CN1746364A - Upper cloth feeding device of sewing machine - Google Patents
Upper cloth feeding device of sewing machine Download PDFInfo
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- CN1746364A CN1746364A CN 200510099183 CN200510099183A CN1746364A CN 1746364 A CN1746364 A CN 1746364A CN 200510099183 CN200510099183 CN 200510099183 CN 200510099183 A CN200510099183 A CN 200510099183A CN 1746364 A CN1746364 A CN 1746364A
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- feeding device
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- sewing machine
- work feed
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Abstract
The cloth feeding device of the sewing machine simplifies the adjustment work of a feed distance of a material to be sewn and reduce the number of components. This upper feed device for the sewing machine is provided with an upper feed member 41 coming into contact with the material to be sewn on a needle plate 12 from the upper part and feeding it in a predetermined direction, a vertical movement mechanism 50 providing a driving force of a vertically reciprocating operation to the upper feed member, a horizontal movement mechanism providing a driving force of a feed-directional reciprocating operation to the upper feed member, and a support frame 70 detachably attached to a sewing machine arm part and supporting the vertical movement mechanism and the horizontal movement mechanism. The horizontal movement mechanism is provided with connecting parts 62 and 64 getting the driving force from a lower feed spindle 13 applying the driving force of the feed-directional reciprocating operation to the lower feed member of the lower feed device provided in a sewing machine bed part 21 in a sewing machine frame side.
Description
Technical field
The present invention relates to the upper cloth feeding device of the Sewing machines that can load and unload for sewing machine body.
Background technology
In upper cloth feeding device, have for the sewn object on the needle plate and carry from the throughput direction that the top edge joint touches edge regulation, for last work feed parts, pay and synchronous the driving up and down and reciprocal driving of eedle along throughput direction.And, between this upper cloth feeding device and the following cloth-feeding device that is being provided with below the needle plate, clamp sewn object by above-below direction, carry out the conveying of sewn object simultaneously.
In the past, for the common Sewing machines that only has following cloth feeding mechanism, be well known that a kind of conduct can be to the structure of above-mentioned upper cloth feeding device loading and unloading.This removably upper cloth feeding device have: can be connected by the driven shaft of belt on the output shaft of the sewing pusher side of going up the axle rotating drive of Sewing machines; The rotary driving force of driven shaft is converted to the knee-action mechanism of the reciprocal driving force of above-below direction and the work feed parts transmission that makes progress; The rotary driving force of driven shaft is converted to the horizontal balance mechanism of the reciprocal driving force of fore-and-aft direction and the work feed parts transmission that makes progress; The casing that can load and unload in the side of head of sewing machine portion when respectively constituting with support is above-mentioned.(for example, with reference to patent documentation 1)
As above-mentioned removably upper cloth feeding device, by axle transmission of drive force on the Sewing machines, the conveying of work feed parts in the knee-action of eedle, carrying out.
Patent documentation 1: the spy opens flat 5-337267 communique
Following cloth-feeding device is by transmission mechanism, obtains the reciprocal driving of cloth throughput direction by being configured in axis of rocking in the Sewing machines base plate.And, when descending the adjusting of cloth feed amount, use the known governor motion of the waving angle of regulating above-mentioned axis of rocking to regulate.
Yet in above-mentioned upper cloth feeding device in the past, the rotation of the output shaft by driven shaft transmission and last axle interlock drives horizontal balance mechanism.So, because for the down driving of the cloth feeding direction of cloth-feeding device, it drives path difference, so, under change during the conveying capacity of cloth-feeding device, the deviation with the conveying capacity of upper cloth feeding device can take place, the unfavorable condition that can not carry sewn object is reliably arranged.
In order to eliminate this unfavorable condition, be necessary also to be provided with the governor motion that the conveying capacity of the horizontal balance mechanism of upper cloth feeding device is regulated, but at this moment, the increase of production part number, bring the maximization and the weightization of device, simultaneously, when the conveying capacity of descending cloth-feeding device is regulated, must carry out the adjusting of the conveying capacity consistent to upper cloth feeding device, have and regulate the unfavorable condition that operation becomes very miscellaneous with it.
Summary of the invention
The objective of the invention is to reduce part count.And another object of the present invention is to make conveying capacity regulate the summary of operation.Further another purpose of the present invention is additional grade easy to maintenance that makes lubricant.
Following formation is adopted in technical scheme 1 described invention, and the upper cloth feeding device of Sewing machines comprises: following cloth pushing shaft, and it pays the driving force of throughput direction reciprocating action to the following work feed parts that are arranged on the following cloth-feeding device in the Sewing machines base plate; Last work feed parts, it is below the front end of head of sewing machine portion, and the sewn object from the top contact needle plate is also carried along prescribed direction; Knee-action mechanism, it pays the driving force of action up and down reciprocatingly to the described work feed parts of going up; Horizontal balance mechanism, it pays the driving force of throughput direction reciprocating action to described upward work feed parts; And bracing frame, it can be installed in described head of sewing machine portion with loading and unloading and support described knee-action mechanism and horizontal balance mechanism; Described horizontal balance mechanism has: drive connecting portion, it obtains driving force from described cloth pushing shaft down; Last cloth pushing shaft, it transmits swing movement from described driving connecting portion to the described work feed parts of going up.
In the above-described configuration, in head of sewing machine portion bracing frame is installed, horizontal balance mechanism drives connecting portion by it and is connected with the following cloth pushing shaft of the following cloth-feeding device of Sewing machines.
Thus, for the adjusting of its conveying capacity, when the waving angle of cloth pushing shaft was regulated under the following cloth-feeding device of sewing pusher side, the drive amount of being transmitted in the corresponding regulating quantity of upper cloth feeding device side also changed.
Technical scheme 2 described inventions are adopted following formation when constituting with technical scheme 1 described invention is same possessing: bracing frame, support near two places the both ends at least of going up cloth pushing shaft rotationally, and simultaneously, form this certain each support portion at least.
