Ejector rod mechanism for aluminum brake caliper casting mold

Abstract

The utility model discloses an ejector rod mechanism for an aluminum brake caliper casting mold, which comprises an ejector rod assembly, the ejector rod assembly is of a split structure, a linear bearing is arranged on the periphery of the ejector rod assembly positioned in the casting mold, a heat insulation pad is arranged on the periphery of the linear bearing, the end part of the ejector rod assembly extends out of the linear bearing, and the end part of the ejector rod assembly is connected with the heat insulation pad. And the ports of the linear bearing and the heat insulation pad are flush with each other, and threaded caps are arranged at the ports to fix the linear bearing and the heat insulation pad. The ejector rod mechanism for the aluminum brake caliper casting mold can effectively solve a series of problems that after an ejector rod of an existing brake caliper casting mold is abraded, the ejector rod is inconsistent in ejection length, prone to deformation due to clamping stagnation, difficult to replace and the like.

Description

Technical Field

[0001] This utility model relates to the field of casting equipment technology, and in particular to a push rod mechanism for casting molds of aluminum brake calipers. Background Technology

[0002] Aluminum brake calipers are typically formed by casting. After the casting is formed in the mold cavity, the ejector system pushes the ejector pins upward, which in turn push the casting to overcome the friction between the casting and the mold cavity wall, allowing the casting to smoothly detach from the mold and complete the demolding process. Depending on the process requirements, there are usually multiple ejector pins in the same mold, and the lengths of the ejector pins are also different.

[0003] The existing casting process has the following main drawbacks: 1. The clearance between the ejector pin and the mold is very small, which requires high precision in mold manufacturing and installation. Otherwise, the ejector pin will "stick" and deform under the thrust. 2. The top surface of the ejector pin will wear down and shorten during operation, which leads to inconsistent ejection distances of different ejector pins and ultimately causes the blank to be ejected at an angle, which can easily damage the blank surface. 3. When the ejector pin is deformed or worn, the entire mold needs to be disassembled to replace it, which is a relatively complicated, time-consuming and labor-intensive process. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a push rod mechanism for aluminum brake caliper casting molds, which can effectively solve a series of problems such as inconsistent ejection length after wear of the push rod in existing brake caliper casting molds, easy deformation due to "jamming", and difficulty in replacement.

[0005] The technical solution provided by this utility model is as follows:

[0006] A push rod mechanism for casting molds of aluminum brake calipers includes a push rod assembly, which is a split structure. A linear bearing is provided on the periphery of the push rod assembly located inside the casting mold. A heat insulation pad is provided on the periphery of the linear bearing. The end of the push rod assembly extends to the outside of the linear bearing. The ends of the linear bearing and the heat insulation pad are flush and are fixed with threaded caps at the ends.

[0007] Preferably, the push rod assembly is a two-section structure, with the upper section and the lower section connected by threads. The lower end of the upper section is provided with a threaded hole, and the upper end of the lower section extends into the threaded hole.

[0008] Preferably, the lower section structure is provided with a rotating hole.

[0009] Preferably, a replaceable open gasket is provided at the connection between the upper and lower structures.

[0010] Preferably, the heights of the linear bearing and the heat insulation pad are both positively correlated with the thickness of the casting mold.

[0011] This invention has the following advantages over the prior art:

[0012] The push rod mechanism for aluminum brake caliper casting mold of this utility model first adds linear bearings, heat insulation pads and threaded caps to the existing aluminum brake caliper casting mold, and then changes the push rod assembly from the common integral type to a segmented structure and connects it with threads. This not only solves the problem of push rod "jamming" and deformation, but also avoids the problem of frequent replacement of push rods, which can save a lot of production costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the push rod mechanism for the aluminum brake caliper casting mold in this embodiment of the present invention;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 This is a schematic diagram of the structure of the inserted open gasket in an embodiment of this utility model.

