CN1776066A - Needle stem mechanism of double-needle sewing machine - Google Patents
Needle stem mechanism of double-needle sewing machine Download PDFInfo
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- CN1776066A CN1776066A CN 200510125132 CN200510125132A CN1776066A CN 1776066 A CN1776066 A CN 1776066A CN 200510125132 CN200510125132 CN 200510125132 CN 200510125132 A CN200510125132 A CN 200510125132A CN 1776066 A CN1776066 A CN 1776066A
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- shank
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- abut
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Abstract
A needle bar mechanism of double-needle sewing machine contains a needle bar support body (40) which separately supports a pair of needle bars (20) in a way capable of up-and-down motion, a needle bar vertical movement mechanism (50) which moves each needle bar up and down using a needle bar skewback (51) held separately, a clutch mechanism (60) equipped with multiple input members (62, 66) which receive input of holding and loosening of each needle bar, a change member (81) which performs a change of holding and loosening of the needle bar by alternatively contacting each of the input members which perform rising and falling movements, and a grease feed means (91), which is prepared in the needle bar skewback and provides grease to the sliding part of the needle bar skewback and each of the needle bars. The needle bar mechanism of double-needle sewing machine can raise durability of the device.
Description
Technical field
The present invention relates to simultaneously or use selectively the needle bar mechanism of the two-needle sewing machine that two shanks make.
Background technology
Possess the needle bar mechanism of the two-needle sewing machine of the single needle hold function that moves up and down that can selectively stop a pair of shank, have: the shank supporter that can support a pair of shank respectively with moving up and down; Use is used for keeping the shank abut of a pair of shank respectively and shank up-down mechanism that each shank is moved up and down; Clutch mechanism, this closes device mechanism, carries out maintenance and releasing at each shank of shank abut, and has a plurality of input blocks of input of running power of the outside of the maintenance that accepts adaptive switched this each shank and releasing; And switching part, this switching part by the lifting action of clutch mechanism, can be docked on a certain input block selectively, and a certain switching (for example with reference to patent documentation 1) is carried out in the maintenance or the releasing of each shank.
The needle bar mechanism of above-mentioned two-needle sewing machine, two shanks that will be supported on the shank supporter by clutch mechanism remain on the shank abut.Clutch mechanism has and is used to the input block that makes each shank be in the input block of hold mode respectively and be used for the shank of hold mode is set at disarm state, and pays external force by each input block, is kept or is removed action by clutch mechanism.
Switching part by carrying out handover operation, when the shank abut carries out knee-action, can dock by a certain relatively input block, and by this butt joint, a certain input block is accepted external force, carries out the maintenance or the releasing of a certain shank.
Patent documentation 1: the spy opens flat 1-300990 communique.
But, because the needle bar mechanism of above-mentioned two-needle sewing machine is the mechanism of supporting needle rod, so it is configured in the face of Sewing machines machine frame.And, in the Sewing machines face,, carried out and suppressed the dry lubrication that lubricating oil uses in order to pollute to avoiding being sewed deposits yields.
On the other hand, clutch mechanism, have the clutch components that is fastened on each shank, make input block that clutch components moves along the engaging direction, restriction along the card claw stop that moves of the engaging direction of clutch components, be used to remove the input block etc. of the restriction state of card claw stop, each structure of clutch mechanism, switching part and each input block, what adopt is carburized surface hardened steel or tool steel, under the environment of dry lubrication, the maintenance of each shank or releasing meeting are impacted repeatedly, so be easy to generate fretting.
Summary of the invention
The objective of the invention is to be implemented in the raising of durability under the environment of dry lubrication.
The needle bar mechanism of the two-needle sewing machine of technical scheme 1, the formation below having adopted has: the shank supporter that can support a pair of shank respectively with moving up and down; Use the shank up-down mechanism that keeps the shank abut of a pair of shank respectively and each shank is moved up and down; Clutch mechanism, it carries out at the maintenance of described each shank of described shank abut and releasing, simultaneously, possess the maintenance of accept switching this each shank and releasing, from a plurality of input blocks of the input of the active force of outside; Switching part, it is docked on certain input block selectively by the lifting action of clutch mechanism, carries out the maintenance of each shank or any one switching of releasing; And possesses the single needle hold function that moves up and down that selectively stops a pair of shank; And possessing lubricating grease feeding mechanism, this mechanism is set on the shank abut, and is used for supplying with lubricating grease to the sliding position of this shank abut and described each shank.
In the above-described configuration, when being made by two eedles, two shanks that are supported on the shank supporter are maintained on the shank abut by clutch mechanism, and move up and down with its one.
And, when only a certain side's shank is made, operate by switching part, make it be docked at the input block of the hold mode that is used to remove shank.Its result, the shank that has been disengaged has stayed, and has only the shank that keeps together with the shank abut to move up and down, and slides so removed to produce between the shank that keeps and the shank abut.
At this moment, because the lubricating grease feeding mechanism that is arranged on the shank abut is lubricated the fat supply to above-mentioned sliding position, so the motion that can be well on.
In addition, though preferably on each shank, be provided for removing the input block of the hold mode of shank respectively, but for the disarm state from shank switches to hold mode, input block can be arranged on each shank, also can two shared input blocks of shank.Formation about following other is same reason.
Formation below the invention of technical scheme 2 has been adopted, lubricating grease feeding mechanism has the immersion oil parts, and these immersion oil parts are set on the shank abut in the mode with each shank sliding-contact, and soak to contain and maintain lubricating grease.
In the above-described configuration, be disengaged the relative shank abut of shank that keeps and slided, and be lubricated the fat supply to this sliding part by the immersion oil parts of sliding-contact.
Formation below the invention of technical scheme 3 has been adopted is provided with the lubricating grease feeding mechanism of supplying with lubricating grease on setting on the shank abut and at least one side at clutch mechanism and switching part.
Above-mentioned nitrogen treatment also can be any one method in gas salt bath nitriding, salt bath nitriding, the ionic nitriding.
In addition, high-carbon alloy steel is the iron that contains carbon with 0.7～2.1 percent ratio, other can contain Al, W, V, Mo etc.
In addition, though be not particularly limited, the preferred chromium amount is in the scope of 0.9～18 percent (please specify higher limit).
Formation below the invention of technical scheme 4 has been adopted, to switching part implement nitrogen treatment with the docking site of each input block at least, and adopt the high-carbon alloy steel that contains chromium.
When the maintenance of at every turn carrying out two pins respectively and releasing,,,, corrosion stability, mar proof have been improved so hardness uprises owing to adopted the high-carbon alloy steel that forms chromium nitride on its surface though the frequency that switching part and each input block collide is higher.
