CN100439583C

CN100439583C - Elastic yarn feeding device

Info

Publication number: CN100439583C
Application number: CNB2004100679748A
Authority: CN
Inventors: 马信棣
Original assignee: Taiyang Textile Equipment & Material Co Ltd Cixi City
Current assignee: Zhejiang Sunzhou Electric Technology Co., Ltd.
Priority date: 2004-11-05
Filing date: 2004-11-05
Publication date: 2008-12-03
Anticipated expiration: 2024-11-05
Also published as: CN1619036A

Abstract

The present invention discloses an elastic yarn conveying device which comprises an outer shell, a supporting roller, etc. The elastic yarn conveying device is characterized in that the outer shell is divided into an upper cover, at least one cavity and a lower cover by at least two separating lines, a cavity body is formed by splicing a left side plate and a right side plate, and a pair of bearing supporting bases are integrally formed on the left side plate and the right side plate. Ball bearings are arranged in the bearing supporting bases, rotary shafts are tightly arranged in bearing holes of the ball bearings, and the supporting roller is tightly connected with the rotary shafts to be supported on the outer shell in a mode which can rotate around the axial line of the rotary shafts. The peripheral walls of the bearing supporting bases are provided with notches, and elastic gaskets are arranged in the notches. Since the bearing supporting bases are integrally formed with the side plates, the risk of generating non-circularity is small, and the installation accuracy of the bearings and the coaxiality between the bearings and the supporting roller are ensured. The notches and the elastic gaskets can avoid the looseness between outer rings of the bearings and the bearing bases, and can also counteract the thermal expansion phenomenon generated by the bearings, etc. Therefore, the service life of the bearings is greatly prolonged.

Description

Elastic yarn feeding device

Technical field

The present invention relates to the yarn-feeding device of the yarn-feeding device in the Knitting Machinery, particularly elastomeric yarn.

Background technology

Chinese patent ZL92242464 discloses a kind of elastic yarn feeding device that is used for knitting machine, and its structure mainly is made up of support, casing, case lid and backing roll four parts.Whole device is fixed on the steel loop of knitting machine by support, power is imported by knitting machine, pass to gear drive by rack-mount drive pulley, finally reach two groups of backing rolls, and make its synchronous rotation, rotate synchronously to realize the purpose of defeated yarn thereby drive the yarn tube that is positioned on the line sending roller.Wherein, the mounting structure of two groups of backing rolls as shown in Figure 7 in this device, two groups of bearing 36-36 ' of mounting support roller, another group bearing 38-38 ' of 37-37 ' and mounting teeth wheel transmission device lays respectively in the dead eye of casing 39 and case lid 40, in this mounting structure, the outer ring of bearing and dead eye must adopt interference fit.In addition, because casing 39 and case lid 40 adopts machine cuts processing, the centre-to-centre spacing of the centre-to-centre spacing of the dead eye of casing 39 in process (A, B, C) and the dead eye of case lid 40 (A ', B ', C ') exists bigger machining error unavoidablely.Like this, after final assembly, make every group of bearing disalignment of mounting support roller and gear drive, make shaft strength inhomogeneous, be in the state that runs up for a long time when using, thereby this structure has a strong impact on the service life of bearing owing to yarn-feeding device; Simultaneously, owing to disalignment between every group of bearing, it is very big to beat after backing roll is installed, and makes to be placed in can not evenly fail yarn and influence fabric quality for the yarn tube on two groups of backing rolls.

Chinese patent ZL96105672 then discloses another kind of elastic yarn feeding device, sees Fig. 8 and Fig. 9 for details.This yarn-feeding device has one to be divided into two-part shell, and rotatably support the parallel backing roll that separates on it.Shell has inner cavity chamber, to hold geared system, is used for the transmission backing roll.Geared system passes to backing roll with power.Backing roll is supported by ball bearing, and ball bearing is kept by the corresponding supporting base that is provided with in the enclosure.Bolster is recessed in the shell portion of global formation separately.The shell portion phase cut-off rule on boundary each other extends through whole supporting bases, and ball bearing is retained between the shell portion, and shell portion is fastening mutually, also just tightens up ball bearing simultaneously.Though the device of this structure has been exempted complicated machine cut processing, but because bearings mounted supporting base is combined by two shell portions respectively, therefore just there is bigger out-of-roundness in supporting base, when the bearing of mounting support roller and gear drive, also produce out-of-alignment phenomenon between each group, not only influence the service life of bearing, and equally also have influence on the defeated yarn quality of backing roll.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of novel elastic yarn feeding device at above-mentioned prior art present situation, it is not only made simply, easy for installation, and the more important thing is the good axiality of maintenance between every group of bearing that can make mounting support roller and transmission mechanism, not only prolong the service life of bearing, and make and have the accurate depth of parallelism between bearing and the backing roll, thereby make defeated yarn steady, even tension farthest improves fabric quality.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: this kind elastic yarn feeding device, it has a shell, one is used for shell is articulated to hanging mechanisms on the knitting machine steel loop, at least one group of backing roll that is used for defeated yarn and transmission mechanism that can drive at least one backing roll rotation of one group of backing roll that stretches out described shell, every group of backing roll is made of at least two backing rolls that separate that are parallel to each other, it is characterized in that, described shell is divided into a loam cake by at least two cut-off rules, at least one cavity and a lower cover, described cavity is put together by left plate and right plate, one-body molded on described left plate and the right plate have a paired bearing block, be equipped with ball bearing in the bearing block, close-fitting has rotating shaft in the dead eye of ball bearing, and described backing roll forms and can be bearing on the described shell around the mode that its axis rotates by being fastenedly connected with described rotating shaft.Backing roll is generally two groups, and backing roll is designed to separate parallel to each other, minimum spacing between their circumferential surfaces is less than the external diameter for the coil pipe of yarn bobbin, for yarn the time, goes out being placed on the backing roll that same direction rotates for the yarn tube of stretch yarn from its unwinding.

