Zigzag double-needle sewing machine

Abstract

The utility model relates to the technical field of sewing machines, and discloses a zigzag double-needle sewing machine which comprises a sewing machine body and sewing needles, a driving motor is arranged at the bottom inside the right side of the sewing machine body, the output end of the driving motor is connected with a first chain wheel, and a transmission chain is arranged outside the first chain wheel in a sleeved mode. And a second chain wheel is arranged above the transmission chain, the output end of the second chain wheel is connected with a fixing shaft, and a rotating disc is arranged on the left side of the fixing shaft. The transmission device has the advantages that the driving motor is started to drive the first chain wheel to rotate, so that the transmission chain is pushed to drive the second chain wheel to rotate along with the first chain wheel under the action of friction force, the fixed shaft drives the rotating disc to rotate together, and due to the fact that the rotating disc is fixedly connected with the limiting column, and the limiting column is movably connected with the connecting rod in a pin mode, the rotating disc can rotate. The rotating disc pushes the connecting rod to move up and down when rotating, so that the movable push rod moves up and down along with the connecting rod, and the sewing needle is used for sewing cloth.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a zigzag double-needle sewing machine. Background Art

[0002] Cloth needs to be sewn to make clothing, backpacks and other cloth products. The traditional sewing method is manual sewing. However, manual sewing takes a long time and sewing errors may occur during the long sewing process, resulting in the need to remove the stitches and re-sewing. Therefore, sewing machines are used to replace manual sewing to improve the production time of cloth products.

[0003] After searching, a zigzag double-needle sewing machine with a publication number of CN219490361U was found. The utility model relates to the technical field of sewing machines and discloses a zigzag double-needle sewing machine, including a mounting part, a clamping mechanism is arranged on the inner wall of the mounting part, and the clamping mechanism includes: spring 1, contact block 1, spring 2, contact block 2; a fastening mechanism is arranged on the inner wall of the mounting part, and the fastening mechanism includes: an extrusion block, one side of the contact block 2 is fixed to a long rod, and the long rod is fixed to one side of the extrusion block; spring 3, the inner wall of the mounting part is fixed to one end of spring 3; a balance block, the other end of the spring 3 is fixed to the balance block; a transmission rod, the inner wall of the mounting part is threadedly connected to the transmission rod. The zigzag double-needle sewing machine is provided with a fastening mechanism, the transmission rod is rotated, the protruding part of the transmission rod contacts the extrusion block, the extrusion block moves toward the direction of the needle, and the extrusion block drives the contact block 2 to fix the needle through the long rod, and the two needles are fixed at the same time, which plays the role of fixing the double needles at the same time.

[0004] The existing sewing machines have the following problems:

[0005] Current sewing machines all use a pedal to drive a rotating wheel to rotate, so that the sewing needle moves up and down to sew the cloth. However, the sewing needles of traditional sewing machines are directly fixed to the sewing machine by bolts. When the sewing needle is damaged, it is troublesome to disassemble and replace it. During sewing, the cloth is easy to slide on the sewing machine, resulting in deviation in the sewing position, thereby affecting the quality of the cloth product.

[0006] In view of the above problems, we propose a zigzag double-needle sewing machine. Utility Model Content

[0007] The purpose of the utility model is to provide a zigzag double-needle sewing machine, which can solve the problems raised in the above-mentioned background technology.

[0008] The above technical purpose of the utility model is achieved through the following technical solutions: a zigzag double-needle sewing machine, comprising a sewing machine body and a sewing needle, a driving motor is arranged at the bottom of the right inner side of the sewing machine body, the output end of the driving motor is connected to a first sprocket, the outer sleeve of the first sprocket is provided with a transmission chain, a second sprocket is arranged above the transmission chain, the output end of the second sprocket is connected to a fixed shaft, a rotating disk is arranged on the left side of the fixed shaft, a limiting column is arranged on the left side of the rotating disk, the outer sleeve of the limiting column is provided with a connecting rod, a movable sleeve is arranged below the connecting rod, a fixed column is passed through the inside of the movable sleeve, and a movable push rod is arranged on the left side of the fixed column.

