CN101538783A - Sewing machine needle bar, sew machine and sewing machine needle bar menbrane forming method - Google Patents
Sewing machine needle bar, sew machine and sewing machine needle bar menbrane forming method Download PDFInfo
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- CN101538783A CN101538783A CN200910129410A CN200910129410A CN101538783A CN 101538783 A CN101538783 A CN 101538783A CN 200910129410 A CN200910129410 A CN 200910129410A CN 200910129410 A CN200910129410 A CN 200910129410A CN 101538783 A CN101538783 A CN 101538783A
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Abstract
The invention provides a sewing machine needle bar, a sew machine and a sewing machine needle bar menbrane forming method. The sewing machine needle bar (19) and sew machine provided by the invention can confirm position of a base line without decreasing durability of the needle bar (19) eliminated with lubricant under condition of no oil provided. A bearing component of a sewing machine frame supports the needle bar (19) which runs through the bearing component and can move back and forth along an axis direction. A needle bar drive mechanism drives the needle bar to move back and forth. In order to adjust action time and lower limit position of the needle bar (19), three base lines (22, 23, 24) are marked on periphery of the needle bar (19). A DLC membrane (25) is formed in the peripheral sliding face where the needle bar (19) is opposite to the bearing component and at the rear part near to the base lines (22, 23, 24). And a DLC membrane (25) is formed at the part except the part near to the base lines (22, 23, 24).
Description
Technical field
The present invention relates to needle bar of sewing machine and Sewing machines.In particular, the present invention relates in the periphery sliding surface relative of shank with bearing components except baseline near the part of portion be formed with the film formation method of needle bar of sewing machine, Sewing machines and the needle bar of sewing machine of wear-resisting overlay film.
Background technology
In the past, the bearing components supporting of sewing machine frame can come and go the needle bar of sewing machine that moves along axis direction (above-below direction) in this bearing components.Needle bar drive mechanism drives shank and it is moved up and down.For action moment and the lower position of adjusting shank, be marked with many baselines at the outer peripheral face of shank.Baseline forms as follows.At first, utilize machining etc. to form stria at the peripheral part of shank.Then, carry out Quenching Treatment.At last, the outer peripheral face to shank carries out milled processed.The result of milled processed, the outer peripheral face of shank becomes the metallic luster look.Different with outer peripheral face, groove is not carried out milled processed, therefore, the oxide that produces when Quenching Treatment remains in the groove and becomes baseline.Therefore, baseline is a black.
For example, in the needle-bar travel regulating device described in 2002 No. 219293 communiques of Japan's patent disclosure, be marked with and shank length direction two lines (baseline) up and down of quadrature mutually at shank.The operating personnel adjusts the path increment up and down of shank by under the state of the upper end of shank anchor clamps being aimed at arbitrary baseline shank being fixed on the shank anchor clamps according to thickness, the kind of cloth.
In industrial sewing machines etc., developing the no fuel feedingization that abolishment is lubricated with lubricating oil.As in the dry lubrication of no fuel feedingization, for example adopt lubricating grease as the lubriation material that is used for the sliding surface between bearing components and the shank is lubricated.The Sewing machines of employing lubricating grease is provided with the lubricating grease resettlement section in the sliding surface upper shed of bearing components.This Sewing machines comes this sliding surface is lubricated by making the lubricating grease that is filled in the lubricating grease resettlement section be exuded to sliding surface.Therefore, this Sewing machines has prevented sliding surface wearing and tearing, sintering.In order to improve the shank durability under the no oil providing condition, shank in the past is after the peripheral part of shank forms baseline, at the good overlay film of outer peripheral face formation DLC (Diamond-Like Carbon) overlay film uniform wearability of shank.
Outer peripheral face at shank is formed with under the situation of DLC overlay film, and the DLC overlay film is black roughly.As mentioned above, because baseline also is a black, therefore be difficult to see baseline.Consequently, there is the such problem of action moment and lower position that is difficult to adjust shank in this Sewing machines.On the contrary, do not form under the situation of DLC overlay film, the metallic luster look arranged in that the outer peripheral face of shank is residual, therefore be easy to see baseline, but do not have the shank durability reduction oil providing condition under at the outer peripheral face of shank.
Summary of the invention
The object of the present invention is to provide and to confirm baseline position easily, adjust the action moment and the lower position of shank easily, and do not reduce the film formation method of needle bar of sewing machine, Sewing machines and the needle bar of sewing machine of the shank durability under the no oil providing condition.
