JPH03215997A - Electronic component feed device - Google Patents

Abstract

PURPOSE:To prevent electronic components from being wasted and to protect a tape cutting means against damage caused by biting into an electronic component so as to keep its cutting edge sharp for a long term by a method wherein a component recovery means is provided between a suction holding means and the tape cutting means to take out electronic components which the suction holding means has failed in holding and is left on the tape by giving a shock to the blank tape to recover. CONSTITUTION:A component recovery means 20 is provided between a suction means 21 and a tape cutting means 21 to take out electronic components P which are left behind on a tape A by the suction holding means by giving a shock to the blank tape to recover. The tape cutting means 21 is composed of a fixed edge 31 and a pair of cutting edges 32 and 33 arranged on the sides of the edge 31 confronting each other, the cutting edges 32 and 33 are made to slide inward alternately and obliquely so as to enable the inner ends of the cutting edges 32 and 33 to engage with the other sides at the other end beyond the center of the fixed edge 33. By this setup, electronic components are wasted, and a tape cutting means is protected against damage caused by biting of an electronic component so as to keep its cutting edge sharp for a long term.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention involves holding extremely small electronic components on a tape at predetermined intervals, and removing the electronic components from the tape and placing them at a predetermined location. The present invention relates to a supply device for supplying parts, and particularly to an improvement in a recovery structure for electronic components that fail to be removed from a tape, and an improvement in a tape cutting means for cutting empty tape.

(Prior Art) For example, an electronic component supply device is used to take out microscopic chip-shaped electronic components one by one and automatically mount them on a circuit board. When taking out electronic components, if you simply stack a large number of electronic components together in a disorderly manner, the electronic components will be extremely small.
It is difficult to always take out these items accurately and in a constant posture.

Therefore, as shown in FIGS. 1 and 2, a tape T is used to hold a large number of electronic components p. In other words, tape T includes adhesive tape 1 and tape body 2.
The tape main body 2 is provided with openings at a predetermined pitch, and the four storage parts 3 and the adhesive tape are attached.
・is formed. The electronic components p are housed in each of the four housing parts 3, and held in place by a cassette tape. Such a table T is used for electronic parts p...
It is wound around the table reel 4 while holding it.

Then, by unrolling the tape T at predetermined pitches, all the electronic components p... housed in the four housing parts 3... are exposed in the same posture and at equal intervals, so that they can be easily taken out from here. Therefore, it is easy to supply it to a predetermined area.

Conventionally used electronic component supply devices, for example,
It is configured as shown in the figure. Below is the explanation:
A tape reel 4 wound with a tape T containing electronic components p is rotatably supported by a pivot 5. Normally, a plurality of tape reels 4 are arranged at predetermined intervals along the axial direction of the pivot shaft 5, and each tape T is extended from the tape reel 4 all at once while aligning the position of the electronic component p. It's about to be served. 6 in the figure indicates these tape drills 4.
It is a tape feeding means that simultaneously feeds out the tape T extended from the tape T by a predetermined pitch. This is composed of a tape feeder 7, a feeder drive section 8, and a tape guide 9. The tape guide 9 is connected to the tape feeder 7.
This guides the tape T, which is fed out in the horizontal direction, toward this side. Further, a suction nozzle 10 constituting a suction means is disposed above the tape feeding means 6. The same number of suction nozzles as the tape reels 4 are prepared, each of which communicates with a vacuum source (not shown), and is driven in synchronization with the timing at which the tape T is fed out by the tape feeding means 6. The tip thereof is configured to reciprocate with precise movement between the tape T storage recess 3 of the tape feeder 7'' and, for example, a circuit board F located in a mounting device (not shown). On the other hand, a tape cutting means 11 is provided below the tape feeding means 6, and a tape collecting means 12 is further provided below this.

As shown in the same figure and FIG. .3.1
A pair of left and right cutter blades 1.4.14 are arranged with their cutting edges spaced apart from each other and are driven in synchronization with the timing of feeding out the tape T by the feeding means 6.
, and meshes with the fixed blade 13.13 in the driven state. Note that 15 15 is an air cylinder that drives the cutter blade 1414, and 16 1 is an air cylinder that drives the cutter blade 1414.
6 is a fixed blade 1 that faces each other with a fixed blade 14;
This is a guide that guides the robot to reciprocate in a straight manner toward 3.13. The tape collecting means 12 includes an auxiliary tape guide 7 facing away from the lower end of the tape guide 9, and a tape discharge conveyor 1 disposed between the tape guides 9 and the auxiliary tape guide 17.
It consists of 8.

