Bottom thread quick-changing device suitable for multicolor double-sided embroidery process

By designing a quick-change device for the bobbin thread with a protective sleeve and a sliding groove, the problem of manually finding the thread end in multi-color double-sided embroidery is solved, enabling rapid bobbin replacement and color changing, improving operational efficiency and reducing the risk of eye strain.

CN223983828UActive Publication Date: 2026-03-10HANGZHOU JINGWEI SEWING MACHINERY MANUFACTURING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-29
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

In multi-color double-sided embroidery, operators need to manually find the thread end on the bobbin and thread it through the embroidery needle, which results in long operation time, eye and hand fatigue, and affects work efficiency and occupational health.

Method used

A quick-change bobbin device including a protective sleeve and a slide groove was designed. The protective sleeve avoids thread threading operations, and the color matching and slide groove design enable quick bobbin replacement and color change, simplifying the operation process.

Benefits of technology

It reduces the time spent searching for loose threads, lowers the risk of eye strain, and improves work efficiency. It is especially suitable for long-term work scenarios and reduces occupational health risks.

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Abstract

The utility model discloses a bottom thread quick-changing device suitable for a multicolor double-sided embroidery process, and relates to the technical field of embroidery. The bottom thread quick-changing device suitable for the multi-color double-sided embroidery process comprises an embroidery table, and an embroidery piece is movably mounted on the embroidery table; the quick-change assembly is mounted on the embroidery table, a plurality of bottom thread shuttle pegs are movably mounted in the quick-change assembly, and the quick-change assembly is used for replacing the used bottom thread shuttle pegs; one end of the bottom thread is wound on the bottom thread shuttle peg, the other end of the bottom thread is wound on the embroidery needle, and a protective sleeve is movably mounted on the embroidery needle; the first sliding groove is formed in the quick-change assembly, the other end of the bottom line penetrates through the first sliding groove and slides in the first sliding groove, and the diameter of the protective sleeve is larger than that of the first sliding groove; through the design of the protective sleeve and the first sliding groove, the operation that a bottom thread end needs to be manually found and penetrates into an embroidery needle after a shuttle peg is replaced in a traditional process is avoided, and the requirement for the vision of an operator is lowered.
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Description

TECHNICAL FIELD

[0001] The utility model relates to embroidery technical field, concretely is a bottom thread quick change device suitable for multicolor double-sided embroidery technology. BACKGROUND

[0002] In the embroidery field, multicolor double-sided embroidery is widely applied to the industries such as clothing, home decoration, handicrafts and the like with its unique artistic effect of rich color, exquisite pattern and same or symmetrical pattern on the front and back.

[0003] The utility model discloses a sewing machine bottom thread automatic replacement device discloses a sewing machine bottom thread automatic replacement device, including the shuttle core feeding mechanism that is arranged to shuttle core and convey shuttle core to the auxiliary feeding device, the auxiliary feeding device that moves the shuttle core feeding mechanism conveying shuttle core, provides the shuttle core for the auxiliary feeding device and is conveyed to the shuttle core claw structure that is used for grabbing and feeding, the execution drive device that is used for the position movement of shuttle core claw structure to realize the shuttle core feeding, this kind of sewing machine bottom thread automatic replacement device can automatically replace shuttle core for sewing machine bottom thread after using up, replenish the bottom thread, to guarantee the continuous operation of sewing work, because can automatically change shuttle, realize the quick automatic replacement of sewing machine bottom thread, and the large storage of shuttle core bin makes the high continuity of sewing equipment operation, high efficiency.

[0004] As shown in the above technical scheme, the device realizes the automatic replacement and large capacity storage of the bottom thread shuttle core, and improves the continuous operation ability of the sewing equipment, but when the bottom thread is used up, the operator still needs to manually find the thread end of the bottom thread on the shuttle core, and then pass it through the embroidery needle, the whole process not only takes a long time, but also needs high concentration and fine operation ability, and frequent operation easily leads to visual fatigue and hand fatigue of the operator. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a bottom thread quick change device suitable for multicolor double-sided embroidery technology, which solves the problem that the operator still needs to manually find the thread end of the bottom thread on the shuttle core and then pass it through the embroidery needle.

