TW517115B - Sewing machine - Google Patents

Abstract

A sewing machine has a first sewing needle Na and a second sewing needle Nb moving up and down as a upper shaft 1 rotates; a first hook shaft 9 and a second hook shaft 11 provided in parallel to a lower shaft 5; hook bodies K and Ki including hook mounts 10a and 12a respectively having openings 10b and 12b for use in fitting bobbin cases fixed to the respective hook shafts 9 and 11 into a shuttle body, and hooks 10 and 12 fitted to the free ends of the respective hook mounts; a hook saddle 19 for supporting an interlocking mechanism 17 for transmitting the rotation of the hook body K and the lower shaft 5 to the first hook shaft 9, the hook saddle 19 being movable along the lower shaft 5; a hook saddle 20 for supporting an interlocking mechanism 18 for transmuting the rotation of the hook body K' and the lower shaft 5 to the second hook shaft 11, the hook saddle 20 being movable along the lower shaft 5; and shuttle body pressers 23 and 24 for supporting the shuttle bodies in a nonrotational state.

Description

517115 A7 V. Description of the invention (1) The present invention relates to a sewing machine, which has a new form for inserting a bobbin or a bobbin cover contained in the bobbin from the bobbin shaft side into the middle bobbin body. Vertical shuttle body. -· ·. Conventional technology On a sewing machine with a conventional vertical bobbin body, when the bobbin or bobbin cover inside the bobbin is installed in the middle bobbin body, the sliding plate is removed and the bobbin Or the bobbin cover built into the bobbin advances and retreats from the front side of the bobbin in a direction orthogonal to the operator's facing direction. In addition, the two conventional needles shown in Figure 11 are shown. The sewing machine is disclosed in, for example, Japanese Unexamined Patent Publication No. 6-81481, and includes: two sewing needles Na, Nb, which are lifted and lowered as the upper shaft 1 of the sewing machine is rotated; a first sewing machine shuttle body 48, which is It is fixed to the first shuttle body shaft 47 which rotates in conjunction with the rotation of the upper shaft 丨 the lower shaft 5; a shuttle body accessory table 49, which is a person who can advance and retreat the sewing machine; a second The shuttle body 51 of the sewing machine is fixed to the shuttle body shaft 50 which is rotatably held on the shuttle body fitting stand 49; a connecting shaft 52 'is rotatably held on the shuttlecock's fitting stand 49 and simultaneously The second shuttle body shaft 50 is linked; and a linkage mechanism 53 is used to link the link shaft 52 with the lower shaft 5; and the linkage mechanism 53 is fixed by a The first gear 54 fixed to the lower shaft $ is constituted by a second gear 55 fixed to the connecting shaft 52 and can be engaged with the gear 54. At the same time, at least one of the two fake gears 54 and 55 has a large tooth width. Flat gear. In addition, the conventional two-head type sewing machine shown in No. 12 is to improve the production efficiency of large-sized sewing products such as quilts, sheets, towel quilts, etc. The two main sewing machines M8 and M9 are respectively arranged with the sewing machine. The size of the paper on the table τ is applicable to the T-Circle National Tsukasa Standard (CNS) A4 specification (21〇χ 297 public love (please read the precautions on the back before filling this page)

-4 517115 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Description of the invention (2) The conveying direction of the sewing product S is vertical on both sides, and it can be sewn at the same time. Both ends of the object s. On the sewing table T of the two-head initial sewing machine, attached to the bobbin body of the vertical full-rotation bobbin of each sewing machine M8 and M9, an opening and closing cover 56 is provided for installing and replacing the bobbin bobbin from the front of the bobbin body. , 57. The problem to be solved by the present invention is to advance or retreat the bobbin or the bobbin cover with the bobbin from the front side of the bobbin to the direction orthogonal to the direction opposite to the operator, as described above. Good and difficult to operate, reducing work efficiency. In addition, on the above-mentioned two-needle sewing machine, the second sewing machine shuttle body 51 and the shuttle body accessory table 49 are moved forward and backward at the same time according to the interval setting of the needles Na and Nb, and the position and position are fixed by this. , And the relative distance between the two sewing machine shuttle bodies 48 and 51 can be set. Usually, when the bobbin and the bobbin cover are mounted on a vertical full-rotation bobbin, the grip bar of the bobbin cover containing the lower thread bobbin is grasped by fingers from the front side of the so-called bobbin body, and the bobbin is moved toward the middle bobbin body. Push in and secure. Therefore, when replacing the lower bobbin, there must be a sufficient interval between the sewing machine table and the shuttle body accessory table 49 so that it can be put into the hands of the operator. '' However, this two-needle sewing machine is generally sewn in a state close to each of the shuttle bodies 48 and 51, but the gap between the two needles is not so large. The accessory table is backed up to a position where manual work can be performed, and the original positioning must be restored after the work is completed, so a lot of time is wasted. In addition, if it is necessary to always ensure the clearance for hand work, the setting of the slit interval is limited. , ------ 1 丨! I-Install i I — I! I Order ---! !! -Line (Please read the notes on the back before filling this page)

