A brake disc stacking mold and a brake disc casting method

Abstract

The application relates to the technical field of brake disc casting, and discloses a brake disc stacking mold and a brake disc casting method, which comprise a bottom mold base, a vibrating mold base is slidably connected to the inner wall of the bottom mold base, a sand mold is arranged in the middle of the vibrating mold base, a sand removal opening is arranged on the front side of the bottom mold base and the vibrating mold base, the bottom of the sand mold is provided with a split flow cavity, a plurality of upper mold bases are sequentially and movably connected to the sand mold, a brake disc cavity is arranged at the upper end of the upper mold base, and a top mold base is movably connected to the top of the upper mold base. The application avoids the use of the partition plate and the ventilation core, the placing amount of the mold for brake disc casting is greatly reduced, the brake disc forming is not interfered by the collision and damage of the sand mold, the casting forming is reliable, in addition, only one sand mold in the bottom mold base is used for assisting the cutting separation of the subsequent runner iron, the waste of the sand mold is low, the sand making cost is saved, the demolding and the runner separation are directly controlled by the vibration assembly, and the processing efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of brake disc casting technology, specifically to a brake disc stacking mold and a brake disc casting method. Background Technology

[0002] In the automotive industry, brake discs are a key component ensuring vehicle braking safety, and their production volume and quality directly affect the overall performance and safety of the vehicle. Current casting methods for manufacturing ventilated brake discs employ a wet-sand molding process, using wet-sand as a mold and casting in stacked molds.

[0003] Utility model patent CN219665055U discloses a casting stack and casting pouring system for brake disc castings with ventilation channels, relating to the field of brake disc casting technology. It solves the problems of sand core assembly processes easily encountering sand molds, resulting in sand rubbing or core drift, and the uneven hardness of brake discs caused by single-gate concentric filling methods. The patent includes an upper ventilation core, a lower ventilation core, and a partition core. A partition core is placed on the lower ventilation core, and an upper ventilation core is placed on the partition core. A sand-shooting center is located at the center of the partition core, and several vents are evenly distributed around the sand-shooting center. These vents, together with the upper and lower ventilation cores, form an exhaust chamber to discharge gases generated during the casting pouring process.

[0004] In the casting stack mold described in the aforementioned patent, the external part is sealed with upper and lower sand molds during the casting of brake discs. However, internally, a lower ventilation core, a partition core, and an upper ventilation core need to be placed sequentially between every two brake discs. For casting multiple sets of brake discs, multiple sets of molds need to be placed, which is very troublesome. Since the parts in contact with the brake discs are all made of sand molds, and the sand molds are made by pressing molding sand, they are very easy to be damaged when all are installed, resulting in casting defects. When casting multiple brake discs, multiple sand molds are required. These sand molds are often not reusable. For example, the ventilation core used for forming the brake disc air duct must be broken to obtain the brake disc. The use of a large number of sand molds is wasteful and costly. After casting is completed and the sand molds are removed, multiple brake discs connected to the sprue iron often need to be transferred as a whole to a specific vibration device for gate separation, resulting in low processing efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the problems of conventional brake disc sand mold stacking molds, such as inconvenient placement, easy damage leading to casting defects, waste and high cost due to the extensive use of disposable sand molds, and low processing efficiency due to the need for gate separation during transfer. This invention provides a brake disc stacking mold and a brake disc casting method.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0007] A brake disc stacking mold includes a bottom mold base, a vibrating mold base slidably engaged with the inner wall of the bottom mold base, a sand mold in the middle of the vibrating mold base, a sand cleaning port on the front side of the bottom mold base and the vibrating mold base, a flow-diverting cavity at the bottom of the sand mold, and a plurality of upper mold bases sequentially engaged with the sand mold, a brake disc cavity at the upper end of the upper mold base, and a top mold base slidably engaged with the top of the upper mold base;

[0008] Both the upper mold base and the top mold base have L-shaped runners at their central edges that communicate with the flow divider cavity and the brake disc cavity. The top mold base has a sprue that passes through the upper mold base and communicates with the flow divider cavity. An elastic sealing component is provided on the upper side of the L-shaped runner. Several ventilation slot plates in a circular array are slidably inserted into the edge of the brake disc cavity. Vibration components are provided on the left and right sides of the bottom upper mold base. The vibration components are used to adjust the demolding of the ventilation slot plates and the separation of the casting from the gate.