The needle bar of sewing machine of technical scheme 1 is in the bearing components of sewing machine frame, also can come and go mobile along axis direction by this bearing components supporting, and come and go mobile by needle bar drive mechanism drives, wherein, above-mentioned shank is installed on the baseline of the position on the above-mentioned needle bar drive device having expression on the outer peripheral face of above-mentioned shank, in the periphery sliding surface relative of above-mentioned shank with above-mentioned bearing components, portion does not form wear-resisting overlay film near above-mentioned baseline, and the part near portion above-mentioned baseline is formed with above-mentioned wear-resisting overlay film.
Because the needle bar of sewing machine of technical scheme 1 is formed with wear-resisting overlay film at the periphery sliding surface of shank, therefore, can improve the durability of the shank under the no oil providing condition.Because in the periphery sliding surface of shank, portion does not form wear-resisting overlay film near baseline, therefore, the operating personnel can confirm the position of baseline easily.Therefore, the operating personnel can adjust the action moment and the lower position of shank easily.Because it is few not form the part of wear-resisting overlay film, therefore, can not influence the durability of shank.
The needle bar of sewing machine of technical scheme 2 is in the periphery sliding surface of shank, extended line part in the annulus of the complete cycle that comprises above-mentioned baseline of above-mentioned shank, above-mentioned at least baseline does not form wear-resisting overlay film, and is formed with wear-resisting overlay film in the part except above-mentioned annulus.Therefore, the part that does not form wear-resisting overlay film Min. can be suppressed to, therefore, the shank durability under the no oil providing condition can be further improved.
The needle bar of sewing machine of technical scheme 3 do not form wear-resisting overlay film in a plurality of circles that are arranged in above-mentioned shank peripheral part along above-mentioned baseline, and the part in above-mentioned a plurality of circles is formed with above-mentioned wear-resisting overlay film in the periphery sliding surface of shank.Therefore, a plurality of circle that does not form wear-resisting overlay film becomes recess with respect to the part that is formed with wear-resisting overlay film inner the branch.Because recess plays the effect that lubricating grease accumulates the place, therefore, can further improve the shank durability under the no oil providing condition.
In the needle bar of sewing machine of technical scheme 4, wear-resisting overlay film is made of the DLC overlay film.Because DLC overlay film hardness height and coefficient of friction are very low, therefore, can further improve the shank durability under the no oil providing condition.
The Sewing machines of technical scheme 5 comprises each described needle bar of sewing machine in the technical scheme 1～3.That is, comprise the wear-resisting overlay film that the durability that has under the no oil providing condition is good and can confirm the shank of the position of baseline easily.Therefore, the operating personnel can adjust the action moment and the lower position of shank easily.
The Sewing machines of technical scheme 6 comprises technical scheme 4 described needle bar of sewing machine.Comprise that the durability under the no oil providing condition is very good, and can confirm the shank of baseline position easily.The operating personnel can utilize baseline to adjust the action moment and the lower position of shank easily.
The film formation method of technical scheme 7 is the film formation methods that form overlay film on needle bar of sewing machine, this needle bar of sewing machine is in the bearing components of sewing machine frame, also can come and go mobile along axis direction by this bearing components supporting, and come and go mobile by needle bar drive mechanism drives, wherein, this method comprises: the 1st operation, cover on the outer peripheral face be formed at shank with mask member and expression shank is installed on the position on the needle bar drive device baseline near under the state of portion, on the periphery sliding surface relative of shank, form wear-resisting overlay film with bearing components; The 2nd operation is removed mask member.Therefore, can be simply in the periphery sliding surface of needle bar of sewing machine, the good wear-resisting overlay film of durability under the no oil providing condition of the formation of the part near portion baseline.And,, therefore can confirm baseline position easily because portion does not form wear-resisting overlay film near baseline.
In the film formation method of technical scheme 8, in the 1st operation, under the state of extended line part in the annulus of the complete cycle that comprises above-mentioned baseline that covers above-mentioned shank with above-mentioned mask member, above-mentioned at least baseline, form wear-resisting overlay film.Therefore, the part that does not form wear-resisting overlay film Min. can be suppressed to, therefore, the better needle bar of sewing machine of durability under the oil providing condition can be obtained not have.
