Valve casting production apparatus and method of use thereof

Abstract

The application relates to the technical field of valve casting, in particular to a valve casting production equipment and a using method thereof, which comprises a knock-out machine, a vibrating hopper is arranged in the knock-out machine, a feeding hopper is fixedly connected to the top of the knock-out machine, pretreatment assemblies for separating the casting mold are arranged on the front and back sides of the feeding hopper, rotating doors are arranged on the side surfaces of the pretreatment assemblies, and extruding devices and supporting assemblies are fixedly connected to the side surfaces of the feeding hopper; in the application, the back-and-forth movement of the separating plates drives the split columns on the surface to move, so that the sand mold is punctured and split, the sand mold is guaranteed to fall to the surface of the vibrating hopper, the vibrating hopper is guaranteed to speed up the separation of the casting and the original sand, the long vibrating hopper is not needed, the space required by the equipment is greatly shortened, and when the sand mold of different sizes is punctured, the limiting pins are connected with the rotating sleeves and the threaded holes outside the connecting sleeves, the lengths are controlled, and the sand mold of different sizes is conveniently punctured.

Description

Technical Field

[0001] This invention relates to the field of valve casting technology, specifically to a valve casting production equipment and its usage method. Background Technology

[0002] Sand casting is a casting method that uses sand as the primary molding material to prepare the mold. It is the most traditional casting method, and due to its inherent characteristics (not limited by the shape, size, complexity, or alloy type of the part; short production cycle; and low cost), it remains the most widely used casting method, especially for single-piece or small-batch castings such as valves. In the casting process, sand removal is an essential step. A typical inertial vibratory sand removal machine transports cooled sand blocks and sand boxes containing the casting to the machine, which vibrates under the drive of a vibrating motor to separate the sand blocks from the casting. However, this setup has the following problems in actual use: when the mold first falls onto the vibrating hopper, the original sand is not easily broken by the binder, requiring a certain amount of vibration for the sand to separate from the casting. This setup results in a long separation time between the casting and the sand, and requires a vibrating hopper of a certain length to ensure proper separation. Therefore, this paper proposes a valve casting production equipment and its usage method to address these issues. Summary of the Invention

[0003] The purpose of this invention is to provide a valve casting production equipment and its usage method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] As an optional solution to the valve casting production equipment and its usage method described in this invention, the valve casting production equipment and its usage method include a sand removal machine, a vibrating bucket installed inside the sand removal machine, a feeding hopper fixedly connected to the top of the sand removal machine, pre-treatment components for separating the casting mold installed on both the front and rear sides of the feeding hopper, a rotating door installed on the side of the pre-treatment components, and an extrusion device for extruding the casting mold and a support component for supporting the casting mold fixedly connected to the side of the feeding hopper.

[0006] As an optional embodiment of the valve casting production equipment and its usage method described in this invention, the pretreatment component includes a fixed frame, a first motor, and a rotating handle. The outer side of the fixed frame is fixedly connected to the hopper. The first motor is installed inside the fixed frame. An active disc is fixedly connected to the end of the main shaft of the first motor. A limit post is fixedly connected to the outer side of the active disc. A rotating sleeve is rotatably connected to the outer side of the limit post. Threaded rods are fixedly connected to both sides of the rotating handle. The other end of the threaded rod on one side is helically connected to the rotating sleeve. The other end of the threaded rod on the other side is helically connected to a connecting sleeve. The other end of the connecting sleeve is rotatably connected to a rotating frame. A separation plate is fixedly connected to the outer side of the rotating frame. The outer side of the separation plate is fixedly connected to the fixed frame.

[0007] As an optional embodiment of the valve casting production equipment and its usage method described in this invention, the threads on the outer sides of the threaded rods on both sides are arranged in opposite directions.

[0008] As an optional solution for the valve casting production equipment and its usage method described in this invention, the outer side of the rotating sleeve and the outer side of the connecting sleeve are both provided with threaded holes, and the inner side of the threaded holes is provided with a limiting pin.

[0009] As an optional solution of the valve casting production equipment and its usage method described in this invention, the first motor is provided with guide columns on both the upper and lower sides. One end of the guide column is fixedly connected to the fixed frame, and the other end of the guide column is slidably connected to a guide cylinder. The other end of the guide cylinder is fixedly connected to a separation plate, and the other end of the separation plate is fixedly connected to uniformly distributed split columns.

