A casting drilling device for pressure regulating valve production

Abstract

The present invention relates to the field of casting drilling devices, and in particular to a casting drilling device for the production of pressure regulating valves. It includes an operating box, a positioning piece, a mobile lifting frame, and a drilling assembly. The upper end of the operating box is open, and a plurality of drilling operation rooms are separated by a partition frame and a supporting base plate located on both sides of the partition frame; the positioning piece is located in the drilling operation room, and a batch of valve body castings of pressure regulating valves are positioned from both sides, and are fixed in rows on the supporting base plate; the mobile lifting frame moves and rises along the partition frame, passing through the valve body casting of each pressure regulating valve in turn; the drilling assembly is located on the mobile lifting frame and corresponds to a plurality of drilling operation rooms one by one, and drilling is performed synchronously. As the mobile lifting frame moves and rises. The casting drilling process of the present invention is automatic, batch, precise, and environmentally friendly, which ensures the processing efficiency and effect of the pressure regulating valve, and is conducive to the discovery of industries related to pressure regulating valves.

Description

Technical Field

[0001] The invention relates to the field of casting drilling devices, in particular to a casting drilling device for producing a pressure regulating valve. Background Art

[0002] The automotive pressure regulating valve consists of a valve body, a valve disc, a spring, a regulating mechanism and a sensor, and is widely used in various automotive systems, such as the fuel system, the brake system, the air conditioning system, etc. In these systems, the automotive pressure regulating valve can ensure that the pressure of the medium (such as fuel, brake fluid, refrigerant, etc.) is kept within the appropriate range, thereby ensuring the normal operation and performance of the vehicle. When producing the pressure regulating valve, it is necessary to drill holes in the casting, and the location of the drilling mainly depends on its design, functional requirements and manufacturing process.

[0003] The holes drilled inside the valve body mainly refer to pressure regulating holes and air leakage holes. The pressure regulating hole is a very critical hole in the pressure regulating valve, which is used to adjust the flow and pressure of the medium. It is usually located inside the valve body and works with the valve disc (or valve core) to achieve pressure regulation by changing the flow area. The air leakage hole (also called the exhaust hole or release hole) is usually located below or near the pressure regulating hole of the pressure regulating valve body. These small holes are drilled on the valve body during the processing of the pressure regulating valve body and are used to release overpressure gas to achieve the purpose of regulating gas pressure. The air leakage holes are usually very small, generally only a few millimeters in diameter, but the number may be large.

[0004] A Chinese patent with authorization announcement number CN213410439U provides a casting drilling device for pressure regulating valve production, including a box body, a table top is fixedly installed on the top of the box body, a cavity is opened inside the table top, a driving device is arranged inside the cavity, the driving device includes a motor, one end of the motor output shaft is fixedly connected to a first threaded rod through a coupling, both sides of the surface of the first threaded rod are threadedly connected to first threaded blocks, the tops of the two first threaded blocks are fixedly connected to sliders through connecting blocks, the tops of the sliders are fixedly connected to fixed seats, the two fixed seats are respectively provided with drilling devices and rotating components, and the top of the table top is provided with a protective device.

[0005] The existing casting drilling device for pressure regulating valve production has the following deficiencies: 1. Low processing efficiency. The castings need to be fixed one by one before drilling, and the castings need to be removed one by one after drilling, which takes a long time before and after drilling. 2. Inability to drill holes in a targeted manner. Since the pressure regulating holes and the air leakage holes are in different positions and sizes, especially the air leakage holes are very small, generally only a few millimeters in diameter, but there are many of them, so the drilling requirements are different. The existing casting drilling device for pressure regulating valve production cannot guarantee the accuracy of opening different holes. During the operation, it is necessary to replace the drills of different sizes and repeatedly adjust the drilling positions. Summary of the invention

[0006] In view of the problems existing in the background technology, a casting drilling device for the production of pressure regulating valves is proposed. The casting drilling process is automatic, batch, precise and environmentally friendly, which ensures the processing efficiency and effect of the pressure regulating valve and is conducive to the discovery of pressure regulating valve related industries.

