Non-stop roll material storing and discharging device of bag making machine

Abstract

The invention discloses a non-stop roll material storing and discharging device of a bag making machine, which comprises a pair of bag making machine racks, and a material roll is arranged between the bag making machine racks on the two sides; the material rack mounting plates on the two sides are located on the two sides of the bag making machine rack and fixed through connecting plates; the fixed guide roller sets are in an inverted U shape, are arranged on the edges of the inner sides of the material frame mounting plates on the two sides and are rotationally fixed; the sliding guide roller set is located between the material frame installation plates on the two sides and vertically slides up and down, and a material roll on the surface of the fixed guide roller set downwards surrounds the sliding guide roller set.

Description

Technical Field

[0001] This invention relates to the field of bag making machine production, and in particular to a non-stop bag making machine roll material storage and unloading device. Background Technology

[0002] Conventional bag making machines are core equipment in the packaging industry. Their main structure includes a single roll unwinding mechanism, a continuous processing unit, and a winding and finishing mechanism. The unwinding mechanism carries roll substrates such as plastic film and composite paper. The processing unit integrates stations such as tension pre-adjustment, on-demand printing, heat sealing (to achieve edge sealing of the bag), and fixed-length cutting. The winding mechanism stacks or winds up the finished bags for storage.

[0003] Its operating process is as follows: after the machine is turned on, the unwinding mechanism releases the substrate, which enters the processing unit after tension adjustment, and completes pattern printing, heat sealing and molding, and fixed-length cutting in sequence. Finally, the rewinding mechanism arranges it into a finished product stack.

[0004] However, traditional equipment adopts the "single roll feeding + stop to change roll" mode: when a roll of substrate is exhausted, the machine needs to be stopped to remove the empty roll, load new substrate and re-align the materials. Each roll change takes 3-5 minutes, which reduces the operating efficiency of the equipment (loss of about 15%-20%) and is also prone to producing defective products such as bag size deviation and poor sealing due to tension fluctuations during shutdown / start-up. It is difficult to match the continuous and high-speed production needs of the modern packaging industry. Some non-stop methods mainly involve slowing down the overall output speed of the device, which requires the use of equipment such as clutches. Especially when too much or too little material is fed, it will cause the tension dynamic balance on the middle side of the device to be broken, resulting in a speed difference in the middle material and causing transverse wrinkles of the film. If multiple sensors are used for detection, it will lead to problems such as the need to disassemble the entire system for maintenance when the internal sensors are damaged, and the inability to disassemble in a modular manner. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a non-stop material storage and feeding device for bag making machines, which mainly solves the technical problem that bag making machines in the prior art usually need to stop to change materials.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a non-stop bag-making machine roll storage and unloading device, including a pair of bag-making machine frames, with a roll of material installed between the two sides of the bag-making machine frames; a pair of material rack mounting plates, the two sides of the material rack mounting plates being fixed to the bag-making machine frames by connecting plates; a fixed guide roller group, the fixed guide roller group being arranged in an inverted U-shape on the inner edge of the two sides of the material rack mounting plates and rotatably fixed, the fixed guide roller group being used to turn the roll of material and surround it around the upper part of the material rack mounting plates; a sliding guide roller group, the sliding guide roller group being located between the two sides of the material rack mounting plates and sliding vertically up and down, the roll of material on the surface of the fixed guide roller group being wrapped downwards around the sliding guide roller group, the sliding guide roller group being close to or away from the fixed guide roller group located at the top of the two sides of the material rack to extend or shorten the length of the roll of material between the two sides of the material rack mounting plates; a traction drive system, the traction drive system having a first cantilever structure at the top and a matching first cantilever structure at the bottom. A cantilevered traction structure includes a traction drive system mounted on the middle side of a fixed guide roller group for applying pressure and traction to the rolling clamp of the material roll; a synchronous drive system located between the sliding guide roller group and the material rack mounting plate, which is a vertical sliding telescopic mechanism for transmitting power to the sliding guide roller group for vertical movement; a tension feedback system located inside the material roll at the front of the traction drive system, which is a swing-type second cantilever structure and a PLC controller. The tension feedback system presets the tension range of the material roll based on the second cantilever structure and controls the up-and-down movement of the cantilever structure of the traction drive system to ensure that the tension at the front of the material roll is within the preset range; and a pressure actuator located below the tension feedback system for clamping and fixing the material roll located at the front of the material rack mounting plate.