517115 ----- — B7 V. Description of the invention (3) (Please read the precautions on the f side before filling out this page) In addition, on a 2-needle sewing machine, a horizontal rotary hook that is easy to install with a bobbin is generally used. However, on the horizontal rotary hook, a stopper portion that stops the middle shuttle system in a non-rotating state is fixed below the sewing machine table, and a shuttle body guide bar for easily removing the upper loop is provided on the stopper portion. The shuttle body The guide rod is an eccentric portion of the bobbin shaft that is attached to the shaft by a link and a guide arm.桓 Yes, the horizontal rotary shuttle with the above-mentioned shuttle body guide bar has the following disadvantages: First, the sound of the shuttle body guide bar hitting the shuttle body and the eccentricity of the shuttle body shaft are generated during the initial sewing machine operation. Large vibration noise; one is unable to run at high speed; the other is the unevenness of the seam caused by the different twisting methods due to the different rotation directions of the bobbin on the upper loop; the first is the undesirable phenomenon that the thread is not tightened; The helical gears that transmit the power from the underglaze to the vertical shuttle shaft are very expensive. In addition, the above-mentioned two-head type sewing machine is attached to the sewing operation, and since the opening and closing covers 56 and 57 must be hidden under the sewing object S, it is difficult to replace the bobbin. The object of the present invention is to provide a two-needle sewing machine and a two-head type sewing machine with a vertical bobbin, so that the bobbin or bobbin with built-in bobbin can be easily installed and replaced on the bobbin. A device printed by an employee's consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs to solve the problem The sewing machine of the present invention is composed of: a sewing needle, which moves up and down with the rotation of the upper shaft; and a shaft, which is linked with the upper shaft A rotator; a shuttle body attached to the shaft with a middle shuttle body on the front end side of the shaft; and a shuttle body piece attached to the outer periphery to form an opening portion for the purpose of On the aforesaid shaft side of the shuttle body, the following paper standards will be applied to the Chinese National Standard (CNS) A4 Juan rcnn v 9Q7 λ 乂 vol. 517115 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (4 ) The bobbin of the bobbin or the bobbin with the bobbin of the bobbin is installed on the middle bobbin. In addition, the opening portion of the bobbin body can guide the bobbin case to which the lower bobbin or the bobbin with the lower bobbin is installed is guided to the middle bobbin, and has a structure capable of communicating with the inside of the bobbin body. In addition, the shuttle body of the aforementioned pair is that the shuttle body constituted by one of them is a forward spin, and the shuttle body of the other is a counter-rotate. In addition, a pair of needles and shuttles are provided, and the aforementioned shuttle system structure | is arranged opposite to each other. Furthermore, the aforementioned pair of shuttle systems are arranged so that the middle shuttle body crimping member faces the needle drop point and are arranged in parallel to the direction of rotation of the shuttle body. Implementation of the invention-Refer to FIG. 1, FIG. 2, and FIG. 4 and 5 illustrate the first embodiment of the present invention. The sewing machine of the first embodiment is a sewing machine having a plurality of sewing needles, and only two-needle sewing machines will be described as an example. The two-needle sewing machine includes a first needle Na and a second needle Nb that are integrally moved up and down as the upper shaft 1 rotates. ί Corresponds to the first stitch Na, and is equipped with: a first shuttle body shaft 9 which is set in linkage with the upper shaft 1 and is parallel to the rotating lower shaft 5; a first linkage mechanism 17, which will The rotation of the lower shaft 5 is transmitted to the first bobbin shaft 9; a first shuttle. The body k is fixed to the first bobbin shaft 9 and is provided by a bobbin with a bobbin for the device to be taken off or a built-in bobbin. A bobbin body mounting base 10a of an opening portion 10b of the bobbin cover and a bobbin body 10 mounted on the free end of the bobbin body mounting base 10a; a bobbin shaft base 19 supporting The first shuttle body k and the linkage mechanism 17 are capable of moving along the lower axis 5; and a middle shuttle body crimping member 23 This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 7 I ----- I--II ^ ------ II ^ ----- III (Please read the notes on the back before filling out this page) ^ 115 ^ 115 Intellectual Property Bureau, Ministry of Economic Affairs, employee consumption The cooperative prints A7 B7 5. The invention description (5) is a non-rotating supporter. In addition, corresponding to the second stitch Nb, a second shuttle body shaft 11 ′ is provided in linkage with the upper shaft 1 and is arranged in parallel with the rotating lower shaft 5; a first linkage mechanism 18 is used for The rotation of the lower shaft 5 is transmitted to the second bobbin shaft 11; a second bobbin k 'is a bobbin body having an opening portion 12b for the bobbin bobbin for the device or a bobbin cover with a bobbin bobbin inside it. The mounting base 12a and a shuttle body part 12 mounted on the free end of the shuttle body part mounting base 12a; a shuttle body shaft base 20 supporting the second shuttle body k