JP2020040098A - Aluminum wheel production line, and individual management method for aluminum wheel production line - Google Patents

Abstract

To provide an aluminum wheel production line capable of individual management using recognition patterns regarding the whole process of an aluminum wheels, and an individual management method for an aluminum production line.SOLUTION: An aluminum wheel production line comprises: a first recognition pattern formation apparatus 16 of individually forming first recognition patterns on the surfaces of individual aluminum wheels exhausted by a casting apparatus 11; first recognition pattern information reading apparatuses 27, 36 of individually reading the pattern information of the first recognition patterns from the surfaces of the individual aluminum wheels exhausted by a heat treatment apparatus 31; a second recognition pattern decision apparatus 37 of individually deciding the second recognition patterns associated with the first recognition patterns based on the pattern information regarding the individual aluminum wheels; and a second recognition pattern formation apparatus 38 of individually forming the second recognition patterns on the surfaces of the individual aluminum wheels after the pattern information reading.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an aluminum wheel production line for producing an aluminum wheel by casting, and an individual management method for the aluminum wheel production line.

  2. Description of the Related Art As a method of managing a casting individually in a production line of a casting, a method of forming a unique recognition pattern on the surface of a casting and managing the casting is known.

  As a method of forming a recognition pattern, a chemical conversion treatment (for example, Patent Document 1), laser engraving (for example, Patent Document 2), casting (for example, Patent Document 3), and engraving (for example, Patent Document 4) are known. I have.

JP 2001-205423 A JP-A-10-202355 JP-A-6-39489 WO 2017/002604

  Also in the aluminum wheel production line, a recognition pattern that can be identified individually is formed on the surface of the cast aluminum wheel, and based on the recognition pattern, individual management of the aluminum wheel, for example, manufacturing conditions and flow information of the individual wheel are managed. It is desired.

  However, in the aluminum wheel production line, there is a heat treatment step of solution-treating the aluminum wheel, and the recognition pattern may be oxidized. Therefore, the recognition pattern formed by the “chemical conversion treatment” of Patent Document 1 or the “laser” of Patent Document 2 has a pattern with shallow asperities, and may be difficult to visually recognize after heat treatment.

  In addition, in an aluminum wheel production line, since an aluminum wheel is formed by die casting, if it is attempted to form a recognition pattern by “casting” of Patent Document 2, it is necessary to change a part of the die every time. Difficult in efficiency.

  Further, the aluminum wheel is not affected by the processing, and the position where the recognition pattern can be formed is limited to a part of the mounting surface. Therefore, when the recognition pattern is formed by “engraving” in Patent Document 4, the recognition pattern is formed on a narrow surface, and it is difficult to perform the recognition pattern immediately after casting in terms of work efficiency. Further, similarly to Patent Document 2, since the pattern has a shallow unevenness, it may be difficult to visually recognize the pattern after the heat treatment.

  Accordingly, the present invention provides an aluminum wheel production line capable of individual management using a recognition pattern for all steps of an aluminum wheel, and an individual management method for the aluminum wheel production line.

  The present invention relates to an aluminum wheel manufacturing line for manufacturing an aluminum wheel by casting, comprising: a first recognition pattern forming apparatus for individually forming a first recognition pattern on each aluminum wheel surface discharged by a casting apparatus; A first recognition pattern reading device that individually reads the pattern information of the first recognition pattern from the surface of each aluminum wheel discharged by the device, and a first recognition pattern reading device that is associated with the first recognition pattern based on the pattern information. A second recognition pattern determining device for individually determining the second recognition pattern for each aluminum wheel; and a second recognition for individually forming the second recognition pattern on the surface of each aluminum wheel after reading the pattern information. And a pattern forming device.

  In the present invention, it is preferable that the first recognition pattern forming device is a device that forms the first recognition pattern by machining.

  In the present invention, it is preferable that the machining is stamping.

