CN102061575A - Cloth feeding device of sewing machine - Google Patents
Cloth feeding device of sewing machine Download PDFInfo
- Publication number
- CN102061575A CN102061575A CN2010105439784A CN201010543978A CN102061575A CN 102061575 A CN102061575 A CN 102061575A CN 2010105439784 A CN2010105439784 A CN 2010105439784A CN 201010543978 A CN201010543978 A CN 201010543978A CN 102061575 A CN102061575 A CN 102061575A
- Authority
- CN
- China
- Prior art keywords
- feeding
- feed
- adjusting
- butt
- cloth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention relates to a cloth feeding device of a sewing machine, capable of enlarging the setting range of the feeding distance of the cloth. The cloth feeding device includes a feed dog configured to feed a workpiece in a horizontal direction (X), a horizontal feeding shaft configured to rotate about its axis in a reciprocating manner to move the feed dog back and forth, a transmission mechanism configured to convert a rotation of a driving shaft of the sewing machine into the rotating motion of the horizontal feeding shaft such that an amount of rotation of the horizontal feeding shaft is adjustable, a feeding amount adjusting mechanism, and a forward-reverse switching means for switching the workpiece feeding direction between a forward feeding direction and a reverse feeding direction. The feeding amount adjusting mechanism has a feed adjusting dial operable to set a cloth feeding pitch, an abutting member configured to linearly move in accordance with a rotating operation of the feed adjusting dial, and a feed adjusting member having a cam face on which a distal end of the abutting member abuts. The feed adjusting member is coupled to the transmission mechanism and rotatably supported by a sewing machine frame. The cam face of the feed adjusting member is continuously smooth and flat.
Description
Technical field
The present invention relates to a kind of cloth feed apparatus of Sewing machines, it can set the cloth amount of feeding with the feeding tooth of the driving shaft of Sewing machines interlock.
Background technology
The cloth feed apparatus of existing sewing machine has: feed mechanism, and it applies the feed motion of being made up of the reciprocating action of the reciprocating action of above-below direction and horizontal direction to the feeding tooth; And amount of feeding governor motion, it makes the reciprocating action quantitative changeization of horizontal direction.
For existing cloth feed apparatus, the example that TOHKEMY 2007-202667 communique for example shown in Figure 12 is put down in writing.
Contrary feed bar axle 204 rotatably is supported on the sewing machine stand, and an end is fixed not shown contrary feed bar, can be rotated operation from the outside.Bar wrist 201 is fixed on the contrary feed bar axle 204, links via connecting rod 205 grades and transform component 206.
In addition, as the angle of inclination that makes this slot part 207, be the mechanism that the amount of feeding changes, has following structure.
As first adjusting portion, be provided with cam part 213, screw axis 214, adjustment disk 215.
Can be screwed into the screw axis 214 of adjusting with respect to sewing machine stand, with respect to this cam part 213, make the opposition side butt of leading section and cam surface 213A, with the axis direction advance and retreat amount that obtains by being screwed into of screw accordingly, the position of rotation of cam part 213 changes.All the time apply the elastic force that it is rotated in the mode that engages with screw axis 214 front ends to cam part 213.Adjustment disk 215 is fixed on the screw axis (butt body) 214, can pass through the rotary manipulation from the sewing machine stand outside, and this screw axis 214 is screwed into adjusting.
Promptly, by adjustment disk 215 is rotated operation, to screw axis 214 adjusting of advancing and retreat, thereby make cam part 213 rotations, the cam surface 213A that feeding adjusting pin 202 is engaged changes, and thus, the anglec of rotation of bar wrist 201 is changed, make the angle change of the slot part 207 of above-mentioned transform component 206 via connecting rod 205 grades, thereby adjust the direction of feed or the amount of feeding of feeding tooth F.
In addition, in the above-mentioned amount of feeding governor motion, have cam part 223, screw axis (butt body) 224 and adjustment disk 225 as second adjusting portion.Cam part 223 rotatably is supported on the sewing machine stand, forms the cam surface 223A of the V word shape identical with the cam surface 213A of cam part 213 in its bottom, and in addition, linking has the connecting rod 203 that links with not shown cylinder.Screw axis 224 and adjustment disk 225 have the structure identical with the screw axis 214 of above-mentioned first adjusting portion and adjustment disk 215.
The setting pitch of feed of second adjusting portion is littler than the setting pitch of feed of first adjusting portion, can be used to compress the amount of feeding of making and set.
In addition, when each adjusting portion is regulated action, if for example make adjustment disk 215 rotations, then corresponding with the advance and retreat of screw axis 214 and cam part 213 rotates, for example, if the butt position of feeding adjusting pin 202 changes in the scope of positive feeding with the inclined plane of cam surface 213, then with this butt change in location accordingly, 201 rotations of bar wrist, thus the positive direction amount of feeding of feeding tooth F is regulated.
In addition, if not shown contrary feed bar is operated, then contrary feed bar axle 204 rotations become and relative contrary feeding inclined plane butt with the feeding adjusting pin 202 of positive feeding inclined plane butt, carry out contrary feeding with pitch of feed.
Summary of the invention
Yet for nearest Sewing machines, the object variation of sewn object is accompanied therewith, for each amount of feeding, promptly make the size of spacing, also constantly requires bigger spacing.
But, because above-mentioned existing amount of feeding governor motion adopts the structure that the position of rotation of bar wrist 201 is changed by the clamped position between cam surface and the feeding adjusting pin 202, so in order to enlarge the adjusting width of spacing, the cam surface of V word shape is changed along the direction of sharply opening laterally, each inclined plane is prolonged enlarge.But if cam surface is sharply changed, then only by making the adjustment disk varied slightly, the amount of feeding will take place to change significantly, regulates thereby be difficult to carry out the trickle amount of feeding.In addition, if the size of cam part is enlarged, then need widely to be provided with the configuration space of the amount of feeding governor motion in the sewing machine stand.
