JPS5969324A - Pitch feed for magazine - Google Patents

Abstract

PURPOSE:To permit pitch feed free from error for a magazine by providing the magazine and an operating plates with the excessive transfer over the width of a light transmission part formed on the operating plate and turn-shifting the magazine and the operating plate. CONSTITUTION:When a magazine 22 into which plate articles are accommodated in a prescribed piling pitch P is pitch-fed through the intermittent rotation of a feed screw which is screwed with the magazine. Optical sensor 40 installed on the transfer passage of an operating plate 39 is operated by each light transmission part 41 in the equal pitch to the piling pitch of the magazine, on the operating plate 39 which shifts in the rectilinear direction by the equal amount to the magazine, interlocked with the transfer of the magazine, and the time point when screw feed is stopped is detected. Further, at the transfer edge of the magazine, the magazine and the operating plate are provided with the excessive transfer over the width of the light transmission part installed onto the operating plate, and the magazine and the operating plate are turn-shifted. Thus, pitch feed free from error is provided for the magazine.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pitch feeding method for a magazine, which is suitable for pitch feeding a magazine that stores plate-shaped articles at a predetermined stacking pitch.

In general, when processing a large number of plate-shaped articles (11), it is necessary to feed the plate-shaped articles continuously onto the line and to store the plate-shaped articles after processing. 1) A magazine capable of storing a certain number of plate-shaped articles is loaded at the rear end, thereby increasing the efficiency of skinning and protecting the plate-shaped articles. Such a mounting h1 is applied when a plate-shaped article is a target of precision machining. For example, in the manufacturing process of semiconductor devices, lead frames are subjected to pellet honding and wire bonding, and the supply side of these work lines (+! ,! 11111 is equipped with a magazine that accommodates the lead frame for processing +qil <&. This magazine is the first
As shown in the figure. Magazine 1 is box-shaped with openings on the front and rear sides.
The storage grooves 3 are formed in multiple stages at a constant pitch P on the inner surfaces of opposing side walls 2, and lead frames 4 as plate-shaped articles can be stacked and stored in each storage groove 3.

Such a magazine 1 is loaded into a magazine holder 5 on the supply side of the punching line shown in FIG. 2, and is arranged with one opening thereof facing the kite rail 6 at the tip of the line. Then, the lead frame 4 stored in the magazine 1 in advance is made to protrude by a certain length from the other open part by the extrusion means 7, and the lead frame 4, which is normally located on the lower end side, is guided one by one by the feeding means 8. I am sending something to rail 6. Further, although not shown, at the terminal end of the line, one lead frame after the working path r is fed into the σlζ machine.

When the lead frame 4 is fed into and out of the magazine 1, the height level of the kite rail 6 is constant, so the height level of each storage groove 3 of the magazine 1 is set to 1j.
It is necessary to match that of Idrail. For this reason, a device for pitch-feeding the magazine 1 is provided.
By lowering (or raising) for each product 1@pitch P, we aim to equalize the level with the guide rail 6,
This allows the lead frame 4 to be fed in and sent out. In addition, on the entrance side (and exit III) of the guide rail 6,
As shown in FIG.
Otosenza 9A and 9B are installed. The photosensors 9A and 9B are capable of transmitting a signal indicating whether the lead frame 4 is being fed (feeding) or has been fed (feeding completed) to the magazine holder vertical drive motor. When the light from 9A and 9B is blocked (4), the magazine bolt 5 is stopped, and if not, the magazine bolt 5 can be lowered by one pitch.

Conventionally, this type of magazine pitch feed device has a configuration in which a feed screw rotatable by a motor is installed upright, and a nut member fixed to the magazine bolder 5 is screwed onto the feed screw. In this case, from the viewpoint of ease of pitch feed drive, a feed screw that matches the stacking pitch P of the magazine 1 is used, and by rotating the feed screw one revolution or an integral number of revolutions with a motor, the magazine 1 is intermittently It was designed to perform a pitch feed operation.

However, in the conventional magazine pitch feeder device described above, there is a one-value point between the following points. That is, the lead frames 4 that are to be stored in the magazine 1 have various sizes, larger and smaller than the capacity of the semiconductor element 1'ii l, and the lead frames 4 that are to be stored in the magazine 1 are l
? ^'t3's village f I pa 4 pic 1000 P is also 寯え. Therefore, if the stacking pitch P of the magazine 1 changes, the feed pitch also changes, and there is a drawback that it is necessary to replace items that match the pitch even after one cycle.

