Unmanned intelligent tray winding machine capable of being linked with conveying line

Abstract

The invention discloses an unmanned intelligent tray winding machine capable of being linked with a conveying line, and belongs to the technical field of winding machines, the unmanned intelligent tray winding machine comprises a transmission box, the top of the transmission box is rotationally connected with a rotating disc, and a rotating motor used for driving the rotating disc to rotate around the axis of the rotating disc is arranged in the transmission box. According to the device, the mounting grooves with the same width as the conveying lines are formed in the rotating disc at the top of the transmission box, the conveying rollers are rotationally mounted in the mounting grooves, and then the conveying motor on the side edge of the rotating disc is used for driving, so that the device can be connected between the conveying lines to provide a conveying function, and in addition, the rotating motor at the bottom of the rotating disc is used for driving the rotating disc to rotate; and a transmission box side edge film roll supporting plate, a lifting mechanism and a cutting-off positioning mechanism are matched for use, so that the equipment can directly complete the winding function, use is more convenient, and the winding and packaging speed is increased.

Description

Unmanned intelligent pallet wrapping machine that can be linked with conveyor lines Technical Field

[0001] This invention relates to intelligent pallet wrapping machines, and more particularly to unmanned intelligent pallet wrapping machines that can be linked with conveyor lines, belonging to the field of wrapping machine technology. Background Technology

[0002] Pallet wrapping machines are key equipment in industrial production and logistics warehousing for unitizing palletized goods. By wrapping with stretch film, goods can be fixed and protected, and they are widely used in the pre-packaging stage of warehousing and transportation of various finished goods.

[0003] Currently, most pallet wrapping machines operate as standalone machines, requiring palletized goods to be transported separately to the designated working position of the wrapping machine via forklift. This directly reduces the overall wrapping and packaging speed. Furthermore, the pallet rotation drive and the lifting and lowering of the wrapping film rolls rely on multiple sets of electrical components for decentralized control, which is not only cumbersome but also prone to inaccurate coordination. In addition, the equipment often uses a step-by-step, independent execution method for cutting and clamping the wrapping film, requiring multiple steps to be completed sequentially. This cumbersome operation process affects the wrapping processing speed.

[0004] To address these issues, an unmanned intelligent pallet wrapping machine that can be linked with a conveyor line was designed. Summary of the Invention

[0005] The main objective of this invention is to provide an unmanned intelligent pallet wrapping machine that can be linked with a conveyor line. A mounting groove, the same width as the conveyor line, is provided on the turntable at the top of the transmission box. A conveyor roller is rotatably mounted inside the groove and driven by a conveyor motor on the side of the turntable. This allows the machine to be connected to the conveyor line for conveying. Furthermore, a rotary motor at the bottom of the turntable drives its rotation, working in conjunction with the film roll support plate, lifting mechanism, and cutting and positioning mechanism on the side of the transmission box. This allows the machine to directly complete the wrapping function, making it more convenient to use and increasing the wrapping and packaging speed. The lifting mechanism and turntable rotation are linked by a drive pulley, driven pulley, and belt. While the turntable rotates and wraps the pallet under the drive of the rotary motor, it simultaneously drives the reciprocating screw, thereby controlling the film roll support plate to move up and down along the vertical guide groove. The entire process uses a purely mechanical transmission structure instead of the traditional distributed control of multiple electrical components, reducing the difficulty of equipment debugging and maintenance, and improving efficiency. The improved precision of the coordination between tray rotation and film roll lifting ensures the stability of equipment operation. The cutting and positioning mechanism, composed of a servo motor, sliding sleeve, L-shaped hook, cutter, telescopic assembly, and positioning assembly, employs a linked control method. It can complete multiple wrapping film processing steps in a single drive. While the servo motor controls the L-shaped hook to rotate and rise, the telescopic assembly simultaneously controls the L-shaped hook to slide. The L-shaped hook moves closer to the wrapping film and rises until it reaches the top of the film. Then, as it rotates downwards to reset, it is guided by the arc-shaped guide groove in the telescopic assembly, extending further forward to hook the wrapping film. Simultaneously, it pulls the wrapping film downwards to complete the cutting operation. Before cutting, the positioning assembly pre-fixes the film, ensuring a direct connection between the wrapping film and the turntable after cutting. This replaces the traditional step-by-step cutting and clamping operation, significantly improving the ease of wrapping film processing and ensuring the continuity of subsequent wrapping operations, further increasing the overall wrapping and packaging speed.

[0006] The objective of this invention can be achieved by adopting the following technical solution: an unmanned intelligent pallet wrapping machine that can be linked with a conveyor line, including a transmission box, a turntable rotatably connected to the top of the transmission box, a rotary motor for driving the turntable to rotate around its own axis inside the transmission box; an installation groove with the same width as the conveyor line is opened on the turntable, and several conveying rollers arranged in an array are rotatably installed in the installation groove; a conveying motor for driving the conveying rollers to rotate is provided on the side of the turntable; a film roll support plate for placing the wrapping film roll is horizontally arranged on the side of the top of the transmission box; a lifting mechanism is also provided on the top of the transmission box, which is used to drive the film roll support plate to move up and down reciprocally, and the lifting mechanism is linked with the turntable; a cutting and positioning mechanism is provided on the side of the top of the turntable away from the conveyor motor, for cutting the wrapping film and positioning it on the turntable before cutting.