[0007] The present invention provides a casting drilling device for pressure regulating valve production, comprising an operating box, a positioning member, a mobile lifting frame and a drilling assembly. The upper end of the operating box is open, and a plurality of drilling operation rooms are separated by a partition frame and a supporting bottom plate located on both sides of the partition frame; the positioning member is located in the drilling operation room, and a batch of valve body castings of pressure regulating valves are positioned from both sides so that they are fixed in a row on the supporting bottom plate; the mobile lifting frame moves and rises along the partition frame, and passes through the valve body casting of each pressure regulating valve in turn; the drilling assembly is located on the mobile lifting frame and corresponds to the plurality of drilling operation rooms one by one, and performs drilling synchronously. As the mobile lifting frame moves and rises, drilling component 1 opens a pressure regulating hole on the valve body casting of each pressure regulating valve; drilling component 2 is located on both sides of drilling component 1, and by rotating and moving along the side wall of the pressure regulating hole, on the one hand, the pressure regulating hole is expanded, and on the other hand, drilling component 3 is driven to rotate and drill synchronously; drilling component 3 takes the pressure regulating hole as the center and support, adjusts the radius through the adjusting component, rotates with drilling component 2, and synchronously opens a leakage hole on the valve body casting of the pressure regulating valve.

[0008] Preferably, the positioning members are arranged in pairs on both sides of the drilling operation chamber, including positioning plates that move relative to or away from each other.

[0009] Preferably, the mobile lifting frame includes a frame body spanning multiple drilling operation rooms; the frame body is provided with installation grooves corresponding to the drilling operation rooms one by one for movable installation of the drilling assembly; the telescopic rod is located at the bottom of the frame body and is slidably connected to the partition frame.

[0010] Preferably, the drilling assembly includes a mounting seat slidably arranged in a mounting groove; a rotatable turntable is arranged at the bottom of the mounting seat, and a mounting frame is arranged outside; drilling member 1 is installed on the mounting frame, and the drilling end passes through the center holes of the mounting seat and the turntable; two groups of movable frames slide relative to or back to each other at the bottom of the turntable, and are respectively arranged on both sides of the center hole; drilling member 2 is installed on the movable frame; drilling member 3 is movably installed on the movable frame through an adjusting member.

[0011] Preferably, the two groups of movable frames are L-shaped structures with bending heads facing each other, and the top of the vertical section is slidably connected to the turntable; the second drilling member is arranged on the bending head of the movable frame; the adjusting member is slidably arranged on the vertical section of the movable frame; and the third drilling member is lifted, moved and rotated by the adjusting member.

[0012] Preferably, the adjusting member includes a lifting frame that is lifted and lowered along the vertical section of the movable frame; one end of the adjusting frame is rotatably set on the lifting frame; an adjusting slot is set on the lifting frame; a sliding sleeve is slidably set in the adjusting slot, and the upper and lower ends extend out and are respectively provided with limit seats; a drilling member is set on the limit seat at the upper end, and the drilling end passes through the sliding sleeve and the limit seat at the lower end.

[0013] Preferably, an air supply member is arranged on the mounting seat; the air supply member includes an air guide hood located at the bottom of the mounting seat and arranged around the outer periphery of the turntable; the air guide hood is a trumpet-shaped structure with a small opening at the top and a large opening at the bottom, and an opening is opened at the center of the upper end for the turntable to rotate through; an annular air duct is arranged around the opening and is connected to an external fan; an air outlet is arranged along the outer periphery of the air duct, and discharges air in the diffusion direction of the air guide hood.

[0014] Preferably, a dust suction hole is arranged on the supporting bottom plate, and a dust suction member is arranged in the dust suction cavity below; the dust suction member comprises a dust suction pipe located below the supporting bottom plate and a dust suction pump connected to the dust suction pipe.

