Feeding centering adjusting mechanism of longitudinal sewing machine

Abstract

The utility model discloses a longitudinal sewing machine feeding centering adjusting mechanism which comprises a cloth roll unwinding device, a cloth width measuring device, an edge suction device, a first inductor of the cloth width measuring device located in the middle, a second inductor in signal connection with a first driving motor of the cloth roll unwinding device located at the foremost portion and a third driving motor of a driving assembly of the edge suction device located at the rear portion. A support and a rolling roller of the cloth roll cloth releasing device can be driven to move left and right integrally, a first edge suction device and a second edge suction device can be driven to move towards the middle in the opposite direction or move towards the side edge in the reverse direction at the same time, centering fine adjustment is achieved, it is guaranteed that the two edges of a long-strip towel are located on the edge sewing datum line after the long-strip towel enters the longitudinal sewing machine, and feeding deviation of the long-strip towel is prevented.

Description

Technical Field

[0001] The utility model relates to the field of textile machinery and equipment, in particular to a feed centering adjustment mechanism for a longitudinal sewing machine. Background Art

[0002] Textiles such as sheets and towels are cut into long strips according to specifications, and the long towel rolls are then fed into the longitudinal sewing machine for sewing on both long sides. The sewing process must ensure that both sides of the long towel are sewn on the reference line. Centering and deviation control during the feeding of the long towel is particularly important. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a longitudinal sewing machine feed centering adjustment mechanism, which monitors the positions of both sides of the long towel during its movement, and uses signal feedback to adjust the left and right shift alignment of the front cloth roll and cloth placing device, as well as adjust and fix the position of the rear edge suction device according to the width of the long towel.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The feed centering adjustment mechanism of the longitudinal sewing machine includes a cloth roll and cloth placing device, a cloth width measuring device and an edge suction device. The cloth roll and cloth placing device located at the front includes multiple rollers whose two ends are rotatably installed on a bracket to form a roll placing groove. A driving motor 1 is connected to the bracket through a screw rod, and can drive the bracket and the rollers to shift left and right as a whole; the cloth width measuring device is installed on a cloth guide frame located behind the cloth roll and cloth placing device. The cloth width measuring device includes a sensor 1, a sensor 2 and a moving component. The sensor 1 and the sensor 2 are respectively arranged on the left and right sides of the cloth guide frame where the cloth passes through the path. The sensor 1 and the sensor 2 are connected to the moving component, and the moving component can Drive sensor 1 and sensor 2 to shift toward the middle at the same time or shift in opposite directions to both sides at the same time; the edge suction device is located on the towel rack of the longitudinal sewing machine behind the fabric width measuring device, and the edge suction device includes edge suction device 1, edge suction device 2 and a driving component. Edge suction device 1 and edge suction device 2 are respectively arranged on the left and right sides of the towel rack of the longitudinal sewing machine where the fabric passes, and edge suction device 1 and edge suction device 2 are respectively connected to the driving component, and the driving component can drive edge suction device 1 and edge suction device 2 to shift toward the middle at the same time or shift in opposite directions to the sides at the same time; the signals of sensor 1 and sensor 2 are connected to the driving motor 1 of the cloth roll and cloth release device and the driving motor 3 of the driving component of the edge suction device.

[0006] A further improvement is that baffles are movably mounted on both ends of the roller of the cloth roll placing device. The baffles are mounted to limit the displacement of the width of the long towel roll, and the baffles are movably mounted so as to be adjustable according to the different widths of the produced long towel rolls.

[0007] A further improvement is that the baffle is triangular, one bottom corner of the triangle is movably sleeved on the front support beam, and the other bottom corner can be placed on the rear support beam. Adjusting the position of the baffle is convenient for operation.

[0008] A further improvement is to provide a scale on the rear support beam in the same direction as the roller, with the scale zero point at the center of the support beam and the scale extending to both sides. The corresponding scale adjustment is more convenient.

[0009] A further improvement is that the moving assembly of the fabric width measuring device includes a synchronous pulley and a second drive motor, the two synchronous pulleys are respectively installed on the left and right sides of the fabric guide frame, the synchronous belt is wound around the synchronous pulley, the second drive motor drives the synchronous pulley connected to one side, and the first sensor and the second sensor are respectively connected to the synchronous belts of the upper and lower layers. The first sensor and the second sensor can be synchronously moved toward the middle to reduce the width and monitor the two sides of the long towel, or synchronously moved to the two sides to increase the width and monitor the two sides of the long towel.

