Casting forming treatment equipment for hydraulic valve assembly

Abstract

The invention discloses hydraulic valve assembly casting forming processing equipment, and relates to the technical field of casting, the hydraulic valve assembly casting forming processing equipment comprises a rack, the upper part of the rack is provided with a sand outlet mechanism, the middle part of the rack is provided with main mold mechanisms in a bilateral symmetry manner, the rear part of the rack is provided with an auxiliary mechanism, and the rack is provided with mold pressing mechanisms which are distributed in a bilateral symmetry manner; and demolding mechanisms which are symmetrically distributed left and right by taking the sand discharging mechanism as the center are arranged on the rack. Through cooperation of the main mold mechanism, the mold pressing mechanism and the demolding mechanism, rapid demolding is carried out in two modes of mechanical ejection and air injection, adhesion is reduced, breakage or damage during demolding is prevented, and the situation of incomplete demolding is avoided; the mold pressing mechanism, the demolding mechanism and the auxiliary mechanism are matched, the inner wall of the cavity of the auxiliary core box is cleaned in an air blowing mode, chippings are prevented from being attached, and the problems that the surface of a subsequent sand core is rough or uneven or air holes exist are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of casting, and particularly to a casting forming processing device for a hydraulic valve assembly. Background Art

[0002] Hydraulic valves are used to control the direction, pressure, and flow rate of fluids, thereby achieving precise control of actuators (such as hydraulic cylinders or motors). For the valve body part of a hydraulic valve that requires a highly complex internal flow path design, the coated sand process combined with core shooting machine technology can effectively achieve these designs. The coated sand process flow includes: core shooting by the core shooting machine, heating and hardening, removing the sand core or mold, pouring and forming, etc.

[0003] The core shooting machine quickly injects coated sand into the preheated metal mold cavity under high pressure. Once the coated sand is injected into the mold, the resin in the coated sand is cured using the heat of the mold itself or an additional heating system to form a solid sand core. After the sand core is completely cured, demolding is carried out; however, the current demolding method is usually assisted demolding by a single ejection mechanism, and the control of the ejection force and range needs to be accurately grasped, resulting in situations such as fracture, damage, or incomplete demolding during demolding; secondly, there are situations such as debris adhesion on the surface of the mold after demolding, some sand cores failing to smoothly separate from the mold, or blockage of the exhaust holes, leading to problems such as rough, uneven surfaces or poor exhaust on the subsequent sand cores; furthermore, a single operation requires multiple steps of core shooting, curing, and demolding, and the single-operation cycle time is relatively long, and the operation efficiency needs to be improved.

[0004] Therefore, in order to improve the operation efficiency, accurately demold, and clean the mold, the present invention provides a casting forming processing device for a hydraulic valve assembly. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a casting forming processing device for a hydraulic valve assembly.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions: A casting forming processing device for a hydraulic valve assembly, including a frame. An out-sand mechanism is arranged at the upper part of the frame, and main mold mechanisms are symmetrically arranged on the left and right in the middle of the frame. An auxiliary mechanism is arranged at the rear of the frame. Pressing mold mechanisms are symmetrically distributed on the left and right on the frame. The main mold mechanisms are located between the symmetrically distributed pressing mold mechanisms on the left and right, and demolding mechanisms are symmetrically distributed on the left and right with the out-sand mechanism as the center on the frame.

[0007] The die pressing mechanism includes a moving component arranged on the frame for moving left and right alternately for operation, and a demoulding cooperation component arranged on the moving component for die pressing and demoulding operations by cooperating with the main die mechanism; the demoulding mechanism includes an anti-blocking component arranged on the frame for preventing exhaust blockage, and a demoulding driving component arranged on the anti-blocking component for quickly demoulding and cleaning the mould by cooperating with the demoulding cooperation component; the auxiliary mechanism includes a rack corresponding to the demoulding driving component and a scraper corresponding to the main die mechanism. The rack is used to drive the demoulding driving component and the demoulding cooperation component to rotate to expand the cleaning range, and the scraper is used to scrape off the excess waste sand during core shooting.

