Valve shell casting equipment for instrument valve production

Abstract

The invention relates to the field of instrument valve casing casting machining, in particular to valve casing casting equipment for instrument valve production, which comprises an equipment body, an adjustable mechanism and a positioning mechanism, the adjustable mechanism comprises a cantilever, a flange plate, a locking nut, an adjusting nut and an elastic chuck, the cantilever is mounted on the equipment body, and the flange plate is mounted on the cantilever; the bottom end of the cantilever is connected with a locking nut through the flange plate, one side of the locking nut is in threaded connection with an adjusting nut, and elastic chucks are installed in the locking nut and the adjusting nut. Through a cooperative adjusting structure of the locking nut and the adjusting nut, angle adjustment of the grinding head is achieved, the design can meet the machining requirement of the inclined flange face of the valve shell, the grinding assembly does not need to be replaced, the remodeling time is shortened, the elastic chuck is matched with the conical extrusion effect of the adjusting nut, and rapid and stable fixing of the grinding head is achieved.

Description

Technical Field

[0001] This invention relates to the field of instrument valve body casting and processing, and more particularly to a valve body casting equipment for the production of instrument valves. Background Technology

[0002] After the valve body is cast, it needs to be ground to ensure subsequent assembly. Traditional grinding equipment often has grinding heads that are fixedly installed or require multiple sets of bolts to be disassembled and adjusted for angle. When machining the inclined surface of the valve body, the grinding components need to be changed frequently, which is cumbersome and time-consuming. On the other hand, the grinding head is usually fixed by bolt clamping or chuck clamping. It is difficult to control the clamping force during fixing, which can easily lead to deformation or slippage of the grinding head. When disassembling, the fixing parts need to be adjusted one by one, and each replacement is time-consuming. Therefore, there is a special need for a valve body casting equipment for the production of instrument valves. Summary of the Invention

[0003] The purpose of this invention is to provide a valve body casting equipment for the production of instrument valves, so as to solve the problem of the existing valve body casting equipment for the production of instrument valves mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a valve shell casting equipment for the production of instrument valves, comprising an equipment body, an adjustable mechanism, and a positioning mechanism, wherein the adjustable mechanism is disposed on one side of the upper part of the equipment body, and the positioning mechanism is disposed on the equipment body of the adjustable mechanism; The adjustable mechanism includes a cantilever, a flange, a locking nut, an adjusting nut, and a flexible clamp. The cantilever is mounted on the equipment body. The bottom end of the cantilever is connected to the locking nut through the flange. An adjusting nut is threaded onto one side of the locking nut. Flexible clamps are installed inside the locking nut and the adjusting nut.

[0005] Preferably, the adjustable mechanism further includes a mounting groove and a grinding head. The mounting groove is provided on the bottom side of the cantilever for flange installation. The grinding head is installed on the elastic clamp. The adjusting nut and the locking nut are sequentially sleeved on the outside of the mounting groove.

[0006] Preferably, the inner wall of the adjusting nut is provided with an internal thread, and the outer wall of the mounting groove is provided with an external thread. The adjusting nut and the mounting groove are adjusted in axial position through the thread structure. The end of the adjusting nut near the elastic clamp is provided with a tapered extrusion surface, which is used to extrude the elastic clamp to achieve radial contraction.

[0007] Preferably, the flange is rotatably connected to the lock nut.

[0008] Preferably, the positioning mechanism includes a positioning base, an electromagnetic coil, and a stainless steel plate. The positioning base is installed on the equipment body, and five sets of electromagnetic coils are embedded in the top of the positioning base. The stainless steel plate is laid on the top surface of the positioning base.

[0009] Preferably, the positioning mechanism further includes a power-off demagnetization module, used to input a demagnetizing current into the electromagnetic coil when the equipment is stopped, so that the electromagnetic coil is quickly demagnetized.

[0010] Preferably, the positioning mechanism further includes an auxiliary positioning bracket and a valve housing pressure plate, wherein the auxiliary positioning bracket is fixedly connected to a stainless steel plate, and the valve housing pressure plate is disposed above the auxiliary positioning bracket.

[0011] Preferably, the positioning mechanism further includes a clamping screw and a guide screw. The clamping screw is internally threaded to the auxiliary positioning bracket and rotatably connected to the top of the valve body pressure plate. Two guide screws are provided and symmetrically distributed on both sides of the clamping screw, and are slidably connected to the valve body pressure plate.

[0012] Preferably, the elastic chuck is made of spring steel and has twelve axial slots evenly distributed around its circumference, so that the elastic chuck forms a radially retractable gripper structure.

