Left-right split type lower jump seam mechanism of waist sewing machine

Abstract

The utility model discloses a left and right split type lower jump stitch mechanism of a waist sewing machine, which comprises a jump stitch power source, a power shaft and a thread shifting assembly, one end of the power shaft is arranged on the jump stitch power source, the thread shifting assembly is connected with the other end of the power shaft, the jump stitch power source drives the power shaft to move left and right, the thread shifting assembly comprises a main frame seat, and the main frame seat is connected with the power shaft. The main frame base is provided with a right skipping seam assembly for achieving right path skipping seams and a left skipping seam assembly for achieving left path skipping seams, and the main frame base is fixed to the power shaft. According to the structure, multiple functions are achieved, and the requirement change in the market can be greatly met.

Description

Technical Field

[0001] The utility model belongs to the relevant technical field of sewing equipment, in particular to a left-right split lower jump sewing mechanism for a waist-up machine. Background Art

[0002] In the garment processing process, many garments need to be processed with waistband, such as pants, coats, etc. Traditional waistband machines such as Figure 1 As shown, the thread shifting assembly 2 is generally driven by a power shaft 3 to reciprocate, and the power shaft 3 is installed on the skipping stitch power source 1. The driving end of the thread shifting assembly 2 can rotate relative to the skipping stitch power source 1. This structure only realizes the function of keeping the bottom seam on the sewing fabric without skipping stitches on the left and right sides, and cannot realize the skipping stitch function. The thread shifting assembly 2 includes a needle shifting fixing seat 2-1, a needle shifting seat 2-2, and a needle shifting 2-3. The needle shifting seat 2-3 is fixed on the side of the needle shifting seat 2-2, and the needle shifting seat 2-2 is fixed on the needle shifting fixing seat 2-1 by a fixing screw 2-4; the needle shifting fixing seat 2-1 is connected to one end of the power shaft 3. However, with the improvement of people's aesthetic level, the requirements for clothing workmanship are becoming more and more refined, especially the requirements for details are becoming higher and higher. This structure with a single function can no longer meet customer needs, so it needs to be improved. Utility Model Content

[0003] The utility model aims to provide a left-right split lower jump stitch mechanism for an upper waist machine, which solves the problem that the existing thread dialing components have a single function and cannot realize the jump stitch function, and ultimately cannot meet customer needs.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a left-right split lower jump stitch mechanism for an upper waist machine, comprising a jump stitch power source, a power shaft and a thread shifting assembly, one end of the power shaft is mounted on the jump stitch power source, the thread shifting assembly is connected to the other end of the power shaft, the jump stitch power source drives the power shaft to move left and right, the thread shifting assembly comprises a main frame seat, a right jump stitch assembly for realizing right-way jump stitching and a left jump stitch assembly for realizing left-way jump stitching are arranged on the main frame seat, and the main frame seat is fixed on the power shaft.

[0006] Preferably, for the convenience of installation, the right skipping seam assembly comprises a cylinder 1, a pin 1, a lever 1, a slider and a slide rod, the pin 1 is fixed to one side of the lever 1, the other side of the lever 1 is fixed to the slider by a fixing screw 2, the slider is fixed to the slide rod, the slide rod is connected to the piston rod of the cylinder 1, the cylinder 1 is fixed to the main frame seat, the left skipping seam assembly comprises a cylinder 2, a pin 2, a lever 2, a connecting block and a driving shaft, the pin 2 is fixed to one side of the lever 2, the other side of the lever 2 is fixed to the bottom of the connecting block, the cylinder 2 is fixed to the main frame seat, the cylinder 2 is connected to a driving shaft that passes through the main frame seat, and the driving shaft that passes through one end of the main frame seat is connected to the connecting block.

[0007] Preferably, in order to achieve the guiding effect during movement and avoid position deviation during movement, which ultimately affects the seam skipping, a slider guide groove is provided under the main frame seat, the slider is located in the slider guide groove, and a positioning plate located on the right side of the main frame seat is provided on the left side of the slider guide groove, and the cylinder is fixed to the right side of the positioning plate by three long screws.

[0008] Preferably, to avoid hard collision, a damping gasket is provided on the left side of the slider guide groove and is sleeved on the outside of the slide rod, one end of the damping gasket abuts against the side of the slider, and the other end of the damping gasket abuts against the left side of the positioning plate.

