Double-oil supply device

Abstract

A double-oil supply device comprises a lower cover unit, an upper cover unit and a main body unit. The lower cover unit comprises a lower oil cover and a valve rod which can be operated to move in the lower oil cover in the axial direction of the valve rod. The upper cover unit comprises an upper oil cover. The main body unit comprises an inner pipe connected with the lower oil cover and the upper oil cover, an outer pipe surrounding the inner pipe and a pull rod penetrating through the inner pipe. And the inner pipe and the pull rod are matched to define an oil cup space. The inner pipe and the outer pipe are matched to define an oil drum space. According to the utility model, a plurality of channels are integrated in the lower oil cover, and the assembly can be completed only by installing the lower oil cover and the upper oil cover on the upper side and the lower side of the main body unit, so that the number of parts and pipelines which need to be installed can be greatly reduced, and the required installation space is reduced so as to reduce the overall volume.

Description

TECHNICAL FIELD

[0001] The utility model relates to an oil supply device, in particular to a double-oil oil supply device with modular design and simplified assembly. BACKGROUND

[0002] The main function of the pressure cylinder is to push the hydraulic oil inside by the gas input from the gas source, generate the pressure increasing effect after passing through the passage with reduced cross-sectional area, and finally output the thrust to achieve the function of high pressure actuation. The pressure cylinder has wide application, including replacing the tool by the auxiliary function machine or clamping the workpiece by the auxiliary jig. However, the traditional pressure type tool releasing device has the following problems: (1) slow actuation speed; (2) since the oil pressure is used to release the tool and the gas pressure is used to clamp the tool, the pressure may decrease due to the mixing of compressed gas into the oil, resulting in unstable output; (3) since the compressed gas often contains moisture, it may cause rust of the tool cylinder and increase the overall use cost.

[0003] Therefore, the double-oil pressure type tool releasing device (which can also be referred to as double-oil pressure device) is designed to solve the above problems of the traditional pressure type tool releasing device. The existing double-oil pressure device mainly includes a pressure cylinder, an oil tank connected to the pressure cylinder and containing hydraulic oil, and an oil cup connected to the pressure cylinder and also containing hydraulic oil. The pressure cylinder surrounds a containing chamber and a through hole communicating with the containing chamber. The through hole is used to install a tool releasing oil pipe. The oil tank is provided with an air inlet at the top for oil-gas conversion and an oil outlet at the bottom for installing a tool clamping oil pipe.

[0004] During the cooperation of the pressure cylinder, the oil tank and the oil cup to perform the tool clamping and releasing action of the tool machine spindle, the hydraulic oil in the oil tank and the oil cup flows back and forth in the pipeline, which may cause the liquid level of the hydraulic oil in the oil tank and the oil cup to be different. This not only affects the operation performance, but also may cause the hydraulic oil in the oil tank or the oil cup to be insufficient to operate normally. In addition, the traditional double-oil pressure device needs to install the pressure cylinder, the oil tank and the oil cup, and also needs to install various pipelines connecting the three with other devices outside. This not only has many components and complicated installation, but also makes the overall size too large and occupies a lot of setting space. SUMMARY

[0005] The utility model aims at providing a double-oil oil supply device with modular design and simplified assembly.

[0006] The utility model discloses a double oil supply device, containing lower lid unit, upper lid unit and main part unit, the lower lid unit includes lower oil cover, and the valve rod that can be operated and moves in the lower oil cover along the axial of itself, the lower oil cover has top seat part, the wall part that extends downward from the top seat part, the valve seat part that connects the top seat part and the wall part, and the setting seat part that connects the top seat part and opens the air inlet, the top seat part opens the first perforation that passes through downward, and the second perforation that is located the first perforation outside and passes through downward, the wall part defines the gas passage, and the gas passage that connects the air inlet, the valve seat part surrounds and defines the valve groove that connects the gas passage, the gas passage, the first perforation and the second perforate, the valve rod is movably inserted in the valve groove, and can be operated and reciprocatingly moves along the valve groove relative to the valve seat part between the operation position and the pressure balance position, when the valve rod is located the operation position, the gas passage connects the gas passage, and the first perforation does not connect the second perforation, when the valve rod is located the pressure balance position, the gas passage does not connect the gas passage, and the first perforation connects the second perforation, the upper lid unit includes the upper oil cover that is located the lower oil cover above and defines the exhaust hole, the main part unit includes the inner tube that is connected the top seat part and the upper oil cover respectively, the outer tube that surrounds the inner tube and is connected the top seat part and the upper oil cover respectively, the pull rod that is worn the inner tube and is arranged the top seat part and the upper oil cover respectively in both ends, and the gas pipe that is inserted the top seat part and the upper oil cover respectively and is located the outer tube outside in both ends, the inner tube and the pull rod cooperate and define the oil cup space that connects the first perforation, the inner tube and the outer tube cooperate and define the oil barrel space that connects the second perforation, both ends of the gas pipe connect the gas passage and the upper oil cover respectively.

