Adsorption system, sewing machine and adsorption process

Abstract

The adsorption system comprises an adsorption table, negative pressure equipment, a control mechanism and a control module, the adsorption table comprises an adsorption table plate, a negative pressure cavity, a negative pressure connector and a pressure release opening, an adsorption hole is formed in the table top of the adsorption table plate, and the adsorption hole communicates with the negative pressure cavity; the negative pressure equipment is communicated with the negative pressure cavity through the negative pressure interface and is connected with the control module; the control mechanism comprises power, a first plugging piece and a second plugging piece, the power is in transmission connection with the second plugging piece, the second plugging piece is in transmission connection with the first plugging piece, and the power is connected with the control module and used for driving the second plugging piece to be switched between the first position and the second position and driving the first plugging piece to be in linkage; the adsorption system not only is more convenient to use and higher in use efficiency, but also can effectively protect the motor in the negative pressure equipment and ensure that the system can operate more efficiently and stably.

Description

Technical Field

[0001] The invention relates to the technical field of sewing equipment, and in particular to an adsorption system, a sewing machine and an adsorption process. Background Art

[0002] A sewing machine is a common sewing device. Since the sewing machine can automatically and quickly sew a variety of materials and patterns under the precise control of its computer system, it is widely used in the sewing production of various quilts, bedspreads, sleeping bags, mattresses, textile decorations, clothing, etc. The existing sewing machine not only includes a housing, a needle bar mechanism, a middle presser mechanism, and a rotary shuttle mechanism, but is also usually equipped with an adsorption table for flattening the fabric. The table surface of the existing adsorption table is usually equipped with adsorption holes. At the same time, it is also equipped with a negative pressure generating device (referred to as negative pressure device) connected to the adsorption holes. When in use, the negative pressure device is used to generate negative pressure at the adsorption holes, and the negative pressure forms an adsorption force on the fabric, so as to achieve the purpose of restraining the fabric without damage, so as to perform subsequent sewing work on the fabric.

[0003] In the existing adsorption table, the negative pressure device and the table top of the adsorption table are kept in a relatively closed state. Usually, only adsorption holes for adsorbing fabrics are arranged on the table top of the adsorption table. In actual work, the fabrics are laid on the table top of the adsorption table and cover the adsorption holes. The negative pressure device is started to generate negative pressure, so that the outside air can only enter the interior of the adsorption table through the adsorption holes, so that negative pressure suction can be generated at the adsorption holes, and the purpose of adsorbing the fabrics is achieved. Since the communication path between the negative pressure device and the adsorption holes is kept in a sealed state, the problem of air leakage in the communication path is avoided, and the adsorption effect is improved. However, in actual use, the fabrics (such as clothes) are usually laid flat on the table top of the adsorption table, the adsorption holes are covered with the fabrics, and the position and posture of the fabrics are adjusted. Start the negative pressure device, use the negative pressure to absorb the fabric, and then perform the corresponding sewing operation; when the fabric needs to be removed from the adsorption table, it is usually necessary to turn off the negative pressure device first, and then wait for the negative pressure of the entire connecting path to drop before removing the fabric from the adsorption table. This results in, first, the process of removing the fabric requires a certain waiting time, which is not conducive to improving sewing efficiency and production efficiency. Second, since the connecting path between the negative pressure device and the adsorption hole remains sealed, and when in use, the fabric will first cover the adsorption hole, making the entire connecting path more sealed, especially when the fabric is thicker and the fabric is not breathable, when the negative pressure device is started, the starting current of the negative pressure device will increase significantly, which is prone to problems such as failure to start or even burning the motor, which needs to be solved urgently. Summary of the invention

[0004] The first aspect of the present invention is to solve the above technical problems and provide an adsorption system with higher use efficiency and can effectively protect the motor in the negative pressure device, so as to ensure that the adsorption system can operate more efficiently and stably. The main concept is:

[0005] An adsorption system comprises an adsorption platform, a negative pressure device, a control mechanism and a control module, wherein the adsorption platform comprises an adsorption platform plate, a negative pressure chamber, a negative pressure interface and a pressure release port, a plurality of adsorption holes are arranged in the surface of the adsorption platform plate, and each adsorption hole is respectively connected to the negative pressure chamber; the negative pressure interface and the pressure release port are respectively connected to the negative pressure chamber; the negative pressure device is connected to the negative pressure chamber through the negative pressure interface, and the negative pressure device is connected to the control module; the control mechanism comprises a power, a first blocking member adapted to the negative pressure interface, and a second blocking member adapted to the pressure release port, and the power and The second blocking piece is transmission connected, the second blocking piece is transmission connected to the first blocking piece, and the power is connected to the control module. The power is used to drive the second blocking piece to switch between position one and position two under the control of the control module, and drive the first blocking piece to operate synchronously; when the second blocking piece is in position one, the second blocking piece blocks the pressure release port, the first blocking piece is in a state of opening the negative pressure interface, and the negative pressure device is connected to the negative pressure chamber; when the second blocking piece is in position two, the first blocking piece blocks the negative pressure interface, the second blocking piece is in a state of opening the pressure release port, and the negative pressure chamber is connected to the outside. In the present scheme, by configuring the first blocking piece, the first blocking piece can be used to control the on / off connection between the negative pressure interface and the negative pressure chamber; by configuring the pressure release port, the negative pressure chamber can be connected to the outside world through the pressure release port, so as to balance the internal pressure in the negative pressure chamber more quickly and efficiently, which is conducive to losing the adsorption force on the fabric more quickly and efficiently, so that the fabric can be removed more quickly, which is conducive to improving sewing efficiency and production efficiency; by configuring the second blocking piece, the second blocking piece can be used to control the on / off connection between the pressure release port and the outside world; by connecting the first blocking piece with the second blocking piece, and connecting the power to the second blocking piece, the power can be used to drive the first blocking piece and the second blocking piece to be synchronously linked, and then combined with the control module, the control mechanism and the negative pressure device are connected. The devices can work in coordination under the precise control of the control module. On the one hand, when the negative pressure device is started, the negative pressure interface can be opened synchronously and the pressure release port can be closed synchronously, so that the negative pressure device can be started under a lower negative pressure or normal pressure, thereby effectively protecting the negative pressure device and solving the problem that the negative pressure device is prone to failure to start or even burning the motor; on the other hand, the ability to absorb negative pressure can be lost more quickly and efficiently, thereby greatly shortening the waiting time and improving efficiency; in addition, when the pressure release port is opened, the negative pressure interface and the negative pressure device are closed synchronously, so that before the negative pressure device is started again, a relatively high negative pressure can be maintained between the first sealing member and the negative pressure device, and this part of the negative pressure can also be used when the negative pressure device is started next time, thereby saving more energy.

