CN207024177U - Rubber band adds mechanism - Google Patents

Abstract

The utility model discloses a kind of rubber band to add mechanism, its drip irrigation device is to include frame, glue-spraying device, heater, upper muscle device, straight muscle guider and bent muscle guider, upper muscle device includes straight muscle feed mechanism and bent muscle feed mechanism, straight muscle feed mechanism includes tensioning apparatus, tensioning apparatus includes upper roller and lower roll, rubber band bypasses below upper roller with the top of upper roller, upper roller and lower roll are horizontally disposed with and its length direction is vertical with the direction of motion of substrate, has reached the effect for the fixation for being easy to substrate and rubber band.

Description

Rubber band adds mechanism

Technical field

It the utility model is related to a kind of drawing and draw trousers production equipment, more particularly to a kind of rubber band adds mechanism.

Background technology

It is a kind of paper diaper for possessing and conveniently wearing off design to draw trousers.The elastic force waistline for drawing trousers to be provided with 360 degree.It is existing Draw the Chinese patent of trousers such as Application No. 201510454975.6, disclose it is a kind of draw trousers, including front waist, rear waist and Compound diaper, for compound diaper located at the crotch point between front waist and rear waist, the front waist and rear waist are equipped with waist Rubber band, each spaced setting of waistline rubber band are enclosed, the waistline rubber band of the front waist includes the first outer waistline rubber band With first in waistline rubber band, the first outer waistline rubber band has 10 ~ 20, and waistline rubber band has 3 ~ 8 in described first Root simultaneously includes waistline rubber in the second outer waistline rubber band and second close to crotch point, the waistline rubber band of the rear waist Muscle, the second outer waistline rubber band have 8 ~ 12, and waistline rubber band has 4 ~ 10 and close to crotch positions in described second Put.This drawing draws the arrangement of the waistline rubber band of trousers to set, and is more suitable for infant's dress, and the body often being had according to infant moves Make, will it is tight outside the rubber band of front waist in pine, comfortable ventilating, tight in the outer pine of rubber band of rear waist, fitting waist plays more preferably Leak preventing effect.

Producing this drawing draws trousers to need after twining coiled rubber band volume progress loose winding, and rubber band is bonded in as substrate Non-woven fabrics on, rubber band need it is fixed in substrate linearly and two kinds of shapes of circular arc and need to stretch on rubber band and open, Substrate is cut out to the shape of front waist, rear waist and crotch again.Therefore need to set special rubber band to add mechanism.

Utility model content

The purpose of this utility model is to provide a kind of rubber band and adds mechanism, is easy to the fixation of substrate and rubber band.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of rubber band add mechanism, including frame, glue-spraying device, heater, upper muscle device, straight muscle guider with And bent muscle guider, upper muscle device include straight muscle feed mechanism and bent muscle feed mechanism, straight muscle feed mechanism includes tensioning and filled Put, tensioning apparatus includes upper roller and lower roll, and rubber band is bypassed below upper roller with the top of upper roller, and upper roller and lower roll are horizontally disposed with And its length direction is vertical with the direction of motion of substrate.

By using above-mentioned technical proposal, the basad injection glue of glue-spraying device is set, sets glue spraying box to be sprayed from glue spraying box Go out glue, rubber band is bonded in substrate, by upper muscle device, the rubber band that rubber band is changed into deploying from coiled state, Using straight muscle guider by the rubber band of linear state be tied to rubber band should position, utilize bent muscle guider will Rubber band is pulled to make the track of rubber band make rubber band be bonded according to shaped form with substrate into curvilinear motion.Tensioning apparatus is set, The frictional force being burdened with is contacted with upper roller and lower roll by rubber band and substrate drives the tractive force for being bonded at rubber band motion thereon, will Rubber band stretching, tensioning, can make rubber band and substrate in the case where being synchronized with the movement, and ensure when rubber band recovers nature, base Bottom can purse up.It is easy to the fixation of substrate and rubber band.

Preferably, tensioning apparatus also includes two tensioning frames and the positioner being rotatably connected in frame, upper roller turns It is dynamic to be connected on tensioning frame and pivot center is parallel to its length direction, the pivot center of upper roller and the rotary shaft away from tensioning frame Line, lower roll are fixed on another tensioning frame, and lower roll deviates the pivot center of its tensioning frame connected.