[0008] In the above-mentioned casting forming processing equipment for a hydraulic valve assembly, the sand discharging mechanism includes a hydraulic cylinder, and the top wall of the frame is symmetrically installed with hydraulic cylinders on the left and right through an inverted L-shaped plate. A left-right oriented slide rail is provided on the frame, and a sand discharging head is slidably connected to the slide rail through an electric slider left and right. The sand discharging head is slidably connected to the electric slider up and down through a first spring.

[0009] In the above-mentioned casting forming processing equipment for a hydraulic valve assembly, the main die mechanism includes a main core box, and a rectangular fixed seat is fixedly connected to the middle of the frame. The side walls of the rectangular fixed seat are symmetrically fixedly connected with main core boxes on the left and right through connecting columns. A demoulding plate slidable on the connecting column is connected to one side of the main core box close to the rectangular fixed seat through a second spring. A plurality of positioning blocks distributed in a matrix are fixedly connected to the demoulding plate, and a plurality of pushing blocks are fixedly connected to the middle of the demoulding plate.

[0010] In the above-mentioned casting forming processing equipment for a hydraulic valve assembly, the moving component includes a sliding seat. Two left-right oriented support rods are symmetrically fixedly connected to the front and back of the frame. A sliding seat symmetrically distributed on the left and right is slidably connected to the two support rods, and the side of the sliding seat close to the frame is connected through a first hydraulic rod. One side of the sliding seat close to the corresponding main core box is hinged with a second hydraulic rod.

[0011] In the above-mentioned casting forming processing equipment for a hydraulic valve assembly, the demoulding cooperation component includes an auxiliary core box, and an auxiliary core box is rotatably connected to one side of the sliding seat close to the corresponding main core box. The output end of the second hydraulic rod is hinged to the side wall of the auxiliary core box. A plurality of exhaust ports are provided on the front and rear side walls of the auxiliary core box.

[0012] In the above-mentioned casting and molding processing equipment for a hydraulic valve assembly, on one side of the auxiliary core box connected to the second hydraulic rod, a plurality of circular holes are arranged in a staggered manner, and a rotating ring is rotatably connected in the circular holes. A pushing column slidably penetrates through the middle of the rotating ring up and down, and fixing strips are symmetrically and fixedly connected to the left and right sides of the side wall of the pushing column. Slots for the fixing strips to slide up and down are arranged on the rotating ring, and a third spring is connected between the fixing strips and the slots. A first gas passage is arranged inside the pushing column, and the first gas passage is composed of a vertical section and an inclined section that slopes upward and is connected to the bottom end of the vertical section. The inclined section penetrates through the outer wall of the pushing column, and the pushing column corresponds to the demolding driving assembly.

[0013] In the above-mentioned casting and molding processing equipment for a hydraulic valve assembly, the anti-blocking assembly includes a third hydraulic rod. The third hydraulic rods are symmetrically installed on the bottom walls of the horizontal sections of the two inverted L-shaped plates in the front-back direction, and a support plate is fixedly connected to the bottom walls of the output ends of the front-back corresponding third hydraulic rods. Connecting rods arranged in a left-right distribution are symmetrically arranged on the support plate in the front-back direction, and the connecting rods are slidably connected to the support plate up and down.

[0014] In the above-mentioned casting and molding processing equipment for a hydraulic valve assembly, a connecting plate that is snap-fitted to the auxiliary core box is fixedly connected to the bottom walls of the left-right corresponding two connecting rods, and a fourth spring sleeved on the connecting rods is connected between the bottom wall of the connecting plate and the bottom wall of the support plate. A first connecting head corresponding to the exhaust port is arranged on one side of the front-back corresponding connecting plates close to each other, and a second connecting head corresponding to the circular holes on the auxiliary core box is arranged on the support plate. The first connecting head and the second connecting head are jointly connected to an external air pump through an air vent pipe.

[0015] In the above-mentioned casting and molding processing equipment for a hydraulic valve assembly, the demolding driving assembly includes a docking rod, and the docking rod is rotatably connected to the bottom of the second joint. A gear rotatably connected to the bottom wall of the support plate is sleeved on the outer wall of the docking rod. A second gas passage is arranged inside the docking rod, with the top being docked with the second connecting head and the bottom being docked with the first gas passage, and the bottom wall of the docking rod is snap-fitted to the top wall of the pushing column.