[0007] Preferably, the cutting and positioning mechanism includes a servo motor, a sliding sleeve, an L-shaped hook, a cutter, a telescopic assembly, and a positioning assembly. A sliding sleeve is mounted on the output shaft of the servo motor, and an L-shaped hook is slidably arranged inside the sliding sleeve. A cutter that cooperates with the L-shaped hook is fixed on the turntable. An opening for the L-shaped hook to pass through is provided at the top of the turntable. A telescopic assembly is provided at the end of the L-shaped hook away from the cutter. The telescopic assembly drives the L-shaped hook to slide during rotation, and the telescopic assembly is linked to the rotational movement of the L-shaped hook. A positioning assembly is provided between the side of the L-shaped hook away from the telescopic assembly and the top of the turntable. The positioning assembly is used to press and position the stretch film before cutting.

[0008] Preferably, the telescopic assembly includes a vertical plate, an inclined groove, and an arc-shaped guide groove. The vertical plate has a connected inclined groove and an arc-shaped guide groove. The arc-shaped guide groove is located at the bottom end of the inclined groove. A guide post is fixed on the L-shaped hook rod, and the guide post slides within the inclined groove and the arc-shaped guide groove. A backstop block is hinged to the upper side of the groove opening near the bottom end inside the inclined groove. A positioning block is attached to the side of the backstop block near the top of the inclined groove. The positioning block is fixed to the inner top of the inclined groove. A first return spring is provided between the side of the backstop block near the positioning block and the inner top of the inclined groove.

[0009] Preferably, a positioning ring is fixedly installed at one end of the L-shaped hook rod near the guide post, and a second return spring is provided between the positioning ring and the end of the sliding sleeve, with the L-shaped hook rod passing through the inside of the second return spring.

[0010] Preferably, the positioning component includes a support block, an upper top block, and a lower pressure block. The support block is fixed to the top of the turntable. A slide rod slides vertically on the support block. An upper top block is fixed on the slide rod. A compression spring is sleeved on the slide rod. The two ends of the compression spring abut against the top of the support block and the bottom of the upper top block, respectively. A lower pressure block is fixed to the side of the L-shaped hook rod. The upper top block and the lower pressure block cooperate to clamp and fix the wrapping film.

[0011] Preferably, the lifting mechanism includes a column, a vertical guide groove, a second slider, a reciprocating screw, and a pulley assembly. The column is vertically fixed to the top of the transmission box. A vertical guide groove is provided on the side of the column facing the film roll support plate. The second slider is slidably fitted in the vertical guide groove. The second slider is fixedly connected to the side of the film roll support plate away from the winding film roll. A reciprocating screw is rotatably installed in the vertical guide groove in the vertical direction. The reciprocating screw is threadedly fitted with the second slider. A pulley assembly is provided between the bottom of the turntable and the reciprocating screw.

[0012] Preferably, the pulley assembly includes a driving pulley, a driven pulley, and a belt. The driving pulley is coaxially fixed at the bottom of the turntable, and the driven pulley is rotatably mounted on the lower part of the column. The driven pulley is coaxially fixed to the lower end of the reciprocating screw, and a belt for power transmission is wound between the driving pulley and the driven pulley.

[0013] Preferably, a conductive ring is provided around the outer edge of the bottom of the turntable, and the conveyor motor is continuously powered through the conductive ring.

[0014] Preferably, a limiting rod that can rotate around its own axis is vertically provided on one side of the top of the film roll support plate, and an annular support plate is horizontally fixed at the bottom end of the limiting rod. A guide roller for guiding the winding film is rotatably installed at the top end of the film roll support plate away from the limiting rod. A translation component is provided at the bottom of the guide roller for changing the position of the guide roller.

[0015] Preferably, the translation component includes a horizontal guide groove, a first slider, and a screw. The horizontal guide groove is opened at the top of the film roll support plate parallel to the length direction of the film roll support plate. The first slider is slidably fitted inside the horizontal guide groove. The screw is rotatably installed inside the horizontal guide groove in the horizontal direction. The screw is threadedly fitted to the first slider, and the first slider is fixedly connected to the bottom of the guide roller.

