A hydraulic valve assembly casting and molding processing equipment

Abstract

The present invention discloses a hydraulic valve assembly casting molding processing equipment, which relates to the field of casting technology and includes a frame, a sand discharge mechanism is provided on the upper part of the frame, a main mold mechanism is symmetrically provided in the middle part of the frame, an auxiliary mechanism is provided at the rear part of the frame, a pressing mold mechanism is provided on the frame and a demoulding mechanism is symmetrically distributed with the sand discharge mechanism as the center. The present invention cooperates with the main mold mechanism, the pressing mold mechanism and the demoulding mechanism to quickly demould by mechanical ejection and air injection, thereby reducing adhesion, preventing breakage or damage during demoulding, and avoiding incomplete demoulding; the pressing mold mechanism, the demoulding mechanism and the auxiliary mechanism cooperate to clean the inner wall of the auxiliary core box cavity by blowing air, thereby preventing debris from adhering and avoiding problems such as roughness, unevenness or the presence of air holes on the subsequent sand core surface.

Description

Technical Field

[0001] The present invention relates to the field of casting technology, and in particular to a hydraulic valve component casting and molding processing equipment. Background Art

[0002] Hydraulic valves are used to control the direction, pressure, and flow of fluids, thereby achieving precise control of actuators (such as hydraulic cylinders or motors). For hydraulic valve bodies that require highly complex internal flow channel designs, the coated sand process combined with core shooting machine technology can effectively realize these designs. The coated sand process includes: core shooting machine sand shooting, heating and hardening, removing the sand core or casting, casting molding, etc.

[0003] The core shooter uses high pressure to quickly shoot coated sand into the preheated metal mold cavity. Once the coated sand is injected into the mold, the heat of the mold itself or an additional heating system is used to solidify the resin in the coated sand to form a solid sand core. After the sand core is completely solidified, it is demolded. However, the current demolding method is usually a single ejection mechanism to assist in demolding. The control of the ejection force and range requires precise control, and there is a risk of breakage, damage, or incomplete demolding during demolding. Secondly, after demolding, there are debris attached to the surface of the mold, some sand cores fail to smoothly leave the mold, or the exhaust holes are clogged, which may cause the subsequent sand core surface to become rough, uneven, or have poor exhaust. Furthermore, a single operation requires multiple steps of core shooting, curing, and demolding. The single operation cycle time is long, and the operation efficiency needs to be improved.

[0004] Therefore, in order to improve operating efficiency, accurately demould and clean the mold, the present invention provides a hydraulic valve assembly casting molding processing equipment. 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 hydraulic valve assembly casting molding processing equipment.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A hydraulic valve assembly casting and molding processing equipment includes a frame, a sand discharge mechanism is provided on the upper part of the frame, a main mold mechanism is symmetrically provided on the middle part of the frame, an auxiliary mechanism is provided on the rear part of the frame, and a left-right symmetrically distributed pressing mold mechanism is provided on the frame, the main mold mechanism is located between the left-right symmetrical pressing mold mechanisms, and a demolding mechanism is provided on the frame, which is symmetrically distributed on the left-right with the sand discharge mechanism as the center.

[0008] The molding mechanism includes a moving assembly arranged on the frame for alternating left and right movement, and a demolding matching assembly arranged on the moving assembly for performing molding and demolding operations by cooperating with the main molding mechanism; the demolding mechanism includes an anti-blocking assembly arranged on the frame for preventing exhaust blockage, and a demolding drive assembly arranged on the anti-blocking assembly for quickly demolding and cleaning the mold by cooperating with the demolding matching assembly; the auxiliary mechanism includes a rack corresponding to the demolding drive assembly and a scraper corresponding to the main molding mechanism, the rack is used to drive the demolding drive assembly and the demolding matching assembly to rotate to expand the cleaning range, and the scraper is used to scrape off excess waste sand during core shooting.

[0009] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, the sand-discharging mechanism includes a hydraulic cylinder, and the hydraulic cylinder is symmetrically installed on the top wall of the frame through an inverted L-shaped plate. The frame is provided with left and right sliding rails, and the slide rails are connected to a sand-discharging head through an electric slider for left and right sliding. The sand-discharging head is connected to the electric slider for up and down sliding through a spring.