By using above-mentioned technical proposal, the tensioning frame of rotation is set, by rotating tensioning frame respectively, thus it is possible to vary upper roller Horizontal range distance and vertical distance between lower roll.So as to change envelope length of the rubber band in upper roller and lower roll, i.e., Change the frictional force between rubber band and upper roller and lower roll, set upper roller to avoid the rubber between upper roller and lower roll to rotate Rubber band is too tensioned, and prevents rubber band from breaking.

Preferably, positioner is the fixing bolt being threaded on tensioning frame, fixing bolt abuts with frame.

By using above-mentioned technical proposal, fixing bolt is set, by pressure caused by the abutting of fixing bolt and frame, Make to overcome the power of the relative sliding friction between fixing bolt and frame to become big, so that tensioning frame is relatively fixed with frame.

Preferably, straight muscle guider is fixed on lower roll.

By using above-mentioned technical proposal, lower roll is not rotated with tensioning frame, and straight muscle guider is arranged on lower roll, is tensioned The influence that frame is rotated to straight muscle guider is relatively small.

Preferably, straight muscle guider is uniformly fixed in guiding on lower roll periphery and parallel to each other including multiple Post, the length direction of the length direction of lead perpendicular to lower roll.

By using above-mentioned technical proposal, set multiple leads that the position restriction of rubber band is adjacent at two Between lead, make every rubber band corresponding in the position of design requirement cathetus type rubber band.

Preferably, lead is cylinder.

By using above-mentioned technical proposal, lead is set to reduce what rubber band contacted with lead for cylinder Friction, help to protect rubber band.

Preferably, the one end of lead away from lower roll is connected with the convex cap of protrusion guiding column sidewall, between adjacent convex cap Spacing is not less than the diameter of rubber band.

By using above-mentioned technical proposal, convex cap is set, rubber band can be reduced from being jumped out between similar lead Possibility, while ensure that rubber band easily can enter between adjacent picture lead.

In summary, the utility model has the advantages that：

It is easy to the fixation of substrate and rubber band；Prevent rubber band from breaking；Tensioning frame rotates the influence to straight muscle guider It is relatively small；Make every rubber band corresponding in the position of design requirement cathetus type rubber band；Help to protect rubber band；Reduce Rubber band is from the possibility jumped out between similar lead.

Brief description of the drawings

Fig. 1 is the structural scheme of mechanism that rubber band adds mechanism；

Fig. 2 is the structural representation of glue-spraying device and bent muscle guider；

Fig. 3 is the sectional view of glue-spraying device；

Fig. 4 is the structural scheme of mechanism of gripper jaw；

Fig. 5 is the structural scheme of mechanism of bent muscle feed mechanism；

Fig. 6 is structural scheme of mechanism when bent muscle feed mechanism balladeur train pulls out；

Fig. 7 is the structural representation of tensioning apparatus；

Fig. 8 is enlarged drawing at A in Fig. 7.

In figure, 1, frame；The 11st, mouth is set；2nd, glue-spraying device；21st, support roller；22nd, bar is adjusted；221st, locating slot；23rd, spray Glue box；231st, tight fixed bolt；24th, nozzle；25th, glue box are connect；26th, platform is adjusted；27th, adjustment bolt；271st, handle；272nd, it is anti-skidding Line；3rd, heater；31st, fix bar；32nd, heating lamp；4th, upper muscle device；41st, straight muscle feed mechanism；411st, straight ledges；4111、 Rotating shaft；412nd, straight muscle roller；413rd, straight muscle dividing plate；414th, export wheel；4141st, muscle groove；415th, strainer；4151st, tensioning frame； 4152nd, upper roller；4153rd, lower roll；4154th, fixing bolt；416th, gear；417th, timing belt；418th, motor；42nd, bent muscle feeder Structure；421st, bent ledges；4211st, slide rail；422nd, balladeur train；4221st, slide opening；4222nd, groove is passed through；423rd, bent muscle roller；424th, bent muscle every Bar；425th, lever；5th, lead；51st, convex cap；6th, bent muscle guider；61st, bent muscle slide bar；611st, steadying plate；612nd, pass through Hole；62nd, support frame；621st, supporting plate；622nd, support bar；623rd, skidway hole；63rd, muscle pawl is held；64th, pawl head；641st, claw slot.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.Wherein identical parts identical accompanying drawing Mark represents.It should be noted that the word "front", "rear", "left", "right", the "up" and "down" that are used below in description refer to It is the direction in accompanying drawing, word " bottom surface " and " top surface ", " interior " and " outer " are referred respectively to towards or away from particular elements geometry The direction at center.