[0016] The beneficial effects of this invention are as follows: The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line provided by this invention has an installation groove of the same width as the conveyor line on the turntable at the top of the transmission box, and a conveyor roller is rotatably installed inside the installation groove. Driven by a conveyor motor on the side of the turntable, the equipment can be connected between conveyor lines to provide conveying functions. Furthermore, the rotation of the turntable is driven by a rotary motor at the bottom of the turntable, and works in conjunction with the film roll support plate, lifting mechanism, and cutting and positioning mechanism on the side of the transmission box, allowing the equipment to directly complete the wrapping function, making it more convenient to use and improving the wrapping and packaging speed. The lifting mechanism and the turntable rotation are linked by an active pulley, a driven pulley, and a belt. While the turntable rotates and wraps the pallet under the drive of the rotary motor, it simultaneously drives the reciprocating screw, thereby controlling the film roll support plate to move up and down along the vertical guide groove. The entire process uses a purely mechanical transmission structure to replace the traditional distributed control of multiple electrical components, which reduces the difficulty of equipment debugging and maintenance. This design further improves the precision of the coordination between tray rotation and film roll lifting, ensuring the stability of equipment operation. The cutting and positioning mechanism, composed of a servo motor, sliding sleeve, L-shaped hook, cutter, telescopic assembly, and positioning assembly, also employs a linked control method. It can complete multiple wrapping film processing steps in a single drive. While the servo motor controls the L-shaped hook to rotate and rise, the telescopic assembly simultaneously controls the L-shaped hook to slide. The L-shaped hook moves closer to the wrapping film and rises until it reaches the top of the film. Then, when it rotates downwards to reset, it is guided by the arc-shaped guide groove in the telescopic assembly, extending further forward to hook the wrapping film. Simultaneously, it moves the wrapping film downwards to complete the cutting operation. Before cutting, the positioning assembly pre-fixes the film, ensuring a direct connection between the wrapping film and the turntable after cutting. This replaces the traditional step-by-step independent cutting and clamping operation, significantly improving the ease of operation for wrapping film processing, ensuring the continuity of subsequent wrapping operations, and further increasing the overall wrapping and packaging speed. Attached Figure Description

[0017] Figure 1 is a top view of the winding state of the present invention; Figure 2 is a side view of the cutting state of the present invention; Figure 3 is a bottom view of the turntable bottom and the lifting mechanism linkage state of the present invention; Figure 4 is a structural diagram of the top of the turntable of the present invention; Figure 5 is a structural diagram of the top of the film roll support plate of the present invention; Figure 6 is a side view of the cutting and positioning mechanism in the closed state of the present invention; Figure 7 is a top view of the cutting and positioning mechanism in the closed state of the present invention; Figure 8 is a side view of the cutting and positioning mechanism in the open state of the present invention; Figure 9 is a schematic diagram of the left side of the upright plate of the present invention; Figure 10 is a schematic diagram of the right side of the upright plate of the present invention; Figure 11 is a top view of the turntable and the lifting mechanism linkage state of the present invention.

[0018] In the diagram: 1. Transmission box; 2. Turntable; 3. Rotary motor; 4. Mounting slot; 5. Conveyor roller; 6. Conveyor motor; 601. Conductive ring; 7. Film roll support plate; 701. Limiting rod; 702. Guide roller; 703. Horizontal guide groove; 704. First slider; 705. Screw; 8. Lifting mechanism; 801. Column; 802. Vertical guide groove; 803. Second slider; 804. Reciprocating lead screw; 805. Driven pulley; 806. Driving pulley; 807. Belt; 9. Cutting and positioning mechanism; 901. Servo... 902. Motor; 903. Sliding sleeve; 904. L-shaped hook rod; 905. Cutter; 906. Telescopic assembly; 907. Vertical plate; 908. Inclined groove; 909. Arc-shaped guide groove; 90004. Guide post; 90005. Anti-reverse stop block; 90006. Positioning block; 90007. First return spring; 90008. Positioning ring; 90009. Second return spring; 90006. Positioning assembly; 900061. Support block; 900062. Compression spring; 900063. Upper top block; 900064. Sliding rod; 900065. Lower pressure block. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto. Embodiment 1

[0020] As shown in Figures 1-11, this embodiment provides an unmanned intelligent pallet wrapping machine that can be linked with a conveyor line. It includes a transmission box 1, which provides the mounting foundation and protection for the entire machine. A turntable 2 is rotatably connected to the top of the transmission box 1. Inside the transmission box 1 is a rotary motor 3 that drives the turntable 2 to rotate around its own axis. When the rotary motor 3 starts, it drives the turntable 2 to rotate around its own axis, thereby causing the pallet and goods to rotate synchronously. The turntable 2 has an installation groove 4 of the same width as the conveyor line. During operation, the front-end conveyor line transports the pallet carrying goods to the installation groove 4 on the turntable 2. Several conveyor rollers 5 arranged in an array are rotatably installed in the installation groove 4. A conveyor motor 6 is located on the side of the turntable 2 to drive the conveyor rollers 5 to rotate. The conveyor motor 6 drives the arrayed conveyor rollers 5 in the installation groove 4 to rotate synchronously. The rotation of the conveyor rollers 5 drives the pallet to move precisely to the center wrapping position of the turntable 2, completing the pallet's feeding and positioning. After the wrapping film is wrapped, the conveyor motor 6 drives the conveyor rollers 5 to rotate again, transporting the wrapped pallet to the rear-end conveyor line, completing a single wrapping operation. The system features a humanized wrapping and packaging cycle. A film roll tray 7 is horizontally positioned on the side of the top of the transmission box 1 for holding the wrapping film rolls. A lifting mechanism 8 is also located on the top of the transmission box 1. The lifting mechanism 8 drives the film roll tray 7 to move up and down reciprocally. The lifting mechanism 8 is linked to the turntable 2; as the turntable 2 rotates, the lifting mechanism 8, linked to the turntable 2, starts synchronously, driving the film roll tray 7 to move up and down vertically. The wrapping film rolls placed on the film roll tray 7 rise and fall synchronously with the film roll tray 7, evenly wrapping the wrapping film around the rotating cargo. The outer surface of the pallet is used to complete the full-height wrapping operation of the palletized goods. A cutting and positioning mechanism 9 is located on the top side of the turntable 2 away from the conveyor motor 6. This mechanism cuts the wrapping film and positions it on the turntable 2 before cutting. After the wrapping operation is completed, the turntable 2 stops rotating and returns to its initial position. The cutting and positioning mechanism 9 on the top of the turntable 2 is activated, first unfolding upwards, and then pressing and positioning the wrapping film during the return to its original position before completing the cutting operation. Simultaneously, it ensures that the cut end of the wrapping film is fixed on the turntable 2, reserving a film head for the next wrapping operation. Example 2

