CN216226905U - A grinding ball metal type direct casting production line - Google Patents

Abstract

The utility model discloses a grinding ball metal mold direct casting production line which comprises a circulation line and a ball mold, wherein the ball mold is a metal mold; the circulating line is of a rectangular structure, and pushing pieces are arranged at the corners of the circulating line; the circulating line comprises two conveying rails and two motorized rails, and the two motorized rails are respectively arranged at two ends of the conveying rails; a box unpacking machine, a casting discharging machine, a first overturning machine, a second overturning machine and a box closing machine are sequentially arranged on a conveying track along the conveying direction, and a mold cleaning section, a lower core section and a spraying section are sequentially arranged between the first overturning machine and the second overturning machine; a casting machine is arranged on the other conveying track, and a cooling section is arranged at the outlet end of the casting machine; the ball mould includes fixed die body, can dismantle on the fixed die body and be connected with removable inner core, and removable inner core middle part can be dismantled and be connected with the sprue core, the die cavity intercommunication on sprue core and the removable inner core. The problems that the mold replacement of the existing grinding ball production line is difficult, the abrasion and the breakage rate of the produced grinding balls are high, solid waste is discharged more, and the time is consumed for replacing the mold are solved.

Description

A grinding ball metal type direct casting production line

technical field

The utility model relates to the technical field of casting production line equipment, in particular to a direct casting production line for grinding ball metal molds.

Background technique

Sand-covered iron mold is a grinding ball casting process that has been used more in recent years. It is to inject resin sand into the gap between the heated pattern and the iron mold with a mold injection machine, and the tree finger sand is heated and solidified to form a layer of 6 A crust with a thickness of millimeters to 8 mm is adhered to the iron mold to form an iron shell dry casting mold. The sand-coated cavity of the iron mold has high hardness and good rigidity, and can resist the graphitization expansion force during the solidification of ductile iron. Therefore, a dense casting can be obtained without or with a smaller riser. In addition, the iron mold covered with sand is a dry mold, which avoids factors such as sand loss, pores, and expansion boxes that cause waste products.

The traditional sand-covered production line for grinding ductile iron molds needs to heat the sand box and the electric heating mold to about 180 °C, and shoot the sand into the upper and lower boxes and the corresponding electric heating molds through the sand shooting machine to obtain the corresponding sand mold, and the online mold is single species. To replace the mold, it is necessary to lift all the molds of the entire production line with a crane, and a large number of manual hoisting of the iron sand box is required, and the electric heating mold corresponding to the iron sand box is replaced. The compactness of the grinding balls cast by the iron mold sand coating production line is insufficient, the wear and breakage rates are high, and a large amount of solid waste needs to be treated.

Utility model content

The purpose of the utility model is to provide a direct casting production line for grinding ball metal type, so as to solve the problems of the difficulty of changing the mold of the existing grinding ball production line, the high wear and crushing rate of the produced grinding ball, the discharge of solid waste and the time-consuming replacement of the mold. .

In order to achieve the above purpose, the utility model provides the following scheme: the utility model provides a direct casting production line for grinding ball metal molds, including a circulation line and a ball mold placed on the circulation line, and the ball mold is used for casting and grinding. The ball, the ball mold is a metal mold; the circulation line is a rectangular structure, and the corners of the circulation line are equipped with push pieces; the circulation line includes two conveying rails and two motorized rails, and the two motorized rails are respectively Installed at both ends of the conveying track; a case opening machine, a casting machine, a first inversion machine, a second inversion machine and a case closing machine are sequentially arranged on the conveying rail along the conveying direction, and the first inversion machine The conveying track between the second turning machine is provided with a mold cleaning section, a lower core section and a spraying section in sequence along the conveying direction; another conveying track is provided with a pouring machine, and the outlet end of the pouring machine is provided with a pouring machine. A cooling section is arranged on the conveying track; the ball mold includes a fixed mold body, a replaceable inner core is detachably connected to the fixed mold body, and a sprue core is detachably connected to the middle of the replaceable inner core, The sprue core communicates with a mold cavity on the replaceable core.

Preferably, lift tables are installed at both ends of the motorized track, the lift tables at both ends of the conveying track are on the same straight line as the conveying track, and the pushing members are arranged corresponding to the lift tables.

Preferably, the conveying track is composed of several sections of roller tables connected end to end, and the several sections of the roller tables are all installed on the roller table support.

