CN111674103A - Paper bag bottom pasting equipment - Google Patents

Abstract

The invention discloses a paper bag bottom pasting device which comprises a workbench, wherein a first conveying mechanism for releasing paper bags, an unreeling mechanism for releasing paper, a conveying roller set for conveying the released paper, a cutting mechanism, a paper folding and breaking mechanism and a gluing mechanism are arranged on the workbench and are sequentially distributed along the conveying direction of the paper; the cutting mechanism is used for forming an easy-tearing line on the paper to divide the paper into a plurality of paper sheet units; the paper folding and breaking mechanism is used for folding the end part of the adjacent paper sheet unit, breaking the paper sheet unit from the paper sheet, and then conveying the paper sheet unit to the gluing mechanism; and the gluing mechanism is used for smearing glue on the broken paper units and conveying the paper units towards the paper bag so as to enable the paper units to be stuck and fixed on the bottom of the paper bag. The paper bag bottom pasting equipment with the structure automatically realizes the work of pasting the bottom of the paper bag to strengthen paper scraps, and the structural strength of the paper bag produced by the paper bag bottom pasting equipment is guaranteed, so that the production efficiency is high.

Description

Paper bag bottom pasting equipment

Technical Field

The invention relates to the technical field of paper bag manufacturing, in particular to bottom pasting equipment for paper bags.

Background

In the current society, along with the popularization of environmental awareness, paper bags are the first choice of people to replace plastic bags. The manufacturing process of the common paper bag comprises two processes of tube making and bottom pasting, and the common bottom pasting machine is a process of forming an indentation at the bag mouth of the paper bag finished by the tube making, coating glue, folding and flattening to realize the bottom pasting.

To the higher container bag of bearing requirement, then need increase at the in-process of the end of paste process with container bag bottom area assorted enhancement scraps of paper, will strengthen the scraps of paper and paste and turn over again and flatten in the container bag bottom, and this process does not have corresponding equipment at present and can realize, only can operate through the manual work, leads to the quality of container bag uneven, and production efficiency is low moreover.

Disclosure of Invention

In order to overcome the disadvantages of the prior art, one of the objects of the present invention is to provide a paper bag bottom pasting apparatus for automatically pasting reinforced paper sheets.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a paper bag bottom pasting apparatus comprising: a work table; the first conveying mechanism is arranged on the workbench and used for conveying the paper bags to be pasted with the bottom; the unwinding mechanism is used for releasing paper capable of strengthening the bottom strength of the paper bag; the conveying roller sets are arranged on the workbench, positioned on one side of the first conveying mechanism and used for conveying the paper released by the unwinding mechanism; the workbench is provided with a cutting mechanism, a paper folding and breaking mechanism and a gluing mechanism which are sequentially distributed along the conveying direction of the paper; the cutting mechanism is used for cutting the paper at intervals uniformly to form a plurality of easy-to-tear lines so as to divide the paper into a plurality of paper sheet units; the paper folding and breaking mechanism is positioned behind the conveying roller group and used for folding the end part of the adjacent paper sheet unit and breaking the paper sheet unit from the paper sheet to convey towards the gluing mechanism; the gluing mechanism is used for smearing glue on the paper sheet units after the paper sheet units are broken, and conveying the paper sheet units smeared with the glue towards the paper bag so that the paper sheet units are pasted and fixed on the bottom of the paper bag.

The container bag of above structure is pasted end equipment utilizes first conveying mechanism will treat the container bag of pasting the end and carries forward, then release the paper through unwinding mechanism, the paper passes through cutting mechanism through the delivery roller group in proper order, paper breaking mechanism and rubber coating mechanism, the paper separates for a plurality of scraps of paper units through cutting mechanism, the scraps of paper unit is separated and is carried to the rubber coating mechanism on the paper through paper breaking mechanism, rubber coating mechanism scribbles glue on the scraps of paper unit after, this scraps of paper unit laminates with the container bag of carrying to come mutually, and then realized automatically that the container bag bottom is pasted the work of strengthening the scraps of paper, structural strength through the container bag of pasting end equipment production by this container bag obtains the guarantee, and production efficiency is high.

