CN211542350U

CN211542350U - IML forming die with reverse edge covering

Info

Publication number: CN211542350U
Application number: CN201922289725.8U
Authority: CN
Inventors: 邓香华; 王小浒; 王明乙
Original assignee: Fujian Shishi Tongda Electrical Appliance Co Ltd
Current assignee: Fujian Shishi Tongda Electrical Appliance Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-22
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses an IML forming die with reverse edge covering, which comprises an upper die plate and a lower die plate, wherein a lower die core is embedded in a forming cavity in a mode of vertical translation, and the bottom of the forming cavity is provided with an elastic device; the lower end of the upper mold core is respectively provided with an indentation groove at the four outer side walls, two adjacent indentation grooves are communicated, the indentation grooves are connected with the upper mold core at the positions pressed into the molding cavity up and down, the top surface of the lower mold plate is respectively provided with a sliding block matched with the indentation grooves at the positions corresponding to the four indentation grooves, the sliding blocks are movably arranged on the lower mold plate in a reciprocating translation mode towards the molding cavity, and the lower mold plate is correspondingly provided with a translation driving device for controlling the sliding block to translate corresponding to each sliding block. This neotype IML forming die, it enables the diaphragm after the shaping and goes out anti hem structure at the outer integrated into one piece of shaping cavity, need not to operate in the shaping cavity, and the hem effect is good, and good efficiency is high.

Description

IML forming die with reverse edge covering

Technical Field

The utility model relates to a cell-phone accessory injection mold, in particular to IML forming die with anti-borduring.

Background

The existing face shells of electronic products (such as air conditioner panels, washing machine panels, mobile phone back shells and the like) mostly adopt IML film-coated products, the film-coated edges of the existing IML film-coated products are exposed and are not attractive, and the requirement for edge-coating is higher and higher along with the appearance, so that the IML film-coated products are required to be provided with product bottoms and be folded reversely. The existing process is to reversely push the diaphragm through a shovel machine structure of a forming die, but the process is influenced by a reverse pushing stroke, the reverse edge wrapping effect is always poor, the folding angle of the diaphragm is larger, and the good efficiency is low.

Accordingly, the present inventors have made extensive studies on the above problems, and as a result, the present invention has been made.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a turn over bordure effect is good, and convenient operation and good efficient have and turn over bordure IML forming die.

In order to achieve the above object, the solution of the present invention is as follows:

an IML forming die with a reverse edge covering function comprises an upper die plate and a lower die plate, wherein a forming cavity is formed in the lower surface of the lower die plate, a lower die core is arranged at the bottom of the forming cavity in an upward protruding mode, an upper die core for pressing a forming area of a diaphragm into the forming cavity to form is arranged on the bottom surface of the upper die plate, and a heating device for heating the diaphragm is arranged on the lower die plate; the lower mold core is embedded in the molding cavity in a mode of being capable of moving up and down, and the bottom of the molding cavity is provided with an elastic device which supports the lower mold core and generates restoring force along with the downward movement of the lower mold core; the lower end of the upper mold core is provided with press-in grooves at four outer side walls respectively in a concave mode, two adjacent press-in grooves are communicated with each other, the press-in grooves are connected with the upper mold core in the press-in forming cavity up and down, sliders matched with the press-in grooves are respectively and correspondingly arranged at the positions, corresponding to the four press-in grooves, of the top surface of the lower mold plate, the sliders are movably arranged on the lower mold plate in a reciprocating translation mode towards the direction of the forming cavity, and translation driving devices for controlling the sliders to translate are correspondingly arranged at the positions, corresponding to the sliders, of the lower mold plate.

The translation driving device is an oil cylinder, a cylinder body of the oil cylinder is fixed on the lower template, and the end part of the free end of a piston rod of the oil cylinder is fixedly matched with the sliding block.

A hydraulic press for driving the upper template to move up and down is arranged above the upper template, a trigger switch connected with an ascending signal of the hydraulic press in series is arranged on the top surface of the lower template, and the sliding block is positioned between the trigger switch and the forming cavity.

