Utility model content
In view of the defect existing in prior art, the utility model aims to provide at least some open bag equipment and this bulk cargo bagging system of opening bag equipment is housed in a kind of can addressing the above problem.
For achieving the above object, according to an aspect of the present utility model, provide one to open a bag equipment, it comprises: bag storehouse; Determine the first detecting device of the position of sack in bag storehouse; Bag taking device, comprises mechanical arm and dress the first bag openning body thereon, for sack exposed side being clung in bag taking position and sack being brought to out to a bag position; Determine the second detection device whether bag taking device puts sack band in place; For open that bag position coordinates with the first bag openning body and the opposite side of being attached sack to open the second bag openning body of sack; Wherein the first bag openning body and the second bag openning body can relatively move opening bag position, thereby sack is opened.
, there is following advantage in bag equipment of opening of the present utility model: utilizes mechanical arm to drive the first bag openning body to move to be implemented to independently and glue bag taking in bag storehouse, be applicable to mass automatic production demand; Bag taking device the first detecting device is set, so that can be determined sack position rapidly and accurately; Also set up the opposite side of the second bag openning body with attachment sack at the opposite side of sack, prevented from like this opening sack in bag process and, towards lopsidedness, improved and opened bag efficiency and quality; Be provided for determining that the second detection device that whether sack band put in place of bag taking device guaranteed that the second bag openning body can accurately and timely coordinate with the first bag openning body and be attached to complete out quickly and accurately bag operation, open a bag efficiency thereby greatly provide; Be applicable to sack do not protrude contact pin common sack open bag process, the position of sack can be moved and is applicable in relatively large automation system.
Preferably, the position in bag storehouse is adjustable according to the testing result of the first detecting device, to sack is positioned to correct bag taking position exactly.
In a possibility, the second bag openning body is vacuum adsorption mechanism.
In another possibility, the first bag openning body and/or the second bag openning body are provided with one of hook in hook-and-loop fit structure or circle, and are provided with another of hook in hook-and-loop fit structure or circle in corresponding sack side.
In another possibility, the first bag openning body comprises the first bond; The second bag openning body comprises the second bond of the opposite side that clings sack, so that the opposite side of sack is clung, further prevent bag phenomenon and owing to being all stuck in the both sides of opening sack in bag process, thereby prevented sack towards the inclination of the first bag openning body and ensured sack both sides stress equalization.
In a specific embodiment, the first bond and the second bond are strap-like member, strap-like member have towards the positive of sack and with the back side of vis-a-vis, front has adhesive agent, the first bag openning body and the second bag openning body also comprise: the driving wheel of the used strap-like member of reeling; For the driver train that drives driving wheel to rotate; For the flower wheel of strap-like member is provided to driving wheel; And supporting member, the Bing Gei back side, the back side that is bearing in strap-like member acts on the power towards sack side, and wherein, the portion's section being bearing on this supporting member is formed as adhesive portion.Operation that the present embodiment is simple, has reduced the first bond and the second bond and has changed number of times, has ensured the continuity of operation, has improved work efficiency.
Preferably, the first bag openning body and the second bag openning body also comprise for detection of the 3rd detecting device of coiling amount of strap-like member of opening driving wheel in bag process at single, to guarantee to open the coiling amount that bag process uses certain at every turn, prevent from using and too much cause waste or use very few and cause that adhesive force is not enough produces bag.
In a specific embodiment, the 3rd detecting device comprises coder and coder axle, and coder axle is at wipe contact strap-like member between driving wheel and flower wheel and be configured to rotate under the rubbing effect at strap-like member.The number of turns that coder rotates by coder axle is determined the coiling amount of strap-like member.
Preferably, open bag equipment and also comprise the telescoping mechanism being connected with the second bag openning body, telescoping mechanism be formed at open at every turn bag start before from initial position to opening bag location push the second bag openning body to cling the opposite side of sack and to drive the second bag openning body to bounce back to open sack.
Preferably, sack is woven bag.
According on the other hand of the present utility model, a kind of bulk cargo bagging system is provided, comprise bag storehouse for stacking sack, be arranged on the charge mechanism at charging position place, sack is clamped in to the clamping device on this charge mechanism, mechanism, envelope body, transport establishment and the control system that the sack that installs bulk cargo is arranged, it is characterized in that, also comprise the above-mentioned bag equipment of opening for obtain and open sack from bag storehouse.
