A horizontal expansion rack unwinding device for super large rolls

Abstract

The present application provides an oversized horizontal roll expansion frame unwinding device, which is applied to the field of strapping unwinding technology and includes an unwinding support mechanism and a strapping tensioning mechanism, wherein the strapping tensioning mechanism is detachably mounted on the unwinding support mechanism; the strapping tensioning mechanism includes a support rod and an expansion portion, wherein the expansion portion is composed of multiple expansion frames and a telescopic assembly; the telescopic assembly is disposed between the expansion frame and the support rod; when installing or removing the horizontal roll, the telescopic assembly contracts, driving the expansion frame toward the support rod, allowing the expansion portion and the support rod to pass through the roll axis cavity; when fixing the horizontal roll, the telescopic assembly extends, pushing the expansion frame away from the support rod, causing the expansion frame to contact the inner wall of the roll axis cavity, thereby fixing the roll. Through the detachable strapping tensioning mechanism and the telescopic expansion portion, the unwinding device achieves the beneficial effect of conveniently loading, unloading, and fixing oversized horizontal rolls.

Description

Technical Field

[0001] The present application relates to the technical field of strapping unwinding, and in particular to an oversized roll horizontal expansion rack unwinding device. Background Art

[0002] In the technical field of unwinding devices, existing unwinding devices have exposed many technical bottlenecks when dealing with the unwinding needs of oversized horizontal reels. First, the structural combination of the unwinding support mechanism and the strapping tensioning mechanism of the existing device lacks flexibility, making it difficult to effectively accommodate reels of different specifications and weights, limiting its scope of application. Secondly, during the installation and disassembly of the horizontal reel, the operation of the expansion mechanism is cumbersome, and the process of fitting or separating the expansion part from the inner wall of the reel is not quick and convenient enough, which directly leads to low efficiency of the unwinding operation and may cause unnecessary damage to the reel. For example, Chinese patent document CN118595215A discloses a decoiler and method for processing blue strapping tape. Although the tensioning mechanism provided by the patent realizes the unwinding function of the reel to a certain extent, its structural design is only suitable for processing small reels with lighter weight, and it is difficult to meet the load-bearing and unwinding requirements of oversized horizontal reels. In addition, the tensioning mechanism used in the uncoiler relies on the coordinated cooperation of multiple sleeve components and sliders to achieve the tensioning function. It is not only complex in structure, but also not convenient to operate and use, and it is difficult to meet the needs of fast and efficient unwinding operations.

[0003] Therefore, there is an urgent need in the prior art for an unwinding device with a simpler structure, more flexible assembly and disassembly, and good adaptability to extra-large horizontal reels, so as to overcome the above-mentioned technical defects and improve the efficiency and safety of the unwinding operation. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present application provides an extra-large roll horizontal expansion rack unwinding device, which is applied to the field of strapping tape unwinding technology. It has the advantages of a simpler structure, more flexible disassembly and assembly, and can well adapt to the unwinding of extra-large horizontal rolls.

[0005] In a first aspect, an oversized roll horizontal expansion rack unwinding device comprises at least: an unwinding support mechanism, and a strapping tensioning mechanism;

[0006] The strapping belt tensioning mechanism is detachably arranged on the unwinding support mechanism, and comprises at least a support rod and an expansion portion arranged on the support rod;

[0007] The expansion part comprises at least a plurality of expansion frames, the plurality of expansion frames are arranged around the support rod, and a telescopic assembly is provided between the expansion frames and the support rod;

[0008] The telescopic assembly is used to contract when disassembling the horizontal reel, so that the expansion part and the support rod pass through the cavity of the horizontal reel axis; and to extend when fixing the horizontal reel, so that the expansion frame contacts the inner wall of the cavity of the horizontal reel axis.

[0009] The present application provides an oversized horizontal roll expansion rack unwinding device, which includes an unwinding support mechanism and a strap tensioning mechanism. The strap tensioning mechanism is detachably mounted on the unwinding support mechanism, thereby improving the adaptability of the device. The strap tensioning mechanism includes a support rod and an expansion portion, wherein the expansion portion is composed of multiple expansion frames and a telescopic assembly. The telescopic assembly is disposed between the expansion frame and the support rod and is used to control the position change of the expansion frame. When installing or removing the horizontal roll, the telescopic assembly contracts, driving the expansion frame toward the support rod, allowing the expansion portion and the support rod to pass through the roll axis cavity. When fixing the horizontal roll, the telescopic assembly extends, pushing the expansion frame away from the support rod, causing the expansion frame to contact the inner wall of the roll axis cavity, thereby fixing the roll. Through the detachable strap tensioning mechanism and the telescopic expansion portion, the unwinding device can conveniently load, unload, and fix oversized horizontal rolls.

