A device and method for solving the shrinkage and leakage problem of valve body castings

Abstract

The present invention discloses a device and method for solving the shrinkage and leakage problem of valve body castings, and relates to the field of shrinkage and leakage of valve body castings. The device and method for solving the shrinkage and leakage problem of valve body castings include an upper molding plate and a plurality of upper molding grooves, a lower molding plate is provided directly below the upper molding plate, and the upper molding grooves are provided on the upper molding plate. The device and method for solving the shrinkage and leakage problem of valve body castings, raw materials enter the molding seat through the upper molding grooves and the lower molding grooves, and small iron rods are formed in the molding seat. Subsequently, the small iron rods are rapidly cooled and solidified, which has a chilling effect on the thick and large parts in contact with them, thereby increasing the cooling speed of the thick and large parts, making the thick and large parts densely organized, avoiding shrinkage defects in the valves molded in the upper molding grooves and the lower molding grooves, and solving the problem of pressure leakage in the central drilling part of the valve.

Description

Technical Field

[0001] The invention relates to the technical field of shrinkage and leakage of valve body castings, and in particular to a device and a method for solving the shrinkage and leakage problems of valve body castings. Background Art

[0002] The valve body is a component in the water cooling circulation system of a heavy-duty truck. It is a cast part that is processed. A common problem with this component is leakage when pressure is applied to the center drill hole after processing. The reason for this leakage is shrinkage inside the casting.

[0003] The traditional solution to the shrinkage problem of castings is to set risers for shrinkage compensation. However, the valve body has a special structure. The middle drilling part is thick and large, and there is a core blocking the surrounding area, making it difficult to compensate for shrinkage through ordinary risers.

[0004] In order to solve the shrinkage problem of the valve body, the cooling rate of the middle thick part is increased to make the casting dense, so that the thick part can be densely organized, avoiding the shrinkage defect and the problem of pressure leakage. Therefore, we propose a device and method for solving the shrinkage and leakage problem of valve body castings. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a device and method for solving the shrinkage and leakage problems of valve body castings, thereby solving the problem of pressure leakage caused by shrinkage defects inside the castings.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device and method for solving the shrinkage and leakage problem of valve body castings, comprising:

[0009] an upper forming plate, wherein a lower forming plate is provided directly below the upper forming plate;

[0010] a plurality of upper forming grooves, wherein the upper forming grooves are arranged on the upper forming plate;

[0011] A main groove, the main groove being formed on the inner wall of the upper forming plate;

[0012] A connecting assembly is provided between the upper forming plate and the lower forming plate, the connecting assembly comprising a plurality of fixing bolts, two main positioning blocks and a plurality of secondary positioning blocks, the two main positioning blocks and the plurality of secondary positioning blocks being connected to the upper forming plate;

[0013] Multiple upper forming grooves and lower forming plates are provided with replacement components, which include a forming seat, a fixing seat, and multiple guide seats. The fixing seat is connected to the corresponding upper forming groove or lower forming plate, and the forming seat is inserted into the inner wall of the fixing seat.

[0014] Preferably, the lower surface of the lower forming plate is connected to a lower riser, a plurality of lower forming grooves are provided on the inner wall of the lower forming plate, the plurality of lower forming grooves correspond to the plurality of upper forming grooves, a feed port is provided at the center position of the upper forming plate, a main groove is provided on the inner wall of the upper forming plate, and the main groove is communicated with the feed port.

[0015] Preferably, two branch grooves are provided on the inner wall of the upper forming plate, the main groove is connected to the two branch grooves, a plurality of liquid inlet grooves are provided on the outer surface of the branch groove, an upper riser is provided on the branch groove, and the upper riser is connected to the upper surface of the upper forming plate.

[0016] Preferably, a plurality of material storage grooves are provided on the inner wall of the upper riser, the material storage grooves correspond to the connection between the liquid inlet groove, the liquid inlet groove is connected with the corresponding upper forming groove, a positioning groove is provided on the lower forming plate, the positioning groove is fitted with two main positioning blocks and multiple slave positioning blocks, a plurality of the fixing bolts are connected with the corresponding main positioning blocks and slave positioning blocks, and a plurality of positioning seats are provided on the upper forming groove and the lower forming plate.

