Gravity sensing type material detection device for vacuum furnace

Abstract

The utility model relates to a gravity sensing type material detection device for a vacuum furnace. The gravity sensing type material detection device comprises a lifting driving mechanism and a detection mechanism which are arranged on a furnace barrel, the lifting driving mechanism comprises a flange plate sleeve and a lifting assembly which are fixedly connected with the furnace barrel; the detection mechanism comprises a connecting plate connected with the lifting assembly, a telescopic assembly arranged on the connecting plate, a flange rod connected with the telescopic assembly, an abutting assembly used for abutting against the material disc so as to detect whether the material disc exists or not and a proximity switch used for detecting the position of the connecting plate, and the proximity switch is connected with the flange rod. The abutting assembly is arranged at the end, away from the telescopic assembly, of the flange rod, and when the abutting assembly is located at the highest point, the abutting assembly is higher than the upper surface of the material supporting rod; the flange rod penetrates through the flange plate sleeve and is covered with a sealing assembly, one end of the sealing assembly is connected with the flange plate sleeve, and the other end of the sealing assembly is connected with the flange end of the flange rod. The device has the effects of accurate and stable material detection and long service life.

Description

Technical Field

[0001] The present application relates to the field of vacuum furnace technology, and in particular to a gravity-sensing material detection device used in a vacuum furnace. Background Art

[0002] The vacuum furnace includes a furnace barrel, a reflective screen assembly, a material support rod fixed on the furnace barrel, a material tray and a material fork. When loading, the furnace door is first opened, and the material tray with the material is placed on the material support rod by the material fork to complete the loading. When there is no material in the vacuum furnace and the furnace door is not opened, the material tray is not placed on the material support rod. The existing material detection technology for magnetic material vacuum furnaces mainly includes two implementation methods: the first is to use a photoelectric sensor for direct detection, which usually consists of a laser transmitter and receiver, circuit, etc. After the laser is emitted, it is irradiated on the material. The receiver receives it based on the principle of opposite radiation or reflection, and changes the circuit state to identify whether there is material. The second is to use an indirect detection method, using a linkage to connect the material in the furnace with the outside of the furnace, and using a sensor to measure the displacement of the linkage to determine whether there is material in the furnace.

[0003] However, the first method has two major drawbacks: 1. The observation glass is easily contaminated, preventing the laser from penetrating; 2. If the material is not densely packed, it may not be detected. The second method is more reliable, but it also carries the risk of leakage caused by contamination of the linkage seal. In addition, the linkage can be damaged by the feeding fork.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the existing process of detecting whether there is material in a vacuum furnace has problems such as inaccurate detection and easy leakage and damage of linkage parts, thereby reducing the accuracy and stability of the material detection process. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a gravity-sensing material detection device for use in a vacuum furnace.

[0006] The present application provides a gravity-sensing material detection device for a vacuum furnace, which adopts the following technical solution:

[0007] A gravity induction type material detection device used in a vacuum furnace, comprising a lifting drive mechanism and a detection mechanism arranged on the furnace barrel; the lifting drive mechanism includes a flange plate sleeve fixedly connected to the furnace barrel and a lifting component, and the detection mechanism includes a connecting plate connected to the lifting component, a telescopic component arranged on the connecting plate, a flange rod connected to the telescopic component, a butting component for butting against the material tray to detect whether the material tray exists, and a proximity switch for detecting the position of the connecting plate, the proximity switch is connected to the flange rod, the butting component is arranged at one end of the flange rod away from the telescopic component, and when the butting component is at the highest point, the height of the butting component is higher than the upper surface height of the material supporting rod; the flange rod passes through the flange plate sleeve, and a sealing component is sleeved outside the flange rod, one end of the sealing component is connected to the flange plate sleeve, and the other end is connected to the flange end of the flange rod.

[0008] By adopting the above technical solution, when there is no material in the vacuum furnace and the furnace door is closed, the lifting component drives the butting component to be in the highest position, and the height of the butting component exceeds the upper surface of the material supporting rod. At this time, the connecting plate is located below the proximity switch. When the furnace door is opened to feed materials into the vacuum furnace, the lifting component drives the butting component to be in the lowest position, thus effectively reducing the phenomenon that the material fork damages the butting component. At this time, the connecting plate is located below the proximity switch. After the feeding is completed and the furnace door is closed, the lifting component drives the connecting plate to rise. During the rising process, the butting component abuts against the material tray and stops moving. At the same time, the position of the flange rod is fixed, but the lifting component still has a rising space, so that the lifting component drives the connecting plate to squeeze the telescopic component, and further makes the connecting plate move towards the direction close to the flange rod. After the connecting plate rises, it is directly opposite to the probe of the proximity switch, thus completing the detection of the material.

