Automatic film connecting device

Abstract

The invention relates to the field of automatic material changing of packaging machines, in particular to an automatic film connecting device. The two mounting rollers are arranged at an interval and are used for placing a packaging film roller; the number of the automatic film pulling mechanisms is two, and each automatic film pulling mechanism corresponds to the corresponding mounting roller and is used for pulling the free end of the packaging film mounted on the corresponding mounting roller to a set position; and the gluing mechanism is arranged between the two mounting rollers and used for gluing the free end of the packaging film pulled to the set position through the automatic film pulling mechanism. The packaging machine has the effects that the packaging film can be replaced without shutdown, and the packaging efficiency of the packaging machine is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of automatic material replacement of packaging machines, and in particular to an automatic film splicing device. Background Art

[0002] Pillow packaging machines, as a common automated packaging equipment in modern industrial production, are widely used in the food, pharmaceutical, and daily necessities sectors. Increasing their automation level is crucial for improving production efficiency and product quality. To maintain packaging efficiency, the continuous operation of the packaging machine is crucial. Any unplanned downtime directly impacts production efficiency and costs. Therefore, ensuring that the packaging machine does not stop during operation due to packaging material changes is a key factor in improving production efficiency.

[0003] In practical applications, existing pillow packaging machines often encounter the challenge of replacing the packaging film. To do so, the operator must manually remove the exhausted film roll, replace it with a new one, and connect the free end of the new roll to the old one. This method not only consumes the operator's time and energy, but also inevitably interrupts the packaging machine during the replacement process, resulting in a significant decrease in production efficiency. Furthermore, the downtime required for each film replacement accumulates with increasing frequency, further impacting overall production progress. Existing replacement solutions cannot replace the packaging film without shutting down the machine, which in turn affects the packaging machine's ability to operate continuously and its production efficiency. Summary of the Invention

[0004] In order to achieve replacement of the packaging film without stopping the machine and ensure the packaging efficiency of the packaging machine, the present application provides an automatic film splicing device.

[0005] The automatic film splicing device provided in this application adopts the following technical solution: An automatic film splicing device, comprising: Support plate; Mounting rollers, two of which are provided at intervals for placing packaging film rollers; Two groups of automatic film-pulling mechanisms are provided, each group of the automatic film-pulling mechanisms corresponds to each of the mounting rollers, and is used to pull the free end of the packaging film mounted on the mounting roller to a set position; The gluing mechanism is arranged between the two installation rollers and is used for gluing the free end of the packaging film pulled to a set position by the automatic film pulling mechanism.

[0006] By adopting the above technical solution, two installation rollers arranged at intervals can be pre-installed with new packaging film rollers respectively. When one packaging film roller is used up, the automatic film pulling mechanism pulls the free end of the new packaging film to the set position, and the automatic bonding of the new and old packaging films is completed through the gluing mechanism, thereby avoiding shutdown to replace the packaging film, ensuring continuous operation of the packaging machine, and improving production efficiency.

[0007] Optionally, the automatic film-pulling mechanism includes a mounting frame rotatably connected to the support plate, a suction cup mounted on the mounting frame for adsorbing the packaging film, a telescopic assembly for driving the suction cup to extend and retract, and a rotating assembly for driving the suction cup to rotate.

[0008] By adopting this technical solution, the suction cup is stably installed by rotating the mounting bracket connected to the support plate. The suction cup absorbs the packaging film and achieves telescopic movement under the action of the telescopic assembly. The rotation assembly enables the suction cup to rotate, accurately pulling the free end of the packaging film to the set position, effectively improving the automation level of packaging film replacement and ensuring the continuity and efficiency of the replacement process.

[0009] Optionally, a guide roller is rotatably connected to the bracket, and the guide roller can abut and guide the packaging film adsorbed by the suction cup.

[0010] By adopting the above technical solution, the setting of the guide roller can guide the packaging film adsorbed by the suction cup, effectively reduce the deviation of the packaging film during the pulling process, improve the positioning accuracy of the packaging film, ensure the accuracy of the glue coating position, and thus improve the working efficiency and film quality of the automatic film splicing device.

[0011] Optionally, the mounting frame includes two mounting rods fixedly connected to the support plate, and a support plate fixedly connected between the two mounting rods and located at one end of the mounting rod away from the support plate; the rotating assembly includes a rotating rod rotatably connected between the support plate and the support plate, a rotating motor fixedly connected to the support plate for driving the rotating rod to rotate, and a bracket fixedly connected to the mounting rod, and the suction cup is mounted on the bracket.

[0012] By adopting the above technical solution, the mounting frame is fixed to the support plate through the mounting rod and the support plate, and the rotating assembly realizes the rotation of the suction cup through the rotating rod, the rotating motor and the bracket, ensuring that the suction cup can accurately absorb and release the packaging film, thereby improving the accuracy and stability of the automatic film pulling process.

[0013] Optionally, the telescopic assembly includes a first cylinder fixedly connected to the bracket, and the suction cup is fixedly connected to the piston rod of the first cylinder.

[0014] By adopting the above technical solution, the setting of the first cylinder enables the suction cup to perform telescopic movement, thereby accurately moving the free end of the packaging film to the set position, ensuring the accurate transmission of the free end of the packaging film and improving the accuracy and reliability of the automatic conjunctival process.

[0015] Optionally, the telescopic component is provided with a pressing component which rotates from one side of the suction cup to the other side of the suction cup as the suction cup is extended or retracted, and the pressing component can press the packaging film against the suction cup.

[0016] By adopting the above technical solution, the tightening component can rotate from one side of the suction cup to the other side during the extension and contraction of the suction cup, thereby pressing the packaging film against the suction cup, ensuring that the packaging film will not fall off or shift during the pulling process, thereby improving the transmission stability and reliability of the packaging film.

