Switching plectrum structure of needle bar switching mechanism of double-needle sewing machine

Abstract

The utility model relates to the technical field of sewing machines, in particular to a shifting piece switching structure of a needle bar switching mechanism of a double-needle sewing machine, which comprises a shifting piece structure and a mounting seat for mounting the shifting piece structure, a closed mounting groove is arranged at the upper end of the mounting seat, and a sliding groove is arranged on one side inside the closed mounting groove. The shifting piece structure is installed in the combined installation groove in a matched mode, a driving piece is installed on the back face of the installation base, and the driving piece is in butt joint with one end of the shifting piece structure in a matched mode to drive the shifting piece structure to slide and shift in the combined installation groove. The shifting piece main body shifts towards the inner side, and the end part of the shifting piece main body is always positioned in the mounting groove during shifting, so that the phenomenon that the currently used shifting piece collides with external parts during driving is avoided, the use stability of the shifting piece main body is ensured, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a switching paddle structure of a needle bar switching mechanism of a double-needle sewing machine. Background Art

[0002] The movable pin in the existing sewing machine can only separate a single needle bar at a time, thereby forming a single-double needle switch, and it is impossible to perform double needle skipping at the same time, so that the two needles stop at the same time. In view of this, the applicant has developed a double needle sewing machine needle bar switching mechanism with a skipping stitch function, with the patent number "CN215593387U". It drives the piston rod to extend and retract through a piston pump, thereby driving the double-headed movable pin to slide in the slide groove on the surface of the mounting seat through a connecting rod to correspond to the upper end of the driving arm. When the lock seat moves up, the upper end of the driving arm will contact the surface of the skipping needle pin head, thereby disengaging the lock seat from both needle bars, and the single skipping needle pin head can also be adjusted to contact the driving arm, so that the double needle skipping stitch mode, single needle working mode and double needle working mode can be switched at will. However, during use, the inventor found that since the drive of the paddle is driven from left to right by the piston pump, the end of the paddle will collide with the components on the outside of the mounting seat, and the components are easily damaged under long-term use, affecting the service life of the components.

[0003] Therefore, a switching paddle structure of a needle bar switching mechanism of a double-needle sewing machine is needed to improve the above-mentioned problem. Utility Model Content

[0004] The utility model aims to provide a switching paddle structure of a needle bar switching mechanism of a double-needle sewing machine to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A switching paddle structure of a needle bar switching mechanism of a double-needle sewing machine comprises a paddle structure and a mounting seat for mounting the paddle structure, an upper end portion of the mounting seat is provided with a mounting groove, an inner side of the mounting groove is provided with a sliding groove, the paddle structure is mounted in cooperation inside the mounting groove, a driving member is mounted on the back side of the mounting seat, the driving member cooperates with one end of the paddle structure to drive it to slide and toggle inside the mounting groove, the paddle structure moves left and right along the radial direction of the mounting groove under the drive of the driving member, and during the movement, the end of the paddle structure is always located inside the mounting groove to avoid collision with parts on the right side of the mounting seat.

[0007] As a preferred solution of the utility model, the paddle structure includes a paddle body, one end of which is provided with a docking protrusion, the docking protrusion is provided with a driving docking groove for docking with the driving member, and the other end of the paddle body is provided with a plurality of jumper pins.

[0008] As a preferred solution of the utility model, the back side of the paddle body is provided with a convex end that cooperates with the slide groove.

[0009] As a preferred solution of the utility model, the convex end is a sliding block, and the sliding block is in the shape of a waist hole.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] Compared with the paddles currently used, the paddle structure adopted by the utility model is that when the needle bar is switched under the drive of the driving member, the paddle body is pushed inward and the end of the paddle body is always located inside the mounting groove during the movement, thereby avoiding the paddle currently used from colliding with external parts during driving, ensuring the stable use of the paddle body and increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of a plectrum in the prior art;

[0013] Figure 2 This is a schematic diagram of the installation of the paddle structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the paddle structure in the utility model.

