Underwear sewing equipment
By using a flip-up presser frame and swing arm structure, along with a motor bevel gear system, the problems of presser feet obstructing blind spots and inconvenient component disassembly and assembly in underwear sewing equipment have been solved, enabling flexible sewing and convenient installation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG BOLUN BOLE CLOTHING CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-05-19
AI Technical Summary
The presser foot of existing underwear sewing equipment cannot avoid complex patterns, which makes sewing difficult. Furthermore, the connection and disassembly of the sewing components to the worktable are inconvenient and prone to stripping.
It adopts a flip-up press frame and swing arm structure, combined with a rotary cylinder drive, to achieve flexible changes in the shading area of the press frame; and achieves quick installation and removal of sewing components through a motor and bevel gear system.
It enables flexible sewing of complex patterns, avoids obscuring blind spots, simplifies the installation and disassembly of sewing components, and improves operational efficiency.
Smart Images

Figure CN224258943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underwear processing technology, and in particular to an underwear sewing device. Background Technology
[0002] Underwear is a type of clothing worn close to the body, including vests, undershirts, shorts, bras, socks, etc. Underwear serves functions such as absorbing sweat, shaping, supporting the body, and keeping warm. The processing of underwear includes sewing, thus involving underwear sewing equipment.
[0003] For example, Chinese utility model patent CN221760138U discloses an underwear sewing device. This device uses a storage structure with two sets of connecting blocks symmetrically fixed on both sides of the storage basket. Through a sliding structure between the limiting blocks and the connecting blocks, the corresponding limiting blocks slide within the limiting blocks, thus positioning the storage basket at the bottom of the worktable. After the underwear is sewn at the top of the worktable, it is collected and processed uniformly, saving time and effort. However, this structure still has the following significant drawbacks:
[0004] 1. In the existing technology, the presser foot on the sewing equipment is fixed, and the needle cannot avoid the presser foot when sewing. Therefore, it cannot sew patterns with complex or special requirements.
[0005] 2. Most sewing equipment currently on the market consists of sewing components and a worktable. The connection between the sewing components and the worktable is fixed by screws. This makes disassembly and assembly inconvenient, and frequent disassembly and assembly of the screws can also lead to stripping of the threads. Summary of the Invention
[0006] This utility model aims to solve one of the technical problems existing in the prior art.
[0007] This application provides an underwear sewing device, including a worktable and a sewing assembly; it also includes a pressing frame and a swing arm. The worktable is provided with a mounting frame, and the mounting frame is provided with a pressing frame lifting assembly. A mounting block is fixedly provided on the pressing frame lifting assembly, and a driving component is fixedly installed on the mounting block. One end of the swing arm is hinged to the pressing frame, and the other end is fixedly connected to the output end of the driving component. The driving component can drive the swing arm to rotate, changing the covering area of the swing arm.
[0008] Furthermore, the frame pressing and lifting assembly includes a frame pressing cylinder and a frame pressing block. A side plate is fixed on the side of the mounting frame away from the sewing assembly. A sliding groove is provided on the side plate. The frame pressing block is rotatably mounted on the mounting frame via a connecting shaft. One end of the frame pressing block passes through the sliding groove and is fixedly mounted on the mounting block. The other end is hinged to the output shaft of the frame pressing cylinder. The frame pressing cylinder is hinged on the mounting frame.
[0009] The pressure frame block slides into the sliding groove.
[0010] Furthermore, the driving component is a rotary cylinder.
[0011] Furthermore, the swing arm is shaped like a c.
[0012] Furthermore, the top of the workbench is provided with a placement groove, the bottom of the sewing component is provided with a placement block that slides with the placement groove, the workbench is provided with a connecting groove that communicates with the placement groove, and four fixing blocks are evenly spaced circumferentially distributed on the bottom of the placement block. Each fixing block is provided with an arc-shaped slot, and a locking element is provided in the connecting groove. The locking element is inserted into the arc-shaped slot.
[0013] The workbench is equipped with an unlocking component that allows the locking component to disengage from the arc-shaped slot.
