Hydraulic oil cooling device for hydraulic pump station of molding machine

Abstract

The invention discloses a hydraulic oil cooling device for a hydraulic pump station of a molding machine, which belongs to the technical field of hydraulic equipment and comprises a hydraulic pump station structure and a heat guiding and cooling structure. The heat guiding and cooling structure comprises a forced refrigeration module and a tentacle assembly. A liquid refrigerant medium part in the sweating cooling part absorbs oil temperature heat and then is heated and evaporated, the evaporated liquid refrigerant medium part is liquefied after making contact with the cold inner wall of the upper portion of an inner cavity of the hollow heat guiding rod, slides down along the inner wall of the hollow heat guiding rod and then is absorbed by the fiber liquid absorption layer again, and when the oil temperature of hydraulic oil exceeds the preset critical upper limit, the liquid refrigerant medium part is heated and evaporated. In the process that a thermal expansion and cold contraction dielectric layer in the thermal sensing piece is heated and expanded to drive a forced elastic piece to elastically protrude outwards and drive a retraction mechanism to retract, two excitation contact terminals are made to make contact, and a signal emission unit is triggered to send an opening control signal to a hydraulic pump station structure; and then the hydraulic pump station structure controls the forced refrigeration module to carry out forced cooling treatment on the hydraulic oil with the too high temperature.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic equipment, and more specifically, to a hydraulic oil cooling device for a hydraulic pump station of a molding machine. Background Technique

[0002] As is well known, a hydraulic pump station of a molding machine is mainly a device that provides hydraulic power support for the molding machine. It is a hydraulic source device composed of a hydraulic pump, a driving motor, a fuel tank and other parts. The hydraulic pump station of the molding machine uses hydraulic oil as the circulating oil.

[0003] When the hydraulic pump station of the molding machine is in operation, the hydraulic oil inside it is under high pressure, and the temperature of the hydraulic oil is prone to be too high. The hydraulic oil in the high-temperature state not only easily transfers the temperature to the inside of the molding machine and damages the components inside the molding machine, but also, the too high temperature of the hydraulic oil will accelerate its oxidation process and produce deposits such as sludge. These deposits will block the small holes and gaps in the hydraulic system of the hydraulic pump station of the molding machine, affect the normal operation of the hydraulic system of the hydraulic pump station, and even cause the failure of its components, affecting the stable operation of the equipment.

[0004] In view of this, we propose a hydraulic oil cooling device for a hydraulic pump station of a molding machine. Summary of the Invention

[0005] Technical Problem to be Solved: The purpose of this application is to provide a hydraulic oil cooling device for a hydraulic pump station of a molding machine, which solves the technical problems proposed in the above background technique.

[0006] Technical Solution: The technical solution of this application provides a hydraulic oil cooling device for a hydraulic pump station of a molding machine, including a hydraulic pump station structure and a heat conduction and cooling structure arranged on the hydraulic pump station structure; The heat conduction and cooling structure includes a forced refrigeration module that can perform forced cooling treatment on the high-temperature hydraulic oil in the hydraulic pump station and is electrically connected to the hydraulic pump station structure, and several tentacle components; The tentacle component includes an upper cover part that contacts the hydraulic pump station structure, and several tentacle units are evenly arranged on the upper cover part; The tentacle unit includes a hollow heat conduction rod inserted into the upper cover part, and the bottom end of the hollow heat conduction rod extends into the interior of the hydraulic pump station structure and contacts the hydraulic oil, and the top end extends out of the top of the upper cover part and contacts the atmosphere. A sweating cooling part is arranged on the inner side wall of the cavity of the hollow heat conduction rod. A heat sensing part is also arranged in the cavity of the hollow heat conduction rod. The heat sensing part includes a thermal expansion and contraction medium layer and a forced elastic piece, and the thermal expansion and contraction medium layer is filled inside the sensing part. A cylindrical breathable mesh cover is sleeved outside the heat sensing part; A speed-up cooling member is provided at the position corresponding to the side wall of the hollow heat conduction rod and the pressing elastic piece. The speed-up cooling member includes a retracting mechanism that is telescopically movable and made of heat-insulating material, and a channel structure provided at the top end of the hollow heat conduction rod. A reserved notch is opened at the position corresponding to the retracting mechanism on the cylindrical breathable mesh cover. The fixed end of the retracting mechanism is connected to the hollow heat conduction rod, and when the retracting mechanism is in the initial extended state, the end of its free end abuts against the side wall surface of the pressing elastic piece; The retracting mechanism includes insulating coolant filled inside it and a drainage pipeline, and the retracting mechanism is connected to the channel structure through the drainage pipeline, and the drainage pipeline is also filled with insulating coolant; A synchronous control module that is electrically connected to the hydraulic pump station structure and is located inside the retracting mechanism is also provided on one of the tentacle units in one of the tentacle assemblies; The synchronous control module includes a signal transmitting unit, two excitation contact terminals arranged relatively, and an elastic slider connected to the free end of the retracting mechanism, and one of the excitation contact terminals is connected to the fixed end in the retracting mechanism, and the other excitation contact terminal is connected to the elastic slider; When the two excitation contact terminals are in contact, the signal transmitting unit is triggered to send an opening control signal to the hydraulic pump station structure.

