Secondary ejection mechanism of keyboard key injection mold

Abstract

The utility model relates to the technical field of keyboard key production, in particular to a secondary ejection mechanism of a keyboard key injection mold, which comprises a bottom mold, positioning rods are fixed at four corners of the top end of the outer wall of the bottom mold, an ejection mold is mounted above the top end of the outer wall of the bottom mold, a bottom forming mold is mounted above the top end of the outer wall of the ejection mold, and the bottom forming mold is connected with the bottom mold. An embedded sliding block is arranged in the bottom mold, an upper forming mold is arranged at the top end of the outer wall of the bottom forming mold, a forming groove is formed in the top end of the inner wall of the bottom forming mold, and a material ejecting component for ejecting an injection molding part is arranged in the bottom mold and the material ejecting mold. By means of the technical scheme, the ejector pin can push the ejector rod to eject the keycaps, then when the keycaps are blocked, hydraulic oil can be conveyed into the hydraulic oil groove through the hydraulic oil conveying pipe so that the sliding rod can eject the ejector die upwards to conduct secondary ejection, and the step that workers take the keycaps manually can be omitted in the mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to keyboard key production technical field, concretely relates to a keyboard key injection mold secondary ejection mechanism. BACKGROUND

[0002] Keyboard cap refers to the visible part on the top of each key of the keyboard, which is usually the plastic cover layer of the key and is marked with letters, numbers or symbols. They not only bear the characters required by the user to input information, but also directly affect the use experience, appearance and personalization of the keyboard.

[0003] However, the existing keyboard key cap is mostly produced and prepared by using the injection molding process, so after the injection molding is completed, the personnel need to take out the key cap from the forming groove in the injection mold, and the existing mold mostly sets a ejector pin to eject the key cap, but because of the structure design of the forming groove, the displacement length of the ejector pin is often not enough to completely eject the key cap, and at this time, the personnel need to manually assist in taking down, and the manual taking down can only take down the key cap one by one, which affects the production efficiency of the key cap, so there is still some deficiency in use.

[0004] Therefore, it is necessary to invent a keyboard key injection mold secondary ejection mechanism. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a keyboard key injection mold secondary ejection mechanism to solve the problem that the existing mold mostly sets an ejector pin to eject the key cap, but because of the structure design of the forming groove, the displacement length of the ejector pin is often not enough to completely eject the key cap, and at this time, the personnel need to manually assist in taking down.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a keyboard key injection mold secondary ejection mechanism, including the bottom die, the outer wall top of the bottom die is fixed with the positioning rod in four corner places, the outer wall top of the bottom die is installed with the material ejection mold, the outer wall top of the material ejection mold is installed with the bottom forming die, the outer wall top of the bottom forming die is installed with the upper forming die, the inner wall top of the bottom forming die is provided with the forming groove, and the inside of the bottom die and the material ejection mold is provided with the material ejection component that ejects the injection molding part.

[0007] Preferably, the inner wall center of the material ejection mold is provided with a groove, the material ejection component includes a lifting seat, the inner wall upper and lower ends of the groove are fixed with guide rods at four corner positions and the lifting seat, and the outer wall upper and lower ends of the lifting seat are connected with the outer wall of the guide rod through the opening sliding hole.

[0008] Preferably, the bottom of the inner wall of the forming groove is provided with a push rod mounting groove, the bottom of the push rod mounting groove is connected to the empty groove, the inner wall of the push rod mounting groove is slidably connected with a push rod, and an annular block is fixed at the upper end of the inner wall of the push rod mounting groove.

[0009] Preferably, the outer wall of the top material rod is slidably connected to the clearance hole opened at the center of the annular block, and a limit plate is fixed to the outer wall of the top material rod at the bottom end of the annular block. A return spring is sleeved on the outer wall of the top material rod, and the upper and lower ends of the return spring are respectively connected to the outer wall of the annular block and the limit plate on opposite sides.

[0010] Preferably, an embedded slider is slidably connected at the center of the top of the outer wall of the top mold through a receiving groove. The outer wall side of the embedded slider is fixed with a limit slider, and the inner wall side of the receiving groove is slidably connected to the limit slider through a limit groove.

