JPH0475762A - Casting product having information mark - Google Patents

Abstract

PURPOSE:To accurately read information projections by forming information mark provided with the inherent processing information on the surface of casting products with the information projections on plural lines and making both side faces of the injections the inclining face capable of forming optical reflecting face or shadow face. CONSTITUTION:In the production line B executing finishing process of the as-cast product A, the as-cast product A with the bottom part upside is laid on a carrying conveyor 10. The as-cast product A is shifted to an inherent information reading device 11, handgrip hole machining device P and heaton hole machining device Q arranged at the intervals on the carrying conveyor in order. The projections (a) for forming each information projection, etc., has almost trapezoidal cross sectional shape having inclination faces 34 at both sides in order to enhance the contract of the picture received by a camera device 11b. By this method, the picture of information projection is made clear and the information projections can be accurately read.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a cast product having an information mark on its surface.

(b) Conventional technology For example, Fig. 14 shows the manufacturing process of a cast iron bathtub, which is one of the cast iron products.
0), finishing process (101), and enamel firing process (
102) and an assembly process (103).

Then, in the casting process, first, an upper mold is attached to an upper mold having the same shape as the casting material, then sand is filled in (j7), and the upper mold is created by extracting air from the air outlet of the upper mold (17). By separating the upper mold from the mold, two molds can be produced. The lower mold can be made in a similar manner. Next, the upper and lower molds are assembled to form a casting space between the molding surfaces of the two, and the molten metal is poured into the casting space, and after slow cooling, a cast material is formed.

As shown in Fig. 15, the finishing step (101) includes a step (110) of removing sand and foreign matter from the surface of the casting material using Schottplast, and a step (110) of removing sand and foreign matter from the surface of the casting material by using Schottplast, and making holes such as handgrip mounting holes and heat-on holes. Processing process (Il1) and deburring process by polishing*l the outer surface of the casting material (Il1)
12) and the step of polishing the inner surface of the casting material (113)
It consists of

Furthermore, the process of machining the above-mentioned hand grip mounting holes, etc.
1. Measure the total length, width, and height of the cast material using a shape measuring device equipped with a detector such as a limit switch at the tip (115), and based on the measured values. After that, a casting material corresponding to the same measurement value is identified, and then a hand grip hole (=J hole or hiton hole) is drilled at the desired position using an NC-controlled processing machine (11G).

(c) Problems to be solved by the invention However, as the tastes of speakers have diversified in recent years, there has been a demand for diversification of products.
Even if the casting material is of the same height, the positions of the handgrip mounting holes, heat-on access holes, etc. may be different, or hole machining may not be necessary.

However, with the above-mentioned shape measuring device, as long as the casting bodies have the same shape, it is not possible to identify the casting bodies that have been subdivided into seven parts.・It was impossible to drill holes in cast metal products.

Therefore, even if they have the same shape, it is difficult to manufacture various casting products with handgrip mounting holes and hiton holes in the same position on an automatic production line, which reduces production efficiency. was.

Therefore, an information mark with unique processing information is created on the surface of the cast product.The mark is formed from multiple rows of linear information protrusions with different lengths and positions. A possible idea would be to run the casting product on a conveyor and use a unique information reading device consisting of a lamp device, a camera device, etc. to read the information mark on the surface of the casting material product and identify the type of the casting material product. .

On the other hand, if the information protrusion is simply formed to have a generally rectangular cross section or a mountain cross section, the following problems will occur.

When manufacturing a mold, because there is no draft angle of the information protrusion, the part forming between the upper surface of the information protrusion of the mold and the casting surface tends to collapse, and therefore the upper surface of the information protrusion of the casting base product and the surface of the casting base product easily collapses. The shape of the border is not constant, making it difficult for the unique information reading device to read the information, and increasing the possibility of reading errors.

An object of the present invention is to provide a casting product having a novel information mark that can solve the above-mentioned problem R.

(d) Means for Solving the Problems In the present invention, an information mark having unique processing information is extracted on the surface of a cast product, and the mark is formed by a plurality of lines of lines whose lengths and positions are defined. Formed from shaped information projections, 1. Another object of the present invention is to provide a cast product having an information mark characterized in that both sides of the information protrusion are formed into a light reflecting surface or one surface is an inclined surface that can be formed.

(E) Functions and Effects With the above-described configuration, the present invention has the following functions and effects.

(2) The casting products according to the present invention are integrally provided with information marks corresponding to information specific to each casting product on their surfaces. Therefore, for example, at the stage of producing a casting material, the casting material 1
1! ! The product is placed on the conveyor (1-7), and the information on the information mark is read by the mark reading device, and the read information is input to the control device using the signal and 12, and the information is read from the control device. Depending on the drive signal, subsequent pressurization work etc. can be performed.Therefore, for example,
Even if the external shape is the same, many casting products with different unique information can be reliably and accurately identified using information marks, and then an automatic processing machine controlled by a control device can be used to uniquely identify them. Necessary processing corresponding to the information, for example, hand grip drilling (= drilling of 1 hole or Heaton hole) on cast material can be performed automatically.

