Self-adaptive elastic suction nozzle

Abstract

The utility model relates to a self-adaptive elastic suction nozzle. Belongs to the technical field of semiconductor packaging equipment. The suction nozzle mainly solves the problems that an existing suction nozzle of an integrated structure is prone to causing material damage and not easy to separate after vacuum release. The device is mainly characterized by comprising a suction cup, a fixing shaft, a limiting disc, a spring and a steel ball, the fixing shaft is provided with an axial through hole, and the lower end opening of the fixing shaft is of a closing-up structure. The suction cup is installed at the bottom end of the fixing shaft. The spring is sleeved in the middle of the fixing shaft, the lower end is fixedly connected with the fixing shaft, and the upper end is fixedly connected with the limiting disc embedded in the top end of the fixing shaft; and the steel ball is arranged in the axial through hole of the fixed shaft. The suction nozzle has the advantages of being simple in structure, reasonable in design, free of damage to materials and capable of assisting in separating the materials from the suction nozzle, and is mainly used for chip mounting packaging of semiconductor chips by a chip mounter.

Description

Technical Field

[0001] The utility model belongs to the technical field of semiconductor packaging equipment, and in particular relates to an adaptive elastic suction nozzle. Background Art

[0002] Currently, in the packaging process of semiconductor production, chip placement machines are commonly used to place chips or other materials, which requires the use of vacuum nozzles to absorb the materials. However, existing vacuum nozzles are generally integrated structures without a buffer structure during the suction process. When the suction height varies, it can easily damage the material. Furthermore, existing nozzles can become sticky after repeated use. When the sticky nozzle continues to absorb material, it will adhere to the material, making it difficult to separate after the vacuum is released. Utility Model Content

[0003] The purpose of the present invention is to provide a new adaptive elastic suction nozzle to address the above shortcomings, so as to solve the problems in the prior art that the one-piece suction nozzle has no elastic buffer structure, is prone to damage to the material, and is difficult to separate from the material.

[0004] The technical solution of the utility model is: an adaptive elastic suction nozzle, including a suction cup and a fixed shaft, which is characterized in that: it also includes a limit plate, a spring and a steel ball; the fixed shaft is provided with an axial through hole, and the lower end is a closed structure; the suction cup is installed at the bottom end of the fixed shaft; the spring is sleeved on the middle part of the fixed shaft, the lower end is fixedly connected to the fixed shaft, and the upper end is fixedly connected to the limit plate embedded in the top end of the fixed shaft; the steel ball is installed in the axial through hole of the fixed shaft.

[0005] In the technical solution of the present invention, a matching step buckle is provided between the outer portion of the bottom end of the fixed shaft and the inner wall of the suction cup; the fixed shaft and the suction cup are fitted together.

[0006] The step buckle of the fixed shaft in the technical solution of the utility model is composed of a step shaft and a conical platform at the bottom end of the step shaft.

[0007] The limiting disk in the technical solution of the present invention is in the shape of a disk with a circular through hole and is in sliding cooperation with the fixed shaft.

[0008] In the technical solution of the present invention, the outer diameter of the top end of the fixed shaft is slightly smaller than the inner diameter of the limiting disk, and the limiting disk can move freely up and down relative to the fixed shaft.

[0009] In the technical solution of the present invention, the outer diameter of the steel ball is slightly smaller than the inner diameter of the fixed shaft, and can move freely inside the fixed shaft; the outer diameter of the steel ball is larger than the inner diameter of the bottom end of the fixed shaft.

[0010] When the steel ball in the technical solution of the present invention falls on the closing portion of the bottom end of the fixed shaft, the bottom end of the steel ball is flush with the bottom end of the suction cup.

[0011] In the technical solution of the present invention, a circular boss for mounting a spring is provided on the fixed shaft.

[0012] In the technical solution of the present invention, a step buckle is provided at the bottom end of the fixed shaft; and the bottom surface of the circular boss is connected to the step buckle.

[0013] In the technical solution of the present invention, the suction cup is in a trumpet-shaped or barrel-shaped shape and is made of soft rubber; the fixed shaft is made of a rigid material or a ceramic material; and the spring and the steel ball are made of a rigid material.

[0014] The advantages of the utility model are: simple structure and reasonable design; by adding a spring structure, it can automatically compensate and adjust the suction height without causing damage to the material, solving the problem that the integrated suction nozzle is prone to material damage due to the lack of an elastic buffer structure; by adding internal steel balls, after the vacuum is released, the internal steel balls naturally fall due to gravity, which can assist in separating the material from the suction nozzle, solving the problem that the material adheres and is difficult to separate; the suction cup can tightly adhere to various special-shaped surfaces and is suitable for sucking all kinds of materials.

[0015] The utility model is mainly used for chip mounting machines to carry out chip packaging of semiconductor chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] In the figure: 1-suction cup; 2-fixed shaft; 3-limiting plate; 4-spring; 5-steel ball. DETAILED DESCRIPTION

[0018] The following is a complete description of the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Any other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0019] The following describes the implementation of the present invention with reference to examples.

[0020] like Figure 1 As shown in FIG, an embodiment of an adaptive elastic suction nozzle of the present invention is composed of a suction cup 1, a fixed shaft 2, a limiting disc 3, a spring 4 and a steel ball 5.

[0021] The fixed shaft 2 is generally cylindrical in shape, with a circular axial through-hole and a closed lower end. Made of steel or ceramic for enhanced wear resistance, the fixed shaft 2 features a stepped buckle at its bottom. This buckle consists of a stepped shaft and a tapered platform at its base, which faces the closed lower end. A circular boss is also externally mounted on the fixed shaft 2, the bottom surface of which abuts the stepped buckle.