As a preferred embodiment of the present invention, the cutting mechanism includes a fixed blade fixedly disposed on the table and extending in a vertical direction, the table is rotatably provided with a movable blade located on one side of the fixed blade, a gap through which the paper can pass is formed between the fixed blade and the movable blade, a plurality of notch portions recessed inward are disposed at intervals in a height direction on a blade edge of the movable blade, a cutting section is formed between adjacent notch portions, the blade edge of the movable blade can rotate to a position opposite to the blade edge of the fixed blade to cut the paper, and a connecting strip is formed at a position corresponding to the notch portions after the paper is cut. When the cutting mechanism is used, paper passes through a gap between the fixed blade and the movable blade, the movable blade rotates periodically to enable the blade edge to be close to or far away from the blade edge of the fixed blade to cut the paper, a notch is formed at the position of the paper corresponding to the cutting section of the movable blade, and a connecting band is formed at the position of the paper corresponding to the notch part of the movable blade, so that an easily torn line is formed.

In a preferred embodiment of the present invention, the paper folding and breaking mechanism includes a first rotating roller and a second rotating roller rotatably provided on a table, a gap for conveying paper is arranged between the first rotating roller and the second rotating roller, the circumferential surface of the first rotating roller can be tangent to the paper bag conveyed by the first conveying mechanism, the transmission speed of the first rotating roller and the second rotating roller is higher than that of the conveying roller group, an inward concave paper folding space is arranged on the circumferential side surface of the first rotating roller, the second rotating roller is movably provided with a movable push plate which can make the end part of the paper sheet unit extend into the paper folding space, the first rotating roller is movably provided with a movable clamping plate positioned in the paper folding space, the movable clamping plate clamps the end part of the paper sheet unit in the paper folding space to form a folded edge, the paper sheet unit rotates along with the first rotating roller to be pulled apart from the paper sheet and conveyed to the gluing mechanism. Above-mentioned paper folding stretch-break mechanism during operation, the paper that is transmitted from the conveying roller set gets into the clearance between first live-rollers and the second live-rollers, the activity push pedal pushes the tip of a scraps of paper unit in the paper folding space, then the movable splint presss from both sides the tip of this scraps of paper unit tightly, this scraps of paper unit is pulled off the separation from the paper under the differential condition of first live-rollers and conveying roller set, then this scraps of paper unit follows the second live-rollers and carries forward to rubber coating mechanism in, thereby the realization is separated into a plurality of scraps of paper units with the paper, and scraps of paper unit after the separation can automatic positioning and order in order to adapt to automated production.

As a preferred embodiment of the present invention, the movable nip plate is rotatably provided on the first rotating roller within the paper folding space by a first pivot shaft to which a first driving mechanism is connected that drives the forward and reverse rotations thereof so that the movable nip plate periodically extends outward and converges inward. The speed of the periodic movement of the movable clamping plate can be improved through the driving mode, and the production efficiency is improved.

As a preferred embodiment of the present invention, the first driving mechanism includes a first rotating arm fixedly disposed on the first pivot, the first rotating arm has two free ends, one free end of the first rotating arm is provided with a first rotating wheel member, the workbench is fixedly provided with a rotating disc member coaxial with the first pivot, the rotating disc member is provided with an arc guide surface capable of abutting against the first rotating wheel member, the other free end of the first rotating arm is connected with a first elastic member for driving the movable clamp plate to extend outward and return, the first rotating roller is fixedly provided with a limit block capable of abutting against the first rotating arm to limit a swing angle of the movable clamp plate, and the first rotating wheel member can abut against the arc guide surface under the action of the first elastic member to enable the movable clamp plate to converge inward to clamp the paper sheet unit. When the first rotating roller rotates, the first rotating roller rotates relative to the rotating disc piece, the first rotating wheel piece on the first rotating arm enters the arc guide surface to enable the first pivot to rotate for a certain angle, and further the movable clamping plate clamps the end part of the paper sheet unit.

Preferably, the movable push plate is rotatably provided on the second rotating roller by a second pivot shaft to which a second driving mechanism for driving the forward and reverse rotation thereof to periodically extend and converge the movable push plate outwardly and inwardly is connected. The speed of the periodic motion of the movable push plate can be improved through the driving mode, and the production efficiency is improved.

As a preferred embodiment of the present invention, the second driving mechanism includes a second rotating arm fixedly disposed on the second pivot, a second rotating wheel member is disposed at a free end of the second rotating arm, a second elastic member for driving the movable pushing plate to inwardly converge is connected to the second rotating arm, and a cam portion periodically abutting against the second rotating wheel member so as to cause the movable pushing plate to outwardly extend into the paper folding space is disposed on the second pivot. The second driving mechanism of the structure makes full use of the rotation of the second rotating roller to link the movement of the movable push plate, and a power source is not required to be additionally arranged to drive the movable push plate to extend outwards and converge inwards, so that the structure is simple and ingenious.