and the linkage mechanism 18, and being capable of The lower shaft 5 moves; and a middle shuttle body crimping portion 24 is a non-rotating supporter in the middle shuttle body. The openings 10b and 12b are formed on the outer peripheral portions of the bobbins k and k 'to allow the bobbin thread bobbin or the bobbin cover having the bobbin thread bobbin to be inserted in the radial direction. In addition, the bobbin k and k 'are formed into a cylindrical shape and a communication hole 10c is formed so that the bobbin case inserted into the lower bobbin or the bobbin with the bobbin bobbin that is inserted from the openings 10b and 12b can be centered on the bobbin side toward the axis mobile. The first shuttle body member 10 and the second shuttle body member 12 may be integrated with the first shuttle body mounting base 10a and the second shuttle body mounting base 12a, respectively. The first shuttle body member 10 and the second shuttle body member 12 are a positive-rotating shuttle boat that rotates counterclockwise when viewed from the front side, and a counter-rotating shuttle body that rotates clockwise. The first needle Na and the second needle Nb are fixed to the needle stopper 4 fixed to the lower end of the needle bar 3. The needle bar 3 is raised and lowered as the upper shaft 1 rotates, and the lifting mechanism is generally known. Supported by a freely swinging arm in the sewing machine arm M1

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Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumption Cooperation, 517115. A7 _____________ B7 V. Description of the invention (6) One end of the upper shaft 1 constituted by a needle and rod is fixed to the driving pulley 2 and is attached to the driving pulley 2. A V-belt is connected to a sewing machine motor (not shown). The other end portion of the upper shaft 1 is omitted from the drawings, but a generally known needle bar driving mechanism including a balance weight, a needle bar crank rod, a needle bar table, and the like is provided. The lifting movement of the needle bar 3 is driven by the sewing machine motor by the power transmitted from the v-belt, the pulley 2, the upper shaft 1, and the needle bar mechanism. In addition, the interval between the first needle Na and the second needle Nb is changed, and a needle stopper 4 to which each of the needles Na and Nb is fixed is replaced at a necessary interval. A pulley 6 is fixed on one end of the lower shaft 5 supported freely on the sewing machine table M2, and a timing belt 8 is wound between the pulley 6 and the pulley 7 fixed to the upper shaft 1. The first bobbin shaft 9 is a bobbin shaft base 19 that is swingably supported horizontally on the bottom of the sewing machine table M2, and a first bobbin body K equipped with a first bobbin body member 10 is fixed to one end thereof. The gear 13 is fixed at one end by a screw 13a. The second bobbin shaft 11 is a bobbin shaft base 20 that is swingable and horizontally on the same coaxial line as the first bobbin shaft 9 on the bottom of the sewing machine table M2, and a device is fixed to one end of the bobbin shaft. The gear 10 is fixed to the other end of the second shuttle body K ′ of the second shuttle body member 12 relative to the second shuttle body member 12. ^ On the bottom surface of the sewing machine table M2, there are a first shuttle shaft table 19 and a second shuttle shaft table 20, and these shuttle shaft tables 19 and 20 are respectively formed by the long holes 19a, 20a, The stage screws 19b and 20b can be moved along the lower shaft 5 and can be fixed at the moved position. Further, the first shuttle body base 19 and the second shuttle body base 20 support a first interlocking mechanism 17 and a second interlocking mechanism 18, respectively. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) -------------- installation -------- order ------- --Line (please read the precautions on the back before filling this page) 517115 Printed by the Consumption House of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (7) And the first linkage mechanism 17 is fixed to the first The gear 13 of the bobbin shaft 9 is also fixed to the middle portion of the lower shaft 5 and is composed of a gear 15 whose teeth are engaged with the gear 13. Similarly, the second interlocking mechanism 18 is fixed to the shaft end opposite to the shaft end of the lower shaft 5 of the pulley 6 fixed to the shaft end of the gear 14 in the same manner as the gear 14 ′ fixed to the second shuttle body shaft 11. The gear 16 is configured. In addition, the gears 15 and 16 can slide in the axial direction against the lower shaft 5 and can also be fixed by screws 15b and 16b, respectively, so as to be fixed on the shaft rotation. Furthermore, each of the shuttle body bases 19 and 20 has a shape in which the interlocking mechanisms 17 and 18 are respectively held in a free state. Related to this, brackets 13b, 14b, 15b, and 16b that restrict movement in the axial direction are respectively provided between the pedestals 19 or 20 on both sides of the gears 13, 14, 15, and 16, so the shuttle body pedestal 19 is used. And 20 move along the lower shaft 5, and the gear 13 and the gear 15 and the gear 14 and the gear 16 are often maintained in a meshed state, and the first shuttle body shaft 9 and the first shuttle body k are maintained due to the movement of the gear set. Alternatively, the second shuttle body shaft 11 and the second shuttle boat k 'also move accordingly, so that the adjustment operation can be easily performed. 13 to 15 illustrate a shuttle boat A2 and a bobbin cover D in the present invention. In addition, similar to the conventional one, the hook is rotated during sewing, and the middle shuttle body A2 is a non-rotating state in which a middle shuttle body waste piece described later is broken. The middle shuttle body A2 has a ring shape opened in the axial direction as shown in Fig. 13 and can communicate with the cylindrical portions of the shuttle bodies K and K '. In addition, a fixed ball A2a is provided on the middle shuttle body A2 so as to protrude into the inside of the annular portion and is provided in a free state. That is, a tapered hole A2e that gradually becomes smaller from the outside to the inside is formed in the ring-shaped part, and the tapered hole A2e is inserted with the paper size applicable to the Chinese National Standard (CNS) A4 specification ( 210 X 297 mm) — Lir-Sickle——Order -------!线-# _- —! (Please ^ -read the note on the back ^ -please fill out this page) II 517115