[0010] Furthermore, the telescopic assembly includes at least two hinged rods, and the ends of the two rods are respectively fixed to the expansion frame and the support rod.

[0011] This application provides a horizontal expansion-and-unwinding device for oversized rolls. This structure, through the articulated linkage of two rods, enables telescopic movement between the expansion frame and the support rod. The articulated rod structure provides a more stable and controllable telescopic method. When expansion is required, the articulated rods unfold, pushing the expansion frame outward to fit tightly against the inner wall of the horizontal roll. When disassembly is required, the articulated rods contract, driving the expansion frame inward to facilitate loading and unloading of the roll. The articulated structure makes the telescopic process smoother and more reliable, avoiding possible jamming or uneven stress on the expansion frame during expansion and contraction, thereby ensuring the stability and reliability of the device's operation.

[0012] Furthermore, telescopic components are provided at both ends of each expansion frame to drive the expansion frame to operate from both ends of the expansion frame.

[0013] This application provides a horizontal expansion-frame unwinding device for oversized rolls. This device utilizes telescopic components at both ends of each expansion frame. During operation, these components work together to drive the expansion frame. This solution utilizes a drive system at both ends of the expansion frame, ensuring more even force distribution and more stable operation.

[0014] Furthermore, a mounting collar is provided on the support rod, and the mounting collar is used to fix the telescopic assembly.

[0015] This application provides a horizontal expansion stand unwinding device for oversized rolls. A mounting collar is provided on a support rod to secure a telescopic assembly. The mounting collar serves as an intermediate component, securing the telescopic assembly to the collar, which in turn is secured to the support rod. This structural design ensures a reliable connection between the telescopic assembly and the support rod. The use of the collar enhances the securement of the telescopic assembly, thereby ensuring stable operation of the expansion stand.

[0016] Furthermore, the support rod and the mounting collar are matched through threads, and the threads extend along the axial direction of the support rod, and are used to push the mounting collar to move axially relative to the support rod when the support rod is rotated, thereby making the expansion frame move away from or closer to the support rod under the action of the telescopic assembly.

[0017] Furthermore, the expansion part further includes a guide assembly provided between the expansion frame and the support rod;

[0018] The guide assembly includes a guide plate fixed on the mounting collar and a movable plate fixed on the expansion frame, wherein the movable plate is provided with a guide groove for inserting the guide plate;

[0019] The movable plate cooperates with the guide plate through the guide groove, and is used to make the expansion frame stably move away from or close to the support rod when the telescopic assembly is extended or retracted.

[0020] Further, the unwinding support mechanism includes at least a first support frame and a second support frame, respectively, to support both ends of the strap tensioning mechanism;

[0021] The first supporting frame and the second supporting frame are both provided with a planar rectangular frame and a vertical rectangular frame, the planar rectangular frame is in contact with the ground, and the vertical rectangular frame is vertically fixed on the planar rectangular frame;

[0022] A guide rail groove is provided on the vertical rectangular frame in the vertical direction;

[0023] A roller is provided at the bottom of the planar rectangular frame.

[0024] Furthermore, it also includes an unwinding support lifting mechanism, and the unwinding support lifting mechanism is arranged on the first support frame and the second support frame;

[0025] The unwinding support lifting mechanism includes at least a driving part and a support plate for supporting the strap tensioning mechanism, wherein both ends of the support plate are respectively connected to the guide rail grooves on opposite sides of the vertical rectangular frame; the driving part drives the support plate to move up and down along the guide rail grooves.

[0026] Furthermore, it also includes an unwinding support wheel group, which is arranged on the support plate and is used to contact the support rod of the strapping tensioning mechanism;

[0027] The unwinding support wheel group includes at least two rollers parallel to the setting direction of the support rod, and the two rollers are arranged side by side. The support rod is arranged between the two rollers and can rotate between the two rollers.

[0028] Furthermore, it also includes an unwinding power mechanism, which is arranged on one side of the unwinding support mechanism and is connected to the strapping tensioning mechanism to drive the strapping tensioning mechanism to rotate.