[0010] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, the main mold 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 to the main core box through connecting columns, and the side of the main core box close to the rectangular fixed seat is connected to a stripping plate sliding on the connecting column through spring 2, a plurality of positioning blocks distributed in a matrix are fixedly connected to the stripping plate, and a plurality of pushing blocks are fixedly connected to the middle of the stripping plate.

[0011] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, the moving assembly includes a sliding seat, and two support rods are fixedly connected to the frame in a symmetrical manner in the front and back and facing left and right. The two support rods are commonly slidably connected to the sliding seats that are symmetrically distributed in the left and right directions. The sliding seat is connected to the side close to the frame through hydraulic rod 1, and the side of the sliding seat close to the corresponding main core box is hinged with hydraulic rod 2.

[0012] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, the demolding matching assembly includes an auxiliary core box, and the sliding seat is rotatably connected to the auxiliary core box on one side 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 multiple exhaust ports are opened on the front and rear side walls of the auxiliary core box.

[0013] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, a plurality of staggered circular holes are provided on one side of the auxiliary core box connected to the hydraulic rod 2, and a rotating ring is rotatably connected in the circular hole. A pushing column is passed through the middle of the rotating ring for sliding up and down, and a fixed bar is fixedly connected to the side wall of the pushing column symmetrically on the left and right. A groove for the fixed bar to slide up and down is provided on the rotating ring, and a spring three is connected between the fixed bar and the groove. A gas channel 1 is provided inside the pushing column, and the gas channel 1 consists of a vertical section and an upwardly inclined inclined section connected to the bottom end of the vertical section. The inclined section passes through the outer wall of the pushing column, and the pushing column corresponds to the demolding drive assembly.

[0014] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, the anti-blocking component includes a hydraulic rod three, and the bottom walls of the horizontal sections of the two inverted L-shaped plates are symmetrically installed with hydraulic rods three, and the output end bottom walls of the corresponding front and rear hydraulic rods three are commonly fixedly connected to a support plate, and the support plate is symmetrically arranged with connecting rods distributed left and right, and the connecting rods are connected to the support plate in an up and down sliding manner.

[0015] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, the bottom walls of the two corresponding connecting rods on the left and right are commonly fixed with a connecting plate that is engaged with the auxiliary core box, and a spring four is connected between the connecting plate and the bottom wall of the support plate and is sleeved on the outside of the connecting rod. A connector one corresponding to the exhaust port is provided on the side where the front and rear corresponding connecting plates are close to each other, and a connector two corresponding to the circular hole on the auxiliary core box is provided on the support plate. The connector one and the connector two are jointly connected to the external air pump through a ventilation pipe.

[0016] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, the demolding drive assembly includes a docking rod, and the bottom of the joint 2 is rotatably connected to the docking rod, the outer wall of the docking rod is sleeved with a gear rotatably connected to the bottom wall of the support plate, and the interior of the docking rod is provided with a gas channel 2 whose top is docked with the connecting head 2 and whose bottom is docked with the gas channel 1, and the bottom wall of the docking rod is engaged with the top wall of the pushing column.

[0017] In the above-mentioned hydraulic valve assembly casting and molding processing equipment, the auxiliary mechanism also includes a support frame fixedly connected to the rear side wall of the frame, and two staggered sliding frames are connected to the support frame for front and rear sliding. The upper end of the sliding frame is a U-shaped structure, and the rack and scraper are respectively fixedly connected to the ends of the two horizontal sections of the U-shaped structure of the sliding frame.

[0018] Compared with the existing technology, the advantages of the present invention are:

[0019] 1. Through the cooperation of the main mold mechanism, the pressing mold mechanism and the demoulding mechanism, mechanical ejection and air injection are used for rapid demoulding to reduce adhesion, prevent breakage or damage during demoulding, and avoid incomplete demoulding; the demoulding 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, and 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 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 auxiliary core box surface, and facilitating the peeling of the sand core; the pushing column ejects the sand core.