[0007] The utility model discloses a double oil oil supply device, the valve groove of valve seat portion of lower oil cover has axial groove section, two encircle and communicate the pressure balance ring groove section of axial groove section and respectively communicate the first perforation and the second perforation, and two encircle and communicate the air passage ring groove section of axial groove section and respectively communicate the gas channel and the gas delivery channel, the maximum inner diameter of pressure balance ring groove section and the maximum inner diameter of air passage ring groove section are all greater than the inner diameter of axial groove section, the valve rod has the rod body portion of slippable location in axial groove section, encircle and connect the first convex ring portion of rod body portion and the maximum inner diameter of air passage ring groove section is less than the outer diameter, encircle and connect the second convex ring portion of rod body portion and along axial away from the first convex ring portion, and the maximum inner diameter of pressure balance ring groove section is less than the outer diameter, and encircle and connect the sealing ring portion of rod body portion and along axial be located between the first convex ring portion and the second convex ring portion and can be removed and fixed in axial groove section, when the valve rod is located in the operation position, the first convex ring portion is located in one of air passage ring groove section, make the gas channel can pass through axial groove section and communicate the gas delivery channel, the second convex ring portion is fixed in axial groove section and is located between the pressure balance ring groove section, make the first perforation is blocked by the second convex ring portion and can not communicate the second perforation, when the valve rod is located in the pressure balance position, the second convex ring portion is located in one of pressure balance ring groove section, make the first perforation can pass through axial groove section and communicate the second perforation, the first convex ring portion is fixed in axial groove section and is located between the air passage ring groove section, make the gas channel is blocked by the first convex ring portion and can not communicate the gas delivery channel.

[0008] The utility model discloses a double oil oil supply device, the surrounding wall portion of lower oil cover still defines two detection channels that communicate respectively the oil cup space and the oil barrel space, the main body unit still includes two eaches and is inserted respectively in the top seat portion and the upper oil cover's view oil pipe, the view oil pipe communicates respectively the detection channel and is made of transparent material.

[0009] The utility model discloses a double oil oil supply device, the lower cover unit still includes two ends respectively and the spring of valve rod and valve seat portion, and the solenoid valve of corresponding valve rod is set up on the lower oil cover, when the solenoid valve is electrified, the solenoid valve will push the valve rod through compressed air, make the valve rod moves in the valve groove and compresses the spring, when the solenoid valve is not electrified, the solenoid valve does not input compressed air, the spring will push the valve rod reset through the elastic force, thereby makes the valve rod reciprocatingly moves between the operation position and the pressure balance position.

[0010] The utility model discloses a double oil oil supply device, the upper oil cover of upper cover unit still defines the through groove that extends from inside to outside and is connected with the exhaust hole, the air guide hole that is set down and is connected with the through groove and the air guide pipe of main part unit, and the air hole that is set down and is connected with the through groove and the oil bucket space, the upper cover unit still includes the exhaust head that is fixed in the through groove and defines the internal passage that is connected with the exhaust hole, and the check element that is located the exhaust head outside along the extension direction of the through groove, the air guide hole and the air hole are located the outside and the inside of check element respectively along the extension direction of the through groove, when the pressure of check element outside is greater than inside, check element leans against the exhaust head and blocks the internal passage, makes the air guide hole connect the air hole, when the pressure of check element inside is greater than outside, check element is away from the exhaust head and does not block the internal passage, makes the air hole connect the exhaust hole, and check element seals the through groove, makes the air guide hole not connect the air hole or the exhaust hole.

[0011] The utility model discloses a double oil oil supply device, the upper cover unit still includes the plug cover that is set in the through groove and closes the through groove, and is located the exhaust head outside along the extension direction of the through groove, the check element is located the exhaust head and the plug cover between along the extension direction of the through groove and has flexible outer edge, the exhaust head divides the annular space that surrounds the exhaust head and is connected with the air hole and is located the inside of check element, when the pressure of check element outside is greater than inside, the outer edge of check element produces deformation to make the air guide hole connect the annular space, when the pressure of check element inside is greater than outside, check element leans against the plug cover, makes the air guide hole be blocked by check element and not connect the annular space, and the annular space is connected with the internal passage and the air hole.

