Die-casting device for machining parts of high-pressure pump

Abstract

The application discloses a die-casting forming device for high-pressure pump part machining, which comprises a base, a mold closing system and a pressure injection system; the mold closing system comprises a fixed mold plate fixed on the base, a sliding mold plate sliding on the base, a hydraulic drive device for driving the sliding mold plate to slide, and a cooling mechanism for cooling a high-pressure pump part mold; the cooling mechanism comprises a cooling box body fixed on one side of the fixed mold plate, a low-temperature chamber and a high-temperature chamber arranged in the cooling box body, a serpentine pipeline fixed in the cooling box body, a liquid exchange channel connecting the low-temperature chamber and the high-temperature chamber, a liquid exchange-out pipe with one end connected to the low-temperature chamber, a liquid exchange-in pipe with one end connected to the high-temperature chamber, and a liquid exchange pump connected to the other ends of the liquid exchange-out pipe and the liquid exchange-in pipe respectively; a male die of the high-pressure pump part mold and a female die are fixed on opposite sides of the cooling box body and the sliding mold plate respectively. The application has the advantages that the high-pressure pump die-casting part is uniformly cooled and cooled down, and the service life of the mold is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high-pressure pump part die-casting forming equipment, in particular to a high-pressure pump part die-casting forming device. BACKGROUND

[0002] The existing high-pressure pump shell and cylinder sleeve and other parts are usually manufactured by using a die-casting machine due to complex shape and high precision requirements. The working principle of the existing die-casting machine is that a mold closing system locks a high-pressure pump part mold, then a pressure injection system injects molten metal into the high-pressure pump part mold cavity, then a cooling mechanism rapidly cools the high-pressure pump part mold and the internal part of the mold cavity, and finally the mold closing system separates and unlocks the concave mold and the convex mold of the high-pressure pump part mold, so that the required high-pressure pump part is obtained.

[0003] The cooling mechanism of the high-pressure pump part die-casting machine is usually provided with a serpentine flow channel in the convex mold of the high-pressure pump part mold, and cooperates with an external cooling liquid circulating system to cool the high-pressure pump part in the mold cavity by flowing the cooling liquid in the serpentine flow channel. Since the cooling liquid flows unidirectionally along the serpentine flow channel and continuously absorbs heat during the flowing process, the cooling effect of the cooling liquid gradually deteriorates during the flowing process of the cooling liquid to the outlet of the serpentine flow channel. This not only causes uneven cooling of the surface of the high-pressure pump part, generates internal stress, causes warping deformation or even cracking, and affects the quality of the finished high-pressure pump part, but also causes the surface hardness of the mold to decrease, which causes the mold to wear out and shorten the service life. SUMMARY

[0004] The application aims to provide a high-pressure pump part die-casting forming device which has the effects of uniformly cooling and cooling the high-pressure pump die-casting part and prolonging the service life of the mold.

[0005] The above technical purpose of the application is achieved by the following technical scheme: a high-pressure pump part die-casting forming device, comprising a machine base, a mold closing system arranged on the machine base and used for opening and closing and locking a high-pressure pump part mold, and a pressure injection system arranged on the machine base and used for injecting molten metal into a high-pressure pump part mold cavity, the mold closing system comprises a fixed mold plate fixedly arranged on the machine base and fixedly supporting a convex mold of the high-pressure pump part mold, a sliding mold plate slidingly arranged on the machine base and fixedly supporting a concave mold of the high-pressure pump part mold, a hydraulic drive device driving the sliding mold plate to parallelly approach or move away from the fixed mold plate, and a cooling mechanism arranged on the fixed mold plate and used for cooling the concave mold of the high-pressure pump part mold.

[0006] The cooling mechanism comprises a cooling box body fixed to the side of the fixed mold plate facing the sliding mold plate, a low-temperature chamber and a high-temperature chamber arranged inside the cooling box body and storing cooling liquid, a serpentine pipe fixed inside the cooling box body and crossing the low-temperature chamber and the high-temperature chamber, a liquid exchange channel arranged inside the cooling box body and communicating the low-temperature chamber and the high-temperature chamber, a liquid exchange-out pipe arranged at the top of the cooling box body and having one end communicating the low-temperature chamber, a liquid exchange-in pipe arranged at the top of the cooling box body and having one end communicating the high-temperature chamber, and a liquid exchange pump installed at the top of the cooling box body and communicating the other ends of the liquid exchange-out pipe and the liquid exchange-in pipe, respectively.

[0007] The two ends of the serpentine pipe are fixed to pass through the cooling box body from the low-temperature chamber and the high-temperature chamber, respectively, and are fixedly connected with the input hose and the output hose of the external cooling liquid circulation system, respectively; the high-pressure pump part mold punch is fixed to the side of the cooling box body facing the sliding mold plate, a circular channel for the output end of the injection system to pass through is arranged in the middle of the cooling box body, the circular channel is located between the low-temperature chamber and the high-temperature chamber, and a partition is fixedly arranged in the cooling chamber to separate the three chambers; the liquid exchange channel penetrates the partition between the low-temperature chamber and the high-temperature chamber and is located below the circular channel.

[0008] Further provided in the application is that the cooling box body comprises an oblong box body with an opening facing upward, an oblong box cover connected to the top of the oblong box body by screws and closing the opening of the oblong box, the low-temperature chamber and the high-temperature chamber are respectively communicated with the opening at the top of the oblong box body, the circular channel penetrates the front and back sides of the oblong box body, the partition is arranged in the middle of the interior of the oblong box body and divides the opening at the top of the oblong box body into two parts, the liquid exchange-out pipe, the liquid exchange-in pipe and the liquid exchange pump are installed on the oblong box cover, and the two ends of the serpentine pipe are fixed to pass through the oblong box cover and pass out of the low-temperature chamber and the high-temperature chamber from the two ends of the oblong box cover, respectively.

