JPH01118720A - Inspecting method for press product - Google Patents

Abstract

PURPOSE:To perform high-accuracy inspection by inspecting whether or not a product at the top stage of a group of press products which are stacked at an inspection position is normal. CONSTITUTION:Press products 2 which are discharged from a press machine are taken out, one by one, at a position (a), stacked on a holding frame 6 in order by a specific quantity, and sent as one group to a next inspection position (b) intermittently. Here, the product at the top stage of the group of the stacked press products is inspected as to its quality and when the product is normal (or defective), it is decided that all of the products in the group including the product 2 are normal (or defective). In this case, the product 2 at the top stage of the press product group is formed latest in the product group. In general, if a defective is formed, press working has such features that no conforming products are manufactured thereafter and defectives are formed successively. Therefore, when the product at the top stage is not a defective, it means that the 1st defective is included in the product group and there is no defective in the product group decided as a conforming product group.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an inspection method for continuously inspecting the quality of pressed products discharged from a press at high speed.

After being discharged from the press machine, the pressed products formed by the plate rice summer limb blood press machine are inspected for quality before being loaded onto the pallet for transportation.Based on the inspection results, non-defective products are transferred to the pallet for non-defective products. Good products are sorted and loaded onto pallets for defective products.

The above-mentioned inspection of the quality of pressed products is carried out by an operator directly visualizing or touching the pressed products flowing on the conveyance line.

(If the production speed is relatively slow, such as a tandem press, the speed of the pressed product flowing on the conveyance line is also slow.
Workers can continuously inspect incoming press products.

However, with very fast production speeds such as transfer presses, the flow of pressed products is also very fast, making it impossible to inspect them continuously. We are conducting an inspection.

When performing a sampling inspection as described above, even if the inspection result is defective, it is not possible to identify which pressed product is defective between the previous inspection and the current inspection, and there may be some non-defective products and some non-defective products in the pallet of non-defective products. Good products and good products were sometimes mixed together. For this reason, after the pressed products were assembled on the pallet, they had to be re-inspected and stacked again, resulting in very poor workability.

For this purpose, the press products discharged from the press are taken out one by one at the output position and placed in order, and when a predetermined number of sheets are stacked, they are collected as a set and sent to the next inspection position intermittently. The topmost pressed product in the group of pressed products stacked at the inspection position is inspected for quality. If the inspection result is a good product, the entire group of pressed products including that pressed product is considered good, and if it is defective, the product is judged to be good. This is an inspection method that determines the entire pressed product group as defective.

With the above-mentioned method, even if pressed products are discharged from the press machine at high speed, the pressed products are stacked at the take-out position until a predetermined number of sheets are accumulated, and multiple sheets are sent as a set to the inspection position. Since the tests are performed at slow intervals, sufficient testing time can be obtained.

In addition, the topmost pressed product in a group of pressed products stacked up is the one that has been formed the most in the pressed product group, and generally speaking, when a defective product occurs in press processing,
After that, good products will not be produced (there is a characteristic that they will be defective products continuously, so if the pressed product on the top row is a good product, all of the pressed products in that group are good products, and if they are defective) This means that the first defective product is included in the pressed product group, and the time of occurrence of the defective product can be identified, and defective products are not mixed in the press product group that is considered to be non-defective.

Back week Embodiments of the present invention will be described below with reference to the drawings.

In the drawings, (1) is a conveyance line that continuously conveys pressed products (2) discharged from a press (not shown) at high speed. (3) is an inspection line installed in front of the conveyance line (1) for inspecting and loading pressed products (2), and is a slide platform (4) that forms a rectangular closed loop.
A plurality of carts (5) (5), for example, four carts (5), (5), etc. are slidably mounted on the top, and the carts (5), (5), etc. are intermittently fed at high speed to move along the slide table (4). It is designed so that it circulates. Further, the carts (5), (5), etc. all move synchronously and stop at each corner of the slide table (4).

Holding frames (6) (6) for stacking and holding a predetermined number of press products (2), for example, three sheets, are attached to the carts (5) (5). In addition, the above-mentioned trolley (5
) (5) . . . is designed to prevent the holding frame (6) from changing at each corner of the slide table (4) during circulation.

In the inspection line (3), the corner (a) facing the conveyance line (1) is the take-out position, and the next corner (b)
) is the inspection position, the next corner (C) is the loading position, and the last corner (d) is empty. Then, the cart at the take-out position (a) (
5) goes to inspection position (C), loading position (C)
The cart (5) moves to the empty position (d), and then moves to the empty position (d).
The carts (5) in d) move to the take-out positions (a).

(7) and (8) are pallets on which pressed products (2) are loaded, one pallet (7) is loaded with good products, and the other pallet (8) is loaded with defective products.

Furthermore, the pallets (7) and (8) are provided with partitions (9) and (10) at equal intervals so that, for example, press products (2) can be stacked upright. (1)) is a loading loader for loading the pressed products (2) on the cart (5) onto the pallets (7) and (8), and the lower end of the loading rod (12) is configured to be able to move up and down as well as back and forth. , a plurality of vacuum cups (13) (13)... which adsorb and hold the pressed product (2).
A suction head (14) equipped with a suction head (14) is rotatably provided, and a suction head (10) is rotated by 90 degrees by a rotational drive means (15).

