Ball screw circulating cooling device

Abstract

The utility model discloses a kind of ball screw circulating cooling devices, including screw rod, the screw rod is sleeved with nut seat, ball is installed between the nut seat and screw rod, the ball circulates and rolls between the nut seat and screw rod, the outside of the nut seat is installed with heat exchange fin, fan is fixed in the heat exchange fin end, cooling liquid inlet and cooling liquid outlet are installed on the nut seat, inlet channel, outlet channel and cooling channel are set in the nut seat, the cooling liquid inlet is connected with inlet channel, and the cooling liquid outlet is connected with outlet channel. The ball screw circulating cooling device is provided with inlet channel, outlet channel and cooling channel in nut seat, can effectively cool nut seat and ball, so as to avoid nut seat and ball to be affected by the adverse effects of friction high temperature, inlet channel, outlet channel and cooling channel and the circulating cooling device of outside rotate cooling liquid work, realize circulating cooling cooling.

Description

Technical Field

[0001] This utility model relates to the field of ball screw technology, specifically a ball screw circulating cooling device. Background Technology

[0002] A ball screw is a mechanical transmission device primarily used to convert rotary motion into linear motion, or vice versa. It consists of a screw, a nut, and balls, and is characterized by its flexibility and smooth operation, thus finding wide application in machinery.

[0003] In actual use, when the ball screw is used for a long time, the friction between the balls and the screw will generate heat, causing the temperature of the ball screw to rise. This seriously affects the transmission accuracy of the ball screw and reduces its service life. Therefore, we propose a ball screw circulating cooling device to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a ball screw circulating cooling device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ball screw circulating cooling device, comprising a screw, a nut seat sleeved on the screw, balls installed between the nut seat and the screw, the balls circulating between the nut seat and the screw, heat exchange fins installed on the outer side of the nut seat, a fan fixed to the end of the heat exchange fins, a coolant inlet and a coolant outlet installed on the nut seat, an inlet channel, an outlet channel and a cooling channel opened inside the nut seat, the coolant inlet connecting to the inlet channel, the coolant outlet connecting to the outlet channel, the inlet channel and the outlet channel connecting to the cooling channel, and an oil inlet opening on the lower side of the nut seat, with an oil inlet sealing plug installed inside the oil inlet.

[0006] Preferably, the heat exchange plate and the nut seat are connected by bolts to form a detachable structure, and the heat exchange plate and the fan are arranged symmetrically on the left and right sides of the nut seat.

[0007] Preferably, the fan inlet faces the side of the heat exchange fins, and the fan outlet faces the lead screw.

[0008] Preferably, multiple sets of liquid inlet channels, liquid outlet channels, and cooling channels are provided in the nut seat, and the cooling channels surround the outside of the ball bearing.

[0009] Preferably, a sealing ring is installed on the inner side of both ends of the connection between the nut seat and the lead screw, and a retaining spring is provided on the outer side of the sealing ring, which is engaged in the nut seat.

[0010] Preferably, the oil filling port sealing plug and the oil filling port on the nut seat are connected by a thread, and the oil filling port is located between the balls.

[0011] Preferably, the coolant inlet and coolant outlet are connected to an external circulating cooling device.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) The ball screw circulating cooling device is provided with an inlet channel, an outlet channel and a cooling channel in the nut seat, which can effectively cool the nut seat and the ball, thereby avoiding the adverse effects of friction and high temperature on the nut seat and the ball. The inlet channel, outlet channel and cooling channel are connected to the external circulating cooling device to rotate the coolant and achieve circulating cooling.

[0014] (2) A heat exchange plate and a fan are provided on the nut seat. The heat exchange plate can absorb the low temperature emitted by the internal coolant on the outside of the nut seat. The fan blows the low temperature air between the heat exchange plates to the lead screw to cool the lead screw and reduce the adverse effects of friction and high temperature on the lead screw, ensuring the overall cooling effect of the ball screw. At the same time, an oil filling port sealing plug is also provided on the nut seat, which can add lubricating oil between the lead screw and the nut seat to effectively reduce friction. Combined with the cooling structure of the ball screw, the transmission accuracy and service life of the ball screw are not affected. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a cross-sectional view of the nut seat of this utility model;

[0018] Figure 4 This is a cross-sectional view of the nut seat of this utility model;

[0019] Figure 5 This is a cross-sectional view of the nut seat of this utility model;

[0020] Figure 6 This is a schematic diagram of the ball distribution structure of this utility model.