Form recess on the circumferential wall of described bearing block, the elastomeric pad that is used for supporting described ball bearing outer wall is housed in the recess.

The residing plane of described cut-off rule is parallel with described backing roll respectively.

Described loam cake, cavity and lower cover are assembled into one by the press fastening type fastener.

Described loam cake, cavity and lower cover are assembled into one by screw fastening device.

Described hanging mechanisms comprise be arranged on described loam cake head articulate groove and trip bolt with matching.

Described transmission mechanism is a gear drive, and it comprises clutch, drive pulley, power transmission shaft, transmission main shaft, driving belt and is installed in passive toothed wheel in the described rotating shaft; Wherein, driving belt comprises first driving belt and second driving belt, and rotating shaft comprises first rotating shaft and second rotating shaft, and passive toothed wheel comprises the first passive toothed wheel and the second passive toothed wheel; Described backing roll comprises first backing roll and second backing roll; Power transmission shaft stretches out described loam cake, drive pulley and clutch are installed in the upper end, the lower end for good and all connects an initiatively bevel gear, transmission main shaft is installed in the dead eye of the ball bearing of the bearing block that is arranged in described cavity, and and described backing roll is parallel to each other, initiatively bevel gear meshes with the passive bevel gear that is fixed on movably by holding screw on the transmission main shaft, the transmission main shaft and first backing roll promptly near the power transmission between the backing roll of transmission main shaft by first driving belt, the first passive toothed wheel that is installed in the active toothed wheel on the transmission main shaft and is installed in first rotating shaft is finished, and the power transmission between first backing roll and second backing roll is finished in the same way by second driving belt.As for driving belt, can be odontoid belt, circular belt and flat rubber belting and so on.

Described transmission main shaft is provided with two described passive bevel gears, so that change the direction of rotation of transmission main shaft.

This elastic yarn feeding device also has the circuit arrangement that is used to install spider watcher, this circuit arrangement is made up of the contact pilotage that is used to contact host power supply, conductor wire and a conductive plate that is embedded with sheet metal, contact pilotage is fixed in the loam cake of described shell, conductive plate is fastened in the lower cover of described shell, contact pilotage then is connected with conductor wire with conductive plate, spider watcher is articulated on the conductive plate, forms electric loop.

This elastic yarn feeding device also comprises retaining line bar, and retaining line bar is installed on the guide rail that is parallel to described backing roll.Retaining line bar is installed on the track that is provided with on the above mentioned conductive plate usually, and track is for the slippage back and forth of retaining line bar, to adapt to the usefulness of the cheese of fixing different sizes.

Compared with prior art, the invention has the advantages that: shell can adopt injection mo(u)lding, need not machining.Shell forms two cut-off rules from top to bottom, shell is divided into three case members, be loam cake, cavity and three parts of lower cover, wherein cavity by about two blocks of side plates synthetic, each three of the bearing blocks that gear transmission main shaft and two groups of backing rolls are installed are distributed in two blocks of side plates, thereby easy accessibility.Bearing block is with the side plate injection mo(u)lding, because it is formed in one, therefore the relative risk that produces out-of-roundness is reduced to minimum, thereby farthest guaranteed the installation accuracy of bearing, guaranteed the axiality of gear drive main shaft and two groups of backing rolls, both guarantee defeated yarn quality, prolonged the service life of bearing again.In bearing block, be provided with recess, elastic cushion block is housed in the recess, with the spring bearing outer ring, one for preventing that generation is loosening between outer ring and the bearing block, the 2nd, because bearing and supporting base are resilient engagement, therefore can offset heat that each part of bearing the produces phenomenon that rises, make the play of bearing be in optimum state for a long time, thereby greatly prolong the service life of bearing.