[0013] Preferably, the mounting end of the grinding head is inserted into the inner hole of the elastic chuck and secured by the radial contraction of the elastic chuck.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The grinding head angle can be adjusted by the coordinated adjustment structure of the locking nut and the adjusting nut. This design can be adapted to the processing requirements of the inclined flange surface of the valve body without replacing the grinding components, thus reducing changeover time. 2. The elastic chuck made of spring steel, combined with the conical extrusion action of the adjusting nut, achieves rapid and stable fixation of the grinding head. When the adjusting nut moves axially, it compresses the elastic chuck radially and clamps the grinding head mounting end with a uniform clamping force. When disassembling, simply rotate the locking nut in the opposite direction, and the elastic chuck will reset under its own elasticity, releasing the grinding head. This shortens the time for replacing the grinding head each time. 3. The positioning mechanism uses an electromagnetic coil to attract a stainless steel plate to form a reference surface. With the help of a power-off demagnetization module, the reference surface can be cleaned and the valve body can be picked up and put away quickly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial assembly schematic diagram of the adjustable mechanism of the present invention; Figure 3 This is an exploded structural diagram of the adjustable mechanism of the present invention; Figure 4 This is a schematic diagram of the combined structure of the elastic chuck and the grinding head of the present invention; Figure 5 This is a cross-sectional view of the mating structure of the adjusting nut and the elastic collet of the present invention; Figure 6 This is a schematic diagram of the overall structure of the positioning mechanism of the present invention; Figure 7 This is a partially exploded structural diagram of the positioning mechanism of the present invention.

[0016] In the diagram: 1. Equipment body; 2. Adjustable mechanism; 201. Cantilever; 202. Flange; 203. Locking nut; 204. Adjusting nut; 205. Elastic chuck; 206. Mounting slot; 207. Grinding head; 3. Positioning mechanism; 301. Positioning base; 302. Electromagnetic coil; 303. Stainless steel plate; 304. Power-off demagnetization module; 305. Auxiliary positioning bracket; 306. Valve shell pressure plate; 307. Clamping screw; 308. Guide screw. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] Example like Figure 1-5 As shown, the device includes a main body 1, an adjustable mechanism 2, and a positioning mechanism 3. The adjustable mechanism 2 is located on one side of the upper part of the main body 1, and the positioning mechanism 3 is located on the main body 1 of the adjustable mechanism 2. The adjustable mechanism 2 includes a cantilever 201, a flange 202, a locking nut 203, an adjusting nut 204, and an elastic clamp 205. The cantilever 201 is installed on the main body 1, and the bottom end of the cantilever 201 is connected to the locking nut 203 through the flange 202. The adjusting nut 204 is threadedly connected to one side of the locking nut 203. The elastic clamp 205 is installed inside the locking nut 203 and the adjusting nut 204. Mechanism 2 also includes a mounting groove 206 and a grinding head 207. The mounting groove 206 is provided on the bottom side of the cantilever 201 for mounting the flange 202. The grinding head 207 is mounted on the elastic chuck 205. An adjusting nut 204 and a locking nut 203 are sequentially fitted on the outside of the mounting groove 206. The inner wall of the adjusting nut 204 is provided with an internal thread, and the outer wall of the mounting groove 206 is provided with an external thread. The adjusting nut 204 and the mounting groove 206 achieve axial position adjustment through the thread structure. The end of the adjusting nut 204 near the elastic chuck 205 is provided with a tapered extrusion surface for extruding the elastic chuck 205 to achieve radial contraction.

[0019] It should be noted that, in this embodiment, the adjustable mechanism 2 serves as the actuating component for the casting and grinding of the valve body. The entire mechanism is mounted on one side of the upper part of the equipment body 1 via a cantilever 201. The cantilever 201 is forged from 45# steel and has sufficient rigidity to ensure the stability of the grinding process. A cylindrical mounting groove 206 is machined on the bottom side of the cantilever 201. A flange 202 is bolted to the inner wall of the mounting groove 206. The outer ring of the flange 202 and the inner ring of the locking nut 203 are rotatably connected via ball bearings, allowing the locking nut 203 to rotate freely relative to the flange 202 without axial displacement. External threads are machined on the outer side of the mounting groove 206, and matching internal threads are machined on the inner wall of the adjusting nut 204. The two are connected by threads. The adjusting nut 204 is located near the elastic clamp 205. The end is provided with a tapered extrusion surface. The elastic chuck 205 is made of spring steel and has twelve axial grooves evenly distributed around its circumference, forming a radially retractable jaw structure. The tail of the elastic chuck 205 is fixed in the mounting groove 206 by an interference fit, and the head extends out of the mounting groove 206 and mates with the tapered extrusion surface of the adjusting nut 204. The grinding head 207 is made of diamond grinding wheel material. After its mounting end is inserted into the inner hole of the elastic chuck 205, the tapered extrusion surface gradually squeezes the head of the elastic chuck 205 by rotating the adjusting nut 204, so that the jaws retract radially and hold the grinding head 207 tightly, thereby securing the grinding head 207. Tighten the locking nut 203 so that its end face fits tightly with the end face of the adjusting nut 204, and lock the position of the adjusting nut 204 by friction to prevent loosening due to vibration during the grinding process. The locking nut 203, located away from the adjusting nut 204, is fixed to the output shaft of the geared motor on one side of the cantilever 201 via a key connection.

