CN204507412U - Coiled strip feedway - Google Patents

Abstract

The utility model discloses a kind of coiled strip feedway, comprise volume film roller, tolerant roller and tolerant brake equipment, described tolerant brake equipment comprises V-arrangement link span and adjusting connector, described V-arrangement link span has the first pin jointed end, the second pin jointed end and to establishing end, described V-arrangement link span is in the top of described volume film roller and tolerant roller, described first pin jointed end is articulated with on the turning cylinder of described tolerant roller, the other end of described adjusting connector is fixed on described V-arrangement link span, makes holding to being located on described volume film roller to establishing of described V-arrangement link span.The utility model furthermore achieved that tolerant and braking is integrated, and more effectively can realize the lasting appropriate tensioning of packing film distraction procedure by failure-free.When haulage speed is accelerated, tractive force strengthens, and makes tolerant roller tolerant downwards, and drive holding away from volume film roller to establishing of V-arrangement link span, braking force reduces, and makes film roll accelerate to rotate, tension force reduction; Otherwise braking force strengthens.

Description

Coiled strip feedway

Technical field

The utility model relates to the technical field of packaging Mechanical Design, particularly relates to a kind of coiled strip feedway.

Background technology

Worldwide, the development history of packaging industry is shorter, and the European and American countries that science and technology is flourishing starts to walk in 20 beginnings of the century substantially, and the fifties, paces were just greatly accelerated.

Before terminating to World War II from 20 beginnings of the century, achieve the mechanization of package handling at industrial sectors such as medicine, food, cigarette, match, daily-use chemical industries, adopt pure machine control techniques; The fifties, the control system that it is main element that wrapping machine extensively adopts with ordinary electronic switch and electron tube, namely relay controls to add mechanical adjustment techniques, achieves elementary automation; The sixties, adopt dynamo-electric light liquid gas complex art showed increased in wrapping machine, machine expands further, has occurred special automatic packaging line on this basis; The seventies, microelectronic technique is introduced automatic packaging machine and baling line, achieve the package production controlled by automatic computer; From 80 to the beginning of the nineties, in some packaging field, microcomputer, robot are more applied in feed, detection, management etc., prepare to the automatic packing shop of flexible automatic packaging line and " unmanned " excessive.

The average water product of above-described just Development of Packaging Industry.But specific to certain class machine, then have nothing in common with each other.For automatic form-fill-seal packaging machine, seen type on market at home at present, mainly adopts relay control technology or dynamo-electric light liquid gas complex art, relative package packing machine overall development level, still a little backwardness, is unable to catch up with the paces in epoch.The general trend of food packaging industry development is exactly realize the automation of packaging for foodstuff, intellectuality and last realize " unmanned " to pack.

At present, the country that external packaging and food machinery level is high mainly contains the U.S., Germany, Japan, Italy and Britain.And recent years, these national packaging and food machinery equipment developments present the trend made new advances, and its technology will develop towards four direction: one is mechanical function diversification.Industry and commerce product has tended to sophistication and diversification, under overall situation variation situation, diversification, elastification and there is the packaging machine of multiple handoff functionality can meeting the market requirement.Two is structural design criteria, modularity.Make full use of original type and carry out modularity design, new architecture can be changed at short notice.Three is intelligent controls.Current package packing machine producer generally uses PLC dynamicload controller, although PLC elasticity is very large, does not have the power that computer (containing software) has yet.Four is structure high precision ints.Structure design and structure motion control etc. are concerning the quality of package packing machine performance, control (PLC) contour micromanipulator come by motor, coder and digital control (NC), dynamicload, and moderately do product extension, the packaging facilities direction towards high-tech industry is researched and developed.

The Development of Packaging Industry of the U.S. is comparatively early, covering extensive fields, and basis is sturdy, and level is very high.Only with regard to package packing machine manufacture, well matched in strength rich, its kind and the gross output value all occupy first place in the world.The U.S. has many industrial enterprises and military service to set up packaging research institution, makes full use of experimental means and to throw oneself into the development & application of new product, up-to-date technology.Such as, metering computer grading machine is widespread use on a production line, and it can be rejected by the product inaccurate to device metering, can reject, can reject the bottled commodity of not adding a cover, also can control filling metering to the product of unlabelled.Promoting the use of of metering computer grading machine, makes the quality control of commodity achieve mechanization, scientific, automation.

