WO2013073830A1 - Sewing machine and needle-switching device adapted therefor - Google Patents

Sewing machine and needle-switching device adapted therefor Download PDF

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Publication number
WO2013073830A1
WO2013073830A1 PCT/KR2012/009593 KR2012009593W WO2013073830A1 WO 2013073830 A1 WO2013073830 A1 WO 2013073830A1 KR 2012009593 W KR2012009593 W KR 2012009593W WO 2013073830 A1 WO2013073830 A1 WO 2013073830A1
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WO
WIPO (PCT)
Prior art keywords
needle bar
pair
sewing
needle
sewing machine
Prior art date
Application number
PCT/KR2012/009593
Other languages
French (fr)
Korean (ko)
Inventor
이동규
Original Assignee
주식회사 썬스타
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Publication date
Priority claimed from KR1020120125274A external-priority patent/KR101949888B1/en
Application filed by 주식회사 썬스타 filed Critical 주식회사 썬스타
Publication of WO2013073830A1 publication Critical patent/WO2013073830A1/en

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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B39/00—Workpiece carriers
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/10—Needle bars for multiple-needle sewing machines

Definitions

  • the present invention relates to a sewing machine having a rotatable sewing head, and more particularly, has a structure in which the sewing head is rotated to enable perfect sewing without hitch stitch when sewing airbags, bags, shoes, etc.
  • the present invention relates to a sewing machine and a needle changing device suitable for the same, which can contribute to the improvement of the quality and productivity of the sewing material.
  • airbags, bags, shoes, etc. are not only thick sewing material, but also a lot of sewing lines of a difficult shape, such as circular, curved, oblique line, etc.
  • the conventional sewing machine generates a hitch stitch (hitch stitch) according to the sewing direction, As such, the shape of the stitches is uneven, resulting in a problem of deterioration of product quality.
  • FIG. 1 illustrates an example of a conventional sewing machine, wherein an arm part 40 including a head part is positioned on an upper side of the table 10, and a bed part (not shown) including a hook is disposed below the table 10. It is positioned, consisting of a coupling portion 60 connecting the arm portion 40 and the bed portion, the hook of the head portion and the bed portion is to sew the sewing object fixed to the sewing frame 50 by cooperation.
  • Such a sewing machine was able to move the sewing frame 50 in the X-axis or Y-axis direction due to the arm, bed structure was possible to process the sewing object of a limited area.
  • FIG. 2A to 2B illustrate an example in which hitch stitches are generated in a conventional sewing machine.
  • two of four sides are perfect stitches in which P is a perfect stitch, and one side is normal and H / P section where bad stitches are mixed. It can be seen that one side is an H section.
  • FIG. 2C shows the distribution of H-P Stitch for each section after sewing.
  • the section of the P section (Perfect Stitch) and the H section (Hitch Stitch) was almost 1: 1.
  • the present invention has been made in order to solve the above problems, and sewing while rotating the head portion and the bed portion to implement the perfect stitch between the whole in the sewing machine for sewing airbags, bags, shoes, etc., provided with a pair of needle bar It is an object of the present invention to provide a sewing machine.
  • Another object of the present invention is to provide a sewing machine in which hitches are not generated by rotating a pair of drums corresponding to a pair of needle bars facing each other.
  • Still another object of the present invention is to provide a sewing machine having a book base fine adjusting device in which a pair of book bases supporting a pair of books corresponding to a pair of needle bars are simultaneously conveyed by one adjusting screw. .
  • Still another object of the present invention is to provide a needle changing device suitable for each switching operation of a pair of needle bars.
  • a bed part installed at a lower part of the head part, the bed part rotating means being provided to rotate the sewing bed within a set range, and having a pair of books corresponding to a pair of needle bars;
  • a sewing machine including a.
  • a pair of books corresponding to the pair of needle bars and rotating in a direction facing each other in accordance with the conveying direction of the cloth.
  • a book base fine adjusting device for fine-adjusting a position between a pair of book bases supporting a pair of books corresponding to a pair of needle bars with a single adjusting screw.
  • Acupuncture device of the present invention for achieving the above another object
  • Each of the needle bar is provided with a fixing pin insertion groove under the needle bar
  • a needle bar receiving tube into which the pair of needle bar is inserted
  • a clutch lever base installed on one side of the needle bar receiving tube, through the clutch lever base
  • a pair of needle bar lower fixing pins inserted into each of the needle bar lower fixing pin insertion grooves, the clutch lever base and the needle bar lower fixing pins are hinged to each of the needle bar lower fixing pins into the needle bar lower fixing pin insertion grooves, respectively.
  • a needle bar return pin is provided to release the latch state of a pair of needle bar latches.
  • a slide block installed at an upper side of the needle bar holder and provided with a protrusion for selectively contacting the pair of clutch levers and the needle bar return pin;
  • Each of the needle bar is provided with a fixing pin insertion groove on the needle bar
  • the needle bar is preferably provided with a seesaw lever hinged between the needle pin fixing grooves on the needle bar and the needle pin fixing pin insertion grooves to move the seesaw by the needle bar fixing pins.
  • Sewing machine by sewing the head and the bed is rotated, the direction of the sewing thread can be kept constant, so in the sewing machine for sewing airbags, bags, shoes, etc. It has the effect of making it possible.
  • the sewing machine according to the present invention has the effect of simultaneously transferring a pair of book base with one adjustment screw.
  • the angle switching device can activate one or both of the pair of needle bar has the effect of facilitating the angle switching operation.
  • FIG. 1 is a perspective view showing an example of a conventional sewing machine
  • 2a to 2b is a view showing an example of hitch stitch generated in a conventional sewing machine
  • Figure 2c is a diagram showing the H-P Stitch distribution for each section after sewing
  • FIG. 3 is an overall perspective view of a sewing machine according to the present invention.
  • FIG. 4 is a perspective view showing a head of the present invention.
  • FIG. 5 is a perspective view showing a bed of the present invention
  • FIG. 6 is an exploded perspective view showing the head lowering means of the present invention.
  • 7a and 7b is a view showing an embodiment of the rotary drive gear of the present invention.
  • FIG. 8a to 8d is a perspective view showing the configuration of a sewing head of the sewing machine according to the present invention.
  • FIG. 9 is a view showing the angle switching operation in the sewing machine according to the present invention.
  • FIG. 10 shows an exploded perspective view of the needle bar holder.
  • FIG. 11 is a view illustrating a needle change operation by the clutch lever and the needle bar fixing pin shown in FIG. 10.
  • FIG. 13 illustrates a correspondence relationship between a pair of needle bars and a pair of books provided in a sewing bed corresponding to the sewing machine according to the present invention.
  • 14A and 14B show stitches by a pair of drums rotating in the same direction and a pair of drums rotating in a direction facing each other, respectively.
  • 15 is a cross-sectional view showing the configuration of a book base fine adjusting device according to the present invention.
  • Fig. 16 is a perspective view showing the configuration of a book base fine adjustment device according to the present invention.
  • head portion 101 head rotating motor
  • the head fixed sewing machine is the head portion 100 is located on the upper side of the table 10, the head portion 100 is to sew the sewing object fixed to the sewing frame (50).
  • the table 10 is a rectangular plate where the sewing object is placed.
  • Support posts 22 are vertically formed at both side ends of the table 10, and an upper beam 20 in a horizontal direction is provided at an upper end of the support posts 22.
  • the head part 100 includes a sewing head 109 having a pair of sewing needles which are reciprocated up and down, a lower shaft driving motor for driving a sewing needle, and a head rotating means for rotating the sewing head 109 ( 103).
  • the bed unit 300 includes a lower bed drive motor for driving the sewing bed 309, a pair of books 1002 and 1004 installed under the sewing bed 309, and a rotating bed of the sewing bed 309.
  • Bed portion rotating means 303 is included.
  • FIG 3 is an overall perspective view showing a sewing machine according to the present invention
  • Figure 4 is a perspective view showing the head of the present invention
  • Figure 5 is a perspective view showing the bed of the present invention.
  • the head fixed sewing machine is the head portion 100 is located on the upper side of the table 10, the head portion 100 is to sew the sewing object fixed to the sewing frame 50 .
  • the table 10 is a rectangular plate where the sewing object is placed.
  • Long side guide holes 12 are formed at both side surfaces of the table 10 at the front and the rear.
  • the guide hole 12 is a long hole formed to transmit the movement of the Y-axis feed means below the table 10 to the sewing frame 50 above the table 10.
  • Support posts 22 are vertically formed at both side ends of the table 10, and an upper beam 20 in a horizontal direction is provided at an upper end of the support posts 22.
  • the upper beam 20 is preferably composed of a square steel pipe, the head portion 100 is coupled to the front in the center. Between the head 100 and the upper beam 20, the head lowering means 210 for lowering the sewing head 109 equipped with a pair of sewing needles which are reciprocated up and down to the working position or to the standby position Is preferably provided.
  • the head lifting means 210 is built up using the actuator support bracket 242 to provide a driving force for raising and lowering the sewing head 109.
  • Sewing head 109 is fastened to the center of the front portion and at the same time the upper end is composed of a lifting plate 230 that is connected to the head connection bracket 244 connected to the driving portion of the elevating actuator 240.
  • Both ends of the rear portion of the elevating plate 230 are fastened to the guide means 250 such as the guide rail 252 and the guide fastener 254 for stable and reliable elevating operation.
  • Guide means 250 is formed on both sides of the front portion of the support plate 260, the actuator support bracket 242 for mounting and supporting the lifting and lowering actuator 240 is fixed to the center of the rear portion of the support plate 260 .
  • Head elevating means 210 is a elevating plate that is connected to the front end of the head connecting bracket 244, the head connecting bracket 244 is connected to the driving unit of the elevating actuator 240 is driven ( 230 is driven along the guide means 250 is formed in a structure in which the sewing head 109 is fastened up and down fastened on the front portion of the elevating plate 230.
  • the head part 100 includes a sewing head 109 having a pair of sewing needles which are vertically reciprocated and driven, a lower shaft driving motor (not shown) for driving the sewing needle, and a head for rotating the sewing head 109. And a secondary rotating means (103).
  • the head rotating means 103 is provided with a rotating motor 101 as a power source, and is connected to a drive shaft of the rotating motor 101 to sew the driving force of the rotating motor 101 to the sewing head 109. It is provided with a head transmission member for transmitting to the driven shaft for rotating.
  • the head rotating means 103 is a driven shaft (not shown) rotated by the driving force of the rotating motor 101 transmitted through the head transmission member, and is installed on the driven shaft to rotate around the driven shaft Head 109.
  • a rotation drive gear 102 is provided as the head transmission member, and the rotation drive gear 102 decelerates the rotation speed of the rotation motor 101 and then sewing head ( Bevel gears were used to rotate 109).
  • the bevel gear applied to the rotation drive gear 102 of the present invention is installed at an angle at which the drive shaft and the driven shaft cross at right angles to reduce the rotational speed of the drive shaft to rotate the driven shaft.
  • 7a and 7b is a view showing an embodiment of a rotation drive gear according to the present invention.
  • the drive shaft 101a and the driven shaft 101b of the rotating motor 101 are installed at right angles, and the bevel gear 102a provided on the drive shaft 101a and the driven shaft 101b engaged therewith.
  • the bevel gear 102b has a structure capable of rapidly reducing the number of revolutions and outputting the bevel gear 102b.
  • the driving force of the reduced speed after driving the back driving that is, the output shaft (drive shaft) by rotating the input shaft (drive shaft) and the speed of the input shaft is reduced.