The conveyance line (1) continuously conveys the press product (2) discharged from the press machine at high speed. In addition, the inspection line (3) intermittently feeds the carts (5), (5), etc. at a high speed at every set time. The set time is the same as that of the trolley (51 holding frames (6
) is the time for stacking a predetermined number of pressed products (2), for example three.

Then, at the take-out position (a) of the inspection line (3), the pressed products (2) that are successively sent in the conveyance line (1) are transferred to the product conveyance finger (16) (16).
)... with an unloader (not shown), etc., and the holding frame (
6) Store them inside and stack them in order. Holding frame (6
), when three pressed products (2) (2)... are stacked, the carts (5) (5)... are moved and the stacked pressed products are sent to the inspection position (b). is,
Also, an empty cart (5) is sent from the empty position (d) to the take-out position (a).

At the inspection position (b), the operator inspects the quality of the press product (2) at the top of the group of press products that has been sent, either visually or by touch. If the inspection result is good, the entire pressed product group is determined to be good, and if it is defective, the entire pressed product group is determined to be defective, and the result is transferred to the next loading position (C).

At the loading position (c), when the inspected press products are delivered, the vacuum cup (13) (13
Loader (1) waiting with )... pointing downwards
) is lowered to bring the vacuum cups (13) (13)... into contact with the pressed product (2). and vacuum cup (13) (13)
After adsorbing the pressed product (2) with ..., the loading rod (
12) rises and takes out one press product (2) from the holding frame (6). When the bonding iron (12) reaches the rising end, the suction head (14) rotates 90 degrees and presses the product (
2), then moves forward, and if the inspection result is good, the press product (2) is transported to the top of the non-defective product pallet (7), and if it is defective, it is transported to the top of the defective product pallet (8), After conveyance, the loading iron (12) descends, loads the pressed product (2) onto the corresponding pallet (7) or (8), and releases the suction.

After this, the loading rod (12) rises, then retreats and returns to its original position, and repeats the above operation to release the pressed product (2).
are sequentially loaded onto pallets (7) or (8). This loading speed is made to match the stacking speed of the pressed products (2) in the take-out position run (a). As a result, all the press products (2) in the holding frame (6) are loaded within the set time, and the empty truck (5) is sent to the empty positive controller (d).

The above series of operations is repeated to inspect the quality of the press product (2) and to load it.

The number of pressed products (2) to be stacked on the holding frame (6) of the cart (5) may be determined according to the time required for inspection. Further, when loading the pressed products (2), all the stacked pressed products may be taken out at once and loaded onto a pallet.

In addition, when a defective product is detected, production of the press machine is stopped and the problem is corrected.

According to this invention, even if pressed products are discharged from a press machine at high speed, they are stacked and sent as a set to the inspection position, so the inspection position Since pressed products are sent intermittently, sufficient inspection can be carried out.

In addition, when a defective product is produced in press processing, no good product is produced after that, and defective products are produced continuously. The product is inspected, and the press product in question is the last one to be molded in the group of press products, so if the inspection result is a good product, all of the press products in the group are good, and the test result is defective. If so, the first defective product will be included in the pressed product group. Therefore, it is possible to prevent defective products from being mixed into a group of pressed products that are considered to be non-defective products, and highly accurate inspection can be performed.

Moreover, this inspection method can sufficiently handle even when pressed products are discharged at high speed, so by applying it to a transfer press, its inspection ability can be enhanced and the production rate can be significantly improved.

[Brief explanation of the drawing]

The drawing is a perspective view of essential parts showing an example of an apparatus for carrying out the method of the present invention. , (1) - Conveyance line, (2) - Pressed product, (3
)--Inspection line, (4)--Slide stand, (5)
・-Dolly, (6)--Holding frame, (7) (
8)--Pallet, (a)--Take-out position, <b>--Inspection position, (c)--Loading position, (d)--Empty position. Procedural amendment written format) February 25, 1988 Director General of the Patent Office Kunio Ogawa 1. Indication of the case 1988 Patent Application No. 276435 2. Name of the invention Inspection method for pressed products 3. Person making the amendment Relationship to the case Patent applicant name (296) Daihatsu Motor Co., Ltd. 4, agent Yu 550 Address 8th floor, Osaka Shoko Building, 1-15-26 Edobori, Nishi-ku, Osaka, Osaka Prefecture Full name: 1 Masa
(6458) Patent attorney Mr. Ebara, 2,255, date of amendment order and -
December 24, 1988 (all sending date: January 26, 1988) 6. Subject of amendment Description and drawings 7. Contents of amendment J par. 2
- In the specification, page 4, line 20, "in the drawings" is amended to "in FIG. 1". ②, 1st) Page 10, line 10, ``The drawing is'' is corrected to ``Figure 1 is''. ■Amend Figure 1 of the three drawings as shown in the attached sheet.

Claims (1)

[Claims] (1) The pressed products discharged from the press machine are taken out one by one at the take-out position and stacked in order, and when a predetermined number of products are stacked, they are intermittently sent as a set to the next inspection position and stacked at the inspection position. A quality inspection is performed on the press product at the top of the press product group, and if the inspection result is a good product, the entire press product group including that press product is determined to be good, and if it is defective, the entire press product group is determined to be defective. A method for inspecting pressed products, characterized in that: