Nitrogen charging device for die casting machine

Abstract

The utility model discloses a nitrogen filling device for die -casting machine, including nitrogen filling tank and setting at nitrogen filling tank top's control panel and alarm device, the outside of control panel is equipped with dustproof mechanism, the left side of nitrogen filling tank is provided with inlet pipe and outlet pipe, and the inlet pipe is provided with three, the utility model discloses when using, after the outside gas input pipe and output pipe pass through the elastic cover and connect with inlet pipe and outlet pipe respectively, and through the sealing of fixed frame inner chamber after closing the movable door, so that when the connection loosens and causes gas leakage, make the gas through the air inlet hole and send into the fixed cylinder inner chamber, and push the air -tight plug body and overcome the resistance of second spring and move upward, when the plug body electric connection piece and fixed electric connection piece are connected and can start the alarm automatically, thereby send the alarm and remind the staff, and then improve the security of device use.

Description

Technical Field

[0001] This utility model relates to the technical field of nitrogen filling devices, and in particular to a nitrogen filling device for a die-casting machine. Background Technology

[0002] A die-casting machine is a machine used for pressure casting. It includes both hot-chamber and cold-chamber types, and both are further divided into vertical and horizontal types. Under pressure, the die-casting machine injects molten metal into a mold to cool and solidify. After the mold is opened, a solid metal casting is obtained. It was initially used for die-casting lead type. After leaks or maintenance, the accumulator of a die-casting machine needs to be replenished with nitrogen. This involves pressurizing the nitrogen in the nitrogen cylinder and then filling the accumulator. A nitrogen filling device is required during the nitrogen filling process.

[0003] A search revealed that Chinese patent authorization number CN221473467U discloses a nitrogen filling device for a die-casting machine. By setting up a gas sensor and an alarm device, when the gas sensor detects that the gas entering the inlet is not nitrogen, the control system can drive the alarm device to activate to remind people. This can effectively avoid the risk of accidental filling of the energy storage device, and can detect the mistake of filling with nitrogen in time, thus greatly improving safety.

[0004] However, the aforementioned nitrogen filling device requires connecting the external gas input and output pipes to the inlet and outlet pipes on the nitrogen filling tank when injecting and discharging gas. However, in actual operation, the pipe connection is prone to instability due to operator carelessness, resulting in gas leakage, which poses a certain danger. In addition, the control system on the aforementioned nitrogen filling tank is always exposed and is easily covered by dust and impurities, thus affecting the normal operation of the control system. Therefore, we propose a nitrogen filling device for die-casting machines to solve the above problems. Utility Model Content

[0005] One of the objectives of this utility model is achieved through the following technical solution:

[0006] A nitrogen filling device for a die-casting machine includes a nitrogen filling tank and a control panel and alarm device mounted on the top of the nitrogen filling tank. The control panel has a dustproof mechanism on its outer side. An air inlet pipe and an air outlet pipe are provided on the left side of the nitrogen filling tank, and three air inlet pipes are provided. Each air inlet pipe is equipped with a gas sensor and a pressure sensor. The air inlet pipe and the air outlet pipe are fitted with the same fixing frame, and the fixing frame is fixedly connected to the left side wall of the nitrogen filling tank. A movable door is connected to the left side of the inner cavity of the fixing frame, and a handle is provided on the left front of the movable door. A monitoring mechanism is provided in the inner cavity of the fixing frame, and casters are provided at the four corners of the bottom of the nitrogen filling tank.

[0007] Furthermore, the dustproof mechanism includes a dust cover, which is mounted on top of the control panel. Fixed plates are slidably connected to both the front and rear sides of the dust cover, and the fixed plates are fixedly connected to the top of the nitrogen filling box.