[0020] 2. Through the cooperation of the die pressing mechanism, the demoulding mechanism and the auxiliary mechanism, the inner wall of the auxiliary core box cavity is cleaned by blowing air to prevent debris from adhering, and to avoid problems such as roughness, unevenness or air holes on the subsequent sand core surface; the bottom end of the pushing column moves downward until the inclined section of the gas channel 1 enters the cavity of the auxiliary core box, and the air is blown out into the cavity of the auxiliary core box through the guidance of the inclined section of the gas channel 1; through the cooperation of the rack and the gear, the range of cleaning the inner wall of the auxiliary core box cavity is expanded, thereby improving the cleaning efficiency.

[0021] 3. By setting up two sets of main mold mechanisms, pressure mold mechanisms and auxiliary mechanisms, the left and right sides perform alternating operations, avoiding long single operation cycle time and improving operation efficiency; when the sand discharge mechanism and the main mold mechanism and pressure mold mechanism on one side perform core shooting operations, the pressure mold mechanism, demoulding mechanism and auxiliary mechanisms on the other side perform demoulding and cleaning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 A schematic diagram of the overall structure.

[0024] Figure 2 for Figure 1 A structural diagram from another perspective.

[0025] Figure 3 It is a partial structural diagram of the sand discharge mechanism and the main mold mechanism.

[0026] Figure 4 Schematic diagram of the changes of the demoulding plate before and after demoulding.

[0027] Figure 5 Schematic diagram of the partial structure of the main mold mechanism and the pressure mold mechanism.

[0028] Figure 6 It is a structural diagram of the die pressing mechanism and the demoulding mechanism before docking.

[0029] Figure 7 It is a structural diagram of the die pressing mechanism and the demoulding mechanism after docking.

[0030] Figure 8 Schematic diagram of the changes before and after the docking of the docking rod and the pushing column.

[0031] Figure 9 This is a partial structural diagram of the auxiliary mechanism.

[0032] Figure 10 It is a partial structural diagram of the demoulding mechanism and auxiliary mechanism.

[0033] In the figure: 1, frame; 2, sanding mechanism; 21, slide rail; 22, sanding head; 23, hydraulic cylinder; 3, main mold mechanism; 31, main core box; 32, stripper plate; 33, positioning block; 34, pushing block; 4, die pressing mechanism; 41, moving assembly; 411, sliding seat; 412, hydraulic rod 1; 413, hydraulic rod 2; 42, stripping mating assembly; 421, auxiliary core box; 422, exhaust port; 423, pushing column; 42 4. Gas channel one; 425. Fixed bar; 426. Rotating ring; 5. Demolding mechanism; 51. Anti-blocking component; 511. Hydraulic rod three; 512. Support plate; 513. Connecting rod; 514. Connecting plate; 515. Ventilation duct; 52. Demolding drive assembly; 521. Docking rod; 522. Gear; 523. Gas channel two; 6. Auxiliary mechanism; 61. Support frame; 62. Sliding frame; 63. Rack; 64. Scraper. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Reference Figures 1 to 2 A hydraulic valve assembly casting molding processing equipment includes a frame 1, a sand discharge mechanism 2 is provided on the upper part of the frame 1, a main mold mechanism 3 is symmetrically provided on the left and right of the middle part of the frame 1, an auxiliary mechanism 6 is provided on the rear part of the frame 1, and a left-right symmetrically distributed pressing mold mechanism 4 is provided on the frame 1. The main mold mechanism 3 is located between the left-right symmetrical pressing mold mechanisms 4, and a demolding mechanism 5 is symmetrically distributed on the left and right with the sand discharge mechanism 2 as the center is provided on the frame 1.

[0036] The main mold mechanism 3 and the corresponding pressing mold mechanism 4 cooperate to form a mold cavity, and the coated sand is loaded into the core by the sand discharge mechanism 2. After the left mold cavity is loaded into the core by the sand discharge mechanism 2, the main mold mechanism 3 and the pressing mold mechanism 4 are in the process of solidifying the sand core. The sand discharge mechanism 2 is transferred to the right mold cavity for core loading, so as to facilitate alternating operations on the left and right sides to improve efficiency; when the sand core is solidified, it is demolded by the pressing mold mechanism 4 and the demolding mechanism 5. 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 it is an existing equipment and will not be described in detail here) is provided below the frame 1 to transport the demolded sand core. A waste sand collection trough (not shown in the figure) is provided below the frame 1 for unified collection of waste sand.

