Bending die for heat dissipation aluminum plate of curved-surface display

Abstract

The utility model discloses a bending die for a heat dissipation aluminum plate of a curved display, which comprises a heat dissipation straight plate, a lower die and an upper die, the heat dissipation straight plate is formed by aluminum extrusion of aluminum materials, the cross section of the heat dissipation straight plate is composed of a concave surface and a convex surface, the lower die is provided with a concave forming groove, the forming groove is arc-shaped, the forming groove is provided with a first profiling part, and the first profiling part is provided with a second profiling part. Supporting surfaces are arranged on the two sides, located on the forming groove, of the lower die and are used for placing the two ends of the heat dissipation straight plate; a telescopic clamping seat is arranged at the position, located on the supporting face, of the lower die, the clamping seat abuts against the end of the heat dissipation straight plate, the upper die comprises an upper plate, a movable plate movably installed on the upper plate and an arc-shaped pressing die arranged on the lower wall of the movable plate, and the arc-shaped pressing die is matched with the forming groove. The arc-shaped pressing die is provided with a second profiling part matched with the first profiling part; first forming ribs are arranged at the position, from the middle to the outer side, of the second profiling part and distributed in the width direction of the second profiling part.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mould field, especially a kind of bending die of curved surface display heat dissipation aluminum plate. BACKGROUND

[0002] In one of the heat dissipation aluminum plate, it is mainly to realize the protection, support and heat dissipation of the electronic components of curved surface display, so it is provided with concave-convex surface, to improve the heat dissipation area while avoiding affecting its thickness.

[0003] The existing method is generally to adopt flat plate bending, then to adopt CNC or milling cutter to cut, to form the heat dissipation aluminum plate with concave-convex surface, its characteristics are that product precision and product structure stability are higher, but cost is higher.

[0004] Although there is also the idea of first forming concave-convex surface and then bending, but stress rebound occurs in actual processing, resulting in large error problem. SUMMARY

[0005] The main purpose of the utility model is to provide a kind of bending die of curved surface display heat dissipation aluminum plate, to realize the stable bending of curved surface heat dissipation aluminum plate, while reducing its stress rebound.

[0006] To achieve the above-mentioned purpose, the utility model provides a kind of bending die of curved surface display heat dissipation aluminum plate, comprising:

[0007] Heat dissipation straight plate, the heat dissipation straight plate is formed by aluminum extrusion of aluminum material, the cross section of the heat dissipation straight plate is composed of concave-convex surface;

[0008] Lower mould, the lower mould is provided with recessed forming groove, the forming groove is arc-shaped, the forming groove is provided with first imitation part, the lower mould is provided with support surface on both sides of forming groove, and the support surface is used to place both ends of heat dissipation straight plate;

[0009] The position of the lower mould at support surface is provided with telescopic clamping seat, and the clamping seat is in contact with the end of heat dissipation straight plate;

[0010] Upper mould, the upper mould includes upper plate, movable plate movably installed on the upper plate and arc-shaped pressing die arranged on the lower wall of movable plate, the arc-shaped pressing die is matched with forming groove,

[0011] The arc-shaped pressing die is provided with second imitation part matched with first imitation part;

[0012] The middle part of the second imitation part is provided with first forming rib to the position of outside, and the first forming rib is distributed along the width direction of second imitation part.

[0013] In actual processing, first, the heat dissipation straight plate with concave-convex surface is placed on the supporting surface, and the two sides of the heat dissipation straight plate are positioned by the two clamping seats,

[0014] When the upper die and the lower die are closed, the top end of the upper die is provided with a hydraulic device for driving the movement of the upper die towards the lower die, first, the second profiling part of the convex end of the arc-shaped pressing die extends into the concave-convex surface of the heat dissipation straight plate, and positioning is realized, when the positioning is stable, the hydraulic device applies a first section of pressure, until the movable plate is attached to the upper plate, at this time, the heat dissipation straight plate is bent at a predetermined angle, and the two ends of the heat dissipation straight plate are bent and deformed downward under the action of pressure, and the two ends of the heat dissipation straight plate are curved into the two ends of the forming groove;

[0015] At this time, the hydraulic device applies a second section of pressure, and the arc-shaped pressing die and the forming groove are closed, the arc length of the forming groove is greater than the length of the product, so that the two ends of the stable stamping forming heat dissipation arc plate can be formed, the pressure can be continued for a predetermined time, thereby reducing the stress, and the first rib position can reduce the length deformation of the heat dissipation aluminum plate caused by the length of the heat dissipation aluminum plate, thereby ensuring the structural stability in the length direction,

[0016] The through hole of the heat dissipation aluminum plate is generally processed by CNC in the later stage, thereby ensuring the processing stability and precision;

