A packaging bag production line

Abstract

The present invention discloses a packaging bag production line, including a feeding and film placing mechanism, a traction sealing and cutting mechanism, a punching and bag collecting mechanism, and a centralized control module. The feeding and film placing mechanism, the traction sealing and cutting mechanism, and the punching and bag collecting mechanism are arranged in sequence along the conveying direction of the rolled packaging bag, and a bag stacking device is arranged between the traction sealing and cutting mechanism and the punching and bag collecting mechanism. The centralized control module is arranged on the outside of the feeding and film placing mechanism. The present invention realizes the fully automatic intelligent loading and unloading of the feeding shaft, and the traction sealing and cutting mechanism and the punching and bag collecting mechanism have high working efficiency, high processing accuracy, low error rate, and greatly reduce labor costs.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag forming equipment, and in particular to a packaging bag production line. Background Art

[0002] At present, the continuous roll film bag production line is generally composed of a feeder, a sealing machine, a point breaking machine and a receiving machine, among which sealing and point breaking are two indispensable processes. In the prior art, most bag-making production lines separate these two processes, which makes the bag-making production line bulky and has high manufacturing costs. There are also some bag-making machines that set the heat sealing knife and the point breaking knife at the same station, and at the same time are located above the semi-finished roll packaging bag. The heat sealing knife and the point breaking knife are driven up and down by the driving device at the same time, and the sealing and point breaking cutting steps are completed synchronously. However, this structure makes it difficult to adjust the pressure of the sealing knife or the point breaking knife separately, which can easily cause poor sealing quality or poor point breaking cutting quality. In addition, both of them apply pressure to the semi-finished roll packaging bag in the same direction at the same time, making it difficult for the semi-finished roll packaging bag to be tensioned, and easy to wrinkle or deform.

[0003] The feeder is responsible for delivering the thin semi-finished roll packaging bags made by the film blowing machine to the sealing machine at a minimum tension and uniform speed. The film roll is heavy and troublesome to load. The traditional loading method is manual operation, which has great safety problems. At the same time, the low efficiency leads to high production costs and cannot realize automated production lines.

[0004] The existing fixing structure of the feeding shaft on the movable frame is relatively simple, and the manual operation efficiency is low. The limiting effect of the fixing structure is not good when it works continuously for a long time.

[0005] At present, there is a shortage of labor in my country. In order to reduce labor costs and improve work efficiency, automatic punching of plastic bags has become particularly important for the production of plastic bags. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a packaging bag production line.

[0007] To achieve the above object, the present invention discloses a packaging bag production line, comprising:

[0008] A material feeding and film placing mechanism, the material feeding and film placing mechanism comprises a fixed base frame, a movable frame, a first swing arm, a second swing arm, a reciprocating motion mechanism, a pair of material feeding drive mechanisms, a pair of limit devices, and a pair of shaft retracting devices. The movable frame is movably arranged on the fixed base frame, and the reciprocating motion mechanism drives the movable frame to reciprocate left and right on the fixed base frame;

[0009] The first and second swing arms are respectively arranged at intervals on both sides of the front end of the movable frame, and the tops of one end of the first swing arm and the second swing arm are provided with a first groove and a second groove, and the upper parts of the two side plates in the length direction of the movable frame are respectively provided with a third groove and a fourth groove, and the feeding driving mechanism drives the first and second swing arms to flip upwards, so that the packaging bag roll moves from the first and second grooves to the third and fourth grooves, and then the rolled packaging bag is conveyed to the traction sealing and cutting mechanism through the fixed base frame and the guide rollers on the movable frame, and the pair of limiting devices are respectively arranged on the two side walls in the length direction of the movable frame, and the pair of shaft retracting devices are respectively arranged on the two outer sides of the movable frame, and the side walls in the length direction of the movable frame are provided with a residual monitoring module, and the residual monitoring module monitors the residual amount of the rolled packaging bag located on the third and fourth grooves;

[0010] A first detection device is disposed in each of the first groove and the second groove, and a second detection device is disposed in each of the third groove and the fourth groove;

[0011] A traction sealing and cutting mechanism, wherein the traction sealing and cutting mechanism comprises a heat sealing mechanism, a point breaking mechanism, and a bag roll conveying mechanism, wherein the heat sealing mechanism comprises a heat sealing knife and a first bottom plate, wherein the heat sealing knife is movably arranged above the semi-finished rolled packaging bag, wherein the first bottom plate is arranged below the semi-finished rolled packaging bag and coincides with the projection of the heat sealing knife, wherein the point breaking mechanism comprises a point breaking knife, a second bottom plate, and a bag pressing knife, wherein the second bottom plate is arranged adjacent to the first bottom plate, wherein the point breaking knife is movably arranged between the first and second bottom plates and the cutting edge faces the semi-finished rolled packaging bag, wherein the bag pressing knife is movably arranged above the semi-finished rolled packaging bag and the two ends coincide with the projections of the first and second bottom plates respectively, wherein the bag roll conveying mechanism is used for conveying the semi-finished rolled packaging bag to move into the heat sealing mechanism and the point breaking mechanism, wherein the heat sealing knife, the point breaking knife, and the bag pressing knife are driven to move up and down by a driving mechanism;

[0012] A punching and bag collecting mechanism, wherein a bag stacking device is arranged between the traction and sealing cutting mechanism and the punching and bag collecting mechanism, and the independent packaging bags output by the traction and sealing cutting mechanism are stacked between the traction and sealing cutting mechanism and the punching and bag collecting mechanism through the bag stacking device, and the punching and bag collecting mechanism comprises a punching device, a clamping device, and a conveying device, and the clamping device clamps the packaging bags at the bag stacking device, punches them through the punching device, and then clamps them on the conveying device;

[0013] A centralized control module, wherein the centralized control module is arranged outside the feeding and film placing mechanism, and the feeding drive mechanism, the residual quantity monitoring module, the first detection device, the second detection device, the limit device, and the shaft retracting device are electrically connected to the centralized control module respectively;

[0014] When the first detection device detects the packaging bag roll, it sends a control signal to the centralized control module, so that the centralized control module sends a start control signal to the feeding drive mechanism, and the packaging bag roll is moved into the third and fourth grooves by turning the first swing arm and the second swing arm upward;

[0015] When the second detection device detects the packaging bag roll, it sends a control signal to the centralized control module, so that the centralized control module sends a start control signal to the limiting device, and the packaging bag roll is limited to the third and fourth grooves by the limiting device;

[0016] The remaining amount monitoring module detects the distance between itself and the outermost side of the packaging bag roll in real time, and transmits the detection data to the centralized control module for operation. When the packaging bag roll is unloaded, the centralized control module sends a start control signal to the limit device, the shaft retraction device, and the feeding drive mechanism in turn. The limit device is reset, and the shaft retraction device drives the packaging bag roll to disengage from the third and fourth grooves and move into the first and second grooves. The first and second swing arms flip downward and reset.

[0017] Furthermore, the feeding and film placing mechanism also includes a feeding shaft, a pair of limiting sleeves are arranged on the outer periphery of both ends of the feeding shaft, the feeding shaft is embedded in the first groove, the second groove or the third groove, the fourth groove through a pair of limiting sleeves, a magnetic powder brake is arranged on an outer side surface of the movable frame, and one end of the feeding shaft is drivingly connected to the magnetic powder brake;

[0018] A connecting rod is arranged at the lower part between the first swing arm and the second swing arm, and the outer periphery of the connecting rod is connected to the movable frame via a bearing seat; the feeding drive mechanism comprises a single-rod cylinder and a connecting shaft, the single-rod cylinder is obliquely arranged on the inner side wall in the length direction of the movable frame, the inclination direction of the single-rod cylinder is inclined in the direction of the connecting rod, the connecting shaft is arranged on the first swing arm, the movable rod of the single-rod cylinder is fixedly connected to the connecting shaft, and the single-rod cylinder drives the first swing arm to flip.

