Feeding mechanism of sewing machine

Abstract

The utility model relates to the field of sewing machines, and discloses a feeding mechanism of a sewing machine, which comprises a bottom plate, a placing plate connected onto the bottom plate in a sliding manner, and a material pressing component for fixing sewing materials on the placing plate, a piston rod of the air cylinder is connected with a U-shaped piece, one side of the first gear is connected into the U-shaped piece in a rotating mode, and the other side of the first gear is meshed with a second rack arranged on one side of the sliding rod. Then the air cylinder is started, an air cylinder piston rod drives the first gear to move forwards, due to the fact that the two sides of the first gear are meshed with the first rack and the second rack respectively, and the first rack is fixed, the first gear rotates, the first gear drives the sliding rod to move forwards when rotating, then the containing plate is driven to move forwards, and automatic linear feeding during sewing of the sewing machine body is achieved. The utility model has the advantages and effects that the sewing stitch is ensured to be straight, the manpower is saved, and the sewing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a feeding mechanism of a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing materials are interwoven or sewn together. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and artificial fibers, as well as products such as leather, plastic, and paper. The stitches are neat, beautiful, flat, and firm. The sewing speed is fast and easy to use. It has also been used to derive art forms such as hand-push embroidery and computer embroidery. At present, when sewing some straight materials, the existing technology usually uses manual methods to move the materials to be sewn into the sewing area and move them through the sewing machine for sewing. This method has the problems of wasting labor, easily causing crooked sewing, and low work efficiency. Utility Model Content

[0003] The utility model aims to provide a feeding mechanism for a sewing machine, which can solve the above technical problems, ensure that the straight lines of sewing seams will not be skewed, save manpower and improve sewing efficiency.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a feeding mechanism of a sewing machine, including a bottom plate, a sewing machine body is fixedly arranged on the bottom plate, a placing plate is slidably connected to one side of the sewing machine body, a material pressing assembly is arranged on the placing plate, and also includes a moving assembly for driving the placing plate to move back and forth, the moving assembly includes a rack 1 fixedly arranged on the bottom plate, a cylinder, and a slide seat, two slide seats are provided and are located on the same side of the rack, a slide rod is slidably connected inside the slide seat, a rack 2 is provided on one side of the slide rod, a U-shaped part is fixedly connected to the cylinder piston rod, a gear 1 is rotatably connected inside the U-shaped part, one side of the gear 1 is meshed with the rack 1, and the other side of the gear 1 is meshed with the rack 2.

[0005] By adopting the above technical scheme, the sewing material is fixed by the material pressing assembly, and then the cylinder is started, and the cylinder piston rod drives the gear one to move forward. Since the two sides of the gear one are respectively meshed with the rack one and the rack two and the rack one is fixed, the gear one rotates, and when the gear one rotates, it drives the slide bar to move forward. The moving distance is greater than the extension distance of the cylinder piston rod, which can reduce the length of the cylinder piston rod, is not restricted by the site, and is convenient for use and installation; the slide bar moves forward and drives the placement plate to move forward, so that the sewing machine body automatically feeds the material when sewing, which can save manpower, and the sewing seams are in a straight line, which can improve the sewing quality and efficiency.

[0006] The utility model is further configured as follows: two groups of movable components are respectively located on both sides of the placement plate, a connecting block is provided on the side wall of the placement plate, and one end of the slide rod away from the cylinder is fixedly connected to the connecting block.

[0007] By adopting the above technical solution, the slide rod is parallel to the placement plate, and the slide rod can be connected to the placement plate through a connecting block to ensure that the slide rod slides freely in the slide seat, and the two sets of moving components drive the placement plate to slide smoothly.

[0008] The utility model is further configured as follows: the material pressing assembly includes an L-shaped connecting plate symmetrically arranged on the front and rear sides of the placing plate, the connecting plate includes a vertical rod, the top of the vertical rod is connected to a horizontal rod, the horizontal rod is rotatably connected to a screw, the top of the screw is fixed with a gear 2, the bottom is threadedly connected to a pressing plate, one side of the gear 2 is meshed with a gear 3, a sliding groove is opened on the inner side of the vertical rod, and one side of the pressing plate is slidably connected to the inner wall of the sliding groove.

[0009] By adopting the above technical solution, gear three is rotated, gear three is meshed with gear two, driving gear two to rotate, and the rotation of gear two drives the screw to rotate, and then the pressing plate moves downward to press tightly, which has the effect of fixing the sewing material stably and being simple and convenient to use.

[0010] The utility model is further configured as follows: a hand wheel is provided on one side of the gear three, and the hand wheel is used to drive the gear three to rotate.

[0011] By adopting the above technical solution, rotating the hand wheel drives the gear three to rotate, which has the advantages of simple structure and economy.

