Terminal die with delayed pin drawing structure

Abstract

The utility model relates to a terminal die with a delayed needle drawing structure, which is characterized by comprising a first die assembly, a second die assembly, a die core and an oil supply pipeline, wherein the first mold assembly is matched with the second mold assembly, oil cylinders are arranged on the two opposite sides of the second mold assembly respectively, and a plurality of movable ejector pins capable of being driven by the oil cylinders are arranged on the inner side of the second mold assembly; an oil cylinder and a movable ejector pin are arranged in the second mold assembly, after an oil way system connected to the oil cylinder is used for being in butt joint with an oil way on a forming machine, oil in the oil way can control stretching and retracting of the movable ejector pin by debugging parameters of the forming machine, end face wrapping edge in a plastic blank of a finished product can be prevented, and product quality is improved. And the holes of the finished product can be prevented from being filled with glue, so that the high-standard and diversified requirements of the product can be met.

Description

Technical Field

[0001] This utility model relates to a mold production equipment, and more particularly to a terminal mold with a delayed pin extraction structure. Background Technology

[0002] In electronic components, terminals are an important part connecting wires and connectors. Their fit and connection strength are very important. In order to match different products with similarities, sizes and appearances, each terminal has its own unique design.

[0003] Terminals are typically formed using molds. However, in current vertically molded terminal molds, the following dilemma often arises during the forming process:

[0004] The first point is: to ensure that the end face and inner hole of the terminal will not be punched with glue after the terminal is formed, ejector pins must be added to the mold to press the terminal and make the terminal flat against the mold cavity. However, this will result in pinholes on the surface of the formed terminal product and the back of the terminal will be exposed, making the product less aesthetically pleasing.

[0005] The second point is: to ensure the product has a beautiful appearance and no pinholes, the terminals cannot be pressed down with ejector pins during molding. On the contrary, there is a great risk that the molding pressure will be insufficient and the terminals will not be able to be flat against the mold cavity, resulting in glue splattering on the terminal end face and inside the hole after molding.

[0006] Therefore, in order to address the aforementioned molding problems and to simultaneously resolve the dilemma of choosing between product appearance and molding quality, the inventor proposed the concept of this invention. Utility Model Content

[0007] To address the aforementioned problems and overcome the dilemma of choosing between product appearance and molding quality depending on the use of ejector pins in existing vertical terminal molds, this invention proposes a terminal mold with a delayed ejector pin structure, comprising a first mold assembly, a second mold assembly, a mold core, and an oil supply pipeline. The first and second mold assemblies are matched, with hydraulic cylinders respectively located on opposite sides of the second mold assembly, and multiple movable ejector pins, driven by the hydraulic cylinders, located inside the second mold assembly. The mold core is detachably disposed between the first and second mold assemblies, forming a cavity within it, and the movable ejector pins can extend into the mold core and contact the cavity. One end of the oil supply pipeline is connected to the hydraulic cylinder of the second mold assembly, allowing oil to be supplied from the molding machine into the hydraulic cylinder and controlling the movement of the movable ejector pins.

[0008] Preferably, in the terminal mold with the delayed pin extraction structure, the first mold assembly is further provided with a side mold platform and a limiting component disposed on the side mold platform, the limiting component being used to fix the mold core.

[0009] Preferably, in the terminal mold with the delayed pin extraction structure, the side mold stage is provided with a track, and the limiting component includes a push block and a positioning rod connected to the push block. The push block can move on the track and the positioning rod fixes the mold core.

[0010] Preferably, in the terminal mold with the delayed pin extraction structure, the limiting component further includes a limiting block and a guide rod, the push block can move along the guide rod and the track, and the limiting block can prevent the push block from sliding out of the track.

[0011] Preferably, in the terminal mold with the delayed pin extraction structure, the second mold assembly is further provided with a limiting buckle, which can be fixed to the limiting component of the first mold assembly.

[0012] Preferably, in the terminal mold with the delayed pin extraction structure, the first mold assembly is further provided with an ejection system, so that the finished product can be ejected by the ejector pin after stamping.

[0013] Preferably, in the terminal mold with the delayed pin extraction structure, the mold core is provided with two injection channels arranged opposite to each other.

[0014] Preferably, in the terminal mold with the delayed pin extraction structure, the first mold assembly and the second mold assembly are connected by a locating pin.

[0015] Preferably, in the terminal mold with the delayed pin extraction structure, the first mold assembly and the second mold assembly are each provided with a mold core groove, and the mold core is detachably disposed in the corresponding mold core groove.

[0016] Preferably, in the terminal mold with the delayed pin extraction structure, the mold core can be divided into a first mold core and a second mold core, and the cavity is formed by the first mold core and the second mold core.