As a result, conventionally (the stacking pitch P of A magazine 1 is 1,
↑1. Shita A"ti'r: If you do not have a self-angle 4-in screw, the feed screw will be required once, so the work efficiency will increase by +7j%. Yoshiko 7) had the problem of 1-.The problem of 41' is that the lead frame for semiconductor devices is
This is common in general magazines that store not only magazines but also other plate-shaped articles, and which are capable of beach feeding.

Here, −, between EJ Pi and conventional: To solve the river fish,
Transferring the Map J jin This is the same as the Map J jin - a transparent part with the same pitch as the stacking pitch of the magazine is provided for the actuating plate that moves vertically in the KCA direction, and By providing a photoelectric switch for detecting the light section, it is possible to determine the stop point E of the feed screw drive motor. With this device, the stop point of the feed screw is determined by the transparent part of the actuating plate, so even if the stacking pitch of the magazine changes, you only need to change the actuating plate with a different transparent part pitch. Often, the same lead screw can be used.

However, by using a device using such a light sensor, a new problem arises.

Zunawaji detects the final transparent part 4 of the actuator and sends out the plate-shaped article, and the Frenchman finishes and the work on one iJ machine is completed, but after that it starts the turning movement and the same , Pitch feed must be continued for the magazine loaded in another holter that is screwed into the 5-thread screw, or for the replaced magazine. At this time, the same actuator is used. During this return movement, the final stop position of the previous magazine and the initial stop position 1π of the next magazine are the same, and this becomes either the upper or lower edge of the terminal transparent portion. The reason for this is that the feed screw stop signal is output at the moment the light emitted from the light projecting element crosses the edge of the transparent section. After the return movement, the second and subsequent stop signals come from the opposite edge of the transparent part. As a result, I moved back! The first pitch feed distance immediately after iIl is smaller than the set transparent part pitch, and an error of a distance approximately equal to the transparent part width lζ occurs. This means that after the folding movement, the levels of each storage groove of the magazine and the guide rail do not match, and the plate-shaped article cannot be sent out or fed in properly.

The present invention has focused on the above-mentioned problems, and an object of the present invention is to provide a magazine pitch feeding method that allows a magazine holder to perform error-free pitch feeding even when a pitch feeding mechanism using an optical sensor is provided. do.

In order to achieve the above-mentioned object, the present invention provides an actuator plate which is connected to the movement of the magazine by each transparent part of the actuator that moves in a linear direction by the same amount as the magazine. The optical sensor installed on the moving path of the magazine is activated to detect the point at which the feed screw should be stopped, and at the moving end of the magazine, it detects the point in time when the feed screw should stop moving beyond the width of the transparent part provided on the operating plate. The magazine and the actuating plate are configured to be moved back and forth after being applied to the magazine and the actuating plate.

Hereinafter, a specific embodiment of the magazine pitch feeding method according to the present invention will be described in detail with reference to the drawings.

First, a magazine pitch feeding device using an optical sensor for carrying out this embodiment will be explained.

FIGS. 3 and 4 show the overall configuration of a magazine pitch feeding device to which this embodiment is applied. As shown in this figure ζζ, the pitch feeding device has a movable base 12 that is movable along a dovetail groove 11 formed in a machine base 10. This moving base 12 has a motor 13 installed at the end of the base 1o.
It is connected via a Yoshi crank (disk) 14 and a crank arm 15, and can be reciprocated by a motor 13.

The moving base 12 has a feed screw 1 raised vertically.
6 is attached, and the lower end of the feed screw 16 is rotatably supported by a bearing 17. The upper end of the feed screw 16 is directly connected to a reversible motor 18, and the motor 18 is installed on the top plate of a pair of guide frames 19 that are erected on the moving base 12 along the feed screw 16. . As a result, the feed screw 16 can be rotationally driven (!-) by the reversible motor 18. The guide frame 19 has a U-shaped cross section, and the pair of guide frames 1
By arranging the movable bases 9 to face each other, openings are formed at the front and rear in the moving direction of the movable base 12.