In a preferred version, bulk cargo bagging system also comprises for by the bag opening mechanism of opening sack that bag equipment opens and further strutting, the first couple that bag opening mechanism arranges before and after being included on transporting direction and second pair of support bag pawl, and at the lifting mechanism of opening vertical lifting support bag pawl between bag position and charging position, wherein first pair and second pair support bag pawl can relative motion on transporting direction, and support bag pawl in every pair of support bag pawl also can be movable relatively in the direction transverse to transporting direction.
A part for other features and advantages of the utility model will be that those skilled in the art are obvious after reading the application, and another part will be described by reference to the accompanying drawings in detailed description of the invention below.
Detailed description of the invention
Description, the exemplary scheme of the disclosed device of detailed description the utility model.Although it is in order to present embodiments more of the present utility model that accompanying drawing is provided, accompanying drawing needn't be drawn by the size of specific embodiments, and some feature can be exaggerated, remove or disclosure of the present utility model is cutd open to illustrate better and explain by office.The phrase " in the accompanying drawings " or the similar term that in specification sheets, occur needn't be with reference to institute's drawings attached or examples.
Be used to hereinafter describe some directional terminology of accompanying drawing, for example " on ", D score, " left side ", " right side ", " upwards ", " downwards " and other directional terminology, there is its normal implication by being understood to and make a comment or criticism related those directions while often seeing accompanying drawing.Except as otherwise indicating, directional terminology is substantially according to bulk cargo bagging system understood by one of ordinary skill in the art and open the direction in bag equipment described in this specification sheets.
Term " about " in the utility model, " approximately ", " substantially " and " almost " will be understood by those of ordinary skill in the art and will change within the specific limits according to the context of using this term.
As shown in Figures 2 and 3, the bulk cargo bagging system of the present embodiment comprises the bag storehouse 10 for stacking sack buttress, support 300, for obtaining and open sack 100 as bag equipment of opening of woven bag from bag storehouse 10, for opening sack 100 that bag equipment opens and strut and bring to the bag opening mechanism of charging position, be arranged on the charge mechanism 70 at charging position place, sack 100 is clamped in to the clamping device 180 on this charge mechanism 70, the mechanism that sack arranges, envelope body, for the sack 100 that installs bulk cargo being transported to upstream device as the mechanism of sack arrangement and transport establishment and the control system of envelope body.Wherein bag opening mechanism, charge mechanism 70, clamping device 180 and sack dressing mechanism can be arranged on support 300, and charge mechanism 70 can comprise charging door and be arranged on the cylindrical shell 71 of charging door below.Transport establishment can comprise be positioned at charge mechanism below and can vertically come and go the first mobile transportation as the first belt 91 and the downstream that is arranged on the first transportation with the second transportation of the sack that bulk cargo is housed 100 accepting the first transportation and transport as the second belt 92.
Shown in Fig. 2 and 3, wherein, open bag equipment and comprise bag storehouse 10, for determining that bag the first detecting device 80 of the position of storehouse 10 sacks 100 is (as sensor comprises infrared detection, camera, photoelectric switch etc.), for one side (exposed side) of sack 100 being clung and sack 100 is brought to out in bag taking position the bag taking device of bag position, whether sack 100 is with to the second detection device putting in place for determining bag taking device, for open that bag position coordinates with the first bag openning body 20 and the opposite side of being attached sack 100 to open the second bag openning body 40 of sack 100.Wherein, this bag taking device further comprises mechanical arm 30 and dress the first bag openning body 20 thereon, the first bag openning body 20 and the second bag openning body 40 can relatively move opening bag position, for example, in the first bag openning body 20 and the second bag openning body 40 one moves with respect to another and another is opening a bag position transfixion, or the first bag openning body 20 and the second bag openning body 40 move respectively relatively or contrarily, thereby sack 100 is opened.Should be appreciated that " clinging " described here and " attachment " refer to separably engages, instead of permanent engagement inseparably.
