A valve bag forming production line and control method thereof

Abstract

The present invention relates to a valve bag forming production line and a control method thereof. Two sub-workbenches are symmetrically arranged to simultaneously perform gluing, shaping and sealing treatments on both ends of the valve bag, and the conveying is performed by a conveying mechanism, and a valve bag pre-installation area, a valve bag gluing area and a valve bag forming area are sequentially arranged. An end cutting mechanism for cutting at the end of the valve bag to facilitate the placement of valve port paper and a valve bag pre-adjustment mechanism for pre-installing the initial position of the valve bag are arranged in the corresponding valve bag pre-installation area. A valve bag gluing mechanism for gluing at both ends of the valve bag is arranged in the corresponding valve bag gluing area. A valve bag sealing mechanism for encapsulating the valve bag is arranged in the corresponding valve bag forming area, and the operation is controlled by a controller. The present invention automatically shapes the valve bag, with manual labor as a supplement. The core processes such as gluing, folding and shaping are completed by machinery, which improves work efficiency, has low labor costs, high efficiency, and the formed valve bag is regular and not easy to debond. The scrap rate is low, and it is green and energy-saving, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of forming, feeding, opening or assembling of packaging-related containers or receptacles, and in particular to a valve bag forming production line and a control method thereof. Background Art

[0002] Valve bag is a kind of packaging bag mainly used for packaging edible powder, chemical powder, fertilizer, synthetic materials, explosives, grain, salt, minerals and other powdered or granular solid materials and flexible items.

[0003] The valve bag is fed from the valve port at the top or bottom, and special filling equipment can be used. After filling the material, it is packed into a cube, the stacking is neat and beautiful, and it is an environmentally friendly bag.

[0004] However, the existing valve bag forming is mainly done through manual processing, including placing valve paper on one end of the semi-finished bag, gluing, folding and shaping the two ends until the valve bag is formed. This processing method is highly dependent on manual labor and has low efficiency. The shape of the valve bag after forming is irregular and there is even the possibility of degumming. The finished product has many defects and a high scrap rate, which increases costs. Summary of the invention

[0005] The present invention solves the problems in the prior art that valve bag forming is mainly done by manual processing, which results in strong manual dependence, low efficiency, irregular shapes of the valve bags after forming, and even the possibility of degumming, many defects in the finished products, high scrap rate, and increased costs, and provides an optimized valve bag forming production line and a control method thereof.

[0006] The technical solution adopted by the present invention is a valve bag forming production line, the production line includes two symmetrically arranged sub-workbenches, the two sub-workbenches are sequentially provided with a valve bag pre-installation area, a valve bag gluing area and a valve bag forming area;

[0007] A transmission mechanism is provided between the two sub-workbenches corresponding to the valve bag pre-installation area, the valve bag gluing area and the valve bag forming area;

[0008] An end cutting mechanism and a valve bag pre-adjusting mechanism are provided corresponding to the valve bag pre-installation area, a valve bag gluing mechanism is provided corresponding to the valve bag gluing area, and a valve bag sealing mechanism is provided corresponding to the valve bag molding area;

[0009] The transmission mechanism, the end cutting mechanism, the valve bag pre-adjustment mechanism, the valve bag gluing mechanism and the valve bag sealing mechanism are connected to a controller.

[0010] Preferably, the valve bag gluing mechanism comprises feed surfaces respectively arranged on two sub-workbenches, and a gluing unit is cooperatively arranged above the ends of the two feed surfaces;

[0011] The glue coating unit comprises a first frame respectively straddling two sub-workbenches, a first motor is arranged on one side of the first frame, an output gear is arranged outside the output shaft of the first motor, a first gear set is arranged on one side of the first frame matching the output gear, and the first gear set comprises a first transmission gear; the first transmission gear is fixedly sleeved on one end of a transmission rod, the transmission rod passes through the first frame, a second transmission gear is sleeved on the other end matching the transmission rod, and a second gear set is arranged matching the second transmission gear on the other side of the first frame;

[0012] A glue coating roller group is respectively provided on any feeding surface matching the first gear group and the second gear group; and the first motor is connected to the controller.

[0013] Preferably, a feed roller is provided on the feed surface on the front side of any of the glue coating roller groups, and a tension roller is provided at the rear end of the glue coating roller group that cooperates with the feed roller; the feed roller is arranged in cooperation with the first gear group or the second gear group on the corresponding side;

[0014] The feed roller includes a shaping section and embossing sections arranged at both ends of the shaping section, a tensioning belt is arranged between the shaping section and the tensioning roller, and a pressure plate is arranged coaxially with the feed roller at one end of any embossing section facing the shaping section, and the two pressure plates of any feed roller are symmetrically arranged.

[0015] Preferably, any of the feed surfaces includes an outer feed surface and an inner feed surface arranged at the bottom of the corresponding glue coating roller group, and a gap is provided between the outer feed surface and the inner feed surface; the front ends of the outer feed surface and the inner feed surface are respectively provided with an outer guide rod and an inner guide rod, the front end of the outer guide rod is in contact with the corresponding sub-workbench, and a gap is provided between the front end of the inner guide rod and the corresponding sub-workbench, and the rear ends of the outer guide rod and the inner guide rod are inclined upward and respectively matched with the two sides of the gap.

[0016] Preferably, the end cutting mechanism includes a guillotine arranged at the front end of any side of the sub-workbench, and a guillotine groove is provided on the sub-workbench to cooperate with the guillotine; one end of the guillotine is hinged to the side end of the sub-workbench corresponding to the guillotine groove, and the other end of the guillotine is hinged to the output end of the bottom of the first cylinder, and the top of the first cylinder is connected to the sub-workbench through a bracket; the first cylinder is connected to the controller through an air source.

[0017] Preferably, the transmission mechanism comprises a plurality of tensioning and conveying units which are arranged in sections on opposite sides of the two sub-workbenches and a plurality of rollers which are arranged between the opposite tensioning and conveying units; the plurality of tensioning and conveying units are arranged corresponding to the valve bag pre-installation area, the valve bag gluing area and the valve bag forming area;

[0018] Any of the tensioning conveying units includes a first conveyor belt arranged along the conveying direction, a second conveyor belt is arranged below the first conveyor belt, a gap is provided between the first conveyor belt and the second conveyor belt, and the sub-workbench, the upper surface of the second conveyor belt and the top of the roller are located on the same horizontal plane; any of the first conveyor belt and / or the second conveyor belt is arranged in cooperation with the output end of the drive motor, and the drive motor is connected to the controller.

