Preservative film rewinding device

Abstract

The utility model relates to a preservative film rewinding device. A second guide inclined plate is matched with a moving assembly to facilitate replacement of a rewinding drum, when the rewinding drum is replaced, a reciprocating lead screw controls a rewinding structure to move to a preset position, an electric push rod controls a moving plate to move in the direction of the second guide inclined plate, a second limiting inclined block pushes a connecting block, a Y-shaped supporting frame in the vertical state inclines, and the rewinding drum is replaced. After the rewinding drum slides into the clamping groove, an electric push rod controls a movable plate to be away from a second guide inclined plate, when a torsional spring is reset, a Y-shaped supporting frame is synchronously driven to be reset to be in a vertical state, the electric push rod drives the movable plate to move towards the rewinding structure, and then the rewinding drum is driven to move towards the rewinding structure; and through cooperation of the second guide inclined plate, the moving assembly and the rewinding structure, the rewinding barrel can be automatically replaced.

Description

Technical Field

[0001] This utility model relates to the field of plastic wrap rewinding technology, and in particular to a plastic wrap rewinding device. Background Technology

[0002] After production, the cling film needs to be rewound using a rewinding device. For example, a PBAT cling film rewinding device disclosed in Chinese Patent Application No. CN202223545679.1 describes a process where a second motor drives a stop bar to a vertical position, placing the roll on an inclined platform for overlap. At this point, the circle of the roll coincides with the center of the turntable. When the first cylinder pushes the fixing plate to move, the two turntables clamp the roll, allowing the PBAT cling film to pass between the cutter holder and the sleeve plate and wrap around the surface of the roll. When the first motor drives the pressure roller to rotate, the gear meshing drives the cutting roller to rotate synchronously, and the pulley and belt... The transmission drives the turntable and the roll to rotate simultaneously, rewinding the PBAT cling film. Meanwhile, the cutting roller has intermittently spaced serrations to facilitate tearing the cling film. When the roll reaches a certain thickness, it contacts a switch. At this point, the controller of the second cylinder extends it, causing the sleeve to contact the blade holder. Continuing to move, the blade extends and moves into the blade groove for cutting. After the second cylinder retracts, the spring's elasticity pushes the sleeve back to its original position, placing the blade inside the sleeve. Simultaneously, the stop lever, driven by the second motor, moves into the groove. The shortening of the first cylinder separates both ends of the roll from the turntable, allowing the cling film to roll down the inclined platform for rapid unloading. However, this system presents the following technical problems:

[0003] The roll of the above structure is installed in the middle of the rewinding device. After the roll is rewound, the blade cuts the plastic wrap and the plastic wrap is fed under the guidance of the inclined table. However, when the above structure is used for rewinding again, the roll needs to be installed manually, which is inconvenient. Utility Model Content

[0004] To address the inconvenience of manually installing the reel as mentioned in the background section, this utility model provides the following technical solution:

[0005] A plastic wrap rewinding device includes a rewinding structure for controlling the rewinding cylinder to rewind the plastic wrap;

[0006] The lower end of the rewinding structure is equipped with a rewinding table for limiting the rewinding structure.

[0007] The rewinding table includes a limiting frame, and the right end of the limiting frame is equipped with a guide inclined plate and a moving assembly for easy replacement of the rewinding cylinder. The rewinding table also includes a reciprocating screw for guiding the rewinding structure.

[0008] This invention allows for automatic replacement of the rewinding cylinder during the rewinding of cling film through the cooperation of the guide inclined plate, the moving component, and the rewinding structure.

[0009] Furthermore, the limiting frame is equipped with multiple guide rollers for guiding the plastic wrap in the middle, and a guide ramp for guiding the rewound plastic wrap is installed on the right side of the limiting frame. A cutting blade for cutting the plastic wrap is installed at the right end of the limiting frame, and limiting frames are installed on both sides of the limiting frame. A motor for controlling the rotation of the reciprocating screw is installed at the lower end of the reciprocating screw. The guide rollers facilitate the movement of the plastic wrap towards the rewinding drum, and the guide ramp facilitates the movement of the rewound plastic wrap towards one side of the limiting frame. After the motor starts, it drives the reciprocating screw to rotate, causing the rewinding structure to move up and down within the limiting frame.