[0017] Preferably, the positioning seat is fitted with the corresponding forming seat, the positioning seat is inside the fixed seat, and a contact seat is slidably connected between the positioning seat and the fixed seat. A plurality of springs are provided on the lower surface of the contact seat, and the other end of the spring is connected to the corresponding upper forming groove or lower forming plate.

[0018] Preferably, the upper surface of the contact seat is in contact with the forming seat and multiple guide seats, the multiple guide seats are connected to the outer surface of the forming seat, a connecting groove is provided inside the fixed seat, the guide seat is slidably connected to the inner wall of the connecting groove, and multiple guide grooves and plug-in grooves are provided on the inner wall of the fixed seat.

[0019] Preferably, a plug-in column is inserted into the inner wall of the plug-in slot, and the upper surfaces of multiple plug-in columns are connected to a connecting seat, which is connected to the outer surface of the forming seat. A sleeve is fitted on the upper surface of the connecting seat, and the sleeve is threadedly connected to the outer surface of the fixing seat.

[0020] S1: By inserting two main positioning blocks and multiple slave positioning blocks on the inner wall of the positioning groove, the upper forming plate and the lower forming plate are aligned and fitted together, and the upper forming plate and the lower forming plate are fixedly connected by bolts;

[0021] S2: The raw material is poured into the upper and lower molding plates through the feed port. At this time, it flows along the main groove into the two branch grooves. At the same time, the liquid inlet grooves on the outer surfaces of the two branch grooves enter the multiple upper molding grooves and lower molding grooves, and is shaped in the upper and lower molding grooves.

[0022] S3: At the same time, the raw materials enter the forming seat through the upper and lower forming grooves, forming small iron rods in the forming seat. The small iron rods then cool and solidify rapidly, which has a chilling effect on the thick and large parts in contact with them, thereby increasing the cooling rate of the thick and large parts, making the thick and large parts denser, avoiding shrinkage defects in the valves formed in the upper and lower forming grooves, and solving the problem of pressure leakage in the center drilled part of the valve;

[0023] S4: When the forming seat needs to be replaced, the sleeve is rotated to separate the sleeve from the fixed seat. At this time, the sleeve can be taken out of the forming seat. Under the rebound of the spring, the contact seat moves in the opposite direction, pushing the forming seat to move in the opposite direction, driving the plug-in column to separate from the plug-in slot;

[0024] S5: Rotate the forming seat to rotate the multiple guide seats. When the guide seat and the guide groove coincide with each other, the guide seat slides along the guide groove under the push of the contact seat. Then the forming seat can be taken out. When the designated forming seat is inserted into the interior of the fixed seat, the guide seat and the contact seat contact and squeeze. At this time, the forming seat is rotated so that the plug-in column on the outer surface of the forming seat corresponds to the plug-in groove.

[0025] S6: Loosen the forming seat. Under the push of the contact seat, the guide seat is fitted with the inner wall of the fixed seat. At this time, the sleeve is sleeved on the outer surface of the forming seat and the sleeve is threadedly connected to the fixed seat. At this time, the sleeve slides downward along the outer surface of the fixed seat, so that the sleeve squeezes the connecting seat.

[0026] S7: Under the action of the connecting seat and the contact seat, the position of the forming seat is fixed, thereby completing the replacement of the forming seat. Then, by pouring the raw materials into the upper forming plate and the lower forming plate, different small iron rods are formed inside the forming seat. Under the action of the small iron rods, the thick and large parts in contact with them are chilled, so that the thick and large parts can be densely organized and shrinkage defects are avoided.

