Automatic door opening device for vacuum furnace

Abstract

The utility model relates to the technical field of vacuum furnaces, and provides an automatic door opening device for a vacuum furnace, which comprises a vacuum furnace body, a furnace door arranged on the vacuum furnace body and a rotating mechanism arranged on the vacuum furnace body and used for driving the furnace door to rotate so as to be opened and closed, the rotating mechanism comprises a mounting arm fixedly connected to the furnace door, a driven gear fixedly connected to the mounting arm, a driving gear meshed with the driven gear and a motor for driving the driving gear to rotate, and a first mounting plate is arranged on the peripheral wall of the vacuum furnace body in a protruding mode; second mounting plates allowing the two ends of the mounting arm to be rotationally connected are perpendicularly arranged on the surfaces, close to the two ends of the first mounting plate, of the first mounting plate, the motor and the driving gear are arranged between the two second mounting plates, and a connecting assembly is arranged between the motor and the first mounting plate. And the motor is mounted on the first mounting plate through a connecting assembly. The vacuum furnace has the beneficial effect that the adaptability of the door opening mode of the vacuum furnace is improved.

Description

Technical Field

[0001] This application relates to the technical field of vacuum furnaces, and in particular to an automatic door opening device for a vacuum furnace. Background Art

[0002] The door opening method of vacuum furnaces has always been a research topic for vacuum furnace equipment. With the development of the times and the current increasing requirement for automatic loading and unloading inside the vacuum furnace, the furnace door needs to be automatically opened and closed. Therefore, the current automatic opening and closing methods mainly rely on the telescopic movements of cylinders, oil cylinders, etc.

[0003] However, for those completed by the telescopic movements of cylinders, oil cylinders, etc., they require the equipment to provide a gas source or a hydraulic source, with complex pipelines. Moreover, cylinders, oil cylinders, etc. need to be directly connected to the furnace door, occupying a large space. And during the telescopic movement process, a large movement space is also required for cylinders, oil cylinders, etc., which is not very suitable for some places with limited space. Therefore, further improvement is needed. Summary of the Utility Model

[0004] In order to improve the adaptability of the door opening method of the vacuum furnace, this application provides an automatic door opening device for a vacuum furnace.

[0005] An automatic door opening device for a vacuum furnace provided by this application adopts the following technical solutions:

[0006] An automatic door opening device for a vacuum furnace includes a vacuum furnace body, a furnace door provided on the vacuum furnace body, and a rotating mechanism provided on the vacuum furnace body for driving the furnace door to rotate for opening and closing. The rotating mechanism includes a mounting arm fixedly connected to the furnace door, a driven gear fixedly connected to the mounting arm, a driving gear meshing with the driven gear, and a motor for driving the driving gear to rotate. A first mounting plate protrudes from the outer peripheral wall of the vacuum furnace body. Second mounting plates for rotatably connecting both ends of the mounting arm are vertically provided on the surfaces of the first mounting plate near its two ends. The motor and the driving gear are arranged between the two second mounting plates. A connecting component is arranged between the motor and the first mounting plate. The motor is mounted on the first mounting plate through the connecting component. The driving gear is detachably connected to the motor. The distance between the driving gear and the upper first mounting plate is greater than the thickness of the driving gear.

[0007] By adopting the above technical solutions, when the motor is started, it drives the driving gear, the driven gear, and the mounting arm to rotate in sequence, thereby opening the furnace door. Compared with the prior art where oil cylinders or cylinders need to perform telescopic movements, the occupied space can be reduced by this automatic door opening method, so that it can be applicable to some places with relatively limited space, thereby improving the adaptability of the door opening method of the vacuum furnace. And it is also relatively neat visually and is easy to complete the opening of the furnace door in a limited space.

[0008] Among them, through the cooperation of the motor and the meshing between the driving gear and the driven gear, the furnace door rotates relatively evenly and stably. After a power outage, the furnace door can be manually opened or closed to handle emergency events. With use, the driving gear may be worn, and the driving gear can be disassembled from the motor for replacement.

