A rotating fire extinguisher packaging box film covering device

Abstract

This utility model relates to the field of wrapping technology, specifically a rotating fire extinguisher packaging box wrapping device. The device includes a base, a support, a rotating device, a wrapping roll, and a control box. The rotating device drives a pallet to rotate via a rotating motor, providing a wrapping reference surface for the packaging box. A hydraulic cylinder is installed at the top of the support, with its piston rod connected to a positioning plate to constrain the rotational offset of the packaging box. The wrapping mechanism includes a wrapping drum with pre-wound packaging film and a slitting roller. The wrapping drum passively releases the film, while the slitting roller actively adjusts the film tension and release speed via a drive motor. The control box centrally controls the rotating motor, drive motor, and hydraulic cylinder to achieve dynamic matching of pallet rotation speed, slitting speed, and positioning pressure. This utility model achieves automatic and tight wrapping of the wrapping film on the surface of the packaging box through the wrapping roll and rotating device, offering advantages such as high automation, uniform and stable wrapping, and wide applicability, especially suitable for the efficient packaging of regular boxes such as fire extinguisher packaging boxes.

Description

Technical Field

[0001] This utility model relates to the field of wrapping technology, specifically to a film-coating device for rotating fire extinguisher packaging boxes. Background Technology

[0002] Currently, in the export transportation of fire extinguishers, individual fire extinguishers are typically packaged in cardboard boxes, and multiple boxes are then stacked on pallets to form a complete pallet, which is then transported long distances via containers. To prevent the palletized goods from loosening or tipping over during transportation, existing technology mainly relies on manual wrapping: operators manually wrap and secure the palletized goods with stretch film. However, manual wrapping is inefficient, and the wrapping speed is limited by the operator's physical strength and skill level, making it difficult to meet the production pace of large-scale export orders. The wrapping quality is also inconsistent, and the tension and uniformity of the stretch film are highly dependent on the operator's experience and strength, easily resulting in problems such as localized wrapping that is too loose or too tight, leading to a lack of overall secure securing of the palletized goods.

[0003] Chinese Patent CN119190496A discloses a pallet wrapping machine, including a placement turntable, a wrapping film roller, and a long plate. The turntable is equipped with a clamping mechanism, and the wrapping film roller and the long plate are equipped with a replacement mechanism. The replacement mechanism includes a plug-in assembly and a limiting assembly. The plug-in assembly includes a connecting sleeve. Mounting plates are fixedly connected to both the upper and lower surfaces of the wrapping film roller. A fixing seat is fixedly connected to the inner side of a T-shaped annular slider. A plug plate is inserted into a slot, and fixing plates are fixedly connected to both sides of the plug plate. A telescopic plate is hinged to the side of the fixing plate away from the long plate. In this pallet wrapping machine, by pulling the plug plate out of the slot through the plug-in assembly, the telescopic plate can be retracted, allowing the wrapping film roller to be easily removed from the slot for replacement. This facilitates the installation of a new wrapping film roller and avoids interference during material wrapping. The above-mentioned device achieves film roll disassembly through plug-in components and telescopic plates. The lack of active drive of the rewinding roller may cause the film roll to loosen due to inertia during the release process, resulting in local winding that is too thin or knotted. Utility Model Content

[0004] The present invention aims to at least partially solve the technical problems in the related art and improve the wrapping and packing efficiency of fire extinguisher packaging boxes.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A rotating fire extinguisher covering device includes a base, a bracket, a rotating device, a positioning device, and a covering drum.

[0007] The bracket is fixedly mounted on the top of the base;

[0008] The rotating device includes a rotating motor and a tray. The rotating motor is installed at the bottom of the base, and its power output end extends upward and is fixedly connected to the bottom of the tray. The tray is rotatably mounted on the top of the base via bearings.

[0009] The coated rotary drum is positioned on the side of the support facing the tray;

[0010] The positioning device includes a support arm, a hydraulic cylinder, and a positioning plate. The support arm is fixedly mounted on the top of the bracket, and the hydraulic cylinder is vertically mounted on the end of the support arm. Its telescopic end extends downward and is fixedly connected to the positioning plate, which is directly opposite the center of the tray.

