Injection mold with lubricating function

Abstract

The utility model discloses an injection mold with lubrication function, including the bottom plate, the upper surface fixed connection of bottom plate has the base, the upper surface fixed connection of base has the lower mould, the upper portion of lower mould is provided with the upper mould, the four corners of lower mould upper surface all are fixedly connected with the locating column, the four corners of upper mould all are equipped with the locating mouth of adaptation with locating column, the inner wall surface of locating mouth is equipped with a plurality of accommodating grooves, the utility model relates to injection mold technical field. This injection mold with lubrication function, through the inside injection lubricating oil fluid of shunt cavity, can be through a plurality of shunt mouth diversion, makes lubricating oil fluid enter the inside of accommodating groove, and then can lubricate the ball, improves the friction coefficient in the surface pull -out movement process of upper mould in locating column, and then improves the smoothness of split -die.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold with lubrication function. Background Technology

[0002] Injection molds are molds used to manufacture plastic products. They consist of two parts: a moving mold and a fixed mold. The mold is formed into the desired shape by injection molding. Injection molds are widely used in the automotive industry because they offer advantages such as high efficiency, high quality, and cost savings in the production of automotive parts. Guide sleeves and guide rods are important components of injection molds, mainly to ensure that the moving mold and the fixed mold are accurately aligned when the mold is closed, so as to avoid damage to the mold and defects in the product.

[0003] In the existing technology, the guiding components of injection molds generally have insufficient self-lubricating performance. During the mold opening and closing process, the high coefficient of friction between the guide sleeve and the guide rod will aggravate the wear of the components. The wear will not only lead to a gradual decrease in the accuracy of the guiding structure and a deterioration in the stability of operation, but may also lead to frequent replacement needs due to excessive wear. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an injection mold with a lubrication function, which solves the problem that the guide components of injection molds generally lack self-lubricating performance, and that the high coefficient of friction between the guide sleeve and the guide rod during mold opening and closing exacerbates component wear.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an injection mold with lubrication function, including a base plate, a base fixedly connected to the upper surface of the base plate, a lower mold fixedly connected to the upper surface of the base, an upper mold provided above the lower mold, positioning pins fixedly connected to the four corners of the upper surface of the lower mold, and positioning openings adapted to the positioning pins provided at the four corners of the upper mold. The inner wall of the positioning port is provided with several receiving grooves. Inside the receiving grooves, there are rotatable balls that contact the surface of the positioning post. The four corners inside the upper mold are provided with flow-diverting cavities that surround the outside of the corresponding positioning port. The inner wall of the flow-diverting cavity is provided with several flow-diverting ports. The multiple flow-diverting ports correspond one-to-one with the multiple receiving grooves and are connected to each other.

[0006] Furthermore, each of the four corners inside the upper mold is provided with a flow channel communicating with the interior of the flow distribution cavity, and each of the four corners of the side wall of the upper mold is provided with an oil injection pipe communicating with the corresponding flow channel.

[0007] Furthermore, the top of the upper mold is provided with an injection port, and a positioning cylinder is fixedly connected to the top of the upper mold.

[0008] Furthermore, the upper mold has a cooling cavity inside, and the side wall of the lower mold is connected to several water injection pipes.

[0009] Furthermore, the plurality of receiving slots are evenly spaced and distributed along the inner wall surface of the positioning port.

[0010] Furthermore, the lower surface of the base plate is fixedly connected with several internal threaded holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: after injecting lubricating oil into the interior of the distribution cavity, the lubricating oil can be guided through several distribution ports to enter the interior of the receiving groove, thereby lubricating the balls, increasing the friction coefficient during the pulling and moving process of the upper mold on the surface of the positioning post, thus improving the smoothness of mold opening and closing. Moreover, when lubricating the balls, the lubricating oil can enter the interior of the positioning port through the gap between the receiving groove and the balls, and contact the surface of the positioning post, reducing the wear rate, improving the guiding accuracy, thereby improving the stability of mold closing and positioning, extending the service life of the mold, and reducing the maintenance cost of the mold. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the oil injection pipe and the flow guiding channel of this utility model; Figure 3 This is a schematic diagram of the cooling cavity and water injection pipe of this utility model; Figure 4 This utility model Figure 2 Enlarged view of a portion of point A in the middle.

