An air frame for a lost foam mold

Abstract

This application relates to an air frame for a lost foam mold, belonging to the technical field of molds. It includes a frame body, a first adjustment component, and a second adjustment component. The interior of the frame body is hollow, and air inlet holes and exhaust holes are respectively opened at both ends. A plurality of groups of the first adjustment components are provided, and the plurality of groups of the first adjustment components are arranged in a circle along the circumferential direction of the frame body. The first adjustment components are arranged inside the frame body and are used to reduce the flow rate of the steam airflow. A plurality of groups of the second adjustment components are provided, and the plurality of groups of the first adjustment components correspond to the plurality of groups of the second adjustment components one by one. The second adjustment components are arranged on the first adjustment components and are used to increase the flow rate of the steam airflow. This application has the effect of reducing steam loss.

Description

Technical Field

[0001] This application relates to the technical field of molds, and particularly to an air frame for a lost foam mold. Background Art

[0002] Lost foam is a casting method in which a foam plastic is made into a full-scale mold that is exactly the same as the structure and size of the part. After being dipped in a refractory bonding coating and dried, it is subjected to dry sand molding, vibration compaction, and then molten metal is poured in to make the mold disappear by heat gasification, thereby obtaining a metal part with the same shape as the mold.

[0003] Currently, in general molds, the upper mold pushes the middle air frame towards the lower mold, and the clamping plate clamps the first push plate and the second push plate on the middle air frame to prevent the first push plate and the second push plate from retreating or the mold from leaking air, thereby improving the forming accuracy.

[0004] However, in actual production, there is a situation where a large air frame is used for a small mold, resulting in steam waste and low productivity. Summary of the Invention

[0005] In order to reduce steam loss, this application provides an air frame for a lost foam mold.

[0006] An air frame for a lost foam mold provided by this application adopts the following technical solutions:

[0007] An air frame for a lost foam mold includes:

[0008] A frame body, which is hollow inside and has an air inlet hole and an exhaust hole respectively at both ends;

[0009] A first adjustment component, multiple groups of which are provided, and the multiple groups of the first adjustment components are arranged in a circle along the circumferential direction of the frame body. The first adjustment component is arranged inside the frame body and is used to reduce the flow rate of the steam airflow;

[0010] A second adjustment component, multiple groups of which are provided, and the multiple groups of the first adjustment components correspond to the multiple groups of the second adjustment components one by one. The second adjustment component is arranged on the first adjustment component and is used to increase the flow rate of the steam airflow.

[0011] By adopting the above technical solutions, steam enters the frame body through the air inlet hole. When casting a small mold, the first adjustment component reduces the flow rate of the steam airflow. When casting a large mold, the second adjustment component increases the flow rate of the steam airflow;

[0012] Through the cooperation of the first adjustment component and the second adjustment component, the flow rate of the steam airflow can be flexibly adjusted and controlled. By precisely controlling the steam flow rate, the production efficiency is improved, and the energy consumption is further reduced.

[0013] Optionally, a universal pipe is arranged inside the frame body. The axis of the universal pipe is arranged in the same way as the axis of the frame body. A hollow structure is formed between the inner wall of the frame body and the universal pipe, and a heat-insulating material is filled in the hollow structure. Air inlet holes and exhaust holes are also formed at positions of the universal pipe corresponding to the frame body.

[0014] By adopting the above technical solution, during the steam cycle, by arranging the heat-insulating material, heat loss can be reduced, so as to keep the temperature of the steam inside the frame body stable, and further improve the production efficiency.

[0015] Optionally, the first adjusting assembly includes:

[0016] A drainage pipe which is located inside the frame body and fixedly connected to the universal pipe. The drainage pipe and the universal pipe are in a "cross" shape.

[0017] An adjusting part which is arranged inside the drainage pipe and is used for reducing the flow rate of the steam air flow.

[0018] A collecting part which is arranged inside the drainage pipe and is used for condensing and collecting the redundant steam.

