CN207792291U - ABD pad folding machine - Google Patents

Abstract

The utility model discloses a kind of ABD pad folding machine, including rack and the discharging device, feed device, fracture draft gear and the folding discharging device that are successively set in rack；The folding discharging device, including laterally folded mechanism and longitudinal folding mechanism, the laterally folded mechanism, including two folding rotary shafts being mutually parallel, folding rotary shaft be equipped with it is multiple to pole, it is described to pole perpendicular to the folding rotary shaft；The longitudinal folding mechanism, including be vertically arranged and vertical with folding rotary shaft to folded plate, levelling bench was equipped with board slot with to the corresponding position of folded plate, set that there are two doubling delivery rolls side by side crossing below board slot.The utility model eliminates cost of labor, and fracture is accurate, and folding is rapid efficient, and equipment cost is relatively low, compact-sized to occupy little space.

Description

ABD pad folding machine

Technical field

The utility model belongs to medical supplies production technical field, and in particular to a kind of ABD pad folding machine.

Background technology

Human body is in the course of surgery, medical to need to wipe the blood on scalpel edge and surgical instrument with ABD pad with side Just see related parts of human body clearly, accurately perform the operation.The production generally use of existing ABD pad is semi-automatic, first by entire volume Gauze is cut into block, is then folded into four layers.If folded using artificial, additional cost of labor is unfavorable for cost control, and raw It produces inefficient；If using machine foldable, the doubling of both direction in length and breadth in the prior art needs two folding apparatus difference It is folded, intermediate to be transmitted by rotating mechanism or conveyer belt, not only equipment cost is very high, and occupied space is larger and the time is consumed Take more, folding efficiency is difficult to be promoted.

Utility model content

For the deficiency in the presence of the prior art, the utility model provide one kind remove from cost of labor, fracture it is accurate, Folding is efficient rapidly, equipment cost is relatively low, the compact-sized ABD pad folding machine to occupy little space.

ABD pad folding machine, including rack and be successively set in rack for gauze blowing discharging device, use In the feed device of gauze feeding, for accurately cutting gauze into the fracture draft gear of required size and for rolling over gauze The folding discharging device folded and discharged；

The folding discharging device, including laterally folded mechanism and longitudinal folding mechanism；

The laterally folded mechanism includes two folded turnings being mutually parallel across rack both sides and on levelling bench Axis, two folding rotary shafts are driven by stepper motor respectively, and the folding rotary shaft is equipped with multiple to pole, the doubling Bar is perpendicular to the folding rotary shaft；

The longitudinal folding mechanism, the middle upper part position for being included in two folding rotary shafts is vertically arranged and and folding rotary shaft It is vertical to folded plate, described to allow the folding retractable mechanism to move up and down vertically to folded plate to being equipped at the top of folded plate, the water Average with to the corresponding position of folded plate be equipped with allow it is described to folded plate in the vertical direction by cross board slot, it is described cross board slot Lower section, which is equipped with, is driven with two doubling delivery rolls side by side to folded plate cooperation, the doubling delivery roll by stepper motor It is dynamic.

As an optimization, the folding discharging device further includes discharging mechanism；The discharging mechanism includes being arranged described right The conveyer belt below delivery roll is rolled over, the conveyer belt is slightly tilted down along direction of transfer, and the conveyer belt is turned by two transmission Axis is mounted in rack, and the transmission shaft is driven by stepper motor.

As an optimization, the folding retractable mechanism is arranged by mounting plate in rack, described to be additionally provided with to folded plate both sides Vertical guide rod, the guide rod, which is upward through, is arranged on the mounting plate aperture.

As an optimization, the fracture draft gear, including cutter mechanism and folder cloth haulage gear；

The cutter mechanism, including the opposite upper slitter of blade and cut, it is equipped at the top of the upper slitter and controls the upper slitter edge The cutter telescoping mechanism of vertical direction movement, the cutter telescoping mechanism are fixed by the bracket in rack.

As an optimization, the folder cloth haulage gear, including folder cloth structure and hitch structure；

The folder cloth structure, including bottom plate and the riser being arranged on bottom plate, the riser, which is equipped with, presss from both sides cloth telescoping mechanism, The telescopic end of the folder cloth telescoping mechanism is connected with for cloth inserted clamping plate, and the clamping plate is rotatably installed in the bottom plate On；

The hitch structure, including chain tooth wheel shaft and the chain on the chain tooth wheel shaft, the bottom plate Bottom is mounted on the chain, and the chain tooth wheel shaft is driven by servo motor.