[0010] Furthermore, the front and rear ends of the guide inclined plate two are equipped with a limiting plate one for limiting the rewinding drum. A limiting inclined block one is installed on the left side of the limiting plate one, and a limiting inclined block two is installed on the left side of the guide inclined plate two. The limiting plate one and the limiting inclined block one are used to position the rewinding drum.

[0011] Furthermore, the moving component includes a moving plate, with connecting rods installed at both ends of the moving plate. A fixing block is installed in the middle of the connecting rods. A Y-shaped support frame for moving the rewinding drum is sleeved on one end of the connecting rods. A guide plate for limiting the Y-shaped support frame is installed on one end of the connecting rods. A torsion spring for controlling the Y-shaped support frame to reset is sleeved on one end of the connecting rods. A limiting rod is installed on one side of the moving component. When the moving plate approaches the guide inclined plate, the Y-shaped support frame can rotate under the action of the limiting inclined block, so as to limit the rewinding drum.

[0012] Furthermore, a limiting plate two for limiting the limiting rod is installed on the middle left side of the guide inclined plate two. An electric push rod for controlling the movement of the moving plate is installed on one side of the limiting plate two. By activating the limiting plate two, the moving component can be controlled to move in the direction of the guide inclined plate two or driven to move in the direction of the rewinding structure.

[0013] Furthermore, one end of the Y-shaped support frame is machined with a slot for placing the rewinding cylinder, a positioning slider is installed on one side of the Y-shaped support frame, and a connecting block that abuts against the two limiting inclined blocks is installed on one side of the Y-shaped support frame. When the connecting block abuts against the two limiting inclined blocks, it causes the Y-shaped support frame to flip, making it easier for the rewinding cylinder to slide into the slot.

[0014] Furthermore, the guide plate has an arc-shaped groove on the side facing the Y-shaped support frame for limiting the positioning slider. A key block is installed on the side of the guide plate facing the connecting rod. A bolt for fixing the guide plate is installed in the middle of the guide plate. While the guide plate limits the Y-shaped support frame, the arc-shaped groove simultaneously limits the positioning slider.

[0015] Furthermore, a lead screw nut is installed on one side of the control box to cooperate with the reciprocating lead screw to control the up and down movement of the control box. A lead screw nut is installed on one side of the control box. A connecting rod two for controlling the movement of the first rotating component is installed at the upper end of the lead screw nut. A reciprocating lead screw is installed at one end of the lead screw nut. A motor three for controlling the rotation of the reciprocating lead screw is installed inside the control box. The rewinding structure includes a limit box. A U-shaped rod for limiting the limit box is installed at the upper end of the control box. A second rotating component for cooperating with the first rotating component to limit the rewinding drum is installed at one end of the limit box. When the motor two controls the rotation of the first rotating component, it synchronously controls the rewinding drum to rewind the cling film. When the lead screw nut drives the connecting rod two to control the movement of the first rotating component, it facilitates the disassembly and assembly of the rewinding drum.

[0016] Furthermore, the first rotating assembly includes a limiting plate, a sleeve is installed on the side of the limiting plate facing the rewinding drum, a sharp protrusion is installed on the side of the limiting plate facing the rewinding drum, a connecting rod three is installed on the other side of the limiting plate, a slider one is installed on one side of the connecting rod three, a slider two is installed on the outer wall of the slider one, the first rotating assembly includes a connecting sleeve for limiting the slider one, and the connecting sleeve is installed on the output shaft of the motor two, the inner wall of the connecting sleeve is provided with a groove for limiting the slider two, and a spring for controlling the reset of the limiting plate is installed inside the connecting sleeve. By moving the slider one inside the connecting sleeve, the first rotating assembly and the second rotating assembly can move away from each other, so as to facilitate the disassembly and assembly of the rewinding drum.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The guide ramp and moving assembly facilitate the replacement of the rewinding drum. During replacement, the reciprocating screw controls the rewinding structure to move to a preset position, and the electric push rod controls the moving plate to move towards the guide ramp. The limiting ramp pushes the connecting block, causing the vertical Y-shaped support frame to tilt, so that the rewinding drum can slide into the slot. After the rewinding drum slides into the slot, the electric push rod controls the moving plate to move away from the guide ramp. When the torsion spring resets, it simultaneously drives the Y-shaped support frame to reset to a vertical position. The electric push rod drives the moving plate to move towards the rewinding structure, which in turn drives the rewinding drum to move towards the rewinding structure, so that the rewinding structure can clamp the rewinding drum. Through the cooperation of the guide ramp, the moving assembly, and the rewinding structure, the rewinding drum can be replaced automatically.

