Four-thread overlock machine for school uniform production

Abstract

The utility model discloses a four-thread overedger for school uniform production, and relates to the technical field of garment production equipment, the four-thread overedger comprises an overedger body and an insertion cylinder assembly arranged on the back of the overedger body, the insertion cylinder assembly comprises a fixing plate, an L-shaped bottom plate and four thread insertion columns, and the four thread insertion columns are distributed on the surface of the L-shaped bottom plate along an L-shaped path; the two sides of the fixing plate are connected with the L-shaped bottom plate through connecting plates. A fixing table is arranged on the wire inserting column and is used for being clamped with a wire barrel in a self-adaptive manner; according to the utility model, the structure is optimized by arranging the insertion cylinder assembly, the installation efficiency is improved, the layout of the wire insertion columns is optimized by designing the L-shaped bottom plate, the distance between the wire insertion columns is relatively increased, and the fault probability of wire jumping and wire clamping is reduced; and the fixing table is arranged to fix the bobbin, so that the risks of wire jumping and wire breaking are reduced.

Description

Technical Field

[0001] This utility model relates to the field of garment production equipment technology, and more specifically to a four-thread overlock sewing machine for school uniform production. Background Technology

[0002] Four-thread overlock sewing machines have a wide range of applications and can sew garments of various materials, such as school uniforms and work clothes. The thread spool insert post is a component of the four-thread overlock sewing machine. The existing thread spool insert post has a complex structure, which is not conducive to installation. In addition, the thread spool insert post cannot fix the thread spool, which may cause the spool to shake when the thread is low, resulting in unstable thread tension and increasing the risk of skipped stitches and thread breakage.

[0003] For example, Chinese patent (authorization announcement number CN222205663U) discloses a four-thread overlock sewing machine for edge binding, wherein the placement component 3 includes an installation part 31 and a placement part 32; the installation part 31 includes a base plate 311, a stop 312 is movably installed inside the base plate 311, a pin 313 is movably installed inside the stop 312, and a groove 314 is formed inside the base plate 311. The base plate 311 is fixedly installed on the back of the machine body 2, and the stop 312 and the groove 314 are connected. The two parts are compatible, with the bottom end of the pin 313 passing through the stop block 312 and the base plate 311 in sequence, and the bottom end of the pin 313 extending into the interior of the base plate 311. The stop block 312 and the base plate 311 are fixedly installed by the pin 313; the stop block 312 and the base plate 311 are fixedly installed by the pin 313, so that the stop block 312 blocks the slide groove 314, and the slide seat 321 inside the slide groove 314 can no longer slide out; the placement part 32 includes a slide seat 321, and the top of the slide seat 321 is... A fastening screw 322 is threadedly fixed to the top of the slide 321. A disc 323 is provided on the top of the disc 323, and a top plate 324 is threadedly fixed to the top of the disc 323. A terminal block 325 is fixedly fixed to the top of the top plate 324. The slide 321 is movably installed inside the slide groove 314, and the slide 321 and the slide groove 314 are compatible. The bottom end of the fastening screw 322 passes through the disc 323 and the slide 321 in sequence, and the bottom end of the fastening screw 322 extends into the interior of the slide 321. The top plate 324 is threadedly fixed to the slide block 321 by the fastening screw 322, and the bottom end of the top plate 324 contacts the top of the fastening screw 322. The slide block 321 is placed inside the slide groove 314. After adjusting the position of the slide block 321, the disc 323 is placed on top of the slide block 321 and fixed between the two by the fastening screw 322. Then the top plate 324 and the disc 323 are threadedly installed, the position of the plug post 325 is fixed, and then the wire spool is inserted into the plug post 325.

[0004] In the aforementioned patent, the placement component 2 is used to place the spool, but it has the following problems: the structure is too complex, with many parts, which is not conducive to installation; the distance between the insertion posts is too small, and the small spacing can easily cause the threads of different spools to become tangled, increasing the probability of skipped stitches and thread jams; in addition, the insertion posts cannot fix the spool, which may cause the spool to shake when the remaining thread is small, resulting in unstable thread tension and increasing the risk of skipped stitches and thread breakage. Therefore, it is necessary to improve the structure. Utility Model Content

[0005] The purpose of this utility model is to provide a four-thread overlock sewing machine for school uniform production in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A four-thread overlock sewing machine for school uniform production includes an overlock sewing machine body and an insert assembly located on the back of the overlock sewing machine body. The insert assembly includes a fixed plate, an L-shaped base plate, and thread insertion posts. Four thread insertion posts are distributed along an L-shaped path on the surface of the L-shaped base plate. The fixed plate is connected to the L-shaped base plate on both sides through connecting plates.

