An adsorption system, a sewing machine and an adsorption process

Abstract

The present application relates to a kind of adsorption system, sewing machine and adsorption process, including adsorption platform, negative pressure equipment, control mechanism and control module, adsorption platform includes adsorption platform plate, negative pressure cavity, negative pressure interface and pressure release port, the table top of adsorption platform plate is provided with adsorption hole, and adsorption hole is connected with negative pressure cavity;Negative pressure equipment is connected with negative pressure cavity by negative pressure interface, and negative pressure equipment is connected with control module;Control mechanism includes power, first plugging, second plugging, power and second plugging transmission connection, second plugging and first plugging transmission connection are connected, power and control module are connected, for driving second plugging switch between position one and position two, and drive first plugging linkage;The present adsorption system, not only use more convenient, use efficiency is higher, and can effectively protect the motor in negative pressure equipment, ensure that system can be more efficient, more stable operation.

Description

Technical Field

[0001] This invention relates to the field of sewing equipment technology, specifically to an adsorption system, a sewing machine, and an adsorption process. Background Technology

[0002] Sewing machines are common sewing equipment. Because they can automatically and quickly sew various materials and patterns under the precise control of their computer systems, they are widely used in the production of quilts, bedspreads, sleeping bags, mattresses, textile decorations, and clothing. Existing sewing machines not only include a housing, needle bar mechanism, presser foot mechanism, and rotary hook mechanism, but also typically feature an adsorption table for laying fabric flat. This adsorption table usually has adsorption holes on its surface, and also includes a negative pressure generating device (referred to as a negative pressure device) connected to these holes. During use, the negative pressure device generates negative pressure at the adsorption holes, creating an adsorption force on the fabric to achieve the purpose of restraining the fabric without damage, thus facilitating subsequent sewing work.

[0003] Existing adsorption tables maintain a relatively closed relationship between the negative pressure device and the table surface. Typically, only adsorption holes for fabric adsorption are located on the table surface. In actual operation, the fabric is laid on the table surface, covering the adsorption holes. The negative pressure device is activated, generating negative pressure that allows outside air to enter the adsorption table only through the adsorption holes, creating negative pressure suction at the holes to adsorb the fabric. Because the connection between the negative pressure device and the adsorption holes is sealed to prevent air leakage and improve adsorption efficiency, in practice, the fabric (such as clothing) is usually first laid flat on the table surface, covering the adsorption holes, and its position and orientation are adjusted before... The negative pressure device is activated to hold the fabric in place before sewing. However, when removing the fabric from the suction table, the device must be turned off first, and the fabric must wait for the negative pressure throughout the entire connection path to decrease. This process has two main drawbacks: First, it requires a waiting time, which is detrimental to sewing and production efficiency. Second, because the connection path between the negative pressure device and the suction holes is sealed, and the fabric initially covers the holes during use, the entire connection path becomes even more airtight. This is especially problematic when the fabric is thick or non-breathable, leading to a significant increase in the starting current of the negative pressure device when it is activated. This can cause problems such as the device failing to start or even burning out the motor, which urgently needs to be addressed. Summary of the Invention

[0004] The first aspect of this invention addresses the aforementioned technical problems by providing an adsorption system that offers higher efficiency and effectively protects the motor in negative pressure equipment, ensuring more efficient and stable operation of the adsorption system. The main concept is as follows:

