An automatic film winding device

Abstract

An automatic film winding device comprises a rack, a winding assembly and a feeding mechanism. The rack is provided with a positioning part. The winding assembly comprises a C-shaped rotating disc and a driving unit. The rotating disc is provided with a pulling end. The feeding mechanism comprises a mounting seat, a pushing assembly, a poking assembly, a clamping assembly, a driving part and a cutting assembly. The mounting seat is provided with a material guiding groove. The material guiding groove is provided with an inlet and an outlet at two ends of the mounting seat. The cutting assembly is arranged at the outlet of the material guiding groove. The pushing assembly and the clamping assembly are arranged at two sides of the mounting seat respectively. An upper feeding station is arranged below the pulling end in the length direction of the mounting seat. When the clamping assembly is arranged at a position spaced apart from the pushing assembly, the poking assembly is used to drive the film material between the outlet and the clamping assembly to move away from the clamping assembly in the width direction of the mounting seat. The stability and efficiency of the film winding are improved.

Description

Technical Field

[0001] This invention relates to the field of film wrapping technology, and more specifically to an automatic film wrapping device. Background Technology

[0002] Wrapping machines are commonly used in cable packaging. To wrap the edges of cables, the cables are usually wound into a ring, and then a film is wrapped around the outside of the cable ring using a wrapping machine to fix the cable and also to prevent dust and moisture. Therefore, using a wrapping machine to wrap the outside of cables is a necessary procedure before the cables are stored and transported.

[0003] Because the cable is looped, the packaging film must be passed through the loop hole when packaging it. Therefore, existing automatic wrapping devices usually use a C-shaped turntable to drive the packaging film to wrap around the outside of the cable. For example, a ring-shaped automatic wrapping machine disclosed in patent document CN104443483 uses a ring gear turntable with an opening to pull the film material to move and then wrap the film material around the cable. In this patent document, a clamping mechanism is used to feed the film material between the opening of the ring gear turntable and the ring product. The clamping mechanism has a complex structure. During the film wrapping process, the clamping mechanism needs to move multiple times to avoid the ring gear turntable, resulting in low packaging efficiency. Moreover, because there is a certain offset between the clamping mechanism and the opening of the ring gear turntable, it is difficult for the ring gear turntable to align with the middle of the film material in the width direction when rotating, which can easily cause the film material to deviate or even slip and fail when wrapped around the cable. Manual correction is required before the film material can continue to be wrapped. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide an automatic wrapping device that can improve the efficiency and stability of wrapping packaging film on the outside of ring-shaped products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic film wrapping device includes a frame, a wrapping assembly, and a feeding mechanism;

[0007] The frame is equipped with a positioning part for placing ring-shaped products;

[0008] The winding assembly includes a C-shaped rotating disk and a drive unit for rotating the rotating disk. One end of the rotating disk at the upper part of its C-shaped opening forms a pulling end, which is located above the positioning part.

[0009] The feeding mechanism includes a mounting base fixed on the frame, a pushing assembly, a tossing assembly, a clamping assembly, a driving component, and a cutting assembly. The mounting base has a guide groove with an inlet and an outlet at opposite ends along its length. The cutting assembly is located at the outlet of the guide groove. The pushing assembly and clamping assembly are located on opposite sides of the mounting base. The pushing assembly pushes the film material in the guide groove to the clamping assembly, causing it to clamp the film. The driving component moves the clamping assembly along the length of the mounting base, either so that the clamping assembly and the pushing assembly are at the same position along the length of the mounting base, or so that the clamping assembly moves away from the inlet, creating a distance between them. A feeding station is formed between the tossing assembly and the outlet along the length of the mounting base, directly below the pulling end. When the clamping assembly is at a distance from the pushing assembly, the tossing assembly moves the film material between the outlet and the clamping assembly along the width of the mounting base away from the clamping assembly.

[0010] The clamping assembly includes a slider and a movable block mounted on the slider. The slider can slide along the length direction of the mounting base. The movable block is slidably mounted on the slider and can move relative to the slider along the length direction of the mounting base. A groove is formed between the slider and the movable block. When the clamping assembly and the pushing assembly are located at the same position along the length direction of the mounting base, the opening of the groove is located on one side of the guide groove. The pushing assembly includes a push block and a first cylinder. The first cylinder is used to drive the push block to move along the width direction of the guide groove between a position located on the other side of the guide groove and a position located in the groove.