[0008] Furthermore, a positioning plate is fixedly connected to the top of the inner cavity of the dust cover near the right side, and a positioning groove is opened on the right side of the positioning plate. A positioning block that matches the positioning groove is inserted into the inner cavity of the positioning groove, and a scraper is fixedly connected to the right side of the positioning block. A cleaning cloth is provided on the lower surface of the scraper, and a slot is opened on the right side of the scraper. A limiting plate that matches the slot is inserted into the inner cavity of the slot. A connecting rod is fixedly connected to the top of the limiting plate near the right side. A cavity is opened on the dust cover, and a through hole communicating with the inner cavity is opened on the right side of the dust cover. The other end of the connecting rod passes through the through hole, extends into the inner cavity of the cavity, and is fixedly connected to the limiting block. The limiting block is fitted to the inner wall of the cavity. A first spring is sleeved on the outer wall of the connecting rod, and the two ends of the first spring are fixedly connected to the limiting block and the inner wall of the cavity, respectively.

[0009] Furthermore, the monitoring mechanism includes a fixed cylinder, which is fixedly attached to the top of the fixed frame. The bottom of the fixed cylinder has an air inlet, and the top of the fixed cylinder has two symmetrical exhaust holes. A fixed electrical connection piece is provided at the center of the top of the inner cavity of the fixed cylinder, and a plug electrical connection piece is provided directly below the fixed electrical connection piece. An airtight plug is fixedly connected to the bottom of the plug electrical connection piece, and two symmetrical second springs are provided at the bottom of the airtight plug. The bottom ends of the two second springs are fixedly connected to the bottom of the inner cavity of the fixed cylinder. An alarm is provided on the left side of the nitrogen filling box near the top.

[0010] Furthermore, a connecting plate is fixedly connected to the right side of the movable door near the top, and a positioning hole is provided on the connecting plate. A T-shaped rod slides through the top of the fixed frame near the left side, and the longest end of the T-shaped rod is inserted into the inner cavity of the positioning hole. A third spring is sleeved on the outside of the T-shaped rod, and the two ends of the third spring are fixedly connected to the T-shaped rod and the fixed frame, respectively.

[0011] Furthermore, handrails are provided on both the front and rear sides of the nitrogen filling box.

[0012] Furthermore, the movable door is provided with elastic sleeves that correspond to the number and position of the air intake pipes.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. Through the arrangement of a fixed frame, movable door, handle, elastic sleeve, positioning plate, positioning hole, T-shaped rod, third spring, fixed cylinder, air inlet, air outlet, fixed electrical connection piece, plug electrical connection piece, airtight plug, and second spring, after the external gas input pipe and output pipe pass through the elastic sleeve, they are connected to the air inlet pipe and air outlet pipe respectively. After the movable door is closed, the inner cavity of the fixed frame is sealed. Thus, when the connection is loose and gas leakage occurs, the gas is transported into the inner cavity of the fixed cylinder through the air inlet, and pushes the airtight plug to move upward against the resistance of the second spring. When the plug electrical connection piece is connected to the fixed electrical connection piece, the alarm can be automatically activated, thereby sounding an alarm and reminding the staff, thus improving the safety of the device.

[0015] 2. By using a dust cover, fixing plate, scraper, cleaning cloth, positioning plate, positioning groove, positioning block, slot, limit plate, connecting rod, limit block and first spring, the control panel can be covered by the dust cover when not in use to reduce dust adhesion. When the control panel needs to be used, the dust cover can be pushed up and slid, and the dust on the control panel mirror surface can be automatically cleaned by the synchronous movement of the cleaning cloth, ensuring the cleanliness of the control panel mirror surface, so that the staff can easily observe the information on the control panel and facilitate operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main view structure of this embodiment;

[0017] Figure 2 This is a schematic diagram of the left-side structure in this embodiment;

[0018] Figure 3 This is the left sectional view of the fixed frame in this embodiment;

[0019] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle;

[0020] Figure 5 for Figure 1 Enlarged view of the structure at point B.