■In addition, at the stage of casting products, based on the same information mark,
Inventory management etc. can be performed smoothly.

■Furthermore, each information protrusion is divided into multiple linear protrusions with a certain length (1-), and by varying the position and number of the same segment in each row, each information protrusion is divided into a plurality of linear protrusions containing different information contents. It can be a kind of information protrusion. Furthermore, by arbitrarily selecting the protrusion forms of these various types of information protrusions for each column and combining them with similar information protrusions in other columns, the above-mentioned 1-5 A wide variety of post-processing including weighted processing
can be processed.

In particular, by forming an inclined surface between the protrusion L and the surfaces of the cast material, the inclined surface acts as a draft slope, making it easier to mold the mold, and accurately shaping the information protrusion. In addition, the boundary between the soil surface with information protrusions and the surface of the cast material can be made thick or uniform in shape, so the image on the unique information reader becomes clearer and the information Mistakes in mark reading can be prevented.

Furthermore, by shining light on the information protrusion, a shadow is created, and unique information can also be read from this shadow.

In addition, sloped surfaces are formed on both sides of each information protrusion, so that the image of the information protrusion on the unique information reading device is clear even when the light for information reading is irradiated from either side of the protrusion. This allows the information protrusions to be read accurately.

(f) Examples The present invention will now be explained in detail based on examples shown in the accompanying drawings.

FIG. 1 shows a production line (B) for performing a finishing process on a casting material (A) before it is made into a product, among the production lines for producing a cast product according to the present invention.

As shown in the figure, a cast metal blank (A) with its bottom side facing upward is placed on the conveyor (10), and the cast metal blank (A) is placed on the conveyor (io) in the conveying direction. Unique information reading devices placed at intervals (11)
, Hand Grip Hole Processing Device (P) Heaton Hole Drilling J
7 sets! They will be sequentially transferred to (Q).

In addition, as shown in Figures 1 and 3, cast metal products (A
), an information mark (C) indicating j-specific information given to the cast metal product (A) is integrally extracted.

In this embodiment, the information mark (C) is six rows of linear information projections (a) (as shown in FIGS. 4 and 5).
Consists of h) (e) (d) (r).

For example, the information protrusions (a) in the first and sixth columns
) (f) shows a reference information mark for making the unique information reading device (11), which will be described later, recognize the start of reading.

Note that if the casting material (A) is placed in the wrong direction on the conveyor (lO), the unique information will be read incorrectly, but the first and last information protrusions (a) and (f) Since the lengths are different, an error in the mounting direction can be detected, reading of the unique information can be stopped, and the sheets can be flattened to be carried out from the production line (B) without any further processing.

The information protrusions (b) and (e) in the second and third columns indicate product numbers, and two columns are provided to accommodate product diversification.

The information protrusion (d) in the fourth row is for preliminary information on the product number, and normally there are three types: R type (mounted on the right side), L type (mounted on the left side), and RL type. However, it can also be used for information on special products in the fifth column.

Further, the information projection (e) in the fifth column indicates whether or not the casting material (A) is a standard product. In the case of this embodiment, since it is a standard product, the information protrusion (e) is not provided, but is provided in the case of a special product.

Furthermore, the information protrusions in each column listed above] <a) (b) (
e) (d), (e), and (f) can each take the form of a protrusion shown in FIG. 6.

In other words, each information protrusion has a different information content by dividing a linear protrusion with a constant length (L) into four parts (1) and varying the number and position of the divided pieces (1). can include.

Furthermore, by combining these protrusion forms ① to ② with arbitrary selections for each column, various kinds of unique information can be represented by the information mark (C).

Therefore, even if the casting material (A) before becoming a casting product has the same height, width, and length, and has the same shape, a large amount of processing information other than the information about the shape can be converted into arbitrary information. Protrusion (a) (b) (e) (d) (e)
By changing the protrusion form ■ to [stock] of (r), each information mark (C) 1. You can have two.

Next, the configuration of the unique information reading device (11) for reading the unique information included in the above information mark (C) will be explained.

As shown in FIGS. 2 and 7, in this embodiment, a lamp device [(lla) that irradiates a light beam from an oblique direction toward an information mark (C), and a light beam reflected from the mark (C) is used. Alternatively, the unique information contained in the shadow, that is, the information mark (C), is captured as an image consisting of bright and dark areas, and the image signal is sent to the control device! (S) (see FIG. 1) and a camera device w(llb).

