CN216729146U

CN216729146U - Buckle position forced-disengaging structure of shielding cover body

Info

Publication number: CN216729146U
Application number: CN202220262025.9U
Authority: CN
Inventors: 莫辉; 蔡国江
Original assignee: Dongguan Zhuoyi Jia Hardware Manufacturing Co ltd
Current assignee: Dongguan Zhuoyi Jia Hardware Manufacturing Co ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-06-14
Anticipated expiration: 2032-02-09

Abstract

The utility model discloses a buckling position forced-releasing structure of a shielding cover body, which is characterized in that a vacuum suction plate is arranged on an elastic seat of a lower die, an air channel plate which is used for communicating all the vacuum suction holes on the vacuum suction plate is arranged, a first air channel communicating block which is communicated with the air channel plate is arranged on the elastic seat, a second air passage communicating block corresponding to the first air passage communicating block is arranged at the bottom of the lower template cavity of the lower die, the first air passage communicating block is communicated with the second air passage communicating block during stamping and bending, thereby forming an air passage channel through the second air passage communicating block, the first air passage communicating block and the air passage plate, guiding the external negative pressure to the vacuum suction plate, thereby bend the completion back at the punching press and adsorb the shield cover lid on the elastic seat for the terrace die of going up the mould can force to deviate from the knot position of shield cover lid when the die sinking resets, removes the loaded down with trivial details of artifical drawing of patterns from, facilitates for the full automatic production of shield cover lid.

Description

Buckle position forced-disengaging structure of shielding cover body

Technical Field

The utility model relates to the technical field of stamping dies, in particular to a buckling position forced-releasing structure of a shielding cover body.

Background

The electromagnetic interference problem encountered in the use of electronic products not only interferes with the normal use of the electronic products, but also has adverse effects on the surrounding environment, so that a shielding case is usually disposed on the components of the PCB of the electronic products. At present, a shielding cover adopted by a PCB (printed circuit board) is of a single-piece type and a double-piece type, the double-piece shielding cover consists of a frame body and a cover body, the frame body is welded on a circuit substrate, and the cover body is buckled on the frame body through buckling positions.

As shown in fig. 1, the peripheral side walls of the cover body of the shielding case are provided with buckling positions bent towards the center of the cover body, and when the cover body is buckled on the male die after stamping is completed, the cover body needs to be manually pulled off from the male die with strong force and then taken away, which is not favorable for the requirement of full-automatic production.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a buckling position forced-releasing structure of a shielding cover body, which aims to realize one-step forming of a folded edge and a buckling position and improve the production efficiency of a shielding cover.

In order to achieve the purpose, the buckling position forced releasing structure of the shielding cover body is applied to a lower die of a bending forming device of the shielding cover body, and the lower die comprises a lower die plate and an elastic seat arranged in a containing cavity of the lower die plate; the buckling position forced-releasing structure comprises a vacuum suction plate and an air channel plate, wherein the vacuum suction plate is arranged on the elastic seat, the air channel plate is provided with a plurality of concentric U-shaped air channels, and the sections of the U-shaped air channels are U-shaped and are communicated with vacuum suction holes of the vacuum suction plate;

the elastic seat is provided with a first air passage communicating block communicated with the air outlet end of the U-shaped air passage, the bottom of the accommodating cavity of the lower template is provided with a second air passage communicating block corresponding to the first air passage communicating block, and the first air passage communicating block and the second air passage communicating block form a communicating relation when the elastic seat is pressed into the bottom of the accommodating cavity of the lower template.

Optionally, the bottom of the first air passage communicating block is provided with a butt joint groove, and the butt joint groove is communicated with the air outlet end of each first air passage in the first air passage communicating block;

the top of the second air passage communicating block is provided with a protruding part, the air inlet end of the second air passage on the second air passage communicating block is exposed outwards from the protruding part, and when the butt joint groove is pressed in the protruding part, the first air passage and the second air passage form a communicating relation.

Optionally, a vacuum joint is arranged in the lower template, and the vacuum joint is connected with the second air path communicating block and communicated with an external vacuum generating device through an air pipe.