[0005] An adsorption system includes an adsorption platform, a negative pressure device, a control mechanism, and a control module. The adsorption platform includes an adsorption plate, a negative pressure chamber, a negative pressure interface, and a pressure release port. The adsorption plate has multiple adsorption holes on its surface, each hole communicating with 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 via the negative pressure interface and is also connected to the control module. The control mechanism includes a power source, a first sealing element adapted to the negative pressure interface, and a second sealing element adapted to the pressure release port. The second sealing component is driven and connected to the first sealing component. The power source is connected to the control module. The power source is used to drive the second sealing component to switch between position one and position two under the control of the control module, and to drive the first sealing component to move synchronously. When the second sealing component is in position one, the second sealing component blocks the pressure release port, and the first sealing component is in the state of opening the negative pressure interface, and the negative pressure device is connected to the negative pressure chamber. When the second sealing component is in position two, the first sealing component blocks the negative pressure interface, and the second sealing component is in the state of opening the pressure release port, and the negative pressure chamber is connected to the outside. In this solution, by configuring a first sealing component, the connection / disconnection between the negative pressure interface and the negative pressure chamber can be controlled. By configuring a pressure relief port, the negative pressure chamber can be connected to the outside world, allowing for faster and more efficient balancing of the internal pressure within the negative pressure chamber. This facilitates faster and more efficient loss of adhesion to the fabric, enabling faster fabric removal and improving sewing and production efficiency. By configuring a second sealing component, the connection / disconnection between the pressure relief port and the outside world can be controlled. By connecting the first and second sealing components and connecting the power supply to the second sealing component, the power supply can drive the first and second sealing components to move synchronously. Combined with the control module, this allows the control mechanism and the negative pressure device to work together. The device can work collaboratively under the precise control of the control module. On the one hand, it can simultaneously open the negative pressure interface and close the pressure release port when starting the negative pressure device, allowing the negative pressure device to start at a lower negative pressure or normal pressure. This effectively protects the negative pressure device and solves the problem of the negative pressure device failing to start or even burning out the motor. On the other hand, it can lose its negative pressure adsorption capacity more quickly and efficiently, thus greatly shortening the waiting time and improving efficiency. In addition, by simultaneously closing the negative pressure interface and the negative pressure device when opening the pressure release port, a relatively high negative pressure can be maintained between the first sealing component and the negative pressure device before the negative pressure device is restarted. This portion of negative pressure can be used when the negative pressure device is started again, thus saving energy.

[0006] Preferably, the first sealing element is disposed inside the negative pressure chamber, and the second sealing element is disposed outside the negative pressure chamber. This not only simplifies the structure but also allows the first and second sealing elements to cooperate more effectively under the control of the control module.

[0007] To address the issue of energy efficiency, preferably, the second sealing element and / or pressure relief port are equipped with a sealing ring. When the second sealing element is in position one, the sealing ring is pressed tightly between the second sealing element and the pressure relief port. By configuring the sealing ring, the sealing performance between the second sealing element and the pressure relief port is improved, preventing air leakage and better maintaining the vacuum level of the negative pressure chamber. This reduces energy consumption during the use of the negative pressure equipment, resulting in greater energy savings.

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

[0009] Preferably, the pressure relief port is circular; the second sealing member has a disc portion adapted to the pressure relief port. Through the cooperation between the disc portion and the circular pressure relief port, there are no dead angles in the fit, which not only facilitates the second sealing member's disengagement from the pressure relief port under dynamic action, but also reduces the difficulty of fitting and improves airtightness.

[0010] Preferably, the second sealing element has a stepped structure that adapts to the pressure relief port, and a sealing ring is provided within the stepped structure. Through the cooperation of the stepped structure, the sealing ring, and the pressure relief port, not only can the airtightness be further improved, but the second sealing element can also be driven away from the pressure relief port with less effort, requiring less power and reducing the likelihood of jamming or failure to open under negative pressure, thus effectively improving reliability.

[0011] The second aspect of this invention addresses the problem of improving operational reliability. Preferably, the negative pressure port and the pressure relief port are arranged adjacent to each other, and the central axis of the negative pressure port is parallel to the central axis of the pressure relief port. The power source is a telescopic force, which drives the second sealing element to move linearly through telescopic movement. This causes the first and second sealing elements to move synchronously in a linear fashion. The structure is simple and efficient, not only improving response speed and operational efficiency, but also allowing the negative pressure port and the pressure relief port to respectively limit the movement of the first and second sealing elements, thereby improving reliability during operation.

[0012] Preferably, the power source is a pneumatic cylinder, an electric actuator, or a hydraulic cylinder. This not only results in a simple structure and low cost, but also enables reciprocating movement.

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

[0014] A third aspect of this invention addresses the problem of improving the fitting accuracy between the first sealing member and the negative pressure interface. Further, the second sealing member is constructed with a mounting hole, and the first sealing member is connected to a connecting portion. The connecting portion is constructed with a slotted hole adapted to the mounting hole. The first sealing member is vertically connected to the second sealing member via fasteners that adapt to the slotted hole and the mounting hole. In this solution, vertically connecting the first sealing member to the second sealing member via fasteners that adapt to the slotted hole and the mounting hole not only facilitates the separate production and manufacturing of the first and second sealing members and the disassembly and replacement of the first and second sealing members, but also utilizes the fit between the slotted hole and the mounting hole to eliminate the influence of manufacturing and assembly errors, ensuring that the first sealing member can be installed directly opposite the negative pressure interface, thus improving the fitting accuracy between the first sealing member and the negative pressure interface.