In addition, by supplying with lubricating grease, at least one side's of clutch mechanism and switching part corrosion stability, mar proof have been improved by lubricating grease feeding mechanism.
In addition, though preferably on each shank, be provided for removing the input block of the hold mode of shank respectively, but for the disarm state from shank switches to hold mode, input block also can be arranged on each shank, also can two shared input blocks of shank.Formation about following other is same reason.
The compound layer that is obtained by nitrogen treatment is known as so-called white cortex, and it has the higher but crisp characteristic of hardness.
This white cortex is in when collision, between the parent part and input block of switching part, so parent part one side of switching part be protected, thereby improved corrosion stability, mar proof.
In addition, though the thickness of above-mentioned white cortex is not particularly limited preferred 1[μ m] about or more than this.
Formation below the invention of technical scheme 5 has been adopted, to each input block at least with the docking site of switching part, adopt the high-carbon alloy steel of having implemented the particulate bead.
After the maintenance of carrying out two eedles or removing, though certain input block and switching part collide because its surface is a high-carbon alloy steel, so hardness is very high, in addition, by the particulate bead, be difficult to produce the fatigue that causes owing to repeatedly collision.In addition, even when the supply of the lubricant of accepting trace, in the small recess that forms by the particulate bead, keep lubricant, thereby reduce the fretting when colliding.
At this, the particulate bead is meant that so-called WPC handles (login trade mark).This particulate bead is to instigate than common peening to handle the particulate bulbec of minor diameter more to handle the processing of more speed collision on material than peening.Employed atomic diameter is at 20～100[μ m] about, as the particulate bulbec when using Ceramic Balls, preferably in the scope of above-mentioned diameter near little scope (20[μ m] near), when using the steel ball, preferably in the scope of above-mentioned diameter near big scope (100[μ m] near).The preferred 300[m/s of atomic jet velocity] more than, injecting time is not particularly limited.
In addition, though do not append special qualification, as an example, the countless recess that forms by the particulate bead, its Breadth Maximum (size of the maximum of the recess that can measure, but except the size of depth direction) is 0.1～10.0[μ m], more preferably at 1.0～2.0[μ m] scope in, in unit are, account for the ideal of maximum area ratio, and preferably its area than more than percent 50.
Formation below the invention of technical scheme 6 has been adopted, make switching part, with the case hardness of the docking site of each input block, than each input block, with the docking site height of switching part.
In the above-described configuration, because switching part one side is than the frequency height of each input block collision, so at least at its colliding part, the hardness of switching part is set for than input block height, thereby further improve the mar proof of switching part, make the balance of durability further improve.
Formation below the invention of technical scheme 7 has been adopted, each input block at least with the docking site of switching part, adopt the carburized surface hardened steel of having implemented the particulate bead.
After the maintenance of carrying out two eedles or removing, though certain input block and switching part collide, but since be its surface for having implemented the carburized surface hardened steel of particulate bead, so hardness is very high, be difficult to produce the fatigue that causes owing to repeatedly collision.In addition, after the supply of the lubricant of accepting trace, in the small recess that forms by the particulate bead, keep lubricant, thereby reduce the fretting when colliding.
In addition, by supplying with lubricating grease, at least one side's of clutch mechanism and switching part corrosion stability, mar proof have been improved by lubricating grease feeding mechanism.
(invention effect)
The invention of technical scheme 1 when shank is in dormant state, shank and the slip of shank abut, can be supplied with lubricating grease to sliding position, when removing the maintenance of shank, can successfully carry out moving up and down of shank abut.So, can successfully carry out making of Sewing machines.
In addition, because lubricating grease feeding mechanism is set on the shank abut, so, by between shank and the shank abut only when producing action relatively (when removing the maintenance of shank) be lubricated fat and supply with, only when producing slip, supply with, required minimal supply can be carried out thus, the consumption of lubricating grease can be reduced.
The invention of technical scheme 2, because lubricating grease feeding mechanism is for immersing the immersion oil parts that kept lubricating grease, thus, only by making these parts in advance and answering sliding of fuel feeding just can supply with lubricating grease everywhere, do not need to store lubricating grease, do not need to be provided with the path that moves it to donor site yet, thus simplification that can implementation structure.So, can improve the productivity of needle bar mechanism.
The invention of technical scheme 3 in addition, by supplying with lubricating grease by lubricating grease feeding mechanism, has improved at least one side's of clutch mechanism and switching part corrosion stability, mar proof.
The invention of technical scheme 4, produce the colliding part of the switching part of collision when the maintenance by being formed on each shank by the high-carbon alloy steel that contains chromium that has carried out nitrogen treatment and the switching of releasing, compared with the past thus, hardness uprises, and has improved corrosion stability, mar proof simultaneously.So by the variation of these characteristics, relatively the fretting that is caused by repeatedly collision can improve durability, through also keeping normal operation for a long time.In addition; because the colliding part at switching part forms the white cortex that possesses the high and crisp characteristic of hardness; so when collision; between the parent part and input block of switching part; white cortex protection parent part; even under the environment of dry lubrication, also can further improve durability, even also can keep normal operation through the longer time to fretting.
The invention of technical scheme 5, adopt the high-carbon alloy steel of having implemented the particulate bead owing to produce the colliding part of the input block of collision when carrying out the switching of the maintenance of certain shank or releasing, so compared with the past, hardness uprises, corrosion stability, mar proof have been improved simultaneously.So by the variation of these characteristics, even under the environment of lubricated inadequate dry lubrication, the fretting to being caused by repeatedly collision can improve durability, even through also keeping normal operation for a long time.
The invention of technical scheme 6, position for its collision at least of the higher switching part of the frequency that bumps than each input block, set hardness height for than input block, thereby further improved the mar proof of switching part, and improved good durability balance, so for mechanism, can improve whole durability, even through also keeping normal operation for more time.
The invention of technical scheme 7, because the colliding part to the input block that produces collision when the switching of the maintenance of carrying out certain shank or releasing adopts the carburized surface hardened steel of having implemented the particulate bead, so compared with the past, hardness uprises, fatigue resistance, mar proof have been improved simultaneously.So by the variation of these characteristics, to by repeatedly collision and the fretting that causes, durability is improved, even through also keeping normal operation for a long time.In addition, by supplying with lubricating grease, at least one side's of clutch mechanism and switching part corrosion stability, mar proof have been improved by lubricating grease feeding mechanism.
Thus, under the environment of dry lubrication, what can guarantee Sewing machines makes action smoothly.