[0008] The plug post is equipped with a fixing platform, which is used to self-adaptively lock the cable reel in place.

[0009] The bottom end of the insertion post is welded to the L-shaped base plate. The process is simple, the connection is firm, and the installation efficiency is improved.

[0010] The fixing plate, L-shaped base plate, and connecting plate are integrally formed. The fixing plate, L-shaped base plate, and connecting plate are integrally formed by casting using a mold, achieving modular standardized production.

[0011] The fixing platform is made of polyurethane elastomer with a Shore hardness of 70°. Existing fixing platforms are made of plastic, which is prone to deformation and has a short service life. Polyurethane elastomer, on the other hand, possesses excellent wear resistance, oil resistance, and aging resistance. Its Shore hardness of 70° ensures both elasticity and strength. During frequent clamping and disengaging operations with the bobbin, it resists wear and deformation, maintaining its shape and performance stability, reducing the probability of damage to the fixing platform due to long-term use, and improving the overall service life of the bobbin assembly, thereby ensuring the continuity of school uniform production.

[0012] A connecting sleeve is provided at the center of the fixing platform, and the inner wall of the connecting sleeve has internal threads. The lower end of the plug has external threads. The connecting sleeve and the plug are connected and fixed by the internal and external threads. The threaded connection between the fixing platform and the plug facilitates installation and replacement, avoids the need to replace the whole unit when a single part is damaged, and reduces maintenance costs.

[0013] The back of the overlock sewing machine body is provided with a dovetail groove, and the cross-section of the fixing plate is a dovetail structure that fits into the dovetail groove. By setting the dovetail groove, the insertion tube assembly is prevented from tipping over when the fixing plate is inserted into the dovetail groove, ensuring a firm and stable connection.

[0014] The fixing plate has two symmetrical oblong holes. Bolts are used to connect the fixing plate to the overlock sewing machine body through these holes, thus securing the fixing plate to the machine body. The oblong holes facilitate fine-tuning of the fixing plate's position. Positioning the oblong holes at the bottom of the connecting plate avoids obstruction by the connecting plate and facilitates bolt installation.

[0015] The beneficial effects of this utility model are as follows:

[0016] The structure is optimized by setting up the socket assembly, which improves installation efficiency. The L-shaped base plate optimizes the layout of the plug posts and increases the spacing between them, reducing the probability of jumper and wire jamming failures. The fixing platform is set up to fix the socket, reducing the risk of jumper and wire breakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural diagram of the insert assembly;

[0019] Figure 3 yes Figure 1 A right-side partial view of the body of the overlock sewing machine in conjunction with the fixed plate;

[0020] Figure 4 This is a schematic diagram of a structure with a connecting sleeve at the center of the fixed platform and external threads at the lower end of the insertion post.

[0021] Reference numerals: 1. Overlock sewing machine body; 2. Insert tube assembly; 3. Fixing plate; 4. L-shaped base plate; 5. Insert post; 6. Connecting plate; 7. Fixing platform; 8. Connecting sleeve; 9. External thread; 10. Dovetail groove; 11. Waist-shaped hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] like Figures 1 to 4 As shown, this embodiment provides a four-thread overlock sewing machine for school uniform production, including an overlock sewing machine body 1 and an insert assembly 2 disposed on the back of the overlock sewing machine body 1. The insert assembly 2 includes a fixing plate 3, an L-shaped base plate 4 and thread insertion posts 5. The four thread insertion posts 5 are distributed along the L-shaped path on the surface of the L-shaped base plate 4. The two sides of the fixing plate 3 are connected to the L-shaped base plate 4 through connecting plates 6.

[0026] The insertion post 5 is equipped with a fixing platform 7, which is used to self-adaptively lock the wire drum.