[0015] Preferably, a dust filter cartridge is sleeved on the outside of the dust suction tube; the dust suction pump is installed on the mounting handle; the dust filter cartridge and the mounting handle are detachably connected; a plug-in hole for fixing the mounting handle and for the vacuum tube to enter and exit is provided on the operating box; and a mounting ring is provided in the dust suction chamber, opposite to the plug-in hole, for fixing the end of the dust filter cartridge.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: multiple drilling operation rooms are set, and the lifting frame is moved to cooperate with the drilling assembly, so that the drilling assembly moves back and forth above each drilling operation room to drill holes in batches of castings in turn. Drilling piece 1, drilling piece 2 and drilling piece 3 are set to cooperate in drilling. Drilling piece 1 opens a pressure regulating hole on the valve body casting of each pressure regulating valve. Drilling piece 2 rotates and moves along the side wall of the pressure regulating hole, on the one hand, to expand the pressure regulating hole, and on the other hand, to drive drilling piece 3 to rotate synchronously for drilling. Drilling piece 3 takes the pressure regulating hole as the center of the circle and the support, adjusts the radius through the adjusting piece, rotates with drilling piece 2, and synchronously opens a leakage hole on the valve body casting of the pressure regulating valve. During the drilling process, the air outlet supplies air to the casting being drilled below, and the dust suction pipe sucks the dust blown by the air supply piece into the dust suction chamber, removing dust and cooling while drilling. The entire pressure regulating valve production casting drilling process is automatic, batch, precise and environmentally friendly, which ensures the processing efficiency and effect of the pressure regulating valve and is conducive to the discovery of pressure regulating valve related industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a casting drilling device for producing a pressure regulating valve in the present invention (viewing angle 1);

[0018] Figure 2 A schematic diagram of the structure of a casting drilling device for producing a pressure regulating valve in the present invention (viewing angle 2);

[0019] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0020] Figure 4 It is a structural schematic diagram of the positioning member in the present invention;

[0021] Figure 5 A schematic diagram of the positional relationship between the mobile lifting frame and the drilling assembly in the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the drilling assembly in the present invention;

[0023] Figure 7 is a cross-sectional view of the drilling assembly of the present invention;

[0024] Figure 8 Schematic diagram of the positional relationship between the second drilling member and the third drilling member in the present invention;

[0025] Fig. 9 It is a schematic diagram of the structure of the adjusting member and the drilling member 3 in the present invention;

[0026] Fig.10 It is a structural schematic diagram of the air supply member in the present invention;

[0027] Fig.11 It is a schematic structural diagram of the dust collecting component in the present invention.

[0028] Figure numerals: 1, operating box; 2, partition frame; 3, supporting bottom plate; 4, positioning member; 401, cylinder one; 402, positioning plate; 5, mobile lifting frame; 501, frame; 502, lead screw two; 503, telescopic rod; 504, slider one; 6, drilling assembly; 601, mounting seat; 602, turntable; 603, cylinder two; 604, mounting frame; 605, lead screw four; 606, mobile frame; 607, cylinder three; 608, reamer; 609, adjusting member; 60901, slider four; 60902, lifting frame; 60903, motor four; 60904, adjusting frame; 60905, adjusting slot; 60906, Rack segment; 60907, limit seat; 60908, sliding sleeve; 60909, gear three; 610, cylinder four; 611, drill two; 612, air supply part; 61201, air duct; 61202, air outlet; 61203, air guide cover; 61204, opening; 613, rotating sleeve; 614, gear one; 615, gear two; 616, slider three; 617, drilling part one; 618, drilling part two; 619, drilling part three; 620, slider two; 621, drill one; 7, dust suction part; 701, dust filter cartridge; 702, mounting ring; 703, dust suction pipe; 704, mounting handle; 705, dust suction pump. DETAILED DESCRIPTION

[0029] Embodiment 1, as Figure 1-Figure 3 As shown, the present invention proposes a casting drilling device for pressure regulating valve production, comprising an operation box 1, a positioning member 4, a mobile lifting frame 5 and a drilling assembly 6. The upper end of the operation box 1 is open, and a plurality of drilling operation rooms are separated by a partition frame 2 and a supporting bottom plate 3 located on both sides of the partition frame 2; the positioning member 4 is located in the drilling operation room, and a batch of valve body castings of pressure regulating valves are positioned from both sides, so that they are fixed in a row on the supporting bottom plate 3; the mobile lifting frame 5 moves and rises along the partition frame 2, and passes through the valve body casting of each pressure regulating valve in turn; the drilling assembly 6 is located on the mobile lifting frame 5 and corresponds to the plurality of drilling operation rooms one by one, and performs drilling synchronously. As the movable lifting frame 5 moves and rises, the drilling component 1 617 opens a pressure regulating hole on the valve body casting of each pressure regulating valve; the drilling component 2 618 is located on both sides of the drilling component 1 617, and by rotating and moving along the side wall of the pressure regulating hole, on the one hand, the pressure regulating hole is expanded, and on the other hand, the drilling component 3 619 is driven to rotate and drill synchronously; the drilling component 3 619 takes the pressure regulating hole as the center and support, adjusts the radius through the adjusting component 609, rotates with the drilling component 2 618, and synchronously opens a leakage hole on the valve body casting of the pressure regulating valve.

