A motor-driven sewing auxiliary expansion device

Abstract

The utility model relates to the technical field of sewing machines, and in particular to a motor-driven sewing auxiliary expansion device, comprising a guide rail, wherein the guide rail is provided with a guide groove, a front slider and a rear slider are movably mounted on the guide groove, the front slider and the rear slider are respectively mounted with a front bracket and a rear bracket, a plurality of rollers are movably mounted on one side of the front bracket and the rear bracket, a driving motor is mounted on the rear slider, a driving gear is connected to the output end of the driving motor, and a rack for meshing with the driving gear is mounted on one side of the guide rail. The utility model adopts a motor as a power source to drive the rear slider forward or backward. Compared with the prior art that uses a pneumatic device as a power source, the motor drive does not need to be additionally equipped with a cylinder group and an air collecting device, which effectively saves space, reduces production costs, and is easier to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a motor-driven sewing auxiliary expansion device. Background Art

[0002] Most of the current clothing is made by sewing machines. When sewing elastic fabrics, the elastic band needs to be stretched first and then sewn to the clothes. In this case, if it is simply operated manually, uneven sewing will often occur, and the operator will easily become tired if the elastic band is stretched for a long time.

[0003] For example, a Chinese utility model, with publication number CN215404917U, discloses an improved trouser waist stretching device, comprising a guide rail, a first driving component, a second driving component, a first support frame and a second support frame, wherein the guide rail is fixedly provided with a guide groove, and the guide groove is slidably provided with a first slider and a second slider respectively; the first support frame and the second support frame are respectively mounted on the first slider and the second slider, and the first support frame and the second support frame are respectively provided with a first support roller and a second support roller; the guide rail is provided with a first fixed seat and a second fixed seat, and the parts of the first support frame and the second support frame that contact with the upper surfaces of the sliders are respectively formed with a first connecting seat and a second connecting seat extending in the direction of the guide rail.

[0004] This product is driven by a cylinder device, which can effectively improve work efficiency. However, the use of a cylinder group drive also requires the assembly of an air collection component, which requires more parts, a complex structure, and a high cost. Therefore, it is necessary to further improve this product. Summary of the invention

[0005] The utility model aims to provide a motor-driven sewing auxiliary expansion device to solve the problem of high production cost in the prior art.

[0006] The purpose of the utility model is achieved as follows: a motor-driven sewing auxiliary expansion device comprises a guide rail, the guide rail is provided with a guide groove, a front slider and a rear slider are movably mounted on the guide groove, the front slider and the rear slider are respectively mounted with a front bracket and a rear bracket, a plurality of rollers are movably mounted on one side of the front bracket and the rear bracket, a driving motor is mounted on the rear slider, a driving gear is connected to the output end of the driving motor, and a rack for meshing with the driving gear is mounted on one side of the guide rail.

[0007] Preferably, a limit plate is installed on one side of the rear slider, and inclined blocking pieces are arranged at both ends of the limit plate, and the limit plate is parallel to the rack.

[0008] Preferably, a front limit switch is installed at the front end of the rack, and a rear limit switch is installed at the rear end of the rack.

[0009] Preferably, the front slider is provided with a locking handle.

[0010] Preferably, the rear bracket is provided with an extension plate, and a driving motor is mounted on the extension plate.

[0011] Preferably, the extension plate is provided with a through hole 1 for the output end of the drive motor to pass through.

[0012] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0013] 1. The utility model adopts a motor as a power source to drive the rear slider forward or backward. Compared with the prior art that uses a pneumatic device as a power source, the motor drive does not need to be equipped with a cylinder group and an air collecting device, which effectively saves space, reduces production costs, and is easier to operate.

[0014] 2. The utility model controls the start of the driving motor through a switch, drives the driving gear to move forward or backward on the rack, thereby driving the rear slider to move forward or backward, and stops the driving motor by touching the limit switch through the limit plate, so that the rear slider is kept in a predetermined position, with a high degree of automation and simpler operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is the front view of the utility model.

[0017] Figure 3 for Figure 2 A schematic diagram of the enlarged structure in the middle.

[0018] Figure 4 It is a schematic diagram of the structure when the limit plate contacts the rear limit switch.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the rear bracket.

