JP2529974Y2 - Magazine detector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magazine detecting device.

[0002]

2. Description of the Related Art For example, in a semiconductor manufacturing apparatus, a loader magazine, a processing apparatus, and an unloader magazine are arranged in this order. It is being stored in. Taking the loader side as an example, it has been put to practical use that the magazines that have been emptied by the supply of the lead frame are sequentially discharged to a discharge table, and a new full magazine is automatically supplied to the loader position.

Since the number of magazines that can be stored in the discharge table is limited, it is necessary to detect that empty magazines of the maximum storage number have been stored in the discharge table. For this reason, conventionally, a photoelectric sensor is provided at the end of the discharge table, and a full signal is output when the photoelectric sensor detects the first magazine of a magazine group that slides in a press-down state on the discharge table. Was.

[0004]

However, since the conventional magazine detection device directly detects the magazine itself, the amount of reflection of light emitted from the photoelectric sensor varies depending on the material and shape of the magazine, and the detection state of the magazine is different. Has become unstable or undetectable.

In some cases, such as a limit sensor, the detection is performed by a contact type. In this case, however, the detection lever is operated by the magazine itself. Has to be changed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magazine detecting device which can always detect a magazine stably without being affected by the material and shape of the magazine.

[0007]

According to a first aspect of the present invention, there is provided a magazine slide, a slide member for sliding a magazine in one direction on the magazine slide, and a slide member for the slide member. A driven member that moves together with the magazine by contacting the magazine that slides on the magazine slide under operation, and a detector that detects that the driven member has reached a predetermined position. It is characterized by.

According to a second aspect of the present invention, a weight member is provided on the driven member according to the first aspect.

[0009]

According to the present invention, the arrival of the magazine at a predetermined position is detected by detecting the driven member that moves together with the magazine by the detector.

[0010]

1 to 3 show an embodiment of the present invention.
This will be described with reference to FIG.

FIG. 1 is a perspective view showing a configuration of a magazine detecting apparatus according to a first embodiment of the present invention, FIG. 2 is a front sectional view of FIG. 1, and FIG. 3 is a front sectional view showing a state different from FIG. is there.

In FIG. 1, a magazine holder 1 is movable up and down between a lead frame transport mechanism (not shown) provided at an upper part of the figure and a magazine discharge mechanism 10, and the lead frame is removed by the lead frame transport mechanism. The magazine that has been emptied is received, and the magazine is positioned at a delivery position with respect to the discharge table 11. The transfer position at this time is a position where the support surface of the magazine 2 in the magazine holder 1 and the support surface of the magazine 2 in the discharge stand 11 are at the same level. The pusher 12 is arranged to face the discharge table 11 with the movement path of the magazine holder 1 interposed therebetween, and pushes the magazine 2 from the magazine holder 1 onto the discharge table 11 by driving with an air cylinder. A groove 13 is formed on the upper surface of the discharge table 11 in the direction in which the magazine 2 is discharged, and a sliding body 15 is slidably provided along the groove 13. A guide 15a is formed at the bottom of the sliding member 15 to make the bottom surface a good glossy surface.
The sliding direction of the sliding body 15 is regulated by engaging the groove a with the groove 13. Further, the sliding body 15 has a weight 14 having a predetermined weight on the back surface thereof. In the groove 13, a photoelectric sensor 16 is provided so as to detect the sliding body 15.

Next, the operation will be described.

First, as shown in FIG. 2, the magazine holder 1 holding the empty magazine 2 descends from the lead frame transport mechanism (not shown), and the magazine 2
Stop at the delivery position. After the magazine holder 1 is stopped, the pusher 12 at the standby position is operated, and the first magazine 2 is moved to the discharge table 1 as shown by the one-dot chain line in FIG.
Extruded onto one. Note that the slide 15 is attached to the discharge table 1 in advance.
1 is moved to the introduction end side of the magazine 2. Therefore, the magazine 2 moves on the discharge table 11 in a state of being sandwiched between the sliding body 15 having the weight 14 and the pusher 12. After this, the pusher 12 returns to the standby position,
The magazine holder 1 moves up to the lead frame transport mechanism side. Each time the magazine holder 1 holds the second and third empty magazines 2 and sequentially descends, the operation of discharging the magazine 2 onto the discharge table 11 by the above operation is repeated. Then, as shown in FIG. 3, in this embodiment, when the magazine holder 1 is positioned at the transfer position of the fourth magazine 2 and the pusher 12 pushes the magazine 2 onto the discharge base 11, the magazine holder 1 comes into contact with the magazine 2 and moves. Sliding body 1
4 reaches the detection area of the photoelectric sensor 16. Then, the photoelectric sensor 16 outputs a detection signal of the sliding body 14 to a control device (not shown). The control device determines from this signal that the maximum number of magazines 2 has been stored on the discharge table 11 and outputs a full signal. Output.