[0029] Beneficial effects: The present application provides an oversized horizontal expansion rack unwinding device, which includes an unwinding support mechanism and a strapping tensioning mechanism. The strapping tensioning mechanism is detachably mounted on the unwinding support mechanism, thereby improving the adaptability of the device. The strapping tensioning mechanism includes a support rod and an expansion portion, wherein the expansion portion is composed of multiple expansion frames and a telescopic assembly. The telescopic assembly is disposed between the expansion frame and the support rod and is used to control the position change of the expansion frame. When installing or removing the horizontal roll, the telescopic assembly contracts, driving the expansion frame closer to the support rod, allowing the expansion portion and the support rod to pass through the roll axis cavity. When fixing the horizontal roll, the telescopic assembly extends, pushing the expansion frame away from the support rod, allowing the expansion frame to contact the inner wall of the roll axis cavity, thereby fixing the roll. Through the detachable strapping tensioning mechanism and the telescopic expansion portion, the unwinding device can conveniently load, unload, and fix oversized horizontal rolls. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is the first stereoscopic diagram of the super-large roll horizontal expansion rack unwinding device proposed in this application.

[0031] Figure 2 This is a top view of a horizontal expansion rack unwinding device for super-large rolls proposed in this application.

[0032] Figure 3 This is a second stereoscopic view of the super-large roll horizontal expansion rack unwinding device proposed in this application.

[0033] Figure 4 This is a third stereoscopic view of the super-large roll horizontal expansion rack unwinding device proposed in this application.

[0034] Figure 5 This is the fourth stereoscopic view of the super-large roll horizontal expansion rack unwinding device proposed in this application.

[0035] Figure 6 This is the fifth stereoscopic view of the super-large roll horizontal expansion rack unwinding device proposed in this application.

[0036] Explanation of reference numbers: 1. Unwinding support mechanism; 2. Strapping belt tensioning mechanism; 21. Support rod; 22. Expansion part; 23. Expansion frame; 24. Telescopic assembly; 25. Mounting ring; 27. Guide assembly; 271. Guide plate; 272. Movable plate; 273. Guide groove; 11. First support frame; 12. Second support frame; 13. Guide rail groove; 3. Unwinding support lifting mechanism; 31. Driving part; 32. Support plate; 4. Unwinding support wheel group; 41. Roller; 5. Unwinding power mechanism. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0038] It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0039] The prior art lacks a simpler structure, more flexible assembly and disassembly, and an unwinding device that can effectively accommodate oversized horizontal rolls, thereby improving the efficiency and safety of unwinding operations. To address this problem, this application proposes an oversized horizontal expansion stand unwinding device. The following disclosure provides various embodiments or examples to achieve the objectives of this invention.

[0040] Please refer to Figures 1 to 6 , a large roll horizontal expansion frame unwinding device, comprising at least: an unwinding support mechanism 1, and a strapping tensioning mechanism 2;

[0041] The strapping tensioning mechanism 2 is detachably arranged on the unwinding support mechanism 1 and comprises at least a support rod 21 and an expansion portion 22 arranged on the support rod 21;

[0042] The expansion part 22 includes at least a plurality of expansion frames 23 , which are arranged around the support rod 21 , and a telescopic assembly 24 is arranged between the expansion frames 23 and the support rod 21 ;

[0043] The telescopic assembly 24 is used to contract when disassembling the horizontal reel, so that the expansion part 22 and the support rod 21 pass through the cavity of the horizontal reel axis; and to extend when fixing the horizontal reel, so that the expansion frame 23 contacts the inner wall of the cavity of the horizontal reel axis.

[0044] Among them, the strapping tensioning mechanism 2 is detachably arranged on the unwinding support mechanism 1. As an implementation method, the strapping tensioning mechanism 2 can be fixedly connected to the unwinding support mechanism 1 by commonly used detachable methods such as bolts, snaps or quick connectors, thereby realizing the rapid disassembly and assembly of the strapping tensioning mechanism 2 relative to the unwinding support mechanism 1.

[0045] The expansion part 22 includes at least a plurality of expansion frames 23, and the plurality of expansion frames 23 are arranged around the support rod 21, and a telescopic assembly 24 is arranged between the expansion frame 23 and the support rod 21. As an implementation method, the number of expansion frames 23 can be three, four or more, and the expansion frames 23 are evenly distributed along the circumferential direction of the support rod 21. The telescopic assembly 24 can adopt a hydraulic cylinder, an air cylinder, an electric push rod or a mechanical connecting rod mechanism. One end of the telescopic assembly 24 is connected to the expansion frame 23, and the other end is connected to the support rod 21. By controlling the extension and contraction of the telescopic assembly 24, the radial movement of the expansion frame 23 relative to the support rod 21 can be achieved.