[0014] Furthermore, the locking component includes a locking block, a cross connecting frame, and an arc-shaped insert. A rotating shaft is fixed in the connecting groove, and a locking block is rotatably mounted on the rotating shaft. The locking block is provided with a cross connecting frame, and the cross connecting frame is provided with an arc-shaped insert that is inserted into the corresponding arc-shaped slot.
[0015] Furthermore, the unlocking components include a motor, a first bevel gear, and a second bevel gear. A motor slot is provided on the worktable, and a motor is fixedly installed in the motor slot. The output shaft of the motor extends into the connecting slot through the slot opening and is connected to the first bevel gear. A second bevel gear that meshes with the first bevel gear is fixed on the locking block.
[0016] Furthermore, the placement block is equipped with a guide block, and the top of the worktable is equipped with a guide groove that slides with the guide block.
[0017] The beneficial effects of this utility model are as follows:
[0018] 1. Through the setting of the pressure frame, swing arm and driving component, the swing arm can be rotated according to the sewing requirements, changing the covering area of the swing arm, and will not form a blind spot.
[0019] 2. By using placement blocks, fixing blocks, arc-shaped slots, locking and unlocking parts, the sewing components can be unlocked by pressing an external button, making it easy to quickly install the sewing components on the worktable. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of an underwear sewing device according to an embodiment of this application;
[0021] Figure 2 This is a schematic diagram of the structure of the pressure frame, swing arm, mounting bracket, pressure frame lifting assembly, mounting block and driving component in the embodiments of this application;
[0022] Figure 3 This is a schematic diagram of the sewing component in an embodiment of this application;
[0023] Figure 4This is a schematic diagram of the workbench structure in an embodiment of this application;
[0024] Figure 5 for Figure 4 Enlarged structural diagram at point A;
[0025] Figure 6 for Figure 1 A schematic diagram of the cross-sectional structure along the BB direction;
[0026] Figure 7 for Figure 6 A magnified structural diagram at point C.
[0027] Figure Labels
[0028] 1-Workbench, 2-Sewing assembly, 31-Pressure frame, 32-Swing arm, 33-Mounting bracket, 34-Pressure frame lifting assembly, 341-Pressure frame cylinder, 342-Pressure frame action block, 343-Side plate, 344-Sliding groove, 345-Connecting shaft, 35-Mounting block, 36-Drive component, 41-Placement groove, 42-Placement block, 43-Connecting groove, 44-Fixing block, 45-Arc-shaped slot, 46-Locking component, 461-Rotating shaft, 462-Locking block, 463-Cross connecting frame, 464-Arc-shaped insert, 47-Unlocking component, 471-Motor, 472-Motor slot, 473-First bevel gear, 474-Second bevel gear, 475-Slot, 51-Guide block, 52-Guide groove. Detailed Implementation
[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0031] The following description, in conjunction with the accompanying drawings, details a specific embodiment of an underwear sewing device provided in this application, and its application scenarios.
[0032] Example 1:
[0033] like Figure 1 and Figure 2 As shown, this application embodiment provides an underwear sewing device, including a workbench 1 and a sewing assembly 2; it also includes a pressing frame 31 and a swing arm 32. The workbench 1 is provided with a mounting frame 33, and the mounting frame 33 is provided with a pressing frame lifting assembly 34. The pressing frame lifting assembly 34 is fixedly provided with a mounting block 35, and a driving member 36 is fixedly installed on the mounting block 35. One end of the swing arm 32 is hinged to the pressing frame 31, and the other end is fixedly connected to the output end of the driving member 36. The driving member 36 can drive the swing arm 32 to rotate, changing the covering area of the swing arm 32.