[0019] Preferably, the valve bag pre-adjustment mechanism is arranged in cooperation with the transmission mechanism of the valve bag pre-installation area;

[0020] The valve bag pre-adjustment mechanism includes a first mounting plate arranged in cooperation with the first conveyor belt, the first mounting plate includes an inverted right-angle piece and a horizontal pressing plate arranged on the side right-angle surface of the right-angle piece, the inner right-angle surface of any of the right-angle pieces is arranged in cooperation with the first conveyor belt on the corresponding side, and the horizontal pressing plate is arranged on the sub-workbench on the corresponding side; an adjusting piece is provided on the top of the upper right-angle surface of the right-angle piece, a waist-shaped hole is penetrated through the adjusting piece, and an adjustable nut is correspondingly provided between the waist-shaped hole and the upper right-angle surface of the right-angle piece, and the end of the adjusting piece is fixed to the second frame of the sub-workbench on the corresponding side by a detachable fixing rod;

[0021] A first adjusting screw is provided on the side right-angled surface that passes through the two right-angled pieces, and a first adjusting nut is provided on the side right-angled surfaces of the two right-angled pieces that match the first adjusting screw;

[0022] The valve bag pre-adjustment mechanism also includes a second adjusting screw arranged under the sub-workbench, the second adjusting screw is perpendicular to the transmission direction of the transmission unit, second adjusting nuts are arranged at both ends of the second adjusting screw, and a second mounting plate is arranged in conjunction with any second adjusting nut, and any second mounting plate is arranged in conjunction with the second conveyor belt on the corresponding side.

[0023] Preferably, a finishing area is provided between the valve bag pre-installation area and the valve bag gluing area, and a glue gun is provided at the finishing area, and the glue gun is arranged in cooperation with the controller.

[0024] Preferably, the valve bag sealing mechanism comprises a third frame corresponding to any sub-workbench and a shaping unit and a sealing unit which are sequentially arranged in cooperation with any third frame;

[0025] The shaping unit comprises a second cylinder arranged on a third frame, a fixing plate is arranged on the bottom of the second cylinder, a first claw plate and a second claw plate are arranged on the sub-workbench below the fixing plate; the first claw plate is arranged in cooperation with the transmission mechanism on the corresponding side, a gap is arranged between the first claw plate and the sub-workbench, and the second claw plate is arranged opposite to the corresponding first claw plate;

[0026] The sealing unit comprises a third cylinder arranged on a third frame, a reel is hung at the bottom of the third cylinder, a sealing paper is wound around the reel, and the reel is arranged perpendicular to the transmission direction of the transmission mechanism;

[0027] A paper cutting mechanism is provided on the side of the sub-workbench cooperating with the third cylinder and cooperating with the sealing paper;

[0028] The second cylinder, the third cylinder, the first claw plate, and the second claw plate are connected to a controller.

[0029] A control method for a valve bag forming production line, the method comprising the following steps:

[0030] Step 1: Initialize the pipeline and start the controller;

[0031] Step 2: Place the two end openings of the valve bag to be sealed toward the outside of the two sub-workbenches respectively; adjust the two end openings of the valve bag to the state of waiting for gluing, and the end cutting mechanism cuts one end opening of the valve bag, and sets the valve paper with glue at the end opening after the cutting;

[0032] Step 3: Adjust the relative position between the valve bag pre-adjustment mechanism and the valve bag so that the position of the valve bag to be glued is completely exposed to the outside of the transmission mechanism; start the transmission mechanism and transport the valve bag backward;

[0033] Step 4: In the finishing area, glue is added to the end opening of the valve bag corresponding to the valve mouth paper with glue;

[0034] Step 5: The two ends of the valve bag rise to the feed surface through the corresponding outer guide rod and inner guide rod respectively, and the end position of the valve bag to be folded is pressed by the embossing section until a crease appears, and the end of the valve bag is flattened by the shaping section, and the end position of the valve bag is glued by the glue roller group and then sent out from the rear end;

[0035] Step 6: The two ends of the valve bag run to the valve bag sealing mechanism, the first claw plate and the second claw plate are folded together, the second cylinder drives the fixed plate to press down, and the ends of the valve bag are bonded;

[0036] Step 7: The valve bag continues to move forward, and the third cylinder descends, and the sealing paper with the adhesive layer is sealed to the top of the end of the valve bag;

[0037] Step 8: Valve pocket forming.

[0038] The present invention relates to an optimized valve bag forming production line and a control method thereof. By symmetrically arranging two sub-workbenches on the production line, both ends of the valve bag can be glued, shaped and sealed at the same time; a valve bag pre-installation area, a valve bag gluing area and a valve bag forming area are coordinated and arranged in sequence on the two sub-workbenches, and the valve bag to be processed is conveyed by a conveying mechanism, an end cutting mechanism for cutting an end of the valve bag for placing valve port paper and a valve bag pre-adjusting mechanism for pre-installing the initial position of the valve bag are arranged in the corresponding valve bag pre-installation area, a valve bag gluing mechanism for gluing both ends of the valve bag is arranged in the corresponding valve bag gluing area, and a valve bag sealing mechanism for packaging the valve bag is arranged in the corresponding valve bag forming area, and the operation of the overall production line is controlled by a controller.

[0039] The assembly line of the present invention automatically performs the forming process of the valve bag, assisted by manual labor, especially the core processes such as gluing, folding, and shaping are completed by machines, the process efficiency is greatly improved, the labor cost is low, the overall efficiency is high, the valve bag after forming is regular and not easy to debond, the scrap rate is low, it is green and energy-saving, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a side view structural schematic diagram of the present invention;

[0041] Figure 2 It is a structural schematic diagram of the end notch mechanism in the present invention;

[0042] Figure 3 It is a structural schematic diagram of the valve bag in the present invention after both ends are folded and before entering the assembly line;

[0043] Figure 4 The schematic diagram of the structure of the valve bag in the present invention after one end is cut by the end cutting mechanism, and the other end is generally still Figure 3 As shown;

[0044] Figure 5 It is a structural schematic diagram of setting the valve paper provided with glue at the end opening of the valve bag after the incision in the present invention;

[0045] Figure 6 It is a schematic diagram of the front view structure of the valve bag pre-adjustment mechanism in the present invention;

[0046] Figure 7 It is a schematic diagram of the structure of the cooperation between the first mounting plate on one side, the first conveyor belt, the second mounting plate, and the second conveyor belt in the valve bag pre-adjustment mechanism of the present invention;

[0047] Figure 8 A schematic diagram of the structure of a top view of a valve bag gluing mechanism of the present invention;

