TWI700408B - Bending sewing machine - Google Patents

Abstract

The present invention, bending sewing machine, comprising a lower tube socket, a lower shaft, a transmission mechanism and a rotary shuttle, the lower shaft is connected with the transmission mechanism and processing rotation by setting the X-axis as the axis direction inside the lower tube socket. The lower shaft can process rotation while the transmission mechanism drives an outer kettle of the rotary shuttle and sets the Y-axis as the axis direction. Wherein, the transmission mechanism comprises a rotary-shutter socket, a bearing and a transmission member. The rotary shuttle socket is arranged in the Y-axis direction of the outer kettle, and forming a penetrating section inside the outer kettle, an accommodation space is generated between the penetrating section and the outer kettle. The bearing is located in the accommodation space. Further, the transmission member is connected into the outside of the outer kettle, so three of the transmission member, the bearing and the penetrating section could be arranged from outside of the outer kettle to inside of the outer kettle. Therefore, the assembling states of four of the rotary shuttle socket, the bearing, the out kettle and the transmission member allowing the volume of the end part in the lower tube socket to be narrowed along the Y-direction. So the present invention bending sewing machine can process the sewing work of bounding shoes’ edge for the small size shoes.

Description

Zigzag sewing machine

The invention relates to a zigzag sewing machine capable of reciprocating a needle along a direction perpendicular to a feeding direction to produce zigzag stitches, in particular to a cylindrical zigzag sewing machine that can sew shoes with smaller sizes.

Sewing machines mainly combine several layers of sewing objects with each other through stitching, and with the continuous evolution of technology, there are currently many styles of sewing machines on the market, and different styles of sewing machines can be used for different sewing Among them, there is currently a zigzag sewing machine on the market that can produce zigzag stitches on the surface of shoes, bags or cylinders by swinging the needle.

Please refer to Figures 1 and 2, the conventional zigzag sewing machine 1 has a front head 10 and a pillar 11, and the lower part of the pillar 11 extends along the X-axis direction to form a lower tube seat 12 under the front head 10, as shown in the figure. As shown, the interior of the car head 10 is provided with an upper shaft 101 parallel to the X axis and a swing mechanism 102 assembled on the upper shaft 101, and the upper shaft 101 and the swing mechanism 102 are jointly connected to a needle bar 103, where the upper shaft 101 When rotating with the X axis direction as the axis, the upper shaft 101 drives a needle 104 assembled on the needle bar 103 to move up and down along the Z axis. At the same time, the swing mechanism 102 drives the needle 104 through the rotating upper shaft 101 Take the Y axis direction as the axis to perform reciprocating swings with a set swing amplitude, so that the needle 104 moves left and right along the X axis, so that when the upper shaft 101 rotates, the upper shaft 101 can move the needle 104 along In addition to moving up and down in the Z-axis direction, it can also alternately move left and right along the X-axis direction.

In addition, when the upper shaft 101 rotates, the upper shaft 101 drives a lower shaft 121 assembled inside the lower tube holder 12 to rotate with the X-axis direction as the axis through the transmission shaft 111 inside the assembly pillar 11, and the lower tube holder 12 is provided with a transmission mechanism 122 installed on the lower shaft 121. The transmission mechanism 122 can drive a rotary hook 13 to rotate about the Y-axis direction through the rotating lower shaft 121. Please refer to Figure 3. The transmission mechanism 122 has a first pulley 122a and a second pulley 122b. The first pulley 122a is assembled to the lower shaft 121 via a gear set 122c, and then assembled to the second pulley 122b through a transmission belt 122d, and the second pulley 122a The pulley 122b is arranged in the Y-axis direction of the rotary hook 13, and a ball bearing 122e is installed on the side close to the rotary hook 13, and the ball bearing 122e is connected to the rotary hook 13 on the side away from the second pulley 122b.

