Annular winding machine

Abstract

The utility model discloses an annular winding machine, relates to the technical field of adhesive tape winding machines, and aims to solve the problems of frequent start and stop and low winding efficiency caused by right-angle steering of a traditional square track winding machine. The equipment comprises a rack assembly, a conveying assembly, a rotary winding mechanism, a cutting mechanism and a positioning mechanism. Wherein the rotary winding mechanism is meshed with a transmission gear through a plurality of annularly and uniformly distributed rotary gears, and is driven by a stepping motor to realize continuous and high-speed rotation of a tape releasing device along a smooth circular track so as to wind the packaging box with the adhesive tape. The conveying assembly coordinates automatic feeding and discharging of a packaging box, the positioning mechanism achieves accurate positioning and posture keeping of a box body through a sliding table, an electric control telescopic rod and a pressure sensor, and the cutting mechanism achieves automatic pressing and cutting of an adhesive tape. The annular winding path is adopted, the structure is stable, transmission is stable, winding efficiency and packaging quality are remarkably improved, and the annular winding device is suitable for assembly line automatic packaging operation.

Description

Technical Field

[0001] This application relates to the field of tape winding machine technology, specifically a ring winding machine. Background Technology

[0002] With the rapid development of the logistics and packaging industries, automated packaging equipment has become crucial for improving production efficiency and reducing labor intensity. In product packaging, especially when using long, narrow cartons, tape is typically wrapped around the carton surface along the opening and perpendicular to the box to enhance sealing strength. Traditional manual wrapping methods are inefficient and labor-intensive, particularly when handling heavy packages. To overcome the limitations of manual wrapping, various automated tape wrapping machines have emerged. Currently, a mainstream solution is the use of rectangular or square track-type wrapping machines. These machines typically employ the following structure: a closed square track is set on a rectangular frame, and a tape unwinding device circulates along this track, thereby driving the tape to wrap around the box along a square path. This design aims to match the tape's trajectory with the outer contour of the square box, improving tape adhesion and sealing efficiency.

[0003] However, existing square track winding machines have right angles or arc corners in their paths, which causes the tape unwinding device to frequently start, stop, and turn during operation. This not only makes the drive control complex and causes large mechanical impacts, but also seriously restricts the improvement of winding speed. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a circular winding machine that enables continuous, stable, and high-speed winding of tape along a circular path, fundamentally avoiding the frequent start-stop problems caused by right-angle turns in square track winding machines, thereby simplifying drive control, reducing mechanical impact, and significantly improving winding efficiency.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A circular winding machine, comprising:

[0007] A rack assembly, the rack assembly including a support frame one, a support frame two, and a connecting frame that fixes the two together;

[0008] A conveying assembly, disposed on the frame assembly, is used to convey packaging boxes over the connecting frame;

[0009] A rotary winding mechanism, comprising a portal frame fixed on the connecting frame, a plurality of support rollers evenly distributed in annularly on one side of the portal frame, a rotary gear rotatably connected to the outside of each support roller, a plurality of transmission gears evenly distributed in annularly on the portal frame and meshing with each rotary gear, a stepper motor for driving the transmission gears, and a tape feeder installed at the end of the rotary gears.

[0010] A cutting mechanism is provided on the side edge of the support frame one adjacent to the support frame two, for cutting the tape;

[0011] A positioning mechanism is disposed on the second support frame and located below the conveying path of the conveying assembly, and is used to position the packaging box conveyed to the top of the connecting frame.

[0012] In some embodiments, the conveying assembly includes a roller conveyor 1 mounted on the support frame 1, and roller conveyor 2 and roller conveyor 3 mounted on the support frame 2, wherein roller conveyor 2 and roller conveyor 3 are aligned front to back and form a strip gap between them.

[0013] In some embodiments, the outer surface of the support roller is provided with an annular groove, and the inner ring of the rotary gear is engaged in the annular groove.