[0012] The utility model discloses a double oil oil supply device, the pull rod of main part unit is made of aluminium material with magnetic induction, and surrounds and defines the through groove that extends along the self axial direction, the main part unit still includes the float that is sleeved on the pull rod and is located the oil cup space, the magnetic ring that is set up on the float, and two limit sensing switches that are set up in the pull rod and are located the through groove.

[0013] The utility model discloses a double oil oil supply device, the top seat part of lower oil cover still sets down and extends the oil delivery channel that is connected with the oil bucket space and is outward again.

[0014] The utility model discloses a double oil oil supply device, the lower oil cover of lower cover unit still has the sealing plate part that can be detachably set up in the surrounding wall part, the sealing plate part covers and sets up in the surrounding wall part below and blocks the air guide channel, the gas delivery channel and the detection channel.

[0015] The double oil supply device, the lower oil cover unit further has a base portion extending downward from the top seat portion, and the base portion defines a connecting flow channel capable of communicating the oil drum space by control.

[0016] The utility model discloses beneficial effect lies in: the utility model integrates multiple channels in the lower oil cover and still can plan channel path according to demand, only needs to install the lower oil cover and the upper oil cover on the upper and lower two sides of the main unit when assembling and can complete the assembly, plus the main unit has included the oil drum space and the oil cup space, therefore need not to set up the oil cup or oil drum extra, so can greatly reduce the number of required installation components and pipeline, and reduce the required installation space and reduce the overall volume. In addition, by moving the valve rod to the pressure balance position, the oil drum space and the oil cup space are communicated with each other, so that the hydraulic oil liquid level is balanced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view illustrating a first embodiment of the utility model double oil supply device;

[0018] Figure 2 It is a side view section, illustrates Figure 1 The side view section of

[0019] Figure 3 It is a schematic diagram, illustrates the valve rod in the first embodiment in section mode in operation position;

[0020] Figure 4 It is an incomplete side view section, illustrates the side view section appearance when not showing the valve rod, Figure 4 The viewing direction of Figure 3 ;

[0021] Figure 5 It is a perspective view, illustrates the lower oil cover in the first embodiment;

[0022] Figure 6 It is a bottom view, illustrates the bottom view appearance of the lower oil cover, Figure 6 The sealing plate portion is not shown in

[0023] Figure 7 It is a bottom view section, illustrates the section appearance when viewing the lower oil cover from bottom;

[0024] Figure 8 It is a perspective view, illustrates the sealing ring corresponding to the surrounding wall portion of the lower oil cover;

[0025] Figure 9 It is a top view section, illustrates the section appearance when viewing the lower oil cover from top;

[0026] Figure 10 It is a bottom-view sectional view, illustrating and Figure 7 Cross-sectional views from the same perspective but at different height positions;

[0027] Figure 11 This is a schematic diagram, showing the valve stem in a cross-sectional view at the pressure-balancing position;

[0028] Figure 12 and Figure 13 These are all schematic diagrams illustrating the connection state when the backstop in the first embodiment is located in different positions;

[0029] Figure 14 This is a front cross-sectional view illustrating the two oil sight tubes of the first embodiment;

[0030] Figure 15 This is a three-dimensional diagram illustrating the practical application of the first embodiment;

[0031] Figure 16 This is a perspective view illustrating the second embodiment of the dual-oil supply device of this utility model;

[0032] Figure 17 This is a side view sectional view, which explains... Figure 16 The side view cross-sectional pattern;

[0033] Figure 18 This is a three-dimensional diagram illustrating the practical application of the second embodiment;

[0034] Figure 19 and Figure 20 All are three-dimensional diagrams illustrating the third embodiment of the dual-oil supply device of this utility model. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] See Figure 1 , Figure 2 ,and Figure 3 The first embodiment of the dual-oil supply device of this utility model includes a lower cover unit 1, an upper cover unit 2 located above the lower cover unit 1, and a main body unit 3 disposed between the lower cover unit 1 and the upper cover unit 2. The lower cover unit 1 includes a lower oil cover 11 and a valve stem 12 (not shown) operable to move along its own axis within the lower oil cover 11. Figure 2 The valve includes a spring 13 housed in the valve stem 12 and a solenoid valve 14 disposed on the lower oil cover 11 corresponding to the valve stem 12.

[0037] See Figure 4 , Figure 5 ,and Figure 6, the lower oil cover 11 has a top seat portion 15, a surrounding wall portion 16 extending downwardly from the top seat portion 15, a sealing plate portion 17 (not shown in the drawings) detachably arranged at the bottom surface of the surrounding wall portion 16, a valve seat portion 18 extending downwardly from the top seat portion 15 and connected to the surrounding wall portion 16, and a setting seat portion 19 connected to the top seat portion 15 and having an air inlet 191. Figure 6 The top seat portion 15 has a first through hole 151 extending downwardly, a second through hole 152 extending downwardly and located outside the first through hole 151, and an oil delivery passage 153 extending downwardly and outwardly and located outside the second through hole 152.

