Vacuum wire suction and wire clamping cylinder unit

Abstract

The present application relates to a kind of vacuum suction thread clamp air cylinder unit, including cylinder, the cylinder front end is equipped with inclined plane, and the cylinder inside vertical center is equipped with line passageway, and the left end of the cylinder is equipped with No. passageway, and the right end of the cylinder is equipped with No. 2 passageway, and the front end of the cylinder middle part is equipped with air blowing passageway, the passageway inside No. passageway is equipped with flat top silk, the passageway inside No. 2 passageway is equipped with air cylinder, the lower end of the middle part of line passageway is symmetrically equipped with movable structure, the surface middle part of inclined plane is equipped with air extraction passageway, so that the pressure difference is formed inside and outside line passageway, realize the function of automatic suction thread;Through movable structure, the lower end of line passageway is sealed movably, to reduce the air extraction energy consumption, speed up the role of threading speed;Through No. buffer pad and No. 2 buffer pad, air blowing passageway, sewing thread is carded, prevent sewing thread to stay in line passageway, also prevent multiple sewing thread to be entangled and be beaten.

Description

Technical Field

[0001] This invention relates to the field of wire clamping cylinder unit technology, and more particularly to a vacuum wire suction and clamping cylinder unit. Background Technology

[0002] The thread clamping device of a sewing machine is located between the upper and lower thread rollers. It clamps the thread end fed by the upper thread roller to ensure that the sewing thread end smoothly enters the lower thread roller, avoiding thread breakage and weak sewing. Existing thread clamping devices have complex structures, are prone to knotting and breakage when running multiple strands of sewing thread, cannot flexibly adjust the clamping force, and mostly rely on manual threading, which tests the worker's eyesight. To solve these problems, we propose a vacuum suction thread clamping cylinder unit.

[0003] Chinese invention patent CN202011158193.5 discloses an auxiliary thread clamping mechanism for a sewing machine, including an installation structure, an auxiliary thread clamping structure, and a thread roller structure. The installation structure includes an installation plate with a fixing structure. A U-shaped groove is fixedly provided on the bottom side of the installation plate, and a sliding plate is slidably connected inside the U-shaped groove. A support plate is fixedly provided on the bottom side of the sliding plate, and a limiting structure is provided on the bottom side of the installation plate to the left of the sliding plate. The auxiliary thread clamping structure includes an installation post with a stop fixedly provided on its side. The ring has a thread limiting structure on its side. A thread clamping block is connected to the side of the mounting post on the outside of the ring via a bearing. This sewing machine auxiliary thread clamping mechanism has a simple structure and can adjust the clamping force of the thread clamping device, making it convenient to use. Moreover, the thread clamping device can be quickly installed, making it easy to disassemble and maintain. However, this invention has the following problems: First, when using multi-strand thread for thread clamping and sewing, the threads are prone to tangling and knotting, resulting in unsightly sewing. Second, it cannot achieve automatic threading, and manual threading requires a high level of skill from the worker. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by solving the technical problems of existing sewing machine thread clamping devices being unable to automatically thread the thread and multi-strand sewing threads being prone to tangling and knotting through an air extraction channel, a movable structure, a first buffer pad, and a second buffer pad.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A vacuum wire suction and clamping cylinder unit includes a cylinder body. The front end of the cylinder body has an inclined surface, and a wire passage is vertically centered inside the cylinder body. The upper and lower ends of the wire passage penetrate the surface of the cylinder body. A first channel is provided at the left end of the cylinder body, and a second channel is provided at the right end of the cylinder body. An air blowing channel is provided in the middle of the front end of the cylinder body. A flat top screw is provided inside the first channel, and a cylinder is provided inside the second channel. A movable structure is symmetrically provided at the lower middle part of the wire passage, and an air extraction channel is provided in the middle of the inclined surface.

[0007] As a preferred embodiment, the upper end of the air extraction channel is connected to an air extraction pipe, and the lower end of the air extraction channel is connected to a wire channel. Both the first channel and the second channel are connected to wire channels, and an air extraction valve is provided in the middle of the air extraction pipe.

[0008] As a preferred embodiment, a silicone layer is provided between the flat top wire and the first channel, and the right end of the flat top wire is fixedly connected to the first buffer pad. The right end of the first buffer pad is evenly distributed with rectangular grooves, and the first buffer pad and the first channel are aligned at their right ends.

[0009] As a preferred embodiment, a sealing groove is provided on the left side of the middle part of the second channel, and a sealing ring is provided in the groove, with the inner circumference of the sealing ring abutting against the cylinder.