[0020] like Figure 6 , 7 As shown, the positioning mechanism 3 includes a positioning base 301, an electromagnetic coil 302, and a stainless steel plate 303. The positioning base 301 is mounted on the equipment body 1. Five sets of electromagnetic coils 302 are embedded in the top of the positioning base 301. The stainless steel plate 303 is laid on the top surface of the positioning base 301. The positioning mechanism 3 also includes a power-off demagnetization module 304, which is used to input a demagnetizing current to the electromagnetic coils 302 when the equipment is stopped, so that the electromagnetic coils 302 are quickly demagnetized. The positioning mechanism 3 also includes an auxiliary positioning bracket 305 and... The valve housing pressure plate 306 and the auxiliary positioning bracket 305 are fixedly connected to the stainless steel plate 303. The valve housing pressure plate 306 is set above the auxiliary positioning bracket 305. The positioning mechanism 3 also includes a clamping screw 307 and a guide screw 308. The clamping screw 307 is internally threaded to the auxiliary positioning bracket 305 and is rotatably connected to the top of the valve housing pressure plate 306. There are two guide screws 308, which are symmetrically distributed on both sides of the clamping screw 307 and are slidably connected to the valve housing pressure plate 306.

[0021] It should be noted that in this embodiment, the positioning mechanism 3 is located on the device body 1 below the adjustable mechanism 2, and is used to position the valve body casting. The positioning base 301 is made of gray cast iron, and its top is machined with five circular grooves. Five sets of electromagnetic coils 302 are embedded in the grooves respectively. Each set of electromagnetic coils 302 is made of enameled wire, with a rated working voltage of DC24V, and can generate a suction force of 150N when energized. The stainless steel plate 303 is made of 304 stainless steel, with a thickness of eight millimeters, and its dimensions are the same as the top surface of the positioning base 301. The matching element is laid on the top surface of the positioning base 301 to provide a reference surface for the valve body. The power-off demagnetization module 304 is integrated inside the positioning base 301, including an STM32 microcontroller control unit, an H-bridge drive circuit, and a current detection module. When the equipment stops, the control unit automatically inputs a decaying alternating current to the electromagnetic coil 302 for three seconds to reduce the residual magnetism to below 0.5mT, which facilitates the quick placement and removal of the stainless steel plate 303. Here, the specific implementation of the electrical connection between the components is a mature existing technology and will not be described further. The auxiliary positioning bracket 305 is fixedly connected to the stainless steel plate 303. A threaded through hole is machined in the middle of the horizontal section. The clamping screw 307 passes through the through hole and is connected to the top of the valve body pressure plate 306 through the thrust bearing. A circular knob is welded to the top of the clamping screw 307, and the surface is knurled to increase friction. Two guide screws 308 are symmetrically distributed on both sides of the clamping screw 307. Their bottom ends are welded and fixed to the auxiliary positioning bracket 305, and their top ends pass through the guide through hole of the valve body pressure plate 306 and are fitted with the through hole to ensure that the valve body pressure plate 306 moves smoothly in the vertical direction. A silicone pad is pasted on the lower surface of the valve body pressure plate 306 to avoid damage to the valve body surface during clamping. During operation, the valve body is placed on the stainless steel plate 303, and the clamping screw 307 is rotated to make the valve body pressure plate 306 descend and clamp the valve body workpiece.

[0022] Working principle of this invention: Refer to the instruction manual appendix Figure 1-7 The positioning mechanism 3 is activated, and the five sets of electromagnetic coils 302 on the positioning base 301 are energized to generate magnetic force, placing the valve shell to be processed on the stainless steel plate 303. The clamping screw 307 on the auxiliary positioning bracket 305 is rotated, which drives the valve shell pressure plate 306 to move down and clamp the valve shell. The guide screws 308 on both sides ensure that the pressure plate moves vertically to avoid the valve shell from shifting, thus completing the pre-fixing of the valve shell. According to the angle requirements of the part of the valve body to be polished, adjust the angle of the adjustable mechanism 2, rotate the adjusting nut 204 in the opposite direction, and the elastic chuck 205 gradually loses the squeezing and releasing elasticity of the adjusting nut 204. At this time, the angle of the polishing head 207 can be adjusted. After the angle adjustment is completed, tighten the locking nut 203 so that its end face fits tightly against the adjusting nut 204, locking the position of the adjusting nut 204. At the same time, the tapered squeezing force of the adjusting nut 204 on the elastic chuck 205 increases, causing the spring steel elastic chuck 205 to shrink through the 12 circumferential axial grooves and firmly hold the mounting end of the grinding head 207, thus locking the angle of the grinding head 207. Then, start the grinding drive component, and the grinding head 207 rotates at high speed to grind the valve body. After grinding, the power-off demagnetization module 304 of the positioning mechanism 3 is activated, inputting demagnetizing current into the electromagnetic coil 302 to quickly eliminate the magnetic force. The clamping screw 307 is rotated in the opposite direction to remove the valve body pressure plate 306, and the processed valve body can be easily taken out, completing one processing cycle.

