Mechanical vehicle for assisting film roll replacement of unreeling machine

Abstract

The utility model provides a mechanical vehicle for assisting an unreeling machine in replacing a film roll. The utility model provides a mechanical vehicle which comprises a vehicle body and a film roll bracket assembly used for containing film rolls. Wherein the vehicle body comprises a vehicle frame and a wheel assembly arranged below the vehicle frame; the film roll bracket assembly is fixed on the frame; the film roll bracket assembly has two states; in the first state, the film roll bracket assembly allows a film roll to roll up or down the film roll bracket assembly in a rolling mode, so that loading operation and unloading operation of the film roll are facilitated; and in the second state, the film roll bracket assembly clamps and fixes the film roll on the film roll bracket assembly so as to ensure that the film roll does not slide or shift in the moving process of the mechanical vehicle. According to the mechanical vehicle used for assisting the unreeling machine in replacing the film rolls, replacement, loading and unloading of the large film rolls can be achieved, and transportation and replacement of the heavy film rolls become easier, safer and more labor-saving.

Description

Technical Field

[0001] This application relates to the technical field of unwinding machines, and particularly to a mechanical cart for assisting an unwinding machine in replacing a film roll. Background Art

[0002] In production lines of materials such as papermaking, printing, textiles, and plastic films, it is necessary to unwind the raw materials in rolls at a uniform and stable speed for subsequent processing. As a device for unwinding the rolled film materials and preparing to enter the production process, the film unwinding machine (abbreviated as the unwinding machine) is widely used in the above fields.

[0003] The film roll of the unwinding machine is cylindrical, and the rotation of the film roll is driven by a core to achieve the unwinding function. Each film roll weighs 2.5 to 3 tons and has a length of 2 to 3 meters, making it one of the most core components of the unwinding machine. However, due to the large volume and heavy weight of the film roll, and its installation position being at the center of the unwinding machine, the installation space is very limited, posing great challenges to hoisting, loading, unloading, and transportation.

[0004] Therefore, it is necessary to design a device that can assist the unwinding machine in replacing the film roll to facilitate the ground handling and auxiliary replacement of the film roll. Utility Model Content

[0005] In view of this, this application provides a mechanical cart for assisting an unwinding machine in replacing a film roll, which is used to realize the replacement, loading, and unloading of larger film rolls, making the transportation and replacement of heavy film rolls simpler, safer, and more labor-saving.

[0006] Specifically, this application is implemented through the following technical solutions:

[0007] This application provides a mechanical cart for assisting an unwinding machine in replacing a film roll. The mechanical cart includes a vehicle body and a film roll bracket assembly for placing the film roll. Among them,

[0008] The vehicle body includes a vehicle frame and a wheel assembly disposed below the vehicle frame;

[0009] The film roll bracket assembly is fixed on the vehicle frame. Among them, the film roll bracket assembly has two states. In the first state, the film roll bracket assembly allows the film roll to roll onto or off the film roll bracket assembly in a rolling manner, facilitating the loading and unloading operations of the film roll. In the second state, the film roll bracket assembly clamps and fixes the film roll on the film roll bracket assembly to ensure that the film roll does not slide or shift during the movement of the mechanical cart.

[0010] Optionally, the mechanical cart further includes a positioning assembly, and the positioning assembly is disposed below the vehicle body. Among them,

[0011] The positioning component is used to fix the mechanical vehicle on the ground after the mechanical vehicle moves to the target position and allow the mechanical vehicle to move slightly within a limited range to precisely adjust the position of the mechanical vehicle.

[0012] Optionally, the film roll bracket assembly includes a first bracket and a second bracket; the first bracket and the second bracket are respectively arranged at both ends of the vehicle frame; wherein,

[0013] Both the first bracket and the second bracket include a fixing frame, a first bridging rotary flange and a second bridging rotary flange; the first bridging rotary flange and the second bridging rotary flange are arranged on the fixing frame in a manner that can rotate in a vertical plane;

[0014] Wherein, a space for accommodating the reel of the film roll is formed between the first bridging rotary flange and the second bridging rotary flange; the film roll bracket assembly is in the first state when the first bridging rotary flanges and the second bridging rotary flanges of the first bracket and the second bracket both rotate to the horizontal direction, and the film roll bracket assembly is in the second state when the first bridging rotary flanges and the second bridging rotary flanges of the first bracket and the second bracket both rotate to the vertical direction.

