Polyhedral centrifugal casting grinding ball

Abstract

The utility model belongs to the technical field of grinding ball casting, and particularly relates to a polyhedral centrifugal casting grinding ball which comprises a base, a rotating motor and a supporting plate are sequentially and fixedly connected to the top of the base from left to right, a lower die is fixedly connected to an output shaft of the rotating motor, and an upper die is detachably and fixedly connected to the top of the lower die. A plurality of multi-surface forming grooves are formed in the lower mold and the upper mold, and an injection cavity is formed in the top of the lower mold. The device is reasonable in structural design, the upper mold and the lower mold can be periodically beaten through the beating plate which reciprocates left and right before the polyhedral grinding ball is subjected to rotary centrifugal forming and needs to be subjected to demolding, vibration is formed, the formed polyhedral grinding ball can be separated from the polyhedral forming groove under vibration, demolding operation in the later period is facilitated, and the production efficiency is improved. And a plurality of formed polyhedral grinding balls can be ejected upwards together through a plurality of ejection rods which move upwards, so that demolding is more convenient and efficient, and the using effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding ball casting, in particular to a polyhedron centrifugal casting grinding ball. Background Art

[0002] The production technology of casting grinding balls in the grinding industry, the specific grinding balls can be round balls or polyhedral balls, whether it is a round grinding ball or a polyhedral mother ball, the materials of the casting grinding balls are generally chromium series, isothermally quenched ductile iron, white cast iron, etc. Centrifugal casting is a casting method in which liquid metal is poured into a rotating mold, so that the liquid metal fills the mold and solidifies under the action of centrifugal force. In order to realize the above process, a centrifugal casting machine must be used to create the conditions for the rotation of the mold. According to the different spatial positions of the rotating axis of the mold, steel balls and cast balls made by vertical centrifugal casting machines are commonly used. Relatively speaking, the core structure of the grinding ball will be somewhat loose. Due to the existence of shrinkage feed risers and runners in casting production, the utilization rate of molten iron is relatively low, generally around 80% or even lower. By using the mold of horizontal rotating centrifugal casting grinding balls, the process flow of casting ball production can be greatly simplified, the process export rate of casting grinding balls can be improved, the organizational density of casting grinding balls can be improved, and the production cost of casting grinding balls can be reduced.

[0003] After searching: Patent number CN216263388U is a horizontal rotating centrifugal casting grinding ball mold device, which belongs to the field of mold technology, including a rotating device, the output end of the rotating device is fixedly connected to the lower surface of the lower mold, the upper surface of the lower mold is fixedly connected to two limit rods, the outer surfaces of the two limit rods are slidably connected to the same upper mold, the interior of the lower mold is provided with an injection cavity, the upper surface of the lower mold is fixedly connected to a molten iron conveying pipe, and the lower mold and the upper mold are provided with molding grooves on their respective sides close to each other.

[0004] However, the mold device for centrifugally cast grinding balls in the above-mentioned patent still has some shortcomings. The above-mentioned patent adopts the elastic force of the spring to eject the molded grinding balls. However, the molded metal grinding balls are easy to adhere to the molding grooves of the upper and lower molds, which is inconvenient to knock and vibrate them. It is difficult to push out the molded grinding balls only by the elastic force of the spring. If the elastic force of the elastic telescopic rod is large, it is more troublesome to press the upper mold down and fit the lower mold. Therefore, we propose a polyhedron centrifugally cast grinding ball to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above-mentioned shortcomings and proposes a polyhedron centrifugally cast grinding ball.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A polyhedral centrifugal casting grinding ball comprises a base, the top of the base is fixedly connected with a rotating motor and a support plate in sequence from left to right, a lower mold is fixedly connected to the output shaft of the rotating motor, the top of the lower mold is detachably fixedly connected to the upper mold, a plurality of multi-faceted forming grooves are provided on the lower mold and the upper mold, an injection cavity is provided on the top of the lower mold, a pouring pipe is fixedly connected to the top of the injection cavity, a plurality of injection ports are fixedly connected to the outer side of the injection cavity, the injection ports are connected to the multi-faceted forming grooves, an ejection demoulding component is arranged in the lower mold, a cover body is fixedly connected to one side of the support plate, and a knocking vibration component is arranged between the cover body and the support plate.