[0009] Preferably, the lifting component includes a cylinder and a cylinder fixing seat fixedly connected to the flange plate sleeve. The cylinder is arranged on the cylinder fixing seat, and the telescopic end of the cylinder is connected to the connecting plate.

[0010] By adopting the above technical solution, the cylinder drives the connecting plate to rise and fall, thus realizing the material detection.

[0011] Preferably, a limiting block is arranged on the cylinder fixing seat, a guiding hole is opened on the limiting block, a guiding rod is arranged on the connecting plate, and the guiding rod passes through the guiding hole and is slidably connected to the limiting block.

[0012] By adopting the above technical solution, the arrangement of the limiting block and the guiding rod improves the stability of the connecting plate during the lifting process, thus improving the stability of the material detection process.

[0013] Preferably, an L-shaped mounting plate is connected to the flange end of the flange rod, and the proximity switch is arranged on the L-shaped mounting plate. When the telescopic assembly is in a compressed state, the probe of the proximity switch faces the connecting plate.

[0014] By adopting the above technical solution, when the abutting assembly abuts against the tray, the lifting assembly drives the connecting plate to squeeze the telescopic assembly, so that the connecting plate rises, and thus the material detection is realized.

[0015] Preferably, the telescopic assembly includes a fixed tube arranged on the connecting plate and a compression spring sleeved outside the flange rod. The fixed tube is sleeved outside the compression spring. One end of the compression spring is connected to the connecting plate, and the other end is connected to the flange end of the flange rod.

[0016] By adopting the above technical solution, when the positions of the abutting assembly and the flange rod are fixed, the lifting assembly drives the connecting plate to move towards the flange rod, so that the compression spring is squeezed and contracts, and the distance between the connecting plate and the flange end of the flange rod decreases, and thus the connecting plate faces the probe of the proximity switch.

[0017] Preferably, the abutting assembly includes a molybdenum rod connected to one end of the flange rod away from the telescopic assembly and a top cap arranged at the end of the molybdenum rod away from the flange rod. The top cap is used to abut against the tray.

[0018] By adopting the above technical solution, the molybdenum rod drives the top cap to abut against the tray, so as to realize the material detection.

[0019] Preferably, the sealing assembly includes a welded corrugated steel pipe, a first connecting flange and a second connecting flange respectively arranged at both ends of the welded corrugated steel pipe. The first connecting flange is connected to the flange plate sleeve, and the second connecting flange is connected to the flange end of the flange rod.

[0020] By adopting the above technical solution, the welded corrugated steel pipe realizes large-stroke dynamic sealing, with reliable sealing, space saving, large deformation amount and good anti-pollution ability.

[0021] Preferably, a solenoid valve for controlling the telescopic movement of the cylinder is arranged on the flange plate sleeve, and the solenoid valve is electrically connected to the cylinder.

[0022] By adopting the above technical solution, the solenoid valve is used to control the telescopic movement of the cylinder, so that the automation degree of the material detection process is high.

[0023] In summary, the present application has the following beneficial technical effects:

[0024] 1. Utilize the gravity of the material to compress the compression spring, so that the connecting plate approaches the proximity switch, realizing accurate detection of the material, with stable structure and strong anti-interference ability;

[0025] 2. The cylinder drives the molybdenum rod to extend and retract, effectively reducing the phenomenon of the material fork hitting the molybdenum rod and extending the service life of the molybdenum rod;

[0026] 3. Sealing is achieved by welding corrugated steel pipes, which has the advantages of reliable sealing, space saving, large deformation and strong anti-interference ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic structural diagram of a gravity-sensing material detection device for a vacuum furnace provided in an embodiment of the present application;

[0028] Figure 2 This is a partial structural diagram of a gravity-sensing material detection device for a vacuum furnace provided in an embodiment of the present application;

[0029] Figure 3 It is a partial cross-sectional structural diagram of the connecting plate, telescopic assembly, flange rod, proximity switch and L-shaped mounting plate.

[0030] Explanation of the accompanying drawings: 1. Lifting drive mechanism; 11. Flange plate sleeve; 12. Lifting assembly; 121. Cylinder; 122. Cylinder fixing seat; 123. Solenoid valve; 124. Limit block; 1241. Guide hole; 125. Guide rod; 2. Detection mechanism; 21. Connecting plate; 22. Telescopic assembly; 221. Fixed tube; 222. Compression spring; 23. Flange rod; 24. Abutment assembly; 241. Molybdenum rod; 242. Top cap; 25. Proximity switch; 251. L-shaped mounting plate; 3. Sealing assembly; 31. Welded corrugated steel pipe; 32. First connecting flange; 33. Second connecting flange. DETAILED DESCRIPTION

[0031] The following is combined with Figures 1 - 3 This application is described in further detail.