[0015] Optionally, a pin shaft is arranged at the position where each bridging rotary flange is fixed to the fixing frame; wherein, the pin shaft is used to lock the bridging rotary flange in the horizontal direction or the vertical direction.

[0016] Optionally, the positioning component includes a first positioning structure; wherein, the first positioning structure includes a first positioning frame, a first positioner, a first guiding groove and a first fixer; wherein,

[0017] The first positioning frame is fixed on the vehicle frame;

[0018] The first end of the first positioner is fixed on the first positioning frame, and the second end of the first positioner is inserted into the first guiding groove in a manner that can slide in the first guiding groove;

[0019] The first guiding groove is fixed on the first fixer;

[0020] The first fixer includes a plurality of fixing components; wherein, the plurality of fixing components are used to fix the first fixer on the ground.

[0021] Optionally, the positioning component includes a second positioning structure; wherein, the second positioning structure includes a second positioning frame, a second positioner, a second guiding groove, a second fixer and a second plug-in member; wherein,

[0022] The second positioning frame is fixed on the vehicle frame;

[0023] The first end of the second locator is fixed on the second positioning frame, and the second end of the second locator is inserted into the second guiding groove in a slidable manner within the second guiding groove;

[0024] The second guiding groove is fixed on the second fixator;

[0025] The second fixator includes a plurality of fixing components; wherein, the plurality of fixing components are used to fix the second fixator on the ground;

[0026] The second plug-in member is fixed on the second positioning frame, a through hole is provided in the second guiding groove, and the second plug-in member is pluggable into the through hole.

[0027] Optionally, the defined range is the range indicated by the axis direction of the film roll; the positioning component allows the mechanical vehicle to perform a fine shift in the axis direction of the film roll.

[0028] Optionally, a lapping portion is provided at the free end of each bridging rotary flange; wherein, the lapping portion is used to lap the bridging rotary flange on the film roll rack of the unwinder when the film roll bracket assembly is in the first state for film roll replacement.

[0029] Optionally, the wheel assembly includes two sets of wheels arranged along the forward direction, one set of wheels being directional wheels and the other set of wheels being universal wheels; wherein, when the film roll is fixed on the film roll bracket assembly, the axis direction of the film roll is consistent with the forward direction.

[0030] Optionally, the vehicle body is made of a metal material.

[0031] The mechanical vehicle provided in this application for assisting the unwinder in replacing the film roll is provided with a vehicle body and a film roll bracket assembly fixed on the vehicle body, and the film roll bracket assembly has two states. In this way, through simple state switching, the operator can quickly adjust the functions of the film roll bracket assembly, thereby realizing the loading, unloading and fixing of the film roll, and can provide an efficient, safe and convenient operation experience during the processes of film roll loading, unloading, transportation and replacement, and can improve work efficiency.

[0032] In addition, by providing a positioning component, the mechanical vehicle can be fixed on the ground to prevent any unnecessary movement during operation, effectively avoiding accidents or damages caused by the movement of the vehicle body, improving the overall operation safety and reducing potential risks; further, through the positioning component, the mechanical vehicle is allowed to perform precise fine-tuning after reaching the target position to ensure that the mechanical vehicle can be accurately aligned to the specified position. In this way, the precise docking between the film roll bracket assembly and the film roll rack can be realized, and the precision and accuracy of the roll changing operation can be improved. Description of the Drawings

[0033] Figure 1 Schematic diagram of the mechanical vehicle provided for this application to assist the unwind reel in replacing the film reel;

[0034] Figure 2 Schematic diagram of the film reel bracket assembly in the first state shown in an exemplary embodiment of this application;

[0035] Figure 3 Schematic diagram of the film reel bracket assembly in the second state shown in an exemplary embodiment of this application;

[0036] Figure 4 Schematic diagram of the mechanical vehicle provided in another exemplary embodiment of this application;

[0037] Figure 5 Schematic diagram of the first positioning component shown in an exemplary embodiment of this application;

[0038] Figure 6 Schematic diagram of the second positioning component shown in an exemplary embodiment of this application;

[0039] Figure 7 Partial schematic diagram of the second positioning component shown in an exemplary embodiment of this application.

