JPS6331966A - Workpiece discharge method and device therefor - Google Patents

Abstract

PURPOSE:To enable a workpiece discharge device to be compact and to cope with handling of workpieces having different lengths, by making the transfer stroke of satisfactory products different from the transfer stroke of unsatisfactory products to stack them such that unsatisfactory products are projected from the satisfactory parts by a predetermined length. CONSTITUTION:Along a workpiece guide device which has been automatically set in accordance with the width of a workpiece W, the workpiece is transferred by means of a transfer pawl 46. The transfer distances of workpieces W are made to differs from each other in dependence upon whether the workpieces are satisfactory or not, and therefore, when a workpiece Wg is satisfactory, the transfer pawl Wg comes to a position 46a while a workpiece Wng is not satisfactory, the pawl 46b comes to a position 46b. Further, it is determined by an image processing device in a working device body whether a workpiece W is satisfactory or not, such as that when a pattern is not present at the corresponding part, the image processing device delivers an unsatisfactory product signal to a workpiece discharge device D to determine the displacement of the pawl 46. Accordingly, it is possible to discharge the products within a small space thereby the workpiece discharge device may be formed in a compact size.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and an apparatus for discharging a flat workpiece processed by a main body of a processing apparatus.

[Prior Art] In this type of work discharge, it is customary to sort out non-defective products and defective products. However, in conventional workpiece discharging methods and devices, after the workpieces are once discharged to the workpiece receiver, non-defective products are stored in the non-defective stocker and defective products are stored in the defective stocker via a conveyance device such as a conveyor device and a conveyance switching device. It was something.

[Problems to be solved by the invention] According to such a known work discharge method and device,
Although the rate of defective products is extremely small, the workpiece ejecting device becomes a combustible object and requires a very large installation space.

An object of the present invention is to allow workpieces to be discharged in a small space while distinguishing between good and defective products.

Another object of the present invention is to provide a compact work discharge device at low cost.

Still another object of the present invention is to provide a workpiece discharging device that can be used with processing devices that process a wide variety of workpieces, particularly workpieces of different lengths.

[Means for Solving the Problem] The feature of the workpiece discharging method according to the present invention is that the workpiece transfer amount is varied depending on whether the workpiece is a good product or a defective product, and the good and defective products are separated from each other in substantially the same plane space. , the defective products are stacked on top of each other so that they protrude by a certain amount from the non-defective products.

The workpiece discharging device according to the present invention is characterized by a workpiece transfer device in which the transfer amount of the workpiece is different depending on whether the workpiece is a good product or a defective product, and a guide body that guides the workpiece transferred by the workpiece transfer device. and a work guide device having a release drive means for retracting the guide body to release the work on the work receiver.

Another feature of the workpiece discharging device according to the present invention is that a fixed stopper that aligns the end surface position of defective products is spaced at a constant interval in the workpiece transfer direction with respect to a movable stopper that is supported such that it can be displaced and aligns the end surface positions of non-defective products. The stopper is arranged so that, when discharging non-defective products, the non-defective product stopper is moved via a drive means to a position where it does not interfere with the transfer of defective products.

Still another feature of the work discharge device according to the present invention is that the above-mentioned non-defective product stopper and the above-mentioned defective product stopper are mounted on a moving body that is supported so as to be movable in the direction in which the work is to be transferred.

[Example] Before explaining the present invention, first, a schematic configuration of a processing apparatus to which the present invention is applied will be explained with reference to FIG.

This processing device is used for flat workpieces (in this example,
The processing target is a printed circuit board (printed circuit board) W, and includes a processing device main body A and a workpiece mounting table that is movably arranged on the left side of the processing device main body A to place the unprocessed workpiece W. B, an air suction type work supply device C that supplies the topmost workpiece W placed on the workpiece table B onto the table 1 of the processing device main body A one by one, and the processing device main body A workpiece ejection device according to the present invention is installed on the right side of the processing device main body A to eject the workpiece W that has been processed by drilling etc. It consists of a workpiece receiver E that is movably disposed on the right side of the processing apparatus main body A below the workpiece discharge device to receive the workpieces W. Since the workpiece mounting table B and the workpiece supply device C are not directly related to the gist of the present invention, further detailed explanation will be omitted.