[0009] Further provided in the application is that a square cavity one is arranged in the interior of the oblong box cover, the serpentine pipe is repeatedly fixed to pass through the oblong box cover, and the top bent part is located in the square cavity one of the oblong box cover, and the bottom bent part is divided into two groups and located in the low-temperature chamber and the high-temperature chamber, respectively.

[0010] The further arrangement of the present application is that the square cavity of the rectangular box cover is internally fixed with a square block, two input flow channels and an output flow channel are formed in the square block and are in communication with each other in the square block, the two input flow channels are parallel to each other, a control chamber is formed in the middle of the square block between the two input flow channels, a rotating shaft one is rotatably arranged in the control chamber, a rotating assembly one for rotating the rotating shaft one is arranged on the square block, the two ends of the rotating shaft one pass through the control chamber and rotatably pass into the two input flow channels respectively, a circular disc plate is fixedly connected to the part of the rotating shaft one extending into the input flow channel, when the circular disc plate is coaxial with the pipe wall of the input flow channel, the liquid flow in the input flow channel can be cut off, the circular disc plates in the two input flow channels are perpendicular to each other and cut off and release the liquid flow in the two input flow channels respectively.

[0011] The input end of the liquid exchange pump and the output flow channel of the square block are provided with a communication pipe, the output flow channel is in T shape, the two ends of the output flow channel are in communication with the two input flow channels respectively, the remaining one end is in communication with the communication pipe, one end of the liquid exchange-out pipe is in communication with one input flow channel on the square block, the other input flow channel on the square block is in communication with a liquid delivery pipe, one end of the liquid delivery pipe fixedly passes out of the square cavity one from one end of the rectangular box cover and is connected with a delivery hose of an external cooling liquid filling container, the liquid exchange pump is fixedly installed on the top of the rectangular box cover, one end of the communication pipe is fixedly connected with the input end of the liquid exchange pump, the other end fixedly passes into the square cavity one and is connected with the output flow channel, one end of the liquid exchange-in pipe is connected with the output end of the liquid exchange pump, the other end fixedly passes through the rectangular box cover and extends into the high-temperature chamber, one end of the liquid exchange-out pipe is connected with the output flow channel, the other end fixedly passes out of the square cavity one and extends into the low-temperature chamber.

[0012] The further arrangement of the present application is that the rotating assembly one comprises a worm gear fixed on the rotating shaft one, a worm shaft rotatably arranged in the control chamber and engaged with the worm gear, and a motor one for driving the worm shaft to rotate, the worm gear and the worm shaft are in transmission engagement in the control chamber, the motor one is fixed on the top of the rectangular box cover, the output end of the motor one continuously rotates and passes into the square cavity one and the control chamber and is fixedly connected with the top end of the worm shaft.

[0013] The further arrangement of the present application is that the liquid exchange channel comprises a circular cavity located at the center of the bottom of the rectangular box body, a first communication port in communication with the circular cavity and the low-temperature chamber, and a second communication port in communication with the circular cavity and the high-temperature chamber, the first communication port and the second communication port are located on both sides of the circular cavity.

[0014] The pair of upper and lower discs are arranged in parallel inside the circular chamber, and the outer contour surfaces of the upper and lower discs are in close contact with the inner contour surface of the circular chamber, the upper disc is located above the first and second communication ports, and the lower disc is located below the first and second communication ports.

[0015] A pair of mutually symmetrical arched filter plates are fixedly connected between the upper and lower discs, and the outer convex surfaces of the arched filter plates are close to the centers of the upper and lower discs, filter holes are uniformly arranged on the arched filter plates, and the outer contour surfaces of the two ends of the arched filter plates are flush with the outer contour surfaces of the upper and lower discs, a filter residue hopper is fixedly arranged at the bottom of the rectangular box body, and a pair of discharge outlets are arranged at the bottom of the rectangular box body and communicate with the filter residue hopper and the circular chamber, a pair of notches are arranged on the lower disc, and the notches are located on the inner concave surfaces of the arched filter plates, when the inner concave surfaces of the arched filter plates are respectively opposite to the first and second communication ports, the notches on the lower disc are staggered with the discharge outlets, and when the outer convex surfaces of the arched filter plates are opposite to the first and second communication ports, the notches on the lower disc are aligned with the discharge outlets.

[0016] Further, the lower end of the filter residue hopper is communicated with the external cooling liquid wastewater pool through a drainage pipe, and the filter residue hopper and the drainage pipe are connected through a ball valve, and the bottoms of the first and second communication ports are flush with the inner bottom of the rectangular box body.

[0017] Further, a circular boss is fixedly arranged at the bottom of the rectangular box body, the circular boss is screw-connected with the top of the filter residue hopper, the two discharge outlets penetrate through the circular boss, and the two discharge outlets are vertically arranged on both sides of the axis of the circular boss.