However, when the second pulley 122b of the transmission mechanism 122, the ball bearing 122e of the transmission mechanism 122, and the hook 13 are assembled with each other, the ball bearing 122e and the second pulley 122b are arranged in the Y-axis direction of the hook 13 in sequence, so that The ball bearing 122e, the second pulley 122b, and the rotary hook 13 are arranged in series along the Y-axis direction, and the Y-axis direction of the lower tube base 12 must have sufficient front and back length to simultaneously accommodate the ball bearing 122e and the second pulley 122b and the rotary hook 13 cause the front and rear length of the lower tube base 12 to be relatively large, which causes the conventional zigzag sewing machine 1 to be unable to sew the shoe mouth hemming for smaller shoe sizes.

The main purpose of the present invention is to improve the structural composition of the transmission mechanism, so that the structure presented by the assembly of the hook seat, the bearing, the outer kettle and the transmission member can reduce the front and rear length in the Y-axis direction, so that a part of the lower tube body The volume can be reduced along the Y-axis direction, and the zigzag sewing machine can sew the shoe mouth hemming for smaller shoe sizes.

In order to achieve the foregoing objective, the present invention relates to a zigzag sewing machine. The zigzag sewing machine has a needle capable of reciprocating swing along the X-axis direction and a lower tube seat extending along the X-axis direction. A lower shaft is provided, and the lower shaft is connected via a transmission mechanism to drive an outer kettle to rotate with the Y-axis as the axis direction.

The transmission mechanism includes: a rotary hook seat, a bearing, and a first transmission member. The rotary hook seat is in the Y-axis direction of the outer kettle, and has a connecting portion connected to the lower tube seat and a connecting portion arranged on the outer Inside the piercing part of the kettle, between the piercing part and the outer kettle is provided an accommodating space inside the outer kettle, and the bearing is located in the accommodating space and is in contact with the outer diameter of the piercing part and The inner diameter of the outer kettle, in addition, the first transmission member can drive the outer kettle to rotate, and is connected to the outside of the outer kettle, so that the first transmission member, the bearing and the penetration part are sequentially from the outside to the inside arrangement.

Wherein, the shuttle seat forms a through passage through the connecting portion and the through portion, and the through passage is connected to the inside of the outer kettle.

The hook seat further has a first connecting body connected to the lower tube seat and a second connecting body inside the outer kettle. The first connecting body and the second connecting body are respectively capable of contacting the outer kettle A first contact surface and a second contact surface are provided between the first connecting body and the second connecting body, and the first adjusting component is used to adjust the second connecting body and the outer kettle The gap in the Y-axis direction allows the second connecting body to pass through the first adjusting component to approach or be far away from the first connecting body along the Y-axis direction, thereby enabling synchronous adjustment of the accommodating space in the Y-axis direction. In addition, the first contact surface and the second contact surface can jointly prevent the outer kettle from moving along the Y axis.

In a preferred embodiment, the first connecting body has a first lower connecting column contacting the bearing and a first upper connecting column provided with the first contact surface, and the second connecting body has a The second lower connecting column of the second contact surface and a second upper connecting column connected to the first lower connecting column through the first adjusting component, and the first lower connecting column, the second lower connecting column and the second upper connecting column The connecting pillars jointly form the above-mentioned through part, and the first upper connecting pillar separately forms the connecting part, wherein the first connecting body further has a through hole for accommodating the second upper connecting pillar, and the inside of the through hole has A limiting element, and the limiting element is screwed into the through hole and contacting the second connecting column, and the limiting element is provided with a receiving groove for oil cotton.

In addition, a second adjusting component is provided between the connecting portion and the lower tube seat, and the second adjusting component is used to allow the hook seat to move in the Y-axis direction relative to the lower tube seat, so that the hook seat can Drive the outer kettle to be selectively close to or away from the lower tube seat. In this embodiment, the partial length of the connecting portion protrudes from the lower tube seat, and a locking member is installed. The locking member contacts the lower tube seat. On the surface, the lock member can prevent the hook seat from being displaced when the outer kettle is rotated about the Y-axis direction as the axis.

