A hemming device for a twin needle lockstitch machine
By designing a folding device for a double-needle flat sewing machine, and utilizing the coordinated drive of the worktable, folding mechanism, and control panel, automated fabric folding and width adjustment are achieved, solving the problem of low efficiency in manual folding and improving processing efficiency and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI HUAJIAN GARMENT CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-05
AI Technical Summary
Existing double-needle sewing machines require manual hemming when processing fabrics, which is inefficient and cannot meet processing needs.
Design a folding device for a double-needle flat sewing machine, including a worktable, folding mechanism, moving plate, folding plate, cylinder, motor and other components. Drive these components to work together through the control panel to achieve automated folding and width adjustment.
It achieves automated fabric hemming, can adjust the hemming width, and is applicable to fabrics of different thicknesses, improving processing efficiency and applicability.
Smart Images

Figure CN224325527U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flat sewing machine technology, and in particular to a folding device for a double-needle flat sewing machine. Background Technology
[0002] Double-needle sewing machines are commonly used sewing machines that use two needles for two-synchronous or three-synchronous sewing and can turn corners to produce double threads that are parallel to each other. They are especially useful for mass production when using a flatbed sewing machine to do double-needle work. Double-needle sewing machines are highly efficient and produce neat and beautiful parallel double threads.
[0003] However, when processing fabrics, some fabrics require hemming, which requires manual hemming, resulting in low efficiency and difficulty in meeting processing needs.
[0004] Therefore, this application proposes a hemming device for a double-needle flat sewing machine to solve the problems in the background art. Utility Model Content
[0005] The purpose of this invention is to provide a folding device for a double-needle flat sewing machine, which not only folds the material but also adjusts the folding width and can fold materials of different thicknesses.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a folding device for a double-needle flat sewing machine, comprising a worktable for the double-needle flat sewing machine and a folding mechanism;
[0007] A bracket is mounted on the workbench, and a control panel is mounted on one side of the bracket. The folding mechanism is disposed on the workbench and the bracket, and the folding mechanism is connected to the control panel.
[0008] The folding mechanism includes a movable plate, a folding plate, a first cylinder, a first pressure roller, a second pressure roller, a second cylinder, a first motor, and a second motor. The movable plate is slidably connected to the worktable, and the folding plate is mounted on the movable plate. Material is placed on the folding plate. The first pressure roller and the second pressure roller are respectively mounted on the worktable and the support. The first and second pressure rollers abut against both sides of the material. Through the coordinated design of the worktable, support, folding mechanism, and control panel, only one end of the material needs to pass between the first and second pressure rollers. Then, the folding mechanism is driven and controlled by the control panel to achieve the effect of folding the material. Furthermore, the folding width of the material can be adjusted, improving flexibility and enabling folding of materials of different thicknesses, thus expanding the applicability.
[0009] A further feature of this invention is that a cylinder is fixedly mounted on the bracket, and a U-shaped plate is fixedly connected to the output end of the cylinder. The pressure roller is rotatably mounted on the U-shaped plate. By driving the cylinder and transmitting the U-shaped plate, the distance between the pressure roller and the pressure roller can be adjusted.
[0010] A further feature of this invention is that a motor is fixedly installed on one side of the U-shaped plate, and the output end of the motor is fixedly connected to one end of the pressure roller to drive the pressure roller to rotate.
[0011] A further feature of this invention is that the first motor is connected to the control panel for controlling the starting and stopping of the first motor.
[0012] A further feature of this invention is that: a mounting groove 1 is provided on the workbench, and the pressure roller 2 is rotatably installed in the mounting groove 1; a mounting groove 2 is provided on the workbench, and the mounting groove 2 is connected to the mounting groove 1; a motor 2 is fixedly installed in the mounting groove 2, and the output end of the motor 2 is fixedly connected to one end of the pressure roller 2 for rotating and driving the pressure roller 2, such that the rotation direction of the pressure roller 2 is opposite to that of the pressure roller 1.
[0013] A further feature of this invention is that the second electric motor is connected to the control panel for controlling the starting and stopping of the second electric motor.
[0014] A further feature of this invention is that a sliding groove is provided on the workbench, and the moving plate slides within the sliding groove, which facilitates the moving plate to drive the folding plate to move.
[0015] A further feature of this invention is that a second cylinder is fixedly installed at the bottom of the workbench, the output end of the second cylinder is fixedly connected to the moving plate, and the second cylinder is connected to the control panel. By controlling the extension and retraction of the second cylinder, the distance between one end of the folding plate and the first and second pressure rollers can be adjusted, thereby achieving the effect of adjusting the width of the folded edge of the material and improving flexibility.
[0016] A further feature of this invention is that a threaded rod is threadedly connected to the folding plate, and one end of the threaded rod is rotatably connected to the moving plate. By rotating the threaded rod, the threaded rod and the folding plate are subjected to threaded transmission, thereby achieving the effect of adjusting the distance between the folding plate and the worktable.
