Deviation-rectifying cloth feeding device of lockstitch sewing machine

Abstract

The utility model relates to the technical field of lockstitch sewing machines, in particular to a deviation-rectifying cloth feeding device of a lockstitch sewing machine, and aims to solve the technical problem that sewing products are wrinkled or uneven in thickness due to dislocation of all layers of cloth in the cloth feeding process. Comprising a platform, a machine head, cloth, a photoelectric sensor assembly, a displacement mechanism, a deviation rectifying mechanism, a core rod, a spherical block, a deviation rectifying wheel, a ball groove, a first ball head rod, a sliding rod, a fixed plate, an air cylinder, a rubber roller, a bearing seat, a first motor, a second ball head rod and an adjusting mechanism. The photoelectric sensor sends an abnormal light signal to the controller, the controller controls the deviation rectifying wheel to obliquely rotate to straighten the cloth and then reset, in this way, automatic deviation rectifying is achieved, and the problem that in the cloth feeding process, dislocation of all layers of cloth occurs, and consequently a sewn product is wrinkled or uneven in thickness is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flat bed sewing machine, and specifically to a flat bed sewing machine deviation-correcting cloth feeding device. BACKGROUND

[0002] In the early sewing process, there is no complex deviation-correcting cloth feeding device. When sewing with a flat bed sewing machine, the cloth feeding is mainly realized by the simple pushing of the feeding teeth and the fixing of the presser foot. However, this way will expose many problems when dealing with some sewing tasks of special texture, complex shape or multi-layer cloth.

[0003] For example, for light and soft cloth like silk and gauze, the feeding teeth are easy to cause the cloth to shift during the pushing process. Because the movement of the feeding teeth is mechanical and rhythmic, and these cloths are too soft to follow the rhythm of the feeding teeth well, they are easy to deviate left and right or accumulate, affecting the sewing quality.

[0004] For multi-layer cloth sewing, the traditional cloth feeding method is difficult to ensure that each layer of cloth can be synchronized and accurately fed. Due to factors such as differences in friction between different layers of cloth, it is likely that the layers of cloth will be misaligned during the feeding process, resulting in wrinkles or uneven thickness of the sewn product. SUMMARY

[0005] The utility model provides a flat bed sewing machine deviation-correcting cloth feeding device to solve the technical problem of misalignment between layers of cloth during cloth feeding, which leads to wrinkles or uneven thickness of the sewn product.

[0006] To achieve the above object, the utility model provides the following technical scheme: A flat -bed sewing machine can send cloth device of rectifying deviation, include: The platform, the platform upper surface is connected with the machine head, the two cloth's suture is located in the lower part of the machine head, cloth side edge is equipped with photoelectric sensor component, photoelectric sensor component is displaced on the platform through displacement mechanism and is locked, displacement mechanism is located on the platform, the rear part of the machine head along the cloth conveying direction is equipped with rectifying deviation mechanism, rectifying deviation mechanism includes core rod, core rod is locked through adjusting mechanism on the platform vertical lifting, core rod is connected with spherical block, the outer spherical surface of spherical block is rotatably connected with rectifying deviation wheel, one side surface of rectifying deviation wheel is equipped with ball groove, the ball head part of ball head rod one is slidably connected in ball groove, ball head rod one is located in rectifying deviation wheel one side, the axis of ball head rod one and the axis of rectifying deviation wheel form plane and parallel with the platform, ball head rod one is connected with slide bar through the radial limit telescopic link, slide bar is slidably connected in fixed plate, fixed plate is connected with core rod, fixed plate and slide bar are connected through air cylinder, the outer surface upper end of rectifying deviation wheel and rubber roller contact, rubber roller is rotatably connected in bearing seat, bearing seat is connected on core rod, motor one is connected on bearing seat, motor one output and rubber roller are connected, photoelectric sensor component can change the light signal received into electric signal and send to controller, controller can control air cylinder start and stop, the upper end in ball groove is slidably connected with ball head rod two, ball head rod two is connected in spherical block.

[0007] Preferably, the displacement mechanism includes a sliding groove, the sliding groove is provided with two sliding grooves each provided on the platform, a corresponding threaded shaft is arranged in each sliding groove, the threaded shaft is rotatably connected to the platform, the photoelectric sensor component includes a sensor support and a photoelectric sensor, the sensor support is threadedly connected to the threaded shaft, the sensor support is slidably connected to the sliding groove, the photoelectric sensor is connected to the sensor support, and the photoelectric sensor is located above the edge of the cloth.

[0008] Preferably, the adjusting mechanism includes a core rod carriage connected to the platform, the core rod is slidably connected to the core rod carriage, the core rod is threadedly connected to the adjusting threaded rod, the adjusting threaded rod is rotatably connected to the core rod carriage, the core rod carriage is connected to the motor two, and the motor two is connected to the core rod carriage.

