A film material replacement system, a bale press, and a film material replacement method

Abstract

The application discloses a film material replacing system, a strip packaging machine and a film material replacing method, and relates to the technical field of packaging machines. The film material replacing system comprises a film roll mounting assembly, a film replacing platform, a film suction assembly, a film cutting assembly, a tape supply part and a tape pressing part. The film roll mounting assembly has two film roll mounting positions for mounting a working film roll and a standby film roll respectively. The film suction assembly sends new film material of the standby film roll to the film replacing platform, so that the new film material and old film material of the working film roll correspond to the same cutting position. The film cutting assembly cuts the new film material and the old film material transversely, aligns the end portions of the new film material and the old film material, and connects and presses the aligned end portions by the tape supply part and the tape pressing part. The application can reduce the readjustment of the end portions of the film material after cutting, manual tape sticking and pressing operation, improve the connection efficiency and stability of the new film material and the old film material, and reduce the influence of film roll replacement on the continuous production of the strip packaging machine.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery technology, and in particular to a film replacement system, a strip packaging machine, and a film replacement method. Background Technology

[0002] Strip packaging machines are a type of packaging equipment used for material sorting and packaging. They typically use continuously conveyed film to form packaging bags, and complete the packaging operation with feeding, sealing and cutting mechanisms. They are widely used in strip bag packaging of food, pharmaceuticals and other products.

[0003] During the operation of the strip packaging machine, the film material is usually set in the form of film rolls at the film supply position of the equipment. As the packaging operation continues, the film material on the film rolls is gradually consumed. When the film rolls are nearly exhausted, the original film rolls need to be replaced with new film rolls to ensure the supply of film material required for subsequent packaging operations.

[0004] When changing film rolls, existing packaging machines typically require stopping the machine first, then having operators disassemble and reassemble the film rolls and connect the old and new film materials. After the film change is completed, the machine is restarted, causing an interruption in the packaging production process and affecting production continuity and efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a film material replacement system, a strip packaging machine, and a film material replacement method to solve the technical problems of excessive manual operation and long replacement time in the existing strip packaging machine film replacement process, which affect production continuity and efficiency.

[0006] To achieve the above objectives, the present invention provides a membrane material replacement system, comprising a membrane roll mounting assembly, a membrane replacement platform, a membrane suction assembly, a membrane cutting assembly, a tape supply unit, and a tape pressing unit. The membrane roll mounting assembly has two membrane roll mounting positions, one for mounting a working membrane roll and the other for mounting a spare membrane roll. The membrane replacement platform is used to adsorb and fix the old membrane material of the working membrane roll and the new membrane material of the spare membrane roll. The membrane suction assembly is used to adsorb the new membrane material and deliver it to the membrane replacement platform, so that the new membrane material and the old membrane material correspond to the same cutting position. The membrane cutting assembly is used to move laterally along the new and old membrane materials and cut the new and old membrane materials at the cutting position, so that the ends of the cut new membrane material and the ends of the old membrane material are aligned. The tape supply unit is used to supply tape to the joint between the ends of the new and old membrane materials, and the tape pressing unit is used to press the tape onto the new and old membrane materials.

[0007] Preferably, the front side of the membrane changing platform is provided with a suction groove and a cutting groove. The suction groove is connected to a vacuum generator to adsorb and fix the new membrane material and the old membrane material on the membrane changing platform. The cutting groove is used for the blade of the membrane cutting assembly to enter and move laterally along the new membrane material and the old membrane material.

[0008] Preferably, the film suction assembly includes a first guide cylinder, a film suction platform, a suction cup, and a suction cup frame. The suction cup is disposed on the suction cup frame and communicates with a vacuum generator. The first guide cylinder is used to drive the suction cup and the suction cup frame to move so that the suction cup approaches the new film material located on the film suction platform and adsorbs and fixes the new film material.

[0009] Preferably, the film suction assembly further includes a slide rail, a lead screw, and a motor. The motor drives the lead screw to move the suction cup and the suction cup holder along the slide rail and deliver the new film material to the film changing platform.

[0010] Preferably, the film cutting assembly includes a blade, a blade mounting plate, a first cylinder, a second cylinder, and an electric cylinder. The blade is disposed on the blade mounting plate. The second cylinder is used to adjust the position of the blade relative to the film changing platform according to the film roll mounting position corresponding to the film material to be cut. The first cylinder is used to drive the blade into or out of the cutting groove. The electric cylinder is provided with a first slider that can move laterally along the new film material and the old film material. The first slider is used to drive the blade, the blade mounting plate, the first cylinder, and the second cylinder to move laterally along the new film material and the old film material, so that the blade moves laterally along the cutting groove and cuts the new film material and the old film material. When the blade is in a non-cutting state, the first cylinder drives the blade out of the cutting groove, and the second cylinder drives the blade to move outside the vertical movement path of the film suction assembly.

[0011] Preferably, the tape supply unit includes a tape fixing shaft and a tape mounting frame, the tape fixing shaft is disposed on the tape mounting frame, and the tape is disposed on the tape fixing shaft. The tape pressing unit includes a pressure roller and a pressure roller mounting frame, the pressure roller is disposed on the pressure roller mounting frame. The electric cylinder is also provided with a second slider and a third slider. The tape supply unit is connected to the second slider, and the tape pressing unit is connected to the third slider. The first slider, the second slider, and the third slider move synchronously along the lateral direction of the new film material and the old film material, so that the film cutting assembly, the tape supply unit, and the tape pressing unit sequentially complete the film material cutting, tape unfolding, and tape pressing during the lateral movement.