[0017] The advantages of this utility model are:

[0018] 1. The advantages of the terminal mold with delayed pin extraction structure of this utility model are that its second mold assembly is equipped with an oil cylinder and a movable ejector pin. After the oil circuit system connected to the oil cylinder is connected to the oil circuit on the molding machine, the oil in the oil circuit can control the extension and retraction of the movable ejector pin by adjusting the molding machine parameters. At the appropriate time, the movable ejector pin can make the finished plastic blank tightly fit the cavity without producing pinholes on the surface of the finished product. This results in good molding quality, standard appearance and no pinholes in the finished product. It can prevent edge burrs inside the finished plastic blank and prevent glue from being punched into the holes of the finished product, thereby meeting the high standards and diversified needs of the product. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the present invention.

[0020] Figure 2 This is an exploded perspective view of the present invention.

[0021] Figure 3 This is an exploded perspective view of the present invention.

[0022] Figure 4 This is an exploded perspective view of the first mold assembly and the first mold core of this utility model.

[0023] Figure 5 This is an exploded perspective view of the second mold assembly and the second mold core of this utility model.

[0024] Figure 6 This is a three-dimensional cross-sectional view of the present invention.

[0025] Figure 7 This is a side sectional view of the present invention. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "one side," "one end," and "one side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element 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 the invention. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0031] The accompanying drawings illustrate various mechanisms according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0032] like Figure 1 and Figure 2 As shown, the terminal mold with a delayed pin extraction structure of this utility model includes a first mold assembly 10, a second mold assembly 20, a mold core 30, and an oil supply pipeline 40.

[0033] Please match Figure 2 , Figure 3 and Figure 4 The first mold assembly 10 and the second mold assembly 20 are matched and can move relative to each other and can be sealed and locked together. The mold core 30 is disposed between the first mold assembly 10 and the second mold assembly 20, and the oil supply pipeline 40 is disposed in the second mold assembly 20.

[0034] like Figure 4As shown, the first mold assembly 10 includes a fixing plate 11, a mold base 12 disposed on the fixing plate 11, a side mold platform 13 disposed adjacent to the mold base 12, and a limiting component 14 disposed on the side mold platform 13. The mold base 12 has a mold core groove 121 in the center and injection grooves 122 are provided on both sides of the mold core groove 121. Preferably, the mold base 12 is rectangular and has positioning holes 123 at the four corners that correspond to the positions and match the shapes of the second mold assembly 20.

[0035] like Figure 4 and Figure 7 As shown, the side mold platform 13 is adjacent to the mold base 12 and is provided with a track 131 for the limiting component 14 to slide. The limiting component 14 is movably mounted on the side mold platform 13 and can move along the track 131. The limiting component 14 includes a push block 141 that can move along the track 131. The push block 141 is connected to a pair of positioning rods 142. The positioning rods 142 can penetrate into the mold base 12 and fix the mold core 30 from the side. When disassembling the mold core 30, the push block 141 can be withdrawn along the track 131 and the positioning rods 142 can be disengaged from the mold core groove 121, so that the mold core 30 can be taken out from the mold core groove 121.

[0036] Preferably, the limiting component 14 is further provided with a limiting block 143 and a guide rod 144. The guide rod 144 is connected to the push block 141. The limiting block 143 is fixed to the side mold table 13 and located at the end of the guide rod 144. The push block 141 can move along the guide rod 144 and the track 131. The limiting block 143 can prevent the push block 141 from sliding out of the track 131.

[0037] The first mold assembly 10 is further provided with an ejection system 15, which enables the finished product to be ejected by ejection pins after stamping.

[0038] Please match Figure 3 and Figure 5 The second mold assembly 20 also includes a fixing plate 21 and a mold base 22 disposed on the fixing plate. Preferably, the shape and position of the mold base 22 of the second mold assembly 20 match the mold base 11 of the first mold assembly 10, both being rectangular. Positioning pins 23 corresponding to the positions of the positioning holes 123 are respectively provided at the four corners. A mold core groove 221 is provided in the center of the mold base 22 for installing the mold core 30. Multiple ejector pin grooves 222 are provided inside the mold base 22, and each ejector pin groove 222 is connected to the mold core groove 221.

[0039] Please see Figure 5 , Figure 6Oil cylinders 24 are respectively provided on two opposite sides of the mold base 22. Multiple movable ejector pins 25 are provided inside the mold base 22. Each movable ejector pin 25 is movably and is respectively located in an ejector pin groove 222. One end of each movable ejector pin 25 is connected to the oil cylinder 24, and the other end can movably pass through the ejector pin groove 222 into the mold core groove 221.

[0040] The hydraulic cylinder 24 can drive each movable ejector pin 25 hydraulically, and through the hydraulic control connected to the molding machine, it can precisely drive the movement distance and movement time of each movable ejector pin 25.

[0041] like Figure 5 , Figure 7 As shown, preferably, a limit buckle 26 is further provided in the second mold assembly 20. The limit buckle 26 can be correspondingly fastened to the push block 141 of the limit assembly 14 of the first mold assembly 10 to ensure that the push block 141 can avoid disengaging and retracting when subjected to injection pressure, which would result in insufficient injection pressure of the product.