As a preferred embodiment of the present invention, the first conveying mechanism includes a conveying belt, the worktable is provided with a plurality of frame strips located outside the conveying belt, a conveying channel for conveying the paper bags is enclosed between the plurality of frame strips and the conveying belt, and the end of the conveying channel extends to the circumferential side of the first rotating roller so that the paper bags are attached to the paper sheet unit coated with the glue. This first conveying mechanism simple structure, the bottom of container bag is in the fretwork region between the frame strip, can not influence pasting of scraps of paper unit fixedly.

As a preferred embodiment of the present invention, the glue spreading mechanism includes a glue spreading roller assembly and a glue spreading roller assembly located on one side of the glue spreading roller assembly, the glue spreading roller assembly includes a glue spreading roller main body, a flexible strip made of a plastic material and tightly attached to a circumferential surface of the glue spreading roller main body is disposed on the glue spreading roller main body, a glue sheet for adhering glue is mounted on the flexible strip, one end of the flexible strip is fixed on the glue spreading roller main body, and a tensioning mechanism capable of tensioning the other end of the flexible strip to tension the flexible strip on the circumferential surface of the glue spreading roller main body is movably disposed on the glue spreading roller main body. Above rubber coating mechanism utilizes straining device with the flexible band tensioning of plastics material and attached on the circumference surface of glue spreader main part, and the film board is fixed on the surface of flexible band then accessible mode of pasting, and the connection between film board and the flexible band is firm to ensure the stability of the relative position of film board rubber spreader main part, and then the stability of guarantee rubber coating operation.

The glue spreader main part includes the pivot, fixedly in the pivot being provided with the circular arc metal sheet that is located its outside, and the centre of a circle of this circular arc metal sheet is located the axle center of pivot, form the holding between the inner wall of circular arc metal sheet and the pivot tensioning mechanism's installation space, tensioning mechanism is including rotating the swing arm that sets up in installation space and the third elastic component that links to each other with the swing arm, be equipped with on the tip of circular arc metal sheet and be used for connecting the first fixed knot who is used for the one end of flexonics area constructs, be equipped with the second fixed knot who is used for connecting the other end of flexonics area on the free end of swing arm constructs, the third elastic component orders about the swing arm and rotates and take-up the flexo. The flexible belt can be stably tensioned and fixed on the surface of the glue spreader main body through the structure, so that the situation that the flexible belt is relatively displaced relative to the glue spreader main body is avoided, and the accuracy of the position of the film plate on the flexible belt is further ensured.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view showing the construction of the paper bag bottom pasting apparatus of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a simplified schematic diagram of the paper bag bottom pasting apparatus of the present invention;

FIG. 4 is a schematic view of the paper after passing through the cutting mechanism;

FIG. 5 is a schematic view of the cutting mechanism;

FIG. 6 is an exploded schematic view of FIG. 5;

FIG. 7 is an enlarged partial schematic view of section A of FIG. 6;

FIG. 8 is a schematic structural view of the paper folding and breaking mechanism arranged on the workbench;

FIG. 9 is a simplified schematic diagram of the combination of the paper folding stretch-break mechanism and the set of feed rollers;

FIG. 10 is a schematic view of the combination of the first rotatable roller, the movable clamp plate and the first drive mechanism;

FIG. 11 is a schematic view of the structure of FIG. 10 from another perspective;

FIG. 12 is a schematic view showing the combination of the second rotating roller, the movable push plate and the second driving mechanism;

FIG. 13 is a schematic structural view of one embodiment of a glue roller assembly;

