Die-casting die multi-angle connecting rod core-pulling device

Abstract

According to the multi-angle connecting rod core-pulling device for the die-casting die, the connecting rod mechanism is arranged in the guide sleeve, the first connecting rod and the second connecting rod are respectively connected with the two pulling cores with the angle, and the first connecting rod and the second connecting rod can move in the connecting rod cavity; during core pulling, self-adaptive angle adjustment can be carried out according to different core pulling angles, it is guaranteed that the movement angle during core pulling is matched with the angle of a pulled core, and then it is guaranteed that the pulled core is not damaged. By means of the structure, core pulling of the mold cores in different directions can be completed at the same time, the core pulling process is stable, meanwhile, the die-casting die structure is simplified, the die manufacturing cost is saved, the production efficiency of die castings is improved, and the qualified rate of products is guaranteed. In addition, the multi-angle connecting rod core-pulling device for the die-casting die is convenient in structure, convenient to install, replace and maintain, and suitable for large-scale industrial use and popularization.

Description

Technical Field

[0001] The utility model belongs to the field of high-pressure casting, and particularly relates to a multi-angle connecting rod core-pulling device for a die-casting mold. Background Art

[0002] High pressure casting is an advanced metal forming process with little or no cutting. It has many advantages such as high production efficiency, high casting tolerance, good surface roughness, small machining allowance, etc. When the product contains a cavity structure that is inconsistent with the mold parting direction, it is necessary to reasonably design the core pulling mechanism according to the size, angle and core pulling stroke of the cavity to ensure the forming of the die casting structure.

[0003] In the die-casting mold mechanism design of the prior art, a single core-pulling mechanism is used to complete the product structure at a certain lateral angle; when the product has multiple cavity structures that require core pulling, multiple core-pulling mechanisms are often required. However, when the angles between a pair of core pulls in the cavity structure on the same side of the product are different, the existing core-pulling mechanism has poor applicability due to structural limitations, and cannot ensure that all cavities can complete core pulling. Some cavities can only be achieved by machining. This method is prone to unstable production and numerous processes, which in turn leads to low product qualification rate and production efficiency, and high parts manufacturing costs. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-angle connecting rod core pulling device for a die-casting mold to solve the problems that the core pulling device in the prior art has poor applicability and cannot complete the core pulling operation of all cavities, resulting in low overall efficiency, low product qualification rate and high processing cost.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A multi-angle connecting rod core pulling device for a die casting mold, comprising a mold frame, wherein a mold core is arranged inside the mold frame and a hole cavity is opened on the mold frame; a pair of core pullings are arranged on the mold core; the rear parts of the pair of core pullings are both located inside the hole cavity, and the front ends both penetrate the side wall of the mold core and enter the mold cavity inside the mold core; a connecting hole is opened at the rear part of the core pulling, and an angle exists between the two core pullings; and a core pulling device is also included; the core pulling device comprises a guide sleeve with open ends, and the guide sleeve is detachably installed inside the hole cavity;

[0007] A connecting rod cavity is provided at the front of the guide sleeve, and a sliding cavity is provided at the rear; a connecting shaft capable of sliding forward and backward along the sliding cavity is provided in the sliding cavity, and the rear end of the connecting shaft is coaxially connected to the output shaft of the oil cylinder; a connecting rod mechanism is provided at the front end of the connecting shaft, the connecting rod mechanism is located in the connecting rod cavity, and the connecting rod mechanism can connect two core pullers at the same time.

[0008] The present utility model further has the following features:

[0009] Further, a rotating shaft is provided at the front end of the connecting shaft, and the link mechanism includes a first link and a second link;

[0010] The connecting shaft is rotatably connected to the rear parts of the first link and the second link through the rotating shaft; both the first link and the second link are located inside the link cavity;

[0011] Locking pin mounting grooves are provided at the front parts of the first link and the second link, and the first link and the second link are respectively connected to a core-pulling connecting sleeve through their own locking pin mounting grooves;

[0012] The core-pulling connecting sleeve is a cylindrical structure with an open front end, and mounting holes corresponding to the connecting holes of the core-pulling are provided on the core-pulling connecting sleeve; the core-pulling connecting sleeve can be sleeved on the corresponding core-pulling, and the core-pulling connecting sleeve and the corresponding core-pulling can be fixedly connected by means of a fixing pin passing through the corresponding mounting hole and connecting hole at the same time;

[0013] A core-pulling locking pin is provided at the rear part of the core-pulling connecting sleeve, and the core-pulling locking pin can enter the corresponding locking pin mounting groove and slide along the locking pin mounting groove.