[0006] To achieve the above purpose, the utility model is implemented by the following technical scheme: a bottom thread quick change device suitable for multicolor double-sided embroidery technology, comprising:

[0007] An embroidery table is movably installed with an embroidery part on the embroidery table;

[0008] A quick change assembly is installed on the embroidery table, a plurality of bottom thread shuttles are movably installed in the quick change assembly, and the quick change assembly is used to replace the used bottom thread shuttles;

[0009] The bottom thread is wound on the bottom thread bobbin at one end, and the other end is wound on the embroidery needle, and the protective sleeve is movably installed on the embroidery needle;

[0010] The first sliding groove is provided on the quick-change assembly, and the other end of the bottom thread passes through and slides in the first sliding groove, and the diameter of the protective sleeve is greater than the diameter of the first sliding groove.

[0011] Preferably, the quick-change assembly comprises an embroidery bin and a bobbin bin, the embroidery bin and the bobbin bin are communicated, the embroidery bin is arranged at the left end of the bobbin bin, the first sliding groove is provided on the embroidery bin and the bobbin bin, the right end of the bobbin bin is provided with a rotating shaft bin, the bobbin bin and the rotating shaft bin are communicated, the top of the embroidery table is provided with a mounting frame, the embroidery bin and the rotating shaft bin are fixedly installed on the mounting frame, a rotating shaft is slidably installed on the mounting frame, a push block is fixedly installed on the rotating shaft, and the push block slides in the rotating shaft bin.

[0012] Preferably, the embroidery bin is composed of a lower bin body and an upper bin body, one end of the lower bin body is fixedly connected with the mounting frame, the other end is fixedly connected with the bobbin bin, and the upper bin body is rotatably installed on the lower bin body by means of a hinge.

[0013] Preferably, the front end of the rotating shaft bin is fixedly provided with a mounting block, and the top of the mounting block is fixedly provided with a flexible placing piece convenient for placing the embroidery needle.

[0014] Preferably, the top of the embroidery table is provided with a plurality of second sliding grooves, and a plurality of quick-change assemblies are slidably installed in the second sliding grooves.

[0015] Preferably, the color of the protective sleeve and the flexible placing piece is the same as that of the bottom thread placed in the quick-change assembly.

[0016] Preferably, the top of the embroidery table is provided with a placing groove, and the bottom of the embroidery table is movably provided with a placing cylinder, and the placing cylinder is installed in the placing groove.

[0017] Beneficial effects

[0018] The utility model provides a bottom thread quick-change device suitable for multicolor double-sided embroidery process.

[0019] 1、The bottom thread quick-change device suitable for multicolor double-sided embroidery process avoids the operation of manually searching for the bottom thread end and threading the embroidery needle after replacing the bobbin in the traditional process, reduces the requirement for the operator's vision, is especially suitable for long-time operation scenes, reduces the occupational health risk, and improves the work efficiency of the operator.

[0020] 2. This quick-change device for bottom thread, applicable to multi-color double-sided embroidery, allows for intuitive color matching. When it is necessary to change the embroidery color, the operator can quickly locate the target quick-change component and the corresponding embroidery needle by color, reducing search time and improving the operator's work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the quick-change component in this utility model;

[0023] Figure 3 This is a cross-sectional schematic diagram of the quick-change component in this utility model;

[0024] Figure 4 This is a schematic diagram of the bobbin core structure in this utility model.

[0025] In the diagram: 1. Embroidery table; 2. Embroidery piece; 3. Quick change assembly; 31. Embroidery compartment; 311. Lower compartment; 312. Upper compartment; 32. Bobbin compartment; 33. Spindle compartment; 34. Mounting frame; 35. Spindle; 36. Push block; 4. Bottom thread bobbin; 5. Bottom thread; 6. Embroidery needle; 7. Protective sleeve; 8. First slide; 9. Mounting block; 10. Flexible placement piece; 11. Second slide; 12. Placement slot; 13. Placement tube. Detailed Implementation

[0026] 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.