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _________B7___ V. Description of the invention (8) A fixed ball A2a having a diameter larger than the minimum diameter of the tapered hole A2e and having a diameter that protrudes into the inside of the annular portion, The fixed ball A2a is an elastic ball pressing member A2b provided on the outside of the ring portion and is crimped on the outside of the ring portion, and is often given potential energy toward the inside of the ring portion. In addition, on the middle shuttle body A2, the lower thread open plate A2c is arranged to protrude in the circumferential direction on the inside of the annular portion, and moreover, two fixing pins A2d are protruded opposite to each other on the inside of the annular portion. # On the periphery of the second body member D2 of the bobbin cover D, as shown in FIGS. 14 and 15, a groove D2i is formed at a position corresponding to the fixed ball A2a provided on the middle shuttle body A2, and A shallow recess D2i 1 is provided at a position slightly separated in the clockwise direction. In addition, at a position corresponding to the fixed latch A2d of the middle shuttle body A2, a groove D2j having a reversed l-shape in a clockwise direction is provided. And the bobbin cover D penetrating into the shuttle body k, k 'through the openings 10b and 12b described above is pushed in the direction of the middle shuttle body and pushed into the middle shuttle body A2 and rotated a certain angle. The fixed ball A2a enters the groove D2i, and if it rotates clockwise, it moves into the recess D2il at the same time. Therefore, it is restricted from moving in the direction of rotation unless a force above the upper limit is added. In addition, the fixed pin A2d enters the groove D2j of the inverse L shape and advances in the rotation direction. Therefore, the bobbin cover D can be restricted from moving in the axial direction. When turning a certain angle in the clockwise direction of the bobbin cover D, as shown in FIG. 16, the lower bobbin opening A2c of the middle bobbin A2 enters between the wire adjusting spring D2c and the lower bobbin holding plate D2d and A gap is created between the two, and the held-down line Y is released. At the same time, the off-line Y applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) with this paper size. 11 — — — — — — — — — — — — ^ i I11III IIIII--1 ^ ( Please read the precautions on the back before filling this page) 517115 · Printed by the Consumers ’Cooperative of the Ministry of Economic Affairs, Intellectual Property Bureau A7 B7 V. Description of the invention (9) The recovery force of the thread-clamping spring D2a, which is under the tension Pull up forcibly 'and be thrown out of the front side of the hook hook. The replacement of the lower thread is generally carried out with the lower thread bobbin being wound with the lower thread into the bobbin cover, but it can also be performed without the bobbin-free bobbin (the person who unplugs the core after winding the thread). The replacement of the system is performed by hand in the same way as the conventional one, but it can also use the auxiliary components briefly described below. That is, a loading member can be installed in the opening of the shuttle body, which can load the bobbin or the bobbin cover, and can move near the upper part of the sewing machine table that is easy to operate, and can be fixed while the sewing machine is running. Will fly out. In addition, 'a bobbin cover installation table is provided, which can be moved in the opening of the bobbin body', and can be moved near the upper surface of the sewing machine table which is easy to work, and can be fixed during sewing. The bobbin leather can also be held in the bobbin cover mounting table and installed in the middle bobbin body. The middle prism crimping pieces 23 and 24 are structured as shown in Fig. 4 (1) and (2), and are respectively mounted on the first bobbin shaft base 19 and the second bobbin shaft base in adjustable positions. Above 20, and the middle shuttle body crimping member 23 and the middle shuttle boat crimping member 24 are of a symmetrical structure ', and because their respective parts correspond to the first shuttle body 丨 〇 and the second corpus 12 respectively', The middle shuttle body crimping member 23 will be described as a representative. The symbols of each part are also attached in relative relation. The middle shuttle body crimping member 23 is a hook hole 23a 'provided through the base to be mounted on the first shuttle body pedestal 19 and has a front end that is embedded in the first shuttle body 10 shown in FIG. 5 (2). A part of the middle shuttle body 29 of the stopper groove 30 of the middle shuttle body fitting portion 23 b is connected to this and forms a paper body to avoid the need to be transported to the Chinese standard (CNSM) (210 x 297) (Public love) iiirum -----_! Order -------- line-_ · "! —, (Please read the notes on the back before filling out this page) -ϋ n ii · 1 ϋ nnn ϋ n-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 517115 A7 V. Description of Invention (10) > 目 &的 槽 部 23c。 