On the other hand, for the feeding adjusting dish,, require to be configured in the front of the vertical body of Sewing machines portion from the angle of its operation, but owing to dispose the various structures of carrying out transmission of power in the inboard of vertical body portion, so be difficult to enlarge the configuration space of amount of feeding governor motion.
In addition, if expansion cam part, then owing to need dispose discretely with the feeding adjusting dish, thereby screw axis must be increased, its result, screw axis are easily on the direction with respect to its orthogonality of center shaft, be subjected to moment from cam part, there is the problem that produces the spacing mistake easily because of bending,, also is difficult to cam part is enlarged from above-mentioned angle.
The objective of the invention is to, a kind of cloth feed apparatus is provided, it can carry out trickle pitch of feed adjustment of the prior art, on one side and can avoid the expansion and the spacing mistake of configuration space, Yi Bian the setting range of pitch of feed is enlarged.
The invention of technical scheme 1 record is a kind of cloth feed apparatus of Sewing machines, and it has: the feeding tooth, and its peristome from needle plate haunts upward, makes the feeding of sewn object along continuous straight runs; The horizontal feed axle, it can be swung around axle, so that described feeding tooth is along the reciprocating motion of cloth direction of feed; Transmission mechanism, its rotation transformation with the driving shaft of Sewing machines is the oscillating motion of described horizontal feed axle, this transmission mechanism can be adjusted the oscillating quantity of described horizontal feed axle; Amount of feeding governor motion, its have can to the cloth pitch of feed carry out setting operation the feeding adjusting dish, advance and retreat butt body and feeding adjusting body mobile by the rotary manipulation of described feeding adjusting dish, this feeding adjusting body has the cam surface with the front end butt of described butt body, this feeding adjusting body and described transmission mechanism link, and be supported rotationally with respect to sewing machine stand; And positive and negative switch unit, its direction of feed with sewn object is switched between positive direction of feed and contrary direction of feed, it is characterized in that the described cam surface of described feeding adjusting body is made of continuous and level and smooth plane.
The invention of record is characterised in that in the technical scheme 2, the structure of the invention of the scheme that possesses skills 1 record, and, described transmission mechanism has: the first horizontal feed bar, its upper end links with the eccentric cam that is fixed on the driving shaft of described Sewing machines, moves up and down along with the rotation of described eccentric cam; The second horizontal feed bar, its bottom links via linkage and described horizontal feed axle, and the upper end rotatably is supported on the sewing machine stand; And transformation component, its motion with the described first horizontal feed bar is transmitted to the described second horizontal feed bar, and can adjust this transmission capacity.
The invention of record is characterised in that in the technical scheme 3, the structure of the invention of scheme that possesses skills 1 or 2 records, and described amount of feeding governor motion has: first and second adjusting portions, and it has described feeding adjusting dish, described butt body and described feeding adjusting body respectively; And the adjusting portion switch unit, it constitutes and makes the setting of the some feeding adjusting dishes in described first adjusting portion and described second adjusting portion become effective status.
The invention of technical scheme 4 records is characterised in that, the structure of the invention of the scheme that possesses skills 3 records, and, described amount of feeding governor motion is between described feeding adjusting dish and described butt body, have: changing unit, its spinning movement with described feeding adjusting dish change to the straight line shift action along the advance and retreat moving direction of described butt body; And speedup portion, it makes the spinning movement speedup of described feeding adjusting dish.
The invention of technical scheme 5 records is characterised in that, the structure of the invention of the scheme that possesses skills 2 records, and described transformation component has: a pair of binding connecting rod body, and it links the bottom of the described first horizontal feed bar and the pars intermedia of the described second horizontal feed bar; A pair of limiting rod body, itself and described binding connecting rod body equal in length, the binding end of upper end and the described first horizontal feed bar and each described binding connecting rod body links; And feeding conversion body, the bottom of itself and described each limiting rod body links, and utilizes the back shaft parallel with described driving shaft and rotatably supported.
The invention of technical scheme 6 is characterised in that, the structure of the scheme that possesses skills 5 records, and, has the transmission connecting rod body, one end and described feeding adjusting body link, the back shaft of the other end and described feeding conversion body links, and the rotation of described feeding adjusting body is directly transmitted to the back shaft of described feeding conversion body.
The effect of invention
According to the present invention, the smooth cam surface of feeding adjusting body and the leading section butt of butt body.Therefore, as shown in the prior art, under the situation of positive feeding being used and being disposed opposed to each other with V word shape against the inclined plane that feeding is used, for the adjusting width with pitch of feed enlarges and must the feeding adjusting body be enlarged along the length direction (the advance and retreat moving direction of butt body) on inclined plane, but under situation of the present invention, as long as will with the butt body over against cam surface enlarge, can suppress expansion to the advance and retreat moving direction of butt body.Therefore, for example, even in narrower vertical body portion, under the situation of configuration amount of feeding governor motion, also can easily guarantee its configuration space.In addition, even because the pitch of feed width is enlarged, also can avoid the feeding adjusting body to enlarge to the advance and retreat moving direction of butt body, so do not need the butt body is prolonged along its advance and retreat moving direction, can not make the influence of bending moment become big, therefore, can reduce the generation of the spacing mistake that the bending by the butt body causes.
In addition, because to make cam surface be continuous and level and smooth plane, so compare with being made as roughly the prior art of V word shape, the butt body needn't be restricted to and be less than or equal to the size that can enter between the V word.Therefore, compared with prior art can set the size of butt body bigger, its result can easily take the radius of curvature at the position of the butt body that will contact with cam surface to become the big countermeasure that waits the reply wearing and tearing, can improve the mar proof of butt body.
In addition, be provided with under the situation that to carry out the first and second different adjusting portions of scope that pitch of feed sets, by setting pitch of feed in advance respectively, thereby, also can promptly switching two kinds and set spacings even for example in making.
