Automatic shuttle changing mechanism of sewing machine

Abstract

The utility model discloses an automatic shuttle changing mechanism of a sewing machine, belongs to the technical field of sewing machines, and aims to solve the technical problem of low shuttle peg changing efficiency of the sewing machine in the prior art. The automatic shuttle changing mechanism of the sewing machine comprises a base, a shuttle pushing mechanism and a shuttle withdrawing mechanism, a sliding seat is slidably assembled at the top of the base, an impact electromagnet used for pushing the sliding seat to translate along the base is assembled at one end of the base, and the end, away from the impact electromagnet, of the sliding seat extends out of the base and is provided with a supporting plate at the bottom. The shuttle retreating mechanism comprises a clamping hand assembled on the supporting plate, and a magnet block capable of attracting the shuttle peg is embedded in the clamping hand. According to the automatic shuttle changing mechanism of the sewing machine, automatic shuttle changing of the sewing machine can be achieved, shuttle changing of the sewing machine is more efficient, the problems that a manual shuttle changing mode is low in efficiency and large in working intensity, and the production efficiency is affected are solved, and the overall structure is simple and reasonable, stable, reliable and durable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewing machine technical field, concretely relates to a sewing machine automatic shuttle changing mechanism. BACKGROUND

[0002] At present, in the face of the current intelligent robot sewing, the pipeline type work, the sewing machine relies on the bobbin to realize the interlacing sewing of the top thread and the bottom thread, and finally completes the sewing work. After the bottom thread on the bobbin is used up, a new bobbin full of bottom thread needs to be replaced to continue sewing. In addition, other different colored threads, other different thickness threads or other material threads and the like may be required in the process of sewing. The current common practice is manual replacement. However, the manual replacement is low in efficiency and low in automation, and the operation strength of replacing the bobbin is large, and the number of operators also needs to be increased accordingly, thereby increasing the labor cost and greatly affecting the production efficiency. Therefore, the present application provides a sewing machine automatic shuttle changing mechanism. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a sewing machine automatic shuttle changing mechanism, which aims to solve the technical problem of low efficiency of replacing the bobbin under the prior art.

[0004] In order to solve the above technical problem, the utility model provides a sewing machine automatic shuttle changing mechanism, which comprises a base, a shuttle pushing mechanism and a shuttle withdrawing mechanism. The top of the base is slidably provided with a sliding seat. One end of the base is provided with an impact electromagnet for pushing the sliding seat to translate along the base. The end of the sliding seat away from the impact electromagnet extends out of the base and is provided at the bottom with a supporting plate. The shuttle withdrawing mechanism comprises a clamping hand provided on the supporting plate, and a magnet block capable of adsorbing the bobbin is embedded on the clamping hand. The shuttle pushing mechanism comprises a bobbin storage cylinder fixedly provided at the top of the sliding seat towards the end of the shuttle withdrawing mechanism, and a rack slidably provided on one side of the bobbin storage cylinder. The rack and the bobbin storage cylinder are distributed along the length direction of the sliding seat. The end of the rack towards the bobbin storage cylinder is provided with a push handle embedded in the bobbin storage cylinder. The top of the sliding seat is provided with a first motor. The output shaft of the first motor is provided with a gear. The gear is engaged with the rack.

[0005] Preferably, the top of the sliding seat is provided with a first sliding rail along the length direction. The rack is slidably matched with the first sliding rail. The side of the base towards the rack is fixedly provided with a limiting arm. The top end of the limiting arm is bent upwards towards the rack and is provided with a limiting block.

[0006] Preferably, the side of the bobbin storage cylinder towards the rack is provided with a guide groove along the length direction. The push handle extends into the bobbin storage cylinder through the guide groove.

[0007] Preferably, the upper surface of the base is provided with a second sliding rail along the length direction. The sliding seat is slidably matched with the second sliding rail.

[0008] Preferably, the slide is provided with a connecting block at one end close to the impact electromagnet, and the impact end of the impact electromagnet is connected with the connecting block.

[0009] Preferably, the clamping hand is rotatably assembled on a support plate, and the support plate is provided with a second motor for driving the clamping hand to rotate.

[0010] Preferably, the support plate is further provided with a shuttle withdrawing plate, and an end of the shuttle withdrawing plate is provided with a shuttle withdrawing tooth capable of pushing the bobbin off the clamping hand.

