CN202512070U

CN202512070U - Scanner for SMT (surface mount technology) screen detection

Info

Publication number: CN202512070U
Application number: CN2012200235520U
Authority: CN
Inventors: 魏志凌; 宁军; 马秀云
Original assignee: Kunshan Theta Micro Co Ltd
Current assignee: Kunshan Theta Micro Co Ltd
Priority date: 2012-01-19
Filing date: 2012-01-19
Publication date: 2012-10-31
Anticipated expiration: 2022-01-19

Abstract

The utility model discloses a scanner for SMT (surface mount technology) screen detection. The scanner comprises a scanner base plate component, a scanner device, a scanner top cover component and a lamp box cover plate, and the scanner base plate component comprises a sheet metal base plate, a reinforcing rib and an aluminum profile frame serving as a main load-bearing part. The scanner top cover component comprises a holding platform, and the length and the width of the holding platform are not smaller than 635*570mm, so that the holding platform can hold large-sized screens.

Description

A kind of scanner device that is used for the detection of SMT web plate

Technical field

The utility model relates to a kind of SMT web plate pick-up unit, relates in particular to the scanner device that a kind of SMT of being used for web plate detects.

Background technology

The development of As IC industry and the raising of production technology, the miniaturization even the microminiaturization of printed circuit board (PCB) (PCB) become trend.For realizing this target, surface installation technique (SMT) is widely used in being connected between element pasted on surface (SMC) and surface mount device (SMD) and the PCB.SMT need not circuit twist drill plug-in opening, but the SMC/SMD that directly will not have pin or a disconnected lead-in wire is welded on the assigned address of PCB surface.In the SMT technological process, serigraphy directly influences the welding quality of SMT as first procedure, is key wherein and the template of biting is the machining precision of SMT web plate.The SMT web plate that dimensional accuracy is high can guarantee the accuracy of printing with paste, prevents to occur in the subsequent technique defectives such as displacement, bridge joint simultaneously effectively.Therefore, be necessary very much the quality of SMT web plate is detected, thereby reduce in subsequent technique, to occur the probability of defective effectively.

The common deficiency of SMT web plate has: perforate is excessive, perforate is too small, the hole is biasedly moved, porous and few hole.To the defective in the few hole of SMT web plate defective especially porous, the main at present mode that adopts manual detection is promptly used the overlapping web plate printing opacity inspection of tracing paper.This manual detection can check for the less web plate of hole count apace, but for the web plate of hole count more (more than 3,000 to 5,000 even 10,000), the inspection difficulty will improve greatly.For example, be 3,000 to 5,000 web plate for hole count, the professional needs to accomplish in 3-5 minute inspection usually; , then need the longer time even need 2-3 time detection repeatedly to accomplish at the web plate more than 10,000 for hole count.In addition, in the manual detection process, testing staff's technical quality and skill level are uneven, have influenced accuracy rate and detection speed to a certain extent, thereby have limited the raising of detection level.

Therefore, need a kind of device that can detection SMT web plate commercial application, that automatization level is high.

The utility model content

The utility model is intended to solve technical matterss such as the detection speed of SMT web plate in detecting is not high, accuracy of detection is not enough.

For solving the problems of the technologies described above; The scanner device that the utility model provides a kind of SMT of being used for web plate to detect; Comprise: scanner chassis assembly, scanner device, scanner cap assembly, lamp box cover plate; Wherein the scanner chassis assembly comprises panel beating chassis, reinforcement and as the aluminium section bar framework of main supporting part, the scanner cap assembly comprises placement platform, and placement platform is set to the length and width size and is not less than 635*570mm.

The scanner device that the utility model provided can scan the SMT web plate apace, and the clear picture that scans, undistorted, thereby can detect the defective that exists in the SMT web plate quickly and accurately.

Description of drawings

Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation.