[0030] like Figure 4 As shown, the positioning members 4 are arranged in pairs on both sides of the drilling operation chamber, including positioning plates 402 that are driven by a cylinder 401 and move relative to or away from each other.

[0031] It should be further explained that the positioning plate 402 is in the shape of a strip, and is clamped and fixed on both sides of the casting to ensure that a batch of castings of the same type are lined up with the surfaces to be drilled facing upright.

[0032] like Figure 5 As shown, the mobile lifting frame 5 includes a frame body 501 spanning multiple drilling operation rooms; the frame body 501 is provided with installation grooves corresponding to the drilling operation rooms one by one to facilitate the movable installation of the drilling assembly 6; the telescopic rod 503 is located at the bottom of the frame body 501 and is slidably connected to the partition frame 2.

[0033] It should be further explained that the frame 501 is an inverted U-shaped structure, and both sides are slidably connected to the outer wall of the operation box 1.

[0034] It should be further explained that the telescopic rod 503 is configured as an electrically controlled multi-section telescopic structure, which drives the drilling assembly 6 to move up and down through telescoping.

[0035] It needs to be further explained that a slide groove is provided on the partition frame 2; a lead screw 1 driven to rotate by a motor 1 is provided in the slide groove; a slider 504 located at the bottom of the telescopic rod 503 extends into the slide groove, and is threadedly connected with the lead screw 1, thereby driving the frame body 501 to move back and forth along the partition frame 2 to drill holes in the casting in turn.

[0036] like Figure 6-Figure 8 As shown, the drilling assembly 6 includes a mounting seat 601 slidably arranged in a mounting groove; a rotatable turntable 602 is arranged at the bottom of the mounting seat 601, and a mounting frame 604 is arranged on the outside; a drilling member 617 is installed on the mounting frame 604, and the drilling end passes through the center holes of the mounting seat 601 and the turntable 602; two groups of movable frames 606 slide relative to or back to each other at the bottom of the turntable 602, and are respectively arranged on both sides of the center hole; a drilling member 2 618 is installed on the movable frame 606; and a drilling member 3 619 is movably installed on the movable frame 606 through an adjusting member 609.

[0037] It should be further explained that the drilling component 617 includes a cylinder 603 located on the mounting frame 604 and a drill 621 that penetrates the center hole, which is used to open a pressure regulating hole. Of course, it can also be used to open other holes required for casting processing, such as valve body mounting holes, etc.

[0038] It needs to be further explained that a lead screw 502 driven to rotate by a second motor is arranged in the installation slot; a second slider 620 is arranged on the outer side of the mounting seat 601; the second slider 620 is threadedly connected with the lead screw 502 to drive the mounting seat 601 to move horizontally along the installation slot.

[0039] It should be further explained that the moving direction of the mounting base 601 and the moving direction of the frame 501 are perpendicular to each other.

[0040] It needs to be further explained that the turntable 602 rotates through the mounting base 601 through the rotating sleeve 613; the gear 1 614 is located at the top of the rotating sleeve 613; the gear 1 614 and the rotating sleeve 613 are coaxially connected to the center hole for the drill 1 621 to pass through; the gear 2 615 driven by the motor 3 is rotatably set on the mounting frame 604 and meshes with the gear 1 614.

[0041] The mounting seat 601 moves forward and backward and up and down with the frame 501, and moves left and right along the mounting slot to further adjust the position of the drilling hole (pressure regulating hole). The turntable 602 rotates through the drive of the motor 3, the gear 1 614 and the gear 2 615 to meet the needs of expanding the hole (pressure regulating hole) and drilling the hole (leakage hole).

[0042] like Figure 6-Figure 8 As shown, the two groups of movable frames 606 are L-shaped structures with bending heads facing each other, and the top of the vertical section is slidably connected to the turntable 602; the drilling member 2 618 is set on the bending head of the movable frame 606; the adjusting member 609 is slidably set on the vertical section of the movable frame 606; the drilling member 3 619 is lifted, moved and rotated through the adjusting member 609.