[0023] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A valve body casting equipment for the production of instrument valves, characterized in that: It includes a device body (1), an adjustable mechanism (2) and a positioning mechanism (3). The adjustable mechanism (2) is disposed on one side of the upper part of the device body (1), and the positioning mechanism (3) is disposed on the device body (1) of the adjustable mechanism (2). The adjustable mechanism (2) includes a cantilever (201), a flange (202), a locking nut (203), an adjusting nut (204), and an elastic clamp (205). The cantilever (201) is installed on the equipment body (1). The bottom end of the cantilever (201) is connected to the locking nut (203) through the flange (202). The adjusting nut (204) is threadedly connected to one side of the locking nut (203). The elastic clamp (205) is installed inside the locking nut (203) and the adjusting nut (204).

2. The valve body casting equipment for manufacturing instrument valves according to claim 1, characterized in that: The adjustable mechanism (2) further includes a mounting groove (206) and a grinding head (207). The mounting groove (206) is provided on the bottom side of the cantilever (201) for mounting the flange (202). The grinding head (207) is mounted on the elastic chuck (205). The adjusting nut (204) and the locking nut (203) are sequentially sleeved on the outside of the mounting groove (206).

3. The valve body casting equipment for manufacturing instrument valves according to claim 2, characterized in that: The inner wall of the adjusting nut (204) is provided with an internal thread, and the outer wall of the mounting groove (206) is provided with an external thread. The adjusting nut (204) and the mounting groove (206) are adjusted in axial position through the thread structure. The end of the adjusting nut (204) near the elastic chuck (205) is provided with a tapered extrusion surface, which is used to extrude the elastic chuck (205) to achieve radial contraction.

4. The valve body casting equipment for manufacturing instrument valves according to claim 1, characterized in that: The flange (202) is rotatably connected to the locking nut (203).

5. A valve body casting equipment for manufacturing instrument valves according to claim 1, characterized in that: The positioning mechanism (3) includes a positioning base (301), an electromagnetic coil (302) and a stainless steel plate (303). The positioning base (301) is installed on the equipment body (1). Five sets of electromagnetic coils (302) are embedded on the top of the positioning base (301). The stainless steel plate (303) is laid on the top surface of the positioning base (301).

6. A valve body casting equipment for manufacturing instrument valves according to claim 5, characterized in that: The positioning mechanism (3) also includes a power-off demagnetization module (304), which is used to input a demagnetizing current to the electromagnetic coil (302) when the equipment is stopped, so that the electromagnetic coil (302) is quickly demagnetized.

7. A valve body casting equipment for manufacturing instrument valves according to claim 5, characterized in that: The positioning mechanism (3) further includes an auxiliary positioning bracket (305) and a valve housing pressure plate (306). The auxiliary positioning bracket (305) is fixedly connected to the stainless steel plate (303), and the valve housing pressure plate (306) is disposed above the auxiliary positioning bracket (305).

8. A valve body casting equipment for manufacturing instrument valves according to claim 5, characterized in that: The positioning mechanism (3) further includes a clamping screw (307) and a guide screw (308). The clamping screw (307) is internally threaded to the auxiliary positioning bracket (305), and the clamping screw (307) is rotatably connected to the top of the valve housing pressure plate (306). The guide screw (308) has two branches symmetrically distributed on both sides of the clamping screw (307) and is slidably connected to the valve housing pressure plate (306).

9. A valve body casting equipment for manufacturing instrument valves according to claim 1, characterized in that: The elastic chuck (205) is made of spring steel and has twelve axial slots evenly distributed around its circumference, so that the elastic chuck (205) forms a radially retractable gripper structure.

10. A valve body casting equipment for manufacturing instrument valves according to claim 2, characterized in that: The mounting end of the grinding head (207) is inserted into the inner hole of the elastic chuck (205) and is fastened by the radial contraction of the elastic chuck (205).

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