[0048] Fig. 9It is a schematic structural diagram of a rear end face view of a glue coating unit in the present invention as an example;

[0049] Fig.10 It is a schematic diagram of a three-dimensional structure at a bottom-up angle taking a glue coating unit as an example in the present invention;

[0050] Fig.11 It is a structural schematic diagram of the feeding unit in the present invention when it is introduced into the valve bag body where one end of the valve port paper is placed;

[0051] Fig.12 It is a schematic structural diagram of a cross-sectional view of the valve bag body relative to the outer feed surface, the inner feed surface and the workbench during the process of the feed unit being introduced into the valve bag body in the present invention;

[0052] Fig.13 It is a schematic diagram of the front view structure of the transmission mechanism and the shaping unit of the valve bag sealing mechanism in the present invention;

[0053] Fig.14 It is a side view structural schematic diagram of the valve bag sealing mechanism in the present invention;

[0054] Fig.15 It is a schematic diagram of the shaping unit of the present invention acting on the valve bag to be processed on one end of the valve port paper, wherein the arrow indicates that the folding plates of the first claw plate and the second claw plate are turned up;

[0055] Fig.16 It is a schematic diagram of the sealing unit of the present invention acting on the valve bag to be processed, wherein the solid arrow represents the movement direction of the sealing unit relative to the valve bag to be processed, and the dotted arrow represents the movement direction of the valve bag to be processed relative to the sealing unit. DETAILED DESCRIPTION

[0056] The present invention is further described in detail below in conjunction with embodiments, but the protection scope of the present invention is not limited thereto.

[0057] The present invention relates to a valve bag forming production line, which comprises two symmetrically arranged sub-workbenches 1, on which the two sub-workbenches 1 are sequentially provided with a valve bag pre-installation area 2, a valve bag gluing area 3 and a valve bag forming area 4;

[0058] Two sub-workbenches corresponding to the valve bag pre-assembly area 2, the valve bag gluing area 3 and the valve bag forming area 4 are equipped with a transmission mechanism;

[0059] An end cutting mechanism and a valve bag pre-adjusting mechanism are provided corresponding to the valve bag pre-installation area 2, a valve bag gluing mechanism is provided corresponding to the valve bag gluing area 3, and a valve bag sealing mechanism is provided corresponding to the valve bag molding area 4;

[0060] The transmission mechanism, the end cutting mechanism, the valve bag pre-adjustment mechanism, the valve bag gluing mechanism and the valve bag sealing mechanism are connected to a controller.

[0061] In the present invention, the assembly line mainly includes two symmetrically arranged sub-workbenches 1, which can simultaneously perform gluing, shaping and sealing on both ends of the valve bag. The extension direction of the sub-workbenches 1 is the conveying direction of the valve bag to be processed. It should be noted that the current assembly line can also be applied to ordinary packaging bag processing. At this time, only one side of the sub-workbenches 1 is left to work, that is, only one side is sealed. Alternatively, two sub-workbenches 1 can be left, and after gluing, fitting and shaping the two ends, they are cut from the center.

[0062] In the present invention, a valve bag pre-installation area 2, a valve bag gluing area 3 and a valve bag forming area 4 are arranged in sequence on two sub-workbenches 1, and a transmission mechanism is used to transport the valve bag to be processed, wherein the valve bag pre-installation area 2 is used to perform preliminary shaping of the valve bag to be processed and limit the position of the valve mouth paper 68, the valve bag gluing area 3 is used to gluing the valve bag to be processed and ensure the closure and strength of the valve bag, and the valve bag forming area 4 is used to fold, bond and fix the two ends of the bag body in the gluing area to finally form a formed valve bag.

[0063] In the present invention, the valve bag pre-loading area 2 uses an end cutting mechanism to cut the end of the valve bag to be processed to facilitate the placement of the valve mouth paper 68, and uses a valve bag clamping adjustment mechanism to pre-load the initial position of the valve bag and adjust the relative position between the transmission mechanism and the valve bag to be processed.

[0064] In the present invention, the valve bag gluing area 3 uses the valve bag gluing mechanism to gluing and effectively process both ends of the input valve bag to be processed, which is convenient for shaping and subsequent sealing.

[0065] In the present invention, the valve bag forming area 4 uses a valve bag sealing mechanism to seal the valve bag to ensure the airtightness and firmness of the valve bag.

[0066] In the present invention, the operation of the entire assembly line is controlled by a controller, and the controller controls the driving mechanism including the motor and the air source. This is easily understood by those skilled in the art and can be implemented by PLC or other control methods.

[0067] The assembly line of the present invention automatically performs the forming process of the valve bag, assisted by manual labor, especially the core processes such as gluing, folding, and shaping are completed by machines, the process efficiency is greatly improved, the labor cost is low, the overall efficiency is high, the valve bag after forming is regular and not easy to debond, the scrap rate is low, it is green and energy-saving, and the production cost is reduced.

[0068] The valve bag gluing mechanism comprises feed surfaces respectively arranged on two sub-workbenches 1, and a gluing unit is provided on the ends of the two feed surfaces;

[0069] The gluing unit comprises a first frame 5 respectively straddling two sub-workbenches 1, a first motor 6 is arranged on one side of the first frame 5, an output shaft of the first motor 6 is provided with an output gear 7, a first gear set 8 is arranged on one side of the first frame 5 to match the output gear 7, and the first gear set 8 comprises a first transmission gear 9; the first transmission gear 9 is fixedly sleeved on one end of a transmission rod 10, the transmission rod 10 runs through the first frame 5, a second transmission gear 11 is sleeved on the other end to match the transmission rod 10, and a second gear set 12 is matched with the second transmission gear 11 on the other side of the first frame 5;

[0070] A glue coating roller group 13 is correspondingly provided on any feeding surface cooperating with the first gear group 8 and the second gear group 12; the first motor 6 is connected to the controller.

[0071] A feed roller 14 is provided on the feed surface on the front side of any of the glue coating roller groups 13, and a tension roller 15 is provided at the rear end of the glue coating roller group 13 that cooperates with the feed roller 14; the feed roller 14 is arranged in cooperation with the first gear group 8 or the second gear group 12 on the corresponding side;

[0072] The feed roller 14 includes a shaping section 16 and embossing sections 17 arranged at both ends of the shaping section 16, a tensioning belt 18 is arranged between the shaping section 16 and the tensioning roller 15, and a pressure plate 19 is coaxially arranged with the feed roller 14 at one end of any embossing section 17 facing the shaping section 16, and the two pressure plates 19 of any feed roller 14 are symmetrically arranged.