[0040] Explanation of reference numerals:

[0041] 1: Vehicle body;

[0042] 11: Frame;

[0043] 12: Wheel assembly;

[0044] 2: Film reel bracket assembly;

[0045] 21: First bracket;

[0046] 22: Second bracket;

[0047] 211: Fixed frame;

[0048] 212: First bridging rotary flange;

[0049] 213: Second bridging rotary flange;

[0050] 214: Pin shaft;

[0051] 215: Lapping part;

[0052] 3: Positioning component;

[0053] 31: First positioning structure;

[0054] 32: Second positioning structure;

[0055] 311: First positioning frame;

[0056] 312: First locator;

[0057] 313: First guiding groove;

[0058] 314: First fixator;

[0059] 321: Second positioning frame;

[0060] 322: Second locator;

[0061] 323: Second guiding groove;

[0062] 324: Second fixator;

[0063] 325: Second plug-in and unplug component;

[0064] 326: Through hole. Detailed implementation manners

[0065] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application.

[0066] The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "the" and "said" used in the present application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0067] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0068] The mechanical vehicle provided by the present application for assisting the unwind reel in replacing the film reel can carry out ground handling and auxiliary replacement of the film reel. The process of transporting and installing the film reel by this vehicle only occupies the reserved maintenance passage space in the middle of the unwind reel equipment and has the function of assisting in installing the film reel.

[0069] The following specific embodiments are given to introduce the technical solutions of the present application in detail.

[0070] Figure 1 Schematic diagram of the mechanical vehicle provided for this application to assist the unwind reel in replacing the film reel. Please refer to Figure 1 , the mechanical vehicle provided in this embodiment includes a vehicle body 1 and a film reel bracket assembly 2 for placing the film reel; wherein,

[0071] The vehicle body 1 includes a vehicle frame 11 and a wheel assembly 12 provided below the vehicle frame;

[0072] The film reel bracket assembly 2 is fixed on the vehicle frame 11; wherein, the film reel bracket assembly 2 has two states; in the first state, the film reel bracket assembly 2 allows the film reel to roll onto or off the film reel bracket assembly 2 in a rolling manner, so as to facilitate the loading operation and unloading operation of the film reel; in the second state, the film reel bracket assembly 2 clamps and fixes the film reel on the film reel bracket assembly 2 to ensure that the film reel does not slide or shift during the movement of the mechanical vehicle.

[0073] Optionally, in a possible implementation manner, the vehicle body 1 is made of a metal material. Specifically, the metal material used for the vehicle body 1 is selected according to actual needs, and it is not limited in this embodiment. For example, in one embodiment, the vehicle body 1 can be made of steel; for another example, in another embodiment, the vehicle body 1 can be made of an aluminum alloy material.

[0074] In addition, the vehicle frame 11 can be a rectangular steel plate or a frame structure welded by multiple steel pipes, which is not limited in this embodiment. Further, the multiple steel pipes can be rectangular steel pipes or circular steel pipes, which is not limited in this embodiment.

[0075] Optionally, in a possible implementation manner, the wheel assembly 12 includes two groups of wheels arranged along the forward direction, one group of wheels is a fixed wheel and the other group of wheels is a universal wheel; wherein, when the film reel is fixed on the film reel bracket assembly 2, the axial direction of the film reel is consistent with the forward direction.

