Quick replacement structure for flat seaming machine needle plate

Abstract

The utility model provides a quick replacement structure for a flat seaming machine needle plate, and relates to the technical field of needle plate replacement structures. Comprising a mounting plate and a needle plate body, and a mounting groove is formed in the inner wall of the mounting plate; a quick disassembly and assembly structure is arranged between the mounting plate and the needle plate body; an auxiliary protection structure is arranged on a part of the quick disassembly and assembly structure. The quick dismounting and mounting structure comprises an auxiliary clamping groove, the auxiliary clamping groove is formed in the top of the mounting plate, the inner wall of the auxiliary clamping groove is connected with the outer surface of the needle plate body in a clamped mode, and by arranging the quick dismounting and mounting structure, under the effect that the sliding clamping cylinder is matched with the auxiliary clamping groove, the sliding clamping cylinder can slide on the outer surface of the fixing rod by pressing the sliding clamping cylinder; the needle plate body can be clamped with or separated from the circular clamping groove in cooperation with components such as a reset spring, the needle plate body can be pulled upwards in cooperation with operation of the auxiliary plate, so that the rectangular clamping block is separated from the rectangular clamping groove, disassembly can be completed, and the needle plate body can be conveniently disassembled and replaced.

Description

Technical Field

[0001] This utility model relates to the field of needle plate replacement structure technology, and in particular to a quick needle plate replacement structure for a coverstitch sewing machine. Background Technology

[0002] A coverstitch machine is an industrial sewing machine that uses both needle and shuttle threads to form a single-sided chain stitch on the underside of the fabric to sew two or more layers of fabric together. The needle plate is one of the important components of the coverstitch machine. After prolonged use, it needs to be replaced. The needle plate and the coverstitch machine are often connected and disassembled by bolts.

[0003] In practical applications, the existing needle plate assembly and disassembly structures are relatively complete in structure and function, and can basically meet daily usage needs. However, the following problems still exist:

[0004] In actual use, the needle plate is disassembled and assembled with the mounting plate on the machine body using bolts. One of the disadvantages of bolt fixing is that it requires disassembly and assembly tools, which reduces the overall disassembly and assembly efficiency and makes it impossible to replace quickly. However, bolts are undeniably the most common and stable installation structure. But in some situations where needle plates need to be replaced quickly, such as in automated workshops and other production environments, when the demand for needle plate replacement is high, the replacement efficiency will affect the overall production efficiency. The existing disassembly and assembly methods require the use of external tools, which affects the replacement efficiency and is very inconvenient.

[0005] Therefore, this utility model provides a quick-change structure for the needle plate of a coverstitch sewing machine. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a quick-change structure for the needle plate of a coverstitch sewing machine.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a quick-change structure for a coverstitch sewing machine needle plate, comprising a mounting plate and a needle plate body, wherein the inner wall of the mounting plate is provided with a mounting groove; a quick-release structure is provided between the mounting plate and the needle plate body; an auxiliary protective structure is provided on a portion of the quick-release structure; the quick-release structure includes an auxiliary slot, the auxiliary slot being opened at the top of the mounting plate, the inner wall of the auxiliary slot engaging with the outer surface of the needle plate body, a rectangular slot being opened at the bottom of the auxiliary slot on the inner wall of the mounting plate, and a rectangular block being fixedly connected to the bottom of the outer surface of the needle plate body, the outer surface of the rectangular block being detachably engaging with the inner wall of the rectangular slot.

[0008] In a preferred embodiment, a circular groove is formed on one inner wall of the mounting plate, and a circular groove is formed on one inner wall of the needle plate body. A fixing rod is fixedly connected to the inner wall of the circular groove, and a sliding retainer is slidably connected to one end of the outer surface of the fixing rod. The sliding retainer engages with the inner wall of the circular groove. A return spring is sleeved on the outer surface of the fixing rod, and the two ends of the return spring are fixedly connected to the outer surface of the sliding retainer and the inner wall of the circular groove, respectively. An operating auxiliary plate is fixedly connected to one side of the outer surface of the needle plate body, and an anti-slip protrusion is fixedly connected to the top of the outer surface of the operating auxiliary plate.