[0014] In some embodiments, the tape feeder includes a positioning disk fixed to the end of the rotary gear, a three-jaw chuck rotatably connected to the outside of the positioning disk, and a rubber roller disposed on the side edge of the three-jaw chuck.

[0015] In some embodiments, the positioning mechanism includes two parallel strip support plates disposed in the middle of the support frame two, a horizontal slide rail one mounted on the upper surface of the strip support plates, a slide table slidably connected to the horizontal slide rail one, a drive unit for driving the slide table to move along the horizontal slide rail one, an electrically controlled telescopic rod one mounted on the slide table, a positioning plate driven by the electrically controlled telescopic rod one and raised and lowered along a vertical guide rail mounted on the slide table, and a pressure sensor disposed at the end of the positioning plate. A vertical slider is mounted on the outer side of the positioning plate, and the vertical slider is slidably connected to the vertical guide rail.

[0016] In some embodiments, the drive unit includes a geared motor mounted on the lower surface of the slide, a gear driven by the geared motor, and a rack mounted on the outside of one of the strip support plates and meshing with the gear.

[0017] In some embodiments, the cutting mechanism includes a mounting frame, a rubber plate fixed to the outside of the mounting frame, a second rubber roller rotatably connected to the front and rear ends of the rubber plate, a pressure plate rotatably connected to the lower root of the rubber plate via a pin, a pressure strip disposed in the middle of the pressure plate and a cutting blade on the edge, and a pneumatic telescopic rod four for driving the pressure plate to rotate. The lower surface of the rubber plate is provided with a blade groove corresponding to the cutting blade. The telescopic end of the pneumatic telescopic rod four is rotatably connected to an adapter plate via a pin, and the other end of the adapter plate is rotatably connected to the end of the pressure plate via a pin.

[0018] In some embodiments, a top pressing device is installed on the upper side of the gate-shaped bracket, the top pressing device including a pneumatic telescopic rod and a pressure plate installed at its telescopic end.

[0019] In some embodiments, a bottom clamping device is installed on the connecting frame. The bottom clamping device includes a mounting plate fixed on the connecting frame, two limiting sliders slidably connected to the mounting plate via a horizontal slide rail, a steel channel fixed to the outside of the limiting sliders, a Z-shaped bracket rotatably connected to the upper end of the steel channel via a pin, a scraper installed at the free end of the Z-shaped bracket, an electrically controlled telescopic rod two with its two ends hinged to the steel channel and the Z-shaped bracket respectively, and a pneumatic telescopic rod three with its telescopic end acting on the outside of the steel channel.

[0020] In some embodiments, a top pressing device 2 is provided on the upper outer side of the support frame 2 near the rotary gear. The top pressing device 2 includes a portal frame 2, a pneumatic telescopic rod 2 installed on the portal frame 2, and a top pressure plate 2 installed on the telescopic end of the pneumatic telescopic rod 2.

[0021] Compared with the prior art, the beneficial effects of this application are:

[0022] 1. By adopting a rotary winding mechanism driven by a stepper motor and driven by a transmission gear and a rotary gear, the tape unloader can perform a smooth and continuous circular motion. This design replaces the traditional reciprocating or segmented winding method, realizing complete and high-speed circular wrapping of the tape along the surface of the packaging box, significantly improving work efficiency and the uniformity and neatness of the winding.

[0023] 2. By setting up a positioning mechanism consisting of a horizontally movable slide, a vertically lifting positioning plate, and a pressure sensor, and cooperating with the strip gap on the conveying component, the packaging boxes on the conveyor line can be automatically and accurately positioned and clamped at the predetermined work position; combined with the top pressing device, it effectively prevents the box from shifting or vibrating during the winding process, providing a solid foundation for high-quality winding.