[0037] Reference Figure 3 The sand-discharging mechanism 2 includes a hydraulic cylinder 23. The hydraulic cylinder 23 is symmetrically installed on the top wall of the frame 1 through an inverted L-shaped plate. The frame 1 is provided with left and right sliding rails 21. The slide rails 21 are connected to the sand-discharging head 22 through an electric slider for left and right sliding. The sand-discharging head 22 is connected to the electric slider for up and down sliding through a spring 1 (not shown in the figure).

[0038] Reference Figures 3 and 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 fixedly connected to the main core box 31 through connecting columns (not shown in the figure). The side of the main core box 31 close to the rectangular fixed seat is connected to a stripper 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 stripper plate 32. A plurality of pushing blocks 34 are fixedly connected to the middle of the stripper plate 32.

[0039] Reference Figure 1 and Figure 5 The molding mechanism 4 includes a moving component 41 arranged on the frame 1 for alternating left and right movement operations and a demolding cooperation component 42 arranged on the moving component 41 for performing molding and demolding operations by cooperating with the main mold mechanism 3; the moving component 41 includes a sliding seat 411, and two support rods symmetrically connected to the frame 1 are fixedly connected in the front and back directions. The two support rods are slidably connected to the sliding seats 411 symmetrically distributed in the left and right directions. The sliding seat 411 is connected to the side close to the frame 1 through a hydraulic rod 1 412, and the side of the sliding seat 411 close to the corresponding main core box 31 is hinged with a hydraulic rod 2 413.

[0040] Reference Figures 5 to 8The demoulding matching 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. The front and rear side walls of the auxiliary core box 421 are provided with multiple exhaust ports 422; the side of the auxiliary core box 421 connected to the second hydraulic rod 413 is provided with multiple staggered circular holes, and a rotating ring 426 is rotatably connected in the circular hole. The middle part of the rotating ring 426 is up and down (at this time, the auxiliary core box 421 is in a Figure 7 The pushing column 423 is provided with a pushing column 423 that slides through the pushing column 423 (in the state shown in the figure), and the side walls of the pushing column 423 are symmetrically fixedly connected with fixing bars 425. A slot for the fixing bar 425 to slide up and down is provided on the rotating ring 426, and a spring three (not shown in the figure) is connected between the fixing bar 425 and the slot. A gas channel 1 424 is provided inside the pushing column 423, and the gas channel 1 424 consists of a vertical section and an upwardly inclined inclined section connected to the bottom end of the vertical section, and the inclined section runs through the outer wall of the pushing column 423.

[0041] Before core shooting, the output end of the hydraulic rod 2 413 contracts to drive the auxiliary core box 421 to rotate to a vertical state, and the output end of the hydraulic rod 1 412 extends to drive the sliding seat 411 to slide toward the main core box 31, and the sliding seat 411 drives the auxiliary core box 421 to move toward the main core box 31 until the auxiliary core box 421 and the main core box 31 are closed to form a mold cavity, and a core shooting opening is provided on the top wall of the closed position of the auxiliary core box 421 and the main core box 31; when the auxiliary core box 421 gradually comes close to the main core box 31, it pushes the positioning block 33 to drive the stripping plate 32 away from the corresponding main core box 31, and the spring 2 is stretched.

[0042] During core shooting, the upper end of the sand head 22 is connected to the sand hopper (not shown in the figure) through a pipe. The sand hopper provides a sand source for the sand head 22 to ensure sufficient sand supply. Before core shooting, the electric slider drives the sand head 22 to slide on the slide rail 21 to the corresponding loading position on the left or right side. The bottom wall of the output end of the hydraulic cylinder 23 moves downward to push the sand head 22 to slide downward on the electric slider until the bottom wall of the sand head 22 is aligned with the corresponding core shooting port. Compressed air shoots the coated sand from the sand head 22 at high speed into the mold cavity formed by the auxiliary core box 421 and the main core box 31. The sand particles are compacted and fill the mold cavity under pressure. The exhaust port 422 is used to discharge excess air in the mold cavity during core shooting.