FIG. 14 is a schematic view of the arrangement of FIG. 13 with the flexible band and film sheet removed;

fig. 15 is an exploded view of fig. 14.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Referring to fig. 1 to 4, a paper bag bottom pasting apparatus includes: a work table 1; the first conveying mechanism 10 is arranged on the workbench 1 and used for conveying the paper bags 200 to be pasted with bottom; an unwinding mechanism for releasing the paper 100 that can reinforce the bottom strength of the paper bag 200; the conveying roller sets 20 are arranged on the workbench 1 and positioned on one side of the first conveying mechanism 10 and are used for conveying the paper 100 released by the unwinding mechanism; the workbench 1 is provided with a cutting mechanism 30, a paper folding and breaking mechanism 40 and a gluing mechanism 50 which are sequentially distributed along the conveying direction of the paper 100; the cutting mechanism 30 is used for cutting the paper 100 at intervals to form a plurality of easy-to-tear lines so as to divide the paper 100 into a plurality of paper sheet units 110; the paper folding and breaking mechanism 40 is positioned behind the conveying roller group 20 and is used for folding the end part of the adjacent paper sheet unit 110 and breaking the paper sheet unit 110 from the paper sheet 100 to convey towards the glue coating mechanism 50; the glue coating mechanism 50 is used for coating glue on the broken paper unit 110, and conveying the paper unit 110 coated with the glue towards the paper bag 200 so as to enable the paper unit 110 to be adhered and fixed on the bottom of the paper bag 200.

The container bag bottom pasting equipment with the structure utilizes the first conveying mechanism 10 to convey the container bag 200 to be pasted forward, then the paper 100 is released through the unreeling mechanism, the paper 100 sequentially passes through the cutting mechanism 30 through the conveying roller group 20, the paper folding breaking mechanism 40 and the gluing mechanism 50, the paper 100 is separated into the paper sheet units 110 through the cutting mechanism 30, the paper sheet units 110 are separated from the paper 100 through the paper folding breaking mechanism 40 and conveyed to the gluing mechanism 50, the gluing mechanism 50 coats glue on the paper sheet units 110, the paper sheet units 110 are laminated with the container bag 200 conveyed, the paper sheet 200 bottom pasting strengthening work is automatically realized, the structural strength of the container bag 200 produced by the container bag bottom pasting equipment is guaranteed, and the production efficiency is high.

Referring to fig. 5 to 7, as a preferred embodiment of the present invention, the cutting mechanism 30 includes a fixed blade 31 fixedly disposed on the table 1 and extending in a vertical direction, a movable blade 32 disposed on one side of the fixed blade 31 is rotatably disposed on the table 1, a gap through which the paper 100 can pass is formed between the fixed blade 31 and the movable blade 32, a plurality of notch portions 33 recessed inward are disposed on a blade edge of the movable blade 32 at intervals in a height direction, a cutting section 34 is formed between adjacent notch portions 33, the blade edge of the movable blade 32 can rotate to a position opposite to the blade edge of the fixed blade 31 to cut the paper 100, and a connecting strip 102 is formed at a position corresponding to the notch portions 33 after the paper 100 is cut. When the cutting mechanism 30 is used, the paper 100 passes through the gap between the fixed blade 31 and the movable blade 32, the movable blade 32 rotates periodically to enable the blade edge to be close to or far away from the blade edge of the fixed blade 31 to cut the paper 100, the position of the paper 100 corresponding to the cutting section 34 of the movable blade 32 forms the notch 101, and the position of the paper 100 corresponding to the notch part 33 of the movable blade 32 forms the connecting band 102, so that the easy-to-tear line is formed. Be equipped with stationary knife mount pad 35 on workstation 1, stationary blade 31 install vertically in on the stationary knife mount pad 35, and the blade point of stationary blade 31 is towards a side of paper 100, rotate on the workstation 1 and be provided with the pivot piece 36 that is located stationary knife mount pad 35 one side, moving blade 32 fixed mounting is on pivot piece 36, and the blade point of moving blade 32 can rotate to the another side towards paper 100.

Referring to fig. 8 to 12, preferably, the paper folding and breaking mechanism 40 includes a first rotating roller 41 and a second rotating roller 42 rotatably disposed on the work table 1, a gap for conveying the paper 100 is provided between the first rotating roller 41 and the second rotating roller 42, a circumferential surface of the first rotating roller 41 can be tangent to the paper bag 200 conveyed by the first conveying mechanism 10, a conveying rate of the first rotating roller 41 and the second rotating roller 42 is higher than that of the conveying roller group 20, an inwardly recessed paper folding space 43 is formed on a circumferential side surface of the first rotating roller 41, a movable push plate 45 capable of extending an end of the paper unit 110 into the paper folding space 43 is movably disposed on the second rotating roller 42, a movable clamping plate 44 disposed in the paper folding space 43 is movably disposed on the first rotating roller 41, the movable clamping plate 44 clamps the end of the paper unit 110 in the paper folding space 43 to form a folded edge, the sheet unit 110 is rotated by the first rotating roller 41 to be cut off from the sheet 100 and conveyed toward the glue applying mechanism 50. When the paper folding and breaking mechanism 40 works, paper 100 conveyed from the conveying roller group 20 enters a gap between the first rotating roller 41 and the second rotating roller 42, the movable push plate 45 pushes the end part of one paper sheet unit 110 into the paper folding space 43, then the movable clamp plate 44 clamps the end part of the paper sheet unit 110, the paper sheet unit 110 is broken and separated from the paper 100 under the differential speed condition of the first rotating roller 41 and the conveying roller group 20, then the paper sheet unit 110 is conveyed forwards to the glue coating mechanism 50 along with the second rotating roller 42, so that the paper sheet 100 is separated into a plurality of paper sheet units 110, and the separated paper sheet units 110 can be automatically positioned and sequenced to adapt to automatic production.