[0009] The utility model is further configured as follows: the driving motor is fixedly connected to the first sprocket, the first sprocket is chain-driven with the second sprocket via a transmission chain, the second sprocket is fixedly connected to the fixed shaft, the fixed shaft is fixedly connected to the rotating disk, the rotating disk is fixedly connected to the limiting column, the limiting column is movably pin-connected to the connecting rod, the connecting rod is fixedly connected to the movable sleeve, the movable sleeve is fixedly pin-connected to the fixed column, and the fixed column is fixedly connected to the movable push rod.

[0010] By adopting the above technical solution, the driving motor 2 is started to drive the first sprocket 3 to rotate, thereby pushing the transmission chain 4 under the action of friction to drive the second sprocket 5 to rotate, so that the fixed shaft 6 drives the rotating disk 7 to rotate together. Since the rotating disk 7 is fixedly connected to the limit column 8, and the limit column 8 is movably pinned to the connecting rod 9, the rotating disk 7 pushes the connecting rod 9 to move up and down when rotating, so that the movable push rod 11 moves up and down accordingly, and the sewing needle 19 is used to sew the cloth.

[0011] The utility model is further configured as follows: a mounting frame is provided at the bottom of the movable push rod, a bidirectional screw is provided at the top inside the mounting frame, a rotating handle is connected to the input end of the bidirectional screw, screw sleeve blocks are sleeved on both sides of the outside of the bidirectional screw, a clamping plate is provided below the screw sleeve block, a fixing spring is provided on the side of the clamping plate away from the central axis of the mounting frame, a fixing block is provided on the side of the clamping plate close to the central axis of the mounting frame, sewing needles are pierced on both sides of the bottom of the mounting frame, a fixing groove is provided above the side of the sewing needle away from the central axis of the mounting frame, and a guide plate is provided at the rear of the mounting frame.

[0012] The utility model is further configured as follows: the movable push rod is fixedly connected to the mounting frame, the rotating handle is fixedly connected to the bidirectional screw rod, the bidirectional screw rod is threadedly matched with the screw rod sleeve block, the screw rod sleeve block is fixedly connected to the clamping plate, the clamping plate is elastically connected to the mounting frame through a fixing spring, the clamping plate is fixedly connected to the fixing block, the fixing block is adapted to the fixing groove, and the guide plate is fixedly connected to the sewing machine body.

[0013] By adopting the above technical solution, when the sewing needle 19 is installed, the sewing needle 19 is inserted into the installation frame 12, and the rotating handle 14 is rotated to drive the bidirectional screw rod 13 to rotate accordingly, and the screw rod sleeve blocks 15 on both sides are pushed to move toward each other under the action of the thread, so that the clamping plate 16 moves accordingly, and the fixing block 18 is inserted into the fixing groove 20, so that the sewing needle 19 is fixedly installed under the elastic force of the fixing spring 17.

[0014] The utility model is further configured as follows: a supporting base plate is provided at the bottom of the sewing machine body, a sewing plate is provided at the middle of the top left side of the supporting base plate, a rubber pad is provided inside the sewing plate, a clamping base is provided behind the sewing plate, a fixed roller is provided below the clamping base, a pressure roller is provided above the fixed roller, movable frames are provided on both sides of the pressure roller, a pull rod is provided above the movable frame, a pressure spring is provided above the pull rod, a movable sleeve block is provided on the side of the movable frame away from the central axis of the clamping base, and a supporting slide rod is provided inside the movable sleeve block.

[0015] The utility model is further configured as follows: the sewing machine body is fixedly connected to the supporting base plate, the supporting base plate is fixedly connected to the sewing plate, the sewing plate is fixedly connected to the rubber pad, the supporting base plate is fixedly connected to the clamping base, the clamping base is movably pin-connected to the fixed roller, the movable frame is movably pin-connected to the clamping roller, the movable frame is fixedly connected to the pull rod, the pull rod is elastically connected to the clamping base through a compression spring, the movable frame is fixedly connected to the movable sleeve block, and the movable sleeve block passes through the supporting slide rod.

