A multi-stitch length adjustable quilting machine

Abstract

The utility model discloses a kind of quilting machines of multiple needle pitch adjustment, including upper shaft, the first shaft sleeve is rotatably connected in the upper shaft outer wall, the first shaft sleeve side wall is fixedly connected with lift tooth telescopic link, the lift tooth telescopic link end is fixedly connected with second shaft sleeve, the feeding shaft is rotatably connected in the second shaft sleeve inside, the feeding shaft back is provided with mounting motor, the mounting motor output shaft is fixedly connected with feeding shaft one end. The utility model, by connecting branch plate and driving the movement of feeding shaft on driving sleeve set, then the second shaft sleeve on feeding shaft also drives lift tooth telescopic link to deflect along the direction on upper shaft by first shaft sleeve, so that feeding shaft is adjusted to appropriate interval, and feeding shaft is also moved to appropriate interval by lift tooth shaft driven by tooth frame component, so that the interval can be controlled as required, enhance its stability, simple structure, to improve use effect.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a quilting machine with multiple needle length adjustments. 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 is fast and easy to use. This has led to the development of art forms such as hand-pressed embroidery and computerized embroidery.

[0003] Chinese Patent Publication No. CN214782509U discloses a stitch length adjustment mechanism for a sewing machine used with thick materials. The mechanism includes a main shaft, a feed shaft, a feed transmission linkage connecting the main shaft and the feed shaft, and a feed dog. When the main shaft rotates, the feed transmission linkage drives a swing seat to rotate. The rotation of the swing seat drives the feed shaft to rotate, causing the feed dog to reciprocate along a direction perpendicular to the feed shaft to feed the fabric. This invention incorporates a stitch length adjustment drive motor, a stitch length adjustment linkage, and a precision adjustment linkage. One end of the precision adjustment linkage is hinged to the machine frame, and the other end is hinged to a rotating disk at a certain distance from the output shaft. The precision adjustment linkage limits the output shaft of the stitch length adjustment drive motor to a certain range to control the rotation precision of the rotating disk, thereby changing the swing range of the swing seat connected to the feed shaft, and thus adjusting the movement amplitude of the feed dog to adjust the sewing stitch length of the fabric.

[0004] However, the aforementioned sewing machines, when adjusting multiple stitch lengths, rely solely on spring adjustment, resulting in insufficient control precision, poor stability, and susceptibility to external factors. Furthermore, their complex structure, multi-link design, and increased manufacturing difficulty and maintenance costs make them less effective. Additionally, their limited adaptive stitch length adjustment range makes it difficult to meet the needs of fabrics of different thicknesses, thus reducing their performance. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quilting machine with adjustable stitch length.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quilting machine with multi-needle spacing adjustment, comprising an upper shaft, a first bushing rotatably sleeved on the outer side wall of the upper shaft, a lifting tooth telescopic rod fixedly connected to the side wall of the first bushing, a second bushing fixedly connected to the end of the lifting tooth telescopic rod, a feeding shaft rotatably sleeved inside the second bushing, a mounting motor provided on the back of the feeding shaft, an output shaft of the mounting motor fixedly connected to one end of the feeding shaft, a lifting tooth shaft connected to the outer side wall of the feeding shaft through a tooth bracket assembly, a drive kit rotatably sleeved on the outer side wall of the feeding shaft, an assembly part provided above the drive kit, and an assembly component connected to the bottom of the assembly part;

[0007] An adjustment support is provided on the top of the drive kit, and a connecting component is connected to the side wall of the adjustment support.

[0008] As a further description of the above technical solution: the assembly component includes an assembly electric telescopic rod fixedly connected to the bottom of the assembly part, an assembly recess is fixedly connected to the piston end of the assembly electric telescopic rod, an adjusting shaft is rotatably connected between the two sides of the inner wall of the assembly recess, and an adjusting kit is fixedly sleeved on the outer wall of the adjusting shaft. The assembly electric telescopic rod serves to push or pull the assembly recess to move.

