CN109515802A - A kind of polybag strapper and its binding method - Google Patents

Abstract

The invention discloses a kind of polybag strapper and its binding methods, are tied up using annular rubber band to the polybag for being folded into strip.It mainly include rack, vibration disk device, polybag conveying device, it is characterized by: being additionally provided with U-shaped notch on the vibration disk device, it is additionally provided with rubber band device for spreading in the corresponding position of the U-shaped notch, the rubber band device for spreading mainly includes bracket, first time strut, bottom side strut and two side braces.Annular rubber band is supportted rectangularity first by first time strut, and the long ring-like rubber band to have narrowed of support is easy to remove from U-shaped notch, and rectangular rubber band is supportted big squarely or diamond shape respectively again by bottom side strut and two side braces.Present invention omits the manipulator rubber band grass-hoppers of the prior art, have simplified working link, so that the operation is stable, simple and compact for structure, distracted rubber band elasticity is uniform, high yield rate.

Description

A kind of polybag strapper and its binding method

Technical field

The present invention relates to a kind of polybag strapper and its binding methods, specifically a kind of to use annular rubber band to modeling The strapper and its binding method that material bag is bundled.

Background technique

The polybag produced automatically by Bag Making Machine, for convenient for storage, sale and use, these plastics need to fold Grow up strip, is then tied up again in the middle position for the polybag for being folded into strip with annular rubber band, it then could be into Enter market.

Authorization Notice No. CN208070086U discloses a kind of automatic flexible strapping machine (hereinafter referred to as documents 1), main It include: major ingredient feeding mechanism, auxiliary material feeding mechanism, banding mechanism.Its banding mechanism includes dilator and manipulator.Shen Qing Publication Number CN108773518A discloses a kind of " automatic bonding unit of plastic bag making machine " (hereinafter referred to as documents 2).It is led It include: polybag feeding mechanism, rubber band arrangement output mechanism, banding mechanism.Its banding mechanism includes that dilator and rubber band turn Mechanism is sent, " rubber band that the rubber band transfer device is used to arrange rubber band output mechanism output is transferred to the dilator ".Application Publication No. CN108910465A discloses a kind of " the rubber band conveying device of automatic flexible strapping machine " (hereinafter referred to as documents 3).Its Specifically include that vibrating disk, vibrator, manipulator and mechanical arm drive mechanism, it is characterised in that: be equipped with gear in the upper end of the baffle Plate is equipped on the baffle for detecting the rubber band detection device for whether having rubber band on the inside of baffle；In the vibration disk device The inside adjacent of upside and the baffle is equipped with a notch ----, manipulator grabs skin from the discharge port of vibration disk device It is transmitted on 4 struts again after muscle.

Compared by analysis: the major ingredient feeding mechanism of documents 1 actually just contains the polybag of documents 2 Feeding mechanism；The rubber band that its auxiliary material feeding mechanism actually just contains documents 2 arranges transfer device.Documents 1 Banding mechanism and the banding mechanism of documents 2 be it is identical, no matter documents 1 or documents 2 or even documents 3, it is all to be grabbed the rubber band in vibrating disk by manipulator and mechanical arm drive mechanism, then using linear motion, anti- Transhipment is dynamic, after a lot of bother after be transferred on rubber band device for spreading again.Its problem is: first is that the skin after manipulator grabs rubber band Influential point of tendons is sagging, and the sagging round rubber band internal diameter originally that will lead to of rubber band becomes ellipse, this is unfavorable for four struts It is inserted into simultaneously, the success rate inserted is smaller, this seriously affects the job stability of machine；Second is that rubber band is caught by manipulator It is easy to shake during transfer, shake, the long period can just settle out.The rubber band of shaking is difficult to make four struts reliably It is inserted into the inner hole of rubber band, it is necessary to select biggish rubber band, increase is tied up cost by this；Third is that since it is desired that manipulator transfers The working procedure of rubber band will first be grabbed rubber band by manipulator, then on being transferred to strut, from vibration disk device Come over, in the past, increases the chance of error after a lot of bother, also influence the speed tied up and working efficiency；Fourth is that manipulator Running track includes linear motion and rotary motion, and de- gusset, baffle ring etc. are also needed on rubber band dilator.These are all needed Space is increased, so that machine volume increases, structure is complicated, and manufacturing cost is higher.

