A flat car with needle head replacement

Abstract

The present application belongs to the field of textile technology, especially a flat car with needle head convenient to replace. In the actual operation, if the damaged needle head needs to be replaced, or different types of needles need to be replaced according to different materials, the above steps need to be repeated, and the step of loosening the bolt is inconvenient to operate, other tools need to be used, the operation steps are complicated, or the processing progress is affected because the auxiliary tool cannot be found in time. The present application provides the following scheme, which includes a flat car body; a mounting block is arranged inside the flat car body. In the present application, the device can realize the function of replacing the needle without the help of other tools, and different types of needles can be arranged in the rotating drum. Whether the damaged needle body needs to be replaced or different types of needles need to be replaced according to actual needs, they can be easily replaced. A series of work can be completed only by using the handle and the bolt, the operation is very simple and fast, and the efficiency of replacing the needle is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and in particular to a flatbed sewing machine that facilitates needle replacement. Background Technology

[0002] A flatbed sewing machine is a device that allows for easy needle replacement. Also known as a single-needle flatbed sewing machine, it primarily uses a single thread to create a stitch on the fabric, allowing one or more layers of fabric to interweave or sew together. The flatbed sewing machine is the most basic type of sewing equipment, producing neat, beautiful, even, flat, and strong stitches. It also offers fast sewing speeds and is easy to operate.

[0003] However, the existing flatbed sewing machine has the following defects when changing needles:

[0004] 1. First, use a screwdriver or other tools to loosen the bolt that secures the needle. Then, move the needle that needs to be replaced downwards to remove it. Insert the new needle and tighten the bolt again with the appropriate tools to secure the needle and complete the replacement.

[0005] 2. In actual operation, if a damaged needle needs to be replaced, or a different model of needle needs to be replaced according to different materials, the above steps need to be repeated. Loosening the bolt is inconvenient and requires the use of other tools. It cannot be replaced directly, which increases the complexity of the operation steps, or affects the processing progress due to the inability to find auxiliary tools in time.

[0006] To address the aforementioned problems, this invention proposes a flatbed cart that facilitates needle replacement. Summary of the Invention

[0007] This invention provides a flatbed cart for easy needle replacement, solving the problems of existing technologies that require loosening the bolts securing the needle with a screwdriver or other tools, moving the needle to be replaced downwards to remove it, inserting the new needle, and then tightening the bolts again with the appropriate tools to fix the needle in place. In practice, replacing a damaged needle or a different model needle based on different materials requires repeating the above steps. Furthermore, loosening the bolts is inconvenient, requires the use of other tools, and cannot be done directly, increasing the complexity of the operation and potentially affecting the processing progress due to the inability to find auxiliary tools in a timely manner.

[0008] This invention provides the following technical solution:

[0009] A flatbed cart for easy needle replacement includes:

[0010] Flat car body;

[0011] Mounting block, which is disposed inside the flatcar body;

[0012] A fixed sleeve is fixedly connected to the bottom of the mounting block. The inner wall of the fixed sleeve is threaded with a mounting cylinder. The bottom of the mounting cylinder is fixedly connected to a top plate. The bottom of the top plate is rotatably connected to a movable plate.

[0013] A rotating drum, which is fixedly connected to the bottom of a movable plate;

[0014] Multiple needles are disposed inside the rotating cylinder;

[0015] A base plate is rotatably connected to the bottom of the rotating cylinder, and a needle outlet hole is provided on the top of the base plate, which cooperates with the needle body;

[0016] A needle changing assembly, which is fixedly connected to one side of the base plate and is used to enable quick needle changing;

[0017] A clamping assembly, which is fixedly connected to the bottom of the base plate and used to clamp the needle body;

[0018] A limiting component, comprising components fixedly connected to the bottom of a movable plate and used to limit the needle body.

[0019] In one possible design, the needle changing assembly includes a support plate fixedly connected to one side, a sliding groove on one side of the support plate, an elongated groove on one side of the rotating cylinder, and an arc-shaped groove on the outer wall of the rotating cylinder.

