Die core structure of die-casting die

Abstract

The utility model provides a die core structure of a die-casting die. The die core structure of the die-casting die comprises a front die core, a rear die core, a rear die bottom plate, a front die bottom plate, a rear die insert pin and a driving assembly, wherein the driving assembly is used for enabling the rear die core to move; the front mold core is arranged on the front mold bottom plate and is opposite to the rear mold core, and when the front mold core and the rear mold core are closed, a bracket die-casting mold cavity is formed between the rear mold core and the front mold core; the rear mold bottom plate is positioned at the bottom of the rear mold core; the rear mold insert pin is arranged on the rear mold bottom plate and is arranged on the rear mold core in a penetrating manner; and the driving assembly is connected with the rear mold bottom plate and the rear mold core, so that the driving assembly drives the rear mold core to move above the rear mold bottom plate. The mold core structure of the die-casting mold can solve the problem that the insert pin is easy to block materials when the bracket is demolded, so that the bracket demolding difficulty is reduced, the bracket demolding is smooth, and the bracket molding quality is also ensured.

Description

Technical Field

[0001] This utility model relates to the field of motor parts processing technology, and more specifically, to a die core structure for a die casting mold. Background Technology

[0002] As one of the important components of the motor, the bracket is formed by die casting of molten aluminum under high temperature and high pressure.

[0003] During the bracket manufacturing process, when the die-casting machine with its hydraulic cylinder-equipped movable rear mold core plate is die-cast, aluminum under high temperature and pressure is hydraulically cast into the bracket die-casting mold cavity to form the bracket. After the aluminum melt cools to a solid state, the die-casting machine pulls open the rear mold of the mold core structure. The two hydraulic cylinders on the upper and lower parts of the rear mold core also pull open the insert pins on the mold core. The insert pins are then pulled out from the holes of the formed bracket product. Finally, the ejector pin of the rear mold pushes the bracket material shank out of the rear mold core for ejection.

[0004] However, most existing die-casting machines have their core structures with the insert pins fixed to the rear mold base plate, while the mounting posts of the bracket are inside the die-casting mold cavity. Due to the influence of the inner diameter of the die-casting mold cavity and the limitation of the outer diameter of the insert pins, the bracket is not easily demolded and the insert pins are prone to jamming. This not only increases the difficulty of demolding the bracket, but also easily causes the bracket to deform, which greatly affects the quality of the bracket molding and the subsequent assembly and use of the bracket. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and provide a die core structure for die casting molds. This die core structure can solve the problem of easy material jamming when the insert pins are demolded, thereby not only reducing the difficulty of demolding the bracket and making the bracket demolding smooth, but also ensuring the quality of bracket forming.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a die-casting mold core structure, characterized in that it includes a front mold core, a rear mold core, a rear mold base plate, a front mold base plate, a rear mold insert, and a driving assembly for moving the rear mold core; the front mold core is disposed on the front mold base plate and is disposed opposite to the rear mold core; when the front mold core and the rear mold core are closed, a die-casting mold cavity is provided between the rear mold core and the front mold core; the rear mold base plate is located at the bottom of the rear mold core, and the rear mold insert is disposed on the rear mold base plate and passes through the rear mold core; the driving assembly is connected to the rear mold base plate and to the rear mold core, thereby enabling the driving assembly to drive the rear mold core to move above the rear mold base plate.

[0007] Specifically, the driving component driving the rear mold core to move above the rear mold base plate means that the driving component drives the rear mold core to fit against the rear mold base plate, or the driving component drives the rear mold core to detach from the rear mold base plate.

[0008] When the front mold core and the rear mold core are closed, the drive assembly drives the rear mold core to fit against the rear mold base plate, and the rear mold insert extends into the die-casting cavity of the bracket.

[0009] When the bracket is formed and the front mold core and the rear mold core are demolded, the drive assembly drives the rear mold core to detach from the rear mold base plate, and the rear mold insert detaches from the bracket in the die-casting mold cavity.

[0010] The drive assembly includes a rear mold fixing seat and a rear mold cylinder; the rear mold fixing seat is connected to the rear mold base plate; the rear mold cylinder is mounted on the rear mold fixing seat, and the piston rod of the rear mold cylinder passes through the rear mold base plate and is connected to the rear mold core.

[0011] The drive assembly also includes an oil inlet circuit and an oil inlet port connected to the oil inlet circuit; the oil inlet circuit is connected to the rear mold cylinder and connected to an external oil tank through the oil inlet port.

[0012] The drive assembly also includes an oil outlet circuit and an oil outlet connected to the oil outlet circuit; the oil outlet circuit is connected to the rear mold cylinder and connected to an external oil tank through the oil outlet.

[0013] The oil inlet and oil outlet are respectively located inside the rear mold fixing seat; the oil inlet and oil outlet are respectively located on the side of the rear mold fixing seat.