[0019] By adopting the above technical solution, the steam enters the universal pipe through the air inlet hole. When casting a small mold, the adjusting part reduces the flow rate of the steam air flow in the universal pipe and forces the redundant steam into the drainage pipe. The collecting part condenses the redundant steam and collects and recycles the condensed steam, thereby improving the accuracy of steam flow control and further improving the energy utilization efficiency.

[0020] Optionally, the adjusting part includes:

[0021] Two sliding plates which are symmetrically arranged along the axis direction of the universal pipe. The sliding plates are slidably connected inside the drainage pipe, and the sliding direction is the axis direction of the drainage pipe.

[0022] Two first baffles which are symmetrically arranged along the axis direction of the universal pipe. The first baffles are fixedly connected to the sliding plates.

[0023] Two second baffles which are symmetrically arranged along the axis direction of the universal pipe. The second baffles are fixedly connected to the inner wall of the drainage pipe and are located on one side of the sliding plates close to the first baffles.

[0024] Springs, two springs are provided, and the two springs correspond to the two first baffles one by one. The springs are located between the first baffle and the second baffle, and both ends are fixedly connected to the first baffle and the second baffle respectively;

[0025] In the initial state, the springs cause the sides of the two sliding plates close to each other to abut tightly against each other.

[0026] By adopting the above technical solution, when steam enters the general pipe and flows, the steam squeezes the abutting position of the sliding plate, and the steam exerts a thrust on the side of the sliding plate. Under the action of the thrust, the sliding plate drives the first baffle to move. The first baffle cooperates with the second baffle to squeeze the spring, and the spring deforms. Under the action of the spring elastic force, a gap is opened between the two sliding plates, allowing a small amount of steam to pass through, thereby facilitating the precise control and dynamic adjustment of the steam flow rate, and further improving the production efficiency and product quality.

[0027] Optionally, the collection part includes:

[0028] A limiting plate, which is arranged at one end of the drainage pipe;

[0029] A condensing pipe, which is fixedly connected to the end of the drainage pipe far from the limiting plate;

[0030] A collection box, which is fixedly connected to the outside of the frame body and is communicated with the end of the condensing pipe far from the limiting plate.

[0031] By adopting the above technical solution, when steam enters the general pipe and flows, under the limiting action of the two sliding plates, a large amount of steam flows along the sliding plates to both ends of the drainage pipe. Under the action of the limiting plate, the limiting plate guides the steam to flow towards one end of the condensing pipe. The steam enters the condensing pipe. Since the steam is cooled in the condensing pipe and the temperature drops, the steam condenses into liquid water, and the liquid water flows into the collection box, thereby improving the energy utilization efficiency and further reducing the production cost.

[0032] Optionally, the side where the two sliding plates abut is inclined towards the axis direction of the general pipe along the direction of approaching each other.

[0033] By adopting the above technical solution, the inclined design of the sliding plate can guide the steam to flow along the axis direction of the general pipe. Under the guiding action, it helps to ensure that the steam can concentrate and efficiently squeeze the abutting position of the sliding plate, thereby facilitating the reduction of energy loss and unnecessary pressure drop.

[0034] Optionally, the second adjustment component includes:

[0035] A connecting rod, which sequentially passes through the frame body and the drainage pipe and is located on the side of the limiting plate far from the condensing pipe;

[0036] A driving part, which is arranged on the connecting rod and is used to drive the moving part to move;

[0037] A moving part, which is arranged on the driving part and is used to drive the limiting plate to move.

[0038] By adopting the above technical solution, when casting a large mold, rotate the connecting rod, the connecting rod transmits power to the driving part, the driving part drives the moving part to drive the limiting plate to move, by reducing the volume inside the drainage pipe, with the steam flow rate unchanged, the flow rate per unit volume increases, the thrust exerted by the steam on the slide plate increases, the gap between the two slide plates increases, and the steam throughput increases, so as to achieve flexible adjustment and thus easily reduce steam loss.

[0039] Optionally, the driving part includes:

[0040] A first bevel gear, which is coaxially fixed to one end of the connecting rod and is located inside the drainage pipe;

[0041] A second bevel gear, which meshes with the first bevel gear and is rotatably connected to the drainage pipe;

[0042] A threaded sleeve, which is coaxially fixed to the second bevel gear and is located on the side of the second bevel gear close to the condenser pipe.