[0020] In one possible design, the clamping assembly includes two upright plates fixedly connected to the bottom of the base plate and arranged symmetrically. Each of the two upright plates has a bolt threaded through one side, and a clamping plate is rotatably connected to one end of the bolt. The tops of the two clamping plates are slidably connected to the bottom of the base plate, and both clamping plates cooperate with the needle body.

[0021] In one possible design, the limiting assembly includes multiple limiting sleeves symmetrically arranged and fixedly connected to the bottom of the movable plate. Multiple fixing blocks symmetrically arranged are fixedly connected to the inner wall of the rotating cylinder. A circular hole is formed at the top of each fixing block. The limiting sleeves and the circular hole cooperate with the needle body. An operating rod is slidably connected to the inner wall of the sliding groove. The operating rod cooperates with a long groove and an arc-shaped groove. A limiting block is fixedly connected to one side of the operating rod. A cavity is formed inside the limiting block. A limiting groove is formed on one side of the limiting block, and the limiting groove communicates with the cavity. Two auxiliary plates symmetrically arranged are fixedly connected to the outer wall of the needle body. An installation cavity is formed on one side of each auxiliary plate. A fixing plate is fixedly connected to the inner wall of the mounting cavity. A round rod slides through one side of the fixing plate. A protrusion is fixedly connected to one end of the round rod. The protrusion engages with a limiting groove. A second spring is fixedly connected between the sides of the fixing plate and the protrusion that are close to each other. The second spring is sleeved on the round rod. A second triangular block is slidably connected to the inner wall of the cavity. A top rod is fixedly connected to the top of the second triangular block. The top plate cooperates with the movable plate. A third spring is fixedly connected between the top of the second triangular block and the side of the mounting cavity that are close to each other. The third spring is sleeved on the top rod. A needle-ejecting assembly for needle ejection is fixedly connected to the bottom of the limiting block.

[0022] In one possible design, the needle-ejecting assembly includes a connecting rod fixedly connected to the bottom of the limiting block, a block fixedly connected to the bottom of the connecting rod, a plurality of symmetrically arranged support plates slidably connected to the outer wall of the rotating cylinder, a first triangular block fixedly connected to the top of the support plate, a vertical plate fixedly connected to the bottom of the support plate, and a first spring fixedly connected between the vertical plate and the side of the outer wall of the rotating cylinder that is close to each other.

[0023] In one possible design, a handle is fixedly connected to one side of the control lever, and the handle is made of non-slip rubber.

[0024] In one possible design, the top side of the limiting block is provided with a rounded corner.

[0025] In one possible design, the top of the first triangular block has a groove that engages with the block.

[0026] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0027] In this invention, during use, the handle is first pushed upwards, which moves the operating rod upwards, and the operating rod moves the limiting block upwards. Since the protrusion on the auxiliary plate side of the needle body is engaged with the limiting groove at this time, the limiting block moves the needle body upwards. When the needle body moves upwards to the point where the top of the top rod abuts against the bottom of the movable plate, the top rod moves downwards under the push of the movable plate, causing the second triangular block to move downwards. At this time, the third spring is stretched, and the second triangular block abuts against the protrusion. As the second triangular block moves downwards, the protrusion is pushed by the second triangular block and moves away from the limiting groove. At this time, the second spring is compressed, and the round rod moves away from the limiting groove, thereby releasing the engagement between the limiting block and the needle body. The handle is then released, and under the action of gravity, the handle and the operating rod move downwards.

[0028] In this invention, the handle is slightly lifted upwards, and the rotating drum is rotated to position the needle body above the needle outlet. When the square block engages with the groove, the rotation is complete. Pulling the handle downwards causes the operating rod and the limiting block to move downwards. Under the pulling force, the connecting rod and the square block engage with the first triangular block, which moves away from the rotating drum. This causes the support plate and the vertical plate to move away from the rotating drum. At this time, the first spring is stretched, and the top of the support plate no longer abuts against the bottom of the needle body. The needle body falls under the action of gravity and extends out of the needle outlet. Pulling the needle body downwards causes the protrusion to re-engage with the limiting groove, making it easy to reset the needle body when replacing it next time. Rotating the bolts on both sides causes the bolts to push the clamping plate to clamp the needle body, preventing the needle body from shifting due to high-speed vibration during operation, which would affect the weaving effect.