The trigger switch is a travel switch, the top surface of the lower template is arranged beside a piston rod of the oil cylinder and is provided with a mounting seat between the sliding block and a cylinder body of the oil cylinder, the travel switch is mounted on the mounting seat, and the control end of the travel switch is positioned on one surface of the mounting seat facing the sliding block.

The four corners of the bottom surface of the upper template are respectively extended downwards to form guide columns, and the top surface of the lower template is correspondingly provided with positioning holes matched with the guide columns one by one at the four guide columns.

The elastic device is a spring which is fixed and erected in the forming cavity.

After the technical scheme is adopted, the utility model discloses an IML forming die with anti-bordure, when using, place the diaphragm on the lower die plate top surface tiling, start heating device, the diaphragm is heated, after the diaphragm heats and softens, the upper die plate moves down and presses the diaphragm in the shaping cavity of lower bolster that shaping cavity corresponds in, cooperation upper die core and lower die core make the diaphragm in shaping diaphragm intracavity primary forming, the recess of impressing at this moment just is in the accent top of shaping cavity, and link up the cooperation each other, two relative two sliders of wherein setting up in four sliders after the shaping translate respectively by the drive of translation drive arrangement in opposite directions with the diaphragm lie in the outer position of shaping cavity impress in the recess, make the both sides limit of diaphragm form the hem conversely, two sliders afterwards move back and back, the roll-off shaping cavity is outdoor, two sliders of setting up in addition are pressed in the recess with the both sides limit of diaphragm in addition relatively translation respectively by the drive of translation drive arrangement, the other two sides of the diaphragm also form reverse-folded edges, so that the four sides of the diaphragm are provided with the reverse-folded edges. Compared with the prior art, this neotype IML forming die, it enables the diaphragm after the shaping and goes out anti hem structure at the outer integrated into one piece of shaping cavity, need not to operate in the shaping cavity, and the hem effect is good, and good efficiency is high.

Drawings

Fig. 1 is a perspective view of the present invention (three oil cylinders are omitted);

FIG. 2 is a perspective view of the upper shuttering in the present embodiment;

fig. 3 is a perspective view of the middle and lower templates (three oil cylinders are omitted).

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

The utility model discloses a IML forming die with anti-bordure, as shown in fig. 1-3, including cope match-plate pattern 1 and lower bolster 2, lower bolster 2's top surface is recessed to have shaping cavity 21, shaping cavity 21 is square cavity, the chamber end of shaping cavity 21 is equipped with lower mold core 211 to the epirelief, cope match-plate pattern 1's bottom surface has the shaping region with the diaphragm and impresses shaping upper die core 11 in the shaping cavity, upper die core 11 is corresponding to be square piece, upper die core 11's lower extreme tip has and treats the identical shaping structure of tectorial membrane finished product shape (not drawn in the picture), the last heating device who heats the diaphragm that has of lower bolster 2, what this heating device adopted is the well-known technology, be the structure that current lower bolster 2 was commonly used, bury electric heating pipe in lower bolster 2 promptly, this scheme is the well-known technology of IML forming die now, no longer give unnecessary details here.

A hydraulic machine (not shown in the figure) for driving the upper template 1 to move up and down is arranged above the upper template 1, and the hydraulic machine is used for driving the upper template 1 to move up and down; the lower mold core 211 is embedded in the molding cavity 21 in a manner of being capable of moving up and down, and an elastic device (not shown in the figure) which supports the lower mold core 211 and generates restoring force along with the downward movement of the lower mold core is arranged at the bottom of the molding cavity 21; preferably, the elastic device is a spring, the spring is fixed and erected on the cavity bottom of the forming cavity, when the diaphragm forming die is used, the diaphragm is flatly placed on the top surface of the lower die plate 2, a local part of the diaphragm falls into the forming cavity 21, then the upper die plate 1 moves downwards, the diaphragm is pressed into the forming cavity 21 by the upper die core 11, the diaphragm and the lower die core 211 are connected with each other along with the pressing of the upper die core 11, the lower die core 211 moves downwards due to the downward movement of the upper die core 11, the diaphragm is formed and coated outside the lower end of the upper die core by the upper die core and the lower die core in a clamping fit forming structure, and the edge of the diaphragm is located.