[0034] Furthermore, the frame pressing and lifting assembly 34 includes a frame pressing cylinder 341 and a frame pressing block 342. A side plate 343 is fixedly provided on the side of the mounting frame 33 away from the sewing assembly 2. A sliding groove 344 is provided on the side plate 343. The frame pressing block 342 is rotatably mounted on the mounting frame 33 through a connecting shaft 345. One end of the frame pressing block 342 passes through the sliding groove 344 and is fixedly mounted with a mounting block 35. The other end is hinged to the output shaft of the frame pressing cylinder 341. The frame pressing cylinder 341 is hinged on the mounting frame 33. The frame pressing block 342 and the sliding groove 344 are in sliding engagement.
[0035] Furthermore, the drive component 36 is a rotary cylinder.
[0036] Furthermore, the swing arm 32 is shaped like a c.
[0037] In this embodiment of the application, due to the above-described structure, by placing the underwear to be sewn in the designated position and pressing the external start button, the frame pressing cylinder 341 is activated. The frame pressing cylinder 341 pushes the frame pressing block 342 to rotate around the connecting shaft 345, causing one end of the frame pressing block 342 near the frame pressing cylinder 341 to rise, while the other end drives the mounting block 35, the swing arm 32 and the frame pressing 31 to descend synchronously. The descent of the frame pressing 31 can press the underwear to be sewn, making the underwear flat, wrinkle-free and non-moving.
[0038] The mounting block 35 is equipped with a drive component 36. One end of the swing arm 32 is hinged to the pressure frame 31, and the other end is fixedly connected to the output end of the drive component 36. The drive component 36 is a rotary cylinder. When the rotary cylinder is started, it can drive the swing arm 32 to rotate. When the swing arm 32 rotates, the pressure frame 31 still presses the underwear, so that the swing arm 32 can be flipped according to the sewing requirements, changing the covering area of the swing arm 32, and will not form a blind spot.
[0039] After sewing is completed, the frame pressing cylinder 341 is activated, which pushes the frame pressing block 342 to rotate around the connecting shaft 345. This causes one end of the frame pressing block 342 near the frame pressing cylinder 341 to descend, while the other end drives the mounting block 35, the swing arm 32, and the frame pressing 31 to rise synchronously, so that the sewn underwear can be taken out.
[0040] Example 2:
[0041] like Figures 3 to 7 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the top of the workbench 1 is provided with a placement groove 41, the bottom of the sewing component 2 is provided with a placement block 42 that slides with the placement groove 41, the workbench 1 is provided with a connecting groove 43 that communicates with the placement groove 41, the bottom of the placement block 42 is provided with four fixing blocks 44 that are evenly spaced circumferentially distributed, each fixing block 44 is provided with an arc-shaped slot 45, the connecting groove 43 is provided with a locking member 46, the locking member 46 is inserted into the arc-shaped slot 45; wherein, the workbench 1 is provided with an unlocking member 47, the unlocking member 47 can disengage the locking member 46 from the arc-shaped slot 45.
[0042] Furthermore, the locking component 46 includes a locking block 462, a cross connecting bracket 463, and an arc-shaped insert 464. A rotating shaft 461 is fixedly installed in the connecting groove 43. The locking block 462 is rotatably mounted on the rotating shaft 461. The locking block 462 is provided with a cross connecting bracket 463. The cross connecting bracket 463 is provided with an arc-shaped insert 464 that is inserted into the corresponding arc-shaped slot 45.
[0043] Furthermore, the unlocking component 47 includes a motor 471, a first bevel gear 473, and a second bevel gear 474. The workbench 1 is provided with a motor slot 472, in which the motor 471 is fixedly installed. The output shaft of the motor 471 extends into the connecting slot 43 through the slot 475 and is connected to the first bevel gear 473. The locking block 462 is fixed with the second bevel gear 474, which meshes with the first bevel gear 473.
[0044] Furthermore, the placement block 42 is provided with a guide block 51, and the top of the worktable 1 is provided with a guide groove 52 that slides with the guide block 51.