[0015] A fourth aspect of this invention addresses the problem of improving the stability and reliability of the first sealing member during movement. Further, it includes a guide portion along which the first sealing member moves under the drive of power. This ensures that the first sealing member moves strictly along the guide portion, unaffected by external factors, thus improving the stability and reliability of the first sealing member during movement.

[0016] Preferably, the guide portion includes at least two guide members, one end of which is connected to the first sealing member, and the other end is inserted into the negative pressure interface. Through the cooperation between the guide members and the sidewall of the negative pressure interface, the first sealing member is effectively restricted and constrained, allowing it to move strictly in the direction close to or away from the negative pressure interface under the drive of power. This facilitates a more stable and reliable cooperation between the first sealing member and the negative pressure interface.

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

[0018] The fifth aspect of this invention addresses the problem that existing adsorption tables result in uneven and unstable fabrics after adsorption, affecting sewing quality. Further, the adsorption table has a recessed groove within its surface, and a top plate is installed within the groove. Each adsorption hole is constructed on the top plate. A partition is located below the top plate, and the partition has multiple evenly distributed air holes. A sealing cover covers each air hole. An air-fabricating chamber is located between the top plate and the partition, and each adsorption hole communicates with the air-fabricating chamber. The air-fabricating chamber is connected to a negative pressure chamber through the air holes. In this design, a top plate is configured to support the fabric. A partition is installed below the top plate, forming an air-fabricating chamber between it and the partition. Multiple air-fabricating holes are constructed in the partition, connecting the air-fabricating chamber to the negative pressure chamber. During use, a relatively larger negative pressure is generated within the negative pressure chamber, which also acts as a pressure equalizer. The suction force of the negative pressure is more dispersed throughout the air-fabricating chamber via the air-fabricating holes, resulting in a more uniform negative pressure distribution. This allows for more even intake of outside air through the adsorption holes, creating a more uniform negative pressure above the top plate. This not only provides a more uniform adsorption force for the fabric on the top plate, resulting in a smoother fabric after adsorption, but also ensures a more secure adsorption of the fabric, reducing the likelihood of fabric movement or curling during sewing. This improves sewing quality and precision.

[0019] To further improve the uniformity of negative pressure, preferably, the sealing cover is constructed in a funnel shape, with a large end and a small end at each end. The large end faces the partition, and the negative pressure interface and pressure release port are respectively located at the small end of the sealing cover. In this design, by constructing the sealing cover in a funnel shape, 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. Furthermore, the small end of the sealing cover is closer to the negative pressure device, and the large end is closer to the partition. This airflow design is more conducive to the uniform distribution of negative pressure, allowing for more even intake of air above the top plate, thereby achieving a more uniform, flat, and reliable adsorption effect on the fabric.

[0020] A sewing machine including the aforementioned adsorption system.

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

[0022] (1) The process of adsorbing the fabric includes: laying the fabric on the adsorption platform and covering the adsorption holes; the control module controls the power to drive the second sealing component, so that the second sealing component switches from position two to position one, the second sealing component seals the pressure release port, and the first sealing component is in the state of opening the negative pressure interface, and the negative pressure device is in the 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 make 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 sealing component, so that the second sealing component switches from position one to position two, and simultaneously controls the negative pressure device to close, so that the second sealing component opens the pressure release port, and the negative pressure chamber is connected to the outside through the pressure release port.

[0024] Furthermore, the fabric adsorption process also includes: after the negative pressure equipment is started, the control module delays the shutdown of the negative pressure equipment. This not only achieves energy saving, but also, in some cases, the adsorption force at the adsorption holes can be more durable and stable, effectively meeting the needs of adsorbing and fixing the fabric during sewing for a period of time after the negative pressure equipment is shut down.

[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 also can effectively protect the motor in the negative pressure equipment, ensuring that the adsorption system can operate more efficiently and stably. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

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

[0028] Figure 2 for Figure 1 A magnified view of a portion of point I in the middle.

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

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

[0031] Figure 5 for Figure 4 The cross-sectional view at point AA shows the second sealing element at position one.

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

[0033] Figure 7 for Figure 4The cross-sectional view shows the second sealing element at position two.

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

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

[0036] Figure 10 This is a three-dimensional structural schematic diagram of an adsorption system provided in Embodiment 4 of the present invention.

[0037] Figure 11 This is a partial structural diagram of the adsorption platform in an adsorption system provided in Embodiment 4 of the present invention.