[0009] The technical effect of adopting the above-mentioned further solution is that, under the action of the fixed rod and the sliding clamp, the sliding clamp can be moved to the inner wall of the circular groove with the help of the return spring, thereby assisting in fixing the mounting plate and the needle plate body. At the same time, during disassembly and assembly, it can be disassembled with the help of the operating auxiliary plate and the anti-slip protrusion, making disassembly simpler, without the need for special tools, and the overall disassembly is also convenient.

[0010] In a preferred embodiment, the auxiliary protective structure includes a circular card frame, one side of the outer surface of the circular card frame is fixedly connected to one side of the outer surface of the sliding card cylinder, a circular card block is engaged with the inner wall of the circular card frame, and an operating circular block is fixedly connected to one side of the outer surface of the circular card block.

[0011] The technical effect of adopting the above-mentioned further solution is that, under the action of the circular card frame and the circular card block, the operating circular block can be auxiliaryly fixed with the sliding card cylinder, thereby providing auxiliary limit for the sliding card cylinder, so that the sliding card cylinder will not easily separate from the circular card slot.

[0012] In a preferred embodiment, the inner wall of the circular card frame is provided with rectangular card slots, and the number of rectangular card slots is four. The four rectangular card slots are arranged equidistantly on the inner wall of the circular card frame. The outer surface of the circular card block is fixedly connected with four rectangular card blocks arranged equidistantly on the outer circumference of the circular card block. The rectangular card slots and rectangular card blocks can be detachably engaged.

[0013] The technical effect of adopting the above-mentioned further solution is that, under the action of the rectangular slot and the rectangular block, the circular frame and the circular block can be auxiliaryly limited, so that the circular block will not rotate or slide on the inner wall of the circular frame.

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

[0015] By setting up a quick-release structure, with the sliding retainer and auxiliary retainer groove working together, the sliding retainer can be pressed to slide on the outer surface of the fixed rod. Then, it can engage or disengage with the circular retainer groove in conjunction with components such as the return spring. Then, with the help of the operating auxiliary plate, the needle plate body can be pulled upward to separate the rectangular retainer block from the rectangular retainer groove, thus completing the disassembly. This facilitates the disassembly and replacement of the needle plate body. By setting up an auxiliary protective structure, the sliding retainer can be limited and protected to prevent it from accidentally disengaging from the circular retainer groove, which would cause the needle plate body to shake or separate, thus affecting its normal use. Attached Figure Description

[0016] Figure 1 A schematic diagram of a quick-change needle plate structure for a coverstitch machine provided by this utility model;

[0017] Figure 2 A schematic diagram of the mounting plate of a quick-change needle plate structure for a coverstitch machine provided by this utility model;

[0018] Figure 3 A schematic diagram of the needle plate body of a quick-change needle plate structure for a coverstitch machine provided by this utility model;

[0019] Figure 4 This utility model provides a quick-change structure for the needle plate of a coverstitch sewing machine. Figure 3 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Mounting plate; 2. Pin plate body; 3. Mounting slot;

[0022] 4. Quick-assembly and disassembly structure; 41. Auxiliary slot; 42. Rectangular slot; 43. Circular slot; 44. Rectangular block; 45. Circular groove; 46. Fixing rod; 47. Sliding cylinder; 48. Return spring; 49. Operating auxiliary plate; 410. Anti-slip protrusion;

[0023] 5. Auxiliary protective structure; 51. Circular card frame; 52. Circular card block; 53. Rectangular card slot; 54. Rectangular card block; 55. Operating circular block. 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 Figure 1-Figure 4 As shown, this embodiment provides a technical solution: a quick-change structure for a coverstitch sewing machine needle plate, including a mounting plate 1 and a needle plate body 2. The inner wall of the mounting plate 1 is provided with a mounting groove 3. A quick-release structure 4 is provided between the mounting plate 1 and the needle plate body 2. An auxiliary protective structure 5 is provided on a part of the quick-release structure 4. The quick-release structure 4 includes an auxiliary slot 41, which is opened at the top of the mounting plate 1. The inner wall of the auxiliary slot 41 is engaged with the outer surface of the needle plate body 2. A rectangular slot 42 is opened at the bottom of the auxiliary slot 41 on the inner wall of the mounting plate 1. A rectangular block 44 is fixedly connected to the bottom of the outer surface of the needle plate body 2. The outer surface of the rectangular block 44 is detachably engaged with the inner wall of the rectangular slot 42.