[0027] The present invention discloses a device and method for solving the shrinkage and leakage problem of valve body castings, which has the following beneficial effects:

[0028] 1. The device and method for solving the shrinkage and leakage problems of valve body castings are as follows: when pouring, the raw materials enter the upper riser and the storage trough through the branch trough, and the storage trough plays a shrinkage compensation role, thereby preventing the molded valve body in the lower molding trough and the upper molding trough from having shrinkage holes, shrinkage, exhaust and slag accumulation.

[0029] 2. The device and method for solving the shrinkage and leakage problems of valve body castings are as follows: the raw material enters the forming seat through the upper and lower forming grooves, forming small iron rods in the forming seat. The small iron rods then quickly cool and solidify, which has a chilling effect on the thick and large parts in contact with them, thereby increasing the cooling rate of the thick and large parts, making the thick and large parts dense, avoiding shrinkage defects in the valves formed in the upper and lower forming grooves, and solving the problem of pressure leakage at the center drilled hole of the valve.

[0030] 3. The device and method for solving the shrinkage and leakage problem of valve body castings separates the forming seat from the fixed seat by replacing the components. At this time, the forming seat can be taken out and the designated forming seat is inserted into the inner wall of the fixed seat. Under the action of the replacement component, the position of the forming seat is fixed, thereby completing the replacement of the forming seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the back structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the upper surface structure of the lower forming plate of the present invention;

[0035] Figure 4 This is a schematic diagram of the bottom structure of the upper forming plate of the present invention;

[0036] Figure 5 Schematic diagram of the upper riser structure of the present invention;

[0037] Figure 6 This is a schematic structural diagram of the forming seat of the present invention;

[0038] Figure 7 This is a structural schematic diagram of the fixing seat of the present invention;

[0039] Figure 8 This is a cross-sectional view of the fixing seat of the present invention;

[0040] Figure 9 This is a schematic structural diagram of the connecting seat of the present invention;

[0041] Figure 10 Schematic diagram of the internal structure of the fixing seat of the present invention.

[0042] In the figure: 1. Upper forming plate; 101. Lower forming plate; 2. Upper forming groove; 201. Lower forming groove; 202. Feed port; 203. Lower riser; 3. Fixing bolt; 301. Main positioning block; 302. Slave positioning block; 303. Positioning groove; 4. Main groove; 401. Branch groove; 402. Liquid inlet groove; 403. Upper riser; 404. Material storage groove; 5. Forming seat; 501. Fixed seat; 502. Sleeve; 503. Positioning seat; 6. Guide seat; 601. Connecting seat; 602. Plug-in column; 603. Guide groove; 604. Connecting groove; 605. Plug-in groove; 7. Contact seat; 701. Spring. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] The embodiment of the present application solves the problem of shrinkage and leakage of valve body castings due to pressure-induced leakage caused by shrinkage defects inside the castings by providing a method. The raw materials enter the forming seat 5 through the upper forming groove 2 and the lower forming groove 201, and small iron rods are formed in the forming seat 5. The small iron rods are then rapidly cooled and solidified, which has a chilling effect on the thick and large parts in contact with them, thereby increasing the cooling speed of the thick and large parts, making the thick and large parts densely organized, avoiding shrinkage defects in the valves formed in the upper forming groove 2 and the lower forming groove 201, and solving the problem of pressure leakage in the center drilling part of the valve.

[0045] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0046] Example 1

[0047] The embodiment of the present invention discloses a device and a method for solving the shrinkage and leakage problem of a valve body casting.

[0048] According to the attached Figure 1-10 As shown, it includes an upper forming plate 1, a plurality of upper forming grooves 2 and a main groove 4. A lower forming plate 101 is provided directly below the upper forming plate 1. The upper forming grooves 2 are provided on the upper forming plate 1, and the main grooves 4 are provided on the inner wall of the upper forming plate 1.

[0049] A connecting assembly is provided between the upper forming plate 1 and the lower forming plate 101. The connecting assembly includes a plurality of fixing bolts 3, two main positioning blocks 301 and a plurality of secondary positioning blocks 302. The two main positioning blocks 301 and the plurality of secondary positioning blocks 302 are connected to the upper forming plate 1.