[0019] Furthermore, the limiting device includes a first linear drive device, a limiting movable plate, and a support mounting block, a side of the bottom surface of the limiting movable plate is provided with a limiting notch corresponding to the limiting sleeve, the first linear drive device is arranged above a side plate in the length direction of the movable frame, and is spaced from the third groove, the support mounting block is arranged on the upper part of the inner side wall in the length direction of the movable frame, located between the first linear drive device and the third groove, a guide block is provided on the upper part of the outer side surface of the support mounting block, the guide block is opposite to the side plate in the length direction of the movable frame up and down, a guide slot is provided at the bottom of the guide block, and the first linear drive device drives the limiting movable plate to slide along the guide slot to make the limiting notch approach / move away from the limiting sleeve.

[0020] Further, the shaft retracting device includes a second linear drive device and a push bar, the second linear drive device is obliquely arranged on the outer side surface in the length direction of the movable frame, the inclination direction of the second linear drive device is inclined toward the first groove, and the push bar is arranged between the limit sleeve and the second linear drive device;

[0021] The end of the other end of the pushing bar is provided with an inserting portion corresponding to the limiting sleeve, and the second linear driving device drives the inserting portion to be inserted into the limiting sleeve;

[0022] The upper section of one side of the movable frame is provided with a first rubber roller, a second rubber roller, and a third rubber roller, and the first rubber roller, the second rubber roller, and the third rubber roller are arranged in sequence along the conveying direction of the film;

[0023] A pair of supports is provided on one side of the fixed base frame along the film conveying direction, the outer contour of the pair of supports is L-shaped, and the inner side surfaces in the length direction of the pair of supports are respectively fixedly connected to the two outer side surfaces in the length direction of the fixed base frame;

[0024] A support rod and a fourth rubber roller are respectively arranged between the pair of supports, the ends of both ends of the support rod are arranged at the upper part between the pair of supports, and the ends of both ends of the fourth rubber roller are arranged at the middle part between the pair of supports, and the film is wound around the first rubber roller, the second rubber roller, the fourth rubber roller and the third rubber roller in sequence.

[0025] Further, the reciprocating motion mechanism includes a third linear drive device, a pair of first slide rails, a pair of second slide rails, and an electric eye. The pair of first slide rails and the pair of second slide rails are respectively longitudinally arranged on the fixed base frame and are spaced apart from each other. The electric eye is movably arranged on the support rod, and the electric eye is opposite to the third rubber roller.

[0026] The third linear drive device is disposed between the pair of first slide rails and the pair of second slide rails;

[0027] The bottom surface of the movable frame is provided with a pair of first sliders and a pair of second sliders corresponding to the pair of first slide rails and the pair of second slide rails. The third linear drive device drives the movable frame to move longitudinally, so that the pair of first sliders and the pair of second sliders slide along the pair of first slide rails and the pair of second slide rails respectively.

[0028] Furthermore, the traction sealing and cutting mechanism also includes a heat sealing knife adjustment mechanism, which includes a screw, a nut, a sliding sleeve, an upper tube positive block, a lower tube positive block and a spring. A crossbeam is provided above the heat sealing knife so as to be liftable. The sliding sleeve is fixed to the crossbeam. The crossbeam has a through hole for the screw to pass through. The sliding sleeve has a cavity with an opening toward the through hole. The upper end of the screw is slidably inserted into the through hole and extends into the cavity. The nut and the upper end thread of the screw are connected. The connection makes the upper end of the screw unable to leave the cavity downward, the lower end of the screw is fixedly connected to the heat sealing knife, the lower tube positive block is slidably sleeved on one end of the screw located in the cavity, the upper tube positive block is arranged above the screw in the cavity, a spring is arranged between the upper and lower tube positive blocks, the cavity has a top wall so that the upper tube positive block cannot leave the cavity upward, and the screw has a boss below the lower tube positive block so that when the screw is raised, the lower tube positive block rises accordingly;

[0029] The crossbeam is also provided with a bag pressing knife adjusting mechanism, which has the same structure as the heat sealing knife adjusting mechanism, and the lower end of the screw of the bag pressing knife adjusting mechanism is fixedly connected to the bag pressing knife;

[0030] The heat sealing knife adjustment mechanism comprises first and second heat sealing knife adjustment mechanisms with the same structure arranged on the crossbeam;

[0031] The bag pressing knife adjusting mechanism comprises first and second bag pressing knife adjusting mechanisms with the same structure which are arranged on the crossbeam.

[0032] Furthermore, the bag roll conveying mechanism includes a rotatable upper glue roller and a lower glue roller, the side walls of the upper and lower glue rollers are closely arranged on one side of the heat sealing mechanism and the point-breaking mechanism, and a plurality of circumferential grooves are arranged on the side walls of the upper and lower glue rollers and / or the lower glue rollers. A plurality of air blowing pipes extend from one side of the upper and lower glue rollers through the circumferential grooves to the other side of the upper and lower glue rollers, and the air ports face the heat sealing mechanism and the point-breaking mechanism. The upper and lower glue rollers and / or the lower glue rollers are driven to rotate by a driving device, and the air blowing pipes are connected to the air blowing device.

[0033] Furthermore, the bag roll conveying mechanism also includes a bag unfolding mechanism, the semi-formed bag roll first passes through the bag unfolding mechanism and then is conveyed to the heat sealing mechanism and the point breaking mechanism through the bag roll conveying mechanism, the bag unfolding mechanism includes a front roller, a rear roller and a bag passing plate arranged between the front and rear rollers, and the semi-formed bag roll passes through the top surface of the front roller, the bottom surface of the bag passing plate and the top surface of the rear roller in sequence to be flattened;

[0034] The bag unfolding mechanism also includes a gravity pressure rod arranged between the rear drum and the bag roll conveying mechanism, and the side wall of one end of the gravity pressure rod flattens the top surface of the semi-formed bag roll, and the other end of the gravity pressure rod is swingably arranged so that the gravity pressure rod can swing and rise and fall with the rise and fall of the semi-formed bag roll, so that one end of the gravity pressure rod flattens the top surface of the semi-formed bag roll at all times.

[0035] Furthermore, the punching and bag collecting mechanism further comprises a punching and bag collecting frame and a clamping device transmission mechanism arranged on both sides of the punching and bag collecting frame in the length direction, the punching device is arranged in the middle of the punching and bag collecting frame, and the clamping device transmission mechanism drives the clamping device to reciprocate in the punching and bag collecting frame along the conveying direction of the packaging bag;

[0036] The punching device comprises a punching cylinder, a movable rod of the punching cylinder is provided with a cutting portion, and the punching cylinder is fixedly arranged above the punching and bag collecting machine frame;

[0037] A rotating part is provided below the cutting part. The rotating part comprises a rotating platform. The rotating platform is driven to rotate by a platform rotating driving device.

[0038] Furthermore, the clamping device includes a movable plate, a plurality of guide support plates, a plurality of movable pressure rods, and a plurality of pressure rod driving devices. The movable plate is longitudinally arranged in the punching and bag collecting machine frame, and both sides of the movable plate are transmission-connected to the transmission mechanism of the clamping device. The plurality of guide support plates are arranged on the movable plate at intervals, and the plurality of guide support plates are opposite to the bag stacking device. The plurality of movable rods are respectively movably arranged above the plurality of guide support plates, and the plurality of pressure rod driving devices drive the plurality of movable pressure rods to flip up and down, so that the movable pressure rods are close to / away from the surface of the guide support plates.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] It realizes intelligent and fully automatic loading and unloading of the feeding shaft, greatly improving work efficiency while reducing production costs. The structure of the shaft retraction device is easy to maintain and can be improved on existing equipment to reduce modification costs.