[0026] By setting up a quick disassembly and assembly structure 4, under the action of the sliding clamp 47 and the auxiliary clamping groove 41, the sliding clamp 47 can be pressed to slide on the outer surface of the fixed rod 46. Then, it can be engaged or disengaged with the circular clamping groove 43 in conjunction with the return spring 48 and other components. Then, in conjunction with the operating auxiliary plate 49, the needle plate body 2 can be pulled upward, so that the rectangular clamping block 44 is separated from the rectangular clamping groove 42, thus completing the disassembly. This makes it convenient to disassemble and replace the needle plate body 2. By setting up an auxiliary protection structure 5, the sliding clamp 47 can be assisted in limiting and protecting it, preventing the sliding clamp 47 from being accidentally disengaged from the circular clamping groove 43, which would cause the needle plate body 2 to shake or separate, thus affecting its normal use.

[0027] Going a step further, such as Figures 2-4 As shown: A circular groove 43 is formed on one inner wall of the mounting plate 1, and a circular groove 45 is formed on one inner wall of the needle plate body 2. A fixing rod 46 is fixedly connected to the inner wall of the circular groove 45. A sliding retainer 47 is slidably connected to one end of the outer surface of the fixing rod 46. The sliding retainer 47 engages with the inner wall of the circular groove 43. A return spring 48 is sleeved on the outer surface of the fixing rod 46. The two ends of the return spring 48 are fixedly connected to the outer surface of the sliding retainer 47 and the inner wall of the circular groove 45, respectively. One side of the outer surface of the needle plate body 2 is fixed... An operating auxiliary plate 49 is connected, and an anti-slip protrusion 410 is fixedly connected to the top of the outer surface of the operating auxiliary plate 49. Under the action of the fixed rod 46 and the sliding cylinder 47, the sliding cylinder 47 can move to the inner wall of the circular slot 43 in conjunction with the return spring 48, thereby assisting in fixing the mounting plate 1 and the needle plate body 2. At the same time, during disassembly and assembly, it can be disassembled in conjunction with the operating auxiliary plate 49 and the anti-slip protrusion 410, making disassembly simpler, without the need for special tools, and the overall disassembly is also convenient.

[0028] The above solution also has the problem that the sliding retainer 47 is easily separated from the circular retainer 43 due to accidental contact. Figure 4As shown: In this scheme, the auxiliary protective structure 5 includes a circular frame 51. One side of the outer surface of the circular frame 51 is fixedly connected to one side of the outer surface of the sliding cylinder 47. A circular block 52 is engaged with the inner wall of the circular frame 51. An operating circular block 55 is fixedly connected to one side of the outer surface of the circular block 52. Under the action of the circular frame 51 and the circular block 52, the operating circular block 55 can be auxiliaryly fixed with the sliding cylinder 47, thereby providing auxiliary limiting for the sliding cylinder 47, so that the sliding cylinder 47 will not easily separate from the circular slot 43.

[0029] The above solution also has the problem that the circular card block 52 is prone to rotation on the inner wall of the circular card frame 51, leading to separation. Figure 4 As shown, the inner wall of the circular card frame 51 is provided with rectangular card slots 53. There are four rectangular card slots 53, which are arranged equidistantly on the inner wall of the circular card frame 51. The outer surface of the circular card block 52 is fixedly connected with four rectangular card blocks 54 arranged equidistantly on the outer wall of the circular card block 52. The rectangular card slots 53 and the rectangular card blocks 54 can be detachably engaged. Under the action of the rectangular card slots 53 and the rectangular card blocks 54, the circular card frame 51 and the circular card block 52 can be auxiliaryly limited, so that the circular card block 52 will not rotate or slide on the inner wall of the circular card frame 51.