[0073] Any of the feed surfaces includes an outer feed surface 20 and an inner feed surface 21 arranged at the bottom of the corresponding glue coating roller group 13, and a gap 22 is provided between the outer feed surface 20 and the inner feed surface 21; the front ends of the outer feed surface 20 and the inner feed surface 21 are respectively provided with an outer guide rod 23 and an inner guide rod 24, the front end of the outer guide rod 23 is in contact with the corresponding sub-workbench 1, and a gap is provided between the front end of the inner guide rod 24 and the corresponding sub-workbench 1, and the rear ends of the outer guide rod 23 and the inner guide rod 24 are inclined upward and respectively matched with the two sides of the gap 22.

[0074] In the present invention, both ends of the valve bag to be processed are fed from the feed surfaces on the two sub-workbenches 1 to the valve bag gluing mechanism. Specifically, each feed surface includes an outer feed surface 20 and an inner feed surface 21 with a channel (gap 22) in the middle. The width of the gap 22 is slightly larger than the thickness of the valve bag. At the same time, an outer guide rod 23 and an inner guide rod 24 are respectively provided at the front ends of the outer feed surface 20 and the inner feed surface 21. The guide mechanism is set as a rod-shaped structure so that the guide mechanism can open the gluing surface 25 and the bag body 26, and then the part where the gluing surface 25 is located can rise to the feed surface, the gluing surface 25 is glued, and part of the bag body 26 passes through the channel; in order to ensure the effect of opening the gluing surface 25 and the bag body 26, the outer guide rod 23 and the inner guide rod 24 are inclined, and the slope is generally 5-10 degrees.

[0075] In the present invention, it is also necessary to explain that the outer feed surface 20 and the outer guide rod 23 refer to the feed surface and the guide rod close to the outer edge of the sub-worktable 1, that is, the outer feed surface and the outer guide rod, and the inner feed surface 21 and the inner guide rod 24 refer to the feed surface and the guide rod close to the transmission mechanism side, that is, the inner feed surface and the inner guide rod.

[0076] In the present invention, it is obvious that the front end portion of the outer guide rod 23 is in contact with the sub-workbench 1 to ensure that the upper glue surface 25 facing the edges of both sides of the sub-workbench 1 can smoothly move onto the outer guide rod 23, and a gap is provided between the front end portion of the inner guide rod 24 and the sub-workbench 1, and the gap is the bag body thickness corresponding to the main accommodating cavity after the bag body 26 is flattened, that is, the inner guide rod 24 can just pass through the upper glue surface 25 and the main body of the bag body 26, and the upper glue surface 25 facing the transmission unit can smoothly move onto the inner guide rod 24.

[0077] In the present invention, after reaching the outer feeding surface 20 and the inner feeding surface 21, the glue-applying surfaces 25 at both ends of the valve bag are unfolded below the glue-applying unit.

[0078] In the present invention, in order to ensure the guiding effect, the distance between the outer guide rod 23 and the inner guide rod 24 decreases from the sub-worktable 1 surface to the outer feed surface 20 and the inner feed surface 21 .

[0079] In the present invention, after reaching the feeding surface, the gluing surfaces 25 at both ends of the valve bag are unfolded under the gluing unit. The gluing unit includes two corresponding parts, which correspond to two sub-workbenches 1 respectively and are connected by a first frame 5 straddling the two sub-workbenches 1; it should be noted that, obviously, the first frame 5 is straddling the two sub-workbenches 1, but because the overall feeding surface needs to be provided with a certain gap relative to the sub-workbenches 1 for the valve bag to pass through, in fact the gluing unit as a whole is suspended relative to the sub-workbenches 1, or at least except for the outer plate of the first frame 5, the rest of the gluing unit is suspended. When the gluing unit as a whole is suspended, the first frame 5 can be set on the horizontal ground on one side or both sides of the sub-workbenches 1 through the columns 27. At the same time, those skilled in the art can set other support members based on the columns 27 on one side or both sides of the sub-workbenches 1 according to needs, so that the gluing unit as a whole is stable; such as Fig. 9 As shown in FIG. 1 , it is a schematic diagram after the column 27 is set. When this structure is not adopted, the first frame 5 needs to be fixed to the sub-workbench 1, such as Fig. 9 As shown in the dotted line portion at the bottom of the first frame 5.

[0080] In the present invention, a first motor 6 is arranged on one side of the first frame 5. After the first motor 6 obtains a driving command, it drives the first gear set 8 to rotate through the output gear 7, thereby driving the glue coating roller set 13 corresponding to the first gear set 8 to work and apply glue to the glue surface 25. At the same time, the first gear set 8 includes or cooperates with the first transmission gear 9. During the operation of the first gear set 8, power is transmitted to the second transmission gear 11 on the other side of the first frame 5 through the first transmission gear 9 and the transmission rod 10. The second transmission gear 11 cooperates with the second gear set 12 to drive the glue coating roller set 13 corresponding to the second gear set 12 to apply glue.

[0081] In the present invention, the glue coating roller group 13 mainly includes a feed roller 14 at the front side. The feed roller 14 itself has two functions of shaping and feeding. The shaping section 16 in the middle cooperates with the tensioning roller 15 at the rear side of the glue coating roller group 13. A tensioning belt 18 is arranged between the two to flatten the glue surface 25 of the bag body 26 with the tensioning belt 18; at the same time, the embossing sections 17 at both ends of the shaping section 16 are working, and the vertically arranged pressure plate 19 is used to synchronously press out the fold line during the process of feeding the glue surface 25 from front to back, which is convenient for subsequent operations, specifically, the operation of turning up the two sides of the glue surface 25 and then stacking and bonding them.

[0082] In the present invention, the bag body 26 is transported backwards by the transmission mechanism, but in order to ensure the smoothness of its transportation, a matching shaft body can also be embedded at the outer feed surface 20 and the inner feed surface 21 under the feed roller 14 to cooperate with the feed roller 14; this is content that can be easily understood by technical personnel in this field, and technical personnel in this field can set it by themselves based on actual conditions.

[0083] In the present invention, the glue coating roller group 13 is arranged between the feed roller 14 and the tensioning roller 15, and generally includes a glue storage roller 28 and at least two glue pressing rollers 29, which cooperate with each other to apply glue on the glue application surface 25 and press it to the required glue layer thickness; this is a conventional technology in the field of gluing machinery, and technical personnel in this field can set it according to their needs, and they only need to ensure that the gluing is complete.