[0011] Preferably, a pin is fixed at the top of the outer wall of the embedded slider and at the position corresponding to the top rod, and a top hole for inserting the pin is opened at the bottom of the outer wall of the top rod and at the position corresponding to the pin.

[0012] Preferably, a hydraulic oil groove is provided at the center of the inner wall of the bottom mold, a rubber piston is slidably connected to the inner wall of the hydraulic oil groove, a sliding rod is fixed to the top of the outer wall of the rubber piston, and the top of the sliding rod passes through the slot and is fixedly connected to the center of the bottom of the outer wall of the lifting seat.

[0013] Preferably, an electrically controlled telescopic rod is installed at the top of the inner wall of the slide rod through a slot. The top output end of the electrically controlled telescopic rod passes through the receiving slot and is fixedly connected to the center of the bottom end of the outer wall of the embedded slider. Hydraulic oil pipelines are connected to both sides of the inner wall of the bottom mold and the hydraulic oil tank. A control valve for controlling the delivery of hydraulic oil is fixed on the hydraulic oil pipeline.

[0014] The beneficial effects of this utility model are:

[0015] In this invention, the electrically controlled telescopic rod can lift the embedded slider upwards, allowing the ejector pin to push the ejector rod to eject the keycap. If jamming occurs, hydraulic oil can be supplied to the hydraulic oil tank via the hydraulic oil pipe, causing the slide rod to lift the ejector mold upwards for a secondary ejection. This method eliminates the need for manual material handling, thereby improving the efficiency of keycap ejection and making it more convenient for users. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the present invention viewed from the front.

[0017] Figure 2 This is a cross-sectional view of the present invention from the front view.

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point B;

[0019] Figure 4 This is a partial cross-sectional view of the lifting seat and sliding rod in the front view of this utility model;

[0020] Figure 5 In this utility model Figure 4 Enlarged structural diagram at point A;

[0021] Figure 6 This is a three-dimensional structural diagram of the top material rod in this utility model.

[0022] In the diagram: 100, bottom mold; 110, hydraulic oil pipe; 120, hydraulic oil tank; 200, slide bar; 210, rubber piston; 220, electrically controlled telescopic rod; 300, ejector mold; 310, lifting seat; 311, guide rod; 320, embedded slider; 321, ejector pin; 322, limiting slider; 400, bottom forming mold; 410, forming groove; 420, ejector rod; 421, annular block; 430, limiting plate; 431, return spring; 432, top hole; 500, upper forming mold. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] See attached document Figures 1-6 This utility model provides a secondary ejection mechanism for a keyboard key injection mold, including a bottom mold 100. Positioning rods are fixed at the four corners of the top edge of the outer wall of the bottom mold 100. These positioning rods are used to fix the bottom mold 100, the ejector mold 300, the bottom forming mold 400, and the upper forming mold 500 together. The positioning rods can be screw structures, which can fix the ejector mold 300, the bottom forming mold 400, and the upper forming mold 500 together using nuts. The ejector mold 300 is installed above the top edge of the outer wall of the bottom mold 100, the bottom forming mold 400 is installed above the top edge of the outer wall of the ejector mold 300, and the upper forming mold 500 is installed above the top edge of the outer wall of the bottom forming mold 400. A forming groove 410 is provided at the top edge of the inner wall of the bottom forming mold 400.