[0046] The telescopic component 24 is used to contract when disassembling and assembling the horizontal reel, so that the expansion part 22 and the support rod 21 pass through the cavity of the horizontal reel axis; and to extend when fixing the horizontal reel, so that the expansion frame 23 contacts the inner wall of the cavity of the horizontal reel axis. Specifically, during the installation stage of the horizontal reel, the telescopic component 24 is controlled to contract, so that the expansion frame 23 moves toward the support rod 21, and the overall diameter of the expansion part 22 is reduced. At this time, the expansion part 22 and the support rod 21 can be smoothly passed through the cavity of the horizontal reel axis to complete the installation; during the fixing stage of the horizontal reel, the telescopic component 24 is controlled to extend, so that the expansion frame 23 moves away from the support rod 21, and the expansion frame 23 contacts the inner wall of the cavity of the horizontal reel axis. The horizontal reel is fixed by the friction between the expansion frame 23 and the inner wall of the cavity.

[0047] In some specific embodiments, the unwinding support mechanism 1 can adopt a welded metal frame structure to provide sufficient strength and stability for supporting the extra-large horizontal reel and the strapping tensioning mechanism 2. The strapping tensioning mechanism 2 can be designed as a modular structure for easy and quick installation and disassembly. The support rod 21 can adopt a hollow steel pipe structure to reduce weight while ensuring strength. The expansion frame 23 can be made of high-strength alloy material to improve wear resistance and service life. The telescopic assembly 24 can adopt a hinged rod assembly. When installing the horizontal reel, first remove the strapping tensioning mechanism 2 from the unwinding support mechanism 1, then pass it through the cavity of the horizontal reel axis, control the telescopic assembly 24 to expand and fix the horizontal reel, and then install the strapping tensioning mechanism 2 on the unwinding support mechanism 1 to complete the fixation of the horizontal reel. Through the above embodiment, the fast and reliable fixation and unwinding operation of the extra-large horizontal reel can be achieved.

[0048] Furthermore, the telescopic assembly 24 includes at least two hinged rods, and the ends of the two rods are respectively fixed to the expansion frame 23 and the support rod 21.

[0049] Among them, the two hinged rods constitute a connecting rod mechanism, one end of the rod is connected to the expansion frame 23, and the other end is connected to the support rod 21; by changing the hinge angle, the expansion frame 23 can achieve radial movement; the hinged structure ensures the smoothness and controllability of the telescopic movement; compared with other telescopic structures, the hinged rod can provide more stable support and guidance, reduce friction and wear during movement, and improve the reliability and service life of the device.

[0050] Specifically, when disassembling and assembling the horizontal reel, the hinged rod contracts, driving the expansion frame 23 closer to the support rod 21 to facilitate the loading and unloading of the reel; when fixing the horizontal reel, the hinged rod extends, pushing the expansion frame 23 to expand outward, fitting tightly with the inner wall of the horizontal reel, thereby fixing the reel; the hinged rod structure makes the expansion frame 23 more stable and reliable during the extension and retraction process; compared with other telescopic structures, the hinged rod can provide more precise extension and retraction control, avoiding the expansion frame 23 from getting stuck or being unevenly stressed during the extension and retraction process, thereby ensuring the stability and reliability of the device operation; in addition, the hinged structure also helps to simplify the structure of the telescopic component 24, reducing manufacturing costs and maintenance difficulties.

[0051] In some specific embodiments, the articulated rod can adopt a straight rod structure, and the two rods are hinged by a pin; the rod material can be steel to ensure strength and durability; the telescopic component 24 can be driven by hydraulic drive, and the articulated rod is pushed to open or retract by a hydraulic cylinder; for example, the piston rod of the hydraulic cylinder is connected to one of the rods, and the expansion and contraction of the articulated rod is achieved by controlling the extension and retraction of the hydraulic cylinder, thereby driving the radial movement of the expansion frame 23; this hydraulic drive method can provide a larger expansion force to meet the fixing requirements of the extra-large horizontal reel, while ensuring the smoothness and reliability of the telescopic movement.

[0052] Furthermore, telescopic components 24 are provided at both ends of each expansion frame 23 to drive the expansion frame 23 to operate from both ends of the expansion frame 23 .

