CN213704525U - Hot bending device for rear cover of mobile phone formed by 3D composite board - Google Patents

Abstract

The utility model discloses a hot bending device for a rear cover of a 3D composite board forming mobile phone, which comprises a base, wherein a lower template, a profiling mold insert, a forming pressure plate component and an upper template are sequentially arranged on the base from bottom to top, and the lower template and the upper template can be mutually folded to form an airtight mold cavity; the profiling insert is provided with a heating assembly and a demoulding assembly; the molding pressing plate assembly comprises a first molding pressing plate assembly matched with the flat part of the rear cover of the mobile phone and a plurality of second molding pressing plate assemblies which are respectively arranged on the periphery of the first molding pressing plate assembly and matched with the frame part of the rear cover of the mobile phone. The utility model provides a curved device of heat with lid behind 3D composite sheet shaping cell-phone of brand-new structure through the cooperation of first shaping clamp plate subassembly and second shaping clamp plate for the product uniformity that the heat was bent out is better, and the qualification rate is higher.

Description

Hot bending device for rear cover of mobile phone formed by 3D composite board

Technical Field

The utility model belongs to the technical field of the technique of lid processing behind the cell-phone and specifically relates to a curved device of heat with lid behind 3D composite sheet shaping cell-phone.

Background

With the improvement of living standard of people, mobile phones have become indispensable daily necessities, and in recent years, not only is the requirements of consumers on the performance of the mobile phones higher and higher, but also the requirements on the comfort level and the appearance of the mobile phones are continuously improved. Therefore, manufacturers are constantly improving the appearance of the product in order to catch the eye of the public and get the favor of consumers.

Most of the mobile phone rear cover is made of plastic, glass or metal, and if the mobile phone rear cover adopts a traditional square shape, the mobile phone rear cover is single, and cannot meet the pursuit of people on fashion and personality. The plastic rear cover, the glass rear cover and the metal rear cover have various defects, wherein the plastic rear cover has serious homogenization and is easy to fade after being used for a long time, and the use attractiveness is influenced. In order to solve the above disadvantages, many manufacturers have been processing mobile phone back covers with 3D composite boards.

In order to meet the increasingly diversified requirements of consumers, the shapes and sizes of the mobile phone rear covers are diversified, the hot bending process belongs to a common process for processing 3D composite boards, the materials are slightly softened by high temperature, special shapes are pressed forcibly, and the mobile phone rear covers are cooled and shaped. However, in the existing equipment for processing the mobile phone rear cover by using the 3D composite board, the mould is adopted for pressing, and the pressing mould is an integral board, so that the control is not easy in the pressing process, and once the whole mould is damaged, the whole mould is scrapped. In addition, a set of production mold needs to be independently researched and developed and customized according to each model, the cost is extremely high for manufacturers, and the molds need to be disassembled and assembled during mutual switching, so that the damage probability of the molds is increased, and the production efficiency is reduced.

Disclosure of Invention

In order to overcome the above-mentioned not enough of prior art, the utility model provides a curved device of heat with lid behind 3D composite sheet shaping cell-phone.

The technical proposal of the utility model for solving the technical problem is that: a hot bending device for forming a mobile phone rear cover by using a 3D composite board comprises a base, wherein a lower template, a profiling insert, a forming pressure plate assembly and an upper template are sequentially arranged on the base from bottom to top, and the lower template and the upper template can be mutually folded to form a closed die cavity; the profiling insert is provided with a heating assembly and a demoulding assembly; the molding pressing plate assembly comprises a first molding pressing plate assembly matched with the flat part of the rear cover of the mobile phone and a plurality of second molding pressing plate assemblies which are respectively arranged on the periphery of the first molding pressing plate assembly and matched with the frame part of the rear cover of the mobile phone.

Preferably, the first forming press plate assembly comprises a first driving cylinder and a plane forming press plate driven by the first driving cylinder; the second forming pressing plate component comprises a second driving cylinder and a curved surface forming pressing plate driven by the second driving cylinder, and the planar forming pressing plate and the curved surface forming pressing plate can be mutually spliced and are completely matched with the rear cover of the mobile phone.

Preferably, the curved surface shaping pressing plate is detachably connected with the second driving cylinder.

Preferably, the upper die plate is provided with a plurality of first through holes, the first driving cylinder and the second driving cylinder are fixedly arranged at the upper end of the upper die plate, and piston rods of the first driving cylinder and the second driving cylinder penetrate through the first through holes and extend into the closed die cavity.