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

[0039] The markings in the diagram are as follows: Adsorption platform 1, Adsorption plate 11, Adsorption hole 12, Sinking tank 13, Frame 14, Sealing cover 15, Negative pressure chamber 16, Negative pressure interface 17, Pressure release port 18, Connecting cylinder 19; Control mechanism 2, Power 21, Output shaft 211, First sealing component 22, Connecting part 23, Strip hole 231, Guide component 24, Second sealing component 25, Disc part 26, Step 261, Extension part 27, Mounting hole 271, Sealing ring 28; Negative pressure device 3, Pipeline 31; Control module 4; Fastener 5, Nut 51; Top plate 61, Partition 62, Air distribution hole 63, Air distribution chamber 64. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] Example 1

[0042] This embodiment provides an adsorption system, including an adsorption platform 1, a negative pressure device 3, a control mechanism 2, and a control module 4. The adsorption platform 1 includes an adsorption plate 11, a frame 14, a negative pressure chamber 16, a negative pressure interface 17, and a pressure release port 18. The frame 14 is typically located below the adsorption plate 11 and primarily supports it. In this embodiment, the adsorption plate 11 can preferably be a plate-like structure, with its upper surface being flat to better accommodate fabrics such as clothing and quilts. Figure 1 As shown, in this embodiment, the adsorption platform 11 adopts a rectangular structure, and multiple adsorption holes 12 are provided within the platform surface. During implementation, the adsorption holes 12 can be arranged in various ways to meet the needs of different fabrics and occasions. For example, the adsorption holes 12 can be arranged uniformly in a matrix, so that the entire array of adsorption holes 12 forms a rectangle; or, the adsorption holes 12 can be evenly arranged, and all the adsorption holes 12 together form a ring, such as... Figure 1 and Figure 2 As shown, this facilitates a more uniform, flat, and reliable adsorption of the fabric. In implementation, the adsorption holes 12 can preferably be round holes, but strip-shaped holes, etc., can also be used.

[0043] The aperture of the adsorption hole 12 is preferably smaller than or equal to the aperture of the air distribution hole 63. 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 gas passing through the adsorption hole 12 per unit time. This allows the adsorption force at the adsorption hole 12 to last longer when the negative pressure device 3 is closed in advance. It can effectively meet the needs of adsorbing and fixing the fabric during sewing for a period of time after the negative pressure device 3 is closed, thus 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, the negative pressure port 17 and the pressure release port 18 are connected to the negative pressure chamber 16.

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

[0046] In this embodiment, the control mechanism 2 is mainly used to open / close the negative pressure interface 17 and the pressure relief port 18. In implementation, the control mechanism 2 includes a power source 21, a first sealing element 22 adapted to the negative pressure interface 17, and a second sealing element 25 adapted to the pressure relief port 18. The power source 21 is connected to the second sealing element 25 via a transmission connection. Figures 5-7 As shown, the second sealing element 25 is connected to the first sealing element 22 via a transmission, so that the power 21 can drive the second sealing element 25 and the first sealing element 22 simultaneously; at the same time, the power 21 is connected to the control module 4, and the power 21 can drive the second sealing element 25 to switch between position one and position two under the control of the control module 4, and drive the first sealing element 22 to move in conjunction.

[0047] When the second sealing element 25 is in position one, such as Figure 5 and Figure 6 As shown, at this time, the second sealing member 25 blocks the pressure release port 18, so that the negative pressure chamber 16 is not connected to the outside. At the same time, the first sealing member 22 is located away from the negative pressure interface 17. The first sealing member 22 is in the 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 above the adsorption platform 11 for adsorbing the fabric. The adsorption force of the fabric is formed by the negative pressure.

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

[0049] In implementation, the shape and size of the first sealing element 22 are adapted to the negative pressure interface 17; simultaneously, the shape and size of the second sealing element 25 are adapted to the pressure relief port 18; during assembly, the first sealing element 22 is preferably placed inside the negative pressure chamber 16, such as... Figures 5-7 As shown, the second sealing element 25 is disposed outside the negative pressure chamber 16, which not only simplifies the structure, but also allows the first sealing element 22 and the second sealing element 25 to cooperate more efficiently and in a more coordinated manner under the control of the control module 4.