The feed screw 16 is divided into an upper half and a lower half, with a right-handed thread 20 carved in the upper half and a left-handed thread 21 carved in the lower half. This type of feed screw 16 # is used to attach a magazine holder into which a magazine 22 to be fed is loaded, and this is a first magazine holder 24 that is attached to the right-hand screw 20 via a nut member 23.
and a second magazine holder 26 attached to the left-hand screw 21 via a nut member 25. The first and second magazine holders 24 and 26 have holder bodies 27 and 28 having a U-shaped cross section and forming a loading space for the magazine 22, and one side of the holder bodies 27 and 28 has the guide Guide grooves 29 provided along both opening edges of frame 19
, 30 are integrally fitted with elevating plates 31 and 32.

Accordingly, each magazine holder 24, 26 is arranged on both sides of the feed screw 16. In this embodiment, the elevating plate 31 of the first magazine boulder 24 is about half the length of the feed screw 16, and has a nut member 23 screwed onto the right-hand screw 20 at its upper end, and a lower end thereof. It is bent and integrated with the holder main body 27. On the other hand, in this embodiment, the elevating plate 32 of the second magazine holder 26 is also about half the length of the feed screw 16, and has a nut member 25 screwed onto the lower end thereof with a left-hand thread 21. Here, each of the nut members 23 and 25 is set to be located at approximately the same distance from the center position of the lead screw 16. Also, the nut members 23 and 25 are set to be located at approximately the same distance from the center position of the lead screw 16. 1 The lower end of the magazine 22 loaded in the magazine holder 24 is stored m# 3/': The kite rail 6 (see Figure 2) is the same
1-f (1 Rigiri 23,
Position ζ where 25 is <tJ↑+rL Lower α in 7-Jj resin 2 of second magazine Porg 264+111:
I'A storage? 7f 3,',,: Kai IS rail 6 and (4) are set at the same level height and lj side. In addition, one of the Porg bodies 27 and 28 (lIl
l It, y ζ
Then, one toy will be decided.

Here, as shown in Figures ㅅ/IX/1 to 0, the first Macadine Holter 7411tll? C, -, are provided with lower limit detection means and pitch detection means. 4. An upper limit switch 35 and a lower limit switch 36 are attached to the inner surface of the upper limit switch 19 of the first frame 24, in which the upper limit switch 31 is fitted. There is. This first eye and T limit 35.36 are placed at a predetermined distance F/', lf t'M within the lifting range of the first macazin holder 24 shown in FIG. On the other hand, each switch 35.367 - the upper input board 37 to be activated
and a lower manpower member 38 are arranged adjacent to the elevating plate 31. Internal input board 37, 380), LIV, positioning candy if, t: The distance from the manual input position to the upper limit switch 35 of the input board 3γ to the input position to the lower limit switch 36 by the lower input M381ζ is the loading magazine 22o) Required elevation distance 11i1F, . . .: Set so that the distances are less and the distances are the same. From this detection means, a detection signal is manually applied to the motor 13, L8 in order to switch the rotational direction of the feed screw 16o) and move the moving base 12. In this case, an optical sensor may be used as the peak detection means.

One force, the opposite side force side frame i9 (lIllko(, j1 front eighty i'1) starts the reverse motor 18 with peace of mind to perform pitch feed operation, and outputs a signal. Pitch detection means is provided. Specifically, as shown in FIG. , Kaidofl
/- Consists of an optical turtle switch 40 provided on the inner surface of the frame 19. The actuating plate 39 is formed of a rectangular plate piece, and the vertical direction of the vertical plate 39 is a straight dowel-shaped plate 13 in the vertical direction.
He was defeated by Pol h Q'P.

In such an actuating plate 39, a large number of through holes 41 are linearly arranged along the outer edge of the machine 22 at intervals of (pitch 1 equal to pitch P) parallel to the stacking direction of the machine 22. It is perforated. These through holes 41'6i allow light to pass through from the photoelectric switch 40, and are provided in at least the same number as the storage grooves of the magazine 22. Therefore, the total pitch of the through holes 41 N P i,l The total pitch of the storage grooves of the magazine 22 Consistent with NP. This knot! 14. Magazine 22 and operating plate 3! l': l; 41 to 1 'l', 1'
This is what makes up Wp. In addition, the photoelectric switch 4
0 is composed of a pixel element and a light receiving element, and the outer edge of the actuating plate 39 is inserted into the gap between the pixel elements.
Suno Narashi 3V). In this case, Bi'Kame Sweets Sen4
The through holes 41 arranged in the actuating plate 39 allow the optical path of 0 to
l, if^. The photoelectric switch J4 () detects that the optical path matches the through hole 41, and outputs this detection signal to the reversible motor 18 to stop the rotation of the feed screw 16. 1η motor 18 is connected to the motor 18 by 1 ratio.

