Multi-heat source self-adjusting cooling flow device of machine tool

Abstract

The utility model provides a machine tool multi-heat source self-adjusting cooling flow device. The machine tool multi-heat source self-adjusting cooling flow device comprises a multi-loop connecting shell, a thermostat, a valve, a spring and a connecting rod. When the operation load of a heat source is increased, the temperature of cooling fluid rises, wax in the thermostat is forced to expand, the piston is pushed downwards, the piston pushes the valve to increase the flow, meanwhile, through a connecting rod mechanism, other valves with the relatively low temperature are closed, and the cooling flow of the valves is reduced; the valves are automatically adjusted according to the backflow temperature in different loops, openings of the valves can be automatically adjusted to be enlarged in loops with large heating, and valve openings of other loops with small heating are shrunk through a connecting rod mechanism. When the load is changed, the device can automatically adjust the flow according to the temperature change, and a high-price temperature control system is not needed, so that the cooling benefit is maximized. Through the action mode of the valve and the connecting rod seesaw, the size of the flow opening can be simply, easily and accurately controlled, and corresponding flows can be provided for different heat sources.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling, in particular to a device for adjusting cooling flow rate of a multi-heat source of a machine tool. Background Art

[0002] The spindle motor, transmission mechanism, DD motor, hydraulic oil, cutting water, etc. of the machine tool need to be cooled by the refrigerator, but the cooling requirements of different circuits at different times are not the same. However, the refrigerator is currently still distributed in different circuits with a fixed flow ratio, and the cooling flow cannot be dynamically adjusted according to the heat generation.

[0003] The patent with publication number TWI593501 provides a machine tool constant temperature control system and a flow switching valve. The flow switching valve switches the valve water circuit by means of thermal expansion and contraction, and can control the water circuit to flow back to the storage tank or flow through the cooling compressor for cooling.

[0004] Patent publication number TW202325464A provides a self-adjusting cooling device for machine tools, which uses an electronic proportional valve to control the flow rate and measures the temperature of the machine structure to perform adaptive cooling temperature adjustments; no matter how the operating load of the machine tool changes, the self-adjusting cooling device will compensate the temperature and flow rate of the cooling liquid to a pre-set target, thereby controlling the thermal displacement of the machine tool to maintain a stable state.

[0005] However, these known techniques are too complicated to be improved. Utility Model Content

[0006] In view of this, the main purpose of the utility model is to provide a multi-heat source cooling flow adjustment device for a machine tool, which simplifies the linkage mechanism to automatically adjust the flow ratio of different circuits and improve the overall cooling efficiency.

[0007] To achieve the above-mentioned purpose, the utility model provides a multi-heat source cooling flow adjustment device for a machine tool, comprising a valve seat having four inlet holes, a channel connected to the inlet holes, four valve holes connected to the channel, and an outlet connected to the channel; four thermostats, respectively arranged at the inlet holes of the valve seat; each thermostat has a main body and a piston rod installed on the main body, and the main body can be heated to make the piston rod protrude; four valves, respectively movably arranged at the valve holes of the valve seat; four first springs, respectively pressed between the valve seat and the valves, so that the valves move toward the corresponding inlet holes of the valve seat; four second springs, respectively pressed between the piston rods of the thermostats and the valves; three connecting rods, wherein two ends of one connecting rod are respectively pivotally connected to two valves, two ends of another connecting rod are respectively pivotally connected to another two valves, and two ends of the last connecting rod are respectively pivotally connected to the midpoints of the aforementioned two connecting rods, and the midpoint of the last connecting rod is pivotally connected to the valve seat.

[0008] The valves are pushed by the different displacements of the piston rod of the thermostat, and the displacement of each valve is controlled by a linkage mechanism, so as to achieve a simplified and automatic adjustment of the flow ratio of different circuits.

[0009] Preferably, the valve seat has a seat body, four inlet joints are mounted on the seat body, and the inlet holes are formed in the seat body and the inlet joints.

