WO2016017938A1 - Dispositif de support pour arbre supérieur de machine à coudre - Google Patents

Dispositif de support pour arbre supérieur de machine à coudre Download PDF

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Publication number
WO2016017938A1
WO2016017938A1 PCT/KR2015/006660 KR2015006660W WO2016017938A1 WO 2016017938 A1 WO2016017938 A1 WO 2016017938A1 KR 2015006660 W KR2015006660 W KR 2015006660W WO 2016017938 A1 WO2016017938 A1 WO 2016017938A1
Authority
WO
WIPO (PCT)
Prior art keywords
upper shaft
bush
sewing machine
bearing device
lead groove
Prior art date
Application number
PCT/KR2015/006660
Other languages
English (en)
Korean (ko)
Inventor
김광연
Original Assignee
김광연
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광연 filed Critical 김광연
Priority to CN201580028041.4A priority Critical patent/CN106471173B/zh
Publication of WO2016017938A1 publication Critical patent/WO2016017938A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/30—Details
    • D05B69/32—Vibration-minimising devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/30—Details
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B71/00—Lubricating or cooling devices

Definitions

  • the present invention relates to an upper shaft bearing device of a sewing machine, and more particularly, to an upper shaft bearing device of a sewing machine which prevents the flow and shaking of the upper shaft in installing the upper shaft of the sewing machine along an angle arm.
  • Drive shaft in the sewing machine is divided into the upper shaft 12 is installed along the angle arm 11 and the lower shaft 14 is installed along the bed 13 are interlocked with each other.
  • the upper shaft 12 reciprocates the needle for lock stitch on the feeder, and the lower shaft 14 lowers the bobbin 15 which supplies the lower thread (lower thread) under the feeder, the drum 16, and the rotary hook 17 in order. (14).
  • FIG. 2 shows the upper shaft 12 and the lower shaft 14 of the sewing machine 10.
  • the vertical shaft 18 is an example configured to interlock the upper shaft 12 and the lower shaft 14 through the power transmission gear 19.
  • the upper axis of the sewing machine is the wear associated with the sliding and rotational movements, or the resistance caused by the sliding and the rotational movements is determined by the sliding and rotational movement speeds and the loads applied during the sliding and rotational movements, that is, the PV value determined by the surface pressure. It depends greatly. This means that the faster the speed and the higher the surface pressure, the higher the friction rate increases the frictional resistance and the greater the wear.
  • the upper shaft of the existing sewing machine is configured to assist the rotation of the upper shaft by assembling a crank head at one end and assembling a few bearing metal bushes along the longitudinal direction of the upper shaft.
  • the upper shaft is difficult to continuously hold the inter-axis noise and vibration for a long time due to the wear and deformation of the bush, and it is difficult to continuously maintain the rotation of the shaft in a high precision rotation state due to the squeezing of the bush.
  • the present invention has been made to solve the problems of the prior art, an object of the present invention, the upper shaft bearing of the sewing machine to prevent the flow and shaking of the upper shaft and to prevent squeezing and wear in installing the upper shaft of the sewing machine along the angle arm
  • the purpose is to provide a device.
  • Still another object of the present invention is to provide an upper shaft bearing device of a sewing machine which reduces the squeeze and wear of the bush in laying the upper shaft of the sewing machine along the angle arm, thereby improving durability of the sewing machine.
  • the upper shaft bearing device of the sewing machine is coupled to one end and the other end is coupled to the power transmission medium is the upper shaft is horizontally arranged on the angle arm of the sewing machine; At least one spiral lead groove processed at an outer diameter of the upper shaft; A first bush mounted at a position adjacent to the crank mounted on the upper shaft and mounted along the spiral lead groove; And mounted along one end of the upper shaft away from the first bush to fix the upper shaft to the angle arm together with the first bush and guide the rotation of the upper shaft while supporting the self-weight of the upper shaft and the load applied to the upper shaft.
  • the upper shaft bearing device of the sewing machine comprising a second bush ;.
  • the crank is coupled to one end and the other end is coupled to the power transmission medium is the upper shaft is horizontally arranged on the angle arm of the sewing machine; At least one spiral lead groove processed at an outer diameter of the upper shaft; A first bush mounted at a position adjacent to the crank mounted on the upper shaft and mounted along the spiral lead groove; A first shaft mounted on one end of the upper shaft away from the first bush, the first shaft being fixed along the first arm to the angle arm, and mounted along the spiral lead groove to guide rotation of the upper shaft while supporting the weight of the upper shaft and the load applied to the upper shaft. 2 bush; And a third bush mounted to be located close to the first bush or the second bush based on the middle point of the upper shaft or the middle point of the gap between the first bush and the second bush. It features.
  • the upper shaft is characterized in that the hollow shaft formed with a hollow hole along the longitudinal direction.
  • the upper shaft bearing device of the sewing machine according to the embodiment of the present invention, the spiral lead groove of the upper shaft is characterized in that the upper shaft bearing device of the sewing machine machined at the position where the first bush and the second bush contact.
  • the pitch of the spiral lead groove of the upper shaft on which the first bush is mounted is characterized in that the upper shaft bearing device of the sewing machine is machined in the left-hand direction.
  • the pitch of the spiral lead groove of the upper shaft on which the second bush is mounted is characterized in that the upper shaft bearing device of the sewing machine is machined in the right-hand direction.
  • the upper shaft bearing device of the sewing machine is characterized in that the upper shaft bearing device of the sewing machine is provided with a stopper slit for preventing the axial slip and rotational slip of the third bush on the upper shaft.
  • the first bush of the upper shaft bearing device of the sewing machine is characterized by the upper shaft bearing device of the sewing machine including a taper head for narrowing the crank and the contact section.
  • the second bush of the upper shaft bearing device of the sewing machine is characterized by the upper shaft bearing device of the sewing machine including a tapered head that narrows the contact cross section with respect to the power transmission medium.
  • the screw hole is formed in each of the upper shaft and the upper shaft bearing device of the sewing machine formed grooves corresponding to the screw holes respectively; It features.
  • the power transmission medium of the upper shaft bearing device of the sewing machine is characterized in that the upper shaft bearing device of the sewing machine, characterized in that any one selected from a gear or a belt pulley.
  • the upper shaft bearing device of the sewing machine in installing the upper shaft of the sewing machine along the angle arm, it prevents the flow and shaking of the upper shaft and prevents squeeze and wear to reduce the driving noise of the sewing machine and to replace the bush and It has the effect of increasing the maintenance intervals and the service life of the upper shaft, reducing the eccentric wear and eccentric rotation of the upper shaft, reducing the failure of the entire sewing machine system and maintaining the durability of the sewing machine.
  • FIG. 1 is a schematic view of a typical sewing machine body.
  • Figure 2 is a schematic diagram of the upper and lower shaft portions of the sewing machine drive unit.
  • Figure 3 is an exploded view of the upper shaft of the sewing machine according to an embodiment of the present invention.
  • FIG 5 is a first bush according to an embodiment of the present invention (a) is a front view, (b) is a cross-sectional view taken along the line A-A of (a).
  • FIG. 6 is a cross-sectional view taken along the line B-B in FIG. 5 (a).
  • FIG. 7 is a front view of a second bush according to an embodiment of the present invention.
  • FIG. 8 is a cross-sectional view taken along the line C-C in FIG.