Referring to fig. 10 and 11, as a preferred embodiment of the present invention, the movable nip plate 44 is rotatably disposed on the first rotating roller 41 within the paper folding space 43 by a first pivot 46, and the first pivot 46 is connected with a first driving mechanism 47 that drives the first rotating roller to rotate forward and backward so that the movable nip plate 44 periodically extends outward and converges inward. The driving mode can improve the periodic movement speed of the movable clamping plate 44 and improve the production efficiency.

As a preferred embodiment of the present invention, the first driving mechanism 47 includes a first rotating arm 471 fixedly disposed on the first pivot 46, said first turning arm 471 having two free ends, one free end of the first turning arm 471 being provided with a first turning wheel 472, a rotating disc part 473 coaxial with the first pivot 46 is fixedly arranged on the workbench 1, an arc guide surface 474 which can abut against the first rotating disc part 472 is arranged on the rotating disc part 473, a first elastic part 475 which drives the movable clamping plate 44 to extend outwards and reset is connected with the other free end of the first rotating arm 471, a stopper 476 is fixed to the first rotating roller 41 and can abut against the first rotating arm 471 to limit the swing angle of the movable clamp 44, the first rotary member 472 is urged against the circular arc guide surface 474 by the first elastic member 475 to inwardly converge the movable clamp plate 44 to clamp the paper unit 110. When the first rotating roller 41 rotates, i.e., rotates relative to the turn plate member 473, the first rotating wheel member 472 on the first rotating arm 471 enters the circular arc guide surface 474 to rotate the first pivot shaft 46 by a certain angle, and the movable clamp plate 44 clamps the end of the paper unit 110, in the process, the first elastic member 475 urges the first rotation wheel member 472 against the arc guide surface 474, and when the first rotating roller 41 is rotated until the first rotating member 472 is disengaged from the arc guide surface 474, the first rotating arm 471 is rotated by a certain angle by the first elastic member 475 to cause the movable clamp plate 44 to be outwardly protruded to be separated from the paper sheet unit 110, the first driving mechanism 47 with the above structure makes full use of the rotation of the first rotating roller 41 to link the movement of the movable clamping plate 44, and does not need to additionally arrange a power source to drive the movable clamping plate 44 to extend outwards and converge inwards, so that the structure is simple, reliable and ingenious.

Referring to fig. 12, preferably, the movable push plate 45 is rotatably provided on the second rotating roller 42 by a second pivot 48, and the second pivot 48 is connected with a second driving mechanism 49 driving the forward and reverse rotation thereof to periodically extend and converge the movable push plate 45 outward and inward. The periodic motion speed of the movable push plate 45 can be improved through the driving mode, and the production efficiency is improved.

As a preferred embodiment of the present invention, the second driving mechanism 49 includes a second rotating arm 491 fixedly disposed on the second pivot 48, a second rotating wheel 492 is disposed at a free end of the second rotating arm 491, a second elastic member 493 for driving the movable pushing plate 45 to converge inward is connected to the second rotating arm 491, and a cam portion 494 periodically abutting against the second rotating wheel 492 to cause the movable pushing plate 45 to extend outward into the paper folding space 43 is disposed on the second pivot 48. The second driving mechanism 49 with the above structure makes full use of the rotation of the second rotating roller 42 to link the movement of the movable push plate 45, and no additional power source is needed to drive the movable push plate 45 to extend outwards and converge inwards, so that the structure is simple and ingenious.

