Needle adjusting mechanism of sewing machine

Abstract

The utility model provides a sewing machine needle adjusting mechanism, which relates to the field of sewing machines and comprises a mounting column, the lower end of the mounting column is fixedly connected with a right-angle plate, the front end of the right-angle plate is symmetrically provided with two limiting pipes, sliding rods are slidably connected in the two limiting pipes, and the lower ends of the two sliding rods are fixedly connected with needle seats. Needle heads are arranged on the two needle seats; and the convenient adjusting mechanism comprises two top plates. According to the utility model, through the unique mechanical structure design, the convenient switching between the four-needle needle head and the five-needle needle head is realized. The locking of the sliding rod can be released and the rack is driven to drive the needle seat to move only by rotating the transverse strip and the turntable and other simple operations, complicated tools or tedious part disassembly and assembly are not needed, the downtime caused by adjustment of the number of needles is effectively shortened, the conversion efficiency of the sewing machine among different sewing tasks is improved, and the production cost is reduced. And an operator can flexibly select proper needle number configuration.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine field especially relates to a sewing machine needle adjusting mechanism. BACKGROUND

[0002] In the process of continuous development and evolution of sewing industry, as the core equipment, the performance and the function diversity of sewing machine play a key role in meeting the growing market demand. With the fine of textile process and the diversification of clothing style, the flexible adjustment demand of sewing machine needle number is increasingly prominent.

[0003] Most of the traditional sewing machines adopt the design mode of fixed needle number, either specially for four needle sewing operation, or only adapt five needle operation. This fixed needle installation mode is difficult to face the modern complex sewing situation.

[0004] When the production task switches between different needle number demands, the operator usually needs to spend a lot of time and effort to replace the whole needle assembly, this process not only involves complex tool use and part disassembly, installation steps, but also is easy to cause needle damage or failure of other parts of the sewing machine due to improper operation. In addition, frequent replacement operation inevitably leads to long-term shutdown of the sewing machine, seriously affecting the production efficiency and increasing the production cost of enterprises. Moreover, after replacing the needle, it often needs to be debugged several times to ensure that the sewing machine returns to the normal working state, which further reduces the continuity and stability of production, and is easy to cause sewing quality problems such as uneven needle spacing, unstable sewing tension, etc. due to inaccurate needle number adjustment.

[0005] Therefore, it is necessary to provide a new sewing machine needle adjusting mechanism to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above technical problems, the utility model provides a sewing machine needle adjusting mechanism.

[0007] The utility model provides a sewing machine needle adjusting mechanism, which comprises an installation column, the lower end of the installation column is fixedly connected with a right angle plate, the front end of the right angle plate is symmetrically provided with two limiting pipes, two sliding rods are slidably connected in the two limiting pipes, the lower ends of the two sliding rods are fixedly connected with two needle holders, and needle heads are arranged on the two needle holders.

[0008] Preferably, the two racks are symmetrically and staggeredly arranged, and the two racks are respectively meshed with two gears.

[0009] Preferably, the right angle plate is provided with a stand, the stand is rotationally connected with a connecting shaft, the gear is fixedly installed on the connecting shaft, and one end of the connecting shaft is connected with a rotating disc.

[0010] Preferably, the right angle plate is provided with a stand, the stand is rotationally connected with a connecting shaft, the gear is fixedly installed on the connecting shaft, and one end of the connecting shaft is connected with a rotating disc.

[0011] Preferably, one end of the right angle plate is provided with a convex base, the convex base is fixedly connected with a horizontal pipe, one end of the horizontal pipe is slidably connected with a plug rod, the other end of the plug rod is fixedly connected with an inner disc, the inner disc is arranged in the horizontal pipe, one end of the horizontal pipe is provided with a control assembly, the pipe wall of the limiting pipe is provided with a positioning opening, and both ends of the sliding rod are provided with clamping holes.

[0012] Preferably, the control assembly comprises a short shaft, one end of the short shaft is rotationally connected with the inner disc, and the other end of the short shaft is fixedly connected with a horizontal strip.

[0013] Preferably, the short shaft is a threaded rod, and the short shaft is threadedly connected with the pipe wall of one end of the horizontal pipe.

