Automatically adjustable vacuum sealing door device

Abstract

The present invention discloses an automatically adjustable vacuum sealing door device, comprising an outer door and an inner door arranged on a vacuum box, one side of the outer door is connected to the vacuum box through an outer door adjusting device, the other side of the outer door is connected to the vacuum box through a door lock, and the inner door is installed on the inner side of the outer door through an inner door adjusting device. The vacuum sealing door device disclosed by the present invention can realize automatic adjustment of the outer door and the inner door respectively through the outer door adjusting device and the inner door adjusting device, realize the sealing of the sealing door and the vacuum box, and when the vacuum pressure is broken, due to the existence of the inner door adjusting spring, the sealing door will not collide violently due to the sudden disappearance of pressure, and the safety is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum equipment, and in particular to an automatically adjustable vacuum sealing door device. Background Art

[0002] In recent years, with the rapid development of the global modern optoelectronic industry, vacuum coating machines, etching machines, and seam welding machines have also been rapidly promoted and popularized. The vacuum chamber is the necessary main structure of vacuum equipment. The vacuum chamber consists of a vacuum cavity with multiple walls and a door structure to form a sealed body. The door structure and the vacuum cavity are sealed by a sealing ring.

[0003] The door structure of the traditional vacuum chamber is directly connected and flipped by hinges, and the hinge stroke is not adjustable. When closing the door, the door cover with a sealing gasket is directly closed on the vacuum box opening. Since there is no automatic alignment function, it has very high requirements for design, manufacturing and installation. At the same time, for the heated vacuum box, when heated, the various parts of the vacuum door expand unevenly due to the heat, resulting in the box door and the box body cannot be pressed tightly together, which is prone to air leakage and cannot guarantee the conditions for the vacuum pump to start evacuating the vacuum chamber. There are also vacuum sealing doors with electric or pneumatic translation structures to achieve the opening and closing of the sealing door and the fit adjustment with the hatch, but this greatly increases the complexity of the device. Summary of the invention

[0004] To solve the above technical problems, the present invention provides an automatically adjustable vacuum sealing door device, which realizes automatic adjustment of the vacuum hatch sealing door through double adjustment of the inner and outer doors, thereby achieving sealing between the sealing door and the vacuum box.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] An automatically adjustable vacuum sealing door device comprises an outer door and an inner door arranged on a vacuum box, one side of the outer door is connected to the vacuum box through an outer door adjusting device, the other side of the outer door is connected to the vacuum box through a door lock, and the inner door is installed on the inner side of the outer door through the inner door adjusting device;

[0007] The outer door adjustment device comprises a hinge seat installed on the vacuum box body and an adjustment hinge installed on the outer door, the hinge seat and the adjustment hinge are connected by a hinge shaft, the hinge seat is provided with a long hole one at both upper and lower ends, the adjustment hinge is provided with a through hole in the longitudinal direction, the hinge shaft passes through the through hole, and both ends are located in the long hole one; the hinge seat is provided with a threaded hole one and a threaded hole two at the inner and outer sides of the hinge shaft, respectively, the threaded hole one located on the inner side is provided with an outer door adjustment bolt, and the front end of the outer door adjustment bolt is pressed against the hinge shaft; the threaded hole two located on the outer side is provided with an outer door adjustment spring and a fixing bolt, and the two ends of the outer door adjustment spring are pressed against the hinge shaft and the fixing bolt respectively;

[0008] The inner door adjustment device includes an adjustment base fixed on the upper and lower sides of the outer door, a threaded hole three is horizontally provided on the adjustment base, a long hole two is provided at the front end of the threaded hole three, and the inner door shaft is connected to the inner door after passing through the long hole two; a spring support slider, an inner door adjustment spring and an inner door adjustment bolt are installed in the threaded hole three, and the two ends of the inner door adjustment spring are respectively pressed against the spring support slider and the inner door adjustment bolt, and the spring support slider is in contact with the inner door shaft.

[0009] In the above solution, a bushing is installed between the inner door shaft and the inner door.

[0010] In the above solution, sealing silica gel is installed on the inner side of the inner door through a silica gel pressing plate.

[0011] In the above solution, a heat shield is installed on the silicone pressure plate through a support column.

[0012] In the above scheme, the outer door adjustment device includes two groups, which are respectively installed on the upper and lower parts of one side of the outer door.

[0013] In the above solution, the inner door adjustment device includes two groups, which are respectively installed on the upper side and the lower side of the outer door.

