CN219085275U

CN219085275U - Improved Mask film for lead frame

Info

Publication number: CN219085275U
Application number: CN202223391225.3U
Authority: CN
Inventors: 张秋涛; 朱征超
Original assignee: Suzhou Xingshengke Semiconductor Material Co ltd
Current assignee: Suzhou Xingshengke Semiconductor Material Co ltd
Priority date: 2022-12-18
Filing date: 2022-12-18
Publication date: 2023-05-26
Anticipated expiration: 2032-12-18

Abstract

The utility model provides an improved Mask film for a lead frame, which relates to the technical field of lead frames and comprises a top plate, wherein side plates are symmetrically and fixedly connected to the bottom of the top plate. The utility model relates to a MASK film, which transfers design patterns onto a polyester film base photo film, wherein the photo film has clear and sharp image, meets the exposure production requirement, tightly combines the photo film with soda Glass, and covers a protective film on the surface, in order to avoid damage when the soda Glass is covered, the lower part of the photo film is used for protecting the soda Glass by a traction film, the MASK film is stripped before being put into use, the price of each MASK film is only 10% of the price of Glass MASK, conductive particles exist on the MASK film, the electrostatic damage is not caused, the production cost is saved, the manufacturing period of the MASK film is 1 day, the manufacturing period of the MASK film is less than that of the Glass MASK for 2 days, the machine halt waiting time of an exposure machine is shortened, the machine operation rate is improved by 6%, and the cost and the production efficiency are further saved.

Description

Improved Mask film for lead frame

Technical Field

The utility model relates to the technical field of lead frames, in particular to an improved Mask film for a lead frame.

Background

With the rapid development of the electronic industry, the demand of people for electronic products is increasing, the lead frame is used as a main carrier of electronic components, the demand is also increasing gradually, glass Mask is used as an indispensable part in the production of the lead frame, and the loss of Glass Mask can cause the increase of the production cost of the lead frame.

In the production process, the surfaces of the Glass masks and the copper materials are rubbed with each other to generate static electricity to cause static electricity damage, and exposure production of the Glass masks with static electricity damage causes defects of lead frames to result in scrapping of the products, so that in order to reduce the cost, an improved Mask film for the lead frames is provided.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, the surface of a Glass Mask and a copper material are rubbed with each other to generate static electricity to cause static electricity to be knocked, and the exposure production of the Glass Mask with static electricity to be knocked and damaged causes defects of lead frames to cause scrapping of the products.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an improved generation Mask film for lead frame, includes the roof, the bottom symmetry fixedly connected with curb plate of roof, two the sliding tray has all been seted up to the opposite side internal surface of curb plate, first pressfitting subassembly fixed mounting is between two curb plates, second pressfitting subassembly quantity is established to two, second pressfitting subassembly sets up the top that is located first pressfitting subassembly between two curb plates, mask film, the Mask film is placed on first pressfitting subassembly, the Mask film includes protection film, light drawing film, soda glass and traction film, light drawing film sets up the below at the protection film, soda glass sets up the below at light drawing film, traction film sets up the below at soda glass.

Further, the first pressing assembly comprises lower roll shafts, the number of the lower roll shafts is three, one end of each lower roll shaft is fixedly connected with a rotating column, the other end of each lower roll shaft is fixedly connected with a connecting column, and the lower roll shafts are matched with the connecting columns through the rotating columns to play a role in rotating between the two side plates.

Further, the rotation post and the spliced pole are connected with two curb plates rotation respectively, the surface of rotation post is provided with the bearing, one of them the surface fixed mounting of curb plate has driving motor, driving motor output and one of them rotation post fixed connection have played through setting up driving motor and have driven rotation post and lower roller pivoted effect, have improved lower roller rotation effect through setting up the bearing.

Further, a transmission belt is arranged between the outer surfaces of two adjacent connecting columns, a conveying belt is arranged between the outer surfaces of three lower roll shafts, a traction film is placed on the conveying belt, and the three lower roll shafts play a role in synchronous rotation through being matched with the conveying belt.

Further, the second pressing assembly comprises a damper, the damper is fixedly connected to the bottom of the top plate, a mounting frame is fixedly connected to the bottom of the damper, a spring is sleeved on the outer surface of the damper, the damper is matched with the spring to play a role in sliding upwards of the upper roll shaft, and the problem that damage is caused by hard extrusion of MASK films by the upper roll shaft and the lower roll shaft is avoided.