[0009] Preferably, the mounting arm specifically includes a rotating arm fixedly connected to the furnace door and a fixed arm fixedly connected to the rotating arm. The axis of the fixed arm is parallel to the length direction of the first mounting plate. The opposite ends of the fixed arm are respectively rotatably connected to the second mounting plate. A rotating space for the driven gear to rotate is provided between the fixed arm and the rotating arm, and the driven gear is detachably connected to the fixed arm.

[0010] By adopting the above technical solution, by detachably connecting the driven gear to the fixed arm and detachably connecting the driving gear to the motor, driven gears and driving gears with different tooth numbers and sizes can be replaced according to needs to change the rotation speed of the furnace door, so as to adapt to the door opening methods of vacuum furnaces with different rotation speed requirements, thereby further improving the adaptability of the door opening method of this vacuum furnace.

[0011] Preferably, a flange is fixedly sleeved on the fixed arm. The flange is provided with bolts, and the bolts are threadedly connected to the driven gear. The driven gear abuts against the lower surface of the flange. The driven gear is an incomplete gear, and a notch is provided on the outer peripheral wall of the driven gear. The fixed arm is inserted into the notch.

[0012] By adopting the above technical solution, after aligning the notch provided on the driven gear with the fixed arm, inserting the fixed arm into the notch and abutting against the lower surface of the flange, then passing the bolts through the flange to fixedly connect with the driven gear, the driven gear is installed on the flange, and it is also convenient to disassemble and replace through the bolts.

[0013] Preferably, the driving gear is coaxially sleeved on the output shaft of the motor. A first limiting block protrudes from the outer peripheral wall of the output shaft of the motor. A limiting groove for the first limiting block to slide and insert is provided on the inner wall of the driving gear. The limiting groove extends to the lower surface of the driving gear. A first fixing plate is fixedly connected to the upper surface of the driving gear. Bolts are also passed through the first fixing plate, and the bolts are threadedly connected to the output shaft of the motor.

[0014] By adopting the above technical solution, after aligning the inner ring of the driving gear with the output shaft of the motor and sleeving it, and inserting the first limiting block into the limiting groove, then passing the bolts through the first fixing plate to threadedly connect with the output shaft of the motor to fixedly connect the driving gear to the output shaft of the motor. Through the bolts, it is also convenient to disassemble and replace the driving gear.

[0015] Preferably, the connecting component includes a second fixing plate fixed to the motor, an adjusting plate fixed to the second fixing plate and sliding along the width direction of the first mounting plate, an adjusting bolt passing through the adjusting plate, and a limiting member for restricting the sliding of the adjusting plate. The adjusting plate is provided with a through hole for the adjusting bolt to pass through, and the through hole is a strip-shaped hole. The length direction of the through hole is parallel to the width direction of the first mounting plate. The adjusting bolt is threadedly connected to the first mounting plate.

[0016] By adopting the above technical solution, for the furnace door that needs to meet different rotational speeds, it is necessary to replace the driving gear and the driven gear with different sizes. Since there is limited space between the fixed arm and the first mounting plate, and the axis of the driven gear remains unchanged, it may change the axes of the driving gear and the output shaft of the motor. Therefore, the adjusting plate is slid along the width direction of the first mounting plate to adjust the distance between the driving gear and the driven gear. After adjusting to a certain position, the adjusting bolt is tightened. Since the mechanical vibration generated during the operation of the motor may drive the adjusting plate to slide along the width direction of the first mounting plate, the limiting member is used to limit it, so as to ensure the meshing effect between the driving gear and the driven gear.

[0017] Preferably, the limiting member includes a second limiting block fixedly connected to the end of the adjusting plate, a third limiting block protruding from the first mounting plate, and a limiting bolt threadedly passing through the third limiting block. The limiting bolt is threadedly connected to the second limiting block.

