CN102750582A

CN102750582A - Method for automatically counting parts on surface mount technology material belt and automatic counting machine

Info

Publication number: CN102750582A
Application number: CN2011101029821A
Authority: CN
Inventors: 陈文华
Original assignee: Inventec Corp
Current assignee: Inventec Corp
Priority date: 2011-04-19
Filing date: 2011-04-19
Publication date: 2012-10-24

Abstract

The invention discloses a method for automatically counting parts on a surface mount technology (SMT) material belt, and the method can be applied to an automatic counting machine. The method for automatically counting the parts on the SMT material belt includes: reading target color signals corresponding to the SMT material belt, wherein the SMT material belt has a plurality of parts, and the target color signals indicate the color of the surfaces of the parts; rolling the SMT material belt and enabling the SMT material belt to pass through a detecting area, and using a color detecting device to continuously capture real-time color signals corresponding to a part of the SMT material belt in the detecting area; comparing the real-time color signals with the target color signals; outputting part existing signals when the real-time color signals are in accordance with the target color signals; and starting counting program and calculating the number of the parts on the SMT material belt according to the part existing signals of the first part.

Description

Automatically the method for the part on the counting surface mount technology strip and some material machine automatically

Technical field

(surface mount technology, the SMT) method of the part on the strip and put the material machine automatically is particularly about the method for the part on a kind of automatic counting SMT strip and put the material machine automatically about a kind of counting surface mount technology in the present invention.

Background technology

The electronics processer need maintain enough stocks to making required various assemblies, but that numerous small parts such as resistance in heaps or transistor are not only taken in is difficult, for quantitative keyholed back plate a great problem especially.The dealer needs accurately to control present stock's quantity, could manage storage situation and cost effectively.

But this situation is along with the exploitation of SMT has had change.The dealer is disposed at a large amount of parts on the flexible SMT strip mode such as to paste regularly, the SMT strip is tied taken in after being rolled into the strip volume again, therefore can fitly a large amount of parts be taken in management.In order to calculate the part number,, manufacturer utilizes the part number in the strip length computation SMT strip though developing a kind of material machine of putting.But the front and back of a volume SMT strip each some are the empty strips that does not have part, and therefore traditional method need be with the reference position and the end position of the part that is welded with part in the artificial judgment strip, and can't automatically calculate.Therefore each some material machine all needs an operator operation, and the operation efficiency of manpower is extremely low.

In order to calculate number of parts automatically; Except pilot hole; There is dealer's other correspondence on the position of each part on the SMT strip to offer and confirms the hole; And the existence that part is judged in the affirmation hole that utilizes the below of part in the laser radiation strip whether, but this method receives the refractive index of piece surface material to influence that therefore accuracy rate is not high easily.And this method only is applicable to the SMT strip that offers the affirmation hole under the part in addition, can't general various types of SMT strips and part.

Summary of the invention

In order to address the above problem, the present invention proposes a kind of automatic counting surface mount technology (surface mount technology, SMT) method of the part on the strip and put the material machine automatically.

Automatically the method for the part on the counting SMT strip can be implemented into automatic some material machine, and wherein some material facility have one first care feed tray, one second care feed tray, a motor, a color detector, a controller automatically, and a counter.

Automatically the method for the part on the counting SMT strip comprises: read a color of object signal of a corresponding SMT strip, wherein the SMT strip has a plurality of parts, and the color of object signal is represented the color on the surface of one of part; Scrolling SMT strip makes the SMT strip through a surveyed area, and utilizes color detector to continue the real-time color signal of acquisition corresponding to the part SMT strip in the surveyed area; Comparison real-time color signal and color of object signal; When the real-time color signal is consistent with the color of object signal, exports a part and have signal; And have signal according to first part, start a counting procedure to calculate a part number of SMT strip.

The step that wherein " reads the color of object signal of corresponding SMT strip " can comprise: a bar code that reads the SMT strip; And the color of object signal that reads corresponding SMT strip according to bar code.Can comprise a barcode machine in addition and put the material machine automatically.

Automatically the method for the part on the counting SMT strip can comprise in addition: set one of part and detect the timing threshold value; Within the time limit of detecting the timing threshold value, when not having arbitrary real-time color signal consistent, export a part end signal with the color of object signal; And when receiving the part end signal, stop counting procedure, and obtain the part number by counting procedure.