As an optimization, symmetrical on the riser to set there are two cloth telescoping mechanism is pressed from both sides, the discharging device, feeding fill It sets, cutter mechanism is also symmetrically disposed in the other side of the folding discharging device about the folding discharging device.

As an optimization, the feed device, including coil feeder, mistake cloth structure and backing stop structure；

The coil feeder, including drive roll and the driven voller that is pressed on the drive roll, the drive roll and send volume electricity Machine output end connects, and the driven voller is connect by driven rocker structure with driven telescoping mechanism；The driven rocker structure packet Driven rocker shaft and the driven rocking arm on driven rocker shaft are included, the driven one end connects with driven voller It connects, the other end is connect with driven telescoping mechanism；The driven rocker shaft is mounted in rack；

It is described to cross cloth structure, including the rack being vertically arranged in rack and setting can be along described on the rack The jockey pulley that rack moves up and down, the jockey pulley both ends are equipped with and the matched tension roller gear of the rack；

The backing stop structure, including laterally setting and the corresponding upper pressure plate in position and lower pressure plate, the upper pressure plate Upside is connect by retaining rocker structure with retaining telescoping mechanism；The retaining rocker structure includes retaining rocker shaft and set The retaining rocking arm being located on retaining rocker shaft, the retaining one end are connect with upper pressure plate, and the other end is flexible with retaining Mechanism connects；The retaining rocker shaft is mounted in rack.

As an optimization, steel rider and rubber roller, the upper pressure plate and lower pressure plate is respectively adopted in the drive roll and driven voller It is band iron or band steel.

As an optimization, the discharging device includes unreeling structure and edge-folding mechanism；

The unreeling structure, including be wrapped with the gauze roller of gauze, cloth transfer roller and unreel driving device, it is described to unreel driving dress The output end set is connect with gauze roller.

As an optimization, gas expansion shaft may be used in the gauze roller, and magnetic powder motor may be used in the driving device that unreels.

Compared with the prior art, the utility model has the advantages that：

1, the utility model is used is arranged fold mechanism in the horizontal and vertical both direction of same equipment, compact-sized It occupies little space, saves cost, fold rapid efficient；

2, the utility model presss from both sides cloth structure using servo motor by chain-driving, cutter mechanism can be coordinated to be precisely controlled The length of fracture；

3, the utility model coordinated cloth structure using backing stop structure, realized the function of self-feeding, and rate of feed It is highly stable.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is discharging device structural schematic diagram in the utility model；

Fig. 3 is the structural schematic diagram of feed device in the utility model；

Fig. 4 is the structural schematic diagram of fracture draft gear in the utility model；

Fig. 5 is the structural schematic diagram of folding discharging device in the utility model；

Fig. 6 is longitudinal folding structural scheme of mechanism in the utility model.

Wherein, 1- unreeling structures, 11- gauzes, 12- gauze rollers, 2- edge-folding mechanisms, 21- cloth transfer rollers, 22- setting rolls, 3- are sent Roll up mechanism, 31- drive rolls, 32- driven vollers, 33- send volume motor, the driven telescoping mechanisms of 34-, 35- slave arm shafts, and 36- is driven Rocking arm, 4- cross cloth structure, 41- racks, 42- jockey pulleys, 43- tension roller gears, 5- backing stop structures, the upper pressure plates of 51-, under 52- Pressure plate, 53- retaining telescoping mechanisms, 54- retaining rocker shafts, 55- retaining rocking arms, 6- cutter mechanisms, 61- upper slitters, under 62- Knife, 63- cutter telescoping mechanisms, 7- press from both sides cloth haulage gear, 71- bottom plates, 72- risers, 73- folder cloth telescoping mechanisms, 74- clamping plates, 75- Chain tooth wheel shaft, 76- chains, 77- servo motors, 8- gauze fold mechanisms, 80- levelling benches, 81- folding rotary shafts, 82- cross breaks Stepper motor, 83- is to pole, and 84- is to folded plate, and 85- folding retractables mechanism, 86- doubling delivery rolls, 87- is vertical to roll over stepper motor, 88- mounting plates, 89- guide rods, 810- cross board slot, 9- discharging mechanisms, 91- conveyer belts, 92- transmission shafts, 93- discharging stepping electricity Machine.