Here, the processing device main body A will be briefly explained.

The processing device main body A is equipped with a video camera 2 on a table 1, and this camera 2 receives an image of the wiring pattern (not shown) of a workpiece (printed circuit board) W, and transmits this image signal to a built-in well-known video camera 2. Image processing device (not shown)
The position of the pattern to be machined is identified through image processing 1, and a hole is drilled using a drill device (not shown) located below the table and directly below the camera 1. , this hole drilling is done prior to processing.
The workpiece W supplied onto the table 1 by the workpiece supply device C is positioned by a workpiece positioning device disposed on the lower surface of the table 1.

This workpiece positioning device also functions as a detection means for detecting the dimensions (length and width) of the workpiece W to be machined, and as shown in FIG. A longitudinal positioning mechanism 3 for determining the position of the work W in the width direction (Y-axis direction) and a width direction positioning mechanism 3 for determining the position of the workpiece W in the width direction (Y-axis direction).

Since the longitudinal positioning mechanism 3 and the width direction positioning mechanism 3 have substantially the same mechanism, the detailed structure of the longitudinal positioning mechanism 3x will be explained with reference to FIGS. 3 and 4. do.

In Fig. 2, 4.5 is a support plate fixed to the lower surface of the table 1 so as to hang down, and a guide rail 6 is fixed between both support plates 4.5.
XX It's gone. The guide rail 6 has a U-shaped cross section, and supports the carrier 7x so as to be movable in the length direction (X-axis direction). As clearly depicted in Fig. 3, an air cylinder 8 is installed on the underside of the carrier 7.
The shaft of the air cylinder 8 passes through the carrier 7, and an elevating plate 98 is fixed to its protruding end. Two guide shafts 10.10 are vertically installed on the lower surface of the lifting plate 9, and both guide shafts 10.10 slidably pass through bearings 11 provided in the carrier 7e. are doing. An x holder 3 that rotatably supports a rotating roller 12 is attached to the elevating plate 9 with the following structure.

That is, the holder 3 has two guide shafts 14X, 1
5X protrudes rearward, and both guide shafts are slidably fitted into a block 16 (see FIG. 2) fixed to the -L surface of the elevating plate 9.

As shown in FIG. 2, the guide shaft 14 is connected to the block 16.
is slidably passed through the

It is being fired in front of X.

Next, the driver stage for moving the carrier 7 will be explained.

In Figure 3, drive motor (stepping motor) 1
The motor mounting plate 19 that supports 8 is
X
- It is fixed to the lower surface of the pull 1, and a timing gear 20 is fixed to the shaft of the motor 8.

Timing gear 21 is below motor 8.

X
X22 is located, and a rotating shaft 23X to which these are fixed is rotatably supported by the sides 11iE24, 25. Side plate 2.4.25 has a mounting number of 26
X
This mounting plate 26 is fixed to the above-mentioned support plate 5x. Timing gears 20 and 21 and timing gear 22 and X shown in the second diagram
Timing belt 28X between X timing gear 27 and X timing gear 27
, 29X is wound. That is, the rotation of the motor 8 is caused by the timing gear X 20 , the timing belt 289 and the rotating shaft 23 .

X
The signal is transmitted to the timing belt 29 via the timing gear 22. The above-mentioned carrier 7 is moved in the length direction (X-axis direction) of the workpiece W by the rotation of the imming belt 29.

The width direction positioning mechanism 3 is the length direction positioning mechanism 3
Since it has substantially the same mechanism as the above, a detailed explanation will be omitted, but corresponding parts are given the reference numerals with the subscript X of the parts of the longitudinal positioning mechanism 3 replaced with y.

