Die-casting die for pre-pressing bearing seat

Abstract

The utility model belongs to the technical field of die-casting dies, and particularly relates to a pre-pressing bearing seat die-casting die which comprises a fixed die holder and a movable die holder. The base is located below the fixed die holder, a movable die frame is arranged in the base, a plurality of vertical ejector pin rods are distributed above the movable die frame, the ejector pin rods penetrate through ejector pin holes in the fixed die holder, a supporting plate is fixedly connected to the upper portions of the ejector pin rods, and the outer side of the supporting plate is sleeved with an outer ring frame; a rotating frame is rotatably mounted in the lower end of the ejector pin hole, a fixing ring is rotatably mounted on the outer side of the upper end of the ejector pin hole, the fixing ring is fixedly connected with the outer ring frame through a frame connecting rod at the upper end, an electric telescopic part is mounted in the lower half section of the ejector pin hole, and the movable end of the electric telescopic part is connected to the fixing ring. According to the utility model, the caking state of molten metal in the ejector pin hole can be eliminated in real time after die-casting operation, so that the molten metal is ground into powder, and a product is ejected out and demoulded by the ejector pin after being pre-loosened through a double-section ejection structure, so that the effect of protecting the ejector pin is achieved, and the situation that the ejector pin is stuck and fractured is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, and in particular relates to a pre-tightened bearing seat die casting mold. Background Technology

[0002] Bearing housing die casting molds are special tools used for pressure casting of bearing housings. Molten metal is injected into the mold cavity under high pressure to form the bearing housing. They are mainly used in the automotive, machinery and other fields to produce bearing support components that need to bear loads.

[0003] Currently, during the use of die-casting molds, some molten metal enters the ejector pin holes, which increases the frictional resistance of the ejector pins and makes them prone to jamming and breakage.

[0004] To address the aforementioned issues, this application proposes a pre-compression bearing housing die-casting mold. Utility Model Content

[0005] The purpose of this invention is to provide a pre-compression bearing housing die-casting mold, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a pre-compression bearing seat die casting mold, including a fixed mold base and a movable mold base;

[0008] The base is located below the fixed mold base. It has a movable mold frame inside and multiple vertical ejector pins are distributed above it. The ejector pins pass through the ejector pin holes inside the fixed mold base. A support plate is fixedly connected above the ejector pins, and an outer ring frame is sleeved on its outer side.

[0009] A rotating frame is rotatably mounted inside the lower end of the ejector pin hole, and a fixed ring is rotatably mounted on the outer side of its upper end. The fixed ring is fixedly connected to the outer ring frame through the connecting rod at the upper end. An electric telescopic part is installed inside the lower half of the ejector pin hole, and its movable end is connected to the fixed ring.

[0010] Furthermore, the pin hole is a stepped hole structure with two diameters, and the lower half is a groove structure extending outwards.

[0011] Furthermore, a drive unit is fixedly installed inside the base, and its movable end is fixedly connected to the movable mold frame.

[0012] Furthermore, a transmission gear is rotatably mounted between the base and the fixed mold base, and both its inner and outer sides have toothed structures.

[0013] Furthermore, the internal teeth of the transmission gear mesh with the gear at the upper end of the rotary motor, and the external teeth of the transmission gear mesh with the toothed structure on the outer side of each rotating frame.

[0014] Furthermore, the electric telescopic part is used to drive the rotating frame and the fixed ring to move vertically up and down.

[0015] Furthermore, the outer ring frame covers the outer side and bottom surface of the tray.

[0016] This utility model has the following beneficial effects:

[0017] This invention fills the gap between the outer ring frame and the ejector pin hole, which allows the solidified molten metal to be dispersed by rotation during ejection, thereby reducing the blockage of the ejector pin rod and the support plate. This not only ensures stable product ejection but also prevents jamming and breakage.

[0018] This invention uses an outer ring frame to cover the bottom of the tray, which can pre-lift the product under the action of the electric telescopic part, so that the product is pre-separated from the mold core, thereby reducing the resistance when the ejector rod is lifted, protecting the ejector rod and improving the quality of the demolded product.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the fixed mold base of this utility model;

[0023] Figure 3 This is a schematic diagram of the combined cross-sectional structure of the fixed mold base and the base of this utility model;

[0024] Figure 4 This is a partially enlarged structural diagram of part A of this utility model;

[0025] The attached diagram lists the components represented by each number as follows:

[0026] In the picture:

[0027] 110. Fixed mold base; 111. Ejector pin hole;

[0028] 120. Movable template base;

[0029] 130. Base;

[0030] 210. Support plate; 211. Ejector pin;

[0031] 220. Movable mold frame; 221. Drive unit;

[0032] 230. Transmission gears;

[0033] 240. Rotating frame; 241. Fixed ring; 242. Electric telescopic part; 243. Connecting rod; 244. Outer ring frame. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Please see Figure 1-4 As shown, this utility model is a pre-tightened bearing seat die-casting mold, including a fixed mold base 110 and a movable mold base 120;

[0037] The base 130 is located below the fixed mold base 110. It has a movable mold frame 220 inside and multiple vertical ejector pins 211 distributed above it. The ejector pins 211 pass through the ejector pin holes 111 inside the fixed mold base 110. A support plate 210 is fixedly connected above the ejector pins 211. An outer ring frame 244 is sleeved on the outside of the support plate 210. By rotating the outer ring frame 244, the residual small amount of molten metal between the support plate 210 and the ejector pin holes 111 is eliminated from the clumping state, so that the support plate 210 and the ejector pins 211 below it can be smoothly ejected or retracted.