Specific implementation mode

In order to which the technical means, creative features, achievable purpose and effectiveness for making utility model realize are easy to understand, below In conjunction with being specifically illustrating, the utility model is expanded on further.

ABD pad folding machine, as shown in Figure 1, being used for including rack (being not drawn into figure) and being successively set in rack The discharging device of gauze blowing is led for the feed device of gauze feeding, for accurately cutting gauze at the fracture of required size Leading-in device and folding discharging device for folding and discharging gauze.

As a kind of preferred embodiment, the discharging device, as shown in Fig. 2, including unreeling structure 1 and edge-folding mechanism 2.

The unreeling structure 1, including be wrapped with the gauze roller 12 of gauze 11 and unreel driving device, it is described to unreel driving device Output end connect with gauze roller 12.It is described unreel driving device driving gauze roller and stablize rotation unreel, gauze 11 is from gauze roller 12 release later to edge-folding mechanism.Gas expansion shaft may be used in the gauze roller 12, and magnetic powder may be used in the driving device that unreels Motor.Gauze roller can be well adapted for the roll of gauze of all size using gas expansion shaft, unreel driving device and use magnetic powder motor Torque can be smoothly output very much, the stability of follow-up flanging can be improved in this way.

The edge-folding mechanism 2 includes two cloth transfer rollers 21 bypassed successively by gauze and setting roll 22, and second is crossed cloth 7 words there are two being set on roller 21 for flanging turn steel pole.Stainless steel riders can be used in two cloth transfer rollers 21, and Buddhist nun can be used in setting roll 22 Imperial roller.Crimping unit turns steel pole by 7 words and flanging is realized in two cloth transfer roller cooperations, and the setting roll by 7 words for that will be turned The gauze of steel pole flanging is carried out shaping and is downstream released.

As a kind of preferred embodiment, the feed device, as shown in figure 3, including coil feeder 3, crossing 4 and of cloth structure Backing stop structure 5.

The coil feeder 3, including drive roll 31 and the driven voller 32 being pressed on the drive roll 31, the drive roll 31 It is connect by belt or shaft coupling with volume 33 output end of motor is sent, the driven voller 32 is stretched by driven rocker structure with driven Mechanism 34 connects.The driven rocker structure includes driven rocker shaft 35 and driven on driven rocker shaft 35 Rocking arm 36, described 36 one end of driven rocking arm are connect with driven voller 32, and the other end is connect with driven telescoping mechanism 34.It is described from shaking Arm shaft 35 is mounted in rack, and the driven telescoping mechanism 34 can make driven rocking arm 36 around driven rocking arm by stretching motion Shaft 35 rotates, to drive driven voller 32 to compress or unclamp drive roll 31.Since driven voller is pressed on drive roll, when The drive roll send volume motor driving under rotate when, the trend of gauze is come out from discharging device at this time, around from It is pierced by between drive roll and driven voller after dynamic rocker shaft.Steel rider and glue can be respectively adopted in the drive roll 31 and driven voller 32 Roller.Cylinder may be used in the driven telescoping mechanism 34.

It is described to cross cloth structure 4, including the rack 41 being vertically arranged in rack and setting can on the rack 41 The jockey pulley 42 moved up and down along the rack 41,42 both ends of the jockey pulley are equipped with and 41 matched jockey pulley of the rack Gear 43.Gauze 11 forms U-shaped, the tension that the jockey pulley 42 passes through its own gravity and gauze 11 from 42 downside of jockey pulley It is rolled repeatedly on vertical rack 41.