[0007] As an alternative solution to the technical solution of this application document, the sweating cooling member includes a layer of fiber liquid-absorbing layer connected to the inner cavity of the hollow heat conduction rod, and a liquid refrigerant medium part is absorbed inside the fiber liquid-absorbing layer.

[0008] As an alternative solution to the technical solution of this application document, the heat sensing member includes an inner-connected heat conduction cylinder shell provided in the inner cavity of the hollow heat conduction rod and having its bottom end connected to the bottom wall of the inner cavity of the hollow heat conduction rod; A thermal expansion and contraction medium layer is filled in the inner cavity of the inner-connected heat conduction cylinder shell; An elastic piece groove adapted to the pressing elastic piece is opened on the side wall of the inner-connected heat conduction cylinder shell, and the pressing elastic piece is connected in the elastic piece groove; The cylindrical breathable mesh cover is sleeved outside the inner-connected heat conduction cylinder shell.

[0009] As an alternative solution to the technical solution of this application document, the retracting mechanism includes a heat-insulating bottom cylinder, and a heat-insulating end cover is hermetically connected to the open end of the heat-insulating bottom cylinder; A cross bar is slidably inserted into the end of the heat-insulating bottom cylinder away from the heat-insulating end cover, and one end of the cross bar extends into the inner cavity of the heat-insulating bottom cylinder and is connected to a sealing plug seat that seals and slides in the inner cavity of the heat-insulating bottom cylinder. The other end of the cross bar extends out of the end of the heat-insulating bottom cylinder and is connected to an arc-shaped abutting plate; A first return spring connected between the sealing plug seat and the heat-insulating end cover is also provided in the inner cavity of the heat-insulating bottom cylinder; An opening is also opened at the end of the heat-insulating bottom cylinder away from the heat-insulating end cover.

[0010] As an alternative solution to the technical solution of this application document, the heat-insulating bottom cylinder is connected to the side wall of the hollow heat-conducting rod; When the indentation mechanism is in the initial extended state, the first return spring is in a relaxed state, and the arc-shaped abutting plate passes through the reserved notch and abuts against the side wall surface of the forced elastic piece.

[0011] As an alternative solution to the technical solution of this application document, the channel structure includes an annular treatment groove and an exhaust channel arranged inside the top end of the hollow heat-conducting rod; An annular plug body is hermetically slidable in the inner cavity of the annular treatment groove. A second return spring is also arranged in the inner cavity of the annular treatment groove. One end of the second return spring is connected to the bottom of the annular plug body, and the other end is connected to the bottom wall of the annular treatment groove; One end of the exhaust channel is communicated with the bottom end of the annular treatment groove, and the other end penetrates through the side wall of the hollow heat-conducting rod and is communicated with the atmosphere.

[0012] As an alternative solution to the technical solution of this application document, one end of the drainage pipeline is connected to the heat-insulating end cover and is communicated with the inner cavity of the heat-insulating bottom cylinder, and the other end penetrates into the hollow heat-conducting rod and is communicated with the top end of the annular treatment groove.

[0013] As an alternative solution to the technical solution of this application document, the upper cover member includes an installation base, and a heat-conducting base integrally formed with and connected to the bottom of the installation base; A heat-conducting gasket is also connected to the bottom of the installation base, and the heat-conducting gasket is annularly arranged on the outer periphery of the heat-conducting base; The hollow heat-conducting rod is inserted and fixed to the integrally formed structure composed of the installation base and the heat-conducting base.

[0014] As an alternative solution to the technical solution of this application document, the hydraulic pump station structure includes a molding machine hydraulic pump station main body, and a pump station controller is arranged on the molding machine hydraulic pump station main body; The forced refrigeration module includes a refrigeration compressor unit and a heat-conducting shell installed and fixed in the inner cavity of the oil tank of the molding machine hydraulic pump station main body. An evaporator is arranged inside the heat-conducting shell. One end of the evaporator is connected to the input end of the refrigeration compressor unit, and the other end is connected to the output end of the refrigeration compressor unit; A top port adapted to the heat-conducting base is opened at the position corresponding to the oil tank at the top of the molding machine hydraulic pump station main body. The heat-conducting base is hermetically and movably inserted into the top port, and the installation base is fixedly connected to the molding machine hydraulic pump station main body; The bottom end of the hollow heat-conducting rod extends into the oil tank of the molding machine hydraulic pump station main body and contacts the hydraulic oil.

