Multi-slider core-pulling die-casting mold

Abstract

The utility model belongs to die casting die technical field, concretely relates to a kind of multi-sliding block core-pulling die casting die, including bottom die, the top of bottom die is equipped with mounting groove, multiple centripetal sliders are arranged in the circumferential direction in mounting groove, the centripetal slider has arc working surface, multiple centripetal sliders can be radially synchronous sliding and form circular cavity by surrounding, for the clutch driving disc component is primarily die casting forming;The installation cavity is equipped with the driving mechanism for driving multiple centripetal sliders radial movement in the installation cavity, which is located below mounting groove inside bottom die;The center of circular cavity is equipped with first stripping column.The utility model, multiple components linkage can be realized, structure design is reasonable, stable and reliable in operation, effectively solve the existing die sliding block poor synchronism, stripping complex problem, substantially improve the forming precision and production efficiency of clutch driving disc, with significant practical value and popularization prospect.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, specifically relating to a multi-slider core-pulling die casting mold. Background Technology

[0002] As a core component of the automotive transmission system, the clutch drive disc typically has a circular body and multiple evenly distributed holes, requiring extremely high molding precision and surface quality. Currently, the die-casting of clutch drive discs mainly relies on traditional core-pulling die-casting molds, but existing technology has the following shortcomings: The centripetal slider drive mechanism is complex and often uses an independent drive method, which leads to asynchronous radial movement of the slider, low cavity enclosure accuracy, and easily causes defects such as uneven sidewall thickness and excessive flash in the product. The demolding mechanism and the slider drive mechanism are independent of each other, requiring multiple power sources for control. The operation process is cumbersome, the demolding efficiency is low, and the product is prone to deformation or jamming due to uneven demolding force. Poor component linkage during cavity positioning and demolding results in insufficient equipment stability, high maintenance costs, and difficulty in meeting the needs of large-scale production. Utility Model Content

[0003] The purpose of this invention is to provide a multi-slider core-pulling die-casting mold that can achieve multi-component linkage, has a reasonable structural design, and is stable and reliable in operation. It effectively solves the problems of poor slider synchronization and complex demolding in existing molds, and greatly improves the forming accuracy and production efficiency of the clutch drive disc. It has significant practical value and promotion prospects.

[0004] The specific technical solution adopted by this utility model is as follows: A multi-slider core-pulling die-casting mold includes a bottom mold, the top of which is provided with an installation groove. Multiple radial sliders are arranged circumferentially in the installation groove. Each radial slider has an arc-shaped working surface. The multiple radial sliders can slide synchronously in the radial direction and enclose to form a circular cavity for preliminary die-casting of a clutch drive disc component. The bottom mold has an installation cavity located below the installation groove, and the installation cavity is equipped with a drive mechanism for driving multiple centripetal sliders to move radially. The circular cavity has a first demolding column at its center. Inside the circular cavity, multiple second demolding columns are arranged at equal angular intervals with the first demolding column as the center. After die casting is completed, the driving mechanism can drive the first and second demolding columns to move downwards to achieve demolding from the clutch drive disc.

[0005] The driving mechanism includes a hexagonal prism disposed in the mounting cavity, and a movable tube is slidably fitted onto the top of the hexagonal prism. A rotating disk is rotatably mounted inside the mounting cavity, and a first through hole is provided in the middle of the rotating disk for the moving tube to pass through.

[0006] The outer wall of the movable tube has two first limiting grooves, and the inner side of the first through hole is fixedly provided with a first limiting slider that cooperates with the first limiting groove.

[0007] The bottom of the mounting cavity is provided with a plurality of hydraulic cylinders connected to the rotating disk along the circumferential direction. The hydraulic cylinders are connected to the rotating disk and the mounting cavity through a ball joint structure.

[0008] The top of the moving tube is fixedly connected to a mounting plate, and the first demolding column and the second demolding column are both fixed to the mounting plate; The bottom of the circular cavity is provided with a second through hole that is adapted to the first demolding post and the second demolding post, and the first demolding post and the second demolding post can pass smoothly through the second through hole.

[0009] The bottom of the centripetal slider is fixedly connected to a sliding rod, and an oblong hole is provided in the mounting groove for the sliding rod to pass through. The top of the rotating disk is provided with a second oblique groove that is slidably connected to the bottom of the sliding rod.

[0010] The top of the rotating disk is fixedly connected to a fixing ring that communicates with the first through hole, and the outer peripheral wall of the fixing ring is provided with a third inclined groove along the circumferential direction.