[0043] It needs to be further explained that a guide groove is arranged on the turntable 602; a motor four and a screw three driven by the motor four are arranged in the guide groove; a slider three 616 is arranged at the top of the movable frame 606; the slider three 616 extends into the guide groove, and is threadedly connected with the screw three to drive the two groups of movable frames 606 to move relative to or away from each other, and cooperate with the rotation of the turntable 602 to expand and trim the initially formed pressure regulating hole.

[0044] It should be further explained that the drilling member 2 618 includes a cylinder 3 607 mounted on the bending head of the mobile frame 606 and a reamer 608 driven to rise and fall by the cylinder 3 607. The drilling member 1 621 rises after the work is completed, and the reamer 608 adjusts the spacing to match the peripheral wall of the pressure regulating hole as the two sets of mobile frames 606 move relative to or away from each other. The reamer 608 extends into the pressure regulating hole and further expands and trims it by rotating.

[0045] like Fig. 9 As shown, the adjusting member 609 includes a lifting frame 60902 that is lifted and lowered along the vertical section of the moving frame 606; one end of the adjusting frame 60904 is driven by a motor four 60903 and is rotatably arranged on the lifting frame 60902; an adjusting slot 60905 is arranged on the lifting frame 60902; a sliding sleeve 60908 is slidably arranged in the adjusting slot 60905, and the upper and lower ends extend out and are respectively provided with limit seats 60907; a drilling member three 619 is arranged on the limit seat 60907 at the upper end, and the drilling end passes through the sliding sleeve 60908 and the limit seat 60907 at the lower end.

[0046] It should be further explained that a lifting slot is set on the vertical section of the movable frame 606, and a motor five and a screw four 605 driven to rotate by the motor five are also set; the slider four 60901 passes through the lifting slot and is threadedly connected to the screw four 605, and at the same time drives the lifting frame 60902 on the back side of the movable frame 606 to move up and down.

[0047] It should be further explained that both the adjustment frame 60904 and the adjustment slot 60905 are arc-shaped structures, and the arc surfaces are parallel; rack segments 60906 that fit the arc surfaces are respectively arranged on the concave and convex surfaces of the adjustment frame 60904; a gear three 60909 that is driven to rotate by a motor five is arranged between the limit seats 60907 at the upper and lower ends; the gear three 60909 is located on the outer side of the adjustment frame 60904, and is respectively meshed and connected with the rack segments 60906 on the corresponding sides.

[0048] It should be further explained that the drilling component three 619 includes a cylinder four 610 installed on the upper limit seat 60907 and a drill two 611 that passes through the sliding sleeve 60908 and the lower limit seat 60907.

[0049] The turntable 602 rotates, driving the moving frame 606 to rotate, and the adjusting member 609 rotates synchronously. When opening the air leakage hole, the adjusting frame 60904 rotates, rises and falls, and adjusts the position of the drilling member 3 619. The gear 3 60909 rotates along the rack segment 60906, driving the drilling member 3 619 to move in an arc trajectory, further changing the position of the drilling member 3 619. In the process of opening the air leakage hole, the pressure regulating hole is used as the center and support, and the radius is dynamically adjusted, so that the hole opening is stable, accurate and flexible.

[0050] like Figure 6 and Fig.10 As shown, an air supply member 612 is arranged on the mounting base 601; the air supply member 612 includes an air guide cover 61203 located at the bottom of the mounting base 601 and arranged around the outer periphery of the turntable 602; the air guide cover 61203 is a trumpet-shaped structure with a small opening at the top and a large opening at the bottom, and an opening 61204 is provided at the center of the upper end for the turntable 602 to rotate through; an annular air duct 61201 is arranged around the opening 61204 and is connected to an external fan; an air outlet 61202 is arranged along the outer periphery of the air duct 61201, and discharges air in the diffusion direction of the air guide cover 61203.

[0051] Air is supplied by the fan, and the air outlet 61202 discharges air along the diffusion direction of the air guide cover 61203 to supply air to the casting being drilled below. On the one hand, it cools the casting, reduces deformation of the drilling position, and improves the drilling effect. On the other hand, it avoids dust and reduces environmental pollution.