[0021] In the diagram: 1. Nitrogen filling tank; 2. Alarm device; 3. Control panel; 4. Casters; 5. Inlet pipe; 6. Gas sensor; 7. Pressure sensor; 8. Outlet pipe; 9. Fixing frame; 10. Movable door; 11. Elastic sleeve; 12. Connecting plate; 13. Positioning hole; 14. T-shaped rod; 15. Third spring; 16. Fixing cylinder; 17. Inlet port; 18. Exhaust port; 19. Fixing electrical connection piece; 20. Plug body electrical connection piece; 21. Airtight plug body; 22. Second spring; 23. Alarm; 24. Handrail; 25. Dust cover; 26. Fixing plate; 27. Positioning plate; 28. Positioning groove; 29. ​​Positioning block; 30. Scraper; 31. Cleaning cloth; 32. Slot; 33. Limiting plate; 34. Connecting rod; 35. Limiting block; 36. First spring. Detailed Implementation

[0022] Please see Figures 1 to 5 The present invention provides the following technical solution:

[0023] A nitrogen filling device for a die-casting machine includes a nitrogen filling tank 1 and a control panel 3 and an alarm device 2 mounted on the top of the nitrogen filling tank 1. The control panel 3 has a dustproof mechanism on its outer side. An inlet pipe 5 and an outlet pipe 8 are located on the left side of the nitrogen filling tank 1, with three inlet pipes 5. Each inlet pipe 5 is equipped with a gas sensor 6 and a pressure sensor 7. The inlet pipes 5 and the outlet pipes 8 are fitted with the same fixing frame 9, which is fixedly connected to the left side wall of the nitrogen filling tank 1. A hinged door 10 is connected to the left side of the inner cavity of the fixing frame 9. The left front of the movable door 10... The device is equipped with handles and elastic sleeves 11 on the movable door 10, which correspond to the number and position of the air inlet pipes 5. Through the elastic sleeves 11, the external gas input pipe and output pipe can be connected to the air inlet pipe 5 and the air outlet pipe 8 after passing through the elastic sleeves 11, thereby ensuring the sealing effect of the fixed frame 9. The inner cavity of the fixed frame 9 is equipped with a monitoring mechanism. Casters 4 are provided at the four corners of the bottom of the nitrogen filling box 1. Handrails 24 are provided on the front and rear sides of the nitrogen filling box 1. The device can be moved by holding the handrails 24, and the casters 4 improve the flexibility of the device in handling.

[0024] The dustproof mechanism includes a dust cover 25, which is installed on the top of the control panel 3. Fixing plates 26 are slidably connected to both the front and rear sides of the dust cover 25, and the fixing plates 26 are fixedly connected to the top of the nitrogen filling box 1. The dust cover 25 can protect the control panel 3 from dust.

[0025] A positioning plate 27 is fixedly connected to the top of the inner cavity of the dust cover 25 near the right side. A positioning groove 28 is provided on the right side of the positioning plate 27. A matching positioning block 29 is inserted into the inner cavity of the positioning groove 28. A scraper 30 is fixedly connected to the right side of the positioning block 29. A cleaning cloth 31 is provided on the lower surface of the scraper 30. A slot 32 is provided on the right side of the scraper 30. A matching limiting plate 33 is inserted into the inner cavity of the slot 32. A connecting rod 34 is fixedly connected to the top of the limiting plate 33 near the right side. A cavity is provided on the dust cover 25, and a through hole communicating with the inner cavity is provided on the right side of the dust cover 25. The connecting rod 34... One end of the rod passes through a perforation and extends into the inner cavity of the cavity, where a limiting block 35 is fixedly connected. The limiting block 35 is fitted to the inner wall of the cavity. A first spring 36 is sleeved on the outer wall of the connecting rod 34, and the two ends of the first spring 36 are fixedly connected to the limiting block 35 and the inner wall of the cavity, respectively. When the dust cover 25 is pushed to slide upward, the dust attached to the surface of the control panel 3 can be automatically cleaned by the synchronous movement of the cleaning cloth 31. When the cleaning cloth 31 needs to be cleaned, simply pull the connecting rod 34 and pull the limiting plate 33 out of the inner cavity of the slot 32. Then, pull the scraper 30 and pull the positioning block 29 out of the inner cavity of the positioning groove 28.

