Casting mold for nodular cast iron brake disc

Abstract

The utility model relates to the technical field of casting molds, and discloses a casting mold of a nodular cast iron brake disc, which comprises an upper support, a lower support, an electric cylinder and an air pump, placing cavities are arranged on the sides of the upper support and the lower support close to each other, and a brake disc upper mold is arranged in the placing cavity on the upper side through a pair of clamping components. A brake disc lower die is installed in the lower side containing cavity through the other pair of clamping assemblies. Annular cooling grooves are formed in the containing cavities. A supporting plate is fixedly installed at the push rod end of the electric cylinder, a pair of rubber pipes and a pair of reciprocating vibrators are fixedly installed on the supporting plate, a U-shaped bent pipe is installed between the ends, away from the brake disc upper mold, of the rubber pipes in a communicating mode, and one side of the U-shaped bent pipe is assembled with the output end of an air pump in a communicating mode through a hose. The brake disc upper die and the brake disc lower die can be replaced independently, so that the production cost is saved; and the brake disc casting is cooled and vibrated before being taken out, so that the convenience of taking-out operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, in particular to a casting mold for a ductile iron brake disc. Background Art

[0002] Ductile iron brake discs are widely used in the brake systems of various vehicles such as passenger cars, commercial vehicles, motorcycles and scooters. They have good heat dissipation performance, excellent wear resistance, high strength and toughness, and a stable friction coefficient.

[0003] The production process of ductile iron brake discs includes multiple links such as raw material preparation, smelting, casting, heat treatment, machining and quality inspection. Among them, the structure of the casting mold has a certain influence on the production efficiency. The casting mold in the prior art is installed on the conveyor at a fixed distance. The casting machine pours a certain amount of molten metal into the casting mold that has arrived at the position. After the ductile iron brake disc is cooled and formed, the mold is separated to take out the brake disc casting.

[0004] The existing brake disc mold cavity is directly opened in the upper and lower molds, and needs to be replaced as a whole after the mold cavity is worn out, which has a high manufacturing cost. In addition, during the removal process, the mold still has a high temperature, causing the brake disc casting to be tightened in the mold cavity and cannot be removed smoothly.

[0005] Therefore, in order to improve the above-mentioned problems, a casting mold for a ductile iron brake disc is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a casting mold for a ductile iron brake disc, which can save maintenance costs and improve the convenience of removing the brake disc casting by means of vibration and cooling, so as to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a casting mold for a ductile iron brake disc, comprising an upper bracket, a lower bracket, an electric cylinder and an air pump, wherein the upper bracket is located above the lower bracket, and a placement cavity is provided on the side where the upper bracket and the lower bracket are close to each other, an upper brake disc mold is installed in the placement cavity on the upper side through a pair of clamping assemblies, and a lower brake disc mold is installed in the placement cavity on the lower side through another pair of clamping assemblies; an annular cooling groove is provided in the placement cavity, and both sides of the upper bracket and the lower bracket are provided with An air delivery channel for connecting to the annular cooling groove is provided; a support plate is fixedly installed at the push rod end of the electric cylinder, a pair of rubber tubes and a pair of reciprocating vibrators are fixedly installed on the support plate, a U-shaped elbow is installed between the ends of the rubber tubes away from the upper mold of the brake disc, one side of the U-shaped elbow is connected and assembled with the output end of the air pump through a hose, the rubber tubes are respectively aligned with the air delivery channels on the same side, and the reciprocating vibrators are respectively aligned with the clamping components on the same side; a casting port is opened at the top center of the upper bracket.

[0008] Specifically, the clamping assembly includes pins and springs, the left and right sides of the upper bracket and the lower bracket are provided with pin holes, the upper mold of the brake disc and the lower mold of the brake disc are provided with positioning holes aligned with the pin holes, pins are inserted in the aligned pin holes and the positioning holes, the pins are sleeved with springs, the spring on the upper side is fixedly installed between the nail cap of the pin and the upper bracket, and the spring on the lower side is fixedly installed between the nail cap of the pin and the lower bracket.

