Vacuum gas path automatic switching device

Abstract

The utility model discloses a vacuum air path automatic switching device which comprises a pipe body, a plurality of ventilation holes are formed in the pipe body, the ventilation holes are in butt joint with near air holes in a vacuum platform, a lead screw is arranged in the pipe body in a penetrating mode, bearings are arranged at the two ends of the pipe body respectively, and the lead screw is rotationally connected into the pipe body through the bearings at the two ends of the pipe body. A motor is further arranged at one end of the bearing and is in driving connection with the lead screw through a coupler. A plurality of sealing assemblies arranged on the lead screw in a screwed mode are arranged in the pipe body, and the sealing assemblies can move along the lead screw relative to the ventilation holes to achieve opening and closing of the ventilation holes. And the pipe body is also connected with an air pipe joint. The utility model discloses a vacuum gas circuit automatic switching device. The design of vacuum adsorption areas corresponding to products of various sizes is simplified. The vacuum gas circuit design is simplified, hardware use cost is reduced, space is saved, and later maintenance is convenient. The device is high in adaptability and can be used in positive and negative pressure occasions. And when automatic adjustment is switched into manual adjustment, the use requirement can be met.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and in particular to an automatic vacuum circuit switching device. Background Technology

[0002] With the increasing prevalence of industrial automation, manual handling has been gradually replaced by automated handling. Vacuum handling technology, a key component of automated handling, has wide applications in industrial automation, particularly in material handling and workpiece securing. In the semiconductor display industry, vacuum methods are primarily used for product transport and securing. Its main advantages are:

[0003] 1. High-efficiency material handling: Vacuum suction cups can quickly adsorb and release materials, improving production efficiency and are easy to integrate with robots and automated equipment;

[0004] 2. High safety: Vacuum adsorption will not cause mechanical damage to the items being transported, making it particularly suitable for materials with fragile surfaces, such as glass and electronic components;

[0005] 3. Good stability: The vacuum suction cup can provide uniform suction force, ensuring that materials will not slip or fall during transportation;

[0006] 4. High cleanliness: Vacuum adsorption generates little dust, making it suitable for high-cleanliness cleanrooms.

[0007] The principle of vacuum adsorption is mainly achieved by using atmospheric pressure difference, so its disadvantage is also obvious: the vacuum adsorption area cannot leak air.

[0008] To solve this problem, it is generally necessary to design corresponding vacuum circuits for different products. To cope with products of various sizes (in the semiconductor display industry, where products are mainly glass substrates), the industry practice is usually as follows: Step 1: Design corresponding vacuum areas for different product sizes; Step 2: Design vacuum circuits for different vacuum areas, including control and detection functions;

[0009] The main disadvantages of this design method are: when there are many types of products, 1. the vacuum area design is complex; 2. each vacuum circuit needs to include adjustment elements, control elements, detection elements, etc., which results in high cost, large space requirements, and difficult maintenance. Utility Model Content

[0010] This invention overcomes the shortcomings of existing technologies by providing an automatic vacuum circuit switching device, simplifying the design of vacuum adsorption areas for various product sizes. The simplified vacuum circuit design reduces hardware costs, saves space, and facilitates future maintenance. It is highly adaptable and can be used in both positive and negative pressure environments. Automatic switching to manual adjustment is also available to meet specific needs.

[0011] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automatic vacuum circuit switching device, comprising: a tube body, on which a plurality of ventilation holes are provided, the ventilation holes being connected to the near-air holes on the vacuum platform; a lead screw passing through the tube body, bearings being provided at both ends of the tube body, the lead screw being rotatably connected to the tube body through the bearings at both ends of the tube body, and a motor being provided at one end of the bearing, the motor being driven and connected to the lead screw through a coupling; a plurality of sealing components screwed onto the lead screw are provided inside the tube body, the sealing components being able to achieve the opening and closing of the ventilation holes by moving along the lead screw relative to the ventilation holes; and an air pipe connector is also connected to the tube body.

[0012] In a preferred embodiment of the present invention, the sealing assembly includes a nut screwed onto a lead screw, and a plurality of sealing rings are fitted on the nut.

[0013] In a preferred embodiment of this utility model, a plurality of spaced sealing rings are fitted on the nut, the distance between adjacent sealing rings is greater than the diameter of the ventilation hole, and a sealing cavity is separated between adjacent sealing rings and the pipe wall of the pipe body.

[0014] In a preferred embodiment of this utility model, a magnetic ring is fitted on the nut, and a magnetic photoelectric sensor is also provided at the connection between the tube body and the air pipe connector.

[0015] In a preferred embodiment of this invention, the magnetic ring is sleeved in the middle of the nut and displaced between adjacent sealing rings.

[0016] In a preferred embodiment of the present invention, the vacuum platform includes several ventilation pipes disposed on the platform, and multiple vacuum suction holes are provided on the ventilation pipes, and the air inlets on the ventilation pipes are connected to the air exchange holes on the pipe body.

[0017] In a preferred embodiment of this utility model, the external thread on the lead screw is a thread with both forward and reverse rotation; the internal thread in the sealing assembly is a thread with both forward and reverse rotation.

