CN222957454U - A ductile iron valve body forming die - Google Patents

Abstract

The utility model discloses a nodular cast iron valve body forming die which comprises a first die, wherein a cooling groove is formed in the inner wall of the first die, a second die is arranged at the top of the first die, a casting port is formed in the top of the second die, the nodular cast iron valve body forming die further comprises a demoulding device and an exhaust device, the demoulding device is arranged on the inner wall of the first die, the exhaust device is arranged at the top of the second die, the demoulding device is convenient for demoulding of a valve body after cooling forming, and the exhaust device can empty air in the first die and the second die as soon as possible. The utility model relates to the technical field of valve production dies, in particular to a spheroidal graphite cast iron valve body forming die, wherein a valve body cooled in a first die is pushed outwards through a demoulding device, the valve body can be taken out without overturning a heavy first die, and the valve body taking-out process is time-saving and labor-saving and is simple and convenient, so that the casting efficiency of the valve body is improved.

Description

Nodular cast iron valve body forming die

Technical Field

The utility model relates to the technical field of valve production dies, in particular to a spheroidal graphite cast iron valve body forming die.

Background

The valve is a pipeline accessory for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameter temperature, pressure and flow of a conveying medium, can be divided into a shutoff valve, a check valve, a regulating valve and the like according to the functions of the valve, and is a control part in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, splitting or overflow pressure relief and the like, and is used for a fluid control system, and can range from a simplest stop valve to various valves used in a very complex automatic control system;

At present, when the spheroidal graphite cast iron valve body is cast, the electric push rod is started to drive the limiting plate 4 to move downwards, and the sliding rod at the bottom slides in the sliding groove at one side of the baffle plate when the limiting plate moves, so that the two extrusion rods are mutually close, when the two extrusion rods are close to each other, the extrusion rods are propped against each other and extrude the springs to deform the springs, the propped pressure between the extrusion rods can be relieved, the positioning accuracy between the die bodies can be improved, and the deviation is avoided;

When the traditional spheroidal graphite cast iron valve body forming die is used, after an upper die and a lower die are clamped by an operator, molten iron after melting is poured into the die from a casting port, after the molten iron in the die is cooled into a valve body, the top die is taken down, the first die of the rotating plate can take out the valve body in the die body, and the first die is heavy, so that the mode of taking out the valve body by turning the first die is complicated, and the casting efficiency of the valve body is reduced.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides the spheroidal graphite cast iron valve body forming die, which solves the problems that when the traditional spheroidal graphite cast iron valve body forming die is used, an operator can pour molten iron after melting into the die from a casting port after closing the upper die and the lower die, the top die is taken down after the molten iron in the die is cooled into a valve body, the valve body in the die can be taken out by rotating a first die of a plate, and the valve body is taken out by rotating the first die, so that the casting efficiency of the valve body is reduced due to the fact that the first die is heavier and the mode of taking out the valve body by rotating the first die is more complicated.

The nodular cast iron valve body forming die comprises a first die, wherein a cooling groove is formed in the inner wall of the first die, a second die is arranged at the top of the first die, a casting port is formed in the top of the second die, the nodular cast iron valve body forming die further comprises a demoulding device and an exhaust device, the demoulding device is arranged on the inner wall of the first die, the exhaust device is arranged on the top of the second die, the demoulding device is convenient for demoulding of the valve body after cooling forming, and the exhaust device can exhaust air in the first die and the second die as soon as possible.

Preferably, a limiting rod is installed at the top of the first die, and the outer wall of the limiting rod is movably connected with the inner wall of the second die.

The demolding device comprises a sliding rod, racks, gears, circular plates, round rods, arc grooves, pushing plates and pushing plates, wherein the sliding rod is inserted into the inner wall of a first mold, the racks are arranged at one end of the sliding rod and are in sliding clamping connection with the inner wall of the first mold, the two gears are meshed above the racks, the two circular plates are arranged and are respectively arranged on the back surfaces of the two gears and are in rotary connection with the inner wall of the first mold, the two circular rods are respectively arranged and are respectively arranged on the inner walls of the two circular plates, the arc grooves are in sliding clamping connection with the outer walls of the two circular rods, the pushing plates are arranged above the arc grooves and are in sliding clamping connection with the inner wall of the first mold, the sliding rod drives the circular plates at the back of the gears to rotate through the racks, and the circular plates drive the pushing plates at the tops of the arc grooves to move upwards through the circular rods, so that the molded valve body is demolded.