[0012] Preferably, the membrane material replacement system further includes a tape cutting assembly, which includes tape cutting blades respectively disposed on the lateral sides of the new membrane material and the old membrane material, and a tape cutting cylinder for driving the tape cutting blades to move. The tape cutting blades are used to cut off the excess tape located on the lateral sides of the new membrane material and the old membrane material after the tape pressing part has completed tape pressing.

[0013] Accordingly, the present invention also provides a strip packaging machine, which includes the film material replacement system described in any of the above claims.

[0014] Accordingly, the technical solution of the present invention also provides a membrane material replacement method, the membrane material replacement method comprising: adsorbing and fixing the old membrane material of the working membrane roll onto the membrane replacement platform; adsorbing the new membrane material of the spare membrane roll through the membrane suction assembly and sending the new membrane material to the membrane replacement platform, so that the new membrane material and the old membrane material correspond to the same cutting position; causing the blade of the film cutting assembly to enter the blade groove of the membrane replacement platform, and causing the film cutting assembly, the tape supply part and the tape pressing part to move synchronously along the transverse direction of the new membrane material and the old membrane material; and cutting the new membrane material and the old membrane material at the cutting position by the blade. Align the ends of the new film material and the old film material formed by the cutting process; after the film cutting assembly completes the cutting, the blade is removed from the cutting groove and positioned outside the vertical movement path of the film suction assembly; during the lateral movement, the tape is supplied to the junction of the ends of the new film material and the old film material through the tape supply unit, and the tape is pressed together with the new film material and the old film material through the tape pressing unit; after the tape is pressed together, the excess portions at both ends of the tape are removed by the tape cutting blades respectively provided on the lateral sides of the new film material and the old film material.

[0015] Preferably, before replacing the membrane material, the diameter of the working membrane roll is detected by a laser ranging detection switch, the installation position of the spare membrane roll is determined by the detection switch, and the adjusting cylinder in the adjusting guide assembly is extended or retracted according to the installation position of the spare membrane roll to adjust the position of the adjusting guide roller and guide the new membrane material of the spare membrane roll.

