CN117885950A - Plastic bag packaging and bundling device - Google Patents

Abstract

The invention discloses a plastic bag packing and bundling device, which comprises a bag body overturning and conveying device and a bag body bundling device; the bag body overturning and conveying device is used for overturning the folded bag body from a vertical position to a horizontal position after clamping and conveying the folded bag body to the bag body bundling device; the bag body bundling device comprises a moving platform, a bundling and knotting mechanism, a tension pay-off rack, a discharging and bag pressing plate and a discharging platform, wherein two first compacting plates are arranged on the moving platform at intervals, the first compacting plates are driven by a second power device to move up and down, and a bundling gap for bundling the bag bodies is formed in the moving platform between the two first compacting plates; the bundling and knotting mechanism comprises a knotting conveying rod and a knotting machine core, the discharging platform is arranged below the moving platform, and the discharging bag pressing plate is arranged on the front side of the knotting conveying rod and corresponds to the bundling notch and is driven by the third power device to move up and down and used for pressing bundled bag bodies on the discharging platform. The invention improves the bundling efficiency of the plastic bags and reduces the failure rate.

Description

Plastic bag packaging and bundling device

Technical Field

The invention relates to the technical field of plastic bag packaging equipment, in particular to a plastic bag packaging and bundling device.

Background

In the prior art, after the plastic bag is folded by the strapping machine, the vibration disc is adopted as a rubber band conveying device to convey the rubber band to the strapping machine, and then the elastic acting force of the rubber band is sleeved outside the folded plastic band by the rubber band conveying device, so that the strapping machine can conveniently tie the plastic bag by the rubber band.

However, when the strapping machine in the prior art conveys the rubber band outwards, the rubber band is irregular and elastic, so that the rubber band cannot be accurately sleeved outside the folded plastic bag, the normal plastic bag strapping process of the plastic bag folding machine is affected, and the plastic bag strapping efficiency is low; and because of the irregular rubber band, the plastic bags of the bundling machine are easy to have matching faults in the bundling process.

Disclosure of Invention

The invention aims to provide a plastic bag packing and bundling device which solves the problems in the prior art, improves the bundling efficiency of plastic bags and reduces the failure rate.

In order to achieve the above object, the present invention provides the following solutions:

the invention provides a plastic bag packing and bundling device, which comprises a bag body overturning and conveying device and a bag body bundling device; the bag body overturning and conveying device is used for overturning the folded bag body from a vertical position to a horizontal position after clamping and conveying the folded bag body to the bag body bundling device;

the bag body bundling device comprises a moving platform, a bundling and knotting mechanism, a tension pay-off rack, a discharging bag pressing plate and a discharging platform, wherein the moving platform is arranged on a platform sliding rail in a sliding mode and driven by a first power device to reciprocate back and forth, two first compacting plates are arranged on the moving platform at intervals, the first compacting plates are driven by a second power device to move up and down and are used for compacting the bag body on the moving platform, and bundling notches for bundling the bag body are formed in the moving platform between the two first compacting plates;

the tying and knotting mechanism comprises a knotting conveying rod and a knotting machine core, the knotting conveying rod is arranged on the front side of the moving platform and corresponds to the tying notch, the knotting conveying rod is driven by a third power device to move up and down and back and forth, the tying belt passes through a conveying hole at the lower end of the knotting conveying rod after passing through the tension pay-off rack and is connected with the knotting machine core, and the knotting machine core is arranged below the knotting conveying rod and is positioned on the lower side of the tying notch and is used for tying and knotting a bag body in cooperation with the knotting conveying rod;

the discharging platform is arranged below the moving platform, the discharging bag pressing plate is arranged on the front side of the knotting conveying rod and corresponds to the bundling notch, and the discharging bag pressing plate is driven by a third power device to move up and down and is used for tightly pressing bundled bags on the discharging platform.

Preferably, the bag body overturning and conveying device comprises a moving frame, a linear displacement driving device, a first clamping plate, a second clamping plate, a connecting rod, a roller and a roller slideway, wherein the moving frame is slidably connected to a frame body sliding rail and is driven by the linear displacement driving device to reciprocate back and forth, the first clamping plate is rotatably connected to the moving frame through a clamping plate rotating shaft, one end of the clamping plate rotating shaft is fixedly connected with one end of the connecting rod, the other end of the connecting rod is rotatably connected with the roller, the roller is arranged in the roller slideway in a rolling way, the roller slideway comprises a first slideway, a second slideway and a third slideway which are sequentially connected, the third slideway is horizontally arranged with the first slideway along the front-back direction, the third slideway is positioned above the front side of the first slideway, the second slideway is connected with the rear end of the first slideway and the front end of the third slideway, and the clamping plate rotating shaft and the third slideway are positioned on the same horizontal plane; initially, the first clamping plate and the connecting rod are in a vertical state, and the roller is in the first slideway; when the linear displacement driving device drives the movable frame to move forwards, the roller moves from the first slideway to the third slideway through the second slideway, the connecting rod drives the clamping plate rotating shaft to rotate forwards by 90 degrees, and the first clamping plate is turned to be in a horizontal state and moves to above the movable platform; the second clamping plate is arranged on one side of the first clamping plate in parallel and driven by the clamping plate telescopic cylinder to be close to or far away from the first clamping plate.