[0009] Furthermore, the vibrating mold base is provided with an elliptical surround that is movably sleeved on the outside of the sand mold in the middle, and the top height of the elliptical surround is lower than the height of the lower wall of the adjacent upper mold base. The edge of the vibrating mold base is threaded with a guide ring that is rotatably connected to the inner wall of the bottom mold base, and three guide posts are fixedly connected to the guide ring.

[0010] Furthermore, handles are fixedly connected to both the left and right sides of the upper mold base, and the bottom upper mold base is movably attached to the edge of the bottom mold base.

[0011] Furthermore, the L-shaped runners are circumferentially arranged on both the upper mold base and the top mold base, and there are three of each. The L-shaped runners are offset from bottom to top, and the top of the L-shaped runners is horizontally inclined relative to the brake disc cavity.

[0012] Furthermore, the elastic sealing assembly includes an elastic ring slidably connected to the middle cavity wall of the upper mold base and the top mold base. A sealing plate is fixedly connected to the bottom of the elastic ring and movably abuts against the top of the L-shaped sprue. An elastic plate is slidably engaged with the inner side of the sealing plate and movably abuts against the top of the L-shaped sprue. The thickness of the elastic plate is less than the thickness of the sealing plate. The upper mold base and the top mold base each have a clearance cavity corresponding to the sealing plate and the elastic plate, respectively.

[0013] Furthermore, the ventilation slot plate is movably abutted against the inner wall of the brake disc cavity, the ventilation slot plate is provided with an inclined groove, the edge cavity wall of the upper mold base is rotatably connected to an adjusting ring, the adjusting ring is provided with a pin that is movably engaged with the inclined groove, the upper wall of the adjusting ring is fixedly connected with three positioning pins, the upper and lower positioning pins are movably inserted into each other, and the guide pin is movably inserted into the positioning pin.

[0014] Furthermore, both the upper mold base and the top mold base are provided with movable grooves corresponding to the positioning posts, and a positioning tension spring that is fixedly connected to the inner wall of the movable groove is movably sleeved on the positioning post.

[0015] Furthermore, the vibration components on both sides are arranged circumferentially. Each vibration component includes a support rod fixedly connected to the inner wall of one side of the bottom handle. An adjusting cylinder and a toothed cylinder that meshes with the adjusting ring are slidably engaged on the support rod. Teeth corresponding to the toothed cylinder are respectively provided on both sides of the bottom adjusting ring. A clearance groove is provided at the end of the adjusting cylinder away from the support rod, and a buffer spring is fixedly connected therein. The elastic force of the buffer spring is greater than the elastic force of the positioning tension spring.

[0016] The other side of the handle is rotatably connected to a rotating shaft, which is driven by a motor installed on the outer wall of the handle. A vibrating cylinder is movably sleeved on the rotating shaft and is movably engaged with the inner wall of the toothed cylinder. The inner wall of the vibrating cylinder is provided with a curved annular groove that is connected end to end. The outer wall of the rotating shaft is provided with a pin protrusion that is movably engaged with the curved annular groove.

[0017] Furthermore, the inner wall of the gear cylinder is rotatably connected to an adjusting ring sleeved around the outer periphery of the adjusting cylinder. The inner wall of the adjusting ring is provided with an arc groove, and the outer wall of the adjusting cylinder is provided with a pin protrusion that is movably engaged with the arc groove. A retaining plate is fixedly connected to the bottom of the adjusting ring, and a swing groove corresponding to the retaining plate is provided at the bottom of the gear cylinder.

[0018] Telescopic cylinders are installed on both sides of the upper mold base at the bottom. The telescopic end of the telescopic cylinder is slidably connected to the side wall of the upper mold base. A protruding post one and a protruding post two are fixedly connected to the telescopic end of the telescopic cylinder. The protruding post one is slidably engaged with the card plate. The bottom of the adjusting ring at the bottom has a slot that is movably engaged with the protruding post two.

[0019] A brake disc casting method includes the following steps:

[0020] S1. After the top mold base is pressed and solidified, molten iron is poured in through the sprue, flows through the flow divider cavity and each of the L-shaped sprues into each of the brake disc cavities. After the molten iron cools, the used sand mold is cleaned out through the sand cleaning port.

[0021] S2. Control the operation of the vibration component and provide each of the ventilation slot plates and the vibration mold base with gradually increasing vibration force. The ventilation slot plates and the brake disc automatically and safely demold based on the vibration force. At the same time, the sprue iron and each of the L-shaped sprues and the straight sprue automatically separate based on the vibration force. Under the action of vibration force, the sprue iron in each of the L-shaped sprues breaks at the gate and separates from the brake disc in conjunction with the avoidance action of the elastic sealing component, and breaks at the bend.

