Liquid silicone mold

Abstract

This utility model discloses a liquid silicone mold, including a front mold, a rear mold, and a pressure plate mechanism. The front mold contains a front mold core, and the rear mold contains a rear mold core. A middle plate is provided between the front and rear mold cores, and placement grooves are provided on both sides of the rear mold core. The pressure plate mechanism includes a cylinder and a pressure block. The cylinder is fixedly connected to both sides of the rear mold, and the end of the piston rod of the cylinder passes through the rear mold and is placed in the placement groove. The pressure block is fixedly connected to the end of the cylinder, and a limiting plate matching the middle plate is provided on the pressure block. This utility model provides a pressure plate mechanism on both sides of the rear mold to ensure that the middle plate can remain stably on the rear mold when the mold is opened, and it occupies less mold space and does not affect the standardized design of the mold.

Description

Technical Field

[0001] This utility model relates to the field of mold equipment technology, and in particular to a liquid silicone mold. Background Technology

[0002] Waterproof plugs are rubber or plastic fittings used to seal and protect electrical connection components. Their main function is to prevent the intrusion of moisture, dust, and other external environmental factors, ensuring the reliability and safety of electrical connections. They are commonly used in wiring harness connectors in the automotive and electronic equipment industries. Because waterproof plugs are irregularly shaped and small in size, they are mass-produced, meaning multiple cavities are set within the same mold. Considering factors such as mold automation, mold lifespan, mold maintenance frequency, and ease of operation for workers, a middle plate is typically designed in addition to the upper and lower mold cores. This allows the product to remain on the middle plate, facilitating subsequent demolding.

[0003] To facilitate the removal of the middle plate, it is essential to ensure that the middle plate remains in the rear mold after mold opening. Traditionally, this is achieved by using a front mold ejector mechanism, where the ejector exerts a downward force on the middle plate during mold opening to keep it in the rear mold. However, the ejector stroke takes up mold space, and the ejector's lifespan is relatively short, failing to meet the standardized mold design requirements and mold lifespan requirements. Utility Model Content

[0004] The purpose of this invention is to provide a liquid silicone mold with pressure plate mechanisms on both sides of the rear mold to ensure that the middle plate can remain stably on the rear mold when the mold is opened, and it occupies less mold space and does not affect the standardized design of the mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a liquid silicone mold, comprising a front mold, a rear mold, and a pressure plate mechanism, wherein a front mold core is provided in the front mold, a rear mold core is provided in the rear mold, a middle plate is provided between the front mold core and the rear mold core, and placement grooves are provided on both sides of the rear mold core; the pressure plate mechanism comprises a cylinder and a pressure block, the cylinder is fixedly connected to both sides of the rear mold, the end of the piston rod of the cylinder passes through the rear mold and is placed in the placement groove, the pressure block is fixedly connected to the end of the cylinder, and a limiting plate matching the middle plate is provided on the pressure block.

[0006] Optionally, a heat insulation plate is provided between the cylinder and the rear mold.

[0007] Optionally, the piston rod has an external thread at its end, and the pressure block has an internal thread hole on its side wall that matches the external thread. The pressure block is threadedly connected to the piston rod.

[0008] Optionally, the pressure plate mechanisms on both sides are staggered.

[0009] Optionally, a limiting groove matching the limiting plate is provided on the middle plate.

[0010] The liquid silicone mold of this invention has the following advantages: (1) Before the mold is opened, the piston rod of the cylinder is pushed forward so that the limiting plate of the pressure block is pressed on the middle plate to limit the middle plate. Then the mold is opened and the front mold is opened. The middle plate will remain stably on the rear mold. Finally, the piston rod of the cylinder is retracted to release the restriction on the middle plate. The workers take out the middle plate and demold it by removing the waterproof plug on it. Then the new middle plate is placed on the rear mold for the next injection molding operation.

[0011] (2) The heat insulation plate can isolate the heat during mold forming, avoid high temperature damage to the cylinder, and protect the cylinder.

[0012] (3) The threaded connection between the pressure block and the piston rod facilitates the installation and disassembly of the cylinder and the pressure block and the rear mold, and facilitates maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a structural schematic diagram of the rear mold.

[0015] Figure 3 This is a top view of the rear mold.