[0084] In the present invention, a scraper is generally provided on the first frame 5 at the rear side of the glue coating roller group 13. The scraper can scrape off excess glue to avoid glue overflow, and can also scrape the glue to a uniform state to ensure the final sealing effect. Generally speaking, in order to extend the service life of the scraper, it can be set to a soft scraper surface, or a hinge shaft can be set on the side of the end facing away from the feed surface, that is, the scraper can rotate slightly around the hinge shaft.

[0085] The end cutting mechanism includes a guillotine 30 arranged at the front end of any side of the sub-workbench 1, and a guillotine groove 69 is provided on the sub-workbench 1 to cooperate with the guillotine 30; one end of the guillotine 30 is hinged to the side end of the sub-workbench 1 corresponding to the guillotine groove 69, and the other end of the guillotine 30 is hinged to the output end at the bottom of the first cylinder 31, and the top of the first cylinder 31 is connected to the sub-workbench 1 through a bracket 70; the first cylinder 31 is connected to the controller through an air source.

[0086] In the present invention, the end cutting mechanism is mainly used in the forming operation of valve bags, and can be selected in the forming of ordinary packaging bags.

[0087] In the present invention, the output of the first cylinder 31 is controlled by a controller, that is, the guillotine 30 can be lifted or lowered relative to the sub-workbench 1 in coordination with the guillotine groove 69. After the incision is completed, the folded portion of one end of the valve bag to be sealed can be unfolded, the valve mouth paper 68 can be placed on it and preliminary processing can be performed.

[0088] The transmission mechanism includes a plurality of tensioning and conveying units which are arranged in sections on opposite sides of the two sub-workbenches 1 and a plurality of rollers 32 which are arranged between the opposite tensioning and conveying units; the plurality of tensioning and conveying units are arranged corresponding to the valve bag pre-installation area, the valve bag gluing area and the valve bag forming area;

[0089] Any of the tensioning conveying units includes a first conveyor belt 33 arranged along the conveying direction, a second conveyor belt 34 is arranged below the first conveyor belt 33, a gap is arranged between the first conveyor belt 33 and the second conveyor belt 34, and the upper surface of the sub-workbench 1, the second conveyor belt 34 and the top of the roller 32 are located on the same horizontal plane; any of the first conveyor belt 33 and / or the second conveyor belt 34 is arranged in cooperation with the output end of the drive motor, and the drive motor is connected to the controller.

[0090] The valve bag pre-adjustment mechanism is arranged in cooperation with the transmission mechanism of the valve bag pre-installation area;

[0091] The valve bag pre-adjustment mechanism includes a first mounting plate arranged in cooperation with the first conveyor belt 33, the first mounting plate includes an inverted right-angle piece 35 and a horizontal pressing plate 36 arranged on the side right-angle surface of the right-angle piece 35, the inner right-angle surface of any of the right-angle pieces 35 is arranged in cooperation with the first conveyor belt 33 on the corresponding side, and the horizontal pressing plate 36 is arranged on the sub-workbench 1 on the corresponding side; an adjusting piece 37 is provided on the top of the upper right-angle surface of the right-angle piece 35, and a waist-shaped hole 38 is penetrated through the adjusting piece 37, and an adjustable nut 39 is correspondingly provided between the waist-shaped hole 38 and the upper right-angle surface of the right-angle piece 35, and the end of the adjusting piece 37 is fixed to the second frame 41 on the sub-workbench 1 on the corresponding side through a detachable fixing rod 40;

[0092] A first adjusting screw 50 is provided on the side right-angled surfaces penetrating the two right-angled pieces 35, and a first adjusting nut 51 is provided on the side right-angled surfaces of the two right-angled pieces 35 cooperating with the first adjusting screw 50;

[0093] The valve bag pre-adjustment mechanism also includes a second adjusting screw 42 arranged under the sub-workbench 1, the second adjusting screw 42 is perpendicular to the transmission direction of the transmission unit, and second adjusting nuts 43 are arranged at both ends of the second adjusting screw 42. A second mounting plate 44 is arranged in conjunction with any second adjusting nut 43, and any second mounting plate 44 is arranged in conjunction with the second conveyor belt 34 on the corresponding side.

[0094] In the present invention, the transmission mechanism plays the role of transmitting the semi-finished valve bag from front to back and ensuring its flatness; wherein, the work of transmitting from front to back is completed by the roller 32, and most of the area of ​​the valve bag to be processed is placed on the roller 32, which is transmitted backward and maintained supported, while the role of ensuring flatness is achieved by the cooperation of the first conveyor belt 33 and the second conveyor belt 34 to apply a backward friction force. The second conveyor belt 34 is generally a rubber belt to ensure that the friction between the two is maximized. In order to ensure that there is no slipping during tensioning and transmission, a tensioning wheel 45 can also be used to tighten the first conveyor belt 33 and the second conveyor belt 34; in special circumstances, a counterweight block can also be used to ensure the contact between the first conveyor belt 33 and the second conveyor belt 34 and the valve bag; the controller controls the drive motor to drive the first conveyor belt 33 and / or the second conveyor belt 34 to move, which is a conventional technology in the field. Specifically, in order to drive the rotating body in the first conveyor belt 33 and / or the second conveyor belt 34 to rotate, technical personnel in this field can set it according to their needs.

[0095] In the present invention, it is obvious that a gap is provided between the first conveyor belt 33 and the second conveyor belt 34 and the upper surface of the sub-workbench 1, the second conveyor belt 34 and the top of the roller 32 are located at the same horizontal plane to ensure smooth passage of the valve bag.

[0096] In the present invention, in order to ensure the accuracy of the valve bag's backward transmission, a valve bag pre-adjustment mechanism is further provided in the valve bag pre-installation area; it should be noted that in the valve bag pre-adjustment mechanism, part of the roller 32 can be adjusted to a platform to ensure the adjustment effect.

[0097] In the present invention, the inverted right-angle piece 35 of the first mounting plate is buckled on the outside of the first conveyor belt 33. Generally speaking, a support member 46 is arranged on the inner right-angle surface of the right-angle piece 35, and a roller 47 is arranged outside the support member 46. The first conveyor belt 33 is surrounded by all the rollers 47. At the same time, a horizontal pressing plate 36 is arranged on the side right-angle surface of the right-angle piece 35. The horizontal pressing plate 36 is located on the sub-workbench 1. Obviously, there is also a gap between the horizontal pressing plate 36 and the sub-workbench 1.