[0009] Specifically, cooling fins are fixedly installed inside the annular cooling groove, and the cooling fins are evenly distributed around the circumference. The upper cooling fins abut against the upper mold of the brake disc, and the lower cooling fins abut against the lower mold of the brake disc.

[0010] Specifically, pins are fixedly installed at the four corners of the lower side of the upper bracket, and a groove for plugging and assembling with the pins is opened on the top of the lower bracket.

[0011] Specifically, positioning blocks are fixedly installed at the four corners of the lower side of the lower bracket.

[0012] Specifically, hanging handles are fixedly installed on the front and rear sides of the upper bracket and the lower bracket.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the brake disc upper mold and the brake disc lower mold are respectively installed in the upper bracket and the lower bracket through the clamping assembly, which can be easily replaced, avoiding the need for overall replacement after the mold cavity is damaged, and saving production costs;

[0014] Before the brake disc casting is taken out, it can pass through structures such as an air pump, an air supply channel, and annular cooling grooves to accelerate the cooling of the brake disc upper mold and the brake disc lower mold, reduce the thermal expansion size of the brake disc casting, and the vibration generated by the reciprocating vibrator can be directly transmitted to the brake disc upper mold and the brake disc lower mold through the pins, which is beneficial to the separation of the brake disc casting from the mold cavity and improves the convenience of the removal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic front view of the structure of the utility model;

[0016] Figure 2 This is a structural schematic diagram of the support plate of the utility model;

[0017] Figure 3 This is a schematic structural perspective view of the upper support of the utility model;

[0018] Figure 4 It is a schematic cross-sectional view of the structure of the upper support of the utility model;

[0019] Figure 5 It is a schematic cross-sectional view of the structure of the lower bracket of the utility model;

[0020] Figure 6 It is a schematic cross-sectional view of the structure of the clamping assembly of the utility model.

[0021] In the figure: 1. electric cylinder, 2. air pump, 3. hose, 4. U-shaped bend pipe, 5. support plate, 6. rubber tube, 7. reciprocating vibrator, 8. clamping assembly, 81. pin, 82. spring, 9. upper bracket, 10. casting port, 11. air delivery channel, 12. brake disc upper mold, 13. brake disc lower mold, 14. lower bracket, 15. annular cooling groove, 16. groove, 17. pin, 18. cooling plate, 19. positioning block, 20. lifting handle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 6 The utility model provides a casting mold for a ductile iron brake disc, comprising an upper bracket 9, a lower bracket 14, an electric cylinder 1 and an air pump 2, the upper bracket 9 is located above the lower bracket 14, and a placement cavity is opened on the side where the upper bracket 9 and the lower bracket 14 are close to each other, a brake disc upper mold 12 is installed in the upper placement cavity through a pair of clamping components 8, and a brake disc lower mold 13 is installed in the lower placement cavity through another pair of clamping components 8; through the setting of the clamping components 8, the installation and replacement of the brake disc upper mold 12 in the upper bracket 9 can be facilitated, and the installation and replacement of the brake disc lower mold 13 in the lower bracket 14 can also be facilitated, so that different types of ductile iron brake discs can be flexibly manufactured.

[0024] An annular cooling groove 15 is provided in the placement cavity, and air supply channels 11 for connecting the annular cooling groove 15 are provided on both sides of the upper bracket 9 and the lower bracket 14; the air supply channels 11 on both sides are respectively used for inputting and outputting cooling air, and the air in the annular cooling groove 15 can be evenly distributed on one side of the brake disc upper mold 12 and the brake disc lower mold 13, thereby improving the cooling effect and uniformity.

