudinal plate 22, the third roller 29 and the fourth roller 30 are installed side by side on the longitudinal plate 22, and the outer periphery of the fourth roller 30 is provided with texture.

[0063] Figure 1 As shown in the figure, the tape roll 27 is fixedly installed on the first roller 26, and the tape 31 is led out from the tape roll 27. The free end of the tape 31 goes around the second roller 28 from top to bottom, extends to the outside of the third roller 29, and then goes around from the bottom of the third roller 29 to the top, and finally passes through the top of the fourth roller 30 and extends downward to the front pressure roller 24, so as to facilitate the adhesive sealing connection of the box.

[0064] Furthermore, both ends of the rear pressure roller 25 are retractably mounted on the bottom of the main board 32 via first springs 33 .

[0065] Figure 1As described in the specification, the two sides of the opening of the main board 32 are respectively provided with a longitudinal plate 22 and a longitudinal rod 23, and notches are symmetrically provided on the longitudinal plate 22 and the longitudinal rod 23, and a transverse plate is arranged in the notch; columns are fixedly provided at the tops of both ends of the rear pressure roller 25, and the first springs 33 are sleeved on the columns, and the columns are vertically slidably penetrated in the transverse plate, the first spring 33 is located between the rear pressure roller 25 and the transverse plate, and a limit plate is fixedly provided on the top of the column.

[0066] When the box body approaches the front pressure roller 24, the front pressure roller 24 presses the tape to adhere to the seam of the box body, and under the action of the transmission component, the box body is driven to move into the inside of the device, and the tape roll 27 is driven to rotate and release the tape 31; the front end of the box body approaches the rear pressure roller 25 to squeeze the rear pressure roller 25 upward; wherein, the top of the rear pressure roller 25 is connected to the main board 32 through the second spring 53, and the second spring 53 applies a downward reaction force to the rear pressure roller 25, so that the rear pressure roller 25 can press and firmly adhere to the tape 31 that has been adhered to the box body during the rotation process, thereby enhancing the strength of the seal; wherein, under the action of the second spring 53, the rear pressure roller 25 in the normal state is lower than the upper plane of the box body, which is beneficial for the rear pressure roller 25 to press and firmly adhere to the tape 31 on the side of the box body, so that the contact surface between the sealing tape and the box body is adhered as a whole, thereby ensuring the adhesion strength of the seal.

[0067] Furthermore, the lifting assembly includes a second motor 19 and a threaded rod 18. Longitudinal grooves are provided on opposite surfaces of the columns on both sides of the inverted U-shaped frame 16. The second motor 19 is fixedly installed on the top of the column on one side of the inverted U-shaped frame 16, and the threaded rod 18 is installed on the output end of the second motor 19. The threaded rod 18 penetrates the inverted U-shaped frame 16 and extends into the interior of the longitudinal groove on one side, and a sliding rod is installed in the interior of the longitudinal groove on the other side; the side plate on one side is slidably connected to the sliding rod, and the side plate on the other side is screwed to the threaded rod 18.

[0068] Figure 1 As described in the specification, protrusions are fixed on the side panels on both sides, a threaded hole is provided in the protrusion close to the threaded rod 18 and is adapted to be installed with the threaded rod 18, and a light hole is provided in the protrusion close to the slide rod and is adapted to be installed with the slide rod. When the second motor 19 is started and the threaded rod 18 is driven to rotate, the two side panels 17 and the sealing assembly are moved up and down, so that the sealing assembly can be adjusted up and down according to different box heights.

[0069] Furthermore, the lifting assembly also includes a position sensor (not shown in the figure), which is used to detect the height position of the sealing assembly and transmit the detection signal to the control system (not shown in the figure) to achieve automatic height adjustment of the sealing assembly.

[0070] In this device, a control system is also installed, and the first motor 15, the second motor 19, the third motor 48 and the position sensor are all electrically connected to the control system. The first motor 15, the second motor 19 and the third motor 48 are all servo motors.

