Nitrogen counterweight device of machining center

Abstract

The utility model discloses a nitrogen counterweight device for a machining center, which is applied to the field of machining centers and comprises a machining table, a fixing frame is bolted to the top of the machining table, a lifting mechanism is arranged in the fixing frame, and a fixing plate is bolted to the back of the fixing frame. The telescopic protection cover is arranged to protect the piston rod of the air cylinder, so that the aim of having the protection function can be achieved, the cleanness of the piston rod is ensured, the service life is prolonged, the pressing rod is pressed through the pressing rod pressing block to drive the sliding rod to move, the sliding rod moves to enable the clamping head and the clamping hole to be separated from clamping, the telescopic cover is detached, and the working efficiency is improved. According to the nitrogen tank fixing device, the pressing block is pressed to enable the pressing rod to move, the pressing rod moves to drive the fixing head to be disengaged from the fixing hole in a clamping mode, the second fixing ring is opened, and the nitrogen tank is taken down to be replaced, so that the purpose of conveniently replacing the nitrogen tank can be achieved, the workload is reduced, and the replacement efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining centers, and in particular to a nitrogen counterweight device for machining centers. Background Technology

[0002] A search of Chinese patents revealed publication number CN208759098U, which discloses a high-pressure nitrogen balancing cylinder mechanism for counterweights in machining centers. This mechanism addresses the problem that existing nitrogen balancing devices for machining centers are difficult to observe and monitor the current load of the Z-axis drive motor, thus failing to guarantee a good balance in the machining center. The nitrogen balancing cylinder mechanism includes a high-pressure nitrogen cylinder and an annular cylinder connected to the high-pressure nitrogen cylinder via a gas pipe. A pressure gauge is installed at the mouth of the high-pressure nitrogen cylinder. The annular cylinder has a central hole and an annular piston is installed inside. This high-pressure nitrogen balancing cylinder mechanism makes the machine tool spindle box more responsive when moving up and down along the Z-axis, reducing forward and reverse buffering, effectively improving the surface finish of the workpiece, and increasing the movement speed. A load monitoring mechanism is used to monitor the current load of the drive motor, thereby ensuring a good balance in the machining center.

[0003] Existing nitrogen counterweight devices lack protective functions. Generally, the cylinders of nitrogen counterweight devices are exposed, allowing dust in the air to adhere to the piston rod surface, increasing the resistance to piston rod extension and contraction. Dust also accelerates piston rod wear, affecting its sealing performance, making them inconvenient to use and difficult to replace nitrogen tanks. Nitrogen tanks are usually fixed with bolts, requiring tools for disassembly and reassembly during replacement, which is cumbersome, increases workload, and reduces replacement efficiency. To solve the above problems, we propose a nitrogen counterweight device for machining centers. Utility Model Content

[0004] The purpose of this invention is to provide a nitrogen counterweight device for machining centers, which has the advantages of protective function and easy replacement of nitrogen tanks.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a nitrogen counterweight device for a machining center, comprising a machining table, a fixed frame bolted to the top of the machining table, a lifting mechanism provided inside the fixed frame, a fixed plate bolted to the back of the fixed frame, a cylinder fixedly sleeved on the inner wall of the fixed plate, a support plate bolted to the surface of the lifting mechanism, a fixed seat bolted to the surface of both the support plate and the fixed plate, an installation rod slidably sleeved on the inner wall of the fixed seat, a telescopic protective cover bolted between the installation rods, a sliding rod slidably connected to the inner wall of the fixed seat, a snap-fit ​​connector bolted to the surface of the sliding rod, a snap-fit ​​hole provided on the surface of the installation rod, and the snap-fit ​​hole snaps into the snap-fit ​​connector, a first spring provided between the sliding rod and the inner wall of the fixed seat, a transmission rod bolted between the sliding rods, and a pressing rod bolted to the surface of the sliding rod.

[0006] By adopting the above technical solution, the piston rod of the cylinder is protected by a telescopic protective cover, which can achieve the purpose of protection, ensure the cleanliness of the piston rod, and improve its service life. By pressing the rod and pressing the block, the pressing rod drives the sliding rod to move. The movement of the sliding rod disengages the snap-fit ​​connector from the snap-fit ​​hole, allowing the telescopic cover to be disassembled for easy maintenance.