[0011] The slider is provided with a through groove extending from its upper surface to its lower surface. A notch is formed on the side of the through groove near the material guide groove. The end wall of the through groove away from the inlet of the material guide groove forms a first clamping surface. The movable block is provided with a protrusion embedded in the through groove. The surface of the protrusion opposite to the first clamping surface forms a second clamping surface. The slot is formed by the second clamping surface and the first clamping surface and is directly opposite the notch.

[0012] The slider is also provided with a guide groove whose extension direction is consistent with the length direction of the mounting base, and the movable block is provided with a guide block that slides and is embedded in the guide groove.

[0013] The first clamping surface and / or the second clamping surface are provided with protruding teeth.

[0014] A guide seat is fixed on one side of the mounting base. A slide groove is provided on the guide seat, and the slide block is slidably installed in the slide groove. The driving component is a second cylinder whose cylinder body is connected to the guide seat. The telescopic rod of the second cylinder is connected to the movable block.

[0015] The actuation assembly includes a lever mounted on a guide seat and a third cylinder for moving the lever along the width of the mounting seat.

[0016] The cutting assembly includes a cutting blade mounted on a mounting base and located at the outlet, and a fourth cylinder for driving the cutting blade up and down.

[0017] The frame is equipped with a feed roller for mounting the film roll and several guide rollers for guiding the film and passing it through the inlet of the guide groove.

[0018] The frame is equipped with multiple rotating shafts that extend along the height direction and are pivotally connected to the frame, as well as a drive mechanism for driving the rotating shafts to rotate. The multiple rotating shafts are arranged in a circumferential array and together form a positioning part. The frame is also equipped with an adjustment component for adjusting the position of the rotating shafts on the frame.

[0019] The beneficial effects of this invention are as follows:

[0020] Compared to existing technologies, this invention employs a feeding mechanism to transport the packaging film, a clamping mechanism to clamp the film, and a pulling component to laterally move the film after it has been pulled. This allows the film to be positioned at the loading station while taut, directly below the pulling end. As the rotating disc rotates, the pulling end precisely pulls the film at the loading station. The film, positioned between the clamping and pulling components, is pulled into a contracted and tilted state, increasing the adhesion between the film and the surface of the ring-shaped product. This prevents the film from shifting or slipping while wrapped around the cable, improving the stability of the wrapping process. Simultaneously, the feeding mechanism does not need to make multiple movements to avoid the rotating disc, thus improving the efficiency of the wrapping process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram showing the cooperation between the feeding mechanism and the winding assembly of the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the central feeding mechanism;

[0024] Figure 4 for Figure 3 A schematic diagram of the middle clamping assembly;

[0025] Figure 5 for Figure 3 Installation diagram of the clamping assembly;

[0026] Figure 6-10 This is a schematic diagram of the working state of the present invention. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings and specific embodiments:

[0028] like Figure 1 , 2 As shown in Figures 3, 4, and 5, an automatic wrapping device of the present invention is used to wrap packaging film around the outside of annular products. This embodiment will take cable packaging as an example for detailed description. The automatic wrapping device includes a frame 10, a wrapping assembly, and a feeding mechanism 30. The frame 10 is the mounting base of the entire device, and a positioning part 101 is provided on it. The positioning part 101 is used to place the annular cable and support and position the cable. The wrapping assembly includes a rotating disk 20 and a drive unit for driving the rotating disk to rotate. The drive unit is used to drive the rotating disk 20 to rotate. The rotating disk 20 is C-shaped, and one end of the upper part of its C-shaped opening forms a pull end 21. The pull end 21 is above the positioning part 101. It should be noted that the relative position of the rotating disk 20 and the positioning part 101 should be set so that when the rotating disk 20 rotates, the pull end 21 can pass through the hole in the middle of the cable without the rotating disk 20 interfering with the cable. This is the same as the prior art, and will not be described in detail here.

