Needle spacing adjusting mechanism of multi-needle sewing machine for garment processing

Abstract

The utility model discloses a kind of needle pitch adjusting mechanism of multi-needle sewing machine for clothing processing, belong to multi-needle machine technical field.It is equipped with connecting cover, needle bar and electric telescopic rod are installed in the top of connecting cover, the bottom surface of connecting cover has cavity, adjusting plate is vertically slid in the inside of cavity, the telescopic end of electric telescopic rod is connected with the top end of adjusting plate, adjusting plate side is equipped with several adjusting grooves, and the included angle between several adjusting grooves and adjusting plate bottom surface gradually increases from one side of adjusting plate to the other side, adjusting block is slid in the inside of adjusting groove, cross bar is installed in cavity, several connecting sleeves are slid in the outside of cross bar, connecting rod is connected between connecting sleeve and adjusting block, needle seat is installed in the bottom surface of connecting sleeve, and needle seat is used to fix needle;The technical scheme can quickly adjust the distance of multiple needles, so as to improve sewing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of multi-needle sewing machine technology, specifically to a stitch length adjustment mechanism for a multi-needle sewing machine used in garment processing. Background Technology

[0002] Multi-needle sewing machines, as key equipment in the garment processing industry, can simultaneously create multiple stitches by configuring multiple needles at the same sewing position, significantly improving sewing efficiency and pattern diversity. Compared to single-needle sewing machines, they have obvious advantages in scenarios where multiple threads are sewn in parallel, such as shirt collars, trouser waistbands, and decorative stitching, and are widely used in the large-scale production of various garments, home textiles, and leather products.

[0003] Traditional multi-needle machines typically have a fixed needle spacing set at the factory, which cannot be flexibly adjusted according to actual production needs. When it is necessary to sew decorative lines of different widths or adapt to special fabrics, the entire needle plate assembly must be replaced or the needles must be repositioned, which is cumbersome and time-consuming.

[0004] Therefore, it is necessary to develop a mechanism that can quickly and accurately adjust the spacing between multiple needles to address the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide a stitch length adjustment mechanism for a multi-needle sewing machine used in garment processing, so as to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A stitch spacing adjustment mechanism for a multi-needle sewing machine used in garment processing includes a connecting cover. A needle bar and an electric telescopic rod are mounted on the top of the connecting cover. The bottom surface of the connecting cover has a cavity. An adjusting plate slides vertically inside the cavity. The telescopic end of the electric telescopic rod is connected to the top of the adjusting plate. Several adjusting grooves are formed on the side of the adjusting plate, and the included angle between the adjusting grooves and the bottom surface of the adjusting plate gradually increases from one side to the other. Adjusting blocks slide inside each adjusting groove. A crossbar is installed inside the cavity. Several connecting sleeves slide on the outside of the crossbar. A connecting rod connects the connecting sleeves and the adjusting blocks. A needle holder is mounted on the bottom surface of the connecting sleeve. The needle holder is used to fix the machine needle. The adjusting plate slides up and down driven by the electric telescopic rod. By utilizing the cooperation of the adjusting grooves and adjusting blocks, the spacing of multiple machine needles can be adjusted simultaneously without manual adjustment of each needle individually, adapting to different sewing needs and improving production flexibility. Furthermore, the crossbar has a square rod, and the connecting sleeve has a square hole. The square rod and the square hole cooperate to prevent the connecting sleeve from rotating on the crossbar, ensuring stability when the needle seat moves laterally and avoiding needle deviation from affecting sewing accuracy.

[0008] Furthermore, a pair of limiting strips are installed on the side of the cavity, and a pair of limiting grooves are opened on the side of the adjusting plate. The limiting strips slide in the limiting grooves. The cross-sections of the limiting strips and the limiting grooves are both trapezoidal. The trapezoidal cross-section of the limiting strips and the limiting grooves cooperate to prevent the adjusting plate from tilting or shaking when sliding, ensuring the positional accuracy of the adjusting grooves and ensuring accurate adjustment of the needle spacing.

[0009] Furthermore, the bottom surface of the needle holder has a mounting hole, and a screw is threadedly connected to the side of the needle holder. One end of the screw presses against the needle and fixes the needle in the mounting hole. By pressing the needle with the screw, the needle can be quickly fixed or removed, making the operation convenient. At the same time, it ensures that the needle does not loosen during sewing and guarantees the sewing quality.