The film formation method of technical scheme 9 is the film formation methods that form overlay film on needle bar of sewing machine, this needle bar of sewing machine is in the bearing components of sewing machine frame, also can come and go mobile along axis direction by this bearing components supporting, and come and go mobile by needle bar drive mechanism drives, wherein, this method comprises: the 1st operation is being formed on the outer peripheral face of shank and expression is installed on shank on the periphery sliding surface relative with bearing components of the baseline of the position on the needle bar drive device and shank and forms wear-resisting overlay film; The 2nd operation under near the state of the part portion baseline that covers with mask member in the periphery sliding surface, is removed the wear-resisting overlay film that is formed near the portion baseline; The 3rd operation is removed mask member.Therefore, can be simply in the periphery sliding surface of needle bar of sewing machine, the good wear-resisting overlay film of durability under the no oil providing condition of the formation of the part near portion baseline.And,, therefore can confirm baseline position easily because portion does not form wear-resisting overlay film near baseline.
In the film formation method of technical scheme 10, in the 2nd operation, covering under the state of periphery sliding surface to have the mask member that a plurality of patterns that are arranged in the shank peripheral part along baseline form the hole, removing and be formed on and a plurality of patterns form the corresponding locational wear-resisting overlay film in hole.Consequently, forming corresponding position, hole with a plurality of patterns and become recess in the periphery sliding surface of shank.Because recess plays the effect that lubricating grease accumulates the place, therefore, can obtain not have the better needle bar of sewing machine of durability under the oil providing condition.
In the film formation method of technical scheme 11, wear-resisting overlay film is made of the DLC overlay film.Because DLC overlay film hardness height and coefficient of friction are very low, therefore, can obtain not have the very good needle bar of sewing machine of durability under the oil providing condition.
Description of drawings
Fig. 1 is the stereogram of the Sewing machines of embodiments of the invention.
Fig. 2 is the stereogram of the internal mechanism of Sewing machines.
Fig. 3 is the major part enlarged drawing of shank.
Fig. 4 is the baseline of shank and the major part amplification view of DLC overlay film.
Fig. 5 makes mask member be nested in major part amplification view under the state on the shank.
Fig. 6 is the major part amplification view under the state that has formed the DLC overlay film on the shank.
Fig. 7 is the major part amplification view under the state that has formed the DLC overlay film on the shank of variation 1.
Fig. 8 makes mask member be nested in major part amplification view under the state on the shank.
Fig. 9 is the major part amplification view of the shank after the etch processes.
Figure 10 is the figure suitable with Fig. 3 of variation 2.
Figure 11 makes ring element be nested in major part amplification view under the state on the shank.
Figure 12 is the figure suitable with Fig. 3 of variation 3.
Figure 13 is the figure of explanation mask process.
The specific embodiment
Below, illustrate to be used to implement best mode of the present invention.
As shown in Figure 1, industrial sewing machines 1 comprise support portion 2, support column portion 3 and arm 4.Support column portion 3 erectly is provided with from the right end portion of support portion 2.Arm 4 extends and faces mutually with support portion 2 to left from the upper end of support column portion 3.As shown in Figure 2, arm 4 within it portion have main shaft 14.Be disposed at the sewing machine electromotor M driving main shaft 14 in the arm and make its rotation.The fore-end of arm 4 portion within it has needle bar drive device 15 and thread take-up tension lever luffing mechanism (not shown).Needle bar drive device 15 moves shank 19 up and down.Shank 19 has sewing needle 21 in its lower end.The thread take-up tension lever luffing mechanism swings up and down thread take-up tension lever 7.Needle bar drive device 15 and thread take-up tension lever luffing mechanism are linked to main shaft 14.
As shown in Figure 1, the cardinal extremity of arm 4 part is linked to the upper end of support column portion 3 integratedly.The base end part of arm 4 portion within it has sewing machine electromotor M.As shown in Figure 2, the output shaft of sewing machine electromotor M utilizes shaft coupling 11 and main shaft 14 to be connected.It is one that shaft coupling 11 links with belt pulley 12.Work feed is regulated the front surface that dial knob 8 is arranged on support column portion 3.Manually belt pulley 10 is arranged on the right-hand member side of arm 4.Manually belt pulley 10 is used for manual operation main shaft 14.
In arm 4, main shaft 14 extends along left and right directions.In the inside of the fore-end of arm 4, needle bar drive device 15 is connected with the left part of main shaft 14.Be fixedly installed in the bottom of the shank 19 that can up and down move of bearing components 20 (bearing) supporting in this bearing components 20 on the sewing machine frame F.