Application publication number CN108688888A discloses " a kind of packaging bag strapper " (hereinafter referred to as documents 4).Its It include: rubber band screening plant, rubber band device for spreading and packaging bag conveying device.Rubber band device for spreading therein includes rack, set Rubber band clamp hand, lateral spreading mechanism and vertical spreading mechanism.It has problems in that: when two contact pins of lateral spreading mechanism After rubber band is laterally strutted, the length of the circumference of rubber band can be divided into two sections in the position of two contact pins, because of skin Muscle elasticity with higher, in the case where the relative position of two contact pins is constant, when tensing or tear (two contact pins) top That section of rubber band when can only that section of rubber band above stretching, and following that section of rubber band is because cannot be by there are two the resistance of contact pin Stretching, this phenomenon are generally referred to as " not walking on the rope ".Two support rubber band clamp hands described in the documents 4 are by that section of top Although be capable of forming when rubber band is propped up upwards one it is trapezoidal can cover on polybag, but can only two contact pin tops of stretching that One section of rubber band, this makes that section of following rubber band more loose and that section of rubber band above is supportted tightly to be easy very much and be broken.Namely Say: it includes lateral spreading mechanism and vertical spreading mechanism that the rubber band of documents 4, which struts transposition, when lateral spreading mechanism will be annular Form two sections after rubber band support support squarely, and two support rubber band clamp hands of vertical spreading mechanism can only by top you one section Rubber band support is big, that section of following rubber band is unable to stretching, and that section of rubber band of top supports tightly to be easily broken off very much, exactly because also This support rubber band mode elasticity is different, so the more difficult adaptation market of this strapper.

Summary of the invention

The technical problems to be solved by the present invention are: a kind of polybag strapper and its binding method, using ring-like rubber band The polybag folded up is tied up as tie string, provides a kind of simple and stable structure for polybag bag making folding machine, A kind of high-efficient polybag strapper and its binding method.

To realize the above-mentioned technical purpose, the technical scheme is that a kind of polybag strapper, including rack, vibration Disk device, polybag transmission device, it is characterised in that: U-shaped notch is equipped in the discharge port position of the vibration disk device, The corresponding position of the U-shaped notch is additionally provided with rubber band device for spreading, and the rubber band device for spreading includes bracket, the bracket On be additionally provided with and tie up mouth, be additionally provided with first time strut, bottom side strut, two side stays on the peripheral bracket position for tying up mouth Bar struts cylinder, and the first time strut is located at position corresponding with the opening direction of U-shaped notch, the bottom side strut It is located at position corresponding with the bottom side of U-shaped notch, two side braces are respectively provided at the corresponding position in two sides of U-shaped notch, The first time strut, bottom side strut, two side braces respectively with strut cylinder and connect, the bracket and the rack it Between be also connected with insertion movement mechanism.

A kind of binding method of polybag, includes the following steps:

Step 1: first time strut, bottom side strut, two side braces move forward after closing up to centre with bracket, from U-shaped notch In be inserted by the inner hole of the rubber band of the oriented and ordered output of vibration disk device；

Step 2: first time strut, which is opened, stretches the opening direction of the U-shaped notch of a lateral edge of rubber band, by the rubber band of annular It is drawn into oblong；

Step 3: being narrowed by the rubber band that first time strut is drawn into oblong, with branch under the driving of insertion movement mechanism Frame moves back disengaging vibration disk device from the position of U-shaped notch；

Step 4: bottom side strut stretches the corresponding direction in the bottom side of rubber band to U-shaped notch, by the oblong of rubber band into The support of one step is long, extends；

Step 5: two side braces are corresponding to the two sides of U-shaped notch respectively by rubber band between first time strut and bottom side strut Direction strut, support it is big；

Step 6: polybag is extend by relative motion between rubber band device for spreading and the mechanical folder of polybag transmission device It ties up in mouth, and during polybag extend into and ties up mouth, is hung in first time strut, bottom side strut, two side braces On rubber band slide, the rubber band of landing binds on polybag under the action of screen resilience.