[0019] 2. The spring pushes the limiting plate towards the rewinding drum, causing the first rotating component to clamp the rewinding drum in conjunction with the second rotating component. When the rewinding drum is being wound up, the second motor controls the connecting sleeve to rotate, and the connecting sleeve synchronously drives the first slider to rotate. Under the transmission of the third connecting rod and the limiting plate, the rewinding drum rotates synchronously to wind up the cling film. After winding is completed, the third motor starts and drives the reciprocating screw to rotate, causing the screw nut to drive the second connecting rod towards the limiting plate. Finally, the second connecting rod pushes the limiting plate towards the connecting sleeve, thereby releasing the clamping of the rewinding drum, which can then fall onto the first guide inclined plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the rewinding table of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the guide ramp and the moving assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the Y-shaped support frame of this utility model;

[0024] Figure 5 This is a schematic diagram of the guide plate of this utility model;

[0025] Figure 6 This is a schematic diagram of the rewinding structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the first rotating component of this utility model.

[0027] The following is a list of component names represented by the reference numerals in the attached figures:

[0028] 10-Rewinding drum, 100-Rewinding table, 110-Limiting frame, 111-Guide roller, 112-Guide inclined plate one, 113-Cut blade, 120-Limiting frame, 130-Reciprocating screw, 131-Motor one, 140-Guide inclined plate two, 141-Limiting plate one, 142-Limiting inclined block one, 143-Limiting inclined block two, 144-Electric push rod, 145-Limiting plate two, 150-Moving component, 151-Moving plate, 152-Connecting rod one, 153-Fixing block, 154-Torsion spring, 155-Limiting rod, 20-Y-shaped support frame, 21-Slot, 22-Positioning slider, 23-Connecting block, 30-Guide disc, 31-Arc groove, 32-Key block, 33-Bolt;

[0029] 200-Rewinding structure, 210-Control box, 211-Lead screw nut, 212-Motor II, 213-Motor III, 214-U-shaped rod, 220-First rotating assembly, 221-Limiting plate, 222-Sleeve, 223-Sharp protrusion, 224-Connecting rod III, 225-Slider I, 226-Slider II, 227-Connecting sleeve, 228-Slide groove, 229-Spring, 230-Lead screw nut, 231-Connecting rod II, 232-Reciprocating lead screw, 240-Limiting box, 241-Second rotating assembly. Detailed Implementation

[0030] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings. Example 1

[0031] Please see Figures 1-5 This utility model provides a plastic wrap rewinding device, including a rewinding structure 200 for controlling the rewinding cylinder 10 to rewind the plastic wrap.

[0032] A rewinding table 100 for limiting the rewinding structure 200 is movably installed at the lower end of the rewinding structure 200. The rewinding table 100 includes a limiting frame 110. Multiple guide rollers 111 for guiding the plastic wrap are installed in the middle of the limiting frame 110. A guide inclined plate 112 for guiding the rewound plastic wrap is installed on the right side of the limiting frame 110. The left horizontal height of the guide inclined plate 112 is higher than the right horizontal height of the guide inclined plate 112 to facilitate the plastic wrap rolling to the right. A cutting blade 11 for cutting the plastic wrap is installed at the right end of the limiting frame 110. When the cling film is rolled up, it moves towards the rewinding drum 10 by the guide roller 111 so that the cling film can be rolled up by the rewinding drum 10. After the cling film is rewound, it is cut by the cutter 113. Limiting frames 120 are fixedly installed on both sides of the limiting frame 110. When the rewinding structure 200 is at the upper end of the limiting frame 120, the rewinding drum 10 is replaced. When the rewinding structure 200 is at the lower end of the limiting frame 120, the cling film is rewound. The front and rear sides of the rewinding structure 200 move up and down within the limiting frame 120.