[0021] The following describes the solution in Embodiment 1 in detail with reference to its specific working method. In this embodiment, the cutting and positioning mechanism 9 includes a servo motor 901, a sliding sleeve 902, an L-shaped hook 903, a cutter 904, a telescopic assembly 905, and a positioning assembly 906. The sliding sleeve 902 is mounted on the output shaft of the servo motor 901. An L-shaped hook 903 is slidably disposed inside the sliding sleeve 902. During operation, the servo motor 901 starts, and its output shaft drives the sliding sleeve 902 to rotate around the output axis of the servo motor 901. Simultaneously, the sliding sleeve 902 drives the internally slidably disposed L-shaped hook. 903 rotates and swings; a cutter 904 that cooperates with the L-shaped hook 903 is fixed on the turntable 2. The top of the turntable 2 has an opening for the L-shaped hook 903 to pass through. The end of the L-shaped hook 903 away from the cutter 904 is provided with a telescopic component 905. The telescopic component 905 is used to drive the L-shaped hook 903 to slide during rotation, and the telescopic component 905 is linked with the rotation of the L-shaped hook 903; a positioning component 906 is provided between the side of the end of the L-shaped hook 903 away from the telescopic component 905 and the top of the turntable 2. The positioning component 906 is used to press and position the wrapping film before cutting.

[0022] During the rotation of the L-shaped hook 903, the telescopic component 905 is linked to the rotation of the L-shaped hook 903, driving the L-shaped hook 903 to slide along the axial direction of the sliding sleeve 902. This causes the hooking end of the L-shaped hook 903 to move towards the wrapping film until it reaches the top of the wrapping film. Then, the servo motor 901 rotates in the opposite direction to reset. While moving downwards, the L-shaped hook 903 moves forward a certain distance again, completing the hooking action of the wrapping film. It then rotates in the opposite direction with the servo motor 901 to reset. During the reset process, the L-shaped hook 903 drives the wrapping film towards... The cutter 904 fixed on the turntable 2 moves in a certain direction. During the movement, the positioning component 906 first presses and positions the wrapping film to prevent it from springing back and shifting during the cutting process. Then, the L-shaped hook 903 drives the wrapping film to contact the cutter 904. The wrapping film is cut by the shearing action of the cutter 904. After the cutting is completed, the end of the wrapping film is still pressed and fixed on the turntable 2 by the positioning component 906, which reserves a stable film head for the next wrapping operation. This realizes the linkage operation of wrapping film cutting and positioning, replacing the traditional step-by-step film cutting and clamping operation.