[0014] Further, an annular oil cylinder connecting plate is connected to the rear end of the guide sleeve;

[0015] The oil cylinder connecting plate is detachably mounted on the side wall of the mold frame by means of bolt connection and covers the hole cavity; the oil cylinder is arranged at the rear side of the oil cylinder connecting plate, and the output shaft of the oil cylinder enters the inside of the guide sleeve from the annular empty area in the middle of the oil cylinder connecting plate and is connected to the rear end of the connecting shaft.

[0016] Further, the output shaft of the oil cylinder is connected to the rear end of the connecting shaft through a coupling

[0017] Compared with the prior art, the present utility model has the following technical effects:

[0018] The multi-angle connecting rod core-pulling device of the die-casting mold of the present utility model is provided with a connecting rod mechanism inside the guide sleeve. The first connecting rod and the second connecting rod are respectively used to connect two core-pullings with an angle. Since the first connecting rod and the second connecting rod can move inside the connecting rod cavity, during core-pulling, an adaptive angle adjustment can be performed according to different core-pulling angles, ensuring that the movement angle during core-pulling matches the angle of the core-pulling itself, thereby ensuring that the core-pulling will not be damaged. This kind of structure can realize the simultaneous core-pulling of cores in different directions. While the core-pulling process is stable, it also simplifies the structure of the die-casting mold, saves the mold manufacturing cost, and improves the production efficiency of die-castings and ensures the qualified rate of products. In addition, the multi-angle connecting rod core-pulling device of the die-casting mold of the present utility model has a convenient structure, is convenient for installation, replacement, maintenance and repair, and is suitable for large-scale industrial use and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the connection between the multi-angle connecting rod core-pulling device of the die-casting mold of the present utility model and the mold;

[0020] Figure 2 is a schematic cross-sectional structural diagram of the connection between the multi-angle connecting rod core-pulling device of the die-casting mold of the present utility model and the core-pulling.

[0021] The meanings of the reference numerals in the figure are as follows:

[0022] 1. mold frame; 2. mold core; 201. cavity; 3. core-pulling; 4. guide sleeve; 401. connecting rod cavity; 5. connecting shaft; 6. oil cylinder; 7. rotating shaft; 8. first connecting rod; 9. second connecting rod; 10. locking pin installation groove; 11. core-pulling connecting sleeve; 12. core-pulling locking pin; 13. oil cylinder connecting plate; 14. coupling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] It should be noted that all components in the present utility model, unless otherwise specified, are all components known in the prior art. For example, the oil cylinder adopts a commonly known oil cylinder.

[0024] The following are specific embodiments of the present utility model. It should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solution of the present application fall within the protection scope of the present utility model.

[0025] As Figure 1 and Figure 2 shown, a multi-angle connecting rod core-pulling device of a die-casting mold includes a mold frame 1. A mold core 2 is arranged inside the mold frame 1, and a hole cavity is opened on the mold frame 1; a pair of core-pullings 3 are arranged on the mold core 2; the rear ends of the pair of core-pullings 3 are both located inside the hole cavity, and the front ends both penetrate through the side wall of the mold core 2 and enter the cavity 201 inside the mold core 2; a connection hole is opened at the rear of the core-pulling 3, and there is an included angle between the two core-pullings 3; its characterized in that, a core-pulling device is further included.

[0026] The core-pulling device includes a cylindrical guide sleeve 4 with both ends open, and the guide sleeve 4 is detachably installed inside the hole cavity;

[0027] A connecting rod cavity 401 is provided at the front part inside the guide sleeve 4, and a sliding cavity is provided at the rear part; a connecting shaft 5 capable of sliding back and forth along the sliding cavity is arranged in the sliding cavity, and the rear end of the connecting shaft 5 is coaxially connected to the output shaft of the oil cylinder 6; a connecting rod mechanism is arranged at the front end of the connecting shaft 5, the connecting rod mechanism is located in the connecting rod cavity 401, and the connecting rod mechanism can connect two core-pulling parts 3 simultaneously. The connecting rod mechanism includes a first connecting rod 8 and a second connecting rod 9.