[0017] The design points of the mold are: 1, the cooperation of the clamping seat and the supporting surface; 2, the cooperation of the two sections of pressure; 3, the cooperation of the first rib position and the second forming rib, thereby reducing the generation of internal stress. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional cooperation of the upper die and the lower die Figure 1 ;

[0019] Figure 2 is a schematic diagram of the three-dimensional cooperation of the upper die and the lower die Figure 2 ;

[0020] Figure 3 is a schematic diagram of the upper die and the lower die after closing;

[0021] Figure 4 is a cross-sectional view of the mold Figure 1 ;

[0022] Figure 2 is a cross-sectional view of the mold Figure 6 ;

[0023] Figure 7 is a schematic diagram of the first forming rib and the second forming rib;

[0024] Figure 8 is a plan view of the product;

[0025] Figures 1 to 8 is a schematic diagram of the product in three dimensions.

[0026] In the drawings,

[0027] 1 is a heat dissipation straight plate, 1a is a curved heat dissipation aluminum plate, 10 is a concave-convex surface, 101 is a first profiling part, 102 is a second profiling part, 103 is a chamfer,

[0028] 2 is an upper die, 21 is a forming groove, 22 is a supporting surface,

[0029] 3 is a lower die, 31 is an upper plate, 32 is a movable plate, 33 is an arc-shaped pressing die;

[0030] 4 is a clamping seat, 41 is a telescopic device,

[0031] 51 is a first forming rib, 52 is a second forming rib,

[0032] 61 is a guide hole, 62 is a guide column, 63 is a top spring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0035] In addition, if the embodiments of the present application involve descriptions of "first" or "second", etc., the descriptions of "first" or "second" are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but must be based on the realization of the ordinary skill in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0036] As ​ shown, a bending die for a curved display heat dissipation aluminum plate comprises:

[0037] A heat-dissipating straight plate 1 is formed by extruding aluminum material, and the cross section of the heat-dissipating straight plate 1 is composed of a concave-convex surface 10;

[0038] A lower die 3 is provided with a concave forming groove 21 in an arc shape, and the lower die 3 is provided with a first imitation part 101, and the lower die 3 is provided with a supporting surface 22 on both sides of the forming groove 21, and the supporting surface 22 is used for placing both ends of the heat-dissipating straight plate 1;

[0039] The lower die 3 is provided with a telescopic clamping seat 4 at the position of the supporting surface 22, and the clamping seat 4 is in contact with the end of the heat-dissipating straight plate 1;

[0040] An upper die includes an upper plate 31, a movable plate 32 movably installed on the upper plate 31, and an arc-shaped pressing die 33 provided on the lower wall of the movable plate 32, and the arc-shaped pressing die 33 is matched with the forming groove 21,

[0041] The arc-shaped pressing die 33 is provided with a second imitation part 102 matched with the first imitation part 101;

[0042] The second imitation part 102 is provided with a first forming rib 51 at the position of the outer side of the middle part, and the first forming rib 51 is distributed along the width direction of the second imitation part 102.

[0043] In actual processing, first, the heat-dissipating straight plate 1 with the forming concave-convex surface 10 is placed on the supporting surface 22, and the two clamping seats 4 are used to position the two sides of the heat-dissipating straight plate 1,

[0044] When the upper die and the lower die 3 are closed, the top end of the upper die is provided with a hydraulic device for driving it to move towards the lower die 3, first, the second imitation part 102 of the convex end of the arc-shaped pressing die 33 extends into the concave-convex surface 10 of the heat-dissipating straight plate 1, and positioning is realized, when the positioning is stable, the hydraulic device applies a first section of pressure, until the movable plate 32 is attached to the upper plate 31, at this time, the heat-dissipating straight plate 1 is bent at a predetermined angle, and the two ends of the heat-dissipating straight plate 1 are bent and deformed downward under the action of pressure, and the two ends of the heat-dissipating straight plate 1 are bent into the two ends of the forming groove 21;

[0045] At this time, the hydraulic device applies a second section of pressure, and the arc-shaped pressing die 33 and the forming groove 21 are closed, and the arc length of the forming groove 21 is greater than the length of the product, so that the two ends of the stable stamping forming heat-dissipating arc plate can be continued for a predetermined time, thereby reducing the stress, and the first rib position can reduce the length deformation of the heat-dissipating aluminum plate caused by the length of the heat-dissipating aluminum plate, thereby ensuring the structural stability in the length direction,

[0046] The through hole of the heat-dissipating aluminum plate is generally processed by a later CNC, thereby ensuring the processing stability and precision.

[0047] The design points of the mold are: 1, the cooperation of the clamping seat 4 and the supporting surface 22; 2, the cooperation of the two pressure sections; and 3, the cooperation of the first rib position and the second forming rib 52, thereby reducing the generation of internal stress.