[0076] Specifically, along the forward direction (the axial direction of the film reel), two groups of wheels are provided, one group of wheels is a fixed wheel and the other group of wheels is a universal wheel, and each group of wheels includes two wheels. In addition, the wheels can be fixed at the four corners below the vehicle frame 11 by riveting or screwing, etc.

[0077] Specifically, the film reel bracket assembly 2 is firmly installed on the vehicle frame 11 to form a stable structure for supporting the film reel.

[0078] In specific implementation, the film reel bracket assembly 2 can be fixed on the vehicle frame 11 by welding, riveting, screwing, etc.

[0079] Specifically, the film roll bracket assembly 2 has two states. Figure 2 FIG. is a schematic diagram of the film roll bracket assembly shown in an exemplary embodiment of the present application in the first state. Figure 3 FIG. is a schematic diagram of the film roll bracket assembly shown in an exemplary embodiment of the present application in the second state. Please refer to Figure 2 and Figure 3 simultaneously. In the first state, the film roll bracket assembly 2 allows the film roll to be loaded or unloaded by rolling. In this way, by rolling for loading or unloading, the complexity of manual handling or mechanical assistance can be reduced, facilitating the loading and unloading operations of the film roll. Further, in the second state, the film roll bracket assembly 2 clamps and fixes the film roll thereon, so that it can be ensured that the film roll will not slide or shift during the movement of the mechanical vehicle, thus guaranteeing the safe transportation and storage of the film roll.

[0080] Referring to the previous description, it can be understood that the film roll bracket assembly 2 can flexibly adjust its state according to requirements, which is convenient for the loading and unloading operations of the film roll and ensures that the film roll can be safely fixed during the movement of the mechanical vehicle.

[0081] Optionally, please continue to refer to Figures 1 to 3 . In a possible implementation manner, the film roll bracket assembly 2 includes a first bracket 21 and a second bracket 22; the first bracket 21 and the second bracket 22 are respectively arranged at both ends of the vehicle frame 11; wherein,

[0082] both the first bracket 21 and the second bracket 22 include a fixing frame 211, a first bridging rotary flange 212, and a second bridging rotary flange 213; the first bridging rotary flange 212 and the second bridging rotary flange 213 are arranged on the fixing frame 211 in a manner that can rotate in the vertical plane;

[0083] wherein, a space for accommodating the reel of the film roll is formed between the first bridging rotary flange 212 and the second bridging rotary flange 213; the film roll bracket assembly 2 is in the first state when the first bridging rotary flanges 212 and the second bridging rotary flanges 213 of the first bracket 21 and the second bracket 22 both rotate to the horizontal direction, and the film roll bracket assembly 2 is in the second state when the first bridging rotary flanges 212 and the second bridging rotary flanges 213 of the first bracket 21 and the second bracket 22 both rotate to the vertical direction.

[0084] Specifically, the film roll bracket assembly 2 is composed of two brackets, and these two brackets are arranged at both ends in the front-back direction of the vehicle frame 11. Further, the structures of these two brackets are the same, and both include a fixing frame 211, a first bridging rotary flange 212, and a second bridging rotary flange 213.

[0085] Specifically, the fixing bracket 211 can be a trapezoidal bracket. Further, the first bridging rotating flange 212 and the second bridging rotating flange 213 can be connected to the fixing bracket 211 through bearings, pin shafts or other rotating connectors to allow the bridging rotating flanges to rotate in the vertical plane.

[0086] Optionally, a pin shaft 214 is provided at the position where each bridging rotating flange is fixed to the fixing bracket 211; wherein, the pin shaft 214 is used to lock the bridging rotating flange in the horizontal direction or the vertical direction.

[0087] Specifically, corresponding pin shaft hole positions are provided on each bridging rotating flange and the fixing bracket 211, and the pin shaft 214 is inserted through the pin shaft hole positions to fix the position of the bridging rotating flange. That is, when the bridging rotating flange rotates to the horizontal or vertical direction, the pin shaft 214 will be inserted into the preset pin shaft hole positions to ensure that the flange is stable and immovable in the required direction. In other words, when the bridging rotating flange needs to be fixed in the horizontal direction or the vertical direction, the pin shaft 214 will be inserted into the corresponding hole positions to lock the bridging rotating flange in that direction. If the direction of the bridging rotating flange needs to be changed, first remove or unlock the pin shaft, then rotate the bridging rotating flange to a new position, and then insert the pin shaft 214 to lock it.