[0007] Preferably, the front part of the bag making machine frame is provided with a right-angle groove, and a roll of material is installed inside the right-angle groove. A roll of material is installed on the surface of the roll of material.

[0008] Preferably, the fixed guide roller group includes a main fixed roller and a secondary fixed roller. The main fixed roller is arranged in an inverted U-shape at the edge of the material rack mounting plate and is used to wind the material roll upward around the upper part of the material rack mounting plate and to change the output direction of the roll shaft. The secondary fixed roller is located on the bottom side of the main fixed roller at the upper part of the material rack mounting plate.

[0009] Preferably, the sliding guide roller assembly includes: a guide rail, which is installed in pairs on the inner walls of the material rack mounting plates on both sides; a slider, which slides vertically on the surface of the guide rail; a sliding plate, which is fixed between the sliders on both sides; a main sliding roller, which is rotatably connected between the sliding plates on both sides; and a secondary sliding roller, which is installed on the upper part of the main sliding roller; the material roll is located on the upper part of the material rack mounting plate and is surrounded by the main fixed roller, the main sliding roller, the secondary fixed roller, and the secondary sliding roller in sequence.

[0010] Preferably, the traction structure includes: a servo motor located on the outer surface of the material rack mounting plate on one side; a roll drive shaft located in the middle of the fixed guide roller group and driven by the servo motor, wherein the roll is wound around the upper part of the roll drive shaft by the main sliding roller; the first cantilever structure includes: a pressure roller located on the upper side of the roll drive shaft, the pressure roller being used to press towards the surface of the roll drive shaft, pressure roller swing arms being installed at both ends of the pressure roller, and the end of the pressure roller being rotatably connected to the middle of the two pressure roller swing arms, one end of the pressure roller swing arm being rotatably connected to the inner wall of the material rack mounting plate, and the other end being connected to a first cylinder, the bottom of the first cylinder being fixed to the inner wall of the material rack mounting plate.

[0011] Preferably, the synchronous drive system includes: four rollers arranged in a rectangular shape inside the material rack mounting plate; a synchronous belt installed in a ring shape on the surface of the rollers; a connecting fixing plate installed on the surface of the synchronous belt and fixedly connected to a sliding plate; a rodless cylinder located inside the synchronous belt, with a sliding element in the middle of the cylinder, and the sliding element fixedly installed to the connecting fixing plate; and a cylinder mounting base located at the bottom of the rodless cylinder.

[0012] Preferably, the second cantilever structure includes: a small swing arm located on the outer side of the two material rack mounting plates; a grating ruler installed at one end of the small swing arm and fixed to the outer surface of the material rack mounting plate; a connecting rod fixedly connected to the other end of the small swing arm and rotatably connected through the surfaces of the two material rack mounting plates; a large swing arm sleeved on both sides of the connecting rod and located on the inner side of the two material rack mounting plates; a tension guide roller rotatably fixed at the ends of the two large swing arms, with the coil material behind the coil drive shaft winding downwards to the bottom of the tension guide roller and then winding around the surface of the main fixed roller; and a second cylinder hinged in the middle of the large swing arm and fixedly installed at the bottom of the second cylinder on the inner side of the material rack mounting plate.

[0013] Preferably, the pressure actuator includes: a fixed pressure plate located behind the material roll; a movable pressure plate located below the fixed pressure plate; and a pressing cylinder installed on the bottom of both sides of the movable pressure plate, the pressing cylinder being used to push the movable pressure plate toward the fixed pressure plate; the material roll passes between the fixed pressure plate and the movable pressure plate.