Further, rotate between the internal surface of mounting bracket and be connected with the roller, the surface of mounting bracket is laminated with the interior surface wall of sliding tray, the position of roller corresponds with the position of roller down, has played the effect of cooperation roller down to MASK film pressfitting through setting up the roller.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. in the utility model, the MASK film transfers the design pattern onto the polyester film base photo film, the photo film has clear and sharp image, meets the exposure production requirement, then the photo film is tightly combined with soda Glass, and the surface is covered with a protective film, so as to avoid damage when the soda Glass is covered with the protective film, the lower part of the photo film is used for protecting the soda Glass, the MASK film is stripped before being put into use, the price of each MASK film is only 10% of the price of Glass MASK, conductive particles are present on the MASK film, the static impact is not caused, the production cost is saved, the manufacturing period of the MASK film is 1 day, the manufacturing period of the MASK film is 2 days less than that of the Glass MASK is shortened, the downtime of an exposure machine is shortened, the utilization rate of the machine is improved by 6%, and the cost and the production efficiency are further saved.

2. According to the utility model, the damper is an adjustable damper, when the upper roll shaft is used for pressing the MASK film, the damper is matched with the spring to press the upper roll shaft, so that the problem that the pressing effect is reduced after the upper roll shaft and the conveying belt are worn is solved, and meanwhile, the problem that the MASK film is damaged due to hard extrusion of the upper roll shaft is avoided.

Drawings

Fig. 1 is a perspective view of an improved Mask film for a lead frame according to the present utility model;

fig. 2 is a cross-sectional perspective view of an improved Mask film for a lead frame according to the present utility model;

fig. 3 is a schematic structural view of a first press-fit assembly of an improved Mask film for a lead frame according to the present utility model;

fig. 4 is a schematic structural view of a second pressing assembly of an improved Mask film for a lead frame according to the present utility model;

fig. 5 is a schematic diagram of a Mask film structure of an improved Mask film for a lead frame according to the present utility model.

Legend description: 1. a top plate; 11. a side plate; 12. a sliding groove; 2. a first press-fit assembly; 201. a lower roll shaft; 202. rotating the column; 203. a bearing; 204. a driving motor; 205. a connecting column; 206. a transmission belt; 207. a conveyor belt; 3. a second press-fit assembly; 301. a damper; 302. a spring; 303. a mounting frame; 304. an upper roll shaft; 4. MASK film; 401. a protective film; 402. photo-drawing film; 403. soda glass; 404. and (5) pulling the film.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides an improved generation Mask film for lead frame, including roof 1, the bottom symmetry fixedly connected with curb plate 11 of roof 1, sliding tray 12 has all been seted up to the opposite side internal surface of two curb plates 11, first pressfitting subassembly 2 fixed mounting is between two curb plates 11, second pressfitting subassembly 3 quantity is set up to two, second pressfitting subassembly 3 sets up the top that is located first pressfitting subassembly 2 between two curb plates 11, mask film 4 is placed on first pressfitting subassembly 2, mask film 4 includes protection film 401, light drawing film 402, soda glass 403 and traction film 404, light drawing film 402 sets up in the below of protection film 401, soda glass 403 sets up in the below of light drawing film 402, traction film 404 sets up in the below of soda glass 403.

As shown in fig. 1-3, the first pressing assembly 2 includes three lower rollers 201, wherein the number of the lower rollers 201 is three, one end of each lower roller 201 is fixedly connected with a rotating column 202, the other end of each lower roller 201 is fixedly connected with a connecting column 205, and the lower rollers 201 are matched with the connecting columns 205 through the rotating columns 202, so that the function of rotating between the two side plates 11 is achieved.

As shown in fig. 1-3, the rotating column 202 and the connecting column 205 are respectively connected with the two side plates 11 in a rotating way, the bearing 203 is arranged on the outer surface of the rotating column 202, the driving motor 204 is fixedly arranged on the outer surface of one side plate 11, the output end of the driving motor 204 is fixedly connected with one rotating column 202, the rotating effect of driving the rotating column 202 and the lower roll shaft 201 is achieved through the arrangement of the driving motor 204, and the rotating effect of the lower roll shaft 201 is improved through the arrangement of the bearing 203.

As shown in fig. 1, 2, 3 and 5, a driving belt 206 is disposed between the outer surfaces of two adjacent connecting columns 205, a conveying belt 207 is disposed between the outer surfaces of three lower roll shafts 201, a traction film 404 is disposed on the conveying belt 207, and the three lower roll shafts 201 play a role of synchronous rotation through being matched with the conveying belt 207.

As shown in fig. 2 and fig. 4, the second pressing assembly 3 includes a damper 301, the damper 301 is fixedly connected to the bottom of the top plate 1, a mounting frame 303 is fixedly connected to the bottom of the damper 301, a spring 302 is sleeved on the outer surface of the damper 301, the damper 301 cooperates with the spring 302 to play a role in sliding the upper roll shaft 304 upwards, and the problem that the upper roll shaft 304 and the lower roll shaft 201 hard extrude the MASK film 4 to cause damage is avoided.