[0033] The right end of the limiting frame 110 is equipped with a guide ramp 140 and a moving assembly 150 for easy replacement of the rewinding drum 10. The right side of the guide ramp 140 is horizontally higher than the left side, facilitating the movement of multiple rewinding drums 10 to the left when placed on the guide ramp 140. Limiting plates 141 for limiting the rewinding drum 10 are fixedly installed at both ends of the guide ramp 140. A limiting block 142 is fixedly installed on the left side of the limiting plate 141, limiting the central axis of the rewinding drum 10 so that the rewinding drum 10 cannot move further to the left after its central axis rests on the limiting block 142. A limiting block 143 is fixedly installed on the left side of the guide ramp 140 by bolts. The rewinding table 100 includes a reciprocating screw 130 for guiding the rewinding structure 200. The reciprocating screw 130 is installed in a limiting frame 120 at the rear end of the limiting frame 110. A guide rod for limiting the rewinding structure 200 is installed in the limiting frame 120 at the front end of the limiting frame 110, so that the rewinding structure 200 can only move up and down. A motor 131 for controlling the rotation of the reciprocating screw 130 is installed at the lower end of the reciprocating screw 130. The motor 131 is located at the bottom of the limiting frame 120. By starting the motor 131, the reciprocating screw 130 rotates synchronously, thereby driving the rewinding structure 200 to move up and down, so as to facilitate the replacement of the rewinding drum 10.

[0034] The moving component 150 includes a moving plate 151. Connecting rods 152 are fixedly installed at both ends of the moving plate 151. A fixing block 153 is fixedly installed in the middle of the connecting rods 152. A Y-shaped support frame 20 for moving the rewinding drum 10 is sleeved on one end of the connecting rods 152. A guide plate 30 for limiting the Y-shaped support frame 20 is installed on one end of the connecting rods 152. A torsion spring 154 for controlling the Y-shaped support frame 20 to reset is sleeved on one end of the connecting rods 152. One end of the torsion spring 154 is fixed on the fixing block 153, and the other end of the torsion spring 154 is fixed on the Y-shaped support frame 20, so that when the torsion spring 154 resets, it drives the Y-shaped support frame 20 to reset synchronously.

[0035] A limiting rod 155 is fixedly installed on one side of the movable component 150. A limiting plate 145 for limiting the limiting rod 155 is fixedly installed on the middle left side of the guide plate 140. The limiting plate 145 has a cavity in the middle for the limiting rod 155 to extend and retract. An electric push rod 144 for controlling the movement of the movable plate 151 is installed on one side of the limiting plate 2 145. When the electric push rod 144 is activated, the movable plate 151 is moved away from and closer to the guide inclined plate 2 140. When the movable plate 151 moves closer to the guide inclined plate 2 140, the connecting rod 152 simultaneously moves the Y-shaped support frame 20 towards the guide inclined plate 2 140. The limiting inclined block 2 143 pushes one end of the Y-shaped support frame 20, causing the Y-shaped support frame 20 to rotate so that the rewinding drum 10 can be placed on the Y-shaped support frame 20. When the electric push rod 144 controls the movable plate 151 to move away from the guide inclined plate 2 140, the connecting rod 152 simultaneously moves the Y-shaped support frame 20 away from the guide inclined plate 2 140. When the Y-shaped support frame 20 moves away from the guide inclined plate 2 140, the torsion spring 154 controls the Y-shaped support frame 20 to reset, so as to move the rewinding drum 10 on the Y-shaped support frame 20 towards the rewinding structure 200.

[0036] One end of the Y-shaped support frame 20 is machined with a slot 21 for placing the rewinding drum 10. A positioning slider 22 is fixedly installed on the side of the Y-shaped support frame 20 facing the guide plate 30. A connecting block 23 that abuts against the limiting inclined block 143 is fixedly installed on one side of the Y-shaped support frame 20. When the Y-shaped support frame 20 moves toward the guide inclined plate 140, the limiting inclined block 143 pushes the connecting block 23, causing the Y-shaped support frame 20 to rotate. The side of the Y-shaped support frame 20 with the slot 21 rotates to the right. The movement causes the outer wall of the Y-shaped support frame 20 to push the rewinding drum 10 to the right until the rewinding drum 10 is inserted into the slot 21. Then, the electric push rod 144 controls the moving plate 151 to move away from the guide inclined plate 140. The connecting rod 152 simultaneously drives the Y-shaped support frame 20 away from the guide inclined plate 140, so that the connecting block 23 moves away from the limiting inclined block 143. When the fixing block 153 is reset, it drives the Y-shaped support frame 20 to flip and become vertical, so as to drive the rewinding drum 10 to move in the direction of the rewinding structure 200.

