Valve casting forming die

Abstract

The utility model discloses a valve casting forming mold, which belongs to the field of valve production and comprises a support column, a support plate fixedly connected to the top of the support column, a lower mold arranged at the top of the support plate, a mold closing mechanism arranged above the lower mold, a demolding mechanism arranged at the bottom of the lower mold, a bottom plate and a plurality of side plates, the bottom plate is fixedly connected to the top of the supporting plate, the side plate is slidably connected to the top of the bottom plate, and adjusting mechanisms are arranged on the periphery of the lower mold. The device has the beneficial effects that the adjusting mechanism is arranged and comprises a connecting rod and an extension rod, the ends, close to each other, of the connecting rod and the extension rod are both in a wedge shape, an electric push rod is used for driving a transverse plate to drive an ejector rod to move upwards, and when a valve casting is ejected out, the connecting rod can drive side plates to move in the direction away from each other under driving of the extension rod; the gap between the side plate and the valve casting is enlarged, friction between the side plate and the valve casting is reduced, and the quality of the valve casting is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the field of valve production, in particular to a valve casting molding die. Background Art

[0002] Valves are pipe accessories used to open and close pipes, control flow direction, and adjust and control the parameters of the conveyed medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems, with functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves are usually made by casting technology.

[0003] After searching, the Chinese patent announcement number CN217393724U is found, which discloses a casting device for producing high-quality valve castings. The casting device for producing high-quality valve castings, when the valve casting is formed, drives the threaded column to rotate through a motor, so that the first threaded sleeve and the second threaded sleeve are close to each other, and the valve casting formed in the lower mold is pushed out by pushing the movable column and the movable plate through the first connecting plate and the second connecting plate; the goal of quickly removing the formed valve from the casting mold is achieved, avoiding the trouble of removing the high-quality valve casting after casting, and making the casting device for high-quality valve castings more convenient to use.

[0004] However, most existing molds have a fixed size. Therefore, when the valve casting formed in the lower mold is pushed out by the movable column and the movable plate, a large friction will be generated between the valve casting and the inner wall of the lower mold, which may cause wear to the valve casting and affect the quality of the valve casting. Utility Model Content

[0005] The purpose of the utility model is to provide a valve casting molding die in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A valve casting molding mold comprises a support column, the top of the support column is fixedly connected to a support plate, a lower mold is arranged on the top of the support plate, a clamping mechanism is arranged above the lower mold, a demoulding mechanism is arranged at the bottom of the lower mold, the demoulding mechanism comprises a transverse plate, the lower mold is composed of a bottom plate and a plurality of side plates, the bottom plate is fixedly connected to the top of the support plate, the side plates are slidably connected to the top of the bottom plate, an adjustment mechanism is arranged around the lower mold, the adjustment mechanism comprises a connecting rod fixedly connected to the outer wall of the side plate, an extension rod corresponding to the connecting rod is fixedly connected around the transverse plate, the ends of the connecting rod and the extension rod close to each other are both wedge-shaped, a plurality of vertical plates are fixedly connected to the top of the support plate, and springs are connected between the vertical plates and the connecting rods.

[0008] Preferably, the connecting rod is slidably connected in the support plate, and the bottom of the connecting rod extends below the support plate.

[0009] Preferably, a plurality of through holes are provided at the bottom of the base plate.

[0010] Preferably, the mold clamping mechanism includes a support frame fixedly connected to the top of the support plate, a hydraulic cylinder fixedly connected to the support frame, an upper mold fixedly connected to the bottom of the hydraulic cylinder, and an injection pipe fixedly connected to the top of the upper mold.

[0011] Preferably, the demolding mechanism includes a mounting frame fixedly connected to the bottom of the support plate, an electric push rod fixedly connected to the mounting frame, the top of the electric push rod fixedly connected to the cross plate, the top of the cross plate fixedly connected to a plurality of push rods, the shape and size of the push rods are consistent with the through holes opened at the bottom of the base plate, and the push rods are slidably connected in the through holes opened at the bottom of the base plate.