[0010] Furthermore, an anti-slip washer is provided between the screw and the needle seat. The anti-slip washer can increase the friction between the screw and the needle seat, prevent the screw from loosening due to vibration during sewing, and improve the reliability of the needle fixation.

[0011] Furthermore, the number of adjustment slots and connecting sleeves is the same, and the number of adjustment slots and connecting sleeves corresponds one-to-one, ensuring that each needle can be independently adjusted through the corresponding adjustment slot, thereby achieving precise control of multiple needle distances.

[0012] Furthermore, the needle bar is rotatably connected to the connecting rod of the multi-needle machine via a pin. The pin connection allows the needle bar to move synchronously with the connecting rod of the multi-needle machine, driving the needle to pierce the fabric up and down to achieve the sewing function and ensuring stable and reliable needle bar movement.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the stitch length adjustment mechanism of the multi-needle sewing machine for garment processing drives the adjustment plate to slide up and down through an electric telescopic rod. By utilizing the cooperation of the adjustment groove and the adjustment block, the spacing of multiple needles can be adjusted simultaneously without manual adjustment of each needle, adapting to different sewing needs and improving production flexibility. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the stitch length adjustment mechanism of a multi-needle sewing machine for garment processing disclosed in an embodiment of this utility model;

[0015] Figure 2 This is a bottom view of the needle length adjustment mechanism of a multi-needle sewing machine for garment processing disclosed in an embodiment of the present utility model.

[0016] Figure 3 for Figure 2 Enlarged schematic diagram of structure A in the middle;

[0017] Figure 4 This is a first cross-sectional structural schematic diagram of the stitch length adjustment mechanism of a multi-needle sewing machine for garment processing disclosed in an embodiment of the present utility model.

[0018] Figure 5 This is a second cross-sectional structural schematic diagram of the stitch length adjustment mechanism of a multi-needle sewing machine for garment processing disclosed in an embodiment of this utility model.

[0019] In the diagram: 1. Connecting cover; 2. Needle bar; 3. Electric telescopic rod; 4. Cavity; 5. Needle seat; 6. Mounting hole; 7. Screw; 8. Adjusting plate; 9. Adjusting groove; 10. Crossbar; 11. Connecting sleeve; 12. Adjusting block; 13. Connecting rod; 14. Limiting strip. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a stitch length adjustment mechanism for a multi-needle sewing machine for garment processing, including a connecting cover 1, a needle bar 2 and an electric telescopic rod 3 installed on the top of the connecting cover 1, a cavity 4 on the bottom surface of the connecting cover 1, an adjusting plate 8 sliding vertically inside the cavity 4, the telescopic end of the electric telescopic rod 3 being connected to the top of the adjusting plate 8, a plurality of adjusting grooves 9 being provided on the side of the adjusting plate 8, and the included angle between the plurality of adjusting grooves 9 and the bottom surface of the adjusting plate 8 gradually increasing from one side of the adjusting plate 8 to the other side, adjusting blocks 12 sliding inside each adjusting groove 9, and the cavity 4... A crossbar 10 is installed, and several connecting sleeves 11 slide on the outer side of the crossbar 10. A connecting rod 13 connects the connecting sleeves 11 and the adjusting block 12. A needle seat 5 is installed on the bottom surface of the connecting sleeve 11. The needle seat 5 is used to fix the needle. The electric telescopic rod 3 extends and retracts, causing the adjusting plate 8 to slide vertically in the cavity 4. Because the angle between the adjusting groove 9 and the bottom surface of the adjusting plate 8 gradually increases from left to right, and the adjusting block 12 slides laterally in the adjusting groove 9 when the adjusting plate moves, the connecting sleeve 11 can be pushed to move on the crossbar 10 through the connecting rod 13, thereby causing the needle seat 5 and the needle to move laterally, thus realizing the needle spacing adjustment.

[0022] As an embodiment of this utility model, the crossbar 10 has a square bar, and the connecting sleeve 11 has a square hole. The square crossbar 10 and the square hole of the connecting sleeve 11 form a rigid fit. The connecting sleeve can only slide along the axial direction of the crossbar and cannot rotate around it, thus ensuring the linearity of the lateral movement of the needle.