[0024] 3. The cutting mechanism integrates a tape guide roller, a pressure plate with a cutting blade, and a matching cutting groove; it can sequentially press the tape onto the box and cut it; this integrated design ensures smooth operation, neat cut surfaces, and pre-presses the tape tail end, improving packaging reliability and automation. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of this application;

[0027] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0028] Figure 3 This is the main view of this application;

[0029] Figure 4 This is a rear view of this application;

[0030] Figure 5 for Figure 4 Enlarged view of a portion of point B in the middle;

[0031] Figure 6 This is a schematic diagram of the tape feeder.

[0032] Figure 7 This is a schematic diagram of the bottom clamping device.

[0033] Figure 8 Schematic diagram of the cutting mechanism Figure 1 ;

[0034] Figure 9 Schematic diagram of the cutting mechanism Figure 2 ;

[0035] Figure 10 Schematic diagram of the cutting mechanism Figure 3 .

[0036] In the diagram: 1 Roller Conveyor I, 2 Packaging Box, 3 Rotary Gear, 4 Gantry Bracket I, 5 Support Roller, 6 Belt Feeder, 6a Rubber Roller I, 6b Positioning Plate, 6c Three-Jaw Chuck, 7 Top Pressing Device II, 7a Top Pressure Plate II, 7b Pneumatic Telescopic Rod II, 7c Gantry Bracket II, 8 Roller Conveyor II, 9 Support Frame II, 10 Roller Conveyor III, 11 Transmission Gear, 12 Stepper Motor, 13 Support Frame I, 14 Top Pressing Device I, 15 Positioning Plate, 16 Vertical Slider, 17 Rack and Pinion, 18 Gear, 19 Slide Table, 20 Gear Motor, 21 Electrically Controlled Telescopic Rod I, 22 Horizontal Slide Rail I, 23 Strip Support Plate, 24 Vertical Guide Rail, 25 Pressure Sensor, 26 Connecting Frame, 27 Bottom Presser, 27a Mounting Plate, 27b Scraper, 27c Z-shaped bracket, 27d steel channel, 27f limit slider, 27h horizontal slide rail II, 27j electrically controlled telescopic rod II, 27k pneumatic telescopic rod III, 28 cutting mechanism, 28a rubber sheet, 28b mounting bracket, 28c rubber roller II, 28d cutting knife, 28f pressure strip, 28h pressure plate, 28j adapter plate, 28k pneumatic telescopic rod IV.

[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] It should be noted that in the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, these are based on the appendix. Figure 3 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0040] In existing technologies, most mainstream automated tape winding equipment uses rectangular or square track designs. The basic principle is to allow the tape unwinding device to move along a closed square track that matches the outer contour of a square packaging box. However, this design has certain drawbacks: the movement path contains sharp right angles or sharp turns. This forces the drive system to perform a "deceleration-turning-acceleration" cycle at every turn. This frequent turning not only complicates the drive control logic and increases the burden on the servo system, but also introduces significant inertial shocks and mechanical vibrations, severely limiting the improvement of equipment operating speed, reducing the lifespan of transmission components, and increasing maintenance costs. Furthermore, the sudden change in tape tension at start-up and stop can easily cause the tape to wrinkle or not adhere properly, affecting packaging quality.

[0041] To address the aforementioned technical problems, this application proposes a circular winding machine based on a continuous circular motion trajectory. Its core lies in abandoning the traditional segmented linear-angular motion mode and instead employing a smooth and uninterrupted circular winding path driven by a rotary gear system. This enables the tape unwinding device to achieve uniform and continuous circular motion, thereby achieving significant improvements in simplified control, increased speed, enhanced stability, and reliability.

[0042] The specific implementation of this technical solution will be described in detail below with reference to the accompanying drawings.

[0043] Reference Figures 1 to 5 As shown, this embodiment provides a ring winding machine, which includes a frame assembly, a conveying assembly, a rotary winding mechanism, a cutting mechanism 28, and a positioning mechanism.