[0009] As a further description of the above technical solution: one end of the adjusting shaft passes through the mounting recess and is fixedly connected to an adjusting gear; a drive housing is connected to the surface of the mounting recess; a protective housing is fixedly connected to the surface of the drive housing; and a self-locking motor is fixedly connected between the two sides of the inner wall of the protective housing. The protective housing serves to protect the self-locking motor.

[0010] As a further description of the above technical solution: the output shaft of the self-locking motor passes through the protective housing and the drive housing and extends into the interior of the drive housing. The output shaft of the self-locking motor is fixedly connected to a drive gear. The drive gear meshes with the adjusting gear, and the self-locking motor drives the drive gear to rotate.

[0011] As a further description of the above technical solution: the connecting assembly includes a connecting kit that penetrates and is fixedly connected to the side wall of the adjusting support. A connecting support plate is movably sleeved inside the connecting kit. A connecting groove is provided on the top of the connecting support plate, and a connecting tooth groove is provided on the inner wall of the connecting groove. The connecting kit serves to guide the connecting support plate.

[0012] As a further description of the above technical solution: the connecting kit is fixedly connected to the top of the connecting housing, and a connecting self-locking motor is fixedly connected between the two sides of the inner wall of the connecting housing. The output shaft of the connecting self-locking motor passes through the connecting housing and the connecting kit and extends into the connecting groove. The connecting self-locking motor is used to drive the connecting gear to rotate.

[0013] As a further description of the above technical solution: the output shaft of the self-locking motor is fixedly connected to a connecting gear, the connecting gear meshes with the connecting tooth groove, and one end of the connecting support plate is fixedly connected to the drive kit, so as to move within the connecting kit through the connecting support plate.

[0014] This utility model has the following beneficial effects:

[0015] The assembly assembly allows the self-locking motor to drive the drive gear to rotate. The drive gear then drives the adjusting shaft on the adjusting gear and the adjusting support on the adjusting kit to deflect. The adjusting support also adjusts the feeding shaft on the drive kit to a suitable spacing. The connecting assembly allows the self-locking motor to drive the connecting gear to rotate. Because the connecting gear meshes with the connecting tooth groove and moves within the groove, the connecting support plate moves within the connecting kit. The connecting support plate then drives the feeding shaft on the drive kit to move. The second bushing on the feeding shaft also drives the tooth-lifting telescopic rod to deflect along the upper shaft via the first bushing, adjusting the feeding shaft to a suitable spacing. The feeding shaft then drives the tooth-lifting shaft to a suitable spacing via the tooth frame assembly. This allows for spacing control as needed, enhancing stability. The structure is simple, thus improving performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a quilting machine with adjustable needle spacing proposed in this utility model;

[0017] Figure 2 This utility model presents a schematic diagram of the assembly parts, electric telescopic rod, assembly recess, adjusting shaft, and adjusting support structure of a quilting machine with multi-needle spacing adjustment.

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 for Figure 1 Enlarged structural diagram at point B.

[0020] Legend:

[0021] 1. Upper shaft; 2. Tooth lifting telescopic rod; 3. Motor installation; 4. Feeding shaft; 5. Tooth frame assembly; 6. Tooth lifting shaft; 7. Assembly parts; 8. Electric telescopic rod assembly; 9. Assembly recess; 10. Adjusting shaft; 11. Adjusting support; 12. Adjusting gear; 13. Drive housing; 14. Self-locking drive motor; 15. Drive gear; 16. Drive kit; 17. Connecting kit; 18. Connecting support plate; 19. Connecting tooth groove; 20. Connecting self-locking motor; 21. Connecting gear. Detailed Implementation

[0022] 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.

