阅读说明：本技术 一种散热片折弯成型工装 (Fin shaping frock of bending ) 是由 刘晓熙 谢华华 杨晓锋 朱新民 王锰伟 张旭 赵河林 王许涛 王洪权 孙懊博 于 2018-06-13 设计创作，主要内容包括：本发明涉及一种散热片折弯成型工装。散热片折弯成型工装包括可相对活动的上模和下模,下模包括固定成型块和可相对固定成型块上下活动的活动成型块,上模具有用于下压散热片的上模压型面,活动成型块顶部具有与上模压型面相对设置用于支撑散热片的活动成型块支撑面,散热片折弯成型工装还包括可在上下方向上发生弹性形变以对活动成型块施加向上弹力的弹性复位件,固定成型块上具有处于活动成型块一侧竖向设置的折弯成型面,活动成型块背向折弯成型面的一侧具有避让散热片中间波纹段的避让空间。散热片端部折弯成型过程中,中间波纹段上下平移,不会与折弯机刀架干涉。(The invention relates to a bending and forming tool for a radiating fin. The fin shaping frock of bending includes the last mould and the lower mould that can move about relatively, the lower mould is including the activity shaping piece of fixed shaping piece and the activity shaping piece that can move about relatively from top to bottom, it has the last mould pressing profile that is used for pushing down the fin to go up the mould pressing profile, activity shaping piece top has and sets up the activity shaping piece holding surface that is used for supporting the fin relatively with last mould pressing profile, the fin shaping frock of bending still includes can take place elastic deformation in the upper and lower direction in order to exert the elasticity piece that resets of upwards elasticity to the activity shaping piece, the shaping face of bending that is in the vertical setting in activity shaping piece one side has on the fixed shaping piece, the activity shaping piece is bent one side of shaping face dorsad and is had the space of. In the bending and forming process of the end part of the radiating fin, the middle corrugated section moves up and down, and cannot interfere with a tool rest of a bending machine.)

1. The utility model provides a fin shaping frock of bending, which is characterized by, including relative activity's last mould and lower mould, the lower mould is including the activity shaping piece of fixed shaping piece and relative fixed shaping piece activity from top to bottom, it has the last mould pressing profile that is used for pushing down the fin to go up the mould, activity shaping piece top has and sets up the activity shaping piece holding surface that is used for supporting the fin relatively with last mould pressing profile, the fin shaping frock of bending still includes can take place elastic deformation in the upper and lower direction and exert the elasticity piece that resets of elasticity in order to the activity shaping piece, the shaping face of bending that is in the vertical setting in activity shaping piece one side has on the fixed shaping piece, the activity shaping piece one side of the shaping face of bending dorsad has the space of dodging the middle ripple section.

2. The fin bending forming tool according to claim 1, wherein the elastic resetting member is arranged between the fixed forming block and the movable forming block.

3. The fin bending forming tool according to claim 2, wherein the fixed forming block is L-shaped, the L-shaped fixed forming block has a horizontal portion and a vertical portion, the elastic resetting member is disposed on the horizontal portion of the L-shaped fixed forming block, and a side surface of the vertical portion of the L-shaped fixed forming block facing the movable forming block forms the bending forming surface.

4. The fin bending forming tool according to claim 2, wherein the elastic reset member is a rubber block.

5. The fin bending forming tool according to claim 4, wherein the rubber block is fixedly connected with the movable forming block through a bolt.

6. The cooling fin bending forming tool according to any one of claims 1 to 5, wherein the cooling fin bending forming tool further comprises a base, and the fixed forming block is detachably connected with the base.

7. The heat sink bending and forming tool according to claim 6, wherein the base has a groove, the fixing and forming block has a key, and the fixing and forming block is engaged with the base through a key groove.

8. The cooling fin bending forming tool according to any one of claims 1 to 5, wherein the fixed forming block is provided with a fixed forming block supporting surface which is flush with the movable forming block supporting surface on the movable forming block to support the cooling fin when the movable forming block is reset to the initial position.

Technical Field

The invention relates to a bending and forming tool for a radiating fin.

Background

A heat sink is a commonly used heat dissipation structure, and is used in various devices to protect the devices. The structure of the conventional radiating fin is shown in fig. 1, the middle part is a continuous corrugated section 41, two ends are provided with L-shaped flanges, and the bending heights of the middle corrugated section 41 and the L-shaped flanges 42 at the ends are large. The corrugated shape can be formed by pressing with a special tool, after the corrugated shape is formed, folded edges are reserved at two ends of the cooling fin 4, as shown in fig. 2, and then the folded edges are bent again through a bending machine to form an L-shaped flange 42 as shown in fig. 1, wherein the L-shaped flange needs to be formed by bending upwards by 90 degrees through the bending machine. Because the bending height is higher, and the width between turn-ups and the ripple section is less, has surpassed bender limit range, consequently, when using the bender to bend the shaping to fin both ends, the middle ripple section of fin bumps mutually with the bender knife rest easily and interferes and leads to unable processing requirement of reaching.

Disclosure of Invention

The invention aims to provide a bending and forming tool for a radiating fin, which aims to solve the problem that when a bending machine is used for bending and forming two ends of the radiating fin, the middle corrugated section of the radiating fin is easy to collide with a tool rest of the bending machine to interfere with each other, so that the machining requirement cannot be met.