Description of drawings

Fig. 1 is a profile schematic perspective view of the present invention;

Fig. 2 opens perspective exploded view behind the shell for Fig. 1, and a shell is divided into three parts;

Fig. 3 is the further expanded view of Fig. 2;

Fig. 4 is the partial exploded view of Fig. 3;

Fig. 5 is the structural representation of bearing block;

Fig. 6 is a profile upward view of the present invention;

Fig. 7 is the partial schematic diagram of prior art;

Fig. 8 is the partial schematic diagram of another kind of prior art;

Fig. 9 is the local shell stereogram of Fig. 8, has a ball bearing of being installed by shell.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is described in further detail.

As Fig. 1～illustrated in Figure 6, be a preferred embodiment of invention.Referring to Fig. 1, Fig. 2, Fig. 3, present embodiment includes shell 1, be arranged on drive pulley 7, clutch 8 on the shell 1, be arranged on

first backing roll

22,22 in the middle of shell 1 housing ' and second backing roll 23,23 ' and be arranged on the conductive plate 9 and the retaining line bar (25,26) of shell 1 housing below; Shell 1 is divided into loam cake 4, cavity 5 and lower cover 6 by cut-off rule 2 and cut-off rule 3, and cavity 5 is combined by left plate 10 and right plate 11.Available press fastening type fastener or screw fastening device fuse between loam cake 4, cavity 5 and the lower cover 6, fuse with screw is fastening in the present embodiment.

Integrated injection molding has paired

bearing block

28a, 28b, 28c, 28d, 28e, 28f on left plate 10 and the right plate 11, a ball bearing 35 is housed respectively in each

bearing block

28a, 28b, 28c, 28d, 28e, the 28f, evenly form four recesses 34 on the circumferential wall of each bearing bearing

axle seat

28a, 28b, 28c, 28d, 28e, 28f, elastic cushion block 24 is housed in each recess, one is loosening for preventing bearing outer ring, two for offsetting heat between each part of the bearing phenomenon that rises, prolong bearing service life, referring to Fig. 4, Fig. 5.

Bearing block

28a, 28b are used for supporting transmission main shaft 12, passive bevel gear 27 and passive bevel gear 15 and active toothed wheel 16 are installed on the transmission main shaft 12, and wherein passive bevel gear 27 and passive bevel gear 15 are fixed on the transmission main shaft by holding screw movably;

Bearing block

28c, 28d are used for supporting and 19, two first backing rolls of the first passive toothed wheel 22,22 ' respectively are housed in first rotating shaft, 13, the first rotating shafts 13 are inserted into the end from first rotating shaft, 13 two ends, and fastening with trip bolt;

Bearing block

28e, 28f are used for supporting and 21, two second backing rolls of the second passive toothed wheel 23,23 ' respectively are housed in second rotating shaft, 14, the second rotating shafts 14 are inserted into the end from second rotating shaft, 14 two ends, and fastening with trip bolt.First driving belt 17 connects active toothed wheel 16 and first passive toothed wheel 19, the second driving belts 18 then connect the first passive toothed wheel 19 and the second passive toothed wheel 21.Drive pulley 7 by power transmission shaft 29 rotatably supports, these power transmission shaft 29 lower ends also with screw fastening one can with the active bevel gear 30 of passive bevel gear 27 or passive bevel gear 15 engagements, power transmission shaft 29 is upright in use.The work of whole yarn-feeding device is finished by such route: knitting machine driving belt (not shown) → drive pulley 7 → clutch 8 → power transmission shaft 29 → active bevel gear 30 →

passive bevel gear

15 or 27 → transmission main shaft 12 → active toothed wheel 16 → the first driving belts 17, second driving belt, 18 → the first passive toothed wheel 19, second passive toothed wheel 21 → the first rotating shafts 13, second rotating shaft, 14 → the first backing rolls 22,22 ', second backing roll 23,23 ' → for yarn tube (not shown).Referring to Fig. 1, Fig. 3.

Circuit arrangement is made up of contact pilotage 31, lead 32 and conductive plate 9, and contact pilotage is communicated with the host power supply (not shown), and the spider watcher (not shown) is articulated on the track of conductive plate 9.So just formed an electric loop.Retaining

line bar

25 and 26 also is articulated on the track of conductive plate 9, and it can move around along conductive plate 9, to regulate and the fixing cheese (not shown) of all size.Referring to Fig. 1, Fig. 6;

This device is articulated on the steel loop (not shown) of knitting machine by the groove 33 of loam cake 4 heads in use, and fastening with trip bolt 20.