[0098] In the present invention, an adjustment component is arranged on the top of the upper right-angle surface of the right-angle piece 35, and the adjustment component is used to enable the horizontal pressure plate 36 to move normally in the horizontal direction under the fixation of the second frame 41; specifically, the adjustable nut 39 cooperates with the upper right-angle surface of the right-angle piece 35, adjusts its position in the waist-shaped hole 38 on the adjustment piece 37 and fixes it, and the end of the adjustment piece 37 is fixed to the second frame 41 on the sub-workbench 1 on the corresponding side through a detachable fixing rod 40; further, a thread 48 is arranged on the outside of the detachable fixing rod 40, and the detachable fixing rod 40 can be raised or lowered by a pressure nut 49 that cooperates with the thread 48, thereby adjusting the pressure of the first mounting plate in the vertical direction.

[0099] In the present invention, the pressure value can be further obtained through the pressure sensor to ensure the uniformity of the pressure, which is convenient for the controller to control the time points of the upward and downward pressure.

[0100] In the present invention, the first adjusting screw 50 passing through the side right-angle surfaces of the two right-angle pieces 35 cooperates with the first adjusting nut 51 to adjust the position of the first mounting plate, thereby adjusting the position of the first conveyor belt 33; the second adjusting screw 42 passing through the two second mounting plates 44 cooperates with the second adjusting nut 43 to adjust the position of the second mounting plate 44, thereby adjusting the position of the second conveyor belt 34.

[0101] In the present invention, the positions of the first mounting plate and the second mounting plate 44 can be output and adjusted manually or by controller control, which is easily understood by those skilled in the art, and they can set it according to their needs.

[0102] In the present invention, in order to ensure that the first conveyor belt 33 and the second conveyor belt 34 are accurately aligned and the valve bag is always flat and not twisted, an alignment sensing mechanism including an infrared transceiver or any mechanism that can give an alignment signal can be set between the first conveyor belt 33 and the second conveyor belt 34. When the first conveyor belt 33 and the second conveyor belt 34 are aligned, a signal is sent to the controller, and the controller controls the adjustment of the first mounting plate and the second mounting plate 44 to stop; this is a conventional technology in the field, and those skilled in the art can set it according to their needs.

[0103] A finishing area 52 is provided between the valve bag pre-installation area 2 and the valve bag gluing area 3 , and a glue gun 53 is provided at the finishing area 52 . The glue gun 53 is arranged in cooperation with a controller.

[0104] In the present invention, since the valve mouth paper 68 will be placed on the gluing surface 25 in the valve bag pre-installation area 2, and only the gluing surface 25 will be glued in the valve bag gluing area 3 later, in order to ensure the accurate position of the valve mouth paper 68 and the complete packaging and good firmness of the valve bag after molding, a sorting area 52 is set between the valve bag pre-installation area 2 and the valve bag gluing area 3. The sorting area 52 is mainly provided with a glue gun 53, and the inner side of the triangular area at the gluing surface 25 is glued and the valve mouth paper 68 is shaped in a semi-manual manner, so as to ensure that the work of the valve bag gluing area 3 is carried out smoothly without paper jam.

[0105] The valve bag sealing mechanism comprises a third frame 54 corresponding to any sub-workbench 1 and a shaping unit and a sealing unit which are sequentially arranged to cooperate with any third frame 54;

[0106] The shaping unit includes a second cylinder 55 disposed on a third frame 54, a fixing plate 56 is disposed at the bottom of the second cylinder 55, and a first claw plate 57 and a second claw plate 58 are provided on the sub-workbench 1 below the fixing plate 56; the first claw plate 57 is provided in cooperation with the transmission mechanism on the corresponding side, a gap is provided between the first claw plate 57 and the sub-workbench 1, and the second claw plate 58 is provided opposite to the corresponding first claw plate 57;

[0107] The sealing unit comprises a third cylinder 59 disposed on a third frame 54, a reel 60 is hung at the bottom of the third cylinder 59, a sealing paper 61 is wound around the reel 60, and the reel 60 is arranged perpendicular to the transmission direction of the transmission mechanism;

[0108] A paper cutting mechanism 62 is provided on the side of the sub-workbench 1 that cooperates with the third cylinder 59 and cooperates with the sealing paper;

[0109] The second air cylinder 55, the third air cylinder 59, the first claw plate 57 and the second claw plate 58 are connected to a controller.

[0110] In the present invention, a shaping unit and a sealing unit are sequentially arranged on the third frame 54, which are respectively used to fold, shape and stick sealing paper 61 on the ends of the valve bag that has been glued. The controller controls the overall operation of the transmission unit, the shaping unit and the sealing unit, thereby ensuring the continuity and efficiency of the work. Obviously, the working direction of the shaping unit and the sealing unit is downward, toward the sub-workbench 1.

[0111] In the present invention, the third frame 54 can be directly arranged on the sub-workbench 1 on the corresponding side, or can be extended outward and arranged on the horizontal ground outside the sub-workbench 1.

[0112] In the present invention, the end of the valve bag has been glued and pre-folded in certain cases, that is, the glued surface 25 can be turned up and stacked to perform the first step of gluing and complete the sealing operation.

[0113] In the present invention, the valve bag to be processed is in place, and the second cylinder 55 on the third frame 54 drives the fixed plate 56 to move downward, and the first claw plate 57 and the second claw plate 58 at the bottom of the fixed plate 56 fold up the two ends of the upper glue surface 25 and press them together; further, the first claw plate 57 and the second claw plate 58 respectively include a hinged bottom plate and a folding plate, that is, the two bottom plates are respectively inserted under the sub-workbench 1 and the upper glue surface 25 on one side, and under the bag body 26 and the upper glue surface 25 on the other side. The controller controls the hinge shaft to rotate, and the two folding plates will turn up the part to be folded, and the second cylinder 55 presses downward, thus completing the bonding operation.

[0114] In the present invention, in order to ensure the smooth passage of the valve bag, a gap must be provided between the first claw plate 57 and the sub-workbench 1, and the size of the gap can generally be adjusted based on the thickness of the valve bag.

[0115] In the present invention, after the pressing is completed, the second cylinder 55 is slightly loosened to continue to transport the valve bag backwards.

[0116] In the present invention, in order to adapt to valve bags of different models and sizes, since the first claw plate 57 cooperates with the transmission mechanism on the corresponding side and is not convenient to move, a screw nut pair 63 can be set between the bottom of the second claw plate 58 and the sub-workbench 1. By controlling the screw nut pair 63 and adjusting the distance between the first claw plate 57 and the second claw plate 58, different valve bags can be processed conveniently; the screw nut pair 63 can be controlled by a controller to control the motor, or it can be completed by manual adjustment.

[0117] In the present invention, the operation of the sealing unit can be controlled by directly calculating the transmission power of the transmission mechanism through the controller. Of course, it can also be controlled by setting an in-place sensor 64. When the rear end of the valve bag reaches the in-place sensor 64, the sealing unit starts to work, the valve bag is continuously transported backward, and the sealing unit performs the sealing operation.