Preferably, the fixed mold body includes an upper mold half and a lower mold half, the replaceable inner core includes an upper mold core and a lower mold core, and both the upper mold half and the lower mold half are provided with installation grooves, The upper mold core and the lower mold core are respectively detachably connected to the upper mold half and the lower mold half through the installation groove; the middle part of the upper mold core and the middle part of the lower mold core are provided with a runner hole through which the sprue core can be detachably installed in the replaceable inner core; a number of hemispherical cavities are opened on the upper mold core and the lower mold core, A plurality of the hemispherical cavities are arranged in a circular array, two adjacent hemispherical cavities are communicated through a flow channel, the hemispherical cavities on the upper mold core and the hemispherical cavities on the lower mold core The hemispherical mold cavity is correspondingly arranged; the sprue core is provided with a communication hole, and the sprue core communicates with the mold cavity in the replaceable inner core through the communication hole.

Preferably, the sprue core includes an upper mold sleeve and a lower mold sleeve, and the upper mold sleeve and the lower mold sleeve are respectively mounted on the upper mold core and the lower mold core through the sprue hole. ; Both the bottom end of the upper die sleeve and the top end of the lower die sleeve are provided with grooves, and the communication hole is composed of the groove on the upper die sleeve and the groove on the lower die sleeve. .

Preferably, the lower mold core is fixedly connected with several positioning posts, the upper mold core is provided with several positioning holes, and the positioning posts are arranged correspondingly with the positioning holes.

Preferably, the bottom half of the lower mold is provided with a through hole, and the through hole communicates with the installation groove.

Compared with the prior art, the utility model discloses the following technical effects:

1. The ball mold of the utility model adopts all-metal material, and the cooling speed is fast, the internal structure of the produced grinding ball is dense, and there is no shrinkage cavity and shrinkage porosity; both high hardness and high toughness are combined.

2. Compared with the traditional semi-automatic ball grinding line produced by sand-covered iron mold, the ball mold cavity of the utility model has no molding sand, and the waste sand discharge is reduced by 80%.

3. To produce grinding balls of different specifications, only the replaceable inner core of the ball mold needs to be replaced, and the overall ball mold does not need to be replaced. The operation time is shortened by 90%. The metal ball mold cools faster than the sand-coated ball mold, and the production efficiency is increased by more than 20%. .

4. The utility model saves the sand blasting equipment, shortens the production line by 30%, and reduces the equipment cost.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only of the present invention. For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the structural representation of the utility model grinding ball metal type direct casting production line;

Fig. 2 is the structural schematic diagram of the top view (a) and bottom view (b) of the ball mold;

Fig. 3 is the structural representation of the upper mold half;

Fig. 4 is the structural representation of the lower half mold;

Among them, the unpacking machine-1, the first turning machine-2, the mold cleaning section-3, the lower core section-4, the spraying section-5, the second turning machine-6, the box closing machine-7, the motor track-8, Pouring machine-9, cooling section-10, casting machine-11, conveying track-12, lifting table-13, pushing parts-14, upper half-mold-15, lower half-mold-16, upper core-17, lower Mold core-18, hemispherical cavity-19, upper mold sleeve-20, lower mold sleeve-21, positioning post-22, positioning hole-23.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In order to make the above objects, features and advantages of the present utility model more clearly understood, the present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

The utility model provides a direct casting production line for grinding ball metal molds, which comprises a circulation line and a ball mold placed on the circulation line. The ball mold is used for casting grinding balls, and the material of the ball mold is HT150; The corners are equipped with push pieces 14, and the push pieces 14 can be hydraulic cylinders; the circulation line includes two conveying rails 12 and two motorized rails 8, and the four pushing members 14 are respectively related to the conveying directions of the two conveying rails 12 and the two motorized rails 8. Correspondingly, the conveying track 12 is composed of several roller tables connected end to end, each roller table is 4000mm long, and is made of Q235 steel by split welding. Several roller tables are installed on the roller table bracket, and the motorized track 8 has its own power. device; two motorized rails 8 are respectively installed on both ends of the conveying rail 12; a conveying rail 12 is provided with a case unpacking machine 1, a casting machine 11, a first turning machine 2, a second turning machine 6 and a closing machine 12 along the conveying direction. The box machine 7, the conveying track 12 between the first turning machine 2 and the second turning machine 6 are sequentially provided with a mold cleaning section 3, a lower core section 4 and a spraying section 5 along the conveying direction; another conveying track 12 is provided with The pouring machine 9, a cooling section 10 is provided on the conveying track 12 at the outlet end of the pouring machine 9; the ball mold includes a fixed mold body, and a replaceable inner core is detachably connected to the fixed mold body, and the middle of the replaceable inner core is detachably connected with a direct casting The sprue core communicates with the cavity on the replaceable inner core.