[0027] The bottom end of the insertion post 5 is welded to the L-shaped base plate 4. The process is simple, the connection is firm, and the installation efficiency is improved.

[0028] The fixing plate 3, the L-shaped base plate 4, and the connecting plate 6 are integrally formed. The fixing plate 3, the L-shaped base plate 4, and the connecting plate 6 are integrally formed by casting with a mold, realizing modular standard production.

[0029] The fixing platform 7 is a polyurethane elastomer with a Shore hardness of 70°. In the prior art, the fixing platform 7 is made of plastic, which is easily deformed and has a short service life. Polyurethane elastomer, on the other hand, has excellent wear resistance, oil resistance, and aging resistance. Its Shore hardness of 70° ensures both elasticity and a certain degree of strength. During frequent clamping and disengaging operations with the bobbin, it can resist wear and deformation, maintaining its shape and performance stability, reducing the probability of damage to the fixing platform 7 due to long-term use, and improving the overall service life of the insert assembly 2, thereby ensuring the continuity of school uniform production.

[0030] A connecting sleeve 8 is provided at the center of the fixing platform 7. The inner wall of the connecting sleeve 8 is provided with internal threads, and the lower end of the plug post 5 is provided with external threads 9. The connecting sleeve 8 and the plug post 5 are connected and fixed by the internal threads and external threads 9. The threaded connection between the fixing platform 7 and the plug post 5 facilitates installation and replacement, avoids the need to replace the whole unit when a single part is damaged, and reduces maintenance costs.

[0031] The back of the overlock sewing machine body 1 is provided with a dovetail groove 10, and the cross-section of the fixing plate 3 is a dovetail structure, which is inserted into the dovetail groove 10. By setting the dovetail groove 10, the insertion tube assembly 2 is prevented from tipping over when the fixing plate 3 is inserted into the dovetail groove 10, and the connection is firm and stable.

[0032] The fixing plate 3 has two symmetrical oblong holes 11. Bolts are used to connect the fixing plate 3 to the overlock sewing machine body 1 through the oblong holes 11, thus fixing the fixing plate 3 to the overlock sewing machine body 1. The oblong holes 11 facilitate fine-tuning of the position of the fixing plate 3. The oblong holes 11 are located at the lower part of the connecting plate 6 to avoid being obstructed by the connecting plate 6, which facilitates bolt installation.

Claims

1. A four-thread overlock sewing machine for school uniform production, comprising a sewing machine body and an insert assembly disposed on the back of the sewing machine body, characterized in that: The socket assembly includes a fixing plate, an L-shaped base plate, and four plug posts. The four plug posts are distributed along the L-shaped path on the surface of the L-shaped base plate. The fixing plate is connected to the L-shaped base plate on both sides through connecting plates. The plug post is equipped with a fixing platform, which is used to self-adaptively lock the plug onto the reel.

2. The four-thread overlock sewing machine for school uniform production according to claim 1, characterized in that, The bottom end of the insertion post is welded to the L-shaped base plate.

3. The four-thread overlock sewing machine for school uniform production according to claim 1, characterized in that, The fixing plate, L-shaped base plate and connecting plate are integrally formed.

4. The four-thread overlock sewing machine for school uniform production according to claim 1, characterized in that, The fixed platform is a polyurethane elastomer with a Shore hardness of 70°.

5. The four-thread overlock sewing machine for school uniform production according to claim 1, characterized in that, The fixed platform is provided with a connecting sleeve at its center. The inner wall of the connecting sleeve is provided with an internal thread, and the lower end of the plug is provided with an external thread. The connecting sleeve and the plug are connected and fixed by the internal thread and the external thread.

6. The four-thread overlock sewing machine for school uniform production according to claim 1, characterized in that, The back of the overlock sewing machine body is provided with a dovetail groove, and the cross-section of the fixing plate is a dovetail structure that is inserted into the dovetail groove.

7. The four-thread overlock sewing machine for school uniform production according to claim 1, characterized in that, The fixing plate has two symmetrical waist-shaped holes. Bolts are used to connect the fixing plate to the overlock machine body through the waist-shaped holes, thus fixing the fixing plate to the overlock machine body.

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