[0017] Optionally, the clamping assembly includes a mounting plate rotatably connected to the bracket, a clamping roller rotatably connected to one end of the mounting plate, a force spring fixed between the bracket and the mounting plate for driving the mounting plate to rotate, and a transmission member arranged between the telescopic end of the telescopic assembly and the mounting plate for limiting the mounting plate to rotate only with the telescopic assembly. When the mounting plate rotates on the mounting frame, it can drive the clamping roller to rotate from one side of the suction cup to the other side of the suction cup.

[0018] By adopting the above technical solution, when the telescopic assembly is extended or retracted, the transmission member can release the restriction on the mounting plate, so that the mounting plate can rotate under the action of the force spring, thereby driving the clamping roller to rotate from one side of the suction cup to the other side of the suction cup, realizing the synchronous movement of the clamping roller with the telescopic assembly.

[0019] Optionally, the transmission member includes a first plate fixed to the telescopic end of the telescopic assembly and a second plate fixed to the first plate. The second plate is provided with a sliding groove along its own length direction. A sliding rod slidingly engaged with the sliding groove is fixed to the mounting plate. The sliding rod abuts against one end of the sliding groove under the elastic force of the force spring to limit the movement of the sliding rod through the sliding groove.

[0020] By adopting the above technical solution, when the telescopic component is extended, the telescopic end of the telescopic component will also synchronously drive the first plate and the second plate to move, thereby driving the end of the slide groove to slide. At this time, the slide groove will release the restriction on the slide rod, so that the mounting plate can rotate under the drive of the force spring, thereby driving the clamping roller to rotate from one side of the suction cup to the other side of the suction cup. At this time, the slide rod also slides in the slide groove; when the telescopic component is retracted, under the abutment of the end of the slide groove, the slide rod is driven to slide in the opposite direction, thereby driving the mounting plate to rotate in the opposite direction, and then the clamping roller can be driven to rotate from the other side of the suction cup to one side of the suction cup to reset.

[0021] Optionally, the gluing mechanism includes a beam longitudinally slidably connected to the mounting plate, a mounting plate transversely slidably connected to the beam, a gluing cylinder fixed to the mounting plate, a mounting platform fixed to the piston rod of the gluing cylinder, a first mounting part rotatably connected to the mounting platform for placing the double-sided tape, a second mounting part rotatably connected to the mounting platform for wrapping the coated paper layer of the double-sided tape, a cutting assembly for cutting the adhesive layer of the double-sided tape, and a pressing assembly for pressing the double-sided tape to adhere to the packaging film.

[0022] By adopting the above technical solution, the cutting component can cut the double-sided tape into a set length and transfer it to the free end of the packaging film for precise placement. The double-sided tape can be adhered to the packaging film by pressing the component to achieve a reliable connection between the free ends of the packaging film. The second mounting part can automatically rewind the laminated paper layer after the adhesive layer of the double-sided tape is adhered to the packaging film, ensuring the stability and continuity when the packaging film is replaced, and improving the packaging efficiency of the packaging machine.

[0023] Optionally, the cutting assembly is located between the first mounting portion and the pressing assembly, and includes a cutting plate fixed to the mounting table and a placement plate vertically fixed to one side of the cutting plate. A cutting knife and a cutting cylinder for driving the cutting knife to slide in the direction of the placement plate are slidably connected to the placement plate, and an avoidance groove for double-sided tape to pass through is provided on the placement plate.

[0024] By adopting the above technical solution, the cutting assembly can accurately cut the adhesive layer of the double-sided tape. The cutting knife slides toward the placement plate under the action of the cutting cylinder, thereby achieving stable and precise cutting action. By operating the extension and contraction frequency of the cutting cylinder, the length of the adhesive layer of the double-sided tape after cutting can be controlled, ensuring that the size of the double-sided tape segments is consistent, thereby improving the accuracy and efficiency of the gluing process.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. This application provides two installation rollers for installing packaging films, and the automatic film pulling mechanism can automatically pull the free end of the packaging film to be replaced to a set position. The gluing mechanism can automatically apply glue to the free end of the packaging film to be replaced, facilitating the connection between the new and old packaging films, and realizing automatic film connection without the need for manual replacement of the packaging film by staff. Moreover, there is no need to stop the machine during the film connection process, which greatly improves the packaging efficiency of the packaging machine. 2. The arrangement of the pressing assembly enables the pressing roller to rotate from one end of the suction cup to the other end of the suction cup as the telescopic assembly expands and contracts, so that the packaging film can always be in contact with the suction cup; 3. The setting of the cutting knife and the pressing component enables the cutting knife to cut the adhesive layer of the double-sided tape into a set length, making it easier to adhere the adhesive layer to the packaging film, while the pressing component squeezes the double-sided tape, thereby abutting the double-sided tape to adhere to the packaging film. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of this application.

[0027] Figure 2 It is a schematic diagram of the main structure of this application.

[0028] Figure 3 It is a structural diagram to reflect the automatic film pulling mechanism.

[0029] Figure 4 It is a structural diagram designed to reflect the structure of the tightening component.

[0030] Figure 5 It is a structural diagram after one of the automatic film-pulling mechanisms is hidden.

[0031] Figure 6 yes Figure 5 Enlarged schematic diagram of point A in the middle.

[0032] Figure 7 It is a structural diagram made to reflect the structure of the gluing mechanism.

[0033] Figure 8 This is a cross-sectional diagram to illustrate the structure of the glue removal component.