Further, when the track is replaced for the ball mold, in order to avoid mechanical damage to the ball mold under the action of the pusher 14, a lifting platform 13 is installed at both ends of the motorized track 8, and the lifting platform 13 located at both ends of the conveying track 12 is connected to the conveyer. The rails 12 are on the same straight line, and the pusher 14 is arranged corresponding to the lifting platform 13 . The use of the lift table 13 can create a height difference between the conveying track 12 and the motorized track 8, which is convenient for the ball mold to replace the track and avoids mechanical damage to the ball mold.

Further, in order to improve production efficiency, the fixed mold body includes an upper mold half 15 and a lower mold half 16, the replaceable inner core includes an upper mold core 17 and a lower mold core 18, and both the upper mold half 15 and the lower mold half 16 are provided with Installation groove, the upper mold core 17 and the lower mold core 18 are detachably connected to the upper mold half 15 and the lower mold half 16 respectively through the installation groove; the middle part of the upper mold core 17 and the middle part of the lower mold core 18 are provided with runner holes, which are straight The runner core is detachably installed in the replaceable inner core through the runner hole; the upper mold core 17 and the lower mold core 18 are both provided with several hemispherical mold cavities 19, and the several hemispherical mold cavities 19 are arranged in a circular array, The two adjacent hemispherical mold cavities 19 are communicated through the flow channel, and the hemispherical mold cavity 19 on the upper mold core 17 and the hemispherical mold cavity 19 on the lower mold core 18 are arranged correspondingly; The sprue core communicates with the mold cavity in the replaceable inner core through the communication hole. When producing grinding balls of different specifications, only the inner core of the ball mold needs to be replaced, and the overall ball mold does not need to be replaced, which greatly shortens the operation time and improves the production efficiency.

To further improve production efficiency, multiple replaceable mold cores can be installed on the fixed mold body.

Further, in order to facilitate the assembly of the ball mold, the sprue core includes an upper mold sleeve 20 and a lower mold sleeve 21, and the upper mold sleeve 20 and the lower mold sleeve 21 are respectively installed on the upper mold core 17 and the lower mold core 18 through the runner holes. Upper; the bottom end of the upper mold sleeve 20 and the top end of the lower mold sleeve 21 are provided with grooves, and the communication hole is composed of the grooves on the upper mold sleeve 20 and the grooves on the lower mold sleeve 21 .

Further, in order to improve the assembly efficiency of the ball mold and prevent the occurrence of wrong molds, a number of positioning posts 22 are fixedly connected to the lower mold core 18, and a number of positioning holes 23 are opened on the upper mold core 17. The holes 23 are correspondingly arranged.

Further, in order to facilitate demolding, a through hole is opened at the bottom of the lower half mold 16, and the through hole communicates with the installation groove.

The working process of the grinding ball metal mold direct casting production line provided by the utility model is as follows: 1. Close the upper half mold 15 and the lower half mold 16 of each specification, lift it with a crane, and place it on the conveying track 12 at the inlet end of the unpacking machine 1. 2. Use a hydraulic cylinder to push the ball mold to the first turning machine 2, and turn the upper half mold 15 over to make The parting surface is facing up; 3. Use the hydraulic cylinder to push the ball mold to the mold cleaning section 3 for mold cleaning; 4. Use the hydraulic cylinder to push the ball mold to the lower core section 4, and the corresponding sprue will be manually or robotically moved. Put the core into the runner hole; 5. Use the hydraulic cylinder to push the ball mold to the spraying section 5, and spray paint on the cavity; 6. Use the hydraulic cylinder to push the ball mold to the second case turning machine, and turn the upper half mold 15 over to make The parting surface is facing down; 7. Use the hydraulic cylinder to push the ball mold to the box closing machine 7, and close the upper half mold 15 and the lower half mold 16 in the center to realize mold closing; 8. Use the hydraulic cylinder to close the ball after mold closing The mold is pushed to the motorized track 8 by the conveying track 12; 9. The ball mold is pushed by the hydraulic cylinder to be transported to the pouring machine 9, and the molten iron is injected into the cavity of the ball mold through the sprue core; 10. The ball mold filled with molten iron is pushed by the hydraulic cylinder To the cooling section 10, to realize the cooling of the molten iron after casting; 11. Use the hydraulic cylinder to push the ball mold with the grinding balls from the conveying track 12 to the motorized track 8; 12. Use the hydraulic cylinder and the motorized roller table to push the balls containing the grinding balls. The mold is pushed to the unpacking machine 1, the manipulator vertically separates the upper half mold 15 and the lower half mold 16, the ball ejector grasps the ball mold, and under the action of hydraulic pressure, separates the ball mold from the sprue core and the grinding ball; the grinding ball enters Inside the casting barrel. By repeating the above steps, the continuous production of grinding balls can be realized.