[0012] Preferably, a plurality of limiting plates are fixedly connected to the outer wall of the upper mold.

[0013] The beneficial effect is that an adjustment mechanism is provided, the adjustment mechanism includes a connecting rod and an extension rod, the ends of the connecting rod and the extension rod that are close to each other are both wedge-shaped, and the electric push rod is used to drive the cross plate to drive the push rod to move upward, and the valve casting is ejected. At the same time, the connecting rod is driven by the extension rod to drive the side plates to move away from each other, thereby increasing the gap between the side plates and the valve casting, reducing the friction between the side plates and the valve casting, and avoiding affecting the quality of the valve casting.

[0014] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of a valve casting molding die described in the utility model;

[0017] Figure 2 It is a front view of a valve casting molding die of the utility model;

[0018] Figure 3 It is a top view of a valve casting molding die described in the utility model;

[0019] Figure 4 It is a right side view of a valve casting molding die described in the utility model;

[0020] Figure 5It is a top view of a lower mold of a valve casting molding mold described in the utility model.

[0021] The reference numerals in the accompanying drawings are as follows: 1. Support column; 2. Support plate; 3. Lower mold; 301. Bottom plate; 302. Side plate; 4. Mold clamping mechanism; 401. Support frame; 402. Hydraulic cylinder; 403. Upper mold; 404. Injection pipe; 405. Limit plate; 5. Demolding mechanism; 501. Mounting frame; 502. Electric push rod; 503. Horizontal plate; 504. Push rod; 6. Adjustment mechanism; 601. Connecting rod; 602. Extension rod; 603. Vertical plate; 604. Spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] like Figure 1-Figure 5 As shown, a valve casting molding mold includes a support column 1, a support plate 2 is fixedly connected to the top of the support column 1, a lower mold 3 is arranged on the top of the support plate 2, and the lower mold 3 is composed of a bottom plate 301 and a plurality of side plates 302. The bottom plate 301 is fixedly connected to the top of the support plate 2, and a plurality of through holes are opened at the bottom of the bottom plate 301 for easy demoulding, and the side plates 302 are slidably connected to the top of the bottom plate 301;

[0026] A clamping mechanism 4 is arranged above the lower mold 3, and the clamping mechanism 4 includes a support frame 401 bolted to the top of the support plate 2, a hydraulic cylinder 402 is fixedly connected to the support frame 401, an upper mold 403 is fixedly connected to the bottom of the hydraulic cylinder 402, a liquid injection pipe 404 is welded to the top of the upper mold 403, and a plurality of limit plates 405 are bolted to the outer wall of the upper mold 403, and the side plate 302 is limited by the limit plates 405 to prevent the position of the side plate 302 from being offset;

[0027] A demoulding mechanism 5 is provided at the bottom of the lower mold 3. The demoulding mechanism 5 includes a mounting frame 501 bolted to the bottom of the support plate 2. An electric push rod 502 is fixedly connected to the mounting frame 501. A cross plate 503 is fixedly connected to the top of the electric push rod 502. A plurality of ejector rods 504 are plugged into the top of the cross plate 503. The shape and size of the ejector rods 504 are consistent with those of the through holes. The ejector rods 504 are slidably connected to the through holes opened at the bottom of the bottom plate 301. During casting, the top of the ejector rod 504 is at the same horizontal plane as the top of the bottom plate 301, which is convenient for filling the through holes and preventing raw materials from leaking into the through holes. During demoulding, the electric push rod 502 is controlled to make the cross plate 503 drive the ejector rod 504 to move upward to eject the valve casting.