[0044] As the basic support structure of the entire machine, the stability and rigidity of the rack assembly are crucial. Specifically, the rack assembly includes support frame 13, support frame 9, and connecting frame 26 that fixes the two together at the middle.

[0045] The conveying assembly is responsible for the automatic conveying of packaging boxes 2, realizing assembly line operation. Specifically, it includes: roller conveyor 1 installed on support frame 13 as the feeding section; roller conveyor 8 and roller conveyor 10 installed on support frame 29 as the discharging section. To ensure that roller conveyor 8 and roller conveyor 10 work synchronously, they are driven by the same power input shaft.

[0046] In this arrangement, roller conveyor 2 (8) and roller conveyor 3 (10) are aligned along the direction of packaging box transport, but are spaced apart laterally, thus forming a strip-shaped gap extending along the transport direction between them. The width of this gap is slightly larger than the width of the positioning plate 15 in the subsequent positioning mechanism, and its length is at least sufficient to accommodate the width of the packaging box.

[0047] This configuration ensures that the packaging boxes can be smoothly conveyed out by roller conveyor 28 and roller conveyor 310, while also providing unobstructed space for the lifting and movement of the positioning mechanism, thus realizing the spatial connection between continuous conveying and fixed-point winding processes.

[0048] The portal frame 4 is a rigid support in the shape of an inverted "U", with its two lower ends fixed to the upper surface of the connecting frame 26 by bolts. There are four support rollers 5, evenly distributed in a ring at 90-degree intervals and fixed to the upright plate on the side of the portal frame 4 facing the support frame 9. Each support roller 5 has a cylindrical body with a ring-shaped groove machined in the center of its outer surface. The ends of the support rollers 5 are rotatably connected to the portal frame 4 via bearings.

[0049] The number of transmission gears 11 is the same as that of the support roller 5. The inner ring of the rotary gear 3 has an annular protrusion that matches the annular groove on the outer side of the support roller 5. This "groove-protrusion" fit provides the rotary gear 3 with both radial and axial limits. The radial limit prevents the rotary gear 3 from radially running out of control during rotation; the axial limit prevents it from moving along the axis of the support roller 5. This ensures that the rotary gear 3 can only rotate smoothly around the axis of the support roller 5, resulting in high motion accuracy.

[0050] Multiple transmission gears 11 are evenly distributed in a ring on the same side plate of the portal frame 4, and each transmission gear 11 meshes with a rotary gear 3. A stepper motor 12 directly drives the end central shaft of one of the transmission gears 11 via a coupling. When the stepper motor 12 starts, power is transmitted through this transmission gear 11 to the meshing rotary gear 3. The other unpowered transmission gears 11 also rotate accordingly.

[0051] A tape feeder 6 is bolted to the outer end face of the rotary gear 3. Therefore, when the rotary gear 3 rotates, the tape feeder 6 moves in a uniform circular motion along with it. Traditional square tracks require the drive unit to move independently in both the X and Y axes and synthesize the path, resulting in complex control. This solution simplifies the motion to a single rotational degree of freedom. The stepper motor 12 only needs to rotate uniformly in one direction to drive all tape feeders 6 in uniform circular motion, simplifying the control logic. The gear meshing transmission features high rigidity, zero slippage, and high synchronization accuracy, ensuring absolute synchronization of the movements of multiple tape feeders 6 and avoiding tape pulling or uneven tension caused by asynchrony.