[0030] Working principle:

[0031] like Figure 1-4 As shown:

[0032] When in use: First press the sliding cylinder 47 so that the sliding cylinder 47 can slide on the outer surface of the fixed rod 46, thereby causing the return spring 48 to deform. At this time, hold the operating auxiliary plate 49 with the other hand so that the rectangular block 44 on the needle plate 2 can be inserted into the inner wall of the rectangular slot 42.

[0033] At this time, the sliding cylinder 47 can be aligned with the circular slot 43, and then under the action of the return spring 48, the sliding cylinder 47 is inserted into the inner wall of the circular slot 43.

[0034] At this time, the circular card block 52 is inserted into the inner wall of the circular card frame 51, and the rectangular card block 54 can be inserted into the inner wall of the rectangular card slot 53, thereby providing auxiliary protection and limiting for the sliding card cylinder 47 and preventing it from easily separating from the circular card slot 43.

[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 quick-change structure for a coverstitch sewing machine needle plate, comprising a mounting plate (1) and a needle plate body (2), characterized in that, The inner wall of the mounting plate (1) is provided with a mounting groove (3); A quick-release structure (4) is provided between the mounting plate (1) and the pin plate body (2); The quick-assembly structure (4) has an auxiliary protective structure (5) on part of its structure. The quick-release structure (4) includes an auxiliary slot (41), which is located on the top of the mounting plate (1). The inner wall of the auxiliary slot (41) is engaged with the outer surface of the needle plate body (2). The inner wall of the mounting plate (1) is provided with a rectangular slot (42) at the bottom of the auxiliary slot (41). A rectangular block (44) is fixedly connected to the bottom of the outer surface of the needle plate body (2). The outer surface of the rectangular block (44) is detachably engaged with the inner wall of the rectangular slot (42).

2. The quick-change structure for the needle plate of the overlock sewing machine according to claim 1, characterized in that: A circular slot (43) is provided on one side of the inner wall of the mounting plate (1), and a circular groove (45) is provided on one side of the inner wall of the needle plate body (2).

3. The quick-change structure for the needle plate of the overlock sewing machine according to claim 2, characterized in that: A fixing rod (46) is fixedly connected to the inner wall of the circular groove (45), and a sliding clamp (47) is slidably connected to one end of the outer surface of the fixing rod (46). The sliding clamp (47) engages with the inner wall of the circular groove (43).

4. The quick-change structure for the needle plate of the overlock sewing machine according to claim 3, characterized in that: A reset spring (48) is sleeved on the outer surface of the fixed rod (46), and the two ends of the reset spring (48) are fixedly connected to the outer surface of the sliding cylinder (47) and the inner wall of the circular groove (45), respectively.

5. The quick-change structure for the needle plate of a coverstitch sewing machine according to claim 1, characterized in that: An operating auxiliary plate (49) is fixedly connected to one side of the outer surface of the needle plate body (2), and an anti-slip protrusion (410) is fixedly connected to the top of the outer surface of the operating auxiliary plate (49).

6. The quick-change structure for the needle plate of a coverstitch machine according to claim 3, characterized in that: The auxiliary protective structure (5) includes a circular card frame (51), one side of the outer surface of the circular card frame (51) is fixedly connected to one side of the outer surface of the sliding card cylinder (47), a circular card block (52) is attached to the inner wall of the circular card frame (51), and an operating circular block (55) is fixedly connected to one side of the outer surface of the circular card block (52).

7. The quick-change structure for the needle plate of a coverstitch machine according to claim 6, characterized in that: The inner wall of the circular card frame (51) is provided with rectangular card slots (53). There are four rectangular card slots (53). The four rectangular card slots (53) are arranged equidistantly on the inner wall of the circular card frame (51). The outer surface of the circular card block (52) is fixedly connected with four rectangular card blocks (54) arranged equidistantly on the outer wall of the circular card block (52). The rectangular card slots (53) and the rectangular card blocks (54) can be detachably engaged.

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