Small-nozzle sewing machine

Abstract

The utility model relates to the technical field of sewing machines, in particular to a small-nozzle sewing machine which comprises a sewing machine base, an installation bottom plate is arranged at the top of the sewing machine base, a sewing machine body is arranged at the top of the installation bottom plate, and a plurality of supporting rollers are arranged at the end, close to the head of the sewing machine body, of the installation bottom plate. A mounting cantilever is fixedly mounted at the top of the mounting bottom plate through bolts, an adjusting sleeve is movably mounted at the end of the mounting cantilever, and an adjusting screw is in threaded connection with the interior of the adjusting sleeve. According to the small-nozzle sewing machine, the synchronous transmission gear and the synchronous transmission toothed belt drive the servo motor to drive the multiple driving rollers to rotate, materials are fed, the working efficiency is improved, the multiple driving rollers are matched with the supporting rollers to press the materials, the stability of the materials in the moving process is guaranteed, the materials are prevented from deviating, and meanwhile during feeding, the stability of the materials is guaranteed. The driving roller and the supporting roller are matched to tightly press the materials, and the materials can be limited when the driving roller stops rotating.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a small-mouth sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing materials are interwoven or sewn together. Sewing machines can sew cotton, linen, silk, wool, artificial fiber and other fabrics and leather, plastic, paper and other products. The stitches are neat, beautiful, flat and firm, and the sewing speed is fast and easy to use. It has also derived art forms such as hand-push embroidery and computer embroidery. In addition to the common forms, sewing machines also include cylinder-type high-speed sewing machines, computer large-mouth and small-mouth high-speed sewing machines, etc.

[0003] In a traditional sewing machine, the carrier table is usually a platform. When sewing, the material can be placed on the platform, and the operator moves the material to perform the sewing operation. Sewing is more dependent on manual operation and has relatively low efficiency. In addition, in order to improve work efficiency, there are some devices in the prior art that use conveyor belts to feed materials. The material is placed on the conveyor belt, and the material is transported by the conveyor belt to cooperate with the machine head for sewing operations. However, due to inertia and friction, the material often moves to a certain extent after the conveyor belt stops, which cannot meet the sewing requirements of some fine products. At the same time, the material is directly placed on the conveyor belt, lacks a corresponding positioning structure, and is easily caused to shift during the sewing process, affecting the sewing accuracy. For this reason, we propose a small-mouth sewing machine to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a small-mouth sewing machine, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a small-mouth sewing machine, including a sewing machine base, a mounting base plate is arranged on the top of the sewing machine base, and a sewing machine body is arranged on the top of the mounting base plate, a plurality of supporting rollers are arranged at one end of the mounting base plate close to the head of the sewing machine body, a mounting cantilever is fixedly installed on the top of the mounting base plate by bolts, and an adjusting sleeve is movably installed on the end of the mounting cantilever, an adjusting screw is internally threadedly connected to the adjusting sleeve, and a mounting bracket is fixedly connected to the bottom end of the adjusting screw, a plurality of driving rollers are movably installed inside the mounting bracket, and a servo motor cooperating with the driving rollers is fixedly installed on one side of the mounting bracket.

[0006] Preferably, an adjusting worm is fixedly mounted on the upper portion of the outer portion of the adjusting sleeve, an adjusting worm wheel is movably mounted on the top of the mounting cantilever, and the outer edge of the adjusting worm wheel is meshed with the guide rod.

[0007] Preferably, a guide rod is fixedly mounted on the top of the mounting bracket, and the guide rod is movably connected to the mounting cantilever, and a positioning ring cooperating with the adjusting sleeve is provided at the end of the mounting cantilever.

[0008] Preferably, the adjusting screw is located in the middle of the left and right sides of the mounting bracket, and a digital pressure sensor is arranged between the adjusting screw and the mounting bracket.

[0009] Preferably, the number of the driving rollers and the supporting rollers is the same, and the positions of the driving rollers and the supporting rollers correspond one to one.

[0010] Preferably, one end of the driving roller is fixedly sleeved with a synchronous transmission gear, and the outer meshing sleeve of the synchronous transmission gear is sleeved with a synchronous transmission toothed belt, and the output shaft of the servo motor is fixedly connected to a group of driving rollers at the end.

[0011] Preferably, the top of the supporting roller is in the same plane as the top of the mounting base plate, and a sewing area is provided between a plurality of the supporting rollers and a plurality of the driving rollers.

[0012] The utility model provides a small mouth sewing machine, which has the following beneficial effects:

[0013] 1. This small mouth sewing machine can drive several driving rollers to rotate through synchronous transmission gears and synchronous transmission toothed belt drive servo motors to feed materials and improve work efficiency. Several driving rollers and support rollers cooperate to press the materials to ensure the stability of the materials during movement and prevent the materials from running off. At the same time, when feeding, the driving rollers and support rollers cooperate to press the materials. When the driving rollers stop, the materials can be restricted to ensure that the materials can be accurately positioned to meet the sewing requirements of fine products.

