Stitch alignment adjusting device of flat seaming machine

Abstract

The utility model provides a stitch alignment adjusting device of a flat seaming machine, and relates to the technical field of stitch alignment devices. Comprising a machine base, a machine body is fixedly installed at the top of the outer surface of the machine base, and a needle is arranged at the bottom of the machine body; a limiting alignment structure is arranged on one side of the machine base. An auxiliary dismounting structure is arranged between the machine base and the limiting alignment structure. The limiting and aligning structure comprises a first rectangular frame, a first motor is fixedly installed on one side of the outer surface of the first rectangular frame, the limiting and aligning structure is arranged, cloth can be fixed in an auxiliary mode in cooperation with a clamping plate under the action of a U-shaped clamping plate, and meanwhile the cloth can be fixed through a second screw rod and a second screw hole block under the action of a second screw rod and a second screw hole block; the distance between the two U-shaped clamping plates is adjusted, cloth of different sizes can be fixed in an auxiliary mode, meanwhile, a first screw and a first screw hole block can be matched to move, a second rectangular frame can be driven to move, and then the cloth can be driven to conduct stitch alignment.

Description

Technical Field

[0001] This utility model relates to the technical field of stitch alignment devices, and in particular to a stitch alignment adjustment device for a cover-sewing machine. Background Technology

[0002] A coverstitch machine is an industrial sewing machine that uses both needle and shuttle threads to create a single-sided covert chain stitch on the underside of the fabric, or to add a covert thread on the front side of the fabric to create a double-sided covert chain stitch, thus sewing together two or more layers of fabric. The thread track created by the needle of the coverstitch machine is the stitch, and the alignment of the stitch is usually adjusted by adjusting the differential.

[0003] In practical applications, existing stitch alignment adjustment devices (i.e., differential adjustment mechanisms) have relatively complete structures and functions, and can basically meet daily usage needs. However, the following problems still exist:

[0004] In practical use, differential adjustment still relies on the friction at the bottom to move the fabric block, thereby making the stitches run smoothly and achieving stitch alignment. However, when encountering changes in external force or when changing the fabric midway, the differential mechanism needs to be adjusted at any time. Moreover, the method of passively moving the fabric forward by friction in the differential mechanism is very easy to cause fabric wrinkles. It is very inconvenient to constantly observe the changes in the stitches during use.

[0005] Therefore, this utility model provides a stitch alignment adjustment device for a cover-sewing machine. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a stitch alignment adjustment device for a coverstitch machine.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a stitch alignment adjustment device for a coverstitch sewing machine, comprising a base, an assembly fixedly mounted on the top of the outer surface of the base, and a needle provided at the bottom of the assembly; a limiting alignment structure is provided on one side of the base; an auxiliary disassembly and assembly structure is provided between the base and the limiting alignment structure; the limiting alignment structure includes a first rectangular frame, a first motor fixedly mounted on one side of the outer surface of the first rectangular frame, a first screw fixedly connected to the output end of the first motor, a first screw threadedly connected to the outer surface of the first screw, and the outer surface of the first screw threadedly connected to the inner wall of the first rectangular frame.

[0008] In a preferred embodiment, a connecting round block is fixedly connected to one side of the outer surface of the first screw hole block, a second rectangular frame is fixedly connected to one side of the outer surface of the connecting round block, a second motor is fixedly installed on one side of the outer surface of the second rectangular frame, a second screw is fixedly connected to the output end of the second motor, the two ends of the second screw have opposite thread directions, two second screw hole blocks are symmetrically threaded to the outer surface of the second screw, the outer surface of the second screw hole block is slidably connected to the inner wall of the second rectangular frame, a U-shaped clamping plate is fixedly connected to one side of the outer surface of the second screw hole block, a third screw is threaded to the top inner wall of the U-shaped clamping plate, a clamping plate is rotatably connected to the bottom end of the third screw, a limiting round rod is fixedly connected to the top of the outer surface of the clamping plate, and the limiting round rod is slidably disposed on the inner wall of the U-shaped clamping plate.