[0025] The bottom mold 100 and the top mold 300 are equipped with ejector components for ejecting the injection molded parts. A slot is formed at the center of the inner wall of the top mold 300. The ejector component includes a lifting seat 310. Guide rods 311 are fixed at the upper and lower ends of the inner wall of the slot and at the four corners of the lifting seat 310. The upper and lower ends of the outer wall of the lifting seat 310 are slidably connected to the outer wall of the guide rods 311 through sliding holes. The guide rods 311 are used to restrict the sliding direction of the lifting seat 310. Ejector rod mounting slots are formed at the bottom of the inner wall of the forming groove 410. The bottom end of the ejector rod mounting slot communicates with the slot. Ejector rods 420 are slidably connected to the inner wall of the ejector rod mounting slots. The ejector rods 420 move upward under the action of the ejector pins 321 to eject the keycap. The ejector rod 420 is ejected from the forming groove 410. An annular block 421 is fixed to the upper end of the inner wall of the ejector rod mounting groove. The outer wall of the ejector rod 420 is slidably connected to the clearance hole opened at the center of the annular block 421. A limiting plate 430 is fixed to the outer wall of the ejector rod 420 and the bottom end of the annular block 421. A return spring 431 is sleeved on the outer wall of the ejector rod 420. The upper and lower ends of the return spring 431 are respectively connected to the outer walls of the annular block 421 and the limiting plate 430 on opposite sides. The annular block 421 is set to cooperate with the limiting plate 430 to fix the upper and lower ends of the return spring 431. The return spring 431 is in a stretched state under normal conditions. Its function is to allow the ejector rod 420 to move downward to reset when there is no external force.

[0026] An embedded slider 320 is slidably connected to the center of the top of the outer wall of the ejector mold 300 via a receiving groove. Limiting sliders 322 are fixed to the outer side of the embedded slider 320. The inner side of the receiving groove is slidably connected to the limiting sliders 322 via limiting grooves. The limiting sliders 322 are used to limit the upward sliding distance and direction of the embedded slider 320. Ejector pins 321 are fixed at the top of the outer wall of the embedded slider 320 and at positions corresponding to the ejector rod 420. Ejector pins 321 are fixed at the bottom of the outer wall of the ejector rod 420 and at positions corresponding to the ejector pins 321. Each position has a top hole 432 for inserting a ejector pin 321. When the ejector pin 321 moves upward, it can be inserted into the top hole 432, allowing the ejector rod 420 to move upward and eject the keycap. A hydraulic oil groove 120 is provided at the center of the inner wall of the bottom mold 100. A rubber piston 210 is slidably connected to the inner wall of the hydraulic oil groove 120. A slide rod 200 is fixed to the top of the outer wall of the rubber piston 210. The top of the slide rod 200 passes through the slot and is fixedly connected to the center of the bottom end of the outer wall of the lifting seat 310. When the slide rod 200 moves up and down, it can drive the ejector mold 3. Together, they move up and down. An electrically controlled telescopic rod 220 is installed at the top of the inner wall of the slide rod 200 through a slot. A wiring harness for powering the electrically controlled telescopic rod 220 is installed at the front end of the outer wall of the bottom mold 100 through an opening. The top output end of the electrically controlled telescopic rod 220 passes through a receiving slot and is fixedly connected to the center of the bottom end of the outer wall of the embedded slider 320. Hydraulic oil pipes 110 are connected to both sides of the inner wall of the bottom mold 100 and the inner wall of the hydraulic oil tank 120. A control valve for controlling the hydraulic oil delivery is fixed on the hydraulic oil pipe 110. The electrically controlled telescopic rod 220, when energized, can control its delivery. The output end pushes the embedded slider 320 to move up and down, so that when the embedded slider 320 moves upward, it can lift the ejector pin 321 and the ejector rod 420 to eject the keycap. The hydraulic oil supply pipe 110 can send hydraulic oil into the hydraulic oil tank 120 or discharge hydraulic oil from the hydraulic oil tank 120. When hydraulic oil is sent in, the hydraulic oil will lift the rubber piston 210 upward, so that the ejector mold 300 moves upward as a whole. In conjunction with the embedded slider 320, it can play a secondary ejection role. The other end of the hydraulic oil supply pipe 110 can be connected to the oil pump in the hydraulic oil tank.

[0027] The usage process of this utility model is as follows: First, personnel can assemble the device according to the above instructions. Then, personnel can inject material into the forming groove 410 through the injection port at the top of the upper forming mold 500 to form the keycap. After the keycap cools and forms, personnel can remove the upper forming mold 500. Then, the electric control telescopic rod 220 can be energized to extend its output end, so that the embedded slider 320 can drive the ejector pin 321 to move upward. After the ejector pin 321 abuts against the top hole 432, it can lift the ejector rod 420 upward. The lifted ejector rod 420 can push the keycap out of the forming groove 410. At the same time, the reset spring 431 will be in a compressed state. After the ejection is completed, the electric control telescopic rod 220 can retract, and the ejector rod 421 will move downward under the action of the reset spring 431 to reset.