Further, a fixed side positioning member (pin) 30 for determining the reference position in the length direction of the workpiece W is disposed on the table 1 with the following structure. That is, as shown in FIG. 4, a bracket 32 to which an air cylinder 31 is attached is fixed to the lower surface of the table 1, and the positioning member 30 slidably passes through a bearing 33 provided on the bracket 32. However, it is configured to protrude to the upper surface of the table 1 via the cylinder 31 or retreat from the upper surface of the table 1.

On the other hand, a fixed-side positioning member 33 for determining the reference position of the workpiece W in the width direction is fixed to a workpiece gripping means 34 shown in the second figure. The workpiece gripping means 4 is located at the position shown in FIG. 2 in the initial state, but after the positioning of the workpiece W is completed, it grips one end of the workpiece W and moves to the well-known XY table mechanism provided in the processing apparatus main body A. (not shown), and thereby the workpiece W held by the workpiece gripping means 34 is moved vertically and horizontally toward the drill center 0.

In addition, in FIG. 2, 1a is the roller 12.

12 is a long groove bored in the table 1 along the moving direction, and 35 and 36 are workpiece sensors that detect when the workpiece W has been moved to the reference position.

Here, the operation of positioning the workpiece W supplied onto the table 1 of the processing apparatus main body A by the workpiece supplying device C will be explained.

In the initial state, the roller 12 shown in FIG. 3 of the longitudinal positioning mechanism 3X and the positioning member 30 shown in FIG.
are both submerged from the top surface of the table 1. The rollers 12 of the width direction positioning mechanism 3 are also sunk from the top surface of the table 1. In this state, the workpieces W are fed one by one onto the top surface of the table 1 of the processing apparatus main body A by the workpiece feeding device C shown in the first figure, but the accuracy of this feeding position is relatively rough, and In Figure 2, two orthogonal end faces W of a workpiece W.

Wb is supplied to a position slightly apart from the positioning members 30 and 33 on the fixed side. When the workpiece W is supplied onto the tape, the cylinder 8.8 is operated and the elevating plate 9.9 is raised, and the rollers 2 and 12 are accordingly projected onto the upper surface of the table 1. At the same time, the positioning member 30 is also projected onto the upper surface of the table 1 via the cylinder 31 (see FIG. 4).

First, the drive motor 8X of the longitudinal positioning mechanism 3 is driven, and the end face Wa of the workpiece W is aligned with the positioning member 3.
0, that is, the end surface W of the work W
The end surface W of the substrate W is moved by the rollers 12 until it reaches a position where it completely crosses the workpiece sensor 35. is pushed forward. Then, the drive motor 8 of the width positioning mechanism 3 is driven until the end surface Wb of the workpiece W comes into contact with the positioning member 33, that is, the end surface Wb of the workpiece W reaches a position where it completely crosses the workpiece sensor 36. Until, Koro 12
The end surface W of the workpiece W is pushed forward by this.

When the positioning of the workpiece W is completed in this way, the rollers 2, 12 and the positioning member 30 are moved to the corresponding cylinders 8, 8, . ．． 31, the substrate W is held by the holding means 34 and moved to the right on the table 1, and a desired hole is drilled at the drill center 0 position via a drill device (not shown). Processing is performed. After the predetermined hole drilling process has been completed, the workpiece W is sent to the workpiece discharge device.
The workpiece is discharged onto the workpiece receiver E (see Fig. 1).

Therefore, to explain the workpiece discharging device according to the present invention, this workpiece discharging device includes a workpiece transfer device F that transfers the workpiece W fed from the processing device main body A, and a workpiece transfer device F that transfers the workpiece W transferred by this workpiece transfer device. It is roughly divided into a work guide device G that guides the workpiece W, and a stopper device H that aligns the leading end surface of the workpiece W to be discharged.

First, to explain the workpiece transfer device F, in FIGS. 5 and 6, support plates 38 and
9 and 40 are suspended and fixed, and both ends of the two guide shafts 41 and 42 are held by these support plates.

