A bag making and packaging machine

Abstract

The application discloses a bag making and packaging machine, and relates to the technical field of packaging mechanical equipment, wherein a main box body is provided with a feeding port at its upper end for connecting with a feeding device; a film feeding assembly is arranged for providing film raw materials; a film pulling assembly is arranged for pulling the film raw materials to a set distance; a first edge sealing assembly is arranged at the starting section of the film pulling assembly for sealing the short edges of the film raw materials and cutting bag breaking holes at the edge of the sealing to obtain bag bodies; a bag opening assembly is arranged on the film pulling path of the film pulling assembly for opening the bag bodies; a bag stretching assembly is movably arranged between the bag opening assembly and the feeding port, and a feeding hopper with an adjustable discharging port is arranged on the bag stretching assembly; a second edge sealing assembly is arranged for sealing the bag bodies after loading; and a discharging conveying assembly is arranged below the bag stretching assembly and the second edge sealing assembly for conveying the bag bodies to the second edge sealing assembly for sealing and then discharging.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery and equipment technology, and in particular to a bag-making and packaging machine. Background Technology

[0002] In automated packaging operations, pre-made bags or on-site bag fabrication and filling are often required. Existing packaging equipment is often single-function, with many production lines consisting of independent bag-making machines, bag-opening and bag-filling machines connected in series. Complex robotic arms or conveyor mechanisms are needed to transfer bags between these machines. This layout not only occupies a large area but, more importantly, is prone to bag positioning deviations, dropping, or jamming at process connection points. Furthermore, the hopper diameter of traditional equipment is usually fixed. When changing bag specifications, it often requires stopping the machine and manually replacing the corresponding hopper components, or even adjusting the entire bag-filling mechanism. This adjustment is time-consuming and labor-intensive, failing to meet the flexible production needs of small-batch, multi-specification products and limiting the equipment's application range. These problems lead to poor production line stability, increased downtime, and difficulty in achieving truly smooth integrated operations. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a bag making and packaging machine that can reliably and efficiently achieve fully automatic packaging operations with high success rate, high adaptability and stable operation within a compact spatial layout.

[0004] To address the aforementioned technical problems, this invention provides a bag-making and packaging machine, comprising: a main body with an inlet at its upper end for connecting to a feeding device; a film-exiting assembly for providing folded film material; a film-pulling assembly including a translation unit, a clamping unit, and a first lifting unit, wherein the translation unit, the first lifting unit, and the clamping unit are connected sequentially, and the clamping unit is driven by the translation unit to pull the film material out to a set distance; a first sealing assembly disposed at the starting section of the film-pulling assembly for sealing the short side of the film material and cutting a bag-breaking hole at the sealed edge to obtain a bag body; and a bag-opening assembly disposed on the film-pulling path of the film-pulling assembly, wherein the bag-opening assembly includes an opening... The system comprises a bag unit and a second lifting unit, the second lifting unit being connected to the bag opening unit for opening the bag body; a bag opening assembly movably disposed between the bag opening assembly and the feed inlet, the bag opening assembly having an adjustable feed hopper; the clamping unit being driven to rise synchronously with the bag opening unit via the first and second lifting units, so that the bag body is connected to the feed hopper; a second sealing assembly disposed on the side of the bag opening assembly away from the film stretching assembly, for sealing the bag body after it has been filled; and a feeding conveyor assembly disposed below the bag opening assembly and the second sealing assembly, for conveying the bag body to the second sealing assembly for sealing and then outputting it.

[0005] As an improvement to the above solution, the translation unit includes: a first linear slide table, arranged along a first direction; a first mounting plate, connected to a first sliding block of the first linear slide table; a first slide rail arranged along the first direction on the first mounting plate; the film stretching assembly further includes: a first support, slidably connected to the first slide rail, the first support being connected to a first drive cylinder for driving it to move along the first slide rail; the first lifting unit is vertically fixed to the first support, and the power output end of the first lifting unit is connected to a clamping platform; the clamping unit includes at least one first clamping cylinder, the first clamping cylinder being fixed to the clamping platform.

[0006] As an improvement to the above solution, the first edge sealing assembly includes: a second support, the central part of which has an opening for the film material to pass through, and two parallel second mounting plates on both sides of the opening; a second drive cylinder, fixed to one of the second mounting plates, the power output end of the second drive cylinder being connected to at least two first hot press seats, and a hot press adhesive strip being embedded in the first hot press seat; a third drive cylinder, fixed to the other second mounting plate, the power output end of the third drive cylinder being connected to at least two second hot press seats, the second hot press seats being embedded with a first heating wire, and the first heating wire being wrapped with high-temperature resistant tape; and at least one fourth drive cylinder, arranged parallel to the third drive cylinder, the power output end of the fourth drive cylinder being connected to a cutter disposed between the second hot press seats.