[0029] In this invention, the setting of the round hole and the limiting sleeve on the fixing block limits the position of the needle body, so that the needle body will not tilt or fall over during the falling or moving upward. The handle is made of non-slip rubber material to prevent the user from slipping during use and affecting the needle replacement efficiency. The top side of the limiting block is provided with a rounded corner to facilitate the engagement of the protrusion and the limiting groove.

[0030] In this invention, the device can perform needle replacement without the aid of other tools, and different types of needles can be set inside the rotating cylinder. Whether it is to replace a damaged needle or to replace a different type of needle according to actual needs, it can be easily replaced. The device can complete a series of tasks with just a handle and bolts. The components fit together tightly, and the operation is very simple and quick, effectively improving the efficiency of needle replacement. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of a flatbed cart for easy needle replacement provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram illustrating an installation method for a flatbed transfer tube that facilitates needle replacement, provided by an embodiment of the present invention.

[0033] Figure 3 This is a three-dimensional structural diagram of a needle-changing assembly on a flatbed cart that facilitates needle replacement, provided in an embodiment of the present invention.

[0034] Figure 4 This is a three-dimensional structural diagram of a clamping assembly in a flatbed carriage that facilitates needle replacement, provided in an embodiment of the present invention.

[0035] Figure 5 A schematic diagram of the internal structure of a flatbed transfer tube for easy needle replacement provided in an embodiment of the present invention;

[0036] Figure 6 This is a three-dimensional structural diagram of a limiting component in a flatbed carriage that facilitates needle replacement, provided in an embodiment of the present invention.

[0037] Figure 7 This is a three-dimensional structural diagram of a needle drop assembly on a flatbed carriage that facilitates needle replacement, provided in an embodiment of the present invention.

[0038] Figure label:

[0039] 1. Flatbed car body; 2. Rotary drum; 201. Long groove; 202. Arc groove; 3. Needle body; 4. Mounting block; 5. Fixing sleeve; 6. Mounting cylinder; 7. Top plate; 8. Movable plate; 9. Support plate; 901. Slide groove; 10. Operating lever; 11. Handle; 12. Base plate; 1201. Needle outlet hole; 13. Limiting sleeve; 14. Limiting block; 1401. Limiting groove; 1402. Cavity; 15. Top rod; 1 6. Connecting rod; 17. Square block; 18. Fixing block; 1801. Round hole; 19. Support plate; 20. First triangular block; 2001. Groove; 21. First spring; 22. Vertical plate; 23. Vertical plate; 24. Bolt; 25. Clamping plate; 26. Second spring; 27. Second triangular block; 28. Third spring; 29. ​​Protrusion; 30. Round rod; 31. Auxiliary plate; 3101. Mounting cavity; 32. Fixing plate. Detailed Implementation

[0040] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0041] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0042] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0043] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0044] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0045] Example 1

[0046] Reference Figure 1-7 A flatbed cart for easy needle replacement includes:

[0047] Flat car body 1;

[0048] Mounting block 4 is installed inside the flatcar body 1;

[0049] Fixed sleeve 5 is fixedly connected to the bottom of mounting block 4. Mounting cylinder 6 is threadedly connected to the inner wall of fixed sleeve 5. Top plate 7 is fixedly connected to the bottom of mounting cylinder 6. Movable plate 8 is rotatably connected to the bottom of top plate 7.

[0050] Rotating drum 2, the bottom of which is fixedly connected to movable plate 8;

[0051] Multiple needles 3 are arranged inside the rotating cylinder 2;

[0052] The base plate 12 is rotatably connected to the bottom of the rotating cylinder 2. The top of the base plate 12 is provided with a needle outlet hole 1201, which is matched with the needle body 3.