[0010] As an optional embodiment of the valve casting production equipment and its usage method described in this invention, the extrusion device includes a connecting frame, a first hydraulic rod, and an extrusion plate. The outer side of the connecting frame is fixedly connected to the hopper. The first hydraulic rod, arranged horizontally, is fixedly connected inside the connecting frame. The other end of the first hydraulic rod is fixedly connected to the extrusion plate. The extrusion plate is fixedly connected inside the extrusion plate. A sliding plate is fixedly connected to the bottom of the second hydraulic rod. A uniformly distributed buffer assembly is fixedly connected to the bottom of the sliding plate. Furthermore, uniformly distributed extrusion columns are fixedly connected to the outer periphery of the bottom of the sliding plate.

[0011] As an optional embodiment of the valve casting production equipment and its usage method described in this invention, the buffer assembly includes a hollow frame and a spring. The top of the hollow frame is fixedly connected to a sliding plate. A buffer column is slidably connected inside the hollow frame. A spring is fixedly connected to the top of the buffer column. The top of the spring is fixedly connected to the hollow frame.

[0012] As an optional solution of the valve casting production equipment and its usage method described in this invention, the support assembly includes a placement frame, a second motor and a threaded shaft. The outer side of the placement frame is fixedly connected to the hopper. The second motor is fixedly connected inside the placement frame. The end of the main shaft of the second motor is fixedly connected to the threaded shaft. A threaded sleeve is spirally connected to the outer side of the threaded shaft. The other end of the threaded sleeve is fixedly connected to a support plate. The outer side of the support plate is slidably connected to the placement frame.

[0013] As an optional solution of the valve casting production equipment and its usage method described in this invention, the support plate has uniformly distributed limiting holes that penetrate the upper and lower end faces of the support plate, and the placement frame has a material feeding groove at the bottom.

[0014] As an optional solution to the valve casting production equipment and its usage method described in this invention, the usage steps are as follows:

[0015] Step 1: First, ensure the sand mold has cooled completely, then place the cooled sand mold inside the hopper;

[0016] Step 2: Before placing the sand mold, activate the support assembly. At this time, the support assembly extends outward to support the mold.

[0017] Step 3: After the sand mold is supported, the extrusion device is started. At this time, the extrusion device is used to extrude the sand mold to accelerate its crushing and separation.

[0018] Step 4: Using the pre-processing components on both sides, the front and rear sides of the sand mold are squeezed to ensure that the sand mold splits, ensuring that the internal castings separate from the sand mold module when the sand mold vibrates.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] In this invention, a feeding hopper is installed on the top of the sand removal machine, and a pre-treatment component is set on the outside of the feeding hopper. The first motor drives the active disc to rotate, which in turn drives the limiting column to rotate, thereby driving the separation plate to move back and forth. The splitting column on the surface of the separation plate can pierce the sand mold, causing it to split and ensuring that it falls onto the surface of the vibrating hopper. This ensures that the vibrating hopper accelerates the separation of the casting from the original sand. When crushing castings of different sizes, the screw rod is driven to rotate by manually rotating the rotating handle. It is connected to the rotating sleeve and connecting sleeve by the limiting pin to control the length, which is convenient for piercing castings of different sizes. Moreover, this setting does not require a long vibrating hopper, which greatly reduces the space required for the equipment.

[0021] With the extrusion device and support assembly in place, the support plate inside the support assembly extends when the mold is placed, which facilitates the support of the mold. The extrusion device above is activated, the extrusion plate extends, and the buffer assembly and extrusion column can extrude the raw sand on the outside of the casting, which breaks the raw sand and achieves pretreatment of the mold, which speeds up the subsequent separation of the casting. The limiting holes on the surface of the support plate are used to ensure that the raw sand falls to the bottom. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the preprocessing component of the present invention;

[0024] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at point A;

[0025] Figure 4 This is a schematic diagram of the extrusion device of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the buffer component of the present invention.

[0027] In the diagram: 1. Sand removal machine; 2. Feed hopper; 3. Vibrating bucket; 4. Pretreatment assembly; 401. Fixed frame; 402. First motor; 403. Drive disc; 404. Limiting pin; 405. Rotating sleeve; 406. Rotating handle; 407. Threaded rod; 408. Connecting sleeve; 409. Limiting pin; 410. Rotating frame; 411. Separating plate; 412. Splitting column; 413. Guide column; 414. Guide cylinder; 5. Extrusion device; 501 502. Connecting frame; 503. First hydraulic rod; 504. Extrusion plate; 505. Second hydraulic rod; 506. Sliding plate; 507. Buffer assembly; 5061. Hollow frame; 5062. Spring; 5063. Buffer column; 507. Extrusion column; 6. Support assembly; 601. Placement frame; 602. Second motor; 603. Threaded shaft; 604. Threaded sleeve; 605. Support plate; 606. Limiting hole; 607. Discharge chute; 7. Rotating door. Detailed Implementation

