Exhaust ejector rod structure

Abstract

The utility model provides an exhaust ejector rod structure which comprises a rod body, one end of the rod body is integrally provided with an ejector head, the other end of the rod body is provided with a push head, the top end face of the ejector head is provided with a top overflow gas overflow groove which is concave inwards and extends in the horizontal direction, and the side face of the top end of the ejector head is provided with a side exhaust groove which is concave inwards and extends in the axial direction. The rear end, close to the ejector piece head, of the rod body is provided with a gas eliminating ring groove communicated with the side exhaust groove, the axial middle of the ejector piece head is provided with an inner exhaust channel extending from the top end of the ejector piece head to the rear end, and the side edge of the inner exhaust channel extends in the radial direction and penetrates through the rod body. The exhaust function is achieved through the top overflow gas overflow groove, the side exhaust grooves, the gas removing ring groove and the internal exhaust channel, multi-way exhaust is achieved, and the exhaust effect is good.

Description

Technical Field

[0001] This utility model relates to the field of metal casting technology, specifically to an exhaust jack structure. Background Technology

[0002] In metal mold casting, shrinkage porosity seriously affects product quality, especially shrinkage porosity caused by air trapping. This is mainly due to the failure to promptly expel air from the mold cavity and sand core during low-pressure casting of aluminum alloy metal molds. Therefore, for metal mold products, good venting of the metal mold cavity is a crucial factor in improving shrinkage porosity. Currently, ejection of metal mold products mainly relies on... Figure 1 The cylindrical ejector pin shown only has an ejection function, that is, to allow the moving mold product to detach from the mold. The ejector pin relies on the gap between its movement and the mold module to release air, so its air release function is relatively weak.

[0003] Therefore, those skilled in the art are dedicated to developing an exhaust top rod structure with good exhaust performance. Summary of the Invention

[0004] The purpose of this invention is to develop an exhaust top rod structure with good exhaust performance.

[0005] The objective of this utility model is achieved through the following solution:

[0006] An exhaust push rod structure includes a rod body, one end of which is integrally provided with a top member head, and the other end of which is provided with a push member head. The top end face of the top member head is provided with a top overflow and venting groove that is recessed inward and extends horizontally, and the top side is provided with a side exhaust groove that is recessed inward and extends axially. The rod body is provided with a degassing ring groove that communicates with the side exhaust groove near the rear end of the top member head. The axial middle part of the top member head is provided with an internal exhaust channel that extends from the top end of the top member head to the rear end, and the side of the internal exhaust channel extends radially and penetrates the rod body.

[0007] Furthermore, a sealing guide ring is provided on the rod body at the rear end of the degassing ring groove.

[0008] Furthermore, the internal exhaust passage extends rearward and beyond the sealing guide ring.

[0009] Furthermore, the degassing ring groove is 0.2-0.5 mm smaller than the diameter of the rod body.

[0010] Furthermore, the depth of the side exhaust groove is 0.2-0.5 mm.

[0011] The advantages of this utility model are:

[0012] 1. The exhaust function is achieved by utilizing the top overflow vent groove, side exhaust groove, degassing ring groove and internal exhaust channel, with multiple exhaust channels and good exhaust effect;

[0013] 2. The top overflow venting groove, side venting groove, and degassing ring groove increase the contact area between the product and the ejector pin, thereby improving the heat transfer effect in this area and achieving better casting demolding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the push rod structure in the background art;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 for Figure 2 The intention behind enlarging point A in the middle;

[0017] Figure 4 This is a front view of the structure of this utility model;

[0018] Figure 5 This is a side view of the structure of this utility model;

[0019] Figure 6 for Figure 5 Sectional view at point BB. Detailed Implementation

[0020] To enable those skilled in the art to understand the features and effects of this application, the terms and expressions used in the specification and claims are explained and defined in general below. Unless otherwise specified, all technical and scientific terms used herein have the ordinary meaning understood by those skilled in the art in this application, and in case of conflict, the definitions in this specification shall prevail.