[0006] Preferably, the first blocking member is arranged in the negative pressure cavity, and the second blocking member is arranged outside the negative pressure cavity, which is not only conducive to simplifying the structure, but also enables the first blocking member and the second blocking member to achieve more coordinated cooperation under the control of the control module.

[0007] In order to solve the problem of more energy saving, preferably, the second blocking member and / or the pressure release port are provided with a sealing ring, and when the second blocking member is in the first position, the sealing ring is pressed between the second blocking member and the pressure release port. By configuring the sealing ring, the sealing performance between the second blocking member and the pressure release port is better, so that there will be no leakage between the second blocking member and the pressure release port, which is more conducive to maintaining the vacuum degree of the negative pressure chamber, and can reduce the energy consumption of the negative pressure device during use, which is more energy-saving.

[0008] Preferably, the first blocking member and / or the negative pressure interface is provided with a sealing ring, and when the first blocking member blocks the negative pressure interface, the sealing ring is pressed tightly between the first blocking member and the negative pressure interface.

[0009] Preferably, the pressure release port is circular; the second plugging member is configured with a disc portion adapted to the pressure release port. The disc portion and the circular pressure release port are matched to each other, so there is no dead angle for matching, which is not only conducive to the second plugging member being separated from the pressure release port under the action of power, but also conducive to reducing the difficulty of matching and improving air tightness.

[0010] Preferably, the second blocking piece is constructed with a circle of steps adapted to the pressure release port, and a sealing ring is arranged inside the step. Through the cooperation of the step, the sealing ring and the pressure release port, not only can the air tightness be further improved, but also the power can be more labor-saving to drive the second blocking piece away from the pressure release port, the power requirement is lower, and it is less likely to get stuck or unable to open under negative pressure, which effectively improves reliability.

[0011] The second aspect of the present invention is to solve the problem of improving the reliability of the action. Preferably, the negative pressure interface and the pressure release port are arranged adjacent to each other, and the central axis of the negative pressure interface and the central axis of the pressure release port are parallel to each other. The power is telescopic power, and the power drives the second blocking member to move linearly through telescopic movement. Thereby driving the first blocking member and the second blocking member to move linearly synchronously. The structure is simple and efficient, which is not only conducive to improving the response speed and action efficiency, but also the negative pressure interface and the pressure release port can form limits for the first blocking member and the second blocking member respectively, which is conducive to improving the reliability during the action.

[0012] Preferably, the power is a cylinder, an electric push cylinder or a hydraulic cylinder, which is not only simple in structure and low in cost, but also can realize reciprocating movement.

[0013] Preferably, the control module includes a PLC or a timer.

[0014] The third aspect of the present invention is to solve the problem of improving the matching accuracy between the first blocking member and the negative pressure interface. Furthermore, the second blocking member is configured with a mounting hole, the first blocking member is connected with a connecting portion, the connecting portion is configured with a bar hole adapted to the mounting hole, and the first blocking member is vertically connected to the second blocking member by a fastener adapted to the bar hole and the mounting hole. In this solution, the first blocking member is vertically connected to the second blocking member by a fastener adapted to the bar hole and the mounting hole, which is not only convenient for the separate production and manufacture of the first blocking member and the second blocking member, and for the disassembly and replacement of the first blocking member and the second blocking member, but also can utilize the matching of the bar hole and the mounting hole to eliminate the influence of manufacturing errors and assembly errors, ensuring that the first blocking member can be installed directly opposite the negative pressure interface, which is beneficial to improving the matching accuracy between the first blocking member and the negative pressure interface.

[0015] The fourth aspect of the present invention aims to improve the stability and reliability of the first blocking member during movement, and further includes a guide portion, along which the first blocking member moves under the drive of a power, so that the first blocking member moves strictly along the guide portion without being interfered by external factors, which is conducive to improving the stability and reliability of the first blocking member during movement.

[0016] Preferably, the guide portion includes at least two guide members, one end of which is connected to the first blocking member, and the other end is inserted into the negative pressure interface. Through the cooperation between the guide member and the side wall of the negative pressure interface, the first blocking member is effectively restricted and constrained, so that the first blocking member can be driven by power to strictly move in a direction close to the negative pressure interface or away from the negative pressure interface, which is conducive to a more stable and reliable cooperation between the first blocking member and the negative pressure interface.

[0017] Furthermore, it also includes a sealing cover, which is connected to the bottom of the adsorption platform and covers the area corresponding to the adsorption hole. A closed negative pressure chamber is formed between the sealing cover and the adsorption platform. The negative pressure interface and the pressure release port are respectively arranged on the sealing cover, and the power is fixed to the sealing cover.