[0053] Each expansion frame 23 is configured with two telescopic assemblies 24. One telescopic assembly 24 is located at one end of the expansion frame 23, and the other telescopic assembly 24 is located at the other end. These telescopic assemblies 24 are connected to both the expansion frame 23 and the support rod 21. When the expansion frame 23 needs to be driven, the telescopic assemblies 24 at both ends of the expansion frame 23 work together to drive the expansion frame 23. This dual-end drive method ensures a more balanced distribution of force on the expansion frame 23.

[0054] Furthermore, a mounting collar 25 is provided on the support rod 21 , and the mounting collar 25 is used to fix the telescopic assembly 24 .

[0055] Among them, the mounting collar 25 is provided as an intermediate component, the telescopic assembly 24 is fixed on the mounting collar 25, and the mounting collar 25 is fixed on the support rod 21. Specifically, the mounting collar 25 can adopt an annular sleeve structure, which is sleeved on the outside of the support rod 21. The mounting collar 25 and the support rod 21 can be fixed by bolt connection or key connection to ensure a stable connection between the mounting collar 25 and the support rod 21. The telescopic assembly 24 is fixed to the mounting collar 25 by bolts or pins. As a result, the telescopic assembly 24 is no longer directly connected to the support rod 21, but is connected to the support rod 21 through the intermediate structure of the mounting collar 25. This structural design makes the installation position of the telescopic assembly 24 more flexible and adjustable, and can disperse the force of the telescopic assembly 24 acting on the support rod 21, thereby improving the reliability of the connection.

[0056] In some specific embodiments, the support rod 21 is a cylindrical steel pipe, and the mounting collar 25 is a steel annular sleeve. The inner diameter of the mounting collar 25 is slightly larger than the outer diameter of the support rod 21 so that it can be easily mounted on the support rod 21.

[0057] Furthermore, the support rod 21 and the mounting collar 25 are matched by threads, and the threads extend along the axial direction of the support rod 21, which is used to push the mounting collar 25 to move axially relative to the support rod 21 when the support rod 21 is rotated, and then the expansion frame 23 is moved away from or closer to the support rod 21 under the action of the telescopic assembly 24.

[0058] Among them, the mounting collar 25 is configured as an annular component that is sleeved on the support rod 21, and a part of the telescopic assembly 24 is fixed on this mounting collar 25, so that the movement of the mounting collar 25 can directly affect the state of the telescopic assembly 24. A threaded connection is adopted between the support rod 21 and the mounting collar 25. The key to this threaded connection is that the extension direction of the thread is the axial direction of the support rod 21. Therefore, when the support rod 21 and the mounting collar 25 rotate relative to each other, the threaded structure converts the rotational motion into linear motion of the mounting collar 25 along the axial direction of the support rod 21. The axial movement of the mounting collar 25 will further act on the telescopic assembly 24, causing the telescopic assembly 24 to expand or contract, and then through the action of the telescopic assembly 24, the radial expansion or contraction of the expansion frame 23 relative to the support rod 21 is finally achieved. As a preferred embodiment, the thread can be a multi-start thread or a variable pitch thread to achieve faster or more precise radial displacement adjustment.

[0059] Specifically, when the horizontal reel needs to be tightened and fixed, the operator rotates the support rod 21. The threaded structure on the support rod 21 drives the installation collar 25 to move axially. The axial translation of the installation collar 25 pulls the telescopic assembly 24. Under the action of the thrust generated by the translation, the telescopic assembly 24 extends around the telescopic point between the two rods, pushing the expansion frame 23 to expand outward until the expansion frame 23 tightly contacts the inner wall of the cavity of the horizontal reel axis, thereby fixing the horizontal reel. Conversely, when the horizontal reel needs to be disassembled, the support rod 21 is rotated in the opposite direction. The installation collar 25 moves axially under the action of the thread, the telescopic assembly 24 contracts, and the expansion frame 23 contracts inward, separating from the inner wall of the cavity of the horizontal reel axis, facilitating the disassembly of the horizontal reel. By rotating the support rod 21, the radial displacement of the installation collar 25 can be precisely controlled, and the degree of expansion of the expansion frame 23 can be precisely adjusted to achieve reliable contact or separation between the expansion portion 22 and the inner wall of the reel.

