CN217831519U

CN217831519U - Stamping forming mould of backlight metal back plate

Info

Publication number: CN217831519U
Application number: CN202220128947.0U
Authority: CN
Inventors: 吴其滨; 洪松宇; 古帮冲
Original assignee: Kam Shing Po Hardware Shenzhen Co ltd
Current assignee: Kam Shing Po Hardware Shenzhen Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-11-18
Anticipated expiration: 2032-01-18

Abstract

The utility model discloses a stamping forming die of a metal back plate of a backlight source, which is characterized in that a spring plate is additionally arranged on an upper die, a flanging punch is arranged on the side wall of the periphery of the spring plate in a sliding way, and a first elastic part is arranged between the spring plate and an upper backing plate, so that the lower end surface of the spring plate protrudes out of the plane where the lower end surface of the flanging punch is located in a normal state; in the stamping process, the elastic block plate can be contacted with the back plate to be stamped to press the back plate, and then the four edges of the back plate are stamped by the flanging punches around the elastic block plate to complete one-step stamping forming of the back plate; simultaneously, four bights at the die holder are provided with the angle steel respectively, and the protruding reference column that is equipped with in upper end of each angle steel can be decided the backplate by four reference columns from four breachs of waiting to punch the backplate when waiting to punch the backplate and place at the die holder, avoids the backplate skew to lead to the punching press error, facilitates for the high accuracy punching press of backplate.

Description

Stamping forming die of backlight metal back plate

Technical Field

The utility model relates to a stamping die's technical field, in particular to stamping forming mould of backlight metal back plate.

Background

The backlight source back plate is one of main components of the backlight module, is used for being matched with the rubber frame to protect optical components inside the module, provides structural support for the backlight module, and can conduct heat generated by a light source out to facilitate heat dissipation of the module.

Along with the frivolousization of liquid crystal display panel, also more and more strict to the size precision requirement of metal back plate, and the back plate is thin, and hem size all around is little, and current stamping die hardly realizes carrying out hem once to four limits, leads to the size precision after the punching press to can't reach the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a stamping forming mould of backlight metal back plate aims at solving four hem one-time stamping forming of backlight backplate to guarantee its size precision.

In order to achieve the purpose, the utility model provides a stamping forming die of backlight metal backboard, including upper die and lower mould, the upper die includes cope match-plate pattern, upper padding plate and the elastic sheet that connects gradually, be equipped with first elastic component between elastic sheet and the upper padding plate, the elastic sheet lateral wall is equipped with the hem drift respectively all around, the upper end of hem drift is fixed on the upper padding plate, its body with the lateral wall sliding fit of elastic sheet, the lower terminal surface of elastic sheet under the effect of first elastic component salient in the plane that the terminal surface is located under the hem drift;

the lower die comprises a lower die base and a lower die plate which are connected in sequence, angle steel is arranged at four corners of the lower die base respectively, positioning columns are arranged at the upper ends of the angle steel in a protruding mode, and the positioning columns are clamped by four gaps of the back plate to be punched when the back plate to be punched is placed on the lower die base.

Optionally, the side walls of the circumferential sides of the elastic block plate are respectively provided with a sliding rail, the inner side wall of the flanging punch is concavely provided with a sliding groove corresponding to the sliding rail, and the sliding groove is clamped on the sliding rail.

Optionally, the slide rail is T-shaped or dovetail-shaped.

Optionally, a slot is concavely formed in the lower end face of the elastic plate, and a positioning groove is concavely formed in the outer side wall of the flanging punch.

Optionally, a stripper plate is arranged in the lower die base, and a second elastic element is arranged between the stripper plate and the lower die plate.

Optionally, the first elastic element is a rubber plug made of an elastic plastic material or a spring formed by winding metal.

According to the utility model provides a stamping forming die of backlight metal backplate, through add the apron board on last mould, slide the hem drift and set up the week side wall at the apron board, set up first elastic component between apron board and upper padding plate, make the lower terminal surface of apron board stand out under the normal state in the plane that the lower terminal surface of hem drift is located; in the stamping process, the elastic block plate can be contacted with the back plate to be stamped to press the back plate, and then the four edges of the back plate are stamped by the flanging punches around the elastic block plate to complete one-step stamping forming of the back plate; simultaneously, four bights at the die holder are provided with the angle steel respectively, and the protruding reference column that is equipped with in upper end of each angle steel can be fixed the backplate by four reference columns from four breachs of waiting to punch the backplate when waiting to punch the backplate and placing at the die holder, avoids the backplate skew to lead to the punching press error, facilitates for the high accuracy punching press of backplate.

Compared with the prior art, the beneficial effects of the utility model reside in that: can realize four limits one shot forming to the backlight backplate, and can avoid the error that the backplate skew leads to for size precision after the punching press can reach the requirement of backlight module.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a cross-sectional view of an embodiment of the present invention;

fig. 2 is a top view of a lower mold according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of another embodiment of the present invention;

FIG. 4 is a schematic diagram of a conventional backlight metal backplate before stamping;

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.

The utility model provides a stamping forming mould of backlight metal back plate.