Shank anchor ear 18 is fixed near the length direction centre of shank 19.Shank anchor ear 18 can be adjusted the height and position of shank 19 by the fixed position that changes shank 19.Be installed with needle bar crank 16 (balance weight) in the left part of main shaft 14.The upper end that needle bar crank 16 makes needle bar crank connecting rod 17 in its left side is the upper end of needle support pole crank connecting rod 17 rotationally.The bottom of needle bar crank connecting rod 17 is connected by shank anchor ear 18 and shank 19.
Then, shank 19 is described.As shown in Figure 3, on the outer peripheral face of shank 19 bottoms, be provided with three baselines 22,23,24.Baseline the 22,23, the 24th is used to adjust the action moment of shank 19 and the mark of the lower position of motion up and down. Baseline 22,23,24 along continuous straight runs extend.The length of baseline 22,23,24 is less than the outer perimeter of shank 19.Baseline 24 is positioned at the position with respect to the dislocation of baseline 22,23 along continuous straight runs.
Then, the method for adjustment of the action moment of simple declaration shank 19 and lower position.At first, the operating personnel operates manual belt pulley 10, makes shank 19 aim at lower position.Specifically, the operating personnel adjusts the height and position of shank 19 with respect to shank anchor ear 18, makes baseline 22 be positioned at the lower end of bearing components 20 when shank 19 is positioned at lower position, then shank 19 and shank anchor ear 18 is fixed.Then, when baseline 23 was positioned at the lower end of bearing components 20, the operating personnel confirmed that the rotating shuttle point is in the junction position.The junction position is meant that the rotating shuttle point is caught the position of the wire loop of the upper thread in the pinprick that is formed at sewing needle 21.Afterwards, when baseline 24 was positioned at the lower end of bearing components 20, the operating personnel confirmed to begin to carry out thread cutting action by thread cutting device.The operating personnel adjusts the action moment and the lower position of shank 19 according to the main points of above explanation.In addition, in order to carry out above-mentioned affirmation operation, the operating personnel uses manual belt pulley 10 to change the position of shank 19.
As shown in Figure 3, Figure 4, in the periphery sliding surface relative with bearing components 20 of shank 19, the part near portion baseline 22,23,24 and baseline is formed with the roughly DLC overlay film 25 of black (wear-resisting overlay film).The thickness of DLC overlay film 25 is about 2～6 μ m.The hardness of DLC overlay film 25 can be utilized hydrogen content to wait and regulate.Specifically, can make Vickers hardness is high rigidity overlay film about hundreds of HV～8000HV.8000HV is near the hardness of diamond.The coefficient of friction of DLC overlay film 25 is about below 0.1.Therefore, the ABRASION RESISTANCE of DLC overlay film 25 and sliding are very good.
Then, in the periphery sliding surface of shank 19, the method that the part near portion baseline 22,23,24 and baseline forms DLC overlay film 25 describes.As shown in Figure 5, at first, on the periphery sliding surface of shank 19, roughly to be close to the mask member cylindraceous 27 that shape install to cover near portion slot part 26 and the baseline.Then, use physical vapor deposition, the surface portion that not masked member 27 covers in the periphery sliding surface of shank 19 forms the DLC overlay film 25 (with reference to Fig. 6) as the ABRASION RESISTANCE overlay film.
As physical vapor deposition, can use method in common such as sputter and ion plating.Sputter is for example to use graphite as target, makes the film build method of the plasma strike target that produces with high frequency.Ion plating is to utilize arc discharge etc. with vaporized carbon atom ionization, makes its acceleration and is deposited in film build method on the overlay film object of negative potential.Then, remove mask member 27 (with reference to Fig. 4) from the periphery sliding surface of shank 19.Consequently, in the periphery sliding surface of shank 19, the metal covering that shank 19 is arranged exposes in portion near the slot part 26 that does not form DLC overlay film 25.Therefore, near the portion of slot part 26 becomes the metallic luster look.
Effect, the effect of the shank 19 of Sewing machines 1 then, are described.In the shank 19 of Sewing machines 1, indicate three baselines 22,23,24 of the position of expression installation shank 19 at the outer peripheral face of shank 19.In the periphery sliding surface relative with bearing components 20 of shank 19, the part near portion baseline 22,23,24 and baseline is formed with the DLC overlay film 25 of black.In the periphery sliding surface of shank 19, portion does not form DLC overlay film 25 near baseline 22,23,24 and baseline, and therefore, the metal covering of shank 19 exposes.Therefore, the color of portion is the metallic luster look near the baseline 22,23,24.