Preferably, the outer wall of the first die is fixedly connected with a side plate, and the inner wall of the side plate is in threaded connection with a bolt.

Preferably, the exhaust device comprises a shell, an air inlet pipe, baffle plates, torsion springs, sliding plates and a pull rod, wherein the shell is arranged above the second die, the air inlet pipe is arranged on the inner wall of the shell and extends to the inside of the second die, the baffle plates are both connected to the inner wall of the shell through pin shafts in a rotating mode, the torsion springs are both arranged on the outer wall of the baffle plates and are both fixedly connected with the inner wall of the shell, the sliding plates are arranged on the inner wall of the shell, the pull rod is arranged on the outer wall of the sliding plate and is inserted into the inner wall of the shell, when the sliding plate is pulled by the pull rod to move outwards, negative pressure state occurs in the inner wall of the shell, air in the second die pushes the lower baffle plates to rotate, and air in the second die enters the inside the shell through the air inlet pipe.

Advantageous effects

The utility model provides a nodular cast iron valve body forming die. The spheroidal graphite cast iron valve body forming die has the advantages that the valve body cooled in the first die is pushed out through the demoulding device, the valve body can be taken out without overturning the heavy first die, the time and the labor are saved in the valve body taking-out process, and the casting efficiency of the valve body is improved;

The air in the two dies is pumped out through the second die by the exhaust device, so that the two dies are in a negative pressure state, molten iron can rapidly enter the two dies from the casting port, molten iron cannot enter the dies in the later casting stage, and air bubbles cannot be generated between the molten iron and the dies after air is exhausted, so that the casting quality of the valve body is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the housing, air inlet pipe and baffle of FIG. 2;

FIG. 4 is a schematic view of the housing, air inlet pipe and tie rod of FIG. 1;

Fig. 5 is a schematic view of the structure of the slide bar, rack and pinion in fig. 2.

In the figure, 1, a first die, 2, a demoulding device, 201, a slide bar, 202, a rack, 203, a gear, 204, a circular plate, 205, a circular rod, 206, an arc groove, 207, a push plate, 3, a cooling groove, 4, a limit rod, 5, a second die, 6, an exhaust device, 601, a shell, 602, an air inlet pipe, 603, a baffle plate, 604, a torsion spring, 605, a slide plate, 606, a pull rod, 7, a casting nozzle, 8, a side plate, 9 and a bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The components in the present case are sequentially connected by a person skilled in the art, and specific connection and operation sequence should be referred to the following working principle, and the detailed connection means thereof are known in the art, and the following working principle and process are mainly described.

When the traditional spheroidal graphite cast iron valve body forming die is used, after an operator closes the upper die and the lower die, molten iron after melting is poured into the die from the casting port, after the molten iron in the die is cooled into a valve body, the top die is taken down, the first die of the rotating plate can take out the valve body in the die body, and the first die is heavy, so that the mode of taking out the valve body by turning the first die is complicated, and the casting efficiency of the valve body is reduced

In view of the above, the utility model provides a spheroidal graphite cast iron valve body forming die, the cooled valve body in the first die is pushed out through a demoulding device, the valve body can be taken out without overturning the heavy first die, and the valve body taking-out process is time-saving and labor-saving and is simple, so that the casting efficiency of the valve body is improved.

1, 2, 3, 4 And 5, the spheroidal graphite cast iron valve body forming die comprises a first die 1, wherein a cooling groove 3 is arranged on the inner wall of the first die 1, a second die 5 is arranged at the top of the first die 1, a casting nozzle 7 is arranged at the top of the second die 5, a demoulding device 2 is arranged on the inner wall of the first die 1, an exhaust device 6 is arranged at the top of the second die 5, the demoulding device 2 is convenient for demoulding the valve body after cooling forming, and the exhaust device 6 can empty the air in the first die 1 and the second die 5 as soon as possible;

In the specific implementation process, it is worth particularly pointing out that the demolding device 2 is convenient for demolding the valve body, and the exhaust device 6 evacuates the gas in the two molds through the second mold 5;

further, a limiting rod 4 is installed at the top of the first die 1, and the outer wall of the limiting rod 4 is movably connected with the inner wall of the second die 5.