  • the bed part 300 rotates the sewing bed 309, a lower shaft drive motor for driving the pair of books 1002 and 1004 installed under the sewing bed 309, and the sewing bed 309.
  • Bed portion rotating means 303 to make.
  • the rotating unit 303 of the bed unit includes a rotating motor 301 as a power source, and is connected to a drive shaft of the rotating motor 301 to sew the driving force of the rotating motor 301 to the sewing bed 309.
  • Bed portion transmission member for transmitting to the driven shaft to rotate is provided.
  • the bed rotating means 303 is a driven shaft (not shown) rotated by the driving force of the rotating motor 301 transmitted through the bed transmission member, and is installed on the driven shaft to be rotated around the driven shaft Bed 309.
  • the rotation drive gear 302 is provided, and the rotation drive gear 302 decelerates the rotation speed of the rotation motor 301 and then sewing the sewing bed at a reduced rotation speed ( Bevel gears were used to rotate the wheels.
  • the bed transmission member is made of a bevel gear installed at an angle at which the drive shaft and the driven shaft cross at a right angle, and has the same structure and features as the head transmission member of the head rotation means described above, so a description thereof will be omitted. .
  • the bed transmission member not only the above-described rotational drive gear but also other kinds of power transmission members such as a timing belt and the like can be used.
  • reference numerals 110 and 310 denote slip rings for supplying current to the respective rotating motors.
  • the lower shaft driving motor for driving the lower shaft installed in the lower side of the sewing bed 309 is simultaneously driven in synchronization with the upper shaft driving motor (not shown) of the head unit 100, and the rotation motor 301 of the bed unit 300 is rotated. Is installed to be driven together in synchronization with the amount of motion of the rotation motor 101 of the head portion 100.
  • FIG. 8A to 8D illustrate the needle changing device related to the needle changing operation in the sewing machine according to the present invention.
  • a pair of needle posts 802, 804 and actuator 803 for holding a sewing needle are shown.
  • the needle bars 802 and 804 are driven by the upper shaft drive motor as a power source, and the actuator 803 is provided to drive the slide block 814 to deactivate one side of the needle bars 802 and 804 or to activate both sides.
  • activation refers to a state in which the needle bar 802, 804 is driven up and down.
  • the needle bars 802 and 804 are provided with fixing grooves for fixing the needle bars in each of the needle bars 802 and 804, and the needle bars 802 and 804 are separated from the needle bar holders 830 by selectively inserting or fixing the fixing pins at the same time. In addition, up and down movement.
  • the actuator 803 may be an air cylinder or a solenoid, and the present invention will be described based on the solenoid.
  • the driving force of the actuator 803 is provided to the slide block 814 via the solenoid shaft connecting lever 806, the solenoid block movement shaft 808, the slide block movement shaft bracket 810, and the slide block movement lever 812.
  • the slide block 814 is moved left and right by driving the actuator 803.
  • a projection 814a for pressing the clutch levers 832 (832a, 832b) or the needle bar return pin 848 is provided to protrude downward.
  • Needle bar holder 830 is for latching a pair of needle bar (802, 804) to move up and down.
  • the needle bar holder 830 operates in conjunction with the slide block 814 to selectively activate the needle bar 802 or 804 on one side or to activate both the needle bars 802 and 804 on both sides. .
  • the stopper 860 is for holding the needle bars 802 and 804 not latched by the needle bar fixing pins 838a and 838b so as not to fall.
  • the actuator 803, the slide block 814, the needle bar holder 830, and the stopper 860 constitute a needle changing device in the summary of the present invention.
  • Angular switching means that the two needle bar (802, 804) to sew and continue sewing after turning in the vertical direction.
  • two needle bars 802 and 804 are sewn side by side, and in order to switch directions at the point h in the drawing and proceed in the direction of the arrow, a stitch (a) is taken by the left needle bar 802.
  • the needle bar 804 on the right side should remain inactive while going one stitch b further in a vertical direction.
  • the slide block 814 and the actuator 803 are provided to deactivate the needle bar 802 or 804 on one side in the angular switching operation.
  • the needle bar holder 830 includes a needle bar receiving tube 852 and a clutch lever base 854. Needle bar receiving tube 852 is for receiving a pair of needle bar (802, 804), the clutch lever base 854 is preferably formed integrally on one side of the needle bar receiving tube (852).
  • the needle bar 802 and 804 are provided with fixing pin insertion grooves 802a and 804a under the needle bar, fixing pin insertion grooves 802b and 804b on the needle bar and the seesaw levers 802c and 804c.
  • the seesaw levers 802c and 804c move the seesaw around a hinge (not shown) provided between the needle bar fixing pin insertion grooves 802a and 804a and the needle bar fixing pin insertion grooves 802b and 804b.
  • the driving force for this is provided by the fixing pins 838a and 838b under the needle bar.
  • Needle bar holder 830 is for latching one or both of the needle bar (802, 804) to move up and down.
  • the needle bar holder 830 penetrates the needle bar through the needle bar receiving tube 852 into which the needle bars 802 and 804 are inserted, the clutch lever base 854 and the clutch lever base 854 installed on one side of the needle bar receiving tube 852.
  • a pair of needle bar latches 840a and 840b which restrains the needle bar lower fixing pins 838a and 838b deviating from the grooves 802a and 804a from being inserted into the needle bar lower pin fixing grooves 802a and 802b, the needle bar latches And a needle bar return pin 848 for releasing the latched states of 840a and 840b.
  • Reference numeral 834 is a clutch lever hinge
  • 836a and 836b are clutch lever return springs
  • 844a and 844b are needle bar latch return springs
  • 846 are latch brackets
  • 850 are needle bar return pin return springs.
  • the stopper 860 is to latch the one that is not latched by the needle bar fixing pins 838a, 838b of the needle bar (802, 804) so as not to fall.
  • the stopper 860 is a stopper slidably supported by a pair of needle bar fixing pins 862a and 862b and needle bar fixing pins 862a and 862b that are selectively inserted into the needle bar fixing pin insertion grooves 802b and 804b.
  • a base 868 (see FIG. 8D), a pair of needle bar fixing pin support springs 864a and 864b for elastically supporting the needle bar fixing pins 862a and 862b, and a spring support plate 866.
  • FIG. 11 is a view illustrating a needle change operation by the clutch lever and the needle bar lower pin of FIG. 10.
  • the clutch levers 832a and 832b are pushed upward by the clutch lever return springs 836a and 836b, and as a result, the clutch levers Under the action of the hinges 834a, 834b, 834c, the lower pin fixing pins 838a, 838b are pushed toward the needle bars 802, 804. Accordingly, the needle bar lower fixing pins 838a and 838b are inserted into the needle bar lower fixing pin insertion grooves 802a and 804a provided in the needle bar 802 and 804. That is, the needle bars 802 and 804 move together according to the vertical movement of the needle bar holder 830.
  • the lower needle bar fixing pin 838a is caused by the action of the clutch lever hinges 834a, 834b and 834c.
  • 838b comes out of the needle bar fixing pin insertion grooves 802a and 804a provided in the needle bars 802 and 804. That is, even if the needle bar holder 830 moves up and down, the needle bar 802 and 804 do not move together.
  • the needle bar lower fixing pins 838a and 838b are latched by the needle bar latches 840a and 840b and the needle bar latch return springs 844a and 844b.
  • the lower part of the seesaw levers 802c and 804c is pressed and the upper part is lifted while the needle bar fixing pins 838a and 838b are inserted into the needle bar fixing pin insertion grooves 802a and 804a. Becomes In this state, the needle bar fixing pins 862a and 862b of the stopper 860 are not inserted into the needle bar fixing pin insertion grooves 802b and 804b.
  • the needle bar return pin 848 When the needle bar return pin 848 is pressed by the protrusion 814a of the slide block 814, the needle bar latches 840a and 840b move downward, thereby releasing the restraint state of the needle bar lower pins 838a and 838b.
  • the needle bar fixing pins 838a and 838b are inserted into the needle bar fixing pin insertion grooves 802a and 8024a again.
  • the fixing pins 862a and 862b on the needle bar are separated from the fixing pin insertion holes 802b and 804b on the needle bar by the action of the seesaw plates 802c and 804c.
  • both of the needle bar fixing pins 838a and 838b are inserted into the needle bar fixing pin insertion grooves 802a and 804a.
  • both the needle bars 802 and 804 are activated to move up and down together with the vertical movement of the needle bar holder 830.
  • FIG. 13 illustrates a correspondence relationship between a pair of needle bars and a pair of books 1002 and 1004 provided in the sewing bed 309 in the sewing machine according to the present invention.
  • a pair of books 1002 and 1004 corresponding to a pair of needle bars 802 and 804 are provided.
  • the pair of books 1002 and 1004 rotate in a direction facing each other.
  • Rotation of the pair of books 1002 and 1004 in a direction facing each other means that the pair of books 1002 and 1004 all rotate in accordance with the sewing progress direction, whereby a hitch is generated. It can be prevented.
  • FIG. 14A and 14B show stitches by a pair of drums rotating in the same direction and a pair of drums rotating in a direction facing each other, respectively.
  • a hitch may be generated in the stitches on the left side.
  • the hitch is generated in the stitch on the left side because the drum on the left side rotates in the opposite direction with respect to the direction of travel (Y) of the fabric, and the upper thread is directed to the center of the left and right stitches.
  • the pair of books (1002, 1004) to rotate in a direction facing each other to solve this problem.
  • the hitch is improved by allowing the pair of books 1002 and 1004 to rotate in the same direction with respect to the advancing direction Y of the cloth so that not all of the upper threads are directed to the center portion of the left and right stitches.
  • Fig. 15 is a sectional view showing the configuration of the book base fine adjustment device according to the present invention
  • Fig. 16 is a perspective view showing the configuration of the book base fine adjustment device according to the present invention.
  • the book base fine adjusting device 1200 according to the present invention includes an adjusting screw 1205 and a feed shaft 1206.
  • Screws 1208a and 1208b in different directions are formed with respect to the left and right book bases 1202 and 1204 in the feed shaft 1206 for conveying the book bases 1202 and 1204.
  • the left hand screw 1208a corresponds to the left book base 1202
  • the right hand screw 1208b corresponds to the right book base 1204.
  • the book bases 1202 and 1204 may face each other, or the like, depending on the rotation direction of the adjustment screw 1205. Is conveyed in the direction.
  • the pair of book bases 1202 and 1204 can be simultaneously transported by one adjusting screw 1205.
  • Sewing machine by sewing the head and the bed is rotated, the direction of the sewing thread can be kept constant, so in the sewing machine for sewing airbags, bags, shoes, etc. You can do that.
  • angle switching device can activate one or both of the pair of needle bar can facilitate the angle switching operation.

Abstract

The present invention relates to a sewing machine including a rotatable sewing head having two needles. The sewing machine includes: a table on which an object to be sewed is to be disposed; support posts disposed on either side of the table, respectively; and an upper beam connecting the support posts to each other and disposed on an upper end of the sewing machine. Also, the sewing machine further includes: a head part fixed to the upper beam and including a head part rotating unit that rotates a sewing head within a set range, and a pair of needle bar driving units; and a bed part disposed under the head part and including a bed part rotating unit that rotates a sewing bed within a set range, and a pair of bobbins corresponding to the pair of needle bar driving units.