[0018] The fifth aspect of the present invention aims to solve the problem that after the existing adsorption table adsorbs the fabric, the fabric is uneven and unreliable, which affects the sewing effect. Furthermore, a sinking groove is provided in the table top of the adsorption table, and a top plate is installed in the sinking groove, and each of the adsorption holes is respectively constructed on the top plate; a partition is provided under the top plate, and the partition is provided with a plurality of evenly distributed air distribution holes; a sealing cover covers each of the air distribution holes; an air distribution cavity is provided between the top plate and the partition, and each of the adsorption holes is respectively connected with the air distribution cavity, and the air distribution cavity is connected with the negative pressure cavity through the air distribution holes. In the present scheme, a top plate is configured so that the top plate can be used to support the fabric; a partition is set under the top plate to form an air cloth cavity between the top plate and the partition, and at the same time, a plurality of air cloth holes are constructed on the partition so that the air cloth cavity and the negative pressure cavity are connected through the air cloth holes. When in use, a relatively larger negative pressure can be formed in the negative pressure cavity, and the negative pressure cavity itself can also play a role in balancing the pressure. The suction force of the negative pressure can act on the air cloth cavity more dispersedly through the air cloth holes, so that the negative pressure distribution in the air cloth cavity is more uniform, so that the outside air can be more evenly inhaled through the adsorption holes, and then a more uniform negative pressure can be formed above the top plate, which not only makes the fabric on the top plate obtain a more uniform adsorption force and makes the fabric smoother after adsorption, but also facilitates more reliable adsorption of the fabric on the top plate, and it is not easy to have the problem of fabric movement or warping during the sewing process, which is beneficial to improve the sewing effect and sewing accuracy.

[0019] In order to further improve the uniformity of negative pressure, preferably, the sealing cover is constructed as a funnel-shaped structure, the two ends of the funnel-shaped structure are respectively a large end and a small end, the large end faces the partition, and the negative pressure interface and the pressure release port are respectively arranged at the small end of the sealing cover. In this solution, by constructing the sealing cover as a funnel-shaped structure, the cross-sectional area of ​​the negative pressure chamber gradually increases from the small end to the large end, and the volume gradually increases from bottom to top, and the small end of the sealing cover is closer to the negative pressure device, and the large end of the sealing cover is closer to the partition. Such an air path design is more conducive to the uniform distribution of negative pressure, so that the air above the top plate is more evenly inhaled, thereby achieving a more uniform, flat, and reliable adsorption effect of the fabric.

[0020] A sewing machine comprises the adsorption system.

[0021] An adsorption process, comprising the adsorption system, further comprising:

[0022] (1) The process of adsorbing the fabric includes: laying the fabric on the adsorption platen and covering the adsorption hole; the control module controls the power to drive the second blocking member, so that the second blocking member switches from position two to position one, the second blocking member blocks the pressure release port, and the first blocking member is in a state of opening the negative pressure interface, and the negative pressure device is in a state of being connected to the negative pressure chamber through the negative pressure interface; then the control module controls the negative pressure device to start, and uses the negative pressure device to put the negative pressure chamber in a negative pressure state;

[0023] (2) The process of removing the fabric includes: the control module first controls the power to drive the second blocking member, so that the second blocking member switches from position one to position two, and simultaneously controls the negative pressure device to close, so that the second blocking member opens the pressure release port, and the negative pressure chamber is connected to the outside through the pressure release port.

[0024] Furthermore, the process of adsorbing fabrics also includes: after the negative pressure device is started, the negative pressure device is turned off with a delay by the control module. This can not only achieve the purpose of energy saving, but also in some occasions, the adsorption force at the adsorption hole can be more durable and more stable, and can effectively meet the needs of adsorbing and fixing fabrics during the sewing process for a period of time after the negative pressure device is turned off.

[0025] Compared with the prior art, the adsorption system, sewing machine and adsorption process provided by the present invention are not only more convenient to use and more efficient, but can also effectively protect the motor in the negative pressure equipment, ensuring that the adsorption system can operate more efficiently and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the structure of an adsorption system provided in Example 1 of the present invention.

[0028] Figure 2 for Figure 1 A local enlarged schematic diagram of point I in the middle.

[0029] Figure 3 This is a partial bottom view of an adsorption platform in an adsorption system provided in Example 1 of the present invention.

[0030] Figure 4 This is a front view of an adsorption system provided in Example 1 of the present invention.

[0031] Figure 5 for Figure 4 A cross-sectional view at AA in the middle, in which the second blocking member is at position 1.

[0032] Figure 6 This is a schematic diagram of a partial three-dimensional structure of an adsorption system provided in Example 1 of the present invention.

[0033] Figure 7 for Figure 4A cross-sectional view of the invention shows that the second blocking member is at position two.

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of a control mechanism in an adsorption system provided in Example 2 of the present invention.

[0035] Fig. 9 for Figure 8 main view.

[0036] Fig.10 This is a schematic diagram of the three-dimensional structure of an adsorption system provided in Example 4 of the present invention.

[0037] Fig.11 This is a schematic diagram of the local structure of an adsorption platen in an adsorption system provided in Example 4 of the present invention.

[0038] Fig.12 This is a partial cross-sectional view of an adsorption system provided in Example 4 of the present invention.