A kind of rubber band adds mechanism, as shown in figure 1, including frame 1, glue-spraying device 2, heater 3, upper muscle device 4, Straight muscle guider and bent muscle guider 6.

As shown in Fig. 2 glue-spraying device 2 is arranged in frame 1, glue-spraying device 2 includes the cylinder being rotatably connected in frame 1 Two support rollers 21 of shape, 22, the two glue spraying boxes 23 of cylindrical adjustment bar being rotatably connected in frame 1 and connect glue box 25。

With reference to shown in Fig. 3, support roller 21 is cylinder, and two support rollers 21 are horizontally disposed and parallel to each other.Support roller 21 Pivot center overlapped with own axes and perpendicular to the direction of transfer of substrate.In two support rollers 21 1, once set, and lean on The support roller 21 of lower setting is located at the left end of another support roller 21.

Bar 22 is adjusted to be cylindrical shaft-like, the axis and the diameter parallel of support roller 21 of adjustment bar 22.Substrate is from support roller Bypassed on 21, substrate is located between support roller 21 and adjustment bar 22.The height of adjustment bar 22 is located at the height of two support rollers 21 Between.

With reference to shown in Fig. 3, the locating slot 221 of strip is provided with the periphery at the both ends for adjusting bar 22.On glue spraying box 23 The rod aperture being adapted with adjustment bar 22 is provided with, is provided with glue spraying box 23 perpendicular to rod aperture and connects the screwed hole of rod aperture.Adjust bar 22 pass through from the rod aperture of two glue spraying boxes 23, and two glue spraying boxes 23 is separately positioned on the both ends for adjusting bar 22.Glue spraying box Screwed hole internal thread on 23 is connected with tight fixed bolt 231.Tight fixed bolt 231 is extend into locating slot 221, and and locating slot 221 abut close to the end face of the adjustment pivot center of bar 22.The width of locating slot 221 is identical with the big footpath of tight fixed bolt 231.

The internal slide of glue spraying box 23 is connected with pressurizing block, and pressurizing block is adapted with the inwall of glue spraying box 23.The one of pressurizing block End is provided with cylinder, and cylinder is fixed on glue spraying box 23, and the output end of cylinder is fixed in pressurizing block.Nozzle 24 is arranged on glue spraying The one end of box 23 away from cylinder, and positioned in glue spraying box 23 towards one end of support roller 21.Glue spraying box 23 is in nozzle 24 and pressurization Glue is housed between block.Nozzle 24 is elongated, the linear type of glue for spraying it, and the straight line and the axle of support roller 21 Line is parallel.

The center of gravity of axis of the center of gravity of glue spraying box 23 away from adjustment bar 22, nozzle 24 and glue spraying box 23 is positioned at the adjustment axle of bar 22 The same side of line.Adjustment platform 26 is connected with the frame 1 of the one end of support bar 622.Support bar 622 is close to adjustment platform 26 Periphery on be provided with screwed hole, the axis of the axis and support bar 622 of the screwed hole intersects vertically.And in glue spraying box 23 The heart to adjustment bar 22 vertical line and the screwed hole axis between angle be acute angle.The screwed hole internal thread is connected with tune Whole bolt 27.Glue spraying box 23 under gravity, adjustment bolt 27 is against on the upper surface of adjustment platform 26.Adjustment bolt 27 Bolt head on be arranged with cylinder handle 271.Multiple strias uniformly arranged are provided with the periphery of handle 271, it is described Stria forms anti-slip veins 272.

Glue box 25 are connect as the box-like of open upper end.Glue box 25 are connect to be fixed in frame 1, and positioned at the lower section of glue spraying box 23. The projection of glue spraying box 23 in the horizontal plane, which is entirely fallen within, connects glue box 25 in the projection of horizontal plane, enable to connect glue box 25 be connected to from The glue of the optional position of glue spraying box 23 drippage.

Heater 3 includes the fix bar 31 being fixed in frame 1 and the heating lamp 32 being fixed in fix bar 31.Gu Fixed pole 31 is length direction and the strip bar of the diameter parallel of support roller 21.Fix bar 31 is arranged on adjustment bar 22 away from support The side of roller 21.And heating lamp 32 is set towards support roller 21.

