Packaging bag film covering and feeding mechanism

Abstract

The invention provides a packaging bag film covering and feeding mechanism, and relates to the technical field of packaging bag production devices.The packaging bag film covering and feeding mechanism comprises a rack, a material roll is rotationally arranged at one end of the rack, and a first motor for driving the material roll is arranged on one side of the rack; a material guiding mechanism, a cutting mechanism and a jacking mechanism are sequentially arranged on the top of the rack in the conveying direction, and a feeding mechanism is arranged on the side face of the rack. The material guide mechanism comprises a guide roller set, a buffer roller set and a power roller set, the guide roller set and the power roller set are arranged at the top of the rack, and the buffer roller set is rotationally arranged in the rack and driven by a first air cylinder; the cutting mechanism comprises a lower cut-off tool fixed to the rack and an upper cut-off tool arranged in a sliding mode, and the upper cut-off tool is driven by a second air cylinder to be combined with the lower cut-off tool in a shearing mode. The jacking mechanism comprises a liftable trough and is driven by a third cylinder; the feeding mechanism comprises a movable suction cup support, a suction cup is arranged at the bottom of the suction cup support, and the feeding mechanism is driven by a driving source to move to the position above the trough to take materials. The problems that the feeding film length of existing equipment is difficult to adjust, the compatibility is poor, and the production changing efficiency is low are solved.

Description

Technical Field

[0001] This invention relates to the field of packaging bag production equipment technology, and in particular to a packaging bag film-coating and feeding mechanism. Background Technology

[0002] In the production of packaging bags, to enhance the load-bearing strength of the bag opening or bottom, an additional layer of plastic film is usually laminated to these critical areas. This film is called a reinforcing film. The reinforcing film is usually installed in roll form on the feeding mechanism, and after being guided, conveyed, and cut, it is bonded to the packaging bag body.

[0003] Existing laminating and feeding devices typically include a base, a roll mounting section, a guide roller assembly, a cutter section, and a feeding table. During operation, the film is drawn from the roll, tensioned by the guide roller assembly, and conveyed to the cutting station. The cutter cuts the reinforcing film into sheets according to a set length. The cut sheets fall onto or are pushed by a mechanical structure to the feeding table, where a conveyor belt or pusher conveys them to the hot pressing station for lamination with the packaging bag. However, in practical applications, these feeding devices are only suitable for horizontal continuous production. To ensure the feeding length of the reinforcing film matches the width of the packaging bag, the operating frequency of the cutter section is usually rigidly locked to the feeding step length of the main traction roller. This makes it difficult to quickly adjust the feeding film length according to product specifications. If it is necessary to switch to different packaging bag lengths or to use different lengths of reinforcing film on the same bag width, the machine must be stopped to replace the cutter mold, change the transmission structure, or modify the parameters. This results in poor equipment compatibility, low changeover efficiency, and an inability to meet the urgent needs of the modern packaging industry for flexible production and rapid changeover. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a packaging bag film feeding mechanism, which solves the problem that the length of the feeding film is difficult to adjust quickly according to changes in product specifications, resulting in poor equipment compatibility and low production changeover efficiency.

[0005] According to an embodiment of the present invention, a packaging bag film-coating and feeding mechanism includes a frame, a material roll is rotatably disposed at the conveying start end of the frame, a first motor capable of driving the material roll to rotate is fixedly disposed on one side of the frame, a guiding mechanism, a cutting mechanism and a lifting mechanism are sequentially disposed on the top of the frame along the film conveying direction, and a feeding mechanism is disposed on the side of the frame.

[0006] The material guiding mechanism includes a guide roller group, a buffer roller group, and a power roller group. The guide roller group and the power roller group are fixedly installed on the top of the frame, and the buffer roller group is rotatably installed inside the frame. A first cylinder capable of driving the buffer roller group to rotate is also installed inside the frame.

[0007] The cutting mechanism includes an upper cutting blade and a lower cutting blade. The lower cutting blade is fixedly connected to the top of the frame, and the upper cutting blade is slidably connected to the top of the frame. The upper cutting blade can slide to cut with the lower cutting blade. A second cylinder that can drive the upper cutting blade to slide is provided on the frame.

[0008] The lifting mechanism includes a material trough that can be lifted and lowered on the top of the frame, and a third cylinder that can drive the material trough to move is provided on the frame.

[0009] The feeding mechanism includes a suction cup bracket that can move along the film material conveying direction. The suction cup bracket can be moved to directly above the material trough. At least one suction cup is provided at the bottom of the suction cup bracket. A drive source that can drive the suction cup bracket to move is provided on the frame.