11 [The operation of the pitch feeding device having such a configuration is as follows. As shown in FIG.
5 to the lower limit position, and then move the first magazine holder 24 (1
, 111, connect the center of the magazine 22 to the kite rail (2nd r
(See Me 1) ((Make it match.
, when the device is started up, the motor 18 rotates forward and the first macazin polder 24 (first lower blade, second
Magazine holder 26 moves upward. Here, the first magazine boulder 24 starts to move downward from the upper limit position, and at the same time, the actuating plate 39 also moves downward together. When the photoelectric switch 40 detects the F-most through hole 41, a rotation stop signal is output to the reversible motor 18, and the rotation of the feed screw 16 is stopped. During the stop time, a lead frame is sent out on the supply side of the processing line.A signal indicating that one lead frame has been sent out from the machine 22 (input/output redundant signal) is sent to the first center. (jl's 2 figure) 1st
~Sensor 9A.

9B) to 2. Sokero J-1 possible j1θ mode 18 is restarted and the next i&9 hole 414; photoelectric switch 40
Wait until it is detected 1. 'f-lii,) rotate 16,
Intermittent stoppage is effected in response to the opening of pin 7-1 of the two-way opening 41. In this case, through hole 4
The pitch P of 1 has a 1-to-1 correspondence with the lamination pitch PL of the macajin 22, and the pinch of the makajin 22 is adjusted according to the lamination pitch P. To be held ◇η1,11 wonojin hori 24fl
When the shipping work is completed,
27th J-Gym Volter 261; Lie-1, Frame 1/-me is in the position where it can be delivered (-raised).

17J) When the lower BIS input board 38 of the Zinholter 24 is manually operated from the lower limit switch 36, the morph 13 is transferred to the d section 1lj11 and the moving base 12 is sent out, and the morph 13 in the 1st and 2nd makan port 26 is moved. 22 and the guide 1 knob, and at the same time turn the feed screw 16 in the reverse direction 11j.
Output to 8. To this, go up, 2nd Makazinpolda 26
J: 17th Gazin Holder 240
) , k outward tilt + Rf + (C conversion shift, tll, 2 magazine holster 26 lead frame delivery operation is possible. Here, the second magazine volta 25112)
(The bit detection means l on the first magazine holder 24 side performs the same operation in the reverse direction jjj as described above. In this case, the pitch P of the through holes 41 of the actuating plate 39 is The stacking pitch P of the loading machine 22 may be the same as that of the stacking machine 22.

In ancient times, when the device described in 1-1 was used, as mentioned above, the first
After the completion of sending the Macazine poruda 24 from the Macazine 22,
To start the feeding operation from the magazine 22 of the second magazine bolt 26, the first feeding pitch (ζ) immediately after the turn-around movement, a bubble difference occurs.
(Not shown in Bl. Fig. 7 (A) shows the state in which the actuating plate 39 and the first magazine holder 24 have reached the lower 14 position. Detection at the time of stop X: 42 is transparent. When reaching the lower side, a stop signal is output from the optical switch 4°, so at that position, the first makajin polder 24
The final lead frame is sent out from the side 7 cardin 22. Next, the lead frame is sent out from the second magazine bolter 2611111.9? 'i Sulf; (, same-action 4
Since f739 is used, as shown in the same figure (] 3), 7 is at the stop position of the previous Mabjgin 22, that is, the first lead frame is 1.1 input and output position M (the broken line in the figure is IK Bawaru Detection Bi42). Then, the actuating plate 39 is reversed and enters the pitch movement l'-, so that the output point of 211111'μI inno 4 is detected)L42 reaches the upper side of the through hole 41. The position is old. As a result, the folding transfer force I white? In rare cases, 14 re-vibration (than 1 setting p-p)
It becomes much shorter. In this case, the error (tri') is approximately equal to the diameter a of the IJ hole 41 because it can be easily detected by dots.