[0009] Preferably, to facilitate later disassembly, the cylinder 2 is fixed to the left position above the main frame seat by three long screws 2, and the shift rod 2 is fixed to the bottom of the connecting block by two fixing screws 3, and the connecting block is located on the right side of the main frame seat.

[0010] Preferably, in order to achieve the guiding effect during movement and avoid position deviation during movement, which ultimately affects the seam skipping, guide grooves are provided on both sides of the driving shaft above the main frame seat, and a guide sleeve is provided in each guide groove. A guide shaft is slidably connected in each guide sleeve, and one end of each guide shaft is fixed in the connecting block.

[0011] Preferably, in order to facilitate later disassembly and tightness adjustment, a positioning hole is provided on both sides of the connecting block, the guide shaft is inserted into the positioning hole, a notch is provided on the side of each positioning hole, the notch is connected to the positioning hole, and a long screw three is threadedly connected to the notch above the connecting block to adjust the aperture of the positioning hole, and the driving shaft is threadedly connected to the fixing screw four above the connecting block to lock the driving shaft in the connection.

[0012] Preferably, two ventilation interfaces 1 are arranged on one side of the cylinder, and two ventilation interfaces 2 are arranged on the second side of the cylinder.

[0013] The utility model has the following beneficial effects: the structure can realize four functions, the first one is the normal bottom thread dialing function; the second one is the left and right skipping seam function; the third one is the left skipping seam function; the fourth one is the right skipping seam function; and finally the multi-function is realized, which can greatly meet the changing needs in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the existing decomposition structure;

[0015] Figure 2 This is a schematic diagram of the structure when the jump needle power source, the wire pulling assembly and the power shaft are separated in Example 1;

[0016] Figure 3 This is a schematic diagram of the structure of the dialing assembly in Example 1;

[0017] Figure 4 This is a schematic diagram of the exploded structure of the wire-dial assembly in Example 1;

[0018] Figure 5 This is a schematic diagram of sewing materials in which the left and right seams are not skipped and the bottom seams are kept on the sewing fabric in function 1 of embodiment 1;

[0019] Figure 6 This is a schematic diagram of sewing material in which the left and right sides are skipped at the same time in function 2 of embodiment 1 to ensure that there is no bottom line on the sewing fabric;

[0020] Figure 7 This is a schematic diagram of the sewing material in which no skipping seam is performed on the right side in function 3 of embodiment 1, and skipping seam is performed on the left side to ensure that there is a bottom surface line on the right side of the sewing fabric, and there is no bottom surface on the left side;

[0021] Figure 8 This is a schematic diagram of the sewing material in which no skipping of the left seam and skipping of the right seam in function 4 of embodiment 1 ensure that there is a bottom surface line on the left side of the sewing fabric and no bottom surface line on the right side.

[0022] : Figure markings: jump stitch power source 1, thread shifting assembly 2, needle shifting fixing seat 2-1, needle shifting seat 2-2, needle shifting 2-3, fixing screw 1 2-4, main frame seat 2-5, power shaft 3, right jump stitch assembly 4, cylinder 1 4-1, needle shifting 1 4-2, lever 1 4-3, slider 4-4, slide bar 4-5, left jump stitch assembly 5, cylinder 2 5-1, needle shifting 2 5-2, lever 2 5-3, connecting block 5-4, driving shaft 5-5, slider guide groove 6, positioning plate 7, damping gasket 8, long screw 1 9, fixing screw 3 10, guide groove 11, guide sleeve 12, guide shaft 13, positioning hole 14, notch 15, fixing screw 4 16, ventilation interface 1 17, ventilation interface 2 18, long screw 2 19, long screw 3 20. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 2-4 As shown, the present embodiment discloses a left-right split lower jump stitch mechanism of an upper waist machine, comprising a jump stitch power source 1, a power shaft 3 and a thread shifting assembly 2, one end of the power shaft 3 is mounted on the jump stitch power source 1, the thread shifting assembly 2 is connected to the other end of the power shaft 3, the jump stitch power source 1 drives the power shaft 3 to move left and right, the thread shifting assembly 2 comprises a main frame seat 2-5, a right jump stitch assembly 4 for realizing right-way jump stitching and a left jump stitch assembly 5 for realizing left-way jump stitching are arranged on the main frame seat 2-5, and the main frame seat 2-5 is fixed on the power shaft 3.