[0010] The technical principle of this invention is as follows: In use, the first motor drives the material roll to rotate and release the film material. The film material is wound between the guide roller group and the buffer roller group in sequence. The conveying tension of the film material can be adjusted by rotating the buffer roller group at a certain angle. Then, the film material is continuously conveyed backward under the traction of the power roller group. The second cylinder drives the upper and lower cutting blades to cut the film material into a set length. The cut film material continues to be conveyed forward and falls into the material trough. At this time, the third cylinder drives the material trough to rise upward, and the suction cup bracket moves along the conveying direction to directly above the material trough. The suction cup picks up the film material. After the material trough is reset, the suction cup bracket carries the film material and continues to move to the hot-pressing lamination station of the packaging bag to complete the loading.

[0011] Furthermore, a drive gear is fixedly provided at the output end of the first motor, and a driven gear that can mesh with the drive gear is fixedly provided on one side of the material roll.

[0012] Furthermore, the buffer roller assembly includes a buffer bracket rotatably mounted on the frame and a buffer roller rotatably mounted within the buffer bracket. The cylinder body of the first cylinder is hinged to the frame, and the piston rod of the first cylinder is hinged to the buffer bracket.

[0013] Furthermore, the guide roller assembly includes several guide rollers that are horizontally rotatably disposed on the top of the frame, and the film material is alternately wound between the guide rollers and the buffer rollers along the conveying direction.

[0014] Furthermore, the power roller assembly includes a power roller rotatably mounted on the frame and a pressing roller positioned opposite the power roller above it. A gap is formed between the pressing roller and the power roller for the film material to pass through. A second motor is fixedly mounted on the frame, and the output end of the second motor is coaxially and fixedly connected to the power roller.

[0015] Furthermore, the cutting mechanism also includes a sliding frame slidably mounted on the frame, the upper cutting blade being fixedly mounted inside the sliding frame, a guide rail on the frame for the sliding frame to be embedded and slid, and the piston rod of the second cylinder being fixedly connected to the sliding frame.

[0016] Furthermore, the piston rod of the third cylinder is fixedly connected to the bottom of the material trough, a baffle is slidably arranged inside the material trough, and limit plates are fixedly arranged on both sides of the baffle. The limit plates have waist-shaped grooves along their length, and locking knobs threaded through the waist-shaped grooves are threaded to both sides of the material trough.

[0017] Furthermore, the feeding mechanism also includes a lead screw rotatably mounted on the frame, the driving source includes a third motor, the output end of the third motor is fixedly connected to one end of the lead screw, a sliding block is threaded onto the lead screw, and the sliding block is fixedly connected to the suction cup bracket.

[0018] Furthermore, the suction cup bracket is slidably provided with a plurality of suction cups along the film material conveying direction, and a locking element is provided on one side of the suction cup to lock it with the suction cup bracket.

[0019] Furthermore, a hot pressing mechanism is provided on the top of the frame between the cutting mechanism and the lifting mechanism. The hot pressing mechanism includes an upper hot pressing head and a lower hot pressing head that are disposed opposite to each other on the upper and lower sides of the film material. The upper hot pressing head is fixedly connected to the top of the frame. A fourth cylinder is fixedly installed on the frame, and the end of the piston rod of the fourth cylinder is fixedly connected to the lower hot pressing head.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By using a cutting mechanism, a lifting mechanism, and an independently driveable feeding mechanism, the film material conveying step length and the cutting action frequency are decoupled. Only the feeding speed needs to be adjusted to change the length of the cut film material. There is no need to stop the machine to replace mechanical parts or adjust parameters, which can quickly adapt to the needs of reinforcing films of different lengths.

[0022] 2. By setting up a buffer roller group driven by the first cylinder, and winding the film material between the guide roller group and the buffer roller group, the winding path length changes accordingly when the first cylinder pushes the buffer support to change the angle, thereby realizing the dynamic adjustment of the film material tension, ensuring smooth film material conveying, and avoiding inaccurate cutting dimensions due to tension fluctuations.

[0023] 3. By setting up a suction cup bracket that can move along the conveying direction and setting a suction cup at its bottom, the feeding mechanism can actively grab the reinforcing film in the material trough and continue to convey it forward. It can accurately deliver reinforcing films of different lengths to the subsequent workstations, which is suitable for vertical processing of packaging bags and improves the applicability and automation level of the equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the internal assembly structure of an embodiment of the present invention.

[0027] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0028] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B.

[0029] Figure 6 This is a side sectional view of an embodiment of the present invention.

[0030] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point C.

[0031] Figure 8 This is a schematic diagram of the assembly structure of each mechanism in an embodiment of the present invention.