[0007] As an improvement to the above solution, the bag opening assembly further includes: a third mounting plate, on which the second lifting unit is vertically mounted, and the power output end of the second lifting unit is connected to the lifting plate; two mounting brackets, facing each other on the lifting plate, the bag opening unit including at least one vacuum suction cup and a sixth drive cylinder for driving the vacuum suction cup on each mounting bracket; two pressing units, facing each other on the two mounting brackets, each pressing unit including a seventh drive cylinder and a pressing rubber strip connected to the power output end of the seventh drive cylinder; and a bag opening detector, mounted on the vacuum suction cup, for detecting whether the bag opening is successful.

[0008] As an improvement to the above solution, the bag opening assembly includes: at least two sets of first drive screws, arranged parallel to each other along a second direction on the upper part of the main housing, and synchronously driven by a first drive motor; a fourth mounting plate is fixed on the transmission slider of each set of first drive screws; a second linear slide is connected to the fourth mounting plate, and at least two second sliding blocks are provided on the second linear slide; a first mounting seat is fixed on the second sliding block; two sets of guide plates are respectively fixed to the two fourth mounting plates and located on the side of the second linear slide closer to the bag opening assembly; the guide plates are connected by two horizontal guide posts; two bag opening plates are respectively sleeved on the guide posts; at least one of the bag opening plates The system is connected to the first mounting base; a bellows cover is fitted onto the guide post and located between the two bag-holding plates; one side of the bellows cover is connected to one of the bag-holding plates, and the other side of the bellows cover is connected to the other bag-holding plate, forming a feeding hopper between the bellows cover and the two bag-holding plates; a second linear slide is used to drive the second sliding block to move, thereby adjusting the width of the feeding hopper; a second clamping cylinder is fixed to the lower end of the first mounting base and is used to clamp and fix the bag after it is fitted onto the feeding hopper; a first membrane-free induction alarm is provided on the clamping part of the second clamping cylinder; a first photoelectric sensor is set on the transmission path of the first drive screw.

[0009] As an improvement to the above solution, the second edge sealing assembly includes: a fifth mounting plate, both ends of which are respectively connected to two of the fourth mounting plates, and a third hot press base is fixed to one side of the fifth mounting plate, with a second heating wire embedded in the third hot press base; a sixth mounting plate, both ends of which are respectively connected to two of the fourth mounting plates, with a pressing space between the sixth mounting plate and the fifth mounting plate; a plurality of third slide rails, fixed to the sixth mounting plate along the second direction, with a driving block slidably connected to each of the third slide rails; a fourth hot press base, connected to the side of each driving block near the third hot press base, with a hot press adhesive strip embedded in the fourth hot press base; and a driving unit for driving all the driving blocks to slide synchronously along the third slide rails.

[0010] As an improvement to the above solution, the driving unit includes: a driving plate with an array of oblique holes, and each driving block having a driving post at its upper end that mates with the oblique holes; a nut seat fixed to the driving plate; and a second driving motor whose power output end is connected to the nut seat via a lead screw, for driving the driving plate to move, and then driving all the driving blocks to slide synchronously through the engagement of the oblique holes and the driving posts.

[0011] As an improvement to the above solution, the film outlet assembly is located on the outside of the main housing. The film outlet assembly includes: an air shaft for fixing the film raw material roll; at least two sets of film feeding rollers for guiding the film raw material; and a perforator disposed between each of the film feeding rollers.

[0012] As an improvement to the above solution, the material feeding and conveying assembly includes: a material feeding platform, disposed below the second edge sealing assembly; and a conveying unit, used to convey the bag after feeding to the second edge sealing assembly for edge sealing, and then to the material feeding platform.

[0013] As an improvement to the above solution, the packaging machine also includes an electrical control box, which is located outside the main body. The electrical control box is connected to the film dispensing assembly, film pulling assembly, first sealing assembly, bag opening assembly, bag stretching assembly, second sealing assembly and material feeding and conveying assembly for signal control of the circuit and motion coordination of each assembly.

[0014] The beneficial effects of implementing this invention are as follows:

[0015] This invention discloses a bag-making and packaging machine that integrates bag making, bag opening, bag fitting, bag filling, sealing, and material conveying functions into a single main body. Through synchronized upward bag fitting actions, it achieves continuous automated operation throughout the entire process from film raw materials to finished packaged products. By featuring an adjustable feeding hopper, it can accommodate bags of different sizes without the need for hopper changes. This equipment offers precise and efficient bag fitting, strong adaptability to bag sizes, significantly improved packaging efficiency and stability, high reliability, and a high success rate, demonstrating significant practical value and commercial potential. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a bag making and packaging machine and a feeding device in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the main structure of a bag-making and packaging machine according to an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of a bag-making and packaging machine in an embodiment of this application, omitting the main box body;