[0041] By setting the point breaking knife separately under the film roll and the sealing knife separately above the film roll, the sealing knife and the point breaking knife are independent of each other and do not affect each other, so that the height, angle and size can be adjusted to achieve the best point breaking and sealing effect, and it is easier to disassemble and replace. The two apply reverse pressure to the film roll to tighten it, so that the point breaking and sealing effects are better;

[0042] The film roll is pressed tightly between the first and second bottom plates by setting a film pressing knife, thereby ensuring the quality of the point breaking line and preventing the film roll outside the film pressing knife from being pulled;

[0043] The sealing knife is adjustable by setting a sealing knife adjustment mechanism, and the initial height of the sealing knife can be adjusted by adjusting the nut. The compression stroke of the spring is different according to the different initial heights, so that the pressure of the sealing knife is different, thereby achieving adjustable sealing knife pressure. Similarly, the film pressing knife adjustment mechanism is set to make the film pressing knife pressure adjustable;

[0044] By setting two sealing knife adjustment mechanisms to adjust the height of two different positions on the sealing knife, the horizontality of the sealing knife can be adjusted. Similarly, by setting two laminating knife adjustment mechanisms, the horizontality of the laminating knife can be adjusted.

[0045] By arranging circumferential grooves on the upper and lower rubber rollers of the film feeding mechanism to accommodate the air blowing pipe, the air blowing pipe can blow air in the film roll feeding direction, and can blow air in the film roll feeding direction at the same time on the upper and lower sides of the film roll, ensuring that the film roll is flat when entering the sealing mechanism and the point breaking mechanism;

[0046] The film roll is ensured to be flat by setting up the film unrolling mechanism.

[0047] The punching and bagging mechanism has high working efficiency, high processing accuracy, low error rate, and greatly reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0049] Figure 2 It is a schematic cross-sectional view of the overall structure of the material loading and film placing mechanism according to an embodiment of the present invention;

[0050] Figure 3 It is a three-dimensional schematic diagram of the overall structure of the material loading and film placing mechanism according to an embodiment of the present invention;

[0051] Figure 4 It is a three-dimensional schematic diagram of the overall structure of the feeding and film placing mechanism implemented in the present invention from another angle;

[0052] Figure 5 for Figure 4 A magnified schematic diagram of part A;

[0053] Figure 6 It is a structural schematic diagram of the shaft retracting device of the present invention;

[0054] Figure 7 It is a schematic diagram of the overall structure of the reciprocating motion mechanism of the present invention;

[0055] Figure 8 This is a circuit diagram of a centralized control module according to an embodiment of the present invention;

[0056] Fig. 9 It is a schematic diagram of the overall structure of the traction sealing and cutting mechanism according to an embodiment of the present invention;

[0057] Fig.10 It is a cross-sectional view of the overall structure of the traction sealing and cutting mechanism according to an embodiment of the present invention;

[0058] Fig.11 for Fig.10 Part B is an enlarged schematic diagram;

[0059] Fig.12 for Fig.11 Enlarged schematic diagram of part C;

[0060] Fig.13 It is a three-dimensional schematic diagram of the overall structure of the punching and bag collecting mechanism according to an embodiment of the present invention;

[0061] Fig.14 for Fig.13 Enlarged schematic diagram of part D;

[0062] Fig.15 It is a three-dimensional schematic diagram of the overall structure of the punching device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will be combined with Figure 1-Figure 15 The present invention is further described in detail with reference to the accompanying drawings.

[0064] Reference Figure 1 , Figure 2 , Figure 3 As shown, a packaging bag production line includes a feeding and film placing mechanism 1, a traction sealing and cutting mechanism 2, a punching and bag collecting mechanism 3, and a centralized control module 4. The feeding and film placing mechanism 1, the traction sealing and cutting mechanism 2, and the punching and bag collecting mechanism 3 are sequentially arranged along the conveying direction of the rolled packaging bag, and a bag stacking device 5 is arranged between the traction sealing and cutting mechanism 2 and the punching and bag collecting mechanism 3. The centralized control module 4 is arranged outside the feeding and film placing mechanism 1.

[0065] The film loading and unloading mechanism 1 comprises a fixed base frame 11, a movable frame 12, a feeding shaft 13, a first swing arm 14, a second swing arm 15, a reciprocating mechanism 16, a pair of loading drive mechanisms 17, a pair of limit devices 18, and a pair of shaft retracting devices 19. The outer contour of the movable frame of the embodiment of the present invention is U-shaped.

[0066] The movable frame 12 is reciprocatingly arranged on the fixed base frame 11, and the reciprocating mechanism 16 is arranged between the fixed base frame 11 and the movable frame 12. The reciprocating mechanism 16 drives the movable frame 12 to reciprocate left and right on the fixed base frame 11 to correct the left and right deviation of the film during the discharge process to avoid affecting the processing effect.

[0067] The first swing arm 14 and the second swing arm 15 are respectively arranged at intervals on both sides of the front end of the movable frame 12, and the first swing arm 14 and the second swing arm 15 are respectively provided with a first groove 141 and a second groove 151 on the inner side of the upper end, and the feeding shaft 13 is embedded in the first groove 141 and the second groove 151. The third groove 121 and the fourth groove 122 are respectively provided on the upper side plates in the length direction of the movable frame 12, and the third groove 121 and the fourth groove 122 are respectively close to the first swing arm 14 and the second swing arm 15.

[0068] In the embodiment of the present invention, the first groove, the second groove, the third groove and the fourth groove are in a U shape.

[0069] The first detection device 1A is disposed in the first groove 141 and the second groove 151. The second detection device 1B is disposed in the third groove 121 and the fourth groove 122. The first detection device 1A and the second detection device 1B are electrically connected to the centralized control module 4 respectively.

[0070] Preferably, the first detection device and the second detection device are both electric eyes.

[0071] A pair of feeding drive mechanisms 17 are respectively arranged on both sides of the movable frame 12. The feeding drive mechanism 17 drives the first swing arm 14 and the second swing arm 15 to flip upward, so that the openings of the first groove 141 and the second groove 151 are respectively connected to the upper part of the two side plates in the length direction of the movable frame 12. The feeding shaft 13 moves from the first groove 141 and the second groove 151 to the third groove 121 and the fourth groove 122 under the inertia of the flipping movement of the first swing arm 14 and the second swing arm 15 to complete automatic feeding.

[0072] A pair of limiting devices 18 are respectively disposed above the two side walls of the movable frame 12 in the length direction and are respectively close to the third groove 121 and the fourth groove 122 . The feeding shaft 13 is limited in the third groove 121 and the fourth groove 122 by the pair of limiting devices 18 .

[0073] A pair of shaft retracting devices 19 are respectively arranged on the two outer sides of the movable frame 12 and are respectively close to the third groove 121 and the fourth groove 122. The pair of shaft retracting devices 19 are used to disengage the feeding shaft 13 from the third groove 121 and the fourth groove 122 and move to the first groove 141 and the second groove 151.