As mentioned above, outer peripheral face at shank 19 is provided with three baselines 22,23,24 that the position of shank 19 is installed in expression, and in the periphery sliding surface relative with bearing components 20 of shank 19, the part near portion baseline 22,23,24 and baseline is formed with high rigidity and the low-down DLC overlay film 25 of coefficient of friction.Therefore, DLC overlay film 25 can improve the durability of the shank 19 under the no oil providing condition.
Because in the periphery sliding surface of shank 19, portion does not form DLC overlay film 25 near baseline 22,23,24 and baseline, therefore, the operating personnel can confirm the position of baseline 22,23,24 easily.Therefore, the operating personnel can adjust the action moment and the lower position of shank 19 easily.Because it is few not form the part of DLC overlay film 25, therefore, can not influence the durability of shank.Under the state that covers near portion baseline 22,23,24 and the baseline with mask member 27, form DLC overlay film 25.Therefore, in the periphery sliding surface of shank 19, portion does not form DLC overlay film 25 near baseline 22,23,24 and baseline, and the part near portion baseline 22,23,24 and baseline forms DLC overlay film 25 simply.
In addition, in an embodiment, baseline 22,23,24 does not form DLC overlay film 25, but can form DLC overlay film 25 on baseline 22,23,24 yet yet.
Then, the variation that the part that changes the foregoing description forms is described.
[1] can substitute with mask member 27 with following preparation method and cover the part that does not need to form DLC overlay film 25 in the periphery sliding surface of shanks 19.At first, on the whole periphery sliding surface of the shank 19 that comprises baseline 22,23,24, form DLC overlay film 25.Afterwards, under the state that covers near the part portion baseline 22,23,24 and baseline with mask member 27, carry out etch processes, remove near the DLC overlay film 25 of the portion of baseline 22,23,24 and baseline.
For example, on the periphery sliding surface of shank 19, form Cr overlay film 35 (with reference to Fig. 7).Then, form DLC overlay film 25 on the surface of Cr overlay film 35.Cr overlay film 35 utilizes UBM sputter (Unbalanced MagnetronSputtering) film forming continuously in a vacuum with DLC overlay film 25.Specifically, at first, be that target carries out sputter with Cr, form Cr overlay film 35 with regulation thickness.Then, carry out the sputter of Cr and be the sputter of target simultaneously with graphite.Can make the ratio of graphite become big by the sputtering yield that changes Cr and graphite gradually, thereby on the surface of Cr overlay film 35, form DLC overlay film 25.
Then, in the surface of DLC overlay film 25, the part near portion slot part 26 and baseline is installed mask member 27 roughly to be close to shape, covers the part (with reference to Fig. 8) on the surface of DLC overlay film 25.Mask member 27 is made of aluminium.
Then, implement plasma etching.The shank 19 that has covered the part on DLC overlay film 25 surfaces with mask member 27 is as described above imported in the vacuum tank.In vacuum tank, import oxygen, apply high frequency (for example 13.8MHz) high voltage.Consequently, oxygen ionization and produce plasma environment.DLC overlay film 25 reacts with oxygen plasma gas, becomes carbon dioxide or carbon monoxide.By implementing plasma etching, only removing mask member 27 unlapped parts is the DLC overlay film 25 of exposed portions serve, till exposing Cr overlay film 35.In other words, only remove near the DLC overlay film 25 of the portion of slot part 26 and baseline.
In the variation of above explanation, on the periphery sliding surface of shank 19 and baseline 22,23,24, form DLC overlay film 25.Afterwards, exposing the baseline part, covering under the state of other parts, remove the DLC overlay film 25 of baseline part with mask member 27.Therefore, portion does not form DLC overlay film 25 near baseline 22,23,24 and baseline, and can be simply in the periphery sliding surface of shank 19 near baseline 22,23,24 and baseline the part the portion form DLC overlay film 25.
[2] also can form DLC overlay film 25 as follows.For example, only ring element 28 as mask member is installed, promptly only ring element 28 (with reference to Figure 11) as mask member is installed at the annulus of the complete cycle that comprises baseline 22,23,24 of shank 19A at baseline 22,23,24 with along the peripheral part of baseline 22,23,24.Afterwards, in the periphery sliding surface of shank 19A, forming DLC overlay film 25 except the part along the peripheral part of baseline 22,23,24.In this case, after aiming at ground, the position installing ring member 28 that is formed at the slot part 26 on the shank 19A respectively, utilize the method formation DLC overlay film 25 same with the situation of the foregoing description.
