Processing method of mobile phone card holder

Abstract

According to the processing method of the mobile phone card support, the continuous die is adopted, the stamping die, the injection molding die and the liquid silicone rubber die are used for processing the card support, continuous punching, injection molding and cutting processing are achieved, meanwhile, the positioning holes are formed in the material belt and used for conducting positioning injection molding and punching processing on the material belt, and the processing efficiency is improved. According to the machining method, the manual operation cost is reduced, the manufacturing efficiency of the card support is effectively improved, and the percent of pass of the card support is effectively increased.

Description

Technical Field

[0001] The invention relates to the technical field of processing a mobile phone card tray, in particular to a processing method of a mobile phone card tray. Background Art

[0002] The mobile phone SIM card tray is a device for fixing and protecting the SIM card. It can help the SIM card to be fixed in the mobile phone and not fall easily, and can prevent the SIM card from being damaged or lost. At present, many thinner mobile phones use drawer-type card trays. In order to make the card tray reach a certain strength, a combination of metal parts and injection molded parts is adopted, that is, the card tray includes a metal support part, and then the card tray body is injection molded outside the metal support part. In order to achieve a waterproof effect, a liquid silicone sealing ring needs to be injection molded on the card tray body. For this kind of waterproof mobile phone card tray, the processing method currently used is to first place the processed metal support parts one by one for injection molding into a single product structure, and then manually place the single product into the liquid silicone mold for secondary injection molding of the sealing gasket. Manual operation can easily lead to inaccurate product positioning, and the molded sealing gasket is prone to poor processing such as cloaking, which affects the processing quality of the product. At the same time, the processing method is relatively cumbersome and has low production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a method for processing a mobile phone card tray to solve the technical problems in the background technology.

[0004] To achieve the aforementioned purpose, the present invention provides the following technical solutions:

[0005] A method for processing a mobile phone card tray adopts a continuous die and includes the following processing steps:

[0006] Step S1, punching a steel sheet, using a stamping die to punch a steel sheet strip, punching a first forming part, wherein the first forming part includes a metal support and a positioning frame, wherein the metal support is in the positioning frame, and at least one first positioning hole is punched on the positioning frame synchronously, and at least one second positioning hole is provided on the adjacent positioning frame, so as to form a first strip;

[0007] Step S2, injection molding the card tray body, using an injection mold to injection mold the metal support part position in step S1 to form the card tray body, wherein the second material strip is formed in the metal support part card tray body;

[0008] Step S3, injection molding a sealing gasket, using a liquid silicone mold to injection mold a sealing gasket on the card holder body on the second material strip in step S2 to form a third material strip;

[0009] Step S4, cutting, punching the tray body formed in the third material strip in step S3 into individual products.

[0010] The positioning frame comprises a hollow U-shaped body, the metal support is inside the U-shaped body, and at least two positioning rods are symmetrically arranged on the left and right sides of the metal support, and the two positioning rods on one side are parallel to each other.

[0011] The liquid silicone mold includes an upper mold and a lower mold. The lower mold includes a lower mold base plate, an ejector assembly, an ejector plate and a lower mold plate from bottom to top. A lower mold core is installed in the lower mold plate for molding a sealing gasket. An inwardly concave feed groove is provided on the lower mold plate along the feeding direction of the material belt, and the feed groove is communicated with the lower mold core.

[0012] The feed trough is located at the left and right ends of the lower mold plate, the lower mold core includes a fixed block and several mold core blocks installed in the fixed block and arranged side by side, the mold core block includes a molding part and a positioning part, the molding part is at the front end of the positioning part, the positioning part is provided with a concave first positioning groove for placing the card holder body, the first positioning groove is provided with a first guide groove corresponding to the position of the positioning rod, and the molding part is used for injection molding a sealing gasket.

[0013] A first through hole is provided between adjacent core blocks, and a positioning column is installed in the first through hole and plugged into the second positioning hole.

[0014] A second through hole is provided on the side of the positioning part close to the forming part, and a limiting guide column is installed in the second through hole. A concave limiting groove is provided on the top of the limiting guide column. The positioning rod is in the limiting groove. The limiting groove is an open structure. The limiting groove passes through the left and right sides of the limiting guide column and communicates with the first positioning groove.