[0026] The monitoring mechanism includes a fixed cylinder 16, which is fixedly attached to the top of the fixed frame 9. An air inlet 17 is located at the bottom of the fixed cylinder 16, and two symmetrical exhaust holes 18 are located at the top. A fixed electrical connection piece 19 is located at the center of the top of the inner cavity of the fixed cylinder 16, and a plug electrical connection piece 20 is located directly below the fixed electrical connection piece 19. A gas-tight plug 21 is fixedly connected to the bottom of the plug electrical connection piece 20, and two symmetrical second springs 22 are located at the bottom of the gas-tight plug 21. The bottom ends of both second springs 22 are fixedly connected to the bottom of the inner cavity of the fixed cylinder 16. An alarm 23 is located on the left side of the nitrogen filling box 1 near the top. When a connection in the pipeline becomes loose, the leaked gas can be introduced into the inner cavity of the fixed cylinder 16, pushing the gas-tight plug 21 upwards against the resistance of the second springs 22. This connects the plug electrical connection piece 20 with the fixed electrical connection piece 19, thereby activating the alarm 23 to alert personnel to handle the situation promptly.

[0027] A connecting plate 12 is fixedly connected to the right side of the movable door 10 near the top, and a positioning hole 13 is provided on the connecting plate 12. A T-shaped rod 14 slides through the top of the fixed frame 9 near the left side, and the longest end of the T-shaped rod 14 is inserted into the inner cavity of the positioning hole 13. A third spring 15 is sleeved on the outside of the T-shaped rod 14, and the two ends of the third spring 15 are fixedly connected to the T-shaped rod 14 and the fixed frame 9 respectively. By inserting the longest end of the T-shaped rod 14 into the inner cavity of the positioning hole 13, the movable door 10 can be locked after closing.

[0028] Working Principle: In use, the external gas input and output pipes are connected to the inlet pipe 5 and outlet pipe 8 respectively after passing through the elastic sleeve 11. Then, the movable door 10 is closed and the longest end of the T-shaped rod 14 is inserted into the inner cavity of the positioning hole 13, thereby locking the movable door 10. By pushing the dust cover 25 upward, the control panel 3 is exposed, thus enabling inflation and deflation operations. During the upward movement of the dust cover 25, the cleaning cloth 31 automatically cleans the dust and impurities adhering to the mirror surface of the control panel 3, ensuring the cleanliness of the control panel 3. The fixed cylinder 16, air inlet 17, exhaust outlet 18, fixed electrical connection piece 19, and plug are used to achieve this. With the electrical connector 20, the airtight plug 21, and the second spring 22 in place, when the pipeline becomes loose and causes gas leakage, the air pressure inside the fixed frame 9 increases, and the gas is forced into the inner cavity of the fixed cylinder 16 through the air inlet 17. This pushes the plug electrical connector 20 upward and activates the alarm 23, which can then remind the staff to handle the situation in time and improve the safety of the device. In addition, when the cleaning cloth 31 needs to be disassembled and cleaned, the connecting rod 34 can be pulled to overcome the resistance of the first spring 36 and the limiting plate 33 can be pulled out from the inner cavity of the slot 32. Then, the scraper 30 can be pulled to pull the positioning block 29 out from the inner cavity of the positioning groove 28, which improves the convenience of disassembling and cleaning the cleaning cloth 31.