Fig. 1 is reviewed, upper muscle device 4 is arranged on the one end of heater 3 away from support roller 21.Upper muscle device 4 includes affixed Straight muscle feed mechanism 41 and bent muscle feed mechanism 42.

Straight muscle feed mechanism 41 include the straight muscle roller 412 of affixed straight ledges on the ground 411, four, straight muscle dividing plate 413, Export wheel 414, strainer 415 and feeding driving device.Straight muscle roller 412 is rotatablely connected with straight ledges 411, straight muscle roller 412 Pivot center is horizontal and vertical with the axis of support roller 21.Straight ledges is stretched out in the both sides for being arranged on the straight muscle roller 412 at both ends 411.Make to be in one end in the projection of the straight muscle roller 412 at both ends on the ground away from each other to fall outside straight ledges 411.Wherein two Individual adjacent straight muscle roller 412 is one group.Corresponding place is in the linear of the same side on drawing drawing trousers on one group of straight muscle roller 412 Rubber muscular cramp.Be placed with multiple rubber muscular cramps on the straight muscle roller 412 of two of each group, the axis of the rubber muscular cramp with support Roller 21 is parallel.

Export wheel 414 is provided with multiple, corresponds to each rubber muscular cramp respectively.Export wheel 414 rotates with straight ledges 411 to be connected Connect.Straight ledges 411 is threaded with multiple with exporting 414 one-to-one cylinders of wheel in the side wall of the axis of support roller 21 The rotating shaft 4111 of shape, the diameter parallel of rotating shaft 4111 is in the axis of support roller 21.It is remote that export wheel 414 is rotatably connected on rotating shaft 4111 From one end of straight ledges 411.414 points of export wheel is two groups, is uniformly arranged on the both sides of straight ledges 411 respectively, and right respectively Answer two groups of straight muscle rollers 412.The pivot center and the diameter parallel of support roller 21 of export wheel 414, and the axis of all export wheels 414 In same level.The muscle groove 4141 of the annular coaxial with outlet roller is provided with the periphery of export wheel 414.Rotating shaft 4111 Be threaded in that length in straight ledges 411 is different, make export wheel 414 to straight ledges 411 air line distance with export wheel 414 away from Become remote from becoming remote with a distance from support roller 21, muscle groove 4141 is changed to the distance of straight ledges 411 in equal difference.

Straight muscle dividing plate 413 is provided with multiple and is fixed in straight ledges 411, and straight muscle dividing plate 413 is "T"-shaped thin plate.Directly The latter half of muscle dividing plate 413 is arranged between two groups of straight muscle rollers 412, and top half extends laterally into two groups of straight muscle rollers respectively 412 surface is straight.Straight 413 parallel to each other and adjacent straight muscle dividing plate 413 spacing of muscle dividing plate and the axial length of rubber muscular cramp It is identical.

As shown in fig. 7, strainer 415 is arranged between straight ledges 411 and heater 3.Strainer 415 includes two Individual tensioning frame 4151, upper roller 4152 and lower roll 4153.Tensioning frame 4151 is rectangular slat shape, and two tensioning frames 4151 rotate respectively It is connected in frame 1, the pivot center of tensioning frame 4151 and the diameter parallel of support roller 21, and the center of rotation of tensioning frame 4151 It is arranged on one end of tensioning frame 4151.Upper roller 4152 is rotatably connected on tensioning frame 4151 away from support roller 21.Upper roller 4152 For cylinder and using its own axis as pivot center, the pivot center of upper roller 4152 and the diameter parallel of support roller 21.Upper roller Center of rotation of 4152 center of rotation away from tensioning frame 4151.Lower roll 4153 is cylinder, is fixed in close to support roller 21 On tensioning frame 4151.The axis of lower roll 4153 is parallel with upper roller 4152, and lower roll 4153 is arranged far from the rotary shaft of tensioning frame 4151 One end of line.Screwed hole is provided with tensioning frame 4151, the axis of the screwed hole is parallel with the pivot center of tensioning frame 4151. Screwed hole internal thread on tight frame 4151 is connected with fixing bolt 4154, and fixing bolt 4154 abuts with frame 1.

As shown in figure 1, feeding driving device includes gear 416, timing belt 417 and motor 418, each straight muscle roller 412 is remote One end from support roller 21 is connected with a gear 416.The timing belt 417 of annular is arranged with four gears 416, makes each tooth The bucket fish of wheel 416 timing belt 417 engages.Coaxial affixed of the output shaft of motor 418 and one of gear 416.