[0045] In this embodiment of the application, due to the above-described structure, during installation, the operator aligns and inserts the placement block 42 and guide block 51 with the placement groove 41 and guide groove 52 respectively until the bottom of the placement block 42 is in contact with the bottom of the placement groove 41. At this time, the four fixing blocks 44 at the bottom of the placement block 42 are located in the connecting groove 43, and there is still a certain distance between the fixing blocks 44 and the first bevel gear 473. Then, by pressing the external fixing button, the motor 471 rotates in the forward direction. The forward rotation of the motor 471 drives the first bevel gear 473 to rotate. The rotation of the first bevel gear 473 drives the second bevel gear 474 and the locking block 462 to rotate around the rotating shaft 461. The rotation of the locking block 462 drives the cross connecting bracket 463 and the arc-shaped insert 464 to rotate. During the rotation, the four arc-shaped inserts 464 will be inserted into the four arc-shaped slots 45 respectively, thereby completing the installation.
[0046] During disassembly, the operator presses the external unlock button, and the motor 471 rotates in reverse. The reverse rotation of the motor 471 drives the first bevel gear 473 to rotate. The rotation of the first bevel gear 473 drives the second bevel gear 474 and the locking block 462 to rotate around the rotating shaft 461. The rotation of the locking block 462 drives the cross connecting frame 463 and the arc-shaped insert 464 to rotate. During the rotation, the arc-shaped insert 464 will disengage from the corresponding arc-shaped slot 45, thereby releasing the lock and removing the sewing component 2.
[0047] It should be noted that, in this document, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0048] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. An underwear sewing machine, comprising a worktable and sewing components, characterized in that, It also includes a pressure frame and a swing arm. A mounting frame is provided on the worktable, and a pressure frame lifting assembly is provided on the mounting frame. A mounting block is fixed on the pressure frame lifting assembly, and a driving component is fixedly installed on the mounting block. One end of the swing arm is hinged to the pressure frame, and the other end is fixedly connected to the output end of the driving component. The driving component can drive the swing arm to rotate and change the blocking area of the swing arm.
2. The underwear sewing equipment according to claim 1, characterized in that, The frame pressing and lifting assembly includes a frame pressing cylinder and a frame pressing block. A side plate is fixed on the side of the mounting frame away from the sewing assembly. A sliding groove is provided on the side plate. The frame pressing block is rotatably mounted on the mounting frame via a connecting shaft. One end of the frame pressing block passes through the sliding groove and is fixedly mounted on the mounting block. The other end is hinged to the output shaft of the frame pressing cylinder. The frame pressing cylinder is hinged on the mounting frame. The pressure frame block slides into the sliding groove.
3. The underwear sewing equipment according to claim 1, characterized in that, The driving component is a rotary cylinder.
4. The underwear sewing equipment according to claim 1, characterized in that, The swing arm is shaped like a c.
5. The underwear sewing equipment according to claim 1, characterized in that, The top of the workbench is provided with a placement slot, the bottom of the sewing component is provided with a placement block that slides with the placement slot, the workbench is provided with a connecting slot that communicates with the placement slot, and four fixing blocks are evenly spaced circumferentially distributed on the bottom of the placement block. Each fixing block is provided with an arc-shaped slot, and a locking element is provided in the connecting slot. The locking element is inserted into the arc-shaped slot. The workbench is equipped with an unlocking component that allows the locking component to disengage from the arc-shaped slot.
6. The underwear sewing equipment according to claim 5, characterized in that, The locking component includes a locking block, a cross connecting frame, and an arc-shaped insert. A rotating shaft is fixed in the connecting groove, and a locking block is rotatably mounted on the rotating shaft. The locking block is provided with a cross connecting frame, and the cross connecting frame is provided with an arc-shaped insert that is inserted into the corresponding arc-shaped slot.
7. The underwear sewing equipment according to claim 6, characterized in that, The unlocking components include a motor, a first bevel gear, and a second bevel gear. A motor slot is provided on the worktable, and a motor is fixedly installed in the motor slot. The output shaft of the motor extends into the connecting slot through the slot opening and is connected to the first bevel gear. A second bevel gear that meshes with the first bevel gear is fixed on the locking block.
8. The underwear sewing equipment according to claim 5, characterized in that, The placement block is equipped with a guide block, and the top of the worktable is equipped with a guide groove that slides with the guide block.