[0015] In the figure: a mounting seat 1, a paddle structure 2, a driving docking groove 21, a jumper pin head 22, a paddle body 23, a sliding block 24, and a mounting groove 3. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant. Several embodiments of the utility model are given. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] See also Figure 2-3 , the utility model provides a technical solution:

[0021] For example, please refer to Figure 2 and 3 A switching paddle structure of a needle bar switching mechanism of a double-needle sewing machine comprises a paddle structure 2 and a mounting seat 1 for mounting the paddle structure 2. A mounting groove 3 is provided on the upper end of the mounting seat 1, and a sliding groove is provided on one side of the inner side of the mounting groove 3. The paddle structure 2 is mounted in the inner side of the mounting groove 3. A driving member is mounted on the back side of the mounting seat 1. The driving member cooperates with one end of the paddle structure 2 to drive it to slide and toggle in the inner side of the mounting groove 3. The paddle structure 2 moves left and right along the radial direction of the mounting groove 3 under the drive of the driving member. During the movement, the end of the paddle structure 2 is always located in the inner side of the mounting groove 3 to avoid collision with parts on the right side of the mounting seat 1.

[0022] The paddle structure 2 moves radially left and right along the mounting groove 3 driven by the driving member. During the movement, the end of the paddle structure 2 always moves inside the mounting groove 3, and its end does not extend to the outside of the mounting groove 3, thereby avoiding collision with external parts.

[0023] Please refer to Figure 2 and 3 The paddle structure 2 includes a paddle body 23, one end of which is provided with a docking protrusion, and the docking protrusion is provided with a driving docking groove 21 for docking with the driving member, and the other end of the paddle body 23 is provided with a plurality of jumper pins 22, and the back of the paddle body 23 is provided with a convex end for docking with the slide groove, and the convex end is a sliding block 24, and the sliding block 24 is in the shape of a waist hole.

[0024] The length of the paddle body 23 is shorter than that of the paddle currently used. When it is turned, it is driven by the driving member to turn inward, and moves to the left in the figure. The position of the jump needle pin 22 is changed accordingly and docked with the end of the needle bar to switch the needle bar. The sliding block 24 is waist-shaped. Compared with the existing cylindrical sliding block 24, it has a smaller gap when it is matched inside the slide groove, and the movement is more stable when it is turned.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A switching paddle structure of a needle bar switching mechanism of a double-needle sewing machine, comprising a paddle structure (2) and a mounting seat (1) for mounting the paddle structure (2), wherein the upper end of the mounting seat (1) is provided with a mounting groove (3), and a sliding groove is provided on one side of the inner side of the mounting groove (3), wherein the paddle structure (2) is mounted in the inner side of the mounting groove (3), and a driving member is mounted on the back side of the mounting seat (1), and the driving member is coupled with one end of the paddle structure (2) to drive the paddle structure (2) to slide and toggle in the inner side of the mounting groove (3), wherein: The paddle structure (2) moves radially left and right along the mounting groove (3) under the drive of the driving member. During the movement, the end of the paddle structure (2) is always located inside the mounting groove (3) to avoid collision with parts on the right side of the mounting seat (1).

2. The switching paddle structure of the needle bar switching mechanism of a double-needle sewing machine according to claim 1, characterized in that: The paddle structure (2) comprises a paddle body (23), one end of which is provided with a docking protrusion, the docking protrusion is provided with a driving docking groove (21) for docking with a driving member, and the other end of the paddle body (23) is provided with a plurality of jump pins (22).

3. The switching paddle structure of the needle bar switching mechanism of a double-needle sewing machine according to claim 2, characterized in that: The back side of the plectrum body (23) is provided with a convex end that cooperates with the slide groove.

4. The switching paddle structure of the needle bar switching mechanism of a double-needle sewing machine according to claim 3, characterized in that: The convex end is a sliding block (24), and the sliding block (24) is in the shape of a waist hole.

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