Description

재봉기 및 이에 적합한 침절환 장치Sewing machine and acupuncture device suitable for this
본 발명은 회전이 가능한 재봉헤드를 구비하는 재봉기에 관한 것으로서, 보다 상세하게는 에어백, 가방, 신발 등의 재봉 시 히치 스티치 없이 완벽한 재봉이 가능하도록 재봉헤드가 회전되는 구조를 가지며, 각쌍침(角雙針)을 구비함으로써, 재봉물의 품질향상 및 생산성 향상에 기여할 수 있는 재봉기 및 이에 적합한 침절환 장치에 관한 것이다. The present invention relates to a sewing machine having a rotatable sewing head, and more particularly, has a structure in which the sewing head is rotated to enable perfect sewing without hitch stitch when sewing airbags, bags, shoes, etc. By virtue of the present invention, the present invention relates to a sewing machine and a needle changing device suitable for the same, which can contribute to the improvement of the quality and productivity of the sewing material.
일반적으로 에어백, 가방, 신발 등은 재봉물이 두꺼울 뿐 아니라 원형이나 곡선, 사선 등 재봉이 까다로운 형상의 재봉선이 많이 들어가는데, 기존의 재봉기로는 재봉방향에 의한 히치 스티치(hitch stitch)가 발생하며, 이와 같이 스티치의 형상이 고르지 못하여 제품의 품질이 저하되는 문제점이 발생하였다. In general, airbags, bags, shoes, etc. are not only thick sewing material, but also a lot of sewing lines of a difficult shape, such as circular, curved, oblique line, etc. The conventional sewing machine generates a hitch stitch (hitch stitch) according to the sewing direction, As such, the shape of the stitches is uneven, resulting in a problem of deterioration of product quality.
도 1은 종래의 재봉기의 일예를 도시한 것으로, 테이블(10)의 상측에 헤드부를 포함한 암부(40)가 위치하고, 테이블(10)의 하측에는 훅(Hook)을 포함한 베드부(미도시)가 위치하며, 암부(40)와 베드부를 연결하는 결합부(60)로 구성되고, 헤드부와 베드부의 훅이 협동에 의해 봉제틀(50)에 고정된 재봉 대상물을 재봉하게 된다.1 illustrates an example of a conventional sewing machine, wherein an arm part 40 including a head part is positioned on an upper side of the table 10, and a bed part (not shown) including a hook is disposed below the table 10. It is positioned, consisting of a coupling portion 60 connecting the arm portion 40 and the bed portion, the hook of the head portion and the bed portion is to sew the sewing object fixed to the sewing frame 50 by cooperation.
이와 같은 재봉기는 암, 베드 구조로 인해 봉제틀(50)를 X축 또는 Y축 방향으로 움직일 수 있도록 하여 한정된 영역의 재봉 대상물 가공이 가능하였다.Such a sewing machine was able to move the sewing frame 50 in the X-axis or Y-axis direction due to the arm, bed structure was possible to process the sewing object of a limited area.
그러나, 이와 같은 종래의 재봉기에서는 봉제틀(50)가 X축 또는 Y축 방향으로 직선적으로 움직이므로, 곡선이나 원형, 사선의 스티치를 할 경우 구간별로 히치 스티치(hitch stitch)가 발생하는 문제점이 있었다. However, in such a conventional sewing machine, since the sewing frame 50 moves linearly in the X-axis or Y-axis direction, there is a problem in that hitch stitches are generated for each section when the stitches are curved, circular, or oblique. .
도 2a 내지 도 2b는 종래의 재봉기에서 히치스티치가 발생한 예를 도시한 것으로, 마름모형이나 직사각형의 경우, 4변 중 2개의 변이 퍼펙트 스티치인 P구간(Perfect Stitch)이고, 1개의 변은 정상과 불량 스티치가 혼합된 H/P구간(Hitch/Perfect Stitch)이고. 1개의 변은 H구간(Hitch Stitch)인 것을 알 수 있다. 2A to 2B illustrate an example in which hitch stitches are generated in a conventional sewing machine. In the case of a rhombus or a rectangle, two of four sides are perfect stitches in which P is a perfect stitch, and one side is normal and H / P section where bad stitches are mixed. It can be seen that one side is an H section.
또한, 도 2c는 재봉 후 구간별 H-P Stitch 분포도를 나타낸 것으로, 원형의 스티치에서는 P구간(Perfect Stitch)과 H구간(Hitch Stitch)의 구간이 거의 1:1의 비율로 나타났다. In addition, FIG. 2C shows the distribution of H-P Stitch for each section after sewing. In the circular stitch, the section of the P section (Perfect Stitch) and the H section (Hitch Stitch) was almost 1: 1.
따라서, 고급봉재를 위해 전구간 퍼팩트 스티치를 구현할 수 있는 재봉기의 필요성이 대두되었다. Therefore, the necessity of a sewing machine that can implement a full-stitch perfect stitch for high-quality sewing materials has emerged.
따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출한 것으로서, 에어백, 가방, 신발 등을 재봉하는 재봉기에서 전구간 퍼펙트 스티치를 구현하도록 헤드부와 베드부를 회동시키면서 재봉하며, 한 쌍의 바늘대를 구비하는 재봉기를 제공하는 것을 그 목적으로 한다.Accordingly, the present invention has been made in order to solve the above problems, and sewing while rotating the head portion and the bed portion to implement the perfect stitch between the whole in the sewing machine for sewing airbags, bags, shoes, etc., provided with a pair of needle bar It is an object of the present invention to provide a sewing machine.
본 발명의 다른 목적은 한 쌍의 바늘대에 대응하는 한 쌍의 북이 서로 마주보는 방향으로 회전함으로서 히치가 발생되지 않는 재봉기를 제공하는 것에 있다.Another object of the present invention is to provide a sewing machine in which hitches are not generated by rotating a pair of drums corresponding to a pair of needle bars facing each other.
본 발명의 또 다른 목적은 한 쌍의 바늘대에 대응하는 한 쌍의 북을 지지하는 한 쌍의 북 베이스가 하나의 조절 나사에 의해 동시에 이송되는 북 베이스 미세 조정 장치를 구비하는 재봉기를 제공하는 것에 있다.Still another object of the present invention is to provide a sewing machine having a book base fine adjusting device in which a pair of book bases supporting a pair of books corresponding to a pair of needle bars are simultaneously conveyed by one adjusting screw. .
본 발명의 또 다른 목적은 한 쌍의 바늘대의 각 절환 동작에 적합한 침절환 장치를 제공하는 것에 있다.Still another object of the present invention is to provide a needle changing device suitable for each switching operation of a pair of needle bars.
상기와 같은 목적을 달성하는 본 발명의 재봉기는 Sewing machine of the present invention to achieve the above object
상부에 재봉물을 수용하는 테이블, 테이블의 양측에 설치되는 지지포스트 그리고 지지포스트들을 연결하며 상단에 설치되는 상부빔이 구비되는 재봉기에 있어서, In the sewing machine provided with a table for receiving the sewing on the top, support posts installed on both sides of the table and the upper beam is connected to the support posts installed on the top,
상부빔에 고정되며, 설정된 범위 내에서 재봉 헤드를 회동시키도록 헤드부 회동수단이 구비되며, 한 쌍의 바늘대들이 구비되는 헤드부; 및 A head part fixed to the upper beam and provided with a head part rotating means to rotate the sewing head within a set range, the head part having a pair of needle bars; And
헤드부의 하부에 설치되며, 설정된 범위 내에서 재봉 베드를 회동시키도록 베드부 회동수단이 구비되며 한 쌍의 바늘대에 대응하는 한 쌍의 북이 구비되는 베드부;A bed part installed at a lower part of the head part, the bed part rotating means being provided to rotate the sewing bed within a set range, and having a pair of books corresponding to a pair of needle bars;
를 포함하는 재봉기가 제공된다.There is provided a sewing machine including a.
본 발명에 따르면, 한 쌍의 바늘대들에 대응하며 천의 이송 방향에 맞추어 서로 마주보는 방향으로 회전하는 한 쌍의 북들이 제공된다.According to the present invention, there is provided a pair of books corresponding to the pair of needle bars and rotating in a direction facing each other in accordance with the conveying direction of the cloth.
본 발명에 따르면, 한 쌍의 바늘대들에 대응하는 한 쌍의 북을 지지하는 한 쌍의 북베이스 사이의 위치를 하나의 조절 나사로 미세조정하는 북 베이스 미세 조정 장치가 제공된다.According to the present invention, there is provided a book base fine adjusting device for fine-adjusting a position between a pair of book bases supporting a pair of books corresponding to a pair of needle bars with a single adjusting screw.
상기의 다른 목적을 달성하기 위한 본 발명의 침절환 장치는Acupuncture device of the present invention for achieving the above another object
한 쌍의 바늘대를 가지는 재봉기의 각절환 장치에 있어서,In the angle switching device of the sewing machine having a pair of needle bar,
상기 바늘대 각각에는 바늘대 하 고정핀 삽입홈이 마련되고,Each of the needle bar is provided with a fixing pin insertion groove under the needle bar,
상기 한 쌍의 바늘대 중의 하나 혹은 모두를 래치하여 상하운동시키기 위한 것으로서, 상기 한 쌍의 바늘대가 삽입되는 바늘대 수용관, 상기 바늘대 수용관의 일측에 설치되는 클러치 레버 베이스, 상기 클러치 레버 베이스를 관통하여 상기 바늘대 하 고정핀 삽입홈 각각에 삽입되는 한 쌍의 바늘대 하 고정핀, 상기 클러치 레버 베이스 및 상기 바늘대 하 고정핀 각각에 힌지 결합되어 상기 바늘대 하 고정핀을 상기 바늘대 하 고정핀 삽입홈 각각에 삽입 혹은 이탈시키는 한 쌍의 클러치 레버, 상기 클러치 레버에 의해 상기 바늘대 하 고정핀 삽입홈으로부터 이탈된 상기 바늘대 하 고정핀이 상기 바늘대 하 고정핀 삽입홈으로 삽입되지 않도록 구속하는 한 쌍의 바늘대 래치, 상기 한 쌍의 바늘대 래치의 래치 상태를 해제시키는 바늘대 복귀핀을 구비하는 바늘대 잡이;In order to latch one or both of the pair of needle bar to move up and down, a needle bar receiving tube into which the pair of needle bar is inserted, a clutch lever base installed on one side of the needle bar receiving tube, through the clutch lever base A pair of needle bar lower fixing pins inserted into each of the needle bar lower fixing pin insertion grooves, the clutch lever base and the needle bar lower fixing pins are hinged to each of the needle bar lower fixing pins into the needle bar lower fixing pin insertion grooves, respectively. Or a pair of clutch levers to be separated, a pair of needle bar latches for restraining the needle bar lower fixing pins separated from the needle bar lower pin fixing grooves by the clutch lever from being inserted into the needle bar lower pin fixing grooves, A needle bar return pin is provided to release the latch state of a pair of needle bar latches. The needle bar;
상기 바늘대 잡이의 상측에 설치되며, 상기 한 쌍의 클러치 레버 및 상기 바늘대 복귀핀에 선택적으로 접촉하는 돌출부가 설치된 슬라이드 블록; 및A slide block installed at an upper side of the needle bar holder and provided with a protrusion for selectively contacting the pair of clutch levers and the needle bar return pin; And
상기 슬라이드 블록을 구동하는 엑추에이터;An actuator for driving the slide block;
를 포함하는 것을 특징으로 한다.Characterized in that it comprises a.