The packaging industry of Japan is from just growing up gradually after World War II.Because being good at introduction, imitating, innovating, managing, only just establish preliminary basis with more than ten years.Nowadays, Japan has established independently packaging industry system, and its total package industrial output is about the half of the U.S. and leaps to second place of the world.Japan has a collection of small package packing machine originating firm, and lay particular emphasis on middle-size and small-size, the semi-automatic wrapping machine of exploitation and corollary equipment, its technology has entered the international rank of advanced units.

The Packaging Machinery Industry of Germany is very flourishing, in the design of package packing machine, manufacture and technical performance etc., occupy leading position.The Germany at present canned speed of beverage can reach 1200 bottles/hour, cigarette pack 12000/minute, integrate bag, weigh, filling, vacuumize, the operation such as sealing in the world the tea packaging motor speed of high speed reach 350 bags/minute.

Chinese packaging machinery is started late, through the development of more than 20 years, Chinese packaging machinery has become one of ten large industries in mechanical industry, for China packaging industry fast development provides sound assurance, some package packing machine has filled up domestic blank, substantially can meet the demand of home market, portioned product also has outlet.But at present, Chinese packaging machinery export amount also the not enough gross output value 5%, import volume is but on the whole suitable with the gross output value, greatly differs from each other with developed country.Because food packing machine manufacturing formation time only has 20 years, most of packaging for foodstuff scope of the enterprise is less than normal, and therefore industry concentration ratio is not high, and its Problems existing is mainly manifested in: development costs is few, lack qualified technical personnel; Low-level repetition is too many, and the type that most enterprises is produced still adopts relay control technology and mechanical adjustment techniques, and the device structure produced is complicated, and degree of automation is low, and capacity rating is not high, and the feature of environmental protection is poor.Thus cause the significant wastage to resource, cause the confusion in package packing machine market, hinder the development of industry.

At present, food packing machine competition, following food packing machine, by the automation of cooperation industry, promotes that packaging facilities aggregate level improves, develops multi-functional, high efficiency, low consumed food packing device.Therefore, for accelerating Packaging Machinery in Our Country industrial expansion, to set about from following several respects.

One, realize food packing machine electromechanical integration.Current food packing machine be integrate mechanical, electrical, the mechanical electronic equipment of gas, light, magnetic, when designing, should put forth effort on and improve the degree of automation of package packing machine, the research and development of package packing machine being combined with computing machine, realizing Mechatronics control.The essence of electromechanical integration is exactly from systematic point of view, uses Process Control Principle, machinery, electronics and the relevant technologies such as information, detection is carried out organic assembling, realizes global optimization.

Two, employ new technology, set up automation, variation, multifunctional integrated package packing machine new system.Its technology trends of food packing machine is mainly reflected in high productivity, automation, multi-functional, the multi-functional composition manufacturing line of unit, employ new technology on.

Three, adapt to world market requirement, development and Design green package machinery.Post-WTO, International Packaging machinery industry is increasingly competitive, external Green Trade Barrier proposes higher requirement to Situations of Food Packaging Machinery industry, so, traditional packaging Mechanical Design and development mode must be changed, consider at design phase and make that package packing machine (design, processing and manufacturing, assembling, use, maintenance are until discarded post-processing disposal process) in its Life cycle minimizes without impact or impact environment, Resource low dissipation, to be easy to " green characteristic " such as reclaiming, to promote the core competitiveness of Packaging Machinery in Our Country.

The present inventor, by as above understanding the gap of domestic and international packaging facilities, thinks that the technology of Packaging Machinery in Our Country needs to be improved further.Especially, in coiled strip feedway, there is following defect in various degree in existing coiled strip feedway: complex structure, reliability is poor, cannot carry out the adjustment of actv. elasticity.

Therefore, the present inventor is devoted to develop a kind of new coiled strip feedway, overcomes the defect that existing coiled strip feedway exists, and realizes automatically carrying out elasticity adjustment fast and effectively.

Summary of the invention

The purpose of this utility model, proposes a kind of new coiled strip feedway exactly, overcomes the defect that existing coiled strip feedway exists, and realizes automatically carrying out elasticity adjustment fast and effectively.