[0023] In this embodiment, the telescopic assembly 905 includes a vertical plate 9051, an inclined groove 9052, and an arc-shaped guide groove 9053. The vertical plate 9051 has a communicating inclined groove 9052 and an arc-shaped guide groove 9053. The arc-shaped guide groove 9053 is located at the bottom end of the inclined groove 9052. A guide post 9054 is fixed on the L-shaped hook rod 903. The guide post 9054 is slidably engaged within the inclined groove 9052 and the arc-shaped guide groove 9053. When the L-shaped hook rod 903 rotates and lifts upward, the guide post 9054 slides along the inclined groove 9052 from top to bottom. When the guide post 9054 moves downward, the distance from it to the sliding sleeve 902 becomes shorter, thereby driving the L-shaped hook rod 903 to extend forward synchronously, so that the L-shaped hook rod... The hook end of 903 faces the stretch film and will not interfere with it during the lifting process. When the L-shaped hook 903 rotates to its highest point, the hook end of the L-shaped hook 903 is located at the top of the stretch film. Then, as it begins to rotate downwards to reset, the guide post 9054 slides from the bottom end of the inclined groove 9052 into the interior of the arc-shaped guide groove 9053. The guiding action of the arc-shaped guide groove 9053 pushes the L-shaped hook 903 forward a certain distance, so that the hook end of the L-shaped hook 903 extends behind the stretch film. Then, when it rotates downwards again, it hooks the top of the stretch film, completing the preparation for hooking the stretch film. As the L-shaped hook 903 continues to rotate, the guide post 9054 slides back into the inclined groove 9052. The L-shaped hook 903 keeps hooking the wrapping film inside the 052 until it resets, moving the wrapping film towards the cutter 904. A backstop block 9055 is hinged to the upper side of the slot near the bottom of the inclined groove 9052. A positioning block 9056 is attached to the side of the backstop block 9055 near the top of the inclined groove 9052, and the positioning block 9056 is fixed to the inner top of the inclined groove 9052. A first reset spring 9057 is provided between the side of the backstop block 9055 near the positioning block 9056 and the inner top of the inclined groove 9052. When the guide post 9054 slides from the top to the bottom of the inclined groove 9052, the guide post 9054 presses down on the backstop block 9055, and the backstop... Block 9055 rotates around the hinge point and stretches the first return spring 9057, allowing the guide post 9054 to slide smoothly through the anti-reverse block 9055 to the bottom of the inclined groove 9052. When the guide post 9054 slides into the arc-shaped guide groove 9053, the first return spring 9057 retracts, pulling the anti-reverse block 9055 to rotate in the opposite direction until the anti-reverse block 9055 is in contact with the positioning block 9056. The positioning block 9056 restricts the rotation angle of the anti-reverse block 9055. At this time, the anti-reverse block 9055 blocks the bottom channel of the inclined groove 9052. When the L-shaped hook rod 903 rotates in the opposite direction to reset, it can only pass through the inside of the arc-shaped guide groove 9053 and then enter the inside of the inclined groove 9052.

[0024] In this embodiment, a positioning ring 9058 is fixedly installed at one end of the L-shaped hook 903 near the guide post 9054. A second return spring 9059 is provided between the positioning ring 9058 and the end of the sliding sleeve 902. The L-shaped hook 903 passes through the inside of the second return spring 9059.

[0025] The second return spring 9059 is used to provide a return force and buffer limit for the extension and retraction of the L-shaped hook 903, ensuring the smoothness and accuracy of the extension and retraction of the L-shaped hook 903. When the L-shaped hook 903 rotates upward, it will compress the second return spring 9059. When the L-shaped hook 903 rotates downward to reset, it will release the second return spring 9059 for quick reset.

[0026] In this embodiment, the positioning component 906 includes a support block 9061, an upper top block 9063, and a lower pressure block 9065. The support block 9061 is fixed to the top of the turntable 2. A slide rod 9064 slides vertically on the support block 9061. The upper top block 9063 is fixed on the slide rod 9064. A compression spring 9062 is sleeved on the slide rod 9064. The two ends of the compression spring 9062 abut against the top of the support block 9061 and the bottom of the upper top block 9063, respectively. The lower pressure block 9065 is fixed to the side of the L-shaped hook rod 903. The upper top block 9063 and the lower pressure block 9065 cooperate to clamp and fix the wrapping film.

[0027] When the L-shaped hook 903 rotates upward, the compression spring 9062 returns to its original position, lifting the upper block 9063 above the top horizontal plane of the cutter 904. When the L-shaped hook 903 hooks the wrapping film and rotates downward to return to its original position, the lower pressure block 9065, fixed to the side of the L-shaped hook 903, moves downward synchronously with the L-shaped hook 903. The lower pressure block 9065 first contacts the top of the upper block 9063. As the L-shaped hook 903 continues to move downward, the lower pressure block 9065 pushes the upper block 9063 downward. When the compression spring 9062 is compressed, the stretch film is clamped between the lower pressure block 9065 and the upper top block 9063. The reverse elastic force of the compression spring 9062 achieves stable clamping and positioning of the stretch film, and the clamping and positioning action is completed before the film cutting action. After the L-shaped hook 903 drives the stretch film to contact the cutter 904 to complete the cutting, the lower pressure block 9065 still maintains the pressing state on the upper top block 9063, so that the cut end of the stretch film is always clamped and fixed on the turntable 2 to prevent the film head from falling off.

[0028] In this embodiment, the lifting mechanism 8 includes a column 801, a vertical guide groove 802, a second slider 803, a reciprocating screw 804, and a pulley assembly. The column 801 is vertically fixed to the top of the transmission box 1. The column 801 has a vertical guide groove 802 on the side facing the film roll support plate 7. The second slider 803 is slidably fitted in the vertical guide groove 802. The second slider 803 is fixedly connected to the side of the film roll support plate 7 away from the winding film roll. The reciprocating screw 804 is rotatably installed in the vertical guide groove 802 in the vertical direction. The reciprocating screw 804 is threadedly fitted with the second slider 803. A pulley assembly is provided between the bottom of the turntable 2 and the reciprocating screw 804.

[0029] When the turntable 2 rotates, the rotational power of the turntable 2 is synchronously transmitted to the reciprocating screw 804 through the pulley assembly set between the bottom of the turntable 2 and the reciprocating screw 804, driving the reciprocating screw 804 to rotate around its own axis. When the reciprocating screw 804 rotates, it drives the second slider 803 to move up and down in a straight line along the vertical guide groove 802 through the threaded transmission. In turn, the second slider 803 drives the film roll support plate 7 to move up and down in a straight line ..., so that the film roll on the film roll support plate 7 moves up and down at a uniform speed along the height direction of the goods while the goods are rotating, so as to achieve uniform and continuous wrapping of the film throughout the entire height range of the goods.