[0010] Preferably, the valve seat has a seat body, four plugs are installed on the seat body, and the plugs respectively press against the first springs; each valve has a concave part for installing the first spring and a convex part for installing the second spring.

[0011] To achieve the above-mentioned purpose, the utility model provides another multi-heat source cooling flow adjustment device for a machine tool, comprising a valve seat having three inlet holes, a channel connected to the inlet holes, three valve holes connected to the channel, and an outlet connected to the channel; three thermostats, respectively disposed at the inlet holes of the valve seat; each thermostat has a main body and a piston rod installed on the main body, and the main body can be heated to make the piston rod protrude; three valves, respectively movably disposed at the valve holes of the valve seat; three first springs, respectively abutting between the valve seat and the valves to move the valves toward the corresponding inlet holes of the valve seat; three second springs, respectively abutting between the piston rods of the thermostats and the valves; two connecting rods, one connecting rod having two ends respectively pivotally connected to two adjacent valves, the other connecting rod having one end pivotally connected to the other valve and the other end pivotally connected to the midpoint of the aforementioned connecting rod, and the midpoint of the other connecting rod pivotally connected to the valve seat.

[0012] The valves are pushed by the different displacements of the piston rod of the thermostat, and the displacement of each valve is controlled by a linkage mechanism, so as to achieve a simplified and automatic adjustment of the flow ratio of different circuits.

[0013] Preferably, the valve seat has a seat body, a three-inlet connector is installed on the seat body, and the inlet holes are formed in the seat body and the three-inlet connectors.

[0014] Preferably, the valve seat has a seat body, three plugs are installed on the seat body, and the plugs respectively press against the first springs; each valve has a concave part for installing the first spring and a convex part for installing the second spring.

[0015] To achieve the above-mentioned purpose, the utility model provides another multi-heat source cooling flow adjustment device for a machine tool, comprising a valve seat having two inlet holes, a channel connecting the inlet holes, two valve holes connecting the channel, and an outlet connecting the channel; two thermostats, respectively disposed at the inlet holes of the valve seat; each thermostat has a main body and a piston rod installed on the main body, and the main body can be heated to cause the piston rod to protrude; two valves, respectively movably disposed at the valve holes of the valve seat; two first springs, respectively abutting between the valve seat and the valves, so that the valves move toward the corresponding inlet holes of the valve seat; two second springs, respectively abutting between the piston rods of the thermostats and the valves; a connecting rod, the two ends of the connecting rod are pivotally connected to the two valves, and the midpoint of the connecting rod is pivotally connected to the valve seat.

[0016] The valves are pushed by the different displacements of the piston rod of the thermostat, and the displacement of each valve is controlled by a linkage mechanism, so as to achieve a simplified and automatic adjustment of the flow ratio of different circuits.

[0017] Preferably, the valve seat has a seat body, two inlet joints are mounted on the seat body, and the inlet holes are formed in the seat body and the inlet joints.

[0018] Preferably, the valve seat has a seat body, two plugs are installed on the seat body, and the plugs respectively press against the first springs; each valve has a concave part for installing the first spring and a convex part for installing the second spring.

[0019] The detailed structure, features or usage of the multi-heat source cooling flow rate adjustment device for machine tools provided by the present invention will be described in the following specific embodiments. However, those skilled in the art of the present invention should understand that the detailed description and the specific embodiments listed for implementing the present invention are only used to illustrate the present invention and are not used to limit the protection scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a three-dimensional combination diagram of a preferred embodiment of the utility model.

[0022] Figure 2 It is a combined cross-sectional view of a preferred embodiment of the utility model.

[0023] Figure 3 This is a three-dimensional assembly diagram of some components of a preferred embodiment of the utility model.

[0024] Figure 4 This is a cross-sectional view of a valve seat according to a preferred embodiment of the utility model.

[0025] Figure 5This is a cross-sectional view of a thermostat according to a preferred embodiment of the present utility model.

[0026] Figure 6 This is a cross-sectional view of a valve according to a preferred embodiment of the utility model.

[0027] Figure 7 Similar Figure 2 , showing an action status.