[0018] Further, the rotating assembly two comprises a square chamber two arranged in the circular boss and located between the two discharge outlets, a rectangular frame sliding in the square chamber two, a rotating shaft two vertically arranged in the square chamber two and located between the rectangular frame, a gear fixedly arranged on the rotating shaft two and located in the square chamber two, a plurality of teeth fixedly arranged on the inner wall of the rectangular frame and engaged with the gear, a screw rod horizontally arranged in the square chamber two and penetrating through the rectangular frame, a nut fixedly arranged on the inner wall of the rectangular frame and engaged with the screw rod, and a motor two driving the screw rod to rotate, the top end of the rotating shaft two penetrates into the circular chamber, and the bottom center of the lower disc is fixedly connected with the top end of the rotating shaft two, a square recess is arranged on the outer wall of the motor two and used for accommodating and fixing the motor two, and the output end of the motor two penetrates into the square chamber two from the bottom of the square recess and is connected with one end of the screw rod.

[0019] The present application has the following advantages:

[0020] When the high-pressure pump part in the mold needs to be cooled, the external cooling liquid circulation system reduces the temperature of the serpentine pipe by continuously feeding the cooling liquid in the serpentine pipe in one direction, then cools the cooling liquid inside the box body, which will reduce its temperature under the temperature change of the serpentine pipe wall, and absorb the heat on the punch through the cooling box. At the same time, the liquid exchange pump uses the exchange pipe, the exchange pipe and the liquid exchange channel to continuously exchange the cooling liquid in the low-temperature room and the cooling liquid in the high-temperature room of the cooling box, so that the cooling liquid near the inlet of the serpentine pipe in the cooling box (the cooling effect of the serpentine pipe is best, and the cooling liquid temperature in this area of the cooling box is lower) and the cooling liquid near the outlet of the serpentine pipe (the cooling effect of the serpentine pipe is poor, and the cooling liquid temperature in this area of the cooling box is higher) are alternately circulated and flowed in the cooling box, and are mixed with each other while flowing, so that the cooling box and the punch are uniformly cooled at different positions with stable and consistent temperature, thereby effectively ensuring the quality of the high-pressure pump part and prolonging the service life of the mold.

[0021] By using the above-mentioned square block internal flow channel, communication pipe and delivery hose conveying structure, and rotating shaft, circular disc and rotating assembly one flow channel opening and closing structure, when the cooling liquid needs to be added or supplemented into the cooling box, the rotating assembly one will drive the rotating shaft one to rotate, so that the two circular discs on the rotating shaft one are respectively turned over relative to the two input flow channels inside the square block. Since the circular disc plates in the two input flow channels are perpendicular to each other and respectively cut off and release the liquid flow in the two input flow channels, the input flow channel connected with the exchange pipe will be closed by one turned circular disc plate, and the input flow channel connected with the liquid delivery pipe will be opened under the turning of the other circular disc plate. Finally, the liquid exchange pump can add the cooling liquid in the external cooling liquid filling container to the cooling box through the liquid delivery pipe, so as to realize the automatic filling effect of the cooling liquid in the cooling box, and fully utilize the conveying function of the liquid exchange pump in the device.

[0022] When the cooling liquid in the cooling box needs to be filtered, the rotating assembly two controls the rotation of the lower disc, so that the two arched filter plates connected between the lower disc and the upper disc are respectively blocked at the communication port one and the communication port two, and the cooling liquid passing through the liquid replacement channel is filtered in this way, and the solid filter residue in the high-temperature chamber is prevented from flowing back into the low-temperature chamber. When the solid filter residue in the high-temperature chamber needs to be cleaned, the rotating assembly two controls the rotation of the lower disc again, so that the gap between the outer convex surfaces of the two arched filter plates is opposite to the communication port one and the communication port two, and the two notches on the lower disc and the two discharge outlets at the bottom of the cooling box are aligned and communicated with each other, so that part of the cooling liquid in the liquid replacement channel flows into the filter residue hopper through the gap between the outer convex surfaces of the two arched filter plates, the filter holes of the arched filter plates, the notches on the lower disc and the discharge outlets at the bottom of the cooling box. Since most of the solid filter residue is accumulated on the inner concave surface of the arched filter plate and in the notch of the lower disc, the solid filter residue on the inner concave surface of the arched filter plate and in the notch of the lower disc is brought into the filter residue hopper together when the cooling liquid flows into the filter residue hopper, so that the automatic cleaning effect of the filter residue is realized. If the ball valve connected between the filter residue hopper and the liquid discharge pipe is opened at this time, the cooling liquid in the cooling box and the filter residue in the filter residue hopper can be quickly discharged, so that the effect of automatically replacing the cooling liquid in the cooling box is realized in cooperation with the above-mentioned cooling liquid filling structure. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of the present embodiment;

[0025] Figure 2 is a schematic diagram of the connection relationship of the high-pressure pump part mold, the cooling box and the sliding template of the present embodiment;

[0026] Figure 3 is a schematic diagram of the cooling mechanism structure of the present embodiment Figure 1 ;

[0027] Figure 4 is a schematic diagram of the cooling mechanism structure of the present embodiment Figure 2 ;

[0028] Figure 5 is a schematic diagram of the cooling mechanism structure of the present embodiment Figure 3 ;

[0029] Figure 6 This is a cross-sectional view of the square block structure in this embodiment;

[0030] Figure 7 yes Figure 5 Enlarged view of point A;