[0007] The present invention is further configured as follows: a first fixing ring is bolted to the surface of the fixing frame, a second fixing ring is hinged to the surface of the first fixing ring, a nitrogen tank is disposed between the first fixing ring and the second fixing ring, a valve is connected to the top of the nitrogen tank, a connecting pipe is disposed at the top of the valve, and the other end of the connecting pipe is connected to a cylinder, a fixing rod is bolted to the surface of the second fixing ring, a push rod is slidably sleeved on the inner wall of the first fixing ring, a second spring is disposed between one end of the push rod and the inner wall of the first fixing ring, a fixing head is bolted to the surface of the push rod, a fixing hole is opened on the surface of the fixing rod, and the fixing head is engaged with the fixing hole.

[0008] By adopting the above technical solution, pressing the pressing block moves the pressing rod, which in turn causes the fixing head to disengage from the fixing hole, opening the second fixing ring and allowing the nitrogen tank to be removed and replaced. This method facilitates the replacement of the nitrogen tank, reduces workload, and improves replacement efficiency.

[0009] The present invention is further configured such that: the lifting mechanism includes a motor, the motor is bolted to the top of the fixed frame, the output end of the motor passes through the fixed frame and is bolted to a lead screw, and the bottom of the lead screw is rotatably connected to the inner wall of the fixed frame, a sliding block is slidably connected to the inner wall of the fixed frame, the sliding block is threadedly connected to the lead screw, and the sliding block is bolted to a support plate, and a spindle box is bolted to the surface of the sliding block.

[0010] The above technical solution, with its lifting mechanism, facilitates use.

[0011] The present invention is further configured such that a pressing block is bolted to one end of both the pressing rod and the actuating rod.

[0012] By adopting the above technical solution, the pressing block is set to facilitate the movement of the pressing rod and the actuating rod.

[0013] The present invention is further configured such that one end of both the snap-fit ​​connector and the fixing head is wedge-shaped.

[0014] By adopting the above technical solution, both the snap-fit ​​connector and the fixing head are wedge-shaped, which facilitates the fixing of the telescopic protective cover and the second fixing ring.

[0015] The present invention is further configured such that a pressure gauge is connected to the top of the nitrogen tank.

[0016] By adopting the above technical solution, a pressure gauge is installed to facilitate the monitoring of nitrogen pressure and make replacement easier.

[0017] The present invention is further configured such that a quick-release head is provided between the connecting pipe and the valve.

[0018] By adopting the above technical solution and setting up a quick-release head, the nitrogen tank can be easily disassembled and installed.

[0019] The present invention is further provided with a rubber pad between the nitrogen tank and the processing table.

[0020] The above technical solution protects the nitrogen tank by installing rubber pads.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This utility model protects the piston rod of the cylinder by setting a telescopic protective cover, which can achieve the purpose of protection, ensure the cleanliness of the piston rod, and improve its service life. By pressing the rod and pressing the block, the pressing rod drives the sliding rod to move. The movement of the sliding rod disengages the snap-fit ​​connector from the snap-fit ​​hole, and the telescopic cover can be disassembled for easy maintenance.

[0023] 2. This utility model achieves the purpose of convenient nitrogen tank replacement by pressing the pressing block to move the pressing rod, which in turn causes the fixing head to disengage from the fixing hole, opening the second fixing ring and allowing the nitrogen tank to be removed and replaced. This reduces workload and improves replacement efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a rear sectional view of the structure of this utility model;

[0026] Figure 3 This is a top sectional view of a partial structure of this utility model;

[0027] Figure 4 This is a top sectional view of a partial structure of this utility model;

[0028] Figure 5 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0029] Figure 6 This is a utility model Figure 4 Enlarged view of the structure at point B in the middle.

[0030] Reference numerals: 1. Machining table; 2. Fixing frame; 3. Lifting mechanism; 4. Fixing plate; 5. Cylinder; 6. Support plate; 7. Fixing seat; 8. Mounting rod; 9. Telescopic protective cover; 10. Slide rod; 11. Snap connector; 12. Snap hole; 13. First spring; 14. Transmission rod; 15. Pressing rod; 16. First fixing ring; 17. Second fixing ring; 18. Nitrogen tank; 19. Valve; 20. Connecting pipe; 21. Fixing rod; 22. Pressing rod; 23. Second spring; 24. Fixing head; 25. Fixing hole; 26. Motor; 27. Lead screw; 28. Sliding block; 29. ​​Pressing block; 30. Pressure gauge; 31. Quick release head; 32. Rubber pad; 33. Spindle box. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1:

[0033] refer to Figure 1 , Figure 2 , Figure 3 and Figure 5A nitrogen counterweight device for a machining center includes a machining table 1. A fixed frame 2 is bolted to the top of the machining table 1. A lifting mechanism 3 is installed inside the fixed frame 2. A fixed plate 4 is bolted to the back of the fixed frame 2. A cylinder 5 is fixedly sleeved on the inner wall of the fixed plate 4. A support plate 6 is bolted to the surface of the lifting mechanism 3. Fixed seats 7 are bolted to the surfaces of both the support plate 6 and the fixed plate 4. Mounting rods 8 are slidably sleeved on the inner wall of the fixed seats 7. Telescopic protective covers 9 are bolted between the mounting rods 8. A sliding rod 10 is slidably connected to the inner wall of the fixed seats 7. A snap-fit ​​connector 11 is bolted to the surface of the sliding rod 10. A snap-fit ​​connector is provided on the surface of the mounting rod 8. Hole 12 is provided, and the snap-fit ​​hole 12 is snapped into the snap-fit ​​connector 11. A first spring 13 is provided between the slide rod 10 and the inner wall of the fixed seat 7. A transmission rod 14 is bolted between the slide rods 10. A pressing rod 15 is bolted to the surface of the slide rod 10. By setting a telescopic protective cover 9 to protect the piston rod of the cylinder 5, the purpose of protection can be achieved, ensuring the cleanliness of the piston rod and improving its service life. By pressing the rod 22 and pressing the block 29, the pressing rod 15 drives the slide rod 10 to move. The movement of the slide rod 10 causes the snap-fit ​​connector 11 to disengage from the snap-fit ​​hole 12, and the telescopic cover can be disassembled for easy maintenance.

[0034] refer to Figure 1 and Figure 2 The lifting mechanism 3 includes a motor 26, which is bolted to the top of the fixed frame 2. The output end of the motor 26 passes through the fixed frame 2 and is bolted to a lead screw 27. The bottom of the lead screw 27 is rotatably connected to the inner wall of the fixed frame 2. A sliding block 28 is slidably connected to the inner wall of the fixed frame 2. The sliding block 28 is threaded to the lead screw 27 and bolted to the support plate 6. A spindle box 33 is bolted to the surface of the sliding block 28. The lifting mechanism 3 facilitates use.

[0035] refer to Figure 3 and Figure 6 A pressing block 29 is bolted to one end of both the pressing rod 15 and the pressing rod 22. The pressing block 29 facilitates the movement of the pressing rod 15 and the pressing rod 22.

[0036] refer to Figure 5 and Figure 6 Both the snap-fit ​​connector 11 and the fixing head 24 are wedge-shaped at one end. By setting both the snap-fit ​​connector 11 and the fixing head 24 to be wedge-shaped, it is convenient to fix the telescopic protective cover 9 and to fix the second fixing ring 17.

[0037] Example 2:

[0038] refer to Figure 1 , Figure 2 , Figure 4 and Figure 6A first fixing ring 16 is bolted to the surface of the fixing frame 2, and a second fixing ring 17 is hinged to the surface of the first fixing ring 16. A nitrogen tank 18 is disposed between the first fixing ring 16 and the second fixing ring 17. A valve 19 is connected to the top of the nitrogen tank 18, and a connecting pipe 20 is disposed on the top of the valve 19. The other end of the connecting pipe 20 is connected to the cylinder 5. A fixing rod 21 is bolted to the surface of the second fixing ring 17, and a push rod 22 is slidably sleeved on the inner wall of the first fixing ring 16. One end of the push rod 22 is connected to the first fixing ring 5. A second spring 23 is provided between the inner walls of the ring 16. A fixing head 24 is bolted to the surface of the pressing rod 22. A fixing hole 25 is opened on the surface of the fixing rod 21, and the fixing head 24 is engaged with the fixing hole 25. By pressing the pressing block 29, the pressing rod 22 is moved. The movement of the pressing rod 22 causes the fixing head 24 to disengage from the fixing hole 25, thereby opening the second fixing ring 17 and removing the nitrogen tank 18 for replacement. This method can facilitate the replacement of the nitrogen tank 18, reduce the workload, and improve the replacement efficiency.

[0039] refer to Figure 2 The top of the nitrogen tank 18 is connected to a pressure gauge 30. By setting the pressure gauge 30, it is easy to check the nitrogen pressure and to replace it.

[0040] refer to Figure 2 A quick-release head 31 connects the connecting pipe 20 and the valve 19, which facilitates the disassembly and installation of the nitrogen tank 18.

[0041] refer to Figure 2 A rubber pad 32 is provided between the nitrogen tank 18 and the processing table 1 to protect the nitrogen tank 18.