[0014] The mold core structure also includes a guide rod; the guide rod is set on the rear mold fixing seat and passes through the rear mold base plate and the rear mold core; when the front mold core and the rear mold core are closed, the guide rod is connected to the front mold core.

[0015] The rear mold core also includes ejector pins for ejecting the formed bracket.

[0016] This invention designs the rear mold core as a movable structure, so that when the front mold core and the rear mold core are demolded, the rear mold core can be driven out by the drive component, causing the rear mold insert to exit part of the mounting hole of the formed bracket first, so that the rear mold insert is separated from the mounting hole of the bracket. This solves the problem of the rear mold insert easily getting stuck when the bracket is demolded, thereby not only reducing the difficulty of bracket demolding and making bracket demolding smooth, but also making the bracket less prone to deformation and ensuring the quality of bracket forming.

[0017] The working process of the die-casting machine using the mold core structure of this application is as follows:

[0018] After the die-casting machine finishes casting the bracket, the bracket is formed. The die-casting machine then demolds the front and rear mold cores. First, the rear mold cylinder, located on the rear mold fixing seat, drives the rear mold core to eject from the rear mold base plate. At this time, the rear mold insert disengages from the mounting hole of the formed bracket. Finally, the ejector pin is controlled to push the formed bracket out, thus achieving bracket ejection. During bracket ejection, because the rear mold insert disengages from the bracket's mounting hole first, the problem of the rear mold insert easily getting stuck during bracket demolding is solved.

[0019] When the die-casting machine closes the front mold core and the rear mold core, the rear mold cylinder drives the rear mold core to reset and fit against the rear mold base plate. At this time, the rear mold insert re-extends into the die-casting cavity of the bracket to carry out the next round of die-casting process.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects: the core structure of the die-casting mold of the present invention can solve the problem of easy jamming of the insert pins when the bracket is demolded, thereby not only reducing the difficulty of bracket demolding and making the bracket demolding smooth, but also ensuring the quality of bracket forming. Attached Figure Description

[0021] Figure 1 This is an exploded view of the core structure of the die-casting mold of this utility model;

[0022] Figure 2 This is a schematic diagram of the core structure of the die-casting mold of this utility model;

[0023] Figure 3 This is a front view of the core structure of the die-casting mold of this utility model;

[0024] Figure 4 yes Figure 3 Schematic diagram of the EE direction;

[0025] Among them, 1 is the front mold core, 2 is the rear mold core, 3 is the rear mold base plate, 4 is the front mold base plate, 5 is the rear mold insert, 6 is the support die casting cavity, 7 is the support, 8 is the rear mold fixing seat, 9 is the rear mold oil cylinder, 10 is the oil inlet, 11 is the oil outlet, 12 is the guide rod, and 13 is the ejector pin. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Example

[0027] like Figures 1 to 4 As shown, the die-casting mold core structure of this utility model includes a front mold core 1, a rear mold core 2, a rear mold base plate 3, a front mold base plate 4, a rear mold insert 5, and a drive assembly for moving the rear mold core 2. The front mold core 1 is disposed on the front mold base plate 4 and is disposed opposite to the rear mold core 2. When the front mold core 1 and the rear mold core 2 are closed, a support die-casting cavity 6 is provided between the rear mold core 2 and the front mold core 1. The rear mold base plate 3 is located at the bottom of the rear mold core 2. The rear mold insert 5 is disposed on the rear mold base plate 3 and passes through the rear mold core 2. The drive assembly is connected to the rear mold base plate 3 and to the rear mold core 2, so that the drive assembly drives the rear mold core 2 to move above the rear mold base plate 3.

[0028] The aforementioned driving component driving the rear mold core 2 to move above the rear mold base plate 3 means that the driving component drives the rear mold core 2 to conform to the rear mold base plate 3, or the driving component drives the rear mold core 2 to detach from the rear mold base plate 3. Specifically, when the front mold core 1 and the rear mold core 2 are closed, the driving component drives the rear mold core 2 to conform to the rear mold base plate 3, and the rear mold insert 5 extends into the support die-casting cavity 6. When the support 7 is formed and the front mold core 1 and the rear mold core 2 are demolded, the driving component drives the rear mold core 2 to detach from the rear mold base plate 3, and the rear mold insert 5 detaches from the support 7 within the support die-casting cavity 6.

[0029] The driving assembly of this utility model includes a rear mold fixing seat 8 and a rear mold cylinder 9. The rear mold fixing seat 8 is connected to the rear mold base plate 3, and the rear mold cylinder 9 is mounted on the rear mold fixing seat 8. The piston rod of the rear mold cylinder 9 passes through the rear mold base plate 3 and is connected to the rear mold core 2. The driving assembly also includes an oil inlet passage, an oil inlet 10 connected to the oil inlet passage, an oil outlet passage, and an oil outlet 11 connected to the oil outlet passage. The oil inlet passage is connected to the rear mold cylinder 9 and connected to an external oil tank through the oil inlet 10. The oil outlet passage is connected to the rear mold cylinder 9 and connected to an external oil tank through the oil outlet 11. The oil inlet passage and the oil outlet passage are respectively located inside the rear mold fixing seat 8, while the oil inlet 10 and the oil outlet 11 are respectively located on the side of the rear mold fixing seat 8.