[0038] A rotating frame 240 is rotatably mounted inside the lower end of the ejector pin hole 111, and a fixing ring 241 is rotatably mounted on the outer side of its upper end. The fixing ring 241 is fixedly connected to the outer ring frame 244 via a connecting rod 243 at the upper end. An electric telescopic part 242 is installed inside the lower half of the ejector pin hole 111, and its movable end is connected to the fixing ring 241. After eliminating the molten metal agglomerates, the telescopic force of the electric telescopic part 242 causes the molded product to loosen beforehand, thereby reducing the resistance and output force during the subsequent operation of the ejector pin rod 211. The electric telescopic part 242 can be an electric telescopic rod, or it can be replaced by a hydraulic lifting rod or other mechanisms.

[0039] Preferably, the pin hole 111 is a stepped hole structure with a double diameter, and the lower half is a groove structure that extends outward, thereby increasing the diameter so as to install the electric telescopic part 242 and other components inside.

[0040] Preferably, a drive unit 221 is fixedly installed inside the base 130, and its movable end is fixedly connected to the movable mold frame 220. The movable module 220 drives multiple ejector pins 211 to move up and down simultaneously.

[0041] Preferably, a transmission gear 230 is rotatably mounted between the base 130 and the fixed mold base 110. Both the inner and outer sides of the transmission gear 230 have toothed structures. The inner teeth of the transmission gear 230 mesh with the gear at the upper end of the rotary motor, and the outer teeth of the transmission gear 230 mesh with the toothed structure on the outer side of each rotating frame 240. Thus, when the rotary motor is running, it can drive each rotating frame 240 to rotate, thereby driving the outer ring frame 244 to rotate.

[0042] Preferably, the electric telescopic part 242 is used to drive the rotating frame 240 and the fixed ring 241 to move vertically up and down, so that the rotating frame 240 can be directly reset after it is separated from the transmission gear 230.

[0043] Preferably, the outer ring 244 covers the outer side and bottom surface of the tray 210. After the ejector pin 211 is ejected, the ground metal debris is collected inside the tray 210 and can be directly cleaned to maintain the next set of die casting operations.

[0044] It is understandable that this utility model can eliminate the clumping state of the molten metal in the ejector pin hole 111 in real time after the die casting operation, grind it into powder, and then, through the double-stage ejection structure, allow the product to be pre-loosened and ejected by the ejector pin to demold, thereby achieving the effect of protecting the ejector pin and preventing the ejector pin from getting stuck or breaking.

[0045] A specific application of the operation process in this embodiment is as follows: After the movable mold base 120 is moved out, the rotary motor built into the base 130 is first driven. Under the meshing action of the gear at its rotating end and the transmission gear 230, the rotational power is transmitted to the rotating frame 240, thereby driving the outer ring frame 244 to rotate via the connecting rod 243 above it, so as to eliminate the molten metal entering the ejector pin hole 111, so that the support plate 210 can be ejected smoothly. Further, under the action of the electric telescopic part 242, the fixed ring 241 drives the rotating frame 240 to move vertically upward, thereby driving the outer ring frame 244 to lift the support plate 210, thereby pushing the pre-compressed bearing seat formed in the fixed mold base 110 upward to achieve the effect of pre-loosening. Then, the drive part 221 drives the ejector pin 211 to push upward via the movable mold base 220, thereby completely ejecting the pre-compressed bearing seat and completing the demolding.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pre-compression bearing housing die-casting mold, characterized in that: It includes a fixed mold base (110) and a movable mold base (120); The base (130) is located below the fixed mold base (110), and has a movable mold frame (220) inside and multiple vertical ejector pins (211) distributed above it. The ejector pins (211) pass through the ejector pin holes (111) inside the fixed mold base (110). A support plate (210) is fixedly connected above the ejector pins (211), and an outer ring frame (244) is sleeved on its outer side. A rotating frame (240) is rotatably installed inside the lower end of the pin hole (111), and a fixing ring (241) is rotatably installed on the outer side of its upper end. The fixing ring (241) is fixedly connected to the outer ring frame (244) through the connecting rod (243) at the upper end. An electric telescopic part (242) is installed inside the lower half of the pin hole (111), and its movable end is connected to the fixing ring (241).

2. The pre-tightened bearing housing die-casting mold according to claim 1, characterized in that: The pin hole (111) is a stepped hole structure with two diameters, and the lower half is a groove structure that extends outward.

3. The pre-tightened bearing housing die-casting mold according to claim 1, characterized in that: The base (130) has a drive unit (221) fixedly installed inside, and its movable end is fixedly connected to the movable mold frame (220).

4. The pre-tightened bearing housing die-casting mold according to claim 1, characterized in that: A transmission gear (230) is rotatably installed between the base (130) and the fixed mold base (110), and both its inner and outer sides are toothed structures.

5. The pre-tightened bearing housing die-casting mold according to claim 4, characterized in that: The internal teeth of the transmission gear (230) mesh with the gear at the upper end of the rotary motor, and the external teeth of the transmission gear (230) mesh with the tooth structure on the outside of each rotating frame (240).

6. The pre-tightened bearing housing die-casting mold according to claim 1, characterized in that: The electric telescopic part (242) is used to drive the rotating frame (240) and the fixed ring (241) to move vertically up and down.

7. The pre-tightened bearing housing die-casting mold according to claim 1, characterized in that: The outer ring frame (244) covers the outer side and bottom surface of the tray (210).

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