Sewing machine with turning piece

Abstract

The utility model discloses a sewing machine with a turning piece. The sewing machine comprises a machine base, a sewing machine head, a rotating shuttle assembly and an extension arm. A transmission shaft is arranged in the extension arm; the end, away from the machine base, of the extension arm is provided with a turning piece in an extending mode, the turning piece comprises a first connecting part and a second connecting part, the rotating shuttle assembly is arranged on the second connecting part, the transmission shaft is in transmission connection with the rotating shuttle assembly through the linkage assembly, and a machining station is defined by the sewing machine head and the rotating shuttle assembly. An avoiding position is defined by the machine base, the extension arm and the first connecting part; thus, the first connecting part extends in the vertical direction, a processing position suitable for sewing is provided, meanwhile, an avoiding position which is large enough is provided, a shell of the luggage can penetrate through the avoiding position easily, the avoiding position can provide an avoiding space which is large enough for the luggage in the sewing process, in the actual sewing process, the shell and a bottom shell of the luggage do not need to be alternated up and down, and the sewing efficiency is improved. Therefore, the sewing effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of sewing machines, in particular to a sewing machine with a crooked piece, which is mainly used for, but not limited to, sewing bags. Background Art

[0002] A sewing machine uses one or more threads to create one or more seams, interweaving or stitching one or more layers of material. It can sew fabrics such as cotton, linen, silk, wool, and rayon, as well as products such as leather, plastic, and paper. The seams produced by these machines are neat, beautiful, smooth, and strong, while also being fast and easy to use. This has led to art forms such as hand-push embroidery and computerized embroidery. The most commonly used sewing machine in luggage production, also known as an industrial lockstitch sewing machine, can be used to sew fabrics, linings, and other details on bags. These machines offer fast speeds, even stitches, and easily adjustable thread tension.

[0003] The prior art discloses a small mouth extended type computer sewing machine, comprising a casing base, a machine head, a material transfer mechanism arranged between the casing base and the machine head, and a driving member for driving the material transfer mechanism to move, wherein the casing base is fixedly connected to an external sewing machine table, the machine head is arranged above the casing base, and a slide rail is arranged at the lower end of the machine head, and the slide rail is used to be slidably connected to the material transfer mechanism; a small mouth extended seat is detachably provided at the front end of the casing base, and the small mouth extended seat is located below the slide rail and is used to set the material to be sewn; the small mouth extended seat has a straight arm In the design of this type, when the processing position is formed between the small mouth extension seat and the machine head, the avoidance space between the upper end surface of the small mouth extension seat and the lower end surface of the machine head is reduced; since the luggage is made of hard shell material, the luggage needs to be suspended for sewing during sewing. Due to the reduction of the avoidance space, it is not convenient for the outer shell of the luggage to pass through during the sewing process, resulting in the need to make the entire outer shell of the luggage be located outside the small mouth extension seat during the sewing process, so that the outer shell and the bottom shell of the luggage need to be sewn alternately up and down during sewing; in addition, the straight arm design is usually manually supported by the hand and lacks a force-bearing mechanism.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a sewing machine with a crooked piece and a sewing machine. Through the structural design and coordination between the machine base, the extension arm and the crooked piece, the first connecting part is extended in the vertical direction to provide a processing position suitable for sewing while having a sufficiently large avoidance position. In this way, the avoidance position makes it easy for the outer shell of the luggage to pass through. During the sewing process, the avoidance position can provide the luggage with a sufficiently large avoidance space. During actual sewing, the outer shell and the bottom shell of the luggage do not need to be alternated up and down, thereby improving the sewing effect.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A sewing machine with a crooked part, comprising a base and a sewing head, a rotary hook assembly and an extension arm arranged on the base; the extension arm is extended from one end of the base, and a transmission shaft is arranged in the extension arm; the characteristics are:

[0008] A bending piece is provided on one end of the extension arm away from the machine base, and the bending piece includes a first connecting portion extending in the vertical direction of the machine base and a second connecting portion extending laterally from the extending end of the first connecting portion, and the second connecting portion extends along the length direction of the extension arm; the rotary hook assembly is arranged on the second connecting portion, and the transmission shaft is connected to the rotary hook assembly through a linkage assembly, and a processing position is formed between the sewing machine head and the rotary hook assembly; an avoidance position for providing avoidance space for products to be sewn is formed between the machine base, the extension arm and the first connecting portion.