[0011] A push rod is slidably provided on the inner side of the circular cavity corresponding to the position through which the second demolding column passes. The top of the push rod is flush with the inner bottom wall of the circular cavity, and the bottom of the push rod is fixedly connected to a third slider that slides in cooperation with the third inclined groove.

[0012] The technical effects achieved by this utility model are as follows: This invention achieves multi-component linkage drive. A set of hydraulic cylinders drives the rotating disk to rotate, which simultaneously drives the radial movement of the centripetal slider, the up-and-down movement of the demolding column and the up-and-down movement of the ejector pin. It does not require multiple independent power sources, has a compact structure, is easy to operate, and greatly improves production efficiency. This utility model has good slider synchronization. The rotating disk cooperates synchronously with the slide rods of all the radial sliders through the second inclined slide groove, ensuring that multiple radial sliders move synchronously in the radial direction. The cavity enclosure accuracy is high, which effectively guarantees the side wall forming quality of the clutch drive disk and reduces flash defects. This utility model provides stable and reliable demolding. It adopts a composite demolding structure of "demolding column separation + ejector pin push". The demolding column first separates from the product hole, and then the ejector pin pushes the product upward simultaneously. The demolding force is uniform, avoiding product deformation or jamming, and further improving the product qualification rate. This utility model has strong structural stability. The rotation limit of the moving tube by the hexagonal prism, the angle compensation of the hydraulic cylinder by the ball joint structure, and the sliding fit between each inclined groove and the slider all ensure the smooth operation of the equipment, reduce maintenance costs, and are suitable for large-scale mass production. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a top view schematic diagram of the bottom mold structure of this utility model; Figure 3 This is a side view of the bottom mold structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the bottom mold of this utility model; Figure 5 This is a schematic diagram of the rotating disc machine structure of this utility model; Figure 6 This is a partial structural diagram of the bottom mold of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 1. Bottom mold; 2. Upper mold; 3. Mounting groove; 4. Centripetal slider; 5. Circular cavity; 6. Mounting cavity; 7. Hexagonal prism; 8. Moving tube; 9. Rotating disk; 10. Hydraulic cylinder; 11. First limiting slider; 12. First limiting inclined groove; 13. Waist-shaped hole; 14. Sliding rod; 15. Second inclined sliding groove; 16. Mounting disk; 17. First demolding pillar; 18. Second demolding pillar; 19. Retaining ring; 20. Third inclined groove; 21. Ejector rod; 22. Third slider. Detailed Implementation

[0015] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0016] like Figures 1-3 As shown, a multi-slider core-pulling die casting mold includes a bottom mold 1. The top of the bottom mold 1 is provided with an installation groove 3. Multiple radial sliders 4 are arranged circumferentially in the installation groove 3. The radial sliders 4 have an arc-shaped working surface. The multiple radial sliders 4 can slide synchronously in the radial direction and surround to form a circular cavity 5, which is used for the initial die casting of the clutch drive disc component. The bottom mold 1 has an installation cavity 6 located below the installation groove 3. The installation cavity 6 is equipped with a drive mechanism for driving multiple centripetal sliders 4 to move radially. The center of the circular cavity 5 is provided with a first demolding column 17. Inside the circular cavity 5, multiple second demolding columns 18 are arranged at equal angles with the first demolding column 17 as the center. After die casting is completed, the drive mechanism can drive the first demolding column 17 and the second demolding columns 18 to move downwards to achieve demolding from the clutch drive plate.

[0017] like Figures 2-5 As shown, the driving mechanism includes a hexagonal prism 7 disposed in the mounting cavity 6, and a movable tube 8 slidably fitted onto the top of the hexagonal prism 7; a rotating disk 9 is rotatably mounted in the mounting cavity 6, and a first through hole for the movable tube 8 to pass through is opened in the middle of the rotating disk 9; two first limiting grooves 12 are opened on the outer wall of the movable tube 8, and a first limiting slider 11 that cooperates with the first limiting grooves 12 is fixedly provided on the inner side of the first through hole; a plurality of hydraulic cylinders 10 connected to the rotating disk 9 are provided circumferentially at the bottom of the mounting cavity 6, and the hydraulic cylinders 10 are connected to the rotating disk 9 and the mounting cavity 6 through a ball joint structure.

