CN213728783U

CN213728783U - Continuous high-speed forming equipment for extremely-thin aluminum sheet convex hull

Info

Publication number: CN213728783U
Application number: CN202022233774.2U
Authority: CN
Inventors: 莫舒润; 郝鲁冲; 吴智立; 王鹏; 张银泉; 郝鲁宁
Original assignee: Kunshan Liuchun Intelligent Technology Co ltd
Current assignee: Kunshan Liuchun Intelligent Technology Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-07-20
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a continuous high-speed forming device of an extremely-thin aluminum sheet convex hull, which comprises a hydraulic cylinder, a frame and a mould, wherein the mould is fixed in the frame, and the hydraulic cylinder drives an upper mould of the mould to lift; the upper die of the die comprises a fixed plate, a pressing plate and a convex hull punch, wherein the convex hull punch is arranged in the fixed plate, the forming end is inserted into the pressing plate, and the fixed plate and the pressing plate are fixedly connected through a first spring and an equal-height screw; the lower die of the die comprises a lower die plate, a lower backing plate and a convex hull insert, the convex hull insert is fixed in the lower die plate, a limiting ejector rod is arranged in the convex hull insert, and the bottom end of the limiting ejector rod is connected with the lower backing plate through a second spring; the pressing plate is internally provided with an air passage connected with an external air source, and the bottom surface of the pressing plate is provided with a plurality of air holes communicated with the air passage. After the mold is opened, clean air with certain pressure is injected into the pressing plate, and downward pressure is given to the material belt, so that the material belt is separated from the pressing plate in time, the material belt is prevented from falling off after being taken up by the pressing plate, and the molding quality of the convex closure is improved.

Description

Continuous high-speed forming equipment for extremely-thin aluminum sheet convex hull

Technical Field

The utility model belongs to the technical field of electronic product production, especially, relate to continuous high-speed former of extremely thin aluminum sheet convex closure.

Background

The thickness of the convex hull aluminum piece used in the electronic product is about 1mm, and the convex hull aluminum piece is extremely easy to deform in the punch forming process, and mainly caused by the fact that the aluminum sheet is upwards taken by the pressing plate and then falls off. Therefore, improvement of the existing forming equipment is needed to improve the yield of the aluminum sheet convex hull.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provides the forming equipment of the extremely thin aluminum sheet convex hull with stable production quality and high qualification rate of finished pieces.

In order to achieve the above purpose, the utility model provides a technical scheme as follows:

the continuous high-speed forming equipment for the ultrathin aluminum sheet convex hull comprises a hydraulic cylinder, a rack and a die, wherein the die is fixed in the rack, and the hydraulic cylinder drives an upper die of the die to lift; the upper die of the die comprises a fixed plate, a pressing plate and a convex hull punch, wherein the convex hull punch is arranged in the fixed plate, a forming end is inserted into the pressing plate, and the fixed plate is fixedly connected with the pressing plate through a first spring and an equal-height screw; the lower die of the die comprises a lower die plate, a lower backing plate and a convex hull insert, the convex hull insert is fixed in the lower die plate, a limiting ejector rod is arranged in the convex hull insert, and the bottom end of the limiting ejector rod is connected with the lower backing plate through a second spring; the pressing plate is internally provided with an air passage connected with an external air source, and the bottom surface of the pressing plate is provided with a plurality of air holes communicated with the air passage.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. after the mold is opened, clean air with certain pressure is injected into the pressing plate, and downward pressure is given to the material belt, so that the material belt is separated from the pressing plate in time, the material belt is prevented from falling off after being lifted by the pressing plate, and the molding quality of the convex hull is improved;

2. the limiting ejector rod is arranged in the convex closure insert, the top surface of the ejector rod is flush with the inner molding bottom surface of the convex closure insert in a die assembly state, the convex closure punch moves upwards in a die opening state, the force applied to the limiting ejector rod disappears, and the limiting ejector rod automatically jacks the material belt upwards in the moment of ejecting the material by the ejector pin, so that the deformation of the convex closure is further avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a cross-sectional view of a mold in a closed state;

FIG. 2 is a sectional view of the mold in the open state;

fig. 3 is a cross-sectional view of the pulling mechanism.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example one

The continuous high-speed forming equipment for the ultrathin aluminum sheet convex hull comprises a hydraulic cylinder, a rack and a die, wherein the die is fixed in the rack, and the hydraulic cylinder drives an upper die of the die to lift. The two sides of the forming equipment are provided with a material belt unreeling machine and a material belt reeling machine, and the two machines act in a synergistic manner to control the rapid movement of the material belt in the die.

The die shown in fig. 1 and 2 comprises an upper die and a lower die, wherein the upper die comprises a fixing plate 10, a pressing plate 20 and a convex hull punch 30, the convex hull punch 30 is arranged in the fixing plate 10, a forming end is inserted into the pressing plate 20, and the fixing plate 10 is fixedly connected with the pressing plate 20 through a first spring 40 and a contour screw; the lower die of the die comprises a lower die plate 50, a lower backing plate 60 and a convex hull insert 70, the convex hull insert 70 is fixed in the lower die plate 50, a limiting ejector rod 80 is arranged in the convex hull insert 70, and the bottom end of the limiting ejector rod 80 is connected with the lower backing plate 60 through a second spring 90. In the die-closing state, the top surface of the ejector rod is flush with the inner molding bottom surface of the convex hull insert 70; in the mold opening state, the convex hull punch 30 moves upwards, the force applied to the limiting ejector rod 80 disappears, and the limiting ejector rod 80 automatically jacks up the material belt at the moment of ejecting the material by the ejector pin, so that the convex hull is prevented from deforming.