[0034] Explanation of reference numerals: 1. Support plate; 2. Mounting roller; 3. Automatic film pulling mechanism; 31. Mounting frame; 311. Mounting rod; 312. Support plate; 32. Suction cup; 33. Telescopic assembly; 331. First cylinder; 34. Rotating assembly; 341. Rotating rod; 3411. Extension rod; 342. Rotating motor; 343. Bracket; 3431. Rotating plate; 3432. Fixed rod; 35. Guide roller; 36. Limiting assembly; 361. First infrared emitter; 362. First infrared emitter External receiver; 37, limit block; 38, rubber block; 4, glue application mechanism; 41, crossbeam; 411, guide rail; 42, sliding plate; 421, glue application cylinder; 43, mounting platform; 44, first mounting portion; 441, first mounting axis; 4411, fixing groove; 442, first limit plate; 443, second limit plate; 444, fixing member; 4441, fixing nut; 4442, fixing pin; 445, placement space; 45, second mounting portion; 451, second mounting axis; 45 2. Fixing card; 453. Gluing motor; 454. Card slot; 46. Cutting assembly; 461. Cutting plate; 462. Placement plate; 463. Cutting knife; 464. Cutting cylinder; 465. Guide roller; 466. Avoidance groove; 47. Pressing assembly; 471. Pressing plate; 472. Pressing roller; 48. Longitudinal cylinder; 49. Horizontal cylinder; 5. Clamping assembly; 51. Mounting plate; 511. Third plate; 512. Fourth plate; 52. Clamping roller; 53. Transmission member; 531. First plate; 532, second plate; 533, slide groove; 54, force spring; 55, slide rod; 6, glue removal component; 61, driving roller; 62, mounting frame; 63, glue roller; 64, fixed adjustment member; 641, fixed block; 642, adjustment bolt; 65, glue removal space; 7, detection component; 71, detection shaft; 72, detection roller; 73, detection plate; 74, detection port; 75, proximity switch; 8, second detection member; 81, second infrared transmitter; 82, second infrared receiver. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The embodiment of the present application discloses an automatic film splicing device. Figure 1 and Figure 2The automatic film splicing device includes a support plate 1, two installation rollers 2 arranged at intervals, two sets of automatic film pulling mechanisms 3 and a gluing mechanism 4. Among them, the support plate 1 serves as the basic supporting structure of the entire automatic film splicing device and plays a key fixing role. The support plate 1 can be made of steel plate, which can be flat or box-shaped. The two installation rollers 2 are installed on both sides of one side of the support plate 1. The two installation rollers 2 are arranged in parallel to place two rolls of packaging film, so that when one roll of packaging film is used up, the other roll can be used. There is a certain interval between the two installation rollers 2, and this design can ensure that the packaging film is pulled open smoothly. When one roll of packaging film is used up, the other roll can be immediately unfolded to complete the replacement of the packaging film.

[0037] The automatic film-pulling mechanism 3 is located on the side of the support plate 1 facing the mounting rollers 2. Two sets of automatic film-pulling mechanisms 3 are provided, one for each mounting roller 2. The automatic film-pulling mechanism 3 pulls the free end of the packaging film mounted on the mounting rollers 2 to a set position. The gluing mechanism 4 then bonds the free end of the new packaging film to the trailing end of the old film, achieving automatic film bonding.

[0038] Specifically, refer to Figure 2 and Figure 3 Each automatic film-pulling mechanism 3 comprises a mounting frame 31, a suction cup 32, a telescopic assembly 33, and a rotating assembly 34. The mounting frame 31 comprises two spaced-apart mounting rods 311 fixed to the support plate 1, and a support plate 312 fixed between the two mounting rods 311. The support plate 312 is located at the end of the two mounting rods 311 facing away from the support plate 1. The two mounting rods 311 secure the support plates 312 to the support plate 1, ensuring overall structural stability. The mounting rods 311 are made of round steel, while the support plate 312 is a curved, flat plate fixed to the end of the mounting rods 311 facing away from the support plate 1. The rotating assembly 34 is mounted on the support plate 1 and the mounting frame 31 to rotate the suction cup 32 toward the mounting roller 2. The telescopic assembly 33 is mounted on the rotating assembly 34 to be rotated by the rotating assembly 34. The suction cup 32 is mounted on the telescopic assembly 33 so that the telescopic assembly 33 drives the suction cup 32 to extend and retract, thereby bringing the suction cup 32 into contact with the packaging film, thereby adsorbing the free end of the packaging film. The suction cup 32 is mounted on the telescopic assembly 33 and is used to adhere to the packaging film as the telescopic assembly 33 expands and contracts. The suction cup 32 is made of silicone and has a round, flat design, providing a stable adhesion to the surface of the packaging film. It is understood that the suction cup 32 is equipped with a vacuum pump for evacuating the interior of the suction cup 32. When the suction cup 32 abuts the packaging film, the vacuum pump creates a vacuum between the suction cup 32 and the packaging film, maintaining adhesion between the suction cup 32 and the packaging film.

[0039] The rotating assembly 34 includes a rotating rod 341 rotatably connected between the support plate 1 and the support plate 312, a rotating motor 342 fixed to the support plate 1 for rotating the rotating rod 341, and a bracket 343 fixed to the mounting rod 311. The suction cup 32 is mounted on the bracket 343 via the telescopic assembly 33. During use, the rotating motor 342 rotates the rotating rod 341, which in turn drives the suction cup 32 to a stable position via the bracket 343. The rotating motor 342 can be a servo motor, whose precise positioning ensures accurate movement of the suction cup 32.

[0040] The bracket 343 comprises two rotating plates 3431, one end of which is fixed to the rotating rod 341, and a fixed rod 3432 fixed between the two rotating plates 3431. The two rotating plates 3431 are spaced apart and parallel to each other along the length of the rotating rod 341. The telescopic assembly 33 comprises a first cylinder 331 fixed to the fixed rod 3432, and the suction cup 32 is fixed to the piston rod of the first cylinder 331. The first cylinder 331 drives the suction cup 32 to the set position by extending and retracting the piston rod.

[0041] When a roll of packaging film is finished and needs to be replaced, the rotary motor 342 is activated, driving the rotating rod 341 to rotate, which in turn drives the bracket 343 attached to the rotating rod 341. The bracket 343 then rotates the first cylinder 331 and the suction cup 32 attached to the piston rod of the first cylinder 331, so that the suction cup 32 faces the packaging film. To pull the film, the rotary motor 342 rotates the suction cup 32 until it faces the packaging film. The first cylinder 331 then moves the suction cup 32 toward the packaging film, causing it to contact the free end of the packaging film and secure it. The piston rod of the first cylinder 331 is then retracted, pulling the free end of the packaging film apart (initially, the free end is secured to the film roll with tape). The rotary motor 342 is then reversed, moving the free end of the packaging film to the desired position.