[0032] Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point D.

[0033] In the above figures: 1. Frame; 11. Base; 12. Vertical plate; 13. Top plate; 2. Material roll; 21. Connecting arm; 22. Take-up roller; 221. Drive gear; 23. First motor; 231. Driven gear; 3. Material guiding mechanism; 31. Guide roller group; 311. Guide roller; 32. Buffer roller group; 321. Buffer bracket; 322. Buffer roller; 323. First cylinder; 33. Power roller group; 331. Power roller; 332. Pressing roller; 333. Second motor; 4. Cutting mechanism; 41. Lower cutter; 411. Cutter holder; 42. Upper cutter 421. Broken blade; 422. Sliding frame; 423. Sliding block; 424. Guide rail; 43. Second cylinder; 5. Lifting mechanism; 51. Material trough; 52. Baffle; 521. Limiting plate; 522. Waist-shaped groove; 53. Locking knob; 54. Third cylinder; 6. Feeding mechanism; 61. Suction cup bracket; 611. Sliding groove; 62. Suction cup; 621. Locking component; 63. Lead screw; 64. Third motor; 7. Hot pressing mechanism; 71. Upper hot pressing head; 711. Upper bracket; 72. Lower hot pressing head; 721. Lower bracket; 73. Fourth cylinder; 74. Connecting plate. Detailed Implementation

[0034] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] like Figure 1-9 As shown in the figure, this embodiment of the invention proposes a packaging bag film-coating and feeding mechanism, which includes a frame 1. The frame 1 is a split structure. Its lower half is a base 11, which is stably placed on the work site by several support legs. The upper half includes two opposing upright plates 12 and a top plate 13 fixedly connected to the top of the two upright plates 12. The upright plates 12 and the top plate 13 together form a hollow frame structure with both ends open. The bottom of the upright plates 12 is fixedly connected to the support base 11 to form a stable installation foundation.

[0036] In this exemplary embodiment, a reinforcing film roll 2 is rotatably mounted at the conveying start end of the top plate 13 of the frame 1. A first motor 23 is fixedly mounted on one side of the frame 1. The first motor 23 is connected to the material roll 2 for driving the material roll 2 to rotate, thereby realizing the active unwinding of the film. Along the direction of conveying the film from the conveying start end to the end end, the top plate 13 is sequentially equipped with a guiding mechanism 3, a cutting mechanism 4, and a lifting mechanism 5. A feeding mechanism 6 is also provided on the side of the frame 1 for transferring the processed film to the packaging bag laminating station.

[0037] In this exemplary embodiment, the material guiding mechanism 3 includes a guide roller group 31, a buffer roller group 32, and a power roller group 33. The guide roller group 31 and the power roller group 33 are fixedly mounted on the top plate 13 and arranged in a straight line along the film material conveying direction. The buffer roller group 32 is located below the guide roller group 31 and between the two vertical plates 12. Specifically, it includes a buffer bracket 321 rotatably mounted on the vertical plate 12 and a buffer roller 322 rotatably mounted inside the buffer bracket 321. The buffer bracket 321 is rotatably connected to the vertical plate 12, so that the entire buffer roller group 32 can rotate within the frame 1. A first cylinder 323 is also provided on the vertical plate 12. The first cylinder 323 is drivenly connected to the buffer roller group 32 and can drive the buffer roller group 32 to rotate, thereby adjusting its tension during the film material conveying process.

[0038] In this exemplary embodiment, the cutting mechanism 4 is located behind the material guiding mechanism 3 and is used to cut the continuously conveyed film material. The cutting mechanism 4 includes an upper cutting blade 42 and a lower cutting blade 41. The lower cutting blade 41 is fixedly connected to the top plate 13, and the upper cutting blade 42 is slidably connected to the top plate 13. The upper cutting blade 42 can slide relative to the lower cutting blade 41. When it slides to the position where it engages with the lower cutting blade 41, the two form a shearing action to cut the film material. A second cylinder 43 is provided on the frame 1. The second cylinder 43 is drivenly connected to the upper cutting blade 42 and is used to drive the upper cutting blade 42 to perform sliding cutting.

[0039] In this exemplary embodiment, the lifting mechanism 5 is located behind the cutting mechanism 4 and is used to receive the cut film sheet. The lifting mechanism 5 includes a material trough 51, which is movably mounted on the top plate 13. A third cylinder 54 is mounted on the frame 1 and is drivenly connected to the material trough 51 to drive the material trough 51 to move up and down, so as to rise to the receiving position when receiving the film and to descend and reset after receiving.

