Auxiliary device for sewing machine to walk straight line

Abstract

The utility model relates to the technical field of sewing machines, in particular to a sewing machine straight line walking auxiliary device which comprises a sewing machine seat, a threaded lead screw is rotatably connected in the sewing machine seat, a translation seat is slidably connected to the top of the sewing machine seat, and a lifting screw is rotatably connected to the inner top wall of the translation seat. A double-end hinge block is slidably connected to the outer portion of the cross rod, a pressing roller is hinged to the bottom of the double-end hinge block, a fixing seat is slidably connected to the top of the sewing machine seat, and a pressing pad is rotatably connected to the bottom of an adjusting screw rod. According to the auxiliary device for the sewing machine to walk straight, when the sewing position of the cloth in the left-right direction needs to be adjusted, an adjusting screw rod is rotated firstly to enable a pressing pad to loosen the cloth, then a first button rod on the left side of a sewing machine base is rotated, and two threaded lead screws are driven to rotate synchronously through a first belt wheel; and the left and right sewing positions of the cloth are adjusted by matching with the scale grids.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to an auxiliary device for a sewing machine to run in a straight line. Background Art

[0002] The sewing machine's straight-line auxiliary device is a device that keeps the fabric moving in a straight line when the sewing machine is sewing the fabric. In order to ensure the beauty of the seams and the tightness of the joints, the fabric needs to be sewn in a straight line. At this time, the sewing machine's straight-line auxiliary device can help sew the fabric and avoid the distortion of the fabric direction caused by manual movement.

[0003] After searching, it was found that a sewing machine with stable straight line movement was disclosed in a utility model patent with Chinese patent publication number CN218711353U. The sewing machine with stable straight line movement in the utility model patent ensures that the cloth is sewn in a straight line by fixing the cloth on an auxiliary translation plate and pushing the auxiliary translation plate to move horizontally in a straight line. However, the auxiliary translation plate can only move forward and backward and the width range is fixed. Among them, the spacing between the first clamping component and the second clamping component as a structure for fixing the cloth cannot be adjusted, that is, the sewing position of the cloth in the left and right directions cannot be adjusted. Therefore, there are certain inconveniences in the process of sewing the cloth, so an auxiliary device for the sewing machine to move in a straight line is proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides an auxiliary device for a sewing machine to move in a straight line, which has the advantages of conveniently adjusting the sewing position in the left-right direction of the fabric, etc., and solves the problem that the distance between the first clamping component and the second clamping component of the sewing machine that moves in a straight line stably in the above-mentioned background technology cannot be adjusted, thereby failing to adjust the stitching position of the fabric in the left-right direction.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary device for a sewing machine to walk in a straight line, comprising a sewing machine base, a top of which is provided with a line-walking auxiliary structure;

[0006] The wiring auxiliary structure includes a threaded screw, a translation seat, a lifting screw, a cross bar, a double-headed hinge block, a pressing roller, a fixed seat, an adjusting screw and a pressing pad. The sewing machine seat is internally rotatably connected with a threaded screw, the top of the sewing machine seat is slidably connected with the translation seat, the inner top wall of the translation seat is rotatably connected with the lifting screw, the interior of the translation seat is fixedly connected with a cross bar, the exterior of the cross bar is slidably connected with a double-headed hinge block, the bottom of the double-headed hinge block is hinged with a pressing roller, the top of the sewing machine seat is slidably connected with a fixed seat, the internal thread of the fixed seat is connected with an adjusting screw, and the bottom of the adjusting screw is rotatably connected with a pressing pad.

[0007] Furthermore, two No. 1 slide grooves are provided on the top of the sewing machine base, and the number of the threaded screws is two, which are respectively located inside the two No. 1 slide grooves. The inner left walls of the two No. 1 slide grooves are rotatably connected to the No. 1 pulleys, and the left ends of the two threaded screws are respectively fixedly connected to the right ends of the two No. 1 pulleys.

[0008] Furthermore, the two No. 1 pulleys are connected through a No. 1 belt drive, the left side of the sewing machine base is rotatably connected to a No. 1 button rod, the right end of the No. 1 button rod passes through one of the No. 1 slide grooves and is fixedly connected to the left end of one of the No. 1 pulleys, and the bottom of the translation seat is respectively connected to the external threads of the two threaded screws through two sliding blocks.

[0009] Furthermore, there are three lifting screws, the tops of the three lifting screws are fixedly connected with a No. 2 pulley, the three No. 2 pulleys are connected through a No. 2 belt drive, the top of one of the No. 2 pulleys is fixedly connected with a No. 2 button rod, and the outsides of the three lifting screws are threadedly connected with slip rings.