[0032] The embodiment of the present application discloses a gravity-sensing material detection device for use in a vacuum furnace.

[0033] Reference Figure 1 、 Figure 2 and Figure 3 A gravity-sensing material detection device for a vacuum furnace includes a lifting drive mechanism 1 and a detection mechanism 2 arranged on a furnace drum.

[0034] The lifting drive mechanism 1 comprises a flange sleeve 11 fixedly connected to the furnace drum and a lifting assembly 12. The lifting assembly 12 comprises a cylinder 121 and a cylinder mounting base 122. The cylinder mounting base 122 is fixedly connected to the flange sleeve 11, and the cylinder 121 is fixedly mounted on the cylinder mounting base 122. A solenoid valve 123 is provided on the flange sleeve 11 to control the extension and retraction of the cylinder 121. The solenoid valve 123 is electrically connected to the cylinder 121.

[0035] The detection mechanism 2 includes a connecting plate 21 fixedly connected to the telescopic end of the air cylinder 121, a telescopic assembly 22 arranged on the connecting plate 21, a flange rod 23 connected to the telescopic assembly 22, a contact assembly 24 for contacting the tray to detect the presence of the tray, and a proximity switch 25 for detecting the position of the connecting plate 21.

[0036] A limit block 124 is fixedly arranged on the air cylinder fixed seat 122. A guide hole 1241 is formed in the limit block 124. A guide rod 125 is arranged on the connecting plate 21. The guide rod 125 passes through the guide hole 1241 and is slidably connected to the limit block 124.

[0037] In the embodiment of the present application, the number of the limit blocks 124 and the guide rods 125 is two. The two limit blocks 124 are respectively arranged on the opposite sides of the air cylinder fixed seat 122, and the two guide rods 125 are respectively arranged on both sides of the connecting plate 21.

[0038] An L-shaped mounting plate 251 is fixedly connected to the flange end of the flange rod 23. The proximity switch 25 is arranged on the L-shaped mounting plate 251. When the telescopic assembly 22 is in a compressed state, the probe of the proximity switch 25 faces the connecting plate 21.

[0039] The telescopic assembly 22 is connected to the flange end of the flange rod 23. The telescopic assembly 22 includes a fixed pipe 221 fixedly arranged on the connecting plate 21 and a compression spring 222 sleeved outside the flange rod 23. One end of the compression spring 222 is fixedly connected to the connecting plate 21, and the other end is fixedly connected to the flange end of the flange rod 23. The flange rod 23 passes through the connecting plate 21 and is slidably connected to the connecting plate 21.

[0040] The contact assembly 24 is arranged at one end of the flange rod 23 away from the telescopic assembly 22. The contact assembly 24 includes a molybdenum rod 241 connected to one end of the flange rod 23 away from the telescopic assembly 22 and a top cap 242 arranged at one end of the molybdenum rod 241 away from the flange rod 23. The top cap 242 is used for contacting the tray. When the top cap 242 is at the highest point, the height of the top cap 242 is 20 mm higher than the upper surface of the tray supporting rod.

[0041] The flange rod 23 passes through the flange plate sleeve 11. A sealing assembly 3 is sleeved outside the flange rod 23. One end of the sealing assembly 3 is connected to the flange plate sleeve 11, and the other end is connected to the flange end of the flange rod 23.

[0042] The sealing assembly 3 includes a welded corrugated steel pipe 31, a first connecting flange 32 and a second connecting flange 33 respectively arranged at both ends of the welded corrugated steel pipe 31. The first connecting flange 32 is fixedly connected to the flange plate sleeve 11, and the second connecting flange 33 is fixedly connected to the flange end of the flange rod 23.