[0013] In the diagram: 1. Base plate; 2. Base; 3. Lower mold; 4. Upper mold; 5. Positioning pin; 6. Positioning port; 7. Receiving groove; 8. Ball bearing; 9. Flow divider cavity; 10. Guide channel; 11. Oil injection pipe; 12. Cooling cavity; 13. Water injection pipe; 14. Positioning cylinder; 15. Injection port; 16. Flow divider port. Detailed Implementation

[0014] 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.

[0015] First Embodiment

[0016] Please see Figure 1 , Figure 2 and Figure 4 This utility model provides a technical solution: an injection mold with lubrication function, including a base plate 1, a base 2 fixedly connected to the upper surface of the base plate 1, a lower mold 3 fixedly connected to the upper surface of the base 2, an upper mold 4 provided above the lower mold 3, positioning pins 5 fixedly connected to the four corners of the upper surface of the lower mold 3, and positioning openings 6 adapted to the positioning pins 5 at the four corners of the upper mold 4. The inner wall of the positioning port 6 is provided with several receiving grooves 7. Inside the receiving grooves 7, there are rotatable balls 8 that contact the surface of the positioning post 5. The four corners inside the upper mold 4 are provided with flow diversion cavities 9 surrounding the outside of the corresponding positioning port 6. The inner wall of the flow diversion cavity 9 is provided with several flow diversion ports 16. The multiple flow diversion ports 16 correspond one-to-one with the multiple receiving grooves 7 and are connected.

[0017] In this embodiment, after injecting lubricating oil into the flow distribution cavity 9, the lubricating oil can be guided through several flow distribution ports 16 to enter the interior of the receiving groove 7, thereby lubricating the ball bearings 8, increasing the coefficient of friction during the pulling and moving process of the upper mold 4 on the surface of the positioning post 5, and thus improving the smoothness of mold opening and closing.

[0018] When lubricating the ball bearing 8, the lubricating oil can enter the interior of the positioning port 6 through the gap between the receiving groove 7 and the ball bearing 8, and contact the surface of the positioning post 5, thereby reducing the wear rate, improving the guiding accuracy, and thus improving the stability of mold closing positioning, extending the service life of the mold, and reducing the maintenance cost of the mold.

[0019] Furthermore, each of the four corners of the upper mold 4 is provided with a guide channel 10 that communicates with the interior of the flow distribution cavity 9. Each of the four corners of the side wall of the upper mold 4 is provided with an oil injection pipe 11 that communicates with the corresponding guide channel 10. The oil injection pipe 11 facilitates the injection of lubricating oil into the interior of the guide channel 10 by external injection equipment. Then, by utilizing the connection of the guide channel 10, the lubricating oil can be transported to the interior of the flow distribution cavity 9.

[0020] Furthermore, the top of the upper mold 4 is provided with an injection port 15, and a positioning cylinder 14 is fixedly connected to the top of the upper mold 4. The positioning cylinder 14 facilitates the injection of raw materials into the mold and facilitates the positioning of the injection nozzle, thereby improving the injection stability.

[0021] Second Embodiment

[0022] Please see Figure 3 Based on the same concept as the first embodiment described above, the upper mold 4 has a cooling cavity 12 inside, and the side wall of the lower mold 3 is connected to several water injection pipes 13.

[0023] In this embodiment, multiple water injection pipes 13 facilitate the injection of cooling medium into the interior of the cooling chamber 12 by external water injection equipment, which facilitates rapid cooling of the mold after injection molding, improves the molding rate of the workpiece, and thus improves the production efficiency of the workpiece.

[0024] Furthermore, multiple receiving slots 7 are evenly spaced and distributed along the inner wall of the positioning port 6.

[0025] Furthermore, the lower surface of the base plate 1 is fixedly connected with several internal threaded holes.

[0026] During operation, after lubricating oil is injected into the flow chamber 9, it can be guided through several flow ports 16 to enter the interior of the receiving groove 7, thereby lubricating the balls 8, increasing the friction coefficient during the pulling and moving process of the upper mold 4 and the positioning post 5, thus improving the smoothness of mold opening and closing. When lubricating the balls 8, the lubricating oil can enter the interior of the positioning port 6 through the gap between the receiving groove 7 and the balls 8, and contact the surface of the positioning post 5, reducing the wear rate and improving the guiding accuracy. Multiple water injection pipes 13 facilitate the external water injection equipment to circulate and inject cooling medium into the interior of the cooling chamber 12, which facilitates rapid cooling of the mold after injection molding and improves the molding rate of the workpiece.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0028] 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, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

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