[0016] By adopting the above technical solution, when sewing, the pull rod 29 is pulled to make the movable frame 28 move up along the supporting slide bar 32, so that the pressing roller 27 moves up accordingly. The wrinkles of the cloth are smoothed under the action of the pressing roller 27 and the fixed roller 26 and placed on the sewing plate 23. The pull rod 29 is released. Since the pull rod 29 is elastically connected to the clamping base 25 through the pressing spring 30, under the elastic force of the pressing spring 30, the movable frame 28 is pushed to drive the pressing roller 27 to move down along the supporting slide bar 32, and cooperate with the fixed roller 26 below to press and fix the cloth to prevent the cloth from deviating during sewing. The rubber pad 24 is provided to prevent the needle from being blunted due to long-term up and down movement on the sewing plate 23 during sewing.

[0017] The beneficial effects of the utility model are:

[0018] The utility model drives the motor to start and drives the first sprocket to rotate, thereby pushing the transmission chain to drive the second sprocket to rotate under the action of friction force, so that the fixed shaft drives the rotating disk to rotate together, and since the rotating disk is fixedly connected to the limit column, and the limit column is movably pinned to the connecting rod, the rotating disk pushes the connecting rod to move up and down when it rotates, so that the movable push rod moves up and down accordingly, and the sewing needle is used to sew the cloth.

[0019] When the sewing needle is installed, the sewing needle is inserted into the installation frame, and the rotating handle is rotated to drive the bidirectional screw rod to rotate accordingly, and the screw rod sleeve blocks on both sides are pushed to move toward each other under the action of the thread, so that the clamping plate moves accordingly, and the fixing block is inserted into the fixing groove, so that the sewing needle is fixedly installed under the elastic force of the fixing spring.

[0020] When the utility model is sewing, the pull rod is pulled to make the movable frame move up along the supporting slide rod, so that the pressing roller moves up accordingly, and the cloth is placed on the sewing board with wrinkles smoothed under the action of the pressing roller and the fixed roller, and the pull rod is released. Since the pull rod is elastically connected to the clamping base through the pressing spring, the movable frame is pushed to drive the pressing roller to move down along the supporting slide rod under the elastic force of the pressing spring, and the cloth is pressed and fixed in cooperation with the fixed roller below to prevent the cloth from deviating during sewing, and a rubber pad is provided to prevent the needle from being blunted due to being poked on the sewing board due to long-term up and down movement during sewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0024] Figure 3 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0025] Figure 4 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0026] In the figure, 1, sewing machine body; 2, driving motor; 3, first sprocket; 4, transmission chain; 5, second sprocket; 6, fixed shaft; 7, rotating disk; 8, limiting column; 9, connecting rod; 10, movable sleeve; 11, movable push rod; 12, mounting frame; 13, two-way screw; 14, turning handle; 15, screw sleeve block; 16, clamping plate; 17, fixing spring; 18, fixing block; 19, sewing needle; 20, fixing groove; 21, guide plate; 22, supporting bottom plate; 23, sewing plate; 24, rubber pad; 25, clamping base; 26, fixed roller; 27, clamping roller; 28, movable frame; 29, pull rod; 30, clamping spring; 31, movable sleeve block; 32, supporting slide rod; 33, fixed column. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. 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.