The backing stop structure 5, including laterally setting and the corresponding upper pressure plate 51 in position and lower pressure plate 52, the upper pressure 51 upside of tight plate is connect by retaining rocker structure with retaining telescoping mechanism 53.The retaining rocker structure includes that retaining rocking arm turns Axis 54 and the retaining Rocker arm 55 being set on retaining rocker shaft 54, described 5 one end of retaining Rocker arm 5 connect with upper pressure plate 51 It connects, the other end is connect with retaining telescoping mechanism 53.The retaining rocker shaft 54 is mounted in rack, the retaining telescoping mechanism 53 can be such that retaining Rocker arm 55 is rotated around retaining rocker shaft 54 by stretching motion, to drive upper pressure plate 51 to compress Or leave lower pressure plate 52.Since length is larger in the horizontal for pressure plate, in order to keep connection more stable, the retaining rocker shaft On can uniformly be arranged multiple rocking arms.Band iron or band steel may be used in the upper pressure plate 51 and lower pressure plate 52.The retaining is stretched Cylinder may be used in contracting mechanism 53.The gauze is passed through between upper and lower pressure plate, when the upper and lower pressure plate separation, yarn Cloth feeding；When the upper and lower pressure plate compresses, gauze stops feeding.

When feed device is started to work, gauze is released from discharging device, by coil feeder further around overtension roller downside And passed through between upper pressure plate and lower pressure plate, during gauze is downstream sent out, the jockey pulley is in gravity Under have the tendency that moving downward, so that gauze is tensioned the tractive force that gauze is pulled out from discharging device to be formed, to realize Cloth function.After the cutter in downstream cuts off gauze, gauze is rewinded under the drawing of jockey pulley and is returned in order to prevent, is filled in feeding It sets latter end and is additionally provided with stopping mechanism, backing stop structure compresses gauze before gauze cut-out, to continue to send backward after gauze cut-out It is unclamped when material.Backing stop structure coordinated cloth structure to realize the automatic feeding function of gauze.

As a kind of preferred embodiment, the fracture draft gear, as shown in figure 4, being led including cutter mechanism 6 and folder cloth Draw mechanism 7.

The cutter mechanism 6, including the opposite upper slitter 61 of blade and cut 62,61 top of the upper slitter is equipped with described in control The cutter telescoping mechanism 63 that upper slitter 61 vertically moves, the cutter telescoping mechanism 63 are fixed by the bracket mounted on rack On.Described cut is located proximate to gauze, can control upper slitter by cutter telescoping mechanism in this way and move up and down and is cut pair with coordinating Gauze is sheared.Cylinder may be used in the cutter telescoping mechanism 63.

The folder cloth haulage gear 7, including folder cloth structure and hitch structure.

The folder cloth structure, including bottom plate 71 and the riser 72 being arranged on bottom plate 71, the riser 72, which is equipped with, presss from both sides cloth The telescopic end of telescoping mechanism 73, the folder cloth telescoping mechanism 73 is connected with for cloth inserted clamping plate 74, and the clamping plate 74 is rotatable Ground is mounted on the bottom plate 71.The clamping plate can be realized as clip to yarn under the stretching motion of folder cloth telescoping mechanism The clamping and release of cloth.The folder cloth telescoping mechanism 73 is towards updrift side, for clamping gauze 11 and in hitch structure Gauze 11 is pulled to the position for being suitble to folding under cooperation.Cylinder may be used in the folder cloth telescoping mechanism 73.

It is symmetrical on the riser 72 to set that there are two folder cloth telescoping mechanisms 73 as further preferred scheme.Exist It is also symmetrical arranged a folder cloth telescoping mechanism backwards to the direction of upstream and so presss from both sides cloth haulage gear and folding discharging device Two production lines (that is discharging device, feed device of upstream and cutter mechanism is symmetrical sets can symmetrically be used Set), two production lines share a set of folder cloth haulage gear and folding discharging device, can so greatly improve folding and The efficiency of discharging, while can also effectively save cost.

The hitch structure, including chain tooth wheel shaft 75 and the chain 76 on the chain tooth wheel shaft 75, institute 71 bottom of bottom plate is stated on the chain 76, the chain tooth wheel shaft 75 is driven by servo motor 77.The traction knot Structure is in upper slitter and cuts the in the case of of separating and clamps gauze and gauze is pulled a distance, and then backing stop structure is by gauze pressure Tightly, cutter mechanism cuts off gauze, when again gauze folding discharging rear haulage structure drives folder cloth structure to return to initial position, beginning Next round is drawn.

The hitch structure coordinates chain realization that folder cloth structure is allowed to move back and forth fixation under the accurately controlling of servo motor Distance, the distance determines according to the specification of the ABD pad of required production, and the distance, that is, gauze open end is to being cut The distance of cutter mechanism off-position, that is, cut-off gauze length.

