Two-plate structure for die-casting machine and die-casting machine

Abstract

The utility model relates to the technical field of die-casting machines, in particular to a two-plate structure for a die-casting machine, which comprises a movable die plate, a connecting mechanism for connecting a toggle connecting rod mechanism of the die-casting machine and an ejector pin mechanism for pushing out a product, the ejector pin mechanism comprises a plurality of ejector pins and an ejection guide plate used for installing the ejector pins, a plurality of ejector pin holes are formed in the movable mold plate, and the ejector pins penetrate through the ejector pin holes and abut against the inner structure of the mold; the connecting mechanism comprises two connecting parts arranged at the two ends of the movable mold plate respectively, the connecting parts are provided with large lock shaft holes used for being connected with the toggle connecting rod mechanism, and the connecting mechanism is characterized in that a rib plate used for reinforcing the rigidity of the two-plate structure is arranged between the two connecting parts; the rib plate is located on the side, away from the movable mold plate, of the ejection guide plate. A gap between the ejection guide plate and the rib plate forms a dismounting area used for dismounting the ejector pin. The ejector pin has excellent structural strength and rigidity, can reserve a space for disassembly, assembly and replacement of the ejector pin, and improves maintenance convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting machines, in particular to a two-plate structure for a die-casting machine. Background Technique

[0002] A die-casting machine is a high-performance device for manufacturing metal parts. It injects molten metal into a mold under high pressure and rapidly cools it to form a shape. It mainly consists of components such as a mold clamping mechanism, an injection mechanism, an ejection mechanism, and a control system. Since the mold clamping mechanism is responsible for closing and locking the mold to ensure no leakage between the molds during the high-pressure injection process, its rigidity and strength are crucial for ensuring the quality of die-cast parts and production safety.

[0003] In order to ensure the working strength of the mold clamping mechanism, the inventor improved the prior art and proposed a patent for invention with the application number 202311793905.4, a die-casting machine mold clamping structure. By setting a guiding part and a conducting part, the conduction of the clamping force is made more adaptable, thereby ensuring the rigidity of the mold clamping mechanism; and on this basis, a rib plate for strengthening the structural strength is further set to improve the stability of the conducting part.

[0004] However, the inventor found through research that in the actual application process, the design of the above mold clamping structure still has deficiencies. Since the molds need to be frequently replaced at the production site to produce different products, the ejector pins, as mold accessories, also need to be replaced accordingly. Although the rib plate design of the above two-plate structure can effectively improve the structural strength, it does not fully consider the problem that there is a lack of space for manually replacing the ejector pins between the rib plate and the moving template after adding the ejector pin mechanism between the rib plate and the ejector guide plate. During actual maintenance, the disassembly and assembly of the ejector pins are extremely inconvenient, affecting work efficiency. Summary of the Utility Model

[0005] To solve the problems existing in the prior art, the first object of the utility model is to provide a two-plate structure for a die-casting machine, which can reserve space for the disassembly, assembly, and replacement of ejector pins while having excellent structural strength and rigidity, and improve the maintenance convenience.

[0006] The second object of the utility model is to provide a die-casting machine having the above two-plate structure for a die-casting machine.

[0007] The technical solution for the present utility model to solve the problem is to provide a two-plate structure for a die-casting machine, which includes a moving template, a connecting mechanism for connecting the toggle link mechanism of the die-casting machine, and an ejector pin mechanism for ejecting products; the ejector pin mechanism includes a plurality of ejector pins and an ejector guide plate for mounting the ejector pins. A plurality of ejector pin holes are provided on the moving template, and the ejector pins pass through the ejector pin holes and abut against the internal structure of the mold; the connecting mechanism includes two connecting parts respectively provided at both ends of the moving template. The connecting parts are provided with large locking shaft holes for connecting the toggle link mechanism. It is characterized in that a rib plate for strengthening the rigidity of the two-plate structure is provided between the two connecting parts; the rib plate is located on the side of the ejector guide plate away from the moving template, and the gap between the ejector guide plate and the rib plate forms a disassembly and assembly area for disassembling and assembling the ejector pins.

[0008] Further, the two-plate structure for a die-casting machine provided by the present utility model may also have the following characteristics: the distance between the rib plate and the ejector guide plate is not less than 150 mm.

[0009] Further, the two-plate structure for a die-casting machine provided by the present utility model may also have the following characteristics: a threaded blind hole is provided at the end of the ejector pin, and a corresponding light hole is provided on the ejector guide plate; the ejector guide plate and the ejector pin are connected by screws sequentially passing through the light hole and the threaded blind hole.

