Multi-section ejection type die-casting die

Abstract

The utility model provides a multi-section ejection type die-casting die, and belongs to the technical field of die-casting dies. Comprising a fixing plate and a mounting plate, a first mold is arranged in the fixing plate in a penetrating mode, a hydraulic cylinder used for driving the first mold to move is fixedly mounted on one side of the fixing plate, a second mold is arranged on one side of the first mold, and the telescopic end of the hydraulic cylinder is fixedly connected with one side of the first mold; a connecting plate is fixedly connected to one side of the second mold, two L-shaped plates are fixedly connected to one side of the connecting plate, due to the limiting effect of the two L-shaped plates, the rotating handle rotates around the axis of the rotating connecting piece, then the limiting plate is pushed again to move forwards by a certain distance, the part is slowly ejected out, and a period of time is reserved for a mechanical arm to take materials; and errors of material taking operation can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting molds, and particularly relates to a multi-stage ejection die casting mold. Background Art

[0002] Die casting molds, an important industrial tool, are widely used in many fields such as automobiles, electronics, aerospace, medical devices, etc. Their unique forming ability and high-precision processing characteristics make die casting molds play an irreplaceable role in modern industrial production.

[0003] The utility model with the existing publication number: CN 219648666 U discloses an ejection mechanism of a die casting mold, including a working box. A lower mold is fixedly connected to the top of the working box. A first connecting pipe penetrates through the inner wall of the top of the working box, and the top end of the first connecting pipe extends into the lower mold. An installation cylinder is fixedly connected to the inner wall of the bottom of the working box. An ejection cylinder is slidably inserted into the installation cylinder, and the top end of the ejection cylinder extends into the first connecting pipe. A first sealing block is fixedly connected to the top end of the ejection cylinder. A cooling mechanism capable of dissipating heat and cooling the die-cast parts in the lower mold is arranged in the working box.

[0004] However, in the prior art, after die casting molding, most use a single-stage ejection method for discharging. The discharging speed is relatively fast, which not only is not conducive to protecting the surface of the parts after die casting molding, but also results in too short a time for the manipulator to pick up the material during the demolding operation, increasing the error of the picking operation. Therefore, the present application provides a multi-stage ejection die casting mold to meet the requirements. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a multi-stage ejection die casting mold to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A multi-stage ejection die casting mold, including: a fixed plate and a mounting plate. A first mold is penetrated and arranged inside the fixed plate. A hydraulic cylinder for driving the first mold to move is fixedly installed on one side of the fixed plate. A second mold is arranged on one side of the first mold. The telescopic end of the hydraulic cylinder is fixedly connected to one side of the first mold. A connecting plate is fixedly connected to one side of the second mold. Two L-shaped plates are fixedly connected to one side of the connecting plate. A cylinder is fixedly installed at the center position on one side of the mounting plate. Telescopic columns are fixedly connected to one side of the mounting plate and close to the four sides. A two-stage ejection mechanism is arranged at the telescopic end of the cylinder;

[0008] The two-stage ejection mechanism includes a limit plate, a pressing plate and a connecting shaft. On one side of the limit plate, three ejectors are fixedly connected. On the outer side walls of the three ejectors, return springs are arranged. One ends of the return springs are fixed to the connecting plate, and the other ends of the return springs are in contact with one end of the limit plate. On one side of the pressing plate and at the four corner positions, L-shaped blocks are rotatably connected. The L-shaped blocks are located between the limit plate and the pressing plate. Two ends of the connecting shaft are fixedly connected to two sides of the two L-shaped blocks respectively. One side of the limit plate is in contact with the four L-shaped blocks.

[0009] Preferably, three through holes are respectively formed through the second mold and the connecting plate at the same position.

[0010] Preferably, two protection columns are fixedly connected to one side of the fixing plate, and the other ends of the two protection columns are fixed to one side of the second mold.

[0011] Preferably, one ends of the three ejectors are respectively arranged inside the three through holes.

[0012] Preferably, the first mold penetrates through the inside of the fixing plate.

[0013] Preferably, the other ends of the four telescopic columns are fixed to one side of the pressing plate.

[0014] Preferably, the other ends of the two L-shaped plates are fixedly connected to one side of the mounting plate.

[0015] Preferably, a liquid injection hole is formed through one side of the second mold.