Therefore, Thu 5J and others will move up from -F1/1 to move 41J + 1゜, or -1x will turn from 1 move to downward move l)'1. ', 8.7 move 4Jj to the end of the chair (J
I gained some good ancient knowledge. That is, in Fig. 7(c), 71〈
1-vt, + <, ¥i't 1 Magazine holder 24
After the feeding period from the side is completed, the actuating plate 39 is at least transparent [
1,41 hole II''j diameter equivalent (to be exact, error HH, x
) only move I6 over S. Then, using this position as the turning point, the second manonosin holder 26 1111 Puha et al. -I'm on the other side ii'￥kichilS, IE's beer is 1,000P.
Things that are pleasant l f, c. Here, super 11 like this
^ In the old, forward process, and return process where the movement is performed, a shank 7 whose distance is approximately equivalent to the diameter of the through hole 41 is generated overall. The reason for this (4, detected in the forward process) is to detect Y and 42 to the lower side of the straight hole 41 at 11 (or G is the upper side), and in the backward process tlj
, -1=side part (or lower I/! part) is detected. This can be solved by adjusting the mounting position of the 17th gas cylinder holder 24 and the second machining hole 26 to the 3-input screw 16. .

Match the delivery height level 1) It will be a good success. The nut member 2 from the center of the feed screw 16
3.25) It is sufficient to position only the nut member 25 of the 27th bolt holder 26 at a distance corresponding to the diameter a of the through hole 41.

A specific embodiment of the present invention using the pitch feeding device will be described below with reference to FIG. 8. Figure 8 to 4 1st Macazine Polg 24 - WJM Magazine 221, rr
: 2 Makazine Polda 26 to 222
-4-0 First, 'J,,', T i-7 frame 1 starts sending out sea from old J1 Figure 8 (5
)((It will be shown.)
111 where 4i η Idemitsu 42 reached the lower side of 1? It is a point. This (L: lead frame 1 at the uppermost position in the first machining machine 221).

It is assumed that the insertion height into level 1 is the same as the height of insertion into level 1 (Fig. 2). )
When the lead frame 1 is laid down, the magazine 22
It is derived from J from 1. The uppermost position of the second magazine 222 is glued to the uppermost position of the second magazine 222.
It is set to 1'f4, which is the width a of 1.

Next, after the lead frame 1t1 is pulled out from the 7th magazine 221, the 17th magazine 221 is lowered by 1 pitch (P) as shown in s+yl (I31), but at this time, the 2nd magazine 222 is also lowered by the same pitch. CP)”
2 ke 1 is touched. Next, as shown in Q, after pulling out the lead frames 1 (, 2), the #A1 magazine 221 is lowered by one pitch, and at the same time the second magazine 222 is raised by the same pitch.This is done until it reaches the uppermost position of the lead frame R3. .

Next, as shown in FIG.
After the lead frame 1 (3) in the uppermost position in the lead frame 1 is pulled out, the magazine 221 is lowered by a distance (a + b) -F from the diameter a of the through hole 41. This is shown in Fig. 5. This can be easily solved by adjusting the spacing between the upper and lower limit switches 35° and 36 and the JIR positions of the upper and lower input plates 37 and 313Q shown in FIG.

As a result of this operation, the lead frame R4 at the lowest position of the second magazine 222 is raised to a level b above the level L.
lζ is set. Simultaneously with the over-travel operation, the movable base 12 is moved by the motor 13 to align the center line of the 44.2 magazine 222 with the guide rail.

After this, the lead frame is sent out from the second magazine 222, but this pitch feed is carried out in the same manner as '1'.
f139 and the photoelectric switch 40. That is, as shown in FIG. 8 (El), the first magazine 221 is raised by 1].
I was forced to wrap up for about 1 time.

After lead frame l-1 is pulled out, the same (1・
1 as shown in ζζ fv'3; 2 magazine 222
1,000F down. Incidentally, while the Liet Frame Ro-4 is being completely pulled out, the empty first makajin 221 is crossed with another one.
The lead frame l from the stage onward is also pulled out, and the same ((I
As shown in J-7, the top 1 blue lead frame l\1 is also taken from the second magazine 222. As a result, the sending operation from the 27th gin 222 is completed.