Description of drawings
Fig. 1 is the front view of needle bar mechanism of the two-needle sewing machine of embodiments of the present invention, and it has represented to be in the state of upper dead center position under the crosspointer hold mode.
Fig. 2 (A) is the side view of shank, and Fig. 2 (B) is a front view.
Fig. 3 is the front view of the needle bar mechanism of two-needle sewing machine, and it has represented to be in the state of lower dead point position under the crosspointer hold mode.
Fig. 4 be the side in the operating state that passes through Fig. 1 of needle bar mechanism shank center line, along the cutaway view of the section on X-Z plane.
Fig. 5 is the stereogram of clutch components.
Fig. 6 is the stereogram of limiting component.
Fig. 7 (A) is the vertical view that the shank abut of immersion oil parts is housed, and Fig. 7 (B) is the vertical view that the shank abut of immersion oil parts is housed.
Fig. 8 is expression with respect to the sample of being made by various materials, the collision of being made by the same material is collided under identical conditions with sheet and the result's of the wear extent of this moment figure relatively.
Fig. 9 is the front view of the needle bar mechanism of two-needle sewing machine, and the state after a side the hold mode of shank has just been removed in its expression.
Figure 10 is the center line of the shank of the side in the operating state that passes through Fig. 9 of needle bar mechanism, along the cutaway view of the section on X-Z plane.
Figure 11 is the front view of the needle bar mechanism of two-needle sewing machine, the hold mode of its expression releasing one side's shank and the state that moves to bottom dead centre.
Among the figure: the needle bar mechanism of 10-two-needle sewing machine, 20-shank, 40-shank carriage (shank supporter), 50-shank up-down mechanism, 51-shank abut, 60-clutch mechanism, the 61-clutch components, 62-follower link (input block), 64-card claw stop, 66-removes pin (input block), the 80-switching mechanism, the 81-switching part, 81a-docks projection, 91-immersion oil parts.
The specific embodiment
(integral body of embodiments of the present invention constitutes)
Below, according to Fig. 1 to Figure 11, embodiments of the present invention are at length described.
Fig. 1 is the front view of needle bar mechanism 10 of the two-needle sewing machine of embodiments of the present invention, and Fig. 2 (A) is the side view that the part of shank 20 has been omitted, and Fig. 2 (B) is a front view, the front view of the needle bar mechanism 10 when Fig. 3 has represented that shank descends.
Two-needle sewing machine has following mechanism etc. and makes required general various mechanisms, that is, each that will be used to make constitutes to hold and remain on inner sewing machine frame; The motor of sewing machine that drives power source up and down as two eedles of the needle bar mechanism 10 that will illustrate below; Rotary shuttle mechanism or running-on mechanism, it is caught the upper thread that passes and twines bottom line below needle plate on each eedle that moves up and down; Upper thread is paid the line governor motion of tension force; The thread take-up tension lever mechanism of the lifting of carrying out upper thread synchronously with moving up and down of eedle; Cut off the shut-off mechanism of upper thread or bottom line.These mechanisms are except needle bar mechanism 10, other be well-known structure, so do not make diagram and describe in detail.
The needle bar mechanism 10 of two-needle sewing machine is set in the face of front end of not shown chain-drive section of two-needle sewing machine, and make keep two eedles (diagram is omitted) respectively independently a pair of shank 20 simultaneously or move up and down selectively.
In the following description, vertical above-below direction is made as Z-direction, to be made as Y direction at the length direction of the chain-drive section of the two-needle sewing machine of the state of horizontal plane setting, the direction parallel and vertical with Y direction with the plate face of not shown needle plate will be made as X-direction.In addition, X-direction, Y direction and Z-direction are vertical mutually.
The needle bar mechanism 10 of two-needle sewing machine possesses: be formed with separately first connecting hole 21 and a pair of shank 20 of second connecting hole 22; As the shank carriage 40 that can support the shank supporter of each shank 20 respectively with moving up and down; Use the shank up-down mechanism 50 that keeps the shank abut 51 of a pair of shank 20 respectively and each shank 20 is moved up and down; Clutch mechanism 60, this clutch mechanism 60 uses a pair of clutch components 61 and can be selectively the maintenance of the shank separately 20 of shank abut 51 be switched to hold mode and releasing state, and above-mentioned a pair of clutch components 61 can insert front end or break away from first connecting hole 21 of each shank 20; Position-limit mechanism 70, this position-limit mechanism 70 uses limiting component 71 and is maintained on the shank carriage 40, and above-mentioned limiting component 71 can insert front end or break away from second connecting hole 22 that hold mode is become the shank 20 of disarm state by clutch mechanism 60; Select the hold mode of a certain shank 20 and switch clutch mechanism 60 and the switching mechanism 80 of the state of releasing by artificial input operation; Be set on the shank abut 51 and the sliding position between this shank abut 51 and each shank 20 is supplied with the immersion oil parts 91 as lubricating grease feeding mechanism of lubricating grease.
(shank)
Each shank 20 is supported for state along Z-direction usually by shank carriage 40, when carrying out balancing point, by shank carriage 40, in the roughly centre position of the length direction of each shank 20, is that the center is paid revolution and shaken action with the axle along Y direction.Carrying out this when shaking, each shank 20, its upper and lower end parts is shaken along X-direction separately.
As shown in the figure, each shank 20 is to have formed the clava of tabular surface 23 on the part of section for the side face of circular pole, and carries out the maintenance of not shown eedle in its bottom.
Along under the state of Z-direction supporting needle rod 20, tabular surface 23 is supported on the shank carriage 40, so that it becomes along the state on Y-Z plane.On the face of this tabular surface 23,, be formed with slot part 24 along this length direction in the centre position of Z-direction.
In addition, on the plane of tabular surface 23, near the bottom of slot part 24 and upper end, according to being formed with first connecting hole 21 and second connecting hole 22 with the overlapping mode of this slot part 24.
First connecting hole 21 is formed rectangle according to the front end shape of clutch components 61, so that the leading section of clutch components 61 can insert.This oblong-shaped, according to roughly rectangular outstanding this situation of the leading section of clutch components 61, the length of rectangular long limit and minor face is set to horizontal wide and vertical wide bigger than the essentially rectangular leading section of separately clutch components 61.
Second connecting hole 22 is positioned at the top position of first connecting hole 21, and according to the shape of the leading section of limiting component 71 described later, be formed in to be rectangle in the front view, and in side view semicircle shape.
In the inside of slot part 24, swing plate 25 can joltily be installed along the length direction of this slot part 24.This swing plate 25 is supported on along on the back shaft of Y direction in the centre position of first connecting hole 21 and second connecting hole 22, and by shaking, move along X-direction at its both ends.That is, the depth direction along each connecting hole 21,22 moves in the inside of first connecting hole 21 and second connecting hole 22 respectively an end of swing plate 25 and the other end.