[0050] In 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, in implementation, the shape of the pressure relief port 18 can also be determined according to actual needs; for example, the pressure relief 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 various implementation methods for forming the negative pressure chamber 16. For example, in some implementations, the negative pressure chamber 16 can be constructed within the adsorption platform 11, located below the adsorption hole 12 and connected to it. Furthermore, in other preferred implementations, a sealing cover 15 is also included, such as... Figures 3-7 As shown, the sealing cover 15 is connected to the bottom of the adsorption table 1 and covers the area corresponding to the adsorption hole 12. In implementation, the sealing cover 15 can be welded to the adsorption table 1, or it can be detachably installed on the adsorption table 1 using fasteners 5 such as bolts or screws, which facilitates the installation and removal of the sealing cover 15. After the sealing cover 15 is connected to the adsorption table 1, as shown... Figure 3 As shown, a closed negative pressure chamber 16 can be formed between the sealing cover 15 and the adsorption stage 1. At this time, the negative pressure port 17 and the pressure release port 18 can be respectively set in the sealing cover 15, such as... Figures 5-7 As shown, in this embodiment, the pressure relief port 18 is circular. Correspondingly, the second sealing member 25 is constructed with a disc portion 26 adapted to the pressure relief port 18. Through the cooperation between the disc portion 26 and the circular pressure relief port 18, there is no dead angle in the cooperation. This not only helps the second sealing member 25 to detach from the pressure relief port 18 under the action of the power 21, but also helps to reduce the difficulty of cooperation and improve airtightness.

[0051] like Figure 5 and Figure 6 As shown, in this embodiment, the negative pressure interface 17 is also constructed as a circle. In order to facilitate the connection of the pipe 31, a connecting cylinder 19 is also provided on the outside of the sealing cover 15. The connecting cylinder 19 is coaxial with the negative pressure interface 17 so that the negative pressure interface 17 can be connected more conveniently and reliably through the connecting cylinder 19.

[0052] like Figure 5 and Figure 6As shown, in this embodiment, the negative pressure port 17 and the pressure relief port 18 are arranged adjacent to each other, and the central axis of the negative pressure port 17 is parallel to the central axis of the pressure relief port 18. The second sealing member 25 can be blocked or opened by simply using the power 21 to drive the second sealing member 25 to move linearly along the central axis of the pressure relief port 18. Simultaneously, the second sealing member 25 can synchronously drive the first sealing member 22 to move linearly along the central axis of the negative pressure port 17, thereby synchronously blocking or opening the negative pressure port 17. Based on this, in implementation, the power 21 can be a motor, connected to an existing linear transmission mechanism (such as a gear-rack mechanism, a lead screw-nut 51 transmission mechanism, etc.). The linear transmission mechanism is connected to the second sealing member 25, driving the second sealing member 25 to reciprocate linearly. In the preferred embodiment provided in this example, the power source 21 can preferably be a telescopic power source 21. The telescopic direction of the power source 21 is coaxial with the second sealing member 25 or the pressure relief port 18, so that the power source 21 can drive the second sealing member 25 to move linearly back and forth through telescopic movement, thereby driving the first sealing member 22 and the second sealing member 25 to move linearly back and forth synchronously. The structure is simple and efficient, which not only helps to improve the response speed and action efficiency, but also the negative pressure port 17 and the pressure relief port 18 can respectively limit the first sealing member 22 and the second sealing member 25, thereby helping to improve the reliability of the action process.

[0053] In implementation, the power source 21 can preferably be a pneumatic cylinder or an electric actuator (or electric push rod), which has a simple structure and low cost. Of course, in implementation, the power source 21 can also be a hydraulic cylinder. For example, as... Figures 3-7 As shown, the power source 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 sealing member 25 away from the negative pressure chamber 16, and is coaxial with the second sealing member 25 or the pressure relief port 18, as shown. Figure 5 and Figure 6 As shown, during use, the second sealing component 25 can be driven to quickly open or close the pressure relief port 18 by extending or retracting the cylinder.

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

[0055] In practice, the inner diameter of the pressure relief port 18 can be preferably configured to be greater than or equal to the inner diameter of the negative pressure port 17, which is conducive to releasing negative pressure more quickly and efficiently, so as to remove the fabric more efficiently.

