WO2019090898A1

WO2019090898A1 - Mobile phone multi-plane protective film forming process

Info

Publication number: WO2019090898A1
Application number: PCT/CN2017/116681
Authority: WO
Inventors: 王春生; 贾志江; 姚永奇
Original assignee: 苏州安洁科技股份有限公司
Priority date: 2017-11-08
Filing date: 2017-12-15
Publication date: 2019-05-16
Also published as: CN107671174A

Abstract

A mobile phone multi-plane protective film forming process. An inner recess cutting die (1) is fixed to a mounting cavity (4) defined by a lower removal plate (2) and a lower spacer (3). A vertical linear spring (5) is disposed between the lower removal plate (2) and the lower spacer (3), such that the lower removal plate (2) moves up and down relative to an upper exposed end of the inner recess cutting die (1). A press moves an upper die (6) downwards, and presses an upper end surface of the lower removal plate (2), such that the lower removal plate (2) is pressed downwards. At the same time, a material is pressed into contact with a corresponding upward protruding part of the inner recess cutting die (1), so as to form an inner recess. A central punch (7) is provided at a center position of a forming cavity of the lower removal plate (2). The central punch (7) is used to form a corresponding multi-plane part of a mobile phone film. The process is applicable to scrap-free punching, and achieves formation of a product in one die cutting step. The invention improves dimensional precision of a product, improves the efficiency of a punch, increases yield, and reduces production costs.

Description

Mobile phone 3D protective film forming process

[0001] The present invention relates to the technical field of manufacturing a 3D protective film for a mobile phone, and specifically relates to a mobile phone 3D protective film forming machine.

[0002] The processing of protective film in the mobile phone industry usually uses flat-blade stamping technology, traditional die-cutting technology, one-time stamping with inner groove products, and products with inner or inner grooves. The process limitation cannot achieve one-step stamping, and requires partial punching. After stamping, the product has large dimensional deviation and poor stability, which leads to an increase in product defect rate and an increase in production cost.

technical problem

Problem solution

Technical solution

[0003] In view of the above problems, the present invention provides a 3D protective film forming process for a mobile phone, which is used for scrap-free stamping, and realizes one-step stamping forming of the product, thereby improving product dimensional accuracy, improving punching efficiency, improving yield, and reducing Production costs.

[0004] A 3D protective film forming process for a mobile phone, characterized in that: the inner groove cutter is fixed in a mounting cavity formed by combining the lower strip and the lower pad, and the lower strip and the lower pad are A vertical linear spring is arranged between the plates, so that the lower off plate is lifted and lowered relative to the upper exposed end of the inner groove cutter, and the press drives the upper mold down, and is pressed down on the upper end surface of the lower strip to make the lower strip Pressing down, contacting the pressing material and the corresponding convex portion of the corresponding inner groove cutter to form an inner groove, and the center of the cavity of the lower strip is provided with a center 3D punch, the center 3D punch A corresponding three-dimensional portion for forming a cell phone film.

[0005] It is further characterized in that: an upper end surface of the center 3D punch is exposed to an upper end surface of the lower strip in a molding state;

[0006] the inner groove cutter is disposed on an outer circumference of the center 3D punch;

[0007] The bottom of the center 3D punch is fixed to the lower mold base by screws; [0008] the lower stripping plate and the lower pad plate are provided with mounting cavities corresponding to the corresponding positions of the center 3D punch and the inner groove die;

[0009] The inner groove cutter comprises an L-shaped die or a linear die, and the bending of the L-shaped die and the bending angle of the mobile phone film are the same.

Advantageous effects of the invention

Beneficial effect

[0010] After adopting the technology of the present invention, since a linear spring is disposed between the lower off plate and the lower pad side, the lower off plate can be lifted and lowered relative to the upper exposed end of the inner groove die under the action of the linear spring. The upper mold is fixed on the output end of the press, and the output end of the press is lifted off the mold. The lower strip is driven by the linear spring to rise together, and the lower strip is raised to a fixed position to stop, and the required material is used. Place the lower plate, press the machine down to a certain height, contact the lower strip, press the material down and continue down. When the press stops at a certain height, press the desired product through the center 3D punch and the inner groove cutter. The required products, the press lifts up and down the upper and lower molds, and the products required by the same as the lower strips rise together to remove the required products, which are used for scrap-free stamping, which realizes one-step stamping of the products, which improves the dimensional accuracy of the products. Improved stamping efficiency, improved yield, and reduced production costs.