[0010] Furthermore, the bottoms of the three slip rings are hinged with two first support rods, the number of the double-headed hinge blocks is six, the bottoms of the six first support rods are respectively hinged to the tops of the six double-headed hinge blocks, the bottoms of the six double-headed hinge blocks are respectively hinged with second support rods, the number of the pressing rollers is three, and the bottoms of the six second support rods are respectively hinged to the tops of the three pressing rollers.

[0011] Furthermore, the translation seat and the fixed seat are both C-shaped structures, and a No. 2 slide groove with a T-shaped structure is provided on the top of the sewing machine seat. The No. 2 slide groove is a front-to-back through structure, and two T-shaped blocks are fixedly connected to the bottom of the fixed seat. Both of the two T-shaped blocks are slidably connected to the inner side of the No. 2 slide groove, and the top of the adjusting screw passes through the inner top wall of the fixed seat and extends to the top outer side of the fixed seat.

[0012] Furthermore, the top of the sewing machine base is fixedly connected to the machine head, the right side of the machine head is rotatably connected to a rotating handwheel, the left bottom of the machine head is movably connected to a machine needle, the left bottom of the machine head is movably connected to a presser foot, a needle hole slot is provided on the top of the sewing machine base, the needle and the presser foot are both located directly above the needle hole slot, and a scale grid is provided on the top of the sewing machine base.

[0013] Beneficial Effects

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The auxiliary device of the sewing machine for straight-line movement passes one side of the cloth through the fixed seat and the translation seat respectively, and then the No. 2 button rod is turned to drive the lifting screw through the No. 2 pulley, so that the lifting screw drives the first support rod at the bottom to tilt and swing, and the double-headed hinge block on the cross bar moves synchronously in opposite or reverse directions, so that the pressing roller moves up and down under the tilting and swinging of the second support rod to press the cloth, and then the adjusting screw is turned to make the pressing pad tightly press the other side of the cloth, and at this time, the fixed seat is pushed to make the cloth move backward with the fixed seat, thereby ensuring that the machine needle performs straight-line sewing.

[0016] 2. The sewing machine has an auxiliary device for straight-line operation. When the stitching position on the left and right sides of the fabric needs to be adjusted, first turn the adjusting screw to loosen the fabric with the pressing pad, and then turn the No. 1 button rod on the left side of the sewing machine base to drive the two threaded screws to rotate synchronously through the No. 1 pulley. Since the pressing roller is in a tight contact with the fabric, it will push the fabric to move left and right, and cooperate with the scale grid to adjust the stitching position on the left and right sides of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial three-dimensional diagram of the structure of the utility model;

[0019] Figure 3 This is a cross-sectional view of the structure of the utility model;

[0020] Figure 4 It is a partial top view of the sewing machine base structure of the utility model;

[0021] Figure 5 It is a partial cross-sectional view of the sewing machine base structure of the utility model;

[0022] Figure 6 The utility model structure Figure 3 Enlarged schematic diagram at point A in the middle.

[0023] In the figure: 1. sewing machine base; 2. routing auxiliary structure; 201. threaded screw; 202. translation base; 203. lifting screw; 204. cross bar; 205. double-headed hinge block; 206. pressing roller; 207. fixed base; 208. adjusting screw; 209. pressing pad; 3. machine head; 4. rotating hand wheel; 5. needle; 6. presser foot; 7. scale grid. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0025] See also Figure 1-6 , an auxiliary device for a sewing machine to run in a straight line, comprising a sewing machine base 1, a wiring auxiliary structure 2 is arranged on the top of the sewing machine base 1, a machine head 3 is fixedly connected to the top of the sewing machine base 1, a transmission assembly is arranged inside the machine head 3, a rotating hand wheel 4 is rotatably connected to the right side of the machine head 3, the transmission assembly is fixed to the rotating hand wheel 4 and the machine needle 5 and the presser foot 6, the machine needle 5 is movably connected to the left bottom of the machine head 3, the presser foot 6 is movably connected to the left bottom of the machine head 3, the rotating hand wheel 4 is rotated to adjust the up and down positions of the machine needle 5 and the presser foot 6, a needle hole groove is arranged on the top of the sewing machine base 1, the needle hole groove facilitates the machine needle 5 to move up and down for sewing, the machine needle 5 and the presser foot 6 are both located directly above the needle hole groove, a scale grid 7 is arranged on the top of the sewing machine base 1, and the scale grid 7 is convenient for checking the moving position of the cloth.