  • FIG. 9 is a cross-sectional view taken along the line D-D of FIG. 7.
  • FIG. 10 is a front view of a third bush according to an embodiment of the present invention.
  • 11 is a cross-sectional view taken along the line E-E of FIG.
  • the upper shaft bearing device of the sewing machine is configured to serve to rotate the upper shaft while fixing the upper shaft of the rotating sewing machine at a predetermined position and supporting the weight of the upper shaft and the load applied to the shaft.
  • FIG. 3 shows an example of the arrangement of the upper shaft bearing device of the sewing machine according to an embodiment of the present invention.
  • the crank 230 is assembled at one end of the upper shaft 100, and the first bush 200, the third bush 220, and the second bush 210 are sequentially disposed on the upper shaft 100, respectively. It is assembled and configured to accumulate the upper shaft 100 along the long direction of the angle arm to help smooth rotation of the upper shaft 100.
  • the first bearing 200, the second bush 210 and the third bush 220, the upper shaft bearing device is arranged along the upper shaft 100 in order to prevent the noise and vibration between the shaft by abrasion, deformation, etc. of each bush. It is configured to continuously hold for a long time and prevent the sintering of the bush and the like to support the upper shaft 100 for a long time in a high precision rotation state.
  • the crank 230 is coupled to one end and the other end is coupled to the power transmission medium (shown in the bevel gear) and is horizontally laid on the angle arm of the sewing machine.
  • the upper shaft 100 is configured.
  • At least one spiral lead groove 130 or 130a is formed at an outer diameter of the upper shaft 100.
  • the first bush 200 is mounted at a position adjacent to the crank 230 adjacent to the upper shaft 100 along the spiral lead groove 130 of the upper shaft 100.
  • the first bush 200 is mounted along the spiral lead groove 130 to guide the rotation of the upper shaft while supporting the weight of the upper shaft 100 and the load applied to the upper shaft.
  • the second bush 210 for fixing the upper shaft 100 to the angle arm together with the first bush 200 is mounted at one end of the upper shaft separated from the first bush 200.
  • the second bush 210 is mounted along the spiral lead groove 130a to guide the rotation of the upper shaft while supporting the weight of the upper shaft 100 and the load applied to the upper shaft.
  • the crank 230 is coupled to one end and the other end is coupled to the power transmission medium is configured to the upper shaft 100 is horizontally arranged on the angle arm of the sewing machine.
  • At least one spiral lead groove 130 or 130a is formed at an outer diameter of the upper shaft 100.
  • the first bush 200 is mounted at a position adjacent to the crank 230 adjacent to the upper shaft 100 along the spiral lead groove 130 of the upper shaft 100.
  • the first bush 200 is mounted along the spiral lead groove 130 to guide the rotation of the upper shaft while supporting the weight of the upper shaft 100 and the load applied to the upper shaft.
  • the second bush 210 for fixing the upper shaft 100 to the angle arm together with the first bush 200 is mounted at one end of the upper shaft separated from the first bush 200.
  • the second bush 210 is mounted along the spiral lead groove 130a to guide the rotation of the upper shaft while supporting the weight of the upper shaft 100 and the load applied to the upper shaft.
  • the third bush 220 which is biased toward the first bush or the second bush near the middle point of the upper shaft 100 or the middle point between the first bush 200 and the second bush 210, is mounted. Consists of the upper shaft bearing device of the sewing machine comprising a).
  • reference numeral 203 is a shaft groove formed in the first bush
  • 213 is a shaft groove formed in the second bush
  • 223 is a shaft groove formed in the third bush.
  • the present invention may be of a hollow shaft type with a hollow hole 110 along the longitudinal direction of the upper shaft (100).
  • the upper shaft 100 has a hollow hole 110, it is advantageous for high speed rotation by reducing the weight loss and rotational load.
  • the spiral lead grooves 130 and 130a of the upper shaft 100 are processed at positions where the first bush 200 and the second bush 210 are in contact with each other. Placing a spiral lead groove enhances the binding force with respect to the engagement of the first bush 200 and the second bush 210 and is also advantageous for positioning each bush.
  • the pitch of the spiral lead groove 130 on which the first bush 200 is mounted is preferably processed in the left-hand thread direction.
  • the pitch of the spiral lead groove 130a on which the second bush 210 is mounted is preferably processed in the right screw direction. In the case of dividing the pitch direction of the spiral lead groove, it is possible to clearly distinguish the first bush and the second bush and to join the upper bush. That is, the coupling failure and the assembly failure due to the misinsertion of the first bush and the second bush can be prevented.
  • the upper shaft 100 preferably includes a stopper slit 120 that prevents axial slip and rotational slip of the third bush 220.
  • the third bush 220 is mounted between the gap between the first bush and the second bush and mounted to the upper shaft 100 in a rigid state through the stopper slit 120.
  • the first bush 200 is located on the left side, and the second bush 210 is located on the right side.
  • the third bush 220 is placed in an intermediate position between them, and these first to third bushes support the rectangular upper shaft 100 to be balanced from left to right, and a solid bearing support that balances and supports through the middle bush. The structure is shown.
  • the first bush 200 preferably has a tapered head 201 surface that narrows the contact surface with the crank 230. A portion of the tapered head 201 formed in the first bush 200 forms a maximum diameter and a step of the first bush 200 and reduces the contact area by the step so as to reduce friction between the first bush 200 and the crank 230. To reduce wear and lower wear.
  • the second bush 210 may include a taper head 211 that narrows the contact cross section with respect to the power transmission medium.
  • the tapered head 211 reduces contact area with respect to a rotating body such as a power transmission drive gear or a belt pulley to reduce friction and reduce wear between the second bush 210 and the power transmission medium.
  • Screw holes 202, 212, and 222 are formed in the first bush 200, the second bush 210, and the third bush 220, and a screw (not shown) is inserted through the screw hole to form an upper shaft ( 100 separately assembled firmly. Screw holes 202, 212, and 222 are formed in the first bush 200, the second bush 210, and the third bush 220, and the grooves corresponding to the screw holes are formed in the upper shaft 100. 102a) 112a and 122a may be formed to couple the bushes to the upper shaft through a screw or the like.
  • the upper shaft bearing device of the sewing machine when the upper shaft 100 rotates in the angle arm of the sewing machine under the rotation of a drive source (not shown) such as an external motor, the first bush 200 and the first The second bush 210 and the third bush 220 induce an even rotation of the upper shaft while supporting the load applied to the self-weight and the upper shaft of the upper shaft 100 without any force in the equal balance.
  • a drive source such as an external motor
  • the first bush 200 and the second bush 210 installed on the upper shaft 100 are mounted along the spiral lead grooves 130 and 130a respectively formed on the outer diameter of the upper shaft 100 to block the axial slip so that the upper shaft
  • the third bush 220 is positioned on the upper shaft 100 in a rigid state through the stopper slit 120 to support near the central portion of the upper shaft 100, the strength of the celebration To increase the durability of the upper shaft.
  • the upper shaft bearing device of the sewing machine including the first and second bushes and the third bush installed on the upper shaft prevents the flow and shaking of the upper shaft and prevents seizure and wear in installing the upper shaft of the sewing machine along the angle arm. Reduces drive noise, increases bushing replacement and maintenance intervals, and increases the service life of the upper shaft, and reduces eccentric wear and eccentric rotation of the upper shaft, reducing the failure of the entire sewing machine system to maintain the permanent usability of the sewing machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