[0016] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0017] In the above solution, by starting the cylinder to drive the pressing plate to move, further driving the four telescopic columns to extend, providing support and limiting effects for the pressing plate to ensure the stable movement of the pressing plate. At this time, the pressing plate further drives the limit plate to move towards the connecting plate. At this time, the ejector presses the part through the through hole, and the return spring is in a compressed state. When the rotating handle moves to contact the two L-shaped plates, the first-stage ejection process is completed. At this time, the part is located at the edge position inside the second mold. Due to the limiting effect of the two L-shaped plates, the rotating handle rotates around the axis of the rotating connecting piece, and then further pushes the limit plate forward for a certain distance to slowly eject the part, leaving a certain time for the manipulator to pick up the material, which is beneficial to reducing the error of the picking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0019] Figure 1 It is a schematic three-dimensional structure diagram of a multi-stage ejection die-casting mold;

[0020] Figure 2 It is a schematic exploded view of the split structure of a multi-stage ejection die-casting mold;

[0021] Figure 3 It is an exploded view of the two-stage ejection mechanism of a multi-stage ejection die-casting mold;

[0022] Figure 4 It is a schematic diagram of the rotating handle and rotating connecting piece of a multi-stage ejection die-casting mold.

[0023] [Reference numerals]

[0024] 1, hydraulic cylinder; 2, fixed plate; 3, first mold; 4, second mold; 5, protection column; 6, liquid injection hole; 7, connecting plate; 8, L-shaped plate; 9, two-stage ejection mechanism; 91, limit plate; 92, pusher; 93, return spring; 94, pressing plate; 95, connecting shaft; 96, L-shaped block; 10, mounting plate; 11, air cylinder; 12, telescopic column; 13, through hole.

[0025] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. Detailed implementation manners

[0026] The following describes in detail a multi-stage ejection die-casting mold provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0027] It should be noted that in the specification, references to "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when describing a specific feature, structure, or characteristic in connection with an embodiment, implementing such feature, structure, or characteristic in connection with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0028] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that may not be explicitly described.

[0029] As Figures 1-4 shown, an embodiment of the present utility model provides a multi-stage ejection die-casting mold, including: a fixed plate 2 and a mounting plate 10. A first mold 3 is disposed through the interior of the fixed plate 2. A hydraulic cylinder 1 for driving the movement of the first mold 3 is fixedly installed on one side of the fixed plate 2. A second mold 4 is disposed on one side of the first mold 3. The telescopic end of the hydraulic cylinder 1 is fixedly connected to one side of the first mold 3. A connecting plate 7 is fixedly connected to one side of the second mold 4. Two groups of L-shaped plates 8 are fixedly connected to one side of the connecting plate 7. A cylinder 11 is fixedly installed at the central position on one side of the mounting plate 10. Telescopic columns 12 are fixedly connected to one side of the mounting plate 10 and near the four sides. A two-stage ejection mechanism 9 is disposed at the telescopic end of the cylinder 11. By starting the die-casting hydraulic cylinder 1, since the hydraulic cylinder 1 is fixed on one side of the fixed plate 2 and the first mold 3 can move within the fixed plate 2, the telescopic end of the hydraulic cylinder 1 drives the first mold 3 to move towards the second mold 4, and the die-casting solution is poured from the injection hole 6 into the sealed cavity formed inside the first mold 3 and the second mold 4. After the part is die-cast and formed, the demolding operation is performed.

[0030] As Figures 1-4As shown, the two-stage ejection mechanism 9 includes a limit plate 91, a pressure plate 94, and a connecting shaft 95. Three ejectors 92 are fixedly connected to one side of the limit plate 91. Return springs 93 are arranged on the outer side walls of the three ejectors 92. One end of each return spring 93 is fixed to the connecting plate 7, and the other end of the return spring 93 is in contact with one end of the limit plate 91. L-shaped blocks 96 are rotatably connected to four corners on one side of the pressure plate 94. The L-shaped blocks 96 are located between the limit plate 91 and the pressure plate 94. Both ends of the connecting shaft 95 are fixedly connected to the two sides of the two L-shaped blocks 96 respectively. One side of the limit plate 91 is in contact with the four L-shaped blocks 96. By starting the cylinder 11 to drive the pressure plate 94 to move, the four telescopic columns 12 are further driven to extend, providing support and limiting functions for the pressure plate 94 to ensure the stable movement of the pressure plate 94. At this time, the pressure plate 94 further drives the limit plate 91 to move towards the connecting plate 7. At this time, the ejector 92 presses the part through the through hole 13. At this time, the return spring 93 is in a compressed state. When the L-shaped block 96 moves to contact the two L-shaped plates 8, the first-stage ejection process is completed. At this time, the part is located at the edge position inside the second mold 4. Due to the limiting effect of the two L-shaped plates 8, the two connecting shafts 95 and the L-shaped blocks 96 connected thereto cooperate to rotate. One end of the L-shaped block 96 abuts against one side of the L-shaped plate 8. When the other end of the L-shaped block 96 rotates, it further pushes the limit plate 91 to move forward a certain distance, slowly ejecting the part, leaving a certain time for the manipulator to pick up the material, which is beneficial to reducing the error of the picking operation.