[0042] The automatic film-pulling mechanism 3 also includes a guide roller 35 for guiding the free end of the pulled packaging film. The guide roller 35 is rotatably connected between the two rotating plates 3431 and serves to guide the movement of the packaging film. The guide roller 35 can be made of a smooth nylon material to facilitate smooth passage of the packaging film. When the suction cup 32 moves the free end of the packaging film to the set position, the guide roller 35 also guides the free end of the packaging film and the portion of the packaging film between the mounting roller 2, ensuring stable movement of the packaging film.

[0043] A limit assembly 36 is also provided for limiting the rotational position of the suction cup 32. This limit assembly 36 includes a first infrared emitter 361 fixed to a mounting rod 311 away from the suction cup 32, an extension rod 3411 fixed to the rotating rod 341, and a first infrared receiver 362 fixed to the extension rod. Under normal conditions, the first infrared receiver 362 receives signals from the first infrared emitter 361, thereby fixing the initial position of the suction cup 32. When the rotating motor 342 and the first cylinder 331 drive the suction cup 32 to adhere to the free end of the packaging film, the extension rod 3411 rotates synchronously with the rotating rod 341, preventing the first infrared receiver 362 from receiving the signal from the first infrared emitter 361. When the suction cup 32 returns to its original position after adhering to the packaging film, the first infrared receiver 362 receives the signal from the first infrared emitter 361 again, thereby fixing the suction cup 32 in its original position.

[0044] To prevent the suction cup 32 from continuing to rotate after it has been reset, potentially causing damage to the suction cup 32 and other components, two stoppers 37 are fixed to a mounting rod 311 near the suction cup 32. Each stopper 37 is fixed to a rubber block 38, and both stoppers 37 are located directly below the two rotating plates 3431. If an unexpected situation occurs after the suction cup 32 has been reset, causing the rotary motor 342 to continue rotating the suction cup 32, the rotating plates 3431 will contact the rubber blocks 38, thereby limiting its continued rotation and securing the suction cup 32 at its rotational limit.

[0045] It can be understood that the two automatic film-pulling mechanisms 3 are arranged opposite to each other, so that the two automatic film-pulling mechanisms 3 can respectively pull the free ends of the two packaging films to the same set position.

[0046] Generally, when packaging items, a pattern is printed on one side of the packaging film. Therefore, in order to ensure that the pattern after packaging is always located on the outside of the items, when placing the packaging films on the installation roller 2, the placement directions of the two packaging films need to be consistent, and one automatic film-pulling mechanism 3 will follow the winding direction of the packaging film when pulling out the free end of the packaging film; the other automatic film-pulling mechanism 3 will go against the winding direction of the packaging film. After the suction cup 32 of the automatic film-pulling mechanism 3 that goes against the winding direction of the packaging film adsorbs the free end of the packaging film, when the suction cup 32 pulls the free end of the packaging film downward, since the pulling direction of the suction cup 32 is opposite to the winding direction of the packaging film, the free end of the packaging film will generate a force away from the suction cup 32, so that a gap is generated between the packaging film and the suction cup 32, so that the suction cup 32 and the packaging film are desorbed, affecting the adsorption and driving of the suction cup 32 on the packaging film.

[0047] Therefore, a pressing component 5 for pressing the free end of the packaging film against the suction cup 32 is further provided on one of the automatic film-pulling mechanisms 3 whose pulling direction is opposite to the winding direction of the packaging film. As shown in FIG2 , the automatic film-pulling mechanism 3 on the left is opposite to the winding direction of the packaging film, and the free film-pulling mechanism on the right is opposite to the winding direction of the packaging film, so the pressing component 5 is provided on the automatic film-pulling mechanism 3 on the right.

[0048] Reference Figure 3 and Figure 4 The pressing assembly 5 is mounted on the telescopic assembly 33 and moves with the suction cup 32. The pressing assembly 5 includes a mounting plate 51 rotatably connected to the side of each rotating plate 3431 facing the first cylinder 331, a pressing roller 52 rotatably connected between the two mounting plates 51, a force spring 54 for driving the mounting plate 51 to rotate relative to the rotating plate 3431, and a transmission member 53 disposed between the piston rod of the first cylinder 331 and the mounting plate 51 for limiting whether the mounting plate 51 can rotate relative to the rotating plate 3431 based on the extension and contraction of the telescopic rod of the first cylinder 331. When the mounting plate 51 rotates on the rotating plate 3431, the mounting plate 51 can drive the pressing roller 52 to rotate from one side of the suction cup 32 to the other side of the suction cup 32, so that the free end of the pressing packaging film is always in contact with the suction cup 32.

[0049] The mounting plate 51 comprises a third plate 511 and a fourth plate 512 vertically fixed to one end of the third plate 511. A pressing roller 52 is rotatably connected to the end of the third plate 511 away from the fourth plate 512. The junction between the third and fourth plates 511, 512, is connected to the rotating plate 3431. A sliding rod 55 is fixed between the two fourth plates 512. The sliding rod 55 is located at the end of the fourth plate 512 away from the third plate 511. The sliding rod 55 is connected to the transmission member 53 and is restricted by the transmission member 53. A force spring 54 is fixed between the rotating plate 3431 and the third plate 511. Under normal conditions, the force spring 54 constantly applies a rotational force to the mounting plate 51 toward the suction cup 32, while the transmission member 53 restricts the rotation of the mounting plate 51. When the first cylinder 331 drives the suction cup 32 to extend, the transmission member 53 releases the restriction on the mounting plate 51 , so that the mounting plate 51 can control the pressing roller 52 to rotate to the other side of the suction cup 32 under the drive of the force spring 54 .