In addition, swing plate 25 is formed following shape: when the one end is pushed near the deep of first connecting hole 21, the other end is pushed out to tabular surface 23 in second connecting hole 22, and when its other end was pushed near the degree of depth of second connecting hole 22, an end was pushed out to tabular surface 23 in first connecting hole 21.
Promptly, for same shank 20, when clutch components 61 is inserted into first connecting hole 21, has inserted the limiting component 71 of connecting hole 22 and released by swing plate 25, when limiting component 71 is inserted into second connecting hole 22, has inserted the clutch components 61 of first connecting hole 21 and released by swing plate 25.
In addition, above-mentioned shank 20 engages with clutch mechanism 60 and is maintained on the shank abut 51 by its first connecting hole 21 when moving up and down.On the other hand, limiting in order to carry out single needle to make when moving up and down, clutch mechanism 60 is disengaged, and engages with position-limit mechanism 70 and be maintained on the shank carriage 40 by second connecting hole 22.
Like this, each shank 20 is maintained in a certain mechanism of clutch mechanism 60 or position-limit mechanism 70 usually.
(shank carriage)
Fig. 4 be needle bar mechanism 10 along the center line of the shank of the side under the state of Fig. 1 and the cutaway view on X-Z plane.As Fig. 1 and shown in Figure 4, shank carriage 40 at an upper portion thereof and at a lower portion thereof, according to being formed with the through hole that shank 20 is passed along two modes arranged side by side of Y direction, and can support each shank 20 by these holes with moving up and down.
Near the support portion of the shank 20 of the bottom of shank carriage 40, be provided with supply parts 41 such as the nonwoven fabric that is used for supplying lubricating oil or lubricating grease etc. or polyurethane, and dispose each shank 20 according to the mode of this supply part 41 that slides.Thus, lubricating oil or lubricating grease are supplied to the sliding part between each shank 20 and the shank carriage 40, thereby successfully move up and down.
In addition, near the support portion of the shank 20 on the top of shank carriage 40, be provided with position-limit mechanism 70, the downside near the position-limit mechanism 70 of shank carriage 40 is provided with switching mechanism 80.Be described in detail in the back about position-limit mechanism 70 and switching mechanism 80.
And, be supported on shank 20 on the shank carriage 40 near, be formed with gathering sill 42, these gathering sill 42 guiding are set at the moving up and down of hornblock 55 of an end of connecting rod body 54, this connecting rod body 54 is wherein paid the driving force that each shank 20 is moved up and down.
In addition, on the above-below direction centre position of Y direction one end of shank carriage 40, be connected with an end of the axis of rocking that shakes driving force 43 of paying the pin swing.This axis of rocking 43 is along rotatably being supported on the Sewing machines machine frame under the state of Y direction, and is connected with head motion, and this head motion and moving up and down of shank 20 are shaken synchronously.In addition, head motion is well-known formation, can regulate its waving angle from 0 ° of angular range to regulation, as required, can make the eedle that remains on each shank 20 carry out the swing of eedle along X-direction with amplitude of fluctuation arbitrarily.In addition, as mentioned above, do not carrying out adjusting the head motion of pin swing under the state of pin swing, can make each shank 20 become state along Z-direction.
(shank up-down mechanism)
As shown in Figure 1, shank up-down mechanism 50 possesses: the shank abut 51 that supports each shank 20 via clutch mechanism 60; Machine spindle 52 by motor of sewing machine (not shown) the rotation driving that drives power source as moving up and down of each shank 20; Be fixedly mounted on the rotary hammer 53 on the end of machine spindle 52; The connecting rod body 54 that between rotary hammer 53 and shank abut 51, connects; The hornblock 55 that the end of the shank abut side of connecting rod body 54 is moved along Z-direction.
Shank abut 51 is formed with the through hole that respectively two shanks 20 is passed, and remains on the shank 20 that inserts in each through hole by clutch mechanism 60.
Be arranged on the hornblock 55 of the other end of connecting rod body 54, the gathering sill 42 by shank carriage 40 only is constrained to and can moves along Z-direction (length direction of supported shank 20).Thus, though an end of connecting rod body 54 is rotated motion with rotary hammer 53, the other end of connecting rod body 54 only moves up and down, and its result pays driving force up and down via 51 pairs of each shanks 20 of shank abut.
(clutch mechanism)
As Fig. 1 and shown in Figure 4, clutch mechanism 60 possesses: two clutch components 61 that insert the supported hole 57 of the circle that connects from the front of shank abut 51 to each through hole; Two follower link 62 that make each clutch components 61 advance and retreat and move respectively separately; Two of locomotivity that pay direction of advance via 62 pairs of each clutch components 61 of each follower link respectively are by pressing spring 63; Block only two card claw stops 64 of each clutch components 61 respectively at the state that retreats (retreating position); Respectively along each card claw stop 64 block that the direction of ending pushes two by pressing spring 65; Can remove the releasing pin 66 of operation from the outside input, this releasing operation is used to remove the card that is undertaken by each card claw stop 64 and ends.
In addition, above-mentioned follower link 62 and releasing pin 66 are equivalent to input block, the input of the active force of the maintenance of next adaptive switched each shank 20 of this input block acceptance and the outside of releasing.
Two supported holes 57 of shank abut 51 form along X-direction, and support roughly columned clutch components 61 slidably along X-direction.
Fig. 5 is the stereogram of clutch components 61.Each clutch components 61 is formed with the projection 61a that is shaped as essentially rectangular of front end face at its leading section (ends of shank 20 1 sides).The front end shape of this projection 61a with and size, roughly consistent with the shape of first connecting hole 21 of shank 20, and can be inserted in first connecting hole 21 by advancing of clutch components 61 mobile (to shank 20 sides mobile).In addition, the projected front ends face 61b of each clutch components 61 is formed a little, thereby can be easily inserted in first connecting hole 21.
And, after the projection 61a with clutch components 61 inserts first connecting hole 21, become shank 20 is remained on state on the shank abut 51, thereby shank 20 is moved up and down with shank abut 51.In addition, when the projection 61a of clutch components 61 was inserted into first connecting hole 21, the bottom that is arranged on the swing plate 25 in the slot part 24 of shank 20 was pressed, and this bottom retreats mobile, and the upper end is advanced mobile simultaneously.