[0014] Preferably, the number of the main fixed roller, the main sliding roller, the slave fixed roller, and the slave sliding roller is not less than six.

[0015] Preferably, a horizontal plate is fixedly connected between the two sides of the material rack mounting plates, and the horizontal plate is located at the rear of the material rack mounting plates.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a combination of mechanically modular structures, which allows multiple modular structures to be disassembled to facilitate later maintenance and repair. The sensors and other structures are also located on the outside, allowing for easy disassembly by staff.

[0017] 2: The present invention has a fixed guide roller group and a sliding guide roller group in the middle. By the vertical movement of the sliding guide roller group, the material roll can form a longer redundancy in the middle, which can ensure that the staff have a longer replacement time when the material roll is used up.

[0018] 3: The device of the present invention is equipped with a traction drive system and a tension feedback system in the middle. The combination of the two can enable the redundant material roll in the middle to maintain dynamic balance tension at all times, so that the overall output speed of the device can be kept constant and uniform. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the feeding mode of the present invention; Figure 3 This is a cross-sectional view of the material storage mode of the present invention; Figure 4 This is a schematic diagram of the right-side structure of the present invention; Figure 5 This is a schematic diagram of the system structure of the present invention; In the diagram: 1. Bag making machine frame; 11. Material roll; 12. Right-angle groove; 13. Material roll shaft; 2. Material rack mounting plate; 21. Connecting plate; 3. Fixed guide roller assembly; 31. Main fixed roller; 32. Slave fixed roller; 4. Sliding guide roller assembly; 41. Guide rail; 42. Slider; 43. Sliding plate; 44. Main sliding roller; 45. Slave sliding roller; 5. Traction drive system; 51. Traction structure; 511. Servo motor; 512. Roll drive shaft; 52. First cantilever structure; 521. Adhesive roller; 522. Roller swing arm; 523. First cylinder; 6. Synchronous drive system; 61. Roller; 62. Synchronous belt; 63. Connecting fixing plate; 64. Rodless cylinder; 65. Cylinder mounting base; 7. Tension feedback system; 71. Second cantilever structure; 72. Small swing arm; 73. Grating ruler; 74. Connecting rod; 75. Large swing arm; 76. Tension guide roller; 77. Second cylinder; 8. Pressure actuator; 81. Fixed pressure plate; 82. Movable pressure plate; 83. Material pressing cylinder; 9. Horizontal board. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] In the first embodiment, as Figure 1-4 As shown, the present invention provides a non-stop roll material storage and feeding device for a bag making machine. Conventional non-stop roll material storage and feeding devices are usually more complex in structure and need to be equipped with a clutch or other electrical sensing elements to form a feedback system. The feeding speed needs to be reduced after the roll 11 is used up. Not only is the structure complex, but once the sensor is damaged, the entire device needs to be disassembled and the internal sensing elements replaced, which is not conducive to maintenance and replacement of parts in long-term use environments. Therefore, the present invention proposes a device mainly composed of mechanical structure. The whole is composed of a bag making machine frame 1 combined with a material rack mounting plate 2, which are connected to each other by a connecting plate 21 to form an upper and lower structure. The connecting plate 21 fixed at the rear of the material rack mounting plate 2 fixes the whole structure. When the mechanical structure between the two material rack mounting plates 2 is not installed, it is easy to move the whole. The structure located on the inner side of the whole is mainly divided into fixed guide roller group 3, sliding guide roller group 4, traction drive system 5, synchronous drive system 6, tension feedback system 7 and pressure actuator 8. Through the combination and action of different mechanical modules, the overall structure is easy to disassemble, and also facilitates later maintenance, inspection and fault repair.