여기서, here,
상기 바늘대 각각에는 바늘대 상 고정핀 삽입홈이 마련되고,Each of the needle bar is provided with a fixing pin insertion groove on the needle bar,
상기 한 쌍의 바늘대 중에서 상기 바늘대 하 고정핀에 의해 래치되지 않은 바늘대를 래치하기 위한 것으로서, 상기 바늘대 상 고정핀 삽입홈에 선택적으로 삽입되는 한 쌍의 바늘대 상 고정핀, 상기 한 쌍의 바늘대 상 고정핀의 습동을 지지하는 스톱퍼 베이스, 상기 한 쌍의 바늘대 상 고정핀을 탄성지지하는 한 쌍의 바늘대 상 고정핀 지지 스프링을 구비하는 스톱퍼를 더 포함하는 것이 바람직하다.One of the pair of needle bar for latching the needle bar that is not latched by the needle bar lower fixing pin, the pair of needle bar on the needle bar selectively inserted into the fixing pin insertion groove on the needle bar, the pair of needle bar fixed It is preferable to further comprise a stopper having a stopper base for supporting the sliding of the pin, a pair of needle bar fixing pin support springs for elastically supporting the pair of needle bar fixing pins.
또한, 상기 바늘대에는 상기 바늘대 상 고정핀 삽입홈과 상기 바늘대 하 고정핀 삽입홈 사이에서 힌지 결합되어 상기 바늘대 하 고정핀에 의해 시소 운동하는 시소 레버가 더 구비되는 것이 바람직하다.In addition, the needle bar is preferably provided with a seesaw lever hinged between the needle pin fixing grooves on the needle bar and the needle pin fixing pin insertion grooves to move the seesaw by the needle bar fixing pins.
본 발명에 따른 재봉기는 헤드부와 베드부가 회동하면서 재봉을 함으로써, 재봉된 실의 방향이 일정하게 유지될 수 있으므로 에어백, 가방, 신발 등을 재봉하는 재봉기에서 재봉 구간 전체에 걸쳐서 히치가 없는 스티치를 가능하게 하는 효과를 갖는다. Sewing machine according to the present invention by sewing the head and the bed is rotated, the direction of the sewing thread can be kept constant, so in the sewing machine for sewing airbags, bags, shoes, etc. It has the effect of making it possible.
또한, 본 발명에 따른 재봉기는 하나의 조절 나사로 한 쌍의 북 베이스를 동시에 이송시킬 수 있는 효과를 갖는다.In addition, the sewing machine according to the present invention has the effect of simultaneously transferring a pair of book base with one adjustment screw.
또한, 본 발명에 따른 각절환 장치는 한 쌍의 바늘대 중에서 하나 혹은 모두를 활성화시킬 수 있어서 각절환 동작을 용이하게 하는 효과를 갖는다.In addition, the angle switching device according to the present invention can activate one or both of the pair of needle bar has the effect of facilitating the angle switching operation.
도 1은 종래의 재봉기의 일예를 도시한 사시도,1 is a perspective view showing an example of a conventional sewing machine,
도 2a 내지 도 2b는 종래의 재봉기에서 히치스티치가 발생한 예를 도시한 도면,2a to 2b is a view showing an example of hitch stitch generated in a conventional sewing machine,
도 2c는 재봉 후 구간별 H-P Stitch 분포도를 나타낸 도면, Figure 2c is a diagram showing the H-P Stitch distribution for each section after sewing,
도 3은 본 발명에 따른 재봉기를 도시한 전체 사시도,3 is an overall perspective view of a sewing machine according to the present invention;
도 4는 본 발명의 헤드부를 도시한 사시도,4 is a perspective view showing a head of the present invention;
도 5는 본 발명의 베드부를 도시한 사시도,5 is a perspective view showing a bed of the present invention,
도 6은 본 발명의 헤드부 승하강 수단을 도시한 분해 사시도,6 is an exploded perspective view showing the head lowering means of the present invention;
도 7a 및 도 7b는 본 발명의 회동 구동기어의 일실시예를 나타내는 도면,7a and 7b is a view showing an embodiment of the rotary drive gear of the present invention,
도 8a 내지 도 8d는 본 발명에 따른 재봉기의 재봉 헤드의 구성을 도시하는 투시도,8a to 8d is a perspective view showing the configuration of a sewing head of the sewing machine according to the present invention,
도 9는 본 발명에 따른 재봉기에 있어서의 각절환 동작을 도시하는 도면,9 is a view showing the angle switching operation in the sewing machine according to the present invention,
도 10은 바늘대 잡이의 분해 사시도를 도시한다.10 shows an exploded perspective view of the needle bar holder.
도 11은 도 10에 도시딘 클러치 레버, 바늘대 하 고정핀에 의한 침절환 동작을 설명하기 위하여 도시된 것이다. FIG. 11 is a view illustrating a needle change operation by the clutch lever and the needle bar fixing pin shown in FIG. 10.
도 12는 도 10에 도시된 바늘대 복귀핀에 의한 복귀 동작을 설명하기 위한 것이다.12 is for explaining the return operation by the needle bar return pin shown in FIG.
도 13은 본 발명에 따른 재봉기에 있어서 한 쌍의 바늘대 및 이에 대응하여 재봉 베드에 구비되는 한 쌍의 북들의 대응 관계를 도시한다.13 illustrates a correspondence relationship between a pair of needle bars and a pair of books provided in a sewing bed corresponding to the sewing machine according to the present invention.
도 14의 (a) 및 (b)는 같은 방향으로 회전하는 한 쌍의 북과 서로 마주보는 방향으로 회전하는 한 쌍의 북에 의한 스티치를 각각 도시한다. 14A and 14B show stitches by a pair of drums rotating in the same direction and a pair of drums rotating in a direction facing each other, respectively.
도 15는 본 발명에 따른 북 베이스 미세 조정 장치의 구성을 도시하는 단면도이다.15 is a cross-sectional view showing the configuration of a book base fine adjusting device according to the present invention.
도 16은 본 발명에 따른 북 베이스 미세 조정 장치의 구성을 도시하는 투시도이다.Fig. 16 is a perspective view showing the configuration of a book base fine adjustment device according to the present invention.
***도면에 도시된 부호의 간단한 설명****** Brief description of symbols shown in the drawings ***
100 : 헤드부 101 : 헤드부 회동모터100: head portion 101: head rotating motor
101a : 구동축 101b : 종동축101a: drive shaft 101b: driven shaft
102 : 회동 구동기어 109 : 재봉 헤드102: rotating drive gear 109: sewing head
300 : 베드부 301 : 베드부 회동모터300: bed part 301: bed part rotating motor
302 : 회동 구동기어 309 : 재봉 베드302: rotating drive gear 309: sewing bed
본 발명에 따른 헤드부 고정형 재봉기는 테이블(10)의 상측에 헤드부(100)가 위치하고, 헤드부(100)는 봉제틀(50)에 고정된 재봉 대상물을 재봉하게 된다.The head fixed sewing machine according to the present invention is the head portion 100 is located on the upper side of the table 10, the head portion 100 is to sew the sewing object fixed to the sewing frame (50).
테이블(10)은 사각형의 판으로서, 재봉 대상물이 올려지는 곳이다. The table 10 is a rectangular plate where the sewing object is placed.
테이블(10)의 양 측단에는 지지포스트(22)가 수직 형성되어 있으며, 지지포스트(22)의 상단에는 수평 방향의 상부빔(20)가 설치된다. Support posts 22 are vertically formed at both side ends of the table 10, and an upper beam 20 in a horizontal direction is provided at an upper end of the support posts 22.
헤드부(100)와 상부빔(20) 사이에는 상하 왕복 구동되는 한 쌍의 재봉바늘들이 구비된 재봉헤드(109)를 작업위치로 하강시키거나 또는 대기위치로 승강시키는 헤드부 승하강 수단(210)을 구비된다. Between the head 100 and the upper beam 20, the head lowering means 210 for lowering the sewing head 109 equipped with a pair of sewing needles which are reciprocated up and down to the working position or to the standby position Is provided.
헤드부(100)는 상하 왕복 구동되는 한 쌍의 재봉바늘이 구비된 재봉 헤드(109)와, 재봉바늘을 구동시키기 위한 하축 구동모터와, 재봉 헤드(109)를 회동시키기 위한 헤드부 회동수단(103)을 포함한다. The head part 100 includes a sewing head 109 having a pair of sewing needles which are reciprocated up and down, a lower shaft driving motor for driving a sewing needle, and a head rotating means for rotating the sewing head 109 ( 103).
베드부(300)는 재봉 베드(309)와, 재봉 베드(309)의 하측에 내설되는 한 쌍의 북(1002, 1004)을 구동시키기 위한 하축 구동모터와, 재봉 베드(309)를 회동시키기 위한 베드부 회동수단(303)을 포함한다. The bed unit 300 includes a lower bed drive motor for driving the sewing bed 309, a pair of books 1002 and 1004 installed under the sewing bed 309, and a rotating bed of the sewing bed 309. Bed portion rotating means 303 is included.
이하, 본 발명의 구성 및 동작을 첨부한 도면을 참조하여 상세히 설명한다. Hereinafter, with reference to the accompanying drawings, the configuration and operation of the present invention will be described in detail.
도 3은 본 발명에 따른 재봉기를 도시한 전체 사시도이고, 도 4는 본 발명의 헤드부를 도시한 사시도이고, 도 5는 본 발명의 베드부를 도시한 사시도이다.3 is an overall perspective view showing a sewing machine according to the present invention, Figure 4 is a perspective view showing the head of the present invention, Figure 5 is a perspective view showing the bed of the present invention.
도 3을 참조하면, 본 발명에 따른 헤드부 고정형 재봉기는 테이블(10)의 상측에 헤드부(100)가 위치하고, 헤드부(100)는 봉제틀(50)에 고정된 재봉 대상물을 재봉하게 된다.Referring to Figure 3, the head fixed sewing machine according to the present invention is the head portion 100 is located on the upper side of the table 10, the head portion 100 is to sew the sewing object fixed to the sewing frame 50 .
테이블(10)은 사각형의 판으로서, 재봉 대상물이 올려지는 곳이다. 테이블(10)의 양 측면에는 전, 후방으로 장형의 가이드홀(12)이 형성되어 있다. 가이드홀(12)은 테이블(10) 하방의 Y축 이송수단의 움직임을 테이블(10) 상측의 봉제틀(50)로 전달하기 위해 형성된 장형 구멍이다.The table 10 is a rectangular plate where the sewing object is placed. Long side guide holes 12 are formed at both side surfaces of the table 10 at the front and the rear. The guide hole 12 is a long hole formed to transmit the movement of the Y-axis feed means below the table 10 to the sewing frame 50 above the table 10.
테이블(10)의 양 측단에는 지지포스트(22)가 수직 형성되어 있으며, 지지포스트(22)의 상단에는 수평 방향의 상부빔(20)가 설치된다. Support posts 22 are vertically formed at both side ends of the table 10, and an upper beam 20 in a horizontal direction is provided at an upper end of the support posts 22.
상부빔(20)은 사각 강관으로 구성하는 것이 바람직하며, 중앙에는 전방으로 헤드부(100)가 결합되어 있다. 헤드부(100)와 상부빔(20) 사이에는 상하 왕복 구동되는 한 쌍의 재봉바늘들이 구비된 재봉헤드(109)를 작업위치로 하강시키거나 또는 대기위치로 승강시키는 헤드부 승하강 수단(210)을 구비하는 것이 바람직하다.The upper beam 20 is preferably composed of a square steel pipe, the head portion 100 is coupled to the front in the center. Between the head 100 and the upper beam 20, the head lowering means 210 for lowering the sewing head 109 equipped with a pair of sewing needles which are reciprocated up and down to the working position or to the standby position Is preferably provided.