[0052] like Figure 1 and Fig.11 As shown, a dust suction hole is arranged on the support base plate 3 , and a dust suction member 7 is arranged in the dust suction cavity below; the dust suction member 7 includes a dust suction pipe 703 located below the support base plate 3 and a dust suction pump 705 connected to the dust suction pipe 703 .

[0053] Through the cooperation of the dust suction pipe 703 and the dust suction pump 705, negative pressure is formed under the supporting bottom plate 3, and the dust blown by the air supply member 612 is sucked into the dust suction chamber to reduce environmental pollution and accelerate the cooling and shaping of the casting.

[0054] It needs to be further explained that the dust suction tube 703 is covered with a dust filter cartridge 701 on the outside; the dust suction pump 705 is installed on the installation handle 704; the dust filter cartridge 701 and the installation handle 704 are detachably connected; a plug-in hole is provided on the operating box 1 for fixing the installation handle 704 and for the dust suction tube 703 to enter and exit; a mounting ring 702 is provided in the dust suction chamber, which is opposite to the plug-in hole and fixes the end of the dust filter cartridge 701.

[0055] The device is routinely maintained and cleaned by pulling out the mounting handle 704 and the dust suction tube 703 and removing the dust filter cartridge 701 to ensure its dust removal and cooling performance.

[0056] Embodiment 2: Based on the casting drilling device for pressure regulating valve production in embodiment 1, this embodiment proposes a method for drilling a casting for pressure regulating valve production, and the steps are as follows:

[0057] S1. Move the two sets of positioning plates 402 in each drilling operation room to a distance slightly wider than the pressure regulating valve casting; place a batch of castings of the same type between the two sets of positioning plates 402 in sequence; the positioning plates 402 clamp and fix the castings from both sides to ensure that a batch of castings of the same type are lined up with the drilling surface facing upright;

[0058] S2, the frame 501 moves forward and backward along the partition frame 2, passing through each casting in turn;

[0059] S3, the mounting seat 601 moves forward and backward and up and down with the frame 501 on the one hand, and moves left and right along the mounting slot on the other hand to adjust the position of the drilling hole;

[0060] S4, a drill 621 of a drilling member 617 first opens a pressure regulating hole on a valve body casting of the pressure regulating valve;

[0061] S5, after the work is completed, the drill 621 rises, and the reamer 608 moves relative to or away from the two sets of moving frames 606, and the spacing is adjusted to match the peripheral wall of the pressure regulating hole; then the reamer 608 extends into the pressure regulating hole, and further expands and trims it by rotating;

[0062] S6, while expanding and trimming, due to the rotation of the turntable 602, the movable frame 606 is driven to rotate, and the adjusting member 609 rotates synchronously; the adjusting frame 60904 rotates and rises and falls to adjust the position of the drilling member 3 619; at the same time, the drilling member 3 619 moves in an arc trajectory to further change the position of the drilling member 3 619, and the drilling device 2 611 can use the pressure regulating hole as the center and support, dynamically adjust the radius, and synchronously open the leakage hole;

[0063] S7. After finishing one casting, the next group of castings can be drilled;

[0064] S8. The air outlet 61202 discharges air along the diffusion direction of the air guide cover 61203 to supply air to the casting being drilled below. The dust suction pipe 703 and the dust suction pump 705 cooperate to form a negative pressure under the supporting base plate 3, and the dust blown by the air supply part 612 is sucked into the dust suction chamber, and dust is removed and the temperature is reduced while drilling.