[0053] The needle changing assembly is fixedly connected to one side of the base plate 12 and is used to achieve quick needle changing;

[0054] A clamping assembly is fixedly connected to the bottom of the base plate 12 and is used to clamp the needle body 3;

[0055] The limiting component includes a fixed connection to the bottom of the movable plate 8 and is used to limit the needle body 3.

[0056] The above technical solution enables the device to perform needle replacement without the need for other tools, and different types of needles can be arbitrarily set inside the rotating cylinder 2. Whether it is necessary to replace a damaged needle body 3 or to replace a different type of needle according to actual needs, the device can be easily replaced, effectively improving the efficiency of needle replacement.

[0057] Reference Figure 2-3 The needle changing assembly includes a support plate 9 fixedly connected to one side, a sliding groove 901 on one side of the support plate 9, a long groove 201 on one side of the rotating cylinder 2, and an arc groove 202 on the outer wall of the rotating cylinder 2.

[0058] The above technical solution can achieve the technical effect that the device can complete a series of tasks by simply using the handle 11 and bolt 24, with tight fit between the components and very simple and quick operation.

[0059] Reference Figure 4 The clamping assembly includes two upright plates 23 fixedly connected to the bottom of the base plate 12 and arranged symmetrically. One side of each of the two upright plates 23 is threaded with a bolt 24. One end of the bolt 24 is rotatably connected to a clamping plate 25. The top of the two clamping plates 25 is slidably connected to the bottom of the base plate 12. Both clamping plates 25 cooperate with the needle body 3.

[0060] The above technical solution can achieve the technical effect of rotating the bolts 24 on both sides, so that the bolts 24 push the clamping plate 25 to clamp the needle body 3, preventing the needle body 3 from being displaced under high-speed vibration during the working process, thus affecting the textile effect.

[0061] Reference Figure 5-6 The limiting assembly includes multiple limiting sleeves 13 symmetrically arranged and fixedly connected to the bottom of the movable plate 8. Multiple fixing blocks 18 symmetrically arranged are fixedly connected to the inner wall of the rotating cylinder 2. A circular hole 1801 is opened at the top of each fixing block 18. The limiting sleeves 13 and the circular hole 1801 cooperate with the needle body 3. An operating rod 10 is slidably connected to the inner wall of the sliding groove 901. The operating rod 10 cooperates with the long groove 201 and the arc-shaped groove 202. A limiting block 14 is fixedly connected to one side of the operating rod 10. A cavity 1402 is opened inside the limiting block 14. A limiting groove 1401 is opened on one side of the limiting block 14, and the limiting groove 1401 communicates with the cavity 1402. Two auxiliary plates symmetrically arranged are fixedly connected to the outer wall of the needle body 3. An installation cavity 3101 is opened on one side of each auxiliary plate 31. A fixing plate 32 is fixedly connected to the inner wall of the mounting cavity 3101. A round rod 30 slides through one side of the fixing plate 32. A protrusion 29 is fixedly connected to one end of the round rod 30. The protrusion 29 engages with the limiting groove 1401. A second spring 26 is fixedly connected between the fixing plate 32 and the protrusion 29 on their respective sides. The second spring 26 is sleeved on the round rod 30. A second triangular block 27 is slidably connected to the inner wall of the cavity 1402. A top rod 15 is fixedly connected to the top of the second triangular block 27. The top plate 7 cooperates with the movable plate 8. A third spring 28 is fixedly connected between the top of the second triangular block 27 and the respective side of the mounting cavity 3101. The third spring 28 is sleeved on the top rod 15. A needle-ejecting assembly for needle ejection is fixedly connected to the bottom of the limiting block 14.

[0062] The above technical solution can achieve the engagement of the protrusion 29 with the limiting groove 1401, so the limiting block 14 can drive the needle body 3 to move upward, which helps the needle body 3 to reset. The setting of the round hole 1801 on the fixing block 18 and the limiting sleeve 13 makes the position of the needle body 3 limited, so that the needle body 3 will not tilt or fall over during the process of falling or moving upward.

