Automatic production line of kraft paper bag making machine

Abstract

The utility model discloses an automatic production line of a kraft paper bag making machine, which comprises an unwinding mechanism capable of outputting bottom-layer kraft paper, middle-layer honeycomb paper and top-layer kraft paper; the first glue spraying mechanism can be pressed to form a paper tape; the first transverse sealing mechanism can form a plurality of first transverse sealing edges on the paper tape; the side sealing mechanism can form a side sealing edge on the paper tape; a second glue spraying mechanism; the folding mechanism can be used for symmetrically folding the paper tape; the sealing mechanism can seal the side edge, far away from the crease, of the paper tape; a second transverse sealing mechanism; and the cutting mechanism can cut a plurality of kraft paper bags. The paper bag processing device has the advantages that raw materials to be processed are continuously processed through reasonable mechanism arrangement to obtain finished paper bags, processing of all steps in the process can be carried out synchronously, waiting time is saved, the procedure for transferring the materials among all the steps is omitted, the fatigue degree of workers is reduced, and the production efficiency is improved. And the production efficiency of paper bags is improved, and the personnel investment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kraft paper bag making, and specifically relates to an automated production line for a kraft paper bag making machine. Background Art

[0002] A kraft paper bag is formed by a bottom wall and a peripheral wall surrounding to form a bag-like structure with an opening. Its bottom wall and peripheral wall are composed of multiple layers of paper materials, generally including a bottom-layer kraft paper, a middle-layer honeycomb paper, and a top-layer kraft paper stacked in sequence from bottom to top.

[0003] In the prior art, the preparation steps of paper bags are cumbersome and the various preparation steps are not continuous, resulting in high labor intensity of workers and thus affecting the production capacity of paper bags. Summary of the Utility Model

[0004] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the utility model is to provide an automated production line for a kraft paper bag making machine.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] An automated production line for a kraft paper bag making machine, comprising:

[0007] A unwinding mechanism capable of outputting a bottom-layer kraft paper, a middle-layer honeycomb paper, and a top-layer kraft paper;

[0008] A first glue spraying mechanism, including a glue coating structure and a pressing structure arranged in sequence along the conveying direction; the glue coating structure can coat glue on one side of the bottom-layer kraft paper and the top-layer kraft paper close to the middle-layer honeycomb paper; the pressing structure acts on the bottom-layer kraft paper, the middle-layer honeycomb paper, and the top-layer kraft paper, and can press and form a paper tape;

[0009] A first transverse sealing mechanism, arranged at the discharge end of the pressing structure, acting on the paper tape along the width direction of the paper tape, and capable of forming a number of first transverse sealing edges on the paper tape;

[0010] A side sealing mechanism, arranged at the discharge end of the first transverse sealing mechanism, acting on the paper tape along the length direction of the paper tape, and capable of forming a side sealing edge on the paper tape;

[0011] A second glue spraying mechanism, arranged at the discharge end of the side sealing mechanism, acting on the paper tape along the width direction of the paper tape, and capable of forming a transverse glue strip corresponding to the first transverse sealing edge;

[0012] A folding mechanism, arranged at the discharge end of the second glue spraying mechanism, acting on the paper tape along the width direction of the paper tape, and capable of symmetrically folding the paper tape;

[0013] A sealing mechanism, arranged at the discharge end of the folding mechanism, acting on the folded paper tape along the length direction of the paper tape, and capable of sealing the side of the paper tape away from the crease;

[0014] The second transverse sealing mechanism is arranged at the discharging end of the sealing mechanism and acts on the folded paper tape in the width direction of the paper tape, and can form a second transverse sealing edge corresponding to the transverse rubber strip.

[0015] The cutting mechanism is arranged at the discharging end of the second transverse sealing mechanism and acts on the second transverse sealing edge in the width direction of the paper tape, and can cut out a plurality of kraft paper paper bags.

[0016] Preferably, it further includes:

[0017] The stacking mechanism is arranged at the discharging end of the cutting mechanism and can stack a plurality of kraft paper paper bags in the vertical direction to form a stack of paper bags.

[0018] Preferably, it further includes:

[0019] The bundling mechanism is arranged at the discharging end of the stacking mechanism and includes a wire bundling structure and a pushing structure. The wire bundling structure can bundle wires on the stack of paper bags, and the pushing structure acts on the bundled stack of paper bags to realize blanking.

[0020] Preferably, it further includes:

[0021] The traction mechanism is arranged between the side sealing mechanism and the second spraying glue mechanism and / or between the second transverse sealing mechanism and the cutting mechanism, and can continuously provide traction force for the paper tape.

[0022] Preferably, it further includes:

[0023] The frame has an assembly space at the bottom and a first platform at the top. The unwinding mechanism is arranged in the assembly space, and the first spraying glue mechanism, the first transverse sealing mechanism and the side sealing mechanism are sequentially arranged on the first platform along the conveying direction;

[0024] The guiding structure is arranged on the first platform and can guide the bottom kraft paper, the middle honeycomb paper and the top kraft paper located in the assembly space to the feeding end of the first spraying glue mechanism respectively.

[0025] Preferably, the unwinding mechanism includes:

[0026] The first frame is arranged in the assembly space and includes a pair of first clamping arms that can be opened and closed, a first support shaft for fixing the bottom kraft paper coil, and a first unwinding drive. The bottom end of the first clamping arm is provided with a rotatable first gear and a pair of rotatable first supporting wheels. The end of the first support shaft is provided with a second gear meshed with the first gear. The pair of first supporting wheels can continuously provide an upward supporting force for the first support shaft, and the output end of the first unwinding drive is in transmission connection with the first gear;

[0027] The second frame is disposed within the assembly space and is used to provide the middle honeycomb paper, having the same structure as the first frame;

[0028] The third frame is disposed within the assembly space and is used to provide the top kraft paper, having the same structure as the first frame.