  In the present invention, it is preferable that the second recognition pattern forming device is a device that forms the second recognition pattern by laser processing.

  In the present invention, it is preferable that the first recognition pattern forming device is disposed at a position where the first recognition pattern can be formed on a rim surface of an aluminum wheel.

  In the present invention, it is preferable that the second recognition pattern forming device is disposed at a position where the second recognition pattern can be formed on a mounting surface of an aluminum wheel.

  Further, in the present invention, it is preferable that the second recognition pattern forming device is disposed at a position where the second recognition pattern can be formed on a bottom surface of a cast hole on a mounting surface of an aluminum wheel.

  The present invention is also an individual management method for an aluminum wheel manufacturing line, wherein a first recognition pattern is individually formed on each aluminum wheel after casting, and the first recognition pattern is formed from each aluminum wheel after heat treatment. The pattern information of the pattern is individually read, the second recognition pattern associated with the first recognition pattern is individually determined for each aluminum wheel based on the pattern information, and the individual recognition after reading the pattern information is performed. The second recognition pattern is individually formed on an aluminum wheel, and the aluminum wheel is individually managed by the first recognition pattern from the casting to the heat treatment and the second recognition pattern after the heat treatment.

  According to the present invention, it is possible to provide an aluminum wheel manufacturing line and an individual management method for an aluminum wheel manufacturing line that can perform individual management using a recognition pattern for all steps of an aluminum wheel.

Conceptual diagram of aluminum wheel production line (A) Side view of aluminum wheel material viewed from design side, (b) Cross-sectional view The figure which showed the preferable example of a 1st recognition pattern. Conceptual diagram of first recognition pattern forming device Conceptual diagram of the first recognition pattern reading device Conceptual diagram of the second recognition pattern forming device Conceptual diagram (enlarged view) of the first recognition pattern reading device The figure which showed the preferable example of a 2nd recognition pattern. Conceptual diagram of the second recognition pattern reading device

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Aluminum wheel production line)
As shown in FIG. 1, the aluminum wheel manufacturing line 100 of the present embodiment includes a small line including a casting line 10, a rough processing line 20, a heat treatment line 30, a finishing line 40, a painting line 50, and a final inspection line 60. The aluminum wheel is processed and formed by moving each small line in the above order while being conveyed to the roller conveyor R connecting these small lines.

  Further, the aluminum wheel manufacturing line 100 includes a host computer 70 connected to devices constituting each small line, so that data can be received from the devices constituting each small line.

(Casting line 10)
First, the casting line 10 includes a casting device 11 and a first recognition pattern forming device 16. The casting device 11 is a device that casts an aluminum wheel material 1 by pouring a molten aluminum into a casting mold and pressing and solidifying the aluminum wheel. In the casting apparatus 11, for example, the aluminum wheel material 1 as shown in FIG. 2 is formed by casting. The aluminum wheel material 1 is a semi-finished product having a disk part 2, a rim part 3, and a flange part 4, and includes a disk part 2, a hub part 2a, and a design part 2b formed radially from the outer peripheral surface of the hub part 2a. Have. Then, when the final product is obtained, the P surface in the figure is a surface facing outward with respect to the vehicle body.

  In the casting apparatus 11, an aluminum wheel blank 1 having a recess 2c on the mounting surface (Q surface) of the hub 2a is formed. Although the concave portion 2c may be formed by processing, it is more preferable to form the concave portion 2c using a mold in which the concave portion 2c is formed, from the viewpoint of work efficiency. As will be described below, the concave portion 2c becomes a laser mark position and also has a shape that reduces the weight of the aluminum wheel material 1.

  The first recognition pattern forming device 16 is a device for individually forming the first recognition pattern P1 on the surface of each aluminum wheel material 1, and is disposed at a position on the discharge side with respect to the casting device 11.