[0009] As a preferred solution, a crossbeam is provided on the machine base, and the crossbeam is provided above the extension arm; the first connecting part is extended upward from the right end of the extension arm, and an avoidance position is formed between the lower end face of the crossbeam, the upper end face of the extension arm and the left end face of the first connecting part.

[0010] As a preferred solution, the second connection portion is extended rightward from the upper end of the first connection portion, wherein an accommodation position is formed between the upper end surface of the first connection portion and the upper end surface of the second connection portion.

[0011] As a preferred solution, the transmission shaft includes a tooth lifting shaft and a feeding shaft, and one end of the tooth lifting shaft and the feeding shaft is connected to the rotary shuttle assembly through a linkage assembly, and the linkage assembly is arranged in the extension direction of the first connecting part and is set in the first connecting part.

[0012] As a preferred solution, the rotary hook assembly includes a rotary hook and a first connecting shaft and a second connecting shaft connected to the rotary hook;

[0013] The linkage assembly includes a first synchronous wheel, a second synchronous wheel, a first synchronous belt and a feeding mechanism; the first synchronous wheel is connected to the other end of the tooth lifting shaft, and the second synchronous wheel is located above the first synchronous wheel; the second synchronous wheel is arranged on the first connecting shaft, and the first synchronous wheel is connected to the second synchronous wheel through the first synchronous belt;

[0014] The feeding mechanism includes a first feeding rod and a second feeding rod. The first feeding rod is rotatably connected to the other end of the feeding shaft; the second feeding rod extends upward from the other end of the first feeding rod; and the other end of the second feeding rod is transmission-connected to the second connecting shaft.

[0015] As a preferred solution, the first connecting portion extends downward from the right side of the extension arm, and an avoidance position is formed between the right end surface of the machine base, the lower end surface of the extension arm and the left end surface of the first connecting portion.

[0016] As a preferred solution, the second connection portion is extended rightward from the lower end of the first connection portion, wherein a placement position is formed between the right end surface of the first connection portion and the upper end surface of the second connection portion.

[0017] As a preferred solution, a synchronous belt transmission assembly is also provided at the left end of the tooth lifting shaft and the feeding shaft, and the synchronous belt transmission assembly is provided with a third connecting shaft, a fourth connecting shaft, a third synchronous wheel, a fourth synchronous wheel and a second synchronous belt. The third synchronous wheel is provided on one end of the tooth lifting shaft, and the fourth synchronous wheel is provided on one end of the third connecting shaft. The third synchronous wheel is connected to the fourth synchronous wheel through the second synchronous belt transmission; the feeding shaft is connected to one end of the fourth connecting shaft through a linkage rod transmission.

[0018] As a preferred solution, the second synchronous wheel is located below the first synchronous wheel; the second synchronous wheel is arranged on the first connecting shaft, and the first synchronous wheel is connected to the second synchronous wheel through a first synchronous belt;

[0019] The second feeding rod is extended downward from the other end of the first feeding rod; the other end of the second feeding rod is transmission-connected to the second connecting shaft.

[0020] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it is mainly achieved through the structural design and cooperation between the machine base, the extension arm and the crooked piece. The crooked piece includes a first connecting part extending along the vertical direction of the machine base and a second connecting part extending along one end of the first connecting part, and the second connecting part is extended along the length direction of the extension arm; an avoidance position is formed between the machine base, the extension arm and the first connecting part. In this way, the first connecting part is extended in the vertical direction to provide a suitable sewing processing position while having a sufficiently large avoidance position. In this way, the avoidance position makes it easy for the outer shell of the bag to pass through. During the sewing process, the avoidance position can provide a sufficiently large avoidance space for the bag. During actual sewing, the outer shell and the bottom shell of the bag do not need to be alternated up and down, thereby improving the sewing effect;

[0021] Another thing is the design of the placement position, which provides a bearing position for the sewing area of ​​the product to be processed, can reduce the problem of fabric slippage, and effectively improve the accuracy of the wiring.