[0028] Figure 8 Similar Figure 2 , showing another action status.

[0029] Fig. 9 This is a three-dimensional assembly diagram of some components of another preferred embodiment of the utility model.

[0030] Fig.10 This is a three-dimensional assembly diagram of some components of another preferred embodiment of the utility model.

[0031] In the above drawings, the meanings of the reference numerals are as follows:

[0032] 10. Valve seat;

[0033] 11. Base body;

[0034] 12. Entrance hole;

[0035] 13. Channel;

[0036] 14. Valve hole;

[0037] 15. Exit hole;

[0038] 16. Insert the connector;

[0039] 17. Plug;

[0040] 18. Connector;

[0041] 20. Thermostat;

[0042] 21. Subject;

[0043] 22. Piston rod;

[0044] 30. Valve;

[0045] 31. Body;

[0046] 32. Concave;

[0047] 33. Convex part;

[0048] 40. First spring;

[0049] 50. Second spring;

[0050] 60. Connecting rod. DETAILED DESCRIPTION

[0051] First of all, it should be noted that the technical features provided by the utility model are not limited to the specific structures, uses and applications described in the embodiments. The terms used in the description are all schematic descriptive terms that can be understood by those skilled in the art. The directional descriptive terms such as "front, top, bottom, back, left, right, top, bottom, inside, and outside" mentioned in this specification are only schematic descriptive terms based on the normal use direction, and are not intended to limit the scope of the claims of this disclosure.

[0052] See also Figures 1 to 8 A preferred embodiment of the utility model provides a multi-heat source cooling flow adjustment device 1 for a machine tool, comprising a valve seat 10, four thermostats 20, four valves 30, four first springs 40, four second springs 50, and three connecting rods 60.

[0053] The valve seat 10 has a seat body 11, four inlet joints 16, four plugs 17, and an outlet joint 18. The seat body 11 has four inlet holes 12, a channel 13, four valve holes 14, and an outlet hole 15. The channel 13 is connected to each inlet hole 12, the valve hole 14 is connected to the channel 13, and the outlet hole 15 is connected to the channel 13. The inlet joint 16 is installed in the inlet hole 12, and the inlet hole 12 is also extended inside the inlet joint 16. The inlet joint 16 is connected to a heat source pipe (not shown in the figure), the plug 17 is installed in the valve hole 14 of the seat body 11, the outlet joint 18 is installed in the outlet hole 15, and the outlet joint 18 is connected to a cooling machine (not shown in the figure).

[0054] The thermostat 20 is respectively arranged at each inlet hole 12 of the valve seat 10; each thermostat 20 has a main body 21 and a piston rod 22 installed on the main body 21. The interior of the main body 21 is filled with a material with a high expansion coefficient. When the main body 21 contacts a cooling fluid with a high temperature, the material inside the main body 21 expands and pushes the piston rod 22 to protrude outward. Among them, the main body 21 is installed in the inlet hole 12 of the valve seat 10, and the piston rod 22 can be telescopically displaced relative to the main body 21. The utility model is not limited to various known thermostats 20.

[0055] The valve 30 is respectively disposed in each valve hole 14 of the valve seat 10. The valve 30 has a body 31, a recess 32, and a protrusion 33. The body 31 is movably disposed in each valve hole 14 of the valve seat 10, the recess 32 is located at one end of the body 31 and faces the plug 17 of the valve seat 10, and the protrusion 33 is located at the other end of the body 31 and faces the piston rod 22 of the thermostat 20.

[0056] The first spring 40 is respectively pressed between the valve seat 10 and each valve 30 to move each valve 30 toward the corresponding inlet hole 12. One end of the first spring 40 is mounted on the plug 17 of the valve seat 10, and the other end is mounted on the concave portion 32 of the valve 30.

[0057] The second spring 50 is disposed between the piston rod 22 of each thermostat 20 and each valve 30 . One end of the second spring 50 is mounted on the convex portion 33 of the valve 30 .