[0040] In this exemplary embodiment, the feeding mechanism 6 is located on the side of the frame 1 and is used to remove the film sheet in the material trough 51 of the lifting mechanism 5 and transfer it to the next station. The feeding mechanism 6 includes a suction cup bracket 61, which can reciprocate along the film conveying direction and can move to a position directly above the material trough 51. At least one suction cup 62 is provided at the bottom of the suction cup bracket 61 for adsorbing and gripping the film sheet in the material trough 51. A drive source is provided on the top plate 13, which is drivenly connected to the suction cup bracket 61 to drive the suction cup bracket 61 to move along the conveying direction to complete the picking and feeding actions.

[0041] This invention can be used for feeding single-layer and composite films. In use, the first motor 23 drives the material roll 2 to rotate and release the film material. The film material is wound between the guide roller group 31 and the buffer roller group 32 in sequence. The tension of the film material can be adjusted by rotating the buffer roller group 32 at a certain angle. Then, the film material is continuously conveyed backward under the traction of the power roller group 33. The second cylinder 43 drives the upper cutting blade 42 and the lower cutting blade 41 to cut the film material into a set length. The cut film material continues to be conveyed forward and falls into the material trough 51. At this time, the third cylinder 54 drives the material trough 51 to rise upward. The suction cup bracket 61 moves along the conveying direction to directly above the material trough 51. The suction cup 62 adsorbs the film material. After the material trough 51 is reset, the suction cup bracket 61 carries the film material and continues to move to the hot-pressing and laminating station of the packaging bag to complete the feeding.

[0042] This invention decouples the film material conveying step length from the cutting action frequency through a cutting mechanism 4, a lifting mechanism 5, and an independently driveable feeding mechanism 6. Only the feeding speed needs to be adjusted to change the length of the cut film material, eliminating the need to stop the machine to replace mechanical parts or adjust parameters, and allowing for rapid adaptation to the needs of reinforcing films of different lengths. By setting up a buffer roller group 32 driven by a first cylinder 323, the film material is wound between the guide roller group 31 and the buffer roller group 32. When the first cylinder 323 pushes the buffer support 321 to change its angle, the winding path length changes accordingly, achieving dynamic adjustment of the film material tension, ensuring smooth film material conveying, and avoiding inaccurate cutting dimensions due to tension fluctuations. Furthermore, by setting up a suction cup support 61 that can move along the conveying direction, with a suction cup 62 at its bottom, the feeding mechanism 6 can actively grab the reinforcing film in the material trough 51 and continue conveying it forward, accurately delivering reinforcing films of different lengths to subsequent workstations. This is suitable for vertical processing of packaging bags, improving the applicability and automation level of the equipment.

[0043] like Figure 1-2 As shown, according to another embodiment, the frame 1 is fixedly provided with an unwinding component for mounting the roll 2 on the starting side of the film material conveying. Specifically, a pair of connecting arms 21 are fixedly connected to the inner walls of the two upright plates 12, and a take-up roller 22 is rotatably arranged between the two connecting arms 21. The roll 2 is fitted onto the take-up roller 22. A driven gear 231 is fixedly provided at one end of the roller shaft of the take-up roller 22. Correspondingly, a first motor 23 is fixedly installed on the outside of one of the connecting arms 21. A drive gear 221 is fixedly provided at the output end of the first motor 23. The drive gear 221 and the driven gear 231 mesh with each other, thereby realizing the active unwinding of the roll 2. The gear transmission method can ensure the smoothness and accuracy of power transmission, so that the unwinding action of the roll 2 is synchronized with the subsequent conveying rhythm. In other embodiments, a belt pulley, sprocket, or other transmission method can also be used to realize power transmission, which can also drive the roll 2 to realize the unwinding action. Those skilled in the art can choose according to the actual assembly space and cost requirements. These equivalent substitutions all fall within the protection scope of the present invention.