[0008] Preferably, the knocking vibration assembly includes a driving motor and a return spring fixedly connected to the inner wall of one side of the cover body, and an upper worm gear rotatably connected to the inner wall of the rear side of the cover body, an upper worm is fixedly connected to the output shaft of the driving motor, the upper worm is meshed with the upper worm gear, a fan-shaped gear is fixedly connected to the front side of the upper worm gear, one end of the return spring is fixedly connected to a tooth plate, the tooth plate is meshed with the fan-shaped gear, a knocking plate is fixedly connected to one side of the tooth plate, and the knocking plate is tangent to one side of the lower mold and the upper mold.

[0009] Preferably, a rectangular opening is opened on one side of the support plate, and the tooth plate is slidably sleeved in the rectangular opening.

[0010] Preferably, four screws are fixedly connected to the top of the lower mold, the upper mold is movably sleeved on the outside of the four screws, nuts are provided on the outer threaded sleeves of the screws, and the four nuts are movably abutted against the top of the upper mold.

[0011] Preferably, four insertion holes are provided on the top of the upper mold, and four screw rods are movably inserted into the corresponding insertion holes respectively.

[0012] Preferably, the ejection demolding assembly includes a lower worm rotatably connected to one side of the lower mold, and two lifting screws rotatably connected to the top inner wall and the bottom inner wall of the lower mold, the outer sides of the two lifting screws are fixedly sleeved with lower worm wheels, the lower worm is meshed with the two lower worm wheels, the outer side threads of the two lifting screws are sleeved with the same movable plate, and the top of the movable plate is fixedly connected with multiple ejector rods, and the multiple ejector rods correspond to the multi-sided molding grooves.

[0013] Preferably, one end of the lower worm extends to the outside of the lower mold and is fixedly connected to a hand wheel.

[0014] Preferably, one side of the hand wheel is threadedly connected with a screw, and the hand wheel is fixedly connected to one side of the lower mold by the screw.

[0015] In the utility model, the polyhedron centrifugally cast grinding ball is fixed on the lower mold by four screws and nuts during the centrifugal casting of the polyhedron grinding ball. The hot melt raw material is injected into the injection cavity and the injection port through the pouring pipe, and finally injected into the multiple polyhedron forming grooves. At the same time, the rotating motor is started to drive the upper and lower molds to rotate centrifugally. When demoulding is required after molding, in order to prevent the molded polyhedron grinding ball from adhering to the polyhedron forming grooves of the upper and lower molds, so that the upper mold cannot be separated, the driving motor is started at this time, and the driving motor drives the rotation of the upper worm, and the upper worm drives the rotation of the upper worm wheel and the fan gear. When the fan gear is meshed with the tooth plate, it will drive the tooth plate to move right and squeeze the reset spring. When the fan gear rotates to not mesh with the tooth plate, under the elastic force of the reset spring, the tooth plate moves left, and then drives the tooth plate and the knocking plate to periodically knock the upper and lower molds, so that they form vibrations. Under the vibration, the molded polyhedron grinding ball can be separated from the polyhedron forming groove.

[0016] In the utility model, the polyhedron centrifugal casting grinding ball is knocked and vibrated for a period of time, the driving motor is turned off, the nut is screwed off, the upper mold can be disassembled, and then the screw is loosened without fixing the hand wheel, and the lower worm is rotated by the hand wheel, the lower worm drives the synchronous rotation of the two lower worm wheels and the lifting screw rod, and the two lifting screw rods drive the moving plate and the multiple ejector rods to move upward, so that the multiple formed polyhedron grinding balls can be ejected upward together out of the polyhedron forming groove below, so that personnel can take them out one by one. After taking them out, the hand wheel is rotated in the opposite direction to make the ejector rod move down and reset, at this time the screw is aligned with the thread groove opened on the lower mold, and the screw is tightened to lock the hand wheel, so as to avoid the hand wheel rotating during knocking, vibration or rotation to affect the quality of the formed polyhedron grinding ball;