Furthermore, the transmission mechanism further has a second transmission member capable of driving the first transmission member to rotate, and a driven assembly in the Y-axis direction of the second transmission member, and the second transmission member is located at the first transmission member. The X-axis direction of the transmission member, and one end of the driven assembly is connected to the second transmission member, and is connected to the lower shaft at the end away from the outer kettle. In a preferred embodiment, the transmission mechanism further has a In the third transmission member between the first transmission member and the second transmission member, the third transmission member is simultaneously engaged with the first transmission member and the second transmission member, so that the first transmission member and the third transmission member are A meshing gap is formed between the second transmission member and the third transmission member, and the third transmission member is movably assembled to the lower tube seat, so that the third transmission member can move relative to the lower tube seat to adjust the The gap size of the meshing gap.

The characteristic of the present invention is that the hook seat is arranged in the Y-axis direction of the hook, and the connecting part of the hook seat is connected to the lower tube seat, and the piercing part of the hook seat is arranged inside the outer kettle, so that the piercing part An accommodating space located inside the outer kettle is arranged between the outer kettle and the outer kettle, and the bearing is located in the accommodating space, so that the bearing surrounds the penetration part, and the transmission member is connected to the outside of the outer kettle, so that the first transmission member, The bearing and the threading part are arranged in sequence from the outside of the outer kettle to the inside of the outer kettle, so that the structure of the hook seat, the bearing, the outer kettle and the transmission part can be reduced in the Y-axis direction. The front-to-back length of the lower tube seat can be reduced along the Y-axis direction, and the zigzag sewing machine can sew the shoe hem for smaller shoe sizes.

In order to facilitate a deeper, clear and detailed knowledge and understanding of the structure, use and characteristics of the present invention, a preferred embodiment is given, and the detailed description is as follows in conjunction with the drawings:

4 and 5, the zigzag sewing machine 2 of the present invention has a body 20, the body 20 has a head 21 and a pillar 22, the inside of the head 21 has an upper shaft 23 parallel to the X axis, and the upper shaft 23 Connected to a needle bar 24 assembled on the head 21. When the upper shaft 23 rotates around the X-axis direction, the upper shaft 23 can drive the needle bar 24 to move up and down along the Z-axis direction, so that one is connected to the needle bar The needle 25 of the 24 reciprocates synchronously along the Z-axis direction. As shown in the figure, the needle bar 24 is installed with a swing mechanism 26 inside the head 21. The swing mechanism 26 is connected to the upper shaft 23 and rotates through the upper shaft. The shaft 23 can drive the needle 25 to reciprocate with the Y-axis direction as its axis, so that the needle 25 can move left and right along the X-axis, so that when the upper shaft 23 rotates, the upper shaft 23. In addition to driving the needle 25 to move up and down along the Z axis, it can also move left and right alternately along the X axis.

The inside of the pillar 22 has a drive shaft 27 connected to the upper shaft 23, and the pillar 22 extends along the X-axis direction to form a lower tube seat 28 below the front head 21. As shown in the figure, the lower tube seat 28 is provided with a joint The support portion 281 of the pillar 22 and a sewing portion 282 formed on the support portion 281 have a lower shaft 29 connected to the transmission shaft 27 inside the support portion 281, and the longitudinal length of the sewing portion 282 in the Y-axis direction is smaller than the support portion The front and back length of 281 in the Y-axis direction, where the lower shaft 29 is parallel to the X-axis and is driven by the transmission shaft 27 to rotate around the X-axis direction, and the lower shaft 29 is connected to a supporting part 281 at the same time. The transmission mechanism 30 inside and inside the sewing part 282, and the other transmission mechanism 30 is connected to a rotary shuttle 40 inside the sewing part 282. Please refer to FIGS. 6 and 7. The rotary hook 40 has an outer kettle 41 that can rotate and An inner cauldron 42 restricted to rotate, and the outer cauldron 41 can rotate around the Y-axis direction, and form a hollow first assembly part 411 and a hollow first assembly part 411 on opposite sides. The second assembling part 412, as shown in the figure, the first assembling part 411 is connected to the transmission mechanism 30, and the inner pot 42 is installed inside the second assembling part 412, whereby when the lower shaft 29 is driven by the transmission shaft 27 to move in the X-axis direction When rotating as the axis, the lower shaft 29 can drive the outer kettle 41 to rotate with the Y axis as the axis via the transmission mechanism 30.