[0063] Reference Figure 7 The needle-feeding assembly includes a connecting rod 16 fixedly connected to the bottom of the limiting block 14, a block 17 fixedly connected to the bottom of the connecting rod 16, a plurality of support plates 19 symmetrically arranged slidably connected to the outer wall of the rotating cylinder 2, a first triangular block 20 fixedly connected to the top of the support plate 19, a vertical plate 22 fixedly connected to the bottom of the support plate 19, and the same first spring 21 fixedly connected between the vertical plate 22 and the side of the outer wall of the rotating cylinder 2 that are close to each other.

[0064] The above technical solution can achieve the effect that the top of the support plate 19 no longer abuts against the bottom of the needle body 3, the needle body 3 falls under the action of gravity, extends out from the needle outlet 1201, and pulls the needle body 3 downward, so that the protrusion 29 and the limiting groove 1401 re-engage, making it convenient to reset the needle body 3 when it is replaced next time.

[0065] Example 2

[0066] Reference Figure 1-7 A flatbed cart for easy needle replacement includes:

[0067] Flat car body 1;

[0068] Mounting block 4 is installed inside the flatcar body 1;

[0069] Fixed sleeve 5 is fixedly connected to the bottom of mounting block 4. Mounting cylinder 6 is threadedly connected to the inner wall of fixed sleeve 5. Top plate 7 is fixedly connected to the bottom of mounting cylinder 6. Movable plate 8 is rotatably connected to the bottom of top plate 7.

[0070] Rotating drum 2, the bottom of which is fixedly connected to movable plate 8;

[0071] Multiple needles 3 are arranged inside the rotating cylinder 2;

[0072] The base plate 12 is rotatably connected to the bottom of the rotating cylinder 2. The top of the base plate 12 is provided with a needle outlet hole 1201, which is matched with the needle body 3.

[0073] The needle changing assembly is fixedly connected to one side of the base plate 12 and is used to achieve quick needle changing;

[0074] A clamping assembly is fixedly connected to the bottom of the base plate 12 and is used to clamp the needle body 3;

[0075] The limiting component includes a fixed connection to the bottom of the movable plate 8 and is used to limit the needle body 3.

[0076] The above technical solution enables the device to perform needle replacement without the need for other tools, and different types of needles can be arbitrarily set inside the rotating cylinder 2. Whether it is necessary to replace a damaged needle body 3 or to replace a different type of needle according to actual needs, the device can be easily replaced, effectively improving the efficiency of needle replacement.

[0077] Reference Figure 2-3 The needle changing assembly includes a support plate 9 fixedly connected to one side, a sliding groove 901 on one side of the support plate 9, a long groove 201 on one side of the rotating cylinder 2, and an arc groove 202 on the outer wall of the rotating cylinder 2.

[0078] The above technical solution can achieve the technical effect that the device can complete a series of tasks by simply using the handle 11 and bolt 24, with tight fit between the components and very simple and quick operation.

[0079] Reference Figure 4The clamping assembly includes two upright plates 23 fixedly connected to the bottom of the base plate 12 and arranged symmetrically. One side of each of the two upright plates 23 is threaded with a bolt 24. One end of the bolt 24 is rotatably connected to a clamping plate 25. The top of the two clamping plates 25 is slidably connected to the bottom of the base plate 12. Both clamping plates 25 cooperate with the needle body 3.

[0080] The above technical solution can achieve the technical effect of rotating the bolts 24 on both sides, so that the bolts 24 push the clamping plate 25 to clamp the needle body 3, preventing the needle body 3 from being displaced under high-speed vibration during the working process, thus affecting the textile effect.

