CN216656063U - Stretching and bending integrated forming device of heat dissipation shielding case - Google Patents

Abstract

The utility model discloses a stretching and bending integrated forming device of a heat dissipation shielding case, wherein a male die is elastically arranged in a containing cavity of a lower die plate, side bending blocks are respectively arranged at the periphery of the male die, a locking bar is arranged in each side bending block, and a first end of each locking bar extends towards the male die to lock the male die; meanwhile, a lock hole is formed in the lock bar, and a first wedge-shaped surface is arranged on the side wall of the upper part of the lock hole; the upper template is provided with a locking bar driving rod corresponding to the locking bar. Therefore, during stamping, the male die can be locked by the locking strip, so that the female die and the male die are conveniently closed and the boss structure is stretched; in the process of stretching the boss, the locking bar is synchronously driven to be drawn out by the locking bar driving rod, so that after the boss structure is formed, the male die can be pressed into the accommodating cavity of the lower template, and the workpiece is folded by the side bending block. Therefore, the boss of the heat dissipation shielding cover is stretched and the side edge of the heat dissipation shielding cover is bent at one time, and the production efficiency of the heat dissipation shielding cover is greatly improved.

Description

A stretching and bending integrated molding device for a heat dissipation shield

technical field

The utility model relates to the technical field of stamping dies, in particular to a stretching and bending integral molding device for a heat dissipation shield.

Background technique

In the design of the circuit board, in order to prevent external radiation and interference from radiation, a shielding case is set on the circuit substrate to surround the components on the PCB board. With the increase of components, the shielding case is not only used for shielding. Since the shielding case is usually made of stainless steel and white copper, it also has good thermal conductivity, so some circuit designers will consider using the shielding case for heat dissipation.

In order to form a good contact between the shielding cover and the heating element, an inwardly concave boss is selected to be punched out on the shielding cover, so that the shielding cover can be effectively contacted with the heating element and the heat generated by the heating element can be discharged.

However, the existing stamping dies cannot realize the one-time forming of boss stretching and side bending, which are basically carried out in two times, so it is difficult to improve the production efficiency.

Utility model content

The main purpose of the utility model is to provide a stretching and bending integral molding device for a heat dissipation shield, which aims to realize the one-time forming of boss stretching and side bending, and improve the production efficiency of the heat dissipation shield.

In order to achieve the above purpose, the stretching and bending integrated molding device for the heat dissipation shield proposed by the present invention includes an upper mold and a lower mold, and the upper mold includes an upper template and a concave mold arranged on the upper template. The lower die includes a lower die plate and a punch set on the lower die plate; it is characterized in that,

The punch is elastically arranged in the cavity of the lower template, and the sides of the punch are respectively provided with side bending blocks; one end extends toward the punch and locks the punch;

The lock bar is provided with a lock hole, and the upper side wall of the lock hole is provided with a first wedge-shaped surface; the upper template is provided with a lock bar driving rod corresponding to the lock bar, and the lower part of the lock bar driving rod is provided. The end surface is provided with a second wedge-shaped surface corresponding to the first wedge-shaped surface.

Optionally, a guide post is vertically provided on the lower surface of the punch, a first spring is sleeved on the guide post, and the first spring is sandwiched between the punch and the bottom of the cavity of the lower template. between.

Optionally, the bottom of the cavity of the lower template is concavely provided with a guide hole for the guide post to pass through, the guide post is provided with a step, and the first spring is pressed into the guide hole by the step.

Optionally, a horizontally arranged accommodating groove is recessed on the peripheral side wall of the lower formwork, a second spring is arranged in the accommodating groove, and the second end of the locking bar extends toward the peripheral sidewall of the lower formwork and Insert into the accommodating groove; a pressing ring is sleeved on the locking bar, and the second spring is pressed in the accommodating groove by the pressing ring.