[0044] like Figure 1-4 and Figure 6As shown, according to another embodiment, the buffer roller assembly 32 includes a buffer bracket 321 rotatably mounted on the frame 1 and buffer rollers 322 rotatably mounted within the buffer bracket 321. The cylinder body of the first cylinder 323 is hinged to the frame 1, and the piston rod of the first cylinder 323 is hinged to the buffer bracket 321. Specifically, the buffer bracket 321 has an overall frame structure, with its two ends rotatably connected to the inner sidewalls of the two upright plates 12, allowing the entire buffer bracket 321 to rotate within a certain angle range around a horizontal axis. Several buffer rollers 322 are rotatably mounted at intervals along the length of the buffer bracket 321, and these buffer rollers 322 can rotate together with the buffer bracket 321. The end of the cylinder body of the first cylinder 323 is hinged to the inner sidewall of one of the upright plates 12, and the end of the piston rod of the first cylinder 323 is hinged to the sidewall of the buffer bracket 321. The extension and retraction of the first cylinder 323 can drive the buffer bracket 321 around its rotation fulcrum. Rotation; In this embodiment, further, a plurality of guide rollers 311 are arranged at intervals along the film material conveying direction and fixedly mounted on the top plate 13 of the frame 1. The two ends of the roller shaft of each guide roller 311 are rotatably connected to the top plate 13, so that the guide rollers 311 can rotate freely with the traction of the film material. Based on the above configuration, after the film material is drawn out from the upper guide roller group 31 during the conveying process, it alternately winds between the guide rollers 311 and the buffer rollers 322, so that the film material forms a multiple-fold travel path between the guide rollers 311 and the buffer rollers 322, which significantly increases the travel of the film material. When the first cylinder 323 pushes the buffer bracket 321 to change the angle, the relative position between the buffer rollers 322 and the upper fixed guide rollers 311 changes, thereby changing the length and wrap angle of the film material winding path, realizing the dynamic adjustment of the film material tension. This structure can respond to the tension fluctuations during the conveying process in real time, ensuring that the film material always maintains a stable tension state during high-speed conveying.

[0045] like Figure 1-3 and Figure 6-9As shown, according to another embodiment, the power roller assembly 33 includes a power roller 331 rotatably mounted on the frame 1 and a pressing roller 332 positioned opposite the power roller 331. A gap is formed between the pressing roller 332 and the power roller 331 for the film material to pass through. A second motor 333 is fixedly mounted on the frame 1, and the output end of the second motor 333 is coaxially and fixedly connected to the power roller 331. Specifically, the power roller 331 is horizontally rotatably mounted below the top plate 13, and one end of its roller shaft is fixedly connected to the output end of the second motor 333, which is fixed on the vertical plate 12, via a coupling. The pressing roller 332 is positioned directly above the power roller 331. Both ends are mounted on the top plate 13 via bearing seats. A gap is left between the pressing roller 332 and the power roller 331 for the film material to pass through. The film material is clamped by the power roller 331 and the pressing roller 332 and is stably pulled forward by the friction between the two. In practical applications, multiple power roller groups 33 can be set at intervals on the frame 1 along the conveying direction according to the length of the film material conveying distance and the required traction force. Each power roller group 33 works together to provide continuous and stable conveying power for the film material, ensuring that the film material will not slip or accumulate due to resistance accumulation during long-distance conveying, thereby flexibly adapting to the needs of different specifications of packaging bag production for the feeding stroke.

[0046] like Figure 1 and Figure 6-9As shown, according to another embodiment, the cutting mechanism 4 further includes a sliding frame 421 slidably disposed on the frame 1. The upper cutting blade 42 is fixedly disposed within the sliding frame 421. The frame 1 is provided with a guide rail 423 for the sliding frame 421 to be embedded and slid. The piston rod of the second cylinder 43 is fixedly connected to the sliding frame 421. Specifically, the sliding frame 421 is a rectangular frame structure, and its outline dimension is larger than the width of the upper cutting blade 42, which is used to provide a stable mounting base for the blade. The upper cutting blade 42 is fixedly mounted on the inner top of the sliding frame 421 with the blade facing downwards on the top plate 13 of the frame 1. A clearance opening is provided at the corresponding cutting position for the sliding frame 421 to pass through. A pair of guide rails 423 are fixedly provided on both sides of the clearance opening along the vertical direction. The cross-section of the guide rails 423 is preferably dovetail-shaped or rectangular. Sliding blocks 422 that cooperate with the guide rails 423 are fixedly provided on both sides of the sliding frame 421. The sliding blocks 422 are embedded in the grooves of the guide rails 423, so that the sliding frame 421 can slide smoothly up and down along the guide rails 423 without swaying. The second cylinder 43 is fixedly installed on the cutter seat 411 or the frame 1. Its piston rod extends vertically downward and is fixedly connected to the outer frame wall or connecting lug of the sliding frame 421. During transport, the film material passes horizontally through the gap between the upper cutting blade 42 and the lower cutting blade 41. When cutting is required, the piston rod of the second cylinder 43 extends, pushing the sliding frame 421 to slide downward along the guide rail 423, causing the upper cutting blade 42 to descend rapidly and form a shearing action with the fixed lower cutting blade 41, thus neatly cutting the film material. After cutting, the piston rod retracts, and the sliding frame 421 and the upper cutting blade 42 move upward to reset, clearing the film material transport channel. Based on the above settings, it is possible to ensure that the upper cutting blade 42 maintains a precise cutting position during frequent reciprocating motion, ensuring a neat cut and extending the service life of the blade.