[0118] In the present invention, the third cylinder 59 on the third frame 54 is used to lift and lower the sealing paper 61. A damping member should be provided between the reel 60 and the bottom of the third cylinder 59 to prevent the sealing paper 61 from idling. The sealing paper 61 is generally a single-sided adhesive paper, such as self-adhesive paper. In order to ensure the functionality of its adhesive surface, an outer cover 65 can be provided outside the combination of the sealing paper 61 and the reel 60.

[0119] In the present invention, the cutting of the sealing paper 61 can be completed by the paper cutting mechanism 62, that is, after the valve bag is sealed from the rear end to the front end, the sealing paper 61 is cut off by the paper cutting mechanism 62; the paper cutting mechanism 62 is a common cutting part, such as a tool similar to a paper cutter, and technical personnel in this field can set it according to their needs.

[0120] In the present invention, in order to ensure the direction and cutting of the sealing paper 61, generally speaking, the outer end of the sealing paper 61 is arranged toward the shaping unit, that is, during the backward transmission of the valve bag, the sealing paper 61 is instantly sealed from the rear end of the valve bag to the front end and is cut off after it is in place.

[0121] In the present invention, a pressurizing cylinder 66 may be arranged after the sealing unit, and the pressurizing cylinder 66 drives the pressing plate 67 to perform the final pressing and confirmation on the sealing paper 61 and the glued end of the valve bag.

[0122] The present invention also relates to a control method for the valve bag forming production line. The valve bag to be processed is mainly a bag body 26 to be glued at both ends. One side of the bag body 26 faces upward, and a fold parallel to the end is provided at the end of this side. After folding along this side, the gluing surface 25 is exposed at both ends of the bag body 26. The gluing surface 25 at one end is glued, and the valve mouth paper 68 is placed on the other end and then glued. Finally, the two wings of the gluing surface 25 are folded and overlapped. The valve bag thus obtained has sealed ends and a valve mouth is left at one end.

[0123] The method comprises the following steps:

[0124] Step 1: Initialize the pipeline and start the controller;

[0125] Step 2: Place the two end openings of the valve bag to be sealed toward the outside of the two sub-workbenches 1 respectively; adjust the two end openings of the valve bag to the state of being glued, and the end cutting mechanism cuts one end opening of the valve bag, and sets the valve opening paper 68 with glue at the end opening after the cutting;

[0126] Step 3: Adjust the relative position between the valve bag pre-adjustment mechanism and the valve bag so that the position of the valve bag to be glued is completely exposed to the outside of the transmission mechanism; start the transmission mechanism and transport the valve bag backward;

[0127] Step 4: In the finishing area 52, glue is added to the end opening of the valve bag corresponding to the valve mouth paper 68 provided with glue;

[0128] Step 5: The two ends of the valve bag are respectively raised to the feed surface through the corresponding outer guide rod 23 and the inner guide rod 24, and the end position of the valve bag to be folded is pressed by the embossing section 17 until a crease appears, and the end of the valve bag is flattened by the shaping section 16, and the end position of the valve bag is glued by the glue roller group 13 and then sent out from the rear end;

[0129] Step 6: The two ends of the valve bag run to the valve bag sealing mechanism, the first claw plate 57 and the second claw plate 58 are folded, the second cylinder 55 drives the fixing plate 56 to press down, and the ends of the valve bag are bonded;

[0130] Step 7: The valve bag continues to move forward, and the third cylinder 59 descends, and the sealing paper 61 with a glue layer is sealed to the top of the end of the valve bag;

[0131] Step 8: Valve pocket forming.

[0132] The present invention symmetrically arranges two sub-workbenches 1 on the assembly line, so that both ends of the valve bag can be glued, shaped and sealed at the same time; a valve bag pre-loading area 2, a valve bag gluing area 3 and a valve bag forming area 4 are arranged in sequence on the two sub-workbenches 1, and the valve bag to be processed is transported by a transmission mechanism, and an end cutting mechanism for cutting an end of the valve bag to facilitate the placement of valve port paper 68 and a valve bag clamping adjustment mechanism for pre-loading the initial position of the valve bag are arranged in the corresponding valve bag pre-loading area 2, a valve bag gluing mechanism for gluing both ends of the valve bag is arranged in the corresponding valve bag gluing area 3, and a valve bag sealing mechanism for packaging the valve bag is arranged in the corresponding valve bag forming area 4, and the operation of the entire assembly line is controlled by a controller.

[0133] The assembly line of the present invention automatically performs the forming process of the valve bag, assisted by manual labor, especially the core processes such as gluing, folding, and shaping are completed by machines, the process efficiency is greatly improved, the labor cost is low, the overall efficiency is high, the valve bag after forming is regular and not easy to debond, the scrap rate is low, it is green and energy-saving, and the production cost is reduced.

Claims

1. A valve bag forming production line, characterized by: The assembly line includes two symmetrically arranged sub-workbenches, on which a valve bag pre-installation area, a valve bag gluing area and a valve bag forming area are sequentially arranged; A transmission mechanism is provided between the two sub-workbenches corresponding to the valve bag pre-installation area, the valve bag gluing area and the valve bag forming area; An end cutting mechanism and a valve bag pre-adjusting mechanism are provided corresponding to the valve bag pre-installation area, a valve bag gluing mechanism is provided corresponding to the valve bag gluing area, and a valve bag sealing mechanism is provided corresponding to the valve bag molding area; The valve bag gluing mechanism comprises feed surfaces respectively arranged on two sub-workbenches, and a gluing unit is cooperatively arranged above the ends of the two feed surfaces; The glue coating unit comprises a first frame respectively straddling two sub-workbenches, a first motor is arranged on one side of the first frame, an output gear is arranged outside the output shaft of the first motor, a first gear set is arranged on one side of the first frame matching the output gear, and the first gear set comprises a first transmission gear; the first transmission gear is fixedly sleeved on one end of a transmission rod, the transmission rod passes through the first frame, a second transmission gear is sleeved on the other end matching the transmission rod, and a second gear set is arranged matching the second transmission gear on the other side of the first frame; A glue coating roller group is respectively provided on any feeding surface of the first gear group and the second gear group; the first motor is connected to the controller; A feed roller is provided on the feed surface on the front side of any of the glue coating roller groups, and a tension roller is provided at the rear end of the glue coating roller group that matches the feed roller; the feed roller is matched with the first gear group or the second gear group on the corresponding side; The feed roller comprises a shaping section and embossing sections arranged at both ends of the shaping section, a tensioning belt is arranged between the shaping section and the tensioning roller, and a pressure plate is arranged coaxially with the feed roller at one end of any embossing section facing the shaping section, and the two pressure plates of any feed roller are symmetrically arranged; Any of the feed surfaces comprises an outer feed surface and an inner feed surface arranged at the bottom of the corresponding glue coating roller group, and a gap is arranged between the outer feed surface and the inner feed surface; the front ends of the outer feed surface and the inner feed surface are respectively provided with an outer guide rod and an inner guide rod, the front end of the outer guide rod is in contact with the corresponding sub-workbench, and a gap is arranged between the front end of the inner guide rod and the corresponding sub-workbench, and the rear ends of the outer guide rod and the inner guide rod are inclined upward and respectively arranged to cooperate with the two sides of the gap; The transmission mechanism, the end cutting mechanism, the valve bag pre-adjustment mechanism, the valve bag gluing mechanism and the valve bag sealing mechanism are connected to a controller.