[0016] Compared with the above-mentioned background technology, the membrane material replacement system provided by the present invention has the following beneficial effects: By setting two membrane roll mounting positions, the present invention enables the spare membrane roll to be pre-installed and prepared with new membrane material when the working membrane roll is supplying membrane material, thus providing conditions for continuous membrane replacement between the working membrane roll and the spare membrane roll; the old membrane material and the new membrane material are adsorbed and fixed by the membrane replacement platform, and the new membrane material of the spare membrane roll is sent to the membrane replacement platform by the membrane suction component, so that the new membrane material and the old membrane material correspond to the same cutting position, thereby limiting the positional changes of the new and old membrane materials during the cutting process, and making the end of the new membrane material formed by cutting directly aligned with the end of the old membrane material, reducing the need for manual adjustment and alignment of the new and old membrane materials after cutting, and improving the consistency of the docking position of the new and old membrane materials. Simultaneously, the tape supply unit and tape pressing unit connect and press the cut and aligned ends of the new and old film materials with tape, reducing the impact of manual tape application and pressing operations on the film replacement quality, improving the efficiency and stability of the connection process between the new and old film materials, and reducing the impact of film roll replacement on the continuous production process of the strip packaging machine. The strip packaging machine provided by this invention, by employing the above-mentioned film material replacement system and its film material replacement method, by using film replacement steps corresponding to the above-mentioned film material replacement system, can also achieve the above-mentioned technical effects. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the membrane replacement system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the mating structure of the tape cutting assembly and the film changing platform provided in an embodiment of the present invention; Figure 3 This is a schematic diagram showing the relative positions of the various working components at the membrane replacement platform provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the film suction assembly structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the film cutting assembly structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the tape supply section structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the tape pressing part structure provided in an embodiment of the present invention; Figure 8This is a schematic diagram of the adjustment guide component structure provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 100-Membrane roll mounting assembly; 110-Membrane roll mounting position; 120-Membrane roll fixing frame; 130-Membrane roll support frame; 140-Guide roller; 150-Working membrane roll; 160-Spare membrane roll; 200-Membrane changing platform; 210-Suction groove; 220-Knife groove; 230-Second guide cylinder; 300-Suction assembly; 310-First guide cylinder; 320-Cylinder connecting plate; 330-Suction platform; 340-Suction cup; 350 - Suction cup holder; 360- Slide rail; 370- Lead screw; 380- Cylinder mounting bracket; 390- Lead screw connecting shaft; 391- Bearing seat; 392- Motor mounting bracket; 393- Motor; 400- Film cutting assembly; 410- Blade; 420- Blade mounting plate; 430- First cylinder; 440- First cylinder connecting plate; 450- Second cylinder; 460- Second cylinder connecting plate; 470- Electric cylinder; 471- First slider; 472- Second slider; 47 3-Third slider; 480-Electric cylinder mounting bracket; 500-Tape supply section; 510-Tape fixing shaft; 520-Tape mounting bracket; 530-Cylinder mounting plate; 540-Glue supply cylinder; 550-Tape; 600-Tape pressing section; 610-Pressure roller; 620-Pressure roller mounting bracket; 630-First pressing cylinder; 640-First pressing cylinder connecting plate; 650-Second pressing cylinder; 660-Second pressing cylinder connecting plate; 700-Tape cutting assembly Components; 710-Tape cutting blade; 720-Tape cutting blade mounting plate; 730-Blade fixing plate; 740-Cutting cylinder; 750-Tape cutting cylinder fixing plate; 800-Adjusting guide assembly; 810-Cylinder fixing plate; 820-Adjusting cylinder; 830-Connecting shaft; 840-Ling bearing; 850-Adjusting guide roller; 860-Mounting plate; 870-Detection switch; 880-Laser rangefinder detection switch; A-New membrane material; B-Old membrane material. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 and Figure 3As shown, in this embodiment, the present invention provides a membrane material replacement system, including a membrane roll mounting assembly 100, a membrane replacement platform 200, a membrane suction assembly 300, a membrane cutting assembly 400, a tape supply unit 500, and a tape pressing unit 600; the membrane roll mounting assembly 100 has two membrane roll mounting positions 110, one for mounting a working membrane roll 150 and the other for mounting a spare membrane roll 160; the membrane replacement platform 200 is used to adsorb and fix the old membrane material B of the working membrane roll 150 and the new membrane material A of the spare membrane roll 160; the membrane suction assembly 300 is used to adsorb the new membrane material A and deliver the new membrane material A to the membrane replacement platform 200. The membrane platform 200 aligns the new membrane material A and the old membrane material B at the same cutting position. The film cutting assembly 400 moves laterally along the membrane material and cuts the new membrane material A and the old membrane material B at the cutting position, so that the ends of the cut new membrane material A and the ends of the old membrane material B are aligned. Further, in this embodiment, the film cutting assembly 400, the tape supply unit 500, and the tape pressing unit 600 are arranged sequentially along the lateral movement direction and move synchronously along the lateral movement of the membrane material, so that during the lateral movement, the membrane material is cut sequentially, tape 550 is supplied to the joint between the ends of the new membrane material A and the ends of the old membrane material B, and the tape 550 is pressed onto the new membrane material A and the old membrane material B. Specifically, the two membrane roll mounting positions 110 respectively form the working membrane roll 150 position and the spare membrane roll 160 position. The membrane roll mounting assembly 100 also includes a membrane roll fixing frame 120, a membrane roll support frame 130, and a guide roller 140. The membrane roll fixing frame 120 and the membrane roll support frame 130 are used to install and support the corresponding membrane rolls, and the guide roller 140 is used to guide the membrane material drawn from the membrane roll. When the working membrane roll 150 is feeding film, the operator installs a new membrane roll in advance at the spare membrane roll 160 position and guides the new membrane material A to the suction assembly 300 for preparation. When it is necessary to change the membrane, the membrane changing platform 200 adsorbs and fixes the old membrane material B, and the suction assembly 300 adsorbs the new membrane material A and sends the new membrane material A to the membrane changing platform 200, so that the new membrane material A and the part to be cut of the old membrane material B correspond to the same cutting position. New membrane material A and old membrane material B remain under control at the membrane replacement platform 200. The membrane cutting assembly 400 passes the cutting position laterally along the membrane material to form corresponding ends of new membrane material A and old membrane material B. The tape supply unit 500 and tape pressing unit 600 are located after the membrane cutting assembly 400 in the lateral movement direction and move laterally synchronously with the membrane cutting assembly 400, so that membrane material cutting, tape 550 unfolding and tape 550 pressing are completed sequentially in the same lateral working stroke. After one membrane roll is replaced, the original spare membrane roll 160 can continue to supply membrane as a new working membrane roll 150, and the other membrane roll mounting position 110 is used to install a new spare membrane roll 160 before the next membrane replacement.By setting two membrane roll mounting positions 110, when the working membrane roll 150 supplies membrane material, the spare membrane roll 160 can be pre-installed and prepared with new membrane material A, providing conditions for continuous membrane replacement between the working membrane roll 150 and the spare membrane roll 160. The old membrane material B and the new membrane material A are adsorbed and fixed by the membrane replacement platform 200, and the new membrane material A of the spare membrane roll 160 is sent to the membrane replacement platform 200 by the membrane suction assembly 300, so that the new membrane material A and the old membrane material B correspond to the same cutting position, and the end of the new membrane material A overlaps with the end of the old membrane material B, so as to limit the positional change of the new membrane material A and the old membrane material B during the cutting process, and make the end of the new membrane material A formed by cutting directly aligned with the end of the old membrane material B. This reduces the need for manual adjustment and alignment of the new membrane material A and the old membrane material B after cutting, which helps to improve the consistency of the docking position of the new membrane material A and the old membrane material B. Simultaneously, the film cutting assembly 400, the tape supply unit 500, and the tape pressing unit 600 are arranged sequentially along the transverse movement direction and move synchronously along the transverse direction of the film material. This allows the film material cutting, tape 550 supply, and tape 550 pressing to be completed sequentially with the transverse movement. This transforms the originally dispersed cutting, butt bonding, and pressing operations into a continuous film changing process, reducing the impact of manual traction, alignment, adhesive application, and pressing operations on the film changing quality. It also improves the efficiency and stability of the connection process between the new film material A and the old film material B, and reduces the impact of film roll replacement on the continuous production process of the strip packaging machine.