[0042] Brief description of usage: The telescopic protective cover 9 protects the piston rod of cylinder 5, achieving the purpose of protection. Pressing the pressing block 29 causes the pressing rod 15 to move the sliding rod 10. The movement of the sliding rod 10 moves the transmission rod 14, which in turn moves another sliding rod 10. The movement of the sliding rod 10 moves the locking connector 11, disengaging it from the locking hole 12. The telescopic protective cover 9 can then be disassembled for maintenance. After maintenance, the mounting rod 8 is inserted into the fixing base 7, and the sliding rod 10 engages under the action of the first spring 13. The head 11 engages with the locking hole 12 to secure it, completing the installation. Pressing the pressing block 29 moves the pressing rod 22, which in turn moves the fixing head 24. The movement of the fixing head 24 disengages it from the fixing hole 25, opening the second fixing ring 17. The nitrogen tank 18 is then disassembled and removed. A new nitrogen tank 18 is placed into the first fixing ring 16, and the second fixing ring 17 is closed. Under the action of the second spring 23, the pressing rod 22 engages the fixing head 24 with the fixing hole 25 to secure it, completing the replacement and facilitating the replacement of the nitrogen tank 18.

[0043] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A nitrogen counterweight device for a machining center, comprising a machining table (1), characterized in that, A fixed frame (2) is bolted to the top of the processing table (1). A lifting mechanism (3) is installed inside the fixed frame (2). A fixed plate (4) is bolted to the back of the fixed frame (2). A cylinder (5) is fixedly sleeved on the inner wall of the fixed plate (4). A support plate (6) is bolted to the surface of the lifting mechanism (3). Fixed seats (7) are bolted to the surfaces of both the support plate (6) and the fixed plate (4). An installation rod (8) is slidably sleeved on the inner wall of the fixed seat (7). The installation rods (8) are bolted together. The device has a telescopic protective cover (9), and a slide rod (10) is slidably connected to the inner wall of the fixed base (7). A snap-fit ​​connector (11) is bolted to the surface of the slide rod (10). A snap-fit ​​hole (12) is opened on the surface of the mounting rod (8), and the snap-fit ​​hole (12) snaps into the snap-fit ​​connector (11). A first spring (13) is provided between the slide rod (10) and the inner wall of the fixed base (7). A transmission rod (14) is bolted between the slide rods (10). A pressing rod (15) is bolted to the surface of the slide rod (10).

2. The nitrogen counterweight device for a machining center according to claim 1, characterized in that, The surface of the fixing frame (2) is bolted with a first fixing ring (16), the surface of the first fixing ring (16) is hinged with a second fixing ring (17), a nitrogen tank (18) is provided between the first fixing ring (16) and the second fixing ring (17), the top of the nitrogen tank (18) is connected to a valve (19), the top of the valve (19) is provided with a connecting pipe (20), and the other end of the connecting pipe (20) is connected to the cylinder (5), the surface of the second fixing ring (17) is bolted with a fixing rod (21), the inner wall of the first fixing ring (16) is slidably sleeved with a push rod (22), one end of the push rod (22) is provided with a second spring (23) between it and the inner wall of the first fixing ring (16), the surface of the push rod (22) is bolted with a fixing head (24), the surface of the fixing rod (21) is provided with a fixing hole (25), and the fixing head (24) is engaged with the fixing hole (25).

3. The nitrogen counterweight device for a machining center according to claim 1, characterized in that, The lifting mechanism (3) includes a motor (26), which is bolted to the top of the fixed frame (2). The output end of the motor (26) passes through the fixed frame (2) and is bolted to a lead screw (27). The bottom of the lead screw (27) is rotatably connected to the inner wall of the fixed frame (2). A sliding block (28) is slidably connected to the inner wall of the fixed frame (2). The sliding block (28) is threadedly connected to the lead screw (27). The sliding block (28) is bolted to the support plate (6). A spindle box (33) is bolted to the surface of the sliding block (28).

4. A nitrogen counterweight device for a machining center according to claim 2, characterized in that, A pressing block (29) is bolted to one end of both the pressing rod (15) and the pressing rod (22).

5. A nitrogen counterweight device for a machining center according to claim 2, characterized in that, Both the snap-fit ​​connector (11) and the fixing head (24) have a wedge-shaped end.

6. A nitrogen counterweight device for a machining center according to claim 2, characterized in that, The top of the nitrogen tank (18) is connected to a pressure gauge (30).

7. A nitrogen counterweight device for a machining center according to claim 2, characterized in that, A quick-release head (31) is connected between the connecting pipe (20) and the valve (19).

8. A nitrogen counterweight device for a machining center according to claim 2, characterized in that, A rubber pad (32) is provided between the nitrogen tank (18) and the processing table (1).

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