[0039] Explanation of the markings in the figure: adsorption platform 1, adsorption platform plate 11, adsorption hole 12, sinking groove 13, frame 14, sealing cover 15, negative pressure chamber 16, negative pressure interface 17, pressure release port 18, connecting tube 19; control mechanism 2, power 21, output shaft 211, first blocking member 22, connecting part 23, strip hole 231, guide member 24, second blocking member 25, disc part 26, step 261, extension part 27, mounting hole 271, sealing ring 28; negative pressure equipment 3, pipeline 31; control module 4; fastener 5, nut 51; top plate 61, partition 62, air distribution hole 63, air distribution chamber 64. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0041] Example 1

[0042] In this embodiment, an adsorption system is provided, including an adsorption platform 1, a negative pressure device 3, a control mechanism 2 and a control module 4, wherein the adsorption platform 1 includes an adsorption platform 11, a frame 14, a negative pressure chamber 16, a negative pressure interface 17 and a pressure release port 18, and the frame 14 is usually arranged below the adsorption platform 11, mainly used to support the adsorption platform 11. In this embodiment, the adsorption platform 11 can preferably adopt a plate-like structure, and the upper surface of the adsorption platform 11 is constructed as a plane, so as to better lay fabrics such as clothing and quilts. Figure 1 As shown, in this embodiment, the adsorption table 11 adopts a rectangular structure, and a plurality of adsorption holes 12 are arranged in the table surface of the adsorption table 1. In implementation, the adsorption holes 12 have a variety of arrangement modes to meet the needs of different fabrics and different occasions. For example, the adsorption holes 12 can be evenly arranged in a matrix so that the entire adsorption hole 12 array forms a rectangle; for another example, the adsorption holes 12 can be evenly arranged and the adsorption holes 12 together form a ring, such as Figure 1 and Figure 2 As shown, it is conducive to a more uniform, smooth and reliable adsorption fabric. In implementation, the adsorption holes 12 can preferably be round holes, and of course, strip holes can also be used.

[0043] The aperture of the adsorption hole 12 is preferably smaller than or equal to the aperture of the air cloth hole 63, and in some cases, the total flow area of ​​each adsorption hole 12 is smaller than the flow area of ​​the negative pressure interface 17, and the volume of the negative pressure chamber 16 can be much larger than the total volume of the gas passing through the adsorption holes 12 per unit time, so that when the negative pressure device 3 is closed in advance, the adsorption force at the adsorption hole 12 can be more durable, and can effectively meet the needs of adsorbing and fixing the fabric during the sewing process for a period of time after the negative pressure device 3 is closed, thereby saving more energy.

[0044] In this embodiment, each adsorption hole 12 is connected to the negative pressure chamber 16, such as Figure 5 As shown, at the same time, the negative pressure interface 17 and the pressure release port 18 are respectively connected to the negative pressure chamber 16.

[0045] In this embodiment, the negative pressure device 3 can be a device commonly used in the prior art for generating negative pressure. For example, the negative pressure device 3 can include a vacuum pump and a motor connected to the vacuum pump, and the motor is used to drive the vacuum pump. In this embodiment, the negative pressure device 3 is connected to the negative pressure interface 17 through a pipeline 31. Figure 1 and Figure 3 As shown, the negative pressure chamber 16 can be connected via the negative pressure interface 17 .

[0046] In this embodiment, the control mechanism 2 is mainly used to realize the on / off of the negative pressure interface 17 and the pressure release port 18; when implemented, the control mechanism 2 includes a power 21, a first blocking member 22 adapted to the negative pressure interface 17, and a second blocking member 25 adapted to the pressure release port 18, and the power 21 is transmission-connected to the second blocking member 25, such as Figure 5-Figure 7 As shown, the second blocking member 25 is transmission-connected with the first blocking member 22, so that the power 21 can drive the second blocking member 25 and the first blocking member 22 at the same time; at the same time, the power 21 is connected to the control module 4, and the power 21 can drive the second blocking member 25 to switch between position one and position two under the control of the control module 4, and drive the first blocking member 22 to work in conjunction.

[0047] When the second blocking member 25 is at position 1, Figure 5 and Figure 6 As shown, at this time, the second blocking member 25 blocks the pressure release port 18, so that the negative pressure chamber 16 is not connected to the outside world. At the same time, the first blocking member 22 is at a position away from the negative pressure interface 17, and the first blocking member 22 is in a state of opening the negative pressure interface 17, so that the negative pressure device 3 is connected to the negative pressure chamber 16 through the negative pressure interface 17. At this time, the negative pressure device 3 can form a negative pressure in the negative pressure chamber 16, and generate a negative pressure for adsorbing the fabric above the adsorption table 11, and form an adsorption force for the adsorption fabric through the negative pressure.

[0048] When the second blocking member 25 is at position 2, Figure 7 As shown, at this time, the first blocking member 22 blocks the negative pressure interface 17, so that the negative pressure device 3 is not connected to the negative pressure chamber 16, and the negative pressure device 3 cannot generate a continuous negative pressure in the negative pressure chamber 16. Accordingly, there is no negative pressure for adsorbing the fabric above the adsorption platen 11; at the same time, Figure 7 As shown, the second blocking member 25 is located away from the pressure release port 18, so that the second blocking member 25 is in a state of opening the pressure release port 18, and the negative pressure chamber 16 is connected with the outside through the pressure release port 18 to quickly balance the negative pressure in the negative pressure chamber 16, so that the negative pressure above the adsorption platen 11 is quickly reduced and disappears.

[0049] In implementation, the shape and size of the first blocking member 22 are configured to fit the negative pressure interface 17; meanwhile, the shape and size of the second blocking member 25 are configured to fit the pressure release port 18; during assembly, the first blocking member 22 is preferably disposed in the negative pressure chamber 16, such as Figure 5-Figure 7 As shown, accordingly, the second blocking member 25 is disposed outside the negative pressure chamber 16 , which is not only conducive to simplifying the structure, but also enables the first blocking member 22 and the second blocking member 25 to achieve more efficient and coordinated cooperation under the control of the control module 4 .