[0030] In this embodiment, the pulley assembly includes a driving pulley 806, a driven pulley 805, and a belt 807. The driving pulley 806 is coaxially fixed at the bottom of the turntable 2, and the driven pulley 805 is rotatably mounted on the lower part of the column 801. The driven pulley 805 is coaxially fixed with the lower end of the reciprocating screw 804. A belt 807 for power transmission is wound between the driving pulley 806 and the driven pulley 805.

[0031] When the rotary motor 3 drives the turntable 2 to rotate, the turntable 2 drives the drive pulley 806 to rotate synchronously. The drive pulley 806 transmits the rotational power to the driven pulley 805 through the belt 807, driving the driven pulley 805 to rotate synchronously. In turn, the driven pulley 805 drives the reciprocating screw 804 to rotate coaxially, realizing the synchronous start and stop of the rotation of the turntable 2 and the rotation of the reciprocating screw 804, ensuring the precise coordination of the tray rotation and winding and the film roll lifting and lowering actions.

[0032] In this embodiment, a conductive ring 601 is provided around the outer edge of the bottom of the turntable 2, and the conveying motor 6 is continuously powered through the conductive ring 601.

[0033] During operation, the stationary end of the conductive ring 601 is electrically connected to the fixed power supply line of the equipment, and the rotating end of the conductive ring 601 rotates synchronously with the turntable 2 and is electrically connected to the power supply line of the conveyor motor 6. Regardless of whether the turntable 2 is stationary or rotating around its own axis, the stationary end and the rotating end of the conductive ring 601 always maintain electrical continuity, which can continuously and stably deliver electrical energy from the fixed power supply line to the conveyor motor 6, ensuring that the conveyor motor 6 can start and run normally at any rotation angle of the turntable 2.

[0034] In this embodiment, a limiting rod 701, which can rotate around its own axis, is vertically provided on one side of the top of the film roll support plate 7. A ring-shaped support plate is horizontally fixed to the bottom end of the limiting rod 701. During operation, the film roll is fitted onto the outside of the limiting rod 701. The ring-shaped support plate at the bottom of the limiting rod 701 supports the bottom of the film roll, preventing it from falling off the limiting rod 701. Simultaneously, the limiting rod 701 can rotate synchronously with the film roll's unwinding action, reducing rotational resistance during unwinding and ensuring smooth unwinding. A guide roller 702 for guiding the stretch film is rotatably mounted at the end away from the limit rod 701. The stretch film drawn from the stretch film roll passes over the outer surface of the guide roller 702 and is then fixed to the tray or turntable 2. The guide roller 702 converts the sliding friction of the stretch film into rolling friction through its own rotation, reducing the frictional resistance during the stretch film conveying process. The bottom of the guide roller 702 is provided with a translation component to change the position of the guide roller 702 to adapt to the wrapping requirements of items of different sizes, and to ensure the distance between the stretch film and the cutting and positioning mechanism 9 to avoid interference.

[0035] In this embodiment, the translation component includes a horizontal guide groove 703, a first slider 704, and a screw 705. The horizontal guide groove 703 is opened on the top of the film roll support plate 7 parallel to the length direction of the film roll support plate 7. The first slider 704 is slidably fitted in the horizontal guide groove 703. The screw 705 is rotatably installed in the horizontal guide groove 703 along the horizontal direction. The screw 705 is threadedly fitted with the first slider 704, and the first slider 704 is fixedly connected to the bottom of the guide roller 702.

[0036] When the position of guide roller 702 needs to be adjusted, screw 705 is rotated. Screw 705 drives first slider 704 to move horizontally along horizontal guide groove 703 via threaded transmission. In turn, first slider 704 drives guide roller 702 to move horizontally synchronously, changing the guiding position of guide roller 702. Example 3