[0011] By adopting the above technical solution, the fixed assembly of the base and the bracket provides a stable basic structure for the device; the rotating motor is fixedly connected to the bottom of the pallet through the power output end, and combined with the design that the pallet can be rotatably set on the top of the base through the bearing, the reliable rotation drive of the pallet is realized; the film-coating cylinder is set on the side of the bracket facing the pallet, ensuring that the wrapping film can directly act on the goods on the pallet; the positioning device has an assembly relationship in which the support arm is fixed to the top of the bracket, the hydraulic cylinder is vertically installed at the end of the support arm and the telescopic end is connected to the positioning plate, so that the positioning plate can be accurately pressed down above the center of the pallet, and works in conjunction with the rotating pallet to effectively constrain the position of the goods and prevent the goods from loosening or tipping over during the wrapping process.

[0012] Furthermore, the bracket is provided with a mounting base, and the film-coated rotary drum is rotatably mounted on the mounting base via a rotating shaft.

[0013] By adopting the above technical solution, the mounting base set on the bracket provides a dedicated mounting carrier for the coating drum. The rotatable mounting method of the rotating shaft not only ensures the positional stability of the coating drum, but also allows it to rotate flexibly to release the winding film, ensuring continuous film delivery during the winding process.

[0014] Furthermore, the mounting base is also provided with a slitting roller, which is rotatably mounted on the mounting base via bearings and is arranged parallel to the axis of the coating drum.

[0015] By adopting the above technical solution, the slitting roller is rotatably mounted on the side of the mounting base via bearings, and the assembly relationship between the slitting roller and the film coating drum axis is parallel, so that the slitting roller and the film coating drum can form a cooperative guiding structure, which helps the wrapping film to remain flat and without deviation during the release process, and avoids wrinkles or breakage of the film roll due to uneven gravity or tension.

[0016] Furthermore, the top of the mounting base is provided with a rotating mechanism and a drive motor, and the drive motor is fixedly mounted on the bottom of the rotating mechanism;

[0017] The rotating mechanism includes a housing and a rotating gear, with the top end of the slitting roller extending between the mounting base and the rotating mechanism.

[0018] By adopting the above technical solution, the mounting base is equipped with a rotating mechanism and a drive motor. Combined with the structure that extends from the top of the slitting roller to the mounting base and the rotating mechanism, a power input interface is provided for the slitting roller. This allows the drive motor to indirectly drive the slitting roller through the rotating mechanism, thereby realizing the active rotation of the slitting roller and enhancing its cooperation efficiency with the coating drum.

[0019] Furthermore, the rotating gear is fixedly sleeved on the top end of the slitting roller, and the rotating gear is located inside the housing;

[0020] The power output end of the drive motor is provided with a drive gear, which meshes with the rotating gear for transmission.

[0021] By adopting the above technical solution, the rotating gear fixedly sleeved at the top of the slitting roller meshes with the drive gear at the power output end of the drive motor, and the rotating gear is located in the housing of the rotating mechanism. Through the precision and stability of the gear transmission, the power of the drive motor can be efficiently and synchronously transmitted to the slitting roller, so that the rotation speed of the slitting roller is consistent with the output of the drive motor, thereby improving the controllability and consistency of the slitting process.

[0022] Furthermore, a control box is provided on the side of the bracket, and the control box is electrically connected to the rotating motor, the drive motor and the hydraulic cylinder respectively.

[0023] By adopting the above technical solution, the electrical connection and assembly relationship between the control box and the rotating motor, drive motor, and hydraulic cylinder realizes the centralized control of each power component. Through unified control logic, the pallet speed, rolling speed, and positioning plate pressing pressure are coordinated, enabling the device to flexibly adjust operating parameters according to different cargo requirements, significantly improving the convenience of automated operation and the stability of the packaging process.

[0024] This utility model has the following beneficial effects:

[0025] 1. This utility model, through the coordinated assembly of support arm, hydraulic cylinder and positioning plate, enables the positioning plate to be accurately pressed down above the center of the pallet, forming a vertical constraint on the multi-layer stacked fire extinguisher packaging boxes during the wrapping process, effectively offsetting the displacement of goods caused by rotational inertia and wrapping film tension, and significantly reducing the risk of product damage caused by loosening and tipping during transportation.

[0026] 2. This utility model achieves synchronous linkage between tray rotation and wrapping film release by using a fixed connection between the rotating motor and the tray and a bearing rotation design, combined with the rotatable setting of the film-coated rotating cylinder on the support. This replaces the inefficient operation of manual wrapping and greatly improves the packing efficiency of fire extinguisher packaging boxes.