[0029] The feeding mechanism 30 of the present invention includes a mounting base 31, a pushing assembly, a tossing assembly, a clamping assembly, a driving component, and a cutting assembly. The mounting base 31 is fixed on the frame 10 and located below the positioning part 101. A guide groove 311 is provided on the mounting base 31. The extension direction of the guide groove 311 is consistent with the length direction of the mounting base 31 (i.e., the X direction in the figure). The guide groove 311 extends from the front end of the mounting base 31 to the rear end of the mounting base 31. An inlet 312 is formed at the front end of the mounting base 31 and an outlet 313 is formed at the rear end of the mounting base 31. For ease of processing, a groove can be machined on the upper surface of the mounting base 31 by machining. The two ends of the groove extend to the front and rear ends of the mounting base 31, respectively. A cover plate 310 is fixed on the mounting base 31 to seal the upper opening of the groove. The guide groove 311 is formed by the cover plate 310 and the inner wall of the groove. The packaging film can be inserted into the guide groove 311 through the inlet 312 and exited through the outlet 313. A cutting assembly is installed at the outlet 313 of the guide trough 311. The cutting assembly can be used to cut the packaging film at the outlet 313 of the guide trough 311. A pushing assembly and a clamping assembly are located on both sides of the mounting base. The pushing assembly is used to push the packaging film in the guide trough 311 to the clamping assembly. That is, the packaging film, which was originally in an unfolded state in the guide trough 311, is pushed by the pushing assembly and then placed in a contracted state at the clamping assembly. The clamping assembly clamps the contracted packaging film. The driving member is used to drive the clamping assembly to move along the X direction between a first position and a second position. When the clamping assembly is in the first position, the clamping assembly and the pushing assembly are located at the same position in the length direction of the mounting base 31, that is, the clamping assembly and the pushing assembly are arranged opposite each other on both sides of the mounting base 31. When the driving member drives the clamping assembly to move to the second position, the clamping assembly moves a certain distance away from the inlet 312 along the length direction of the mounting base 31, thereby making the clamping assembly and the pushing assembly a certain distance apart in the length direction of the mounting base 31.

[0030] In a specific embodiment, the clamping assembly includes a slider 331 and a movable block 332. The slider 331 can slide along the length direction of the mounting base 31. The movable block 332 is mounted on the slider 331 and can move relative to the slider 331 along the length direction of the mounting base 31. A groove is formed between the slider 331 and the movable block 332. When the movable block 332 moves relative to the slider 331 in the X direction, the width of the groove increases or decreases. When the groove width decreases, the groove can be used to clamp the shrinkage packaging film. When the clamping assembly and the pushing assembly are located at the same position along the length direction of the mounting base 31, the opening of the groove is located at one of the guide grooves 311. The push assembly includes a push block 321 and a first cylinder 322. The cylinder body of the first cylinder 322 is fixedly connected to the mounting base 31, and its telescopic rod extends along the width direction of the mounting base 31 (i.e., the Y direction in the figure). The push block 321 is mounted on the telescopic rod of the first cylinder 322. The first cylinder 322 can drive the push block 321 to reciprocate along the Y direction, that is, the push block 321 can move from the other side of the guide groove 311 across the guide groove 311 to one side of the guide groove 311. When clamping the packaging film, the clamping assembly is located in the first position, and the push block 321 pushes the packaging film in the guide groove 311, causing the packaging film to retract towards the opening near the slot until the push block 321 pushes the packaging film in the guide groove 311. Block 321 moves into the slot, and the shrunken packaging film is squeezed into the slot. Then, movable block 332 moves relative to slider 331, causing the width of the slot to change to its minimum state. At this time, movable block 332 and slider 331 clamp the shrunken packaging film. Specifically, a through groove 3312 extending from its upper surface to its lower surface is provided on slider 331. A notch 3313 is formed on the side of through groove 3312 near the guide groove 311. The end wall of through groove 3312 away from the inlet 312 of guide groove 311 (i.e., the rear end wall of through groove 3312) forms a first clamping surface 3314. Movable block 332 is provided with a clamping surface embedded in through groove. The protrusion 3322 in 3312 has a rear end wall that forms a second clamping surface 3323 that is directly opposite to the first clamping surface 3314. The first clamping surface 3314 and the second clamping surface 3323 form the aforementioned slot, and the notch 3313 is directly opposite to the slot. Thus, the notch 3313 forms the opening of the slot to connect the slot with the guide groove 311. After the pusher 321 pushes the packaging film from the notch 3313 to between the first clamping surface 3314 and the second clamping surface 3323, the second cylinder 322 drives the pusher 321 to reset, and the second clamping surface 3323 moves toward the first clamping surface 3314 to clamp the shrinking packaging film.After the clamping assembly clamps the shrinkage packaging film, the driving component moves the clamping assembly from the first position to the second position. During this process, the packaging film is pulled by the driving component along the length of the mounting base 31. To enable the clamping assembly to have a relatively large stroke to pull a sufficiently long packaging film, a guide seat 37 can be fixed on one side of the mounting base 31. The guide seat 37 extends backward a certain distance in the X direction, and a slide groove 371 extending in the X direction is provided on the guide seat 37. The slider 331 is slidably installed in the slide groove 371. The driving component is a second cylinder 34. The cylinder body of cylinder 34 is fixed to the rear end of guide seat 37, and the telescopic rod extends along the X direction. The telescopic rod of the second cylinder 34 is connected to the movable block 332. The second cylinder 34 can drive the movable block 332 to move backward along the X direction, so that the second clamping surface 3323 on the movable block 332 moves closer to the first clamping surface 3314 to clamp the shrinkage packaging film. After the second clamping surface 3323 moves closer to the first clamping surface 3314 to clamp the packaging film, the telescopic rod of the second cylinder 34 continues to move backward, which in turn drives the movable block 332 and the slider 331 to move backward simultaneously to pull the clamped packaging film. After the slider 331 and the movable block 332 clamp the packaging film, they are driven by the drive component to move along the X direction away from the inlet 312, thereby driving the clamping assembly to pull the film material along the X direction. The actuating assembly is located behind the outlet 313 and in the X-direction. A certain distance separates the actuating assembly from the outlet 313, forming a loading station between them. This loading station is located directly below the pulling end 21 of the rotating disk 20. The actuating assembly includes a lever 361 and a third cylinder 362. The cylinder body of the third cylinder 362 is fixed to the guide seat 37, and its telescopic rod extends in the Y-direction. The lever 361 is mounted on the telescopic rod of the third cylinder 362. Thus, the third cylinder 362 can drive the lever 361 to move in the Y-direction. The lever 361 on the actuating assembly is offset from the outlet 313 by a certain distance in the X-direction. When the clamping assembly moves to the second position, the packaging film passing through the outlet 313 is pulled tight by the clamping assembly. However, at this time, the packaging film is in a contracted state and deviates from the direction of extension of the guide groove 311. At this time, the third cylinder 362 is activated to drive the lever 361 to move along the Y direction. The lever 361 can then move the packaging film located between the clamping assembly and the outlet 313 along the Y direction, causing the packaging film to move away from the clamping assembly along the Y direction. In this way, the packaging film located between the lever and the outlet 313 is pushed and placed in the direction of extension of the guide groove 311. This part of the packaging film is located at the feeding station, that is, directly below the pulling end 21.