[0014] Compared with the related art, the sewing machine needle adjusting mechanism has the following advantages

[0015] Beneficial effects:

[0016] 1. The rotating disc drives the connecting shaft to rotate, drives the gear to drive the two intermeshing racks to move in dislocation, drives the two racks to drive the two top plates to move, and drives the two sliding rods to slide relative to the two limiting pipes, so that the positions of the two needle holders can be alternately controlled, without the need of complex tools or tedious disassembly and installation of parts, the efficient switching mode significantly shortens the downtime caused by needle number adjustment, improves the conversion efficiency of the sewing machine between different sewing tasks, enables the operator to quickly select the appropriate needle number configuration according to the fabric material, sewing process requirements and the like, greatly improves the adaptability and use convenience of the sewing machine, meets diversified sewing production requirements, and effectively improves the continuity and flexibility of production operation.

[0017] 2. The horizontal strip drives the short shaft to rotate, drives the inner disc to move relative to the inside of the horizontal pipe, makes one end of the plug rod slide out of the positioning opening of the limiting pipe, and makes the plug rod slide out of the clamping hole on the sliding rod, so that the locking of the sliding rod is released, the positions of the two needle holders in the switching process are ensured to be accurate and stable, and subsequent adjustment of the positions of the two needle holders is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1A schematic diagram of a preferred embodiment of this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the structure at point A.

[0020] Figure 3 for Figure 1 The diagram shows the structure at point B.

[0021] The following are the labels in the diagram: 1. Mounting post; 11. Right angle plate; 2. Limiting tube; 21. Slide rod; 3. Pin seat; 4. Top plate; 41. Rack; 42. Connecting shaft; 43. Gear; 5. Turntable; 6. Horizontal tube; 61. Insert rod; 62. Internal disc; 63. Short shaft; 7. Horizontal bar. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figures 1 to 3 A sewing machine needle adjustment mechanism includes: a mounting post 1, with a right-angle plate 11 fixedly connected to the lower end of the mounting post 1, two limiting tubes 2 symmetrically provided at the front end of the right-angle plate 11, and a sliding rod 21 slidably connected in each of the two limiting tubes 2, with a needle holder 3 fixedly connected to the lower end of each of the two sliding rods 21, and a needle on each of the two needle holders 3; and a convenient adjustment mechanism including two top plates 4, which are fixedly connected to the top ends of the two sliding rods 21 respectively, and a rack 41 fixedly connected to each of the two top plates 4, with a gear 43 provided between the two racks 41.

[0024] In the specific implementation process, such as Figure 1 and Figure 2 As shown, the two racks 41 are symmetrically staggered, and the two racks 41 mesh with the two gears 43 respectively.

[0025] It should be noted that: the connecting shaft 42 drives the gear 43 to move the two meshing racks 41 in a staggered manner. The two racks 41 drive the two top plates 4 to move, which in turn drives the two slide rods 21 to slide relative to the two limit tubes 2. This allows for the alternating control of the positions of the two needle holders 3, enabling convenient adjustment and switching between four-needle and five-needle needles.

[0026] refer to Figure 2 As shown, a column is provided on the right-angle plate 11, and a connecting shaft 42 is rotatably connected to the column. A gear 43 is fixedly installed on the connecting shaft 42, and a turntable 5 is installed and connected to one end of the connecting shaft 42.

[0027] It should be noted that the turntable 5 is designed to facilitate the rotation of the connecting shaft 42.

[0028] refer toFigure 1 and Figure 2 As shown, both ends of the right-angle plate 11 are provided with through holes, and the two racks 41 are slidably connected to the two through holes respectively. The lower ends of the two racks 41 are fixedly connected to the two pin seats 3 respectively.

[0029] It should be noted that: the two racks 41 drive the two top plates 4 to move, which in turn drives the two slide rods 21 to slide relative to the two limit tubes 2, thereby achieving alternating control of the position of the two needle seats 3.

[0030] refer to Figure 1 and Figure 3 As shown, one end of the right-angle plate 11 is provided with a protrusion, and a horizontal tube 6 is fixedly connected to the protrusion. A rod 61 is slidably connected to one end of the tube wall of the horizontal tube 6. The other end of the rod 61 is fixedly connected to an internal disk 62, which is located inside the horizontal tube 6. One end of the horizontal tube 6 is provided with a control component. The tube wall of the limiting tube 2 is provided with a positioning port. Both ends of the slide rod 21 are provided with locking holes.