[0043] By adopting the above technical solution, rotate the connecting rod, the connecting rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the threaded sleeve to rotate, and the threaded sleeve converts the rotational motion into a linear motion, so that the moving part can easily drive the limiting plate to move, and thus it is easy to improve the efficiency.

[0044] Optionally, the moving part includes:

[0045] A threaded rod, which is threadedly connected to the threaded sleeve, and the end far from the threaded sleeve is fixed to the limiting plate;

[0046] A guide rod, the axis direction of which is parallel to the axis direction of the threaded rod. One end of the guide rod penetrates through the limiting plate, and the other end is fixed to the drainage pipe.

[0047] By adopting the above technical solution, the second bevel gear drives the threaded sleeve to rotate, the threaded sleeve drives the threaded rod to rotate, and under the action of the guide rod, the threaded rod drives the limiting plate to move. When the limiting plate moves, the cross-sectional area inside the drainage pipe is changed, so that it is easy to dynamically adjust the steam flow rate inside the drainage pipe, and thus it is easy to reduce steam loss.

[0048] Optionally, a screwing cap is fixedly provided at one end of the connecting rod located outside the housing.

[0049] By adopting the above technical solution, the screwing cap facilitates the adjustment of the position of the limiting plate by providing additional grip and fixing area, thereby improving the operation convenience.

[0050] In summary, the present application includes at least one of the following beneficial technical effects:

[0051] 1. By providing the drainage pipe, the adjustment part and the collection part, the accuracy of steam flow control is improved, thereby improving the energy utilization efficiency;

[0052] 2. By providing the connecting rod, the driving part and the moving part, flexible adjustment can be achieved, thereby facilitating the reduction of steam loss;

[0053] 3. By providing the screwing cap, the position of the limiting plate can be easily adjusted, thereby improving the operation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is a schematic structural view of an embodiment of the present application;

[0055] Figure 2 is a cross-sectional view of the first adjustment assembly in the embodiment of the present application;

[0056] Figure 3 is Figure 2 an enlarged view of part A in

[0057] Figure 4 is a cross-sectional view of the second adjustment assembly in the embodiment of the present application;

[0058] Figure 5 is Figure 4 an enlarged view of part B in

[0059] DESCRIPTION OF THE REFERENCE NUMERALS:

[0060] 1. Housing; 11. Air inlet hole; 12. Air outlet hole; 13. Universal pipe; 2. First adjustment assembly; 21. Drainage pipe; 22. Adjustment part; 221. Slide plate; 222. First baffle; 223. Second baffle; 224. Spring; 23. Collection part; 231. Limiting plate; 232. Condensing pipe; 233. Collection box; 2331. Water outlet pipe; 2332. Water stop valve; 3. Second adjustment assembly; 31. Connecting rod; 311. Screwing cap; 32. Driving part; 321. First bevel gear; 322. Second bevel gear; 323. Threaded sleeve; 33. Moving part; 331. Threaded rod; 332. Guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0061] The following is combined with the attached Figures 1-5Further details of this application will be described below.

[0062] An embodiment of this application discloses an air frame for a lost foam mold. Referring to Figure 1 and Figure 2 , an air frame for a lost foam mold includes a frame body 1, a first adjustment component 2, and a second adjustment component 3. The interior of the frame body 1 is hollow, and air inlet holes 11 and exhaust holes 12 are respectively provided at both ends. The first adjustment component 2 is arranged inside the frame body 1 and is used to reduce the flow rate of the steam airflow. The second adjustment component 3 is arranged on the first adjustment component 2 and is used to increase the flow rate of the steam airflow.

[0063] During use, steam is introduced into the air inlet hole 11 and enters the frame body 1 through the air inlet hole 11. When casting a small mold, the first adjustment component 2 reduces the flow rate of the steam airflow;

[0064] When casting a large mold, the second adjustment component 3 increases the flow rate of the steam airflow. By flexibly adjusting and controlling the flow rate of the steam airflow, steam loss is reduced, thereby improving production efficiency and further reducing energy consumption.