[0009] The technical effect of adopting the above-mentioned further solution is that, under the action of the first screw and the first screw hole block, the second rectangular frame can be driven to move left and right, which in turn can drive the U-shaped clamping plate to move in conjunction with the second screw and the second screw hole block. The distance between the two U-shaped clamping plates can be adjusted, and fabrics of different sizes can be clamped and fixed. In addition, the stitches can be aligned in conjunction with the second rectangular frame during the movement. Furthermore, this method can control the movement of the first screw hole block by controlling the rotation speed of the first screw, thereby enabling stitch alignment.

[0010] In a preferred embodiment, the auxiliary disassembly and assembly structure includes a rectangular slot, which is formed on one inner wall of the base. A rectangular block is engaged with the inner wall of the rectangular slot, and a rectangular connecting block is fixedly connected to one side of the outer surface of the rectangular block. The top of the outer surface of the rectangular connecting block is fixedly connected to the bottom of the outer surface of the first rectangular frame.

[0011] The technical effect of adopting the above-mentioned further solution is that, under the action of the rectangular card block and the rectangular card slot, the rectangular connecting block and the base can be disassembled and assembled, and then the first rectangular frame and other components can be disassembled and assembled, which facilitates replacement and maintenance.

[0012] In a preferred embodiment, the inner wall of the base is provided with a first insertion hole, the inner wall of the rectangular card block is provided with a second insertion hole, a threaded insertion rod is inserted into the inner wall of the first insertion hole and the second insertion hole, and a fixing nut is threaded to one end of the outer surface of the threaded insertion rod.

[0013] The technical effect of adopting the above-mentioned further solution is that, under the action of the first and second insertion holes, the rectangular card block and the rectangular card slot can be further fixed in conjunction with the threaded insertion rod and the fixing nut, thereby making the fixation more stable.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] By setting a limiting alignment structure, the fabric can be assisted in being fixed by the U-shaped clamping plate in conjunction with the clamping plate. At the same time, the distance between the two U-shaped clamping plates can be adjusted by the second screw and the second screw hole block, thereby assisted in fixing fabrics of different sizes. In addition, the movement of the first screw and the first screw hole block can drive the movement of the second rectangular frame, thereby aligning the stitches of the fabric. By setting an auxiliary disassembly and assembly structure, the rectangular connecting block and the first rectangular frame can be assisted in being disassembled and assembled by the rectangular card block and the rectangular card slot. At the same time, the rectangular card block and the rectangular card slot can be assisted in being disassembled and fixed by the threaded insertion rod. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a stitch alignment adjustment device for a coverstitch machine provided by this utility model;

[0017] Figure 2 A schematic diagram of the structure of the first rectangular frame of a stitch alignment adjustment device for a cover stitch machine provided by this utility model;

[0018] Figure 3 A schematic diagram of the second rectangular frame of a stitch alignment adjustment device for a cover stitch machine provided by this utility model;

[0019] Figure 4 A schematic diagram of the base of a stitch alignment adjustment device for a cover-sewing machine provided by this utility model.

[0020] Legend:

[0021] 1. Base; 2. Body; 3. Needle;

[0022] 4. Limiting and Alignment Structure; 41. First Rectangular Frame; 42. First Motor; 43. First Screw; 44. First Screw Hole Block; 45. Connecting Round Block; 46. Second Rectangular Frame; 47. Second Motor; 48. Second Screw; 49. Second Screw Hole Block; 410. U-Shaped Clamping Plate; 411. Third Screw; 412. Clamping Plate; 413. Limiting Round Rod;

[0023] 5. Auxiliary disassembly and assembly structure; 51. Rectangular slot; 52. Rectangular block; 53. First insertion hole; 54. Second insertion hole; 55. Rectangular connecting block; 56. Threaded insertion rod; 57. Fixing nut. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4 As shown, this embodiment provides a technical solution: a stitch alignment adjustment device for a coverstitch sewing machine, including a base 1, a body 2 fixedly installed on the top of the outer surface of the base 1, and a needle 3 provided at the bottom of the body 2; a limiting alignment structure 4 is provided on one side of the base 1; an auxiliary disassembly and assembly structure 5 is provided between the base 1 and the limiting alignment structure 4; the limiting alignment structure 4 includes a first rectangular frame 41, a first motor 42 fixedly installed on one side of the outer surface of the first rectangular frame 41, a first screw 43 fixedly connected to the output end of the first motor 42, a first screw hole block 44 threadedly connected to the outer surface of the first screw 43, and the outer surface of the first screw hole block 44 slidably connected to the inner wall of the first rectangular frame 41;