[0037] The guide plate 30 has an arc-shaped groove 31 on the side facing the Y-shaped support frame 20 for limiting the positioning slider 22. When the positioning slider 22 is in the groove of the arc-shaped groove 31, the Y-shaped support frame 20 is in a vertical state, the positioning slider 22 is in the groove of the arc-shaped groove 31, the Y-shaped support frame 20 is in an inclined state, and the positioning slider 22 slides in the groove of the arc-shaped groove 31. A key block 32 is fixedly installed on the side of the guide plate 30 facing the connecting rod 152. The connecting rod 152 and the guide plate 30 are connected by a key to facilitate the positioning of the guide plate 30. A keyway is opened on the side of the connecting rod 152 for the key block 32 to be inserted. A bolt 33 is installed in the middle of the guide plate 30 to facilitate the fixing of the guide plate 30. The bolt 33 is screwed into the threaded hole on the side wall of the connecting rod 152, thereby fixing the guide plate 30 to one side of the connecting rod 152, so that the guide plate 30 limits the Y-shaped support frame 20.

[0038] The guide ramp 140, in conjunction with the moving assembly 150, facilitates the replacement of the rewinding drum 10. When replacing the rewinding drum 10, the reciprocating screw 130 controls the rewinding structure 200 to move to a preset position. The electric push rod 144 controls the moving plate 151 to move towards the guide ramp 140. The limiting ramp 143 pushes the connecting block 23, causing the vertical Y-shaped support frame 20 to tilt, so that the rewinding drum 10 can slide into the slot 21. After the rewinding drum 10 slides into the slot 21, the electric push rod 144 controls the moving plate 151 to move away from the guide ramp 140. When the torsion spring 154 resets, it simultaneously drives the Y-shaped support frame 20 to reset to a vertical position. The electric push rod 144 drives the moving plate 151 to move towards the rewinding structure 200, thereby driving the rewinding drum 10 to move towards the rewinding structure 200, so that the rewinding structure 200 can clamp the rewinding drum 10. Example 2

[0039] Please see Figures 1-7 The rewinding structure 200 provided by this utility model includes a first rotating component 220 for clamping the rewinding cylinder 10, and there are two first rotating components 220. The rewinding structure 200 includes a control box 210. The control box 210 is equipped with a second motor 212 for controlling the rotation of the first rotating component 220. The first rotating component 220 is controlled to rotate by the second motor 212 so that the first rotating component 220 clamping the rewinding cylinder 10 can synchronously drive the rewinding cylinder 10 to rewind the plastic wrap.

[0040] A screw nut 211 is installed on one side of the control box 210 to cooperate with the reciprocating screw 130 to control the control box 210 to move up and down. The screw nut 211 is sleeved on the reciprocating screw 130. When the reciprocating screw 130 rotates, the screw nut 211 moves up and down on the reciprocating screw 130.

[0041] A lead screw nut 230 is installed on one side of the control box 210. A connecting rod 231 for controlling the first rotating component 220 to move back and forth is fixedly installed on the upper end of the lead screw nut 230. A reciprocating lead screw 232 is installed on one end of the lead screw nut 230. A motor 213 for controlling the rotation of the reciprocating lead screw 232 is installed inside the control box 210. When the rewinding drum 10 is replaced, the motor 213 is started, which synchronously drives the reciprocating lead screw 232 to rotate, causing the lead screw nut 230 to move toward the control box 210. The connecting rod 231 drives the two first rotating components 220 to move away from each other, releasing the clamping of the rewinding drum 10. The rewinding drum 10 falls on the guide inclined plate 112. The guide inclined plate 112 guides the rewinding drum 10 to move to the right. A collection box can be placed on the right side of the limit frame 110 to collect the rewound plastic wrap.

[0042] The rewinding structure 200 includes a limiting box 240. A lead screw nut 230 is synchronously installed at the lower end of the limiting box 240 to control the movement of the second rotating assembly 241. A U-shaped rod 214 for limiting the limiting box 240 is fixedly installed at the upper end of the control box 210. The U-shaped rod 214 ensures that the limiting box 240 moves up and down synchronously when the control box 210 moves up and down. A second rotating assembly 241 is movably installed at one end of the limiting box 240 to cooperate with the first rotating assembly 220 in limiting the rewinding cylinder 10. The second rotating assembly 241 is movably installed at the rear end of the limiting box 240 to allow it to rotate and rewind the cling film. The first rotating assembly 220 and the second rotating assembly 241 have the same structure, and one end of the second rotating assembly 241 is movably installed on the limiting box 240 via a rotating block.