[0022] S3. Using an external cutting mechanism, cut the L-shaped gating channels and the gating iron at the bottom of the straight gating channel through the sand cleaning port within the space occupied by the original sand mold to separate them from each other. Subsequently, control the vibration component to drive each ventilation slot plate to completely move out of the brake disc cavity.

[0023] S4. Remove the top mold base and the upper mold base from top to bottom in sequence, and remove each brake disc at the same time.

[0024] The beneficial effects of this invention are as follows:

[0025] In casting a batch of brake discs, this invention uses multiple upper mold bases in conjunction with a bottom mold base and a top mold base. Different mold bases are placed layer by layer in a simple stacking manner, and a brake disc can be formed between two mold bases. Since the ventilation groove plate used for forming the ventilation groove of the brake disc is set in the upper mold base and can be controlled to expand and contract, the use of partitions and ventilation cores is avoided. The number of molds required for casting the brake disc is greatly reduced. Moreover, the brake disc forming is located between the upper mold base and the top mold base, and is not affected by sand mold damage, so the casting is reliable. In addition, only one sand mold in the bottom mold base is used to assist in the subsequent cutting and separation of the sprue iron, which reduces the waste of sand mold and saves sand production costs.

[0026] This invention utilizes a vibration assembly after the brake disc is cast to directly control the demolding of the ventilation slot plate and the separation of the brake disc casting from the gate, resulting in high processing efficiency. By gradually increasing the vibration force, the demolding of the ventilation slot plate and the separation of the brake disc casting from the gate are ensured to be safe and reliable, avoiding significant demolding and separation damage. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the stacking mold of the present invention;

[0028] Figure 2 This is a three-dimensional sectional view of the stacking mold of the present invention;

[0029] Figure 3 This is an exploded view of the upper mold base and the lower mold base of the stacking mold of the present invention;

[0030] Figure 4 This is an exploded view of the upper mold base and the top mold base of the stacking mold of the present invention;

[0031] Figure 5 This is an exploded view of the upper mold base and elastic ring portion of the stacking mold of the present invention;

[0032] Figure 6 The stacking mold of this invention is a three-dimensional section of the upper mold base portion. Figure 1 ;

[0033] Figure 7The stacking mold of this invention is a three-dimensional section of the upper mold base portion. Figure 2 ;

[0034] Figure 8 This is a three-dimensional sectional view of the toothed cylinder portion of the stacking mold of the present invention;

[0035] Figure 9 This is an exploded view of the toothed cylinder and adjusting cylinder of the stacking mold of the present invention;

[0036] Figure 10 This is a three-dimensional sectional view of the adjusting cylinder portion of the stacking mold of the present invention;

[0037] Figure 11 This is a three-dimensional structural diagram of the adjusting ring and guide ring of the stacking mold of the present invention;

[0038] Figure 12 This is a three-dimensional structural diagram of the elastic ring part of the stacking mold of the present invention.

[0039] Reference numerals: 1. Bottom mold base; 11. Vibrating mold base; 12. Guide ring; 13. Guide pillar; 14. Sand cleaning gate; 2. Sand mold; 21. Diverter cavity; 3. Upper mold base; 31. Handle; 32. Brake disc cavity; 4. Top mold base; 5. L-shaped sprue; 51. Elastic ring; 52. Sealing plate; 53. Elastic plate; 6. Ventilation slot plate; 61. Inclined groove; 62. Adjusting ring; 63. Pin; 64. Positioning pillar; 65. Positioning tension spring; 7. Support rod; 71. Toothed cylinder; 72. Adjusting pipe; 73. Arc groove; 74. Clamping plate; 75. Adjusting cylinder; 76. Buffer spring; 77. Pin protrusion one; 8. Rotating shaft; 81. Vibrating cylinder; 82. Curved ring groove; 83. Pin protrusion two; 9. Telescopic cylinder; 91. Protrusion one; 92. Protrusion two; 10. Straight sprue. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0041] Example 1, as Figures 1-12 As shown, a brake disc stacking mold includes a bottom mold base 1, a vibrating mold base 11 is slidably engaged with the inner wall of the bottom mold base 1, a sand mold 2 is provided in the middle of the vibrating mold base 11, a sand cleaning port 14 is provided on the front side of the bottom mold base 1 and the vibrating mold base 11, the bottom of the sand mold 2 has a flow-diverting cavity 21, a plurality of upper mold bases 3 are movably engaged with the sand mold 2, a brake disc cavity 32 is provided at the upper end of the upper mold base 3, and a top mold base 4 is movably engaged with the top upper mold base 3;