In addition, because under the situation that speedup portion is set, when the feeding adjusting dish surpasses the scope that rotates a circle, can't import under such constraint, can utilize speedup portion that the butt body is moved with wideer scope, so can easily enlarge the setting range of pitch of feed.
Description of drawings
Fig. 1 is the top oblique view of the cloth feed apparatus of expression working of an invention mode.
Fig. 2 is a top oblique view of observing the cloth feed apparatus of Fig. 1 from opposition side.
Fig. 3 is the side view of feed mechanism and amount of feeding governor motion.
Fig. 4 is the line chart of the transformation component of amount of feeding governor motion.
Fig. 5 is the front view of first adjusting portion and second adjusting portion.
Fig. 6 is the oblique view of first adjusting portion and second adjusting portion.
Fig. 7 is the profile along the X-Z plane at the center of passing through the butt body.
Fig. 8 is the oblique view of example that expression has first adjusting portion of spline device.
Fig. 9 is that expression utilizes the adjusting portion switch unit to make the setting spacing of first adjusting portion become the side view of effective state.
Figure 10 is that expression utilizes the adjusting portion switch unit to make the setting spacing of second adjusting portion become the side view of effective state.
Figure 11 is the profile of other examples of expression butt body.
Figure 12 is the exploded perspective view of the cloth feed apparatus of existing sewing machine.
The specific embodiment
(overall structure of working of an invention mode)
Below, based on Fig. 1 to Figure 10, describe embodiments of the present invention in detail.
In addition, in the following description, will be along the horizontal direction of cloth direction of feed as X-direction, will with the horizontal direction of its quadrature as Y direction, will with the vertical above-below direction of X-direction and the two quadrature of Y direction as Z-direction, and describe.
Sewing machines has: pedestal part, and it is to extending with the horizontal direction of cloth direction of feed quadrature; Vertical body portion, its cardinal extremity from pedestal part erects upward; And sewing machine stand, it has the arm that relatively extends to the pedestal part top from vertical body portion.Sewing machines also has cloth feed apparatus, and this cloth feed apparatus has feed mechanism 100 and amount of feeding governor motion 10.
(feed mechanism)
Above-mentioned feeding tooth 101, feeding platform 102, bottom and top feed axle 103, horizontal feed axle 104 are configured in the above-mentioned pedestal part, and bottom and top feed axle 103 and horizontal feed axle 104 are provided with abreast along Y direction.
In addition, eccentric cam 105, the first horizontal feed bar 106, the second horizontal feed bar 107 are configured in the above-mentioned vertical body portion.
(amount of feeding governor motion)
In Fig. 3, Fig. 4, amount of feeding governor motion 10 has: transformation component 20, and its motion with the first horizontal feed bar 106 is transmitted to the second horizontal feed bar 107, and can adjust transmission capacity (the cloth amount of feeding); First adjusting portion 40 and second adjusting portion 60, it at random carries out the setting input of pitch of feed by transformation component 20; And adjusting portion switch unit 80, it switches, so that the some states that can regulate that becomes in first adjusting portion 40 and second adjusting portion 60.
(transformation component)
The transformation component 20 that constitutes above-mentioned transmission mechanism has: a pair of binding connecting rod body 21,21, and it links the bottom of the first horizontal feed bar 106 and the pars intermedia of the second horizontal feed bar 107; A pair of limiting rod body 22,22, it is set at and links connecting rod body 21,21 equal in length, and the binding end of the upper end and the first horizontal feed bar 106 and binding connecting rod body 21,21 links; And feeding conversion body 23, it links the bottom of each limiting rod body 22,22.
The upper end of the upper end of the bottom of the first horizontal feed bar 106, two binding connecting rod bodies 21,21 and two limiting rod bodies 22,22, link with the same turning cylinder 24 along Y direction, their end is observed from Y direction and is moved along identical track.
In addition, the bottom of two binding connecting rod bodies 21,21 and the pars intermedia of the second horizontal feed axle 107 rotatably link by the back shaft 27 along Y direction.In addition, the bottom of two limiting rod bodies 22,22 is by along the back shaft 28 of Y direction, rotatably links with the bottom of feeding conversion body 23.
The back shaft 25 of feeding conversion body 23 by being located along the same line with above-mentioned turning cylinder 24, be supported on the sewing machine stand rotationally, by being that rotate at the center, thereby can regulate the reciprocal amount of spin that transmits to the second horizontal feed bar 107 arbitrarily with back shaft 25.
Promptly, if with back shaft 25 is that adjusting is rotated to feeding conversion body 23 in the center, so that above-mentioned back shaft 27 and back shaft 28 are arranged on the same straight line, be " 0 " to the action transmission capacity of the second horizontal feed bar 107 then from the first horizontal feed bar 106, pitch of feed is " 0 ".If the angle of feeding conversion body 23 that with pitch of feed is " 0 " is as the reference position, feeding conversion body 23 is rotated from the reference position to arrow F direction (Fig. 4), then more away from the reference position, the pitch of feed of positive feeding is big more, if rotate to arrow B direction (Fig. 4), then more away from the reference position, the pitch of feed of contrary feeding is big more.
(first adjusting portion)
In Fig. 5, Fig. 6, first adjusting portion 40 and second adjusting portion 60 all can with input operation accordingly, feeding conversion body 23 is carried out angular adjustment, be adjusted to pitch of feed arbitrarily.
On the back shaft 25 of above-mentioned feeding conversion body 23, be installed with feeding conversion wrist 26, can rotate around back shaft 25 with feeding conversion body 23.