Implement example according to one, counting procedure can comprise: calculate the SMT strip between the starting period of counting procedure in by a scrolling length of scrolling; Read a count parameter of corresponding SMT strip; And calculate the part number according to scrolling length and count parameter.

In sum, count the method for the part on the SMT strip automatically and put the material machine automatically and can utilize color detector automatically to start and end counting procedure, therefore can automatically calculate the part number.And see through the mode of setting up corresponding color of object signal in advance, can make this method be applicable to various SMT strips and part.

Description of drawings

Figure 1A one implements the schematic appearance of the automatic some material machine of the part on the automatic counting SMT strip of example;

Figure 1B is the enlarged drawing that the part of an enforcement example is put the material machine automatically;

Fig. 2 one implements the process flow diagram of the method for the part on the automatic counting SMT strip of example;

Fig. 3 A is the synoptic diagram of the surveyed area of an enforcement example;

Fig. 3 B is the synoptic diagram of the surveyed area of an enforcement example;

Fig. 3 C is the synoptic diagram of the surveyed area of an enforcement example;

Fig. 4 is the process flow diagram of the counting procedure of an enforcement example.

Wherein, Reference numeral:

10 put the material machine automatically

11 first care feed trays

12 second care feed trays

13 motors

14 controllers

15 barcode machines

16 color detector

161 luminescence units

162 photosensitive units

17 counters

20 SMT strips

22 parts

24 pilot holes

30 surveyed areas

Embodiment

Below in embodiment, be described in detail detailed features of the present invention and advantage; Its content is enough to make any those skilled in the art to understand technology contents of the present invention and implements according to this; And according to the disclosed content of this instructions, protection domain and accompanying drawing, any those skilled in the art can understand purpose and the advantage that the present invention is correlated with easily.

The present invention provides the method for the part on a kind of automatic counting SMT strip, has a part number of a SMT strip of a plurality of parts with calculating.The present invention also provides the automatic some material machine (being designated hereinafter simply as automatic some material machine) of the part on the real automatic counting SMT strip of making this method, also can be referred to as the automated part counter and put the material machine automatically.

Please with reference to Figure 1A and Figure 1B, it is the schematic appearance of the automatic some material machine of an enforcement example, and part is put the enlarged drawing of material machine automatically.

Automatically the two ends of some material machine 10 dispose one first care feed tray 11 and one second care feed tray 12 respectively, have the SMT strip 20 of a plurality of parts 22 in order to carrying.Among the enforcement example of Figure 1A, the care feed tray on the right is first care feed tray 11, and it carries the part 22 that is not counted as yet in the SMT strip 20.Automatically a motor 13 of some material machine 10 rotates second care feed tray 12, so that part 22 is moved to second care feed tray 12 by first care feed tray 11.

Wherein part 22 can be passive components (passive component) such as resistance, electric capacity or inductance, also can be driving components (active component) such as diode, transistor or integrated circuit.

Please with reference to Fig. 2, it is one to implement the process flow diagram of the method for the part on the automatic counting SMT strip of example.

For correctly calculate the part number, just at first need to judge automatically in the SMT strip 20 from where beginning to dispose part 22.This controller 14 of putting material machine 10 is automatically read a color of object signal (step S110) of corresponding SMT strip 20.The color on the surface of a part 22 of color of object signal indication.The content of color of object signal can be one group of colour coding of representing with 16 carries, for example 0xFFCC00.Also can give self-defining numbering respectively to specific a plurality of colors, again will be corresponding to the numbering of the color on the surface of part 22 as the color of object signal.

In more detail, need the corresponding color of object signal of record respectively to the SMT strip with different parts 22 20, correctly to carry out the step of follow-up identification part 22.Therefore can set up a form or a database in advance, store different SMT strip 20 pairing different target color signals.Implement example according to one, can utilize a barcode machine 15 of automatic some material machine 10 to read a bar code of SMT strip 20; Read the color of object signal of corresponding SMT strip 20 again from form or database according to bar code.

And motor 13 continues scrolling SMT strip 20, makes the different surveyed areas that partly constantly pass through color detector 16 in the SMT strip 20.Automatically put material machine 10 and utilize color detector 16 to continue the real-time color signals (step S120) of acquisition corresponding to the part SMT strip 20 in the surveyed area.