Four outer side walls of the lower end of the upper mold core 11 are respectively concavely provided with press-in grooves 111, namely, the front side wall, the rear side wall, the left side wall and the right side wall of the upper mold core are respectively concavely provided with strip-shaped grooves extending in the side length direction of the mold core, two adjacent press-in grooves 111 are communicated, namely, the four press-in grooves 111 are communicated, and the press-in grooves 111 and the parts of the upper mold core pressed into the molding cavity are arranged in a vertical connection mode, namely, when the lower end of the upper mold core 11 extends into the molding cavity and cannot move downwards again, the press-in grooves 111 are just positioned above the opening of the molding cavity 21; the top surface of the lower template 2 is corresponding to the slide block 3 matched with the four pressing-in grooves 111 one by one respectively, each slide block 3 is correspondingly a strip-shaped block completely matched with the pressing-in groove 111, the slide block 3 is movably placed on the lower template 2 in a reciprocating translation mode towards the direction of the forming cavity, the lower template 2 is correspondingly provided with a translation driving device for controlling the slide block to translate corresponding to each slide block 3, the translation driving device is an oil cylinder 4, the cylinder body of the oil cylinder 4 is fixed on the lower template 2, the free end part of the piston rod of the oil cylinder 4 is fixedly matched with the slide block 3, and the oil cylinder 4 can drive the slide block 3 to do reciprocating translation movement when in work.

The utility model discloses a IML forming die with anti-bordure, during the use, place the diaphragm tiling on 2 top surfaces of lower bolster, start heating device, the diaphragm is heated, the diaphragm heats and softens the back, the hydraulic press starts, upper die plate 1 moves down, it is located the corresponding position of shaping cavity with the diaphragm and impresses in the shaping cavity 21 of lower bolster 2 downwards to go up mold core 11, the lower extreme tip of going up mold core 11 can be along with moving down of upper die plate and contact with lower mold core 211, the diaphragm presss from both sides tightly between last mold core and lower mold core, go up the continuation of mold core and move down, the spring of lower mold core below is compressed, produce ascending top and hold the power, utilize the clamp of last mold core and lower mold core to make the diaphragm preliminary shaping in the shaping cavity, when last mold core 11 can't move down, the recess 111 of impressing just falls in shaping cavity 21's mouth top, both link up the cooperation each other, at this moment, the shaping cavity 21 left and right sides's slider 3 is shifted in opposite directions The edges are pressed into the press-in groove 111, so that the left and right sides of the diaphragm form reverse folding edges, then the left and right sliders move back and forth and slide out of the forming cavity, the front and rear sliders 3 move in opposite directions to press the front and rear sides of the diaphragm into the press-in groove 111, so that the front and rear sides of the diaphragm also form reverse folding edges, and the left and right sides and the front and rear sides of the diaphragm are respectively reversely folded, so that the four corners of the diaphragm cannot be arched; the four sides of the membrane are provided with reverse folding edges. Compared with the prior art, the IML forming die of the utility model can integrally form a reverse flanging structure on the formed diaphragm outside the forming cavity, without operation in the forming cavity, and the stroke of the oil cylinder is easy to be obvious and can be accurately controlled, thereby greatly improving the flanging effect, not causing the bending superposition area to be arched, having high efficiency, and simultaneously, the whole structure is simple and easy, the operation is convenient, and the processing and the manufacture are easy; moreover, the device is suitable for forming the reverse-folded edge and the non-reverse-folded edge when in application, and is flexible to use and free to control.