Referring to fig. 9, here, the circumference of the first rotating roller 41 is about twice as large as that of the second rotating roller 42, and a corresponding receding groove 411 is formed on the circumferential wall surface of the first rotating roller 41 to match with the movable pushing plate 45. After one paper sheet unit 110 is pulled off, the second rotating roller 42 rotates once again, the movable push plate 45 extends into the receding groove 411 under the action of the first driving mechanism 47, at this time, the other paper sheet unit 110 at the rear is conveyed at a slower speed by the conveying roller group 20, and when the paper sheet unit 110 at the rear is conveyed to the vicinity of the paper folding space 43, the movable push plate 45 extends into the paper folding space 43 again to push the paper sheet unit 110 to one side of the first rotating roller 41, so that the adjacent paper sheet units 110 after being pulled off can be conveyed at a certain distance for use in the subsequent process.

Referring to fig. 2, as a preferred embodiment of the present invention, the first conveying mechanism 10 includes a conveying belt 11, a plurality of frame strips 12 are disposed on the table 1 and located outside the conveying belt 11, a conveying path for conveying the paper bag 200 is defined between the plurality of frame strips 12 and the conveying belt 11, and a distal end of the conveying path extends to a circumferential side surface of the first rotating roller 41 so that the paper bag 200 is attached to the paper sheet unit 110 coated with the glue. The first conveying mechanism 10 has a simple structure, and the bottom of the paper bag 200 is located in the hollow area between the frame strips 12, so that the sticking and fixing of the paper sheet unit 110 are not affected.

Referring to fig. 13 to 15, as a preferred embodiment of the present invention, the glue applying mechanism 50 includes a glue applying roller assembly and a glue applying roller assembly located at one side of the glue applying roller assembly, the glue applying roller assembly includes a glue applying roller main body 51, a flexible strip 52 made of plastic material and closely attached to the circumferential surface of the glue applying roller main body 51 is disposed on the glue applying roller main body 51, a film plate 53 for adhering glue is mounted on the flexible strip 52, one end of the flexible strip 52 is fixed on the glue applying roller main body 51, and a tensioning mechanism 54 capable of tensioning the other end of the flexible strip 52 to tension the flexible strip 52 on the circumferential surface of the glue applying roller main body 51 is movably disposed on the glue applying roller main body 51. Above glue spreader 50 utilizes straining device 54 to stretch flexible belt 52 of plastics material and attached on the circumferential surface of glue spreader main part 51, and film board 53 then accessible mode of pasting is fixed on the surface of flexible belt 52, and the connection between film board 53 and the flexible belt 52 is firm to ensure the stability of the relative position of glue spreader main part 51 of film board 53, and then the stability of guarantee rubber coating operation.

Referring to fig. 14 and 15, the glue spreader body 51 includes a rotating shaft 511, an arc metal plate 512 is fixedly disposed on the rotating shaft 511, a center of the arc metal plate 512 is located on an axis of the rotating shaft 511, an installation space for accommodating the tightening mechanism 54 is formed between an inner wall of the arc metal plate 512 and the rotating shaft 511, the tightening mechanism 54 includes a swing arm 541 rotatably disposed in the installation space and a third elastic member 542 connected to the swing arm 541, a first fixing structure 543 for connecting one end of the flexible tape 52 is disposed on one end of the arc metal plate 512, a second fixing structure 544 for connecting the other end of the flexible tape 52 is disposed on a free end of the swing arm 541, and the third elastic member 542 drives the swing arm 541 to rotate and tighten the flexible tape 52. The flexible belt 52 can be stably tensioned and fixed on the surface of the glue spreader main body 51 through the structure, so that the situation that the flexible belt 52 is relatively displaced relative to the glue spreader main body 51 is avoided, and the accuracy of the position of the film plate 53 on the flexible belt 52 is further ensured.

