Supporting seat capable of reducing surface abrasion

Abstract

The embodiment of the utility model discloses a supporting seat capable of reducing surface abrasion, which comprises a base and at least one boss, the boss is connected on the base, the top surface of the boss is rectangular so as to stably support a substrate, the four vertex angles of the boss are respectively provided with a clearance groove, the clearance groove is provided with a top end opening and a lateral opening, and the top end opening and the lateral opening are communicated with each other. The supporting seat is used for avoiding the position, where the substrate is prone to warping, of the substrate and reducing abrasion between the boss and the substrate, the supporting seat is used for stably supporting the substrate, meanwhile, friction damage between the boss and the substrate can be effectively reduced, the service life of the boss can be prolonged, and the product quality of the substrate can be improved.

Description

Technical Field

[0001] The utility model relates to mechanical equipment technology, in particular to a support seat capable of reducing surface wear. Background Art

[0002] With the continuous innovation of mobile phone camera technology, the types and technologies of cameras are also developing rapidly. As a result, the difficulty of camera manufacturing process has increased. In order to adapt to the development of the market, it is necessary to continuously develop the production technology of high-end cameras. Among them, flip chip welding technology is a technology that flips the chip that has been loaded with gold balls and then ultrasonically welds it to a ceramic substrate. This process can make the camera thinner, more powerful, and more reliable. It is the core technology of current camera assembly. During the flip chip welding process, the substrate needs to be placed on the boss of the mounting platform, and then the chip is welded to the substrate to complete the welding operation. However, during the welding process, wear is prone to occur between the boss and the substrate. This wear not only affects the success rate of welding the chip, but also shortens the service life of the boss. Utility Model Content

[0003] In view of this, an object of the utility model is to provide a support seat with reduced surface wear, which can effectively reduce the wear between the boss and the substrate, improve the chip quality and extend the service life of the boss.

[0004] An embodiment of the utility model provides a support seat for reducing surface wear, the support seat includes a base and at least one boss, the boss is connected to the base, the top surface of the boss is rectangular, and air avoidance grooves are provided at the four top corners of the boss, and the air avoidance grooves have a top opening and a side opening.

[0005] Furthermore, the depth of the air avoidance groove is 0.3 mm.

[0006] Furthermore, the boss includes a supporting portion and a connecting portion which are sequentially arranged up and down, the supporting portion is a rectangular parallelepiped, and the size of the supporting portion is smaller than the size of the connecting portion.

[0007] Furthermore, at least one connecting groove is provided on the base, the connecting groove matches the shape of the connecting portion, and the connecting portion is fixed in the connecting groove by welding.

[0008] Furthermore, the welding method is copper brazing.

[0009] Furthermore, the top surface of the connecting portion is higher than the top surface of the base.

[0010] Furthermore, the boss is a tungsten steel boss.

[0011] Furthermore, a workpiece positioning column is arranged on the base.

[0012] Furthermore, the base is a stainless steel base.

[0013] Furthermore, a plurality of bosses are arranged on the base, the plurality of bosses are arranged at even intervals, and a boss in an upper row / column is located between two bosses in a lower row / column.

[0014] An embodiment of the utility model provides a support seat for reducing surface wear, the support seat includes a base and at least one boss, the boss is connected to the base, the top surface of the boss is rectangular to stably support the substrate, and air avoidance grooves are provided at the four top corners of the boss, the air avoidance grooves have a top opening and a side opening, which are used to avoid positions where the substrate is prone to warping and reduce wear between the boss and the substrate. The support seat is used to stably support the substrate, and at the same time can effectively reduce friction damage between the boss and the substrate, which helps to extend the service life of the boss and improve the product quality of the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0016] Figure 1 It is a cross-sectional schematic diagram of a boss and a base in an embodiment of the utility model;

[0017] Figure 2 It is a top view of the boss of the embodiment of the utility model;

[0018] Figure 3 It is a top view of the support base of the embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 10-base; 11-connecting groove; 12-workpiece positioning column; 20-boss; 21-avoidance groove; 22-supporting part; 23-connecting part. DETAILED DESCRIPTION

[0021] The present application is described below based on embodiments, but the present application is not limited to these embodiments. In the detailed description of the present application below, some specific details are described in detail. It is possible for those skilled in the art to fully understand the present application without the description of these details. In order to avoid confusing the essence of the present application, known methods, processes, flows, components and circuits are not described in detail.

