High speed pasting machine

Abstract

The application discloses a high-speed bottom pasting machine, belongs to the field of automatic processing of square-bottom valve-mouth paper bags, realizes a bottom sealing processing procedure at both ends of the paper bag, solves the technical problem that a paper bag cannot be normally opened and closed due to a relatively large clamping valve-mouth paper width, and improves the running speed of the whole machine. The machine comprises a feeding device, an arrangement device, a score device, a bag bottom opening device, a valve-mouth inserting device, an inner reinforcing device, a bottom closing and forming device, an outer reinforcing device, a bottom turning device and a compacting and bag discharging device which are sequentially arranged along the conveying direction of the paper bag. The valve-mouth inserting device comprises a first rack, a reversing mechanism, a traction cutter mechanism, a paper feeding mechanism, a folding roller, a paper sticking cylinder and a gluing mechanism which are arranged on the upper and lower sides of the first rack. The reversing mechanism, the traction cutter mechanism and the paper feeding mechanism are sequentially arranged along the conveying direction of the paper belt. The paper belt is inserted into the folding roller, clamped by the paper sticking cylinder, pulled off and input into the gluing mechanism through the paper sticking cylinder. The paper feeding mechanism can move relative to the folding roller and the paper sticking cylinder.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of paper bag automatic processing, and particularly relates to a bottom pasting machine for processing the bottom of a paper bag at two ends. BACKGROUND

[0002] The existing paper bag is usually made by the following steps: 1, folding a rectangular paper strip along the middle vertical line of the long side and bonding the short side to obtain a bag cylinder with open front and back ends; 2, pressing a first transverse indentation and two slanting indentations which are 45° to the first transverse indentation and mirror images of each other at both ends of the bag cylinder; 3, opening the bag bottom along the first transverse indentation; 4, folding the two sides of the bag bottom inward along the left and right slanting indentations; 5, pressing a second transverse indentation on the inner side of the cylinder bag, and folding the bag bottom inward along the indentation to form a bottom sealing structure; and 6, bonding the bottom sealing structure with glue to obtain a finished paper bag. However, the paper bag for filling granular or powder products needs to process a valve port at the sealing position of the paper bag, the valve port is communicated with the inside of the paper bag, and the material is directly filled into the paper bag through the valve port; in order to increase the hardness and sealing performance of the valve port position, a valve port paper with different process requirements is usually inserted at the valve port position. Therefore, between the above steps 4 and 5, there is a step of inserting the valve port paper into the paper bag, that is, the paper strip is cut into valve port paper by traction, a piece of valve port paper is clamped and inserted into a paper bag cylinder, and the gluing and bonding are completed. The head of the paper strip needs to be folded, clamped and then transported to the corresponding position of the paper bag. For the cylindrical valve port paper bag and the large-bottom small-valve-port paper bag, the valve port paper strip needs to be formed into a cylinder first, and then cut into valve port paper and inserted into the corresponding position of the paper bag. At this time, if the width of the folded head of the paper strip is large, it will affect the normal opening and closing of the paper bag. Therefore, for such process paper bags, the head of the paper strip needs to be folded into the smallest width so that the clamping position of the head of the paper strip forms a zero folding position. SUMMARY

[0003] The purpose of the present application is to provide a high-speed bottom pasting machine which can ensure that the valve port paper is attached to the paper bag and that the cylindrical valve port of the paper bag can be normally opened and closed during the step of inserting the valve port paper into the paper bag.

[0004] According to one aspect of the present application, the high-speed bottom pasting machine comprises, in sequence along the conveying direction of the paper bag, a feeding device, an arranging device, an indentation device, a bag bottom opening device, a valve port inserting device, an inner reinforcing device, a bottom closing and forming device, an outer reinforcing device, a bottom folding device and a compacting and discharging device. The valve port inserting device comprises a first rack, a reversing mechanism, a traction cutter mechanism, a paper feeding mechanism, a folding roller, a paper sticking cylinder and a gluing mechanism which are installed on the upper and lower sides of the first rack. The reversing mechanism, the traction cutter mechanism and the paper feeding mechanism are arranged in sequence along the conveying direction of the paper strip. The paper strip is pressed into the paper sticking cylinder by the folding roller, clamped and cut off, and then input into the gluing mechanism through the paper sticking cylinder. The paper feeding mechanism can move relative to the paper sticking cylinder.

[0005] The rack comprises high roof, low roof and bottom plate arranged in parallel from top to bottom, the paper feeding mechanism comprises transmission mechanism and moving mechanism, one part of the transmission mechanism is installed between the bottom plate and the high roof, the other part of the transmission mechanism is installed on the moving mechanism, the moving mechanism can move relative to the paper tube, the transmission mechanism is provided with paper feeding channel, the paper feeding channel and the paper tube are provided with variable length paper cutting channel.

[0006] The moving mechanism comprises slide plate, the slide plate is parallel and slidingly installed on the bottom plate, the other part of the transmission mechanism is installed on the slide plate, the slide plate is arranged on one side of the folding roller and the paper tube, the transmission mechanism comprises first belt transmission mechanism and second belt transmission mechanism, the first belt transmission mechanism is arranged on one side of the paper tube, the second belt transmission mechanism is arranged on one side of the folding roller, the first belt transmission mechanism comprises first transmission belt, first traction roller and first driven roller, the first driven roller is vertically installed between the bottom plate and the high roof, the first traction roller is vertically installed between the slide plate and the low roof, the first transmission belt is installed on the first traction roller and the first driven roller and is tensioned by the first tensioning roller, the first tensioning roller is vertically installed on the bottom plate, the second belt transmission mechanism comprises second transmission belt, second traction roller and second driven roller, the second driven roller is vertically installed between the bottom plate and the high roof, the second traction roller is vertically installed between the slide plate and the low roof, the second transmission belt is installed on the second traction roller and the second driven roller and is tensioned by the second tensioning roller, the second tensioning roller is vertically installed on the bottom plate, the superimposed position of the first transmission belt and the second transmission belt is the paper feeding channel.

[0007] The first transmission belt is provided with first eccentric roller, first passing roller and second passing roller between the first traction roller and the first driven roller, the first eccentric roller and the first passing roller are vertically installed between the slide plate and the low roof, the second passing roller is vertically installed between the bottom plate and the high roof, the first transmission belt is installed on the straight line segment of the first eccentric roller and the first passing roller, the first transmission belt is installed on the straight line segment of the first passing roller and the first traction roller, the first transmission belt is installed on the straight line segment of the first traction roller and the first tensioning roller, and the three are parallel to each other; the second belt transmission mechanism is provided with second eccentric roller and third passing roller between the second traction roller and the second driven roller, the second driven roller is eccentric roller, the second eccentric roller is vertically installed between the slide plate and the low roof, the third passing roller is vertically installed between the bottom plate and the high roof, the second transmission belt is installed on the straight line segment of the second driven roller and the second eccentric roller, the second transmission belt is installed on the straight line segment of the second eccentric roller and the second traction roller, the second transmission belt is installed on the straight line segment of the second traction roller and the second tensioning roller, and the three are parallel to each other, the superimposed position of the straight line segment of the second transmission belt installed on the second driven roller and the second eccentric roller and the straight line segment of the first transmission belt installed on the first eccentric roller and the first passing roller is the paper feeding channel.

[0008] The feeding device comprises two parallel rotary tables, a rotatable paper suction assembly arranged between the two rotary tables, a hopper and a discharging mechanism arranged above the two rotary tables, the hopper and the discharging mechanism being located on the rotary path of the rotary tables, a front paper supporting assembly arranged on one side of the hopper, and a rear paper supporting and bag pressing assembly arranged on the other side of the hopper.

[0009] The arrangement device comprises an upper conveying belt and a lower conveying belt for clamping and conveying the paper bags, an arrangement conveying belt for arranging the paper bags at equal intervals, and a finishing conveying belt for abutting the bottom edges of the paper bags, the ends of the upper and lower conveying belts are provided with a double-bag rejection mechanism, and the end of the arrangement conveying belt is provided with a transition conveying assembly.

[0010] The indentation device comprises two sets of oblique indentation mechanisms and longitudinal cutter mechanisms symmetrically arranged along the two ends of the paper bags, the oblique indentation mechanisms and the longitudinal cutter mechanisms are sequentially arranged along the conveying direction of the paper bags, each set of oblique indentation mechanisms comprises two sets of oblique indentation cutters and oblique indentation idler wheels arranged from top to bottom, the indentation directions of the two sets of oblique indentation cutters are opposite, and each set of longitudinal cutter mechanisms comprises two sets of longitudinal cutters and longitudinal idler wheels arranged from top to bottom, and one set of longitudinal cutters and longitudinal idler wheels correspondingly comprises a transverse indentation wheel and a transverse indentation idler wheel.

[0011] The bag bottom opening device comprises a suction opening mechanism, an opening mechanism, and a flattening mechanism sequentially arranged along the conveying direction of the paper bags, the suction opening mechanism, the opening mechanism, and the flattening mechanism are symmetrically arranged along the two ends of the paper bags, the suction opening mechanism comprises a base plate, one side of the base plate is provided with an upper suction opening assembly and a lower suction opening assembly, the upper suction opening assembly and the lower suction opening assembly are symmetrically arranged along the two sides of the paper bags, the upper suction opening assembly and the lower suction opening assembly each comprise a crank, an air arm, an air shaft, and a gas distribution disc, one end of the crank is rotatably connected to the base plate, the air arm is provided with a plurality of bag suction nozzles, the air arm is sleeved with a shaft sleeve, the shaft sleeve is sleeved with a sliding sleeve, the sliding sleeve is provided with a rotating shaft, the rotating shaft is rotatably connected to the other end of the crank, the air arm is communicated with the air shaft, the air shaft is rotatably connected to the gas distribution disc, the gas distribution disc is rotatably connected to the base plate, a vacuum receiving disc is hermetically arranged between the gas distribution disc and the base plate, and the vacuum receiving disc is provided with a vacuum groove for communicating the air shaft and a suction pipe.

[0012] The bottom closing and forming device comprises an upper glue applying mechanism and a bottom closing mechanism sequentially arranged along the conveying direction of the paper bags, the upper glue applying mechanism and the bottom closing mechanism are symmetrically arranged along the two ends of the paper bags, the bottom closing mechanism comprises an upper bottom closing assembly and a lower bottom closing assembly, the upper bottom closing assembly comprises an upper supporting beam, an upper turning plate, and an upper core plate mounted on the upper supporting beam, and the lower bottom closing assembly comprises a lower supporting beam, a lower turning plate, and a lower core plate arranged on the lower supporting beam.

[0013] The bottom turning device comprises a bottom turning support rod mechanism and a compacting mechanism arranged in sequence along the paper bag conveying direction, the compacting mechanism is connected with an inclined waste bag removing mechanism, the bottom turning support rod mechanism, the compacting mechanism and the waste bag removing mechanism are symmetrically arranged along both ends of the paper bag, the bottom turning support rod mechanism comprises an upper supporting plate, a lower supporting plate and a cross arranged guide rod arranged along the paper bag conveying direction, and the ends of the upper supporting plate, the lower supporting plate and the guide rod are arranged at the inlet of the compacting mechanism.