Claims

1. A nitrogen filling device for a die-casting machine, comprising a nitrogen filling tank (1) and a control panel (3) and an alarm device (2) disposed on the top of the nitrogen filling tank (1), characterized in that: The control panel (3) is provided with a dustproof mechanism on the outside. The nitrogen filling box (1) is provided with an air inlet pipe (5) and an air outlet pipe (8) on the left side. There are three air inlet pipes (5). Each air inlet pipe (5) is provided with a gas sensor (6) and a pressure sensor (7). The air inlet pipe (5) and the air outlet pipe (8) are fitted with the same fixed frame (9) on the outside. The fixed frame (9) is fixedly connected to the left side wall of the nitrogen filling box (1). The left side of the inner cavity of the fixed frame (9) is connected to a movable door (10). The left front of the movable door (10) is provided with a handle. The inner cavity of the fixed frame (9) is provided with a monitoring mechanism. Casters (4) are provided at the four corners of the bottom of the nitrogen filling box (1).

2. The nitrogen purging device for a die-casting machine as described in claim 1, characterized in that: The dustproof mechanism includes a dust cover (25), which is placed on top of the control panel (3). Fixing plates (26) are slidably connected to both the front and rear sides of the dust cover (25), and the fixing plates (26) are fixedly connected to the top of the nitrogen filling box (1).

3. The nitrogen purging device for a die-casting machine as described in claim 2, characterized in that: A positioning plate (27) is fixedly connected to the top of the inner cavity of the dust cover (25) near the right side. A positioning groove (28) is provided on the right side of the positioning plate (27). A matching positioning block (29) is inserted into the inner cavity of the positioning groove (28). A scraper (30) is fixedly connected to the right side of the positioning block (29). A cleaning cloth (31) is provided on the lower surface of the scraper (30). A slot (32) is provided on the right side of the scraper (30). A matching limiting plate (33) is inserted into the inner cavity of the slot (32). A connecting rod (34) is fixedly connected to the top of the plate (33) near the right side. A cavity is opened on the dust cover (25), and a through hole communicating with the inner cavity is opened on the right side of the dust cover (25). The other end of the connecting rod (34) passes through the through hole, extends into the inner cavity of the cavity, and is fixedly connected to a limiting block (35). The limiting block (35) is fitted to the inner wall of the cavity. A first spring (36) is sleeved on the outer wall of the connecting rod (34), and the two ends of the first spring (36) are fixedly connected to the limiting block (35) and the inner wall of the cavity, respectively.

4. The nitrogen purging device for a die-casting machine as described in claim 1, characterized in that: The monitoring mechanism includes a fixed cylinder (16), which is fixed to the top of the fixed frame (9). The bottom of the fixed cylinder (16) is provided with an air inlet (17), and the top of the fixed cylinder (16) is provided with two symmetrical exhaust holes (18). A fixed electrical connection piece (19) is provided at the center of the top of the inner cavity of the fixed cylinder (16), and a plug electrical connection piece (20) is provided directly below the fixed electrical connection piece (19). An airtight plug (21) is fixedly connected to the bottom of the plug electrical connection piece (20), and two symmetrical second springs (22) are provided at the bottom of the airtight plug (21). The bottom ends of the two second springs (22) are fixedly connected to the bottom of the inner cavity of the fixed cylinder (16). An alarm (23) is provided on the left side of the nitrogen filling box (1) near the top.

5. A nitrogen purging device for a die-casting machine as described in claim 1, characterized in that: A connecting plate (12) is fixedly connected to the right side of the movable door (10) near the top, and a positioning hole (13) is provided on the connecting plate (12). A T-shaped rod (14) slides through the top of the fixed frame (9) near the left side, and the longest end of the T-shaped rod (14) is inserted into the inner cavity of the positioning hole (13). A third spring (15) is sleeved on the outside of the T-shaped rod (14), and the two ends of the third spring (15) are fixedly connected to the T-shaped rod (14) and the fixed frame (9) respectively.

6. The nitrogen purging device for a die-casting machine as described in claim 1, characterized in that: Handrails (24) are provided on both the front and rear sides of the nitrogen filling box (1).

7. A nitrogen purging device for a die-casting machine as described in claim 1, characterized in that: The movable door (10) is provided with an elastic sleeve (11) that corresponds to the number and position of the air inlet pipe (5).

Images