[0081] Reference Figure 5-6 The limiting assembly includes multiple limiting sleeves 13 symmetrically arranged and fixedly connected to the bottom of the movable plate 8. Multiple fixing blocks 18 symmetrically arranged are fixedly connected to the inner wall of the rotating cylinder 2. A circular hole 1801 is opened at the top of each fixing block 18. The limiting sleeves 13 and the circular hole 1801 cooperate with the needle body 3. An operating rod 10 is slidably connected to the inner wall of the sliding groove 901. The operating rod 10 cooperates with the long groove 201 and the arc-shaped groove 202. A limiting block 14 is fixedly connected to one side of the operating rod 10. A cavity 1402 is opened inside the limiting block 14. A limiting groove 1401 is opened on one side of the limiting block 14, and the limiting groove 1401 communicates with the cavity 1402. Two auxiliary plates symmetrically arranged are fixedly connected to the outer wall of the needle body 3. An installation cavity 3101 is opened on one side of each auxiliary plate 31. A fixing plate 32 is fixedly connected to the inner wall of the mounting cavity 3101. A round rod 30 slides through one side of the fixing plate 32. A protrusion 29 is fixedly connected to one end of the round rod 30. The protrusion 29 engages with the limiting groove 1401. A second spring 26 is fixedly connected between the fixing plate 32 and the protrusion 29 on their respective sides. The second spring 26 is sleeved on the round rod 30. A second triangular block 27 is slidably connected to the inner wall of the cavity 1402. A top rod 15 is fixedly connected to the top of the second triangular block 27. The top plate 7 cooperates with the movable plate 8. A third spring 28 is fixedly connected between the top of the second triangular block 27 and the respective side of the mounting cavity 3101. The third spring 28 is sleeved on the top rod 15. A needle-ejecting assembly for needle ejection is fixedly connected to the bottom of the limiting block 14.

[0082] The above technical solution can achieve the engagement of the protrusion 29 with the limiting groove 1401, so the limiting block 14 can drive the needle body 3 to move upward, which helps the needle body 3 to reset. The setting of the round hole 1801 on the fixing block 18 and the limiting sleeve 13 makes the position of the needle body 3 limited, so that the needle body 3 will not tilt or fall over during the process of falling or moving upward.

[0083] Reference Figure 7The needle-feeding assembly includes a connecting rod 16 fixedly connected to the bottom of the limiting block 14, a block 17 fixedly connected to the bottom of the connecting rod 16, a plurality of support plates 19 symmetrically arranged slidably connected to the outer wall of the rotating cylinder 2, a first triangular block 20 fixedly connected to the top of the support plate 19, a vertical plate 22 fixedly connected to the bottom of the support plate 19, and the same first spring 21 fixedly connected between the vertical plate 22 and the side of the outer wall of the rotating cylinder 2 that are close to each other.

[0084] The above technical solution can achieve the effect that the top of the support plate 19 no longer abuts against the bottom of the needle body 3, the needle body 3 falls under the action of gravity, extends out from the needle outlet 1201, and pulls the needle body 3 downward, so that the protrusion 29 and the limiting groove 1401 re-engage, making it convenient to reset the needle body 3 when it is replaced next time.

[0085] Reference Figure 2-5 A handle 11 is fixedly connected to one side of the operating lever 10. The handle 11 is made of non-slip rubber.

[0086] The above technical solution can achieve the effect of making the handle 11 with non-slip rubber material to prevent the user from slipping during use and affecting the needle changing efficiency.

[0087] Reference Figure 6 The top side of the limiting block 14 is provided with a rounded corner.

[0088] The above technical solution can achieve the technical effect that the top side of the limiting block 14 has a rounded corner, which facilitates the engagement of the protrusion 29 and the limiting groove 1401.

[0089] Reference Figure 4-7 The top of the first triangular block 20 has a groove 2001, which engages with the block 17.

[0090] The above technical solution can achieve the effect of rotating the needle body 3 to be used above the needle hole 1201. When the block 17 engages with the groove 2001, the position rotation is completed, which can ensure that the corresponding needle body 3 is rotated to the correct position.