[0009] Preferably, the platform is connected with an alarm, and the controller can control the alarm to start.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] When used conventionally, the rectifying deviation wheel assists the feeding teeth to convey and stitch the cloth flat, when the cloth is inclined, the photoelectric sensor sends an abnormal light signal to the controller, the controller controls the rectifying deviation wheel to tilt and rotate to correct the cloth, thereby realizing automatic rectification, solving the problem of misalignment between the layers of cloth during the feeding process, and causing wrinkles or uneven thickness of the sewn product.

[0012] When the number of correction is too much in a short time, the controller controls the alarm to start, reports the abnormality to the operator, and prevents the cloth damage caused by the machine failure. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Structure diagram of the present application Figure 1 ;

[0014] Figure 2 Structure diagram of the present application Figure 2 ;

[0015] Figure 3 Structure diagram of the present application Figure 3 ;

[0016] Figure 4 Structure diagram of the present application

[0017] In the figure: platform 1; machine head 2; cloth 3; photoelectric sensor assembly 4; sensor support 41; photoelectric sensor 42; displacement mechanism 5; sliding groove 51; threaded shaft 52; correction mechanism 6; core rod 61; spherical block 62; correction wheel 63; ball groove 64; ball head rod one 65; sliding rod 66; fixed plate 67; air cylinder 68; rubber roller 69; bearing seat 610; motor one 611; ball head rod two 612; adjusting mechanism 7; core rod sliding frame 71; adjusting threaded rod 72; motor two 73. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0019] The rotary connection in the device refers to the rotary connection by clamping the bearing on the shaft, and the spring retainer groove is arranged on the shaft or the shaft hole, the axial fixation of the bearing is realized by clamping the elastic retainer in the retainer groove, and the rotary connection is realized; the articulated connection refers to the movable connection mode of the connecting parts such as hinges, pins and short shafts.

[0020] The present application will be described in detail below with reference to the drawings. EMBODIMENT

[0021] The present application will be described in detail below with reference to the drawings. Figures 1-4The embodiment is a kind of flat sewing machine can rectify cloth feeding device, including: platform 1, platform 1 upper surface is connected with machine head 2, the sewing place of two cloths 3 is located in the lower part of machine head 2, the side edge of cloth 3 is equipped with photoelectric sensor assembly 4, photoelectric sensor assembly 4 is displaced and locked on platform 1 by displacement mechanism 5, displacement mechanism 5 is arranged on platform, the rear part of machine head 2 along the conveying direction of cloth 3 is equipped with rectification mechanism 6, rectification mechanism 6 includes core rod 61, core rod 61 is vertically lifted and locked on platform 1 by adjusting mechanism 7, core rod 61 is connected with spherical block 62, the outer spherical surface of spherical block 62 is rotatably connected with rectification wheel 63, one side surface of rectification wheel 63 is provided with ball groove 64, the ball head part of ball head rod one 65 is slidably connected in ball groove 64, ball head rod one 65 is located at one side of rectification wheel 63, the plane formed by the axis of ball head rod one 65 and the axis of rectification wheel 63 is parallel to platform 1, ball head rod one 65 is connected with sliding rod 66 through radially limited telescopic rod, sliding rod 66 is slidably connected in fixed plate 67, fixed plate 67 is connected with core rod 61, fixed plate 67 and sliding rod 66 are connected through air cylinder 68, the upper end of the outer surface of rectification wheel 63 is in contact with rubber roller 69, rubber roller 69 is rotatably connected in bearing seat 610, bearing seat 610 is connected on core rod 61, motor one 611 is connected on bearing seat 610, the output end of motor one 611 is connected with rubber roller 69, photoelectric sensor assembly 4 can convert the received optical signal into electrical signal and send to controller, controller can control air cylinder 68 to start and stop, ball groove 64 upper end is slidably connected with ball head rod two 612, ball head rod two 612 is connected in spherical block 62.

[0022] When used conventionally, adjust photoelectric sensor assembly 4 to the edge of cloth 3 through displacement mechanism 5, start motor one 611, motor one 611 drives rubber roller 69 to rotate, rubber roller 69 drives rectification wheel 63 to rotate through friction, rectification wheel 63 assists feeding teeth to straightly convey and sew cloth, when cloth 3 is inclined, photoelectric sensor sends abnormal optical signal to controller, controller controls air cylinder 68 to drive sliding rod 66 to displace, sliding rod 66 drives rectification wheel 63 to incline along the surface of spherical block 62 through telescopic rod, ball head rod one 65 and ball groove 64 cooperation, ball head rod two 612 is positioned in the upper part of ball groove 64, so that the upper end of rectification wheel 63 is always in contact with rubber roller 69 to make transmission not disconnected, rectification wheel 63 inclines and rotates to correct cloth, and then resets, so as to realize automatic rectification, solve the misplacement between each layer of cloth during cloth feeding, and the problem that the sewing product appears wrinkle or uneven thickness.

