Edge covering device and sewing machine

Abstract

The utility model provides an edge covering device which comprises an edge covering cylinder, a mounting frame used for mounting the edge covering cylinder and a driving structure which drives the edge covering cylinder to swing and is matched with feeding teeth for feeding, and the driving structure comprises a driving motor and a transmission assembly arranged between the driving motor and the mounting frame. According to the edge covering device, the edge covering cylinder is driven to swing in a reciprocating mode, the edge covering flatness can be improved, wrinkles can be reduced, the feeding amount of edge covering strips is increased, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing technical field especially a kind of overlock device and sewing machine. BACKGROUND

[0002] At present, in clothing processing industry, the edge of clothing usually is handled by overlock, generally set overlock cylinder near needle bar, to assist overlock, overlock cylinder in prior art is generally fixedly installed on sewing machine by connecting plate. However, many overlock strips are generally elastic, in the process of feeding tooth feeding sewing, wrinkle is prone to, and fixedly installed overlock cylinder cannot move, cannot change the feeding amount of overlock strip. CONTENT OF UTILITY MODEL

[0003] In order to solve the problems of the prior art, the utility model provides an overlock device, overlock cylinder is swung by motor drive, the feeding amount of overlock strip can be changed, and the flatness when overlock strip overlock is improved.

[0004] The technical scheme adopted is as follows:

[0005] An overlock device, comprising an overlock cylinder, a mounting frame for mounting the overlock cylinder, and a drive structure for driving the overlock cylinder to swing and cooperating with the feeding tooth for feeding, the drive structure comprising a drive motor and a transmission assembly arranged between the drive motor and the mounting frame, and the mounting frame further comprising a swing rod arranged at one end thereof and cooperating with the overlock cylinder to swing.

[0006] Further, the drive motor is provided with a mounting plate at the lower end thereof for mounting, and the mounting plate is detachably connected to the sewing machine.

[0007] Further, the transmission assembly comprises a drive arm arranged on the output shaft of the drive motor and a transmission rod arranged between the drive arm and the mounting frame.

[0008] Further, one end of the swing rod is connected to the mounting frame, and the other end is rotatably arranged on the mounting plate.

[0009] Further, the first adjusting structure for adjusting the up-and-down movement of the overlock cylinder is arranged between the overlock cylinder and the mounting frame.

[0010] Further, the second adjusting structure for adjusting the length of the overlock cylinder extending relative to the swing rod is arranged between the mounting frame and the swing rod.

[0011] Further, the transmission assembly is adjustably arranged on the output shaft of the drive motor.

[0012] Further, the mounting plate is provided with a limiting plate for limiting the up-and-down movement of the mounting frame, and the limiting plate is arranged at the upper end of the mounting plate and forms a limiting groove with the mounting plate.

[0013] The utility model also provides a sewing machine, including the casing, lower bottom plate, be located on the needle plate seat of lower bottom plate still include the needle of needle plate seat upper end, be located on the feeding tooth of needle plate seat lower extreme and be located on the edge binding device of needle plate seat upper end, the edge binding device is above any one of the edge binding device. The needle plate seat is equipped with the through groove for the edge binding cylinder swing.

[0014] Compared with the prior art, the utility model discloses an edge binding device and sewing machine, including the edge binding cylinder of installing on the mounting bracket, the drive structure of drive mounting bracket to drive the edge binding cylinder swing, the edge binding cylinder and the swing of cooperation of feeding tooth, when not feeding tooth, the drive structure drives the edge binding cylinder swing to the direction of the feeding tooth of feeding of far, when swinging, the U type groove of edge binding cylinder can slip on the edge binding strip, can stretch the edge binding strip flat, improve the flatness of edge binding, reduce the wrinkle, when feeding tooth feeds to the feeding direction, the drive structure drives the edge binding cylinder swing to the feeding direction of the feeding tooth of close, with the direction of motion of feeding tooth, auxiliary feeding, increase the feeding amount of edge binding strip, improve the efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of sewing machine;

[0016] Figure 2 It is Figure 1 the enlarged view of a;

[0017] Figure 3 It is the structure schematic diagram of edge binding device;

[0018] Figure 4 、 5 It is the partial structure schematic diagram of edge binding device;

[0019] Figure 6 It is the schematic diagram of another installation mode of edge binding device mounting plate;

[0020] Among them, the edge binding cylinder 1, the mounting bracket 2, the drive structure 3, the drive motor 301, the transmission assembly 4, the transmission assembly 4, the drive arm 401, the transmission rod 402, the motor output shaft 403, the swing bar 5, the mounting plate 6, the first adjusting structure 7, the adjusting groove 701, the adjusting bolt 702, the second adjusting structure 8, the waist type groove 801, the fixed bolt 802, the casing 9, the lower bottom plate 10, the needle plate seat 11, the through groove 12, the limiting plate 13, the connecting plate 14. DETAILED DESCRIPTION

[0021] The utility model is further described in connection with specific embodiment.