[0071] The method for sealing using the device comprises the following steps:

[0072] S1. Prepare the tape and adjust the height and width of the device: The tape 31 is guided by four rollers so that the sticky surface faces the carton; start the second motor 19 to drive the threaded rod 18 to adjust the height position of the sealing assembly in the inverted U-shaped frame 16, and adjust the positions of the left and right shells 13 to change the clamping width;

[0073] S2. When using wider tape:

[0074] S21, tape positioning: the third motor 48 drives the rotating shaft 35 and the cutting unit to rotate to a position away from the front pressure roller 24, so that the tape 31 maintains a full width;

[0075] S22, initial pasting and pressing and tightening: When the carton reaches the front pressing roller 24, the sponge outer layer of the front pressing roller 24 squeezes and pastes the full width of the tape 31; the carton continues to move forward to the rear pressing roller 25, and the rear pressing roller 25 presses the pasted tape under the action of the first spring 33;

[0076] S23, tape cutting: the top of the carton pushes the I-shaped plate 52 and the blade 34 to move upward, compressing the second spring 53, and the carton is released by the rear spring to cause the blade to fall and cut;

[0077] S3. When using narrower tape:

[0078] S31, tape cutting: start the third motor 48 to drive the rotating shaft 35 and the swing rod 36 to rotate, so that the first gear 39, the second gear 40, the rotating drum 41 and the cutting disc 42 on the swing rod 36 rotate together around the rotating shaft 35 to the front pressure roller 24. During this process: the first gear 39 meshes with the sector rack 43 to produce self-rotation, driving the rotating drum 41 and the cutting disc 42 to rotate together, and the cutting disc 42 extends into the annular groove 45 to cut the tape 31. During the self-rotation process, the rotating drum 41 abuts against the front section of the front pressure roller 24 to reel up the cut tape;

[0079] S32, initial pasting and pressing and tightening: When the carton reaches the front pressing roller 24, the sponge outer layer of the front pressing roller 24 squeezes and pastes the cut tape 31; the carton continues to move forward to the rear pressing roller 25, and the rear pressing roller 25 presses the pasted tape under the action of the first spring 33 to enhance the sealing strength;

[0080] S33, tape cutting: achieved through the following two modes,

[0081] S331, cutting the tape on the box body: the top of the carton pushes the I-shaped plate 52 and the blade 34 to move upward, compressing the second spring 53. When the carton passes, the second spring 53 is released to make the blade fall quickly and cut the tape on the box body;

[0082] S332, cutting the tape on the rotating drum: the third motor 48 controls the rotating shaft 35 to rotate, driving the pressing plate 49 to make a circular motion, squeezing the contact rod 55 through the T-shaped contact plate, driving the I-shaped plate 52 and the blade 34 to cut the tape on the rotating drum downward;

[0083] S34, winding and compacting: When the rotating drum 41 is winding the split tape, the rotating shaft 35 drives the cutting unit to revolve, and the second gear 40 engages with the arc-shaped teeth 47 to produce self-rotation, so that the main body of the rotating drum 41 and the inner wall of the arc-shaped plate 46 rotate in contact, and the inner wall of the arc-shaped plate 46 compacts and tidies the wound tape. The cutting disc 42 is located at the edge of the arc-shaped plate 46 to cut off the excess tape to obtain a compacted wound tape, which is convenient for secondary use.