[0022] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0023] Unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0025] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0026] An embodiment of the present application provides a support seat for reducing surface wear, wherein the support seat includes a base 10 and at least one boss 20 . Figure 1 is a cross-sectional view between a boss 20 and a base 10, Figure 2 is a top view of the boss 20, Figure 3 2 is a top view of the overall structure of this embodiment. Figure 1 , the boss 20 is connected to the base 10 and is used to place and support the substrate to be processed. The top surface of the boss 20 is rectangular, and the four corners of the boss 20 are provided with air avoidance grooves 21. When the substrate is placed on the boss 20, the position of the air avoidance groove 21 corresponds to the four corners of the substrate. The air avoidance groove 21 can avoid the position where the substrate is prone to warping, thereby reducing the friction damage between the substrate and the boss 20, which helps to improve product quality and extend the service life of the boss 20.

[0027] When placing the substrate, the carrier plate carrying the substrate moves to the top of the support seat and positions the substrate and the boss 20. After the substrate and the boss 20 are positioned, the carrier plate moves downward. During the downward movement, the substrate falls on the raised boss 20, and the carrier plate continues to descend until it falls on the base 10, thereby separating the substrate from the carrier plate to facilitate processing of the substrate.

[0028] Reference Figure 3, a plurality of bosses 20 are arranged on the base 10, and the plurality of bosses 20 are arranged evenly at intervals, and the bosses 20 of the upper row / column are located between the bosses 20 of the lower row / column. A substrate is carried on a boss 20 to reduce unnecessary contact friction between the boss 20 and the substrate. The bosses 20 are arranged at intervals to avoid interference between multiple substrates during processing. It is understandable that the arrangement of the bosses 20 is the same as the arrangement of the substrates on the carrier to ensure that the substrates can be correctly placed on the bosses 20. Therefore, according to the structure of different carriers, the bosses 20 can also be arranged and fixed in other forms, such as matrix arrangement.

[0029] Reference Figure 1 The boss 20 includes a support portion 22 and a connection portion 23 which are sequentially arranged in the upper and lower parts. The support portion 22 is a rectangular parallelepiped, and the size of the support portion 22 is smaller than the size of the connection portion 23. The air avoidance groove 21 is arranged at the top of the support portion 22, and the height of the support portion 22 is greater than the depth of the air avoidance groove 21. The connection portion 23 is connected and fixed to the base 10.

[0030] Reference Figure 1 and Figure 2 , the air-avoiding groove 21 has a top opening and a side opening, and the depth of the air-avoiding groove 21 is 0.3mm. The air-avoiding groove 21 is equivalent to digging out the four corners of the boss 20, and can provide sufficient deformation space for the substrate. During the welding process, the four corners of the substrate are prone to warping under the influence of processing stress and temperature. The air-avoiding groove 21 can provide additional space for the substrate, allowing the substrate to have a certain deformation space during the welding process. This spatial compensation can reduce the warping of the substrate caused by stress concentration, thereby reducing the friction damage caused by the warping of the substrate and the boss 20, and improving the success rate of welding between the substrate and the chip. The depth of the air-avoiding groove 21 can avoid affecting the hardness and shape of the boss 20 while meeting the required depth of the air-avoiding groove 21 as much as possible, ensuring that the boss 20 can stably support the substrate.

[0031] Optionally, the transverse cross-sectional shape of the boss 20 may also be other shapes, such as an octagon or a hexagon, etc. It is understandable that when the cross-sectional shape of the boss 20 is an octagon or a hexagon, the hypotenuse of the boss 20 may correspond to the position where the substrate is prone to warping, thereby replacing the avoidance groove 21 to avoid the substrate.

