Modularized clamp for bonding machine

Abstract

The utility model discloses a modularized clamp for a bonding machine, which comprises a base, a plurality of pressing plates, a plurality of first limiting blocks and a plurality of second limiting blocks, a station platform is protruded on the base, the pressing plates can be arranged on the station platform, a plurality of first screw holes are arranged on the pressing plates, the plurality of first screw holes are distributed in a square matrix, auxiliary alignment patterns are printed on the pressing plates, and the second limiting blocks are arranged on the base. The auxiliary alignment patterns are grids with the circle centers of all the first screw holes as the centers of all the unit grids, the hole diameters of the first screw holes in different pressing plates are the same, and the side lengths of square matrix units formed by the first screw holes are different. The number and the positions of the first limiting blocks and the second limiting blocks are adjusted, the device is applied to bonding proofing of packaging substrates of different shapes and sizes, the pressure borne by the packaging substrates is reduced, therefore, a protection pad does not need to be arranged on the back faces of the packaging substrates, disassembly, assembly and replacement are convenient and fast, the working efficiency of bonding proofing in the early stage of chip packaging is improved, and the production cost is reduced. And the production cost and the material waste are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chip packaging, and more specifically, to a modular fixture for a bonding machine. Background Art

[0002] Bonding, as an important process in the chip packaging technology, refers to installing and fixing the chips on the wafer that has been cut onto the packaging substrate. The equipment used is a bonding machine, and the bonding machine is provided with a fixture for fixing the packaging substrate. As Figure 1 shown, in the prior art, the fixture for the bonding machine used for bonding proofing in the early stage of chip packaging includes a bottom plate 17, a plurality of plastic sheet parts 18 and a plurality of metal frame parts 19. The plastic sheet parts 18 and the metal frame parts 19 are arranged in pairs, both of which match the shape of the packaging substrate and are both connected and fixed to the bottom plate 17 by screws. The metal frame part 19 is located at the uppermost part and is used to press the periphery of the packaging substrate tightly. The plastic sheet part 18 is located between the packaging substrate and the base 17 and is used to buffer and protect the back surface of the packaging substrate. This fixture not only has cumbersome disassembly and assembly, and frequent disassembly and assembly easily cause the deformation or even damage of the packaging substrate, resulting in the loss of its accuracy or even the scrapping of the whole board, but also is only applicable to a single model of packaging substrate. When the packaging substrate is changed, the entire fixture needs to be replaced, and the plastic sheet parts 18 and the metal frame parts 19 with the required shape and size need to be redesigned and manufactured, and holes need to be drilled again on the new bottom plate 17, with high costs and low efficiency. Summary of the Utility Model

[0003] In order to overcome the above deficiencies of the prior art, the utility model provides a modular fixture for a bonding machine, which adopts a modular design, is convenient and fast for disassembly, replacement, and can be applied to the bonding proofing of packaging substrates with different shapes and sizes.

[0004] To achieve the above object, the technical solution adopted by the utility model to solve its technical problems is that the modular fixture for a bonding machine includes a base, a plurality of pressing plates, a plurality of first limiting blocks and a plurality of second limiting blocks. A working platform protrudes from the base, and the pressing plates can be installed on the working platform. A plurality of first screw holes are opened on the pressing plates, and the plurality of first screw holes are arranged in a square matrix. An auxiliary alignment pattern is printed on the pressing plates. The auxiliary alignment pattern is a grid with the centers of all the first screw holes as the centers of all the unit grids. The diameters of the first screw holes in different pressing plates are the same, and the side lengths of the square matrix units formed by the first screw holes are different. The first limiting block is in a cuboid shape, and a first strip-shaped hole is opened thereon. The second limiting block is generally in a cuboid shape, and a second strip-shaped hole is opened thereon. One end of the second limiting block extends outwards upwards with a pressing block, and the end of the pressing block inclines downwards. The working platform, the first limiting block and the second limiting block are all detachably connected and fixed to the pressing plates by screws.