[0047] like Figure 2-5As shown, according to another embodiment, the piston rod of the third cylinder 54 is fixedly connected to the bottom of the material trough 51. A baffle 52 is slidably arranged inside the material trough 51. Limiting plates 521 are fixedly arranged on both sides of the baffle 52. The limiting plates 521 have waist-shaped grooves 522 along their length. Locking knobs 53 threaded through the waist-shaped grooves 522 are threaded to both sides of the material trough 51. Specifically, the material trough 51 is generally elongated and its cross-section is U-shaped. The middle is concave to form a groove, and the two sides are bent upward to form material-blocking protrusions for receiving and accommodating the cut reinforcing film sheet. The baffle 52 is arranged perpendicular to the length of the material trough 51 inside the material trough 51. Its bottom contour matches the groove part of the material trough 51, so that the baffle 52 can slide against the bottom of the groove. The limiting plates 521 on both sides of the baffle 52 are attached to the horizontal upper surface of the material-blocking protrusions on both sides of the material trough 51, thereby guiding and limiting the sliding of the baffle 52. For use, the limiting plate 521 has a waist-shaped groove 522 along the length of the material trough 51. Correspondingly, a locking knob 53 is threadedly connected to the material-stopping protrusions on both sides of the material trough 51. The rod of the locking knob 53 passes through the waist-shaped groove 522 on the limiting plate 521 and engages with the threaded part of the material trough 51. Based on the above configuration, when it is necessary to adjust the position of the baffle 52 to accommodate reinforcing films of different lengths, the operator loosens the locking knob 53 to disengage the limiting plate 521 from the surface of the material trough 51. In the tightened state, push the baffle 52 to the desired position along the guide range of the waist-shaped groove 522, and then tighten the locking knob 53. The end of the knob presses and fixes the limiting plate 521 to the material groove 51, thereby locking the baffle 52 in a new position. This adjustable baffle 52 structure can match the effective bearing length of the material groove 51 with the actual length of the reinforcing film, ensuring that the film is accurately positioned at the front end in the material groove 51, providing a reliable guarantee for the precise gripping of the subsequent suction cup bracket 61.

[0048] like Figure 6-9As shown, according to another embodiment, the feeding mechanism 6 further includes a lead screw 63 rotatably mounted on the frame 1. The driving source includes a third motor 64, the output end of which is fixedly connected to one end of the lead screw 63. A sliding block 422 is threaded onto the lead screw 63, and the sliding block 422 is fixedly connected to the suction cup bracket 61. Specifically, a bearing seat is fixedly mounted on one side of the top plate 13 along the film conveying direction. Both ends of the lead screw 63 are rotatably supported in the bearing seat, allowing the lead screw 63 to rotate freely around its own axis. The third motor 64 is fixedly mounted at the end of the frame 1, and its output shaft is coaxially fixedly connected to one end of the lead screw 63 to provide rotational power for the lead screw 63. The sliding block 422 is sleeved on... The lead screw 63 has an internal thread that engages with the lead screw 63 thread. The rotational motion of the lead screw 63 is converted into the linear movement of the sliding block 422 through the thread engagement. One side of the sliding block 422 is fixedly connected to the suction cup bracket 61. The suction cup bracket 61 extends towards the middle of the top plate 13 and is suspended above the material trough 51. When the third motor 64 drives the lead screw 63 to rotate in the forward or reverse direction, the sliding block 422 drives the suction cup bracket 61 to reciprocate along the axis of the lead screw 63. This allows the suction cup bracket 61 to move precisely above the material trough 51 to grab the reinforcing film sheet and continue to move forward to the next station. This achieves precise control and stable holding of the position of the suction cup bracket 61, ensuring the repeatability and positioning accuracy of the feeding action.