The vibration disk device can be such that mixed and disorderly unordered workpiece automatically becomes and align, is in good order, be defeated one by one Out.The vibration disk device is also equipped with the functions such as sorting, detection, counting, is other than the Orienting ordered arrangement for meeting workpiece A kind of well known high-tech product being widely used.Because it has detection function, when multiple annular rubber bands of the present invention By in an orderly manner arrangement be transported to discharge port when, detection device such as optoelectronic switch, close to switch etc. be able to detect that rubber band The position of discharge port position or U-shaped notch is reached, vibrating disk can be timely controlled and stop vibration, after taking the rubber band away Vibrating disk can start again at vibration, and this interrupted oscillating enables the spiral rubber band along vibrating disk of rubber band one by one Output track is one by one by the discharge port position of intermittent delivery to vibration disk device, i.e., the position of described U-shaped notch.

The U-shaped notch is located at the position of the vibrating disk discharge port, generally lies in the rubber band conveying of vibration disk device The upside of track, width should be less than the diameter of elastic tape, after closing up greater than first time strut, bottom side strut and two side braces Overall width, can make multiple struts closed up in U-shaped notch front and back pass freely through.The U-shaped notch, opening direction It can be longitudinal opening, i.e., the opening direction of U-shaped notch upward, is also possible to left and right transverse opening, is also possible to inclined direction. It should be according to the direction of transfer of polybag transmission device, the posture of holding plastic bags or according to the polybag for being folded into strip Form determine the opening direction of U-shaped notch.If the opening direction of U-shaped notch is longitudinal opening either transverse opening, The form for the rubber band being so softened is diamond shape, if the opening direction of U-shaped notch is inclined direction setting, is softened The form of rubber band be exactly rectangular.

The bracket is similar to a plate body or box-shaped body, be also possible to it is a kind of by surround rectangular of multiple struts or Polygon, the bracket can carry out relative motion between the vibration disk device, can also be with the polybag It is made a relative move between transmission device.

Described ties up mouth, corresponding with the U-shaped notch, and shape is tied up with distracted rubber band form and needs Polybag shape it is corresponding, and tie up mouth and should be greater than mechanical front end exterior contour when being clipped in holding plastic bags, be used for Making the position at the middle part for the polybag for being folded into strip or more can extend into wherein.

The first time strut is arranged separately in described one and struts on cylinder, and described struts the fixed peace of cylinder Mounted in the top bracket position for tying up mouth, after first time strut stretches out under the driving for strutting cylinder with the vibrating disk U-shaped notch correspondence on device.For strutting the side of rubber band first along the opening direction of the U-shaped notch, make original This round rubber band is supportted into the form for being similar to oblong, is easy from vibration disk device so that rubber band narrows It is removed in U-shaped notch.

The bottom side strut is located at the corresponding position in bottom side of the U-shaped notch as a preferred technical solution, i.e., with The first time strut is corresponding up and down.For rubber band further to be supportted to long extension from the other side.The bottom side strut is also only It is vertical to be connected to one and strut on cylinder.

Two side braces will at least be arranged two, and every side is arranged one, is respectively provided at the U-shaped notch The corresponding position in two sides, for rectangle rubber band further to be strutted squarely or diamond shape to two sides.Described at least two liang Side brace can be connected to two and strut on cylinder, can also strut cylinder by one to drive.

It is described to strut cylinder, it is rack-mount it is described tie up on the peripheral position of mouth, include guide rod cylinder, slide unit gas Cylinder etc..For driving the first time strut, bottom side strut, two side braces to extend and retract.In the drive for strutting cylinder It, can be from the inner hole that the U-shaped notch is inserted into rubber band, when four struts all retract when four struts all stretch out under dynamic Annular rubber band can be supportted to big diamondwise or rectangular.

The cylinder that struts is a kind of double-rod cylinder as a preferred technical solution,.Double-rod cylinder has cylinder rod not The characteristic of rotation, so as to guarantee that strut will not be swung.The mode of double-rod cylinder is substituted there are also very much, such as: guide rod cylinder, Slider cylinder, common cylinder accessory rail sliding block etc..

The insertion movement mechanism is connected between the bracket and rack, for driving the bracket to carry out Linear motion or rotary motion, pendulum motion, between mobile the rubber band device for spreading and the vibration disk device Relative position makes strut be inserted into U-shaped notch or leaves U-shaped notch.