[0050] During implementation, the shape of the negative pressure interface 17 can be determined according to actual needs. For example, the negative pressure interface 17 can be circular or square. Similarly, during implementation, the shape of the pressure release port 18 can also be determined according to actual needs. For example, the pressure release port 18 can be circular or square. The shape of the negative pressure chamber 16 can also be determined according to actual needs. There are also multiple implementation methods for enclosing the negative pressure chamber 16. For example, in some implementations, the negative pressure chamber 16 can be constructed in the adsorption table 11. The negative pressure chamber 16 is located below the adsorption hole 12 and is connected to the adsorption hole 12. For example, in other preferred embodiments, a sealing cover 15 is also included, such as Figure 3-Figure 7 As shown, the sealing cover 15 is connected to the bottom of the adsorption platform 1 and covers the area corresponding to the adsorption hole 12. In implementation, the sealing cover 15 can be welded to the adsorption platform 1, or can be detachably installed on the adsorption platform 1 by fasteners 5 such as bolts or screws, which is more convenient for installation and removal of the sealing cover 15. After the sealing cover 15 is connected to the adsorption platform 1, as shown in FIG. Figure 3 As shown, a closed negative pressure chamber 16 can be formed between the sealing cover 15 and the adsorption platform 1. At this time, the negative pressure interface 17 and the pressure release port 18 can be respectively provided on the sealing cover 15. Figure 5-Figure 7 As shown, in this embodiment, the pressure release port 18 is constructed in a circular shape, and accordingly, the second sealing member 25 is constructed with a disc portion 26 adapted to the pressure release port 18. Through the cooperation between the disc portion 26 and the circular pressure release port 18, there is no dead angle in cooperation, which is not only conducive to the second sealing member 25 being separated from the pressure release port 18 under the action of the power 21, but also conducive to reducing the difficulty of cooperation and improving air tightness.

[0051] like Figure 5 and Figure 6 As shown, in the present embodiment, the negative pressure interface 17 is also constructed in a circular shape, and in order to facilitate the connection of the pipeline 31, a connecting tube 19 is also provided on the outer side of the sealing cover 15, and the connecting tube 19 is coaxial with the negative pressure interface 17, so that the negative pressure interface 17 can be connected more conveniently and securely through the connecting tube 19.

[0052] like Figure 5 and Figure 6As shown, in this embodiment, the negative pressure interface 17 and the pressure release port 18 are arranged adjacent to each other, and the central axis of the negative pressure interface 17 is parallel to the central axis of the pressure release port 18. The second blocking member 25 can be blocked or opened by the power 21 by driving the second blocking member 25 to move linearly along the direction of the central axis of the pressure release port 18; at the same time, the second blocking member 25 can synchronously drive the first blocking member 22 to move linearly along the direction of the central axis of the negative pressure interface 17, thereby synchronously driving the first blocking member 22 to block or open the negative pressure interface 17. Based on this, during implementation, the power 21 can be a motor, which is connected to an existing linear transmission mechanism (such as a gear-rack rotation mechanism, a screw-nut 51 transmission mechanism, etc.), and the linear transmission mechanism is connected to the second blocking member 25, and the second blocking member 25 can be driven to move linearly and reciprocatingly by the linear transmission mechanism. In the preferred implementation manner provided in this embodiment, the power 21 can preferentially adopt telescopic power 21, and the telescopic direction of the telescopic power 21 is coaxial with the second blocking member 25 or the pressure release port 18, so that the power 21 can drive the second blocking member 25 to move back and forth in a straight line by telescoping, thereby driving the first blocking member 22 and the second blocking member 25 to move back and forth in a synchronous straight line. The structure is simple and efficient, which is not only conducive to improving the response speed and action efficiency, but also the negative pressure interface 17 and the pressure release port 18 can respectively form limits for the first blocking member 22 and the second blocking member 25, thereby helping to improve the reliability during the action process.

[0053] In implementation, the power 21 may preferably be a cylinder or an electric push cylinder (or electric push rod), etc., which have a simple structure and low cost. Of course, in implementation, the power 21 may also be a hydraulic cylinder. For example, Figure 3-Figure 7 As shown, the power 21 is a cylinder, which is directly or indirectly fixed to the sealing cover 15 or the frame 14; the output shaft 211 of the cylinder is connected to the end of the second blocking member 25 away from the negative pressure chamber 16, and is coaxial with the second blocking member 25 or the pressure release port 18, as shown in FIG. Figure 5 and Figure 6 As shown, when in use, the second blocking member 25 can be driven to quickly open or close the pressure release port 18 by the extension and contraction of the cylinder.

[0054] To facilitate the transmission connection with the first blocking member 22, in a more perfect embodiment, one end of the second blocking member 25 facing the negative pressure chamber 16 protrudes toward the negative pressure chamber 16 and forms an extension portion 27, for example, Figure 6 , Figure 8 and Fig. 9As shown, an extension portion 27 of a columnar structure is constructed at one end of the disc portion 26 facing the negative pressure chamber 16, and the first blocking member 22 can be vertically connected to the extension portion 27, so that the positions of the disc portions 26 in the first blocking member 22 and the second blocking member 25 can be offset from each other along the axial direction of the pressure release port 18, so that the first blocking member 22 and the second blocking member 25 as a whole have space to move relative to the negative pressure chamber 16, and thus the first blocking member 22 and the second blocking member 25 can move synchronously.

[0055] During implementation, the inner diameter of the pressure release port 18 can be preferably configured to be greater than or equal to the inner diameter of the negative pressure interface 17, which is conducive to faster and more efficient release of negative pressure so as to more efficiently remove the fabric.