[0010] Further, the two-plate structure for a die-casting machine provided by the present utility model may also have the following characteristics: it further includes a hydraulic mechanism for driving the ejector pin mechanism. The hydraulic mechanism includes at least one ejector cylinder; the ejector cylinder includes a cylinder barrel and a piston rod provided in the cylinder barrel, and the piston rod is connected to the ejector guide plate.

[0011] Further, the two-plate structure for a die-casting machine provided by the present utility model may also have the following characteristics: a through hole for the cylinder barrel to pass through is provided on the rib plate, and the hole wall of the through hole abuts against the middle part of the cylinder barrel.

[0012] Further, the two-plate structure for a die-casting machine provided by the present utility model may also have the following characteristics: the cylinder barrel and the rib plate are detachably connected.

[0013] Further, the two-plate structure for a die-casting machine provided by the present utility model may also have the following characteristics: the connecting part includes a conduction structure for changing the conduction direction of the clamping force. The conduction structure is an inclined surface formed on the connecting part, and the inclined surface is inclined inward toward the moving template.

[0014] Further, the two-plate structure for a die-casting machine provided by the present utility model may also have the following characteristics: reinforcing parts for increasing the rigidity of the connecting mechanism are respectively provided on both sides of the connecting part, and the reinforcing parts are integrally connected with the connecting part.

[0015] Further, the two-plate structure for a die-casting machine provided by the present utility model may also have the following feature: the connecting part and the rib plate are connected through an arc-shaped transition part for reducing stress.

[0016] According to the purpose of the second aspect of the present utility model, the present utility model also provides a die-casting machine, including the above-mentioned two-plate structure for a die-casting machine.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. In this application, by arranging the rib plate on the side of the ejector guide plate away from the moving template and ensuring that there is enough clearance between the two as a disassembly and assembly area, while ensuring the rigidity and structural strength of the two-plate structure, the ejector pin can be replaced individually without disassembling the entire two-plate structure, simplifying the maintenance process of the ejector pin, shortening the equipment downtime, and improving the production efficiency.

[0019] 2. In this application, the size of the disassembly and assembly area is further limited, providing sufficient space for the operator to disassemble, assemble and maintain the ejector pin.

[0020] 3. In this application, the connection method of matching the threaded blind hole at the end of the ejector pin with the through hole on the ejector guide plate is adopted, and the operator can directly perform the operation of screwing in or out the screw in the disassembly and assembly area to achieve the rapid replacement of the ejector pin. Similarly, it can also be that the ejector pin passes through the through hole and is connected to the ejector guide plate through a nut, and the replacement can be carried out by disassembling and assembling the nut during disassembly and assembly. No complex disassembly steps are required, effectively simplifying the maintenance operation process.

[0021] 4. In this application, by setting the hole wall of the through hole to abut against the middle part of the cylinder barrel, that is, arranging the rib plate in the middle part of the cylinder barrel instead of the end part, it can be avoided that the setting of the disassembly and assembly area affects the original position of the oil cylinder, and the limited space inside the die-casting machine can be effectively utilized.

[0022] 5. In this application, by setting the reinforcing part, the structural thickness of the connecting mechanism is increased, thereby improving the structural strength and rigidity of the entire two-plate structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present utility model and are used together with the description to explain the principles of the present utility model. In these drawings, like reference numerals are used to represent like elements. The following drawings are some embodiments of the present utility model, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a structural schematic diagram of the present utility model;

[0025] Figure 2 This is the rear view of the present utility model;

[0026] Figure 3 Along Figure 2 The sectional view taken along the section line A-A shown.

[0027] In the figure:

[0028] 1. Moving template; 11. Ejector pin hole; 2. Connecting mechanism; 21. Connecting part; 22. Conducting structure; 23. Large locking shaft hole; 3. Ejector pin mechanism; 31. Ejecting guide plate; 32. Ejector pin; 33. Screw; 4. Rib plate; 41. Through hole; 5. Disassembly and assembly area; 6. Ejecting oil cylinder; 61. Cylinder barrel; 62. Piston rod; 63. Cylinder head; 7. Reinforcing part; 8. Arc transition part. Specific embodiments

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, 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 some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] The present utility model provides a two-plate structure for a die-casting machine, and the specific structure is as follows:

[0031] As Figures 1-3As shown in the figure, the two-plate structure for a die-casting machine includes a moving template 1, a connecting mechanism 2 for driving the moving template 1, and an ejector pin mechanism 3 for ejecting products; the ejector pin mechanism 3 includes a plurality of ejector pins 32 and an ejector guide plate 31 for mounting the ejector pins 32. A plurality of ejector pin holes 11 are provided on the moving template 1, and the ejector pins 32 pass through the ejector pin holes 11 and are in contact with the internal structure of the mold. In order to improve the structural strength of the connecting mechanism 2, the connecting mechanism 2 includes two connecting parts 21 respectively provided at both ends of the moving template 1. A large locking shaft hole 23 for connecting the toggle link mechanism of the die-casting machine is provided on the connecting part 21. A rib plate 4 for strengthening the structural strength of the connecting mechanism 2 is provided between the two connecting parts 21; the rib plate 4 is located on the side of the ejector guide plate 31 away from the moving template 1, and the gap between the ejector guide plate 31 and the rib plate 4 forms a disassembly and assembly area 5 for disassembling and assembling the ejector pins 32. Compared with the problem of inconvenient disassembly and assembly of the ejector pins 32 caused by the original tight arrangement of the rib plate 4 and the ejector guide plate 31, in this application, by providing the disassembly and assembly area 5, the operator can reach in and replace the ejector pins 32, simplifying the maintenance process of the ejector pins 32, thereby improving production efficiency. To ensure that sufficient space is provided for the operator to perform the disassembly, assembly and maintenance work of the ejector pins 32, the length of the disassembly and assembly area 5 is further preferably selected, that is, the distance between the rib plate 4 and the ejector guide plate 31 is not less than 150 mm.

[0032] In some embodiments, as Figure 3 shown, a threaded blind hole is provided at the end of the ejector pin 32, and a corresponding light hole is provided on the ejector guide plate 31; the ejector guide plate 31 and the ejector pin 32 are connected by a screw 33 that sequentially passes through the light hole and the threaded blind hole, which can realize the reliability of the detachable connection between the ejector pin 32 and the ejector guide plate 31, and ensure that the operator can directly perform the operation of screwing in or out the screw 33 in the disassembly and assembly area 5 during disassembly and assembly, so as to realize the rapid replacement of the ejector pin 32 without complex disassembly steps, simplifying the maintenance operation process.

[0033] In some other embodiments, a light hole is provided on the ejector guide plate 31, the ejector pin 32 is inserted through the light hole and is connected to the ejector guide plate 31 by a nut. Similarly, while ensuring the connection stability between the ejector pin 32 and the ejector guide plate 31, it can ensure that the operator can directly disassemble and assemble the nut in the disassembly and assembly area 5 to realize the rapid replacement of the ejector pin 32.

[0034] In some embodiments, as Figure 3 shown, the two-plate structure for a die-casting machine further includes a hydraulic mechanism for driving the ejector pin mechanism 3. The hydraulic mechanism includes an ejector cylinder 6. The number of ejector cylinders 6 can be one or more. In this embodiment, one ejector cylinder 6 is preferably used; the ejector cylinder 6 includes a cylinder barrel 61 and a piston rod 62 provided in the cylinder barrel 61. The piston rod 62 is connected to the ejector guide plate 31 and is used to push the ejector guide plate 31, and then the ejector guide plate 31 drives the ejector pins 32 to eject the casting when the casting is demolded.

[0035] Conventional die-casting machines often have the rib plate 4 provided at the end of the ejection cylinder 6 to serve as the mounting plate or support plate for the ejection cylinder 6. Since the present utility model has provided a disassembly and assembly area 5, in order to avoid the setting of the disassembly and assembly area 5 affecting the original position of the cylinder, in some embodiments, preferably, the rib plate 4 is provided with a through hole 41 for the cylinder barrel 61 to pass through, and the hole wall of the through hole 41 abuts against the middle part of the cylinder barrel 61, which can effectively utilize the limited space inside the die-casting machine.

[0036] As a further improvement of the above embodiment, for the convenience of disassembly and assembly of the ejection cylinder 6, the cylinder barrel 61 and the rib plate 4 are detachably connected. In a specific embodiment, as Figure 1 shown, the end of the cylinder barrel 61 is provided with a cylinder head 63, and the cylinder head 63 is provided with a plurality of cylinder head 63 threaded holes. The rib plate 4 is provided with corresponding rib plate 4 threaded holes, and the cylinder head 63 and the rib plate 4 are connected by bolts sequentially passing through the cylinder head 63 threaded holes and the rib plate 4 threaded holes. In another specific embodiment, a connecting flange is welded around the outside of the cylinder barrel 61, and the rib plate 4 is threadedly connected with the connecting flange.