L'invention concerne un dispositif de support pour un arbre supérieur d'une machine à coudre. La présente invention concerne le dispositif de support pour l'arbre supérieur d'une machine à coudre, comprenant : l'arbre supérieur ayant une extrémité qui est accouplée à une manivelle et l'autre extrémité qui est accouplée à un élément de distribution de force d'entraînement, l'arbre supérieur étant monté horizontalement sur un bras d'angle de la machine à coudre ; au moins une rainure en sillon hélicoïdal formée sur la circonférence extérieure de l'arbre supérieur ; une première douille installée dans une position adjacente à une zone entourant la manivelle, qui est installée sur l'arbre supérieur, et le long de la rainure en sillon hélicoïdal ; et une seconde douille qui est installée sur une première extrémité de l'arbre supérieur qui est éloignée de la première douille et le long de la rainure en sillon hélicoïdal, de façon à fixer l'arbre supérieur au bras d'angle conjointement avec la première douille et guider la rotation de l'arbre supérieur tout en soutenant le poids de l'arbre supérieur et une charge portée par l'arbre supérieur, ce qui empêche un mouvement, une agitation et une abrasion de l'arbre supérieur lorsque l'arbre supérieur de la machine à coudre est installé le long du bras d'angle pour réduire le bruit d'entraînement de la machine à coudre et prolonger des cycles de maintenance et de remplacement de douille.
PCT/KR2015/006660 2014-07-29 2015-06-29 Dispositif de support pour arbre supérieur de machine à coudre WO2016017938A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201580028041.4A CN106471173B (zh) 2014-07-29 2015-06-29 缝纫机上轴的轴承装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020140096555A KR101527811B1 (ko) 2014-07-29 2014-07-29 재봉틀의 상축 베어링 장치
KR10-2014-0096555 2014-07-29