[0022] The material roll 11 is mainly installed on the material reel 13. When changing the material roll 11, the used material reel 13 can be removed from the right angle groove 12 and then exited from the front of the right angle groove 12. Then, the new material reel 13 is moved from the top down until the material reel 13 is fixed in the right angle groove 12 to complete the replacement operation, so as to adapt to the material reel 13 equipment that descends from a high place; or conversely, the used material reel 13 can be removed from the top after being disassembled, and the material reel 13 of the new material roll 11 can be pushed into the horizontal part of the right angle groove 12 at the lower position, so that it is not necessary to lift the heavier material roll 11 to a higher position.

[0023] After the newly installed material roll 11 is pulled out of the conveying section, it can be connected to the part already clamped by the pressure actuator 8. After the connection is completed, the pressing cylinder 83 is activated to lower the movable pressure plate 82, so that the output part of the material roll 11 clamped by the fixed pressure plate 81 and the movable pressure plate 82 can enter the inside of the device.

[0024] At this time, the material roll 11 mainly enters the inner side of the device through the main fixed roller 31 at the front for steering, such as Figure 2-3 As shown, the portion output from the material roll 11 is wound around the main fixed roller 31, the main sliding roller 44, the secondary fixed roller 32 and the secondary sliding roller 45 in sequence, and the tension during the passage is detected by the traction drive system 5 and the tension feedback system 7. Finally, the main fixed roller 31 at the tail turns and outputs the material to the outside of the device. The main fixed roller 31 and the secondary fixed roller 32 are both fixed to the inner side of the material rack mounting plates 2 on both sides, while the main sliding roller 44 and the secondary sliding roller 45 are fixed between the two vertically lifting sliding plates 43, so that when the sliding plate 43 descends, it will pull the material roll 11 to extend its overall length inside. When the material roll 11 is replaced, the sliding plate 43 can retract upward, so that the staff can have a longer time to replace the roll shaft 13 with the new material roll 11 without stopping the machine. The lifting and lowering of the sliding plate 43 is mainly limited by the sliding connection between the sliders 42 at both ends and the slide rail, allowing the sliding plate 43 to lift vertically. The lifting power comes from the synchronous drive system 6. The synchronous drive system 6 has rollers 61 symmetrically arranged inside the material rack mounting plate 2, and a synchronous belt 62 is installed on the rollers 61. The synchronous belt 62 may also have a tensioning wheel and other structures in the middle for use. A connecting fixing plate 63 is installed on one side of the synchronous belt 62. The connecting fixing plate 63 is mainly fixedly connected to the sliding part of the rodless cylinder 64, so that the rodless cylinder 64 moves along the vertical path through the sliding part, and drives the synchronous belt 62 to move together through the connecting fixing plate 63. At the same time, the front sliding plate 43 is also driven to lift vertically, thereby realizing the extension of the output length of the material roll 11 on the middle side. At the same time, through the winding of the multi-layer roller structure, such as Figure 2-3 As shown, the winding angle of the material roll 11 between the main fixed roller 31, the main sliding roller 44, the secondary fixed roller 32 and the secondary sliding roller 45 is an acute angle, which reduces the tension loss between multiple rollers. The sliding guide roller group 4, which is raised and lowered, can further tension the material roll 11. When needed, the winding sequence between different rollers can also be adjusted to adapt to materials with different friction coefficients to form winding effects with different acute angles.

[0025] Since both reducing and increasing the overall length of the device require dynamic balance in accordance with the tension strength, an adjustable traction drive system 5 and a tension feedback system 7 are installed in the middle. The traction drive system 5 mainly uses the extrusion of the first cantilever structure 52 to increase the extrusion pressure of the material roll 11 wound by the traction structure 51, thereby controlling the feeding speed and material position to adjust the tension strength of the material roll 11. The traction structure 51 itself is mainly driven by the servo motor 511 to the roll drive shaft 512, so that the servo motor 511 is the main regulator of the feeding speed. When the first cylinder 523 moves downward, one end of the pressure roller swing arm 522 is rotatably connected to the material rack mounting plate 2, and the middle rubber pressure roller 521 can apply pressure to the roll drive shaft 512 to increase friction, thereby avoiding lateral wrinkles when the material roll 11 is output and ensuring the uniformity of the traction speed. A pressure sensor can also be installed inside the rubber pressure roller 521, and it is synchronously connected to the PLC controller under the tension feedback system 7 with the first cylinder 523 to achieve the technical effect of coordinated adjustment.