  The casting device 11 and the first recognition pattern forming device 16 are connected to a host computer 70, and can be used for manufacturing information (for example, casting date and time, hot water temperature, mold temperature, cumulative number of castings) of the casting device 11, The pattern formation information (for example, the individual management number, the casting machine recognition number, the embossing date and time) of the first recognition pattern forming device 16 can be transmitted to the host computer.

  Further, the first recognition pattern P1 can be a number or a character that can be visually confirmed, but a two-dimensional matrix code or a bar code as shown in FIG. 3 is more preferable. By using such a first recognition pattern P1, a recognition pattern that has a large amount of information in a small area and can be easily read by a commercially available reading device can be obtained.

  Here, as the first recognition pattern forming device 16, it is preferable to use a device that forms the recognition pattern P1 by machining, and the first recognition pattern P1 is a surface of an aluminum wheel as shown in FIG. Therefore, it is preferable to form a recognition pattern that can be deeply engraved. By doing so, it is possible to reduce a decrease in visibility even after a heat treatment step in which the temperature of the material surface exceeds 500 ° C.

  In particular, the first recognition pattern P1 is preferably formed by stamping as shown in FIG. Thereby, the first recognition pattern P1 is deeply dug by the stamping tool, is resistant to deformation and discoloration of the material surface due to the heat treatment, and does not generate cutting chips as compared with the cutting processing, so that the processing can be performed in a short time, It can be engraved efficiently.

  The first recognition pattern P1 is preferably formed at the position of the rim 3 or the flange 4 on the surface of the aluminum wheel material 1. By forming in such a position, the processing position becomes the side surface, and the processing can be easily performed. Further, as shown in FIG. 5, it can be easily read from the side on the conveyor.

(Rough processing line 20)
Next, the rough processing line 20 includes a rough processing device 21 and an inspection device 26. The roughing device 21 is a device for processing so as to remove large burrs or the like that obstruct the handling of the surface of the aluminum wheel material 1 by a machine or the like, and is, for example, a device such as a large blade polishing machine.
The inspection device 26 is a device that inspects foreign materials on the surface of the aluminum wheel material 1 and is, for example, a device such as a visual inspection device.

  Note that the rough processing device 21 and the inspection device 26 are connected to the host computer 70, and the manufacturing information (for example, processing time, processing load, and current value) of the rough processing device 21 and the inspection information (for example, , Casting surface, foreign matter, etc.) can be transmitted to the host computer 70.

(Heat treatment line 30)
Next, the heat treatment line 30 includes a heat treatment device 31, a first recognition pattern reading device 36, a second recognition pattern determining device 37, and a second pattern forming device 38.

  The heat treatment device 31 is a device that performs solution heat treatment on the aluminum wheel material 1, and is, for example, a heat treatment device such as a large furnace that can heat-treat a large number of aluminum wheel materials 1 so as to form a solution at once.

  The first recognition pattern reading device 36 is a device for individually reading the first recognition pattern P1 formed on the surface of each aluminum wheel material 1, and is located at a position on the discharge side with respect to the heat treatment device 31. Are arranged.

  As shown in FIG. 6, the second recognition pattern determination device 37 is connected to the first recognition pattern reading device 36, and based on individual pattern information read by the first recognition pattern reading device 36, This is an apparatus that can individually determine the second recognition pattern P2.

  Also, the second pattern forming device 38 is connected to the second recognition pattern determining device 37, and the second recognition pattern P2 determined by the second recognition pattern determining device 37 is individually applied to the surface of the aluminum wheel material 1. It can be formed into a device.

  The heat treatment device 31, the first recognition pattern reading device 36, and the second pattern forming device 38 are connected to a host computer 70, and manufacture information (for example, heat treatment time, heat treatment temperature, conveyor speed) of the heat treatment device 31. ), Read information of the first recognition pattern reading device 36 (for example, read code quality information), and formation information of the second pattern forming device 38 (pattern formation time, read code quality information). The data can be transmitted to the host computer 70.