[0016] In the above-mentioned casting and molding processing equipment for a hydraulic valve assembly, the auxiliary mechanism further includes a support frame fixedly connected to the rear side wall of the frame, and two sliding frames installed in a staggered manner are slidably connected to the support frame in the front-back direction. The upper end of the sliding frame is of a U-shaped structure, and a rack and a scraper are respectively fixedly connected to the ends of the two horizontal sections of the U-shaped structure of the sliding frame.

[0017] Compared with the existing technology, the advantages of the present invention are as follows: 1. Through the cooperation of the main mold mechanism, the pressing mold mechanism and the demolding mechanism, rapid demolding is carried out by two methods of mechanical ejection and air injection, reducing adhesion, preventing fracture or damage during demolding, and avoiding incomplete demolding; the demolding plate drives the pushing block to eject, pushing the sand core to quickly separate from the main core box; the first connector is engaged with the exhaust port, the second connector is connected to the pushing column through the docking rod, and air is injected to prevent the exhaust port from being blocked by the coated sand particles. At the same time, the gas passes through the gap between the sand core and the auxiliary core box, reducing the adhesion between the sand core and the surface of the auxiliary core box and facilitating the peeling of the sand core; the pushing column ejects the sand core.

[0018] 2. Through the cooperation of the pressing mold mechanism, the demolding mechanism and the auxiliary mechanism, the inner wall of the cavity of the auxiliary core box is cleaned by blowing air, preventing debris from adhering, and avoiding problems such as roughness, unevenness or pores that may appear on the surface of the subsequent sand core; the bottom end of the pushing column moves down until the inclined section of the first gas channel partially enters the cavity of the auxiliary core box, and air is blown into the cavity of the auxiliary core box through the guidance of the inclined section of the first gas channel; through the cooperation of the rack and the gear, the range of cleaning the inner wall of the cavity of the auxiliary core box becomes larger, improving the cleaning efficiency.

[0019] 3. Through the two sets of main mold mechanisms, pressing mold mechanisms and auxiliary mechanisms provided, alternating operations are carried out on the left and right sides, avoiding a long single operation cycle time and improving the operation efficiency; when the sand discharging mechanism performs core shooting operations with the main mold mechanism and the pressing mold mechanism on one side, the pressing mold mechanism, the demolding mechanism and the auxiliary mechanism on the other side perform demolding and cleaning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further details the specific embodiments of the present invention with reference to the drawings, where: Figure 1 It is a schematic structural diagram of the whole.

[0021] Figure 2 It is Figure 1 a schematic structural diagram of another perspective of

[0022] Figure 3 It is a partial structural diagram of the sand discharging mechanism and the main mold mechanism.

[0023] Figure 4 It is a schematic diagram of the changes before and after the demolding plate demolds.

[0024] Figure 5 It is a partial structural diagram of the main mold mechanism and the pressing mold mechanism.

[0025] Figure 6 It is a schematic structural diagram before the pressing mold mechanism and the demolding mechanism are docked.

[0026] Figure 7 It is a schematic structural diagram after the pressing mold mechanism and the demolding mechanism are docked.

[0027] Figure 8 Schematic diagrams of the changes before and after the docking of the docking rod and the pushing column.

[0028] Figure 9 Partial structural schematic diagram of the auxiliary mechanism.

[0029] Figure 10 Partial structural schematic diagram of the demolding mechanism and the auxiliary mechanism.