[0026] The tension feedback system 7 mainly achieves the overall tension preset function through the second cantilever structure 71, which is located at the grating ruler 73, such as... Figure 1 As shown, when the connecting rod 74 rotates, the small swing arm 72 also rotates synchronously. The grating ruler 73, which intersects with the small swing arm 72, will move downwards. The rotation of the connecting rod 74 is mainly controlled by the second cylinder 77 at the lower part of the large swing arm 75. The end of the swing arm is equipped with a tension guide roller 76, so that after the second cylinder 77 moves, the tension guide roller 76 installed on the large swing arm 75 descends until the material roll 11 is tensioned. At this time, the grating ruler 73 at the end of the connecting rod 74 moves, and the resulting electrical signal is output to the PLC controller. The corresponding tension value can be obtained by the displacement distance of the grating ruler 73. For example, the specific tension value can be obtained according to the following formula: ; Where, s: the displacement measured by the grating ruler, that is, the linear displacement of the grating ruler reading head driven by the swing arm, which is approximately a straight line at small angles; T: Tension of the coil, i.e., the tension value of the coil on one side of the guide roller; 2T: The force on the tension guide roller is 2T. The coiled material wraps around the guide roller at an angle of approximately 180°. L1: Guide roller lever arm, which is the distance from the center of the tension guide roller to the fulcrum of the swing arm; L2: Cylinder lever arm, which is the distance from the connection point between the cylinder and the rocker arm to the fulcrum; L3: The lever arm of the grating ruler, which is the distance from the mounting point of the grating ruler reading head to the pivot point of the swing arm; F 缸 The force exerted by the cylinder, its thrust / pull, is determined by the air pressure and piston area: F 缸 =P×S, where P is the cylinder air pressure and S is the effective piston area; Therefore, after obtaining the specific tension value through the displacement of the grating ruler 73, the PLC controller (not shown) connects to the first cylinder 523, the second cylinder 77, and other sensors, such as the pressure sensor of the rubber pressure roller 521. The PLC controller can then adjust the rotation speed of the traction drive system 5 and the pressure exerted on the material roll 11 according to the dynamic balance requirements. Figure 1 As shown, when the winding shaft 13 is connected to an external drive unit, it can also be connected to a PLC controller to achieve overall automated control. This ensures that when the winding shaft 13 with the installed material roll 11 is replaced, the tension of the material remains constant, thus achieving the effect of ensuring tension without stopping the machine for replacement.

[0027] In summary, its overall structure is simple and easy to operate. The multi-modal design facilitates the combination and disassembly of different mechanical modules. The designed internal redundant structure can work with the tension feedback system to achieve dynamic tension balance and achieve the effect of changing the roll shaft without stopping the machine.