In the specific implementation process, it is worth particularly pointing out that the first die 1 limits the moving direction of the second die through the limiting rod 4, so that the first die 1 and the second die 5 can be conveniently clamped;

specifically, when using this spheroidal graphite cast iron valve body forming die, through inserting the inside of second mould 5 with gag lever post 4, accomplish the compound die of second mould 5 and first mould 1, with molten iron casting from pouring gate 7 to two inside moulds, take out the inside air of two moulds outwards through exhaust apparatus 6 simultaneously, be convenient for melt back molten iron and fill up inside the mould fast, the water piping connects in the both sides of cooling tank 3, let in cooling water inside cooling tank 3, cool off the valve body in two moulds, use shedder 2 to the valve body drawing of patterns after the cooling shaping.

The second embodiment is known from fig. 2 and 5, the demolding device 2 comprises a sliding rod 201 inserted into the inner wall of the first mold 1, a rack 202 installed at one end of the sliding rod 201 and slidably clamped with the inner wall of the first mold 1, two gears 203 arranged to be engaged above the rack 202, two circular plates 204 respectively installed at the back sides of the two gears 203 and rotationally connected with the inner wall of the first mold 1, two circular rods 205 respectively installed at the inner walls of the two circular plates 204, an arc groove 206 slidably clamped with the outer walls of the two circular rods 205, a push plate 207 installed above the arc groove 206 and inserted into the inner wall of the first mold 1, wherein the sliding rod 201 drives the circular plates 204 at the back of the gears 203 to rotate through the rack 202, and the circular plates 204 drive the push plate 207 at the top of the arc groove 206 to move upwards through the circular rods 205, so as to demold the molded valve body;

In the specific implementation process, it is worth particularly pointing out that the pushing slide bar 201 can drive the rack 202 to move, so that the rack 202 drives the circular plate 204 on the gear 203 to rotate, and the circular plate 204 drives the push plate 207 to move upwards through the cooperation of the circular rod 205 and the arc groove 206, so that the valve body in the first die 1 can be pushed to move upwards;

further, the outer wall of the first die 1 is fixedly connected with a side plate 8, and the inner wall of the side plate 8 is in threaded connection with a bolt 9;

In the specific implementation process, it is worth particularly pointing out that after the turning bolt 9 rotates, the first die 1 is fixed through the side plate 8, so that the first die 1 is prevented from moving during use;

Specifically, on the basis of the first embodiment, the slide bar 201 is pushed to move, the slide bar 201 drives the gear 203 to rotate through the rack 202, the gear 203 drives the round rod 205 to move through the circular plate 204, the round rod 205 drives the push plate 207 to move upwards through the arc groove 206, and the push plate 207 moves the valve body formed inside the first die 1 outwards to perform die stripping.

As can be seen from fig. 1, 2, 3 and 4, the exhaust device 6 includes a housing 601 mounted above the second mold 5; an air inlet pipe 602 mounted on the inner wall of the housing 601 and extending to the inside of the second mold 5; the baffle 603 is provided with two baffles, and is rotatably connected to the inner wall of the shell 601 through a pin shaft; the torsion springs 604 are respectively arranged on the outer walls of the baffle 603 and are fixedly connected with the inner wall of the shell 601, the sliding plate 605 is arranged on the inner wall of the shell 601, the pull rod 606 is provided with the outer wall of the sliding plate 605 and is spliced with the inner wall of the shell 601, wherein when the sliding plate 605 is pulled by the pull rod 606 to move outwards, the inner wall of the shell 601 is in a negative pressure state, air in the second mould 5 pushes the lower baffle 603 to rotate, and air in the second mould 5 enters the shell 601 through the air inlet pipe 602;