The utility model is for solving the problems of the technologies described above, provide a kind of coiled strip feedway, comprise volume film roller, tolerant roller and tolerant brake equipment, described tolerant brake equipment comprises V-arrangement link span and adjusting connector, described V-arrangement link span has one for first pin jointed end hinged with described tolerant roller turning cylinder, one for be articulated with the second pin jointed end on external rack and one for be located on described volume film roller to establishing end, described V-arrangement link span is in the top of described volume film roller and tolerant roller, described second pin jointed end is articulated with on external rack, described first pin jointed end is articulated with on the turning cylinder of described tolerant roller, one end of described adjusting connector is fixed on external rack, the other end of described adjusting connector is fixed on described V-arrangement link span, make holding to being located on described volume film roller to establishing of described V-arrangement link span.

Preferably, described adjusting connector is extension spring.

Preferably, the described termination to establishing end is also provided with the rubber block of an increase contact friction force, described to establishing end to be connected on described volume film roller by described rubber block.

Preferably, the bearing surface of described rubber block is the cambered surface equal with described volume film roller periphery sinuousness.

In sum, coiled strip feedway of the present utility model, furthermore achieved that tolerant and braking is integrated, not only as traditional approach by add tolerant roller overcome packing film course of conveying in, because of a variety of causes, cause haulage speed transient change, thus the phenomenon of pine time tight when occurring when causing packing film to draw, also create out new tolerant brake equipment further, when haulage speed is accelerated, tractive force strengthens, make tolerant roller tolerant downwards, drive V-arrangement link span to establishing end away from volume film roller, braking force reduces, film roll is made to accelerate to rotate, tension force reduces, otherwise braking force strengthens.More effectively can realize the lasting appropriate tensioning of packing film distraction procedure by failure-free.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:

Fig. 1 is the functional block diagram of specific embodiment granule material package machine.

Fig. 2 is the perspective view of specific embodiment granule material package machine.

Fig. 3 is the cross-sectional structure schematic diagram of the horizontal sealing cutoff device of specific embodiment.

Fig. 4 is the control system schematic diagram of specific embodiment.

Fig. 5 is the structural representation of the feeding device of specific embodiment.

Fig. 6 is the structural representation of the coiled strip feedway of specific embodiment.

Fig. 7 is the longitudinal sealing overlap joint bag product structure schematic diagram of pincushion.

Fig. 8 is the packaging process flow figure of specific embodiment granule material package machine.

Drawing reference numeral illustrates:

Control system 100, opto-electronic pickup 110, first temperature sensor 120, second temperature sensor 130, central controller 140, coiled strip feedway 200, volume film roller 210, tolerant roller 220, tolerant brake equipment 230, V-arrangement link span 231, adjusting connector 232, first pin jointed end 233, second pin jointed end 234, to establishing end 235, feeding device 300, inlet 310, feed bin 320, scraper plate 330, charging tray 340, measuring cup 350, base plate 351, upper bush 352, lower sleeve 353, link gear 360, first connecting rod 361, Flexible Connector 362, second connecting rod 363, concavo-convex dish 364, depressed area 365, height arm control 366, S. A. 370, bag former 400, closing device 500, longitudinal sealing draw gear 510, first roller 511, second roller 512, horizontal sealing cutoff device 520, first roll body 521, 3rd heating member 522, second roll body 523, 4th heating member 524, cutting knife 525, centre of gration P, packing film 600.

Detailed description of the invention

As shown in Figure 1, present embodiment discloses a kind of granule material package machine, comprise: Vertical Rack (not shown), control system 100, for exporting the coiled strip feedway 200 of packing film, for exporting the feeding device 300 of granule materials, for packing film being guided shaping bag former 400, and for carrying out the closing device 500 of hot-press sealed to shaping packing film.

Shown in composition graphs 2, the coiled strip feedway 200 of the present embodiment is arranged on the top of described Vertical Rack, bag former 400 is arranged on the middle part of described Vertical Rack, closing device 500 is arranged on the bottom of described Vertical Rack, the inlet 310 of feeding device 300 is arranged on the middle and lower part of described Vertical Rack, exported by coiled strip feedway 200 that to carry out guiding in packing film 600 to bag former 400 shaping, carry out sealing by closing device 500 more shaping, by feeding device 500, granule materials is imported in packing film 600 in the capping processes of closing device 500.

Concrete, the closing device 500 of the present embodiment comprises: for carrying out packing film drawing and the longitudinal sealing draw gear 510 of longitudinally heat-sealing, and seal and the horizontal sealing cutoff device 520 cut off for carrying out transversely end opening to packing film.As shown in Figure 2, longitudinal sealing draw gear 510 is arranged on above horizontal sealing cutoff device 520.