[0088] See Figure 2 , when the first bridging rotating flange 212 and the second bridging rotating flange 213 in the first bracket 21 and the second bracket 22 are both rotated to the horizontal direction, the first bridging rotating flange 212 and the second bridging rotating flange 213 are locked in the horizontal direction by using the pin shaft 214. At this time, when the membrane roll bracket assembly 2 is in the first state, the membrane roll can be rolled onto or off the shelf.

[0089] Further, referring to Figure 3 , when the first bridging rotating flange 212 and the second bridging rotating flange 213 in the first bracket 21 and the second bracket 22 are both rotated to the vertical direction, the first bridging rotating flange 212 and the second bridging rotating flange 213 are locked in the vertical direction by using the pin shaft 214. At this time, when the membrane roll bracket assembly 2 is in the second state, the membrane roll can be fixed on the membrane roll bracket assembly 2, which can prevent the membrane roll from falling off the bracket during transportation.

[0090] Optionally, please continue to refer to Figure 1 , in a possible implementation manner, a lapping portion 215 is provided at the free end of each bridging rotating flange; wherein, the lapping portion 215 is used to lap the bridging rotating flange on the membrane roll rack of the unwinder when the membrane roll bracket assembly 2 is in the first state for membrane roll replacement.

[0091] Specifically, the lapping portion 215 is usually designed with a certain shape and size to ensure accurate docking with the membrane roll rack of the unwinder. For example, inFigure 2 and Figure 3 In the illustrated example, the overlapping portion 215 is provided in an L shape.

[0092] The mechanical vehicle provided in this embodiment is provided with a vehicle body and a film roll bracket assembly fixed on the vehicle body, and the film roll bracket assembly has two states. In this way, through simple state switching, the operator can quickly adjust the functions of the film roll bracket assembly, thereby realizing the loading, unloading and fixing of the film roll, and can provide an efficient, safe and convenient operation experience during the loading, unloading, transportation and replacement of the film roll, and can improve work efficiency.

[0093] In addition, for the mechanical vehicle provided in this embodiment, by providing an overlapping portion at the free end of the bridging rotary flange, when the film roll bracket assembly is in the first state, it can be conveniently docked with the film roll rack of the unwinder, thereby simplifying the film roll replacement process and making the film roll replacement operation more efficient and safe.

[0094] Specifically, Figure 4 The following is a schematic diagram of a mechanical vehicle provided in another exemplary embodiment of the present application. Please refer to Figure 4 In this embodiment, on the basis of the above embodiment, the mechanical vehicle further includes a positioning assembly 3, and the positioning assembly 3 is disposed below the vehicle body 1; wherein,

[0095] The positioning assembly 3 is used to fix the mechanical vehicle on the ground after the mechanical vehicle moves to the target position, and allows the mechanical vehicle to move slightly within a limited range to precisely adjust the position of the mechanical vehicle.

[0096] It should be noted that in a possible implementation manner, the limited range may be the range indicated by the film roll axis direction or the range indicated by the direction perpendicular to the film roll axis direction. In this embodiment, it is not limited thereto.

[0097] Specifically, after the mechanical vehicle moves to the target position, the positioning assembly 3 can fix the vehicle body 1 on the ground. For example, in a possible implementation manner, the positioning assembly 3 can fix the vehicle body 1 on the ground by mechanical clamping, adsorption or other means to prevent the mechanical vehicle from moving due to external interference or vibration during the working process, thereby ensuring its stability.

[0098] Furthermore, in addition to the fixing function, the positioning assembly 3 also allows the mechanical vehicle to make small adjustments within a limited range to precisely adjust the position of the mechanical vehicle. For example, when the mechanical vehicle needs to perform a roll change task at a specific position, fine adjustment can help it accurately reach the expected position.