[0043] After the core is shot, the auxiliary core box 421 and the main core box 31 are electrically heated, and the resin in the coated sand melts and solidifies to form a high-strength sand core. When demoulding, the extended end of the hydraulic rod 1 412 contracts and drives the sliding seat 411 to reset. When the auxiliary core box 421 moves away from the main core box 31, it gradually releases the push on the positioning block 33. The spring 2 drives the stripping plate 32 to slide along the connecting column toward the corresponding main core box 31. The stripping plate 32 drives the pushing block 34 to be ejected, pushing the sand core to quickly separate from the main core box 31 (such as Figure 4 shown).

[0044] Reference Figure 1 and Figure 6 The demoulding mechanism 5 includes an anti-blocking component 51 arranged on the frame 1 for preventing exhaust blockage and a demoulding drive component 52 arranged on the anti-blocking component 51 for quickly demoulding and cleaning the mold by cooperating with the demoulding matching component 42.

[0045] Reference Figure 1 、 Figure 6 、 Figure 7 and Figure 8 The anti-blocking component 51 includes a hydraulic rod three 511, and the bottom walls of the horizontal sections of the two inverted L-shaped plates are symmetrically installed with hydraulic rods three 511 in the front and rear directions. The bottom walls of the output ends of the front and rear corresponding hydraulic rods three 511 are commonly fixedly connected to a support plate 512, and the support plate 512 is symmetrically provided with connecting rods 513 distributed left and right in the front and rear directions. The connecting rods 513 are slidably connected to the support plate 512 up and down; the bottom walls of the two corresponding connecting rods 513 on the left and right are commonly fixed with a connecting plate 514 that is engaged with the auxiliary core box 421, and a spring four is connected between the connecting plate 514 and the bottom wall of the support plate 512, and a connector one corresponding to the exhaust port 422 is provided on the side close to each other of the front and rear corresponding connecting plates 514, and a connector two corresponding to the circular hole on the auxiliary core box 421 is provided on the support plate 512. The connector one and the connector two are connected to an external air pump (not shown in the figure) through a ventilation pipe 515.

[0046] Reference Figure 6 、 Figure 7 、 Figure 8 and Figure 10 The demolding drive assembly 52 includes a docking rod 521, the bottom of the joint 2 is rotatably connected to the docking rod 521, the outer wall of the docking rod 521 is sleeved with a gear 522 rotatably connected to the bottom wall of the support plate 512, and the interior of the docking rod 521 is provided with a gas channel 2 523 whose top is docked with the connector 2 and whose bottom is docked with the gas channel 1 424, and the bottom wall of the docking rod 521 is engaged with the top wall of the pushing column 423.

[0047] Reference Figure 2 、 Figure 9 and Figure 10 The auxiliary mechanism 6 includes a rack 63 corresponding to the demoulding drive assembly 52 and a scraper 64 corresponding to the main mold mechanism 3. The rack 63 is used to drive the demoulding drive assembly 52 and the demoulding matching assembly 42 to rotate to expand the cleaning range, and the scraper 64 is used to scrape off 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, and two staggered sliding frames 62 are connected to the support frame 61 for sliding back and forth. The upper end of the sliding frame 62 is a U-shaped structure, and 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.

[0048] Reference Figures 6 to 8 The output end of the second hydraulic rod 413 extends to drive the auxiliary core box 421 to rotate on the sliding seat 411. The auxiliary core box 421 changes from a vertical state to a horizontal state, and the sand core rotates to face downward. 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 a downward opening, and the exhaust port 422 is in a semicircular shape with an upward opening. The connector 1 is docked and engaged with the exhaust port 422. Connector 2 is connected to the pushing column 423 through the docking rod 521. Rubber gaskets can be installed to ensure the sealing of the connection between connector 1 and the exhaust port 422, connector 2 and the docking rod 521, and the docking rod 521 and the pushing column 423. The air pump injects air into the auxiliary core box 421 through the ventilation pipe 515 and connector 1 to prevent the exhaust port 422 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 421, reducing the adhesion between the sand core and the surface of the auxiliary core box 421, making it easier to peel off the sand core.