[0056] In a more perfect embodiment, the second blocking member 25 and / or the pressure release port 18 are also provided with a sealing ring 28. When the second blocking member 25 is in position 1, the sealing ring 28 is just pressed between the second blocking member 25 and the pressure release port 18. In implementation, by configuring the sealing ring 28, the sealing between the second blocking member 25 and the pressure release port 18 is better, so that there will be no leakage between the second blocking member 25 and the pressure release port 18, which is more conducive to maintaining the vacuum degree of the negative pressure chamber 16, and can reduce the energy consumption of the negative pressure device 3 during use, which is more energy-efficient. In implementation, the sealing ring 28 can be pasted to the second blocking member 25 or the pressure release port 18; preferably, the second blocking member 25 is also constructed with a circle of steps 261 adapted to the pressure release port 18, and the steps 261 can be specifically constructed on the disc portion 26, such as Figure 8 and Fig. 9 As shown, the sealing ring 28 is arranged in the step 261. On the one hand, the sealing ring 28 and the disc portion 26 have a larger contact area and bonding area, and are less likely to fall off during actual use. On the other hand, through the cooperation of the step 261, the sealing ring 28 and the pressure release port 18, not only can the air tightness be further improved, but the power 21 can also drive the second blocking member 25 to separate from the pressure release port 18 more effortlessly, the demand for the power 21 is lower, and it is less likely to get stuck or unable to open under negative pressure, thereby effectively improving reliability.

[0057] Similarly, during implementation, a sealing ring 28 can also be configured on the first sealing member 22 and / or the negative pressure interface 17, so that when the first sealing member 22 blocks the negative pressure interface 17, the sealing ring 28 is pressed tightly between the first sealing member 22 and the negative pressure interface 17 to achieve a better sealing effect.

[0058] In this embodiment, the control module 4 may include a PLC or a timer, etc. The control module 4 is not only connected to the power 21 in the control mechanism 2, but also connected to the negative pressure device 3 (specifically connected to the motor in the negative pressure device 3). Figure 1 As shown, during the actual operation, the control module 4 controls the control mechanism 2 to work in coordination with the negative pressure device 3, which can not only improve the efficiency, but also effectively protect the motor in the negative pressure device 3 and increase the service life of the negative pressure device 3. Specifically, the present embodiment also relates to an adsorption process based on the adsorption system, including (1) when adsorption of fabric is required (or when the negative pressure is first started): the fabric is laid on the adsorption table 11 and covers the adsorption hole 12; the control module 4 controls the power 21 to drive the second blocking member 25, so that the second blocking member 25 switches from position two to position one. At this time, the second blocking member 25 blocks the pressure release port 18, and the first blocking member 22 is in a state of opening the negative pressure interface 17. The negative pressure device 3 is in a state of communication with the negative pressure chamber 16 through the negative pressure interface 17, so as to effectively reduce or even eliminate the negative pressure device 3 and the first blocking member 22. The negative pressure between the negative pressure chamber 16 and the negative pressure chamber 16 is high; then the control module 4 controls the negative pressure device 3 to start and start to evacuate the negative pressure chamber 16; the control module 4 has the function of delaying the shutdown of the negative pressure device 3. After the negative pressure device 3 works for a period of time, the control module 4 controls the negative pressure device 3 to automatically shut down, that is, the control module 4 controls the negative pressure device 3 to delay the automatic shutdown, which can not only achieve the purpose of energy saving, but also in some occasions, due to the large volume of the negative pressure chamber 16 and the large negative pressure, the adsorption force at the adsorption hole 12 can be more durable and more stable, which can effectively meet the needs of adsorbing and fixing fabrics during sewing within a period of time after the negative pressure device 3 is closed. At the same time, through the joint cooperation of the control module 4, the control mechanism 2 and the negative pressure device 3, the negative pressure device 3 will not be started in the vacuum state where the first blocking member 22 blocks the negative pressure interface 17, so that the negative pressure device 3 can be started under a lower negative pressure or normal pressure, thereby effectively protecting the negative pressure device 3 and solving the problem that the negative pressure device 3 is prone to failure to start or even burn the motor.

[0059] (2) When the fabric needs to be removed: the control module 4 first controls the power 21 to drive the second blocking member 25 to move, so that the second blocking member 25 switches from position one to position two, and synchronously controls the negative pressure device 3 to close. At this time, the second blocking member 25 opens the pressure release port 18, and the negative pressure chamber 16 is connected to the outside through the pressure release port 18, so that the negative pressure in the negative pressure chamber 16 can be quickly released. On the one hand, it is beneficial for the adsorption hole 12 to lose the ability of negative pressure adsorption more quickly and efficiently, and the fabric can be removed earlier and faster, which greatly shortens the waiting time and is beneficial to improving sewing efficiency and production efficiency; on the other hand, a relatively high negative pressure can be maintained between the first blocking member 22 and the negative pressure device 3, and this part of the negative pressure can also be used when the negative pressure device 3 is started next time, which is more energy-saving.

[0060] Example 2

[0061] In order to improve the matching accuracy between the first blocking member 22 and the negative pressure interface 17, the main difference between the present embodiment 2 and the above-mentioned embodiment 1 is that, in the adsorption system provided in the present embodiment, the second blocking member 25 is further configured with a mounting hole 271, for example, Figure 8 and Fig. 9 As shown, the mounting hole 271 can be configured at the end of the extension portion 27 in the second blocking member 25. Accordingly, the first blocking member 22 is connected to the connecting portion 23, and the connecting portion 23 is configured with a bar hole 231 adapted to the mounting hole 271, as shown in FIG. Figure 8 and Fig. 9 As shown, the first blocking member 22 can be vertically connected to the second blocking member 25 through the fastener 5 of the adapter bar hole 231 and the mounting hole 271, as shown in FIG. Figure 8 and Fig. 9 shown.