The longitudinal sealing draw gear 510 of the present embodiment comprises the first roller 511, for the first driving machine (not shown) driving described first roller to rotate, for giving the first heating member (not shown) of described first roller heating, second roller 512, the second driving machine (not shown) of rotating for driving described second roller and the second heating member (not shown) for heating to described second roller, as shown in Figure 2, first roller 511 and the second roller 512 are arranged side by side, and make constant speed and turn round in opposite directions, packing film 600 liang of longitudinal edges complete longitudinal sealing and downward drawing-in motion via the gap between the first roller 511 and the second roller 512.

The horizontal sealing cutoff device 520 of the present embodiment comprises the first roll body 521, for the 3rd driving machine (not shown) driving described first roll body to rotate, for giving the 3rd heating member 522 of described first roll body heating, second roll body 523, for the 4 wheel driven motivation (not shown) driving described second roll body to rotate, the 4th heating member 524 heated for giving the second roll body 523 and the cutting knife 525 for cutting off packing film, the outer peripheral face of the first roll body 521 and the equal projection of outer peripheral face of the second roll body 523 are provided with at least one cutting knife 525, first roll body 521 and the second roll body 523 are arranged side by side, and make constant speed and turn round in opposite directions, interval roll extrusion carries out involution through the suitable for reading of packing film 600 or end opening, the cutting knife of the first roll body 521 and the cutting knife intermittently tangent disconnection packing film 600 at involution place of the second roll body 523 simultaneously.

Exemplary, first roll body 521 of the present embodiment and the cross-sectional plane of the second roll body 523 are the relatively long side with two arc-shaped edges as shown in Figure 3, described in two, arc-shaped edges opposition is arranged, equal apart from the distance of its centre of gration P, and be apart from itself centre of gration one side farthest, described in each, the midway location of arc-shaped edges offers the slot (not marking in figure) for plugging cutting knife 525, a cutting knife 525 is plugged in slot described in each, fixed by screw, the protruding arc-shaped edges of knife edge part (namely protruding roll body outer peripheral face) of cutting knife 525.In the present embodiment, first roll body 521 is identical with the structure of the second roll body 523, and other limits of its cross-sectional plane are straight flange (corresponding all sides are plane), and the opposition straight flange on same roll body is parallel to each other, and on each straight flange, each point is all less than the distance of arc-shaped edges to its centre of gration P apart from the distance of its centre of gration P.First roll body 521 and the second roll body 523 turn round in opposite directions, gap width intermittence change between the two, cutting knife 525 when going to state shown in Fig. 3 on the first roll body 521 and the second roll body 523 is tangent, gap is minimum, and the packing film entered in gap is carried out Heat Sealing by the arc-shaped edges on tangent front and back first roll body 521 and the second roll body 523.

Of course, in other detailed description of the invention, the cross-sectional plane of described first roll body and/or described second roll body can also be that other are at least while the convex polygon of arc-shaped edges for outwardly convex, and the arc-shaped edges of described convex polygon is positioned at apart from itself centre of gration side farthest, and arc-shaped edges projection is provided with cutting knife described in described in each.Described first roll body and described second roll body can also be identical cylindrical rollers, and described first roll body and described second roll body are arranged off-centre.The cross-sectional plane of described first roll body and described second roll body also can be set to ellipse etc., repeats no more herein.

As shown in Figure 4, the control system 100 of the present embodiment comprises: for detecting the opto-electronic pickup 110 of the pictorial trademark information on packing film, for detecting the first temperature sensor 120 of the temperature information of longitudinal sealing draw gear, for detecting the second temperature sensor 130 of the temperature information of horizontal sealing cutoff device, and central controller 140.Central controller 140 obtains relevant information by opto-electronic pickup 110, first temperature sensor 120 and the second temperature sensor 130, and the first driving machine, the second driving machine, the 3rd driving machine, 4 wheel driven motivation and feeding device described in difference control linkage.

Exemplary, central controller 140 can select PLC, first driving machine, the second driving machine, the 3rd driving machine and 4 wheel driven motivation select corresponding motor as required, temperature booster can adopt heater strip or heating pipe etc. as required, bag former 400 can select U-shaped former (also can select trunk former etc. according to demand), opto-electronic pickup, the first temperature sensor and the second temperature sensor select market outsourcing piece as required, repeat no more herein.