[0023] Reference Figures 1-4 This utility model provides a quilting machine with multi-needle spacing adjustment, including an upper shaft 1. A first bushing is rotatably sleeved on the outer wall of the upper shaft 1. A lifting tooth telescopic rod 2 is fixedly connected to the side wall of the first bushing. A second bushing is fixedly connected to the end of the lifting tooth telescopic rod 2. A feeding shaft 4 is rotatably sleeved inside the second bushing. A motor 3 is mounted on the back of the feeding shaft 4. The output shaft of the motor 3 is fixedly connected to one end of the feeding shaft 4. A lifting tooth shaft 6 is connected to the outer wall of the feeding shaft 4 through a tooth bracket assembly 5. A drive assembly 16 is rotatably sleeved on the outer wall of the feeding shaft 4. An assembly part 7 is provided above the drive assembly 16. An assembly component is connected to the bottom of the assembly part 7. The assembly component is used to adjust the adjustment part to a suitable angle and height. The assembly component includes an assembly electric telescopic rod 8 fixedly connected to the bottom of the assembly part 7. An assembly recess 9 is fixedly connected to the piston end of the electric telescopic rod 8. An adjusting shaft 10 is rotatably connected between the two sides of the inner wall of the assembly recess 9. An adjusting kit is fixedly sleeved on the outer wall of the adjusting shaft 10. One end of the adjusting shaft 10 passes through the assembly recess 9 and is fixedly connected to an adjusting gear 12. A drive housing 13 is connected to the surface of the assembly recess 9. A protective housing is fixedly connected to the surface of the drive housing 13. A drive self-locking motor 14 is fixedly connected between the two sides of the inner wall of the protective housing. The output shaft of the drive self-locking motor 14 passes through the protective housing and the drive housing 13 and extends into the interior of the drive housing 13. A drive gear 15 is fixedly connected to the output shaft of the drive self-locking motor 14. The drive gear 15 meshes with the adjusting gear 12. The drive self-locking motor 14 drives the drive gear 15 to rotate.

[0024] An adjusting support 11 is provided on the top of the drive assembly 16. A connecting component is connected to the side wall of the adjusting support 11. The connecting component includes a connecting kit 17 that passes through and is fixedly connected to the side wall of the adjusting support 11. A connecting support plate 18 is movably sleeved inside the connecting kit 17. A connecting groove is opened at the top of the connecting support plate 18, and a connecting tooth groove 19 is opened on the inner wall of the connecting groove. A connecting housing is fixedly connected to the top of the connecting kit 17. A connecting self-locking motor 20 is fixedly connected between the two sides of the inner wall of the connecting housing. The output shaft of the connecting self-locking motor 20 passes through the connecting housing and the connecting kit 17 and extends into the connecting groove. A connecting gear 21 is fixedly connected to the output shaft of the connecting self-locking motor 20. The connecting gear 21 meshes with the connecting tooth groove 19. One end of the connecting support plate 18 is fixedly connected to the drive assembly 16. The connecting component serves to move the drive assembly 16.

[0025] Working principle: When in use, first start the external controller, then start the self-locking motor 20. The self-locking motor 20 drives the connecting gear 21 to rotate. Since the connecting gear 21 meshes with the connecting tooth groove 19 and moves inside the connecting groove, the connecting support plate 18 on the connecting groove moves inside the connecting kit 17. Then the connecting support plate 18 also drives the feeding shaft 4 on the drive kit 16 to move. Then the second bushing on the feeding shaft 4 also drives the tooth lifting telescopic rod 2 to deflect along the direction on the upper shaft 1 through the first bushing, so that the feeding shaft 4 is adjusted to a suitable distance. Then the feeding shaft 4 also drives the tooth lifting shaft 6 to move to a suitable distance through the tooth frame assembly 5.

[0026] Next, the self-locking drive motor 14 is started, which drives the drive gear 15 to rotate. Then, the drive gear 15 drives the adjustment shaft 10 on the adjustment gear 12 and the adjustment support 11 on the adjustment kit to deflect. Then, the adjustment support 11 also drives the feeding shaft 4 on the drive kit 16 to deflect, and then also drives the feeding shaft 4 to adjust to a suitable distance. Then, the feeding shaft 4 also drives the lifting shaft 6 to move to a suitable distance through the tooth frame assembly 5.