[0022] The suction cup 1 is in a trumpet shape or a barrel shape and is made of soft rubber and is suitable for various special-shaped surfaces. The inner wall of the suction cup 1 is provided with a step buckle, which is composed of a step wall and a tapered wall at the bottom of the step wall.

[0023] The spring 4 is sleeved on the middle part of the fixed shaft 2 and is located on the circular boss. The lower end of the spring 4 is fixedly connected to the circular boss. The spring 4 is made of a rigid material and has good elasticity.

[0024] The limiting plate 3 is a disc with a circular through-hole, and it slidably engages the fixed shaft 2. The outer diameter of the top of the fixed shaft 2 is slightly smaller than the inner diameter of the limiting plate 3, allowing the limiting plate 3 to move freely up and down relative to the fixed shaft 2. The upper end of the spring 4 is fixedly connected to the limiting plate 3, which is inserted into the top of the fixed shaft 2.

[0025] The outer diameter of the steel ball 5 is slightly smaller than the inner diameter of the fixed shaft 2, allowing it to move freely inside the fixed shaft 2. The outer diameter of the steel ball 5 is larger than the inner diameter of the bottom end of the fixed shaft 2. When the steel ball 5 lands on the bottom end of the fixed shaft 2, the bottom end of the steel ball 5 is flush with the bottom end of the suction cup 1. The steel ball is made of rigid material.

[0026] The stepped buckle on the outside of the bottom end of the fixed shaft 2 mates with the stepped buckle on the inner wall of the suction cup 1. The suction cup 1 is installed on the outside of the bottom end of the fixed shaft 2 and fits snugly into the suction cup 1. The fixed shaft 2 is placed inside the limit plate 3 and can move freely up and down. The spring 4 acts as a buffer during the suction nozzle's upward and downward suction process. The steel ball 5 is placed inside the through hole of the fixed shaft 2 and can move freely inside the fixed shaft 2. At the same time, the bottom of the fixed shaft 2 is designed to be closed, so the steel ball 5 cannot fall out completely.

[0027] During use, the soft rubber suction cup 1 adheres tightly to various irregular surfaces, making it suitable for sucking up a wide range of materials. The spring 4 automatically adjusts the suction height to minimize damage to the material. After the vacuum is released, the steel ball 5 inside naturally falls due to gravity, assisting in separating the material from the suction nozzle.

[0028] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent replacement, equivalent change, or modification to the above embodiment that does not depart from the content of the present invention and is based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An adaptive elastic suction nozzle, comprising a suction cup (1) and a fixed shaft (2), characterized in that: It also includes a limit plate (3), a spring (4) and a steel ball (5); the fixed shaft (2) is provided with an axial through hole, and the lower end is a closed structure; the suction cup (1) is installed on the bottom end of the fixed shaft (2); the spring (4) is sleeved on the middle part of the fixed shaft (2), the lower end is fixedly connected to the fixed shaft (2), and the upper end is fixedly connected to the limit plate (3) sleeved on the top end of the fixed shaft (2); the steel ball (5) is installed in the axial through hole of the fixed shaft (2).

2. The adaptive elastic suction nozzle according to claim 1, characterized in that: A matching step buckle is provided between the outside of the bottom end of the fixed shaft (2) and the inner wall of the suction cup (1); the fixed shaft (2) and the suction cup (1) are fitted together.

3. The adaptive elastic suction nozzle according to claim 2, characterized in that: The step buckle of the fixed shaft (2) is composed of a step shaft and a conical platform at the bottom end of the step shaft.

4. The adaptive elastic suction nozzle according to claim 1, 2 or 3, characterized in that: The limiting disk (3) is in the shape of a disk with a circular through hole and is in sliding engagement with the fixed shaft (2).

5. The adaptive elastic suction nozzle according to claim 4, characterized in that: The outer diameter of the top end of the fixed shaft (2) is slightly smaller than the inner diameter of the limiting plate (3), and the limiting plate (3) can move freely up and down relative to the fixed shaft (2).

6. An adaptive elastic suction nozzle according to any one of claims 1-3 and 5, characterized in that: The outer diameter of the steel ball (5) is slightly smaller than the inner diameter of the fixed shaft (2), and the steel ball (5) can move freely inside the fixed shaft (2); the outer diameter of the steel ball (5) is larger than the inner diameter of the bottom end of the fixed shaft (2).

7. The adaptive elastic suction nozzle according to claim 6, characterized in that: When the steel ball (5) falls on the bottom end of the fixed shaft (2), the bottom end of the steel ball (5) is flush with the bottom end of the suction cup (1).

8. An adaptive elastic suction nozzle according to any one of claims 1-3, 5, and 7, characterized in that: A circular boss for mounting a spring (4) is provided on the fixed shaft (2).

9. The adaptive elastic suction nozzle according to claim 8, characterized in that: The bottom end of the fixed shaft (2) is provided with a step buckle; the bottom surface of the circular boss is adjacent to the step buckle.

10. An adaptive elastic suction nozzle according to any one of claims 1-3, 5, 7, and 9, characterized in that: The suction cup (1) is in a trumpet-shaped or barrel-shaped shape and is made of soft rubber; the fixed shaft (2) is made of a rigid material or a ceramic material; and the spring (4) and the steel ball (5) are made of a rigid material.

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