[0032] Reference Figure 1 At least one connecting groove 11 is provided on the base 10, and the connecting portion 23 is fixed in the connecting groove 11 by welding. The top surface of the connecting portion 23 is higher than the top surface of the base 10, that is, the height of the connecting portion 23 is greater than the depth of the connecting groove 11, which facilitates welding and fixing the gap between the connecting portion 23 and the base 10. Figure 3The base 10 is also provided with a workpiece positioning column 12. Before placing the substrate, the carrier plate and the support seat can be quickly positioned through the workpiece positioning column 12 to ensure that the positions of the substrate and the boss 20 correspond to each other, which is convenient for subsequent processing.

[0033] Furthermore, the welding method between the connection part 23 and the base 10 is copper brazing. After melting, the brazing material of copper brazing can flow into the smaller gap between the connection part 23 and the base 10, forming a strong metallurgical bond, thereby achieving a stable connection between the connection part 23 and the base 10. In addition, the melting point of the brazing material of copper brazing is lower than the melting point of the material of the boss 20 and the base 10, so the boss 20 and the base 10 will not be melted during the welding process of the boss 20 and the base 10. This welding method causes less thermal deformation to the boss 20 and the base 10, which helps to maintain the stability of the shape of the boss 20.

[0034] In addition, the boss 20 in this embodiment is a tungsten steel boss, and the base 10 is a stainless steel base. The boss 20 and the base 10 are made of different materials, which on the one hand enhances the strength of the boss 20, and on the other hand can effectively control and reduce the production cost of the support base.

[0035] Tungsten steel has high strength and high wear resistance, so the tungsten steel boss can effectively reduce the damage and debris caused by friction with the substrate during welding, improve the welding success rate and improve product quality. Tungsten steel also has heat resistance and stability. Therefore, during long-term welding operations, the tungsten steel boss can also maintain a high hardness and extend the service life of the boss 20. In addition, the tungsten steel boss has a good heat transfer effect, which can keep the substrate at a certain temperature and achieve a better welding effect.

[0036] The support seat for reducing surface wear in this embodiment provides a certain deformation space for the substrate by setting an air-avoiding groove on the boss, thereby reducing the warping degree of the substrate, effectively improving product quality, and effectively reducing the contact wear between the substrate and the boss, and extending the service life of the boss. The boss is also made of tungsten steel. The high strength and wear resistance of the tungsten steel boss can effectively improve the performance of the boss and reduce production costs.

[0037] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A support seat for reducing surface wear, characterized in that: The support seat comprises a base (10) and at least one boss (20), wherein the boss (20) is connected to the base (10), the top surface of the boss (20) is rectangular, and four top corners of the boss (20) are each provided with a clearance groove (21), and the clearance groove (21) has a top opening and a side opening.

2. The support seat for reducing surface wear according to claim 1, characterized in that: The depth of the air-avoiding groove (21) is 0.3 mm.

3. The support seat for reducing surface wear according to claim 1, characterized in that: The boss (20) comprises a supporting portion (22) and a connecting portion (23) which are arranged in sequence up and down; the supporting portion (22) is a rectangular parallelepiped, and the size of the supporting portion (22) is smaller than the size of the connecting portion (23).

4. The support seat for reducing surface wear according to claim 3, characterized in that: At least one connecting groove (11) is provided on the base (10), the connecting groove (11) matches the shape of the connecting portion (23), and the connecting portion (23) is fixed in the connecting groove (11) by welding.

5. The support seat for reducing surface wear according to claim 4, characterized in that: The welding method is copper brazing.

6. The support seat for reducing surface wear according to claim 3, characterized in that: The top surface of the connecting portion (23) is higher than the top surface of the base (10).

7. The support seat for reducing surface wear according to claim 1, characterized in that: The boss (20) is a tungsten steel boss.

8. The support seat for reducing surface wear according to claim 1, characterized in that: A workpiece positioning column (12) is provided on the base (10).

9. The support seat for reducing surface wear according to claim 1, characterized in that: The base (10) is a stainless steel base.

10. The support seat for reducing surface wear according to claim 1, characterized in that: A plurality of bosses (20) are arranged on the base (10), the plurality of bosses (20) are arranged at even intervals, and the bosses (20) in an upper row / column are located between two bosses (20) in a lower row / column.

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