[0029] Preferably, the guiding structure includes:

[0030] The first guiding roller is disposed on the first platform and is used to guide the top kraft paper;

[0031] The second guiding roller is disposed on the first platform and is used to guide the middle honeycomb paper;

[0032] The third guiding roller is disposed on the first platform and is used to guide the bottom kraft paper;

[0033] The glue coating structure includes:

[0034] The first paper passing part is docked with the first frame through the first guiding roller, and is provided with a first glue spraying member, and the first glue spraying member can spray glue on the inner side of the top kraft paper;

[0035] The second paper passing part is docked with the second frame through the second guiding roller;

[0036] The third paper passing part is docked with the third frame through the third guiding roller, and is provided with a third glue spraying member, and the third glue spraying member can spray glue on the inner side of the bottom kraft paper;

[0037] The pressing structure includes an upper pressing roller and a lower pressing roller disposed at the discharge end of the glue coating structure, and the top kraft paper, the middle honeycomb paper and the bottom kraft paper pass through the gap between the upper pressing roller and the lower pressing roller and are pressed together to form a paper tape.

[0038] Preferably, the first transverse sealing mechanism includes:

[0039] The first support is spanned across the first platform in the width direction of the paper tape;

[0040] The first hot pressing roller has a first heating structure and is rotatably disposed on the first support;

[0041] The second hot pressing roller has a second heating structure and is rotatably disposed on the first support and can form a gap for the paper tape to pass through with the first hot pressing roller;

[0042] The first hot pressing drive is disposed on the first platform, and the output end is in transmission connection with the first hot pressing roller and the second hot pressing roller;

[0043] When the paper tape passes through the gap, the first hot pressing roller acts on the top surface of the paper tape and the second hot pressing roller acts on the bottom surface of the paper tape. As the paper tape is conveyed, a plurality of the first transverse edge seals arranged at equal intervals along the length direction of the paper tape can be formed.

[0044] Preferably, the side sealing mechanism comprises:

[0045] A base, arranged on the first platform, provided with a first conveying device acting on the bottom surface of the paper tape;

[0046] A top seat, connected to the base in a liftable manner in the thickness direction of the paper tape;

[0047] The left wheel group acts on the left side of the paper tape along the length direction of the paper tape, and includes a lower slider, an upper slider and a left hot pressing drive; the lower slider is slidably connected to the base in the width direction of the paper tape, and the lower slider is provided with a plurality of first hot pressing wheels and at least one first cold pressing wheel along the conveying direction of the paper tape; the upper slider is slidably connected to the top seat in the width direction of the paper tape, and the upper slider is provided with a plurality of second hot pressing wheels and at least one second cold pressing wheel along the conveying direction of the paper tape, and a gap can be formed between the first hot pressing wheel and the second hot pressing wheel, and between the first cold pressing wheel and the second cold pressing wheel for the paper tape to pass through; the left hot pressing drive is arranged on the base, and the output end is transmission-connected with the first hot pressing wheel and the first cold pressing wheel;

[0048] The right wheel group acts on the right side of the paper tape along the length direction of the paper tape, and has the same structure as the left wheel group;

[0049] When the paper tape passes through the gap, the first hot pressing wheel and the first cold pressing wheel act on the bottom surface of the paper tape, and the second hot pressing wheel and the second cold pressing wheel act on the top surface of the paper tape. As the paper tape is transported, a side seal can be formed on the left side of the paper tape.

[0050] Preferably, it also includes:

[0051] The second platform is provided with a second conveying device acting on the paper tape, and the second glue spraying mechanism is arranged on the second platform;

[0052] The first machine, the feeding end of the second platform is connected to the feeding end of the first platform, and the discharging end is connected to the feeding end of the first machine; the folding mechanism is arranged at the feeding end of the first machine, and the sealing mechanism is arranged at the discharging end of the first machine;

[0053] The third platform has a feeding end connected to the discharging end of the first machine, the second transverse sealing mechanism is arranged at the feeding end of the third platform, and the cutting mechanism is arranged at the discharging end of the third platform.

[0054] The working process of the present utility model is as follows: Three raw material rolls sequentially pass through the first glue spraying mechanism, the first transverse sealing mechanism, the side sealing mechanism, the second glue spraying mechanism, the folding mechanism, the sealing mechanism, the second transverse sealing mechanism, and the cutting mechanism to form a number of independent paper bags; First, the raw material rolls (including two rolls of kraft paper and one roll of honeycomb paper) are installed on the unwinding mechanism and output to the first glue spraying mechanism through the unwinding mechanism. The gluing structure and the pressing structure act on the raw materials successively, and the three raw materials are compounded into a paper tape with a three-layer structure; When the paper tape passes through the first transverse sealing mechanism, a number of first transverse sealing edges can be formed in the length direction of the paper tape, and the distance between adjacent first transverse sealing edges is the width of a single paper bag. The composite paper tape is initially reinforced in the transverse direction through the first transverse sealing edges; When the paper tape passes through the side sealing mechanism, two side sealing edges can be formed in the length direction of the paper tape, and the two side sealing edges and the two adjacent first transverse sealing edges mentioned above are closed to form the boundary of the unfolded area of a single paper bag. The composite paper tape is initially reinforced in the length direction through the side sealing edges; When the paper tape passes through the second glue spraying mechanism, glue can be coated on the top surface of the paper tape corresponding to the position of the first transverse sealing edge, and a number of transverse glue strips arranged along the length direction of the paper tape can be formed. The transverse glue strips are used to pre-fix the folded paper tape; When the paper tape with transverse glue strips on the top surface passes through the folding mechanism, it can be symmetrically folded along the center line (length direction) of the paper tape. When folding, the transverse glue strips are folded synchronously to achieve bonding and fixation; When the folded paper tape passes through the sealing mechanism, the two side sealing edges can be sealed, thereby realizing the cavity of the bag body; When the sealed paper tape passes through the second transverse sealing device, the second transverse sealing device acts on the aforementioned transverse glue strips to achieve secondary fixation, forming a number of second transverse sealing edges, and between adjacent second transverse sealing edges is a single paper bag; Finally, the cutting mechanism acts on the aforementioned second transverse sealing edges, thereby cutting out a number of independent paper bags.