[0037] In some embodiments, as Figure 1 shown, the connecting portion 21 includes a conduction structure 22 for changing the conduction direction of the clamping force. The conduction structure 22 is an inclined surface formed on the connecting portion 21, and the inclined surface is inclined inward toward the moving template 1, so that the clamping force is guided closer to the center of the moving template 1, that is, the center (not shown in the entire mold closing structure diagram), which can ensure the rigid strength of the entire structure, ensure that the bending moment borne by the center of the mold surface is reduced, the stress is decreased, and the working life of the two-plate structure is improved.

[0038] In some embodiments, as Figure 1 shown, both sides of the connecting portion 21 are respectively provided with reinforcing portions 7. The reinforcing portions 7 are integrally connected with the connecting portion 21, and the rigidity of the two-plate structure is increased by increasing the thickness of the connecting mechanism 2.

[0039] In some embodiments, as Figure 1 shown, the connecting portion 21 and the rib plate 4 are connected by an arc-shaped transition portion 8 for reducing stress. The arc-shaped transition portion 8 can form a smooth transition at the connection between the connecting portion 21 and the rib plate 4, which helps to disperse stress concentration, avoid local high stress at the connection point, reduce cracks or fractures caused by stress concentration, and improve the durability and reliability of the overall structure.

[0040] The present utility model also provides a die-casting machine, including the two-plate structure for the die-casting machine as described above.

[0041] The content described above can be implemented alone or in various combinations, and these variant ways are all within the protection scope of the present utility model.

[0042] In the description of the present invention, it should be noted that relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0043] In the description of the present invention, it should also be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a number of" is two or more.

[0044] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific embodiments of the present utility model are only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. A two-plate structure for a die-casting machine, comprising a movable plate (1), a connecting mechanism (2) for connecting a toggle link mechanism of the die-casting machine, and an ejector mechanism (3) for ejecting a product; the ejector mechanism (3) comprises a plurality of ejector pins (32) and an ejector guide plate (31) for mounting the ejector pins (32); the movable plate (1) is provided with a plurality of ejector pin holes (11); the ejector pins (32) pass through the ejector pin holes (11) and abut against an internal structure of the mold; the connecting mechanism (2) comprises two connecting parts (21) respectively provided at two ends of the movable plate (1); the connecting part (21) is provided with a large locking shaft hole (23) for connecting the toggle link mechanism; and the characteristics are as follows: A rib plate (4) for reinforcing the structural strength of the connecting mechanism (2) is provided between the two connecting portions (21); the rib plate (4) is located on a side of the ejection guide plate (31) away from the movable plate (1), and a gap between the ejection guide plate (31) and the rib plate (4) forms a disassembly area (5) for disassembling and assembling the ejector pin (32).

2. The two-plate structure for a die-casting machine according to claim 1, characterized in that: The distance between the rib plate (4) and the ejection guide plate (31) is not less than 150 mm.

3. The two-plate structure for a die-casting machine according to claim 1, characterized in that: The end of the ejector pin (32) is provided with a threaded blind hole, and the ejector guide plate (31) is provided with a light hole corresponding thereto; the ejector guide plate (31) and the ejector pin (32) are connected by means of a screw (33) which passes through the light hole and the threaded blind hole in sequence.

4. The two-plate structure for a die-casting machine according to claim 1, characterized in that: It also includes a hydraulic mechanism for driving the ejector mechanism (3), the hydraulic mechanism including at least one ejection cylinder (6); the ejection cylinder (6) includes a cylinder barrel (61) and a piston rod (62) disposed in the cylinder barrel (61), and the piston rod (62) is connected to the ejection guide plate (31).

5. The two-plate structure for a die-casting machine according to claim 4, characterized in that: The rib plate (4) is provided with a through hole (41) for the cylinder barrel (61) to pass through, and the hole wall of the through hole (41) abuts against the middle of the cylinder barrel (61).

6. The two-plate structure for a die casting machine according to claim 4, characterized in that: The cylinder (61) is detachably connected to the rib plate (4).

7. The two-plate structure for a die-casting machine according to claim 1, characterized in that: The connecting portion (21) comprises a conducting structure (22) for changing the direction of conduction of the clamping force, wherein the conducting structure (22) is an inclined surface formed on the connecting portion (21), and the inclined surface is inclined inwardly toward the movable mold plate (1).

8. The two-plate structure for a die-casting machine according to claim 1, characterized in that: Reinforcement parts (7) for increasing the rigidity of the connection mechanism (2) are respectively provided on both sides of the connection part (21); the reinforcement parts (7) are integrally connected to the connection part (21).

9. The two-plate structure for a die-casting machine according to claim 1, characterized in that: The connecting portion (21) is connected to the rib plate (4) via a cambered transition portion (8) for reducing stress.

10. A die casting machine, characterized in that: It comprises a two-plate structure for a die casting machine as described in any one of claims 1-9.

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