[0062] In this embodiment, the first blocking member 22 is vertically connected to the second blocking member 25 through the fastener 5 that adapts the strip hole 231 and the mounting hole 271. This not only facilitates the separate production and manufacture of the first blocking member 22 and the second blocking member 25, and facilitates the disassembly and replacement of the first blocking member 22 and the second blocking member 25, but also the relative positions of the first blocking member 22 and the second blocking member 25 can be adjusted by utilizing the cooperation of the strip hole 231 and the mounting hole 271, thereby effectively eliminating the influence of manufacturing errors and assembly errors, ensuring that the first blocking member 22 can be installed facing the negative pressure interface 17, which is beneficial to improving the cooperation accuracy between the first blocking member 22 and the negative pressure interface 17, and can effectively improve the versatility of the system.

[0063] Example 3

[0064] The main difference between this embodiment 3 and the above-mentioned embodiment 1 or embodiment 2 is that the adsorption system provided in this embodiment further includes a guide part, and the first blocking member 22 can move along the guide part under the drive of the power 21, so that the first blocking member 22 strictly moves along the guide part without being disturbed by external factors.

[0065] During implementation, the guide portion has a variety of implementation methods, which can be selected according to actual needs. As an example, the guide portion can be set on the first blocking member 22. For example, the guide portion includes at least two guide members 24, one end of the guide member 24 is connected to the first blocking member 22, and the other end is inserted into the negative pressure interface 17. The guide member 24 is parallel to the axis of the negative pressure interface 17, and each guide member 24 can be in contact with the side wall of the negative pressure interface 17, such as Figure 5-Figure 9As shown, through the cooperation between the guide member 24 and the side wall of the negative pressure interface 17, the first blocking member 22 is effectively limited and constrained, so that the first blocking member 22 can be strictly moved in the direction close to the negative pressure interface 17 or away from the negative pressure interface 17 under the drive of the power 21, which is conducive to a more stable and reliable cooperation between the first blocking member 22 and the negative pressure interface 17, and the guide portion of this structure will not affect the connection between the negative pressure device 3 and the negative pressure chamber 16. In implementation, the guide member 24 can preferably adopt a cylindrical rod or a screw rod or a bolt, etc. For example, in this embodiment, the first blocking member 22 is provided with two relatively arranged guide members 24, the guide member 24 is configured with an external thread, and the first blocking member 22 is configured with a bar hole 231 adapted to the guide member 24, the two bar holes 231 are arranged in a colinear manner, and the two guide members 24 pass through the two bar holes 231 respectively, and are clamped to the first blocking member 22 by two nuts 51 respectively, as shown in FIG. Figure 8 and Fig. 9 As shown, during assembly, the distance between the two guide members 24 can be adjusted to adapt to negative pressure interfaces 17 of different sizes.

[0066] As another example, the guide portion may include a guide rod arranged in the sealing cover 15, the guide rod is parallel to the axis of the negative pressure interface 17, the first blocking member 22 is provided with a guide hole adapted to the guide rod, and the first blocking member 22 is sleeved on the guide rod through the guide hole, so that the movement process of the first blocking member 22 can be guided by utilizing the cooperation between the guide hole and the guide rod, and the purpose of strictly controlling the movement path of the first blocking member 22 can also be achieved.

[0067] Example 4

[0068] The existing adsorption table 1 usually has the problem of uneven distribution of negative pressure adsorption force, which not only causes the adsorbed fabric to be not flat, but also causes the fabric adsorption to be unreliable. During the sewing process, the fabric is easy to move or warp, which seriously affects the sewing effect and sewing accuracy. In order to solve this technical problem, the main difference between this embodiment and the above-mentioned embodiment 1 or embodiment 2 or embodiment 3 is that in the adsorption system provided by this embodiment, a sinking groove 13 is further provided in the table surface of the adsorption table 11, such as Figure 10-12 As shown, a top plate 61 is installed in the sinking trough 13, and each adsorption hole 12 is respectively constructed on the top plate 61; during implementation, the top plate 61 can be installed in the sinking trough 13 by fasteners 5 such as bolts or screws, and the upper surface of the top plate 61 is flush with the upper surface of the adsorption platform 1. On the one hand, it is convenient to process and manufacture the top plate 61 separately; on the other hand, it is convenient to replace the top plate 61, so as to replace the top plate 61 with adsorption holes 12 of different specifications or different arrangements according to actual needs, so as to meet the adsorption needs of different fabrics and different occasions.

[0069] like Figure 10-12As shown, a partition 62 is provided below the top plate 61, and the partition 62 is provided with a plurality of evenly distributed air distribution holes 63. In implementation, the air distribution holes 63 on the partition 62 can be evenly arranged in a matrix, such as Fig.11 As shown, the distance between two adjacent air distribution holes 63 can be determined according to actual needs.

[0070] like Fig.12 As shown, the sealing cover 15 can be connected to the partition 62 or to the lower surface of the adsorption platform 1, and cover each air distribution hole 63, so that each air distribution hole 63 is connected to the negative pressure chamber 16. Fig.12 As shown, there is an air distribution cavity 64 between the top plate 61 and the partition plate 62, and each adsorption hole 12 is respectively connected to the air distribution cavity 64, and the air distribution cavity 64 is connected to the negative pressure cavity 16 through the air distribution hole 63. When in use, a relatively larger negative pressure can be formed in the negative pressure cavity 16, and the negative pressure cavity 16 itself can also play a role in balancing the pressure. The suction force of the negative pressure can act on the air distribution cavity 64 more dispersedly through each air distribution hole 63, so that the negative pressure distribution in the air distribution cavity 64 is more uniform, so that the outside air can be more evenly inhaled through the adsorption hole 12, and then a more uniform negative pressure can be formed above the top plate 61, which not only allows the fabric on the top plate 61 to obtain a more uniform adsorption force, making the fabric after adsorption smoother, but also facilitates more reliable adsorption of the fabric on the top plate 61, and is not prone to the problem of fabric movement or warping during sewing, which is conducive to improving sewing effect and sewing accuracy.