[0050] Specifically, the transmission member 53 includes a first plate 531 fixed to the piston rod of the first cylinder 331 and a second plate 532 hinged to the end of the first plate 531 away from the first cylinder 331. A chute 533 is provided on the second plate 532 for the slide bar 55 to be inserted and slide. The chute 533 is provided along the length of the second plate 532. Under normal conditions, the pressing roller 52 is located on the lower side of the suction cup 32, and the slide bar 55 abuts against one end of the chute 533. The movement of the slide bar 55 is restricted by the chute 533 to limit the rotation of the mounting plate 51. When the first cylinder 331 drives the suction cup 32 to extend, the first cylinder 331 also drives the transmission member 53 to move, causing the end of the chute 533 to move. At this time, the chute 533 releases the restriction on the slide bar 55, allowing the mounting plate 51 to drive the pressing roller 52 to rotate to the other side of the suction cup 32 under the action of the force spring 54. Then, when the suction cup 32 absorbs the free end of the packaging film, the pressing roller 52 also abuts against the inner side of the packaging film. When the suction cup 32 drives the free end of the packaging film to rotate, the pressing roller 52 also abuts against the packaging film from the inner side and against the suction cup 32, thereby fixing the position of the free end of the packaging film on the suction cup 32. As the first cylinder 331 resets, the end of the slide groove 533 also drives the slide bar 55 to move in the opposite direction, driving the mounting plate 51 to rotate in the opposite direction, thereby driving the pressing roller 52 to also drive the packaging film from the inner side to the other side of the pressing roller 52, making the pressing of the packaging film more secure.

[0051] Reference Figure 2 and Figure 5 The gluing mechanism 4 is located between the two mounting rollers 2 , so as to perform gluing operation on the free end of the packaging film pulled to the set position by the two automatic film pulling mechanisms 3 .

[0052] Specifically, the gluing mechanism 4 includes a crossbeam 41, a sliding plate 42, a mounting platform 43, a first mounting portion 44, a second mounting portion 45, a cutting assembly 46, and a pressing assembly 47. The crossbeam 41 is longitudinally slidably connected to the support plate 1, and a guide rail 411 is fixedly connected to the straight plate 1 to guide the crossbeam 41, ensuring that gluing operations can be performed at different positions. The sliding plate 42 is laterally slidably connected to the crossbeam 41, and a vertically arranged gluing cylinder 421 is fixedly connected to the sliding plate 42. The mounting platform 43 is fixedly connected to the piston rod of the gluing cylinder 421. The gluing cylinder 421 drives the mounting platform 43 to move vertically, thereby driving the pressing assembly 47 to move up and down, thereby driving the double-sided tape toward the packaging film to adhere the double-sided tape to the packaging film. The first mounting portion 44 and the second mounting portion 45 are rotatably connected to the mounting platform 43. The first mounting portion 44 is used to hold the double-sided tape, while the second mounting portion 45 is used to hold the laminated paper layer after the double-sided tape layer is applied to the packaging film. A cutting assembly 46, located between the first mounting portion 44 and the pressing assembly 47, is used to cut the double-sided tape layer into a predetermined length. The pressing assembly 47 presses the double-sided tape against the packaging film, securing the adhesive layer. The laminated paper layer is then wound around the second mounting portion 45.

[0053] A longitudinal cylinder 48 is also fixed to the support plate 1. The piston rod of the longitudinal cylinder 48 is fixed to the crossbeam 41 to drive the crossbeam 41 to slide longitudinally along the guide rail 411. A transverse cylinder 49 is located between the support plate 1 and the sliding plate 42, driving the sliding plate 42 to slide along the length of the crossbeam 41. The transverse cylinder 49 is fixed to the support plate 1, and the piston rod of the transverse motor is fixed to the sliding plate 42.

[0054] During use, the double-sided tape is directly mounted on the first mounting portion 44, and the free end of the double-sided tape is passed under the pressing assembly 47 and then wrapped around the second mounting portion 45. The cutting assembly 46 cuts the adhesive layer of the double-sided tape into multiple sections, while the pressing assembly 47 presses the double-sided tape against the packaging film, causing the adhesive layer of the double-sided tape to adhere to the packaging film. The coated paper layer, after the adhesive layer is removed, is then wrapped around the second mounting portion 45.

[0055] Reference Figure 5 and Figure 6The first mounting portion 44 includes a first mounting shaft 441 rotatably connected to the mounting platform 43, a first limiting piece 442 fixedly connected to the first mounting shaft 441, a second limiting piece 443 detachably connected to the first mounting shaft 441, and a fixing member 444 for fixing the second limiting piece 443 on the first mounting shaft 441. A placement space 445 for placing double-sided tape is formed between the first limiting piece 442 and the second limiting piece 443 on the first mounting shaft 441. When in use, the double-sided tape is directly placed on the first mounting shaft 441, and then the second limiting piece 443 is placed on the first mounting shaft 441 to fix the double-sided tape on the first mounting shaft 441. Finally, the fixing member 444 is fixed to the first mounting shaft 441 to fix the double-sided tape on the first mounting shaft 441.

[0056] Specifically, the fixing member 444 includes a fixing nut 4441 threadedly connected to the first mounting shaft 441 and a fixing pin 4442 threadedly connected to the side wall of the fixing nut 4441. Furthermore, a fixing groove 4411 is formed on the first mounting shaft 441 for the fixing pin 4442 to be inserted into. During use, the fixing nut 4441 is directly screwed onto the first mounting shaft 441, and then the fixing pin 4442 is screwed onto the side wall of the fixing nut 4441 until the fixing pin 4442 is inserted into the fixing groove 4411. This secures the fixing nut 4441 in place on the first mounting shaft 441, completing the positioning of the double-sided tape.