[0014] The valve port inserting device is arranged, the front and back positions of the paper belt are accurately controlled through a knife edge, the length of the paper belt entering the paper clamping port is adjusted, the head of the paper belt is formed into zero folding position at the folding roller and the paper sticking cylinder, and normal opening and closing of the paper bag after the valve port paper is pasted is ensured. The gap between the glue mixing roller and the glue applying roller is adjustable, the glue application amount is controlled through adjustment of the gap, the utilization rate of the glue and the pasting effect of the valve port paper are increased, the glue mixing roller and the glue applying roller are assembled into a whole by the support, the whole is balanced and swung to achieve uniform glue applying effect, the glue applying wheel is swung to temporarily stop glue applying to the paper sticking cylinder to cope with different working conditions and avoid glue application to the surface of the paper sticking cylinder. The upper and lower suction opening components of the suction opening mechanism adopt a double crank mechanism of a crank, an air arm, a ventilation shaft and a gas distribution disc for parallelogram reciprocating rotation, also constitute a circular motion of a four-bar linkage mechanism, and realize suction and release of the bag suction nozzle along both sides of the paper bag port. The sliding sleeve structure is added at the connection between the air arm and the crank, the sliding sleeve slides on the air arm, the error of the center distance of the four-bar linkage mechanism is compensated, the rotation dead point position is avoided due to the center distance of the four-bar linkage mechanism, and the stability and service life of the mechanism operation are affected, the air arm always keeps horizontal, the suction position is ensured to be flat and not deformed, and the best suction opening effect of the bottom of the paper bag is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the high-speed bottom pasting machine of the present application;

[0016] Figure 2 It is a perspective view of the feeding device;

[0017] Figure 3 It is a front view of the feeding device;

[0018] Figure 4 It is a front view of the discharging mechanism;

[0019] Figure 5 It is a second perspective view of the feeding device;

[0020] Figure 6 It is a perspective view of the paper suction assembly;

[0021] Figure 7Figure 1 is a perspective view of the arrangement device (without carrier);

[0022] Figure 8 Figure 2 is a side view of the arrangement device (with carrier);

[0023] Figure 9 Figure 3 is a drive view of the arrangement mechanism;

[0024] Figure 10 Figure 4 is a schematic view of the double-bag rejection mechanism (part 1);

[0025] Figure 11 Figure 5 is a schematic view of the double-bag rejection mechanism (part 2);

[0026] Figure 12 Figure 6 is a perspective view of the indentation device (part 1);

[0027] Figure 13 Figure 7 is a perspective view of the indentation device (part 2);

[0028] Figure 14 Figure 8 is a perspective view of the indentation device combined with the bag bottom opening device;

[0029] Figure 15 Figure 9 is a perspective view of the suction opening mechanism (part 1);

[0030] Figure 16 Figure 10 is an exploded schematic view of the sliding sleeve structure;

[0031] Figure 17 Figure 11 is a perspective view of the suction opening mechanism (part 2);

[0032] Figure 18 Figure 12 is a perspective view of the opening mechanism;

[0033] Figure 19 Figure 13 is a perspective view of the delay mechanism of the opening mechanism;

[0034] Figure 20 Figure 14 is a perspective view of the flattening mechanism;

[0035] Figure 21 Figure 15 is a perspective schematic view of the valve port insertion device;

[0036] Figure 22 Figure 16 is a top schematic view of the valve port insertion device (without high roof and low roof);

[0037] Figure 23 Figure 17 is a perspective schematic view of the paper feeding mechanism (one view angle);

[0038] Figure 24 Figure 18 is a perspective schematic view of the paper feeding mechanism (another view angle);

[0039] Figure 25 Figure 19 is a perspective schematic view of the gumming mechanism (one view angle);

[0040] Figure 26 A three-dimensional schematic diagram of the gluing mechanism from another perspective;

[0041] Figure 27 This is a three-dimensional view of the bottom forming device;

[0042] Figure 28 This is one of the three-dimensional views of the gluing mechanism;

[0043] Figure 29 This is the second 3D view of the gluing mechanism;

[0044] Figure 30 A three-dimensional view of the bottom-closing mechanism;

[0045] Figure 31 This is a three-dimensional view of the bottom-flipping device;

[0046] Figure 32 This is a three-dimensional view of the bottom-flipping support mechanism;

[0047] Figure 33 This is a three-dimensional view of the compaction mechanism and the waste bag removal mechanism. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings.

[0049] like Figure 1 As shown, the high-speed paper bag gluing machine, along the paper bag conveying direction, sequentially includes the following paper bag processing steps: a feeding device A for conveying and feeding bag tubes; an arrangement device B for arranging and sorting bag tubes at equal intervals and removing two or more stacked bag tubes; an indentation device C for forming two sets of symmetrical oblique and transverse indentations at the bottom of the bag tubes and cutting off the cut; a bag bottom opening device D for sucking open and flattening the two ends of the bag tubes and expanding and flattening the bottom of the bag; and a valve insertion device E for inserting valve paper into the bottom of the paper bag (after the valve insertion device E is processed, a valve insertion device E' with the same structure is added). The high-speed bottom-gluing machine can be equipped with two valve insertion devices to create more different valve types; an inner reinforcement device F (with the same structure as valve insertion device E and symmetrically distributed at both ends of the paper bag) attaches an inner reinforcing strip to the bottom sealing area of ​​the paper bag; a bottom-sealing device G seals the bottom of the paper bag by forming and applying glue to both ends; an outer reinforcement device H (with the same structure as valve insertion device E and symmetrically distributed at both ends of the paper bag) attaches an outer reinforcing strip to the bottom sealing area of ​​the paper bag; a bottom-folding device I folds, flattens, compacts, and removes waste bags from the bottom of the paper bag; and a compacted bag-exit device J compacts and sends the paper bag out. All processes of this high-speed bottom-gluing machine are connected to a power system, which in turn is connected to a control system. The power system uses servo motor control, resulting in a higher degree of automation and more precise control. Furthermore, the production line of this high-speed bottom-gluing machine has a compact structure and a reasonable layout.

[0050] like Figure 2 , 3, 4, 5, 6, the feeding device A includes the first rack A1, the rack A1 is provided with the driving mechanism A2 and the rotating disc A4 and the paper suction assembly A5 driven by the driving mechanism A2;The side of the upper portion of the rack A1 is provided with a stock bin A3 for placing paper bags, and the other side of the upper portion of the rack A1 is provided with a discharging mechanism A8;One side of the stock bin A3 is provided with a front paper supporting assembly A9, and the other side of the stock bin A3 is provided with a rear paper supporting and bag pressing assembly A10.

[0051] The paper suction assembly A5 is provided with eight groups, and the eight groups of paper suction assemblies A5 are uniformly arranged around the rotation center circle of the rotating disc A4, and the paper suction assembly A5 is rotatably arranged on the rotating disc A4;The rotating disc A4 is also provided with a rotatable supporting shaft A46, and the supporting shaft A46 is provided with eight groups, and the supporting shaft A46 is located between the adjacent two paper suction assemblies A5;Wherein the stock bin A3 and the discharging mechanism A8 are arranged along the circumference of the rotating disc A4, so that the paper bags are sucked away from the stock bin A3 by the paper suction assembly A5 and sent to the discharging mechanism A8.

[0052] The rotating disc A4 includes disc bodies A41 at both ends and a core shaft A42 connecting the two disc bodies A41, wherein one of the disc bodies A41 is provided with a first transmission mechanism A7 for driving the rotation of the paper suction assembly A5, and the other disc body A41 is provided with a gas distribution mechanism A6 for the paper suction assembly A5;The paper suction assembly A5 includes a hollow shaft A51 rotatably arranged between the two disc bodies A41 of the rotating disc A4, a plurality of paper suction wheels A52 are sleeved on the hollow shaft A51, the paper suction wheel A52 is provided with a fan-shaped notch, and the notch of the paper suction wheel A52 is provided with a hollow rod body A53 and a guide wheel A54;The hollow rod body A53 is provided with a plurality of suction cups A532 arranged along the length direction thereof, the suction cup A532 is connected with the hollow rod body A53, the hollow rod body A53 is provided with a negative pressure interface A531 for communicating with the hollow shaft A51, and the hollow shaft A51 is connected with a negative pressure device (such as a vacuum pump) through the gas distribution mechanism A6;When the hollow shaft A51 is connected with the negative pressure, the suction cup A532 can have the adsorption capacity;Wherein the hollow rod body A53 is fixed to the hollow shaft A51 through the swing arm, so that the position of the hollow rod body A53 can be controlled by adjusting the angle of the swing arm, so that the suction cup A532 can more efficiently adsorb the paper bag.

[0053] The air distribution mechanism A6 includes an annular air distribution disc A61 fixed to a disc body A41 of the rotating disc A4, the air distribution disc A61 is coaxially arranged with the rotating disc A4, the position of the air distribution disc A61 corresponds to the position where the hollow shaft A51 is arranged, and the air distribution disc A61 is provided with air holes A611 corresponding to the hollow shaft A51, so that one end of the hollow shaft A51 can be connected with the air holes A611; the rack A1 is provided with an arc-shaped air distribution block A62 coaxially arranged with the air distribution disc A61, the surface of the air distribution block A62 is tightly attached to the surface of the air distribution disc A61; the arc-shaped air distribution block A62 is provided with an arc-shaped air groove on the side facing the air distribution disc A61, the diameter of the air groove is consistent with the rotary diameter of the air hole A611, that is, when the rotating disc A4 rotates, the air distribution block A62 remains stationary relative to the rack A1, the air distribution disc A61 rotates relative to the air distribution block A62, and the sealing is achieved by the tight attachment of the surfaces of the two, when the air hole A611 rotates to the position corresponding to the position of the air groove, the air groove is connected with the air hole A611; the air distribution block A62 is connected with the negative pressure device, so that the negative pressure can be generated at the suction disc A532 of the paper suction assembly A5. The air distribution block A62 is located on the path of the paper suction assembly A5 moving from the hopper A3 to the discharging mechanism A8, so that the suction disc A532 can stably adsorb the paper bag during the movement of the paper suction assembly A5 from the hopper A3 to the discharging mechanism A8.

[0054] The first transmission mechanism A7 includes a sun gear A71 coaxially arranged with the rotating disc A4, the sun gear A71 is rotatably connected with the rotating shaft of the rotating disc A4 through a bearing, an end cover is sleeved on the rotating shaft of the rotating disc A4, the end cover is fixed with the sun gear A71 and the rack A1, one end of the hollow shaft A51 penetrates through the end face of the other disc body A41 of the rotating disc A4, a reversing gear A72 is arranged between the sun gear A71 and the planetary gear A73, and the reversing gear A72 is rotatably arranged on the disc body A41 and is engaged with the sun gear A71 and the planetary gear A73.

[0055] The driving mechanism A2 drives the rotating disc A4 to rotate clockwise, and the planetary gear A73 rotates counterclockwise under the action of the sun gear A71 and the reversing gear A72, because the sun gear A71 is fixed to the rack A1. The bottom of the hopper A3 is throughly arranged, when any paper suction assembly A5 moves to the position of the hopper A3 with the rotating disc A4, there is a supporting shaft A46 on the rotating disc A4 which will contact the bottom surface of the paper bag, and the stacked paper bags in the hopper A3 are lifted up, and the lowermost paper bag is pressed on the suction disc A532 under the action of gravity, so that the suction disc A532 can better adsorb the bottommost paper bag; while the suction disc A532 of the paper suction wheel A52 sucks and pulls the paper bag, the rotation of the supporting shaft A46 can play a pushing role, so as to facilitate the extraction of the bottommost paper bag in the hopper A3; the vacuum adsorption method is adopted, so that the paper suction wheel A52 takes away only one paper bag each time when passing through the hopper A3.

