Roller type deviation rectifying feeding device of longitudinal sewing machine

Abstract

The utility model discloses a longitudinal sewing machine roller type deviation rectifying feeding device which is installed on a high-position machine frame at the rear end of a longitudinal sewing machine and comprises a cloth guide roller, a cloth feeding roller driven by a motor to rotate and a deviation rectifying mechanism, the deviation rectifying mechanism comprises a roller set, a transmission rod, a linear module and a photoelectric sensor, and all rollers of the roller set are movably installed on a bottom plate through a support in a row mode. The rolling wheel set is transversely arranged above the tail end of the rack, the transmission rod and the linear module are arranged at the upper position and the lower position in front of the rolling wheel set in the same direction, a support of each rolling wheel is movably connected to the transmission rod through a connecting rod, the connecting rods below the adjacent rolling wheel supports, the bottom plate and the transmission rod define a parallelogram with four rotatable points, and a long groove hole is formed in a sliding block of the linear module. The bottom end of an inserting column fixedly arranged on the transmission rod is movably inserted into the long groove hole of the sliding block, and the photoelectric sensor is arranged above the longitudinal edge of the to-be-sewn cloth on the front cloth feeding path. According to the cloth feeding device, the cloth edge position is monitored through the swinging roller set and the photoelectric sensor, the roller set adjusts the angle to rectify deviation when deviation is found, the control precision is high, and cloth feeding does not deviate.

Description

Technical Field

[0001] The utility model relates to the field of longitudinal seam machine equipment, in particular to a roller-type deviation-correcting feeding device of a longitudinal seam machine. Background Art

[0002] The cloth feeding end of the longitudinal sewing machine uses the cloth guide roller and the cloth feed roller driven by the motor to pull the cloth to be sewn into the folding device and sewing device of the equipment for operation. In order to prevent the cloth from deflecting during movement, a correction device will be set for adjustment during the cloth feeding process. Generally, an electric push rod pushes the cloth guide roller to change the angle for correction, such as the automatic correction device in the patent name "Towel Longitudinal Edge Single Head Automatic Longitudinal Sewing Machine" (Announcement No.: CN209353050U) that the applicant previously applied for and obtained authorization. However, the correction accuracy of this structure is not accurate enough and needs to be improved. Utility Model Content

[0003] In response to the problems existing in the prior art, the utility model provides a roller-type deviation-correcting feeding device for a longitudinal sewing machine. A photoelectric sensor monitors the position of the incoming fabric edge, and the roller group is controlled to adjust the angle to adjust the longitudinal edge of the fabric to be sewn to a predetermined position with accurate precision.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The roller-type deviation correction feeding device of the longitudinal seam machine is installed on the high-position frame at the rear end of the longitudinal seam machine, and includes a cloth guide roller, a cloth feed roller driven by a motor, and a deviation correction mechanism. The deviation correction mechanism includes a roller group, a transmission rod, a linear module and a photoelectric sensor. The rollers of the roller group are movably arranged on the bottom plate through supports and are horizontally arranged above the rear end of the frame. The transmission rod and the linear module are arranged in the same direction in the upper and lower positions in front of the roller group. The supports of each roller are movably connected to the transmission rod through connecting rods. The connecting rods, bottom plate and transmission rods under adjacent roller supports form a four-point rotatable parallelogram. A long slot is opened on the slider of the linear module, and the bottom end of the plug column fixed on the transmission rod is movably inserted in the long slot hole of the slider. The photoelectric sensor is arranged above the longitudinal edge of the cloth to be sewn on the front cloth feeding path.

[0006] A further improvement is that the support of the roller is connected to the base plate through a bearing, and the connecting rod is connected to the transmission rod through a bearing, so that the rotation adjustment is more flexible.

[0007] A further improvement is that the two photoelectric sensors are spaced so that a longitudinal edge of the cloth to be sewn is located below the gap between the two photoelectric sensors. It is normal for the cloth edge to pass between the two photoelectric sensors, and if it exceeds one side, corresponding adjustments are made.

[0008] A further improvement is that a long baffle is provided on the rear side of the roller assembly, with the top edge of the baffle being lower than the top surface of the roller, so as to facilitate the fabric to be laid flat when passing through the roller.

[0009] A further improvement is to provide a U-shaped baffle on the front side of the linear module that semi-encloses the slider and the slide rail for protection.