  Here, as the first recognition pattern reading device 36, a normal optical code reader can be used. By using such a first recognition pattern reading device 36, as shown in FIG. 7, reading can be performed in a non-contact manner, and a code of the aluminum wheel material 1 flowing on the conveyor can be read.

  Further, as the second recognition pattern determination device 37, a PLC (Programmable Logic Controller) can be used. By using such a second recognition pattern determination device 37, the number of external hardware is reduced, the processing is simplified, and control can be easily performed.

  In addition, a PC can be used as the second recognition pattern determination device 37. According to the second recognition pattern determination device 37, the degree of freedom is greatly increased and complicated processing, for example, positioning by image processing and appearance inspection can be performed at the same time.

  As the second recognition pattern forming device 38, it is preferable to use a device that forms the recognition pattern P2 by laser processing. As the second recognition pattern P2, a dot pattern as shown in FIG. 8 is formed. More preferred. By doing so, the size of the stamp can be reduced and the cast hole (recess 2c) on the aluminum wheel mounting surface in a narrow range can be stamped.

  In particular, it is preferable to form the second recognition pattern P2 into a shape in which dots are raised thereon by performing a base treatment. By adopting such a shape, the marking becomes clear, and as shown in FIG. 9, it can be easily read even when moving on a conveyor.

  The first recognition pattern P1 is preferably formed at the position of the flange portion 4 on the surface of the aluminum wheel material 1. By forming in such a position, the position becomes a processing portion, and it can be removed cleanly in processing.

(Finishing line 40)
Next, the finishing line 40 includes a finishing unit 41 and an inspection unit 46. The finishing device 41 is a device that removes fine burrs and the like, and specifically, is a device that processes the surface of the aluminum wheel material 1 into a shape of a final product.
In addition, the inspection device 26 is a device that performs an appearance inspection, and specifically, is a device that inspects the surface of the alloy wheel material 1 that has appeared during processing for any foreign matter, bubbles, or the like.

  Note that the finishing device 41 and the inspection device 46 are connected to the host computer 70, and the manufacturing information of the finishing device 41 (for example, the current value during processing, the processing time) and the inspection information of the inspection device 46 (for example, Information on defective products such as casting surface, residual flash, etc.) can be transmitted to the host computer 70.

(Painting line 50)
Next, the coating line 50 includes a coating device 51 and an inspection device 56. The coating device 51 is a device that forms a protective film on the surface of the aluminum wheel, and specifically, is a device that forms a coating film on the surface of the aluminum wheel material 1 by uniformly spraying the paint. The inspection device 56 is a device that performs a surface inspection, and specifically, is a device that inspects the surface of the aluminum wheel material 1 for foreign substances, bubbles, and the like.

  The coating device 51 and the inspection device 56 are connected to the host computer 70, and the application information (for example, the set film thickness and the outside air temperature) of the coating device 41 and the inspection information (for example, scratches, coating unevenness) of the inspection device 56. , Etc.) can be transmitted to the host computer 70.

(Final inspection line 60)
Next, the final inspection line 60 includes a final inspection device 66. The final inspection device 66 is a device for measuring the performance of the final product, and specifically, is a device for measuring the position of the center of gravity and inspecting the balance of the aluminum wheel final product.

  The final inspection device 66 is connected to the host computer 70 so that the inspection information (for example, the inspection time, the individual information of the inspection device, and the information on the defective product) of the inspection device 66 can be transmitted to the host computer 70.

  Finally, a plurality of second recognition pattern detection devices are disposed below the roller conveyor R after the finishing processing line 40, as shown in FIG. The second recognition pattern P2 can be detected. This makes it possible to know where the aluminum wheel material 1 has passed, and it is possible to automatically acquire traceability.

  Further, the host computer 70 acquires information data from the devices of each small line, and can organize and store the information as in a database, for example.

(Individual management method of aluminum wheel production line)
Next, an individual wheel management method of the aluminum wheel will be described while explaining the flow of the aluminum wheel in the aluminum wheel manufacturing line of the present embodiment.