In addition, in the bottom of the projection 61a of each clutch components 61, the leading section that is formed with card claw stop 64 blocks the breach 61c that ends.This breach 61c retreats to the state of the going-back position of stipulating (the projection 61a of its leading section can not arrive the position of first connecting hole 21 of shank 20) at clutch components 61, is set at originally to block on the position of ending card claw stop 64.
Two follower link 62 play a role as input block, are used for clutch components 61 is switched to from the hold mode of each self-corresponding shank 20 action force of disarm state from the outside input.
Each follower link 62 is formed its middle crooked shape, and at this bending pars intermedia, each follower link 62 is supported on the shank abut 51.And an end of follower link 62 is connected the rearward end of clutch components 61, and the other end always is pressed against by on the pressing spring 63.And, push by pressing spring 63, make follower link 62 shake along the direction that clutch components 61 is advanced.
In addition, the other end to each follower link 62, push from the below by pressing spring 63, when clutch components 61 is retreated, be moved upward by shank abut 51, the other end of relative follower link 62, the butt joint projection 81a of the switching part 81 of switching mechanism 80 described later docks from the top, press down and shake by pressing spring 63 by opposing, it is mobile that clutch components 61 is retreated.
Each blocks claw stop 64, can joltily be supported on the bottom of clutch components 61 by shank abut 51.This respectively blocks claw stop 64, and it shakes the end can be along fluctuating, and simultaneously, by shaking upward, the pawl leading section enters the breach 61c of the clutch components 61 that is arranged in going-back position, thereby can remain on the state that does not advance.In addition, respectively usually each card claw stop 64 is pressed to the top from the below by pressing spring 65.Therefore, the pawl leading section of card claw stop 64 is compressed against clutch components 61 sides, and this clutch components 61 retreats and breach 61c when arriving the pawl position, and the pawl leading section is inserted into rapidly.
Remove pin 66, play a role, be used for the active force that when shank 20 is in disarm state, switches from the outside input to hold mode as input block.
Remove pin 66 and be configured to pass between each clutch components 61 and arrive respectively block claw stop 64 and connect shank abut 51, and be supported for and move up and down from shank abut 51.The bottom of removing pin 66 is configured to contact simultaneously and is arranged on the not shown docking section of respectively blocking on the claw stop 64.That is, half the zone of removing the lower surface of pin 66 is docked on a side the docking section of card claw stop 64, and remaining half zone is docked on the opposing party's the docking section of card claw stop 64.
In addition, remove pin 66 and always pushed upward by not shown spring, its upper end is outstanding to the top of shank abut 51.And, since shank abut 51 be moved upward and the butt joint projection 81a of the switching part 81 by switching mechanism 80 described later docks from the top, therefore the upper end that should remove pin 66 is by by downwards, blocks releasing only thereby depress the leading section that card ends the card claw stop 64 of state downwards.
In addition, remove pin 66, whichsoever be in disarm state, it can both be switched to hold mode, remove pin but also can on each shank 20, all individually be provided with for two shanks 20.At this moment, whichsoever remove pin 66, all need to be configured in the moving range of butt joint projection 81a of switching part 81.
(switching mechanism)
Guiding groove section 82 forms on the top of shank carriage 40 and along Y direction, can be slidably supported switching part 81 along equidirectional.
Switching part 81, it is whole to be square column shape roughly, is formed with to what give prominence to the vertical direction of length direction to dock projection 81a on the one end, its other end is connected with the not shown operation input mechanism of the outside that is set at the Sewing machines machine frame.
Switching part 81, butt joint projection 81a towards below state under be supported on the guiding groove section 82.And, by switching part 81 moving along Y direction, on some positions of one side's of the clutch mechanism 60 in the time can arriving top dead-centre follower link 62, the opposing party's follower link 62 or releasing pin 66, can switch butt joint projection 81a by presser bar abut 51.And, can be from the outside of Sewing machines machine frame by above-mentioned operation input mechanism be carried out the switching that projection 81a is docked in manually-operated.In addition, this butt joint projection 81a is configured to:, can and remove pin 66 and depress releasing downwards and respectively move the outstanding length of required path increment each follower link 62,62 of the shank abut 51 that rises to upper dead center position.
(position-limit mechanism)
Position-limit mechanism 70 possesses: support portion 72, and this support portion 72 in the upper end of shank carriage 40, has two fronts from this shank carriage 40 and connects to the through hole of the circle of the through hole of shank 20; Be inserted in two limiting components 71 in the through hole of each support portion 72; Two of locomotivity that each limiting component 71 paid direction of advance (shank 20 1 sides) separately respectively press pressing spring 73; Support respectively by pressing spring 73 in the wings and cover and clog the lid 74 of the through hole of support portion 72.
Each through hole of support portion 72 all is formed along X-direction, and can be slidably supported roughly columned limiting component 71 along X-direction.
Fig. 6 is the stereogram of limiting component 71.It is rectangle from the top view of X-direction that each limiting component 71 is formed its leading section 71a (ends of shank 20 1 sides), observes from the side-looking angle of Y direction, and front end be a semicircle.The shape of this leading section 71a, corresponding with the shape of above-mentioned second connecting hole 22.
As mentioned above, limiting component 71 is by being pressed towards the place ahead by pressing spring 73 from its rear.And, when the leading section 72a of limiting component 72 being inserted second connecting hole 22, become the state that move up and down prevent of relative shank carriage 40 with shank 20 when pushing by this.
But, by the power that swing plate 25 is shaken that produces by the pressing force of pressing spring 73 that each position-limit mechanism 70 is applied, be set to than the pressing force that applies via 62 pairs of clutch components 61 of follower link by pressing spring 65 and the power that swing plate 25 is shaken that produces is little.So, if the projection 61a of clutch components 61 and the leading section 71a of limiting component 71 will be inserted first connecting hole 21 and second connecting hole 22 respectively, then the projection 61a of clutch components 61 enters first connecting hole 21, and the leading section 71a of limiting component 71 can't be pressed and enter second connecting hole 22.
In addition, after the leading section 71a of limiting component 71 was inserted into second connecting hole 22, the upper end that is arranged on the swing plate 25 in the slot part 24 of shank 20 was pushed, thereby it is mobile to be advanced in this upper end, and simultaneously, it is mobile that the bottom is retreated.
In addition, the clutch components 61 of the clutch mechanism 60 when shank abut 51 is in top dead-centre to the distance of the Z-direction of the limiting component 71 of position-limit mechanism 70, is configured to consistent with distance from first connecting hole, 21 to second connecting holes 22 of shank 20.Thus, when shank abut 51 is in upper dead center position, shank 20 can be switched to the hold mode of being undertaken, or the shank 20 that is in hold mode is fastened on the clutch mechanism 60 by position-limit mechanism 70.