헤드부 승하강 수단(210)은 도 6에 도시한 바와같이, 액츄에이터 지지브래킷(242)을 이용 내설되어, 재봉헤드(109)를 승하강 시키기 위한 구동력을 제공하는 승하강 액츄에이터(240)와, 전면부 중앙에는 재봉헤드(109)가 체결되고 동시에 후면부 상단에는 승하강 액츄에이터(240)의 구동부와 연결된 헤드부 연결 브래킷(244)이 연결되는 승하강 플레이트(230)로 구성된다.As shown in FIG. 6, the head lifting means 210 is built up using the actuator support bracket 242 to provide a driving force for raising and lowering the sewing head 109. Sewing head 109 is fastened to the center of the front portion and at the same time the upper end is composed of a lifting plate 230 that is connected to the head connection bracket 244 connected to the driving portion of the elevating actuator 240.
승하강 플레이트(230)의 후면부 양측단은 안정되고 신뢰성 높은 승하강 구동을 위해 가이드 레일(252) 및 가이드 체결구(254)와 같은 가이드 수단(250)에 체결고정 된다.Both ends of the rear portion of the elevating plate 230 are fastened to the guide means 250 such as the guide rail 252 and the guide fastener 254 for stable and reliable elevating operation.
가이드 수단(250)은 지지 플레이트(260)의 전면부 양측단에 형성되고, 지지 플레이트(260)의 후면부 중앙에는 승하강 액츄에이터(240)를 설치 지지하기 위한 액츄에이터 지지브래킷(242)이 체결 고정된다.Guide means 250 is formed on both sides of the front portion of the support plate 260, the actuator support bracket 242 for mounting and supporting the lifting and lowering actuator 240 is fixed to the center of the rear portion of the support plate 260 .
헤드부 승하강 수단(210)은 승하강 액츄에이터(240)의 구동부에 연결된 헤드부 연결 브래킷(244)이 구동되고, 이에 연동되어 헤드부 연결 브래킷(244)의 전단부와 연결되는 승하강 플레이트(230)가 가이드 수단(250)을 따라 구동되어 승하강 플레이트(230)의 전면부 상에 체결되는 재봉헤드(109)가 승하강되는 구조로 형성된다.Head elevating means 210 is a elevating plate that is connected to the front end of the head connecting bracket 244, the head connecting bracket 244 is connected to the driving unit of the elevating actuator 240 is driven ( 230 is driven along the guide means 250 is formed in a structure in which the sewing head 109 is fastened up and down fastened on the front portion of the elevating plate 230.
헤드부(100)는 상하 왕복 구동되는 한 쌍의 재봉바늘이 구비된 재봉 헤드(109)와, 재봉바늘을 구동시키기 위한 하축 구동모터(도시안함)와, 재봉 헤드(109)를 회동시키기 위한 헤드부 회동수단(103)을 포함한다. The head part 100 includes a sewing head 109 having a pair of sewing needles which are vertically reciprocated and driven, a lower shaft driving motor (not shown) for driving the sewing needle, and a head for rotating the sewing head 109. And a secondary rotating means (103).
헤드부 회동수단(103)은 도 4에 도시한 바와 같이, 동력원으로 회동모터(101)가 구비되고, 회동모터(101)의 구동축에 연결되어 회동모터(101)의 구동력을 재봉헤드(109)를 회동시키는 종동축에 전달시키기 위한 헤드부 전동부재가 구비된다. As shown in FIG. 4, the head rotating means 103 is provided with a rotating motor 101 as a power source, and is connected to a drive shaft of the rotating motor 101 to sew the driving force of the rotating motor 101 to the sewing head 109. It is provided with a head transmission member for transmitting to the driven shaft for rotating.
또한, 헤드부 회동수단(103)은 헤드부 전동부재를 통해 전달되는 회동모터(101)의 구동력에 의해 회동하는 종동축(도시안함)과, 종동축에 설치되어 종동축을 중심으로 회동가능한 재봉 헤드(109)를 포함한다.In addition, the head rotating means 103 is a driven shaft (not shown) rotated by the driving force of the rotating motor 101 transmitted through the head transmission member, and is installed on the driven shaft to rotate around the driven shaft Head 109.
본 발명의 일실시예에서는 헤드부 전동부재로서, 회동 구동기어(102)를 제시하였는데, 회동 구동기어(102)는 회동모터(101)의 회전수를 감속한 후 감속된 회전수로 재봉 헤드(109)를 회동시키기 위한 것으로 베벨기어를 적용하였다.In an embodiment of the present invention, as the head transmission member, a rotation drive gear 102 is provided, and the rotation drive gear 102 decelerates the rotation speed of the rotation motor 101 and then sewing head ( Bevel gears were used to rotate 109).
본 발명의 회동 구동기어(102)에 적용된 베벨기어는 구동축과 종동축이 직각으로 교차되는 각도로 설치되어 구동축의 회전수를 감속하여 종동축을 회동시킨다.The bevel gear applied to the rotation drive gear 102 of the present invention is installed at an angle at which the drive shaft and the driven shaft cross at right angles to reduce the rotational speed of the drive shaft to rotate the driven shaft.
도 7a 및 도 7b는 본 발명에 따른 회동 구동기어의 일실시예를 나타내는 도면이다. 도 7a 및 도 7b를 참조하면, 회동모터(101)의 구동축(101a)과 종동축(101b)이 직각으로 설치되고, 구동축(101a)에 설치된 베벨기어(102a)와 이에 맞물리는 종동축(101b)의 베벨기어(102b)는 도 7b에서 보는 바와 같이, 회전수를 급감하여 출력할 수 있는 구조로 이루어진다. 7a and 7b is a view showing an embodiment of a rotation drive gear according to the present invention. 7A and 7B, the drive shaft 101a and the driven shaft 101b of the rotating motor 101 are installed at right angles, and the bevel gear 102a provided on the drive shaft 101a and the driven shaft 101b engaged therewith. As shown in FIG. 7B, the bevel gear 102b has a structure capable of rapidly reducing the number of revolutions and outputting the bevel gear 102b.
본 발명의 일실시예에서는 백 드라이빙(back driving) 즉, 출력축(종동축)을 회전시켜 입력축(구동축)이 회전하는 기능과 동시에 입력축의 회전수를 감속시킨 후에 감속된 회전수의 구동력이 출력축에 전달되도록 감속기능을 갖는 회전 구동기어를 적용하여, 재봉 헤드(109)와 재봉 베드(309)의 동심 및 시밍(Seaming) 세팅이 가능하도록 한다.In one embodiment of the present invention, the driving force of the reduced speed after driving the back driving, that is, the output shaft (drive shaft) by rotating the input shaft (drive shaft) and the speed of the input shaft is reduced. By applying a rotation drive gear having a deceleration function to be transmitted, the concentric and seaming setting of the sewing head 109 and the sewing bed 309 is possible.
한편, 베드부(300)는 재봉 베드(309)와, 재봉 베드(309)의 하측에 내설되는 한 쌍의 북(1002, 1004)을 구동시키기 위한 하축 구동모터와, 재봉 베드(309)를 회동시키기 위한 베드부 회동수단(303)을 포함한다. Meanwhile, the bed part 300 rotates the sewing bed 309, a lower shaft drive motor for driving the pair of books 1002 and 1004 installed under the sewing bed 309, and the sewing bed 309. Bed portion rotating means 303 to make.
베드부 회동수단(303)은 도 5에 도시한 바와 같이, 동력원으로 회동모터(301)가 구비되고, 회동모터(301)의 구동축에 연결되어 회동모터(301)의 구동력을 재봉 베드(309)를 회동시키는 종동축에 전달시키기 위한 베드부 전동부재가 구비된다.As shown in FIG. 5, the rotating unit 303 of the bed unit includes a rotating motor 301 as a power source, and is connected to a drive shaft of the rotating motor 301 to sew the driving force of the rotating motor 301 to the sewing bed 309. Bed portion transmission member for transmitting to the driven shaft to rotate is provided.
또한, 베드부 회동수단(303)은 베드부 전동부재를 통해 전달되는 회동모터(301)의 구동력에 의해 회동하는 종동축(도시안함)과, 종동축에 설치되어 종동축을 중심으로 회동가능한 재봉 베드(309)를 포함한다.In addition, the bed rotating means 303 is a driven shaft (not shown) rotated by the driving force of the rotating motor 301 transmitted through the bed transmission member, and is installed on the driven shaft to be rotated around the driven shaft Bed 309.
본 발명의 일실시예에서는 베드부 전동부재로서, 회동 구동기어(302)를 제시하였는데, 회동 구동기어(302)는 회동모터(301)의 회전수를 감속한 후 감속된 회전수로 재봉 베드(309)를 회동시키기 위한 것으로 베벨기어를 적용하였다.In an embodiment of the present invention, as the bed transmission member, the rotation drive gear 302 is provided, and the rotation drive gear 302 decelerates the rotation speed of the rotation motor 301 and then sewing the sewing bed at a reduced rotation speed ( Bevel gears were used to rotate the wheels.
베드부 전동부재는 구동축과 종동축이 직각으로 교차되는 각도로 설치되는 베벨 기어로 이루어지며, 상술한 헤드부 회동수단의 헤드부 전동부재와 동일한 구조 및 특징을 가지므로 이에 대한 설명은 생략하도록 한다. The bed transmission member is made of a bevel gear installed at an angle at which the drive shaft and the driven shaft cross at a right angle, and has the same structure and features as the head transmission member of the head rotation means described above, so a description thereof will be omitted. .
그리고, 베드부 전동부재로서 상술한 회동 구동기어 뿐만 아니라 타이밍 벨트등과 같은 다른 종류의 동력전달부재도 사용될 수 있다.As the bed transmission member, not only the above-described rotational drive gear but also other kinds of power transmission members such as a timing belt and the like can be used.
도면에서 미설명부호인 110, 310은 각각의 회동모터에 전류를 공급하기 위한 슬립 링이다. In the drawings, reference numerals 110 and 310 denote slip rings for supplying current to the respective rotating motors.
재봉 베드(309)의 하측에 내설되는 하축을 구동시키기 위한 하축 구동모터는 헤드부(100)의 상축 구동모터(도시안함)와 동기되어 동시에 구동되며, 베드부(300)의 회동모터(301)는 헤드부(100)의 회동모터(101)의 운동량에 대해 동기되어 함께 구동되도록 설치된다.The lower shaft driving motor for driving the lower shaft installed in the lower side of the sewing bed 309 is simultaneously driven in synchronization with the upper shaft driving motor (not shown) of the head unit 100, and the rotation motor 301 of the bed unit 300 is rotated. Is installed to be driven together in synchronization with the amount of motion of the rotation motor 101 of the head portion 100.
도 8a 내지 도 8d는 본 발명에 따른 재봉기에 있어서 침절환 동작에 관련된 침절환 장치를 도시하는 것이다.8A to 8D illustrate the needle changing device related to the needle changing operation in the sewing machine according to the present invention.