[0010] A further improvement is that the driving assembly of the edge suction device includes a ladder screw and a driving motor three, the driving motor three drives the ladder screw connected on both sides, and the edge suction device one and the edge suction device two are respectively connected to the ladder screw on both sides. Beneficial Effects

[0011] The long towel may produce a certain left and right displacement during the unwinding and towel feeding process, resulting in a certain deviation away from the seam edge reference line when entering the longitudinal sewing machine. The sensor 1 and sensor 2 of the width measuring device located in the middle monitor the position of the two sides of the long towel after unwinding, and transmit the signal to the cloth roll and cloth feeding device in the front for centering fine adjustment to ensure that the two sides of the long towel are on the seam edge reference line after entering the longitudinal sewing machine; at the same time, the width measuring device sensor measures the width data signal of the long towel and transmits it to the PCL to control the drive motor of the rear suction device to adjust the positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a side view of the structure of the utility model;

[0013] Figure 2 It is a three-dimensional schematic diagram of a cloth roll placing device, a cloth width measuring device and a cloth guide frame;

[0014] Figure 3 It is a schematic diagram of the structure of a fabric width measuring device;

[0015] Figure 4 This is a partial enlarged view of the fabric width from one end of the measuring device;

[0016] Figure 5 It is a schematic diagram of the structure of the edge suction device and the towel rack. DETAILED DESCRIPTION

[0017] like Figures 1 to 5As shown, the utility model comprises a cloth roll and cloth placing device 1, a cloth width measuring device 2 and an edge suction device 3. The cloth roll and cloth placing device 1 located at the front comprises a plurality of rollers 11 whose two ends are rotatably mounted on a bracket 12 to form a roll placing groove. A driving motor 13 is connected to the bracket 12 through a screw rod, and can drive the bracket 12 and the rollers 11 to shift left and right as a whole. The cloth width measuring device 2 is mounted on a cloth guide frame 4 located behind the cloth roll and cloth placing device 1. The cloth width measuring device 2 comprises a sensor 1 21, a sensor 2 2 2 and a moving assembly 23, the sensor 1 21 and the sensor 2 22 are respectively arranged on the left and right sides of the cloth guide frame 4 where the cloth passes through the path, the sensor 1 21 and the sensor 2 22 are respectively connected to the moving assembly 23, the moving assembly 23 includes a synchronous pulley and a driving motor 2, two synchronous pulleys 231 are respectively installed on the left and right sides of the cloth guide frame, the synchronous belt 232 is wound around the synchronous pulley 231, the driving motor 233 drives the synchronous pulley 231 connected to one side, the sensor 1 21 and the sensor 2 22 are respectively connected to the upper and lower The moving assembly 23 can drive the sensor 1 21 and the sensor 2 22 to shift toward the middle or shift to the opposite sides at the same time; the edge suction device 3 is located on the longitudinal sewing machine towel rack 5 behind the fabric width measuring device, and the edge suction device 3 includes an edge suction device 1 31, an edge suction device 2 32 and a driving assembly 33. The edge suction device 1 31 and the edge suction device 2 32 are respectively arranged on the left and right sides of the longitudinal sewing machine towel rack 5 where the fabric passes through the path, and the edge suction device 1 31 and the edge suction device 2 32 are respectively connected to the driving assembly 33. The drive assembly 33 includes a ladder screw and a drive motor three. The drive motor three 332 drives the ladder screws 331 connected on both sides. The edge absorber one 31 and the edge absorber two 32 are respectively connected to the ladder screws 331 on both sides. The drive assembly 33 can drive the edge absorber one 31 and the edge absorber two 32 to shift toward the middle at the same time or to shift in the opposite direction to the side at the same time; the sensor one 21 and the sensor two 22 signals are connected to the drive motor one 13 of the cloth rolling and placing device 1 and the drive motor three 332 of the edge absorber drive assembly. When the long towel is being fed, sensor 1 and sensor 2 are located on both sides of the long towel for monitoring. If any deviation occurs, the obtained data signal is transmitted to the driving motor 1 in front for fine-tuning to the left and right to ensure alignment and not deviate from the sewing reference line. At the same time, the long strips measured by sensor 1 and sensor 2 are transmitted to the PLC by wide-width data. Before feeding, the PLC controls the driving motor 3 of the edge suction device to adjust the position according to the width. During the feeding process, the edge suction device itself monitors and fine-tunes the side position of the long towel to correct the deviation.