[0020] Figure markings: 1-guide rail; 2-guide groove; 3-front slider; 4-rear slider; 5-drive motor; 6-drive gear; 7-rack; 8-limit plate; 9-bevel baffle; 10-through hole 1; 11-front limit switch; 12-rear limit switch; 13-locking handle; 14-front bracket; 15-roller; 16-rear bracket; 17-extension plate. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0022] Combination Figure 1, including a guide rail 1, the guide rail 1 is provided with a guide groove 2, a front slider 3 and a rear slider 4 are movably installed on the guide groove 2, the front slider 3 and the rear slider 4 are respectively installed with a front bracket 14 and a rear bracket 16, a plurality of rollers 15 are movably installed on one side of the front bracket 14 and the rear bracket 16, a driving motor 5 is installed on the rear slider 4, the output end of the driving motor 5 is connected to a driving gear 6, and a rack 7 for meshing with the driving gear 6 is installed on one side of the guide rail 1. This product drives the driving gear 6 to rotate through the driving motor 5, so that the driving gear 6 meshes and moves on the rack 7, and the start of the driving motor 5 is controlled by a switch to drive the driving gear 6 to move forward or backward on the rack 7, thereby driving the rear slider 4 to move forward or backward, so that the elastic band is conveniently placed on the periphery of the roller 15, with a high degree of automation and simpler operation.

[0023] To prevent the rear slider 4 from moving beyond the stroke, Figure 1 and Figure 3 As shown, a limit plate 8 is installed on one side of the rear slider 4, and inclined baffles 9 are arranged at both ends of the limit plate 8. The limit plate 8 is parallel to the rack 7, and drives the limit plate 8 to move synchronously when the rear slider 4 moves. When the limit plate 8 contacts the limit device, the rear slider 4 stops moving. At the same time, the inclined baffle 9 can play a certain buffering role, thereby extending the service life of the limit plate 8.

[0024] Further, such as Figure 3 and Figure 4 As shown, a front limit switch 11 is installed at the front end of the rack 7, and a rear limit switch 12 is installed at the rear end of the rack 7. This product adopts a limit switch to control the operation of the motor. When the limit plate 8 abuts against the front limit switch 11, the front limit switch 11 is closed, the motor stops running, and the rear slider 4 moves to the retracted position; when the limit plate 8 abuts against the rear limit switch 12, the rear limit switch 12 is closed, the motor stops running, and the rear slider 4 moves to the extended position, which reduces the workers' operation workload and improves work efficiency.

[0025] Furthermore, in order to control the movement of the front slider 3, Figure 1 and Figure 2 The front slider 3 is provided with a locking handle 13. When the locking handle 13 is in a loose state, the front slider 3 can be freely moved to adjust the position. When the front slider 3 moves to the desired position, the locking handle 13 is rotated to fix the front slider 3 in the changed position. Compared with the prior art of controlling the slider operation by a cylinder group, this method is more convenient and has higher controllability.

[0026] Combination Figure 5The rear bracket 16 is provided with an extension plate 17, on which a drive motor 5 is mounted. The extension plate 17 is provided with a through hole 10 for the output end of the drive motor 5 to pass through. The extension plate 17 can stably mount the drive motor 5 to prevent the drive motor 5 from shifting during operation. At the same time, the output end of the drive motor 5 passes through the through hole 10 and is connected to the drive gear 6, which can effectively prevent the output end of the drive motor and the drive gear 6 from contacting the operator during operation and causing harm to the operator.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A motor-driven sewing auxiliary expansion device, characterized in that: The invention comprises a guide rail (1), wherein the guide rail (1) is provided with a guide groove (2), a front slider (3) and a rear slider (4) are movably mounted on the guide groove (2), the front slider (3) and the rear slider (4) are respectively mounted with a front bracket (14) and a rear bracket (16), a plurality of rollers (15) are movably mounted on one side of the front bracket (14) and the rear bracket (16), a driving motor (5) is mounted on the rear slider (4), an output end of the driving motor (5) is connected to a driving gear (6), and a rack (7) for meshing with the driving gear (6) is mounted on one side of the guide rail (1).

2. A motor-driven sewing auxiliary expansion device according to claim 1, characterized in that: A limiting plate (8) is installed on one side of the rear sliding block (4), and inclined surface blocking pieces (9) are arranged at both ends of the limiting plate (8). The limiting plate (8) is parallel to the rack (7).

3. A motor-driven sewing auxiliary expansion device according to claim 2, characterized in that: A front limit switch (11) is installed at the front end of the rack (7), and a rear limit switch (12) is installed at the rear end of the rack (7).

4. The motor-driven sewing auxiliary expansion device according to claim 1, characterized in that: The front sliding block (3) is provided with a locking handle (13).

5. The motor-driven sewing auxiliary expansion device according to claim 1, characterized in that: The rear support (16) is provided with an extension plate (17), and a driving motor (5) is mounted on the extension plate (17).

6. A motor-driven sewing auxiliary expansion device according to claim 5, characterized in that: The extension plate (17) is provided with a through hole (10) for the output end of the drive motor (5) to pass through.

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