[0014] 2. This small-mouth sewing machine can rotate the adjusting worm gear to drive the adjusting worm and the adjusting sleeve to rotate, which can drive the adjusting screw and the mounting bracket to move up and down, adjust the height of the driving roller, and then realize the transportation of different materials. It is applicable to a wider range of objects. In addition, the downward pressure is detected by a digital pressure sensor to ensure that the driving roller stably clamps the material while avoiding damage to the material caused by excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model after overall assembly;

[0016] Figure 2 This is a structural schematic diagram of the installation position of the support roller of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the connection between the mounting cantilever and the mounting bracket of the utility model;

[0018] Figure 4This is a schematic diagram of the structure of the top of the mounting bracket of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the installation position of the driving roller of the utility model.

[0020] In the figure: 1. sewing machine base; 2. mounting bottom plate; 3. sewing machine body; 4. support roller; 5. mounting cantilever; 6. adjusting sleeve; 7. adjusting screw; 8. mounting bracket; 9. digital pressure sensor; 10. driving roller; 11. synchronous transmission gear; 12. synchronous transmission toothed belt; 13. servo motor; 14. adjusting worm; 15. adjusting worm wheel; 16. guide rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1 , 2 3. The utility model provides a technical solution: a small-mouth sewing machine, including a sewing machine base 1, a mounting base plate 2 is arranged on the top of the sewing machine base 1, and a sewing machine body 3 is arranged on the top of the mounting base plate 2, and a plurality of supporting rollers 4 are arranged at one end of the mounting base plate 2 close to the head of the sewing machine body 3, and a plurality of driving rollers 10 cooperate with the supporting rollers 4 to press the material tightly to ensure the stability of the material during the movement and prevent the material from running off the track, a mounting cantilever 5 is fixedly installed on the top of the mounting base plate 2 by bolts, and an adjusting sleeve 6 is movably installed at the end of the mounting cantilever 5, the inner thread of the adjusting sleeve 6 is connected with an adjusting screw 7, and the bottom end of the adjusting screw 7 is fixedly connected with a mounting bracket 8, and the adjusting sleeve is rotated 6 rotates, which can drive the adjusting screw 7 and the mounting bracket 8 to move up and down, and adjust the height of the driving roller 10, so as to realize the conveying of different materials, and the applicable objects are more extensive. A plurality of driving rollers 10 are movably installed inside the mounting bracket 8. When feeding, the driving roller 10 and the supporting roller 4 cooperate to press the material. When the driving roller 10 stops, the material can be restricted to ensure that the material can be accurately positioned to meet the sewing requirements of fine products. A servo motor 13 cooperating with the driving roller 10 is fixedly installed on one side of the mounting bracket 8. The servo motor 13 can drive a plurality of driving rollers 10 to rotate through the synchronous transmission gear 11 and the synchronous transmission toothed belt 12 to feed the material and improve the work efficiency.

[0023] See also Figure 3 , 4An adjusting worm 14 is fixedly sleeved on the upper part of the outer part of the adjusting sleeve 6. The adjusting worm 14 and the adjusting sleeve 6 are driven to rotate by the adjusting worm wheel 15, which can drive the adjusting screw 7 and the mounting bracket 8 to move up and down, and adjust the height of the driving roller 10, so as to realize the transportation of different materials, and the applicable objects are more extensive. An adjusting worm wheel 15 is movably installed on the top of the mounting cantilever 5, and the outer edge of the adjusting worm wheel 15 is meshed with the guide rod 16. The adjusting worm wheel 15 and the adjusting worm 14 have self-locking properties, and the adjusting worm 14 can only be driven to rotate by the adjusting worm wheel 15, thereby ensuring the stability of the adjusting sleeve 6 and the adjusting screw 7 after the position is adjusted.

[0024] A guide rod 16 is fixedly installed on the top of the mounting bracket 8, and the guide rod 16 is movably connected to the mounting cantilever 5. The mounting bracket 8 is restricted by the guide rod 16 so that the mounting bracket 8 can only move up and down, ensuring that the rotating adjustment sleeve 6 can adjust the upper and lower positions of the mounting bracket 8. A positioning ring that cooperates with the adjustment sleeve 6 is provided at the end of the mounting cantilever 5. The positioning ring is used to restrict the adjustment sleeve 6 to ensure that the adjustment sleeve 6 is firmly connected to the mounting cantilever 5, and at the same time, the adjustment sleeve 6 can rotate stably.

[0025] The adjusting screw 7 is located in the middle of the left and right sides of the mounting bracket 8, so that the left and right sides of the mounting bracket 8 are subjected to balanced force, ensuring that the several driving rollers 10 in the mounting bracket 8 can stably press the material. A digital pressure sensor 9 is arranged between the adjusting screw 7 and the mounting bracket 8. The downward pressure is detected by the digital pressure sensor 9 to ensure that the driving roller 10 stably clamps the material while avoiding damage to the material caused by excessive pressure.