[0019] Figure 4 This is one of the partial structural schematic diagrams of a bag-making and packaging machine according to an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the structure of a film-pulling assembly of a bag-making and packaging machine according to an embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the structure of the first sealing component of a bag making and packaging machine according to an embodiment of this application;

[0022] Figure 7 This is a schematic diagram of the structure of the bag opening component of a bag making and packaging machine according to an embodiment of this application;

[0023] Figure 8 This is a second partial structural schematic diagram of a bag-making and packaging machine according to an embodiment of this application;

[0024] Figure 9 This is a schematic diagram of the structure of a bag-opening assembly of a bag-making and packaging machine according to an embodiment of this application;

[0025] Figure 10 This is a schematic diagram of the structure of the second sealing component of a bag making and packaging machine according to an embodiment of this application;

[0026] Figure 11 This is a schematic diagram of the material feeding and conveying component of a bag making and packaging machine according to an embodiment of this application.

[0027] The reference numerals in the attached drawings are explained as follows: 100, main housing; 110, feed inlet; 120, electrical control box; 200, film outlet assembly; 210, air shaft; 220, film feeding roller; 230, punch; 300, film stretching assembly; 310, first linear slide; 320, first mounting plate; 321, first slide rail; 330, first support; 340, first drive cylinder; 350, first lifting cylinder; 360, clamping platform; 370, first clamping cylinder; 400, first edge sealing assembly; 410, second support; 411, second mounting plate. Plate; 420, Second drive cylinder; 421, First hot press base; 430, Third drive cylinder; 431, Second hot press base; 440, Fourth drive cylinder; 441, Cutter; 500, Bag opening assembly; 510, Third mounting plate; 511, Second slide rail; 512, Fifth drive cylinder; 520, Second lifting cylinder; 521, Lifting plate; 530, Mounting bracket; 541, Vacuum suction cup; 542, Sixth drive cylinder; 543, Bag opening detector; 551, Seventh drive cylinder; 552, Pressing adhesive strip; 600, Bag opening assembly; 61 0. First drive screw; 611. First drive motor; 612. Steering gear; 613. Drive shaft; 620. Fourth mounting plate; 630. Second linear slide; 640. First mounting base; 650. Guide plate; 651. Guide column; 660. Bag opening plate; 670. Bellows protective cover; 680. Second clamping cylinder; 681. First membrane-free sensor alarm; 690. First photoelectric sensor; 700. Second edge sealing assembly; 710. Fifth mounting plate; 711. Third hot press base; 720. Sixth mounting plate; 721. Three slide rails; 722, drive block; 730, fourth hot press base; 741, drive plate; 742, nut seat; 743, second drive motor; 800, unloading conveyor assembly; 810, unloading platform; 820, conveying unit; 821, second drive screw; 822, transmission belt; 823, third support; 824, third sliding platform; 825, second mounting base; 826, third clamping cylinder; 827, second photoelectric sensor; 828, third lifting cylinder; 829, second membrane-free sensor alarm; 900, unloading equipment. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] See Figures 1-4 , Figure 1 This is a schematic diagram of the structure of a bag making and packaging machine and a feeding device in an embodiment of this application; Figure 2 This is a schematic diagram of the main structure of a bag-making and packaging machine according to an embodiment of this application; Figure 3 This is a schematic diagram of a bag-making and packaging machine in an embodiment of this application, omitting the main box body; Figure 4This is a partial structural schematic diagram of a bag-making and packaging machine according to an embodiment of this application. As shown in the figure, the bag-making and packaging machine includes: a main housing 100, with an inlet 110 at its upper end for connecting to a feeding device 900; a film-exiting assembly 200 for providing folded film raw materials; a film-pulling assembly 300 disposed within the main housing 100, the film-pulling assembly 300 including a translation unit, a clamping unit, and a first lifting unit, the translation unit, the first lifting unit, and the clamping unit being connected in sequence, the clamping unit being driven by the translation unit to pull the film raw materials out to a set distance; a first sealing assembly 400 disposed at the starting section of the film-pulling assembly 300, for sealing the short side of the film raw materials and cutting a bag-breaking hole at the sealing edge to obtain a first bag body; and a bag-opening assembly 500 disposed on the film-pulling path of the film-pulling assembly 300, the bag-opening assembly 500 including a bag-opening unit and a second lifting unit. The second lifting unit is connected to the bag opening unit, which is used to open the first bag body formed after sealing on both sides; the bag opening assembly 600 is movably disposed between the bag opening assembly 500 and the feed inlet 110, and the bag opening assembly 600 is provided with a feed hopper with an adjustable discharge port; wherein, when the bag opening assembly 500 opens the first bag body, the film pulling assembly 300 and the bag opening assembly 500 drive the bag body to rise synchronously, so that the bag body fits onto the feed hopper, and then the bag opening assembly 600 transports the feed hopper to below the feed inlet 110 for material discharge, forming the second bag body; the second sealing assembly 700 is disposed on the side of the bag opening assembly 600 away from the film pulling assembly 300, and is used to seal the second bag body; the material feeding and conveying assembly 800 is disposed below the bag opening assembly 600 and the second sealing assembly 700, and is used to convey the second bag body to the second sealing assembly 700 for sealing and then output. Specifically, the film dispensing assembly 200 provides a folded film, the film pulling assembly 300 pulls it to a set length, and the first sealing assembly 400 seals the short sides of the film and cuts the bag opening to form a first bag. The bag opening assembly 500 opens the first bag; subsequently, the film pulling assembly 300 and the bag opening assembly 500 rise synchronously, placing the opened bag onto the feed hopper of the bag opening assembly 600. The bag opening assembly 600 carries the bag and transports the feed hopper laterally to below the feed inlet 110 of the main housing 100, where external equipment feeds material into the bag through the feed hopper, forming a second bag. The unloading conveyor assembly 800 transports the second bag to the second sealing assembly 700 for sealing; the unloading conveyor assembly 800 removes and outputs the sealed finished bag. The five major functional modules of bag making, bag opening, bag putting, bag filling and sealing are integrated into a single main body 100. The internal coordinated bag transfer replaces the complicated handover between multiple machines in the traditional way, fundamentally solving the problem of process dispersion and difficult connection in existing packaging machines, and greatly improving system stability and production cycle.