[0018] By adopting the above technical solution, since the second limiting block is fixedly connected to the end of the adjusting block, by rotating the limiting bolt, the second limiting block can be pushed to slide along the width direction of the first mounting plate to adjust the distance between the driving gear and the driven gear, and the meshing between the driving gear and the driven gear can also be ensured.

[0019] Preferably, the limiting member further includes a limiting nut threadedly connected to the limiting bolt. There are two limiting nuts, and they are arranged between the second limiting block and the third limiting block.

[0020] By adopting the above technical solution, by providing the limiting nut, the possibility of the limiting bolt loosening is reduced.

[0021] Preferably, the third limiting block is detachably connected to the first mounting plate.

[0022] By adopting the above technical solution, after the third limiting block is disassembled, it is convenient to disassemble the driving motor, the connecting component and the driving gear for maintenance and replacement.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. Compared with the prior art in which the oil cylinder or the air cylinder needs to be extended and retracted, the automatic door opening method using the motor, the driving gear and the driven gear has a relatively shorter activity path and a smaller occupied space, so that it can be applied to places with relatively limited space, thereby improving the adaptability of the door opening method of the vacuum furnace.

[0025] 2. By detachably connecting the driven gear to the fixed arm and detachably connecting the driving gear to the motor, the driven gear and the driving gear with different numbers of teeth and sizes can be replaced according to needs to change the rotation speed of the furnace door, so as to adapt to the door opening method of the vacuum furnace with different rotation speed requirements, thereby further improving the adaptability of the door opening method of the vacuum furnace.

[0026] 3. Since the driven gear and the driving gear are detachable, the axis of the driving gear and the output shaft of the motor may be changed. In this regard, the adjustment plate is slid along the width direction of the first mounting plate to adjust the spacing between the driving gear and the driven gear. After adjusting to a certain position, tighten the adjustment bolt. Since the mechanical vibration caused by the operation of the motor may drive the adjustment plate to slide along the width direction of the first mounting plate, the limit piece is used to limit this, thereby ensuring the meshing effect between the driving gear and the driven gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0028] Figure 2 It is a structural schematic diagram of the switching mechanism in the embodiment of the present application;

[0029] Figure 3 is a schematic cross-sectional structure diagram of a switching mechanism in an embodiment of the present application;

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of the driving gear in the embodiment of the present application.

[0031] Explanation of the accompanying drawings: 1. vacuum furnace body; 11. first mounting plate; 12. second mounting plate; 121. sensor; 13. mounting slot; 14. plug-in block; 2. furnace door; 21. handle; 3. rotating mechanism; 4. mounting arm; 41. rotating arm; 42. fixed arm; 421. flange; 43. rotating space; 5. driven gear; 6. driving gear; 61. limiting slot; 62. first fixed plate; 7. motor; 71. first limiting block; 8. connecting assembly; 81. second fixed plate; 82. adjusting plate; 821. perforation; 83. connecting plate; 84. adjusting bolt; 85. limiting member; 851. second limiting block; 852. third limiting block; 853. limiting bolt; 854. limiting nut; 9. bolt. DETAILED DESCRIPTION

[0032] The following will further elaborate on this application in conjunction with the attached Figures 1-4 drawings.

[0033] An embodiment of this application discloses an automatic door opening device for a vacuum furnace.

[0034] Embodiment:

[0035] An automatic door opening device for a vacuum furnace, referring to Figure 1 , includes a vacuum furnace body 1, a furnace door 2 provided on the vacuum furnace body 1, and a rotating mechanism 3 provided on the vacuum furnace body 1 for driving the furnace door 2 to rotate for opening and closing. Among them, a handle 21 is provided on the furnace door 2.

