A moving mold core-pulling structure

Abstract

This utility model discloses a moving mold core-pulling structure, belonging to the field of mold making. It includes a moving mold core-pulling drive mechanism mounted on a moving mold base plate. The piston rod of the moving mold core-pulling drive mechanism moves in the same direction as the axis of the oblique hole on the casting. The piston rod of the moving mold core-pulling drive mechanism is connected to a moving mold slider. The lower end of the moving mold core passes through the moving mold core and is fixedly connected to the moving mold slider. The purpose of this utility model is to provide a moving mold core-pulling structure that is compact and provides active control over oblique core pulling.

Description

Technical Field

[0001] This utility model relates to the field of molds, specifically a moving mold core-pulling structure. Background Technology

[0002] like Figure 1 The shell-type castings shown often require the formation of oblique holes at an angle to the mold opening direction. Current technologies mostly employ a "passive" core-pulling method, where the core-pulling power source is the mold opening. This method is limited by the tonnage of the die-casting machine, making it unable to provide sufficient and stable core-pulling force, and also lacks precise control over the core-pulling stroke and speed. Alternatively, the power source of the core-pulling mechanism can be placed outside the mold, achieving core pulling through connecting rods or wedge mechanisms. This requires space outside the mold, potentially affecting part removal, and also results in a more complex structure. Utility Model Content

[0003] The purpose of this invention is to address the above problems by providing a moving mold core-pulling structure that is compact and actively controls the oblique core-pulling.

[0004] To achieve the above objectives, the technical solution adopted in this application is: a moving mold core-pulling structure, including a moving mold core-pulling drive mechanism mounted on a moving mold base plate of the mold. The piston rod of the moving mold core-pulling drive mechanism moves in the same direction as the axis of the inclined hole on the casting. The piston rod of the moving mold core-pulling drive mechanism is connected to a moving mold slider. The lower end of the moving mold core passes through the moving mold core and is fixedly connected to the moving mold slider. Active core pulling is achieved through the moving mold core-pulling drive mechanism. Furthermore, the moving mold core-pulling drive mechanism is located between the moving mold base plate and the moving mold sleeve plate, thus not occupying external space of the mold and eliminating the need for connecting rods or wedge mechanisms, thereby simplifying the structure and making the core-pulling structure compact.

[0005] Furthermore, a guide portion is provided at the lower end of the moving mold plate, and an inclined groove is provided on the side wall of the guide portion to cooperate with the moving mold slider, so as to achieve precise guidance when the moving mold slider is pulled out or reset.

[0006] Furthermore, to enhance safety, a movable part is also included. This movable part moves axially along the piston rod of the moving mold core-pulling drive mechanism. A trigger part is provided on the movable part, and a position detection unit is located on one side of the trigger part's movement path. When the movable part reaches a set stroke point with the piston rod, the trigger part enters the sensing area of ​​the position detection unit, generating a positioning signal to precisely control the stroke of the moving mold core and prevent insufficient core pulling or impact.

[0007] Furthermore, two triggering units are spaced apart along the moving direction of the moving unit, thereby enabling the detection of both core-pulling and reset states.

[0008] The beneficial effects of this application are: active core pulling is achieved through the moving mold core pulling drive mechanism. At the same time, the moving mold core pulling drive mechanism is set between the moving mold base plate and the moving mold sleeve plate, which does not occupy the external space of the mold, nor does it require the setting of connecting rods or wedge mechanisms, thereby simplifying the structure and making the core pulling structure compact. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the casting structure.

[0010] Figure 2 This is a schematic diagram of the rear mold side view structure.

[0011] Figure 3 This is a schematic diagram of the installation of the moving mold core-pulling structure.

[0012] Figure 4 This is a three-dimensional structural diagram of the moving mold core-pulling structure.

[0013] Figure 5 This is a side view schematic diagram of the moving mold core-pulling structure.

[0014] Figure 6 for Figure 5 A schematic diagram of the right-side structure.

[0015] The text labels in the figure represent: 1. Casting; 103. Angled hole; 301. Moving mold plate; 302. Moving mold core; 304. Moving mold base plate; 307. Moving mold core; 317. Moving mold core pulling drive mechanism; 318. Moving mold slider; 319. Guide part; 320. Moving part; 321. Trigger part; 322. Position detection unit; 323. Limiting part. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0017] Example 1, such as Figures 2-6 As shown, the specific structure of this embodiment is a moving mold core-pulling structure. In this embodiment, the moving mold core-pulling structure is used for... Figure 1The production of casting 1 shown is illustrated, with an oblique hole 103 provided on casting 1. The moving mold core-pulling structure includes a moving mold core-pulling drive mechanism 317, which can be a hydraulic cylinder, etc. The cylinder body of the moving mold core-pulling drive mechanism 317 is fixedly installed on the moving mold base plate 304. The push plate and ejector pin fixing plate are provided with through holes for avoiding the cylinder body of the moving mold core-pulling drive mechanism 317. The piston rod of the moving mold core-pulling drive mechanism 317 moves in the same direction as the axis of the oblique hole 103 on casting 1. The piston rod of the moving mold core-pulling drive mechanism 317 is connected to the moving mold slider 318. The lower end of the moving mold core 307 passes through the moving mold core 302 and the moving mold sleeve plate 301 in sequence and is fixedly connected to the moving mold slider 318. The lower end of the moving mold sleeve plate 301 is provided with a receiving groove, which provides space for the moving mold slider 318 to move.