[0031] In the diagram, 1. Base; 2. Fixed template; 3. Sliding template; 4. Hydraulic drive equipment; 5. Cooling mechanism; 51. Cooling box; 511. Rectangular box body; 511a. Partition; 511b. Circular boss; 511c. Discharge port; 511d. Square groove; 512. Rectangular box cover; 512a. Square chamber one; 52. Low temperature chamber; 53. High temperature chamber; 54. Circular channel; 55. Liquid exchange channel; 551. Circular chamber; 552. Connecting port one; 553. Connecting port two; 56. Serpentine pipe; 57. Outlet pipe; 58. Inlet pipe; 59. Liquid exchange pump; 6. Injection system; 7. High-pressure pump parts mold; 8. Square block; 81 82. Input channel; 83. Output channel; 84. Control chamber; 85. Rotating shaft one; 86. Circular disc; 87. Rotating assembly one; 88. Worm gear; 89. Worm; 80. Motor one; 81. Connecting pipe; 82. Infusion pipe; 9. Upper disc; 10. Lower disc; 101. Notch; 102. Rotating assembly two; 102a. Square chamber two; 102b. Rectangular frame; 102c. Rotating shaft two; 102d. Gear; 102e. Gear teeth; 102f. Lead screw; 102g. Nut; 102h. Motor two; 11. Arched filter plate; 111. Filter holes; 12. Filter residue hopper; 121. Drain pipe; 122. Ball valve. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Example: A die-casting molding apparatus for processing high-pressure pump parts, such as... Figures 1-7 As shown, it includes a base 1, a mold closing system mounted on the base 1 for opening, closing and locking of the high-pressure pump part mold 7, and an injection system 6 mounted on the base 1 for injecting molten metal into the cavity of the high-pressure pump part mold 7. The mold closing system includes a fixed template 2 fixedly mounted on the base 1 and fixedly supporting the punch of the high-pressure pump part mold 7, a sliding template 3 slidably mounted on the base 1 and fixedly supporting the die of the high-pressure pump part mold 7, a hydraulic drive device 4 for driving the sliding template 3 to move parallel to or away from the fixed template 2, and a cooling mechanism 5 mounted on the fixed template 2 for cooling the die of the high-pressure pump part mold 7.

[0034] The cooling mechanism 5 includes a cooling box 51 fixed to the side of the fixed mold plate 2 facing the sliding mold plate 3, a low-temperature chamber 52 and a high-temperature chamber 53 arranged inside the cooling box 51 and storing cooling liquid, a serpentine pipe 56 fixed inside the cooling box 51 and crossing the low-temperature chamber 52 and the high-temperature chamber 53, a liquid exchange channel 55 arranged inside the cooling box 51 and communicating the low-temperature chamber 52 and the high-temperature chamber 53, a liquid exchange pump 59 arranged on the top of the cooling box 51 and communicating one end of the liquid exchange outlet pipe 57 and the liquid exchange inlet pipe 58, respectively;

[0035] The two ends of the serpentine pipe 56 are fixed to the low-temperature chamber 52 and the high-temperature chamber 53, respectively, and pass through the cooling box 51, and are fixedly connected to the input hose and the output hose of the external cooling liquid circulation system, respectively. The male die of the high-pressure pump part mold 7 is fixed to the side of the cooling box 51 facing the sliding mold plate 3. The cooling box 51 is provided with a circular channel 54 in the middle for the output end of the injection system 6 to pass through. The circular channel 54 is located between the low-temperature chamber 52 and the high-temperature chamber 53, and a partition 511a is fixedly arranged inside the cooling chamber to separate the three chambers. The liquid exchange channel 55 penetrates the partition 511a between the low-temperature chamber 52 and the high-temperature chamber 53 and is located below the circular channel 54.

[0036] By using the above cooling mechanism 5, when the high-pressure pump part in the mold needs to be cooled, the external cooling liquid circulation system will continuously send cooling liquid in one direction through the serpentine pipe 56 to reduce the temperature of the serpentine pipe 56. Then the cooling liquid inside the cooling box 51 will lower its temperature under the temperature change of the wall of the serpentine pipe 56 and absorb the heat on the male die through the cooling box 51. At the same time, the liquid exchange pump 59 continuously exchanges the cooling liquid in the low-temperature chamber 52 and the high-temperature chamber 53 of the cooling box 51 through the liquid exchange outlet pipe 57, the liquid exchange inlet pipe 58 and the liquid exchange channel 55, so that the cooling liquid near the inlet of the serpentine pipe 56 in the cooling box 51 (the cooling effect of the serpentine pipe 56 is the best, and the temperature of the cooling liquid in this area of the cooling box 51 is lower) and the cooling liquid near the outlet of the serpentine pipe 56 (the cooling effect of the serpentine pipe 56 is poorer, and the temperature of the cooling liquid in this area of the cooling box 51 is higher) flow alternately and intermingle with each other in the cooling box 51, so as to uniformly cool the cooling box 51 and the male die at different positions at a stable and consistent temperature, thereby effectively ensuring the quality of the high-pressure pump part and prolonging the service life of the mold.

[0037] As Figures 3-5As shown, the cooling box 51 includes an open upward rectangular box body 511, a rectangular box cover 512 screw connected to the top of the rectangular box body 511 and closing the rectangular box opening, a low-temperature chamber 52 and a high-temperature chamber 53 respectively communicated with the top opening of the rectangular box body 511, a circular channel 54 passing through the front and rear sides of the rectangular box body 511, a partition 511a arranged in the middle of the interior of the rectangular box body 511 and dividing the top opening of the rectangular box body 511 into two parts, a replacement pipe 57, a replacement pipe 58 and a liquid replacement pump 59 installed on the rectangular box cover 512, and a serpentine pipe 56 fixed at both ends to pass through the rectangular box cover 512 and respectively from both ends of the rectangular box cover 512 to pass through the low-temperature chamber 52 and the high-temperature chamber 53. By adopting the above-mentioned detachable cooling box 51 structure, the staff can quickly clean and maintain the interior of the cooling box 51 and the outer wall of the serpentine pipe.