[0050] A replacement assembly is provided on each of the upper forming grooves 2 and the lower forming plate 101. The replacement assembly includes a forming seat 5, a fixing seat 501, and a plurality of guide seats 6. The fixing seat 501 is connected to the corresponding upper forming groove 2 or lower forming plate 101, and the forming seat 5 is plugged into the inner wall of the fixing seat 501.

[0051] The lower surface of the lower forming plate 101 is connected to a lower riser 203. The inner wall of the lower forming plate 101 is provided with a plurality of lower forming grooves 201, which correspond to the plurality of upper forming grooves 2. A feed port 202 is provided at the center of the upper forming plate 1. A main groove 4 is provided on the inner wall of the upper forming plate 1, which is connected to the feed port 202.

[0052] Two branch grooves 401 are formed on the inner wall of the upper forming plate 1. The main groove 4 is connected to the two branch grooves 401. A plurality of liquid inlet grooves 402 are formed on the outer surface of the branch groove 401. An upper riser 403 is provided on the branch groove 401.

[0053] The upper riser 403 is connected to the upper surface of the upper forming plate 1. A plurality of material storage grooves 404 are provided on the inner wall of the upper riser 403. The material storage grooves 404 correspond to the connection points of the liquid inlet grooves 402. The liquid inlet grooves 402 are connected to the corresponding upper forming grooves 2.

[0054] When it is necessary to process and cast the valve body parts in the water cooling circulation system of a truck, first, the upper forming plate 1 is fitted with the lower forming plate 101, and the upper forming plate 1 and the lower forming plate 101 are fixedly connected under the action of the connecting assembly;

[0055] At this time, the raw material is poured into the upper molding plate 1 and the lower molding plate 101 through the feed port 202, and flows into the two branch grooves 401 along the main groove 4. At the same time, the liquid inlet grooves 402 on the outer surface of the two branch grooves 401 enter the multiple upper molding grooves 2 and the lower molding grooves 201, and are shaped in the upper molding grooves 2 and the lower molding grooves 201;

[0056] During pouring, the raw material enters the upper riser 403 and the storage trough 404 through the branch trough 401, and the storage trough 404 plays a shrinkage compensation role, preventing the formation of shrinkage holes, shrinkage, exhaust and slag accumulation in the molding valve body in the lower molding trough 201 and the upper molding trough 2.

[0057] At the same time, the raw materials enter the forming seat 5 through the upper forming groove 2 and the lower forming groove 201, forming small iron rods in the forming seat 5. Then the small iron rods cool and solidify quickly, which has a chilling effect on the thick and large parts in contact with them, thereby increasing the cooling speed of the thick and large parts, making the thick and large parts dense, avoiding shrinkage defects in the valves formed in the upper forming groove 2 and the lower forming groove 201, and solving the problem of pressure leakage in the center drilling part of the valve.

[0058] Usually, two forming seats 5 with a bottom diameter of 10 mm, an upper diameter of 5 mm, and a height of 100 mm are set on the upper and lower sides of the thick drilling part in the middle. However, in order to make the small iron rod in the forming seat 5 effectively play a chilling role and ensure the qualification of the product, it is sometimes necessary to replace the forming seat 5 according to the valve produced.

[0059] First, the forming seat 5 is separated from the fixing seat 501 by replacing the components. At this time, the forming seat 5 can be taken out, and then the designated forming seat 5 is inserted into the inner wall of the fixing seat 501. Under the action of the replacement components, the position of the forming seat 5 is fixed;

[0060] Thus, the replacement of the forming seat 5 is completed, and then by pouring the raw materials into the upper forming plate 1 and the lower forming plate 101, different small iron rods are formed inside the forming seat 5. Under the action of the small iron rods, the thick and large parts in contact with them are chilled, so that the thick and large parts can be densely organized and shrinkage defects are avoided.

[0061] Example 2

[0062] The embodiment of the present invention discloses a device and a method for solving the shrinkage and leakage problem of a valve body casting.