[0021] In the diagram: 1. Lead screw; 2. Nut seat; 3. Heat exchange fins; 4. Fan; 5. Coolant inlet; 6. Coolant outlet; 7. Ball bearing; 8. Inlet channel; 9. Outlet channel; 10. Cooling channel; 11. Oil filler cap seal; 12. Sealing ring; 13. Snap ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 This utility model provides a technical solution: a ball screw circulating cooling device, including a screw 1, a nut seat 2 sleeved on the screw 1, a ball 7 installed between the nut seat 2 and the screw 1, the ball 7 circulates between the nut seat 2 and the screw 1, a sealing ring 12 is installed on the inner side of both ends of the connection between the nut seat 2 and the screw 1, and a retaining spring 13 is provided on the outer side of the sealing ring 12, the retaining spring 13 is engaged in the nut seat 2.

[0024] A heat exchange fin 3 is installed on the outside of the nut seat 2, and a fan 4 is fixed to the end of the heat exchange fin 3.

[0025] Furthermore, the heat exchanger 3 and the nut seat 2 are connected by bolts to form a disassembly structure, which facilitates the disassembly and cleaning of the heat exchanger 3 and the fan 4. The heat exchanger 3 and the fan 4 are symmetrically arranged in two sets on the left and right sides of the nut seat 2. The air inlet of the fan 4 faces the side of the heat exchanger 3, and the air outlet of the fan 4 faces the lead screw 1, so that the fan 4 can blow the cold air between the heat exchanger 3 to the lead screw 1, ensuring that the lead screw 1 receives a comprehensive air-cooling effect.

[0026] The nut seat 2 is equipped with a coolant inlet 5 and a coolant outlet 6. The coolant inlet 5 and the coolant outlet 6 are connected to an external circulating cooling device. The cooling circuit device includes a coolant tank, a hydraulic pump, an electrical control box, a vapor compression refrigeration system, and a liquid delivery pipe. The vapor compression refrigeration system includes a refrigeration compressor, a condenser, an evaporator, and a throttle valve.

[0027] The coolant in the coolant tank is pumped by a hydraulic pump through the evaporator in the vapor compression refrigeration system. The coolant is cooled by the heat absorbed by the evaporator and then connected to the coolant inlet 5 via a delivery pipe. The coolant flows in the inlet channel 8, cooling channel 10, and outlet channel 9 and flows out from the coolant outlet 6. It is then sent back to the coolant tank through another delivery pipe, so that the coolant can be recycled, thereby achieving continuous cooling of the ball screw.

[0028] In a vapor compression refrigeration system, the liquid refrigerant absorbs heat from the coolant in the evaporator, vaporizing into low-temperature, low-pressure vapor. This vapor is then drawn into the compressor, compressed into high-pressure, high-temperature vapor, and discharged into the condenser. In the condenser, the refrigerant releases heat to the cooling medium (water or air), condensing into a high-pressure liquid. This liquid is then throttled through a throttling valve to become low-pressure, low-temperature refrigerant, which re-enters the evaporator to absorb heat from the coolant and vaporize, thus achieving the purpose of refrigerating the coolant in a cycle. In this way, the refrigerant completes one coolant refrigeration cycle in the system through four basic processes: evaporation, compression, condensation, and throttling.

[0029] The nut seat 2 has an inlet channel 8, an outlet channel 9 and a cooling channel 10. The coolant inlet 5 is connected to the inlet channel 8, the coolant outlet 6 is connected to the outlet channel 9, and the inlet channel 8 and the outlet channel 9 are connected to the cooling channel 10.