[0028] Furthermore, a rotating shaft 7 is arranged at the front end of the connecting shaft 5, and the connecting shaft 5 is rotationally connected to the rear parts of the first connecting rod 8 and the second connecting rod 9 through the rotating shaft 7; both the first connecting rod 8 and the second connecting rod 9 are located inside the connecting rod cavity 401.

[0029] Locking pin installation grooves 10 are arranged at the front parts of the first connecting rod 8 and the second connecting rod 9, and the first connecting rod 8 and the second connecting rod 9 are respectively connected to a core-pulling connecting sleeve 11 through their own locking pin installation grooves 10.

[0030] The core-pulling connecting sleeve 11 is a cylindrical structure with an open front end, and installation holes corresponding to the connecting holes of the core-pulling part 3 are arranged on the core-pulling connecting sleeve 11; the core-pulling connecting sleeve 11 can be sleeved on the corresponding core-pulling part 3, and the core-pulling connecting sleeve 11 and the corresponding core-pulling part 3 can be fixedly connected by using a fixing pin to penetrate through the corresponding installation holes and connecting holes simultaneously.

[0031] A core-pulling locking pin 12 is arranged at the rear part of the core-pulling connecting sleeve 11, and the core-pulling locking pin 12 can enter the corresponding locking pin installation groove 10 and slide along the locking pin installation groove 10.

[0032] The following gives a specific implementation manner;

[0033] In a specific embodiment, two core-pulling parts 3 are distributed on the same side of the cavity 201, the minimum distance between them is 12.5 mm, and the formed included angle is 8.6°. In this case, the traditional core-pulling design method cannot arrange two sets of core-pulling mechanisms in a limited space. At this time, it is necessary to use the multi-angle connecting rod core-pulling device of the die-casting mold of the present utility model for core-pulling operation.

[0034] When in use, first, it is necessary to determine the diameters, core-pulling angles and core-pulling strokes of the two core-pulling parts 3 according to the size, angle and depth of the structure of the hole cavity. In order to avoid damage to the core-pulling part 3 during the operation, it is necessary to adjust the direction of the locking pin installation groove 10 and the angle of the core-pulling connecting sleeve 11 to ensure that the angle of the core-pulling connecting sleeve 11 is consistent with the angle of the core-pulling part 3 during core-pulling. In addition, the length of the locking pin installation groove 10 is determined according to the core-pulling distance.

[0035] It should be noted that those skilled in the art are capable of completing the above content based on relevant knowledge in the art.

[0036] According to conventional selection, the connection method of the guide sleeve 4 in the hole cavity is clearance fit. After installing the guide sleeve 4 into the hole cavity, the core-pulling connecting sleeve 11 is sleeved on the corresponding core-pulling 3, and fixed with fixing pins respectively. At this time, the multi-angle connecting rod core-pulling device of the die-casting mold of the present invention has been connected to the core-pulling 3. Connect the output shaft of the oil cylinder 6 to the rear of the connecting shaft 5, and start the oil cylinder 6 to pull the connecting shaft 5. The first connecting rod 8 and the second connecting rod 9 move backward along with the connecting shaft 5. Through this connecting rod structure, the core-pulling locking pin 12 at the rear of the core-pulling connecting sleeve 11 moves in the locking pin installation groove 10, so that the two core-pullings 3 are pulled out from the die core 2 at their corresponding angles to complete the core-pulling operation.

[0037] Since the first connecting rod 8 and the second connecting rod 9 can move in the connecting rod cavity 401, they can make adaptive angle adjustments according to different core-pulling angles during core-pulling, ensuring that the movement angle during core-pulling matches the angle of the core-pulling 3 itself, and thus ensuring that the core-pulling 3 will not be damaged. This structure can realize the simultaneous core-pulling of cores in different directions. While the core-pulling process is stable, it also simplifies the structure of the die-casting mold, saves the mold manufacturing cost, and improves the production efficiency of die-castings and ensures the qualification rate of products. In addition, the multi-angle connecting rod core-pulling device of the die-casting mold of the present invention has a convenient structure, is convenient for installation, replacement, maintenance and repair, and is suitable for large-scale industrial use and promotion.

