Automatic door device for OHT crown block to pass through

Abstract

The automatic door device comprises an OHT system rail, the OHT crown block, a door frame fixing mechanism and a door plate moving mechanism, the door frame fixing mechanism comprises a door frame, a linear guide rail and a driving mechanism, the door frame is fixed to a door opening where the crown block penetrates, the linear guide rail and the driving mechanism are both arranged on the door frame, and the door plate moving mechanism is arranged on the door frame. The door plank movement mechanism comprises a door plank and a baffle, the door plank is arranged on the linear guide rail and can move horizontally in the direction close to or away from the door opening along the linear guide rail under the action of the driving mechanism, and the baffle is installed on the door plank to form a whole with the door plank. The OHT system track is provided with an interruption gap used for allowing the door plate and the baffle to be inserted therein. The linear guide rail is obliquely arranged on the door frame and forms a certain angle with the door opening, the baffle is parallel to the linear guide rail, and the door plate is parallel to the door opening. Reliable sealing between the door plate and the door frame can be ensured, and the smoke-proof and fire-proof functions are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor handling and processing equipment, and in particular to an automatic door device for an OHT overhead crane to pass through. Background Art

[0002] In semiconductor factories, the OHT system is used to transport and transfer wafer boxes. The tracks of the OHT system usually need to pass through the partition walls of different workshops, which involves the use of automatic doors on the partition walls, which can not only enable the passage of the overhead crane, but also effectively separate different areas when the OHT overhead crane does not pass through. Since the OHT track needs to pass through the wall continuously, the track needs to be continuous to ensure the smooth operation of the OHT overhead crane. However, the existing automatic door system needs to avoid the track area, so it cannot be completely sealed when the door panel is closed, resulting in a lack of sufficient airtightness and an inability to achieve effective smoke and fire prevention functions, resulting in an inability to effectively prevent the spread of flames and smoke when a fire occurs. Summary of the invention

[0003] Technical purpose: In view of the shortcomings of existing automatic doors, the present invention discloses an automatic door device for the passage of OHT overhead cranes. By optimizing the structural design of door panels, door frames and tracks, a reliable seal is ensured when the OHT overhead crane is not passing through, and the device has good fire and smoke prevention properties.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: An automatic door device for an OHT overhead crane to pass through, comprising an OHT system track, an OHT overhead crane, a door frame fixing mechanism, and a door panel movement mechanism, wherein the door frame fixing mechanism comprises a door frame, a linear guide rail, and a driving mechanism, wherein the door frame is fixed to a door opening through which the overhead crane passes, wherein the linear guide rail and the driving mechanism are both arranged on the door frame, and are used to control the movement of the door panel movement mechanism, wherein the door panel movement mechanism comprises a door panel and a baffle plate, wherein the door panel is arranged on the linear guide rail, and can move translationally along the linear guide rail toward or away from the door opening under the action of the driving mechanism, wherein the baffle plate is installed on the door panel and forms a whole with the door panel, and wherein the OHT system track is provided with an interruption gap for inserting the door panel and the baffle plate; The linear guide rail is tiltedly arranged on the door frame to form a certain angle with the door opening, the baffle is arranged parallel to the linear guide rail, and the door panel is arranged parallel to the door opening.

[0005] Preferably, the door frame is provided with an opening for the OHT overhead travelling vehicle to pass through on one side of the door opening, and the side away from the door opening is a closed surface.

[0006] Preferably, it further comprises an automatic control unit, which is connected to the driving mechanism and is used to sense the position of the OHT overhead crane and control the opening and closing of the door panel.

[0007] Preferably, the driving mechanism comprises a driving screw, which is connected to the door panel and drives the door panel to move along the linear guide rail.

[0008] Preferably, a sealing rubber strip is provided in the contact area between the door frame and the door panel to form a smoke-proof and fire-proof sealing structure.

[0009] Preferably, the door frame fixing mechanism and the door panel movement mechanism are made of fire-resistant materials.