[0065] Referring to Figure 1 and Figure 2 , the frame body 1 is in the shape of a rectangular frame and is horizontally arranged. The interior of the frame body 1 is hollow, and a common pipe 13 is arranged inside. The common pipe 13 is in the shape of a circular tube, and the two ends of the common pipe 13 are connected end to end. The axis of the common pipe 13 is arranged in the same way as the axis of the frame body 1.

[0066] The space between the inner wall of the frame body 1 and the common pipe 13 is a hollow structure, and a heat-insulating material is filled in the hollow structure. In this embodiment, the heat-insulating material is preferably polystyrene material.

[0067] Both the frame body 1 and the common pipe 13 are provided with air inlet holes 11 and exhaust holes 12. The two air inlet holes 11 and the two exhaust holes 12 are all connected through connecting pipes. The air inlet holes 11 and the exhaust holes 12 are respectively located at both ends in the length direction of the frame body 1, and both the air inlet holes 11 and the exhaust holes 12 are located at the center.

[0068] Referring to Figure 1 and Figure 2 , there are two sets of the first adjustment component 2, and the two sets of the first adjustment component 2 are respectively arranged on both sides in the width direction of the frame body 1 and are symmetrically arranged. The first adjustment component 2 is located at one end of the frame body 1 in the length direction close to the air inlet hole 11.

[0069] The first adjustment component 2 includes a diversion pipe 21, an adjustment part 22, and a collection part 23. The diversion pipe 21 is located inside the frame body 1 and is fixedly connected to the common pipe 13. The diversion pipe 21 is horizontally arranged, and both ends are closed. The diversion pipe 21 and the common pipe 13 are in a "cross" shape.

[0070] Referring toFigure 2 and Figure 3 The adjusting part 22 includes a sliding plate 221, a first baffle 222, a second baffle 223 and a spring 224. There are two sliding plates 221, which are symmetrically arranged along the axis direction of the common pipe 13. The sliding plate 221 is in the shape of a rectangular plate and is vertically arranged. The sliding plate 221 is slidably connected to the drainage pipe 21, and the sliding direction is the axis direction of the drainage pipe 21.

[0071] Refer to Figures 1 to 3 , one side of the two sliding plates 221 in contact with each other is inclined towards the axis direction of the common pipe 13 in the direction of approaching each other, and the distance between the inclined ends of the two sliding plates 221 gradually decreases in the direction from the air inlet hole 11 towards the air outlet hole 12.

[0072] Refer to Figure 2 and Figure 3 , there are two first baffles 222, which are symmetrically arranged along the axis direction of the common pipe 13. The first baffle 222 is in the shape of a rectangular plate and is vertically arranged. The first baffle 222 is perpendicular to the sliding plate 221 and is fixedly connected to the sliding plate 221.

[0073] Refer to Figure 2 and Figure 3 , there are two second baffles 223, which are symmetrically arranged along the axis direction of the common pipe 13. The second baffle 223 is in the shape of a rectangular plate and is vertically arranged. The second baffle 223 is parallel to the first baffle 222. The second baffle 223 is fixedly connected to the inner wall of the drainage pipe 21 and is located on the side of the sliding plate 221 close to the first baffle 222.

[0074] Refer to Figure 2 and Figure 3 , there are two springs 224, which correspond to the two first baffles 222 one by one. The spring 224 is located between the first baffle 222 and the second baffle 223, and both ends are fixedly connected to the first baffle 222 and the second baffle 223 respectively. In the initial state, the spring 224 makes the sides of the two sliding plates 221 close to each other press tightly against each other.

[0075] Refer to Figure 2 , the collecting part 23 includes a limiting plate 231, a condensing pipe 232 and a collecting box 233. The limiting plate 231 is in the shape of a circular plate, and the outer periphery of the limiting plate 231 abuts against the inner periphery of the drainage pipe 21. The limiting plate 231 is located at one end of the drainage pipe 21 close to the horizontal axis of the frame body 1 and is on the side of the second baffle 223 away from the first baffle 222. The limiting plate 231 is slidably connected to the drainage pipe 21, and the sliding direction is the axis direction of the drainage pipe 21.