[0063] According to the attached Figure 3 and Figure 4 As shown, a connecting assembly is provided between the upper forming plate 1 and the lower forming plate 101, and the connecting assembly includes a plurality of fixing bolts 3, two main positioning blocks 301 and a plurality of secondary positioning blocks 302, and the two main positioning blocks 301 and the plurality of secondary positioning blocks 302 are connected to the upper forming plate 1;

[0064] The lower forming plate 101 is provided with a positioning groove 303, which fits in with the two main positioning blocks 301 and the plurality of secondary positioning blocks 302, and the plurality of fixing bolts 3 are connected with the corresponding main positioning blocks 301 and secondary positioning blocks 302;

[0065] By inserting two main positioning blocks 301 and multiple secondary positioning blocks 302 into the inner wall of the positioning groove 303, the upper forming plate 1 and the lower forming plate 101 are aligned and fitted together. At this time, by inserting bolts into the inner walls of the main positioning blocks 301 and the secondary positioning blocks 302, the upper forming plate 1 and the lower forming plate 101 are fixedly connected.

[0066] Example 3:

[0067] The embodiment of the present invention discloses a device and a method for solving the shrinkage and leakage problem of a valve body casting.

[0068] According to the attached Figure 6-10 As shown, a plurality of upper forming grooves 2 and a lower forming plate 101 are provided with replacement components, which include a forming seat 5, a fixing seat 501, and a plurality of guide seats 6. The fixing seat 501 is connected to the corresponding upper forming groove 2 or the lower forming plate 101, and the forming seat 5 is plugged into the inner wall of the fixing seat 501;

[0069] A plurality of positioning seats 503 are provided on the upper forming groove 2 and the lower forming plate 101. The positioning seats 503 fit in with the corresponding forming seats 5, and the positioning seats 503 are located inside the fixing seats 501.

[0070] A contact seat 7 is slidably connected between the positioning seat 503 and the fixing seat 501. A plurality of springs 701 are provided on the lower surface of the contact seat 7. The other ends of the springs 701 are connected to the corresponding upper molding groove 2 or lower molding plate 101.

[0071] The upper surface of the contact seat 7 is in contact with the forming seat 5 and the plurality of guide seats 6. The plurality of guide seats 6 are connected to the outer surface of the forming seat 5. A connecting groove 604 is provided inside the fixing seat 501. The guide seats 6 are slidably connected to the inner wall of the connecting groove 604. The inner wall of the fixing seat 501 is provided with a plurality of guide grooves 603 and a plug-in groove 605.

[0072] The inner wall of the plug-in slot 605 is plugged with a plug-in column 602, and the upper surface of the multiple plug-in columns 602 is connected to the connecting seat 601, which is connected to the outer surface of the forming seat 5. The upper surface of the connecting seat 601 is attached to the sleeve 502, which is threadedly connected to the outer surface of the fixing seat 501;

[0073] At this time, the sleeve 502 is rotated to separate the sleeve 502 from the fixing seat 501. The sleeve 502 can be removed from the forming seat 5. Under the rebound of the spring 701, the contact seat 7 moves in the opposite direction, pushing the forming seat 5 to move in the opposite direction, driving the plug post 602 to separate from the plug slot 605.

[0074] Rotate the forming seat 5 to rotate the multiple guide seats 6. When the guide seats 6 coincide with the guide grooves 603, the guide seats 6 slide along the guide grooves 603 under the push of the contact seat 7. Then, the forming seat 5 can be taken out.

[0075] At this time, when the designated forming seat 5 is inserted into the interior of the fixing seat 501, the guide seat 6 contacts and squeezes the contact seat 7. At this time, the forming seat 5 is rotated so that the plug-in column 602 on the outer surface of the forming seat 5 corresponds to the plug-in groove 605;

[0076] At this time, the forming seat 5 is released, and the guide seat 6 is pushed by the contact seat 7 to fit the inner wall of the fixing seat 501. At this time, the sleeve 502 is sleeved on the outer surface of the forming seat 5, and the sleeve 502 is threadedly connected to the fixing seat 501. At this time, the sleeve 502 slides downward along the outer surface of the fixing seat 501, so that the sleeve 502 squeezes the connecting seat 601;

[0077] At this time, under the action of the connecting seat 601 and the contact seat 7, the position of the forming seat 5 is fixed, thereby completing the replacement of the forming seat 5. Then, by pouring the raw materials into the upper forming plate 1 and the lower forming plate 101, different small iron rods are formed inside the forming seat 5. Under the action of the small iron rods, the thick and large parts in contact with them are chilled, so that the thick and large parts can be densely organized, avoiding shrinkage defects.