[0060] Furthermore, the expansion portion 22 further includes a guide assembly 27 disposed between the expansion frame 23 and the support rod 21;

[0061] Please refer to Figure 3 、 Figure 4 The guide assembly 27 includes a guide plate 271 fixed on the support rod 21 and a movable plate 272 fixed on the expansion frame 23. The movable plate 272 is provided with a guide groove 273 for inserting the guide plate 271.

[0062] The movable plate 272 cooperates with the guide plate 271 through the guide groove 273 to enable the expansion frame 23 to stably move away from or close to the support rod 21 when the telescopic assembly 24 is extended or retracted.

[0063] Among them, the guide assembly 27 is arranged between the expansion frame 23 and the support rod 21. The guide assembly 27 includes a guide plate 271 and a movable plate 272. The guide plate 271 is fixed on the support rod 21, and the movable plate 272 is fixed on the expansion frame 23. The movable plate 272 has a guide groove 273, and the guide groove 273 is embedded in the guide plate 271. The movable plate 272 interacts with the guide plate 271 through the guide groove 273, and guides the expansion frame 23 to stably move away from or close to the support rod 21 when the telescopic assembly 24 is extended or retracted. As a preferred embodiment, the shape of the guide plate 271 can be designed to be an annular thin plate, and the shape of the guide groove 273 can be designed to be a groove-type structure that matches the guide plate 271, so as to ensure that the guide plate 271 can slide in the guide groove 273 and effectively guide the moving direction of the movable plate 272. Furthermore, the guide plate 271 can be fixed to the support rod 21 by screws, welding, etc., and the movable plate 272 can be fixed to the expansion frame 23 by screws, welding, etc. to ensure the stability of the guide assembly 27. In this way, the movement trajectory of the expansion frame 23 can be effectively guided and constrained, ensuring that the expansion frame 23 remains stable during movement and avoids shaking or deviation.

[0064] Further, the unwinding support mechanism 1 includes at least a first support frame 11 and a second support frame 12, respectively, to support both ends of the strap tensioning mechanism 2;

[0065] The first support frame 11 and the second support frame 12 are both provided with a planar rectangular frame and a vertical rectangular frame, the planar rectangular frame is in contact with the ground, and the vertical rectangular frame is vertically fixed on the planar rectangular frame;

[0066] A guide rail groove 13 is provided on the vertical rectangular frame in the vertical direction;

[0067] Rollers are arranged at the bottom of the flat rectangular frame.

[0068] Among them, the first support frame 11 and the second support frame 12 are configured to support the two ends of the strapping tensioning mechanism 2, thereby achieving stable support for the strapping tensioning mechanism 2. Each support frame includes a flat rectangular frame and a vertical rectangular frame. The flat rectangular frame is in direct contact with the ground, ensuring the placement stability of the support frame. The vertical rectangular frame is fixed on the flat rectangular frame, providing a support structure in the vertical direction. The vertical rectangular frame is provided with a guide rail groove 13, which provides a structural basis for the subsequent installation of the unwinding support lifting mechanism 3, making it possible to adjust the height of the support mechanism to accommodate rolls of different sizes. Rollers are provided at the bottom of the flat rectangular frame, so that the entire unwinding support mechanism 1 has mobility, which facilitates the movement and position adjustment of the device.

[0069] Specifically, by adopting the first support frame 11 and the second support frame 12 to support the strap tensioning mechanism 2 from both ends respectively, the stability of the strap tensioning mechanism 2 during operation can be ensured. The flat rectangular frame is in contact with the ground to form a stable support base, and the vertical rectangular frame extends upward to constitute the main support structure. The guide rail groove 13 is vertically opened on the vertical rectangular frame, allowing the unwinding support lifting mechanism 3 to move up and down along the guide rail groove 13, thereby realizing the adjustment of the support height. The setting of the roller enables the operator to easily push or pull the entire unwinding device to adjust its position in the workplace. As a result, the unwinding support mechanism 1 can not only stably support the strap tensioning mechanism 2, but also has the advantages of adjustable height and easy movement, can better adapt to rolls of different sizes and weights, and improve the overall operational convenience of the device.

[0070] In some preferred embodiments, Figure 5 As shown, the planar rectangular frames of the first support frame 11 and the second support frame 12 can be connected to each other to form a larger and more stable rectangular frame to provide better support.

[0071] Furthermore, it also includes an unwinding support lifting mechanism 3, which is arranged on the first support frame 11 and the second support frame 12;

[0072] The unwinding support lifting mechanism 3 includes at least a driving part 31 and a support plate 32 for supporting the strap tensioning mechanism 2. The two ends of the support plate 32 are respectively connected to the guide grooves 13 on the opposite sides of the vertical rectangular frame; the driving part 31 drives the support plate 32 to move up and down along the guide groove 13.

