Terminal forming anti-exposure mechanism

Abstract

The utility model relates to an anti-exposure mechanism for terminal forming, which comprises a female die and a male die, the female die comprises a female die plate, a female die core, a female die ejector plate and a driving part, the female die core and the female die ejector plate are mounted on the female die plate, the driving part pushes the female die ejector plate to move, the female die core is provided with a female die forming cavity which is formed by sinking inwards from the surface, and the female die ejector plate is provided with a plurality of insert pins; the insert pin penetrates through the female die core and enters or exits from the female die forming cavity; and the male mold comprises a male mold plate and a male mold core installed on the male mold plate, the male mold core is provided with a male mold forming cavity formed by sinking inwards from the surface, and the male mold forming cavity and the female mold forming cavity are oppositely arranged. The terminal is supported by the driving part during injection molding, so that the terminal is fixed at a preset position, and after the terminal is completely wrapped by plastic, the insert pin is pushed by the driving part and is separated from the terminal, and then a hole when the insert pin is pulled out is filled and leveled up by injection molding pressure maintaining, so that the terminal is prevented from floating and leaking to cause a bad product.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and more particularly to a terminal forming anti-exposed mechanism. Background Technology

[0002] In the manufacturing process of modern electronic products, injection molding is widely used to integrate metal terminals with plastic housings to meet requirements such as electrical connection, mechanical fixation, and sealing protection. However, for applications with high sealing requirements (such as automotive electronics, medical devices, or outdoor waterproof products), the positioning stability of the terminals during the injection molding process is particularly critical.

[0003] According to Chinese patent CN210389932U, a terminal injection mold is disclosed. In this mold, a first pushing mechanism pushes a first slider, and a second pushing mechanism pushes a second slider, so that the first slider and the second slider move towards the rear mold core at the same time. Before the first slider and the second slider are closed together, the positioning pin provided in the first pushing mechanism begins to pass through the wiring hole of the terminal head. When the first slider and the second slider are fully closed and form a cavity with the rear mold core, the positioning pin completely passes through the wiring hole to position the terminal and fix the position of the terminal. However, when the terminal is mostly covered by plastic and there is no hole for positioning, this structure is difficult to effectively position the terminal, and the terminal is offset inside the plastic.

[0004] Therefore, it is necessary to develop a terminal forming anti-exposed mechanism to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a terminal forming anti-exposed mechanism to prevent terminal displacement.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a terminal forming anti-exposed mechanism, comprising:

[0007] The master mold includes a master mold template, a master mold core and a master mold ejector plate mounted on the master mold template, and a driving component that pushes the master mold ejector plate to move. The master mold core has a master mold forming cavity formed by recessing from the surface inward. The master mold ejector plate is equipped with a plurality of insert pins, which penetrate the master mold core and enter or exit the master mold forming cavity.

[0008] The male mold includes a male template and a male mold core mounted on the male template. The male mold core has a male mold forming cavity formed by recessing from the surface inward. The male mold forming cavity is disposed opposite to the female mold forming cavity.

[0009] Furthermore, the ejector plate of the master mold has a groove formed by recessing from the upper surface inward, and a pin is provided in the groove. The pin passes through the ejector plate of the master mold, the master mold template and the master mold core from the bottom surface of the groove, and the end extends into the molding cavity of the master mold.

[0010] Furthermore, a limiting component is installed in the groove, the limiting component covers the insert pin, and the limiting component is connected to the ejector plate of the master mold by bolts or screws.

[0011] Furthermore, the top of the insert protrudes outward to form a stop portion, and the diameter of the stop portion is larger than the diameter of the insert.

[0012] Furthermore, the mother mold has an inwardly recessed mounting groove formed from the upper surface, and a mother mold ejector plate is provided in the mounting groove. The depth of the mounting groove is greater than the height of the mother mold ejector plate.

[0013] Furthermore, the female mold ejector plate is recessed inward from the side to form an I-shaped groove, the driving component has a driving shaft, and a fixing ring is sleeved at the end of the driving shaft. The fixing ring extends from the side of the female mold ejector plate into the I-shaped groove.

[0014] Furthermore, the master mold includes a hot runner plate, which has a receiving groove formed by recessing from the side surface inward. A driving component is fixedly installed in the receiving groove, and the receiving groove is connected to the mounting groove.