[0026] By setting the limiting alignment structure 4, the fabric can be assisted in being fixed by the U-shaped clamping plate 410 in conjunction with the clamping plate 412. At the same time, the distance between the two U-shaped clamping plates 410 can be adjusted by the second screw 48 and the second screw hole block 49, thereby assisted in fixing fabrics of different sizes. In addition, the movement of the first screw 43 and the first screw hole block 44 can drive the movement of the second rectangular frame 46, thereby aligning the stitches of the fabric. By setting the auxiliary disassembly and assembly structure 5, the rectangular connecting block 55 and the first rectangular frame 41 can be assisted in being disassembled and assembled by the rectangular card block 52 and the rectangular card slot 51. At the same time, the rectangular card block 52 and the rectangular card slot 51 can be assisted in being disassembled and fixed by the threaded insertion rod 56.

[0027] Going further, such as Figures 2-3As shown: A connecting round block 45 is fixedly connected to one side of the outer surface of the first screw hole block 44. A second rectangular frame 46 is fixedly connected to one side of the outer surface of the connecting round block 45. A second motor 47 is fixedly installed on one side of the outer surface of the second rectangular frame 46. A second screw 48 is fixedly connected to the output end of the second motor 47. The two ends of the second screw 48 have opposite thread directions. Two second screw hole blocks 49 are symmetrically threaded on the outer surface of the second screw 48. The outer surface of the second screw hole blocks 49 is slidably connected to the inner wall of the second rectangular frame 46. A U-shaped clamping plate 410 is fixedly connected to one side of the outer surface of the second screw hole blocks 49. A third screw 411 is threadedly connected to the top inner wall of the U-shaped clamping plate 410. The bottom end of the third screw 411 is rotatably connected to... A clamping plate 412 is attached, and a limiting rod 413 is fixedly connected to the top of the outer surface of the clamping plate 412. The limiting rod 413 is slidably disposed on the inner wall of the U-shaped clamping plate 410. Under the action of the first screw 43 and the first screw hole block 44, the second rectangular frame 46 can be driven to move left and right. In turn, it can cooperate with the second screw 48 and the second screw hole block 49 to drive the U-shaped clamping plate 410 to move. The distance between the two U-shaped clamping plates 410 can be adjusted, and fabrics of different sizes can be clamped and fixed. In turn, the stitches can be aligned during the movement of the second rectangular frame 46. This method can also control the movement of the first screw hole block 44 by controlling the rotation speed of the first screw 43, thereby aligning the stitches.

[0028] The above solution also suffers from the problem that components such as the first rectangular frame 41 and the second rectangular frame 46 are fixedly welded to the base 1, making disassembly and assembly inconvenient during maintenance and repair. Figure 2 and Figure 4 As shown: In this solution, the auxiliary disassembly and assembly structure 5 includes a rectangular slot 51, which is opened on the inner wall of one side of the base 1. A rectangular block 52 is engaged with the inner wall of the rectangular slot 51. A rectangular connecting block 55 is fixedly connected to one side of the outer surface of the rectangular block 52. The top of the outer surface of the rectangular connecting block 55 is fixedly connected to the bottom of the outer surface of the first rectangular frame 41. Under the action of the rectangular block 52 and the rectangular slot 51, the rectangular connecting block 55 can be disassembled and assembled with the base 1, thereby allowing the disassembly and assembly of components such as the first rectangular frame 41 to be convenient for replacement and maintenance.

[0029] The above solution also suffers from an unstable fixation between the rectangular card block 52 and the rectangular card slot 51, such as... Figure 2 and Figure 4 As shown, the inner wall of the base 1 has a first insertion hole 53, and the inner wall of the rectangular block 52 has a second insertion hole 54. A threaded rod 56 is inserted into the inner wall of the first insertion hole 53 and the second insertion hole 54. A fixing nut 57 is threaded to one end of the outer surface of the threaded rod 56. Under the action of the first insertion hole 53 and the second insertion hole 54, the threaded rod 56 and the fixing nut 57 can assist in fixing the rectangular block 52 and the rectangular slot 51, thereby making the fixation more stable.