(lubricating grease feeding mechanism)
Fig. 7 (A) is the vertical view that the shank abut of immersion oil parts 91 is housed, and Fig. 7 (B) is the vertical view that the shank abut of immersion oil parts 91 is housed.Shown in each figure (especially Fig. 4, Fig. 7, Figure 10), immersion oil parts 91 as lubricating grease feeding mechanism, be the laminal felt member that has immersed lubricating grease, and according to above shank abut 51, being arranged on the shank abut 51 through the back side and the mode that covers the roughly whole zone of bottom surface.In addition, on these immersion oil parts 91, on be equivalent to shank abut 51 and on the position of bottom surface, be formed with the through hole 92 that two shanks 20 pass respectively.Sandwich by adhesion or with immersion oil parts 91 setting and to wait the well-known method of constructing etc. in the shank abut 51, immersion oil parts 91 are arranged on the shank abut 51, when this is packed into, in each shank through hole 92, pass each shank 20.Each through hole 92 is configured to that its internal diameter equates with the external diameter of shank 20 or is more smaller than it, thus the outer peripheral face fluid-tight engagement of the interior circumferential portion of each through hole 92 and each shank 20.Thus, the shank abut 51 when shank 20 relative single needles stop etc. producing when sliding, and can smear lubricating grease fully on the outer peripheral face of shank 20 by immersion oil parts 91.
In addition, along with the driving of Sewing machines, supply with lubricating grease to clutch mechanism 60 to switching part 81 by disperse from immersion oil parts 91 or flow down etc.
Sewing machines shown in the present embodiment except above-mentioned immersion oil parts 91 and above-mentioned supply part 41, also by not shown lubricating grease feeding mechanism, realizes that the facial interior needle bar mechanism 10 that is arranged on the Sewing machines machine frame produces the grease lubrication at each position of sliding.
In addition, though immersion oil parts 91 have adopted felt member, be not only for therewith, also can adopt by nonwoven fabric or various fibrous raw material, porous material wait keep lubricating grease, as long as can be lubricated the material of the supply of fat by sliding-contact.
(selection of the material of switching part and input block)
Fig. 8 be expression with respect to the sample of making by various materials, make the collision of making by the same material with sheet under identical conditions, collide, the result's of the wear extent of this moment figure relatively.Test is undertaken by following, under the oil-free environment that all do not make with lubricator, applies 13[N in collision on sheet] the load loading of (, saying this value instability closely) owing to collide repeatedly and relatively each sample carry out 6 * 10
6Inferior collision.In addition, in Fig. 7, the wear extent of having represented the sample that will be made by the softest carburized surface hardened steel is made as other the wear extent of sample under 1 the situation.
(1) according to this result of the test, tool steel is than carburized surface hardened steel hardness height, and the relative carburized surface hardened steel of wear extent is high by 0.8.
(2) in addition, the material of the carburized surface hardened steel having been implemented the particulate bead is than the carburized surface hardened steel hardness height of not handling, and the relative carburized surface hardened steel of wear extent hangs down 0.8.
Especially, the particulate bead, fatigue strength, the raising of removing residual stress by raising keep effect by forming the lubricating grease that brings in the nick hole, can improve mar proof.
As above-mentioned sample, having adopted will be with diameter 40[μ m] pottery be that the particulate of material is with jet velocity 200[m/s] at the sample of internal radiation in 1 minute.
(3) in addition, high-carbon alloy steel is than carburized surface hardened steel hardness height, and the relative carburized surface hardened steel of wear extent is high by 0.4.
Here, as high-carbon alloy steel, adopted iron with percent 0.7 ratio carbon containing.
(4) in addition, to the material of carburized surface hardened steel enforcement nitrogen treatment, than the carburized surface hardened steel hardness height of not handling, the relative carburized surface hardened steel of wear extent low 0.4.
As nitrogen treatment, use the sample that has carried out ion Plasma Nitriding Treatment.In addition, adopted form about 1[μ m by nitrogen treatment] the method for white cortex of thickness.
(5) in addition, the high-carbon alloy steel that contains chromium has been implemented the material of nitrogen treatment, than carburized surface hardened steel hardness height, the relative carburized surface hardened steel of wear extent is high by 0.1.
Here, as high-carbon alloy steel, adopt the carbon that comprises percent 0.7 ratio, comprised the steel alloy of percent 0.9 ratio chromium.
As nitrogen treatment, use the sample that has carried out ion Plasma Nitriding Treatment.In addition, adopted form about 1[μ m by nitrogen treatment] the sample of white cortex of thickness.
The switching part 81 of above-mentioned switching mechanism 80, even certain shank is switched, in addition, even carrying out to the switching of hold mode and during to certain action of the switching of disarm state, because certain follower link 62 or releasing pin 66 are collided, so, to compare with follower link 62 and releasing pin 66, the number of times that collides is the highest.
For this reason, the material of implementing nitrogen treatment by the high-carbon alloy steel that contains chromium that expression in above-mentioned comparative test is had high abrasion resistance forms switching part 81.About this material, the hardness of using is 800[HV].
The follower link 62 of clutch mechanism 60 and remove pin 66 is being carried out to the switching of disarm state or during to the switching of hold mode, owing to bump with switching part 81, is being selected collision is had the material of abrasion resistance properties to certain shank 20.But, considered the parts not higher, so the material of particulate bead will the carburized surface hardened steel lower than switching part 81 patience have been implemented in employing than the frequency of switching part 81 collisions.About this material, the hardness of using is 700[HV].
In addition, by switching part 81 and follower link 62 or and remove the collision between the pin 66 and the impact that produces is transmitted easily, thus, the clutch components 61 of the fretting of generation and card claw stop 64 also can be by forming with identical materials such as follower link 62.
(action specification of the needle bar mechanism of two-needle sewing machine)
Based on Fig. 1 and Figure 11, the action of the needle bar mechanism 10 of two-needle sewing machine is described.Fig. 9, Figure 11 are respectively the key diagrams of the action of needle bar mechanism 10.Figure 10 is a side the cutaway view of section of center line of shank 20 of the operating state that has passed through Fig. 7 of needle bar mechanism 10.
Fig. 1 and Fig. 4 have represented that each shank 20 all is maintained at the state on the shank abut 51 that is in upper dead center position, begins action is described below.
By the driving of motor of sewing machine,, shank abut 51 is paid the decline locomotivity via machine spindle 52, rotary hammer 53 and the connecting rod body 54 of shank up-down mechanism 50.Thus, shank abut 51 moves to bottom dead centre (state of Fig. 3) with two shanks 20.