[0056] In a more refined embodiment, the second sealing element 25 and / or the pressure relief port 18 are further provided with a sealing ring 28. When the second sealing element 25 is in one position, the sealing ring 28 is precisely pressed between the second sealing element 25 and the pressure relief port 18. In practice, by configuring the sealing ring 28, the sealing performance between the second sealing element 25 and the pressure relief port 18 is improved, preventing air leakage between them. This is more conducive to maintaining the vacuum level of the negative pressure chamber 16, reducing the energy consumption of the negative pressure device 3 during use, and making it more energy-efficient. In practice, the sealing ring 28 can be attached to the second sealing element 25 or the pressure relief port 18. Preferably, the second sealing element 25 is also constructed with a step 261 that adapts to the pressure relief port 18. The step 261 can be specifically constructed on the disc portion 26, such as... Figure 8 and Figure 9 As shown, the sealing ring 28 is disposed within the step 261. On the one hand, the sealing ring 28 and the disc portion 26 have a larger contact area and bonding area, making it 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 relief port 18, not only can the airtightness be further improved, but the power 21 can also drive the second sealing component 25 to disengage from the pressure relief port 18 with less effort. The power requirement for the power 21 is lower, and it is less likely to cause problems such as jamming or inability to open under negative pressure, effectively improving reliability.

[0057] Similarly, in implementation, a sealing ring 28 can also be configured on the first sealing element 22 and / or the negative pressure interface 17, so that when the first sealing element 22 seals the negative pressure interface 17, the sealing ring 28 is pressed tightly between the first sealing element 22 and the negative pressure interface 17, thereby achieving 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 communicatively connected to the power unit 21 in the control mechanism 2, but also communicatively connected to the negative pressure device 3 (specifically, communicatively connected to the motor in the negative pressure device 3), such as... Figure 1 As shown, in actual operation, the control module 4 controls the control mechanism 2 and the negative pressure device 3 to work together, which can improve efficiency and effectively protect the motor in the negative pressure device 3, thus increasing the service life of the negative pressure device 3. Specifically, this embodiment also relates to an adsorption process based on the adsorption system, including (1) when adsorbing fabric (or when starting the negative pressure for the first time): the fabric is laid on the adsorption platform 11 and the adsorption hole 12 is covered; the control module 4 controls the power 21 to drive the second sealing member 25, so that the second sealing member 25 switches from position two to position one. At this time, the second sealing member 25 blocks the pressure release port 18, and the first sealing member 22 is in the state of opening the negative pressure interface 17. The negative pressure device 3 is connected to 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 sealing member 22. The high negative pressure between the two; then the control module 4 controls the negative pressure device 3 to start, and begins 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 has been working 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 automatically shut down after a delay. This not only achieves the purpose of energy saving, but also, in some cases, 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 stable. It 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 shut down. 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 start under the vacuum state of the negative pressure interface 17 blocked by the first sealing part 22. This allows the negative pressure device 3 to start 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 starting failure or even motor burnout.

[0059] (2) When the fabric needs to be removed: the control module 4 first controls the power 21 to drive the second sealing component 25 to move, so that the second sealing component 25 switches from position one to position two, and simultaneously controls the negative pressure device 3 to close. At this time, the second sealing component 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 released quickly. On the one hand, it is beneficial for the adsorption hole 12 to lose its negative pressure adsorption capacity more quickly and efficiently, and the fabric can be removed earlier and faster, greatly shortening the waiting time and improving sewing efficiency and production efficiency. On the other hand, the first sealing component 22 and the negative pressure device 3 can also maintain a relatively high negative pressure, which can be used when the negative pressure device 3 is started next time, thus saving more energy.

[0060] Example 2

[0061] To improve the fitting accuracy between the first sealing element 22 and the negative pressure interface 17, the main difference between this embodiment 2 and the above-mentioned embodiment 1 is that the adsorption system provided in this embodiment also has a mounting hole 271 in the second sealing element 25, for example, as Figure 8 and Figure 9 As shown, the mounting hole 271 can be constructed at the end of the extension 27 in the second sealing member 25. Correspondingly, the first sealing member 22 is connected to a connecting portion 23, and the connecting portion 23 is constructed with a slot 231 adapted to the mounting hole 271, such as... Figure 8 and Figure 9 As shown, the first sealing element 22 can be vertically connected to the second sealing element 25 through the fastener 5 of the adapter hole 231 and the mounting hole 271, as shown. Figure 8 and Figure 9 As shown.

[0062] In this embodiment, the first sealing member 22 is vertically connected to the second sealing member 25 via fasteners 5 that fit the slot 231 and mounting hole 271. This not only facilitates the separate production and manufacturing of the first sealing member 22 and the second sealing member 25, and the disassembly and replacement of the first sealing member 22 and the second sealing member 25, but also allows for adjustment of the relative positions of the first sealing member 22 and the second sealing member 25 by utilizing the fit between the slot 231 and the mounting hole 271. This effectively eliminates the influence of manufacturing and assembly errors, ensuring that the first sealing member 22 can be installed facing the negative pressure interface 17. This improves the fitting accuracy between the first sealing member 22 and the negative pressure interface 17 and effectively enhances the versatility of the system.