[0038] As a preferred solution, the rear end of the guide sleeve 4 is connected with an annular oil cylinder connecting plate 13;

[0039] The oil cylinder connecting plate 13 is detachably installed on the side wall of the die frame 1 by means of bolt connection. The rear side of the oil cylinder connecting plate 13 is connected with an oil cylinder 6. The output shaft of the oil cylinder 6 enters the inside of the guide sleeve 4 from the annular empty area of the oil cylinder connecting plate 13 and is connected to the rear end of the connecting shaft 5. This structure enhances the convenience of loading and unloading the guide sleeve 4 while ensuring the stability during installation.

[0040] As a preferred solution, the output shaft of the oil cylinder 6 is connected to the rear end of the connecting shaft 5 through a coupling 14, further improving the connection strength between the oil cylinder 6 and the connecting shaft 5.

Claims

1. A multi-angle connecting rod core-pulling device for a die-casting mold, comprising a mold frame (1), wherein a mold core (2) is arranged inside the mold frame (1), and a hole cavity is formed in the mold frame (1); a pair of core-pulling members (3) are arranged on the mold core (2); the rear parts of the pair of core-pulling members (3) are both located inside the hole cavity, and the front ends of both penetrate through the side wall of the mold core (2) and enter the cavity (201) inside the mold core (2); a connecting hole is formed in the rear part of the core-pulling member (3), and there is an included angle between the two core-pulling members (3); it is characterized in that, It further includes a core-pulling device; the core-pulling device includes a guide sleeve (4) with both ends open, and the guide sleeve (4) is detachably installed inside the hole cavity; A connecting rod cavity (401) is formed in the front part inside the guide sleeve (4), and a sliding cavity is formed in the rear part; a connecting shaft (5) capable of sliding back and forth along the sliding cavity is arranged in the sliding cavity, and the rear end of the connecting shaft (5) is coaxially connected with the output shaft of an oil cylinder (6); a connecting rod mechanism is arranged at the front end of the connecting shaft (5), the connecting rod mechanism is located in the connecting rod cavity (401), and the connecting rod mechanism can connect two core-pullers (3) simultaneously.

2. The multi-angle connecting rod core-pulling device for a die-casting mold according to claim 1, characterized in that, A rotating shaft (7) is arranged at the front end of the connecting shaft (5), and the connecting rod mechanism includes a first connecting rod (8) and a second connecting rod (9); The connecting shaft (5) is rotatably connected with the rear parts of the first connecting rod (8) and the second connecting rod (9) simultaneously through the rotating shaft (7); both the first connecting rod (8) and the second connecting rod (9) are located inside the connecting rod cavity (401); Locking pin mounting grooves (10) are arranged at the front parts of the first connecting rod (8) and the second connecting rod (9), and the first connecting rod (8) and the second connecting rod (9) are respectively connected with a core-puller connecting sleeve (11) through their own locking pin mounting grooves (10); The core-puller connecting sleeve (11) is a cylindrical structure with an open front end, and mounting holes corresponding to the connecting holes of the core-puller (3) are formed on the core-puller connecting sleeve (11); the core-puller connecting sleeve (11) can be sleeved on the corresponding core-puller (3), and the core-puller connecting sleeve (11) and the corresponding core-puller (3) can be fixedly connected by using a fixing pin to penetrate through the corresponding mounting hole and connecting hole simultaneously; A core-puller locking pin (12) is arranged at the rear part of the core-puller connecting sleeve (11), and the core-puller locking pin (12) can enter the corresponding locking pin mounting groove (10) and slide along the locking pin mounting groove (10).

3. The multi-angle connecting rod core-pulling device for die-casting mold according to claim 2, characterized in that, An annular oil cylinder connecting plate (13) is connected to the rear end of the guide sleeve (4); The oil cylinder connecting plate (13) is detachably installed on the side wall of the mold frame (1) by means of bolt connection and covers the hole cavity; the oil cylinder (6) is arranged at the rear side of the oil cylinder connecting plate (13), and the output shaft of the oil cylinder (6) enters the inside of the guide sleeve (4) from the annular empty area in the middle of the oil cylinder connecting plate (13) and is connected with the rear end of the connecting shaft (5).

4. The multi-angle link core-pulling device for die-casting mold according to claim 3, wherein The output shaft of the oil cylinder (6) is connected with the rear end of the connecting shaft (5) through a coupling (14).

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