[0026] Preferably, in order to facilitate installation, the right seam skipping assembly 4 includes a cylinder 4-1, a needle 4-2, a lever 4-3, a slider 4-4 and a slide bar 4-5, the needle 4-2 is fixed to one side of the lever 4-3, the other side of the lever 4-3 is fixed to the slider 4-4 by a fixing screw 4-6, the slider 4-4 is fixed to the slide bar 4-5, the slide bar 4-5 is connected to the piston rod of the cylinder 4-1, and the cylinder 4-1 is fixed to the main frame seat 2-5; at the same time, in order to achieve the guiding effect during movement and avoid position deviation during movement, which ultimately affects the seam skipping, the main frame A slider guide groove 6 is provided below the seat 2-5, the slider 4-4 is located in the slider guide groove 6, and a positioning plate 7 located on the right side of the main frame seat 2-5 is provided on the left side of the slider guide groove 6, and the cylinder 4-1 is fixed to the right side of the positioning plate 7 by three long screws 9; finally, when right seam skipping is required, the cylinder 4-1 opens and pushes the slide bar 4-5, so that the slider 4-4 fixed on the slide bar 4-5 slides out along the slider guide groove 6 on the main frame seat 2-5, so that the lever 4-3 fixed on the slider 4-4 drives the lever 4-3 to leave the normal working angle to realize the right seam skipping function;

[0027] The left skip seam assembly 5 comprises a cylinder 2 5-1, a needle 2 5-2, a lever 2 5-3, a connecting block 5-4 and a drive shaft 5-5. The needle 2 5-2 is fixed to one side of the lever 2 5-3, and the other side of the lever 2 5-3 is fixed to the bottom of the connecting block 5-4. The cylinder 2 5-1 is fixed to the main frame seat 2-5, and the cylinder 2 5-1 is connected with a driving shaft 5-5 that passes through the main frame seat 2-5, and the driving shaft 5-5 that passes through one end of the main frame seat 2-5 is connected with the connecting block 5-4. In order to facilitate disassembly in the later stage, the cylinder 2 5-1 is fixed to the left position above the main frame seat 2-5 by three long screws 2 19, and the lever 2 5-3 is fixed to the bottom of the connecting block 5-4 by two fixing screws 3 10, and the connecting block 5-4 is located on the right side of the main frame seat 2-5. In order to achieve the guiding effect during movement and avoid the position difference during movement, the piston rod 2-1 is fixed to the bottom of the connecting block 5-4 by two fixing screws 3 10. The position is offset, which eventually affects the skipping seam. A guide groove 11 is arranged on both sides of the driving shaft 5-5 above the main frame seat 2-5, and a guide sleeve 12 is arranged in each guide groove 11. A guide shaft 13 is slidably connected in each guide sleeve 12, and one end of each guide shaft 13 is fixed in the connecting block 5-4, so that when the left skipping seam is required, the cylinder 2 5-1 is opened to push the driving shaft 5-5, and the driving shaft 5-5 slides out along the guide sleeve 12 through the guide shaft 13, so that the connecting block 5-4 fixed on the driving shaft 5-5 drives the needle 2 5-2 on the machine of the shifting rod 2 5-3 to leave the normal working angle to realize the left-way skipping seam function, and the needle 2 5-2 and the needle 1 4-2 are arranged on the same side, and the length of the shifting rod 2 5-3 is longer than the length of the shifting rod 1 4-3, so as to ensure that the needle 2 5-2 is located in front of the needle 1 4-2.

[0028] Preferably, in order to avoid hard collision, a damping gasket 8 is provided on the left side of the slider guide groove 6 and is sleeved on the outside of the slide rod 4-5. One end of the damping gasket 8 abuts against the side of the slider 4-4, and the other end of the damping gasket 8 abuts against the left side of the positioning plate 7. By providing the damping gasket 8, it can be avoided that the slider 4-4 collides with the positioning plate 7 and is damaged when it moves.