[0015] As an alternative solution to the technical solution of this application document, the signal transmitting unit includes a control circuit board connected to one end of the heat insulation end cover close to the opening of the heat insulation bottom cylinder, and a wireless signal transmitter is provided on the control circuit board; The elastic slider includes a pulling slide seat slidably connected to the inner cavity of the heat insulation bottom cylinder. A spring is provided on the side of the pulling slide seat away from the heat insulation end cover, and the spring is connected between the pulling slide seat and the sealing plug seat; One of the excitation contacts is connected to the heat insulation end cover in the retraction mechanism, and the other excitation contact is connected to the pulling slide seat in the elastic slider; When the two excitation contacts come into contact, it triggers the control circuit board to control the wireless signal transmitter to turn on, and then the wireless signal transmitter sends an on control signal to the pump station controller.

[0016] Beneficial effects: One or more of the technical solutions provided in the technical solution of this application have at least the following technical effects or advantages: 1. After the oil temperature of the hydraulic oil in the hydraulic pump station structure is continuously transmitted to the sweating cooling member in the tentacle unit, the liquid refrigerant medium part in the sweating cooling member absorbs the heat of the oil temperature and evaporates when heated. When the evaporated liquid refrigerant medium part contacts the colder inner wall of the upper part of the inner cavity of the hollow heat conduction rod and liquefies, and then slides down along the inner wall of the hollow heat conduction rod and is absorbed by the fiber liquid absorption layer again, so as to realize the passive circulation cooling treatment of the hydraulic oil.

[0017] 2. When the oil temperature of the hydraulic oil exceeds the preset critical upper limit, during the process that the thermal expansion and contraction medium layer in the thermal sensing member expands due to heat and drives the forced moving piece to elastically protrude outward and drives the retraction mechanism to retract, the two excitation contacts come into contact, and it triggers the signal transmitting unit to send an on control signal to the pump station controller in the hydraulic pump station structure. Then, the pump station controller in the hydraulic pump station structure controls the forced refrigeration module to turn on and perform active forced cooling treatment on the hydraulic oil with too high temperature, so that it can be quickly cooled down, which helps to improve the operation stability of the molding machine hydraulic pump station.

[0018] 3. During the process that the thermal expansion and contraction medium layer in the thermal sensing member expands due to heat and drives the forced moving piece to elastically protrude outward and drives the cross bar in the retraction mechanism to retract, the sealing plug seat that moves synchronously with the cross bar continuously injects the insulating coolant into the channel structure at the top of the hollow heat conduction rod through the drainage pipeline, so that the temperature difference between the two ends of the hollow heat conduction rod increases, and the heat exchange efficiency of the tentacle unit is enhanced. As a result, when the evaporated liquid refrigerant medium part contacts the inner wall of the hollow heat conduction rod, its heat can be taken away more quickly, and it can be quickly liquefied, so as to enhance the sweating cooling efficiency of the sweating cooling member, and further help to improve the cooling efficiency of the hydraulic oil.

[0019] 4. When the thermal expansion and contraction medium layer in the thermal sensing component is heated and expands to drive the elastic protrusion of the forced moving elastic piece outward, the space for the activity of the liquid refrigerant medium part that can be evaporated inside the hollow heat conduction rod is further occupied, optimizing the internal space of the hollow heat conduction rod. After the forced refrigeration module is turned on, the cold source is continuously transmitted to the upper cover part through the heat conduction gasket, and then quickly transmitted from the upper cover part to the upper end surface of the hollow heat conduction rod, continuously dissipating heat from the insulating cooling liquid in the channel structure. This helps to further increase the temperature difference between the two ends of the hollow heat conduction rod. With the superposition of the above effects, the evaporated liquid refrigerant medium part can reach the upper part of the inner cavity of the hollow heat conduction rod more quickly and rapidly contact and liquefy with the relatively cold inner wall of the hollow heat conduction rod, which helps to further enhance the cooling effect on the hydraulic oil, shorten the cooling time of the hydraulic oil, enable the temperature of the hydraulic oil to quickly drop below the preset critical upper limit, and thus help to shorten the opening time of the forced refrigeration module and reduce the energy consumption of equipment operation.

[0020] 5. Through the insulating cooling liquid located in the indentation mechanism, it is also possible to achieve heat dissipation and cooling treatment for the contact terminals and the signal emission unit when the two contact terminals are connected. This not only helps to extend the service life of the synchronous control module but also helps to improve the operating stability of the synchronous control module. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of this application.

[0022] Figure 2 For this application Figure 1 A partial enlarged schematic diagram of part A.

[0023] Figure 3 It is a side view of the overall structure of this application.

[0024] Figure 4 It is a cross-sectional view of the fuel tank in the main body of the molding machine hydraulic pump station of this application.

[0025] Figure 5 For this application Figure 4 A partial enlarged schematic diagram of part B.