In conjunction with shown in Fig. 4 to Fig. 7, show respectively the first bag openning body 20 and the second bag openning body 40 in the present embodiment.Wherein, preferably the first bag openning body 20 in the present embodiment is identical with the structure of the second bag openning body 40, and the first bag openning body 20 comprises that the first bond 24, the second bag openning bodies 40 comprise the second bond 44 of the opposite side that clings sack 100.Preferably, the first bond 24 and the second bond 44 can be respectively strap-like member, strap-like member have towards the positive of sack 100 and with the back side of vis-a-vis, this front has adhesive agent, this strap-like member is for example adhesive tape.In addition, in order to prevent that opening bag changes adhesive tape at every turn, preferably, first bag openning body 20 of the present embodiment and the second bag openning body 40 can also comprise respectively the driving wheel 21 of the used adhesive tape of reeling, 41, for to driving wheel 21,41 provide the flower wheel 22 of adhesive tape, 42, supporting member 27,47 and for driving driving wheel 21,41 rotate driver trains 23,43, driver train for example can comprise actuator as the first servomotor and for by power transmission to driving wheel 21,41 transmission device, this transmission device for example can comprise synchronous pulley and synchronous cog belt.This supporting member 27,47 can be arranged at the outside of driving wheel 21,41 and flower wheel 22,42 and be bearing in the back side of strap-like member and act on the power towards sack side to the described back side, and wherein, the portion's section being bearing on this supporting member 21,41 is formed as adhesive portion.Preferably also can comprise that the both sides that lay respectively at supporting member 27,47 length directions are for the column 28 of adhesive tape process.Can also comprise the bearing 29,49 for supporting all constituents on above-mentioned the first bag openning body 20 or the second bag openning body 40.
In order to keep opening the length of the adhesive portion using in bag process at every turn, to prevent that length from differing, thereby cause waste because certain length is long, or affect bond effect because length is too short, preferably, the first bag openning body 20 in the present embodiment and the second bag openning body 40 also can comprise for detection of the 3rd detecting device of coiling amount of strap-like member of opening driving wheel 21,41 in bag process at single.For example, the 3rd detecting device comprises coder 25,45 and coder axle 26,46, coder axle 26,46 wipe contact strap-like member be configured to rotate under the rubbing effect at strap-like member between driving wheel 21,41 and flower wheel 22,42.
When operation, the first servomotor rotates and passes through synchronous pulley, Synchronous Belt Drives, to drive driving wheel 21,41 rotate and are wound around the adhesive tape of using, adhesive tape can pass through driving wheel heel post 28, coder 25 successively, 45 and coder axle 26,46, supporting member 27,47, flower wheel heel post 28 and then drive flower wheel 22,42 rotate, in this process, coder 25,45 is by coder axle 26,46 amount of spin acquisition pulse signals, and by calculating, controlling a twining amount is that single adhesive tape uses length.
Although there is shown the 3rd detecting device is by coder 25; 45 and coder axle 26; 46 form; but be to be understood that; can also use other detecting device known in the art; as sensor, infrared detection, camera, electronic eyes, photoelectric switch etc., this does not all depart from the scope of the utility model protection.
Although there is shown the first bond 24 and the second bond 44 is adhesive tapes; but be to be understood that; any other suitable material known in the art all can be used as the first bond 24 and the second bond 44 uses; as can be micro-curved nail (pin) array in outer end or and sack between known hook-and-loop fit structure is set; hooks as a large amount of in the arranged outside at sack 100; and the circle corresponding with hook on sack 100 be set on the first bond 24 and/or the second bond 44; vice versa, and this does not all exceed protection domain of the present utility model.
Passable, the second bag openning body 40 can be other suitable mechanism except bonding agency, for example, can be vacuum adsorption mechanism, clamping device etc.
In addition; position, shape and the state of the each several part in the first bag openning body 20 and second bag openning body 40 of the present embodiment can also be adjustable; for example; driving wheel 21; 41 with flower wheel 22,42 between diameter and/or height, the width of adhesive tape and/or position of viscosity, supporting member 27,47 and/or column etc. of distance, wheel all can change according to specific needs; to adapt to no sack and working environment, this does not depart from protection domain of the present utility model.In addition, although it is identical there is shown the structure of the first bag openning body 20 and the second bag openning body 40, but be to be understood that, the structure of the first bag openning body 20 and the second bag openning body 40 can be not identical, and the first bag openning body 20 can also adopt the Structural Tectonics different from said structure with the second bag openning body 40, as long as it has the adhesive portion that can cling sack 100.