[0048] Specifically, the supporting surface 22 is a plane.

[0049] In the embodiment of the utility model, the first and / or second profiled part is provided with a second forming rib 52 along the length direction thereof, and the provision of the second forming rib 52 further avoids stress rebound of the curved heat dissipation aluminum plate 1a after bending, thereby ensuring the stability of the structure.

[0050] It can be understood that the provision of the second forming rib 52 can form a reinforcing rib, i.e., the position can be a convex rib or a concave rib, which plays a role of a tie rod.

[0051] Specifically, the lower mold 3 is provided with a telescopic device 41, and the clamping seat 4 is arranged on the telescopic device 41.

[0052] In the embodiment of the utility model, the second forming rib 52 is linearly distributed, and the linear structure is composed of a plurality of points or straight lines.

[0053] Specifically, the upper plate 31 is provided with a guide hole 61, the upper wall of the arc-shaped pressing mold 33 is provided with a guide column 62 matched with the guide hole 61, a top spring 63 is arranged between the guide column and the guide hole 61, and the top spring is used to apply downward pressure to the arc-shaped pressing mold 33, so that the arc-shaped pressing mold 33 is preliminarily fixed when the mold is closed, thereby avoiding position or local deformation caused by direct stamping.

[0054] In the embodiment of the utility model, the concave-convex surface 10 includes concave and convex portions distributed along the length, and a chamfer 103 is arranged at the position where the concave and convex portions are connected.

[0055] Specifically, the chamfer is 45 degrees, thereby facilitating mold removal and improving processing stability.

[0056] In the embodiment of the utility model, the arc length of the forming groove 21 is greater than the length of the heat dissipation straight plate 1, thereby enabling the heat dissipation arc plate to be formed in the mold closing interval.

[0057] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation or direct / indirect application in other related technical fields under the utility model concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A bending die for a curved display heat sink aluminum plate, characterized in that, The application relates to a heat-dissipating straight plate and a manufacturing method thereof. The heat-dissipating straight plate is made of aluminum material and is formed by extrusion, and the cross section of the heat-dissipating straight plate is composed of concave-convex surfaces; A lower die is provided with a concave forming groove, the forming groove is in an arc shape, the forming groove is provided with a first imitation part, and the lower die is provided with supporting surfaces on both sides of the forming groove, and the supporting surfaces are used for placing both ends of the heat-dissipating straight plate; The lower die is provided with a telescopic clamping seat at the position of the supporting surface, and the clamping seat is in abutment with the end of the heat-dissipating straight plate; An upper die comprises an upper plate, a movable plate movably arranged on the upper plate and an arc-shaped pressing die arranged on the lower wall of the movable plate, and the arc-shaped pressing die is matched with the forming groove, The arc-shaped pressing die is provided with a second imitation part matched with the first imitation part; The middle part of the second imitation part is provided with a first forming rib at the position of the outer side, and the first forming rib is distributed along the width direction of the second imitation part. 2.The press-bending mold for the heat-dissipation aluminum plate of the curved display according to claim 1, wherein: The supporting surface is a plane. 3.The press-bending mold for the heat-dissipation aluminum plate of the curved display according to claim 1, wherein: The first imitation part and / or the second imitation part are provided with a second forming rib along the length direction. 4.The press-bending mold for the heat-dissipation aluminum plate of the curved display according to claim 1, wherein: The lower die is provided with a telescopic device, and the clamping seat is arranged on the telescopic device. 5.The bending die for the heat-dissipation aluminum plate of the curved display according to claim 3, wherein: The second forming rib is in a linear distribution. 6.The press-bending mold of the heat-dissipation aluminum plate for the curved display according to claim 1, wherein: The upper plate is provided with a guide hole, the upper wall of the arc-shaped pressing die is provided with a guide column matched with the guide hole, a top spring is arranged between the guide column and the guide hole, and the top spring is used for applying downward pressure on the arc-shaped pressing die. 7.The press-bending mold of the heat-dissipation aluminum plate for the curved display according to claim 1, wherein: the first mold is a mold for bending the heat-dissipation aluminum plate into a first curved shape; and the second mold is a mold for bending the heat-dissipation aluminum plate into a second curved shape. The concave-convex surfaces comprise concave parts and convex parts distributed along the length direction, and the position where the concave parts and the convex parts are connected is provided with a chamfer. 8.The press-bending mold of the heat-dissipation aluminum plate for the curved display according to claim 7, wherein: The chamfer is in a 45-degree angle.

9. The bending die for the curved display heat dissipation aluminum plate as described in claim 1, characterized in that: The arc length of the forming groove is greater than the length of the heat-dissipating straight plate.

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