[0074] A connecting rod 14A is provided at the lower part between the first swing arm 14 and the second swing arm 15, and the end parts of the connecting rod 14A are respectively fixedly connected to the lower part of the first swing arm 14 and the second swing arm 15. A pair of bearing seats 14A-1 are fixedly connected to the outer periphery of the connecting rod 14A. The pair of bearing seats 14A-1 are respectively arranged at intervals, and the bottoms of the pair of bearing seats 14A-1 are respectively fixedly connected to one side of the movable frame 12, so as to play a guiding and supporting role when the first swing arm and the second swing arm are flipped.

[0075] Recombination Figure 4 , Figure 5 As shown, a pair of limiting sleeves 131 are provided on the outer periphery of both ends of the feed shaft 13, and the limiting sleeves 131 are connected to the outer periphery of the feed shaft 13 through bearings. The limiting sleeves of the embodiment of the present invention are in an H shape in the vertical section. The feed shaft is embedded in the first groove, the second groove or the third groove, the fourth groove through a pair of limiting sleeves.

[0076] In the embodiment of the present invention, the upper sections of the inner side walls of the first groove and the second groove are trumpet-shaped, which is conducive to the pair of limiting sleeves being separated from the first groove and the second groove.

[0077] The feeding drive mechanism 17 includes a single-rod cylinder 171 and a connecting shaft 172. The single-rod cylinder 171 is tilted and fixedly connected to the inner side wall of the movable frame 12 in the length direction. The tilt direction of the single-rod cylinder 171 is tilted toward the connecting rod 14A. The connecting shaft 172 is fixedly connected to the middle part of the second swing arm 15. The connecting shaft 172 and the movable rod of the single-rod cylinder 171 are connected to each other through a joint bearing 173.

[0078] A support frame 123 is provided on the outer side of the movable frame 12, a magnetic powder brake 123-1 is fixedly connected to the outer side of the support frame 123, a driving gear 123-2 is provided between the inner side of the support frame 123 and the outer side of the movable frame 12, the driving gear 123-2 is fixedly connected to the output shaft of the magnetic powder brake 123-1, and one end of the feeding shaft 13 is fixedly connected to a driven gear 13A corresponding to the driving gear 123-2, and the driven gear 13A is meshed with the driving gear 123-2 for transmission. The feeding shaft is intermittently rotated by the magnetic powder brake to realize intermittent conveying of semi-finished packaging bag rolls.

[0079] The limiting device 18 includes a first linear drive device 181, a limiting movable plate 182, and a support mounting block 183. A limiting notch 182-1 corresponding to the limiting sleeve 131 is provided on one side of the bottom surface of the limiting movable plate 182. The limiting notch in the embodiment of the present invention is arc-shaped. The first linear drive device in the embodiment of the present invention is a single-rod cylinder. The first linear drive device 181 is fixedly connected to the upper side plate of the movable frame 12 in the length direction and is spaced from the third groove 121. The support mounting block 183 is fixedly connected to the upper part of the inner side wall in the length direction of the movable frame 12, and is located between the first linear drive device 181 and the third groove 121. A guide block 183-1 is fixedly connected to the upper part of the outer side surface of the support mounting block 183. The guide block 183-1 is opposite to the side plate in the length direction of the movable frame 12 in the upper and lower directions. A guide slot 83-1-1 is provided at the bottom of the guide block 183-1, and the limiting movable plate 182 is slidably arranged in the guide slot 83-1-1.

[0080] The limiting movable plate 182 is fixedly connected to the end of the movable rod of the first linear drive device 181, and the first linear drive device 181 drives the limiting notch 182-1 of the limiting movable plate 182 to approach / move away from the concave position of the limiting sleeve 131. The limiting movable plate limits the vertical displacement of the feeding shaft when rotating in the third groove and the fourth groove.

[0081] Reference Figure 6 As shown, the shaft retracting device 19 includes a second linear drive device 191 and a push bar 192. The second linear drive device in the embodiment of the present invention is a single-rod cylinder. The second linear drive device 191 is fixedly connected to the outer side surface of the movable frame 12 in the length direction. The second linear drive device 191 is tilted toward the second groove 151. The push bar 192 is arranged between the limit sleeve 131 and the second linear drive device 191. The end of one end of the push bar 192 is fixedly connected to the movable rod of the second linear drive device 191.

[0082] The other end of the push bar 192 is provided with an inserting portion 192 - 1 corresponding to the limiting sleeve 131 , and the outer contour of the inserting portion 192 - 1 is in an arch shape.

[0083] Reference Figure 2 As shown, the upper section of one side of the movable frame 12 is provided with a first rubber roller 124, a second rubber roller 125, and a third rubber roller 126. The first rubber roller 124, the second rubber roller 125, and the third rubber roller 126 are arranged in sequence along the conveying direction of the rolled semi-finished packaging bag. The two ends of the first rubber roller 124, the second rubber roller 125, and the third rubber roller 126 are respectively fixedly connected to the side plate in the length direction of the movable frame 12, and the mutual connection method thereof is the existing technology and will not be described here.

[0084] A pair of supports 11A are provided on one side of the fixed base frame 11 along the film conveying direction. The outer contours of the pair of supports 11A are L-shaped, and the inner side surfaces of the pair of supports 11A in the longitudinal direction are fixedly connected to the two outer side surfaces of the fixed base frame 11 in the longitudinal direction.

[0085] Recombination Figure 7 As shown, a support rod 11A-1 and a fourth rubber roller 11A-2 are respectively provided between a pair of supports 11A, the ends of the support rod 11A-1 are fixedly connected to the upper part between the pair of supports 11A, and the ends of the fourth rubber roller 11A-2 are fixedly connected to the middle part between the pair of supports 11A. The rolled packaging bags are sequentially wound around the first rubber roller 124, the second rubber roller 125, the fourth rubber roller 11A-2, and the third rubber roller 126 before being input into the external sealing and cutting machine.

[0086] The reciprocating mechanism 16 includes a third linear drive device 161, a pair of first slide rails 162, a pair of second slide rails 163, and an electric eye 164. The linear drive device in the embodiment of the present invention is an electric push rod. The pair of first slide rails 162 and the pair of second slide rails 163 are respectively longitudinally fixed to the fixed base frame 11 and are spaced apart from each other. The electric eye 164 is fixed to the support rod 11A-1 and is opposite to the third rubber roller 126.

[0087] The third linear drive device 161 is disposed between a pair of first slide rails 162 and a pair of second slide rails 163. The third linear drive device 161 is fixed to the fixed base frame 11. The end of the movable rod of the third linear drive device 161 is fixed to the bottom surface of the movable frame 12. The bottom surface of the movable frame 12 is provided with a pair of first sliders 127 and a pair of second sliders 128 corresponding to the pair of first slide rails 162 and the pair of second slide rails 163. The third linear drive device 161 drives the movable frame 12 to move longitudinally, so that the pair of first sliders 127 and the pair of second sliders 128 slide along the pair of first slide rails 162 and the pair of second slide rails 163, respectively.

[0088] A residual quantity monitoring module 12A is fixedly connected to one side wall in the longitudinal direction of the movable frame 12 . The residual quantity monitoring module 12A is parallel to the feeding shaft 13 arranged on the third groove 121 and the fourth groove 122 , and monitors the residual quantity of the packaging bag roll arranged on the feeding shaft 13 .

[0089] Preferably, the residual detection module is a laser displacement sensor.

[0090] Reference Figure 8 As shown, the centralized control module 4 includes a chassis 41, a display 42, and a communication centralized control module 43. The chassis 41 is arranged on the outside of the cutting slider quality inspection device 2, the display 42 is embedded in the outer surface of the chassis 41, and the communication centralized control module 43 is arranged in the chassis 41. The communication centralized control module 43 and the display 42 are electrically connected to each other.