[0028] In the second embodiment, as Figure 5 As shown, the system corresponding to the first embodiment is disclosed, including: The system host includes a hard disk module, a computing unit and a clock chip. The system host is used to collect data from the material roll 11 and record the control scheme. A camera is installed between the two material rack mounting plates 2 on both sides. The camera is electrically connected to the system host and is used to capture the lifting height of the rodless cylinder 64. A drive unit is used to transmit power to the roll shaft 13. The drive unit is electrically connected to the system host and its speed is controlled by the system host. A data acquisition sensor is used to collect speed information of the front and rear of the material roll 11 and output it to the system host. The system host is also connected to the PLC controller, and the grating ruler 73 is electrically connected to the PLC controller. The system host collects information on the tension of the material roll 11 and the speed of the front and rear of the material roll 11, and dynamically adjusts the rotation speed of the drive unit and the height of the rodless cylinder 64. Specifically, its structure mainly consists of an external system host, and a camera is installed between the material rack mounting plates 2 on both sides. The camera captures the rodless cylinder 64 to record its lifting height and the uniform lifting rate of the rodless cylinder 64 at all times. When changing materials without stopping the machine, the lifting height and speed of the rodless cylinder 64 will be combined with the collection of tension information, so that the PLC controller outputs dynamically changing information until the scheme is adjusted to the optimal scheme by the computing unit of the system host. The computing unit can be a CPU or MCU microcontroller chip, etc. At the same time, the camera records the material of the current material roll 11 to the hard disk module. When the device uses the same material roll 11 for the second time, it can directly call the current scheme. The core of the system lies in coordinating the actions of the drive unit and the rodless cylinder by monitoring material surplus, the difference in feed and discharge speeds, and real-time tension. The control logic is divided into two levels, with the system host primarily responsible for macroscopic adjustments of "speed and position." It receives height data from the camera and front- and rear-end speed data to calculate the target rotational speed of the drive motor, such as... Figure 5 As shown, the acquisition sensors are divided into speed sensor A and speed sensor B, both of which can be applied to the front and rear parts of the device that do not require adjustment, to acquire the speed of the roller shaft at the frontmost and rearmost parts of the main fixed roller 31. The PLC controller is mainly responsible for the micro-adjustment of "tension". It receives the micro-displacement signal of the grating ruler, calculates the real-time tension using the algorithm as described in Example 1, and adjusts the cylinder pressure at high frequency to maintain dynamic balance. When it is necessary to change the material roll, the staff brakes or slows down the front roll shaft to perform the material receiving operation. At this time, the speed sensor B at the rear end of the bag making machine continues to operate normally. Since the front end stops feeding material, the rodless cylinder 64 rises from the bottom under the action of tension. The camera captures the height change and feeds the signal back to the system host. The host records the current "material shortage state". When the new material roll is connected and starts to rotate, the system host controls the drive unit to drive the roll shaft (13) at a speed higher than the rear end output speed according to the recorded material shortage state until the camera detects that the rodless cylinder (64) has fallen back to the preset storage position at the bottom. The system then resumes synchronous speed operation, thereby achieving a smooth transition of full automatic operation without stopping the machine. For example, the only variables that need to be defined in this scheme are the feeding speed collected by speed sensor A and the discharge speed collected by speed sensor B. Under long-term recording conditions, the redundant discharge time in the middle can be calculated based on the length between the middle fixed guide roller group 3 and the sliding guide roller group 4, and the remaining redundant discharge can be calculated based on the current lifting height of the rodless cylinder. The preset ideal storage height can be adjusted by using the collected tension information. When establishing the calculation formula, the main unit variable is only the lifting height of the rodless cylinder, while the discharge rate and feed rate are adjusted by the downstream equipment. Therefore, the conventional length calculation formula can be used, and the current lifting height of the rodless cylinder can be finely adjusted based on the tension information. Since different material rolls 11 have different material properties, their tension information will also change. Therefore, the lifting height during the fine adjustment of the rodless cylinder will also change accordingly. So after the optimal adjustment scheme is established, it can be recorded in the hard disk module. When the camera captures the same material roll 11 entering the device again, the historical optimal scheme can be directly called for use. This approach can not only handle a single production line, but also, when faced with multiple different devices, the system host can intervene in different material rolls 11 to form an adjustment function, ultimately achieving a unified control effect.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-stop roll material storage and unloading device for a bag making machine, characterized in that, include: A pair of bag making machine frames (1), with a material roll (11) installed between the two sides of the bag making machine frames (1); A pair of material rack mounting plates (2), the material rack mounting plates (2) on both sides are located on both sides of the bag making machine frame (1) and fixed by connecting plates (21); Fixed guide roller group (3), the fixed guide roller group (3) is arranged in an inverted U shape on the inner edge of the material rack mounting plate (2) on both sides and is fixed in a rotating manner. The fixed guide roller group (3) is used to turn the material roll (11) and surround the upper part of the material rack mounting plate (2); The sliding guide roller group (4) slides vertically up and down between the two sides of the material rack mounting plate (2). The material roll (11) on the surface of the fixed guide roller group (3) wraps downward around the sliding guide roller group (4). The sliding guide roller group (4) is close to or away from the fixed guide roller group (3) located at the top of the two sides of the material rack to extend or shorten the length of the material roll (11) between the two sides of the material rack mounting plate (2). The traction drive system (5) has a first cantilever structure (52) at the top and a traction structure (51) that cooperates with the first cantilever structure (52) at the bottom. The traction drive system (5) is installed in the middle of the fixed guide roller group (3) to apply pressure and traction to the material roll (11) in a rolling clamping manner. Synchronous drive system (6), the synchronous drive system (6) is located between the sliding guide roller group (4) and the material rack mounting plate (2), the synchronous drive system (6) is a vertical sliding telescopic mechanism, used to drive the sliding guide roller group (4) to move vertically; Tension feedback system (7), the tension feedback system (7) is located inside the material roll (11) at the front of the traction drive system (5), the tension feedback system (7) is a swing-type second cantilever structure (71) and a PLC controller, the tension feedback system (7) presets the tension range of the material roll (11) according to the second cantilever structure (71), and controls the cantilever structure of the traction drive system (5) to move up and down, so that the tension of the material roll (11) when it is output at the front is within the preset range; Pressure actuator (8) is located below tension feedback system (7) and is used to clamp and fix the material roll (11) located in front of material rack mounting plate (2).