[0030] In the figure: 1, frame; 2, sand discharging mechanism; 21, slide rail; 22, sand discharging head; 23, hydraulic cylinder; 3, main mold mechanism; 31, main core box; 32, demolding plate; 33, positioning block; 34, pushing block; 4, mold pressing mechanism; 41, moving component; 411, sliding seat; 412, first hydraulic rod; 413, second hydraulic rod; 42, demolding cooperation component; 421, auxiliary core box; 422, exhaust port; 423, pushing column; 424, first gas channel; 425, fixing strip; 426, rotating ring; 5, demolding mechanism; 51, anti-blocking component; 511, third hydraulic rod; 512, support plate; 513, connecting rod; 514, connecting plate; 515, ventilation pipeline; 52, demolding driving component; 521, docking rod; 522, gear; 523, second gas channel; 6, auxiliary mechanism; 61, support frame; 62, sliding frame; 63, rack; 64, scraper. Specific implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Refer to Figures 1 to 2 , a hydraulic valve assembly casting and molding processing device, including a frame 1, a sand discharging mechanism 2 is arranged on the upper part of the frame 1, a main mold mechanism 3 is symmetrically arranged on the left and right in the middle of the frame 1, an auxiliary mechanism 6 is arranged at the rear of the frame 1, mold pressing mechanisms 4 are symmetrically distributed on the left and right on the frame 1, the main mold mechanism 3 is located between the symmetrically distributed mold pressing mechanisms 4 on the left and right, and a demolding mechanism 5 is symmetrically distributed on the left and right with the sand discharging mechanism 2 as the center on the frame 1.

[0033] The main mold mechanism 3 and the corresponding die pressing mechanism 4 cooperate to form a cavity. The coated sand is fed into the core shooting by the sand discharging mechanism 2. After the left cavity is fed with sand by the sand discharging mechanism 2, during the process of curing the core by the main mold mechanism 3 and the die pressing mechanism 4, the sand discharging mechanism 2 transfers to the right cavity for core shooting feeding, so as to facilitate the alternating operation on both sides and improve the efficiency. After the core is cured, the die pressing mechanism 4 and the demolding mechanism 5 cooperate to demold. The demolding mechanism 5 and the auxiliary mechanism 6 cooperate to clean the mold. A buffer material receiving and conveying mechanism (not shown in the figure and is an existing device, so it will not be elaborated here) is arranged below the frame 1 to convey the demolded core. A waste sand collection tank (not shown in the figure) is arranged below the frame 1 to collect the waste sand uniformly.

[0034] Refer to Figure 3 , the sand discharging mechanism 2 includes a hydraulic cylinder 23. The top wall of the frame 1 is symmetrically installed with hydraulic cylinders 23 on the left and right through an inverted L-shaped plate. A left-right oriented sliding rail 21 is provided on the frame 1. A sand discharging head 22 is slidably connected to the sliding rail 21 through an electric slider. The sand discharging head 22 is slidably connected to the electric slider up and down through a first spring (not shown in the figure).

[0035] Refer to Figures 3 to 4 , the main mold mechanism 3 includes a main core box 31. A rectangular fixed seat is fixedly connected to the middle of the frame 1. The side walls of the rectangular fixed seat are symmetrically and fixedly connected with main core boxes 31 on the left and right through connecting columns (not shown in the figure). One side of the main core box 31 close to the rectangular fixed seat is connected with a demolding plate 32 that slides on the connecting column through a second spring (not shown in the figure). A plurality of positioning blocks 33 distributed in a matrix are fixedly connected to the demolding plate 32. A plurality of pushing blocks 34 are fixedly connected to the middle of the demolding plate 32.

[0036] Refer to Figure 1 and Figure 5 , the die pressing mechanism 4 includes a moving component 41 arranged on the frame 1 for left-right alternating movement operation and a demolding cooperation component 42 arranged on the moving component 41 for die pressing and demolding operations in cooperation with the main mold mechanism 3. The moving component 41 includes a sliding seat 411. Two left-right oriented support rods are symmetrically and fixedly connected to the front and back of the frame 1. The sliding seat 411 is slidably connected to the two support rods and is symmetrically distributed on the left and right. One side of the sliding seat 411 close to the frame 1 is connected by a first hydraulic rod 412. One side of the sliding seat 411 close to the corresponding main core box 31 is hinged with a second hydraulic rod 413.