[0038] Referring to Figure 5 , Figure 6 , and Figure 7 , the surrounding wall portion 16 defines a gas guide passage 161 extending to the valve seat portion 18, a gas delivery passage 162 communicating with the air inlet 191 and extending to the valve seat portion 18, and two detection passages 163. The sealing plate portion 17 is arranged below the surrounding wall portion 16 to cover the gas guide passage 161, the gas delivery passage 162, and the detection passages 163. It is particularly noted that in the first embodiment, the surrounding wall portion 16 is connected to each other to be integral, but in fact, it can be multiple and not connected to each other to surround the gas guide passage 161, the gas delivery passage 162, and the detection passages 163, respectively. The paths and arrangement of the gas guide passage 161, the gas delivery passage 162, and the detection passages 163 can be adjusted according to actual needs, and are not limited to the examples shown in the drawings. Referring to Figure 5 , Figure 6 , and Figure 8 , a sealing ring 164 corresponding to the gas guide passage 161, the gas delivery passage 162, and the detection passages 163 can be arranged between the surrounding wall portion 16 and the sealing plate portion 17 to achieve the effect of sealing different pipes without interfering with each other.

[0039] Referring to Figure 3 , Figure 9 , and Figure 10, the valve seat portion 18 surrounds a valve groove 181 which defines a communication between the air guide passage 161, the air delivery passage 162, the first through hole 151, and the second through hole 152. The valve groove 181 is communicated with the air guide passage 161 through a slot A, and is communicated with the air delivery passage 162 through a hole B. In addition to the above-mentioned communication and hole, the valve groove 181 can be provided with other holes according to the actual flow channel requirements, which are not limited by the above-mentioned text or the drawings. The valve groove 181 has an axial groove section 182, two pressure balance ring groove sections 183 which surround and communicate with the axial groove section 182 and are respectively communicated with the first through hole 151 and the second through hole 152, and two air passage ring groove sections 184 which surround and communicate with the axial groove section 182 and are respectively communicated with the air guide passage 161 and the air delivery passage 162. The maximum inner diameter of the pressure balance ring groove section 183 and the maximum inner diameter of the air passage ring groove section 184 are both greater than the inner diameter of the axial groove section 182. The valve rod 12 (not shown in Figure 9 and Figure 10 ) is movably inserted into the valve groove 181, and has a rod body portion 121 which is slidably located in the axial groove section 182, a first convex ring portion 122 which surrounds and connects the rod body portion 121 and has an outer diameter smaller than the maximum inner diameter of the air passage ring groove section 184, a second convex ring portion 123 which surrounds and connects the rod body portion 121 and is axially away from the first convex ring portion 122, and has an outer diameter smaller than the maximum inner diameter of the pressure balance ring groove section 183, and a sealing ring portion 124 which surrounds and connects the rod body portion 121 and is axially located between the first convex ring portion 122 and the second convex ring portion 123 and is movably clamped in the axial groove section 182. The spring 13 is accommodated in the valve rod 12 and abuts against the rod body portion 121 and the valve seat portion 18 at both ends.