[0091] The first detection device 1A, the second detection device 1B, the remaining amount monitoring module 12A, the single-rod cylinder 171 , the first linear drive device 181 , the second linear drive device 191 , and the third linear drive device 161 are electrically connected to the communication control module 43 , respectively.

[0092] The communication control module 43 includes a central chip 431, a communication system 432, and an editable logic controller 433. The communication control module of this embodiment as a whole is an existing well-known technology and will not be elaborated here.

[0093] In the initial state, the first swing arm 14 and the second swing arm 15 are flipped downward.

[0094] During operation, after the packaging bag roll is fixed on the feeding shaft 13, the feeding shaft 13 is placed above the first and second swing arms 14 and 15, so that the limit sleeves 131 at both ends of the feeding shaft 13 are respectively placed in the first groove 141 and the second groove 151. When the first detection device 1A detects the feeding shaft 13, it sends a control signal to the communication control module 43, so that the communication control module 432 sends a start control signal to the single-rod cylinder 171. The movable rod of the single-rod cylinder 171 contracts and drives the first swing arm 14 and the second swing arm 15 to flip upward to lift the packaging bag roll off the ground. The feeding shaft 13 rolls into the third groove 121 and the fourth groove 122 under the action of inertia.

[0095] When the limiting sleeve 131 is embedded in the third groove 121 and the fourth groove 122, the second detection device 1B sends a control signal to the communication control module 43, so that the communication control module 43 sends a start control signal to the first linear drive device 181, drives the limiting movable plate 182 to move forward into the limiting sleeve 131, and limits the feeding shaft 13 in the third groove 121 and the fourth groove 122.

[0096] The limiting device is used in conjunction with the limiting sleeve to realize the automatic limiting action of the feeding shaft. Compared with the existing technology, it does not require manual intervention and can be directly modified on the existing equipment, greatly reducing the cost of technical transformation.

[0097] When the packaging bag is wound between the third rubber roller 126 and the electric eye 164, the electric eye 164 aligns with the edge of one side of the packaging bag roll to chase the edge. The electric eye 164 detects and identifies the direction and offset of the left and right movement of the packaging bag roll in real time, and synchronously interacts the data with the communication control module 43. The communication control module 43 calculates and sends a control signal to the third linear drive device 161, so that the movable frame 12 moves relative to the offset direction of the packaging bag roll, preventing the packaging bag roll from deviating due to uneven force during the transmission process, affecting subsequent processing. The deviation correction structure is easy to maintain and has good stability for long-term operation.

[0098] The packaging bag roll is sequentially wound around the first rubber roller 124 , the second rubber roller 125 , the fourth rubber roller 11A- 2 , and the third rubber roller 126 , and then input into the traction sealing and cutting mechanism 2 .

[0099] The remaining amount monitoring module 12A detects the distance between itself and the outermost side of the packaging bag roll in real time, and transmits the detection data to the communication control module 43 for operation. When the packaging bag roll is unloaded (i.e., the threshold set by the remaining amount monitoring module is reached), the communication control module 43 sends operation control signals to the first linear drive device 181, the second linear drive device 191, and the single-rod cylinder 171 in sequence. The working order is as follows:

[0100] 1. The movable rod of the first linear drive device 181 is retracted and reset, so that the limiting movable plate 182 is away from the limiting sleeve 131.

[0101] 2. The movable rod of the second linear drive device 191 extends and moves linearly, so that the insertion portion of the push bar 192 is inserted into the recess of the limiting sleeve 131, and the limiting sleeve 131 is pushed out of the third groove 121 and the fourth groove 122 to the first groove 141 and the second groove 151.

[0102] 3. The movable rod of the single-rod cylinder 171 extends, so that the first and second swing arms 14 and 15 are turned downward and reset, making it convenient for the staff to disassemble and assemble the feeding shaft 13.

[0103] Compared with the existing technology, the fully automatic lifting and automatic separation of the feeding shaft can be realized, which further reduces the production cost and improves the production efficiency, and is more suitable for the fully automatic production line.

[0104] Reference Figure 9-12 As shown, the traction sealing and cutting mechanism 2 includes a bag unfolding mechanism 21, a bag roll conveying mechanism 22, a heat sealing mechanism 23, a point breaking mechanism 24 and an adjustment mechanism 25. The semi-finished rolled packaging bags are clamped and conveyed by the bag roll conveying mechanism 22 and pass through the bag unfolding mechanism 21, the bag roll conveying mechanism 22, the heat sealing mechanism 23 and the point breaking mechanism 24 in sequence.

[0105] The bag unfolding mechanism 21 comprises a first front roller 211, a second front roller 212, a first rear roller 214, a second rear roller 215, and a bag passing plate 213 arranged between the second front roller 212 and the first rear roller 214. The semi-finished rolled packaging bag passes through the bottom of the first front roller 211, the top of the second front roller 212, the bottom of the bag passing plate 213, the top of the first rear roller 214, and the bottom of the second rear roller 215 in sequence to be flattened; a gravity pressure rod 216 is arranged between the second rear roller 215 and the bag roll conveying mechanism 22, and the side wall of one end of the gravity pressure rod 216 flattens the top surface of the semi-finished rolled packaging bag, and the other end of the gravity pressure rod 216 is swingably connected to the second rear roller 215 so that the gravity pressure rod 216 can swing and rise and fall with the lifting and lowering of the semi-finished rolled packaging bag, so that one end of the gravity pressure rod 216 always flattens the top surface of the semi-finished rolled packaging bag.

[0106] The bag roll conveying mechanism 22 includes an upper glue roller 221 and a lower glue roller 222 which are rotatably arranged. The side walls of the upper and lower glue rollers 221 and 222 are closely arranged on one side of the heat sealing mechanism 23 and the point breaking mechanism 24. A plurality of circumferential grooves 223 are arranged on the side walls of the upper and lower glue rollers 221 and 222. A plurality of air blowing pipes 224 extend from one side of the upper and lower glue rollers 221 and 222 through the circumferential grooves 223 to the other side of the upper and lower glue rollers 221 and 222, and the air blowing ports face the heat sealing mechanism 23 and the point breaking mechanism 24. The upper and lower glue rollers 221 and 222 are driven to rotate by a driving device, thereby pulling the semi-finished rolled packaging bags through the bag unfolding mechanism 21 and pushing the semi-finished rolled packaging bags into the heat sealing mechanism 23. The air blowing pipes 224 are connected to an external air blowing device (not shown in the figure).

[0107] The heat sealing mechanism 23 includes a heat sealing knife 232 and a first bottom plate 231. The heat sealing knife 232 can be raised and lowered above the semi-finished rolled packaging bag. The first bottom plate 231 is arranged below the semi-finished rolled packaging bag and overlaps with the projection of the heat sealing knife 232. A heating tube 232-1 is arranged in the heat sealing knife 232 to keep the heat sealing knife 232 at a high temperature to heat-seal the semi-finished rolled packaging bag.

[0108] The point breaking mechanism 24 comprises a point breaking knife 242, a second bottom plate 241 and a bag pressing knife 243. The second bottom plate 241 is arranged adjacent to the first bottom plate 231. The point breaking knife 242 can be lifted and lowered between the first and second bottom plates 231 and 241 with the cutting edge facing the semi-finished rolled packaging bag. The bag pressing knife 243 can be lifted and lowered above the semi-finished rolled packaging bag. The bottom surface of the bag pressing knife 243 has a recess 243-1 for the cutting edge of the point breaking knife 242 to extend into. The two ends of the bag pressing knife 243 on both sides of the recess 243-1 are respectively located above the first and second bottom plates 231 and 241, so that the semi-finished rolled packaging bag is pressed tightly between the first and second bottom plates 231 and 241 when the bag pressing knife 243 descends. The bag pressing knife 243 and the point breaking knife 242 are driven to lift and lower by conventional driving devices such as cylinders and motors.