A movable body 43 is slidably supported on both guides 41 and 42, and this movable body is reciprocated left and right by an endless belt 45 driven by a drive motor 44. Further, a plate 48 on which a work transfer claw 46 is rotatably pivoted by a shaft 47 is fixed to one side of the movable body 43.
It can be moved to the position indicated by the chain line in FIG. 6 by an air cylinder 49 whose rear end is rotatably pivoted to 8.

The f-new workpiece W processed by the processing device main body A is the sixth
The workpiece is drawn into the workpiece ejecting device by two drawing rollers 50 and 51 shown in the figure. At this time, the transfer claw 46 of the work transfer device F is retracted to the chain line position via the cylinder 49. When the workpiece W is completely drawn into the workpiece discharging device, the transfer claw 46 is lowered to the solid line position by the cylinder 49, and then the drive motor 44 (see FIG. 5) is driven. As a result, the transfer claw 46 moves to the right together with the movable body 43, and the rear end surface of the workpiece W is pushed by the transfer claw 46 and is advanced to the right.

At this time, the work W is guided by a work guide device G configured as follows.

As shown in FIG. 9, this work guide device G has a pair of guide bodies 52, 52a each having a U-shaped cross section and guiding both side edges of the work W.

Guide body 5 located on the right side in the direction of movement of the workpiece W
2 is attached to the lower surface of the moving body 53 as shown in FIGS. 7 and 8. That is, air cylinders 56.57 are connected to the lower surface of the moving body 53 via brackets 54.55.
The shaft of the cylinder 56 passes through the outer surface of the guide body 52, and the shaft of the cylinder 57 passes through the hole 58 formed in the guide body 52, and the shaft of the cylinder 57 passes through the hole 58 formed in the guide body 52, and the shaft of the cylinder 57 passes through the hole 58 formed in the guide body 52. are connected to each other. In addition, the guide body 5
The lower surface of the moving body 54 is slidably received by a part of a workpiece dropping guide 60 that is fixedly suspended from the lower surface of the movable body 54 . The moving body 54 is slidably supported by two guide shafts 61 and 62, as shown in FIG. It is held by support plates 63 and 64 that are Further, a feed screw 65 into which a part of the movable body 54 is screwed is rotatably supported on both support plates 63 and 64.
The feed screw 65 is rotationally driven via a drive motor 66 and a drive belt 67 attached to the support plate 64.

Guide body 5 located on the right side in the direction of movement of the workpiece W
3, similarly to the guide body 52 shown in FIG.
6a and 57a, it is possible to move forward and backward independently. However, as shown in FIG. 5, the cylinders 56a and 57a are attached to a support plate 69 that is fixed to a workpiece dropping guide JOa that is suspended and fixed to the lower surface of the top plate 37.

Here, positioning of the work guide device G will be explained.

The moving body 54 is moved by rotationally driving the feed screw 65 via the drive motor 66 and the drive belt 67,
At the same time, the guide body 52 changes its position.

The position of the guide body 52 is automatically adjusted according to the width of the work W supplied to the main body A of the processing apparatus. That is, in the workpiece positioning device shown in the second figure that positions the workpiece W supplied on the table 1 of the processing device main body A, the amount of movement of the width direction positioning mechanism 3 from the initial position is expressed as the number of pulses supplied to the drive motor 8. The guide body 52 shown in FIG. 5 is automatically moved by the same amount as this movement amount of the positioning mechanism 3. The amount of movement of the guide body 52 is detected by a slit disk 68 fixed to the feed screw 65 and a detector (not shown) that cooperates with the slit disk 68.

The workpiece W is transferred by the transfer claw 46 as shown in FIG. 6 along the workpiece guide device G whose position is automatically set according to the width of the workpiece W in this way. The transfer amount varies depending on whether the workpiece W to be discharged is a good product or a defective product. That is, when the workpiece W is a good product W, the transfer claw 46 is moved to the 46th position, and when the workpiece W is a defective product, the transfer claw 46 is moved to the 466th positiong. Whether the discharged workpiece W is a good product or a defective product is determined by the image processing device of the processing device main body A described above. For example, if the pattern is not in the desired position or if the hole is not drilled in the desired position even after processing, a defective product signal is supplied from the image processing device to the workpiece ejecting device, and based on the As described above, the amount of movement of the workpiece transfer claw 46 is determined.