[0031] A guide groove 3311 is also provided on the slider 331. The extension direction of the guide groove 3311 is consistent with the length direction of the mounting base 31. A guide block 3321 is provided on the movable block 332. The guide block 3321 is slidably embedded in the guide groove 3311. The guide groove 3311 and the guide block 3321 guide the movable block 332 to prevent the movable block 332 from deflecting, thereby ensuring that the movable block 332 and the slider 331 can clamp the packaging film. In order to enable the movable block 332 and the slider 331 to further clamp the packaging film and prevent the packaging film from detaching from the clamping component when the packaging film is pulled, a tooth is provided on the first clamping surface 3314. Of course, the tooth can also be provided on the second clamping surface 3323, or the tooth can be provided on both the first clamping surface 3314 and the second clamping surface 3323.

[0032] In other embodiments, the telescopic rod of the second cylinder 34 can be connected to the slider 331. A spring can be provided between the slider 331 and the movable block 332. The elastic stress of the spring keeps the second clamping surface 3323 on the movable block 332 and the first clamping surface 3314 on the slider 331 in a clamped state. When clamping the packaging film, the push block 332 moves towards the clamping assembly. The push block 332 pushes the first clamping surface 3314 and the second clamping surface 3323 apart, and sends the packaging film between the first clamping surface 3314 and the second clamping surface 3323. After the push block 332 resets, the spring rebounds, causing the first clamping surface 3314 and the second clamping surface 3323 to come together again to clamp the shrinkage packaging film.

[0033] The cutting assembly includes a cutting blade 351 and a fourth cylinder 352. The cutting blade 351 is mounted on the mounting base 31 and located at the outlet 313. The cylinder body of the fourth cylinder 352 is fixed on the mounting base 31, and its telescopic rod extends upward. The cutting blade 351 is fixed on the telescopic rod of the fourth cylinder 352. The fourth cylinder 352 can drive the cutting blade 351 to move up and down. When the cutting blade 351 moves downward, the packaging film located at the outlet 313 can be cut.

[0034] In this invention, a film roll feeding roller 61 and several guide rollers 62 are provided on the frame 10. The packaging film roll is placed on the feeding roller 61. After being guided and tensioned by the multiple guide rollers 62, the packaging film passes through the inlet 312 and enters the guide groove 311. For ease of installation, a vertical plate 60 is fixed on the frame 10. The feeding roller 61 and several guide rollers 62 are all installed on the vertical plate 60. The feeding mechanism 30 is located on the top side of the vertical plate 60.