[0022] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the first embodiment of the present utility model;

[0024] Figure 2 This is a three-dimensional diagram of an extension arm according to a first embodiment of the present invention;

[0025] Figure 3 This is another three-dimensional diagram of the first embodiment of the present invention (feeding shaft, tooth lifting shaft and linkage assembly);

[0026] Figure 4 This is a partial structural diagram of the linkage assembly of Example 1 of the present utility model;

[0027] Figure 5 This is a perspective view of the second embodiment of the present utility model;

[0028] Figure 6 This is a perspective view of the extension arm of the second embodiment of the present utility model;

[0029] Figure 7 This is another three-dimensional diagram of the second embodiment of the present invention (feeding shaft, tooth lifting shaft and linkage assembly);

[0030] Figure 8 This is another three-dimensional diagram of the second embodiment of the present invention (feeding shaft, tooth lifting shaft and linkage assembly).

[0031] Description of the accompanying drawings:

[0032] 10. Machine base 11. Crossbeam

[0033] 20. Sewing machine head 21. Processing position

[0034] 30. Rotary hook assembly 31. Rotary hook

[0035] 32. First connecting shaft 33. Second connecting shaft

[0036] 40. Extension arm 41. Transmission shaft

[0037] 411, tooth lifting shaft 412, feeding shaft

[0038] 42. Linkage assembly 421. First synchronization wheel

[0039] 422, second synchronous wheel 423, first synchronous belt

[0040] 424, first feeding rod 425, second feeding rod

[0041] 43. Synchronous belt drive assembly 431. Third connecting shaft

[0042] 432, fourth connecting shaft 433, third synchronous wheel

[0043] 434, fourth synchronous wheel 435, second synchronous belt

[0044] 50. Bend member 51. First connecting portion

[0045] 52. Second connection part 53. Avoidance position

[0046] 54. Placement position. DETAILED DESCRIPTION

[0047] Please refer to Figures 1 to 8 As shown, it shows the specific structure of various embodiments of the present utility model.

[0048] In the description of the present invention, it should be noted that directional words, such as the terms "up", "down", "front", "back", "left", "right", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the drawings or during normal wear and use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0049] like Figures 1 to 4 The above embodiment embodies the specific structure of the first embodiment:

[0050] A sewing machine with a crooked member 50 includes a base 10, a sewing machine head 20, a rotary hook assembly 30 and an extension arm 40.

[0051] The sewing machine head 20, the rotary hook assembly 30 and the extension arm 40 are arranged on the machine base 10; the extension arm 40 is extended from one end of the machine base 10, and a transmission shaft 41 is arranged in the extension arm 40;

[0052] Preferably, a crossbeam 11 is provided on the machine base 10, and the crossbeam 11 is provided above the extension arm 40; the first connecting portion 51 extends upward from the right end of the extension arm 40, and an avoidance position 53 is formed between the lower end surface of the crossbeam 11, the upper end surface of the extension arm 40 and the left end surface of the first connecting portion 51.

[0053] A bend 50 is provided at one end of the extension arm 40 extending away from the machine base, and the bend 50 includes a first connection portion 51 extending in the vertical direction of the machine base 10 and a second connection portion 52 extending laterally from the extended end of the first connection portion 51, and the second connection portion 52 extends along the length direction of the extension arm 40; the rotary hook assembly 30 is arranged on the second connection portion 52, and the transmission shaft 41 is connected to the rotary hook assembly 30 through the linkage assembly 42, and a processing position 21 is formed between the sewing machine head 20 and the rotary hook assembly 30; an avoidance position 53 for providing avoidance space for products to be sewn is formed between the machine base 10, the extension arm 40 and the first connection portion 51.

[0054] Preferably, the second connecting portion 52 is extended to the right from the upper end of the first connecting portion 51, wherein a placement position 54 is formed between the upper end surface of the first connecting portion 51 and the upper end surface of the second connecting portion 52, providing a bearing position for the sewing area of ​​the product to be processed, which can reduce the problem of fabric slipping and effectively improve the accuracy of the routing.