[0028] Example 1:

[0029] Please see Figure 1 The present invention provides a technical solution:

[0030] A valve casting production equipment and its usage method include a sand removal machine 1, a vibrating bucket 3 installed inside the sand removal machine 1, a feeding hopper 2 fixedly connected to the top of the sand removal machine 1, pretreatment components 4 for separating the casting mold installed on both the front and rear sides of the feeding hopper 2, a rotating door 7 installed on the side of the pretreatment component 4, and after the rotating door 7 is opened, it is convenient for a hand to reach into the pretreatment component 4 to adjust the movement range of the separation plate 411. An extrusion device 5 for extruding the casting mold and a support component 6 for supporting the casting mold are fixedly connected to the side of the feeding hopper 2.

[0031] The usage steps are as follows:

[0032] Step 1: First, ensure that the sand mold has cooled completely, then place the cooled sand mold inside the feeding hopper 2;

[0033] Step 2: Before placing the sand mold, start the support component 6. At this time, the support component 6 extends outward to support the mold.

[0034] Step 3: After the sand mold is supported, the extrusion device 5 is started. At this time, the extrusion device 5 is used to extrude the sand mold to accelerate its crushing and separation.

[0035] Step 4: Through the pre-treatment components 4 on both sides, the front and rear sides of the sand mold are squeezed to ensure that the sand mold splits and that the internal castings separate from the sand mold module when the sand mold vibrates.

[0036] When in use, the power is turned on. When the sand mold is being removed from the sand mold, the sand mold is placed inside the feeding hopper 2 and supported by the support component 6. The upper extrusion device 5 and the pre-treatment components 4 on both sides are activated. At this time, the sand mold can be completely destroyed. Then the support component 6 is reset, and the sand mold falls above the vibrating hopper 3. The sand removal machine 1 can then remove the sand from the sand mold. This setting speeds up the sand removal efficiency of the sand mold, and the casting is separated from the sand more quickly. At the same time, there is no need to set up a long vibrating hopper 3, which reduces the space occupied by it.

[0037] Example 2

[0038] This embodiment is an improvement made to Implementation 1. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3Specifically, the pretreatment component 4 includes a fixed frame 401, a first motor 402, and a rotating handle 406. The fixed frame 401 is fixedly connected to the hopper 2 on the outside. The first motor 402 is installed inside the fixed frame 401. An active disc 403 is fixedly connected to the end of the main shaft of the first motor 402. A limit post 404 is fixedly connected to the outside of the active disc 403. A rotating sleeve 405 is rotatably connected to the outside of the limit post 404. Threaded rods 407 are fixedly connected to both sides of the rotating handle 406. The other end of the threaded rod 407 on one side is screwed to the rotating sleeve 405. The other end of the threaded rod 407 on the other side is screwed to a connecting sleeve 408. A rotating frame 410 is rotatably connected to the other end of the connecting sleeve 408. A separation plate 411 is fixedly connected to the outside of the rotating frame 410. The outside of the separation plate 411 is fixedly connected to the fixed frame 401.

[0039] The threads on the outer sides of the aforementioned threaded rods 407 on both sides are arranged in opposite directions. This arrangement ensures that the threaded rods 407 rotate synchronously when the handle 406 is rotated, thereby adjusting the distance between the separation plate 411 and the limiting post 404.

[0040] The outer side of the rotating sleeve 405 and the outer side of the connecting sleeve 408 are both provided with threaded holes, and a limiting pin 409 is provided on the inner side of the threaded hole. The limiting pin 409 is used to fix the threaded rod 407 and the rotating sleeve 405, the threaded rod 407 and the connecting sleeve 408.

[0041] The first motor 402 is provided with guide posts 413 on both the upper and lower sides. One end of the guide post 413 is fixedly connected to the fixed frame 401, and the other end of the guide post 413 is slidably connected to the guide cylinder 414. The arrangement of the guide post 413 and the guide cylinder 414 ensures that the separation plate 411 slides back and forth stably. The other end of the guide cylinder 414 is fixedly connected to the separation plate 411, and the other end of the separation plate 411 is fixedly connected to the evenly distributed splitting posts 412. The splitting posts 412 are inserted into the sand mold to destroy its integrity, ensuring the rapid sand dropping action of the subsequent device.