[0063] Example 3

[0064] The main difference between this embodiment 3 and the above embodiment 1 or embodiment 2 is that the adsorption system provided in this embodiment also includes a guide section. The first sealing member 22 can move along the guide section under the drive of the power 21, so that the first sealing member 22 moves strictly along the guide section and is not affected by external factors.

[0065] In implementation, the guide portion can be implemented in various ways, and the appropriate method can be selected according to actual needs. For example, the guide portion can be disposed on the first sealing member 22. For instance, the guide portion includes at least two guide members 24, one end of which is connected to the first sealing member 22, and the other end is inserted into the negative pressure interface 17. The guide members 24 are parallel to the axis of the negative pressure interface 17, and each guide member 24 can contact the side wall of the negative pressure interface 17. Figures 5-9As shown, the cooperation between the guide member 24 and the side wall of the negative pressure interface 17 effectively restricts and constrains the first sealing member 22, allowing the first sealing member 22 to move strictly along the direction close to or away from the negative pressure interface 17 under the drive of the power 21. This facilitates a more stable and reliable cooperation between the first sealing member 22 and the negative pressure interface 17, and the guide part of this structure does not affect the communication between the negative pressure device 3 and the negative pressure chamber 16. In implementation, the guide member 24 can preferably be a cylindrical rod, screw, or bolt, etc. For example, in this embodiment, the first sealing member 22 is provided with two oppositely arranged guide members 24. The guide members 24 are constructed with external threads, and the first sealing member 22 is constructed with slots 231 adapted to the guide members 24. The two slots 231 are arranged collinearly, and the two guide members 24 pass through the two slots 231 respectively, and are clamped to the first sealing member 22 by two nuts 51 respectively. Figure 8 and Figure 9 As shown, during assembly, the distance between the two guides 24 can be adjusted to accommodate negative pressure interfaces 17 of different sizes.

[0066] As another example, the guide part may include a guide rod disposed inside the sealing cover 15. The guide rod is parallel to the axis of the negative pressure interface 17. The first sealing member 22 is provided with a guide hole adapted to the guide rod. The first sealing member 22 is sleeved on the guide rod through the guide hole so as to guide the movement process of the first sealing member 22 by utilizing the cooperation between the guide hole and the guide rod, and also to achieve the purpose of strictly controlling the movement path of the first sealing member 22.

[0067] Example 4

[0068] Existing adsorption platforms 1 often suffer from uneven distribution of negative pressure adsorption force, resulting in uneven adsorption of the fabric and weak adsorption. During sewing, the fabric easily shifts or curls, severely affecting sewing quality and precision. To solve this technical problem, the main difference between this embodiment and the aforementioned embodiments 1, 2, or 3 is that the adsorption system provided in this embodiment includes a recessed groove 13 within the surface of the adsorption platform 11. Figures 10-12 As shown, a top plate 61 is installed in the sink trough 13, and each adsorption hole 12 is constructed on the top plate 61. In practice, the top plate 61 can be installed in the sink trough 13 by fasteners such as bolts or screws, and the upper surface of the top plate 61 is flush with the upper surface of the adsorption table 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 that it can be replaced with a top plate 61 with different specifications or different arrangements of adsorption holes 12 according to actual needs, so as to meet the adsorption needs of different fabrics and different occasions.

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

[0070] like Figure 12 As shown, the sealing cover 15 can be connected to the partition 62 or to the lower surface of the adsorption stage 1, and covers each air distribution hole 63, so that each air distribution hole 63 is connected to the negative pressure chamber 16. Figure 12 As shown, an air distribution chamber 64 is located between the top plate 61 and the partition plate 62. Each adsorption hole 12 is connected to the air distribution chamber 64, and the air distribution chamber 64 is connected to the negative pressure chamber 16 through air distribution holes 63. During use, a relatively larger negative pressure can be formed within the negative pressure chamber 16, and the negative pressure chamber 16 itself can also play a role in balancing pressure. The suction force of the negative pressure can be more dispersed across the air distribution chamber 64 through each air distribution hole 63, making the negative pressure distribution within the air distribution chamber 64 more uniform. This allows for more even intake of outside air through the adsorption holes 12, thereby forming a more uniform negative pressure above the top plate 61. This not only allows the fabric on the top plate 61 to obtain a more uniform adsorption force, making the adsorbed fabric flatter, but also facilitates more reliable adsorption of the fabric on the top plate 61, reducing the likelihood of fabric movement or curling during sewing, thus improving sewing effect and precision.