With this configuration, the unique information of the 44-digit information mark (C) placed on the bottom plate (13) of each casting product (A) is sent to the control device (S) before it is made into a casting product. Let W (S) determine the unique information of the casting material (A),
The necessary machining control signals are sent to the NC-controlled 11-grip hole machining device 1 (P), Heaton hole machining device (P), and Heaton hole machining device (Q) to accurately place the hand at the required location on the casting material (A). Grip mounting holes and hidden holes can be provided.

Next, the casting material (
The drilling work for the handgrip mounting hole and heaton hole for A) will be explained.

In the finishing and straightening steps of the production line (B) for enamel casting bathtubs shown in FIG. 1, each casting material (A) is moved by a conveyor (to)i.

A mark reading device (
11), as shown in FIG. 2, the unique information of the information mark (C) on the bottom plate (13) of the casting body (A) is read at 12, and the read unique information is sent to the control device (12) as a signal. S) and handgrip hole processing device (P
) and the Heaton hole processing device W (Q)]7, it is possible to drill a handgrip attachment hole or a Heaton hole at a desired location on the surface of the casting material (A).

In this way, the present invention uses the information mark (C) to
Since the unique information about each cast material product (A) is read using the method, even if the external shape is completely the same, other unique information (for example, the position of the hand grip hole or bean hole, etc.) can be read. It is possible to reliably and accurately identify various types of raw casting products (A) with different types (distinguishing between standard products and special products) using the information mark (C), and then use the control device (S).
handgrip hole side controlled by ]-device I (
P) and the hole machining device f (Q), the necessary machining corresponding to the unique information can be automatically performed.

In addition, the information mark (C) is placed on the surface of the casting material (A).
- thickness (e.g. 2mm) and width (e.g. 4mm)
), the information mark (C) will not disappear due to exfoliation17 or become thinner due to abrasion before the machining process, and the mark (C) will be accurately cast.
By reading the specific information included in C)-9, the desired hole machining can be performed.

Roughly speaking, based on the unique information from the above-mentioned information mark (C), it is possible to easily calculate the production number of various casting products (A) or finished products that have undergone subsequent enamel processing. Inventory management of cast products can also be performed reliably and easily.

Next, in the vacuum forming method, a preferred method for integrally casting the above-mentioned information mark (C) on the bottom surface of the casting material (A) before it becomes a casting product will be described.

First, as shown in FIG. 8, different T-shaped information protrusion formation protrusions (a') are formed at different locations on the - side surface.
(b') (c') (d') (e') (r') (g') (
h') (j') (k') (+') (1") (no) Various types of oval protrusion forming pieces (20) to (32)
).

These information protrusion forming protrusions may include, for example, product numbers indicating drilling position information of the non-do grip attachment holes and the heaton holes.

In addition, each information projection forming projection (a') (b'Hc'Hd
') (e') (f') (g'>(h') (j
'>(k')(l')(m')(n') is
As shown in Fig. 9, both camera equipment @ (llb
) has a substantially trapezoidal cross-sectional shape with inclined surfaces (34) (34) on both sides, and each inclined surface (34) (34
) has a rounded shape in order to prevent problems during mold casting as much as possible.

Then, select any protrusion-forming piece 1 from among the protrusion-forming pieces (20) to 29), and as shown in FIG. The formed piece is fitted and fixed into an oval shaped piece fitting groove (42) provided on the side surface. On the other hand, select any protrusion-forming piece from the protrusion-forming pieces (30) to (32), and similarly select the oval-shaped forming piece insertion groove ( 41) Fit and fix inside.

As described above, in this embodiment, the cast metal matrix forming plate (40) has a plurality of protrusion forming pieces (20) to (32) having information protrusion forming protrusions containing unique information provided on the plate body. The projection piece is removably inserted into the insertion groove (41) (42) 1
2, the projection forming piece (20) = (3
2) is replaced with protrusion forming pieces (20) to (32) having information protrusion forming protrusions containing other unique information,
An information mark (C) containing completely different processing information, inventory management information, etc. can be formed on the surface of the casting material (A). Therefore, a large number of casting mark forming plates (40
), the number of parts can be reduced, and the casting work mark forming plate (40) can be easily applied to the casting work (A).

In addition, in this embodiment, each protrusion forming piece (20)-(3
2) is provided with fixing protrusions (43) and (44) on its back surface, and the fixing protrusions (43) and (44) are mounted at different positions. - The forming piece insertion grooves (41) (42) provided on the cast material mark forming plate (40) are as follows:
On its internal bottom surface, there are fixing protrusions (43) (
44) and the fixing protrusion insertion groove (45) (4).
6).

Therefore, by fitting the fixing protrusions (43) (44) into the fixing protrusion fitting grooves (45) (, 46), the protrusion forming pieces (20) to (29) and the protrusion forming pieces (30) to
(32) can be fitted and fixed into the forming piece fitting grooves (41) and (42') without making a mistake in the mounting position.