[0055] Preferably, the transmission shaft 41 includes a tooth-lifting shaft 411 and a feed shaft 412, one end of which is connected to the rotary hook assembly 30 via a linkage assembly 42, and the linkage assembly 42 is arranged in the extension direction of the first connecting portion 51 and is disposed in the first connecting portion 51. In this embodiment, the other ends of the tooth-lifting shaft 411 and the feed shaft 412 are used for transmission connection with the subsequent sewing machine main shaft and auxiliary shaft. This type of transmission coordination is a well-known technology in the art and will not be described in detail here.

[0056] Preferably, the rotary shuttle assembly 30 includes a rotary shuttle 31 and a first connecting shaft 32 and a second connecting shaft 33 connected to the rotary shuttle 31; the linkage assembly 42 includes a first synchronous wheel 421, a second synchronous wheel 422, a first synchronous belt 423 and a feeding mechanism; the first synchronous wheel 421 is connected to the other end of the tooth lifting shaft 411, and the second synchronous wheel 422 is located above the first synchronous wheel 421; the second synchronous wheel 422 is arranged on the first connecting shaft 32, and the first synchronous wheel 421 is connected to the second synchronous wheel 422 through the first synchronous belt 423; the feeding mechanism includes a first feeding rod 424 and a second feeding rod 425, the first feeding rod 424 is rotatably connected to the other end of the feeding shaft 412; the second feeding rod 425 extends upward from the other end of the first feeding rod 424; the other end of the second feeding rod 425 is transmission-connected to the second connecting shaft 33. The rotation of the rotary hook assembly 30 is driven by the cooperation between the first connecting shaft 32, the second connecting shaft 33, the first synchronous wheel 421, the second synchronous wheel 422, the first synchronous belt 423 and the feeding mechanism, so that it does not slip during operation, has an accurate transmission ratio, high transmission efficiency, a compact structure, and is easy to maintain.

[0057] like Figures 5 to 8 As shown, it embodies the specific structure of the second embodiment. The difference between the second embodiment and the first embodiment is that:

[0058] The first connecting portion 51 extends downward from the right side of the extension arm 40 , and an escape position 53 is formed between the right end surface of the base 10 , the lower end surface of the extension arm 40 , and the left end surface of the first connecting portion 51 .

[0059] Preferably, the second connection portion 52 extends rightward from the lower end of the first connection portion 51 , wherein a placement position 54 is formed between the right end surface of the first connection portion 51 and the upper end surface of the second connection portion 52 .

[0060] Preferably, a synchronous belt transmission assembly 43 is also provided at the left end of the tooth lifting shaft 411 and the feeding shaft 412, and the synchronous belt transmission assembly 43 is provided with a third connecting shaft 431, a fourth connecting shaft 432, a third synchronous wheel 433, a fourth synchronous wheel 434 and a second synchronous belt 435. The third synchronous wheel 433 is provided on one end of the tooth lifting shaft 411, and the fourth synchronous wheel 434 is provided on one end of the third connecting shaft 431. The third synchronous wheel 433 is connected to the fourth synchronous wheel 434 through the second synchronous belt 435; the feeding shaft 412 is connected to one end of the fourth connecting shaft 432 through a linkage rod.

[0061] Preferably, the second synchronous wheel 422 is located below the first synchronous wheel 421; the second synchronous wheel 422 is provided on the first connecting shaft 32, and the first synchronous wheel 421 is connected to the second synchronous wheel 422 via a first synchronous belt 423;

[0062] The second feeding rod 425 extends downward from the other end of the first feeding rod 424 ; the other end of the second feeding rod 425 is transmission-connected to the second connecting shaft 33 .

[0063] The design focus of the present invention lies in the structural design and coordination between the machine base, the extension arm and the bend member. The bend member includes a first connection portion extending in the vertical direction of the machine base and a second connection portion extending in the length direction of the first connection portion. An avoidance position is formed between the machine base, the extension arm and the first connection portion. In this way, the vertical extension of the first connection portion is used to provide a suitable sewing processing position while providing a sufficiently large avoidance position. In this way, the avoidance position makes it easy for the outer shell of the bag to pass through. During the sewing process, the avoidance position can provide a sufficiently large avoidance space for the bag. During actual sewing, the outer shell and the bottom shell of the bag do not need to be alternated up and down, thereby improving the sewing effect.