Claims

1, a kind of elastic yarn feeding device, it has a shell (1), one and is used for shell (1) is articulated to the hanging mechanisms (20,33) on the knitting machine steel loop, at least one group of backing roll (22,23 that is used for defeated yarn that stretches out described shell (1); 22 ', 23 ') and one can drive one group of backing roll (22,23; 22 ', 23 ') at least one backing roll (22,23; 22 ', 23 ') transmission mechanism that rotates, every group of backing roll (22,23; 22 ', 23 ') by at least two backing rolls (22,23 that are parallel to each other and separate; 22 ', 23 ') constitute, it is characterized in that:

Described shell (1) is by at least two cut-off rules (2,3) be divided into a loam cake (4), at least one cavity (5) and a lower cover (6), described cavity (5) is put together by left plate (10) and right plate (11), described left plate (10) and right plate (11) are gone up one-body molded have paired bearing block (28a, 28b; 28c, 28d; 28e, 28f), bearing block (28a, 28b; 28c, 28d; 28e is equipped with ball bearing (35) in 28f), and close-fitting has rotating shaft (13,14), described backing roll (22,23 in the dead eye of ball bearing (35); 22 ', 23 ') form and can be bearing on the described shell (1) around the mode that its axis rotates by being fastenedly connected with described rotating shaft (13,14).

2, elastic yarn feeding device according to claim 1 is characterized in that described bearing block (28a, 28b; 28c, 28d; 28e forms recess (34) on circumferential wall 28f), the elastomeric pad (24) that is used for supporting described ball bearing (35) outer wall is housed in the recess (34).

3, elastic yarn feeding device according to claim 1 and 2, it is characterized in that the residing plane of described cut-off rule (2,3) respectively with described backing roll (22,23; 22 ', 23 ') parallel.

4, elastic yarn feeding device according to claim 1 and 2 is characterized in that described loam cake (4), cavity (5) and lower cover (6) are assembled into one by the press fastening type fastener.

5, elastic yarn feeding device according to claim 1 and 2 is characterized in that described loam cake (4), cavity (5) and lower cover (6) are assembled into one by screw fastening device.

6, elastic yarn feeding device according to claim 1 and 2, it is characterized in that described hanging mechanisms (20,33) comprise be arranged on described loam cake (4) head articulate groove (33) and trip bolt with matching (20).

7, elastic yarn feeding device according to claim 1 and 2, it is characterized in that described transmission mechanism is a gear drive, it comprises clutch (8), drive pulley (7), power transmission shaft (29), transmission main shaft (12), driving belt (17,18) and be installed in described rotating shaft (13,14) the passive toothed wheel (19,21) on; Wherein, driving belt (17,18) comprises first driving belt (17) and second driving belt (18), rotating shaft (13,14) comprise first rotating shaft (13) and second rotating shaft (14), passive toothed wheel (19,21) comprises the first passive toothed wheel (19) and the second passive toothed wheel (21); Described backing roll (22,23; 22 ', 23 ') comprise first backing roll (22,22 ') and second backing roll (23,23 '); Power transmission shaft (29) stretches out described loam cake (4), drive pulley (7) and clutch (8) are installed in the upper end, the lower end for good and all connects an initiatively bevel gear (30), transmission main shaft (12) is installed in the bearing block (28a that is positioned at described cavity (5), 28b) in the dead eye of Nei ball bearing (35), and and described backing roll (22,23; 22 ', 23 ') parallel to each other, initiatively bevel gear (30) meshes with the passive bevel gear (15) that is fixed on movably by holding screw on the transmission main shaft (12), the transmission main shaft (12) and first backing roll (22,22 ') promptly near the power transmission between the backing roll of transmission main shaft (12) by first driving belt (17), the first passive toothed wheel (19) that is installed in the active toothed wheel (16) on the transmission main shaft (12) and is installed in first rotating shaft (13) is finished, first backing roll (22,22 ') and second backing roll (23,23 ') between the power transmission finish in the same way by second driving belt (18).

8, elastic yarn feeding device according to claim 7 is characterized in that described transmission main shaft (12) is provided with two described passive bevel gears (15,27), so that change the direction of rotation of transmission main shaft (12).

9, elastic yarn feeding device according to claim 1 and 2, it is characterized in that also having the circuit arrangement that is used to install spider watcher, this circuit arrangement is made up of the contact pilotage that is used to contact host power supply (31), conductor wire (32) and a conductive plate (9) that is embedded with sheet metal, contact pilotage (31) is fixed in the loam cake (4) of described shell (1), conductive plate (9) is fastened in the lower cover (6) of described shell (1), contact pilotage (31) then uses conductor wire (32) to be connected with conductive plate (9), spider watcher is articulated on the conductive plate (9), forms electric loop.

10, elastic yarn feeding device according to claim 1 and 2 is characterized in that also comprising retaining line bar (25,26), and retaining line bar (25,26) is installed in one and is parallel to described backing roll (22,23; 22 ', 23 ') guide rail on.