[0037] Refer to Figures 5 to 8, the demoulding fitting assembly 42 includes an auxiliary core box 421. The auxiliary core box 421 is rotatably connected to the side of the sliding seat 411 close to the corresponding main core box 31. The output end of the second hydraulic rod 413 is hinged to the side wall of the auxiliary core box 421. A plurality of exhaust ports 422 are provided on the front and rear side walls of the auxiliary core box 421; a plurality of staggered round holes are provided on the side of the auxiliary core box 421 connected to the second hydraulic rod 413. A rotating ring 426 is rotatably connected in the round holes. The middle part of the rotating ring 426 slides through a pushing column 423 vertically (at this time, the auxiliary core box 421 is in the Figure 7 state shown). The side wall of the pushing column 423 is symmetrically and fixedly connected with fixing strips 425 on the left and right. Slots for the fixing strips 425 to slide up and down are provided on the rotating ring 426. A third spring (not shown in the figure) is connected between the fixing strips 425 and the slots. A gas channel 424 is provided inside the pushing column 423. The gas channel 424 is composed of a vertical section and an inclined section connected to the bottom end of the vertical section and inclined upward. The inclined section penetrates the outer wall of the pushing column 423.

[0038] Before core shooting, the output end of the second hydraulic rod 413 contracts to drive the auxiliary core box 421 to rotate to the vertical state. The output end of the first hydraulic rod 412 extends to drive the sliding seat 411 to slide towards the main core box 31. The sliding seat 411 drives the auxiliary core box 421 to move towards the main core box 31 until the auxiliary core box 421 and the main core box 31 are closed to form a cavity. A core shooting port is provided on the top wall at the closing position of the auxiliary core box 421 and the main core box 31; when the auxiliary core box 421 gradually clings to the main core box 31, it pushes the positioning block 33 to drive the demoulding plate 32 away from the corresponding main core box 31, and the second spring is stretched.

[0039] During core shooting, the upper end of the sand outlet head 22 is connected to a sand hopper (not shown in the figure) through a pipeline. The sand hopper provides a sand source for the sand outlet head 22 to ensure sufficient sand supply. Before core shooting and feeding, the electric slider drives the sand outlet head 22 to slide on the slide rail 21 to the corresponding feeding position on the left or right. The bottom wall of the output end of the hydraulic cylinder 23 moves downward to push the sand outlet head 22 to slide downward on the electric slider until the bottom wall of the sand outlet head 22 is aligned with the corresponding core shooting port. Compressed air shoots the coated sand into the cavity formed by the auxiliary core box 421 and the main core box 31 at a high speed from the sand outlet head 22. The sand grains are compacted under pressure to fill the cavity. The exhaust ports 422 are used to discharge the excess air in the cavity during core shooting.

[0040] After core shooting, the auxiliary core box 421 and the main core box 31 are electrically heated. The resin in the coated sand melts and solidifies to form a high-strength sand core. During demoulding, the extended end of the first hydraulic rod 412 contracts to drive the sliding seat 411 to reset. When the auxiliary core box 421 moves away from the main core box 31, the pushing force on the positioning block 33 is gradually released. The second spring drives the demoulding plate 32 to slide along the connecting column towards the corresponding main core box 31. The demoulding plate 32 drives the pushing block 34 to eject, pushing the sand core to quickly separate from the main core box 31 (as Figure 4 shown).

[0041] Refer to Figure 1 and Figure 6 , the demolding mechanism 5 includes a clogging prevention component 51 arranged on the frame 1 for preventing exhaust clogging and a demolding drive component 52 arranged on the clogging prevention component 51 for quickly demolding and cleaning the mold by cooperating with the demolding cooperation component 42.

[0042] Refer to Figure 1 , Figure 6 , Figure 7 and Figure 8 , the clogging prevention component 51 includes a third hydraulic rod 511. The bottom walls of the horizontal sections of the two inverted L-shaped plates are symmetrically installed with third hydraulic rods 511 front and back. The bottom walls of the output ends of the corresponding third hydraulic rods 511 front and back are fixedly connected to a support plate 512. The support plate 512 is symmetrically provided with connecting rods 513 distributed left and right. The connecting rods 513 are slidably connected to the support plate 512 up and down; the bottom walls of the corresponding two connecting rods 513 on the left and right are jointly fixed with a connecting plate 514 that is snap-fitted with the auxiliary core box 421. A fourth spring sleeved on the connecting rod 513 is connected between the connecting plate 514 and the bottom wall of the support plate 512. On the side where the corresponding connecting plates 514 on the front and back are close to each other, there is a first connecting head corresponding to the exhaust port 422. The support plate 512 is provided with a second connecting head corresponding to the round hole on the auxiliary core box 421. The first connecting head and the second connecting head are jointly connected to an external air pump (not shown in the figure) through a ventilation pipe 515.