도 8a 내지 도 8d를 참조하면, 재봉 바늘을 유지하는 한 쌍의 바늘대(802, 804) 및 엑추에이터(803)가 도시된다. 바늘대(802, 804)는 상축 구동 모터를 동력원으로 구동되며, 엑추에이터(803)는 바늘대(802, 804) 중의 일측을 비활성화시키거나 양측을 활성화시키는 슬라이드 블록(814)을 구동하기 위하여 제공된다. 8A-8D, a pair of needle posts 802, 804 and actuator 803 for holding a sewing needle are shown. The needle bars 802 and 804 are driven by the upper shaft drive motor as a power source, and the actuator 803 is provided to drive the slide block 814 to deactivate one side of the needle bars 802 and 804 or to activate both sides.
여기서, "활성화"라는 것은 바늘대(802, 804)가 상하로 구동되는 상태를 말하는 것이다. 본 발명에 의하면, 바늘대(802, 804) 각각에 바늘대 고정을 위한 고정홈들을 마련하고, 고정홈에 고정핀을 선택적으로 삽입시키거나 동시에 이탈시킴으로써 바늘대(802, 804)가 바늘대 잡이(830)와 더불어 상하운동하게 된다.Here, "activation" refers to a state in which the needle bar 802, 804 is driven up and down. According to the present invention, the needle bars 802 and 804 are provided with fixing grooves for fixing the needle bars in each of the needle bars 802 and 804, and the needle bars 802 and 804 are separated from the needle bar holders 830 by selectively inserting or fixing the fixing pins at the same time. In addition, up and down movement.
이때, 엑추에이터(803)는 에어실린더 또는 솔레노이드일 수 있는데, 본 발명에서는 솔레노이드를 중심으로 설명한다.In this case, the actuator 803 may be an air cylinder or a solenoid, and the present invention will be described based on the solenoid.
엑추에이터(803)의 구동력은 솔레노이드 축 연결 레버(806), 솔레노이드 블록 운동축(808), 슬라이드블럭 운동축 브라켓(810) 그리고 슬라이드 블록 운동 레버(812)를 거쳐서 슬라이드 블록(814)에 제공된다. 엑추에이터(803)의 구동에 의해 슬라이드 블록(814)는 좌우로 움직이게 된다.The driving force of the actuator 803 is provided to the slide block 814 via the solenoid shaft connecting lever 806, the solenoid block movement shaft 808, the slide block movement shaft bracket 810, and the slide block movement lever 812. The slide block 814 is moved left and right by driving the actuator 803.
슬라이드 블록(814)의 선단에는 클러치 레버(832; 832a, 832b) 혹은 바늘대 복귀핀(848)을 누르기 위한 돌출부(814a)가 하방으로 돌출되게 설치된다. At the tip of the slide block 814, a projection 814a for pressing the clutch levers 832 (832a, 832b) or the needle bar return pin 848 is provided to protrude downward.
바늘대 잡이(830)는 한 쌍의 바늘대(802, 804)를 래치하여 상하운동시키기 위한 것이다. 특히, 각 절환 동작에 있어서, 바늘대 잡이(830)는 슬라이드 블록(814)과 함께 동작하여, 일측의 바늘대(802 혹은 804)를 선택적으로 활성화시키거나 양측의 바늘대(802, 804) 모두를 활성화시킨다. Needle bar holder 830 is for latching a pair of needle bar (802, 804) to move up and down. In particular, in each switching operation, the needle bar holder 830 operates in conjunction with the slide block 814 to selectively activate the needle bar 802 or 804 on one side or to activate both the needle bars 802 and 804 on both sides. .
스톱퍼(860)는 바늘대 하 고정핀(838a, 838b)에 의해 래치되지 않는 바늘대(802, 804)가 낙하하지 않도록 잡아주기 위한 것이다.The stopper 860 is for holding the needle bars 802 and 804 not latched by the needle bar fixing pins 838a and 838b so as not to fall.
엑추에이터(803), 슬라이드 블록(814), 바늘대 잡이(830) 그리고 스톱퍼(860)는 본 발명의 요약에 있어서의 침절환 장치를 구성한다.The actuator 803, the slide block 814, the needle bar holder 830, and the stopper 860 constitute a needle changing device in the summary of the present invention.
도 9는 본 발명에 따른 재봉기에 있어서의 각절환 동작을 도시한다. 각절환(角折換)이란, 2개의 바늘대(802, 804)가 재봉질을 하다가 수직으로 방향을 꺽은 후 계속 재봉질을 수행해 나가는 것을 말한다. 9 shows an angular switching operation in the sewing machine according to the present invention. Angular switching (角 折 換) means that the two needle bar (802, 804) to sew and continue sewing after turning in the vertical direction.
도 9를 참조하면, 2개의 바늘대(802, 804)가 나란히 재봉질을 하다가 도면에서 h지점에서 방향을 절환하여 화살표 방향으로 진행해 나가기 위해서는, 좌측의 바늘대(802)에 의해 한 땀(a)을 가고 수직으로 방향을 틀어서 한 땀(b)을 더 가는 동안 우측의 바늘대(804)는 비활성화된 상태를 유지하여야 한다. Referring to FIG. 9, two needle bars 802 and 804 are sewn side by side, and in order to switch directions at the point h in the drawing and proceed in the direction of the arrow, a stitch (a) is taken by the left needle bar 802. The needle bar 804 on the right side should remain inactive while going one stitch b further in a vertical direction.
슬라이드 블록(814) 및 엑추에이터(803)는 각절환 동작에 있어서 일측의 바늘대(802 혹은 804)를 비활성화시키기 위하여 제공된다. The slide block 814 and the actuator 803 are provided to deactivate the needle bar 802 or 804 on one side in the angular switching operation.
도 10은 바늘대 잡이(830)의 분해 사시도를 도시한다. 바늘대 잡이(830)는 바늘대 수용관(852) 및 클러치 레버 베이스(854)를 포함한다. 바늘대 수용관(852)은 한 쌍의 바늘대(802, 804)를 수용하기 위한 것이며, 클러치 레버 베이스(854)는 바늘대 수용관(852)의 일측에 일체로 형성되는 것이 바람직하다.10 shows an exploded perspective view of the needle bar holder 830. The needle bar holder 830 includes a needle bar receiving tube 852 and a clutch lever base 854. Needle bar receiving tube 852 is for receiving a pair of needle bar (802, 804), the clutch lever base 854 is preferably formed integrally on one side of the needle bar receiving tube (852).
바늘대(802, 804)에는 바늘대 하 고정핀 삽입홈(802a, 804a), 바늘대 상 고정핀 삽입홈(802b, 804b) 그리고 시소 레버(802c, 804c)가 설치된다. 시소 레버(802c, 804c)는 바늘대 하 고정핀 삽입홈(802a, 804a)과 바늘대 상 고정핀 삽입홈(802b, 804b) 사이에 마련되는 힌지(미도시)를 중심으로 시소 운동하며, 시소 운동을 위한 구동력은 바늘대 하 고정핀(838a, 838b)에 의해 제공된다.The needle bar 802 and 804 are provided with fixing pin insertion grooves 802a and 804a under the needle bar, fixing pin insertion grooves 802b and 804b on the needle bar and the seesaw levers 802c and 804c. The seesaw levers 802c and 804c move the seesaw around a hinge (not shown) provided between the needle bar fixing pin insertion grooves 802a and 804a and the needle bar fixing pin insertion grooves 802b and 804b. The driving force for this is provided by the fixing pins 838a and 838b under the needle bar.
바늘대 잡이(830)는 바늘대(802, 804) 중의 하나 혹은 모두를 래치하여 상하운동시키기 위한 것이다. 바늘대 잡이(830)는 바늘대(802, 804)가 삽입되는 바늘대 수용관(852), 바늘대 수용관(852)의 일측에 설치되는 클러치 레버 베이스(854), 클러치 레버 베이스(854)를 관통하여 바늘대 하 고정핀 삽입홈(802a, 804a) 각각에 삽입되는 한 쌍의 바늘대 하 고정핀(838a, 838b), 클러치 레버 베이스(854) 및 바늘대 하 고정핀(838a, 838b) 각각에 힌지 결합되어 바늘대 하 고정핀(838a, 838b)을 바늘대 하 고정핀 삽입홈(802a, 802b) 각각에 삽입 혹은 이탈시키는 한 쌍의 클러치 레버(832a, 832b), 클러치 레버(832a, 832b)에 의해 바늘대 하 고정핀 삽입홈(802a, 804a)으로부터 이탈된 바늘대 하 고정핀(838a, 838b)이 상기 바늘대 하 고정핀 삽입홈(802a, 802b)으로 삽입되지 않도록 구속하는 한 쌍의 바늘대 래치(840a, 840b), 바늘대 래치(840a, 840b)의 래치 상태를 해제시키는 바늘대 복귀핀(848)을 구비한다. Needle bar holder 830 is for latching one or both of the needle bar (802, 804) to move up and down. The needle bar holder 830 penetrates the needle bar through the needle bar receiving tube 852 into which the needle bars 802 and 804 are inserted, the clutch lever base 854 and the clutch lever base 854 installed on one side of the needle bar receiving tube 852. A pair of needle bar lower fixing pins 838a and 838b, clutch lever base 854, and needle bar lower fixing pins 838a and 838b respectively inserted into the lower fixing pin insertion grooves 802a and 804a, respectively, Lower needle bar fixing pin insertion by a pair of clutch levers 832a and 832b and clutch levers 832a and 832b for inserting or detaching the fixing pins 838a and 838b into the needle bar fixing pin insertion grooves 802a and 802b, respectively. A pair of needle bar latches 840a and 840b, which restrains the needle bar lower fixing pins 838a and 838b deviating from the grooves 802a and 804a from being inserted into the needle bar lower pin fixing grooves 802a and 802b, the needle bar latches And a needle bar return pin 848 for releasing the latched states of 840a and 840b.
미설명부호 834는 클러치 레버 힌지이고, 836a 및 836b는 클러치 레버 복귀 스프링이고, 844a 및 844b는 바늘대 래치 복귀 스프링이고, 846은 래치 브라켓이고 그리고 850은 바늘대 복귀핀 복귀 스프링이다.Reference numeral 834 is a clutch lever hinge, 836a and 836b are clutch lever return springs, 844a and 844b are needle bar latch return springs, 846 are latch brackets and 850 are needle bar return pin return springs.
한편, 스톱퍼(860)는 바늘대(802, 804) 중에서 바늘대 하 고정핀(838a, 838b)에 의해 래치되지 않은 것을 래치하여 낙하되지 않게 하기 위한 것이다. 스톱퍼(860)는 바늘대 상 고정핀 삽입홈(802b, 804b)에 선택적으로 삽입되는 한 쌍의 바늘대 상 고정핀(862a, 862b), 바늘대 상 고정핀(862a, 862b)이 슬라이드 가능하게 지지하는 스톱퍼 베이스(868, 도 8d 참조), 바늘대 상 고정핀(862a, 862b)을 탄성지지하는 한 쌍의 바늘대 상 고정핀 지지 스프링(864a, 864b) 및 스프링 지지 플레이트(866)을 구비한다.On the other hand, the stopper 860 is to latch the one that is not latched by the needle bar fixing pins 838a, 838b of the needle bar (802, 804) so as not to fall. The stopper 860 is a stopper slidably supported by a pair of needle bar fixing pins 862a and 862b and needle bar fixing pins 862a and 862b that are selectively inserted into the needle bar fixing pin insertion grooves 802b and 804b. A base 868 (see FIG. 8D), a pair of needle bar fixing pin support springs 864a and 864b for elastically supporting the needle bar fixing pins 862a and 862b, and a spring support plate 866.