Preferably, shown in Fig. 6 and 7, the opening bag equipment and also can comprise the telescoping mechanism 50 being connected with the second bag openning body 40 of the present embodiment.Before telescoping mechanism 50 can be formed at and open bag at every turn and start from initial position to described open bag location push the second bag openning body 40 with cling the opposite side of sack 100 and drive the second bag openning body 40 bounce back certain distance for example the distance of 160 millimeters to open described sack 100 and can continue to bounce back to its initial position after sack opened.Linear pattern guide rail 53 that such as telescoping mechanism 50 can comprise hack lever 51, extend perpendicular to hack lever 51, be slidably mounted on the slide block 52 on guide rail 53, the sliding drive mechanism (as the second servomotor 420, cylinder or HM Hydraulic Motor etc.) for driving slide block 52 to move, and driving by sliding the slip transmission device 410 that is passed to slide block 52, slip transmission device 410 can for example comprise synchronous pulley and synchronous cog belt.Wherein, slide block 52 is connected to the base 49 of the second bag openning body 40, to drive the second bag openning body 40 along guide rail 53 at initial position with open between bag position and move.Alternatively, this telescoping mechanism 50 is arranged in a side contrary with the first bag openning body 20 of support 300.
Shown in Fig. 8, show the bag storehouse 10 in the present embodiment, it can comprise base 11, framework 15, be arranged on the holder bag part 14 and the level(l)ing mechanism that supports and can be used for the level attitude of holder for regulating bag part 14 on framework 15 tops, this level(l)ing mechanism drives holder bag part 14 or also has the translational drive mechanism of framework 15 parallel motions as the 3rd servomotor 16 as can be comprised, cylinder or HM Hydraulic Motor etc., also can comprise reductor and sprocket wheel chain, screw rod etc., thereby and drive the parallel motion of bolt rotary implementation framework 15 by transmission, the bag taking position of guaranteeing mechanical arm 30 is unique accurately.
Bag storehouse 10 can also comprise the vertical adjustment mechanism of the vertical position of holder for regulating bag part 14, this vertical adjustment mechanism for example can comprise horizontally disposed electric pushrod 12, at least two pairs of poles 13, with the slide rail being arranged on framework 15 bottom surfaces, the middle part of every pair of pole 13 is hinged, the upper end of pole 13 and the bottom-hinged of holding in the palm bag part 14 separately, the lower end of at least one in every pair of pole 13 can be hinged in this slide rail slidably along slide rail, electric pushrod 12 drives at least one pole 13 in every pair of pole 13 to slide and drive vertically coming and going of holder bag part 14 mobile along slide rail, thereby lift sack 100 and rise to setting height, ensure that bag hides upper surface maintains in certain high scope all the time, guarantee the crawl that mechanical arm 30 can be stable.Or passable is, one of them pole 13 in every pair of pole 13 is hinged on slide rail, and the lower end of another pole 13 is hinged on the articulation piece being fixedly installed on framework 15, so that make in every pair of pole 13 only can be along slide rail horizontal translation, just as shown in Figure 8 by a pole 13.The bag storehouse 10 of the present embodiment, by vertical and horizontal motion, facilitates the crawl of mechanical arm 30, for example can disposable pack into sack as 500 after, can, in a very large workflow, need not add sack.The mobility in bag storehouse 10, has ensured that mechanical arm 30 glues the position stability of bag taking, unique.
Shown in Fig. 9, show bag opening mechanism, this bag opening mechanism can comprise along the first couple who arranges before and after on transporting direction and the second pair of support bag pawl 111 and at the lifting mechanism of opening vertical lifting support bag pawl 111 between bag position and charging position.The two pairs of support bag pawls 111 are configured to first pair and the second pair of support bag pawl 111 can relative motion on transporting direction, and support bag pawl in every pair of support bag pawl 111 also can be movable relatively in the direction transverse to transporting direction.。
This lifting mechanism can comprise guide pillar 160, can vertically come and go the mobile body 110 that is set in movably on guide pillar 160 along this guide pillar 160, control mobile body 110 along the vertical mobile driver element of guide pillar 160, this driver element for example comprises the 4th servomotor 170 and for the transmission device to mobile body 110 by transmission of power, this transmission device for example comprises synchronous pulley and synchronous cog belt.
Preferably, bag opening mechanism also can comprise two pawl strut members 112 for supporting every pair of support bag pawl 111, also can comprise for driving longitudinal driving mechanism that this two couples support bag pawl 111 moves back and forth along transporting direction (being the length direction of the mobile body 110 of Fig. 9) and the transversal driving mechanism for driving each edge of this every pair support bag pawl 111 to move back and forth transverse to reverse (being the Width of mobile body 110 in Fig. 9) of transporting direction.Wherein, longitudinal driving mechanism can comprise that longitudinal actuator is as the first cylinder 140, motor or HM Hydraulic Motor etc., longitudinal driving mechanism also can comprise along the length direction (longitudinally) of mobile body 110 and is arranged on two chutes 130 on mobile body 110, two pawl strut members 112 move to drive two pairs of support bag pawls 111 to move relatively or contrarily along the length direction that is parallel to mobile body 110 with chute 130 separately at right angles and especially its end along chute 130 separately respectively, mutually near or mutually deviate from.