In the specific implementation process, it is worth particularly pointing out that pulling the pull rod 606 can drive the slide plate 605 to move outwards, the slide plate 605 changes the inside of the shell 1 into a negative pressure state, the air in the second mold 5 pushes the lower baffle 603 to rotate, and the air in the second mold 5 enters the inside of the shell 1 through the air inlet pipe 603, so that the air in the two molds is rapidly extracted;

Specifically, based on the first embodiment, the staff pulls the pull rod 606 to drive the slide plate 605 to move outwards, the slide plate 605 changes the inside of the shell 601 into a negative pressure state, the air in the second die 5 pushes the lower baffle plate 603 to rotate through the air inlet pipe 602, meanwhile, the lower torsion spring 604 is compressed, the air enters the inside of the shell 601, the pull rod 606 is pushed to drive the slide plate 605 to move inwards, the lower torsion spring 604 pushes the lower baffle plate 603 to reset, the air in the shell 601 pushes the upper baffle plate 603 to rotate, and the air in the shell 601 is discharged after the upper baffle plate 603 is opened, so that the air in the two dies is discharged quickly, and molten iron can enter the two dies quickly.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more in the limited case. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, or indirectly connected through an intermediate medium, and may be a communication between two elements or an interaction relationship between two elements, unless explicitly specified otherwise, and it will be understood by those of ordinary skill in the art that the above terms are in specific terms of the present utility model as appropriate.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A ductile iron valve body molding die, comprising a first die (1), characterized in that: a cooling groove (3) is installed on the inner wall of the first die (1), a second die (5) is arranged on the top of the first die (1), a casting port (7) is installed on the top of the second die (5), and the ductile iron valve body molding die further comprises: A demoulding device (2) installed on the inner wall of the first mold (1); An exhaust device (6) is installed on the top of the second mold (5); The demoulding device (2) facilitates demoulding of the valve body after cooling and forming, and the exhaust device (6) can exhaust the air inside the first mold (1) and the second mold (5) as quickly as possible. 2. A ductile iron valve body forming mold according to claim 1, characterized in that a limit rod (4) is installed on the top of the first mold (1), and the outer wall of the limit rod (4) is movably connected to the inner wall of the second mold (5). 3. A ductile iron valve body forming die according to claim 1, characterized in that: the demoulding device (2) comprises: A sliding rod (201) is inserted into the inner wall of the first mold (1); A rack (202) is mounted on one end of the slide bar (201) and is slidably engaged with the inner wall of the first mold (1); Two gears (203) are provided, both meshing with the top of the rack (202); Two circular plates (204) are provided, which are respectively mounted on the back sides of the two gears (203) and are rotatably connected to the inner wall of the first mold (1); Two round rods (205) are provided and respectively mounted on the inner walls of the two circular plates (204); The arc groove (206) is slidably engaged with the outer walls of the two round rods (205); A push plate (207) is installed above the arc groove (206) and plugged into the inner wall of the first mold (1); The sliding rod (201) drives the circular plate (204) on the back of the gear (203) to rotate through the rack (202), and the circular plate (204) drives the push plate (207) on the top of the arc groove (206) to move upward through the round rod (205), thereby demoulding the molded valve body. 4. A ductile iron valve body forming mold according to claim 1, characterized in that: the outer wall of the first mold (1) is fixedly connected to a side plate (8), and the inner wall of the side plate (8) is threadedly connected to a bolt (9). 5. The ductile iron valve body forming die according to claim 1, characterized in that: the exhaust device (6) comprises: A housing (601) is installed above the second mold (5); an air inlet pipe (602) mounted on the inner wall of the housing (601) and extending to the interior of the second mold (5); Two baffles (603) are provided, and both are rotatably connected to the inner wall of the housing (601) via a pin shaft; Two torsion springs (604) are provided, respectively mounted on the outer wall of the baffle (603), and both are fixedly connected to the inner wall of the housing (601); A slide plate (605) is mounted on the inner wall of the housing (601); A pull rod (606) is installed on the outer wall of the slide plate (605) and plugged into the inner wall of the housing (601); When the pull rod (606) pulls the slide plate (605) to move outward, a negative pressure state appears on the inner wall of the shell (601), and the air inside the second mold (5) pushes the lower baffle (603) to rotate, and the air inside the second mold (5) enters the shell (601) through the air inlet pipe (602).