CN215560605U

CN215560605U - PVD (physical vapor deposition) shielding jig for micro screws

Info

Publication number: CN215560605U
Application number: CN202121198050.7U
Authority: CN
Inventors: 王国伟; 王皓; 樊鹏飞; 黄鹏
Original assignee: Suzhou Fanglin Science And Technology Co ltd
Current assignee: Suzhou Fanglin Science And Technology Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-01-18
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses a PVD (physical vapor deposition) shielding jig for miniature screws, which comprises a jig main body in a circular plate shape, wherein a plurality of rings of holes distributed in a ring shape are formed in the upper surface of the jig main body along the circumferential direction, and the holes on adjacent rings are distributed in a staggered manner, so that ions excited by PVD vacuum coating equipment can be uniformly coated on the exposed surface of each screw along the radial direction; the holes are non-through holes, so that the bottom of the screw is not covered with a coating; the holes are provided with an upper layer and a lower layer which are aligned in the center, and the diameter of the hole of the lower layer is smaller than that of the hole of the upper layer, so that the screw can provide supporting force for the screw and can be stably kept vertical; the screw positioning device can position a screw to enable the screw to quickly slide into a hole; finally, the screw is not coated in the hole, and the part (including the top surface of the screw head) exposed outside the jig main body is covered with a uniform coating.

Description

PVD (physical vapor deposition) shielding jig for micro screws

Technical Field

The utility model belongs to the technical field of PVD vacuum coating, and particularly relates to a PVD shielding jig for miniature screws.

Background

With the technical development and high performance requirements of the existing electronic products, the traditional electroplating technology cannot meet the use requirements of internal parts, and the introduction of the PVD vacuum coating technology further improves the performance of the electronic products, so that the technology is widely applied to the electronic field. For PVD vacuum coating of screws, the prior art adopts thin iron wires to wind the screws and then hang the screws on a hanger, and uses high-temperature adhesive tapes to stick the parts which are not coated with films, but for the screws used on 3C electronic products, the appearance is extremely small, the length is less than 10mm, and the outer diameter is less than 1mm, and when the products are coated with films by adopting the existing coating mode, the PVD jig has the defects of unreasonable design, poor quality of product films, inconvenience in operation, time and labor waste and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the shielding jig applied to the vacuum coating of the miniature screws is provided aiming at the defects of the existing solution, the jig is novel and attractive in structural design, good in stability and reliability, uniform in coating and excellent in shielding effect, the PVD (physical vapor deposition) film performance of the miniature screws can be effectively improved, and the productivity is remarkably improved.

In order to achieve the technical effects, the utility model adopts the technical scheme that:

a PVD (physical vapor deposition) shielding jig for miniature screws comprises a jig main body in a circular plate shape, wherein a plurality of rings of holes distributed in a ring shape are formed in the upper surface of the jig main body along the circumferential direction, and the holes in adjacent rings are distributed in a staggered mode, so that ions excited by PVD vacuum coating equipment can be uniformly coated on the exposed surface of each screw along the radial direction; the holes are non-through holes, so that the bottom of the screw is not covered with a coating; the holes are provided with an upper layer and a lower layer which are aligned in the center, and the diameter of the hole of the lower layer is smaller than that of the hole of the upper layer, so that the screw can provide supporting force for the screw and can be stably kept vertical; the screw positioning device can position a screw to enable the screw to quickly slide into a hole; finally, the screw is not coated in the hole, and the part (including the top surface of the screw head) exposed outside the jig main body is covered with a uniform coating.

Further, the interval between the ring belts of the adjacent holes is 4 to 8 times of the diameter of the screw along the diameter direction.

Further, the distance between two adjacent holes is 3-6 times of the diameter of the screw along the circumferential direction.

Further, the jig main body is of an integrated structure.

Further, the center of the jig main body is provided with a round through hole, and the diameter of the round through hole is matched with the outer diameter of a hanging rod of the PVD vacuum coating equipment.

Compared with the prior art, the utility model has the beneficial effects that:

1. the holes shield the bottom of the micro screws, so that the micro screws are not coated with the film coating layer;

2. the miniature screws can quickly enter the holes and stand up through the holes with large upper parts and small lower parts;

3. the adjacent holes are staggered, so that the ion beam current of the coating can be uniformly coated on the surface of the screw.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is apparent that the described embodiments are some, but not all embodiments of the present invention.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a front structural view of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Detailed Description

As shown in fig. 1-3, a PVD shielding jig for micro screws comprises a jig main body 1 in a circular plate shape, wherein a circular through hole 2 is formed in the center of the jig main body 1, the diameter of the circular through hole 2 is matched with the outer diameter of a hanging rod of PVD vacuum coating equipment, and a plurality of rings of holes 3 distributed in a ring shape are formed in the upper surface of the jig main body 1 along the circumferential direction. The holes 3 on the adjacent annular belts are distributed in a staggered mode, so that ions excited by the PVD vacuum coating equipment can be uniformly coated on the exposed surface of each screw along the radial direction. The holes 3 are non-through holes, so that the bottom of the screw is not covered with a coating; the hole 3 is provided with an upper layer and a lower layer which are aligned in the center, and the diameter of the hole of the lower layer is smaller than that of the hole of the upper layer, so that the screw can provide supporting force for the screw and can be stably kept vertical; it provides a location for the screw to slide quickly into the hole 3. When in use, the part of the screw in the hole 3 is not coated, and the part (including the top surface of the screw head) exposed outside the jig main body 1 is covered with a uniform coating. Preferably, the spacing between the annular bands of adjacent holes 3 is 6 times the diameter of the screw in the diameter direction; in the circumferential direction, the distance between two adjacent holes 3 is 4 times of the screw diameter. Through the structural design, the tool has the advantages of novel structural design, good stability and reliability, uniform coating and excellent shielding effect, can effectively improve the performance of the PVD film layer of the miniature screw, and obviously improves the productivity.

The present invention is not limited to the above-described embodiments, and various modifications made without inventive step from the above-described concept will fall within the scope of the present invention for those skilled in the art.

Claims

1. A PVD (physical vapor deposition) shielding jig for miniature screws is characterized by comprising a jig main body in a circular plate shape, wherein a plurality of rings of holes distributed in a ring belt shape are formed in the upper surface of the jig main body along the circumferential direction, and the holes in adjacent ring belts are distributed in a staggered mode; the holes are non-through holes, the holes are provided with an upper layer and a lower layer, the centers of the upper layer and the lower layer are aligned, and the diameter of the holes in the lower layer is smaller than that of the holes in the upper layer.

2. The PVD shield jig for minisize screws of claim 1, wherein a distance between adjacent rings of the holes is 4-8 times a diameter of a screw in a diameter direction.

3. The PVD shield jig for minisize screws of claim 1, wherein a distance between two adjacent holes is 3-6 times of a screw diameter along a circumferential direction.

4. The PVD shield jig for minisize screws of claim 1, wherein the jig main body is of an integrated structure.

5. The PVD shielding jig for micro-screws according to claim 1, wherein the center of the jig main body is provided with a round through hole, and the diameter of the round through hole is matched with the outer diameter of the hanging rod of the PVD vacuum coating equipment.