[0049] like Figure 6-9As shown, according to another embodiment, a plurality of suction cups 62 are slidably arranged on the suction cup bracket 61 along the film material conveying direction. A locking member 621 that can lock with the suction cup bracket 61 is provided on one side of each suction cup 62. Specifically, the suction cup bracket 61 is an elongated mounting box extending along the conveying direction. A front suction cup is fixedly arranged at its end near the material trough 51. The front suction cup is fixed in position and is used to grip the front end of the reinforcing film sheet each time it is picked up. A plurality of rear suction cups are also arranged on the suction cup bracket 61 behind the front suction cups. These rear suction cups are used to grip the rear end of the reinforcing film sheet to prevent long sheets from sagging or swinging during transport. A slider or mounting seat is provided on the top of the rear suction cups. The slider or mounting seat is slidably fitted inside the suction cup bracket 61, allowing the rear suction cups to move along the length of the bracket. The suction cup bracket 61 has a freely adjustable position. A through-sliding groove 611 is provided on both sides of the bracket along its length. This groove provides guidance and a limiting range for adjusting the rear suction cup. The locking element 621 can include conventional locking structures such as locking bolts, pins, or buckles. When the position of the rear suction cup needs to be adjusted, the operator loosens the locking element 621, allowing the locking bolt to relax within the sliding groove 611. Then, the operator pushes the rear suction cup along the bracket to the desired position and locks the locking element 621, thus firmly locking the rear suction cup in the adjusted position. Based on the above configuration, the number and distribution of suction cups 62 can be flexibly adjusted according to the actual length of the reinforcing membrane, ensuring that membranes of different specifications can be stably adsorbed during transport, avoiding membrane displacement or falling due to improper adsorption points.

[0050] like Figure 6-9As shown, according to another embodiment, a hot pressing mechanism 7 is further provided on the top of the frame 1 between the cutting mechanism 4 and the lifting mechanism 5. The hot pressing mechanism 7 includes an upper hot pressing head 71 and a lower hot pressing head 72 disposed opposite to each other on the upper and lower sides of the film material. The upper hot pressing head 71 is fixedly connected to the top of the frame 1. A fourth cylinder 73 is fixedly installed on the frame 1. The piston rod end of the fourth cylinder 73 is fixedly connected to the lower hot pressing head 72. Specifically, the upper hot pressing head 71 is fixedly installed above the top plate 13 of the frame 1 by an upper bracket 711. The upper bracket 711 has an inverted U-shaped structure, and its two ends are fixedly connected to the top plate 13. The upper hot pressing head 71 is suspended below the crossbeam of the U-shaped bracket, so that the upper... The hot press head 71 is located above the film material conveying plane and remains in a fixed position. A lower support 721 is fixedly installed at the corresponding position at the bottom of the top plate 13. The lower support 721 is also U-shaped, with its opening facing upward toward the top plate 13, opposite to the opening of the upper support 711. The fourth cylinder 73 is fixedly installed at the bottom of the lower support 721. Its piston rod extends vertically upward through the bottom wall of the lower support 721 and into the U-shaped opening. A connecting plate 74 is fixedly connected to the end of the piston rod, and the lower hot press head 72 is fixedly installed on the connecting plate 74. A working clearance hole is opened in the corresponding area between the upper and lower hot press heads 72 on the top plate 13, so that the lower hot press head 72 can pass through the top plate 13 and meet the upper hot press head 71 when it rises.

[0051] In practical application, the upper hot pressing head 71 and the lower hot pressing head 72 are configured as a pair, corresponding to the upper and lower edges of the film material respectively, for hot pressing the reinforcing film itself during continuous conveying. When the film material is conveyed to the hot pressing station, the piston rod of the fourth cylinder 73 extends, pushing the connecting plate 74 and the lower hot pressing head 72 fixed thereon to rise vertically. The lower hot pressing head 72 and the upper hot pressing head 71 together clamp the edge area of ​​the film material. By simultaneously heating and pressurizing the upper and lower hot pressing heads 72, a pre-indentation is formed on the edge of the reinforcing film or it is locally shaped, so as to facilitate accurate alignment and firm bonding with the packaging bag in subsequent processes. After hot pressing is completed, the piston rod retracts, and the lower hot pressing head 72 descends to reset, clearing the film material conveying channel. This allows for flexible control of the timing and pressure of the hot pressing action, ensuring that the hot pressing process is coordinated with the preceding and following conveying and cutting processes, and guaranteeing the continuity of the production cycle.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A film-coating feeding mechanism, comprising a frame (1), characterized in that: The frame (1) has a material roll (2) rotatably mounted at the starting end of the conveying process. A first motor (23) that can drive the material roll (2) to rotate is fixedly mounted on one side of the frame (1). A material guiding mechanism (3), a cutting mechanism (4) and a lifting mechanism (5) are also sequentially mounted on the top of the frame (1) along the film material conveying direction. A feeding mechanism (6) is also mounted on the side of the frame (1). The material guiding mechanism (3) includes a guide roller (311) group (31), a buffer roller (322) group (32) and a power roller (331) group (33). The guide roller (311) group (31) and the power roller (331) group (33) are fixedly installed on the top of the frame (1). The buffer roller (322) group (32) is rotatably installed in the frame (1). The frame (1) is also equipped with a first cylinder (323) that can drive the buffer roller (322) group (32) to rotate. The cutting mechanism (4) includes an upper cutting blade (42) and a lower cutting blade (41). The lower cutting blade (41) is fixedly connected to the top of the frame (1), and the upper cutting blade (42) is slidably connected to the top of the frame (1). The upper cutting blade (42) can slide to cut with the lower cutting blade (41). A second cylinder (43) is provided on the frame (1) to drive the upper cutting blade (42) to slide. The lifting mechanism (5) includes a material trough (51) that is vertically and vertically disposed on the top of the frame (1), and a third cylinder (54) that can drive the material trough (51) to move is provided on the frame (1). The feeding mechanism (6) includes a suction cup bracket (61) that can move along the film material conveying direction. The suction cup bracket (61) can be moved to the top of the material trough (51). At least one suction cup (62) is provided at the bottom of the suction cup bracket (61). A drive source that can drive the suction cup bracket (61) to move is provided on the frame (1).