[0071] In this embodiment, the shape of the sealing cover 15 can be determined according to actual needs. In the preferred embodiment provided in this embodiment, the sealing cover 15 is constructed as a funnel-shaped structure, such as... Figure 3 , Figure 5 and Figure 12 As shown, for ease of description, the two ends of the funnel-shaped structure are a large end (the end with a relatively larger cross-sectional area) and a small end (the end with a relatively smaller cross-sectional area), respectively. The large end faces the partition 62, while the negative pressure interface 17 can preferably be located at the small end of the sealing cover 15, as shown. Figures 5-7 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 the bottom to the top. Furthermore, 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. This air path design is more conducive to the uniform distribution of negative pressure, allowing the air above the top plate 61 to be drawn in more evenly, thereby achieving a more uniform, flat, and reliable adsorption effect on the fabric.

[0072] During implementation, the negative pressure port 17 and the pressure release port 18 are respectively located 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 action of the three helps the fabric on the top plate 61 to obtain a more uniform adsorption force, making the adsorbed fabric flatter and more secure.

[0073] Example 5

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

[0075] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection 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, among which, The adsorption platform includes an adsorption platform, a negative pressure chamber, a negative pressure interface, and a pressure release port. The adsorption platform has multiple adsorption holes on its surface, each of which is connected to the negative pressure chamber. The negative pressure interface and the pressure release port are connected to the negative pressure chamber. 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 a power source, a first sealing element adapted to a negative pressure interface, and a second sealing element adapted to a pressure release port. The power source is driven to the second sealing element, and the second sealing element is driven to the first sealing element. The power source is connected to a control module. The power source is used to drive the second sealing element to switch between position one and position two under the control of the control module, and to drive the first sealing element to move synchronously. When the second sealing element is in position one, the second sealing element blocks the pressure relief port, and the first sealing element is in the state of opening the negative pressure interface, connecting the negative pressure equipment with the negative pressure chamber; when the second sealing element is in position two, the first sealing element blocks the negative pressure interface, and the second sealing element is in the state of opening the pressure relief port, connecting the negative pressure chamber with the outside.

2. The adsorption system according to claim 1, characterized in that, The first sealing element is disposed inside the negative pressure chamber, and the second sealing element is disposed outside the negative pressure chamber.

3. The adsorption system according to claim 1, characterized in that, The second sealing element and / or pressure relief port are provided with a sealing ring. When the second sealing element is in position one, the sealing ring is pressed between the second sealing element and the pressure relief port.

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

5. The adsorption system according to claim 3, characterized in that, The pressure relief port is circular; the second sealing member has a disc portion adapted to the pressure relief port. And / or, the second sealing element is constructed with a step that adapts to the pressure relief port, and a sealing ring is provided in the step.

6. The adsorption system according to claim 1, characterized in that, The negative pressure port and the pressure relief port are arranged adjacent to each other, and the central axis of the negative pressure port is parallel to the central axis of the pressure relief port. The power is telescopic power, which drives the second sealing component to move linearly back and forth through telescopic movement.

7. The adsorption system according to claim 1, characterized in that, The power source is a pneumatic cylinder, an electric 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 stage and covers the area corresponding to the adsorption hole. A closed negative pressure cavity is formed between the sealing cover and the adsorption stage. The negative pressure interface and the pressure release port are respectively provided on the sealing cover, and the power is fixed to the sealing cover. It also includes a guide section, and the first sealing element moves along the guide section under the drive of power.

9. A sewing machine, characterized in that, Includes the adsorption system according to any one of claims 1-8.

10. An adsorption process, characterized in that, The adsorption system according to any one of claims 1-8 comprises: (1) The process of adsorbing the fabric includes: laying the fabric on the adsorption platform and covering the adsorption holes; the control module controls the power to drive the second sealing component, so that the second sealing component switches from position two to position one, the second sealing component seals the pressure release port, and the first sealing component is in the state of opening the negative pressure interface, and the negative pressure device is in the 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 make the negative pressure chamber in a negative pressure state; (2) The process of removing the fabric includes: the control module first controls the power drive of the second sealing component to switch the second sealing component from position one to position two, and simultaneously controls the negative pressure device to close, so that the second sealing component opens the pressure release port, and the negative pressure chamber is connected to the outside through the pressure release port.

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