[0035] Multiple rotating shafts 40 are mounted on the frame 10, extending along the height direction and pivotally connected to the frame 10. The multiple rotating shafts 40 are arranged in a circumferential array. Furthermore, a drive unit 41 for rotating the rotating shafts 40 is installed on the frame 10. The multiple rotating shafts 40 form a positioning part 101. When wrapping the cable with packaging film, the annular cable is placed in the positioning part 101, with the outer periphery of the cable contacting the multiple rotating shafts 40. When the drive unit 41 rotates the rotating shafts 41, the friction between the rotating shafts 40 and the cable is utilized. The rotating shaft 40 is driven to rotate. To increase the friction between the rotating shaft 40 and the cable, vertically extending textures can be made on the surface of the rotating shaft 40. In addition, in order to adapt to cable packaging of different sizes, the rotating shaft 40 can be mounted on a movable bracket. The movable bracket can be movably mounted on the frame 10. The movable bracket is moved by the adjusting component 50 to adjust the position of the rotating shaft 40 on the frame 10, thereby changing the size of the positioning part 101. The adjusting component can be a screw drive mechanism driven by a handwheel.

[0036] See Figure 6-10 When the automatic wrapping device of the present invention is working, the packaging film roll is mounted onto the feed roller, such as... Figure 6 As shown, the packaging film 70 is inserted into the guide groove 311 through the inlet 312, and the cable is placed in the positioning part 101. The packaging film 70 is in an unfolded state in the guide groove 311; as Figure 7 As shown, after the first cylinder 322 is activated, pushing the pusher block 321 to squeeze the packaging film 70 into the slot, the first cylinder 322 drives the pusher block 321 to reset; as Figure 8 As shown, the second cylinder 34 is activated, pulling the movable block 332 backward. The second clamping surface 3323 on the movable block 332 moves towards the first clamping surface 3314 on the slider 331 and clamps the shrunken packaging film. As the second cylinder 34 continues to pull the movable block 332 backward, the slider 331 moves backward along with the movable block 332, pulling the packaging film backward to... Figure 9 As shown, the portion of the packaging film at loading station A is offset from the guide chute 311; see [link / reference]. Figure 10 The third cylinder 362 is activated, which drives the lever 361 to move the packaging film so that the portion of the packaging film at the loading station A is directly opposite the guide groove 311 and directly below the pulling end 21. The rotating disk 20 rotates, and the pulling end 21 pulls the packaging film at the loading station A downward. At the same time, the second cylinder 34 pushes the movable block 332 backward, causing the clamping component to release the packaging film. The pulling end 21 drives the packaging film to move around the cable and wrap it around the cable. At the same time, multiple rotating shafts 40 rotate, causing the cable to rotate. After the cable rotates one revolution, the packaging film is completely wrapped around the outside of the cable. The fourth cylinder 352 drives the cutting knife 351 to move downward and cut the packaging film, preparing to wrap the packaging film around the next cable.

[0037] In the above Figure 10 In the indicated state, the packaging film 70 is transported to its position after being pulled and moved, so that the first section 71 of the packaging film 70 at the loading station A is in a semi-open state and faces the pulling end 21. The packaging film 70 and the pulling end 21 have a large contact surface, and the pulling end 21 is not easy to detach from the packaging film 70 when it can pull the packaging film 70 downward. At the same time, the second section 72 of the packaging film 70, located between the lever 361 and the clamping assembly, is in a retracted state and is tilted, forming a large clamp with the main body of the packaging film 70. When the packaging film 70 is wrapped around the outside of the cable, the shrinking second section 72 is pressed between the unfolded packaging film 70 and the cable surface, and is placed at an angle on the cable surface. When the unfolded packaging film 70 is pressed on the shrinking second section 72, the shrinking second section 72 increases the friction between the packaging film 70 and the cable surface, thereby increasing the adhesion between the packaging film 70 and the cable surface during wrapping, similar to the end of the packaging film 70 being knotted on the cable surface, thus preventing the packaging film 70 from slipping on the cable surface during wrapping.