[0042] When performing the sand removal operation on the sand mold, the first motors 402 on both sides are started. The first motors 402 drive the drive disc 403 to rotate, and under the action of the limit post 404, they drive the rotating sleeve 405 to move. The rotating sleeve 405 drives the threaded rod 407, the rotating handle 406, the connecting sleeve 408, and the rotating frame 410 to move. At this time, the separating plate 411 can drive the splitting column 412 to squeeze the sand mold back and forth. At this time, the integrity of the sand mold is destroyed, which facilitates the subsequent complete sand removal operation. At the same time, the threaded rod 407 can be rotated under the action of the rotating handle 406, thereby adjusting the distance between the limit post 404 and the separating plate 411, and thus controlling the movement range of the separating plate 411. This allows for pre-treatment of sand molds of different sizes.

[0043] Example 3

[0044] This embodiment is an improvement upon the two implementation examples. Please refer to [link / reference]. Figure 1 , Figure 4 and Figure 5 Specifically, the extrusion device 5 includes a connecting frame 501, a first hydraulic rod 502, and an extrusion plate 503. The outer side of the connecting frame 501 is fixedly connected to the hopper 2. The first hydraulic rod 502, which is arranged horizontally, is fixedly connected inside the connecting frame 501. The other end of the first hydraulic rod 502 is fixedly connected to the extrusion plate 503. The extrusion plate 503 is fixedly connected inside the extrusion plate 503. The bottom of the second hydraulic rod 504 is fixedly connected to a sliding plate 505. The bottom of the sliding plate 505 is fixedly connected to a uniformly distributed buffer assembly 506, and the outer periphery of the bottom of the sliding plate 505 is fixedly connected to a uniformly distributed extrusion column 507.

[0045] The aforementioned buffer assembly 506 includes a hollow frame 5061 and a spring 5062. The top of the hollow frame 5061 is fixedly connected to the sliding plate 505. A buffer column 5063 is slidably connected inside the hollow frame 5061. The top of the buffer column 5063 is fixedly connected to the spring 5062. The top of the spring 5062 is fixedly connected to the hollow frame 5061. This arrangement ensures that when the buffer column 5063 comes into contact with the casting inside the mold, it avoids directly squeezing the casting and causing damage, thus protecting the casting to a certain extent. Meanwhile, the original sand outside the mold can be broken through the extrusion column 507 to facilitate the subsequent sand removal action.

[0046] The aforementioned support assembly 6 includes a placement frame 601, a second motor 602, and a threaded shaft 603. The outer side of the placement frame 601 is fixedly connected to the hopper 2. The second motor 602 is fixedly connected inside the placement frame 601. The threaded shaft 603 is fixedly connected to the end of the main shaft of the second motor 602. A threaded sleeve 604 is spirally connected to the outer side of the threaded shaft 603. The other end of the threaded sleeve 604 is fixedly connected to a support plate 605. The outer side of the support plate 605 is slidably connected to the placement frame 601.

[0047] The support plate 605 has evenly distributed limiting holes 606 that penetrate the upper and lower surfaces of the support plate 605. The bottom of the placement frame 601 has a feeding groove 607. The feeding groove 607 is used to ensure that the original sand falls through the feeding groove 607 after the support plate 605 is reset.

[0048] When the sand mold is being removed from the sand mold, the second motor 602 inside the placement frame 601 drives the threaded shaft 603 to rotate, which in turn moves the threaded sleeve 604. The threaded sleeve 604 drives the support plate 605 to contact the discharge hopper 2, which is used to support the sand mold. At the same time, the limiting hole 606 is set to ensure that the residual raw sand falls into the vibrating hopper 3 below. When the support plate 605 is reset, the raw sand inside the limiting hole 606 can fall through the discharge groove 607. At the same time, the first hydraulic rod 502 above pushes out the extrusion plate 503, and the second hydraulic rod 504 inside the extrusion plate 503 drives the sliding plate 505 to move downward. The sliding plate 505 drives the buffer assembly 506 and the extrusion column 507 to contact the sand mold, which also serves to break the integrity of the sand mold and facilitates the rapid removal of sand from the sand mold in the future.