[0026] Figure 6 It is a cross-sectional view of the heat conduction and cooling structure in this application.

[0027] Figure 7 It is a cross-sectional view of the execution unit in this application.

[0028] Figure 8 For this application Figure 7 A partial enlarged schematic diagram of part D.

[0029] Figure 9 For this application Figure 7Partial enlarged schematic diagram of part E.

[0030] Figure 10 This application Figure 7 Partial enlarged schematic diagram of part F.

[0031] Figure 11 This application Figure 6 Partial enlarged schematic diagram of part C.

[0032] Figure 12 This application Figure 11 Partial enlarged schematic diagram of part G.

[0033] Explanation of reference numerals in the figure: 101, main body of the molding machine hydraulic pump station; 102, pump station controller; 201, refrigeration compressor unit; 202, installation base; 203, hollow heat conduction rod; 204, heat conduction gasket; 205, heat conduction housing; 206, evaporator; 207, heat conduction base; 208, heat insulation end cover; 209, internal heat conduction cylinder shell; 210, thermal expansion and contraction medium layer; 211, cylindrical ventilation mesh cover; 212, pressing elastic piece; 213, fiber liquid absorption layer; 214, arc-shaped abutting plate; 215, heat insulation bottom cylinder; 216, sealing plug seat; 217, insulating coolant; 218, drainage pipeline; 219, annular plug body; 220, annular treatment tank; 221, pulling sliding seat; 222, spring; 223, excitation contact terminal; 224, control circuit board; 225, wireless signal transmitter. Specific embodiments

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0035] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of this application.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] Referring to Figures 1 to 12 , the embodiment of the present application provides a hydraulic oil cooling device for a molding machine hydraulic pump station, including a hydraulic pump station structure and a heat conduction and cooling structure arranged on the hydraulic pump station structure; The heat conduction and cooling structure includes a forced refrigeration module that can perform forced cooling treatment on the high-temperature hydraulic oil in the hydraulic pump station and is electrically connected to the hydraulic pump station structure, and several tentacle assemblies; The tentacle assembly includes an upper cover part in contact with the hydraulic pump station structure, and several tentacle units are evenly arranged on the upper cover part; The tentacle unit includes a hollow heat conduction rod 203 inserted into the upper cover part. The bottom end of the hollow heat conduction rod 203 extends into the interior of the hydraulic pump station structure and contacts the hydraulic oil, and the top end extends out from the top of the upper cover part and contacts the atmosphere. A sweating cooling part is arranged on the inner cavity side wall of the hollow heat conduction rod 203. A heat sensing part is also arranged in the inner cavity of the hollow heat conduction rod 203. The heat sensing part includes a thermal expansion and contraction medium layer 210 and a pressing elastic piece 212. The thermal expansion and contraction medium layer 210 is filled inside the sensing part. A cylindrical breathable mesh cover 211 is also sleeved outside the heat sensing part. Among them, the thermal expansion and contraction medium layer 210 is made of paraffin material, and the phase change temperature of the above paraffin material is: 55 - 65 °C; A speed-up cooling part is arranged at the position corresponding to the side wall of the hollow heat conduction rod 203 and the pressing elastic piece 212. The speed-up cooling part includes a retracting mechanism that can be telescopically moved and is made of a heat-insulating material, and a channel structure arranged at the top end of the hollow heat conduction rod 203. A reserved notch is opened at the position corresponding to the cylindrical breathable mesh cover 211 and the retracting mechanism. The fixed end of the retracting mechanism is connected to the hollow heat conduction rod 203, and when the retracting mechanism is in the initial extended state, the end of its free end abuts against the side wall surface of the pressing elastic piece 212; The retracting mechanism includes an insulating coolant 217 filled inside it and a drainage pipeline 218, and the retracting mechanism is connected to the channel structure through the drainage pipeline 218. The drainage pipeline 218 is also filled with the insulating coolant 217. Among them, the drainage pipeline 218 is made of a heat-insulating material; A synchronous control module that is electrically connected to the hydraulic pump station structure and is located inside the retracting mechanism is also arranged on one tentacle unit in one of the tentacle assemblies; The synchronization control module includes a signal transmitting unit, two trigger terminals 223 arranged oppositely, and an elastic slider connected to the free end of the indentation mechanism. One of the trigger terminals 223 is connected to the fixed end in the indentation mechanism, and the other trigger terminal 223 is connected to the elastic slider; When the two trigger terminals 223 come into contact, the signal transmitting unit is triggered to send an opening control signal to the hydraulic pump station structure.

[0038] Refer to Figures 1 to 4 , Figure 6 ,In an embodiment of the present application, a hydraulic oil cooling device for a molding machine hydraulic pump station is provided. The upper cover member includes a mounting base 202, and a heat-conducting base 207 integrally formed and connected to the bottom of the mounting base 202; A heat-conducting gasket 204 is further connected to the bottom of the mounting base 202, and the heat-conducting gasket 204 is disposed around the outer periphery of the heat-conducting base 207; The hollow heat-conducting rod 203 is inserted and fixed on the integrally formed structure composed of the mounting base 202 and the heat-conducting base 207.