[0043] The first rotating assembly 220 includes a limiting disk 221. A sleeve 222 is fixedly installed on the side of the limiting disk 221 facing the rewinding drum 10, and the central shaft of the rewinding drum 10 is inserted into the middle of the sleeve 222. A plurality of sharp protrusions 223 are fixedly installed on the side of the limiting disk 221 facing the rewinding drum 10. The sharp protrusions 223 facilitate the first rotating assembly 220 to synchronously drive the rewinding drum 10 to rotate when it rotates. A connecting rod 224 is fixedly installed on the other side of the limiting plate 221. A slider 225 is fixedly installed on one side of the connecting rod 224. A slider 226 is fixedly installed on the outer wall of the slider 225. The first rotating assembly 220 includes a connecting sleeve 227 for limiting the slider 225. The connecting sleeve 227 is installed on the output shaft of the motor 212 so that when the motor 212 starts, it drives the first rotating assembly 220 to rotate. The inner wall of the connecting sleeve 227 is provided with a groove 228 for limiting the slider 226. The slider 226 slides in the groove 228. A spring 229 for controlling the reset of the limiting plate 221 is installed inside the connecting sleeve 227. The spring 229 pushes the limiting plate 221 away from the connecting sleeve 227.

[0044] Spring 229 pushes the limiting plate 221 toward the rewinding drum 10, causing the first rotating component 220 to clamp the rewinding drum 10 in conjunction with the second rotating component 241. When the rewinding drum 10 is being wound up, motor 212 controls the connecting sleeve 227 to rotate. The connecting sleeve 227 synchronously drives the slider 225 to rotate. Under the transmission of connecting rod 224 and limiting plate 221, the rewinding drum 10 rotates synchronously to wind up the cling film. After winding, motor 213 starts and drives the reciprocating screw 232 to rotate, causing the screw nut 230 to drive connecting rod 231 toward the limiting plate 221. Finally, connecting rod 231 pushes the limiting plate 221 toward the connecting sleeve 227, thereby releasing the clamping of the rewinding drum 10. The rewinding drum 10 can then fall onto the guide inclined plate 112 and fall into the collection box through the guide inclined plate 112.

[0045] When replacing the rewinding drum 10, motor 131 controls the reciprocating screw 130 to rotate. The reciprocating screw 130, in conjunction with the screw nut 211, drives the control box 210 to move upward. Under the action of the U-shaped rod 214, the limit box 240 moves upward synchronously. When the control box 210 moves to the preset position, the electric push rod 144 controls the moving component 150 to drive the rewinding drum 10 to move towards the middle of the sleeve 222. Finally, motor 3213 controls the reciprocating screw 232 to move in the opposite direction, so that the screw nut 230 drives the connecting rod 231 away from the limit plate 221. The spring 229 controls the slider 225 to reset. Finally, the sleeve 222 is fitted onto the middle shaft of the rewinding drum 10 to clamp the rewinding drum 10. Finally, the reciprocating screw 130, in conjunction with the screw nut 211, controls the rewinding structure 200 to move downward to rewind the plastic wrap.

[0046] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. A fresh-keeping film rewinding device, comprising a rewinding structure (200) for controlling the rewinding of a fresh-keeping film by a rewinding drum (10), characterized in that: a rewinding table (100) for limiting the rewinding structure (200) is installed at the lower end of the rewinding structure (200); the rewinding table (100) comprises a limiting frame (110), a guide inclined plate II (140) and a moving assembly (150) for facilitating the replacement of the rewinding drum (10) are installed at the right end of the limiting frame (110), and the rewinding table (100) comprises a reciprocating lead screw (130) for guiding the rewinding structure (200); the rewinding structure (200) comprises a first rotating assembly (220) for clamping the rewinding drum (10), and the rewinding structure (200) comprises a control box (210), and a motor II (212) for controlling the rotation of the first rotating assembly (220) is installed inside the control box (210).