[0040] Referring to Figure 9 , Figure 10 , and Figure 11 , and combining Figure 3 and Figure 4 , when the electromagnetic valve 14 is energized, a coil (not shown in the figure) in the electromagnetic valve 14 attracts a movable iron core (not shown in the figure) to move to make an air passage (not shown in the figure) in an open state. The compressed air input from outside the electromagnetic valve 14 enters the valve groove 181 through the air passage, and pushes the valve rod 12 to move in the valve groove 181 and compresses the spring 13, so that the valve rod 12 is located in a position as Figure 3The operation position is shown. When the electromagnetic valve 14 is not energized, the movable iron core is reset to close the air passage, so that the compressed gas cannot pass through the air passage and be input into the valve groove 181, so that the valve rod 12 is not pushed by the compressed gas, and the spring 13 pushes the valve rod 12 by the elastic force, so that the valve rod 12 is moved from the operation position to an equilibrium position as shown. Figure 11 The equilibrium position is shown. When the valve rod 12 is located in the operation position as shown, the first convex ring part 122 is located in one of the air ring groove sections 184, and since the first convex ring part 122 cannot completely seal the air ring groove section 184, the air ring groove sections 184 can be connected to each other through the axial groove section 182, so that the air guide channel 161 can be connected to the air supply channel 162. At the same time, the second convex ring part 123 is clamped in the axial groove section 182 and located between the equilibrium ring groove sections 183, and the second convex ring part 123 seals the axial groove section 182, so that the equilibrium ring groove sections 183 cannot be connected to each other through the axial groove section 182, so that the first perforation 151 is not connected to the second perforation 152. Figure 3 The equilibrium position is shown. When the valve rod 12 is located in the operation position as shown, the first convex ring part 122 is located in one of the air ring groove sections 184, and since the first convex ring part 122 cannot completely seal the air ring groove section 184, the air ring groove sections 184 can be connected to each other through the axial groove section 182, so that the air guide channel 161 can be connected to the air supply channel 162. At the same time, the second convex ring part 123 is clamped in the axial groove section 182 and located between the equilibrium ring groove sections 183, and the second convex ring part 123 seals the axial groove section 182, so that the equilibrium ring groove sections 183 cannot be connected to each other through the axial groove section 182, so that the first perforation 151 is not connected to the second perforation 152. Figure 11 The equilibrium position is shown. When the valve rod 12 is located in the operation position as shown, the first convex ring part 122 is located in one of the air ring groove sections 184, and since the first convex ring part 122 cannot completely seal the air ring groove section 184, the air ring groove sections 184 can be connected to each other through the axial groove section 182, so that the air guide channel 161 can be connected to the air supply channel 162. At the same time, the second convex ring part 123 is clamped in the axial groove section 182 and located between the equilibrium ring groove sections 183, and the second convex ring part 123 seals the axial groove section 182, so that the equilibrium ring groove sections 183 cannot be connected to each other through the axial groove section 182, so that the first perforation 151 is not connected to the second perforation 152.

[0041] Referring to Figure 1 , Figure 12 , and Figure 13The upper cover unit 2 includes an upper oil cover 21 located above the lower oil cover 11, a vent head 22 disposed in the upper oil cover 21, a check member 23 disposed in the upper oil cover 21 and located outside the vent head 22, and a plug cover 24 disposed in the upper oil cover 21 and located outside the check member 23. The upper oil cover 21 defines a through-going vent hole 211 upwardly, a through channel 212 extending from inside to outside and communicating with the vent hole 211, a gas guide hole 213 downwardly and communicating with the through channel 212, and a vent hole 214 downwardly and communicating with the through channel 212. The vent head 22 is fixed in the through channel 212 and defines an internal passage 221 communicating with the vent hole 211. The vent head 22 divides the through channel 212 into an annular space 231 surrounding the vent head 22 and communicating with the vent hole 214 and located inside the check member 23. The check member 23 is located between the vent head 22 and the plug cover 24 along the extension direction of the through channel 212 and has a flexible outer edge. The plug cover 24 is disposed in the through channel 212 to close the through channel 212 and is located outside the vent head 22 along the extension direction of the through channel 212. The gas guide hole 213 and the vent hole 214 are respectively located outside and inside the check member 23 along the extension direction of the through channel 212. When the pressure outside the check member 23 is greater than that inside, the check member 23 abuts against the vent head 22 to block the internal passage 221 as shown in Figure 12 . The outer edge of the check member 23 is deformed inwardly to make the gas guide hole 213 communicate with the annular space 231 to communicate with the vent hole 214. At this time, the vent hole 211 does not communicate with the gas guide hole 213 or the vent hole 214. When the pressure inside the check member 23 is greater than that outside, the check member 23 is away from the vent head 22 to not block the internal passage 221 and abuts against the plug cover 24 as shown in Figure 13 . Since the outer edge of the check member 23 is gradually expanded from inside to outside, when the inside is pressed, the outer edge is deformed to abut against the plug cover 24 to seal the through channel 212. Thus, the gas guide hole 213 is blocked by the check member 23 to not communicate with the annular space 231, thereby causing the gas guide hole 213 not to communicate with the vent hole 214 or the vent hole 211. Meanwhile, the annular space 231 communicates with the internal passage 221 and the vent hole 214 to make the vent hole 214 communicate with the vent hole 211.