[0017] The beneficial effects of this utility model are as follows: through the coordinated design of the workbench, support, folding mechanism and control panel, only one end of the material needs to pass between the first and second pressure rollers. Then, the folding mechanism can be driven and controlled by the control panel to achieve the effect of folding the material. Moreover, the folding width of the material can be adjusted, which improves flexibility and enables the folding of materials of different thicknesses, thus expanding the scope of application. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a three-dimensional structural diagram of the hemming device of a double-needle flat sewing machine proposed in this utility model;
[0020] Figure 2 This is a side view of the hemming device of a double-needle flat sewing machine proposed in this utility model;
[0021] Figure 3 This is a bottom view of the folding device of a double-needle flat sewing machine proposed in this utility model;
[0022] Figure 4 This is an assembly diagram of the hemming device for a double-needle flat sewing machine according to the present invention;
[0023] Figure 5 This is a partially exploded view of the hemming device of a double-needle flat sewing machine proposed in this utility model.
[0024] In the diagram, 1. Workbench; 2. Moving plate; 3. Folding plate; 4. Material; 5. Support; 6. Cylinder 1; 7. Pressure roller 1; 8. Pressure roller 2; 9. Cylinder 2; 10. Motor 1; 11. Motor 2; 12. Threaded rod; 13. Control panel. Detailed Implementation
[0025] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] Reference Figures 1-5 A folding device for a double-needle flat sewing machine includes a worktable 1 for the double-needle flat sewing machine and a folding mechanism.
[0028] A support 5 is installed on the workbench 1, and a control panel 13 is installed on one side of the support 5. The folding mechanism is set on the workbench 1 and the support 5, and the folding mechanism is connected to the control panel 13. A double-needle flat sewing machine is installed on the workbench 1 and corresponds to the folding mechanism (not shown in the figure). The double-needle flat sewing machine can achieve the effect of sewing the folded material 4. The specific structure and working principle of the double-needle flat sewing machine can be referred to the literature with application number: 202122503265.1. This is the prior art and will not be described in detail.
[0029] The folding mechanism includes a movable plate 2, a folding plate 3, a cylinder 6, a pressure roller 7, a pressure roller 8, a cylinder 9, a motor 10, and a motor 11. The movable plate 2 is slidably connected to the worktable 1, and the folding plate 3 is mounted on the movable plate 2. Material 4 is placed on the folding plate 3. Pressure roller 7 and pressure roller 8 are respectively mounted on the worktable 1 and the support 5. Pressure roller 7 and pressure roller 8 abut against both sides of material 4. Through the cooperative design between the worktable 1, the support 5, the folding mechanism, and the control panel 13, one end of material 4 only needs to pass between pressure roller 7 and pressure roller 8. Then, the folding mechanism is driven and controlled by the control panel 13 to achieve the effect of folding material 4. Moreover, the folding width of material 4 can be adjusted, which improves flexibility and enables folding of materials of different thicknesses, thus expanding the scope of application.
[0030] In this method, a cylinder 6 is fixedly installed on the bracket 5, and a U-shaped plate is fixedly connected to the output end of the cylinder 6. The pressure roller 7 is rotatably installed on the U-shaped plate. The distance between the pressure roller 7 and the pressure roller 8 can be adjusted by driving the cylinder 6 and transmitting the U-shaped plate.
[0031] In this method, a motor 10 is fixedly installed on one side of the U-shaped plate, and the output end of the motor 10 is fixedly connected to one end of the pressure roller 7 for rotating the pressure roller 7.
[0032] In this configuration, motor 10 is connected to control panel 13 to control the start and stop of motor 10. Motor 10 is a servo motor, which allows control panel 13 to precisely control the speed of motor 10.
[0033] In this method, the worktable 1 is provided with a first mounting groove, and the second pressure roller 8 is rotatably installed in the first mounting groove. The worktable 1 is provided with a second mounting groove, which is connected to the first mounting groove. The second motor 11 is fixedly installed in the second mounting groove. The output end of the second motor 11 is fixedly connected to one end of the second pressure roller 8, which is used to drive the second pressure roller 8 to rotate, and makes the second pressure roller 8 rotate in the opposite direction to the first pressure roller 7.
[0034] In this configuration, the second motor 11 is connected to the control panel 13 to control the start and stop of the second motor 11. The second motor 11 is a servo motor, which allows the control panel 13 to precisely control the speed of the second motor 11.
[0035] In this method, a sliding groove is provided on the workbench 1, and the moving plate 2 slides in the sliding groove, so that the moving plate 2 can drive the folding plate 3 to move.
[0036] In this method, a cylinder 2 9 is fixedly installed at the bottom of the workbench 1. The output end of the cylinder 2 9 is fixedly connected to the moving plate 2. The cylinder 2 9 is connected to the control panel 13. By controlling the extension and retraction of the cylinder 2 9, the distance between one end of the folding plate 3 and the pressure roller 7 and pressure roller 8 can be adjusted, thereby achieving the effect of adjusting the width of the folded edge of the material and improving flexibility.