[0017] Figure label:

[0018] 1. Top rod assembly; 11. Rotating hole; 2. Casting mold; 3. Linear bearing; 4. Heat insulation pad; 5. Threaded cap; 6. Open gasket. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figure 1-3As shown, this utility model embodiment provides a push rod mechanism for an aluminum brake caliper casting mold, including a push rod assembly 1. The push rod assembly 1 is a split structure. A linear bearing 3 is provided around the push rod assembly 1 located inside the casting mold 2. A heat insulation pad 4 is provided around the linear bearing 3. The end of the push rod assembly 1 extends to the outside of the linear bearing 3. The ends of the linear bearing 3 and the heat insulation pad 4 are flush and are fixed with threaded caps 5 at the ends. The linear bearing 3 has guiding properties, which can avoid the problem of the push rod assembly 1 getting stuck during operation; the heat insulation pad 4 can ensure the reliability of the linear bearing 3 in high-temperature environments.

[0021] In this embodiment, the push rod assembly 1 is a two-section structure, with the upper section and the lower section connected by threads. The lower end of the upper section is provided with a threaded hole, and the upper end of the lower section extends into the threaded hole.

[0022] In this embodiment, the lower section structure is provided with a rotating hole 11. When it is necessary to adjust the length of the push rod, first use pliers to fix the upper section structure of the push rod assembly 1 (to prevent it from rotating), and then use the operating rod to insert into the rotating hole 11 to rotate the lower section structure of the push rod assembly 1. Under the action of the connecting thread, the total length of the push rod assembly 1 can be adjusted. After the length adjustment is completed, the operating rod can be removed.

[0023] In this embodiment, a replaceable open gasket 6 is provided at the connection between the upper and lower structures.

[0024] In this embodiment, the heights of the linear bearing 3 and the heat insulation pad 4 are positively correlated with the thickness of the casting mold 2. The appropriate heights of the linear bearing 3 and the heat insulation pad 4 are selected according to the thickness of the casting mold 2.

[0025] When using the ejector mechanism for the aluminum brake caliper casting mold, after the ejector assembly 1 wears and shortens, the upper section of the ejector assembly 1 can be fixed first. Then, the lower section of the ejector assembly 1 can be rotated counterclockwise through the rotating hole 11 of the lower section. Under the action of the thread, the upper section of the ejector assembly 1 will move upward. Finally, according to the wear of the ejector assembly 1, a shim 6 of appropriate thickness is inserted into the gap between the upper and lower sections of the ejector assembly 1 (e.g., ...). Figure 3 (as shown), and tighten the connecting thread clockwise; in this way, the complicated replacement process of the push rod assembly 1 can be avoided, saving a lot of production costs.

[0026] In this embodiment, the thickness (in mm) of the open gasket 6 is designed with 10 specifications: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1. An open gasket 6 with a suitable thickness can be selected according to the wear of the push rod assembly 1.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ejector mechanism for an aluminum brake caliper casting mold, characterized by, The assembly includes a push rod assembly, which is a split structure. A linear bearing is provided around the push rod assembly located inside the casting mold. A heat insulation pad is provided around the linear bearing. The end of the push rod assembly extends outside the linear bearing. The ends of the linear bearing and the heat insulation pad are flush and are fixed with threaded caps at the ends.

2. The ejector rod mechanism for an aluminum brake caliper casting mold according to claim 1, characterized in that, The top rod assembly is a two-section structure, with the upper section and the lower section connected by threads. The lower end of the upper section has a threaded hole, and the upper end of the lower section extends into the threaded hole.

3. The ejector rod mechanism for an aluminum brake caliper casting mold according to claim 2, characterized in that, The lower section structure is provided with a rotating hole.

4. The ejector rod mechanism for an aluminum brake caliper casting mold according to claim 2, characterized by, The connection between the upper and lower sections is provided with a replaceable open gasket.

5. The ejector rod mechanism for an aluminum brake caliper casting mold according to any one of claims 1 to 4, characterized in that, The heights of the linear bearing and the heat insulation pad are both positively correlated with the thickness of the casting mold.

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