[0055] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through reasonable mechanism arrangement, the raw materials to be processed are continuously processed to obtain finished paper bags. The processing of each step in the process can be carried out synchronously, saving the waiting time and the process of transferring materials between each step, which is beneficial to reducing the fatigue degree of personnel, thereby improving the production efficiency of paper bags and reducing the personnel input cost. Description of the Drawings

[0056] Figure 1 It is a schematic structural diagram of an embodiment in the present utility model;

[0057] Figure 2 It is a schematic structural diagram of the unwinding mechanism of an embodiment in the present utility model;

[0058] Figure 3 It is a schematic structural diagram of the first glue spraying mechanism of an embodiment in the present utility model;

[0059] Figure 4Structural schematic diagram of the first transverse sealing mechanism in the embodiments of the present utility model;

[0060] Figure 5 Structural schematic diagram of the side sealing mechanism in the embodiments of the present utility model;

[0061] Figure 6 Structural schematic diagram of the folding mechanism in the embodiments of the present utility model;

[0062] Figure 7 Structural schematic diagram of the sealing mechanism in the embodiments of the present utility model;

[0063] Figure 8 Structural schematic diagram of the stacking mechanism in the embodiments of the present utility model.

[0064] As shown in the figure:

[0065] 1 - Unwinding mechanism, 11 - First frame, 111 - First clamping arm, 112 - First support shaft;

[0066] 2 - First glue spraying mechanism, 21 - Glue coating structure, 211 - First paper passing part, 212 - Second paper passing part, 213 - Third paper passing part, 22 - Pressing structure, 221 - Upper pressing roller, 222 - Lower pressing roller;

[0067] 3 - First transverse sealing mechanism, 31 - First support, 32 - First hot pressing roller, 33 - Second hot pressing roller;

[0068] 4 - Side sealing mechanism, 41 - Base, 411 - First conveying device, 412 - First horizontal guide rod, 42 - Second horizontal guide rod, 43 - Left wheel set, 431 - Upper slider, 4311 - Second hot pressing wheel, 4312 - Second cold pressing wheel, 432 - Lower slider, 4321 - First hot pressing wheel, 4322 - First cold pressing wheel, 44 - Right wheel set, 45 - Vertical guide rod;

[0069] 5 - Second glue spraying mechanism;

[0070] 6 - Folding mechanism, 61 - Suspension frame, 62 - First pressing wheel, 63 - Second pressing wheel;

[0071] 7 - Sealing mechanism, 71 - Sealing tape roll output shaft, 72 - Pressing tape wheel;

[0072] 8 - Second transverse sealing mechanism;

[0073] 9 - Cutting mechanism;

[0074] 10 - Stacking mechanism, 101 - Material receiving bottom plate, 102 - Front guard plate, 103 - Rear guard plate,

[0075] 20 - Strapping mechanism;

[0076] 30 - Traction mechanism, 301 - Upper belt, 302 - Lower belt;

[0077] 40 - Frame, 401 - Assembly space, 402 - First platform, 4021 - Import structure;

[0078] 50 - Second machine table, 501 - Third conveying device, 502 - Stacking cavity;

[0079] 60 - Second platform, 601 - Second conveying device;

[0080] 70 - First machine table;

[0081] 80 - Third platform. Specific embodiments

[0082] The following combines the accompanying drawings to specifically illustrate the embodiments of the present invention. The accompanying drawings are only for reference and illustration, and do not constitute a limitation on the scope of patent protection of the present invention.

[0083] Please refer to Figures 1-8 , in this embodiment, the automated production line of kraft paper bag making machine includes:

[0084] Unwinding mechanism 1, capable of outputting the bottom kraft paper, middle honeycomb paper, and top kraft paper;

[0085] First spraying glue mechanism 2, including a glue coating structure 21 and a pressing structure 22 arranged in sequence along the conveying direction; the glue coating structure 21 can coat glue on one side of the bottom kraft paper and the top kraft paper close to the middle honeycomb paper; the pressing structure 22 acts on the bottom kraft paper, middle honeycomb paper, and top kraft paper, and can press and form a paper tape;

[0086] First transverse sealing mechanism 3, arranged at the discharge end of the pressing structure 22, acting on the paper tape along the width direction of the paper tape, and capable of forming several first transverse sealing edges on the paper tape;

[0087] Side sealing mechanism 4, arranged at the discharge end of the first transverse sealing mechanism, acting on the paper tape along the length direction of the paper tape, and capable of forming side sealing edges on the paper tape;

[0088] Second spraying glue mechanism 5, arranged at the discharge end of the side sealing mechanism 4, acting on the paper tape along the width direction of the paper tape, and capable of forming transverse glue strips corresponding to the first transverse sealing edges;

[0089] Folding mechanism 6, arranged at the discharge end of the second spraying glue mechanism 5, acting on the paper tape along the width direction of the paper tape, and capable of symmetrically folding the paper tape;

[0090] Sealing mechanism 7, arranged at the discharge end of the folding mechanism 6, acting on the folded paper tape along the length direction of the paper tape, and capable of sealing the side edges of the paper tape away from the crease;

[0091] The second transverse sealing mechanism 8 is arranged at the discharging end of the sealing mechanism 7 and acts on the folded paper tape in the width direction of the paper tape, and can form a second transverse sealing edge corresponding to the transverse rubber strip.