[0042] like Figures 3 to 6 As shown, the mold core 30 is detachably disposed between the first mold assembly 10 and the second mold assembly 20. The mold core 30 can be divided into a first mold core 31 and a second mold core 32. The first mold core 31 is disposed in the mold core groove 121 of the first mold assembly 10, and the second mold core 32 is disposed in the mold core groove 221 of the second mold assembly 20. The first mold core 31 and the second mold core 32 can be connected to form a cavity that matches the shape of the final product.

[0043] Two injection runners 33 are provided on the mold core 30, which are positioned opposite each other. The two injection runners 33 are positioned at the injection groove 122. The molding machine connects these two locations and injects plastic into the cavity of the mold core 30 by injection molding to form the final product.

[0044] Preferably, a through hole 321 is provided at the position of the second mold core 32, corresponding to the position of each ejector pin groove 222, so that the movable ejector pin 25 can move.

[0045] like Figure 2 , 3 As shown in Figure 4, one end of the oil supply pipeline 40 is connected to the oil cylinder 24 of the second mold assembly 20, and the other end is connected to the molding machine. The oil output can be controlled by setting the parameters of the molding machine, thereby driving the movement of each movable ejector pin 24.

[0046] like Figure 5 , 6As shown, the specific implementation of this utility model is as follows: by adjusting the molding machine parameters, the oil transmission can be controlled, so that the oil enters the oil cylinder 24 through the oil passage 40, and then flows into each ejector pin groove 222; at the beginning of molding, the movable ejector pin 24 will extend into the cavity 33 through each ejector pin groove 222, and provide sufficient pressure during the filling of the cavity 33 with plastic to prevent the end face and holes of the finished plastic from being punched with glue. When the finished plastic is 90% molded, each movable ejector pin 24 retracts due to the decrease in oil pressure. Finally, the remaining pressure during molding fills the pin holes of the movable ejector pins left on the surface of the finished product with glue, so that no pin holes are generated on the surface of the finished plastic. After the product is completed, the finished product is ejected by the ejector pin to complete the stamping process.

[0047] The advantages of this terminal mold with a delayed pin-pulling structure are that its second mold assembly is equipped with an oil cylinder and a movable ejector pin. By connecting the oil circuit system to the oil circuit on the molding machine, the oil in the oil circuit can control the extension and retraction of the movable ejector pin by adjusting the molding machine parameters. At the appropriate time, the movable ejector pin can ensure that the finished plastic preform fits tightly against the cavity without creating pinholes on the surface of the finished product. This results in good molding quality, a standard appearance, and no pinholes. It also prevents edge burrs inside the finished plastic preform and prevents glue from seeping into the holes of the finished product, thus meeting high-standard and diverse product requirements.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A terminal mold having a delayed pin extraction structure, characterized by, include: First mold assembly; The second mold assembly is matched with the first mold assembly. Hydraulic cylinders are respectively provided on two opposite sides of the second mold assembly, and multiple movable ejector pins that can be driven by the hydraulic cylinders are provided on the inner side of the second mold assembly. A mold core is detachably disposed between a first mold assembly and a second mold assembly, the mold core having a cavity inside, and the movable ejector pin being able to extend into the mold core and contact the cavity; The oil supply line is connected at one end to the oil cylinder of the second mold assembly. The oil supply line can transmit oil from the molding machine into the oil cylinder and control the movement of the movable ejector pin.

2. The terminal mold having a delayed pin extraction structure according to claim 1, wherein, The first mold assembly is further provided with a side mold platform and a limiting component disposed on the side mold platform. The limiting component can be used to fix the mold core.

3. The terminal mold having a delayed pin extraction structure according to claim 2, wherein The side mold platform is equipped with a track, and the limiting component includes a push block and a positioning rod connected to the push block. The push block can move on the track and the positioning rod fixes the mold core.

4. The terminal mold having a delayed pin extraction structure according to claim 3, wherein The limiting component further includes a limiting block and a guide rod. The push block can move along the guide rod and the track, and the limiting block can prevent the push block from sliding off the track.

5. The terminal mold having a delayed pin extraction structure according to claim 2, wherein The second mold assembly is further provided with a limiting buckle, which can be fixed to the limiting component of the first mold assembly.

6. The terminal mold having a delayed pin extraction structure according to any one of claims 1 to 5, wherein The first mold assembly is further equipped with an ejection system, which allows the finished product to be ejected through ejection pins after stamping.

7. The terminal mold having a delayed pin extraction structure according to any one of claims 1 to 5, wherein The mold core is provided with two injection runners positioned opposite each other.

8. The terminal mold having a delayed pin extraction structure according to any one of claims 1 to 5, wherein The first mold assembly and the second mold assembly are connected by locating pins.

9. The terminal mold having a delay pin drawing structure according to any one of claims 1 to 5, wherein The first mold assembly and the second mold assembly are each provided with a mold core groove, and the mold core is detachably disposed in the corresponding mold core groove.

10. The terminal mold having a delay pin drawing structure according to any one of claims 1 to 5, wherein The mold core can be divided into a first mold core and a second mold core, and the cavity is formed by the first mold core and the second mold core.

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