[0023] The displacement mechanism 5 comprises two sliding grooves 51, each of which is arranged on the platform 1, and each of the sliding grooves 51 is provided with a corresponding threaded shaft 52, the threaded shaft 52 is rotationally connected in the platform 1, the photoelectric sensor assembly 4 comprises a sensor bracket 41 and a photoelectric sensor 42, the threaded shaft 52 is threadedly connected with the sensor bracket 41, the sensor bracket 41 is slidingly connected in the sliding groove 51, and the photoelectric sensor 42 is connected to the sensor bracket 41, and the photoelectric sensor 42 is located above the edge of the cloth 3.

[0024] During adjustment, the threaded shaft 52 is rotated, the threaded shaft 52 drives the sensor bracket 41 to slide along the sliding groove 51, the position of the photoelectric sensor 42 is adjusted, and the edge of the cloth 3 is reached.

[0025] The adjustment mechanism 7 comprises a core rod slide 71 connected to the platform 1, the core rod slide 71 is vertically slidingly connected with a core rod 61, the core rod 61 is threadedly connected with an adjustment threaded rod 72, the adjustment threaded rod 72 is rotationally connected in the core rod slide 71, the core rod slide 71 is connected with a second motor 73, and the second motor 73 is connected to the core rod slide 71.

[0026] During adjustment, the second motor 73 drives the adjustment threaded rod 72 to rotate, the adjustment threaded rod 72 drives the core rod 61 to vertically ascend along the core rod slide 71, and adjustment is completed, so that cloth of different thicknesses can be sewn.

[0027] The platform 1 is connected with an alarm, and the controller can control the alarm to start.

[0028] The controller is provided with a timer and a deviation correction counter, when the number of deviation corrections in a short time is too large, the controller controls the alarm to start, reports the abnormality to the operator, and prevents cloth damage caused by machine failure.

[0029] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art. The machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0031] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A fabric feeding device for a flat sewing machine with corrective properties, comprising: Platform (1), the upper surface of platform (1) is connected to machine head (2), the sewing joint of the two fabrics (3) is located at the lower part of machine head (2), the side edge of fabric (3) is provided with photoelectric sensor assembly (4), the photoelectric sensor assembly (4) is horizontally displaced and locked on platform (1) by displacement mechanism (5), displacement mechanism (5) is set on platform, The feature is that: a correction mechanism (6) is provided at the rear of the machine head (2) along the conveying direction of the cloth (3). The correction mechanism (6) includes a core rod (61). The core rod (61) is vertically raised and lowered and locked on the platform (1) by an adjustment mechanism (7). The core rod (61) is connected to a spherical block (62). A correction wheel (63) is rotatably connected to the outer spherical surface of the spherical block (62). A ball groove (64) is opened on one side of the correction wheel (63). The ball head part of a ball head rod (65) is slidably connected in the ball groove (64). The ball head rod (65) is located on one side of the correction wheel (63). The plane formed by the axis of the ball head rod (65) and the axis of the correction wheel (63) is parallel to the platform (1). The ball head rod (65) is connected to a sliding rod (66) through a radially limiting telescopic rod. The fixed plate (67) is slidably connected to the fixed plate (67), which is connected to the core rod (61). The fixed plate (67) and the slide rod (66) are connected by the cylinder (68). The upper end of the outer surface of the correction wheel (63) is in contact with the rubber roller (69). The rubber roller (69) is rotatably connected to the bearing seat (610), which is connected to the core rod (61). The first motor (611) is connected to the bearing seat (610), and the output end of the first motor (611) is connected to the rubber roller (69). The photoelectric sensor assembly (4) can convert the received light signal into an electrical signal and send it to the controller. The controller can control the cylinder (68) to start and stop. The ball head rod (612) is slidably connected to the upper end of the ball groove (64), and the ball head rod (612) is connected to the spherical block (62).

2. The fabric feeding device for a flat sewing machine with corrective properties according to claim 1, characterized in that: The displacement mechanism (5) includes a slide (51), two slides (51) are provided on the platform (1), and each slide (51) is provided with a corresponding threaded shaft (52). The threaded shaft (52) is rotatably connected to the platform (1). The photoelectric sensor assembly (4) includes a sensor bracket (41) and a photoelectric sensor (42). The sensor bracket (41) is threadedly connected to the threaded shaft (52). The sensor bracket (41) is slidably connected to the slide (51). The photoelectric sensor (42) is connected to the sensor bracket (41). The photoelectric sensor (42) is located above the edge of the cloth (3).

3. The fabric feeding device for a flat sewing machine with corrective properties according to claim 1, characterized in that: The adjustment mechanism (7) includes a core rod slide (71), which is connected to the platform (1). A core rod (61) is vertically slidably connected inside the core rod slide (71). The core rod (61) is threadedly connected to the adjusting threaded rod (72). The adjusting threaded rod (72) is rotatably connected inside the core rod slide (71). The core rod slide (71) is connected to the second motor (73), which is connected to the core rod slide (71).

4. The fabric feeding device for a flat sewing machine with corrective properties according to claim 1, characterized in that: An alarm is connected to the platform (1), and the controller can control the alarm to start.

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