[0010] As a preferred embodiment, the cylinder has two air inlets at the middle of the right end, and a piston rod at the left end of the cylinder. A second buffer pad is provided at the left end of the piston rod, and rectangular blocks are evenly distributed at the left end of the second buffer pad. The rectangular blocks are adapted to and connected to the rectangular groove.

[0011] As a preferred embodiment, the upper end of the air blowing channel is connected to an air blowing pipe, and the lower end of the air blowing channel is connected to a wire channel, with an air blowing valve provided in the middle of the air blowing pipe.

[0012] As a preferred embodiment, the lower inner wall of the cable passage is provided with symmetrical fixed seats, and the movable structure includes a first sheet and a second sheet, wherein the volume of the first sheet is smaller than that of the second sheet.

[0013] As a preferred embodiment, the left end of the first sheet is movably connected to the left end fixing seat, and the right end fixing seat is movably connected to the second sheet.

[0014] The beneficial effects of this invention are:

[0015] (1) In this invention, by setting an air extraction channel, the air inside the cylinder is gradually extracted through the air extraction channel, so that a pressure difference is generated inside and outside the cylinder, thereby causing the sewing thread to be gradually sucked into the thread channel, realizing the function of automatic thread suction, making threading more convenient and faster.

[0016] (2) In this invention, by setting up a movable structure, the first and second thin sheets in the movable structure are rubber sheets. During the process of the air in the cylinder being gradually drawn away through the air extraction channel, the first and second thin sheets rotate upward under the action of suction, so that the lower end of the wire passage gradually closes, thereby increasing the pressure difference at the upper end of the wire passage, thus achieving the effect of reducing air extraction energy consumption and accelerating the wire threading speed.

[0017] (3) In this invention, by setting a first buffer pad and a second buffer pad, the impact force between the piston rod of the cylinder and the flat top wire is reduced, preventing the sewing thread from breaking. When the sewing thread is continuously pulled downward, the rectangular block on the first buffer pad and the rectangular groove on the second buffer pad abut against each other, which can straighten and comb the multi-strand sewing thread, preventing the multi-strand sewing thread from getting tangled and knotted during the sewing process, thus affecting the sewing effect.

[0018] (4) In this invention, by setting up an air blowing channel, air is blown into the air blowing channel through the air blowing pipe, so that the airflow blows downward out of the thread passage, thereby making it easy for the sewing thread to pass through the cylinder and not be folded and stuck in the thread passage. On the other hand, it allows the No. 1 sheet and the No. 2 sheet to flip down smoothly, keeping the thread passage unobstructed.

[0019] In summary, this invention has the advantages of simple structure, vacuum thread suction, and automatic thread clamping, and is especially suitable for the field of sewing machine thread clamping cylinder unit technology. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used 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 those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front-view sectional view of the vacuum wire clamping cylinder unit.

[0022] Figure 2 This is a front-view sectional diagram showing the lower end of the cable passage in an unsealed state.

[0023] Figure 3 This is a schematic diagram of the vacuum wire clamping cylinder unit from the left front view.

[0024] Figure 4 This is a schematic diagram of the vacuum wire clamping cylinder unit from the right front view.

[0025] Figure 5 This is a cross-sectional view of the vacuum wire clamping cylinder unit from the left perspective.

[0026] Figure 6This is a schematic diagram of part C of the vacuum wire clamping cylinder unit.

[0027] Figure 7 This is a schematic diagram of part B of the vacuum wire clamping cylinder unit.

[0028] Figure 8 This is a schematic diagram of part A of the vacuum wire clamping cylinder unit. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1