Color detector 16 can comprise a luminescence unit 161 and a photosensitive unit 162, is configured in its surveyed area and can contains at least by the part SMT strip 20 of scrolling.Implement example according to one, the irradiate light that luminescence unit 161 sends is at

part SMT strip

20, and 162 receptions of photosensitive unit are by the light of part SMT strip 20 refractions, and judges the real-time color signal according to the light of this refraction.The real-time color signal should adopt identical coded system with the color of object signal, for example all adopts the color code table of identical self-defined content.

Color detector 16 can be configured in the centre of first care feed tray 11 and second care feed tray 12, shown in Figure 1A; Also can be disposed near first care feed tray 11 or the position of second care feed tray 12.In other words, color detector 16 continues to pass through in the acquisition SMT strip 20 image of the part of fixing surveyed area.

Please with reference to Fig. 3 A, Fig. 3 B and Fig. 3 C, it is respectively the synoptic diagram of the surveyed area of an enforcement example.

In this enforcement example, SMT strip 20 is constantly by scrolling from right to left.When SMT strip 20 had just begun by scrolling, section start (left side in this enforcement example) was the sky strip, does not dispose part 22 above.Therefore when just beginning by scrolling, the color on the empty strip of the real-time color signal indication surface that surveyed area 30 captures is like Fig. 3 A.Along with motor 13 runnings, first part 22 on the SMT strip 20 gets into surveyed area 30, like Fig. 3 B.Therefore the color on real-time color signal indication part 22 surfaces that capture of color detector 16, and the color of non-NULL strip.SMT strip 20 can continue by scrolling, and color detector 16 can continue as Fig. 3 C, to detect the color of follow-up part 22.

It is noted that the setting of color of object signal and real-time color signal is relevant with the configuration of color detector 16.The surface of part 22 has multiple color, but color detector 16 can detect in the part 22 color of fixing point, therefore can dispose color detector 16 to the part that color in the part 22 and empty strip differ greatly.And the color of object signal is exactly to be disposed at the surface color that the color detector 16 of this position should be able to detected part 22.

New real-time color signal and color of object signal (step S130) that controller 14 comparison continues to obtain, and judge real-time color signal and color of object signal whether consistent (step S140).When the real-time color signal was consistent with the color of object signal, there was signal (step S150) in controller 14 outputs one part.For example, when SMT strip 20 is scrolled to the state of Fig. 3 B, when controller 14 judges that the real-time color signal of surveyed area 30 of corresponding this moment is identical with the color of object signal, just send part and have signal.

Have signal according to first part, a counter 17 of putting material machine 10 automatically starts the part number (step S160) that a counting procedure calculates SMT strip 20.That is to say, put material machine 10 automatically and judge by color detector 16 whether the SMT strip 20 in the scrolling has disposed the part of part 22 from the part entering of empty strip, and automatic according to this enabling counting program.

And stop counting procedure automatically when being rolled to the empty strip of the tail end that does not dispose part 22 at SMT strip 20 and obtain the result of counting, controller 14 can be set corresponding to one of part 22 and detect the timing threshold value.When all not having arbitrary real-time color signal consistent within the time limit of detecting the timing threshold value, export a part end signal with the termination counting procedure, and obtain the part number by counting procedure with the color of object signal.

Wherein detecting the timing threshold value for example can be 1 second or 2 seconds, can be set by the factors such as speed of scrolling according to the arranging density and the SMT strip 20 of part 22 on the SMT strip 20.Implement example according to another, also counter 17 is all confiscated part and is had signal within the time limit of detecting the timing threshold value, just stops counting procedure automatically and exports the part number of operation result.

In fact the step of calculation procedure execution is please with reference to Fig. 4, and it is the process flow diagram of the counting procedure of an enforcement example.

Counter 17 calculate earlier SMT strips 20 between the starting period of counting procedure in by a scrolling length of scrolling, and read a count parameter of corresponding SMT strip 20.Wherein count parameter is represented the number of the part 22 that every long measure has in the SMT strip 20, and counter 17 can be equally reads the count parameter of corresponding SMT strip 20 according to bar code again from form or database.Then counter 17 just can calculate the part number according to scrolling length and count parameter.