[0039] Refer to Figures 1 to 6 ,In an embodiment of the present application, a hydraulic oil cooling device for a molding machine hydraulic pump station is provided. The hydraulic pump station structure includes a molding machine hydraulic pump station main body 101, and a pump station controller 102 is provided on the molding machine hydraulic pump station main body 101; The forced refrigeration module includes a refrigeration compressor unit 201 and a heat-conducting housing 205 installed and fixed inside the fuel tank cavity of the molding machine hydraulic pump station main body 101. An evaporator 206 is provided inside the heat-conducting housing 205. One end of the evaporator 206 is connected to the input end of the refrigeration compressor unit 201, and the other end is connected to the output end of the refrigeration compressor unit 201; At the position corresponding to the fuel tank at the top of the molding machine hydraulic pump station main body 101, a top port adapted to the heat-conducting base 207 is opened. The heat-conducting base 207 is hermetically and movably inserted into the top port, and the mounting base 202 is fixedly connected to the molding machine hydraulic pump station main body 101; The bottom end of the hollow heat-conducting rod 203 extends into the fuel tank inside the molding machine hydraulic pump station main body 101 and contacts the hydraulic oil.

[0040] Among them, a condenser, a compressor, a condenser, and a capillary tube are respectively provided inside the refrigeration compressor unit 201. Among them, one end of the evaporator 206 is connected to the output end of the capillary tube in the refrigeration compressor unit 201, and the other end is connected to the input end of the compressor in the refrigeration compressor unit 201; The high-pressure refrigerant inside the pipeline of the condenser flows from the output end of the condenser pipeline into the capillary tube through the input end of the capillary tube. After passing through the pressure reduction treatment of the capillary tube, it is then transported into the pipeline of the evaporator 206. After the pressure reduction treatment, the boiling point of the refrigerant decreases when it flows into the interior of the evaporator pipeline, making it easier for the refrigerant located inside the evaporator pipeline to absorb heat and evaporate, and continuously absorbing the heat of the hydraulic oil, thereby realizing the cooling treatment of the high-temperature hydraulic oil. The refrigerant flowing out of the evaporator 206 then enters the compressor. After the compressor boosts the pressure of the refrigerant, it then flows into the pipeline of the condenser. After that, the refrigerant flows from the pipeline of the condenser into the capillary tube, forming a cycle refrigeration effect.

[0041] Referring to Figures 6 to 10 , an embodiment of the present application provides a hydraulic oil cooling device for a molding machine hydraulic pump station. The sweating cooling member includes a layer of fiber liquid absorption layer 213 connected to the inner cavity of the hollow heat conduction rod 203. The fiber liquid absorption layer 213 internally absorbs a liquid refrigerant medium part, and the liquid refrigerant medium part is preferably liquid alcohol. Among them, the fiber liquid absorption layer 213 is made of a fiber material with moisture absorption performance.

[0042] After the oil temperature of the hydraulic oil in the hydraulic pump station structure is continuously transmitted to the sweating cooling member in the tentacle unit, the liquid refrigerant medium part in the sweating cooling member absorbs the heat of the oil temperature and evaporates when heated. When the evaporated liquid refrigerant medium part contacts the colder inner wall of the upper part of the inner cavity of the hollow heat conduction rod 203 and liquefies, it slides down along the inner wall of the hollow heat conduction rod 203 and is then absorbed by the fiber liquid absorption layer 213 again, thereby realizing the passive circulation cooling treatment of the hydraulic oil.

[0043] Referring to Figures 6 to 9 , an embodiment of the present application provides a hydraulic oil cooling device for a molding machine hydraulic pump station. The heat sensing member includes an inner connecting heat conduction cylinder shell 209 arranged in the inner cavity of the hollow heat conduction rod 203 and having its bottom end connected to the bottom wall of the inner cavity of the hollow heat conduction rod 203; The thermal expansion and contraction medium layer 210 is filled in the inner cavity of the inner connecting heat conduction cylinder shell 209; The side wall of the inner connecting heat conduction cylinder shell 209 is provided with a spring piece groove adapted to the pressing spring piece 212, and the pressing spring piece 212 is connected in the spring piece groove; The cylindrical breathable mesh cover 211 is sleeved outside the inner connecting heat conduction cylinder shell 209.

