Twin-needle machine binding off mechanism

[0012] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to make a clearer and clearer definition of the protection scope of the present invention.

[0013] See attached figure 1 , The embodiment of the present invention includes:

[0014] A double-needle car overlocking mechanism includes a pair of double-needle car 1, a sliding track 2, a carrier, a belt 3 and a synchronous transmission assembly 4 fixed on the carrier. A pair of double-needle carriages 1 are both sleeved on the sliding track 2 to perform bilateral over stitching on the fabric passing between the two. Each double-needle carriage 1 can slide on the sliding track 2 relatively. A carrier is fixed at the machine head of the double needle car 1, because the carrier is used to assist crochet stitches to sew cloth, so the carrier is arranged on the double needle car 1 near the end of the crochet needle. The carrier includes a material carrier 5 and a fixing frame 6; the height of the material carrier is the same as the sewing height of the double needle car 1, so that it can be used to sew the fabric; while the fixing frame 6 is vertically connected to the material carrier 5 Above, the side of the fixing frame 6 is fixedly connected with the double needle car 1. A plurality of belt guide wheels 7 are provided on the fixed frame 6. The position of the belt guide wheels 7 is reasonably arranged according to the proper tightness of the belt 3; the belt 3 is fitted on the belt guide wheel 7 and is located near the bottom of the fixed frame The belt guide wheel 7 rolls the belt 3 on the surface of the carrier plate 5, so that the purpose of rolling and conveying can be achieved when the cloth passes. The fixed frame 6 is also provided with an auxiliary belt guide wheel 7 to roll the belt 3 with an auxiliary wheel 8, so that the conveying capacity of the belt can be guaranteed and the quality of rolling can be improved.

[0015] The synchronous transmission assembly 4 fixed on the fixed frame 6 is used for the synchronous transmission of the belt 3 and includes a motor 9, a rotating shaft 10 and a pulley 11. The rotating shaft 10 is fixed on the fixing frame 6 through a sleeve. The rotating shaft 10 passes through the fixing frames 6 on the two double-needle carriages 1 at the same time. The rotating shaft 10 simultaneously drives a pair of belts 3 on the double-needle carriage 1 for synchronous rolling of cloth. Since the shaft sleeve and the rotating shaft are in a sliding fit, from the perspective of the overall structure, when the double needle car 1 slides freely on the sliding track 2, the fixing frame 6 can slide along the rotating shaft 10 without affecting the belt 3 The transmission. A pulley 11 is also connected to the rotating shaft 10, and the pulley 11 is also connected to the fixing frame 6. The pulley 11 and the rotating shaft 10 are fixed by selective limit, that is, the pulley can be fitted on the rotating shaft 10 at any time as needed. In this way, the pulley 11 has flexible sliding properties; the pulley 11 drives the belt 3 to roll around the belt guide wheel 7, and one end of the rotating shaft 10 is connected to the motor 9 to drive the overall structure.

[0016] Similar to the general double needle car, the double needle car in this solution also includes a crochet hook, a needle plate, a presser foot and a cutter; the material carrier 5 is fixed horizontally under the crochet needle, and the needle plates are all embedded in the material carrier 5 Up; the cutter is located on the inside of the crochet hook to cut the thread of the suture. A sliding block 12 is also provided at the bottom of the double needle car 1, and the sliding block is sleeved on the sliding track 2. The bottom of the double needle car 1 is also provided with a limit component 13 which includes an open lock sleeve and a switch handle; the open lock sleeve is jacketed on the sliding track 2, and the open lock sleeve is also fixed on the bottom of the double needle car 1.

[0017] When the whole mechanism is working, the leather belt driven by the motor is used to roll the fabric to ensure that the fabric is continuously overwritten; when it is found that the double-needle machine needs to be adjusted in position, move the double-needle car to the required position and pass the limit. The position is locked by the bit component, the whole structure is simple and effective, and easy to maintain and repair.

[0018] The above are only the embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the present invention description, or directly or indirectly applied to other related technical fields, are all The same reason is included in the scope of patent protection of the present invention.