[0023] The working principle of this invention is as follows: the working film roll 150 continuously supplies film material during the production process of the strip packaging machine, the spare film roll 160 is pre-installed in another film roll mounting position 110 and the new film material A is prepared at the film suction assembly 300; when it is detected that the working film roll 150 is about to be exhausted and enters the film replacement process, the film replacement platform 200 adsorbs the old film material B, and the film suction assembly 300 sends the new film material A to the film replacement platform 200 and makes the new film material A correspond to the same cutting position as the old film material B. The membrane cutting assembly 400, tape supply unit 500, and tape pressing unit 600 move synchronously along the transverse direction of the membrane material. The membrane cutting assembly 400 first cuts the membrane material and aligns the end of the new membrane material A with the end of the old membrane material B. Then, the tape supply unit 500 unfolds the tape 550, and the tape pressing unit 600 presses the tape 550 together at the joint of the new membrane material A and the old membrane material B. After the tape 550 is pressed, the tape cutting assembly 700 cuts off the excess tape 550 on both sides of the membrane material, the membrane changing platform 200 releases its adsorption, and the connected membrane material continues to be transported. After one membrane change is completed, the original spare membrane roll 160 is converted into a working membrane roll 150, and another membrane roll mounting position 110 is used to prepare for the next spare membrane roll 160.

[0024] like Figure 2 and Figure 3As shown, in some embodiments of the present invention, the front side of the film changing platform 200 is provided with a film suction groove 210 and a cutting groove 220. The film suction groove 210 is connected to a vacuum generator to adsorb and fix the film material on the film changing platform 200. The cutting groove 220 is used for the blade 410 of the film cutting assembly 400 to enter and move laterally along the film material. Specifically, the front side of the film changing platform 200 serves as the bearing and working surface for the new film material A and the old film material B. The film suction groove 210 is provided on the front side and is connected to a vacuum generator (not shown in the figure) located on the back side of the film changing platform 200. When the vacuum generator is working, it forms an adsorption effect at the film suction groove 210, keeping the film material on the front side of the film changing platform 200 fixed. The cutting groove 220 is provided on the front side of the film changing platform 200 and forms a movement space for the blade 410 along the lateral side of the film material. The blade 410 of the film cutting assembly 400 enters the cutting groove 220 during cutting and moves laterally along the cutting groove 220. The suction groove 210 constrains the position of the membrane material, and the cutting groove 220 provides movement space for the blade 410 to perform lateral cutting. Together, they allow the membrane material to be cut while remaining fixed, which helps reduce end position deviations caused by membrane material movement during the cutting process. Additionally, the membrane changing platform 200 is connected to a second guide cylinder 230 for adjusting its position. The second guide cylinder 230 selects its action based on the membrane roll mounting position 110 where the membrane roll to be replaced is located, thereby adjusting the position of the membrane changing platform 200 relative to the membrane material.

[0025] like Figure 4 As shown, in this embodiment, the film suction assembly 300 includes a first guide cylinder 310, a film suction platform 330, a suction cup 340, and a suction cup holder 350. The suction cup 340 is disposed on the suction cup holder 350 and communicates with a vacuum generator. The first guide cylinder 310 is used to drive the suction cup 340 and the suction cup holder 350 to move, so that the suction cup 340 approaches the new film material A located at the film suction platform 330 and adsorbs and fixes the new film material A. Specifically, the operator pulls the new film material A from the spare film roll 160 to the film suction platform 330. The suction cup 340 is disposed on the suction cup holder 350. The first guide cylinder 310 drives the suction cup holder 350 and the suction cup 340 to move toward the new film material A at the film suction platform 330, so that the suction cup 340 contacts or approaches the surface of the new film material A. The suction cup 340 is communicated with a vacuum generator and adsorbs and fixes the new film material A under vacuum. The film suction assembly 300 is also equipped with a cylinder connecting plate 320 and a cylinder fixing bracket 380. The cylinder connecting plate 320 is used for the installation connection between the first guide cylinder 310 and the adjacent structure, and the cylinder fixing bracket 380 is used to support the first guide cylinder 310. The new membrane material A is fixed by suction, so that the new membrane material A remains under control during the subsequent transportation to the membrane changing platform 200, reducing the need for manual continuous clamping or pulling of the new membrane material A.