[0044] When the temperature of the hydraulic oil exceeds the preset critical upper limit, during the process that the thermal expansion and contraction medium layer 210 in the thermal sensing component is heated and expands to drive the pressing elastic piece 212 to elastically protrude outwards and drive the retracting mechanism to retract, the two excitation contact terminals 223 are brought into contact, and the signal transmitting unit is triggered to send an opening control signal to the pump station controller 102 in the hydraulic pump station structure. Then, the pump station controller 102 in the hydraulic pump station structure controls the forced refrigeration module to start and perform active forced cooling treatment on the overheated hydraulic oil, so that it can be quickly cooled, which helps to improve the operation stability of the hydraulic pump station of the molding machine.

[0045] When the thermal expansion and contraction medium layer 210 is heated and expands to drive the pressing elastic piece 212 to elastically protrude outwards, the movement range of the pressing elastic piece 212 is restricted by the cylindrical air-permeable mesh cover 211 sleeved on the outer periphery of the pressing elastic piece 212, so as to avoid the protruding pressing elastic piece 212 being closely attached to the surface of the fiber liquid absorption layer 213, thereby affecting the normal sweating and cooling effect of the sweating cooling component.

[0046] Refer to Figure 6 , Figure 7 and Figure 9 Referring to and an embodiment of the present application provides a hydraulic oil cooling device for a hydraulic pump station of a molding machine. The retracting mechanism includes a heat-insulating bottom cylinder 215. One end of the heat-insulating bottom cylinder 215 with an opening is hermetically covered and connected with a heat-insulating end cover 208. Among them, both the heat-insulating bottom cylinder 215 and the heat-insulating end cover 208 are made of insulating and heat-insulating materials; A cross bar is slidably inserted into one end of the heat-insulating bottom cylinder 215 away from the heat-insulating end cover 208, and one end of the cross bar extends into the inner cavity of the heat-insulating bottom cylinder 215 and is connected with a sealing plug seat 216 that seals and slides in the inner cavity of the heat-insulating bottom cylinder 215. The other end of the cross bar extends out from the end of the heat-insulating bottom cylinder 215 and is connected with a cambered surface abutting plate 214; A first return spring connected between the sealing plug seat 216 and the heat-insulating end cover 208 is further arranged in the inner cavity of the heat-insulating bottom cylinder 215; An opening is further formed in one end of the heat-insulating bottom cylinder 215 away from the heat-insulating end cover 208;

[0047] Refer to Figure 7 and Figure 10 an embodiment of the present application provides a hydraulic oil cooling device for a hydraulic pump station of a molding machine. The channel structure includes an annular treatment tank 220 and an exhaust channel arranged inside the top end of the hollow heat-conducting rod 203; A ring-shaped plug body 219 is hermetically and slidably arranged in the inner cavity of the ring-shaped treatment groove 220. A second return spring is also arranged in the inner cavity of the ring-shaped treatment groove 220. One end of the second return spring is connected to the bottom of the ring-shaped plug body 219, and the other end is connected to the bottom wall of the ring-shaped treatment groove 220; One end of the exhaust passage is communicated with the bottom end of the ring-shaped treatment groove 220, and the other end penetrates through the side wall of the hollow heat conduction rod 203 and is communicated with the atmosphere; One end of the drainage pipeline 218 is connected to the heat insulation end cover 208 and is communicated with the inner cavity of the heat insulation bottom cylinder 215, and the other end penetrates into the hollow heat conduction rod 203 and is communicated with the top end of the ring-shaped treatment groove 220.

[0048] During the process that the thermal expansion and contraction medium layer 210 in the heat sensing member expands due to heat and drives the elastic protrusion of the elastic piece 212 outward and drives the cross bar in the retracting mechanism to retract, the sealing plug seat 216 that moves synchronously with the cross bar continuously injects the insulating coolant 217 into the channel structure at the top end of the hollow heat conduction rod 203 through the drainage pipeline 218, so that the temperature difference between the two ends of the hollow heat conduction rod 203 increases, the heat exchange efficiency of the tentacle unit is enhanced, so that when the evaporated liquid refrigerant medium part contacts the inner wall of the hollow heat conduction rod 203, its heat can be taken away more quickly and it can be quickly liquefied, thereby enhancing the sweating cooling efficiency of the sweating cooling member, and further contributing to improving the cooling efficiency of the hydraulic oil.

[0049] Refer to Figure 6 , Figure 11 and Figure 12 As shown in The elastic slider member includes a pulling slide seat 221 slidably connected in the inner cavity of the heat insulation bottom cylinder 215. A spring 222 is arranged on the side of the pulling slide seat 221 away from the heat insulation end cover 208, and the spring 222 is connected between the pulling slide seat 221 and the sealing plug seat 216. Among them, the pulling slide seat 221 is made of insulating material; One of the excitation contacts 223 is connected to the heat insulation end cover 208 in the retracting mechanism, and the other excitation contact 223 is connected to the pulling slide seat 221 in the elastic slider member; When the two excitation contacts 223 are in contact, the control circuit board 224 is triggered to control the wireless signal transmitter 225 to turn on, and then the wireless signal transmitter 225 sends an on control signal to the pump station controller 102.