[0042] Referring to Figure 1 , Figure 2 , and Figure 4 , and referring to Figure 14The main unit 3 comprises an inner tube 31 connected to the top base 15 and the upper oil cover 21 at two ends, an outer tube 32 surrounding the inner tube 31 and connected to the top base 15 and the upper oil cover 21 at two ends, a pull rod 33 penetrating the inner tube 31 and arranged in the top base 15 and the upper oil cover 21 at two ends, a gas guide tube 34 inserted into the top base 15 and the upper oil cover 21 at two ends and located outside the outer tube 32, two sight oil tubes 35 each inserted into the top base 15 and the upper oil cover 21 at two ends, a float 36 sleeved on the pull rod 33, a magnetic ring 37 arranged on the float 36, and two limit sensing switches 38 arranged in the pull rod 33 in an up-down interval. The pull rod 33 is made of aluminum material with magnetic induction, and surrounds a through groove 331 extending along the axial direction of the pull rod 33. The inner tube 31 and the pull rod 33 cooperatively define an oil cup space 311 connected to the first through hole 151 and surrounding the through groove 331. The inner tube 31 and the outer tube 32 cooperatively define an oil barrel space 321 connected to the second through hole 152, the oil delivery channel 153, and the air vent hole 214 and surrounding the oil cup space 311. Referring to Figure 2 、 Figure 6 , and Figure 14 , the oil cup space 311 and the oil barrel space 321 are connected to the detection channel 163 through openings C and D, respectively. The two ends of the gas guide tube 34 are connected to the gas guide channel 161 and the gas guide hole 213, respectively. The sight oil tubes 35 are connected to the detection channel 163 and are made of transparent material, and the user can detect the liquid level of the hydraulic oil through the sight oil tubes 35 connected to the oil cup space 311 and the oil barrel space 321, respectively. The float 36 is located in the oil cup space 311, the limit sensing switches 38 are located in the through groove 331, and the float 36 rises and falls with the liquid level in the oil cup space 311, when rising or falling to a set liquid level, the magnetic ring 37 triggers one of the corresponding limit sensing switches 38 to remind the maintenance personnel that the oil amount in the oil cup space 311 is at a high or low position.

[0043] Referring to Figure 2 、 Figure 4 , and Figure 12 , and cooperating with Figure 15 , the first embodiment can be used as shown in Figure 15 connecting an oil cylinder 41 and a horizontal supercharged cylinder 42. Specifically, the air inlet 191 (see Figure 7) can be connected with the solenoid valve 421 for delivering compressed air of the horizontal pressure cylinder 42 through the quick joint E and the pipeline. The oil delivery passage 153 is connected with the oil cylinder 41 through the valve body F and the pipeline, whereby the hydraulic oil can be switched to flow into the oil cylinder 41 or return to the oil bucket space 321 through the valve body F. Referring to Figures 2 to 4 , and Figure 12 In the operation of the first embodiment, the solenoid valve 14 is energized to make the valve rod 12 in the operation position, so that the compressed gas can enter the air guide pipe 34 through the gas delivery passage 162 and the air guide passage 161, and then the compressed air can enter the oil bucket space 321 through the air guide hole 213 to pressurize the hydraulic oil.

[0044] Referring to Figure 4 , Figure 11 , and Figure 13 When the first embodiment is shut down, the solenoid valve 14 is not energized to make the valve rod 12 move to the pressure balancing position, so that the gas delivery passage 162 is not connected with the air guide passage 161, which can ensure that the compressed air cannot enter the air guide passage 161, and if the pressure in the oil bucket space 321 is higher at this time, the pressure inside the check element 23 is greater than the outside, which makes the gas in the oil bucket space 321 pass through the air hole 214 and the internal passage 221 and then be discharged from the exhaust hole 211, thereby achieving the function of exhaust pressure relief, and then the oil bucket space 321 and the oil cup space 311 can be connected with each other due to the connection between the first perforation 151 and the second perforation 152, so that the hydraulic oil in the oil bucket space 321 and the oil cup space 311 can be adjusted to the same height through the principle of communication pipe when the machine is shut down, thereby ensuring that the first embodiment can maintain normal operation. Compared with the traditional double-oil pressure booster which needs to be shut down from time to time and manually adjusted by artificial method to balance the liquid level height of the oil bucket and the oil cup, the automatic exhaust and liquid level balancing method of the present application when the machine is shut down is more beneficial to automation, thereby conforming to the trend of intelligentization and automatic management, and achieving the energy-saving effect. Moreover, the present application is different from the traditional pressure cylinder in application and can reduce the required air pressure, thereby reducing energy consumption and achieving the effect of saving electricity.

[0045] Referring to Figure 16 , Figure 17 , and Figure 18This is a second embodiment of the dual-oil supply device of this utility model. The second embodiment is largely the same as the first embodiment, except that the lower oil cover 11 of the lower cover unit 1 also has a base portion 10 extending downward from the top seat portion 15. The base portion 10 defines a connecting flow channel 101 that is operably connected to the oil tank space 321 by a valve body, steel ball, or other controllable means. In actual use, this second embodiment can be used as follows... Figure 18 The diagram shows a connection to a vertical booster cylinder 43 and a spindle tool release cylinder 44. Specifically, the oil supply channel 153 is connected to the vertical booster cylinder 43 via a pipeline or valve seat, and the air inlet 191 is connected to the solenoid valve 431 of the vertical booster cylinder 43 for supplying compressed air via a quick connector E and a pipeline (the connecting pipeline is not shown in the diagram). Figure 18 (Illustrated in the figure), and the oil chamber housing 432 of the vertical booster cylinder 43 is connected to the spindle tool release cylinder 44 so that the hydraulic oil can be boosted by the vertical booster cylinder 43 and sent to the spindle tool release cylinder 44 through this second embodiment. At the same time, the connecting flow channel 101 can be connected to the spindle tool release cylinder 44 through a pipeline so that the hydraulic oil can flow back from the spindle tool release cylinder 44 to the oil tank space 321 through the connecting flow channel 101, thereby achieving the functions of clamping and releasing the tool.