Thus, the tape feeding means 6 aligns the positions of the plurality of tapes T holding the electronic components p, and simultaneously feeds them out at a predetermined pitch, and the suction nozzles 10 are aligned with the timing of this operation. The electronic component p is simultaneously attracted to the tip of the tip T by vacuum force and mounted on the circuit board F. Empty tape T after taking out electronic parts P
is guided by the tape guide 9 and inserted between the fixed blade] 313 of the tape cutting means 11 and the cutter blades 14, 14.

The cutter blades 1, 4, and 14 are driven in synchronization with the operation of the tape feeding means 6, mesh with the fixed blades 13, and cut the empty tape T to a predetermined length.

These cut empty tapes T are transported to the tape discharge conveyor 1.
8 and is discharged to a predetermined discharge site outside.

(Problem to be Solved by the Invention) By the way, although the electronic component supply device is configured and operates in this manner, for example, the suction nozzle 10 may fail to suction the electronic component p due to a combination of various factors. There are things to do. In this case, the electronic component p is sent to the tape cutting means 11 while remaining inside the housing section 3. On the other hand, the tape T is not necessarily guided by the tape guide 9 in a vertically hanging state, but remains curled to some extent. Therefore, in some cases, the tape cutting means 11
The electronic component p left behind faces the cutting position.

In this state, the cutter blade 14 whose timing is controlled meshes with the fixed blade 13 and cuts the tape T together with the electronic component p. Since the electronic component p is made of hard material,
This will cause the cutting edges of the fixed blade 13 and the cutter blade 14 to get caught, and damage to each other's cutting edges is unavoidable.

Furthermore, even if the electronic component p is left behind, if the timing is off, only the tape T will need to be cut. However, the electronic components p left behind are discharged to the outside together with the cut empty tape T via the tape discharge conveyor 18, and thus the electronic components p mentioned above are wasted.

If the suction nozzle 10 did not make a suction error with respect to the electronic component p, such a problem would not occur, but there are various factors such as the winding condition of the tape T, the tape feeding accuracy of the tape feeding means 6, the timing difference in the operation of the suction nozzle 10, etc. Due to the conditions, it is impossible to completely eliminate suction errors, and some kind of countermeasure is urgently desired.

Furthermore, among the means constituting such an apparatus, there is a particular problem with the tape cutting means 11. That is, as shown in FIG. 7, the blank tape T has a curl, and a part of it is cut between the fixed blade 13 and the cutter blade on the side where it should originally be cut.
It may protrude from between the fixed blade 13 and the cutter blade 14 on the adjacent side. In this state, both cutter blades 1
Even if 4.14 is driven at the same time, the gap between them will be the uncut portion of the tape T that protrudes. Therefore, the tape T is not completely cut, and a portion of the tape T is continuously discharged onto the tape discharge conveyor 18. If the tape T to be discharged is a long one,
There is a risk that the tape T becomes entangled with itself or other cutting tapes T on the conveyor 18 in a complicated manner, and falls off from the conveyor 18 during discharge. Therefore, even if the tape T has some curls, it is desirable to cut it completely.

Furthermore, the cutter blade 14 is adapted to slide straight into engagement with the fixed blade 13. To explain, the cutting edge of the cutter blade 14 slides in a direction perpendicular to the direction of the cutting edge, and meshes with the cutting edge of the fixed blade 13 at the same time. Therefore, when cutting the table T, the reaction force will be applied directly to the cutting edges of the fixed blade 13 and cutter blade 14, and if a large number of sheets are cut, the burden on the cutting edges will be large and the There is a problem where the cutting edge wears down and becomes dull.

The present invention has been made in view of the above circumstances, and its purpose is to reliably remove electronic components left on the tape even if the suction means makes a mistake in picking up the electronic components. This eliminates wastage of electronic parts and prevents damage to the tape cutting means. In addition, even if the empty tape has curls, it always cuts completely.
It is also an object of the present invention to provide an electronic component supply device that allows the tape cutting means to operate smoothly, reduces the burden on the cutting edge, and maintains so-called sharp cutting for a long period of time.

[Structure of the invention]

(Means for Solving the Problems) In other words, the present invention allows a tape feeding means to feed out a tape holding electronic components at predetermined intervals at a predetermined pitch, and a suction means sucks the electronic components from the tape that is fed out. After the electronic components have been taken out, the empty tape is cut into a predetermined length by a tape cutting means, and the cut tape is collected by a tape collecting means and discharged to the outside. (2) A parts collecting means is disposed between the suction means and the tape cutting means to apply an impact to the empty tape, and extract and collect the electronic components left behind by the suction means from the tape; A fixed blade and a pair of cutter blades are arranged opposite to the fixed blade on both the left and right sides. This is an electronic component supplying device characterized in that the inner end of the fixed blade is fixed and meshed at the other side of the fixed blade beyond the center part.