[0031] As Figures 1-4 shown, three through holes 13 are respectively formed through the same positions of the second mold 4 and the connecting plate 7. Two protection columns 5 are fixedly connected to one side of the fixing plate 2. The other ends of the two protection columns 5 are fixedly connected to one side of the second mold 4. One ends of the three ejectors 92 are respectively arranged inside the three through holes 13. The first mold 3 penetrates through the inside of the fixing plate 2. The other ends of the four telescopic columns 12 are fixedly connected to one side of the pressure plate 94. The other ends of the two L-shaped plates 8 are fixedly connected to one side of the mounting plate 10. A liquid injection hole 6 is formed through one side of the second mold 4. The die-casting solution is poured into the closed cavity formed inside the first mold 3 and the second mold 4 from the liquid injection hole 6. After the part is die-cast and formed, the demolding operation is carried out.

[0032] Working principle: First, start the die-casting hydraulic cylinder 1 to drive the first die 3 to move towards the second die 4, and pour the die-casting solution into the closed cavity formed inside the first die 3 and the second die 4 through the liquid injection hole 6. After the part is die-cast and formed, perform the demolding operation. Start the cylinder 11 to drive the pressing plate 94 to move, further drive the four telescopic columns 12 to extend, provide support and limit functions for the pressing plate 94, and ensure the stable movement of the pressing plate 94. At this time, the pressing plate 94 further drives the limiting plate 91 to move towards the connecting plate 7. At this time, the pusher 92 squeezes the part through the through hole 13. At this time, the return spring 93 is in a compressed state. When the four L-shaped blocks 96 move to contact the two L-shaped plates 8, one ejection process is completed. At this time, the part is located at the edge position inside the second die 4. Due to the limiting effect of the two L-shaped plates 8, the two connecting shafts 95 and the L-shaped blocks 96 connected thereto cooperate to rotate. One end of the L-shaped block 96 abuts against one side of the L-shaped plate 8. When the other end of the L-shaped block 96 rotates, it pushes the limiting plate 91 forward for a certain distance again, slowly ejects the part, and leaves a certain period of time for the manipulator to pick up the material, which is beneficial to reducing the error of the picking operation.

[0033] The present utility model covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without these detailed descriptions.

[0034] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A multi-stage ejection die casting mold, characterized in that: include: A fixed plate (2) and a mounting plate (10), wherein a first mold (3) is provided inside the fixed plate (2), a hydraulic cylinder (1) for driving the first mold (3) to move is fixedly installed on one side of the fixed plate (2), a second mold (4) is provided on one side of the first mold (3), a telescopic end of the hydraulic cylinder (1) is fixedly connected to one side of the first mold (3), a connecting plate (7) is fixedly connected to one side of the second mold (4), two groups of L-shaped plates (8) are fixedly connected to one side of the connecting plate (7), a cylinder (11) is fixedly installed on one side of the mounting plate (10) and at a central position, a telescopic column (12) is fixedly connected on one side of the mounting plate (10) and near the four sides, and a two-stage ejection mechanism (9) is provided at the telescopic end of the cylinder (11); The two-stage ejection mechanism (9) comprises a limit plate (91), a pressure plate (94) and a connecting shaft (95); one side of the limit plate (91) is fixedly connected with three groups of pushers (92); the outer side walls of the three groups of pushers (92) are all provided with a return spring (93); one end of the return spring (93) is fixed to the connecting plate (7); the other end of the return spring (93) is in contact with one end of the limit plate (91); one side of the pressure plate (94) and at the four corners are rotatably connected with L-shaped blocks (96); the L-shaped blocks (96) are located between the limit plate (91) and the pressure plate (94); the two ends of the connecting shaft (95) are respectively fixedly connected to the two sides of the two groups of L-shaped blocks (96); one side of the limit plate (91) is in contact with the four groups of L-shaped blocks (96).

2. The multi-stage ejection die-casting mold according to claim 1, characterized in that: Three groups of through holes (13) are provided at the same positions of the second mold (4) and the connecting plate (7).

3. The multi-stage ejection die-casting mold according to claim 1, characterized in that: Two groups of protective columns (5) are fixedly connected to one side of the fixed plate (2), and the other ends of the two groups of protective columns (5) are fixed to one side of the No. 2 mold (4).

4. The multi-stage ejection die-casting mold according to claim 1, characterized in that: One end of the three groups of pushers (92) is respectively arranged inside the three groups of through holes (13).

5. The multi-stage ejection die-casting mold according to claim 1, characterized in that: The No. 1 mold (3) penetrates the interior of the fixed plate (2).

6. The multi-stage ejection die-casting mold according to claim 1, characterized in that: The other ends of the four groups of telescopic columns (12) are all fixed to one side of the pressing plate (94).

7. The multi-stage ejection die-casting mold according to claim 1, characterized in that: The other ends of the two groups of L-shaped plates (8) are fixedly connected to one side of the mounting plate (10).

8. The multi-stage ejection die-casting mold according to claim 1, characterized in that: A liquid injection hole (6) is provided through one side of the No. 2 mold (4).

Images