[0056] The core shaft A42 of the rotating disc A4 is fixed with a core wheel A43, the core wheel A43 is provided with an arc surface at the corresponding position of the paper suction wheel A52, the core wheel A43 comprises a plurality of core wheel A43 units fixed to the outer surface of the core shaft A42. Due to the arrangement of the core wheel A43, the paper bag is adsorbed by the suction disc A532, and the paper bag at the bottom of the hopper A3 is wound by the rotation of the paper suction wheel A52. During the winding process, due to the arrangement of the arc surface on the core wheel A43, the paper bag is orderly wound by the paper suction wheel A52, the unnecessary stacking of the paper bag is reduced, and the paper bag sent out by the rotating disc A4 is kept flat.

[0057] The discharging mechanism A8 comprises a large pulley A81, a first lower supporting wheel A82 and a second lower supporting wheel A83, the large pulley A81, the first lower supporting wheel A82 and the second lower supporting wheel A83 are sleeved with a lower conveying belt A84. The rack A1 is respectively provided with a first upper supporting wheel A85, a second upper supporting wheel A86 and a third upper supporting wheel A87, the first upper supporting wheel A85, the second upper supporting wheel A86 and the third upper supporting wheel A87 are installed with an upper conveying belt A88, the outer side of the upper conveying belt A88 is attached to the outer side of the lower conveying belt A84, so that the upper conveying belt A88 and the lower conveying belt A84 form a conveying path in the shape of I, the paper bag is horizontally sent out, and the tension of the lower conveying belt A84 is in a suitable range through the swing of the tension swing arm A831. The driving mechanism A2 drives the rotation of the large pulley A81, and drives the movement of the lower conveying belt A84 in the process of movement of the lower conveying belt A84. The second lower supporting wheel A83 is connected with the rack through the tension swing arm A831 and the tension spring A832, the tension swing arm A831 is hinged with the rack, the second lower supporting wheel A83 is located at the end of the tension swing arm A831, and the tension spring A832 gives the second lower supporting wheel A83 a spring force away from the large pulley A81, so as to tension the lower conveying belt A84. When the paper suction wheel A52 enters the position of the feeding section A841 with the rotation of the rotating disc A4, the guide wheel A54 installed on the paper suction wheel A52 just rotates to the position of the feeding section A841 and is pressed to the feeding section A841, so that the paper bag cylinder is pressed to the feeding section A841 by the guide wheel A54, and then is transmitted upward to the discharging section A842 by the lower conveying belt A84, and is output from the discharging section A842.

[0058] The upper conveying belt A88 and the lower conveying belt A84 are arranged in several groups, the upper conveying belts A88 and the lower conveying belts A84 are evenly spaced, the sleeve roller A47 is sleeved on the support shaft A46, the position of the sleeve roller A47 corresponds to the gap between the adjacent lower conveying belts A84, and the sleeve roller A47 can pass through the gap between the adjacent lower conveying belts A4 during rotation of the rotating disc A4, so that the rotating diameter of the support shaft A46 is larger; when passing through the hopper A3, the sleeve roller A47 can better support and guide the paper bag, and the support shaft A46 with a larger rotating diameter does not interfere with the discharging mechanism A8, so that the discharging mechanism A8 is as close as possible to the rotating disc A4, and the paper bag is discharged more efficiently.

[0059] The driving mechanism A2 includes a driving motor A23 and a speed reducer A21 connected with the driving motor A23, and the output shaft of the speed reducer A21 is connected with the rotating disc A4 through two groups of synchronous wheels A22, the output end of one group of synchronous wheels A22 is coaxially arranged with the sun gear A71, and the output end of the other group of synchronous wheels A22 is coaxially arranged with the large pulley A81, so that the discharging mechanism A8 is cooperatively operated.

[0060] The working process of the feeding device A is as follows:

[0061] (1) Suction: the rotating disc A4 rotates clockwise, and the paper suction assembly A5 in the rotating disc A4 is close to the hopper A3, and the paper suction wheel A52 and the support shaft A46 rotate counterclockwise due to the action of the first transmission mechanism A7 during rotation of the rotating disc A4; when the corresponding hollow shaft A51 enters the position of the arc-shaped air distribution block A62, negative pressure is generated on the suction disc A532, and the suction disc A532 approaches the bottom paper bag of the hopper A3 with the rotation of the paper suction wheel A52; when the paper bag and the suction disc A532 are close enough to the paper bag, as shown in the position, the paper bag is adsorbed by the negative pressure on the suction disc A532; Figure 10

[0062] (2) Conveying: after the paper bag is sucked by the suction disc A532, the rotating disc A4 continuously rotates clockwise, and the paper suction wheel A52 rotates under the driving of the hollow shaft A51, so that the paper bag is wound on the paper suction wheel A52, and the arc surface on the core wheel A43 guides the paper bag, so that the paper bag is orderly wound on the paper suction wheel A52.

[0063] (3) Discharge: the rotating disc A4 continues to rotate, and rotates to the position as Figure 4 ​When the paper suction wheel A52 enters the position of the feeding section A841 with the rotation of the rotating disc A4, the guide wheel A54 installed on the paper suction wheel A52 is just rotated to the position of the feeding section A841 and is pressed against the feeding section A841, so that the paper bag cylinder is pressed against the feeding section A841 by the guide wheel A54 and is transmitted upwards to the discharging section A842 by the lower conveying belt A84 and is discharged from the discharging section A842.

[0064] As shown in Figures 7-9 The arrangement device B includes a frame, the frame is provided with an arrangement mechanism B2, a collating mechanism B3, a transition conveying assembly B4 and a double-bag removing mechanism B5.

[0065] The frame is provided with a feeding platform B15, the arrangement mechanism B2 includes an arrangement conveying belt B21 installed on the frame and provided with positioning edges B24 uniformly arranged on the surface, an upper conveying belt B22 and a lower conveying belt B23 for clamping paper bags; the collating mechanism B3 includes a collating conveying belt B36 for the bottom edge of the paper bag to abut against. The transition conveying assembly B4 is arranged at the end of the feeding platform B15. The upper conveying belt B22 and the lower conveying belt B23 are arranged above and below the feeding platform B15, the collating conveying belt B36 is arranged on one side of the feeding platform B15, the movement speed of the upper conveying belt B22 is slightly greater than that of the lower conveying belt B23, the conveying directions of the upper conveying belt B22 and the lower conveying belt B23 are inclined to the side of the collating conveying belt B36, and the inclination angle is small; the feeding platform B15 is provided with a plurality of gaps arranged in parallel, the surface of the arrangement conveying belt B21 is provided with a plurality of positioning edges B24 arranged uniformly and at intervals, the positioning edges B24 pass through the gaps arranged on the feeding platform B15 and extend out of the upper surface of the feeding platform B15.

[0066] The frame is provided with a first driving shaft B11 for driving the arrangement conveying belt B21, a second driving shaft B12 for driving the transition conveying assembly B4, a third driving shaft B13 for driving the lower conveying belt B23 and a fourth driving shaft B14 for driving the upper conveying belt B22; the first driving shaft B11 is installed on an arrangement driving pulley B18, an input pulley B16 drives the arrangement driving pulley B18 to move through belt transmission. The first driving shaft B11 and the second driving shaft B12 and the second driving shaft B12 and the third driving shaft B13 are all driven through belt transmission, the third driving shaft B13 and the fourth driving shaft B14 are driven through belt transmission, and the diameter of the pulley on the third driving shaft B13 is smaller than that of the pulley on the fourth driving shaft B14.

[0067] The arranging conveyor B36 is higher than the feeding platform B15. The beam B31 is provided with two groups of vertical belt wheels B37 matched with the arranging conveyor B36, one of which is driven by the third driving shaft B13 through a variable direction transmission assembly, which comprises a gear box B32 provided with two helical gears connected with the third driving shaft B13 and the vertical belt wheel B37 respectively, and the 90-degree transmission of the two is realized through the variable direction transmission assembly. The vertical belt wheel B37 and the third driving shaft B13 can also realize the 90-degree transmission through a cylindrical helical gear. The running speed of the arranging conveyor B36 is kept consistent with the conveying speed of the arranging conveyor B21 through the variable direction transmission assembly; the beam B31 is fixed with a vertically arranged guide plate B33; the inner side of the part of the arranging conveyor B36 in contact with the bottom edge of the paper bag abuts against the guide plate B33, so as to keep the straight conveying of the arranging conveyor B36 without deformation.

[0068] The adjusting assembly comprises two groups of adjusting lead screws B34 mounted on the sides of the frame, which are rotatably mounted on the frame and matched with the beam B31 to drive the beam B31 to move transversely. The adjusting of the bottom edge of the paper bag is realized by adjusting the position of the arranging conveyor B36 on the feeding platform B15, and the ends of the two groups of adjusting lead screws B34 are provided with adjusting hand wheels B35.

[0069] The transition conveying assembly B4 comprises a swing arm B42 mounted on both ends of the first supporting shaft B41 and a transition conveying wheel B44 mounted on the first supporting shaft B41. The swing arm B42 is connected with a tension spring shaft B421 fixed to the frame through a tension spring B422 and a tension spring column B423. Under the action of the tension spring B422, the swing arm B42 swings within a certain range after being stressed, so that the transition conveying belt B43 can better adhere to the surface of the paper bag. The transition conveying wheel B44 is provided with a belt wheel B45 through the transition conveying belt B43, the belt wheel B45 is fixed through a connecting rod B47 and a supporting shaft B46, and the supporting shaft B46 is arranged above the first supporting shaft B41. The first supporting shaft B41 is further provided with a punching sleeve B48, and the first supporting shaft B41 is driven by the second driving shaft B12 through a displacement gear B49. The second driving shaft B12 is provided with a groove roller B481 corresponding to the punching sleeve B48 and a roller B441 corresponding to the transition conveying wheel B44. The punching sleeve B48 and the groove roller B481 are provided with a paper pressing strip B461, and the paper pressing strip B461 is fixed to the supporting shaft B46 through a supporting plate B462.

[0070] The rack is provided with a second supporting shaft B25, which is provided with a first tension pulley B251 pressing on the upper conveying belt B22; the rack is provided with a third supporting shaft B26 located at the feeding end of the feeding platform B15, and the third supporting shaft B26 is sleeved with an upper swing arm B261 provided with a pulley B261a and a tension swing arm B262 provided with a tension pulley B262a. One end of the upper conveying belt B22 is sleeved on the pulley B261a of the upper swing arm B261, and the tension pulley B262a on the tension swing arm B262 abuts against the upper conveying belt B22; the upper swing arm B261 and the tension swing arm B262 are locked by screws and the third supporting shaft B26. The tension pulley B262a on the tension swing arm B262 is used to control the distance between the upper conveying belt B22 and the feeding platform B15, so as to keep the distance between the upper conveying belt B22 and the feeding platform B15 within a proper range; the pulley B261a on the upper swing arm B261 is used to sleeve the upper conveying belt B22, so as to better operate the upper conveying belt B22.