[0017] The utility model has a reasonable structural design. Before the polyhedron grinding ball needs to be demolded after being rotated and centrifugally formed, the knocking plate that reciprocates left and right can periodically knock the upper and lower molds to make them vibrate. Under the vibration, the molded polyhedron grinding ball can be separated from the polyhedron forming groove, which is beneficial to the later demolding operation. Through the multiple ejector rods that move upward, the multiple molded polyhedron grinding balls can be ejected upward together, making demolding more convenient and efficient, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a polyhedral centrifugal casting grinding ball proposed by the utility model;

[0019] Figure 2 A cross-sectional view of a polyhedral centrifugally cast grinding ball proposed by the utility model;

[0020] Figure 3 A three-dimensional diagram of a percussion vibration assembly of a polyhedron centrifugally cast grinding ball proposed by the utility model;

[0021] Figure 4 The utility model is a schematic structural diagram of the A part of a polyhedron centrifugally cast grinding ball.

[0022] In the figure: 1. base; 2. support plate; 3. rotating motor; 4. lower mold; 5. upper mold; 6. screw; 7. nut; 8. multi-faceted molding groove; 9. injection port; 10. injection cavity; 11. pouring tube; 12. moving plate; 13. cover body; 14. driving motor; 15. gear plate; 16. knocking plate; 17. reset spring; 18. sector gear; 19. upper worm wheel; 20. upper worm; 21. ejector rod; 22. lifting screw; 23. lower worm wheel; 24. lower worm; 25. hand wheel; 26. screw. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-4 A polyhedral centrifugal casting grinding ball comprises a base 1, the top of the base 1 is fixedly connected with a rotating motor 3 and a support plate 2 in sequence from left to right, a lower mold 4 is fixedly connected to the output shaft of the rotating motor 3, the top of the lower mold 4 is detachably fixedly connected with an upper mold 5, a plurality of multi-faceted forming grooves 8 are provided on the lower mold 4 and the upper mold 5, an injection cavity 10 is provided on the top of the lower mold 4, a pouring pipe 11 is fixedly connected to the top of the injection cavity 10, a plurality of injection ports 9 are fixedly connected to the outer side of the injection cavity 10, the injection ports 9 are connected to the multi-faceted forming grooves 8, an ejection demoulding component is arranged in the lower mold 4, a cover body 13 is fixedly connected to one side of the support plate 2, and a knocking vibration component is arranged between the cover body 13 and the support plate 2.

[0025] In the utility model, the knocking vibration assembly includes a driving motor 14 and a reset spring 17 fixedly connected to the inner wall of one side of the cover body 13, and an upper worm wheel 19 rotatably connected to the inner wall of the rear side of the cover body 13. The output shaft of the driving motor 14 is fixedly connected to an upper worm 20, which meshes with the upper worm wheel 19. The front side of the upper worm wheel 19 is fixedly connected to a sector gear 18. One end of the reset spring 17 is fixedly connected to a toothed plate 15, which meshes with the sector gear 18. One side of the toothed plate 15 is fixedly connected to a knocking plate 16, which is tangent to one side of the lower mold 4 and the upper mold 5. In order to prevent the polyhedral grinding balls after molding from adhering to the upper and lower molds, the knocking plate 16 is fixedly connected to the lower mold 4 and the upper mold 5. The upper mold 5 cannot be separated from the multi-faceted forming groove 8 of the mold. At this time, the drive motor 14 is started, and the drive motor 14 drives the rotation of the upper worm 20. The upper worm 20 drives the rotation of the upper worm wheel 19 and the fan gear 18. When the fan gear 18 is engaged with the tooth plate 15, it will drive the tooth plate 15 to move right and squeeze the reset spring 17. When the fan gear 18 rotates to no longer engage with the tooth plate 15, under the elastic force of the reset spring 17, the tooth plate 15 moves left, thereby driving the tooth plate 15 and the knocking plate 16 to periodically knock the upper and lower molds, causing them to vibrate. Under the vibration, the formed polyhedron grinding ball can be separated from the multi-faceted forming groove 8.