Publications (1)

Publication Number Publication Date
WO2016017938A1 true WO2016017938A1 (fr) 2016-02-04

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Application Number Title Priority Date Filing Date
PCT/KR2015/006660 WO2016017938A1 (fr) 2014-07-29 2015-06-29 Dispositif de support pour arbre supérieur de machine à coudre

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KR (1) KR101527811B1 (fr)
CN (1) CN106471173B (fr)
WO (1) WO2016017938A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105200681B (zh) * 2015-10-23 2018-09-25 拓卡奔马机电科技有限公司 压脚提升轴储油润滑结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09164286A (ja) * 1995-12-13 1997-06-24 Brother Ind Ltd ミシンの給油装置
KR200353816Y1 (ko) * 2004-04-02 2004-06-22 썬스타 특수정밀 주식회사 진동저감 미싱
JP2007175150A (ja) * 2005-12-27 2007-07-12 Brother Ind Ltd ミシンの軸受け構造
KR20090006063U (ko) * 2007-12-14 2009-06-18 썬스타 산업봉제기계 주식회사 봉제장치의 진동감쇠구조

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201250337Y (zh) * 2008-08-22 2009-06-03 阮孟定 一种电动直驱缝纫机的驱动主轴
CN201839130U (zh) * 2010-10-08 2011-05-18 新杰克缝纫机股份有限公司 缝纫机的电机轴与上轴的连接结构
CN102888722B (zh) * 2011-07-22 2018-02-16 Juki株式会社 缝纫机

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09164286A (ja) * 1995-12-13 1997-06-24 Brother Ind Ltd ミシンの給油装置
KR200353816Y1 (ko) * 2004-04-02 2004-06-22 썬스타 특수정밀 주식회사 진동저감 미싱
JP2007175150A (ja) * 2005-12-27 2007-07-12 Brother Ind Ltd ミシンの軸受け構造
KR20090006063U (ko) * 2007-12-14 2009-06-18 썬스타 산업봉제기계 주식회사 봉제장치의 진동감쇠구조

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Publication number Publication date
CN106471173A (zh) 2017-03-01
KR101527811B1 (ko) 2015-06-10
CN106471173B (zh) 2020-04-03

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