6 and 7, the transmission mechanism 30 is mainly composed of a rotary hook seat 31, a bearing 32, a transmission assembly 33, and a driven assembly 34. The rotary hook seat 31 is arranged at Y of the rotary hook 40. Axis direction, and has a first connecting body 311 far away from the rotary hook 40, a second connecting body 312 close to the rotary hook 40, a first connecting body 311 and the second connecting body 312 The adjusting component 313 and the second adjusting component 314 located between the first connecting body 311 and the lower tube socket 28, a part of the first connecting body 311 forms a first lower connecting column 311a, and the remaining of the first connecting body 311 A first upper connecting pillar 311b forming a first lower connecting pillar 311a is partially formed, and the first connecting body 311 forms a first through hole 311c, wherein the overall volume of the first lower connecting pillar 311a is smaller than that of the first assembly portion 411 The inner space of the first upper connecting post 311b is set close to the first lower connecting post 311a as a first contact surface 311d facing the second connecting body 312. In addition, a part of the second connecting body 312 forms a first Two lower connecting pillars 312a, and the remaining part of the second connecting body 312 forms a second upper connecting pillar 312b formed on the second lower connecting pillar 312a, and the second connecting body 312 forms a second through hole 312c, and, The second lower connecting column 312a is provided with a second contact surface 312d facing the first connecting body 311 on an end surface close to the second upper connecting column 312b.

In this embodiment, the normal directions of the first contact surface 311d of the first connecting body 311 and the second contact surface 312d of the second connecting body 312 are both parallel to the Y axis, and the first contact surface 311d and the second contact surface 311d The two contact surfaces 312d can jointly contact the first assembly portion 411 of the outer tank 41, so that the first contact surface 311d and the second contact surface 312d jointly prevent the outer tank 41 from moving along the Y axis.

As shown in the figure, the first adjustment component 313 has a first internal thread 313a and a first external thread 313b that can be engaged with each other. The first internal thread 313a is formed on the first lower connecting post 311a of the first connecting body 311, and It is located inside the first through hole 311c of the first connection body 311, and the first external thread 313b is formed on the second upper connection post 312b of the second connection body 312 and is located outside the second upper connection post 312b, wherein, When the first internal thread 313a is combined with the first external thread 313b, the second connecting body 312 can be rotated, and can be connected to the first connecting body 311 through the first adjusting component 313, so that the second upper connecting post 312b is positioned Inside the first through hole 311c, however, when the second connecting body 312 and the first connecting body 311 are connected to each other through the first adjusting component 313, the first lower connecting post 311a, the second lower connecting post 312a and The three second upper connecting pillars 312b jointly form a through portion 31a, and the first upper connecting pillar 311b of the first connecting body 311 separately forms a connecting portion 31b, and the through portion 31a penetrates and connects to the first part of the outer kettle 41. The inside of an assembly part 411 allows the inside of the first assembly part 411 to form a accommodating space S between the periphery of the first lower connecting column 311a and the inner diameter of the first assembly part 411, and the accommodating space S surrounds In the penetration portion 31a, the first through hole 311c of the first connecting body 311 and the second through hole 312c of the second connecting body 312 jointly form a through channel 31c passing through the penetration portion 31a and the connecting portion 31b, and The through passage 31c communicates with the second assembly part 412 of the outer kettle 41, whereby the sewing personnel can inject lubricant into the through passage 31c, so that the lubricant can flow into the second assembly part 412 through the through passage 31c , So that the lubricating oil can lubricate between the outer kettle 41 and the inner kettle 42, thereby preventing the outer kettle 41 from rotating relative to the inner kettle 42. In this embodiment, the through channel 31c has a first through hole The limiting member 315 inside the 311c is screwed into the first through hole 311c of the first connecting body 311, and the limiting member 315 is in contact with the second upper connecting post 312b of the second connecting body 312. The limiting member 315 can limit the displacement of the second connecting body 312 in the Y-axis direction through the first entire assembly 313. The limiting member 315 is provided with a receiving groove 315a for oil cotton, and the receiving groove 315a is connected to Through the channel 31c.