[0028] Reference Figure 1 and Figure 2 As shown, a zigzag double-needle sewing machine comprises a sewing machine body 1 and a sewing needle 19, a driving motor 2 is arranged at the bottom of the right inner part of the sewing machine body 1, the output end of the driving motor 2 is connected to a first sprocket 3, the outer sleeve of the first sprocket 3 is provided with a transmission chain 4, a second sprocket 5 is arranged above the transmission chain 4, the output end of the second sprocket 5 is connected to a fixed shaft 6, a rotating disk 7 is arranged on the left side of the fixed shaft 6, a limiting column 8 is arranged on the left side of the rotating disk 7, a connecting rod 9 is arranged on the outer sleeve of the limiting column 8, a movable sleeve 10 is arranged below the connecting rod 9, a fixing column 33 is penetrated inside the movable sleeve 10, a movable push rod 11 is arranged on the left side of the fixing column 33, the driving motor 2 is fixedly connected to the first sprocket 3, the first sprocket 3 is chain-transmitted with the second sprocket 5 through the transmission chain 4, The second sprocket 5 is fixedly connected to the fixed shaft 6, the fixed shaft 6 is fixedly connected to the rotating disk 7, the rotating disk 7 is fixedly connected to the limiting column 8, the limiting column 8 is movably pinned to the connecting rod 9, the connecting rod 9 is fixedly connected to the movable sleeve 10, the movable sleeve 10 is fixedly pinned to the fixed column 33, the fixed column 33 is fixedly connected to the movable push rod 11, the driving motor 2 is started to drive the first sprocket 3 to rotate, thereby pushing the transmission chain 4 under the action of friction to drive the second sprocket 5 to rotate accordingly, so that the fixed shaft 6 drives the rotating disk 7 to rotate together, because the rotating disk 7 is fixedly connected to the limiting column 8, the limiting column 8 is movably pinned to the connecting rod 9, the rotating disk 7 pushes the connecting rod 9 to move up and down when it rotates, so that the movable push rod 11 moves up and down accordingly, and the sewing needle 19 is used to sew the cloth.

[0029] Reference Figure 1 , Figure 2 and Figure 3 As shown, further, a mounting frame 12 is provided at the bottom of the movable push rod 11, a bidirectional screw rod 13 is provided at the top inside the mounting frame 12, a rotating handle 14 is connected to the input end of the bidirectional screw rod 13, screw rod sleeve blocks 15 are sleeved on both sides of the outside of the bidirectional screw rod 13, a clamping plate 16 is provided below the screw rod sleeve block 15, a fixing spring 17 is provided on the side of the clamping plate 16 away from the central axis of the mounting frame 12, a fixing block 18 is provided on the side of the clamping plate 16 close to the central axis of the mounting frame 12, sewing needles 19 are pierced on both sides of the bottom of the inner part of the mounting frame 12, a fixing groove 20 is provided above the side of the sewing needle 19 away from the central axis of the mounting frame 12, and a guide plate 21 is provided at the rear of the mounting frame 12, and the movable push rod 11 is fixedly connected to the mounting frame 12. The turning handle 14 is fixedly connected to the bidirectional screw rod 13, the bidirectional screw rod 13 is threadedly matched with the screw rod sleeve block 15, the screw rod sleeve block 15 is fixedly connected to the clamping plate 16, the clamping plate 16 is elastically connected to the mounting frame 12 through the fixing spring 17, the clamping plate 16 is fixedly connected to the fixing block 18, the fixing block 18 is adapted to the fixing groove 20, and the guide plate 21 is fixedly connected to the sewing machine body 1. When the sewing needle 19 is installed, the sewing needle 19 is inserted into the mounting frame 12, and the turning handle 14 is rotated to drive the bidirectional screw rod 13 to rotate accordingly. Under the action of the thread, the screw rod sleeve blocks 15 on both sides are pushed to move toward each other, so that the clamping plate 16 moves accordingly, and the fixing block 18 is inserted into the fixing groove 20, so that the sewing needle 19 is fixedly installed under the elastic force of the fixing spring 17.