According to the buckling position forced releasing structure of the shielding cover body provided by the utility model, the vacuum suction plate is arranged on the elastic seat of the lower die, an air channel plate which is used for communicating all the vacuum suction holes on the vacuum suction plate is arranged, a first air channel communicating block which is communicated with the air channel plate is arranged on the elastic seat, a second air passage communicating block corresponding to the first air passage communicating block is arranged at the bottom of the lower template cavity of the lower die, the first air passage communicating block is communicated with the second air passage communicating block during stamping and bending, thereby forming an air passage channel through the second air passage communicating block, the first air passage communicating block and the air passage plate, guiding the external negative pressure to the vacuum suction plate, thereby bend the completion back at the punching press and adsorb the shield cover lid on the elastic seat for the terrace die of going up the mould can force to deviate from the knot position of shield cover lid when the die sinking resets, removes the loaded down with trivial details of artifical drawing of patterns from, facilitates for the full automatic production of shield cover lid.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 schematic structural view of a shield cover body;

FIG. 2 is a schematic structural diagram of a bending apparatus according to an embodiment of the present invention in an open mold state;

FIG. 3 is a schematic structural view of a vacuum suction plate in an embodiment of the bending apparatus according to the present invention;

FIG. 4 is a schematic structural diagram of a gas circuit board in an embodiment of the bending apparatus according to the present invention;

FIG. 5 is a schematic structural diagram of a bending apparatus according to an embodiment of the present invention in a mold clamping state;

FIG. 6 is a partial enlarged view of the portion A in FIG. 5;

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

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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

The utility model provides a bending forming device which is used for stamping a shielding cover body and can enable the cover body to be automatically separated from a male die after the cover body is stamped and formed, so that the step of manual unloading is omitted, and convenience is provided for automatic production of the shielding cover body.

Fig. 2-4, fig. 2 is a schematic structural view of an embodiment of a bending and forming apparatus of the present invention in an open mold state, fig. 3 is a schematic structural view of a vacuum suction plate in an embodiment of a bending and forming apparatus of the present invention, and fig. 4 is a schematic structural view of a gas circuit board in an embodiment of a bending and forming apparatus of the present invention.

As shown in fig. 2 to 4, in the embodiment of the present invention, the bending and forming apparatus includes an upper die and a lower die, the upper die includes an upper die plate 101, a punch 102 disposed on the upper die plate 101, and a wedge fixing block 103 disposed around the punch 102. The lower die comprises a lower die plate 201, an elastic seat 202 which is arranged in the cavity of the lower die plate 201 and is opposite to the convex die 102, and side bending blocks 203 which are arranged on the periphery of the elastic seat 202. The guide post 2021 is arranged at the bottom of the elastic seat 202, the groove matched with the guide post 2021 is arranged at the bottom of the containing cavity of the lower die plate 201, the second spring 2022 is arranged in the groove, and the guide post presses the second spring 2022 in the groove, so that the elastic seat 202 can be automatically ejected out through the second spring 2022 when the die is opened, and the stamped shielding case cover 300 can be ejected out from the containing cavity of the lower die plate 201.

As shown in fig. 6, a protrusion 203a is convexly disposed on a surface of the side bending block 203 opposite to the elastic seat 202, a lower sidewall of the protrusion 203a inclines from bottom to top toward one side of the elastic seat 202 to form a first inclined surface 203b, and the elastic seat 202 is provided with a second inclined surface 102a corresponding to the first inclined surface 203b, so that when the second inclined surface 102a contacts and presses the first inclined surface 203b, the side bending block 203 can be driven to move toward one side of the elastic seat 202 to bend the buckling position.

A first wedge surface 203c corresponding to the second wedge surface 103a at the lower end of the wedge fixing block 103 is arranged at the upper corner of the outer wall of the side bending block 203, and a stopper 204 is arranged between the side bending block 203 and the side wall of the cavity of the lower die plate 201 to abut against the side bending block 203 and provide a guide for the wedge fixing block 103 to be inserted into a V-shaped groove formed by the stopper 204 and the wedge fixing block 103.

A horizontally arranged accommodating groove is concavely arranged on the outer wall of the peripheral side of the lower template 201, a first spring 2032 is arranged in the accommodating groove, the first spring 2032 is locked in the accommodating groove through a locking bolt 2031, and the threaded end of the locking bolt 2031 sequentially penetrates through the side wall of the lower template 201 and the stop block 204 and then is inserted into the side bending block 203. Thus, during the process of resetting the upper die plate 101, the first spring 2032 can pull the side bending block 203 outwards, so that the elastic seat 202 can be reset smoothly to prepare for the next bending punching.