[0037] The following describes the specific working methods of the solutions in Embodiments 1 and 2 in further detail: In the initial state of the equipment, the mounting slot 4 on the turntable 2 is aligned with the front and rear conveyor lines. The conveyor motor 6 is kept in standby mode by the conductive ring 601. The front conveyor line transports the pallet carrying the goods to the feeding end of the turntable 2. The conveyor motor 6 starts, driving the conveyor rollers 5 arranged in an array in the mounting slot 4 to rotate synchronously. The conveyor rollers 5 move the pallet towards the center of the turntable 2 through friction with the bottom of the pallet until the pallet is accurately placed at the center winding station of the turntable 2. The conveyor motor 6 stops running, completing the pallet feeding and positioning. The end of the stretch film extending from the film roll on the film roll pallet 7 is pressed and fixed onto the turntable 2 by the positioning component 906, preparing for the wrapping operation. The rotary motor 3 starts, driving the turntable 2 to rotate around its own axis. The turntable 2 drives the pallet and goods to rotate synchronously. At the same time, the end of the stretch film fixed by the positioning component 906 rotates synchronously with the turntable 2, continuously pulling the stretch film out from the stretch film roll on the film roll pallet 7, starting the wrapping of the goods. While the turntable 2 rotates, the drive pulley 806, which is coaxially fixed at the bottom of the turntable 2, rotates synchronously. The drive pulley 806 drives the driven pulley 805 to rotate synchronously through the belt 807, and then drives the driven pulley 805 to rotate synchronously through the belt 807. 5 drives the reciprocating screw 804 to rotate coaxially. When the reciprocating screw 804 rotates, it drives the second slider 803 to move up and down along the vertical guide groove 802 on the column 801 through the screw drive. The second slider 803 synchronously drives the film roll support plate 7, the film roll on the film roll support plate 7, the limiting rod 701, and the guide roller 702 to move up and down synchronously, so that the stretch film moves up and down at a uniform speed along the height direction of the goods while the goods are rotating, so that the stretch film is evenly and continuously wrapped on the outer surface of the goods. During the wrapping process, the guide roller 702 guides the stretch film. The horizontal position of the guide roller 702 can be pre-adjusted by the translation component to avoid colliding with the upward movement of the cutting and positioning mechanism 9. Interference occurs when the wrapping operation is completed. The rotary motor 3 stops running, the turntable 2 stops rotating and returns to its initial position, so that the mounting groove 4 is aligned with the front and rear conveyor lines again. At this time, the servo motor 901 starts, and its output shaft drives the sliding sleeve 902 to rotate around the output axis of the servo motor 901. The L-shaped hook 903 rotates and lifts upward, and the guide post 9054 slides from the top to the bottom along the inclined groove 9052. When the guide post 9054 moves down, the distance from the sliding sleeve 902 will become shorter, which will drive the L-shaped hook 903 to extend forward in sync, so that the hooking end of the L-shaped hook 903 faces the wrapping film and will not interfere with the wrapping film during the lifting process.When the L-shaped hook 903 rotates to its highest point, its hooking end is positioned at the top of the stretch film. As it begins to rotate downwards to reset, the guide post 9054 slides from the bottom of the inclined groove 9052 into the interior of the arc-shaped guide groove 9053 due to the obstruction of the anti-reverse stop block 9055. The guiding action of the arc-shaped guide groove 9053 again pushes the L-shaped hook 903 forward a short distance, allowing its hooking end to extend behind the stretch film. Then, when it rotates downwards again, it hooks the top of the stretch film, completing the preparation for hooking the stretch film. As the L-shaped hook 903 continues to rotate, the guide post 9054 slides back into the inclined groove 9052. During this process, the L-shaped hook 903 remains hooked on the stretch film, driving it towards the cutter 904. During this continued movement, the lower pressure block 9065 on the L-shaped hook 903 first contacts the upper top block 9063 on the turntable 2. The stretch film is clamped and pressed between the lower pressure block 9065 and the upper top block 9063, completing the positioning of the stretch film. Then, the L-shaped hook 903 drives the stretch film to contact the cutter 904, which cuts the stretch film. After cutting, the end of the stretch film connected to the goods is fully wrapped, while the other end remains pressed and fixed on the turntable 2 by the positioning component 906, reserving a film head for the next wrapping operation. The servo motor 901 drives the L-shaped hook 903 to reset to the initial position, completing a single film cutting and positioning operation. After the film cutting and positioning operation is completed, the conveyor motor 6 starts again, using the conveyor roller 5 to transport the wrapped pallet from the turntable 2 to the rear conveyor line, completing the pallet unloading. After unloading, the equipment returns to its initial standby state, waiting for the next pallet to be fed, thus completing the cycle and achieving continuous unmanned stretch packaging operation linked to the conveyor line.

[0038] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. An unmanned intelligent pallet wrapping machine that can be linked with a conveyor line, comprising a transmission box (1), characterized in that: A turntable (2) is rotatably connected to the top of the transmission box (1). A rotary motor (3) is provided inside the transmission box (1) to drive the turntable (2) to rotate around its own axis. An installation groove (4) with the same width as the conveyor line is provided on the turntable (2). Several conveyor rollers (5) arranged in an array are rotatably installed in the installation groove (4). A conveyor motor (6) is provided on the side of the turntable (2) to drive the conveyor rollers (5) to rotate. A film roll support plate (7) for placing the winding film roll is horizontally arranged on the side of the top of the transmission box (1). A lifting mechanism (8) is also provided on the top of the transmission box (1). The lifting mechanism (8) is used to drive the film roll support plate (7) to move up and down reciprocally. The lifting mechanism (8) is linked with the turntable (2). A cutting and positioning mechanism (9) is provided on the side of the top of the turntable (2) away from the conveyor motor (6). It is used to cut the winding film and position it on the turntable (2) before cutting. The cutting and positioning mechanism (9) includes a servo motor (901) and a sliding sleeve (902). The components include an L-shaped hook (903), a cutter (904), a telescopic assembly (905), and a positioning assembly (906). A sliding sleeve (902) is mounted on the output shaft of the servo motor (901). An L-shaped hook (903) is slidably arranged inside the sliding sleeve (902). A cutter (904) that cooperates with the L-shaped hook (903) is fixed on the turntable (2). An opening is provided at the top of the turntable (2) for the L-shaped hook (903) to pass through. The L-shaped hook (903) is located away from the... One end of the cutter (904) is provided with a telescopic component (905), which is used to drive the L-shaped hook (903) to slide during rotation, and the telescopic component (905) and the L-shaped hook (903) are linked together in rotation. A positioning component (906) is provided between the side of the L-shaped hook (903) away from the telescopic component (905) and the top of the turntable (2), which is used to press and position the wrapping film before cutting.