[0058] Two ends of one connecting rod 60 are respectively pivoted to two valves 30 on one side, two ends of another connecting rod 60 are respectively pivoted to two valves 30 on the other side, and two ends of the last connecting rod 60 are respectively pivoted to the midpoints of the aforementioned two connecting rods 60, and the midpoint of the last connecting rod 60 is pivoted to the valve seat 10.

[0059] The expansion inside the thermostat 20 forces the piston rod 22 to push the valve 30 downward, thereby increasing the cooling water flow rate. At the same time, when the valve 30 is pushed downward, the other valves 30 are also reduced through the linkage mechanism. The valve 30 linkage mechanism is composed of an array of counter-stroke connecting rods 60 mechanisms. The product of the control point and the force arm is the same for each group. In the isothermal state, each control point is subjected to equal force, and the valve 30 opening is also the same. When the temperature difference changes, the thermostat 20 applies force to the valve 30 and the connecting rod 60 to change the equilibrium state, and the valve 30 opening size (flow rate) changes, thereby automatically adjusting the flow ratio of different circuits and improving the overall cooling efficiency.

[0060] One of the actions of this embodiment is as follows: Figure 7 The coolant temperature received by one of the thermostats 20 is higher, while the coolant temperature received by the other three thermostats 20 is lower. The piston rod 22 corresponding to the higher temperature extends outward longer, so the corresponding valve 30 moves downward, and the gap between the valve 30 and the inlet hole 12 of the valve seat 10 is enlarged, resulting in a larger flow rate.

[0061] Another action of this embodiment, such as Figure 8 The coolant temperature received by two thermostats 20 is higher, while the coolant temperature received by the other two thermostats 20 is lower. The piston rod 22 with the higher temperature extends outward longer, so the corresponding valve 30 moves downward, and the gap between the two valves 30 and the inlet hole 12 of the valve seat 10 is enlarged, resulting in a larger flow rate.

[0062] This embodiment uses the seesaw action of the valve 30 and the connecting rod 60 to simply, easily and accurately control the flow opening size, so that different heat sources provide corresponding flows, thereby achieving the purpose of more uniform cooling.

[0063] That is, when the operating load changes, the cooling water temperature of the heat source rises, causing the wax inside the thermostat to expand and push the piston down. The piston pushes the valve to increase the flow rate. At the same time, through the connecting rod mechanism, other valves with relatively low temperatures are closed to reduce their cooling flow rate, thereby improving the overall cooling efficiency of the machine tool.

[0064] like Fig. 9As shown, another preferred embodiment of the utility model is a device for adjusting cooling flow rate of a machine tool with multiple heat sources, which is similar to the above-mentioned embodiment, except that the thermostat 20, the valve 30, the first spring 40, and the second spring 50 are all changed to three, and one end of the connecting rod 60 pivotally connected to the valve seat 10 is directly pivotally connected to another valve 30. It can still be operated according to the flow rate of the heat source, and the purpose of the utility model is also achieved.

[0065] like Fig.10 As shown, another preferred embodiment of the utility model is similar to the above-mentioned embodiment, except that the thermostat 20, valve 30, first spring 40, and second spring 50 are all changed to two, and the two ends of the connecting rod 60 pivotally connected to the valve seat 10 are directly pivotally connected to the two valves 30. It can still be operated according to the flow size of the heat source, and the purpose of the utility model is also achieved. The midpoint of the connecting rod 60 is pivotally connected to the valve seat 10.

[0066] The cooling system can use any two of the machine tool multi-heat source cooling flow regulating devices as described above, wherein the outlet joint 18 and outlet hole 15 of one machine tool multi-heat source cooling flow regulating device can be connected to any inlet joint 16 and inlet hole 12 of the valve seat 10 of another machine tool multi-heat source cooling flow regulating device.

[0067] In summary, the multi-heat source cooling flow rate adjusting device for machine tools of the present invention has indeed achieved the purpose of the present invention through the above implementation description.