[0109] The adjustment mechanism 25 includes first and second heat sealing knife adjustment mechanisms 2501 and 2502 and first and second bag pressing knife adjustment mechanisms 2503 and 2504 .

[0110] The first heat sealing knife adjustment mechanism 2501 includes a screw rod 252, a nut 253, a sleeve 254, an upper tube positive block 256, a lower tube positive block 255 and a spring 257. A crossbeam 251 is provided above the heat sealing knife 232 and the bag pressing knife 243 so as to be liftable. The sleeve 254 is fixedly connected to the top surface of the crossbeam 251. The crossbeam 251 has a through hole for the screw rod 252 to pass through. The sleeve 254 has a cavity 254-1 with an opening toward the through hole. The upper end of the screw rod 252 is slidably inserted into the through hole and extends into the cavity 254-1. The nut 253 is threadedly connected to the upper end of the screw rod 252. Since the width of the nut 253 is greater than the through hole, the screw rod 252 cannot be moved downward. The upper end of the screw rod 252 cannot leave the cavity 254-1 downwardly, and the lower end of the screw rod 252 is fixedly connected to the heat sealing knife 232 through the connecting block. The lower tube positive block 255 is slidably mounted on one end of the screw rod 252 located in the cavity 254-1. The screw rod 252 has a boss 252-1 below the lower tube positive block 255 so that when the screw rod 252 rises, the lower tube positive block 255 rises accordingly. The upper tube positive block 256 is arranged above the screw rod 252 in the cavity 254-1, and a spring 257 is arranged between the upper and lower tube positive blocks 256 and 255. The cavity 254-1 has a top wall 254-2 so that the upper tube positive block 256 cannot leave the cavity 254-1 upwardly.

[0111] The first and second heat sealing knife adjustment mechanisms 2501, 2502 and the first and second bag pressing knife adjustment mechanisms 2503, 2504 have the same structure, and the first and second heat sealing knife adjustment mechanisms 2501, 2502 and the sliding sleeves 254 of the first and second heat sealing knife adjustment mechanisms 2503, 2504 are fixed to the crossbeam 251. The screw rods 252 of the first and second heat sealing knife adjustment mechanisms 2501, 2502 are respectively connected to two different positions on the heat sealing knife 232, and the screw rods 252 of the first and second bag pressing knife adjustment mechanisms 2503, 2504 are respectively connected to two different positions on the bag pressing knife 243.

[0112] The driving device drives the cross beam 251 to rise and fall, and links the heat sealing knife 232 and the bag pressing knife 243 to rise and fall synchronously. Conventional driving devices such as motors and cylinders, and conventional reciprocating motion mechanisms such as crank slider mechanisms can be used.

[0113] When the driving device drives the cross beam 251 to descend, the linked heat sealing knife 232 descends, and the heat sealing knife 232 presses the semi-finished rolled packaging bag on the first bottom plate 231. Then the cross beam 251 continues to descend, and the linked sliding sleeve 254 continues to descend. At this time, the heat sealing knife 232 is supported by the first bottom plate 231 and cannot continue to descend, so that the end of the screw 252 in the cavity 254-1 cannot descend, which is equivalent to the upper end of the screw 252 relative to the cavity 254. -1 rises, as the cross beam 251 links the sliding sleeve 254 to continue to descend, the boss 252-1 on the screw rod 252 pushes the lower tube positive block 255 to rise relative to the cavity 254-1 until the upper tube positive block 256 contacts the top wall 254-2 of the cavity 254-1. At this time, the cross beam 251 continues to descend, and the top wall 254-2 presses the upper tube positive block 256 and squeezes the spring 257. At this time, the elastic force of the spring 257 is the pressing force of the heat sealing knife 232.

[0114] By adjusting the nut 253, the initial height of the screw rod 252 can be adjusted. When the initial height of the screw rod 252 is higher, the compression amplitude of the spring 257 is larger, the elastic force is larger, and the pressing force of the heat sealing knife 232 is larger; when the initial height of the screw rod 252 is lower, the compression amplitude of the spring 257 is smaller, the elastic force is smaller, and the pressing force of the heat sealing knife 232 is smaller, thereby the pressing force of the heat sealing knife 232 can be adjusted.

[0115] The overall structure of the bag stacking device 5 in this embodiment is consistent with the prior art document (China Patent Publication No. CN210553337U), and will not be elaborated here.

[0116] Reference Figure 1 , Fig.13As shown, the punching and bag collecting mechanism 3 includes a punching and bag collecting frame 31, a punching device 32, a clamping device 33, and a conveying device 34. A clamping device transmission mechanism 35 is arranged on both sides of the punching and bag collecting frame 31 in the length direction. The punching device 32 is arranged in the middle of the punching and bag collecting frame 31, and the conveying device 34 is arranged at the end of the punching and bag collecting frame 31. The clamping device transmission mechanism 35 drives the clamping device 33 to clamp the packaging bag at the bag stacking device 5, punches the packaging bag through the punching device 32, and then clamps it on the conveying device 34.

[0117] The conveying device 34 in this embodiment is a flat conveyor belt machine.

[0118] The transmission mechanism 35 of the clamping device in this embodiment is a conventional synchronous belt transmission mechanism, which will not be described here.

[0119] Recombination Fig.14 As shown, the clamping device 33 includes a movable plate 331, a plurality of guide support plates 332, a plurality of movable pressure rods 333, and a plurality of pressure rod driving devices 334. The movable plate 331 is longitudinally arranged in the punching and bag collecting frame 31, and both sides of the movable plate 331 are respectively connected to the clamping device transmission mechanism 35 located on both sides of the length direction of the punching and bag collecting frame 31.

[0120] A plurality of guide support plates 332 are disposed on the movable plate 331 at intervals.

[0121] A plurality of movable pressure rods 333 are rotatably arranged above a plurality of guide support plates 332, a connecting portion 333-1 is arranged on the top surface of the end of the movable pressure rod 333, a plurality of pressure rod driving devices 334 are fixedly connected to the movable plate 331, the movable pressure rod 333 of the pressure rod driving device 334 is fixedly connected to the connecting portion 333-1, and the end of the movable pressure rod 333 and the middle part of the surface of the guide support plate 332 are connected to each other through a rotating shaft.

[0122] A plurality of pressure rod driving devices 334 drive a plurality of movable pressure rods 333 to flip up and down, so that the bottom surface of the head end of the movable pressure rod 333 approaches / moves away from the surface of the head end of the guide support plate 332, and a rubber column 333-2 is arranged on the bottom surface of the head end of the movable pressure rod 333.

[0123] The pressure rod driving device 334 of this embodiment is a horizontal bar cylinder.

[0124] Reference Fig.15 As shown, the punching device 32 includes a punching cylinder 321, a cutting part 322, and a rotating platform 323. The punching cylinder 321 is vertically fixed to the top of the punching and bag collecting frame 31, the cutting part 322 is fixed to the end of the movable pressure rod 333 of the punching cylinder 321, and the rotating platform 323 is rotatably arranged below the cutting part 322. The rotating platform 323 is driven to rotate by a platform rotation driving device.

[0125] The platform rotation driving device is a conventional driving device such as a rotary cylinder, a motor, etc. to drive the rotation.