[0018] In a preferred embodiment of this utility model, the air inlet of the ventilation pipe of the vacuum platform is connected to the air exchange hole on the pipe body. The air pipe hole provided on the pipe body is connected to one end of the filter through the air pipe connector. The other end of the filter is connected to the air outlet of the solenoid valve through the speed control valve. The air inlet of the solenoid valve is connected to the vacuum airflow pipe and the air pipe respectively. A pressure gauge is also supported on the passage of the filter and the speed control valve.

[0019] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0020] This utility model discloses an automatic vacuum circuit switching device, which simplifies the design of vacuum adsorption areas for various product sizes. The simplified vacuum circuit design reduces hardware costs, saves space, and facilitates future maintenance. It is highly adaptable and can be used in both positive and negative pressure environments. Automatic switching to manual adjustment is also available to meet specific needs. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 It is a traditional multi-air-path schematic diagram in existing technology;

[0023] Figure 2 This is a schematic diagram of a multi-air-path automatic vacuum path switching device according to this application;

[0024] Figure 3 This is a schematic diagram of the structure of an automatic vacuum circuit switching device according to this application. Figure 1 ;

[0025] Figure 4 yes Figure 3 A schematic diagram of the transverse cross-sectional structure;

[0026] Figure 5 This is a schematic diagram of the structure of an automatic vacuum circuit switching device according to this application. Figure 2 ;

[0027] Figure 6 yes Figure 5 A schematic diagram of the longitudinal sectional structure;

[0028] Figure 7 This is a cross-sectional structural schematic diagram of the sealing component of an automatic vacuum circuit switching device according to this application;

[0029] Among them, 1-vacuum platform, 10-pipe body, 2-motor, 3-coupling, 4-bearing, 5-lead screw, 6-sealing assembly, 7-gas pipe connector, 8-magnetic photoelectric, 11-sealing ring, 12-nut, 13-magnetic ring;

[0030] 101-Filter, 102-Speed ​​control valve, 103-Pressure gauge, 104-Solenoid valve, 105-Vacuum airflow pipeline, 106-Air pipeline. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features therein are detailed descriptions of the present invention, rather than limitations thereof. In the absence of conflict, the embodiments of the present invention and the technical features therein can be combined with each other.

[0032] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Example 1

[0033] like Figures 1-7 As shown, an automatic vacuum path switching device includes a tube body 10 connected to a vacuum platform 1. The vacuum platform 1 includes several ventilation pipes disposed on the platform, each ventilation pipe having multiple vacuum suction holes, and the air inlets on the ventilation pipes communicating with the air exchange holes on the tube body 10.

[0034] Specifically, the tube body 10 is provided with several ventilation holes, which are connected to the near-air holes on the vacuum platform 1. A lead screw 5 is inserted inside the tube body 10, and bearings 4 are respectively provided at both ends of the tube body 10. The lead screw 5 is rotatably connected to the tube body 10 through the bearings 4 at both ends of the tube body 10. A motor 2 is also provided at one end of the bearing 4. The motor 2 is driven by the lead screw 5 through a coupling 3. Several sealing components 6 are provided inside the tube body 10 and screwed on the lead screw 5. The sealing components 6 can achieve the opening and closing of the ventilation holes by moving along the lead screw 5 relative to the ventilation holes. A gas pipe connector 7 is also connected to the tube body 10.

[0035] Furthermore, the sealing assembly 6 includes a nut 12 screwed onto the lead screw 5, and a plurality of sealing rings 11 are fitted onto the nut 12. The nut 12 has several spaced-apart sealing rings 11, the distance between adjacent sealing rings 11 being greater than the diameter of the ventilation hole, and adjacent sealing rings 11 are separated from the pipe wall of the pipe body 10 to form a sealing cavity. The external thread on the lead screw 5 is a thread with both forward and reverse rotation; the internal thread in the sealing assembly 6 is a thread with both forward and reverse rotation.

[0036] Working principle:

[0037] In this invention, due to the use of motor control, high-precision position control can be achieved. Therefore, the platform 1 design allows for a dense and compact arrangement of vacuum air paths to accommodate products of various sizes. The device switches air paths through the movement of a sealed component built into the platform. This device design requires only one vacuum air path, and its pressure regulation, path control, and detection feedback elements are greatly simplified compared to traditional designs, resulting in lower cost, smaller space, and simpler maintenance. High adaptability: This device is not limited to vacuum use; it can also be used in positive pressure environments (such as air flotation applications). Example 2

[0038] Based on Embodiment 1, a magnetic ring 13 is fitted onto the nut 12, and a magnetic photoelectric sensor 8 is also provided at the connection between the tube body 10 and the air pipe connector 7. The magnetic ring 13 is fitted onto the middle of the nut 12 and is positioned between adjacent sealing rings 11.