[0042] Both the upper mold base 3 and the top mold base 4 have L-shaped runners 5 that communicate with the flow channel cavity 21 and the brake disc cavity 32 at their middle edges. The top mold base 4 has a sprue 10 that passes through the upper mold base 3 and communicates with the flow channel cavity 21. An elastic sealing component is provided on the upper side of the L-shaped runner 5. Several ventilation slot plates 6 in a circular array are slidably inserted into the edge of the brake disc cavity 32. Vibration components are provided on both the left and right sides of the bottom upper mold base 3. The vibration components are used to adjust the demolding of the ventilation slot plates 6 and the separation of the casting from the gate.

[0043] In use, the sand mold 2 is placed in the middle of the vibrating mold base 11. The upper mold base 3 and the top mold base 4 are stacked from bottom to top, and the top mold base 4 is pressed and secured by an external fixing mechanism. Molten iron is poured in through the sprue 10, and after passing through the flow distribution cavity 21, it is diverted by each L-shaped sprue 5 into each brake disc cavity 32. After the molten iron cools, the used sand mold 2 is broken and cleaned out through the sand cleaning port 14. Subsequently, the vibration assembly is controlled to operate and provide each ventilation slot plate 6 and the vibrating mold base 11 with gradually increasing vibration force. The ventilation slot plate 6 and the brake disc automatically and safely demold based on the vibration force. At the same time, the sprue iron automatically separates from each L-shaped sprue 5 and the sprue 10 based on the vibration force. Under the action of vibration, the sprue iron in each L-shaped sprue 5 breaks and separates from the brake disc at the gate with the help of the elastic sealing component. It can also break at the L-shaped bend after the vibration force increases, so that the lateral sprue iron in the L-shaped sprue 5 can be laterally removed. Then, the external cutting mechanism is used to cut the sprue iron at the bottom of each L-shaped sprue 5 and the straight sprue 10 in the area above the flow cavity 21 through the sand cleaning port 14 to separate them from each other. The vibration component is controlled to drive each ventilation slot plate 6 to completely move out of the brake disc cavity 32. The top mold base 4 and the upper mold base 3 are removed from top to bottom in sequence, and each brake disc and the broken sprue iron in the corresponding mold base are removed at the same time.

[0044] Furthermore, handles 31 are fixedly connected to both the left and right sides of the upper mold base 3, and the bottom upper mold base 3 is movably attached to the edge of the bottom mold base 1.

[0045] In the second embodiment, based on the above embodiment, three L-shaped runners 5 are circumferentially arranged on both the upper mold base 3 and the top mold base 4. The L-shaped runners 5 are offset from bottom to top, and the top of the L-shaped runners 5 is horizontally inclined relative to the brake disc cavity 32.

[0046] This design facilitates non-concentric rotary casting of the brake disc cavity 32 in each layer, achieving a rotating flow field, reducing the internal temperature gradient of the molten iron, making the molten iron temperature more uniform, and improving the casting quality. Furthermore, since the L-shaped gating channel 5 corresponding to each brake disc cavity 32 is offset relative to other layers, after the molten iron in each L-shaped gating channel 5 cools and forms gating channel iron, it is easy to achieve the breakage at the L-shaped bend under the action of vibration by using the corresponding elastic sealing components.

[0047] In embodiment two, based on the above embodiment, the elastic sealing assembly includes an elastic ring 51 that is slidably connected to the middle cavity wall of the upper mold base 3 and the top mold base 4. The bottom of the elastic ring 51 is fixedly connected to a sealing plate 52 that is in sealing contact with the top of the L-shaped sprue 5. The inner side of the sealing plate 52 is slidably engaged with an elastic plate 53 that is in sealing contact with the top of the L-shaped sprue 5. The thickness of the elastic plate 53 is less than the thickness of the sealing plate 52. The upper mold base 3 and the top mold base 4 respectively have clearance cavities corresponding to the sealing plate 52 and the elastic plate 53.