Preferably, the tension pay-off rack comprises a support frame body, a first guide pulley, a second guide pulley and a torsion wheel, wherein the first guide pulley is connected to the support frame body, the second guide pulley is connected to the torsion wheel through a connecting rod, the torsion wheel is connected to the support frame body and is provided with a torsion spring on a wheel shaft of the torsion wheel, the torsion spring provides elastic force for driving the torsion wheel to rotate, the torsion wheel drives the second guide pulley to move upwards and reset to an initial position through the connecting rod when rotating, and the strapping tape is led out by a tape disc and sequentially bypasses the first guide pulley and the second guide pulley.

Preferably, the first clamping plate and the second clamping plate are provided with a clamping notch for giving way to the first clamping plate.

Preferably, the bag body folding and folding device further comprises a clamping and conveying lug folding mechanism, a bag body receiving mechanism and a bag body folding mechanism, wherein the clamping and conveying lug folding mechanism moves to and from the bag body receiving mechanism and the bag body folding mechanism; the clamping and sending earphone folding mechanism comprises a translation workbench, a telescopic pressing plate and a pair of earphone folding plates for folding two portable belts, wherein the telescopic pressing plate and the earphone folding plates are arranged up and down and are arranged on the front side of the translation workbench, and the telescopic pressing plate is driven by a power mechanism to move back and forth and move up and down;

the bag body bearing mechanism comprises a lifting workbench and a telescopic bearing plate arranged at the rear side of the lifting workbench, wherein the rear end of the telescopic bearing plate is provided with bilaterally symmetrical bevel edges, the telescopic bearing plate stretches out backwards and is positioned between the telescopic pressing plate and the lug folding plate, and the telescopic bearing plate retracts to move up and down along with the lifting workbench;

the bag body folding mechanism comprises a folding workbench, a turning and folding plate, a bag folding pressure head and a bag pressing plate, wherein the turning and folding plate is arranged at the rear side of the folding workbench and performs forward and backward turning motion relative to the folding workbench, a gap for passing a bag body and performing first folding is formed between the bottom of the clamping and conveying lug folding mechanism and the turning and folding plate, a reverse acting force is generated by relative movement between the turning and folding plate and the clamping and conveying lug folding mechanism, a vertically arranged bag body folding channel is formed in the folding workbench, the bag folding pressure head is driven by a lifting power source to move up and down in the bag body folding channel, and the bag pressing plate is used for pressing the front end of the bag body positioned on the folding workbench to match with the rear end of the bag body folded by the turning and folding plate; initially, first splint with the second splint is vertical to be located bag body folding channel below, roll over the bag pressure head and push down through the bag body folding channel can be with the bag body roll over get into between first splint with the second splint.

Preferably, a positioning bag pressing assembly is arranged at the front side of the bag folding pressure head, the positioning bag pressing assembly comprises a positioning pressure head and a positioning seat, one end of the positioning pressure head is rotationally connected to the positioning seat, the other end of the positioning pressure head is driven by a first power source to swing to be close to or far away from the positioning seat so as to press or loosen a bag body, and the positioning seat is arranged in a first notch on the folding workbench and is driven by a second lifting power source to lift;

the flexible clamp plate that supports with it all is equipped with to roll over the otic placode front end be used for giving the second breach that the locating pressure head gave way, the bag pressing plate is equipped with and is used for giving the third breach that the locating pressure head gave way, turn over and be equipped with on the folded plate and be used for giving roll over the fourth breach that the bag pressure head gave way and be used for giving the fifth breach that the locating pressure head gave way.

Preferably, the power mechanism comprises a telescopic cylinder, the telescopic pressing plate is driven by the telescopic cylinder to perform front-back telescopic movement, and the telescopic cylinder is rotationally connected to the translation workbench and is driven by a second power source to swing up and down so as to drive the telescopic pressing plate to move up and down to press or loosen the bag body;

the turnover folding plate is rotationally connected to the sliding frame through a rotating shaft, the sliding frame is connected with a first transmission belt, the first transmission belt is driven by a belt wheel and a motor to translate back and forth, a first sliding rail is arranged on the sliding frame, a rack is connected to the first sliding rail through a sliding block, the rack is driven by a second telescopic cylinder to move back and forth along the first sliding rail, and a gear meshed with the rack is arranged on the rotating shaft;

preferably, the bag pressing plate is connected below the moving beam, the moving beam is connected on the second sliding rail in a sliding manner, the moving beam is connected with a second transmission belt, the second transmission belt drives the second transmission belt to translate back and forth, the second transmission belt is driven by a belt wheel and a motor, and a third telescopic cylinder for driving the bag pressing plate to move up and down is arranged on the moving beam.

Preferably, a left pressure head and a right pressure head are arranged on the table top of the lifting workbench, and the left pressure head and the right pressure head are driven by a first rotary power source to rotate; the lug folding plate is arranged at the lower side of the translation workbench and is driven to rotate by a second rotary power source.

Preferably, the bag grabbing machine further comprises a bag grabbing machine arm, and the bag grabbing machine arm grabs a bag body and conveys the bag body to the lifting workbench through the translation workbench.

Preferably, a bag body supporting plate is arranged below the bag body folding channel, the bag body supporting plate is driven to lift by a supporting plate driving device, and the bag body supporting plate is used for bearing a bag body between the first clamping plate and the second clamping plate when the bag folding pressure head is pressed down.