[0071] The paper bag is fed by the feeding device A, enters between the upper conveying belt B22 and the lower conveying belt B23, and is driven by the upper conveying belt B22 and the lower conveying belt B23 to enter the arrangement conveying belt B21. The running speed of the upper conveying belt B22 is slightly faster than that of the lower conveying belt B23, so that the front end edge of the paper bag is tightly attached to the positioning baffle B24 of the arrangement conveying belt B21 under the action of the upper conveying belt B22. Since the positioning baffles B24 on the arrangement conveying belt B21 are uniformly arranged, the distance between the adjacent paper bags is kept the same. The conveying direction of the upper conveying belt B22 and the lower conveying belt B23 has a certain angle with the conveying direction of the arrangement conveying belt B21. The angle is small, and in the process of conveying the paper bag, the bottom edge of the paper bag is offset to one side of the arrangement conveying belt B21, so that the bottom edge of the paper bag is tightly attached to the arrangement conveying belt B21, thereby keeping the horizontal position of each paper bag consistent. With the continuous conveying of the paper bag, the paper bag enters the transition conveying assembly B4, and is sent into the indentation device C by the transition conveying assembly B4. The transition conveying assembly B4 is used to keep the conveying speed of the paper bag consistent with the conveying speed of the indentation device C.

[0072] As Figure 4 , 8As shown in Figures 10 and 11, the double-bag rejection mechanism B5 includes an upper drive belt B532, a lower drive belt (i.e., a part of the upper conveyor belt B22), a drive wheel B531, a sensor B535, a double-bag frame B520, and a double-bag rejection device B540. The lower drive belt is connected to the drive wheel B531, which drives the lower drive belt to move cyclically. The upper drive belt B532 abuts against the lower drive belt. The sensor B535 is installed in the discharge section A842. The sensor B535 is used to detect the change in thickness between the upper conveyor belt A88 and the lower conveyor belt A84 when the paper bag tube passes through the discharge section A842, thereby determining whether there is double bag overlap. The upper drive belt B532 and the lower drive belt are equipped with a bag inlet B533 and a bag outlet B534. The dual-bag rejection device B540 includes a push cylinder B541, a roller assembly B542, and a bracket B543. The push cylinder B541 is electrically connected to a sensor B535. The piston rod of the push cylinder B541 extends and retracts at an acute angle to the horizontal plane.

[0073] The double-bag rejection process is as follows:

[0074] When sensor B535 does not detect a thickness change between the upper conveyor belt A88 and the lower conveyor belt A84, it can be determined that the paper bag tube being transported is a single paper bag tube. In this case, the push cylinder B541 does not operate, and the single paper bag tube moves along... Figure 11 The direction F shown (i.e. Figure 8 The transmission direction of the arrangement shown is normal.

[0075] When sensor B535 detects a thickness change between the upper conveyor belt A88 and the lower conveyor belt A84, it can determine that the conveyed paper bag tube is a double-overlapping paper bag tube, which needs to be rejected. At this time, sensor B535 sends a signal to the push cylinder B541. When the double-overlapping paper bag tube moves along... Figure 11 When the paper bag is conveyed to the position of the push cylinder B541 in the direction F, the piston cylinder of the push cylinder B541 extends, and the double-bag overlapping paper bag tube is transferred from the bag inlet B533 along the direction E through the roller group B542 into the bracket B543. At the same time, the push cylinder B541 retracts and waits for the sensor B535 to issue a new instruction to repeat the above double-bag rejection action.

[0076] like Figure 1 , 12 As shown in Figures 13 and 14, the creasing device C includes an oblique creasing mechanism C1, a longitudinal cutting mechanism C2, and a conveying mechanism C3 that drives the paper bag through the oblique creasing mechanism C1 and the longitudinal cutting mechanism C2. The conveying mechanism C3 is symmetrically distributed at both ends of the paper bag by means of a belt drive mechanism. The conveying mechanism C3 passes through the creasing device C, the bag bottom opening device D, the valve insertion device E, the valve insertion device E', the inner reinforcement device F, the bottom closing and forming device G, the outer reinforcement device H, and the bottom flipping device I in sequence.

[0077] The oblique indentation mechanism C1 includes two sets of oblique indentation knives C11 and oblique indentation pad wheels C12 arranged from top to bottom, the indentation directions of the two sets of oblique indentation knives C11 are opposite, and each set of oblique indentation knives C11 and oblique indentation pad wheels C12 is driven by an independent first gear transmission group C13. The longitudinal cutter mechanism C2 includes two sets of longitudinal cutters C21 and longitudinal pad wheels C22 arranged from top to bottom, and one set of longitudinal cutters C21 and longitudinal pad wheels C22 is correspondingly provided with a transverse indentation wheel C31 and a transverse indentation pad wheel C32. Each set of longitudinal cutters C21 and longitudinal pad wheels C22 is driven by an independent second gear transmission group C14.

[0078] The paper bag cylinder is a cylinder bag with both ends open and pressed into a rectangular shape before being sealed, laid flat, and fed into the indentation device C.

[0079] As shown in Figure 14 , the bag bottom opening device D includes an opening mechanism D1, an opening mechanism D2 and a flattening mechanism D3. The paper bag cylinder must be converted into a 45-degree opening form on both sides of the bag opening by the opening mechanism D1 before being sealed.

[0080] As shown in Figure 14 , 15 , 16, 17, the opening mechanism D1 is symmetrically distributed at both ends of the paper bag, and each opening mechanism D1 includes a base plate D101 vertically mounted on the paper bag bottoming machine. The rear side of the base plate D101 is provided with a gear transmission mechanism D102, and the front side of the base plate D101 is provided with an upper opening assembly D103 and a lower opening assembly D104. The upper opening assembly D103 and the lower opening assembly D104 are the same structure, and the upper opening assembly D103 and the lower opening assembly D104 are symmetrically arranged along the two sides of the paper bag to ensure the consistency of the opening amplitude of the upper and lower sides of the paper bag opening, better guarantee the next process of the paper bag bottoming machine, and improve the production efficiency of the paper bag.

[0081] The gear transmission mechanism D102 includes one driving wheel D105, two first gears D106, three intermediate wheels D107 and two second gears D108 arranged from top to bottom, the one driving wheel D105 is connected to a driving source, and the one driving wheel D105 is engaged with the two first gears D106. The upper intermediate wheel D107 is engaged with the two first gears D106, the lower two intermediate wheels D107 are engaged with the two second gears D108 respectively, the lower two intermediate wheels D107 are engaged with the upper intermediate wheel D107 respectively, and the two second gears D108 are connected to one end of the crank D109 of the lower opening assembly D104 and the air distribution disc D1012 respectively.

[0082] The upper suction opening assembly D103 and the lower suction opening assembly D104 each comprise a crank D109, an air arm D1010, a ventilation shaft D1011 and a gas distribution disc D1012. The upper end of the crank D109 is connected with a first gear D106, and the gas distribution disc D1012 is connected with another first gear D106. A vacuum receiving disc D1013 is arranged between the gas distribution disc D1012 and the base plate D101, and the vacuum receiving disc D1013 is supported on the base plate D101 through guide columns. The vacuum receiving disc D1013 is provided with a vacuum groove D1014, and the vacuum receiving disc D1013 and the vacuum groove D1014 are both arc-shaped. The vacuum groove D1014 is filled with a lubricating material, the gas distribution disc D1012 presses the vacuum groove D1014 and keeps the vacuum groove D1014 in a sealed state at all times, so that the vacuum groove D1014 has a self-lubricating function and reduces friction with the gas distribution disc D1012. The two sides of the vacuum groove D1014 are respectively connected with the ventilation shaft D1011 and a suction pipe D1015. The suction pipe D1015 penetrates out of the left side of the base plate D101, and the suction pipe D1015 is connected with a vacuum pump. The arc-shaped vacuum groove D1014 coincides with the movement track of the ventilation shaft D1011, realizing two movement states of the ventilation shaft D1011 moving in the vacuum groove D1014 and the ventilation shaft D1011 moving outside the vacuum groove D1014, so as to ensure that the vacuum process of the suction pipe D1015 and the suction and opening processes of the upper suction opening assembly D103 and the lower suction opening assembly D104 can be intermittently completed.

[0083] The rear end of the air arm D1010 is sleeved with a shaft sleeve D1016, the shaft sleeve D1016 is sleeved with a sliding sleeve D1017, the sliding sleeve D1017 is provided with a rotating shaft D1018, and the rotating shaft D1018 is rotationally connected with the lower end of the crank D109 through a rolling bearing D1024. The middle section of the air arm D1010 is connected with the ventilation shaft D1011. The ventilation shaft D1011 comprises a rotating shaft part D1011a and a sleeve part D1011b. The rotating shaft part D1011a is rotationally connected with the gas distribution disc D1012 through a rolling bearing, and the sleeve part D1011b is sleeved and connected with the air arm D1010. The air arm D1010 is provided with a plurality of bag suction nozzles D1019. The bag suction nozzles D1019 are arranged along the two sides of the ventilation shaft D1011. The bag suction nozzles D1019 on the two sides of the ventilation shaft D1011 are parallel and equally spaced. The bag suction nozzles D1019 are perpendicular to the air arm D1010, and the air arm D1010 and the bag suction nozzles D1019 along the two sides of the paper bag are in the same plane.

[0084] The driving source drives the main driving wheel D105 to rotate, the two first gears D106 drive the crank D109 and the air distribution disc D1012 of the upper suction opening assembly D103 to rotate, the two second gears D108 reversely drive the crank D109 and the air distribution disc D1012 of the lower suction opening assembly D104 to rotate, the gear transmission mode of the three intermediate gears D107 is adopted, which not only prolongs the center distance of the upper suction opening assembly D103 and the lower suction opening assembly D104, but also changes the rotation direction so that the rotation directions of the first gear D106 and the second gear D108 are opposite, thereby ensuring that the upper suction opening assembly D103 and the lower suction opening assembly D104 can move relatively.

[0085] Since the crank D109, the air arm D1010, the air shaft D1011 and the air distribution disc D1012 form a double crank mechanism (i.e. a four-bar linkage mechanism), the bag suction nozzle D1019 of the upper suction opening assembly D103 and the lower suction opening assembly D104 can make parallelogram reciprocating motion relative to the paper bag, and the bag suction nozzle D1019 can be adsorbed and released along the two sides of the paper bag opening. Since the four-bar linkage mechanism cannot guarantee that the size tolerance is zero during processing, as long as it is not zero, the four-bar linkage mechanism will certainly have a dead point position when rotating, which leads to the fact that the four-bar linkage mechanism is easy to be damaged. Therefore, the sliding sleeve D1017 slides on the air arm D1010 by an appropriate amount, which compensates for the size error of the four-bar linkage mechanism during processing, ensures that the first center distance D1020 between the air shaft D1011 and the crank D109, the second center distance D1021 between the air shaft D1011 and the air distribution disc D1012, the third center distance D1022 between the air distribution disc D1012 and the crank D109, and the fourth center distance D1023 between the crank D109 and the air arm D1010 are zero, avoids the dead point position in the rotating process of the four-bar linkage mechanism, and enables the four-bar linkage mechanism to work smoothly.

