A lockstitch sewing machine

Abstract

The utility model belongs to sewing technical field discloses a flat -bed sewing machine convenient to sewing protection, including flat -bed sewing machine body, the motor protection shell is connected to the rear side of flat -bed sewing machine body, the wire pipe is equipped with outside flat -bed sewing machine body, flat -bed sewing machine body is connected with the connecting frame, the needle is equipped with outside connecting frame, connecting frame passes through the lift structure and is connected with the needle, the transmission structure is equipped with inside motor protection shell, drives the rotation of the pivot through the setting transmission structure, the pivot drives the rotation of the protruding block, the protruding block will extrude the movable plate downward in the rotation process, the movable plate moves down and compresses the spring and will the needle move from the inside of connecting frame, when the protruding block is separated from the movable plate, the needle is re -entered into the connecting frame under the spring elasticity effect, to avoid the risk that personnel is scratched by the needle when taking and placing the clothes.

Description

Technical Field

[0001] This utility model belongs to the field of sewing technology, specifically relating to a flat sewing machine that facilitates sewing protective measures. Background Technology

[0002] A sewing machine is a machine that uses one or more sewing threads to create one or more stitches on fabric, interweaving or sewing together one or more layers of fabric. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, as well as products made of leather, plastic, and paper. The stitches produced are neat, beautiful, flat, and strong. Sewing speed is fast, and it is easy to use. However, with existing sewing machines, workers are prone to hand injuries from the needle when handling clothing. Therefore, a flatbed sewing machine with sewing protection is needed to protect workers from needle cuts. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the existing technology, the present invention provides a flat sewing machine that facilitates sewing protection, so as to solve the problems in the background technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A flat sewing machine for easy sewing protection, characterized in that: it includes a flat sewing machine body, a motor protective shell connected to the rear side of the flat sewing machine body, a thread tube provided on the outer side of the flat sewing machine body, a connecting frame connected to the flat sewing machine body, a needle provided on the outer side of the connecting frame, the connecting frame being connected to the needle via a lifting structure, and a transmission structure provided on the inner side of the motor protective shell.

[0005] Preferably, the lifting structure includes a movable plate, a spring is provided inside the connecting frame, the two ends of the spring are respectively connected to the movable plate and the connecting frame, a needle is connected to the lower end of the movable plate, a through hole is provided at the lower end of the connecting frame, and the needle is slidably connected to the through hole.

[0006] Preferably, the movable plate is connected to a slider, and the inner side of the connecting frame is provided with a sliding groove, and the slider is slidably connected to the sliding groove.

[0007] Preferably, the transmission structure includes a motor located inside the motor protective housing, a rotating shaft is provided inside the body of the flat sewing machine, the output shaft of the motor is connected to the rotating shaft, and a protrusion is fixedly connected to the rotating shaft.

[0008] Preferably, the inner side of the rotating shaft is provided with a limiting hole, the outer side of the flat sewing machine body is provided with a rotating block, the rotating block is connected to a limiting rod, and the limiting rod is engaged with the limiting hole.

[0009] Preferably, the conduit is connected to a thread breakage detection sensor, and the upper end of the flat sewing machine is equipped with an alarm, with the thread breakage detection sensor electrically connected to the alarm.

[0010] Compared with the prior art, this utility model has the following advantages: 1. By setting up a transmission structure, when the motor starts, it drives the rotating shaft to rotate, and the rotating shaft drives the protrusion to rotate. During the rotation, the protrusion will press down on the movable plate. The movable plate moves down to compress the spring and move the needle out from the inside of the connecting frame. When the protrusion is separated from the movable plate, the needle will re-enter the connecting frame under the action of the spring force, thus avoiding the risk of people being scratched by the needle when picking up and putting down clothes. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the flat sewing machine of this utility model; Figure 2 A schematic diagram of the transmission structure provided by this utility model; Figure 3 A schematic diagram of the lifting structure provided by this utility model; The reference numerals in the accompanying drawings of the instruction manual include: 1. Flatbed sewing machine body; 2. Thread conduit; 3. Thread breakage detection sensor; 4. Alarm; 5. Motor protective housing; 6. Moving block; 7. Needle; 8. Connecting frame; 9. Motor; 10. Limiting hole; 11. Limiting rod; 12. Protrusion; 13. Rotating shaft; 14. Movable plate; 15. Slider; 16. Slide groove; 17. Through hole; 18. Spring. Detailed Implementation

[0012] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0014] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0015] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1:

[0016] like Figure 1-3 The invention relates to a flat sewing machine for easy sewing protection. The machine includes a machine body 1, a motor protective shell 5 fixedly connected to the rear of the machine body 1, a thread tube 2 on the outer side of the machine body 1, a thread breakage detection sensor 3 fixedly connected to the lower end of the thread tube 2, and an alarm 4 at the upper end of the machine. The thread breakage detection sensor 3 is electrically connected to the alarm 4. When the sewing thread in the thread tube 2 breaks, the thread breakage detection sensor 3 sends an electrical signal to the alarm 4, causing the light on the alarm 4 to change to alert the operator. A connecting frame 8 is fixedly connected to the machine body 1, located below the thread tube 2. A needle 7 is located on the outer side of the connecting frame 8, and the connecting frame 8 is connected to the needle 7 via a lifting structure. A transmission structure is located inside the motor protective shell 5.