Compared with the prior art, the invention has the following technical effects:

according to the plastic bag packaging and bundling device, the folded bag body is turned over from the vertical position to the horizontal position through the bag body turning and conveying device and conveyed to the bag body bundling device, bundling and knotting of the bag body are automatically completed through the bag body bundling device, when bundling is carried out, the bag body is tightly pressed by the first pressing plate on the moving platform, when the bag body moves forward along with the moving platform, bundling belts wrap the bag body backwards from the front side of the bag body through the bundling notch, then the knotting conveying rod moves downwards and moves forwards to match with the knotting machine core to complete bundling of the bag body, after bundling is completed, the knotting conveying rod resets, the bag body moves forwards to the position below the discharging bag pressing plate along with the moving platform, the bag body is tightly pressed on the discharging platform through the discharging bag pressing plate, then the first pressing plate is loosened, and the moving platform resets so that next bundling can be carried out. According to the invention, the bag body is tied and knotted by the knotting conveying rod and the knotting machine core in combination with the moving platform and the first compacting plate, and the bag body is sheathed by the strapping tape, so that the defect that the strapping tape cannot be sheathed outside the folded plastic bag accurately is avoided, the strapping efficiency is improved, the problem of matching failure caused by irregular strapping tape is avoided, and the failure rate is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a plastic bag packing and strapping device provided by the invention;

FIG. 2 is a schematic diagram of the structure of the bag overturning and conveying device and the bag bundling device according to the present invention;

FIG. 3 is a schematic view of another view of the bag overturning and conveying device and the bag bundling device according to the present invention;

FIG. 4 is a schematic diagram showing the structural relationship between a movable platform and a first compacting plate according to the present invention;

FIG. 5 is a schematic view of a knotting transfer lever and its driving apparatus according to the present invention;

FIG. 6 is a schematic diagram of a tension pay-off rack according to the present invention;

FIG. 7 is a schematic diagram of a bag overturning and conveying device according to the present invention;

FIG. 8 is an enlarged schematic view of a portion A of FIG. 3;

FIG. 9 is a schematic view of the structure of the clamping and folding ear mechanism and the bag body receiving mechanism of the present invention;

FIG. 10 is a schematic view of a structure of a folding and sending earphone according to the present invention;

FIG. 11 is a schematic view of the bag folding mechanism and the positioning bag pressing assembly of the present invention;

FIG. 12 is a schematic view of the structure of the folding mechanism of the present invention in which the ear feeding mechanism and the folding mechanism of the bag body are engaged with each other;

FIG. 13 is a schematic view of the structure of a medium pressure bag in the present invention;

FIG. 14 is a schematic view of another view-angle mating structure of the positioning bag-pressing assembly and the bag body folding mechanism (hidden bag-pressing plate) according to the present invention;

fig. 15 is a schematic view of the folding and bundling of the bag according to the present invention.

In the figure: 20-bag body overturning and conveying device, 201-moving frame, 202-linear displacement driving device, 203-first clamping plate, 204-second clamping plate, 205-connecting rod, 206-roller, 207-frame body sliding rail, 208-clamping plate rotating shaft, 209-first sliding rail, 210-second sliding rail, 211-third sliding rail, 212-clamping plate telescopic cylinder, 213-compacting notch, 30-bag body bundling device, 310-moving platform, 311-first compacting plate, 312-second power device, 313-bundling notch, 320-bundling and knotting mechanism, 321-knotting conveying rod, 322-front-back driving cylinder, 323-lifting driving cylinder, 330-tension pay-off rack, 331-supporting frame body, 332-first guiding pulley 333-second guide pulley, 334-torsion wheel, 335-connecting rod, 340-discharging bag pressing plate, 341-third power device, 350-discharging platform, 1-clamping and feeding ear folding mechanism, 11-translation workbench, 12-telescopic pressing plate, 13-ear folding plate, 14-telescopic cylinder, 15-second power source, 16-second rotary power source, 2-bag body receiving mechanism, 21-lifting workbench, 22-telescopic receiving plate, 23-left and right press head, 24-vertical slide rail, 3-bag body folding mechanism, 31-folding workbench, 32-turning plate, 33-bag folding press head, 34-bag pressing plate, 35-bag body folding channel, 36-lifting power source, 37-rotating shaft, 38-gear, 3-bag body folding channel, the bag-pressing assembly comprises a 4-positioning bag-pressing assembly, a 41-positioning pressure head, a 42-positioning seat, a 43-first power source, a 44-second lifting power source, a 100-first notch, a 110-second notch, a 120-third notch, a 130-fourth notch, a 140-fifth notch, a 51-sliding frame, a 53-first sliding rail, a 54-rack, a 55-second telescopic cylinder, a 61-moving beam, a 62-second sliding rail, a 64-third telescopic cylinder, a 7-bag-grabbing manipulator, an 8-bag body, an 8 a-bag body head, an 8 b-bag body tail, a 91-bag body supporting plate and a 92-supporting plate driving device.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention aims to provide a plastic bag packing and bundling device which solves the problems in the prior art, improves the bundling efficiency of plastic bags and reduces the failure rate.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