(Function) The component collecting means reliably collects electronic components left behind by the suction means from the tape, thereby eliminating wasted electronic components and preventing the tape cutting means from getting caught in the electronic components.

Furthermore, the arrangement and operation of the fixed blade and the pair of cutter blades of the tape cutting means are limited, thereby reducing the burden on these tape cutting operations.

(Embodiment) An embodiment of the present invention will be described below. The electronic component p to be supplied is placed in the accommodation recess 3 provided in the tape T as previously explained in FIGS. 1 and 2. accommodated,
Moreover, this tape T is still wound around the tape reel 4.

The electronic component supply device is configured as shown in FIG.

A plurality of tape reels 4 wound with tapes T containing the electronic components p are disposed on the pivot shaft 5 at predetermined intervals, and each tape 11 is connected to the electronic component p. The tape feeder is composed of a tape feeder 7, a feeder drive unit 8, and a tape guide 9, which simultaneously feed out the tape T extended from the tape reel 4 by a predetermined pitch at the same time with the positions of the tapes aligned. The number of suction nozzles 10 constituting the suction means is the same as the number of tape reels 4, and each one is driven in synchronization with the timing at which the tape feeding means 6 feeds out the tape T. It is exactly the same as in the conventional system that the storage part 3 of the table T and the circuit board F such as a mounting device (not shown here) are simultaneously reciprocated with accurate movement.

Below the tape feeding means 6, a parts collecting means 20, a tape cutting means 21, and a tape collecting means 22, which will be described later, are arranged in this order.

First, the parts collecting means 20 will be explained. It consists of a tape striking part 23 and a parts receiving part 24. The tape striking unit 23 is driven in synchronization with the tape feeding timing of the tape feeding means 6.]2 A moving air cylinder 25 and a tape T attached to the end of the operating rod to accommodate the tape T led out from the tape edge feeding means 6. It consists of a striking piece 26 that strikes from the back side of the recessed part 3. The component receiving portion 24 is provided below the tape striking portion 23 and at a position opposite thereto, that is, on the opening side of the recess 3 for storing the hanging tape T. As shown in FIG. 4, this consists of a parts collection conveyor 27 that runs endlessly, and a collection box 28 provided at the running end of this parts collection conveyor 27. Therefore, if the electronic component p is placed on the component recovery conveyor 27, it will be discharged into the recovery box 28. Also collection box 2
8 is provided with two parts collection brushes that come into sliding contact with the U-turn portion of the parts collection conveyor 27. Conveyor 27 for electronic parts p
You can scrape it off. Furthermore, the collection box 28 is provided with a collection parts detection sensor 30.
The amount of recovered electronic parts p in the container is detected, and when the amount exceeds a set amount, a signal is output, for example, an alarm is issued.

Next, the tape cutting means 21 will be explained. As shown in FIGS. 3 and 5, this consists of one long fixed blade 31, and a pair of left and right cutter blades 32, 32 disposed on this fixed blade 31 with their cutting edges spaced apart from each other. Consisting of These power ivy blades 32, 32 are respectively provided at the operating rod ends of the air cylinders 33 and 33, and are driven alternately left and right in synchronization with the timing of feeding out the tape T by the tape feeding means 6. Note that the air cylinders 33 and 33 are arranged so as to face diagonally inward from each other, and a guide 3434 for guiding the sliding direction of the cutter blade 3232 is also provided in the same direction. For this reason, the left and right cutter blades 32, 32 are driven to slide diagonally inward toward each other while their cutting edges always remain parallel to the cutting edge of the fixed blade 31.
[4] The inner ends of the fixed blades 31 are set so that their inner ends cross over the center of the fixed blade 31 and are shifted to the other side.

As shown in FIGS. 3 and 4, the tape collecting means 22 is composed of an endlessly traveling tape discharging conveyor 35 and a discharging box 36 disposed in the running direction of the tape discharging conveyor 35. The tape T placed thereon is discharged into a discharge box 36. Also, Ju
The tape ejecting brush 37 is in sliding contact with the U-tang part of the tape ejecting conveyor 35 within the iJj box 36, and the tape is not ejected to the ejecting box 36 but is conveyed on the tape ejecting conveyor 35 with {=1}. The tape T can be scraped off the conveyor 35. The discharge box 36 is provided with an empty tape detection sensor 38, which detects the amount of tape T collected in the discharge box 36 and issues a signal, for example, an alarm, when the amount exceeds a set amount. .