[0071] In this embodiment, the shape of the sealing cover 15 can be determined according to actual needs. In the preferred implementation provided in this embodiment, the sealing cover 15 is constructed as a funnel-shaped structure, such as Figure 3 , Figure 5 and Fig.12 As shown, for ease of description, the two ends of the funnel-shaped structure are respectively a large end (an end with a relatively large cross-sectional area) and a small end (an end with a relatively small cross-sectional area), the large end faces the partition 62, and the negative pressure interface 17 can be preferentially arranged at the small end of the sealing cover 15, as shown in FIG. Figure 5-Figure 7 As shown, by constructing the sealing cover 15 into a funnel-shaped structure, the cross-sectional area of ​​the negative pressure chamber 16 gradually increases from the small end to the large end, and the volume gradually increases from bottom to top. The small end of the sealing cover 15 is closer to the negative pressure device 3, and the large end of the sealing cover 15 is closer to the partition 62. Such an air path design is more conducive to uniform distribution of negative pressure, so that the air above the top plate 61 is more evenly inhaled, thereby achieving a more uniform, flat and firm adsorption effect of the fabric.

[0072] During implementation, the negative pressure interface 17 and the pressure release port 18 are respectively arranged at the small end of the sealing cover 15. Combined with the funnel-shaped structure of the sealing cover 15 and the control mechanism 2, the coordinated cooperation of the three is conducive to obtaining a more uniform adsorption force for the fabric on the top plate 61, making the fabric after adsorption smoother and more secure.

[0073] Example 5

[0074] This embodiment provides a sewing machine, including the adsorption system.

[0075] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adsorption system, characterized in that: It includes an adsorption platform, a negative pressure device, a control mechanism and a control module, wherein: The adsorption platform includes an adsorption platform, a negative pressure cavity, a negative pressure interface and a pressure release port. A plurality of adsorption holes are arranged in the surface of the adsorption platform, and each adsorption hole is respectively connected to the negative pressure cavity; the negative pressure interface and the pressure release port are respectively connected to the negative pressure cavity; The negative pressure device is connected to the negative pressure chamber through a negative pressure interface, and the negative pressure device is connected to the control module; The control mechanism includes power, a first blocking piece adapted to the negative pressure interface, and a second blocking piece adapted to the pressure release port, wherein the power is transmission-connected to the second blocking piece, the second blocking piece is transmission-connected to the first blocking piece, and the power is connected to the control module, and the power is used to drive the second blocking piece to switch between position one and position two under the control of the control module, and drive the first blocking piece to be synchronously linked; When the second blocking piece is in position one, the second blocking piece blocks the pressure release port, the first blocking piece is in a state of opening the negative pressure interface, and the negative pressure device is connected to the negative pressure chamber; when the second blocking piece is in position two, the first blocking piece blocks the negative pressure interface, the second blocking piece is in a state of opening the pressure release port, and the negative pressure chamber is connected to the outside.

2. The adsorption system according to claim 1, characterized in that: The first blocking member is arranged in the negative pressure cavity, and the second blocking member is arranged outside the negative pressure cavity.

3. The adsorption system according to claim 1, characterized in that: The second blocking member and / or the pressure release port is provided with a sealing ring. When the second blocking member is in position one, the sealing ring is pressed tightly between the second blocking member and the pressure release port.

4. The adsorption system according to claim 1, characterized in that: The first blocking member and / or the negative pressure interface is provided with a sealing ring. When the first blocking member blocks the negative pressure interface, the sealing ring is pressed tightly between the first blocking member and the negative pressure interface.

5. The adsorption system according to claim 3, characterized in that: The pressure release port is circular in shape; the second blocking member is provided with a disc portion adapted to fit the pressure release port; And / or, the second blocking member is constructed with a circle of steps adapted to the pressure release port, and a sealing ring is arranged inside the step.

6. The adsorption system according to claim 1, characterized in that: The negative pressure interface and the pressure release port are arranged adjacent to each other, and the central axis of the negative pressure interface is parallel to the central axis of the pressure release port. The power used is telescopic power, which drives the second blocking member to move back and forth in a straight line through telescopic movement.

7. The adsorption system according to claim 1, characterized in that: The power is a pneumatic cylinder, an electric push cylinder or a hydraulic cylinder; the control module includes a PLC or a timer.

8. The adsorption system according to claim 1, characterized in that: It also includes a sealing cover, which is connected to the bottom of the adsorption platform and covers the area corresponding to the adsorption hole, and a closed negative pressure chamber is formed between the sealing cover and the adsorption platform, the negative pressure interface and the pressure release port are respectively arranged on the sealing cover, and the power is fixed to the sealing cover; It also includes a guide portion, and the first blocking member moves along the guide portion under the driving of power.

9. A sewing machine, characterized in that: The invention comprises the adsorption system described in any one of claims 1 to 8.

10. An adsorption process, characterized in that: The adsorption system according to any one of claims 1 to 8 comprises: (1) The process of adsorbing the fabric includes: laying the fabric on the adsorption platen and covering the adsorption hole; the control module controls the power to drive the second blocking member, so that the second blocking member switches from position two to position one, the second blocking member blocks the pressure release port, and the first blocking member is in a state of opening the negative pressure interface, and the negative pressure device is in a state of being connected to the negative pressure chamber through the negative pressure interface; then the control module controls the negative pressure device to start, and uses the negative pressure device to put the negative pressure chamber in a negative pressure state; (2) The process of removing the fabric includes: the control module first controls the power to drive the second blocking member, so that the second blocking member switches from position one to position two, and simultaneously controls the negative pressure device to close, so that the second blocking member opens the pressure release port, and the negative pressure chamber is connected to the outside through the pressure release port.

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