As shown in FIG.
It includes a movable stopper 70 for good products and a fixed stopper 71 for defective products.

The movable stopper 70 is rotatably attached to the side surface of a mounting plate 73 which is fixed to the side surface of the movable body 72 via a shaft 74, and the fixed stopper 71 is fixed to the lower end surface of the mounting plate 73. The movable stopper 70 can be retracted to the chain line position via an air cylinder 75 whose rear end is rotatably attached to the mounting plate 73. As shown in the fifth figure, the movable body 72 is slidably supported by the aforementioned guide shafts 41, 42, and the movable body 72 has a feeder rotatably supported by the support plates 39, 40. A screw 76 is threaded through. The feed screw 76 is connected to the top plate 3.
It is rotatably driven via a drive motor 78 and a belt 79 attached to a support plate 77 which is suspended and fixed on the lower surface of the device 7.

Therefore, as the drive motor 78 is rotationally driven, the feed screw 76 rotates, thereby moving the movable body 72 and moving the movable stopper 70 and the fixed stopper 71 at the same time.

The position of the movable body 72, that is, the position of the movable stopper 70 and the fixed stopper 71, is
It is automatically adjusted according to the length of the

That is, in the workpiece positioning device shown in the second figure that positions the workpiece W supplied onto the table 1 of the processing device main body A, the amount of movement of the longitudinal positioning mechanism 3 from the initial position is determined by the pulses supplied to the drive motor 8. The stop device shown in FIG. 6 is automatically moved by an amount equal to this amount of movement of the positioning mechanism 3. This amount of movement of the stopper device H is detected by a slit disk 80 fixed to the feed screw 76 and a detector (not shown) cooperating therewith.

The end faces of the non-defective product W and the defective product W come into contact with the stoppers 70 and 71 of the stopper device H, whose positions are automatically set according to the length of the workpiece W in this way g
ng, the workpiece is prevented from overshooting due to inertia and the end faces are uniformly aligned. Note that when the work to be discharged is a defective product W, the cylinder 75 is
is driven, and the movable stopper 70 is retreated to a position g, where it does not interfere with the movement of the defective product W, as shown by the chain line.

The works guided by the work guide device G and transferred by the work transfer device F are released onto the work receiver E and stacked one after another as shown in FIG. That is, immediately before releasing the workpiece, first, the width adjusting plate 59.59a is moved through the cylinder 57.57a shown in FIG. The cylinder 5 shown in FIG.
6.56a, the guide body 52.52a is shown in FIG.
) is forced to retreat as shown. At this time, the width plate 5
Since 9.59a protrudes from the guide bodies 52, 52a, the workpiece W falls onto the workpiece receiver E by its own weight while being guided by the workpiece dropping guide rollers 0, 60a. The work receiver E is intermittently lowered by one step each time one work W is discharged.

Therefore, as shown in FIG. 1 or FIG. 6, the workpieces W discharged onto the workpiece receiver E are piled up in a state in which the defective workpiece W protrudes by a certain amount by 1g more than the good workpiece Wg on substantially the same plane space. It's getting worse.

[Effects of the Invention] According to the present invention described in detail above, the transfer strokes of the non-defective products and the non-defective products are made different so that the non-defective products and the defective products are stacked in a state where the defective products protrude by a certain amount from the non-defective products. Therefore, the work can be discharged in a small space while distinguishing between good and defective products, and the entire apparatus can be configured very compactly, so that the installation space can be small. Further, since a stopper device having a movable stopper and a fixed stopper is provided to align the end faces of the discharged workpieces, the end faces of the workpieces are not disturbed by inertia or vibration when the workpieces are discharged. Furthermore, since the stopper device can be installed on the movable body and its position can be changed according to the length of the workpiece, it is possible to freely handle the workpieces of various types, especially of different lengths.