[0015] Compared with the prior art, the processing method of a mobile phone card tray of the present application adopts a continuous mold processing method to perform punching and injection molding on the card tray. The processing of the product is more precise and reduces defects such as cloaking of the product due to inaccurate positioning. The processing method of the present application can effectively reduce labor costs and improve the production efficiency and pass rate of the card tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : The first material strip structure diagram in this application;

[0017] Figure 2 : The second material strip structure diagram in this application;

[0018] Figure 3 : The third material strip structure diagram in this application;

[0019] Figure 4 : Three-dimensional structure diagram of the lower mold of the liquid silicone mold;

[0020] Figure 5 : Structural diagram of a single core block;

[0021] Figure 6 : A structural diagram of the placement position of a single mold core block and the first molding part;

[0022] Figure 7 : Three-dimensional structure diagram of the limiting guide column. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Specific embodiment 1: Please refer to Figures 1 to 7 In an embodiment of the present invention, a method for processing a mobile phone card tray adopts a continuous die and includes the following processing steps:

[0025] Step S1, punching a steel sheet, using a stamping die to punch out a steel sheet strip, punching out a first forming part 902-2A, the first forming part 902-2A includes a metal support 102 and a positioning frame 101, the metal support 102 is in the positioning frame 101, at least one first positioning hole 101-1 is punched out synchronously on the positioning frame 101, and at least one second positioning hole 101-2 is provided on the adjacent positioning frame 101. In this embodiment, one second positioning hole 101-2 is provided on the adjacent positioning frame 101, and the steel sheet strip processed in this process forms a first strip 1; the positioning frame 101 includes a hollow U-shaped body, the metal support 102 is in the U-shaped body, and at least two positioning rods 101-3 are symmetrically provided on the left and right sides of the metal support 102, and the two positioning rods 101-3 on one side are parallel to each other;

[0026] Step S2, injection molding the card tray body 201, using an injection mold to mold the card tray body 201 at the position of the metal support part 102 in step S1, a corresponding guide column is installed in the injection mold and plugged into the first positioning hole 101-1, and the metal support part 102 is positioned and injection-molded using the first positioning hole 101-1, and the metal support part 102 is in the card tray body 201, forming a second material strip 2;

[0027] Step S3, injection molding the sealing gasket 301, using a liquid silicone mold to injection mold the sealing gasket 301 on the card holder body 201 on the second material strip 2 in step S2, and using the second positioning hole 101-2 in the liquid silicone mold to achieve positioning injection molding to form a third material strip 3;

[0028] Step S4, cutting, punching the tray body 201 formed in the third material strip 3 in step S3 into individual products.

[0029] In this embodiment, the liquid silicone mold includes an upper mold and a lower mold 4. The lower mold 4 includes, from bottom to top, a lower mold base plate 5, an ejector assembly 6, an ejector plate 7 and a lower mold plate 8. A lower mold core 9 is installed in the lower mold plate 8 for molding a sealing gasket 301. An inwardly concave feed groove 801 is provided on the lower mold plate 8 along the feeding direction of the material belt, and the feed groove 801 is communicated with the lower mold core 9.

[0030] The feed trough 801 is at the left and right ends of the lower mold plate 8. The lower mold core 9 includes a fixed block 901 and several mold core blocks 902 installed in the fixed block 901 and arranged side by side. The mold core block 902 includes a molding part 902-2 and a positioning part 902-1. The molding part 902-2 is at the front end of the positioning part 902-1. The positioning part 902-1 is provided with a concave first positioning groove 902-1-1 for placing the card holder body 201. The first positioning groove 902-1-1 is provided with a first guide groove 902-1-2 corresponding to the position of the positioning rod 101-3. The molding part 902-2 is used for injection molding the sealing gasket 301.