First adjusting portion 40 has: feeding adjusting body 42, and its utilization is supported rotationally with respect to sewing machine stand along the back shaft 41 of Y direction; Transmit connecting rod body 43, it links this feeding adjusting body 42 and feeding conversion wrist 26, so that they rotate in linkage; Feeding adjusting dish 44, it is used to import the setting value of pitch of feed; Driving gear 46, its be fixed on the coaxial back shaft 45 of feeding adjusting dish 44 on, rotation links; Driven gear 48, it is supported on the back shaft 47 parallel with the back shaft 45 of driving gear 46, with driving gear 46 engagements; Tabular pedestal 49 (in Fig. 6, omitting diagram), it is along the Y-Z plane, and rotatably the supported axle 45,47; Butt body 50, its leading section and the cam surface 42a butt that is formed on the face side of feeding adjusting body 42; And guide portion 51, it is fixedly mounted on the rear side of pedestal 49, supports butt body 50 slidably along X-direction.
On feeding adjusting dish 44, the edge is whole circumference roughly, indicates the scale of the setting value that the expression pitch of feed is arranged, and the integral body of amount of feeding governor motion 10 is adjusted, pitch of feed is adjusted to the sign numerical value that is positioned at the uppermost position place by rotary manipulation.
The number of teeth of driving gear 46 is designed to 2 times of the number of teeth of driven gear 48, and with respect to the week rotation of feeding adjusting dish 44, driven gear 48 and back shaft 47 carry out the rotation of 2 weeks.That is, constitute speedup portion by driving gear 46 and driven gear 48.
On the outer peripheral face of the rear side of back shaft 47, form external screw thread, on butt body 50, form the internal thread that screws togather with back shaft 47.Butt body 50 integral body form prismatic block, and guide portion 51 supports this butt body 50 and it can be slided along X-direction, and works as the spline device of butt body 50.That is, if back shaft 47 is rotated with driven gear 48, the butt body 50 that then screws togather with it, being applied in along the rotating shaft direction of back shaft 47 is the straight line shift action of X-direction.That is, constitute changing unit by back shaft 47 and guide portion 51.In addition, if feeding adjusting dish 44 is rotated, then butt body 50 is advanced and retreat mobile along directions X.
In Fig. 7, the female hole 50a of the formation of butt body 50 by the center of butt body 50, runs through formation on the whole length of advance and retreat moving directions (X-direction).Therefore, compare with the situation of the mode that adopts leading section not run through, can make butt body 50 retreat the position that leading section (right part of Fig. 7) to back shaft 47 reaches the leading section limit of butt body 50, can obtain the amount of movement on the X-direction of butt body 50 more longways.
In addition, since for the upper and lower of the leading section (end relative) that becomes butt body 50 (with respect to a side and the opposition side thereof at the center of the leading section of butt body) with the cam surface 42a of feeding adjusting body 42 respectively with the structure of cam surface 42a butt, their section forms the roughly curved surface of circular arc respectively.
Feeding adjusting body 42 only forms a cam surface 42a continuously, and this cam surface 42a smoothly and parallel with Y direction at least at the rear of feeding adjusting body 42, utilizes the back shaft 41 that is fixed on sewing machine stand upper edge Y direction and supported rotationally.Transmit connecting rod body 43,, the opposition side end of an end and cam surface 42a is rotatably linked, and the other end and feeding conversion wrist 26 on the back shaft 25 that is fixed in support feeding conversion body 23 are rotatably linked with respect to feeding adjusting body 42.Its result, feeding adjusting body 42 links with feeding conversion body 23 linkage ground via transmitting connecting rod body 43, feeding conversion wrist 26, back shaft 25.In other words, by transmitting connecting rod body 43, the position of rotation of feeding adjusting body 42 is directly transmitted to feeding conversion body 23.
In addition, the cam surface 42a of feeding adjusting body 42 rotates around Y-axis with parallel with Y direction at least all the time state, thereby makes its variably.
In addition, the leading section of butt body 50, from feeding adjusting body 42 sides with the situation of observing along the sight line of X-direction under (under the situation of front view), up and down, about be shaped as symmetry, and above-mentioned back shaft 47 is positioned at the center in front view.In addition, in the following description, under the situation of the center line that mentions butt body 50, be illustrated in the line that passes through the center of butt body 50 in the front view along X-direction.Carry out the height of butt body 50 and back shaft 41 and regulate, so that the center line of the center line of above-mentioned butt body 50 and back shaft 41 is pitched with right angle intersection each other.
In addition, if make butt body 50 advance mobile to greatest extent to feeding adjusting body 42 sides, then cam surface 42a is pushed by the leading section of butt body 50, the two butt of upper and lower of the leading section of cam surface 42a and butt body 50, and become parallel plane erectility with Y-Z.In addition, cam surface 42a as noted above become with the advance and retreat direction quadrature of butt body 50 towards state under, feeding adjusting body 42 can be realized interlock with feeding conversion body 23 by transmitting connecting rod body 43, so that pitch of feed is 0.
In addition, if the leading section of butt body 50 separates with the cam surface 42a of feeding adjusting body 42, then can make cam surface 42a upward or the below tilt, under situation about tilting upward (in Fig. 3, turning clockwise), become state with the roughly arc sections butt of the bottom of the leading section of butt body 50 (with respect to a side at the leading section center of butt body 50), under the situation that cam surface 42a is tilted downwards, (in Fig. 3, be rotated counterclockwise), become state with the roughly arc sections butt of the top of the leading section of butt body 50 (with respect to the opposition side at the leading section center of butt body 50).In addition, on feeding conversion body 23, not shown spring is installed, this spring becomes 0 angle as the dead point with above-mentioned pitch of feed, begin pretension to be carried out in rotation from this dead point to clockwise direction or counter clockwise direction, if to clockwise direction feeding conversion body 23 is applied rotating operation so cross the dead point, then above-mentioned spring is to further carrying out pretension to clockwise rotation, apply rotating operation if cross the dead point to counter clockwise direction, then above-mentioned spring is to further carrying out pretension to anticlockwise rotation.Therefore, even butt body 50 moves to the direction of separating with cam surface 42a, also keep the top of leading section of butt body 50 or the state of bottom and cam surface 42a butt.