[0091] However, as is well known to those skilled in the art, the working principle and wiring method of the flatcar body 1 are commonplace and are all conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0092] The working principle and usage process of this technical solution are as follows: In use, first push the handle 11 upwards. The handle 11 drives the operating rod 10 upwards, which in turn drives the limiting block 14 upwards. Since the protrusion 29 on one side of the auxiliary plate 31 on the outer wall of the needle body 3 engages with the limiting groove 1401, the limiting block 14 drives the needle body 3 upwards. When the needle body 3 moves upwards until the top of the push rod 15 contacts the bottom of the movable plate 8, the push rod 15 moves downwards under the push of the movable plate 8, driving... The second triangular block 27 moves down, at which time the third spring 28 is stretched, and the second triangular block 27 abuts against the protrusion 29. As the second triangular block 27 moves down, the protrusion 29 is pushed by the second triangular block 27 and moves away from the limiting groove 1401. At this time, the second spring 26 is compressed, and the round rod 30 moves away from the limiting groove 1401, thereby releasing the cooperation between the limiting block 14 and the needle body 3, releasing the handle 11, and under the action of gravity, the handle 11 and the operating rod 10 move downward.

[0093] Slightly lift handle 11 upwards and rotate the rotating drum 2 to position the needle 3 to be used above the needle outlet 1201. When block 17 engages with groove 2001, the rotation is complete. Pull handle 11 downwards, causing operating rod 10 and limiting block 14 to move downwards. Under the pulling force, connecting rod 16 and block 17 engage with first triangular block 20, causing first triangular block 20 to move away from rotating drum 2. This, in turn, causes support plate 19 and vertical plate 22 to move away from rotating drum 2. When the needle moves in direction 2, the first spring 21 is stretched, and the top of the support plate 19 no longer abuts against the bottom of the needle body 3. The needle body 3 falls under the action of gravity and extends out from the needle outlet 1201. Pulling the needle body 3 downwards causes the protrusion 29 to re-engage with the limiting groove 1401, making it easy to reset the needle body 3 when it is replaced next time. Rotating the bolts 24 on both sides causes the bolts 24 to push the clamping plate 25 to clamp the needle body 3, preventing the needle body 3 from shifting under high-speed vibration during operation, which would affect the textile effect.

[0094] The setting of the round hole 1801 and the limiting sleeve 13 on the fixing block 18 limits the position of the needle body 3, so that the needle body 3 will not tilt or fall over during the falling or moving process. The handle 11 is made of non-slip rubber material to prevent the user from slipping during use and affecting the needle replacement efficiency. The top side of the limiting block 14 has a rounded corner to facilitate the engagement of the protrusion 29 with the limiting groove 1401. The outer wall of the rotating cylinder 2 can be set with corresponding labels to facilitate the recording of information of the needle body 3 at the corresponding position inside, making it more intuitive to use.

[0095] The device can change needles without the need for other tools, and different types of needles can be set in the rotating cylinder 2. Whether it is to replace a damaged needle body 3 or to replace a different type of needle according to actual needs, it can be easily replaced. The device can complete a series of tasks with just the handle 11 and the bolt 24. The parts fit together tightly, and the operation is very simple and quick, which effectively improves the efficiency of needle changing.