[0016] Figure 4 This is a schematic diagram of the pressure plate mechanism. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figures 1-4As shown, a liquid silicone mold includes a front mold 1, a rear mold 2 and a pressure plate mechanism 3. A front mold core is provided in the front mold 1, and a rear mold core 13 is provided in the rear mold 2. A middle plate 4 is provided between the front mold core and the rear mold core 13, and placement grooves 5 are provided on both sides of the rear mold core 13. The pressure plate mechanism 3 includes a cylinder 6 and a pressure block 7. The cylinder 6 includes a cylinder body 8, which has an air chamber 9 and a sliding hole. An end cap 11 is provided at the end of the air chamber 9. A piston rod 12 is slidably connected in the sliding hole. A piston 10 is provided at the proximal end of the piston rod 12. The piston 10 divides the air chamber 9 into two sealed chambers. The distal end of the piston rod 12 passes through the rear mold 2 and is placed in the placement groove 5. The distal end of the piston rod 12 is provided with an external thread. The side wall of the pressure block 7 is provided with an internal thread hole that matches the external thread. The pressure block 7 is threadedly connected to the piston rod 12. The threaded connection between the pressure block 7 and the piston rod 12 facilitates the installation and disassembly of the cylinder 6 and the pressure block 7 with the rear mold 2, and facilitates the daily maintenance of the mold. The cylinder body 8 is bolted to both sides of the rear mold 2. The pressure plate mechanisms 3 on both sides are staggered to improve the stability of the center plate 4. A heat insulation plate 14 is provided between the cylinder body 8 and the rear mold 2. The heat insulation plate 14 can isolate the heat during mold forming and prevent high temperature from damaging the cylinder 6, thus protecting the cylinder 6. The pressure block 7 is located in the placement groove 5. The depth of the placement groove 5 is greater than the width of the pressure block 7. The pressure block 7 has a certain amount of movement space in the placement groove 5. The pressure block 7 is provided with a limiting plate 15 that matches the center plate 4. The center plate 4 is provided with a limiting groove 16 that matches the limiting plate 15. When the limiting plate 15 and the limiting groove 16 are engaged, the pressure plate mechanism 3 can accurately limit the center plate 4.

[0019] When the product is formed in the mold and the mold needs to be opened, the piston rod 12 of the cylinder 6 pushes inward, causing the limiting plate 15 of the pressure block 7 to press into the limiting groove 16 of the middle plate 4, thus limiting the movement of the middle plate 4. Then the mold is opened, the front mold 1 is removed, and the middle plate 4, due to the limitation of the pressure block 7, will remain stably on the rear mold 2 with the formed product. Then the piston rod 12 of the cylinder 6 retracts outward, releasing the limitation on the middle plate 4. The operator removes the middle plate 4, removes the waterproof plug on the middle plate 4 for demolding, and places a new middle plate 4 on the rear mold 2 for the next injection molding operation. The pressure plate mechanism 3 can stably limit the middle plate 4, improve demolding efficiency, and only requires space to be reserved in the placement groove 5 on the rear mold 2, occupying little space in the mold and meeting the standardized design requirements of the mold.

[0020] The embodiments described above are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

Claims

1. A liquid silicone mold, characterized in that: It includes a front mold, a rear mold, and a pressure plate mechanism. The front mold contains a front mold core, and the rear mold contains a rear mold core. A middle plate is provided between the front mold core and the rear mold core. Placement slots are provided on both sides of the rear mold core. The pressure plate mechanism includes a cylinder and a pressure block. The cylinder is fixedly connected to both sides of the rear mold. The end of the piston rod of the cylinder passes through the rear mold and is placed in the placement slot. The pressure block is fixedly connected to the end of the cylinder. A limiting plate matching the middle plate is provided on the pressure block.

2. The liquid silicone mold as described in claim 1, characterized in that: A heat insulation plate is installed between the cylinder and the rear mold.

3. The liquid silicone mold as described in claim 1, characterized in that: The piston rod has an external thread at its end, and the pressure block has an internal thread hole on its side wall that matches the external thread. The pressure block is threadedly connected to the piston rod.

4. The liquid silicone mold as described in claim 1, characterized in that: The pressure plate mechanisms on both sides are staggered.

5. The liquid silicone mold as described in claim 1, characterized in that: The middle plate has a limiting groove that matches the limiting plate.

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