[0027] 3. This utility model uses the meshing transmission assembly of the slitting roller, drive motor, and rotating gear to enable the slitting roller to actively adjust the release speed and tension of the wrapping film, avoiding film loosening or breakage caused by passive stretching, ensuring that the wrapping film evenly and tightly covers the surface of the packaging box, and improving the stability of packaging quality.

[0028] 4. This utility model achieves centralized control of pallet speed, slitting speed and positioning plate pressure through the electrical connection design of the control box with the rotating motor, drive motor and hydraulic cylinder. Operators can flexibly adjust the operating parameters according to the packaging box specifications, which significantly improves the adaptability of the device and the convenience of automated operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0030] Figure 2 This is a bottom view of the present invention.

[0031] Figure 3 This utility model Figure 1 Enlarged schematic diagram of part A in the middle.

[0032] Figure 4 This is a schematic diagram of the structure of the coated rotary drum of this utility model.

[0033] Figure 5 This is a schematic diagram of the internal structure of the rotating mechanism of this utility model.

[0034] Among them, 1-base; 2-bracket; 21-mounting seat; 3-rotating device; 31-rotating motor; 32-tray; 4-positioning device; 41-support arm; 42-hydraulic cylinder; 43-positioning plate; 5-coating drum; 6-slitting roller; 7-rotating mechanism; 71-housing; 72-rotating gear; 8-drive motor; 81-drive gear; 9-control box. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0038] The present invention will be further described below with reference to the accompanying drawings. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 It can be seen that the bracket 2 is vertically set on the top of the base 1 by bolts, forming the main support frame; in the rotating device 3, the rotating motor 31 is fixedly installed on the bottom of the base 1 by bolts, and its power output end motor shaft vertically passes through the base 1 and is fixedly connected to the center position of the bottom of the pallet 32. The bottom of the pallet 32 ​​is movably connected to the top of the base 1 by bearings. As for the positioning device 4, the support arm 41 is fixed to the top of the bracket 2 by bolts or welding and extends horizontally in the direction of the pallet 32 ​​to form a cantilever structure. The hydraulic cylinder 42 is vertically installed at the end of the support arm 41, and its cylinder body is fixed to the support arm 41 by flanges or bolts. The piston rod of the telescopic end extends vertically downward and is fixedly connected to the center of the top of the positioning plate 43. The geometric center of the positioning plate 43 is directly opposite to the rotation center of the pallet 32 ​​to ensure precise downward pressure to constrain the goods. The coating drum 5 is assembled with the bracket 2 via the mounting base 21. The mounting base 21 is fixed to the inner side of the bracket facing the tray 32 by bolts. The coating drum 5 is rotatably mounted on the mounting base 21 via a rotating shaft. The two ends of the rotating shaft are engaged with the bearing holes of the mounting base 21 to freely rotate and release the wrapping film. In the assembly of the slitting roller 6 and the power transmission components, the slitting roller 6 is rotatably mounted on the side of the mounting base 21 and on the same side as the film coating drum 5 via bearings, and its axis is parallel and coplanar with the axis of the film coating drum 5; the housing 71 of the rotating mechanism 7 is fixedly mounted on the top of the mounting base 21 by bolts, the top end of the slitting roller 6 extends between the mounting base 21 and the housing 71, the drive motor 8 is fixedly mounted on the bottom of the housing 71 by bolts, and its power output end motor axis extends upward into the housing 71 and is equipped with a drive gear 81, the rotating gear 72 fixedly sleeved on the top end of the slitting roller 6 is completely located inside the housing 71 and directly meshes with the drive gear 81, and the control box 9 is fixedly mounted on the side of the bracket 2 by bolts, usually on the outside, and is electrically connected to the electrical control interfaces of the rotating motor 31, the drive motor 8, and the hydraulic cylinder 42 by wires respectively, forming a centralized control system to coordinately adjust the tray speed, slitting speed and positioning plate pressure.