[0028] An adjusting mechanism 6 is arranged around the lower mold 3, and the adjusting mechanism 6 includes a connecting rod 601 inserted into the outer wall of the side plate 302, and the connecting rod 601 is slidably connected in the support plate 2, and the bottom of the connecting rod 601 extends to the bottom of the support plate 2, and the extension rod 602 corresponding to the connecting rod 601 is fixedly connected around the cross plate 503, and the ends of the connecting rod 601 and the extension rod 602 that are close to each other are both wedge-shaped, so that when the extension rod 602 moves upward, it can drive the connecting rod 601 to drive the side plate 302 to move away from each other, thereby increasing the gap between the side plate 302 and the valve casting, thereby reducing the friction between the side plate 302 and the valve casting, and the top bolts of the support plate 2 are connected with multiple vertical plates 603, and springs 604 are connected between the vertical plates 603 and the connecting rod 601.

[0029] Working principle: When in use, the upper mold 403 is brought into contact with the lower mold 3 by controlling the hydraulic cylinder 402 to achieve mold closing. At this time, the limit plate 405 is tightly attached to the outer side of the side plate 302 to limit the side plate 302 to prevent the position of the side plate 302 from being offset. Then, the molten raw material is injected into the upper mold 403 and the lower mold 3 through the injection pipe 404. After it is cooled and formed, the upper mold 403 is separated from the lower mold 3 by controlling the hydraulic cylinder 402. The electric push rod 502 is controlled to make the cross plate 503 drive the ejector rod 504 to move upward to eject the valve casting for easy demoulding. When the cross plate 503 moves upward, it will drive the surrounding extension rods 602 to move upward. The extension rod 602 moves upward and drives the connecting rod 601 to drive the side plate 302 to move away from each other, thereby increasing the gap between the side plate 302 and the valve casting, thereby reducing the friction between the side plate 302 and the valve casting, avoiding wear on the valve casting and affecting the quality of the valve casting.

[0030] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A valve casting molding die, comprising a support column, a support plate fixedly connected to the top of the support column, a lower die arranged on the top of the support plate, a clamping mechanism arranged above the lower die, a demoulding mechanism arranged at the bottom of the lower die, the demoulding mechanism comprising a horizontal plate, characterized in that: The lower mold is composed of a bottom plate and multiple side plates, the bottom plate is fixedly connected to the top of the support plate, the side plates are slidably connected to the top of the bottom plate, and adjustment mechanisms are arranged around the lower mold, the adjustment mechanism includes a connecting rod fixedly connected to the outer wall of the side plate, and extension rods corresponding to the connecting rods are fixedly connected around the cross plate, and the ends of the connecting rods and the extension rods that are close to each other are both wedge-shaped, and multiple vertical plates are fixedly connected to the top of the support plate, and springs are connected between the vertical plates and the connecting rods.

2. A valve casting molding die according to claim 1, characterized in that: The connecting rod is slidably connected in the supporting plate, and the bottom of the connecting rod extends below the supporting plate.

3. The valve casting mold according to claim 1, characterized in that: A plurality of through holes are provided at the bottom of the bottom plate.

4. The valve casting molding die according to claim 1, characterized in that: The mold clamping mechanism comprises a support frame fixedly connected to the top of the support plate, a hydraulic cylinder fixedly connected to the support frame, an upper mold fixedly connected to the bottom of the hydraulic cylinder, and an injection pipe fixedly connected to the top of the upper mold.

5. The valve casting molding die according to claim 3, characterized in that: The demoulding mechanism includes a mounting frame fixedly connected to the bottom of the support plate, an electric push rod fixedly connected to the mounting frame, the top of the electric push rod fixedly connected to the cross plate, a plurality of push rods fixedly connected to the top of the cross plate, the shape and size of the push rods are consistent with the through holes opened at the bottom of the base plate, and the push rods are slidably connected in the through holes opened at the bottom of the base plate.

6. The valve casting molding die according to claim 4, characterized in that: A plurality of limiting plates are fixedly connected to the outer wall of the upper mold.

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