Claims

1. A device for adjusting cooling flow rate of a machine tool with multiple heat sources, characterized in that: Include: A valve seat having four inlet holes, a channel connected to the inlet holes, four valve holes connected to the channel, and an outlet hole connected to the channel; Four thermostats are respectively arranged at the inlet holes of the valve seat; each thermostat has a main body and a piston rod installed on the main body, and the main body is heated to make the piston rod protrude; Four valves are movably disposed on the valve holes of the valve seat; four first springs, respectively pressing against between the valve seat and each valve, so that each valve moves toward the corresponding inlet hole of the valve seat; four second springs, respectively pressed between the piston rod of each thermostat and each valve; The three connecting rods have two connecting rods with two ends pivotally connected to two valves, another connecting rod with two ends pivotally connected to another two valves, and the last connecting rod with two ends pivotally connected to the midpoints of the two connecting rods, and the midpoint of the last connecting rod is pivotally connected to the valve seat.

2. The device for adjusting cooling flow rate of a machine tool with multiple heat sources according to claim 1, characterized in that: The valve seat comprises a seat body, four inlet joints are installed on the seat body, and the inlet holes are formed in the seat body and the inlet joints.

3. The device for adjusting cooling flow rate of a machine tool with multiple heat sources according to claim 1, characterized in that: The valve seat has a seat body, four plugs are installed on the seat body, and the plugs respectively press against the first springs; each valve has a concave part for installing the first spring and a convex part for installing the second spring.

4. A device for adjusting cooling flow rate of a machine tool with multiple heat sources, characterized in that: Include: A valve seat having three inlet holes, a channel connected to the inlet holes, three valve holes connected to the channel, and an outlet hole connected to the channel; Three thermostats are respectively arranged at the inlet holes of the valve seat; each thermostat has a main body and a piston rod installed on the main body, and the main body is heated to make the piston rod protrude; three valves, movably disposed at the valve holes of the valve seat; three first springs, respectively pressing against between the valve seat and each valve, so that each valve moves toward the corresponding inlet hole of the valve seat; three second springs, respectively pressed between the piston rods of the thermostats and the valves; Two connecting rods, one connecting rod has two ends pivotally connected to the two adjacent valves, the other connecting rod has one end pivotally connected to the other valve and the other end pivotally connected to the midpoint of the connecting rod, and the midpoint of the other connecting rod is pivotally connected to the valve seat.

5. The device for adjusting cooling flow rate of a machine tool with multiple heat sources according to claim 4, characterized in that: The valve seat comprises a seat body, a three-inlet joint is installed on the seat body, and each inlet hole is formed in the seat body and each inlet joint.

6. The device for adjusting cooling flow rate of a machine tool with multiple heat sources according to claim 4, characterized in that: The valve seat has a seat body, three plugs are installed on the seat body, and the plugs respectively press against the first springs; each valve has a concave part for installing the first spring and a convex part for installing the second spring.

7. A device for adjusting cooling flow rate of a machine tool with multiple heat sources, characterized in that: Include: A valve seat having two inlet holes, a channel connecting the inlet holes, two valve holes connecting the channel, and an outlet hole connecting the channel; Two thermostats are respectively arranged at the inlet holes of the valve seat; each thermostat has a main body and a piston rod installed on the main body, and the main body is heated to make the piston rod protrude; Two valves are movably disposed on the valve holes of the valve seat; Two first springs are respectively pressed between the valve seat and each valve to move each valve toward the corresponding inlet hole of the valve seat; Two second springs are respectively pressed between the piston rod of each thermostat and each valve; A connecting rod, the two ends of the connecting rod are pivotally connected to the two valves, and the midpoint of the connecting rod is pivotally connected to the valve seat.

8. The device for adjusting cooling flow rate of a machine tool with multiple heat sources according to claim 7, characterized in that: The valve seat comprises a seat body, two inlet joints are mounted on the seat body, and each inlet hole is formed in the seat body and each inlet joint.

9. The device for adjusting cooling flow rate of a machine tool with multiple heat sources according to claim 7, characterized in that: The valve seat has a seat body, two plugs are installed on the seat body, and the plugs respectively press against the first springs; each valve has a concave part for installing the first spring and a convex part for installing the second spring.

Images