Shell injection molding device of automobile key

Abstract

The utility model discloses a shell injection molding device of an automobile key, which belongs to the field of automobile production and comprises a key shell and a shell injection molding machine, and an upper shell body and a lower shell body of the key shell are connected through a plurality of pin structures. The shell injection molding machine comprises an injection molding machine body, a movable mold plate located at the upper end of the key shell, a fixed mold plate located at the lower end of the key shell and a push-out assembly for demolding. Compared with the prior art, the device has the advantages that the push-out assembly of the key shell is arranged on the bottom face of the pin hole in the key shell, the safety of a shaft rod where the pin hole is located can be guaranteed while the key shell is demolded through the demolding shaft sleeve, and the situation that the pin hole shaft rod is broken due to uneven stress is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile production, specifically point to a kind of shell injection molding device of automobile key. BACKGROUND

[0002] With the continuous development of automobile industry, the starting mode of automobile is also gradually changed from traditional key starting to electronic key starting commonly used at present, and the door can also be opened and closed by electronic key, and the shell of the electronic key at present is mostly plastic structure, and its processing mode is injection molding.

[0003] The shell injection molding machine at present is usually composed of an injection molding machine body, a movable mold plate located at the upper end of the key shell and a fixed mold plate located at the lower end of the key shell, and a push-out assembly for demolding the key shell is installed below the fixed mold plate. During processing, the mold cavity formed by the closure of the movable mold plate and the fixed mold plate serves as the mold of the key shell. After the injection of plastic glue, the mold of the key shell is filled through the flow channel, and then it is set after cooling. Finally, the mold is opened, and the finished product is pushed out of the mold by the push-out assembly.

[0004] The key shell at present is usually connected by a plurality of pin structures. These pins can not only be used for connecting the upper and lower shells of the key, but also can be used for fixing the position of the internal chip. However, when the key shell is injection molded, the structure of the pin is small, which makes it prone to bending or breaking of the pin or pin hole during demolding if the force is uneven. Moreover, the front side of the key shell is internally provided with a plurality of key slot grooves, which makes the force receiving surface even smaller. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is that the shell injection molding device of the automobile key is prone to bending or breaking of the pin or pin hole in the key shell during demolding.

[0006] To solve the above technical problems, the utility model provides a technical scheme: a shell injection molding device of an automobile key, which comprises a key shell and a shell injection molding machine. The upper and lower shells of the key shell are connected by a plurality of pin structures. The shell injection molding machine comprises an injection molding machine body, a movable mold plate located at the upper end of the key shell, a fixed mold plate located at the lower end of the key shell, and a push-out assembly for demolding.

[0007] The push-out assembly comprises a pin hole positioning rod passing through the fixed mold plate and the key shell pin hole, a demolding shaft sleeve sleeved on the outer wall of the pin hole positioning rod, and a unified plate connected by bolts to each demolding shaft sleeve. The demolding shaft sleeve and the unified plate both pass through the fixed mold plate.

[0008] As improvement, the integrated plate is T-shaped structure, the movable push plate 5 between the fixed mold plate and the base of the injection molding machine body is arranged to connect the bottom surface of the vertical shaft rod of the integrated plate, and the bottom surface of the movable push plate 5 is provided with a hydraulic telescopic assembly penetrating through the base of the injection molding machine body.

[0009] As improvement, the demolding shaft sleeve is connected with the pin hole positioning rod through the high-temperature-resistant anti-sticking gasket.

[0010] As improvement, the pin hole positioning rod penetrates through the movable push plate 5, and the pin hole positioning rod is connected with the base of the injection molding machine body through a bolt structure.

[0011] As improvement, the runner of the movable mold plate is a multi-hole shunt runner.

[0012] As improvement, the top of the movable mold plate is provided with a plurality of top end movable mold plate push-pull assemblies penetrating through the injection molding machine body.

[0013] Compared with the prior art, the device sets the push-out assembly of the key shell at the bottom surface of the pin hole in the key shell, and can ensure the safety of the shaft rod of the pin hole while demolding the key shell through the demolding shaft sleeve, thereby avoiding the breakage of the shaft rod of the pin hole due to uneven stress. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a total structure view of the shell injection molding device of the automobile key.

[0015] Figure 2 is a total structure sectional view of the shell injection molding device of the automobile key.

[0016] Figure 3 is an explosion view of the push-out assembly of the shell injection molding device of the automobile key.

[0017] Figure 4 is a key shell structure view of the shell injection molding device of the automobile key.

[0018] As shown in the drawings: 1, key shell; 2, shell injection molding machine; 21, injection molding machine body; 22, movable mold plate; 221, movable mold plate push-pull assembly; 23, fixed mold plate; 24, push-out assembly; 241, pin hole positioning rod; 242, demolding shaft sleeve; 243, integrated plate; 244, high-temperature-resistant anti-sticking gasket; 25, movable push plate; 26, hydraulic telescopic assembly. DETAILED DESCRIPTION

[0019] The utility model makes further detailed description in combination with the drawings.

[0020] As described in the specification Figure 1 , 2As shown, the shell injection molding machine 2 includes an injection molding machine body 21, a movable mold plate 22 located at the upper end of the key shell 1, a fixed mold plate 23 located at the lower end of the key shell 1, and an ejection assembly 24, the runner of the movable mold plate 22 is a multi-hole shunt runner, and the top of the movable mold plate 22 is provided with a plurality of top movable mold plate push-pull assemblies 221 penetrating the injection molding machine body 21. The runner inside the movable mold plate 22 is designed as a multi-hole shunt runner, which can ensure that the key shell 1 is evenly distributed during injection, the cooling time is relatively stable, and the key shell 1 will not be locally cooled too slowly during cooling. The movable mold plate 22 body is installed below the top end of the injection molding machine body 21, and the top surface of the movable mold plate 22 is welded to the movable mold plate push-pull assembly 221 outside the injection molding machine body 21. The movement of the movable mold plate 22 is controlled by the movable mold plate push-pull assembly 221.

