Chip suction mechanism

Abstract

The utility model discloses a chip suction mechanism, and relates to the technical field of vacuum suction pens, the chip suction mechanism comprises a suction pen assembly, a suction pen bag and a suction cup, the suction pen assembly comprises a conical pen point, an annular limiting ring, a vent hole groove, a central column and an annular pressing groove, and the central column is matched with the annular pressing groove to limit pressing deformation of the central column. Therefore, the purpose of controlling the pressing shrinkage degree of the central column is achieved. Through the arrangement of the central column and the annular pressing grooves, the pen sucking bag is limited by the central column when being pressed and shrunk, and when the area, corresponding to the annular pressing grooves, of the pen sucking bag 2 is pressed and deformed to the inner side of the annular pressing grooves, the pen sucking bag cannot continue to be shrunk; the control of the pressing contraction degree of the suction pen bag can be realized, and the larger the contraction degree of the suction pen bag is, the larger the subsequently generated negative pressure is, so that when chips with different sizes are sucked and taken, the adsorption force can be controlled by pressing different areas of the suction pen bag.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum suction pens, in particular to a chip suction mechanism. Background Art

[0002] An IC chip is an integrated circuit formed by placing a large number of microelectronic components (transistors, resistors, capacitors, etc.) on a plastic substrate to form a chip. During the chip processing process, when the chip is manually picked up, a vacuum suction pen is generally used for picking it up. The vacuum suction pen is a small pneumatic tool that looks like a pen. Vacuum suction pens can be divided into two categories: pneumatic suction pens and manual suction pens. The manual suction pen consists of a plastic or rubber shell, a suction pen capsule, and a vacuum suction cup. By lightly pressing the suction pen capsule to generate suction, the chip can be easily picked up.

[0003] When using an existing manual suction pen, the pressing and contraction degree of the suction pen capsule is difficult to control, and it is not convenient to control the adsorption force according to chips of different sizes. Based on this, a chip suction mechanism is provided. Summary of the Invention

[0004] The purpose of the present invention is to provide a chip suction mechanism in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a chip suction mechanism, comprising a suction pen assembly, a suction pen bag, and a suction cup, wherein the suction pen assembly comprises a conical pen head, an annular limiting ring, a vent groove, a center column, and an annular pressing groove;

[0006] The central column is fixed at the center of the top of the conical pen tip, the annular pressing groove is formed on the outside of the central column, the pen suction bag covers the outside of the central column, and the bottom end of the pen suction bag is adhesively fixed to the bottom of the conical pen tip. The central column and the annular pressing groove cooperate to limit the pressing deformation of the central column, thereby achieving the purpose of controlling the pressing contraction degree of the central column;

[0007] The vent groove is opened at the top of the conical pen tip and penetrates into the inner cavity of the conical pen tip. The air is discharged through the vent groove and the bottom port of the conical pen tip through the squeezing and contraction of the center column, which is used to provide adsorption force for the inner cavity of the conical pen tip.

[0008] As a further solution of the present invention: an annular limiting ring is formed on the outer side of the bottom of the conical pen tip, and an annular groove is formed on the inner side of the suction cup. The suction cup is sleeved on the conical pen tip and the outer side of the annular limiting ring through the annular groove.

[0009] As a further solution of the present invention: a plurality of the annular pressing grooves are evenly arranged along the vertical direction, and the groove depths of the plurality of the annular pressing grooves decrease successively from top to bottom.

[0010] As a further solution of the present invention: a plurality of annular marking rings are evenly formed on the outer side of the pen suction bag along the vertical direction, and the number and positions of the annular marking rings correspond one to one with the number and positions of the annular pressing grooves.

[0011] As a further solution of the present invention: a plurality of vent slots are provided, and the plurality of vent slots are evenly distributed in a ring shape with the central column as the center.

[0012] As a further solution of the present invention: the conical pen tip, annular limiting ring, vent groove, center column, and annular pressing groove are integrally formed by injection molding, the pen suction bag and annular identification ring are integrally formed by injection molding, and the suction cup and annular card slot are integrally formed by injection molding.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] By setting a central column and an annular pressing groove, the contraction of the suction pen bag will be limited by the central column. When the area corresponding to the suction pen bag 2 and the annular pressing groove is pressed and deformed to the inside of the annular pressing, the suction pen bag can no longer contract. By setting a structure of multiple annular pressing grooves of different depths, the degree of contraction of the suction pen bag can be controlled. The greater the degree of contraction of the suction pen bag, the greater the negative pressure generated subsequently. In this way, when sucking and picking up chips of different sizes, the adsorption force can be controlled by pressing different areas of the suction pen bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a structural sectional view of the utility model;

[0017] Figure 3 It is a sectional exploded view of the present invention.

[0018] In the figure: 1. Suction pen assembly; 101. Conical pen tip; 102. Annular limiting ring; 103. Vent slot; 104. Center column; 105. Annular pressing groove; 2. Suction pen bag; 3. Annular identification ring; 4. Suction cup; 5. Annular slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1 to 3 In an embodiment of the present invention, a chip suction mechanism includes a suction pen assembly 1, a suction pen bag 2, and a suction cup 4. The suction pen assembly 1 includes a tapered pen head 101, an annular limiting ring 102, a vent groove 103, a center column 104, and an annular pressing groove 105.

[0021] The central column 104 is fixed at the center of the top of the conical pen tip 101, and the annular pressing groove 105 is formed on the outside of the central column 104. The suction pen capsule 2 covers the outside of the central column 104, and the bottom end of the suction pen capsule 2 is adhesively fixed to the bottom of the conical pen tip 101. The central column 104 cooperates with the annular pressing groove 105 to limit the pressing deformation of the central column 104, thereby achieving the purpose of controlling the pressing contraction degree of the central column 104;

[0022] A vent groove 103 is provided at the top of the conical pen tip 101 and extends through the inner cavity of the conical pen tip 101. A plurality of vent grooves 103 are provided, and the plurality of vent grooves 103 are evenly distributed in a circular pattern with the central column 104 as the center. The air is discharged through the vent grooves 103 and the bottom port of the conical pen tip 101 by the squeezing and contraction of the central column 104, thereby providing adsorption force for the inner cavity of the conical pen tip 101.

[0023] An annular limiting ring 102 is formed on the outer side of the bottom of the tapered pen tip 101, and an annular groove 5 is formed on the inner side of the suction cup 4. The suction cup 4 is sleeved on the outer side of the tapered pen tip 101 and the annular limiting ring 102 through the annular groove 5;

[0024] A plurality of annular pressing grooves 105 are evenly arranged along the vertical direction, and the groove depths of the plurality of annular pressing grooves 105 decrease sequentially from top to bottom.

[0025] In this embodiment, it should be noted that the conical pen tip 101 has a hollow structure inside and an open bottom, and the inner wall diameter of the pen suction bag 2 is larger than the outer diameter of the central column 104.

[0026] During use, the suction pen capsule 2 is pressed to deform it, so that the air inside the suction pen capsule 2 is discharged through the gap between the suction pen capsule 2 and the central column 104, the vent groove 103, and the bottom end port of the tapered pen tip 101. Then, the suction cup 4 is attached to the chip surface, and then the pressure on the suction pen capsule 2 is released. The suction pen capsule 2 returns to its initial state under the action of the restoring elastic force of its own material. At this time, negative pressure is generated inside the suction pen capsule 2, and this negative pressure is transmitted to the inside of the suction cup 4, realizing the adsorption operation of the chip. After that, the chip can be picked up and transferred;

[0027] During this process, the contraction of the suction pen capsule 2 will be limited by the central column 104 when pressed. When the area corresponding to the suction pen capsule 2 and the annular pressing groove 105 is pressed and deformed to the inside of the annular pressing groove 105, the suction pen capsule 2 can no longer contract. By setting up a plurality of annular pressing grooves 105 of different depths, the degree of contraction of the suction pen capsule 2 can be controlled. Different contraction degrees of the suction pen capsule 2 will lead to different amounts of discharged air, so the negative pressure generated subsequently will also change accordingly. That is, the greater the contraction degree of the suction pen capsule 2, the greater the negative pressure generated subsequently. In this way, when sucking and picking up chips of different sizes, the adsorption force can be controlled by pressing different areas of the suction pen capsule 2.

[0028] Please refer to Figures 1 to 3 A plurality of annular marking rings 3 are evenly formed on the outer side of the suction pen capsule 2 along the vertical direction. The number and position of the annular marking rings 3 correspond to the number and position of the annular pressing grooves 105 .

[0029] In this embodiment, the pressing area of the suction pen capsule 2 can be quickly determined by the annular marking ring 3, and different sizes of adsorption forces can be obtained by pressing the area corresponding to any annular marking ring 3 or the areas of the suction pen capsule 2 corresponding to multiple adjacent annular marking rings 3.

[0030] Please refer to Figures 1 to 3 The conical pen tip 101, the annular limiting ring 102, the vent groove 103, the center column 104, and the annular pressing groove 105 are integrally formed by the injection molding process, the pen suction bag 2 and the annular identification ring 3 are integrally formed by the injection molding process, and the suction cup 4 and the annular slot 5 are integrally formed by the injection molding process.

[0031] In this embodiment, the suction pen assembly 1 is made of plastic, the suction pen bag 2 and the suction cup 4 are made of rubber, and the entire device is divided into three parts, which are independently formed and then assembled. The overall processing process is simple and easy to promote and use.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chip suction mechanism, comprising a suction pen assembly (1), a suction pen bag (2), and a suction cup (4), characterized in that: The suction pen assembly (1) comprises a conical pen tip (101), an annular limiting ring (102), a vent groove (103), a central column (104), and an annular pressing groove (105); The central column (104) is fixed at the center position of the top of the conical pen head (101), the annular pressing groove (105) is formed on the outside of the central column (104), the pen suction bag (2) covers the outside of the central column (104), and the bottom end of the pen suction bag (2) is adhesively fixed to the bottom of the conical pen head (101), and the central column (104) and the annular pressing groove (105) are used to limit the pressing deformation of the central column (104), thereby achieving the purpose of controlling the pressing contraction degree of the central column (104); The vent groove (103) is opened at the top of the conical pen tip (101) and penetrates into the inner cavity of the conical pen tip (101). The air is discharged through the vent groove (103) and the bottom port of the conical pen tip (101) by the compression and contraction of the central column (104), thereby providing adsorption force for the inner cavity of the conical pen tip (101).

2. A chip suction mechanism according to claim 1, characterized in that: An annular limiting ring (102) is formed on the outer side of the bottom of the conical pen tip (101), and an annular clamping groove (5) is formed on the inner side of the suction cup (4). The suction cup (4) is sleeved on the outer side of the conical pen tip (101) and the annular limiting ring (102) through the annular clamping groove (5).

3. A chip suction mechanism according to claim 2, characterized in that: A plurality of the annular pressing grooves (105) are evenly arranged along the vertical direction, and the groove depths of the plurality of the annular pressing grooves (105) decrease in sequence from top to bottom.

4. A chip suction mechanism according to claim 3, characterized in that: A plurality of annular marking rings (3) are uniformly formed on the outer side of the pen suction bag (2) along the vertical direction, and the number and positions of the annular marking rings (3) correspond one-to-one to the number and positions of the annular pressing grooves (105).

5. The chip suction mechanism according to claim 1, characterized in that: A plurality of the vent slots (103) are provided, and the plurality of vent slots (103) are evenly distributed in a ring shape with the central column (104) as the center.

6. The chip suction mechanism according to claim 4, characterized in that: The conical pen tip (101), the annular limiting ring (102), the vent groove (103), the central column (104), and the annular pressing groove (105) are integrally formed by an injection molding process; the pen suction bag (2) and the annular identification ring (3) are integrally formed by an injection molding process; and the suction cup (4) and the annular slot (5) are integrally formed by an injection molding process.

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