[0026] See also Figure 5 One end of the driving roller 10 is fixedly sleeved with a synchronous transmission gear 11, and the outer meshing sleeve of the synchronous transmission gear 11 is sleeved with a synchronous transmission toothed belt 12. The synchronous transmission gear 11 and the synchronous transmission toothed belt 12 are used for transmission to ensure that the servo motor 13 can drive several driving rollers 10 to rotate synchronously, thereby realizing stable driving of materials for feeding. The output shaft of the servo motor 13 is fixedly connected to a group of driving rollers 10 at the end. The servo motor 13 is a common existing technology at present, and its principle and working process are not described in detail here.

[0027] See also Figure 2 , 3The number of driving rollers 10 and supporting rollers 4 is the same, and the positions of driving rollers 10 and supporting rollers 4 correspond one to one. When feeding, the driving rollers 10 and supporting rollers 4 cooperate to press the materials. When the driving rollers 10 stop, the materials can be restricted to ensure that the materials can be accurately positioned to meet the sewing requirements of fine products. The tops of the supporting rollers 4 and the tops of the mounting base plates 2 are in the same plane to avoid the support rollers 4 affecting the movement of the materials. Sewing areas are provided between several supporting rollers 4 and several driving rollers 10, and blank positions are provided between several supporting rollers 4 and several driving rollers 10 to serve as sewing areas.

[0028] In summary, when the small-mouth sewing machine is used, before sewing the material, the adjusting worm wheel 15 is rotated to drive the adjusting worm 14 and the adjusting sleeve 6 to rotate, thereby driving the adjusting screw 7 and the mounting bracket 8 to move up and down, and the position of the driving roller 10 is adjusted according to the thickness of the material. At the same time, the downward pressure of the driving roller 10 on the material is detected by the digital pressure sensor 9 to ensure that the driving roller 10 can press the material tightly and avoid damage to the material due to excessive pressure. When sewing, the servo motor 13 drives several driving rollers 10 to rotate synchronously through the synchronous transmission gear 11 and the synchronous transmission toothed belt 12 to transport the material and improve work efficiency. When the driving roller 10 rotates to transport the material, the driving roller 10 cooperates with the supporting roller 4 to press the material tightly. After the driving roller 10 stops after being transported to the right position, the driving roller 10 can limit the material to prevent the material from continuing to slide.

[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small-mouth sewing machine, comprising a sewing machine base (1), a mounting base (2) being arranged on the top of the sewing machine base (1), and a sewing machine body (3) being arranged on the top of the mounting base (2), characterized in that: A plurality of supporting rollers (4) are arranged at one end of the mounting base plate (2) close to the head of the sewing machine body (3); a mounting cantilever (5) is fixedly mounted on the top of the mounting base plate (2) by means of bolts, and an adjusting sleeve (6) is movably mounted on the end of the mounting cantilever (5); an adjusting screw (7) is connected to the inner thread of the adjusting sleeve (6), and a mounting bracket (8) is fixedly connected to the bottom end of the adjusting screw (7); a plurality of driving rollers (10) are movably mounted inside the mounting bracket (8), and a servo motor (13) cooperating with the driving roller (10) is fixedly mounted on one side of the mounting bracket (8).

2. A small mouth sewing machine according to claim 1, characterized in that: An adjusting worm (14) is fixedly mounted on the upper portion of the outer portion of the adjusting sleeve (6), and an adjusting worm wheel (15) is movably mounted on the top of the mounting cantilever (5), and the outer edge of the adjusting worm wheel (15) is meshed with the guide rod (16).

3. A small mouth sewing machine according to claim 1, characterized in that: A guide rod (16) is fixedly mounted on the top of the mounting bracket (8), and the guide rod (16) is movably connected to the mounting cantilever (5), and a positioning ring cooperating with the adjusting sleeve (6) is provided at the end of the mounting cantilever (5).

4. A small mouth sewing machine according to claim 1, characterized in that: The adjusting screw (7) is located in the middle of the left and right sides of the mounting bracket (8), and a digital pressure sensor (9) is arranged between the adjusting screw (7) and the mounting bracket (8).

5. A small mouth sewing machine according to claim 1, characterized in that: The number of the driving rollers (10) and the supporting rollers (4) is the same, and the positions of the driving rollers (10) and the supporting rollers (4) correspond one to one.

6. A small mouth sewing machine according to claim 1, characterized in that: One end of the driving roller (10) is fixedly sleeved with a synchronous transmission gear (11), and the outer meshing sleeve of the synchronous transmission gear (11) is sleeved with a synchronous transmission toothed belt (12), and the output shaft of the servo motor (13) is fixedly connected to a group of driving rollers (10) at the end.

7. A small mouth sewing machine according to claim 1, characterized in that: The top of the support roller (4) is in the same plane as the top of the mounting base plate (2), and a sewing area is provided between a plurality of the support rollers (4) and a plurality of the driving rollers (10).

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