Face gear pouring device

Abstract

The utility model discloses a face gear pouring device which can solve the problems of shrinkage cavity and shrinkage porosity in the cooling process and the problem that thick-wall and thin-wall positions cannot be cooled synchronously. According to the technical scheme, the device comprises a face gear mold, a main pouring gate, a buffer pouring gate, an auxiliary pouring gate and a transverse pouring gate, the main pouring gate is arranged at the central position of the face gear mold, the main pouring gate is composed of a pouring gate opening and a straight pouring gate, and the straight pouring gate is of a non-equal-diameter circular channel structure; the cross runner is arranged above the face gear mold, a sprue gate is arranged at the end part of the cross runner, the buffer runner is arranged below the face gear mold, the buffer runner is detachably connected with the straight runner, the buffer runner is fixedly connected with one end of the auxiliary runner, and an exhaust port is formed in the other end of the auxiliary runner. The exhaust port is communicated with the face gear mold; the upper surface of the face gear mold is further provided with a dead head. A buffer pouring gate is also arranged at one end, connected with the straight pouring gate, of the auxiliary pouring gate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of casting processing technology, and specifically relates to a face gear pouring device. BACKGROUND

[0002] The statements in this part only provide background technical information related to the utility model and do not necessarily constitute prior art.

[0003] Gear transmission system is an important part of mechanical transmission system, and is suitable for transmission devices of ship, mine, large hoisting and transportation mechanical equipment, has the advantages of multiple wheel teeth meshing at the same time, high bearing capacity, stable transmission, wide application range and large transmission range, due to the opposite directions of helix angles on both sides of the wheel tooth, the axial forces are offset in the working process, the transmission efficiency is high during operation and the service life is long. Compared with the traditional straight tooth surface gear transmission system, the herringbone tooth surface gear transmission system has higher stability and stronger bearing capacity, but is limited by the existing machining technology, lacks a tool for directly machining the herringbone tooth surface gear, and cannot directly machine the herringbone tooth surface gear, but the casting of the gear in the prior art still has problems of asynchronous cooling, shrinkage cavity and the like. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the face gear pouring device provided by the utility model can realize direct machining of herringbone tooth surface gears with different helix angles through pouring, can solve the shrinkage and porosity problems in the cooling process, and can also solve the problem that thick-walled and thin-walled positions cannot be cooled synchronously.

[0005] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0006] The utility model provides a face gear pouring device, which comprises a face gear mold, a main sprue, a buffer sprue, an auxiliary sprue and a cross sprue.

[0007] The main sprue is arranged at the center position of the face gear mold, the main sprue is composed of a sprue opening and a straight sprue, the straight sprue is a non-equal-diameter circular channel structure, the diameters of the two ends of the straight sprue are smaller than that of the middle position; the cross sprue is arranged above the face gear mold, one end of the cross sprue is fixedly connected with the main sprue, and the other end is provided with a pouring opening; the buffer sprue is arranged below the face gear mold, the buffer sprue is detachably connected with the straight sprue, one end of the buffer sprue is fixedly connected with the auxiliary sprue, and the other end is provided with an exhaust opening; the exhaust opening is communicated with the face gear mold; the upper surface of the face gear mold is further provided with a riser; and the end of the auxiliary sprue connected with the straight sprue is further provided with a buffer sprue.

[0008] Further, the cross sprue is a square pipe structure, and three cross sprues are evenly distributed on the buffer sprue, and the included angle between adjacent cross sprues is 120°.

[0009] Further, the sprue is a circular pipe structure, one end of the sprue is communicated with the face gear mold, and the other end of the sprue is a closed structure; and the side of the sprue is communicated with the cross sprue.

[0010] Further, the buffer sprue and the main sprue are further provided with a first slag blocking filter screen.

[0011] Further, the auxiliary sprue also has three auxiliary sprues which are evenly distributed on the side of the straight sprue, and the included angle between adjacent auxiliary sprues is 120°, and the auxiliary sprue is a circular channel structure.

[0012] Further, the exhaust port is a reverse conical structure, the conical part of the upper end of the exhaust port is provided with an air outlet hole, and the lower end of the exhaust port is communicated with the face gear mold.

[0013] Further, the lower end of the exhaust port and the face gear mold are further provided with a third slag blocking filter screen.

[0014] Further, the sprue and the face gear mold are further provided with a second slag blocking filter screen.

[0015] Further, the face gear mold is further provided with a plurality of chills which are evenly distributed in a circular shape on the upper surface of the face gear mold.

[0016] Further, the buffer sprue and the main sprue are provided with a circular ring-shaped clamping groove for clamping the buffer sprue and the main sprue.