[0026] In the utility model, a rectangular opening is opened on one side of the support plate 2, and the tooth plate 15 is slidably sleeved in the rectangular opening, which can guide the tooth plate 15 to make its movement more stable.

[0027] In the utility model, four screw rods 6 are fixedly connected to the top of the lower mold 4, and the upper mold 5 is movably sleeved on the outside of the four screw rods 6. The outer threaded sleeves of the screw rods 6 are provided with nuts 7. The four nuts 7 are movably abutted against the top of the upper mold 5. The arrangement of the screw rods 6 and the nuts 7 facilitates the disassembly and assembly of the upper mold 5.

[0028] In the utility model, four insertion holes are provided on the top of the upper mold 5 , and the four screw rods 6 are movably inserted into the corresponding insertion holes respectively, so that the upper mold 5 can be inserted on the outer sides of the four screw rods 6 conveniently.

[0029] In the utility model, the ejection demoulding assembly includes a lower worm 24 rotatably connected to one side of the lower mold 4, and two lifting screws 22 rotatably connected to the top inner wall and the bottom inner wall of the lower mold 4. The outer sides of the two lifting screws 22 are fixedly sleeved with lower worm wheels 23, and the lower worm 24 is meshed with the two lower worm wheels 23. The outer thread sleeves of the two lifting screws 22 are provided with the same movable plate 12, and the top of the movable plate 12 is fixedly connected with multiple ejector rods 21, and the multiple ejector rods 21 correspond to the multi-faceted forming groove 8. The lower worm 24 is rotated, and the lower worm 24 drives the synchronous rotation of the two lower worm wheels 23 and the lifting screw 22. The two lifting screws 22 drive the movable plate 12 and the multiple ejector rods 21 to move upward, so that the multiple formed polyhedral grinding balls can be ejected upward together out of the multi-faceted forming groove 8 below, so that personnel can take them out one by one.

[0030] In the utility model, one end of the lower worm 24 extends to the outside of the lower mold 4 and is fixedly connected to a handwheel 25, one side of the handwheel 25 is threadedly connected to a screw 26, and the handwheel 25 is fixedly connected to one side of the lower mold 4 by the screw 26, so that the handwheel 25 can be easily rotated. At the same time, when demolding, the handwheel 25 and the lower worm 24 can be locked to avoid the handwheel 25 from rotating during knocking and vibration or rotation and centrifugation, thereby affecting the quality of the polyhedron grinding ball after molding.

[0031] In the utility model, when the polyhedron grinding ball is centrifugally cast, the upper mold 5 is fixed on the lower mold 4 by four screws 6 and nuts 7, and the hot melt raw material is injected into the injection cavity 10 and the injection port 9 through the pouring tube 11, and finally injected into the multiple polyhedral molding grooves 8. At the same time, the rotating motor 3 is started to drive the upper and lower molds to rotate centrifugally. When demolding is required after molding, in order to prevent the polyhedron grinding ball after molding from adhering to the polyhedral molding grooves 8 of the upper and lower molds, so that the upper mold 5 cannot be separated, the driving motor 14 is started at this time, and the driving motor 14 drives the rotation of the upper worm 20, and the upper worm 20 drives the rotation of the upper worm wheel 19 and the fan gear 18. When the fan gear 18 is meshed with the tooth plate 15, it will drive the tooth plate 15 to move right and squeeze the reset spring 17. When the fan gear 18 rotates to no longer mesh with the tooth plate 15, under the elastic force of the reset spring 17, the tooth plate 15 moves left, thereby driving the tooth plate 15 and the knocking plate 16 to periodically move. The upper and lower molds are struck to form vibrations, and under the vibration, the formed polyhedron grinding ball can be separated from the polyhedron forming groove 8. After the striking and vibration for a period of time, the drive motor 14 is turned off, the nut 7 is screwed off, and the upper mold 5 can be disassembled, and then the screw 26 is loosened without fixing the hand wheel 25. The lower worm 24 is rotated by the hand wheel 25, and the lower worm 24 drives the two lower worm wheels 23 and the lifting screw 22 to rotate synchronously. The two lifting screws 22 drive the moving plate 12 and the multiple ejector rods 21 to move upward, and the multiple formed polyhedron grinding balls can be ejected upward together out of the polyhedron forming groove 8 below, so that personnel can take them out one by one. After taking them out, the hand wheel 25 is rotated in the opposite direction to make the ejector rod move down and reset. At this time, the screw 26 is aligned with the threaded groove provided on the lower mold 4. The screw 26 is tightened to lock the hand wheel 25 to prevent the hand wheel 25 from rotating during striking and vibration or rotation to affect the quality of the formed polyhedron grinding ball.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A polyhedral centrifugal casting grinding ball, characterized in that: The invention comprises a base (1), the top of which is fixedly connected with a rotating motor (3) and a support plate (2) from left to right in sequence, a lower mold (4) is fixedly connected to the output shaft of the rotating motor (3), the top of the lower mold (4) is detachably fixedly connected with an upper mold (5), a plurality of multi-faceted molding grooves (8) are provided on the lower mold (4) and the upper mold (5), an injection cavity (10) is provided on the top of the lower mold (4), a pouring pipe (11) is fixedly connected to the top of the injection cavity (10), a plurality of injection ports (9) are fixedly connected to the outer side of the injection cavity (10), and the injection ports (9) are connected to the multi-faceted molding grooves (8), an ejection demoulding component is arranged in the lower mold (4), a cover body (13) is fixedly connected to one side of the support plate (2), and a knocking vibration component is arranged between the cover body (13) and the support plate (2).