  First, in the casting line 10, the aluminum wheel blank 1 is cast by the casting device 11, and the first recognition pattern P1 is formed by the first recognition pattern forming device 16 arranged on the discharge side. At this time, the casting device 11 and the first recognition pattern forming device 16 transmit the above data to the host computer 70, respectively.

Next, in the rough processing line 20, rough processing is performed by the rough processing apparatus 21 to remove large burrs and the like. At this time, the inspection device 26 inspects foreign substances and the like appearing on the surface.
When a defect is found in the inspection device 26, the first recognition pattern P 1 is read by the first recognition pattern reading device 27, and the data is transmitted to the host computer 70 together with information on the defective product.

  Next, in the heat treatment line 30, the heat treatment device 31 performs heat treatment on the aluminum wheel material 1 to change the material into a material having high rigidity. A first recognition pattern recognition device 36 is disposed on the discharge side of the heat treatment device 31, and reads the first recognition pattern P1 there. Based on the read data, the second recognition pattern determination device 37 specifies the product type of the aluminum wheel material 1 and issues a command for positioning the aluminum wheel material 1 and laser processing. The second recognition pattern forming device 38 forms the second recognition pattern P2 at the position of the concave portion 2c which is the non-processed portion, that is, performs the replacement. At this time, the heat treatment apparatus 31 and the second recognition pattern forming apparatus 38 transmit the data described above to the host computer 70, respectively.

  Next, in the finishing processing line 40, the shape of the final product is processed by the finishing processing device 41, and the first recognition pattern P1 formed on the rim portion 3 or the flange portion 4 is removed. At this time, the second recognition pattern reading device 47 is disposed below the conveyor, and it is possible to determine which processing device has performed the processing. The finishing device 41 and the second recognition pattern reading device 47 transmit data to the host computer 70, respectively. The host computer 70 associates the individual information with the manufacturing information.

The link between the processing information of the finishing processing device 41 and the individual aluminum wheels can be performed, for example, as follows.
First, the host computer 70 receives the processing information of the finishing processing device 41 as time-dependent change information F (t) at time t, and reads the individual information read by the second recognition pattern reading device 47 at a specific time t ₁ As information. Then, previously aluminum wheel material 1, the time [delta] _t required to move from the machining apparatus 41 to the second recognition pattern reading apparatus 47, is determined in advance from the conveying speed of the conveyor for conveying the aluminum wheel material, the host computer within 70 to associated manufacturing information of F _{(t 1} -δ t) in the individual information.
By performing the same processing in each line, the manufacturing history of the aluminum wheel material 1 can be easily checked later.

  Next, a surface inspection after the processing is performed by the inspection device 46. When a defect is found in the inspection device 46, the second recognition pattern P2 is read by the second recognition pattern reading device 47, and the data is transmitted to the host computer 70 together with the content of the defective product.

  Next, in the coating line 50, the coating device 51 applies a uniform coating on the surface of the aluminum wheel material 1 to form a protective film and a design. After that, a surface inspection is performed by the inspection device 51. When a defect is found in the inspection device 51, the second recognition pattern P2 is read by the second recognition pattern reading device 57, and data is transmitted to the host computer 70 together with information on the defective product.

  Next, the final inspection is performed by the final inspection line 60. When a defect is found in the final inspection line 60, the second recognition pattern P2 is read by the second recognition pattern reading device 67, and the data is transmitted to the host computer together with information on the defective product.

  As described above in the present embodiment, the present invention is characterized in that the first recognition pattern P1 and the second recognition pattern P2 are exchanged. The pattern P1, from the heat treatment to the last line, is managed by the second recognition pattern P2, so that it is possible to perform consistent individual management over the entire process from the casting to the last line, and it has a heat treatment line. In such an aluminum wheel production line, individual management of aluminum wheels can be made possible.