[0026] like Figure 4As shown, in some embodiments of the present invention, the film suction assembly 300 further includes a slide rail 360, a lead screw 370, and a motor 393. The motor 393 drives the lead screw 370 to move the suction cup 340 and the suction cup holder 350 along the slide rail 360, and delivers the new film material A to the film changing platform 200. Specifically, after the suction cup 340 adsorbs the new film material A, the motor 393 drives the lead screw 370 to rotate, causing the suction cup 340 and the suction cup holder 350 to move along the slide rail 360 toward the film changing platform 200 under the action of the lead screw 370, thereby delivering the new film material A, which is still in an adsorbed state, from the position of the film suction platform 330 to the position of the film changing platform 200. The film suction assembly 300 is also provided with a lead screw connecting shaft 390, a bearing seat 391, and a motor mounting bracket 392. The lead screw connecting shaft 390, the bearing seat 391, and the motor mounting bracket 392 are used to cooperate to complete the installation and support of the lead screw 370 and the motor 393. The slide rail 360 constrains the movement direction of the suction cup 340 and the suction cup holder 350, and the lead screw 370 converts the rotational motion of the motor 393 into linear conveying motion along the slide rail 360, so that the new membrane material A can enter the membrane changing platform 200 according to the set path, providing a conveying basis for the corresponding cutting positions of the new membrane material A and the old membrane material B.

[0027] like Figure 5As shown, it should be noted that the film cutting assembly 400 includes a blade 410, a blade mounting plate 420, a first cylinder 430, a second cylinder 450, and an electric cylinder 470. The blade 410 is mounted on the blade mounting plate 420. The second cylinder 450 is used to adjust the position of the blade 410 relative to the film changing platform 200 according to the film roll mounting position 110 corresponding to the film material to be cut. The first cylinder 430 is used to drive the blade 410 into or out of the blade groove 220. The electric cylinder 470 is equipped with a mechanism that can move along the film... A first slider 471, used for lateral movement of the film material, drives the blade 410, blade mounting plate 420, first cylinder 430, and second cylinder 450 to move laterally along the film material, so that the blade 410 moves laterally along the cutting groove 220 and cuts the film material. When the blade 410 is not in the cutting state, the first cylinder 430 drives the blade 410 out of the cutting groove 220, and the second cylinder 450 drives the blade 410 to move outside the vertical movement path of the film suction assembly 300. Specifically, the blade 410 is mounted on the blade mounting plate 420, which is connected to the first cylinder 430. The first cylinder 430 is connected to the second cylinder 450 through a first cylinder connecting plate 440, and the second cylinder 450 is connected to the first slider 471 through a second cylinder connecting plate 460. The electric cylinder 470 is mounted on the electric cylinder fixing frame 480. After the membrane changing platform 200 completes membrane adsorption, the first slider 471 first moves the blade 410 to the lateral side of the membrane. The second cylinder 450 adjusts the relative position between the blade 410 and the membrane changing platform 200 according to the membrane roll mounting position 110 corresponding to the membrane material to be cut. The first cylinder 430 then pushes the blade 410 into the cutting groove 220. The first slider 471 then moves laterally along the membrane, causing the blade 410 to move from one side of the membrane to the other side along the cutting groove 220 and complete the cutting. After cutting, the first cylinder 430 moves the blade 410 out of the cutting groove 220, and the second cylinder 450 moves the first cylinder 430 and the blade 410 outside the vertical movement path of the suction assembly 300, so that the blade 410 enters a non-cutting state, avoiding interference between the suction cup 340 and the suction cup holder 350 and the blade 410 when they move up and down. Meanwhile, the second cylinder 450 is used to adapt to the changes in the working positions corresponding to the two membrane roll mounting positions 110, so that the same membrane cutting assembly 400 can complete the cutting in coordination with different membrane roll positions.

[0028] like Figure 3 , Figure 6 and Figure 7As shown, in this embodiment, the tape supply unit 500 includes a tape fixing shaft 510 and a tape mounting bracket 520, and the tape 550 is disposed on the tape fixing shaft 510. The tape pressing unit 600 includes a pressure roller 610 and a pressure roller mounting bracket 620. The electric cylinder 470 is also provided with a second slider 472 and a third slider 473. The tape supply unit 500 is connected to the second slider 472, and the tape pressing unit 600 is connected to the third slider 473. The first slider 471, the second slider 472, and the third slider 473 move synchronously along the transverse direction of the film material so that the film cutting assembly 400, the tape supply unit 500, and the tape pressing unit 600 sequentially complete the film material cutting, tape 550 unfolding, and tape 550 pressing during the transverse movement. Specifically, the tape 550 roll is mounted on the tape fixing shaft 510, which is located on the tape mounting bracket 520. The tape supply unit 500 is also equipped with a cylinder mounting plate 530 and a glue supply cylinder 540. The glue supply cylinder 540 is used to adjust the position of the tape mounting bracket 520 relative to the film changing platform 200 according to the location of the film roll being replaced. Before the film changing operation begins, the end of the tape 550 is pre-adhered to the front side of the transverse side of the film changing platform 200. During the transverse movement of the second slider 472, the tape mounting bracket 520 drives the tape 550 to unfold from one side of the film changing platform 200 to the other side, and the unfolded tape 550 remains in contact with the film surface. The pressure roller 610 is mounted on the pressure roller mounting bracket 620. The tape pressing part 600 is also provided with a first pressing cylinder 630, a first pressing cylinder connecting plate 640, a second pressing cylinder 650, and a second pressing cylinder connecting plate 660. The second pressing cylinder 650 adjusts the position of the pressure roller 610 relative to the film changing platform 200 according to the location of the film roll being replaced. The first pressing cylinder 630 causes the pressure roller 610 to move toward the film changing platform 200 and press against the outside of the tape 550. When the first slider 471, the second slider 472, and the third slider 473 move laterally synchronously, the film cutting assembly 400, the tape supply unit 500, and the tape pressing unit 600 are arranged sequentially along the lateral movement direction. The film cutting assembly 400 first passes through the corresponding film material position to complete the cutting. Then, the tape supply unit 500 unfolds the tape 550 to the joint between the end of the new film material A and the end of the old film material B. The pressure roller 610 then passes through the corresponding position and rolls the tape 550, so that the tape 550 is tightly attached to the outer surface of the new film material A and the old film material B. The film cutting assembly 400, the tape supply unit 500, and the tape pressing unit 600 share the same electric cylinder 470, and synchronous lateral movement is achieved through different sliders on the electric cylinder 470, reducing the process connection time caused by the reciprocating action of multiple independent lateral drive mechanisms.