[0018] The lower end of the moving mold sleeve plate 301 is provided with guide parts 319 on both sides of the moving mold slider 318. The inner side wall of the guide part 319 is provided with an inclined groove. The upper and lower ends of the inclined groove are open. The inclined groove is in the same direction as the axis of the inclined hole 103. The outer side wall of the moving mold slider 318 is provided with a limiting part 323 that extends into the inclined groove.

[0019] It also includes a movable part 320, which is arranged in the same direction as the oblique hole 103. The movable part 320 moves axially along the piston rod of the moving mold core pulling drive mechanism 317. In this embodiment, a mounting plate is provided on the cylinder of the moving mold core pulling drive mechanism 317, and a support is provided on the mounting plate. The movable part 320 is a rod-shaped structure that passes through the support. The lower end of the movable part 320 is connected to the moving mold base plate 304 by a spring. A trigger part 321 is provided on the movable part 320. The trigger part 321 is coaxially arranged with the movable part 320, but the outer diameter of the trigger part 321 is larger than the outer diameter of the movable part 320. A position detection unit 322 is provided on one side of the moving path of the trigger part 321. The position detection unit 322 can be a limit switch or the like. One or two position detection units 322 can be provided. Two trigger parts 321 are provided at intervals along the moving direction of the movable part.

[0020] The position detection unit 322 is connected to the control system via wired or wireless means, enabling the detection signal from the position detection unit 322 to be output to the control system. The control system includes analysis units such as processors, operation interfaces such as operation panels, and communication interfaces. The control system is also used to control the operation of the moving mold core-pulling drive mechanism 317. Before molding, the moving mold slider 318 tilts and moves towards the moving mold core 302, pushing the front end of the moving mold core 307 into the cavity. After molding, the moving mold slider 318 tilts and retracts, pulling the moving mold core 307 out of the cavity, thus obtaining the oblique hole 103 on the casting 1.

[0021] When the moving mold slider 318 moves toward the moving mold core 302, the moving part 320, which is initially pressed downwards, moves upwards under the action of springs, etc. Alternatively, an independent drive mechanism can be provided on the moving mold base plate 304 to drive the moving part 320 to move upwards. When the lower trigger part 321 enters the detection area of ​​the lower position detection unit 322, the upper trigger part 321 is located above the upper position detection unit 322. The lower position detection unit 322 sends the detection signal to the control system. After processing and analyzing the data, the control system outputs a control signal to stop the moving mold core pulling drive mechanism 317 from working. At this time, it means that the moving mold core 307 has completely extended into the cavity.

[0022] During the retraction of the moving mold slider 318, the moving mold slider 318 abuts against the upper end of the moving part 320, thereby driving the moving part 320 to move downward. When the trigger part 321 located at the upper end moves to the detection area of ​​the position detection unit 322 located at the upper end, the position detection unit 322 located at the upper end sends a detection signal to the control system. After processing and analyzing the data, the control system outputs a control signal to stop the moving mold core pulling drive mechanism 317 from working. At this time, it means that the moving mold core 307 core pulling is completed.

[0023] When only one position detection unit 322 is set, the two detection signals at intervals represent the complete insertion of the moving model core 307 into the cavity and the completion of core pulling, respectively.

[0024] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A movable mold core structure, characterized by comprising: The system includes a moving mold core pulling drive mechanism (317) mounted on the moving mold base plate (304). The piston rod of the moving mold core pulling drive mechanism (317) moves in the same direction as the axis of the inclined hole (103) on the casting (1). The piston rod of the moving mold core pulling drive mechanism (317) is connected to the moving mold slider (318). The lower end of the moving mold core (307) passes through the moving mold core (302) and is fixedly connected to the moving mold slider (318).

2. A movable mold core structure according to claim 1, wherein The lower end of the moving mold plate (301) is provided with a guide part (319), and the side wall of the guide part (319) is provided with an inclined groove that cooperates with the moving mold slider (318).

3. The movable mold core structure according to claim 1, wherein It also includes a moving part (320), which moves axially along the piston rod of the moving mold core pulling drive mechanism (317). The moving part (320) is provided with a trigger part (321), and a position detection unit (322) is provided on one side of the moving path of the trigger part (321).

4. The movable mold core structure according to claim 3, wherein The triggering part (321) is provided at intervals along the moving direction of the moving part.

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