[0092] The cutting mechanism 9 is arranged at the discharging end of the second transverse sealing mechanism 8 and acts on the second transverse sealing edge in the width direction of the paper tape, and can cut out a plurality of kraft paper paper bags.

[0093] The working process of this embodiment is as follows: Three raw material rolls sequentially pass through the first glue spraying mechanism 2, the first transverse sealing mechanism 3, the side sealing mechanism 4, the second glue spraying mechanism 5, the folding mechanism 6, the sealing mechanism 7, the second transverse sealing mechanism 8, and the cutting mechanism 9 to form a plurality of independent paper bags; First, the raw material rolls (including two rolls of kraft paper and one roll of honeycomb paper) are installed on the unwinding mechanism 1 and output to the first glue spraying mechanism 2 through the unwinding mechanism 1. The glue coating structure 21 and the pressing structure 22 act on the raw materials in sequence and make the three raw materials composite into a paper tape with a three-layer structure; When the paper tape passes through the first transverse sealing mechanism 3, a plurality of first transverse sealing edges can be formed in the length direction of the paper tape, and the distance between adjacent first transverse sealing edges is the width of a single paper bag. The composite paper tape is initially reinforced in the transverse direction through the first transverse sealing edges; When the paper tape passes through the side sealing mechanism 4, two side sealing edges can be formed in the length direction of the paper tape. The two side sealing edges and the two adjacent first transverse sealing edges mentioned above are closed to form the boundary of the unfolded area of a single paper bag. The composite paper tape is initially reinforced in the length direction through the side sealing edges; When the paper tape passes through the second glue spraying mechanism 5, glue can be coated on the top surface of the paper tape corresponding to the position of the first transverse sealing edge, and a plurality of transverse rubber strips arranged along the length direction of the paper tape can be formed. The transverse rubber strips are used for pre-fixing the folded paper tape; When the paper tape with transverse rubber strips on the top surface passes through the folding mechanism 6, it can be symmetrically folded along the center line (length direction) of the paper tape. When folding, the transverse rubber strips are folded synchronously to achieve bonding and fixing; When the folded paper tape passes through the sealing mechanism 7, the two side sealing edges can be sealed, thereby realizing the cavity of the bag body; When the sealed paper tape passes through the second transverse sealing device, the second transverse sealing device acts on the aforementioned transverse rubber strips to achieve secondary fixing, forming a plurality of second transverse sealing edges, and a single paper bag is between adjacent second transverse sealing edges; Finally, the cutting mechanism 9 acts on the aforementioned second transverse sealing edge, thereby dividing into a plurality of independent paper bags.

[0094] Preferably, it further includes:

[0095] The stacking mechanism 10 is arranged at the discharging end of the cutting mechanism 9 and can stack a plurality of kraft paper paper bags in the vertical direction to form a stack of paper bags.

[0096] Preferably, it further includes:

[0097] The bundling mechanism 20 is arranged at the discharge end of the stacking mechanism 10 and includes a wire bundling structure and a pushing structure. The wire bundling structure can bundle wires on the paper bag stack, and the pushing structure acts on the bundled paper bag stack to achieve blanking.

[0098] In this embodiment, it further includes a second machine platform 50 and a third conveying device 501 arranged at the feeding end of the second machine platform 50. The second machine platform 50 is docked with the discharge end of the third platform 80 through the third conveying device 501. Specifically, a traction mechanism 30 is arranged at the discharge end of the third platform 80. The traction mechanism 30 is provided with a conveying belt acting on the paper bags. The stacking mechanism 10 includes a receiving bottom plate 101, a front guard plate 102, and a rear guard plate 103. The receiving bottom plate 101 is lower than the conveying surface of the third conveying device 501 in the vertical direction. A stacking cavity 502 is formed on the second machine platform 50. The receiving bottom plate 101, the front guard plate 102, and the rear guard plate 103 can respectively slide relative to the stacking cavity 502 and form a space for placing the paper bag stack with the two side walls of the cavity. It also includes a sliding seat. The receiving bottom plate 101, the front guard plate 102, and the rear guard plate 103 are all arranged on the sliding seat. The sliding seat is driven by a screw motor. The receiving bottom plate 101, the front guard plate 102, and the rear guard plate 103 are respectively fixed to the sliding seat through cylinder seats. Cylinders are arranged on the cylinder seats, and the piston rods of the cylinders can control the front guard plate 102 and the rear guard plate 103 to move up and down, so as to push out the paper stack. The bundling mechanism 20 in this embodiment is a tie bundling machine. The wire bundling structure includes a wire feeding part, a wire cutting part, and a knotting part acting on the wires. The wire feeding part can convey two wires through the top of the paper bag and two wires through the bottom of the paper bag. The wire cutting part is located at the top and bottom of the paper bag stack corresponding to the input path of the wires and is used to cut four wires. The knotting part includes a first wire twisting structure acting on the wire ends of the upper and lower two wires at the left end of the paper bag and capable of forming a binding knot, and a second wire twisting structure acting on the wire ends of the upper and lower two wires at the right end of the paper bag and capable of forming a binding knot. By using the above technical solutions, human resources can be further saved. After the base paper materials are processed by the present utility model, several stacked paper bag packages can be obtained, which is convenient for blanking and facilitates the collection of finished products by the material handlers.

[0099] Preferably, it further includes:

[0100] The traction mechanism 30 is arranged between the side sealing mechanism 4 and the second glue spraying mechanism 5 and / or between the second transverse sealing mechanism 8 and the cutting mechanism 9, and can continuously provide traction force for the paper tape.