2. The non-stop roll material storage and unloading device for a bag making machine according to claim 1, characterized in that, The front of the bag making machine frame (1) is provided with a right angle groove (12), and a roll shaft (13) is installed inside the right angle groove (12). A roll of material (11) is installed on the surface of the roll shaft (13).

3. The non-stop roll material storage and unloading device for a bag making machine according to claim 2, characterized in that, The fixed guide roller group (3) includes a main fixed roller (31) and a secondary fixed roller (32). The main fixed roller (31) is arranged in an inverted U-shape on the edge of the material rack mounting plate (2) and is used to wrap the material roll (11) upward around the upper part of the material rack mounting plate (2) and to turn the output direction of the roll shaft (13). The secondary fixed roller (32) is located on the bottom side of the main fixed roller (31) on the upper part of the material rack mounting plate (2).

4. A non-stop roll material storage and unloading device for a bag making machine according to claim 3, characterized in that, The sliding guide roller assembly (4) includes: Guide rail (41), the guide rail (41) is installed in pairs on the inner wall of the material rack mounting plate (2) on both sides; The slider (42) slides vertically on the surface of the guide rail (41); A sliding plate (43) is fixedly mounted between the two sliders (42) on both sides; The main sliding roller (44) is rotatably connected between the two sliding plates (43) on both sides; The secondary sliding roller (45) is mounted on the upper part of the main sliding roller (44); The material roll (11) is located on the upper part of the material rack mounting plate (2) and is surrounded by a main fixed roller (31), a main sliding roller (44), a secondary fixed roller (32) and a secondary sliding roller (45) in sequence.

5. A non-stop roll material storage and unloading device for a bag making machine according to claim 4, characterized in that, The traction structure (51) includes: A servo motor (511) is located on the outer surface of the material rack mounting plate (2) on one side; The roll drive shaft (512) is located in the middle of the fixed guide roller group (3) and is driven by a servo motor (511). The roll (11) is surrounded by the main sliding roller (44) to the upper part of the roll drive shaft (512). The first cantilever structure (52) includes: A pressure roller (521) is located on the upper side of the roll drive shaft (512). The pressure roller (521) is used to press against the surface of the roll drive shaft (512). Pressure roller swing arms (522) are installed at both ends of the pressure roller (521), and the end of the pressure roller (521) is rotatably connected to the middle of the two pressure roller swing arms (522). One end of the pressure roller swing arm (522) is rotatably connected to the inner wall of the material rack mounting plate (2), and the other end is connected to a first cylinder (523). The bottom of the first cylinder (523) is fixed to the inner wall of the material rack mounting plate (2).