[0030] The mold core structure of this utility model also includes a guide rod 12, which is disposed on the rear mold fixing seat 8 and passes through the rear mold base plate 3 and the rear mold core 2. When the front mold core 1 and the rear mold core 2 are closed, the guide rod 12 is connected to the front mold core 1. In addition, the rear mold core 2 also includes an ejector pin 13 for ejecting the formed bracket 7.

[0031] The working process of the die-casting machine using the mold core structure of this application is as follows:

[0032] After the die-casting machine finishes casting the bracket, bracket 7 is formed. The die-casting machine then demolds the front mold core 1 and the rear mold core 2. First, the rear mold cylinder 9, located on the rear mold fixing seat 8, drives the rear mold core 2 to eject from the rear mold base plate 3. At this time, the rear mold insert 5 disengages from the mounting hole of the formed bracket 7. Finally, the ejector pin 13 pushes the formed bracket 7 out, thus achieving bracket 7 ejection. During bracket 7 ejection, because the rear mold insert 5 disengages from the mounting hole of the bracket 7 first, the problem of the rear mold insert 5 easily getting stuck during bracket 7 demolding is solved.

[0033] When the die-casting machine closes the front mold core 1 and the rear mold core 2, the rear mold cylinder 9 drives the rear mold core 2 to reset and fit against the rear mold base plate 3. At this time, the rear mold insert 5 re-enters the die-casting cavity 6 of the bracket to carry out the next round of die-casting process.

[0034] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A mold core structure of a die casting mold characterized by comprising: The device includes a front mold core, a rear mold core, a rear mold base plate, a front mold base plate, a rear mold insert, and a drive assembly for moving the rear mold core. The front mold core is disposed on the front mold base plate and is positioned opposite the rear mold core. When the front and rear mold cores are closed, a die-casting cavity with a support is provided between the rear and front mold cores. The rear mold base plate is located at the bottom of the rear mold core, and the rear mold insert is disposed on the rear mold base plate and passes through the rear mold core. The drive assembly is connected to the rear mold base plate and the rear mold core, enabling the drive assembly to drive the rear mold core to move above the rear mold base plate.

2. The mold core structure of the die casting mold according to claim 1, characterized by: The term "driving component driving the rear mold core to move above the rear mold base plate" means that the driving component drives the rear mold core to fit against the rear mold base plate, or the driving component drives the rear mold core to detach from the rear mold base plate.

3. The mold core structure of the die casting mold according to claim 2, characterized by: When the front mold core and the rear mold core are closed, the drive assembly drives the rear mold core to fit against the rear mold base plate, and the rear mold insert extends into the die-casting cavity of the bracket.

4. The mold core structure of the die casting mold according to claim 2, characterized by: When the bracket is formed and the front mold core and the rear mold core are demolded, the drive assembly drives the rear mold core to detach from the rear mold base plate, and the rear mold insert detaches from the bracket in the die-casting mold cavity.

5. The mold core structure of the die casting mold according to claim 1, characterized by: The drive assembly includes a rear mold fixing seat and a rear mold cylinder; the rear mold fixing seat is connected to the rear mold base plate; the rear mold cylinder is mounted on the rear mold fixing seat, and the piston rod of the rear mold cylinder passes through the rear mold base plate and is connected to the rear mold core.

6. The mold core structure of the die casting mold according to claim 5, characterized by: The drive assembly also includes an oil inlet circuit and an oil inlet port connected to the oil inlet circuit; the oil inlet circuit is connected to the rear mold cylinder and connected to an external oil tank through the oil inlet port.

7. The mold core structure of the die casting mold according to claim 6, characterized by: The drive assembly also includes an oil outlet circuit and an oil outlet connected to the oil outlet circuit; the oil outlet circuit is connected to the rear mold cylinder and connected to an external oil tank through the oil outlet.

8. The mold core structure of the die casting mold according to claim 7, characterized by: The oil inlet and oil outlet are respectively located inside the rear mold fixing seat; the oil inlet and oil outlet are respectively located on the side of the rear mold fixing seat.

9. The core structure of a die casting mold according to claim 5, characterized by: The mold core structure also includes a guide rod; the guide rod is set on the rear mold fixing seat and passes through the rear mold base plate and the rear mold core; when the front mold core and the rear mold core are closed, the guide rod is connected to the front mold core.

10. The core structure of a die casting mold according to claim 1, characterized by: The rear mold core also includes ejector pins for ejecting the formed bracket.

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