Bent muscle feed mechanism 42 is arranged between straight muscle feed mechanism 41 and heater 3.Bent muscle feed mechanism 42 includes Bent ledges 421,422, two bent muscle rollers 423 of balladeur train, multiple bent muscle parting beads 424 and stopping means.As shown in Figure 5 and Figure 6, it is bent Ledges 421 is fixed in frame 1, is connected with two cylindrical slide rails 4211 in bent ledges 421, slide rail 4211 it is horizontally disposed and Each parallel in support roller 21, the one end of slide rail 4211 away from frame 1 is hanging.The bottom of balladeur train 422 is provided with and the phase of slide rail 4211 The slide opening 4221 of adaptation, slide rail 4211 pass through slide opening 4221, balladeur train 422 is slided along slide rail 4211.Two bent muscle rollers 423 rotate It is connected on balladeur train 422, the pivot center of bent muscle roller 423 and the diameter parallel of support roller 21.Bent muscle parting bead 424 is fixed in balladeur train 422 upper surface, and bent muscle parting bead 424 is arranged between two bent muscle rollers 423, the upper end of bent muscle parting bead 424 extends two songs The top of muscle roller 423.Each two song muscle parting bead 424 is one group, the spacing of same group of introversion muscle parting bead 424 and the axle of rubber muscular cramp It is identical to length.

Stopping means includes being rotatably connected on lever 425 of the slide rail 4211 away from the one end of frame 1, and the diameter of lever 425 is small In the diameter of slide rail 4211, the axis of the pivot center of lever 425 parallel to slide rail 4211.Lever 425 is homogeneous bar, lever Length direction of 425 pivot center perpendicular to lever 425.The part one of the center of rotation both sides of lever 425 is grown, one short.Balladeur train 422 one end away from frame 1 be provided with horizontally disposed flat rectangle by groove 4222, the axle of slide opening 4221 is passed through by groove 4222 Line.Distance of the lever 425 to the nearer one end of its center of rotation to center of rotation is less than the height by groove 4222, lever 425 Length be less than made by the length of groove 4222, can be by being passed through in groove 4222, when lever 425 is vertical when lever 425 is horizontal It can not be passed through from by groove 4222.

Such as Fig. 8 vegetarian diets, straight muscle guider includes multiple leads 5, and it is face-up that lead 5 is fixed in the circumference of lower roll 4153 Position.Lead 5 is cylinder, and the axis of all leads 5 extends parallel to one another and perpendicularly relative to the axis of lower roll 4153.Lead 5 points are two groups, are separately positioned on the both ends of lower roll 4153, corresponding with the position of two glue spraying boxes 23 respectively.Two groups of guiding Post 5 is uniformly arranged along the length direction of lower roll 4153.Spacing in same group between adjacent lead 5 is in design requirement The spacing of linear pattern rubber band.The one end of lead 5 away from lower roll 4153 is connected with the convex cap 51 of cylinder.Convex cap 51 is with being oriented to Post 5 is coaxial and the diameter of convex cap 51 is more than the diameter of lead 5.Being left between adjacent convex cap 51 allows between rubber band passes through Gap.

As shown in Fig. 2 bent muscle guider 6 is arranged on the top of glue-spraying device 2.Bent muscle guider 6 includes two bent muscle 61, two support frames 62 of slide bar, hold muscle pawl 63, pawl first 64 and drive device.Support frame 62 is fixed in frame 1, support frame 62 Including supporting plate 621 and support bar 622.Two through holes and two skidway holes 623 are provided with supporting plate 621.Support bar 622 from Passed through in through hole.The length direction of support bar 622 and the diameter parallel of support roller 21.Two support frames 62 are set one on the other.

Bent muscle slide bar 61 divides for upper boom and lower beam.Diameter parallel of the length direction of upper boom and lower beam with support roller 21. Upper boom slides in the skidway hole 623 in top support frame 62, sliding in skidway hole 623 of the lower beam in support frame 62 on the lower It is dynamic.The affixed steadying plate 611 in the one end of upper boom and lower beam away from frame 1, it is provided with by hole 612, support bar on steadying plate 611 622 from corresponding by being passed through in hole 612, slided in by hole 612.