[0010] Beneficial effects: The automatic door device for OHT overhead crane passage provided by the present invention has the following beneficial effects: The present invention provides an interrupted gap on the OHT system track so that the door panel can be smoothly inserted into the interrupted gap of the OHT system track during translational movement. Because the gap is very small, it will hardly affect the normal passage of the OHT overhead crane, and can form a reliable seal when the OHT overhead crane does not pass through. A sealing rubber strip is provided in the contact area between the door panel and the door frame, which can form an effective seal when the door panel is closed to prevent flames and smoke from penetrating from the door gap, thereby effectively improving the fire and smoke prevention performance of the OHT system.

[0011] The present invention provides a linear guide rail and forms a certain angle between the linear guide rail and the door frame to ensure that the door panel will not rub against the door frame during translation, which not only reduces mechanical wear and extends the service life, but also ensures the stability and reliability of the door panel movement.

[0012] The present invention combines an automatic control unit with a driving mechanism. When an OHT overhead crane approaches, the door panel can be automatically opened, and automatically closed after the overhead crane passes, thereby improving the convenience of the device, reducing manual intervention, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a connection structure diagram of the guide rail, door frame fixing mechanism and door panel movement mechanism of the OHT system of the present invention; Figure 3 It is a schematic diagram of the structure of the guide rail of the OHT system of the present invention; Figure 4 A top view of the track and baffle positions of the OHT system of the present invention; Figure 5 It is a schematic diagram of the connection structure of the door frame fixing mechanism and the door panel movement mechanism of the present invention; Figure 6It is a top view of the connection structure between the linear guide rail and the door panel and the baffle plate of the present invention.

[0015] In the figure: 1, OHT system track; 101, interruption gap; 2, OHT overhead crane; 3, door frame fixing mechanism; 4, door panel movement mechanism; 5, automatic control unit; 6, door frame; 7, linear guide rail; 8, baffle; 9, door panel; 10 driving mechanism. DETAILED DESCRIPTION

[0016] The present invention will be described more clearly and completely below by way of a preferred embodiment in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiment.

[0017] like Figure 1 and Figure 2 As shown, the present invention provides an automatic door device for an OHT overhead crane to pass through, comprising an OHT system track 1, an OHT overhead crane 2, a door frame fixing mechanism 3, and a door panel movement mechanism 4. The door frame fixing mechanism 3 comprises a door frame 6, a linear guide rail 7, and a driving mechanism 10. The door frame 6 is fixed to a door opening of a partition wall through which the overhead crane passes. The linear guide rail 7 and the driving mechanism 10 are both arranged on the door frame 6 to control the movement of the door panel movement mechanism 4. The door panel movement mechanism 4 comprises a door panel 9 and a baffle 8. The top of the door panel 9 is suspended on the linear guide rail 7 and can translate along the linear guide rail 7 toward or away from the door opening under the action of the driving mechanism 10. The baffle 8 is installed on the door panel 9 to form a whole with the door panel 9, as shown in FIG. Figure 3 and Figure 4 As shown, the OHT system track 1 is provided with an interruption gap 101 for inserting the door panel 9 and the baffle 8. When the automatic door is closed, the baffle can be inserted into the interruption gap 101 of the OHT system track 1 to achieve complete sealing.

[0018] like Figure 6 As shown, the linear guide rail 7 is tilted on the door frame 6 to form a certain angle with the door opening to reduce the friction between the door panel and the door frame when moving. The baffle 8 is arranged parallel to the linear guide rail 7, and the door panel 9 is arranged parallel to the door opening.

[0019] like Figure 5 As shown, the door frame 6 is provided with an opening for the overhead crane 2 to pass through on one side of the door opening, and the side away from the door opening is a closed surface. Such a structural design allows the OHT overhead crane to pass smoothly when the door panel 9 is open, and forms a sealed structure when the door panel is closed.

[0020] The automatic door device provided by the present invention also includes an automatic control unit 5, which is connected to the driving mechanism 10 and is used to sense the position of the overhead crane 2 and control the opening and closing of the door panel 9. When the OHT overhead crane approaches, the automatic control unit instructs the drive to open the door panel. When the overhead crane passes, the door panel automatically closes to restore the sealing of the track area.

[0021] The driving mechanism 10 includes a driving screw connected to the bottom of the door panel 9, and drives the door panel 9 to move along the linear guide rail through mechanical transmission to achieve rapid opening and closing of the automatic door.