2. The packaging bag laminating and feeding mechanism as described in claim 1, characterized in that: The output end of the first motor (23) is fixedly provided with a drive gear (221), and a driven gear (231) that can mesh with the drive gear (221) is fixedly provided on one side of the material roll (2).

3. The packaging bag laminating and feeding mechanism as described in claim 1, characterized in that: The buffer roller (322) group (32) includes a buffer bracket (321) rotatably mounted on the frame (1) and a buffer roller (322) rotatably mounted inside the buffer bracket (321). The cylinder body of the first cylinder (323) is hinged to the frame (1), and the piston rod of the first cylinder (323) is hinged to the buffer bracket (321).

4. The packaging bag laminating and feeding mechanism as described in claim 3, characterized in that: The guide roller (311) group (31) includes several guide rollers (311) that are horizontally rotatably arranged on the top of the frame (1), and the film material is alternately wound between the guide rollers (311) and the buffer rollers (322) along the conveying direction.

5. The packaging bag laminating and feeding mechanism as described in claim 4, characterized in that: The power roller (331) group (33) includes a power roller (331) rotatably mounted on the frame (1) and a pressing roller (332) positioned above the power roller (331). A gap is formed between the pressing roller (332) and the power roller (331) for the film material to pass through. A second motor (333) is fixedly mounted on the frame (1), and the output end of the second motor (333) is coaxially fixedly connected to the power roller (331).

6. The packaging bag laminating and feeding mechanism as described in claim 1, characterized in that: The cutting mechanism (4) further includes a sliding frame (421) slidably disposed on the frame (1), the upper cutting blade (42) is fixedly disposed in the sliding frame (421), the frame (1) is provided with a guide rail (423) for the sliding frame (421) to be embedded and slid, and the piston rod of the second cylinder (43) is fixedly connected to the sliding frame (421).

7. The packaging bag laminating and feeding mechanism as described in claim 1, characterized in that: The piston rod of the third cylinder (54) is fixedly connected to the bottom of the material trough (51). A baffle (52) is slidably arranged inside the material trough (51). Limiting plates (521) are fixedly arranged on both sides of the baffle (52). The limiting plates (521) have waist-shaped grooves (522) along the length direction. Locking knobs (53) are threadedly connected to both sides of the material trough (51) and pass through the waist-shaped grooves (522).

8. The packaging bag laminating and feeding mechanism as described in claim 1, characterized in that: The feeding mechanism (6) also includes a lead screw (63) rotatably mounted on the frame (1). The driving source includes a third motor (64). The output end of the third motor (64) is fixedly connected to one end of the lead screw (63). A sliding block (422) is threaded onto the lead screw (63). The sliding block (422) is fixedly connected to the suction cup bracket (61).

9. The packaging bag laminating and feeding mechanism as described in claim 8, characterized in that: The suction cup bracket (61) is slidably provided with a plurality of suction cups (62) along the film material conveying direction, and a locking member (621) is provided on one side of the suction cup (62) to lock it with the suction cup bracket (61).

10. The packaging bag laminating and feeding mechanism as described in claim 1, characterized in that: A hot pressing mechanism (7) is also provided on the top of the frame (1) between the cutting mechanism (4) and the lifting mechanism (5). The hot pressing mechanism (7) includes an upper hot pressing head (71) and a lower hot pressing head (72) arranged opposite to each other on the upper and lower sides of the film material. The upper hot pressing head (71) is fixedly connected to the top of the frame (1). A fourth cylinder (73) is fixedly provided on the frame (1). The piston rod end of the fourth cylinder (73) is fixedly connected to the lower hot pressing head (72).

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