The insertion movement mechanism includes guide rail, sliding block, cylinder, the sliding block peace as a preferred technical solution, On bracket, the guide rail is mounted in the rack, and the cylinder is connected between bracket and rack.

The cylinder includes a kind of multiposition cylinder as a preferred technical solution, and the multiposition cylinder is one Kind cylinder rod is capable of the cylinder that multistage stretches out, and can be realized multi-section stroke.It can be a kind of double rod cylinders, i.e. every cylinder has The cylinder of two cylinder rods, two cylinders can also be cascaded use.

As one of the numerous embodiments of insertion movement mechanism, the insertion movement mechanism includes a kind of electronic slide unit Or slider cylinder, the bracket are connected on the slide unit of the electronic slide unit or slider cylinder, carriage saddle is mounted on described Rack on.

As another embodiment of insertion movement mechanism, the insertion movement mechanism is a kind of oscillating cylinder, institute The side for the bracket stated is hinged in the rack, and the oscillating cylinder is connected between the bracket and rack, The driving lower bracket of oscillating cylinder is relative to the U-shaped notch reciprocally swinging.To make strut be inserted into the U-shaped notch In.The oscillating cylinder can also be merged with common cylinder and rocker arm and be used, and one end of the cylinder is connected to described In rack, cylinder rod is connected on rocker arm, and rocker arm is connected on the bracket or on hinge column.The cylinder shakes in driving It can make 90 degree of described bracket rotary oscillation or more when arm.

The polybag transmission device, for the polybag for being folded into strip to be transmitted to the operating position tied up, It can also directly transport and extend into described tie up in mouth.Including numerous embodiments such as mechanical folder, mechanical arm, pneumatic-fingers, It can be front-rear direction conveying, be also possible to left and right directions conveying, be also possible to up and down direction transmission.Polybag is transmitted and is filled It sets, all gives specific embodiment in above-mentioned documents, this will not be detailed here.

For testing agency of vibration disk device, such as optoelectronic switch, close switch and control system etc., these are all It is itself to have in vibration disk device, and be all early widely used, it from the market or in Taobao can be set of It buys, details are not described herein.

By adopting the above-described technical solution, the beneficial effects of the present invention are: compared with documents 1,2,3, due to The manipulator and mechanical arm drive mechanism for transferring rubber band is omitted, not only makes machine compact simple in structure, but also It also eliminates manipulator crawl and transports the working link of rubber band, not only increase and tie up speed, and the reduction of working link Nature can reduce the probability of machine operation fault, so that machine operation is stablized；The manipulator disclosed in the above-mentioned documents transfers The process of rubber band is analyzed, and manipulator will be just inserted on multiple struts after catching rubber band by horizontal and vertical movement Because rubber band it is flexible be easy it is sagging, make originally just round rubber band become ellipse, and rubber band transfers after a lot of bother It is easy to shake when coming over to tremble, these factors all will seriously affect the reliability of strut insertion, and rubber band disclosed by the invention is It is tilted on U-shaped notch, is to carry out strut insertion in the state of this static and positive round, so the stability of insertion It is high.Compared with documents 4: first time strut and bottom side strut of the invention, which first can support rubber band, to be grown, by the circle of rubber band Zhou Changdu is divided into two sections, and then two side braces from the centre of two sections of isometric rubber bands but also are divided into two respectively not only, so, Cricoid rubber band, which is almost averaged, is divided into 4 sections, and the form that this 4 sections of rubber bands surround is substantially opposite with the form of polybag It answers, the tightness of rubber band is uniform, reduces breakage, reduces and ties up cost.This has substance compared with above-mentioned documents The characteristics of and progress.

Detailed description of the invention

Fig. 1 is the principle schematic diagram of embodiment one；

Fig. 2 is the structural principle top view of embodiment one；

Fig. 3 is the structural principle leftschematic diagram of the rubber band device for spreading of embodiment one；

Fig. 4 to Figure 11 is the work step and operation principle schematic diagram of embodiment one

Figure 12 is the mechanism principle top view of embodiment two；

Figure 13 to Figure 14 is the operation principle schematic diagram of embodiment two.