[0030] Preferably, the bag-making and packaging machine further includes an electrical control box 120, which is located on the upper end of the feeding device 900. The electrical control box 120 is connected to the film-ejecting assembly 200, the film-stretching assembly 300, the first sealing assembly 400, the bag-opening assembly 500, the bag-opening assembly 600, the second sealing assembly 700, and the feeding conveyor assembly, for signal control and motion coordination of each component. By establishing a centralized signal connection and motion coordination between a single electrical control box 120 and all functional components, the traditional decentralized and independent control system between multiple devices is replaced. This ensures precise connection and interlocking of actions at each stage, fundamentally solving the problems of cycle time misalignment and frequent malfunctions caused by decentralized control, and significantly improving the stability and reliability of the entire machine.

[0031] See Figure 4 and Figure 5 , Figure 5 This is a schematic diagram of the structure of a film-pulling assembly 300 of a bag-making and packaging machine according to an embodiment of this application.

[0032] Furthermore, in this embodiment, the translation unit includes: a first linear slide 310, which is arranged along a first direction; a first mounting plate 320, which is connected to a first sliding block of the first linear slide 310; and a first slide rail 321 arranged along the first direction on the first mounting plate 320.

[0033] The film stretching assembly 300 further includes a first support 330 slidably connected to the first slide rail 321. The first support 330 is connected to a first drive cylinder 340 for driving it to move along the first slide rail 321. The first lifting unit is a first lifting cylinder 350, which is vertically fixed to the first support 330. The power output end of the first lifting cylinder 350 is connected to a clamping platform 360. The clamping unit includes at least one first clamping cylinder 370, which is fixed to the clamping platform 360 and used to clamp the film raw material. The first linear slide 310 realizes the main film stretching motion; the first drive cylinder 340 drives the first support 330 to make fine adjustments along the first slide rail 321, achieving two-stage precise compensation for the film stretching distance; the first lifting cylinder 350 drives the clamping mechanism to lift and lower as a whole; and the first clamping cylinder 370 performs clamping and releasing of the film. Ensuring that the length of the film pulled out each time is highly accurate and can be flexibly adjusted lays the foundation for the consistency of subsequent bag sizes and is a prerequisite for ensuring the smooth operation of the entire automated process.

[0034] Preferably, the first linear slide 310 is a linear platform with a combination of servo motor and ball screw transmission; it can receive precise pulse signals for position control, and combined with the non-slip transmission characteristics of the ball screw, it can ensure that the length error of each film pulling is extremely small.

[0035] See Figure 4 and Figure 6 , Figure 6 This is a schematic diagram of the structure of the first sealing component 400 of a bag making and packaging machine according to an embodiment of this application.