Referring to fig. 1 to 2, fig. 1 is a cross-sectional view of an embodiment of the present invention, and fig. 2 is a plan view of a lower mold in an embodiment of the present invention.

As shown in fig. 1-2, in the embodiment of the present invention, the punch forming mold includes an upper mold and a lower mold, the upper mold includes an upper mold plate 100, an upper backing plate 200, and a spring plate 300 connected in sequence, a first elastic member 310 is disposed between the spring plate 300 and the upper backing plate 200, the side walls of the spring plate 300 are respectively provided with a hemming punch 210, the upper end of the hemming punch 210 is fixed on the upper backing plate 200, the body of the hemming punch 210 is in sliding fit with the side wall of the spring plate 300, and the lower end surface of the spring plate 300 protrudes out of the plane where the lower end surface of the hemming punch 210 is located under the effect of the first elastic member 310. The lower die comprises a lower die base 500 and a lower template 400 which are connected in sequence, four corners of the lower die base 500 are respectively provided with angle steel 510, and the upper end of the angle steel 510 is convexly provided with a positioning column 510a.

In the present embodiment, in order to realize the sliding engagement between the hemming punch 210 and the elastic block plate 300, the side walls of the periphery of the elastic block plate 300 are respectively provided with a slide rail 320, and the section of the slide rail 320 is T-shaped or dovetail-shaped; the inner side wall of the hemming punch 210 is concavely provided with a sliding groove corresponding to the sliding rail 320, and the sliding groove is clamped on the sliding rail 320.

In this embodiment, a stripper plate 600 is disposed in the lower die holder 500, and a second elastic member 610 is disposed between the stripper plate 600 and the lower die plate.

Specifically, the first elastic member 310 and the second elastic member 610 may be made of elastic plastic material to form a rubber plug or a spring formed by winding metal.

As shown in fig. 4, a conventional backlight metal back panel 700 to be punched is provided, in which the upper and lower sides of the back panel 700 are respectively provided with a long folded edge 700a, the left and right sides thereof are respectively provided with a short folded edge 700b, and a gap 700c is formed at the junction of the long folded edge and the short folded edge.

The utility model provides a stamping forming mould's theory of operation is:

before stamping, the back plate 700 is placed on the lower die holder 500, and the back plate 700 is pre-fixed through the positioning columns 510a of the angle steels 510, so that the back plate 700 is prevented from deviating;

during punching, the upper die plate 100 is driven by the press to move downwards, the elastic plate 300 is firstly contacted with the back plate 700, the back plate 700 is tightly pressed on the lower die holder 500 before punching, and then the upper die plate 100 simultaneously compresses the first elastic element 310 and the second elastic element 610, so that the flanging punch 210 extends out of the elastic plate 300 to punch the flanging of the back plate 700, and the stripper plate 600 is pressed in the lower die holder 500.

After the punching is completed, the upper die plate 100 is reset, and the second elastic member 610 automatically ejects the stripper plate 600 from the lower die holder 500 after the pressure of the ejector plate 300 is lost, so as to be taken away by a robot or a worker.

In this embodiment, the lower end surface of the spring block plate 300 is concavely provided with a slot 300a, and the outer side wall of the hemming punch 210 is concavely provided with a positioning groove 210a. As shown in fig. 3, for the backing plates 700 with different sizes, pressing blocks 330 with different sizes identical to those of the backing plates 700 can be inserted into the positioning grooves 210a, the auxiliary punch 211 is arranged on the hemming punch 210, and the auxiliary punch 211 is positioned by the positioning grooves 210a, so that the hemming die is compatible with the punching and hemming of the backing plates with different sizes.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The punch forming die for the backlight metal back plate comprises an upper die and a lower die, and is characterized in that the upper die comprises an upper die plate, an upper backing plate and an elastic plate which are sequentially connected, a first elastic element is arranged between the elastic plate and the upper backing plate, edge folding punches are respectively arranged on the peripheral side walls of the elastic plate, the upper end of each edge folding punch is fixed on the upper backing plate, the body of each edge folding punch is in sliding fit with the side wall of the corresponding elastic plate, and the lower end face of the elastic plate protrudes out of the plane where the lower end face of the edge folding punch is located under the action of the first elastic element;

2. The punch forming die for the backlight metal back plate as claimed in claim 1, wherein slide rails are respectively disposed on the side walls of the elastic plate, slide grooves corresponding to the slide rails are concavely disposed on the side walls of the flanging punch, and the slide grooves are clamped on the slide rails.

3. The punch forming die for the backlight metal back plate as claimed in claim 2, wherein the slide rail is T-shaped or dovetail-shaped.

4. The punch forming die for the backlight metal back plate as claimed in claim 1, wherein the lower end surface of the elastic plate is concavely provided with a slot, and the outer side wall of the flanging punch is concavely provided with a positioning groove.

5. The punch forming die for the backlight metal back plate as claimed in claim 1, wherein a stripper plate is disposed in the lower die base, and a second elastic member is disposed between the stripper plate and the lower die plate.

6. The stamping and forming die for the metal back plate of the backlight source as claimed in any one of claims 1 to 5, wherein the first elastic member is a rubber plug made of elastic plastic material or a spring formed by rolling metal.