6. A non-stop roll material storage and unloading device for a bag making machine according to claim 5, characterized in that, The synchronous drive system (6) includes: Rollers (61), four of the rollers (61) are arranged in a rectangular shape inside the material rack mounting plate (2); A timing belt (62) is mounted in a ring on the surface of a roller (61); A connecting fixing plate (63) is installed on the surface of the timing belt (62), and the connecting fixing plate (63) is fixedly connected to the sliding plate (43); A rodless cylinder (64) is located inside the synchronous belt (62). A sliding member is provided in the middle of the rodless cylinder (64), and the sliding member is fixedly installed with the connecting fixing plate (63). A cylinder mounting base (65) is located at the bottom of a rodless cylinder (64).

7. A non-stop roll material storage and unloading device for a bag making machine according to claim 6, characterized in that, The second cantilever structure (71) includes: Small swing arm (72), the small swing arm (72) is located on the outside of the material rack mounting plate (2) on both sides; A grating ruler (73) is installed at one end of the small swing arm (72), and the grating ruler (73) is fixed to the outer surface of the material rack mounting plate (2); The connecting rod (74) is fixedly connected to the other end of the small swing arm (72), and the connecting rod (74) is rotatably connected through the surface of the material rack mounting plate (2) on both sides; Large swing arm (75), the large swing arm (75) is sleeved on both sides of the connecting rod (74), and the large swing arm (75) is located inside the material rack mounting plate (2) on both sides; Tension guide roller (76), the tension guide roller (76) is located at the ends of the large swing arms (75) on both sides and rotated and fixed. The roll material behind the roll drive shaft (512) is wrapped downward to the bottom of the tension guide roller (76) and then wrapped around the surface of the main fixed roller (31) by the tension guide roller (76). The second cylinder (77) is hinged in the middle of the large swing arm (75), and the bottom of the second cylinder (77) is fixedly installed inside the material rack mounting plate (2).

8. A non-stop roll material storage and unloading device for a bag making machine according to claim 7, characterized in that, The pressure actuator (8) includes: A fixed pressure plate (81) is located on the rear side of the coil (11); A movable pressure plate (82) is located below the fixed pressure plate (81); A pressing cylinder (83) is installed on the bottom of both sides of the movable pressing plate (82). The pressing cylinder (83) is used to push the movable pressing plate (82) toward the fixed pressing plate (81). The roll (11) passes between the fixed pressure plate (81) and the movable pressure plate (82).

9. A non-stop roll material storage and unloading device for a bag making machine according to claim 4 or 8, characterized in that, The number of the main fixed roller (31), the main sliding roller (44), the secondary fixed roller (32) and the secondary sliding roller (45) is not less than six. A horizontal plate (9) is fixedly connected between the two sides of the material rack mounting plate (2). The horizontal plate (9) is located at the rear of the material rack mounting plate (2).

10. A non-stop roll material storage and unloading device for a bag making machine according to claim 9, characterized in that, Also includes: The system host includes a hard disk module, a computing unit and a clock chip. The system host is used to collect data from the material roll (11) and record the control scheme. The camera is located between the two material rack mounting plates (2) on both sides. The camera is electrically connected to the system host. The camera is used to capture the lifting height of the rodless cylinder (64). A drive unit is used to transmit power to the roll shaft (13). The drive unit is electrically connected to the system host and its speed is controlled by the system host. The acquisition sensor is used to acquire the speed information of the front and rear of the material roll (11) and output it to the system host. The system host is also connected to the PLC controller. The grating ruler (73) is electrically connected to the PLC controller. The system host collects information on the tension of the material roll (11) and the speed of the front and rear of the material roll (11) to dynamically adjust the rotation speed of the drive unit and the height of the rodless cylinder (64).

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