In addition, feeding adjusting body 42 can utilize the interlock of transmitting between connecting rod body 43 direct realizations and the feeding conversion body 23, so that under state with respect to the center line of above-mentioned butt body 50 and bottom butt, can regulate the pitch of feed of positive feeding, under state, can regulate the pitch of feed of contrary feeding with respect to the center line of above-mentioned butt body 50 and top butt.
In addition, on the back shaft 25 of feeding conversion body 23, link the actuator that is useful on the positive and negative positive and negative switch unit of conduct that switches direction of feed and (omit diagram, for example cylinder, o etc.), for example, if receive the positive and negative switching command of feeding, then and instruction correspondence, feeding conversion body 23 is controlled, it is rotated to F direction or B direction.Also can replace above-mentioned actuator, utilize manually operated changer lever, make feeding conversion body 23 carry out rotational action.
In addition, setting numerical value for the pitch of feed of feeding adjusting dish 44, under the situation of any in switching to positive feeding and contrary feeding, all can realize the interlock between feeding adjusting body 42 and the feeding conversion body 23, carry out positive feeding or contrary feeding in the mode of the pitch of feed that becomes this setting numerical value.
In addition, as noted above, owing to adopt upper and lower and cam surface 42a butt by the leading section that makes butt body 50, thereby determine the angle of feeding adjusting body 42 and feeding conversion body 23, the structure that pitch of feed is regulated, so need regulate the relative position relation up and down between feeding adjusting body 42 and the butt body 50, so that between pitch of feed shown in the feeding adjusting dish 44 and the actual pitch of feed that is formed in the stitching, do not produce error.Therefore, as shown in Figure 5, on said base 49, be formed with slotted hole 49a, in this slotted hole 49a, the cam pin 52 that rotatably is supported on the sewing machine stand be installed along Y direction.By making 52 rotations of above-mentioned cam pin, thereby make the top or the bottom butt of this cam pin 52 and slotted hole 49a inboard, pedestal is offset up and down, its result can regulate the relative position up and down between feeding adjusting body 42 and the butt body 50.
In addition, on first adjusting portion 40, be equipped with as shown in Figure 8: as the spring carrier arm portion 53 of position holding unit, it is used for the position of setting by the operation of feeding adjusting dish 44 is kept, so that it is not easy to change; And extension spring 54, it applies the brake force that is used to keep spring carrier arm portion 53.Above-mentioned spring carrier arm portion 53 is tabular, is formed for through hole 53a that back shaft 47 is inserted, the rear side in spring carrier arm portion 53, around through hole 53a with the end-face friction sliding-contact of driven gear 48.In addition, because extension spring 54 carries out pretension, so that the contact pressure between the end face of the back side of spring carrier arm portion 53 and driven gear 48 improves, so can utilize certain frictional force to keep the adjusting position of feeding adjusting dish 44.
In addition, be provided with spline device 53b integratedly in this spring carrier arm portion 53, it is formed with the slotted hole that is used to insert back shaft 45.In addition, on an end of back shaft 47, be formed with screwed hole, can utilize dog screw 55 that spring carrier arm portion 53 is fastening.According to said structure, if utilize dog screw 55 that spring carrier arm portion 53 is fastening integratedly with back shaft 47, then spline device 53b prevents the rotation of back shaft 47, therefore, can fix and can't change the adjusting position of feeding adjusting dish 44.In addition, under the situation that will remove stationary state, as long as dog screw 55 is pulled down.
(second adjusting portion)
Second adjusting portion 60, utilize back shaft 41 with first adjusting portion 40, feeding adjusting body 42, transmit connecting rod body 43, feeding adjusting dish 44, back shaft 45, driving gear 46, back shaft 47, driven gear 48, pedestal 49, butt body 50, guide portion 51, cam pin 52, spring carrier arm portion 53, extension spring 54, the structure that dog screw 55 is roughly the same, and have the back shaft 61 of identical function, feeding adjusting body 62, transmit connecting rod body 63, feeding adjusting dish 64, back shaft 65, driving gear 66, back shaft 67, driven gear 68, pedestal 69, butt body 70, guide portion 71, cam pin 72, spring carrier arm 73, extension spring 74, dog screw 75.
In addition, above-mentioned feeding adjusting body 62 and back shaft 61 thereof are supported by the feeding conversion connecting rod body 81 of adjusting portion switch unit 80 described later, and this point is different with the first above-mentioned adjusting portion 40.In addition, first adjusting portion 40 all can be carried out the setting of pitch of feed with second adjusting portion 60 in identical scope.
For the dependency structure except above-mentioned of second adjusting portion 60, since roughly the same with first adjusting portion 40, so omit repeat specification.
(adjusting portion switch unit)
In Fig. 9, Figure 10, adjusting portion switch unit 80 has: feeding conversion connecting rod body 81, and it supports feeding adjusting body 62; Back shaft 82, it supports feeding conversion connecting rod body 81, and this feeding conversion connecting rod body 81 can be rotated around Y-axis; As the cylinder 83 of actuator, it applies rotational action to feeding conversion connecting rod body 81; First retainer 84, it remains on the setting spacing that makes first adjusting portion 40 with feeding conversion connecting rod body 81 becomes on the effective position; Second retainer 85, feeding conversion connecting rod body 81 is remained on the setting spacing that makes second adjusting portion 60 to be become on the effective position; And position maintenance spring (omitting diagram), it carries out pretension, so that feeding conversion connecting rod body 81 is remained on first retainer 84.
In addition, with following situation as prerequisite, promptly, this adjusting portion switch unit 80, only compare under the situation of setting greatlyyer with the setting value of the pitch of feed of second adjusting portion 60, can carry out the switching of the pitch of feed setting value of first adjusting portion 40 and second adjusting portion 60 in the setting value of the pitch of feed of first adjusting portion 40.That is, under the situation of setting two kinds of pitch of feedes, set bigger value, set less value by second adjusting portion 60 by first adjusting portion 40.Thus, can switch each other two kinds of pitch of feedes.