As shown in fig. 1 to 14, the present embodiment provides a plastic bag packing and strapping apparatus including a bag body overturning and conveying device 20 and a bag body strapping device 30; the bag body overturning and conveying device 20 is used for overturning the folded bag body 8 from a vertical orientation to a horizontal orientation after clamping and conveying the folded bag body to the bag body bundling device 30;

the bag body bundling device 30 comprises a moving platform 310, a bundling and knotting mechanism 320, a tension pay-off rack 330, a discharging bag pressing plate 340 and a discharging platform 350, wherein the moving platform 310 is arranged on a platform sliding rail in a sliding manner and driven by a first power device to reciprocate back and forth, two first compacting plates 311 are arranged on the moving platform 310 at intervals, the first compacting plates 311 are driven by a second power device 312 to move up and down and are used for compacting the bag body 8 on the moving platform 310, and a bundling notch 313 for bundling the bag body is arranged on the moving platform 310 between the two first compacting plates 311;

the tying and knotting mechanism 320 comprises a knotting conveying rod 321 and a knotting machine core, the knotting conveying rod 321 is arranged at the front side of the moving platform 310 and corresponds to the tying notch 313, the knotting conveying rod 321 is driven to move up and down and back and forth by a third power device, the third power device comprises a front and back driving cylinder 322 for driving the knotting conveying rod 321 to move back and forth and a lifting driving cylinder 323 for driving the knotting conveying rod 321 to move up and down, the tying belt passes through a conveying hole at the lower end of the knotting conveying rod 321 after passing through the tension pay-off frame 330 and is connected with the knotting machine core, and the knotting machine core is arranged below the knotting conveying rod 321 and is positioned at the lower side of the tying notch 313 and is used for tying and knotting a bag body in cooperation with the knotting conveying rod 321;

the discharging platform 350 is disposed below the moving platform 310, and the discharging bag pressing plate 340 is disposed at the front side of the knotting conveying rod 321 and corresponds to the bundling notch 313, and the discharging bag pressing plate 340 is driven by the third power device 341 to move up and down, so as to press the bundled bag 8 onto the discharging platform 350.

The bag body overturning and conveying device 20 comprises a moving frame 201, a linear displacement driving device 202, a first clamping plate 203, a second clamping plate 204, a connecting rod 205, rollers 206 and roller slideways, wherein the moving frame 201 is slidably connected to a frame body sliding rail 207 and is driven to reciprocate back and forth by the linear displacement driving device 202, the first clamping plate 203 is rotatably connected to the moving frame 201 through a clamping plate rotating shaft 208, one end of the clamping plate rotating shaft 208 is fixedly connected with one end of the connecting rod 205, the other end of the connecting rod 205 is rotatably connected with the rollers 206, the rollers 206 are rotatably arranged in the roller slideways, the roller slideways comprise a first slideway 209, a second slideway 210 and a third slideway 211 which are sequentially connected, the third slideway 211 is horizontally arranged along the front-back direction with the first slideway 209, the second slideway 210 is connected with the front end of the third slideway 211, and the clamping plate rotating shaft 208 and the third slideway 211 are in the same horizontal plane; initially, the first clamping plate 203 and the connecting rod 205 are in a vertical state, and the roller 206 is positioned in the first slideway 209; when the linear displacement driving device 202 drives the moving frame 201 to move forwards, the roller 206 moves from the first slideway 209 to the third slideway 211 through the second slideway 210, the connecting rod 205 drives the clamping plate rotating shaft 208 to rotate forwards by 90 degrees, and the first clamping plate 203 is turned to be in a horizontal state and moves to the upper part of the moving platform 310; the second clamping plate 204 is disposed in parallel on one side of the first clamping plate 203, and is driven by a clamping plate telescopic cylinder 212 to be close to or far from the first clamping plate 203.

The tension pay-off rack 330 comprises a support frame 331, a first guide pulley 332, a second guide pulley 333 and a torsion wheel 334, wherein the first guide pulley 332 is connected to the support frame 331, the second guide pulley 333 is connected to the torsion wheel 334 through a connecting rod 335, the torsion wheel 334 is connected to the support frame 331 and is provided with a torsion spring on a wheel shaft thereof, the torsion spring provides an elastic force for driving the torsion wheel 334 to rotate, and when the torsion wheel 334 rotates, the second guide pulley 333 is driven to move upwards to return to an initial position through the connecting rod 335, and the strapping tape is led out by a tape reel and sequentially bypasses the first guide pulley 332 and the second guide pulley 333. When the bag body 8 moves forwards along with the moving platform 310 to squeeze the strapping, the strapping is forced to drive the second guide pulley 333 to swing downwards, the swing center of the strapping is the axle center of the torsion wheel 334, the strapping can be ensured to be tightly wrapped around the periphery of the bag body under the action of the torsion spring, the tightness degree of strapping is ensured, and after the strapping is completed, the second guide pulley 333 swings upwards to reset under the action of the torsion spring.

The first clamping plate 203 and the second clamping plate 204 are provided with a pressing notch 213 for giving way to the first pressing plate 311, and the first pressing plate 311 presses the bag body 8 on the moving platform 310 through the pressing notch 213. After the first pressing plate 311 presses the bag body 8 on the moving platform 310 through the pressing notch 213, the clamping plate telescopic cylinder 212 drives the second clamping plate 204 away from the first clamping plate 203, loosens the bag body 8, and then the moving frame 201 is reset to the initial position.

The plastic bag packaging and bundling device provided by the embodiment further comprises a clamping and conveying lug folding mechanism 1, a bag body supporting mechanism 2 and a bag body folding mechanism 3, wherein the clamping and conveying lug folding mechanism 1 moves back and forth between the bag body supporting mechanism 2 and the bag body folding mechanism 3, the clamping and conveying lug folding mechanism 1 and the bag body supporting mechanism 2 are matched with each other to fold lugs, and the clamping and conveying lug folding mechanism 1 and the bag body folding mechanism 3 are matched with each other to fold; the clamping and conveying lug folding mechanism 1 comprises a translation workbench 11, a telescopic pressing plate 12 and a pair of lug folding plates 13 for folding two portable belts, namely a left lug folding plate 13a and a right lug folding plate 13b, namely the two lug folding plates have height differences, no collision occurs in the moving process, the telescopic pressing plate 12 and the lug folding plates 13 are arranged up and down and are arranged on the front side of the translation workbench 11, and the telescopic pressing plate 12 is driven by a power mechanism to move back and forth and move up and down; the two ends of the translation workbench 11 are connected with a third transmission belt, the third transmission belt is driven by a transmission motor to drive the translation workbench 11 to move forwards and backwards, the initial end of the translation workbench is positioned at the rear side of the lifting workbench 21, and the tail end of the translation workbench is positioned above the folding workbench 31;