[0029] Preferably, in order to facilitate later disassembly and adjustment of tightness, a positioning hole 14 is provided on both sides of the connecting block 5-4, the guide shaft 13 is inserted into the positioning hole 14, and a notch 15 is provided on the side of each positioning hole 14, the notch 15 is connected with the positioning hole 14, and the top of the connecting block 5-4 is threadedly connected to the notch 15 by a long screw three 20 for adjusting the aperture of the positioning hole 14, and the driving shaft 5-5 is threadedly connected to the fixing screw four 16 above the connecting block 5-4 to lock the driving shaft 5-5 in the connection. Through the above-mentioned structural arrangement, the aperture of the positioning hole 14 can be adjusted as required to lock the driving shaft 5-5, and the tightness of the locking of the driving shaft 5-5 can be appropriately adjusted as required.

[0030] Preferably, the cylinder 1 4 - 1 is provided with two ventilation interfaces 17 on its side, and the cylinder 2 5 - 1 is provided with two ventilation interfaces 18 on its side. The ventilation interfaces provided on the sides facilitate air inlet and outlet, and do not affect the movement of the left and right jump seams.

[0031] This structure can achieve the following four functions:

[0032] like Figure 5 As shown, when function 1 is realized: the cylinders (cylinder one 4-1, cylinder two 5-1) for controlling the left and right skip stitches are in a closed state, and the power shaft 3 driven from the skip stitch power source 1 moves left and right to realize the normal function of pulling the bottom thread, so that it forms a coil with the curved needle, and the machine needle passes through the bottom thread to form a stitch, so as to achieve the perfect stitch sewing line, but this result can only meet the needs of a part of the market;

[0033] like Figure 6 As shown, when function 2 is realized: the cylinders (cylinder 1 4-1 and cylinder 2 5-1) for controlling the left and right skip stitches are opened at the same time, so that the needle 2 5-2 on the lever 2 5-3 and the needle 1 4-2 on the lever 1 4-3 skip the bottom line function under normal circumstances, and the cylinder is separated from the bottom line when it is pushed out, so that it cannot form a coil with the curved needle, and the machine needle cannot pass through the bottom line to form a skip stitch, thereby achieving the purpose of skip stitch to meet customer needs;

[0034] like Figure 7 As shown, when function 3 is realized: the cylinder 2 5-1 for controlling the left skip stitch is opened, so that the needle 2 5-2 on the lever 2 5-3 skips the bottom line function under normal circumstances, and the cylinder is separated from the bottom line when it is pushed out, so that it cannot form a coil with the curved needle, and the machine needle cannot pass through the bottom line to form a skip stitch, thereby achieving the purpose of skip stitch to meet customer needs; the specific principle is that when the left skip stitch is required, the cylinder 2 5-1 is opened to push the drive shaft 5-5, and the drive shaft 5-5 slides out along the guide sleeve 12 through the guide shaft 13, so that the connecting block 5-4 on the fixed drive shaft 5-5 drives the needle 2 5-2 on the lever 2 5-3 to leave the normal working angle to realize the left skip stitch;

[0035] like Figure 8 As shown, when function 4 is realized: the cylinder 4-1 for controlling the right skipping seam is opened, so that the needle 4-2 on the lever 4-3 skips the bottom line function under normal circumstances, and the cylinder is separated from the bottom line when it is pushed out, so that it cannot form a coil with the curved needle, and the machine needle cannot pass through the bottom line to form a skipping seam, thereby achieving the purpose of skipping seam to meet customer needs; the specific principle is that when the right skipping seam is required, the cylinder 4-1 is opened to push the slide bar 4-5, so that the slider 4-4 fixed on the slide bar 4-5 slides out along the slider guide groove 6 on the main frame seat 2-5, so that the lever 4-3 fixed on the slider 4-4 drives the lever 4-3 to leave the normal working angle to realize the right skipping seam function;

[0036] In summary, this structure can freely and quickly switch the above four functions to achieve multi-functions, while the products on the market can only achieve function 1 or function 2. Therefore, this structure can greatly meet the changes in market demand.