[0017] Compared with the prior art, the present application has the advantages and positive effects that:

[0018] The size of the straight sprue is adjusted, the feeding requirement of the internal part of the casting can be adjusted by the size of the middle part of the straight sprue, three auxiliary sprues are arranged beside the main sprue, three exhaust outlets are arranged for auxiliary pouring, the size of the cross sprue at the bottom can also be adjusted according to the size of the casting, and the complete pouring system can complete the processing and manufacturing of the face gear; for some parts with large wall thickness difference in the solidification process of the casting, the thick part has a long solidification time and is prone to shrinkage holes and other defects, the part can be quickly cooled after the chill is arranged, the solidification sequence of the casting is more reasonable, the thick wall and the thin wall can be solidified at the same time, and the shrinkage hole and shrinkage porosity phenomenon are reduced; in the pouring process, the air, water vapor and other gases in the mold are expelled by the metal liquid, the riser can be used as a channel for discharging the gases, the gases are discharged outside, the air hole and other problems in the casting are reduced, and the riser can collect the slag. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Fig. 1 This is an overall structural diagram of the surface gear casting device of this utility model;

[0021] Fig. 2 This is a bottom structural view of the face gear casting device of this utility model;

[0022] Fig. 3 This is a structural diagram of the buffer gating system and the horizontal gating system of this utility model.

[0023] In the diagram: 1. Face gear mold; 2. Straight sprue; 3. Sprue gate; 4. Riser; 5. Horizontal sprue; 6. Secondary sprue; 7. Vent; 8. Chill; 9. Buffer sprue; 10. Gating gate; 11. Annular groove. Detailed Implementation

[0024] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise expressly indicated by the present invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] This embodiment discloses a face gear casting device provided by the present invention, such as... Figs. 1-3 As shown, it includes: face gear mold 1, main runner, buffer runner 9, auxiliary runner 6 and horizontal runner 5;

[0027] The main runner is arranged at the center of the face gear mold 1, the cross runner 5 is arranged above the face gear mold 1, one end of the cross runner 5 is fixedly connected with the main runner, and the other end is provided with a pouring opening 10, the buffer runner 9 is arranged below the face gear mold 1, the buffer runner 9 is detachably connected with the main runner, one end of the buffer runner 9 is fixedly connected with the auxiliary runner 6, and the other end is provided with an exhaust port 7, the exhaust port 7 is communicated with the face gear mold 1, and the upper surface of the face gear mold 1 is further provided with a riser 4; the end, where the auxiliary runner 6 is connected with the main runner, is further provided with the buffer runner 9, and the first slag blocking filter screen is further arranged between the buffer runner 9 and the main runner. The second slag blocking filter screen is further arranged between the pouring opening 10 and the face gear mold 1. The first layer of slag blocking filter screen designed in the buffer runner 9 can preliminarily filter the molten slag. When the metal liquid flows, the filter screen can intercept the molten slag particles with a larger volume, so that the internal inclusion of the casting is avoided, and the quality of the casting is improved. The second layer of slag blocking filter screen designed at the end of the cross runner 5 can intercept the small molten slag particles missed by the first layer of filter screen. Because the first layer of filter screen may not completely filter all impurities, some small slag particles will continue to flow with the metal liquid, and the second layer of filter screen plays a supplementary filtering role, more finely purifies the metal liquid, further reduces the inclusion defects in the casting, and simultaneously buffers the flow rate of the metal liquid. After passing through the first layer of filter screen, the flow state of the metal liquid may not be stable enough, the second layer of filter screen can make the flow rate and flow direction of the metal liquid more stable and uniform, better ensures the stability of the pouring process, and helps to improve the quality and performance of the casting.

[0028] A buffer runner 9 with a certain depth is arranged below the main runner, three flat rectangular cross runners 5 are designed in the upper half of the buffer runner 9, there is a layer of slag blocking filter screen in the buffer runner 9 at the bottom of the main runner, and the buffer runner 9 is designed for the following purposes. First, buffering effect. When the pouring liquid such as metal liquid enters the runner from the runner opening 3, the flow rate of the liquid is relatively fast. The extra section can reduce the speed of the liquid, avoid excessive impact of the liquid on the bottom of the cavity and cause splashing and turbulence, so that the pouring process is more stable. Second, flow guiding effect. The pouring liquid can be better guided into each part of the mold, so that the pouring liquid can more uniformly fill the cavity, which is more important for castings with complex shapes, multiple branches or thin wall parts. It can ensure that the liquid flows smoothly to these parts that need to be filled, and reduce casting defects.

[0029] The main runner is composed of a runner gate 3 and a straight runner 2, the straight runner 2 is a non-equal diameter circular channel structure, the diameter of the two ends of the straight runner 2 is smaller than the diameter of the middle position, which is used to increase the storage amount of the metal liquid and the cooling time of the metal liquid in the straight runner 2. The main runner is designed as a circular vase type, which can make the metal liquid fill the whole main runner quickly, and the vase type main runner can make the metal liquid flow into the bottom face gear model more smoothly under the action of gravity, so that the filling time of the bottom face gear is as close as possible.

[0030] The cross runner 5 is a square pipe structure, and the cross runner 5 has three and is evenly distributed on the buffer runner 9, and the included angle between adjacent cross runners 5 is 120°.

[0031] The gate 10 is a circular tubular structure, one end of which is communicated with the face gear mold 1, and the other end is a closed structure; the side of the gate 10 is communicated with the cross runner 5.