[0099] In specific implementation, when the robotic vehicle moves to the target position, the positioning component 3 will take measures (such as locking devices, adsorption devices, etc.) to fix the robotic vehicle on the ground. Further, after fixation, the positioning component 3 allows the robotic vehicle to move slightly within a certain range to determine that the position accuracy of the robotic vehicle meets the task requirements.

[0100] The design of the positioning component 3 not only provides a fixing function but also increases the fine-tuning ability, enabling the robotic vehicle to further precisely adjust its position after reaching the target position, thereby improving the overall accuracy and stability.

[0101] Preferably, the defined range is the range indicated by the axis direction of the film roll; the positioning component 3 allows the robotic vehicle to perform micro-displacement in the axis direction of the film roll.

[0102] In specific implementation, when replacing the film roll, the target position can be the maintenance passage space reserved on both sides of the unwinder. After the robotic vehicle moves to the target position, the overlapping part 215 at the free end of the bridging rotary flange may not exactly correspond to the film roll rack of the unwinder. Therefore, it is necessary to perform micro-displacement of the robotic vehicle within the defined range along the axis direction of the film roll to achieve precise docking of the overlapping part 215 with the film roll rack.

[0103] It should be noted that the specific range of the defined range is set according to actual needs and is not limited in this embodiment.

[0104] Optionally, in a possible implementation manner, the positioning component 3 may include a first positioning structure 31 and a second positioning structure 32.

[0105] Specifically, Figure 5 For the schematic diagram of the first positioning component shown in an exemplary embodiment of the present application, please refer to Figure 5 , the first positioning structure 31 includes a first positioning frame 311, a first positioner 312, a first guide groove 313, and a first fixator 314; wherein,

[0106] The first positioning frame 311 is fixed on the vehicle frame 11;

[0107] The first end of the first positioner 312 is fixed on the first positioning frame 311, and the second end of the first positioner 312 is inserted into the first guide groove 313 in a slidable manner within the first guide groove 313;

[0108] The first guide groove 313 is fixed on the first fixator 314;

[0109] The first fixator 314 includes a plurality of fixing components; wherein, the plurality of fixing components are used to fix the first fixator 314 on the ground.

[0110] Specifically, please refer to Figure 5 , the first positioning frame 311 can be fixed on the vehicle frame 11 by welding. The first end of the first positioner 312 can be fixed on the first positioning frame 311 by welding or can be fixed on the first positioning frame 311 by screw connection. Further, the first guiding groove 313 is arranged below the first positioning frame 311, and the second end of the first positioner 312 is inserted into the first guiding groove 313 in a manner that can slide within the first guiding groove 313. The first guiding groove 313 can be fixed on the first fixator 314 by welding or can be fixed on the first fixator 314 by screw connection. It should be noted that the first positioner 312 slides along the film roll axis direction within the first guiding groove 313, and the range defined by the first guiding groove 313 is the range within which the machine vehicle can move slightly.

[0111] Further, the first fixator 314 includes a plurality of fixing components. By drilling holes on the surface of the first fixator 314, the fixing components are installed in the holes, and the fixing components can be bolts or screws, etc. It should be noted that the number of fixing components included in the first fixator 314 is set according to actual needs and is not limited in this embodiment. For example, in one embodiment, a plurality of fixing components can be evenly arranged circumferentially on the first fixator 314.

[0112] Specifically, Figure 6 is a schematic diagram of a second positioning component shown in an exemplary embodiment of the present application. Figure 7 is a partial schematic diagram of a second positioning component shown in an exemplary embodiment of the present application. Please refer to Figure 6 and Figure 7 simultaneously. The second positioning structure 32 includes a second positioning frame 321, a second positioner 322, a second guiding groove 323, a second fixator 324, and a second plug-in member 325. Among them,

[0113] the second positioning frame 321 is fixed on the vehicle frame 11;

[0114] the first end of the second positioner 322 is fixed on the second positioning frame 321, and the second end of the second positioner 322 is inserted into the second guiding groove 323 in a manner that can slide within the second guiding groove 323;

[0115] the second guiding groove 323 is fixed on the second fixator 324;

[0116] the second fixator 324 includes a plurality of fixing components. Among them, the plurality of fixing components are used to fix the second fixator 324 on the ground;

[0117] The second plug-in member 325 is fixed on the second positioning bracket. A through hole 326 is provided in the second guiding groove 323, and the second plug-in member 325 is pluggable into the through hole.