As shown in fig. 2 and 4, an upper roller shaft 304 is rotatably connected between the inner surfaces of the mounting frame 303, the outer surface of the mounting frame 303 is attached to the inner surface wall of the sliding groove 12, the position of the upper roller shaft 304 corresponds to that of the lower roller shaft 201, and the upper roller shaft 304 is arranged to play a role in pressing the MASK film 4 by matching with the lower roller shaft 201.

The application method and the working principle of the device are as follows: while the existing Glass Mask uses photoresist to transfer the design pattern onto soda Glass 403, the Mask film 4 in the application transfers the design pattern onto a polyester film base photo film 402 with the thickness of 0.175mm, the photo film 402 has clear and sharp image, meets the requirement of exposure production, the photo film 402 is tightly combined with the soda Glass 403, and the surface is covered with a protective film 401, in order to avoid breakage when the soda Glass 403 is covered, the lower part of the Glass Mask is used for protecting the soda Glass 403, the Mask film 4 is peeled off before being put into use, the price of each Mask film 4 is only 10% of the price of the Glass Mask, conductive particles exist in the Mask film 4, electrostatic damage is not caused, the breakage caused by electrostatic damage is reduced to 0 from 15 times per month, the production cost is saved, the product reject caused by electrostatic damage is reduced to 0, the total yield of the lead frame product is improved by 0.06%, the manufacturing period of the MASK film 4 is 1 day, which is 2 days less than that of the Glass Mask, because the manufacturing period of the MASK film 4 is shortened, the stop and waiting time of an exposure machine is shortened, the utilization rate of the machine is improved by 6%, the cost is saved, and the production efficiency is improved, in the device, the lower roller shaft 201 is driven to rotate by starting the driving motor 204 to match the rotating column 202, the lower roller shaft 201 is matched with the transmission belt 206, the synchronous rotation of the three lower roller shafts 201 is realized, when the MASK film 4 is placed on the conveying belt 207 on the outer surface of the lower roller shaft 201 for conveying, the lower roller shaft 201 is matched with the upper roller shaft 304 for pressing, the damper 301 is an adjustable damper 301, when the upper roller shaft 304 presses the MASK film 4, the problem that the pressing effect is reduced after the upper roller shaft 304 and the conveying belt 207 are worn out is avoided by pressing the damper 301 matched with the spring 302, meanwhile, the problem that the MASK film 4 is damaged due to hard extrusion of the upper roll shaft 304 is avoided.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. An improved Mask film for a lead frame, comprising:

the sliding device comprises a top plate (1), wherein side plates (11) are symmetrically and fixedly connected to the bottom of the top plate (1), and sliding grooves (12) are formed in the inner surfaces of opposite sides of the two side plates (11);

the first pressing assembly (2), the said first pressing assembly (2) is fixedly installed between two lateral plates (11);

the number of the second pressing assemblies (3) is two, and the second pressing assemblies (3) are arranged between the two side plates (11) and are positioned above the first pressing assemblies (2);

MASK film (4), MASK film (4) is placed on first pressfitting subassembly (2), MASK film (4) include protection film (401), light drawing film (402), soda glass (403) and draw film (404), light drawing film (402) set up in the below of protection film (401), soda glass (403) set up in the below of light drawing film (402), draw film (404) set up in the below of soda glass (403).

2. The improved Mask film for lead frames according to claim 1, wherein: the first pressing assembly (2) comprises lower roll shafts (201), the number of the lower roll shafts (201) is three, one end of each lower roll shaft (201) is fixedly connected with a rotating column (202), and the other end of each lower roll shaft (201) is fixedly connected with a connecting column (205).

3. The improved Mask film for lead frames according to claim 2, wherein: the rotary column (202) and the connecting column (205) are respectively connected with the two side plates (11) in a rotary mode, bearings (203) are arranged on the outer surface of the rotary column (202), a driving motor (204) is fixedly arranged on the outer surface of one side plate (11), and the output end of the driving motor (204) is fixedly connected with one rotary column (202).

4. The improved Mask film for lead frames according to claim 3, wherein: a transmission belt (206) is arranged between the outer surfaces of two adjacent connecting columns (205), a conveying belt (207) is arranged between the outer surfaces of three lower roll shafts (201), and a traction film (404) is placed on the conveying belt (207).

5. The improved Mask film for lead frames according to claim 1, wherein: the second pressing assembly (3) comprises a damper (301), the damper (301) is fixedly connected to the bottom of the top plate (1), a mounting frame (303) is fixedly connected to the bottom of the damper (301), and a spring (302) is sleeved on the outer surface of the damper (301).

6. The improved Mask film for lead frames according to claim 5, wherein: an upper roll shaft (304) is rotatably connected between the inner surfaces of the mounting frames (303), the outer surfaces of the mounting frames (303) are attached to the inner surface walls of the sliding grooves (12), and the positions of the upper roll shaft (304) correspond to the positions of the lower roll shaft (201).