[0022] A sealing rubber strip is provided in the contact area between the door frame 6 and the door panel 9 to fill the gap on the contact surface, and the sealing rubber strip is replaced with a fireproof expansion strip, thereby forming a complete and reliable sealing surface around the door opening, realizing the smoke and fire prevention functions of the entire structure.

[0023] The mechanism and body of the automatic door device of the present invention are composed of fire-resistant materials, and adopt high-temperature resistant stainless steel, which can maintain structural integrity in fire and provide additional safety protection for various areas.

[0024] The working principle of the present invention is as follows: when the OHT overhead crane 2 does not pass, the automatic door is in a closed state, at which time the baffle 8 on the door panel 9 is inserted into the interrupted gap 101 of the OHT system track along the linear guide rail 7, and the door panel 9 and the door frame 6 form a complete sealing structure through the sealing rubber strip, which can effectively prevent the flame and smoke from spreading through the track, and the automatic control unit 5 detects the position of the overhead crane through the sensor to maintain the closed state of the door panel 9; When the OHT crane 2 approaches the automatic door, the sensor senses the position of the crane and transmits the signal to the automatic control unit, the automatic control unit 5 sends a signal to the drive mechanism 10, the drive mechanism 10 starts, the door panel 9 moves along the linear guide rail 7 in a direction away from the door opening, the baffle 8 withdraws from the interruption gap 101, and the automatic door opens, allowing the OHT crane to pass through the automatic door smoothly from the OHT system track 1; When the OHT overhead crane 2 passes through the automatic door, the sensor detects that the OHT overhead crane 2 has left, and the automatic control unit 5 sends a signal to the drive mechanism 10, which starts again, controls the door panel 9 to move along the linear guide rail 7 toward the door opening, and the baffle 8 is inserted into the interrupted gap 101. The door panel 9 reaches the closed position, and the automatic door is closed to form a sealing structure. At this time, the door panel 9 and the door frame 6 achieve fire and smoke prevention effects through the sealing rubber strip to ensure the safety of each area.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic door device for an OHT overhead crane to pass through, characterized in that: The invention comprises an OHT system track (1), an OHT overhead crane (2), a door frame fixing mechanism (3) and a door panel movement mechanism (4); the door frame fixing mechanism (3) comprises a door frame (6), a linear guide rail (7) and a driving mechanism (10); the door frame (6) is fixed to a door opening through which the overhead crane passes; the linear guide rail (7) and the driving mechanism (10) are both arranged on the door frame (6) and are used to control the movement of the door panel movement mechanism (4); the door panel movement mechanism (4) comprises a door panel (9) and a baffle plate (8); the door panel (9) is arranged on the linear guide rail (7) and can move translationally along the linear guide rail (7) in a direction close to or away from the door opening under the action of the driving mechanism (10); the baffle plate (8) is installed on the door panel (9) and forms a whole with the door panel (9); the OHT system track (1) is provided with an interruption gap (101) for inserting the door panel (9) and the baffle plate (8); The linear guide rail (7) is arranged on the door frame (6) at an angle to form a certain angle with the door opening; the baffle plate (8) is arranged parallel to the linear guide rail (7); and the door panel (9) is arranged parallel to the door opening.

2. The automatic door device for OHT overhead crane passage according to claim 1, characterized in that: The door frame (6) is provided with an opening for the overhead travelling vehicle (2) to pass through on one side of the door opening, and the side away from the door opening is a closed surface.

3. The automatic door device for OHT overhead crane passage according to claim 1, characterized in that: It also includes an automatic control unit (5), which is connected to the driving mechanism (10) and is used to sense the position of the overhead travelling vehicle (2) and control the opening and closing of the door panel (9).

4. The automatic door device for OHT overhead travelling vehicle according to claim 1, characterized in that: The driving mechanism (10) comprises a driving screw, which is connected to the door panel (9) and drives the door panel (9) to move along the linear guide rail.

5. The automatic door device for OHT overhead crane passage according to claim 1, characterized in that: A sealing rubber strip is provided in the contact area between the door frame (6) and the door panel (9) to form a smoke-proof and fire-proof sealing structure.

6. The automatic door device for OHT overhead crane passage according to claim 1, characterized in that: The door frame fixing mechanism (3) and the door panel moving mechanism (4) are made of fire-resistant materials.

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