[0036] Furthermore, in this embodiment, the first edge-sealing assembly 400 includes: a second support 410, the central part of which has an opening for the film material to pass through, and two parallel second mounting plates 411 on both sides of the opening; a second drive cylinder 420, fixed to one of the second mounting plates 411, the power output end of the second drive cylinder 420 being connected to at least two first hot press seats 421, the first hot press seats 421 being embedded with hot press adhesive strips; a third drive cylinder 430, fixed to another second mounting plate 411, the power output end of the third drive cylinder 430 being connected to at least two second hot press seats 431, the hot press seats being embedded with first heating wires, the first heating wires being wrapped with high-temperature resistant tape; and at least one fourth drive cylinder 440, arranged parallel to the third drive cylinder 430, the power output end of the fourth drive cylinder 440 being connected to a cutter 441 disposed between the two second hot press seats 431. The second drive cylinder 420 and the third drive cylinder 430 are driven synchronously to press the hot-pressing strip on one side against the heating wire wrapped with high-temperature resistant tape on the other side, completing the heat sealing of both sides of the film. At the same time, the fourth drive cylinder 440 drives the cutter 441 to cut a bag-breaking hole at the sealing edge. Heat sealing and punching are completed simultaneously in one station and one action, simplifying the process and shortening the cycle time.

[0037] Preferably, there are two fourth drive cylinders 440, which are respectively located at the upper and lower ends of the third drive cylinder 430, which can improve the stability of cutting.

[0038] See Figure 4 and Figure 7 , Figure 7 This is a schematic diagram of the structure of the bag opening component 500 of a bag making and packaging machine according to an embodiment of this application.

[0039] Furthermore, in this embodiment, the bag opening assembly 500 further includes: a third mounting plate 510, which is slidably disposed within the main housing 100 along a first direction via a second slide rail 511; the third mounting plate 510 is connected to a fifth drive cylinder 512 for driving it to move along the second slide rail 511; the second lifting unit is a second lifting cylinder 520, which is vertically disposed on the third mounting plate 510, and the power output end of the second lifting cylinder 520 is connected to the lifting plate 521; and two mounting brackets. 530, facing each other on the lifting plate 521, the bag opening unit includes at least one vacuum suction cup 541 respectively disposed on each mounting bracket 530 and a sixth drive cylinder 542 for driving the vacuum suction cup 541; at least two pressing units, facing each other on the two mounting brackets 530, each pressing unit includes a seventh drive cylinder 551 and a pressing strip 552 connected to the power output end of the seventh drive cylinder 551; a bag opening detector 543, disposed on the vacuum suction cup 541, is used to detect whether the bag opening is successful. The fifth drive cylinder 512 drives the entire assembly to slide along the film stretching direction to adapt to different film stretching lengths at the bag opening position. The pressing strip 552 of the pressing unit presses down on the edge of the bag body, and the vacuum suction cup 541 adsorbs the inner wall of the bag. The sixth drive cylinder 542 drives the vacuum suction cup 541 to move to both sides, pulling open the bag opening. The second lifting cylinder 520 drives the entire bag opening mechanism to rise and fall, participating in the synchronous upward bagging action. The bag opening method, achieved by clamping and pressing the film-pulling assembly 300 together and then pulling it open via side wall adsorption, effectively handles soft film bags, preventing slippage or deformation during the opening process and ensuring stability and a high success rate. The entire assembly can slide along the first direction, facilitating position calibration with the film-pulling assembly 300 and enhancing the system's adaptability to different bag lengths. The bag opening detector 543 detects whether the bag opening is successful; if unsuccessful, the equipment stops at the next step.

[0040] See Figure 8 and Figure 9 , Figure 8 This is a second partial structural schematic diagram of a bag-making and packaging machine according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of a bag-opening assembly 600 of a bag-making and packaging machine according to an embodiment of this application;

[0041] Furthermore, in this embodiment, the bag opening assembly 600 includes: two sets of first drive screws 610, which are arranged parallel to each other on the upper part of the main housing 100 along the second direction and are synchronously driven by a first drive motor 611; a fourth mounting plate 620 is fixed on the slider of each set of first drive screws 610; a second linear slide 630, whose two ends are respectively connected to the two fourth mounting plates 620, and two second sliding blocks are provided on the second linear slide 630; a first mounting seat 640 is fixed on the second sliding block; two sets of guide plates 650 are respectively fixed to the two fourth mounting plates 620 and located on the side of the second linear slide 630 near the bag opening assembly 500; the two guide plates 650 are connected by two horizontal guide posts 651; two bag opening plates 660 are respectively sleeved on the guide posts 651; the two bag opening plates 660 are respectively connected to the two fourth mounting plates 620. A mounting base 640 is connected to one side facing each other; a bellows cover 670 is fitted onto a guide post 651 and located between two bag-holding plates 660; one side of the bellows cover 670 is connected to one of the bag-holding plates 660, and the other side of the bellows cover 670 is connected to the other bag-holding plate 660, forming a feeding hopper between the bellows cover 670 and the two bag-holding plates 660; wherein, a second linear slide 630 is used to drive two second sliding blocks to move towards or away from each other to adjust the width of the feeding hopper; a second clamping cylinder 680 is fixed to the lower end of the first mounting base 640 and is used to clamp and fix the first bag body after it is fitted onto the feeding hopper; a first membrane-free sensor alarm 681 is provided on the clamping part of the second clamping cylinder 680; a plurality of first photoelectric sensors 690 are arranged on the transmission path of the first drive screw 610. The second linear slide 630 drives two second sliding blocks to move in opposite directions or back to back, which in turn drives the bellows cover 670 to extend and retract via the bag-opening plate 660, thereby steplessly adjusting the width of the feed hopper. After bagging, the second clamping cylinder 680 actuates to clamp and fix the bag opening onto the feed hopper. The first drive motor 611 drives two sets of lead screws to rotate synchronously, causing the entire bag-opening assembly 600 and the clamped bag to move precisely between various workstations along the second direction. The first photoelectric sensor 690 provides position feedback. This allows the equipment to quickly adapt to packaging bag specifications of different widths without changing any hardware, greatly improving the market applicability and production efficiency of the equipment. The first film-free alarm 681 is used to sense whether the second clamping cylinder 680 is clamping a bag. If no bag is detected, the equipment does not work and issues a warning.