[0037] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A left-right split lower jump stitch mechanism for an upper waist machine, comprising a jump stitch power source (1), a power shaft (3) and a thread shifting assembly (2), wherein one end of the power shaft (3) is mounted on the jump stitch power source (1), the thread shifting assembly (2) is connected to the other end of the power shaft (3), and the jump stitch power source (1) drives the power shaft (3) to move left and right, characterized in that: The wire-pulling assembly (2) comprises a main frame seat (2-5), on which a right-skipping assembly (4) for realizing right-path skipping and a left-skipping assembly (5) for realizing left-path skipping are arranged, and the main frame seat (2-5) is fixed on the power shaft (3).

2. The left-right split lower jump stitch mechanism of the upper waist machine according to claim 1, characterized in that: The right skipping stitch assembly (4) comprises a cylinder (4-1), a needle (4-2), a lever (4-3), a slider (4-4) and a slide bar (4-5); the needle (4-2) is fixed to one side of the lever (4-3); the other side of the lever (4-3) is fixed to the slider (4-4) by a fixing screw (4-6); the slider (4-4) is fixed to the slide bar (4-5); the slide bar (4-5) is connected to the piston rod of the cylinder (4-1); the cylinder (4-1) is fixed to the main frame seat (2-5); the left skipping stitch assembly (5) ) comprises a second cylinder (5-1), a second shifting needle (5-2), a second shifting rod (5-3), a connecting block (5-4) and a driving shaft (5-5), wherein the second shifting needle (5-2) is fixed to one side of the second shifting rod (5-3), and the other side of the second shifting rod (5-3) is fixed to the bottom of the connecting block (5-4), the second cylinder (5-1) is fixed to the main frame seat (2-5), the second cylinder (5-1) is connected to a driving shaft (5-5) passing through the main frame seat (2-5), and the driving shaft (5-5) passing through one end of the main frame seat (2-5) is connected to the connecting block (5-4).

3. The left-right split lower jump stitch mechanism of the upper waist machine according to claim 2, characterized in that: A slider guide groove (6) is provided below the main frame seat (2-5), the slider (4-4) is located in the slider guide groove (6), and a positioning plate (7) located on the right side of the main frame seat (2-5) is provided on the left side of the slider guide groove (6), and the cylinder (4-1) is fixed to the right side of the positioning plate (7) by three long screws (9).

4. The left-right split lower jump stitch mechanism of the upper waist machine according to claim 3, characterized in that: A damping gasket (8) is arranged on the left side of the slider guide groove (6) and is sleeved on the outside of the slide bar (4-5). One end of the damping gasket (8) abuts against the side of the slider (4-4), and the other end of the damping gasket (8) abuts against the left side of the positioning plate (7).

5. The left-right split lower jump stitch mechanism of the upper waist machine according to claim 2, characterized in that: The second cylinder (5-1) is fixed to the left position above the main frame seat (2-5) by three second long screws (19), and the second lever (5-3) is fixed to the bottom of the connecting block (5-4) by two third fixing screws (10), and the connecting block (5-4) is located on the right side of the main frame seat (2-5).

6. The left-right split lower jump stitch mechanism of the upper waist machine according to claim 5, characterized in that: Guide grooves (11) are arranged above the main frame seat (2-5) and are located on both sides of the drive shaft (5-5). A guide sleeve (12) is arranged in each guide groove (11). A guide shaft (13) is slidably connected in each guide sleeve (12). One end of each guide shaft (13) is fixed in the connection block (5-4).

7. The left-right split lower jump stitch mechanism of the upper waist machine according to claim 6, characterized in that: A positioning hole (14) is provided on both sides of the connection block (5-4), the guide shaft (13) is inserted into the positioning hole (14), a notch (15) is provided on the side of each positioning hole (14), the notch (15) is communicated with the positioning hole (14), a long screw three (20) is threadedly connected to the notch (15) above the connection block (5-4) for adjusting the aperture of the positioning hole (14), and the drive shaft (5-5) is threadedly connected to the fixing screw four (16) above the connection block (5-4) to lock the drive shaft (5-5) in the connection.

8. A left-right split lower jump stitch mechanism for a waist-up machine according to claim 2, 3, 4, 5, 6 or 7, characterized in that: The side of the cylinder 1 (4-1) is provided with two ventilation interfaces 1 (17), and the side of the cylinder 2 (5-1) is provided with two ventilation interfaces 2 (18).

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