Wherein, the inner part of the arc metal plate 512 is provided with a flat plate part 55 perpendicular to the rotating shaft 511, the flat plate part 55 is provided with a through hole 551 allowing the rotating shaft 511 to pass through, the flat plate part 55 is provided with an expansion connecting block 552 detachably mounted with the rotating shaft 511, the first fixing structure 543 comprises a first mounting groove 5431 recessed inwards along the outer surface of the arc metal plate 512, the arc metal plate 512 is provided with a plurality of first threaded through holes 5432 communicated with the first mounting groove 5431, the first mounting groove 5431 is internally provided with a first cushion plate 5433 abutting against one end of the flexible belt 52, the first threaded through holes 5432 are connected with first screws abutting against the first cushion plate 5433 to tightly press the flexible belt 52, the swing arm 541 comprises a third pivot 5411 rotatably arranged in the mounting space, the third pivot 5411 is connected with a radially extending overhanging arm 5412, the overhanging arm 5412 is provided with a mounting strip 5413 for mounting the end of the flexible belt 52, the second fixing structure 544 includes a second mounting groove 5441 formed in a side surface of the mounting bar 5413, the mounting bar 5413 is provided with a plurality of second threaded through holes 5442 communicated with the second mounting groove 5441, the second mounting groove 5441 is provided with a second cushion plate 5443 abutting against an end of the flexible belt 52, and the second threaded through holes 5442 are connected with second screws abutting against the second cushion plate 5443 to tightly press the flexible belt 52.

The above examples are merely preferred embodiments of the present invention, and other embodiments of the present invention are possible, such as a reasonable combination of the technical solutions described in the examples. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present invention, and such equivalent changes or substitutions are included in the scope set forth in the claims of the present application.

Claims (10)

1. A paper bag bottom pasting device is characterized by comprising:

a table (1);

the first conveying mechanism (10) is arranged on the workbench (1) and is used for conveying the paper bags (200) to be pasted with the bottom;

an unwinding mechanism for releasing the paper (100) that can reinforce the bottom strength of the paper bag (200);

the conveying roller sets (20) are arranged on the workbench (1), are positioned on one side of the first conveying mechanism (10), and are used for conveying the paper (100) released by the unwinding mechanism;

the workbench (1) is provided with a cutting mechanism (30), a paper folding and breaking mechanism (40) and a gluing mechanism (50) which are sequentially distributed along the conveying direction of the paper (100);

the cutting mechanism (30) is used for cutting the paper (100) at intervals and uniformly to form a plurality of easy-to-tear lines so as to divide the paper (100) into a plurality of paper sheet units (110);

the paper folding and breaking mechanism (40) is positioned behind the conveying roller group (20) and is used for folding the end part of the adjacent paper sheet unit (110) and breaking the paper sheet unit (110) from the paper sheet (100) and conveying the paper sheet unit towards the gluing mechanism (50);

the gluing mechanism (50) is used for smearing glue on the broken paper unit (110), and conveying the paper unit (110) smeared with the glue towards the paper bag (200) so as to enable the paper unit (110) to be stuck and fixed on the bottom of the paper bag (200).

2. The bottom pasting apparatus for paper bags according to claim 1, wherein:

cutting mechanism (30) are including fixed stationary blade (31) that sets up along vertical direction extension on workstation (1), it is provided with movable blade (32) that are located one side of stationary blade (31) to rotate on workstation (1), have the clearance that can supply paper (100) to pass through between stationary blade (31) and movable blade (32), be provided with a plurality of inside sunken breach portions (33) along the direction of height interval on the blade point of movable blade (32), form a cutting section (34) between adjacent breach portion (33), the blade point of movable blade (32) can rotate to with the relative position of the blade point of stationary blade (31) is in order to cut paper (100), paper (100) through the cutting after with the corresponding position in breach portion (33) forms connecting band (102).

3. The bottom pasting apparatus for paper bags according to claim 1, wherein:

the paper folding stretch breaking mechanism (40) comprises a first rotating roller (41) and a second rotating roller (42) which are rotatably arranged on a workbench (1), a gap for conveying paper (100) is formed between the first rotating roller (41) and the second rotating roller (42), the circumferential surface of the first rotating roller (41) can be tangent to a paper bag (200) conveyed by a first conveying mechanism (10), the transmission rate of the first rotating roller (41) and the second rotating roller (42) is higher than that of the conveying roller group (20), an inward concave paper folding space (43) is formed in the circumferential side surface of the first rotating roller (41), a movable push plate (45) capable of enabling the end part of a paper piece unit (110) to extend into the paper folding space (43) is movably arranged on the second rotating roller (42), and a movable clamp plate (44) located in the paper folding space (43) is movably arranged on the first rotating roller (41), the movable clamping plate (44) clamps the end part of the paper sheet unit (110) in the paper folding space (43) to form a folded edge, and the paper sheet unit (110) is pulled apart from the paper sheet (100) along with the rotation of the first rotating roller (41) and is conveyed to the gluing mechanism (50).

4. A paper bag bottom pasting apparatus according to claim 3, wherein:

the movable clamping plate (44) is rotatably arranged on the first rotating roller (41) through a first pivot shaft (46) and is positioned in the paper folding space (43), and the first pivot shaft (46) is connected with a first driving mechanism (47) for driving the first rotating roller to rotate forwards and backwards so as to enable the movable clamping plate (44) to periodically extend outwards and converge inwards.

5. The bottom pasting apparatus for paper bags according to claim 4, wherein:

the first driving mechanism (47) comprises a first rotating arm (471) fixedly arranged on a first pivot (46), the first rotating arm (471) is provided with two free ends, one free end of the first rotating arm (471) is provided with a first rotating wheel member (472), a rotating disc member (473) coaxial with the first pivot (46) is fixedly arranged on the workbench (1), an arc guide surface (474) capable of abutting against the first rotating wheel member (472) is arranged on the rotating disc member (473), the other free end of the first rotating arm (471) is connected with a first elastic member (475) for driving the movable clamping plate (44) to extend outwards and reset, a limiting block (476) capable of abutting against the first rotating arm (471) to limit the swinging angle of the movable clamping plate (44) is fixedly arranged on the first rotating roller (41), and the first rotating wheel member (472) can abut against the arc guide surface (474) under the action of the first elastic member (475) to enable the movable clamping plate (44) Converging inward to clamp the sheet unit (110).

6. A paper bag bottom pasting apparatus according to claim 3, wherein:

the movable push plate (45) is rotatably arranged on the second rotating roller (42) through a second pivot (48), and the second pivot (48) is connected with a second driving mechanism (49) for driving the second pivot to rotate positively and negatively so as to enable the movable push plate (45) to periodically extend outwards and converge inwards.

7. The bottom pasting apparatus for paper bags according to claim 6, wherein:

the second driving mechanism (49) comprises a second rotating arm (491) fixedly arranged on a second pivot (48), a second rotating wheel piece (492) is arranged at one free end of the second rotating arm (491), a second elastic piece (493) for driving the movable push plate (45) to inwardly converge is connected onto the second rotating arm (491), and a cam portion (494) which periodically abuts against the second rotating wheel piece (492) to enable the movable push plate (45) to outwardly extend into the paper folding space (43) is arranged on the second pivot (48).

8. A paper bag bottom pasting apparatus according to claim 3, wherein:

first conveying mechanism (10) include transmission band (11), be equipped with a plurality of outside frame strips (12) that are located transmission band (11) on workstation (1), enclose into the transportation passageway that supplies the container bag to carry between a plurality of frame strips (12) and transmission band (11), the end of transportation passageway extends to the circumference side of first rotating roll (41) so that container bag and scraps of paper unit (110) that scribble glue laminate mutually.

9. The bottom pasting apparatus for paper bags according to claim 1, wherein:

gluing mechanism (50) include rubber coating roller subassembly and be located the rubberizing roller subassembly of rubber coating roller subassembly one side, the rubber coating roller subassembly includes rubber coating roller main part (51), be provided with on rubber coating roller main part (51) and hug closely flexible band (52) of the plastics material on the circumferential surface of rubber coating roller main part (51), install on flexible band (52) and be used for gluing the film board (53) of glue, the one end of flexible band (52) is fixed on rubber coating roller main part (51), the activity is provided with in rubber coating roller main part (51) and can take up the other end of flexible band (52) is so that the tensioning mechanism (54) of flexible band (52) tensioning on the circumferential surface of rubber coating roller main part (51).

10. The bottom pasting apparatus for paper bags according to claim 9, wherein:

the glue spreader main body (51) comprises a rotating shaft (511), an arc metal plate (512) positioned outside the rotating shaft (511) is fixedly arranged on the rotating shaft (511), the circle center of the arc metal plate (512) is positioned on the axle center of the rotating shaft (511), an installation space for accommodating the tensioning mechanism (54) is formed between the inner wall of the arc metal plate (512) and the rotating shaft (511), the tensioning mechanism (54) comprises a swing arm (541) rotatably arranged in the installation space and a third elastic piece (542) connected with the swing arm (541), a first fixing structure (543) used for connecting one end of the flexible belt (52) is arranged at one end part of the arc metal plate (512), a second fixing structure (544) used for connecting the other end of the flexible belt (52) is arranged on the free end of the swing arm (541), the third elastic piece (542) drives the swing arm (541) to rotate and tightens the flexible belt (52).

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