[0039] In this invention, high-precision position control is achieved through motor control, allowing for a dense and compact arrangement of vacuum air paths in the platform 1 design to accommodate products of various sizes. The device switches air paths via the movement of a sealing component built into the platform. In practical use, personnel cannot accurately and intuitively determine the initial position, making precise control impossible. To address this issue, a magnetic ring 13 is incorporated into the sealing component 6, using a magnetic photoelectric sensor 8 to accurately detect its position. This device incorporates three magnetic photoelectric sensors, corresponding to the left and right limits of the stroke and the origin position, respectively. This design requires only one vacuum air path, significantly simplifying pressure regulation, path control, and detection feedback elements compared to traditional designs, resulting in lower cost, smaller footprint, and easier maintenance. Example 3

[0040] Based on Embodiment 1 or Embodiment 2, the air inlet of the ventilation pipe of the vacuum platform 1 is connected to the air exchange hole on the pipe body 10. The air pipe hole provided on the pipe body 10 is connected to one end of the filter 101 through the air pipe connector 7. The other end of the filter 101 is connected to the air outlet of the solenoid valve 104 through the speed control valve 102. The air inlet of the solenoid valve 104 is connected to the vacuum airflow pipe 105 and the air pipe 106 respectively. A pressure gauge 103 is also connected to the passage of the filter 101 and the speed control valve 102.

[0041] Working principle:

[0042] In this invention, high-precision position control is achieved through motor control, allowing for a dense and compact arrangement of vacuum air paths on platform 1 to accommodate products of various sizes. The device switches air paths by moving a sealing component built into the platform. In practical use, personnel cannot accurately and intuitively determine the initial position, making precise control impossible. To address this issue, a magnetic ring 13 is incorporated into the sealing component 6, using a magnetic photoelectric sensor 8 to accurately detect its position. This device incorporates three magnetic photoelectric sensors, corresponding to the left and right limits of the stroke and the origin position, respectively. This design requires only one vacuum air path, significantly simplifying pressure regulation, path control, and detection feedback elements compared to traditional designs, resulting in lower cost, smaller space, and simpler maintenance. High adaptability: This device is not limited to vacuum use; it can also be used in positive pressure environments (such as air flotation applications). If the motor is removed and replaced with a manual operation, switching air paths can also be achieved by moving the magnetic photoelectric sensor 8 via a sliding groove, in conjunction with a scale indicator.

[0043] Based on the preferred embodiments of this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the claims.

Claims

1. An automatic vacuum circuit switching device, characterized in that, include: The tube (10) has several ventilation holes, which are connected to the air inlet on the vacuum platform (1). A lead screw (5) is inserted inside the tube (10). Bearings (4) are provided at both ends of the tube (10). The lead screw (5) is rotatably connected inside the tube (10) through the bearings (4) at both ends of the tube (10). A motor (2) is also provided at one end of the bearing (4). The motor (2) is driven by the lead screw (5) through a coupling (3). The tube body (10) is provided with a plurality of sealing components (6) screwed on the lead screw (5). The sealing components (6) can achieve the opening and closing of the ventilation hole by moving relative to the ventilation hole along the lead screw (5). The tube body (10) is also connected with a ventilator connector (7).

2. The automatic vacuum circuit switching device according to claim 1, characterized in that: The sealing assembly (6) includes a nut (12) screwed onto the lead screw (5), and a plurality of sealing rings (11) are fitted on the nut (12).

3. The automatic vacuum circuit switching device according to claim 2, characterized in that: The nut (12) is fitted with a number of spaced sealing rings (11), the distance between adjacent sealing rings (11) is greater than the diameter of the ventilation hole, and the adjacent sealing rings (11) are separated from the pipe wall of the pipe body (10) to form a sealing cavity.

4. The automatic vacuum circuit switching device according to claim 3, characterized in that: A magnetic ring (13) is fitted on the nut (12), and a magnetic photoelectric sensor (8) is also provided at the connection between the tube body (10) and the air pipe connector (7).

5. The automatic vacuum circuit switching device according to claim 4, characterized in that: The magnetic ring (13) is sleeved in the middle of the nut (12) and between the adjacent sealing rings (11).

6. The automatic vacuum circuit switching device according to claim 5, characterized in that: The vacuum platform (1) includes several ventilation pipes set on the platform. The ventilation pipes are provided with multiple vacuum suction holes, and the near air holes set on the ventilation pipes are connected to the air exchange holes on the pipe body (10).

7. The automatic vacuum circuit switching device according to claim 6, characterized in that: The external thread on the lead screw (5) is a thread with both forward and reverse rotation; the internal thread in the sealing assembly (6) is a thread with both forward and reverse rotation.

8. The automatic vacuum circuit switching device according to claim 7, characterized in that: The air inlet of the ventilation pipe of the vacuum platform (1) is connected to the air exchange hole on the pipe body (10). The air pipe hole on the pipe body (10) is connected to one end of the filter (101) through the air pipe connector (7). The other end of the filter (101) is connected to the air outlet of the solenoid valve (104) through the speed control valve (102). The air inlet of the solenoid valve (104) is connected to the vacuum airflow pipe (105) and the air pipe (106) respectively. A pressure gauge (103) is also connected to the passage of the filter (101) and the speed control valve (102).

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