[0049] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A valve foundry production plant comprising a knock-out machine (1), characterized in that: The sand drop machine (1) is internally provided with a vibrating hopper (3), the top of the sand drop machine (1) is fixedly connected with a lower hopper (2), the front and rear sides of the lower hopper (2) are both provided with a pretreatment assembly (4) for separating the casting mold, the side of the pretreatment assembly (4) is provided with a rotating door (7), the side of the lower hopper (2) is fixedly connected with an extrusion device (5) for extruding the casting mold and a supporting assembly (6) for supporting the casting mold; the pretreatment assembly (4) comprises a fixed frame (401), a first motor (402) and a rotating handle (406), the outer side of the fixed frame (401) is fixedly connected with the lower hopper (2), the first motor (402) is internally mounted in the fixed frame (401), the main shaft of the first motor (402) is fixedly connected with a driving disc (403), the outer side of the driving disc (403) is fixedly connected with a limiting column (404), the outer side of the limiting column (404) is rotatably connected with a rotating sleeve (405), the rotating handle (406) is fixedly connected with threaded rods (407) on both sides, the other end of the threaded rod (407) on one side is screw-connected with the rotating sleeve (405), the other end of the threaded rod (407) on the other side is screw-connected with a connecting sleeve (408), the other end of the connecting sleeve (408) is rotatably connected with a rotating frame (410), the outer side of the rotating frame (410) is fixedly connected with a separating plate (411), the outer side of the separating plate (411) is fixedly connected with the fixed frame (401); the upper and lower sides of the first motor (402) are both provided with guide columns (413), one end of the guide column (413) is fixedly connected with the fixed frame (401), the other end of the guide column (413) is slidingly connected with a guide cylinder (414), the other end of the guide cylinder (414) is fixedly connected with the separating plate (411), the other end of the separating plate (411) is fixedly connected with uniformly distributed split columns (412).

2. A valve foundry production apparatus according to claim 1, characterized in that: The threads on the outer sides of the threaded rods (407) on both sides are oppositely arranged.

3. A valve foundry production apparatus according to claim 2, characterized in that: Threaded holes are formed in the outer sides of the rotating sleeve (405) and the connecting sleeve (408), and limiting pins (409) are arranged in the inner sides of the threaded holes.

4. A valve foundry production apparatus according to claim 1, characterized by: The extrusion device (5) comprises a connecting frame (501), a first hydraulic rod (502) and an extrusion plate (503), the outer side of the connecting frame (501) is fixedly connected with the lower hopper (2), the first hydraulic rod (502) is fixedly connected in the connecting frame (501) and arranged transversely, the other end of the first hydraulic rod (502) is fixedly connected with the extrusion plate (503), the extrusion plate (503) is fixedly connected with a second hydraulic rod (504) internally, the bottom of the second hydraulic rod (504) is fixedly connected with a sliding plate (505), the bottom of the sliding plate (505) is fixedly connected with uniformly distributed buffer assemblies (506), and the bottom of the sliding plate (505) is peripherally fixedly connected with uniformly distributed extrusion columns (507).

5. A valve casting production apparatus according to claim 4, wherein: The buffer assembly (506) comprises a hollow frame (5061) and a spring (5062), the top of the hollow frame (5061) is fixedly connected with the sliding plate (505), the inside of the hollow frame (5061) is slidably connected with a buffer column (5063), the top of the buffer column (5063) is fixedly connected with the spring (5062), and the top of the spring (5062) is fixedly connected with the hollow frame (5061).

6. A valve casting production apparatus according to claim 1, wherein: The support assembly (6) comprises a placing frame (601), a second motor (602) and a threaded shaft (603), the outer side of the placing frame (601) is fixedly connected with the lower hopper (2), the inside of the placing frame (601) is fixedly connected with the second motor (602), the tail end of the main shaft of the second motor (602) is fixedly connected with the threaded shaft (603), the outer side of the threaded shaft (603) is spirally connected with a threaded sleeve (604), the other end of the threaded sleeve (604) is fixedly connected with a support plate (605), and the outer side of the support plate (605) is slidably connected with the placing frame (601).

7. A valve foundry production apparatus according to claim 6, characterized in that: The inside of the support plate (605) is provided with uniformly distributed limiting holes (606) penetrating through the upper and lower end faces of the support plate (605), and the bottom of the placing frame (601) is provided with a discharging chute (607).

8. The method of using a valve foundry production apparatus of claim 1, wherein: The use steps are as follows: Step one: firstly determine that the sand mold cooling is completed, and place the cooled sand mold in the lower hopper (2); Step two: before putting the sand mold, the support assembly (6) is started, at this time the support assembly (6) extends outward, and at this time the support assembly (6) is used for supporting the mold piece; Step three: after the sand mold is supported, the extrusion device (5) is started, at this time the extrusion device (5) is used for extruding the sand mold to accelerate the crushing and separation; Step four: the pretreatment assembly (4) on both sides is used at this time to extrude the front and back sides of the sand mold, so that the sand mold is split, and the internal casting and the sand mold module are separated when the sand mold is vibrated in the future.

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