[0049] The hydraulic rod 3 511 continues to push down, 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, and the bottom end of the pushing column 423 pushes the sand core to push the sand core out, which is convenient for the rapid separation of the sand core and 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 it from breaking or damaging during demolding, and to 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 adhering to it and avoid problems such as roughness, unevenness or the presence of pores on the subsequent sand core surface (such as Figure 8 shown).

[0050] The rack 63 corresponding to and adapted to the gear 522 is fixedly connected to the sliding frame 62. The sliding frame 62 slides forward on the support frame 61, driving the rack 63 to move toward the corresponding gear 522 (as shown in FIG. Figure 10As shown in FIG, the rack 63 moves to drive the gear 522 and the docking rod 521 to rotate, and the rotation of the docking rod 521 drives the pushing column 423 to rotate, so that the position of the gas channel 1 424 changes, and the position of the air blown out from the gas channel 1 424 changes, so that the range of cleaning the inner wall of the cavity of the auxiliary core box 421 becomes larger, and the cleaning efficiency is improved; at the same time, the sliding frame 62 slides forward on the supporting frame 61, driving the scraper 64 to scrape the waste sand at the core shooting port position of the main core box 31 and the auxiliary core box 421 corresponding to the alternating working area, and timely cleans the top surface after sand shooting to prevent waste sand from sticking (as shown in FIG. Figure 1 shown).

[0051] The specific operating steps of this hydraulic valve assembly casting and molding processing equipment are as follows:

[0052] The auxiliary core box 421 rotates to a vertical state and slides toward the main core box 31. The two are tightly attached to form a mold cavity. The sand discharge head 22 moves to align with the core shooting port. Compressed air shoots the coated sand from the sand discharge head 22 at high speed into the mold cavity formed by the auxiliary core box 421 and the main core box 31. After core shooting, the auxiliary core box 421 and the main core box 31 are electrically heated, and the resin in the coated sand melts and solidifies to form a high-strength sand core.

[0053] During demoulding, the auxiliary core box 421 moves horizontally to reset, and the demoulding plate 32 drives the pushing block 34 to push out, pushing the sand core to quickly separate from the main core box 31. The auxiliary core box 421 changes from a vertical state to a horizontal state, and the sand core rotates to face downward. The anti-blocking component 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 to reduce surface adhesion. The bottom end of the pushing column 423 pushes the sand core to push it out. The air is guided by the inclined section of the gas channel 424, and the blown air cleans the inner wall of the cavity of the auxiliary core box 421 to prevent debris from adhering.

[0054] The auxiliary mechanism 6 assists the gas channel 1 424 to blow air toward the inner wall of the cavity of the auxiliary core box 421, thereby expanding the cleaning range. The scraper 64 scrapes away the waste sand at the core shooting opening positions of the main core box 31 and the auxiliary core box 421 corresponding to the alternating working area.