[0021] As shown in the accompanying drawings Figure 1 , 3 As shown, the ejection assembly 24 includes a pin hole positioning rod 241 penetrating the pin hole of the fixed mold plate 23 and the key shell 1, a demolding shaft sleeve 242 sleeved on the outer wall of the pin hole positioning rod 241, and a unified plate 243 connecting each demolding shaft sleeve 242 through a bolt structure, the demolding shaft sleeve 242 and the unified plate 243 penetrate the fixed mold plate 23, the demolding shaft sleeve 242 is connected with the pin hole positioning rod 241 through a high-temperature-resistant anti-sticking gasket 244,

[0022] The unified plate 243 is a T-shaped structure, the fixed mold plate 23 and the base of the injection molding machine body 21 are provided with a movable push plate 25 connecting the vertical shaft rod bottom surface of the unified plate 243, the bottom surface of the movable push plate 25 is provided with a hydraulic telescopic assembly 26 penetrating the base of the injection molding machine body 21, the pin hole positioning rod 241 penetrates the movable push plate 25, and the pin hole positioning rod 241 is connected with the base of the injection molding machine body 21 through a bolt structure, the fixed mold plate 23 is installed on the middle layer directly below the movable mold plate 22, the high-temperature-resistant anti-sticking gasket 244 is inserted into the demolding shaft sleeve 242, then the bottom surface of each demolding shaft sleeve 242 is connected to the fixed surface at the top end of the unified plate 243 using screws, the pin hole positioning rod 241 is inserted into the demolding shaft sleeve 242, and finally the demolding shaft sleeve 242 is inserted into the bottom surface via hole of the fixed mold plate 23, so that the rod surface of the pin hole positioning rod 241 becomes a mold column inside the pin hole; the shaft rod at the bottom surface of the unified plate 243 is fixed on the movable push plate 25 using screws; in order to ensure the stability of the length of the pin hole positioning rod 241, the bottom surface of the pin hole positioning rod 241 is fixed on the bottom surface of the injection molding machine body 21 using screws, and finally the output shaft of the hydraulic telescopic assembly 26 penetrates the base of the injection molding machine body 21 and is welded to the bottom surface of the movable push plate 25.

[0023] As shown in the accompanying drawings Figure 4As shown, including key shell 1 and shell injection molding machine 2, the upper and lower shell of the key shell 1 is connected by a number of pin structure, and on the upper shell of the key shell 1 also has a plurality of key recess, these pins or pin holes are located on the main force surface inside the key shell 1, on one side of the key shell 1 inside also designed with the placement of the recess of the solid key.

[0024] The utility model discloses in the specific implementation, start the movable platen push-pull assembly 221, close movable platen 22 and fixed platen 23, start injection machine, and the raw material liquid flows into the platen from the porous shunt runner, after injection, cool one end time, make the key shell 1 set, then open movable platen 22, and start hydraulic telescopic component 26, make the movable push plate 25 push upward, thereby make the stripper shaft sleeve 242 synchronous slide upward, to this end complete the demolding operation of the key shell 1 pin hole bottom surface.

[0025] The above describes the utility model and its implementation, this kind of description has no limit, and the embodiment shown in the drawings is only one of the utility model, and the actual structure is not limited to this. In general, if the ordinary skilled in the art is inspired, without departing from the utility model creation tenet, does not create the structure mode and the embodiment similar to this technical scheme without the creative design, should belong to the protection scope of the utility model.

Claims

1. An injection molding device for the housing of an automobile key, comprising a key shell (1) and an injection molding machine (2), the upper and lower shells of the key shell (1) being connected by a plurality of pin structures, the injection molding machine (2) comprising an injection molding machine body (21), a movable mold plate (22) located at the upper end of the key shell (1), a fixed mold plate (23) located at the lower end of the key shell (1), and an ejecting assembly (24) for demolding, characterized in that: the ejecting assembly (24) comprises a pin hole positioning rod (241) passing through the pin hole of the fixed mold plate (23) and the key shell (1), an ejecting shaft sleeve (242) sleeved on the outer wall of the pin hole positioning rod (241), and a unification plate (243) connecting each ejecting shaft sleeve (242) by bolt structure, the ejecting shaft sleeve (242) and the unification plate (243) both passing through the fixed mold plate (23). The unification plate (243) is a T-shaped structure, and a movable push plate (25) connecting the bottom surface of the vertical shaft of the unification plate (243) is arranged between the fixed mold plate (23) and the base of the injection molding machine body (21), and the bottom surface of the movable push plate (25) is provided with a hydraulic telescopic assembly (26) passing through the base of the injection molding machine body (21).

2. The injection molding device for the shell of an automobile key according to claim 1, wherein: The ejecting shaft sleeve (242) is connected with the pin hole positioning rod (241) through a high-temperature-resistant anti-sticking gasket (244).

3. The injection molding device for the shell of an automobile key according to claim 1, wherein: The pin hole positioning rod (241) passes through the movable push plate (25), and the pin hole positioning rod (241) is connected with the base of the injection molding machine body (21) by bolt structure.

4. The injection molding device for the shell of an automobile key according to claim 3, wherein: The flow channel of the movable mold plate (22) is a multi-hole shunt flow channel.

5. The injection molding device for the shell of an automobile key according to claim 1, wherein: A plurality of top movable mold plate push-pull assemblies (221) passing through the injection molding machine body (21) are arranged above the movable mold plate (22).

6. The injection molding device for a housing of a car key according to claim 1, wherein: ​

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