the bag body bearing mechanism 2 comprises a lifting workbench 21 and a telescopic bearing plate 22 arranged at the rear side of the lifting workbench 21, wherein the rear end of the telescopic bearing plate 22 is provided with a bilaterally symmetrical bevel edge, the telescopic bearing plate 22 stretches out backwards and is positioned between the telescopic pressing plate 12 and the lug folding plate 13, and the telescopic bearing plate 22 retracts to move up and down along with the lifting workbench 21; the left-right symmetrical oblique sides at the rear end of the telescopic support plate 22 are used for enabling the two hand straps to freely droop, the folding lug plate 13 is convenient to fold, the telescopic support plate 22 stretches out backwards and is positioned between the telescopic support plate 12 and the folding lug plate 13 when the folding lug is folded, the folding lug plate 13 rotates to fold the freely drooping part at the bottom of the telescopic support plate 22, and after the folding lug is completed, the telescopic support plate 22 retracts to move up and down along with the lifting workbench 21; two ends of the lifting workbench 21 are in sliding connection with the vertical sliding rail 24, and the lifting workbench 21 is driven by a lifting cylinder to perform up-and-down lifting motion;

the bag body folding mechanism 3 comprises a folding workbench 31, a turnover folding plate 32, a bag folding pressure head 33 and a bag pressing plate 34, wherein the turnover folding plate 32 is arranged at the rear side of the folding workbench 31 and performs forward and backward turnover motion relative to the folding workbench 31, a gap for passing a bag body and performing first folding is arranged between the bottom of the clamping and conveying folding plate 1 and the turnover folding plate 32, reverse acting force is generated by relative movement between the turnover folding plate 32 and the clamping and conveying folding plate 1, the clamping and conveying folding plate 1 clamps the front end (the bag body head 8 a) of the bag body, the bag body 8 drops at the front side of the clamping and conveying folding plate 1, the bag body 8 is conveyed to the folding workbench 31, and when passing through the turnover folding plate 32 in the forward conveying process, the bag body 8 is subjected to first folding (namely, the front end of the bag body is folded upwards) under the backward acting force of the turnover folding plate 32; the folding workbench 31 is provided with a vertically arranged bag folding channel 35, the bag folding pressure head 33 is driven by a lifting power source 36 to move up and down in the bag folding channel 35, and the bag pressing plate 34 is used for pressing the front end (the bag head 8 a) of the bag positioned on the folding workbench 31 to match the folding plate 32 to fold the rear end (the bag tail 8 b) of the bag; initially, the first clamping plate 203 and the second clamping plate 204 are vertically located below the bag body folding channel 35, and the bag folding pressure head 33 is pressed down through the bag body folding channel 35 to fold the bag body 8 between the first clamping plate 203 and the second clamping plate 204.

The front side of the bag folding pressure head 33 is provided with a positioning bag pressing assembly 4, the positioning bag pressing assembly 4 comprises a positioning pressure head 41 and a positioning seat 42, one end of the positioning pressure head 41 is rotatably connected to the positioning seat 42, the other end of the positioning pressure head 41 is driven by a first power source 43 to swing to be close to or far away from the positioning seat 42 so as to press or loosen a bag body, and the positioning seat 42 is arranged in a first notch 100 on the folding workbench 31 and is driven by a second lifting power source 44 to lift.

The front ends of the telescopic pressing plate 12 and the folding ear plate 13 are respectively provided with a second notch 110 for giving the position of the positioning pressing head 41, when the bag body 8 is conveyed onto the folding workbench 31 by the clamping and conveying folding ear mechanism 1, the second lifting power source 44 drives the positioning seat 42 to ascend in the first notch 100 and to be higher than the folding workbench 31, the first power source 43 drives the positioning pressing head 41 to press the bag body 8 onto the positioning seat 42 through the second notch 110, the bag body 8 position is prevented from moving when the clamping and conveying folding ear mechanism 1 returns, the bag pressing plate 34 is provided with a third notch 120 for giving the position of the positioning pressing head 41, interference with the positioning pressing head 41 is prevented when the bag pressing plate 34 presses down the bag body 8, the overturning folding plate 32 is provided with a fourth notch 130 for giving the position of the folding bag pressing head 33 and a fifth notch 140 for giving the position of the positioning pressing head 41, and when the overturning the folding plate 32 overturns to fold the rear end 8b of the bag body upwards, the arrangement of the fifth notch 140 can prevent the overturning plate 32 from interfering with the positioning pressing head 41, and the overturning plate 32, the bag body 8b, after the bag body rear end 8b is folded upwards, the bag body 8b is completely folded, and the bag body is inserted into the fourth notch 33 through the notch 130 after the overturning plate 33 and the bag body 35.