[0086] The air suction pipe D1015 continuously sucks the air by the vacuum pump, so that the vacuum tank D1014 is always in a vacuum state, i.e. in a suction state. When the upper and lower air supply shafts D1011 rotate in the vacuum tank D1014, the vacuum degree in the air supply shaft D1011 decreases due to the vacuum state of the vacuum tank D1014, thereby providing a suction force for the upper and lower bag air suction nozzles D1019. When the upper and lower air supply shafts D1011 rotate out of the vacuum tank D1014, the vacuum degree of the upper and lower air supply shafts D1011 returns to normal, and the upper and lower bag air suction nozzles D1019 no longer suck the upper and lower sides of the paper bag opening. The above process changes the paper bag opening from the fitted state to the state of being sucked open. This way solves the problem of unstable rotation of the paper bag opening, and improves the production efficiency of the paper bag bottoming machine.

[0087] As shown in Figure 14 、 18 , the opening mechanism D2 is symmetrically distributed at both ends of the paper bag. Each opening mechanism D2 is provided with a first driving shaft D211 rotatable about its own axis in the box D21. The first driving shaft D211 is connected to the main driving shaft through a universal joint. A main gear D22 rotatable about its own axis is installed in the box D21. The main gear D22 is provided with a joint fork D221 rotating with the main gear D22. The joint fork D221 is connected to a universal joint fork D222 rotatably installed on the box D21 through a cross shaft on both sides of the joint fork D221. The rotation axis of the universal joint fork D222 and the rotation axis of the main gear D22 are arranged at an acute angle. The universal joint fork D222 is connected to a tube D223 inserted into the paper bag bottom through rotation at one end relative to the cross shaft.

[0088] A delay mechanism is installed on the first driving shaft D211. A gear set for transmission is arranged between the delay mechanism and the main gear D22 in the box D21. In this embodiment, the delay mechanism includes a gear sleeve D23 sleeved on the first driving shaft D211 and rotatable relative to the first driving shaft D211. A second delay gear D232 coaxial with the first driving shaft D211 is fixed on the gear sleeve D23. The gear set includes a first transmission gear D231 fixed on the gear sleeve D23 and a second transmission gear D212 rotatably installed in the box D21. The second transmission gear D212 is meshingly connected to the first transmission gear D231 and the main gear D22 on both sides.

[0089] The time delay mechanism further comprises a second swing arm D24 fixed at the end of the first driving shaft D211. The second swing arm D24 is arranged radially outward relative to the first driving shaft D211. The second swing arm D24 is embedded with a positioning shaft D25 rotatable about its own axis at the end away from the first driving shaft D211. The axis of the positioning shaft D25 is parallel to the axis of the first driving shaft D211. A first time delay gear D251 and a slide rod D252 are respectively fixed at the two ends of the positioning shaft D25, and the first time delay gear D251 is in meshing connection with the second time delay gear D232.

[0090] A rotating shaft D26 is arranged in the slide rod D252 and is rotatably connected with the slide rod D252. The axis of the rotating shaft D26 is perpendicular to the extending direction of the slide rod D252, and the rotating shaft D26 can slide back and forth along the extending direction of the slide rod D252. A first slide block D261 is arranged outside the rotating shaft D26. In the initial state, the rotating shaft D26 is coaxially arranged with the first driving shaft D211.

[0091] A positioning flange D27 is arranged on the third rack D4, and a first worm gear D272 and a first worm D271 assembly are arranged in the positioning flange D27. In this embodiment, a radial extending sliding groove D273 is arranged in the first worm gear D272, and the first slide block D261 is embedded in the sliding groove D273 and can slide back and forth along the sliding groove D273. Limiting blocks D262 are arranged on both sides of the first slide block D261 and abut against the end faces of the first worm gear D272.

[0092] A fixing seat D28 is arranged on the side of the first worm gear D272 away from the second swing arm D24, and a third adjusting screw D281 is rotatably arranged in the fixing seat D28. In this embodiment, the fixing seat D28 is arranged at one end of the sliding groove D273. The axis of the third adjusting screw D281 is parallel to the extending direction of the sliding groove D273, and the third adjusting screw D281 is in threaded connection with the first slide block D261.

[0093] Before starting, the third adjusting screw D281 is driven to rotate about its own axis, at this time, the third adjusting screw D281 drives the first slide block D261 to slide along the sliding groove D273 relative to the first worm gear D272, so that the rotating shaft D26 approaches the positioning shaft D25. By driving the first worm D271 to rotate the first worm gear D272, the initial position of the rotating shaft D26 is changed to adjust the opening assembly D2, so that the tube D223 on the opening assembly D2 has the required time delay effect when it is turned to the maximum angle, that is, when the tube D223 is inserted into the bottom of the paper bag to the deepest position.

[0094] When the paper bag is conveyed to the position of the opening assembly D2 by the conveying belt, the main drive shaft drives the first drive shaft D211, so that the first drive shaft D211 drives the second swing arm D24 to rotate around the axis of the first drive shaft D211, and the second swing arm D24 drives the first time delay gear D251 and the slide rod D252 to rotate around the first drive shaft D211 and the rotating shaft D26 respectively through the positioning shaft D25. At this time, the first time delay gear D251 drives the second time delay gear D232 on the gear sleeve D23 to rotate around the first drive shaft D211 through the meshing, and then the first drive gear D231 on the gear sleeve D23 drives the main gear D22 to rotate through the second drive gear D212, so that the main gear D22 rotates to drive the joint fork D221 to rotate, the joint fork D221 drives the push pipe D223 through the cross shaft and the universal joint fork D222, so that the push pipe D223 is inserted into the bottom opening of the paper bag to gradually open the bottom of the paper bag.

[0095] In this process, when the first drive shaft D211, the positioning shaft D25 and the rotating shaft D26 rotate out of the same plane and then are located in the same plane, the first time delay gear D251 and the second time delay gear D232 will rotate relative to each other, at this time, the first time delay gear D251 gives the second time delay gear D232 an action force opposite to the rotating direction of the first drive shaft D211, so that the first drive gear D231 does not continue to rotate with the first drive shaft D211, and then the push pipe D223 inserted into the bottom of the paper bag is kept for a short time when it rotates to the maximum angle, so as to maintain the posture of the opened bottom of the paper bag.

[0096] As shown in Figure 14 , 20 The flattening mechanism D3 is symmetrically distributed at both ends of the paper bag, and each flattening mechanism D3 comprises a nylon flattening wheel D31 rotatingly arranged on the third rack D4. The nylon flattening wheel D31 is symmetrically extended in the axial direction at both ends thereof, and a cylindrical flattening roller D311 is arranged at each end. A plurality of roller grooves D312 are evenly arranged on the outer circumferential surface of the flattening roller D311 in the axial direction.

[0097] A positioning plate D32 is fixed on the third rack D4, and the extending direction of the positioning plate D32 is perpendicular to the axis of the flattening roller D311 and parallel to the conveying direction of the paper bag. In this embodiment, a plurality of groups of screw holes are arranged side by side on the positioning plate D32 in the extending direction, and a positioning block D331 is fixedly arranged on the screw holes through bolts. A supporting steel plate D33 is arranged on the side of the positioning block D331 away from the positioning plate D32 through bolts, and the supporting steel plate D33 is located between the positioning plate D32 and the nylon flattening wheel D31. The extending direction of the supporting steel plate D33 is parallel to the extending direction of the positioning plate D32 and is located on the side of the positioning plate D32 away from the opening mechanism D2.

[0098] The nylon wheel D332 is installed on the side of the supporting steel plate D33 opposite to the nylon flattening wheel D31. The nylon wheel D332 is symmetrically arranged in two groups on the side of the supporting steel plate D33 opposite to the opening mechanism D2, and the axis of the nylon wheel D332 is parallel to the axis of the nylon flattening wheel D31.

[0099] The upper tensioning wheel group is installed on both sides of the positioning plate D32. In the embodiment, the upper tensioning wheel group comprises the first tensioning wheel D321 and the second tensioning wheel D322 arranged in sequence along the extending direction of the positioning plate D32, and the rotating axes of the first tensioning wheel D321 and the second tensioning wheel D322 are parallel to the axis of the nylon flattening wheel D31.

[0100] The lower tensioning wheel group is installed on both sides of the supporting steel plate D33. In the embodiment, the lower tensioning wheel group comprises the third tensioning wheel D333 and the fourth tensioning wheel D334 arranged in sequence along the extending direction of the supporting steel plate D33, and the rotating axes of the third tensioning wheel D333 and the fourth tensioning wheel D334 are parallel to the axis of the nylon flattening wheel D31. The inclined angle plate D335 is fixed on the supporting plate D11 between the fourth tensioning wheel D334 and the nylon wheel D332.

[0101] The flattening conveying belt D323 is sequentially wound around the nylon wheel D332, the nylon flattening wheel D31, the upper tensioning wheel group and the lower tensioning wheel group in sequence. In the embodiment, the flattening conveying belt D323 is connected in cross transmission between the second tensioning wheel D322 and the third tensioning wheel D333, and between the third tensioning wheel D333 and the fourth tensioning wheel D334, and is connected in open transmission between the fourth tensioning wheel D334 and the nylon wheel D332, between the nylon wheel D332 and the nylon flattening wheel D31, between the nylon flattening wheel D31 and the first tensioning wheel D321, and between the first tensioning wheel D321 and the second tensioning wheel D322.

[0102] At this time, the paper bag to be opened is continuously conveyed to the entrance of the flattening mechanism D3 by the conveying belt. The bottom of the paper bag first contacts the flattening conveying belt D323 between the fourth tensioning wheel D334 and the nylon wheel D332, then enters between the flattening conveying belt D323 and the conveying belt along the inclined angle plate D335, and is sequentially flattened by the nylon wheel D332 and the nylon flattening wheel D31, and is finally output from the conveying end of the flattening mechanism D3.

[0103] When the distance between the nylon wheel D332 and the nylon flattening wheel D31 needs to be adjusted to adapt to different sizes of paper bags, loosen the bolts between the positioning block D331 and the positioning plate D32, and then install the positioning block D331 to the next set of screw holes on the positioning plate D32 with bolts. The distance between the nylon wheel D332 and the nylon flattening wheel D31 is adjusted. In this process, the distance between the nylon wheel D332 and the nylon flattening wheel D31 is getting larger, while the distance between the second tensioning wheel D322 and the third tensioning wheel D333 is getting smaller; the distance between the nylon wheel D332 and the nylon flattening wheel D31 is getting smaller, while the distance between the second tensioning wheel D322 and the third tensioning wheel D333 is getting larger. The flattening conveyor belt D323 is always in a state of tension.

[0104] In this embodiment, a supporting mechanism D2 is arranged between the suction mechanism D1 and the flattening mechanism D3, and a delay mechanism is arranged on the supporting mechanism D2. When the bottom of the paper bag is separated from the vacuum chuck, the supporting mechanism D2 is inserted into the bottom of the paper bag and stays for a short time to maintain the posture of the supporting bottom of the paper bag. When the paper bag enters the inlet of the flattening mechanism D3, the bottom of the paper bag is not easily closed again, effectively avoiding the possibility of deviation of the subsequent extrusion crease position. After processing, the paper bag enters the valve port insertion device E.

[0105] As shown in Figures 21-26 The valve port insertion device E is symmetrically distributed at both ends of the paper bag. Each valve port insertion device E includes a reversing mechanism 100, a traction cutter mechanism 200, a paper feeding mechanism 300, a folding roller 4, a paper tube 5, and a gluing mechanism 600. The frame includes a high top plate 10, a low top plate 11, and a bottom plate 1 arranged in parallel from top to bottom. The paper tape in roll form is input through the reversing mechanism 100, the traction cutter mechanism 200, and the paper feeding mechanism 300, and is output from between the rotating folding roller 4 and the paper tube 5, and is input into the gluing mechanism 600 through the paper tube 5.