[0038] As shown in the Figures 3-5 rectangular box cover 512 is internally provided with a square chamber 512a, the serpentine pipe 56 is repeatedly fixed and inserted through the rectangular box cover 512, and the top bent part is located in the square chamber 512a of the rectangular box cover 512, and the bottom bent part is divided into two groups and located in the low-temperature chamber 52 and the high-temperature chamber 53. By adopting the above-mentioned rectangular box cover 512 and serpentine pipe 56 connection structure, not only the serpentine pipe 56 can be stably fixed, but also the serpentine pipe 56 can perfectly cross the low-temperature chamber 52 and the high-temperature chamber 53.

[0039] As shown in the Figures 3-6 The square block 8 is fixedly arranged in the square chamber 512a of the rectangular box cover 512, two input flow channels 81 and an output flow channel 82 are formed in the interior of the square block 8 and communicated with each other in the interior of the square block 8, the two input flow channels 81 are parallel to each other, a control chamber 83 is formed in the middle of the square block 8 between the two input flow channels 81, a rotating shaft 84 is rotatably arranged in the interior of the control chamber 83, a rotating assembly 85 is arranged on the square block 8 to control the rotation of the rotating shaft 84, the two ends of the rotating shaft 84 pass through the control chamber 83 and are rotatably arranged in the two input flow channels 81, respectively, a circular disc plate 841 is fixedly connected to the part of the rotating shaft 84 extending into the input flow channel 81, and when the circular disc plate 841 is coaxial with the pipe wall of the input flow channel 81, the liquid flow in the input flow channel 81 can be cut off, the circular disc plates 841 in the two input flow channels 81 are perpendicular to each other and cut off and release the liquid flow in the two input flow channels 81, respectively;

[0040] The input end of the liquid exchange pump 59 and the output flow channel 82 of the square block 8 are connected by a communication pipe 86. The output flow channel 82 is T-shaped, and the two ends of the output flow channel 82 are connected with two input flow channels 81 respectively, and the remaining end is connected with the communication pipe 86. One end of the liquid exchange pipe 57 is connected with one input flow channel 81 of the square block 8. Another input flow channel 81 of the square block 8 is connected with a liquid delivery pipe 87. One end of the liquid delivery pipe 87 is fixedly connected with the square chamber 512a from one end of the rectangular box cover 512, and is connected with the delivery hose of the external cooling liquid filling container. The liquid exchange pump 59 is fixedly installed on the top of the rectangular box cover 512. One end of the communication pipe 86 is fixedly connected with the input end of the liquid exchange pump 59, and the other end is fixedly connected with the output flow channel 82 in the square chamber 512a. One end of the liquid exchange pipe 58 is connected with the output end of the liquid exchange pump 59, and the other end is fixedly connected with the high-temperature chamber 53 through the rectangular box cover 512. One end of the liquid exchange pipe 57 is connected with the output flow channel 82, and the other end is fixedly connected with the low-temperature chamber 52 through the square chamber 512a.

[0041] By adopting the above-mentioned delivery structure of the internal flow channel of the square block 8, the communication pipe 86 and the delivery hose, and the flow channel opening and closing structure of the rotating shaft, the circular disc plate 841 and the rotating assembly one 85, when it is necessary to add or supplement the cooling liquid into the cooling box 51, the rotating assembly one 85 drives the rotating shaft one 84 to rotate, so that the two circular disc plates on the rotating shaft one 84 are turned over with respect to the two input flow channels 81 in the square block 8. Since the circular disc plates 841 in the two input flow channels 81 are perpendicular to each other, and cut off and release the liquid flow in the two input flow channels 81 respectively, the input flow channel 81 connected with the liquid exchange pipe 57 is closed by the turned-over circular disc plate 841, and the input flow channel 81 connected with the liquid delivery pipe 87 is opened under the turning of the other circular disc plate 841. Finally, the liquid exchange pump 59 can pump the cooling liquid in the external cooling liquid filling container through the liquid delivery pipe 87 and add it into the cooling box 51, so as to realize the automatic filling effect of the cooling liquid in the cooling box 51, and fully exert the delivery function of the liquid exchange pump 59 in the device.

[0042] As Figure 5 , Figure 6As shown, the rotating assembly one 85 includes a worm wheel 851 fixed on the rotating shaft one 84, a worm shaft 852 rotatably arranged in the control chamber 83 and engaged with the worm wheel 851, a motor one 853 driving the worm shaft 852 to rotate, the worm wheel 851 and the worm shaft 852 are in meshing transmission in the control chamber 83, the motor one 853 is fixed on the top of the rectangular box cover 512, the output end of the motor one 853 continuously rotates into the square chamber one 512a and the control chamber 83, and is fixedly connected with the top end of the worm shaft 852. By adopting the above-mentioned rotating assembly one 85, not only the rotating shaft one 84 can be driven to rotate stably, but also the worm wheel 851 and the worm shaft 852 have a self-locking function, which can lock the rotating shaft one 84 from rotating before and after the rotating assembly one 85 works, so as to ensure that the two circular discs on the rotating shaft one 84 can stably cut off or release the liquid flow in the input flow channel 81.