[0064] Another thing is the design of the placement position, which provides a bearing position for the sewing area of ​​the product to be processed, can reduce the problem of fabric slippage, and effectively improve the accuracy of the wiring.

[0065] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sewing machine with a crooked member, comprising a base, a sewing head, a rotary hook assembly, and an extension arm disposed on the base; the extension arm extending from one end of the base, the extension arm having a transmission shaft disposed therein; and characterized in that: A bending piece is provided on one end of the extension arm away from the machine base, and the bending piece includes a first connecting portion extending in the vertical direction of the machine base and a second connecting portion extending laterally from the extending end of the first connecting portion, and the second connecting portion extends along the length direction of the extension arm; the rotary hook assembly is arranged on the second connecting portion, and the transmission shaft is connected to the rotary hook assembly through a linkage assembly, and a processing position is formed between the sewing machine head and the rotary hook assembly; an avoidance position for providing avoidance space for products to be sewn is formed between the machine base, the extension arm and the first connecting portion.

2. A sewing machine with a crooked member according to claim 1, characterized in that: A crossbeam is provided on the machine base, and the crossbeam is provided above the extension arm; the first connecting part extends upward from the right end of the extension arm, and an avoidance position is formed between the lower end face of the crossbeam, the upper end face of the extension arm and the left end face of the first connecting part.

3. A sewing machine with a crooked member according to claim 2, characterized in that: The second connection portion extends rightward from the upper end of the first connection portion, wherein an installation position is formed between the upper end surface of the first connection portion and the upper end surface of the second connection portion.

4. A sewing machine with a crooked member according to claim 1, characterized in that: The transmission shaft includes a tooth lifting shaft and a feeding shaft. One end of the tooth lifting shaft and the feeding shaft is connected to the rotary hook assembly through a linkage assembly. The linkage assembly is arranged in the extension direction of the first connecting part and is set in the first connecting part.

5. A sewing machine with a crooked member according to claim 4, characterized in that: The rotary hook assembly includes a rotary hook and a first connecting shaft and a second connecting shaft connected to the rotary hook; The linkage assembly includes a first synchronous wheel, a second synchronous wheel, a first synchronous belt and a feeding mechanism; the first synchronous wheel is connected to the other end of the tooth lifting shaft, and the second synchronous wheel is located above the first synchronous wheel; the second synchronous wheel is arranged on the first connecting shaft, and the first synchronous wheel is connected to the second synchronous wheel through the first synchronous belt; The feeding mechanism includes a first feeding rod and a second feeding rod. The first feeding rod is rotatably connected to the other end of the feeding shaft; the second feeding rod extends upward from the other end of the first feeding rod; and the other end of the second feeding rod is transmission-connected to the second connecting shaft.

6. A sewing machine with a crooked member according to claim 1, characterized in that: The first connecting portion extends downward from the right side of the extension arm, and an avoidance position is formed between the right end surface of the machine base, the lower end surface of the extension arm and the left end surface of the first connecting portion.

7. A sewing machine with a crooked member according to claim 6, characterized in that: The second connection portion extends rightward from the lower end of the first connection portion, wherein a placement position is formed between the right end surface of the first connection portion and the upper end surface of the second connection portion.

8. A sewing machine with a crooked member according to claim 4, characterized in that: The left end of the tooth lifting shaft and the feeding shaft is also provided with a synchronous belt transmission assembly, and the synchronous belt transmission assembly is provided with a third connecting shaft, a fourth connecting shaft, a third synchronous wheel, a fourth synchronous wheel and a second synchronous belt. The third synchronous wheel is provided on one end of the tooth lifting shaft, and the fourth synchronous wheel is provided on one end of the third connecting shaft. The third synchronous wheel is connected to the fourth synchronous wheel through the second synchronous belt transmission; the feeding shaft is connected to one end of the fourth connecting shaft through a linkage rod transmission.

9. A sewing machine with a crooked member according to claim 5, characterized in that: The second synchronous wheel is located below the first synchronous wheel; the second synchronous wheel is arranged on the first connecting shaft, and the first synchronous wheel is connected to the second synchronous wheel through a first synchronous belt; The second feeding rod is extended downward from the other end of the first feeding rod; the other end of the second feeding rod is transmission-connected to the second connecting shaft.

Images