2. A valve bag forming production line according to claim 1, characterized in that: The end cutting mechanism includes a guillotine arranged at the front end of either side of the sub-workbench, and a guillotine groove is provided on the sub-workbench to match the guillotine; one end of the guillotine is hinged to the side end of the sub-workbench corresponding to the guillotine groove, and the other end of the guillotine is hinged to the output end of the bottom of the first cylinder, and the top of the first cylinder is connected to the sub-workbench through a bracket; the first cylinder is connected to the controller through an air source.

3. The valve bag forming production line according to claim 1, characterized in that: The transmission mechanism includes a plurality of tensioning and conveying units which are arranged in sections on opposite sides of two sub-workbenches and a plurality of rollers which are arranged between the opposite tensioning and conveying units; the plurality of tensioning and conveying units are arranged corresponding to the valve bag pre-installation area, the valve bag gluing area and the valve bag forming area; Any of the tensioning conveying units includes a first conveyor belt arranged along the conveying direction, a second conveyor belt is arranged below the first conveyor belt, a gap is provided between the first conveyor belt and the second conveyor belt, and the sub-workbench, the upper surface of the second conveyor belt and the top of the roller are located on the same horizontal plane; any of the first conveyor belt and / or the second conveyor belt is arranged in cooperation with the output end of the drive motor, and the drive motor is connected to the controller.

4. The valve bag forming production line according to claim 3, characterized in that: The valve bag pre-adjustment mechanism is arranged in cooperation with the transmission mechanism of the valve bag pre-installation area; The valve bag pre-adjustment mechanism includes a first mounting plate arranged in cooperation with the first conveyor belt, the first mounting plate includes an inverted right-angle piece and a horizontal pressing plate arranged on the side right-angle surface of the right-angle piece, the inner right-angle surface of any of the right-angle pieces is arranged in cooperation with the first conveyor belt on the corresponding side, and the horizontal pressing plate is arranged on the sub-workbench on the corresponding side; an adjusting piece is provided on the top of the upper right-angle surface of the right-angle piece, a waist-shaped hole is penetrated through the adjusting piece, and an adjustable nut is correspondingly provided between the waist-shaped hole and the upper right-angle surface of the right-angle piece, and the end of the adjusting piece is fixed to the second frame of the sub-workbench on the corresponding side by a detachable fixing rod; A first adjusting screw is provided on the side right-angled surface that passes through the two right-angled pieces, and a first adjusting nut is provided on the side right-angled surfaces of the two right-angled pieces that match the first adjusting screw; The valve bag pre-adjustment mechanism also includes a second adjusting screw arranged under the sub-workbench, the second adjusting screw is perpendicular to the transmission direction of the transmission unit, second adjusting nuts are arranged at both ends of the second adjusting screw, and a second mounting plate is arranged in conjunction with any second adjusting nut, and any second mounting plate is arranged in conjunction with the second conveyor belt on the corresponding side.

5. The valve bag forming production line according to claim 1, characterized in that: A finishing area is provided between the valve bag pre-installation area and the valve bag gluing area, and a glue gun is provided at the finishing area. The glue gun is arranged in cooperation with a controller.

6. The valve bag forming production line according to claim 1, characterized in that: The valve bag sealing mechanism comprises a third frame corresponding to any sub-workbench and a shaping unit and a sealing unit which are sequentially arranged to cooperate with any third frame; The shaping unit comprises a second cylinder arranged on a third frame, a fixing plate is arranged on the bottom of the second cylinder, a first claw plate and a second claw plate are arranged on the sub-workbench below the fixing plate; the first claw plate is arranged in cooperation with the transmission mechanism on the corresponding side, a gap is arranged between the first claw plate and the sub-workbench, and the second claw plate is arranged opposite to the corresponding first claw plate; The sealing unit comprises a third cylinder arranged on a third frame, a reel is hung at the bottom of the third cylinder, a sealing paper is wound around the reel, and the reel is arranged perpendicular to the transmission direction of the transmission mechanism; A paper cutting mechanism is provided on the side of the sub-workbench cooperating with the third cylinder and cooperating with the sealing paper; The second cylinder, the third cylinder, the first claw plate, and the second claw plate are connected to a controller.

7. A control method for a valve bag forming line according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: Step 1: Initialize the pipeline and start the controller; Step 2: Place the two end openings of the valve bag to be sealed toward the outside of the two sub-workbenches respectively; adjust the two end openings of the valve bag to the state of waiting for gluing, and the end cutting mechanism cuts one end opening of the valve bag, and sets the valve paper with glue at the end opening after the cutting; Step 3: Adjust the relative position between the valve bag pre-adjustment mechanism and the valve bag so that the position of the valve bag to be glued is completely exposed to the outside of the transmission mechanism; start the transmission mechanism and transport the valve bag backward; Step 4: In the finishing area, glue is added to the end opening of the valve bag corresponding to the valve mouth paper with glue; Step 5: The two ends of the valve bag rise to the feed surface through the corresponding outer guide rod and inner guide rod respectively, and the end position of the valve bag to be folded is pressed by the embossing section until a crease appears, and the end of the valve bag is flattened by the shaping section, and the end position of the valve bag is glued by the glue roller group and then sent out from the rear end; Step 6: The two ends of the valve bag run to the valve bag sealing mechanism, the first claw plate and the second claw plate are folded together, the second cylinder drives the fixed plate to press down, and the ends of the valve bag are bonded; Step 7: The valve bag continues to move forward, and the third cylinder descends, and the sealing paper with the adhesive layer is sealed to the top of the end of the valve bag; Step 8: Valve pocket forming.

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