[0052] Reference Figures 8 to 10The cutting mechanism 28 is located on the side edge of the support frame 13 adjacent to the support frame 2 9, near the starting and ending areas of the winding. Its specific structure includes: a mounting bracket 28b fixed to the side of the support frame 13; a rubber sheet 28a fixed to the outside of the mounting bracket 28b, with a flexible rubber pad and a knife groove attached to its lower surface; two rubber rollers 28c, rotatably connected to the front and rear ends of the rubber sheet 28a along the conveying direction via bearings, respectively; their function is to reduce friction between the tape and the fixed components; and a pressure plate 28h rotatably connected to the lower root of the rubber sheet 28a via a pin. The pressure plate 28h can be considered a lever, with a pressure strip 28f in the center of its upper surface and a cutting blade 28d mounted on its edge. The lower surface of the adhesive sheet 28a is provided with a strip-shaped protrusion facing the pressure strip 28f. The outer surface of the strip-shaped protrusion is arc-shaped. When the pressure strip 28f presses the tape onto the lower surface of the adhesive sheet 28a, the lowest end of the strip-shaped protrusion contacts the tape, which can effectively prevent the tape from sticking to the lower surface of the adhesive sheet 28a.

[0053] The cylinder of the pneumatic telescopic rod 28k is hinged to the mounting bracket 28b. Its telescopic end is connected to the adapter plate 28j via a pin, and the other end of the adapter plate 28j is connected to the outer end of the pressure plate 28h via a pin. This forms a linkage mechanism of "cylinder-adapter plate-pressure plate".

[0054] Based on this, when the tape needs to be cut after a predetermined number of wraps, the rotating tape feeder 6 pulls the tape to the cutting mechanism 28, and the tape passes under the two rollers 28c. The pneumatic telescopic rod 28k extends and pushes the inner end of the pressure plate 28h upward through the adapter plate 28j. The pressure strip 28f on the pressure plate 28h first presses the tape onto the rubber pad of the rubber plate 28a to achieve pre-fixation; simultaneously, the cutting blade 28d presses into the blade groove of the rubber plate 28a to cut the tape. This ensures that the cut end of the tape is firmly pressed onto the rubber plate 28a.

[0055] The positioning mechanism is used to accurately position the packaging box 2 during the winding process to prevent it from moving. There are two strip support plates 23, which are set parallel to each other on the middle frame of the support frame 9 and are located below the strip gap.

[0056] A horizontal slide rail 22 is mounted on the upper surface of the strip support plate 23. The slide table 19 is slidably connected to the horizontal slide rail 22 via a slider at its lower part, allowing the slide table 19 to move along the length of the strip gap. The drive unit includes a geared motor 20, a gear 18, and a rack 17. The geared motor 20 is mounted on the lower surface of the slide table 19. The gear 18 is mounted on the output shaft of the geared motor 20. The rack 17 is mounted on the outer side of one of the strip support plates 23 and meshes with the gear 18. The geared motor 20 rotates in both directions, thus driving the slide table 19 to move precisely left and right via the gear and rack pair.

[0057] A vertical guide rail 24 is mounted on the upper surface of the slide table 19. A vertical slider 16 is mounted on the telescopic end of the electrically controlled telescopic rod 21. The vertical slider 16 is slidably connected to the vertical guide rail 24, forming a precision guide pair. The cylinder of the electrically controlled telescopic rod 21 is mounted on the slide table 19, and a positioning plate 15 is mounted on the outer side of the vertical slider 16. The electrically controlled telescopic rod 21 drives the positioning plate 15 to rise and fall.

[0058] The pressure sensor 25 is located at the end of the positioning plate 15 extending toward the side of the packaging box, and is used to detect whether it is in contact with the side of the packaging box.

[0059] Specifically, the packaging box 2 is fed in by the roller conveyor 1. The drive unit operates, driving the slide 19 to move, aligning the positioning plate 15 with the center of the box along its length. The positioning plate 15 is moved to a predetermined position above the strip gap and then paused. Then, the electrically controlled telescopic rod 21 pushes the positioning plate 15 upwards until the pressure sensor 25 at its end can contact the side of the packaging box 2. When the packaging box 2 contacts the pressure sensor 25, the pressure sensor 25 transmits a signal to the external controller, which then controls the roller conveyor to stop working. At this point, the tape wrapping action can begin.