[0048] With this design, when molten iron is poured, the sealing plate 52 and the elastic plate 53 work together to seal the top of the L-shaped sprue 5. Subsequently, when the sprue iron in the L-shaped sprue 5 moves up and down under the action of vibration, the sealing plate 52 can drive the elastic plate 53 to move upward under the action of extrusion force and enter the relief cavity to avoid the gap. This makes it easier for the gate connection between the L-shaped sprue iron and the brake disc to be subjected to repeated impact and shear force under the action of vibration force, thereby causing metal fatigue and even fracture. Correspondingly, after the vibration effect is increased, the L-shaped sprue iron pushes the sealing plate 52 to move upward to the maximum distance in the relief cavity under the action of vibration force. The horizontal part of the L-shaped sprue iron cannot continue to move upward, while the vertical part can continue to move upward by extruding the elastic plate 53, thereby facilitating the fracture at the bend of the L-shaped sprue iron.

[0049] In embodiment three, based on the above embodiment, the ventilation slot plate 6 is movably abutted against the inner wall of the brake disc cavity 32. The ventilation slot plate 6 is provided with an inclined groove 61. An adjusting ring 62 is rotatably connected to the edge cavity wall of the upper mold base 3. A pin 63 is provided on the adjusting ring 62 and is movably engaged with the inclined groove 61. Three positioning pins 64 are fixedly connected to the upper wall of the adjusting ring 62, and the upper and lower positioning pins 64 are movably inserted into each other.

[0050] Both the upper mold base 3 and the top mold base 4 are provided with movable grooves corresponding to the positioning pins 64, and the positioning pins 64 are movably sleeved with positioning tension springs 65 that are fixedly connected to the inner wall of the movable grooves.

[0051] The positioning spring 65 limits the positioning post 64, and the adjusting ring 62 drives the pin 63 to be fixedly engaged with the inclined groove 61, thereby restricting the movement of each ventilation groove plate 6. When casting the brake disc, the ventilation groove plate 6 is stably abutted against the inner wall of the middle part of the brake disc cavity 32, ensuring the stable forming of the brake disc ventilation groove.

[0052] Furthermore, since each adjusting ring 62 is relatively fixed, when installing and connecting the upper mold base 3 and the top mold base 4, the three positioning pins 64 in each mold base can be used for positioning and installation, which also facilitates the connection of the sprue.

[0053] In embodiment four, based on the above embodiment, the vibration components on both sides are arranged circumferentially. The vibration components include a support rod 7 fixedly connected to the inner wall of one side of the bottom handle 31. An adjusting cylinder 75 and a toothed cylinder 71 that meshes with the adjusting ring 62 are slidably engaged on the support rod 7. The bottom adjusting ring 62 is provided with teeth on both sides corresponding to the toothed cylinder 71. The end of the adjusting cylinder 75 away from the support rod 7 is provided with a clearance groove and a buffer spring 76 is fixedly connected therein. The elastic force of the buffer spring 76 is greater than the elastic force of the positioning tension spring 65.

[0054] A rotating shaft 8 is rotatably connected to the other side of the handle 31. The rotating shaft 8 is driven by a motor installed on the outer wall of the handle 31. A vibrating cylinder 81 is movably sleeved on the rotating shaft 8 and is movably engaged with the inner wall of the gear cylinder 71. A curved annular groove 82 with the ends connected is opened on the inner wall of the vibrating cylinder 81. A pin protrusion 83 is provided on the outer wall of the rotating shaft 8 and is movably engaged with the curved annular groove 82.

[0055] When vibration demolding and separation of the sprue are required, the control motor drives the rotating shaft 8 to make the pin protrusion 83 rotate continuously. The pin protrusion 83 drives the curved annular groove 82 to make the vibrating cylinder 81 reciprocate along the toothed cylinder 71 to vibrate. The vibrating cylinder 81 intermittently squeezes the buffer spring 76 to push the adjusting cylinder 75 to make the toothed cylinder 71 move slightly. The toothed cylinder 71 then drives the adjusting ring 62 at the bottom to rotate. Under the elastic force of the positioning tension spring 65, the adjusting ring 62 can automatically reset when the vibrating cylinder 81 releases the squeezing action, thus realizing the reciprocating deflection of the adjusting ring 62. Through the transmission of each positioning post 64, the ventilation slot plate 6 in each mold base can automatically vibrate under the drive of the corresponding adjusting ring 62 to achieve demolding with the brake disc and avoid subsequent adhesion and difficulty in removal.