[0078] Working principle: When it is necessary to process and cast the valve body parts in the water cooling circulation system of a truck, firstly, the upper forming plate 1 is fitted with the lower forming plate 101;

[0079] The two main positioning blocks 301 and the plurality of secondary positioning blocks 302 fixedly connected on the inner wall of the upper forming plate 1 are inserted into the inner wall of the positioning groove 303 provided on the lower forming plate 101, so that the upper forming plate 1 and the lower forming plate 101 are aligned and fitted together. At this time, the upper forming plate 1 and the lower forming plate 101 are fixedly connected by inserting bolts into the inner walls of the main positioning blocks 301 and the secondary positioning blocks 302.

[0080] At this time, the raw material is poured into the upper molding plate 1 and the lower molding plate 101 through the feed port 202, and flows into the two branch grooves 401 along the main groove 4. At the same time, the liquid inlet grooves 402 on the outer surface of the two branch grooves 401 enter the multiple upper molding grooves 2 and the lower molding grooves 201, and are shaped in the upper molding grooves 2 and the lower molding grooves 201;

[0081] During pouring, the raw material enters the upper riser 403 and the storage trough 404 through the branch trough 401, and the storage trough 404 plays a shrinkage compensation role, preventing the formation of shrinkage holes, shrinkage, exhaust and slag accumulation in the molding valve body in the lower molding trough 201 and the upper molding trough 2.

[0082] At the same time, the raw materials enter the forming seat 5 through the upper forming groove 2 and the lower forming groove 201, forming small iron rods in the forming seat 5. Then the small iron rods cool and solidify quickly, which has a chilling effect on the thick and large parts in contact with them, thereby increasing the cooling speed of the thick and large parts, making the thick and large parts dense, avoiding shrinkage defects in the valves formed in the upper forming groove 2 and the lower forming groove 201, and solving the problem of pressure leakage in the center drilling part of the valve.

[0083] Usually, two forming seats 5 with a bottom diameter of 10 mm, an upper diameter of 5 mm, and a height of 100 mm are set on the upper and lower surfaces of the thick drilling part in the middle. However, in order to make the small iron rod in the forming seat 5 effectively play a chilling role and ensure the quality of the product, it is sometimes necessary to replace the forming seat 5 according to the valve to be produced. At this time, the sleeve 502 is rotated to separate the sleeve 502 from the fixed seat 501, and the sleeve 502 can be removed from the forming seat 5.

[0084] At this time, under the rebound of the spring 701, the contact seat 7 moves in the opposite direction, pushing the forming seat 5 and the multiple guide seats 6 to move in the opposite direction. Under the movement of the forming seat 5, the connecting seat 601 fixedly connected to the outer surface of the forming seat 5 moves in the opposite direction, driving the plug-in column 602 fixedly connected to the lower surface to separate from the plug-in slot 605;

[0085] At this time, the forming seat 5 is rotated, so that the forming seat 5 drives the multiple guide seats 6 to rotate on the inner wall of the connecting groove 604. When the guide seat 6 coincides with the guide groove 603, the guide seat 6 slides along the guide groove 603 under the push of the contact seat 7, and the forming seat 5 can be taken out.