[0015] Furthermore, the male mold also includes an ejector assembly, which includes an ejector pin and a fixing plate fixedly connected to the ejector pin. The bottom of the ejector pin is fixedly connected to the fixing plate, and its top extends through the male mold plate and the male mold core into the male mold forming cavity.

[0016] Furthermore, a side core-pulling part is installed on the outer side of the male mold. The side core-pulling part includes a slider and a mold core fixedly connected to the slider. By pushing the slider, the mold core is driven to extend into or retract into the molding cavity of the male mold.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model is a terminal forming anti-exposed mechanism, which has the feature of avoiding terminal displacement. The driving component holds the terminal in place during injection molding, so that the terminal is fixed in a predetermined position. After the terminal is completely wrapped in plastic, the insert pin is pushed by the driving component to disengage from the terminal. Then, the injection molding pressure fills the hole when the insert pin is pulled out, thus avoiding the terminal from floating and being exposed, which would cause product defects. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a three-dimensional structural diagram of a terminal forming anti-exposed mechanism according to the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the partially exploded structure of the mother mold of the terminal forming anti-exposed mechanism shown;

[0021] Figure 3 for Figure 1 A schematic diagram of another partially exploded structure of the female mold of the terminal forming anti-exposed mechanism shown;

[0022] Figure 4 for Figure 1 The diagram shows the structure of the ejector plate and drive component in the female mold of the terminal forming anti-exposed mechanism.

[0023] Figure 5 for Figure 1 A schematic diagram of the insert pin and limiting component structure in the female mold of the terminal forming anti-exposed mechanism shown;

[0024] Figure 6 for Figure 1 A schematic diagram of the female mold structure at another angle of the terminal forming anti-exposed mechanism shown;

[0025] Figure 7 for Figure 1 The diagram shows the mold structure of the terminal forming anti-exposed mechanism;

[0026] Figure 8 for Figure 7 The diagram shows a partial structural diagram of the male mold of the terminal forming anti-exposed mechanism.

[0027] In the diagram: 1. Female mold; 10. Injection pipe; 11. Upper fixing plate; 12. Hot runner plate; 13. Female mold plate; 14. Female mold core; 15. Injection port; 16. First connecting pillar; 17. Second connecting pillar; 18. Guide pillar; 19. Driving component; 191. Driving shaft; 192. Retaining ring; 110. Female mold ejector plate; 1101. I-beam groove; 1102. Groove; 1103. Limiting component; 111 1. Insert pin; 112. Stop part; 121. Storage groove; 131. Mounting groove; 132. Female mold cavity; 141. Female mold forming cavity; 2. Male mold; 21. Base plate; 22. Square iron; 23. Male mold plate; 24. Male mold core; 231. Male mold cavity; 241. Male mold forming cavity; 25. Ejector assembly; 251. Ejector pin; 252. Fixing plate; 3. Side core pulling part; 31. Slider; 32. Mold core. Detailed Implementation

[0028] 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.

[0029] Please refer to Figures 1 to 8 This utility model is a terminal forming anti-exposed mechanism, which includes a female mold 1 and a male mold 2.

[0030] Please refer to Figures 1 to 6 The female mold 1 includes an upper fixed plate 11, a heat flow plate 12 fixedly installed on the upper fixed plate 11, a female template 13 connected to the heat flow plate 12, and a female mold core 14 and a female mold ejector plate 110 installed in the female template 13.

[0031] Please refer to Figures 1 to 2 The upper fixed plate 11 is fixed to the injection molding machine template (not shown) to transmit the clamping force and ensure the overall stability of the female mold. The upper fixed plate 11 has an injection port 15, which is connected to an injection pipe 10. The injection pipe 10 passes through the upper fixed plate 11, the hot runner plate 12, and the female template 13 in sequence and enters the female mold core 14. The upper fixed plate 11 is equipped with a number of first connecting pillars 16, a number of second connecting pillars 17, and a number of guide pillars 18. The number of first connecting pillars 16, second connecting pillars 17, and guide pillars 18 can be changed according to requirements. The first connecting pillars 16 connect the upper fixed plate 11 and the hot runner plate 12 to fix the upper fixed plate 11 and the hot runner plate 12. One end of the second connecting pillars 17 is fixedly connected to the upper fixed plate 11, and the other end passes through the hot runner plate 12 and is fixedly connected to the female template 13. One end of the guide pillars 18 is fixedly connected to the female template 13, and the other end extends towards the male mold 2.