[0060] Reference Figure 6 The tape unloader 6 includes a positioning disc 6b, which is bolted to the center of the end face of the rotary gear 3. A three-jaw chuck 6c is rotatably connected to the outside of the positioning disc 6b via bearings. The three-jaw chuck 6c is used to quickly clamp the mandrel of the tape roll; when changing the roll, simply loosen the workpiece, making operation convenient. The three-jaw chuck 6c is a mechanical chuck. The rubber roller 6a is mounted on the side edge of the three-jaw chuck 6c via bearings, serving as a tape exit guide and tension buffer point.

[0061] Specifically, during the winding process, the tape unloader 6 rotates with the rotary gear 3. Since the tape is pulled from a stationary box, if the tape unloader itself cannot rotate, the tape roll will be forcibly dragged, causing the tape to twist. In this application, the three-jaw chuck 6c can rotate freely relative to the positioning plate 6b, thereby passively releasing the tape and ensuring smooth tape output and consistent tension.

[0062] To ensure absolute stability of the packaging box during high-speed winding and to handle the tape tail end, this application incorporates multiple sets of clamping devices. The top pressing device 14 includes a pneumatic telescopic rod and a pressure plate. Its cylinder is mounted on the upper side of the gantry bracket 4, with the telescopic rod pointing downwards and the pressure plate connected to the telescopic end. During tape winding, this device actuates, pressing downwards from one side of the top of the box. Its advantage is providing initial stabilizing force and preventing the box lid from opening.

[0063] like Figure 1 and 3As shown, the top pressing device 2 7 includes a gate-shaped bracket 2 7c, a pneumatic telescopic rod 2 7b, and a top pressure plate 2 7a. It is located on the upper outer side of the support frame 2 9. After the tape is wrapped, the top pressure plate 2 7a presses down on the tape wrapping position, so that the tape can be adhered more firmly.

[0064] like Figure 7 As shown, the bottom clamping device 27 is mounted on the connecting frame 26, which includes a mounting plate 27a, a horizontal slide rail 27h, a limiting slider 27f, a steel channel 27d, a Z-shaped bracket 27c, a scraper 27b, an electrically controlled telescopic rod 27j, and a pneumatic telescopic rod 27k.

[0065] Specifically, mounting plate 27a is fixed to connecting frame 26. Two limiting sliders 27f are slidably connected to mounting plate 27a via horizontal slide rail 27h. Steel channel 27d is welded to the outside of limiting slider 27f. The lower end of Z-shaped bracket 27c is hinged to the upper end of steel channel 27d via a pin. Scraper 27b is installed at the free end of Z-shaped bracket 27c. The two ends of electrically controlled telescopic rod 27j are hinged to steel channel 27d and Z-shaped bracket 27c respectively. The cylinder of pneumatic telescopic rod 27k is hinged to mounting plate 27a, and its telescopic end acts on the outside of steel channel 27d.

[0066] Based on this, when the tape is cut, its tail end may be suspended in the air. First, the electrically controlled telescopic rod 27j extends and pushes the Z-shaped bracket 27c upward. The Z-shaped bracket 27c presses the scraper 27b against the tape pasting position at the bottom of the packaging box 2. Then, the pneumatic telescopic rod 27k moves, pushing the steel channel 27d and the Z-shaped bracket 27c a short distance along the horizontal slide rail 27h towards the bottom of the packaging box 2, so that the scraper 27b presses the tail end of the tape against the bottom of the box.

[0067] More specifically, the scraper 27b at the front end is used to smooth the tail of the tape after it has been cut, while the scraper 27b at the rear end is used to smooth the head of the tape.

[0068] In use: The operator installs the tape roll onto the three-jaw chuck 6c of the tape feeder 6 and pulls out the tape head, which is pressed against the lower surface of the tape plate 28a by the pressure plate 28h. The packaging box 2 is placed on the roller conveyor 1 by the front assembly line or manually. After starting, it is conveyed to the winding station. When the front end of the packaging box 2 contacts the pressure sensor 25, the roller conveyor 1 stops working.