[0018] The roller 11 of the cloth roll placing device 1 is movably mounted with baffles 14 at both ends. The baffle 14 is triangular, and one bottom corner of the triangle is movably sleeved on the front support beam 15, and the other bottom corner can be placed on the rear support beam. A scale 16 is installed in the same direction as the roller on the rear support beam. The zero point of the scale 16 is at the center point of the support beam 15, and the scale extends to both sides. When sewing long towels of different widths, the cloth roll can be placed in the middle of the roller, and then the baffle can be manually adjusted to be close to the two ends of the cloth roll.

[0019] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. The feed centering adjustment mechanism of the longitudinal sewing machine is characterized by: The cloth roll unwinding device (1) comprises a cloth roll unwinding device (1), a cloth width measuring device (2) and an edge suction device (3). The cloth roll unwinding device (1) located at the front comprises a plurality of rollers (11) whose two ends are rotatably mounted on a bracket (12) to form an unwinding groove. A driving motor (13) is connected to the bracket (12) via a screw rod and can drive the bracket (12) and the rollers (11) to shift left and right as a whole. The cloth width measuring device (2) is mounted on a cloth guide frame (4) located behind the cloth roll unwinding device (1). The cloth width measuring device (2) comprises a sensor (21), a sensor (22) and a moving component (23). The sensor (21) and the sensor (22) are respectively arranged on the left and right sides of the cloth guide frame (4) where the cloth passes. The sensor (21) and the sensor (22) are connected to the moving component (23). The moving component (23) can drive the sensor (21) and the sensor (22) to move the cloth guide frame (4) to the left and right sides of the cloth passing path. The first sensor (21) and the second sensor (22) are simultaneously displaced toward the middle or simultaneously displaced toward the sides in the opposite direction; the edge suction device (3) is located on the longitudinal sewing machine towel rack (5) behind the cloth width measuring device, and the edge suction device (3) comprises an edge suction device (31), an edge suction device (32) and a driving assembly (33); the edge suction device (31) and the second sensor (32) are respectively arranged on the left and right sides of the longitudinal sewing machine towel rack (5) where the cloth passes through the path; the edge suction device (31) and the second sensor (32) are respectively connected to the driving assembly (33); the driving assembly (33) can drive the edge suction device (31) and the second sensor (32) to simultaneously displace toward the middle or simultaneously displace toward the sides in the opposite direction; the signals of the first sensor (21) and the second sensor (22) are connected to the driving motor (13) of the cloth rolling and unwinding device (1) and the driving motor (332) of the edge suction device driving assembly.

2. The longitudinal seam machine feed centering adjustment mechanism according to claim 1, characterized in that: Baffles (14) are movably mounted on both ends of the roller (11) of the cloth roll unwinding device (1).

3. The feed centering adjustment mechanism for a longitudinal seam machine according to claim 2, characterized in that: The baffle (14) is triangular in shape, one bottom corner of the triangle is movably sleeved on the front support beam (15), and the other bottom corner can be placed on the rear support beam.

4. The feed centering adjustment mechanism for a longitudinal seam machine according to claim 3, characterized in that: A scale (16) installed in the same direction as the roller is arranged on the rear support beam, the zero point of the scale (16) is at the center point of the support beam (15), and the scales extend to both sides.

5. The feed centering adjustment mechanism for a longitudinal seam machine according to claim 1, characterized in that: The moving assembly (23) of the cloth width measuring device comprises a synchronous pulley and a second driving motor, wherein two synchronous pulleys (231) are respectively mounted on the left and right sides of the cloth guide frame, a synchronous belt (232) is wound around the synchronous pulleys (231), a second driving motor (233) drives the synchronous pulley (231) connected to one side, and a first sensor (21) and a second sensor (22) are respectively connected to the synchronous belts (232) on the upper and lower layers.

6. The feed centering adjustment mechanism for a longitudinal seam machine according to claim 1, characterized in that: The driving assembly (33) of the edge suction device comprises a ladder screw and a driving motor three, wherein the driving motor three (332) drives the ladder screw (331) connected to both sides, and the edge suction device one (31) and the edge suction device two (32) are respectively connected to the ladder screw (331) on both sides.

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