[0023] As an embodiment of this utility model, a pair of limiting strips 14 are further installed on the side of the cavity 4, and a pair of limiting grooves are opened on the side of the adjusting plate 8. The limiting strips 14 slide in the limiting grooves. The cross sections of the limiting strips 14 and the limiting grooves are trapezoidal. The limiting strips 14 are embedded in the limiting grooves of the adjusting plate 8. The trapezoidal structure forms an axial limit. The adjusting plate can only slide vertically along the limiting strips to avoid uneven force causing displacement and ensure the stability of the adjustment process.

[0024] As an embodiment of this utility model, the bottom surface of the needle holder 5 has a mounting hole 6, and the side of the needle holder 5 is threadedly connected to a screw 7. One end of the screw 7 squeezes the needle and fixes the needle in the mounting hole 6. After inserting the needle into the mounting hole 6, the screw 7 is tightened, and the end of the screw squeezes the needle and fixes it by friction. When disassembling, the screw can be loosened to remove the needle.

[0025] As an embodiment of this utility model, an anti-slip washer is further provided between the screw 7 and the needle seat 5. The anti-slip washer is installed between the screw 7 and the needle seat 5 to increase the roughness of the contact surface, thereby enhancing the locking effect of the screw and preventing the needle from loosening.

[0026] As an embodiment of this utility model, the number of adjusting grooves 9 and connecting sleeves 11 is the same, and each adjusting groove 9 corresponds to a connecting sleeve 11 and a needle seat 5. When the adjusting plate 8 slides, each adjusting groove 9 independently drives the corresponding connecting sleeve 11 to move, thereby realizing the synchronous adjustment of the spacing between multiple needles.

[0027] As an embodiment of this utility model, the needle bar 2 is further rotatably connected to the connecting rod of the multi-needle machine via a pin. The connecting rod of the multi-needle machine drives the needle bar 2 to rotate via the pin. When the main shaft crank of the multi-needle machine rotates, the connecting rod will cause the needle bar to drive the connecting cover 1 and the needle to move up and down reciprocally to complete the sewing action. The pin connection ensures accurate motion transmission.

[0028] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A stitch length adjusting mechanism for a multi-needle sewing machine for garment processing, characterized by, The utility model provides a kind of needle fixing device, including connecting cover (1), needle rod (2) and electric telescopic rod (3) are installed in the top of connecting cover (1), the bottom surface of connecting cover (1) has cavity (4), the inside vertical sliding of cavity (4) has adjusting plate (8), the telescopic end of electric telescopic rod (3) and the top end of adjusting plate (8) are connected, the side surface of adjusting plate (8) is equipped with several adjusting grooves (9), and the included angle between several adjusting grooves (9) and adjusting plate (8) bottom surface gradually increases from one side of adjusting plate (8) to the other side, the inside of adjusting groove (9) is slid with adjusting block (12), crossbar (10) is installed in cavity (4), the outside of crossbar (10) is slid with several connecting sleeves (11), connecting rod (13) is connected between connecting sleeve (11) and adjusting block (12), needle seat (5) is installed in the bottom surface of connecting sleeve (11), and needle seat (5) is used to fix machine needle.

2. The stitch length adjusting mechanism of a multi-needle sewing machine for garment processing according to claim 1, wherein The square rod of the crossbar (10), the connecting sleeve (11) has square hole.

3. The stitch length adjusting mechanism of a multi-needle sewing machine for garment processing according to claim 1, wherein A pair of limiting strips (14) are installed in the side surface of the cavity (4), a pair of limiting grooves are opened in the side surface of the adjusting plate (8), the limiting strips (14) slide in the limiting grooves, and the cross section of the limiting strips (14) and the limiting grooves are both trapezoidal.

4. The stitch length adjusting mechanism of a multi-needle sewing machine for garment processing according to claim 1, wherein The bottom surface of the needle seat (5) has mounting hole (6), the side surface of the needle seat (5) is threadedly engaged with screw (7), one end of the screw (7) extrudes machine needle, and machine needle is fixed in the mounting hole (6).

5. The stitch length adjusting mechanism of a multi-needle sewing machine for garment processing according to claim 4, wherein A non-slip washer is arranged between the screw (7) and the needle seat (5).

6. The stitch length adjusting mechanism of a multi-needle sewing machine for garment processing according to claim 1, wherein The number of the adjusting grooves (9) and the connecting sleeves (11) is consistent.

7. The stitch length adjusting mechanism of a multi-needle sewing machine for garment processing according to claim 1, wherein The needle rod (2) is rotatably connected to the connecting rod of the multi-needle machine through a pin shaft.

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