[0043] As shown in the figure, Figures 3-5 As shown, the liquid replacement channel 55 includes a circular chamber 551 located at the center of the bottom of the rectangular box body 511, a communication port one 552 communicating the circular chamber 551 with the low-temperature chamber 52, and a communication port two 553 communicating the circular chamber 551 with the high-temperature chamber 53, the communication port one 552 and the communication port two 553 are located on both sides of the circular chamber 551; a pair of upper and lower parallel upper disc 9 and lower disc 10 are rotatably arranged in the circular chamber 551, and the outer contour surfaces of the upper disc 9 and the lower disc 10 are in close contact with the inner contour surfaces of the circular chamber 551, respectively, the upper disc 9 is located above the communication port one 552 and the communication port two 553, and the lower disc 10 is located below the communication port one 552 and the communication port two 553, the rectangular box body 511 is provided with a rotating assembly two 102 for controlling the rotation of the lower disc 10;

[0044] A pair of mutually symmetrical arcuate filter plates 11 are fixedly connected between the upper disc 9 and the lower disc 10, and the outer convex surfaces of the two arcuate filter plates 11 are close to the centers of the upper disc 9 or the lower disc 10, filter holes 111 are uniformly arranged on the arcuate filter plates 11, and the outer contour surfaces of the two ends are flush with the outer contour surfaces of the upper disc 9 or the lower disc 10, a filter residue hopper 12 is fixedly arranged at the bottom of the rectangular box body 511, a pair of discharge ports 511c are arranged at the bottom of the rectangular box body 511 and communicate the hopper with the circular chamber 551, a pair of notches 101 are arranged on the lower disc 10, and the two notches 101 are located on the inner concave surfaces of the two arcuate filter plates 11, respectively, when the inner concave surfaces of the two arcuate filter plates 11 are respectively opposite to the communication port one 552 and the communication port two 553, the two notches 101 on the lower disc 10 and the two discharge ports 511c are staggered, and when the gaps between the outer convex surfaces of the two arcuate filter plates 11 are opposite to the communication port one 552 and the communication port two 553, the two notches 101 on the lower disc 10 and the two discharge ports 511c are aligned and communicated.

[0045] When the cooling liquid passing through the liquid exchange channel 55 needs to be filtered, the rotating assembly two 102 controls the rotation of the lower disc 10, so that the two arched filter plates 11 connected between the lower disc 10 and the upper disc 9 are respectively blocked at the communication port one 552 and the communication port two 553, thereby filtering the cooling liquid passing through the liquid exchange channel 55 and preventing the solid filter residue in the high-temperature chamber 53 from flowing back into the low-temperature chamber 52.

[0046] As shown in Figures 3-5 The lower end of the filter residue hopper 12 is connected to the external cooling liquid waste pool through a liquid discharge pipe 121, and the filter residue hopper 12 and the liquid discharge pipe 121 are connected through a ball valve 122. The bottom of the communication port one 552 and the communication port two 553 is flush with the inner bottom of the rectangular box body 511. By using the above-mentioned liquid discharge pipe 121 and ball valve 122, if the ball valve 122 connected between the filter residue hopper 12 and the liquid discharge pipe 121 is opened during the above-mentioned filter residue removal process, the cooling liquid in the cooling box 51 and the filter residue in the filter residue hopper 12 can be quickly discharged, thereby realizing the effect of automatically replacing the cooling liquid in the cooling box 51 in cooperation with the above-mentioned cooling liquid filling structure (the internal flow channel of the square block 8, the communication pipe 86, the conveying hose, the rotating shaft, the circular disc plate 841, and the rotating assembly one 85).

[0047] As shown in Figures 3-5As shown, the bottom of the rectangular box body 511 is fixedly provided with a circular boss 511b, and the circular boss 511b is screw-connected to the top of the residue filter hopper 12. Two rows of outlets 511c penetrate the circular boss 511b and are vertically located on both sides of the axial line of the circular boss 511b. Through the circular boss 511b, the residue filter hopper 12 can be conveniently installed and fixed, and the square chamber 102a in the circular boss 511b can also provide installation and movement space for the parts in the following rotating assembly 102.

[0048] As shown in Figures 3-5 , Figure 7 The rotating assembly 102 includes a square chamber 102a opened in the circular boss 511b and located between the two rows of outlets 511c, a rectangular frame 102b sliding in the square chamber 102a, a rotating shaft 102c vertically rotating in the square chamber 102a and located in the middle of the rectangular frame, a gear 102d fixed to the rotating shaft 102c and located in the square chamber 102a, a row of teeth 102e fixed to the inner wall of the rectangular frame and engaged with the gear 102d, a lead screw 102f horizontally rotating in the square chamber 102a and rotating through the rectangular frame 102b, a nut 102g fixed to the inner wall of the rectangular frame 102b and engaged with the lead screw 102f, a motor 102h driving the lead screw 102f to rotate, the top end of the rotating shaft 102c rotating into the circular chamber 551 and fixedly connected to the bottom center of the lower disc 10, a square recess 511d accommodating and fixedly connecting the motor 102h is opened in the outer wall of the motor 102h, and the output end of the motor 102h rotates through the square recess 511d from the groove bottom into the square chamber 102a and is connected to one end of the lead screw 102f.

[0049] Through the rotating assembly 102, when the lower disc 10 needs to rotate, the motor 102h drives the lead screw 102f to rotate, then the nut 102g drives the rectangular frame 102b to slide in the square chamber 102a under the rotation of the lead screw 102f, then a row of teeth 102e on the inner wall of the rectangular frame 102b moves with the rectangular frame 102b and engages the rotating gear 102d during the movement, and finally the gear 102d drives the lower disc 10 to rotate relative to the circular chamber 551 through the rotating shaft 102c, so as to cooperate with the arched filter plate 11 and the upper disc 9 to realize the function switching of filtering the cooling liquid, discharging the residue and the cooling liquid.