[0026] The wiring auxiliary structure 2 includes a threaded screw 201, a translation seat 202, a lifting screw 203, a cross bar 204, a double-headed hinge block 205, a pressing roller 206, a fixed seat 207, an adjusting screw 208 and a pressing pad 209. The internal rotation of the sewing machine seat 1 is connected with the threaded screw 201, and the top of the sewing machine seat 1 is slidably connected with the translation seat 202. The No. 1 button rod is turned to drive the translation seat 202 to move left and right through the threaded screw 201. The inner top wall of the translation seat 202 is rotatably connected with the lifting screw 203. The No. 2 button rod is turned to drive the lifting screw 203 to rotate. The internal fixed connection of the translation seat 202 A cross bar 204 is connected, and a double-headed hinge block 205 is slidably connected to the outside of the cross bar 204. The lifting screw 203 drives the double-headed hinge block 205 to move in opposite or opposite directions through the slip ring and the first support rod. A pressing roller 206 is hinged at the bottom of the double-headed hinge block 205, and the double-headed hinge block 205 drives the pressing roller 206 to be raised and lowered by the second support rod. The top of the sewing machine base 1 is slidably connected to a fixed seat 207, and the internal thread of the fixed seat 207 is connected to an adjusting screw 208. The bottom of the adjusting screw 208 is rotatably connected to a pressing pad 209, and the height of the pressing pad 209 is adjusted by rotating the adjusting screw 208.

[0027] according to Figure 3 and Figure 5As shown, the two threaded screws 201 are respectively located inside the two No. 1 slide grooves, and the left ends of the two threaded screws 201 are connected to the No. 1 pulleys, the two No. 1 pulleys are connected through a No. 1 belt drive, and the No. 1 button rod on the left side of the sewing machine base 1 is fixedly connected to one of the No. 1 pulleys.

[0028] according to Figure 2 and Figure 3 As shown, by rotating the No. 1 button rod to drive the two No. 1 pulleys, the two No. 1 pulleys are used to synchronously drive the two threaded screws 201, and sliders are fixed to the bottom front side and the bottom rear side of the translation seat 202. The two sliders respectively penetrate the two No. 1 slide grooves and are respectively connected to the external threads of the two threaded screws 201. The two threaded screws 201 are used to drive the translation seat 202 to move left and right.

[0029] according to Figure 3 and Figure 6 As shown, the tops of the three lifting screws 203 are all connected to a No. 2 pulley, and the three No. 2 pulleys are connected through a No. 2 belt drive. The top of one of the No. 2 pulleys is connected to a No. 2 button rod, and the three lifting screws 203 are driven to rotate synchronously by rotating the No. 2 button rod.

[0030] according to Figure 3 and Figure 6 As shown, the outsides of the three lifting screws 203 are all threadedly connected with slip rings, and the bottoms of the three slip rings are hinged with two first support rods. The bottoms of the six first support rods are respectively hinged to the tops of the six double-headed hinge blocks 205. When the lifting screws 203 drive the slip rings to move up and down, they can drive the bottoms of the first support rods to tilt and swing, thereby causing the double-headed hinge blocks 205 to slide towards or away from each other.

[0031] according to Figure 3 and Figure 6 As shown, the bottoms of the six double-headed hinged blocks 205 are hinged with second support rods, and the bottoms of the six second support rods are respectively hinged to the tops of the three pressing rollers 206. When the double-headed hinged blocks 205 slide toward or away from each other, the tops of the second support rods are driven to tilt and swing, thereby driving the pressing rollers 206 to move up and down.

[0032] according to Figure 2 As shown, the front side of the pressing pad 209 is slidably connected to the inner front wall of the fixed seat 207, and the adjusting screw 208 is rotated to drive the pressing pad 209 to move downward to press the cloth. The two T-shaped blocks at the bottom of the fixed seat 207 are respectively slidably connected to the No. 2 slide groove of the T-shaped structure, pushing the fixed seat 207 to slide back and forth, driving the cloth to move in a straight line back and forth.