[0084] The present invention illustrates the technical concept of the present invention through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. A sealing device for carton packaging, comprising a base (11) and a conveying roller (12) on which a carton body is placed, a conveying assembly being arranged on the conveying roller (12), an inverted U-shaped frame (16) being fixedly arranged above the base (11), a sealing assembly being arranged inside the inverted U-shaped frame (16), and two sides of the sealing assembly being mounted on the inverted U-shaped frame (16) via a lifting assembly, characterized in that: The sealing assembly comprises two side plates (17), the ends of the two side plates (17) are fixedly connected via a front cross bar (20) and a rear cross bar (21), a main plate (32) is fixedly arranged at the bottom between the front cross bar (20) and the rear cross bar (21), an opening is arranged in the middle of the main plate (32), a front pressing roller (24) and a rear pressing roller (25) are arranged at intervals at the bottom of the opening, the front pressing roller (24) is rotatably mounted on the main plate (32), and a third pressing roller (25) is fixedly arranged at one end of the front pressing roller (24) close to the side plate (17). gear (44), a ring groove (45) is provided in the middle of the front pressure roller (24), a tape conveying assembly is arranged above the front pressure roller (24), and the tape conveying assembly guides and conveys the tape (31); a third motor (48) is fixedly arranged on the outer wall of the side plate (17), a rotating shaft (35) installed on the third motor (48) penetrates the side plate (17) and extends into the inside, a fan-shaped rack (43) is arranged on the outer periphery of the rotating shaft (35), and the fan-shaped rack (43) is fixedly installed on the inner wall of the side plate (17), and the rotating shaft (3 5) is provided with a cutting unit; when the third motor (48) drives the rotating shaft (35) and the cutting unit away from the front pressure roller (24), the sealing component uses the full width of the adhesive tape (31) for sealing; when the third motor (48) drives the rotating shaft (35) and the cutting unit close to the front pressure roller (24), the sealing component uses the width of the adhesive tape (31) after it is divided for sealing, and the cutting unit includes a swing rod (36), a rotating rod (37), a first gear (39), a second gear (40), A rotating drum (41) and a cutting disc (42); a swing rod (36) is vertically fixed to the end of the rotating shaft (35); a rotating rod (37) is sleeved on the other end of the swing rod (36); a first gear (39) is installed on the end of the rotating rod (37) close to the side plate (17); the first gear (39) engages with a sector-shaped rack (43); a rotating drum (41) is fixed to the other end of the rotating rod (37); a cutting disc (42) is fixed to the end of the rotating drum (41); and the cutting disc (42) can extend into the interior of the annular groove (45);A second gear (40) is fixedly provided on the rotating rod (37), the second gear (40) being located between the swing rod (36) and the rotating drum (41), the second gear (40) being detachably meshed with the third gear (44), a longitudinal plate (22) being provided on the main board (32) on a side close to the third motor (48), an arc-shaped groove being provided at the bottom of the longitudinal plate (22), a winding unit being provided on the arc-shaped groove, the winding unit comprising an arc-shaped plate (46) extending from the arc-shaped groove to the outside of both sides of the longitudinal plate (22), an arc-shaped tooth (47) being fixedly provided on the inner wall of one side of the arc-shaped plate (46) close to the third motor (48), a smooth curved surface being provided on the inner wall of the other side of the arc-shaped plate (46), a through groove (51) being provided at the bottom of the longitudinal plate (22), the through groove (51) being located on one side of the front pressure roller (24), an I-shaped plate (24) being slidably installed inside the through groove (51) 52), both sides of the top of the I-shaped plate (52) are connected to the longitudinal plate (22) through a second spring (53), a blade (34) is fixed on the I-shaped plate (52), the blade (34) is arranged close to the front pressure roller (24) and the axes of the two are parallel; a hinge seat (54) is arranged at the bottom of the I-shaped plate (52), a touch rod (55) is hinged on the hinge seat (54), a connecting plate is fixed at the bottom end of the hinge seat (54) to make the touch rod (55) rotate between the vertical direction and the horizontal direction, and a reset pad (56) is arranged on the upper part of the hinge seat (54); a pressing plate (49) is fixed on the rotating shaft (35), the pressing plate (49) and the swing rod (36) are arranged at intervals in the radial direction, and a T-shaped contact plate is arranged at the end of the pressing plate (49), when the pressing plate (49) presses the touch rod (55) downward, it drives the blade (34) to move downward to cut the tape (31). ; 2. The sealing device for carton packaging according to claim 1, characterized in that: The transmission assembly comprises a housing (13), a belt (14) and a first motor (15); the housing (13) is symmetrically mounted on a transmission roller (12) in an adjustable manner; rotating wheels are respectively mounted inside two ends of the housing (13); the belt (14) is mounted on the rotating wheels; the first motor (15) is mounted at the bottom of one end of the housing (13); and the output end of the first motor (15) is transmission-connected to the rotating wheel.

3. The sealing device for carton packaging according to claim 2, characterized in that: The tape conveying assembly comprises a first roller (26), a second roller (28), a third roller (29) and a fourth roller (30); the first roller (26) and the second roller (28) are both mounted above the longitudinal plate (22); the third roller (29) and the fourth roller (30) are mounted side by side on the longitudinal plate (22); and the outer periphery of the fourth roller (30) is provided with a texture.

4. The sealing device for carton packaging according to claim 3, characterized in that: Both ends of the rear pressure roller (25) are retractably mounted on the bottom of the main board (32) via first springs (33).