[0043] Refer to Figure 6 , Figure 7 , Figure 8 and Figure 10 , the demolding drive component 52 includes a docking rod 521. The bottom of the second joint is rotatably connected to the docking rod 521. A gear 522 rotatably connected to the bottom wall of the support plate 512 is sleeved on the outer wall of the docking rod 521. A second gas channel 523 is opened inside the docking rod 521, with the top docked with the second connecting head and the bottom docked with the first gas channel 424. The bottom wall of the docking rod 521 is snap-fitted with the top wall of the pushing column 423.

[0044] Refer to Figure 2 , Figure 9 and Figure 10 , the auxiliary mechanism 6 includes a rack 63 corresponding to the demolding drive component 52 and a scraper 64 corresponding to the main mold mechanism 3. The rack 63 is used to drive the demolding drive component 52 and the demolding cooperation component 42 to rotate to expand the cleaning range. The scraper 64 is used to scrape off the excess waste sand during core shooting; the auxiliary mechanism 6 also includes a support frame 61 fixedly connected to the rear side wall of the frame 1. Two sliding frames 62 installed in a staggered manner are slidably connected to the support frame 61 front and back. The upper end of the sliding frame 62 is of a U-shaped structure. The rack 63 and the scraper 64 are respectively fixedly connected to the ends of the two horizontal sections of the U-shaped structure of the sliding frame 62.

[0045] Reference Figures 6 to 8 The output end of the second hydraulic rod 413 extends out to drive the auxiliary core box 421 to rotate on the sliding seat 411, and the auxiliary core box 421 changes from a vertical state to a horizontal state. The sand core rotates to face downward, and the output end of the third hydraulic rod 511 moves downward to drive the support plate 512, the connecting rod 513, and the connecting plate 514 to move downward. The connecting plate 514 gradually approaches the corresponding auxiliary core box 421 and engages with it. The connector 1 is in a semicircular shape with an opening downward, and the exhaust port 422 is in a semicircular shape with an opening upward. The connector 1 is docked and engaged with the exhaust port 422. Connector 2 is connected to pushing column 423 through docking rod 521, and rubber gasket can be installed to ensure the sealing of connection between connector 1 and exhaust port 422, connector 2 and docking rod 521, and docking rod 521 and pushing column 423. The air pump injects air into auxiliary core box 421 through ventilation pipe 515 and connector 1 to prevent exhaust port 422 from being blocked by coated sand particles. At the same time, gas passes through the gap between the sand core and the auxiliary core box 421 to reduce the adhesion between the sand core and the surface of the auxiliary core box 421, which facilitates the stripping of the sand core.

[0046] The hydraulic rod 3 511 continues to push downward, the connecting plate 514 stops moving after being engaged, the support plate 512 slides downward on the connecting rod 513, the spring 4 is compressed, the docking rod 521 drives the pushing column 423 and the fixing bar 425 to move downward in the rotating ring 426, the spring 3 is compressed, the bottom end of the pushing column 423 pushes the sand core to push the sand core out, and the sand core is quickly separated from the auxiliary core box 421, and the pushing column 423 can be set in a part of the position that is not easy to demold, to prevent breakage or damage during demolding, and avoid demolding Incomplete situation; the bottom end of the pushing column 423 moves downward until the inclined section of the gas channel 424 enters the cavity of the auxiliary core box 421, and the air pump allows air to enter the auxiliary core box 421 through the ventilation pipe 515, the second connector, the gas channel 523 and the gas channel 424. The air blown out is guided by the inclined section of the gas channel 424 to clean the inner wall of the cavity of the auxiliary core box 421 to prevent debris from sticking to it and avoid problems such as roughness, unevenness or pores on the surface of the subsequent sand core (such as Figure 8 as shown).