[0086] At this time, when the designated forming seat 5 is inserted into the interior of the fixed seat 501 through the multiple guide seats 6, the guide seat 6 contacts and squeezes the contact seat 7, causing the contact seat 7 to slide and compress the multiple springs 701. At this time, the forming seat 5 is rotated, so that the forming seat 5 drives the guide seat 6 to rotate inside the connecting groove 604, so that the plug-in column 602 on the outer surface of the forming seat 5 corresponds to the plug-in groove 605;

[0087] At this time, the forming seat 5 is released, and the guide seat 6 is pushed by the contact seat 7 to fit the inner wall of the fixing seat 501. At this time, the sleeve 502 is sleeved on the outer surface of the forming seat 5, and the sleeve 502 is threadedly connected to the fixing seat 501. At this time, the sleeve 502 slides downward along the outer surface of the fixing seat 501, so that the sleeve 502 squeezes the connecting seat 601;

[0088] At this time, under the action of the connecting seat 601 and the contact seat 7, the position of the forming seat 5 is fixed, thereby completing the replacement of the forming seat 5. Then, by pouring the raw materials into the upper forming plate 1 and the lower forming plate 101, different small iron rods are formed inside the forming seat 5. Under the action of the small iron rods, the thick and large parts in contact with them are chilled, so that the thick and large parts can be densely organized, avoiding shrinkage defects.

[0089] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0090] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for solving the shrinkage and leakage problem of valve body castings, comprising: An upper forming plate (1), wherein a lower forming plate (101) is provided directly below the upper forming plate (1); A plurality of upper forming grooves (2), wherein the upper forming grooves (2) are arranged on the upper forming plate (1); A main groove (4), the main groove (4) being formed on the inner wall of the upper forming plate (1); The invention is characterized in that: a connecting assembly is provided between the upper forming plate (1) and the lower forming plate (101), the connecting assembly comprising a plurality of fixing bolts (3), two main positioning blocks (301) and a plurality of secondary positioning blocks (302), the two main positioning blocks (301) and the plurality of secondary positioning blocks (302) being connected to the upper forming plate (1); A plurality of the upper forming grooves (2) and the lower forming plates (101) are each provided with a replacement assembly, the replacement assembly comprising a forming seat (5), a fixing seat (501), and a plurality of guide seats (6), the fixing seat (501) being connected to the corresponding upper forming groove (2) or lower forming plate (101), and the forming seat (5) being plugged into the inner wall of the fixing seat (501); The lower surface of the lower forming plate (101) is connected to a lower riser (203); a plurality of lower forming grooves (201) are provided on the inner wall of the lower forming plate (101); the plurality of lower forming grooves (201) correspond to the plurality of upper forming grooves (2); a feed port (202) is provided at the center of the upper forming plate (1); a main groove (4) is provided on the inner wall of the upper forming plate (1); the main groove (4) is communicated with the feed port (202); Two branch grooves (401) are provided on the inner wall of the upper forming plate (1), the main groove (4) is connected to the two branch grooves (401), a plurality of liquid inlet grooves (402) are provided on the outer surface of the branch groove (401), an upper riser (403) is provided on the branch groove (401), and the upper riser (403) is connected to the upper surface of the upper forming plate (1); A plurality of material storage grooves (404) are provided on the inner wall of the upper riser (403), the material storage grooves (404) corresponding to the connection points of the liquid inlet grooves (402), and the liquid inlet grooves (402) are connected to the corresponding upper forming grooves (2); A plurality of positioning seats (503) are provided on the upper forming groove (2) and the lower forming plate (101), the positioning seats (503) are fitted with the corresponding forming seats (5), the positioning seats (503) are located inside the fixing seat (501), a contact seat (7) is slidably connected between the positioning seat (503) and the fixing seat (501), a plurality of springs (701) are provided on the lower surface of the contact seat (7), and the other end of the spring (701) is connected to the corresponding upper forming groove (2) or the lower forming plate (101); The upper surface of the contact seat (7) is in contact with the forming seat (5) and the plurality of guide seats (6), the plurality of guide seats (6) are connected to the outer surface of the forming seat (5), a connecting groove (604) is provided inside the fixing seat (501), the guide seat (6) is slidably connected to the inner wall of the connecting groove (604), and a plurality of guide grooves (603) and plug-in grooves (605) are provided on the inner wall of the fixing seat (501); A plug-in column (602) is plugged into the inner wall of the plug-in slot (605), and the upper surfaces of the plurality of plug-in columns (602) are connected to a connecting seat (601), and the connecting seat (601) is connected to the outer surface of the forming seat (5). A sleeve (502) is attached to the upper surface of the connecting seat (601), and the sleeve (502) is threadedly connected to the outer surface of the fixing seat (501).