In figure: 1- rack；2- vibration disk device；21-U type notch；22- rubber band output track；3- machinery folder；31- conveying Cylinder；32- guide rail；33- sliding block；4- bracket；40- ties up mouth；41- first time strut；The bottom side 42- strut；Two side brace of 43-； 44- double-rod cylinder；5- multiposition cylinder；51- guide rail；52- sliding block；53-- oscillating cylinder；54- hinge column；6- rubber band；7- plastics Bag.

Specific embodiment

In order to comprehensively disclose technical solution of the present invention, it is specifically described below by embodiment.In the present invention Description in, the left side of attached drawing is exactly front of the present invention, the right of attached drawing be exactly it is of the present invention below.

It is as shown in Figure 1 to 11: a vibration disk device 2 to be installed before rack 1, in the vibration disk device 2 A U-shaped notch 21 is arranged in the end upper side position of rubber band output track 22, and the U-shaped notch is exactly that a rectangle lacks Mouthful, so that the width of U-shaped notch is less than the diameter of annular rubber band 6, make the opening up of U-shaped notch, bottom is in rubber band output The upside of track 22.One rubber band device for spreading, rubber band device for spreading are set on U-shaped notch 21 backward corresponding shelf position Including bracket 4, bracket 4 is a kind of rectangular plate body, is arranged one on the middle position of bracket 4 and ties up mouth 40, makes to tie up Mouthfuls 40 shape holds that the front end profile of polybag 7 is corresponding with mechanical folder 3, and the polybag 7 for clamping mechanical folder 3 Front and back middle section position, which can extend into, ties up mouth 40；In the upside for tying up mouth 40 branch corresponding with the opening direction of U-shaped notch 21 One double-rod cylinder 44 is installed in rack position, first time strut 41 is installed on the cylinder rod of the double-rod cylinder 44, is lacked along U-shaped The corresponding position in bottom side of mouth 21 is that a double-rod cylinder 44 is installed in the lower position for tie up mouth 40, in the double-rod cylinder 44 Bottom side strut 42 is installed on cylinder rod；First time strut 41 and bottom side strut 42 in-between corresponding middle position two A double-rod cylinder 44, the gas of two double-rod cylinders 44 are installed on the corresponding backing positions in two sides of that is, U-shaped notch 21 in side respectively One two side brace 43 is installed respectively in cylinder rod；Stretch first time strut 41 and bottom side strut 42 and two two side braces 43 all It can close up after out in the centre for tying up mouth 40；The insertion movement mechanism includes: vibrating disk dress on the rack It sets front-rear direction behind 2 and two guide rails 51 is installed side by side, sliding block 52 is installed respectively at left and right sides of the lower end of bracket 4, makes to prop up Frame 4 is slid back and forth and is mounted in rack 1 by sliding block 52 and guide rail 51, one multidigit of connection installation between bracket 4 and rack 1 Set cylinder 5；Polybag transmission device includes: to install a guide rail 32 at rear portion of rack 1 or so, and sliding block is passed through on guide rail 32 33 are slidably installed a mechanical folder 3, one cylinder 31 of connection installation between rack 1 and mechanical folder 3.