General SMT strip 20 has the pilot hole 24 of row, the identical spacing of tool between each pilot hole 24.Therefore counter 17 can see through a fluorescence detector or a sprocket wheel of similar step gear calculate SMT strip 20 between the starting period of counting procedure in by the number of the pilot hole 24 of scrolling as scrolling length.For example therefore each double wedge of sprocket wheel can learn scrolling length with the step level (step) of sprocket rotation to individually corresponding to pilot hole 24.For example fluorescence detector can send laser light by the place that appearance is understood in a side aligned hole 24 of SMT strip 20 again, and judges whether to receive the laser light of passing pilot hole 24 in the opposite side of SMT strip 20; And receive that whenever the laser light of once passing pilot hole 24 just represents SMT strip 20 by pilot hole distance of scrolling.

For example if per 3 pilot holes 24 corresponding to 1 part 22, so its count parameter is set as 3.And SMT strip 20 is 9000 pilot hole distances by the scrolling length of scrolling between the starting period of counting procedure, and then the part number is 9000 ÷ 3=3000.

In sum; Automatically the method for the part on the counting SMT strip and put the material machine automatically and can utilize color detector to differentiate the part of SMT strip hollow strip and boundary automatically with part of part, and automatically perform counting procedure according to this and calculate the part number.Therefore the operator of some material machine does not need to keep on a machinery next door always automatically, and can a people take into account many some material machines automatically, and is very convenient efficient again.And as long as set up corresponding color of object signal, SMT strip and part applicable to any kind of have more versatility far beyond existing method of counting.

Claims

One kind automatically the counting surface mount technology (surface mount technology, SMT) method of the part on the strip is characterized in that, comprising:

Read a color of object signal of a corresponding SMT strip, wherein this SMT strip has a plurality of parts, the color on the surface of one of these those parts of color of object signal indication;

This SMT strip of scrolling makes this SMT strip through a surveyed area, and utilizes a color detector to continue the real-time color signal of acquisition corresponding to this SMT strip of the part in this surveyed area;

Compare this real-time color signal and this color of object signal;

When this real-time color signal is consistent with this color of object signal, exports a part and have signal; And

There is signal according to first this part, starts a counting procedure to calculate a part number of this SMT strip.
2. the method for the part on the automatic counting SMT strip as claimed in claim 1 is characterized in that, this step that reads this color of object signal that should the SMT strip comprises:

Read a bar code of this SMT strip; And

Read this color of object signal that should the SMT strip according to this bar code.
3. the method for the part on the automatic counting SMT strip as claimed in claim 1 is characterized in that other comprises:

Set one of this part and detect the timing threshold value;

When detecting within the time limit of timing threshold value, when not having arbitrary this real-time color signal consistent, export a part end signal with this color of object signal at this; And

When receiving this part end signal, stop this counting procedure, and obtain this part number by this counting procedure.
4. the method for the part on the automatic counting SMT strip as claimed in claim 1 is characterized in that this counting procedure comprises:

Calculate this SMT strip between the starting period of this counting procedure in by a scrolling length of scrolling;

Read a count parameter that should the SMT strip; And

Calculate this part number according to this scrolling length and this count parameter.
5. an automatic some material machine of counting the part on the SMT strip automatically is characterized in that, comprising:

One first care feed tray carries a plurality of parts that are not counted as yet in the SMT strip;

One second care feed tray;

One motor rotates this second care feed tray, so that those parts are moved to this second care feed tray by this first care feed tray, and makes this SMT strip through a surveyed area;

One color detector, a real-time color signal of this SMT strip of part in lasting this surveyed area of acquisition;

One controller, compare this real-time color signal with to a color of object signal that should the SMT strip, the wherein color on the surface of one of these those parts of color of object signal indication; When this real-time color signal was consistent with this color of object signal, this controller was exported a part and is had signal; And

There is signal enabling in one counter according to first this part, to calculate a part number of this SMT strip.
6. the automatic some material machine of the part on the automatic counting SMT strip as claimed in claim 5 is characterized in that other comprises:

One barcode machine reads a bar code of this SMT strip, and this controller reads this color of object signal that should the SMT strip according to this bar code.
7. the automatic some material machine of the part on the automatic counting SMT strip as claimed in claim 5; It is characterized in that; This controller is set one of this part and is detected the timing threshold value, and when detecting within the time limit of timing threshold value, when not having arbitrary this real-time color signal consistent with this color of object signal at this; Export a part end signal, and this counter stops according to this part end signal.
8. the automatic some material machine of the part on the automatic counting SMT strip as claimed in claim 5; It is characterized in that; This counter calculate this SMT strip between the starting period of this counter in by a scrolling length of scrolling; And read, and calculate this part number according to this scrolling length and this count parameter to a count parameter that should the SMT strip.