Please refer to FIG. 8, because the second connecting body 312 of the hook seat 31 is connected to the first connecting body 311 of the hook seat 31 through the first internal thread 313a inserted into the first external thread 313b, so that the second connection When the main body 312 rotates around the Y-axis, the second connecting body 312 will move back and forth along the Y-axis. In this embodiment, when the second connecting body 312 rotates in a counterclockwise direction, the second connecting body 312 can be away from the first connecting body 311 along the Y axis, so that the entire hook seat 31 can increase the front and rear length of the Y axis direction, and the accommodating space S will increase the size of the space along the Y axis direction. At the same time, the second The gap in the Y-axis direction between the second contact surface 312d of the connecting body 312 and the first assembling part 411 of the outer kettle 41 will increase. On the contrary, when the second connecting body 312 rotates in a clockwise direction, the second connecting The body 312 can be close to the first connecting body 311 along the Y axis, so that the entire hook seat 31 can reduce the front and rear length of the Y axis direction, and the accommodating space S will reduce the size of the space along the Y axis direction, and the second The gap between the contact surface 312d and the first assembling portion 411 in the Y-axis direction will be reduced, whereby the first adjustment assembly 313 can be used to adjust the front and rear lengths of the hook seat 31 in the Y-axis direction, thereby adjusting the first The gap between a contact surface 311d and a second contact surface 312d and the first assembling part 411 prevents the outer pot 41 from moving along the Y axis.

Referring again to FIGS. 6 and 7, the second adjustment component 314 has a second internal thread 314a and a second external thread 314b that can be engaged with each other, and the second internal thread 314a is formed on the sewing portion 282 of the lower tube seat 28 , And the second external thread 314b is formed on the first upper connecting post 311b of the first connecting body 311, and is located at the outer diameter of the first upper connecting post 311b. When the second internal thread 314a and the second external thread 314b are mutually When combined, the partial section of the connecting portion 31b protruding from the seam portion 282 can engage with a locking member 316 as a nut, and the locking member 316 can be rotated on the outer kettle 41 of the rotary hook 40 with the Y axis as the axis. In this case, the first connecting body 311 is prevented from moving back and forth along the Y axis through the second adjusting component 314.

Please refer to FIG. 9, because the first connecting body 311 of the hook seat 31 is connected to the sewing portion 282 of the lower pipe seat 28 through the second internal thread 314a inserted into the second external thread 314b, so that the connecting portion 31b is Y When the shaft is the axis for rotation, the hook seat 31 as a whole will move back and forth along the Y axis. In this embodiment, when the first connecting body 311 rotates counterclockwise with the Y axis as the axis, the hook seat The whole 31 will move forward along the Y axis, so that the hook seat 31 can drive the outer kettle 41 away from the lower tube seat 28. On the contrary, when the first connecting body 311 rotates clockwise about the Y axis, the rotary hook seat 31 The shuttle seat 31 as a whole will move back along the Y axis, so that the hook seat 31 can drive the outer kettle 41 to approach the lower tube seat 28, whereby the second adjustment assembly 314 allows the rotary hook seat 31 to be relative to the lower tube seat 28 The forward and backward movement is performed so that the rotary hook 40 can be adjusted to the forward and backward position of the needle 25.