[0025] A support plate 5 is fixedly installed on the push rod end of the electric cylinder 1, and a pair of rubber tubes 6 and a pair of reciprocating vibrators 7 are fixedly installed on the support plate 5. The support plate 5 is vertically arranged, and the rubber tube 6 and the reciprocating vibrator 7 are horizontally arranged. A U-shaped elbow 4 is installed between the ends of the rubber tube 6 away from the upper mold 12 of the brake disc. One side of the U-shaped elbow 4 is connected and assembled with the output end of the air pump 2 through a hose 3. The rubber tubes 6 are respectively aligned with the air delivery channel 11 on the same side, and the reciprocating vibrators 7 are respectively aligned with the clamping components 8 on the same side; the electric cylinder 1 is used for horizontally reciprocating the support plate 5 and the rubber tube 6 and reciprocating vibrator 7 thereon. When the electric cylinder 1 extends the push rod, the rubber tube 6 can be pressed against the side walls of the upper bracket 9 and the lower bracket 14, and aligned and communicated with the gas transmission channel 11, and the reciprocating vibrator 7 is pressed against the clamping assembly 8. In addition, when the electric cylinder 1 retracts the push rod, the rubber tube 6 is separated from the upper bracket 9 and the lower bracket 14, and the reciprocating vibrator 7 is separated from the clamping assembly 8. When the air pump 2 is working, high-pressure gas can be input into the rubber tube 6 through the hose 3 and the U-shaped elbow 4.

[0026] A pouring port 10 is provided at the top center of the upper bracket 9 . The upper brake disc mold 12 and the lower brake disc mold 13 have a ductile iron brake disc mold cavity when they are buckled together. The molten metal enters the ductile iron brake disc mold cavity through the pouring port 10 .

[0027] See also Figure 6 The clamping assembly 8 includes a pin 81 and a spring 82. Pin holes are provided on the left and right sides of the upper bracket 9 and the lower bracket 14. The brake disc upper mold 12 and the brake disc lower mold 13 are provided with positioning holes aligned with the pin holes. Pins 81 are inserted in the aligned pin holes and the positioning holes. The pins 81 are sleeved with springs 82. The upper spring 82 is fixedly installed between the nail cap of the pin 81 and the upper bracket 9, and the lower spring 82 is fixedly installed between the nail cap of the pin 81 and the lower bracket 14; the spring 82 enables the pin 81 to have a force to approach the positioning hole, which is conducive to clamping, and when the pin 81 is pulled out, the brake disc upper mold 12 and the brake disc lower mold 13 can be separated and disassembled, which is convenient to use.

[0028] See also Figure 3 A cooling fin 18 is fixedly installed inside the annular cooling groove 15. The cooling fins 18 are evenly distributed around the circumference. The upper cooling fins 18 abut against the upper mold 12 of the brake disc, and the lower cooling fins 18 abut against the lower mold 13 of the brake disc. The cooling fins 18 can increase the contact area with the internal flowing air and further improve the cooling effect.

[0029] Pins 17 are fixedly installed at the four corners of the lower side of the upper bracket 9, and a groove 16 for plugging and assembling with the pins 17 is opened on the top of the lower bracket 14; when the upper bracket 9 and the lower bracket 14 are buckled, the pins 17 are plugged into the grooves 16 to improve the buckling accuracy.

[0030] Positioning blocks 19 are fixedly installed at the four corners of the lower side of the lower bracket 14, which are convenient for plugging and installing with the positioning grooves on the conveyor, and play a role in positioning and spacing each mold.

[0031] In addition, the upper bracket 9 and the lower bracket 14 are both fixedly mounted with hanging handles 20 on their front and rear sides, and the hanging handles 20 are used to lift and transfer the upper bracket 9 and the lower bracket 14 .

[0032] Working principle:

[0033] The matching brake disc upper mold 12 and brake disc lower mold 13 are replaced according to the type of ductile iron brake disc to be produced, and are quickly installed in the upper bracket 9 and the lower bracket 14 respectively through the clamping assembly 8.

[0034] The electric cylinder 1 and the air pump 2 are installed on the frame on one side of the conveyor. After the lower bracket 14 is placed equidistantly through the positioning block 19, the upper bracket 9 is installed by the crane. At this time, the pin 17 is plugged into the groove 16 for convenient and accurate buckling.