[0012] The utility model is further configured as follows: a fixed shaft is arranged between two opposite sides of the U-shaped piece, and the gear is connected to the rotating shaft when it is rotated.

[0013] By adopting the above technical solution, the effect of the gear being rotatably connected to the fixed shaft is achieved, which is convenient and efficient.

[0014] The utility model is further configured as follows: a limit block is fixedly arranged at one end of the slide rod close to the cylinder, and the limit block is used to limit the slide rod from being separated from the slide seat.

[0015] By adopting the above technical solution, the limit block is fixedly arranged at one end of the slide rod close to the cylinder, which can prevent the slide rod from detaching from the slide seat when sliding to the limit position.

[0016] The utility model is further configured as follows: a fixing block is provided on the bottom plate, and the cylinder is fixed on the fixing block.

[0017] By adopting the above technical solution, the cylinder can be fixed on the base plate through the fixing block, and at the same time, the gear 1 can be kept away from the base plate by a certain distance, so as to ensure that the gear 1 rotates stably without getting stuck.

[0018] The utility model is further configured as follows: the slide seat is connected to the bottom plate by screws.

[0019] By adopting the above technical solution, the sliding seat is fixed to the floor by screws, which is convenient for installation and disassembly.

[0020] The utility model is further configured as follows: a buffer pad is provided at the bottom of the pressing plate.

[0021] By adopting the above technical solution, it is possible to prevent the sewing material from being damaged when the pressure of the pressing plate is too large.

[0022] The utility model is further configured as follows: the screw rod is located in the middle of the pressing plate.

[0023] By adopting the above technical solution, the pressure of the pressing plate when pressing the sewing material can be uniform, preventing the sewing material from being moved due to uneven force and causing the seam to be tilted outward.

[0024] The beneficial effects of the utility model are as follows: by arranging cylinders on both sides of the placement plate, the cylinder piston rod is fixedly connected to the U-shaped piece, the U-shaped piece is rotatably connected to gear one, one side of gear one is meshed with rack one fixedly arranged on the floor, and the other side is used to mesh with rack two, rack two is arranged on the slide bar, and the slide bar is slidably connected in the slide seat, so that the cylinder telescopes to drive the slide bar to move forward, and then the placement plate is moved forward, and the sewing machine is automatically fed with sewing materials. The moving distance of the placement plate is greater than the extension distance of the cylinder piston rod, which can reduce the length of the cylinder piston rod, is not restricted by the site, and is convenient to use, and the placement plate is provided with a material pressing component to ensure that the sewing material moves in a straight line with the slide bar, and the sewing seams are in a straight line, which can improve the sewing quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0027] Figure 2 It is a schematic diagram of a material pressing component of the utility model.

[0028] In the figure, 1, bottom plate; 2, sewing machine body; 3, placement plate; 4, moving assembly; 41, rack 1; 42, cylinder; 43, slide seat; 44, slide rod; 45, rack 2; 46, U-shaped piece; 47, fixed shaft; 5, pressing assembly; 51, L-shaped connecting plate; 511, vertical rod; 512, horizontal rod; 52, screw rod; 53, pressing plate; 54, gear 2; 55, gear 3; 56, hand wheel; 6, limit block; 7, fixed block; 8, connecting block. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only 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.

[0030] Embodiment, a sewing machine feeding mechanism, such as Figure 1 , Figure 2 As shown, it includes a bottom plate 1 fixed with a sewing machine body 2 and a fixing block 7, a placing plate 3 slidably connected to the bottom plate 1, and a pressing assembly 5 for fixing the sewing material on the placing plate 3, including an L-shaped connecting plate 51, a screw 52, ​​a gear 2 54, a pressing plate 53, a gear 3 55, and a hand wheel 56, wherein the L-shaped connecting plate 51 includes a vertical plate fixed to the placing plate 3 and a horizontal plate fixedly connected to the top of the vertical plate, and is used to drive the placing plate 3 to move forward and backward, including a piston rod connected to a U-shaped member 46 and fixed A cylinder 42 is fixed on it, a fixed shaft 47 is fixed between the two side edges of the U-shaped part 46, a moving component 4 of a gear 1 which is rotatably connected to the fixed shaft 47 and meshes with a rack 1 41 on one side and meshes with a rack 2 45 opened on one side of a slide rod 44 on the other side, and a connecting block 8 connecting the slide rod 44 and the placement plate 3, wherein the rack 1 41 is fixed on the base plate 1, and one side of the cylinder 42 is provided with two slide seats 43 fixed to the base plate 1 by bolts, and the slide rod 44 is slidably connected in the slide seat 43.