[0031] like Figures 1 to 8 As shown, this invention provides a vacuum thread suction and clamping cylinder unit, including a cylinder body 1. The cylinder body 1 serves as the anti-collision shell for the entire cylinder unit and is the main support and storage component. The rear and lower ends of the cylinder body 1 are flat to facilitate installation on a sewing machine. The front end of the cylinder body 1 has a bevel 11 for convenient operation on the flat surface. The suction pipe 21 connects to the suction channel 2. A thread-passing channel 3 is vertically centered inside the cylinder body 1, and both ends of the thread-passing channel 3 penetrate the surface of the cylinder body 1. The upper half of the thread-passing channel 3 has a smaller diameter, while the lower half has a larger diameter. This design facilitates the smooth suction of sewing thread. A first channel 12 is located at the left end of the cylinder body 1, providing installation space for the flat-top screw 4, allowing it to fit snugly against the cylinder body 1. A second channel 13 is located at the right end of the cylinder body 1, used for installing a cylinder 5. An air blowing channel 14 is located at the center of the front end of the cylinder body 1, through which gas enters the thread-passing channel 3, allowing the thread to pass through smoothly. The thread passage 3 has a downward airflow, which on the one hand makes it easier for the sewing thread to pass through the cylinder 1 without folding and getting stuck in the thread passage 3, and on the other hand makes the first sheet 61 and the second sheet 62 flip down smoothly under the combined action of gravity and airflow, keeping the lower end of the thread passage 3 unobstructed. The first channel 12 is equipped with a flat top screw 4 inside, which provides installation space and stable support for the first buffer pad 42. The flat top screw 4 is easy to disassemble, which facilitates the maintenance of the first buffer pad 42 later. The second channel 13 is equipped with a cylinder 5 inside, which provides a support frame for the piston rod 52. The cylinder 5 is the main power structure of the entire cylinder unit. The lower middle part of the thread passage 3 is symmetrically equipped with a movable structure 6. The movable structure 6 uses the pressure difference between the inside and outside of the thread passage 3 to achieve rotation, which can close or open the lower end of the thread passage 3. The middle part of the inclined surface 11 is equipped with an air extraction channel 2. The air in the thread passage 3 is extracted through the air extraction channel 2 and leaves the cylinder 1.

[0032] Furthermore, such as Figure 5As shown, the upper end of the air extraction channel 2 is connected to the air extraction pipe 21, and the left end of the air extraction pipe 21 is connected to the air extraction pump. When the air extraction pump operates, the air in the thread-passing channel 3 is gradually drawn away through the air extraction channel 2 and the air extraction pipe 21, creating a pressure difference between the inside and outside of the air extraction channel 2. This causes the sewing thread to be gradually drawn into the thread-passing channel, achieving an automatic thread-drawing function, making threading more convenient and faster, eliminating the need for manual threading. Furthermore, the lower end of the air extraction channel 2 is connected to the thread-passing channel 3, and both the first channel 12 and the second channel 13 are connected to the thread-passing channel 3. All channels within the cylinder 1 remain connected, allowing the air within the cylinder 1 to be drawn away. For successful extraction, the middle of the extraction pipe 21 is equipped with an extraction valve 22. The extraction valve 22 is used to control the opening and closing of the extraction pipe 21 and the gas flow. The extraction valve 22 is linked with the cylinder 5 and the blowing valve 142. When the extraction valve 22 is closed, the cylinder 5 works, causing the piston rod 52 to extend and tightly clamp the sewing thread. When the blowing valve 142 is open, the gas passes through the blowing pipe 141 and the blowing channel 14 into the thread passage 3, allowing the sewing thread to pass smoothly out of the cylinder 1 under the action of the downward airflow. Conversely, when the extraction valve 22 is open, the cylinder 5 is in a paused state and the blowing valve 142 is in a closed state.

[0033] Furthermore, such as Figure 1 As shown, a silicone layer 41 is provided between the flat top wire 4 and the first channel 12. The silicone layer 41 deforms under the combined compression of the flat top wire 4 and the first channel 12, filling the gap between the flat top wire 4 and the first channel 12, thereby increasing the sealing between the flat top wire 4 and the first channel 12. This makes it easier to control the pressure in the thread passage channel 3. The right end of the flat top wire 4 is fixedly connected to the first buffer pad 42, which is made of rubber or sponge. The deformation of the first buffer pad 42 can reduce the impact of the piston rod 52 on the flat top wire 4. The right end of the first buffer pad 42 is evenly distributed with rectangular grooves 43, and the first buffer pad 42 is aligned with the right end of the first channel 12, providing sufficient thread passage space for the sewing thread and ensuring smooth thread passage.

[0034] Furthermore, such as Figure 8 As shown, a sealing groove 131 is provided on the left side of the middle of the second channel 13 to provide installation space for the sealing ring 132. The sealing ring 132 is installed in the groove of the sealing groove 131. The inner circumference of the sealing ring 132 abuts against the cylinder 5. The sealing ring 132 deforms under the double compression of the cylinder 5 and the sealing groove 131, so that the three are kept in close contact, thereby ensuring the sealing between the cylinder 5 and the sealing groove 131, preventing gas from passing through the gap, and making the pressure in the wire passage 3 easy to control.