And, shank 20 (shank 20 with the left side is that example describes here) about a side, when stopping to move up and down, during shank abut 51 begins to descend and gets back to top dead-centre once more, not shown operation input mechanism to the outside that is arranged on the Sewing machines machine frame is operated, and the butt joint projection 81a of switching part 81 is overlapped with the top position of the follower link 62 in left side.
When the driving by motor of sewing machine made shank abut 51 move to top dead-centre once more, the butt joint projection 81a of switching part 81 pushed the follower link 62 (state of Fig. 9 and Figure 10) in left side downwards.
Thus, follower link 62 opposing in left side makes clutch components 61 direction of drawing back move by pressing spring 63, its result, be positioned at the leading section of card claw stop 64 of the below of this clutch components 61, by pushing and enter in the breach 61c by pressing spring 65 so that clutch components 61 can not before so that block and end.
And, retreat mobile by clutch components 61, extract from first connecting hole 21, the bottom of the swing plate 25 in the slot part 24 of the shank 20 in left side is freed from pressed state, and the leading section of the limiting component of pushing in the upper end 71 enters in second connecting hole.Thus, the shank 20 in left side becomes dead-centre position thereon and is maintained at state on the shank carriage 40.
Then, as shown in figure 11, when shank abut 51 descends when mobile once more, only the shank 20 on right side descends with shank abut 51, and the shank 20 in left side is stayed upper dead center position.Thus, between the shank 20 in shank abut 51 and left side, produce to slide, simultaneously, supply with lubricating grease and smear by 91 pairs of these shanks 20 of immersion oil parts.
In addition, for shank 20 being moved up and down once more from this state, begin during get back to top dead-centre from the decline of shank abut 51, not shown operation input mechanism to the outside that is arranged on the Sewing machines machine frame is operated, and the butt joint projection 81a of switching part 81 is overlapped with the top position of removing pin 66.
When the driving by motor of sewing machine made shank abut 51 move to top dead-centre once more, the butt joint projection 81a of switching part 81 pushed pin 66 (states of Fig. 1 and Fig. 4) of removing downwards.
Thus, remove pin 66, the docking section of the card claw stop 64 in left side is pushed in its bottom, and opposing makes the leading section of card claw stop 64 move downwards by pressing spring 65.Its result has removed the state that card claw stop 64 ends to the card of the breach 61c of clutch components 61, and this clutch components 61 is by pushing by pressing spring 63 and advancing mobile.Then, clutch components 61 enters first connecting hole 21 of the shank 20 that keeps on shank carriage 40, and the bottom of pushing swing plate 25, and the limiting component 71 of pushing the upper end is pushed back and sends to the outside of second connecting hole 22.
Thus, this shank 20, the state that is kept by limiting component 71 is disengaged, and becomes the state that is maintained on the shank abut 51, and begins once more to move up and down.
(effect of embodiment)
As mentioned above, in sewing machine needle bar device 10, by by through nitrogen treatment the high-carbon alloy steel that contains chromium form switching part 81, with the situation of using carburized surface hardened steel only or tool steel relatively, hardness uprises, and corrosion stability, mar proof have also improved.So because the variation of these characteristics, even under the environment of the grease lubrication that suppresses lubricant effect, the fretting that is caused by repeatedly collision can improve durability relatively, thereby through also keeping normal operation for a long time.
In addition; on switching part 91; because the position of collision at switching part has formed the white cortex with the high and crisp characteristic of hardness; so when collision; between the parent part and input block of switching part, white cortex has been protected parent part, even under the environment that carries out grease lubrication; also can further improve durability, also can keep normal operation through the longer time at fretting.
In addition, by follower link 62 and the releasing pin 66 that forms clutch mechanism 60 by the carburized surface hardened steel of having implemented the particulate bead, with the situation that adopts carburized surface hardened steel only or tool steel relatively, hardness uprises, corrosion stability, mar proof have also improved.So because the variation of these characteristics, even under lubricated inadequate dried environment, the fretting that is caused by repeatedly collision can improve durability relatively, thereby through also keeping normal operation for a long time.
In addition, because the follower link 62 of clutch mechanism 60 has adopted the switching part 81 hardness low material higher than collision frequency, the balance of durability is better, thereby has improved the durability of the integral body of needle bar mechanism 10, through also keeping normal operation for more time.
In addition, owing to carried out grease lubrication in the face of Sewing machines, can suppress lubricant and leak to the sewn object side, simultaneously, what guarantee Sewing machines makes action smoothly.
And, owing to supply with lubricating grease to the shank abut 51 and the sliding position between the shank 20 of needle bar mechanism 10 by immersion oil parts 91, so, even when removing the maintenance of certain shank 20, also can successfully carry out moving up and down of shank abut 51.So, can successfully carry out making of Sewing machines.At this moment, because immersion oil parts 91 are set in the shank abut 51, are lubricated the supply of fat so only between shank 20 and shank abut 51, produce when moving relatively, thereby can reduce the consumption of lubricating grease.
In addition, owing to contain the supply that the immersion oil parts 91 that kept lubricating grease are lubricated fat by soaking, so, only by just can be lubricated the supply of fat in these immersion oil parts 91 enterprising line slip contacts, do not need to store the path that lubricating grease or setting move to donor site, thus simplification that can implementation structure.So, can improve the productivity of needle bar mechanism.
(other)
In addition, above-mentioned embodiment, though the support to the shank 20 on the shank shaketable (shank carriage 40) that is supported on the pin swing mechanism is illustrated, but not necessarily must carry out the pin swing, the ground supporting needle rod gets final product so long as the shank supporter can move up and down, for example, also can be the structure that is fixed on the Sewing machines machine frame.
In the above-described embodiment, about switching part 81, form its integral body by the high-carbon alloy steel that contains chromium that has carried out nitrogen treatment, but this is not particularly limited, the high-carbon alloy steel that contains chromium or the parent part that have carried out nitrogen treatment also can only be installed at the position that produces collision adopts the high-carbon alloy steel that contains chromium and only carry out nitrogen treatment at the position that produces collision.
Equally, about follower link 62 or releasing pin 66, also can only the carburized surface hardened steel of having implemented the particulate bead be installed, or parent part adopts the carburized surface hardened steel and only implements the particulate bead at the position that produces collision at the position that produces collision.
In addition, from Fig. 8 more as can be known, the particulate bead is not limited to the carburized surface hardened steel, also can implement on other material.For example, also can implement the particulate bead, and be used for switching part 81, or be used for follower link 62 and remove pin 66 high-carbon alloy steel (contain chromium and do not contain chromium can).