[0101] In this embodiment, a traction mechanism 30 is provided between the side sealing mechanism 4 and the second glue spraying mechanism 5, and a traction mechanism 30 is provided between the second transverse sealing mechanism 8 and the cutting mechanism 9. The conveying belt of the traction mechanism 30 includes an upper belt 301 and a lower belt 302 that run synchronously. The upper belt 301 acts on the upper surface of the paper tape / paper bag, and the lower belt 302 acts on the lower surface of the paper tape / paper bag, thereby providing a certain traction force for the conveyance of the paper tape / paper bag to ensure smooth passage through each working mechanism.

[0102] Preferably, it further includes:

[0103] A frame 40, having an assembly space 401 opened at the bottom and a first platform 402 opened at the top. The unwinding mechanism 1 is disposed in the assembly space 401, and the first glue spraying mechanism 2, the first transverse sealing mechanism 3, and the side sealing mechanism 4 are sequentially disposed on the first platform 402 along the conveying direction;

[0104] An introduction structure 4021, disposed on the first platform 402, capable of guiding the bottom layer kraft paper, the middle layer honeycomb paper, and the top layer kraft paper located in the assembly space 401 to the feeding ends of the first glue spraying mechanism 2 respectively.

[0105] In this embodiment, the frame 40 is used to stagger the unwinding mechanism 1 from the first glue spraying mechanism 2, the first transverse sealing mechanism 3, and the side sealing mechanism 4 in the horizontal direction, thereby reducing the overall length of the whole line. The introduction structure 4021 can make the first frame 11, the second frame, and the third frame located in the same horizontal direction, thereby limiting the lateral floor area. Further, a machine adjustment pallet and a safety guard plate matching the length of the first platform 402 are also provided on the first platform 402. Technicians climb onto the machine adjustment pallet through a ladder to debug the first glue spraying mechanism 2, the first transverse sealing mechanism 3, and the side sealing mechanism 4, and use the safety guardrail to improve the safety of machine adjustment.

[0106] Preferably, the unwinding mechanism 1 includes:

[0107] A first frame 11, disposed in the assembly space 401, including a pair of first clamping arms 111 that can be opened and closed, a first support shaft 112 for fixing the bottom layer kraft paper coil, and a first unwinding drive. A rotatable first gear and a pair of rotatable first support wheels are provided at the bottom end of the first clamping arm 111. A second gear meshing and driving with the first gear is provided at the end of the first support shaft 112. The pair of first support wheels can continuously provide an upward supporting force for the first support shaft 112, and the output end of the first unwinding drive is in transmission connection with the first gear;

[0108] A second frame, disposed in the assembly space 401, for providing the middle layer honeycomb paper, having the same structure as the first frame 11;

[0109] The third frame is disposed within the assembly space 401 and is used to provide top-layer kraft paper, having the same structure as the first frame 11.

[0110] In this embodiment, a pair of first clamping arms 111 are respectively slidably engaged with the first frame 11 through sliders. It further includes a lead screw and a servo motor. The lead screw is engaged with the pair of sliders, and the servo motor can drive the lead screw to rotate, thereby realizing the opening and closing of the pair of clamping arms. The interval between the pair of clamping arms is the width of the raw material coil, and the lower part is in an open shape, facilitating technicians to carry the raw material coil by forklift, thereby improving the efficiency of material change and model change.

[0111] Preferably, the guiding structure 4021 includes:

[0112] A first guiding roller is disposed on the first platform 402 and is used to guide the top-layer kraft paper;

[0113] A second guiding roller is disposed on the first platform 402 and is used to guide the middle-layer honeycomb paper;

[0114] A third guiding roller is disposed on the first platform 402 and is used to guide the bottom-layer kraft paper;

[0115] The gluing structure 21 includes:

[0116] A first paper-passing part 211 is docked with the first frame 11 through the first guiding roller and is provided with a first glue spraying member, and the first glue spraying member can spray glue on the inner side of the top-layer kraft paper;

[0117] A second paper-passing part 212 is docked with the second frame through the second guiding roller;

[0118] A third paper-passing part 213 is docked with the third frame through the third guiding roller and is provided with a third glue spraying member, and the third glue spraying member can spray glue on the inner side of the bottom-layer kraft paper;

[0119] The pressing structure 22 includes an upper pressing roller 221 and a lower pressing roller 222 disposed at the discharge end of the gluing structure 21. The top-layer kraft paper, the middle-layer honeycomb paper, and the bottom-layer kraft paper pass through the gap between the upper pressing roller 221 and the lower pressing roller 222 and are pressed together to form a paper tape.

[0120] In this embodiment, the first guide roller and the first paper feeding portion 211 are used to directionally convey the lower layer of kraft paper, wherein the first glue spraying member is slidably arranged on the first paper feeding portion 211 through the first transverse sliding seat, and the first glue spraying member is a glue spraying valve connected to the glue providing device through a hose. The second guide roller and the second paper feeding portion 212 are used to directionally convey the middle layer of honeycomb paper, and the third guide roller and the third paper feeding portion 213 are used for directionally conveying, wherein the structure of the third glue spraying member is the same as that of the first glue spraying member, which will not be repeated here. The three paper feeding portions of this embodiment all include a rotatable roller and a motor for driving the roller to rotate, so as to provide conveying power for the base paper. After glue spraying, the upper pressure roller 221 and the lower pressure roller 222 are used to act on the paper tape to achieve preliminary pressing and shaping.