An annular groove is concavely arranged on the supporting surface of the elastic seat 202, an air channel plate 206 and a vacuum suction plate 205 are sequentially arranged in the annular groove, a U-shaped air channel 206a is arranged on the air channel plate 206, the vacuum suction plate 205 is pressed on the air channel plate 206, and a vacuum suction hole on the vacuum suction plate 205 is communicated with the U-shaped air channel 206a on the air channel plate 206. The air outlet end of the U-shaped air passage 206a is provided with a first air passage communicating block 207, the first air passage communicating block 207 is provided with a first air passage communicated with the U-shaped air passage 206a, and the lower end surface of the first air passage communicating block 207 is provided with a butt joint groove communicated with the first air passage communicating block 207.

A second air passage communicating block 208 butted with the first air passage communicating block 207 and a vacuum joint 209 connected with the second air passage communicating block 208 are arranged at the bottom of the cavity of the lower template, and the vacuum joint 209 is communicated with an external vacuum generating device through an air pipe. The upper end surface of the second air passage communicating block 208 is provided with a protruding portion 208a, and the air inlet end of the second air passage on the second air passage communicating block 208 is exposed outwards from the protruding portion 208 a. Therefore, after the elastic seat is pressed into the cavity, the butt-joint groove of the first air path communicating block 207 is pressed on the convex part 208a of the second air path communicating block 208, so that the air paths between the first air path communicating block 207 and the second air path communicating block 208 are quickly and effectively communicated.

The working principle of the utility model is as follows:

bending a product: placing the workpiece 300 on the elastic seat 202, and adjusting the position of the workpiece 300 to enable the peripheral edge parts to be pressed on the side bending blocks 203 respectively; the lower die plate 201 is driven by a press machine to drive the male die 102 and the four wedge fixing blocks 103 to move downwards, the male die 102 is in contact with the workpiece 300 on the elastic seat 202, the elastic seat 202 is extruded to shrink towards the cavity of the lower die plate 201, at the moment, the edge of the workpiece 300 and the bulge 203a of the side bending block 203 generate relative displacement, and the workpiece is bent towards the male die 102 under the extrusion of the bulge 203a to form four folded edges; then, the male die 102 is continuously driven to move downwards, when the second wedge-shaped surface 103a of the wedge fixing block 103 is contacted with the first wedge-shaped surface 203c of the side bending block 203, the wedge fixing block 103 presses the first inclined surface 203b of the side bending block 203 to press the folded end part to the second inclined surface 102a of the male die 102, an inner folding position 300a is formed, and the workpiece is bent into the shielding cover body 300.

Demolding and ejecting a product: after the cover 300 is molded, the vacuum generating device is started, and the negative pressure generated by the vacuum generating device is guided to the vacuum suction plate 205 to suck the cover 300; the upper die is reset to drive the male die 102 and the wedge fixing block 103 to move upwards together, and in the resetting process, the wedge fixing block 103 is separated from the first wedge-shaped surface 203c of the side bending block 203 in one step, so that when the male die 102 moves upwards, the male die 102 can extrude the side bending block 203 outwards. After the male die 102 is removed from the cavity of the lower die plate 201, the elastic seat 202 synchronously ejects the cap 300, and since the cap 300 is adsorbed on the elastic seat 202, the male die 102 is forced to be removed from the fastening position 300a of the cap 300 after further moving upwards, thereby completing the forced removal of the cap 300.

Compared with the prior art, the bending forming device provided by the utility model can adsorb the shielding cover body 300 on the elastic seat 202 of the lower template 201 through the vacuum suction plate 205 after the buckling position of the cover body 300 is formed, so that the male die 102 can be automatically forced to be removed from the buckling position 300a of the cover body 300 during resetting, the step of manual demoulding is omitted, and convenience is provided for automatic stamping of the shielding cover body 300.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A buckling position forced-releasing structure of a shielding cover body is applied to a lower die of a bending forming device of the shielding cover body, the lower die comprises a lower die plate and an elastic seat arranged in a containing cavity of the lower die plate, and the buckling position forced-releasing structure is characterized by comprising a vacuum suction plate and an air channel plate, wherein the vacuum suction plate and the air channel plate are arranged on the elastic seat, a plurality of U-shaped air channels which are concentrically arranged are arranged on the air channel plate, and the cross sections of the U-shaped air channels are U-shaped and are communicated with vacuum suction holes of the vacuum suction plate;

2. The structure of claim 1, wherein the bottom of the first air passage communicating block has a butt-joint groove, and the butt-joint groove is communicated with the air outlet end of each first air passage in the first air passage communicating block;

3. The buckling position forced releasing structure of the shield cover body according to claim 1, wherein a vacuum joint is arranged in the lower template, and the vacuum joint is connected with the second air path communicating block and communicated with an external vacuum generating device through an air pipe.