According to the above-described embodiment, the fact that the maximum number of magazines 2 has been stored on the discharge base 11 is not detected directly by the magazine 2 but by the discharge base 1 together with the magazine 2.
Since the detection is performed by detecting the sliding body 15 moving on the upper surface 1 by the photoelectric sensor 16, stable detection can be performed without being affected by the material and shape of the magazine 2.

A weight 14 is mounted on the sliding body 15, and when the magazine 2 is pushed out by the pusher 12, the pushed-out magazine 2 or all the magazines 2 on the discharge table 11 are held by the pusher 12 and the sliding body 15. , It is possible to prevent the magazine 2 from tipping over by pushing the pusher 12 even when the width of the magazine 2 is small.

Next, a second embodiment of the present invention will be described with reference to FIG. The same members in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

In the example shown in FIG. 4, the sliding body 15 that moves together with the magazine 2 is detected via the swing mechanism 30. In other words, in the drawing, the L-shaped swing arm 31 is centered on the support shaft 32 provided in the groove 13 corresponding to the position of the sliding body 15 when the maximum number of magazines 2 are stored on the discharge table 11. Is provided to be swingable. Swing arm 3
A roller 33 is supported at the end of the roller 1. The swing arm 31 is urged in a counterclockwise direction about the support shaft 32 by a spring 34 so that a stopper 35 provided at an intermediate portion of the swing arm 31 protrudes from the side wall of the groove 13. Abuts on the block 36 that has been set. At this time, the roller 33
Are projected from the upper surface of the discharge table 11. The opposing surfaces of the stopper 35 and the block 36 constitute electric contacts, and a control device (not shown) detects the open / closed state of both contacts.

Next, the operation will be described. As in the first embodiment, the magazines 2 held in the magazine holder 1 are sequentially pushed out and stored on the discharge table 11. At this time, the swing arm 31 is at a position shown by a solid line in FIG. 4, and the stopper 35 and the block 36 are in a contact state.
When the fourth magazine 2 is pushed out by the pusher 12, the sliding body 15 having the weight 14 presses the roller 33. As a result, the swing arm 31 moves the spring 3
Swings as shown by the dashed line against the urging force of 4,
The stopper 35 is separated from the block 36. Therefore, a control device (not shown) detects this separation state and outputs a full signal.

In the second embodiment, similarly to the first embodiment, stable detection can be performed without being affected by the material and shape of the magazine 2.

In both of the above embodiments, the discharge table 11
For example, a plurality of detectors are arranged along the sliding direction of the magazine 2 on the discharge table 11 to detect when the four magazines 2 are stored on the discharge table 11. Each time one magazine 2 is discharged, the position and number of the magazines 2 on the discharge table 11 may be detected via the sliding body 15.

The present invention is not limited to the detection of a magazine in a magazine discharge table, but can be widely applied in a technical field using a magazine.

[0023]

According to the present invention, it is possible to always stably detect a magazine.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a magazine detection device according to a first embodiment of the present invention.

FIG. 2 is a front sectional view of FIG.

FIG. 3 is a front sectional view showing a state different from FIG. 2;

FIG. 4 is a front sectional view showing a magazine detecting device according to a second embodiment of the present invention.

[Explanation of symbols]

 2 Magazine 10 Magazine discharge mechanism 11 Discharge stand (magazine slide) 12 Pusher (sliding member) 14 Weight 15 Sliding body (following member) 16 Photoelectric sensor (detector) 31 Swing arm 33 Roller 35 Stopper 36 Block

Claims (2)

(57) [Scope of request for utility model registration] 1. A magazine slide, a slide member for sliding a magazine in one direction on the magazine slide, and a slide on the magazine slide under the action of the slide member. A magazine detection device comprising: a driven member that moves together with the magazine by contacting the magazine; and a detector that detects that the driven member has reached a predetermined position. 2. The magazine detecting device according to claim 1, wherein a weight member is provided on the driven member.