[0005] In some embodiments, the surface sizes of the working platform and the pressing plates are the same and can be completely overlapped.

[0006] In some embodiments, a clamping groove is formed on the workbench, and a clamping block protrudes from the lower wall of the pressing plate. The clamping groove and the clamping block are matched with each other and can be completely clamped together.

[0007] In some embodiments, a plurality of second screw holes are formed around the workbench, and a plurality of third screw holes are formed around the pressing plate. The plurality of second screw holes and the plurality of third screw holes are matched one by one.

[0008] In some embodiments, a plurality of marking lines are prominently shown on the grid, and the plurality of marking lines divide the grid into a plurality of rectangular areas.

[0009] In some embodiments, the marking lines are thickened and prominently shown on the grid.

[0010] In some embodiments, the marking lines are colored and prominently shown on the grid.

[0011] In some embodiments, the sizes of the plurality of rectangular areas are the same.

[0012] In some embodiments, the width of the first strip hole and the width of the second strip hole are both the same as the aperture of the first screw hole.

[0013] In some embodiments, the length of the first strip hole and the length of the second strip hole are both not less than twice the side length of the largest square matrix unit formed by the first screw holes in the plurality of pressing plates.

[0014] Due to the application of the above technical solutions, the present utility model has the following beneficial effects compared with the prior art:

[0015] The present utility model adopts a modular design, can adjust the quantity and position of the first limiting block and the second limiting block by replacing different pressing plates, and is applied to the bonding proofing of packaging substrates with different shapes and sizes. It also reduces the pressure on the packaging substrate. Therefore, there is no need to set a protection pad on the back of the packaging substrate, and the disassembly and replacement are convenient and fast, improving the working efficiency of the bonding proofing in the early stage of chip packaging and reducing the production cost and material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of a jig for a bonding machine used for bonding proofing in the early stage of chip packaging in the prior art.

[0017] Figure 2 It is a top view of the base and the pressing plate in the first embodiment of the modular jig for a bonding machine proposed by the present utility model.

[0018] Figure 3 It is a top view of the first embodiment of the modular jig for a bonding machine proposed by the present utility model when loading a packaging substrate.

[0019] Figure 4Stereogram of the base in the first embodiment of the modular fixture for a bonding machine proposed by the present utility model.

[0020] Figure 5 Front view of the pressure plate in the first embodiment of the modular fixture for a bonding machine proposed by the present utility model.

[0021] Figure 6 Stereogram of the first limit block in the first embodiment of the modular fixture for a bonding machine proposed by the present utility model.

[0022] Figure 7 Stereogram of the second limit block in the first embodiment of the modular fixture for a bonding machine proposed by the present utility model.

[0023] In the figure: 1 - base; 2 - pressure plate; 3 - first limit block; 4 - second limit block; 5 - working station table; 6 - first screw hole; 7 - auxiliary alignment pattern; 8 - first strip hole; 9 - second strip hole; 10 - pressing block; 11 - card slot; 12 - card block; 13 - second screw hole; 14 - third screw hole; 15 - marking line; 16 - rectangular area; 17 - bottom plate; 18 - plastic sheet; 19 - metal frame; 20, fourth screw hole. Specific implementation mode

[0024] The following combines specific embodiments to further elaborate on the content of the present utility model:

[0025] Combined with Figures 2 to 7 , the first embodiment of the modular fixture for a bonding machine proposed by the present utility model is used to load a packaging substrate in a bonding machine during the bonding proofing in the early stage of chip packaging. It includes a base 1, a pressure plate 2, a number of first limit blocks 3 and a number of second limit blocks 4. A working station table 5 protrudes on the base 1. The lower part of the base 1, the working station table 5 and the pressure plate 2 are all cuboids. The pressure plate 2 is installed on the working station table 5. A number of first screw holes 6 are opened on the pressure plate 2, and the number of first screw holes 6 is distributed in a square matrix. An auxiliary alignment pattern 7 is printed on the pressure plate 2. The auxiliary alignment pattern 7 is a grid with the centers of all the first screw holes 6 as the centers of all unit grids. The first limit block 3 is a cuboid, and a first strip hole 8 is opened thereon. The second limit block 4 is generally a cuboid, and a second strip hole 9 is opened thereon. One end of the second limit block 4 extends outwards upwards with a pressing block 10, and the end of the pressing block 10 inclines downwards. The working station table 5, the first limit block 3 and the second limit block 4 are all detachably connected and fixed to the pressure plate 2 by screws.

[0026] In the first embodiment and other embodiments of the present utility model:

[0027] The base 1 is simultaneously equipped with a plurality of pressing plates 2 (only one pressing plate 2 mounted on the base 1 in the first embodiment is shown in the figure). The plurality of pressing plates 2 are replaceably mounted on the workbench 5. The apertures of the first screw holes 6 in different pressing plates 2 are the same, and the side lengths of the square matrix units formed by the first screw holes 6 are different. Therefore, the side lengths of the unit grids of the auxiliary alignment pattern 7 are also different. The first limiting block 3 and the second limiting block 4 have fixed dimensions. During use, according to the size and quantity of the package substrates to be loaded (the package substrates are usually rectangular), a pressing plate 2 with an appropriate side length of the square matrix unit of the first screw hole 6 is selected, and the quantity and distribution of the first limiting block 3, the second limiting block 4 and the screws are determined. The first limiting block 3 and the pressing plate 2 are detachably connected and fixed by screws between the first strip-shaped hole 8 and the first screw hole 6. The first limiting block 3 is used to abut against the edge of the package substrate. The second limiting block 4 and the pressing plate 2 are detachably connected and fixed by screws between the second strip-shaped hole 9 and the first screw hole 6. The second limiting block 4 is used to abut against the edge of the package substrate and press the upper wall thereof through the pressing block 10. Compared with the metal frame 19 that completely presses the four sides of the package substrate in the prior art, the pressure on the package substrate is greatly reduced. Therefore, there is no need to provide a plastic sheet 18 as a protective pad on the back of the package substrate. During the above process, it can be observed whether the grid lines of the package substrate, the first limiting block 3 and the second limiting block 4 are perpendicular, parallel or overlapping with the auxiliary alignment pattern 7 so as to adjust the position. In addition, preferably, as shown in the first embodiment, a second limiting block 4 is provided on each of the four sides of a single package substrate for abutting and pressing, and a first limiting block 3 is provided on each of the two adjacent sides thereof for abutting, which can achieve a good fixing effect with fewer limiting blocks;

[0028] Preferably, as shown in the first embodiment, the surface sizes of the workbench 5 and the pressing plate 2 are the same and can be completely overlapped, which is regular and beautiful, facilitating alignment installation and unified storage;

[0029] Preferably, as shown in the first embodiment, a slot 11 is provided on the workbench 5, and a block 12 protrudes from the lower wall of the pressing plate 2. The slot 11 and the block 12 are matched with each other and can be completely engaged, which plays a limiting role on the workbench 5 and the pressing plate 2;

[0030] Preferably, as shown in the first embodiment, a plurality of second screw holes 13 are provided around the workbench 5, and a plurality of third screw holes 14 are provided around the pressing plate 2. The plurality of second screw holes 13 and the plurality of third screw holes 14 are matched one by one. The workbench 5 and the pressing plate 2 are detachably connected and fixed by screws between the second screw holes 13 and the third screw holes 14;

[0031] Preferably, as shown in the first embodiment, a plurality of fourth screw holes 20 are provided on both sides of the base 1 for fixing itself in the bonding machine by screws;