Specific work process is as follows: as shown in Figure 4: under original state, the cylinder rod of four double-rod cylinders 44 is all to stretch out , first time strut 41, bottom side strut 42, two side braces 43 are closed up to intermediate stretch out for tying up mouth 40.Work as vibrating disk When 2 operation vibration of device, the rubber band 6 being previously positioned in vibrating disk can be orderly alignedly along spiral rubber band output track 22 to the direction of discharge port, that is, U-shaped notch 21 position walking, when the rubber band 6 of foremost goes to the position of U-shaped notch 21, vibration The detection device of Moving plate device is detecting rubber band 6 in place and can issue afterwards that a control signal makes vibrating disk stop vibration；Firstly, Multiposition cylinder 5 opens first one section of lesser distance of Forward of stroke driving arm 4, i.e. the cylinder rod of multiposition cylinder 5 is stretched One section out, the Forward of driving arm 4 makes first time strut 41, bottom side strut 42 and two side braces 43 from U-shaped on vibration disk device 2 It is inserted into behind notch 21 in the inner hole of rubber band 6, forms state as shown in Figure 5；Later, that double-rod cylinder 44 above Release cylinder rod retracts that first time strut 41 is driven to move up, and the upside of rubber band 6 is supportted into one similar to long oval upwards Shape forms such as Fig. 6 state shown in Fig. 7 so that the left and right width of rubber band is narrower than the width of U-shaped notch 21；Later, multidigit First stroke release of cylinder 5 is set, driving arm 4 and strut are moved back to initial position, at this time because annular rubber band 6 is by longitudinal direction Its width is narrower than U-shaped notch 21 after strutting rectangularity, so rubber band 6 can be with bracket 4, first time strut 41, bottom side strut 42 And two side brace 43 leave vibration disk device 2 and its U-shaped notch 21 together, form state as shown in Figure 8；Then, downside That double-rod cylinder 44 open driving bottom side strut 42 by rubber band 6 to the bottom side direction of U-shaped notch 21 stretch, so, Rubber band is divided into two strands of left and right by the state of support rectangularity, first time strut 41 and bottom side strut 42 by annular rubber band 6, is formed State as shown in Figure 8；Later, two double-rod cylinders 44 open simultaneously two two side braces 43 of driving respectively for two strands of rubber bands Centre is strutted to two sides, and the diamondwise so that annular rubber band 6 is stretched forms state as shown in Figure 9；At this point, mechanical folder 3 is It is clamped to the polybag 7 for being folded into growth strip from the folding device of polybag, then makes machinery under the driving of cylinder 31 Folder 3 holds the position that polybag 7 was transmitted to and tied up 40 correspondence of mouth along guide rail 32；Then, multiposition cylinder 5 opens the Two strokes, driving arm 4 continue to move back, and the middle section position by the polybag 7 of mechanical 3 clamping of folder is made to extend into distracted rubber band Among 6 opening, state as shown in Figure 10 is formed；During bracket 4 continues to move back, so that the front end touching of mechanical folder 3 And rubber band 6 has been arrived, rubber band 6 can be pushed away cunning from first time strut 41 and bottom side strut 42 and two side braces 43 by machinery folder 3 It falls, the rubber band 6 for pusheding away from landing is shunk under the action of screen resilience to be bundled on polybag 7, and state as shown in figure 11 is formed； Later, multiposition cylinder 5 discharges second stroke, and bracket 4 is made to be restored to initial position, and the polybag tied up is from tying up in mouth Expose.So far, work completion is tied up.

Embodiment two, as shown in figure 12: being in place of embodiment two and the main difference of embodiment one: one is bracket 4 Side be hinged in rack 1, the insertion movement mechanism is a kind of oscillating cylinder 53；The second is the U-shaped notch 21 Opening direction be to be obliquely installed, rubber band 6 is square after being softened.Hinge column 54 is installed (referring to figure in the side of bracket 4 14) it is hinged on bracket 4 in rack 1 by hinge column 54, one oscillating cylinder 53 is installed in hinge column 54 and 1 bracket of rack, Vibration disk device 2 is mounted on right side, U-shaped notch 21 before bracket 4 and is located at the left side of vibration disk device；Polybag conveying device Guide rail 32 and conveying 31 front-rear direction of cylinder be mounted on the rack.

The specific work process of embodiment two is as follows: as shown in figure 12, original state lower bracket 4 is transverse state, firstly, First time strut 41, bottom side strut 42 and two side braces 43 are closed up under the driving of double-rod cylinder 44, then oscillating cylinder 53 Open driving arm 4 to the direction of U-shaped notch 21 swing 90 degree, make the first time strut 41 after closing up, bottom side strut 42 and Two side braces 43 are swung with bracket 4 in the inner hole for the rubber band 6 for extending into U-shaped 21 position of notch, form state as shown in fig. 13 that； Later, double-rod cylinder 44 above is opened driving first time strut 41 and is moved up the upper side stay rectangularity of rubber band 6, later, pendulum Cylinder 45 of taking offence release makes bracket 4 be reset to initial position, and then bottom side strut 42 further supports rubber band 6 grow downwards, and two two Side brace 43 struts the centre of rubber band 6 to two sides respectively, and annular rubber band 6 is made to strut into rectangular state as shown in figure 14, it Afterwards, conveying cylinder 31, which opens the mechanical folder 3 of driving and moves forward and extend into, ties up in mouth 4, the front end of machinery folder 3 by rubber band 6 from Landing is turned down in first time strut 41, bottom side strut 42 and two two side braces 43, the annular rubber band of landing is in screen resilience It is banded on polybag under effect, then conveys the release of cylinder 31 and reset, polybag 7 after having tied up is taken out from tying up in mouth 40 Out, mechanical folder 3 unclamps, and polybag 7 is fallen.So far, the work of tying up of embodiment two is completed.