[0035] Furthermore, such as Figure 4As shown, the cylinder 5 has two air inlets 51 at the middle of its right end. The upper air inlet 51 is for air intake, and the lower air inlet 51 is for air release. By controlling the air pressure inside the cylinder, the piston rod 52 extends and retracts. An adjusting valve is provided at the air inlet 51 to regulate the air pressure. The clamping force of the cylinder 5 is directly proportional to the air pressure supplied to it; the higher the air pressure, the greater the clamping force. Adjusting the air pressure supplied to the cylinder to regulate the clamping force is a common method. The cylinder 5 also has a piston rod 52 at its left end. The piston rod 52 extends or retracts under the pressure of the gas inside the cylinder 5, thus automatically clamping and releasing the sewing thread. A second buffer pad 53, made of rubber or sponge, is located at the left end of the piston rod 52. The deformation of the second buffer pad 53 reduces the impact of the piston rod 52's deformation. The collision between the 2 and the flat top wire 4 prevents the sewing thread from being crushed or shaken apart. The left end of the second buffer pad 53 is evenly distributed with rectangular blocks 54. The rectangular blocks 54 are adapted to connect with the rectangular grooves 43. This invention automatically threads the thread through the pressure difference principle. When multiple sewing threads need to be sewn together, it cannot be guaranteed that the thread length of each sewing thread is consistent. A single sewing thread is composed of multiple yarns. As multiple sewing threads are pulled downwards continuously, they are prone to knotting and tangling, making the sewing unsmooth or even causing the thread to break. In reality, most of the thread straightening is done manually, which is time-consuming and laborious. Therefore, we set up rectangular blocks 54 and rectangular grooves 43 so that the sewing thread is held between the rectangular blocks 54 and rectangular grooves 43 to form an uneven pattern, making it difficult for it to come out of the clamp. In addition, multiple sewing threads are attracted together by static electricity during friction combing, forming a smooth thread.

[0036] Furthermore, such as Figure 5 As shown, the upper end of the air blowing channel 14 is connected to the air blowing pipe 141, and the other end of the air blowing pipe 141 is connected to the air blowing device. The air blowing device operates so that gas enters the air blowing channel 14 through the air blowing pipe 141, and then enters the thread guiding channel 3 along the air blowing channel 14. This causes the gas to blow the sewing thread at the lower end of the thread guiding channel 3, thereby blowing the lower end of the folded and retained sewing thread out of the cylinder 1, ensuring the effectiveness of threading. On the other hand, both the first sheet 61 and the second sheet 62 have friction with the inner wall of the thread guiding channel 3. In order to… To ensure the smooth downward flipping and resetting of sheet 61 and sheet 62, the gas in the blowing channel 14 blows downward onto sheet 61 and sheet 62, causing them to flip downward and reset under the action of gravity and downward airflow. The lower end of the blowing channel 14 is connected to the wire channel 3. The middle part of the blowing pipe 141 is provided with a blowing valve 142, which is used to control the opening and closing of the blowing pipe 141 and the gas flow rate. The blowing valve 142 is also linked to the suction valve 22.

[0037] Furthermore, such as Figure 7As shown, fixed seats 31 are symmetrically arranged on the lower side of the inner wall of the thread passage 3. The fixed seats 31 are fixedly connected to the thread passage 3, providing installation positions for the first sheet 61 and the second sheet 62. The movable structure 6 includes the first sheet 61 and the second sheet 62, and the volume of the first sheet 61 is smaller than that of the second sheet 62. Because the sewing thread is clamped by the piston rod 52 and is located on the left side of the thread passage 3, in order to ensure the effectiveness of threading, the intersection of the first sheet 61 and the second sheet 62 is also located below the thread passage 3. The first sheet 61 and the second sheet 62 are both rubber sheets. As the air in the cylinder 1 is gradually drawn away through the suction channel 2, the first sheet 61 and the second sheet 62 rotate upward under the suction force, causing the lower end of the thread passage 3 to gradually close, thereby increasing the pressure difference at the upper end of the thread passage 3, achieving the effect of reducing suction energy consumption and accelerating threading speed.

[0038] further, like Figure 7 As shown, The left end of the first sheet 61 is movably connected to the left end of the fixed seat 31, and the right end of the fixed seat 31 is movably connected to the second sheet 62. The fixed seat 31 is provided with a pair of limiting plates to limit the rotation position of the first sheet 61 and the second sheet 62, preventing the first sheet 61 and the second sheet 62 from becoming parallel to the wire passage 3 during rotation, thereby losing the sealing effect of the first sheet 61 and the second sheet 62 on the lower end of the wire passage 3. Furthermore, if the first sheet 61 and the second sheet 62 remain parallel to the inner wall of the wire passage 3, the energy consumption of the air blowing device connected to the air blowing pipe 141 will increase, and the energy consumption of the air pump connected to the air extraction pipe 21 will also increase. Therefore, the limiting plates are provided.