In addition, also can or carry out flood lubrication fat in each parts of action of clutch mechanism 60, and be provided with simultaneously by sliding-contact and be lubricated the such feed mechanism of immersion oil parts that fat supplies with 91 at switching part 81.
Claims (7)
1. the needle bar mechanism of a two-needle sewing machine has:
Can support the shank supporter of a pair of shank respectively with moving up and down;
Use the shank up-down mechanism that keeps the shank abut of described a pair of shank respectively and described each shank is moved up and down;
Clutch mechanism, it carries out at the maintenance of described each shank of described shank abut and releasing, simultaneously, possess the maintenance of accept switching this each shank and releasing, from a plurality of input blocks of the input of the active force of outside;
Switching part, it is docked on certain input block selectively by the lifting action of described clutch mechanism, carries out the maintenance of described each shank or any one switching of releasing;
And possesses the single needle hold function that moves up and down that selectively stops described a pair of shank; It is characterized in that,
Possess lubricating grease feeding mechanism, this mechanism is set on the described shank abut, and is used for supplying with lubricating grease to the sliding position of this shank abut and described each shank.
2. the needle bar mechanism of two-needle sewing machine according to claim 1, it is characterized in that described lubricating grease feeding mechanism has the immersion oil parts, these immersion oil parts, be set on the described shank abut in mode, and soak to contain and maintain lubricating grease with described each shank sliding-contact.
3. the needle bar mechanism of two-needle sewing machine according to claim 1 is characterized in that, on setting on the described shank abut and at least one side at described clutch mechanism and described switching part the lubricating grease feeding mechanism of supplying with lubricating grease is set.
4. the needle bar mechanism of two-needle sewing machine according to claim 1 is characterized in that, to described switching part implement nitrogen treatment with the docking site of described each input block at least, and adopt the high-carbon alloy steel that contains chromium.
5. the needle bar mechanism of two-needle sewing machine according to claim 1 is characterized in that, to described each input block at least with the docking site of described switching part, adopt the high-carbon alloy steel of having implemented the particulate bead.
6. the needle bar mechanism of two-needle sewing machine according to claim 1, it is characterized in that, make described switching part, with the case hardness of the described docking site of described each input block, than described each input block, with the described docking site height of described switching part.
7. the needle bar mechanism of two-needle sewing machine according to claim 1 is characterized in that, described each input block at least with the docking site of described switching part, adopt the carburized surface hardened steel of having implemented the particulate bead.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004336054A JP2006141706A (en) | 2004-11-19 | 2004-11-19 | Needle bar mechanism of twin needle sewing machine and twin needle sewing machine equipped with this |
| JP2004336054 | 2004-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1776066A true CN1776066A (en) | 2006-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510125132 Pending CN1776066A (en) | 2004-11-19 | 2005-11-21 | Needle stem mechanism of double-needle sewing machine |
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| Country | Link |
|---|---|
| JP (1) | JP2006141706A (en) |
| CN (1) | CN1776066A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104989B (en) * | 2006-07-14 | 2011-12-21 | 大和缝纫机制造株式会社 | Lubricating structure for sewing machine |
| CN102409489A (en) * | 2011-09-14 | 2012-04-11 | 新杰克缝纫机股份有限公司 | Needle rod for two-needle sewing machine, and switching mechanism for needle rod |
| CN101619522B (en) * | 2008-07-04 | 2013-02-27 | 威陛马科股份公司 | Sewing machine |
| CN102965853A (en) * | 2011-08-31 | 2013-03-13 | Juki株式会社 | Double needle sewing machine |
| CN103361900A (en) * | 2013-07-24 | 2013-10-23 | 宁波舒普机电科技有限公司 | Multiple needle bar module |
| CN105200680A (en) * | 2015-10-13 | 2015-12-30 | 苏州科润织造有限公司 | Oil storage and lubrication mechanism for sewing machine |
| CN105696214A (en) * | 2016-03-08 | 2016-06-22 | 常州智谷机电科技有限公司 | Double-color switching mechanism |
| CN111926475A (en) * | 2019-05-13 | 2020-11-13 | Juki株式会社 | Two-needle sewing machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110791894A (en) * | 2019-10-18 | 2020-02-14 | 广东金悦来自动化设备有限公司 | Double-needle switching device and double-needle sewing machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01300990A (en) * | 1988-05-30 | 1989-12-05 | Brother Ind Ltd | Double-needle corner sewing machine with thread cutting device |
| JPH0938368A (en) * | 1995-07-28 | 1997-02-10 | Brother Ind Ltd | Needle bar of sewing machine and manufacture thereof |
| JP3798857B2 (en) * | 1996-10-14 | 2006-07-19 | Ｊｕｋｉ株式会社 | Industrial sewing machine lubrication equipment |
| JP4660002B2 (en) * | 2001-04-09 | 2011-03-30 | Ｊｕｋｉ株式会社 | Guide to the sewing machine |
-
2004
- 2004-11-19 JP JP2004336054A patent/JP2006141706A/en active Pending
-
2005
- 2005-11-21 CN CN 200510125132 patent/CN1776066A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104989B (en) * | 2006-07-14 | 2011-12-21 | 大和缝纫机制造株式会社 | Lubricating structure for sewing machine |
| CN101619522B (en) * | 2008-07-04 | 2013-02-27 | 威陛马科股份公司 | Sewing machine |
| CN102965853A (en) * | 2011-08-31 | 2013-03-13 | Juki株式会社 | Double needle sewing machine |
| CN102965853B (en) * | 2011-08-31 | 2016-05-11 | Juki株式会社 | Two-needle sewing machine |
| CN102409489A (en) * | 2011-09-14 | 2012-04-11 | 新杰克缝纫机股份有限公司 | Needle rod for two-needle sewing machine, and switching mechanism for needle rod |
| CN102409489B (en) * | 2011-09-14 | 2013-06-05 | 新杰克缝纫机股份有限公司 | Needle rod for two-needle sewing machine, and switching mechanism for needle rod |
| CN103361900A (en) * | 2013-07-24 | 2013-10-23 | 宁波舒普机电科技有限公司 | Multiple needle bar module |
| CN105200680A (en) * | 2015-10-13 | 2015-12-30 | 苏州科润织造有限公司 | Oil storage and lubrication mechanism for sewing machine |
| CN105696214A (en) * | 2016-03-08 | 2016-06-22 | 常州智谷机电科技有限公司 | Double-color switching mechanism |
| CN111926475A (en) * | 2019-05-13 | 2020-11-13 | Juki株式会社 | Two-needle sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006141706A (en) | 2006-06-08 |
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