[Brief explanation of drawings]

Drawings: The drawings relate to an embodiment of the present invention.
The figure is a reduced front view showing the entire processing device to which the present invention is applied, FIG. 2 is a plan view showing the workpiece positioning device in the main body of the processing device, FIG. Figure 4 is an enlarged cross-sectional view taken along the line TV-IV in Figure 2, Figure 5 is a plan view of the workpiece discharging device with the top plate removed, and Figure 6 is an enlarged sectional view of Figure 5.
Fig. 7 is an enlarged partial sectional view of the work guide device, Fig. 8 is a sectional view taken along the line Fig. 7, and Fig. 9 is a work release operation of the work guide device. FIG. A...Processing device main body D...Work discharge device E...Work receiver F...Work transfer device G...Work guide device H ...Stopper device W...Workpiece W ...Good product W ...Defective product 1g 46...Transfer claw 52... Guide body 52a... Guide body 56... Release drive means (cylinder) 56a...
Release drive means (cylinder) 70...Movable stopper 71...Fixed stopper 72...Movable body 75...Moving stopper drive means (cylinder)
If', 91'n 1. Written correction of proceedings (voluntary) 1. Indication of the case 3. Person making the amendment Relationship with the case Patent Applicant: 2-6-21 Kyobashi, Chuo-ku, Tokyo (23g) Co., Ltd. Seikodai Representative Director Yu Yokoyama - 4 Agents 2-6-21 Kyobashi, Chuo-ku, Tokyo 104, Hattori Seiko Co., Ltd., Mogami Patent Office, Figure 9

Claims (4)

[Claims] (1) A method for discharging a flat workpiece processed by a processing device main body, in which the workpiece transfer amount is varied depending on whether the workpiece is a non-defective product or a defective product, and the non-defective product and the defective product are separated. A workpiece discharging method characterized in that the defective products are stacked so as to protrude by a certain amount from the non-defective products. (2) A device that transfers a flat workpiece processed by the processing device main body and drops it onto a workpiece receiver, and the amount of the workpiece transferred differs depending on whether the workpiece is a good product or a defective product. a workpiece transfer device, a guide body for guiding the workpiece transferred by the workpiece transfer device, and a release drive means for retracting the guide body to release the workpiece on the workpiece receiver; A work discharge device characterized by comprising: (3) A device that transfers a flat workpiece processed by the processing device main body and drops it onto a workpiece receiver, and the amount of the workpiece transferred differs depending on whether the workpiece is a good product or a defective product. a workpiece transfer device having a guide body for guiding the workpiece transferred by the workpiece transfer device and a release drive means for retracting the guide body to release the workpiece on the workpiece receiver; a movable stopper displaceably supported to align the end faces of the non-defective products; a driving means for displacing the movable stopper to a position that does not interfere with the transfer of the defective products when discharging the defective products; A workpiece discharging device comprising: a stopper device having a fixed stopper disposed at a constant interval in the workpiece transfer direction for aligning the end face positions of the defective products. (4) A device that transfers a flat workpiece processed by the processing device main body and drops it onto a workpiece receiver, and the amount of the workpiece transferred differs depending on whether the workpiece is a good product or a defective product. a workpiece transfer device having a guide body for guiding the workpiece transferred by the workpiece transfer device and a release drive means for retracting the guide body to release the workpiece on the workpiece receiver; a movable stopper displaceably supported to align the end faces of the non-defective products; a driving means for displacing the movable stopper to a position that does not interfere with the transfer of the defective products when discharging the defective products; and a stopper device having fixed stoppers disposed at regular intervals in the workpiece transfer direction to align the end face positions of the defective products; and a stopper device supported movably in the workpiece transfer direction and equipped with the stopper device. A workpiece discharging device comprising: a moving body;