[0011] Preferably, the rack is provided with a baffle at one end away from the bobbin storage cylinder, and the top of the slide is provided with a stop block for limiting the baffle.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a shuttle withdrawing mechanism and a shuttle pushing mechanism are arranged, the impact electromagnet impacts the connecting block and drives the slide to move forward and backward along the base, the magnet block on the clamping hand uses magnetic force to suck the bobbin out of the sewing machine, the second motor is started to drive the clamping hand to rotate downward, the shuttle withdrawing tooth on the shuttle withdrawing plate can force the bobbin sucked out of the clamping hand to fall off, and automatic shuttle withdrawing operation can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0015] Figure 1 It is the overall structure schematic view of the utility model;

[0016] Figure 2 It is the structure schematic view of another view of the utility model;

[0017] Figure 3 It is the disassembled structure schematic view of the utility model;

[0018] Figure 4 It is the structural schematic view of the shuttle pushing mechanism in the utility model;

[0019] Figure 5 It is the structural schematic view of the base in the utility model;

[0020] Figure 6 It is the structural schematic view of the shuttle withdrawing mechanism in the utility model;

[0021] Figure 7 It is the structural schematic view of the support plate in the utility model;

[0022] Figure 8 It is the structural schematic view of the shuttle withdrawing plate in the utility model.

[0023] The marks in the drawing are: 1, base; 2, sliding seat; 3, shuttle storage cylinder; 4, first motor; 5, gear; 6, rack; 7, push handle; 8, impact electromagnet; 9, shuttle withdrawing mechanism; 10, shuttle withdrawing plate; 11, support plate; 12, second motor; 13, guide groove; 14, first sliding rail; 15, connecting block; 16, limiting arm; 17, second sliding rail; 18, stop block; 19, baffle; 20, limiting block; 21, clamping hand; 22, magnet block; 23, shuttle withdrawing tooth. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] The embodiment provides a sewing machine automatic shuttle changing mechanism, and a structural schematic view is as shown in Figures 1-8As shown, the device includes a base 1, a shuttle pushing mechanism, and a shuttle retraction mechanism 9. A slide block 2 is slidably mounted on the top of the base 1. An impact electromagnet 8 for pushing the slide block 2 to move along the base 1 is mounted on one end of the base 1. The end of the slide block 2 away from the impact electromagnet 8 extends out of the base 1 and is mounted on a support plate 11 at its bottom. The shuttle retraction mechanism 9 includes a gripper 21 mounted on the support plate 11. A magnet 22 capable of attracting the bobbin is embedded in the gripper 21. The gripper 21 is rotatably mounted on the support plate 11. A device for driving the gripper 21 is mounted on the support plate 11. The second motor 12 rotates, and the support plate 11 is also equipped with a bobbin retraction plate 10. The end of the bobbin retraction plate 10 is provided with a bobbin removal tooth 23 that can push the bobbin off the gripper 21. The impact electromagnet 8 impacts the connecting block 15, which pushes the slide 2 to move forward and backward along the base 1. The magnet block 22 on the gripper 21 uses magnetic force to pull the bobbin off the sewing machine. The second motor 12 is started to drive the gripper 21 to rotate downward. The bobbin removal tooth 23 on the bobbin retraction plate 10 can force the bobbin pulled off the gripper 21 to fall off, which can realize automatic bobbin retraction operation.

[0026] In a further embodiment, the shuttle pushing mechanism includes a shuttle storage cylinder 3 fixedly mounted on the top of the slide block 2 facing the end of the shuttle retraction mechanism 9, and a rack 6 slidably mounted on one side of the shuttle storage cylinder 3. The rack 6 and the shuttle storage cylinder 3 are distributed along the length direction of the slide block 2. A push handle 7 embedded in the shuttle storage cylinder 3 is provided at the end of the rack 6 facing the shuttle storage cylinder 3. A first motor 4 is mounted on the top of the slide block 2. A gear 5 is mounted on the output shaft of the first motor 4. The gear 5 meshes with the rack 6. The replacement shuttle core is mounted in the shuttle storage cylinder 3. After the clamp 21 rotates downward, it is misaligned with the shuttle storage cylinder 3 to create space, which strikes the electromagnet 8 to push the slide block 2 forward. The first motor 4 is started to drive the gear 5 to rotate, which drives the rack 6 to push the push handle 7 toward the shuttle storage cylinder 3, thereby inserting and pushing the replacement shuttle core in the shuttle storage cylinder 3, which can realize automatic shuttle loading operation.

[0027] In this embodiment, a first slide rail 14 is provided on the top of the slide block 2 along its length direction. The rack 6 slides in cooperation with the first slide rail 14. A limiting arm 16 is fixed on the side of the base 1 facing the rack 6. The top of the limiting arm 16 is bent upward toward the rack 6 and fitted with a limiting block 20 for upper limit positioning of the rack 6. A guide groove 13 is provided on the side of the shuttle cylinder 3 facing the rack 6 along its length direction. The push handle 7 passes through the guide groove 13 and extends into the shuttle cylinder 3. A second slide rail 17 is provided on the upper surface of the base 1 along its length direction. The slide block 2 slides in cooperation with the second slide rail 17. A connecting block 15 is provided on the end of the slide block 2 facing the impact electromagnet 8. The impact end of the impact electromagnet 8 is connected to the connecting block 15. A baffle 19 is provided on the end of the rack 6 away from the shuttle cylinder 3. A stop block 18 for limiting the baffle 19 is provided on the top of the slide block 2 near the impact electromagnet 8.

