Extrusion pin structure for die casting mold

Abstract

The utility model discloses an extrusion pin structure for die-casting die, including the oil cylinder fixed plate, the oil cylinder fixed plate is fixedly arranged with the oil cylinder, the output of oil cylinder penetrates the oil cylinder fixed plate and is sequentially provided with first extrusion pin fixed plate and second extrusion pin fixed plate, a plurality of mounting holes are seted up on the second extrusion pin fixed plate, and at least a part mounting hole is provided with extrusion pin, the first extrusion pin fixed plate is provided with at least one movable slot inwards along its contact end surface with the second extrusion pin fixed plate according to prearranged distance, and the end of one or more extrusion pin can extend to the movable slot, the oil cylinder fixed plate is fixedly arranged with the support column, and the other end of support column penetrates first extrusion pin fixed plate and extends to movable slot and can abut with the end of extrusion pin. According to product demand, this application can drive multiple extrusion pins to extrude through an oil cylinder, and realizes the purpose of different extrusion depth.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, specifically to an extrusion pin structure for die casting molds. Background Technology

[0002] In the die casting process, due to the presence of shrinkage cavities, extrusion pins are needed to compress the thicker areas at the shrinkage cavity locations, making them denser and eliminating shrinkage defects. Since there are multiple extrusion locations on the product, multiple extrusion pins are required. Due to space limitations in the mold, a single hydraulic cylinder is typically used to move multiple extrusion pins simultaneously. However, the size of the shrinkage cavities varies at different locations on the product, resulting in inconsistent extrusion depths. Existing extrusion pins, which move multiple extrusion pins a fixed distance simultaneously using a single hydraulic cylinder, cannot achieve the desired extrusion depth. Utility Model Content

[0003] To address the shortcomings of existing technologies, this application provides an extrusion pin structure for die-casting molds, including a hydraulic cylinder fixing plate. A hydraulic cylinder is fixedly mounted on the hydraulic cylinder fixing plate. The output end of the hydraulic cylinder passes through the hydraulic cylinder fixing plate, and a first extrusion pin fixing plate and a second extrusion pin fixing plate are sequentially arranged thereon. The second extrusion pin fixing plate has multiple mounting holes, and at least a portion of the mounting holes are fitted with extrusion pins. The first extrusion pin fixing plate has at least one movable groove formed at a preset distance along its contact end with the second extrusion pin fixing plate, wherein the ends of one or more extrusion pins can extend into the movable groove. A support column is fixedly mounted on the hydraulic cylinder fixing plate, and the other end of the support column passes through the first extrusion pin fixing plate, extends into the movable groove, and can abut against the ends of the extrusion pins.

[0004] Furthermore, the extrusion pin structure for the die-casting mold also includes a guide block, on which a through guide hole is formed, and the extrusion pin is disposed through the guide hole.

[0005] Furthermore, the extrusion pin includes a plurality of first extrusion pins and a second extrusion pin, the first extrusion pins being fixedly connected to the second extrusion pin fixing plate, and the second extrusion pin being movably inserted through the second extrusion pin fixing plate and extending into the movable groove.

[0006] Furthermore, the travel distance of the first extrusion pin is 15 mm.

[0007] Furthermore, the depth of the active groove is 5mm.

[0008] Furthermore, the diameter of the support column is smaller than the diameter of the end of the second extrusion pin, thereby ensuring that the first extrusion pin fixing plate and the second extrusion pin have sufficient contact area.

[0009] The advantage of this application is that the provided die-casting mold extrusion pin structure uses a hydraulic cylinder to drive multiple extrusion pins to extrude, thereby achieving different extrusion depths. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of one embodiment of the extrusion pin structure for die casting molds in this application; Figure 2 for Figure 1 Schematic diagram of the first extrusion pin fixing plate and support column structure.