Preferably, the heating assembly comprises a heating plate arranged at the upper end of the profiling insert, an electric connection male end arranged at the lower end of the profiling insert and an electric connection female end arranged on the lower template, the heating member is electrically connected with the electric connection male end, the electric connection female end is connected with an external power supply, and the electric connection male end can be in plug fit with the electric connection female end and conducts a circuit.

Preferably, the demolding assembly comprises a demolding cylinder arranged at the lower end of the lower template and an ejector rod driven by the demolding cylinder, the lower template is provided with a second through hole, and the ejector rod penetrates through the second through hole and is fixedly connected with the profiling insert.

Preferably, the device further comprises a vacuum pump, and the vacuum pump is communicated with the closed cavity through a conduit.

Preferably, the plane shaping pressing plate and the curved surface shaping pressing plate are both made of copper.

The beneficial effects of the utility model reside in that: 1. the hot bending device for the rear cover of the mobile phone formed by the 3D composite board is of a brand new structure, and the first forming pressing board component and the second forming pressing board are cooperatively matched, so that hot bent products are better in consistency and higher in qualified rate; 2. after part of the pressing plates are damaged, the pressing plates can be independently replaced, so that the cost is saved; 3. the curved surface shaping pressing plates with different shapes and sizes can be customized in advance, and the required set of curved surface shaping pressing plates can be assembled and used by self in a detachable mode, and for the whole set of device, most parts realize universality, so that the research and development and production cost can be greatly saved; 4. the dismouting part is few, effectively promotes production efficiency, and reduces the impaired probability of accessory.

Drawings

Fig. 1 is a schematic structural view of the present invention during mold splitting.

Fig. 2 is a schematic structural view of the die assembly in hot bending of the present invention.

Fig. 3 is a schematic diagram of a 3D composite board processed into a finished product of a mobile phone rear cover.

Fig. 4 is a schematic illustration of the position distribution of the first and second molding platens.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, the hot bending device for forming the rear cover of the mobile phone by using the 3D composite board comprises a base 1, wherein a lower template 2, a profiling insert 3, a forming press plate assembly and an upper template 4 are sequentially arranged on the base 1 from bottom to top, and the lower template 2 and the upper template 4 can be mutually folded to form a closed die cavity 5; the profiling insert 3 is provided with a heating assembly and a demoulding assembly; the molding pressing plate assembly comprises a first molding pressing plate assembly matched with the flat part 18 of the mobile phone rear cover 17 and a plurality of second molding pressing plate assemblies which are respectively arranged on the periphery of the first molding pressing plate assembly and matched with the frame part 19 of the mobile phone rear cover 17. Specifically, the first forming press plate assembly comprises a first driving cylinder 6 and a plane forming press plate 7 driven by the first driving cylinder 6; the second forming pressing plate assembly comprises a second driving cylinder 8 and a curved surface forming pressing plate 9 driven by the second driving cylinder 8, and the plane forming pressing plate 7 and the curved surface forming pressing plate 9 can be mutually spliced and completely matched with the rear cover 17 of the mobile phone.

Preferably, the curved surface shaping pressing plate 9 is detachably connected with the second driving cylinder 8. In order to adapt to the production and manufacture of the rear covers 17 of different mobile phones, the curved surface shaping pressing plates 9 with different shapes and sizes can be customized in advance, and then the required group of curved surface shaping pressing plates 9 are assembled and used by oneself in a detachable mode. The detachable connection mode can be screw connection, buckle connection, strong magnetic attraction connection and the like, and is not specially limited.

The present embodiment provides a preferable arrangement of the first driving cylinder 6 and the second driving cylinder 8, which specifically includes: the upper die plate 4 is provided with a plurality of first through holes, the first driving cylinder 6 and the second driving cylinder 8 are fixedly arranged at the upper end of the upper die plate 4, and piston rods of the first driving cylinder 6 and the second driving cylinder 8 penetrate through the first through holes and extend into the closed die cavity 5.

The heating element's setting mode has a lot, and this embodiment provides an optimal scheme, and it has solved the exposed drawback of electric wire among the existing structure, realizes the circular telegram through the cooperation of connecing electric male end 10 and connecing electric female end 11, embeds the circuit, plays effectual guard action. Specifically, the heating assembly comprises a heating plate 12 arranged at the upper end of the profiling insert 3, an electric connection male end 10 arranged at the lower end of the profiling insert 3 and an electric connection female end 11 arranged on the lower template 2, the heating element is electrically connected with the electric connection male end 10, the electric connection female end 11 is connected with an external power supply, and the electric connection male end 10 can be in plug-in fit with the electric connection female end 11 and conducts a circuit.