[0029] like Figure 2As shown, in some embodiments of the present invention, the membrane material replacement system further includes a tape cutting assembly 700. The tape cutting assembly 700 includes tape cutting blades 710 respectively disposed on both sides of the membrane material and cylinders for driving the tape cutting blades 710 to move. The tape cutting blades 710 are used to cut off excess tape 550 located on both sides of the membrane material after the tape 550 is pressed in the tape pressing section 600. Specifically, the two tape cutting blades 710 are respectively located on both sides of the membrane material in the transverse direction and are kept in a position that does not affect the membrane material operation during normal film supply and tape 550 unfolding and pressing. The tape cutting assembly 700 is also provided with a tape cutting blade mounting plate 720, a blade fixing plate 730, a tape cutting cylinder 740 and a tape cutting cylinder fixing plate 750. The tape cutting cylinder 740 is mounted on the tape cutting cylinder fixing plate 750 and is used to drive the tape cutting blades 710 to move. The tape cutting blades 710 are held on both sides of the membrane material by corresponding mounting structures. After the tape pressing section 600 completes the pressing of the tape 550, the tape cutting cylinder 740 drives the corresponding tape cutting blade 710 to cut off the excess tape 550 extending from both sides of the membrane material. After cutting, the operator removes the cut-off excess tape 550. By cutting off the excess tape 550 from both sides of the membrane material, the edges of the joined tape 550 are made to match the edges of the membrane material, reducing the impact of the excess tape 550 on the subsequent membrane material conveying.

[0030] like Figure 1 As shown, in this embodiment, the present invention also provides a strip packaging machine, which includes the film material replacement system of any of the above-mentioned embodiments. Specifically, the film material replacement system is set on the film supply side of the strip packaging machine. The film material provided by the working film roll 150 enters the subsequent packaging station of the strip packaging machine after being guided accordingly. The spare film roll 160 is pre-installed and the new film material A is prepared during the film supply of the working film roll 150. When the working film roll 150 is nearly exhausted, the cutting of the new film material A and the old film material B, the supply of adhesive tape 550, the pressing, and the removal of excess adhesive tape 550 are completed according to the above-mentioned action relationship of the film material replacement system, so that the connected film material continues to be transported to the subsequent station of the strip packaging machine. By adopting the above-mentioned film material replacement system, the strip packaging machine can reduce the production time occupied by film roll disassembly and assembly, film material alignment, adhesive application, and pressing after manual machine stoppage, and reduce the impact of film roll replacement on the continuous production process of the strip packaging machine.

[0031] like Figure 1 and Figure 3As shown, in this embodiment, the present invention also provides a membrane material replacement method, implemented based on the membrane material replacement system in the above embodiment, including the following steps: The old membrane material B of the working membrane roll 150 is adsorbed and fixed on the membrane replacement platform 200; the new membrane material A of the spare membrane roll 160 is adsorbed by the membrane suction assembly 300 and sent to the membrane replacement platform 200, so that the new membrane material A corresponds to the same cutting position as the old membrane material B; the blade 410 of the film cutting assembly 400 enters the cutting groove 220 of the membrane replacement platform 200, and the film cutting assembly 400, the tape supply unit 500, and the tape pressing unit 600 move synchronously along the transverse direction of the membrane material, and the blade 410 cuts the membrane material at the same cutting position. The new membrane material A and the old membrane material B are cut at the cutting position, so that the ends of the new membrane material A and the ends of the old membrane material B are aligned. After the film cutting assembly 400 completes the cutting, the blade 410 is removed from the cutting groove 220 and located outside the vertical movement path of the suction assembly 300. During the lateral movement, the tape 550 is supplied to the joint between the ends of the new membrane material A and the old membrane material B by the tape supply part 500, and the tape 550 is pressed onto the new membrane material A and the old membrane material B by the tape pressing part 600. After the tape 550 is pressed, the excess part at both ends of the tape 550 is removed by the tape cutting blades 710 respectively set on both sides of the membrane material. Specifically, before membrane replacement, a new membrane roll is installed at the installation position 110 of the spare membrane roll 160, and the new membrane material A is pulled to the suction assembly 300 and fixed by the suction cup 340. During membrane replacement, the membrane replacement platform 200 absorbs the old membrane material B, and the suction assembly 300 sends the new membrane material A to the membrane replacement platform 200, so that the parts to be cut of the new membrane material A and the old membrane material B correspond to the same cutting position. After the blade 410 of the film cutting assembly 400 enters the cutting groove 220, the film cutting assembly 400, the tape supply unit 500 and the tape pressing unit 600 move laterally along the membrane material. The blade 410 first cuts the new membrane material A and the old membrane material B along the cutting position, so that the end of the new membrane material A and the end of the old membrane material B are directly aligned. After the cutting is completed, the first cylinder 430 drives the blade 410 to exit the cutting groove 220, and the second cylinder 450 drives the blade 410 to move outside the vertical movement path of the suction assembly 300. As the lateral movement continues, the tape supply unit 500 unfolds the tape 550, with its pre-fixed ends, to the joint between the end of the new membrane material A and the end of the old membrane material B. The tape pressing unit 600 then presses the tape 550 firmly onto the outer surfaces of the new membrane material A and the old membrane material B. After the tape 550 is pressed, the tape cutting blades 710 located on both sides of the membrane material remove the excess portion from both ends of the tape 550. The membrane changing platform 200 releases its grip on the connected membrane material, allowing it to continue into the subsequent conveying path. These steps sequentially connect the conveying of the new membrane material A, membrane material fixing, cutting, tape 550 unfolding, pressing, and excess material removal, reducing the need for manual cutting, alignment, adhesive application, and pressing operations.