[0014] Through the above technical solution, the automatically adjustable vacuum sealing door device provided by the present invention has the following beneficial effects:

[0015] After closing the outer door with the handle, due to the action of the outer door adjustment spring in the outer door adjustment device, the outer door and the vacuum box hatch plane are basically parallel, and the inner door and the vacuum box hatch will have more than two points of contact; during the vacuum box extraction process, firstly, due to the action of the inner door adjustment spring in the inner door adjustment device, the sealing strip on the inner door will contact the vacuum box hatch plane, and as the pressure inside and outside the vacuum box increases, the silicone pad of the inner door will be completely attached to the vacuum box hatch plane by the external atmospheric pressure, thereby realizing the secondary automatic alignment of the inner door. When breaking the vacuum pressure of the vacuum box, due to the presence of the inner door adjustment spring in the inner door adjustment device, the sealing door will not collide violently due to the sudden loss of pressure, and the safety is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 The front of the vacuum box Figure 1 ;

[0018] Figure 2 The front of the vacuum box Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the back of the vacuum box;

[0020] Figure 4 A schematic diagram of an automatically adjustable vacuum sealing door device disclosed in an embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of an outer door adjustment device;

[0022] Figure 6 Hinge seat diagram Figure 1 ;

[0023] Figure 7 Hinge seat diagram Figure 2 ;

[0024] Figure 8 It is a schematic diagram of the outer door adjustment device after the hinge seat is removed;

[0025] Fig. 9 It is a schematic diagram of the inner door adjustment device;

[0026] Fig.10 Schematic diagram of adjusting the base;

[0027] Fig.11 This is a schematic diagram of the inner door adjustment device after removing the adjustment base.

[0028] In the figure, 1. vacuum box; 2. outer door; 3. inner door; 4. sealing silicone; 5. silicone pressure plate; 6. heat shield; 7. vacuum extraction device; 8. vacuum breaking device; 9. outer door adjustment device; 10. door lock; 11. handle; 12. inner door adjustment device; 13. support column; 14. bolt; 15. hinge seat; 16. adjustment hinge; 17. long bolt; 18. hinge axis; 19. long hole one; 20. outer door adjustment bolt; 21. outer door adjustment spring; 22. fixing bolt; 23. adjustment base; 24. long hole two; 25. inner door shaft; 26. bushing; 27. spring support slider; 28. inner door adjustment spring; 29. ​​inner door adjustment bolt; 30. hatch; 31. threaded hole one; 32. threaded hole two; 33. through hole; 34. threaded hole three. DETAILED DESCRIPTION

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

[0030] The present invention provides an automatically adjustable vacuum sealing door device, such as Figure 1 and Figure 2As shown, it includes an outer door 2 and an inner door 3 arranged on a vacuum box 1. One side of the outer door 2 is connected to the vacuum box 1 through an outer door adjustment device 9, and the other side of the outer door is connected to the vacuum box 1 through a door lock 10. The door lock 10 has a handle 11, and the outer door can be opened by the handle 11. The inner door 3 is installed on the inner side of the outer door 2 through the inner door adjustment device 12. Figure 3 As shown, the vacuum box 1 is provided with a vacuum pumping device 7 and a vacuum breaking device 8, which are used for vacuum pumping and vacuum breaking respectively.

[0031] like Figure 4 As shown, a sealing silica gel 4 is installed on the inner side of the inner door 3 through a silica gel pressing plate 5 and bolts 14. A heat shield 6 is installed on the silica gel pressing plate 5 through a support column 13, and the heat shield 6 can play a role in blocking heat.

[0032] like Figure 5 As shown, the outer door adjustment device 9 includes a hinge seat 15 installed on the vacuum box body 1 and an adjustment hinge 16 installed on the outer door 2. The hinge seat 15 is fixed to the vacuum box body 1 by a long bolt 17. The hinge seat 15 and the adjustment hinge 16 are connected by a hinge shaft 18. The upper and lower ends of the hinge seat 15 are provided with a long hole 19. The adjustment hinge 16 is provided with a through hole 33 in the longitudinal direction. The hinge shaft 18 passes through the through hole 33, and both ends are located in the long hole 19.

[0033] like Figure 6 and Figure 7 As shown, the hinge seat 15 is located at the inner and outer sides of the hinge shaft 18 and has a threaded hole 31 and a threaded hole 32 respectively. The outer door adjustment bolt 20 is installed in the inner threaded hole 31, and the front end of the outer door adjustment bolt 20 is against the hinge shaft 18; Figure 8 As shown, the outer door adjusting spring 21 and the fixing bolt 22 are installed in the threaded hole 22 located on the outside, and the two ends of the outer door adjusting spring 21 are respectively pressed against the hinge shaft 18 and the fixing bolt 22. By adjusting the screwing depth of the outer door adjusting bolt 20, the position of the hinge 16 shaft in the long hole can be adjusted. At the same time, the hinge shaft 18 can compress the outer door adjusting spring 21, and the outer door adjusting spring 21 can play a reset role, so that the hinge 16 seat 15 can be adjusted to make the outer door and the hatch of the vacuum box 1 perform the first position adjustment.

[0034] like Fig. 9 and Fig.10 As shown, the inner door adjustment device 12 includes an adjustment base 23 welded and fixed to the upper and lower sides of the outer door 2, a threaded hole 34 is horizontally provided on the adjustment base 23, and a long hole 24 is provided at the front end of the threaded hole 34. The inner door shaft 25 passes through the long hole 24 and then passes through the bushing 26 to be connected to the inner door 3; Fig.11As shown, a spring support slider 27, an inner door adjustment spring 28 and an inner door adjustment bolt 29 are installed in the threaded hole 3, and the two ends of the inner door adjustment spring 28 are respectively pressed against the spring support slider 27 and the inner door adjustment bolt 29, and the spring support slider 27 is in contact with the inner door shaft 25. The pre-compression amount of the inner door adjustment spring 28 can be changed by adjusting the screwing depth of the inner door adjustment bolt 29, and then the spring support slider 27 and the inner door shaft 25 can be pushed, thereby changing the distance between the inner door 3 and the outer door 2, and adjusting the degree of fit between the inner door 3 and the hatch 30 of the vacuum box 1. By rotating the bushing 26, the tightness of the inner door shaft 25 and the inner door 3 can be adjusted.