As a kind of preferred embodiment, the folding discharging device, as shown in figure 5, including gauze fold mechanism 8 and going out Expect mechanism 9.

The gauze fold mechanism 8, including laterally folded mechanism and longitudinal folding mechanism.

The laterally folded mechanism includes across rack both sides and two folded turnings being mutually parallel on levelling bench 80 Axis 81, two folding rotary shafts 81 are driven by cross break stepper motor 82 respectively, and it is multiple right that the folding rotary shaft 81 is equipped with Pole 83, it is described that pole 83 perpendicular to the folding rotary shaft 81 and can be made to be layered on transverse direction by the rotation of folding rotary shaft 81 Doubling occurs for the gauze 11 on fold mechanism.

The longitudinal folding mechanism, as shown in fig. 6, the middle upper part position for being included in two folding rotary shafts 81 is vertically arranged And it is vertical with folding rotary shaft 81 to folded plate 84, it is described 84 top of folded plate is equipped with to allow described move up and down vertically to folded plate 84 Folding retractable mechanism 85, the levelling bench 80 with to the corresponding position of folded plate 84 be equipped with allow it is described to folded plate 84 in vertical direction On pass through cross board slot 810, be equipped with and described two doublings side by side that folded plate 84 coordinates passed in described cross below board slot 810 Roller 86 is passed, the doubling delivery roll 86 is driven by vertical folding stepper motor 87.Cylinder can be used in the folding retractable mechanism 85.Institute Folding retractable mechanism 85 is stated by mounting plate 88 to be arranged in rack, it is described that 84 both sides of folded plate are additionally provided with vertical guide rod 89, The guide rod 89 is upward through aperture on the mounting plate 88 and is used to guide described vertically stablize to folded plate 84 to move.

Before gauze fold mechanism start-up operation, the gauze after cutting first is laid in the transverse direction on levelling bench and is rolled over Above folded mechanism, initial open position is in pole at this time.Laterally folded mechanism starts to work later, by two stepping electricity Machine successively drives two folding rotary shafts to rotate inward, and gauze folds under the drive of folding rotary shaft to middle part at this time, right after folding Pole returns to initial position.After the completion of laterally folded, longitudinal folding mechanism starts to work, it is described to folded plate in folding retractable mechanism Drive under move straight down, so that gauze is occurred folded plate and the cooperation of doubling delivery roll when to folded plate by crossing board slot longitudinal It folds, gauze across the board slot excessively and comes level under the drive to folded plate by the gap two doubling delivery rolls Below platform, complete longitudinal folding.Gauze fold mechanism in this programme need not by the device of turntable etc, need not add Another folding apparatus is added to be achieved that doubling twice, it is simple in structure to fold rapidly.So, pass through the water in same equipment Fold mechanism is set in gentle vertical both direction, it is compact-sized to occupy little space, cost is not only saved, folding efficiency is also high.

The discharging mechanism 9, including the conveyer belt 91 below the doubling delivery roll 86 is set, 91 edge of the conveyer belt Direction of transfer slightly tilts down, and the conveyer belt 91 is mounted on by two transmission shafts 92 in rack, the transmission shaft 92 By discharging, stepper motor 93 drives.

It can will complete the gauze folded by conveyer belt in this way to send out below rack in time, facilitate subsequent packaging The operations such as processing.

Above description is merely a prefered embodiment of the utility model, on the scope of protection of the utility model is not limited in Embodiment is stated, every technical solution for belonging to the utility model principle belongs to the scope of protection of the utility model.For this For the technical staff in field, several improvement carried out under the premise of not departing from the principles of the present invention, these improvement It should be regarded as the scope of protection of the utility model.

Claims (10)

1. ABD pad folding machine, it is characterised in that：

Including rack and the discharging device for gauze blowing being successively set in rack, the dress of the feeding for gauze feeding It sets, for accurately cutting gauze into the fracture draft gear of required size and the folding discharging for folding and discharging gauze Device；

The folding discharging device, including laterally folded mechanism and longitudinal folding mechanism；

The laterally folded mechanism includes two folding rotary shafts being mutually parallel across rack both sides and on levelling bench, institute Two folding rotary shafts are stated to drive by stepper motor respectively, the folding rotary shaft be equipped with it is multiple to pole, it is described to hang down to pole Directly in the folding rotary shaft；

The longitudinal folding mechanism, the middle upper part position for being included in two folding rotary shafts are vertically arranged and vertical with folding rotary shaft To folded plate, it is described to allow the folding retractable mechanism to move up and down vertically to folded plate to being equipped at the top of folded plate, it is described horizontal flat Platform with to the corresponding position of folded plate be equipped with allow it is described to folded plate in the vertical direction by cross board slot, it is described cross board slot below Equipped with two doubling delivery rolls side by side to folded plate cooperation, the doubling delivery roll driven by stepper motor.