The power mechanism comprises a telescopic cylinder 14, the telescopic pressing plate 12 is driven by the telescopic cylinder 14 to perform back-and-forth telescopic movement, and the telescopic cylinder 14 is rotationally connected to the translation workbench 11 and is driven by a second power source 15 to swing up and down so as to drive the telescopic pressing plate 12 to move up and down to press or loosen the bag body. The telescopic pressing plate 12 can be matched with the lug folding plate 13 to clamp the bag body for conveying. The lug folding plate 13 is arranged at the lower side of the translation workbench 11 and is driven to rotate by the second rotary power source 16, and in the rotating process, one lug folding plate folds one hand strap.

The turning plate 32 is rotatably connected to the carriage 51 through a rotating shaft 37, the carriage 51 is connected with a first transmission belt, the first transmission belt is driven by a belt wheel and a motor to translate back and forth, the carriage 51 is provided with a first sliding rail 53, the first sliding rail 53 is connected with a rack 54 through a sliding block, the rack 54 is driven by a second telescopic cylinder 55 to move back and forth along the first sliding rail 53, and the rotating shaft 37 is provided with a gear 38 meshed with the rack 54. The rack 54 is driven to translate by the second telescopic cylinder 55, and the rack 54 is driven to translate to drive the gear 38 to rotate, so that the turning plate 32 is driven to turn back and forth for upward folding of the tail 8b of the bag body. The first driving belt is driven by a motor and a belt wheel to operate, and the front and rear positions of the sliding frame 51 can be adjusted, so that the front and rear relative positions of the turning plate 32 and the folding workbench 31 are adjusted, and the upward folding length of the bag body 8 is adjusted.

The bag pressing plate 34 is connected below the moving beam 61, the moving beam 61 is connected to the second sliding rail 62 in a sliding manner, the moving beam 61 is connected with a second driving belt, the second driving belt is driven by a belt wheel and a motor to translate back and forth, and a third telescopic cylinder 64 for driving the bag pressing plate 34 to move up and down is arranged on the moving beam 61. The second transmission belt is driven to operate through a motor and a belt wheel, the moving beam 61 is driven to move forwards and backwards, the bag pressing plate 34 can be moved to the position above the position where the bag is required to be pressed, and then the third telescopic cylinder 64 drives the bag pressing plate 34 to move downwards, so that the bag body 8 can be pressed.

The lifting table 21 is provided with a left and right ram 23 on the table top, and the left and right ram 23 is driven to rotate by a first rotary power source. The left and right pressing heads 23 are used for pressing the bag body 8, preventing the bag body 8 from sliding, and positioning the bag body 8.

The plastic bag packing and bundling device provided by the embodiment further comprises a bag grabbing manipulator 7, wherein the bag grabbing manipulator 7 grabs the bag body 8 and conveys the bag body 8 to the lifting workbench 21 through the translation workbench 11, and the bag body 8 is immediately retracted and moved backwards after being placed on the telescopic receiving plate 22 by the bag grabbing manipulator 7. The lifting hairbrush is arranged on the upper side of the translation workbench 11, so that the stacked bag bodies 8 can be brushed smoothly by the lifting hairbrush in the conveying process.

A bag body supporting plate 91 is arranged below the bag body folding channel 35, the bag body supporting plate 91 is driven to lift by a supporting plate driving device 92, and the bag body supporting plate 91 is used for bearing the bag body 8 between the first clamping plate 203 and the second clamping plate 204 when the bag folding pressure head 33 is pressed down. When the bag folding pressure head 33 presses the bag body 8 downwards into the bag body folding channel 35 and enters between the first clamping plate 203 and the second clamping plate 204, the bag body supporting plate 91 carries the bag body 8 and moves downwards along with the bag body 8, so that the bag body 8 can be stably moved downwards to be folded in half.

Working principle: the bag grabbing mechanical arm 7 grabs the tail part 8b of the bag body to move forwards, the bag body 8 is placed on the lifting workbench 21 through the translation workbench 11, at the moment, the telescopic bearing plate 22 stretches out and supports the head part 8a of the bag body, meanwhile, the two hand-held belts freely droop, and the left pressure head 23 and the right pressure head 23 rotate to press the left side and the right side of the bag body;

the telescopic pressing plate 12 stretches out to press the bag body, and the two lug folding plates 13 rotate to fold lugs;

after the lugs are folded, the telescopic pressing plate 12 rises to release the pressure on the bag body, so that the telescopic bearing plate 22 can retract;

the telescopic pressing plate 12 descends again to press the bag body, the telescopic pressing plate is matched with the lug folding plate 13 to clamp the head 10a of the bag body, the left pressure head 23 and the right pressure head 23 rotate to release the pressure on the bag body, and meanwhile, the lifting workbench 21 descends to move forward to give way to the translation workbench 11, so that the tail 10b of the bag body freely sags;

as shown in fig. 15, the telescopic pressing plate 12 and the ear folding plate 13 cooperate with each other to clamp the head 10a of the folded bag body to move forward into the bag body folding mechanism 3, when the folded bag body passes through the folding plate 32 in the forward conveying process, the sagged bag body finishes the first folding (that is, the head 8a of the bag body is folded upwards) under the backward acting force of the folding plate 32, after the first folding, the middle part of the bag body is positioned on the folding workbench 31, and the tail 8b of the bag body falls onto the folding plate 32;

the bag pressing plate 34 stretches out to press the rest part of the bag body except the tail part 8b, and meanwhile, the positioning pressure head 41 also presses the head part 8a of the bag body downwards, the overturning folding plate 32 overturns forwards by 180 degrees to fold the tail part 10b of the bag body upwards, namely, the tail part 8b of the bag body covers the upper side of the head part 8a of the bag body;