As shown in figure 10, compare, in shank 19A,, therefore, significantly improved the durability of the shank 19A under the no oil providing condition owing to enlarged the part that is formed with DLC overlay film 25 with the shank 19 of the foregoing description.Because in the periphery sliding surface of shank 19A, do not form DLC overlay film 25 at peripheral part along baseline 22,23,24, therefore, become the metallic luster look along the peripheral part of baseline 22,23,24.Therefore, the operating personnel can and discern the position of baseline 22,23,24 easily by baseline 22,23,24 around the relation between the peripheral part of the metallic luster look of shank 19A with ring-type.In above-mentioned example, do not form DLC overlay film 25 at the annulus of the complete cycle that comprises baseline 22,23,24 of shank 19A.But, because baseline the 22,23, the 24th, black, therefore, also can on this baseline 22,23,24 in the annulus of the complete cycle of shank 19A, form DLC overlay film 25.At this moment, after installation has cut the ring element 28 of baseline 22,23,24 parts in the annulus of complete cycle of shank 19A, form DLC overlay film 25.
[3] also can form DLC overlay film 25 as follows.For example, use the pattern be formed with a plurality of circles shown in Figure 13 to form the mask member 36 in hole 37, in the periphery sliding surface of shank 19B, forming DLC overlay film 25 except the part that forms the 37 corresponding positions, hole with a plurality of patterns.The pattern of mask member 36 forms hole 37 and is arranged on baseline 22,23,24 with along the corresponding position of peripheral part of baseline 22,23,24.Pattern forms shank 19B can be located in hole 37 as the example of Figure 13 the complete cycle along the peripheral part of baseline 22,23,24, also can only be located at and baseline 22,23,24 corresponding parts.
In this case, utilize the same method of situation with the variation of explanation in [1], at first formation DLC overlay film 25 on the whole periphery sliding surface of shank 19B.Afterwards, covering under the state of shank 19B, remove DLC overlay film 25 with mask member 36.Consequently, can in shank 19B, form a plurality of recesses 29 (with reference to Figure 12) with a plurality of patterns formation 37 corresponding positions, hole.Above-mentioned a plurality of recess 29 plays the effect that lubricating grease accumulates the place, therefore, has significantly improved the durability of the shank 19B under the no oil providing condition.
[4] baseline that is formed on the outer peripheral face of shank 19,19A, 19B of embodiment and variation 1～3 is three.But the quantity of baseline is not limited to three, can be many.In this case, can change the area of DLC overlay film 25 in conjunction with the bar number of baseline.
[5], except DLC overlay film 25, also can form TiN overlay film, CrN overlay film as wear-resisting overlay film.
Claims (11)
1. needle bar of sewing machine, this needle bar of sewing machine by this bearing components supporting and can come and go along axis direction and move, and are come and gone by needle bar drive mechanism drives and to move in the bearing components of sewing machine frame, it is characterized in that,
Above-mentioned shank is installed on the baseline of the position on the above-mentioned needle bar drive device having expression on the outer peripheral face of above-mentioned shank;
In the periphery sliding surface relative with above-mentioned bearing components of above-mentioned shank, portion does not form wear-resisting overlay film near above-mentioned baseline, and the part near portion above-mentioned baseline is formed with wear-resisting overlay film.
2. needle bar of sewing machine according to claim 1 is characterized in that,
In above-mentioned periphery sliding surface, extended line part in the annulus of the complete cycle that comprises above-mentioned baseline of above-mentioned shank, above-mentioned at least baseline does not form wear-resisting overlay film, and is formed with above-mentioned wear-resisting overlay film in the part except above-mentioned annulus.
3. needle bar of sewing machine according to claim 1 is characterized in that,
In above-mentioned periphery sliding surface, in a plurality of circles that are arranged in above-mentioned shank peripheral part along above-mentioned baseline, do not form wear-resisting overlay film, and the part in above-mentioned a plurality of circles is formed with above-mentioned wear-resisting overlay film.
4. according to each described needle bar of sewing machine in the claim 1～3, it is characterized in that,
Above-mentioned wear-resisting overlay film is made of the DLC overlay film.