2. ABD pad folding machine according to claim 1, it is characterised in that：

The folding discharging device further includes discharging mechanism；The discharging mechanism includes being arranged below the doubling delivery roll Conveyer belt, the conveyer belt are slightly tilted down along direction of transfer, and the conveyer belt is mounted on by two transmission shafts in rack, The transmission shaft is driven by stepper motor.

3. ABD pad folding machine according to claim 1, it is characterised in that：

The folding retractable mechanism is arranged by mounting plate in rack, described that folded plate both sides are additionally provided with vertical guide rod, institute It states guide rod and is upward through and aperture is set on the mounting plate.

4. ABD pad folding machine according to claim 1, it is characterised in that：

The fracture draft gear, including cutter mechanism and folder cloth haulage gear；

The cutter mechanism, including the opposite upper slitter of blade and cut, it is equipped at the top of the upper slitter and controls the upper slitter along vertical The cutter telescoping mechanism of direction movement, the cutter telescoping mechanism are fixed by the bracket in rack.

5. ABD pad folding machine according to claim 4, it is characterised in that：

The folder cloth haulage gear, including folder cloth structure and hitch structure；

The folder cloth structure, including bottom plate and the riser being arranged on bottom plate, the riser is equipped with folder cloth telescoping mechanism, described The telescopic end of folder cloth telescoping mechanism is connected with for cloth inserted clamping plate, and the clamping plate is rotatably installed on the bottom plate；

The hitch structure, including chain tooth wheel shaft and the chain on the chain tooth wheel shaft, the bottom base plate On the chain, the chain tooth wheel shaft is driven by servo motor.

6. ABD pad folding machine according to claim 5, it is characterised in that：

Symmetrical on the riser to set there are two cloth telescoping mechanism is pressed from both sides, the discharging device, feed device, cutter mechanism also close It is symmetrically disposed in the other side of the folding discharging device in the folding discharging device.

7. ABD pad folding machine according to claim 1, it is characterised in that：

The feed device, including coil feeder, mistake cloth structure and backing stop structure；

The coil feeder, including drive roll and the driven voller that is pressed on the drive roll, the drive roll and send that roll up motor defeated Outlet connects, and the driven voller is connect by driven rocker structure with driven telescoping mechanism；The driven rocker structure include from Dynamic rocker shaft and the driven rocking arm on driven rocker shaft, the driven one end are connect with driven voller, separately One end is connect with driven telescoping mechanism；The driven rocker shaft is mounted in rack；

It is described to cross cloth structure, including the rack being vertically arranged in rack and setting can be along the racks on the rack The jockey pulley moved up and down, the jockey pulley both ends are equipped with and the matched tension roller gear of the rack；

The backing stop structure, including laterally setting and the corresponding upper pressure plate in position and lower pressure plate, the upper pressure plate upside It is connect with retaining telescoping mechanism by retaining rocker structure；The retaining rocker structure includes retaining rocker shaft and is set in Retaining rocking arm on retaining rocker shaft, the retaining one end are connect with upper pressure plate, the other end and retaining telescoping mechanism Connection；The retaining rocker shaft is mounted in rack.

8. ABD pad folding machine according to claim 7, it is characterised in that：

Steel rider and rubber roller is respectively adopted in the drive roll and driven voller, and the upper pressure plate and lower pressure plate are band iron or band steel.

9. ABD pad folding machine according to claim 1, it is characterised in that：

The discharging device includes unreeling structure and edge-folding mechanism；

The unreeling structure, including be wrapped with the gauze roller of gauze, cloth transfer roller and unreel driving device, the driving device that unreels Output end is connect with gauze roller.

10. ABD pad folding machine according to claim 9, it is characterised in that：

Gas expansion shaft may be used in the gauze roller, and magnetic powder motor may be used in the driving device that unreels.