[0032] The auxiliary runner 6 also has three and is evenly distributed on the side of the straight runner 2, and the included angle between adjacent auxiliary runners 6 is 120°, and the auxiliary runner 6 is a circular channel structure. Three auxiliary runners 6 are arranged at the position where the main runner flows through the metal liquid, and a reverse tapered gas outlet channel is designed at the end of each auxiliary runner 6, which can fully release the gas in the metal liquid while preventing the metal liquid from leaking due to too much gas. A slag blocking screen is arranged at the position where the end of the auxiliary runner 6 connects the face gear, to block the filter slag from the metal liquid.

[0033] The exhaust port 7 is a reverse tapered structure, and the tapered part at the upper end of the exhaust port 7 is provided with a gas outlet hole, and the lower end of the exhaust port 7 is communicated with the face gear mold 1. During the solidification process of the casting, the metal liquid will shrink in volume, and the metal liquid in the exhaust port 7 can continuously supplement into the casting, preventing defects such as shrinkage holes and shrinkage porosity in the casting, and ensuring the compactness of the casting. The upper surface of the face gear mold 1 is also provided with a riser 4, which has the function of exhaust. During pouring, the air, water vapor and other gases in the cavity will be expelled by the metal liquid, and the riser 4 can be used as a channel for the exhaust of these gases, allowing the gases to escape outside the mold, reducing the problem of air holes inside the casting. In addition, the riser 4 can play a role in collecting slag. The slag and other impurities in the metal liquid will float on the surface of the liquid, and the position of the riser 4 can collect these slag, preventing the slag from entering the casting, thereby improving the quality of the casting.

[0034] The lower end of the riser 4 and the face gear mold 1 are also provided with a third slag blocking screen.

[0035] The face gear mold 1 is further provided with a plurality of chills 8, which are circularly and uniformly distributed on the upper surface of the face gear mold 1. The chills 8 can accelerate the local cooling speed of the casting. During the solidification of the casting, for some parts with large wall thickness difference, the thicker part has a long solidification time and is prone to produce defects such as shrinkage. After the chills 8 are placed, the part can be quickly cooled, the solidification sequence of the casting is more reasonable, and the thick wall and the thin wall part can tend to be simultaneously solidified.

[0036] The buffer gate 9 and the main gate are provided with a circular clamping groove 11 for clamping the buffer gate 9 and the main gate.

[0037] Although the specific embodiments of the utility model have been described in combination with the drawings, it is not a limitation on the protection scope of the utility model. It should be understood by those skilled in the art that various modifications or deformations made by those skilled in the art on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.

Claims

1. A face gear pouring apparatus characterized by, The utility model relates to a face gear mold, main runner, buffer runner, sub runner and cross runner are provided. The main runner is arranged at the center position of the face gear mold, the main runner is composed of a runner gate and a straight runner, the straight runner is a non-equal-diameter circular channel structure, the diameters of the two ends of the straight runner are smaller than the diameter of the middle position, the cross runner is arranged above the face gear mold, one end of the cross runner is fixedly connected with the main runner, the other end is provided with a pouring gate, the buffer runner is arranged below the face gear mold, the buffer runner is detachably connected with the straight runner, one end of the buffer runner is fixedly connected with the sub runner, the other end is provided with an exhaust port, the exhaust port is communicated with the face gear mold, the upper surface of the face gear mold is further provided with a riser, and the end of the sub runner connected with the straight runner is further provided with a buffer runner. The cross runner is a square pipe structure, the cross runner has three and is evenly distributed on the buffer runner, and the included angle between adjacent cross runners is 120 DEG.

2. A face gear pouring apparatus as claimed in claim 1, wherein, The pouring gate is a circular tubular structure, one end of which is communicated with the face gear mold, and the other end is a closed structure, the side of the pouring gate is communicated with the cross runner.

3. A face gear pouring apparatus as claimed in claim 1, wherein, A first slag blocking screen is further arranged between the buffer runner and the main runner.

4. A face gear pouring apparatus as claimed in claim 1, wherein, The sub runner also has three and is evenly distributed on the side of the straight runner, and the included angle between adjacent sub runners is 120 DEG, and the sub runner is a circular channel structure.

5. A face gear pouring apparatus as claimed in claim 1, wherein, The exhaust port is a reverse conical structure, the conical part of the upper end of the exhaust port is provided with an air outlet, and the lower end of the exhaust port is communicated with the face gear mold.

6. A face gear pouring apparatus as claimed in claim 1, wherein, A third slag blocking screen is further arranged between the lower end of the exhaust port and the face gear mold.

7. A face gear pouring apparatus as claimed in claim 6, wherein, A second slag blocking screen is further arranged between the pouring gate and the face gear mold.

8. A face gear pouring apparatus as claimed in claim 1, wherein, The upper surface of the face gear mold is further provided with a plurality of chills and is evenly distributed in a circular shape on the upper surface of the face gear mold.

9. A face gear pouring apparatus as defined in claim 1 wherein, A circular ring-shaped clamping groove is arranged between the buffer runner and the main runner for clamping the buffer runner and the main runner.

10. A face gear pouring apparatus as defined in claim 1 wherein, ​

Images