5. a Sewing machines is characterized in that,
This Sewing machines comprises each described needle bar of sewing machine in the claim 1～3.
6. a Sewing machines is characterized in that,
This Sewing machines comprises the described needle bar of sewing machine of claim 4.
7. film formation method, this film formation method is the film formation method that forms overlay film on needle bar of sewing machine, this needle bar of sewing machine is in the bearing components of sewing machine frame, also can come and go mobile along axis direction by this bearing components supporting, and come and go mobile by needle bar drive mechanism drives, it is characterized in that
This method comprises:
The 1st operation, cover with mask member be formed on the above-mentioned shank outer peripheral face and expression above-mentioned shank is installed on the baseline of the position on the above-mentioned needle bar drive device and above-mentioned baseline near under the state of portion, on the periphery sliding surface relative of above-mentioned shank, form wear-resisting overlay film with above-mentioned bearing components;
The 2nd operation is removed the aforementioned mask member.
8. film formation method according to claim 7 is characterized in that,
In above-mentioned the 1st operation, under the state of extended line part in the annulus of the complete cycle that comprises above-mentioned baseline that covers above-mentioned shank with above-mentioned mask member, above-mentioned at least baseline, form above-mentioned wear-resisting overlay film.
9. film formation method, this film formation method is the film formation method that forms overlay film on the needle bar of sewing machine, this needle bar of sewing machine is in the bearing components of sewing machine frame, also can come and go mobile along axis direction by this bearing components supporting, and come and go mobile by needle bar drive mechanism drives, it is characterized in that
This method comprises:
The 1st operation is being formed on the above-mentioned shank outer peripheral face and expression is installed on above-mentioned shank on the periphery sliding surface relative with above-mentioned bearing components of the baseline of the position on the above-mentioned needle bar drive device and above-mentioned shank and forms wear-resisting overlay film;
The 2nd operation under near the state of the part the portion above-mentioned baseline in cover above-mentioned periphery sliding surface with mask member, is removed the above-mentioned wear-resisting overlay film that is formed near the portion above-mentioned baseline;
The 3rd operation is removed the aforementioned mask member.
10. film formation method according to claim 9 is characterized in that,
In above-mentioned the 2nd operation, covering under the state of above-mentioned periphery sliding surface to have the aforementioned mask member that a plurality of patterns that are arranged in above-mentioned shank peripheral part along above-mentioned baseline form the hole, removing and be formed on and above-mentioned a plurality of patterns form the corresponding locational above-mentioned wear-resisting overlay film in hole.
11. each described film formation method is characterized in that according to Claim 8～10,
Above-mentioned wear-resisting overlay film is made of the DLC overlay film.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008071115 | 2008-03-19 | ||
| JP2008-071115 | 2008-03-19 | ||
| JP2008071115A JP2009225822A (en) | 2008-03-19 | 2008-03-19 | Needle bar of sewing machine and sewing machine |
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| Publication Number | Publication Date |
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| CN101538783A true CN101538783A (en) | 2009-09-23 |
| CN101538783B CN101538783B (en) | 2012-08-29 |
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| CN2009101294105A Expired - Fee Related CN101538783B (en) | 2008-03-19 | 2009-03-18 | Sewing machine needle bar, sew machine and sewing machine needle bar menbrane forming method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878527A (en) * | 2015-06-10 | 2015-09-02 | 吴江市震宇缝制设备有限公司 | Multi-needle sewing machine needle seat allowing quick mounting and dismounting |
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| US5056444A (en) * | 1990-08-29 | 1991-10-15 | Melco Industries, Inc. | Method and apparatus for automatically steering and adjusting the height of a needle in a chenille type embroidery machine |
| JP4722300B2 (en) * | 2001-01-29 | 2011-07-13 | Ｊｕｋｉ株式会社 | Needle bar stroke adjustment device |
| JP4438936B2 (en) * | 2003-12-10 | 2010-03-24 | ブラザー工業株式会社 | Manufacturing method of sliding parts |
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2008
- 2008-03-19 JP JP2008071115A patent/JP2009225822A/en active Pending
-
2009
- 2009-03-18 CN CN2009101294105A patent/CN101538783B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878527A (en) * | 2015-06-10 | 2015-09-02 | 吴江市震宇缝制设备有限公司 | Multi-needle sewing machine needle seat allowing quick mounting and dismounting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009225822A (en) | 2009-10-08 |
| CN101538783B (en) | 2012-08-29 |
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