The recessed portion 23c. The position of the middle shuttle body crimping member 23 is adjusted so that the suture passes through the gap between the middle shuttle body fitting portion 23b and the stop groove 30 and is fixed-〇 However, if the conventional vertical full-rotation shuttle body is opposite two When two needle sewing machines are arranged and configured, the relationship between the middle shuttle body fitting portion 23b and the needle drop position is as shown in FIG. 5 (1). In the same figure, the relative distance L1 of the shuttle bodies 33 and 34 among the shuttle bodies F1 and F2 is adjusted to the minimum and the limit, and the needle drop holes HI and H2 of the needles Na and Nb are dropped, and the center is adjusted. The stop grooves 37 and 38 of the middle shuttle bodies 33 and 34 fitted with the shuttle body crimping members 35 and 36 exist on the center of the shuttle body axis. In this state, make the bobbin cover inaccessible. However, in the present invention, the positional relationship is as shown in Fig. 5 (2). That is, the relative width L2 of the middle shuttle bodies 29 and 3 is made extremely small ', so that the positions of the stop grooves 30 and 32 are shifted toward the vicinity of the lower side of the rotary groove rotation direction of the needle drop holes HI and H2. In addition, if the relative distance L2 is to be made smaller, the thickness of the middle shuttle body fitting portions 23b and 24b must be made thinner. Therefore, in order to increase the strength, the two middle shuttle body fitting portions are integrated. It is also possible to support the hooks to the middle shuttle bodies 29 and 31 on the common intermediate shuttle body fitting portion. The two-needle sewing machine constituted as above is driven by the sewing machine motor, and if the upper shaft 1 and the pulley 2 are rotated simultaneously, the needle bar is raised and lowered by the well-known lifting mechanism of the needle bar, and simultaneously with the needle stopper 4 Raise and lower two stitches Na and Nb. On the other hand, the rotation of the upper shaft 1 is transmitted to the lower shaft 5 through the pulley 7, the timing belt 8 and the pulley 6, and the rotation of the lower shaft 5 is based on the gear. 15 paper rule / applies the Chinese National Standard (CNS) A4 specifications ⑵Q x 297 public love) --- II --------i-----^ «---^ 1 ----- ^ (Please read the notes on the back before filling in this Page) 517115 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ___ Β7 ______ V. Description of the invention (11) The gear 13 and the first bobbin shaft are transmitted to the second bobbin shaft 11 as well. By this drive transmission mechanism, each of the shuttle body parts 10 and 12 installed on each shuttle body k and k 'is rotated simultaneously with the lifting operation of each of the needles Na, and Nb to form a seam. ... The change of the gap between the two needles is first changed to the needle stopper 4 holding the needles Na and Nb at the interval corresponding to the desired gap, and the needle bar 3 is installed. Next, as will be described below, the shuttle body bases 19 and 20 are moved, and the tip positions of the shuttlecocks 10 and 12 corresponding to the positional intervals of the stitches Na and Nb are set. When adjusting the front end position of the hook of the second shuttle body 12 with the second stitch Nb, first loosen and fix the screw 16 a of the gear 16 and release the fixed state with the lower shaft 5 1 and then loosen the screw 20 b at the stage, and The second shuttle body pedestal 20 is moved along the long hole 20a, that is, along the lower axis 5, in the direction of the arrow symbol A or B shown in Fig. 1 or Fig. 2. Then, when it is adjusted to the desired position between the second stitch Nb and the tip of the hook of the second shuttle body member 12, the lock stage screws 20b are fixed and the second shuttle body base 20 is fixed to the sewing machine table M2. Then, tighten the screw Ma and fix the gear 16 to the lower shaft 5. By the movement of the second shuttle body shaft table 20, the second linkage mechanism 18, the second shuttle body shaft 11, the second shuttle body k, (the shuttle body member 12), and the middle shuttle body crimping member. 24 and the shuttle The pedestal stage maintains a certain relationship of movement, thus making positioning work easy 'and can be completed in a short time. The same is true when the front end position of the first hook body 1: 0 is adjusted for the first stitch Na. In addition, in this embodiment, the bobbin pedestals 19 and 20 can be adjusted at any position. For example, when changing the sewing width, the position of the needle on the other side is not the paper size. The Chinese National Standard (CNS) A4 standard (21G) is applicable. x 297 public) --------- -14-ill · —— —— ·! —— Order ----- line- 蟀 (Please read the precautions on the back before filling this page) 517115 A7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs--:---57 ___, invention description (12) Change 'and change only the other-edge stitches on the sewing machine, it will correspond to the same The bobbin shaft of the position needle can also be formed into a structure integrated with the bottom of the milk of the sewing machine. The device and replacement of the bobbin off-line, that is, the device and replacement of the middle bobbin 2 and 31 are performed from the top of the sewing machine M2 as shown in Fig. I. 29 and 