[0022] Reference Figures 1-6 An edge covering device, comprising an edge covering cylinder 1, a mounting frame 2 for mounting the edge covering cylinder 1, and a driving structure 3 for driving the edge covering cylinder 1 to swing and cooperating with the feeding of the feeding teeth, the driving structure 3 comprising a driving motor 301 and a transmission assembly 4 arranged between the driving motor 301 and the mounting frame 2, and one end of the mounting frame 2 is further provided with a swing rod 5 cooperating with the swing of the edge covering cylinder 1.

[0023] The lower end of the driving motor 301 is provided with a mounting plate 6 for mounting, and the mounting plate 6 is detachably connected to the sewing machine. The detachable connection is convenient for mounting and dismounting. One end of the swing rod 5 is connected to the mounting frame 2, and the other end is rotatably arranged on the mounting plate 6.

[0024] The transmission assembly 4 comprises a driving arm 401 arranged on the output shaft 403 of the driving motor and a transmission rod 402 arranged between the driving arm 401 and the mounting frame 2. The driving motor 301 drives the driving arm 401 to swing, and drives the swing rod 5 to swing through the transmission rod 402. Since one end of the swing rod 5 is connected to the mounting frame 2, the swing rod 5 will drive the mounting frame 2 to swing when it swings, that is, drive the edge covering cylinder 1 arranged on the mounting frame 2 to swing left and right horizontally. The "horizontal" refers to the direction of movement when the fabric is covered, and the "left" refers to the direction of the feeding teeth feeding; "right" refers to the opposite direction of the feeding teeth feeding.

[0025] The driving motor 301 is arranged to electrically control the swing of the edge covering cylinder 1, which is more convenient and accurate. It can not only control the amplitude of the swing of the edge covering cylinder 1, but also control the speed of the swing of the edge covering cylinder 1.

[0026] The first adjusting structure 7 is arranged between the edge covering cylinder 1 and the mounting frame 2 to adjust the up and down movement of the edge covering cylinder 1. The first adjusting structure 7 comprises an adjusting groove 701 arranged on the mounting frame 2 and an adjusting bolt 702 arranged in the adjusting groove 701 for fixedly connecting the edge covering cylinder 1. By adjusting the height of the edge covering cylinder 1 through the sliding of the adjusting bolt in the adjusting groove 701, and finally fixed by the adjusting bolt 702. According to the thickness of the fabric, the up and down movement of the edge covering cylinder 1 can be adjusted to control the edge covering, so that the width of the upper and lower edge covering strips is close to uniform.

[0027] The second adjusting structure 8 is arranged between the mounting frame 2 and the swing rod 5, and is used to adjust the extension length of the adjustable hemming cylinder 1 relative to the swing rod 5. The second adjusting structure 8 comprises a waist-shaped groove 801 arranged on the swing rod 5 and a fixing bolt 802 arranged in the waist-shaped groove 801 and fixedly connected with the mounting frame 2. The fixing bolt 802 is provided with two fixing bolts, and the position of the mounting frame 2 is adjusted according to the need, and finally fixed by the fixing bolt 802. The transmission assembly 4 is arranged on the output shaft 403 of the driving motor. The transmission assembly 4 is arranged to be adjustable because one end of the transmission rod 402 arranged on the transmission assembly 4 is connected with the mounting frame 2, and when the position of the mounting frame 2 changes, the position of the transmission rod 402 also needs to be changed.

[0028] The mounting plate 6 is provided with a limiting plate 13 for limiting the up-down swing of the mounting frame 2, and the limiting plate is arranged on the upper end of the mounting plate and forms a limiting groove 14 with the mounting plate.

[0029] The utility model discloses still a kind of sewing machine, including shell 9, lower bottom plate 10, needle plate seat 11 being arranged on lower bottom plate, further including needle (not drawn on drawing) being arranged on the upper end of needle plate seat, feeding tooth (not drawn on drawing) being arranged on the lower end of needle plate seat 11 and hemming device being arranged on the upper end of needle plate seat, the hemming device is the hemming device described above. The needle plate seat 11 is provided with a through groove 12 for the hemming cylinder 1 to swing. The width of the through groove 12 is greater than the hemming cylinder 1, so that the hemming cylinder 1 can swing repeatedly in the through groove 12.