[0126] Recombination Figure 1 , Fig.13 As shown, the top surface of the rotating platform 323 is higher than the top surface of the conveying device 34 , preventing the packaging bags on the conveying device 34 from interfering with the linear reciprocating motion of the clamping device 33 above the bag stacking device 5 and the conveying device 34 .

[0127] Reference Figure 1 , Fig.15 As shown, a bag passing platform 324 is provided between the rotating platform 323 and the bag stacking device 5, and the top surface of the bag passing platform 324 is flush with the top surface of the rotating platform 323. The surface of the bag passing platform 324 at one end adjacent to the bag stacking device 5 is used to support the stacked packaging bags. The top surface of the bag passing platform 324 is provided with a plurality of strip-shaped through holes 324-1 corresponding to a plurality of guide support plates 332, so that the front end of the guide support plates 332 can scoop up the bottom of the stacked packaging bags arranged on the rotating platform 323.

[0128] The usage of the plastic bag punching machine is as follows:

[0129] 1. The movable plate 331 moves forward to the end of the bag passing platform 324 under the action of the clamping device transmission mechanism 35. At this time, the guide support plate 332 scoops up the stacked packaging bags under the action of the movable plate 331 moving forward, and the pressure rod driving device 334 drives the movable pressure rod 333 to rotate clockwise, so that the rubber column 333-2 moves downward and presses. At this time, the packaging bag is clamped between the guide support plate 332 and the rubber column 333-2;

[0130] 2. The clamped packaging bag moves backward as a whole through the clamping device transmission mechanism 35, reaches the punching device 32, and is placed on the rotating platform 323;

[0131] 3. The punching cylinder 321 drives the cutting part 322 to move downward to punch holes in the packaging bag (punch out handle holes). While punching, the rotating cylinder reciprocates. During the punching process, the rotating platform 323 reciprocates to effectively reduce the impact caused by the punching.

[0132] 4. After the punching is completed, the packaging bag is clamped by the robot and continues to move backward as a whole through the clamping device transmission mechanism 35. Then, the pressure rod driving device 334 is reset, so that the clamped packaging bag is released and placed on the conveying device 34 to be conveyed to the next process for processing.

[0133] The punching and bag collecting mechanism has high working efficiency, high processing accuracy, low error rate, and greatly reduces labor costs, and is suitable for large-scale promotion and application.

[0134] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any modifications made according to the spirit of the main technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A packaging bag production line, characterized in that: include: A material feeding and film placing mechanism, the material feeding and film placing mechanism comprises a fixed base frame, a movable frame, a first swing arm, a second swing arm, a reciprocating motion mechanism, a pair of material feeding drive mechanisms, a pair of limit devices, and a pair of shaft retracting devices. The movable frame is movably arranged on the fixed base frame, and the reciprocating motion mechanism drives the movable frame to reciprocate left and right on the fixed base frame; The first and second swing arms are respectively arranged at intervals on both sides of the front end of the movable frame, the first swing arm and the second swing arm are respectively provided with a first groove and a second groove on the top of one end, and the third and fourth grooves are respectively provided on the upper sides of the two side plates in the length direction of the movable frame, the pair of limit devices are respectively provided on the two side walls in the length direction of the movable frame, the pair of shaft withdrawal devices are respectively provided on the two outer sides of the movable frame, and the side walls in the length direction of the movable frame are provided with a residual monitoring module, and the residual monitoring module monitors the residual amount of the rolled packaging bag located on the third and fourth grooves, the first and second grooves are both provided with a first detection device, and the third and fourth grooves are both provided with a second detection device; The traction sealing and cutting mechanism, the feeding drive mechanism drives the first and second swing arms to flip upward, so that the packaging bag roll moves from the first and second grooves to the third and fourth grooves, and then the rolled packaging bag is conveyed to the traction sealing and cutting mechanism through the guide rollers on the fixed bottom frame and the movable frame. The traction sealing and cutting mechanism includes a heat sealing mechanism, a point breaking mechanism, and a bag roll conveying mechanism. The heat sealing mechanism includes a heat sealing knife and a first bottom plate. The heat sealing knife can be lifted and lowered above the semi-finished rolled packaging bag, and the first bottom plate is arranged below the semi-finished rolled packaging bag. The point-breaking mechanism comprises a point-breaking knife, a second bottom plate and a bag pressing knife. The second bottom plate is arranged adjacent to the first bottom plate. The point-breaking knife can be lifted between the first and second bottom plates with the cutting edge facing the semi-finished rolled packaging bag. The bag pressing knife can be lifted above the semi-finished rolled packaging bag with both ends respectively overlapping with the projections of the first and second bottom plates. The bag roll conveying mechanism is used to convey the semi-finished rolled packaging bag to move into the heat sealing mechanism and the point-breaking mechanism. The heat sealing knife, the point-breaking knife and the bag pressing knife are driven to lift by the driving mechanism. A punching and bag collecting mechanism, wherein a bag stacking device is arranged between the traction and sealing cutting mechanism and the punching and bag collecting mechanism, and the independent packaging bags output by the traction and sealing cutting mechanism are stacked between the traction and sealing cutting mechanism and the punching and bag collecting mechanism through the bag stacking device, and the punching and bag collecting mechanism comprises a punching device, a clamping device, and a conveying device, and the clamping device clamps the packaging bags at the bag stacking device, punches them through the punching device, and then clamps them on the conveying device; A centralized control module, wherein the centralized control module is arranged outside the feeding and film placing mechanism, and the feeding drive mechanism, the residual quantity monitoring module, the first detection device, the second detection device, the limit device, and the shaft retracting device are electrically connected to the centralized control module respectively; When the first detection device detects the packaging bag roll, it sends a control signal to the centralized control module, so that the centralized control module sends a start control signal to the feeding drive mechanism, driving the first swing arm and the second swing arm to flip upward and move the packaging bag roll into the third and fourth grooves; When the second detection device detects the packaging bag roll, it sends a control signal to the centralized control module, so that the centralized control module sends a start control signal to the limiting device, and the packaging bag roll is limited to the third and fourth grooves by the limiting device; The remaining amount monitoring module detects the distance between itself and the outermost side of the packaging bag roll in real time, and transmits the detection data to the centralized control module for operation. When the packaging bag roll is unloaded, the centralized control module sends a start control signal to the limit device, the shaft retraction device, and the feeding drive mechanism in turn. The limit device is reset, and the shaft retraction device drives the packaging bag roll to disengage from the third and fourth grooves and move into the first and second grooves. The first and second swing arms flip downward and reset.

2. The packaging bag production line according to claim 1, characterized in that: The feeding and film placing mechanism also includes a feeding shaft, a pair of limiting sleeves are arranged on the outer periphery of both ends of the feeding shaft, the feeding shaft is embedded in the first groove, the second groove or the third groove, the fourth groove through the pair of limiting sleeves, a magnetic powder brake is arranged on an outer side surface of the movable frame, and one end of the feeding shaft is drivingly connected to the magnetic powder brake; A connecting rod is arranged at the lower part between the first swing arm and the second swing arm, and the outer periphery of the connecting rod is connected to the movable frame via a bearing seat; the feeding drive mechanism comprises a single-rod cylinder and a connecting shaft, the single-rod cylinder is obliquely arranged on the inner side wall in the length direction of the movable frame, the inclination direction of the single-rod cylinder is inclined in the direction of the connecting rod, the connecting shaft is arranged on the first swing arm, the movable rod of the single-rod cylinder is fixedly connected to the connecting shaft, and the single-rod cylinder drives the first swing arm to flip.