[0121] Preferably, the first transverse sealing mechanism 3 comprises:

[0122] The first support 31 is arranged across the first platform 402 along the width direction of the paper tape;

[0123] A first hot pressing roller 32, having a first heating structure, rotatably disposed on the first support 31;

[0124] The second heat-pressing roller 33 has a second heating structure and is rotatably disposed on the first support 31 and can form a gap with the first heat-pressing roller 32 for the paper supply belt to pass through;

[0125] A first hot pressing drive is provided on the first platform 402, and an output end thereof is drivingly connected to the first hot pressing roller 32 and the second hot pressing roller 33;

[0126] When the paper tape passes through the gap, the first hot pressing roller 32 acts on the top surface of the paper tape and the second hot pressing roller 33 acts on the bottom surface of the paper tape. As the paper tape is conveyed, a plurality of the first transverse edge seals arranged at equal intervals along the length direction of the paper tape can be formed.

[0127] In this embodiment, four groups of first transverse sealing mechanisms 3 are provided on the first platform 402. The four groups of first transverse sealing structures need to be matched with the pulling speed of the traction mechanism 30. The four groups of first transverse sealing mechanisms 3 act on the first transverse edge sealing successively, which is beneficial to improving the quality of the transverse edge sealing and avoiding the occurrence of incomplete single packaging. The first heating structure and the second heating structure of this embodiment are both electric heating wires, and the first hot pressing roller 32 and the second hot pressing tube are both hollow structures. The electric heating wire is inserted into the hollow structure, and also includes a gas-electric slip ring for electrical connection. The electric heating wire is electrically connected to the power supply through the gas-electric slip ring to avoid the entanglement of the wires, which is beneficial to the line layout.

[0128] Preferably, the side sealing mechanism 4 comprises:

[0129] A base 41, disposed on the first platform 402, is provided with a first conveying device 411 acting on the bottom surface of the paper tape;

[0130] The top seat is vertically movably connected to the base 41 in the thickness direction of the paper tape;

[0131] The left wheel set 43 acts on the left side of the paper tape in the length direction of the paper tape, and includes a lower slider 432, an upper slider 431 and a left hot pressing drive; the lower slider 432 is slidably connected to the base 41 in the width direction of the paper tape, and the lower slider 432 is provided with a plurality of first hot pressing wheels 4321 and at least one first cold pressing wheel 4322 along the conveying direction of the paper tape; the upper slider 431 is slidably connected to the top seat in the width direction of the paper tape, and the upper slider 431 is provided with a plurality of second hot pressing wheels 4311 and at least one second cold pressing wheel 4312 along the conveying direction of the paper tape. A gap for the paper tape to pass through can be formed between the first hot pressing wheel 4321 and the second hot pressing wheel 4311, and between the first cold pressing wheel 4322 and the second cold pressing wheel 4312; the left hot pressing drive is arranged on the base 41, and the output end is in transmission connection with the first hot pressing wheel 4321 and the first cold pressing wheel 4322;

[0132] The right wheel set 44 acts on the right side of the paper tape in the length direction of the paper tape, and has the same structure as the left wheel set 43;

[0133] When the paper tape passes through the gap, the first hot pressing wheel 4321 and the first cold pressing wheel 4322 act on the bottom surface of the paper tape, and the second hot pressing wheel 4311 and the second cold pressing wheel 4312 act on the top surface of the paper tape. With the conveying of the paper tape, a side seal can be formed on the left side of the paper tape.

[0134] In this embodiment, a first horizontal guide rod 412 is provided on the base 41. The lower sliders 432 of the left wheel set 43 and the lower sliders 432 of the right wheel set 44 are respectively in sliding fit with the first horizontal guide rod 412. It also includes a lead screw and a servo motor. The servo motor is provided on the base 41 and is in transmission connection with the lead screw. The lead screw acts on the aforementioned two lower sliders 432 to realize the adjustment of the horizontal interval, so as to be able to adapt to more wide-width paper tapes. A second horizontal guide rod 42 is provided on the top seat. The upper sliders 431 of the left wheel set 43 and the upper sliders 431 of the right wheel set 44 are respectively in sliding fit with the second horizontal guide rod 42. It also includes a pair of vertical guide rods 45, a pair of vertical guide grooves and guide blocks. The first horizontal guide rod 412 and the second horizontal guide rod 42 realize lifting cooperation in the vertical direction through the vertical guide rods 45. The vertical guide grooves are opened on the lower sliders 432, and the guide blocks are opened on the upper sliders 431. The vertical guide grooves and the sliders are used to realize the synchronous sliding of the upper sliders 431 and the lower sliders 432 in the horizontal direction, and the two can only realize relative lifting movement in the vertical direction, so as to realize the opening and closing of the upper sliders 431 and the lower sliders 432 in the vertical direction, that is, drive the first hot pressing wheel 4321 to move relative to the second hot pressing wheel 4311 in the vertical direction, and the first cold pressing wheel 4322 to move relative to the second cold pressing wheel 4312 in the vertical direction;

[0135] In the prior art, during side packaging, the paper tape is divided into a front paper tape and a rear paper tape with the axis of the heat sealing wheel as the boundary. The side edge of the front paper tape after being acted on (contacted) by the heat sealing wheel is already in a sealed state. Since the front paper tape is transversely sealed into a first seal edge and the side is an uninterrupted second seal edge, the gas generated during heat sealing is likely to enter the sandwich structure of the three-layer paper, resulting in bubbles remaining on the paper tape;

[0136] In this embodiment, through the sequential point heat sealing (realized by the lifting of the first hot pressing wheel 4321 and the second hot pressing wheel 4311) and edge heat sealing (after completing the point heat sealing, the traction mechanism 30 or the belt conveying device provided on the base 41 provides power for the forward conveying of the paper tape, and each hot pressing wheel and cold pressing wheel act on the side edge that has not undergone point heat sealing at the same time, so as to realize secondary heat sealing. Before this heat sealing, the paper tape is not completely sealed, so the gas generated by heat can be discharged), acting on the paper bag in a segmented manner can provide a gap for discharging the gas generated during point heat sealing, reduce the residual gas between the paper tape layers, and is beneficial to improving the yield of paper tape packaging; by raising the top seat, the friction force on the paper tape of the side to be sealed before heat sealing is reduced, which is beneficial to improving the smoothness of paper tape conveying, and further reduces the situation of line jams; through the sequential heat sealing and cold sealing, the bonding effect of the multi-layer paper materials of the paper tape can be made better, which is beneficial to improving the product quality.