Step 1: first time strut, bottom side strut, two side braces move forward after closing up to centre with bracket, from U-shaped notch In be inserted by the inner hole of the rubber band of the oriented and ordered output of vibration disk device, for the step, please refer to Fig. 5；Step 2: the Strut, which is opened, stretches the opening direction of the U-shaped notch of a lateral edge of rubber band, and the rubber band of annular is drawn into oblong, right Fig. 6, Fig. 7 are please referred in the step；Step 3: being narrowed by the rubber band that first time strut is drawn into oblong, in insertion fitness machine Disengaging vibration disk device is moved back from the position of U-shaped notch with bracket under the driving of structure, Fig. 8 is please referred to for the step；Step 4: Bottom side strut stretches the corresponding direction in the bottom side of rubber band to U-shaped notch, and the oblong of rubber band is further supportted to long, extension； Step 5: two side braces support rubber band between first time strut and bottom side strut to the corresponding direction in the two sides of U-shaped notch respectively It opens, support greatly；Fig. 9 is please referred to for above-mentioned two step of tying up；Step 6: the movement of carriage drive mechanism driving arm, it will be mechanical The polybag of folder clamping, which is extend into, to be tied up in mouth, and during polybag extend into and ties up mouth, and the front end of machinery folder will It is hung in first time strut, bottom side strut, the rubber band in two side braces and turns down landing, the rubber band of landing is under the action of screen resilience It binds on polybag.It is inserted by the inner hole of the rubber band of the oriented and ordered output of vibration disk device；For the step, please refer to Figure 10, Figure 11.

Claims (3)

1. a kind of polybag strapper, including rack, vibration disk device, polybag transmission device, it is characterised in that: in the vibration The discharge port position of Moving plate device is equipped with U-shaped notch, is additionally provided with rubber band device for spreading in the corresponding position of the U-shaped notch, The rubber band device for spreading includes bracket, is additionally provided on the bracket and ties up mouth, in the peripheral bracket position for tying up mouth It sets and is additionally provided with first time strut, bottom side strut, two side braces, struts cylinder, the first time strut is located at and U-shaped notch The corresponding position of opening direction, the bottom side strut is located at position corresponding with the bottom side of U-shaped notch, two side stays Bar is respectively provided at the corresponding position in two sides of U-shaped notch, the first time strut, bottom side strut, two side braces respectively with support Cylinder connection is opened, insertion movement mechanism is also connected between the bracket and the rack.

2. a kind of binding method of polybag, includes the following steps:

Step 1: first time strut, bottom side strut, two side braces move forward after closing up to centre with bracket, insert from U-shaped notch Enter in by the inner hole of the rubber band of the oriented and ordered output of vibration disk device；

Step 2: first time strut, which is opened, stretches the opening direction of the U-shaped notch of a lateral edge of rubber band, and the rubber band of annular is stretched At oblong；

Step 3: narrowed by the rubber band that first time strut is drawn into oblong, under the driving of carriage drive mechanism with bracket from The position of U-shaped notch moves back disengaging vibration disk device；

Step 4: bottom side strut stretches the corresponding direction in the bottom side of rubber band to U-shaped notch, and the oblong of rubber band is further Support is long, extends；

Step 5: two side braces are between first time strut and bottom side strut by rubber band respectively to the corresponding side in the two sides of U-shaped notch It is big to strutting, supportting；

Step 6: polybag extend into and ties up by relative motion between rubber band device for spreading and the mechanical folder of polybag conveying device In mouthful, and during polybag extend into and ties up mouth, it is hung in first time strut, bottom side strut, in two side braces Rubber band turns down landing, and the rubber band of landing is bound on polybag under the action of screen resilience.

3. a kind of polybag strapper according to claim 1, it is characterised in that: the insertion movement mechanism includes to lead Rail, sliding block, cylinder, the sliding block is rack-mount, and the guide rail is mounted in the rack, and the cylinder connects It connects between bracket and rack.