In the above-described configuration, shake driving force by driving connecting portion to the last cloth pushing shaft transmission of horizontal balance mechanism, this shakes driving force makes it descend the horizontal balance of work feed in the following cloth-feeding device of sewing pusher side, and then, with the reciprocal driving force and the upwards work feed parts transmission that driving force becomes throughput direction of shaking of last cloth pushing shaft.
And, for power is passed near the last work feed parts that are positioned at the head of sewing machine portion from the following cloth pushing shaft that is configured in the following cloth-feeding device in the Sewing machines base plate, transfer part is through in the vertical main body section of Sewing machines, shake driving force from the cloth pushing shaft transmission that makes progress of following cloth pushing shaft, last cloth pushing shaft must be near the driving force of shaking of the last work feed parts transmission throughput direction of the vertical main body section of the Sewing machines leading section that is positioned at head of sewing machine portion.That is, last cloth pushing shaft is set to the length near the almost total length of head of sewing machine portion, carries out transmission of power at its both ends.
And last cloth pushing shaft its both ends at least is supported on the bracing frame.The center line that each support portion of last cloth pushing shaft must be supported on respectively with last cloth pushing shaft is on the same axis.At this moment, if a plurality of support portions are made of different parts respectively, then owing to machining accuracy and each assembly precision of each support portion, the adjusting that is made as same axle will become difficult.
But, in foregoing invention,, only just each support portion can be adjusted on the same axle with its machining accuracy because each support portion is integrally formed in the bracing frame.
Technical scheme 3 described inventions possess and the same formation of technical scheme 2 described inventions, adopt following formation simultaneously: bracing frame produces the position of sliding at the parts with other and has the lubricating grease maintaining part of enclosing lubricating grease.
In the bracing frame of above-mentioned formation, supply with lubricating grease and be lubricated to the sliding position that grease-enclosed portion is set, can keep sliding action smoothly.
Technical scheme 4 described inventions possess and the same formation of technical scheme 2 described inventions, adopt following formation simultaneously: bracing frame, have two the location protuberance is installed, these two the location is installed and inserts respectively in two machining benchmark holes that are arranged on the Sewing machines casing with protuberance.
In the above-described configuration, two the location determines bracing frame with protuberance two machining benchmark holes of insertion installation site is installed, these two machining benchmark holes are to be used to determine to carry out on Sewing machines various this Working position or the machine directions that add man-hour.
Technical scheme 5 described inventions possess and the same formation of technical scheme 2 described inventions, adopt following formation simultaneously: bracing frame, commutative and can load and unload with the lid on the peristome that is installed in inner assembling usefulness, the peristome of this inside assembling usefulness is set on the Sewing machines casing.
Be arranged on the peristome of the inside assembling usefulness on the Sewing machines casing, be configured to be suitable for each assembling operation that constitutes of the Sewing machines of casing inside.So,, can easily carry out the transferring structure of the driving force of upper cloth feeding device is connected the structural operation of sewing pusher side by bracing frame being installed at the peristome of this inside assembling usefulness.
(invention effect)
Technical scheme 1 described invention, owing on bracing frame, loaded knee-action mechanism and horizontal balance mechanism, this bracing frame can load and unload in head of sewing machine portion, so can make common Sewing machines that only descends work feed and the generalization of Sewing machines casing, can reduce manufacturing cost, in addition, compare with in advance upper cloth feeding device being loaded in the Sewing machines casing, the assembling operation or the maintenance activity of upper cloth feeding device can be carried out in the outside of Sewing machines casing, the operation of its assembling and maintenance can be improved.
And then, owing to possess the driving connecting portion, this driving connecting portion obtains driving force from following cloth pushing shaft, this time cloth pushing shaft is that horizontal balance mechanism makes the feed dog of the following cloth-feeding device of sewing pusher side carry out level (throughput direction) action, so when the following cloth-feeding device of sewing pusher side carries out the adjusting operation of conveying capacity, from descending cloth pushing shaft the conveying capacity of upper cloth feeding device is reflected its regulating quantity by driving connecting portion, do not need the independently governor motion of conveying capacity, the miniaturization that can bring in the hope of minimizing owing to part count, lightweight and raising productivity, eliminate the conveying capacity of upper cloth feeding device simultaneously and regulate operation, can improve operation.
Technical scheme 2 described inventions, because it is integrally formed to support each support portion of the bracing frame of going up cloth pushing shaft, do not need when forming the support portion to carry out center line with each support portion and be located at adjusting on the same axle, can easily regulate operation in the stage of assembling by split.
So, obtain from following cloth-feeding device the work feed parts the conveying direction of action shake driving force, wherein, this time cloth-feeding device carries out the motion of the conveying direction of action of the following work feed in the Sewing machines base plate, and, even on transmitting along head of sewing machine portion because of vertical main body section that this shakes that driving force needs to grow during cloth pushing shaft from Sewing machines, also can easily carry out each support portion to center job, simultaneously, can guarantee the rotation smoothly of cloth pushing shaft on this.
Technical scheme 3 described inventions, because relatively Sewing machines can load and unload, so even when not being lubricated object in the Sewing machines, also can be by grease-enclosed portion is set, to the sliding position supplying lubricating oil, can keep by lubricated sliding action smoothly.
Technical scheme 4 described inventions, two the location is installed and is inserted in two machining benchmark holes and the installation site of decision bracing frame with protuberance, wherein, these two machining benchmark holes are to be used to determine to carry out on Sewing machines various this Working position or the machine directions that add man-hour, so can bracing frame be installed to the location that the Sewing machines casing carries out relative better precision.That is the alignment error that, can suppress bracing frame.
Technical scheme 5 described inventions, by the peristome that usefulness is installed in inside bracing frame is installed, wherein, the peristome that usefulness is installed in this inside is arranged on the Sewing machines casing, this Sewing machines casing is configured to be fit to each assembling operation that constitutes of Sewing machines, can easily carry out the transferring structure of the driving force of upper cloth feeding device is connected on the structure of sewing pusher side, can carry out operation smoothly.