[0042] Preferably, the power output end of the first drive motor 611 is connected to a steering gear 612, which is connected to the middle of the transmission shaft 613. The two ends of the transmission shaft 613 are connected to the two first drive screws 610 via bevel gears. This mechanical structure ensures that the rotation angles of the two screws are completely synchronized, fundamentally avoiding the slight speed difference or electrical synchronization delay that may exist when using two independent motors. This ensures that the fourth mounting plates 620 on both sides and the entire feed hopper are absolutely parallel during lateral movement, without any risk of jamming or twisting.

[0043] Preferably, the second linear slide 630 is a magnetically levitated linear slide, which can achieve extremely high movement speed, acceleration, and positioning accuracy. This allows the adjustment of the feed hopper width to be completed almost instantaneously, with extremely high repeatability, perfectly adapting to the requirements of high-speed and flexible production cycles.

[0044] See Figure 8 and Figure 10 , Figure 10 This is a schematic diagram of the structure of the second sealing assembly 700 of a bag making and packaging machine according to an embodiment of this application;

[0045] Furthermore, in this embodiment, the second edge-sealing assembly 700 includes: a fifth mounting plate 710, whose two ends are respectively connected to two fourth mounting plates 620, a third hot press seat 711 fixed on one side of the fifth mounting plate 710, and a second heating wire embedded in the third hot press seat 711; a sixth mounting plate 720, whose two ends are respectively connected to two fourth mounting plates 620, and a pressing space is left between the sixth mounting plate 720 and the fifth mounting plate 710; a plurality of third slide rails 721, fixed to the sixth mounting plate 720 along the second direction, and a driving block 722 slidably connected to each third slide rail 721; a fourth hot press seat 730, connected to the side of each driving block 722 near the third hot press seat 711, and a hot press adhesive strip embedded in the fourth hot press seat 730; and a driving unit for driving all the driving blocks 722 to slide synchronously along the third slide rails 721. This drives all the fourth hot press seats 730 to press synchronously against the third hot press seat 711, thus completing the bag sealing.

[0046] Specifically, the driving unit includes: a driving plate 741 with an array of oblique holes, and each driving block 722 having a driving post at its upper end that mates with the oblique holes; a nut seat 742 fixed to the driving plate 741; and a second driving motor 743, whose power output end is connected to the nut seat 742 via a lead screw, for driving the driving plate 741 to move, thereby causing all driving blocks 722 to slide synchronously through the engagement of the oblique holes and the driving posts. Through a single driving motor and a clever oblique hole conversion mechanism, the heat pressure across the entire width of the bag opening is ensured to be uniform, avoiding loose sealing or wrinkles caused by uneven pressure.

[0047] See Figure 3 Furthermore, in this embodiment, the film dispensing assembly 200 is disposed on the outside of the main housing 100. The film dispensing assembly 200 includes: an air-expansion shaft 210 for fixing the film raw material roll; at least two sets of film feeding rollers 220 for guiding the film raw material; and a perforator 230 disposed between each of the film feeding rollers 220. The air-expansion shaft 210 fixes the film roll, the film feeding rollers 220 guide the film path and stretch the film, and the perforator 230 punches holes in the film at predetermined positions; providing a stable and flat supply of film raw material for the entire system, and the perforation function can be integrated into auxiliary processes to improve the functionality of the packaging bag.

[0048] See Figure 11 , Figure 11 This is a schematic diagram of the structure of the feeding and conveying component 800 of a bag making and packaging machine according to an embodiment of this application.

[0049] Furthermore, in this embodiment, the material feeding and conveying component 800 includes: a material feeding platform 810, disposed below the second edge sealing component 700; and a conveying unit 820, used to convey the bag after feeding to the second edge sealing component 700 for edge sealing, and then to the material feeding platform 810.