Please refer to FIGS. 6 and 7 again, the bearing 32 is located inside the accommodating space S, so that the bearing 32 is also located in the first assembly part 411 of the outer kettle 41, so that the bearing 32 surrounds the shuttle seat 31. The set portion 31a is arranged in the Y-axis direction of the rotary hook 40. In this embodiment, the bearing 32 is set as a radial needle roller bearing 32, and has a needle roller retainer 321 showing a hollow cylindrical shape. The device 321 is equipped with a plurality of freely rotatable needle rollers 322, and each needle roller 322 is in line contact with the inner diameter of the first assembling part 411 and the outer diameter of the first lower connecting post 311a at the same time, whereby the hook seat 31 The structural aspect connected to the rotary hook 40 allows the bearing 32 to be located in the first assembly part 411 of the outer kettle 41, so that the structural pattern presented by the mutual assembly of the rotary hook seat 31, the bearing 32 and the outer kettle 41 can be reduced. The longitudinal length in the axial direction, and the sewing portion 282 can be reduced in volume along the Y-axis direction, so that the zigzag sewing machine 2 can sew the shoe mouth hemming for smaller shoe sizes.

Please refer to Figure 6, Figure 7, Figure 10 and Figure 11, the transmission assembly 33 has three transmission parts, one of which is set as a gear to form a first transmission part 331 in the sewing part 282, the first The transmission member 331 is arranged in the Y-axis direction of the rotary hook 40 and is sleeved and fixed outside the first assembly part 411 of the outer kettle 41, so that the first transmission member 331, the first assembly part 411 of the outer kettle 41, the bearing 32 and the rotary The four through portions 31a of the shuttle seat 31 are arranged in sequence from the outside of the first assembling portion 411 to the inside of the first assembling portion 411, and the first assembling portion 411 and the bearing 32 are both located inside the first transmission member 331, The other transmission member is also set as a gear to form a second transmission member 332 in the support portion 281. The second transmission members 332 are arranged at intervals in the X-axis direction of the first transmission member 331 and assembled to the driven assembly 34 , So that the second transmission member 332 is driven by the driven assembly 34 to drive the first transmission member 331 to rotate, and the last transmission member is also set as a gear to form a position between the first transmission member 331 and the second transmission member 332 Between the third transmission member 333, the third transmission member 333 is movably assembled in an elongated through hole 283 formed in the lower tube base 28, so that the third transmission member 333 can adjust its axis in the elongated through hole 283 Fixed position, and the third transmission member 333 is simultaneously engaged with the first transmission member 331 and the second transmission member 332, so that the first transmission member 331 and the third transmission member 333 and the second transmission member 332 and the third transmission member 333 A meshing gap T is formed between.

10 and 12, the height positions of the first transmission member 331, the second transmission member 332, and the third transmission member 333 are different, so that the first transmission member 331, the second transmission member 332 and the The center points of the three transmission parts 333 are not arranged on the same straight line. The third transmission part 333 is movably assembled in the long through hole 283 of the lower tube base 28, so that the third transmission part 333 can be far away from or close to the first The first and second transmission parts 331 and 332 are used to change the gap size of the meshing gap T. As shown in FIG. 10, the third transmission part 333 is assembled in the central section of the elongated through hole 283 so that the third transmission part 333 is close to the first , The second transmission member 331, 332, so that the gap size of the meshing gap T can be reduced, on the contrary, as shown in FIG. 12, the third transmission member 333 is assembled at the end of the elongated through hole 283, so that the third transmission member 333 is away from the first The first and second transmission members 331 and 332 can enlarge the gap size of the meshing gap T. Therefore, the fixed position of the third transmission member 333 in the elongated through hole 283 can be changed to adjust the proper meshing gap T.

Please refer to FIGS. 6 and 7 again, the driven assembly 34 is located in the support portion 281 in the lower tube base 28, and has a first pulley 341 and a second pulley 342. The first pulley 341 passes through a gear set 343. It is assembled on the lower shaft 29 and is connected to the second pulley 342 through a transmission belt 344. The second pulley 342 is arranged in the Y-axis direction of the second transmission member 332 and is connected to the second transmission member 332. In the embodiment, when the upper shaft 23 rotates around the X-axis direction, the upper shaft 23 drives the lower shaft 29 to rotate around the X-axis direction through the transmission shaft 27, and the lower shaft 29 passes through the gear set 343. Drive the first pulley 341 to rotate with the Y-axis direction as the axis, and then the drive belt 344 is driven by the second pulley 342, the second transmission member 332, the third transmission member 333 and the first transmission member 331 in order to drive the rotary hook The outer kettle 41 of 40 rotates around the Y-axis direction as its axis.