[0030] The hemming cylinder 1 can be completely used in the prior art, including a hemming cylinder for passing through the hemming strip, a U-shaped groove body for hemming is arranged at the front end of the hemming cylinder; the rear end is provided with a guide frame, "front end" refers to the end close to the needle plate seat, and "rear end" refers to the end away from the needle plate seat. The guide frame is a continuous S-shaped structure with the first end connected. The hemming strip passes out from the front end of the hemming cylinder through the guide frame, is hemmed through the U-shaped groove body, and is covered on the cloth to be hemmed. The cloth is arranged at the lower end of the presser foot, is fed by the feeding tooth and the presser foot, and is sewn by the needle bar to hem.

[0031] When the feeding tooth moves to the lower end of the needle plate seat 11 and is in the state of not feeding, the driving structure 3 drives the hemming cylinder 1 to swing to the right, the U-shaped groove body slides on the hemming strip, and the hemming cylinder 1 stretches the hemming strip, so that the hemming strip is more flatly covered on the cloth, and the wrinkles of the cloth are reduced; when the feeding tooth protrudes from the needle plate seat 11 and drives the cloth to move to the left, the driving structure 3 drives the hemming cylinder 1 to swing to the left at the same time, which can assist feeding, increase the feeding amount of the hemming strip, and improve the hemming efficiency. Repeat the above process to make the hemming cylinder swing back and forth, and cooperate with feeding. The feeding stroke of the feeding tooth and the elasticity of the hemming strip can be adjusted, and even the elasticity of the cloth can be combined to adjust the speed and amplitude of the driving motor driving the hemming cylinder to swing.

[0032] Further, the mounting plate 6 can be directly fixed and connected on the cabinet 9 by screws, such as Figure 6 or can be adjusted and arranged on the lower bottom plate 10 through the connecting plate 14, the connecting plate 14 is fixed on the lower bottom plate 10 or the cabinet 9, the connecting plate 14 is provided with a long slot, and a screw is arranged in the long slot and used for fixing. The connecting plate 14 is detachably connected with the mounting plate 6, and the position of the mounting plate 6 on the lower bottom plate 10 can be adjusted.

[0033] The above is only optional embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A covering device comprising a covering drum (1), a mounting frame (2) for mounting the covering drum (1), characterized in that: It also includes the drive structure (3) for driving the edge covering cylinder (1) to swing and cooperate with the feeding teeth to feed, the drive structure (3) includes a driving motor (301) and a transmission assembly (4) arranged between the driving motor (301) and the mounting frame (2), one end of the mounting frame (2) is further provided with a swing rod (5) for cooperating with the edge covering cylinder (1) to swing.

2. The taping device of claim 1, wherein: The lower end of the driving motor (301) is provided with a mounting plate (6) for mounting, and the mounting plate (6) is detachably connected to the sewing machine.

3. The taping device of claim 1, wherein: The transmission assembly (4) includes a driving arm (401) arranged on the driving motor output shaft (403) and a transmission rod (402) arranged between the driving arm (401) and the mounting frame (2).

4. The taping device of claim 2, wherein: One end of the swing rod (5) is connected to the mounting frame (2), and the other end is rotatably arranged on the mounting plate (6).

5. The taping device of claim 1, wherein: The first adjusting structure (7) is arranged between the edge covering cylinder (1) and the mounting frame (2) to adjust the up-down movement of the edge covering cylinder (1).

6. The taping device of claim 1, wherein: The second adjusting structure (8) is arranged between the mounting frame (2) and the swing rod (5) to adjust the extension length of the edge covering cylinder (1) relative to the swing rod (5).

7. The taping device of claim 3, wherein: The transmission assembly (4) can be adjusted on the driving motor output shaft (403).

8. The taping device of claim 2, wherein: The mounting plate (6) is provided with a limiting plate (13) for limiting the up-down swing of the mounting frame (2), and the limiting plate (13) is arranged on the upper end of the mounting plate (6) and forms a limiting groove (14) with the mounting plate (6).

9. A sewing machine comprising a machine housing (9), a lower bed (10), a needle plate (11) arranged on the lower bed, a needle arranged at the upper end of the needle plate, a feed dog arranged at the lower end of the needle plate (11) and a overlock device arranged at the upper end of the needle plate, characterized in that: The edge covering cylinder is the edge covering device according to any one of claims 1-7.

10. The sewing machine of claim 9, wherein: The needle plate seat (11) is provided with a through groove (12) for the swing of the edge covering cylinder (1).

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