Transversal driving mechanism can comprise horizontal actuator 150 as the second cylinders 150 between two support bag pawls that are connected in every pair of support bag pawl 111, with drive at least one in two support bag pawls 111 with respect to another along moving transverse to the direction of transporting direction.Second cylinder 150 in left side is not shown in Fig. 9, wherein to transport front, and longitudinal cylinder 130 corresponding to left side support bag pawl is also not shown.
Although every pair of support bag pawl 111 is all equipped with a longitudinal driving mechanism in the present embodiment; but be to be understood that also and can only on a pair of support bag pawl, be equipped with longitudinal driving mechanism therein; with make wherein a pair of support bag pawl 111 with respect to another to movement; and another is to longitudinally upper irremovable, this does not exceed protection domain of the present utility model.
Shown in Figure 10-12, show the mechanism arranging for sack in the present embodiment, the mechanism that this sack arranges is positioned at the downstream of charge mechanism 70, and it is flat-shaped for charged circular sack is become, and makes sack 100 can enter envelope body.The mechanism that this sack arranges can comprise that can to stretch into sack inner and be flat-shaped interior support mechanism by sack inner support and lead in sack 100 outsides that this becomes the guiding mechanism that flat-shaped sack moves through.Wherein interior support mechanism can comprise front and back two opposed claws 190, this two claw 190 is configured to, when transport establishment, sack 100 is delivered to sack dressing mechanism lower time, these front and back two claws 190 start to do circular motion from initial position as shown in figure 10, on one side downwards, on one side to two lateral movements to reach state as shown in figure 11 to strut the sack of sack 100, make sack become flat-shaped and be retracted into subsequently the initial position as shown in Figure 10 and 12.Guiding mechanism can comprise two opposed jaws 60, this two opposed jaw 60 is formed at two claws 190 to be started to move downward sack both sides from initial position as shown in figure 11 when returning and stops (as shown in figure 12), wherein, 60 of two jaws leave gap with ensure sack 100 can by and keep present shape.
The operating process of the bulk cargo bagging system of the present embodiment is as follows:
First, referring again to Fig. 2 and 3, each axle of the mechanical arm 30 of bag taking device and end and the first bag openning body 20 are all in initial condition, after the last time, charging finished, control system control the first bag openning body 20 is adjusted attitude under the drive of mechanical arm 30, arrive bag 10 tops, storehouse (as shown in figure 13), control system reads and determines the location information of sack 100 in bag storehouse 10 by the first detecting device 80 simultaneously, and utilize the position of sack 100 in level(l)ing mechanism and vertical adjustment institutional adjustment bag storehouse 10, make sack 100 in correct bag taking position.Now, the first bag openning body 20 clings sack 100 (as shown in figure 13) vertically, and afterwards, mechanical arm 30 runnings are to waiting for that opening bag station opens a bag position (as shown in figure 14).
Second detection device reads and determines whether bag taking device puts sack 100 bands after band puts in place, send the signal that puts in place in place, control system is received and is put in place after signal, controlling telescoping mechanism 50 pushes to out bag position by the second bag openning body 40 and extremely docks to cling with the first bag openning body 20 of the second bag openning body 40 symmetries with rotation, compacting also fits tightly (as shown in figure 15) with the opposite side of sack 100, now telescoping mechanism 50 drives the second bag openning body 40 to retreat to drive the first bag openning body 20 to retreat as 160 millimeters so that the two relatively moves and opens sack 100 (as shown in figure 16) as 160 millimeters and/or mechanical arm 30.