31 (refer to FIG. 5 (2)) are inserted through the openings 10b and 12b of the shuttle body mounting bases 10a and 12a, respectively. In general, the replacement of the lower thread is carried out while the lower thread and the lower thread are wound, and the lower thread is installed in the bobbin cover, but it can also be performed on a bobbin without a bobbin (the core is pulled out after winding the thread) Drop)). The replacement operation can be performed in the same manner as in the conventional method, but the auxiliary member can be used as shown in FIG. 17. That is, a guide shaft C2 is inserted through the through hole S1 in the central portion of the shuttle body shaft S so as to slide in the axial direction, and the guide shaft spring C3 is wound between the shuttle shaft S and the washer. Around the guide shaft C2. The front end of the guide shaft C2 protrudes into the openings 10b, 12b of the shuttle body mounting bases 10a, 12a and is fixed to the mounting base C1, and a helical shaft portion C2a and a sphere C2b are provided on the base end of the guide shaft C2. On the other hand, when the bobbin cover D is inserted into the bobbin mounting bases 10a and 12a through the openings 10b and 12b on the mounting body 11, it is formed in a concave-convex portion that fits into the bobbin cover in the rotation direction, and is configured as described later. When mounting 艎 C1 is rotated, the bobbin cover is also rotated. To the base end side of the spiral shaft portion C2a, a rotary rod C19 that is rocked by the air cylinder C18 is connected. A gear-shaped hole is formed in the front end of the rotating rod C19, and the paper size of the guide shaft C2 is inserted into the gear-shaped hole 19a. The paper size of this paper applies to the Chinese National Standard (CNS) A4 (210 X 297 mm). 15 r -------------- Μ — (Please read the notes on the back before filling this page) Order · -line · 517115 Printed by A7 ____B7___; _ V. Description of the invention (13) It is installed in the state. The spiral rod C21 is provided with a two-stranded portion C21a at the front end thereof, and a ball C2b is mounted on the two-stranded portion C21a. A spiral rod C21 that is swung by the cylinder C20 is connected to the ball C2b. After inserting the bobbin cover D into the mounting table 10a, .12a, the operator drives the cylinder C20 by operating a switch or the like, so that the screw rod C21 is rotated counterclockwise. (Figure 17), the guide shaft C2 During the movement in the shuttle direction, the helical shaft portion C2a is brought into the shape of a gear-shaped hole 19a fitted in the rotation lever C19:. When the guide shaft C2 moves to the final point, the air cylinder C18 is driven and the rotary rod C19 is rotated. After the shuttle body cover D held on the mounting table body C0 is mounted on the intermediate shuttle body, if the gas is released by the cylinder C20, the guide shaft C2 is returned to the original position by the guide shaft spring C3. After the return of the guide shaft C2, the cylinder C18 moves in eight directions to return the rotation posture of the mounting body C1 to the original and coming state, and the spiral shaft portion C2a is on the way of the return of the mounting body C1 to the standby position The gear-shaped hole 19a on the rotation lever ci9 is disengaged. In addition, in the modification of the above-mentioned auxiliary member, a loading member may be installed in the opening portion of the bobbin body, which can load the bobbin or bobbin cover, and can move near the upper surface of the sewing machine which is easy to operate. And when the sewing machine is running, it can be fixed without flying out. In addition, a bobbin cover mounting table is provided, which can be moved in the opening portion of the shuttle body, and can be moved near the upper surface of the sewing machine table which is easy to operate, and can be fixed when the sewing machine is running, and can not fly out. The bobbin cover is held on the bobbin cover mounting table and is inserted into the middle bobbin body. In addition, the replacement mechanism of the first interlocking mechanism 17 and the second interlocking mechanism 18 shows that the paper size is applicable to the Chinese National Standard (CNS) A4 specification (21,297 mm) 4 ββ ββ a β- ϋ nn I il 1 III. (Please read the notes on the back before filling out this page) 16 517115 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs

V. Description of the invention (M 'diagram In addition, on this diagram, the same symbols are attached to components with the same function, and _ and the descriptions are omitted (the same below). The i-th linkage mechanism shown in Fig. 1 17 and the second interlocking mechanism 18 use flat gears respectively, but the i-th interlocking mechanism 17 in FIG. 3 uses a right spiral helical gear 25 and a left spiral helical gear 27, and uses the second interlocking mechanism 18 The left helical helical gear 26 and the right helical helical gear 28 ^ In this way, compared with those using helical gears and flat gears, they can run at high speed and improve productivity. Moreover, it has a significant effect on reducing the noise generated from the linkage mechanism. The effect described above is that the gear is used in the interlocking mechanism, but the gear can also be replaced by a combination of a pulley and a timing belt. Next, referring to Figs. 6 to 10, the first embodiment of the sewing machine according to the present invention will be described. 