[0018] According to the above structure, the hydraulic cylinder 10 drives the rotating disk 9 to rotate, and the rotating disk 9 drives the first limiting slider 11 to rotate. The first limiting slider 11 slides and engages with the first limiting inclined groove 12. The hexagonal prism 7 limits the rotation of the moving tube 8, thereby driving the moving tube 8 to move up and down smoothly. The hydraulic cylinder 10 is connected to the rotating disk 9 and the mounting cavity 6 through a ball joint, so that when the angle of the hydraulic cylinder 10 changes, it can smoothly drive the rotating disk 9 to rotate, which improves the practicality of the equipment.

[0019] like Figure 5 As shown, the top of the moving tube 8 is fixedly connected to the mounting plate 16, and the first demolding column 17 and the second demolding column 18 are both fixed on the mounting plate 16; the bottom of the circular cavity 5 is provided with a second through hole that is adapted to the first demolding column 17 and the second demolding column 18, and the first demolding column 17 and the second demolding column 18 can pass smoothly through the second through hole.

[0020] According to the above structure, the up-and-down movement of the moving tube 8 drives the first demolding column 17 and the second demolding column 18 on the mounting plate 16 to move up and down. Before die casting the clutch drive plate, the first demolding column 17 and the second demolding column 18 extend into the circular cavity 5 to form the cavity on the clutch drive plate. After die casting is completed, the first demolding column 17 and the second demolding column 18 move down and separate from the cavity on the clutch drive plate, which facilitates subsequent demolding and increases the practicality of the equipment.

[0021] like Figure 6 As shown, a sliding rod 14 is fixedly connected to the bottom of the centripetal slider 4, and an oblong hole 13 is provided in the mounting groove 3 for the sliding rod 14 to pass through. A second oblique groove 15 is provided on the top of the rotating disk 9 and is slidably connected to the bottom of the sliding rod 14.

[0022] According to the above structure, the second inclined slide groove 15 is driven to rotate by the rotating disk 9. The second inclined slide groove 15 is slidably engaged with the slide rod 14. The slide rod 14 drives the radial slider 4 to move radially. When the clutch drive disc is die-cast, multiple radial sliders 4 slide inward, so that multiple radial sliders 4 surround a circular groove that matches the clutch drive disc for die-casting. After the die-casting is completed, the rotating disk 9 rotates in the opposite direction, driving the radial slider 4 to slide centrifugally, so that the radial slider 4 separates from the side surface of the clutch drive disc, which facilitates subsequent demolding.

[0023] like Figure 3 As shown, a fixed ring 19 communicating with the first through hole is fixedly connected to the top of the rotating disk 9. A third inclined groove 20 is provided on the outer peripheral wall of the fixed ring 19 along the circumferential direction. A push rod 21 is slidably provided on the inner side of the circular cavity 5 corresponding to the through position of the second demolding column 18. The top of the push rod 21 is flush with the inner bottom wall of the circular cavity 5. A third slider 22 that slides in cooperation with the third inclined groove 20 is fixedly connected to the bottom of the push rod 21.

[0024] According to the above structure, the rotating disk 9 drives the fixed ring 19 to rotate, the fixed ring 19 drives the third inclined groove 20 to rotate, the third inclined groove 20 cooperates with the third slider 22, and drives the ejector rod 21 to move up and down. When the clutch drive disk is die-cast and demolding is required, multiple ejector rods 21 move up to facilitate the upward movement of the clutch drive disk for demolding. The structure is simple and the operation is convenient.

[0025] The working principle of this utility model is as follows: Mold closing and die casting preparation: Start the hydraulic cylinder 10, the piston rod extends and retracts to drive the rotating disk 9 to rotate clockwise; the rotating disk 9 cooperates with the slide rod 14 through the second inclined slide groove 15, driving the 6 centripetal sliders 4 to move radially and centripetally until they close to form a circular cavity 5; at the same time, the first limiting slider 11 on the rotating disk 9 slides along the first limiting inclined groove 12, driving the moving tube 8 to move upward along the hexagonal prism 7, thereby driving the first demolding column 17 and the second demolding column 18 on the mounting disk 16 to extend upward, with the top flush with the inner bottom wall of the circular cavity 5; at this time, the fixing ring 19 rotates with the rotating disk 9, cooperates with the third slider 22 through the third inclined groove 20, and drives the ejector rod 21 to move downward, with the top flush with the inner bottom wall of the circular cavity 5; the upper mold 2 is closed on the top of the bottom mold 1 to complete the mold closing; Die casting: Molten metal is injected into the die casting cavity through the pouring port of the upper mold 2. After the molten metal cools and solidifies in the cavity, a clutch drive disc blank with multiple holes is formed. Demolding process: The hydraulic cylinder 10 is activated to extend and retract in the reverse direction, driving the rotating disk 9 to rotate counterclockwise; the rotating disk 9 drives the sliding rod 14 to move radially centrifugally along the waist-shaped hole 13 through the second inclined slide groove 15, driving the centripetal slider 4 to move outward synchronously and disengage from the side wall of the clutch drive disk; at the same time, the first limiting slider 11 slides in the reverse direction along the first limiting inclined groove 12, driving the moving tube 8 to move downward, driving the first demolding column 17 and the second demolding column 18 to retract downward and disengage from the hole on the clutch drive disk; the fixing ring 19 rotates counterclockwise with the rotating disk 9, driving the third slider 22 to move upward through the third inclined groove 20, driving the ejector rod 21 to push upward synchronously, ejecting the clutch drive disk blank from the circular cavity 5; the upper mold 2 is opened, the product is taken out, and one die-casting cycle is completed.