[0073] The unwinding support lifting mechanism 3 is mounted on the first support frame 11 and the second support frame 12. The unwinding support lifting mechanism 3 includes a drive unit 31 and a support plate 32. The support plate 32 is used to support the strap tensioning mechanism 2. The two ends of the support plate 32 are connected to the guide rail grooves 13 on opposite sides of the vertical rectangular frame. The drive unit 31 drives the support plate 32 to move up and down along the guide rail grooves 13. The cooperation between the guide rail grooves 13 and the support plate 32 can define the movement trajectory of the support plate 32 and ensure the stability of the support plate 32 during the up and down movement. The drive unit 31 provides power, allowing the support plate 32 to move up and down along the guide rail grooves 13, thereby driving the strap tensioning mechanism 2 on the support plate 32 to be raised and lowered. Through the unwinding support lifting mechanism 3, the height of the strap tensioning mechanism 2 can be adjusted to accommodate horizontal rolls of different sizes, making the device more versatile and facilitating the loading and unloading of horizontal rolls.

[0074] Furthermore, it also includes an unwinding support wheel set 4, which is arranged on the support plate 32 and is used to contact the support rod 21 of the strapping tensioning mechanism 2;

[0075] The unwinding support wheel assembly 4 includes at least two rollers 41 parallel to the direction in which the support rod 21 is arranged. The two rollers 41 are arranged side by side, and the support rod 21 is arranged between the two rollers 41 and can rotate between the two rollers 41 .

[0076] Specifically, the technical problem to be solved by this solution is the friction and potential wear that may be caused by the direct contact between the support rod 21 and the support plate 32. In order to solve this problem, the present application introduces an unwinding support wheel group 4. The unwinding support wheel group 4 is mounted on the support plate 32, serving as the interface between the support plate 32 and the support rod 21. The unwinding support wheel group 4 includes at least two parallel rollers 41 arranged side by side. The support rod 21 of the strapping tensioning mechanism 2 is placed between these two rollers 41 in the horizontal direction. When the strapping tensioning mechanism 2 rotates during the unwinding process, the support rod 21 rolls on the rollers 41 instead of sliding on the support plate 32. This rolling motion significantly reduces friction compared to sliding friction. The reduction in friction makes the rotation of the strapping tensioning mechanism 2 smoother, reduces the resistance during the unwinding process, and minimizes the wear of the support rod 21 and the support plate 32.

[0077] In some preferred embodiments, please refer to Figure 6 The unwinding support wheel group 4 can also be arranged on the support plate 32, and the two rollers 41 are arranged side by side on the same side of the support rod 21. The support rod 21 is provided with an annular sleeve that rotates in line with the gap between the two rollers 41. This support structure can reduce the contact area between the support rod 21 and the unwinding support wheel group 4, and further reduce the friction of the rotation of the strapping tensioning mechanism 2.

[0078] Furthermore, it also includes an unwinding power mechanism 5, which is arranged on one side of the unwinding support mechanism 1 and is connected to the strapping tensioning mechanism 2 to drive the strapping tensioning mechanism 2 to rotate.

[0079] The unwinding power mechanism 5, as the source of rotational power, is a key component for achieving automatic unwinding. The unwinding power mechanism 5 is mounted on the side of the unwinding support mechanism 1. This positional relationship facilitates the connection between the power mechanism and the strapping tensioning mechanism 2. The unwinding power mechanism 5 is connected to the strapping tensioning mechanism 2, indicating that the power output is to the strapping tensioning mechanism 2. The power mechanism drives the strapping tensioning mechanism 2 to rotate, thereby driving the horizontal reel for unwinding. Driving the strapping tensioning mechanism 2 to rotate defines the specific function of the unwinding power mechanism 5, namely, driving the strapping tensioning mechanism 2 to rotate and achieve the purpose of unwinding.

[0080] As a preferred embodiment, the unwinding power mechanism 5 can be a motor, which is connected to the support rod 21 of the strap tensioning mechanism 2 via a transmission component such as a coupling or gears, thereby driving the support rod 21 to rotate. The motor can be a servo motor or a stepper motor to achieve precise speed control and positioning. The control system of the unwinding power mechanism 5 can be integrated into the overall control system of the unwinding device to achieve automated control.