[0035] The conveyor transports the mold at a fixed distance, and first reaches the casting machine to pour the molten metal. During the continuous conveying process of the conveyor, the molten metal is cooled and solidified by the fan. After the brake disc casting is formed, when the mold reaches the electric cylinder 1 in turn, the electric cylinder 1 extends the push rod to align the rubber tube 6 with the air delivery channel 11, and the reciprocating vibrator 7 is against the clamping component 8. When the air pump 2 is working, cooling air can be introduced into the annular cooling groove 15 through the hose 3, the U-shaped elbow 4, the rubber tube 6, and the air delivery channel 11, and the air is discharged from the air delivery channel 11 on the other side after heat exchange, thereby accelerating the cooling effect of the brake disc upper mold 12, the brake disc lower mold 13 and the brake disc casting from the inside. At the same time, the reciprocating vibrator 7 generates vibration, which is directly transmitted to the brake disc upper mold 12 and the brake disc lower mold 13 through the pin 81, which is conducive to the separation of the brake disc casting from the mold cavity, so that when the upper bracket 9 is opened later, the brake disc casting can be quickly taken out.

[0036] If the mold cavities in the brake disc upper mold 12 and the brake disc lower mold 13 are damaged after being used multiple times, they can be replaced separately, and the upper bracket 9 and the lower bracket 14 can continue to be used, which can save maintenance costs.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A casting mold for a ductile iron brake disc, characterized in that: The invention comprises an upper bracket (9), a lower bracket (14), an electric cylinder (1) and an air pump (2), wherein the upper bracket (9) is located above the lower bracket (14), and a placement cavity is provided on the side where the upper bracket (9) and the lower bracket (14) are close to each other, and a brake disc upper mold (12) is installed in the upper placement cavity through a pair of clamping components (8), and a brake disc lower mold (13) is installed in the lower placement cavity through another pair of clamping components (8); an annular cooling groove (15) is provided in each placement cavity, and an air delivery channel (11) for connecting the annular cooling groove (15) is provided on both sides of the upper bracket (9) and the lower bracket (14). A support plate (5) is fixedly mounted on the push rod end of the electric cylinder (1), and a pair of rubber tubes (6) and a pair of reciprocating vibrators (7) are fixedly mounted on the support plate (5); a U-shaped elbow (4) is connected and mounted between the ends of the rubber tube (6) away from the brake disc upper mold (12); one side of the U-shaped elbow (4) is connected and assembled with the output end of the air pump (2) through a hose (3); the rubber tubes (6) are respectively aligned with the air delivery channels (11) on the same side, and the reciprocating vibrators (7) are respectively aligned with the clamping components (8) on the same side; a casting port (10) is opened at the top center of the upper bracket (9).

2. The casting mold for the ductile iron brake disc according to claim 1, characterized in that: The clamping assembly (8) comprises a pin (81) and a spring (82). The upper bracket (9) and the lower bracket (14) are provided with pin holes on their left and right sides. The brake disc upper mold (12) and the brake disc lower mold (13) are provided with positioning holes aligned with the pin holes. The aligned pin holes and positioning holes are both inserted with pins (81). The pins (81) are sleeved with springs (82). The upper spring (82) is fixedly mounted between the pin cap of the pin (81) and the upper bracket (9), and the lower spring (82) is fixedly mounted between the pin cap of the pin (81) and the lower bracket (14).

3. The casting mold for the ductile iron brake disc according to claim 1, characterized in that: A cooling fin (18) is fixedly mounted inside the annular cooling groove (15), and the cooling fins (18) are evenly distributed around the circumference, with the upper cooling fins (18) abutting against the upper mold (12) of the brake disc, and the lower cooling fins (18) abutting against the lower mold (13) of the brake disc.

4. The casting mold for a ductile iron brake disc according to claim 1, characterized in that: Pins (17) are fixedly mounted at the four corners of the lower side of the upper bracket (9), and a groove (16) for plugging and assembling with the pins (17) is provided on the top of the lower bracket (14).

5. The casting mold for the ductile iron brake disc according to claim 1, characterized in that: Positioning blocks (19) are fixedly mounted at the four lower corners of the lower bracket (14).

6. The casting mold for a ductile iron brake disc according to claim 1, characterized in that: Hanging handles (20) are fixedly mounted on both the front and rear sides of the upper bracket (9) and the lower bracket (14).

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