[0026] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A multi-slider core-pulling die-casting mold, comprising a bottom mold (1), characterized in that: The bottom mold (1) is provided with a mounting groove (3) at the top. Multiple centripetal sliders (4) are arranged circumferentially in the mounting groove (3). The centripetal sliders (4) have an arc-shaped working surface. Multiple centripetal sliders (4) can slide synchronously in the radial direction and enclose to form a circular cavity (5) for preliminary die casting of the clutch drive disc component. The bottom mold (1) has an installation cavity (6) located below the installation groove (3), and the installation cavity (6) is provided with a drive mechanism for driving multiple centripetal sliders (4) to move radially. The center of the circular cavity (5) is provided with a first demolding column (17). Inside the circular cavity (5), a plurality of second demolding columns (18) are arranged at equal angles with the first demolding column (17) as the center. After the die casting is completed, the driving mechanism can drive the first demolding column (17) and the second demolding column (18) to move downward to achieve demolding from the clutch drive plate.

2. The multi-slider core-pulling die-casting mold according to claim 1, characterized in that: The driving mechanism includes a hexagonal prism (7) disposed in the mounting cavity (6), and a movable tube (8) is slidably fitted onto the top of the hexagonal prism (7); A rotating disk (9) is rotatably installed inside the mounting cavity (6), and a first through hole is provided in the middle of the rotating disk (9) for the moving tube (8) to pass through.

3. The multi-slider core-pulling die-casting mold according to claim 2, characterized in that: The outer wall of the moving tube (8) has two first limiting grooves (12), and the inner side of the first through hole is fixedly provided with a first limiting slider (11) that cooperates with the first limiting grooves (12).

4. The multi-slider core-pulling die-casting mold according to claim 1, characterized in that: The bottom of the mounting cavity (6) is provided with a plurality of hydraulic cylinders (10) connected to the rotating disk (9) along the circumferential direction. The hydraulic cylinders (10) are connected to the rotating disk (9) and the mounting cavity (6) through a ball joint structure.

5. A multi-slider core-pulling die-casting mold according to claim 2, characterized in that: The top of the moving tube (8) is fixedly connected to the mounting plate (16), and the first demolding column (17) and the second demolding column (18) are both fixed on the mounting plate (16). The bottom of the circular cavity (5) is provided with a second through hole that is compatible with the first demolding column (17) and the second demolding column (18), and the first demolding column (17) and the second demolding column (18) can pass smoothly through the second through hole.

6. A multi-slider core-pulling die-casting mold according to claim 2, characterized in that: The bottom of the centripetal slider (4) is fixedly connected to a slide rod (14), and the mounting groove (3) is provided with an oblong hole (13) through which the slide rod (14) passes. The top of the rotating disk (9) is provided with a second oblique groove (15) that is slidably connected to the bottom of the slide rod (14).

7. A multi-slider core-pulling die-casting mold according to claim 2, characterized in that: The top of the rotating disk (9) is fixedly connected to a fixing ring (19) that communicates with the first through hole, and the outer peripheral wall of the fixing ring (19) is provided with a third inclined groove (20) along the circumferential direction.

8. A multi-slider core-pulling die-casting mold according to claim 7, characterized in that: A push rod (21) is slidably provided on the inner side of the circular cavity (5) corresponding to the position through which the second demolding column (18) passes. The top of the push rod (21) is flush with the inner bottom wall of the circular cavity (5), and the bottom of the push rod (21) is fixedly connected to a third slider (22) that slides in cooperation with the third inclined groove (20).

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