Therefore, each electronic component p
. . . The plurality of tapes T holding the tapes T are aligned in position and simultaneously fed out at a predetermined pitch. Each suction nozzle 10 synchronized with this operation simultaneously suctions the electronic components p from the tape T and mounts them on, for example, a circuit board F. The tape after the electronic component p is taken out
The tapping portion 23 of the parts recovery means 20 acts on the tap T. In other words, the striking piece 26 strikes the four housing parts 3 of the TEP T from the back side, giving an impact to the four housing parts 3! 5. If the electronic component p held in the four storage parts 3 is picked up by the suction nozzle 0, there will be no change, but if for some reason the suction nozzle 1-0 fails to pick up the electronic component p. If it is, the electronic component p is extracted from the housing part 3 by receiving an impact from the striking piece 26. Then, this electronic component p is placed on the component recovery conveyor 27 and transported as it travels. Such electronic parts p are finally collected and collected in the collection box 28, and when the collected parts detection sensor 30 notifies that a predetermined amount of collection has been reached, they are all taken out and used again. Even if the electronic component p tries to cross the U-turn section with the electronic component p attached to the component collection conveyor 27, the two component collection brushes scrape off such electronic component p, so that the electronic component p can be reliably collected.

The empty tape T, from which all the electronic components p have been taken out after passing through the component recovery means 20, is conveyed in a hanging manner so as to face the tape cutting means 21, and the cutter blades 32 alternately mesh with the fixed blades 31. .32 to a predetermined length. Since this tape T is an empty tape from which all the electronic components p have been taken out, the electronic components p will not be caught during cutting. Further, at this time, the left and right cutter blades 32, 32 are driven to slide diagonally inward toward each other while their cutting edges are always kept parallel to the cutting edge of the fixed blade 31. Then, in a state where the cutter blades 32, 32 mesh with the fixed blade 3], the inner ends of each cutter blade 32 move beyond the center of the fixed blade 3] to the other adjacent side. Therefore, even if the position of the tape T to be cut is shifted, it can be completely cut without leaving any uncut portions.

Furthermore, since the cutting direction of the cutter blades 32 and 32 is the direction in which shear force and thick friction force are generated on the tape T, the fixed blade 3 It also reduces the burden placed on the cutting edge.

The tape T cut by the tape cutting means 21 is
The tape falls onto the tape ejection conveyor 35 of the tape collecting means 22, is conveyed, and is ejected to the ejection box 36. At this time, the tape T may cross over the U-turn portion while remaining attached to the discharge conveyor 35 due to static electricity generated due to the cutting action of the tape T or the adhesive force of the tape T itself. However, since the tape removal brush 37 is in sliding contact with this portion, the adhering tape T can be reliably scraped off. Tape T on the above discharge box 36
If the collected tape T reaches a predetermined temperature or higher, the empty tape detection sensor 38 detects and reports this, so that the collected tape T will not overflow from the discharge box 36 to the surrounding area.

〔Effect of the invention〕

As explained above, according to the present invention, even if the suction means makes a mistake in taking out the electronic component, the component collecting means reliably extracts and collects the electronic component left on the tape, thereby eliminating waste of electronic components. It also prevents damage caused by the tape cutting means getting caught in electronic components. In addition, the tape cutting and folding means always cuts perfectly even if the empty tape has curls, etc., and makes this operation effortless, reducing the burden on the cutting edge 2, and maintaining sharp cutting for a long time. It has various effects, such as keeping it in place.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a tape and tape reel equipped with electronic components, FIG. 2 is a longitudinal sectional view of the tape, FIGS. 3 to 5 show an embodiment of the present invention, and FIG. 3 is a supply of electronic components. FIG. 4 is a schematic diagram of the main parts of the parts collecting means and tape collecting means. FIG. 5 is a plan view of the main parts of the tape cutting means. FIGS. 6 and 7 are diagrams of the main parts of the tape collecting means. A conventional example is shown, and FIG. 6 is a schematic configuration diagram of an electronic component supply device, and FIG. 7 is a plan view of the main part of a tape cutting means. P... Electronic component, T... Tape, 10... Adsorption means (suction nozzle), 21... Tape cutting means, 22.
・Tape collecting means, 20... Parts collecting means, 31...
・Hard 19 fixed blade, 3 2, 3 2...Cutter blade.

Claims (1)

[Claims] A tape that holds electronic components at predetermined intervals and is fed out at a predetermined pitch, a suction means that sucks the electronic components from the fed tape and supplies them to a predetermined location, and the electronic components are carried out and supplied by the suction means. A tape cutting means for cutting the empty tape into a predetermined length after being cut, and a tape collecting means for collecting the tape cut into a predetermined length by the tape cutting means and discharging it to the outside. a parts recovery means disposed between the tape cutting means and the tape cutting means, which applies an impact to the empty tape to extract and recover electronic components left behind by the suction means from the tape; The fixed blade is arranged opposite to the fixed blade on both the left and right sides, and slides alternately left and right and diagonally inward to each other, so that the inner ends of each cross over the center of the fixed blade and mesh at the other side. An electronic component feeding device characterized by comprising a pair of cutter blades.