And the installation on bracing frame of the installation constitution (for example being arranged on the screwed hole of the hold-down screw of head of sewing machine portion) of lid can being migrated does not need independently installation constitution, thereby can improve productivity.
Description of drawings
Fig. 1 is a part of abridged side view of the sewing machine for covering chain stitch of embodiments of the invention.
Fig. 2 is a side view of seeing sewing machine for covering chain stitch from the direction different with Fig. 1.
Fig. 3 is a side view of installing the sewing machine for covering chain stitch of the preceding state of cloth-feeding device.
Fig. 4 is key diagram expression belt pulley surrounding structure and that a part is cut open.
Fig. 5 is the stereogram of the connection status of expression belt pulley and flywheel.
Fig. 6 is the vertical view of the bracing frame that shows in Fig. 1.
Fig. 7 sees the key diagram of location with projection from the direction of insertion leading section.
Fig. 8 is the profile along the X-X line of Fig. 6.
Fig. 9 is the cutaway view along the joint construction rotary centerline.
Figure 10 is the stereogram of the structure of expression joint construction major part.
Among the figure: 10-sewing machine for covering chain stitch, 12-needle plate, cloth pushing shaft under the 13-, 20-Sewing machines casing, 23-head of sewing machine portion, 24-first peristome, 25-second peristome, 28,29-machining benchmark hole, the 31-belt pulley, the last axle of 32-, 33-belt housing, 34-flywheel, the 40-upper cloth feeding device, the last work feed parts of 41-, 50-knee-action mechanism, 60-horizontal balance mechanism, the last cloth pushing shaft of 61-, 62-divide the arm of force (driving connecting portion), 64-transmits connecting rod body (driving connecting portion), the 70-bracing frame, 72,73-installs location protuberance, 76-support portion (lubricating grease maintaining part), 77, the 78-support portion, the 80-joint construction, 81-one side's tectosome, 82-rotation support shaft, 83-the opposing party's tectosome, 84-connecting hole (holding section), 85-slot part (protuberance), 86-felt member (infused through both parts)
The specific embodiment
Below, the explanation detailed in addition to embodiments of the invention according to Fig. 1 to Figure 10.
Fig. 1 is sewing machine for covering chain stitch 10 a part of abridged stereograms of embodiments of the invention, and Fig. 2 is from seeing that with the different direction of Fig. 1 the stereogram of sewing machine for covering chain stitch 10, Fig. 3 are the stereograms that the sewing machine for covering chain stitch 10 of the state before the upper cloth feeding device 40 described later is installed.
Above-mentioned sewing machine for covering chain stitch 10 possesses: the needle drive 30 that makes the eedle knee-action; Carry following cloth-feeding device (omitting diagram) from the below along the throughput direction of regulation at the cloth of the sewn object of needle plate 12 mountings; Take in the Sewing machines casing 20 of needle drive 30 and following cloth-feeding device; For the upper cloth feeding device 40 that Sewing machines casing 20 can load and unload and the throughput direction along regulation is carried the cloth on the needle plate 12 from the top.
In the following description, direction is made as Z-direction vertically, the length direction of the chain-drive section described later 23 of the sewing machine for covering chain stitch 10 of the state of being horizontally disposed with is made as Y direction, and the direction parallel and vertical with Y direction with the plate face of not shown needle plate 12 is made as X-direction.In addition, be made as X-direction, Y direction and Z-direction orthogonal.In addition, above-mentioned upper cloth feeding device 40 and following cloth-feeding device all carry out the conveying of cloth along X-direction.
(Sewing machines casing)
The metal mo(u)lding that Sewing machines casing 20 is one of the forming, its inside is hollow, and above-mentioned needle drive 30 is housed in head of sewing machine portion 23, and cloth-feeding device down is housed in Sewing machines base plate 21.
And as shown in Figure 3, the side in head of sewing machine portion 23 is formed with first peristome 24 and second peristome 25, is formed with facial peristome 26 in face one side (front side of Fig. 3) of head of sewing machine portion 23.These peristomes the 24,25, the 26th are for what utilize when the assembling of the internal structure of sewing machine for covering chain stitch 10 or the maintenance, when assembling is finished, the lid 14 (with reference to Fig. 3) of blocking each first peristome 24, second peristome 25 and the lid of blocking facial peristome 26 (omitting diagram) are installed.
And, in the sewing machine for covering chain stitch 10 of present embodiment, replace blocking the lid 14 of first and second peristome 24,25, can behind the side of head of sewing machine portion 23, load onto cloth-feeding device 40.In addition, first opening 24 is formed on vertical main body section 22 tops of head of sewing machine portion 23.
And, around first peristome of the side of head of sewing machine portion 23 and second peristome 24,25, form plane 27, for this plane 27 mounting covers or upper cloth feeding device 40.This plane 27 is formed the plane parallel with Y-Z, and the both ends in the Y direction on this plane 27 are formed with machining benchmark hole 28,29 respectively.The depth direction in each machining benchmark hole 28,29 is vertical with respect to plane 27, that is, form along X-direction.These machining benchmark hole 28,29 when the installing hole of each component parts that is processed to form Sewing machines or mounting plane, other structure as benchmark.
That is, Sewing machines casing 20 is a mo(u)lding, at first, forms its whole prototype by casting, thereafter, for this prototype, uses all each installing holes that constitutes of processing unit (plant) formation or mounting plane, other structure.And, adding man-hour, adopt each machining benchmark hole 28,29 that Sewing machines casing 20 is installed on processing unit (plant), be made as the origin of coordinates of the position coordinates of processing by a certain side with each machining benchmark hole 28,29, the straight line that connects each machining benchmark hole 28,29 is made as the reference direction that is used to process, and decision is with respect to the configuration of each structure of Sewing machines casing 20.In other words, decide the configuration of each structure that is processed to form of Sewing machines casing 20 by each machining benchmark hole 28,29.And upper cloth feeding device 40 adopts these each machining benchmark holes 28,29 to be installed on the Sewing machines casing 20.About this point, will describe in detail in the back with the explanation of upper cloth feeding device 40.