Claims

1. A die casting device for machining high-pressure pump parts, comprising a base (1), a mold closing system arranged on the base (1) and used for opening and closing and locking of a high-pressure pump part mold (7), and an injection system (6) arranged on the base (1) and used for injecting molten metal into a cavity of the high-pressure pump part mold (7), characterized in that, The mold closing system comprises a fixed mold plate (2) fixedly arranged on a base (1) and fixedly supporting a male mold of a high-pressure pump part mold (7), a sliding mold plate (3) slidably arranged on the base (1) and fixedly supporting a female mold of the high-pressure pump part mold (7), a hydraulic driving device (4) driving the sliding mold plate (3) to move parallelly towards or away from the fixed mold plate (2), and a cooling mechanism (5) arranged on the fixed mold plate (2) and cooling the female mold of the high-pressure pump part mold (7). The cooling mechanism (5) comprises a cooling box (51) fixed to a side of the fixed mold plate (2) facing the sliding mold plate (3), a low-temperature chamber (52) and a high-temperature chamber (53) arranged inside the cooling box (51) and storing cooling liquid, a serpentine pipe (56) fixed inside the cooling box (51) and crossing the low-temperature chamber (52) and the high-temperature chamber (53), a liquid exchange channel (55) arranged inside the cooling box (51) and communicating the low-temperature chamber (52) and the high-temperature chamber (53), a liquid exchange-out pipe (57) arranged on the top of the cooling box (51) and communicating one end of the low-temperature chamber (52), a liquid exchange-in pipe (58) arranged on the top of the cooling box (51) and communicating one end of the high-temperature chamber (53), and a liquid exchange pump (59) mounted on the top of the cooling box (51) and communicating the other ends of the liquid exchange-out pipe (57) and the liquid exchange-in pipe (58) respectively. The serpentine pipe (56) is fixedly connected with input and output hoses of an external cooling liquid circulating system at two ends thereof and fixedly penetrates the cooling box (51) from the low-temperature chamber (52) and the high-temperature chamber (53) respectively. The male mold of the high-pressure pump part mold (7) is fixed to a side of the cooling box (51) facing the sliding mold plate (3). A circular channel (54) for the output end of a pressure injection system (6) to penetrate is arranged in the middle of the cooling box (51). The circular channel (54) is located in the middle of the low-temperature chamber (52) and the high-temperature chamber (53) and is fixedly provided with a partition (511a) for separating the three chambers. The liquid exchange channel (55) penetrates the partition (511a) between the low-temperature chamber (52) and the high-temperature chamber (53) and is located below the circular channel (54).

2. A die-casting device for machining parts of a high-pressure pump according to claim 1, characterized in that: The cooling box (51) comprises an oblong box body (511) with an opening facing upwards, and an oblong box cover (512) screw-connected to the top of the oblong box body (511) and closing the oblong box opening. The low-temperature chamber (52) and the high-temperature chamber (53) are respectively communicated with the top opening of the oblong box body (511). The circular channel (54) penetrates the front and back sides of the oblong box body (511). The partition (511a) is arranged in the middle of the oblong box body (511) and divides the top opening of the oblong box body (511) into two parts. The liquid exchange-out pipe (57), the liquid exchange-in pipe (58) and the liquid exchange pump (59) are mounted on the oblong box cover (512). The serpentine pipe (56) penetrates the oblong box cover (512) at two ends thereof and penetrates the low-temperature chamber (52) and the high-temperature chamber (53) from the two ends of the oblong box cover (512) respectively.

3. The die-casting device for machining parts of a high-pressure pump according to claim 2, characterized in that: The rectangular box cover (512) is internally provided with a square chamber I (512a), the serpentine pipeline (56) is repeatedly fixedly inserted into the rectangular box cover (512), and the top bent part is located in the square chamber I (512a) of the rectangular box cover (512), and the bottom bent part is located in the low-temperature chamber (52) and the high-temperature chamber (53) respectively.

4. The die-casting device for machining parts of a high-pressure pump according to claim 3, characterized in that: The square chamber I (512a) of the rectangular box cover (512) is internally fixedly provided with a square block (8), two input flow channels (81) and an output flow channel (82) are formed in the square block (8), the two input flow channels (81) and the output flow channel (82) are in communication with each other in the square block (8), the two input flow channels (81) are parallel to each other, a control chamber (83) is formed in the square block (8) and located between the two input flow channels (81), a rotating shaft I (84) is rotatably arranged in the control chamber (83), a rotating assembly I (85) for rotating the rotating shaft I (84) is arranged on the square block (8), the two ends of the rotating shaft I (84) pass through the control chamber (83) and rotatably pass into the two input flow channels (81) respectively, a circular disc plate (841) is fixedly connected to the part of the rotating shaft I (84) extending into the input flow channel (81), when the circular disc plate (841) is coaxial with the pipe wall of the input flow channel (81), the liquid flow in the input flow channel (81) can be cut off, the circular disc plates (841) in the two input flow channels (81) are perpendicular to each other, and the liquid flow in the two input flow channels (81) is cut off and released respectively; The output flow channel (82) is in communication with the input flow channel (81) of the square block (8) through a communication pipe (86), the output flow channel (82) is in T shape, the two ends of the output flow channel (82) are in communication with the two input flow channels (81) respectively, the remaining one end is in communication with the communication pipe (86), one end of the replacement-out pipe (57) is in communication with one input flow channel (81) of the square block (8), the other input flow channel (81) of the square block (8) is in communication with a transfusion pipe (87), one end of the transfusion pipe (87) is fixedly inserted into the square chamber I (512a) from one end of the rectangular box cover (512), and the transfusion pipe (87) is connected with the conveying hose of the external cooling liquid filling container, the replacement pump (59) is fixedly installed on the top of the rectangular box cover (512), one end of the communication pipe (86) is fixedly connected with the input end of the replacement pump (59), the other end of the communication pipe (86) is fixedly inserted into the square chamber I (512a) and connected with the output flow channel (82), one end of the replacement-in pipe (58) is connected with the output end of the replacement pump (59), the other end of the replacement-in pipe (58) is fixedly inserted through the rectangular box cover (512) and extends into the high-temperature chamber (53), one end of the replacement-out pipe (57) is connected with the output flow channel (82), the other end of the replacement-out pipe (57) is fixedly inserted into the square chamber I (512a) and extends into the low-temperature chamber (52).