[0028] Then, when a jam occurs, the hydraulic oil in the hydraulic oil tank can be transported to the bottom of the hydraulic oil tank 120 through the hydraulic oil pipeline 110 by the oil pump. The hydraulic oil will push the slide rod 200 and the rubber piston 210 upward, so that the slide rod 200 can lift the lifting seat 310 upward, thereby enabling the keycap to be ejected a second time. After the ejection is completed, the hydraulic oil can be discharged through the hydraulic oil pipeline 110, so that the lifting seat 310 can move downward to reset, making it convenient for the next injection molding production of the keycap.

[0029] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A secondary ejection mechanism for a keyboard button injection mold, comprising a bottom mold (100), wherein positioning rods are fixed at the four corners of the top edge of the outer wall of the bottom mold (100), an ejector mold (300) is installed above the top edge of the outer wall of the bottom mold (100), a bottom forming mold (400) is installed above the top edge of the outer wall of the ejector mold (300), and an upper forming mold (500) is installed at the top edge of the outer wall of the bottom forming mold (400), characterized in that: The bottom forming mold (400) has a forming groove (410) at the top of its inner wall. Each forming groove (410) has a push rod mounting groove at its bottom. The bottom of the push rod mounting groove is connected to an empty groove. Each push rod mounting groove has a sliding push rod (420) connected to its inner wall. An annular block (421) is fixed to the upper end of the inner wall of the push rod mounting groove. An embedded slider (320) is slidably connected to the center of the top ... Ejector pins (321) are fixed at positions corresponding to the ejector rod (420). The bottom of the outer wall of the ejector rod (420) and at positions corresponding to the ejector pins (321) are provided with top holes (432) for inserting the ejector pins (321). A hydraulic oil groove (120) is provided at the center of the inner wall of the bottom mold (100). A rubber piston (210) is slidably connected to the inner wall of the hydraulic oil groove (120). A slide rod (200) is fixed at the top of the outer wall of the rubber piston (210). The top of the slide rod (200) passes through the empty groove and is fixedly connected to the center of the bottom of the outer wall of the lifting seat (310). The bottom mold (100) and the ejector mold (300) are provided with ejector components for ejecting the injection molded parts.

2. The secondary ejection mechanism for a keyboard button injection mold according to claim 1, characterized in that: The inner wall of the top material mold (300) is provided with a slot. The top material component includes a lifting seat (310). Guide rods (311) are fixed at the upper and lower ends of the inner wall of the slot and at the four corners of the lifting seat (310). The upper and lower ends of the outer wall of the lifting seat (310) are slidably connected to the outer wall of the guide rods (311) through sliding holes.

3. The secondary ejection mechanism for a keyboard button injection mold according to claim 2, characterized in that: The outer wall of the top material rod (420) is slidably connected to the clearance hole opened at the center of the annular block (421). The outer wall of the top material rod (420) and the bottom end of the annular block (421) are fixed with a limiting plate (430). The outer wall of the top material rod (420) is fitted with a return spring (431). The upper and lower ends of the return spring (431) are respectively connected to the outer wall of the annular block (421) and the limiting plate (430) on opposite sides.

4. The secondary ejection mechanism for a keyboard button injection mold according to claim 3, characterized in that: The top of the inner wall of the slide bar (200) is fitted with an electrically controlled telescopic rod (220) through a slot. The top output end of the electrically controlled telescopic rod (220) passes through the storage slot and is fixedly connected to the center of the bottom of the outer wall of the embedded slider (320). The bottom mold (100) is connected to hydraulic oil pipes (110) on both sides of the inner wall of the hydraulic oil tank (120). A control valve for controlling the delivery of hydraulic oil is fixed on the hydraulic oil pipes (110).

Images