(eedle and needle drive)
Eedle remains on the bottom of shank (omitting diagram) of needle drive 30 of below configuration of the leading section of head of sewing machine portion 23, by knee-action the cloth on the needle plate 12 is penetrated one by one.In addition, dispose not shown known rotary shuttle mechanism below needle plate 12, thus, suture that passes on eedle and bottom line twine and make.
Leading section in head of sewing machine portion 23 can reciprocally support above-mentioned shank in this Z-direction of state lower edge along Z-direction.
In addition, the inside in head of sewing machine portion 23, along supporting rotationally under the state of Y direction the axle 32.With the length that axle 32 on this is set at the almost total length that reaches this head of sewing machine portion 23, the one end is connected with shank by above-mentioned transmission mechanism, and the other end is given prominence to and is equipped with belt pulley 31 to the outside of Sewing machines casing 20.
Transmission mechanism as long as rotation motion can be changed into back and forth straight moving motion, is not particularly limited.For example, transmission mechanism is made of fixing shank abut on the shank that connects the connecting rod body of an end and the other end that is being connected this connecting rod body by eccentric cam at last axle 32.
Fig. 4 is the key diagram that the part of the formation on every side of expression belt pulley 31 cuts.Fig. 5 is the side view of the connection status of expression belt pulley 31 and flywheel 34.
What belt housing 33 covered the integral body of the outer peripheral face of belt pulley 31 almost and synchronous belt 35 passes through the zone and the integral body of the end face of the belt pulley side of the vertical main body section 22 of Sewing machines almost, and forming circular port 33a, this circular port 33a is used to expose the end face 31b that indulges main body section 22 opposite sides with the Sewing machines of belt pulley 31.That is, it is bigger slightly than the external diameter of belt pulley 31 that circular port 33a is set at its internal diameter, so that do not hinder the rotation of belt pulley 31.In Fig. 1 to Fig. 7, though shown the state on the end face 31b that flywheel 34 is assemblied in belt pulley 31, but in sewing machine for covering chain stitch 10, make thin thing or uniform thickness make thing the time, this flywheel 34 is as the manual operation unit setting littler than the circular port 33a diameter of belt housing 33.At this moment, owing to expose to the outside from belt housing 33, apply manual operation to belt pulley 31 and can make the eedle knee-action at the end face 31b of belt pulley 31 side flywheel 34.
And, by hold-down screw 34a flywheel 34 can be loaded and unloaded, the kind of sewn object that can be corresponding above-mentioned is installed aptly.And then, if prepare the multiple flywheel 34 vary in weight, can individually select suitable moment of inertia to each more kinds of sewn objects, can stablize and make smoothly various sewn objects.
(following cloth-feeding device)
Following cloth-feeding device possesses: the following work feed parts that haunt upward from the through hole that is arranged on the not shown slit-shaped on the needle plate 12; Following work feed parts are paid along the knee-action mechanism of the reciprocating action of Z-direction; Following work feed parts are paid along the horizontal balance mechanism of the reciprocating action of X-direction; With the governor motion of the reciprocal rotational angle range of the following cloth pushing shaft 13 (Fig. 1, Fig. 3) of regulating horizontal balance mechanism, these down each of cloth-feeding devices constitute the inside that is configured in Sewing machines base plate 21.
Following work feed parts possess from the feed dog of below contact cloth, haunt from the through hole that is arranged on the slit-shaped on the needle plate 12 by this feed dog and carry cloth.
This time work feed parts were paid along the reciprocating action of all directions of knee-action mechanism and horizontal balance mechanism and by the suitable position of regulating the reciprocating action of each actuating mechanism with all identical with the knee-action of the eedle cycle to carry out mutually along the elliptic motion on X-Z plane.When the track on the top of passing through this elliptic motion, with the slit work feed parts under the mode of exposing above the feed dog disposes from needle plate, this can realize along the cloth on the X-direction conveying needle plate 12 again.
Knee-action mechanism possesses: following work feed lifting shaft, and it carries out reciprocal rotational action in the angular range of regulation; Known offset crank mechanism, the rotary driving force of the not shown lower shaft that it will be by the motor of sewing machine rotating drive converts reciprocal rotating drive power and work feed lifting shaft transmission downwards to; Transmit arm, it is connected down on the work feed lifting shaft and carries out the action that fluctuates of leading section; With known transmission mechanism, its downward work feed parts transmit the moving up and down displacement of leading section, and the moving up and down displacement of this leading section is by the generation of shaking of transmitting arm.
Above-mentioned lower shaft and following work feed lifting shaft all rotatably are supported in the Sewing machines base plate 21 along Y direction, and above-mentioned lower shaft and work feed lifting shaft are down all set the length of the total length of the Y direction that is close to Sewing machines base plate 21 for.
Lower shaft to be being driven with the above-mentioned identical rotating speed of axle of going up, and offset crank mechanism and lower shaft are synchronously and the downward reciprocal rotational action of work feed lifting shaft transmission.
Transmit arm and extend setting from an end of following work feed lifting shaft along X-direction, its leading section fluctuates by the reciprocal rotation of following work feed lifting shaft.
The downward work feed parts of transmission mechanism transmit the displacement of the above-below direction that is formed by the leading section that transmits arm, allow mobile along X-direction of this time work feed parts simultaneously.Thus, following work feed parts can carry out the moving back and forth along X-direction of being paid by horizontal balance mechanism.
Horizontal balance mechanism possesses: following cloth pushing shaft 13, and it carries out reciprocal rotational action in the angular range of regulation; Transmit arm, it is connected down on the cloth pushing shaft 13, and leading section shakes action along X-direction; With the support link body of following work feed parts, it allows moving up and down of work feed parts down, the displacement of the X-direction of the leading section of the arm of the transmission of work feed parts transmission downwards simultaneously.
Above-mentioned down cloth pushing shaft 13 rotatably is supported in the Sewing machines base plate 21 along Y direction, and is configured to be close to the length of total length of the Y direction of Sewing machines base plate 21.