[0106] The reversing mechanism 100 includes an oblique roller 101, a fourth passing roller 102, and a fifth passing roller 103. The oblique roller 101 is connected between the high top plate 10 and the bottom plate 1, the fourth passing roller 102 is vertically installed on the bottom plate 1, and the fifth passing roller 103 is vertically arranged between the bottom plate 1 and the low top plate 11. In order to ensure the sealing performance of the valve port, the valve port paper and the film need to be used in combination. The film usually uses plastic film such as PE film. The paper tape and the film are first reversed through the oblique roller 101, and then input between the traction roller 201 and the paper pressing roller 202 through the fourth passing roller 102 and the fifth passing roller 103.

[0107] The traction cutter mechanism 200 comprises a traction roller 201, a paper pressing roller 202, a moving cutter assembly 203, a fixed cutter assembly 204, a pressing roller 205, an adjustable pressing roller 206 and a film displacement roller 207. The second servo motor 801 of the fourth belt transmission mechanism 800 drives the traction roller to rotate through the belt transmission of the third belt wheel 804, and drives the pressing roller 205 to rotate through the belt transmission of the fourth belt wheel 805. The pressing roller 205 drives the adjustable pressing roller 206 to rotate through the gear transmission. The adjustable pressing roller 206 adjusts the gap between the pressing roller 205 and the adjustable pressing roller 206 through the screw rod mechanism, so as to adjust the pressing degree of the adjustable pressing roller 206 relative to the pressing roller 205. The third servo motor 2031 installed on the low top plate 11 drives the moving cutter assembly 203 to rotate. The paper tape and the film pass between the traction roller 201 and the paper pressing roller 202, and are driven to convey under the traction of the traction roller 201. In the rotating process of the moving cutter assembly 203, the cutting edge of the moving cutter assembly 203 contacts the cutting edge of the fixed cutter assembly 204, and the cutting of the paper tape and the film is completed through the tangential motion. The paper tape and the film complete the film-paper displacement through the film displacement roller 207, and are adhered to each other through the pressing of the pressing roller 205 and the adjustable pressing roller 206, and finally input into the paper conveying channel 9.

[0108] The paper conveying mechanism 300 comprises a transmission mechanism 2 and a moving mechanism 3. The folding roller 4 and the paper sticking cylinder 5 are vertically installed between the bottom plate 1 and the high top plate 10 and abut against each other. The high top plate 10 is provided with a gear transmission mechanism 700. The first servo motor 701 of the gear transmission mechanism 700 drives the folding roller 4 to rotate through the gear transmission of the first gear wheel 702, and drives the paper sticking cylinder 5 to rotate through the gear transmission of the second gear wheel 703. The folding roller 4 comprises a folding cylinder body 41. A folding shaft 42 is arranged along the folding cylinder body 41. A folding piece 43 is fixed along the folding shaft 42. The folding piece 43 extends from the folding cylinder body 41. The end of the folding cylinder body 41 is provided with a cam assembly for controlling the swing of the folding piece 43. The paper sticking cylinder 5 comprises a paper sticking cylinder body 51. A clamping opening 52 is arranged along the paper sticking cylinder body 51. A clamping shaft 53 is arranged in the clamping opening 52. A clamping piece 54 is fixed along the clamping shaft 53. The end of the paper sticking cylinder body 51 is provided with a cam assembly for controlling the swing of the clamping piece 54. The opening and closing of the clamping opening 52 are controlled through the reciprocating swing of the clamping piece 54. The paper sticking cylinder body 51 is sleeved with a paper pressing belt 55. The clamping piece 54 is provided with a gap 56 for the paper pressing belt 55 to pass through. The cam assemblies of the folding roller 4 and the paper sticking cylinder 5 have the same control principle. The cam assembly comprises a cam 6, a driven wheel 7 and a swing arm 8. The cam 6 abuts against the driven wheel 7. The driven wheel 7 is connected with the swing arm 8. The swing arm 8 is connected with the folding shaft 42 or the clamping shaft 53. A cylinder is adopted to drive the cam 6 to rotate. The cam 6 pushes the driven wheel 7 and drives the swing arm 8 to swing, so as to drive the folding shaft 42 and the folding piece 43 or the clamping shaft 53 and the clamping piece 54 to swing.

[0109] The moving mechanism 3 comprises a slide plate 31, which is arranged at the right side of the folding roller 4 and the paper tube 5, is parallel to the bottom plate 1, is arranged obliquely with the bottom plate 1, is correspondingly installed on two parallel guide rails 33 arranged along the length direction of the slide plate 31 through a sliding block 32, and each guide rail 33 is installed on the bottom plate 1. The servo motor 36 drives a belt transmission mechanism 34, the belt transmission mechanism 34 drives a screw mechanism 35, the screw mechanism 35 drives the sliding block 32 on the slide plate 31 to slide along the guide rail 33, so as to realize the sliding of the slide plate 31 relative to the bottom plate 1. According to the different lengths of the valve port paper, the sliding position of the slide plate 31 relative to the bottom plate 1 is flexibly adjusted, and the process is driven by the motor, which is simple and labor-saving.

[0110] The transmission mechanism 2 comprises a first belt transmission mechanism 21 and a second belt transmission mechanism 22, and the first belt transmission mechanism 21 is arranged at one side of the paper tube 5. The first belt transmission mechanism 21 comprises a first transmission belt 211, and a first driven roller 212, a first eccentric roller 213, a first passing roller 214, a first traction roller 215, a first tensioning roller 216 and a second passing roller 217 are sequentially arranged in the counterclockwise direction of the first transmission belt 211. The first driven roller 212 and the second passing roller 217 are both vertically installed between the bottom plate 1 and the high top plate 10, and the first tensioning roller 216 is vertically installed on the bottom plate 1. The first eccentric roller 213, the first passing roller 214 and the first traction roller 215 are all vertically installed between the slide plate 31 and the low top plate 11. The transmission part of the first transmission belt 211 where the first driven roller 212, the first eccentric roller 213 and the first passing roller 214 are arranged is in a straight line shape, the traction part of the first transmission belt 211 where the first passing roller 214, the first traction roller 215 and the first tensioning roller 216 are arranged is in an inverted U shape, and the transmission part of the first transmission belt 211 where the first tensioning roller 216, the second passing roller 217 and the first driven roller 212 are arranged is in a triangular shape.

[0111] The second belt transmission mechanism 22 is on the side of the folding roller 4. The second belt transmission mechanism 22 comprises a second transmission belt 221, and a second driven roller 222, a second eccentric roller 223, a second traction roller 224, a second tensioning roller 225, and a third over roller 226 are sequentially installed along the clockwise direction of the second transmission belt 221. The second driven roller 222 is an eccentric roller, and the second driven roller 222 and the third over roller 226 are both vertically installed between the bottom plate 1 and the high top plate 10, and the second tensioning roller 225 is vertically installed on the bottom plate 1. The second eccentric roller 223 and the second traction roller 224 are both vertically installed between the slide plate 31 and the low top plate 11. The transmission straight line segment of the second transmission belt 221 where the second driven roller 222 and the second eccentric roller 223 are located and the transmission straight line segment of the first transmission belt 211 where the first eccentric roller 213 and the first over roller 214 are located are superimposed at the paper feeding channel 9, and the paper feeding channel 9 is opposite to the abutting position of the folding roller 4 and the paper sticking cylinder 5. The traction part of the second transmission belt 221 where the second eccentric roller 223, the second traction roller 224, and the second tensioning roller 225 are located is in an inverted U shape, and the transmission part of the second transmission belt 221 where the second tensioning roller 225, the third over roller 226, and the second driven roller 222 are located is in a triangular shape.

[0112] The low top plate 11 is provided with a fourth belt transmission mechanism 800. The second servo motor 801 of the fourth belt transmission mechanism 800 drives the first traction roller 215 to rotate to generate traction power through the driving of the first belt wheel 802, and drives the second traction roller 224 to rotate to generate traction power through the driving of the second belt wheel 803, so that the first transmission belt 211 and the second transmission belt 221 are pressed to transmit the paper tape between the folding cylinder 41 and the paper sticking cylinder 51.

[0113] The first over roller 214 and the first traction roller 215 move together with the slide plate 31. The length of the first transmission belt 211 where the first over roller 214 and the first traction roller 215 are located is unchanged and parallel to the paper feeding channel 9, and also parallel to the first transmission belt 211 where the first traction roller 215 and the third over roller 216 are located. Therefore, the length of the first transmission belt 211 is unchanged during the sliding process of the slide plate 31. Similarly, the second eccentric roller 223 and the second traction roller 224 move together with the slide plate 31, and the length of the second transmission belt 221 is also unchanged during the sliding process of the slide plate 31.

[0114] Further, the paper tape is pressed in the middle position between the first eccentric roller 213 and the first over roller 214 in the paper feeding channel 9 by adjusting the first eccentric roller 213. The folding cylinder 41 and the paper tape cylinder 51 rotate synchronously, the folding piece 43 swings to press the head of the paper tape into the clamp 52, and the clamp piece 54 swings to close the clamp 52, so as to clamp the end of the paper tape in the clamp 52. Since the conveying speed of the first transmission belt 211 and the second transmission belt 221 is less than the rotating speed of the folding roller 4 and the paper tape cylinder 5, the paper tape is pulled off into the valve port paper sheet along the cutting position in the cutting channel 12 between the first eccentric roller 213 and the paper tape cylinder 51 by the speed difference between the two, and the length of the valve port paper sheet is different due to the different sizes of the paper bag. The length of the cutting channel 12 is controlled by sliding the adjusting slide plate 31 relative to the bottom plate 1, so as to ensure that there is only one cutting position between the first eccentric roller 213 and the paper tape cylinder 51, and the paper tape will not be pulled off into two valve port paper sheets. The clamp 52 clamps the valve port paper sheet to convey it to the position of the paper bag, and after being conveyed to the position, the clamp piece 54 is released, the paper tape belt 55 is separated from the gap 56, and the paper tape belt 55 takes the valve port paper sheet out of the clamp 52, so as to convey the valve port paper sheet to the corresponding position of the paper bag and paste it into the paper bag after being glued.

[0115] The length of the paper tape entering the clamp is adjusted, the front and back positions of the paper tape are adjusted by the precise control of one cutting position and the servo adjustment, and the head of the paper tape is formed in the zero folding position of the folding roller 4 and the paper tape cylinder 5, so as to ensure the normal opening and closing of the paper bag after the valve port paper is pasted.