2 embodiment. The sewing machine of the second embodiment is a two-head type sewing machine, in which two sewing machines M3 and M4 are respectively arranged on two sides of the sewing table which are orthogonal to the conveying direction of the northern sewing object S. this Each of the sewing machines M3 (M3,) and M4 (M4,) are shown in Figure 7 (Figure 9) and Figure 8 (Figure 10), but due to the structure of the shuttle body, It is the same as the area around the right shuttle body and the left side shuttle body on the sewing machine of the first embodiment, so the same symbols are attached to the same components. Here, in order to avoid the complication of repeated description, only the description will be given. First, the sewing machine M3 shown in FIG. 7 and the sewing machine M4 shown in FIG. 8 are described. One needle Na and one needle Nb are fixed to the needle bars 39 of the sewing machines M3 and M4, respectively. The structure around the shuttle body is similar to that of the shuttle body on the right side and the shuttle body on the left side of the sewing machine of the first embodiment. The paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) !!- ei — (Please read the precautions on the back before filling out this page) 517115 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the Invention (l5) The area is almost the same, but it does not need to move forward rotation Shuttle body 10 and counter-rotating shuttle body 12, so the first The bobbin shaft bases 19 and 20 on the sewing machine of the present form do not exist. Regardless of which sewing machine m3 or M4, the bobbin mounting bases 10a and 12a are provided with openings, This is an important thing ..---From the position where the sewing object S set on the sewing machine tables M5 and M6 is separated, the installation and replacement of the slide plate 40 of the lower thread bobbin are performed. And 41 are provided to be slidable toward the base of the arm, and if the sliding plates 40 and 41 are opened, the openings 10b and 12b of the shuttle body mounting tables i〇a and i2a can be seen from above, even if Large objects do not need to move the object to be sewn at all, so that the off-line bobbin can be replaced: the replacement operation can be carried out very easily. •..: '. · .-' ..... ··· ... Therefore, there will be no seam position shift, which reduces the burden on the operator-'· ·'. ... ·: · .. a lot while improving productivity. Next, the sewing machine M3 'shown in Fig. 9 and the sewing machine M4, shown in Fig. 10 will be described. Here, the same parts as those of the sewing machines M3 and M4 shown in FIGS. 7 and 8 will be omitted, and only the differences will be described. A bevel gear 42 is fixed to one end of the lower shaft 5, and a bevel gear 43 is fixed to the upper shaft 1, and a vertical shaft 44 is provided to make the bevel gear 42 and the bevel gear 43 in an interlocking relationship. The rotation ratio of the upper sleeve 1 and the lower shaft 5 is set to 1 to 2, and a bevel gear 45 that meshes with the bevel gear 43 and a bevel gear 42 that is meshed with the bevel gear 43 are fixed above the vertical shaft 44 respectively. Of bevel gear 46. In addition, in order to make the shuttle body 12a of the sewing machine M4 into a reverse rotation, that is, 'to make the shuttle body 12a of the sewing machine M4' into a reverse rotation sewing machine, and this paper size applies the Chinese National Standard (CNS) A4 specification ( 210 X 297 public love) W ϋ n I f— n at 11 OJ · ϋ ϋ ϋ ϋ I an · (Please read the cautions on the back before filling in this page): '' -ft! 517115 Ministry of Economic Affairs Intellectual Property Printed by A7 B7

•. .. _ — 'I V. Description of the invention (16) The bevel gear 43' is fixed on the opposite side to the bevel gear 43 and the vertical shaft 44 of the sewing machine. The shaft 1, that is, the bevel gear 43 is the same part for changing only the installation position of the bevel gear 43. The above parts are constructed in the same manner as the conventional two-head sewing machine shown in Fig. 12, and are generally placed on order * the price is low. ADVANTAGE OF THE INVENTION As described above, the sewing machine of the present invention uses a bobbin body mounting table having a bobbin cover for inserting the lower bobbin or the bobbin cover contained in the lower bobbin into the opening of the middle bobbin. The operator can simply change the bobbin or bobbin cover from above or at the front of the sewing machine table. In addition, a two-needle sewing machine with a narrow gap between the two needles, or a two-head sewing machine that is often covered by sewing cloth above the shuttle body, is used to make a bobbin or a bobbin. The built-in bobbin cover can be installed and replaced from the top of the sewing machine, which can be done easily and in a short time at any time. In addition, for a two-needle sewing machine, it can perform high-speed operation than a conventional horizontal hook, and it will not produce a voice ’and the seam average line tension is in good condition. It does not require a high unit price helical gear wheel. Brief Description of the Drawings Fig. 1 is a squint view showing a schematic structure of a two-needle sewing machine according to the present invention. Fig. 2 is a flat TSI · circle showing the main part of the two-needle sewing machine according to the present invention. The figure is a perspective view showing the other interlocking mechanisms constituting the two-needle sewing machine of the present invention; this paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 19 -----— — — — — I -! | I „* ^ 1 (Please read the precautions on the back before filling out this page) 517115 A7 B7 V. Description of the invention (I7) Figure 4 is a perspective view of the left and right shuttle body crimping parts of the present invention; 5 is a diagram illustrating the fitting position