3. The packaging bag production line according to claim 2, characterized in that: The limiting device includes a first linear drive device, a limiting movable plate, and a support mounting block. A limiting notch corresponding to the limiting sleeve is provided on one side of the bottom surface of the limiting movable plate. The first linear drive device is arranged above a side plate in the length direction of the movable frame and is spaced apart from the third groove. The supporting mounting block is arranged on the upper part of the inner side wall in the length direction of the movable frame and is located between the first linear drive device and the third groove. A guide block is provided on the upper part of the outer side surface of the supporting mounting block. The guide block is opposite to the side plate in the length direction of the movable frame up and down. A guide slot is provided at the bottom of the guide block. The first linear drive device drives the limiting movable plate to slide along the guide slot to make the limiting notch approach / move away from the limiting sleeve.

4. The packaging bag production line according to claim 3, characterized in that: The shaft retracting device comprises a second linear drive device and a push bar, wherein the second linear drive device is obliquely arranged on the outer side surface in the length direction of the movable frame, the inclination direction of the second linear drive device is inclined toward the first groove, and the push bar is arranged between the limiting sleeve and the second linear drive device; The end of the other end of the pushing bar is provided with an inserting portion corresponding to the limiting sleeve, and the second linear driving device drives the inserting portion to be inserted into the limiting sleeve; The upper section of one side of the movable frame is provided with a first rubber roller, a second rubber roller, and a third rubber roller, and the first rubber roller, the second rubber roller, and the third rubber roller are arranged in sequence along the conveying direction of the film; A pair of supports is provided on one side of the fixed base frame along the film conveying direction, the outer contour of the pair of supports is L-shaped, and the inner side surfaces in the length direction of the pair of supports are respectively fixedly connected to the two outer side surfaces in the length direction of the fixed base frame; A support rod and a fourth rubber roller are respectively arranged between the pair of supports, the ends of both ends of the support rod are arranged at the upper part between the pair of supports, and the ends of both ends of the fourth rubber roller are arranged at the middle part between the pair of supports, and the film is wound around the first rubber roller, the second rubber roller, the fourth rubber roller and the third rubber roller in sequence.

5. The packaging bag production line according to claim 4, characterized in that: The reciprocating motion mechanism includes a third linear drive device, a pair of first slide rails, a pair of second slide rails, and an electric eye. The pair of first slide rails and the pair of second slide rails are respectively longitudinally arranged on the fixed base frame and are spaced apart from each other. The electric eye is movably arranged on the support rod, and the electric eye is opposite to the third rubber roller. The third linear drive device is disposed between the pair of first slide rails and the pair of second slide rails; The bottom surface of the movable frame is provided with a pair of first sliders and a pair of second sliders corresponding to the pair of first slide rails and the pair of second slide rails. The third linear drive device drives the movable frame to move longitudinally, so that the pair of first sliders and the pair of second sliders slide along the pair of first slide rails and the pair of second slide rails respectively.

6. The packaging bag production line according to claim 5, characterized in that: The traction sealing and cutting mechanism also includes a heat sealing knife adjustment mechanism, which includes a screw, a nut, a sliding sleeve, an upper tube positive block, a lower tube positive block and a spring. A cross beam is arranged above the heat sealing knife so as to be liftable. The sliding sleeve is fixedly connected to the cross beam. The cross beam has a through hole for the screw to pass through. The sliding sleeve has a cavity with an opening facing the through hole. The upper end of the screw is slidably inserted into the through hole and extends into the cavity. The nut is threadedly connected to the upper end of the screw so that the upper end of the screw cannot leave the cavity downward. The lower end of the screw is fixedly connected to the heat sealing knife. The lower tube positive block is slidably sleeved on one end of the screw located in the cavity. The upper tube positive block is arranged above the screw in the cavity. A spring is arranged between the upper and lower tube positive blocks. The cavity has a top wall so that the upper tube positive block cannot leave the cavity upward. The screw has a boss below the lower tube positive block so that when the screw is raised, the lower tube positive block rises accordingly. The crossbeam is also provided with a bag pressing knife adjusting mechanism, which has the same structure as the heat sealing knife adjusting mechanism, and the lower end of the screw of the bag pressing knife adjusting mechanism is fixedly connected to the bag pressing knife; The heat sealing knife adjustment mechanism comprises first and second heat sealing knife adjustment mechanisms with the same structure arranged on the crossbeam; The bag pressing knife adjusting mechanism comprises first and second bag pressing knife adjusting mechanisms with the same structure which are arranged on the crossbeam.

7. The packaging bag production line according to claim 6, characterized in that: The bag roll conveying mechanism includes an upper rubber roller and a lower rubber roller which are rotatably arranged. The side walls of the upper rubber roller and the lower rubber roller are closely arranged on one side of the heat sealing mechanism and the point-breaking mechanism. A plurality of circumferential grooves are arranged on the side walls of the upper rubber roller and / or the lower rubber roller. A plurality of air blowing pipes extend from one side of the upper rubber roller and the lower rubber roller through the circumferential grooves to the other side of the upper rubber roller and the lower rubber roller, and the air blowing ports face the heat sealing mechanism and the point-breaking mechanism. The upper rubber roller and / or the lower rubber roller are driven to rotate by a driving device, and the air blowing pipes are connected to an air blowing device.

8. The packaging bag production line according to claim 7, characterized in that: The bag roll conveying mechanism also includes a bag unfolding mechanism, the semi-formed bag roll first passes through the bag unfolding mechanism and then is conveyed to the heat sealing mechanism and the point breaking mechanism through the bag roll conveying mechanism, the bag unfolding mechanism includes a front roller, a rear roller and a bag passing plate arranged between the front and rear rollers, and the semi-formed bag roll passes through the top surface of the front roller, the bottom surface of the bag passing plate and the top surface of the rear roller in sequence to be flattened; The bag unfolding mechanism also includes a gravity pressure rod arranged between the rear drum and the bag roll conveying mechanism, and the side wall of one end of the gravity pressure rod flattens the top surface of the semi-formed bag roll, and the other end of the gravity pressure rod is swingably arranged so that the gravity pressure rod can swing and rise and fall with the rise and fall of the semi-formed bag roll, so that one end of the gravity pressure rod flattens the top surface of the semi-formed bag roll at all times.

9. The packaging bag production line according to claim 8, characterized in that: The punching and bag collecting mechanism also includes a punching and bag collecting frame and a clamping device transmission mechanism arranged on both sides of the punching and bag collecting frame in the length direction, the punching device is arranged in the middle of the punching and bag collecting frame, and the clamping device transmission mechanism drives the clamping device to reciprocate in the punching and bag collecting frame along the conveying direction of the packaging bag; The punching device comprises a punching cylinder, a movable rod of the punching cylinder is provided with a cutting portion, and the punching cylinder is fixedly arranged above the punching and bag collecting machine frame; A rotating part is provided below the cutting part. The rotating part comprises a rotating platform. The rotating platform is driven to rotate by a platform rotating driving device.

10. The packaging bag production line according to claim 9, characterized in that: The clamping device includes a movable plate, a plurality of guide support plates, a plurality of movable pressure rods, and a plurality of pressure rod driving devices. The movable plate is longitudinally arranged in the punching and bag collecting machine frame, and both sides of the movable plate are transmission-connected with the transmission mechanism of the clamping device. The plurality of guide support plates are arranged on the movable plate at intervals, and the plurality of guide support plates are opposite to the bag stacking device. The plurality of movable pressure rods are respectively movably arranged above the plurality of guide support plates, and the plurality of pressure rod driving devices drive the plurality of movable pressure rods to flip up and down, so that the movable pressure rods are close to / away from the surface of the guide support plates.

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