[0010] A further improvement is to include a tension adjustment mechanism, which includes two parallel tension rollers connected at both ends to form a rectangular frame, and an electric push rod connected at the midpoint of the end plates. The tension is automatically adjusted to keep the feed in a tensioned state. Beneficial effects

[0011] The device feeds the cloth through a swingable roller group, and the photoelectric sensor monitors the position of the cloth edge. When deviation is found, the roller group adjusts the angle to correct the deviation. The control accuracy is high and the cloth feeding does not deviate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of a longitudinal seam machine;

[0013] Figure 2 It is a partially enlarged schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] like Figure 1 、 Figure 2 As shown, the roller-type deviation correction feeding device of the longitudinal seam machine of the present invention is installed on the high-position frame 1 at the rear end of the longitudinal seam machine, and includes a cloth guide roller 2, a cloth feed roller 4 driven by a motor 3, and a deviation correction mechanism 5. The deviation correction mechanism 5 includes a roller group 51, a transmission rod 52, a linear module 53 and a photoelectric sensor 54. The rollers of the roller group 51 are movably arranged on the bottom plate 56 through a support 55 and are horizontally arranged above the rear end of the frame 1. The transmission rod 52 and the linear module 53 are arranged in the same direction in front of the roller group 51. Position, the supports 55 of each roller are movably connected to the transmission rod 52 through the connecting rod 57, the connecting rod 57 under the adjacent roller supports, the base plate 56 and the transmission rod 52 form a parallelogram that can rotate at four points, the slider of the linear module 53 is provided with a long slot 531, and the bottom end of the plug post 58 fixed on the transmission rod 52 is movably inserted into the long slot 531 of the slider, the two photoelectric sensors 54 are arranged above the front cloth feeding path, and a longitudinal edge of the cloth to be sewn is located below and between the two photoelectric sensors.

[0015] The support 55 of the roller is connected to the base plate 56 through a bearing, and the connecting rod 57 is connected to the transmission rod 52 through a bearing.

[0016] A long baffle 50 is provided at the rear side of the roller assembly 51 , and the top edge of the baffle is lower than the top surface of the roller.

[0017] A U-shaped baffle 59 is provided on the front side of the linear module 53 to semi-enclose the slider and the slide rail.

[0018] The device further comprises a tension regulating mechanism 6 , which comprises two parallel tension rollers 61 , both ends of which are connected to end plates 62 to form a rectangular frame, and the midpoints of the two end plates 62 are connected to an electric push rod 63 .

[0019] The long towel cloth moves upward from the roller group 51 to the cloth feed roller 4, passes under the photoelectric sensor 54, bypasses the cloth feed roller 4, and returns to the cloth guide roller 2 on the frame and the tension roller 61 on the tension adjustment mechanism 6. It then moves upward from the bottom of the longitudinal sewing machine pedal to the folding device and sewing device before being discharged.

[0020] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A roller-type deviation-correcting feeding device for a longitudinal seam machine, mounted on a high-position frame (1) at the rear end of the longitudinal seam machine, comprising a cloth guide roller (2), a cloth feed roller (4) driven by a motor (3), and a deviation-correcting mechanism (5), characterized in that: The correction mechanism (5) comprises a roller group (51), a transmission rod (52), a linear module (53) and a photoelectric sensor (54). The rollers of the roller group (51) are movably arranged on the bottom plate (56) through a support (55) and are horizontally arranged above the tail end of the frame (1). The transmission rod (52) and the linear module (53) are arranged in the same direction at the upper and lower positions in front of the roller group (51). The supports (55) of each roller are movably connected to the transmission rod (52) through a connecting rod (57). The connecting rods (57) under the adjacent roller supports, the bottom plate (56) and the transmission rod (52) form a parallelogram with four points of rotation. A long slot hole (531) is opened on the slider of the linear module (53). The bottom end of the plug column (58) fixed on the transmission rod (52) is movably inserted into the long slot hole (531) of the slider. The photoelectric sensor (54) is arranged above the longitudinal edge of the cloth to be sewn on the front cloth feeding path.

2. The roller-type deviation-correcting feeding device for a longitudinal seam machine according to claim 1 is characterized in that: The support (55) of the roller is connected to the base plate (56) through a bearing, and the connecting rod (57) is connected to the transmission rod (52) through a bearing.

3. The roller-type deviation-correcting feeding device for a longitudinal seam machine according to claim 1 is characterized in that: The two photoelectric sensors (54) are spaced apart, and a longitudinal edge of the cloth to be sewn is located below between the two photoelectric sensors.

4. The roller-type deviation-correcting feeding device for a longitudinal seam machine according to claim 1, characterized in that: A long baffle (50) is provided on the rear side of the roller assembly (51), and the top edge of the baffle is lower than the top surface of the roller.

5. The roller-type deviation-correcting feeding device for a longitudinal seam machine according to claim 1 is characterized in that: A U-shaped baffle (59) is provided on the front side of the linear module (53) and semi-encloses the slider and the slide rail.

6. The roller-type deviation-correcting feeding device for a longitudinal seam machine according to claim 1, characterized in that ; It also includes a tension adjustment mechanism (6), wherein the tension adjustment mechanism (6) includes two parallel tension rollers (61) whose ends are connected to end plates (62) to form a rectangular frame, and the midpoints of the two end plates (62) are connected to an electric push rod (63).

Images