of the middle shuttle body crimping member to the middle shuttle body, (1) is a conventional example, (2) is the inventor, and FIG. 6 is a schematic view of the two-head sewing machine of the present invention. Oblique view; Fig. 7 is a perspective view of the right side sewing machine constituting the two-head type sewing machine of the present invention; Fig. 8 is a perspective view of the left side sewing machine constituting the two-head type of the sewing machine of the present invention; and Fig. 9 is another configuration of the present invention. Perspective view of the right side of a two-headed sewing machine; A perspective view of a left side sewing machine of another two-head sewing machine of the Ming Dynasty; FIG. 11 is a perspective view of a conventional two-needle sewing machine; FIG. 12 is a schematic perspective view of a conventional two-head sewing machine; Front view of the shuttle body structure of the middle shuttle body installed on the sewing machine of the present invention; FIG. 14 is an oblique view of the middle shuttle body and the bobbin cover installed on the sewing machine of the present invention; Employee Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Fig. 15 is printed to explain the installation and disassembly of the bobbin case and the bobbin cover in the present invention, and Fig. 16 is an illustration of the offline processing when the bobbin cover of the present invention is installed in the middle bobbin; This is a partial cross-sectional front view of a device for installing the bobbin cover of the present invention in the auxiliary member of the shuttle. 20 This paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm) 丄 A7 B7 V. Description of the invention (18 Component number printed on the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economics b. Upper shaft 2 ... Pulley 3 ... Needle bar 4 ... Needle stop 5 ... Lower shaft 6 '7 ... pulley 8 ... timing belt 9 ... 1st bobbin shaft 10, 1 2 ... shuttle body parts 10a, 12a ... shuttle body part mounting base 10b ... openings 11 ... second shuttle body shafts 13, 14 ... gears 13a ... screws 13b, 14b, 15b, 16b ... bracket 15, 16 ... Gear 17 ... First interlocking mechanism 18 ... Second interlocking mechanism 19 ... First shuttle body base 19a, 20a ... Slotted holes 19b, 20b ... Stage screw 20 ... Second shuttle body base 23 ... Shuttle body crimping member 23a ... Hook hole 23b ... Middle shuttle body engaging portion 23c ... Recessed portion 24 ... Middle shuttle body crimping member 25, 28 ... Right spiral helical gear 26, 27 ... Left spiral slant Gear 29 ... Middle shuttle body 30 ... Stop grooves 40, 41 ... Sliding plate 47 ... First shuttle body shaft 48 ... First sewing machine shuttle body 49 ... Shuttle body accessory table 50 ... Second shuttle body shaft 5 ... Second sewing machine Shuttle body 52 ... Link shaft 53 ... Linking mechanism 54, 55 ... Gear 56,57 ... Opening and closing cover A2 ... Middle shuttle body A2a ... Fixed ball A2b ... Ball pusher ---------- ----.- Installation -------- Order --------- line (please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm) 21 517115 A7 B7 V. Description of the invention (l9) A2c ... A2e ... tapered hole D ... shuttle cover D2l ... groove D2il ... shallow recess D2j ... groove L of inverse L shape ... first shuttle body K '... second shuttle body k ... shuttle body k' ... shuttle body Ml ... Sewing machine arm M2 ... Sewing machine table M8, M9 ... Sewing machine Na, Nb ... Sewing needle S ... Sewn material T ... Sewing table,! ------ Like -------- Order ---------line! (Please ^ -read the note on the back * ^ and fill in this page)

FI I Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs l · ___? ________________ This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 22

Claims (1)

517115 C8 D8 6. Scope of patent application (please read the precautions on the back before filling out this page) 1. A sewing machine is characterized by: a sewing needle, which moves up and down with the rotation of the upper shaft; a shaft, the system A person who rotates in conjunction with the upper shaft, a shuttle body, which is attached to the shaft with a middle shuttle body on the front end side of the shaft; and a shuttle body piece, which forms an opening on the periphery. The opening portion is used to install the lower bobbin or the bobbin cover having the lower bobbin in the middle bobbin on the shaft side portion of the bobbin. 2. The sewing machine according to item 1 of the scope of patent application, characterized in that the opening portion of the bobbin body is configured so that the bobbin cover installed with the lower bobbin or the bobbin with the lower bobbin installed therein can be guided to the middle bobbin body. A structure that can communicate with the inside of the middle shuttle body. '3. The sewing machine according to item 2 of the scope of patent application is characterized in that the shuttle body of the aforementioned pair is one in which the shuttle body is a positive rotation person and the other shuttle body is a reverse rotation person. 4. The sewing machine according to item 1 of the patent application range is characterized in that a pair of needles and a shuttle body are respectively provided, and the aforementioned shuttle system is configured to face each other. Printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. If the sewing machine under the scope of patent application No. 4 is applied, it is characterized in that the aforementioned shuttle system makes the middle shuttle body crimping piece face the needle drop point and is juxtaposed to the shuttle body rotation The direction is configured. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 23