[0118] Specifically, the second positioning bracket 321 is fixed on the vehicle frame 11 by welding. The second guiding groove 323 is fixed on the second fixator 324, and the second fixator 324 is arranged below the second positioning bracket 321. The first end of the second positioner 322 can be fixed on the second positioning bracket 321 by welding or can be fixed on the first positioning bracket 311 by screw connection. The second end of the second positioner 322 is inserted into the second guiding groove 323 in a manner that can slide in the second guiding groove 323.

[0119] The second guiding groove 323 can be fixed on the second fixator 324 by welding or can be fixed on the second fixator 324 by screw connection. It should be noted that the second positioner 322 slides in the second guiding groove 323 along the axis direction of the film roll, and the range defined by the second guiding groove 323 is the range within which the mechanical vehicle can move slightly.

[0120] Further, the second fixator 324 includes a plurality of fixing components. The fixing components included in the second fixator 324 can be the same as or different from the fixing components included in the first fixator 314. The fixing components included in the second fixator 324 are also installed on the second fixator 324 by drilling holes in the second fixator 324.

[0121] The second plug-in member 325 is fixed on the second positioning bracket 321. A through hole 326 is provided in the second guiding groove 323, and the second plug-in member 325 is pluggable into the through hole.

[0122] Specifically, when the unwind reel needs to be replaced, place the film reel on the trolley. At this time, keep the film reel bracket assembly 2 in the second state to clamp the film reel on the film reel bracket assembly 2, ensuring that the film reel does not slide or shift during the movement of the trolley. Further, move the trolley to the target position and fix the trolley to the ground through the fixing assembly 3. At this time, along the axis direction of the film reel, the position of the trolley can be finely adjusted through the first positioning structure 31 and the second positioning structure 32 in the positioning assembly 3. After adjusting the position of the trolley, lower the second plug-in member 325 in the second positioning structure 32 so that it inserts into the through hole 326 to fix the trolley, ensuring that the first bracket 21 and the second bracket 22 do not move during the film reel replacement process. Further, rotate the first bridging rotary flange 212 and the second bridging rotary flange 213 of the first bracket 21 and the second bracket 22 to the horizontal direction, keep the film reel bracket assembly 2 in the first state, and overlap the overlapping portion 215 at the free end of the bridging rotary flange on the film reel rack of the unwind reel. Roll the film reel on the overlapped bridge to replace the film reel. After the film reel replacement is completed, let the film reel bracket assembly 2 return to the second state, lift the second plug-in member 325, and push the trolley out of the target position.

[0123] For the trolley provided in this embodiment, on the one hand, by setting the positioning assembly, the trolley can be fixed to the ground to prevent any unnecessary movement during operation, effectively avoiding accidents or damages caused by the movement of the vehicle body, improving the safety of the overall operation, and reducing potential risks. On the other hand, through the positioning assembly, the trolley is allowed to be precisely fine-tuned after reaching the target position to ensure that the trolley can be accurately aligned to the specified position. In this way, the precise docking of the film reel bracket assembly and the film reel rack can be achieved, improving the accuracy and precision of the reel replacement operation.

[0124] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A mechanical vehicle for assisting an unwinder in replacing a film roll, characterized in that: The mechanical vehicle comprises a vehicle body and a film roll bracket assembly for placing a film roll; wherein, The vehicle body includes a frame and a wheel assembly arranged below the frame; The film roll bracket assembly is fixed on the vehicle frame; wherein, the film roll bracket assembly has two states; in the first state, the film roll bracket assembly allows the film roll to be rolled onto or off the film roll bracket assembly by rolling, so as to facilitate the loading and unloading operations of the film roll; in the second state, the film roll bracket assembly clamps the film roll onto the film roll bracket assembly to ensure that the film roll does not slide or shift during the movement of the mechanical vehicle.