[0028] Working principle: When in use, the impact electromagnet 8 impacts the connecting block 15, pushing the slide 2 to move forward and backward along the base 1, so that the magnet block 22 on the gripper 21 uses magnetic force to pull the bobbin out of the sewing machine. Then, the second motor 12 is started to drive the gripper 21 to rotate downward. The bobbin pulled out of the gripper 21 is forced to fall off by the bobbin teeth 23 on the bobbin plate 10, thus realizing the automatic bobbin unwinding operation. Furthermore, the replacement bobbin is assembled inside the bobbin storage cylinder 3. After the clamp 21 rotates downward, it is misaligned with the bobbin storage cylinder 3 to create space. At this time, the impact electromagnet 8 pushes the slide 2 forward, starts the first motor 4 to drive the gear 5 to rotate, and drives the rack 6 to push the push handle 7 towards the bobbin storage cylinder 3. The push handle 7 slides along the guide groove 13 on the side wall of the bobbin storage cylinder 3, inserting and pushing the replacement bobbin inside the bobbin storage cylinder 3, completing the automatic bobbin loading operation. Through the above automatic bobbin unloading and automatic bobbin loading processes, the automatic bobbin changing of the sewing machine can be realized, making the bobbin changing of the sewing machine more efficient. It solves the problems of low efficiency, high labor intensity and reduced production efficiency of manual bobbin changing. Moreover, the overall structure is simple and reasonable, stable, reliable and durable.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic shuttle changing mechanism for a sewing machine, comprising a base (1), a shuttle pushing mechanism, and a shuttle retraction mechanism (9), characterized in that: The base (1) is slidably fitted with a slide block (2) on its top. One end of the base (1) is fitted with an impact electromagnet (8) for pushing the slide block (2) to move along the base (1). The end of the slide block (2) away from the impact electromagnet (8) extends out of the base (1) and is fitted with a support plate (11) at its bottom. The shuttle retraction mechanism (9) includes a gripper (21) fitted on the support plate (11). The gripper (21) is fitted with a magnet block (22) that can attract the shuttle core. The shuttle pushing mechanism includes a shuttle storage cylinder (3) fixedly mounted on the top of the slide (2) at one end facing the shuttle retraction mechanism (9) and a rack (6) slidably mounted on one side of the shuttle storage cylinder (3). The rack (6) and the shuttle storage cylinder (3) are distributed along the length of the slide (2). A push handle (7) embedded in the shuttle storage cylinder (3) is provided at one end of the rack (6) facing the shuttle storage cylinder (3). A first motor (4) is mounted on the top of the slide (2). A gear (5) is mounted on the output shaft of the first motor (4). The gear (5) meshes with the rack (6).

2. The automatic shuttle changing mechanism for a sewing machine according to claim 1, characterized in that, The top of the slide block (2) is provided with a first slide rail (14) along the length direction. The rack (6) slides in cooperation with the first slide rail (14). The base (1) is fixed with a limiting arm (16) on the side facing the rack (6). The top of the limiting arm (16) is bent towards the rack (6) and fitted with a limiting block (20).

3. The automatic shuttle changing mechanism for a sewing machine according to claim 1, characterized in that, The shuttle storage cylinder (3) has a guide groove (13) along its length on the side facing the rack (6), and the push handle (7) extends into the shuttle storage cylinder (3) through the guide groove (13).

4. The automatic shuttle changing mechanism for a sewing machine according to claim 1, characterized in that, The upper surface of the base (1) is provided with a second slide rail (17) along the length direction, and the slide block (2) slides in cooperation with the second slide rail (17).

5. The automatic shuttle changing mechanism for a sewing machine according to claim 1, characterized in that, The slide (2) is provided with a connecting block (15) at one end facing the impact electromagnet (8), and the impact end of the impact electromagnet (8) is connected to the connecting block (15).

6. The automatic shuttle changing mechanism for a sewing machine according to claim 1, characterized in that, The gripper (21) is rotatably mounted on the support plate (11), and the support plate (11) is equipped with a second motor (12) for driving the gripper (21) to rotate.

7. The automatic shuttle changing mechanism for a sewing machine according to claim 6, characterized in that, The support plate (11) is also equipped with a bobbin retraction plate (10), and the end of the bobbin retraction plate (10) is provided with a bobbin retraction tooth (23) that can push the bobbin off the gripper (21).

8. The automatic shuttle changing mechanism for a sewing machine according to claim 6, characterized in that, A baffle (19) is provided at the end of the rack (6) away from the shuttle cylinder (3), and a stop block (18) for limiting the baffle (19) is provided at the top of the slide block (2) near the impact electromagnet (8).

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