[0137] Preferably, it further includes:

[0138] The second platform 60 is provided with a second conveying device 601 acting on the paper tape, and the second glue spraying mechanism 5 is arranged on the second platform 60;

[0139] The first machine table 70, the feeding end of the second platform 60 is docked with the feeding end of the first platform 402, and the discharging end is docked with the feeding end of the first machine table 70; the folding mechanism 6 is arranged at the feeding end of the first machine table 70, and the sealing mechanism 7 is arranged at the discharging end of the first machine table 70;

[0140] The third platform 80, the feeding end is docked with the discharging end of the first machine table 70, the second transverse sealing mechanism 8 is arranged at the feeding end of the third platform 80, and the cutting mechanism 9 is arranged at the discharging end of the third platform 80.

[0141] In this embodiment, the second platform 60 is inclined and arranged between the first machine table 70 and the first platform 402, so as to reduce the height of the subsequent mechanism relative to the factory floor, which is convenient for technicians to adjust the machine and maintain it; specifically, the second conveying device 601 is a belt conveyor with a conveying belt, and the second glue spraying mechanism 5 includes a second sliding seat straddling the second conveying device 601 and a glue spraying valve cooperating with the sliding seat. The glue spraying valve applies glue to the first transverse sealing edge on the top surface of the passing paper tape to form a transverse glue strip (for the second thermal transverse sealing after the subsequent folding of the paper tape); the folding mechanism 6 includes a suspension bracket 61, a first pressing wheel 62 and a second pressing wheel 63 arranged on the suspension bracket 61. The first pressing wheel 62 is conical and located at the midline position of the paper tape, and its conical surface acts on the top surface of the folded paper tape. The second pressing wheel 63 is circular and located at the opening of the paper tape. Two layers of kraft paper and a single layer of honeycomb paper are formed into a paper tape through glue coating and compounding, and are symmetrically folded with the midline (length direction) of the paper tape as the axis before being conveyed to the folding mechanism 6. Under the action of the first pressing wheel 62 and the second pressing wheel 63, the subsequent paper tape passing through the first pressing wheel 62 and the second pressing wheel 63 can be automatically folded; the sealing mechanism 7 of this embodiment includes a sealing tape roll output shaft 71 and a pressing belt wheel 72. The sealing tape roll output shaft 71 continuously outputs the sealing tape, and the sealing tape is pressed against the opening of the paper bag through the pressing belt wheel 72 to achieve sealing; further, a deviation correction sensor and an information processor are arranged on the first machine table 70 to detect whether the folded paper tape is offset, so as to ensure the accuracy of the sealing position. The deviation correction sensor is electrically connected to the information processor, and the traction mechanism 30 and the second conveying device 601 are respectively electrically connected to the power supply through the information processor and can be offset left and right (in the width direction) according to the offset of the paper tape to correct the conveying position of the paper tape.

[0142] The above-disclosed are only the preferred embodiments of the present invention, and the scope of the rights protection of the present invention cannot be limited by this. Therefore, the equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. The automatic production line of kraft paper bag making machine is characterized by: include: The unwinding mechanism can output the bottom layer kraft paper, the middle layer honeycomb paper and the top layer kraft paper; The first glue spraying mechanism comprises a glue coating structure and a pressing structure arranged in sequence along the conveying direction; the glue coating structure can coat glue on the bottom kraft paper and the side of the top kraft paper close to the middle honeycomb paper; the pressing structure acts on the bottom kraft paper, the middle honeycomb paper and the top kraft paper, and can press together to form a paper strip; A first transverse sealing mechanism, which is arranged at the discharge end of the pressing structure and acts on the paper tape along the width direction of the paper tape to form a plurality of first transverse sealing edges on the paper tape; A side sealing mechanism, provided at the discharge end of the first transverse sealing mechanism, acts on the paper tape along the length direction of the paper tape and can form a side sealing edge on the paper tape; A second glue spraying mechanism is provided at the discharge end of the side sealing mechanism, and acts on the paper tape along the width direction of the paper tape to form a horizontal glue strip corresponding to the first horizontal edge sealing; A folding mechanism, provided at the discharging end of the second glue spraying mechanism, acts on the paper tape along the width direction of the paper tape and can fold the paper tape symmetrically; A sealing mechanism is provided at the discharge end of the folding mechanism, and acts on the folded paper tape along the length direction of the paper tape, so as to seal the side of the paper tape away from the fold mark; A second transverse sealing mechanism, provided at the discharge end of the sealing mechanism, acts on the folded paper tape along the width direction of the paper tape to form a second transverse edge seal corresponding to the transverse adhesive strip; The cutting mechanism is arranged at the discharging end of the second transverse sealing mechanism, acts on the second transverse sealing edge along the width direction of the paper tape, and can cut out a plurality of kraft paper bags.

2. The automatic production line of kraft paper bag making machine according to claim 1 is characterized in that: Also includes: The stacking mechanism is arranged at the discharging end of the cutting mechanism and can stack a plurality of kraft paper bags in a vertical direction to form a paper bag stack.

3. The automatic production line of kraft paper bag making machine according to claim 2 is characterized in that: Also includes: The bundling mechanism is arranged at the discharging end of the stacking mechanism, and comprises a wire binding structure and a pushing structure. The wire binding structure can bind the wire to the paper bag stack, and the pushing structure acts on the bound paper bag stack to realize the dropping of the material.