[0027] See Figures 1-4 This utility model provides the following two technical solutions:

[0028] First implementation: A quick-change device for bottom thread suitable for multi-color double-sided embroidery, comprising:

[0029] Embroidery table 1, on which embroidery piece 2 is movably installed;

[0030] Quick-change assembly 3 is installed on embroidery table 1. Quick-change assembly 3 includes an embroidery chamber 31 and a bobbin chamber 32, which are connected. The embroidery chamber 31 consists of a lower chamber body 311 and an upper chamber body 312. One end of the lower chamber body 311 is fixedly connected to the mounting frame 34, and the other end is fixedly connected to the bobbin chamber 32. The upper chamber body 312 is rotatably mounted on the lower chamber body 311 via a hinge. The embroidery chamber 31 is located at the left end of the bobbin chamber 32. A first sliding groove 8 is formed in the embroidery chamber. On the bobbin compartment 31 and the bobbin compartment 32, a pivot compartment 33 is provided at the right end of the bobbin compartment 32. The bobbin compartment 32 and the pivot compartment 33 are connected. A mounting frame 34 is installed on the top of the embroidery table 1. The embroidery compartment 31 and the pivot compartment 33 are both fixedly installed on the mounting frame 34. A pivot 35 is slidably installed on the mounting frame 34. A push block 36 is fixedly installed on the pivot 35. The push block 36 slides in the pivot compartment 33. Multiple bobbin threads 4 are movably installed in the quick-change assembly 3. The quick-change assembly 3 is used to replace the used bobbin threads 4.

[0031] Bottom line 5, one end of bottom line 5 is wrapped around bottom line bobbin 4, and the other end of bottom line 5 is wrapped around embroidery needle 6. A protective sleeve 7 is movably installed on embroidery needle 6.

[0032] The first slide 8 is formed on the quick-change assembly 3. The other end of the bottom line 5 passes through the first slide 8 and slides at the first slide 8. The diameter of the protective sleeve 7 is larger than the diameter of the first slide 8.

[0033] When the bobbin thread 5 of the bobbin thread core 4 is used up during the embroidery process, the operator can slide the rotating shaft 35 on the mounting bracket 34 outwards, causing the rotating shaft 35 and push block 36 to slide within the rotating shaft chamber 33. During the sliding process, the rotating shaft 35 will release the used bobbin thread core 4 from the embroidery chamber 31. At the same time, rotating the upper chamber 312 will remove the bobbin thread core 4 from the embroidery chamber 31. Then, sliding the rotating shaft 35 inwards will push the bobbin thread core 4 from the bobbin thread chamber 32 into the embroidery chamber 31, completing the operation of replacing the bobbin thread core 4. One end of the bobbin thread 5 is wrapped around the bobbin thread core 4, and the other end passes through the first groove 8 on the embroidery chamber 31 and the bobbin core chamber 32, and is wrapped around the embroidery needle 6. This design eliminates the need for the operator to search for the end of the bobbin thread 5 on the bobbin thread core 4 and then thread it into the embroidery needle 6, reducing operation time, improving work efficiency, and protecting the operator's eyesight to a certain extent. The protective sleeve 7 can prevent the needle tip of the embroidery needle 6 from pricking the operator, and can also prevent the bobbin thread 5 and the embroidery needle 6 from falling into the quick-change assembly 3 through the first groove 8.

[0034] In this embodiment, the design of the protective sleeve 7 and the first slide groove 8 avoids the traditional process of manually finding the thread end of the bobbin 5 and threading it into the embroidery needle 6 after changing the bobbin, reducing the visual requirements of the operator, making it especially suitable for long-term work scenarios and reducing occupational health risks.

[0035] The second embodiment differs from the first embodiment in that: a mounting block 9 is fixedly installed at the front end of the rotating shaft compartment 33, and a flexible placement piece 10 is fixedly installed on the top of the mounting block 9 to facilitate the placement of the embroidery needle 6.

[0036] The top of the embroidery table 1 is provided with multiple second slides 11, and quick-change components 3 are slidably installed in each of the multiple second slides 11.

[0037] The protective sleeve 7 and the flexible placement piece 10 are the same color as the bottom line 5 where the quick-change assembly 3 is placed.

[0038] The top of the embroidery table 1 is provided with a placement groove 12, and the bottom of the embroidery table 1 is movably installed with a placement tube 13, which is installed in the placement groove 12.

[0039] The flexible placement component 10 is the same color as the corresponding bottom line 5, forming a visual guidance system. When it is necessary to change the embroidery color, the operator can quickly locate the target quick-change component 3 and the corresponding embroidery needle 6 by color. Multiple quick-change components 3 slide on the embroidery table 1 through the second slide groove 11 to form a movable color thread library. Each component independently stores different color bottom lines 5, and quick color change is achieved by sliding and switching.