5. The die-casting device for machining parts of a high-pressure pump according to claim 4, characterized in that: The rotating assembly one (85) comprises a worm wheel (851) fixed on the rotating shaft one (84), a worm (852) rotatably arranged in the control chamber (83) and engaged with the worm wheel (851), and a motor one (853) for driving the worm (852) to rotate, the worm wheel (851) and the worm (852) are engaged and driven in the control chamber (83), the motor one (853) is fixed on the top of the rectangular box cover (512), the output end of the motor one (853) continuously rotates into the square chamber one (512a) and the control chamber (83), and is fixedly connected with the top end of the worm (852).

6. The die-casting device for machining parts of a high-pressure pump according to claim 5, characterized in that: The liquid exchange channel (55) comprises a circular chamber (551) located at the center of the bottom of the rectangular box body (511), a communication port one (552) communicating the circular chamber (551) with the low-temperature chamber (52), and a communication port two (553) communicating the circular chamber (551) with the high-temperature chamber (53), the communication port one (552) and the communication port two (553) are located on both sides of the circular chamber (551); A pair of upper and lower parallel upper disc (9) and lower disc (10) are rotatably arranged in the circular chamber (551), and the outer contour surfaces of the upper disc (9) and the lower disc (10) are in close contact with the inner contour surfaces of the circular chamber (551), the upper disc (9) is located above the communication port one (552) and the communication port two (553), and the lower disc (10) is located below the communication port one (552) and the communication port two (553), the rectangular box body (511) is provided with a rotating assembly two (102) for controlling the rotation of the lower disc (10); A pair of mutually symmetrical arched filter plates (11) are fixedly connected between the upper disc (9) and the lower disc (10), and the outer convex surfaces of the two arched filter plates (11) are close to the centers of the upper disc (9) or the lower disc (10), filter holes (111) are uniformly formed in the arched filter plates (11), and the outer contour surfaces of the two ends are flush with the outer contour surfaces of the upper disc (9) or the lower disc (10), a filter residue hopper (12) is fixedly arranged at the bottom of the rectangular box body (511), and a pair of discharge ports (511c) communicating the hopper with the circular chamber (551) are formed at the bottom of the rectangular box body (511), a pair of notches (101) are formed in the lower disc (10), and the notches (101) are located on one side of the inner concave surfaces of the two arched filter plates (11), respectively, when the inner concave surfaces of the two arched filter plates (11) face the communication port one (552) and the communication port two (553), respectively, the two notches (101) on the lower disc (10) are staggered with the two discharge ports (511c), and when the gaps between the outer convex surfaces of the two arched filter plates (11) face the communication port one (552) and the communication port two (553), respectively, the two notches (101) on the lower disc (10) are aligned with the two discharge ports (511c).

7. The die-casting device for machining parts of a high-pressure pump according to claim 6, characterized in that: The lower end discharge port of the filter residue hopper (12) is communicated with the external cooling liquid waste pool through a drainage pipe (121), and the filter residue hopper (12) and the drainage pipe (121) are connected through a ball valve (122); the bottom of the first communication port (552) and the second communication port (553) is flush with the inner bottom of the rectangular box body (511).

8. The die-casting device for machining parts of a high-pressure pump according to claim 7, characterized in that: The bottom of the rectangular box body (511) is fixedly provided with a circular boss (511b), and the circular boss (511b) is screw-connected to the top of the filter residue hopper (12); the two discharge ports (511c) penetrate through the circular boss (511b), and the two discharge ports (511c) are vertically located on both sides of the axis of the circular boss (511b).

9. The die-casting device for machining parts of a high-pressure pump according to claim 8, characterized in that: The rotating assembly two (102) comprises a square cavity two (102a) which is arranged in the interior of the circular boss (511b) and is located between the two discharge ports (511c), a rectangular frame (102b) which is slidably arranged in the square cavity two (102a), a rotating shaft two (102c) which is vertically arranged in the square cavity two (102a) and is located in the middle of the rectangular frame, a gear (102d) which is fixed to the rotating shaft two (102c) and is located in the square cavity two (102a), a plurality of meshing teeth (102e) which are fixed to the inner wall of the rectangular frame and are engaged with the gear (102d), a lead screw (102f) which is horizontally arranged in the square cavity two (102a) and is rotatably arranged through the rectangular frame (102b), a nut (102g) which is fixed to the inner wall of the rectangular frame (102b) and is engaged with the lead screw (102f), and a motor two (102h) which drives the lead screw (102f) to rotate; the top end of the rotating shaft two (102c) is rotatably arranged in the circular cavity (551) and is fixedly connected to the bottom center of the lower disc (10); the outer wall of the motor two (102h) is provided with a square groove (511d) for accommodating and fixing the motor two (102h), and the output end of the motor two (102h) is rotatably arranged in the square groove (511d) and is connected to one end of the lead screw (102f).

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