In the direct casting production line for grinding ball metal molds provided by the utility model, the dwell time of the ball mold in each section of the circulating line is controlled according to the operating displacement of the hydraulic cylinder and the motorized rail 8 on the production line and the unit speed of the operation, thereby improving the controllability of production. . And it only needs to replace different types of ball molds to realize the production of various types of grinding balls at the same time.

In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present utility model, not Indicates or implies that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention.

The above-mentioned embodiments are only to describe the preferred mode of the present invention, and do not limit the scope of the present invention. Under the premise of not departing from the design spirit of the present invention, those of ordinary skill in the art can make the technical solutions of the present invention. Various deformations and improvements made shall fall within the protection scope determined by the claims of the present utility model.

Claims (7)

1. A grinding ball metal mold direct casting production line is characterized by comprising a circulating line and a ball mold placed on the circulating line, wherein the ball mold is used for casting a grinding ball and is a metal mold; the circulating line is of a rectangular structure, and pushing pieces (14) are mounted at the corners of the circulating line; the circulating line comprises two conveying rails (12) and two motorized rails (8), and the two motorized rails (8) are respectively arranged at two ends of the conveying rails (12); a box unpacking machine (1), a casting discharging machine (11), a first turnover machine (2), a second turnover machine (6) and a box closing machine (7) are sequentially arranged on one conveying track (12) along the conveying direction, and a mold cleaning section (3), a lower core section (4) and a spraying section (5) are sequentially arranged on the conveying track (12) between the first turnover machine (2) and the second turnover machine (6) along the conveying direction; a casting machine (9) is arranged on the other conveying track (12), and a cooling section (10) is arranged on the conveying track (12) at the outlet end of the casting machine (9); the ball mould comprises a fixed mould body, a replaceable inner core is detachably connected to the fixed mould body, a sprue core is detachably connected to the middle of the replaceable inner core, and the sprue core is communicated with a mould cavity in the replaceable inner core.

2. The grinding ball metal type direct casting production line of claim 1, characterized in that both ends of the motorized rail (8) are provided with lifting platforms (13), the lifting platforms (13) at both ends of the conveying rail (12) are in the same line with the conveying rail (12), and the pushing members (14) are arranged corresponding to the lifting platforms (13).

3. The grinding ball metal mold direct casting production line according to claim 1, characterized in that the conveying track (12) is composed of a plurality of sections of roller tables connected end to end, and the plurality of sections of roller tables are all installed on a roller table support.

4. The grinding ball metal mold direct casting production line of claim 1, characterized in that the fixed mold body comprises an upper mold half (15) and a lower mold half (16), the replaceable inner core comprises an upper mold core (17) and a lower mold core (18), mounting grooves are formed in the upper mold half (15) and the lower mold half (16), and the upper mold core (17) and the lower mold core (18) are detachably connected to the upper mold half (15) and the lower mold half (16) through the mounting grooves respectively; the middle parts of the upper mold core (17) and the lower mold core (18) are respectively provided with a runner hole, and the sprue core is detachably arranged in the replaceable inner core through the runner holes; the upper mold core (17) and the lower mold core (18) are respectively provided with a plurality of hemispherical mold cavities (19), the hemispherical mold cavities (19) are arranged in a circular array, two adjacent hemispherical mold cavities (19) are communicated through a flow passage, and the hemispherical mold cavities (19) on the upper mold core (17) are correspondingly arranged with the hemispherical mold cavities (19) on the lower mold core (18); the sprue core is provided with a communicating hole and is communicated with the die cavity in the replaceable inner core through the communicating hole.

5. The grinding ball metal type direct casting line according to claim 4, characterized in that the sprue core comprises an upper die case (20) and a lower die case (21), the upper die case (20) and the lower die case (21) being mounted on the upper die core (17) and the lower die core (18) through the sprue hole, respectively; grooves are formed in the bottom end of the upper die sleeve (20) and the top end of the lower die sleeve (21), and the communicating hole is formed by the groove in the upper die sleeve (20) and the groove in the lower die sleeve (21).

6. The grinding ball metal mold direct casting production line of claim 4, characterized in that a plurality of positioning columns (22) are fixedly connected to the lower mold core (18), a plurality of positioning holes (23) are formed in the upper mold core (17), and the positioning columns (22) are arranged corresponding to the positioning holes (23).

7. The grinding ball metal mold direct casting production line of claim 4, characterized in that the bottom of the lower half mold (16) is provided with a through hole, and the through hole is communicated with the mounting groove.

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