[0036] Referring to Figure 2 and Figure 3 , in this embodiment, the rotating mechanism 3 specifically includes a mounting arm 4 fixedly connected to the furnace door 2, a driven gear 5 fixedly connected to the mounting arm 4, a driving gear 6 meshing with the driven gear 5, and a motor 7 for driving the driving gear 6 to rotate. Among them, a first mounting plate 11 protrudes from the outer peripheral wall of the vacuum furnace body 1. Second mounting plates 12 for the two ends of the mounting arm 4 to rotate and connect are provided on the surfaces of the first mounting plate 11 near its two ends. The length direction of the second mounting plate 12 is perpendicular to the length direction of the first mounting plate 11. The motor 7 and the driving gear 6 are arranged between the two second mounting plates 12. A connecting component 8 is provided between the motor 7 and the first mounting plate 11. The motor 7 is mounted on the first mounting plate 11 through the connecting component 8. The driving gear 6 is detachably connected to the motor 7. The distance between the driving gear 6 and the upper first mounting plate 11 is greater than the thickness of the driving gear 6.

[0037] It should be noted that the motor 7 can be a reduction motor or a servo motor. For the selection of the motor 7, it is specifically set according to requirements. In this embodiment, a reduction motor is specifically shown, and it can be further specifically a variable-frequency reduction motor. In this regard, for the opening and closing situation of the furnace door 2, an infrared sensor 121 or a ranging sensor 121, which is a sensor 121, is fixedly connected to the upper surface of the second mounting plate 12 below the motor 7. The sensor 121 is electrically connected to a central control platform (not shown in the figure) to transmit the corresponding data obtained by the sensor 121 to the central control platform for processing. The central control platform is electrically connected to a controller (not shown in the figure) for executing the instructions issued after processing the relevant data. The controller is electrically connected to the reduction motor to precisely control the rotation of the motor 7, that is, to control the opening and closing of the furnace door 2. And the reduction motor can be rotated by an external force after a power outage. Therefore, in the event of an emergency power outage, the furnace door 2 can be manually opened or closed to handle emergency events.

[0038] Among them, the installation arm 4 specifically includes a rotating arm 41 fixedly connected to the furnace door 2 and a fixed arm 42 fixedly connected to the rotating arm 41. The axis of the fixed arm 42 is parallel to the length direction of the first mounting plate 11. The opposite ends of the fixed arm 42 are respectively rotatably connected to the second mounting plate 12. A rotating space 43 for the driven gear 5 to rotate is provided between the fixed arm 42 and the rotating arm 41. The driven gear 5 is detachably connected to the fixed arm 42. Specifically, in this embodiment, the driven gear 5 is an incomplete gear, and a notch is provided on the outer peripheral wall of the driven gear 5. The fixed arm 42 is inserted into the notch. A flange 421 is fixedly sleeved on the fixed arm 42. A bolt 9 is passed through the flange 421, and the bolt 9 is threadedly connected to the driven gear 5. The driven gear 5 abuts against the lower surface of the flange 421.

[0039] Refer to Figure 3 、 Figure 4 , among which, the driving gear 6 is coaxially sleeved on the output shaft of the motor 7. A first limiting block 71 protrudes from the outer peripheral wall of the output shaft of the motor 7. A limiting groove 61 for the first limiting block 71 to slide and insert is provided on the inner wall of the driving gear 6. The limiting groove 61 extends to the lower surface of the driving gear 6. A first fixing plate 62 is fixedly connected to the upper surface of the driving gear 6. A bolt 9 is also passed through the first fixing plate 62, and the bolt 9 is threadedly connected to the output shaft of the motor 7 to mount the driving gear 6 on the output shaft of the motor 7.