[0035] In this embodiment, the outer door regulating device 9 includes two groups, which are respectively installed at the upper part and the lower part of one side of the outer door 2. The inner door regulating device 12 also includes two groups, which are respectively installed at the upper side and the lower side of the outer door 2.

[0036] After the outer door 2 is closed by the handle 11, due to the force of the outer door adjustment spring 21 in the outer door adjustment device 9, the outer door 2 is basically parallel to the plane of the hatch 30 of the vacuum box 1, and the inner door will have more than two points of contact with the hatch 30 of the vacuum box 1; during the vacuum extraction process of the vacuum box 1, firstly, due to the action of the inner door adjustment spring 28 in the inner door adjustment device 12, the sealing silicone 4 on the inner door 3 will contact the plane of the hatch 30 of the vacuum box 1, and as the pressure inside and outside the vacuum box 1 increases, the sealing silicone 4 of the inner door 3 will be completely attached to the plane of the hatch 30 of the vacuum box 1 by the external atmospheric pressure, thereby realizing the secondary automatic alignment of the inner door 3. When the vacuum pressure of the vacuum box 1 is broken, due to the existence of the force of the inner door adjustment spring 28 in the inner door adjustment device 12, there will be no violent collision of the sealing door due to the sudden disappearance of pressure.

[0037] During the specific implementation, the following points should be noted during the adjustment process:

[0038] 1. A bushing 26 is installed between the inner door shaft 25 and the inner door 3, and the inner door 3 is fixed on the inner door shaft 25 by the bushing 26, while ensuring that the inner door shaft 25 can slide smoothly in the long hole 24.

[0039] 2. After the outer door 2 is closed for the first time, it is only necessary to adjust the outer door adjusting bolt 20 on the outer door adjusting device to make the outer door 2 and the hatch 30 of the vacuum box 1 substantially parallel and the inner door 3 contact with the hatch 30 of the vacuum box 1.

[0040] 3. After the sealing door is used for many times and the sealing silica gel 4 undergoes irreversible compression deformation, the fitting degree between the inner door 3 and the hatch 30 of the vacuum box 1 can be adjusted by adjusting the inner door adjusting bolt 29 to screw in.

[0041] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatically adjustable vacuum sealing door device, characterized in that: It comprises an outer door and an inner door arranged on the vacuum box, one side of the outer door is connected to the vacuum box through an outer door adjusting device, the other side of the outer door is connected to the vacuum box through a door lock, and the inner door is installed on the inner side of the outer door through the inner door adjusting device; The outer door adjustment device comprises a hinge seat installed on the vacuum box body and an adjustment hinge installed on the outer door, the hinge seat and the adjustment hinge are connected by a hinge shaft, the hinge seat is provided with a long hole one at both upper and lower ends, the adjustment hinge is provided with a through hole in the longitudinal direction, the hinge shaft passes through the through hole, and both ends are located in the long hole one; the hinge seat is provided with a threaded hole one and a threaded hole two at the inner and outer sides of the hinge shaft, respectively, the threaded hole one located on the inner side is provided with an outer door adjustment bolt, and the front end of the outer door adjustment bolt is pressed against the hinge shaft; the threaded hole two located on the outer side is provided with an outer door adjustment spring and a fixing bolt, and the two ends of the outer door adjustment spring are pressed against the hinge shaft and the fixing bolt respectively; The inner door adjustment device comprises an adjustment base fixed to the upper and lower sides of the outer door, a threaded hole three is horizontally provided on the adjustment base, a long hole two is provided at the front end of the threaded hole three, and the inner door shaft passes through the long hole two and is connected to the inner door; a spring support slider, an inner door adjustment spring and an inner door adjustment bolt are installed in the threaded hole three, two ends of the inner door adjustment spring are respectively pressed against the spring support slider and the inner door adjustment bolt, and the spring support slider is in contact with the inner door shaft; A bushing is installed between the inner door rotating shaft and the inner door; and sealing silica gel is installed on the inner side of the inner door through a silica gel pressing plate.

2. The automatically adjustable vacuum sealing door device according to claim 1, characterized in that: A heat shield is installed on the silica gel pressing plate through a supporting column.

3. The automatically adjustable vacuum sealing door device according to claim 1, characterized in that: The outer door regulating device comprises two groups, which are respectively installed at the upper part and the lower part of one side of the outer door.

4. The automatically adjustable vacuum sealing door device according to claim 1, characterized in that: The inner door regulating device comprises two groups, which are respectively installed on the upper side and the lower side of the outer door.

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