Above-mentioned feeding conversion connecting rod body 81 is the bell crank shape, has: input wrist 81a, and it is center and linking with cylinder 83 with back shaft 82; And supporting wrist 81b, it supports feeding adjusting body 62.Because back shaft 82 is fixedly supported on the sewing machine stand, so its position is motionless.In addition, if utilize 83 pairs of inputs of cylinder wrist 81a to apply rotational action, then support wrist 81b and rotate with the angle identical with input wrist 81a.
In addition, input wrist 81a rotates between first retainer 84 and second retainer 85.
When input wrist 81a is positioned at the stop position at first retainer, 84 places, as shown in Figure 9, feeding conversion body 23 is as noted above, by pretension for to be 0 angle from pitch of feed away from direction rotate, therefore, the adjusting portion that the setting value of pitch of feed is bigger, i.e. the feeding adjusting body 42 and butt body 50 butts of first adjusting portion 40 reflect its setting value.
On the other hand, from the position of back shaft 82 to the extended support wrist of the butt body 70 sides 81b of second adjusting portion 60, keep out of the way to the direction of separating with butt body 70, be set at the feeding adjusting body 62 of second adjusting portion 60 of less pitch of feed, can't arrive butt body 70, and make the setting of the pitch of feed of second adjusting portion 60 become disarmed state.
In addition, by the driving of cylinder 83, the stop position of input wrist 81a to second retainer, 85 places rotated, as shown in figure 10, if input wrist 81a arrives second retainer 85, then stop operating the leading section butt of the bottom of cam surface 62a and butt body 70.
In addition, be accompanied by feeding conversion body 23 and set the direction rotation that spacing reduces to making, transmit direction that feeding adjusting body 42 that connecting rod body 43 makes first adjusting portion 40 reduces to pitch of feed, be that the upright direction of cam surface 42a is rotated, its result, the cam surface 42a of the feeding adjusting body 42 of first adjusting portion 40 separates with butt body 50.That is, it is invalid that the setting of first adjusting portion 40 becomes, and the setting of second adjusting portion 60 becomes effectively.
In addition, feeding adjusting body 62 utilizes the support wrist 81b that transmits connecting rod body 63 and feeding conversion connecting rod body 81, constitutes four joint connecting rods temporarily, utilizes the effect of this four joints connecting rod, switches to the end (Figure 10 is positive feeding) of the cam surface 62a of feeding adjusting body 62.
In addition, recovering that once more the setting of first adjusting portion 40 is become under the situation of effective state, utilizing cylinder 83 to make input wrist 81a turn to position with first retainer, 84 butts.Thus, the cam surface 62a of feeding adjusting body 62 is pushed by butt body 70, feeding adjusting body 62 is rotated, make feeding conversion body 23 rotate to the direction that pitch of feed increases, the cam surface 42a of the feeding adjusting body 42 of first adjusting portion 40 and butt body 50 butts, the cam surface 62a of second adjusting portion 60 separates with butt body 70, and feeding conversion body 23 stops at the angle place that becomes the pitch of feed of being set by first adjusting portion 40, and input wrist 81a arrives first retainer 84.That is, it is invalid that the setting of second adjusting portion 60 becomes, and the setting of first adjusting portion 40 is become effectively.
In addition, for above-mentioned change action,, also can carry out in the same manner feeding conversion body 23 being switched under the contrary state of feeding state.
As switching to contrary feeding, (omit diagram by actuator as positive and negative switch unit, for example cylinder, o etc.) driving, and as shown in figure 10, feeding adjusting body 62 is rotated to the W direction, make the upper end of cam surface 62a and the leading section butt of butt body 70, become contrary feeding state.
(action effect)
In above-mentioned amount of feeding governor motion 10, feeding adjusting body 42 (perhaps 62) carries out the positive anti-switching of feeding and the adjusting of pitch of feed thus along with feeding conversion body 23 rotates and rotates.In addition, carry out the rotational action of the feeding adjusting body 42 of pitch of feed when regulating (perhaps 62), apply with cam surface 42a (perhaps 62a) butt by making the butt body 50 that utilizes feeding adjusting dish 44 (perhaps 64) to advance and retreat mobile (perhaps 70).In addition, under the situation that any pitch of feed that aligns feeding and contrary feeding is regulated, all can under the state of the leading section butt of the smooth cam surface 42a (perhaps 62a) of feeding adjusting body 42 (perhaps 62) and butt body 50 (perhaps 70), carry out.
Therefore, as shown in the prior art, under the situation of positive feeding being used and being disposed opposed to each other with V word shape against the inclined plane that feeding is used, must the feeding adjusting body be enlarged along the length direction (the advance and retreat moving direction of butt body) on inclined plane for the adjusting width that enlarges pitch of feed, but in above-mentioned amount of feeding governor motion 10, as long as will with butt body 50 (perhaps 70) over against cam surface 42a (perhaps 62a) enlarge along its plane, can suppress the advance and retreat moving direction expansion of feeding adjusting body 42 (perhaps 62) to butt body 50 (perhaps 70).Therefore, for example, even in narrower vertical body portion, under the situation of configuration amount of feeding governor motion 10, also can easily guarantee its configuration space.In addition, even because the pitch of feed width is enlarged, also can avoid feeding adjusting body 42 (perhaps 62) to enlarge to the advance and retreat moving direction of butt body 50 (perhaps 70), so do not need to make butt body 50 (perhaps 70) to prolong along its advance and retreat moving direction, can not make the influence of bending moment become big, therefore, can reduce the generation of the spacing mistake that the bending by the butt body causes.