[0057] The cutting assembly 46 is located on the underside of the first mounting portion 44 and includes a cutting plate 461 fixedly connected to the mounting platform 43 and a placement plate 462 fixed perpendicularly to one side of the cutting plate 461. A cutting blade 463 is slidably connected to the placement plate 462, along with a cutting cylinder 464 fixedly connected to drive the cutting blade 463 toward the placement plate 462. A guide roller 465 is also rotatably connected to the cutting plate 461. During use, the free end of the double-sided tape attached to the first mounting shaft 441 passes through the guide roller 465 and reaches the cutting plate 461, where it is positioned between the cutting plate 461 and the cutting blade 463. When the double-sided tape is positioned between the cutting plate 461 and the cutting blade 463, the adhesive layer of the double-sided tape faces the cutting blade 463. Then, the cutting knife 463 is driven by the cutting cylinder 464 to approach the cutting plate 461, so that the cutting knife 463 cuts the adhesive layer of the double-sided tape. As the double-sided tape moves, the cutting cylinder 464 expands and contracts at intervals, thereby driving the cutting knife 463 to cut the adhesive layer of the double-sided tape into sections according to the set length.

[0058] The cutting cylinder 464 can be a rodless cylinder, making the structure more compact and occupying less space. A plurality of mounting holes for the cutting cylinder 464 are provided on the placement plate 462, so that the distance between the cutting blade 463 and the cutting plate 461 can be adjusted. When the cutting cylinder 464 is installed in the mounting hole at the appropriate position, when the cutting cylinder 464 drives the cutting blade 463 toward the cutting plate 461, the cutting blade 463 can just cut the adhesive layer of the double-sided tape without cutting the coated paper layer of the double-sided tape.

[0059] Reference Figure 7 The placement plate 462 is provided with an escape groove 466 for the double-sided tape to pass through. The free end of the double-sided tape passes through the escape groove 466 and reaches the pressing assembly 47, passing under the pressing assembly 47 with the adhesive layer of the double-sided tape facing away from the pressing assembly 47 and the coated paper layer of the double-sided tape facing the pressing assembly 47. When the automatic film pulling mechanism 3 pulls the free end of the packaging film to the set position, the pressing assembly 47 is positioned directly above the guide roller 35, so that the double-sided tape that has passed under the pressing assembly 47 is located between the guide roller 35 and the pressing assembly 47. When the pressing assembly 47 is pressed, it presses the double-sided tape against the packaging film on the guide roller 35. At this time, the coated paper layer is pulled away, removing the coated paper layer and leaving the adhesive layer on the packaging film.

[0060] Reference Figure 6 and Figure 7 The pressing assembly 47 includes a pressing plate 471 fixed to the side of the cutting plate 461 away from the placing plate 462 and a pressing roller 472 rotatably connected to the lower side of the pressing plate 471. When the automatic film pulling mechanism 3 pulls the free end of the packaging film to the set position, the glue cylinder 421 drives the mounting table 43 to slide down, thereby driving the double-sided tape wrapped around the pressing roller 472 to abut against the packaging film on the guide roller 35.

[0061] Among them, the second mounting portion 45 is located on the upper side of the pressing component 47 and on the side of the pressing component 47 away from the cutting plate 461, so that the coated paper layer of the double-sided tape bypassing the lower side of the pressing component 47 will be wrapped around the second mounting portion 45.

[0062] Reference Figure 6 and Figure 7The second mounting portion 45 includes a second mounting shaft 451 rotatably connected to the mounting platform 43, a fixing clip 452 detachably connected to the second mounting shaft 451, and a gluing motor 453 for rotating the second mounting shaft 451. A semicircular slot 454 is defined on the sidewall of the second mounting shaft 451, connecting to the side of the second mounting shaft 451 away from the mounting platform 43. The fixing clip 452 is generally U-shaped and has a circular cross-section. During use, the double-sided tape film attached to the first mounting portion 44 is simply wrapped around the second mounting shaft 451. The fixing clip 452 is then inserted into the slot 454, securing the film between the fixing clip 452 and the slot 454, thereby securing the film on the second mounting shaft 451. At this time, the second installation shaft 451 is driven to rotate by the gluing motor 453 , thereby driving the laminated paper layer to be wound around the second installation shaft 451 and driving the double-sided tape to be released from the first installation shaft 441 .

[0063] In order to prevent the cutter 463 from not completely cutting the double-sided tape layer, causing the tape layer to not adhere to the packaging film and thus being wound around the second mounting shaft 451 along with the laminated paper layer, thereby hindering the removal of the laminated paper layer from the second mounting shaft 451, a glue removal component 6 for the wound adhesive layer and a detection component 7 for detecting whether the laminated paper layer carries an adhesive layer are provided between the pressing component 47 and the second mounting portion 45.

[0064] Reference Figure 8 The detection assembly 7 includes a detection shaft 71 fixed to the mounting platform 43 and a detection roller 72 rotatably connected to the detection shaft 71. There is resistance between the detection roller 72 and the detection shaft 71. A detection plate 73 is fixed to the end of the detection roller 72 facing the mounting platform 43. A detection port 74 is formed on the outer side of the detection plate 73. A proximity switch 75 is fixed to the mounting platform 43. When the detection roller 72 rotates, the proximity switches 75 are aligned with the detection port 74. The laminated paper layer that passes around the bottom side of the pressing assembly 47 will be wrapped around the detection roller 72. When the adhesive layer on the laminated paper layer successfully adheres to the packaging film, the laminated paper layer will slide over the detection roller 72. Due to the resistance between the detection roller 72 and the detection shaft 71, the laminated paper layer will not cause the detection roller 72 to rotate. When the adhesive layer on the laminated paper layer is not adhered to the packaging film, the laminated paper layer drives the adhesive layer to reach the detection roller 72, and the adhesive layer will directly abut the detection roller 72. Due to the stickiness of the adhesive layer, as the laminated paper layer moves, the adhesive layer will drive the detection roller 72 to rotate, and the detection roller 72 also drives the detection plate 73 to rotate. At this time, the proximity switch 75 turns from facing the detection port 74 to facing the detection plate 73, causing the data detected by the proximity switch 75 to change. The change in the data detected by the proximity switch 75 can be used to determine whether the adhesive layer is normally adhered to the guarantee film.