In addition, this time cloth pushing shaft 13 by regulating the governor motion of its reciprocal rotational angle range, is paid reciprocal rotating drive power by lower shaft.And this time cloth pushing shaft 13 also back and forth rotates synchronously with lower shaft.
Transmit arm and extend setting from an end of following cloth pushing shaft along Z-direction, its leading section shakes along X-direction by the reciprocal rotation of following cloth pushing shaft.
Support link body, one end are connected the leading section that transmits arm, and the other end is fastened on the transmission mechanism of above-mentioned knee-action mechanism and transmits moving up and down displacement.And, this support link body is configured to its length direction along X-direction, work feed parts under the centre position of its length direction keeps.Promptly, pay of the reciprocating action of support link body by transmitting arm along X-direction, simultaneously, transmission mechanism by knee-action mechanism is paid the action that moves up and down from the other end, the following work feed parts that keeping are transmitted the oval motion of resultant motion of the reciprocating action of the reciprocating action of X-direction and Z-direction.
Governor motion is following known formation: convert the rotary driving force of lower shaft to reciprocal rotating drive power and cloth pushing shaft 13 transmission downwards, the corresponding simultaneously not shown adjustment (adjusting) lever and the operation of adjusting knob that is arranged on the outside of Sewing machines casing, make up a plurality of connecting rod bodies and cam mechanism, these a plurality of connecting rod bodies and cam mechanism can carry out variable adjustment to the rotational angle range of downward cloth pushing shaft transmission.As mentioned above, in governor motion, by its adjustment (adjusting) lever of manual operation, changeable is by the rotational angle range of the reciprocal rotational action of descending cloth pushing shaft 13 to pay, and its result is by the cloth feed amount of descending the work feed parts can regulate cloth.
(integral body of upper cloth feeding device constitutes)
Upper cloth feeding device 40 possesses: go up work feed parts 41, it is carried from the top contact and along X-direction the cloth on the needle plate 12 below the front end of head of sewing machine portion 23; Knee-action mechanism 50, it pays the driving force of action up and down reciprocatingly to last work feed parts 41; Horizontal balance mechanism 60, it pays the driving force of X-direction reciprocating action to last work feed parts 41; With bracing frame 70, it can load and unload in the side of head of sewing machine portion 23 and support knee-action mechanism 50 and horizontal balance mechanism 60.
(upper cloth feeding device: bracing frame)
Fig. 6 is the vertical view of bracing frame 70, in the drawings the head of sewing machine portion 23 that bracing frame 70 is installed is analysed and observe.As mentioned above, in head of sewing machine portion 23, form the Y-Z plane,, replace lid and can install cloth-feeding device 40 for plane 27 along this Y-Z plane.For this reason, on bracing frame 70, form the smooth opposed faces 71 that closely contacts with plane 27.And, on the opposed faces 71 of bracing frame 70, being formed with two installation location protuberances 72,73 that insert two machining benchmark holes 28,29 respectively, these two machining benchmark holes 28,29 are formed on the plane 27 of head of sewing machine portion 23.Though bracing frame 70 is by casting integrated shaping, these location are other individual components with protuberance 72,73, and install from behind.
One side's location is cylindric with protuberance 73, is the common projection of having carried out chamfering at leading section, and its external diameter is set at and can inserts machining benchmark hole and size almost very close to each other.
The opposing party's location is with projection 72, with the location with protuberance 73 relatively, the shape difference of looking along the direction of insertion leading section.Fig. 7 sees the key diagram of location with protuberance 72 from the direction of insertion front end.As shown in Figure 7, the opposing party's location is with protuberance 72, is to having the external diameter that can seamlessly insert machining benchmark hole 28 and having carried out the columned projection of chamfering and carry out from its Y direction both sides along each two shape that the plane cuts inserting leading section.That is, the opposing party's location protuberance 72, only being formed, the width of Y direction produces gaps with respect to machining benchmark hole 28.Originally, the opposing party's location is also the same with protuberance 73 with a side location with protuberance 72, preferably for two sides of Y direction and Z-direction, do not produce the shape in gap with respect to machining benchmark hole 28, but at this moment, because with very high required precision two sides' location installation accuracy with 72,73 pairs of bracing frames 70 of protuberance, thus two location with the Y direction of the direction side by side of protuberance 72,73 on formation the gap of tolerance is arranged with protuberance 72 for the opposing party's location.
Bracing frame 70, and then (for example extend to head of sewing machine portion 23 front ends from vertical main body section 22 tops along head of sewing machine portion 23, the face of configuration shank etc.), with the configuration of corresponding first and second peristome 24,25, form peristome 74,75 through X-direction.Wherein, a side peristome 74 is equipped with the lid 74a (with reference to Fig. 2) that is used to cover from the outside.
And, on bracing frame 70, being provided with support portion 76 at an upper portion thereof, this support portion 76 is supported the last work feed lifting shaft 51 of knee-action described later mechanism 50 rotationally.Fig. 8 is the profile along the X-X line of Fig. 6.As shown in Figure 8, the support portion 76 of work feed lifting shaft 51 on this, it is inner to be hollow and the lubricating grease maintaining part that becomes inclosure lubricating grease, is provided with two bearing 76a, 76a.These two bearing 76a, 76a clamp this hollow region and along supporting work feed lifting shaft 51 under the state of Y direction rotationally.On this support portion 76, be formed for additional mouthful of 76b at an upper portion thereof to the inner repack with grease of hollow, fill the back installation at lubricating grease and block the lid 76c that this replenishes mouthful 76a.
And then, on bracing frame 70, below the support portion 76 of last work feed lifting shaft 51, be provided with two support portions 77,78, this support portion 77,78 cloth pushing shaft 61 in its two end supports horizontal balance mechanism 60.Each support portion 77,78, on bracing frame 70 separately to be the rib shape outstanding with an opposite side of opposed faces 71, in the through hole that connects this outstanding position along Y direction, support rotationally and go up cloth pushing shaft 61 by bearing (omitting diagram).In addition, first support portion 77 connects to the inboard of above-mentioned peristome 74 from the outside of bracing frame 70.