[0037] In this method, a threaded rod 12 is threadedly connected to the folding plate 3. One end of the threaded rod 12 is rotatably connected to the moving plate 2. By rotating the threaded rod 12, the threaded rod 12 and the folding plate 3 are threadedly driven, thereby achieving the effect of adjusting the distance between the folding plate 3 and the worktable 1. One end of the threaded rod 12 is fixedly fitted with a bearing 1. The outer wall of the bearing 1 is fixedly connected to the moving plate 2. The top of the moving plate 2 is provided with a sliding groove 2. A guide rod is slidably connected in the sliding groove 2. One end of the guide rod is fixedly connected to the folding plate 3.
[0038] Working principle: During use, the preset program in the control panel 13 drives and controls cylinder 6, cylinder 9, motor 10 and motor 11.
[0039] First, one end of material 4 is passed between pressure roller 7 and pressure roller 8, and the folding plate 3 is positioned above material 4. Then, one end of the folding plate 3 is aligned with the folding line of material 4. After that, the worker folds material 4 with one end of the folding plate 3 as the center. Then, by rotating the threaded rod 12, the folding plate 3 is made to act on material 4, which facilitates the clamping of material 4 by pressure roller 7 and pressure roller 8. Then, the cylinder 6 drives pressure roller 7 to abut against material 4, thereby achieving the effect of folding material 4.
[0040] Meanwhile, by controlling the distance between one end of the folding plate 3 and the pressure roller 7 and the pressure roller 8, the width of the folded edge of the material can be adjusted, thus improving flexibility.
[0041] The distance between pressure roller 7 and pressure roller 8 can be adjusted by driving cylinder 6 and transmitting U-shaped plate. At the same time, by rotating threaded rod 12, threaded rod 12 and folding plate 3 are driven by thread, thereby adjusting the distance between folding plate 3 and worktable 1. This enables the folding of materials of different thicknesses and improves the applicability.
[0042] Driven by motor 10 and motor 21, pressure roller 7 and pressure roller 8 rotate on the U-shaped plate and worktable 1 respectively and act on both sides of material 4, thereby achieving the effect of further folding the material 4.
[0043] The technological advancements of this invention compared to existing technologies are as follows: through the cooperation of various components, not only can the material 4 be folded, improving convenience and efficiency, but the folding width of the material 4 can also be adjusted, enhancing flexibility. Furthermore, it can fold materials of different thicknesses, expanding its applicability. Moreover, the structure is simple and its practicality is higher.
Claims
1. A folding device for a double-needle flat sewing machine, characterized in that, Includes a worktable (1) for a double-needle flat sewing machine and a folding mechanism; A bracket (5) is installed on the workbench (1), and a control panel (13) is installed on one side of the bracket (5). The folding mechanism is set on the workbench (1) and the bracket (5), and the folding mechanism is connected to the control panel (13). The folding mechanism includes a moving plate (2), a folding plate (3), a cylinder (6), a pressure roller (7), a pressure roller (8), a cylinder (9), a motor (10), and a motor (11). The moving plate (2) is slidably connected to the workbench (1). The folding plate (3) is installed on the moving plate (2). Material (4) is placed on the folding plate (3). Pressure roller (7) and pressure roller (8) are installed on the workbench (1) and the support (5), respectively. The pressure roller (7) and pressure roller (8) abut against both sides of the material (4).
2. The hemming device of a double-needle flat sewing machine according to claim 1, characterized in that: A cylinder (6) is fixedly installed on the bracket (5), and a U-shaped plate is fixedly connected to the output end of the cylinder (6). The pressure roller (7) is rotatably installed on the U-shaped plate.
3. The hemming device of a double-needle flat sewing machine according to claim 2, characterized in that: A motor (10) is fixedly installed on one side of the U-shaped plate, and the output end of the motor (10) is fixedly connected to one end of the pressure roller (7).
4. The hemming device of a double-needle flat sewing machine according to claim 3, characterized in that: The motor (10) is connected to the control panel (13).
5. The hemming device of a double-needle flat sewing machine according to claim 1, characterized in that: The workbench (1) has an installation groove, and the pressure roller (8) is rotatably installed in the installation groove.
6. The hemming device of a double-needle flat sewing machine according to claim 5, characterized in that: The workbench (1) has an installation groove 2, which is connected to the installation groove 1. The installation groove 2 has a motor 2 (11) fixedly installed inside it, and the output end of the motor 2 (11) is fixedly connected to one end of the pressure roller 2 (8).
7. The hemming device of a double-needle flat sewing machine according to claim 6, characterized in that: The second electric motor (11) is connected to the control panel (13).
8. The hemming device of a double-needle flat sewing machine according to claim 1, characterized in that: The workbench (1) is provided with a sliding groove, and the moving plate (2) slides in the sliding groove.
9. The hemming device of a double-needle flat sewing machine according to claim 1, characterized in that: A cylinder 2 (9) is fixedly installed at the bottom of the workbench (1). The output end of the cylinder 2 (9) is fixedly connected to the moving plate (2). The cylinder 2 (9) is connected to the control panel (13).
10. The hemming device of a double-needle flat sewing machine according to claim 1, characterized in that: A threaded rod (12) is threadedly connected to the folded edge plate (3), and one end of the threaded rod (12) is rotatably connected to the movable plate (2).