Brief description of the drawing

DRAWINGS

1 is a schematic diagram showing the structure of a mold corresponding to the process of the present invention;

2 is a schematic plan view showing the structure of the center 3D punch, the inner groove cutter mold and the lower strip plate of the mold corresponding to the process of the present invention;

[0013] The names corresponding to the serial numbers in the figure are as follows:

[0014] inner groove cutter die 1, L-die die 11, linear cutter die 12, lower release plate 2, lower pad 3, mounting cavity 4, linear spring 5, upper die 6, center 3D punch 7, Screw 8, lower die holder 9.

BEST MODE FOR CARRYING OUT THE INVENTION

[0015] A mobile phone 3D protective film forming process, as shown in FIG. 1 and FIG. 2: by fixing the inner groove die 1 to the mounting cavity 4 formed by the combination of the lower strip 2 and the lower pad 3 , and the lower plate 2 and the lower plate 3 are arranged to be suspended Straight to the linear spring 5, so that the lower strip 2 is lifted and lowered relative to the upper exposed end of the inner recess die 1, the press drives the upper die 6 downward, and is pressed down on the upper end surface of the lower strip 2 to make the lower strip 2 pressing down, the same pressing material and the corresponding convex portion of the inner groove die 1 are in contact with each other to form an inner groove, and the center of the cavity of the lower strip 2 is provided with a center 3D punch 7, the center 3D punch 7 is used to form the corresponding three-dimensional part of the mobile phone film.

[0016] The upper end surface of the center 3D punch 7 is exposed to the upper end surface of the lower strip 2 in the formed state;

[0017] The inner groove cutter die 1 is disposed on the outer circumference of the center 3D punch 7;

[0018] The bottom of the center 3D punch 7 is fixed to the lower die holder 9 by screws 8;

[0019] The lower strip 2, the lower pad 3 corresponds to the center 3D punch 7, the corresponding position of the inner groove die 1 is provided with a mounting cavity 4;

[0020] The inner groove cutter die 1 includes an L-shaped die 11 or a linear die 12, and the bending of the L-die 11 is the same as the bending angle of the cell phone film.

[0021] The working principle is as follows: Since a linear spring is arranged between the lower off plate and the lower pad side, the lower off plate can be lifted and lowered relative to the upper exposed end of the inner groove die under the action of the linear spring, The upper mold is fixed on the output end of the press, and the output end of the press is lifted off the mold. The lower strip is driven by the linear spring to rise together, and the lower strip is raised to a fixed position to stop, and the required material is placed. On the stripping plate, the press goes down to a certain height, contacts the lower stripping plate, presses the material down and continues down. When the press goes down to a certain height, the required product is pressed and formed by the center 3D punch and the inner groove cutter. The product, the press lifts up and down the upper and lower molds, and the products required by the same as the lower strips rise together to remove the required products.

The specific embodiments of the present invention have been described in detail, but are not intended to limit the scope of the present invention. All changes and improvements made in accordance with the scope of application for the invention shall remain within the scope of this patent.

Claims

Claim

[Claim 1] A process for forming a 3D protective film of a mobile phone, which is characterized in that: the inner groove cutter is fixed in a mounting cavity formed by combining the lower strip and the lower pad, and the lower strip and the lower strip are A vertical linear spring is disposed between the lower pads, so that the lower release plate is lifted and lowered relative to the upper exposed end of the inner groove die, and the press drives the upper die down, and is pressed by the upper end surface of the lower release plate to make the lower plate The plate is pressed down, and the pressing material and the corresponding convex portion of the corresponding inner groove die are in contact with each other to form an inner groove, and the center of the cavity of the lower strip is provided with a center 3D punch, the center 3D The punch is used to form the corresponding three-dimensional portion of the cell phone film.

[Claim 2] The mobile phone 3D protective film forming process according to claim 1, wherein the upper end surface of the center 3D punch is exposed to the upper end surface of the lower strip in a molded state.

[Claim 3] A mobile phone 3D protective film forming process according to claim 2, wherein: the inner groove cutter is disposed on an outer circumference of the center 3D punch.

[Claim 4] A mobile phone 3D protective film forming process according to claim 1, wherein: the bottom of the center 3D punch is fixed to the lower die holder by screws.

[Claim 5] The method for molding a 3D protective film of a mobile phone according to claim 1, wherein: the lower stripping plate and the lower pad correspond to the corresponding correspondence of the center 3D punch and the inner groove die The position is provided with a mounting cavity.

[Claim 6] The method for molding a 3D protective film of a mobile phone according to claim 1, wherein: the inner groove cutter comprises an L-shaped die or a linear die, and the L-shaped die is folded. The bend and the phone film have the same bending angle.