In addition, owing to make cam surface 42a (perhaps 62a) level and smooth, so be roughly the prior art of V word shape and compare, butt body 50 (perhaps 70) needn't be restricted to and be less than or equal to the size that can enter between the V word, therefore, compared with prior art can set the size of butt body 50 (perhaps 70) bigger, its result, can easily take the radius of curvature of the contact site of cam surface 42a (perhaps 62a) and butt body 50 (perhaps 70) is become the big countermeasure that waits reply to wear and tear, can improve the mar proof of butt body 50 (perhaps 70).
In addition, as noted above, if the leading section of butt body 50 (perhaps 70) is enlarged, then there is following problems, promptly, set the rotation of required angular range (be used for rotate to maximum spacing angular range) for feeding adjusting body 42 (perhaps 62) being applied pitch of feed from minimum spacing, the stroke of needed butt body 50 (perhaps 70) is elongated on X-direction, but because in above-mentioned amount of feeding governor motion 10, utilization is by 2 gears 46, the 48 speedup portions that constitute, the rotary manipulation amount of feeding adjusting dish 44 (perhaps 64) is increased doubly, so can be by the operational ton (be to the maximum and rotate a circle) that can utilize feeding adjusting dish 44 (perhaps 64) to regulate, apply move corresponding to butt body 50 (perhaps 70) with required path increment.
In addition, even under the situation that the shift motion of butt body 50 (perhaps 70) increases, owing to butt body 50 (perhaps 70) utilization is run through structure and is formed screwed hole, so also its total length can be utilized as transformation component, therefore, can on the advance and retreat moving direction of butt body 50 (perhaps 70), realize miniaturization, can avoid the maximization of device.
(other)
The structure of butt body 50,70 is not limited to above-mentioned structure.For example, also can be as shown in figure 11, in mode by the butt position between butt body 50 and the cam surface 42a (butt position under the situation of positive feeding and the butt position under the situation of feeding the two), along X-direction screwed hole 50b is set, leading section is set forms butt parts 50c, the 50c that circle, rearward end and screwed hole 50b screw togather.For above-mentioned butt parts 50c, can transfer to carry out position adjustments by making screw threads along the advance and retreat direction of butt body 50, can easily carry out the spacing of feeding adjusting dish 44 and regulate.In addition, in Figure 11, only show the example of first adjusting portion 40, but, also identical structure can be set for second adjusting portion 60.
In addition, the structure of feed mechanism 100 and transformation component 20 is not limited to above-mentioned structure.For example, at the feed mechanism of utilization as the use double fork lever 1 shown in Figure 4 of the TOHKEMY 2001-212387 communique of prior art, under the situation that the angle of inclination of the delivery regulator 13 that is used to adjust its reciprocating action direction is regulated, also can use level and smooth cam surface.
As shown in the example shown in Figure 2 of the TOHKEMY 2001-212387 communique of prior art, under the situation of using square slider that the amount of feeding is regulated, also can shown in present embodiment, use level and smooth cam surface for the parts of the direction of action of regulating square slider.
Claims (6)
1. the cloth feed apparatus of a Sewing machines, it has:
The feeding tooth, its peristome from needle plate haunts upward, makes the feeding of sewn object along continuous straight runs;
The horizontal feed axle, it can be swung around axle, so that described feeding tooth is along the reciprocating motion of cloth direction of feed;
Transmission mechanism, its rotation transformation with the driving shaft of Sewing machines is the oscillating motion of described horizontal feed axle, this transmission mechanism can be adjusted the oscillating quantity of described horizontal feed axle;
Amount of feeding governor motion, its have can to the cloth pitch of feed carry out setting operation the feeding adjusting dish, advance and retreat butt body and feeding adjusting body mobile by the rotary manipulation of described feeding adjusting dish, this feeding adjusting body has the cam surface with the front end butt of described butt body, this feeding adjusting body and described transmission mechanism link, and be supported rotationally with respect to sewing machine stand; And
Positive and negative switch unit, its direction of feed with sewn object is switched between positive direction of feed and contrary direction of feed,
It is characterized in that,
The described cam surface of described feeding adjusting body is made of continuous and level and smooth plane.
2. the cloth feed apparatus of Sewing machines according to claim 1 is characterized in that,
Described transmission mechanism has:
The first horizontal feed bar, its upper end links with the eccentric cam that is fixed on the driving shaft of described Sewing machines, moves up and down along with the rotation of described eccentric cam;
The second horizontal feed bar, its bottom links via linkage and described horizontal feed axle, and the upper end rotatably is supported on the sewing machine stand; And
Transformation component, its motion with the described first horizontal feed bar is transmitted to the described second horizontal feed bar, and can adjust this transmission capacity.
3. the cloth feed apparatus of Sewing machines according to claim 1 and 2 is characterized in that,
Described amount of feeding governor motion has:
First and second adjusting portions, it has described feeding adjusting dish, described butt body and described feeding adjusting body respectively; And
The adjusting portion switch unit, it constitutes and makes the setting of the some feeding adjusting dishes in described first adjusting portion and described second adjusting portion become effective status.
4. the cloth feed apparatus of Sewing machines according to claim 3 is characterized in that,
Described amount of feeding governor motion has between described feeding adjusting dish and described butt body:
Changing unit, its spinning movement with described feeding adjusting dish change to the straight line shift action along the advance and retreat moving direction of described butt body; And speedup portion, it makes the spinning movement speedup of described feeding adjusting dish.
5. the cloth feed apparatus of Sewing machines according to claim 2 is characterized in that,
Described transformation component has: a pair of binding connecting rod body, and it links the bottom of the described first horizontal feed bar and the pars intermedia of the described second horizontal feed bar; A pair of limiting rod body, itself and described binding connecting rod body equal in length, the binding end of upper end and the described first horizontal feed bar and each described binding connecting rod body links; And feeding conversion body, the bottom of itself and described each limiting rod body links, and utilizes the back shaft parallel with described driving shaft and rotatably supported.