[0017] Furthermore, the lifting structure includes a movable plate 14 located inside the connecting frame 8. A spring 18 is provided inside the connecting frame 8, with both ends of the spring 18 connected to the movable plate 14 and the connecting frame 8 respectively. A needle 7 is fixedly connected to the lower end of the movable plate 14. A through hole 17 is provided at the lower end of the connecting frame 8, and the needle 7 is slidably connected to the through hole 17. A slider 15 is fixedly connected to the movable plate 14. A sliding groove 16 is provided inside the connecting frame 8, and the slider 15 is slidably connected to the sliding groove 16. The transmission structure includes a motor 9 located within a motor protective housing. 5. Inside the body 1 of the flat sewing machine, there is a rotating shaft 13. The output shaft of the motor 9 is connected to the rotating shaft 13. The rotating shaft 13 is fixedly connected to a protrusion 12. During the rotation, the protrusion 12 presses against the movable plate 14. The slider 15 and the slide groove 16 guide it so that it will not flip over during the downward movement. The movable plate 14 moves downward to compress the spring 18 and move the needle 7 out of the through hole 17. When the protrusion 12 no longer presses against the movable plate 14, the spring 18 rebounds, so that the needle 7 returns to the connecting frame 8.

[0018] Furthermore, a limiting hole 10 is provided on the inner side of the rotating shaft 13, and a moving block 6 is provided on the outer side of the sewing machine body 1. The moving block 6 is fixedly connected to a limiting rod 11, and the limiting rod 11 is engaged with the limiting hole 10. When taking or taking off clothes, the limiting rod 11 is used to hold the limiting hole 10 to prevent the motor 9 from being accidentally started and causing the needle 7 to descend, which could lead to injury.

[0019] Working principle: Place the clothing under the pillow 7, then start the motor 9 to make the rotating shaft 13 drive the protrusion 12 to rotate. During the rotation, the protrusion 12 squeezes the movable plate 14. The slider 15 and the slide groove 16 guide it to prevent it from flipping during the downward movement. The movable plate 14 moves downward to compress the spring 18 and move the needle 7 out of the through hole 17. When the protrusion 12 stops squeezing the movable plate 14, the spring 18 rebounds, allowing the needle 7 to return to the connecting frame 8. The thread breakage detection sensor 3 configured at the lower end of the thread tube 2 detects the sewing thread.

[0020] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A flat sewing machine for easy sewing of protective materials, characterized in that: The machine includes a flat sewing machine body (1), a motor protective shell (5) connected to the rear side of the flat sewing machine body (1), a wire tube (2) provided on the outer side of the flat sewing machine body (1), a connecting frame (8) connected to the flat sewing machine body (1), a needle (7) provided on the outer side of the connecting frame (8), the connecting frame (8) being connected to the needle (7) through a lifting structure, and a transmission structure provided on the inner side of the motor protective shell (5); the lifting structure includes a movable plate (14), a spring (18) provided on the inner side of the connecting frame (8), the two ends of the spring (18) being connected to the movable plate (14) and the connecting frame (8) respectively, the lower end of the movable plate (14) being connected to the needle (7), and the lower end of the connecting frame (8) being provided with a through hole (17), the needle (7) being slidably connected to the through hole (17).

2. The flat sewing machine for easy sewing of protective materials as described in claim 1, characterized in that: The movable plate (14) is connected to a slider (15), and the inner side of the connecting frame (8) is provided with a groove (16). The slider (15) is slidably connected to the groove (16).

3. A flat sewing machine for easy sewing of protective materials as described in claim 2, characterized in that: The transmission structure includes a motor (9), which is located inside the motor protective shell (5). The inner side of the flat sewing machine body (1) is provided with a rotating shaft (13). The output shaft of the motor (9) is connected to the rotating shaft (13), and the rotating shaft (13) is fixedly connected with a protrusion (12).

4. A flat sewing machine for easy sewing of protective materials as described in claim 3, characterized in that: The inner side of the rotating shaft (13) is provided with a limiting hole (10), and the outer side of the flat sewing machine body (1) is provided with a moving block (6). The moving block (6) is connected to a limiting rod (11), and the limiting rod (11) is engaged with the limiting hole (10).

5. A flat sewing machine for easy sewing of protective materials as described in claim 4, characterized in that: The conduit (2) is connected to a broken thread detection sensor (3), and the upper end of the flat sewing machine is equipped with an alarm (4). The broken thread detection sensor (3) is electrically connected to the alarm (4).

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