[0039] In one embodiment, refer to Figure 2 and Figure 3It can be seen that the rotation drive of the tray 32 is achieved by the rotating device 3: the rotating motor 31 is fixedly installed at the bottom of the base 1, and its power output end motor shaft vertically passes through the base 1 and is directly fixedly connected to the center position of the bottom of the tray 32; the bottom of the tray 32 is movably connected to the top of the base 1 through the bearing (not marked), forming a rotating structure of "motor drive - bearing support". When the rotating motor 31 starts, the rotational power of the motor shaft is directly transmitted to the pallet 32, driving the pallet 32 ​​to rotate synchronously around its central axis. The bearing is set to replace sliding friction with rolling friction, which not only supports the weight of the pallet 32, but also reduces rotational resistance, ensuring that the pallet 32 ​​can smoothly and efficiently drive the fire extinguisher packaging box on it to rotate, and cooperate with the film-coating rotary drum 5 to complete the wrapping operation. The positioning device 4 controls the lifting and lowering of the positioning plate 43 through the extension and retraction of the hydraulic cylinder 42 to achieve vertical constraint on the goods. The support arm 41 is fixed to the top of the bracket 2 and extends horizontally towards the pallet 32. The hydraulic cylinder 42 is vertically installed on the side of the end of the support arm 41 away from the bracket. Its extension and retraction end piston rod is fixedly connected downward to the top center of the positioning plate 43, and the geometric center of the positioning plate 43 is directly opposite the rotation center of the pallet 32. When positioning is required, the hydraulic cylinder 42 is activated, the piston rod extends downward, and pushes the positioning plate 43 down to press the top of the goods above the pallet 32, such as multi-layered packaging boxes. The contact pressure restricts the lateral displacement or tipping of the goods caused by the rotation of the pallet. After the winding is completed, the piston rod of the hydraulic cylinder 42 retracts, the positioning plate 43 rises and resets, and the constraint on the goods is released.

[0040] In one embodiment, refer to Figure 4 and Figure 5As can be seen, firstly, the fire extinguisher packaging box to be coated is placed on the tray 32. After the rotating motor 31 of the rotating device 3 is started, its power output motor shaft is directly driven by the fixed connection with the bottom center of the tray 32 to rotate the tray 32 around the bearing unmarked on the top of the base 1. Since the tray 32 and the packaging box are in direct contact and support relationship, the packaging box rotates synchronously with the tray, forming a rotating wrapping reference surface. Subsequently, the coating drum 5 is rotatably mounted on the mounting seat 21 inside the bracket 2 via the rotating shaft. It is pre-wrapped with packaging wrapping film. When the tray 32 drives the packaging box to rotate, the operator pulls out the starting end of the wrapping film and sticks it to the side surface of the packaging box. As the packaging box continues to rotate, the tension of the film will pull the coating drum 5 to passively rotate around its own rotating shaft, realizing the continuous release of the wrapping film. In order to avoid the wrapping film from loosening or breaking due to passive stretching, the slitting roller 6 participates in the film release process through the active control of the drive motor 8. After the drive motor 8 starts, the drive gear 81 at its power output end meshes with the rotating gear 72 at the top of the slitting roller 6, driving the slitting roller 6 to rotate actively. Since the slitting roller 6 and the film coating drum 5 are set parallel to each other and located in the same vertical plane, the wrapping film needs to pass around the surface of the slitting roller 6 when it is released. The active rotation of the slitting roller can precisely adjust the tension of the film. For example, accelerating the rotation can reduce the tensile stress of the film, while decelerating can increase the tension, ensuring that the film adheres to the surface of the packaging box at a uniform and stable speed. Finally, the continuous rotation of the tray 32 causes the surface of the packaging box and the wrapping film to form relative motion. After the film contacts the packaging box, it wraps tightly layer by layer in the direction of rotation. At the same time, the slitting roller 6, through the regulation of the drive motor 8, always keeps the tension and release speed of the film matched with the rotation speed of the packaging box. For example, when the tray speed increases, the slitting roller accelerates synchronously to avoid the film being overstretched. After the packaging box has rotated once or more, the surface is completely covered by the wrapping film, completing the film coating operation.