at this time, each fourth notch 130 on the turning folding plate 32 is exactly aligned with each pressing piece of the bag folding press head 33 one by one up and down, and the center position of the folded bag body is exactly aligned with the bag body folding channel 35 of the folding workbench 31, the bag pressing plate 34 is lifted and retracted, the positioning press head 41 is lifted to release the bag body, the bag body is pressed into the bag body folding channel 35 by the bag folding press head 33 being lowered, and the bag body is folded in half and enters between the first clamping plate 203 and the second clamping plate 204 after gradually moving downwards along with the bag body supporting plate 91 in the bag body folding channel 35;

then, the second clamping plate 204 is driven by the clamping plate telescopic cylinder 212 to be close to the first clamping plate 203, the bag body 8 is clamped between the first clamping plate 203 and the second clamping plate 204, the linear displacement driving device 202 drives the movable frame 201 to move forwards, the roller 206 moves to the third sliding way 211 from the first sliding way 209 through the second sliding way 210 under the guiding action of the roller sliding way to the roller 206, and the connecting rod 205 drives the clamping plate rotating shaft 208 to rotate forwards by 90 degrees, at the moment, the first clamping plate 203 is turned to be in a horizontal state and moves to the upper part of the movable platform 310;

the second power device 312 drives the first pressing plate 311 to move downwards, the first pressing plate 311 presses the bag body 8 on the moving platform 310 through the pressing notch 213, then the clamping plate telescopic cylinder 212 drives the second clamping plate 204 to be far away from the first clamping plate 203, the bag body 8 is loosened, and then the moving frame 201 is reset to the initial position;

the moving platform 310 drives the bag body 8 to move forwards, the bag body 8 extrudes strapping tapes forwards to enable the strapping tapes to be wrapped on the upper side and the lower side of the bag body 8, then the knotting conveying rods 321 sequentially move downwards and move forwards, the bag body 8 is tied and knotted by matching with the knotting machine core, and then the knotting conveying rods 321 are reset;

the third power device 341 drives the discharging bag pressing plate 340 to move downwards, the bundled bag bodies are pressed on the discharging platform 350, the first pressing plate 311 moves upwards to loosen the bag bodies, and then the moving platform 310 resets, so that bundling of the bag bodies is completed.

The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (10)

1. A plastic bag packaging and strapping device, which is characterized in that: comprises a bag body overturning and conveying device and a bag body bundling device; the bag body overturning and conveying device is used for overturning the folded bag body from a vertical position to a horizontal position after clamping and conveying the folded bag body to the bag body bundling device;

the bag body bundling device comprises a moving platform, a bundling and knotting mechanism, a tension pay-off rack, a discharging bag pressing plate and a discharging platform, wherein the moving platform is arranged on a platform sliding rail in a sliding mode and driven by a first power device to reciprocate back and forth, two first compacting plates are arranged on the moving platform at intervals, the first compacting plates are driven by a second power device to move up and down and are used for compacting the bag body on the moving platform, and bundling notches for bundling the bag body are formed in the moving platform between the two first compacting plates;

the tying and knotting mechanism comprises a knotting conveying rod and a knotting machine core, the knotting conveying rod is arranged on the front side of the moving platform and corresponds to the tying notch, the knotting conveying rod is driven by a third power device to move up and down and back and forth, the tying belt passes through a conveying hole at the lower end of the knotting conveying rod after passing through the tension pay-off rack and is connected with the knotting machine core, and the knotting machine core is arranged below the knotting conveying rod and is positioned on the lower side of the tying notch and is used for tying and knotting a bag body in cooperation with the knotting conveying rod;

the discharging platform is arranged below the moving platform, the discharging bag pressing plate is arranged on the front side of the knotting conveying rod and corresponds to the bundling notch, and the discharging bag pressing plate is driven by a third power device to move up and down and is used for tightly pressing bundled bags on the discharging platform.

2. The plastic bag packaging and strapping device of claim 1 wherein: the bag body overturning and conveying device comprises a moving frame, a linear displacement driving device, a first clamping plate, a second clamping plate, a connecting rod, rollers and roller slide ways, wherein the moving frame is connected to a frame body slide rail in a sliding mode and driven by the linear displacement driving device to reciprocate back and forth, the first clamping plate is connected to the moving frame in a rotating mode through a clamping plate rotating shaft, one end of the clamping plate rotating shaft is fixedly connected with one end of the connecting rod, the other end of the connecting rod is connected with the rollers in a rotating mode, the rollers are arranged in the roller slide ways in a rolling mode, the roller slide ways comprise a first slide way, a second slide way and a third slide way which are sequentially connected, the third slide way is horizontally arranged with the first slide way along the front-back direction, the third slide way is located above the front side of the first slide way, the second slide way is connected with the rear end of the first slide way, and the front end of the third slide way, and the clamping plate rotating shaft and the third slide way are located in the same horizontal plane; initially, the first clamping plate and the connecting rod are in a vertical state, and the roller is in the first slideway; when the linear displacement driving device drives the movable frame to move forwards, the roller moves from the first slideway to the third slideway through the second slideway, the connecting rod drives the clamping plate rotating shaft to rotate forwards by 90 degrees, and the first clamping plate is turned to be in a horizontal state and moves to above the movable platform; the second clamping plate is arranged on one side of the first clamping plate in parallel and driven by the clamping plate telescopic cylinder to be close to or far away from the first clamping plate.