[0076] The condenser tube 232 is fixedly connected to one end of the drainage tube 21 away from the limiting plate 231. The inlet end of the condenser tube 232 is flared, and the flared direction is set towards the direction close to the limiting plate 231. The outer diameter of the flare is equal to the inner diameter of the drainage tube 21. The flared end of the condenser tube 232 is located on the side of the second baffle 223 away from the limiting plate 231 and close to the condenser tube 232.

[0077] The collection box 233 is fixedly connected to the outside of the frame body 1 and is communicated with the outlet end of the condenser tube 232. A water outlet pipe 2331 is communicated with the collection box 233, and a water stop valve 2332 is arranged on the water outlet pipe 2331.

[0078] During use, when casting a small mold, when the steam flows in the universal tube 13, the steam presses the abutting position of the sliding plate 221, and the steam exerts pressure on the inclined surface of the sliding plate 221. The sliding plate 221 drives the first baffle 222 to move, and the first baffle 222 presses the spring 224. Under the elastic force of the spring 224, a gap is opened between the two sliding plates 221, allowing a small amount of steam to pass through.

[0079] A large amount of steam flows along the sliding plate 221 towards both ends of the drainage tube 21. A large amount of steam flows along the sliding plate 221 towards both ends of the drainage tube 21. The limiting plate 231 guides the steam to flow towards one end of the condenser tube 232. The steam enters the condenser tube 232, and the steam condenses into liquid water. The liquid water flows into the collection box 233, thereby improving the energy utilization efficiency and reducing the production cost.

[0080] Refer to Figure 2 、 Figure 4 and Figure 5 As shown in

[0081] Refer to Figure 2 、 Figure 4 and Figure 5 As shown in

[0082] Refer to Figure 2 and Figure 5 As shown in

[0083] The threaded sleeve 323 is coaxially and fixedly connected to the second bevel gear 322 and is located on the side of the second bevel gear 322 close to the condensing pipe 232. The axial direction of the threaded sleeve 323 is parallel to the axial direction of the drainage pipe 21.

[0084] Referring to Figure 5 , the moving part 33 includes a threaded rod 331 and a guide rod 332. The threaded rod 331 is threadedly connected to the threaded sleeve 323, and the end away from the threaded sleeve 323 is fixedly connected to the limiting plate 231.

[0085] The axial direction of the guide rod 332 is parallel to the axial direction of the threaded rod 331. One end of the guide rod 332 passes through the limiting plate 231, and the other end is fixedly connected to the drainage pipe 21. The guide rod 332 is located on the side of the threaded rod 331 away from the sliding plate 221.

[0086] During use, when casting a large mold, the operator rotates the screw cap 311. The screw cap 311 drives the connecting rod 31 to rotate. The connecting rod 31 drives the first bevel gear 321 to rotate. The first bevel gear 321 drives the second bevel gear 322 to rotate. The second bevel gear 322 drives the threaded sleeve 323 to rotate. The threaded sleeve 323 drives the threaded rod 331 to rotate. Under the action of the guide rod 332, the threaded rod 331 drives the limiting plate 231 to move, so as to easily dynamically adjust the steam flow inside the drainage pipe 21, and further easily reduce the loss of steam.

[0087] The implementation principle of an air frame for a lost foam mold in an embodiment of the present application is as follows: Steam is introduced into the air inlet hole 11. When casting a small mold, the steam presses against the abutting position of the sliding plate 221, and a gap is opened between the two sliding plates 221, allowing a small amount of steam to pass through. At the same time, the limiting plate 231 guides a large amount of steam to flow towards one end of the condensing pipe 232. The steam enters the condensing pipe 232, and the steam condenses into liquid water. The liquid water flows into the collection box 233.