[0040] In this embodiment, traditional embroidery requires checking each needle to find a matching color. This design uses intuitive color matching. When it is necessary to change the embroidery color, the operator can quickly locate the target quick-change component 3 and the corresponding embroidery needle 6 by color, which reduces the search time and improves the operator's work efficiency.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] In use, when the bobbin thread 5 of the bobbin thread core 4 is used up during the embroidery process, the operator can slide the rotating shaft 35 on the mounting bracket 34 outward to drive the rotating shaft 35 and the push block 36 to slide in the rotating shaft chamber 33. During the sliding process, the rotating shaft 35 will release the used bobbin thread core 4 in the embroidery chamber 31. At the same time, rotating the upper chamber body 312 will remove the bobbin thread core 4 in the embroidery chamber 31. Then, sliding the rotating shaft 35 inward will push the bobbin thread core 4 in the bobbin thread chamber 32 into the embroidery chamber 31, completing the operation of changing the bobbin thread core 4. When it is necessary to change to a different color of bobbin thread core 5, the embroidery needle 6 is inserted into the flexible placement piece 10, and then the quick change component 3 is slid through the second slide groove 11 to achieve a quick color change.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bottom thread quick change device suitable for use in a multi-color double-sided embroidery process, characterized in that, Include: Embroidery table, the embroidery table is movably installed with embroidery parts; Quick change assembly, the quick change assembly is installed on the embroidery table, a plurality of bottom thread bobbins are movably installed in the quick change assembly, and the quick change assembly is used for replacing the used bottom thread bobbins; Bottom line, one end of the bottom line is wound on the bottom thread bobbin, the other end of the bottom line is wound on the embroidery needle, and a protective sleeve is movably installed on the embroidery needle; First sliding groove, the first sliding groove is formed in the quick change assembly, the other end of the bottom line passes through the first sliding groove and slides at the first sliding groove, and the diameter of the protective sleeve is greater than the diameter of the first sliding groove.

2. A thread changing device suitable for multi-color double-sided embroidery process according to claim 1, characterized in that: The quick change assembly includes an embroidery bin and a bobbin bin, the embroidery bin and the bobbin bin are communicated, the embroidery bin is arranged at the left end of the bobbin bin, the first sliding groove is formed in the embroidery bin and the bobbin bin, the right end of the bobbin bin is provided with a rotating shaft bin, the bobbin bin and the rotating shaft bin are communicated, the top of the embroidery table is provided with a mounting frame, the embroidery bin and the rotating shaft bin are fixedly installed on the mounting frame, a rotating shaft is slidably installed on the mounting frame, a push block is fixedly installed on the rotating shaft, and the push block slides in the rotating shaft bin.

3. A thread changing device suitable for multi-color double-sided embroidery process according to claim 2, characterized in that: The embroidery bin is composed of a lower bin body and an upper bin body, one end of the lower bin body is fixedly connected with the mounting frame, the other end is fixedly connected with the bobbin bin, and the upper bin body is rotatably installed on the lower bin body by means of hinge.

4. A thread changing device suitable for multi-color double-sided embroidery process according to claim 3, characterized in that: The front end of the rotating shaft bin is fixedly installed with a mounting block, the top of the mounting block is fixedly installed with a flexible placing part convenient for placing the embroidery needle.

5. A thread changing device suitable for multi-color double-sided embroidery process according to claim 4, characterized in that: The top of the embroidery table is provided with a plurality of second sliding grooves, and a plurality of quick change assemblies are slidably installed in the second sliding grooves.

6. A thread changing device suitable for multi-color double-sided embroidery process according to claim 5, characterized in that: The color of the protective sleeve and the flexible placing part is same as the color of the bottom line placed in the quick change assembly.

7. A thread changing device suitable for multi-color double-sided embroidery process according to claim 6, characterized in that: The top of the embroidery table is provided with a placing groove, and the bottom of the embroidery table is movably installed with a placing cylinder, and the placing cylinder is installed at the placing groove.

Citation Information

Patent Citations

  • Automatic replacement device for bottom yarn of sewing machine

    CN203513993U