[0069] Then the top pressing device 14 is pressed down to stabilize the box and prevent the top cover of the box from opening.

[0070] The electrically controlled telescopic rod 27j, located at the rear end of the mounting plate 27a, extends and pushes the Z-shaped bracket 27c upward. The Z-shaped bracket 27c pushes the scraper 27b to press the tape head against the bottom of the packaging box 2. At this time, the pressure plate 28h swings downward under the action of the pneumatic telescopic rod 28k, simultaneously releasing the tape head. Then, the pneumatic telescopic rod 27k extends, pushing the steel channel 27d and the Z-shaped bracket 27c forward a short distance along the horizontal slide rail 27h, so that the scraper 27b presses the tape head against the bottom of the box.

[0071] Start the stepper motor 12, which drives the transmission gear 11. The transmission gear 11 drives the rotary gear 3 and the tape feeder 6 to rotate. The tape feeder 6 moves in a circular motion around the packaging box 2, smoothly wrapping the tape around the box.

[0072] After the wrapping is complete, the rotating tape releaser 6 pulls the tape back to the cutting mechanism 28. The pneumatic telescopic rod 28k actuates, driving the pressure plate 28h to swing upward, first pressing the tape down with the pressure strip 28f, and then cutting it with the cutting blade 28d.

[0073] After the tape is cut, firstly, the electrically controlled telescopic rod 27j, located at the front end of the mounting plate 27a, extends and pushes the Z-shaped bracket 27c upward. The Z-shaped bracket 27c presses the scraper 27b onto the tape pasting position at the bottom of the packaging box 2. Then, the pneumatic telescopic rod 27k moves, pushing the steel channel 27d and the Z-shaped bracket 27c to move backward a short distance along the horizontal slide rail 27h, so that the scraper 27b presses the end of the tape against the bottom of the box.

[0074] Then, the positioning plate 15 moves a short distance to the right, and the roller conveyor is started. The above actions are repeated until tape is wrapped around different positions on the outer surface of the packaging box 2. The positioning plate 15 begins to descend under the belt drive of the electrically controlled telescopic rod 21 until it is below the roller conveyor 8 and roller conveyor 10. Then, the roller conveyor 8 and roller conveyor 10 transport the packaging box 2 to the next process.

[0075] It is worth noting that this circular winding machine can achieve automatic operation by coordinating the actions of various motors, cylinders, and sensors through a conventional PLC control system in the field.

[0076] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circular winding machine, characterized in that, include: A rack assembly, the rack assembly including a first support frame (13), a second support frame (9) and a connecting frame (26) that fixes the two together. A conveying assembly, disposed on the frame assembly, is used to convey the packaging box (2) over the connecting frame (26); The rotary winding mechanism includes a portal frame (4) fixed on the connecting frame (26), a plurality of support rollers (5) evenly distributed in annularly on one side of the portal frame (4), a rotary gear (3) rotatably connected to the outside of each support roller (5), a plurality of transmission gears (11) evenly distributed in annularly on the portal frame (4) and meshing with each rotary gear (3), a stepper motor (12) for driving the transmission gears (11), and a tape feeder (6) installed at the end of the rotary gear (3). A cutting mechanism (28) is provided on the side edge of the first support frame (13) adjacent to the second support frame (9) for cutting the tape; The positioning mechanism is set on the second support frame (9) and located below the conveying path of the conveying assembly, and is used to position the packaging box conveyed to the top of the connecting frame (26).

2. The circular winding machine according to claim 1, characterized in that, The conveying assembly includes a roller conveyor 1 (1) mounted on the support frame 1 (13), and roller conveyor 2 (8) and roller conveyor 3 (10) mounted on the support frame 2 (9). The roller conveyor 2 (8) and roller conveyor 3 (10) are aligned front to back and form a strip gap between them.