According to the stretch-bending integrated molding device of the heat dissipation shield provided by the utility model, the punch is elastically arranged in the cavity of the lower template, and side bending blocks are respectively arranged around the punch to bend each side of the punch. A lock bar is arranged in the block, and the first end of the lock bar is extended to the punch to lock the punch; at the same time, a lock hole is arranged on the lock bar, and a first wedge-shaped surface is arranged on the upper side wall of the lock hole; the upper template A locking bar driving rod corresponding to the locking bar is arranged on the top, and the lower end surface of the locking bar driving rod is provided with a second wedge-shaped surface corresponding to the first wedge-shaped surface. Therefore, when punching, the punch can be locked first by the lock bar, so that the die and the punch can be clamped to stretch out the boss structure; during the process of stretching the boss, the lock bar is driven by the lock bar driving rod synchronously. Pull out, so that after the boss structure is formed, the punch can be pressed into the cavity of the lower template, and the workpiece is folded by the side bending block. As a result, the projection of the heat dissipation shield can be stretched and the side edges are bent and formed at one time, which greatly improves the production efficiency of the heat dissipation shield; and the structure is simple and easy to implement.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained based on the structures shown in these drawings without any creative effort.

1 is a schematic structural diagram of an embodiment of the stretch-bending integrated molding device of the present invention in a mold-opening state;

2 is a schematic structural diagram of an embodiment of the stretch-bending integrated molding device of the present invention in a clamping state;

The purpose realization, functional characteristics and advantages of the present utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the difference between the various components under a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exists, and is not within the protection scope required by the present utility model.

The utility model provides a stretching and bending integral molding device for a heat dissipation shielding cover.

Referring to FIGS. 1-2, FIG. 1 is a schematic structural diagram of an embodiment of the stretch-bending integrated molding device of the present invention in a mold-open state, and FIG. 2 is an embodiment of the stretch-bending integrated molding device of the present invention in a mold-closed state. Schematic diagram of the structure.

As shown in Figures 1-2, in the embodiment of the present invention, the stretch-bending integrated forming device includes an upper die and a lower die, and the upper die includes an upper die plate 101 and a concave die 102 arranged on the upper die plate 101, The lower die includes a lower die plate 201 and a punch 202 arranged on the lower die plate 201. The lower surface of the die 102 is provided with a concave position 102a, and the upper surface of the punch die 202 is provided with a convex place 202a. When molding, the boss structure can be stretched on the workpiece 300 .

The punch 202 is elastically arranged in the cavity of the lower template 201. Specifically, a guide post 2021 is vertically provided on the lower surface of the punch 202, a first spring 2022 is sleeved on the guide post 2021, and the lower end of the guide post 2021 is inserted At the bottom of the cavity of the lower die plate 201, the first spring 2022 is sandwiched between the punch 202 and the bottom of the cavity to provide an elastic support for the punch 202, so that the punch 202 can move toward the cavity when pressed by the punch 102. The cavity is retracted, and when the female mold 102 is reset, the male mold 202 is automatically reset.

In this embodiment, a guide hole for the guide post 2021 to pass through is recessed at the bottom of the cavity. The guide post 2021 is provided with a step, and the first spring 2022 is pressed into the guide hole by the step on the guide post 2021 to avoid The first spring 2022 is exposed to the outside. At the same time, a stop ring 2011 is provided at the lower end of the guide hole to prevent the first spring 2022 from being pushed out of the guide hole.

The sides of the punch 202 are respectively provided with side bending blocks 203, and a bending gap is set between the side bending blocks 203 and the side walls around the punch 202. When the punch 102 presses the punch 202 into the cavity of the lower template 201 , the side bending block 203 can simultaneously bend the four sides of the workpiece 300 by 90 degrees.