5. The sealing device for carton packaging according to claim 4, characterized in that: The lifting assembly comprises a second motor (19) and a threaded rod (18); longitudinal grooves are provided on opposite surfaces of the columns on both sides of the inverted U-shaped frame (16); the second motor (19) is fixedly mounted on the top of the column on one side of the inverted U-shaped frame (16); the threaded rod (18) is mounted on the output end of the second motor (19); the threaded rod (18) penetrates the inverted U-shaped frame (16) and extends into the interior of the longitudinal groove on one side; a sliding rod is mounted in the interior of the longitudinal groove on the other side; a side plate on one side is slidably connected to the sliding rod, and a side plate on the other side is screwed to the threaded rod (18).

6. The sealing device for carton packaging according to claim 1, characterized in that: The lifting assembly further comprises a position sensor, and the position sensor is used to detect the height position of the sealing assembly.

7. A method for sealing using the device according to any one of claims 5 or 6, characterized in that: The following steps are involved: S1, preparing the adhesive tape and adjusting the height and width of the device: the adhesive tape (31) is guided by four rollers (26, 28, 29, 30) so that the adhesive surface faces the carton; the second motor (19) is started to drive the threaded rod (18), the height position of the sealing assembly in the inverted U-shaped frame (16) is adjusted, and the positions of the left and right shells 13 are adjusted to change the clamping width; S2. When using wider tape: S21, adhesive tape positioning: the third motor (48) drives the rotating shaft (35) and the cutting unit to rotate to a position away from the front pressure roller (24), so that the adhesive tape (31) maintains a full width; S22, initial pasting and pressing and tightening: when the carton reaches the front pressing roller (24), the sponge outer layer of the front pressing roller (24) squeezes and sticks the full width of the adhesive tape (31); the carton continues to move forward to the rear pressing roller (25), and the rear pressing roller (25) presses the pasted adhesive tape under the action of the first spring (33); S23, tape cutting: the top of the carton pushes the I-shaped plate (52) and the blade (34) upward, compressing the second spring (53), and the carton is released by the rear spring, causing the blade to fall and cut; S3. When using narrower tape: S31, tape cutting: start the third motor (48) to drive the rotating shaft (35) and the swing rod (36) to rotate, so that the first gear (39), the second gear (40), the rotating drum (41) and the cutting disc (42) on the swing rod (36) rotate around the rotating shaft (35) to the front pressure roller (24). During this process: the first gear (39) meshes with the sector rack (43) to drive the rotating drum (41) and the cutting disc (42) to rotate together, and the cutting disc (42) extends into the annular groove (45) to cut the tape (31). During the rotation process, the rotating drum (41) abuts against the front section of the front pressure roller (24) to reel up the cut tape; S32, initial pasting and pressing and tightening: when the carton reaches the front pressing roller (24), the sponge outer layer of the front pressing roller (24) squeezes and sticks the cut adhesive tape (31); the carton continues to move forward to the rear pressing roller (25), and the rear pressing roller (25) presses the pasted adhesive tape under the action of the first spring (33) to enhance the sealing strength; S33, tape cutting: achieved through the following two modes, S331, cutting the tape on the box body: the top of the carton pushes the I-shaped plate (52) and the blade (34) to move upward, compressing the second spring (53); when the carton passes through, the second spring (53) is released, causing the blade to quickly fall down and cut the tape on the box body; S332, cutting the tape on the rotating drum: the third motor (48) controls the rotating shaft (35) to rotate, driving the pressing plate (49) to make a circular motion, and pressing the contact rod (55) through the T-shaped contact plate, driving the I-shaped plate (52) and the blade (34) to cut the tape on the rotating drum (41) downward; S34, rolling and compacting: When the rotating drum (41) rolls up the cut tape, the rotating shaft (35) drives the cutting unit to revolve, and the second gear (40) engages with the arc-shaped teeth (47) to rotate, so that the main body of the rotating drum (41) and the inner wall of the arc-shaped plate (46) rotate in contact with each other, and the inner wall of the arc-shaped plate (46) compacts and arranges the rolled tape. The cutting disc (42) is located at the edge of the arc-shaped plate (46) to cut off the excess tape, thereby obtaining a compacted rolled tape, which is convenient for secondary use.

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