[0040] Refer to Figure 2 、 Figure 3 , among which, for the installation of the motor 7, in this embodiment, the connecting component 8 specifically includes a second fixing plate 81 fixed to the motor 7, an adjusting plate 82 fixed to the second fixing plate 81 and sliding along the width direction of the first mounting plate 11, a connecting plate 83 connecting the second fixing plate 81 and the adjusting plate 82, an adjusting bolt 84 passed through the adjusting plate 82, and a limiting member 85 for restricting the sliding of the adjusting plate 82. In this embodiment, two connecting blocks are provided and are respectively arranged on both sides of the second fixing plate 81. Among them, the adjusting plate 82 is provided with a through hole 821 for the adjusting bolt 84 to pass through. The through hole 821 is a strip-shaped hole, and the length direction of the through hole 821 is parallel to the width direction of the first mounting plate 11. The adjusting bolt 84 is threadedly connected to the first mounting plate 11.

[0041] Among them, the limiting member 85 specifically includes two second limiting blocks 851 respectively fixedly connected to both ends of the adjusting plate 82, a third limiting block 852 protruding from the first mounting plate 11, a limiting bolt 853 threadedly passing through the third limiting block 852, and a limiting nut 854 threadedly connected to the limiting bolt 853. Among them, since there are two second limiting blocks 851, correspondingly, there are also two third limiting blocks 852 and limiting bolts 853, which are respectively arranged at both ends of the adjusting plate 82. There are two limiting nuts 854 arranged on one limiting bolt 853, and they are arranged between the second limiting block 851 and the third limiting block 852, and respectively abut against the mutually approaching surfaces of the second limiting block 851 and the third limiting block 852. The limiting bolt 853 is threadedly connected to the second limiting block 851.

[0042] In this embodiment, the third limiting block 852 is detachably connected to the first mounting plate 11. Specifically, the first mounting plate 11 is provided with a mounting groove 13, and the third limiting block 852 protrudes with an insertion block 14 slidably inserted into the mounting groove 13. The insertion block 14 is fixedly connected to the third limiting block 852. The length of the insertion block 14 is greater than the length of the third limiting block 852, and the insertion block 14 abuts against the adjusting plate 82. It should be noted that the depth of the mounting groove 13 can be greater than the sum of the widths between the insertion block 14 and the third limiting block 852, so that after the limiting bolt 853 is disassembled, the third limiting block 852 can be pushed back into the mounting groove 13, and then the adjusting plate 82 can be slid out of the first mounting plate 11 for maintenance. Since the length of the third limiting block 852 is less than the length of the insertion block 14, it is convenient to manually take it out for the limiting bolt 853 to pass through. Or an elastic member (not shown in the figure) is arranged in the mounting groove 13. Due to the elastic force of the elastic member itself, when the pressure applied to the third limiting block 852 is withdrawn, the insertion block 14 is pushed to protrude in a direction away from the mounting groove 13, so that the third limiting block 852 protrudes, which is specifically set according to requirements.

[0043] The implementation principle of an automatic door opening device for a vacuum furnace in an embodiment of the present application is as follows: Start the motor 7, which drives the driving gear 6, the driven gear 5, and the mounting arm 4 to rotate in sequence, so as to open the furnace door 2. Through this automatic door opening method, compared with the prior art where an oil cylinder or a cylinder needs to expand and contract, the occupied space can also be reduced, so that it can be applied to some places with relatively limited space, thereby improving the adaptability of the door opening method of the vacuum furnace. And it is also relatively neat visually and is easy to complete the opening of the furnace door 2 in a limited space.

[0044] Among them, due to the meshing between the motor 7 and the driving gear 6 and the driven gear 5, the rotation of the furnace door 2 is relatively uniform and stable. And after a power outage, the motor 7 can rotate under the action of an external force, so that the furnace door 2 can be manually opened or closed to handle emergency events.