[0088] When casting a large mold, the screw cap 311 drives the connecting rod 31 to rotate. The connecting rod 31 drives the first bevel gear 321 to rotate. The first bevel gear 321 drives the second bevel gear 322 to rotate. The second bevel gear 322 drives the threaded sleeve 323 to rotate. The threaded sleeve 323 drives the threaded rod 331 to rotate. Under the action of the guide rod 332, the threaded rod 331 drives the limiting plate 231 to move, so as to easily dynamically adjust the steam flow inside the drainage pipe 21, and further easily reduce the loss of steam.

[0089] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An air frame for a lost foam mold, characterized in that: include: The frame is hollow inside, with an air inlet opening at one end and an air exhaust opening at the other end; The first adjustment component is provided with two groups, and the two groups of first adjustment components are respectively arranged on both sides of the width direction of the frame body and are symmetrically arranged. The first adjustment component is located at one end of the frame body close to the air inlet in the length direction of the frame body and is arranged in the frame body to reduce the flow rate of the steam airflow; The second regulating assembly is provided in multiple groups, the multiple groups of first regulating assemblies correspond to the multiple groups of second regulating assemblies one by one, the second regulating assemblies are provided on the first regulating assemblies, and are used to increase the flow rate of the steam airflow; A universal tube is arranged in the frame, the axis of the universal tube is arranged in the same direction as the axis of the frame, a hollow structure is formed between the inner wall of the frame and the universal tube, and a heat-insulating material is filled in the hollow structure, and an air inlet and an air outlet are also provided at positions corresponding to the universal tube and the frame; The first adjustment component includes: The drainage tube is located in the frame and is fixedly connected to the universal tube, and the drainage tube and the universal tube are in a "cross" shape; A regulating part, arranged in the drainage pipe, for reducing the flow rate of the steam airflow; A collecting part, arranged in the drainage pipe, for condensing and collecting excess steam; The regulation department includes: Two slide plates are provided, the two slide plates are symmetrically arranged along the axis direction of the universal tube, the slide plates are slidably connected in the drainage tube, and the sliding direction is the axis direction of the drainage tube; Two first baffles are provided, the two first baffles are symmetrically arranged along the axis direction of the universal tube, and the first baffles are fixedly connected to the slide plate; Two second baffles are provided, the two second baffles are symmetrically arranged along the axis direction of the universal tube, the second baffles are fixedly connected to the inner wall of the drainage tube, and are located on a side of the slide plate close to the first baffle; Two springs are provided, the two springs correspond to the two first baffles one by one, the spring is located between the first baffle and the second baffle, and the two ends of the spring are respectively fixedly connected to the first baffle and the second baffle; In the initial state, the spring makes the two slide plates close to each other. The collection department includes: A restriction plate is disposed on one end of the drainage tube; A condenser pipe is fixedly connected to an end of the drainage pipe away from the limiting plate; The collecting box is fixedly connected to the outer side of the frame and is in communication with the end of the condensing tube away from the limiting plate; The second adjustment component includes: The connecting rod is sequentially passed through the frame and the drainage pipe and is located on a side of the limiting plate away from the condensing pipe; A driving part, disposed on the connecting rod, and used for driving the moving part to move; The moving part is arranged on the driving part and is used for driving the limiting plate to move; The drive unit includes: Bevel gear 1 is coaxially fixed to one end of the connecting rod and is located in the drainage tube; Bevel gear 2 is meshed with bevel gear 1 and is rotationally connected with the drainage tube; The threaded sleeve is coaxially connected to the second bevel gear and is located on a side of the second bevel gear close to the condenser tube; The mobile part includes: The threaded rod is threadedly connected to the threaded sleeve, and one end away from the threaded sleeve is fixedly connected to the limiting plate; The guide rod has an axial direction parallel to that of the threaded rod, one end of the guide rod is passed through the limiting plate, and the other end is fixedly connected to the drainage tube.

2. An air frame for a lost foam mold according to claim 1, characterized in that: One side of the two slide plates abutting against each other is tilted toward the axis direction of the universal pipe in the direction of approaching each other.

3. An air frame for a lost foam mold according to claim 1, characterized in that: A screw cap is fixedly arranged on one end of the connecting rod located outside the frame.

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