[0030] Furthermore, multiple sets of liquid inlet channel 8, liquid outlet channel 9 and cooling channel 10 are provided in the nut seat 2 to achieve sufficient cooling of the nut seat 2, and the cooling channel 10 surrounds the outside of the ball 7 to ensure normal cooling of the ball 7.

[0031] The nut seat 2 has an oil inlet on its lower side, and an oil inlet sealing plug 11 is installed inside the oil inlet.

[0032] Furthermore, the oil filling port sealing plug 11 is threadedly connected to the oil filling port on the nut seat 2, and the oil filling port is located between the balls 7, which facilitates the removal of the oil filling port sealing plug 11 to inject lubricating oil into the nut seat 2.

[0033] Specifically, when the ball screw is working, first remove the oil filling port sealing plug 11 on the nut seat 2, and inject lubricating oil between the screw 1 and the nut seat 2 through the oil filling port on the nut seat 2 to reduce the friction between the ball 7 and the screw 1 and the nut seat 2, thereby reducing the heat generated by friction.

[0034] When the ball screw starts working, the external circulating cooling device injects low-temperature coolant into the coolant inlet 5. The low-temperature coolant flows through the inlet channel 8, cooling channel 10 and outlet channel 9 in the nut seat 2, thereby cooling the nut seat 2 and the ball 7.

[0035] When the low-temperature coolant cools down the nut seat 2, the outer surface of the nut seat 2 is in a low-temperature state. The fan 4 on the outside of the nut seat 2 starts, the outer surface of the nut seat 2 is in a low-temperature state, and the heat exchange plate 3 in contact with the nut seat 2 is also in a low-temperature state. The fan 4 blows the low-temperature air between the heat exchange plate 3 toward the lead screw 1 to cool down the lead screw 1.

[0036] The above describes the cooling process of the ball screw during operation. Any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ball screw cycle cooling device comprising a screw rod (1), characterized in that: A nut seat (2) is sleeved on the lead screw (1), and a ball bearing (7) is installed between the nut seat (2) and the lead screw (1). The ball bearing (7) circulates between the nut seat (2) and the lead screw (1). A heat exchange plate (3) is installed on the outside of the nut seat (2), and a fan (4) is fixed at the end of the heat exchange plate (3); The nut seat (2) is equipped with a coolant inlet (5) and a coolant outlet (6). The nut seat (2) is provided with an inlet channel (8), an outlet channel (9) and a cooling channel (10). The coolant inlet (5) is connected to the inlet channel (8), the coolant outlet (6) is connected to the outlet channel (9), and the inlet channel (8) and the outlet channel (9) are connected to the cooling channel (10). The nut seat (2) has an oil inlet on its lower side, and an oil inlet sealing plug (11) is installed inside the oil inlet.

2. The ball screw circulating cooling device according to claim 1, characterized in that: The heat exchange plate (3) and the nut seat (2) are connected by bolts to form a disassembly structure, and the heat exchange plate (3) and the fan (4) are arranged symmetrically on the left and right sides of the nut seat (2).

3. The ball screw circulating cooling device according to claim 2, characterized in that: The air inlet of the fan (4) faces the side of the heat exchange plate (3), and the air outlet of the fan (4) faces the lead screw (1).

4. The ball screw circulating cooling device according to claim 1, characterized in that: Multiple sets of liquid inlet channel (8), liquid outlet channel (9) and cooling channel (10) are provided in the nut seat (2), and the cooling channel (10) surrounds the outside of the ball (7).

5. The ball screw circulating cooling device according to claim 1, characterized in that: A sealing ring (12) is installed on the inner side of both ends of the connection between the nut seat (2) and the lead screw (1). A retaining ring (13) is provided on the outer side of the sealing ring (12), and the retaining ring (13) is engaged in the nut seat (2).

6. The ball screw circulating cooling device according to claim 1, characterized in that: The oil filling port sealing plug (11) and the oil filling port on the nut seat (2) are connected by threads, and the oil filling port is located between the balls (7).

7. The ball screw circulating cooling device according to claim 1, characterized in that: The coolant inlet (5) and coolant outlet (6) are connected to an external circulating cooling device.

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