[0032] like Figure 1 and Figure 8As shown, in some embodiments of the present invention, before replacing the membrane material, the diameter of the working membrane roll 150 is detected by a laser ranging detection switch 880, and the membrane roll mounting position 110 of the spare membrane roll 160 is determined by a detection switch 870. Based on the membrane roll mounting position 110 of the spare membrane roll 160, the adjusting cylinder 820 in the adjusting guide assembly 800 is controlled to extend or retract, thereby adjusting the position of the adjusting guide roller 850 and guiding the new membrane material A of the spare membrane roll 160. Specifically, the laser ranging detection switch 880 is set in the detection area corresponding to the membrane roll position, and determines the remaining state of the working membrane roll 150 by detecting changes in the outer diameter of the working membrane roll 150; the detection switch 870 is used to determine which of the two membrane roll mounting positions 110 the spare membrane roll 160 is located at. The adjusting guide assembly 800 includes a cylinder fixing plate 810, an adjusting cylinder 820, a connecting shaft 830, a spherical bearing 840, an adjusting guide roller 850, and a mounting plate 860. The adjusting cylinder 820 extends or retracts according to the detected position of the spare membrane roll 160, and drives the adjusting guide roller 850 to change position via the connecting shaft 830 and the spherical bearing 840, so that new membrane material A led out from different membrane roll mounting positions 110 can be guided to the membrane replacement area according to the corresponding path. By detecting the membrane roll diameter to determine the membrane replacement timing, and adjusting the adjusting guide roller 850 according to the position of the spare membrane roll 160, the membrane replacement action can be matched with the remaining state of the membrane roll and the position of the new membrane material A.

[0033] In summary, by using two membrane roll mounting positions 110 in conjunction with membrane suction, cutting, adhesive supply, pressing, and adhesive cutting components, the new membrane material A and the old membrane material B are aligned and connected, reducing manual membrane pulling, alignment, and adhesive application operations, improving membrane replacement efficiency and connection stability, and minimizing the impact of membrane replacement on the continuous production of the strip packaging machine. The strip packaging machine and membrane material replacement method provided by this invention also possess the above-mentioned technical effects.

[0034] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A membrane material replacement system, characterized in that, It includes a membrane roll mounting assembly (100), a membrane changing platform (200), a membrane suction assembly (300), a membrane cutting assembly (400), a tape supply unit (500), and a tape pressing unit (600). The membrane roll mounting assembly (100) has two membrane roll mounting positions (110), one of which is used to mount a working membrane roll (150) and the other of which is used to mount a spare membrane roll (160). The membrane changing platform (200) is used to adsorb and fix the old membrane material (B) of the working membrane roll (150) and the new membrane material (A) of the spare membrane roll (160). The membrane suction assembly (300) is used to adsorb the new membrane material (A) and send the new membrane material (A) to the membrane changing platform (200) so that the new membrane material (A) and the old membrane material (B) correspond to the same cutting position. The film cutting assembly (400) is used to move laterally along the new film material (A) and the old film material (B) and to cut the new film material (A) and the old film material (B) at the cutting position so that the ends of the new film material (A) and the old film material (B) formed by the cutting are aligned; The tape supply section (500) is used to supply tape (550) to the joint between the end of the new membrane material (A) and the end of the old membrane material (B), and the tape pressing section (600) is used to press the tape (550) onto the new membrane material (A) and the old membrane material (B).

2. The membrane material replacement system according to claim 1, characterized in that, The front of the membrane changing platform (200) is provided with a membrane suction groove (210) and a blade groove (220). The membrane suction groove (210) is connected to a vacuum generator to adsorb and fix the new membrane material (A) and the old membrane material (B) onto the membrane changing platform (200). The blade groove (220) is used for the blade (410) of the membrane cutting assembly (400) to enter and move laterally along the new membrane material (A) and the old membrane material (B).

