TWI665954B - Heat sink unit fixture structure - Google Patents

Abstract

A heat dissipation unit fixture structure includes: a body; the body has a cavity inside And the upper side has a top, and the top has at least one open port, the open port is provided with at least a silicon dioxide layer, and the chamber is in a vacuum airtight or positive pressure inert atmosphere, and passes through the heat dissipation unit fixture of the present invention The structure provides a better environment for laser processing or laser welding and processing flexibility.

Description

Cooling unit fixture structure

The utility model relates to a heat dissipation unit fixture structure, in particular to a heat dissipation unit fixture structure for preventing laser welding work welding objects from being polluted and oxidized.

The current temperature-equalizing plate is formed by stacking at least two metal plates on top of each other by diffusion bonding or welding to form an air-tight chamber between the two metal plates, and the air-tight chamber has a capillary structure and a working liquid. Furthermore, the efficiency of heat conduction is accelerated by the principle of vapor-liquid circulation.

Generally, the temperature equalizing plate is a structure formed by stacking and welding two metal materials such as copper, aluminum, stainless steel, titanium, or magnesium. However, if it is a combination of different materials, it cannot be passed through ordinary welding or diffusion. The joining method is combined, so people who are familiar with the technology combine the two plates of different materials by laser welding. When laser welding is performed, the material must be avoided by passing in an inert gas or vacuum environment. If pollution or oxidation reaction occurs, laser welding is performed by setting a laser welding tool machine with a closed chamber. The vacuum environment provided in the closed chamber or the environment in which inert gas is passed can solve the pollution or The generation of oxidation reaction, but if the workpiece is too large in a closed chamber, it cannot be processed, so although the disadvantages of the laser welding part are improved, the problem of excessively large workpiece size still needs to be improved.

Therefore, in order to solve the disadvantages of the above-mentioned conventional technology, the main object of the present invention is to provide a fixture for laser welding.

In order to achieve the above-mentioned object, the present invention provides a jig structure for a heat dissipation unit, comprising: a body; the body has a cavity inside and a top on the upper side, and the top has at least one opening, The open port is provided with at least a silicon dioxide layer, and the chamber is in a vacuum airtight or positive pressure inert atmosphere. Through the present invention, it is possible to provide an air-tight environment for laser welding of the workpiece to be laser welded, regardless of the choice of vacuum environment or an atmosphere of inert gas, which can not only prevent the workpiece from being contaminated during laser welding, but also Can prevent the occurrence of oxidation reactions.

Therefore, only suitable fixtures are selected for the size of the workpiece. If the use flexibility is large, the flexibility of laser processing can be increased.

1‧‧‧ Ontology

1a‧‧‧Part I

1b‧‧‧Part II

11‧‧‧ chamber

12‧‧‧Top

13‧‧‧ open mouth

14‧‧‧ Silicon dioxide layer

141‧‧‧Anti-reflective film

15‧‧‧channel

2‧‧‧ Cooling unit fixture

3‧‧‧laser processing tools

31‧‧‧Workbench

4‧‧‧ Workpiece

Figure 1 is an exploded perspective view of the structure of the heat sink unit fixture of the present invention; Figure 2 is a sectional view of the structure of the heat sink unit fixture of the present invention; and Figure 3 is a schematic view of the structure of the heat sink unit fixture of the present invention.

The above-mentioned object of the present invention and its structural and functional characteristics will be described based on the preferred embodiments of the drawings.

Please refer to FIGS. 1 and 2 for a three-dimensional exploded and combined sectional view of the structure of the heat dissipation unit fixture of the present invention. As shown in the figure, the structure of the heat dissipation unit fixture includes: a body 1; the inside of the body 1 There is a chamber 11 and a top 12 on the upper side, and the top 12 has at least one open port 13 provided with at least one silicon dioxide layer 14. The chamber 11 is vacuum-tight and air-tight. The main body 1 is made of aluminum or stainless steel.

The body 1 has a first portion 1a and a second portion 1b. The first and second portions 1a and 1b are correspondingly combined and collectively define the cavity 11. The top portion 12 is located on one side of the first portion 1a. All The main body 1 has at least one channel 15 which is connected to the chamber 11. The channel 15 can perform any task of evacuating or introducing an inert gas.

The silicon dioxide layer 14 is quartz, and the average transmittance of light from the silicon dioxide layer 14 at 260 nm to 1100 nm is 92%. Furthermore, an anti-reflection film 141 can be provided on both surfaces of the silicon dioxide layer 14, and the transmittance of the silicon dioxide layer 14 having the anti-reflection film 141 can reach 98% at a light wavelength of 400 nm to 1100 nm. ~ 100%, which can increase the penetration of the laser.

Please refer to FIG. 3, which is a schematic diagram of the structure of the heat dissipation unit fixture of the present invention. As shown in the figure, when performing laser welding, the heat dissipation unit fixture 2 is first placed on the workbench 31 of the laser processing machine 3. The workpiece 4 to be laser-welded is placed in the heat sink unit fixture 2 and the heat sink unit fixture 2 is tightly closed, and it can be selected to pass through the channel 15 of the heat sink unit fixture 2 Vacuum or inert gas (argon) is introduced to protect it from pollution and oxidation reaction, and laser welding or laser processing is started through the laser head 32 provided above the heat sink unit fixture 2. The laser The laser beam 33 generated by the head 32 penetrates through the silicon dioxide layer 14 provided on the upper side of the body 1 and enters the heat dissipation unit jig 2 to perform laser processing or laser welding on the workpiece 4. The silicon oxide layer 14 uses quartz, so its laser transmittance can be at least 92% or higher. Compared with laser processing and laser welding, the power loss is low. At the same time, it can maintain a vacuum-tight or inert gas-protected processing environment.

The heat dissipation unit fixture structure of the present invention mainly increases the flexibility of laser processing or laser welding work. The size of the heat dissipation unit fixture is selected according to the size of the workpiece, thereby saving manufacturing costs and increasing the flexibility of laser processing or laser welding. .

Claims (7)

A heat dissipating unit jig structure includes: a body having a cavity inside the body and a top on the top side, and the top has at least one opening, and the opening is provided with at least a silicon dioxide layer, The chamber is vacuum-tight, to avoid material oxidation or contamination, and the workpiece is too large and the chamber cannot be processed. According to the heat dissipation unit fixture structure described in the first item of the patent application scope, wherein the average transmittance of the light of the silicon dioxide layer at 260 nm to 1100 nm is 92%. The heat dissipation unit jig structure according to item 1 of the scope of the patent application, wherein the silicon dioxide layer is quartz. The heat dissipating unit jig structure as described in item 1 of the scope of patent application, wherein the system is made of any one of aluminum or stainless steel. The heat dissipating unit jig structure according to item 1 of the scope of the patent application, wherein the body has at least one channel, the channel is connected to the chamber, and the channel can perform any task of vacuuming or inert gas. . The heat dissipation unit jig structure according to item 1 of the scope of patent application, wherein the body has a first part and a second part, and the first and second parts are correspondingly combined and collectively define the cavity and the top Located on one side of the first part. The heat dissipation unit jig structure according to item 1 of the scope of the patent application, wherein an anti-reflection film is provided on both sides of the silicon dioxide layer, and the silicon dioxide layer with the anti-reflection film has a light wavelength of 400 nm to 1100 nm Its penetration rate can reach 98% ~ 100%.