Because these support portions 77,78 all are arranged on the bracing frame 70 of integrally casting shaping, so, compare with the situation that parts branch independently is arranged respectively with each support portion 77,78, do not require the assembly precision between the individual components, only with the machining accuracy that is used to form support portion 77,78 on each support portion 77,78 with supported on the center of cloth pushing shaft 61 align (to the center).
(upper cloth feeding device: knee-action mechanism)
Knee-action mechanism 50 possesses: eccentric ratio 52, and it connects the one end by the eccentric cam of fixed equipment on last axle 32; Master arm 53, it is supported on an end of work feed lifting shaft 51 on bracing frame 70 upper supports, shakes driving force by the eccentric ratio input; Slave arm 54, it transmits by last work feed lifting shaft 51 and shakes driving force; Pin shape parts 55, it is work feed parts 41 on the bottom keeps; 3 connecting rod bodies 56, it has 3 connecting portions, in its upper end of feet shape parts 55 rotationally a bit, by in addition some input shake driving force, and will be in addition a bit as shaking the strong point; Transmit connecting rod body 57, it transmits to 3 connecting rod bodies 56 from slave arm 54 and shakes driving force; Support link body 58, it is supported on base end part on the bracing frame 70 rotationally, simultaneously, is shaking the strong point that shakes of 3 connecting rod bodies 56 of end portion supports; With pushing leaf spring 59, it pushes downwards usually by pin shape parts 55 and goes up work feed parts 41.
Knee-action mechanism 50 obtains shaking driving force from last axle 32, and the result that 3 connecting rod bodies 56 are shaken can make work feed parts 41 and last axle 32 synchronous and make 41 liftings of work feed parts by pin shape parts 55.
(upper cloth feeding device: horizontal balance mechanism)
Divide a part that the arm of force 62 has the reciprocal rotational power that will be paid by cloth pushing shaft 13 down to horizontal balance mechanism 60 component and the function transmitted.The driving force of being transmitted by minute arm of force 62 is passed on the fork parts 66, and then, as reciprocal driving force, be passed to the bottom that the pin shape parts 55 of work feed parts 41 are gone up in maintenance by connecting connecting rod body 67 along X-direction.
Thus, for last work feed parts 41, by knee-action mechanism 50, make it reciprocal driving force synchronous with Sewing machines and that pay above-below direction, make it to drive synchronously and pay the reciprocal driving force of X-direction with Sewing machines by following cloth pushing shaft 13 by horizontal balance mechanism 60.And, transmit the oval motion of the resultant motion of X-direction reciprocating actions and Z-direction reciprocating action to remaining on last work feed parts 41 on the pin shape parts 55.And in the zone of the bottom of oval motion, cloth contacts with last work feed parts 41, and cloth is carried along X-direction.
And, horizontal balance mechanism 60 is main by the inboard in the vertical main body section 22 of Sewing machines, the transmission connecting rod body 64 of crossing over the almost total length of its above-below direction and disposing and cross over the total length of its length direction almost and the last cloth pushing shaft 61 that disposes along head of sewing machine portion 23 carries out transmission of power from the following cloth pushing shaft 13 of the interior following cloth-feeding device of Sewing machines base plate 21 near the last work feed parts 41 the leading section that is positioned at head of sewing machine portion 23.
(upper cloth feeding device: the joint construction that uses axial region)
In addition, expose in the outside of Sewing machines casing 20 above-mentioned knee-action mechanism 50 and each rotating junction of horizontal balance mechanism 60, because the lubricating oil of supplying with in Sewing machines casing 20 can't be delivered to, so formation can be carried out the lubricated joint construction 80 as the lubricating oil of lubricant.
This joint construction 80 is arranged on the slave arm 54 of knee-action mechanism 50 and intermediate supports point portion, the fork parts 66 and connecting portion that is connected connecting rod body 67 and the connecting portion that is connected connecting rod body 67 and pin shape parts 55 of the fork parts 66 of the base end part that transmits connecting rod body 57 and connecting portion, support link body 58, horizontal balance mechanism 60.
Fig. 9 is the profile along the center line of the rotation of joint construction 80, and Figure 10 is the side view of the formation of expression major part.Shown in Fig. 9,10, joint construction 80 possesses: segmentation screw 82, and it is as the rotation support shaft of fixing on the tectosome 81 that connects into the side when rotatable a side with respect to the opposing party and setting; Connecting hole 84, it is used to pass the segmentation screw 82 on the tectosome 83 that is arranged on the opposing party; Slot part 85, its week around the periphery of segmentation screw 82 is provided with; With felt member 86, it is incorporated in the slot part 85 and as infused through both parts.In felt member 86, soaking into lubricating grease.
By this structure, the lubricating oil of felt member 86 can carry out the lubricated of sliding part under the situation of not replenishing for more time in slot part 85.
In addition, also can form from the outside filling mouth of make-up oil in connecting hole 84.Thus, under the situation of the operation of not taking out felt member 86, can be lubricated the adjunctive program of fat.
In addition, be soaked in the lubricating grease that is not limited only in the above-mentioned felt member, also can use lubricating oil.
(action specification of embodiment)
At first, the installation exercise for upper cloth feeding device 40 is illustrated.When carrying out the installation of upper cloth feeding device 40, at first, the lid of dismounting head of sewing machine portion 23, in the end of the vertical main body section side of Sewing machines of the following cloth pushing shaft 13 of cloth feeding mechanism down, the arm of force 62 in fixedly connected minute.Preferably on minute arm of force 62, connect in advance and transmit connecting rod body 64 and master arm 63.
Dividing the arm of force 62 be so-called excellent abut structure, fastening and minute arm of force 62 can be fixedly connected on this time cloth pushing shaft 13 by attachment screw under the state that passes time cloth pushing shaft 13.In addition, also can only make this minute arm of force 62, even when non-installation of upper cloth feeding device 40, also keep the state installed.
And, on the other hand, eccentric ratio 52 can be installed on the axle 32.The eccentric cam of this eccentric ratio 52 also can keep the state of installation when non-installation of upper cloth feeding device 40.