2. The mechanical vehicle according to claim 1, characterized in that: The mechanical vehicle further comprises a positioning assembly, which is arranged below the vehicle body; wherein, The positioning assembly is used to fix the mechanical vehicle on the ground after the mechanical vehicle moves to the target position, and to allow the mechanical vehicle to move slightly within a limited range so as to accurately adjust the position of the mechanical vehicle.

3. The mechanical vehicle according to claim 1, characterized in that: The film roll bracket assembly includes a first bracket and a second bracket; the first bracket and the second bracket are respectively arranged at two ends of the frame; wherein, The first bracket and the second bracket each include a fixing frame, a first bridging rotating flange and a second bridging rotating flange; the first bridging rotating flange and the second bridging rotating flange are arranged on the fixing frame in a manner of being rotatable in a vertical plane; Wherein, a space for accommodating a reel of a film roll is formed between the first bridging rotating flange and the second bridging rotating flange; the film roll bracket assembly is in the first state when the first bridging rotating flange and the second bridging rotating flange of the first bracket and the second bracket are both rotated to a horizontal direction, and the film roll bracket assembly is in the second state when the first bridging rotating flange and the second bridging rotating flange of the first bracket and the second bracket are both rotated to a vertical direction.

4. The mechanical vehicle according to claim 3, characterized in that: A pin is provided at the position where each bridging rotating flange is fixed to the fixing frame; wherein the pin is used to lock the bridging rotating flange in a horizontal direction or a vertical direction.

5. The mechanical vehicle according to claim 2, characterized in that: The positioning assembly includes a first positioning structure; wherein the first positioning structure includes a first positioning frame, a first positioner, a first guide groove and a first fixer; wherein, The first positioning frame is fixed on the vehicle frame; The first end of the first positioner is fixed to the first positioning frame, and the second end of the first positioner is inserted into the first guide groove in a manner that it can slide in the first guide groove; The first guide groove is fixed on the first fixer; The first fixer includes a plurality of fixing components, wherein the plurality of fixing components are used to fix the first fixer on the ground.

6. The mechanical vehicle according to claim 2 or 5, characterized in that: The positioning assembly includes a second positioning structure; wherein the second positioning structure includes a second positioning frame, a second positioner, a second guide slot, a second fixer and a second plug-in member; wherein, The second positioning frame is fixed on the vehicle frame; The first end of the second positioner is fixed to the second positioning frame, and the second end of the second positioner is inserted into the second guide groove in a manner that it can slide in the second guide groove; The second guide groove is fixed on the second fixture; The second fixer includes a plurality of fixing components; wherein the plurality of fixing components are used to fix the second fixer on the ground; The second plugging member is fixed on the second positioning frame. The second guide groove has a through hole in it. The second plugging member can be plugged in and out of the through hole.

7. The mechanical vehicle according to claim 2, characterized in that: The limited range is the range indicated by the film roll axis direction; the positioning assembly allows the mechanical vehicle to move slightly in the film roll axis direction.

8. The mechanical vehicle according to claim 3, characterized in that: A lap portion is provided at the free end of each bridging rotating flange, wherein the lap portion is used to overlap the bridging rotating flange on the film roll rack of the unwinding machine when the film roll bracket assembly is in the first state, so as to replace the film roll.

9. The mechanical vehicle according to claim 1, characterized in that: The wheel assembly includes two groups of wheels arranged along the forward direction, one group of wheels are fixed wheels, and the other group of wheels are universal wheels; wherein, when the film roll is fixed on the film roll bracket assembly, the axial direction of the film roll is consistent with the forward direction.

10. The mechanical vehicle according to claim 1, characterized in that The vehicle body is made of metal material.

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