2. The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line according to claim 1, characterized in that: The telescopic assembly (905) includes a vertical plate (9051), an inclined groove (9052), and an arc-shaped guide groove (9053). The vertical plate (9051) has a connected inclined groove (9052) and an arc-shaped guide groove (9053). The arc-shaped guide groove (9053) is located at the bottom end of the inclined groove (9052). A guide post (9054) is fixed on the L-shaped hook rod (903). The guide post (9054) is slidably engaged between the inclined groove (9052) and the arc-shaped guide groove (9053). Inside the inclined groove (9052), a backstop block (9055) is hinged to the upper side of the groove near the bottom end. A positioning block (9056) is attached to the side of the backstop block (9055) near the top of the inclined groove (9052). The positioning block (9056) is fixed to the inner top of the inclined groove (9052). A first return spring (9057) is provided between the side of the backstop block (9055) near the positioning block (9056) and the inner top of the inclined groove (9052).

3. The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line according to claim 2, characterized in that: A positioning ring (9058) is fixedly installed at one end of the L-shaped hook (903) near the guide post (9054). A second return spring (9059) is provided between the positioning ring (9058) and the end of the sliding sleeve (902). The L-shaped hook (903) passes through the inside of the second return spring (9059).

4. The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line according to claim 1, characterized in that: The positioning component (906) includes a support block (9061), an upper top block (9063), and a lower pressure block (9065). The support block (9061) is fixed on the top of the turntable (2). A slide rod (9064) slides vertically on the support block (9061). An upper top block (9063) is fixed on the slide rod (9064). A compression spring (9062) is sleeved on the slide rod (9064). The two ends of the compression spring (9062) abut against the top of the support block (9061) and the bottom of the upper top block (9063), respectively. A lower pressure block (9065) is fixed on the side of the L-shaped hook rod (903). The upper top block (9063) and the lower pressure block (9065) cooperate to clamp and fix the wrapping film.

5. The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line according to claim 1, characterized in that: The lifting mechanism (8) includes a column (801), a vertical guide groove (802), a second slider (803), a reciprocating screw (804), and a pulley assembly. The column (801) is vertically fixed to the top of the transmission box (1). The column (801) has a vertical guide groove (802) on the side facing the film roll support plate (7). The second slider (803) is slidably fitted in the vertical guide groove (802). The second slider (803) is fixedly connected to the side of the film roll support plate (7) away from the winding film roll. The reciprocating screw (804) is rotatably installed in the vertical guide groove (802) along the vertical direction. The reciprocating screw (804) is threadedly fitted with the second slider (803). A pulley assembly is provided between the bottom of the turntable (2) and the reciprocating screw (804).

6. The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line according to claim 5, characterized in that: The pulley assembly includes a driving pulley (806), a driven pulley (805), and a belt (807). The driving pulley (806) is coaxially fixed at the bottom of the turntable (2), and the driven pulley (805) is rotatably mounted on the lower part of the column (801). The driven pulley (805) is coaxially fixed with the lower end of the reciprocating screw (804). A belt (807) for power transmission is wound between the driving pulley (806) and the driven pulley (805).

7. The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line according to claim 1, characterized in that: A conductive ring (601) is provided on the outer circumference of the bottom of the turntable (2), and the conveying motor (6) is continuously powered through the conductive ring (601).

8. The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line according to claim 1, characterized in that: A limiting rod (701) that can rotate around its own axis is vertically provided on one side of the top of the film roll support plate (7), and an annular support plate is horizontally fixed at the bottom end of the limiting rod (701). A guide roller (702) for guiding the winding film is rotatably installed at the top end of the film roll support plate (7) away from the limiting rod (701). A translation component is provided at the bottom of the guide roller (702) for changing the position of the guide roller (702).

9. The unmanned intelligent pallet wrapping machine that can be linked with a conveyor line according to claim 8, characterized in that: The translation component includes a horizontal guide groove (703), a first slider (704), and a screw (705). The horizontal guide groove (703) is opened on the top of the film roll support plate (7) parallel to the length direction of the film roll support plate (7). The first slider (704) is slidably fitted in the horizontal guide groove (703). The screw (705) is rotatably installed in the horizontal guide groove (703) along the horizontal direction. The screw (705) is threadedly fitted with the first slider (704), and the first slider (704) is fixedly connected to the bottom of the guide roller (702).

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