Then, other component parts except the eccentric ratio 52 of knee-action mechanism 50 are installed on bracing frame 70, with except the branch arm of force 62 of horizontal balance mechanism 60, transmit other component parts of connecting rod body 64 and master arm 63, under this state, bracing frame 70 is installed in the side of head of sewing machine portion 23.At this moment, the location is installed with protuberance 72,73 by inserting in each machining benchmark hole 28,29 relatively, 70 pairs of head of sewing machine portions of bracing frame 23 can be located.
And, bracing frame 70, the screwing hole, side of using the head of sewing machine portion 23 that is formed on the installation that is used to cover is carried out screw and is fixed in this head of sewing machine portion 23.
After bracing frame 70 is fixed, connect master arm 63 and last cloth pushing shaft 61.This master arm 63 also is so-called excellent abut structure, and is under the state of cloth pushing shaft 61, fastening by attachment screw on passing, and master arm 63 is fixedly connected on this on cloth pushing shaft 61.
And, also connect eccentric ratio 52 and master arm 53.These connect by the segmentation screw, and this segmentation screw can carry out position adjustments along the bearing of trend of master arm 53 and along slotted hole, and this slotted hole is provided with direction along the extension of master arm 53.By this position adjustments, can regulate the stroke up and down of work feed parts 41.
Above-mentioned respectively connect the end of job after, upper cloth feeding device 40 and knee-action mechanism 50 and horizontal balance mechanism 60 1 are in the state of the driving force that can transmit the sewing machine for covering chain stitch side together, driving by motor of sewing machine, synchronous with eedle, last work feed parts 41 and following work feed parts begin oval motion together, and this oval motion is used for along equidirectional conveying cloth.The horizontal balance of this moment, shaking by transmitting upwards cloth pushing shaft 61 transmission of connecting rod body 64 of following cloth pushing shaft 13 by shaking of last cloth pushing shaft 61, paid the motion of work feed parts 41 horizontal directions by each parts 65,66,67 of horizontal balance mechanism 60.
Thus, can carry cloth on one side from the above and below, by the knee-action of eedle make on one side.
(effect of embodiment)
In above-mentioned sewing machine for covering chain stitch 10, because upper cloth feeding device 40 relative head of sewing machine portions 23 can load and unload, therefore, can be before this upper cloth feeding device 40 be installed, finish the assembling of its knee-action mechanism 50 and horizontal balance mechanism 60 in the outside of narrow Sewing machines casing 20 or carry out maintenance activity, can improve operability.
And then, the horizontal balance mechanism 60 of upper cloth feeding device 40, divide the arm of force 62, transmission connecting rod body 64 owing to be equipped with, this minute, the arm of force 62 was as the driving connecting portion that obtains driving force from the following cloth pushing shaft 13 of cloth-feeding device down, so, when cloth-feeding device carries out the adjusting operation of conveying capacity down,, also can on the conveying capacity of upper cloth feeding device 40, reflect its regulating quantity by governor motion by following cloth pushing shaft 13.So, do not need the independently governor motion of conveying capacity, can improve productivity.In addition,, can eliminate and individually carry out necessity that conveying capacity is regulated operation, can improve operation about upper cloth feeding device 40.
And, the bracing frame 70 of upper cloth feeding device 40, comprise two support portions 77,78 of support going up cloth pushing shaft 61 and form as one by casting, so can avoid in influence with the assembly error of support portion 77,78 when separately forming, do not need the center line of each support portion 77,78 is made as the adjusting of same axle, can make the adjusting operation easy.
So, when carrying out transmission of power by the vertical main body section 22 of Sewing machines, even be close in this head of sewing machine portion 23 total lengths length on cloth pushing shaft 61 be necessary, also can easily carry out, and can guarantee the rotation smoothly of cloth pushing shaft 61 on this center operations.
In addition, owing on the bracing frame 70 of upper cloth feeding device 40, can enclose lubricating grease to the support portion 76 of last work feed lifting shaft 51, the work feed lifting shaft 51 that therefore can make progress is supplied with lubricating grease, and keeps by lubricated action smoothly.That is, shown in the present embodiment of the oil supply mechanism that can not dispose Sewing machines inside, even in having the upper cloth feeding device 40 of bracing frame 70 independently, also can keep lubricated fully.
And then, bracing frame 70, two installations that position are inserted in two machining benchmark holes 28,29 of head of sewing machine portion 23 sides locate the installation site of deciding bracing frame 70 with protuberance 72,73, therefore, head of sewing machine portion 23 can carry out the location and installation of better precision to bracing frame 70 relatively.
And, upper cloth feeding device 40, on the peristome 24,25 of the inside assembling usefulness that is arranged on head of sewing machine portion 23, bracing frame 70 is installed, by this installation, can easily connect the knee-action mechanism 50 or the horizontal balance mechanism 60 of sewing pusher side and upper cloth feeding device 40, can successfully operate.
In addition, the screwed hole of mounting cover can be migrated, not need the installation constitution of bracing frame 70 special uses, can improve productivity the installing of bracing frame 70.
And, in sewing machine for covering chain stitch 10, can be to the end face 31a loading and unloading flywheel 34 of the belt pulley 31 that exposes from belt housing 33, so exchange the situation of each belt pulley that varies in weight compares with the kind of corresponding sewn object, do not need the dismounting of belt housing 33 or the adjustment operation that belt pulley is installed synchronous belt, can easily carry out exchanging operation.Particularly, owing to flywheel is installed, can make its installation exercise the simple of simpler and installation method that become with hold-down screw 34a.
In addition, because flywheel 34 is installed in exposing on the end face 31b of belt pulley 31, do not need the field-strip of belt housing 33, so, can improve the productivity of sewing machine for covering chain stitch 10 integral body even use large diameter flywheel 34 to there is no need belt housing 33 is divided into two parts yet.