[0032] The heat flow plate 12 has a receiving groove 121 formed by recessing from the side surface inward, and the mother template 13 has an installation groove 131 formed by recessing from the top surface inward. The receiving groove 121 and the installation groove 131 are connected.

[0033] Please refer to Figures 3 to 5 A drive component 19 is fixedly installed in the receiving groove 121, and a female mold ejector plate 110 is provided in the mounting groove 131. The drive component 19 has a drive shaft 191, which extends into the mounting groove 131 and engages with the female mold ejector plate 110. Specifically, there is a pair of receiving grooves 121, each with a drive component 19 installed. A retaining ring 192 is sleeved at the end of the drive shaft 191. The female mold ejector plate 110 is recessed from the side to form an I-shaped groove 1101. The retaining ring 192 extends from the side of the female mold ejector plate 110 into the I-shaped groove 1101. Furthermore, the depth of the mounting groove 131 is greater than the height of the female mold ejector plate 110. The drive component 19 pushes the female mold ejector plate 110 to move within the mounting groove 131.

[0034] Please refer to Figure 6 The master mold 13 has a master mold cavity 132 formed by recessing from the lower surface. The master mold core 14 is located in the master mold cavity 132. The master mold core 14 has a master mold forming cavity 141 formed by recessing from the lower surface. The shape of the master mold forming cavity 141 matches part of the shape of the product. The injection pipe 10 is connected to the master mold forming cavity 141.

[0035] Please refer to Figures 4 to 5 The ejector plate 110 of the female mold has a groove 1102 formed by recessing inward from the upper surface. A pin 111 is provided within the groove 1102. The pin 111 penetrates the ejector plate 110, the female mold template 13, and the female mold core 14 from the bottom surface of the groove 1102 and extends into the molding cavity 141 of the female mold. A limiting member 1103 is installed within the groove 1102, covering the pin 111. The limiting member 1103 is fixedly connected to the ejector plate 110 by bolts or screws passing through the limiting member 1103. Specifically, the top of the pin 111 protrudes outward to form a stop portion 112. The diameter of the stop portion 112 is larger than the diameter of the pin 111, used to limit the pin 111 and fix the top of the pin 111 within the ejector plate 110 of the female mold.

[0036] Please refer to Figures 7 to 8The male mold 2 includes a base plate 21, a square iron 22 mounted on the base plate 21, a male template 23 located on the square iron 22, and a male mold core 24 installed within the male template 23. The base plate 21 is connected to the fixed template of the injection molding machine (not shown). The square iron 22 is fixed to the base plate 21 by bolts and supports the male template 23. The male template 23 has a male mold cavity 231 formed by recessing from the upper surface. The male mold core 24 is installed within the male mold cavity 231 and has a male mold forming cavity 241 formed by recessing from the upper surface. The shape of the male mold forming cavity 241 matches part of the shape of the product.

[0037] Please refer to Figure 8 The male mold 2 also includes an ejector assembly 25, which includes an ejector pin 251 and a fixing plate 252 fixedly connected to the ejector pin 251. The fixing plate 252 is installed on the base plate 21. The bottom of the ejector pin 251 is fixedly connected to the fixing plate 252, and its top extends through the male mold plate 23 and the male mold core 24 into the male mold forming cavity 241.

[0038] Please refer to Figure 8 In another embodiment, the outer side of the male mold 2 is mounted on the side core-pulling part 3. The side core-pulling part 3 includes a slider 31 and a mold core 32 fixedly connected to the slider 31. The mold core 32 extends into the male mold forming cavity 241 and together with the male mold forming cavity 241 forms the forming part. By pulling the slider 31 with external force, the mold core 32 enters or exits the male mold forming cavity 241.