[0043] The implementation principle of a gravity-sensing material detection device for a vacuum furnace according to an embodiment of the present application is as follows: When there is no material in the vacuum furnace and the furnace door is closed, the cylinder 121 is controlled by the solenoid valve 123 to be at its minimum stroke position, the top cap 242 is at its highest position, and the height of the top cap 242 exceeds the upper surface of the material support rod by 20 mm. At this time, the length of the compression spring 222 is close to its original length, and the connecting plate 21 is located below the proximity switch 25. When the vacuum furnace is opened to feed material, the cylinder 121 is at its maximum stroke position, and the top cap 242 is at its lowest position, effectively reducing the possibility of the material fork striking the molybdenum rod 241. At this time, the length of the compression spring 222 is close to its original length, and the connecting plate 21 is located below the proximity switch 25. After the feeding is completed and the furnace door is closed, the cylinder 121 drives the connecting plate 21 to rise, and the top cap 242 abuts against the material tray during the rising process and stops moving. At the same time, the position of the flange rod 23 is fixed, but the cylinder 121 still has 20mm of rising space, so that the cylinder 121 drives the connecting plate 21 to squeeze the compression spring 222, and then the connecting plate 21 moves 20mm toward the direction close to the flange rod 23. After the connecting plate 21 rises, it faces the probe of the proximity switch 25, thereby completing the material detection.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gravity induction type material detection device used in a vacuum furnace, characterized in that: It includes a lifting drive mechanism (1) and a detection mechanism (2) arranged on the furnace barrel; the lifting drive mechanism (1) includes a flange plate sleeve (11) fixedly connected to the furnace barrel and a lifting assembly (12), and the detection mechanism (2) includes a connecting plate (21) connected to the lifting assembly (12), a telescopic assembly (22) arranged on the connecting plate (21), a flange rod (23) connected to the telescopic assembly (22), a butting assembly (24) for butting against the material tray to detect whether the material tray exists, and a proximity switch (25) for detecting the position of the connecting plate (21). The proximity switch (25) is connected to the flange rod (23), and the butting assembly (24) is arranged at one end of the flange rod (23) away from the telescopic assembly (22). When the butting assembly (24) is at the highest point, the height of the butting assembly (24) is higher than the upper surface height of the material supporting rod; the flange rod (23) passes through the flange plate sleeve (11), and a sealing assembly (3) is sleeved outside the flange rod (23). One end of the sealing assembly (3) is connected to the flange plate sleeve (11), and the other end is connected to the flange end of the flange rod (23).

2. The gravity induction material detection device used in a vacuum furnace according to claim 1, characterized in that: The lifting assembly (12) includes a cylinder (121) and a cylinder fixed seat (122) fixedly connected to the flange plate sleeve (11). The cylinder (121) is arranged on the cylinder fixed seat (122), and the telescopic end of the cylinder (121) is connected to the connecting plate (21).

3. The gravity induction type material detection device used in a vacuum furnace according to claim 2, characterized in that: A limit block (124) is arranged on the cylinder fixed seat (122), a guiding hole (1241) is opened on the limit block (124), a guiding rod (125) is arranged on the connecting plate (21), and the guiding rod (125) passes through the guiding hole (1241) and is slidably connected to the limit block (124).

4. A gravity-sensing material detection device used in a vacuum furnace according to claim 1, characterized in that: The telescopic assembly (22) includes a fixed tube (221) arranged on the connecting plate (21) and a compression spring (222) sleeved outside the flange rod (23). The fixed tube (221) is sleeved outside the compression spring (222), one end of the compression spring (222) is connected to the connecting plate (21), and the other end is connected to the flange end of the flange rod (23).

5. The gravity induction type material detection device used in a vacuum furnace according to claim 1, wherein: The butting assembly (24) includes a molybdenum rod (241) connected to one end of the flange rod (23) away from the telescopic assembly (22) and a top cap (242) arranged at one end of the molybdenum rod (241) away from the flange rod (23). The top cap (242) is used for butting against the material tray.

6. The gravity induction type material detection device used in a vacuum furnace according to claim 1, wherein: An L-shaped mounting plate (251) is connected to the flange end of the flange rod (23), and the proximity switch (25) is arranged on the L-shaped mounting plate (251). When the telescopic assembly (22) is in a compressed state, the probe of the proximity switch (25) is directly opposite to the connecting plate (21).

7. The gravity induction type material detection device used in a vacuum furnace according to claim 1, wherein: The sealing assembly (3) includes a welded corrugated steel pipe (31), a first connecting flange (32) and a second connecting flange (33) respectively arranged at both ends of the welded corrugated steel pipe (31). The first connecting flange (32) is connected to the flange plate sleeve (11), and the second connecting flange (33) is connected to the flange end of the flange rod (23).

8. The gravity induction type material detection device used in a vacuum furnace according to claim 2, characterized in that: An electromagnetic valve (123) for controlling the expansion and contraction of the cylinder (121) is arranged on the flange plate sleeve (11), and the electromagnetic valve (123) is electrically connected to the cylinder (121).

Images