[0011] The following are marked in the figure: 10, hydraulic cylinder; 11, hydraulic cylinder fixing plate; 12, first extrusion pin fixing plate; 121, movable groove; 13, second extrusion pin fixing plate; 131, mounting hole; 14, first extrusion pin; 15, second extrusion pin; 16, support column; 17, guide block. Detailed Implementation

[0012] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0013] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0014] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0015] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0016] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] See Figures 1-2 This embodiment provides an extrusion pin structure for a die-casting mold, including a hydraulic cylinder 10. The hydraulic cylinder 10 is fixed by a hydraulic cylinder fixing plate 11, which is connected to the body of the hydraulic cylinder 10. The output end of the hydraulic cylinder 10 passes through the hydraulic cylinder fixing plate 11 and is sequentially provided with a first extrusion pin fixing plate 12 and a second extrusion pin fixing plate 13. The first extrusion pin fixing plate 12 and the second extrusion pin fixing plate 13 are fixedly fitted together. Multiple mounting holes 131 are provided on the second extrusion pin fixing plate 13. In this embodiment, the product position to be extruded is determined according to actual needs. Three first pressing pins 14 are fixedly installed in one of the mounting holes 131, and one second pressing pin 15 is movably installed. The three first pressing pins 14 have the same travel. A movable groove 121 is opened inward along the contact end with the second pressing pin fixing plate 13 on the first pressing pin fixing plate 12. One end of the second pressing pin 15 can extend into the movable groove 121. A support column 16 is fixedly installed on the cylinder fixing plate 11. The other end of the support column 16 passes through the first pressing pin fixing plate 12 and can abut against the end of the second pressing pin 15.

[0019] To maintain the stability of the extrusion pins during movement, guide blocks 17 are provided on the three first extrusion pins 14 and one second extrusion pin 15. Four sets of guide holes are opened on the guide blocks 17, and the four extrusion pins are arranged through the guide holes. The guide blocks are fixedly connected to other structures on the mold.

[0020] In this embodiment, according to the actual extrusion requirements, the extrusion stroke of the three first extrusion pins 14 is 15mm, the depth of the movable groove 121 is 5mm, and the diameter of the support column 16 is smaller than the diameter of the end of the second extrusion pin, thereby ensuring that the first extrusion pin fixing plate and the second extrusion pin have sufficient contact area.

[0021] Working principle: When the product needs to be squeezed, the hydraulic cylinder 10 is started, and the first and second squeezing pins are moved through the first squeezing pin fixing plate 12 and the second squeezing pin fixing plate 13. The three first squeezing pins 14 move 15mm and stop. When squeezing the product, the other second squeezing pin first retracts 5mm into the movable groove 121, that is, the final movement stroke of the second squeezing pin is 10mm, thereby achieving different squeezing depths.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An extrusion pin structure for a die-casting mold, comprising a hydraulic cylinder fixing plate, wherein a hydraulic cylinder is fixedly mounted on the hydraulic cylinder fixing plate, characterized in that: The output end of the hydraulic cylinder passes through the hydraulic cylinder fixing plate and is sequentially provided with a first extrusion pin fixing plate and a second extrusion pin fixing plate. The second extrusion pin fixing plate has multiple mounting holes, and at least a portion of the mounting holes are provided with extrusion pins. The first extrusion pin fixing plate has at least one movable groove opened inward at a preset distance along its contact end with the second extrusion pin fixing plate, wherein the ends of one or more extrusion pins can extend into the movable groove. A support column is fixedly provided on the hydraulic cylinder fixing plate, and the other end of the support column passes through the first extrusion pin fixing plate, extends into the movable groove, and can abut against the end of the extrusion pin.

2. The extrusion pin structure for a die-casting mold according to claim 1, characterized in that: The extrusion pin structure for the die-casting mold also includes a guide block, on which a through guide hole is formed, and the extrusion pin is disposed through the guide hole.

3. The extrusion pin structure for a die-casting mold according to claim 1, characterized in that: The extrusion pin includes a plurality of first extrusion pins and a second extrusion pin. The first extrusion pins are fixedly connected to the second extrusion pin fixing plate, and the second extrusion pin is movable through the second extrusion pin fixing plate and extends into the movable groove.

4. The extrusion pin structure for a die-casting mold according to claim 3, characterized in that: The first extrusion pin has a travel distance of 15 mm.

5. The extrusion pin structure for a die-casting mold according to claim 3, characterized in that: The depth of the movable groove is 5mm.

6. The extrusion pin structure for a die-casting mold according to claim 3, characterized in that: The diameter of the support column is smaller than the diameter of the end of the second extrusion pin.

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