[0041] Working principle: First, the operator places the fire extinguisher packaging box to be packaged on the tray 32. The system is then activated via the control box 9. The control box 9, acting as a centralized control system, synchronously sends start commands to the rotating motor 31, drive motor 8, and hydraulic cylinder 42, activating each power component. Subsequently, the rotating motor 31 is fixed to the bottom of the base 1, with its motor shaft extending upwards through the base and fixedly connected to the center of the bottom of the tray 32. The bottom of the tray 32 is movably connected to the top of the base 1 via bearings, forming a "motor-driven - bearing-supported" structure. After the motor starts, the motor shaft directly drives the tray 32 to rotate around its central axis, thus rotating it. The packaging boxes rotate synchronously, providing a rotational reference plane for winding. Simultaneously, a hydraulic cylinder 42 is vertically mounted at the end of the top support arm 41 of the bracket 2. Its piston rod is connected downwards to the positioning plate 43, and the center of the positioning plate 43 is directly opposite the rotation center of the pallet 32. After the cylinder is activated, the piston rod presses down, pushing the positioning plate 43 to contact the top of the packaging box. This pressure restrains any shift or tilting of the goods due to rotation, ensuring the stability of the goods' position during winding. Next, the film-coating rotary drum 5 is rotatably mounted on the mounting base 21 inside the bracket 2 via a rotating shaft. Packaging film is pre-wound onto it. After the operator attaches the starting end of the film to the side of the packaging box, the winding process continues... As the packaging box rotates, the film tension pulls the laminating drum 5 to passively rotate around the axis, achieving continuous film release. To prevent the film from loosening or breaking due to passive stretching, the slitting roller 6 is actively controlled and adjusted by the drive motor 8. The drive motor 8 is fixed to the bottom of the housing 71 of the rotating mechanism 7, and its drive gear 81 meshes with the rotating gear 72 at the top of the slitting roller 6, driving the slitting roller 6 to actively rotate and be parallel and coplanar with the laminating drum 5. When the film is released, it needs to pass around the surface of the slitting roller 6. By adjusting the speed of the slitting roller, such as when the tray is accelerated, the tension and release speed of the film are precisely controlled to ensure that the film is evenly attached to the surface of the packaging box. Finally, the continuous rotation of the pallet 32 ​​causes relative motion between the packaging box and the film. The film wraps tightly layer by layer in the direction of rotation. At the same time, the control box 9 monitors the rotation speed of the rotating motor 31, the winding speed of the drive motor 8, and the positioning pressure of the hydraulic cylinder 42 in real time, and dynamically adjusts the parameters to match, such as synchronizing the pallet rotation speed and the winding speed. When the surface of the packaging box is completely covered by the film, the control box 9 sends a stop command: the rotating motor 31 is de-energized, the pallet 32 ​​stops rotating; the piston rod of the hydraulic cylinder 42 retracts, the positioning plate 43 rises and resets; the drive motor 8 stops, and both the winding roller 6 and the film-coating drum 5 stop rotating, completing one automatic wrapping and packaging operation.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A film-coating device for a rotating fire extinguisher packaging box, characterized in that: It includes a base (1), a support (2), a rotating device (3), a positioning device (4), and a film-coated rotating cylinder (5); The bracket (2) is fixedly mounted on the top of the base (1); The rotating device (3) includes a rotating motor (31) and a tray (32). The rotating motor (31) is installed at the bottom of the base (1), and its power output end extends upward and is fixedly connected to the bottom of the tray (32). The tray (32) is rotatably mounted on the top of the base (1) through a bearing. The coated rotary drum (5) is located on the side of the support (2) facing the tray (32); The positioning device (4) includes a support arm (41), a hydraulic cylinder (42) and a positioning plate (43). The support arm (41) is fixedly installed on the top of the bracket (2). The hydraulic cylinder (42) is vertically installed at the end of the support arm (41), and its telescopic end extends downward and is fixedly connected to the positioning plate (43). The positioning plate (43) is directly opposite the center position of the tray (32).

2. The rotary fire extinguisher packaging box film coating apparatus according to claim 1, characterized in that: The bracket (2) is provided with a mounting base (21), and the film-coated rotary cylinder (5) is rotatably mounted on the mounting base (21) via a rotating shaft.

3. The rotary fire extinguisher packaging box film coating apparatus according to claim 2, characterized in that: The mounting base (21) is also provided with a slitting roller (6), which is rotatably mounted on the mounting base (21) via a bearing and is arranged parallel to the axis of the film coating drum (5).

4. The rotary fire extinguisher packaging box film coating apparatus according to claim 3, characterized in that: The mounting base (21) is provided with a rotating mechanism (7) and a drive motor (8) at the top, and the drive motor (8) is fixedly installed at the bottom of the rotating mechanism (7); The rotating mechanism (7) includes a housing (71) and a rotating gear (72), and the top end of the slitting roller (6) extends between the mounting base (21) and the rotating mechanism (7).

5. The rotary fire extinguisher packaging box film coating apparatus according to claim 4, characterized in that: The top end of the slitting roller (6) is fixedly fitted with the rotating gear (72), which is located inside the housing (71). The power output end of the drive motor (8) is provided with a drive gear (81), which meshes with the rotating gear (72) for transmission.

6. The rotary fire extinguisher packaging box film coating apparatus according to claim 5, characterized in that: The support (2) has a control box (9) on its side, which is electrically connected to the rotating motor (31), the drive motor (8) and the hydraulic cylinder (42).

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