[0116] The gluing device 600 comprises a glue mixing roller 601, a glue applying roller 602 and a glue applying wheel 603, the paper tape cylinder 5 and the glue applying wheel 603 are installed between the high top plate 10 and the bottom plate 1, the first servo motor 701 of the gear transmission mechanism 700 drives the third gear 704 to rotate the glue applying wheel 603 through gear transmission, both ends of the rotating shaft of the glue applying wheel 603 are installed with swing plates 6031, one end of the two swing plates 6031 is connected through a second rotating shaft 6032, both ends of the second rotating shaft 6032 are installed on the high top plate 10 and the bottom plate 1 respectively. The swing plate 6031 located on the upper side is connected with a first air cylinder 6033, and the first air cylinder 6033 is installed on the high top plate 10. The first air cylinder 6033 drives the swing plate 6031 to swing relative to the second rotating shaft 6032, and the swing plate 6031 drives the glue applying wheel 603 to approach the paper tape cylinder 5 in the swinging process until the glue applying wheel 603 is attached to the paper tape cylinder 5, so as to glue the valve port paper on the paper tape cylinder 5; when the front end of the paper bag bottom pasting machine detects that there is no paper bag or the bottom of the paper bag is not normally opened, the swing of the swing plate 6031 is driven through the first air cylinder 6033, the swing plate 6031 drives the glue applying wheel 603 to move away from the paper tape cylinder 5, and the gluing is stopped, so that the glue cannot be applied to the paper tape cylinder 5.

[0117] The lower side of the glue spreading wheel 603 is provided with a glue receiving tray 604, which is installed on the bottom plate 1 and is provided with a glue return port 6041. One side of the glue spreading wheel 603 is provided with a partition plate 6034, which is installed between the upper and lower swing plates 6031 to separate the glue spreading wheel 603 from the folding roller 4. The partition plate 6034 is used to shield the glue splashed from the surface of the glue spreading wheel 603, so as to prevent the glue from splashing onto the folding roller 4. The splashed glue is collected in the glue receiving tray 604 and is recycled through the glue return port 6041.

[0118] The support frame includes an upper support plate 605 and a lower support plate 606. The glue mixing roller 601 and the glue applying roller 602 are installed between the upper support plate 605 and the lower support plate 606. The two sides of the glue applying roller 602 are provided with glue blocking plates 6021, which are installed between the upper support plate 606 and the lower support plate 606. The glue blocking plates 6021 prevent the glue on the glue applying roller 602 from splashing out of the two sides, but flows along the lower end of the glue applying roller 602 into the glue receiving tray 604. The bottom of the glue mixing roller 601 is provided with a blocking plate 6011, which is installed on the lower support plate 606, so as to limit the glue below the glue mixing roller 601 from splashing out, but flows along the lower end of the glue mixing roller 601 and the lower support plate 606 into the glue receiving tray 604. One end of the upper support plate 605 and the lower support plate 606 is connected through a first rotating shaft 6061, the two ends of the first rotating shaft 6061 are respectively installed on the high top plate 10 and the bottom plate 1. The upper support plate 605 is connected with a second air cylinder 6051, which is installed on the high top plate 10. The support frame assembles the glue mixing roller 601 and the glue applying roller 602 into a whole. The second air cylinder 6051 drives the support frame to swing in balance relative to the first rotating shaft 6061. When the support frame swings to the state that the glue applying roller 602 is attached to the glue spreading wheel 603, the glue applying starts, which ensures that the glue applying roller 602 is fully and evenly coated by the glue mixing roller 601 before the glue is evenly applied to the glue spreading wheel 603.

[0119] One end of the glue mixing roller 601 and the glue applying roller 602 is driven through gear meshing. The gears 6021 on the glue applying roller 602 are connected with a fifth belt transmission mechanism 607, which is driven by a fourth servo motor 6071. The glue mixing roller 601 and the glue applying roller 602 are attached. The adjusting assembly 608 includes a hand wheel 6084 and a screw rod 6081. The hand wheel 6084 is arranged at one end of the screw rod 6081. The two ends of the glue mixing roller 601 are respectively slidably installed on the sliding grooves 6083 through rotating seats 6082. Each rotating seat 6082 is correspondingly connected with the other end of the screw rod 6081. Rotating the hand wheel 6084 drives the rotating seat 6082 to slide along the sliding groove 6083 through the screw transmission of the screw rod 6081. The rotating seat 6082 drives the glue mixing roller 601 to offset relative to the glue applying roller 602, so as to adjust the gap between the glue mixing roller 601 and the glue applying roller 602, and further control the amount of glue passing through the glue mixing roller 601 into the glue applying roller 602.

[0120] AsFigure 23 、 24 As shown in FIG. 25, the bottom closing forming devices G are symmetrically distributed at both ends of the paper bag, each of which comprises a gumming mechanism G7 and a bottom closing mechanism G8. The gumming mechanism G7 comprises a second glue receiving disc G71, a glue mixing roller G72, a gumming roller G73 and a glue spreading wheel G74, all of which are vertically installed on the vertical rack G1. The glue mixing roller G72 is placed in the second glue receiving disc G71, and the glue mixing roller G72 and the gumming roller G73 are in abutment. The gumming roller G73 is in abutment with the glue spreading wheel G74, which is used for sticking glue. The glue spreading wheel G74 is driven to rotate by the first belt transmission mechanism G100. The glue mixing roller G72 and the gumming roller G73 are driven to rotate by the second belt transmission mechanism G200 and the first gear transmission mechanism G300.

[0121] The gumming mechanism G7 further comprises an upper supporting wheel G75, a lower supporting wheel G76, an upper stamping wheel G77 and a lower stamping wheel G78. The upper supporting wheel G75 and the lower supporting wheel G76 are opposite to the glue spreading wheel G74. The distance between the upper supporting wheel G75 and the lower supporting wheel G76 and the glue spreading wheel G74 is adjusted by rotating the upper supporting wheel G75 and the lower supporting wheel G76 around the positioning shaft G762 through the stretching air cylinder G79 and the push-pull fixed block G761. The transmission belt of the third belt transmission mechanism G400 has a tangent section to the glue spreading wheel G74, which is located between the upper supporting wheel G75 and the lower supporting wheel G76. The upper stamping wheel G77 and the lower stamping wheel G78 adjust the height through the sliding block G501, the guide rail G502 and the screw G503. The upper stamping wheel G77 and the lower stamping wheel G78 are driven to rotate by the first belt transmission mechanism G100 and the second gear transmission mechanism G500.

[0122] The closing mechanism G8 comprises a frame G1, and the connecting seat G3 is provided with a rotatable support frame G4, and the two are fixed by fasteners. The support frame G4 is provided with two groups of vertically arranged slide rods G41, and the two groups of slide rods G41 are connected with the upper closing assembly G5 and the lower closing assembly G6. The upper closing assembly G5 comprises an upper support beam G51, and an upper flap G52 and an upper core plate G53 are mounted on the upper support beam G51. The lower closing assembly G6 comprises a lower support beam G61, and a lower flap G62 and a lower core plate G63 are arranged on the lower support beam G61. The upper support beam G51 and the lower support beam G61 are slidably arranged on the slide rods G41. The support frame G4 is provided with two groups of vertically arranged adjusting screws G42, the adjusting screws G42 are rotatably mounted on the support frame G4, and pass through the upper support beam G51 and the lower support beam G61. The upper support beam G51 and the lower support beam G61 are provided with nuts G45 matched with the adjusting screws G42. The adjusting screws G42 are provided with two groups of threads with opposite screw directions, and the two groups of threads correspond to the upper support beam G51 and the lower support beam G61 respectively. The nut G45 is provided with an arc-shaped adjusting groove G46, and the nut G45 is fixed with the upper support beam G51 or the lower support beam G61 through the arc-shaped adjusting groove G46.

[0123] Since the upper closing assembly G5 and the lower closing assembly G6 have the same structural principle, here, the upper closing assembly G5 is mainly described. When the paper bag enters the feeding end of the upper core plate G53, the upper half page of the paper bag enters the gap between the upper flap G52 and the lower flap G62, and the outer side of the upper half page is attached to the upper flap G52. The position of the gap corresponds to the indentation of the paper bag, and the edge of the upper core plate G53 close to the upper flap G52 is aligned with the indentation of the paper bag. As the conveying mechanism continues to drive the paper bag to advance, the upper flap G52 is provided with a folding structure and gradually folds to one side of the lower flap G62 to complete the closing of one side of the paper tape. In the lower closing assembly G6, the folding structure of the lower flap G62 is relatively forward or backward relative to the upper flap G52. In this way, the upper closing assembly G5 and the lower closing assembly G6 fold the upper half page and the lower half page in sequence, thereby completing the closing action of the paper bag.

[0124] As shown in Figures 31-33 The closing device I is symmetrically distributed at both ends of the paper bag, and each closing device I comprises a closing support rod mechanism I1, a compacting mechanism I2 and a waste bag removing mechanism I3. The closing support rod mechanism I1 comprises an upper supporting plate I101, a lower supporting plate I102 and a cross-shaped guide rod I103 arranged along the conveying direction of the paper bag. The ends of the upper supporting plate I101, the lower supporting plate I102 and the guide rod I103 are arranged at the inlet of the compacting mechanism I2.

[0125] The compacting mechanism I2 comprises a bottom turning frame, a left flat bottom mechanism and a right flat bottom mechanism, the left flat bottom mechanism and the right flat bottom mechanism are symmetrically arranged on the bottom turning frame with the center line of the bottom turning frame as the symmetry axis, and the left flat bottom mechanism and the right flat bottom mechanism are identical in structure; wherein the left flat bottom mechanism comprises a mounting base I10 mounted on the bottom turning frame, the mounting base I10 is provided with an upper conveying assembly I20 and a lower conveying assembly I30, the upper conveying assembly I20 and the lower conveying assembly I30 are mirror image structures, the upper conveying assembly I20 comprises an upper driving roller I21, an upper driven roller I22, an upper swing roller I23, an upper swing arm I24 and an upper conveying belt I25, the lower conveying assembly I30 comprises a lower driving roller I31, a lower driven roller I32, a lower swing roller I33, a lower swing arm I34 and a lower conveying belt I35; the upper driving roller I21 is arranged at one end of the mounting base I10, the upper driven roller I22, the upper swing roller I23 and the upper swing arm I24 are arranged at the other end of the mounting base I10, one end of the upper swing arm I24 is sleeved on the shaft where the upper driven roller I22 is located and is arranged to rotate around the shaft center of the upper driven roller I22, after the upper swing arm I24 is rotated to a suitable angle, the bolt for adjusting the tightness of the upper swing arm I24 can be tightened to fix the upper swing arm I24. The upper swing roller I23 is mounted at one end of the upper swing arm I24, the upper driving roller I21, the upper driven roller I22 and the upper swing roller I23 are driven by the upper conveying belt I25, and the lower driving roller I31, the lower driven roller I32 and the lower swing roller I33 are driven by the lower conveying belt I35. Since the upper swing roller I23 is connected with the upper swing arm I24, and the upper swing arm I24 is arranged to rotate around the shaft center of the upper driven roller I22, the upper swing arm I24 drives the upper swing roller I23 to rotate counterclockwise around the shaft center of the upper driven roller I22 by a certain angle, then the bolt for adjusting the tightness of the upper swing arm I24 is tightened, and the lower swing arm I34 also drives the lower swing roller I33 to rotate clockwise around the shaft center of the lower driven roller I32 by a certain angle, then the bolt for adjusting the tightness of the lower swing arm I34 is tightened. The upper swing roller I23 and the lower swing roller I33 are transmission fulcrums of the upper conveying belt I25 and the lower conveying belt I35 respectively, and the rotation of the upper swing roller I23 and the lower swing roller I33 also makes the upper conveying belt I25 and the lower conveying belt I35 form a certain included angle, the angle is less than 90 degrees, so that the flat bottom mechanism is radially opened at the paper bag outlet B. In this embodiment, the upper conveying belt I25 and the lower conveying belt I35 form an angle of 15 to 30 degrees at the paper bag outlet B. The upper conveying belt I25 and the lower conveying belt I35 form a certain included angle at the paper bag outlet B, so that the paper bags are discharged faster and accurately sent to the next process. Further, the upper driving roller I21 and the lower driving roller I31 are driven by a motor.