2. The polyhedral centrifugal casting grinding ball according to claim 1, characterized in that: The knocking vibration assembly comprises a driving motor (14) and a return spring (17) fixedly connected to the inner wall of one side of the cover body (13), and an upper worm gear (19) rotatably connected to the inner wall of the rear side of the cover body (13); an upper worm (20) is fixedly connected to the output shaft of the driving motor (14), the upper worm (20) is meshed with the upper worm gear (19), a fan-shaped gear (18) is fixedly connected to the front side of the upper worm gear (19), one end of the return spring (17) is fixedly connected to a toothed plate (15), the toothed plate (15) is meshed with the fan-shaped gear (18), one side of the toothed plate (15) is fixedly connected to a knocking plate (16), and the knocking plate (16) is tangent to one side of the lower mold (4) and the upper mold (5).

3. The polyhedral centrifugal casting grinding ball according to claim 2, characterized in that: A rectangular opening is provided on one side of the support plate (2), and the tooth plate (15) is slidably sleeved in the rectangular opening.

4. The polyhedral centrifugal casting grinding ball according to claim 1, characterized in that: The top of the lower mold (4) is fixedly connected with four screw rods (6), the upper mold (5) is movably sleeved on the outside of the four screw rods (6), the outer thread sleeves of the screw rods (6) are provided with nuts (7), and the four nuts (7) are movably abutted against the top of the upper mold (5).

5. The polyhedral centrifugal casting grinding ball according to claim 4, characterized in that: The top of the upper mold (5) is provided with four insertion holes, and the four screw rods (6) are movably inserted into the corresponding insertion holes respectively.

6. The polyhedral centrifugal casting grinding ball according to claim 1, characterized in that: The ejection demoulding assembly comprises a lower worm (24) rotatably connected to one side of the lower mold (4), and two lifting screws (22) rotatably connected to the top inner wall and the bottom inner wall of the lower mold (4), the outer sides of the two lifting screws (22) are fixedly sleeved with lower worm wheels (23), the lower worm (24) is meshed with the two lower worm wheels (23), the outer sides of the two lifting screws (22) are threadedly sleeved with the same moving plate (12), the top of the moving plate (12) is fixedly connected with a plurality of ejector rods (21), and the plurality of ejector rods (21) correspond to the multi-faceted molding grooves (8).

7. The polyhedral centrifugal casting grinding ball according to claim 6, characterized in that: One end of the lower worm (24) extends to the outside of the lower mold (4) and is fixedly connected to a hand wheel (25).

8. The polyhedral centrifugal casting grinding ball according to claim 7, characterized in that: One side of the hand wheel (25) is threadedly connected with a screw (26), and the hand wheel (25) is fixedly connected to one side of the lower mold (4) through the screw (26).

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