[0056] In embodiment five, based on the above embodiments, an adjusting tube 72 sleeved around the adjusting tube 75 is rotatably connected to the inner wall of the gear cylinder 71. An arc groove 73 is provided on the inner wall of the adjusting tube 72. A pin protrusion 77 is provided on the outer wall of the adjusting tube 75 to be movably engaged with the arc groove 73. A retaining plate 74 is fixedly connected to the bottom of the adjusting tube 72. A swing groove corresponding to the retaining plate 74 is provided at the bottom of the gear cylinder 71.

[0057] Telescopic cylinders 9 are installed on both sides of the bottom upper mold base 3. The telescopic ends of the telescopic cylinders 9 are slidably connected to the side wall of the upper mold base 3. The telescopic ends of the telescopic cylinders 9 are respectively fixedly connected to the first protrusion 91 and the second protrusion 92. The first protrusion 91 is slidably engaged with the card plate 74. The bottom adjusting ring 62 has a slot at the bottom that is movably engaged with the second protrusion 92.

[0058] Because the telescopic cylinder 9 drives the protrusion 91 to simultaneously engage and limit the clamping plate 74, the adjusting tube 72 cannot deflect. The adjusting tube 72 then uses the arc groove 73 to drive the pin protrusion 77 to fix the position of the adjusting cylinder 75 and the buffer spring 76. Initially, the buffer spring 76 is far from the vibrating cylinder 81, so the vibration force transmitted through the buffer spring 76 is weak when the vibrating cylinder 81 is running. However, by controlling the telescopic cylinder 9 to gradually extend, the protrusion 91 drives the clamping plate 74 to deflect, and the clamping plate 74 drives the adjusting tube 72 to deflect. The adjusting tube 72 uses the arc groove 73 to drive the pin protrusion 77, causing the adjusting cylinder 75 to gradually bring the buffer spring 76 closer to the vibrating cylinder 81. The buffer spring 76 is gradually compressed into the clearance groove and... This allows the vibrating cylinder 81 to directly press the adjusting cylinder 75, thereby increasing the transmission of vibration force and increasing the reciprocating deflection amplitude of the adjusting ring 62 driven by the toothed cylinder 71. This gradually increases the vibration force and avoids excessive initial impact force when the mold is demolded and separated from the sprue iron, which could cause significant damage to the brake disc separation part. When the brake disc needs to be removed, the telescopic cylinder 9 is extended to its maximum length so that the adjusting cylinder 75 is close enough to the vibrating cylinder 81. At the same time, the motor drives the rotating shaft 8 so that the vibrating cylinder 81 extends to its maximum distance and remains there. The vibrating cylinder 81 then presses the adjusting cylinder 75 so that the toothed cylinder 71 moves to its maximum distance, thereby driving the adjusting ring 62 to deflect to its maximum extent. All ventilation slot plates 6 are completely removed from the brake disc.

[0059] The initial telescopic cylinder 9 drives the second protrusion 92 to engage with the slot to limit the deflection of the adjusting ring 62, thereby further fixing the adjusting ring 62 and strengthening the seamless contact between the ventilation slot plate 6 and the inner wall of the brake disc cavity 32. This improves the reliability of the brake disc ventilation slot molding. Before vibration is required, the telescopic cylinder 9 can be controlled to extend and drive the second protrusion 92 to disengage from the slot and release the restriction on the adjusting ring 62. The corresponding telescopic cylinder 9 can drive the first protrusion 91 to move the buffer spring 76 closer to the vibration cylinder 81 to reach the initial pressure position.

[0060] In embodiment six, based on the above embodiments, the vibrating mold base 11 is provided with an elliptical surround that is movably sleeved on the outside of the sand mold 2, and the top height of the elliptical surround is lower than the height of the lower wall of the adjacent upper mold base 3. The edge of the vibrating mold base 11 is threadedly connected to a guide ring 12 that is rotatably connected to the inner wall of the bottom mold base 1. Three guide posts 13 are fixedly connected to the guide ring 12, and the guide posts 13 are movably inserted into the positioning posts 64.

[0061] The elliptical surrounding design of the sand mold 2 facilitates its positioning. When installing the upper mold base 3 at the bottom, the three positioning pins 64 in the upper mold base 3 are inserted and positioned with the guide pin 13, which facilitates the connection of the gating system.