[0030] Working principle:

[0031] like Figure 1-4 As shown:

[0032] In use: engage the rectangular card block 52 with the rectangular card slot 51, then insert the threaded rod 56 into the first insertion hole 53 and the second insertion hole 54, and then rotate the fixing nut 57 to fix the threaded rod 56.

[0033] At this time, the second motor 47 is started, so that the second screw 48 can drive the second screw hole block 49 to move, which in turn can drive the U-shaped clamping plate 410 to move. At this time, the third screw 411 is rotated, so that the third screw 411 can drive the clamping plate 412 to move, which can fix the fabric.

[0034] At this time, the first motor 42 is started, which drives the first screw 43 to rotate, thereby driving the first screw hole block 44 to move, which in turn drives the shift connecting round block 45 to move, and at the same time drives the second rectangular frame 46 and other components to move, thereby cooperating with the needle 3 and other structures to perform stitching.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A stitch alignment adjustment device for a coverstitch sewing machine, comprising a machine base (1), characterized in that, An organism (2) is fixedly installed on the top of the outer surface of the base (1), and a needle (3) is provided at the bottom of the organism (2). A limit alignment structure (4) is provided on one side of the base (1); An auxiliary disassembly and assembly structure (5) is provided between the base (1) and the limiting alignment structure (4). The limiting alignment structure (4) includes a first rectangular frame (41), a first motor (42) is fixedly installed on one side of the outer surface of the first rectangular frame (41), a first screw (43) is fixedly connected to the output end of the first motor (42), a first screw hole block (44) is threadedly connected to the outer surface of the first screw (43), and the outer surface of the first screw hole block (44) is slidably connected to the inner wall of the first rectangular frame (41).

2. The overlock sewing machine stitch alignment adjustment device according to claim 1, characterized in that: A connecting round block (45) is fixedly connected to one side of the outer surface of the first screw hole block (44), and a second rectangular frame (46) is fixedly connected to one side of the outer surface of the connecting round block (45).

3. The stitch alignment adjustment device for a cover-stitch machine according to claim 2, characterized in that: A second motor (47) is fixedly installed on one side of the outer surface of the second rectangular frame (46). The output end of the second motor (47) is fixedly connected to a second screw (48). The two ends of the second screw (48) have opposite thread directions. The outer surface of the second screw (48) is symmetrically threaded with two second screw hole blocks (49). The outer surface of the second screw hole blocks (49) is slidably connected to the inner wall of the second rectangular frame (46).

4. The stitch alignment adjustment device for a cover-stitch machine according to claim 3, characterized in that: A U-shaped clamp (410) is fixedly connected to one side of the outer surface of the second screw hole block (49). A third screw (411) is threadedly connected to the top inner wall of the U-shaped clamp (410). A clamping plate (412) is rotatably connected to the bottom end of the third screw (411).

5. The overlock sewing machine stitch alignment adjustment device according to claim 4, characterized in that: A limiting rod (413) is fixedly connected to the top of the outer surface of the clamping plate (412), and the limiting rod (413) is slidably disposed on the inner wall of the U-shaped clamping plate (410).

6. The stitch alignment adjustment device for a coverstitch machine according to claim 1, characterized in that: The auxiliary disassembly and assembly structure (5) includes a rectangular slot (51), which is opened on the inner wall of one side of the base (1). A rectangular block (52) is engaged with the inner wall of the rectangular slot (51). A first insertion hole (53) is opened on the inner wall of the base (1), and a second insertion hole (54) is opened on the inner wall of the rectangular block (52).

7. The overlock sewing machine stitch alignment adjustment device according to claim 6, characterized in that: A threaded rod (56) is inserted into the inner wall of the first insertion hole (53) and the second insertion hole (54). A fixing nut (57) is threaded to one end of the outer surface of the threaded rod (56). A rectangular connecting block (55) is fixedly connected to one side of the outer surface of the rectangular block (52). The top of the outer surface of the rectangular connecting block (55) is fixedly connected to the bottom of the outer surface of the first rectangular frame (41).

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