In order to achieve the purpose, the cooling fin bending forming tool comprises an upper die and a lower die which can move relatively, wherein the lower die comprises a fixed forming block and a movable forming block which can move up and down relatively to the fixed forming block, the upper die is provided with an upper die pressing molded surface used for pressing a cooling fin down, the top of the movable forming block is provided with a movable forming block supporting surface which is arranged opposite to the upper die pressing molded surface and used for supporting the cooling fin, the cooling fin bending forming tool further comprises an elastic resetting piece which can be elastically deformed in the up-down direction to apply upward elasticity to the movable forming block, the fixed forming block is provided with a bending forming surface which is vertically arranged on one side of the movable forming block, and one side of the movable forming block, which is back to the bending forming surface, is provided with an. The flanging reserved for the radiating fin is horizontally placed on the movable forming block, the upper die is placed at the part, to be bent, of the radiating fin, the upper die is attached to the corrugated structure of the end portion of the radiating fin, the upper die is controlled to be close to the lower die, the elastic reset piece is gradually extruded by the movable forming block, the flanging reserved for the radiating fin is gradually bent upwards in a horizontal state, finally, the flanging is bent upwards by 90 degrees after being attached to a bending forming surface, the middle corrugated section moves up and down in the bending forming process of the end portion of the radiating fin, and the flanging cannot interfere with a tool rest.

The elastic reset piece is arranged between the fixed forming block and the movable forming block.

The fixed forming block is L-shaped, the L-shaped fixed forming block is provided with a horizontal part and a vertical part, the elastic reset piece is arranged on the horizontal part of the L-shaped fixed forming block, and the side surface of the vertical part of the L-shaped fixed forming block, which faces the movable forming block, forms the bending forming surface.

The elastic reset piece is a rubber block.

The rubber block is fixedly connected with the movable forming block through a bolt.

The cooling fin bending forming tool further comprises a base, and the fixed forming block is detachably connected with the base. The assembly and disassembly are convenient, the storage is convenient, the occupied space is small, and the transportation is convenient.

The base is provided with a groove, the fixed forming block is provided with a convex key, and the fixed forming block is matched with the base through a key groove. The fixed forming block and the base are convenient to assemble and disassemble, and time and labor are saved.

The fixed forming block is provided with a fixed forming block supporting surface which is parallel and level with the movable forming block supporting surface on the movable forming block to support the radiating fins when the movable forming block is reset to the initial position. When the movable forming block is at the initial position, the fixed forming block supporting surface and the movable forming block supporting surface together support the radiating fin.

Drawings

FIG. 1 is a schematic structural view of a heat sink with bent ends;

FIG. 2 is a schematic structural view of the end of the heat sink before bending;

fig. 3 is a schematic structural diagram of a cooling fin bending and forming tool according to embodiment 1 of the present invention;

FIG. 4 is a schematic structural view of the lower mold of FIG. 3;

FIG. 5 is a schematic structural diagram of the base in FIG. 3;

FIG. 6 is a schematic view of the heat sink of FIG. 2 placed on the movable mold block of FIG. 3;

FIG. 7 is a schematic structural view of a heat sink with one end bent and formed;

in the figure: 1-upper mould; 11-upper mould pressing molded surface; 2-lower mould; 21-fixing a forming block; 211-bending the molding surface; 212-fixing the forming block supporting surface; 22-movable forming blocks; 221-a movable forming block support surface; 23-a rubber block; 24-a key; 25-bolt; 3-a base; 31-a groove; 4-a heat sink; 41-a ripple section; 42-L-shaped flanging.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

The specific embodiment 1 of the cooling fin bending forming tool disclosed by the invention comprises an upper die 1, a lower die 2 and a base 3, wherein the lower die 2 comprises a fixed forming block 21 and a movable forming block 22 which can move up and down relative to the fixed forming block, a rubber block 23 is arranged between the fixed forming block 21 and the movable forming block 22, and the rubber block is fixedly connected with the movable forming block 22 through a bolt 25, as shown in fig. 3 to 7. The rubber block 23 is elastically deformable in the up-down direction to apply an upward elastic force to the movable molding block 22. The upper die 1 is provided with an upper die profiling surface 11 for pressing the radiating fins downwards, and the top of the movable forming block 22 is provided with a movable forming block supporting surface 221 which is opposite to the upper die profiling surface 11 and used for supporting the radiating fins. The fixed forming block is L-shaped, the L-shaped fixed forming block is provided with a horizontal part and a vertical part, the rubber block 23 is arranged on the horizontal part of the L-shaped fixed forming block, and the side surface of the vertical part of the L-shaped fixed forming block facing the movable forming block forms a bending forming surface 211. One side of the movable forming block 22, which is bent back to form a molded surface, is provided with an avoiding space avoiding the middle corrugated section 41 of the radiating fin. The L-shaped fixed forming block is provided with a fixed forming block supporting surface 212 which is flush with the movable forming block supporting surface 221 on the movable forming block and supports the radiating fin 4 when the movable forming block 22 is reset to the initial position. The fixed forming block is provided with a convex key 24, the base 3 is provided with a groove 31, and the fixed forming block is matched with the base through a key groove.

The structure of the end of the heat sink before bending is shown in fig. 2, and a folded edge is reserved on the end. The reserved hem of the radiating fin 4 is horizontally placed on the movable forming block 22, the upper die 1 is placed at the part, to be bent, of the radiating fin, the upper die 1 is attached to the corrugated structure, located at the end part, of the radiating fin 4, then the upper die 1 is controlled to be close to the lower die 2, the movable forming block 22 gradually extrudes the rubber block 23, the reserved hem of the radiating fin is gradually bent upwards from the horizontal state, finally the reserved hem of the radiating fin is attached to a bending forming surface to be bent upwards for 90 degrees to form an L-shaped flanging 42, and the middle corrugated section 41 vertically translates in the bending forming process of the end part of the radiating fin and cannot interfere.