After the sack of sack 100 is opened, first, the lifting mechanism of bag opening mechanism drives mobile body 110 to be moved downward to out a bag position, particularly, control system control the 4th servomotor 170 starts and drives mobile body 110 to drop to out a bag position by synchronous pulley, synchronous cog belt, then, the first cylinder 140, the second cylinder 150 move respectively, drive four support bags to grab 111 and outwards move the sack of sack 100 is strutted as essentially rectangular (as shown in figure 17); After sack struts, the first bag openning body 20 and the second bag openning body 40 continue to retreat, until depart from sack 100.Finally, control system control the 4th servomotor 170 starts and drives mobile body 110 to promote by synchronous pulley, synchronous cog belt, the sack 100 promoting surrounds the cylindrical shell 71 of charge mechanism 70 and arrives behind desired location as shown in figure 18, send the signal that puts in place, control system receives that controlling peripheral clamping device 180 after this signal that puts in place is clamped in the sack packaging 100 on cylindrical shell 71, and the second cylinder 150 resets and drives support bag to grab 111 longitudinally to retract and be upwards promoted to and arrive sack outside (as shown in figure 19) afterwards.Now, bagging has moved.
After bagging completes, charge mechanism 70 starts charging, simultaneously the first belt 91 rise and the bottom that contacts sack 100 to support sack 100 (as shown in figure 19), and then prevent that charging process from impacting sack 100 to cause the destruction to sack 100.After blanking completes, the first belt 91 drops to initial position with the substantially contour position (as shown in figure 20) of the second belt 91 and start operation sack 100 is transported to arrangement station (the mechanism position arranging for sack) as shown in figure 21.Now, the mechanism that control system control arranges for sack starts, and before and after utilizing it, claw 190 does circular motion, on one side downwards, strut sack to both sides on one side, make sack become flat-shaped (as shown in figure 22), and and then two opposed jaws 60 move downward sack both sides and stop (as shown in figure 23), in this process, two 60 of jaws leave gap with ensure sack 100 can by and keep present shape, afterwards, as shown in figure 24, the mechanism that sack arranges returns back to initial condition, and continuing to be transported to envelope body by sack 100, the second belt 92 carries out that envelope processing is labelled etc.
There is following advantage in the utility model: utilizes mechanical arm 30 to drive the first bag openning body 20 to move to be implemented to independently and glue bag taking 100 in bag storehouse 10, be applicable to Quantity production demand; By bag taking device, the exposed side of sack 100 is clung, thereby can not drop holding sack 100 in bag process; Bag taking device the first detecting device 80 is set, so that can be determined the position of sack 100 rapidly and accurately; Also set up the opposite side of the second bag openning body 40 with attachment sack 100 at the opposite side of sack 100, prevented from like this opening sack 100 in bag process and, towards lopsidedness, improved and opened bag efficiency and quality; Be provided for determining whether bag taking device is with the second detection device putting in place to guarantee that the second bag openning body 40 can accurately and timely coordinate attachment to complete out quickly and accurately bag operation with the first bag openning body 20, open a bag efficiency thereby greatly provide in sack 100; Be applicable to sack do not protrude contact pin common sack open bag process.The utility model is simple in structure, action accurately, full automation operation, what can be widely used in powdery, granular, bulk product opens bag, pack, encapsulation, sack Applicable scope is large, bearing capacity is large.
Bulk cargo bagging system of the present utility model and open bag equipment and can be widely applied to various sacks, for example woven bag, non-woven bag, plastic bag etc., and especially second-rate, and the poor sack aspect of sack compactness can prevent out coming off of sack in bag process more effectively, practicality is large, and productive costs is low.
The utility model also provides one to open a bag method, comprises the following steps:
In step 1, definite bag storehouse, whether sack is in correct bag taking position;
Step 2, startup bag taking device, make the first bag openning body arrive bag taking position the exposed side of sack is clung and sack is brought to out to a bag position;
Step 3, determine whether bag taking device correctly takes out sack to a bag position;
Step 4, start the second bag openning body and opening bag position and the first bag openning body and coordinate and be attached the opposite side of sack;
Step 5, the first bag openning body and the second bag openning body relatively move opening a bag position, thereby sack is opened.
Preferably, step 2 further comprises: when sack in bag storehouse is adjusted the step in bag storehouse during in off-square bag taking position.
Preferably, step 4 further comprises: the second bag openning body is being opened bag position and the first bag openning body and coordinate and cling the opposite side of sack.
More than describe preferred embodiment of the present utility model, and between feature in these embodiment, can exchange, substitute or combination.
Be to be understood that, although this specification sheets is described according to each embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should make specification sheets as a whole, technical scheme in each embodiment also can, through appropriately combined, form other embodiment it will be appreciated by those skilled in the art that.
The foregoing is only the schematic detailed description of the invention of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations, amendment and the combination under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.