도 11은 도 10에 도시되는 클러치 레버, 바늘대 하 고정핀에 의한 침절환 동작을 설명하기 위하여 도시된 것이다. FIG. 11 is a view illustrating a needle change operation by the clutch lever and the needle bar lower pin of FIG. 10.
도 11을 참조하면, 클러치 레버(832a, 832b)의 헤드 부분이 눌려지지 않은 상태라면, 클러치 레버(832a, 832b)는 클러치 레버 복귀 스프링(836a, 836b)에 의해 상측으로 밀려지고 그 결과 클러치 레버 힌지(834a, 834b, 834c)의 작용에 의해 바늘대 하 고정핀(838a, 838b)이 바늘대(802, 804) 쪽으로 밀려진다. 이에 따라, 바늘대 하 고정핀(838a, 838b)는 바늘대(802, 804)에 마련된 바늘대 하 고정핀 삽입홈(802a, 804a)에 삽입된 상태를 유지한다. 즉, 바늘대 잡이(830)의 상하 운동에 따라 바늘대(802, 804)가 함께 움직이는 활성화 상태가 된다. Referring to FIG. 11, if the head portions of the clutch levers 832a and 832b are not pressed, the clutch levers 832a and 832b are pushed upward by the clutch lever return springs 836a and 836b, and as a result, the clutch levers Under the action of the hinges 834a, 834b, 834c, the lower pin fixing pins 838a, 838b are pushed toward the needle bars 802, 804. Accordingly, the needle bar lower fixing pins 838a and 838b are inserted into the needle bar lower fixing pin insertion grooves 802a and 804a provided in the needle bar 802 and 804. That is, the needle bars 802 and 804 move together according to the vertical movement of the needle bar holder 830.
만일, 슬라이드 블록(814)의 돌출부(814a)에 의해 클러치 레버(832a, 832b)의 헤드 부분이 밑으로 눌려지면, 클러치 레버 힌지(834a, 834b, 834c)의 작용에 의해 바늘대 하 고정핀(838a, 838b)가 바늘대(802, 804)에 마련된 바늘대 하 고정핀 삽입홈(802a, 804a)으로부터 빠져나오게 된다. 즉, 바늘대 잡이(830)이 상하운동하더라도 바늘대(802, 804)가 함께 움직이지 않는 비활성화 상태가 된다. 한편, 이러한 비활성화 상태에서는, 바늘대 래치(840a, 840b) 및 바늘대 래치 복귀 스프링(844a, 844b)에 의해 바늘대 하 고정핀(838a, 838b)가 래치(latched)된다.If the head portion of the clutch levers 832a and 832b is pushed downward by the protrusion 814a of the slide block 814, the lower needle bar fixing pin 838a is caused by the action of the clutch lever hinges 834a, 834b and 834c. , 838b comes out of the needle bar fixing pin insertion grooves 802a and 804a provided in the needle bars 802 and 804. That is, even if the needle bar holder 830 moves up and down, the needle bar 802 and 804 do not move together. On the other hand, in this inactive state, the needle bar lower fixing pins 838a and 838b are latched by the needle bar latches 840a and 840b and the needle bar latch return springs 844a and 844b.
다시 도 10을 참조하면, 바늘대 하 고정핀(838a, 838b)가 바늘대 하 고정핀 삽입홈(802a, 804a)에 삽입된 상태에서는 시소레버(802c, 804c)의 하부가 눌려지고 상부가 들려진 상태가 된다. 이 상태에서는 스톱퍼(860)의 바늘대 상 고정핀(862a, 862b)가 바늘대 상 고정핀 삽입홈(802b, 804b)에 삽입되지 않는다.Referring back to FIG. 10, the lower part of the seesaw levers 802c and 804c is pressed and the upper part is lifted while the needle bar fixing pins 838a and 838b are inserted into the needle bar fixing pin insertion grooves 802a and 804a. Becomes In this state, the needle bar fixing pins 862a and 862b of the stopper 860 are not inserted into the needle bar fixing pin insertion grooves 802b and 804b.
그렇지만, 바늘대 하 고정핀(838a, 838b)이 바늘대 하 고정핀 삽입홈(802a, 804a)에서 이탈된 상태에서는 시소 레버판(802c, 804c)의 하부가 눌려지지 않기 때문에 바늘대 상 고정핀(862a, 862b)이 바늘대 상 고정핀 삽입홈(802b, 804b)에 삽입된다. 따라서, 바늘대(802, 804)는 바늘대 상 고정핀(862a, 862b)에 의해 고정되어 낙하되지 않는다.However, since the lower part of the seesaw lever plates 802c and 804c is not pressed when the lower needle bar fixing pins 838a and 838b are separated from the lower needle bar fixing pin insertion grooves 802a and 804a, the fixing pins on the needle bar 862a, 862b) is inserted into the fixing pin insertion grooves 802b and 804b on the needle bar. Accordingly, the needle bars 802 and 804 are fixed by the fixing pins 862a and 862b on the needle bars and do not fall.
도 12는 도 10에 도시된 바늘대 복귀핀에 의한 복귀 동작을 설명하기 위한 것이다.12 is for explaining the return operation by the needle bar return pin shown in FIG.
슬라이드 블록(814)의 돌출부(814a)에 의해 바늘대 복귀핀(848)이 눌려지면 바늘대 래치(840a, 840b)가 하방으로 이동하고, 이에 따라 바늘대 하 고정핀(838a, 838b)의 구속 상태가 해제되어 바늘대 하 고정핀(838a, 838b)가 다시 바늘대 하 고정핀 삽입홈(802a, 8024a)으로 삽입된다. 또한, 시소판(802c, 804c)의 작용에 의해 바늘대 상 고정핀(862a, 862b)이 바늘대 상 고정핀 삽입홀(802b, 804b)로부터 이탈된다. When the needle bar return pin 848 is pressed by the protrusion 814a of the slide block 814, the needle bar latches 840a and 840b move downward, thereby releasing the restraint state of the needle bar lower pins 838a and 838b. The needle bar fixing pins 838a and 838b are inserted into the needle bar fixing pin insertion grooves 802a and 8024a again. In addition, the fixing pins 862a and 862b on the needle bar are separated from the fixing pin insertion holes 802b and 804b on the needle bar by the action of the seesaw plates 802c and 804c.
바늘대 복귀핀(848)에 의해 바늘대 래치(840a, 840b)가 모두 하방으로 이동하므로, 바늘대 하 고정핀(838a, 838b)가 모두 바늘대 하 고정핀 삽입홈(802a, 804a)로 삽입된다.Since the needle bar latches 840a and 840b are all moved downward by the needle bar return pin 848, both of the needle bar fixing pins 838a and 838b are inserted into the needle bar fixing pin insertion grooves 802a and 804a.
이에 따라 바늘대(802, 804) 모두가 바늘대 잡이(830)의 상하 운동과 함께 승하강하는 활성화 상태가 된다.As a result, both the needle bars 802 and 804 are activated to move up and down together with the vertical movement of the needle bar holder 830.
도 13은 본 발명에 따른 재봉기에 있어서 한 쌍의 바늘대 및 이에 대응하여 재봉 베드(309)에 구비되는 한 쌍의 북(1002, 1004)들의 대응 관계를 도시한다.13 illustrates a correspondence relationship between a pair of needle bars and a pair of books 1002 and 1004 provided in the sewing bed 309 in the sewing machine according to the present invention.
도 13을 참조하면, 한 쌍의 바늘대(802, 804)에 대응하는 한 쌍의 북(1002, 1004)이 구비된다. 본 발명에 있어서, 한 쌍의 북(1002, 1004)은 서로 마주보는 방향으로 회전한다.Referring to FIG. 13, a pair of books 1002 and 1004 corresponding to a pair of needle bars 802 and 804 are provided. In the present invention, the pair of books 1002 and 1004 rotate in a direction facing each other.
한 쌍의 북(1002, 1004)이 서로 마주보는 방향으로 회전한다는 것은 한 쌍의 북(1002, 1004)이 모두 재봉 진행 방향에 맞추어 회전하는 것을 의미하며, 이에 의해 히치(hitch)가 발생하는 것을 방지할 수 있게 된다.Rotation of the pair of books 1002 and 1004 in a direction facing each other means that the pair of books 1002 and 1004 all rotate in accordance with the sewing progress direction, whereby a hitch is generated. It can be prevented.
도 14의 (a) 및 (b)는 같은 방향으로 회전하는 한 쌍의 북과 서로 마주보는 방향으로 회전하는 한 쌍의 북에 의한 스티치를 각각 도시한다. 도 14의 (a)를 참조하면 왼쪽의 스티치들에서 히치(hitch)가 발생되는 것을 알 수 있다. 왼쪽의 스티치에서 히치가 발생되는 이유는 왼쪽의 북이 천의 진행 방향(Y)에 대하여 반대 방향으로 회전하며 이에 따라 윗실이 좌우 스티치의 가운데 부분으로 쏠려지기 때문이다.14A and 14B show stitches by a pair of drums rotating in the same direction and a pair of drums rotating in a direction facing each other, respectively. Referring to FIG. 14A, a hitch may be generated in the stitches on the left side. The hitch is generated in the stitch on the left side because the drum on the left side rotates in the opposite direction with respect to the direction of travel (Y) of the fabric, and the upper thread is directed to the center of the left and right stitches.
본 발명에서는 한 쌍의 북(1002, 1004)이 서로 마주보는 방향으로 회전하도록 하여 이러한 문제를 해소하도록 한다. 구체적으로, 한 쌍의 북(1002, 1004)이 천의 진행 방향(Y)에 대하여 동일한 방향으로 회전하도록 함으로써 윗실 모두가 좌우 스티치의 가운데 부분으로 쏠리지 않도록 함으로서 히치가 개선된다.In the present invention, the pair of books (1002, 1004) to rotate in a direction facing each other to solve this problem. Specifically, the hitch is improved by allowing the pair of books 1002 and 1004 to rotate in the same direction with respect to the advancing direction Y of the cloth so that not all of the upper threads are directed to the center portion of the left and right stitches.
도 15는 본 발명에 따른 북 베이스 미세 조정 장치의 구성을 도시하는 단면도이고, 도 16은 본 발명에 따른 북 베이스 미세 조정 장치의 구성을 도시하는 투시도이다. 도 15 및 도 16을 참조하면, 본 발명에 따른 북 베이스 미세 조정 장치(1200)는 조절 나사(1205) 및 이송축(1206)을 포함한다.Fig. 15 is a sectional view showing the configuration of the book base fine adjustment device according to the present invention, and Fig. 16 is a perspective view showing the configuration of the book base fine adjustment device according to the present invention. 15 and 16, the book base fine adjusting device 1200 according to the present invention includes an adjusting screw 1205 and a feed shaft 1206.
북 베이스(1202, 1204)를 이송시키는 이송축(1206)에서 좌우의 북 베이스(1202, 1204)에 대하여 서로 다른 방향의 나사(1208a, 1208b)가 형성된다. 구체적으로, 왼쪽의 북 베이스(1202)에 대해서는 왼나사(1208a)가 대응되고 오른쪽의 북 베이스(1204)에 대해서는 오른나사(1208b)가 대응된다. Screws 1208a and 1208b in different directions are formed with respect to the left and right book bases 1202 and 1204 in the feed shaft 1206 for conveying the book bases 1202 and 1204. Specifically, the left hand screw 1208a corresponds to the left book base 1202, and the right hand screw 1208b corresponds to the right book base 1204.