In the novel hydraulic press, the top surface of the lower template 2 is provided with a trigger switch connected with an ascending signal of the hydraulic press in series, the slide block 3 is arranged between the trigger switch and the forming cavity, preferably, the trigger switch is a travel switch (not shown in the figure), the top surface of the lower template 2 is provided with a mounting seat 5 arranged between the slide block and a cylinder body of the oil cylinder beside a piston rod of the oil cylinder, the travel switch is arranged on the mounting seat, an operation end of the travel switch is arranged on one surface of the mounting seat facing the slide block, namely the mounting seat is a shell, the travel switch is arranged in the mounting seat, the operation end of the travel switch faces the slide block, the travel switch can also be directly arranged on the lower module 2, an output end of the travel switch is connected with an ascending signal control end of the hydraulic press in series, the matching mode of the travel switch and the hydraulic press is common knowledge of the existing circuit, namely, one travel, such an electric control method is well known and will not be described herein; during the application, when slider 3 was translated to 4 directions on the hydro-cylinder, slider 3 touched travel switch and is pressing travel switch's control end when, the return circuit of the rising signal of hydraulic press switches on, and the hydraulic press just can rise, like this, avoids the hydraulic press to rise to control not accurate and with slider 3 collision mutually and damage the problem of slider 3, further guarantees safe in utilizationly.

This is novel, the bottom surface four corners department of cope match-plate pattern 1 downwardly extending respectively have guide post 12, the top surface of lower bolster 2 is located four guide post 12 one-to-ones and is recessed have with guide post matched with locating hole 22, the cooperation that utilizes guide post and locating hole can play the guide effect to the oscilaltion of cope match-plate pattern 1, further protects fashioned stability.

The above embodiments and drawings do not limit the shape of the method and the fixture of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. An IML forming die with a reverse edge covering function comprises an upper die plate and a lower die plate, wherein a forming cavity is formed in the lower surface of the lower die plate, a lower die core is arranged at the bottom of the forming cavity in an upward protruding mode, an upper die core for pressing a forming area of a diaphragm into the forming cavity to form is arranged on the bottom surface of the upper die plate, and a heating device for heating the diaphragm is arranged on the lower die plate; the lower mold core is embedded in the molding cavity in a mode of being capable of moving up and down, and the bottom of the molding cavity is provided with an elastic device which supports the lower mold core and generates restoring force along with the downward movement of the lower mold core; the lower end of the upper mold core is provided with press-in grooves at four outer side walls respectively in a concave mode, two adjacent press-in grooves are communicated with each other, the press-in grooves are connected with the upper mold core in the press-in forming cavity up and down, sliders matched with the press-in grooves are respectively and correspondingly arranged at the positions, corresponding to the four press-in grooves, of the top surface of the lower mold plate, the sliders are movably arranged on the lower mold plate in a reciprocating translation mode towards the direction of the forming cavity, and translation driving devices for controlling the sliders to translate are correspondingly arranged at the positions, corresponding to the sliders, of the lower mold plate.

2. The IML forming mold with reverse hemmed edge of claim 1, wherein: the translation driving device is an oil cylinder, a cylinder body of the oil cylinder is fixed on the lower template, and the end part of the free end of a piston rod of the oil cylinder is fixedly matched with the sliding block.

3. An IML forming mold with reverse hemming according to claim 2 wherein: a hydraulic press for driving the upper template to move up and down is arranged above the upper template, a trigger switch connected with an ascending signal of the hydraulic press in series is arranged on the top surface of the lower template, and the sliding block is positioned between the trigger switch and the forming cavity.

4. An IML forming mold with reverse hemming according to claim 3 wherein: the trigger switch is a travel switch, the top surface of the lower template is arranged beside a piston rod of the oil cylinder and is provided with a mounting seat between the sliding block and a cylinder body of the oil cylinder, the travel switch is mounted on the mounting seat, and the control end of the travel switch is positioned on one surface of the mounting seat facing the sliding block.

5. The IML forming mold with reverse hemmed edge of claim 1, wherein: the four corners of the bottom surface of the upper template are respectively extended downwards to form guide columns, and the top surface of the lower template is correspondingly provided with positioning holes matched with the guide columns one by one at the four guide columns.

6. The IML forming mold with reverse hemmed edge of claim 1, wherein: the elastic device is a spring which is fixed and erected in the forming cavity.