2. The film rewinding device according to claim 1, characterized in that: a plurality of guide rollers (111) for guiding the fresh-keeping film are installed at the middle part of the limiting frame (110), a guide inclined plate I (112) for guiding the rewound fresh-keeping film is installed at the right side of the limiting frame (110), a cutting knife (113) for cutting the fresh-keeping film is installed at the right end of the limiting frame (110), limiting frames (120) are installed at both sides of the limiting frame (110), and a motor I (131) for controlling the rotation of the reciprocating lead screw (130) is installed at the lower end of the reciprocating lead screw (130).

3. The film rewinding device according to claim 1, characterized in that: limiting plates I (141) for limiting the rewinding drum (10) are installed at the front and rear ends of the guide inclined plate II (140), a limiting inclined block I (142) is installed at the left side of the limiting plate I (141), and a limiting inclined block II (143) is installed at the left side of the guide inclined plate II (140).

4. The film rewinding device according to claim 3, characterized in that: the moving assembly (150) comprises a moving plate (151), connecting rods I (152) are installed at the front and rear ends of the moving plate (151), fixed blocks (153) are installed at the middle parts of the connecting rods I (152), Y-shaped support frames (20) for moving the rewinding drum (10) are sleeved at one end of the connecting rods I (152), guide discs (30) for limiting the Y-shaped support frames (20) are installed at one end of the connecting rods I (152), torsional springs (154) for controlling the resetting of the Y-shaped support frames (20) are sleeved at one end of the connecting rods I (152), and limiting rods (155) are installed at one side of the moving assembly (150).

5. The film rewinding device according to claim 4, characterized in that: a limiting plate II (145) for limiting the limiting rods (155) is installed at the left middle part of the guide inclined plate II (140), and an electric push rod (144) for controlling the movement of the moving plate (151) is installed at one side of the limiting plate II (145).

6. The film rewinding device according to claim 4, characterized in that: One end of the Y-shaped support frame (20) is processed with a clamping groove (21) for placing the rewinding drum (10), one side of the Y-shaped support frame (20) is installed with a positioning sliding block (22), and one side of the Y-shaped support frame (20) is installed with a connecting block (23) in contact with the limiting inclined block two (143).

7. The film rewinding device according to claim 6, characterized in that: The guiding disc (30) is provided with an arc-shaped groove (31) for limiting the positioning sliding block (22) on one side of the Y-shaped support frame (20), the guiding disc (30) is installed with a key block (32) on one side of the connecting rod one (152), and the middle of the guiding disc (30) is installed with a bolt (33) for fixing the guiding disc (30).

8. The film rewinding device according to claim 1, wherein: One side of the control box (210) is installed with a lead screw nut (211) for cooperating with the reciprocating lead screw (130) to control the up-down movement of the control box (210), one side of the control box (210) is installed with a lead screw nut (230), the upper end of the lead screw nut (230) is installed with a connecting rod two (231) for controlling the movement of the first rotating assembly (220), one end of the lead screw nut (230) is installed with a reciprocating lead screw (232), the inside of the control box (210) is installed with a motor three (213) for controlling the rotation of the reciprocating lead screw (232), and the rewinding structure (200) comprises a limiting box (240), the upper end of the control box (210) is installed with a U-shaped rod (214) for limiting the limiting box (240), and one end of the limiting box (240) is installed with a second rotating assembly (241) for cooperating with the first rotating assembly (220) to limit the rewinding drum (10).

9. The film rewinding device according to claim 1, wherein: The first rotating assembly (220) comprises a limiting disc (221), the limiting disc (221) is installed with a sleeve (222) on one side of the rewinding drum (10), the limiting disc (221) is installed with a sharp protrusion (223) on one side of the rewinding drum (10), the other side of the limiting disc (221) is installed with a connecting rod three (224), one side of the connecting rod three (224) is installed with a sliding block one (225), the outer wall of the sliding block one (225) is installed with a sliding block two (226), the first rotating assembly (220) comprises a connecting sleeve (227) for limiting the sliding block one (225), and the connecting sleeve (227) is installed on the output shaft of the motor two (212), the inner wall of the connecting sleeve (227) is provided with a sliding groove (228) for limiting the sliding block two (226), and the inside of the connecting sleeve (227) is installed with a spring (229) for controlling the reset of the limiting disc (221).

Images