[0021] The theories or mechanisms described and disclosed herein, whether right or wrong, shall not in any way limit the scope of this application, that is, the content of this application may be implemented without being limited by any particular theory or mechanism.

[0022] In this document, "this application" means "this utility model" or "this disclosure".

[0023] The terms “a,” “an,” “a,” or similar expressions are used herein to describe the components and technical features described in this application. Such descriptions are merely for convenience and to provide a general meaning for the scope of this application. Therefore, such descriptions should be understood to include one or at least one, and the singular includes the plural, unless clearly otherwise indicated.

[0024] In this article, "or a combination thereof" means "or any combination thereof", and "any one", "any kind", "any one" means "any one", "any kind", "any one".

[0025] It should be understood that the features disclosed in the various embodiments herein can be arbitrarily combined to form the technical solution of this application, as long as there is no contradiction in the combination of these features.

[0026] The present application will be described below with reference to specific embodiments and examples. It should be understood that these specific embodiments and examples are merely illustrative and are not intended to limit the scope or use of the present application.

[0027] Example 1

[0028] like Figures 2 to 6 As shown, an exhaust push rod structure includes a rod body 1. One end of the rod body 1 is integrally provided with a top head 3, and the other end is provided with a push head 2. The top end face of the top head 3 is provided with a top overflow groove 4 that is recessed inward and extends horizontally. The side surface of the top head 3 is provided with a side exhaust groove 5 that is recessed inward and extends axially. A degassing ring groove 6, communicating with the side exhaust groove 5, is provided on the rod body 1 near the rear end of the top head 3. An internal exhaust channel 7, extending from the top end of the top head 3 towards the rear end, is provided in the axial middle of the top head 3. The side edge of the internal exhaust channel 7 extends radially and penetrates the rod body 1. A sealing guide ring 8 is provided on the rod body 1 at the rear end of the degassing ring groove 6. The internal exhaust channel 7 extends rearward and beyond the sealing guide ring 8. The diameter of the degassing ring groove 6 is 0.2-0.5 mm smaller than that of the rod body 1. The depth of the side exhaust groove 5 is 0.2-0.5 mm.

[0029] The working principle of this utility model is as follows:

[0030] The top part head 3 is pushed into the casting mold, and the sealing guide ring 8 seals the middle side wall of the casting mold. A part of the gas inside the casting mold is discharged into the exhaust channel inside the mold through the top overflow vent groove 4, the side exhaust groove 5 and the degassing ring groove 6; a small part of the gas is discharged outward through the internal exhaust channel 7. This multi-way exhaust has a good exhaust effect. At the same time, since multiple top overflow vent grooves 4 and side exhaust grooves 5 are respectively provided with multiple interconnected grooves, the contact area with the product is increased due to the multiple top overflow vent grooves 4 and side exhaust grooves 5, thereby further enhancing the heat transfer effect.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A venting push rod structure, comprising a rod body (1), wherein one end of the rod body (1) is integrally provided with a pusher head (3), and the other end is provided with a pusher head (2), characterized in that: The top end face of the top part (3) is provided with a top overflow vent groove (4) that is recessed inward and extends horizontally, and the side of the top part is provided with a side vent groove (5) that is recessed inward and extends axially. The rod body (1) is provided with a degassing ring groove (6) that communicates with the side vent groove (5) near the rear end of the top part (3). The top part (3) is provided with an internal venting channel (7) that extends from the top end of the top part (3) to the rear end. The side of the internal venting channel (7) extends radially and penetrates the rod body (1).

2. The exhaust push rod structure according to claim 1, characterized in that: A sealing guide ring (8) is provided on the rod body (1) at the rear end of the degassing ring groove (6).

3. The exhaust push rod structure according to claim 2, characterized in that: The internal exhaust passage (7) extends rearward and beyond the sealing guide ring (8).

4. The exhaust push rod structure according to claim 1, characterized in that: The degassing ring groove (6) is 0.2-0.5 mm smaller in diameter than the rod body (1).

5. The exhaust push rod structure according to claim 1, characterized in that: The depth of the side exhaust groove (5) is 0.2-0.5mm.

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