[0062] The initial vibrating mold base 11 is located at the bottom of the inner cavity of the bottom mold base 1. When the adjusting ring 62 drives the positioning column 64 to make the guide column 13 reciprocate, the guide column 13 drives the guide ring 12 to make the vibrating mold base 11 vibrate up and down. By utilizing the design that the top height of the ellipse is lower than the lower wall height of the adjacent upper mold base 3, sufficient vibration space is ensured for the vibrating mold base 11. When the vibrating mold base 11 vibrates, it can directly vibrate and demold the sprue iron in each L-shaped sprue 5 and the straight sprue 10, thereby improving the processing efficiency.

[0063] Example 7: Based on the above examples, a brake disc casting method is provided, comprising the following steps:

[0064] S1. After the top mold base 4 is pressed and solidified, molten iron is poured in through the sprue 10, and flows through the flow channel 21 and each L-shaped sprue 5 into each brake disc cavity 32. After the molten iron cools down, the used sand mold 2 is cleaned out through the sand cleaning port 14.

[0065] S2. Control the operation of the vibration component and provide each ventilation slot plate 6 and vibration mold base 11 with gradually increasing vibration force. The ventilation slot plate 6 and brake disc automatically and safely demold based on the vibration force. At the same time, the sprue iron and each L-shaped sprue 5 and straight sprue 10 automatically separate based on the vibration force. Under the action of vibration force, the sprue iron in each L-shaped sprue 5 breaks at the gate and separates from the brake disc with the avoidance action of the elastic sealing component, and breaks at the bend.

[0066] S3. Using an external cutting mechanism, the sprue iron at the bottom of each L-shaped sprue 5 and the straight sprue 10 is cut off within the space occupied by the original sand mold 2 through the sand cleaning port 14 to separate them from each other. Subsequently, the vibration control component drives each ventilation slot plate 6 to be completely removed from the brake disc cavity 32.

[0067] S4. Remove the top mold base 4 and the upper mold base 3 from top to bottom, and remove each brake disc at the same time.

[0068] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A brake disc stacking mold, comprising a bottom mold base (1), characterized in that, The inner wall of the bottom mold base (1) is slidably engaged with a vibrating mold base (11). The edge of the vibrating mold base (11) is threaded with a guide ring (12) that is rotatably connected to the inner wall of the bottom mold base (1). Three guide posts (13) are fixedly connected to the guide ring (12). A sand cleaning port (14) is opened on the front side of the bottom mold base (1) and the vibrating mold base (11). A sand mold (2) is provided in the middle of the vibrating mold base (11). The bottom of the sand mold (2) has a flow-dividing cavity (21). The sand mold (2) is movably engaged with the guide ring (12) in sequence. A plurality of upper mold bases (3) are connected. The vibrating mold base (11) is provided with an elliptical enclosure that is movably fitted outside the sand mold (2) in the middle. The top height of the elliptical enclosure is lower than the height of the lower wall of the adjacent upper mold base (3). The upper mold base (3) is fixedly connected to the left and right sides. The bottom upper mold base (3) is movably attached to the edge of the bottom mold base (1). The upper end of the upper mold base (3) is provided with a brake disc cavity (32). The top upper mold base (3) is movably attached to the top mold base (4). The upper mold base (3) and the top mold base (4) are both provided with L-shaped runners (5) that communicate with the flow distribution cavity (21) and the brake disc cavity (32) at their middle edges. The top mold base (4) is provided with a sprue (10) that passes through the upper mold base (3) and communicates with the flow distribution cavity (21) at its middle. An elastic sealing component is provided on the upper side of the L-shaped runner (5). Several ventilation slot plates (6) in a circular array are slidably inserted into the edge of the brake disc cavity (32). Vibration components are provided on the left and right sides of the bottom upper mold base (3). The vibration components are used to adjust the demolding of the ventilation slot plates (6) and the separation of the casting from the gate. The elastic sealing assembly includes an elastic ring (51) slidably connected to the middle cavity wall of the upper mold base (3) and the top mold base (4). The bottom of the elastic ring (51) is fixedly connected to a sealing plate (52) that seals and moves against the top of the L-shaped sprue (5). The inner side of the sealing plate (52) is slidably engaged with an elastic plate (53) that seals and moves against the top of the L-shaped sprue (5). The thickness of the elastic plate (53) is less than the thickness of the sealing plate (52). The upper mold base (3) and the top mold base (4) respectively have clearance cavities corresponding to the sealing plate (52) and the elastic plate (53). The ventilation slot plate (6) is in movable contact with the inner wall of the brake disc cavity (32). The ventilation slot plate (6) is provided with an inclined groove (61). The edge cavity wall of the upper mold base (3) is rotatably connected to an adjusting ring (62). The adjusting ring (62) is provided with a pin (63) that is movably engaged with the inclined groove (61). The upper wall of the adjusting ring (62) is fixedly connected with three positioning pins (64). The upper and lower positioning pins (64) are movably inserted into each other, and the guide pin (13) is movably inserted into the positioning pin (64). Both the upper mold base (3) and the top mold base (4) are provided with movable grooves corresponding to the positioning post (64), and a positioning tension spring (65) that is fixedly connected to the inner wall of the movable groove is movably sleeved on the positioning post (64). The vibration components on both sides are arranged circumferentially. The vibration components include a support rod (7) fixedly connected to the inner wall of one side of the bottom handle (31). An adjusting cylinder (75) and a toothed cylinder (71) meshing with the adjusting ring (62) are slidably engaged on the support rod (7). The bottom adjusting ring (62) has teeth on both sides corresponding to the toothed cylinder (71). The end of the adjusting cylinder (75) away from the support rod (7) is provided with a clearance groove and a buffer spring (76) is fixedly connected therein. The elastic force of the buffer spring (76) is greater than the elastic force of the positioning tension spring (65). A rotating shaft (8) is rotatably connected to the other side of the handle (31). The rotating shaft (8) is driven by a motor installed on the outer wall of the handle (31). A vibrating cylinder (81) is movably sleeved on the rotating shaft (8) and movably engaged with the inner wall of the toothed cylinder (71). A curved annular groove (82) with the ends connected is opened on the inner wall of the vibrating cylinder (81). A pin protrusion (83) is provided on the outer wall of the rotating shaft (8) and movably engaged with the curved annular groove (82).