[0065] Reference Figure 6 and Figure 8 The adhesive removal assembly 6 comprises a driving roller 61 rotatably connected to the mounting platform 43, a generally U-shaped mounting frame 62 hingedly connected to the mounting platform 43, a rubber roller 63 rotatably connected within the mounting frame 62, and a fixed adjustment member 64 for fixing the mounting frame 62. A glue removal space 65 is formed between the rubber roller 63 and the driving roller 61, into which the laminated paper layer is inserted. During use, the mounting frame 62 can be adjusted and fixed simply by using the fixed adjustment member 64. After being fixed, the laminated paper layer, which has been bypassed by the adjustment roller, is passed through the glue removal space 65. When the driving roller 61 is rotated, it moves the laminated paper layer, and the glue layer carried by the laminated paper layer adheres to the rubber roller 63, thereby removing the glue layer carried by the laminated paper layer.

[0066] The fixed adjustment member 64 includes a fixed block 641 fixedly connected to the mounting platform 43 and an adjustment bolt 642 threadedly connected to the mounting frame 62. The adjustment bolt 642 is located at the end of the mounting frame 62 away from the rubber roller 63. One end of the adjustment bolt 642 is fixedly connected to a handle, and the other end is ball-jointed to the fixed block 641. During use, the position of the mounting frame 62 can be fixed by adjusting the adjustment bolt 642. By rotating and adjusting the adjustment bolt 642, the position of the mounting frame 62 can be adjusted, thereby adjusting the size of the glue application space. The ball-jointed arrangement of the adjustment bolt 642 and the fixed block 641 ensures that when the adjustment bolt 642 drives the mounting frame 62 to rotate about the hinge axis with the mounting platform 43, the end of the adjustment bolt 642 can rotate relative to the fixed block 641 to change the angle between the adjustment bolt 642 and the fixed block 641, thereby adapting to the rotation of the mounting frame 62 without causing it to become stuck.

[0067] Reference Figure 6 and Figure 8 The gluing motor 453 is fixed to the mounting platform 43, and the output shaft of the gluing motor 453, the second mounting shaft 451 and the driving roller 61 are connected by a belt on the other side of the mounting platform 43, so that the gluing motor 453 can drive the second mounting shaft 451 to rotate, and can also drive the driving roller 61 to rotate, so as to ensure that the coated paper layer of the double-sided tape can be smoothly wound on the second mounting shaft 451.

[0068] During use, in the initial state, both automatic film-pulling mechanisms 3 are in their initial positions. At this point, the guide rollers 35 on the two automatic film-pulling mechanisms 3 do not contact each other and are spaced sufficiently apart. When the remaining amount of packaging film on the installation roller 2 is less than a first set value, the corresponding automatic film-pulling mechanism 3 pulls the free end of the other packaging film to a set position. At this set position, the height of the guide roller 35 is lower than the height of the guide roller 35 at the initial position. The packaging film that has reached the set position can then be glued by the gluing mechanism 4, and the packaging film enters a waiting state after gluing is completed. When the remaining amount of packaging film on the installation roller 2 is less than a second set value, the other automatic film-pulling mechanism 3 also rotates to the set position. At this point, the two guide rollers 35 abut against each other, squeezing and adhering the two packaging films together, so that the tail end of the old packaging film and the free end of the new packaging film are adhered together by the double-sided tape applied by the gluing mechanism 4.

[0069] It is understood that the gluing mechanism 4 can also be a device for spraying glue on the packaging film, so that the glue can be automatically sprayed on the free end of the packaging film through the gluing mechanism 4. The specific installation and use can be determined according to actual conditions. This application uses the example of a device for automatically adhering double-sided tape to the packaging film as an example for description.

[0070] Therefore, refer to Figure 2 , a first detection member (not shown in the figure) for detecting that the remaining amount of the packaging film reaches a first set value and a second detection member 8 for detecting that the remaining amount of the packaging film reaches a second set value are also provided on the support plate 1. Two groups of the first detection member and the second detection member 8 are respectively provided corresponding to the two mounting rollers 2. When the first detection member detects that the remaining amount of the packaging film on the mounting roller 2 reaches the first set value, the automatic film pulling mechanism 3 starts to drive the free end of the packaging film to the set position, so that the gluing mechanism 4 glues the free end of the packaging film and enters a waiting state; when the second detection member 8 detects that the remaining amount of the packaging film on the mounting roller 2 reaches the second set value, the other automatic film pulling mechanism 3 starts to rotate from the initial position to the set position, thereby squeezing the two packaging films together through the two guide rollers 35 to complete the automatic film conjugation work. After the film conjugation is completed, the two automatic film pulling mechanisms 3 can be reset again.

[0071] Among them, Figure 2 For example, the position of the automatic film-pulling mechanism 3 on the right is the initial position; the position of the automatic film-pulling mechanism 3 on the left is the set position.

[0072] It is understandable that, since the position of the packaging film conjunctiva is that the two packaging films are adhered together, a mechanism for cutting and removing the adhered packaging films is provided in the subsequent workstation. This is the prior art and will not be described in detail in this application.

[0073] The first detection component includes a distance measuring sensor fixed on the mounting platform 43. The distance measuring sensor can detect the distance between itself and the packaging film. When there is a lot of packaging film, the data detected by the distance measuring sensor is small. As the packaging film is pulled out, the data detected by the distance measuring sensor gradually increases. When the data detected by the distance measuring sensor reaches the set value, it means that the remaining amount of packaging film reaches the first set value. At this time, the other automatic film pulling mechanism 3 is controlled to pull the free end of the other packaging film to the set position, and the double-sided tape is applied to the free end of the other packaging film through the gluing mechanism 4, and then the machine can wait for the next operation.

[0074] Reference Figure 2 The second detection member 8 includes a second infrared transmitter 81 fixedly connected to the mounting platform 43 and a second infrared receiver 82 fixedly connected to the mounting platform 43. The second infrared transmitter 81 and the second infrared receiver 82 are respectively located on either side of the mounting roller 2. When the packaging film roll is not placed on the mounting roller 2, the second infrared receiver 82 can receive the signal transmitted by the second infrared transmitter 81. When the packaging film roll is installed on the mounting roller 2, the packaging film blocks the signal transmitted from the second infrared transmitter 81 to the second infrared receiver 82. As the packaging film is pulled out, when the remaining amount of packaging film reaches a second set value, the second infrared receiver 82 again receives the signal from the second infrared transmitter 81. At this time, the automatic film pulling mechanism 3 corresponding to the packaging film is controlled to move from the initial position to the set position, thereby clamping the tail end of the old packaging film and the free end of the new packaging film together, so that the two packaging films are adhered together by double-sided tape, achieving automatic film conjugation.