After the hot bending, lid 17 is probably attached together with profile modeling mold insert 3 behind the cell-phone, if direct strong getting off, probably lead to warping impaired, consequently realize the back according to the atress analysis, the utility model discloses a purpose-made drawing of patterns subassembly, including setting up drawing of patterns cylinder 13 at 2 lower extremes of lower bolster wherein to and receive drawing of patterns cylinder 13 driven ejector pin 14, lower bolster 2 seted up the second through-hole, ejector pin 14 pass the second through-hole and with profile modeling mold insert 3 rigid coupling.

In order to provide a more stable and reliable hot bending environment, in the embodiment, the pressure in the closed mold cavity 5 is pumped to vacuum, so that the consistency of the hot bent product is higher, and specifically, the vacuum pump 15 is included, and the vacuum pump 15 is communicated with the closed mold cavity 5 through a conduit 16.

Preferably, the plane setting pressing plate 7 and the curved surface setting pressing plate 9 are both made of copper, and have good thermal stability so as to improve the qualification rate of products.

The utility model provides a brand-new structure with lid 17's behind 20 shaping cell-phones hot curved device of 3D composite sheet, add earlier with 3D composite sheet 20's raw materials prevent to the mold insert on man-hour, the compound die forms sealed die cavity after that, start the temperature in the heating element improves sealed die cavity, utilize the vacuum pump to take out sealed die cavity to vacuum environment simultaneously, it drives actuating cylinder 6 and second and drives actuating cylinder 8 to start first drive after the processing temperature to reachd, make plane design clamp plate 7 and curved surface design clamp plate 9 move down and conflict 3D composite sheet 20, it then can accord with the board buckling of 3D to predetermined shape to continue to move down, then divide the mould, move away plane design clamp plate 7 and curved surface design clamp plate 9 after cooling down a period at room temperature, at last lid 17 jack-ups take out behind the finished product cell-phone through drawing of patterns subassembly.

Claims (8)

1. The utility model provides a curved device of heat with lid behind 3D composite sheet shaping cell-phone, includes the base, its characterized in that: the lower template, the profiling insert, the molding pressing plate assembly and the upper template are sequentially arranged on the base from bottom to top, and the lower template and the upper template can be mutually folded to form a closed die cavity; the profiling insert is provided with a heating assembly and a demoulding assembly; the molding pressing plate assembly comprises a first molding pressing plate assembly matched with the flat part of the rear cover of the mobile phone and a plurality of second molding pressing plate assemblies which are respectively arranged on the periphery of the first molding pressing plate assembly and matched with the frame part of the rear cover of the mobile phone.

2. The hot bending device for the rear cover of the mobile phone formed by the 3D composite board according to claim 1, is characterized in that: the first forming press plate assembly comprises a first driving cylinder and a plane forming press plate driven by the first driving cylinder; the second forming pressing plate component comprises a second driving cylinder and a curved surface forming pressing plate driven by the second driving cylinder, and the planar forming pressing plate and the curved surface forming pressing plate can be mutually spliced and are completely matched with the rear cover of the mobile phone.

3. The hot bending device for the rear cover of the mobile phone formed by the 3D composite board according to claim 2, is characterized in that: the curved surface shaping pressing plate is detachably connected with the second driving cylinder.

4. The hot bending device for the rear cover of the mobile phone formed by the 3D composite board according to claim 2, is characterized in that: the upper die plate is provided with a plurality of first through holes, the first driving cylinder and the second driving cylinder are fixedly arranged at the upper end of the upper die plate, and piston rods of the first driving cylinder and the second driving cylinder penetrate through the first through holes and extend into the closed die cavity.

5. The hot bending device for the rear cover of the mobile phone formed by the 3D composite board according to claim 1, is characterized in that: the heating assembly comprises a heating plate arranged at the upper end of the profiling insert, a power connection male end arranged at the lower end of the profiling insert and a power connection female end arranged on the lower template, the heating plate is electrically connected with the power connection male end, the power connection female end is connected with an external power supply, and the power connection male end can be in plug-in fit with the power connection female end and conducts a circuit.

6. The hot bending device for the rear cover of the mobile phone formed by the 3D composite board according to claim 1, is characterized in that: the demolding assembly comprises a demolding cylinder arranged at the lower end of the lower template and an ejector rod driven by the demolding cylinder, the lower template is provided with a second through hole, and the ejector rod penetrates through the second through hole and is fixedly connected with the profiling insert.

7. The hot bending device for the rear cover of the mobile phone formed by the 3D composite board according to claim 1, is characterized in that: the vacuum pump is communicated with the closed die cavity through a guide pipe.

8. The hot bending device for the rear cover of the mobile phone formed by the 3D composite board according to claim 2, is characterized in that: the plane shaping pressing plate and the curved surface shaping pressing plate are both made of copper.

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