[0081] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0082] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Persons skilled in the art will readily appreciate that the present application may be modified and altered in various ways. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A horizontal expansion rack unwinding device for large rolls, characterized in that: At least: An unwinding support mechanism (1) and a strapping tensioning mechanism (2); The strapping belt tensioning mechanism (2) is detachably arranged on the unwinding support mechanism (1), and comprises at least a support rod (21) and an expansion portion (22) arranged on the support rod (21); The expansion portion (22) comprises at least a plurality of expansion frames (23), the plurality of expansion frames (23) being arranged around the support rod (21), and a telescopic assembly (24) being arranged between the expansion frame (23) and the support rod (21); The telescopic assembly (24) is used to contract when disassembling the horizontal reel, so that the expansion part (22) and the support rod (21) pass through the cavity of the horizontal reel axis; and to extend when fixing the horizontal reel, so that the expansion frame (23) contacts the inner wall of the cavity of the horizontal reel axis; The unwinding support mechanism (1) comprises at least a first support frame (11) and a second support frame (12) for respectively supporting the two ends of the strapping tensioning mechanism (2); The first supporting frame (11) and the second supporting frame (12) are both provided with a planar rectangular frame and a vertical rectangular frame, the planar rectangular frame is in contact with the ground, and the vertical rectangular frame is vertically fixed on the planar rectangular frame; A guide rail groove (13) is provided on the vertical rectangular frame in a vertical direction; A roller is provided at the bottom of the planar rectangular frame; It also includes an unwinding support lifting mechanism (3), wherein the unwinding support lifting mechanism (3) is arranged on the first support frame (11) and the second support frame (12); The unwinding support lifting mechanism (3) at least comprises a driving part (31) and a support plate (32) for supporting the strap tensioning mechanism (2), wherein both ends of the support plate (32) are respectively connected to the guide rail grooves (13) on opposite sides of the vertical rectangular frame; the driving part (31) drives the support plate (32) to move up and down along the guide rail grooves (13); It also includes an unwinding support wheel group (4), wherein the unwinding support wheel group (4) is arranged on the support plate (32) and is used to contact the support rod (21) of the strapping tensioning mechanism (2); The unwinding support wheel group (4) comprises at least two rollers (41) parallel to the direction in which the support rod (21) is arranged, and the two rollers (41) are arranged side by side, and the support rod (21) is arranged between the two rollers (41) and can rotate between the two rollers (41).

2. The horizontal expansion rack unwinding device for large rolls according to claim 1, characterized in that: The telescopic assembly (24) comprises at least two hinged rods, and the ends of the two rods are respectively fixed to the expansion frame (23) and the support rod (21).

3. The horizontal expansion rack unwinding device for large rolls according to claim 2, characterized in that: Both ends of each expansion frame (23) are provided with telescopic components (24) to drive the expansion frame (23) to operate from both ends of the expansion frame (23).

4. The horizontal expansion rack unwinding device for large rolls according to claim 3, characterized in that: The support rod (21) is provided with a mounting collar (25), and the mounting collar (25) is used to fix the telescopic assembly (24).

5. The horizontal expansion rack unwinding device for large rolls according to claim 4, characterized in that: The support rod (21) and the mounting collar (25) are engaged with each other through a thread, and the thread extends along the axial direction of the support rod (21). When the support rod (21) is rotated, the mounting collar (25) is pushed to move axially relative to the support rod (21), thereby causing the expansion frame (23) to move away from or closer to the support rod (21) under the action of the telescopic assembly (24).

6. The horizontal expansion rack unwinding device for large rolls according to claim 5, characterized in that: The expansion portion (22) further includes a guide assembly (27) disposed between the expansion frame (23) and the support rod (21); The guide assembly (27) includes a guide plate (271) fixed on the mounting ring (25), and a movable plate (272) fixed on the expansion frame (23), wherein a guide groove (273) is provided on the movable plate (272), and the guide groove (273) is used to embed the guide plate (271); The movable plate (272) cooperates with the guide plate (271) through the guide groove (273) and is used to stably move the expansion frame (23) away from or close to the support rod (21) when the telescopic assembly (24) is telescoped.

7. The horizontal expansion rack unwinding device for super-large rolls according to claim 1, characterized in that: It also includes an unwinding power mechanism (5), which is arranged on one side of the unwinding support mechanism (1) and connected to the strapping tensioning mechanism (2) to drive the strapping tensioning mechanism (2) to rotate.

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