[0055] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hydraulic valve assembly casting and molding processing equipment, comprising a frame, characterized in that: The upper part of the frame is provided with a sand discharge mechanism, and the middle part of the frame is symmetrically provided with a main mold mechanism, the rear part of the frame is provided with an auxiliary mechanism, the frame is provided with symmetrically distributed pressing mold mechanisms, the main mold mechanism is located between the left and right symmetrical pressing mold mechanisms, and the frame is provided with a left and right symmetrically distributed demoulding mechanism with the sand discharge mechanism as the center; The die pressing mechanism includes a moving assembly arranged on the frame for left-right alternating movement and a demoulding matching assembly arranged on the moving assembly for performing die pressing and demoulding operations by cooperating with the main die mechanism; The demoulding mechanism includes an anti-blocking component provided on the frame for preventing exhaust blockage and a demoulding drive component provided on the anti-blocking component for quickly demoulding and cleaning the mold by cooperating with the demoulding matching component; The auxiliary mechanism includes a rack corresponding to the demoulding drive assembly and a scraper corresponding to the main mold mechanism. The rack is used to drive the demoulding drive assembly and the demoulding matching assembly to rotate to expand the cleaning range, and the scraper is used to scrape off excess waste sand during core shooting. The sand discharge mechanism includes a hydraulic cylinder symmetrically mounted on the top wall of the frame through an inverted L-shaped plate; The main mold mechanism includes a main core box. A rectangular fixed seat is fixed in the middle of the frame. The side walls of the rectangular fixed seat are symmetrically fixed with the main core box through connecting columns. The moving assembly includes a sliding seat. Two support rods facing left and right are fixed on the frame in a symmetrical manner. The two support rods are slidably connected to the sliding seats distributed symmetrically on the left and right. The sliding seat is connected to the side close to the frame through hydraulic rod 1, and the side of the sliding seat close to the corresponding main core box is hinged to hydraulic rod 2. The demoulding assembly includes an auxiliary core box rotatably connected to a side of a 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; A plurality of staggered circular holes are provided on one side of the auxiliary core box connected to the hydraulic rod 2, and a rotating ring is rotatably connected in the circular hole. A pushing column is passed through the middle of the rotating ring so as to slide up and down. A fixing bar is fixed symmetrically on the side wall of the pushing column. A slot for the fixing bar to slide up and down is provided on the rotating ring, and a spring 3 is connected between the fixing bar and the slot. The anti-blocking assembly includes three hydraulic rods symmetrically mounted on the bottom walls of the horizontal sections of the two inverted L-shaped plates, and a support plate is fixed to the bottom walls of the output ends of the corresponding hydraulic rods. Connecting rods are symmetrically arranged on the support plates, and the connecting rods are connected to the support plates in an upward and downward sliding manner. The bottom walls of the two corresponding connecting rods on the left and right are commonly fixed with a connecting plate that is engaged with the auxiliary core box. A spring four is connected between the connecting plate and the bottom wall of the support plate and is sleeved on the outside of the connecting rod. The support plate is provided with a connecting head two corresponding to the circular hole on the auxiliary core box. The demoulding drive assembly includes a docking rod rotatably connected to the bottom of the second connector.

2. A hydraulic valve assembly casting and molding processing equipment according to claim 1, characterized in that: The frame is provided with left and right oriented slide rails, and the slide rails are connected with a sand producing head through an electric slider for left and right sliding. The sand producing head is connected with the electric slider for up and down sliding through a spring.

3. A hydraulic valve assembly casting and molding processing equipment according to claim 1, characterized in that: The main core box is connected to a stripping plate sliding on the connecting column on one side close to the rectangular fixed seat through spring 2. The stripping plate is fixed with multiple positioning blocks distributed in a matrix shape, and multiple pushing blocks are fixed in the middle of the stripping plate.

4. A hydraulic valve assembly casting and molding processing equipment according to claim 1, characterized in that: A gas channel 1 is opened inside the pushing column, and the gas channel 1 consists of a vertical section and an upward inclined section connected to the bottom end of the vertical section. The inclined section runs through the outer wall of the pushing column, and the pushing column corresponds to the demoulding drive assembly.

5. A hydraulic valve assembly casting and molding processing equipment according to claim 1, characterized in that: A connector 1 corresponding to the exhaust port is provided on one side of the front and rear corresponding connecting plates close to each other, and the connector 1 and the connector 2 are connected to the external air pump through the ventilation pipe.

6. A hydraulic valve assembly casting and molding processing equipment according to claim 5, characterized in that: The outer wall of the docking rod is sleeved with a gear that is rotatably connected to the bottom wall of the support plate. The interior of the docking rod is provided with a gas channel 2 whose top is docked with the second connector and whose bottom is docked with the first gas channel. The bottom wall of the docking rod is engaged with the top wall of the pushing column.

7. A hydraulic valve assembly casting and molding processing equipment according to claim 1, characterized in that: The auxiliary mechanism also includes a support frame fixedly connected to the rear side wall of the frame, and two staggered sliding frames are connected to the support frame for front and rear sliding. The upper end of the sliding frame is a U-shaped structure, and the rack and 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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