[0047] The sliding frame 62 is fixedly connected with a rack 63 corresponding to and adapted to the gear 522. The sliding frame 62 slides forward on the support frame 61, driving the rack 63 to move toward the corresponding gear 522 (such as Figure 10As shown in the figure, the movement of the rack 63 drives the rotation of the gear 522 and the docking rod 521. The rotation of the docking rod 521 drives the rotation of the pushing column 423, causing the position of the first gas passage 424 to change. As a result, the position of the air blown out from the first gas passage 424 changes, increasing the range of cleaning the inner wall of the cavity of the auxiliary core box 421 and improving the cleaning efficiency. At the same time, the sliding frame 62 slides forward on the support frame 61, driving the scraper 64 to scrape the waste sand at the core shooting ports of the main core box 31 and the auxiliary core box 421 corresponding to the alternating operation area, and timely cleaning the top surface after core shooting to prevent adhesion of waste sand (as Figure 1 shown).

[0048] The specific operation steps of this hydraulic valve assembly casting and molding processing equipment are as follows: The auxiliary core box 421 rotates to the vertical state, slides towards the main core box 31, and the two are closely attached to form a cavity. The sand outlet head 22 moves to align with the core shooting port, and compressed air injects the coated sand into the cavity formed by the auxiliary core box 421 and the main core box 31 at a high speed from the sand outlet head 22. After core shooting, the auxiliary core box 421 and the main core box 31 are energized and heated, and the resin in the coated sand melts and solidifies to form a high-strength sand core.

[0049] During demolding, the auxiliary core box 421 moves horizontally to reset, the demolding plate 32 drives the pushing block 34 to eject, pushing the sand core to quickly separate from the main core box 31. The auxiliary core box 421 changes from the vertical state to the horizontal state, and the sand core rotates downward. The anti-blocking assembly 51 moves downward, and the air pump passes air through the ventilation pipe 515 to prevent the exhaust port 422 from being blocked by coated sand particles. At the same time, the gas passes through the gap between the sand core and the auxiliary core box 421, reducing surface adhesion. The bottom end of the pushing column 423 pushes the sand core, ejecting the sand core. Under the guidance of the inclined section of the first gas passage 424, the blown air cleans the inner wall of the cavity of the auxiliary core box 421 to prevent debris adhesion.

[0050] The auxiliary mechanism 6 assists the first gas passage 424 to blow air towards the inner wall of the cavity of the auxiliary core box 421, increasing the range of cleaning, and the scraper 64 scrapes the waste sand at the core shooting ports of the main core box 31 and the auxiliary core box 421 corresponding to the alternating operation area.

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered within the protection scope of the present invention.

Claims

1. A casting and forming processing device for a hydraulic valve assembly, including a frame, characterized in that, An out-sanding mechanism is arranged at the upper part of the frame, a main mold mechanism is symmetrically arranged on the left and right at the middle part of the frame, an auxiliary mechanism is arranged at the rear part of the frame, a die pressing mechanism is symmetrically distributed on the frame, the main mold mechanism is located between the symmetrically arranged die pressing mechanisms on the left and right, and a demolding mechanism symmetrically distributed with the out-sanding mechanism as the center is arranged on the frame. The die pressing mechanism includes a moving component arranged on the frame for alternately moving left and right for operation and a demolding cooperation component arranged on the moving component for performing die pressing and demolding operations by cooperating with the main mold mechanism. The demolding mechanism includes an anti-blocking component arranged on the frame for preventing exhaust blockage and a demolding driving component arranged on the anti-blocking component for performing rapid demolding and cleaning the mold by cooperating with the demolding cooperation component. The auxiliary mechanism includes a rack corresponding to the demolding driving component and a scraper corresponding to the main mold mechanism. The rack is used to drive the demolding driving component and the demolding cooperation component to rotate to expand the cleaning range, and the scraper is used to scrape off the excess waste sand during core shooting.

2. The casting and molding processing equipment for a hydraulic valve assembly according to claim 1, characterized in that, The out-sanding mechanism includes a hydraulic cylinder, and hydraulic cylinders are symmetrically installed on the left and right on the top wall of the frame through inverted L-shaped plates. A left-right facing slide rail is opened on the frame, and a sand outlet head is slidably connected to the slide rail through an electric slider left and right. The sand outlet head is slidably connected to the electric slider up and down through a first spring.