[0096] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A flatbed cart for easy needle replacement, characterized in that, include: Flat car body (1); Mounting block (4), said mounting block (4) is disposed inside the flatcar body (1); A fixed sleeve (5) is fixedly connected to the bottom of the mounting block (4). The inner wall of the fixed sleeve (5) is threaded with a mounting cylinder (6). The bottom of the mounting cylinder (6) is fixedly connected with a top plate (7). The bottom of the top plate (7) is rotatably connected with a movable plate (8). Rotary drum (2), the bottom of which is fixedly connected to movable plate (8); Multiple needle bodies (3) are disposed inside the rotating cylinder (2); The base plate (12) is rotatably connected to the bottom of the rotating cylinder (2). The top of the base plate (12) is provided with a needle outlet hole (1201), which is matched with the needle body (3). A needle changing assembly is fixedly connected to one side of the base plate (12) and is used to achieve quick needle changing; A clamping assembly is fixedly connected to the bottom of the base plate (12) and is used to clamp the needle body (3). A limiting component is fixedly connected to the bottom of the movable plate (8) and is used to limit the needle body (3); The needle changing assembly includes a support plate (9) fixedly connected to one side of the base plate (12), a sliding groove (901) is provided on one side of the support plate (9), a long groove (201) is provided on one side of the rotating cylinder (2), and an arc groove (202) is provided on the outer wall of the rotating cylinder (2). The clamping assembly includes two upright plates (23) fixedly connected to the bottom of the base plate (12) and arranged symmetrically. One side of each of the two upright plates (23) is threaded with a bolt (24). One end of the bolt (24) is rotatably connected to a clamping plate (25). The top of the two clamping plates (25) is slidably connected to the bottom of the base plate (12). Both clamping plates (25) cooperate with the needle body (3).

2. The flatbed cart for easy needle replacement according to claim 1, characterized in that, The limiting assembly includes multiple limiting sleeves (13) fixedly connected to the bottom of the movable plate (8) and arranged symmetrically. Multiple fixing blocks (18) are fixedly connected to the inner wall of the rotating cylinder (2) and arranged symmetrically. A circular hole (1801) is opened at the top of each fixing block (18). The limiting sleeves (13) and the circular hole (1801) cooperate with the needle body (3). An operating rod (10) is slidably connected to the inner wall of the sliding groove (901). The operating rod (10) is connected to the long groove (201) and... The arc-shaped groove (202) is matched with a limiting block (14) fixedly connected to one side of the operating rod (10). The limiting block (14) has a cavity (1402) inside and a limiting groove (1401) on one side. The limiting groove (1401) is connected to the cavity (1402). The outer wall of the needle body (3) is fixedly connected with two symmetrically arranged auxiliary plates (31). The auxiliary plates (31) have an installation cavity (3101) on one side. A fixing plate (32) is fixedly connected to the inner wall of the mounting cavity (3101). A round rod (30) slides through one side of the fixing plate (32). A protrusion (29) is fixedly connected to one end of the round rod (30). The protrusion (29) engages with the limiting groove (1401). A second spring (26) is fixedly connected between the sides of the fixing plate (32) and the protrusion (29) that are close to each other. The second spring (26) is sleeved on the round rod (30). The cavity ( The inner wall of 1402 is slidably connected to a second triangular block (27), and the top of the second triangular block (27) is fixedly connected to a top rod (15). The top plate (7) cooperates with the movable plate (8). The top of the second triangular block (27) and the side of the mounting cavity (3101) that are close to each other are fixedly connected to the same third spring (28). The third spring (28) is sleeved on the top rod (15). The bottom of the limiting block (14) is fixedly connected to a needle-out assembly for needle out.

3. A flatbed cart for easy needle replacement according to claim 2, characterized in that, The needle-out assembly includes a connecting rod (16) fixedly connected to the bottom of the limiting block (14), a block (17) fixedly connected to the bottom of the connecting rod (16), a plurality of support plates (19) symmetrically arranged slidably connected to the outer wall of the rotating cylinder (2), a first triangular block (20) fixedly connected to the top of the support plate (19), a vertical plate (22) fixedly connected to the bottom of the support plate (19), and the same first spring (21) fixedly connected between the vertical plate (22) and the side of the outer wall of the rotating cylinder (2) that are close to each other.

4. A flatbed cart for easy needle replacement according to claim 2, characterized in that, A handle (11) is fixedly connected to one side of the operating lever (10), and the handle (11) is made of non-slip rubber.

5. A flatbed cart for easy needle replacement according to claim 2, characterized in that, The top side of the limiting block (14) is provided with a rounded corner.

6. A flatbed cart for easy needle replacement according to claim 3, characterized in that, The top of the first triangular block (20) is provided with a groove (2001), which engages with the block (17).

Images