3. The membrane material replacement system according to claim 1, characterized in that, The film suction assembly (300) includes a first guide cylinder (310), a film suction platform (330), a suction cup (340), and a suction cup holder (350). The suction cup (340) is disposed on the suction cup holder (350) and communicates with a vacuum generator. The first guide cylinder (310) is used to drive the suction cup (340) and the suction cup holder (350) to move so that the suction cup (340) approaches the new film material (A) located on the film suction platform (330) and adsorbs and fixes the new film material (A).

4. The membrane material replacement system according to claim 3, characterized in that, The film suction assembly (300) also includes a slide rail (360), a lead screw (370) and a motor (393). The motor (393) is used to drive the lead screw (370) to move the suction cup (340) and the suction cup holder (350) along the slide rail (360) and deliver the new film material (A) to the film changing platform (200).

5. The membrane material replacement system according to claim 2, characterized in that, The film cutting assembly (400) includes a blade (410), a blade mounting plate (420), a first cylinder (430), a second cylinder (450), and an electric cylinder (470). The blade (410) is mounted on the blade mounting plate (420). The second cylinder (450) is used to adjust the position of the blade (410) relative to the film changing platform (200) according to the film roll mounting position (110) corresponding to the film material to be cut. The first cylinder (430) is used to drive the blade (410) into or out of the blade groove (220). The electric cylinder (470) is provided with a first slider (471) capable of moving laterally along the new film material (A) and the old film material (B). The first slider (471) is used to drive the blade (410), the blade mounting plate (420), the first cylinder (430) and the second cylinder (450) to move laterally along the new film material (A) and the old film material (B), so that the blade (410) moves laterally along the cutting groove (220) and cuts the new film material (A) and the old film material (B); when the blade (410) is in a non-cutting state, the first cylinder (430) drives the blade (410) to exit the cutting groove (220), and the second cylinder (450) drives the blade (410) to move outside the vertical movement path of the suction assembly (300).

6. The membrane material replacement system according to claim 5, characterized in that, The tape supply unit (500) includes a tape fixing shaft (510) and a tape mounting bracket (520), the tape fixing shaft (510) being disposed on the tape mounting bracket (520), and the tape (550) being disposed on the tape fixing shaft (510). The tape pressing unit (600) includes a pressure roller (610) and a pressure roller mounting bracket (620), the pressure roller (610) being disposed on the pressure roller mounting bracket (620). The electric cylinder (470) is also provided with a second slider (472) and a third slider (473). The first slider (471), the second slider (472), and the third slider (473) are connected to the second slider (472). The first slider (471), the second slider (472), and the third slider (473) move laterally along the new film material (A) and the old film material (B) in sync, so that the film cutting assembly (400), the tape supply part (500), and the tape pressing part (600) sequentially complete the film cutting, tape (550) unfolding, and tape (550) pressing during the lateral movement.

7. The membrane material replacement system according to claim 1, characterized in that, It also includes a tape cutting assembly (700), which includes tape cutting blades (710) respectively disposed on the lateral sides of the new film material (A) and the old film material (B) and a tape cutting cylinder (740) for driving the tape cutting blades (710) to move. The tape cutting blades (710) are used to cut off the excess tape (550) located on the lateral sides of the new film material (A) and the old film material (B) after the tape (550) is pressed in the tape pressing part (600).

8. A strip packaging machine, characterized in that, Includes the membrane replacement system according to any one of claims 1 to 7.

9. A method for replacing membrane material, characterized in that, include: The old membrane material (B) of the working membrane roll (150) is adsorbed and fixed on the membrane changing platform (200). The new membrane material (A) of the spare membrane roll (160) is adsorbed by the membrane suction assembly (300) and the new membrane material (A) is sent to the membrane changing platform (200) so that the new membrane material (A) and the old membrane material (B) correspond to the same cutting position. The blade (410) of the film cutting assembly (400) is inserted into the blade groove (220) of the film changing platform (200), and the film cutting assembly (400), the tape supply unit (500) and the tape pressing unit (600) move synchronously along the lateral direction of the new film material (A) and the old film material (B). The blade (410) cuts the new film material (A) and the old film material (B) at the cutting position, so that the ends of the new film material (A) and the old film material (B) formed by the cutting are aligned. After the film cutting assembly (400) completes the cutting, the blade (410) is removed from the blade groove (220) and located outside the vertical movement path of the film suction assembly (300); during the lateral movement, the tape (550) is supplied to the joint between the end of the new film material (A) and the end of the old film material (B) by the tape supply part (500), and the tape (550) is pressed onto the new film material (A) and the old film material (B) by the tape pressing part (600). After the tape (550) is pressed, the excess portions at both ends of the tape (550) are removed by tape cutting blades (710) respectively located on the lateral sides of the new film material (A) and the old film material (B).

10. The membrane material replacement method according to claim 9, characterized in that, Before replacing the membrane material, the diameter of the working membrane roll (150) is detected by a laser ranging detection switch (880), the membrane roll mounting position (110) of the spare membrane roll (160) is determined by a detection switch (870), and the adjusting cylinder (820) in the adjusting guide assembly (800) is extended or retracted according to the membrane roll mounting position (110) of the spare membrane roll (160) to adjust the position of the adjusting guide roller (850) and guide the new membrane material (A) of the spare membrane roll (160).

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