3. A casting and forming processing device for a hydraulic valve assembly according to claim 1, characterized in that The main mold mechanism includes a main core box, and a rectangular fixed seat is fixedly connected to the middle part of the frame. The side walls of the rectangular fixed seat are symmetrically fixedly connected with the main core box through connecting columns on the left and right. A demolding plate slidably arranged on the connecting columns is connected to one side of the main core box close to the rectangular fixed seat through a second spring. A plurality of positioning blocks distributed in a matrix are fixedly connected to the demolding plate, and a plurality of pushing blocks are fixedly connected to the middle part of the demolding plate.

4. A casting processing device for a hydraulic valve assembly according to claim 3, characterized in that The moving component includes a sliding seat. Two left-right facing support rods are symmetrically fixedly connected to the front and rear of the frame. A symmetrically distributed sliding seat on the left and right is slidably connected to the two support rods, and one side of the sliding seat close to the frame is connected through a first hydraulic rod. One side of the sliding seat close to the corresponding main core box is hinged with a second hydraulic rod.

5. A casting and forming processing device for a hydraulic valve assembly according to claim 4, characterized in that, The demolding cooperation component includes an auxiliary core box, and an auxiliary core box is rotatably connected to one side of the sliding seat close to the corresponding main core box. The output end of the second hydraulic rod is hinged to the side wall of the auxiliary core box, and a plurality of exhaust ports are opened on the front and rear side walls of the auxiliary core box.

6. The casting and forming processing equipment for a hydraulic valve assembly according to claim 5, characterized in that, A plurality of staggered circular holes are opened on one side of the auxiliary core box connected with the second hydraulic rod, and a rotating ring is rotatably connected in the circular holes. A pushing column slidably penetrates through the middle of the rotating ring up and down. Fixing strips are symmetrically fixedly connected to the side wall of the pushing column on the left and right. A slot for the fixing strips to slide up and down is opened on the rotating ring. A third spring is connected between the fixing strip and the slot. A first gas channel is opened inside the pushing column, and the first gas channel is composed of a vertical section and an upward inclined section connected to the bottom end of the vertical section. The inclined section penetrates through the outer wall of the pushing column, and the pushing column corresponds to the demolding driving component.

7. A casting and molding processing device for a hydraulic valve assembly according to claim 6, characterized in that, The anti-blocking component includes a third hydraulic rod. The bottom walls of the horizontal sections of the two inverted L-shaped plates are symmetrically installed with third hydraulic rods on the front and rear. The bottom walls of the output ends of the corresponding third hydraulic rods on the front and rear are jointly fixedly connected with a support plate. Connecting rods are symmetrically arranged on the left and right on the support plate, and the connecting rods are slidably connected to the support plate up and down.

8. A casting and forming processing device for a hydraulic valve assembly according to claim 7, characterized in that, The bottom walls of the two corresponding left and right connecting rods are jointly fixed with a connecting plate that is snap-fitted to the auxiliary core box, and a fourth spring sleeved outside the connecting rod is connected between the connecting plate and the bottom wall of the support plate. On one side of the front and rear corresponding connecting plates that are close to each other, there is a first connector corresponding to the exhaust port, and a second connector corresponding to the round hole on the auxiliary core box is arranged on the support plate. The first connector and the second connector are jointly connected to an external air pump through a ventilation pipe.

9. The casting and forming processing equipment for a hydraulic valve assembly according to claim 7, characterized in that, The demolding driving assembly includes a docking rod, and a docking rod is rotatably connected to the bottom of the second connector. A gear rotatably connected to the bottom wall of the support plate is sleeved on the outer wall of the docking rod. A second gas passage is opened inside the docking rod, the top of which is docked with the second connector and the bottom of which is docked with the first gas passage, and the bottom wall of the docking rod is snap-fitted to the top wall of the pushing column.

10. A casting and molding processing device for a hydraulic valve assembly according to claim 1, characterized in that, The auxiliary mechanism further includes a support frame fixedly connected to the rear side wall of the frame, and two misaligned sliding frames are slidably connected to the support frame in the front and rear directions. The upper end of the sliding frame is of a U-shaped structure, and a rack and a scraper are respectively fixedly connected to the ends of the two horizontal sections of the U-shaped structure of the sliding frame.

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