[0050] Specifically, the conveying unit 820 includes: two sets of second drive screws 821, which are arranged parallel to each other along the second direction at the bottom of the main housing 100; and are synchronously driven by a third drive motor via a transmission belt 822; a third support 823 is fixed on the slider of the second drive screw 821; a third lifting cylinder 828 is fixed to the third support 823; a third sliding platform 824, whose two ends are respectively connected to the power output ends of the two third lifting cylinders 828; two third sliding blocks are provided on the third sliding platform 824, and a second mounting base 825 is fixed on the sliding block. A third clamping cylinder 826 is provided on the side of the second mounting base 825 near the bag assembly 600; a second membrane-free sensor alarm 829 is provided on the clamping part of the third clamping cylinder 826, which has the same function as the first membrane-free sensor alarm 681; and multiple second photoelectric sensors 827 are arranged on the transmission path of the third sliding platform 824. When the bag-opening assembly 600 stops below the feed inlet 110 and completes the filling of the second bag, the conveying unit 820 immediately starts and moves to directly below the bag-opening assembly 600. The third clamping cylinder 826 rises and actuates, firmly clamping the filled second bag. After confirming that the bag is clamped, the second clamping cylinder 680 of the bag-opening assembly 600 releases, completely transferring control of the bag to the unloading conveying assembly 800. Subsequently, the conveying unit 820, driven by the second drive screw 821, moves the bag horizontally, precisely transporting it to the sealing station where the second sealing assembly 700 is located. The bag is positioned in the pressing space between the fifth mounting plate 710 and the sixth mounting plate 720 of the second sealing assembly 700. At this time, the second sealing assembly 700 operates, performing heat-sealing on the upper end of the bag. Throughout the sealing process, the third clamping cylinder 826 of the unloading conveying assembly 800 remains in a clamping state to stabilize the bag. After the sealing process is completed, the unloading conveyor component 800 starts again, clamps the formed finished bag and lowers it, and places the finished bag onto the unloading platform 810 for discharge.

[0051] As described above, the bag-making and packaging machine of this invention integrates functional components for bag making, bag opening, bag fitting, bag filling, sealing, and material conveying into a single main body. Through synchronized upward bag fitting actions, it achieves continuous automated operation throughout the entire process from film raw materials to finished packaging. By setting an adjustable feeding hopper, it can adapt to bags of different sizes without the need for hopper changes. This equipment offers precise and efficient bag fitting, strong adaptability to bag sizes, greatly improves packaging efficiency and stability, and boasts high reliability and a high success rate, demonstrating significant practical value and commercial potential.

[0052] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A bag-making and packaging machine, characterized in that, include: The main housing has a feed inlet at its upper end for connecting to the unloading equipment; Film delivery assembly, used to provide folded film feedstock; A film stretching assembly includes a translation unit, a clamping unit, and a first lifting unit, which are connected in sequence. The clamping unit can be driven by the translation unit to stretch the film material to a set distance. The first sealing assembly is located at the starting section of the film stretching assembly and is used to seal the short side of the film material and cut a bag-breaking hole at the edge of the sealing assembly to obtain a bag body. A bag opening assembly is disposed on the film pulling path of the film pulling assembly. The bag opening assembly includes a bag opening unit and a second lifting unit. The second lifting unit is connected to the bag opening unit, and the bag opening unit is used to open the bag body. The bag opening assembly is movably disposed between the bag opening assembly and the feed inlet. The bag opening assembly is provided with a feed hopper with an adjustable discharge port. The clamping unit and the bag opening assembly are driven to rise synchronously through the first lifting unit and the second lifting unit so that the bag body is connected to the feed hopper. The second sealing assembly is located on the side of the bag-opening assembly away from the film-pulling assembly, and is used to seal the bag after it has been filled with material; The feeding and conveying component is located below the bag-opening component and the second sealing component, and is used to convey the bag to the second sealing component for sealing and then output; The bag assembly includes: At least two sets of first drive screws are arranged parallel to each other on the upper part of the main housing along the second direction and are synchronously driven by a first drive motor; a fourth mounting plate is fixed on the transmission slider of each set of first drive screws; A second linear slide is connected to the fourth mounting plate, and at least two second sliding blocks are provided on the second linear slide; a first mounting base is fixed on the second sliding block. Two sets of guide plates are respectively fixed to the two fourth mounting plates and located on the side of the second linear slide near the bag opening assembly; the guide plates are connected by two horizontal guide columns. Two bag plates are respectively fitted onto the guide post; at least one of the bag plates is connected to the first mounting base. An accordion-style protective cover is fitted onto the guide post and located between the two bag-holding plates; one side of the accordion-style protective cover is connected to one of the bag-holding plates, and the other side of the accordion-style protective cover is connected to the other bag-holding plate, forming a feed hopper between the accordion-style protective cover and the two bag-holding plates; the second linear slide is used to drive the second sliding block to move, so as to adjust the width of the feed hopper; The second clamping cylinder is fixed to the lower end of the first mounting base and is used to clamp and fix the bag body after it is sleeved on the feed hopper; the clamping part of the second clamping cylinder is equipped with a first membrane-free sensor alarm. The first photoelectric sensor is disposed on the transmission path of the first drive screw.