In addition, the final lead frame 1 from the 27th engine 222
(・After 6 is pulled out, move the same macajin 222 again Ll+C) (This C can be 1) and the same distance ill'). Loaded11. The lowest position lead frame 1 (7) of the first magazine magazine is set at a position that is C below the insertion level L. During this time, the first magazine 221 is moved to the delivery position ( 6, and then the lead frame is pulled out from the first magazine 221 ((■)).

Thereafter, while the lead frames 1 (, 7) are being pulled out, the fP and 2 magazines 222 may be replaced with other ones, and the process can be returned to the first step.

Like this, Cζ, Mokujin example ζ, right? (:11 Makazin 2
Even if the FB layer pitch of 2 is changed, the feed screw 16
Change '71 - While taking advantage of the advantage of the device d, which allows you to easily change the pitch feed, it is possible to eliminate errors that occur when the pitch feed is repeated, so it is even better. Each storage position in the magazine 22 and the level f of the guide frame L can be accurately adjusted. In addition, the level difference that occurs during the reciprocating process is also determined in advance between the first and second magazine holders 24.260)? There is an advantage that this problem can be solved by adjusting the mounting position to the screw 16.

As explained above, according to the present invention, the actuating plate moves in the linear force direction by the same amount as the magazine in conjunction with the movement of the magazine, and each light transmitting plate has the same pitch as the stacking pitch of the magazine. From this section, an optical sensor installed in the moving path 11 of the actuating plate is activated to detect when the feed screw should be moved, and also detect the movement of the magazine, iji, iji, etc.
4 at i; t, through hole h+ provided in the actuator
After giving the magazine and actuator an excess movement of + width, the magazine and actuating plate are folded back and moved 441i11, so the same one protrusion position IN can be fixed during the forward process and the wrinkle process, As a result, when performing a 4-inch reversing movement, an immediate result is obtained (the error pitch feed can be caused by a 9-9 error in the magazine).

[Brief explanation of drawings]

11th 1 (vertical 1 ↑ side view of 17Jj gin, Figure 2 does not show the lee 1-frame delivery form 1p from the magazine, but the side [
Figure 3 is a cross-sectional view of the actual jfITi example 1 (applied magazine pitch feeding device), Figure 4 is the 3rd
IV-IV line tl:li surface in the figure, 2. [Figure 15 is I!
P, V-V cross-sectional view in Figure 4, Figure 6 is the same\II-Vl
Thin 11J [Side view, ・Figure 17 (A+, fBl is a positional relationship diagram of the actuating plate showing the jt+↓ difference generation state due to the same installation 1, times fcl, O) I C, i book"jj 11 &
C, J: Z+ operation 8M (7) position It relationship diagram,
@Figure 8 (A1-0.1 shows each process diagram of the pitch feed position shown in this method. 16 Feed screw, 19 ・Slope fly 11.22.2
21.222 Magazine, 23.25 Nut member, 24.26 Magazine holder, 31.32 Elevating plate, 39 Operating plate, 40...i electric switch, 41... Induction hole, 42. Idemitsu. Agent Patent Attorney Osamu Rikawa Figure 4 22 2.2 Figure 5 Figure 6 Figure 17 (A) (B) (C) (D) (
A) (Ding (C) (--- (B) (] (D) Fig. 8 (E) (F) =) -) 2 4゛1 (G) (H) -) -2 - 1: ba■'rl, 6. l hit ten (-

Claims (1)

[Claims] (1) Intermittent rotation of the feed screw to store the plate-shaped article at the Z location and the magazine I-pitch, which is placed in the Z magazine, and the pitch Q of the magazine for rebit feeding; In the writing style, the magazine moves in conjunction with the movement of the magazine.
The light-transmitting parts of the actuating plate, which moves in the linear direction by I, have the same pitch as the stacking pitch of the magazine, and actuate the optical sensor installed on the moving path of the actuating Ajy, thereby stopping the feed screw. At the moving end of the magazine, at the moving end of the magazine, there is no setting for the selection, one chant to the transparent sound 1, 42 super 1 movement 4-7 nonojin 414
After giving it to the author and the author, the magazine and the magazine were added to the magazine on January 1st;
How to send a pitch to a magazine that results in a loss.