[0033] In summary, the auxiliary device for the sewing machine to go in a straight line, passes one side of the cloth through the fixed seat 207 and the translation seat 202 respectively, and then rotates the second button rod to drive the lifting screw 203 through the second pulley, so that the lifting screw 203 drives the first support rod at the bottom to tilt and swing, and the double-headed hinge block 205 on the cross bar 204 moves synchronously in opposite or reverse directions, so that the pressing roller 206 moves up and down under the tilting and swinging of the second support rod to press the cloth, and then rotates the adjusting screw 208 to make the pressing pad 209 tightly press the other side of the cloth, and at this time pushes the fixed seat 207 to make the cloth move to the rear side with the fixed seat 207, thereby ensuring When the needle 5 performs straight stitching and needs to adjust the stitch position in the left and right directions of the fabric, first turn the adjusting screw 208 to make the pressing pad 209 loosen the fabric, then turn the No. 1 button rod on the left side of the sewing machine base 1, and drive the two threaded screws 201 to rotate synchronously through the No. 1 pulley. Since the pressing roller 206 is in a tight state with the fabric, it will push the fabric to move left and right, and cooperate with the scale grid 7 to adjust the stitch position of the fabric. This solves the problem that the spacing between the first clamping assembly and the second clamping assembly of the sewing machine that stably moves in a straight line in the above-mentioned background technology cannot be adjusted, thereby failing to adjust the stitch position of the fabric in the left and right directions.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] 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. An auxiliary device for a sewing machine to move in a straight line, comprising a sewing machine base (1), characterized in that: A thread routing auxiliary structure (2) is provided on the top of the sewing machine base (1); The wiring auxiliary structure (2) comprises a threaded screw (201), a translation seat (202), a lifting screw (203), a cross bar (204), a double-headed hinge block (205), a pressing roller (206), a fixed seat (207), an adjusting screw (208) and a pressing pad (209); the threaded screw (201) is rotatably connected inside the sewing machine seat (1); the top of the sewing machine seat (1) is slidably connected to the translation seat (202); the inner top wall of the translation seat (202) is rotatably connected to the lifting screw (203). The lowering screw (203) is fixedly connected to a cross bar (204) inside the translation seat (202), the cross bar (204) is slidably connected to a double-headed hinge block (205) outside, the double-headed hinge block (205) is hingedly connected to a pressing roller (206) at the bottom, the top of the sewing machine seat (1) is slidably connected to a fixed seat (207), the internal thread of the fixed seat (207) is connected to an adjusting screw (208), and the bottom of the adjusting screw (208) is rotatably connected to a pressing pad (209).

2. The auxiliary device for a sewing machine to move in a straight line according to claim 1, characterized in that: The top of the sewing machine base (1) is provided with two No. 1 slide grooves, the number of the threaded screw rods (201) is two and they are respectively located inside the two No. 1 slide grooves, the inner left walls of the two No. 1 slide grooves are rotatably connected to the No. 1 pulleys, and the left ends of the two threaded screw rods (201) are respectively fixedly connected to the right ends of the two No. 1 pulleys.

3. The auxiliary device for a sewing machine to move in a straight line according to claim 2, characterized in that: The two No. 1 pulleys are connected through a No. 1 belt transmission, the left side of the sewing machine seat (1) is rotatably connected to a No. 1 button rod, the right end of the No. 1 button rod passes through one of the No. 1 slide grooves and is fixedly connected to the left end of one of the No. 1 pulleys, and the bottom of the translation seat (202) is respectively connected to the external threads of the two threaded screws (201) through two sliding blocks.

4. The auxiliary device for a sewing machine to move in a straight line according to claim 1, characterized in that: The number of the lifting screws (203) is three, and the tops of the three lifting screws (203) are all fixedly connected to a No. 2 pulley, and the three No. 2 pulleys are connected through a No. 2 belt drive, and the top of one of the No. 2 pulleys is fixedly connected to a No. 2 button rod, and the outsides of the three lifting screws (203) are all threadedly connected to a slip ring.

5. The auxiliary device for a sewing machine to move in a straight line according to claim 4, characterized in that: The bottoms of the three sliding rings are each hinged with two first support rods, the number of the double-headed hinge blocks (205) is six, the bottoms of the six first support rods are respectively hinged to the tops of the six double-headed hinge blocks (205), the bottoms of the six double-headed hinge blocks (205) are each hinged with a second support rod, the number of the pressing rollers (206) is three, the bottoms of the six second support rods are respectively hinged to the tops of the three pressing rollers (206).

6. The auxiliary device for a sewing machine to move in a straight line according to claim 1, characterized in that: The translation seat (202) and the fixed seat (207) are both C-shaped structures. The top of the sewing machine seat (1) is provided with a No. 2 slide groove of a T-shaped structure. The No. 2 slide groove is a front-to-back through structure. The bottom of the fixed seat (207) is fixedly connected with two T-shaped blocks. Both of the two T-shaped blocks are slidably connected to the inner side of the No. 2 slide groove. The top of the adjusting screw (208) passes through the inner top wall of the fixed seat (207) and extends to the outer side of the top of the fixed seat (207).

7. The auxiliary device for a sewing machine to move in a straight line according to claim 1, characterized in that: The top of the sewing machine base (1) is fixedly connected to a machine head (3), the right side of the machine head (3) is rotatably connected to a rotating hand wheel (4), the left bottom of the machine head (3) is movably connected to a machine needle (5), the left bottom of the machine head (3) is movably connected to a presser foot (6), a needle hole slot is provided on the top of the sewing machine base (1), the needle (5) and the presser foot (6) are both located directly above the needle hole slot, and a scale grid (7) is provided on the top of the sewing machine base (1).

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