Be provided with the air flue 21 of being connected with outside air supply in the clamp plate 20, the bottom surface of clamp plate 20 is provided with the gas pocket 22 of several and air flue intercommunication, and after the mould die sinking, to pouring into certain pressurized clean air into clamp plate 20, give the decurrent pressure in material area for the material area is in time separated with clamp plate 20, has avoided the material area to be taken by clamp plate 20 and has been fallen down again, has improved the shaping quality of convex closure.

Further, a shaping punch 100 is arranged in the upper die, and a shaping insert 110 is arranged in the lower die; the shaping punch is arranged in the fixing plate 10, the shaping insert is arranged in the lower template 50, and the limiting ejector rod 80 is arranged in the shaping insert. After the convex hull is formed, the shaping punch head carries out micro-shaping on the convex hull immediately, the forming quality of the convex hull is improved, and two space pitches are arranged between the shaping punch head and the convex hull punch head 30 because the size of the convex hull in the electronic product is smaller.

Example two

The present embodiment is based on the first embodiment.

The moving of the material belt in the die depends on an unreeling machine and a reeling machine on two sides of the device, and although the existing reeling and unreeling machines can control the material belt to move step by step, the precision cannot reach the precision required by electronic-grade products.

In the embodiment, the pulling mechanism for moving the aluminum sheet step by step is arranged outside the die so as to solve the technical problem. Referring to fig. 3, the material pulling mechanism includes a material pulling plate 121, a cylinder 122 and a slide rail 123, the slide rail is arranged along the material belt direction, the material pulling plate is connected to the top of the slide rail in a sliding manner, and the cylinder drives the material pulling plate to move along the slide rail; a pneumatic positioning needle 124 is arranged in the material pulling plate. After the material belt is pulled by the winding machine to move, the pneumatic positioning needle extends out of and is inserted into a positioning hole prefabricated in the material belt, then the material pulling plate is driven by the air cylinder to move by one step pitch, and the material belt is pulled by the pneumatic positioning needle to move backwards by one step pitch.

The strength of the thin aluminum plate is poor, the pneumatic positioning needle may draw the material belt to deform, in order to prevent the technical problem, the supporting plate 125 is disposed above the material pulling plate, and the supporting plate and the material pulling plate are connected through the second spring 126. The layer board corresponds protruding closure department and is provided with and keeps away the position, and the location end of pneumatic positioning needle passes the layer board and just in time inserts in the locating hole in material area, and at the step-by-step removal in-process in material area, on the unsteady layer board of elasticity is arranged all the time in the material area, so alright avoid the material area unsettled, prevent that the material area is out of shape.

The surface of the aluminum plate is easy to scratch, and the polytetrafluoroethylene coating with low friction coefficient is arranged on the surface of the supporting plate, so that the aluminum plate can be scratched on the surface, and the appearance quality of the convex hull is improved.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The continuous high-speed forming equipment for the ultrathin aluminum sheet convex hull is characterized by comprising a hydraulic cylinder, a rack and a die, wherein the die is fixed in the rack, and the hydraulic cylinder drives an upper die of the die to lift; the upper die of the die comprises a fixed plate, a pressing plate and a convex hull punch, wherein the convex hull punch is arranged in the fixed plate, a forming end is inserted into the pressing plate, and the fixed plate is fixedly connected with the pressing plate through a first spring and an equal-height screw; the lower die of the die comprises a lower die plate, a lower backing plate and a convex hull insert, the convex hull insert is fixed in the lower die plate, a limiting ejector rod is arranged in the convex hull insert, and the bottom end of the limiting ejector rod is connected with the lower backing plate through a second spring; the pressing plate is internally provided with an air passage connected with an external air source, and the bottom surface of the pressing plate is provided with a plurality of air holes communicated with the air passage.

2. The continuous high-speed forming device of the extremely thin aluminum sheet convex hull according to claim 1, wherein the upper die is provided with a shaping punch and the lower die is provided with a shaping insert; the shaping punch is arranged in the fixing plate, and the shaping insert is arranged in the lower template.

3. The continuous high-speed forming device of the extremely thin aluminum sheet convex hull according to claim 2, wherein the shaping insert is provided with the limiting ejector rod.

4. The continuous high-speed molding equipment for the extremely thin aluminum sheet convex hull according to claim 1, characterized in that a pulling mechanism for moving the aluminum sheet step by step is arranged outside the mold.

5. The continuous high-speed forming device for the extremely-thin aluminum sheet convex hull as claimed in claim 4, wherein the pulling mechanism comprises a pulling plate, a cylinder and a slide rail, the slide rail is arranged along the direction of the material belt, the pulling plate is slidably connected to the top of the slide rail, and the cylinder drives the pulling plate to move along the slide rail; and a pneumatic positioning needle is arranged in the material pulling plate.

6. The continuous high-speed molding equipment for the extremely-thin aluminum sheet convex hulls according to claim 5, wherein a supporting plate is arranged above the pulling plate, and the supporting plate is connected with the pulling plate through a second spring; the positioning end of the pneumatic positioning needle penetrates through the supporting plate.

7. The continuous high-speed forming equipment for the extremely thin aluminum sheet convex hull according to claim 6, wherein the surface of the supporting plate is provided with a polytetrafluoroethylene coating.