As shown in Figure 5, the feeding device 300 of the present embodiment comprises feed bin 320, scraper plate 330, charging tray 340, measuring cup 350, link gear 360, S. A. 370 and inlet 310, feed bin 320 is arranged on above charging tray 340, scraper plate 330 is placed in charging tray 340, the bottom surface of charging tray 340 offers some outlets, measuring cup 350 is docked in described outlet, accept by the granule materials dropped in described outlet, S. A. 370 connects charging tray 340, drive charging tray 340 to rotate relative to scraper plate 330, the granule materials that described outlet end face has more scrapes off by scraper plate 330.Exemplary, four outlets evenly can be set, then corresponding four measuring cups are set, scraper plate can be fixed on Vertical Rack, on scraper plate, a drive motor can also be added again separately, make it can realize autorotation in charging tray, then control the relative rotation speed of itself and charging tray more flexibly.

Concrete, the link gear 360 of the present embodiment comprises first connecting rod 361, Flexible Connector 362, second connecting rod 363 and concavo-convex dish 364, the upper end thereof of first connecting rod 361 is on charging tray 340, the lower end of first connecting rod 361 is cemented on the middle part of second connecting rod 363, Flexible Connector 362 one end is connected to the middle part of first connecting rod 361, the other end of Flexible Connector 362 stretches and is connected on S. A. 370, the upper end of second connecting rod 363 is cemented on the base plate 351 of measuring cup 350, the base plate 351 of measuring cup 350 is separating bottom plate, by means of only second connecting rod 363 to support to arrive in be located at measuring cup 350 bottom surface on, concavo-convex dish 364 level is fixedly installed on below second connecting rod 363, the lower end of second connecting rod 363 is to the upper surface being located at concavo-convex dish 364, first connecting rod 361, Flexible Connector 362 and second connecting rod 363 followed by S. A. 370 and rotate, concavo-convex dish 364 maintains static, and be formed with a depressed area 365 in the upper surface of concavo-convex dish 364.

Under normal condition, as shown in Fig. 5 left-hand component view, the lower end of second connecting rod 363 is vertically on the plane area of upper surface being located at concavo-convex dish 364, constant to the height established, the base plate 351 of measuring cup 350 is on the bottom surface being located at measuring cup 350, and the granule materials in measuring cup 350 can not drop.

Under discharging state, as shown in Fig. 5 right-hand component view, the lower end of second connecting rod 363 moves in depressed area 365, decline to the height established, under the pulling force effect of first connecting rod 361 and Flexible Connector 362, drive base plate 351 in outward-dipping shape, the granule materials in measuring cup is discharged in inlet 310 via base plate 351.

Concrete, the link gear 360 of the present embodiment also comprises one for adjusting the height arm control 366 of concavo-convex dish 364 rational height, measuring cup 350 is by upper bush 352, lower sleeve 353 and base plate 351 form, as shown in Figure 5, the outward flange outwardly convex of the lower port of upper bush 352 forms lower flange (not shown), the upper port inward flange inwardly protruding of lower sleeve 353 is formed with upper flange (not shown), the upper port of upper bush 352 is docked in described outlet, lower sleeve 353 is set in the lower port of upper bush 352, described lower flange and described upper flange form gear and establish for preventing lower sleeve 353 from deviating from from upper bush 352.Exemplary, height arm control 366 wherein can select handwheel regulating mechanism as shown in Figure 5.

As shown in Figure 6, the coiled strip feedway 200 of the present embodiment comprises volume film roller 210, tolerant roller 220 and tolerant brake equipment 230, packing film 600 rolls on volume film roller 210, and export on bag former 400 via tolerant roller 220, what tolerant roller 220 can fluctuate or swing is arranged in three-dimensional frame (i.e. external rack), tolerant brake equipment 230 comprises V-arrangement link span 231 and adjusting connector 232, V-arrangement link span 231 has one for first pin jointed end 233 hinged with tolerant roller 220 turning cylinder, one for be articulated with the second pin jointed end 234 in described three-dimensional frame and one for be located on described volume film roller to establishing end 235, V-arrangement link span 231 is in the top of volume film roller 210 and tolerant roller 220, second pin jointed end 234 is articulated with in described three-dimensional frame, first pin jointed end 233 is articulated with on the turning cylinder of tolerant roller 220, as shown in Figure 6, one end of adjusting connector 232 is fixed in described three-dimensional frame, the other end of adjusting connector 232 is fixed on V-arrangement link span 231, make V-arrangement link span 231 to establishing end 235 to being located on volume film roller 210.So, namely by the action of tolerant roller 220, drive the rotational resistance of V-arrangement link span 231 to volume film roller 210 to do further corresponding adjustment, make the packing film of output obtain suitable elasticity.