[0030] Reference Figure 1 , Figure 2 and Figure 4As shown, further, a supporting base plate 22 is provided at the bottom of the sewing machine body 1, a sewing plate 23 is provided at the middle of the top of the left side of the supporting base plate 22, a rubber pad 24 is provided inside the sewing plate 23, a clamping base 25 is provided behind the sewing plate 23, a fixed roller 26 is provided below the clamping base 25, a pressing roller 27 is provided above the fixed roller 26, movable frames 28 are provided on both sides of the pressing roller 27, and a pull rod 29 is provided above the movable frame 28. A compression spring 30 is arranged above the pull rod 29, a movable sleeve block 31 is arranged on the side of the movable frame 28 away from the central axis of the clamping base 25, a supporting slide bar 32 is arranged inside the movable sleeve block 31, the sewing machine body 1 is fixedly connected to the supporting bottom plate 22, the supporting bottom plate 22 is fixedly connected to the sewing plate 23, the sewing plate 23 is fixedly connected to the rubber pad 24, the supporting bottom plate 22 is fixedly connected to the clamping base 25, the clamping base 25 is movably pinned to the fixed roller 26, and the movable frame The movable frame 28 is movably pinned to the pressing roller 27, the movable frame 28 is fixedly connected to the pull rod 29, the pull rod 29 is elastically connected to the clamping base 25 through the pressing spring 30, the movable frame 28 is fixedly connected to the movable sleeve block 31, and the movable sleeve block 31 passes through the supporting slide bar 32. When sewing, the pull rod 29 is pulled to make the movable frame 28 move up along the supporting slide bar 32, so that the pressing roller 27 moves up accordingly, and the cloth is smoothed by the action of the pressing roller 27 and the fixed roller 26 and placed on the On the sewing plate 23, release the pull rod 29. Since the pull rod 29 is elastically connected to the clamping base 25 through the compression spring 30, under the elastic force of the compression spring 30, the movable frame 28 is pushed to drive the compression roller 27 to move downward along the supporting slide bar 32, and cooperate with the fixed roller 26 below to compress and fix the cloth to prevent the cloth from deviating during sewing. The rubber pad 24 is provided to prevent the needle from being blunted due to long-term up and down movement on the sewing plate 23 during sewing.

[0031] In the utility model, first, the driving motor 2 is started to drive the first sprocket 3 to rotate, thereby pushing the transmission chain 4 under the action of friction to drive the second sprocket 5 to rotate, so that the fixed shaft 6 drives the rotating disk 7 to rotate together. Since the rotating disk 7 is fixedly connected to the limit column 8, and the limit column 8 is movably pinned to the connecting rod 9, the rotating disk 7 pushes the connecting rod 9 to move up and down when rotating, so that the movable push rod 11 moves up and down accordingly, and the sewing needle 19 is used to sew the cloth.

[0032] Secondly, when the sewing needle 19 is to be installed, the sewing needle 19 is inserted into the mounting frame 12, and the rotating handle 14 is rotated to drive the bidirectional screw rod 13 to rotate accordingly, and the screw rod sleeve blocks 15 on both sides are pushed to move toward each other under the action of the thread, so that the clamping plate 16 moves accordingly, and the fixing block 18 is inserted into the fixing groove 20, so that the sewing needle 19 is fixedly installed under the elastic force of the fixing spring 17.

[0033] Finally, when sewing, the pull rod 29 is pulled to move the movable frame 28 up along the supporting slide bar 32, thereby moving the pressure roller 27 up accordingly. The wrinkles of the cloth are smoothed under the action of the pressure roller 27 and the fixed roller 26 and placed on the sewing plate 23. The pull rod 29 is released. Since the pull rod 29 is elastically connected to the clamping base 25 through the pressure spring 30, the elastic force of the pressure spring 30 pushes the movable frame 28 to drive the pressure roller 27 to move down along the supporting slide bar 32, and cooperates with the fixed roller 26 below to press and fix the cloth to prevent the cloth from deviating during sewing. A rubber pad 24 is provided to prevent the needle from being blunted due to long-term up and down movement on the sewing plate 23 during sewing.

[0034] 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. A zigzag double-needle sewing machine, comprising a sewing machine body (1) and a sewing needle (19), characterized in that: A driving motor (2) is arranged at the bottom of the right side of the sewing machine body (1); the output end of the driving motor (2) is connected to a first sprocket (3); a transmission chain (4) is sleeved on the outside of the first sprocket (3); a second sprocket (5) is arranged above the transmission chain (4); the output end of the second sprocket (5) is connected to a fixed shaft (6); a rotating disk (7) is arranged on the left side of the fixed shaft (6); a limiting column (8) is arranged on the left side of the rotating disk (7); a connecting rod (9) is sleeved on the outside of the limiting column (8); a movable sleeve (10) is arranged below the connecting rod (9); a fixed column (33) is inserted into the inside of the movable sleeve (10); a movable push rod (11) is arranged on the left side of the fixed column (33).