As shown in figure 4, hold the bottom that muscle pawl 63 is fixed in steadying plate 611, the lower end of muscle pawl 63 is held towards support roller 21 1 End bending.Hold muscle pawl 63 and be connected with pawl first 64 close to one end of support roller 21, pawl first 64 and hold and be provided with through hole on muscle pawl 63.Pawl First 64 and hold muscle pawl 63 and fixed by the bolt through the through hole and the nut being connected with bolt thread.Pawl first 64 is towards support One end of roller 21 is provided with pectination claw slot 641, direction arrangement of the claw slot 641 along the axis direction parallel to support roller 21.It is arranged on Muscle pawl 63 is long than being arranged on holding on lower beam for muscle pawl 63 of holding on upper boom, and makes the height phase of two claw slots held on muscle pawl 63 641 Together.Need to be fixed curved rubber band and be arranged in claw slot 641.The edge of claw slot 641 is fillet structure.

Drive device includes two cylinders being fixed in frame 1, and the output end of cylinder is respectively and fixedly connected to two bent muscle and slided On bar 61.Mouth 11 is set as shown in Fig. 2 being provided with frame 1, the cylinder on lower beam is relatively near apart from frame 1, and the cylinder is placed on Set in mouth 11.

In use, substrate bypasses from support roller 21, substrate is drawn other devices on trousers production line to draw, from support Streaked on roller 21, rubber muscular cramp is placed on straight muscle roller 412 and bent muscle roller 423, the rubber muscular cramp on straight muscle roller 412 is placed on Between the straight muscle dividing plate 413 of two of each group, rubber band is bypassed below corresponding directive wheel, bypassed from the lower section of upper roller 4152 Afterwards, then above lower roll 4153 bypass, each rubber band all passes through between two adjacent leads 5；On bent muscle roller 423 Each rubber muscular cramp be correspondingly placed between the bent muscle parting bead 424 of adjacent two, rubber band is individually positioned in pectination claw slot In 641 each notch.Promote pressurizing block that glue is sprayed onto in substrate, all rubber bands are bonded in substrate.Two cylinders Upper boom and lower beam synchronous slide are driven respectively, and keep in opposite direction.Basesliding drives rubber band motion, departs from rubber band Rubber muscular cramp, and be constantly bonded in substrate.

This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but As long as all protected in right of the present utility model by Patent Law.

Claims (7)

1. a kind of rubber band adds mechanism, including frame (1), glue-spraying device (2), heater (3), upper muscle device (4), straight muscle Guider and bent muscle guider (6), upper muscle device (4) include straight muscle feed mechanism (41) and bent muscle feed mechanism (42), it is characterised in that：Straight muscle feed mechanism (41) includes tensioning apparatus, and tensioning apparatus includes upper roller (4152) and lower roll (4153), top of the rubber band with upper roller (4152) below upper roller (4152) bypasses, upper roller (4152) and lower roll (4153) water Put down setting and its length direction is vertical with the direction of motion of substrate.

2. rubber band according to claim 1 adds mechanism, it is characterised in that：Tensioning apparatus also includes being rotatably connected on machine Two tensioning frames (4151) and positioner on frame (1), upper roller (4152) are rotatably connected on tensioning frame (4151) and turned Shaft line is parallel to its length direction, the pivot center of upper roller (4152) and the pivot center away from tensioning frame (4151), lower roll (4153) it is fixed on another tensioning frame (4151), lower roll (4153) deviates the rotary shaft of its tensioning frame (4151) connected Line.

3. rubber band according to claim 2 adds mechanism, it is characterised in that：Positioner is to be threaded in tensioning frame (4151) fixing bolt (4154) on, fixing bolt (4154) abut with frame (1).

4. rubber band according to claim 3 adds mechanism, it is characterised in that：Straight muscle guider is fixed in lower roll (4153) on.

5. rubber band according to claim 4 adds mechanism, it is characterised in that：Straight muscle guider includes multiple uniform It is fixed on lower roll (4153) periphery and lead parallel to each other (5), the length direction of lead (5) is perpendicular to lower roll (4153) length direction.

6. rubber band according to claim 1 adds mechanism, it is characterised in that：Lead (5) is cylinder.

7. rubber band according to claim 1 adds mechanism, it is characterised in that：The remote lower roll (4153) of lead (5) One end is connected with the convex cap (51) of protrusion lead (5) side wall, and the spacing between adjacent convex cap (51) is straight not less than rubber band Footpath.