[0050] Through the insulating cooling liquid 217 located within the indentation mechanism, heat dissipation and cooling treatment can also be achieved for the excitation contact terminals 223 and the signal transmission unit when the two excitation contact terminals 223 are connected. This not only helps to extend the service life of the synchronous control module but also helps to improve the operating stability of the synchronous control module.

[0051] When the thermo-expansion and contraction medium layer 210 in the heat sensing component is heated and expands to drive the forced elastic piece 212 to elastically protrude outwards, the space for the activity of the liquid refrigerant medium part that can be evaporated inside the hollow heat conducting rod 203 is further occupied, optimizing the internal space of the hollow heat conducting rod 203. After the forced refrigeration module is turned on, the cold source is continuously transferred to the upper cover part through the heat conducting gasket 204. Then, the cold source is quickly transferred from the upper cover part to the upper end surface of the hollow heat conducting rod 203 and continuously dissipates heat from the insulating cooling liquid 217 in the channel structure, which helps to further increase the temperature difference between the two ends of the hollow heat conducting rod 203. With the superposition of the above effects, the evaporated liquid refrigerant medium part can reach the upper part of the inner cavity of the hollow heat conducting rod 203 more quickly and quickly contact the relatively cold inner wall of the hollow heat conducting rod 203 to liquefy, which helps to further enhance the cooling effect on the hydraulic oil, shorten the cooling time of the hydraulic oil, and enable the temperature of the hydraulic oil to quickly drop below the preset critical upper limit, thus helping to shorten the on-time of the forced refrigeration module and reduce the energy consumption of equipment operation.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydraulic oil cooling device for a molding machine hydraulic pump station, characterized in that: It includes a hydraulic pump station structure and a heat extraction and cooling structure provided on the hydraulic pump station structure; The heat extraction and cooling structure includes a forced refrigeration module that can perform forced cooling treatment on the high-temperature hydraulic oil in the hydraulic pump station and is electrically connected to the hydraulic pump station structure, and several tentacle components; The tentacle component includes an upper cover piece in contact with the hydraulic pump station structure, and several tentacle units are evenly arranged on the upper cover piece; The tentacle unit includes a hollow heat extraction rod inserted into the upper cover piece, and the bottom end of the hollow heat extraction rod extends into the interior of the hydraulic pump station structure and contacts the hydraulic oil, while the top end extends out from the top of the upper cover piece and contacts the atmosphere. A sweating cooling piece is provided on the inner cavity side wall of the hollow heat extraction rod, and a heat sensing piece is also provided in the inner cavity of the hollow heat extraction rod. The heat sensing piece includes a thermal expansion and contraction medium layer and a forced elastic piece, and the thermal expansion and contraction medium layer is filled inside the sensing piece. A cylindrical breathable mesh cover is sleeved outside the heat sensing piece; A speed-up cooling piece is provided at the position corresponding to the side wall of the hollow heat extraction rod and the forced elastic piece. The speed-up cooling piece includes a retracting mechanism that can be telescopically moved and is made of heat-insulating material, and a channel structure provided at the top end of the hollow heat extraction rod. A reserved notch is opened at the position corresponding to the cylindrical breathable mesh cover and the retracting mechanism. The fixed end of the retracting mechanism is connected to the hollow heat extraction rod, and when the retracting mechanism is in the initial extended state, the end of its free end abuts against the side wall surface of the forced elastic piece; The retracting mechanism includes insulating coolant filled in it and a drainage pipeline, and the retracting mechanism is connected to the channel structure through the drainage pipeline, and the drainage pipeline is also filled with insulating coolant; On one tentacle unit in one of the tentacle components, there is also a synchronous control module that is electrically connected to the hydraulic pump station structure and is located inside the retracting mechanism; The synchronous control module includes a signal transmitting unit, two relatively arranged excitation contact terminals, and an elastic slider connected to the free end of the retracting mechanism. One of the excitation contact terminals is connected to the fixed end in the retracting mechanism, and the other excitation contact terminal is connected to the elastic slider; When the two excitation contact terminals contact, the signal transmitting unit is triggered to send an opening control signal to the hydraulic pump station structure.

2. The hydraulic oil cooling device of the molding machine hydraulic pump station according to claim 1, characterized in that: The sweating cooling piece includes a layer of fiber liquid absorption layer connected in the inner cavity of the hollow heat extraction rod, and a liquid refrigerant medium part is absorbed inside the fiber liquid absorption layer.

3. The hydraulic oil cooling device of the molding machine hydraulic pump station according to claim 1, wherein: The heat sensing piece includes an internally connected heat conducting cylinder shell provided in the inner cavity of the hollow heat extraction rod and having its bottom end connected to the bottom wall of the inner cavity of the hollow heat extraction rod; The thermal expansion and contraction medium layer is filled in the inner cavity of the internally connected heat conducting cylinder shell; An elastic piece groove adapted to the forced elastic piece is opened on the side wall of the internally connected heat conducting cylinder shell, and the forced elastic piece is connected in the elastic piece groove; The cylindrical breathable mesh cover is sleeved outside the internally connected heat conducting cylinder shell.