4. The automatic production line of kraft paper bag making machine according to claim 1 is characterized in that: Also includes: The traction mechanism is arranged between the side sealing mechanism and the second glue spraying mechanism and / or between the second transverse sealing mechanism and the cutting mechanism, and can continuously provide traction force for the paper tape.

5. The automated production line of kraft paper bag making machine according to claim 1, characterized in that: Also includes: A frame, with an assembly space at the bottom and a first platform at the top, the unwinding mechanism is arranged in the assembly space, and the first glue spraying mechanism, the first transverse sealing mechanism and the side sealing mechanism are arranged on the first platform in sequence along the conveying direction; The introduction structure is arranged on the first platform and can guide the bottom layer kraft paper, the middle layer honeycomb paper and the top layer kraft paper in the assembly space to the feeding end of the first glue spraying mechanism respectively.

6. The automatic production line of kraft paper bag making machine according to claim 5 is characterized in that: The unwinding mechanism comprises: A first frame is arranged in the assembly space, and comprises a pair of first clamping arms that can be opened and closed, a first support shaft for fixing the bottom kraft paper roll, and a first unwinding drive, wherein a rotatable first gear and a pair of rotatable first supporting wheels are arranged at the bottom end of the first clamping arm, a second gear meshing with the first gear is arranged at the end of the first supporting shaft, and the pair of first supporting wheels can continuously provide an upward supporting force for the first supporting shaft, and an output end of the first unwinding drive is transmission-connected with the first gear; A second frame is provided in the assembly space and is used to provide a middle layer of honeycomb paper, and has the same structure as the first frame; The third frame is arranged in the assembly space and is used to provide a top layer of kraft paper, and has the same structure as the first frame.

7. The automatic production line of kraft paper bag making machine according to claim 6 is characterized in that: The import structure includes: A first guide roller, disposed on the first platform, for guiding the upper layer of kraft paper; A second guide roller, disposed on the first platform, for guiding the middle layer of honeycomb paper; A third guide roller, disposed on the first platform, for guiding the lower layer of kraft paper; The glue coating structure comprises: A first paper feeding portion, connected to the first frame through the first guide roller, is provided with a first glue spraying member, and the first glue spraying member can spray glue on the inner side of the upper kraft paper; A second paper feeding portion connected to the second frame through the second guide roller; A third paper feeding part, connected to the third frame through the third guide roller, is provided on a third glue spraying part, and the third glue spraying part can spray glue on the inner side of the lower layer of kraft paper; The lamination structure comprises an upper pressing roller and a lower pressing roller arranged at the discharge end of the glue coating structure. The upper kraft paper, the middle honeycomb paper and the lower kraft paper are pressed through the gap between the upper pressing roller and the lower pressing roller to form a paper strip.

8. The automated production line of kraft paper bag making machine according to claim 5, characterized in that: The first transverse sealing mechanism comprises: A first support, spanning the first platform along the width direction of the paper tape; A first hot pressing roller, having a first heating structure, rotatably disposed on the first support; A second heat-pressing roller, having a second heating structure, is rotatably disposed on the first support and can form a gap with the first heat-pressing roller for the paper supply belt to pass through; A first hot pressing drive, which is disposed on the first platform, and whose output end is drivingly connected to the first hot pressing roller and the second hot pressing roller; When the paper tape passes through the gap, the first hot pressing roller acts on the top surface of the paper tape and the second hot pressing roller acts on the bottom surface of the paper tape. As the paper tape is conveyed, a plurality of the first transverse edge seals arranged at equal intervals along the length direction of the paper tape can be formed.

9. The automatic production line of kraft paper bag making machine according to claim 5, characterized in that: The side sealing mechanism comprises: A base, arranged on the first platform, provided with a first conveying device acting on the bottom surface of the paper tape; A top seat, connected to the base in a liftable manner in the thickness direction of the paper tape; The left wheel group acts on the left side of the paper tape along the length direction of the paper tape, and includes a lower slider, an upper slider and a left hot pressing drive; the lower slider is slidably connected to the base in the width direction of the paper tape, and the lower slider is provided with a plurality of first hot pressing wheels and at least one first cold pressing wheel along the conveying direction of the paper tape; the upper slider is slidably connected to the top seat in the width direction of the paper tape, and the upper slider is provided with a plurality of second hot pressing wheels and at least one second cold pressing wheel along the conveying direction of the paper tape, and a gap can be formed between the first hot pressing wheel and the second hot pressing wheel, and between the first cold pressing wheel and the second cold pressing wheel for the paper tape to pass through; the left hot pressing drive is arranged on the base, and the output end is transmission-connected with the first hot pressing wheel and the first cold pressing wheel; The right wheel group acts on the right side of the paper tape along the length direction of the paper tape, and has the same structure as the left wheel group; When the paper tape passes through the gap, the first hot pressing wheel and the first cold pressing wheel act on the bottom surface of the paper tape, and the second hot pressing wheel and the second cold pressing wheel act on the top surface of the paper tape. As the paper tape is transported, a side seal can be formed on the left side of the paper tape.

10. The automated production line of kraft paper bag making machine according to claim 5, characterized in that: Also includes: The second platform is provided with a second conveying device acting on the paper tape, and the second glue spraying mechanism is arranged on the second platform; The first machine, the feeding end of the second platform is butted with the feeding end of the first platform, and the discharging end is butted with the feeding end of the first machine; The folding mechanism is arranged at the feeding end of the first machine, and the sealing mechanism is arranged at the discharging end of the first machine; The third platform has a feeding end connected to the discharging end of the first machine, the second transverse sealing mechanism is arranged at the feeding end of the third platform, and the cutting mechanism is arranged at the discharging end of the third platform.

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