[0046] See Figure 19 and Figure 20 This is the third embodiment of the dual oil supply device of the present invention. The third embodiment is generally the same as the first embodiment, except that the hydraulic cylinder 41 and the booster cylinder 42' are changed to a vertical configuration, so that they are in the same direction as the dual oil supply device. In addition, the third embodiment also provides two reinforcing tie rods G between the hydraulic cylinder 41 and the booster cylinder 42', thereby strengthening the overall structural strength during use.

[0047] In summary, this utility model integrates complex flow channels and passages into the lower oil cap 11 and the upper oil cap 21. This allows for assembly simply by combining the upper oil cap 21, the lower oil cap 11, and the main unit 3, eliminating the need for excessive accessories and complex pipelines. Furthermore, by integrating the oil tank space 321 and the oil cup space 311, the overall volume is significantly reduced, thus lowering the required installation space. On the other hand, this utility model can control the valve stem 12 to move to the pressure-balancing position at a specific time, and after venting and depressurizing, connect the oil tank space 321 to the oil cup space 311. This maintains equal hydraulic oil levels in both the oil tank space 321 and the oil cup space 311, ensuring normal overall operation. Moreover, this utility model achieves energy-saving effects, thus effectively fulfilling its intended purpose.

Claims

1. A dual oil supply device comprising a lower cap unit, an upper cap unit, and a main body unit; characterized in that: The lower cap unit includes a lower oil cap and a valve stem operable to move along an axis thereof within the lower oil cap, the lower oil cap having a top seat portion, a surrounding wall portion extending downward from the top seat portion, a valve seat portion connecting the top seat portion and the surrounding wall portion, and a setting seat portion connecting the top seat portion and opening an air inlet, the top seat portion opening a first through hole downward and a second through hole laterally and downward outside the first through hole, the surrounding wall portion defining an air guide passage and an air delivery passage communicating with the air inlet, the valve seat portion surrounding a valve groove communicating with the air guide passage, the air delivery passage, the first through hole, and the second through hole, the valve stem movably inserted into the valve groove and operable to reciprocate along the valve groove relative to the valve seat portion between an operation position and a pressure balancing position, when the valve stem is in the operation position, the air guide passage communicates with the air delivery passage, and the first through hole does not communicate with the second through hole, when the valve stem is in the pressure balancing position, the air guide passage does not communicate with the air delivery passage, and the first through hole communicates with the second through hole, the upper cap unit includes an upper oil cap above the lower oil cap and defining an air outlet, the body unit includes an inner tube having two ends connected to the top seat portion and the upper oil cap respectively, an outer tube surrounding the inner tube and having two ends connected to the top seat portion and the upper oil cap respectively, a pull rod penetrating the inner tube and having two ends arranged in the top seat portion and the upper oil cap respectively, and an air guide tube having two ends inserted into the top seat portion and the upper oil cap respectively and outside the outer tube, the inner tube and the pull rod cooperatively defining an oil cup space communicating with the first through hole, the inner tube and the outer tube cooperatively defining an oil barrel space communicating with the second through hole, and the two ends of the air guide tube communicating with the air guide passage and the upper oil cap respectively.