6. the cloth feed apparatus of Sewing machines according to claim 5 is characterized in that,
Have the transmission connecting rod body, one end and described feeding adjusting body link, and the back shaft of the other end and described feeding conversion body links, and the rotation of described feeding adjusting body is directly transmitted to the back shaft of described feeding conversion body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009257658A JP2011101719A (en) | 2009-11-11 | 2009-11-11 | Feeding amount adjusting mechanism of sewing machine |
| JP2009-257658 | 2009-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102061575A true CN102061575A (en) | 2011-05-18 |
Family
ID=43570343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105439784A Pending CN102061575A (en) | 2009-11-11 | 2010-11-11 | Cloth feeding device of sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2325364A2 (en) |
| JP (1) | JP2011101719A (en) |
| CN (1) | CN102061575A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215756A (en) * | 2012-01-18 | 2013-07-24 | Juki株式会社 | Cloth feed adjusting device of sewing machine |
| CN103696150A (en) * | 2012-09-27 | 2014-04-02 | 兄弟工业株式会社 | Sewing machine |
| CN103215756B (en) * | 2012-01-18 | 2016-11-30 | Juki株式会社 | the cloth feeding adjusting device of sewing machine |
| CN111926471A (en) * | 2019-05-13 | 2020-11-13 | Juki株式会社 | Needle feed sewing machine |
| TWI764110B (en) * | 2019-06-20 | 2022-05-11 | 日商車樂美縫衣機股份有限公司 | Sewing machine |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2845939B1 (en) | 2013-09-05 | 2018-01-03 | JUKI Corporation | Sewing machine |
| DE102015207998B3 (en) * | 2015-04-30 | 2016-08-04 | Dürkopp Adler AG | Stitch length adjusting device for a sewing machine and sewing machine with such a stitch length adjusting device |
| TWI706063B (en) * | 2015-09-18 | 2020-10-01 | 日商重機股份有限公司 | Sewing machine |
| CN105155141B (en) * | 2015-09-30 | 2018-03-02 | 杰克缝纫机股份有限公司 | Dual-motors Driving feed mechanism and sewing machine |
| CN108532135B (en) * | 2018-05-28 | 2023-11-24 | 池州市旭豪机械有限公司 | Feeding wheel adjusting mechanism of sewing machine |
| TWI796518B (en) * | 2019-09-20 | 2023-03-21 | 億勤有限公司 | Feeding mechanism of sewing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4406505B2 (en) | 1999-11-22 | 2010-01-27 | Ｊｕｋｉ株式会社 | Sewing machine feed amount adjustment device |
| JP4823700B2 (en) | 2006-01-31 | 2011-11-24 | Ｊｕｋｉ株式会社 | sewing machine |
-
2009
- 2009-11-11 JP JP2009257658A patent/JP2011101719A/en active Pending
-
2010
- 2010-11-11 EP EP20100190803 patent/EP2325364A2/en not_active Withdrawn
- 2010-11-11 CN CN2010105439784A patent/CN102061575A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215756A (en) * | 2012-01-18 | 2013-07-24 | Juki株式会社 | Cloth feed adjusting device of sewing machine |
| CN103215756B (en) * | 2012-01-18 | 2016-11-30 | Juki株式会社 | the cloth feeding adjusting device of sewing machine |
| CN103696150A (en) * | 2012-09-27 | 2014-04-02 | 兄弟工业株式会社 | Sewing machine |
| CN103696150B (en) * | 2012-09-27 | 2015-11-18 | 兄弟工业株式会社 | Sewing machines |
| CN111926471A (en) * | 2019-05-13 | 2020-11-13 | Juki株式会社 | Needle feed sewing machine |
| CN111926471B (en) * | 2019-05-13 | 2023-09-05 | Juki株式会社 | Needle feeding sewing machine |
| TWI764110B (en) * | 2019-06-20 | 2022-05-11 | 日商車樂美縫衣機股份有限公司 | Sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2325364A2 (en) | 2011-05-25 |
| JP2011101719A (en) | 2011-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102061575A (en) | Cloth feeding device of sewing machine | |
| CN101864645B (en) | Cloth feeding device of sewing machine | |
| CN101012605B (en) | Cloth-feeding regulation device for sewing machine | |
| CN1702220B (en) | Feeder of sewing machine | |
| CN1760422B (en) | Fabric presser of sewing machine | |
| CN105088547A (en) | Dog lifting feeding mechanism of sewing machine and sewing machine | |
| CN105113152A (en) | Sewing machine | |
| CN101377036B (en) | Feed gear inclination adjusting device of sewing machine | |
| CN101285249B (en) | Feeding device of sewing machine | |
| CN101100788A (en) | Sewing machine | |
| JP2001159064A (en) | Needle punching device for fiber web | |
| CN103374797A (en) | Sewing machine | |
| JP2013070919A (en) | Sewing machine | |
| CN1858321A (en) | Pickup device of sewing machine | |
| CN104195752A (en) | Cloth feeding mechanism for overedger | |
| CN107761258A (en) | A kind of work feed governor motion of sewing machine | |
| CN1125896C (en) | Work-feeding means for sewing machine | |
| KR200386698Y1 (en) | Weft-plating guide driving devices of raschel crochet machine | |
| CN205011968U (en) | Sewing machine lifts tooth feeding mechanism and sewing machine | |
| CN207525443U (en) | A kind of work feed regulating mechanism of sewing machine | |
| CN101377041B (en) | Kettle contraposition device of sewing machine | |
| CN108193392B (en) | Sewing machine capable of adjusting cloth feeding and controlling stitch length | |
| JP2005279041A (en) | Device for vertically driving intermittent presser foot, and sewing machine including the same | |
| CN111926471B (en) | Needle feeding sewing machine | |
| CN213772481U (en) | Sewing machine needle feeding mechanism and sewing machine thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110518 |