[0038] Compared to existing technologies, this invention employs a feeding mechanism to transport the packaging film, a clamping mechanism to clamp the film, and a pulling component to laterally move the film after it has been pulled. This allows the film to be positioned at the loading station while taut, directly below the pulling end. As the rotating disc rotates, the pulling end precisely pulls the film at the loading station. The film, positioned between the clamping and pulling components, is pulled into a contracted and tilted state, increasing the adhesion between the film and the surface of the ring-shaped product. This prevents the film from shifting or slipping while wrapped around the cable, improving the stability of the wrapping process. Simultaneously, the feeding mechanism does not need to make multiple movements to avoid the rotating disc, thus improving the efficiency of the wrapping process.

[0039] The above description is merely a preferred embodiment of the present invention and is a further detailed description of the present invention in conjunction with specific preferred embodiments. It should not be construed that the specific implementation of the present invention is limited to these descriptions. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic film wrapping device, characterized in that, Includes frame, winding assembly, and feeding mechanism; The frame is equipped with a positioning part for placing ring-shaped products; The winding assembly includes a C-shaped rotating disk and a drive unit for rotating the rotating disk. One end of the rotating disk at the upper part of its C-shaped opening forms a pulling end, which is located above the positioning part. The feeding mechanism includes a mounting base fixed on the frame, a pushing assembly, a tossing assembly, a clamping assembly, a driving component, and a cutting assembly. The mounting base has a guide groove with an inlet and an outlet at opposite ends along its length. The cutting assembly is positioned at the outlet of the guide groove. The pushing assembly and clamping assembly are located on opposite sides of the mounting base. The pushing assembly pushes the film material in the guide groove to the clamping assembly, causing it to clamp the film. The driving component moves the clamping assembly along the length of the mounting base, either to position the clamping assembly and the pushing assembly at the same location along the length of the mounting base, or to move the clamping assembly away from the inlet, creating a distance between them. A feeding station is formed at the position between the tossing assembly and the outlet along the length of the mounting base, directly below the pulling end. When the clamping assembly is in position... At a certain distance from the push assembly, the actuating assembly is used to move the membrane material located between the outlet and the clamping assembly along the width direction of the mounting base away from the clamping assembly; the clamping assembly includes a slider and a movable block mounted on the slider. The slider can slide along the length direction of the mounting base, and the movable block is slidably mounted on the slider and can move relative to the slider along the length direction of the mounting base. A slot is formed between the slider and the movable block. When the clamping assembly and the push assembly are located at the same position along the length direction of the mounting base, the opening of the slot is located on one side of the guide groove; the push assembly includes a push block and a first cylinder, which is used to drive the push block to move along the width direction of the guide groove between a position located on the other side of the guide groove and a position located in the slot; the cutting assembly includes a cutting blade mounted on the mounting base and located at the outlet, and a fourth cylinder for driving the cutting blade to move up and down.

2. The automatic film wrapping device as described in claim 1, characterized in that, The slider is provided with a through groove extending from its upper surface to its lower surface. A notch is formed on the side of the through groove near the material guide groove. The end wall of the through groove away from the inlet of the material guide groove forms a first clamping surface. The movable block is provided with a protrusion embedded in the through groove. The surface of the protrusion opposite to the first clamping surface forms a second clamping surface. The slot is formed by the second clamping surface and the first clamping surface and is directly opposite the notch.

3. The automatic film wrapping device as described in claim 2, characterized in that, The slider is also provided with a guide groove whose extension direction is consistent with the length direction of the mounting base, and the movable block is provided with a guide block that slides and is embedded in the guide groove.

4. The automatic film wrapping device as described in claim 2, characterized in that, The first clamping surface and / or the second clamping surface are provided with protruding teeth.

5. The automatic film wrapping device as described in claim 2, characterized in that, A guide seat is fixed on one side of the mounting base. A slide groove is provided on the guide seat, and the slide block is slidably installed in the slide groove. The driving component is a second cylinder whose cylinder body is connected to the guide seat. The telescopic rod of the second cylinder is connected to the movable block.

6. The automatic film wrapping device as described in claim 5, characterized in that, The actuation assembly includes a lever mounted on a guide seat and a third cylinder for moving the lever along the width of the mounting seat.

7. The automatic film wrapping device as described in claim 1, characterized in that, The frame is equipped with a feed roller for mounting the film roll and several guide rollers for guiding the film and passing it through the inlet of the guide groove.

8. The automatic film wrapping device as described in claim 1, characterized in that, The frame is equipped with multiple rotating shafts that extend along the height direction and are pivotally connected to the frame, as well as a drive mechanism for driving the rotating shafts to rotate. The multiple rotating shafts are arranged in a circumferential array and together form a positioning part. The frame is also equipped with an adjustment component for adjusting the position of the rotating shafts on the frame.

Images