2. The dual oil supply oiling device of claim 1, wherein: The valve groove of the valve seat portion of the lower oil cover has an axial groove section, two pressure balance ring groove sections surrounding and communicating with the axial groove section and respectively communicating with the first perforation and the second perforation, and two air passage ring groove sections surrounding and communicating with the axial groove section and respectively communicating with the air guide passage and the air delivery passage, the maximum inner diameter of the pressure balance ring groove sections and the maximum inner diameter of the air passage ring groove sections are both greater than the inner diameter of the axial groove section, the valve rod has a rod body portion slidably located in the axial groove section, a first protruding ring portion surrounding and connected with the rod body portion and having an outer diameter smaller than the maximum inner diameter of the air passage ring groove sections, a second protruding ring portion surrounding and connected with the rod body portion and axially away from the first protruding ring portion and having an outer diameter smaller than the maximum inner diameter of the pressure balance ring groove sections, and a sealing ring portion surrounding and connected with the rod body portion and axially located between the first protruding ring portion and the second protruding ring portion and movably clamped in the axial groove section, when the valve rod is located in the operation position, the first protruding ring portion is located in one of the air passage ring groove sections, so that the air guide passage can communicate with the air delivery passage through the axial groove section, and the second protruding ring portion is clamped in the axial groove section and located between the pressure balance ring groove sections, so that the first perforation is blocked by the second protruding ring portion and cannot communicate with the second perforation, when the valve rod is located in the pressure balance position, the second protruding ring portion is located in one of the pressure balance ring groove sections, so that the first perforation can communicate with the second perforation through the axial groove section, and the first protruding ring portion is clamped in the axial groove section and located between the air passage ring groove sections, so that the air guide passage is blocked by the first protruding ring portion and cannot communicate with the air delivery passage.

3. The dual oil supply oiling device of claim 1, wherein: The surrounding wall portion of the lower oil cover further defines two detection passages respectively communicating with the oil cup space and the oil tank space, and the main body unit further includes two sight tubes each having two ends respectively inserted into the top seat portion and the upper oil cover, the sight tubes respectively communicate with the detection passages and are made of transparent material.

4. The dual oil supply oiling device of claim 1, wherein: The lower cover unit further includes two springs each abutting against the valve rod and the valve seat portion, and a solenoid valve provided on the lower oil cover corresponding to the valve rod, when the solenoid valve is energized, the solenoid valve pushes the valve rod by compressed air, so that the valve rod moves in the valve groove and compresses the springs, when the solenoid valve is not energized, the solenoid valve does not input compressed air, and the springs push the valve rod back to the original position by elastic force, so that the valve rod reciprocates between the operation position and the pressure balance position.

5. The dual oil supply oiling device of claim 2, wherein: The upper cover unit further defines a guide channel extending from inside to outside and communicating with the exhaust hole, a gas guide hole downwardly opening and communicating with the guide channel and the gas guide pipe of the main body unit, and a gas passage hole downwardly opening and communicating with the guide channel and the oil bucket space, the upper cover unit further comprising an exhaust head fixed in the guide channel and defining an internal passage communicating with the exhaust hole, and a check member located outside the exhaust head along the extension direction of the guide channel, the gas guide hole and the gas passage hole being located outside and inside the check member along the extension direction of the guide channel respectively, when the pressure outside the check member is greater than that inside, the check member abuts against the exhaust head to block the internal passage, so that the gas guide hole communicates with the gas passage hole, when the pressure inside the check member is greater than that outside, the check member is away from the exhaust head to not block the internal passage, so that the gas passage hole communicates with the exhaust hole, and the check member seals the guide channel, so that the gas guide hole does not communicate with the gas passage hole or the exhaust hole.

6. The dual oil supply oiling device of claim 5, wherein: The upper cover unit further comprises a plug cover arranged in the guide channel to close the guide channel and located outside the exhaust head along the extension direction of the guide channel, the check member is located between the exhaust head and the plug cover along the extension direction of the guide channel and has a flexible outer edge, the exhaust head divides the guide channel into an annular space surrounding the exhaust head and communicating with the gas passage hole and located inside the check member, when the pressure outside the check member is greater than that inside, the outer edge of the check member deforms inwardly to make the gas guide hole communicate with the annular space, when the pressure inside the check member is greater than that outside, the check member abuts against the plug cover, so that the gas guide hole is blocked by the check member and does not communicate with the annular space, and the annular space communicates with the internal passage and the gas passage hole.

7. The dual oil supply oiling device of claim 1, wherein: The pull rod of the main body unit is made of aluminum material with magnetic induction and surrounds a through channel extending along the axial direction of the pull rod, the main body unit further comprising a float sleeve arranged on the pull rod and located in the oil cup space, a magnetic ring arranged on the float sleeve, and two limit sensing switches arranged in the pull rod and located in the through channel in an upper and lower spaced manner.

8. The dual oil supply oiling device of claim 1, wherein: The top seat portion of the lower oil cover further has an oil delivery passage extending downwardly and outwardly and communicating with the oil bucket space.

9. The dual oil supply oiling device of claim 3, wherein: The lower oil cover of the lower cover unit further has a sealing plate portion detachably arranged on the surrounding wall portion, the sealing plate portion covering the surrounding wall portion below to block the gas guide channel, the gas delivery channel, and the detection channel.

10. The dual oil supply oiling device of claim 1, wherein: The lower oil cover of the lower cover unit further has a base portion extending downwardly from the top seat portion, the base portion defining a connection flow channel capable of being controlled to communicate with the oil bucket space.

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