  As described above, the aluminum wheel production line and the individual management method of the aluminum wheel production line of the present invention have been described using the above embodiment, but the present invention is not limited to this embodiment. The configuration can be changed within the technical scope of the claims.

For example, in the aluminum wheel manufacturing line according to the present invention, the inspection device and the code reader are separately arranged. However, the present invention is not limited to this, and the same effect can be obtained by an integrated device.
The same effect can be obtained not only in the inspection apparatus but also in a visual inspection by a person. In that case, not only a fixed code reader but also a manual code reader can be used.

Further, although the code reader is arranged behind each line, the position of the code reader is not limited to this. For example, the same effect can be obtained by arranging it forward instead of backward.

1: Aluminum wheel material 2: Disk part 2a: Hub part 2b: Design part 2c: Recess (cast-out part)
2d: Planned position of through hole formation 3: Rim section 4: Flange section 5: First recognition pattern (stamping)
5a: dot location 5b: non-dot location 6: second recognition pattern (laser mark)
6a: Cast surface 6b: Base treatment surface (non-dot portion)
6c: dot location (convex shape)
10: Casting line 11: Casting device 16: First recognition pattern forming device 20: Roughing line 21: Roughing device 26: Inspection device 27: First recognition pattern reading device 30: Heat treatment line 31: Heat treatment device 36 : First recognition pattern reading device 37: Second recognition pattern determining device 38: Second recognition pattern forming device 39: Second recognition pattern reading device 40: Finishing processing line 41: Finishing processing device 46: Inspection device 47 : Second recognition pattern reading device 50: Painting line 51: Painting device 56: Inspection device 57: Second recognition pattern reading device 60: Final inspection line 66: Final inspection device 67: Second recognition pattern reading device 70: Host computer 100: Aluminum wheel production line

Claims (8)

An aluminum wheel manufacturing line that manufactures aluminum wheels by casting,
A first recognition pattern forming device for individually forming a first recognition pattern on the surface of each aluminum wheel discharged by the casting device;
A first recognition pattern information reading device for individually reading the pattern information of the first recognition pattern from the surface of each aluminum wheel discharged by the heat treatment device;
A second recognition pattern determination device that individually determines a second recognition pattern associated with the first recognition pattern for each aluminum wheel based on the pattern information;
A second recognition pattern forming device that individually forms the second recognition pattern on the surface of each aluminum wheel after reading the pattern information;
An aluminum wheel production line characterized by having:   The aluminum wheel production line according to claim 1, wherein the first recognition pattern forming device is a device that forms the first recognition pattern by machining.   3. The aluminum wheel manufacturing line according to claim 2, wherein the machining is stamping.   4. The aluminum wheel manufacturing line according to claim 1, wherein the second recognition pattern forming device is a device that forms the second recognition pattern by laser processing.   5. The aluminum according to claim 1, wherein the first recognition pattern forming device is arranged at a position where the first recognition pattern can be formed on a rim surface of an aluminum wheel. 6. Wheel production line.   The aluminum according to any one of claims 1 to 5, wherein the second recognition pattern forming device is arranged at a position where the second recognition pattern can be formed on a mounting surface of an aluminum wheel. Wheel production line.   The said 2nd recognition pattern formation apparatus is arrange | positioned in the position which can form the said 2nd recognition pattern in the casting hole bottom surface in the mounting surface of an aluminum wheel, The Claim 1 thru | or 5 characterized by the above-mentioned. Aluminum wheel production line described in Crab. A first recognition pattern is individually formed on each aluminum wheel after casting, pattern information of the first recognition pattern is individually read from each aluminum wheel after heat treatment, and the first recognition pattern is read based on the pattern information. The second recognition pattern corresponding to the recognition pattern is individually determined for each aluminum wheel, and the second recognition pattern is individually formed on each aluminum wheel after reading the pattern information. An aluminum wheel manufacturing line individual management method, wherein aluminum wheels are individually managed until the heat treatment by the first recognition pattern and after the heat treatment by the second recognition pattern.

Images