[0045] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An automatic door opening device for a vacuum furnace, characterized in that: The invention comprises a vacuum furnace body (1), a furnace door (2) arranged on the vacuum furnace body (1), and a rotating mechanism (3) arranged on the vacuum furnace body (1) for driving the furnace door (2) to rotate for opening and closing, the rotating mechanism (3) comprising a mounting arm (4) fixedly connected to the furnace door (2), a driven gear (5) fixedly connected to the mounting arm (4), a driving gear (6) meshed with the driven gear (5), and a motor (7) for driving the driving gear (6) to rotate, and a first mounting plate (11) is protruding from the outer peripheral wall of the vacuum furnace body (1), and the first mounting plate (11) is vertically provided with a second mounting plate (12) for rotationally connecting the two ends of the mounting arm (4), the motor (7) and the driving gear (6) are arranged between the two second mounting plates (12), a connecting component (8) is arranged between the motor (7) and the first mounting plate (11), the motor (7) is mounted on the first mounting plate (11) through the connecting component (8), the driving gear (6) is detachably connected to the motor (7), and the distance between the driving gear (6) and the first mounting plate (11) above is greater than the thickness of the driving gear (6).

2. The automatic door opening device for a vacuum furnace according to claim 1, characterized in that: The mounting arm (4) specifically comprises a rotating arm (41) fixedly connected to the furnace door (2) and a fixed arm (42) fixedly connected to the rotating arm (41); the axis of the fixed arm (42) is parallel to the length direction of the first mounting plate (11); opposite ends of the fixed arm (42) are respectively rotatably connected to the second mounting plate (12); a rotating space (43) for the driven gear (5) to rotate is provided between the fixed arm (42) and the rotating arm (41); and the driven gear (5) is detachably connected to the fixed arm (42).

3. The automatic door opening device for a vacuum furnace according to claim 2, characterized in that: The fixing arm (42) is fixedly sleeved with a flange (421), the flange (421) is penetrated by a bolt (9), the bolt (9) is threadedly connected to the driven gear (5), the driven gear (5) abuts against the lower surface of the flange (421), the driven gear (5) is an incomplete gear, the outer peripheral wall of the driven gear (5) is provided with a notch, and the fixing arm (42) is inserted into the notch.

4. The automatic door opening device for a vacuum furnace according to claim 2, characterized in that: The driving gear (6) is coaxially sleeved on the output shaft of the motor (7); a first limit block (71) is protruding from the outer peripheral wall of the output shaft of the motor (7); a limit groove (61) is provided on the inner wall of the driving gear (6) for the first limit block (71) to be slidably inserted; the limit groove (61) extends to the lower surface of the driving gear (6); a first fixing plate (62) is fixedly connected to the upper surface of the driving gear (6); a bolt (9) is also passed through the first fixing plate (62); the bolt (9) is threadedly connected to the output shaft of the motor (7).

5. The automatic door opening device for a vacuum furnace according to claim 2, characterized in that: The connecting assembly (8) comprises a second fixing plate (81) fixed to the motor (7), an adjusting plate (82) fixed to the second fixing plate (81) and sliding along the width direction of the first mounting plate (11), an adjusting bolt (84) passing through the adjusting plate (82), and a limiting member (85) for limiting the sliding of the adjusting plate (82); the adjusting plate (82) is provided with a through hole (821) for the adjusting bolt (84) to pass through; the through hole (821) is a strip-shaped hole; the length direction of the through hole (821) is parallel to the width direction of the first mounting plate (11); and the adjusting bolt (84) is threadedly connected to the first mounting plate (11).

6. The automatic door opening device for a vacuum furnace according to claim 5, characterized in that: The limiting member (85) comprises a second limiting block (851) fixedly connected to the end of the adjusting plate (82), a third limiting block (852) protruding from the first mounting plate (11), and a limiting bolt (853) threadedly penetrated through the third limiting block (852), wherein the limiting bolt (853) is threadedly connected to the second limiting block (851).

7. The automatic door opening device for a vacuum furnace according to claim 6, characterized in that: The limiting member (85) further comprises a limiting nut (854) threadedly connected to the limiting bolt (853), and two limiting nuts (854) are provided and are arranged between the second limiting block (851) and the third limiting block (852).

8. The automatic door opening device for a vacuum furnace according to claim 6, characterized in that: The third limiting block (852) is detachably connected to the first mounting plate (11).

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