The above-mentioned embodiments are only for convenience to illustrate the present invention and are not intended to limit them. Without departing from the spirit of the present invention, those skilled in the industry who are familiar with the scope of the invention’s patent application and the description of the invention make various simple modifications and modifications should still contain Included in the scope of the following patent applications.

1: Conventional zigzag sewing machine 10: front 101: Upper shaft 102: swing mechanism 103: Needle Bar 104: Needle 11: Pillar 111: drive shaft 12: Lower tube seat 121: lower shaft 122: transmission mechanism 122a: first pulley 122b: second pulley 122c: gear set 122d: drive belt 122e: Ball bearing 13: Rotary shuttle 2: Zigzag sewing machine 20: body 21: front 22: Pillar 23: upper shaft 24: Needle bar 25: Needle 26: swing mechanism 27: drive shaft 28: Lower tube seat 281: Support 282: Sewing Department 283: Long through hole 29: Lower shaft 30: Transmission mechanism 31: Rotary shuttle seat 31a: Wearing Department 31b: Connection part 31c: Through channel 311: The first connection body 311a: The first lower connecting column 311b: The first upper connecting column 311c: first through hole 311d: first contact surface 312: Second connection body 312a: The second lower connecting column 312b: The second upper connecting column 312c: second through hole 312d: second contact surface 313: The first adjustment component 313a: first internal thread 313b: The first external thread 314: second adjustment component 314a: second internal thread 314b: second external thread 315: limit piece 315a: Containment slot 316: lock firmware 32: Bearing 321: Needle roller retainer 322: Needle 33: Transmission components 331: first transmission 332: second transmission 333: Third Transmission 34: driven component 341: The first pulley 342: second pulley 343: Gear Set 344: drive belt 40: Rotary shuttle 41: Outer Cauldron 411: First Assembly Department 412: Second Assembly Department 42: inner kettle S: housing space T: meshing gap

Figure 1 is a schematic diagram of a conventional zigzag sewing machine; Figure 2 is a schematic diagram of the internal components of the conventional zigzag sewing machine; Figure 3 is a schematic diagram of the rotary hook in Figure 2 installed on the transmission mechanism; Figure 4 is a schematic diagram of the zigzag sewing machine of the present invention; Figure 5 is a schematic diagram of the internal components of the zigzag sewing machine of the present invention; Figure 6 is an exploded view of the transmission mechanism of the present invention; Figure 7 is a cross-sectional view of the transmission mechanism of the present invention; FIG. 8 is a schematic diagram of adjusting the size of the accommodating space by the first adjusting component; Figure 9 is a schematic diagram of the hook seat being able to move relative to the down tube seat through the second adjusting component; Figure 10 is a schematic diagram of the first, second, and third transmission members being engaged with each other; Figure 11 is a schematic diagram of the bearing located inside the first transmission member; and Fig. 12 is a schematic diagram of moving the third transmission member to change the gap size of the meshing gap.

28: Lower tube seat

281: Support

282: Sewing Department

31: Rotary shuttle seat

31a: Wearing Department

31b: Connection part

31c: Through channel

311a: The first lower connecting column

311b: The first upper connecting column

311c: first through hole

311d: first contact surface

312a: The second lower connecting column

312b: The second upper connecting column

312c: second through hole

312d: second contact surface

313: The first adjustment component

313a: first internal thread

313b: The first external thread

314: second adjustment component

314a: second internal thread

314b: second external thread

315: limit piece

315a: Containment slot

316: lock firmware

32: Bearing

322: Needle

33: Transmission components

331: first transmission

332: second transmission

333: Third Transmission

342: second pulley

344: drive belt

40: Rotary shuttle

41: Outer Cauldron

411: First Assembly Department

412: Second Assembly Department

42: inner kettle

S: housing space

Claims (10)