[0032] Preferably, as shown in the first embodiment, several marking lines 15 are highlighted on the grid. The several marking lines 15 divide the grid into several rectangular areas 16. In the first embodiment, the marking lines 15 are highlighted by thickening. The marking lines 15 can also be highlighted by coloring so that their own color is different from the colors of other lines in the grid. Each rectangular area 16 is a loading station for a packaging substrate. Preferably, the several rectangular areas 16 have the same size and are used for the installation and fixation of multiple packaging substrates of the same size in the same batch;

[0033] Preferably, as shown in the first embodiment, the widths of the first slot 8 and the second slot 9 are both the same as the aperture of the first screw hole 6, which is convenient for alignment and firm fixation;

[0034] Preferably, the lengths of the first slot 8 and the second slot 9 are both not less than twice the side length of the largest square matrix unit formed by the first screw holes 6 in the several pressing plates 2, so that the first limiting block 3 and the second limiting block 4 can respectively be connected to a pair of first screw holes 6 on the pressing plate 2 at the same time and be fully fixed.

[0035] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it. It cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A modular fixture for a bonding machine, characterized in that: The invention comprises a base (1), a plurality of pressing plates (2), a plurality of first limiting blocks (3) and a plurality of second limiting blocks (4); a work station (5) is protruded on the base (1); the pressing plate (2) can be installed on the work station (5); a plurality of first screw holes (6) are opened on the pressing plate (2); the plurality of first screw holes (6) are distributed in a square array; an auxiliary alignment pattern (7) is printed on the pressing plate (2); the auxiliary alignment pattern (7) is a grid with the center of all the first screw holes (6) as the center of all the unit grids; the auxiliary alignment pattern (7) in the different pressing plates (2) is a grid with the center of all the first screw holes (6) as the center of all the unit grids. The first screw holes (6) have the same apertures, and the side lengths of the square array units formed by the first screw holes (6) are different. The first limit block (3) is a rectangular parallelepiped with a first strip hole (8) formed thereon. The second limit block (4) is roughly a rectangular parallelepiped with a second strip hole (9) formed thereon. A pressure block (10) extends outward from the upper part of one end of the second limit block (4), and the end of the pressure block (10) is tilted downward. The workbench (5), the first limit block (3) and the second limit block (4) are detachably connected and fixed to the pressure plate (2) by screws.

2. The modular fixture for bonding machine according to claim 1, characterized in that: The workstation (5) and the pressing plate (2) have consistent surface dimensions and can be completely overlapped.

3. The modular fixture for bonding machine according to claim 1, characterized in that: A card slot (11) is provided on the work station (5), and a card block (12) is protruded from the lower wall of the pressure plate (2); the card slot (11) and the card block (12) match each other and can be fully engaged.

4. The modular fixture for bonding machine according to claim 1, characterized in that: A plurality of second screw holes (13) are provided on the periphery of the workstation (5), and a plurality of third screw holes (14) are provided on the periphery of the pressing plate (2), and the plurality of the second screw holes (13) and the plurality of the third screw holes (14) are matched one by one.

5. The modular fixture for bonding machine according to claim 1, characterized in that: A plurality of marking lines (15) are highlighted on the grid, and the plurality of marking lines (15) divide the grid into a plurality of rectangular areas (16).

6. The modular fixture for bonding machine according to claim 5, characterized in that: The marking line (15) is highlighted on the grid by being bolded.

7. The modular fixture for bonding machine according to claim 5, characterized in that: The marking line (15) is highlighted on the grid by being colored.

8. The modular fixture for bonding machine according to claim 5, characterized in that: The plurality of rectangular areas (16) have the same size.

9. The modular fixture for bonding machine according to claim 1, characterized in that: The width of the first strip-shaped hole (8) and the width of the second strip-shaped hole (9) are both the same as the hole diameter of the first screw hole (6).

10. The modular fixture for bonding machine according to claim 1, characterized in that: The length of the first strip hole (8) and the length of the second strip hole (9) are both not less than twice the side length of the largest square array unit formed by a plurality of the first screw holes (6) in the pressing plates (2).

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