4. The hydraulic oil cooling device of the molding machine hydraulic pump station according to claim 3, characterized in that: The retracting mechanism includes a heat-insulating bottom cylinder, and a heat-insulating end cover is hermetically connected to the open end of the heat-insulating bottom cylinder; A cross bar is slidably inserted into the end of the heat-insulating bottom cylinder away from the heat-insulating end cover, and one end of the cross bar extends into the inner cavity of the heat-insulating bottom cylinder and is connected to a sealing plug seat that seals and slides in the inner cavity of the heat-insulating bottom cylinder. The other end of the cross bar extends out from the end of the heat-insulating bottom cylinder and is connected to a cambered surface abutting plate; A first return spring connected between the sealing plug seat and the heat insulation end cover is further provided in the inner cavity of the heat insulation bottom cylinder; An opening is further formed at one end of the heat insulation bottom cylinder away from the heat insulation end cover.

5. The hydraulic oil cooling device of the molding machine hydraulic pump station according to claim 4, characterized in that: The heat insulation bottom cylinder is connected to the side wall of the hollow heat conduction rod; When the retracting mechanism is in the initial extended state, the first return spring is in a relaxed state, and the arc-shaped abutting plate passes through the reserved notch and abuts against the side wall surface of the forced elastic piece.

6. The hydraulic oil cooling device of the molding machine hydraulic pump station according to claim 4, characterized in that: The channel structure includes an annular treatment groove and an exhaust channel provided inside the top end of the hollow heat conduction rod; An annular plug body is hermetically slid in the inner cavity of the annular treatment groove. A second return spring is further provided in the inner cavity of the annular treatment groove. One end of the second return spring is connected to the bottom of the annular plug body, and the other end is connected to the bottom wall of the annular treatment groove; One end of the exhaust channel communicates with the bottom end of the annular treatment groove, and the other end penetrates through the side wall of the hollow heat conduction rod and communicates with the atmosphere.

7. The hydraulic oil cooling device of the molding machine hydraulic pump station according to claim 6, characterized in that: One end of the drainage pipeline is connected to the heat insulation end cover and communicates with the inner cavity of the heat insulation bottom cylinder, and the other end penetrates into the hollow heat conduction rod and communicates with the top end of the annular treatment groove.

8. The hydraulic oil cooling device for the molding machine hydraulic pump station according to claim 1, wherein: The upper cover member includes a mounting base, and a heat conduction base integrally formed with and connected to the bottom of the mounting base; A heat conduction gasket is further connected to the bottom of the mounting base, and the heat conduction gasket is arranged around the outer circumference of the heat conduction base; The hollow heat conduction rod is inserted and fixed to the integrally formed structure composed of the mounting base and the heat conduction base.

9. The hydraulic oil cooling device of the molding machine hydraulic pump station according to claim 8, characterized in that: The hydraulic pump station structure includes a molding machine hydraulic pump station main body, and a pump station controller is provided on the molding machine hydraulic pump station main body; The forced refrigeration module includes a refrigeration compressor unit and a heat conduction shell fixedly installed in the inner cavity of the oil tank of the molding machine hydraulic pump station main body. An evaporator is provided inside the heat conduction shell. One end of the evaporator is connected to the input end of the refrigeration compressor unit, and the other end is connected to the output end of the refrigeration compressor unit; A top port adapted to the heat conduction base is formed at the position corresponding to the oil tank at the top of the molding machine hydraulic pump station main body. The heat conduction base is hermetically and movably inserted into the top port, and the mounting base is fixedly connected to the molding machine hydraulic pump station main body; The bottom end of the hollow heat conduction rod extends into the inner part of the oil tank of the molding machine hydraulic pump station main body and contacts the hydraulic oil.

10. The hydraulic oil cooling device of the molding machine hydraulic pump station according to claim 9, characterized in that: The signal transmitting unit includes a control circuit board connected to the heat insulation end cover near the opening of the heat insulation bottom cylinder, and a wireless signal transmitter is provided on the control circuit board; The elastic slider member includes a pulling slide seat slidably connected in the inner cavity of the heat insulation bottom cylinder. A spring is provided on one side of the pulling slide seat away from the heat insulation end cover, and the spring is connected between the pulling slide seat and the sealing plug seat; One of the excitation terminals is connected to the heat insulation end cover in the retracting mechanism, and the other excitation terminal is connected to the pulling slide seat in the elastic slider member; When the two excitation terminals are in contact, the control circuit board is triggered to control the wireless signal transmitter to turn on, and then the wireless signal transmitter sends an opening control signal to the pump station controller.

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