[0126] The waste bag rejection mechanism I3 comprises a conveying belt I110, a support I130, and a rejection device I120 located at the end of the conveying belt I110, wherein the rejection device I120 comprises a pneumatic cylinder I121, a pinch belt set I122, and a driving motor I124; the pinch belt set I122 comprises an inlet and an outlet, and is composed of a driving belt located at the lower side and a driven belt located at the upper side, and the belt surface of the driving belt is in abutment with the belt surface of the driven belt; the driving motor I124 drives the driving belt to circulate; the pneumatic cylinder I121 is located below the conveying belt I110, and the piston rod of the pneumatic cylinder I121 is in an obtuse angle with the advancing direction of the conveying belt I110, and the moving direction of the inlet of the pinch belt set I122 is substantially parallel to the piston rod elongation direction; and the supporting plate I123 is located below the outlet of the pinch belt set I122.

Claims

1. A high speed pasting machine characterized in that, The application relates to a paper bag production device, which comprises, in sequence along the paper bag conveying direction, a feeding device (A), an arrangement device (B), an indentation device (C), a bag bottom opening device (D), a valve port inserting device (E), an inner reinforcing device (F), a bottom closing and forming device (G), an outer reinforcing device (H) and a bottom turning device (I), wherein the valve port inserting device (E) comprises a rack and reversing mechanisms (100), traction cutter mechanisms (200), paper conveying mechanisms (300), folding rollers (4), paper sticking cylinders (5) and glue applying mechanisms (600) installed on the upper and lower sides of the rack, the reversing mechanisms (100), the traction cutter mechanisms (200) and the paper conveying mechanisms (300) are sequentially arranged along the paper tape conveying direction, the paper tape is pressed into the paper sticking cylinder (5) by the folding roller (4) to be clamped and cut off, and then is input into the glue applying mechanism (600) through the paper sticking cylinder (5), the paper conveying mechanism (300) can move relative to the paper sticking cylinder (5), The feeding device (A) comprises two parallel rotary tables (A4), and a rotatable paper suction assembly (A5) is arranged between the two rotary tables (A4), The rack of the valve port inserting device (E) comprises a high top plate (10), a low top plate (11) and a bottom plate (1) sequentially and parallelly arranged from top to bottom, the paper conveying mechanism (300) comprises a transmission mechanism (2) and a moving mechanism (3), one part of the transmission mechanism (2) is installed between the bottom plate (1) and the high top plate (10), the other part of the transmission mechanism (2) is installed on the moving mechanism (3), the moving mechanism (3) can move relative to the paper sticking cylinder (5), the transmission mechanism (2) is provided with a paper conveying channel (9), a variable-length paper cutting channel (12) is arranged between the paper conveying channel (9) and the paper sticking cylinder (5), The moving mechanism (3) comprises a slide plate (31) which is parallel and slidingly installed on the bottom plate (1), another part of the transmission mechanism (2) is installed on the slide plate (31), the slide plate (31) is arranged on one side of the folding roller (4) and the sticker cylinder (5), the transmission mechanism (2) comprises a first belt transmission mechanism (21) and a second belt transmission mechanism (22), the first belt transmission mechanism (21) is on one side of the sticker cylinder (5), the second belt transmission mechanism (22) is on one side of the folding roller (4), the first belt transmission mechanism (21) comprises a first transmission belt (211), a first traction roller (215) and a first driven roller (212), the first driven roller (212) is vertically installed between the bottom plate (1) and the high top plate (10), the first traction roller (215) is vertically installed between the slide plate (31) and the low top plate (11), the first transmission belt (211) is installed on the first traction roller (215) and the first driven roller (212) and is tensioned by a first tensioning roller (216), the first tensioning roller (216) is vertically installed on the bottom plate (1), the second belt transmission mechanism (22) comprises a second transmission belt (221), a second traction roller (224) and a second driven roller (222), the second driven roller (222) is vertically installed between the bottom plate (1) and the high top plate (10), the second traction roller (224) is vertically installed between the slide plate (31) and the low top plate (11), the second transmission belt (221) is installed on the second traction roller (224) and the second driven roller (222) and is tensioned by a second tensioning roller (225), the second tensioning roller (225) is vertically installed on the bottom plate (1), and the superposition positions of the first transmission belt (211) and the second transmission belt (221) are paper feeding channels (9).

2. The high speed pasting machine of claim 1, wherein, The first transmission belt (211) is provided with a first eccentric roller (213), a first passing roller (214) and a second passing roller (217) between the first traction roller (215) and the first driven roller (212), the first eccentric roller (213) and the first passing roller (214) are vertically installed between the slide plate (31) and the low top plate (11), the second passing roller (217) is vertically installed between the bottom plate (1) and the high top plate (10), the first transmission belt (211) is installed on the straight line segments of the first eccentric roller (213) and the first passing roller (214), the first transmission belt (211) is installed on the straight line segments of the first passing roller (214) and the first traction roller (215), and the first transmission belt (211) is installed on the straight line segments of the first traction roller (215) and the first tensioning roller (216), which are parallel to each other. The second belt drive mechanism (22) is provided with a second eccentric roller (223) and a third roller (226) between the second traction roller (224) and the second driven roller (222), the second driven roller (222) is an eccentric roller, the second eccentric roller (223) is vertically installed between the slide plate (31) and the low top plate (11), the third roller (226) is vertically installed between the bottom plate (1) and the high top plate (10), the straight line segment of the second driven roller (222) and the second eccentric roller (223) is installed on the second transmission belt (221), the straight line segment of the second eccentric roller (223) and the second traction roller (224) is installed on the second transmission belt (221), and the straight line segment of the second traction roller (224) and the second tensioning roller (225) is installed on the second transmission belt (221). The straight line segment of the second transmission belt (221) installed on the second driven roller (222) and the second eccentric roller (223) and the straight line segment of the first transmission belt (211) installed on the first eccentric roller (213) and the first roller (214) are superimposed at the paper feeding channel (9).

3. The high speed pasting machine of claim 1, wherein, The upper part of the two rotating discs (A4) is provided with a material bin (A3) and a discharging mechanism (A8), the material bin (A3) and the discharging mechanism (A8) are located on the rotating path of the rotating disc (A4), one side of the material bin (A3) is provided with a front paper supporting assembly (A9), and the other side of the material bin (A3) is provided with a rear paper supporting and bag pressing assembly (A10).

4. The high speed pasting machine of claim 1, wherein The arrangement device (B) comprises an upper conveying belt (B22) and a lower conveying belt (B23) for clamping paper bag transmission, an arrangement conveying belt (B21) for paper bag equidistant arrangement, and a finishing conveying belt (B36) for paper bag bottom edge abutting, the ends of the upper conveying belt (B22) and the lower conveying belt (B23) are provided with a double-bag rejection mechanism (B5), and the end of the arrangement conveying belt (B21) is provided with a transition conveying assembly (B4).

5. The high speed pasting machine of claim 1, wherein The indentation device (C) comprises a diagonal indentation mechanism (C1) and a longitudinal cutter mechanism (C2) symmetrically arranged along the two ends of the paper bag, the diagonal indentation mechanism (C1) and the longitudinal cutter mechanism (C2) are sequentially arranged along the paper bag transmission direction, the diagonal indentation mechanism (C1) comprises two groups of diagonal indentation knives (C11) and diagonal indentation pad wheels (C12) arranged from top to bottom, the indentation directions of the two diagonal indentation knives (C11) are opposite, the longitudinal cutter mechanism (C2) comprises two groups of longitudinal cutters (C21) and longitudinal pad wheels (C22) arranged from top to bottom, and one group of longitudinal cutters (C21) and longitudinal pad wheels (C22) are correspondingly provided with a transverse indentation wheel (C31) and a transverse indentation pad wheel (C32).

6. The high speed pasting machine of claim 5, wherein, The bag bottom opening device (D) comprises sequentially arranged suction opening mechanism (D1), opening mechanism (D2) and flattening mechanism (D3) along the paper bag conveying direction, the suction opening mechanism (D1), opening mechanism (D2), flattening mechanism (D3) are symmetrically arranged along the two ends of the paper bag, the suction opening mechanism (D1) comprises a base plate (D101), one side of the base plate (D101) is provided with an upper suction opening assembly (D103) and a lower suction opening assembly (D104), the upper suction opening assembly (D103), the lower suction opening assembly (D104) are symmetrically arranged along the two sides of the paper bag, the upper suction opening assembly (D103), the lower suction opening assembly (D104) all comprise a crank (D109), a gas arm (D1010), a ventilation shaft (D1011) and a gas distribution disc (D1012), one end of the crank (D109) is rotatably connected to the base plate (D101), the gas arm (D1010) is provided with a plurality of bag suction nozzles (D1019), the gas arm (D1010) is sleeved with a shaft sleeve (D1016), the shaft sleeve (D1016) is sleeved with a sliding sleeve (D1017), the sliding sleeve (D1017) is provided with a rotating shaft (D1018), the rotating shaft (D1018) is rotatably connected with the other end of the crank (D109), the gas arm (D1010) is communicated with the ventilation shaft (D1011), the ventilation shaft (D1011) is rotatably connected to the gas distribution disc (D1012), the gas distribution disc (D1012) is rotatably connected to the base plate (D101), the gas distribution disc (D1012) and the base plate (D101) are hermetically connected with a vacuum receiving disc (D1013), the vacuum receiving disc (D1013) is provided with a vacuum groove (D1014) for communicating the ventilation shaft (D1011) and the suction pipe (D1015).

7. The high speed pasting machine of claim 1, wherein The bottom closing forming device (G) comprises sequentially arranged upper glue mechanism (G7) and bottom closing mechanism (G8) along the paper bag conveying direction, the upper glue mechanism (G7), bottom closing mechanism (G8) are symmetrically arranged along the two ends of the paper bag, the bottom closing mechanism (G8) comprises upper bottom closing assembly (G5) and lower bottom closing assembly (G6), the upper bottom closing assembly (G5) comprises upper support beam (G51) and upper turning plate (G52) and upper core plate (G53) installed on the upper support beam (G51), the lower bottom closing assembly (G6) comprises lower support beam (G61) and lower turning plate (G62) and lower core plate (G63) arranged on the lower support beam (G61).

8. The high speed pasting machine of claim 1, wherein, The bottom turning device (I) comprises a bottom turning support rod mechanism (I1) and a compacting mechanism (I2) arranged in sequence along the paper bag conveying direction, the compacting mechanism (I2) is connected with an inclined waste bag removing mechanism (I3), the bottom turning support rod mechanism (I1), the compacting mechanism (I2) and the waste bag removing mechanism (I3) are symmetrically arranged along both ends of the paper bag, the bottom turning support rod mechanism (I1) comprises an upper supporting plate (I101), a lower supporting plate (I102) and a cross arranged guide rod (I103) arranged along the paper bag conveying direction, and the ends of the upper supporting plate (I101), the lower supporting plate (I102) and the guide rod (I103) are arranged at the entrance of the compacting mechanism (I2).

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