Exemplary, the adjusting connector 232 of the present embodiment is the extension spring arranged as shown in Figure 6, the described termination to establishing end is also provided with the rubber block (not marking in figure) of an increase contact friction force, described to establishing end to be connected on described volume film roller by described rubber block, and be the cambered surface (in figure do not mark) equal with described volume film roller periphery sinuousness by the bearing surface of described rubber block.

Of course, in other detailed description of the invention, coiled strip feedway of the present utility model also may add several other deflector rolls as required.

Exemplary, the granule material package machine of the present embodiment is applied in the packaging of confectionary pellets, its technological process as shown in Figure 8, confectionary pellets constant volume packaging can be overlapped bag product at the longitudinal sealing formed as shown in Figure 7 by the granule material package machine of the present embodiment, its concrete packaging process is as follows:

1, by adding in feeding device 300 by particle by feed bin accordingly, corresponding packing film coiled strip is assembled on coiled strip feedway 200, and other relevant connections of machine are arranged.

2, start longitudinal sealing draw gear 510, under the draw of longitudinal sealing draw gear 510, it is shaping one by one to bag former 400 that coiled strip feedway 200 exports packing film, and enter longitudinal sealing draw gear 510 and carry out longitudinal heat-sealing.

3, start feeding device 300, S. A. 370 drives charging tray 340 to rotate, and the confectionary pellets in feed bin 320 constantly enters in charging tray 340, and when filling up each measuring cup 350, measuring cup 350 end face strikes off by scraper plate 330, clears away unnecessary candy, realizes precise volume setting metering; As shown in Figure 6, when the lower end of second connecting rod 363 moves in depressed area 365, the base plate 351 of measuring cup 350 is in outward-dipping shape, granule materials in measuring cup 350 is discharged in inlet 310 via base plate 351, as shown in Figure 2, in the packing film 600 by inlet 310, the importing of the confectionary pellets of set amount longitudinally sealed.

4, horizontal sealing cutoff device 520 is started, first roll body 521 and the second roll body 523 constant speed are turned round in opposite directions, spacing intermitter change between roller, between roller, spacing is close to time minimum, involution is carried out to the end opening of packing film 600, then between roller, spacing becomes large, rotate and walk around in described packing film one section that confectionary pellets is housed, during to the place suitable for reading of described packing film, between roller, spacing reverts to minimum, while carrying out involution successively to described packing film suitable for reading, embedded cutting knife 525 therefrom cuts off, and forms independent package bag product as shown in Figure 7.

Of course, the granule material package machine of the present embodiment also can be applied in the packaging of other granule materials, as tealeaves, particle electuary, powder, cereal etc.

With above-mentioned be only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (4)

1. a coiled strip feedway, it is characterized in that: comprise volume film roller, tolerant roller and tolerant brake equipment, described tolerant brake equipment comprises V-arrangement link span and adjusting connector, described V-arrangement link span has one for first pin jointed end hinged with described tolerant roller turning cylinder, one for be articulated with the second pin jointed end on external rack and one for be located on described volume film roller to establishing end, described V-arrangement link span is in the top of described volume film roller and tolerant roller, described second pin jointed end is articulated with on external rack, described first pin jointed end is articulated with on the turning cylinder of described tolerant roller, one end of described adjusting connector is fixed on external rack, the other end of described adjusting connector is fixed on described V-arrangement link span, make holding to being located on described volume film roller to establishing of described V-arrangement link span.

2. coiled strip feedway as claimed in claim 1, is characterized in that: described adjusting connector is extension spring.

3. coiled strip feedway as claimed in claim 1, is characterized in that: the rubber block described termination to establishing end being also provided with an increase contact friction force, described to establishing end to be connected on described volume film roller by described rubber block.

4. coiled strip feedway as claimed in claim 3, is characterized in that: the bearing surface of described rubber block is the cambered surface equal with described volume film roller periphery sinuousness.