[0065] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A casting drilling device for pressure regulating valve production, characterized in that: include: An operation box (1) has an open top and is divided into a plurality of drilling operation rooms by cooperation of a partition frame (2) and supporting bottom plates (3) located on both sides of the partition frame (2); A positioning member (4) is located in the drilling operation room and is used to position a batch of valve body castings of pressure regulating valves from both sides so that they are fixed in a row on the supporting base plate (3); A movable lifting frame (5) is moved and lifted along the partition frame (2) and passes through the valve body casting of each pressure regulating valve in turn; and a drilling assembly (6), which is located on the mobile lifting frame (5) and corresponds to the plurality of drilling operation rooms one by one, and performs drilling synchronously; The mobile lifting frame (5) comprises a frame body (501) spanning across a plurality of drilling operation rooms; the frame body (501) is provided with mounting grooves corresponding to the drilling operation rooms one by one for movably mounting the drilling assembly (6); the telescopic rod (503) is located at the bottom of the frame body (501) and is slidably connected to the partition frame (2); The drilling assembly (6) comprises a mounting seat (601) slidably arranged in a mounting groove; a rotatable turntable (602) is arranged at the bottom of the mounting seat (601), and a mounting frame (604) is arranged outside; a drilling member (617) is mounted on the mounting frame (604), and a drilling end passes through the center holes of the mounting seat (601) and the turntable (602); two sets of movable frames (606) slide relative to or opposite to each other at the bottom of the turntable (602), and are respectively arranged on both sides of the center hole; a drilling member (618) is mounted on the movable frame (606); and a drilling member (619) is movably mounted on the movable frame (606) through an adjusting member (609); The two sets of movable frames (606) are L-shaped structures with bending heads facing each other, and the top of the vertical section is slidably connected to the turntable (602); the second drilling member (618) is arranged on the bending head of the movable frame (606); the adjusting member (609) is slidably arranged on the vertical section of the movable frame (606); the third drilling member (619) is lifted, moved and rotated by the adjusting member (609); The adjusting member (609) comprises a lifting frame (60902) that is lifted and lowered along the vertical section of the moving frame (606); one end of the adjusting frame (60904) is rotatably arranged on the lifting frame (60902); an adjusting slot (60905) is arranged on the lifting frame (60902); a sliding sleeve (60908) is slidably arranged in the adjusting slot (60905), and the upper and lower ends thereof extend out and are respectively provided with limit seats (60907); a third drilling member (619) is arranged on the limit seat (60907) at the upper end, and the drilling end penetrates the sliding sleeve (60908) and the limit seat (60907) at the lower end; As the movable lifting frame (5) moves and rises, the drilling member 1 (617) opens a pressure regulating hole on the valve body casting of each pressure regulating valve; the drilling member 2 (618) is located on both sides of the drilling member 1 (617), and by rotating and moving along the side wall of the pressure regulating hole, on the one hand, the pressure regulating hole is expanded, and on the other hand, the drilling member 3 (619) is driven to rotate and drill synchronously; the drilling member 3 (619) takes the pressure regulating hole as the center and support, adjusts the radius through the adjusting member (609), rotates with the drilling member 2 (618), and synchronously opens the leakage hole on the valve body casting of the pressure regulating valve.

2. The casting drilling device for pressure regulating valve production according to claim 1, characterized in that: The positioning members (4) are arranged in pairs on both sides of the drilling operation chamber, and include positioning plates (402) that move relative to or away from each other.

3. The casting drilling device for producing a pressure regulating valve according to claim 1, characterized in that: An air supply member (612) is disposed on the mounting seat (601); the air supply member (612) comprises an air guide cover (61203) located at the bottom of the mounting seat (601) and disposed around the outer periphery of the turntable (602); the air guide cover (61203) is a trumpet-shaped structure with a small opening at the top and a large opening at the bottom, and an opening (61204) is provided at the center of the upper end for the turntable (602) to rotate through; an annular air duct (61201) is disposed around the opening (61204) and is connected to an external fan; an air outlet (61202) is disposed along the outer periphery of the air duct (61201) and discharges air in a diffusion direction toward the air guide cover (61203).

4. The casting drilling device for producing a pressure regulating valve according to claim 1, characterized in that: A dust suction hole is provided on the supporting bottom plate (3), and a dust suction member (7) is provided in the dust suction cavity below; The dust suction member (7) comprises a dust suction pipe (703) located below the supporting base plate (3) and a dust suction pump (705) connected to the dust suction pipe (703).

5. The casting drilling device for producing a pressure regulating valve according to claim 4, characterized in that: The dust suction pipe (703) is covered with a dust filter cartridge (701) on the outside; the dust suction pump (705) is mounted on the mounting handle (704); the dust filter cartridge (701) and the mounting handle (704) are detachably connected; the operating box (1) is provided with a plug-in hole for fixing the mounting handle (704) and for the dust suction pipe (703) to enter and exit; and the dust suction chamber is provided with a mounting ring (702) opposite to the plug-in hole for fixing the end of the dust filter cartridge (701).

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