In addition, in sewing machine for covering chain stitch 10,, when loading and unloading belt housing 33, do not need to unload extension around the belt pulley 31 of belt with flywheel 34 one by one, can easily carry out the loading and unloading of belt housing 33 because flywheel 34 and belt pulley 31 are consubstantiality not.
In addition, when the dismounting belt,, can carry out the dismounting of belt from the Sewing machines outside, there is no need to unload belt pulley 31 with flywheel 34 one by one, can improve operability the belt pulley 31 that is fixed on the state on the main shaft 32 by unloading flywheel 34.
In upper cloth feeding device 40, the structure of exposing in the outside of Sewing machines casing 20 about the joint construction portion that rotates, owing to adopt joint construction 80, in this joint construction 80 felt member 86 is housed, this felt member 86 soaks into the lubricating oil as lubricant around segmentation screw 82, therefore, even during the supply of the lubricating oil in can not being subjected to Sewing machines casing 20, also can keep long lubricating oil and supply with.
In addition, about joint construction 80, also go for the rotating junction in the Sewing machines casing 20.
And the formation of above-mentioned upper cloth feeding device 40, flywheel 34 about joint construction 80, are not limited only to sewing machine for covering chain stitch, also go for the Sewing machines of all kinds.
Claims (5)
1. the upper cloth feeding device of a Sewing machines comprises:
Following cloth pushing shaft, it pays the driving force of throughput direction reciprocating action to the following work feed parts that are arranged on the following cloth-feeding device in the Sewing machines base plate;
Last work feed parts, it is below the front end of head of sewing machine portion, and the sewn object from the top contact needle plate is also carried along prescribed direction;
Knee-action mechanism, it pays the driving force of action up and down reciprocatingly to the described work feed parts of going up;
Horizontal balance mechanism, it pays the driving force of throughput direction reciprocating action to described upward work feed parts;
And bracing frame, it can be installed in described head of sewing machine portion with loading and unloading and support described knee-action mechanism and horizontal balance mechanism, it is characterized in that:
Described horizontal balance mechanism has:
Drive connecting portion, it obtains driving force from described cloth pushing shaft down;
Last cloth pushing shaft, it transmits swing movement from described driving connecting portion to the described work feed parts of going up.
2. the upper cloth feeding device of the described Sewing machines of claim 1 is characterized in that, support frame as described above supports near described two places of both ends at least of going up cloth pushing shaft rotationally, simultaneously, forms this certain each support portion at least.
3. the upper cloth feeding device of the described Sewing machines of claim 2 is characterized in that, support frame as described above produces the position of sliding at the parts with other and has the lubricating grease maintaining part of enclosing lubricating grease.
4. the upper cloth feeding device of the described Sewing machines of claim 2 is characterized in that, support frame as described above has two the location protuberance is installed, and these two the location is installed and inserts respectively in two machining benchmark holes that are arranged on the Sewing machines casing with protuberance.
5. the upper cloth feeding device of the described Sewing machines of claim 2 is characterized in that, support frame as described above, and commutative and can load and unload with the lid on the peristome that is installed in inner assembling usefulness, the peristome of this inside assembling usefulness is set on the described Sewing machines casing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004260324A JP2006075248A (en) | 2004-09-07 | 2004-09-07 | Upper feed device for sewing machine |
| JP2004260324 | 2004-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1746364A true CN1746364A (en) | 2006-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510099183 Pending CN1746364A (en) | 2004-09-07 | 2005-09-07 | Upper cloth feeding device of sewing machine |
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| Country | Link |
|---|---|
| JP (1) | JP2006075248A (en) |
| CN (1) | CN1746364A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296430A (en) * | 2010-06-28 | 2011-12-28 | Juki株式会社 | Loading and feeding mechanism for sewing machine |
| CN105887348A (en) * | 2016-06-23 | 2016-08-24 | 钟治超 | Feeding mechanism of sewing machine |
| CN113493964A (en) * | 2020-04-07 | 2021-10-12 | 杰克缝纫机股份有限公司 | Upper front-back driving mechanism for upper feeding teeth in sewing machine and sewing machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262101B (en) * | 2022-08-02 | 2023-05-30 | 南京苏美达服装技术研发有限公司 | Computer flush joint machine convenient to operation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0630148Y2 (en) * | 1987-05-09 | 1994-08-17 | ジューキ株式会社 | Sewing machine foot presser lifting device |
| IT226289Z2 (en) * | 1992-02-28 | 1997-06-02 | Rimoldi Srl | REMOVABLE UPPER TRANSPORT GROUP FOR SEWING MACHINES |
| JP3670029B2 (en) * | 1993-09-27 | 2005-07-13 | ジューキ株式会社 | Sewing machine feed mechanism |
| JP3529414B2 (en) * | 1993-12-13 | 2004-05-24 | ジューキ株式会社 | Vertical feed sewing machine |
| JP3594679B2 (en) * | 1995-02-08 | 2004-12-02 | ジューキ株式会社 | Cam exchange staggered sewing machine |
| JP3798857B2 (en) * | 1996-10-14 | 2006-07-19 | Ｊｕｋｉ株式会社 | Industrial sewing machine lubrication equipment |
| JP2004097423A (en) * | 2002-09-09 | 2004-04-02 | Juki Corp | Sewing machine |
-
2004
- 2004-09-07 JP JP2004260324A patent/JP2006075248A/en active Pending
-
2005
- 2005-09-07 CN CN 200510099183 patent/CN1746364A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296430A (en) * | 2010-06-28 | 2011-12-28 | Juki株式会社 | Loading and feeding mechanism for sewing machine |
| CN102296430B (en) * | 2010-06-28 | 2014-11-05 | Juki株式会社 | Loading and feeding mechanism for sewing machine |
| CN105887348A (en) * | 2016-06-23 | 2016-08-24 | 钟治超 | Feeding mechanism of sewing machine |
| CN113493964A (en) * | 2020-04-07 | 2021-10-12 | 杰克缝纫机股份有限公司 | Upper front-back driving mechanism for upper feeding teeth in sewing machine and sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006075248A (en) | 2006-03-23 |
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Open date: 20060315 |