2. A zigzag double-needle sewing machine according to claim 1, characterized in that: The driving motor (2) is fixedly connected to the first sprocket (3), the first sprocket (3) is chain-driven with the second sprocket (5) through a transmission chain (4), the second sprocket (5) is fixedly connected to the fixed shaft (6), the fixed shaft (6) is fixedly connected to the rotating disk (7), the rotating disk (7) is fixedly connected to the limiting column (8), the limiting column (8) is movably pin-connected to the connecting rod (9), the connecting rod (9) is fixedly connected to the movable sleeve (10), the movable sleeve (10) is fixedly pin-connected to the fixed column (33), and the fixed column (33) is fixedly connected to the movable push rod (11).

3. A zigzag double-needle sewing machine according to claim 2, characterized in that: A mounting frame (12) is provided at the bottom of the movable push rod (11), a bidirectional screw rod (13) is provided at the top of the mounting frame (12), the input end of the bidirectional screw rod (13) is connected to a rotating handle (14), screw rod sleeve blocks (15) are sleeved on both sides of the outside of the bidirectional screw rod (13), a clamping plate (16) is provided below the screw rod sleeve block (15), a fixing spring (17) is provided on the side of the clamping plate (16) away from the central axis of the mounting frame (12), a fixing block (18) is provided on the side of the clamping plate (16) close to the central axis of the mounting frame (12), sewing needles (19) are penetrated on both sides of the bottom of the mounting frame (12), a fixing groove (20) is provided above the side of the sewing needle (19) away from the central axis of the mounting frame (12), and a guide plate (21) is provided at the rear of the mounting frame (12).

4. A zigzag double-needle sewing machine according to claim 3, characterized in that: The movable push rod (11) is fixedly connected to the mounting frame (12), the rotating handle (14) is fixedly connected to the bidirectional screw rod (13), the bidirectional screw rod (13) is threadedly matched with the screw rod sleeve block (15), the screw rod sleeve block (15) is fixedly connected to the clamping plate (16), the clamping plate (16) is elastically connected to the mounting frame (12) via a fixing spring (17), the clamping plate (16) is fixedly connected to the fixing block (18), the fixing block (18) is matched with the fixing groove (20), and the guide plate (21) is fixedly connected to the sewing machine body (1).

5. A zigzag double-needle sewing machine according to claim 4, characterized in that: A supporting base plate (22) is provided at the bottom of the sewing machine body (1), a sewing plate (23) is provided at the middle of the top left side of the supporting base plate (22), a rubber pad (24) is provided inside the sewing plate (23), a clamping base (25) is provided behind the sewing plate (23), a fixed roller (26) is provided below the clamping base (25), a pressing roller (27) is provided above the fixed roller (26), movable frames (28) are provided on both sides of the pressing roller (27), a pull rod (29) is provided above the movable frame (28), a pressing spring (30) is provided above the pull rod (29), a movable sleeve block (31) is provided on the side of the movable frame (28) away from the central axis of the clamping base (25), and a supporting slide rod (32) is provided inside the movable sleeve block (31).

6. A zigzag double-needle sewing machine according to claim 5, characterized in that: The sewing machine body (1) is fixedly connected to the supporting base plate (22), the supporting base plate (22) is fixedly connected to the sewing plate (23), the sewing plate (23) is fixedly connected to the rubber pad (24), the supporting base plate (22) is fixedly connected to the clamping base (25), the clamping base (25) is movably pin-connected to the fixed roller (26), the movable frame (28) is movably pin-connected to the pressing roller (27), the movable frame (28) is fixedly connected to the pull rod (29), the pull rod (29) is elastically connected to the clamping base (25) through a pressing spring (30), the movable frame (28) is fixedly connected to the movable sleeve block (31), and the movable sleeve block (31) passes through the supporting slide rod (32).

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