2. The brake disc stacking mold according to claim 1, characterized in that, The L-shaped sprue (5) is circumferentially arranged on both the upper mold base (3) and the top mold base (4), and there are three of each. The L-shaped sprue (5) is offset from bottom to top, and the top of the L-shaped sprue (5) is horizontally inclined relative to the brake disc cavity (32).

3. A brake disc stacking mold according to claim 2, characterized in that, The inner wall of the gear cylinder (71) is rotatably connected to an adjusting tube (72) sleeved around the adjusting cylinder (75). The inner wall of the adjusting tube (72) is provided with an arc groove (73). The outer wall of the adjusting cylinder (75) is provided with a pin protrusion (77) that is movably engaged with the arc groove (73). The bottom of the adjusting tube (72) is fixedly connected to a clamping plate (74). The bottom of the gear cylinder (71) is provided with a swing groove corresponding to the clamping plate (74). Telescopic cylinders (9) are installed on both sides of the upper mold base (3) at the bottom. The telescopic end of the telescopic cylinder (9) is slidably connected to the side wall of the upper mold base (3). A protruding post one (91) and a protruding post two (92) are fixedly connected to the telescopic end of the telescopic cylinder (9). The protruding post one (91) is slidably engaged with the card plate (74). The bottom of the adjusting ring (62) has a slot that is movably engaged with the protruding post two (92).

4. A brake disc casting method, employing a brake disc stacking mold as described in any one of claims 1-3, characterized in that, Includes the following steps: S1. After the top mold base (4) is pressed, molten iron is poured in through the straight sprue (10), and flows into each brake disc cavity (32) through the split cavity (21) and each of the L-shaped sprues (5). After the molten iron cools, the used sand mold (2) is cleaned out through the sand cleaning port (14). S2. Control the operation of the vibration component and provide each of the ventilation slot plates (6) and the vibration mold base (11) with gradually increasing vibration force. The ventilation slot plates (6) and the brake disc automatically and safely demold based on the vibration force. At the same time, the sprue iron and each of the L-shaped sprues (5) and the straight sprue (10) automatically separate based on the vibration force. Under the action of vibration force, the sprue iron in each of the L-shaped sprues (5) breaks at the gate and separates from the brake disc in conjunction with the avoidance action of the elastic sealing component, and breaks at the bend. S3. Using an external cutting mechanism, cut the bottom of each L-shaped gating channel (5) and the gating iron of the straight gating channel (10) within the space occupied by the original sand mold (2) through the sand cleaning port (14) to separate them from each other. Then, control the vibration component to drive each ventilation slot plate (6) to completely move out of the brake disc cavity (32). S4. Remove the top mold base (4) and the upper mold base (3) from top to bottom, and remove each brake disc at the same time.

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