3. The plastic bag packaging and strapping device of claim 1 wherein: the tension pay-off rack comprises a support frame body, a first guide pulley, a second guide pulley and a torsion wheel, wherein the first guide pulley is connected to the support frame body, the second guide pulley is connected to the torsion wheel through a connecting rod piece, the torsion wheel is connected to the support frame body and is provided with a torsion spring on a wheel shaft of the torsion wheel, the torsion spring provides elastic force for driving the torsion wheel to rotate, the torsion wheel drives the second guide pulley to move upwards and reset to an initial position through the connecting rod piece when rotating, and a strapping tape is led out by a tape disc and sequentially bypasses the first guide pulley and the second guide pulley.

4. The plastic bag packaging and strapping device of claim 2 wherein: the first clamping plate and the second clamping plate are provided with a pressing notch for giving way to the first pressing plate.

5. The plastic bag packaging and strapping device of claim 2 wherein: the bag body folding and folding device also comprises a clamping and conveying lug folding mechanism, a bag body receiving mechanism and a bag body folding mechanism, wherein the clamping and conveying lug folding mechanism moves back and forth between the bag body receiving mechanism and the bag body folding mechanism; the clamping and sending earphone folding mechanism comprises a translation workbench, a telescopic pressing plate and a pair of earphone folding plates for folding two portable belts, wherein the telescopic pressing plate and the earphone folding plates are arranged up and down and are arranged on the front side of the translation workbench, and the telescopic pressing plate is driven by a power mechanism to move back and forth and move up and down;

the bag body bearing mechanism comprises a lifting workbench and a telescopic bearing plate arranged at the rear side of the lifting workbench, wherein the rear end of the telescopic bearing plate is provided with bilaterally symmetrical bevel edges, the telescopic bearing plate stretches out backwards and is positioned between the telescopic pressing plate and the lug folding plate, and the telescopic bearing plate retracts to move up and down along with the lifting workbench;

the bag body folding mechanism comprises a folding workbench, a turning and folding plate, a bag folding pressure head and a bag pressing plate, wherein the turning and folding plate is arranged at the rear side of the folding workbench and performs forward and backward turning motion relative to the folding workbench, a gap for passing a bag body and performing first folding is formed between the bottom of the clamping and conveying lug folding mechanism and the turning and folding plate, a reverse acting force is generated by relative movement between the turning and folding plate and the clamping and conveying lug folding mechanism, a vertically arranged bag body folding channel is formed in the folding workbench, the bag folding pressure head is driven by a lifting power source to move up and down in the bag body folding channel, and the bag pressing plate is used for pressing the front end of the bag body positioned on the folding workbench to match with the rear end of the bag body folded by the turning and folding plate; initially, first splint with the second splint is vertical to be located bag body folding channel below, roll over the bag pressure head and push down through the bag body folding channel can be with the bag body roll over get into between first splint with the second splint.

6. The plastic bag packaging and strapping device of claim 5 wherein: the front side of the bag folding pressure head is provided with a positioning bag pressing assembly, the positioning bag pressing assembly comprises a positioning pressure head and a positioning seat, one end of the positioning pressure head is rotationally connected to the positioning seat, the other end of the positioning pressure head is driven by a first power source to swing to be close to or far away from the positioning seat so as to press or loosen a bag body, and the positioning seat is arranged in a first notch on the folding workbench and is driven by a second lifting power source to lift;

the flexible clamp plate that supports with it all is equipped with to roll over the otic placode front end be used for giving the second breach that the locating pressure head gave way, the bag pressing plate is equipped with and is used for giving the third breach that the locating pressure head gave way, turn over and be equipped with on the folded plate and be used for giving roll over the fourth breach that the bag pressure head gave way and be used for giving the fifth breach that the locating pressure head gave way.

7. The plastic bag packaging and strapping device of claim 5 wherein: the power mechanism comprises a telescopic cylinder, the telescopic pressing plate is driven by the telescopic cylinder to perform back-and-forth telescopic movement, and the telescopic cylinder is rotationally connected to the translation workbench and is driven by a second power source to swing up and down so as to drive the telescopic pressing plate to move up and down to press or loosen the bag body;

the turnover folding plate is rotationally connected to the sliding frame through a rotating shaft, the sliding frame is connected with a first transmission belt, the first transmission belt is driven by a belt wheel and a motor to translate back and forth, a first sliding rail is arranged on the sliding frame, a rack is connected to the first sliding rail through a sliding block, the rack is driven by a second telescopic cylinder to move back and forth along the first sliding rail, and a gear meshed with the rack is arranged on the rotating shaft;

the bag pressing plate is connected below the moving beam, the moving beam is connected to the second sliding rail in a sliding mode, the moving beam is connected with the second transmission belt, the second transmission belt drives the second transmission belt to translate back and forth, the second transmission belt is driven by a belt wheel and a motor, and a third telescopic cylinder for driving the bag pressing plate to move up and down is arranged on the moving beam.

8. The plastic bag packaging and strapping device of claim 5 wherein: a left pressure head and a right pressure head are arranged on the table top of the lifting workbench, and the left pressure head and the right pressure head are driven by a first rotary power source to rotate; the lug folding plate is arranged at the lower side of the translation workbench and is driven to rotate by a second rotary power source.

9. The plastic bag packaging and strapping device of claim 5 wherein: the bag grabbing mechanical arm is used for grabbing the bag body and conveying the bag body to the lifting workbench through the translation workbench.

10. The plastic bag packaging and strapping device of claim 5 wherein: the bag body supporting plate is arranged below the bag body folding channel and driven to lift by the supporting plate driving device, and the bag body supporting plate is used for bearing a bag body between the first clamping plate and the second clamping plate when the bag folding pressure head is pressed down.