2. The bag-making and packaging machine according to claim 1, characterized in that, The translation unit includes: The first linear slide is set along the first direction; A first mounting plate is connected to a first sliding block of the first linear slide; the first mounting plate is provided with a first slide rail arranged along a first direction. The membrane stretching assembly also includes: The first support is slidably connected to the first slide rail, and the first support is connected to a first drive cylinder for driving it to move along the first slide rail; the first lifting unit is vertically fixed to the first support, and the power output end of the first lifting unit is connected to a clamping platform. The clamping unit includes at least one first clamping cylinder, which is fixed to the clamping platform.

3. The bag-making and packaging machine according to claim 1, characterized in that, The first edge-sealing component includes: The second support has an opening in its middle for the film material to pass through, and two parallel second mounting plates on both sides of the opening. The second drive cylinder is fixed to one of the second mounting plates. The power output end of the second drive cylinder is connected to at least two first hot press seats. The first hot press seats are inlaid with hot press strips. The third drive cylinder is fixed to another second mounting plate. The power output end of the third drive cylinder is connected to at least two second hot press bases. The second hot press base is embedded with a first heating wire, and the first heating wire is wrapped with high-temperature resistant tape. At least one fourth drive cylinder is arranged in parallel with the third drive cylinder, and the power output end of the fourth drive cylinder is connected to a cutter disposed between the second hot press base.

4. The bag-making and packaging machine according to claim 1, characterized in that, The bag opening component also includes: The third mounting plate, the second lifting unit is vertically mounted on the third mounting plate, and the power output end of the second lifting unit is connected to the lifting plate; Two mounting brackets are arranged facing each other on the lifting plate. The bag opening unit includes at least one vacuum suction cup and a sixth drive cylinder that drives the vacuum suction cup to move, respectively, on each mounting bracket. Two clamping units are arranged facing each other on the two mounting brackets. Each clamping unit includes a seventh drive cylinder and a clamping rubber strip connected to the power output end of the seventh drive cylinder. A bag opening detector is installed on the vacuum suction cup to detect whether the bag opening was successful.

5. The bag-making and packaging machine according to claim 1, characterized in that, The second edge-sealing component includes: The fifth mounting plate is connected to the two fourth mounting plates at both ends respectively. A third hot press base is fixed on one side of the fifth mounting plate, and a second heating wire is embedded in the third hot press base. The sixth mounting plate has its two ends connected to the two fourth mounting plates respectively, and a pressing space is left between the sixth mounting plate and the fifth mounting plate; Multiple third slide rails are fixed to the sixth mounting plate along the second direction, and a drive block is slidably connected to each of the third slide rails; The fourth hot press base is connected to the side of each of the driving blocks near the third hot press base, and a hot press strip is embedded in the fourth hot press base; A drive unit is used to drive all the drive blocks to slide synchronously along the third slide rail.

6. The bag-making and packaging machine according to claim 5, characterized in that, The driving unit includes: The drive plate has an array of oblique holes, and each of the drive blocks has a drive post at its upper end that mates with the oblique holes; Nut seat, fixed to the drive plate; The second drive motor has its power output end connected to the nut seat via a lead screw, which drives the drive plate to move, and then drives all drive blocks to slide synchronously through the cooperation of the inclined hole and the drive column.

7. The bag-making and packaging machine according to claim 1, characterized in that, The film outlet assembly is disposed on the outside of the main housing, and the film outlet assembly includes: Air shaft, used to fix film raw material roll; At least two sets of film feeding rollers are used to guide the film raw material; A punch is disposed between each of the film feeding rollers.

8. The bag-making and packaging machine according to claim 1, characterized in that, The material feeding and conveying assembly includes: The material feeding platform is located below the second edge banding component; The conveying unit is used to convey the unloaded bag to the second sealing assembly for sealing, and then to the unloading platform.

9. The bag-making and packaging machine according to any one of claims 1 to 8, characterized in that, The packaging machine also includes an electrical control box, which is located outside the main body. The electrical control box is connected to the film dispensing assembly, film pulling assembly, first sealing assembly, bag opening assembly, bag opening assembly, second sealing assembly, and material feeding and conveying assembly via signals.

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