3. The circular winding machine according to claim 1, characterized in that, The outer side of the support roller (5) is provided with an annular groove, and the inner ring of the rotary gear (3) is placed in the annular groove.

4. The circular winding machine according to claim 1, characterized in that, The tape feeder (6) includes a positioning disk (6b) fixed to the end of the rotary gear (3), a three-jaw chuck (6c) rotatably connected to the outside of the positioning disk (6b), and a rubber roller (6a) disposed on the side edge of the three-jaw chuck (6c).

5. The circular winding machine according to claim 1, characterized in that, The positioning mechanism includes two parallel strip support plates (23) disposed in the middle of the support frame two (9), a horizontal slide rail one (22) mounted on the upper surface of the strip support plate (23), a slide table (19) slidably connected to the horizontal slide rail one (22), a drive unit for driving the slide table (19) to move along the horizontal slide rail one (22), an electrically controlled telescopic rod one (21) mounted on the slide table (19), a positioning plate (15) driven by the electrically controlled telescopic rod one (21) and raised and lowered along the vertical guide rail (24) mounted on the slide table (19), and a pressure sensor (25) disposed at the end of the positioning plate (15). A vertical slider (16) is mounted on the outer side of the positioning plate (15), and the vertical slider (16) is slidably connected to the vertical guide rail (24).

6. The circular winding machine according to claim 5, characterized in that, The drive unit includes a geared motor (20) mounted on the lower surface of the slide (19), a gear (18) driven by the geared motor (20), and a rack (17) mounted on the outside of one of the strip support plates (23) and meshing with the gear (18).

7. The circular winding machine according to claim 1, characterized in that, The cutting mechanism (28) includes a mounting frame (28b), a rubber plate (28a) fixed to the outside of the mounting frame (28b), a second rubber roller (28c) rotatably connected to the front and rear ends of the rubber plate (28a), a pressure plate (28h) rotatably connected to the root of the lower end of the rubber plate (28a) via a pin, a pressure strip (28f) set in the middle of the pressure plate (28h) and a cutting blade (28d) on the edge, and a pneumatic telescopic rod (28k) for driving the pressure plate (28h) to rotate. The lower surface of the rubber plate (28a) is provided with a blade groove corresponding to the cutting blade (28d). The telescopic end of the pneumatic telescopic rod (28k) is rotatably connected to a transition plate (28j) via a pin. The other end of the transition plate (28j) is rotatably connected to the end of the pressure plate (28h) via a pin.

8. The circular winding machine according to claim 1, characterized in that, The upper side of the gate-shaped bracket (4) is equipped with a top pressing device (14), which includes a pneumatic telescopic rod and a pressure plate installed at its telescopic end.

9. The circular winding machine according to claim 1, characterized in that, The connecting frame (26) is equipped with a bottom clamping device (27), which includes a mounting plate (27a) fixed on the connecting frame (26), two limiting sliders (27f) slidably connected to the mounting plate (27a) via a horizontal slide rail (27h), a steel channel (27d) fixed to the outside of the limiting sliders (27f), a Z-shaped bracket (27c) rotatably connected to the upper end of the steel channel (27d) via a pin, a scraper (27b) installed at the free end of the Z-shaped bracket (27c), an electrically controlled telescopic rod (27j) hinged at both ends to the steel channel (27d) and the Z-shaped bracket (27c) respectively, and a pneumatic telescopic rod (27k) whose telescopic end acts on the outside of the steel channel (27d).

10. The circular winding machine according to claim 1, characterized in that, A top pressing device 2 (7) is provided on the upper outer side of the support frame 2 (9) near the rotary gear (3). The top pressing device 2 (7) includes a portal frame 2 (7c), a pneumatic telescopic rod 2 (7b) installed on the portal frame 2 (7c), and a top pressure plate 2 (7a) installed at the telescopic end of the pneumatic telescopic rod 2 (7b).

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