2. The device for solving the shrinkage and leakage problem of valve body castings according to claim 1, characterized in that: A positioning groove (303) is provided on the lower forming plate (101), and the positioning groove (303) is fitted with two main positioning blocks (301) and a plurality of secondary positioning blocks (302). The plurality of fixing bolts (3) are connected to the corresponding main positioning blocks (301) and secondary positioning blocks (302).

3. A method for solving the shrinkage and leakage problem of valve body castings, based on the device for solving the shrinkage and leakage problem of valve body castings according to claim 2, characterized in that: The following steps are involved: S1: by inserting two main positioning blocks (301) and a plurality of secondary positioning blocks (302) into the inner wall of the positioning groove (303), the upper forming plate (1) and the lower forming plate (101) are aligned and fitted, and the upper forming plate (1) and the lower forming plate (101) are fixedly connected by bolts; S2: The raw material is poured into the upper molding plate (1) and the lower molding plate (101) through the feeding port (202), and flows into the two branch grooves (401) along the main groove (4), and simultaneously enters the plurality of upper molding grooves (2) and lower molding grooves (201) along the liquid inlet grooves (402) on the outer surfaces of the two branch grooves (401), and is shaped in the upper molding grooves (2) and the lower molding grooves (201); S3: At the same time, the raw material enters the forming seat (5) through the upper forming groove (2) and the lower forming groove (201), and forms a small iron rod in the forming seat (5). The small iron rod is then rapidly cooled and solidified, which has a chilling effect on the thick and large parts in contact with it, thereby increasing the cooling rate of the thick and large parts, making the thick and large parts dense, avoiding shrinkage defects in the valve formed in the upper forming groove (2) and the lower forming groove (201), and solving the problem of pressure leakage in the central drilling part of the valve; S4: When the forming seat (5) needs to be replaced, the sleeve (502) is rotated to separate the sleeve (502) from the fixing seat (501). At this time, the sleeve (502) can be taken out from the forming seat (5). Under the rebound of the spring (701), the contact seat (7) moves in the reverse direction, pushing the forming seat (5) to move in the reverse direction, driving the plug-in column (602) to separate from the plug-in slot (605); S5: Rotate the forming seat (5) so that the plurality of guide seats (6) rotate. When the guide seat (6) coincides with the guide groove (603), the guide seat (6) slides along the guide groove (603) under the push of the contact seat (7). The forming seat (5) can be taken out. When the designated forming seat (5) is inserted into the interior of the fixed seat (501), the guide seat (6) contacts and squeezes the contact seat (7). The forming seat (5) is rotated so that the plug-in column (602) on the outer surface of the forming seat (5) corresponds to the plug-in groove (605). S6: Loosen the forming seat (5), and under the push of the contact seat (7), the guide seat (6) is fitted with the inner wall of the fixed seat (501), and the sleeve (502) is sleeved on the outer surface of the forming seat (5), and the sleeve (502) is threadedly connected to the fixed seat (501). At this time, the sleeve (502) slides downward along the outer surface of the fixed seat (501), so that the sleeve (502) squeezes the connecting seat (601); S7: Under the action of the connecting seat (601) and the contact seat (7), the position of the forming seat (5) is fixed, thereby completing the replacement of the forming seat (5). Then, by pouring the raw material into the upper forming plate (1) and the lower forming plate (101), different small iron rods are formed inside the forming seat (5). Under the action of the small iron rods, the thick and large parts in contact with them are cooled, so that the thick and large parts can be densely organized and shrinkage defects are avoided.

Images