[0031] A first through hole 902-1-3 is provided between adjacent core blocks 902, and a positioning column 10 is installed in the first through hole 902-1-3 and plugged into the second positioning hole 101-2. A second through hole 902-1-4 is provided on the side of the positioning portion 902-1 close to the molding portion 902-2, and a limiting guide column 11 is installed in the second through hole 902-1-4. A concave limiting groove 1101 is provided on the top of the limiting guide column 11, and the positioning rod 101-3 is in the limiting groove 1101. The limiting groove 1101 is an open structure, and the opening of the limiting groove 1101 is a V-shaped structure. The limiting groove 1101 runs through the left and right sides of the limiting guide column 11 and communicates with the first positioning groove 902-1-1. When the second material strip 2 is conveyed to the liquid silicone mold, the second material strip 2 is attached to the upper mold of the liquid silicone mold. As the upper mold is pressed downward, the card holder body 201 is placed in the first positioning groove 902-1-1 accordingly. At the same time, the positioning rod 101-3 is inserted into the limit groove 1101 and the first guide groove 902-1-2, and the positioning column 10 is also synchronously inserted into the second positioning hole 101-2 on the second material strip 2 to accurately position the card holder body 201, and then the sealing gasket 301 is molded and formed, and then the ejector assembly 6 is used to eject the processed parts.

[0032] Compared with the prior art, the processing method of a mobile phone card tray of the present application adopts a continuous mold processing method to perform punching and injection molding on the card tray. The processing of the product is more precise and reduces defects such as cloaking of the product due to inaccurate positioning. The processing method of the present application can effectively reduce labor costs and improve the production efficiency and pass rate of the card tray.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for processing a mobile phone card tray, characterized in that: A continuous die is used, including the following processing steps: Step S1, punching a steel sheet, using a stamping die to punch a steel sheet strip, punching a first forming part, wherein the first forming part includes a metal support and a positioning frame, wherein the metal support is in the positioning frame, and at least one first positioning hole is punched on the positioning frame synchronously, and at least one second positioning hole is provided on the adjacent positioning frame, so as to form a first strip; Step S2, injection molding the card tray body, using an injection mold to injection mold the metal support part position in step S1 to form the card tray body, wherein the second material strip is formed in the metal support part card tray body; Step S3, injection molding a sealing gasket, using a liquid silicone mold to injection mold a sealing gasket on the card holder body on the second material strip in step S2 to form a third material strip; Step S4, cutting, using a cutting machine to punch out the tray body formed in the third material strip in step S3 into individual products.

2. A method for processing a mobile phone card tray according to claim 1, characterized in that: The positioning frame comprises a hollow U-shaped body, the metal support is inside the U-shaped body, and at least two positioning rods are symmetrically arranged on the left and right sides of the metal support, and the two positioning rods on one side are parallel to each other.

3. A method for processing a mobile phone card tray according to claim 2, characterized in that: The liquid silicone mold includes an upper mold and a lower mold. The lower mold includes a lower mold base plate, an ejector assembly, an ejector plate and a lower mold plate from bottom to top. A lower mold core is installed in the lower mold plate for molding a sealing gasket. An inwardly concave feed groove is provided on the lower mold plate along the feeding direction of the material belt, and the feed groove is communicated with the lower mold core.

4. A method for processing a mobile phone card tray according to claim 3, characterized in that: The feed trough is located at the left and right ends of the lower mold plate, the lower mold core includes a fixed block and several mold core blocks installed in the fixed block and arranged side by side, the mold core block includes a molding part and a positioning part, the molding part is at the front end of the positioning part, the positioning part is provided with a concave first positioning groove for placing the card holder body, the first positioning groove is provided with a first guide groove corresponding to the position of the positioning rod, and the molding part is used for injection molding a sealing gasket.

5. A method for processing a mobile phone card tray according to claim 4, characterized in that: A first through hole is provided between adjacent core blocks, and a positioning column is installed in the first through hole and plugged into the second positioning hole.

6. A method for processing a mobile phone card tray according to claim 5, characterized in that: A second through hole is provided on the side of the positioning part close to the forming part, and a limiting guide column is installed in the second through hole. A concave limiting groove is provided on the top of the limiting guide column. The positioning rod is in the limiting groove. The limiting groove is an open structure. The limiting groove passes through the left and right sides of the limiting guide column and communicates with the first positioning groove.

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