[0039] When using the terminal forming anti-exposed mechanism of this utility model, the terminal is placed in the mold, the female mold 1 and the male mold 2 are closed, the insert pin 111 holds the terminal and keeps the terminal in place, the female mold forming cavity 141 of the female mold core 14 and the male mold forming cavity 241 of the male mold core 24 are closed to form a complete cavity, the injection molding machine injects molten plastic into the injection pipe 10 through the injection port 15, the plastic flows through the hot runner 12 to maintain the temperature, and finally enters the female mold forming cavity 141 and the male mold forming cavity 241. When the injection reaches 95% of the total capacity, the terminal is completely wrapped in plastic. At this time, the insert pin 111 is pushed by the drive component 19 to disengage from the terminal, and the injection pressure fills the hole when the insert pin 111 is withdrawn. After the product is formed, the female mold 1 and the male mold 2 are opened, and the ejector pin 251 pushes the product out of the male mold forming cavity 241.

[0040] This utility model is a terminal forming anti-exposed mechanism, which has the feature of preventing terminal displacement. The driving component holds the terminal in place during injection molding, so that the terminal is fixed in a predetermined position. After the terminal is completely wrapped in plastic, the insert pin is pushed by the driving component to disengage from the terminal. Then, the injection molding pressure fills the hole when the insert pin is pulled out, thus preventing the terminal from floating and being exposed, which would cause product defects.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A terminal forming anti-exposed mechanism, characterized in that, include: The master mold (1) includes a master template (13), a master mold core (14) mounted on the master template (13), a master mold ejector plate (110), and a drive component (19) for moving the master mold ejector plate (110). The master mold core (14) has a master mold forming cavity (141) formed by recessing from the surface inward. The master mold ejector plate (110) is equipped with a plurality of inserts (111). The inserts (111) penetrate the master mold core (14) and enter or exit the master mold forming cavity (141). The male mold (2) includes a male template (23) and a male mold core (24) mounted on the male template (23). The male mold core (24) has a male mold forming cavity (241) formed by recessing from the surface inward. The male mold forming cavity (241) is disposed opposite to the female mold forming cavity (141).

2. The terminal forming anti-exposed mechanism according to claim 1, characterized in that, The ejector plate (110) of the female mold has a groove (1102) formed by recessing from the upper surface inward. The groove (1102) is provided with a pin (111). The pin (111) passes through the ejector plate (110), the female mold template (13) and the female mold core (14) from the bottom surface of the groove (1102), and its end extends into the molding cavity (141) of the female mold.

3. The terminal forming anti-exposed mechanism according to claim 2, characterized in that, A limiting member (1103) is installed in the groove (1102), the limiting member (1103) covers the insert (111), and the limiting member (1103) is connected to the ejector plate (110) of the female mold by bolts or screws.

4. The terminal forming anti-exposed mechanism according to claim 1, characterized in that, The top of the insert (111) protrudes outward to form a stop portion (112), and the diameter of the stop portion (112) is larger than the diameter of the insert (111).

5. The terminal forming anti-exposed mechanism according to claim 1, characterized in that, The mother template (13) has an installation groove (131) formed by recessing from the upper surface inward. The installation groove (131) is provided with a mother mold ejector plate (110). The depth of the installation groove (131) is greater than the height of the mother mold ejector plate (110).

6. The terminal forming anti-exposed mechanism according to claim 1, characterized in that, The female mold ejector plate (110) is recessed inward from the side to form an I-shaped groove (1101). The driving member (19) has a driving shaft (191). A fixing ring (192) is sleeved at the end of the driving shaft (191). The fixing ring (192) extends from the side of the female mold ejector plate (110) into the I-shaped groove (1101).

7. The terminal forming anti-exposed mechanism according to claim 5, characterized in that, The master mold (1) includes a heat flow plate (12), which has a receiving groove (121) formed by recessing from the side surface inward. A driving component (19) is fixedly installed in the receiving groove (121), and the receiving groove (121) is connected to the mounting groove (131).

8. The terminal forming anti-exposed mechanism according to claim 1, characterized in that, The male mold (2) further includes an ejector assembly (25), which includes an ejector pin (251) and a fixing plate (252) fixedly connected to the ejector pin (251). The bottom of the ejector pin (251) is fixedly connected to the fixing plate (252), and its top extends through the male mold template (23) and the male mold core (24) into the male mold forming cavity (241).

9. The terminal forming anti-exposed mechanism according to claim 1, characterized in that, The male mold (2) is equipped with a side core pulling part (3) on its outer side. The side core pulling part (3) includes a slider (31) and a mold core (32) fixedly connected to the slider (31). By pushing the slider (31), the mold core (32) is driven to extend into or exit the male mold forming cavity (241).

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