A zigzag sewing machine with a needle that can reciprocate along the X-axis direction and a lower tube seat extending along the X-axis direction. The lower tube seat is provided with a lower shaft inside, and the lower shaft passes through a transmission mechanism Drive an outer kettle to rotate with the Y axis as the axis, and is characterized in that: the above-mentioned transmission mechanism includes: A rotating shuttle seat is located in the Y-axis direction of the outer kettle, and has a connecting portion connected to the lower pipe seat and a penetration portion arranged inside the outer kettle, between the penetration portion and the outer kettle There is an accommodation space inside the outer kettle; A bearing located in the accommodating space and in contact with the outer diameter of the penetration portion and the inner diameter of the outer kettle; and A first transmission member can drive the outer kettle to rotate and is connected to the outside of the outer kettle, so that the first transmission member, the bearing and the penetration part are arranged in order from the outside to the inside. The zigzag sewing machine according to claim 1, wherein the shuttle seat forms a through passage through the connecting portion and the through portion, and the through passage is connected to the inside of the outer kettle. The zigzag sewing machine according to claim 1, wherein the hook seat has a first connecting body connected to the lower tube seat and a second connecting body inside the outer kettle, the first connecting body and A first adjusting component is provided between the second connecting body, and the first adjusting component is used to adjust the size of the gap between the second connecting body and the outer kettle in the Y-axis direction, so as to synchronize the adjustment of the accommodation space on the Y-axis. The amount of space in the direction. The zigzag sewing machine according to claim 3, wherein the first connecting body and the second connecting body respectively have a first contact surface and a second contact surface that can contact the outer kettle, and the second connecting body The body can move closer to or away from the first connecting body along the Y-axis direction through the first adjusting component, so that the first contact surface and the second contact surface can jointly prevent the outer kettle from moving along the Y axis. The zigzag sewing machine according to claim 4, wherein the first connection body has a first lower connection post contacting the bearing and a first upper connection post provided with the first contact surface, and the second connection The main body has a second lower connecting column provided with the second contact surface and a second upper connecting column connected to the first lower connecting column through the first adjusting component, and the first lower connecting column and the second lower connecting column The connecting column and the second upper connecting column jointly form the above-mentioned through part, and the first upper connecting column alone forms the above-mentioned connecting part. According to claim 5 of the zigzag sewing machine, wherein the first connecting body further has a through hole for accommodating the second upper connecting column, the through hole has a limiting member inside, and the limiting member spirals It is fitted into the through hole and contacts the second connecting column, and the limiting member is provided with a receiving groove for oil cotton. The zigzag sewing machine according to claim 1, wherein a second adjustment assembly is provided between the connecting portion and the down tube base, and the second adjustment assembly is used to allow the hook base to move relative to the down tube base , So that the shuttle seat can drive the outer kettle to selectively approach or move away from the lower tube seat. The zigzag sewing machine according to claim 7, wherein the partial length of the connecting portion protrudes from the lower tube seat, and a locking member is installed, and the locking member contacts the surface of the lower tube seat so that the locking member can be When the outer kettle is rotated with the Y-axis as the axial direction, the hook seat is prevented from being displaced through the second adjustment assembly. The zigzag sewing machine according to claim 1, wherein the transmission mechanism further has a second transmission member capable of driving the first transmission member to rotate, and a driven assembly in the Y-axis direction of the second transmission member, The second transmission member is located in the X-axis direction of the first transmission member, and one end of the driven assembly is connected to the second transmission member, and the end away from the outer kettle is connected to the lower shaft. The zigzag sewing machine according to claim 9, wherein the transmission mechanism further has a third transmission member between the first transmission member and the second transmission member, and the third transmission member is simultaneously engaged with the first transmission member. The transmission part and the second transmission part form an engagement gap between the first transmission part and the third transmission part and between the second transmission part and the third transmission part, and the third transmission part is movably assembled to the down tube The seat enables the third transmission member to move relative to the lower tube seat to adjust the gap size of the meshing gap.

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