[0039] Working process: First, the suction valve 22 is opened, causing the suction pump connected to the suction pipe 21 to work, thereby creating an upward airflow in the thread passage 3 and leaving the cylinder 1 through the suction passage 2; further, the upward airflow will drive the first sheet 61 and the second sheet 62 to rotate upward, thereby increasing the sealing of the lower end of the thread passage 3, reducing the amount of air from outside the cylinder 1 entering through the lower end of the thread passage 3, thus reducing suction energy consumption and speeding up threading; further, the air in the thread passage 3 is gradually drawn out, creating a pressure difference between the inside and outside, and the sewing thread placed above the thread passage 3 will be automatically sucked into it; further, the suction valve 22 closes and the cylinder 5 and the blowing valve 142 are activated, and the cylinder 5... Air intake 51 begins to draw in air, causing piston rod 52 to extend, which in turn causes buffer pad 42 and buffer pad 53 to come into contact with each other, thereby clamping the sewing thread in thread passage 3. At the same time, air valve 142 opens, causing air blowing device connected to air pipe 141 to blow air into air passage 14, forming a downward airflow that blows into thread passage 3. This causes thin sheet 61 and thin sheet 62 to flip and reset downward under the action of gravity and downward airflow, causing the folded and retained sewing thread lower end to be blown out of cylinder 1, ensuring the effectiveness of threading. Furthermore, the sewing of the garment will cause the sewing thread to be pulled downward, so that rectangular block 54 and rectangular groove 43 will play a role in combing the sewing thread during the downward pulling process, preventing knots and tangles.

[0040] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component 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 invention.

[0041] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0042] The above description is merely a preferred embodiment 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 under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A vacuum wire-clamping cylinder unit, characterized in that: The cylinder (1) includes a cylinder body (1), the front end of which is provided with a slope (11), and the cylinder body (1) is provided with a wire passage (3) vertically centered inside, and the wire passage (3) penetrates the surface of the cylinder body (1) at both ends. The cylinder body (1) is provided with a first channel (12) at the left end and a second channel (13) at the right end. The cylinder body (1) is provided with an air blowing channel (14) at the middle of the front end. The first channel (12) is provided with a flat top screw (4) inside the channel. The second channel (13) is provided with a cylinder (5) inside the channel. The lower middle part of the wire passage (3) is provided with a movable structure (6). The middle part of the slope (11) is provided with an air extraction channel (2). A silicone layer (41) is provided between the flat top screw (4) and the first channel (12), and the right end of the flat top screw (4) is fixedly connected to the first buffer pad (42). The right end of the first buffer pad (42) is evenly distributed with rectangular grooves (43), and the first buffer pad (42) and the first channel (12) are aligned at their right ends. The cylinder (5) has two air inlets (51) in the middle of the right end, and the cylinder (5) has a piston rod (52) in the left end. The piston rod (52) has a second buffer pad (53) in the left end. The second buffer pad (53) has rectangular blocks (54) evenly distributed in the left end. The rectangular blocks (54) are adapted to and connected to the rectangular groove (43). The inner wall of the wire passage (3) is symmetrically provided with fixed seats (31) on the left and right sides. The movable structure (6) includes a first sheet (61) and a second sheet (62), and the volume of the first sheet (61) is smaller than that of the second sheet (62).

2. The vacuum wire-clamping cylinder unit according to claim 1, characterized in that, The upper end of the air extraction channel (2) is connected to the air extraction pipe (21), and the lower end of the air extraction channel (2) is connected to the wire channel (3). The first channel (12) and the second channel (13) are both connected to the wire channel (3). The middle part of the air extraction pipe (21) is provided with an air extraction valve (22).

3. The vacuum wire-clamping cylinder unit according to claim 1, characterized in that, A sealing groove (131) is provided on the left side of the middle of the second channel (13). A sealing ring (132) is provided in the groove of the sealing groove (131). The inner circumference of the sealing ring (132) abuts against the cylinder (5).

4. The vacuum wire-clamping cylinder unit according to claim 1, characterized in that, The upper end of the air blowing channel (14) is connected to the air blowing pipe (141), and the lower end of the air blowing channel (14) is connected to the wire channel (3). The middle part of the air blowing pipe (141) is provided with an air blowing valve (142).

5. The vacuum wire-clamping cylinder unit according to claim 1, characterized in that, The left end of the first sheet (61) is movably connected to the left end of the fixed seat (31), and the right end of the fixed seat (31) is movably connected to the second sheet (62).

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