Each side of the bending block 203 is provided with a locking bar 204 , the first end of the locking bar 204 extends toward the punch 202 , and the second end of the locking bar 204 extends toward the peripheral side wall of the lower mold plate 201 . The locking bar 204 is provided with a locking hole, and the upper side wall of the locking hole is provided with a first wedge-shaped surface 204a. The upper template 101 is provided with a locking bar driving rod 103 corresponding to the locking bar 204 , and the lower end surface of the locking bar driving rod 103 is provided with a second wedge-shaped surface 103 a corresponding to the first wedge-shaped surface 204 a. When punching, the female die 102 is first contacted with the workpiece 300, and the workpiece 300 is punched onto the punch 202. At this time, the locking bar 204 locks the punch 202 to prevent the punch 202 from going down with the workpiece 300 into the cavity of the template 201. Move to affect the extrusion of the boss structure. During the stretching process of the boss structure, the second wedge-shaped surface 103a of the locking bar driving rod 103 synchronously presses the first wedge-shaped surface 204a of the locking bar 204, so that the locking bar 204 is gradually pulled out from below the punch 202. After the boss structure is stretched, the locking bar driving rod 103 just pulls out the locking bar 204 from under the punch 202, so that the punch 202 can be pressed into the cavity of the lower template 201; During the process of forming the cavity of the template 201 , the punch 202 and the side bending block 203 are dislocated, thereby bending the four sides of the workpiece 300 , thereby completing the boss stretching and side bending forming of the heat dissipation shield.

In this embodiment, a horizontally arranged accommodating groove is recessed on the peripheral side wall of the lower template 201, a second spring 2042 is arranged in the accommodating groove, and a pressing block 2043 is arranged at the notch of the accommodating groove to The second spring 2042 is locked in the accommodating groove. The second end of the lock bar 204 is inserted into the second spring 2042, and the lock bar 204 is provided with a pressure ring 2041, the pressure ring 2041 presses the second spring 2042 on the pressure block 2043, and the pressure block 2043 is provided with a lock An escape hole through which the strip 204 passes. When the lock bar driving rod 103 squeezes the lock bar 204 and pulls it out, it will drive the pressure ring 2041 to compress the second spring 2042 . When the lock bar driving rod 103 is reset with the upper template 101 , the compressed second spring 2042 drives the lock bar 204 Relock the punch 202 to facilitate the next punching.

Compared with the prior art, the utility model has the beneficial effects that the projection of the heat-dissipating shield can be stretched and the side edges are bent and formed at one time, thereby greatly improving the production efficiency of the heat-dissipating shield; and the structure is simple and easy to implement.

The above are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model's patent. Any equivalent structural transformations made by using the contents of the present utility model description and accompanying drawings under the concept of the utility model of the present utility model, Or directly/indirectly applied in other related technical fields are included in the scope of patent protection of the present invention.

Claims (4)

1. A stretching and bending integrated forming device of a heat dissipation shielding case comprises an upper die and a lower die, wherein the upper die comprises an upper die plate and a female die arranged on the upper die plate, and the lower die comprises a lower die plate and a male die arranged on the lower die plate; it is characterized in that the preparation method is characterized in that,

the male die is elastically arranged in the containing cavity of the lower die plate, and the periphery of the male die is respectively provided with a side bending block; a locking strip is arranged in each side bending block, and a first end of each locking strip extends towards the male die and locks the male die;

a lock hole is formed in the lock bar, and a first wedge-shaped surface is arranged on the side wall of the upper portion of the lock hole; the upper die plate is provided with a locking bar driving rod corresponding to the locking bar, and the lower end face of the locking bar driving rod is provided with a second wedge-shaped face corresponding to the first wedge-shaped face.

2. The stretch-bending integrated forming device for the heat dissipation shielding case according to claim 1, wherein a guide pillar is vertically arranged on the lower surface of the male die, a first spring is sleeved on the guide pillar, and the first spring is clamped between the male die and the bottom of the containing cavity of the lower die plate.

3. The stretch-bending integrated forming device for the heat dissipation shielding case as claimed in claim 2, wherein a guide hole for a guide post to pass through is concavely formed at the bottom of the cavity of the lower die plate, a step is formed on the guide post, and the first spring is pressed in the guide hole by the step.

4. The stretch-bending integrated forming device for the heat dissipation shielding case according to any one of claims 1 to 3, wherein a horizontally disposed accommodating groove is concavely formed on a peripheral side wall of the lower template, a second spring is disposed in the accommodating groove, and a second end of the locking bar extends towards the peripheral side wall of the lower template and is inserted into the accommodating groove; the cover is equipped with the clamping ring on the locking bar, the second spring quilt the clamping ring is pressed in the storage tank.

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