[0031] It should be noted that: the internal disc 62 moves relative to the interior of the horizontal tube 6, causing one end of the insertion rod 61 to slide into the positioning port of the limiting tube 2, and at the same time, it slides into the corresponding locking hole on the slide rod 21, thus completing the locking of the slide rod 21, so as to facilitate the locking of the positions of the two needle seats 3.

[0032] refer to Figure 3 As shown, the control component includes a short shaft 63, one end of which is rotatably connected to the built-in disk 62, and the other end of which is fixedly connected to a crossbar 7.

[0033] It should be noted that rotating the horizontal bar 7 causes the short shaft 63 to rotate, which in turn drives the internal disc 62 to move relative to the interior of the horizontal tube 6.

[0034] refer to Figure 3 As shown, the short shaft 63 is a threaded rod, and the short shaft 63 is threadedly connected to one end of the wall of the horizontal tube 6.

[0035] It should be noted that the short shaft 63 is threaded to one end of the horizontal tube 6, so that the short shaft 63 can move along with it while rotating, thus providing a clamping force.

[0036] The working principle of the sewing machine needle adjustment mechanism provided by this utility model is as follows: Rotating the horizontal bar 7 causes the short shaft 63 to rotate, which drives the built-in disc 62 to move relative to the inside of the horizontal tube 6, so that one end of the insertion rod 61 slides away from the positioning port of the limiting tube 2, and at the same time slides away from the locking hole on the slide rod 21, thereby releasing the lock on the slide rod 21, so as to facilitate the subsequent adjustment of the position of the two needle holders 3.

[0037] Then rotate the turntable 5 to drive the connecting shaft 42 to rotate, which drives the gear 43 to drive the two meshing racks 41 to move out of position. The two racks 41 drive the two top plates 4 to move, which drives the two slide rods 21 to slide relative to the two limit tubes 2. This allows for alternating control of the position of the two needle seats 3, enabling convenient adjustment and switching between four-needle and five-needle needles.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sewing machine needle adjusting mechanism characterized by, The utility model relates to a kind of needle holder, including: Mounting column (1), the lower end of the mounting column (1) is fixedly connected with right-angle plate (11), the front end of the right-angle plate (11) is symmetrically equipped with two limit tubes (2), two The sliding rod (21) is slidably connected in the limit tube (2), the lower end of two The needle seat (3) is fixedly connected in the sliding rod (21), and two The needle seat (3) is equipped with needle head on. Convenient adjustment mechanism, the convenient adjustment mechanism includes two top plates (4), two The top plate (4) is fixedly connected with the top end of two sliding rods (21), two The top plate (4) is fixedly connected with rack (41) on, and two The rack (41) is equipped with gear (43) between.

2. A sewing machine needle adjustment mechanism according to claim 1, wherein, Two The rack (41) is symmetrically mispositioned, and two The rack (41) is meshed with two gear (43) respectively.

3. The sewing machine needle adjusting mechanism according to claim 1, wherein, The right-angle plate (11) is equipped with stand, the connecting shaft (42) is rotatably connected on the stand, the gear (43) is fixedly installed on connecting shaft (42), and one end of the connecting shaft (42) is installed and connected with rotary table (5).

4. The sewing machine needle adjusting mechanism according to claim 1, wherein, Two ends of the right-angle plate (11) are equipped with through-passage, two The rack (41) is slidably connected with two through-passage respectively, and the lower end of two The rack (41) is fixedly connected with two needle seat (3) respectively.

5. The sewing machine needle adjusting mechanism according to claim 1, wherein, One end of the right-angle plate (11) is equipped with boss, the boss is fixedly connected with cross pipe (6), the cross pipe (6) is slidably connected with plug rod (61) on the tube wall of one end, the other end of the plug rod (61) is fixedly connected with built-in disc (62), the built-in disc (62) is arranged in the inside of cross pipe (6), one end of the cross pipe (6) is equipped with control assembly, the tube wall of the limit tube (2) is equipped with positioning mouth, and both ends of the sliding rod (21) are equipped with clamping hole.

6. A sewing machine needle adjusting mechanism according to claim 5, wherein The control assembly includes short shaft (63), one end of the short shaft (63) is rotatably connected with built-in disc (62), and the other end of the short shaft (63) is fixedly connected with cross strip (7).

7. A sewing machine needle adjusting mechanism according to claim 6, wherein The short shaft (63) is threaded rod, and the short shaft (63) is threadedly connected with the tube wall of one end of cross pipe (6).

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