[0075] It is understandable that after the automatic film conjugation operation of the packaging film is completed, the old packaging film roll can be removed by a robot or an automatic loading device and replaced with a new packaging film, realizing unmanned operation throughout the process.

[0076] The automatic film splicing device of the present application embodiment operates on the principle that its components work together to achieve efficient and automated film replacement, ensuring continuous operation of the packaging machine. This eliminates the problem of machine downtime during film replacement, improves packaging efficiency, and meets practical needs. Furthermore, the device's rational design reduces downtime and manual labor required for film replacement, significantly improving production efficiency. Furthermore, the coordinated operation of its components enhances the overall machine's operational stability and reliability.

[0077] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatic film splicing device, characterized in that: include: Support plate (1); Mounting rollers (2), two of which are arranged at intervals and are used to place packaging film rollers; The automatic film-pulling mechanism (3) is provided in two groups, each group of the automatic film-pulling mechanism (3) corresponds to each of the mounting rollers (2), and is used to pull the free end of the packaging film mounted on the mounting roller (2) to a set position; The gluing mechanism (4) is arranged between the two installation rollers (2) and is used for gluing the free end of the packaging film pulled to a set position by the automatic film pulling mechanism (3).

2. The automatic film splicing device according to claim 1, characterized in that: The automatic film-pulling mechanism (3) comprises a mounting frame (31) rotatably connected to the support plate (1), a suction cup (32) mounted on the mounting frame (31) for adsorbing the packaging film, a telescopic component (33) for driving the suction cup (32) to telescope, and a rotating component (34) for driving the suction cup (32) to rotate.

3. The automatic film splicing device according to claim 2, characterized in that: The support (343) is rotatably connected to a guide roller (35), and the guide roller (35) can abut and guide the packaging film adsorbed by the suction cup (32).

4. The automatic film splicing device according to claim 2, characterized in that: The mounting frame (31) comprises two mounting rods (311) fixedly connected to the support plate (1), and a support plate (312) fixedly connected between the two mounting rods (311) and located at one end of the mounting rods (311) away from the support plate (1); the rotating assembly (34) comprises a rotating rod (341) rotatably connected between the support plate (1) and the support plate (312), a rotating motor (342) fixedly connected to the support plate (1) for driving the rotating rod (341) to rotate, and a bracket (343) fixedly connected to the mounting rod (311), and the suction cup (32) is mounted on the bracket (343).

5. The automatic film splicing device according to claim 4, characterized in that: The telescopic assembly (33) comprises a first cylinder (331) fixedly connected to the bracket (343), and the suction cup (32) is fixedly connected to the piston rod of the first cylinder (331).

6. The automatic film splicing device according to any one of claims 4 to 5, characterized in that: The telescopic component (33) is provided with a pressing component (5) which rotates from one side of the suction cup (32) to the other side of the suction cup (32) as the suction cup (32) is extended or retracted, and the pressing component (5) can press the packaging film against the suction cup (32).

7. The automatic film splicing device according to claim 6, characterized in that: The pressing component (5) comprises a mounting plate (51) rotatably connected to the bracket (343), a pressing roller (52) rotatably connected to one end of the mounting plate (51), a force spring (54) fixed between the bracket (343) and the mounting plate (51) for driving the mounting plate (51) to rotate, and a transmission member (53) arranged between the telescopic end of the telescopic component (33) and the mounting plate (51) for limiting the mounting plate (51) to rotate only with the telescopic movement of the telescopic component (33). When the mounting plate (51) rotates on the mounting frame (31), it can drive the pressing roller (52) to rotate from one side of the suction cup (32) to the other side of the suction cup (32).

8. The automatic film splicing device according to claim 7, characterized in that: The transmission member (53) includes a first plate (531) fixedly connected to the telescopic end of the telescopic assembly (33), and a second plate (532) fixedly connected to the first plate (531); a slide groove (533) is provided on the second plate (532) along its length direction; a slide rod (55) is fixedly connected to the mounting plate (51) and is slidably matched with the slide groove (533); the slide rod (55) abuts against one end of the slide groove (533) under the elastic force of the force spring (54) to limit the movement of the slide rod (55) through the slide groove (533).

9. The automatic film splicing device according to claim 1, characterized in that: The gluing mechanism (4) comprises a crossbeam (41) longitudinally slidably connected to the mounting plate (51), a mounting plate (42) transversely slidably connected to the crossbeam (41), a gluing cylinder (421) fixedly connected to the mounting plate (42), a mounting platform (43) fixedly connected to the piston rod of the gluing cylinder (421), a first mounting portion (44) rotatably connected to the mounting platform (43) for placing a double-sided adhesive tape, a second mounting portion (45) rotatably connected to the mounting platform (43) for wrapping a coated paper layer of the double-sided adhesive tape, a cutting assembly (46) for cutting off the adhesive layer of the double-sided adhesive tape, and a pressing assembly (47) for pressing the double-sided adhesive tape to adhere to a packaging film.

10. The automatic film splicing device according to claim 9, characterized in that: The cutting assembly (46) is located between the first mounting portion (44) and the pressing assembly (47), and includes a cutting plate (461) fixedly connected to the mounting platform (43) and a placement plate (462) vertically fixedly connected to one side of the cutting plate (461); a cutting knife (463) and a cutting cylinder (464) for driving the cutting knife (463) to slide in the direction of the placement plate (462) are slidably connected to the placement plate (462); and an avoidance groove (466) for the double-sided tape to pass through is provided on the placement plate (462).

Images