이송축(1206)에 설치된 서로 다른 방향의 나사들(1208a, 1208b)의 작용에 의해, 조절나사(1205)의 회전 방향에 따라 북 베이스(1202, 1204)들은 서로 마주보는 방향 혹은 서로 등을 지는 방향으로 이송된다. By the action of the screws 1208a and 1208b in different directions provided on the feed shaft 1206, the book bases 1202 and 1204 may face each other, or the like, depending on the rotation direction of the adjustment screw 1205. Is conveyed in the direction.
이에 따라 하나의 조절 나사(1205)에 의해 한 쌍의 북 베이스(1202, 1204)를 동시에 이송시킬 수 있게 된다.Accordingly, the pair of book bases 1202 and 1204 can be simultaneously transported by one adjusting screw 1205.
본 발명에 따른 재봉기는 헤드부와 베드부가 회동하면서 재봉을 함으로써, 재봉된 실의 방향이 일정하게 유지될 수 있으므로 에어백, 가방, 신발 등을 재봉하는 재봉기에서 재봉 구간 전체에 걸쳐서 히치가 없는 스티치를 가능하게 할 수 있다.Sewing machine according to the present invention by sewing the head and the bed is rotated, the direction of the sewing thread can be kept constant, so in the sewing machine for sewing airbags, bags, shoes, etc. You can do that.
또한, 본 발명에 따른 각절환 장치는 한 쌍의 바늘대 중에서 하나 혹은 모두를 활성화시킬 수 있어서 각절환 동작을 용이하게 할 수 있다. In addition, the angle switching device according to the present invention can activate one or both of the pair of needle bar can facilitate the angle switching operation.

Claims (12)

  1. 상부에 재봉물을 수용하는 테이블과, A table to accommodate the sewing material at the upper part,
    상기 테이블의 양측에 설치되는 지지포스트와, Support posts provided at both sides of the table;
    상기 지지포스트들을 연결하며 상단에 설치되는 상부빔이 구비되는 재봉기에 있어서, In the sewing machine provided with an upper beam is connected to the support posts installed on the top,
    상기 상부빔에 고정되며, 설정된 범위 내에서 재봉 헤드를 회동시키도록 헤드부 회동수단이 구비되며, 한 쌍의 바늘대 구동 수단을 구비하는 헤드부; 및A head part fixed to the upper beam and provided with a head part rotating means to rotate the sewing head within a set range, and having a pair of needle bar driving means; And
    상기 헤드부의 하부에 설치되며, 설정된 범위 내에서 재봉 베드를 회동시키도록 베드부 회동수단이 구비되며, 상기 한 쌍의 바늘대 구동 수단에 대응하는 한 쌍의 북이 구비되는 베드부;A bed part installed below the head part, the bed part rotating means being provided to rotate the sewing bed within a set range, and having a pair of books corresponding to the pair of needle bar driving means;
    를 포함하는 재봉기.Sewing machine comprising a.
  2. 제1항에 있어서, The method of claim 1,
    상기 한 쌍의 바늘대 중의 일측을 비활성화시키거나 양측을 활성화시키는 슬라이드 블록을 구동하는 엑추에이터를 더 구비하는 것을 특징으로 하는 재봉기.Sewing machine further comprising an actuator for driving a slide block to deactivate one side of the pair of needle bar or to activate both sides.
  3. 제1항에 있어서, The method of claim 1,
    상기 엑추에이터는 에어실린더인 것을 특징으로 하는 재봉기The actuator is a sewing machine, characterized in that the air cylinder
  4. 제1항에 있어서, The method of claim 1,
    상기 엑추에이터는 솔레노이드인 것을 특징으로 하는 재봉기The actuator is a sewing machine, characterized in that the solenoid
  5. 제2항에 있어서, The method of claim 2,
    상기 한 쌍의 북들을 지지하는 한 쌍의 북 베이스들 사이의 간격을 조절하는 북베이스 미세 조정 장치를 더 구비하는 것을 특징으로 하는 재봉기.And a book base fine adjustment device for adjusting a distance between the pair of book bases supporting the pair of books.
  6. 제5항에 있어서, 상기 북 베이스 미세 조정 장치는6. The apparatus of claim 5, wherein the book base fine adjustment device
    조절 나사; 및Adjusting screw; And
    상기 조절 나사의 회전 방향에 따라 회전하며, 상기 한 쌍의 북 베이스가 결합되는 위치에 서로 다른 방향의 나사가 형성된 이송축; A feed shaft which rotates according to the rotational direction of the adjusting screw and has screws in different directions at positions where the pair of book bases are coupled;
    을 포함하며, 상기 한 쌍의 북 베이스는 상기 조절 나사의 회전 방향에 따라 서로 마주보는 방향 혹은 서로 등을 지는 방향으로 이송되는 것을 특징으로 하는 재봉기.And a pair of book bases are conveyed in a direction facing each other or in a direction of touching each other according to a rotation direction of the adjusting screw.
  7. 제5항에 있어서,The method of claim 5,
    상기 한 쌍의 북은 천의 이송 방향과 일치하도록 서로 마주보는 방향으로 회전되는 것을 특징으로 하는 재봉기.The pair of drums are sewing machine, characterized in that rotated in a direction facing each other to match the conveying direction of the cloth.
  8. 한 쌍의 바늘대를 가지는 재봉기의 침절환 장치에 있어서,In the needle changing device of the sewing machine having a pair of needle bar,
    상기 바늘대 각각에는 바늘대 하 고정핀 삽입홈이 마련되고,Each of the needle bar is provided with a fixing pin insertion groove under the needle bar,
    상기 한 쌍의 바늘대 중의 하나 혹은 모두를 래치하여 상하운동시키기 위한 것으로서, 상기 한 쌍의 바늘대가 삽입되는 바늘대 수용관, 상기 바늘대 수용관의 일측에 설치되는 클러치 레버 베이스, 상기 클러치 레버 베이스를 관통하여 상기 바늘대 하 고정핀 삽입홈 각각에 삽입되는 한 쌍의 바늘대 하 고정핀, 상기 클러치 레버 베이스 및 상기 바늘대 하 고정핀 각각에 힌지 결합되어 상기 바늘대 하 고정핀을 상기 바늘대 하 고정핀 삽입홈 각각에 삽입 혹은 이탈시키는 한 쌍의 클러치 레버, 상기 클러치 레버에 의해 상기 바늘대 하 고정핀 삽입홈으로부터 이탈된 상기 바늘대 하 고정핀이 상기 바늘대 하 고정핀 삽입홈으로 삽입되지 않도록 구속하는 한 쌍의 바늘대 래치, 상기 한 쌍의 바늘대 래치의 래치 상태를 해제시키는 바늘대 복귀핀을 구비하는 바늘대 잡이;In order to latch one or both of the pair of needle bar to move up and down, a needle bar receiving tube into which the pair of needle bar is inserted, a clutch lever base installed on one side of the needle bar receiving tube, through the clutch lever base A pair of needle bar lower fixing pins inserted into each of the needle bar lower fixing pin insertion grooves, the clutch lever base and the needle bar lower fixing pins are hinged to each of the needle bar lower fixing pins into the needle bar lower fixing pin insertion grooves, respectively. Or a pair of clutch levers to be separated, a pair of needle bar latches for restraining the needle bar lower fixing pins separated from the needle bar lower pin fixing grooves by the clutch lever from being inserted into the needle bar lower pin fixing grooves, A needle bar return pin is provided to release the latch state of a pair of needle bar latches. The needle bar;
    상기 바늘대 잡이의 상측에 설치되며, 상기 한 쌍의 클러치 레버 및 상기 바늘대 복귀핀에 선택적으로 접촉하는 돌출부가 설치된 슬라이드 블록; 및A slide block installed at an upper side of the needle bar holder and provided with a protrusion for selectively contacting the pair of clutch levers and the needle bar return pin; And
    상기 슬라이드 블록을 구동하는 엑추에이터;An actuator for driving the slide block;
    를 포함하는 침절환 장치.Acupuncture device comprising a.
  9. 제8항에 있어서, The method of claim 8,
    상기 엑추에이터는 에어실린더인 것을 특징으로 하는 침절환 장치.The actuator is an acupuncture device, characterized in that the air cylinder.
  10. 제9항에 있어서, The method of claim 9,
    상기 엑추에이터는 솔레노이드인 것을 특징으로 하는 침절환 장치.The actuator is a needle replacement device, characterized in that the solenoid.
  11. 제8항에 있어서, The method of claim 8,
    상기 바늘대 각각에는 바늘대 상 고정핀 삽입홈이 마련되고,Each of the needle bar is provided with a fixing pin insertion groove on the needle bar,
    상기 한 쌍의 바늘대 중에서 상기 바늘대 하 고정핀에 의해 래치되지 않은 바늘대를 래치하기 위한 것으로서, 상기 바늘대 상 고정핀 삽입홈에 선택적으로 삽입되는 한 쌍의 바늘대 상 고정핀, 상기 한 쌍의 바늘대 상 고정핀의 습동을 지지하는 스톱퍼 베이스, 상기 한 쌍의 바늘대 상 고정핀을 탄성지지하는 한 쌍의 바늘대 상 고정핀 지지 스프링을 구비하는 스톱퍼를 더 포함하는 것을 특징으로 하는 침절환 장치.One of the pair of needle bar for latching the needle bar that is not latched by the needle bar lower fixing pin, the pair of needle bar on the needle bar selectively inserted into the fixing pin insertion groove on the needle bar, the pair of needle bar fixed And a stopper having a stopper base for supporting sliding of the pin and a pair of needle bar fixing pin support springs for elastically supporting the pair of needle bar fixing pins.
  12. 제11항에 있어서, The method of claim 11,
    상기 바늘대에는 상기 바늘대 상 고정핀 삽입홈과 상기 바늘대 하 고정핀 삽입홈 사이에서 힌지 결합되어 상기 바늘대 하 고정핀에 의해 시소 운동하는 시소 레버가 더 구비되는 것을 특징으로 하는 침절환 장치.The needle bar is hinged between the fixing pin insertion groove on the needle bar and the fixing pin insertion groove lower needle bar is further provided with a seesaw lever for seesawing by the needle bar fixing pin further comprises a needle.
PCT/KR2012/009593 2011-11-14 2012-11-14 Sewing machine and needle-switching device adapted therefor WO2013073830A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20110118407 2011-11-14
KR10-2011-0118407 2011-11-14
KR1020120125274A KR101949888B1 (en) 2011-11-14 2012-11-07 SEWING MACHINE and needle switching device therefor
KR10-2012-0125274 2012-11-07

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN109629135A (en) * 2019-01-30 2019-04-16 拓卡奔马机电科技有限公司 The upper head system of sewing machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07275537A (en) * 1994-04-13 1995-10-24 Aisin Seiki Co Ltd Sewing machine head drive mechanism
KR20050079500A (en) * 2004-02-06 2005-08-10 썬스타 산업봉제기계 주식회사 Sewing machine
KR101040666B1 (en) * 2008-09-05 2011-06-13 주식회사 썬스타 Pattern sewing machine having with two needle stalk

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07275537A (en) * 1994-04-13 1995-10-24 Aisin Seiki Co Ltd Sewing machine head drive mechanism
KR20050079500A (en) * 2004-02-06 2005-08-10 썬스타 산업봉제기계 주식회사 Sewing machine
KR101040666B1 (en) * 2008-09-05 2011-06-13 주식회사 썬스타 Pattern sewing machine having with two needle stalk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109629135A (en) * 2019-01-30 2019-04-16 拓卡奔马机电科技有限公司 The upper head system of sewing machine

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