Fig. 1 is the chassis view according to the scanner device of an embodiment of the utility model;

Fig. 2 is the top cover view according to the scanner device of an embodiment of the utility model; And

Fig. 3 is the sectional perspective synoptic diagram according to the scanner device of an embodiment of the utility model.

Embodiment

A preferred embodiment of the utility model below will be discussed.But it will be appreciated by those skilled in the art that the detailed description here is not as to the restriction of the utility model protection domain.The utility model also can be achieved through modification or other equivalent way of this embodiment.

Fig. 1 illustrates the chassis assembly according to the scanner device of an embodiment of the utility model.Chassis assembly is positioned at the bottom of scanner device, works to support whole scanner device.Chassis assembly comprises panel beating chassis, reinforcement and aluminium section bar framework.Wherein, the aluminium section bar framework is main supporting part.In one example, base assemblies also comprises 4 level correction devices.For example, these 4 level correction devices can be made up of 4 rubber adjustment pin cups.These 4 rubber adjustment pin cups pass reinforcement, are installed on the panel beating chassis, and are as shown in Figure 1.Through regulating 4 rubber adjustment pin cups, the flatness that can regulate scanner device.

Fig. 2 illustrates the cap assembly according to the scanner device of an embodiment of the utility model.Cap assembly is preferably the panel beating bending part, thereby realizes sealing and protection to scanner.In one example, be respectively equipped with equally spaced scale mark at directions X and Y direction on the lid panel, to help accurately to locate the SMT web plate.In another example, on the lid panel scan button can be installed, to make things convenient for the manual scanning operation.

Produce in the employed steel disc, maximum length and width steel disc is of a size of 635*570mm, and the maximum machined steel chip size of laser cutting machine is 650*800mm.For web plate can be placed on the scanner flat board without barrier, the size that can increase placement platform (be also referred to as document board, be used for placing web plate to be scanned) is can hold maximum sized web plate.In one example, the placement platform size of scanner device preferably is not less than 635*570mm, more preferably is not less than 650*800mm.In above-mentioned example, the placement platform that size increases can guarantee effectively that web plate fits tightly with the scanner flat board all the time.

The size of the lamp box cover plate of scanner device can be greater than the size of maximum web plate.For example, the size of lamp box cover plate can be preferably more than 650*800mm greater than 635*570mm.In one example, the size of lamp box cover plate can cover placement platform fully.The lamp box cover plate can be a removable cover.The self gravitation of removable cover can compress web plate, makes it to fit with scanner is dull and stereotyped all the time, and prevents the scan lamp leakage of light, so that obtain scan image more clearly.But, it will be appreciated by those skilled in the art that on one side and also can in the utility model, use for inactive lamp box cover plate of hinge.

Claims

1. one kind is used for the scanner device that the SMT web plate detects; Comprise: scanner chassis assembly, scanner device, scanner cap assembly, lamp box cover plate; It is characterized in that said scanner chassis assembly comprises the aluminium section bar framework of panel beating chassis, reinforcement and the main supporting part of conduct, said scanner cap assembly comprises placement platform; Said placement platform is set to the length and width size and is not less than 635*570mm, to hold large-sized web plate.

2. scanner device as claimed in claim 1 is characterized in that, said scanner chassis assembly further comprises 4 level correction devices.

3. scanner device as claimed in claim 2 is characterized in that, said 4 level correction devices can comprise 4 rubber adjustment pin cups, and said 4 rubber adjustment pin cup passes said reinforcement and is installed on the said panel beating chassis.

4. scanner device as claimed in claim 1 is characterized in that, the lid panel of said scanner cap assembly can be respectively equipped with equally spaced scale mark on directions X and Y direction.

5. scanner device as claimed in claim 1 is characterized in that, said lamp box cover plate is set to the length and width size greater than 635*570mm.

6. scanner device as claimed in claim 5 is characterized in that, the size of said lamp box cover plate is enough to cover fully said placement platform.

7. like claim 5 or 6 described scanner devices, it is characterized in that said lamp box cover plate is a removable cover.