[0027] Following the start of the assembly electric telescopic rod 8 on the starting assembly 7, the assembly recess 9 is pushed downward by the assembly electric telescopic rod 8. Then the assembly recess 9 also drives the connecting component on the adjusting support 11 to move. Then the connecting component also drives the drive kit 16 and the feeding shaft 4 to move to the appropriate height. Then the feeding shaft 4 also drives the lifting shaft 6 to move through the tooth bracket assembly 5, thereby moving to the appropriate spacing.

[0028] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quilting machine with adjustable stitch length, comprising an upper shaft (1), characterized in that: The outer side wall of the upper shaft (1) is rotatably sleeved with a first bushing, and the side wall of the first bushing is fixedly connected with a tooth lifting telescopic rod (2). The end of the tooth lifting telescopic rod (2) is fixedly connected with a second bushing. The inside of the second bushing is rotatably sleeved with a feeding shaft (4). The back of the feeding shaft (4) is provided with an installation motor (3). The output shaft of the installation motor (3) is fixedly connected to one end of the feeding shaft (4). The outer side wall of the feeding shaft (4) is connected with a tooth lifting shaft (6) through a tooth frame assembly (5). The outer side wall of the feeding shaft (4) is rotatably sleeved with a drive kit (16). The drive kit (16) is provided with an assembly part (7) above it. The bottom of the assembly part (7) is connected with an assembly component. An adjustment support (11) is provided above the drive kit (16), and a connecting component is connected to the side wall of the adjustment support (11).

2. The quilting machine with multi-needle spacing adjustment according to claim 1, characterized in that: The assembly assembly includes an electric telescopic rod (8) fixedly connected to the bottom of the assembly part (7). An assembly recess (9) is fixedly connected to the piston end of the electric telescopic rod (8). An adjustment shaft (10) is rotatably connected between the two sides of the inner wall of the assembly recess (9). An adjustment kit is fixedly sleeved on the outer wall of the adjustment shaft (10).

3. A quilting machine with multi-needle spacing adjustment according to claim 2, characterized in that: One end of the adjusting shaft (10) passes through the mounting recess (9) and is fixedly connected to the adjusting gear (12). The surface of the mounting recess (9) is connected to the drive housing (13). The surface of the drive housing (13) is fixedly connected to the protective housing. The two sides of the inner wall of the protective housing are fixedly connected to the drive self-locking motor (14).

4. A quilting machine with multi-needle spacing adjustment according to claim 3, characterized in that: The output shaft of the self-locking motor (14) passes through the protective housing and the drive housing (13) and extends into the interior of the drive housing (13). The output shaft of the self-locking motor (14) is fixedly connected to a drive gear (15), which meshes with the adjusting gear (12).

5. A quilting machine with multi-needle spacing adjustment according to claim 1, characterized in that: The connecting assembly includes a connecting kit (17) that penetrates and is fixedly connected to the side wall of the adjusting support (11). A connecting support plate (18) is movably sleeved inside the connecting kit (17). A connecting groove is provided on the top of the connecting support plate (18), and a connecting tooth groove (19) is provided on the inner wall of the connecting groove.

6. A quilting machine with multi-needle spacing adjustment according to claim 5, characterized in that: The top of the connecting kit (17) is fixedly connected to the connecting housing, and a connecting self-locking motor (20) is fixedly connected between the two sides of the inner wall of the connecting housing. The output shaft of the connecting self-locking motor (20) passes through the connecting housing and the connecting kit (17) and extends into the connecting groove.

7. A quilting machine with multi-needle spacing adjustment according to claim 6, characterized in that: The output shaft of the self-locking motor (20) is fixedly connected to a connecting gear (21), which meshes with the connecting tooth groove (19). One end of the connecting support plate (18) is fixedly connected to the drive kit (16).

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