[0031] Its working principle is: first, the sewing material is fixed on the placement plate 3 through the material pressing component 5, and the hand wheel 56 is rotated, and the hand wheel 56 drives the gear three 55 to rotate, and the gear three 55 is meshed with the gear two 54, driving the gear two 54 to rotate, and the rotation of the gear two 54 drives the screw 52 to rotate, and then the pressing plate 53 moves downward to press the sewing material, so as to fix the sewing material, and then the cylinder 42 is started, and the piston rod of the cylinder 42 drives the gear 46 to move forward. Since the two sides of the gear one are respectively meshed with the rack one 41 and the rack two 45 and the rack one 41 is fixed, the gear one rotates, and when the gear one rotates, it drives the slide bar 44 to move forward, and then drives the placement plate 3 to move forward, so that the sewing machine body 2 automatically feeds the material along a straight line when sewing, which can save manpower and improve the sewing quality and efficiency.

[0032] Specifically, Figure 1 As shown, the moving assembly 4 is provided with two groups respectively located on both sides of the placement plate 3, the side wall of the placement plate 3 is provided with a connecting block 8, and the end of the slide rod 44 away from the cylinder 42 is fixedly connected to the connecting block 8, which can drive the placement plate 3 to slide smoothly.

[0033] Specifically, Figure 1 As shown, a limit block 6 is fixedly disposed at one end of the slide rod 44 close to the cylinder 42 , and the limit block 6 can be used to limit the slide rod 44 from separating from the slide seat 43 .

[0034] Specifically, Figure 1 As shown, a buffer pad is provided at the bottom of the pressing plate 53 to relieve the pressure of the pressing plate 53 and protect the sewing material.

[0035] Specifically, Figure 2 As shown, the screw 52 is located in the middle of the pressing plate 53, so that the pressing plate 53 can apply uniform pressure when pressing the sewing material, so that the sewing material moves in a straight line.

Claims

1. A feeding mechanism for a sewing machine, characterized in that: The invention comprises a bottom plate (1), on which a sewing machine body (2) is fixedly arranged, a placing plate (3) is slidably connected to one side of the sewing machine body (2), a material pressing assembly (5) is arranged on the placing plate (3), and a moving assembly (4) for driving the placing plate (3) to move forward and backward, the moving assembly (4) comprising a rack (41) fixedly arranged on the bottom plate (1), a cylinder (42), and a slide seat (43), two slide seats (43) are provided and are located on the same side of the rack (41), a slide rod (44) is slidably connected inside the slide seat (43), a rack (45) is provided on one side of the slide rod (44), a U-shaped part (46) is fixedly connected to the piston rod of the cylinder (42), a gear (1) is rotatably connected inside the U-shaped part (46), one side of the gear (1) is meshed with the rack (41), and the other side is meshed with the rack (45).

2. A feeding mechanism for a sewing machine according to claim 1, characterized in that: The moving assembly (4) is provided with two groups respectively located on both sides of the placement plate (3); a connecting block (8) is provided on the side wall of the placement plate (3); and one end of the sliding rod (44) away from the cylinder (42) is fixedly connected to the connecting block (8).

3. A feeding mechanism for a sewing machine according to claim 2, characterized in that: The pressing assembly (5) comprises an L-shaped connecting plate (51) symmetrically arranged on the front and rear sides of the placing plate (3), the connecting plate comprising a vertical rod (511), the top of the vertical rod (511) is connected to a horizontal rod (512), a screw rod (52) is rotatably connected to the horizontal rod (512), a gear 2 (54) is fixedly provided on the top of the screw rod (52), and a pressing plate (53) is threadedly connected to the bottom, a gear 3 (55) is meshed on one side of the gear 2 (54), a sliding groove is opened on the inner side of the vertical rod (511), and one side of the pressing plate (53) is slidably connected to the inner wall of the sliding groove.

4. A feeding mechanism for a sewing machine according to claim 3, characterized in that: A hand wheel (56) is provided on one side of the gear three (55), and the hand wheel (56) is used to drive the gear three (55) to rotate.

5. A feeding mechanism for a sewing machine according to claim 1, characterized in that: A fixed shaft (47) is provided between two opposite sides of the U-shaped member (46), and the gear is rotatably connected to the rotating shaft.

6. A feeding mechanism for a sewing machine according to claim 1, characterized in that: A limit block (6) is fixedly provided at one end of the slide rod (44) close to the cylinder (42), and the limit block (6) is used to limit the slide rod (44) from leaving the slide seat (43).

7. A feeding mechanism for a sewing machine according to claim 1, characterized in that: A fixing block (7) is provided on the bottom plate (1), and the cylinder (42) is fixed on the fixing block (7).

8. A feeding mechanism for a sewing machine according to claim 1, characterized in that: The slide seat (43) is connected to the base plate (1) via screws.

9. A feeding mechanism for a sewing machine according to claim 3, characterized in that: A buffer pad is provided at the bottom of the pressing plate (53).

10. A feeding mechanism for a sewing machine according to claim 3, characterized in that: The screw rod (52) is located in the middle of the pressing plate (53).

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