In addition, select any two protrusion forming pieces from the 13 protrusion forming pieces (20) to (32) and press 1- to insert the forming piece into the groove (41).
(42) allows the code forming plate (40) to include arbitrary product number information from among a wide variety of product numbers indicating the perforation position information of the handgrip attachment hole and the heat-on hole.

Furthermore, in this example, the casting material mark forming plate (
40) is a plurality of casting materials to be processed (A)
Protrusions for forming information protrusions (n“
)(o')(p')(Q') are integrally formed on the surface of the cast mark forming plate (40), and τ is formed.

Next, as shown in FIG. 1-1 and FIG.
Connecting pole h (5
0) to connect and fix.

Then, place the two frames (5) shown in Figure 12 on top of the upper mold (11).
2), then fill it with sand 12, remove air from the air outlet D (54) of the upper frame (52) to create an upper casting (5G), and replace the upper mold (56) with the upper mold ( 11
), the upper mold (56) can be molded.

The lower mold (55) can be molded by a similar method.

As shown in FIG. 13, mark forming grooves (57) are formed in the flat inner surface of the upper mold after the mold separation.

Next, as shown in FIG.
6) assemble to form a casting space between the two molding surfaces]2
, the molten metal is poured into the same casting space, and after slow cooling, the casting material (
A) is molded.

In this casting operation, the molten metal is poured into the mark forming groove (57
), so mark the information mark (C) on the bottom plate (13) of the cast product and 1-2 cast base products (A) as shown in Figures 4 and 5. It can be cast out.

As described above, by using the cast metal molding plate (40), it is possible to easily form the bottom plate (13) of each hook base product (A).
Information mark (C) containing unique information in Ll- can be formed integrally and clearly.

In particular, the information protrusion forming protrusion (a'
)(b') (e')(d') (e')(f')
(g') (h') (j °) (k') (bi) (light') (
n') protrusion upper surface (34a') and casting material surface (34
)) “) form an inclined surface (34) (34) between the
In addition, when forming the mold, the information protrusion formation protrusion (a")
(b') (c') (d') (e') (f') (g'>
(h') (j') (k') (do) (w+') (n
Since it is possible to take a large ejection opening of the mold, the part between the information protrusion forming protrusion upper surface (a4a') of the mold and the casting material surface (34h') is difficult to collapse, and therefore, the casting material (A ) can be cast into accurate shapes, and as shown in FIGS. 4 and 5, the upper surface of the information projections (34a) of the casting body (A) and the inclined surface (34) (34) between the casting body island surface (34b)
) or intervening information protrusions on the casting base product (34a)
The contour of the information mark (C) can be made into a constant shape, so that the image on the unique information reading device (11) becomes clear, and mistakes in reading the information mark (C) can be prevented.

Furthermore, when light is applied to the information protrusion (a>-(f) diagonally from above, the reflectance of one inclined surface (34) increases, but the reflectance of the other inclined surface (34) decreases. The unique information reading device (11) is identified as a shadow in this image, and the unique information can be read from this shadow.

In addition, the inclined surfaces (34) on both sides of each information protrusion (a) to (f)
If (34) is formed symmetrically with the information projections (a) to (f) as the center, the conveyor direction of the conveyor (lO) when reading the information mark (C) can be reversed to L5, or the casting Even if the mounting direction of the base product (A) is reversed, the information mark (C)
) can be read in one sentence.

[Brief explanation of the drawing]

FIG. 1 is a conceptual explanatory diagram showing the main parts of a casting product structure line for manufacturing casting products according to the present invention, FIG. 2 is an enlarged side view of the production line, and FIG. 3 is a plan view of the same. Fig. 4 is a plan view of the mark, Fig. 5 is a sectional view taken along the line I-■ in Fig. 4, Fig. 6 is an explanatory diagram of the arrangement of information protrusions forming the mark, and Fig. 7 is a usage state of the unique information reading device. Explanatory drawings, FIG. 8 is a plan view of a plurality of protrusion forming pieces having information protrusions, FIG. 9 is a sectional view taken along the FIG. 12 and 13 are illustrations of the vacuum forming method, and FIGS. 14 and 15 are flowcharts showing the steps of the vacuum forming method. In the figure, (A): Casting base product (B) (C) 6 (P): (Q) = (10): (11): (13): (34) + (40): Production line information mark hand Grip hole processing device Heaton hole processing device Conveyor unique information reading device Bottom plate Slanted surface Casting base product mark forming plate

Claims (1)

[Claims] 1) An information mark with unique processing information is cast on the surface of a cast product, and the mark is formed from multiple rows of linear information protrusions, and both sides of the information protrusions are covered with light reflecting surfaces or A cast metal product having an information mark characterized by having an inclined surface that can form a shadow surface.